Air conditioner and control method and device thereof, storage medium and computer program product

Abstract

The invention discloses an air conditioner and a control method and device thereof, a storage medium and a computer program product. The method comprises the steps that after the air conditioner is started, whether a fresh air ventilator needs to be started or not is determined by combining at least one of indoor air quality parameters of the air conditioner and user instructions of the air conditioner, and the target air gear of the fresh air ventilator is determined; and after the fresh air ventilator is started, the running air gear of the fresh air ventilator is controlled or the running air gear of the fresh air ventilator is controlled and the running frequency of a compressor is controlled in combination with at least one of the current running mode of the air conditioner, the user instruction of the air conditioner, the indoor environment temperature of the air conditioner, the outdoor environment temperature of the air conditioner and the target air gear of the fresh air ventilator. According to the scheme, whether the fresh air ventilator is started or stopped and the target air gear is determined according to the indoor air quality and the user instruction, the operation air gear and the compressor frequency of the fresh air ventilator are adjusted according to the indoor environment temperature, the outdoor environment temperature and the set temperature, indoor temperature fluctuation is reduced, and indoor comfort is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioners, and in particular relates to a control method and device for an air conditioner, an air conditioner, a storage medium and a computer program product. Background Art

[0002] With the development of science and technology and the improvement of people's living standards, people's requirements for air conditioners are not only satisfied with simple cooling and heating, but also have higher demands in terms of health and intelligence. Therefore, fresh air air conditioners, as air conditioners that can perform indoor and outdoor ventilation, have gradually entered the field of vision of users. While meeting indoor comfort, they can also effectively improve indoor air quality and create a healthy and comfortable indoor environment for users.

[0003] When the air conditioner's fresh air function is turned on, fresh air is introduced from outside to improve the indoor air. However, due to the large temperature difference between the indoor and outdoor environments, when the air conditioner blows fresh air from outside into the room, the indoor temperature will change, causing discomfort to the user.

[0004] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The object of the present invention is to provide a control method, device, air conditioner, storage medium and computer program product for an air conditioner, so as to solve the problem that if the indoor and outdoor ambient temperature deviation is large after the fresh air of the air conditioner is turned on, it will cause large indoor temperature fluctuations and affect the user experience. The effect of reducing indoor temperature fluctuations and improving indoor comfort is achieved by determining whether the fresh air fan is turned on and off and the target wind speed according to the indoor air quality and user instructions, adjusting the operating wind speed and compressor frequency of the fresh air fan according to the indoor ambient temperature, outdoor ambient temperature and set temperature.

[0006] The present invention provides a control method for an air conditioner, wherein an outdoor unit of the air conditioner has a compressor, and an indoor unit of the air conditioner has a fresh air fan; the control method for the air conditioner comprises: after the air conditioner is turned on, obtaining an indoor air quality parameter of the air conditioner, obtaining a user instruction of the air conditioner, obtaining an indoor ambient temperature of the air conditioner, and obtaining an outdoor ambient temperature of the air conditioner; determining whether the fresh air fan needs to be turned on and a target wind speed of the fresh air fan in combination with the indoor air quality parameter of the air conditioner and at least one of the user instructions of the air conditioner; after the fresh air fan is turned on, controlling the operating wind speed of the fresh air fan in combination with the current operating mode of the air conditioner, the user instruction of the air conditioner, the indoor ambient temperature of the air conditioner, the outdoor ambient temperature of the air conditioner, and at least one of the target wind speed of the fresh air fan, or controlling the operating wind speed of the fresh air fan and controlling the operating frequency of the compressor.

[0007] In some embodiments, the user instruction of the air conditioner includes at least one of the following: the user of the air conditioner sets a fresh air start instruction, and the user of the air conditioner sets a fresh air gear; in combination with the indoor air quality parameters of the air conditioner and at least one of the user instructions of the air conditioner, determining whether the fresh air fan needs to be turned on, and determining the target wind speed of the fresh air fan, including: determining whether the user instruction of the air conditioner includes the user of the air conditioner setting the fresh air start instruction, and / or determining whether the user instruction of the air conditioner includes the user of the air conditioner setting the fresh air gear; if it is determined that the user instruction of the air conditioner includes the user of the air conditioner setting the fresh air start instruction, determining that the fresh air fan needs to be turned on, and controlling the fresh air fan to turn on; if it is determined that the user instruction of the air conditioner does not include the user instruction of the air conditioner If the user sets a fresh air start instruction, then when the indoor air quality parameter of the air conditioner is lower than the preset air quality parameter, it is determined that the fresh air fan needs to be turned on, and the fresh air fan is controlled to be turned on; when the fresh air fan is turned on, if it is determined that the user instruction of the air conditioner includes the fresh air gear set by the user of the air conditioner, the target gear of the fresh air fan is determined to be the fresh air gear set by the user of the air conditioner; when the fresh air fan is turned on, if it is determined that the user instruction of the air conditioner does not include the fresh air gear set by the user of the air conditioner, then according to the correspondence between the set air quality parameter and the set wind speed, the set wind speed corresponding to the set air quality parameter that is the same as the indoor air quality parameter of the air conditioner in the correspondence is used as the target gear of the fresh air fan corresponding to the indoor air quality parameter of the air conditioner.

[0008] In some embodiments, the user instruction of the air conditioner also includes: a user set temperature of the air conditioner; in combination with the current operating mode of the air conditioner, the user instruction of the air conditioner, the indoor ambient temperature of the air conditioner, the outdoor ambient temperature of the air conditioner, and at least one of the target air speeds of the fresh air fan, controlling the operating air speed of the fresh air fan, or controlling the operating air speed of the fresh air fan and controlling the operating frequency of the compressor, including: recording the indoor ambient temperature of the air conditioner obtained before the fresh air fan is turned on as the first indoor ambient temperature of the air conditioner; determining whether the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to a first preset temperature; if it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the first preset temperature, then controlling the operating air speed of the fresh air fan to be the target air speed of the fresh air fan; if it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, then determining the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user set temperature of the air conditioner whether the value is less than or equal to a second preset temperature; wherein the second preset temperature is less than the first preset temperature; if it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user set temperature of the air conditioner is less than or equal to the second preset temperature, the running wind speed of the fresh air fan is controlled to be the target wind speed of the fresh air fan, and then, in the cooling mode of the air conditioner or in the heating mode of the air conditioner, according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, the running wind speed of the fresh air fan is controlled, or the running wind speed of the fresh air fan is controlled and the running frequency of the compressor is controlled; if it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user set temperature of the air conditioner is less than or equal to the second preset temperature, the running wind speed of the fresh air fan is controlled to run at the preset minimum wind speed of the fresh air fan, and then, in the cooling mode of the air conditioner or in the heating mode of the air conditioner, according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, the running wind speed of the fresh air fan is controlled, or the running wind speed of the fresh air fan is controlled and the running frequency of the compressor is controlled.

[0009] In some embodiments, the operating wind speed of the fresh air fan is controlled to be the target wind speed of the fresh air fan. Afterwards, in the cooling mode of the air conditioner, the operating wind speed of the fresh air fan is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or the operating wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled, including: controlling the operating wind speed of the fresh air fan to be the target wind speed of the fresh air fan, and after a first preset time, recording the indoor ambient temperature of the air conditioner acquired after the fresh air fan is turned on as the second indoor ambient temperature of the air conditioner ; Determine whether the second indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner; if it is determined that the second indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, control the air conditioner to maintain the current operation; if it is determined that the second indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, in the cooling mode of the air conditioner, control the operating frequency of the compressor to increase by a preset frequency, and then control the operating frequency of the compressor according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner;

[0010] And / or, controlling the operating wind speed of the fresh air fan to operate at the preset minimum wind speed of the fresh air fan, and then, in the cooling mode of the air conditioner, controlling the operating wind speed of the fresh air fan according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or controlling the operating wind speed of the fresh air fan and controlling the operating frequency of the compressor, including: controlling the operating wind speed of the fresh air fan to operate at the preset minimum wind speed of the fresh air fan, and after a first preset time, recording the indoor ambient temperature of the air conditioner acquired after the fresh air fan is turned on as the air conditioner a fourth indoor ambient temperature of the air conditioner; determining whether the fourth indoor ambient temperature of the air conditioner is lower than the first indoor ambient temperature of the air conditioner; if it is determined that the fourth indoor ambient temperature of the air conditioner is lower than the first indoor ambient temperature of the air conditioner, controlling the running gear of the fresh air fan to increase the preset gear, and after the first preset time, recording the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as the fifth indoor ambient temperature of the air conditioner; determining whether the fifth indoor ambient temperature of the air conditioner is lower than the fourth indoor ambient temperature of the air conditioner: if so, continuing to control the fresh air fan The running gear of the fresh air fan is increased to a preset gear, and when the running gear of the fresh air fan is increased to the target gear of the fresh air fan, the running gear of the fresh air fan is controlled to maintain the current value; otherwise, the control of the running gear of the fresh air fan to increase the preset gear is stopped, and the running gear of the fresh air fan is controlled to maintain the current value; if it is determined that the fourth indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, the running frequency of the compressor is controlled to increase by a preset frequency, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the The sixth indoor ambient temperature of the air conditioner; determine whether the sixth indoor ambient temperature of the air conditioner is greater than or equal to the fourth indoor ambient temperature of the air conditioner: if so, continue to control the operating frequency of the compressor to increase the preset frequency, until the operating gear of the fresh air fan is increased to the target gear of the fresh air fan, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value; otherwise, stop controlling the operating frequency of the compressor to increase the preset frequency, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value.

[0011] In some embodiments, in the cooling mode of the air conditioner, the operating frequency of the compressor is controlled to increase by a preset frequency, and then, according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, the operating frequency of the compressor is controlled, including: controlling the operating frequency of the compressor to increase by a preset frequency, and after a first preset time, recording the indoor ambient temperature of the air conditioner acquired at this time after the fresh air fan is turned on as the third indoor ambient temperature of the air conditioner; determining whether the third indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner; if it is determined that the third indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, controlling the air conditioner to maintain the current operation; if it is determined that the third indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, returning to continue controlling the operating frequency of the compressor to increase by a preset frequency until the currently acquired indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, and then controlling the operating frequency of the compressor to maintain the current value.

[0012] In some embodiments, the operating wind speed of the fresh air fan is controlled to be the target wind speed of the fresh air fan. Afterwards, in the heating mode of the air conditioner, the operating wind speed of the fresh air fan is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or the operating wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled, including: controlling the operating wind speed of the fresh air fan to be the target wind speed of the fresh air fan, and after a first preset time, recording the indoor ambient temperature of the air conditioner acquired after the fresh air fan is turned on as the second indoor ambient temperature of the air conditioner ; Determine whether the second indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner; if it is determined that the second indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, control the air conditioner to maintain the current operation; if it is determined that the second indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, in the heating mode of the air conditioner, control the operating frequency of the compressor to increase by a preset frequency, and then control the operating frequency of the compressor according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner;

[0013] And / or, controlling the operating wind speed of the fresh air fan to operate at a preset minimum wind speed of the fresh air fan, and then, in the heating mode of the air conditioner, controlling the operating wind speed of the fresh air fan according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or controlling the operating wind speed of the fresh air fan and controlling the operating frequency of the compressor, including: controlling the operating wind speed of the fresh air fan to operate at a preset minimum wind speed of the fresh air fan, and after a first preset time, recording the indoor ambient temperature of the air conditioner acquired after the fresh air fan is turned on as the air conditioner a fourth indoor ambient temperature of the air conditioner; determining whether the fourth indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner; if it is determined that the fourth indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, controlling the operating gear of the fresh air fan to increase the preset gear, and after the first preset time, recording the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as the fifth indoor ambient temperature of the air conditioner; determining whether the fifth indoor ambient temperature of the air conditioner is greater than the fourth indoor ambient temperature of the air conditioner: if so, continuing to control the fresh air fan The running gear is increased to a preset gear, and when the running gear of the fresh air fan is increased to the target gear of the fresh air fan, the running gear of the fresh air fan is controlled to maintain the current value; otherwise, the running gear of the fresh air fan is stopped from being controlled to increase to the preset gear, and the running gear of the fresh air fan is controlled to maintain the current value; if it is determined that the fourth indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, the running frequency of the compressor is controlled to increase by a preset frequency, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the indoor ambient temperature of the air conditioner The sixth indoor ambient temperature of the air conditioner; determine whether the sixth indoor ambient temperature of the air conditioner is less than or equal to the fourth indoor ambient temperature of the air conditioner: if so, continue to control the operating frequency of the compressor to increase by a preset frequency, until the operating gear of the fresh air fan is increased to the target gear of the fresh air fan, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value; otherwise, stop controlling the operating frequency of the compressor to increase by the preset frequency, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value.

[0014] In some embodiments, in the heating mode of the air conditioner, the operating frequency of the compressor is controlled to increase by a preset frequency, and then, according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, the operating frequency of the compressor is controlled, including: controlling the operating frequency of the compressor to increase by a preset frequency, and after a first preset time, recording the indoor ambient temperature of the air conditioner acquired at this time after the fresh air fan is turned on as the third indoor ambient temperature of the air conditioner; determining whether the third indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner; if it is determined that the third indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, controlling the air conditioner to maintain the current operation; if it is determined that the third indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, returning to continue controlling the operating frequency of the compressor to increase by a preset frequency until the currently acquired indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, and then controlling the operating frequency of the compressor to maintain the current value.

[0015] Matching the above method, the present invention provides a control device for an air conditioner on the other hand, wherein the outdoor unit of the air conditioner has a compressor, and the indoor unit of the air conditioner has a fresh air fan; the control device for the air conditioner includes: an acquisition unit, configured to acquire the indoor air quality parameters of the air conditioner, acquire the user instructions of the air conditioner, acquire the indoor ambient temperature of the air conditioner, and acquire the outdoor ambient temperature of the air conditioner after the air conditioner is turned on; a control unit, configured to determine whether the fresh air fan needs to be turned on and determine the target wind speed of the fresh air fan in combination with the indoor air quality parameters of the air conditioner and at least one of the user instructions of the air conditioner; the control unit is also configured to control the operating wind speed of the fresh air fan, or control the operating wind speed of the fresh air fan and control the operating frequency of the compressor in combination with the current operating mode of the air conditioner, the user instructions of the air conditioner, the indoor ambient temperature of the air conditioner, the outdoor ambient temperature of the air conditioner, and at least one of the target wind speed of the fresh air fan after the fresh air fan is turned on.

[0016] In some embodiments, the user instruction of the air conditioner includes at least one of the following: the user of the air conditioner sets a fresh air start instruction, and the user of the air conditioner sets a fresh air gear; the control unit, in combination with the indoor air quality parameters of the air conditioner and at least one of the user instructions of the air conditioner, determines whether it is necessary to turn on the fresh air fan, and determines a target wind speed of the fresh air fan, including: determining whether the user instruction of the air conditioner includes the user-set fresh air start instruction of the air conditioner, and / or determining whether the user instruction of the air conditioner includes the user-set fresh air gear; if it is determined that the user instruction of the air conditioner includes the user-set fresh air start instruction of the air conditioner, determining that the fresh air fan needs to be turned on, and controlling the fresh air fan to turn on; if it is determined that the user instruction of the air conditioner does not include the fresh air start instruction set by the user of the air conditioner, If the user of the air conditioner sets a fresh air start instruction, then when the indoor air quality parameter of the air conditioner is lower than the preset air quality parameter, it is determined that the fresh air fan needs to be turned on, and the fresh air fan is controlled to be turned on; when the fresh air fan is turned on, if it is determined that the user instruction of the air conditioner includes the fresh air gear set by the user of the air conditioner, the target gear of the fresh air fan is determined to be the fresh air gear set by the user of the air conditioner; when the fresh air fan is turned on, if it is determined that the user instruction of the air conditioner does not include the fresh air gear set by the user of the air conditioner, then according to the correspondence between the set air quality parameter and the set wind speed, the set wind speed corresponding to the set air quality parameter that is the same as the indoor air quality parameter of the air conditioner in the correspondence is used as the target gear of the fresh air fan corresponding to the indoor air quality parameter of the air conditioner.

[0017] In some embodiments, the user instruction of the air conditioner further includes: a user set temperature of the air conditioner; the control unit, in combination with the current operating mode of the air conditioner, the user instruction of the air conditioner, the indoor ambient temperature of the air conditioner, the outdoor ambient temperature of the air conditioner, and at least one of the target air speeds of the fresh air fan, controls the operating air speed of the fresh air fan, or controls the operating air speed of the fresh air fan and controls the operating frequency of the compressor, including: recording the indoor ambient temperature of the air conditioner obtained before the fresh air fan is turned on as the first indoor ambient temperature of the air conditioner; determining whether the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to a first preset temperature; if it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the first preset temperature, then controlling the operating air speed of the fresh air fan to be the target air speed of the fresh air fan; if it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, then determining the difference between the first indoor ambient temperature of the air conditioner and the user set temperature of the air conditioner Whether the absolute value of the value is less than or equal to the second preset temperature; wherein the second preset temperature is less than the first preset temperature; if it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, the operating wind speed of the fresh air fan is controlled to be the target wind speed of the fresh air fan, and then, in the cooling mode of the air conditioner or in the heating mode of the air conditioner, according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, the operating wind speed of the fresh air fan is controlled, or the operation of the fresh air fan is controlled wind speed and controls the operating frequency of the compressor; if it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to a second preset temperature, the operating wind speed of the fresh air fan is controlled to operate at the preset minimum wind speed of the fresh air fan, and thereafter, in the cooling mode of the air conditioner or in the heating mode of the air conditioner, according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, the operating wind speed of the fresh air fan is controlled, or the operating wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled.

[0018] In some embodiments, the control unit controls the operating wind speed of the fresh air fan to be the target wind speed of the fresh air fan. Thereafter, in the cooling mode of the air conditioner, the operating wind speed of the fresh air fan is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or the operating wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled, including: controlling the operating wind speed of the fresh air fan to be the target wind speed of the fresh air fan, and after a first preset time, recording the indoor ambient temperature of the air conditioner acquired after the fresh air fan is turned on as the second indoor ambient temperature of the air conditioner ambient temperature; determining whether the second indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner; if it is determined that the second indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, controlling the air conditioner to maintain the current operation; if it is determined that the second indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, in the cooling mode of the air conditioner, controlling the operating frequency of the compressor to increase by a preset frequency, and then controlling the operating frequency of the compressor according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner;

[0019] And / or, the control unit controls the operating wind speed of the fresh air fan to operate at a preset minimum wind speed of the fresh air fan, and then, in the cooling mode of the air conditioner, controls the operating wind speed of the fresh air fan according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or controls the operating wind speed of the fresh air fan and controls the operating frequency of the compressor, including: controlling the operating wind speed of the fresh air fan to operate at the preset minimum wind speed of the fresh air fan, and after a first preset time, recording the indoor ambient temperature of the air conditioner acquired after the fresh air fan is turned on is the fourth indoor ambient temperature of the air conditioner; determines whether the fourth indoor ambient temperature of the air conditioner is lower than the first indoor ambient temperature of the air conditioner; if it is determined that the fourth indoor ambient temperature of the air conditioner is lower than the first indoor ambient temperature of the air conditioner, controls the running gear of the fresh air fan to increase the preset gear, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the fifth indoor ambient temperature of the air conditioner; determines whether the fifth indoor ambient temperature of the air conditioner is lower than the fourth indoor ambient temperature of the air conditioner: if so, continues to control the The running gear of the fresh air fan is increased to a preset gear, and when the running gear of the fresh air fan is increased to the target gear of the fresh air fan, the running gear of the fresh air fan is controlled to maintain the current value; otherwise, the control of the running gear of the fresh air fan to increase the preset gear is stopped, and the running gear of the fresh air fan is controlled to maintain the current value; if it is determined that the fourth indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, the running frequency of the compressor is controlled to increase by a preset frequency, and after the first preset time, the indoor ambient temperature of the air conditioner obtained at this time after the fresh air fan is turned on is recorded as The sixth indoor ambient temperature of the air conditioner; determine that the sixth indoor ambient temperature of the air conditioner is greater than or equal to the fourth indoor ambient temperature of the air conditioner: if so, continue to control the operating frequency of the compressor to increase by a preset frequency, until the operating gear of the fresh air fan is increased to the target gear of the fresh air fan, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value; otherwise, stop controlling the operating frequency of the compressor to increase by the preset frequency, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value.

[0020] In some embodiments, the control unit controls the operating frequency of the compressor to increase by a preset frequency in the cooling mode of the air conditioner, and then controls the operating frequency of the compressor according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, including: controlling the operating frequency of the compressor to increase by a preset frequency, and after a first preset time, recording the indoor ambient temperature of the air conditioner acquired at this time after the fresh air fan is turned on as the third indoor ambient temperature of the air conditioner; determining whether the third indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner; if it is determined that the third indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, controlling the air conditioner to maintain the current operation; if it is determined that the third indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, returning to continue controlling the operating frequency of the compressor to increase by a preset frequency until the currently acquired indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, and then controlling the operating frequency of the compressor to maintain the current value.

[0021] In some embodiments, the control unit controls the operating wind speed of the fresh air fan to be the target wind speed of the fresh air fan. Thereafter, in the heating mode of the air conditioner, the operating wind speed of the fresh air fan is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or the operating wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled, including: controlling the operating wind speed of the fresh air fan to be the target wind speed of the fresh air fan, and after a first preset time, recording the indoor ambient temperature of the air conditioner acquired after the fresh air fan is turned on as the second indoor ambient temperature of the air conditioner ambient temperature; determining whether the second indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner; if it is determined that the second indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, controlling the air conditioner to maintain the current operation; if it is determined that the second indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, in the heating mode of the air conditioner, controlling the operating frequency of the compressor to increase by a preset frequency, and then controlling the operating frequency of the compressor according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner;

[0022] And / or, the control unit controls the operating wind speed of the fresh air fan to operate at a preset minimum wind speed of the fresh air fan, and then, in the heating mode of the air conditioner, controls the operating wind speed of the fresh air fan according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or controls the operating wind speed of the fresh air fan and controls the operating frequency of the compressor, including: controlling the operating wind speed of the fresh air fan to operate at the preset minimum wind speed of the fresh air fan, and after a first preset time, recording the indoor ambient temperature of the air conditioner acquired after the fresh air fan is turned on is the fourth indoor ambient temperature of the air conditioner; determines whether the fourth indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner; if it is determined that the fourth indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, controls the running gear of the fresh air fan to increase the preset gear, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the fifth indoor ambient temperature of the air conditioner; determines whether the fifth indoor ambient temperature of the air conditioner is greater than the fourth indoor ambient temperature of the air conditioner: if so, continues to control the The operating gear of the fresh air fan is increased to a preset gear, and when the operating gear of the fresh air fan is increased to the target gear of the fresh air fan, the operating gear of the fresh air fan is controlled to maintain the current value; otherwise, the control of the operating gear of the fresh air fan to increase the preset gear is stopped, and the operating gear of the fresh air fan is controlled to maintain the current value; if it is determined that the fourth indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, the operating frequency of the compressor is controlled to increase the preset frequency, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the The sixth indoor ambient temperature of the air conditioner; determine whether the sixth indoor ambient temperature of the air conditioner is less than or equal to the fourth indoor ambient temperature of the air conditioner: if so, continue to control the operating frequency of the compressor to increase the preset frequency, until the operating gear of the fresh air fan is increased to the target gear of the fresh air fan, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value; otherwise, stop controlling the operating frequency of the compressor to increase the preset frequency, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value.

[0023] In some embodiments, the control unit controls the operating frequency of the compressor to increase by a preset frequency in the heating mode of the air conditioner, and then controls the operating frequency of the compressor according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, including: controlling the operating frequency of the compressor to increase by a preset frequency, and after a first preset time, recording the indoor ambient temperature of the air conditioner acquired at this time after the fresh air fan is turned on as the third indoor ambient temperature of the air conditioner; determining whether the third indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner; if it is determined that the third indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, controlling the air conditioner to maintain the current operation; if it is determined that the third indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, returning to continue controlling the operating frequency of the compressor to increase by a preset frequency until the currently acquired indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, and then controlling the operating frequency of the compressor to maintain the current value.

[0024] Matching the above device, the present invention provides an air conditioner on another aspect, including: the control device of the air conditioner described above.

[0025] Matching the above method, the present invention provides a storage medium on another aspect, wherein the storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the steps of the air conditioner control method described above.

[0026] Matching the above method, the present invention further provides a computer program product on the other hand, including a computer program, which implements the steps of the above air conditioner control method when executed by a processor.

[0027] Therefore, the scheme of the present invention, with respect to the fresh air function of the air conditioner, when the working mode of the fresh air function is the automatic mode, determines whether to turn on the fresh air fan (such as the fresh air fan 61) and the target wind speed of the fresh air fan according to the indoor air quality; when the working mode of the fresh air function is the on mode, controls the fresh air fan to turn on, and when there is a set wind speed, determines the target wind speed of the fresh air fan to be the set wind speed, and when there is no set wind speed, determines the target wind speed of the fresh air fan according to the indoor air quality; when the fresh air fan is turned on, controls the operating wind speed of the fresh air fan according to the indoor ambient temperature, the outdoor ambient temperature and the set temperature, and selectively controls the operating frequency of the compressor; thereby, by determining whether the fresh air fan is turned on and off and the target wind speed according to the indoor air quality and user instructions, and adjusting the operating wind speed and the compressor frequency of the fresh air fan according to the indoor ambient temperature, the outdoor ambient temperature and the set temperature, the indoor temperature fluctuation is reduced and the indoor comfort is improved.

[0028] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention.

[0029] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a flow chart of an embodiment of a method for controlling an air conditioner of the present invention;

[0031] Figure 2 A flow chart of an embodiment of determining whether the fresh air fan needs to be turned on and a target wind speed of the fresh air fan when it needs to be turned on in the method of the present invention;

[0032] Figure 3 It is a flow chart of an embodiment of controlling the operating wind speed of the fresh air fan and the operating frequency of the compressor in the cooling mode or the heating mode in the method of the present invention;

[0033] Figure 4 It is a flow chart of an embodiment of controlling the operating frequency of the compressor after controlling the fresh air fan to operate at a target gear in the cooling mode of the method of the present invention;

[0034] Figure 5 It is a flow chart of an embodiment of controlling the operating frequency of the compressor after controlling the fresh air fan to operate at the lowest gear in the cooling mode of the method of the present invention;

[0035] Figure 6 It is a flow chart of an embodiment of controlling the operating frequency of the compressor in the refrigeration mode in the method of the present invention;

[0036] Figure 7 It is a flow chart of an embodiment of controlling the operating frequency of the compressor after controlling the fresh air fan to operate at a target gear in the heating mode of the method of the present invention;

[0037] Figure 8 It is a flow chart of an embodiment of controlling the operating frequency of the compressor after controlling the fresh air fan to operate at the lowest gear in the heating mode of the method of the present invention;

[0038] Fig. 9 It is a flow chart of an embodiment of controlling the operating frequency of the compressor in the heating mode in the method of the present invention;

[0039] Fig.10 A schematic structural diagram of an embodiment of a control device for an air conditioner of the present invention;

[0040] Fig.11 is a structural schematic diagram of an air conditioner;

[0041] Fig.12 It is a schematic diagram of the installation structure between the indoor fan and the fresh air fan 61 in the air conditioner;

[0042] Fig.13 This is a schematic diagram of the process of starting the fresh air fan 61 in the cooling mode;

[0043] Fig.14 This is a schematic diagram of the process of starting the fresh air fan 61 in the heating mode.

[0044] In conjunction with the accompanying drawings, the reference numerals in the embodiments of the present invention are as follows:

[0045] 1-indoor unit; 2-four-way valve; 31-outdoor heat exchanger; 32-indoor heat exchanger; 41-outdoor temperature and humidity sensor; 42-indoor temperature and humidity sensor; 43-indoor gas concentration sensor; 5-electronic expansion valve; 61-fresh air fan; 62-indoor air fan; 7-humidifier; 8-air duct; 102-acquisition unit; 104-control unit. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0047] Considering that if the indoor and outdoor ambient temperatures deviate greatly after the air conditioner's fresh air blower is turned on, it will cause large indoor temperature fluctuations and affect the user experience. Therefore, when the air conditioner receives a fresh air blower start-up instruction, it is necessary to reasonably control the fresh air blower start-up process according to the current operation of the air conditioner to avoid the introduction of outdoor heat (or cold) load into the room due to the fresh air blower being turned on, causing large indoor temperature fluctuations and affecting the comfort of the air conditioner.

[0048] Therefore, the solution of the present invention proposes a control method for an air conditioner, which reasonably controls the start-up process of the fresh air fan according to the current operating conditions of the air conditioner, avoids large fluctuations in indoor temperature, and thus improves the comfort of the air conditioner.

[0049] Fig.11 Figure 1 is a schematic diagram of the structure of an air conditioner. Fig.11The air conditioner shown includes two parts: an indoor unit (such as indoor unit 1) and an outdoor unit. The indoor unit includes: an indoor heat exchanger 32, an indoor fan 62, an indoor environment temperature sensing package (such as an indoor temperature and humidity sensor 42), a sensor (such as an indoor gas concentration sensor 43) and a fresh air fan 61; the indoor environment temperature sensing package is used to detect the indoor environment temperature, the sensor is used to detect the indoor air quality (such as detecting the indoor carbon dioxide, formaldehyde and other concentrations), the indoor fan 62 sucks air from the air inlet of the indoor unit, and blows the air conditioner air into the room after passing through the indoor heat exchanger 32; the fresh air fan 61 directly draws fresh air from the outside and transports it to the room. The outdoor unit is composed of a compressor, a four-way valve 2, an outdoor heat exchanger 31, an electronic expansion valve 5, an outdoor fan and an outdoor environment temperature sensing package (such as an outdoor temperature and humidity sensor 41). The outdoor environment temperature sensing package is used to detect the outdoor environment temperature. The exhaust port of the compressor is connected to the first valve port of the four-way valve 2; the second valve port of the four-way valve 2 is connected to the fourth valve port of the four-way valve 2 through the outdoor heat exchanger 31, the electronic expansion valve 5, the fresh air fan 61, the indoor heat exchanger 32, and the indoor air fan 62; the third valve port of the four-way valve 2 is connected to the air intake port of the compressor through the gas-liquid separator. The outdoor temperature and humidity sensor 41 is arranged on the outdoor side and located between the outdoor heat exchanger 31 and the electronic expansion valve 5, and the indoor temperature and humidity sensor 42 is arranged on the indoor side and located between the indoor air fan 62 and the four-way valve 2.

[0050] exist Fig.11 In the example shown, preferably, the indoor unit may further include a humidifier 7. The humidifier 7 is arranged between the fresh air fan 61 and the indoor heat exchanger 32.

[0051] Fig.12 FIG. 6 is a schematic diagram of the installation structure between the indoor fan and the fresh air fan 61 in the air conditioner. Fig.12 As shown, the indoor unit 1 has an air duct 8, and the indoor fan 62 is arranged in the air duct 8 to suck air from the air inlet of the air conditioner to the air outlet of the air conditioner. The air duct of the fresh air fan 61 is arranged at the bottom of the air duct 1, and the fresh air fan 61 is arranged in the air duct of the fresh air fan 61, sucking air from the air inlet of the fresh air fan 61 to the air outlet of the fresh air fan 61.

[0052] According to an embodiment of the present invention, a method for controlling an air conditioner is provided. Figure 1 The flow chart of an embodiment of the method of the present invention is shown. The air conditioner has a fresh air function, the outdoor unit of the air conditioner has a compressor, and the indoor unit of the air conditioner has a fresh air fan (such as Fig.11 and Fig.12 The fresh air blower 61 shown in the figure is used to realize the fresh air function of the air conditioner. Figure 1 As shown, the control method of the air conditioner includes: steps S110 to S130.

[0053] At step S110, after the air conditioner is turned on, preferably after the air conditioner is turned on and running in the current operation mode of the air conditioner, the indoor air quality parameters of the air conditioner are obtained, the user instructions of the air conditioner are obtained, the indoor ambient temperature of the air conditioner is obtained, and the outdoor ambient temperature of the air conditioner is obtained. The user instructions of the air conditioner include at least one of the following: the user setting temperature of the air conditioner, the user setting fresh air start instruction of the air conditioner, and the user setting fresh air gear of the air conditioner; the indoor air quality parameters of the air conditioner such as the concentration of carbon dioxide, formaldehyde, etc. in the air, the indoor ambient temperature of the air conditioner such as the current indoor temperature t0, the current indoor temperature t2, the current indoor temperature t3, the current indoor temperature t4, the current indoor temperature t5, the current indoor temperature t6, and the outdoor ambient temperature of the air conditioner such as the current outdoor temperature t1.

[0054] At step S120, it is determined whether the fresh air fan needs to be turned on in combination with the indoor air quality parameters of the air conditioner and at least one of the user instructions of the air conditioner, and the target wind speed of the fresh air fan is determined; that is, it is determined whether the fresh air fan needs to be turned on in combination with the indoor air quality parameters of the air conditioner and at least one of the user instructions of the air conditioner; and if it is determined that the fresh air fan needs to be turned on, the target wind speed of the fresh air fan is determined in combination with the indoor air quality parameters of the air conditioner and at least one of the user instructions of the air conditioner. Specifically: it is determined whether the fresh air fan needs to be turned on in combination with the indoor air quality parameters of the air conditioner and at least one of the user instructions of the air conditioner; if it is determined that the fresh air fan needs to be turned on, the fresh air fan is controlled to be turned on; and the target wind speed of the fresh air fan is determined in combination with the indoor air quality parameters of the air conditioner and at least one of the user instructions of the air conditioner;

[0055] At step S130, after the fresh air fan is turned on, the operating wind speed of the fresh air fan is controlled in combination with the current operating mode of the air conditioner, the user instruction of the air conditioner, the indoor ambient temperature of the air conditioner, the outdoor ambient temperature of the air conditioner, and at least one of the target wind speeds of the fresh air fan, or the operating wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled. Specifically: after the fresh air fan is turned on, the operating wind speed of the fresh air fan is controlled in combination with the current operating mode of the air conditioner, the user instruction of the air conditioner, the indoor ambient temperature of the air conditioner, the outdoor ambient temperature of the air conditioner, and at least one of the target wind speeds of the fresh air fan; or, after the fresh air fan is turned on, the operating wind speed of the fresh air fan is controlled in combination with the current operating mode of the air conditioner, the user instruction of the air conditioner, the indoor ambient temperature of the air conditioner, the outdoor ambient temperature of the air conditioner, and at least one of the target wind speeds of the fresh air fan, and the operating frequency of the compressor is controlled.

[0056] The solution of the present invention proposes a control scheme for an air conditioner, which reasonably controls the start-up process of the fresh air fan 61 according to the current operating status of the air conditioner, thereby avoiding large fluctuations in indoor temperature, improving the comfort of the air conditioner, and improving the user experience, thereby solving the problem in related schemes that after the air conditioner turns on the fresh air fan 61, the outdoor heat (or cold) load is introduced into the room, causing indoor temperature fluctuations, thereby affecting the user's comfort experience.

[0057] In some implementations, the user instruction of the air conditioner includes at least one of the following: the user of the air conditioner sets a fresh air start instruction, and the user of the air conditioner sets a fresh air gear.

[0058] In step S120, the indoor air quality parameters of the air conditioner and at least one of the user instructions of the air conditioner are combined to determine whether the fresh air fan needs to be turned on and the target wind speed of the fresh air fan is determined. Please refer to the following exemplary description for the specific process.

[0059] Combine the following Figure 2 The flowchart of an embodiment of the method of the present invention for determining whether the fresh air fan needs to be turned on and the target wind speed of the fresh air fan when it needs to be turned on is shown, further illustrating the specific process of determining whether the fresh air fan needs to be turned on and the target wind speed of the fresh air fan when it needs to be turned on in step S120, including: steps S210 to S250.

[0060] Step S210, determining whether the user instruction of the air conditioner includes a fresh air start instruction set by the user of the air conditioner, and / or determining whether the user instruction of the air conditioner includes a fresh air level set by the user of the air conditioner.

[0061] Step S220: If it is determined that the user instruction of the air conditioner includes a fresh air start instruction set by the user of the air conditioner, it is determined that the fresh air fan needs to be turned on, and the fresh air fan is controlled to be turned on.

[0062] Step S230, if it is determined that the user instruction of the air conditioner does not include the fresh air start instruction set by the user of the air conditioner, then when the indoor air quality parameter of the air conditioner is lower than the preset air quality parameter, it is determined that the fresh air fan needs to be turned on, and the fresh air fan is controlled to be turned on.

[0063] Step S240, when the fresh air fan is turned on, if it is determined that the user instruction of the air conditioner includes the user of the air conditioner setting the fresh air level, then the target level of the fresh air fan is determined to be the fresh air level set by the user of the air conditioner.

[0064] Step S250, when the fresh air fan is turned on, if it is determined that the user instruction of the air conditioner does not include the user-set fresh air level of the air conditioner, then according to the correspondence between the set air quality parameter and the set wind speed, the set wind speed corresponding to the set air quality parameter in the correspondence that is the same as the indoor air quality parameter of the air conditioner is used as the target level of the fresh air fan corresponding to the indoor air quality parameter of the air conditioner.

[0065] In the solution of the present invention, Fig.11 and Fig.12 When the air conditioner in the example shown is running, the control method for turning on the fresh air blower 61 of the air conditioner includes:

[0066] Step 1: When it is detected that the current indoor air quality is poor or the user requires to turn on the fresh air fan 61, turn on the fresh air fan 61. If the fresh air fan 61 is turned on, then execute step 2.

[0067] Step 2: Determine the required operating gear of the fresh air fan 61 according to the indoor air quality and user needs, and then execute step 3.

[0068] In step 1 and step 2, when the indoor air quality is detected to be poor or the user requests to turn on the fresh air fan 61, the following control is performed: the current indoor air quality is detected by a sensor (such as the indoor gas concentration sensor 43) to determine the gear position at which the fresh air fan 61 needs to run after being turned on.

[0069] Specifically, the current air quality is judged by detecting the concentration of carbon dioxide, formaldehyde, etc. in the air through the sensor. Taking carbon dioxide as an example, when the indoor carbon dioxide is detected to be in the range of 0ppm to 1000ppm, the current air quality is judged to be excellent; when the indoor carbon dioxide concentration is detected to be in the range of 1000ppm to 2000ppm, the current indoor air quality is judged to be good; when the indoor carbon dioxide concentration is detected to be in the range of 2000ppm to 3000ppm, the current indoor air quality is judged to be medium; when the indoor carbon dioxide concentration is detected to be greater than 3000ppm, the current indoor air quality is judged to be poor. PPM concentration (parts per million) is the concentration expressed as the mass of the solute as a percentage of the mass of the total solution, also known as parts per million concentration. The corresponding relationship between the air quality detected by the sensor and the operating wind speed of the fresh air fan 61 is shown in Table 1.

[0070] Table 1

[0071]

[0072] When the fresh air fan 61 is in automatic mode, whether to turn on the fresh air fan 61 and the operating gear of the fresh air fan 61 are determined according to the detected air quality; the automatic mode means that when the user does not request the fresh air fan 61 to be turned on or off, the fresh air fan 61 will automatically control whether the fresh air fan 61 is turned on or off according to the current indoor air quality, and the wind speed at which the fresh air fan 61 runs after being turned on.

[0073] In the automatic mode of the fresh air fan 61, when the air quality is detected to be excellent, the fresh air fan 61 is in the off state; when the air quality is detected to be not excellent, the fresh air fan 61 is judged to operate at a wind speed according to the current air quality, as shown in Table 1, when the air quality is good, the fresh air fan 61 operates at a medium wind speed, when the air quality is medium, the fresh air fan 61 operates at a high wind speed, and when the air quality is poor, the fresh air fan 61 operates at an ultra-strong speed. Of course, if the user requires a gear of the fresh air fan 61, it will operate according to the gear set by the user. This operation can reduce energy consumption while meeting user needs; for example, when the indoor air quality is excellent, the fresh air fan 61 does not need to be turned on, which reduces the power consumption caused by turning on the fresh air fan 61.

[0074] When the user requires to start the fresh air fan 61 but has not determined the gear of the fresh air fan 61, when the air quality is detected to be excellent, the fresh air fan 61 operates at a low wind speed; when the air quality is detected to be not excellent, the wind speed of the fresh air fan 61 is determined according to the current air quality, as shown in Table 1. According to this operation, energy consumption can be reduced while meeting the user's needs, and it is avoided that the fresh air fan 61 can actually run at a high wind speed or an ultra-high wind speed when the low wind speed can meet the requirements, causing unnecessary waste.

[0075] When the user turns on the fresh air fan 61 and requests a gear of the fresh air fan 61 at the same time, the gear of the fresh air fan 61 will eventually run according to the user's request; this operation is to meet the user's requirements, avoid the fresh air fan 61 running gear not matching the user-set gear, and give priority to ensuring user needs.

[0076] Step 3. After determining the gear position at which the fresh air fan 61 needs to operate, detect the current indoor temperature t0 and the current outdoor temperature t1, and perform the process of turning on the fresh air fan 61: when the air conditioner is in cooling operation, execute step 4 to execute the process of turning on the fresh air fan 61 in cooling mode; when the air conditioner is in heating operation, execute step 5 to execute the process of turning on the fresh air fan 61 in heating mode.

[0077] In the solution of the present invention, the indoor air quality is directly detected by the indoor sensor of the air conditioner (such as the indoor gas concentration sensor 43), which can more accurately determine whether the fresh air fan 61 needs to be turned on, thereby improving indoor comfort; the outdoor air quality is not consistent with the indoor air quality. For example, when someone smokes indoors, the indoor air quality will become very poor, while the outdoor air quality may be very good. In the solution of the present invention, the opening process of the fresh air fan 61 is directly controlled by the indoor temperature change, and the indoor temperature change after the fresh air fan 61 is turned on is adjusted in real time, which is more direct and accurate. At the same time, the opening of the fresh air fan 61 does not affect the operation of the main fan (such as the indoor fan 62) and the external fan (i.e., the outdoor fan).

[0078] In some implementations, the user instructions for the air conditioner further include: a user-set temperature for the air conditioner.

[0079] In step S130, the operating wind speed of the fresh air fan is controlled in combination with the current operating mode of the air conditioner, the user instruction of the air conditioner, the indoor ambient temperature of the air conditioner, the outdoor ambient temperature of the air conditioner, and at least one of the target wind speeds of the fresh air fan, or the operating wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled, including: the process of controlling the operating wind speed of the fresh air fan and the operating frequency of the compressor in cooling mode or heating mode.

[0080] Combine the following Figure 3 The flowchart of an embodiment of the method of the present invention is shown, which controls the operating wind speed of the fresh air fan and the operating frequency of the compressor in the cooling mode or the heating mode, further illustrating the specific process of controlling the operating wind speed of the fresh air fan and the operating frequency of the compressor in the cooling mode or the heating mode in step S130, including: steps S310 to S360.

[0081] Step S310, in the cooling mode of the air conditioner or the heating mode of the air conditioner, the indoor ambient temperature of the air conditioner obtained before the fresh air fan is turned on is recorded as the first indoor ambient temperature of the air conditioner; wherein, the first indoor ambient temperature of the air conditioner is such as the current indoor temperature t0; the second indoor ambient temperature of the air conditioner is such as the current indoor temperature t2.

[0082] Step S320, in the cooling mode or the heating mode of the air conditioner, determine whether the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to a first preset temperature; wherein the first preset temperature is, for example, temperature t 预设值1 .

[0083] Step S330, in the cooling mode of the air conditioner or the heating mode of the air conditioner, if it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the first preset temperature, the operating wind speed of the fresh air fan is controlled to be the target wind speed of the fresh air fan.

[0084] Step S340, in the cooling mode or the heating mode of the air conditioner, if it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, then determine whether the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to a second preset temperature; wherein the second preset temperature is less than the first preset temperature, and the second preset temperature is such as temperature t 预设值2 .

[0085] Step S350, in the cooling mode of the air conditioner or the heating mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, if it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, the operating wind speed of the fresh air fan is controlled to be the target wind speed of the fresh air fan. Thereafter, in the cooling mode of the air conditioner or in the heating mode of the air conditioner, the operating wind speed of the fresh air fan is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or the operating wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled.

[0086] Step S360, in the cooling mode of the air conditioner or the heating mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, if it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, the operating wind speed of the fresh air fan is controlled to operate at the preset minimum wind speed of the fresh air fan. Thereafter, in the cooling mode of the air conditioner or in the heating mode of the air conditioner, the operating wind speed of the fresh air fan is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or the operating wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled.

[0087] In the solution of the present invention, the control method for starting the fresh air blower 61 of the air conditioner further includes: step 4, a process for starting the fresh air blower 61 in the cooling mode, for details, see Fig.13 Example shown. Fig.13 FIG. 6 is a flow chart of starting the fresh air blower 61 in cooling mode. Fig.13 As shown, the process of starting the fresh air fan 61 in the cooling mode includes:

[0088] Step 41: Determine whether the current outdoor temperature t1-current indoor temperature t0≤temperature t 预设值1 Time (t 预设值1 Recommended value: 5°C): If yes, go to step 42; otherwise, go to step 43.

[0089] Step 42: When the current outdoor temperature t1 - the current indoor temperature t0 ≤ temperature t 预设值1 When the fresh air blower 61 is turned on, it runs at the required wind speed. Since the indoor temperature is not much different from the outdoor temperature, there is no need to worry about the fresh air blower 61 turning on affecting the increase or decrease of the indoor temperature. Therefore, the fresh air blower 61 runs at the required wind speed, which speeds up the improvement of indoor air quality and avoids unnecessary energy consumption.

[0090] Step 43: When the current outdoor temperature t1 - the current indoor temperature t0 > temperature t 预设值1 When the current indoor temperature t0 is detected, the temperature set by the user t 设 The difference between the current indoor temperature t0 and the user set temperature t 设 ≤t 预设值2 Time (t 预设值2Recommended value: 3°C): If so, execute step 44 to control the operating wind speed of the fresh air fan according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or control the operating wind speed of the fresh air fan and the operating frequency of the compressor; otherwise, execute step 45 to control the operating wind speed of the fresh air fan according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or control the operating wind speed of the fresh air fan and the operating frequency of the compressor.

[0091] In the solution of the present invention, the control method for starting the fresh air blower 61 of the air conditioner further includes: step 5, a process for starting the fresh air blower 61 in the heating mode, for details, see Fig.14 Example shown. Fig.14 FIG. 6 is a flow chart showing the process of starting the fresh air fan 61 in the heating mode. Fig.14 As shown, the process of starting the fresh air fan 61 in the cooling mode includes:

[0092] Step 51: Determine whether the current indoor temperature t0 - the current outdoor temperature t1 ≤ t 预设值1 Time (t 预设值1 Recommended value: 5°C): If yes, go to step 52; otherwise, go to step 53.

[0093] Step 52: When the current indoor temperature t0-current outdoor temperature t1≤t 预设值1 When the fresh air blower 61 is turned on, it runs at the required wind speed. Since the indoor temperature is not much different from the outdoor temperature, there is no need to worry about the fresh air blower 61 turning on affecting the increase or decrease of the indoor temperature. Therefore, the fresh air blower 61 runs at the required wind speed, which speeds up the improvement of indoor air quality and avoids unnecessary energy consumption.

[0094] Step 53: When the current indoor temperature t0 - the current outdoor temperature t1 > t 预设值1 When the current indoor temperature t0 is detected, the temperature set by the user t 设 Difference, judge whether it meets the user set temperature t 设 -Current indoor temperature t0≤t 预设值2 Time (t 预设值2Recommended value: 3°C): If so, execute step 54 to control the operating wind speed of the fresh air fan to be the target wind speed of the fresh air fan. Thereafter, in the cooling mode of the air conditioner or in the heating mode of the air conditioner, according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, control the operating wind speed of the fresh air fan, or control the operating wind speed of the fresh air fan and control the operating frequency of the compressor. Otherwise, execute step 55 to control the operating wind speed of the fresh air fan to operate at the preset minimum wind speed of the fresh air fan. Thereafter, in the cooling mode of the air conditioner or in the heating mode of the air conditioner, according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, control the operating wind speed of the fresh air fan, or control the operating wind speed of the fresh air fan and control the operating frequency of the compressor.

[0095] In the scheme of the present invention, when it is detected that the indoor air quality is poor or the user requires to turn on the fresh air fan 61, the operating gear of the fresh air fan 61 of the air conditioner is determined according to the current indoor air quality and the user's requirements; at the same time, the initial wind speed after the fresh air fan 61 is turned on is determined according to the indoor and outdoor temperature difference and the user set temperature; then, the compressor operating frequency and the operating wind speed of the fresh air fan 61 are adjusted in time according to the changes in the indoor temperature to ensure that the air conditioner will not cause the indoor temperature to rise (or fall) after the fresh air fan 61 is turned on, thereby causing discomfort to the user.

[0096] In some embodiments, in step S350, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, the operating wind speed of the fresh air fan is controlled to be the target wind speed of the fresh air fan. Thereafter, in the cooling mode of the air conditioner, the operating wind speed of the fresh air fan is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or the specific process of controlling the operating wind speed of the fresh air fan and controlling the operating frequency of the compressor is described in the following exemplary description.

[0097] Combine the following Figure 4 The flowchart of an embodiment of the method of the present invention is a flowchart of controlling the operating frequency of the compressor after controlling the fresh air fan to run at the target gear in the cooling mode, further illustrating the specific process of controlling the operating frequency of the compressor after controlling the fresh air fan to run at the target gear in the cooling mode in step S350, including: steps S410 to S440.

[0098] Step S410, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, the operating wind speed of the fresh air fan is controlled to be the target wind speed of the fresh air fan, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the second indoor ambient temperature of the air conditioner; wherein the first preset time is such as the m1 time; the second indoor ambient temperature of the air conditioner is such as the current indoor temperature t2.

[0099] Step S420, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than a first preset temperature, and when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to a second preset temperature, it is determined whether the second indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner.

[0100] Step S430, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than a first preset temperature, and when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to a second preset temperature, if it is determined that the second indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, the air conditioner is controlled to maintain the current operation.

[0101] Step S440, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, if it is determined that the second indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, then in the cooling mode of the air conditioner, the operating frequency of the compressor is controlled to increase by a preset frequency, and then, the operating frequency of the compressor is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner.

[0102] like Fig.13 As shown, the process of starting the fresh air fan 61 in the cooling mode also includes: step 44, at the current indoor temperature t0-user set temperature t 设 ≤Temperature t 预设值2When the fresh air fan 61 is running at the required wind speed, after running for m1 time (m1 recommended value: 3min), the current indoor temperature t2 and the current indoor temperature t0 are detected, and the following judgment is made:

[0103] a) When the current indoor temperature t2 ≤ the current indoor temperature t0, the air conditioner maintains the current state of operation. When it is detected that the temperature after the fresh air fan 61 is turned on is lower than the temperature before the fresh air fan 61 is turned on, it means that the turning on of the fresh air fan 61 will not affect the reduction of the indoor temperature. Therefore, the fresh air fan 61 can maintain the current wind speed operation, thereby reducing the room temperature and improving the indoor air quality.

[0104] b) When the current indoor temperature t2 is greater than the current indoor temperature t0, the operating frequency of the compressor of the air conditioner is increased by △f (recommended value of △f: 4 Hz). Then, the operating frequency of the compressor is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner.

[0105] In the scheme of the present invention, in the cooling mode of the air conditioner, the operating frequency of the compressor is controlled to increase the preset frequency. Thereafter, the operating frequency of the compressor is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner to ensure that the indoor temperature will not rise after the outdoor heat load is introduced into the room, thereby ensuring the user's cooling comfort.

[0106] In some embodiments, in step S360, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, the operating wind speed of the fresh air fan is controlled to operate at the preset minimum wind speed of the fresh air fan. Thereafter, in the cooling mode of the air conditioner, the operating wind speed of the fresh air fan is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or the specific process of controlling the operating wind speed of the fresh air fan and controlling the operating frequency of the compressor is described in the following exemplary description.

[0107] Combine the following Figure 5 The flowchart of an embodiment of the method of the present invention for controlling the operating frequency of the compressor after controlling the fresh air fan to run at the lowest gear in the cooling mode is shown, further illustrating the specific process of controlling the operating frequency of the compressor after controlling the fresh air fan to run at the lowest gear in the cooling mode in step S360, including: steps S510 to S560.

[0108] Step S510, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, the operating wind speed of the fresh air fan is controlled to operate at the preset minimum wind speed of the fresh air fan, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the fourth indoor ambient temperature of the air conditioner; wherein, the first preset time is such as the m1 time; the fourth indoor ambient temperature of the air conditioner is such as the current indoor temperature t4.

[0109] Step S520, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, it is determined whether the fourth indoor ambient temperature of the air conditioner is lower than the first indoor ambient temperature of the air conditioner.

[0110] Step S530, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, if it is determined that the fourth indoor ambient temperature of the air conditioner is lower than the first indoor ambient temperature of the air conditioner, the operating gear of the fresh air fan is controlled to increase to the preset gear, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the fifth indoor ambient temperature of the air conditioner.

[0111] Step S540, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, and when it is determined that the fourth indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, it is determined whether the fifth indoor ambient temperature of the air conditioner is less than the fourth indoor ambient temperature of the air conditioner: if so, the operation gear of the fresh air fan is continuously controlled to increase by the preset gear until the operation gear of the fresh air fan is increased to the target gear of the fresh air fan, and the operation gear of the fresh air fan is controlled to maintain the current value; otherwise, the operation gear of the fresh air fan is stopped from being controlled to increase by the preset gear, and the operation gear of the fresh air fan is controlled to maintain the current value. Wherein, the preset gear is such as one gear; the fifth indoor ambient temperature of the air conditioner is such as the current indoor temperature t5.

[0112] Step S550, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, if it is determined that the fourth indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, the operating frequency of the compressor is controlled to increase by the preset frequency, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the sixth indoor ambient temperature of the air conditioner.

[0113] Step S560, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, and when it is determined that the fourth indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, it is determined that the sixth indoor ambient temperature of the air conditioner is greater than or equal to the fourth indoor ambient temperature of the air conditioner: if so, then continue to control the operating frequency of the compressor to increase by the preset frequency, until the operating gear of the fresh air fan is increased to the target gear of the fresh air fan, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value; otherwise, stop controlling the operating frequency of the compressor to increase by the preset frequency, and control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value. Wherein, the preset gear is such as one gear; the sixth indoor ambient temperature of the air conditioner is such as the current indoor temperature t6.

[0114] like Fig.13 As shown, the process of starting the fresh air blower 61 in the cooling mode also includes: step 45, at the current indoor temperature t0-user set temperature t 设 >t 预设值2 When the fresh air fan 61 is first operated at a low wind speed, after operating for m1 time, the current indoor temperature t4 is detected, and the current indoor temperature t4 is compared with the current indoor temperature t0:

[0115] a) When the current indoor temperature t4 is lower than the current indoor temperature t0, the wind speed of the fresh air fan 61 is increased by one gear, and the current indoor temperature t5 is detected again after running for m1 time, and the current indoor temperature t5 is compared with the current indoor temperature t4: if the current indoor temperature t5 is still lower than the current indoor temperature t4, the wind speed of the fresh air fan 61 is continued to be increased until the fresh air fan 61 runs to the required running gear; if the current indoor temperature t5 is greater than or equal to the current indoor temperature t4, the wind speed of the fresh air fan 61 is stopped from being increased, so that the wind speed of the fresh air fan 61 is maintained at the current value. This operation is to avoid the fresh air fan 61 directly running to the required running gear after it is turned on, which will introduce a large amount of outdoor hot air, causing the indoor temperature to rise and affect the cooling effect. Therefore, by gradually increasing the running gear of the fresh air fan 61 until it reaches the required running gear, the indoor temperature fluctuation is reduced and the cooling effect is guaranteed.

[0116] b) When the current indoor temperature t4 ≥ the current indoor temperature t0, the compressor operating frequency of the air conditioner is increased by △f, and the current indoor temperature t6 is detected again after running for m1 time, and the current indoor temperature t6 is compared with the current indoor temperature t4: if the current indoor temperature t6 ≥ the current indoor temperature t4, the compressor operating frequency is continuously increased until the fresh air fan 61 runs to the required operating gear, and the indoor temperature can maintain a downward trend close to the user-set temperature; if the current indoor temperature t6 < the current indoor temperature t4, the compressor operating frequency is stopped from being increased, and the compressor operating frequency is maintained at the current value. This operation is also to ensure the effect of reducing the indoor temperature. When the indoor temperature is higher than the temperature before the fresh air fan 61 is turned on after the fresh air fan 61 is turned on, the compressor operating frequency is increased to increase the cooling capacity output, ensuring that the indoor temperature can continue to decrease after the fresh air fan 61 is turned on. Among them, the continued regulation of the fresh air fan 61 after running at the lowest wind gear is controlled according to the process shown in 13. The operating gear of the fresh air fan 61 is continuously adjusted according to the corresponding temperature, and the speed can be increased or maintained.

[0117] In some embodiments, in step S440, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, and when it is determined that the second indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, in the cooling mode of the air conditioner, the operating frequency of the compressor is controlled to increase by a preset frequency, and then, for the specific process of controlling the operating frequency of the compressor according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, see the following exemplary description.

[0118] Combine the following Figure 6 The flowchart of an embodiment of controlling the operating frequency of the compressor in the refrigeration mode in the method of the present invention further illustrates the specific process of controlling the operating frequency of the compressor in the refrigeration mode in step S440, including: steps S610 to S640.

[0119] Step S610, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, and when it is determined that the second indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, the operating frequency of the compressor is controlled to increase by a preset frequency, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the third indoor ambient temperature of the air conditioner; wherein the preset frequency is such as frequency △f. The third indoor ambient temperature of the air conditioner is such as the current indoor temperature t3.

[0120] Step S620, in the cooling mode of the air conditioner, upon determining that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than a first preset temperature, determining that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to a second preset temperature, and determining that the second indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, determine whether the third indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner.

[0121] Step S630, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than a first preset temperature, when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to a second preset temperature, and when it is determined that the second indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, if it is determined that the third indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, the air conditioner is controlled to maintain the current operation.

[0122] Step S640, in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, and when it is determined that the second indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, if it is determined that the third indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, then return to continue controlling the operating frequency of the compressor to increase the preset frequency until the currently acquired indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, and the operating frequency of the compressor is controlled to maintain the current value.

[0123] like Fig.13 As shown, the process of turning on the fresh air fan 61 in the cooling mode also includes: in step 44, b) the current indoor temperature t2> the current indoor temperature t0, the compressor operating frequency of the air conditioner is increased by △f (△f recommended value: 4Hz), and then the current indoor temperature t3 is detected again after running for m1 time: if the current indoor temperature t3≤the current indoor temperature t0, the compressor of the air conditioner maintains the current frequency operation; otherwise, the compressor operating frequency of the air conditioner is continuously increased until it is detected that the current indoor temperature t3 is less than or equal to the current indoor temperature t0, to ensure that the indoor temperature does not rise after the fresh air fan 61 is turned on. This operation is to ensure the cooling and temperature reduction effect of the indoor room, to avoid the indoor temperature rising due to the introduction of hot air from the outside into the room after the fresh air fan 61 is turned on, to enhance the cooling effect of the air conditioner by increasing the compressor operating frequency of the air conditioner, and to ensure that the indoor temperature can be kept low after the fresh air fan 61 is turned on.

[0124] In some embodiments, in step S350, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, the operating wind speed of the fresh air fan is controlled to be the target wind speed of the fresh air fan. Thereafter, in the heating mode of the air conditioner, the operating wind speed of the fresh air fan is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or the specific process of controlling the operating wind speed of the fresh air fan and controlling the operating frequency of the compressor is described in the following exemplary description.

[0125] Combine the following Figure 7The flowchart of an embodiment of the method of the present invention is a flowchart of controlling the operating frequency of the compressor after controlling the fresh air fan to run at the target gear in the heating mode, further illustrating the specific process of controlling the operating frequency of the compressor after controlling the fresh air fan to run at the target gear in the heating mode in step S350, including: steps S710 to S740.

[0126] Step S710, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the difference between the user-set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, the operating wind speed of the fresh air fan is controlled to be the target wind speed of the fresh air fan, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the second indoor ambient temperature of the air conditioner; wherein the first preset time is such as the m1 time; the second indoor ambient temperature of the air conditioner is such as the current indoor temperature t2.

[0127] Step S720, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than a first preset temperature, and when it is determined that the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to a second preset temperature, it is determined whether the second indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner.

[0128] Step S730, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than a first preset temperature, and when it is determined that the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to a second preset temperature, if it is determined that the second indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, the air conditioner is controlled to maintain the current operation.

[0129] Step S740, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the difference between the user-set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, if it is determined that the second indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, then in the heating mode of the air conditioner, the operating frequency of the compressor is controlled to increase by a preset frequency, and then, the operating frequency of the compressor is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner.

[0130] like Fig.14 As shown, the process of starting the fresh air blower 61 in the cooling mode includes: step 54, at the user set temperature t 设 -Current indoor temperature t0≤t 预设值2 When the fresh air fan 61 is running at the required wind speed, after running for m1 time (m1 recommended value: 3min), the current indoor temperature t2 and the current indoor temperature t0 are detected, and the following judgment is made:

[0131] a) When the current indoor temperature t2 ≥ the current indoor temperature t0, the air conditioner maintains the current state of operation. When it is detected that the temperature after the fresh air fan 61 is turned on is lower than the temperature before the fresh air fan 61 is turned on, it means that the turning on of the fresh air fan 61 will not affect the reduction of the indoor temperature. Therefore, the fresh air fan 61 can maintain the current wind speed operation, thereby reducing the room temperature and improving the indoor air quality.

[0132] b) When the current indoor temperature t2 is less than the current indoor temperature t0, the operating frequency of the compressor of the air conditioner is increased by △f (recommended value of △f: 4 Hz), and then the operating frequency of the compressor is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner.

[0133] In the scheme of the present invention, in the heating mode of the air conditioner, the operating frequency of the compressor is controlled to increase the preset frequency. Thereafter, the operating frequency of the compressor is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner to ensure that the indoor temperature will not decrease after the outdoor cooling load is introduced into the room, thereby ensuring the heating comfort of the user.

[0134] In some embodiments, in step S360, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the difference between the user-set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, the operating wind speed of the fresh air fan is controlled to operate at the preset minimum wind speed of the fresh air fan. Thereafter, in the heating mode of the air conditioner, the operating wind speed of the fresh air fan is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner. For the specific process, or the operating wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled, please refer to the following exemplary description.

[0135] Combine the following Figure 8The flowchart of an embodiment of the method of the present invention is a flowchart of controlling the operating frequency of the compressor after controlling the fresh air fan to run at the lowest gear in the heating mode, further illustrating the specific process of controlling the operating frequency of the compressor after controlling the fresh air fan to run at the lowest gear in the heating mode in step S360, including: steps S810 to S860.

[0136] Step S810, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the difference between the user-set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, the operating wind speed of the fresh air fan is controlled to operate at the preset minimum wind speed of the fresh air fan, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the fourth indoor ambient temperature of the air conditioner; wherein the first preset time is such as the m1 time; the fourth indoor ambient temperature of the air conditioner is such as the current indoor temperature t4.

[0137] Step S820, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, it is determined whether the fourth indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner.

[0138] Step S830, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the difference between the user-set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, if it is determined that the fourth indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, the operating gear of the fresh air fan is controlled to increase to the preset gear, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the fifth indoor ambient temperature of the air conditioner.

[0139] Step S840, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, when it is determined that the difference between the user-set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, and when it is determined that the fourth indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, determine whether the fifth indoor ambient temperature of the air conditioner is greater than the fourth indoor ambient temperature of the air conditioner: if so, continue to control the operating gear of the fresh air fan to increase the preset gear until the operating gear of the fresh air fan is increased to the target gear of the fresh air fan, and control the operating gear of the fresh air fan to maintain the current value; otherwise, stop controlling the operating gear of the fresh air fan to increase the preset gear, and control the operating gear of the fresh air fan to maintain the current value; wherein, the preset gear is such as one gear; the fifth indoor ambient temperature of the air conditioner is such as the current indoor temperature t5.

[0140] Step S850, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the difference between the user-set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, if it is determined that the fourth indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, the operating frequency of the compressor is controlled to increase by the preset frequency, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the sixth indoor ambient temperature of the air conditioner.

[0141] Step S860, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, when it is determined that the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, and when it is determined that the fourth indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, it is determined whether the sixth indoor ambient temperature of the air conditioner is less than or equal to the fourth indoor ambient temperature of the air conditioner: if so, then continue to control the operating frequency of the compressor to increase by the preset frequency, until the operating gear of the fresh air fan is increased to the target gear of the fresh air fan, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value; otherwise, stop controlling the operating frequency of the compressor to increase by the preset frequency, and control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value. Wherein, the preset gear is such as one gear; the sixth indoor ambient temperature of the air conditioner is such as the current indoor temperature t6.

[0142] like Fig.14 As shown, the process of starting the fresh air blower 61 in the cooling mode includes: step 55, the user sets the temperature t 设 - Current indoor temperature t0>t 预设值2 When the fresh air fan 61 is first operated at a low wind speed, after operating for m1 time, the current indoor temperature t4 is detected, and the current indoor temperature t4 is compared with the current indoor temperature t0:

[0143] a) If the current indoor temperature t4 is greater than the current indoor temperature t0, the wind speed of the fresh air fan 61 is increased by one gear. After running for m1 time, the current indoor temperature t5 is detected again, and the current indoor temperature t5 is compared with the current indoor temperature t4: if the current indoor temperature t5 is still greater than the current indoor temperature t4, the wind speed of the fresh air fan 61 is continued to be increased until the fresh air fan 61 runs to the required running gear; if the current indoor temperature t5 is less than or equal to the current indoor temperature t4, the wind speed of the fresh air fan 61 is stopped from being increased, so that the wind speed of the fresh air fan 61 is maintained at the current value. This operation is to avoid the fresh air fan 61 directly running to the required running gear after it is turned on, which will introduce a large amount of outdoor hot air, causing the indoor temperature to rise and affect the heating effect. Therefore, by gradually increasing the running gear of the fresh air fan 61 until it reaches the required running gear, the indoor temperature fluctuation is reduced to ensure the heating effect.

[0144] b) When the current indoor temperature t4 ≤ the current indoor temperature t0, the compressor operating frequency of the air conditioner is increased by △f, and the current indoor temperature t6 is detected again after running for m1 time, and the current indoor temperature t6 is compared with the current indoor temperature t4: if the current indoor temperature t6 ≤ the current indoor temperature t4, the compressor operating frequency is continued to be increased until the fresh air fan 61 runs to the required operating gear, and the indoor temperature can maintain an upward trend close to the user-set temperature; if the current indoor temperature t6 > the current indoor temperature t4, the compressor operating frequency is stopped from being increased, and the compressor operating frequency is maintained at the current value. This operation is also to ensure the effect of lowering the indoor temperature. When the fresh air fan 61 is turned on and the indoor temperature is higher than the temperature before the fresh air fan 61 is turned on, the compressor operating frequency is increased to increase the heating output, ensuring that the indoor temperature can continue to decrease after the fresh air fan 61 is turned on.

[0145] In some embodiments, in step S740, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, when it is determined that the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, and when it is determined that the second indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, in the heating mode of the air conditioner, the operating frequency of the compressor is controlled to increase by a preset frequency, and then, for the specific process of controlling the operating frequency of the compressor according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, see the following exemplary description.

[0146] Combine the following Fig. 9 The flowchart of an embodiment of controlling the operating frequency of the compressor in the heating mode in the method of the present invention further illustrates the specific process of controlling the operating frequency of the compressor in the heating mode in step S740, including: steps S910 to S940.

[0147] Step S910, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, when it is determined that the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, and when it is determined that the second indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, the operating frequency of the compressor is controlled to increase by a preset frequency, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the third indoor ambient temperature of the air conditioner; wherein the preset frequency is such as frequency △f. The third indoor ambient temperature of the air conditioner is such as the current indoor temperature t3.

[0148] Step S920, in the heating mode of the air conditioner, upon determining that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than a first preset temperature, determining that the difference between the user-set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to a second preset temperature, and determining that the second indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, determine whether the third indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner.

[0149] Step S930, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than a first preset temperature, when it is determined that the difference between the user-set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to a second preset temperature, and when it is determined that the second indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, if it is determined that the third indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, the air conditioner is controlled to maintain the current operation.

[0150] Step S940, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, it is determined that the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, and it is determined that the second indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, if it is determined that the third indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, then return to continue controlling the operating frequency of the compressor to increase the preset frequency until the currently acquired indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, and the operating frequency of the compressor is controlled to maintain the current value.

[0151] like Fig.14 As shown, the process of turning on the fresh air blower 61 in the cooling mode includes: in step 54, b) when the current indoor temperature t2 is less than the current indoor temperature t0, the compressor operating frequency of the air conditioner is increased by △f (△f recommended value: 4Hz), and the current indoor temperature t3 is detected again after running for m1 time: if the current indoor temperature t3 ≥ the current indoor temperature t0, the air conditioner maintains the current frequency operation; otherwise, the compressor operating frequency of the air conditioner is continuously increased until it is detected that the current indoor temperature is greater than or equal to the current indoor temperature t0, to ensure that the indoor temperature does not decrease after the fresh air blower 61 is turned on. This operation is to ensure the heating and cooling effect of the indoor room, to avoid the indoor temperature rising due to the introduction of hot air from the outside into the room after the fresh air blower 61 is turned on, to enhance the heating effect of the air conditioner by increasing the compressor operating frequency of the air conditioner, and to ensure that the indoor temperature can be kept unchanged after the fresh air blower 61 is turned on.

[0152] By adopting the scheme of the present invention, after the air conditioner turns on the fresh air fan 61, the operating gear of the fresh air fan 61 and the operating frequency of the air conditioner compressor can be adjusted according to the actual operating conditions of the air conditioner, ensuring that after the outdoor heat (or cold) load is introduced into the room, the indoor temperature will not increase (decrease), thereby ensuring the user's cooling and heating comfort.

[0153] By adopting the technical solution of this embodiment, for the fresh air function of the air conditioner, when the working mode of the fresh air function is automatic mode, whether to turn on the fresh air fan (such as fresh air fan 61) and the target wind speed of the fresh air fan are determined according to the indoor air quality; when the working mode of the fresh air function is on mode, the fresh air fan is controlled to be turned on, and when there is a set wind speed, the target wind speed of the fresh air fan is determined to be the set wind speed, and when there is no set wind speed, the target wind speed of the fresh air fan is determined according to the indoor air quality; when the fresh air fan is turned on, the operating wind speed of the fresh air fan is controlled according to the indoor ambient temperature, the outdoor ambient temperature and the set temperature, and the operating frequency of the compressor is selectively controlled; thereby, by determining whether the fresh air fan is turned on and off and the target wind speed according to the indoor air quality and user instructions, and adjusting the operating wind speed and the compressor frequency of the fresh air fan according to the indoor ambient temperature, the outdoor ambient temperature and the set temperature, the indoor temperature fluctuation is reduced and the indoor comfort is improved.

[0154] According to an embodiment of the present invention, a control device for an air conditioner corresponding to the control method for the air conditioner is also provided. Fig.10 The air conditioner has a fresh air function, the outdoor unit of the air conditioner has a compressor, and the indoor unit of the air conditioner has a fresh air blower (such as Fig.11 and Fig.12 The fresh air fan 61 shown in the figure is used to realize the fresh air function of the air conditioner; in the scheme of the present invention, as Fig.10 As shown, the control device of the air conditioner includes: an acquisition unit 102 and a control unit 104.

[0155] Wherein, the acquisition unit 102 is configured to acquire the indoor air quality parameters of the air conditioner, acquire the user instruction of the air conditioner, acquire the indoor environment temperature of the air conditioner, and acquire the outdoor environment temperature of the air conditioner after the air conditioner is turned on, preferably after the air conditioner is turned on and is running in the current operation mode of the air conditioner; wherein the user instruction of the air conditioner includes at least one of the following: the user setting temperature of the air conditioner, the user setting fresh air opening instruction of the air conditioner, and the user setting fresh air gear of the air conditioner; the indoor air quality parameters of the air conditioner such as the concentration of carbon dioxide, formaldehyde, etc. in the air, the indoor environment temperature of the air conditioner such as the current indoor temperature t0, the current indoor temperature t2, the current indoor temperature t3, the current indoor temperature t4, the current indoor temperature t5, and the current indoor temperature t6, and the outdoor environment temperature of the air conditioner such as the current outdoor temperature t1. The details and processing of the acquisition unit 102 refer to step S110.

[0156] The control unit 104 is configured to determine whether the fresh air fan needs to be turned on in combination with the indoor air quality parameter of the air conditioner and at least one of the user instructions of the air conditioner, and determine the target wind speed of the fresh air fan; that is, determine whether the fresh air fan needs to be turned on in combination with the indoor air quality parameter of the air conditioner and at least one of the user instructions of the air conditioner; and if it is determined that the fresh air fan needs to be turned on, determine the target wind speed of the fresh air fan in combination with the indoor air quality parameter of the air conditioner and at least one of the user instructions of the air conditioner; specifically: determine whether the fresh air fan needs to be turned on in combination with the indoor air quality parameter of the air conditioner and at least one of the user instructions of the air conditioner; if it is determined that the fresh air fan needs to be turned on, control the fresh air fan to be turned on; and determine the target wind speed of the fresh air fan in combination with the indoor air quality parameter of the air conditioner and at least one of the user instructions of the air conditioner. The details and processing of the control unit 104 refer to step S120.

[0157] The control unit 104 is also configured to control the running wind speed of the fresh air fan after the fresh air fan is turned on, in combination with at least one of the current running mode of the air conditioner, the user instruction of the air conditioner, the indoor ambient temperature of the air conditioner, the outdoor ambient temperature of the air conditioner, and the target wind speed of the fresh air fan, or control the running wind speed of the fresh air fan and control the running frequency of the compressor. The control unit 104 is specifically configured to: after the fresh air fan is turned on, in combination with at least one of the current running mode of the air conditioner, the user instruction of the air conditioner, the indoor ambient temperature of the air conditioner, the outdoor ambient temperature of the air conditioner, and the target wind speed of the fresh air fan, control the running wind speed of the fresh air fan; or, after the fresh air fan is turned on, in combination with at least one of the current running mode of the air conditioner, the user instruction of the air conditioner, the indoor ambient temperature of the air conditioner, the outdoor ambient temperature of the air conditioner, and the target wind speed of the fresh air fan, control the running wind speed of the fresh air fan and control the running frequency of the compressor. The details and processing of the control unit 104 are also referred to step S130.

[0158] The solution of the present invention proposes a control scheme for an air conditioner, which reasonably controls the start-up process of the fresh air fan 61 according to the current operating status of the air conditioner, thereby avoiding large fluctuations in indoor temperature, improving the comfort of the air conditioner, and improving the user experience, thereby solving the problem in related schemes that after the air conditioner turns on the fresh air fan 61, the outdoor heat (or cold) load is introduced into the room, causing indoor temperature fluctuations, thereby affecting the user's comfort experience.

[0159] In some implementations, the user instruction of the air conditioner includes at least one of the following: the user of the air conditioner sets a fresh air start instruction, and the user of the air conditioner sets a fresh air gear.

[0160] The control unit 104 determines whether to turn on the fresh air fan and determines a target wind speed of the fresh air fan in combination with the indoor air quality parameter of the air conditioner and at least one of the user instructions of the air conditioner, including:

[0161] The control unit 104 is further configured to determine whether the user instruction of the air conditioner includes a fresh air on instruction set by the user of the air conditioner, and / or determine whether the user instruction of the air conditioner includes a fresh air gear set by the user of the air conditioner. The details and processing of the control unit 104 are also shown in step S210.

[0162] The control unit 104 is further configured to determine that the fresh air blower needs to be turned on and control the fresh air blower to turn on if it is determined that the user instruction of the air conditioner includes a fresh air turning on instruction set by the user of the air conditioner. The details and processing of the control unit 104 are also shown in step S220.

[0163] The control unit 104 is further configured to, if it is determined that the user instruction of the air conditioner does not include the user-set fresh air start instruction of the air conditioner, determine that the fresh air blower needs to be turned on when the indoor air quality parameter of the air conditioner is lower than the preset air quality parameter, and control the fresh air blower to be turned on. The details and processing of the control unit 104 are also shown in step S230.

[0164] The control unit 104 is further configured to determine the target gear of the fresh air fan to be the fresh air gear set by the user of the air conditioner when the fresh air fan is turned on, if it is determined that the user instruction of the air conditioner includes the fresh air gear set by the user of the air conditioner. The details and processing of the control unit 104 are also shown in step S240.

[0165] The control unit 104 is further configured to, when the fresh air fan is turned on, if it is determined that the user instruction of the air conditioner does not include the fresh air gear set by the user of the air conditioner, then according to the correspondence between the set air quality parameter and the set wind gear, use the set wind gear corresponding to the set air quality parameter that is the same as the indoor air quality parameter of the air conditioner in the correspondence as the target gear of the fresh air fan corresponding to the indoor air quality parameter of the air conditioner. The details and processing of the control unit 104 are also referred to step S250.

[0166] In the solution of the present invention, Fig.11 and Fig.12 When the air conditioner in the example shown is running, the control method for turning on the fresh air blower 61 of the air conditioner includes:

[0167] Step 1: When it is detected that the current indoor air quality is poor or the user requires to turn on the fresh air fan 61, turn on the fresh air fan 61. If the fresh air fan 61 is turned on, then execute step 2.

[0168] Step 2: Determine the required operating gear of the fresh air fan 61 according to the indoor air quality and user needs, and then execute step 3.

[0169] In step 1 and step 2, when the indoor air quality is detected to be poor or the user requests to turn on the fresh air fan 61, the following control is performed: the current indoor air quality is detected by a sensor (such as the indoor gas concentration sensor 43) to determine the gear position at which the fresh air fan 61 needs to run after being turned on.

[0170] Specifically, the current air quality is judged by detecting the concentration of carbon dioxide, formaldehyde, etc. in the air through the sensor. Taking carbon dioxide as an example, when the indoor carbon dioxide is detected to be in the range of 0ppm to 1000ppm, the current air quality is judged to be excellent; when the indoor carbon dioxide concentration is detected to be in the range of 1000ppm to 2000ppm, the current indoor air quality is judged to be good; when the indoor carbon dioxide concentration is detected to be in the range of 2000ppm to 3000ppm, the current indoor air quality is judged to be medium; when the indoor carbon dioxide concentration is detected to be greater than 3000ppm, the current indoor air quality is judged to be poor. PPM concentration (parts per million) is the concentration expressed as the mass of the solute as a percentage of the mass of the total solution, also known as parts per million concentration. The corresponding relationship between the air quality detected by the sensor and the operating wind speed of the fresh air fan 61 is shown in Table 1.

[0171] When the fresh air fan 61 is in automatic mode, whether to turn on the fresh air fan 61 and the operating gear of the fresh air fan 61 are determined according to the detected air quality; the automatic mode means that when the user does not request the fresh air fan 61 to be turned on or off, the fresh air fan 61 will automatically control whether the fresh air fan 61 is turned on or off according to the current indoor air quality, and the wind speed at which the fresh air fan 61 runs after being turned on.

[0172] In the automatic mode of the fresh air fan 61, when the air quality is detected to be excellent, the fresh air fan 61 is in the off state; when the air quality is detected to be not excellent, the fresh air fan 61 is judged to operate at a wind speed according to the current air quality, as shown in Table 1, when the air quality is good, the fresh air fan 61 operates at a medium wind speed, when the air quality is medium, the fresh air fan 61 operates at a high wind speed, and when the air quality is poor, the fresh air fan 61 operates at an ultra-strong speed. Of course, if the user requires a gear of the fresh air fan 61, it will operate according to the gear set by the user. This operation can reduce energy consumption while meeting user needs; for example, when the indoor air quality is excellent, the fresh air fan 61 does not need to be turned on, which reduces the power consumption caused by turning on the fresh air fan 61.

[0173] When the user requires to start the fresh air fan 61 but has not determined the gear of the fresh air fan 61, when the air quality is detected to be excellent, the fresh air fan 61 operates at a low wind speed; when the air quality is detected to be not excellent, the wind speed of the fresh air fan 61 is determined according to the current air quality, as shown in Table 1. According to this operation, energy consumption can be reduced while meeting the user's needs, and it is avoided that the fresh air fan 61 can actually run at a high wind speed or an ultra-high wind speed when the low wind speed can meet the requirements, causing unnecessary waste.

[0174] When the user turns on the fresh air fan 61 and requests a gear of the fresh air fan 61 at the same time, the gear of the fresh air fan 61 will eventually run according to the user's request; this operation is to meet the user's requirements, avoid the fresh air fan 61 running gear not matching the user-set gear, and give priority to ensuring user needs.

[0175] Step 3. After determining the gear position at which the fresh air fan 61 needs to operate, detect the current indoor temperature t0 and the current outdoor temperature t1, and perform the process of turning on the fresh air fan 61: when the air conditioner is in cooling operation, execute step 4 to execute the process of turning on the fresh air fan 61 in cooling mode; when the air conditioner is in heating operation, execute step 5 to execute the process of turning on the fresh air fan 61 in heating mode.

[0176] In the solution of the present invention, the indoor air quality is directly detected by the indoor sensor of the air conditioner (such as the indoor gas concentration sensor 43), which can more accurately determine whether the fresh air fan 61 needs to be turned on, thereby improving indoor comfort; the outdoor air quality is not consistent with the indoor air quality. For example, when someone smokes indoors, the indoor air quality will become very poor, while the outdoor air quality may be very good. In the solution of the present invention, the opening process of the fresh air fan 61 is directly controlled by the indoor temperature change, and the indoor temperature change after the fresh air fan 61 is turned on is adjusted in real time, which is more direct and accurate. At the same time, the opening of the fresh air fan 61 does not affect the operation of the main fan (such as the indoor fan 62) and the external fan (i.e., the outdoor fan).

[0177] In some implementations, the user instructions for the air conditioner further include: a user-set temperature for the air conditioner.

[0178] The control unit 104 controls the operating wind speed of the fresh air fan, or controls the operating wind speed of the fresh air fan and controls the operating frequency of the compressor in combination with the operating wind speed of the fresh air fan in the cooling mode or the heating mode, in combination with controlling the operating frequency of the compressor, in combination with the operating wind speed of the fresh air fan in the cooling mode or the heating mode, as follows:

[0179] The control unit 104 is further configured to record the indoor ambient temperature of the air conditioner obtained before the fresh air blower is turned on as the first indoor ambient temperature of the air conditioner in the cooling mode or the heating mode of the air conditioner; wherein the first indoor ambient temperature of the air conditioner is such as the current indoor temperature t0; and the second indoor ambient temperature of the air conditioner is such as the current indoor temperature t2. The details and processing of the control unit 104 are also referred to step S310.

[0180] The control unit 104 is further configured to determine whether the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to a first preset temperature in the cooling mode of the air conditioner or the heating mode of the air conditioner; wherein the first preset temperature is a temperature t 预设值1 The details and processing of the control unit 104 can also be found in step S320.

[0181] The control unit 104 is further configured to control the operating wind speed of the fresh air fan to be the target wind speed of the fresh air fan if it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the first preset temperature in the cooling mode of the air conditioner or the heating mode of the air conditioner. The details and processing of the control unit 104 are also shown in step S330.

[0182] The control unit 104 is further configured to determine whether the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to a second preset temperature if it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than a first preset temperature in the cooling mode of the air conditioner or the heating mode of the air conditioner; wherein the second preset temperature is less than the first preset temperature, and the second preset temperature is such as temperature t 预设值2 The details and processing of the control unit 104 can also be found in step S340.

[0183] The control unit 104 is further configured to, in the cooling mode of the air conditioner or the heating mode of the air conditioner, control the running wind speed of the fresh air fan to be the target wind speed of the fresh air fan, and then, in the cooling mode of the air conditioner or in the heating mode of the air conditioner, control the running wind speed of the fresh air fan according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or control the running wind speed of the fresh air fan and control the running frequency of the compressor. The details and processing of the control unit 104 are also shown in step S350.

[0184] The control unit 104 is further configured to, in the cooling mode of the air conditioner or the heating mode of the air conditioner, control the running wind speed of the fresh air fan to run at the preset minimum wind speed of the fresh air fan if the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is determined to be greater than the first preset temperature, and then, in the cooling mode of the air conditioner or in the heating mode of the air conditioner, control the running wind speed of the fresh air fan according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or control the running wind speed of the fresh air fan and control the operating frequency of the compressor. The details and processing of the control unit 104 are also shown in step S360.

[0185] In the solution of the present invention, the control method for starting the fresh air blower 61 of the air conditioner further includes: step 4, a process for starting the fresh air blower 61 in the cooling mode, for details, see Fig.13 Example shown. Fig.13 FIG. 6 is a flow chart of starting the fresh air blower 61 in cooling mode. Fig.13 As shown, the process of starting the fresh air fan 61 in the cooling mode includes:

[0186] Step 41: Determine whether the current outdoor temperature t1-current indoor temperature t0≤temperature t 预设值1 Time (t 预设值1 Recommended value: 5°C): If yes, go to step 42; otherwise, go to step 43.

[0187] Step 42: When the current outdoor temperature t1 - the current indoor temperature t0 ≤ temperature t 预设值1When the fresh air blower 61 is turned on, it runs at the required wind speed. Since the indoor temperature is not much different from the outdoor temperature, there is no need to worry about the fresh air blower 61 turning on affecting the increase or decrease of the indoor temperature. Therefore, the fresh air blower 61 runs at the required wind speed, which speeds up the improvement of indoor air quality and avoids unnecessary energy consumption.

[0188] Step 43: When the current outdoor temperature t1 - the current indoor temperature t0 > temperature t 预设值1 When the current indoor temperature t0 is detected, the temperature set by the user t 设 The difference between the current indoor temperature t0 and the user set temperature t 设 ≤t 预设值2 Time (t 预设值2 Recommended value: 3°C): If so, execute step 44 to control the operating wind speed of the fresh air fan according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or control the operating wind speed of the fresh air fan and the operating frequency of the compressor; otherwise, execute step 45 to control the operating wind speed of the fresh air fan according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or control the operating wind speed of the fresh air fan and the operating frequency of the compressor.

[0189] In the solution of the present invention, the control method for starting the fresh air blower 61 of the air conditioner further includes: step 5, a process for starting the fresh air blower 61 in the heating mode, for details, see Fig.14 Example shown. Fig.14 FIG. 6 is a flow chart showing the process of starting the fresh air fan 61 in the heating mode. Fig.14 As shown, the process of starting the fresh air fan 61 in the cooling mode includes:

[0190] Step 51: Determine whether the current indoor temperature t0 - the current outdoor temperature t1 ≤ t 预设值1 Time (t 预设值1 Recommended value: 5°C): If yes, go to step 52; otherwise, go to step 53.

[0191] Step 52: When the current indoor temperature t0-current outdoor temperature t1≤t 预设值1 When the fresh air blower 61 is turned on, it runs at the required wind speed. Since the indoor temperature is not much different from the outdoor temperature, there is no need to worry about the fresh air blower 61 turning on affecting the increase or decrease of the indoor temperature. Therefore, the fresh air blower 61 runs at the required wind speed, which speeds up the improvement of indoor air quality and avoids unnecessary energy consumption.

[0192] Step 53: When the current indoor temperature t0 - the current outdoor temperature t1 > t 预设值1 When the current indoor temperature t0 is detected, the temperature set by the user t 设Difference, judge whether it meets the user set temperature t 设 -Current indoor temperature t0≤t 预设值2 Time (t 预设值2 Recommended value: 3°C): If so, execute step 54 to control the operating wind speed of the fresh air fan to be the target wind speed of the fresh air fan. Thereafter, in the cooling mode of the air conditioner or in the heating mode of the air conditioner, according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, control the operating wind speed of the fresh air fan, or control the operating wind speed of the fresh air fan and control the operating frequency of the compressor. Otherwise, execute step 55 to control the operating wind speed of the fresh air fan to operate at the preset minimum wind speed of the fresh air fan. Thereafter, in the cooling mode of the air conditioner or in the heating mode of the air conditioner, according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, control the operating wind speed of the fresh air fan, or control the operating wind speed of the fresh air fan and control the operating frequency of the compressor.

[0193] In the scheme of the present invention, when it is detected that the indoor air quality is poor or the user requires to turn on the fresh air fan 61, the operating gear of the fresh air fan 61 of the air conditioner is determined according to the current indoor air quality and the user's requirements; at the same time, the initial wind speed after the fresh air fan 61 is turned on is determined according to the indoor and outdoor temperature difference and the user set temperature; then, the compressor operating frequency and the operating wind speed of the fresh air fan 61 are adjusted in time according to the changes in the indoor temperature to ensure that the air conditioner will not cause the indoor temperature to rise (or fall) after the fresh air fan 61 is turned on, thereby causing discomfort to the user.

[0194] In some embodiments, the control unit 104, in the cooling mode of the air conditioner, controls the running wind speed of the fresh air fan to be the target wind speed of the fresh air fan when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature. Thereafter, in the cooling mode of the air conditioner, the running wind speed of the fresh air fan is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or the running wind speed of the fresh air fan and the operating frequency of the compressor are controlled, including:

[0195] The control unit 104 is also specifically configured to, in the cooling mode of the air conditioner, control the running wind speed of the fresh air fan to be the target wind speed of the fresh air fan, and after the first preset time, record the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as the second indoor ambient temperature of the air conditioner; wherein the first preset time is such as m1 time; the second indoor ambient temperature of the air conditioner is such as the current indoor temperature t2. The details and processing of the control unit 104 are also referred to step S410.

[0196] The control unit 104 is further configured to determine whether the second indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner in the cooling mode of the air conditioner when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature and the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user set temperature of the air conditioner is less than or equal to the second preset temperature. The details and processing of the control unit 104 are also referred to step S420.

[0197] The control unit 104 is further configured to, in the cooling mode of the air conditioner, control the air conditioner to maintain the current operation if it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, and the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature. The details and processing of the control unit 104 are also shown in step S430.

[0198] The control unit 104 is further configured to, in the cooling mode of the air conditioner, control the operating frequency of the compressor to increase by a preset frequency in the cooling mode of the air conditioner, and then control the operating frequency of the compressor according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, and then control the operating frequency of the compressor according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner. The details and processing of the control unit 104 are also shown in step S440.

[0199] like Fig.13 As shown, the process of starting the fresh air fan 61 in the cooling mode also includes: step 44, at the current indoor temperature t0-user set temperature t 设 ≤Temperature t 预设值2 When the fresh air fan 61 is running at the required wind speed, after running for m1 time (m1 recommended value: 3min), the current indoor temperature t2 and the current indoor temperature t0 are detected, and the following judgment is made:

[0200] a) When the current indoor temperature t2 ≤ the current indoor temperature t0, the air conditioner maintains the current state of operation. When it is detected that the temperature after the fresh air fan 61 is turned on is lower than the temperature before the fresh air fan 61 is turned on, it means that the turning on of the fresh air fan 61 will not affect the reduction of the indoor temperature. Therefore, the fresh air fan 61 can maintain the current wind speed operation, thereby reducing the room temperature and improving the indoor air quality.

[0201] b) When the current indoor temperature t2 is greater than the current indoor temperature t0, the operating frequency of the compressor of the air conditioner is increased by △f (recommended value of △f: 4 Hz). Then, the operating frequency of the compressor is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner.

[0202] In the scheme of the present invention, in the cooling mode of the air conditioner, the operating frequency of the compressor is controlled to increase the preset frequency. Thereafter, the operating frequency of the compressor is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner to ensure that the indoor temperature will not rise after the outdoor heat load is introduced into the room, thereby ensuring the user's cooling comfort.

[0203] In some embodiments, the control unit 104, in the cooling mode of the air conditioner, controls the running wind speed of the fresh air fan to operate at the preset minimum wind speed of the fresh air fan when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature. Thereafter, in the cooling mode of the air conditioner, the running wind speed of the fresh air fan is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or the running wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled, including:

[0204] The control unit 104 is also specifically configured to, in the cooling mode of the air conditioner, control the running wind speed of the fresh air fan to run at the preset minimum wind speed of the fresh air fan when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, and after the first preset time, record the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as the fourth indoor ambient temperature of the air conditioner; wherein the first preset time is such as m1 time; the fourth indoor ambient temperature of the air conditioner is such as the current indoor temperature t4. The details and processing of the control unit 104 are also referred to step S510.

[0205] The control unit 104 is further configured to determine whether the fourth indoor ambient temperature of the air conditioner is lower than the first indoor ambient temperature of the air conditioner in the cooling mode of the air conditioner when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature and the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user set temperature of the air conditioner is lower than or equal to the second preset temperature. The details and processing of the control unit 104 are also referred to step S520.

[0206] The control unit 104 is further configured to, in the cooling mode of the air conditioner, control the operation gear of the fresh air fan to increase the preset gear when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, if it is determined that the fourth indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the fifth indoor ambient temperature of the air conditioner. The details and processing of the control unit 104 are also shown in step S530.

[0207] The control unit 104 is further configured to determine whether the fifth indoor ambient temperature of the air conditioner is less than the fourth indoor ambient temperature of the air conditioner when the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, and the fourth indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner in the cooling mode of the air conditioner: if so, continue to control the operation gear of the fresh air fan to increase the preset gear until the operation gear of the fresh air fan is increased to the target gear of the fresh air fan, and control the operation gear of the fresh air fan to maintain the current value; otherwise, stop controlling the operation gear of the fresh air fan to increase the preset gear, and control the operation gear of the fresh air fan to maintain the current value; wherein the preset gear is such as one gear; the fifth indoor ambient temperature of the air conditioner is such as the current indoor temperature t5. The details and processing of the control unit 104 are also referred to step S540.

[0208] The control unit 104 is also specifically configured to, in the cooling mode of the air conditioner, control the operating frequency of the compressor to increase by a preset frequency, and after the first preset time, record the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as the sixth indoor ambient temperature of the air conditioner, if the fourth indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, when the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, and the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature. The control unit 104 is also configured to control the operating frequency of the compressor to increase by a preset frequency, and after the first preset time, record the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as the sixth indoor ambient temperature of the air conditioner, when the fourth indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner ..., when the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, when the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature. The control unit 104 is further configured to control the compressor 104 to increase the operating frequency by a preset frequency, and record the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as the sixth indoor ambient temperature of the air conditioner, when the fourth indoor ambient temperature of the air conditioner is greater than

[0209] The control unit 104 is further configured to determine that the sixth indoor ambient temperature of the air conditioner is greater than or equal to the fourth indoor ambient temperature of the air conditioner when the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, and the fourth indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner in the cooling mode of the air conditioner: if so, then continue to control the operating frequency of the compressor to increase by the preset frequency until the operating gear of the fresh air fan is increased to the target gear of the fresh air fan, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value; otherwise, stop controlling the operating frequency of the compressor to increase by the preset frequency, and control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value. Wherein, the preset gear is such as a gear; the sixth indoor ambient temperature of the air conditioner is such as the current indoor temperature t6. The details and processing of the control unit 104 can also be found in step S560.

[0210] like Fig.13 As shown, the process of starting the fresh air blower 61 in the cooling mode also includes: step 45, at the current indoor temperature t0-user set temperature t 设 >t 预设值2 When the fresh air fan 61 is first operated at a low wind speed, after operating for m1 time, the current indoor temperature t4 is detected, and the current indoor temperature t4 is compared with the current indoor temperature t0:

[0211] a) When the current indoor temperature t4 is lower than the current indoor temperature t0, the wind speed of the fresh air fan 61 is increased by one gear, and the current indoor temperature t5 is detected again after running for m1 time, and the current indoor temperature t5 is compared with the current indoor temperature t4: if the current indoor temperature t5 is still lower than the current indoor temperature t4, the wind speed of the fresh air fan 61 is continued to be increased until the fresh air fan 61 runs to the required running gear; if the current indoor temperature t5 is greater than or equal to the current indoor temperature t4, the wind speed of the fresh air fan 61 is stopped from being increased, so that the wind speed of the fresh air fan 61 is maintained at the current value. This operation is to avoid the fresh air fan 61 directly running to the required running gear after it is turned on, which will introduce a large amount of outdoor hot air, causing the indoor temperature to rise and affect the cooling effect. Therefore, by gradually increasing the running gear of the fresh air fan 61 until it reaches the required running gear, the indoor temperature fluctuation is reduced and the cooling effect is guaranteed.

[0212] b) When the current indoor temperature t4 ≥ the current indoor temperature t0, the compressor operating frequency of the air conditioner is increased by △f, and the current indoor temperature t6 is detected again after running for m1 time, and the current indoor temperature t6 is compared with the current indoor temperature t4: if the current indoor temperature t6 ≥ the current indoor temperature t4, the compressor operating frequency is continued to be increased until the fresh air fan 61 runs to the required operating gear, and the indoor temperature can maintain a downward trend close to the user-set temperature; if the current indoor temperature t6 < the current indoor temperature t4, the compressor operating frequency is stopped from being increased, and the compressor operating frequency is maintained at the current value. This operation is also to ensure the indoor temperature reduction effect. When the fresh air fan 61 is turned on and the indoor temperature is higher than the temperature before the fresh air fan 61 is turned on, the compressor operating frequency is increased to increase the cooling capacity output to ensure that the indoor temperature can continue to decrease after the fresh air fan 61 is turned on.

[0213] In some embodiments, the control unit 104, in the cooling mode of the air conditioner, controls the operating frequency of the compressor to increase by a preset frequency in the cooling mode of the air conditioner, and then controls the operating frequency of the compressor according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, including:

[0214] The control unit 104 is also specifically configured to, in the cooling mode of the air conditioner, control the operating frequency of the compressor to increase by a preset frequency when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, and when it is determined that the second indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, and after the first preset time, record the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as the third indoor ambient temperature of the air conditioner; wherein the preset frequency is such as frequency △f. The third indoor ambient temperature of the air conditioner is such as the current indoor temperature t3. The details and processing of the control unit 104 can also be found in step S610.

[0215] The control unit 104 is further configured to determine whether the third indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner in the cooling mode of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, and when it is determined that the second indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner. The details and processing of the control unit 104 are also referred to step S620.

[0216] The control unit 104 is further configured to, in the cooling mode of the air conditioner, control the air conditioner to maintain the current operation if it is determined that the third indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, and when it is determined that the second indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner. The control unit 104 is also configured to control the air conditioner to maintain the current operation if it is determined that the third indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner. The details and processing of the control unit 104 are also referred to step S630.

[0217] The control unit 104 is further configured to, in the cooling mode of the air conditioner, return to continue controlling the operating frequency of the compressor to increase by a preset frequency, until the currently acquired indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, when it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, when it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, and when it is determined that the second indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, if it is determined that the third indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner. When the compressor operating frequency is maintained at the current value, the control unit 104 is further configured to control the compressor operating frequency to increase by a preset frequency, until the currently acquired indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner. The details and processing of the control unit 104 are also referred to step S640.

[0218] like Fig.13As shown, the process of turning on the fresh air fan 61 in the cooling mode also includes: in step 44, b) the current indoor temperature t2> the current indoor temperature t0, the compressor operating frequency of the air conditioner is increased by △f (△f recommended value: 4Hz), and then the current indoor temperature t3 is detected again after running for m1 time: if the current indoor temperature t3≤the current indoor temperature t0, the compressor of the air conditioner maintains the current frequency operation; otherwise, the compressor operating frequency of the air conditioner is continuously increased until it is detected that the current indoor temperature t3 is less than or equal to the current indoor temperature t0, to ensure that the indoor temperature does not rise after the fresh air fan 61 is turned on. This operation is to ensure the cooling and temperature reduction effect of the indoor room, to avoid the indoor temperature rising due to the introduction of hot air from the outside into the room after the fresh air fan 61 is turned on, to enhance the cooling effect of the air conditioner by increasing the compressor operating frequency of the air conditioner, and to ensure that the indoor temperature can be kept low after the fresh air fan 61 is turned on.

[0219] In some embodiments, the control unit 104, in the heating mode of the air conditioner, controls the running wind speed of the fresh air fan to be the target wind speed of the fresh air fan when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature. Thereafter, in the heating mode of the air conditioner, the running wind speed of the fresh air fan is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or the running wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled, including:

[0220] The control unit 104 is also specifically configured to, in the heating mode of the air conditioner, control the running wind speed of the fresh air fan to be the target wind speed of the fresh air fan when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, and after the first preset time, record the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as the second indoor ambient temperature of the air conditioner; wherein the first preset time is such as m1 time; the second indoor ambient temperature of the air conditioner is such as the current indoor temperature t2. The details and processing of the control unit 104 are also referred to step S710.

[0221] The control unit 104 is further configured to determine, in the heating mode of the air conditioner, whether the second indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature and the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature. The details and processing of the control unit 104 are also referred to step S720.

[0222] The control unit 104 is further configured to, in the heating mode of the air conditioner, control the air conditioner to maintain the current operation if it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, and the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature. The control unit 104 is also configured to control the air conditioner to maintain the current operation if it is determined that the second indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner. The details and processing of the control unit 104 are also referred to step S730.

[0223] The control unit 104 is further configured to, in the heating mode of the air conditioner, control the operating frequency of the compressor to increase by a preset frequency in the case where it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than a first preset temperature, and the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to a second preset temperature, if it is determined that the second indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, and then, in the heating mode of the air conditioner, control the operating frequency of the compressor to increase by a preset frequency, and then, according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, control the operating frequency of the compressor. The details and processing of the control unit 104 are also shown in step S740.

[0224] like Fig.14 As shown, the process of starting the fresh air blower 61 in the cooling mode includes: step 54, at the user set temperature t 设 -Current indoor temperature t0≤t 预设值2 When the fresh air fan 61 is running at the required wind speed, after running for m1 time (m1 recommended value: 3min), the current indoor temperature t2 and the current indoor temperature t0 are detected, and the following judgment is made:

[0225] a) When the current indoor temperature t2 ≥ the current indoor temperature t0, the air conditioner maintains the current state of operation. When it is detected that the temperature after the fresh air fan 61 is turned on is lower than the temperature before the fresh air fan 61 is turned on, it means that the turning on of the fresh air fan 61 will not affect the reduction of the indoor temperature. Therefore, the fresh air fan 61 can maintain the current wind speed operation, thereby reducing the room temperature and improving the indoor air quality.

[0226] b) When the current indoor temperature t2 is less than the current indoor temperature t0, the operating frequency of the compressor of the air conditioner is increased by △f (recommended value of △f: 4 Hz), and then the operating frequency of the compressor is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner.

[0227] In the scheme of the present invention, in the heating mode of the air conditioner, the operating frequency of the compressor is controlled to increase the preset frequency. Thereafter, the operating frequency of the compressor is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner to ensure that the indoor temperature will not decrease after the outdoor cooling load is introduced into the room, thereby ensuring the heating comfort of the user.

[0228] In some embodiments, the control unit 104, in the heating mode of the air conditioner, controls the running wind speed of the fresh air fan to operate at the preset minimum wind speed of the fresh air fan when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature. Thereafter, in the heating mode of the air conditioner, the running wind speed of the fresh air fan is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or the running wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled, including:

[0229] The control unit 104 is also specifically configured to, in the heating mode of the air conditioner, control the running wind speed of the fresh air fan to run at the preset minimum wind speed of the fresh air fan when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, and after the first preset time, record the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as the fourth indoor ambient temperature of the air conditioner; wherein the first preset time is such as m1 time; the fourth indoor ambient temperature of the air conditioner is such as the current indoor temperature t4. The details and processing of the control unit 104 are also referred to step S810.

[0230] The control unit 104 is further configured to determine, in the heating mode of the air conditioner, whether the fourth indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature and the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature. The details and processing of the control unit 104 are also referred to step S820.

[0231] The control unit 104 is further configured to, in the heating mode of the air conditioner, control the operation gear of the fresh air fan to increase the preset gear when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, if it is determined that the fourth indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the fifth indoor ambient temperature of the air conditioner. The details and processing of the control unit 104 are also shown in step S830.

[0232] The control unit 104 is further configured to determine whether the fifth indoor ambient temperature of the air conditioner is greater than the fourth indoor ambient temperature of the air conditioner when the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, and the fourth indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner in the heating mode of the air conditioner: if so, continue to control the operation gear of the fresh air fan to increase the preset gear until the operation gear of the fresh air fan is increased to the target gear of the fresh air fan, and control the operation gear of the fresh air fan to maintain the current value; otherwise, stop controlling the operation gear of the fresh air fan to increase the preset gear, and control the operation gear of the fresh air fan to maintain the current value; wherein the preset gear is such as one gear; the fifth indoor ambient temperature of the air conditioner is such as the current indoor temperature t5. The details and processing of the control unit 104 are also referred to step S840.

[0233] The control unit 104 is also specifically configured to, in the heating mode of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, and when it is determined that the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, if it is determined that the fourth indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, control the operating frequency of the compressor to increase by a preset frequency, and after the first preset time, record the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as the sixth indoor ambient temperature of the air conditioner. The details and processing of the control unit 104 are also shown in step S850.

[0234] The control unit 104 is also specifically configured to, in the heating mode of the air conditioner, determine whether the sixth indoor ambient temperature of the air conditioner is less than or equal to the fourth indoor ambient temperature of the air conditioner when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, and the fourth indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner: if so, continue to control the operating frequency of the compressor to increase by the preset frequency until the operating gear of the fresh air fan is increased to the target gear of the fresh air fan, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value; otherwise, stop controlling the operating frequency of the compressor to increase by the preset frequency, and control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value. Wherein, the preset gear is such as a gear; the sixth indoor ambient temperature of the air conditioner is such as the current indoor temperature t6. The specific and processing of the control unit 104 also refer to step S860.

[0235] like Fig.14 As shown, the process of starting the fresh air blower 61 in the cooling mode includes: step 55, the user sets the temperature t 设 - Current indoor temperature t0>t 预设值2 When the fresh air fan 61 is first operated at a low wind speed, after operating for m1 time, the current indoor temperature t4 is detected, and the current indoor temperature t4 is compared with the current indoor temperature t0:

[0236] a) If the current indoor temperature t4 is greater than the current indoor temperature t0, the wind speed of the fresh air fan 61 is increased by one gear. After running for m1 time, the current indoor temperature t5 is detected again, and the current indoor temperature t5 is compared with the current indoor temperature t4: if the current indoor temperature t5 is still greater than the current indoor temperature t4, the wind speed of the fresh air fan 61 is continued to be increased until the fresh air fan 61 runs to the required running gear; if the current indoor temperature t5 is less than or equal to the current indoor temperature t4, the wind speed of the fresh air fan 61 is stopped from being increased, so that the wind speed of the fresh air fan 61 is maintained at the current value. This operation is to avoid the fresh air fan 61 directly running to the required running gear after it is turned on, which will introduce a large amount of outdoor hot air, causing the indoor temperature to rise and affect the heating effect. Therefore, by gradually increasing the running gear of the fresh air fan 61 until it reaches the required running gear, the indoor temperature fluctuation is reduced to ensure the heating effect.

[0237] b) When the current indoor temperature t4 ≤ the current indoor temperature t0, the compressor operating frequency of the air conditioner is increased by △f, and the current indoor temperature t6 is detected again after running for m1 time, and the current indoor temperature t6 is compared with the current indoor temperature t4: if the current indoor temperature t6 ≤ the current indoor temperature t4, the compressor operating frequency is continued to be increased until the fresh air fan 61 runs to the required operating gear, and the indoor temperature can maintain an upward trend close to the user-set temperature; if the current indoor temperature t6 > the current indoor temperature t4, the compressor operating frequency is stopped from being increased, and the compressor operating frequency is maintained at the current value. This operation is also to ensure the effect of lowering the indoor temperature. When the fresh air fan 61 is turned on and the indoor temperature is higher than the temperature before the fresh air fan 61 is turned on, the compressor operating frequency is increased to increase the heating output, ensuring that the indoor temperature can continue to decrease after the fresh air fan 61 is turned on.

[0238] In some embodiments, the control unit 104, in the heating mode of the air conditioner, controls the operating frequency of the compressor to increase by a preset frequency in the heating mode of the air conditioner, and then controls the operating frequency of the compressor according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, including:

[0239] The control unit 104 is also specifically configured to, in the heating mode of the air conditioner, control the operating frequency of the compressor to increase by a preset frequency when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, when it is determined that the difference between the user-set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, and when it is determined that the second indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, and after the first preset time, record the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as the third indoor ambient temperature of the air conditioner; wherein the preset frequency is such as frequency △f. The third indoor ambient temperature of the air conditioner is such as the current indoor temperature t3. The details and processing of the control unit 104 are also referred to step S910.

[0240] The control unit 104 is further configured to determine, in the heating mode of the air conditioner, whether the third indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, and the second indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner. The details and processing of the control unit 104 are also referred to step S920.

[0241] The control unit 104 is further configured to, in the heating mode of the air conditioner, control the air conditioner to maintain the current operation if it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, and the second indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner. The control unit 104 is also configured to control the air conditioner to maintain the current operation if it is determined that the third indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner. The details and processing of the control unit 104 are also referred to step S930.

[0242] The control unit 104 is further configured to, in the heating mode of the air conditioner, return to continue controlling the operating frequency of the compressor to increase by a preset frequency, until the currently acquired indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, when it is determined that the difference between the first indoor ambient temperature of the air conditioner and the outdoor ambient temperature of the air conditioner is greater than the first preset temperature, when it is determined that the difference between the user set temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the second preset temperature, and when it is determined that the second indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner, if it is determined that the third indoor ambient temperature of the air conditioner is less than the first indoor ambient temperature of the air conditioner. When the compressor operating frequency is maintained at the current value, the control unit 104 is further configured to control the compressor operating frequency to increase by a preset frequency, until the currently acquired indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner. The details and processing of the control unit 104 are also referred to step S940.

[0243] like Fig.14 As shown, the process of turning on the fresh air blower 61 in the cooling mode includes: in step 54, b) when the current indoor temperature t2 is less than the current indoor temperature t0, the compressor operating frequency of the air conditioner is increased by △f (△f recommended value: 4Hz), and the current indoor temperature t3 is detected again after running for m1 time: if the current indoor temperature t3 ≥ the current indoor temperature t0, the air conditioner maintains the current frequency operation; otherwise, the compressor operating frequency of the air conditioner is continuously increased until it is detected that the current indoor temperature is greater than or equal to the current indoor temperature t0, to ensure that the indoor temperature does not decrease after the fresh air blower 61 is turned on. This operation is to ensure the heating and cooling effect of the indoor room, to avoid the indoor temperature rising due to the introduction of hot air from the outside into the room after the fresh air blower 61 is turned on, to enhance the heating effect of the air conditioner by increasing the compressor operating frequency of the air conditioner, and to ensure that the indoor temperature can be kept unchanged after the fresh air blower 61 is turned on.

[0244] By adopting the scheme of the present invention, after the air conditioner turns on the fresh air fan 61, the operating gear of the fresh air fan 61 and the operating frequency of the air conditioner compressor can be adjusted according to the actual operating conditions of the air conditioner, ensuring that after the outdoor heat (or cold) load is introduced into the room, the indoor temperature will not increase (decrease), thereby ensuring the user's cooling and heating comfort.

[0245] Since the processing implemented by the device of this embodiment basically corresponds to the embodiments, principles and examples of the aforementioned method, for the details not fully described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments, and no further elaboration will be made here.

[0246] According to an embodiment of the present invention, an air conditioner corresponding to the control device of the air conditioner is also provided. The air conditioner may include: the control device of the air conditioner described above.

[0247] Since the processing implemented by the air conditioner of this embodiment basically corresponds to the embodiments, principles and examples of the aforementioned devices, for the details not fully described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments, and no further elaboration will be made here.

[0248] According to an embodiment of the present invention, a computer program product corresponding to the air conditioner control method is also provided, including a computer program, which implements the steps of the air conditioner control method described above when executed by a processor.

[0249] Since the processing implemented by the product of this embodiment basically corresponds to the embodiments, principles and examples of the aforementioned method, for the details not fully described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments, and no further elaboration will be made here.

[0250] According to an embodiment of the present invention, a storage medium corresponding to the air conditioner control method is also provided, the storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the steps of the air conditioner control method described above.

[0251] Since the processing implemented by the storage medium of this embodiment basically corresponds to the embodiments, principles and examples of the aforementioned method, for the details not fully described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments, and no further elaboration will be made here.

[0252] In summary, it is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0253] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A method for controlling an air conditioner, characterized in that: The outdoor unit of the air conditioner has a compressor, and the indoor unit of the air conditioner has a fresh air blower; the control method of the air conditioner includes: After the air conditioner is turned on, obtaining indoor air quality parameters of the air conditioner, obtaining user instructions of the air conditioner, obtaining indoor ambient temperature of the air conditioner, and obtaining outdoor ambient temperature of the air conditioner; Determine whether to turn on the fresh air fan and determine the target wind speed of the fresh air fan in combination with the indoor air quality parameter of the air conditioner and at least one of the user instructions of the air conditioner; After the fresh air fan is turned on, the operating wind speed of the fresh air fan is controlled in combination with the current operating mode of the air conditioner, the user instructions of the air conditioner, the indoor ambient temperature of the air conditioner, the outdoor ambient temperature of the air conditioner, and at least one of the target wind speeds of the fresh air fan, or the operating wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled.

2. The air conditioner control method according to claim 1, characterized in that: The user instruction of the air conditioner includes at least one of the following: the user of the air conditioner sets a fresh air start instruction, the user of the air conditioner sets a fresh air gear; Determining whether to turn on the fresh air fan and determining a target wind speed of the fresh air fan in combination with an indoor air quality parameter of the air conditioner and at least one of a user instruction of the air conditioner includes: Determining whether the user instruction of the air conditioner includes a fresh air start instruction set by the user of the air conditioner, and / or determining whether the user instruction of the air conditioner includes a fresh air gear set by the user of the air conditioner; If it is determined that the user instruction of the air conditioner includes a fresh air start instruction set by the user of the air conditioner, it is determined that the fresh air fan needs to be turned on, and the fresh air fan is controlled to be turned on; If it is determined that the user instruction of the air conditioner does not include the fresh air start instruction set by the user of the air conditioner, then when the indoor air quality parameter of the air conditioner is lower than the preset air quality parameter, it is determined that the fresh air fan needs to be turned on, and the fresh air fan is controlled to be turned on; When the fresh air fan is turned on, if it is determined that the user instruction of the air conditioner includes the user of the air conditioner setting the fresh air gear, then the target gear of the fresh air fan is determined to be the fresh air gear set by the user of the air conditioner; When the fresh air fan is turned on, if it is determined that the user instruction of the air conditioner does not include the fresh air level set by the user of the air conditioner, then according to the correspondence between the set air quality parameter and the set wind speed, the set wind speed corresponding to the set air quality parameter in the correspondence that is the same as the indoor air quality parameter of the air conditioner is used as the target level of the fresh air fan corresponding to the indoor air quality parameter of the air conditioner.

3. The air conditioner control method according to claim 1 or 2, characterized in that: The user instructions of the air conditioner also include: a user-set temperature of the air conditioner; In combination with a current operation mode of the air conditioner, a user instruction of the air conditioner, an indoor ambient temperature of the air conditioner, an outdoor ambient temperature of the air conditioner, and at least one of a target air speed of the fresh air fan, the operation air speed of the fresh air fan is controlled, or the operation air speed of the fresh air fan and the operation frequency of the compressor are controlled, including: The indoor ambient temperature of the air conditioner obtained before the fresh air fan is turned on is recorded as the first indoor ambient temperature of the air conditioner; Determining whether an absolute value of a difference between an outdoor ambient temperature of the air conditioner and a first indoor ambient temperature of the air conditioner is less than or equal to a first preset temperature; If it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is less than or equal to the first preset temperature, the operating wind speed of the fresh air fan is controlled to be the target wind speed of the fresh air fan; If it is determined that the absolute value of the difference between the outdoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner is greater than the first preset temperature, then determining whether the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to a second preset temperature; wherein the second preset temperature is less than the first preset temperature; If it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, the operating wind speed of the fresh air fan is controlled to be the target wind speed of the fresh air fan, and then, in the cooling mode of the air conditioner or in the heating mode of the air conditioner, according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, the operating wind speed of the fresh air fan is controlled, or the operating wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled; If it is determined that the absolute value of the difference between the first indoor ambient temperature of the air conditioner and the user-set temperature of the air conditioner is less than or equal to the second preset temperature, the operating wind speed of the fresh air fan is controlled to operate at the preset minimum wind speed of the fresh air fan. Thereafter, in the cooling mode of the air conditioner or in the heating mode of the air conditioner, the operating wind speed of the fresh air fan is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or the operating wind speed of the fresh air fan is controlled and the operating frequency of the compressor is controlled.

4. The control method of the air conditioner according to claim 3, characterized in that: in, Controlling the operating wind speed of the fresh air fan to be the target wind speed of the fresh air fan, and then, in the cooling mode of the air conditioner, controlling the operating wind speed of the fresh air fan according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or controlling the operating wind speed of the fresh air fan and controlling the operating frequency of the compressor, including: Controlling the operating wind speed of the fresh air fan to be the target wind speed of the fresh air fan, and after a first preset time, recording the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as the second indoor ambient temperature of the air conditioner; determining whether a second indoor ambient temperature of the air conditioner is less than or equal to a first indoor ambient temperature of the air conditioner; If it is determined that the second indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, controlling the air conditioner to maintain current operation; If it is determined that the second indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, in the cooling mode of the air conditioner, the operating frequency of the compressor is controlled to increase by a preset frequency, and then the operating frequency of the compressor is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner; and / or, Controlling the running wind speed of the fresh air fan to run at the preset minimum wind speed of the fresh air fan, and then, in the cooling mode of the air conditioner, controlling the running wind speed of the fresh air fan according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or controlling the running wind speed of the fresh air fan and controlling the operating frequency of the compressor, including: Controlling the fresh air fan to operate at a preset minimum wind speed of the fresh air fan, and after a first preset time, recording the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as a fourth indoor ambient temperature of the air conditioner; determining whether a fourth indoor ambient temperature of the air conditioner is less than a first indoor ambient temperature of the air conditioner; If it is determined that the fourth indoor ambient temperature of the air conditioner is lower than the first indoor ambient temperature of the air conditioner, the operation gear of the fresh air fan is controlled to increase to a preset gear, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the fifth indoor ambient temperature of the air conditioner; Determine whether the fifth indoor ambient temperature of the air conditioner is less than the fourth indoor ambient temperature of the air conditioner: if so, continue to control the operation gear of the fresh air fan to increase the preset gear, until the operation gear of the fresh air fan is increased to the target gear of the fresh air fan, and control the operation gear of the fresh air fan to maintain the current value; otherwise, stop controlling the operation gear of the fresh air fan to increase the preset gear, and control the operation gear of the fresh air fan to maintain the current value; If it is determined that the fourth indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, the operating frequency of the compressor is controlled to increase by a preset frequency, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the sixth indoor ambient temperature of the air conditioner; Determine whether the sixth indoor ambient temperature of the air conditioner is greater than or equal to the fourth indoor ambient temperature of the air conditioner: if so, continue to control the operating frequency of the compressor to increase by a preset frequency, until the operating gear of the fresh air fan is increased to the target gear of the fresh air fan, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value; otherwise, stop controlling the operating frequency of the compressor to increase by the preset frequency, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value.

5. The air conditioner control method according to claim 4, characterized in that: In the cooling mode of the air conditioner, the operating frequency of the compressor is controlled to increase by a preset frequency, and then, according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, the operating frequency of the compressor is controlled, including: Controlling the operating frequency of the compressor to increase by a preset frequency, after a first preset time, recording the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as a third indoor ambient temperature of the air conditioner; determining whether a third indoor ambient temperature of the air conditioner is less than or equal to a first indoor ambient temperature of the air conditioner; If it is determined that the third indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, controlling the air conditioner to maintain current operation; If it is determined that the third indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, return to continue controlling the operating frequency of the compressor to increase the preset frequency until the currently acquired indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, and control the operating frequency of the compressor to maintain the current value.

6. The air conditioner control method according to claim 3, characterized in that: in, Controlling the operating wind speed of the fresh air fan to be the target wind speed of the fresh air fan, and then, in the heating mode of the air conditioner, controlling the operating wind speed of the fresh air fan according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or controlling the operating wind speed of the fresh air fan and controlling the operating frequency of the compressor, including: Controlling the operating wind speed of the fresh air fan to be the target wind speed of the fresh air fan, and after a first preset time, recording the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as the second indoor ambient temperature of the air conditioner; determining whether a second indoor ambient temperature of the air conditioner is greater than or equal to a first indoor ambient temperature of the air conditioner; If it is determined that the second indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, controlling the air conditioner to maintain current operation; If it is determined that the second indoor ambient temperature of the air conditioner is lower than the first indoor ambient temperature of the air conditioner, in the heating mode of the air conditioner, the operating frequency of the compressor is controlled to increase by a preset frequency, and then the operating frequency of the compressor is controlled according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner; and / or, Controlling the running wind speed of the fresh air fan to run at the preset minimum wind speed of the fresh air fan, and then, in the heating mode of the air conditioner, controlling the running wind speed of the fresh air fan according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, or controlling the running wind speed of the fresh air fan and controlling the operating frequency of the compressor, including: Controlling the fresh air fan to operate at a preset minimum wind speed of the fresh air fan, and after a first preset time, recording the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as a fourth indoor ambient temperature of the air conditioner; determining whether a fourth indoor ambient temperature of the air conditioner is greater than a first indoor ambient temperature of the air conditioner; If it is determined that the fourth indoor ambient temperature of the air conditioner is greater than the first indoor ambient temperature of the air conditioner, the operating gear of the fresh air fan is controlled to increase to a preset gear, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the fifth indoor ambient temperature of the air conditioner; Determine whether the fifth indoor ambient temperature of the air conditioner is greater than the fourth indoor ambient temperature of the air conditioner: if so, continue to control the operation gear of the fresh air fan to increase the preset gear, until the operation gear of the fresh air fan is increased to the target gear of the fresh air fan, and control the operation gear of the fresh air fan to maintain the current value; otherwise, stop controlling the operation gear of the fresh air fan to increase the preset gear, and control the operation gear of the fresh air fan to maintain the current value; If it is determined that the fourth indoor ambient temperature of the air conditioner is less than or equal to the first indoor ambient temperature of the air conditioner, the operating frequency of the compressor is controlled to increase by a preset frequency, and after the first preset time, the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on is recorded as the sixth indoor ambient temperature of the air conditioner; Determine whether the sixth indoor ambient temperature of the air conditioner is less than or equal to the fourth indoor ambient temperature of the air conditioner: if so, continue to control the operating frequency of the compressor to increase the preset frequency, until the operating gear of the fresh air fan is increased to the target gear of the fresh air fan, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value; otherwise, stop controlling the operating frequency of the compressor to increase the preset frequency, control the operating frequency of the compressor to maintain the current value, and control the operating gear of the fresh air fan to maintain the current value.

7. The air conditioner control method according to claim 6, characterized in that: In the heating mode of the air conditioner, the operating frequency of the compressor is controlled to increase by a preset frequency, and then, according to the currently acquired indoor ambient temperature of the air conditioner and the first indoor ambient temperature of the air conditioner, the operating frequency of the compressor is controlled, including: Controlling the operating frequency of the compressor to increase by a preset frequency, after a first preset time, recording the indoor ambient temperature of the air conditioner obtained after the fresh air fan is turned on as a third indoor ambient temperature of the air conditioner; determining whether a third indoor ambient temperature of the air conditioner is greater than or equal to a first indoor ambient temperature of the air conditioner; If it is determined that the third indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, controlling the air conditioner to maintain current operation; If it is determined that the third indoor ambient temperature of the air conditioner is lower than the first indoor ambient temperature of the air conditioner, the control returns to continue controlling the operating frequency of the compressor to increase the preset frequency until the currently acquired indoor ambient temperature of the air conditioner is greater than or equal to the first indoor ambient temperature of the air conditioner, and the operating frequency of the compressor is controlled to maintain the current value.

8. A control device for an air conditioner, characterized in that: The outdoor unit of the air conditioner has a compressor, and the indoor unit of the air conditioner has a fresh air fan; The control device of the air conditioner comprises: an acquisition unit configured to acquire, after the air conditioner is turned on, an indoor air quality parameter of the air conditioner, acquire a user instruction of the air conditioner, acquire an indoor ambient temperature of the air conditioner, and acquire an outdoor ambient temperature of the air conditioner; A control unit configured to determine whether the fresh air fan needs to be turned on and a target wind speed of the fresh air fan in combination with an indoor air quality parameter of the air conditioner and at least one of a user instruction of the air conditioner; The control unit is also configured to control the operating wind speed of the fresh air fan after the fresh air fan is turned on, in combination with the current operating mode of the air conditioner, the user instructions of the air conditioner, the indoor ambient temperature of the air conditioner, the outdoor ambient temperature of the air conditioner, and at least one of the target wind speeds of the fresh air fan, or to control the operating wind speed of the fresh air fan and control the operating frequency of the compressor.

9. An air conditioner, characterized in that: include: The control device for an air conditioner as claimed in claim 8.

10. A storage medium, characterized in that: The storage medium includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the air conditioner control method according to any one of claims 1 to 7.

11. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the air conditioner control method according to any one of claims 1 to 7 are implemented.

Images