Heat pump system

Abstract

The utility model discloses a heat pump system. The heat pump system comprises a heat exchange assembly, a lubricating assembly, a pressure relief assembly and a driving assembly. The heat exchange assembly comprises a compressor, a first heat exchanger, a second heat exchanger and a refrigerant circulation loop. The lubricating assembly comprises a lubricating circulation loop connected with the compressor. The pressure relief assembly comprises a pressure relief flow channel connected with the refrigerant circulation loop and the lubrication circulation loop. The driving assembly is used for driving fluid in the pressure relief flow channel to flow from the lubricating circulation loop to the refrigerant circulation loop. According to the heat pump system, the pressure relief efficiency of the lubricating circulation loop in the heat pump system can be improved, and the working stability of the heat pump system is improved.

Description

Technical Field

[0001] The present application relates to a heat pump system. Background Art

[0002] A heat pump system is a system that uses a low-temperature heat source (such as air, geothermal heat, water source, etc.) to provide heating or cooling. The heat pump system transfers heat between the low-temperature heat source and the high-temperature heat source through a circulating working fluid, thereby achieving energy conversion during the heating and cooling process.

[0003] In the related art, the pressure relief efficiency of the lubrication circulation loop in the heat pump system is low, and the pressure relief is not smooth under severe working conditions, which affects the normal operation of the heat pump system. Utility Model Content

[0004] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0005] To this end, one purpose of the present application is to provide a heat pump system that can improve the pressure relief efficiency of the lubrication circulation loop in the heat pump system and improve the working stability of the heat pump system.

[0006] According to the heat pump system in the embodiment of the present application, the heat pump system includes:

[0007] A heat exchange component, the heat exchange component comprising a compressor, a first heat exchanger, a second heat exchanger and a refrigerant circulation loop;

[0008] a lubrication assembly, the lubrication assembly comprising a lubrication circulation loop connected to the compressor;

[0009] A pressure relief component, the pressure relief component comprising pressure relief channels respectively connected to the refrigerant circulation circuit and the lubrication circulation circuit;

[0010] A drive assembly is used to drive the fluid in the pressure relief channel to flow from the lubrication circulation circuit to the refrigerant circulation circuit.

[0011] According to the heat pump system in the embodiment of the present application, the pressure relief efficiency of the lubrication circulation loop in the heat pump system can be improved, and the working stability of the heat pump system can be improved.

[0012] In addition, the heat pump system according to the above embodiment of the present application may also have the following additional technical features:

[0013] Optionally, the driving assembly is connected to the pressure relief assembly and is configured to adjust the fluid flow of the pressure relief channel according to the pipeline pressure of the refrigerant circulation loop.

[0014] Optionally, the driving assembly includes a first part and a second part, the first part is connected to the refrigerant circulation loop, the second part is connected to the pressure relief channel, and the first part is configured to control the driving power of the second part according to the pipeline pressure of the refrigerant circulation loop to adjust the fluid flow rate of the pressure relief channel.

[0015] Optionally, the first part includes a power input end, which is driven by the fluid in the refrigerant circulation loop, and the second part includes a power output end, which is used to drive the fluid in the pressure relief channel, and the power input end and the power output end transmit power.

[0016] Optionally, the first part includes a pressure detection unit for detecting the pipeline pressure of the refrigerant circulation loop, and the second part includes an execution unit for driving the fluid in the pressure relief channel, and the pressure detection unit transmits signals to the execution unit.

[0017] Optionally, the compressor, the first heat exchanger and the second heat exchanger are connected in sequence to form a first circuit, the first circuit is constructed as the refrigerant circulation circuit, and the driving component is configured to adjust the fluid flow of the pressure relief channel according to the pipeline pressure of the first circuit.

[0018] Optionally, the drive assembly is connected to the outlet of the compressor, the inlet of the first heat exchanger, the outlet of the first heat exchanger, the inlet of the second heat exchanger, the outlet of the second heat exchanger or the inlet of the compressor.

[0019] Optionally, the first heat exchanger, the cooling channel of the compressor and the second heat exchanger are connected in sequence to form a second circuit, the second circuit is constructed as the refrigerant circulation circuit, and the drive component is configured to adjust the fluid flow of the pressure relief channel according to the pipeline pressure of the second circuit.

[0020] Optionally, the drive assembly is connected to the outlet of the first heat exchanger, the inlet of the compressor, the outlet of the compressor or the inlet of the second heat exchanger.

[0021] Optionally, the fluid flow rate V1 of the refrigerant circulation loop is not less than the fluid flow rate V2 of the pressure relief channel.

[0022] Optionally, the compressor includes a first compression module and a second compression module, and the first compression module, the first heat exchanger, the second heat exchanger and the second compression module are sequentially connected to form the refrigerant circulation loop.

[0023] Optionally, the lubrication assembly further includes an oil tank, and the oil tank is connected to the compressor to form the lubrication circulation loop. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of a heat pump system in some embodiments of the present application.

[0025] Reference numerals:

[0026] Heat pump system 100, compressor 10, first compression module 11, second compression module 12, first heat exchanger 20, second heat exchanger 30, lubrication circulation loop 40, pressure relief channel 50, drive assembly 60, first part 61, second part 62, first loop 70, second loop 80, oil tank 90. DETAILED DESCRIPTION

[0027] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0028] Reference Figure 1 The present application proposes a heat pump system 100, which can improve the pressure relief efficiency of the lubrication circulation loop 40 in the heat pump system 100 and improve the working stability of the heat pump system 100. Figure 1 The dotted line in FIG. 4 is used to represent the lubrication circulation circuit 40; Figure 1 The double-dotted line in is used to represent the pressure relief flow channel 50; Figure 1 The dot-dash line in is used to represent the second loop 80; Figure 1 The solid line in is used to represent the first loop 70 .

[0029] According to the heat pump system 100 of the embodiment of the present application, the heat pump system 100 includes a heat exchange component, a lubrication component, a pressure relief component and a drive component 60 .

[0030] The heat exchange assembly includes a compressor 10, a first heat exchanger 20, a second heat exchanger 30 and a refrigerant circulation loop. The refrigerant circulation loop can be formed by connecting the compressor 10, the first heat exchanger 20 and the second heat exchanger 30 through a pipeline, so that the refrigerant can circulate back and forth between the compressor 10, the first heat exchanger 20 and the second heat exchanger 30 to realize the energy conversion of the heat pump system 100 to provide heating and cooling functions; in practice, the first heat exchanger 20 can be a condenser and the second heat exchanger 30 can be an evaporator. The lubrication assembly includes a lubrication circulation loop 40 connected to the compressor 10, and the lubrication circulation loop 40 has a flowing lubricating medium. The lubricating medium can circulate back and forth through the compressor 10 to provide lubrication for the compressor 10, and assist the compressor 10 in heat dissipation, thereby improving the working stability of the heat pump system 100.

[0031] The pressure relief component includes a pressure relief channel 50 respectively connected to the refrigerant circulation loop and the lubrication circulation loop 40. The pressure relief channel 50 is used to discharge the gaseous refrigerant in the lubrication circulation loop 40. For example, when the heat pump system 100 is running, part of the gaseous refrigerant may leak from the refrigerant circulation loop to the lubrication circulation loop 40 in the compressor 10, thereby affecting the performance of the lubricating medium in the lubrication circulation loop 40 and increasing the pressure of the lubrication circulation loop 40. Therefore, by setting the pressure relief channel 50, the gaseous refrigerant in the lubrication circulation loop 40 is transported back to the refrigerant circulation loop to improve the stability of the performance of the lubricating medium, avoid excessive pressure in the lubrication circulation loop 40, and improve the safety of the heat pump system 100.

[0032] However, under some severe working conditions, the lubrication circulation loop 40 may not release pressure smoothly; for example, the solubility of the gaseous refrigerant in the lubricating medium increases, resulting in poor pressure relief in the lubrication circulation loop 40; for another example, when the temperature difference changes greatly, the lubrication medium increases, which in turn increases the pressure of the lubrication circulation loop, resulting in poor pressure relief in the lubrication circulation loop 40. Therefore, the heat pump system 100 may be provided with a drive component 60, which is used to drive the fluid in the pressure relief channel 50 to flow from the lubrication circulation loop 40 to the refrigerant circulation loop, so as to improve the pressure relief efficiency of the lubrication circulation loop 40, thereby improving the working stability of the heat pump system 100.

[0033] In addition, generally speaking, severe working conditions will cause poor pressure relief in the lubrication circulation loop 40, which in turn will cause the lubricating medium in the lubrication circulation loop 40 to leak into the refrigerant circulation loop. Since the viscosity of the lubricating medium is higher than that of the refrigerant, the pressure in the refrigerant circulation loop increases. Therefore, in some embodiments of the present application, the drive component 60 is connected to the pressure relief component and is configured to adjust the fluid flow rate of the pressure relief channel 50 according to the pipeline pressure of the refrigerant circulation loop; in this way, under normal working conditions, the drive component 60 can adjust the fluid flow rate of the pressure relief channel 50 according to the pipeline pressure of the refrigerant circulation loop under normal working conditions, thereby discharging the gaseous refrigerant in the lubrication circulation loop 40 into the refrigerant circulation loop, and under severe working conditions, due to the increase in the pipeline pressure of the refrigerant circulation loop, the drive component 60 can adjust the fluid flow rate of the pressure relief channel 50 to facilitate the pressure relief of the lubrication circulation loop 40 and avoid the pressure increase of the lubrication circulation loop 40 causing the lubricating medium to further leak into the refrigerant circulation loop.

[0034] Of course, according to actual conditions, when the refrigerant circulation loop is in special working conditions, the drive component 60 can also increase the fluid flow rate of the pressure relief channel 50. For example, the temperature change increases the pressure difference between the first heat exchanger 20 and the second heat exchanger 30 in the refrigerant circulation loop, causing the gaseous refrigerant in the refrigerant circulation loop to leak into the lubrication circulation loop 40, resulting in an increase in the pressure of the lubrication circulation loop 40. At this time, the drive component 60 can increase the fluid flow rate of the pressure relief channel 50 according to the refrigerant circulation loop pipeline pressure to achieve pressure relief for the lubrication circulation loop 40.

[0035] Reference Figure 1 In some embodiments of the present application, the drive assembly 60 may include a first part 61 and a second part 62, the first part 61 is connected to the refrigerant circulation loop, and the second part 62 is connected to the pressure relief channel 50, and the first part 61 is configured to control the driving power of the second part 62 according to the pipeline pressure of the refrigerant circulation loop to adjust the fluid flow rate of the pressure relief channel 50; in this way, under severe working conditions, the pipeline pressure of the refrigerant circulation loop increases, and the first part 61 can control the driving power of the second part 62 to increase according to the increased pipeline pressure of the refrigerant circulation loop, and after the driving power of the second part 62 increases, the fluid flow rate of the pressure relief channel 50 can be adjusted to increase, thereby relieving the pressure of the lubrication circulation loop 40 and preventing the lubricating medium in the lubrication circulation loop 40 from further leaking into the refrigerant circulation loop.

[0036] There are many ways to configure the drive assembly 60 in the present application, and the present application provides the following embodiments.

[0037] Example 1

[0038] Reference Figure 1 The first part 61 includes a power input end, which is driven by the fluid of the refrigerant circulation loop, and the second part 62 includes a power output end, which is used to drive the fluid of the pressure relief channel 50, and the power input end and the power output end transmit power; specifically, under severe working conditions, the pressure of the lubrication circulation loop 40 increases, causing the lubrication medium to leak into the refrigerant circulation loop, thereby causing the pressure of the refrigerant circulation loop to also increase, and generating a pressure difference in the refrigerant circulation loop to drive the power input end of the first part 61, and then, the power input end of the first part 61 can transmit power to the power output end of the second part 62, and the power output end of the second part 62 can drive the fluid flow in the pressure relief channel 50 to increase the fluid flow rate, thereby accelerating the discharge of refrigerant from the lubrication circulation loop 40, improving the pressure relief efficiency of the lubrication circulation loop 40, and avoiding the lubrication cutoff from continuing to leak into the refrigerant circulation loop; in other words, self-regulation of the lubrication circulation loop 40 can be achieved through the drive component 60.

[0039] Of course, under normal working conditions, the input end of the first part 61 can also be driven by the fluid in the refrigerant circulation loop, and transmit power to the power output end of the second part 62, thereby driving the fluid flow in the pressure relief channel 50, increasing the fluid flow rate, and improving the pressure relief efficiency of the lubrication circulation loop 40. In practice, the drive component 60 can be a bidirectional turbine.

[0040] Example 2

[0041] The first part 61 includes a pressure detection unit for detecting the pipeline pressure of the refrigerant circulation loop, and the second part 62 includes an execution unit for driving the fluid in the pressure relief channel 50, and the pressure detection unit and the execution unit transmit signals; specifically, under severe working conditions, the pressure of the lubrication circulation loop 40 increases, causing the lubrication medium to leak into the refrigerant circulation loop, thereby causing the pressure of the refrigerant circulation loop to also increase. At this time, the pressure detection unit of the first part 61 can detect the increase in pressure in the refrigerant circulation loop, and transmit signals to the execution unit of the second part 62, and drive the flow in the pressure relief channel 50 through the execution unit of the second part 62 to increase the fluid flow rate, thereby accelerating the discharge of the refrigerant from the lubrication circulation loop 40 and improving the pressure relief efficiency of the lubrication circulation loop 40.

[0042] Of course, under normal operating conditions, the pressure detection unit of the first part 61 can also detect the pipeline pressure in the refrigerant circulation loop, and transmit the signal with the execution unit of the second part 62 to drive the fluid flow in the pressure relief channel 50, increase the fluid flow rate, and thus improve the pressure relief efficiency of the lubrication circulation loop 40.

[0043] Reference Figure 1 In some embodiments of the present application, the compressor 10, the first heat exchanger 20 and the second heat exchanger 30 are sequentially connected to form a first loop 70, the first loop 70 is configured as a refrigerant circulation loop, and the driving component 60 is configured to adjust the fluid flow rate of the pressure relief channel 50 according to the pipeline pressure of the first loop 70; specifically, when the heat pump system 100 is working, the first loop 70 serves as the main loop of the heat pump system 100, and the refrigerant can circulate in the compressor 10, the first heat exchanger 20 and the second heat exchanger 30, thereby converting the electrical energy of the compressor 10 into thermal energy, or converting the energy in the first heat exchanger 70 into thermal energy. The power is transferred between the heat exchanger 20 and the second heat exchanger 30. In combination with the aforementioned embodiment, the driving component 60 includes a first part 61 and a second part 62. The power input end of the first part 61 can be connected to the first circuit 70 and driven by the refrigerant in the first circuit 70. The power output end of the second part 62 can be connected to the pressure relief channel 50 and drive the fluid in the pressure relief channel 50 to flow. In this way, the driving component 60 can convert the kinetic energy of the fluid in the first circuit 70 into the kinetic energy of the fluid in the pressure relief channel 50, thereby driving the refrigerant in the lubrication circulation circuit 40 to be discharged, thereby improving the pressure relief effect.

[0044] More specifically, the drive assembly 60 can be connected to the outlet of the compressor 10, the inlet of the first heat exchanger 20, the outlet of the first heat exchanger 20, the inlet of the second heat exchanger 30, the outlet of the second heat exchanger 30 or the inlet of the compressor 10; in this way, when the refrigerant flows through the aforementioned inlets and outlets, it can drive the power input end of the first part 61 so that the power input end transmits power to the power output end, thereby improving the pressure relief effect of the lubrication circulation circuit 40.

[0045] Reference Figure 1 In some embodiments of the present application, the first heat exchanger 20, the cooling channel of the compressor 10 and the second heat exchanger 30 are connected in sequence to form a second loop 80, the second loop 80 is constructed as a refrigerant circulation loop, and the drive component 60 is configured to adjust the fluid flow of the pressure relief channel 50 according to the pipeline pressure of the second loop 80; specifically, during the operation of the heat pump system 100, the second loop 80 serves as the cooling loop of the compressor 10, and the first heat exchanger 20 can discharge the liquid refrigerant to the second heat exchanger 30. During this process, part of the liquid refrigerant can flow to the cooling channel of the compressor 10, and become a gaseous refrigerant after absorbing heat, and finally merge into the gaseous refrigerant discharged from the second heat exchanger 30, thereby cooling the compressor 10 and improving the working stability of the heat pump system 100.

[0046] In combination with the aforementioned embodiment, the driving component 60 includes a first part 61 and a second part 62. The power input end of the first part 61 can be connected to the second circuit 80 and driven by the refrigerant in the second circuit 80. The power output end of the second part 62 can be connected to the pressure relief channel 50 and drive the fluid flow in the pressure relief channel 50. In this way, the driving component 60 can convert the fluid kinetic energy in the second circuit 80 into the fluid kinetic energy in the pressure relief channel 50, thereby driving the refrigerant in the lubrication circulation circuit 40 to be discharged, thereby improving the pressure relief effect.

[0047] And connecting the first part 61 of the driving component 60 to the second circuit 80 can reduce the kinetic energy loss caused by the driving component 60 to the first circuit 70, that is, reduce the kinetic energy loss caused to the main circuit; the kinetic energy of the second circuit 80 can also be recovered, that is, the kinetic energy in the cooling circuit can be recovered, thereby improving the energy utilization rate of the heat pump system 100.

[0048] More specifically, the drive assembly 60 is connected to the outlet of the first heat exchanger 20, the inlet of the compressor 10, the outlet of the compressor 10 or the inlet of the second heat exchanger 30; in this way, when the refrigerant flows through the aforementioned inlet and outlet, it can drive the power input end of the first part 61 so that the power input end transmits power to the power output end, thereby improving the pressure relief effect of the lubrication circulation circuit 40.

[0049] In some embodiments of the present application, the fluid flow rate V1 of the refrigerant circulation loop is not less than the fluid flow rate V2 of the pressure relief channel 50; specifically, in combination with the aforementioned embodiments, the drive assembly 60 includes a first part 61 and a second part 62, the power input end of the first part 61 is connected to the refrigerant circulation loop and is driven by the fluid in the refrigerant circulation loop, and the power output end of the second part 62 is connected to the pressure relief channel 50 and drives the fluid in the pressure relief channel 50, so that the fluid flow rate V1 of the refrigerant circulation loop can be made not less than the fluid flow rate V2 of the pressure relief channel 50; wherein, in the refrigerant circulation loop When the fluid flow rate V1 is greater than the fluid flow rate V2 of the pressure relief channel 50, the power input end of the first part 61 can recover the kinetic energy in the refrigerant circulation loop, and be used to provide power for the power output end of the second part 62 to drive the fluid flow in the pressure relief channel 50, thereby improving the pressure relief effect of the lubrication circulation loop 40; in addition, when the fluid flow rate V1 of the refrigerant circulation loop is equal to the fluid flow rate V2 of the pressure relief channel 50, the driving component 60 can drive the fluid in the pressure relief channel 50 to discharge the lubrication circulation loop 40, thereby preventing the second part 62 of the driving component 60 from hindering the fluid flow in the pressure relief channel 50.

[0050] Reference Figure 1 In some embodiments of the present application, the compressor 10 includes a first compression module 11 and a second compression module 12, and the first compression module 11, the first heat exchanger 20, the second heat exchanger 30 and the second compression module 12 are sequentially connected to form a refrigerant circulation loop; specifically, in combination with the aforementioned embodiments, the first compression module 11, the first heat exchanger 20, the second heat exchanger 30 and the second compression module 12 can be sequentially connected to form a first loop 70, and the first loop 70 serves as the working main loop of the heat pump system 100; wherein the first heat exchanger 20 can discharge liquid refrigerant to the second heat exchanger 30, and the liquid refrigerant absorbs heat in the second heat exchanger 30 to become a gaseous refrigerant, and then flows through the second compression module 12 and the first compression module 11 in sequence, and is heated and pressurized under the action of the compression modules, and then the gaseous refrigerant can flow to the first heat exchanger 20, and The heat is released in the first heat exchanger 20 to become liquid refrigerant, completing a cycle in the first loop 70; in addition, the first heat exchanger 20, the cooling channel of the first compression module 11 and the second heat exchanger 30 can be connected in sequence to form a second loop 80. The second loop 80 serves as the cooling loop of the first compression module 11. The first heat exchanger 20 can discharge liquid refrigerant to the second heat exchanger 30, and part of the liquid refrigerant can flow to the cooling channel of the first compression module 11, and become gaseous refrigerant after cooling the first compression module 11. The gaseous refrigerant can flow to the second heat exchanger 30 to merge with the gaseous refrigerant discharged from the second heat exchanger 30, or can flow directly to the second compression module 12; of course, part of the liquid refrigerant discharged from the first heat exchanger 20 can also flow to the cooling channel of the second compression module 12 to cool the second compression module 12.

[0051] Reference Figure 1 In some embodiments of the present application, the lubrication assembly may further include an oil tank 90, which is connected to the compressor 10 to form a lubrication circulation loop 40; specifically, in combination with the aforementioned embodiments, the oil tank 90 may be respectively connected to the first compression module 11 and the second compression module 12 to form a lubrication circulation loop 40, and the lubricating medium may circulate between the oil tank 90 and the first compression module 11, and circulate between the oil tank 90 and the second compression module 12 to reduce the friction generated during the operation of the first compression module 11 and the second compression module 12, thereby improving the working stability of the heat pump system 100.

[0052] In some specific examples of the present application, the A end (i.e., the power input end) and the B end (i.e., the power output end) of a bidirectional turbine (i.e., the drive assembly 60) can be installed on the second circuit 80 and the pressure relief channel 50, respectively: wherein the A end of the bidirectional turbine is used to recover the power energy wasted on the second circuit 80, and is driven by the pressure difference of the liquid refrigerant in the second circuit 80 while ensuring the normal cooling effect. In addition, the amount of power energy that can be recovered at the A end of the bidirectional turbine can be judged according to the cooling effect of the compressor 10. When the A end of the bidirectional turbine rotates, it will drive the other end, the B end, to rotate, and then accelerate the turbine at the B end. After the turbine at the B end is accelerated, the pressure relief capacity of the pressure relief assembly will be increased, further reducing the pressure of the lubrication circulation circuit 40, and preventing the lubrication medium in the lubrication circulation circuit 40 from continuously leaking into the refrigerant circulation circuit.

[0053] In some specific examples of the present application, the heat pump system 100 has a self-adjusting suction capacity: the flow rate at end A from the two-way turbine will always be greater than the flow rate at end B, which ensures that end B is continuously sucked under normal circumstances. And as the pressure difference increases, the flow rate at end A will further increase, and after the pressure difference increases, the gaseous refrigerant will leak into the lubrication circulation loop 40, causing the pressure of the lubrication circulation loop 40 to rise synchronously. Therefore, as the pressure difference increases, the two-way turbine will self-adjust the suction capacity, further reducing the pressure of the lubrication circulation loop 40 under severe working conditions, and preventing the lubricating medium of the lubrication circulation loop 40 under severe working conditions from continuously leaking into the refrigerant circulation loop.

[0054] The second circuit 80 drives the A end of the bidirectional turbine.

[0055] ① The A end of the bidirectional turbine is installed in the second circuit 80. When the heat pump system 100 works normally, the pressure difference of the liquid refrigerant will drive the A end of the bidirectional turbine to rotate.

[0056] ② As the heat pump system 100 enters a severe operating condition, the pressure difference between the condenser (i.e., the first heat exchanger 20) and the evaporator (i.e., the second heat exchanger 30) will increase, which will simultaneously increase the pressure difference of the second circuit 80 and drive the speed of the bidirectional turbine A end to increase.

[0057] In addition, the A end of the bidirectional turbine is connected to the B end, and a seal is arranged in between to prevent refrigerant leakage; the turbine driving directions of the A end and the B end of the bidirectional turbine are opposite, refer to Figure 1 When the turbine A end is driven to flow upward, the rotation of the turbine at the B end will drive the airflow to flow downward, so as to achieve the effect that when the A end rotates, the B end accelerates the suction of gaseous refrigerant from the lubrication circulation circuit 40.

[0058] Secondly, the B end of the two-way turbine drives the gas flow and accelerates the suction; the initial design of the driving balance: in the initial case, the driving speed of the A end is greater than the driving speed caused by the normal flow rate in the pressure relief channel 50. In other words, in the initial state, the speed of the B end will not drive the A end instead; as the speed of the A end increases, the speed of the B end will increase synchronously. After the speed increases, the turbine will provide greater suction capacity, sucking gas from the oil tank 90 and discharging it into the evaporator, so the pressure of the oil tank 90 can be relieved; and the speed of the B end changes proportionally with the A end. When the pressure difference increases and causes the speed of the A end to increase, the speed of the B end increases synchronously, which is more conducive to discharging the gas in the oil tank 90. ​​(When the pressure difference increases, internal leakage will generally increase, that is, more gas will enter the oil tank 90)

[0059] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are 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 device or element referred to 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0064] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A heat pump system, characterized in that: include: A heat exchange component, the heat exchange component comprising a compressor (10), a first heat exchanger (20), a second heat exchanger (30) and a refrigerant circulation loop; A lubrication assembly, the lubrication assembly comprising a lubrication circulation circuit (40) connected to the compressor (10); A pressure relief component, the pressure relief component comprising a pressure relief flow channel (50) respectively connected to the refrigerant circulation circuit and the lubrication circulation circuit (40); A drive component (60) is used to drive the fluid in the pressure relief channel (50) to flow from the lubrication circulation circuit (40) to the refrigerant circulation circuit.

2. The heat pump system according to claim 1, characterized in that: The driving component (60) is connected to the pressure relief component and is configured to adjust the fluid flow of the pressure relief channel (50) according to the pipeline pressure of the refrigerant circulation loop.

3. The heat pump system according to claim 2, characterized in that: The driving component (60) includes a first part (61) and a second part (62), wherein the first part (61) is connected to the refrigerant circulation circuit, and the second part (62) is connected to the pressure relief channel (50), and the first part (61) is configured to control the driving power of the second part (62) according to the pipeline pressure of the refrigerant circulation circuit to adjust the fluid flow of the pressure relief channel (50).

4. The heat pump system according to claim 3, characterized in that: The first part (61) includes a power input end, which is driven by the fluid of the refrigerant circulation circuit. The second part (62) includes a power output end, which is used to drive the fluid of the pressure relief channel (50). The power input end and the power output end transmit power.

5. The heat pump system according to claim 3, characterized in that: The first part (61) includes a pressure detection unit for detecting the pipeline pressure of the refrigerant circulation loop, and the second part (62) includes an execution unit for driving the fluid in the pressure relief channel (50), and the pressure detection unit transmits signals to the execution unit.

6. The heat pump system according to any one of claims 1 to 5, characterized in that: The compressor (10), the first heat exchanger (20) and the second heat exchanger (30) are sequentially connected to form a first circuit (70), the first circuit (70) is constructed as the refrigerant circulation circuit, and the drive component (60) is configured to adjust the fluid flow of the pressure relief channel (50) according to the pipeline pressure of the first circuit (70).

7. The heat pump system according to claim 6, characterized in that: The drive assembly (60) is connected to the outlet of the compressor (10), the inlet of the first heat exchanger (20), the outlet of the first heat exchanger (20), the inlet of the second heat exchanger (30), the outlet of the second heat exchanger (30) or the inlet of the compressor (10).

8. The heat pump system according to any one of claims 1 to 5, characterized in that: The first heat exchanger (20), the cooling channel of the compressor (10) and the second heat exchanger (30) are connected in sequence to form a second circuit (80), the second circuit (80) is constructed as the refrigerant circulation circuit, and the drive component (60) is configured to adjust the fluid flow of the pressure relief channel (50) according to the pipeline pressure of the second circuit (80).

9. The heat pump system according to claim 8, characterized in that: The driving component (60) is connected to the outlet of the first heat exchanger (20), the inlet of the compressor (10), the outlet of the compressor (10) or the inlet of the second heat exchanger (30).

10. The heat pump system according to claim 4, characterized in that: The fluid flow rate V1 of the refrigerant circulation loop is not less than the fluid flow rate V2 of the pressure relief channel (50).

11. The heat pump system according to claim 1, characterized in that: The compressor (10) comprises a first compression module (11) and a second compression module (12), wherein the first compression module (11), the first heat exchanger (20), the second heat exchanger (30) and the second compression module (12) are sequentially connected to form the refrigerant circulation loop; And / or, the lubrication assembly further comprises an oil tank (90), and the oil tank (90) is connected to the compressor (10) to form the lubrication circulation loop (40).

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