Air conditioning system for defrosting, method and device for air conditioning system, air conditioner

Abstract

The application relates to the air conditioning technical field and discloses an air conditioning system for defrosting. The air conditioning system comprises a defrosting assembly arranged outdoors and used for defrosting an outdoor heat exchanger; the defrosting assembly comprises a defrosting heat exchanger comprising a first flow channel and a second flow channel, the two ends of the first flow channel are respectively connected with the two ends of the outdoor heat exchanger to form a first circulating flow path; a heating piece, the two ends of the heating piece are connected with the two ends of the second flow channel to form a second circulating flow path; a heat storage piece is arranged in the second circulating flow path; wherein the first circulating flow path and the second circulating flow path are independently arranged. The air conditioning system of the application can make the defrosting operation independent of the refrigerant flow path in the refrigeration mode or the heating mode, so that the reversing operation of the four-way valve is not needed in the defrosting process, the indoor side will not be cooled, and the use experience of the user is improved. The application also discloses an air conditioning system method and device and an air conditioner.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, such as an air conditioning system for defrosting, a method and apparatus for air conditioning systems, and an air conditioner. Background Technology

[0002] Currently, during the heating operation of air conditioning units, the outdoor heat exchanger will frost up. When the frost reaches a certain level, the air conditioning unit needs to defrost the outdoor heat exchanger. In related technologies, defrosting is carried out by switching the cooling mode using a four-way valve.

[0003] In implementing the disclosed embodiments, at least the following problems were found in the related technology:

[0004] Defrosting via a four-way valve involves the low-temperature refrigerant passing through the indoor unit's piping during the defrosting process, which can affect the indoor temperature and fail to meet the user's heating needs, impacting the user's heating experience. Furthermore, frequent reversal of the four-way valve can shorten its lifespan. 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 an air conditioning system for defrosting, a method and apparatus for using an air conditioning system, and an air conditioner, to solve the technical problems of the air conditioning system affecting the user's heating experience and the service life of the four-way valve during the defrosting process.

[0007] In some embodiments, the air conditioning system includes: a heat exchange assembly including an outdoor heat exchanger; the air conditioning system further includes: a defrosting assembly disposed outdoors, the defrosting assembly being used to defrost the outdoor heat exchanger; the defrosting assembly includes: a defrosting heat exchanger including a first flow channel and a second flow channel, the two ends of the first flow channel being respectively connected to the two ends of the outdoor heat exchanger to form a first circulation path; a heating element, the two ends of the heating element being respectively connected to the two ends of the second flow channel to form a second circulation path, the heating element being used to heat the heat exchange medium located within the heating element; and a heat storage element disposed in the second circulation path, used to store heat in the heat exchange medium located within the heat storage element; wherein the first circulation path and the second circulation path are independently arranged.

[0008] In some embodiments, the control method of the air conditioning system includes: when the air conditioning system is operating in heating mode, acquiring a first temperature value of the heat exchange medium in the heat storage component; when the first temperature value is less than a first temperature threshold, controlling the defrosting component to enter energy storage mode; when the air conditioning system meets the defrosting conditions and the first temperature value is greater than or equal to the first temperature threshold, controlling the heat exchange component to stop operating, and controlling the first circulation path to be opened and starting the first pump body to defrost the outdoor heat exchanger.

[0009] In some embodiments, the control device of the air conditioning system includes: an acquisition module, configured to acquire a first temperature value of the heat exchange medium in the heat storage component when the air conditioning system is operating in heating mode; an energy storage module, configured to control the defrosting component to enter energy storage mode when the first temperature value is less than a first temperature threshold; and a defrosting module, configured to control the heat exchange component to stop operating and control the first circulation path to be opened and start the first pump body to defrost the outdoor heat exchanger when the air conditioning system meets the defrosting conditions and the first temperature value is greater than or equal to the first temperature threshold.

[0010] In some embodiments, the control device for the air conditioning system includes a processor and a memory storing program instructions, the processor being configured to execute the control method for the air conditioning system as described above when executing the program instructions.

[0011] In some embodiments, the air conditioner includes: an air conditioning system for defrosting as described above; or a control device for the air conditioning system as described above.

[0012] The air conditioning system, air conditioning system method and apparatus, and air conditioner for defrosting provided in this disclosure can achieve the following technical effects:

[0013] An air conditioning system includes a heat exchanger and a defrost unit. The heat exchanger is used to regulate the indoor temperature to achieve cooling or heating. The defrost unit is located outdoors, specifically in the outdoor unit. The defrost unit is used to defrost the outdoor heat exchanger when the frost layer on the outdoor heat exchanger reaches the required level for defrosting.

[0014] Specifically, the defrosting assembly includes two independent circulation paths: a first circulation path and a second circulation path. These paths are designed to circulate independently, meaning the refrigerant in the first path and the heat exchange medium in the second path circulate separately without converging. The first circulation path is formed by connecting the first flow channel of the defrosting heat exchanger to both ends of the outdoor heat exchanger. The second circulation path is formed by sequentially connecting the second flow channel, the heating element, and the heat storage element. The heat exchange medium in the second circulation path is heated by the heating element, and then its temperature is stored in the heat storage element. When defrosting is required, the flow in the second circulation path is controlled, and the temperature of the heat exchange medium in the second circulation path is transferred to the refrigerant in the first circulation path, raising its temperature and thus defrosting the outdoor heat exchanger.

[0015] The air conditioning system disclosed herein, by incorporating a defrosting assembly, forms a first circulation path and a second circulation path for defrosting the outdoor heat exchanger. By independently configuring the first and second circulation paths, the defrosting operation can be independent of the refrigerant flow path in either the cooling or heating mode of the air conditioning system. This eliminates the need for four-way valve reversal during defrosting, preventing temperature drop on the indoor side and improving the user experience. Simultaneously, it avoids the frequent reversal of the four-way valve for defrosting found in related technologies, thereby extending the lifespan of the four-way valve.

[0016] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0017] 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:

[0018] Figure 1 This is a schematic diagram of an air conditioning system provided in one embodiment of the present disclosure;

[0019] Figure 2 yes Figure 1 A schematic diagram of the heat exchange component of the air conditioning system in the embodiment shown;

[0020] Figure 3 This is a schematic diagram of an air conditioning system provided in another embodiment of this disclosure;

[0021] Figure 4 yes Figure 3 A schematic diagram of the heat exchange component of the air conditioning system in the embodiment shown;

[0022] Figure 5 yes Figure 1 A schematic diagram of the flow path of the air conditioning system in the heating mode of the embodiment shown.

[0023] Figure 6 yes Figure 1 A schematic diagram of the flow path in the energy storage mode of the air conditioning system in the illustrated embodiment;

[0024] Figure 7 yes Figure 1 A schematic diagram of the flow path of the air conditioning system in the defrost mode of the embodiment shown.

[0025] Figure 8 yes Figure 1 A schematic diagram of the flow path of the air conditioning system in the cooling mode of the embodiment shown;

[0026] Figure 9 This is a schematic flowchart of a control method for an air conditioning system provided in one embodiment of the present disclosure;

[0027] Figure 10 This is a schematic flowchart of a control method for an air conditioning system provided in one embodiment of the present disclosure;

[0028] Figure 11 This is a schematic flowchart of a control method for an air conditioning system provided in one embodiment of the present disclosure;

[0029] Figure 12 This is a schematic flowchart of a control method for an air conditioning system provided in one embodiment of the present disclosure;

[0030] Figure 13 This is a schematic diagram of the control device provided in an embodiment of this disclosure;

[0031] Figure 14 This is a schematic diagram of the structure of an air conditioner provided in an embodiment of this disclosure.

[0032] Figure label:

[0033] 1: Air conditioning system;

[0034] 10: Outdoor unit; 20: Indoor unit; 102: Compressor; 104: Outdoor heat exchanger; 106: Four-way valve; 108: Indoor heat exchanger; 110: Second valve body; 112: Third valve body; 114: Indoor fan;

[0035] 202 Defrosting heat exchanger; 210 First circulation flow path; 212 First flow channel; 214 First pump body; 216 First valve body; 220 Second circulation flow path; 222 Second flow channel; 224 Heating element; 226 Heat storage element; 228 Second pump body; 229 Electric heating element; 230 Energy storage flow path; 232 Electronic expansion valve;

[0036] 1300: Control device; 1302: Acquisition module; 1304: Energy storage module; 1306: Defrosting module.

[0037] 1400: Control device for air conditioning system; 1402: Processor; 1404: Memory; 1406: Communication interface; 1408: Bus. Detailed Implementation

[0038] 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.

[0039] Combination Figure 1 and Figure 3 As shown, the air conditioning system 1 in this embodiment includes a heat exchange assembly, which includes a compressor 102, a four-way valve 106, an outdoor heat exchanger 104 and an indoor heat exchanger 108 connected in sequence to form a circuit.

[0040] In some embodiments, such as Figures 1 to 8 As shown, the air conditioning system 1 further includes a defrosting assembly located outdoors, which is used to defrost the outdoor heat exchanger 104.

[0041] Specifically, such as Figures 1 to 4 As shown, the defrosting assembly includes a defrosting heat exchanger 202, a heating element 224, and a heat storage element 226. The defrosting heat exchanger 202 includes a first flow channel 212 and a second flow channel 222. The two ends of the first flow channel 212 are respectively connected to the two ends of the outdoor heat exchanger 104 to form a first circulation path 210. The two ends of the heating element 224 are respectively connected to the two ends of the second flow channel 222 to form a second circulation path 220. Furthermore, the first circulation path 210 and the second circulation path 220 are independently arranged. The heating element 224 is used to heat the heat exchange medium located within it. The heat storage element 226 is located in the second circulation path 220 and is used to store heat in the heat exchange medium located within it.

[0042] In this embodiment, the air conditioning system 1 includes a heat exchange component and a defrost component. The heat exchange component is used to regulate the indoor temperature to achieve cooling or heating. The defrost component is located outdoors, specifically in the outdoor unit 10. The defrost component is used to defrost the outdoor heat exchanger 104 when the frost layer on the outdoor heat exchanger 104 meets the defrost conditions.

[0043] Specifically, the defrosting assembly includes a first circulation path 210 and a second circulation path 220 that are independent of each other. By setting the first circulation path 210 and the second circulation path 220 to be independent of each other, that is, the refrigerant in the first circulation path 210 and the heat exchange medium in the second circulation path 220 circulate in their respective paths and do not converge.

[0044] In this design, the first flow channel 212 of the defrost heat exchanger 202 is connected to both ends of the outdoor heat exchanger 104 to form a first circulation flow path 210. The second flow channel 222, heating element 224, and heat storage element 226 of the defrost heat exchanger 202 are sequentially connected to form a second circulation flow path 220. The heat exchange medium in the second circulation flow path 220 has its temperature increased by the heating element 224, and then the heat exchange medium is heat-stored by the heat storage element 226. When defrosting is required, the flow in the second circulation flow path 220 is controlled, and the temperature of the heat exchange medium in the second circulation flow path 220 is transferred to the refrigerant in the first circulation flow path 210, causing the temperature of the refrigerant in the first circulation flow path 210 to rise, thereby achieving the purpose of defrosting the outdoor heat exchanger 104.

[0045] The air conditioning system 1 provided in this disclosure, by setting up a defrosting assembly, forms a first circulation path 210 and a second circulation path 220 for defrosting the outdoor heat exchanger 104. By setting the first circulation path 210 and the second circulation path 220 independently, the defrosting operation can be independent of the refrigerant flow path in the cooling or heating mode of the air conditioning system 1. This eliminates the need for reversing the four-way valve 106 during defrosting, preventing temperature drop on the indoor side and improving the user experience. Simultaneously, it avoids the frequent reversing of the four-way valve 106 for defrosting found in related technologies, thereby extending the service life of the four-way valve 106.

[0046] In some embodiments, such as Figure 1 and Figure 3 As shown, the defrosting assembly also includes: a first pump body 214, disposed in the first circulation path 210, the first pump body 214 being used to drive the refrigerant flow in the first circulation path 210; and a second pump body 228, disposed in the second circulation path 220, the second pump body 228 being used to drive the heat exchange medium flow in the second circulation path 220.

[0047] In this embodiment, a first pump body 214 is provided on the first circulation path 210. The first pump body 214 serves as the driving force for the refrigerant circulation within the first circulation path 210, thereby increasing the circulation speed of the refrigerant in the first circulation path 210 and thus improving the defrosting efficiency of the outdoor heat exchanger 104. By providing a second pump body 228 on the second circulation path 220, the second pump body 228 serves as the driving force for the circulation of the heat exchange medium within the second circulation path 220, enabling the heat exchange medium to circulate within the second circulation path 220. This results in a more uniform temperature of the heat exchange medium within the second circulation path 220, which is beneficial for improving the defrosting efficiency of the outdoor heat exchanger 104.

[0048] In some embodiments, such as Figure 2 and Figure 4 As shown, the defrosting assembly also includes an electric heating element 229, which is disposed in the heat storage element 226 and is used to heat the heat exchange medium in the heat storage element 226.

[0049] In this embodiment, an electric heating element 229 is provided on the heat storage element 226. The electric heating element 229 is used to heat the heat exchange medium in the heat storage element 226. In specific applications, if the energy stored in the heat exchange medium in the heat storage element 226 by the heating element 224 is insufficient, or if the heat storage is insufficient after a period of defrosting, the electric heating element 229 can be used to provide auxiliary heating to the heat exchange medium to supplement the energy stored in the heat exchange medium in the second circulation path 220, thereby improving the heat storage efficiency, defrosting efficiency, and defrosting effect.

[0050] Optionally, such as Figure 1 and Figure 2 As shown, in some embodiments, the electric heating element 229 can be integrated onto the heat storage element 226, forming a one-piece structure that facilitates installation.

[0051] Optionally, the defrosting heat transfer device includes a plate heat exchanger, which has high heat exchange efficiency, compact structure, and small space occupation, thereby improving the space utilization of the outdoor unit 10.

[0052] In some embodiments, the heat storage element 226 includes a heat storage chamber, and a defrost heat exchanger 202 is disposed in the heat storage chamber.

[0053] In this embodiment, the defrost heat exchanger 202 is disposed in the heat storage chamber. The heat storage element 226 achieves the heat storage function for both the refrigerant in the first flow channel 212 and the heat exchange medium in the second flow channel 222 of the defrost heat exchanger 202. This shortens the distance between the heat exchange medium after heat storage and the refrigerant in the first flow channel 212, thereby improving the heat exchange efficiency and the defrosting effect on the outdoor heat exchanger 104.

[0054] Optionally, such as Figure 3 and Figure 4 As shown, in some embodiments, the defrost heat exchanger 202, the heat storage element 226, and the electric heating element 229 are integrated into one unit to form an integrated heat storage and heat exchange module, which reduces the number of parts and improves assembly efficiency.

[0055] In some embodiments, such as Figure 2 and Figure 4 As shown, the heating element 224 includes a solar heating element 224.

[0056] In this embodiment, the heating element 224 in the defrosting assembly is selected as a solar heating element 224. By using solar energy to charge the heat exchange medium in the second circulation path 220 of the defrosting assembly, the defrosting effect is effectively achieved by utilizing clean energy, thus realizing the effective utilization of clean energy and reducing the actual operating energy consumption of the unit.

[0057] In some embodiments, the heating element 224 includes a heat pump heating element 224.

[0058] In this embodiment of the present disclosure, the heating element 224 in the defrosting assembly is selected as a heat pump heating element 224. By introducing the heat exchange medium in the heat pump system into the second circulation path 220, the energy storage of the defrosting assembly through the heat pump assembly is realized, thereby achieving full utilization of energy.

[0059] In some embodiments, the heating element 224 includes a floor heating element 224.

[0060] In this embodiment of the present disclosure, the heating element 224 in the defrosting assembly is selected as the underfloor heating element 224. By introducing the heat exchange medium in the underfloor heating element 224 into the second circulation path 220, the energy is fully utilized by the energy storage of the heat exchange medium in the defrosting assembly through the underfloor heating element 224.

[0061] In some embodiments, such as Figure 1 and Figure 3 As shown, the defrosting assembly also includes: a first valve body 216, disposed in the first circulation path 210, the first valve body 216 being used to control the first circulation path 210 to be open or closed.

[0062] In this embodiment of the present disclosure, a first valve body 216 for controlling the opening or closing of the flow path is provided on the first circulation flow path 210. By setting the first valve body 216, the opening or closing of the defrosting component can be controlled according to the operating mode of the air conditioning system 1.

[0063] In specific applications, such as Figure 7As shown (the bolded lines in the figure represent the operating flow path), when the air conditioning system 1 needs to perform a defrost operation, it operates in defrost mode, which includes: controlling the compressor 102 to stop running, controlling the first valve body 216 to open, thereby enabling the refrigerant in the first circulation flow path 210 to circulate. After the refrigerant in the first circulation flow path 210 exchanges heat with the second circulation flow path 220, the refrigerant temperature rises, thereby achieving defrosting of the outdoor heat exchanger 104.

[0064] When the air conditioning system 1 does not require defrosting, the first valve body 216 is closed, and the heat exchange components operate normally. Figure 8 The cooling mode shown or as Figure 5 The heating mode shown is used for operation. Figure 5 and Figure 8 The thickened section in the middle represents the refrigerant flow path, which is used to regulate the indoor temperature. The first valve body 216 controls the defrosting assembly based on the operating status of the air conditioning system 1. This means the defrosting assembly's settings do not affect other operating modes of the air conditioning system 1; when defrosting is needed, only the defrosting assembly needs to be controlled, which can stop the compressor 102. The compressor 102 is not continuously running, thus reducing energy consumption.

[0065] In some embodiments, the air conditioning system 1 further includes: an energy storage flow path 230, one end of which is connected to the first circulation flow path 210, and the other end of which is connected to the exhaust port of the compressor 102; and an electronic expansion valve 232, which is disposed in the energy storage flow path 230 and is used to adjust the opening of the energy storage flow path 230.

[0066] In the embodiments disclosed herein, such as Figure 1 , Figure 3 and Figure 6 As shown, the air conditioning system 1 also includes an energy storage flow path 230 and an electronic expansion valve 232 disposed in the energy storage flow path 230. By providing the energy storage flow path 230, when the heat storage temperature of the heat exchange medium in the second circulation flow path 220 cannot meet the defrosting requirements, such as... Figure 6 As shown (the thickened lines in the figure represent the flow path), by adjusting the opening of the electronic expansion valve 232, high-temperature refrigerant can be injected into the first circulation flow path 210 through the energy storage flow path 230, and then the temperature can be transferred to the second circulation flow path 220 through the defrost heat exchanger 202, thereby achieving the energy storage effect on the heat exchange medium in the second circulation flow path 220. By setting the energy storage flow path 230, the auxiliary energy storage function of the second circulation flow path 220 is achieved.

[0067] Furthermore, by setting an electronic expansion valve 232, the opening degree of the energy storage flow path 230 can be controlled. When it is necessary to open the energy storage flow path 230 for energy storage, the opening degree of the electronic expansion valve 232 is increased. The adjustment of the opening degree can be determined according to the difference between the current heat storage temperature of the heat exchange medium in the second circulation flow path 220 and the target defrosting temperature, so as to achieve effective energy storage replenishment.

[0068] In some embodiments, such as Figure 1 , Figure 3 and Figures 5 to 8 As shown, the heat exchange assembly also includes a second valve body 110 and a third valve body 112. The four-way valve 106 includes a first port D, a second port C, a third port S, and a fourth port E. The exhaust port of the compressor 102 is connected to the first port, one end of the outdoor heat exchanger 104 is connected to the second port, and the return port of the compressor 102 is connected to the third port. One end of the indoor heat exchanger 108 is connected to the other end of the outdoor heat exchanger 104, and the other end of the indoor heat exchanger 108 is connected to the fourth port. The second valve body 110 is located in the refrigerant pipeline between the outdoor heat exchanger 104 and the second port. The third valve body 112 is located in the refrigerant pipeline between the outdoor heat exchanger 104 and the indoor heat exchanger 108.

[0069] In this embodiment, the exhaust port of compressor 102 is connected to the first interface, one end of outdoor heat exchanger 104 is connected to the second interface, the other end of outdoor heat exchanger 104 is connected to one end of indoor heat exchanger 108, the other end of indoor heat exchanger 108 is connected to the fourth interface, and the return port of compressor 102 is connected to the third interface. Wherein, as... Figure 5 As shown, in heating mode, the first port D and the fourth port E of the four-way valve 106 are connected, and the second port C and the third port S are connected. Refrigerant flows from the exhaust port of the compressor 102 through the first and fourth ports of the four-way valve 106 into the indoor heat exchanger 108, and then through the outdoor heat exchanger 104 and the second and third ports of the four-way valve 106 into the return port of the compressor 102, completing the operation in heating mode. Figure 8 As shown, when the cooling mode is required, the four-way valve 106 is controlled to switch so that the first port D of the four-way valve 106 is connected to the second port C, and the third port S and the fourth port E are connected.

[0070] Furthermore, a second valve body 110 is provided in the refrigerant pipeline between the outdoor heat exchanger 104 and the second interface. The second valve body 110 is used to control the opening or closing of the refrigerant pipeline between the outdoor heat exchanger 104 and the second interface; a third valve body 112 is provided in the refrigerant pipeline between the outdoor heat exchanger 104 and the indoor heat exchanger 108, and the third valve body 112 is used to control the opening or closing of the refrigerant pipeline between the outdoor heat exchanger 104 and the indoor heat exchanger 108.

[0071] In specific applications, when running in cooling mode (such as...) Figure 8 (as shown) or heating mode (such as) Figure 5 In the case shown), the second valve body 110 and the third valve body 112 are in the open state, that is, the refrigerant pipeline is in the conductive state. Figure 7 As shown, when defrosting mode is activated, the compressor 102 is stopped, the second valve body 110 and the third valve body 112 are closed, and the first valve body 216 is opened to allow the first circulation path 210 to circulate. By closing the third valve body 112, refrigerant is prevented from entering the indoor side. Since the refrigerant does not circulate on the indoor side, there is no issue of cooling or refrigerant noise during the defrosting process, enhancing the user experience. Furthermore, during defrosting, the compressor 102 remains stopped, reducing energy consumption during long-term operation. Figure 6 As shown, when operating in energy storage mode, the second valve body 110 and the third valve body 112 are in the open state, that is, the refrigerant pipeline is in the conductive state. While operating in heating mode, it can realize the energy storage function of the defrosting component.

[0072] Specifically, the first valve body 216, the second valve body 110, and the third valve body 112 can all be solenoid valves, which facilitates control and is easy to implement.

[0073] In some embodiments, the air conditioning system 1 further includes: a first temperature sensor disposed within the heat storage element 226 for detecting the temperature of the heat exchange medium within the heat storage element 226; a second temperature sensor disposed within the heating element 224 for detecting the temperature of the heat exchange medium within the heating element 224; and a first pressure sensor disposed within the first circulation path 210 for detecting the pressure of the first circulation path 210.

[0074] In some embodiments, the air conditioning system 1 further includes: a first filter, which is provided with an energy storage flow path 230 and located on both sides of the electronic expansion valve 232 for filtering the refrigerant.

[0075] In some embodiments, the air conditioning system 1 further includes: an outdoor fan, corresponding to the outdoor heat exchanger 104; and a second pressure sensor, disposed at the return port of the compressor 102, for detecting the return pressure at the return port of the compressor 102.

[0076] like Figure 9 As shown in the figure, this disclosure provides a control method for an air conditioning system, including:

[0077] S902, when the air conditioning system is operating in heating mode, obtain the first temperature value of the heat exchange medium in the heat storage component;

[0078] S904, determine whether the first temperature value is greater than or equal to the first temperature threshold;

[0079] S906, when the first temperature value is less than the first temperature threshold, control the defrosting component to enter the energy storage mode;

[0080] S908, when the air conditioning system meets the defrosting conditions and the first temperature value is greater than or equal to the first temperature threshold, controls the heat exchange component to stop operating, controls the first circulation path to be opened and starts the first pump body to defrost the outdoor heat exchanger.

[0081] In this embodiment of the air conditioning system, in any of the above embodiments, when operating in heating mode, the system acquires a first temperature value of the heat exchange medium within the heat storage element of the defrost assembly. Based on a comparison between the first temperature value and a first temperature threshold, it determines whether the temperature of the heat exchange medium within the defrost assembly meets the defrosting requirements. If the first temperature value is less than the first temperature threshold, it indicates that the current temperature of the heat exchange medium within the defrost assembly is too low and does not meet the defrosting temperature requirements. The system then controls itself to operate in energy storage mode, thereby increasing the temperature of the heat exchange medium by storing energy in the defrost assembly. If the first temperature value is greater than or equal to the first temperature threshold, it indicates that the current temperature of the heat exchange medium meets the defrosting requirements.

[0082] Therefore, if the air conditioning system meets the defrosting conditions and the first temperature value is greater than or equal to the first temperature threshold, the air conditioning system is controlled to enter defrosting mode, such as... Figure 7 As shown. Specifically, the heat exchange components are stopped, the first circulation path is opened, and the first pump is started. By stopping the heat exchange components, refrigerant will not enter the indoor side during defrosting, meaning that the indoor side will not be cooled during defrosting. Simultaneously, the absence of refrigerant flow on the indoor side further reduces indoor noise, achieving defrosting of the outdoor heat exchanger and improving the user experience. By opening the first circulation path, heat exchange with the second circulation path increases the temperature of the refrigerant in the first circulation path, accelerating its circulation under the drive of the first pump, thereby improving the defrosting efficiency of the outdoor heat exchanger.

[0083] Furthermore, compared to existing technologies that use four-way valve reversal or bypass refrigerant for defrosting, both of which involve the compressor operating at high frequency and resulting in high energy consumption, the air conditioning system control method used in this disclosure stops the heat exchange components during defrosting, thereby reducing energy consumption during long-term operation of the heat exchange components.

[0084] In some embodiments, such as Figure 10As shown in the figure, this disclosure provides a control method for an air conditioning system, including:

[0085] S1002, when the air conditioning system is operating in heating mode, obtain the first temperature value of the heat exchange medium in the heat storage component;

[0086] S1004, when the air conditioning system meets the defrosting conditions and the first temperature value is greater than or equal to the first temperature threshold, control the heat exchange component to stop operating, control the first circulation path to be opened and start the first pump body to defrost the outdoor heat exchanger.

[0087] S1006, during the defrosting process, obtain the second temperature value of the heat exchange medium inside the heating element;

[0088] S1008, Calculate the difference between the second temperature value and the first temperature value;

[0089] S1010, determine whether the difference is greater than the second temperature threshold;

[0090] S1012, if the difference is greater than the second temperature threshold, control the second pump of the defrosting assembly to start;

[0091] S1014, when the difference is less than or equal to the second temperature threshold, control the electric heating element of the defrosting assembly to start.

[0092] In the embodiments of this disclosure, during the defrosting process, the temperature of the heat exchange medium in the heating element is acquired, and based on the difference between the second temperature value of the heat exchange medium in the heating element and the first temperature value of the heat exchange medium in the heat storage element, it is determined which method is selected to supplement the defrosting capacity of the second circulation path.

[0093] Specifically, when the temperature difference exceeds the second temperature threshold, the temperature difference between the heat exchange medium in the heating element and the heat exchange medium in the heat storage element is significant, with the heat exchange medium in the heating element being slightly warmer. Consequently, the second pump is activated to drive the heat exchange medium in the second circulation path to circulate. The relatively high-temperature heat exchange medium in the heating element mixes with the heat exchange medium in the remaining portion of the second circulation path, thereby increasing the temperature of the heat exchange medium in the defrost heat exchanger. This supplements the defrost capacity of the defrost heat exchanger, ensuring the defrost effect.

[0094] When the temperature difference is less than or equal to the second temperature value, it indicates that the temperature difference between the heat exchange medium in the heating element and the heat exchange medium in the heat storage element is small. Therefore, the effect of supplementing defrosting capacity through the heating element will be minimal. In this case, the electric heating element is activated to heat the heat exchange medium in the second circulation path to supplement the defrosting capacity. To further enhance defrosting capacity, while the electric heating element is activated, the second pump can also be kept running to accelerate the temperature equalization of the heat exchange medium in the second circulation path, thereby ensuring the defrosting effect.

[0095] In any of the embodiments of the present disclosure described above, the heat exchange assembly further includes: a compressor and a first valve body and a second valve body disposed on the refrigerant pipeline. The step of controlling the heat exchange assembly to stop operating specifically includes: controlling the compressor to stop operating, and controlling the first valve body and the second valve body to close.

[0096] In the embodiments of this disclosure, a second valve body is provided in the refrigerant pipeline between the outdoor heat exchanger and the second interface. A third valve body is provided in the refrigerant pipeline between the outdoor heat exchanger and the indoor heat exchanger. In specific applications, in defrost mode, the compressor is controlled to stop running, and the second and third valve bodies are controlled to close, so that the first circulation path circulates, preventing refrigerant from entering the indoor side. The refrigerant does not run on the indoor side, thus avoiding the problems of cooling or refrigerant noise during the defrost process on the indoor side, enhancing the user experience. Furthermore, during the defrost process, the compressor is in a stopped state, reducing energy consumption during long-cycle operation.

[0097] In some embodiments, the heat exchange assembly further includes a compressor and an indoor fan, and the defrosting assembly further includes an energy storage flow path, the two ends of which are respectively connected to the compressor's exhaust port and a first circulation flow path, such as... Figure 11 As shown in the figure, this disclosure provides a control method for an air conditioning system, including:

[0098] S1102, when the air conditioning system is operating in heating mode, obtain the first temperature value of the heat exchange medium in the heat storage component;

[0099] S1104, when the first temperature value is less than the first temperature threshold, obtain the second temperature value of the heat exchange medium in the heating element;

[0100] S1106, Calculate the difference between the second temperature value and the first temperature value;

[0101] S1108, determine whether the difference is greater than the second temperature threshold;

[0102] S1110, if the difference is greater than the second temperature threshold, control the second pump body of the defrosting component to start;

[0103] S1112, when the difference is less than or equal to the second temperature threshold, obtain the return gas pressure of the compressor;

[0104] S1114, Determine whether the return gas pressure is greater than or equal to the first pressure threshold;

[0105] S1116, when the return gas pressure is greater than or equal to the first pressure threshold, control the energy storage flow path of the defrosting component to be opened.

[0106] S1118, when the return gas pressure is less than the first pressure threshold, determine whether the return gas pressure is greater than or equal to the second pressure threshold.

[0107] S1120, when the return air pressure is greater than or equal to the second pressure threshold, controls the energy storage flow path to open and controls the indoor fan speed to decrease to a preset level.

[0108] S1122, when the return gas pressure is less than the second pressure threshold, control the electric heating element of the defrosting component to start; wherein, the first temperature threshold is greater than the second temperature threshold, and the first pressure threshold is greater than the second pressure threshold.

[0109] In the embodiments of this disclosure, when the air conditioning system is operating in heating mode, if the first temperature value is less than the first temperature threshold, it indicates that the current temperature value of the heat exchange medium in the defrost assembly is low and does not meet the defrost temperature requirements. Then, the system enters the energy storage mode, and the defrost assembly stores energy so that the temperature of the heat exchange medium in the second circulation path can meet the defrost requirements.

[0110] Specifically, the method for storing energy in the heat exchange medium within the heat storage element is determined by the difference between the second temperature value of the heat exchange medium in the heating element and the first temperature value of the heat exchange medium in the heat storage element.

[0111] Specifically, when the temperature difference is greater than the second temperature threshold, the temperature difference between the heat exchange medium in the heating element and the heat exchange medium in the heat storage element is large, and the temperature of the heat exchange medium in the heating element is higher. Then, by starting the second pump body, the heat exchange medium in the second circulation path is driven to circulate, and the relatively high temperature heat exchange medium in the heating element stores energy for the heat exchange medium in the heat storage element.

[0112] When the temperature difference is less than or equal to the second temperature threshold, it indicates that the temperature difference between the heat exchange medium in the heating element and the heat exchange medium in the heat storage element is small, and the energy storage effect through the heating element will also be small. In this case, the return gas pressure at the return port is further obtained, and based on the return gas pressure, it is determined whether the heat storage flow path can be opened. This is because opening the heat storage flow path would result in an excessively low return gas pressure at the return port, which would damage the compressor. This disclosure, by judging the return gas pressure at the return port to determine whether the heat storage flow path can be opened, ensures the normal operation of the compressor while storing energy.

[0113] Specifically, if the return gas pressure is greater than or equal to the first pressure threshold, it means that the current return gas pressure at the return gas port can be controlled to conduct the energy storage flow path without damaging the compressor. In this case, the energy storage flow path of the defrosting component is controlled to conduct, so as to realize the energy storage of the heat exchange medium in the heat storage component.

[0114] If the return air pressure is less than the first pressure threshold but greater than or equal to the second pressure threshold, it indicates that the current return air pressure at the return air inlet is somewhat insufficient. In this case, the indoor fan speed can be reduced to a preset level and the energy storage flow path can be opened. By controlling the indoor fan speed to reduce the operating load on the outdoor unit, the frost formation can be prevented from worsening, thus reducing the loss in the energy storage flow path. This ensures that the pressure at the return air inlet can meet the operating requirements of the compressor, thereby preventing damage to the compressor.

[0115] If the return gas pressure is lower than the second pressure threshold, it indicates that the current return gas pressure at the return port is insufficient for simultaneous operation of the heating and energy storage flow paths. Therefore, the electric heating element of the defrosting assembly is activated to store energy in the heat exchange medium within the heat storage device. Understandably, to achieve rapid energy storage, the second pump can also be activated to circulate the heat exchange medium within the second circulation path.

[0116] When the defrosting component is in energy storage mode, the heat exchange component of the air conditioning system is still in heating mode, which can meet the indoor temperature requirements and store energy for the defrosting component in preparation for defrosting.

[0117] like Figure 12 As shown in the figure, this disclosure provides a control method for an air conditioning system, including:

[0118] S1202, when the air conditioning system is operating in heating mode, obtain the first temperature value of the heat exchange medium in the heat storage element and the second temperature value of the heat exchange medium in the heating element.

[0119] S1204, Determine whether the air conditioning system meets the defrosting conditions;

[0120] S1206, under the condition that the air conditioning system meets the defrosting conditions, determine whether the first temperature value is greater than the first temperature threshold.

[0121] S1208, when the first temperature value is less than the first temperature threshold, control the indoor fan speed to be reduced by a preset level;

[0122] S1210, Calculate the difference between the second temperature value and the first temperature value;

[0123] S1212, determine whether the difference is greater than the second temperature threshold;

[0124] S1214, if the difference is greater than the second temperature threshold, control the second pump of the defrosting assembly to start;

[0125] S1216, when the difference is less than or equal to the second temperature threshold, obtain the return gas pressure of the compressor;

[0126] S1218, Determine whether the return gas pressure is greater than or equal to the first pressure threshold;

[0127] S1220, when the return gas pressure is greater than or equal to the first pressure threshold, controls the energy storage flow path of the defrosting component to be opened.

[0128] S1222, when the return gas pressure is less than the first pressure threshold, determine whether the return gas pressure is greater than or equal to the second pressure threshold.

[0129] S1224, when the return air pressure is greater than or equal to the second pressure threshold, controls the energy storage flow path to open and controls the indoor fan speed to decrease to the set level.

[0130] S1226, when the return gas pressure is less than the second pressure threshold, control the electric heating element of the defrosting component to start;

[0131] S1228, when the air conditioning system meets the defrosting conditions and the first temperature value is greater than or equal to the first temperature threshold, control the compressor to stop running, control the second valve body and the third valve body to close, and control the first valve body to open and start the first pump body;

[0132] S1230, the defrosting runtime is timed if the defrosting exit conditions are not met;

[0133] S1232, determine whether the defrosting runtime is greater than or equal to the runtime threshold;

[0134] S1234, When the defrosting runtime is greater than or equal to the duration threshold, calculate the difference between the second temperature value and the first temperature value;

[0135] S1236, determine whether the difference is greater than the second temperature threshold;

[0136] S1238, if the difference is greater than the second temperature threshold, control the second pump of the defrosting component to start;

[0137] S1240 controls the electric heating element of the defrosting assembly to start when the difference is less than or equal to the second temperature threshold.

[0138] S1242, if the air conditioning system does not meet the defrosting conditions, determine whether the first temperature value is less than the first temperature threshold.

[0139] S1244, if the first temperature value is less than the first temperature threshold, calculate the difference between the second temperature value and the first temperature value;

[0140] S1246, determine whether the difference is greater than the second temperature threshold;

[0141] S1248, if the difference is greater than the second temperature threshold, control the second pump of the defrosting assembly to start;

[0142] S1250, when the difference is less than or equal to the second temperature threshold, obtains the compressor's return gas pressure;

[0143] S1252, determine whether the return gas pressure is greater than or equal to the first pressure threshold;

[0144] S1254, when the return gas pressure is greater than or equal to the first pressure threshold, controls the energy storage flow path of the defrosting component to be opened.

[0145] S1256, when the return gas pressure is less than the first pressure threshold, determine whether the return gas pressure is greater than or equal to the second pressure threshold.

[0146] S1258, when the return air pressure is greater than or equal to the second pressure threshold, controls the energy storage flow path to open and controls the indoor fan speed to decrease to a preset level.

[0147] S1260, when the return gas pressure is less than the second pressure threshold, controls the electric heating element of the defrosting component to start;

[0148] S1262, during the defrosting process, determine whether the air conditioning system meets the defrosting exit conditions;

[0149] If S1264 is satisfied, the defrosting mode will end and the heating mode will start.

[0150] Among them, the first temperature threshold is greater than the second temperature threshold, and the first pressure threshold is greater than the second pressure threshold.

[0151] In embodiments of this disclosure, the air conditioning system further includes an indoor fan, which is configured corresponding to an indoor heat exchanger. When the air conditioning system meets the defrosting conditions, but the temperature of the heat exchange medium in the heat storage component fails to meet the defrosting requirements, the indoor fan speed is first reduced to a preset level to decrease the operating load on the outdoor unit, thereby preventing further frost buildup. Then, the defrosting components are controlled to perform energy storage operations to meet the defrosting requirements.

[0152] In the embodiments of this disclosure, before obtaining the second temperature value of the heat exchange medium in the heating element during the defrosting process, the method further includes: if the defrosting exit condition is not met, timing the defrosting runtime, determining the magnitude of the defrosting runtime and a time threshold, and judging the energy consumption of the heat exchange medium in the defrosting assembly by comparing the defrosting runtime with the time threshold. When the defrosting runtime is greater than or equal to the time threshold, it indicates that the temperature of the heat exchange medium in the defrosting assembly has reached a preset value, and the effect of continuing defrosting is not good. It is necessary to replenish the heat exchange medium in the defrosting assembly with heat, and then proceed to the step of obtaining the second temperature value of the heat exchange medium in the heating element and selecting the energy replenishment method. By comparing the defrosting runtime with the time threshold during the defrosting process, timely replenishment of the energy storage of the heat exchange medium in the second circulation path can ensure the defrosting effect and improve the defrosting efficiency.

[0153] In some embodiments, the control method for the air conditioning system includes: controlling the defrosting component to shut down when the air conditioning system is operating in cooling mode.

[0154] In embodiments of this disclosure, such as Figure 8 As shown, when the air conditioning system enters cooling mode, the defrosting assembly is shut down to reduce energy consumption. The steps for shutting down the defrosting assembly include: closing the first valve and first pump in the first circulation path, closing the second pump and electric heating element in the second circulation path, and closing the electronic expansion valve in the energy storage path. The relevant components of the air conditioning system's heat exchange assembly operate according to the cooling mode control.

[0155] In some embodiments, the settings of the first temperature threshold, the second temperature threshold, the first pressure threshold, the second pressure threshold, the preset level, and the duration threshold are all specifically set according to the unit parameters of the air conditioner in the specific application, and are not specifically limited here.

[0156] In some embodiments, the defrosting conditions are determined by methods such as judging the outdoor unit coil temperature, judging the compressor operating status, and judging the defrosting interval time, to determine whether to enter the defrosting mode, and the exit of the defrosting mode is controlled by the defrosting end conditions. The defrosting conditions and defrosting end conditions are controlled according to conventional control conditions, and no specific restrictions or regulations are made here.

[0157] Optionally, during defrosting mode operation, the oil return control mode of the air conditioning system is disabled, while the exhaust temperature protection control, high pressure protection and low pressure protection of the air conditioning system are still maintained. The relevant control protection is completed by adjusting the control compressor frequency to ensure the normal operation of the system.

[0158] This disclosure provides a control device 1300 for an air conditioning system, comprising: an acquisition module 1302, used to acquire a first temperature value of the heat exchange medium in the heat storage component when the air conditioning system is operating in heating mode; an energy storage module 1304, used to control the defrosting component to enter energy storage mode when the first temperature value is less than a first temperature threshold; and a defrosting module 1306, used to control the heat exchange component to stop operating and control the first circulation path to be opened and start the first pump body to defrost the outdoor heat exchanger when the air conditioning system meets the defrosting conditions and the first temperature value is greater than or equal to the first temperature threshold.

[0159] In embodiments of this disclosure, the control device 1300 is used in any of the above embodiments of the air conditioning system, such as... Figure 13 As shown, the control device 1300 includes an acquisition module 1302, an energy storage module 1304, and a defrost module 1306. The acquisition module 1302 is used to acquire the first temperature value of the heat exchange medium within the heat storage element of the defrost assembly when the air conditioning system is operating in heating mode. The energy storage module 1304 is used to determine whether the temperature of the heat exchange medium within the defrost assembly meets the defrost requirements based on a comparison between the first temperature value and a first temperature threshold. If the first temperature value is less than the first temperature threshold, it indicates that the current temperature of the heat exchange medium within the defrost assembly is too low and does not meet the defrost temperature requirements. The module then increases the temperature of the heat exchange medium by storing energy in the defrost assembly. If the first temperature value is greater than or equal to the first temperature threshold, it indicates that the current temperature of the heat exchange medium meets the defrost requirements.

[0160] The defrosting module 1306 is used to control the air conditioning system to enter defrosting mode when the defrosting conditions are met and the first temperature value is greater than or equal to the first temperature threshold. Specifically, it controls the heat exchange components to stop operating, controls the first circulation path to open, and starts the first pump. By controlling the heat exchange components to stop operating, refrigerant will not enter the indoor side during defrosting, meaning that the indoor side will not be cooled during defrosting. Simultaneously, since there is no refrigerant flow on the indoor side, indoor noise is further reduced, achieving defrosting of the outdoor heat exchanger and improving the user experience. By controlling the first circulation path to open, heat exchange with the second circulation path increases the temperature of the refrigerant in the first circulation path, accelerating circulation under the drive of the first pump, thereby improving the defrosting efficiency of the outdoor heat exchanger.

[0161] Furthermore, compared to existing technologies that use four-way valve reversal or bypass refrigerant for defrosting, both of which involve the compressor operating at high frequency and resulting in high energy consumption, the air conditioning system control device in this embodiment controls the heat exchange components to stop operating during defrosting, thereby reducing energy consumption during long-term operation of the heat exchange components.

[0162] Optionally, the defrosting module is also used to obtain a second temperature value of the heat exchange medium in the heating element during the defrosting process; when the difference between the second temperature value and the first temperature value is greater than a second temperature threshold, control the second pump body of the defrosting assembly to start; when the difference between the second temperature value and the first temperature value is less than or equal to the second temperature threshold, control the electric heating element of the defrosting assembly to start.

[0163] Optionally, the heat exchange assembly further includes: a compressor and a first valve body and a second valve body disposed on the refrigerant pipeline. The steps of controlling the heat exchange assembly to stop operating specifically include: controlling the compressor to stop operating and controlling the first valve body and the second valve body to close.

[0164] Optionally, the heat exchange assembly further includes a compressor and an indoor fan. The energy storage module is specifically used to obtain a second temperature value of the heat exchange medium within the heating element; when the difference between the second temperature value and the first temperature value is greater than a second temperature threshold, control the second pump of the defrosting assembly to start; when the difference between the second temperature value and the first temperature value is less than or equal to the second temperature threshold, obtain the return gas pressure of the compressor; when the return gas pressure is greater than or equal to a first pressure threshold, control the energy storage flow path of the defrosting assembly to be open; when the return gas pressure is less than the first pressure threshold but greater than or equal to the second pressure threshold, control the energy storage flow path to be open and control the speed of the indoor fan to be reduced by a preset level; when the return gas pressure is less than the second pressure threshold, control the electric heating element of the defrosting assembly to start; wherein, the first temperature threshold is greater than the second temperature threshold, and the first pressure threshold is greater than the second pressure threshold.

[0165] Optionally, the heat exchange component also includes an indoor fan. When the air conditioning system meets the defrosting conditions and the first temperature value is less than the first temperature threshold, before the step of controlling the defrosting component to enter the energy storage mode, the component further includes: controlling the speed of the indoor fan to be reduced to a preset level.

[0166] Optionally, the control module is used to control the defrosting components to shut down when the air conditioning system is operating in cooling mode.

[0167] This disclosure provides a control device 1400 for an air conditioning system, the structure of which is as follows: Figure 14 As shown, it includes:

[0168] The processor 1402 and memory 1404 may further include a communication interface 1406 and a bus 1408. The processor 1402, communication interface 1406, and memory 1404 can communicate with each other via the bus 1408. The communication interface 1406 can be used for information transmission. The processor 1402 can call logical instructions stored in the memory 1404 to execute the control method of the air conditioning system described in the above embodiment.

[0169] The memory 1404, 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 1402 executes functional applications and data processing by running the program instructions / modules stored in the memory 1404, thereby implementing the control method of the air conditioning system in the above method embodiments.

[0170] This disclosure provides an air conditioner, including: an air conditioning system 1 for defrosting as described above; or a control device for the air conditioning system as described above. Therefore, it possesses all the beneficial effects of the above embodiments, which will not be repeated here.

[0171] Optionally, the air conditioner includes an outdoor unit 10 and an indoor unit 20. The compressor 104, outdoor heat exchanger 104, and defrost assembly are housed within the outdoor unit 10. The indoor heat exchanger 108 and indoor fan 114 are housed within the indoor unit 20. A third valve 112 is installed on the refrigerant pipeline between the indoor and outdoor heat exchangers 104, located on the outdoor unit. This prevents refrigerant from operating on the indoor side during defrosting, thus avoiding cooling issues or refrigerant noise during the defrosting process and enhancing the user experience.

[0172] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to execute the control method of the air conditioning system described above.

[0173] This disclosure provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions that, when executed by a computer, cause the computer to perform the control method of the air conditioning system described above.

[0174] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0175] The foregoing description and accompanying drawings fully illustrate embodiments of the present 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 or replace parts and features of other embodiments. The scope of the embodiments of this disclosure includes the entire scope of the claims and all available equivalents of the claims. While the terms “first,” “second,” etc., may be used in this application to describe elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be called a second element without changing the meaning of the description, and similarly, a second element may be called a first element, provided that all occurrences of “first element” are consistently renamed and all occurrences of “second element” are consistently renamed. First and second elements are both elements, but may not be the same element. Moreover, the terminology used in this application is only for describing embodiments and is not intended to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” are intended to also include the plural forms. Similarly, the term “and / or” as used herein means including one or more of the associated listed elements and all possible combinations thereof. Additionally, when used herein, the terms “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 “comprising an…” does not exclude the presence of additional 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.

[0176] 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.

[0177] 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.

[0178] 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. An air conditioning system for defrosting, the air conditioning system comprising a heat exchange assembly, the heat exchange assembly including an outdoor heat exchanger, characterized in that, The air conditioning system also includes: A defrosting assembly, located outdoors, is used to defrost the outdoor heat exchanger; The defrosting component includes: The defrosting heat exchanger includes a first flow channel and a second flow channel, wherein the two ends of the first flow channel are respectively connected to the two ends of the outdoor heat exchanger to form a first circulation flow path; A heating element, the two ends of which are connected to the two ends of the second flow channel to form a second circulation flow path, the heating element being used to heat the heat exchange medium located within the heating element; A heat storage element is disposed in the second circulation path and is used to store heat for the heat exchange medium located in the heat storage element; A first pump body is disposed in the first circulation path, and the first pump body is used to drive the refrigerant flow in the first circulation path. The first circulation path and the second circulation path are set independently of each other.

2. The air conditioning system according to claim 1, characterized in that, The defrosting assembly also includes: The second pump body is located in the second circulation path and is used to drive the flow of the heat exchange medium in the second circulation path.

3. The air conditioning system according to claim 1, characterized in that, The defrosting assembly also includes: An electric heating element is disposed in the heat storage element and is used to heat the heat exchange medium inside the heat storage element.

4. The air conditioning system according to claim 3, characterized in that, The heat storage component includes a heat storage chamber, and the defrosting heat exchanger is disposed inside the heat storage chamber.

5. The air conditioning system according to any one of claims 1 to 4, characterized in that, The heating element includes a solar heating element, a heat pump heating element, or a floor heating element.

6. The air conditioning system according to any one of claims 1 to 4, characterized in that, The defrosting assembly also includes: A first valve body is disposed in the first circulation path, and the first valve body is used to control the opening or closing of the first circulation path.

7. The air conditioning system according to any one of claims 1 to 4, characterized in that, The air conditioning system also includes: compressor; An energy storage flow path, one end of which is connected to the first circulation flow path, and the other end of which is connected to the exhaust port of the compressor; An electronic expansion valve is provided in the energy storage flow path, and the electronic expansion valve is used to adjust the opening degree of the energy storage flow path.

8. The air conditioning system according to any one of claims 1 to 4, characterized in that, The heat exchange assembly also includes: compressor; The four-way valve includes a first port, a second port, a third port and a fourth port. The exhaust port of the compressor is connected to the first port, one end of the outdoor heat exchanger is connected to the second port, and the return port of the compressor is connected to the third port. An indoor heat exchanger, one end of which is connected to the other end of the outdoor heat exchanger, and the other end of which is connected to the fourth interface; The second valve body is located in the refrigerant pipeline between the outdoor heat exchanger and the second interface; The third valve body is located in the refrigerant pipeline between the outdoor heat exchanger and the indoor heat exchanger.

9. A control method for an air conditioning system, characterized in that, For an air conditioning system as described in any one of claims 1 to 8, the method comprises: When the air conditioning system is operating in heating mode, the first temperature value of the heat exchange medium in the heat storage device is obtained; When the first temperature value is less than the first temperature threshold, the defrosting component is controlled to enter the energy storage mode. When the air conditioning system meets the defrosting conditions and the first temperature value is greater than or equal to the first temperature threshold, the heat exchange component is controlled to stop operating, and the first circulation path is controlled to be opened and the first pump body is started to defrost the outdoor heat exchanger.

10. The control method for an air conditioning system according to claim 9, characterized in that, The defrosting assembly further includes a second pump body disposed in the second circulation path and an electric heating element disposed in the heat storage element. During the defrosting process, the method further includes: Obtain the second temperature value of the heat exchange medium within the heating element; If the difference between the second temperature value and the first temperature value is greater than the second temperature threshold, the second pump body is controlled to start. When the difference between the second temperature value and the first temperature value is less than or equal to the second temperature threshold, the electric heating element is controlled to start.

11. The control method for an air conditioning system according to claim 9, characterized in that, The heat exchange assembly further includes: a compressor and a four-way valve, a first valve body, and a second valve body disposed on the refrigerant pipeline. The first valve body is disposed in the first circulation path. The four-way valve includes a first interface, a second interface, a third interface, and a fourth interface. The exhaust port of the compressor is connected to the first interface. One end of the outdoor heat exchanger is connected to the second interface. The return port of the compressor is connected to the third interface. The second valve body is disposed on the refrigerant pipeline between the outdoor heat exchanger and the second interface. The step of controlling the heat exchange component to stop operating specifically includes: The compressor is controlled to stop running, and the first valve body and the second valve body are controlled to close.

12. The control method for an air conditioning system according to claim 9, characterized in that, The heat exchange assembly further includes a compressor, an indoor fan, and an energy storage flow path. One end of the energy storage flow path is connected to the first circulation flow path, and the other end of the energy storage flow path is connected to the exhaust port of the compressor. The defrosting assembly further includes an electric heating element disposed on the heat storage component and a second pump body disposed on the second circulation flow path. The step of controlling the defrosting assembly to enter the energy storage mode specifically includes: Obtain the second temperature value of the heat exchange medium within the heating element; If the difference between the second temperature value and the first temperature value is greater than the second temperature threshold, the second pump body is controlled to start. If the difference between the second temperature value and the first temperature value is less than or equal to the second temperature threshold, the return gas pressure of the compressor is obtained; When the return gas pressure is greater than or equal to the first pressure threshold, the energy storage flow path is controlled to be open; When the return air pressure is less than the first pressure threshold and greater than or equal to the second pressure threshold, the energy storage flow path is controlled to open, and the speed of the indoor fan is controlled to be reduced by a preset level. When the return gas pressure is less than the second pressure threshold, the electric heating element is activated. Wherein, the first temperature threshold is greater than the second temperature threshold, and the first pressure threshold is greater than the second pressure threshold.

13. The control method for the air conditioning system according to any one of claims 9 to 12, characterized in that, The heat exchange component further includes an indoor fan. When the air conditioning system meets the defrosting conditions, and when the first temperature value is less than a first temperature threshold, before the step of controlling the defrosting component to enter energy storage mode, the method further includes: Control the indoor fan speed to reduce to a preset level.

14. The control method for an air conditioning system according to any one of claims 9 to 12, characterized in that, Also includes: When the air conditioning system is operating in cooling mode, the defrosting component is controlled to shut down.

15. A control device for an air conditioning system, characterized in that, For an air conditioning system as described in any one of claims 1 to 8, the device comprises: The acquisition module is used to acquire the first temperature value of the heat exchange medium in the heat storage component when the air conditioning system is operating in heating mode. An energy storage module is used to control the defrosting component to enter an energy storage mode when the first temperature value is less than a first temperature threshold. The defrosting module is used to control the heat exchange component to stop operating and control the first circulation path to open and start the first pump body to defrost the outdoor heat exchanger when the air conditioning system meets the defrosting conditions and the first temperature value is greater than or equal to the first temperature threshold.

16. A control device for an air conditioning system, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute the control method of the air conditioning system as described in any one of claims 9 to 14 when executing the program instructions.

17. An air conditioner, characterized in that, include: The air conditioning system as described in any one of claims 1 to 8; or The control device as described in claim 15 or 16.

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