An air conditioner and a control method, apparatus, storage medium, and program product thereof

Abstract

The application discloses a control method and device of an air conditioner, the air conditioner, a storage medium and a computer program product, and relates to the technical field of air conditioners. The method comprises the following steps: acquiring an outdoor environment temperature and an indoor environment temperature of the air conditioner under the condition that the air conditioner is running in a current operation mode; controlling the rotating direction of a motor, the rotating speed of the motor, and the position of a valve device according to the outdoor environment temperature of the air conditioner and in combination with the indoor environment temperature of the air conditioner, so as to adjust the wind direction of a one-way flow fresh air system; wherein the rotating direction of the motor comprises: the motor rotating in a preset first direction or the motor rotating in a preset second direction; and the position of the valve device comprises any one of the following positions: a preset first position, a preset second position and a preset third position. According to the scheme, the load of the fresh air machine is controlled to realize different flow directions of the fresh air in the cooling or heating mode, the demand of a user for switching the channel ventilation is met, and the user experience is improved.

Description

Technical Field

[0001] This invention belongs to the field of air conditioner technology, specifically relating to a control method, device, air conditioner, storage medium, and computer program product for an air conditioner, and particularly to a control method, device, air conditioner, storage medium, and computer program product for a fresh air air conditioner. Background Technology

[0002] In the relevant solutions, the fresh air system of air conditioners usually adopts a unidirectional flow fresh air scheme, that is, a scheme that only introduces fresh air without exhaust ducts, which cannot meet the user's need for ventilation when switching channels and affects the user experience.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The purpose of this invention is to provide a control method, device, air conditioner, storage medium, and computer program product for an air conditioner, in order to solve the problem that the fresh air system of an air conditioner usually adopts a unidirectional flow fresh air scheme, which cannot meet the user's need for ventilation when switching channels, thus affecting the user experience. The invention achieves the effect of controlling the load of the fresh air unit to realize different flow directions of the fresh air for cooling or heating, thereby meeting the user's need for ventilation when switching channels and improving the user experience.

[0005] This invention provides a control method for an air conditioner, the air conditioner having a unidirectional fresh air system; the unidirectional fresh air system includes: a fresh air duct disposed between an outdoor fresh air channel on the outdoor side and an indoor side, a motor disposed in the fresh air duct, and a valve device, a first air outlet, a second air outlet, and a third air outlet disposed in the outdoor fresh air channel, the third air outlet being connected to the fresh air duct, and the first air outlet and the second air outlet having different ventilation directions; when the valve device is in a preset first position, the third air outlet is connected to the second air outlet; when the valve device is in a preset second position, the third air outlet is connected to the first air outlet; when the valve device is in a preset third position, the third air outlet is simultaneously connected to both the first air outlet and the second air outlet; the control method for the air conditioner includes: when the air conditioner is operating in a current operating mode, acquiring the outdoor ambient temperature of the air conditioner and acquiring the indoor ambient temperature of the air conditioner; when the air conditioner... In the current operating mode, based on the outdoor ambient temperature of the air conditioner and in conjunction with the indoor ambient temperature of the air conditioner, the rotation direction of the motor is controlled, the speed of the motor is controlled, and the position of the valve device is controlled to adjust the airflow direction of the unidirectional fresh air system. The rotation direction of the motor includes either a preset first direction or a preset second direction; the preset first and preset second directions are opposite to each other. When the motor rotates in the preset first direction, the airflow direction of the unidirectional fresh air system is: air entering through the outdoor air vent of the air conditioner and exiting through the indoor air vent of the air conditioner. When the motor rotates in the preset second direction, the airflow direction of the unidirectional fresh air system is: air entering through the indoor air vent of the air conditioner and exiting through the outdoor air vent of the air conditioner. The position of the valve device includes any of the following positions: a preset first position, a preset second position, and a preset third position.

[0006] In some embodiments, the current operating mode of the air conditioner is the cooling mode. When the current operating mode of the air conditioner is the cooling mode, the rotation direction of the motor, the speed of the motor, and the position of the valve device are controlled based on the outdoor ambient temperature and the indoor ambient temperature. This includes: determining whether the outdoor ambient temperature is greater than a preset first cooling temperature threshold; if the outdoor ambient temperature is greater than the preset first cooling temperature threshold, controlling the motor to rotate in a preset second direction, controlling the motor speed to a preset high fan speed, and controlling the valve device to a preset third position; if the outdoor ambient temperature is less than or equal to the preset first cooling temperature threshold, controlling the rotation direction of the motor, the speed of the motor, and the position of the valve device are controlled based on the outdoor ambient temperature and the indoor ambient temperature.

[0007] In some embodiments, controlling the rotation direction of the motor, controlling the motor speed, and controlling the position of the valve device based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner includes: determining the difference between the outdoor ambient temperature and the indoor ambient temperature of the air conditioner, denoted as the indoor-outdoor temperature difference of the air conditioner; determining whether the indoor-outdoor temperature difference of the air conditioner is greater than a preset second cooling temperature threshold; wherein the preset second cooling temperature threshold is less than a preset first cooling temperature threshold; if it is determined that the indoor-outdoor temperature difference of the air conditioner is greater than the preset second cooling temperature threshold, then controlling the motor to rotate in a preset second direction, controlling the motor speed to a preset high fan speed, and controlling the valve device to a preset third position; if it is determined that the indoor-outdoor temperature difference of the air conditioner is less than or equal to the preset second cooling temperature threshold, then controlling the motor to rotate in a preset first direction, and controlling the motor speed and the position of the valve device based on the outdoor ambient temperature of the air conditioner.

[0008] In some embodiments, controlling the motor speed and the valve device position based on the outdoor ambient temperature of the air conditioner includes: if the outdoor ambient temperature of the air conditioner is less than or equal to a preset first cooling temperature threshold and greater than a preset third cooling temperature threshold, then controlling the motor speed to a preset low fan speed and controlling the valve device position to a preset first position; wherein the preset third cooling temperature threshold is greater than a preset second cooling temperature threshold; if the outdoor ambient temperature of the air conditioner is less than or equal to the preset third cooling temperature threshold and greater than a preset fourth cooling temperature threshold, then controlling the motor speed to a preset medium fan speed and controlling the valve device position to a preset third position; wherein the preset fourth cooling temperature threshold is greater than the preset second cooling temperature threshold; if the outdoor ambient temperature of the air conditioner is less than or equal to the preset fourth cooling temperature threshold, then controlling the motor speed to a preset high fan speed and controlling the valve device position to a preset third position.

[0009] In some embodiments, the current operating mode of the air conditioner is the heating mode. When the current operating mode of the air conditioner is the heating mode, based on the outdoor ambient temperature and the indoor ambient temperature, the rotation direction of the motor, the speed of the motor, and the position of the valve device are controlled. This includes: determining whether the outdoor ambient temperature is less than a preset first heating temperature threshold; if the outdoor ambient temperature is less than the preset first heating temperature threshold, controlling the motor to rotate in a preset second direction, controlling the motor speed to a preset high fan speed, and controlling the valve device to a preset third position; if the outdoor ambient temperature is greater than or equal to the preset first heating temperature threshold, controlling the rotation direction of the motor, the speed of the motor, and the position of the valve device are controlled based on the outdoor ambient temperature and the indoor ambient temperature.

[0010] In some embodiments, controlling the rotation direction of the motor, controlling the motor speed, and controlling the position of the valve device based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner includes: determining the difference between the outdoor ambient temperature and the indoor ambient temperature of the air conditioner, denoted as the indoor-outdoor temperature difference of the air conditioner; determining whether the indoor-outdoor temperature difference of the air conditioner is greater than a preset second heating temperature threshold; wherein the preset second heating temperature threshold is greater than a preset first heating temperature threshold; if it is determined that the indoor-outdoor temperature difference of the air conditioner is greater than the preset second heating temperature threshold, then controlling the motor to rotate in a preset second direction, controlling the motor speed to a preset high fan speed, and controlling the valve device to a preset third position; if it is determined that the indoor-outdoor temperature difference of the air conditioner is less than or equal to the preset second heating temperature threshold, then controlling the motor to rotate in a preset first direction, and controlling the motor speed and the position of the valve device based on the outdoor ambient temperature of the air conditioner.

[0011] In some embodiments, controlling the motor speed and the valve device position based on the outdoor ambient temperature of the air conditioner includes: if the outdoor ambient temperature of the air conditioner is greater than or equal to a preset first heating temperature threshold and less than a preset third heating temperature threshold, then controlling the motor speed to a preset low fan speed and controlling the valve device position to a preset second position; wherein the preset third heating temperature threshold is less than the preset second heating temperature threshold; if the outdoor ambient temperature of the air conditioner is greater than or equal to the preset third heating temperature threshold and less than a preset fourth heating temperature threshold, then controlling the motor speed to a preset medium fan speed and controlling the valve device position to a preset third position; wherein the preset fourth heating temperature threshold is greater than the preset second heating temperature threshold; if the outdoor ambient temperature of the air conditioner is greater than or equal to the preset fourth heating temperature threshold, then controlling the motor speed to a preset high fan speed and controlling the valve device position to a preset third position.

[0012] In conjunction with the above method, another aspect of the present invention provides a control device for an air conditioner, the air conditioner having a unidirectional fresh air system; the unidirectional fresh air system includes: a fresh air duct disposed between an outdoor fresh air channel on the outdoor side and an indoor side, a motor disposed in the fresh air duct, and a valve device, a first air outlet, a second air outlet, and a third air outlet disposed in the outdoor fresh air channel, the third air outlet being connected to the fresh air duct, and the first air outlet and the second air outlet having different ventilation directions; when the valve device is in a preset first position, the third air outlet is connected to the second air outlet; when the valve device is in a preset second position, the third air outlet is connected to the first air outlet; when the valve device is in a preset third position, the third air outlet is simultaneously connected to both the first air outlet and the second air outlet; the control device for the air conditioner includes: an acquisition unit configured to acquire the outdoor ambient temperature of the air conditioner and acquire the indoor ambient temperature of the air conditioner when the air conditioner is operating in a current operating mode. The control unit is configured to, in the current operating mode of the air conditioner, control the rotation direction of the motor, control the speed of the motor, and control the position of the valve device to adjust the airflow direction of the unidirectional fresh air system based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner; wherein, the rotation direction of the motor includes: the motor rotating in a preset first direction or the motor rotating in a preset second direction; the preset first direction and the preset second direction are opposite to each other; when the motor rotates in the preset first direction, the airflow direction of the unidirectional fresh air system is: the airflow direction from the outdoor air vent of the air conditioner to the indoor air vent of the air conditioner; when the motor rotates in the preset second direction, the airflow direction of the unidirectional fresh air system is: the airflow direction from the indoor air vent of the air conditioner to the outdoor air vent of the air conditioner; the position of the valve device includes any of the following positions: a preset first position, a preset second position, and a preset third position.

[0013] In some embodiments, the current operating mode of the air conditioner is the cooling mode; the control unit, when the current operating mode of the air conditioner is the cooling mode, controls the rotation direction of the motor, controls the speed of the motor, and controls the position of the valve device based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner, including: determining whether the outdoor ambient temperature of the air conditioner is greater than a preset first cooling temperature threshold; if it is determined that the outdoor ambient temperature of the air conditioner is greater than the preset first cooling temperature threshold, then controlling the motor to rotate in a preset second direction, controlling the speed of the motor to a preset high fan speed, and controlling the position of the valve device to a preset third position; if it is determined that the outdoor ambient temperature of the air conditioner is less than or equal to the preset first cooling temperature threshold, then controlling the rotation direction of the motor, controlling the speed of the motor, and controlling the position of the valve device based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner.

[0014] In some embodiments, the control unit controls the rotation direction of the motor, the rotation speed of the motor, and the position of the valve device based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner. This includes: determining the difference between the outdoor ambient temperature and the indoor ambient temperature of the air conditioner, denoted as the indoor-outdoor temperature difference; determining whether the indoor-outdoor temperature difference is greater than a preset second cooling temperature threshold; wherein the preset second cooling temperature threshold is less than a preset first cooling temperature threshold; if the indoor-outdoor temperature difference is greater than the preset second cooling temperature threshold, controlling the motor to rotate in a preset second direction, controlling the motor speed to a preset high fan speed, and controlling the valve device to a preset third position; if the indoor-outdoor temperature difference is less than or equal to the preset second cooling temperature threshold, controlling the motor to rotate in a preset first direction, controlling the motor speed based on the outdoor ambient temperature of the air conditioner, and controlling the position of the valve device.

[0015] In some embodiments, the control unit controls the motor speed and the valve device position based on the outdoor ambient temperature of the air conditioner, including: if the outdoor ambient temperature of the air conditioner is less than or equal to a preset first cooling temperature threshold and greater than a preset third cooling temperature threshold, then the motor speed is controlled to a preset low fan speed, and the valve device position is controlled to a preset first position; wherein the preset third cooling temperature threshold is greater than a preset second cooling temperature threshold; if the outdoor ambient temperature of the air conditioner is less than or equal to the preset third cooling temperature threshold and greater than a preset fourth cooling temperature threshold, then the motor speed is controlled to a preset medium fan speed, and the valve device position is controlled to a preset third position; wherein the preset fourth cooling temperature threshold is greater than the preset second cooling temperature threshold; if the outdoor ambient temperature of the air conditioner is less than or equal to the preset fourth cooling temperature threshold, then the motor speed is controlled to a preset high fan speed, and the valve device position is controlled to a preset third position.

[0016] In some embodiments, the current operating mode of the air conditioner is the heating mode; the control unit, when the current operating mode of the air conditioner is the heating mode, controls the rotation direction of the motor, controls the speed of the motor, and controls the position of the valve device based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner, including: determining whether the outdoor ambient temperature of the air conditioner is less than a preset first heating temperature threshold; if it is determined that the outdoor ambient temperature of the air conditioner is less than the preset first heating temperature threshold, then controlling the motor to rotate in a preset second direction, controlling the speed of the motor to a preset high fan speed, and controlling the position of the valve device to a preset third position; if it is determined that the outdoor ambient temperature of the air conditioner is greater than or equal to the preset first heating temperature threshold, then controlling the rotation direction of the motor, controlling the speed of the motor, and controlling the position of the valve device based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner.

[0017] In some embodiments, the control unit controls the rotation direction of the motor, the rotation speed of the motor, and the position of the valve device based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner. This includes: determining the difference between the outdoor ambient temperature and the indoor ambient temperature of the air conditioner, denoted as the indoor-outdoor temperature difference; determining whether the indoor-outdoor temperature difference is greater than a preset second heating temperature threshold; wherein the preset second heating temperature threshold is greater than a preset first heating temperature threshold; if the indoor-outdoor temperature difference is greater than the preset second heating temperature threshold, then the control unit controls the motor to rotate in a preset second direction, controls the motor speed to a preset high fan speed, and controls the valve device to a preset third position; if the indoor-outdoor temperature difference is less than or equal to the preset second heating temperature threshold, then the control unit controls the motor to rotate in a preset first direction, controls the motor speed based on the outdoor ambient temperature of the air conditioner, and controls the position of the valve device.

[0018] In some embodiments, the control unit controls the motor speed and the valve device position based on the outdoor ambient temperature of the air conditioner, including: if the outdoor ambient temperature of the air conditioner is greater than or equal to a preset first heating temperature threshold and less than a preset third heating temperature threshold, then the motor speed is controlled to a preset low fan speed, and the valve device position is controlled to a preset second position; wherein the preset third heating temperature threshold is less than the preset second heating temperature threshold; if the outdoor ambient temperature of the air conditioner is greater than or equal to the preset third heating temperature threshold and less than a preset fourth heating temperature threshold, then the motor speed is controlled to a preset medium fan speed, and the valve device position is controlled to a preset third position; wherein the preset fourth heating temperature threshold is greater than the preset second heating temperature threshold; if the outdoor ambient temperature of the air conditioner is greater than or equal to the preset fourth heating temperature threshold, then the motor speed is controlled to a preset high fan speed, and the valve device position is controlled to a preset third position.

[0019] In conjunction with the above-described device, the present invention further provides an air conditioner, comprising: the control device for the air conditioner described above.

[0020] In conjunction with the above method, the present invention further provides a storage medium comprising a stored program, wherein, when the program is executed, the device on which the storage medium is located executes the steps of the control method for the air conditioner described above.

[0021] In conjunction with the above method, the present invention further provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the control method for the air conditioner described above.

[0022] Therefore, the solution of the present invention addresses an air conditioner with a unidirectional fresh air system installed indoors. In this unidirectional fresh air system, the outdoor fresh air duct connects to the indoor fresh air unit inlet, fresh air unit body, and fresh air unit outlet via a fresh air pipe. A valve is installed within the outdoor fresh air duct, and an outdoor upper air outlet and an outdoor lower air outlet are installed on the flow side of the outdoor fresh air duct's air outlet. When the valve is in a first position, the air outlet at the outdoor fresh air duct (i.e., the third air outlet) is connected to the outdoor lower air outlet. When the valve is in a second position, the air outlet at the outdoor fresh air duct... The air vent (i.e., the third air vent) is connected to the outdoor upper air vent. When the valve is in the third position, the air vent at the outdoor fresh air duct (i.e., the third air vent) is simultaneously connected to both the outdoor upper air vent and the outdoor lower air vent. When the air conditioner is operating in cooling or heating mode, the position of the valve and the forward / reverse rotation mode of the motor in the fresh air unit are adjusted according to the indoor and outdoor air temperatures to control the load of the fresh air unit. Thus, by controlling the load of the fresh air unit, different flow directions of fresh air for cooling or heating are achieved to meet the user's need to switch duct ventilation, which affects the user experience.

[0023] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0024] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0025] Figure 1 This is a flowchart illustrating an embodiment of the control method for an air conditioner according to the present invention;

[0026] Figure 2 This is a schematic flowchart of an embodiment of the first process of controlling the rotation direction, speed and position of the motor 1 and the valve device in the cooling mode of the method of the present invention;

[0027] Figure 3 This is a flowchart illustrating an embodiment of the second process of controlling the rotation direction, speed, and position of the valve device in the cooling mode of the method of the present invention.

[0028] Figure 4 This is a flowchart illustrating an embodiment of the first process of controlling the rotation direction, speed, and position of the valve device in the heating mode of the method of the present invention.

[0029] Figure 5This is a flowchart illustrating an embodiment of the second process of controlling the rotation direction, speed, and position of the valve device in the heating mode of the method of the present invention.

[0030] Figure 6 This is a schematic diagram of the structure of an embodiment of the control device for an air conditioner according to the present invention;

[0031] Figure 7 This is a schematic diagram of the control process of a fresh air conditioner in cooling mode.

[0032] Figure 8 This is a schematic diagram of the control process of a fresh air conditioner in heating mode.

[0033] Figure 9 This is a structural diagram of a fresh air conditioning unit;

[0034] Figure 10 This is a schematic diagram of the air circulation channel in the forward rotation mode of the fresh air unit motor 1;

[0035] Figure 11 This is a schematic diagram of the air circulation channel in the reverse rotation mode of the fresh air unit motor 1;

[0036] Figure 12 This is a schematic diagram of the airflow channel for a single outdoor air vent (such as an outdoor upper vent); the diagram shows the reverse mode of motor 1, while the forward mode of motor 1 results in the opposite airflow direction.

[0037] Figure 13 This is a schematic diagram of the airflow channel for a single outdoor second air vent (such as an outdoor downwind vent); the diagram shows the reverse mode of motor 1, while the airflow direction is reversed when motor 1 rotates forward.

[0038] Figure 14 This is a schematic diagram of the airflow channel for the fully open outdoor vent of the fresh air unit; the diagram shows the reverse mode of motor 1, while the forward mode of motor 1 results in the opposite airflow direction.

[0039] Figure 15 This is an exploded view of a unidirectional fresh air system.

[0040] Referring to the accompanying drawings, the reference numerals in the embodiments of the present invention are as follows:

[0041] 1-Motor; 2-Axial fan blade; 3-Fresh air inlet; 4-Fresh air outlet; 5-Fresh air duct; 6-Outdoor fresh air passage; A-First outdoor air outlet (e.g., outdoor upper air outlet); B-Second outdoor air outlet (e.g., outdoor lower air outlet); C-Third outdoor air outlet; S1-First position; S2-Second position; S3-Third position; 102-Acquisition unit; 104-Control unit. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0043] Considering that the fresh air systems in relevant solutions typically employ a unidirectional airflow approach, where outdoor air is introduced into the room for both cooling and heating, while stale indoor air is expelled through gaps in doors and windows, this type of fresh air system presents several problems, such as:

[0044] 1. When the fresh air is turned on in cooling or heating mode, there is a serious risk of condensation when the temperature difference between indoors and outdoors is large, which may prevent the fresh air from being turned on under certain conditions and fail to meet the user's need for fresh air.

[0045] 2. It can only introduce outdoor ambient air into the room through the fresh air unit, and it cannot switch channels to exhaust indoor air to the outside through the fresh air unit. It cannot meet the user's need to exhaust stale air. If the user needs to exhaust indoor air, they cannot choose to switch channels.

[0046] In addition, some solutions disclose control schemes for fresh air conditioners, achieving precise control by adjusting the airflow of the fresh air unit and / or the set temperature of the air conditioner in a timely manner, preventing condensation on the fresh air unit, and making the unit's operation more reliable. However, this solution adjusts the set temperature of the air conditioner so that the room temperature is higher than the current dew point temperature, which seriously affects the comfort of cooling.

[0047] Therefore, the present invention proposes a control method for an air conditioner, specifically a control method for a fresh air air conditioner. For a unidirectional fresh air air conditioner, different positions of the outdoor air vents are set, and the indoor and outdoor air temperatures are monitored in real time. If the temperature difference between the indoor and outdoor air temperatures reaches the dew point temperature difference condition, the airflow direction of the fresh air unit is adjusted. Thus, by controlling the load of the fresh air unit, different flow directions of the fresh air for cooling or heating are achieved, realizing the purpose of preventing condensation in the fresh air unit. At the same time, in the reverse mode of motor 1, the low-temperature or high-temperature indoor gas is led out to the outdoor heat exchanger for heat recovery, increasing heat exchange efficiency and achieving better cooling or heating effect of the whole unit.

[0048] According to embodiments of the present invention, a control method for an air conditioner is provided, such as... Figure 1The diagram shows a flowchart of an embodiment of the method of the present invention. The air conditioner has a unidirectional fresh air system; the unidirectional fresh air system includes: a fresh air duct 5 disposed between an outdoor fresh air channel 6 on the outdoor side and an indoor side, a motor 1 disposed in the fresh air duct 5, and a valve device, a first air outlet, a second air outlet, and a third air outlet disposed in the outdoor fresh air channel 6, the third air outlet being connected to the fresh air duct 5, and the first air outlet and the second air outlet having different ventilation directions. Specifically, the air conditioner has an indoor side and an outdoor side, and the air conditioner has a unidirectional fresh air system. The indoor side of the unidirectional fresh air system has a fresh air fan, and the fresh air fan has a motor 1. The outdoor side of the unidirectional fresh air system has an outdoor fresh air duct 6, and the outdoor fresh air duct 6 has a valve device (such as a rotatable valve) and an outdoor air outlet. The outdoor air outlet includes a first air outlet, a second air outlet, and a third air outlet. The third air outlet is connected to the indoor side of the unidirectional fresh air system. The ventilation directions of the first air outlet and the second air outlet are different. For example, the first air outlet and the second air outlet are distributed on both sides of the outdoor heat exchanger on the outdoor side. Specifically, the first air outlet is located above the outdoor heat exchanger on the outdoor side, and the second air outlet is located below the outdoor heat exchanger. When the valve device is in a preset first position, the third air outlet is connected to the second air outlet. When the valve device is in a preset second position, the third air outlet is connected to the first air outlet. When the valve device is in a preset third position, the third air outlet is connected to both the first air outlet and the second air outlet. Figure 9 A schematic diagram of the structure of a fresh air conditioner. (See diagram below.) Figure 9 As shown, the fresh air air conditioner has an indoor unit and an outdoor unit. In the solution of this invention, the indoor side of the air conditioner mainly consists of a heat exchanger system, a unidirectional fresh air system, a main control system, and a structural system, including the unidirectional fresh air system. Figure 15 This is an exploded diagram of a unidirectional fresh air system. Figure 15 As shown, the unidirectional fresh air system consists of a motor 1, an axial fan blade 2, a fresh air inlet 3, a fresh air outlet 4, a fresh air duct 5, and an outdoor fresh air channel 6. The outdoor fresh air channel 6 is connected to the first end of the fresh air duct 5, and the fresh air inlet 3 is connected to the second end of the fresh air duct 5. The axial fan blade 2 is mounted on the motor 1 and is positioned between the fresh air outlet 4 and the fresh air inlet 3. The axial fan blade 2 and the motor 1 together form the fresh air unit. Figure 10 This is a schematic diagram of the air circulation channel in the forward rotation mode of the fresh air unit motor 1. Figure 11 This is a schematic diagram of the air circulation channel in the reverse rotation mode of the fresh air unit motor 1. Figure 10 and Figure 11 As shown, the second end of the fresh air duct 5 is connected to the inlet end of the indoor fresh air unit, and the first end of the fresh air duct 5 is connected to the outlet end of the outdoor fresh air duct 6 (e.g., Figures 12 to 14The outdoor third air outlet C is shown. The fresh air duct 5 is equipped with heat-insulating sponge to prevent condensation, thus avoiding the formation of condensation and dripping onto the ground due to the large temperature difference between the air inside and outside the fresh air duct 5.

[0049] Figure 12 This is a schematic diagram of the airflow channel for a single outdoor vent (such as an outdoor updraft vent) of a fresh air unit. Figure 13 This is a schematic diagram of the air circulation channel for a single outdoor second air vent (such as an outdoor downwind vent). Figure 14 This is a schematic diagram of the airflow channel when the outdoor vent of the fresh air unit is fully open. In the solution of this invention, as... Figure 12 , Figure 13 and Figure 14 As shown, the outdoor fresh air duct 6 is installed on the outdoor unit and is equipped with an outdoor first air outlet (such as an outdoor upper air outlet) A, an outdoor second air outlet (such as an outdoor lower air outlet) B, and an outdoor third air outlet C. The outdoor third air outlet C is connected to the first end of the fresh air duct 5. The outdoor fresh air duct 6 is equipped with a rotatable valve. By adjusting the position of the rotatable valve, the mode can be switched between opening the outdoor first air outlet (such as an outdoor upper air outlet) A, opening the outdoor second air outlet (such as an outdoor lower air outlet) B, and fully opening the outdoor first air outlet (such as an outdoor upper air outlet) A and the outdoor second air outlet (such as an outdoor lower air outlet) B. Specifically, it can realize the switching of three channels.

[0050] like Figure 12 As shown, the air intake channel of the first outdoor air vent (such as the outdoor upwind vent) A is: the third outdoor air vent C is the first outdoor air vent (such as the outdoor upwind vent) A. Figure 12 The example shown is in reverse mode for motor 1; in forward mode for motor 1, the airflow direction is reversed. Figure 12 In the example shown, opening the first outdoor air vent (such as the outdoor upwind vent) A means: adjusting the rotatable valve to the second position S2 to open the first outdoor air vent (such as the outdoor upwind vent) A.

[0051] like Figure 13 As shown, the air intake channel of the second outdoor air vent (such as the outdoor downwind vent) B is: the third outdoor air vent C – the second outdoor air vent (such as the outdoor downwind vent) B; Figure 13 The example shown is in reverse mode for motor 1; in forward mode for motor 1, the airflow direction is reversed. Figure 13 In the example shown, opening the second outdoor vent (such as the downwind vent) B means: adjusting the rotatable valve to the first position S1 to open the second outdoor vent (such as the downwind vent) B.

[0052] like Figure 14As shown, the upper and lower inlet full air intake channels are: the third outdoor air outlet C, the first outdoor air outlet (such as the outdoor upper air outlet) A, and the second outdoor air outlet (such as the outdoor lower air outlet) B. Figure 14 The example shown is in reverse mode for motor 1; in forward mode for motor 1, the airflow direction is reversed. Figure 14 In the example shown, the outdoor air vents are fully open: Adjust the rotatable valve to the third position S3, and the first outdoor air vent (such as the outdoor upper air vent) A and the second outdoor air vent (such as the outdoor lower air vent) B are fully opened.

[0053] In the solution of this invention, for a unidirectional flow fresh air air conditioner, the outdoor air duct (such as outdoor fresh air channel 6) is equipped with upper and lower dual air outlets (i.e., outdoor first air outlet (such as outdoor upper air outlet) A and outdoor second air outlet (such as outdoor lower air outlet) B). Outdoor first air outlet (such as outdoor upper air outlet) A is located at the upper end of the outdoor heat exchanger, and lower air outlet is located at the lower end of the outdoor heat exchanger. A rotatable valve is installed in the outdoor air duct. By adjusting the position of the rotatable valve, the mode switching of opening only outdoor first air outlet (such as outdoor upper air outlet) A, opening only outdoor second air outlet (such as outdoor lower air outlet) B, and fully opening outdoor first air outlet (such as outdoor upper air outlet) A and outdoor second air outlet (such as outdoor lower air outlet) B can be achieved. Specifically, the optimal solution is selected by the control logic. For details, please refer to [reference needed]. Figure 7 and Figure 8 The example shown.

[0054] In the solution of the present invention, such as Figure 1 As shown, the control method of the air conditioner includes steps S110 to S120.

[0055] In step S110, when the air conditioner is operating in the current operating mode, the outdoor ambient temperature (e.g., outdoor ambient temperature T1) of the air conditioner is obtained, and the indoor ambient temperature (e.g., indoor ambient temperature T2) of the air conditioner is obtained.

[0056] In step S120, under the current operating mode of the air conditioner, the rotation direction of the motor 1 is controlled according to the outdoor ambient temperature of the air conditioner and the indoor ambient temperature of the air conditioner, the speed of the motor 1 is controlled, and the position of the valve device is controlled to adjust the airflow direction of the unidirectional fresh air system.

[0057] The rotation direction of the motor 1 includes: the motor 1 rotating in a preset first direction, or the motor 1 rotating in a preset second direction; the preset first direction and the preset second direction are opposite to each other; when the motor 1 rotates in the preset first direction, the airflow direction of the unidirectional fresh air system is: the airflow direction from the outdoor air vent of the air conditioner to the indoor air vent of the air conditioner; when the motor 1 rotates in the preset second direction, the airflow direction of the unidirectional fresh air system is: the airflow direction from the indoor air vent of the air conditioner to the outdoor air vent of the air conditioner.

[0058] The valve device can be located in any of the following positions: a preset first position, a preset second position, and a preset third position. In the solution of this invention, for a unidirectional flow fresh air conditioner, different positions of the outdoor air vent are set. Indoor and outdoor air temperatures are monitored in real time. The main control system determines whether the temperature difference between indoor and outdoor air reaches the dew point difference condition. If so, the direction of the fresh air fan is adjusted. By controlling the load of the fresh air fan, different flow directions of the fresh air for cooling or heating are achieved. For example, the flow can be adjusted from outdoor air being introduced into the indoor side to indoor air being exhausted to the outdoor side, reducing the risk of condensation in the air conditioner and solving the problem of fresh air condensation in cooling or heating modes. Simultaneously, in the reverse rotation mode of motor 1, low-temperature or high-temperature indoor gas is drawn out to the outdoor heat exchanger for heat recovery, increasing heat exchange efficiency and achieving better cooling or heating effects for the entire unit. This also solves the problem that the fresh air conditioner cannot start when there is a large temperature difference between indoor and outdoor air, making condensation easy, thus achieving the effect of running the fresh air fan 24 / 7.

[0059] Specifically, the motor 1 rotates in a preset first direction, including: the motor 1 rotates forward; the motor 1 rotates in a preset second direction, including: the motor 1 rotates in a preset second direction; that is, the rotation direction of the motor 1 includes: the motor 1 rotates forward, or the motor 1 rotates in reverse; wherein, when the motor 1 rotates forward, the airflow direction of the unidirectional fresh air system is: the airflow direction from the outdoor air vent of the air conditioner to the indoor air vent of the air conditioner; when the motor 1 rotates in reverse, the airflow direction of the unidirectional fresh air system is: the airflow direction from the indoor air vent of the air conditioner to the outdoor air vent of the air conditioner.

[0060] exist Figures 12 to 14 In the example shown, "motor 1 rotating forward" means that when the fresh air unit motor 1 starts rotating forward, the air circulation channel draws in fresh outdoor air through the outdoor side vent and exhausts indoor air through the indoor side vent, thus creating air exchange. For details, please refer to [link / reference needed]. Figure 10 The example shown. In Figures 12 to 14In the example shown, "motor 1 reversing" means that the fresh air unit motor 1 starts in reverse, and the air circulation channel draws in air from the indoor side vents and exhausts air from the outdoor side vents. This creates a slight negative pressure zone indoors, allowing fresh outdoor air to be drawn in through gaps in doors and windows, thus exchanging air. For more details, please refer to [link / reference needed]. Figure 11 The example shown.

[0061] In the solution of this invention, the location of the outdoor air vent is set at different positions to form any one of the following channels: a single outdoor first air vent (such as an outdoor upper air vent) A air inlet channel, a single outdoor second air vent (such as an outdoor lower air vent) B air inlet channel, or a full air inlet channel with both upper and lower inlets. In the reverse rotation mode of motor 1, the outdoor heat exchanger recovers and utilizes heat by exchanging heat with the drawn indoor air, increasing the heat exchange efficiency of the outdoor heat exchanger and solving the problem of energy loss when indoor air is exhausted outdoors by the fresh air air conditioner, thus reducing energy loss. Specifically, in the air conditioner's cooling mode, the indoor low-temperature gas exchanges heat with the outdoor high-temperature gas; in the air conditioner's heating mode, the indoor high-temperature gas exchanges heat with the outdoor low-temperature gas.

[0062] In some implementations, the current operating mode of the air conditioner is the cooling mode.

[0063] In step S120, when the current operating mode of the air conditioner is the cooling mode, the specific process of controlling the rotation direction of the motor 1, controlling the speed of the motor 1, and controlling the position of the valve device based on the outdoor ambient temperature of the air conditioner and in combination with the indoor ambient temperature of the air conditioner is described in the following exemplary description.

[0064] The following is combined with Figure 2 The diagram shows an embodiment of the first process of controlling the rotation direction, speed and position of the motor 1 and the valve device in the cooling mode in the method of the present invention. It further illustrates the specific process of the first process of controlling the rotation direction, speed and position of the motor 1 and the valve device in the cooling mode in step S120, including steps S210 to S230.

[0065] Step S210: If the current operating mode of the air conditioner is the cooling mode, determine whether the outdoor ambient temperature of the air conditioner is greater than a preset first cooling temperature threshold. The preset first cooling temperature threshold is, for example, 45°C.

[0066] Step S220: When the current operating mode of the air conditioner is the cooling mode, if it is determined that the outdoor ambient temperature of the air conditioner is greater than the preset first cooling temperature threshold, then the motor 1 is controlled to rotate in the preset second direction, the speed of the motor 1 is controlled to the preset high fan speed, and the position of the valve device is controlled to the preset third position.

[0067] Step S230: When the current operating mode of the air conditioner is the cooling mode, if it is determined that the outdoor ambient temperature of the air conditioner is less than or equal to the preset first cooling temperature threshold, then the rotation direction of the motor 1 is controlled, the speed of the motor 1 is controlled, and the position of the valve device is controlled according to the outdoor ambient temperature and the indoor ambient temperature of the air conditioner.

[0068] In the solution of the present invention, the air conditioner is in cooling operation, the fresh air unit is turned on, the air conditioner detects the outdoor ambient temperature T1 and the indoor ambient temperature T2, and the difference between the outdoor ambient temperature and the indoor ambient temperature is the indoor-outdoor temperature difference ΔT, which is determined by the control logic of the fresh air air conditioner in cooling mode. Figure 7 This is a schematic diagram of the control flow of a fresh air conditioner in cooling mode. Figure 7 As shown, the control process of a fresh air conditioner in cooling mode includes:

[0069] Step 11: First, determine whether the outdoor ambient temperature T1 is greater than 45℃. If yes, proceed to step 12; otherwise, proceed to step 13.

[0070] Step 12: If the outdoor ambient temperature T1 > 45℃, then motor 1 will reverse, the outdoor air vents will be fully opened, and the speed of motor 1 will be adjusted to the high fan speed.

[0071] Step 13: If the outdoor ambient temperature T1 ≤ 45℃, proceed to the next judgment condition, that is, determine whether the indoor and outdoor temperature difference ΔT > 13℃ is satisfied.

[0072] In the solution of this invention, in cooling mode, when the outdoor ambient temperature T1 > 45°C, the temperature is too high. When the indoor fresh air outlet is close to the air conditioner outlet, the hot air easily mixes with the cold air blown out by the air conditioner, causing the air conditioner to blow hot air while cooling, and easily causing condensation on the surface of the air conditioner outlet. At this time, the fan (such as motor 1) is adjusted to reverse mode to exhaust air to the outside. Outdoor fresh air is introduced through gaps in doors and windows, away from the air conditioner outlet, and has a large air intake area and low air intake speed, which is less likely to cause poor comfort. At the same time, the air blown out at the outdoor heat exchanger is low-temperature gas, which can further cool the outdoor heat exchanger, recover air energy, and increase the heat exchange efficiency of the air conditioner at high temperatures.

[0073] In some embodiments, in step S230, when the current operating mode of the air conditioner is the cooling mode of the air conditioner, and when it is determined that the outdoor ambient temperature of the air conditioner is less than or equal to a preset first cooling temperature threshold, the specific process of controlling the rotation direction of the motor 1, controlling the speed of the motor 1, and controlling the position of the valve device according to the outdoor ambient temperature and the indoor ambient temperature of the air conditioner is described in the following exemplary description.

[0074] The following is combined with Figure 3 The diagram shows an embodiment of the second process of controlling the rotation direction, speed and position of the motor 1 and the valve device in the cooling mode in the method of the present invention. It further illustrates the specific process of the second process of controlling the rotation direction, speed and position of the motor 1 and the valve device in the cooling mode in step S230, including steps S310 to S340.

[0075] Step S310: When the current operating mode of the air conditioner is the cooling mode of the air conditioner, and when it is determined that the outdoor ambient temperature of the air conditioner is less than or equal to the preset first cooling temperature threshold, the difference between the outdoor ambient temperature of the air conditioner and the indoor ambient temperature of the air conditioner is determined and recorded as the indoor-outdoor temperature difference of the air conditioner (e.g., indoor-outdoor temperature difference ΔT).

[0076] Step S320: When the current operating mode of the air conditioner is the cooling mode, and the outdoor ambient temperature of the air conditioner is determined to be less than or equal to a preset first cooling temperature threshold, determine whether the indoor and outdoor temperature difference of the air conditioner is greater than a preset second cooling temperature threshold; wherein, the preset second cooling temperature threshold is less than the preset first cooling temperature threshold, and the preset second cooling temperature threshold is, for example, 13°C.

[0077] Step S330: When the current operating mode of the air conditioner is the cooling mode, and the outdoor ambient temperature of the air conditioner is determined to be less than or equal to a preset first cooling temperature threshold, if the indoor and outdoor temperature difference of the air conditioner is determined to be greater than a preset second cooling temperature threshold, then the motor 1 is controlled to rotate in a preset second direction, the speed of the motor 1 is controlled to a preset high fan speed, and the position of the valve device is controlled to a preset third position.

[0078] Step S340: When the current operating mode of the air conditioner is the cooling mode, and the outdoor ambient temperature of the air conditioner is determined to be less than or equal to a preset first cooling temperature threshold, if the indoor and outdoor temperature difference of the air conditioner is determined to be less than or equal to a preset second cooling temperature threshold, then the motor 1 is controlled to rotate in a preset first direction, and the speed of the motor 1 is controlled according to the outdoor ambient temperature of the air conditioner, and the position of the valve device is controlled.

[0079] Specifically, such as Figure 7 As shown, the control process of a fresh air conditioner in cooling mode also includes:

[0080] In step 13, if the outdoor ambient temperature T1 ≤ 45℃, then determine whether the indoor-outdoor temperature difference ΔT > 13℃ is satisfied: if yes, proceed to step 14; otherwise, proceed to step 15.

[0081] Step 14: If the outdoor ambient temperature T1≤45℃ and the indoor-outdoor temperature difference ΔT>13℃, it is determined that condensation is likely to occur. To avoid condensation in the indoor unit, motor 1 is reversed, air is exhausted from the indoor unit to the outdoor unit, the outdoor air vent is fully opened, and the speed of motor 1 is adjusted to the high fan speed.

[0082] Step 15: If the outdoor ambient temperature T1≤45℃ and the indoor-outdoor temperature difference ΔT≤13℃, it is determined that condensation is unlikely to occur. Motor 1 rotates forward, and air is drawn into the room from the outside. The speed of motor 1 and the mode of the outdoor air vent are determined and set in the following ways, specifically by referring to steps 16, 17 and 18.

[0083] In the solution of the present invention, in the cooling mode, when the temperature difference between indoor air temperature and outdoor air temperature is large, the control of the fresh air flow direction under different environments is realized by controlling the load of the fresh air unit. For example, the fresh air is adjusted from being introduced into the room to being exhausted to the outside, which solves the problem of poor comfort caused by the introduction of fresh air by the fresh air air conditioner and realizes comfortable fresh air.

[0084] In some embodiments, in step S340, when the current operating mode of the air conditioner is the cooling mode, and the outdoor ambient temperature of the air conditioner is determined to be less than or equal to a preset first cooling temperature threshold, and the indoor-outdoor temperature difference of the air conditioner is determined to be less than or equal to a preset second cooling temperature threshold, and the motor 1 is controlled to rotate in a preset first direction, the speed of the motor 1 is controlled according to the outdoor ambient temperature of the air conditioner, and the position of the valve device is controlled, including any of the following cooling control scenarios:

[0085] The first cooling control scenario: If the outdoor ambient temperature of the air conditioner is less than or equal to a preset first cooling temperature threshold and greater than a preset third cooling temperature threshold, then the speed of the motor 1 is controlled to a preset low fan speed, and the position of the valve device is controlled to a preset first position; wherein, the preset third cooling temperature threshold is greater than the preset second cooling temperature threshold, and the preset third cooling temperature threshold is, for example, 35°C.

[0086] The second cooling control scenario: If the outdoor ambient temperature of the air conditioner is less than or equal to a preset third cooling temperature threshold and greater than a preset fourth cooling temperature threshold, then the speed of the motor 1 is controlled to a preset medium fan speed, and the position of the valve device is controlled to a preset third position; wherein, the preset fourth cooling temperature threshold is greater than the preset second cooling temperature threshold, and the preset fourth cooling temperature threshold is, for example, 30°C.

[0087] The third cooling control scenario: If the outdoor ambient temperature of the air conditioner is less than or equal to the preset fourth cooling temperature threshold, then the speed of the motor 1 is controlled to the preset high fan speed, and the position of the valve device is controlled to the preset third position.

[0088] Specifically, such as Figure 7 As shown, the control process of a fresh air conditioner in cooling mode also includes:

[0089] Step 16: When the outdoor ambient temperature T1 ≤ 30℃, the outdoor air vents are fully open and motor 1 is running at high speed.

[0090] In step 16, the outdoor ambient temperature T1 is ≤ 30°C. The difference between the outdoor ambient temperature T1 and the indoor ambient temperature is small and close to the human comfort temperature of 27°C, so it is unlikely to cause poor human comfort. Therefore, the outdoor air vents are fully open, the first outdoor air vent (such as the outdoor upper air vent) A and the second outdoor air vent (such as the outdoor lower air vent) B are fully open, and the motor 1 is running at high speed to increase the air exchange efficiency in the room.

[0091] Step 17: When 30℃ < outdoor ambient temperature T1 ≤ 35℃, the outdoor vents are fully open and motor 1 operates in wind mode.

[0092] In step 17, the air in this temperature range is relatively hot, so it is not advisable to introduce a large volume of outdoor fresh air to avoid affecting the comfort experience. Therefore, the windshield mode of motor 1 is selected.

[0093] Step 18: When 35℃ < outdoor ambient temperature T1 ≤ 45℃, open only the second outdoor vent on the lower outdoor side (such as the outdoor downwind vent) B, and run motor 1 at low speed.

[0094] In step 18, the air in this temperature range is overheated, so it is necessary to reduce the high load caused by the introduction of hot outdoor air and the impact on comfort. At the same time, the outdoor heat exchanger is in a heating state, and the hot air is lighter and rises, causing the temperature at the upper air outlet to be higher than that at the lower air outlet. Therefore, it is selected to open the second outdoor air outlet (such as the outdoor lower air outlet) B alone to reduce the high load caused by the introduction of hot outdoor air and improve comfort.

[0095] In some implementations, the current operating mode of the air conditioner is the heating mode.

[0096] In step S120, when the current operating mode of the air conditioner is the heating mode, the specific process of controlling the rotation direction of the motor 1, controlling the speed of the motor 1, and controlling the position of the valve device based on the outdoor ambient temperature of the air conditioner and in combination with the indoor ambient temperature of the air conditioner is described in the following exemplary description.

[0097] The following is combined with Figure 4 The diagram shows an embodiment of the first process of controlling the rotation direction, speed and position of the motor 1 and the valve device in the heating mode in the method of the present invention. It further illustrates the specific process of the first process of controlling the rotation direction, speed and position of the motor 1 and the valve device in the heating mode in step S120, including steps S410 to S430.

[0098] Step S410: If the current operating mode of the air conditioner is the heating mode, determine whether the outdoor ambient temperature of the air conditioner is less than a preset first heating temperature threshold; wherein, the preset first heating temperature threshold is, for example, -5℃.

[0099] Step S420: When the current operating mode of the air conditioner is the heating mode, if it is determined that the outdoor ambient temperature of the air conditioner is less than the preset first heating temperature threshold, then the motor 1 is controlled to rotate in the preset second direction, the speed of the motor 1 is controlled to the preset high fan speed, and the position of the valve device is controlled to the preset third position.

[0100] Step S430: When the current operating mode of the air conditioner is the heating mode, if it is determined that the outdoor ambient temperature of the air conditioner is greater than or equal to the preset first heating temperature threshold, then the rotation direction of the motor 1 is controlled, the speed of the motor 1 is controlled, and the position of the valve device is controlled according to the outdoor ambient temperature and the indoor ambient temperature of the air conditioner.

[0101] In the solution of the present invention, the air conditioner is in heating mode and the fresh air unit is turned on. The air conditioner detects the outdoor ambient temperature T1 and the indoor ambient temperature T2. The difference between the outdoor ambient temperature and the indoor ambient temperature is the indoor-outdoor temperature difference ΔT, which is determined by the control logic of the fresh air air conditioner in heating mode. Figure 8 This is a schematic diagram of the control flow of a fresh air conditioner in heating mode. (Example) Figure 8 As shown, the control process of a fresh air conditioner in heating mode includes:

[0102] Step 21: First, determine whether the outdoor ambient temperature T1 < -5℃ is met. If yes, proceed to step 22; otherwise, proceed to step 23.

[0103] Step 22: If the outdoor ambient temperature T1 < -5℃, then motor 1 will reverse, the outdoor air vents will be fully opened, and the speed of motor 1 will be adjusted to the high setting.

[0104] Step 23: If the outdoor ambient temperature T1 ≥ -5℃, proceed to the next judgment condition, that is, determine whether the indoor and outdoor temperature difference ΔT > 10℃ is satisfied.

[0105] In the solution of this invention, in heating mode, when the outdoor ambient temperature T1 < -5°C, and the indoor ambient temperature T1 is generally above 10°C, the indoor-outdoor temperature difference ΔT is large. This can cause condensation inside the fresh air component and at the air outlet due to heat exchange, making it unsuitable for direct introduction into the room. Therefore, a reverse rotation mode for motor 1 is adopted to avoid condensation inside the fresh air component and at the air outlet due to heat exchange, allowing direct introduction into the room. Simultaneously, the air blown out from the outdoor heat exchanger is high-temperature gas, allowing the outdoor heat exchanger to recover air energy, reduce the load, and increase the heat exchange efficiency of the air conditioner at high temperatures.

[0106] In some embodiments, in step S430, when the current operating mode of the air conditioner is the heating mode of the air conditioner, and when it is determined that the outdoor ambient temperature of the air conditioner is less than or equal to a preset first heating temperature threshold, the specific process of controlling the rotation direction of the motor 1, controlling the speed of the motor 1, and controlling the position of the valve device according to the outdoor ambient temperature and the indoor ambient temperature of the air conditioner is described in the following exemplary description.

[0107] The following is combined with Figure 5 The flowchart shown is a schematic diagram of an embodiment of the second process of controlling the rotation direction, speed and position of the motor 1 and the valve device in the heating mode in the method of the present invention. It further illustrates the specific process of the second process of controlling the rotation direction, speed and position of the motor 1 and the valve device in the heating mode in step S430, including steps S510 to S540.

[0108] Step S510: When the current operating mode of the air conditioner is the heating mode of the air conditioner, and when it is determined that the outdoor ambient temperature of the air conditioner is greater than or equal to the preset first heating temperature threshold, the difference between the outdoor ambient temperature of the air conditioner and the indoor ambient temperature of the air conditioner is determined and recorded as the indoor-outdoor temperature difference of the air conditioner (e.g., indoor-outdoor temperature difference ΔT).

[0109] Step S520: When the current operating mode of the air conditioner is the heating mode, and the outdoor ambient temperature of the air conditioner is determined to be greater than or equal to a preset first heating temperature threshold, determine whether the indoor and outdoor temperature difference of the air conditioner is greater than a preset second heating temperature threshold; wherein, the preset second heating temperature threshold is greater than the preset first heating temperature threshold, and the preset second heating temperature threshold is, for example, 10°C.

[0110] Step S530: When the current operating mode of the air conditioner is the heating mode, and the outdoor ambient temperature of the air conditioner is determined to be greater than or equal to a preset first heating temperature threshold, if the indoor and outdoor temperature difference of the air conditioner is determined to be greater than a preset second heating temperature threshold, then the motor 1 is controlled to rotate in a preset second direction, the speed of the motor 1 is controlled to a preset high fan speed, and the position of the valve device is controlled to a preset third position.

[0111] Step S540: When the current operating mode of the air conditioner is the heating mode, and the outdoor ambient temperature of the air conditioner is determined to be greater than or equal to a preset first heating temperature threshold, if the indoor-outdoor temperature difference of the air conditioner is determined to be less than or equal to a preset second heating temperature threshold, then the motor 1 is controlled to rotate in a preset first direction, and the speed of the motor 1 is controlled according to the outdoor ambient temperature of the air conditioner, and the position of the valve device is controlled. Specifically, as shown... Figure 8 As shown, the control process of a fresh air conditioner in heating mode also includes:

[0112] In step 23, if the outdoor ambient temperature T1 ≥ -5℃, then determine whether the indoor-outdoor temperature difference ΔT > 10℃ is satisfied: if yes, proceed to step 24; otherwise, proceed to step 25.

[0113] Step 24: If the outdoor ambient temperature T1 ≥ -5℃, and the indoor-outdoor temperature difference ΔT > 10℃, it is determined that condensation is likely to occur. To avoid condensation in the indoor unit, motor 1 is reversed, air is exhausted from the indoor unit to the outdoor unit, the outdoor air vent is fully opened, and the speed of motor 1 is adjusted to the high fan speed.

[0114] Step 25: If the outdoor ambient temperature T1 ≥ -5℃ and the indoor-outdoor temperature difference ΔT ≤ 10℃, it is determined that condensation is unlikely to occur. Motor 1 rotates forward, and air is drawn into the room from the outside. The speed of motor 1 and the mode of the outdoor air vent are determined and set in the following ways, specifically in steps 26, 27 and 28.

[0115] In the solution of the present invention, in the heating mode, when the temperature difference between indoor air temperature and outdoor air temperature is large, the control of the fresh air flow direction under different environments is realized by controlling the load of the fresh air unit. For example, the fresh air is adjusted from being introduced into the room to being exhausted to the outside, which solves the problem of poor comfort caused by the introduction of fresh air by the fresh air air conditioner and realizes comfortable fresh air.

[0116] In some embodiments, in step S540, when the current operating mode of the air conditioner is the air conditioner's heating mode, and when it is determined that the outdoor ambient temperature of the air conditioner is less than or equal to a preset first heating temperature threshold, and when it is determined that the indoor and outdoor temperature difference of the air conditioner is greater than or equal to a preset second heating temperature threshold, and when the motor 1 is controlled to rotate in a preset first direction, the speed of the motor 1 is controlled according to the outdoor ambient temperature of the air conditioner, and the position of the valve device is controlled, including any of the following heating control situations:

[0117] The first heating control scenario: If the outdoor ambient temperature of the air conditioner is greater than or equal to the preset first heating temperature threshold and less than the preset third heating temperature threshold, then the speed of the motor 1 is controlled to the preset low fan speed, and the position of the valve device is controlled to the preset second position; wherein, the preset third heating temperature threshold is less than the preset second heating temperature threshold, and the preset third heating temperature threshold is, for example, 5°C.

[0118] The second heating control scenario: If the outdoor ambient temperature of the air conditioner is greater than or equal to the preset third heating temperature threshold and less than the preset fourth heating temperature threshold, then the speed of the motor 1 is controlled to the preset medium fan speed, and the position of the valve device is controlled to the preset third position; wherein, the preset fourth heating temperature threshold is greater than the preset second heating temperature threshold, and the preset fourth heating temperature threshold is, for example, 15°C.

[0119] The third heating control scenario: If the outdoor ambient temperature of the air conditioner is greater than or equal to a preset fourth heating temperature threshold, then the speed of motor 1 is controlled to a preset high fan speed, and the valve device is controlled to a preset third position. Specifically, as shown... Figure 8 As shown, the control process of a fresh air conditioner in heating mode also includes:

[0120] Step 26: When -5℃≤outdoor ambient temperature T1<5℃, open the outdoor air vent on the outdoor side (such as the outdoor upper air vent) A, and the motor 1 runs at low speed.

[0121] In step 26, the air in this temperature range is too cold. It is necessary to reduce the high load caused by the introduction of cold outdoor air and the resulting impact on comfort. At the same time, the outdoor heat exchanger is in cooling mode, and the cold air is heavier and sinks. This causes the temperature at the downwind vent to be lower than that at the upwind vent. Therefore, it is selected to open only the first outdoor vent on the upper outdoor side (such as the outdoor upwind vent) A to reduce the high load caused by the introduction of cold outdoor air and improve comfort.

[0122] Step 27: When 5℃≤outdoor ambient temperature T1<15℃, the outdoor vents are fully open and motor 1 is running at the wind speed setting.

[0123] In step 27, the air in this temperature range is relatively cold, so it is not advisable to introduce a large volume of fresh outdoor air to avoid affecting the comfort experience. Therefore, the wind speed setting of motor 1 is selected to improve the comfort experience.

[0124] Step 28: When 15℃ ≤ outdoor ambient temperature T1, the outdoor air vents are fully open and motor 1 is running at high speed.

[0125] In step 28, the difference between the outdoor air temperature and the indoor ambient temperature in this temperature range is small, which is unlikely to cause poor human comfort. Therefore, the first outdoor air vent (such as the outdoor upper air vent) A and the second outdoor air vent (such as the outdoor lower air vent) B are fully opened on the outdoor side, and motor 1 is operated at high speed to increase the air exchange efficiency in the room.

[0126] The solution of this invention is for a unidirectional flow fresh air air conditioner. By controlling the load of the fresh air unit, different flow directions of the fresh air for cooling or heating are achieved, thereby achieving the purpose of preventing condensation in the fresh air unit. At the same time, in the reverse mode of motor 1, the indoor low-temperature or high-temperature gas is led out to the outdoor heat exchanger for heat recovery, increasing heat exchange efficiency and achieving better cooling or heating effect of the whole unit.

[0127] The technical solution of this embodiment addresses an air conditioner with a unidirectional fresh air system installed indoors. In this system, the outdoor fresh air duct 6 connects to the indoor fresh air unit inlet, fresh air unit body, and fresh air unit outlet via the fresh air duct 5. A valve is installed within the outdoor fresh air duct 6. An outdoor upper air outlet A and an outdoor lower air outlet B are located on the flow side of the outdoor fresh air duct 6. When the valve is in the first position, the air outlet (i.e., the third air outlet) in the outdoor fresh air duct 6 is connected to the outdoor lower air outlet B. When the valve is in the second position, the outdoor fresh air duct... The air vent at point 6 (i.e., the third air vent) is connected to the outdoor upper air vent A. When the valve is in the third position, the air vent at point 6 of the outdoor fresh air duct (i.e., the third air vent) is simultaneously connected to both the outdoor upper air vent A and the outdoor lower air vent B. When the air conditioner is operating in cooling or heating mode, the position of the valve and the forward / reverse rotation mode of the motor in the fresh air unit are adjusted according to the indoor and outdoor air temperatures to control the load of the fresh air unit. Thus, by controlling the load of the fresh air unit, different flow directions of fresh air for cooling or heating are achieved to meet the user's need to switch ventilation channels, which affects the user experience.

[0128] According to an embodiment of the present invention, a control device for an air conditioner corresponding to the control method for an air conditioner is also provided. See also Figure 6The diagram shows a structural schematic of an embodiment of the device of the present invention. The air conditioner has a unidirectional fresh air system; the unidirectional fresh air system includes: a fresh air duct 5 disposed between an outdoor fresh air channel 6 on the outdoor side and an indoor side, a motor 1 disposed in the fresh air duct 5, and a valve device, a first air outlet, a second air outlet, and a third air outlet disposed in the outdoor fresh air channel 6. The third air outlet is connected to the fresh air duct 5, and the ventilation directions of the first air outlet and the second air outlet are different. Specifically, the air conditioner has an indoor side and an outdoor side, and the air conditioner has a unidirectional fresh air system. The indoor side portion of the unidirectional fresh air system has a fresh air fan, and the fresh air fan has a motor 1; the outdoor side portion of the unidirectional fresh air system has an outdoor fresh air channel 6, and the outdoor fresh air channel 6 has a valve device (such as a rotatable valve) and... An outdoor air vent; the outdoor air vent includes: a first air vent, a second air vent, and a third air vent, the third air vent being connected to the indoor side portion of the unidirectional fresh air system; the first air vent and the second air vent have different ventilation directions, such as the first air vent and the second air vent being distributed on both sides of the outdoor heat exchanger on the outdoor side, specifically, the first air vent being located above the outdoor heat exchanger on the outdoor side and the second air vent being located below the outdoor heat exchanger; when the valve device is in a preset first position, the third air vent is connected to the second air vent; when the valve device is in a preset second position, the third air vent is connected to the first air vent; when the valve device is in a preset third position, the third air vent is simultaneously connected to both the first air vent and the second air vent; Figure 9 A schematic diagram of the structure of a fresh air conditioner. (See diagram below.) Figure 9 As shown, the fresh air air conditioner has an indoor unit and an outdoor unit. In the solution of this invention, the indoor side of the air conditioner mainly consists of a heat exchanger system, a unidirectional fresh air system, a main control system, and a structural system, including the unidirectional fresh air system. Figure 15 This is an exploded diagram of a unidirectional fresh air system. Figure 15 As shown, the unidirectional fresh air system consists of a motor 1, an axial fan blade 2, a fresh air inlet 3, a fresh air outlet 4, a fresh air duct 5, and an outdoor fresh air channel 6. The outdoor fresh air channel 6 is connected to the first end of the fresh air duct 5, and the fresh air inlet 3 is connected to the second end of the fresh air duct 5. The axial fan blade 2 is mounted on the motor 1 and is positioned between the fresh air outlet 4 and the fresh air inlet 3. The axial fan blade 2 and the motor 1 together form the fresh air unit. Figure 10 This is a schematic diagram of the air circulation channel in the forward rotation mode of the fresh air unit motor 1. Figure 11 This is a schematic diagram of the air circulation channel in the reverse rotation mode of the fresh air unit motor 1. Figure 10 and Figure 11 As shown, the second end of the fresh air duct 5 is connected to the inlet end of the indoor fresh air unit, and the first end of the fresh air duct 5 is connected to the outlet end of the outdoor fresh air duct 6 (e.g., Figures 12 to 14The outdoor third air outlet C is shown. The fresh air duct 5 is equipped with heat-insulating sponge to prevent condensation, thus avoiding the formation of condensation and dripping onto the ground due to the large temperature difference between the air inside and outside the fresh air duct 5.

[0129] Figure 12 This is a schematic diagram of the airflow channel for a single outdoor vent (such as an outdoor updraft vent) of a fresh air unit. Figure 13 This is a schematic diagram of the air circulation channel for a single outdoor second air vent (such as an outdoor downwind vent). Figure 14 This is a schematic diagram of the airflow channel when the outdoor vent of the fresh air unit is fully open. In the solution of this invention, as... Figure 12 , Figure 13 and Figure 14 As shown, the outdoor fresh air duct 6 is installed on the outdoor unit and is equipped with an outdoor first air outlet (such as an outdoor upper air outlet) A, an outdoor second air outlet (such as an outdoor lower air outlet) B, and an outdoor third air outlet C. The outdoor third air outlet C is connected to the first end of the fresh air duct 5. The outdoor fresh air duct 6 is equipped with a rotatable valve. By adjusting the position of the rotatable valve, the mode can be switched between opening the outdoor first air outlet (such as an outdoor upper air outlet) A, opening the outdoor second air outlet (such as an outdoor lower air outlet) B, and fully opening the outdoor first air outlet (such as an outdoor upper air outlet) A and the outdoor second air outlet (such as an outdoor lower air outlet) B. Specifically, it can realize the switching of three channels.

[0130] like Figure 12 As shown, the air intake channel of the first outdoor air vent (such as the outdoor upwind vent) A is: the third outdoor air vent C is the first outdoor air vent (such as the outdoor upwind vent) A. Figure 12 The example shown is in reverse mode for motor 1; in forward mode for motor 1, the airflow direction is reversed. Figure 12 In the example shown, opening the first outdoor air vent (such as the outdoor upwind vent) A means: adjusting the rotatable valve to the second position S2 to open the first outdoor air vent (such as the outdoor upwind vent) A.

[0131] like Figure 13 As shown, the air intake channel of the second outdoor air vent (such as the outdoor downwind vent) B is: the third outdoor air vent C – the second outdoor air vent (such as the outdoor downwind vent) B; Figure 13 The example shown is in reverse mode for motor 1; in forward mode for motor 1, the airflow direction is reversed. Figure 13 In the example shown, opening the second outdoor vent (such as the downwind vent) B means: adjusting the rotatable valve to the first position S1 to open the second outdoor vent (such as the downwind vent) B.

[0132] like Figure 14As shown, the upper and lower inlet full air intake channels are: the third outdoor air outlet C, the first outdoor air outlet (such as the outdoor upper air outlet) A, and the second outdoor air outlet (such as the outdoor lower air outlet) B. Figure 14 The example shown is in reverse mode for motor 1; in forward mode for motor 1, the airflow direction is reversed. Figure 14 In the example shown, the outdoor air vents are fully open: Adjust the rotatable valve to the third position S3, and the first outdoor air vent (such as the outdoor upper air vent) A and the second outdoor air vent (such as the outdoor lower air vent) B are fully opened.

[0133] In the solution of this invention, for a unidirectional flow fresh air air conditioner, the outdoor air duct (such as outdoor fresh air channel 6) is equipped with upper and lower dual air outlets (i.e., outdoor first air outlet (such as outdoor upper air outlet) A and outdoor second air outlet (such as outdoor lower air outlet) B). Outdoor first air outlet (such as outdoor upper air outlet) A is located at the upper end of the outdoor heat exchanger, and lower air outlet is located at the lower end of the outdoor heat exchanger. A rotatable valve is installed in the outdoor air duct. By adjusting the position of the rotatable valve, the mode switching of opening only outdoor first air outlet (such as outdoor upper air outlet) A, opening only outdoor second air outlet (such as outdoor lower air outlet) B, and fully opening outdoor first air outlet (such as outdoor upper air outlet) A and outdoor second air outlet (such as outdoor lower air outlet) B can be achieved. Specifically, the optimal solution is selected by the control logic. For details, please refer to [reference needed]. Figure 7 and Figure 8 The example shown.

[0134] In the solution of the present invention, such as Figure 6 As shown, the control device of the air conditioner includes: an acquisition unit 102 and a control unit 104.

[0135] The acquisition unit 102 is configured to acquire the outdoor ambient temperature (e.g., outdoor ambient temperature T1) and the indoor ambient temperature (e.g., indoor ambient temperature T2) of the air conditioner when the air conditioner is operating in the current operating mode. The specific functions and processing of the acquisition unit 102 are described in step S110.

[0136] The control unit 104 is configured to, in the current operating mode of the air conditioner, control the rotation direction and speed of the motor 1 based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner, and control the position of the valve device to adjust the airflow direction of the unidirectional fresh air system. The specific functions and processing of this control unit 104 are described in step S120.

[0137] The rotation direction of the motor 1 includes: the motor 1 rotating in a preset first direction or the motor 1 rotating in a preset second direction; the preset first direction and the preset second direction are opposite to each other; when the motor 1 rotates in the preset first direction, the airflow direction of the unidirectional fresh air system is: the airflow direction from the outdoor air vent of the air conditioner to the indoor air vent of the air conditioner; when the motor 1 rotates in the preset second direction, the airflow direction of the unidirectional fresh air system is: the airflow direction from the indoor air vent of the air conditioner to the outdoor air vent of the air conditioner; the position of the valve device includes any of the following positions: a preset first position, a preset second position, and a preset third position.

[0138] In the solution of this invention, for a unidirectional flow fresh air air conditioner, different positions of the outdoor air vents are set to monitor the indoor and outdoor air temperatures in real time. The main control system determines whether the temperature difference between the indoor and outdoor air reaches the dew point temperature difference condition, and then adjusts the airflow direction of the fresh air unit. By controlling the load of the fresh air unit, different flow directions of fresh air for cooling or heating are achieved, such as adjusting the flow from outdoor air to indoor air to indoor air exhaust to outdoor air, reducing the risk of condensation in the air conditioner and solving the problem of fresh air condensation in cooling or heating modes. At the same time, in the reverse rotation mode of motor 1, the low-temperature or high-temperature indoor gas is led out to the outdoor heat exchanger for heat recovery, increasing heat exchange efficiency and achieving better cooling or heating effect of the whole unit. This also solves the problem that the fresh air air conditioner cannot start when there is a large temperature difference between indoor and outdoor air and condensation is likely, achieving the effect of running the fresh air unit around the clock.

[0139] Specifically, the motor 1 rotates in a preset first direction, including: the motor 1 rotates forward; the motor 1 rotates in a preset second direction, including: the motor 1 rotates in a preset second direction; that is, the rotation direction of the motor 1 includes: the motor 1 rotates forward, or the motor 1 rotates in reverse; wherein, when the motor 1 rotates forward, the airflow direction of the unidirectional fresh air system is: the airflow direction from the outdoor air vent of the air conditioner to the indoor air vent of the air conditioner; when the motor 1 rotates in reverse, the airflow direction of the unidirectional fresh air system is: the airflow direction from the indoor air vent of the air conditioner to the outdoor air vent of the air conditioner.

[0140] exist Figures 12 to 14 In the example shown, "motor 1 rotating forward" means that when the fresh air unit motor 1 starts rotating forward, the air circulation channel draws in fresh outdoor air through the outdoor side vent and exhausts indoor air through the indoor side vent, thus creating air exchange. For details, please refer to [link / reference needed]. Figure 10 The example shown. In Figures 12 to 14In the example shown, "motor 1 reversing" means that the fresh air unit motor 1 starts in reverse, and the air circulation channel draws in air from the indoor side vents and exhausts air from the outdoor side vents. This creates a slight negative pressure zone indoors, allowing fresh outdoor air to be drawn in through gaps in doors and windows, thus exchanging air. For more details, please refer to [link / reference needed]. Figure 11 The example shown.

[0141] In the solution of this invention, the location of the outdoor air vent is set at different positions to form any one of the following channels: a single outdoor first air vent (such as an outdoor upper air vent) A air inlet channel, a single outdoor second air vent (such as an outdoor lower air vent) B air inlet channel, or a full air inlet channel with both upper and lower inlets. In the reverse rotation mode of motor 1, the outdoor heat exchanger recovers and utilizes heat by exchanging heat with the drawn indoor air, increasing the heat exchange efficiency of the outdoor heat exchanger and solving the problem of energy loss when indoor air is exhausted outdoors by the fresh air air conditioner, thus reducing energy loss. Specifically, in the air conditioner's cooling mode, the indoor low-temperature gas exchanges heat with the outdoor high-temperature gas; in the air conditioner's heating mode, the indoor high-temperature gas exchanges heat with the outdoor low-temperature gas.

[0142] In some implementations, the current operating mode of the air conditioner is the cooling mode.

[0143] The control unit 104, when the current operating mode of the air conditioner is the cooling mode, controls the rotation direction of the motor 1, controls the speed of the motor 1, and controls the position of the valve device based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner, including:

[0144] The control unit 104 is further configured to determine whether the outdoor ambient temperature of the air conditioner is greater than a preset first cooling temperature threshold when the current operating mode of the air conditioner is the air conditioner's cooling mode; wherein the preset first cooling temperature threshold is, for example, 45°C. The specific functions and processing of the control unit 104 are further described in step S210.

[0145] The control unit 104 is further configured to, when the current operating mode of the air conditioner is the cooling mode, if it is determined that the outdoor ambient temperature of the air conditioner is greater than a preset first cooling temperature threshold, control the motor 1 to rotate in a preset second direction, control the speed of the motor 1 to a preset high fan speed, and control the position of the valve device to a preset third position. The specific functions and processing of this control unit 104 are further described in step S220.

[0146] The control unit 104 is further configured to, when the current operating mode of the air conditioner is the cooling mode, if it is determined that the outdoor ambient temperature of the air conditioner is less than or equal to a preset first cooling temperature threshold, control the rotation direction of the motor 1, control the speed of the motor 1, and control the position of the valve device based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner. The specific functions and processing of this control unit 104 are further described in step S230.

[0147] In the solution of the present invention, the air conditioner is in cooling operation, the fresh air unit is turned on, the air conditioner detects the outdoor ambient temperature T1 and the indoor ambient temperature T2, and the difference between the outdoor ambient temperature and the indoor ambient temperature is the indoor-outdoor temperature difference ΔT, which is determined by the control logic of the fresh air air conditioner in cooling mode. Figure 7 This is a schematic diagram of the control flow of a fresh air conditioner in cooling mode. Figure 7 As shown, the control process of a fresh air conditioner in cooling mode includes:

[0148] Step 11: First, determine whether the outdoor ambient temperature T1 is greater than 45℃. If yes, proceed to step 12; otherwise, proceed to step 13.

[0149] Step 12: If the outdoor ambient temperature T1 > 45℃, then motor 1 will reverse, the outdoor air vents will be fully opened, and the speed of motor 1 will be adjusted to the high fan speed.

[0150] Step 13: If the outdoor ambient temperature T1 ≤ 45℃, proceed to the next judgment condition, that is, determine whether the indoor and outdoor temperature difference ΔT > 13℃ is satisfied.

[0151] In the solution of this invention, in cooling mode, when the outdoor ambient temperature T1 > 45°C, the temperature is too high. When the indoor fresh air outlet is close to the air conditioner outlet, the hot air easily mixes with the cold air blown out by the air conditioner, causing the air conditioner to blow hot air while cooling, and easily causing condensation on the surface of the air conditioner outlet. At this time, the fan (such as motor 1) is adjusted to reverse mode to exhaust air to the outside. Outdoor fresh air is introduced through gaps in doors and windows, away from the air conditioner outlet, and has a large air intake area and low air intake speed, which is less likely to cause poor comfort. At the same time, the air blown out at the outdoor heat exchanger is low-temperature gas, which can further cool the outdoor heat exchanger, recover air energy, and increase the heat exchange efficiency of the air conditioner at high temperatures.

[0152] In some embodiments, the control unit 104, when the current operating mode of the air conditioner is the cooling mode, and when it is determined that the outdoor ambient temperature of the air conditioner is less than or equal to a preset first cooling temperature threshold, controls the rotation direction of the motor 1, controls the speed of the motor 1, and controls the position of the valve device based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner, including:

[0153] The control unit 104 is further configured to, when the current operating mode of the air conditioner is the cooling mode, and when it is determined that the outdoor ambient temperature of the air conditioner is less than or equal to a preset first cooling temperature threshold, determine the difference between the outdoor ambient temperature of the air conditioner and the indoor ambient temperature of the air conditioner, and record it as the indoor-outdoor temperature difference (e.g., indoor-outdoor temperature difference ΔT). The specific functions and processing of this control unit 104 are further described in step S310.

[0154] The control unit 104 is further configured to, when the current operating mode of the air conditioner is the cooling mode, and when the outdoor ambient temperature of the air conditioner is determined to be less than or equal to a preset first cooling temperature threshold, determine whether the indoor-outdoor temperature difference of the air conditioner is greater than a preset second cooling temperature threshold; wherein, the preset second cooling temperature threshold is less than the preset first cooling temperature threshold, and the preset second cooling temperature threshold is, for example, 13°C. The specific functions and processing of this control unit 104 are further described in step S320.

[0155] The control unit 104 is further configured to, when the current operating mode of the air conditioner is the cooling mode, and when the outdoor ambient temperature of the air conditioner is determined to be less than or equal to a preset first cooling temperature threshold, if the indoor-outdoor temperature difference of the air conditioner is determined to be greater than a preset second cooling temperature threshold, control the motor 1 to rotate in a preset second direction, control the speed of the motor 1 to a preset high fan speed, and control the position of the valve device to a preset third position. The specific functions and processing of this control unit 104 are further described in step S330.

[0156] The control unit 104 is further configured to, when the current operating mode of the air conditioner is the cooling mode, and when the outdoor ambient temperature of the air conditioner is determined to be less than or equal to a preset first cooling temperature threshold, and when the indoor-outdoor temperature difference of the air conditioner is determined to be less than or equal to a preset second cooling temperature threshold, control the motor 1 to rotate in a preset first direction, and control the speed of the motor 1 according to the outdoor ambient temperature of the air conditioner, and control the position of the valve device. The specific functions and processing of this control unit 104 are further described in step S340.

[0157] Specifically, such as Figure 7 As shown, the control process of a fresh air conditioner in cooling mode also includes:

[0158] In step 13, if the outdoor ambient temperature T1 ≤ 45℃, then determine whether the indoor-outdoor temperature difference ΔT > 13℃ is satisfied: if yes, proceed to step 14; otherwise, proceed to step 15.

[0159] Step 14: If the outdoor ambient temperature T1≤45℃ and the indoor-outdoor temperature difference ΔT>13℃, it is determined that condensation is likely to occur. To avoid condensation in the indoor unit, motor 1 is reversed, air is exhausted from the indoor unit to the outdoor unit, the outdoor air vent is fully opened, and the speed of motor 1 is adjusted to the high fan speed.

[0160] Step 15: If the outdoor ambient temperature T1≤45℃ and the indoor-outdoor temperature difference ΔT≤13℃, it is determined that condensation is unlikely to occur. Motor 1 rotates forward, and air is drawn into the room from the outside. The speed of motor 1 and the mode of the outdoor air vent are determined and set in the following ways, specifically by referring to steps 16, 17 and 18.

[0161] In the solution of the present invention, in the cooling mode, when the temperature difference between indoor air temperature and outdoor air temperature is large, the control of the fresh air flow direction under different environments is realized by controlling the load of the fresh air unit. For example, the fresh air is adjusted from being introduced into the room to being exhausted to the outside, which solves the problem of poor comfort caused by the introduction of fresh air by the fresh air air conditioner and realizes comfortable fresh air.

[0162] In some embodiments, the control unit 104, when the current operating mode of the air conditioner is the cooling mode, determines that the outdoor ambient temperature of the air conditioner is less than or equal to a preset first cooling temperature threshold, determines that the indoor and outdoor temperature difference of the air conditioner is less than or equal to a preset second cooling temperature threshold, and controls the motor 1 to rotate in a preset first direction, controls the speed of the motor 1 according to the outdoor ambient temperature of the air conditioner, and controls the position of the valve device, including any of the following cooling control scenarios:

[0163] The first cooling control scenario: The control unit 104 is further configured to control the speed of the motor 1 to a preset low fan speed and control the position of the valve device to a preset first position if the outdoor ambient temperature of the air conditioner is less than or equal to a preset first cooling temperature threshold and greater than a preset third cooling temperature threshold; wherein, the preset third cooling temperature threshold is greater than a preset second cooling temperature threshold, and the preset third cooling temperature threshold is, for example, 35°C.

[0164] The second cooling control scenario: The control unit 104 is further configured to control the speed of the motor 1 to a preset medium fan speed and control the position of the valve device to a preset third position if the outdoor ambient temperature of the air conditioner is less than or equal to a preset third cooling temperature threshold and greater than a preset fourth cooling temperature threshold; wherein, the preset fourth cooling temperature threshold is greater than the preset second cooling temperature threshold, and the preset fourth cooling temperature threshold is, for example, 30°C.

[0165] The third cooling control scenario: The control unit 104 is further configured to, if the outdoor ambient temperature of the air conditioner is less than or equal to a preset fourth cooling temperature threshold, control the speed of the motor 1 to a preset high fan speed and control the position of the valve device to a preset third position. Specifically, as shown... Figure 7 As shown, the control process of a fresh air conditioner in cooling mode also includes:

[0166] Step 16: When the outdoor ambient temperature T1 ≤ 30℃, the outdoor air vents are fully open and motor 1 is running at high speed.

[0167] In step 16, the outdoor ambient temperature T1 is ≤ 30°C. The difference between the outdoor ambient temperature T1 and the indoor ambient temperature is small and close to the human comfort temperature of 27°C, so it is unlikely to cause poor human comfort. Therefore, the outdoor air vents are fully open, the first outdoor air vent (such as the outdoor upper air vent) A and the second outdoor air vent (such as the outdoor lower air vent) B are fully open, and the motor 1 is running at high speed to increase the air exchange efficiency in the room.

[0168] Step 17: When 30℃ < outdoor ambient temperature T1 ≤ 35℃, the outdoor vents are fully open, and motor 1 operates at the medium wind speed. In step 17, the air in this temperature range is relatively hot, and it is not advisable to introduce a large volume of outdoor fresh air to avoid affecting the comfort experience. Therefore, motor 1 is selected to operate at the medium wind speed.

[0169] Step 18: When 35℃ < outdoor ambient temperature T1 ≤ 45℃, open only the second outdoor vent on the lower outdoor side (e.g., the lower outdoor vent) B, and run motor 1 at low speed. In Step 18, the air in this temperature range is overheated, so it is necessary to reduce the high load caused by the introduction of high-temperature outdoor air and the impact on comfort. At the same time, the outdoor heat exchanger is in a heating state, and the hot air is lighter and rises, causing the upper vent to be hotter than the lower vent. Therefore, it is selected to open only the second outdoor vent on the lower outdoor side (e.g., the lower outdoor vent) B to reduce the high load caused by the introduction of high-temperature outdoor air and improve comfort.

[0170] In some implementations, the current operating mode of the air conditioner is the heating mode.

[0171] The control unit 104, when the current operating mode of the air conditioner is the heating mode, controls the rotation direction of the motor 1, controls the speed of the motor 1, and controls the position of the valve device based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner, including:

[0172] The control unit 104 is further configured to determine whether the outdoor ambient temperature of the air conditioner is lower than a preset first heating temperature threshold when the current operating mode of the air conditioner is the heating mode; wherein the preset first heating temperature threshold is, for example, -5℃. The specific functions and processing of the control unit 104 are further described in step S410.

[0173] The control unit 104 is further configured to, when the current operating mode of the air conditioner is the heating mode, if it is determined that the outdoor ambient temperature of the air conditioner is less than a preset first heating temperature threshold, control the motor 1 to rotate in a preset second direction, control the speed of the motor 1 to a preset high fan speed, and control the position of the valve device to a preset third position. The specific functions and processing of this control unit 104 are further described in step S420.

[0174] The control unit 104 is further configured to, when the current operating mode of the air conditioner is the heating mode, if it is determined that the outdoor ambient temperature of the air conditioner is greater than or equal to a preset first heating temperature threshold, control the rotation direction of the motor 1, control the speed of the motor 1, and control the position of the valve device based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner. The specific functions and processing of this control unit 104 are further described in step S430.

[0175] In the solution of the present invention, the air conditioner is in heating mode and the fresh air unit is turned on. The air conditioner detects the outdoor ambient temperature T1 and the indoor ambient temperature T2. The difference between the outdoor ambient temperature and the indoor ambient temperature is the indoor-outdoor temperature difference ΔT, which is determined by the control logic of the fresh air air conditioner in heating mode. Figure 8 This is a schematic diagram of the control flow of a fresh air conditioner in heating mode. (Example) Figure 8 As shown, the control process of a fresh air conditioner in heating mode includes:

[0176] Step 21: First, determine whether the outdoor ambient temperature T1 < -5℃ is met. If yes, proceed to step 22; otherwise, proceed to step 23.

[0177] Step 22: If the outdoor ambient temperature T1 < -5℃, then motor 1 will reverse, the outdoor air vents will be fully opened, and the speed of motor 1 will be adjusted to the high setting.

[0178] Step 23: If the outdoor ambient temperature T1 ≥ -5℃, proceed to the next judgment condition, that is, determine whether the indoor and outdoor temperature difference ΔT > 10℃ is satisfied.

[0179] In the solution of this invention, in heating mode, when the outdoor ambient temperature T1 < -5°C, and the indoor ambient temperature T1 is generally above 10°C, the indoor-outdoor temperature difference ΔT is large. This can cause condensation inside the fresh air component and at the air outlet due to heat exchange, making it unsuitable for direct introduction into the room. Therefore, a reverse rotation mode for motor 1 is adopted to avoid condensation inside the fresh air component and at the air outlet due to heat exchange, allowing direct introduction into the room. Simultaneously, the air blown out from the outdoor heat exchanger is high-temperature gas, allowing the outdoor heat exchanger to recover air energy, reduce the load, and increase the heat exchange efficiency of the air conditioner at high temperatures.

[0180] In some embodiments, the control unit 104, when the current operating mode of the air conditioner is the heating mode, and when it is determined that the outdoor ambient temperature of the air conditioner is less than or equal to a preset first heating temperature threshold, controls the rotation direction of the motor 1, controls the speed of the motor 1, and controls the position of the valve device based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner, including:

[0181] The control unit 104 is further configured to, when the current operating mode of the air conditioner is the heating mode, and when it is determined that the outdoor ambient temperature of the air conditioner is greater than or equal to a preset first heating temperature threshold, determine the difference between the outdoor ambient temperature of the air conditioner and the indoor ambient temperature of the air conditioner, and record it as the indoor-outdoor temperature difference (e.g., indoor-outdoor temperature difference ΔT). The specific functions and processing of this control unit 104 are further described in step S510.

[0182] The control unit 104 is further configured to, when the current operating mode of the air conditioner is the air conditioner's heating mode, and when it is determined that the outdoor ambient temperature of the air conditioner is greater than or equal to a preset first heating temperature threshold, determine whether the indoor-outdoor temperature difference of the air conditioner is greater than a preset second heating temperature threshold; wherein, the preset second heating temperature threshold is greater than the preset first heating temperature threshold, and the preset second heating temperature threshold is, for example, 10°C. The specific functions and processing of this control unit 104 are further described in step S520.

[0183] The control unit 104 is further configured to, when the current operating mode of the air conditioner is the heating mode, and when the outdoor ambient temperature of the air conditioner is determined to be greater than or equal to a preset first heating temperature threshold, and when the indoor-outdoor temperature difference of the air conditioner is determined to be greater than a preset second heating temperature threshold, control the motor 1 to rotate in a preset second direction, control the speed of the motor 1 to a preset high fan speed, and control the position of the valve device to a preset third position. The specific functions and processing of this control unit 104 are further described in step S530.

[0184] The control unit 104 is further configured to, when the current operating mode of the air conditioner is the air conditioner's heating mode, and when the outdoor ambient temperature of the air conditioner is determined to be greater than or equal to a preset first heating temperature threshold, and when the indoor-outdoor temperature difference of the air conditioner is determined to be less than or equal to a preset second heating temperature threshold, control the motor 1 to rotate in a preset first direction, and control the speed of the motor 1 according to the outdoor ambient temperature of the air conditioner, and control the position of the valve device. The specific functions and processing of this control unit 104 are further described in step S540. Specifically, as... Figure 8 As shown, the control process of the fresh air conditioner in heating mode also includes: in step 23, if the outdoor ambient temperature T1 ≥ -5℃, then determine whether the indoor and outdoor temperature difference ΔT > 10℃ is satisfied: if yes, then execute step 24, otherwise execute step 25.

[0185] Step 24: If the outdoor ambient temperature T1 ≥ -5℃, and the indoor-outdoor temperature difference ΔT > 10℃, it is determined that condensation is likely to occur. To avoid condensation in the indoor unit, motor 1 is reversed, air is exhausted from the indoor unit to the outdoor unit, the outdoor air vent is fully opened, and the speed of motor 1 is adjusted to the high fan speed.

[0186] Step 25: If the outdoor ambient temperature T1 ≥ -5℃ and the indoor-outdoor temperature difference ΔT ≤ 10℃, it is determined that condensation is unlikely to occur. Motor 1 rotates forward, and air is drawn into the room from the outside. The speed of motor 1 and the mode of the outdoor air vent are determined and set in the following ways, specifically in steps 26, 27 and 28.

[0187] In the solution of the present invention, in the heating mode, when the temperature difference between indoor air temperature and outdoor air temperature is large, the control of the fresh air flow direction under different environments is realized by controlling the load of the fresh air unit. For example, the fresh air is adjusted from being introduced into the room to being exhausted to the outside, which solves the problem of poor comfort caused by the introduction of fresh air by the fresh air air conditioner and realizes comfortable fresh air.

[0188] In some embodiments, the control unit 104, when the current operating mode of the air conditioner is the air conditioner's heating mode, determines that the outdoor ambient temperature of the air conditioner is less than or equal to a preset first heating temperature threshold, determines that the indoor and outdoor temperature difference of the air conditioner is greater than or equal to a preset second heating temperature threshold, and controls the motor 1 to rotate in a preset first direction, controls the speed of the motor 1 according to the outdoor ambient temperature of the air conditioner, and controls the position of the valve device, including any of the following heating control scenarios:

[0189] The first heating control scenario: The control unit 104 is further configured to control the speed of the motor 1 to a preset low fan speed and control the position of the valve device to a preset second position if the outdoor ambient temperature of the air conditioner is greater than or equal to a preset first heating temperature threshold and less than a preset third heating temperature threshold; wherein, the preset third heating temperature threshold is less than the preset second heating temperature threshold, and the preset third heating temperature threshold is, for example, 5°C.

[0190] The second heating control scenario: The control unit 104 is further configured to control the speed of the motor 1 to a preset medium fan speed and control the position of the valve device to a preset third position if the outdoor ambient temperature of the air conditioner is greater than or equal to a preset third heating temperature threshold and less than a preset fourth heating temperature threshold; wherein, the preset fourth heating temperature threshold is greater than the preset second heating temperature threshold, and the preset fourth heating temperature threshold is, for example, 15°C.

[0191] The third heating control scenario: The control unit 104 is further configured to, if the outdoor ambient temperature of the air conditioner is greater than or equal to a preset fourth heating temperature threshold, control the speed of the motor 1 to a preset high fan speed and control the position of the valve device to a preset third position. Specifically, as shown... Figure 8 As shown, the control process of a fresh air conditioner in heating mode also includes:

[0192] Step 26: When -5℃ ≤ outdoor ambient temperature T1 < 5℃, only the first outdoor vent on the upper outdoor side (e.g., the upper outdoor vent) A is opened, and motor 1 operates at low speed. In step 26, the air in this temperature range is too cold, so it is necessary to reduce the high load caused by the introduction of low-temperature outdoor air and the impact on comfort. At the same time, the outdoor heat exchanger is in cooling mode, and the cold air is heavier and sinks. This causes the temperature at the lower vent to be lower than that at the upper vent. Therefore, only the first outdoor vent on the upper outdoor side (e.g., the upper outdoor vent) A is opened to reduce the high load caused by the introduction of low-temperature outdoor air and improve comfort.

[0193] Step 27: When 5℃ ≤ outdoor ambient temperature T1 < 15℃, the outdoor vents are fully open, and motor 1 operates at the medium wind speed. In step 27, the air in this temperature range is relatively cold, and it is not advisable to introduce a large volume of outdoor fresh air to avoid affecting the comfort experience. Therefore, motor 1 is selected to operate at the medium wind speed to improve the comfort experience.

[0194] Step 28: When 15℃ ≤ outdoor ambient temperature T1, the outdoor air vents are fully open, and motor 1 operates at high speed. In step 28, the difference between the outdoor air temperature and the indoor ambient temperature in this temperature range is small, which is unlikely to cause poor human comfort. Therefore, the first outdoor air vent (e.g., outdoor upper vent) A and the second outdoor air vent (e.g., outdoor lower vent) B are fully open, and motor 1 operates at high speed to increase the ventilation efficiency in the room.

[0195] The solution of this invention is for a unidirectional flow fresh air air conditioner. By controlling the load of the fresh air unit, different flow directions of the fresh air for cooling or heating are achieved, thereby achieving the purpose of preventing condensation in the fresh air unit. At the same time, in the reverse mode of motor 1, the indoor low-temperature or high-temperature gas is led out to the outdoor heat exchanger for heat recovery, increasing heat exchange efficiency and achieving better cooling or heating effect of the whole unit.

[0196] Since the processing and functions implemented by the device in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0197] According to an embodiment of the present invention, an air conditioner corresponding to a control device for an air conditioner is also provided. This air conditioner may include the control device for an air conditioner described above.

[0198] Since the processing and functions implemented by the air conditioner in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned devices, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0199] According to an embodiment of the present invention, a computer program product corresponding to an air conditioner is also provided, comprising a computer program that, when executed by a processor, implements the steps of the control method for the air conditioner described above.

[0200] Since the processing and functions implemented by the product in this embodiment are basically the same as those of the aforementioned air conditioner embodiments, principles and examples, any details not covered in this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0201] According to an embodiment of the present invention, a storage medium corresponding to a control method for an air conditioner is also provided, the storage medium including a stored program, wherein, when the program is executed, the device where the storage medium is located executes the steps of the control method for the air conditioner described above.

[0202] Since the processing and functions implemented by the storage medium in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0203] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous methods can be freely combined and superimposed.

[0204] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A control method of an air conditioner, characterized by, The air conditioner has a unidirectional fresh air system; the unidirectional fresh air system includes: a fresh air duct (5) located between an outdoor fresh air channel (6) on the outdoor side and an indoor side, a motor (1) located in the fresh air duct (5), and a valve device, a first air outlet, a second air outlet, and a third air outlet located in the outdoor fresh air channel (6). The outdoor fresh air channel (6) has a first air outlet and a second air outlet, and the third air outlet is connected to the fresh air duct (5). The ventilation directions of the first air outlet and the second air outlet are different. When the valve device is in a preset first position, the third air outlet is connected to the second air outlet. When the valve device is in a preset second position, the third air outlet is connected to the first air outlet. When the valve device is in a preset third position, the third air outlet is connected to both the first air outlet and the second air outlet. The control method of the air conditioner includes: When the air conditioner is operating in the current operating mode, the outdoor ambient temperature of the air conditioner is obtained, and the indoor ambient temperature of the air conditioner is obtained. In the current operating mode of the air conditioner, based on the outdoor ambient temperature of the air conditioner and in combination with the indoor ambient temperature of the air conditioner, the rotation direction of the motor (1) is controlled, the speed of the motor (1) is controlled, and the position of the valve device is controlled to adjust the airflow direction of the unidirectional fresh air system and realize the control of the fresh air unit load; by controlling the fresh air unit load, different flow directions of cooling or heating fresh air are realized to meet the user's need for switching channel ventilation. The rotation direction of the motor (1) includes: the motor (1) rotating in a preset first direction, or the motor (1) rotating in a preset second direction; the preset first direction and the preset second direction are opposite to each other; when the motor (1) rotates in the preset first direction, the airflow direction of the unidirectional fresh air system is: the airflow direction from the outdoor air vent of the air conditioner to the indoor air vent of the air conditioner; when the motor (1) rotates in the preset second direction, the airflow direction of the unidirectional fresh air system is: the airflow direction from the indoor air vent of the air conditioner to the outdoor air vent of the air conditioner. The valve device may be located in any of the following positions: a preset first position, a preset second position, and a preset third position.

2. The control method of the air conditioner according to claim 1, characterized by, The current operating mode of the air conditioner is the cooling mode. When the current operating mode of the air conditioner is the cooling mode, the rotation direction of the motor (1), the speed of the motor (1), and the position of the valve device are controlled according to the outdoor ambient temperature and the indoor ambient temperature of the air conditioner, including: Determine whether the outdoor ambient temperature of the air conditioner is greater than a preset first cooling temperature threshold. If it is determined that the outdoor ambient temperature of the air conditioner is greater than the preset first cooling temperature threshold, then the motor (1) is controlled to rotate in the preset second direction, the speed of the motor (1) is controlled to be the preset high fan speed, and the position of the valve device is controlled to be the preset third position. If the outdoor ambient temperature of the air conditioner is determined to be less than or equal to the preset first cooling temperature threshold, then the rotation direction of the motor (1), the speed of the motor (1), and the position of the valve device are controlled according to the outdoor ambient temperature and the indoor ambient temperature of the air conditioner.

3. The control method of the air conditioner according to claim 2, characterized by, Based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner, the rotation direction of the motor (1), the speed of the motor (1), and the position of the valve device are controlled, including: The difference between the outdoor ambient temperature and the indoor ambient temperature of the air conditioner is determined and denoted as the indoor-outdoor temperature difference of the air conditioner. Determine whether the indoor and outdoor temperature difference of the air conditioner is greater than a preset second cooling temperature threshold; wherein the preset second cooling temperature threshold is less than a preset first cooling temperature threshold; If it is determined that the indoor and outdoor temperature difference of the air conditioner is greater than the preset second cooling temperature threshold, then the motor (1) is controlled to rotate in the preset second direction, the speed of the motor (1) is controlled to be the preset high fan speed, and the position of the valve device is controlled to be the preset third position. If it is determined that the indoor and outdoor temperature difference of the air conditioner is less than or equal to the preset second cooling temperature threshold, the motor (1) is controlled to rotate in the preset first direction, and the speed of the motor (1) is controlled according to the outdoor ambient temperature of the air conditioner, and the position of the valve device is controlled.

4. The control method of the air conditioner according to claim 3, characterized by, Based on the outdoor ambient temperature of the air conditioner, the rotational speed of the motor (1) is controlled, and the position of the valve device is controlled, including: If the outdoor ambient temperature of the air conditioner is less than or equal to the preset first cooling temperature threshold and greater than the preset third cooling temperature threshold, then the speed of the motor (1) is controlled to the preset low fan speed, and the position of the valve device is controlled to the preset first position; wherein the preset third cooling temperature threshold is greater than the preset second cooling temperature threshold. If the outdoor ambient temperature of the air conditioner is less than or equal to the preset third cooling temperature threshold and greater than the preset fourth cooling temperature threshold, then the speed of the motor (1) is controlled to the preset medium wind speed, and the position of the valve device is controlled to the preset third position; wherein the preset fourth cooling temperature threshold is greater than the preset second cooling temperature threshold. If the outdoor ambient temperature of the air conditioner is less than or equal to the preset fourth cooling temperature threshold, the speed of the motor (1) is controlled to the preset high fan speed, and the position of the valve device is controlled to the preset third position.

5. The control method of the air conditioner according to claim 1, wherein The current operating mode of the air conditioner is the heating mode. When the current operating mode of the air conditioner is the heating mode, the rotation direction of the motor (1), the speed of the motor (1), and the position of the valve device are controlled according to the outdoor ambient temperature and the indoor ambient temperature of the air conditioner, including: Determine whether the outdoor ambient temperature of the air conditioner is lower than a preset first heating temperature threshold. If it is determined that the outdoor ambient temperature of the air conditioner is less than the preset first heating temperature threshold, then the motor (1) is controlled to rotate in the preset second direction, the speed of the motor (1) is controlled to be the preset high fan speed, and the position of the valve device is controlled to be the preset third position. If the outdoor ambient temperature of the air conditioner is determined to be greater than or equal to the preset first heating temperature threshold, then the rotation direction of the motor (1), the speed of the motor (1), and the position of the valve device are controlled according to the outdoor ambient temperature and the indoor ambient temperature of the air conditioner.

6. The control method of the air conditioner according to claim 5, characterized by, Based on the outdoor ambient temperature and the indoor ambient temperature of the air conditioner, the rotation direction of the motor (1), the speed of the motor (1), and the position of the valve device are controlled, including: The difference between the outdoor ambient temperature and the indoor ambient temperature of the air conditioner is determined and denoted as the indoor-outdoor temperature difference of the air conditioner. Determine whether the indoor and outdoor temperature difference of the air conditioner is greater than a preset second heating temperature threshold; wherein the preset second heating temperature threshold is greater than a preset first heating temperature threshold; If it is determined that the indoor and outdoor temperature difference of the air conditioner is greater than the preset second heating temperature threshold, then the motor (1) is controlled to rotate in the preset second direction, the speed of the motor (1) is controlled to be the preset high fan speed, and the position of the valve device is controlled to be the preset third position. If it is determined that the indoor and outdoor temperature difference of the air conditioner is less than or equal to the preset second heating temperature threshold, the motor (1) is controlled to rotate in the preset first direction, and the speed of the motor (1) is controlled according to the outdoor ambient temperature of the air conditioner, and the position of the valve device is controlled.

7. The control method of the air conditioner according to claim 6, characterized by, Based on the outdoor ambient temperature of the air conditioner, the rotational speed of the motor (1) is controlled, and the position of the valve device is controlled, including: If the outdoor ambient temperature of the air conditioner is greater than or equal to the preset first heating temperature threshold and less than the preset third heating temperature threshold, then the speed of the motor (1) is controlled to the preset low fan speed, and the position of the valve device is controlled to the preset second position; wherein the preset third heating temperature threshold is less than the preset second heating temperature threshold. If the outdoor ambient temperature of the air conditioner is greater than or equal to the preset third heating temperature threshold and less than the preset fourth heating temperature threshold, then the speed of the motor (1) is controlled to the preset medium wind speed, and the position of the valve device is controlled to the preset third position; wherein the preset fourth heating temperature threshold is greater than the preset second heating temperature threshold. If the outdoor ambient temperature of the air conditioner is greater than or equal to the preset fourth heating temperature threshold, the speed of the motor (1) is controlled to the preset high fan speed, and the position of the valve device is controlled to the preset third position.

8. A control device of an air conditioner for implementing control of the air conditioner by a control method of the air conditioner according to claim 1, characterized by The air conditioner has a unidirectional fresh air system; the unidirectional fresh air system includes: a fresh air duct (5) located between an outdoor fresh air channel (6) on the outdoor side and the indoor side, a motor (1) located in the fresh air duct (5), and a valve device, a first air outlet, a second air outlet, and a third air outlet located in the outdoor fresh air channel (6), the third air outlet being connected to the fresh air duct (5), and the first air outlet and the second air outlet having different ventilation directions; when the valve device is in a preset first position, the third air outlet is connected to the second air outlet; when the valve device is in a preset second position, the third air outlet is connected to the first air outlet; when the valve device is in a preset third position, the third air outlet is simultaneously connected to both the first air outlet and the second air outlet; the control device of the air conditioner includes: The acquisition unit is configured to acquire the outdoor ambient temperature of the air conditioner and the indoor ambient temperature of the air conditioner when the air conditioner is operating in the current operating mode. The control unit is configured to, in the current operating mode of the air conditioner, control the rotation direction of the motor (1), control the speed of the motor (1), and control the position of the valve device to adjust the airflow direction of the unidirectional fresh air system based on the outdoor ambient temperature of the air conditioner and in combination with the indoor ambient temperature of the air conditioner. The rotation direction of the motor (1) includes: the motor (1) rotating in a preset first direction, or the motor (1) rotating in a preset second direction; the preset first direction and the preset second direction are opposite to each other; when the motor (1) rotates in the preset first direction, the airflow direction of the unidirectional fresh air system is: the airflow direction from the outdoor air vent of the air conditioner to the indoor air vent of the air conditioner; when the motor (1) rotates in the preset second direction, the airflow direction of the unidirectional fresh air system is: the airflow direction from the indoor air vent of the air conditioner to the outdoor air vent of the air conditioner. The valve device may be located in any of the following positions: a preset first position, a preset second position, and a preset third position.

9. An air conditioner characterized by comprising: include: The control device for an air conditioner as described in claim 8.

10. A storage medium, characterized by The storage medium includes a stored program, wherein, when the program is executed, the device containing the storage medium is controlled to perform the control method of the air conditioner 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 the processor, it implements the steps of the control method for the air conditioner according to any one of claims 1 to 7.

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