Air conditioning system

Abstract

The present application relates to an air conditioning system, which includes a first compressor, a second compressor, a selection valve, a heating heat exchanger, a cooling heat exchanger and a heat storage module; the first compressor, the selection valve, the heating heat exchanger, the cooling heat exchanger, the selection valve and the first compressor are connected in sequence to form a first circulation loop; the second compressor, the cooling heat exchanger, the heat storage module and the second compressor are connected in sequence to form a second circulation loop independently set from the first circulation loop; wherein the second compressor can provide a refrigerant for heat exchange with the cooling heat exchanger, and the heat storage module is provided with a heat storage medium that can exchange heat with the refrigerant after heat exchange. Since the second circulation loop works independently of the first circulation loop, there is no need to stop the indoor fan, and the four-way valve does not need to be reversed, so the low-temperature refrigerant will not flow into the indoor side, that is, the heating heat exchanger, and the refrigerant flowing into the indoor side is always the high-temperature refrigerant, so continuous heating can be achieved, which improves the comfort of the air conditioner.

Description

Technical Field

[0001] The present application relates to the technical field of air-conditioning systems, and in particular to an air-conditioning system. Background Art

[0002] Currently, the existing air-conditioning system units generally include a compressor, a four-way valve, a heating heat exchanger, a throttling device, an evaporator and other functional components. The air-conditioning unit realizes the cooling or heating function of the air conditioner through the switching of the four-way valve.

[0003] When the air conditioner is running the heating function, the low-temperature refrigerant needs to absorb heat from the outdoor heating heat exchanger. When the outdoor temperature is relatively low and reaches certain conditions, the outdoor heating heat exchanger will frost. As the thickness of the frost layer gradually increases, it will gradually block the outdoor heating heat exchanger from absorbing heat from the outdoor air, causing a serious impact on the heating effect. At this time, the outdoor heating heat exchanger needs to be defrosted.

[0004] Existing defrosting methods include air conditioning defrosting and heat storage module defrosting. However, during the operation of these two defrosting methods, not only the indoor unit on the indoor side needs to stop supplying heat, but also the four-way valve needs to be reversed. The high-temperature refrigerant exhausted from the compressor flows into the outdoor heating heat exchanger, and the low-temperature refrigerant obtained by heat exchange will still flow into the indoor side, causing the indoor temperature to drop significantly, affecting comfort. Summary of the invention

[0005] Based on this, it is necessary to provide an air-conditioning system that can avoid the drop in indoor temperature during the defrosting process and improve comfort, in response to the problem that the existing defrosting method not only requires the indoor unit to stop supplying heat, but also requires the four-way valve to be reversed, and the high-temperature refrigerant exhausted from the compressor flows into the outdoor heating heat exchanger, and the low-temperature refrigerant obtained by heat exchange will still flow into the indoor side, causing a significant drop in indoor temperature and affecting comfort.

[0006] The present application provides an air conditioning system, including a first compressor, a second compressor, a selection valve, a heating heat exchanger, a cooling heat exchanger and a heat storage module;

[0007] The first compressor, the selection valve, the heating heat exchanger, the cooling heat exchanger, the selection valve and the first compressor are sequentially connected to form a first circulation loop;

[0008] The second compressor, the refrigeration heat exchanger, the heat storage module and the second compressor are sequentially connected to form a second circulation loop independently provided with the first circulation loop;

[0009] The second compressor can provide a refrigerant for heat exchange with the refrigeration heat exchanger, and the heat storage module is provided with a heat storage medium that can exchange heat with the refrigerant after heat exchange.

[0010] In one of the embodiments, the air conditioning system further comprises a heat storage branch arranged in parallel with the first circulation loop, and the heat storage branch comprises the heat storage module;

[0011] The heat storage medium is capable of absorbing and storing the heat of the refrigerant from the first circulation loop.

[0012] In one embodiment, the first circulation loop includes a heating mode and a cooling mode, and a heat storage throttling device is further provided on the heat storage branch, and the heat storage throttling device is controlled to open when the first circulation loop is in the heating mode, so that the heat storage branch is connected to the first circulation loop; and

[0013] The heat storage throttling device is controlled to be closed when the first circulation loop is in a cooling mode, so that the heat storage branch is disconnected from the first circulation loop.

[0014] In one embodiment, one end of the heat storage branch is connected between the selection valve and the heating heat exchanger, and the other end of the heat storage branch is connected between the cooling heat exchanger and the heating heat exchanger.

[0015] In one embodiment, the refrigeration heat exchanger has a first pipeline and a second pipeline that are independently arranged, and both ends of the first pipeline are respectively connected to the selection valve and the heating heat exchanger, and both ends of the second pipeline are respectively connected to the second compressor and the heat storage module.

[0016] In one embodiment, the refrigeration heat exchanger has a first heat exchange element, and the first pipeline and the second pipeline share the first heat exchange element.

[0017] In one embodiment, the refrigeration heat exchanger includes a first arrangement area and a second arrangement area, the first pipeline is arranged in the first arrangement area, and the second pipeline is arranged in the second arrangement area;

[0018] Wherein, the first arrangement area and the second arrangement area are spaced apart from each other or arranged alternately.

[0019] In one embodiment, the second compressor is a variable frequency compressor.

[0020] In one embodiment, the second circulation loop includes a plurality of second circulation loops, and the plurality of second circulation loops are arranged in parallel; or

[0021] The first circulation loops include a plurality of first circulation loops, and the plurality of first circulation loops are arranged in parallel; or

[0022] The first circulation loop and the second circulation loop each include a plurality of first circulation loops, the plurality of second circulation loops are arranged in parallel, and each first circulation loop is arranged correspondingly to a second circulation loop.

[0023] In one embodiment, the heating heat exchanger includes a plurality of heating heat exchangers, and the plurality of heating heat exchangers are arranged in parallel.

[0024] The above-mentioned air conditioning system is arranged in the second circulation loop, so when it is necessary to defrost the refrigeration heat exchanger, the second compressor can be controlled to start, and the second compressor works to discharge high-temperature refrigerant at the exhaust end, and the high-temperature refrigerant then exchanges heat with the refrigeration heat exchanger to defrost the frost layer of the refrigeration heat exchange. The refrigerant after heat release enters the heat storage module again, and absorbs the heat of the heat storage medium in the heat storage module to complete the conversion from liquid to gas, and returns to the suction end of the second compressor to complete the defrost cycle. The air conditioning system of the present application, since the operation of the second circulation loop is independent of the first circulation loop, there is no need to stop the indoor fan, and the four-way valve does not need to be reversed. Therefore, the low-temperature refrigerant will not flow into the indoor side, that is, the heating heat exchanger, and the refrigerant flowing into the indoor side is always the high-temperature refrigerant, so continuous heating can be achieved, which improves the comfort of air conditioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a structural schematic diagram of an air conditioning system in an embodiment of the present application;

[0026] Figure 2 It is a structural schematic diagram of an air conditioning system in another embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0034] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0035] In order to facilitate understanding of the technical solution of the present invention, the existing defrosting method is first described before detailed description.

[0036] There are two existing defrosting methods. One is air conditioning defrosting. When the defrosting conditions are met, the indoor and outdoor fans are stopped, the four-way valve is reversed, and the high-temperature refrigerant exhausted from the compressor flows into the outdoor condenser, thereby releasing heat and melting the frost layer on the surface of the condenser.

[0037] Another defrosting method is to introduce a heat storage module. The heat storage module is generally installed in parallel with the indoor unit. When the air conditioning system is running for heating, a part of the high-temperature refrigerant flows into the heat storage module and releases heat. The released heat is absorbed and stored by the heat storage medium in the heat storage module. When the air conditioner is running in defrosting mode, by controlling the throttling device of the indoor unit, most of the low-temperature refrigerant after the condenser releases heat and defrosts can flow into the heat storage module and absorb the heat stored in the heat storage medium in the heat storage module, forming heat conservation and achieving the purpose of defrosting operation cycle.

[0038] Although the introduction of the heat storage module can reduce the defrosting time, reduce indoor temperature fluctuations and improve comfort to a certain extent, there is no essential difference in the process between the defrosting of the heat storage module and the defrosting of the air conditioner. The indoor fan needs to be stopped and the four-way valve needs to be reversed. The high-temperature refrigerant exhausted from the compressor flows into the outdoor condenser, and the low-temperature refrigerant obtained by heat exchange will still flow into the indoor side, causing the indoor temperature to drop instead of rise, and continuous heating cannot be achieved, thus affecting comfort.

[0039] Therefore, it is necessary to provide an air conditioning system that can prevent the indoor temperature from dropping and improve comfort during the defrosting process.

[0040] Figure 1 The figure shows a schematic diagram of the structure of an air conditioning system in an embodiment of the present application. For the convenience of description, the figure only shows the structure related to the embodiment of the present invention.

[0041] Referring to the drawings, an embodiment of the present application provides an air conditioning system 100, including a first compressor 10, a second compressor 20, a selection valve 30, a heating heat exchanger 40, a cooling heat exchanger 50 and a heat storage module 60. In the embodiment of the present application, the heating heat exchanger 40 belongs to the indoor unit of the air conditioning system 100, and the cooling heat exchanger 50 belongs to the outdoor unit of the air conditioning system 100.

[0042] The first compressor 10, the selector valve 30, the heating heat exchanger 40, the cooling heat exchanger 50, the selector valve 30 and the first compressor 10 are sequentially connected to form a first circulation loop 65. Specifically, the selector valve 30 is a four-way valve.

[0043] Specifically, see Figure 1 In the direction of the solid arrow, the first circulation loop 65 includes a heating mode and a cooling mode. When the first circulation loop 65 is in the heating mode, the refrigerant provided by the exhaust end of the first compressor 10 passes through the selection valve 30, and then passes through the heating heat exchanger 40 and the cooling heat exchanger 50 in sequence and then returns to the selection valve 30 to enter the suction end of the first compressor 10, thereby completing a heating cycle.

[0044] See also Figure 1 In the direction of the middle dotted arrow, when the first circulation loop 65 is in the cooling mode, the refrigerant provided by the exhaust end of the first compressor 10 passes through the selection valve 30, and then passes through the cooling heat exchanger 50 and the heating heat exchanger 40 in sequence and then returns to the selection valve 30 to enter the suction end of the first compressor 10, thereby completing a refrigeration cycle.

[0045] The second compressor 20, the refrigeration heat exchanger 50, the heat storage module 60 and the second compressor 20 are sequentially connected to form a second circulation loop 70 independently provided with the first circulation loop 65. Among them, the second compressor 20 can provide a refrigerant for heat exchange with the refrigeration heat exchanger 50, and the heat storage module 60 is provided with a heat storage medium capable of heat exchange with the refrigerant. It should be noted that the various components of the air conditioning system 100 are connected by pipelines, which will not be described in detail here.

[0046] Specifically, the refrigerant provided by the exhaust end of the second compressor 20 passes through the refrigeration heat exchanger 50 and the heat storage module 60 in sequence and then returns to the suction end of the second compressor 20, thereby completing a defrosting cycle.

[0047] It should also be noted that the second circulation loop 70 is independently provided with the first circulation loop 65, which means that the piping systems and refrigerant flow paths of the second circulation loop 70 and the first circulation loop 65 are not related. The second circulation loop 70 can be opened only when the surface of the refrigeration heat exchanger 50 is frosted to a certain extent.

[0048] In this way, by being set in the second circulation loop 70, when it is necessary to defrost the refrigeration heat exchanger 50, the second compressor 20 can be controlled to start, and the second compressor 20 works to discharge high-temperature refrigerant at the exhaust end, and the high-temperature refrigerant then exchanges heat with the refrigeration heat exchanger 50 to defrost the frost layer of the refrigeration heat exchanger 50. The refrigerant after heat release enters the heat storage module 60 again, and absorbs the heat of the heat storage medium in the heat storage module 60 to complete the conversion from liquid to gas, and returns to the suction end of the second compressor 20 to complete the defrost cycle. In the air-conditioning system 100 of the present application, since the operation of the second circulation loop 70 is independent of the first circulation loop 65, there is no need to stop the indoor fan, and the four-way valve does not need to be reversed. Therefore, the low-temperature refrigerant will not flow into the indoor side, that is, the heating heat exchanger 40, and the refrigerant flowing into the indoor side is always the high-temperature refrigerant, so continuous heating can be achieved, which improves the comfort of air conditioning.

[0049] Specifically in the embodiment of the present application, the refrigeration heat exchanger 50 has a first pipeline and a second pipeline that are independently arranged, and the two ends of the first pipeline are respectively connected to the selection valve 30 and the heating heat exchanger 40, and the two ends of the second pipeline are respectively connected to the second compressor 20 and the heat storage module 30. In other words, the first pipeline is connected to the first circulation loop 65, and the second pipeline is connected to the second circulation loop 70. By setting two independent sets of pipelines, it can be ensured that the first circulation loop 65 and the second circulation loop 70 are independent of each other and do not affect each other.

[0050] Furthermore, the refrigeration heat exchanger 50 has a first heat exchanger, and the first pipeline and the second pipeline share the first heat exchanger. Specifically, the first heat exchanger is a fin. In other embodiments, it can also be other components with heat exchange function, which is not limited here. When the refrigeration heat exchanger 50 is frosted, the frost will condense on the surface of the first heat exchanger. When defrosting is required, the heat of the high-temperature defrosting refrigerant in the second circulation loop 70 is transferred to the first heat exchanger of the refrigeration heat exchanger 50 through the second pipeline. Because the first heat exchanger is a common integrated structure of the two circuits, the heat will be transferred from the high-temperature area of ​​the first heat exchanger to the low-temperature area, thereby ensuring that the frost layer in the low-temperature area of ​​the first heat exchanger melts after being heated, making defrosting more comprehensive and reliable.

[0051] In some embodiments, the refrigeration heat exchanger 50 includes a first arrangement area and a second arrangement area, the first pipeline is arranged in the first arrangement area, and the second pipeline is arranged in the second arrangement area, wherein the first arrangement area and the second arrangement area are arranged at intervals from each other. In this way, the first pipeline and the second pipeline can be arranged in a concentrated manner in different areas, and the arrangement is indirect. In other embodiments, the first arrangement area and the second arrangement area are arranged in an interlaced manner. In this way, the first heat exchange element can be heated evenly at various locations, which is also conducive to defrosting.

[0052] In some embodiments, the second compressor 20 is a variable frequency compressor. In this way, the actual output power of the second compressor 20 can be controlled, and the amount of defrosting heat of the refrigeration heat exchanger 50 can be controlled. In addition, the operation output power of the second compressor 20 can be adjusted according to the frosting degree of the refrigeration heat exchanger 50 in coordination with the whole machine operation control logic. Specifically, when the refrigeration heat exchanger 50 has no tendency to frost or the degree of frost is very slight, the operation output power of the second compressor 20 is close to zero. As the severity of frost on the refrigeration heat exchanger 50 increases, the operation output power of the second compressor 20 can be gradually increased to reduce the severity of frost on the refrigeration heat exchanger 50. In this way, under reasonable control logic and parameter control, the first circulation loop 65 can be operated in the heating mode without being shut down due to defrosting, that is, to achieve uninterrupted continuous heating of the indoor unit, greatly improving the comfort of air conditioning.

[0053] In some embodiments, the air conditioning system 100 further includes a heat storage branch 75 arranged in parallel with the first circulation loop 65, and the heat storage branch 75 includes a heat storage module 60, wherein the heat storage medium can absorb and store the heat of the refrigerant from the first circulation loop 65. Specifically, when the first circulation loop 65 is in the heating mode, a portion of the high-temperature refrigerant will be separated to the heat storage branch 75, and the high-temperature refrigerant will release heat in the heat storage module 60 to be absorbed and stored by the heat storage medium of the heat storage module 60. The refrigerant after heat release will then be merged into the first circulation loop 65 to complete the heat storage function. In this way, the heat storage branch 75 can be set to absorb the heat of the refrigerant in the heating mode of the first circulation loop 65, and no other external equipment is required to store heat for the heat storage module 65. Therefore, while not interfering with the heating cycle, the structure of the air conditioning system 100 is also simplified. It should be pointed out that in other embodiments, other external equipment can also be used to store heat for the heat storage module 65.

[0054] Specifically, one end of the heat storage branch 75 is disposed between the selection valve 30 and the heating heat exchanger 40, and the other end is disposed between the heating heat exchanger 40 and the cooling heat exchanger 50. In this way, it is ensured that sufficient heat is absorbed by the heat storage medium. In addition, compared with the heat storage branch 75 being connected in parallel to the end of the heating heat exchanger 40 away from the selection valve 30 and the cooling heat exchanger 50, this method can simplify the piping arrangement.

[0055] Specifically, the thermal storage module 60 has a third pipeline and a fourth pipeline that are independent of each other, the two ends of the third pipeline are respectively connected to the refrigeration heat exchanger 50 and the second compressor 20, and the two ends of the fourth pipeline are respectively connected to the selection valve 30 and the refrigeration heat exchanger 50. Further, the thermal storage module 60 has a second heat exchange element storing a heat storage medium, and the third pipeline and the fourth pipeline share the second heat exchange element.

[0056] Furthermore, a heat storage throttling device 80 is provided on the heat storage branch 75, and the heat storage throttling device 80 is controlled to be opened when the first circulation loop 65 is in the heating mode, so that the heat storage branch 75 is connected to the first circulation loop 65, and the heat storage throttling device 80 is controlled to be closed when the first circulation loop 65 is in the cooling mode, so that the heat storage branch 75 is disconnected from the first circulation loop 65. In this way, when the first circulation loop 65 is in the cooling mode, the heat storage branch 75 does not participate in the circulation of the first circulation loop 65, so as to prevent the heat storage medium from being affected by the refrigerant and cooling down.

[0057] It should also be pointed out that the form and type of the heat storage medium are not limited, and any material that can achieve heat exchange, store heat, and complete the transfer of heat in the first circulation loop 65 and the second circulation loop 70 is within the required scope of this application.

[0058] like Figure 2 As shown, in some embodiments, in order to meet different installation requirements, the heat storage branch 75 can be set as part of the indoor unit A, or the heat storage branch 75 can be set as part of the outdoor unit B, which is not limited here. Specifically, when the heat storage branch 75 is part of the indoor unit A, the air conditioning system 100 also includes a first stop valve 82 and a second stop valve 85 provided on the first circulation loop 65, and the first stop valve 82 and the second stop valve 85 are respectively provided at both ends of the heat storage branch 75 to connect with the outdoor unit B. Please refer to Figure 1 When the heat storage branch 75 is part of the outdoor unit B, the air-conditioning system 100 also includes a third stop valve 90 and a fourth stop valve 95 arranged on the first circulation loop 65, and the third stop valve 90 and the fourth stop valve 95 are respectively arranged at both ends of the heat storage branch 75 to be connected to the indoor unit A.

[0059] In some embodiments, the second circulation loop 70 includes multiple second circulation loops 70, and the multiple second circulation loops 70 are arranged in parallel.

[0060] In some embodiments, the first circulation loop 65 includes multiple loops, and the multiple first circulation loops 65 are arranged in parallel. The multiple first circulation loops 65 can share the same selection valve 30, heating heat exchanger 40 and cooling heat exchanger 50, and use multiple first compressors 10 accordingly. In other embodiments, the second circulation loop 70 and the first circulation loop 65 each include multiple loops, and each first circulation loop 65 is arranged corresponding to a second circulation loop 70. That is, each second circulation loop 70 can defrost the cooling heat exchanger 50 on the corresponding first circulation loop 65.

[0061] In some embodiments, the heat storage module 60 includes a plurality of heat storage modules 60, which are arranged in series in the second circulation loop 70 and in parallel in the first circulation loop 65. More specifically, the heat storage branch 75 includes a plurality of heat storage branches 75, which are arranged in parallel in the first circulation loop 65, so that sufficient heat storage can be achieved.

[0062] In some embodiments, the heating heat exchanger 40 includes multiple heating heat exchangers 40, and the multiple heating heat exchangers 40 are arranged in parallel. In this way, the air conditioning system 100 of the present application can be a one-to-many multi-connected air conditioning system. In other embodiments, the heating heat exchanger 40 can also include only one, so that the air conditioning system 100 becomes a one-to-one single-unit air conditioning system.

[0063] In some embodiments, in order to enhance the air flow of the heating heat exchanger 40 and the cooling heat exchanger 50 , a first fan 96 and a second fan 98 are respectively disposed near the heating heat exchanger 40 and the cooling heat exchanger 50 .

[0064] The air conditioning system 100 provided in the embodiment of the present application has the following beneficial effects:

[0065] By being arranged in the second circulation loop 70, when it is necessary to defrost the refrigeration heat exchanger 50, the second compressor 20 can be controlled to start, and the second compressor 20 works to discharge high-temperature refrigerant at the exhaust end, and the high-temperature refrigerant then exchanges heat with the refrigeration heat exchanger 50 to defrost the frost layer of the refrigeration heat exchanger 50. The refrigerant after releasing heat enters the heat storage module 60 again, and absorbs the heat of the heat storage medium in the heat storage module 60 to complete the conversion from liquid to gas, and returns to the suction end of the second compressor 20 to complete the defrost cycle. In the air-conditioning system 100 of the present application, since the operation of the second circulation loop 70 is independent of the first circulation loop 65, there is no need to stop the indoor fan, and the four-way valve does not need to be reversed. Therefore, the low-temperature refrigerant will not flow into the indoor side, that is, the heating heat exchanger 40, and the refrigerant flowing into the indoor side is always the high-temperature refrigerant, so continuous heating can be achieved, and the air-conditioning comfort is improved.

[0066] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. An air conditioning system (100), characterized in that: It comprises a first compressor (10), a second compressor (20), a selection valve (30), a heating heat exchanger (40), a cooling heat exchanger (50) and a heat storage module (60); The first compressor (10), the selection valve (30), the heating heat exchanger (40), the cooling heat exchanger (50), the selection valve (30) and the first compressor (10) are sequentially connected to form a first circulation loop (65); The second compressor (20), the refrigeration heat exchanger (50), the heat storage module (60), and the second compressor (20) are sequentially connected to form a second circulation loop (70) that is independently arranged from the first circulation loop (65); The second compressor (20) is capable of providing a refrigerant for heat exchange with the refrigeration heat exchanger (50), and the heat storage module (60) is provided with a heat storage medium capable of heat exchange with the refrigerant after heat exchange.

2. The air conditioning system (100) according to claim 1, characterized in that: The air conditioning system further comprises a heat storage branch (75) arranged in parallel with the first circulation loop (65), and the heat storage branch (75) comprises the heat storage module (60); The heat storage medium is capable of absorbing and storing the heat of the refrigerant from the first circulation loop (65).

3. The air conditioning system (100) according to claim 2, characterized in that: The first circulation loop (65) includes a heating mode and a cooling mode, and the heat storage branch (75) is also provided with a heat storage throttling device (80), and the heat storage throttling device (80) is controlled to open when the first circulation loop (65) is in the heating mode, so that the heat storage branch (75) and the first circulation loop (65) are connected; and The heat storage throttling device (80) is controlled to be closed when the first circulation loop (65) is in cooling mode, so that the heat storage branch (75) is disconnected from the first circulation loop (65).

4. The air conditioning system (100) according to claim 2, characterized in that: One end of the heat storage branch (75) is connected between the selection valve (30) and the heating heat exchanger (40), and the other end of the heat storage branch (75) is connected between the cooling heat exchanger (50) and the heating heat exchanger (40).

5. The air conditioning system (100) according to claim 1, characterized in that: The refrigeration heat exchanger (50) has a first pipeline and a second pipeline that are independently arranged, wherein two ends of the first pipeline are respectively connected to the selection valve (30) and the heating heat exchanger (40), and two ends of the second pipeline are respectively connected to the second compressor (20) and the heat storage module (60).

6. The air conditioning system (100) according to claim 5, characterized in that: The refrigeration heat exchanger (50) has a first heat exchange component, and the first pipeline and the second pipeline share the first heat exchange component.

7. The air conditioning system (100) according to claim 5, characterized in that: The refrigeration heat exchanger (50) comprises a first arrangement area and a second arrangement area, the first pipeline is arranged in the first arrangement area, and the second pipeline is arranged in the second arrangement area; Wherein, the first arrangement area and the second arrangement area are spaced apart from each other or arranged alternately.

8. The air conditioning system (100) according to claim 1, characterized in that: The second compressor (20) is a variable frequency compressor.

9. The air conditioning system (100) according to claim 1, characterized in that: The second circulation loop (70) comprises a plurality of second circulation loops (70), and the plurality of second circulation loops (70) are arranged in parallel; or The first circulation loop (65) includes a plurality of first circulation loops (65), and the plurality of first circulation loops (65) are arranged in parallel; or The first circulation loop (65) and the second circulation loop (70) each include a plurality of first circulation loops (65) arranged in parallel, and a plurality of second circulation loops (70) arranged in parallel, and each first circulation loop (65) is arranged correspondingly to a second circulation loop (70).

10. The air conditioning system (100) according to claim 1, characterized in that: The heating heat exchanger (40) comprises a plurality of heating heat exchangers (40), and the plurality of heating heat exchangers (40) are arranged in parallel.

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