Heat exchange system and heating and ventilation equipment

Abstract

The utility model relates to the technical field of heating and ventilation equipment, in particular to a heat exchange system and heating and ventilation equipment. The heat exchange system comprises a refrigerant circulating pipeline and a refrigerant adjusting pipeline, the refrigerant adjusting pipeline communicates with the refrigerant circulating pipeline in a parallel connection mode, and a liquid storage assembly is arranged on the refrigerant adjusting pipeline. The refrigerant adjusting pipeline is provided with a first valve, the first valve is a normally open solenoid valve, and / or the heat exchange system further comprises an unloading pipeline, the liquid storage assembly is communicated with the unloading pipeline, and the unloading pipeline is provided with an unloading valve for controlling the unloading pipeline so as to release the pressure in the liquid storage assembly. The refrigerant in the liquid storage assembly of the heat exchange system can flow into the refrigerant circulation pipeline through the normally-open electromagnetic valve, the pressure in the liquid storage assembly is reduced, and the probability of breakage of the liquid storage assembly is reduced; or the refrigerant in the liquid storage assembly is opened through the unloading valve of the unloading pipeline, the pressure in the liquid storage assembly is released, and the breakage probability of the liquid storage assembly is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of HVAC equipment, in particular to a heat exchange system and HVAC equipment. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] The heat exchange system is a HVAC equipment host system that can realize the functions of independent cooling of water, independent hot water production, and simultaneous heating and cooling.

[0004] When the heat exchange system is in different working modes, the demand for refrigerant is inconsistent. Generally, when the heat exchange system is in cooling water mode, a large amount of refrigerant is required, and when the heat exchange system is in hot water making mode, a small amount of refrigerant is required. Therefore, the heat exchange system uses a liquid storage component as a refrigerant regulating container.

[0005] When the liquid storage component is used in parallel with the refrigerant circulation pipeline, the refrigerant will fill the liquid storage component when the heat exchange system is in hot water making mode. If the operating condition of the heat exchange system changes or the ambient temperature rises after the heat exchange system is shut down, the refrigerant in the liquid storage component will expand in volume due to changes in thermal expansion and contraction, making the liquid storage component prone to rupture. Utility Model Content

[0006] The purpose of the utility model is to at least solve the problem that when the working condition of the heat exchange system changes or the ambient temperature rises after the heat exchange system is shut down, the refrigerant in the liquid storage component will expand in volume due to the change of thermal expansion and contraction, and the liquid storage component is prone to rupture. This purpose is achieved through the following technical solutions:

[0007] The first aspect of the utility model provides a heat exchange system, the heat exchange system comprising:

[0008] Refrigerant circulation pipeline;

[0009] A refrigerant regulating pipeline, the refrigerant regulating pipeline is connected in parallel with the refrigerant circulation pipeline, and a liquid storage component is provided on the refrigerant regulating pipeline;

[0010] A first valve is provided on the refrigerant regulating pipeline, and the first valve is a normally open solenoid valve, and / or the heat exchange system also includes an unloading pipeline, the liquid storage component is connected to the unloading pipeline, and the unloading pipeline is provided with an unloading valve for controlling the unloading pipeline to release the pressure in the liquid storage component.

[0011] According to the heat exchange system of the utility model, the refrigerant regulating pipeline and the refrigerant circulation pipeline of the heat exchange system are connected in parallel, and a liquid storage component is provided on the refrigerant regulating pipeline, and a first valve is provided on the refrigerant regulating pipeline, and the first valve is a normally open solenoid valve. Then, when the operating condition of the heat exchange system changes or the ambient temperature rises after the heat exchange system is shut down, the refrigerant in the liquid storage component expands in volume, and the refrigerant in the liquid storage component can flow into the refrigerant regulating pipeline through the normally open solenoid valve, thereby reducing the pressure in the liquid storage component and reducing the probability of rupture of the liquid storage component; or the refrigerant in the liquid storage component is opened by the unloading valve of the unloading pipeline to release the pressure in the liquid storage component and reduce the probability of rupture of the liquid storage component.

[0012] In addition, the heat exchange system of the utility model may also have the following additional technical features:

[0013] In some embodiments of the present invention, the unloading valve is configured to open when the pressure in the liquid storage assembly is greater than the operating pressure of the unloading valve, so that the unloading pipeline is connected.

[0014] In some embodiments of the present invention, the refrigerant regulating pipeline includes a first pipeline, both ends of which are respectively connected to the refrigerant circulation pipeline and one end of the liquid storage component, wherein the first valve is provided on the first pipeline.

[0015] In some embodiments of the present invention, the refrigerant circulation pipeline includes a compressor, a four-way valve and a heat exchange component which are sequentially connected through pipelines, and the first pipeline is connected to the heat exchange component.

[0016] In some embodiments of the utility model, the refrigerant circulation pipeline further includes a first electronic expansion valve;

[0017] The heat exchange assembly includes a first heat exchanger and a second heat exchanger, wherein the four-way valve, the second heat exchanger, the first electronic expansion valve and the first heat exchanger are sequentially connected along the exhaust direction of the compressor, and the compressor, the four-way valve, the second heat exchanger, the first electronic expansion valve and the first heat exchanger form a heating flow path;

[0018] The first pipeline is in communication with an outlet end of the first electronic expansion valve.

[0019] In some embodiments of the present invention, the refrigerant regulating pipeline also includes a second pipeline, both ends of which are respectively connected to the other end of the liquid storage assembly and the refrigerant circulation pipeline, and a second valve is provided on the second pipeline.

[0020] In some embodiments of the present invention, the second valve is a normally open solenoid valve.

[0021] In some embodiments of the present invention, two ends of the unloading pipeline are respectively connected to the liquid storage component and the refrigerant circulation pipeline.

[0022] In some embodiments of the present invention, the inlet end of the unloading pipeline is communicated with the liquid storage assembly, and the outlet end of the unloading pipeline is communicated with the inlet end or the outlet end of the first electronic expansion valve.

[0023] A second aspect of the utility model provides a HVAC device, which includes the heat exchange system described in the above embodiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0025] Figure 1 The structure diagram of the heat exchange system according to the embodiment of the utility model is schematically shown;

[0026] Figure 2 Another structural schematic diagram of a heat exchange system according to an embodiment of the utility model is schematically shown;

[0027] Figure 3 Another structural schematic diagram of a heat exchange system according to an embodiment of the utility model is schematically shown;

[0028] The reference numerals are as follows:

[0029] 100. Heat exchange system;

[0030] 10. Refrigerant circulation pipeline; 11. Compressor; 12. Four-way valve; 121. First port; 122. Second port; 123. Third port; 124. Fourth port; 13. First heat exchanger; 14. First electronic expansion valve; 15. Second heat exchanger; 151. First inlet; 152. First outlet;

[0031] 101, first refrigerant pipe; 102, second refrigerant pipe; 103, third refrigerant pipe; 104, fourth refrigerant pipe; 105, fifth refrigerant pipe; 106, sixth refrigerant pipe;

[0032] 20. Refrigerant regulating pipeline; 21. Liquid storage assembly; 22. First pipeline; 23. Second pipeline; 24. First valve; 25. Second valve;

[0033] 30. Unloading pipeline; 31. Unloading valve;

[0034] 40. Container. DETAILED DESCRIPTION

[0035] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0036] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments, and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0037] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0038] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0039] like Figures 1 to 3 As shown, in the first aspect of the embodiment of the utility model, a heat exchange system 100 is proposed. Figure 1 The structure diagram of the heat exchange system 100 according to the embodiment of the utility model is schematically shown. Figure 2 Another structural diagram of a heat exchange system 100 according to an embodiment of the present utility model is schematically shown. Figure 3 Another structural schematic diagram of a heat exchange system 100 according to an embodiment of the utility model is schematically shown. The heat exchange system 100 includes a refrigerant circulation pipeline 10 and a refrigerant regulating pipeline 20, the refrigerant regulating pipeline 20 and the refrigerant circulation pipeline 10 are connected in parallel, and a liquid storage component 21 is provided on the refrigerant regulating pipeline 20; a first valve 24 is provided on the refrigerant regulating pipeline 20, and the first valve 24 is a normally open solenoid valve.

[0040] It should be noted that the heat exchange system 100 is a HVAC equipment host system that can realize the functions of independent cooling water, independent hot water production and simultaneous heating and cooling, and has three working modes, namely, independent hot water production mode, independent cooling water mode and simultaneous heating and cooling mode. Among them, when the heat exchange system 100 is in different working modes, the demand for the amount of refrigerant is inconsistent. Specifically, when the heat exchange system 100 is in a single cooling water mode, the heat exchange system 100 requires the largest amount of refrigerant, and all the refrigerants need to be involved in the circulation of the refrigerant circulation pipeline 10. When the heat exchange system 100 is in a single hot water mode, the amount of refrigerant required by the refrigerant circulation pipeline 10 is moderate, and the amount of refrigerant in the refrigerant circulation pipeline 10 needs to be dynamically adjusted; when the heat exchange system 100 is in a simultaneous cooling and heating mode, the amount of refrigerant required by the heat exchange system 100 is the least. At this time, it is necessary to reduce the amount of refrigerant in the refrigerant circulation pipeline 10, so as to achieve fine adjustment of the amount of refrigerant. In order to achieve fine adjustment of the refrigerant, the heat exchange system 100 in the utility model is provided with a refrigerant regulating pipeline 20, wherein the refrigerant regulating pipeline 20 is arranged in parallel with the refrigerant circulation pipeline 10, and a liquid storage component 21 is arranged on the refrigerant regulating pipeline 20.

[0041] In addition, the normally open solenoid valve here refers to a solenoid valve that is closed when the coil is energized and opened when the coil is de-energized, which is the opposite type of normally closed solenoid valve. The liquid storage component 21 mentioned here can be a liquid storage tank or other container 40 for storing refrigerant, which can store refrigerant.

[0042] According to the heat exchange system 100 of the utility model, the refrigerant regulating pipeline 20 and the refrigerant circulation pipeline 10 of the heat exchange system 100 are connected in parallel, and a liquid storage component 21 is provided on the refrigerant regulating pipeline 20, and a first valve 24 is provided on the refrigerant regulating pipeline 20, and the first valve 24 is a normally open solenoid valve. Then, when the operating condition of the heat exchange system 100 changes or the ambient temperature rises after the heat exchange system 100 is shut down, the refrigerant in the liquid storage component 21 expands in volume, and the refrigerant in the liquid storage component 21 can flow into the refrigerant regulating pipeline 20 through the normally open solenoid valve, thereby reducing the pressure in the liquid storage component 21 and reducing the probability of rupture of the liquid storage component 21.

[0043] In order to realize the regulating function of the liquid storage component 21 on the refrigerant, optionally, the refrigerant regulating pipeline 20 also includes a second pipeline 23, and the two ends of the second pipeline 23 are respectively connected to the other end of the liquid storage component 21 and the refrigerant circulation pipeline 10, and a second valve 25 is provided on the second pipeline 23, and the second valve 25 is a solenoid valve structure.

[0044] It should be noted that the liquid storage component 21 and the refrigerant circulation pipeline 10 are in a selectively connected state, which is used to adjust the amount of refrigerant in the refrigerant circulation pipeline 10. Specifically, the liquid storage component 21 and the refrigerant circulation pipeline 10 can be in a disconnected state or a connected state, and are selected for use according to the working mode of the heat exchange system 100, so as to achieve the adjustment of the amount of refrigerant in the refrigerant circulation pipeline 10.

[0045] The first valve 24 here is used to control the connection or disconnection of the first pipeline 22, wherein, when the first valve 24 is in an open state, the first pipeline 22 is in a connected state, and one end of the liquid storage component 21 can be connected with the refrigerant circulation pipeline 10.

[0046] The first valve 24 here may be a solenoid valve or other valve capable of realizing automatic control.

[0047] Optionally, the second valve 25 is a normally open solenoid valve, that is, at least one of the first valve 24 and the second valve 25 is a normally open solenoid valve, the first valve 24 can be a normally open solenoid valve, the second valve 25 can be a normally open solenoid valve, or both the first valve 24 and the second valve 25 can be normally open solenoid valves. In this way, when the heat exchange system 100 is in a shutdown state or a state after a change in operating conditions, the liquid storage component 21 and the refrigerant circulation pipeline 10 can be in a connected state to release the pressure.

[0048] It should be noted that when the heat exchange system 100 is in normal operation, the first valve 24 is in a normally closed state and the second valve 25 is in a conditionally open state, so that the amount of refrigerant in the refrigerant circulation pipeline 10 can be regulated through the liquid storage component 21.

[0049] Specifically, the second valve 25 can determine whether to open instantaneously according to the high pressure condition of the heat exchange system 100, and dynamically adjust the amount of refrigerant required by the refrigerant circulation pipe. For example, for R410a refrigerant, when the high pressure in the heat exchange system 100 is greater than the first preset value, the second valve 25 is opened for a certain period of time and then closed.

[0050] Specifically, when the high pressure in the heat exchange system 100 is greater than 39 MPa, the second valve 25 is opened for 3 or 5 seconds to adjust the amount of refrigerant circulating in the heat exchange system 100, reduce the high pressure in the heat exchange system 100, and thus improve the unit energy efficiency of the heat exchange system 100.

[0051] Considering that the first valve 24 and the second valve 25 may fail, the heat exchange system 100 of the present invention, in addition to adopting the above-mentioned structure of setting at least one of the first valve 24 and the second valve 25 as a normally open solenoid valve, also provides a Figure 1The heat exchange system 100 is shown.

[0052] As an alternative embodiment, Figure 1 and Figure 2 As shown, the heat exchange system 100 further includes an unloading pipeline 30, the liquid storage assembly 21 is connected to the unloading pipeline 30, and an unloading valve 31 for controlling the unloading pipeline 30 is provided on the unloading pipeline 30 to release the pressure in the liquid storage assembly 21. In other words, the refrigerant in the liquid storage assembly 21 is opened by the unloading valve 31 of the unloading pipeline 30, so as to release the pressure in the liquid storage assembly 21 and reduce the probability of the liquid storage assembly 21 being broken.

[0053] Of course, at least one of the first valve 24 and the second valve 25 can also be set as a normally open solenoid valve structure and set in the heat exchange system 100 at the same time. That is to say, at least one of the first valve 24 and the second valve 25 is set as a normally open solenoid valve structure and the unloading pipeline 30 is also set in the heat exchange system 100, so that the refrigerant in the liquid storage component 21 can flow out through multiple channels.

[0054] It should be noted that the unloading valve 31 here is a common mechanical component, and a suitable operating pressure or opening pressure can be selected as needed, wherein the power pressure or opening pressure needs to be greater than the maximum pressure during the operation of the heat exchange system 100 and less than the pressure resistance of the liquid storage component 21, so that the heat exchange system 100 will not trigger the opening of the unloading valve 31 during normal operation, and will not affect the normal operation of the heat exchange system 100. After the four-pipe shutdown, when the pressure inside the liquid storage component 21 increases and the pressure is greater than the operating pressure or opening pressure of the unloading valve 31, the unloading valve 31 can be opened to discharge the refrigerant in the liquid storage component 21 in a timely and effective manner, thereby reducing the pressure in the liquid storage component 21 and reducing the probability of rupture of the liquid storage component 21.

[0055] That is to say, the unloading valve 31 can be configured so that when the pressure in the liquid storage assembly 21 is greater than the operating pressure of the unloading valve 31, the unloading valve 31 opens to connect the unloading pipeline 30, thereby enabling the refrigerant in the liquid storage assembly 21 to be discharged in time.

[0056] It should be noted that if Figure 1 and Figure 3 As shown, the refrigerant in the liquid storage assembly 21 can be discharged into the container 40 for collection, or discharged into the refrigerant circulation pipeline 10 to achieve the reuse of the refrigerant. Figure 1 In the process, the refrigerant in the liquid storage assembly 21 is discharged into the refrigerant circulation pipeline 10. Figure 3 In the embodiment, the refrigerant in the liquid storage assembly 21 is discharged into the container 40. Of course, when the refrigerant does not pollute the air, the refrigerant in the liquid storage assembly 21 can also be directly discharged into the air.

[0057] Optionally, the refrigerant regulating pipeline 20 includes a first pipeline 22, which can be a circular tube or a rectangular tube, and has two ends, which are respectively connected to the refrigerant circulation pipeline 10 and one end of the liquid storage group, wherein a first valve 24 is provided on the first pipeline 22, and the first valve 24 here is used to control the connection or disconnection of the first pipeline 22, wherein when the first valve 24 is in an open state, the first pipeline 22 is in a connected state, and one end of the liquid storage assembly 21 can be connected to the refrigerant circulation pipeline 10. The first valve 24 here can be a solenoid valve, or other valves that can achieve automatic control.

[0058] Optionally, continue to refer to Figure 1 As shown, the refrigerant circulation pipeline 10 includes a compressor 11, a four-way valve 12 and a heat exchange component which are sequentially connected through pipelines, wherein the first pipeline 22 is connected to the heat exchange component.

[0059] The number of heat exchange components here can be one, two or more, and the corresponding heat exchange components can be selected to work according to needs.

[0060] Specifically, the heat exchange component includes a first heat exchanger 13, a cold water heat exchanger (not shown) and a second heat exchanger 15, wherein the first pipeline 22 is connected to the second heat exchanger 15, and the heat exchange system 100 selects different heat exchangers to enter the circulation process according to different working modes.

[0061] Optionally, continue to refer to Figure 1 and Figure 2 As shown, the refrigerant circulation pipeline 10 also includes a first electronic expansion valve 14, and the heat exchange component includes a first heat exchanger 13 and a second heat exchanger 15. The four-way valve 12, the second heat exchanger 15, the first electronic expansion valve 14 and the first heat exchanger 13 are connected in sequence along the exhaust direction of the compressor 11. The compressor 11, the four-way valve 12, the second heat exchanger 15, the first electronic expansion valve 14 and the first heat exchanger 13 form a heating flow path; the first pipeline 22 is connected to the outlet end of the first electronic expansion valve 14, or the first pipeline 22 is connected to the inlet end of the first heat exchanger 13.

[0062] Specifically, the heat exchange system 100 includes multiple pipelines, wherein the compressor 11 and the four-way valve 12 are connected through the first refrigerant pipe 101, the four-way valve 12 is connected to the first heat exchanger 13 through the second refrigerant pipe 102, the first heat exchanger 13 is connected to the first electronic expansion valve 14 through the third refrigerant pipe 103, the first electronic expansion valve 14 is connected to the second heat exchanger 15 through the fourth refrigerant pipe 104, and the second heat exchanger 15 is connected to the four-way valve 12.

[0063] It should be noted that the first heat exchanger 13 here can be an air-cooled heat exchanger, such as a finned heat exchanger, which has a good heat exchange effect, and the second heat exchanger 15 is a hot water heat exchanger. The four-way valve 12 here has four interfaces, namely a first port 121, a second port 122, a third port 123 and a fourth port 124. The air outlet of the compressor 11 is connected to the first port 121 of the four-way valve 12, the second port 122 of the four-way valve 12 is connected to the outlet of the first heat exchanger 13, the third port 123 of the four-way valve 12 is connected to the air inlet of the compressor 11, and the fourth port 124 of the four-way valve 12 is connected to the inlet of the second heat exchanger 15. The outlet of the second heat exchanger 15 is connected to the inlet of the first electronic expansion valve 14, the outlet of the first electronic expansion valve 14 is connected to the inlet of the first heat exchanger 13, and the outlet of the first heat exchanger 13 is connected to the second port 122 of the four-way valve 12, so that the circulation of the refrigerant can be realized.

[0064] Among them, Figure 1 , Figure 2 and Figure 3 In the diagram, the refrigerant flows in the direction indicated by the arrow.

[0065] Alternatively, if Figures 1 to 3 As shown, the second heat exchanger 15 is provided with a first inlet 151 and a first outlet 152, wherein the first inlet 151 is connected to a water source, and the first outlet 152 is connected to an output end of a user, so as to provide hot water for the user.

[0066] Optionally, both ends of the unloading pipeline 30 are connected to the liquid storage assembly 21 and the refrigerant circulation pipeline 10, respectively. Figure 1 In the embodiment, the inlet end of the unloading pipeline 30 is connected to the liquid storage assembly 21, and the outlet end of the unloading pipeline 30 is connected to the third refrigerant pipe 103. Figure 2 In the figure, the inlet end of the unloading pipeline 30 is connected to the liquid storage component 21, and the outlet end of the unloading pipeline 30 is directly connected to the fourth refrigerant pipe 104. Of course, the outlet end of the unloading pipeline 30 here can also be directly connected to the fifth refrigerant pipe 105 or the sixth refrigerant pipe 106, both of which can enable the refrigerant in the liquid storage component 21 to enter the refrigerant circulation pipeline 10 through the unloading pipeline 30, realize the recycling of the refrigerant, and reduce the operating cost of the heat exchange system 100.

[0067] Optionally, the inlet end of the unloading pipeline 30 can also be connected to the liquid storage component 21, and the outlet end of the unloading pipeline 30 can be connected to the inlet end or the outlet end of the first electronic expansion valve 14, which can also make the refrigerant in the liquid storage component 21 enter the refrigerant circulation pipeline 10 through the unloading pipeline 30, thereby achieving the effect of recycling the refrigerant, thereby reducing the operating cost of the heat exchange system 100.

[0068] The second aspect of the present invention provides a HVAC device, which includes the heat exchange system 100 as described in the above embodiment.

[0069] The HVAC equipment here can be heat pump type HVAC equipment or other types of HVAC equipment.

[0070] For the structures of other parts of this application, please refer to the prior art and will not be described in detail in this application.

[0071] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A heat exchange system, characterized in that: The heat exchange system comprises: Refrigerant circulation pipeline; A refrigerant regulating pipeline, the refrigerant regulating pipeline is connected in parallel with the refrigerant circulation pipeline, and a liquid storage component is provided on the refrigerant regulating pipeline; A first valve is provided on the refrigerant regulating pipeline, and the first valve is a normally open solenoid valve, and / or the heat exchange system also includes an unloading pipeline, the liquid storage component is connected to the unloading pipeline, and the unloading pipeline is provided with an unloading valve for controlling the unloading pipeline to release the pressure in the liquid storage component.

2. The heat exchange system according to claim 1, characterized in that: The unloading valve is configured to be opened when the pressure in the liquid storage assembly is greater than the operating pressure of the unloading valve, so that the unloading pipeline is connected.

3. The heat exchange system according to claim 1 or 2, characterized in that: The refrigerant regulating pipeline includes a first pipeline, two ends of which are respectively connected to the refrigerant circulation pipeline and one end of the liquid storage component, wherein the first valve is arranged on the first pipeline.

4. The heat exchange system according to claim 3, characterized in that: The refrigerant circulation pipeline includes a compressor, a four-way valve and a heat exchange component which are sequentially connected through pipelines, and the first pipeline is connected to the heat exchange component.

5. The heat exchange system according to claim 4, characterized in that: The refrigerant circulation pipeline also includes a first electronic expansion valve; The heat exchange assembly includes a first heat exchanger and a second heat exchanger, wherein the four-way valve, the second heat exchanger, the first electronic expansion valve and the first heat exchanger are sequentially connected along the exhaust direction of the compressor, and the compressor, the four-way valve, the second heat exchanger, the first electronic expansion valve and the first heat exchanger form a heating flow path; The first pipeline is in communication with an outlet end of the first electronic expansion valve.

6. The heat exchange system according to claim 3, characterized in that: The refrigerant regulating pipeline also includes a second pipeline, the two ends of which are respectively connected to the other end of the liquid storage component and the refrigerant circulation pipeline, and a second valve is arranged on the second pipeline.

7. The heat exchange system according to claim 6, characterized in that: The second valve is a normally open solenoid valve.

8. The heat exchange system according to claim 5, characterized in that: Two ends of the unloading pipeline are respectively connected to the liquid storage component and the refrigerant circulation pipeline.

9. The heat exchange system according to claim 8, characterized in that: The inlet end of the unloading pipeline is communicated with the liquid storage assembly, and the outlet end of the unloading pipeline is communicated with the inlet end or the outlet end of the first electronic expansion valve.

10. A HVAC equipment, characterized in that: The HVAC equipment includes the heat exchange system according to any one of claims 1 to 9.

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