Method for controlling fresh air equipment, fresh air equipment and storage medium

Abstract

The application discloses a control method of a fresh air equipment, the fresh air equipment and a storage medium. The method comprises the following steps: acquiring a preset threshold range associated with a current operation condition of the fresh air equipment; acquiring an environment temperature and / or an environment humidity; and controlling a fresh air proportion adjusting assembly to adjust the proportion of return air and fresh air according to the preset threshold range, the environment temperature and / or the environment humidity. The application saves the energy consumption of the fresh air equipment.

Description

Technical Field

[0001] This invention relates to the field of electrical control technology, and in particular to a control method for a fresh air system, the fresh air system itself, and a storage medium. Background Technology

[0002] As people's living standards improve, the requirements for indoor thermal environments are no longer limited to heating and cooling; emphasis is now placed on five-dimensional regulation of temperature, humidity, airflow, cleanliness, and freshness. The use of fresh air systems has risen to a level driven by health needs, placing higher demands on freshness and cleanliness. Fresh air systems are increasingly being used as an effective and important solution. However, existing fresh air systems cannot promptly provide users with the environmental conditions they urgently need. Summary of the Invention

[0003] The main objective of this invention is to provide a control method, a fresh air device, and a storage medium for a fresh air system, aiming to solve the problem that existing fresh air systems cannot provide users with the urgently needed environmental conditions in a timely manner.

[0004] To achieve the above objectives, the present invention provides a control method for a fresh air device, applied to a fresh air device, the fresh air device including a fresh air ratio adjustment component for adjusting the ratio of return air to fresh air in the air supplied to the room by the fresh air device, and the control method for the fresh air device including the following steps:

[0005] Obtain the preset threshold range associated with the current operating conditions of the fresh air system;

[0006] Obtain ambient temperature and / or ambient humidity;

[0007] The fresh air ratio adjustment component is controlled according to the preset threshold range, the ambient temperature and / or the ambient humidity to adjust the ratio of return air to fresh air.

[0008] In one embodiment, the preset threshold range includes a first preset range, and the step of controlling the fresh air ratio adjustment component to adjust the ratio of return air to fresh air based on the preset threshold range, the ambient temperature, and / or the ambient humidity includes:

[0009] When the ambient temperature and / or the ambient humidity are within a first preset range, the fresh air ratio adjustment component is controlled to reduce the proportion of fresh air.

[0010] In one embodiment, the preset threshold range includes a second preset range, and the step of controlling the fresh air ratio adjustment component to adjust the ratio of return air to fresh air based on the preset threshold range, the ambient temperature, and / or the ambient humidity includes:

[0011] When the ambient temperature and / or the ambient humidity are within a second preset range, obtain the air quality parameters;

[0012] Based on the air quality range in which the air quality parameters are located, the fresh air ratio adjustment component is controlled to adjust the ratio of return air to fresh air.

[0013] In one embodiment, the air quality range includes a first quality range and a second quality range, wherein the air quality corresponding to the first quality range is better than the air quality of the second quality range, and the step of controlling the fresh air ratio adjustment component to adjust the ratio of return air to fresh air according to the air quality range in which the air quality parameter is located includes:

[0014] When the air quality parameter is within the first quality range, the fresh air ratio adjustment component is controlled to reduce the proportion of fresh air.

[0015] When the air quality parameter is within the second quality range, the fresh air ratio adjustment component is controlled to increase the proportion of fresh air.

[0016] The air quality characterized by the first quality range is superior to the air quality characterized by the second quality range.

[0017] In one embodiment, the fresh air device includes a fresh air duct and an exhaust air duct. The fresh air ratio adjustment component includes a fresh air valve disposed in the fresh air duct for adjusting the fresh air volume, an exhaust air valve disposed in the exhaust air duct for adjusting the exhaust air volume, and a bypass ventilation valve disposed between the fresh air duct and the exhaust air duct for adjusting the return air volume entering the fresh air duct from the exhaust air duct. The step of controlling the fresh air ratio adjustment component to reduce the proportion of fresh air includes at least one of the following:

[0018] Increase the opening degree of the bypass ventilation valve;

[0019] Reduce the opening degree of the fresh air valve;

[0020] Reduce the opening degree of the exhaust valve.

[0021] In one embodiment, the step of controlling the fresh air ratio adjustment component to increase the proportion of fresh air includes at least one of the following:

[0022] Reduce the opening degree of the bypass ventilation valve;

[0023] Increase the opening degree of the fresh air valve;

[0024] Increase the opening degree of the exhaust valve.

[0025] In one embodiment, in cooling mode, the first preset range is: the ambient temperature is greater than a first temperature, or the ambient humidity is greater than a first humidity;

[0026] In cooling mode, the second preset range is: the ambient temperature is lower than the first temperature, and the ambient humidity is lower than the first humidity;

[0027] In heating mode, the first preset range is: the ambient temperature is less than the second temperature, or the ambient humidity is less than the second humidity;

[0028] In heating mode, the second preset range is: the ambient temperature is greater than the second temperature, and the ambient humidity is greater than the second humidity.

[0029] In one embodiment, the fresh air equipment further includes a compressor, an electronic expansion valve, a fresh air heat exchanger, a fresh air fan, and an exhaust fan. The fresh air heat exchanger is disposed within the fresh air duct and connected to the compressor. The fresh air fan is disposed within the fresh air duct. After the step of controlling the fresh air ratio adjustment component to adjust the ratio of return air to fresh air, the system further includes:

[0030] Obtain the set threshold range associated with the current operating condition of the fresh air device;

[0031] Obtain real-time ambient temperature and / or real-time ambient humidity;

[0032] Based on the set threshold range, the real-time ambient temperature and / or the real-time ambient humidity, control at least one of the following: the operating frequency of the compressor, the opening degree of the electronic expansion valve, the speed of the fresh air fan, and the speed of the exhaust fan.

[0033] In one embodiment, the set threshold range includes a first set range and a second set range. The step of controlling at least one of the following based on the set threshold range, the real-time ambient temperature and / or the real-time ambient humidity: the operating frequency of the compressor, the opening degree of the electronic expansion valve, the speed of the fresh air fan, and the speed of the exhaust fan.

[0034] When the real-time ambient temperature and / or the real-time ambient temperature is within a first set range, control the fresh air equipment to increase the operating frequency of the compressor, decrease the opening of the electronic expansion valve, increase the speed of the fresh air fan, and increase the speed of the exhaust fan, at least one of these actions.

[0035] When the real-time ambient temperature and / or the real-time ambient temperature is within a second set range, the fresh air equipment is controlled to reduce at least one of the following: reduce the operating frequency of the compressor, increase the opening of the electronic expansion valve, reduce the speed of the fresh air fan, and reduce the speed of the exhaust fan.

[0036] In one embodiment, the fresh air device includes a first heat exchange system and a second heat exchange system. The step of controlling at least one of the following according to the set threshold range, the real-time ambient temperature and / or the real-time ambient humidity: the operating frequency of the compressor, the opening degree of the electronic expansion valve, the rotational speed of the fresh air fan, and the rotational speed of the exhaust fan:

[0037] Determine the real-time ambient temperature and the real-time ambient humidity, and the third temperature and third humidity corresponding to the set threshold range, respectively;

[0038] Determine the temperature difference between the real-time ambient temperature and the third temperature, and / or determine the humidity difference between the real-time ambient humidity and the third humidity;

[0039] The target control parameters are determined based on the temperature difference and / or the humidity difference, and the target control parameters include at least one of the following: the operating frequency of the compressor, the opening degree of the electronic expansion valve, the speed of the fresh air fan, and the speed of the exhaust fan.

[0040] The operation of the first heat exchange system and / or the operation of the second heat exchange system are controlled according to the target control parameters.

[0041] In one embodiment, the first heat exchange system includes a first fresh air heat exchanger, and the second heat exchange system includes a second fresh air heat exchanger. The first and second fresh air heat exchangers are disposed within the fresh air duct and arranged sequentially along the airflow direction within the fresh air duct. The step of determining the target control parameter based on the temperature difference and / or the humidity difference includes:

[0042] Obtain the temperature of the first heat exchanger of the first fresh air heat exchanger and the temperature of the second heat exchanger of the second fresh air heat exchanger;

[0043] Determine the ratio between the temperatures of the first heat exchanger and the second heat exchanger;

[0044] When both the first fresh air heat exchanger and the second fresh air heat exchanger act as evaporators, and the ratio is greater than a preset ratio, and the temperature difference or the humidity difference is greater than the upper limit of the target value range, the target control parameters are determined to include controlling the first heat exchange system to increase the operating frequency of the compressor and decrease the opening of the electronic expansion valve, and controlling the fresh air equipment to increase the speed of the fresh air fan and the speed of the exhaust fan.

[0045] When both the first fresh air heat exchanger and the second fresh air heat exchanger act as evaporators, and the ratio is less than a preset ratio, and the temperature difference or the humidity difference is greater than the upper limit of the target value range, the target control parameters are determined to include controlling the second heat exchange system to increase the operating frequency of the compressor, decrease the opening of the electronic expansion valve, and controlling the fresh air equipment to increase the speed of the fresh air fan and the speed of the exhaust fan.

[0046] When both the first fresh air heat exchanger and the second fresh air heat exchanger act as evaporators, and the ratio is greater than a preset ratio, and the temperature difference or the humidity difference is less than the upper limit of the target value range, the target control parameters are determined to include controlling the first heat exchange system to reduce the operating frequency of the compressor and increase the opening of the electronic expansion valve, and controlling the fresh air equipment to reduce the speed of the fresh air fan and the speed of the exhaust fan.

[0047] When both the first and second fresh air heat exchangers act as evaporators, and the ratio is less than a preset ratio, and the temperature difference or humidity difference is less than the upper limit of the target value range, the target control parameters are determined to include controlling the second heat exchange system to reduce the operating frequency of the compressor, increasing the opening of the electronic expansion valve, and controlling the fresh air equipment to reduce the speed of the fresh air fan and the speed of the exhaust fan.

[0048] To achieve the above objectives, the present invention also provides a fresh air device, the fresh air device including a memory, a processor, and a control program of the fresh air device stored in the memory and executable on the processor, wherein when the control program of the fresh air device is executed by the processor, it implements the various steps of the control method of the fresh air device as described above.

[0049] To achieve the above objectives, the present invention also provides a computer-readable storage medium storing a control program for a fresh air device, wherein the control program for the fresh air device, when executed by a processor, implements the various steps of the control method for the fresh air device as described above.

[0050] This invention provides a control method for a fresh air system, the fresh air system itself, and a storage medium. The method involves acquiring a preset threshold range associated with the current operating condition of the fresh air system; acquiring ambient temperature and / or ambient humidity; and controlling a fresh air ratio adjustment component to adjust the ratio of return air to fresh air based on the preset threshold range, ambient temperature, and / or ambient humidity. By adjusting the ratio of return air to fresh air using the ambient temperature and / or ambient humidity detected by the fresh air system, the method promptly adjusts environmental parameters that are easily perceived by the user, ensuring that these parameters meet user needs and improving the user experience. Attached Figure Description

[0051] Figure 1This is a schematic diagram of the structure of the fresh air equipment according to an embodiment of the present invention;

[0052] Figure 2 This is a schematic diagram of the structure of the fresh air equipment according to an embodiment of the present invention;

[0053] Figure 3 This is a schematic diagram of the structure of the fresh air equipment according to an embodiment of the present invention;

[0054] Figure 4 This is a schematic diagram of the hardware structure of the fresh air equipment involved in an embodiment of the present invention;

[0055] Figure 5 This is a flowchart illustrating the first embodiment of the control method for the fresh air device of the present invention;

[0056] Figure 6 This is a flowchart illustrating a second embodiment of the control method for the fresh air device of the present invention;

[0057] Figure 7 This is a flowchart illustrating a third embodiment of the control method for the fresh air device of the present invention;

[0058] Figure 8 This is a flowchart illustrating the fourth embodiment of the control method for the fresh air device of the present invention;

[0059] Figure 9 This is a flowchart illustrating the fifth embodiment of the control method for the fresh air device of the present invention.

[0060] 10 Exhaust duct 11 Exhaust fan 12 Exhaust valve 20 Fresh air duct 21 Fresh air fan 22 Fresh air valve 23 Bypass ventilation valve 31 First heat exchanger 32 Second heat exchanger 33 Electronic expansion valve 34 Four-way valve 35 compressor 41 Third heat exchanger 42 Fourth heat exchanger 43 Electronic expansion valve 44 Four-way valve 45 compressor 46 outdoor fan 50 Humidifier

[0061] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0062] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0063] The main solution of this invention is: to obtain a preset threshold range associated with the current operating conditions of the fresh air device; to obtain the ambient temperature and / or ambient humidity; and to control the fresh air ratio adjustment component to adjust the ratio of return air to fresh air based on the preset threshold range, ambient temperature and / or ambient humidity.

[0064] By adjusting the ratio of return air to fresh air based on the ambient temperature and / or humidity detected by the fresh air system, the system can promptly adjust environmental parameters that are easily perceived by users, ensuring that these parameters meet user needs and improving user experience and comfort.

[0065] Reference Figure 1 , Figure 1The fresh air device of the present invention includes: an exhaust duct 10; a fresh air duct 20; and at least one first heat exchange system, the first heat exchange system including a first heat exchanger 31 and a second heat exchanger 32, wherein the first heat exchanger 31 is located in the exhaust duct 10, and the second heat exchanger 32 is located in the fresh air duct 20. The number of second heat exchangers 32 can be two, and both second heat exchangers 32 are fresh air heat exchangers.

[0066] During the operation of the fresh air unit, in cooling mode, the refrigerant circulation path of the first heat exchange system is as follows: compressor 35, four-way valve 34, first heat exchanger 31, electronic expansion valve 33, second heat exchanger 32, electronic expansion valve 33, second heat exchanger 32, four-way valve 34, and finally back to compressor 35. In heating mode, the refrigerant circulation path of the first heat exchange system is as follows: compressor 35, four-way valve 34, second heat exchanger 32, electronic expansion valve 33, second heat exchanger 32, electronic expansion valve 33, first heat exchanger 31, four-way valve 34, and finally back to compressor 35.

[0067] Optionally, the area of ​​the fourth heat exchanger is less than or equal to 50% of the area of ​​the third heat exchanger; and the area of ​​the second heat exchanger is less than or equal to 150% of the area of ​​the first heat exchanger.

[0068] Optionally, refer to Figure 2 The fresh air equipment includes at least one second heat exchange system, the second heat exchange system including a third heat exchanger 41 and a fourth heat exchanger 42, the third heat exchanger 41 being located in the fresh air duct 10, and the fourth heat exchanger 42 being located outdoors. Figure 2 In this embodiment, there is one second heat exchanger 32 and one third heat exchanger 41. Both the second heat exchanger 32 and the third heat exchanger 41 are fresh air heat exchangers, wherein the third heat exchanger 41 is the first fresh air heat exchanger and the second heat exchanger 32 is the second fresh air heat exchanger. In cooling mode, the refrigerant circulation of the second heat exchange system is through the compressor 45, the four-way valve 44, the fourth heat exchanger 42, the electronic expansion valve 43, the third heat exchanger 41, the four-way valve 44, and finally back to the compressor 45. In heating mode, the refrigerant circulation of the second heat exchange system is through the compressor 45, the four-way valve 44, the third heat exchanger 41, the electronic expansion valve 43, the fourth heat exchanger 42, the four-way valve 44, and finally back to the compressor 45.

[0069] exist Figure 3In this embodiment, there are two second heat exchangers 32 and two third heat exchangers 41. Both the two second heat exchangers 32 and the two third heat exchangers 41 are fresh air heat exchangers. One of the two second heat exchangers 32 located upstream of the fresh air duct is the second fresh air heat exchanger. One of the two third heat exchangers 41 located upstream of the fresh air duct is the first fresh air heat exchanger. The first fresh air heat exchanger is located upstream of the second fresh air heat exchanger. There are also two electronic expansion valves 33 and two electronic expansion valves 43.

[0070] Optionally, the exhaust duct 10 is provided with an exhaust fan 11 at its first end and an exhaust valve 12 at its second end; the fresh air duct 20 is provided with a fresh air fan 21 at its first end and a fresh air valve 22 at its second end; a bypass valve 23 is provided between the exhaust duct 10 and the fresh air duct 20. The fresh air proportioning adjustment component includes the exhaust valve 12, the fresh air valve 22, and the bypass valve 23.

[0071] Optionally, refer to Figure 2 The fresh air duct 20 of the fresh air equipment is equipped with a humidification device 50.

[0072] As one solution, fresh air systems can be like... Figure 4 As shown.

[0073] The embodiments of this invention relate to a fresh air system, which includes: a processor 101, such as a CPU, a memory 102, and a communication bus 103. The communication bus 103 is used to enable communication between these components.

[0074] Memory 102 can be high-speed RAM or stable memory (non-volatile memory), such as disk storage. Figure 4 As shown, the memory 102, which is a computer-readable storage medium, may include a control program for a fresh air system; and the processor 101 may be used to call the control program for the fresh air system stored in the memory 102 and perform the following operations:

[0075] Obtain the preset threshold range associated with the current operating conditions of the fresh air system;

[0076] Obtain ambient temperature and / or ambient humidity;

[0077] The fresh air ratio adjustment component is controlled according to the preset threshold range, the ambient temperature and / or the ambient humidity to adjust the ratio of return air to fresh air.

[0078] In one embodiment, the processor 101 can be used to call the control program of the fresh air device stored in the memory 102 and perform the following operations:

[0079] When the ambient temperature and / or the ambient humidity are within a first preset range, the fresh air ratio adjustment component is controlled to reduce the proportion of fresh air.

[0080] In one embodiment, the processor 101 can be used to call the control program of the fresh air device stored in the memory 102 and perform the following operations:

[0081] When the ambient temperature and / or the ambient humidity are within a second preset range, obtain the air quality parameters;

[0082] Based on the air quality range in which the air quality parameters are located, the fresh air ratio adjustment component is controlled to adjust the ratio of return air to fresh air.

[0083] In one embodiment, the processor 101 can be used to call the control program of the fresh air device stored in the memory 102 and perform the following operations:

[0084] When the air quality parameter is within the first quality range, the fresh air ratio adjustment component is controlled to reduce the proportion of fresh air.

[0085] When the air quality parameter is within the second quality range, the fresh air ratio adjustment component is controlled to increase the proportion of fresh air.

[0086] The air quality characterized by the first quality range is superior to the air quality characterized by the second quality range.

[0087] In one embodiment, the processor 101 can be used to call the control program of the fresh air device stored in the memory 102 and perform the following operations:

[0088] Increase the opening degree of the bypass ventilation valve;

[0089] Reduce the opening degree of the fresh air valve;

[0090] Reduce the opening degree of the exhaust valve.

[0091] In one embodiment, the processor 101 can be used to call the control program of the fresh air device stored in the memory 102 and perform the following operations:

[0092] Reduce the opening degree of the bypass ventilation valve;

[0093] Increase the opening degree of the fresh air valve;

[0094] Increase the opening degree of the exhaust valve.

[0095] In one embodiment, the processor 101 can be used to call the control program of the fresh air device stored in the memory 102 and perform the following operations:

[0096] Obtain the set threshold range associated with the current operating condition of the fresh air device;

[0097] Obtain real-time ambient temperature and / or real-time ambient humidity;

[0098] Based on the set threshold range, the real-time ambient temperature and / or the real-time ambient humidity, control at least one of the following: the operating frequency of the compressor, the opening degree of the electronic expansion valve, the speed of the fresh air fan, and the speed of the exhaust fan.

[0099] In one embodiment, the processor 101 can be used to call the control program of the fresh air device stored in the memory 102 and perform the following operations:

[0100] When the real-time ambient temperature and / or the real-time ambient temperature is within a first set range, control the fresh air equipment to increase the operating frequency of the compressor, decrease the opening of the electronic expansion valve, increase the speed of the fresh air fan, and increase the speed of the exhaust fan, at least one of these actions.

[0101] When the real-time ambient temperature and / or the real-time ambient temperature is within a second set range, the fresh air equipment is controlled to reduce at least one of the following: reduce the operating frequency of the compressor, increase the opening of the electronic expansion valve, reduce the speed of the fresh air fan, and reduce the speed of the exhaust fan.

[0102] In one embodiment, the processor 101 can be used to call the control program of the fresh air device stored in the memory 102 and perform the following operations:

[0103] Determine the real-time ambient temperature and the real-time ambient humidity, and the third temperature and third humidity corresponding to the set threshold range, respectively;

[0104] Determine the temperature difference between the real-time ambient temperature and the third temperature, and / or determine the humidity difference between the real-time ambient humidity and the third humidity;

[0105] The target control parameters are determined based on the temperature difference and / or the humidity difference, and the target control parameters include at least one of the following: the operating frequency of the compressor, the opening degree of the electronic expansion valve, the speed of the fresh air fan, and the speed of the exhaust fan.

[0106] The operation of the first heat exchange system and / or the operation of the second heat exchange system are controlled according to the target control parameters.

[0107] In one embodiment, the processor 101 can be used to call the control program of the fresh air device stored in the memory 102 and perform the following operations:

[0108] Obtain the temperature of the first heat exchanger of the first fresh air heat exchanger and the temperature of the second heat exchanger of the second fresh air heat exchanger;

[0109] Determine the ratio between the temperatures of the first heat exchanger and the second heat exchanger;

[0110] When both the first fresh air heat exchanger and the second fresh air heat exchanger act as evaporators, and the ratio is greater than a preset ratio, and the temperature difference or the humidity difference is greater than the upper limit of the target value range, the target control parameters are determined to include controlling the first heat exchange system to increase the operating frequency of the compressor and decrease the opening of the electronic expansion valve, and controlling the fresh air equipment to increase the speed of the fresh air fan and the speed of the exhaust fan.

[0111] When both the first fresh air heat exchanger and the second fresh air heat exchanger act as evaporators, and the ratio is less than a preset ratio, and the temperature difference or the humidity difference is greater than the upper limit of the target value range, the target control parameters are determined to include controlling the second heat exchange system to increase the operating frequency of the compressor, decrease the opening of the electronic expansion valve, and controlling the fresh air equipment to increase the speed of the fresh air fan and the speed of the exhaust fan.

[0112] When both the first fresh air heat exchanger and the second fresh air heat exchanger act as evaporators, and the ratio is greater than a preset ratio, and the temperature difference or the humidity difference is less than the upper limit of the target value range, the target control parameters are determined to include controlling the first heat exchange system to reduce the operating frequency of the compressor and increase the opening of the electronic expansion valve, and controlling the fresh air equipment to reduce the speed of the fresh air fan and the speed of the exhaust fan.

[0113] When both the first and second fresh air heat exchangers act as evaporators, and the ratio is less than a preset ratio, and the temperature difference or humidity difference is less than the upper limit of the target value range, the target control parameters are determined to include controlling the second heat exchange system to reduce the operating frequency of the compressor, increasing the opening of the electronic expansion valve, and controlling the fresh air equipment to reduce the speed of the fresh air fan and the speed of the exhaust fan.

[0114] Based on the hardware architecture of the above-mentioned fresh air equipment, an embodiment of the control method of the fresh air equipment of the present invention is proposed.

[0115] Reference Figure 5 , Figure 5 This is a first embodiment of the control method for a fresh air device of the present invention, the control method for the fresh air device includes the following steps:

[0116] Step S10: Obtain the preset threshold range associated with the current operating condition of the fresh air equipment;

[0117] Specifically, the current operating status of the fresh air system is obtained, including whether it is in cooling or heating mode. Optionally, the fresh air system can be an air conditioner or an air handling unit such as an air sterilizer.

[0118] Optionally, the preset threshold range includes a first preset range and a second preset range. The first and second preset ranges differ for different operating conditions. Optionally, when the ambient temperature and / or ambient humidity are within the first preset range, it indicates a significant difference between the indoor temperature and / or indoor humidity and the target temperature and / or target humidity. In this case, users are likely to perceive that the indoor temperature and humidity do not meet their needs. By controlling the fresh air conditioning component to reduce the proportion of fresh air, the indoor temperature and / or indoor humidity are prioritized to meet the requirements. When the ambient temperature and / or ambient humidity are within the second preset range, it indicates a small difference between the indoor temperature and / or indoor humidity and the target temperature and / or target humidity, or that both the indoor temperature and indoor humidity meet the preset requirements. In this case, users are likely to perceive whether the air quality meets their needs. Therefore, it is necessary to obtain air quality parameters and control the fresh air ratio adjustment component to adjust the ratio of return air to fresh air based on the air quality parameters.

[0119] Optionally, in cooling mode, the first preset range is: ambient temperature greater than a first temperature T1, or ambient humidity greater than a first humidity d1; the second preset range is: ambient temperature less than or equal to the first temperature T1, and ambient humidity less than or equal to the first humidity d1. Specifically, when only ambient temperature is acquired, the first preset range is: ambient temperature greater than the first temperature T1, and the second preset range is: ambient temperature less than or equal to the first temperature T1; when only ambient humidity is acquired, the first preset range is: ambient humidity greater than the first humidity d1, and the second preset range is: ambient humidity less than or equal to the first humidity d1; when both ambient temperature and ambient humidity are acquired, the first preset range is: ambient temperature greater than the first temperature T1, or ambient humidity greater than the first humidity d1, and the second preset range is: ambient temperature less than or equal to the first temperature T1, and ambient humidity less than or equal to the first humidity d1.

[0120] Optionally, in heating mode, the first preset range is: the ambient temperature is less than the second temperature T2, or the ambient humidity is less than the second humidity d2; the second preset range is: the ambient temperature is greater than or equal to the second temperature T2, and the ambient humidity is greater than or equal to the second humidity d2. Specifically, when only the ambient temperature is acquired, the first preset range is: the ambient temperature is less than the first temperature T1, and the second preset range is: the ambient temperature is greater than or equal to the first temperature T1; when only the ambient humidity is acquired, the first preset range is: the ambient humidity is less than the first humidity d1, and the second preset range is: the ambient humidity is greater than or equal to the first humidity d1; when both ambient temperature and ambient humidity are acquired, the first preset range is: the ambient temperature is less than the first temperature T1, or the ambient humidity is less than the first humidity d1, and the second preset range is: the ambient temperature is greater than or equal to the first temperature T1, and the ambient humidity is greater than or equal to the first humidity d1.

[0121] Step S20: Obtain ambient temperature and / or ambient humidity.

[0122] Optionally, the ambient temperature obtained by the fresh air system includes one of the return air temperature, fresh air temperature, room temperature, or supply air temperature of the fresh air system.

[0123] Optionally, the ambient humidity obtained by the fresh air system includes one of the return air humidity, fresh air humidity, room humidity, or supply air humidity.

[0124] Step S30: Control the fresh air ratio adjustment component to adjust the ratio of return air to fresh air according to the preset threshold range, the ambient temperature and / or the ambient humidity.

[0125] Specifically, the fresh air system includes a fresh air ratio adjustment component for adjusting the ratio of return air to fresh air in the indoor air supply. Optionally, the fresh air ratio adjustment component includes a fresh air valve, an exhaust air valve, and a bypass ventilation valve. The fresh air valve is located in the fresh air duct and is used to adjust the fresh air volume; the exhaust air valve is located in the exhaust air duct and is used to adjust the exhaust air volume; and the bypass ventilation valve is located between the fresh air duct and the exhaust air duct and is used to adjust the return air volume entering the fresh air duct from the exhaust air duct.

[0126] Optionally, when the ambient temperature and / or ambient humidity are within a first preset range, the fresh air proportion adjustment component is controlled to reduce the proportion of fresh air. Optionally, reducing the proportion of fresh air can be achieved by increasing the opening degree of the bypass ventilation valve; and / or decreasing the opening degree of the fresh air valve; and / or decreasing the opening degree of the exhaust air valve. Optionally, reducing the proportion of fresh air can also be achieved by decreasing the speed of the fresh air fan and / or increasing the speed of the exhaust fan.

[0127] In the technical solution of this embodiment, the ratio of return air to fresh air is adjusted by detecting the ambient temperature and / or ambient humidity of the fresh air equipment, so as to adjust the environmental parameters that are easily perceived by the user in a timely manner, so as to meet the user's needs in a timely manner and improve the user experience and comfort.

[0128] Reference Figure 6 , Figure 6 This is a second embodiment of the control method for the fresh air device of the present invention. Based on the first embodiment, after step S30, it further includes:

[0129] Step S40: When the ambient temperature and / or the ambient humidity are within a first preset range, control the fresh air ratio adjustment component to reduce the proportion of fresh air.

[0130] Optionally, when the ambient temperature and / or ambient humidity are within a first preset range, indicating a significant difference between the indoor temperature and / or indoor humidity and the target temperature and / or target humidity, users are likely to perceive that the indoor temperature and humidity do not meet their needs. In this case, the proportion of fresh air can be reduced by controlling the fresh air conditioning components to ensure that the indoor temperature and humidity meet the requirements first. Optionally, reducing the proportion of fresh air can be achieved by increasing the opening of the bypass ventilation valve; and / or decreasing the opening of the fresh air damper; and / or decreasing the opening of the exhaust damper. Optionally, reducing the proportion of fresh air can also be achieved by decreasing the speed of the fresh air fan and / or increasing the speed of the exhaust fan.

[0131] In the technical solution of this embodiment, when the ambient temperature and / or the ambient humidity are within a first preset range, the control method further includes: controlling the first heat exchange system and / or the second heat exchange system to increase the operating frequency of the compressor, decrease the opening of the electronic expansion valve, increase the speed of the fresh air fan and the speed of the exhaust fan, so as to quickly achieve temperature and humidity regulation and ensure that the indoor temperature and indoor humidity meet the requirements in a timely manner.

[0132] In the technical solution of this embodiment, since ambient temperature and / or ambient humidity are more easily perceived by users than other air quality parameters, the ambient temperature and / or ambient humidity are ensured to meet the standards first to ensure the user's maximum comfort.

[0133] Reference Figure 7 , Figure 7 This is a third embodiment of the control method for the fresh air device of the present invention, based on the first or second embodiment, wherein after step S30, it further includes:

[0134] Step S50: When the ambient temperature and / or the ambient humidity are within a second preset range, obtain air quality parameters;

[0135] Step S60: Based on the air quality range in which the air quality parameters are located, control the fresh air ratio adjustment component to adjust the ratio of return air to fresh air.

[0136] Specifically, when the ambient temperature and / or ambient humidity are within a second preset range, air quality parameters are acquired. Optionally, the air quality parameters include at least one of CO2 concentration, PM2.5 concentration, TVOC (Total Volatile Organic Compounds) concentration, and alcohol CHO concentration.

[0137] The air quality parameters are determined to fall within a specific air quality range. Optionally, this range includes a first quality range and a second quality range, where the air quality represented by the first quality range is better than that represented by the second quality range. When the air quality parameters are within the first quality range, indicating better air quality, the fresh air ratio adjustment component is controlled to reduce the proportion of fresh air, thereby reducing the energy consumption of the air handling equipment. When the air quality parameters are within the second quality range, indicating poorer air quality, the fresh air ratio adjustment component is controlled to increase the proportion of fresh air, thereby improving the indoor air quality and enhancing user experience and comfort.

[0138] Optionally, when the air quality parameter includes CO2 concentration, if the CO2 concentration is less than or equal to a preset first concentration threshold, the air quality parameter is determined to be within a first quality range; if the CO2 concentration is greater than the preset first concentration threshold, the air quality parameter is determined to be within a second quality range.

[0139] Optionally, when the air quality parameter includes PM2.5 concentration, if the PM2.5 concentration is less than or equal to a preset second concentration threshold, the air quality parameter is determined to be within a first quality range; if the PM2.5 concentration is greater than the preset second concentration threshold, the air quality parameter is determined to be within a second quality range.

[0140] Optionally, when the TVOC concentration is less than or equal to a preset third concentration threshold, the air quality parameter is determined to be within a first quality range; when the TVOC concentration is greater than the preset third concentration threshold, the air quality parameter is determined to be within a second quality range.

[0141] Optionally, when the air quality parameter includes CHO concentration, if the CHO concentration is less than or equal to a preset fourth concentration threshold, the air quality parameter is determined to be in a first quality range; if the CHO concentration is greater than the preset fourth concentration threshold, the air quality parameter is determined to be in a second quality range.

[0142] Optionally, when the air quality parameters include CO2 concentration and PM2.5 concentration, if the CO2 concentration is less than or equal to a preset first concentration threshold and the PM2.5 concentration is less than or equal to a preset second concentration threshold, the air quality parameters are determined to be within a first quality range; if the CO2 concentration is greater than the preset first concentration threshold or the PM2.5 concentration is greater than the preset second concentration threshold, the air quality parameters are determined to be within a second quality range.

[0143] Optionally, when the air quality parameters include CO2 concentration and TVOC concentration, if the CO2 concentration is less than or equal to a preset first concentration threshold and the TVOC concentration is less than or equal to a preset third concentration threshold, the air quality parameters are determined to be within a first quality range; if the CO2 concentration is greater than the preset first concentration threshold or the TVOC concentration is greater than the preset third concentration threshold, the air quality parameters are determined to be within a second quality range.

[0144] Optionally, when the air quality parameters include CO2 concentration and CHO concentration, if the CO2 concentration is less than or equal to a preset first concentration threshold and the CHO concentration is less than or equal to a preset fourth concentration threshold, the air quality parameters are determined to be within a first quality range; if the CO2 concentration is greater than the preset first concentration threshold or the CHO concentration is greater than the preset fourth concentration threshold, the air quality parameters are determined to be within a second quality range.

[0145] Optionally, when the air quality parameters include PM2.5 concentration and TVOC concentration, if the PM2.5 concentration is less than or equal to a preset second concentration threshold and the TVOC concentration is less than or equal to a preset third concentration threshold, the air quality parameters are determined to be within a first quality range; if the PM2.5 concentration is greater than the preset second concentration threshold or the TVOC concentration is greater than the preset third concentration threshold, the air quality parameters are determined to be within a second quality range.

[0146] Optionally, when the air quality parameters include PM2.5 concentration and CHO concentration, if the PM2.5 concentration is less than or equal to a preset second concentration threshold and the CHO concentration is less than or equal to a preset fourth concentration threshold, the air quality parameters are determined to be within a first quality range; if the PM2.5 concentration is greater than the preset second concentration threshold or the CHO concentration is greater than the preset fourth concentration threshold, the air quality parameters are determined to be within a second quality range.

[0147] Optionally, when the air quality parameters include TVOC concentration and CHO concentration, if the TVOC concentration is less than or equal to a preset third concentration threshold and the CHO concentration is less than or equal to a preset fourth concentration threshold, the air quality parameters are determined to be in a first quality range; if the TVOC concentration is greater than the preset third concentration threshold or the CHO concentration is greater than the preset fourth concentration threshold, the air quality parameters are determined to be in a second quality range.

[0148] Optionally, when the air quality parameters include CO2 concentration, TVOC concentration, and CHO concentration, the air quality parameters are determined to be within a first quality range when the CO2 concentration is less than or equal to a preset first concentration threshold, the TVOC concentration is less than or equal to a preset third concentration threshold, and the CHO concentration is less than or equal to a preset fourth concentration threshold. Alternatively, the air quality is determined to be within a second quality range when the CO2 concentration is greater than a preset concentration, or the TVOC concentration is greater than a preset concentration, or the CHO concentration is greater than a preset concentration.

[0149] Optionally, when the air quality parameters include CO2 concentration, PM2.5 concentration, and CHO concentration, the air quality parameters are determined to be within a first quality range when the CO2 concentration is less than or equal to a preset first concentration threshold, the PM2.5 concentration is less than or equal to a preset second concentration threshold, and the CHO concentration is less than or equal to a preset fourth concentration threshold. Optionally, the air quality is determined to be within a second quality range when the CO2 concentration is greater than a preset concentration, or the PM2.5 concentration is greater than a preset concentration, or the CHO concentration is greater than a preset concentration.

[0150] Optionally, when the air quality parameters include CO2 concentration, PM2.5 concentration, and TVOC concentration, the air quality parameters are determined to be within a first quality range when the CO2 concentration is less than or equal to a preset first concentration threshold, the PM2.5 concentration is less than or equal to a preset second concentration threshold, and the TVOC concentration is less than or equal to a preset third concentration threshold. Optionally, the air quality is determined to be within a second quality range when the CO2 concentration is greater than a preset concentration, or the PM2.5 concentration is greater than a preset concentration, or the TVOC concentration is greater than a preset concentration.

[0151] Optionally, when the air quality parameters include PM2.5 concentration, TVOC concentration, and CHO concentration, the air quality parameters are determined to be within a first quality range when the PM2.5 concentration is less than or equal to a preset second concentration threshold, the TVOC concentration is less than or equal to a preset third concentration threshold, and the CHO concentration is less than or equal to a preset fourth concentration threshold. Optionally, the air quality is determined to be within a second quality range when the PM2.5 concentration is greater than a preset concentration, or the TVOC concentration is greater than a preset concentration, or the CHO concentration is greater than a preset concentration.

[0152] Optionally, when the air quality parameters include CO2 concentration, PM2.5 concentration, TVOC concentration, and CHO concentration, the air quality parameters are determined to be within a first quality range when the CO2 concentration is less than or equal to a preset first concentration threshold, the PM2.5 concentration is less than or equal to a preset second concentration threshold, the TVOC concentration is less than or equal to a preset third concentration threshold, and the CHO concentration is less than or equal to a preset fourth concentration threshold. Optionally, the air quality is determined to be within a first quality range when the CO2 concentration is ≤1500ppm, the PM2.5 concentration is ≤300μg / m3, the TVOC concentration is ≤0.6mg / m3, and the CHO concentration is ≤0.6mg / m3. Optionally, the air quality is determined to be within a second quality range when the CO2 concentration is greater than a preset concentration, or the PM2.5 concentration is greater than a preset concentration, or the TVOC concentration is greater than a preset concentration, or the CHO concentration is greater than a preset concentration. Optionally, the air quality parameters are determined to be within the second quality range if the CO2 concentration is ≥1500ppm; or the PM2.5 concentration is ≥300μg / m3; or the TVOC concentration is ≥0.6mg / m3; or the CHO concentration is ≥0.6mg / m3.

[0153] When the ambient temperature and / or humidity are within a second preset range, and the difference between the ambient temperature and / or humidity and the target temperature and humidity is small, if the air quality parameters meet the first quality range, the energy consumption of the fresh air equipment can be avoided by reducing the fresh air volume / reducing the proportion of fresh air. Specifically, when the ambient temperature and / or humidity are within the second preset range and the air quality parameters are within the first quality range, the fresh air equipment can reduce the proportion of fresh air by controlling the fresh air ratio adjustment component. Optionally, the fresh air ratio adjustment component includes a fresh air valve, an exhaust air valve, and a bypass ventilation valve, increasing the opening of the bypass ventilation valve; and / or decreasing the opening of the fresh air valve; and / or decreasing the opening of the exhaust air valve. Optionally, the fresh air ratio adjustment component includes a fresh air fan and an exhaust fan, decreasing the speed of the fresh air fan, and / or increasing the speed of the exhaust fan to reduce the proportion of fresh air in the return air.

[0154] When the ambient temperature and / or ambient humidity are within a second preset range, and the air quality parameters are within a second quality range, the difference between the ambient temperature and / or ambient humidity and the target temperature and humidity is small, while the difference between the indoor air quality and the target air quality is large. Users are more likely to perceive that the air quality does not meet their needs. By controlling the fresh air ratio adjustment component to increase the proportion of fresh air, optionally, the fresh air ratio adjustment component includes a fresh air valve, an exhaust air valve, and a bypass ventilation valve. Increasing the opening of the bypass ventilation valve; and / or decreasing the opening of the fresh air valve; and / or decreasing the opening of the exhaust air valve, reduces the proportion of fresh air in the return air. By changing the fresh air ratio through the action of the three valves, air quality is quickly addressed, ensuring the air quality is readily perceptible to the user. Optionally, the fresh air ratio adjustment component includes a fresh air fan and an exhaust fan. Decreasing the speed of the fresh air fan; and / or increasing the speed of the exhaust fan, reduces the proportion of fresh air in the return air.

[0155] In this embodiment, the first heat exchange system and / or the second heat exchange system may remain unchanged: that is, the operating frequency of the compressor and the opening degree of the electronic expansion valve in the first heat exchange system and / or the second heat exchange system remain unchanged.

[0156] In the technical solution of this embodiment, the control parameters of the fresh air ratio adjustment component are determined by the ambient temperature and / or ambient humidity, as well as air quality parameters. This can improve the control accuracy of the fresh air ratio in the fresh air equipment and promptly meet the environmental parameters that are easily perceived by the user.

[0157] Reference Figure 8 , Figure 8 This is a fourth embodiment of the control method for the fresh air device of the present invention. Based on any one of the first to third embodiments, after step S30, it further includes:

[0158] Step S70: Obtain the set threshold range associated with the current operating condition of the fresh air device, wherein the set threshold range includes a first set range and a second set range;

[0159] Step S80: Obtain the real-time ambient temperature and / or real-time ambient humidity;

[0160] Step S90: Based on the set threshold range, the real-time ambient temperature and / or the real-time ambient humidity, control at least one of the following: the operating frequency of the compressor, the opening degree of the electronic expansion valve, the speed of the fresh air fan, and the speed of the exhaust fan.

[0161] Specifically, the real-time ambient temperature refers to the ambient temperature detected at the current moment, which may include one of the following: the return air temperature of the fresh air unit, the fresh air temperature, the supply air temperature, or the room temperature. The real-time ambient humidity refers to the ambient humidity detected at the current moment. Optionally, the real-time ambient humidity may include one of the following: the return air humidity, the fresh air humidity, the supply air humidity, or the room humidity.

[0162] The current operating conditions of the fresh air system are associated with a set threshold range. Optionally, the set threshold range includes a first set range and a second set range.

[0163] Optionally, the real-time ambient temperature is acquired. If the real-time ambient temperature reaches a set target temperature threshold, the real-time ambient temperature is determined to be within a first set range. Optionally, if the real-time ambient temperature does not reach the set target temperature threshold, the real-time ambient temperature is determined to be within a second set range.

[0164] Optionally, the real-time ambient humidity is acquired. Optionally, when the real-time ambient humidity reaches a set target humidity threshold, the real-time ambient humidity is determined to be within a first set range. Optionally, when the real-time ambient humidity does not reach the set target humidity threshold of the fresh air device, the real-time ambient humidity is determined to be within a second set range.

[0165] Optionally, the real-time ambient temperature and humidity are acquired. Optionally, when the real-time ambient temperature reaches a set target temperature threshold and the real-time ambient humidity reaches a set target humidity threshold, the real-time ambient temperature and humidity are determined to be within a first set range. Optionally, when the real-time ambient temperature does not reach the set target temperature threshold and / or the real-time ambient humidity does not reach the set target humidity threshold of the fresh air device, the real-time ambient temperature and humidity are determined to be within a second set range.

[0166] Based on a set threshold range, real-time ambient temperature, and / or real-time ambient humidity, control at least one of the following: compressor operating frequency, electronic expansion valve opening, fresh air fan speed, and exhaust fan speed. Optionally, when the real-time ambient temperature and / or ambient humidity is within a first set range, control the fresh air equipment to increase at least one of the following: increase compressor operating frequency, decrease electronic expansion valve opening, increase fresh air fan speed, and increase exhaust fan speed.

[0167] Optionally, when the real-time ambient temperature and / or the real-time ambient temperature is within a second set range, the fresh air equipment is controlled to reduce at least one of the following: reduce the operating frequency of the compressor, increase the opening of the electronic expansion valve, reduce the speed of the fresh air fan, and reduce the speed of the exhaust fan.

[0168] In this embodiment of the application, when step S90 is executed, the ratio of return air to fresh air remains unchanged or varies within a small set range, thereby ensuring that the air quality is within a range that the user feels comfortable. Therefore, the speed of the fresh air fan and the speed of the exhaust fan need to be adjusted simultaneously and positively correlated. For example, the speed of the fresh air fan and the speed of the exhaust fan are increased or decreased proportionally to ensure that the ratio of return air to fresh air remains unchanged or varies within a small set range.

[0169] In the technical solution of this embodiment, the target control parameters of the fresh air equipment are determined by the ambient temperature and / or ambient humidity, which can improve the fresh air equipment to quickly reach the set threshold range associated with the operating conditions and ensure control accuracy.

[0170] Reference Figure 9 , Figure 9 In the fifth embodiment of the control method for the fresh air device of the present invention, based on any one of the first to fourth embodiments, step S90 includes:

[0171] Step S91: Determine the real-time ambient temperature and the real-time ambient humidity, and the third temperature and third humidity corresponding to the set threshold range, respectively;

[0172] Step S92: Determine the temperature difference between the real-time ambient temperature and the third temperature, and / or determine the humidity difference between the real-time ambient humidity and the third humidity;

[0173] Step S93: Determine target control parameters based on the temperature difference and / or the humidity difference. The target control parameters include at least one of the following: the operating frequency of the compressor, the opening degree of the electronic expansion valve, the speed of the fresh air fan, and the speed of the exhaust fan.

[0174] Step S94: Control the operation of the first heat exchange system and / or control the operation of the second heat exchange system according to the target control parameters.

[0175] Specifically, the fresh air equipment includes a first heat exchange system and a second heat exchange system. The first heat exchange system includes a first fresh air heat exchanger, and the second heat exchange system includes a second fresh air heat exchanger. The first and second fresh air heat exchangers are located in the fresh air duct and are arranged sequentially along the airflow direction in the fresh air duct.

[0176] Optionally, the third temperature corresponding to the real-time ambient temperature and the set threshold range is the set target temperature threshold; optionally, the third humidity corresponding to the real-time ambient humidity and the set threshold range is the set target humidity threshold.

[0177] Optionally, the third temperature T3 and the third humidity d3 are target temperature thresholds and target humidity thresholds input by the user via a remote control or smart device. Optionally, the third temperature T3 and the third humidity d3 can be the target temperature and target humidity associated with the user-selected operating mode. For example, in the strong cooling mode, the third temperature T3 is 16 degrees and the third humidity d3 is 40%.

[0178] Optionally, the third temperature may include one of the following: return air temperature threshold, fresh air temperature threshold, supply air temperature threshold, and room temperature threshold. For example, in cooling mode, the return air temperature threshold T1c ∈ [15,32]℃, and in heating mode, the return air temperature threshold T1h ∈ [12,32]℃. In cooling mode, the fresh air temperature threshold Twc ∈ [10,50]℃, and in heating mode, the fresh air temperature threshold Twh ∈ [-30,25]℃. In cooling mode, the supply air temperature threshold Toc ∈ [5,32]℃, and in heating mode, the supply air temperature threshold Toh ∈ [15,60]℃. In cooling mode, the room temperature threshold T1c ∈ [15,32]℃, and in heating mode, the room temperature threshold T1h ∈ [12,32]℃.

[0179] Optionally, the third humidity includes one of the return air humidity threshold, the fresh air humidity threshold, the supply air humidity threshold, and the room humidity threshold. For example, the return air humidity threshold is [5,14] g / kg, the fresh air humidity threshold is [5,18] g / kg, the supply air humidity threshold is [5,16] g / kg, and the room humidity threshold is [5,14] g / kg.

[0180] The temperature difference between the real-time ambient temperature and the third temperature is determined, and / or the temperature difference between the real-time ambient humidity and the third humidity is determined. Optionally, a ratio, difference, product, or sum can also be determined. Optionally, a first ratio between the real-time ambient temperature T1 and the third temperature T3 is determined, for example, the first ratio is T1 / T3. Optionally, a second ratio between the real-time ambient humidity d1 and the third humidity d3 is determined, for example, the second ratio is d1 / d3.

[0181] Optionally, the temperature of the first heat exchanger of the first fresh air heat exchanger and the temperature of the second heat exchanger of the second fresh air heat exchanger are obtained; and the ratio between the temperature of the first heat exchanger and the temperature of the second heat exchanger is determined.

[0182] Optionally, when both the first fresh air heat exchanger and the second fresh air heat exchanger are used as evaporators, and the ratio is greater than the preset ratio, and the temperature difference or humidity difference is greater than the upper limit of the target value range, the target control parameters are determined to include controlling the first heat exchange system to increase the operating frequency of the compressor, reducing the opening of the electronic expansion valve, and controlling the fresh air equipment to increase the speed of the fresh air fan and the speed of the exhaust fan.

[0183] Optionally, when both the first and second fresh air heat exchangers are used as evaporators, and their ratio is less than the preset ratio, and the temperature difference or humidity difference is greater than the upper limit of the target value range, the target control parameters are determined to include controlling the second heat exchange system to increase the operating frequency of the compressor, reducing the opening of the electronic expansion valve, and controlling the fresh air equipment to increase the speed of the fresh air fan and the speed of the exhaust fan.

[0184] Optionally, when both the first fresh air heat exchanger and the second fresh air heat exchanger are used as evaporators, and the ratio is greater than the preset ratio, and the temperature difference or humidity difference is less than the upper limit of the target value range, the target control parameters are determined to include controlling the first heat exchange system to reduce the operating frequency of the compressor, increasing the opening of the electronic expansion valve, and controlling the fresh air equipment to reduce the speed of the fresh air fan and the speed of the exhaust fan.

[0185] Optionally, when both the first and second fresh air heat exchangers act as evaporators, and their ratio is less than a preset ratio, and the temperature difference or humidity difference is less than the upper limit of the target value range, the target control parameters are determined to include controlling the second heat exchange system to reduce the operating frequency of the compressor, increasing the opening of the electronic expansion valve, and controlling the fresh air equipment to reduce the speed of the fresh air fan and the speed of the exhaust fan.

[0186] The target numerical range specifically refers to the target range that the air handling equipment's operating ratio needs to reach. The target numerical range can be a set of values ​​including a single value, meaning that the upper and lower limits of the target numerical range are the same value. Alternatively, in this embodiment, the target numerical range can be a set of values ​​including more than one value. In this embodiment, the target numerical range is an interval with both an upper and lower limit. In other embodiments, the target numerical range can also be an interval with an upper limit but no lower limit, or an interval with a lower limit but no upper limit.

[0187] Optionally, the difference between the real-time ambient temperature and the third temperature, and / or the difference between the real-time ambient humidity and the third humidity, are used to determine the compressor's operating frequency, the bypass valve opening, and / or the fresh air fan's speed. For example, when the temperature detected by the fresh air equipment is 15 degrees Celsius and the third temperature is 26 degrees Celsius, the larger the difference, the greater the increase in the compressor's operating frequency, the smaller the decrease in the bypass valve opening, and the greater the increase in the fresh air fan's speed.

[0188] In the technical solution of this embodiment, the target control parameters of the fresh air equipment are determined by the ambient temperature and / or ambient humidity, which can improve the fresh air equipment to quickly reach the set threshold range associated with the operating conditions and ensure control accuracy.

[0189] The present invention also provides a fresh air device, the fresh air device including a memory, a processor, and a control program of the fresh air device stored in the memory and executable on the processor. When the control program of the fresh air device is executed by the processor, it implements the various steps of the control method of the fresh air device as described in the above embodiments.

[0190] The present invention also provides a computer-readable storage medium storing a control program for a fresh air device, wherein the control program for the fresh air device, when executed by a processor, implements the various steps of the control method for the fresh air device as described in the above embodiments.

[0191] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0192] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, system, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, system, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, system, article, or apparatus that includes that element.

[0193] Through the above description of the embodiments, those skilled in the art can clearly understand that the systems described in the embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a computer-readable storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, parking management device, air conditioner, or network device, etc.) to execute the systems described in the various embodiments of the present invention.

[0194] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A control method for a fresh air system, characterized in that, The fresh air equipment includes a fresh air ratio adjustment component for adjusting the ratio of return air to fresh air in the air supplied to the room. The fresh air equipment also includes a compressor, an electronic expansion valve, a fresh air heat exchanger, a fresh air fan, and an exhaust fan. The fresh air heat exchanger is disposed within a fresh air duct and connected to the compressor. The fresh air fan is disposed within the fresh air duct. The fresh air equipment further includes a first heat exchange system and a second heat exchange system. The first heat exchange system includes a first fresh air heat exchanger, and the second heat exchange system includes a second fresh air heat exchanger. The first and second fresh air heat exchangers are disposed within the fresh air duct and arranged sequentially along the airflow direction within the fresh air duct. The method includes: Obtain the preset threshold range associated with the current operating conditions of the fresh air system; Obtain ambient temperature and / or ambient humidity; Based on the preset threshold range, the ambient temperature and / or the ambient humidity, the fresh air ratio adjustment component is controlled to adjust the ratio of return air to fresh air. Obtain the set threshold range associated with the current operating condition of the fresh air device; Obtain real-time ambient temperature and / or real-time ambient humidity; Controlling at least one of the following based on the set threshold range, the real-time ambient temperature, and / or the real-time ambient humidity: the operating frequency of the compressor, the opening degree of the electronic expansion valve, the speed of the fresh air fan, and the speed of the exhaust fan; determining the real-time ambient temperature and the real-time ambient humidity, and a third temperature and a third humidity corresponding to the set threshold range; determining the temperature difference between the real-time ambient temperature and the third temperature, and / or determining the humidity difference between the real-time ambient humidity and the third humidity; determining target control parameters based on the temperature difference and / or the humidity difference, the target control parameters including at least one of the operating frequency of the compressor, the opening degree of the electronic expansion valve, the speed of the fresh air fan, and the speed of the exhaust fan; and controlling the operation of the first heat exchange system and / or controlling the operation of the second heat exchange system based on the target control parameters.

2. The control method for the fresh air equipment as described in claim 1, characterized in that, The preset threshold range includes a first preset range, and the step of controlling the fresh air ratio adjustment component to adjust the ratio of return air to fresh air according to the preset threshold range, the ambient temperature and / or the ambient humidity includes: When the ambient temperature and / or the ambient humidity are within a first preset range, the fresh air ratio adjustment component is controlled to reduce the proportion of fresh air.

3. The control method for the fresh air equipment as described in claim 2, characterized in that, The preset threshold range includes a second preset range, and the step of controlling the fresh air ratio adjustment component to adjust the ratio of return air to fresh air based on the preset threshold range, the ambient temperature, and / or the ambient humidity includes: When the ambient temperature and / or the ambient humidity are within a second preset range, obtain the air quality parameters; Based on the air quality range in which the air quality parameters are located, the fresh air ratio adjustment component is controlled to adjust the ratio of return air to fresh air.

4. The control method for the fresh air equipment as described in claim 3, characterized in that, The air quality range includes a first quality range and a second quality range, wherein the air quality corresponding to the first quality range is better than the air quality of the second quality range, and the step of controlling the fresh air ratio adjustment component to adjust the ratio of return air to fresh air according to the air quality range in which the air quality parameter is located includes: When the air quality parameter is within the first quality range, the fresh air ratio adjustment component is controlled to reduce the proportion of fresh air. When the air quality parameter is within the second quality range, the fresh air ratio adjustment component is controlled to increase the proportion of fresh air. The air quality characterized by the first quality range is superior to the air quality characterized by the second quality range.

5. The control method for the fresh air equipment as described in claim 4, characterized in that, The fresh air equipment includes a fresh air duct and an exhaust air duct. The fresh air ratio adjustment component includes a fresh air valve disposed in the fresh air duct for adjusting the fresh air volume, an exhaust air valve disposed in the exhaust air duct for adjusting the exhaust air volume, and a bypass ventilation valve disposed between the fresh air duct and the exhaust air duct for adjusting the return air volume entering the fresh air duct from the exhaust air duct. The step of controlling the fresh air ratio adjustment component to reduce the proportion of fresh air includes at least one of the following: Increase the opening degree of the bypass ventilation valve; Reduce the opening degree of the fresh air valve; Reduce the opening degree of the exhaust valve.

6. The control method for the fresh air equipment as described in claim 5, characterized in that, The step of controlling the fresh air ratio adjustment component to increase the proportion of fresh air includes at least one of the following: Reduce the opening degree of the bypass ventilation valve; Increase the opening degree of the fresh air valve; Increase the opening degree of the exhaust valve.

7. The control method for the fresh air equipment as described in claim 3, characterized in that, In cooling mode, the first preset range is: the ambient temperature is greater than a first temperature, or the ambient humidity is greater than a first humidity; In cooling mode, the second preset range is: the ambient temperature is lower than the first temperature, and the ambient humidity is lower than the first humidity; In heating mode, the first preset range is: the ambient temperature is less than the second temperature, or the ambient humidity is less than the second humidity; In heating mode, the second preset range is: the ambient temperature is greater than the second temperature, and the ambient humidity is greater than the second humidity.

8. The control method for the fresh air equipment as described in claim 1, characterized in that, The set threshold range includes a first set range and a second set range. The step of controlling at least one of the following based on the set threshold range, the real-time ambient temperature and / or the real-time ambient humidity: the operating frequency of the compressor, the opening degree of the electronic expansion valve, the speed of the fresh air fan, and the speed of the exhaust fan. When the real-time ambient temperature and / or the real-time ambient temperature is within a first set range, control the fresh air equipment to increase the operating frequency of the compressor, decrease the opening of the electronic expansion valve, increase the speed of the fresh air fan, and increase the speed of the exhaust fan, at least one of these actions. When the real-time ambient temperature and / or the real-time ambient temperature is within a second set range, the fresh air equipment is controlled to reduce at least one of the following: reduce the operating frequency of the compressor, increase the opening of the electronic expansion valve, reduce the speed of the fresh air fan, and reduce the speed of the exhaust fan.

9. The control method for the fresh air equipment as described in claim 1, characterized in that, The step of determining the target control parameter based on the temperature difference and / or the humidity difference includes: Obtain the temperature of the first heat exchanger of the first fresh air heat exchanger and the temperature of the second heat exchanger of the second fresh air heat exchanger; Determine the ratio between the temperatures of the first heat exchanger and the second heat exchanger; When both the first fresh air heat exchanger and the second fresh air heat exchanger act as evaporators, and the ratio is greater than a preset ratio, and the temperature difference or the humidity difference is greater than the upper limit of the target value range, the target control parameters are determined to include controlling the first heat exchange system to increase the operating frequency of the compressor and decrease the opening of the electronic expansion valve, and controlling the fresh air equipment to increase the speed of the fresh air fan and the speed of the exhaust fan. When both the first fresh air heat exchanger and the second fresh air heat exchanger act as evaporators, and the ratio is less than a preset ratio, and the temperature difference or the humidity difference is greater than the upper limit of the target value range, the target control parameters are determined to include controlling the second heat exchange system to increase the operating frequency of the compressor, decrease the opening of the electronic expansion valve, and controlling the fresh air equipment to increase the speed of the fresh air fan and the speed of the exhaust fan. When both the first fresh air heat exchanger and the second fresh air heat exchanger act as evaporators, and the ratio is greater than a preset ratio, and the temperature difference or the humidity difference is less than the upper limit of the target value range, the target control parameters are determined to include controlling the first heat exchange system to reduce the operating frequency of the compressor and increase the opening of the electronic expansion valve, and controlling the fresh air equipment to reduce the speed of the fresh air fan and the speed of the exhaust fan. When both the first and second fresh air heat exchangers act as evaporators, and the ratio is less than a preset ratio, and the temperature difference or humidity difference is less than the upper limit of the target value range, the target control parameters are determined to include controlling the second heat exchange system to reduce the operating frequency of the compressor, increasing the opening of the electronic expansion valve, and controlling the fresh air equipment to reduce the speed of the fresh air fan and the speed of the exhaust fan.

10. A fresh air device, characterized in that, The fresh air device includes a memory, a processor, and a control program for the fresh air device stored in the memory and executable on the processor. When the control program for the fresh air device is executed by the processor, it implements the various steps of the control method for the fresh air device as described in any one of claims 1-9.

11. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a control program for a fresh air device, which, when executed by a processor, implements the various steps of the control method for the fresh air device as described in any one of claims 1-9.

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