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

Abstract

The application discloses a fresh air equipment control method, fresh air equipment and a storage medium, the method comprises the following steps: after entering a mute mode, an air quality parameter is acquired; when the air quality parameter meets a preset quality condition, the rotating speed of a fresh air fan is reduced. The application reduces the noise 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 just 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 the level of health needs, placing higher demands on freshness and cleanliness. Fresh air systems are increasingly being used as an effective and important solution. However, the larger the fresh air volume of a fresh air system, the greater its energy consumption and space requirements, but also the more pronounced the noise problem, leading to a poorer user experience. 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 of noise in fresh air systems.

[0004] To achieve the above objectives, the present invention provides a control method for a fresh air system, the control method comprising the following steps:

[0005] After entering silent mode, obtain air quality parameters;

[0006] When the air quality parameters meet the preset quality conditions, the speed of the fresh air fan is reduced.

[0007] In one embodiment, the fresh air device includes a first heat exchange system, which includes a first compressor and a first heat exchange module. Both the first compressor and the first heat exchange module are disposed within the fresh air duct. Before acquiring air quality parameters, the device further includes:

[0008] Obtain the first operating frequency of the first compressor;

[0009] When the first operating frequency is greater than the first frequency threshold, the first operating frequency of the first compressor is reduced.

[0010] After reducing the first operating frequency of the first compressor, the current operating frequency of the first compressor is obtained;

[0011] When the current operating frequency is less than the second frequency threshold, the step of obtaining air quality parameters is executed.

[0012] In one embodiment, the fresh air device includes a first heat exchange system and a second heat exchange system. The first heat exchange system includes a first compressor and a first heat exchange module. The second heat exchange system includes a second compressor and a second heat exchange module. Both the first heat exchange module and the second heat exchange module are disposed within the fresh air duct. Before acquiring the air quality parameters, the device further includes:

[0013] Obtain the first operating frequency of the first compressor;

[0014] When the first operating frequency is greater than the first frequency threshold, the first operating frequency of the first compressor is reduced and the second operating frequency of the second compressor is increased.

[0015] After reducing the first operating frequency of the first compressor, the current operating frequency of the first compressor is obtained;

[0016] When the current operating frequency is less than the second frequency threshold, the step of obtaining air quality parameters is executed.

[0017] In one embodiment, the fresh air device includes an exhaust fan, the first heat exchange system further includes an exhaust heat exchanger, both the exhaust heat exchanger and the exhaust fan are disposed within the exhaust duct, and the first compressor is disposed within the exhaust duct or the fresh air duct. Before acquiring air quality parameters, the system further includes:

[0018] When the current operating frequency is less than the second frequency threshold, the condensation temperature of the first heat exchange system is obtained;

[0019] When the condensation temperature is lower than the preset temperature threshold, the speed of the exhaust fan is reduced;

[0020] After reducing the speed of the exhaust fan, the step of obtaining air quality parameters is performed.

[0021] In one embodiment, after the step of obtaining the condensation temperature of the first heat exchange system, the method further includes:

[0022] When the condensation temperature is greater than or equal to a preset temperature threshold, the step of obtaining air quality parameters is executed.

[0023] In one embodiment, after the step of obtaining air quality parameters, the method further includes:

[0024] Obtain the temperature and humidity corresponding to the fresh air device;

[0025] When the temperature and / or humidity meet the preset temperature and humidity judgment conditions, and the air quality parameters meet the preset quality conditions, the speed of the fresh air fan is reduced.

[0026] In one embodiment, after the step of obtaining air quality parameters, the method further includes:

[0027] When the air quality parameter does not meet the preset quality conditions, the relationship between the air quality parameter and the target quality parameter is determined, and the preset quality conditions include the target quality parameter.

[0028] The target control parameters are determined based on the relationship values;

[0029] The operation of the fresh air equipment is controlled according to the target control parameters.

[0030] In one embodiment, the step of reducing the first operating frequency of the first compressor includes:

[0031] Determine the difference between the first operating frequency and the first frequency threshold;

[0032] The amount of reduction in the first operating frequency is determined based on the difference, and the first operating frequency is updated based on the amount of reduction.

[0033] 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.

[0034] 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.

[0035] This invention provides a control method, a fresh air device, and a storage medium for a fresh air system. After entering silent mode, air quality parameters are acquired. When the air quality parameters meet preset quality conditions, the rotational speed of the fresh air fan is reduced. By reducing the fan speed while ensuring air quality, the noise generated by the fresh air fan is reduced, thereby lowering the noise level of the fresh air system and improving the user experience. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the fresh air equipment according to an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the structure of the fresh air equipment according to an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of the structure of the fresh air equipment according to an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of the hardware structure of the fresh air equipment involved in an embodiment of the present invention;

[0040] Figure 5 This is a flowchart illustrating the first embodiment of the control method for the fresh air device of the present invention;

[0041] Figure 6 This is a flowchart illustrating a second embodiment of the control method for the fresh air device of the present invention;

[0042] Figure 7 This is a flowchart illustrating a third embodiment of the control method for the fresh air device of the present invention;

[0043] Figure 8 This is a flowchart illustrating the fourth embodiment of the control method for the fresh air device of the present invention.

[0044] label name label name 10 Exhaust duct 11 Exhaust fan 20 Fresh air duct 21 Fresh air fan 31 First heat exchanger 32 Second heat exchanger 33 Throttling components 34 Four-way valve 35 First compressor 41 Third heat exchanger 42 Fourth heat exchanger 43 Throttling components 44 Four-way valve 45 Second compressor 46 outdoor fan 50 Humidifier

[0045] 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

[0046] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0047] The main solution of this invention is: after entering silent mode, obtain air quality parameters; when the air quality parameters meet the preset quality conditions, reduce the speed of the fresh air fan.

[0048] While ensuring air quality, reducing the speed of the fresh air fan reduces the noise generated by the fresh air fan, thereby reducing the noise of the fresh air equipment and improving the user experience.

[0049] Reference Figure 1 , Figure 1 The fresh air device of the present invention includes: a fresh air duct 10; a 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 and the second heat exchanger 32 are located in the fresh air duct 10 and are both fresh air heat exchangers; a second heat exchange system, the second heat exchange system including a third heat exchanger 41 and a fourth heat exchanger 42, wherein the third heat exchanger 41 is located in the fresh air duct 10 and is a fresh air heat exchanger, the third heat exchanger 41 is located upstream of the fresh air duct 10 relative to the second heat exchanger 32, and the fourth heat exchanger 42 is located outdoors.

[0050] Optionally, refer to Figure 2 or Figure 3The fresh air equipment includes an exhaust duct 20 and a first heat exchange system, which includes a first heat exchanger 31 and a second heat exchanger 32. The first heat exchanger 31 is located in the exhaust duct 20 and serves as the exhaust heat exchanger, while the second heat exchanger 32 is located in the fresh air duct 10.

[0051] Optionally, a fresh air fan 11 is provided at one end of the fresh air duct 10, and a ventilation fan 21 is provided at one end of the exhaust duct 20.

[0052] Optionally, refer to Figure 2 The fresh air duct 10 is equipped with a humidifier 50.

[0053] Optionally, the fresh air equipment includes a first heat exchange system, which includes a first compressor and a first heat exchange module. Both the first compressor 35 and the first heat exchange module of the first heat exchange system are disposed within the fresh air duct 10. Optionally, the first heat exchange module includes a second heat exchange module 32.

[0054] Optionally, the fresh air equipment includes a first heat exchange system and a second heat exchange system. The first heat exchange system includes a first compressor 35 and a first heat exchange module, and the second heat exchange system includes a second compressor 45 and a second heat exchange module. Both the first heat exchange module and the second heat exchange module are disposed within the fresh air duct 10. Optionally, the second heat exchange module includes a third heat exchanger 41.

[0055] During the operation of the fresh air system, in cooling mode, the refrigerant circulation path of the first heat exchange system is as follows: first compressor 35, four-way valve 34, first heat exchanger 31, throttling device 33, second heat exchanger 32, throttling device 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: first compressor 35, four-way valve 34, second heat exchanger 32, throttling device 33, second heat exchanger 32, throttling device 33, first heat exchanger 31, four-way valve 34, and finally back to compressor 35.

[0056] In cooling mode, the refrigerant circulation path of the second heat exchange system is: second compressor 45, four-way valve 44, fourth heat exchanger 42, throttling device 43, third heat exchanger 41, four-way valve 44, and finally back to compressor 45. In heating mode, the refrigerant circulation path of the second heat exchange system is: second compressor 45, four-way valve 44, third heat exchanger 41, throttling device 43, fourth heat exchanger 42, four-way valve 44, and finally back to compressor 45.

[0057] Optionally, the area of ​​the fourth heat exchanger 42 is less than or equal to a preset ratio of the area of ​​the third heat exchanger 41, for example, 50%; and the area of ​​the second heat exchanger 32 is less than or equal to a preset ratio of the area of ​​the first heat exchanger 31, for example, 150%.

[0058] As one solution, fresh air systems can be like... Figure 4 As shown.

[0059] 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.

[0060] 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:

[0061] After entering silent mode, obtain air quality parameters;

[0062] When the air quality parameters meet the preset quality conditions, the speed of the fresh air fan is reduced.

[0063] 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:

[0064] Obtain the first operating frequency of the first compressor;

[0065] When the first operating frequency is greater than the first frequency threshold, the first operating frequency of the first compressor is reduced.

[0066] After reducing the first operating frequency of the first compressor, the current operating frequency of the first compressor is obtained;

[0067] When the current operating frequency is less than the second frequency threshold, the step of obtaining air quality parameters is executed.

[0068] 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:

[0069] Obtain the first operating frequency of the first compressor;

[0070] When the first operating frequency is greater than the first frequency threshold, the first operating frequency of the first compressor is reduced and the second operating frequency of the second compressor is increased.

[0071] After reducing the first operating frequency of the first compressor, the current operating frequency of the first compressor is obtained;

[0072] When the current operating frequency is less than the second frequency threshold, the step of obtaining air quality parameters is executed.

[0073] 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:

[0074] When the current operating frequency is less than the second frequency threshold, the condensation temperature of the first heat exchange system is obtained;

[0075] When the condensation temperature is lower than the preset temperature threshold, the speed of the exhaust fan is reduced;

[0076] After reducing the speed of the exhaust fan, the step of obtaining air quality parameters is performed.

[0077] 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:

[0078] When the condensation temperature is greater than or equal to a preset temperature threshold, the step of obtaining air quality parameters is executed.

[0079] 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:

[0080] Obtain the temperature and humidity corresponding to the fresh air device;

[0081] When the temperature and / or humidity meet the preset temperature and humidity judgment conditions, and the air quality parameters meet the preset quality conditions, the speed of the fresh air fan is reduced.

[0082] 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:

[0083] When the air quality parameter does not meet the preset quality conditions, the relationship between the air quality parameter and the target quality parameter is determined, and the preset quality conditions include the target quality parameter.

[0084] The target control parameters are determined based on the relationship value, and the target control parameters include the operating frequency of the first compressor;

[0085] The operation of the fresh air equipment is controlled according to the target control parameters.

[0086] 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:

[0087] Determine the difference between the first operating frequency and the first frequency threshold;

[0088] The amount of reduction in the first operating frequency is determined based on the difference, and the first operating frequency is updated based on the amount of reduction.

[0089] 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.

[0090] 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:

[0091] Step S10: After entering silent mode, obtain air quality parameters;

[0092] Alternatively, the fresh air equipment can be an air conditioner or an air treatment device such as an air sterilizer.

[0093] Optionally, upon receiving a mute command, the fresh air system is controlled to enter a mute mode. The mute command is obtained by the user by clicking a preset button or key on the remote control to set the fresh air system to mute mode. Alternatively, the mute command can be obtained by the user by clicking a preset button or key on a smart device, which is connected to the fresh air system via a network.

[0094] Optionally, if the temperature and humidity in the working space of the fresh air equipment meet the temperature and humidity judgment conditions, the fresh air equipment can be controlled to enter silent mode.

[0095] Optionally, when the air quality parameters within the working space of the fresh air equipment meet the preset quality conditions, the fresh air equipment is controlled to enter silent mode.

[0096] Optionally, after the fresh air equipment has been running for a preset period of time, the fresh air equipment can be controlled to enter silent mode.

[0097] The system acquires air quality parameters in the operating space of the fresh air system. Optionally, these air quality parameters include at least one of the following: carbon dioxide (CO2) concentration, PM2.5 concentration, TVOC (Total Volatile Organic Compounds) concentration, and CHO (Chocolate) concentration. Optionally, when the CO2 concentration is less than or equal to a first concentration threshold, the PM2.5 concentration is less than or equal to a second concentration threshold, the TVOC concentration is less than or equal to a third concentration threshold, and the CHO concentration is less than or equal to a fourth concentration threshold, the air quality parameters are determined to meet preset quality conditions. For example, if the CO2 concentration is ≤1500ppm; PM2.5 concentration is ≤300μg / m3; TVOC concentration is ≤0.6mg / m3; and CHO concentration is ≤0.6mg / m3, the air quality parameters are determined to meet preset quality conditions.

[0098] Optionally, after step S10, the temperature and humidity corresponding to the fresh air device are obtained; when the temperature and / or humidity meet preset temperature and humidity judgment conditions, and the air quality parameters meet preset quality conditions, the speed of the fresh air fan is reduced. Optionally, when the temperature reaches a preset target temperature threshold and the humidity reaches a preset target humidity threshold, it is determined that the temperature and / or humidity meet the preset temperature and humidity judgment conditions. When the temperature does not reach the preset target temperature threshold, or the humidity does not reach the preset target humidity threshold, it is determined that the temperature and / or humidity do not meet the preset temperature and humidity judgment conditions.

[0099] Optionally, when the fresh air device is operating in cooling mode, the temperature and humidity judgment conditions include a target temperature threshold and a target humidity threshold d1. When the temperature detected by the fresh air device is greater than the target temperature threshold T1, or the moisture content is greater than the target humidity threshold d1, it is determined that the temperature and / or moisture content detected by the fresh air device meet the temperature and humidity judgment conditions. When the temperature detected by the fresh air device is less than or equal to the target temperature threshold T1, and the moisture content is less than or equal to the target humidity threshold d1, it is determined that the temperature and / or moisture content detected by the fresh air device does not meet the temperature and humidity judgment conditions.

[0100] Optionally, when the fresh air device is operating in heating mode, the temperature and humidity judgment conditions include the target temperature threshold T2 and the target humidity threshold d2. When the temperature detected by the fresh air device is less than the target temperature threshold T2, or the moisture content is less than the target humidity threshold d2, it is determined that the temperature and / or moisture content detected by the fresh air device meet the temperature and humidity judgment conditions. When the temperature detected by the fresh air device is greater than or equal to the target temperature threshold T2, and the moisture content is greater than or equal to the target humidity threshold d2, it is determined that the temperature and / or moisture content detected by the fresh air device does not meet the temperature and humidity judgment conditions.

[0101] Optionally, the temperature detected by the fresh air device is the fresh air temperature, room temperature, or outlet air temperature, etc., where the temperature condition corresponding to the temperature is the fresh air temperature threshold, room temperature threshold, or outlet air temperature threshold. For example, 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 room temperature threshold T1c ∈ [15,32]℃, and in heating mode, the room temperature threshold T1h ∈ [12,32]℃; in cooling mode, the outlet air temperature threshold Toc ∈ [5,32]℃, and in heating mode, the outlet air temperature threshold Toh ∈ [15,60]℃.

[0102] The humidity content detected by the fresh air system can be the room humidity content, the outlet air humidity content, or the fresh air humidity content, etc., where the humidity conditions corresponding to the humidity content are the room humidity content threshold, the outlet air humidity content threshold, or the fresh air humidity content threshold. For example, the room humidity content threshold is [5,14] g / kg, the outlet air humidity content threshold is [5,16] g / kg, or the fresh air humidity content threshold is [5,18] g / kg.

[0103] Step S20: When the air quality parameters meet the preset quality conditions, reduce the speed of the fresh air fan.

[0104] Specifically, when the air quality parameters meet the preset quality conditions, the speed of the fresh air fan is reduced, the noise generated by the fresh air fan is reduced, and thus the overall noise of the fresh air equipment is reduced.

[0105] Optionally, when the air quality parameter does not meet the preset quality conditions, a relationship value between the air quality parameter and the target quality parameter is determined, wherein the preset quality conditions include the target quality parameter; optionally, the relationship value is a ratio, difference, product, or sum, etc. Optionally, a first ratio of CO2 concentration C1 to target CO2 concentration C2 is determined, for example, the first ratio is C1 / C2; optionally, a second ratio of PM2.5 concentration P1 to target PM2.5 concentration P2 is determined, for example, the second ratio is P1 / P2. A target control parameter is determined based on the relationship value, wherein the target control parameter includes the fresh air volume and / or fresh air ratio supplied to the room by the fresh air device; the operation of the fresh air device is controlled based on the target control parameter. Optionally, when the relationship value is within a first preset range, the fresh air volume and / or fresh air ratio is determined to be within a first threshold; when the relationship value is within a second preset range, the fresh air volume and / or fresh air ratio is determined to be within a second threshold. In this embodiment, the fresh air equipment includes a fresh air duct, an exhaust air duct, a fresh air valve, an exhaust air valve, and a bypass valve that are isolated from each other. The fresh air valve is located at one end of the fresh air duct (e.g., the fresh air inlet), and the exhaust air valve is located at one end of the exhaust air duct (e.g., the exhaust outlet). The bypass valve connects the fresh air duct and the exhaust air duct. The opening degree of at least one of the fresh air valve, exhaust air valve, and bypass valve can be adjusted. The proportion and volume of fresh air can be adjusted by adjusting at least one of the fresh air valve, exhaust air valve, and bypass valve.

[0106] In the technical solution of this embodiment, while ensuring air quality, the speed of the fresh air fan is reduced, thereby reducing the noise generated by the fresh air fan, and thus reducing the noise of the fresh air equipment and improving the user experience.

[0107] 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, before obtaining the air quality parameters in step S10, the method further includes:

[0108] Step S30: Obtain the first operating frequency of the first compressor;

[0109] Step S40: When the first operating frequency is greater than the first frequency threshold, reduce the first operating frequency of the first compressor;

[0110] Step S50: After reducing the first operating frequency of the first compressor, obtain the current operating frequency of the first compressor;

[0111] Step S60: When the current operating frequency is less than the second frequency threshold, the step of obtaining air quality parameters is executed.

[0112] Optionally, the fresh air equipment includes a first heat exchange system, which includes a first compressor and a first heat exchange module. Both the first compressor and the first heat exchange module are located in the fresh air duct. Since the first compressor is located in the fresh air duct, reducing the operating frequency of the first compressor can reduce the noise of the fresh air equipment.

[0113] After entering silent mode, the first operating frequency of the first compressor is determined. If the first operating frequency is greater than a first frequency threshold, it indicates that the first compressor's operating frequency is relatively high, easily perceived by the user, and the fresh air fan and exhaust fan will also generate noise when rotating. The higher the fan speed, the greater the noise, resulting in a poor user experience; therefore, adjustment is necessary. When the first operating frequency is less than or equal to the first frequency threshold, it indicates that the first compressor's operating frequency is relatively low, less likely to affect the user; therefore, the frequency of the first compressor or the fan speed does not need to be changed. For example, the first frequency threshold is less than or equal to 50Hz.

[0114] When the first operating frequency is greater than the first frequency threshold, the first operating frequency of the first compressor is reduced; after reducing the first operating frequency of the first compressor, the current operating frequency of the first compressor is obtained; when the current operating frequency is less than the second frequency threshold, the air quality parameters are obtained; when the air quality parameters meet the preset quality conditions, the speed of the fresh air fan is reduced to reduce the noise generated by the fresh air fan in the fresh air equipment. Under the premise of ensuring air quality, the noise generated by the fresh air equipment is significantly reduced, ensuring that the capacity of the fresh air equipment does not fluctuate significantly when reducing noise, and achieving quiet operation under the premise of reliability and comfort.

[0115] The first operating frequency of the first compressor is reduced. Optionally, the difference between the first operating frequency and a first frequency threshold is determined; the amount of reduction of the first operating frequency is determined based on the difference; and the first operating frequency is updated based on the amount of reduction.

[0116] In the technical solution of this embodiment, under the premise of ensuring air quality and the operating effect of the fresh air equipment, the first operating frequency of the first compressor and the speed of the fresh air fan are reduced, thereby reducing the noise generated by the first compressor and the fresh air fan, and thus reducing the noise of the fresh air equipment and improving the user experience.

[0117] Reference Figure 7 , Figure 7 In a third embodiment of the control method for the fresh air device of the present invention, based on the first or second embodiment, before obtaining the air quality parameters in step S10, the method further includes:

[0118] Step S70: Obtain the first operating frequency of the first compressor;

[0119] Step S80: When the first operating frequency is greater than the first frequency threshold, reduce the first operating frequency of the first compressor and increase the second operating frequency of the second compressor;

[0120] Step S90: After reducing the first operating frequency of the first compressor, obtain the current operating frequency of the first compressor;

[0121] Step S100: When the current operating frequency is less than the second frequency threshold, the step of obtaining air quality parameters is executed.

[0122] Optionally, the fresh air equipment includes a first heat exchange system and a second heat exchange system. The first heat exchange system includes a first compressor and a first heat exchange module, and the second heat exchange system includes a second compressor and a second heat exchange module. Both the first and second heat exchange modules are disposed within the fresh air duct. The first compressor is disposed within the fresh air duct, and the second compressor is disposed outside the fresh air duct; specifically, the second compressor can be disposed outdoors. Since the first compressor is disposed within the fresh air duct, reducing the operating frequency of the first compressor can reduce the noise of the fresh air equipment.

[0123] After entering silent mode, the first operating frequency of the first compressor is determined. If the first operating frequency is greater than a first frequency threshold, it indicates that the first compressor's operating frequency is relatively high, easily perceived by the user, and the fresh air fan and exhaust fan will also generate noise during rotation. The higher the fan speed, the greater the noise, resulting in a poor user experience; therefore, adjustments are necessary. When the first operating frequency is less than or equal to the first frequency threshold, it indicates that the first compressor's operating frequency is relatively low, less likely to affect the user; therefore, the frequency of the first compressor or the fan speed does not need to be changed.

[0124] When the first operating frequency is greater than the first frequency threshold, the first operating frequency of the first compressor is reduced, and the second operating frequency of the second compressor is increased. The first compressor's noise is easily perceived by the user during operation, while the second compressor's noise is less noticeable due to its lower second operating frequency or lower noise level. Therefore, when the first operating frequency is greater than the first frequency threshold, reducing the first operating frequency of the first compressor and increasing the second operating frequency of the second compressor ensures that the heat exchange capacity of the fresh air system within the fresh air duct remains unchanged or changes only slightly, while also reducing the noise of the compressors in the fresh air system. For example, the first frequency threshold is less than or equal to 50Hz, and the second frequency threshold is greater than or equal to 20Hz.

[0125] Optionally, the first operating frequency of the first compressor is reduced; optionally, the difference between the first operating frequency and a first frequency threshold is determined; the amount of reduction of the first operating frequency is determined based on the difference; and the first operating frequency is updated based on the amount of reduction.

[0126] After reducing the first operating frequency of the first compressor, the current operating frequency of the first compressor is obtained; when the current operating frequency is less than the second frequency threshold, the air quality parameters are obtained; when the air quality parameters meet the preset quality conditions, the speed of the fresh air fan is reduced.

[0127] In the technical solution of this embodiment, reducing the first operating frequency of the first compressor and the speed of the fresh air fan reduces the noise generated by the first compressor and the fresh air fan, thereby reducing the noise of the fresh air equipment. Increasing the operating frequency of the second compressor ensures air quality and the operating effect (cooling, heating or dehumidification effect) of the fresh air equipment, and improves the user experience.

[0128] Reference Figure 8 , Figure 8 In 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, before obtaining the air quality parameters in step S10, the method further includes:

[0129] Step S110: When the current operating frequency is less than the second frequency threshold, obtain the condensation temperature of the first heat exchange system;

[0130] Step S120: When the condensation temperature is lower than the preset temperature threshold, reduce the speed of the exhaust fan;

[0131] Step S130: After reducing the speed of the exhaust fan, the step of obtaining air quality parameters is performed.

[0132] Optionally, the first heat exchange system also includes an exhaust heat exchanger. The condensing temperature of the first heat exchange system can be understood as the condensing temperature of the exhaust heat exchanger when it acts as a condenser. Both the exhaust heat exchanger and the exhaust fan are installed in the exhaust duct, and the first compressor is installed in either the exhaust duct or the fresh air duct.

[0133] When the current operating frequency is less than the second frequency threshold, the condensing temperature of the first heat exchange system is obtained. When the condensing temperature is less than the preset temperature threshold, the speed of the exhaust fan is reduced, thereby reducing the noise of the exhaust fan in the fresh air equipment, and further reducing the noise in the fresh air equipment. For example, f1≤f2. Optionally, the condensing temperature threshold tc in the first heat exchange system is [20,70]℃. After reducing the speed of the exhaust fan, the air quality parameters are obtained. When the air quality parameters meet the preset quality conditions, the speed of the fresh air fan is reduced, thereby reducing the noise of the fresh air fan in the fresh air equipment, and further reducing the noise in the fresh air equipment. This ensures that the capacity of the fresh air equipment does not fluctuate significantly when reducing noise, achieving quiet operation while meeting the requirements of reliability and comfort.

[0134] Optionally, when the condensation temperature is greater than or equal to a preset temperature threshold, air quality parameters are obtained; when the air quality parameters meet the preset quality conditions, the speed of the fresh air fan is reduced, thereby reducing the noise of the fresh air fan in the fresh air equipment, further reducing the noise in the fresh air equipment, ensuring that the capacity of the fresh air equipment does not fluctuate significantly when reducing noise, and achieving quiet operation under the premise of reliability and comfort.

[0135] In the technical solution of this embodiment, reducing the first operating frequency of the first compressor and the speed of the fresh air fan reduces the noise generated by the first compressor and the fresh air fan, thereby reducing the noise of the fresh air equipment. Increasing the operating frequency of the second compressor and making the condensation temperature lower ensures air quality and the operating effect of the fresh air equipment, and improves the user experience.

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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 duct and a fresh air fan disposed within the fresh air duct. The fresh air equipment includes a first heat exchange system and a second heat exchange system. The first heat exchange system includes a first compressor and a first heat exchange module. The second heat exchange system includes a second compressor and a second heat exchange module. Both the first and second heat exchange modules are disposed within the fresh air duct. The fresh air equipment includes an exhaust fan. The first heat exchange system further includes an exhaust heat exchanger. Both the exhaust heat exchanger and the exhaust fan are disposed within the exhaust duct. The first compressor is disposed within either the exhaust duct or the fresh air duct. The method includes: After entering silent mode, the first operating frequency of the first compressor is obtained; When the first operating frequency is greater than the first frequency threshold, the first operating frequency of the first compressor is reduced and the second operating frequency of the second compressor is increased. After reducing the first operating frequency of the first compressor, the current operating frequency of the first compressor is obtained; When the current operating frequency is less than the second frequency threshold, the condensation temperature of the first heat exchange system is obtained; When the condensation temperature is lower than the preset temperature threshold, the speed of the exhaust fan is reduced; After reducing the speed of the exhaust fan, the air quality parameters are obtained; When the air quality parameters meet the preset quality conditions, the speed of the fresh air fan is reduced.

2. The control method for the fresh air equipment as described in claim 1, characterized in that, Before acquiring the air quality parameters, the method further includes: Obtain the first operating frequency of the first compressor; When the first operating frequency is greater than the first frequency threshold, the first operating frequency of the first compressor is reduced. After reducing the first operating frequency of the first compressor, the current operating frequency of the first compressor is obtained; When the current operating frequency is less than the second frequency threshold, the step of obtaining air quality parameters is executed.

3. The control method for the fresh air equipment as described in claim 1, characterized in that, Before acquiring the air quality parameters, the method further includes: Obtain the first operating frequency of the first compressor; When the first operating frequency is greater than the first frequency threshold, the first operating frequency of the first compressor is reduced and the second operating frequency of the second compressor is increased. After reducing the first operating frequency of the first compressor, the current operating frequency of the first compressor is obtained; When the current operating frequency is less than the second frequency threshold, the step of obtaining air quality parameters is executed.

4. The control method for the fresh air equipment as described in claim 1, characterized in that, After the step of obtaining the condensation temperature of the first heat exchange system, the method further includes: When the condensation temperature is greater than or equal to a preset temperature threshold, the step of obtaining air quality parameters is executed.

5. The control method for the fresh air equipment as described in claim 1, characterized in that, Following the step of obtaining air quality parameters, the method further includes: Obtain the temperature and humidity corresponding to the fresh air device; When the temperature and / or humidity meet the preset temperature and humidity judgment conditions, and the air quality parameters meet the preset quality conditions, the speed of the fresh air fan is reduced.

6. The control method for the fresh air equipment as described in claim 1, characterized in that, Following the step of obtaining air quality parameters, the method further includes: When the air quality parameter does not meet the preset quality conditions, the relationship between the air quality parameter and the target quality parameter is determined, and the preset quality conditions include the target quality parameter. The target control parameters are determined based on the relationship values; The operation of the fresh air equipment is controlled according to the target control parameters.

7. The control method for the fresh air equipment as described in any one of claims 1-4, characterized in that, The step of reducing the first operating frequency of the first compressor includes: Determine the difference between the first operating frequency and the first frequency threshold; The amount of reduction in the first operating frequency is determined based on the difference, and the first operating frequency is updated based on the amount of reduction.

8. 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 1-7.

9. 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 1-7.

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