Control method, device and equipment of fresh air conditioning system and storage medium

Abstract

The invention belongs to the technical field of air conditioners, and particularly relates to a control method, device and equipment of a fresh air conditioning system and a storage medium. And the working modes of the fresh air conditioning system are determined according to the detected outdoor environment temperature, wherein the modes comprise a fresh air mode, a refrigeration mode or a combination mode. And in the combined mode, the fresh air mode is preferentially adopted for operation, so that outdoor low-temperature air is utilized for refrigeration. And if the fresh air mode cannot independently enable the indoor temperature to reach the target, the fresh air mode is automatically switched to the refrigeration mode. According to the method, by automatically switching the operation mode of the fresh air conditioner, the problem that the energy consumption of an air conditioning system is too high in the cooling process is effectively solved, so that an outdoor natural cold source and the rapid refrigerating capacity of a refrigerating mode are fully utilized, and the technical effects of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The present application belongs to the field of air conditioning technology, and specifically relates to a control method, device, equipment and storage medium for a fresh air air conditioning system. Background Art

[0002] With the continuous development of medical technology, the requirements of medical device clean injection molding workshops in the production process are becoming more and more stringent. These workshops are equipped with high-performance injection molding machines for manufacturing precision medical device parts. When the injection molding machine is working, a lot of heat will be generated due to mechanical operation and plastic melting.

[0003] The existing solution to the large amount of heat generated by the injection molding machine during operation is to lower the indoor temperature through the air conditioning system installed in the workshop, ensuring that the injection molding machine can operate in a stable environment while ensuring the quality of the medical device components produced.

[0004] However, although the existing air-conditioning system can cool down the clean injection molding workshop of medical devices, the selection of fresh air volume is mainly based on meeting the fresh air volume demand of indoor personnel or maintaining the stability of indoor pressure difference. Although this design method ensures the cleanliness and pressure difference stability of the workshop, it often causes the air-conditioning system to consume more energy during the cooling process, resulting in unnecessary energy waste. Summary of the invention

[0005] The present application provides a control method, device, equipment and storage medium for a fresh air air conditioning system, which are used to solve the problem that the air conditioning system needs to consume more energy during the cooling process.

[0006] In a first aspect, the present application provides a control method for a fresh air air conditioning system, comprising:

[0007] Detecting the outdoor ambient temperature, and determining the working mode of the fresh air air conditioning system according to the outdoor ambient temperature, the working mode being a fresh air mode, a cooling mode or a combined mode;

[0008] When the working mode is the combined mode, the fresh air air-conditioning system is controlled to operate in the fresh air mode first. If adjusting the operating parameters of the fresh air air-conditioning system in the fresh air mode cannot make the indoor temperature reach the target temperature, the fresh air air-conditioning system is controlled to operate in the cooling mode.

[0009] Optionally, also include:

[0010] When the working mode is the fresh air mode, the initial opening of the air supply valve is determined according to the indoor pressure, and the operating frequency of the exhaust fan is determined according to the indoor temperature;

[0011] During operation of the fresh air mode, the opening of the air supply valve, the operating frequency of the air supply fan or the opening of the return air valve is adjusted according to the indoor pressure.

[0012] Optionally, if adjusting the operating parameters of the fresh air air conditioning system in the fresh air mode fails to make the indoor temperature reach the target temperature, controlling the fresh air air conditioning system to operate in the cooling mode includes:

[0013] If in the fresh air mode, the opening of the air supply valve reaches the maximum opening and the operating frequency of the exhaust fan reaches the maximum frequency, but the indoor temperature is still higher than the target temperature, the fresh air air-conditioning system is controlled to operate in the cooling mode.

[0014] Optionally, determining the initial opening of the air supply valve according to the indoor pressure, and determining the operating frequency of the exhaust fan according to the indoor temperature, includes:

[0015] If the indoor pressure is within a first preset range, the initial opening of the air supply valve is determined to be a first opening; if the indoor pressure is greater than the first preset range, the initial opening of the air supply valve is determined to be a value greater than the first opening; if the indoor pressure is less than the first preset range, the initial opening of the air supply valve is determined to be a value less than the first opening;

[0016] The operating frequency of the exhaust fan is determined according to the indoor temperature, and the operating frequency of the exhaust fan is positively correlated with the indoor temperature.

[0017] Optionally, adjusting the opening of the air supply valve, the operating frequency of the air supply fan or the opening of the return air valve according to the indoor pressure includes:

[0018] If the indoor pressure is less than a second preset range, increasing the opening of the air supply valve;

[0019] If the indoor pressure is greater than the second preset range, the return air valve is opened, and the opening of the return air valve is adjusted according to the indoor pressure, and the opening of the return air valve is positively correlated with the indoor pressure.

[0020] Optionally, also include:

[0021] When the working mode is the cooling mode, the opening of the air supply valve is adjusted to the minimum opening, the opening of the return air valve is adjusted to the maximum opening, and the exhaust fan is turned off.

[0022] Optionally, determining the working mode of the fresh air air conditioning system according to the outdoor ambient temperature includes:

[0023] When the outdoor ambient temperature is less than or equal to a first temperature threshold, determining that the working mode is the fresh air mode;

[0024] When the outdoor ambient temperature is greater than the first temperature threshold and less than the second temperature threshold, determining that the working mode is the combined mode;

[0025] When the outdoor ambient temperature is greater than or equal to the second temperature threshold, the operating mode is determined to be the cooling mode.

[0026] In a second aspect, the present application provides a control device for a fresh air air conditioning system, comprising:

[0027] A detection module, used for detecting outdoor ambient temperature;

[0028] A determination module, used to determine the working mode of the fresh air air conditioning system according to the outdoor ambient temperature, the working mode being a fresh air mode, a cooling mode or a combination mode;

[0029] A control module, used for controlling the fresh air air conditioning system to operate in the fresh air mode first when the working mode is the combined mode;

[0030] The control module is further used to control the fresh air air conditioning system to operate in the cooling mode when adjusting the operating parameters of the fresh air air conditioning system in the fresh air mode fails to make the indoor temperature reach the target temperature.

[0031] Optionally, the determination module is further used to determine the initial opening of the air supply valve according to the indoor pressure and determine the operating frequency of the exhaust fan according to the indoor temperature when the working mode is the fresh air mode;

[0032] The determination module is further used to adjust the opening of the air supply valve, the operating frequency of the air supply fan or the opening of the return air valve according to the indoor pressure during the operation of the fresh air mode.

[0033] Optionally, the control module is specifically used to control the fresh air air-conditioning system to operate in the cooling mode when, in the fresh air mode, the opening of the air supply valve reaches the maximum opening and the operating frequency of the exhaust fan reaches the maximum frequency, but the indoor temperature is still higher than the target temperature.

[0034] Optionally, the determination module is further configured to determine the initial opening of the air supply valve as a first opening when the indoor pressure is within a first preset range;

[0035] The determination module is further configured to determine the initial opening of the air supply valve to be a value greater than the first opening when the indoor pressure is greater than the first preset range;

[0036] The determination module is further configured to determine the initial opening of the air supply valve to be a value smaller than the first opening when the indoor pressure is smaller than the first preset range;

[0037] The determination module is specifically used to determine the operating frequency of the exhaust fan according to the indoor temperature, and the operating frequency of the exhaust fan is positively correlated with the indoor temperature.

[0038] Optionally, the device further comprises: an enlargement module;

[0039] The increasing module is used to increase the opening of the air supply valve when the indoor pressure is less than a second preset range;

[0040] The device further comprises: an opening module;

[0041] The opening module is used to open the return air valve when the indoor pressure is greater than the second preset range;

[0042] The device further comprises: an adjustment module;

[0043] The adjustment module is used to adjust the opening of the return air valve according to the indoor pressure, and the opening of the return air valve is positively correlated with the indoor pressure.

[0044] Optionally, the adjustment module is further used to adjust the opening of the air supply valve to a minimum opening and the opening of the return air valve to a maximum opening when the working mode is the cooling mode;

[0045] The device further comprises: a closing module;

[0046] The closing module is used to close the exhaust fan.

[0047] Optionally, the determination module is specifically configured to determine that the working mode is the fresh air mode when the outdoor ambient temperature is less than or equal to a first temperature threshold;

[0048] The determination module is specifically configured to determine that the working mode is the combination mode when the outdoor ambient temperature is greater than the first temperature threshold and less than the second temperature threshold;

[0049] The determination module is specifically configured to determine that the operating mode is the cooling mode when the outdoor ambient temperature is greater than or equal to the second temperature threshold.

[0050] In a third aspect, the present application provides a control device for a fresh air air conditioning system, comprising:

[0051] Memory;

[0052] processor;

[0053] Wherein, the memory stores computer-executable instructions;

[0054] The processor executes the computer-executable instructions stored in the memory to implement the control method of the fresh air air-conditioning system as described in the first aspect and various possible implementation methods of the first aspect.

[0055] In a fourth aspect, the present application provides a computer storage medium having computer execution instructions stored thereon, wherein the computer execution instructions are executed by a processor to implement the control method of the fresh air air conditioning system as described in the first aspect and various possible implementation methods of the first aspect.

[0056] In a fifth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the control method of the fresh air air-conditioning system as described above.

[0057] The control method of the fresh air air conditioning system provided in the present application determines the working mode of the fresh air air conditioning system according to the detected outdoor ambient temperature, and these modes include fresh air mode, cooling mode or combination mode. In the combination mode, the fresh air mode is preferentially used to achieve cooling using the lower temperature outdoor air. If the fresh air mode alone cannot make the indoor temperature reach the target, it will automatically switch to the cooling mode. This method effectively solves the problem of excessive energy consumption of the air conditioning system during the cooling process by automatically switching the operating mode of the fresh air air conditioner, thereby making full use of the outdoor natural cold source and the rapid cooling capacity of the cooling mode, and achieving the technical effect of energy saving and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0059] Figure 1 The process of the control method of the fresh air air conditioning system provided in this application Figure 1 ;

[0060] Figure 2 The process of the control method of the fresh air air conditioning system provided in this application Figure 2 ;

[0061] Figure 3 It is a structural schematic diagram of a control device for a fresh air air conditioning system provided by the present application;

[0062] Figure 4 It is a structural schematic diagram of the control device of the fresh air air conditioning system provided in this application.

[0063] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0065] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in sequences other than those illustrated or described herein, for example.

[0066] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0067] As the field of medical technology continues to advance, the production standards of medical device clean injection molding workshops are becoming more and more stringent. These workshops are equipped with injection molding machines that are specifically designed to produce high-precision medical device components. During the operation of injection molding machines, a large amount of heat is released due to internal mechanical activities and heating and melting of plastic materials.

[0068] The existing solution to the large amount of heat generated by the injection molding machine during operation is to lower the indoor temperature through the air conditioning system installed in the workshop, ensuring that the injection molding machine can operate in a stable environment while ensuring the quality of the medical device components produced.

[0069] However, although the existing air-conditioning system can cool down the clean injection molding workshop of medical devices, the selection of fresh air volume is mainly based on meeting the fresh air volume demand of indoor personnel or maintaining the stability of indoor pressure difference. Although this design method ensures the cleanliness and pressure difference stability of the workshop, it often causes the air-conditioning system to consume more energy during the cooling process, resulting in unnecessary energy waste.

[0070] In view of the above problems, the present application provides a control method for a fresh air air conditioning system. The working mode of the fresh air air conditioning system is determined according to the detected outdoor ambient temperature, and these modes include fresh air mode, cooling mode or combination mode. In the combination mode, the fresh air mode is preferentially adopted to achieve cooling using the lower temperature outdoor air. If the fresh air mode alone cannot make the indoor temperature reach the target, it will automatically switch to the cooling mode. This method effectively solves the problem of excessive energy consumption of the air conditioning system during the cooling process by automatically switching the operating mode of the fresh air air conditioner, thereby making full use of the outdoor natural cold source and the rapid cooling capacity of the cooling mode, and achieving the technical effect of energy saving and emission reduction.

[0071] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0072] Figure 1 The process of the control method of the fresh air air conditioning system provided in this embodiment is Figure 1 .like Figure 1 As shown, the control method of the fresh air air conditioning system provided in this embodiment includes:

[0073] S101: Detecting the outdoor ambient temperature, and determining the working mode of the fresh air air conditioning system according to the outdoor ambient temperature, the working mode being a fresh air mode, a cooling mode or a combined mode.

[0074] The outdoor ambient temperature is used to indicate the outdoor temperature of the area where the fresh air air conditioning system is located. For example, if the outdoor ambient temperature is minus 5 degrees Celsius, it means that the outdoor temperature of the area where the fresh air air conditioning system is located is minus 5 degrees Celsius.

[0075] The fresh air mode refers to the introduction of outdoor air, which is transmitted through the air supply duct and directly sent into the room, so as to utilize the outdoor natural cooling source to cool the room.

[0076] The cooling mode means that the indoor heat is absorbed and discharged to the outside through the circulation of refrigerant, thereby lowering the indoor temperature.

[0077] The combined mode refers to the combination of the fresh air mode and the cooling mode to jointly cool down the indoor temperature.

[0078] The purpose of this step is to dynamically adjust the working mode of the fresh air air conditioning system according to the detected outdoor ambient temperature.

[0079] It is understandable that different outdoor ambient temperatures correspond to different working modes of the fresh air air conditioning system. For example, when the outdoor ambient temperature is too low, select the fresh air mode; when the outdoor ambient temperature is too high, select the cooling mode; or when the outdoor ambient temperature is moderate, select the combination mode.

[0080] Therefore, by real-time detection of the outdoor ambient temperature and dynamically adjusting the working mode, not only can the energy consumption of the fresh air air-conditioning system be effectively reduced, but the indoor temperature can also be kept stable to ensure a comfortable indoor environment.

[0081] The outdoor ambient temperature in this step may be detected by, for example, an outdoor temperature sensor. This application does not impose any special restrictions on this.

[0082] S102: When the working mode is the combined mode, the fresh air air conditioning system is controlled to operate in the fresh air mode first. If adjusting the operating parameters of the fresh air air conditioning system in the fresh air mode cannot make the indoor temperature reach the target temperature, the fresh air air conditioning system is controlled to operate in the cooling mode.

[0083] The target temperature may be, for example, 24 degrees Celsius or 21 degrees Celsius, which is not particularly limited in the present application.

[0084] The purpose of this step is to ensure that the indoor temperature can quickly and stably reach the comfortable range set by the user.

[0085] It is understandable that the fresh air mode can introduce outdoor air and use natural cooling sources to lower the indoor temperature, which helps reduce the energy consumption of the fresh air air conditioning system. However, if the indoor temperature cannot be adjusted to the target temperature set by the user by relying solely on the fresh air mode, it means that the fresh air mode alone cannot meet the indoor temperature requirements.

[0086] At this time, in order to lower the indoor temperature more quickly and stably, the fresh air air-conditioning system will run the cooling mode, and make the cooling mode work together with the fresh air mode to meet the temperature requirements while further reducing the energy consumption of the fresh air air-conditioning system.

[0087] The control method of the fresh air air conditioning system provided in this embodiment is that the fresh air air conditioning system will first detect the outdoor ambient temperature, and intelligently select its working mode according to the outdoor ambient temperature, which modes include fresh air mode, cooling mode or a combination mode combining the two. When the fresh air air conditioning system operates in the combination mode, the fresh air mode will be started first, and the indoor temperature will be tried to be lowered by introducing outdoor fresh air and using natural cold sources. However, if the indoor temperature still fails to reach the preset target temperature after trying to adjust the operating parameters in the fresh air mode, it will automatically switch to the cooling mode. This method not only realizes the precise control of the indoor environment, but also significantly reduces the energy consumption of the air conditioning system during the cooling process, effectively solving the problem of excessive energy consumption of the air conditioner during operation.

[0088] Figure 2 The process of the control method of the fresh air air conditioning system provided in this embodiment is Figure 2 .like Figure 2 This embodiment is Figure 1 Based on the embodiment, the implementation process of controlling the fresh air air conditioning system is described in detail. The control method of the fresh air air conditioning system provided in this embodiment includes:

[0089] S201: Detect the outdoor ambient temperature and determine the working mode of the fresh air air conditioning system according to the outdoor ambient temperature. The working mode is a fresh air mode, a cooling mode or a combination mode.

[0090] Optionally, the present application provides a possible method for determining the working mode of the fresh air air conditioning system according to the outdoor ambient temperature, including:

[0091] The first step is to determine that the working mode is the fresh air mode when the outdoor ambient temperature is less than or equal to the first temperature threshold.

[0092] The first temperature threshold may be, for example, 10 degrees Celsius or 5 degrees Celsius, which is not particularly limited in the present application.

[0093] The purpose of judging whether the outdoor ambient temperature is less than or equal to the first temperature threshold is to determine whether the outdoor temperature of the area where the fresh air air conditioning system is located is too low.

[0094] If the outdoor ambient temperature is less than or equal to the first temperature threshold, it indicates that the outdoor temperature of the area where the fresh air air conditioning system is located is too low. At this time, it can be determined that the working mode of the fresh air air conditioning system is the fresh air mode.

[0095] It can be understood that the fresh air mode is to introduce outdoor air and directly send the outdoor air into the room through the air supply duct to achieve the use of outdoor natural cold source to cool the room. Therefore, when it is determined that the outdoor ambient temperature is less than or equal to the first temperature threshold, it means that the outdoor temperature of the area where the fresh air air conditioning system is located is too low, which further indicates that the wind temperature is low. In order to save energy consumption of the fresh air air conditioning, it is necessary to determine the fresh air mode as the working mode of the fresh air air conditioning system.

[0096] For example, assuming that the first temperature threshold is 10 degrees Celsius, it is known that the outdoor ambient temperature in the area where the fresh air air conditioning system is located is minus 5 degrees Celsius. Based on the above information, it can be determined that the outdoor ambient temperature is less than the first temperature threshold, and further the fresh air mode can be determined as the working mode of the fresh air air conditioning system.

[0097] In the second step, when the outdoor ambient temperature is greater than the first temperature threshold and less than the second temperature threshold, determining that the working mode is the combined mode.

[0098] The second temperature threshold may be, for example, 20 degrees Celsius or 18 degrees Celsius, which is not particularly limited in the present application.

[0099] When the outdoor ambient temperature is greater than the first temperature threshold, the purpose of judging whether the outdoor ambient temperature is less than the second temperature threshold is to determine whether the outdoor temperature of the area where the fresh air air conditioning system is located is too high.

[0100] If the outdoor ambient temperature is greater than the first temperature threshold and the outdoor ambient temperature is less than the second temperature threshold, it indicates that the outdoor temperature in the area where the fresh air air conditioning system is located is moderate. At this time, it can be determined that the working mode of the fresh air air conditioning system is the combined mode.

[0101] It can be understood that the combination mode is a working mode achieved by combining the fresh air mode and the cooling mode. Among them, the fresh air mode is a working mode that introduces outdoor fresh air and uses outdoor fresh air to cool the indoor temperature. The cooling mode is another working mode that uses refrigerant to reduce the indoor temperature.

[0102] Therefore, when it is determined that the outdoor temperature in the area where the fresh air air-conditioning system is located is moderate, in order to save air-conditioning energy consumption while lowering the indoor temperature, the combination mode can be set as the working mode of the fresh air air-conditioning system, so that the indoor temperature can be lowered by using the cooling mode while using the outdoor natural cold air to exchange heat with the indoor temperature.

[0103] For example, assuming that the first temperature threshold is 10 degrees Celsius and the second temperature threshold is 18 degrees Celsius. It is known that the outdoor ambient temperature of the area where the fresh air air conditioning system is located is 15 degrees Celsius. Based on the above information, it can be determined that the outdoor ambient temperature is greater than the first temperature threshold and the outdoor ambient temperature is less than the second temperature threshold, and the combination mode can be further determined as the working mode of the fresh air air conditioning system.

[0104] In the third step, when the outdoor ambient temperature is greater than or equal to the second temperature threshold, determining that the working mode is the cooling mode.

[0105] The second temperature threshold may be, for example, 18 degrees Celsius or 15 degrees Celsius, which is not particularly limited in the present application.

[0106] If the outdoor ambient temperature is greater than or equal to the second temperature threshold, it indicates that the outdoor temperature of the area where the fresh air air conditioning system is located is too high. At this time, it can be determined that the working mode of the fresh air air conditioning system is the cooling mode.

[0107] It can be understood that the cooling mode absorbs indoor heat and discharges it to the outside through the circulation of refrigerant, thereby reducing the indoor temperature. Therefore, when it is determined that the outdoor ambient temperature is greater than or equal to the second temperature threshold, it means that the outdoor temperature in the area where the fresh air air conditioning system is located is too high, and further it can be said that the wind temperature is too high. In order to quickly cool down the room and reach the target temperature set by the user, the cooling mode needs to be determined as the working mode of the fresh air air conditioning system.

[0108] For example, assuming that the second temperature threshold is 18 degrees Celsius, it is known that the outdoor ambient temperature of the area where the fresh air air conditioning system is located is 28 degrees Celsius. Based on the above information, it can be determined that the outdoor ambient temperature is greater than the second temperature threshold, and further the cooling mode can be determined as the working mode of the fresh air air conditioning system.

[0109] S202: When the working mode is the combined mode, the fresh air air conditioning system is controlled to operate in the fresh air mode first.

[0110] The explanation of step S202 refers to the explanation of the above embodiment and will not be repeated here.

[0111] S203: When the working mode is the fresh air mode, the initial opening of the air supply valve is determined according to the indoor pressure, and the operating frequency of the exhaust fan is determined according to the indoor temperature.

[0112] Among them, indoor pressure refers to the size of the air pressure in the indoor space. The unit of indoor pressure is kilopascals (kPa). For example, if the indoor pressure is 10 kPa, it means that the current indoor space pressure is 10 kPa.

[0113] Indoor temperature refers to the air temperature in the current environment of the indoor space. For example, if the indoor temperature is 17 degrees Celsius, it means that the current temperature of the indoor space is 17 degrees Celsius.

[0114] The purpose of determining the initial opening of the air supply valve according to the indoor pressure in this step is to ensure that fresh air enters the room at an appropriate speed and volume, which will not cause an imbalance in the indoor pressure and can effectively meet the fresh air demand.

[0115] It is understandable that when the fresh air air conditioning system is operating in the fresh air mode, if the amount of fresh air introduced is too much, the indoor pressure may increase; if the amount of fresh air is too little, the indoor air flow and temperature regulation effects may be affected.

[0116] Therefore, by determining the initial opening of the air supply valve according to the indoor pressure changes, the fresh air volume and indoor pressure can be balanced in real time to avoid excessive or low pressure.

[0117] The purpose of this step of determining the operating frequency of the exhaust fan according to the indoor temperature is to prevent the occurrence of negative pressure while ensuring the stability of the indoor temperature.

[0118] It is understandable that, first of all, in the fresh air air conditioning system, the air supply valve is responsible for introducing processed fresh air from outside into the room to improve the indoor air quality and reduce the indoor temperature. The exhaust fan is responsible for discharging the accumulated heat, moisture and pollutants in the room to the outside to balance the indoor pressure and keep the indoor air fresh. Therefore, the air supply valve and the exhaust fan play a complementary role, which can keep the indoor temperature relatively stable and the indoor pressure within a relatively stable range.

[0119] Secondly, indoor temperature directly affects the demand for air circulation and air exchange. When the indoor temperature is high, in order to avoid overheating, a greater degree of exhaust is needed to remove heat, ensure that the temperature is not too high, and maintain a comfortable environment; when the indoor temperature is low, the exhaust demand is less, and excessive exhaust will cause the indoor temperature to drop rapidly, affecting comfort. If the frequency of the exhaust fan is not adjusted according to the indoor temperature, the exhaust may be too strong, causing the indoor temperature to drop suddenly, affecting the comfort of the indoor environment.

[0120] Therefore, by adjusting the exhaust fan frequency according to the indoor temperature, it is possible to avoid excessive temperature fluctuations and maintain the stability of the indoor environment.

[0121] Optionally, the present application provides a possible method for determining the initial opening of the air supply valve according to the indoor pressure and determining the operating frequency of the exhaust fan according to the indoor temperature, including:

[0122] In the first step, if the indoor pressure is within the first preset range, the initial opening of the air supply valve is determined to be the first opening; if the indoor pressure is greater than the first preset range, the initial opening of the air supply valve is determined to be a value greater than the first opening; if the indoor pressure is less than the first preset range, the initial opening of the air supply valve is determined to be a value less than the first opening.

[0123] The first preset range is used to indicate that the indoor pressure is in a balanced state. The first preset range may be, for example, 100 kPa-120 kPa. This application does not impose any special restrictions on this.

[0124] The purpose of this step is to ensure that the fresh air air conditioning system can automatically adjust the initial opening of the air supply valve according to changes in indoor pressure, thereby maintaining relative stability of the indoor pressure.

[0125] It is understandable that when the indoor pressure is within the first preset range, it indicates that the current indoor pressure is in a balanced state, and because the initial opening of the air supply valve is determined according to the current indoor pressure, the initial opening of the air supply valve can be determined as the first opening.

[0126] When the indoor pressure is greater than the first preset range, it indicates that the indoor pressure is in an unbalanced state, which further indicates that the indoor pressure is too high. At this time, the fresh air air conditioning system needs to set the initial opening of the air supply valve to a value greater than the first opening to increase the air supply volume of the fresh air valve and gradually restore it to a balanced state.

[0127] In addition, when the indoor pressure is less than the first preset range, it indicates that the indoor pressure is in an unbalanced state, which further indicates that the indoor pressure is low. At this time, the fresh air air conditioning system needs to set the initial opening of the air supply valve to a value less than the first opening to reduce the air supply volume of the fresh air valve and gradually restore it to a balanced state.

[0128] For example, assuming that the first preset range is 100 kPa to 120 kPa, if the fresh air air conditioning system detects that the indoor pressure is 110 kPa, then based on the above information, it can be determined that the indoor pressure is within the first preset range, and at this time, the initial opening of the air supply valve can be determined as the first opening.

[0129] The second step is to determine the operating frequency of the exhaust fan based on the indoor temperature. The operating frequency of the exhaust fan is positively correlated with the indoor temperature.

[0130] The purpose of this step is to allow the exhaust fan to automatically adjust its operating intensity according to actual indoor needs, avoiding energy waste or inability to effectively control indoor temperature due to excessively high or low air volume, thereby achieving the dual goals of energy saving and environmental optimization.

[0131] It can be understood that the operating frequency of the exhaust fan is positively correlated with the indoor temperature, which means that when the indoor temperature rises, the operating frequency of the exhaust fan will increase accordingly to accelerate air circulation and discharge excess heat, thereby effectively lowering the indoor temperature; conversely, when the indoor temperature is low, the operating frequency of the exhaust fan will decrease accordingly to save energy and maintain proper ventilation effect.

[0132] Therefore, by adjusting the operating frequency of the exhaust fan according to the indoor temperature, it can ensure that the indoor environment is always maintained in the best state, while improving energy efficiency and avoiding waste.

[0133] In this step, the operating frequency of the exhaust fan can be determined according to the indoor temperature by, for example, first associating the operating frequency of the exhaust fan with the set target temperature, and when the indoor temperature is higher than the target temperature, the operating frequency of the exhaust fan is increased, and when the indoor temperature is lower than the target temperature, the operating frequency of the exhaust fan is reduced; or it can be determined whether the indoor temperature is within a preset temperature range, and if the indoor temperature exceeds the preset temperature range, the operating frequency of the exhaust fan is increased, and if the indoor temperature is lower than the preset temperature range, the operating frequency of the exhaust fan is reduced. This application does not impose any special restrictions on this.

[0134] S204: During the operation of the fresh air mode, the opening of the air supply valve, the operating frequency of the air supply fan or the opening of the return air valve is adjusted according to the indoor pressure.

[0135] The purpose of this step is to adjust the air supply valve, the operating frequency of the air supply fan and the opening of the return air valve according to the change of indoor pressure in the fresh air mode.

[0136] It is understandable that, first of all, indoor pressure can reflect the circulation status of indoor air and the stability of the environment. When the indoor pressure is unbalanced, it may cause problems such as poor air circulation and accumulation of pollutants, affecting the comfort of the indoor environment.

[0137] Secondly, the air supply valve is responsible for introducing fresh air from outside into the room, so as to refresh the indoor air and remove pollutants, ensuring good indoor air quality;

[0138] Next, the blower is responsible for not only removing the accumulated heat, moisture and pollutants in the room, but also balancing the indoor pressure and keeping the indoor air fresh;

[0139] Finally, the return air valve can ensure the balance of indoor air during the exhaust process and avoid abnormal pressure.

[0140] During the operation of the exhaust fan, in order to avoid abnormal indoor pressure, the balance of indoor air can be ensured.

[0141] Therefore, when the fresh air air-conditioning system is operating in the fresh air mode, adjusting the opening of the supply air valve, the operating frequency of the supply fan or the opening of the return air valve by using the indoor pressure will not only help maintain the freshness of the indoor air and the pressure circulation balance, but also help improve the comfort and stability of the indoor environment.

[0142] Optionally, the present application provides a possible method for adjusting the opening of the air supply valve, the operating frequency of the air supply fan, or the opening of the return air valve according to the indoor pressure, including:

[0143] In the first step, if the indoor pressure is less than the second preset range, the opening of the air supply valve is increased.

[0144] The second preset range is used to indicate that the indoor pressure is in a balanced state. The second preset range may be, for example, 110 kPa to 150 kPa. This application does not impose any special restrictions on this.

[0145] The purpose of judging whether the indoor pressure is less than the second preset range is to determine whether the indoor pressure is in an unbalanced state when the fresh air air conditioning system is operating in the fresh air mode.

[0146] If the indoor pressure is less than the second preset range, it indicates that the indoor pressure is in an unbalanced state when the fresh air air conditioning system is operating in the fresh air mode. At this time, the opening of the air supply valve needs to be increased.

[0147] It can be understood that when the indoor pressure is less than the second preset range, it means that when the fresh air air-conditioning system is operating in the fresh air mode, the initial opening of the air supply valve is set too small, so the air volume delivered through the air supply valve cannot balance the indoor pressure, resulting in an unbalanced indoor pressure. Therefore, in order to balance the indoor pressure, it is necessary to dynamically increase the opening of the air supply valve.

[0148] In the second step, if the indoor pressure is greater than the second preset range, the return air valve is opened and the opening of the return air valve is adjusted according to the indoor pressure. The opening of the return air valve is positively correlated with the indoor pressure.

[0149] The purpose of judging whether the indoor pressure is greater than the second preset range is to determine whether the indoor pressure is in an unbalanced state when the fresh air air conditioning system is operating in the fresh air mode.

[0150] If the indoor pressure is greater than the second preset range, it indicates that the indoor pressure is in an unbalanced state when the fresh air air-conditioning system is operating in the fresh air mode. At this time, the return air valve needs to be opened and the opening of the return air valve needs to be adjusted according to the indoor pressure.

[0151] It can be understood that, first of all, the return air valve can introduce part of the indoor air back to the fresh air air-conditioning system, mix it with the fresh air and then discharge it, which helps to balance the pressure difference between indoor and outdoor.

[0152] Secondly, when it is determined that the indoor pressure is greater than the second preset range, it means that the indoor pressure is in an unbalanced state and there may be an excessive positive pressure situation.

[0153] Therefore, in order to adjust the indoor pressure and ensure that the indoor pressure gradually returns to a balanced state, it is necessary to open the return air valve and adjust the opening of the return air valve according to the indoor pressure.

[0154] In this step, the way of adjusting the opening of the return air valve according to the indoor pressure can be adjusted according to the preset relationship between the indoor pressure and the return air valve. For example, if the indoor pressure is 130 kPa, the opening of the return air valve needs to be opened to 30% of its maximum opening; if the indoor pressure is 140 kPa, the opening of the return air valve needs to be opened to 40% of its maximum opening; if the indoor pressure is 150 kPa, the opening of the return air valve needs to be opened to 50% of its maximum opening. This application does not impose any special restrictions on this.

[0155] S205: If in the fresh air mode, the opening of the air supply valve reaches the maximum opening and the operating frequency of the exhaust fan reaches the maximum frequency, but the indoor temperature is still higher than the target temperature, the fresh air air conditioning system is controlled to operate in the cooling mode.

[0156] The target temperature may be, for example, 21 degrees Celsius or 18 degrees Celsius, which is not particularly limited in the present application.

[0157] It is understandable that when the fresh air air conditioner is operating in the fresh air mode, if the opening of the air supply valve and the operating frequency of the exhaust fan have been adjusted to the maximum, but the indoor temperature is still higher than the target temperature, it means that the introduction and exhaust of hot air by fresh air alone can no longer meet the cooling demand.

[0158] Because the cooling mode can further lower the indoor temperature by cooling the air to achieve the expected cooling effect, in order to make the indoor temperature quickly reach the target temperature set by the user, the fresh air air-conditioning system will run the cooling mode at the same time as the fresh air mode, so that the cooling mode and the fresh air mode can operate in coordination.

[0159] For example, assuming that the target temperature is 21 degrees Celsius, it is known that the fresh air air conditioning system is running in the fresh air mode in the combination mode, and the indoor temperature is detected to be 26 degrees Celsius. Based on the above information, it is necessary to control the fresh air air conditioning system to run in the cooling mode on the basis of running in the fresh air mode.

[0160] S206: When the working mode is the cooling mode, the opening of the supply air valve is adjusted to the minimum opening, the opening of the return air valve is adjusted to the maximum opening, and the exhaust fan is turned off.

[0161] It can be understood that, first of all, the opening of the air supply valve is adjusted to the minimum opening, which means that the fresh air air-conditioning system does not completely block the entry of fresh air from the outside, but reduces the amount of air entering the room, which helps to reduce the heat introduced from the outside, lower the indoor temperature, and reduce the cooling burden of the air-conditioning system.

[0162] Secondly, by maximizing the opening of the return air valve, it helps to accelerate the heat exchange between indoor air and refrigeration equipment and improve cooling efficiency.

[0163] Finally, turning off the exhaust fan means reducing direct exhaust of indoor air, helping to reduce the possibility of outdoor hot air entering the room through the exhaust vents, while reducing the energy consumption of the fresh air air conditioning system.

[0164] Therefore, when the fresh air air-conditioning system is operating in cooling mode, measures such as adjusting the opening of the supply air valve to the minimum opening, adjusting the opening of the return air valve to the maximum opening, and turning off the exhaust fan can not only improve the cooling efficiency and lower the indoor temperature, but also reduce the energy consumption of the fresh air air-conditioning.

[0165] The control method of the fresh air air conditioning system provided in the present application is that the fresh air air conditioning system first determines its working mode according to the outdoor ambient temperature. In the combined mode, the system first operates in the fresh air mode; while in the fresh air mode, the system adjusts the initial opening of the air supply valve and the operating frequency of the exhaust fan according to the indoor pressure and temperature. During operation, the system will also adjust the opening of the air supply valve, the operating frequency of the air supply fan or the opening of the return air valve in real time according to the changes in the indoor pressure. If in the fresh air mode, although the air supply valve has been opened to the maximum and the exhaust fan operating frequency has reached the highest, the indoor temperature is still higher than the target temperature, the system will automatically switch to the cooling mode. In the cooling mode, the opening of the air supply valve is adjusted to the minimum, the opening of the return air valve is adjusted to the maximum, and the exhaust fan is turned off at the same time. This method not only solves the problem of excessive energy consumption of the air conditioning system during the cooling process, but also ensures that the indoor temperature is always kept within the target range, thereby achieving an efficient and energy-saving indoor environment control effect.

[0166] Figure 3 This is a schematic diagram of the structure of the control device of the fresh air air conditioning system provided in this application. Figure 3 As shown, the present application provides a control device for a fresh air air conditioning system, and the control device 300 of the fresh air air conditioning system includes:

[0167] The detection module 301 is used to detect the outdoor environment temperature;

[0168] A determination module 302 is used to determine the working mode of the fresh air air conditioning system according to the outdoor ambient temperature, and the working mode is a fresh air mode, a cooling mode or a combination mode;

[0169] The control module 303 is used to control the fresh air air conditioning system to operate in the fresh air mode first when the working mode is the combined mode;

[0170] The control module 303 is further configured to control the fresh air air conditioning system to operate in the cooling mode when adjusting the operating parameters of the fresh air air conditioning system in the fresh air mode fails to make the indoor temperature reach the target temperature.

[0171] Optionally, the determination module 302 is further configured to determine the initial opening of the air supply valve according to the indoor pressure and determine the operating frequency of the exhaust fan according to the indoor temperature when the working mode is the fresh air mode;

[0172] The determination module 302 is further used to adjust the opening of the air supply valve, the operating frequency of the air supply fan or the opening of the return air valve according to the indoor pressure during the operation of the fresh air mode.

[0173] Optionally, the control module 303 is specifically used to control the fresh air air-conditioning system to operate in the cooling mode when, in the fresh air mode, the opening of the air supply valve reaches the maximum opening and the operating frequency of the exhaust fan reaches the maximum frequency, but the indoor temperature is still higher than the target temperature.

[0174] Optionally, the determination module 302 is further configured to determine the initial opening of the air supply valve as a first opening when the indoor pressure is within a first preset range;

[0175] The determination module 302 is further configured to determine the initial opening of the air supply valve to be a value greater than the first opening when the indoor pressure is greater than the first preset range;

[0176] The determination module 302 is further configured to determine the initial opening of the air supply valve to be a value smaller than the first opening when the indoor pressure is smaller than the first preset range;

[0177] The determination module 302 is specifically configured to determine the operating frequency of the exhaust fan according to the indoor temperature, and the operating frequency of the exhaust fan is positively correlated with the indoor temperature.

[0178] Optionally, the device further includes: an enlarging module 304;

[0179] The increasing module 304 is used to increase the opening of the air supply valve when the indoor pressure is less than a second preset range;

[0180] The device further comprises: an opening module 305;

[0181] The opening module 305 is used to open the return air valve when the indoor pressure is greater than the second preset range;

[0182] The device further includes: an adjustment module 306;

[0183] The adjustment module 306 is used to adjust the opening of the return air valve according to the indoor pressure, and the opening of the return air valve is positively correlated with the indoor pressure.

[0184] Optionally, the adjustment module 306 is further configured to adjust the opening of the air supply valve to a minimum opening and the opening of the air return valve to a maximum opening when the working mode is the cooling mode;

[0185] The device further comprises: a closing module 307;

[0186] The closing module 307 is used to close the exhaust fan.

[0187] Optionally, the determination module 302 is specifically configured to determine that the working mode is the fresh air mode when the outdoor ambient temperature is less than or equal to a first temperature threshold;

[0188] The determination module 302 is specifically configured to determine that the working mode is the combination mode when the outdoor ambient temperature is greater than the first temperature threshold and less than the second temperature threshold;

[0189] The determination module 302 is specifically configured to determine that the working mode is the cooling mode when the outdoor ambient temperature is greater than or equal to the second temperature threshold.

[0190] Figure 4 This is a schematic diagram of the structure of the control device of the fresh air air conditioning system provided in this application. Figure 4 As shown, the present application provides a control device for a fresh air air conditioning system, and the control device 400 of the fresh air air conditioning system includes: a receiver 401, a transmitter 402, a processor 403 and a memory 404.

[0191] Receiver 401, for receiving instructions and data;

[0192] A transmitter 402, used for sending instructions and data;

[0193] Memory 404, for storing computer-executable instructions;

[0194] The processor 403 is used to execute the computer-executable instructions stored in the memory 404 to implement the various steps executed by the control method of the fresh air air conditioning system in the above embodiment. For details, please refer to the relevant description in the above embodiment of the control method of the fresh air air conditioning system.

[0195] Optionally, the memory 404 may be independent or integrated with the processor 403 .

[0196] When the memory 404 is independently provided, the electronic device further includes a bus for connecting the memory 404 and the processor 403 .

[0197] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, a control method for a fresh air air conditioning system as executed by the control device of the fresh air air conditioning system described above is implemented.

[0198] It will be appreciated by those skilled in the art that all or some of the steps, systems, and functional modules / units in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or transient medium). As is known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those skilled in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0199] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A control method for a fresh air air conditioning system, characterized in that: include: Detecting the outdoor ambient temperature, and determining the working mode of the fresh air air conditioning system according to the outdoor ambient temperature, the working mode being a fresh air mode, a cooling mode or a combined mode; When the working mode is the combined mode, the fresh air air-conditioning system is controlled to operate in the fresh air mode first. If adjusting the operating parameters of the fresh air air-conditioning system in the fresh air mode cannot make the indoor temperature reach the target temperature, the fresh air air-conditioning system is controlled to operate in the cooling mode.

2. The method according to claim 1, characterized in that Also includes: When the working mode is the fresh air mode, the initial opening of the air supply valve is determined according to the indoor pressure, and the operating frequency of the exhaust fan is determined according to the indoor temperature; During operation of the fresh air mode, the opening of the air supply valve, the operating frequency of the air supply fan or the opening of the return air valve is adjusted according to the indoor pressure.

3. The method according to claim 2, characterized in that If adjusting the operating parameters of the fresh air air conditioning system in the fresh air mode cannot make the indoor temperature reach the target temperature, controlling the fresh air air conditioning system to operate in the cooling mode includes: If in the fresh air mode, the opening of the air supply valve reaches the maximum opening and the operating frequency of the exhaust fan reaches the maximum frequency, but the indoor temperature is still higher than the target temperature, the fresh air air-conditioning system is controlled to operate in the cooling mode.

4. The method according to claim 3, characterized in that Determining the initial opening of the air supply valve according to the indoor pressure and determining the operating frequency of the exhaust fan according to the indoor temperature includes: If the indoor pressure is within a first preset range, the initial opening of the air supply valve is determined to be a first opening; if the indoor pressure is greater than the first preset range, the initial opening of the air supply valve is determined to be a value greater than the first opening; if the indoor pressure is less than the first preset range, the initial opening of the air supply valve is determined to be a value less than the first opening; The operating frequency of the exhaust fan is determined according to the indoor temperature, and the operating frequency of the exhaust fan is positively correlated with the indoor temperature.

5. The method according to claim 3, characterized in that: The adjusting the opening of the air supply valve, the operating frequency of the air supply fan or the opening of the return air valve according to the indoor pressure includes: If the indoor pressure is less than a second preset range, increasing the opening of the air supply valve; If the indoor pressure is greater than the second preset range, the return air valve is opened, and the opening of the return air valve is adjusted according to the indoor pressure, and the opening of the return air valve is positively correlated with the indoor pressure.

6. The method according to claim 2, characterized in that Also includes: When the working mode is the cooling mode, the opening of the air supply valve is adjusted to the minimum opening, the opening of the return air valve is adjusted to the maximum opening, and the exhaust fan is turned off.

7. The method according to any one of claims 1 to 6, characterized in that: Determining the working mode of the fresh air air conditioning system according to the outdoor ambient temperature includes: When the outdoor ambient temperature is less than or equal to a first temperature threshold, determining that the working mode is the fresh air mode; When the outdoor ambient temperature is greater than the first temperature threshold and less than the second temperature threshold, determining that the working mode is the combined mode; When the outdoor ambient temperature is greater than or equal to the second temperature threshold, the operating mode is determined to be the cooling mode.

8. A control device for a fresh air air conditioning system, characterized in that: include: A detection module, used for detecting outdoor ambient temperature; A determination module, used to determine the working mode of the fresh air air conditioning system according to the outdoor ambient temperature, the working mode being a fresh air mode, a cooling mode or a combination mode; A control module, used for controlling the fresh air air conditioning system to operate in the fresh air mode first when the working mode is the combined mode; The control module is also used to control the fresh air air conditioning system to operate in the cooling mode when adjusting the operating parameters of the fresh air air conditioning system in the fresh air mode fails to make the indoor temperature reach the target temperature.

9. A control device for a fresh air air conditioning system, characterized in that: include: Memory; processor; Wherein, the memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the control method of the fresh air air-conditioning system according to any one of claims 1-7.

10. A computer storage medium, characterized in that: The computer storage medium stores computer execution instructions, and when the computer execution instructions are executed by the processor, they are used to implement the control method of the fresh air air conditioning system as described in any one of claims 1-7.

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