Fresh air system, method and device for dehumidification, computer readable storage medium

Abstract

The application relates to the technical field of intelligent household appliances, and discloses a fresh air system, which comprises an indoor side and an outdoor side and forms a refrigerant circulation loop; the indoor side comprises a heat recovery assembly, a throttling valve, a one-way valve reversing assembly, a dehumidification valve, a first indoor heat exchanger and a second indoor heat exchanger connected in series, wherein the heat recovery assembly and the throttling valve are connected between the one-way valve reversing assembly and the outdoor side; the one-way valve reversing assembly is used for changing a flow path to control the heat absorption and release states of the first indoor heat exchanger and the second indoor heat exchanger; the dehumidification valve is connected between the first indoor heat exchanger and the second indoor heat exchanger; wherein the heat recovery assembly, the throttling valve and the dehumidification valve can be controlled to change operation states according to different temperature and humidity adjustment modes. The application further discloses a method and device for dehumidification and a computer readable storage medium.

Description

Technical Field

[0001] This application relates to the field of smart home appliance technology, such as a fresh air system, a method and apparatus for dehumidification, and a computer-readable storage medium. Background Technology

[0002] The all-in-one fresh air unit not only provides efficient air purification and ventilation, but also regulates temperature and humidity. It integrates the functions of a traditional air conditioner, air purifier, and humidifier, thus offering users a more intelligent air management solution.

[0003] However, the current circulation systems of all-in-one fresh air systems cannot meet the needs of some special scenarios during use. For example, ordinary air conditioners and fresh air systems often experience cooling during dehumidification. When southern regions are experiencing humid weather or the plum rain season, prolonged and intensive dehumidification is required. This makes the cooling more noticeable, thus affecting the user's temperature requirements.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0006] This disclosure provides a fresh air system, a method and apparatus for dehumidification, and a computer-readable storage medium to maintain temperature during the dehumidification process of the fresh air system.

[0007] In some embodiments, the fresh air system includes: an indoor side and an outdoor side, forming a refrigerant circulation loop; the indoor side includes: a heat recovery component, a throttling valve, a one-way valve reversing component, a dehumidifying valve, and a first indoor heat exchanger and a second indoor heat exchanger connected in series, wherein the heat recovery component and the throttling valve are connected between the one-way valve reversing component and the outdoor side; the one-way valve reversing component is used to change the flow path to control the heat absorption and release states of the first indoor heat exchanger and the second indoor heat exchanger; the dehumidifying valve is connected between the first indoor heat exchanger and the second indoor heat exchanger; wherein the heat recovery component, the throttling valve, and the dehumidifying valve can be controlled to change their operating states according to different temperature and humidity control modes.

[0008] In some embodiments, the dehumidification method is applied to the aforementioned fresh air system, wherein the heat recovery component includes a heat recovery heat exchanger and an exhaust fan; the method includes: acquiring outdoor temperature and outdoor humidity; determining a target temperature and humidity control mode for the fresh air system based on the outdoor temperature and outdoor humidity; and controlling the operation of the exhaust fan, the opening degree of the throttling valve, and the opening degree of the dehumidification valve according to the target temperature and humidity control mode.

[0009] In some embodiments, the dehumidification apparatus includes a processor and a memory storing program instructions, the processor being configured to execute the aforementioned dehumidification method when the program instructions are executed.

[0010] In some embodiments, the computer-readable storage medium stores program instructions that, when executed, perform the aforementioned method for dehumidification.

[0011] The fresh air system, dehumidification method and apparatus, and computer-readable storage medium provided in this disclosure can achieve the following technical effects:

[0012] A one-way valve reversing assembly, a second indoor heat exchanger, a heat recovery assembly, a throttling valve, and a dehumidifying valve are added to the indoor side. The one-way valve reversing assembly controls the refrigerant flow path, thereby controlling the heat absorption and release states of the first and second indoor heat exchangers. By controlling the operation of the heat recovery assembly, it is possible to control whether the heat recovery assembly recovers heat / cooling energy from the indoor environment. By controlling the operation of the throttling valve, the refrigerant flow rate can be controlled. By adjusting the dehumidifying valve, the dehumidification capacity of the indoor heat exchanger can be adjusted. In this way, based on different temperature and humidity control modes of the fresh air system, by controlling the operation of the heat recovery assembly, throttling valve, and dehumidifying valve, the temperature can be appropriately adjusted during the dehumidification process of the fresh air system, thereby meeting the user's temperature and humidity requirements.

[0013] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0014] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0015] Figure 1 This is a schematic diagram of a fresh air system provided in an embodiment of this disclosure;

[0016] Figure 2 This is a schematic diagram of the refrigerant flow path when the fresh air system provided in this embodiment is operating in heating and dehumidification mode;

[0017] Figure 3 This is a schematic diagram of the refrigerant flow path when the fresh air system provided in this embodiment is operating in constant temperature and dehumidification mode;

[0018] Figure 4 This is a schematic diagram of the refrigerant flow path when the fresh air system is operating in cooling and dehumidification mode according to an embodiment of this disclosure;

[0019] Figure 5 This is a schematic diagram of the refrigerant flow path when the fresh air system is operating in heating mode according to an embodiment of this disclosure;

[0020] Figure 6 This is a schematic diagram of a dehumidification method provided in an embodiment of this disclosure;

[0021] Figure 7 This is a schematic diagram of another dehumidification method provided in an embodiment of this disclosure;

[0022] Figure 8 This is a schematic diagram of another dehumidification method provided in an embodiment of this disclosure;

[0023] Figure 9 This is a schematic diagram of another dehumidification method provided in an embodiment of this disclosure;

[0024] Figure 10 This is a schematic diagram of another dehumidification method provided in an embodiment of this disclosure;

[0025] Figure 11 This is a schematic diagram of another dehumidification method provided in an embodiment of this disclosure;

[0026] Figure 12 This is a schematic diagram of another dehumidification method provided in an embodiment of this disclosure;

[0027] Figure 13 This is a schematic diagram of a dehumidification device provided in an embodiment of this disclosure;

[0028] Figure 14 This is a schematic diagram of another dehumidification device provided in an embodiment of this disclosure;

[0029] Figure 15 This is a schematic diagram of a fresh air system provided in an embodiment of this disclosure.

[0030] Figure label:

[0031] 1. Fresh air system; 10. Indoor side; 11. Heat recovery assembly; 111. Heat recovery heat exchanger; 112. Exhaust fan; 12. Throttling valve; 13. One-way valve reversing assembly; 131. First gravity one-way valve; 132. Second gravity one-way valve; 133. Third gravity one-way valve; 134. Fourth gravity one-way valve; 14. Dehumidification valve; 15. First indoor heat exchanger; 16. Second indoor heat exchanger; 20. Outdoor side; 21. Compressor; 22. Four-way reversing valve; 23. Outdoor heat exchanger; 24. Electronic expansion valve; 25. Outdoor fan;

[0032] 130. Device for dehumidification; 131. Acquisition module; 132. Determination module; 133. Control module;

[0033] 140. Device for dehumidification; 141. Processor; 142. Memory; 143. Communication interface; 144. Bus;

[0034] 150. Fresh air system. Detailed Implementation

[0035] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0036] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0037] Unless otherwise stated, the term "multiple" means two or more.

[0038] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0039] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0040] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0041] Combination Figure 1 As shown, this disclosure provides a fresh air system 1, including an indoor side 10 and an outdoor side 20, which are connected to form a refrigerant circulation loop. The indoor side 10 includes a heat recovery assembly 11, a throttling valve 12, a one-way valve reversing assembly 13, a dehumidifying valve 14, a first indoor heat exchanger 15, and a second indoor heat exchanger 16. The first indoor heat exchanger 15 and the second indoor heat exchanger 16 are connected in series, with the second indoor heat exchanger 16 located downstream of the first indoor heat exchanger 15. The one-way valve reversing assembly 13 consists of multiple gravity one-way valves and includes multiple refrigerant ports, each of which is connected to the outdoor side 20, the first indoor heat exchanger 15, and the second indoor heat exchanger 16. The one-way valve reversing assembly 13 is used to change the flow path of the refrigerant within it; that is, the function of the one-way valve reversing assembly 13 is the same as that of a four-way reversing valve, to control the heat absorption and release states of the first indoor heat exchanger 15 and the second indoor heat exchanger 16. A dehumidifier valve 14 is connected between the first indoor heat exchanger 15 and the second indoor heat exchanger 16. The dehumidifier valve 14 can be controlled to change its opening degree to adjust the dehumidification rate. A heat recovery assembly 11 is connected between the outdoor side 20 and the one-way valve reversing assembly 13 to recover heat / cooling energy from the room. A throttling valve 12 is connected between the heat recovery assembly 11 and the one-way valve reversing assembly 13. Based on different temperature and humidity control modes of the fresh air system 1, the heat recovery assembly 11, the throttling valve 12, and the dehumidifier valve 14 can be controlled to change their operating states, thereby enabling the fresh air system 1 to adjust the temperature to meet requirements during dehumidification.

[0042] The fresh air system 1 provided in this embodiment adds a one-way valve reversing assembly 13, a second indoor heat exchanger 16, a heat recovery assembly 11, a throttling valve 12, and a dehumidifying valve 14 to the indoor side 10. The one-way valve reversing assembly 13 controls the refrigerant flow path, thereby controlling the heat absorption and release states of the first indoor heat exchanger 15 and the second indoor heat exchanger 16. By controlling the operating state of the heat recovery assembly 11, it is possible to control whether the heat recovery assembly 11 recovers indoor heat / cold energy. By controlling the operating state of the throttling valve 12, the refrigerant flow rate can be controlled. By adjusting the dehumidifying valve 14, the dehumidification capacity of the indoor heat exchanger can be adjusted. Thus, based on different temperature and humidity control modes of the fresh air system 1, controlling the operating states of the heat recovery assembly 11, the throttling valve 12, and the dehumidifying valve 14 allows for appropriate temperature adjustment during the dehumidification process of the fresh air system 1, thereby meeting the user's temperature and humidity requirements.

[0043] In addition, the heat recovery component 11 is used to recover indoor heat / cold energy and use this heat to regulate the temperature of the refrigerant, thereby realizing the reuse of indoor return air waste heat and reducing energy waste.

[0044] Optionally, the outdoor side 20 includes: a compressor 21, a four-way reversing valve 22, an outdoor fan 25, an outdoor heat exchanger 23, and an electronic expansion valve 24. The four-way reversing valve 22 is connected to one refrigerant port of the one-way valve reversing assembly 13. The outdoor heat exchanger 23 is connected to the heat recovery heat exchanger 111 via the electronic expansion valve 24, and further connected to the other refrigerant port of the one-way valve reversing assembly 13. The outdoor fan 25 corresponds to the outdoor heat exchanger 23.

[0045] Optionally, the one-way valve reversing assembly 13 includes: a first gravity one-way valve 131, a second gravity one-way valve 132, a third gravity one-way valve 133, and a fourth gravity one-way valve 134. The inlet of the first gravity one-way valve 131 is connected to the outlet of the fourth gravity one-way valve 134. The outlet of the second gravity one-way valve 132 is connected to the outlet of the first gravity one-way valve 131. The outlet of the third gravity one-way valve 133 is connected to the inlet of the second gravity one-way valve 132. The inlet of the fourth gravity one-way valve 134 is connected to the inlet of the third gravity one-way valve 133. The inlet of the first indoor heat exchanger 15 is connected between the first gravity one-way valve 131 and the second gravity one-way valve 132. The refrigerant port of the throttle valve 12 is connected between the second gravity one-way valve 132 and the third gravity one-way valve 133. The outlet of the second indoor heat exchanger 16 is connected between the third gravity check valve 133 and the fourth gravity check valve 134. One refrigerant port of the four-way valve is connected between the first gravity check valve 131 and the fourth gravity check valve 134. In this way, the four-way reversing valve 22 reverses the direction of the refrigerant on the outdoor side 20 to switch the heat absorption and release state of the outdoor heat exchanger 23, and the one-way valve reversing assembly 13 reverses the direction of the refrigerant on the indoor side 10 to switch the heat absorption and release state of the first indoor heat exchanger 15 and the second indoor heat exchanger 16. The two work together to achieve operation of different temperature and humidity control modes.

[0046] Optionally, the heat recovery assembly 11 includes a heat recovery heat exchanger 111 and an exhaust fan 112. The heat recovery heat exchanger 111 is connected between a throttling valve 12 and the outdoor side 20. Specifically, one refrigerant port of the heat recovery heat exchanger 111 is connected to the outdoor heat exchanger 23 via an electronic expansion valve 24, and the other refrigerant port of the heat recovery heat exchanger 111 is connected between a second gravity check valve 132 and a third gravity check valve 133 via a throttling valve 12. The exhaust fan 112 is correspondingly arranged with the heat recovery heat exchanger 111 and can be controlled to open or close. When the exhaust fan 112 is controlled to open, the exhaust fan 112 blows airflow toward the heat recovery heat exchanger 111 to allow the heat recovery heat exchanger 111 to recover heat / cold energy. When the exhaust fan 112 is controlled to close, the heat recovery heat exchanger 111 does not recover heat / cold energy.

[0047] Optionally, the temperature and humidity control modes of the fresh air system 1 include: heating and dehumidification mode, constant temperature and dehumidification mode, cooling and dehumidification mode (which is also a cooling mode) and heating mode.

[0048] Combination Figure 2 As shown, when the fresh air system 1 is operating in the heating and dehumidification mode, the refrigerant flow path is as follows: outdoor side 20, one-way valve reversing assembly 13, first indoor heat exchanger 15, dehumidification valve 14, second indoor heat exchanger 16, one-way valve reversing assembly 13, throttle valve 12, heat recovery assembly 11 and outdoor side 20.

[0049] Combination Figure 3 As shown, when the fresh air system 1 is running in constant temperature and dehumidification mode, the refrigerant flow path is as follows: outdoor side 20, heat recovery component 11, throttle valve 12, one-way valve reversing component 13, first indoor heat exchanger 15, dehumidification valve 14, second indoor heat exchanger 16, one-way valve reversing component 13 and outdoor side 20.

[0050] Combination Figure 4 As shown, when the fresh air system 1 is operating in cooling mode or dehumidification mode, the refrigerant flow path is as follows: outdoor side 20, heat recovery component 11, throttle valve 12, one-way valve reversing component 13, first indoor heat exchanger 15, dehumidification valve 14, second indoor heat exchanger 16, one-way valve reversing component 13 and outdoor side 20.

[0051] Combination Figure 5 As shown, when the fresh air system 1 is operating in heating mode, the refrigerant flow path is as follows: outdoor side 20, one-way valve reversing assembly 13, first indoor heat exchanger 15, dehumidification valve 14, second indoor heat exchanger 16, one-way valve reversing assembly 13, throttle valve 12, heat recovery assembly 11 and outdoor side 20.

[0052] Optionally, temperature sensors are provided at the refrigerant inlet of the first indoor heat exchanger 15, the refrigerant inlet of the second indoor heat exchanger 16, and the refrigerant outlet of the second indoor heat exchanger 16 to detect the refrigerant temperature.

[0053] Combination Figure 6 As shown, this disclosure provides a method for dehumidification, applied to the aforementioned fresh air system. The method includes:

[0054] S101, the processor obtains the outdoor temperature and outdoor humidity.

[0055] S102, the processor determines the target temperature and humidity regulation mode of the fresh air system based on the outdoor temperature and humidity.

[0056] S103, the processor controls the operation of the exhaust fan, the opening of the throttle valve, and the opening of the dehumidification valve according to the target temperature and humidity regulation mode.

[0057] The processor of the fresh air system uses temperature and humidity sensors to obtain outdoor temperature, outdoor humidity, and indoor temperature, and then determines the target temperature and humidity control mode for the fresh air system. If the outdoor temperature is low and the humidity is high, resulting in a temperature difference between indoors and outdoors, the target temperature and humidity control mode is determined to be heating and dehumidifying mode. If the outdoor temperature is suitable but the humidity is high, resulting in similar indoor and outdoor temperatures, the target temperature and humidity control mode is determined to be constant temperature and dehumidifying mode. If the outdoor temperature is high, and the indoor temperature is lower than the outdoor temperature, the target temperature and humidity control mode is determined to be cooling and dehumidifying mode (cooling mode). If the outdoor temperature is low, and the indoor temperature is higher than the outdoor temperature, the target temperature and humidity control mode is determined to be heating mode.

[0058] After determining the target temperature and humidity control mode, control the operation of the exhaust fan, the opening of the throttle valve, and the opening of the dehumidification valve to make the fresh air system operate in the target temperature and humidity control mode.

[0059] The dehumidification method provided in this disclosure determines the target temperature and humidity regulation mode of the fresh air system based on outdoor temperature and humidity, and then controls the corresponding operating state of the exhaust fan and the opening degree of the throttling valve and dehumidification valve. In this way, the temperature can be appropriately regulated during the dehumidification process of the fresh air system, thereby meeting the user's temperature and humidity requirements.

[0060] In addition, when the heat recovery unit is in operation, it recovers the heat / cooling energy in the room and transfers it to the refrigerant, so that the waste heat of the indoor return air can be reused, thereby reducing energy waste.

[0061] Combination Figure 7 As shown, this disclosure provides another method for dehumidification, applied to the aforementioned fresh air system. The method includes:

[0062] S101, the processor obtains the outdoor temperature and outdoor humidity.

[0063] S102 processes the outdoor temperature and humidity to determine the target temperature and humidity control mode for the fresh air system.

[0064] S113, when the target temperature and humidity regulation mode is heating and dehumidification mode, the processor controls the exhaust fan and throttle valve to open.

[0065] S123, the processor controls the opening degree of the dehumidification valve based on the outlet temperature and inlet temperature of the second indoor heat exchanger.

[0066] The heating and dehumidifying mode is suitable for situations where the outdoor temperature is low and the humidity is high. Therefore, the circulation process involves heating and dehumidifying. Due to the temperature difference between indoors and outdoors, the exhaust fan is turned on to recover indoor heat. Fresh air first passes through the second indoor heat exchanger (evaporator) for cooling and dehumidification, and then is reheated by the first indoor heat exchanger (condenser) before being discharged into the room.

[0067] Throughout the operation, the throttle valve is kept fully open. Simultaneously, the inlet temperature TC2 and outlet temperature TC1 of the second indoor heat exchanger are acquired, and ΔT1 = TC2 - TC1 is calculated. The opening degree of the dehumidification valve is controlled based on ΔT1. Specifically, if ΔT1 > ΔTC1, where ΔTC1 is the first preset temperature difference, it indicates that ΔT1 is too large, and the opening degree of the dehumidification valve is increased. If ΔT1 < ΔTC2, where ΔTC2 is the second preset temperature difference, and ΔTC2 < ΔTC1, it indicates that ΔT1 is too small, and the opening degree of the dehumidification valve is decreased.

[0068] like Figure 2 As shown, in this mode, the refrigerant flow path is: compressor (compressing refrigerant) → four-way reversing valve → first gravity check valve → first indoor heat exchanger (condenser) → dehumidification valve → second indoor heat exchanger (evaporator) → third gravity check valve → throttle valve (fully open) → heat recovery heat exchanger (evaporator) → electronic expansion valve (fully open) → outdoor heat exchanger (evaporator) → compressor.

[0069] Combination Figure 8 As shown, this disclosure provides another method for dehumidification, applied to the aforementioned fresh air system. The method includes:

[0070] S101, the processor obtains the outdoor temperature and outdoor humidity.

[0071] S102, the processor determines the target temperature and humidity regulation mode of the fresh air system based on the outdoor temperature and humidity.

[0072] S133, when the target temperature and humidity regulation mode is heating and dehumidification mode, the processor controls the exhaust fan to shut down and the throttling valve to open.

[0073] S143, the processor controls the opening degree of the dehumidification valve based on the outlet temperature and inlet temperature of the second indoor heat exchanger.

[0074] The constant temperature dehumidification mode is suitable for situations where the outdoor temperature is suitable and the humidity is high. In this case, the outdoor temperature is relatively uniform, and heat recovery is not required, so the exhaust fan is turned off. Fresh air first passes through the second indoor heat exchanger (evaporator) for cooling and dehumidification, and then is reheated by the first indoor heat exchanger (condenser) before being discharged into the room.

[0075] Throughout the operation, the throttle valve is kept fully open. Simultaneously, the inlet temperature TC2 and outlet temperature TC1 of the second indoor heat exchanger are acquired, and ΔT2 = TC2 - TC1 is calculated. The opening degree of the dehumidification valve is controlled based on ΔT2. Specifically, if ΔT2 > ΔTC3, where ΔTC3 is the third preset temperature difference, it indicates that ΔT2 is too large, and the opening degree of the dehumidification valve is increased. If ΔT2 < ΔTC4, where ΔTC4 is the fourth preset temperature difference, and ΔTC4 < ΔTC3, it indicates that ΔT2 is too small, and the opening degree of the dehumidification valve is decreased.

[0076] like Figure 3 As shown, in this mode, the refrigerant flow path is: compressor (compressing refrigerant) → four-way reversing valve → outdoor heat exchanger (condenser) → electronic expansion valve (fully open) → heat recovery heat exchanger → throttle valve (fully open) → second gravity check valve → first indoor heat exchanger (condenser) → dehumidification valve (opening control) → second indoor heat exchanger (evaporator) → fourth gravity check valve → four-way reversing valve → compressor.

[0077] Combination Figure 9 As shown, this disclosure provides another method for dehumidification, applied to the aforementioned fresh air system. The method includes:

[0078] S101, the processor obtains the outdoor temperature and outdoor humidity.

[0079] S102, the processor determines the target temperature and humidity regulation mode of the fresh air system based on the outdoor temperature and humidity.

[0080] S153, when the target temperature and humidity regulation mode is cooling and dehumidification mode, the processor controls the exhaust fan to turn on and the dehumidification valve to turn on.

[0081] S163, the processor controls the opening of the throttle valve based on the outlet temperature of the second indoor heat exchanger and the inlet temperature of the first indoor heat exchanger.

[0082] The cooling and dehumidification mode is suitable for situations where the outdoor temperature is high, and the indoor temperature is lower than the outdoor temperature. Therefore, the exhaust fan is turned on to recover the indoor cooling capacity. Fresh air is first cooled by passing through the second indoor heat exchanger (evaporator) and the first indoor heat exchanger (evaporator) before being discharged into the room.

[0083] Throughout the operation, the dehumidification valve is kept fully open. Simultaneously, the outlet temperature TC1 of the second indoor heat exchanger and the inlet temperature TC3 of the first indoor heat exchanger are acquired, and ΔT3 = TC1 - TC3 is calculated. The opening of the throttle valve is controlled based on ΔT3. Specifically, if ΔT3 > ΔTC5, where ΔTC5 is the fifth preset temperature difference, it indicates that ΔT3 is too large, and the opening of the throttle valve is increased. If ΔT3 < ΔTC6, where ΔTC6 is the sixth preset temperature difference, and ΔTC6 < ΔTC5, it indicates that ΔT3 is too small, and the opening of the throttle valve is decreased.

[0084] like Figure 4 As shown, in this mode, the refrigerant flow path is: compressor (compressing refrigerant) → four-way reversing valve → outdoor heat exchanger (condenser) → outdoor electronic expansion valve (fully open) → heat recovery heat exchanger (condenser) → throttle valve (opening control) → second gravity check valve → first indoor heat exchanger (evaporator) → dehumidification valve (fully open) → second indoor heat exchanger (evaporator) → fourth gravity check valve → four-way reversing valve → compressor.

[0085] Combination Figure 10 As shown, this disclosure provides another method for dehumidification, applied to the aforementioned fresh air system. The method includes:

[0086] S101, the processor obtains the outdoor temperature and outdoor humidity.

[0087] S102, the processor determines the target temperature and humidity regulation mode of the fresh air system based on the outdoor temperature and humidity.

[0088] S173, when the target temperature and humidity regulation mode is heating mode, the processor controls the exhaust fan and dehumidification valve to open.

[0089] S183, the processor controls the opening of the throttle valve based on the intake air temperature and the outlet temperature of the second chamber heat exchanger.

[0090] The heating mode is suitable for situations where the outdoor temperature is low, and the indoor temperature is higher than the outdoor temperature. Therefore, the exhaust fan is turned on to recover indoor heat. Fresh air is first heated by passing through the second indoor heat exchanger (condenser) and the first indoor heat exchanger (condenser) before being discharged into the room.

[0091] Throughout the operation, the dehumidification valve is kept fully open. Simultaneously, the outlet temperature TC1 and suction temperature TC4 of the second indoor heat exchanger are acquired, and ΔT4 = TC4 - TC1 is calculated. The opening of the throttle valve is controlled based on ΔT4. Specifically, if ΔT4 > ΔTC7, where ΔTC7 is the seventh preset temperature difference, it indicates that ΔT4 is too large, and the opening of the throttle valve is increased. If ΔT4 < ΔTC8, where ΔTC8 is the eighth preset temperature difference, and ΔTC8 < ΔTC7, it indicates that ΔT4 is too small, and the opening of the throttle valve is decreased.

[0092] like Figure 5 As shown, in this mode, the refrigerant flow path is: compressor (compressing refrigerant) → four-way reversing valve → first gravity check valve → first indoor heat exchanger (condenser) → dehumidification valve (fully open) → second indoor heat exchanger (condenser) → third gravity check valve → throttle valve (opening control) → heat recovery heat exchanger (evaporator) → electronic expansion valve (fully open) → outdoor heat exchanger (evaporator) → four-way reversing valve → compressor.

[0093] Combination Figure 11 As shown, this disclosure provides another method for dehumidification, applied to the aforementioned fresh air system. The method includes:

[0094] S101, the processor obtains the outdoor temperature and outdoor humidity.

[0095] S102, the processor determines the target temperature and humidity regulation mode of the fresh air system based on the outdoor temperature and humidity.

[0096] S103, the processor controls the operation of the exhaust fan, the opening of the throttle valve, and the opening of the dehumidification valve according to the target temperature and humidity regulation mode.

[0097] S104: After executing S102, the processor determines the evaporator and condenser in the first indoor heat exchanger and the second indoor heat exchanger according to the target temperature and humidity control mode.

[0098] S105, when the target temperature and humidity control mode is a mode requiring dehumidification, the processor adjusts the compressor frequency according to the evaporator temperature.

[0099] S106, when the target temperature and humidity control mode is a mode that does not require dehumidification, the processor adjusts the compressor frequency according to the condenser's condensing temperature.

[0100] Throughout the operation of the target temperature and humidity control mode, the evaporation or condensation temperature is adjusted by regulating the compressor frequency. The evaporator and condenser in the first and second indoor heat exchangers are determined according to the target temperature and humidity control mode. If the target temperature and humidity control mode requires humidity control, such as a heating dehumidification mode, a constant temperature dehumidification mode, or a cooling dehumidification mode, the compressor frequency is adjusted based on the evaporation temperature of the evaporator. Optionally, when operating the heating dehumidification mode or the constant temperature dehumidification mode, the compressor frequency is controlled by monitoring the evaporation temperature of the second indoor heat exchanger (evaporator). When operating the cooling dehumidification mode, the compressor frequency is controlled by monitoring the evaporation temperatures of the first and second indoor heat exchangers (evaporators).

[0101] The evaporation temperature is controlled to approximately T1℃ by adjusting the compressor frequency. A preset evaporation temperature range is set to determine whether the evaporation temperature is too high or too low. If the evaporation temperature is higher than the upper limit of the preset range, it is determined to be too high, and the compressor frequency is increased accordingly. If the evaporation temperature is lower than the lower limit of the preset range, it is determined to be too low, and the compressor frequency is decreased accordingly. If there are multiple evaporation temperatures, such as in a cooling and dehumidification mode, the compressor frequency is increased when both evaporation temperatures are higher than the upper limit of the preset range, and decreased when both evaporation temperatures are lower than the lower limit of the preset range.

[0102] If the target temperature and humidity control mode is a no-humidity-adjustment mode, such as heating mode, the compressor frequency is adjusted according to the condenser's condensing temperature. When operating in heating mode, the compressor frequency is controlled by monitoring the condensing temperatures of the first and second indoor heat exchangers (condensers). The condensing temperature is controlled at approximately T2℃ by adjusting the compressor frequency. A preset condensing temperature range is set to determine if the condensing temperature is too high or too low. If the condensing temperatures of both the first and second indoor heat exchangers are greater than the upper limit of the preset condensing temperature range, the two condensing temperatures are determined to be too high, and the compressor frequency is increased accordingly. If the condensing temperatures of both the first and second indoor heat exchangers are less than the lower limit of the preset condensing temperature range, the two condensing temperatures are determined to be too low, and the compressor frequency is decreased accordingly.

[0103] Combination Figure 12 As shown, this disclosure provides another method for dehumidification, applied to the aforementioned fresh air system. The method includes:

[0104] S101, the processor obtains the outdoor temperature and outdoor humidity.

[0105] S102, the processor determines the target temperature and humidity regulation mode of the fresh air system based on the outdoor temperature and humidity.

[0106] S103, the processor controls the operation of the exhaust fan, the opening of the throttle valve, and the opening of the dehumidification valve according to the target temperature and humidity regulation mode.

[0107] S107: After executing S102, the processor determines the control priority of the supply fan, exhaust fan and outdoor fan according to the target temperature and humidity control mode.

[0108] S108, the processor adjusts the speed of the supply fan, exhaust fan and outdoor fan according to the control priority.

[0109] During operation of the target temperature and humidity control mode, the fans can also be adjusted to more precisely regulate temperature and humidity in accordance with the corresponding mode. The fans of the fresh air system include exhaust fans, outdoor fans, and supply fans (fans that deliver air to the room). The control priority of these three fans can be determined based on the target temperature and humidity control mode, and the speed of each fan can be adjusted according to the control priority.

[0110] If the target temperature and humidity control mode is heating and dehumidification mode, the supply fan has the highest priority and operates according to the user-set speed to ensure the evaporation of refrigerant in the second indoor heat exchanger (evaporator) and guarantee the dehumidification effect. The exhaust fan has the next highest priority, and the outdoor fan has the lowest priority. Because the refrigerant only completely condenses in the first indoor heat exchanger (condenser), releasing heat sufficiently, and then partially evaporates in the second indoor heat exchanger (evaporator), the heat released during condensation exceeds the heat absorbed by the evaporator, achieving the effect of heating and dehumidifying the fresh air. The refrigerant then enters the heat recovery heat exchanger (evaporator) to continue evaporating. At this time, the exhaust fan turns on, operating at the user-set speed. Indoor return air recovers heat through the heat recovery heat exchanger before being discharged outdoors. Finally, the outdoor fan defaults to the lowest speed. The outdoor fan speed is controlled according to the outlet air temperature and the user-set temperature. If the outlet air temperature is lower than the user-set temperature, meaning the evaporation of the second indoor heat exchanger is too high, the outdoor fan speed can be increased by one level to increase the evaporation of the outdoor heat exchanger, thus reducing the cooling capacity of the second indoor heat exchanger. Optionally, the system checks the temperature at preset intervals (e.g., 1 to 3 minutes) until the outlet air temperature matches the user-set temperature. If the outlet air temperature is higher than the user-set temperature, the system controls the exhaust fan to reduce its speed by one level and increases the cooling capacity of the second indoor heat exchanger until the outlet air temperature matches the user-set temperature.

[0111] If the target temperature and humidity control mode is constant temperature dehumidification mode, the supply fan, with the highest control priority, is controlled according to the user-set target setting, prioritizing the evaporation of refrigerant in the second indoor heat exchanger (evaporator) to ensure dehumidification effect. Fresh air first passes through the second indoor heat exchanger for cooling and dehumidification, then passes through the first indoor heat exchanger for reheating to achieve constant temperature dehumidification. At this point, the indoor and outdoor temperatures are similar, requiring no heat recovery, and the exhaust fan is off. Therefore, there is no heat exchange in the heat recovery heat exchanger; the refrigerant only condenses in the outdoor heat exchanger (condenser) and the first indoor heat exchanger (condenser). The heat exchange capacity of the outdoor heat exchanger (condenser) can be adjusted by regulating the outdoor fan speed, thereby controlling the reheat capacity of the first indoor heat exchanger (condenser) and ultimately regulating the outlet air temperature.

[0112] If the target temperature and humidity control mode is cooling and dehumidification, the supply fan is controlled according to the user-set speed. In this mode, both the first and second indoor heat exchangers function as evaporators, achieving deep cooling. The outdoor heat exchanger and heat recovery heat exchanger function as condensers, and their corresponding fan controls have priority. The exhaust fan is controlled first according to the user-set speed, ensuring the heat recovery heat exchanger recovers the maximum amount of indoor cooling capacity. Then, the outdoor fan is activated to prevent overheating of the outdoor unit's control board and subsequent shutdown; the outdoor fan speed is not controlled during this process.

[0113] If the target temperature and humidity control mode is heating mode, the supply fan speed is controlled according to the user's setting. Both the first and second indoor heat exchangers are condensers, achieving the heating effect. The outdoor heat exchanger and the heat recovery heat exchanger are both evaporators, and their corresponding fan controls have a priority relationship. The exhaust fan is adjusted first according to the user's setting to ensure that the heat recovery heat exchanger recovers indoor heat to the maximum extent. Then, the outdoor fan is turned on to fully evaporate the refrigerant using the outdoor heat exchanger, preventing liquid return.

[0114] Combination Figure 13 As shown, this embodiment of the present disclosure provides a dehumidification device 130, including: an acquisition module 131, a determination module 132, and a control module 133. The acquisition module 131 is configured to acquire outdoor temperature and outdoor humidity. The determination module 132 is configured to determine a target temperature and humidity control mode for the fresh air system based on the outdoor temperature and outdoor humidity. The control module 133 is configured to control the operation of the exhaust fan, the opening degree of the throttling valve, and the opening degree of the dehumidification valve according to the target temperature and humidity control mode.

[0115] Using the dehumidification device 130 provided in this embodiment, the target temperature and humidity regulation mode of the fresh air system is determined based on the outdoor temperature and humidity, thereby controlling the corresponding operating state of the exhaust fan and the opening degree of the throttling valve and dehumidification valve. In this way, the temperature can be appropriately regulated during the dehumidification process of the fresh air system, thereby meeting the user's temperature and humidity requirements.

[0116] Combination Figure 14 As shown, this embodiment of the present disclosure provides a dehumidification device 140, including a processor 141 and a memory 142. Optionally, the device 140 may further include a communication interface 143 and a bus 144. The processor 141, communication interface 143, and memory 142 can communicate with each other via the bus 144. The communication interface 143 can be used for information transmission. The processor 141 can call logical instructions in the memory 142 to execute the dehumidification method of the above embodiment.

[0117] Furthermore, the logic instructions in the aforementioned memory 142 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0118] The memory 142, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 141 executes functional applications and data processing by running the program instructions / modules stored in the memory 142, thereby implementing the dehumidification method in the above embodiments.

[0119] The memory 142 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 142 may include high-speed random access memory and may also include non-volatile memory.

[0120] Combination Figure 15As shown, this disclosure provides a fresh air system 150, including the aforementioned fresh air system 10 and the aforementioned dehumidification device 130 (140). The dehumidification device 130 (140) is installed on the product body. The installation relationship described herein is not limited to placement inside the fresh air system 150, but also includes installation connections with other components of the fresh air system 150, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the dehumidification device 130 (140) can be adapted to feasible product bodies to achieve other feasible embodiments.

[0121] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described dehumidification method.

[0122] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, such as a USB flash drive, external hard drive, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc., and other media capable of storing program code.

[0123] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0124] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0125] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0126] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A fresh air system, characterized in that, include: A refrigerant circulation loop is formed between the indoor and outdoor sides; The indoor side includes: a heat recovery assembly, a throttling valve, a one-way valve reversing assembly, a dehumidifying valve, and a first indoor heat exchanger and a second indoor heat exchanger connected in series. The heat recovery assembly and the throttling valve are connected between the one-way valve reversing assembly and the outdoor side. The one-way valve reversing assembly is used to change the flow path to control the heat absorption and release states of the first and second indoor heat exchangers. The dehumidifying valve is connected between the first and second indoor heat exchangers. The heat recovery component, the throttling valve, and the dehumidification valve can be controlled to change their operating states according to different temperature and humidity regulation modes.

2. The fresh air system according to claim 1, characterized in that, The heat recovery assembly includes: A heat recovery heat exchanger is connected between the throttling valve and the outdoor side; An exhaust fan, corresponding to the heat recovery heat exchanger; The exhaust fan can be turned on in a controlled manner so that the heat recovery heat exchanger can recover indoor heat / cooling.

3. A method for dehumidification, characterized in that, Applied to the fresh air system as described in claim 1 or 2, the heat recovery component includes a heat recovery heat exchanger and an exhaust fan; the method includes: Obtain outdoor temperature and outdoor humidity; The target temperature and humidity control mode of the fresh air system is determined based on the outdoor temperature and humidity. According to the target temperature and humidity regulation mode, control the operation of the exhaust fan, the opening of the throttling valve and the opening of the dehumidification valve.

4. The method according to claim 3, characterized in that, The step of controlling the operation of the exhaust fan, the opening of the throttle valve, and the opening of the dehumidification valve according to the target temperature and humidity regulation mode includes: When the target temperature and humidity regulation mode is the heating and dehumidification mode, control the exhaust fan and the throttling valve to open; The opening degree of the dehumidification valve is controlled according to the outlet temperature and inlet temperature of the second indoor heat exchanger.

5. The method according to claim 3, characterized in that, The step of controlling the operation of the exhaust fan, the opening of the throttle valve, and the opening of the dehumidification valve according to the target temperature and humidity regulation mode includes: When the target temperature and humidity control mode is the heating and dehumidification mode, the exhaust fan is turned off and the throttling valve is opened. The opening degree of the dehumidification valve is controlled according to the outlet temperature and inlet temperature of the second indoor heat exchanger.

6. The method according to claim 3, characterized in that, The step of controlling the operation of the exhaust fan, the opening of the throttle valve, and the opening of the dehumidification valve according to the target temperature and humidity regulation mode includes: When the target temperature and humidity control mode is cooling and dehumidification mode, control the exhaust fan to turn on and the dehumidification valve to turn on; The opening degree of the throttle valve is controlled based on the outlet temperature of the second indoor heat exchanger and the inlet temperature of the first indoor heat exchanger.

7. The method according to any one of claims 3 to 6, characterized in that, After determining the target temperature and humidity control mode of the fresh air system, the method further includes: Based on the target temperature and humidity control mode, the evaporator and condenser are determined in the first indoor heat exchanger and the second indoor heat exchanger; When the target temperature and humidity control mode is a mode requiring dehumidification, the compressor frequency is adjusted according to the evaporator's evaporation temperature; When the target temperature and humidity control mode is a mode that does not require dehumidification, the compressor frequency is adjusted according to the condenser's condensing temperature.

8. The method according to any one of claims 3 to 6, characterized in that, The outdoor side also includes an outdoor fan, and the indoor side also includes a supply fan; after determining the target temperature and humidity control mode of the fresh air system, the method further includes: Based on the target temperature and humidity control mode, determine the control priority of the supply fan, the exhaust fan and the outdoor fan; Adjust the speed of the supply fan, the exhaust fan, and the outdoor fan according to the control priority.

9. A device for dehumidification, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to perform the dehumidification method as described in any one of claims 3 to 8 when executing the program instructions.

10. A computer-readable storage medium storing program instructions, characterized in that, When the program instructions are executed, they cause the computer to perform the dehumidification method as described in any one of claims 3 to 8.

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