Compressor and refrigerator

Abstract

The embodiment of the invention provides a compressor and a refrigerator, and relates to the technical field of refrigeration. The compressor comprises a compressor shell assembly, a cooler, a first compression piston and a second compression piston, the first compression piston and the second compression piston are oppositely arranged in a spaced mode, a compression cavity is formed between the first compression piston and the second compression piston, and the compression cavity is suitable for being connected with an expansion machine; the compression cavity comprises a first wall face, facing the second compression piston, of the first compression piston, a second wall face, facing the first compression piston, of the second compression piston and a peripheral wall arranged between the first wall face and the second wall face. The cooler is arranged on the peripheral wall and used for cooling a working medium in the compression cavity. The method is used for preventing the working medium output by the compressor from influencing the refrigeration effect.

Description

Technical Field

[0001] This application relates to the field of refrigeration technology, and more particularly to a compressor and a refrigeration machine. Background Technology

[0002] A refrigeration unit is a device used to cool equipment. In existing technology, refrigeration units typically use a compressor to compress a working fluid, driving the fluid to transfer heat in a refrigeration cycle, thereby cooling the equipment. However, the compressor's operation during operation can affect the cooling effect of the refrigeration unit, thus impacting its cooling efficiency. Summary of the Invention

[0003] This application provides a compressor and a refrigeration machine to avoid the working fluid output by the compressor affecting the refrigeration effect.

[0004] The first aspect of this application provides a compressor, which includes a compressor housing assembly, a cooler, a first compression piston and a second compression piston, the first compression piston and the second compression piston being disposed opposite to and spaced apart, and a compression chamber being provided between the first compression piston and the second compression piston, the compression chamber being adapted to be connected to an expander; the compression chamber includes a first wall surface of the first compression piston facing the second compression piston, a second wall surface of the second compression piston facing the first compression piston, and a peripheral wall disposed between the first wall surface and the second wall surface, and the cooler being disposed on the peripheral wall and used to cool the working fluid in the compression chamber.

[0005] As can be seen from the compressor provided in the first aspect above, this application can cool the working fluid in the compression chamber by setting the cooler on the peripheral wall of the compression chamber, thereby reducing the temperature of the working fluid output by the compressor and thus reducing the impact of the working fluid output by the compressor on the refrigeration effect.

[0006] In conjunction with the first implementation of the first aspect, the cooler is located inside the compressor housing assembly and conducts heat through the peripheral wall.

[0007] As can be seen from the first implementation method described above, the cooler is located inside the compressor housing assembly and conducts heat through the peripheral wall. It can transfer the heat of the working fluid in the compression chamber to the cooler through the peripheral wall, thereby achieving the cooling of the working fluid in the compression chamber and facilitating the installation of the cooler inside the compressor housing assembly.

[0008] In conjunction with the second implementation of the first aspect, the cooler is disposed on the wall of a portion of the compressor housing assembly facing the compression chamber, and the cooler forms at least a portion of the peripheral wall.

[0009] As can be seen from the second implementation method described above, the cooler forms at least part of the peripheral wall, which allows the cooler to be set directly towards the compression chamber, thereby facilitating heat exchange between the cooler and the working fluid in the compression chamber and improving the cooling effect on the working fluid in the compression chamber.

[0010] In combination with the third implementation method of the first aspect, the cooler is arranged around the compression chamber.

[0011] As can be seen from the third implementation method above, the cooler is arranged around the compression chamber, which can cool the working fluid in the circumferential range of the compression chamber, thereby improving the uniformity of cooling of the working fluid in the compression chamber.

[0012] In conjunction with the fourth implementation of the first aspect, the cooler is located between the first compression piston and the second compression piston.

[0013] As can be seen from the fourth implementation method above, the cooler is located between the first compression piston and the second compression piston, and can cool the working fluid located between the first compression piston and the second compression piston, thereby helping to reduce the temperature of the working fluid in the compression chamber.

[0014] In conjunction with the fifth implementation of the first aspect, the first compression piston and the second compression piston move closer to or further away from each other along the first direction. When the first compression piston and the second compression piston are in the compression position, the size of the compression chamber in the first direction is a first distance. When the first compression piston and the second compression piston are in the expansion position, the size of the compression chamber in the first direction is a second distance. The first distance is less than the second distance. The diameter of the orifice formed by the cooler around the compression chamber is greater than or equal to the diameter of the first compression piston and / or the second compression piston, and the size of the cooler in the first direction is greater than or equal to the first distance.

[0015] As can be seen from the fifth implementation method above, the diameter of the orifice formed by the cooler around the compression chamber is greater than or equal to the diameter of the first compression piston and / or the second compression piston, which can provide clearance space for the movement of the first compression piston and / or the second compression piston, thereby helping to avoid interference of the cooler with the movement of the first compression piston and the second compression piston; the dimension of the cooler in the first direction is greater than or equal to the first distance, which enables the cooler to still be set in the compression chamber when the first compression piston and the second compression piston are in the compression position, so as to cool the working fluid in the compression chamber.

[0016] In conjunction with the sixth implementation method of the first aspect, the dimension of the cooler in the first direction is less than or equal to the second distance.

[0017] As can be seen from the sixth implementation method above, the size of the cooler in the first direction is less than or equal to the second distance, which enables the size of the cooler in the first direction to match the size of the compression chamber in the first direction when the compression chamber is in the expansion position, thereby facilitating the setting of the cooler at the position corresponding to the compression chamber.

[0018] In conjunction with the seventh implementation of the first aspect, a heat dissipation structure is provided on the surface of some compressor housing components facing away from the cooler.

[0019] As can be seen from the seventh implementation method above, some compressor housing components have a heat dissipation structure on the surface facing away from the cooler, which can dissipate the heat transferred by the cooler, thereby improving the heat dissipation effect of the cooler.

[0020] In conjunction with the eighth implementation method of the first aspect, the heat dissipation structure includes heat dissipation fins.

[0021] As can be seen from the eighth implementation method above, the heat dissipation structure includes heat dissipation fins, which can increase the heat dissipation area of ​​the heat dissipation structure, thereby improving the heat dissipation capacity of the heat dissipation structure.

[0022] In conjunction with the ninth implementation of the first aspect, the compressor housing assembly has an opening connecting the compression chamber to the outside, and part of the cooler is located inside the opening.

[0023] As can be seen from the ninth implementation method above, the compressor housing assembly has an opening that connects the compression chamber to the outside, and part of the cooler is located in the opening, which facilitates the installation of the cooler on the compressor housing assembly and is conducive to heat exchange between the cooler and the outside.

[0024] In conjunction with the tenth implementation of the first aspect, the cooler is a thermoelectric cooler, and the cold end of the thermoelectric cooler faces the compression chamber.

[0025] As can be seen from the tenth implementation method above, the cooler is a thermoelectric cooler, and the cold end of the thermoelectric cooler faces the compression chamber. The thermoelectric cooler can be used to cool the working fluid in the compression chamber, which is beneficial to reducing the temperature of the working fluid in the compression chamber.

[0026] In conjunction with the eleventh implementation of the first aspect, the compressor housing assembly and / or cooler are provided with a communication port, and the compression chamber is adapted to be connected to the expander through the communication port; the cooler includes a connecting cable, and the communication port and the connecting cable are arranged circumferentially along the compression chamber.

[0027] As can be seen from the eleventh implementation method above, the compressor housing assembly and / or cooler is provided with a communication port, and the compression chamber is suitable for connecting to the expander through the communication port, which can realize the communication between the compression chamber and the expander; the communication port and the connecting cable are arranged along the circumference of the compression chamber, which can make the connecting cable and the communication port distributed in the circumferential direction of the compression chamber, thereby facilitating the arrangement of the structure around the compression chamber.

[0028] In conjunction with the twelfth implementation of the first aspect, the compressor also includes a temperature sensor and a controller. The temperature sensor is used to detect the temperature of the working fluid in the compression chamber, and the controller is connected to the temperature sensor and the cooler, and is used to control and adjust the power of the cooler according to the working fluid temperature detected by the temperature sensor.

[0029] As can be seen from the twelfth implementation method above, the controller can adjust the power of the cooler according to the working fluid temperature detected by the temperature sensor, which is beneficial to adjust the working state of the cooler according to the temperature change of the working fluid in the compression chamber and improve the targeting of the cooling of the working fluid in the compression chamber.

[0030] A second aspect of this application provides a refrigeration machine, which includes an expander and a compressor as mentioned in any of the above implementations, wherein the compression chamber of the compressor is connected to the expander.

[0031] As can be seen from the refrigeration unit described in the second aspect above, the compressor is connected to the expander, and the working fluid compressed by the compressor can enter the expander to achieve a refrigeration cycle. Since the compressor can cool the working fluid in the compression chamber, thereby reducing the temperature rise of the working fluid during the compression process, the temperature of the working fluid entering the expander is relatively low, which is beneficial to improving the refrigeration effect of the expander, and thus to improving the refrigeration efficiency of the refrigeration unit. Attached Figure Description

[0032] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0033] Figure 1 A cross-sectional view of a refrigerator provided in an embodiment of this application; Figure 2 A cross-sectional view of a compressor provided in an embodiment of this application; Figure 3 for Figure 2 A partial schematic diagram of the cooler in a medium-density compressor; Figure 4 for Figure 2 A partial schematic diagram of the opening in the compressor. Figure 5 for Figure 2 Schematic diagram of the external structure of the air inlet of the medium compressor; Figure 6 for Figure 2 A schematic diagram of the external structure of the connection port of the compressor.

[0034] Figure label: 100 - Refrigeration unit; 101 - Compressor; 1011 - First compression piston; 1011a - First wall surface; 1012 - Second compression piston; 1012a - Second wall surface; 1013 - Compressor housing assembly; 1013a - Heat dissipation structure; 1013b - Opening; 1013c - Connecting port; 1013d - Inlet; 1013e ​​- Peripheral wall; Q1 - Compression chamber; 1014 - Cooler; 1014a - Connecting cable; 1015 - Temperature sensor; 1016 - First drive device; 1017 - Second drive device; 102 - Expander; 1021 - Expander housing assembly; 1022 - Expansion piston; Q2 - Expansion chamber. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines, the terms "connected" and "linked" as used in this application have the meaning of establishing electrical connection. The specific meaning needs to be understood in conjunction with the context.

[0038] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0039] Please see Figure 1First, the structure of the refrigerator 100 involved in the embodiments of this application will be described. To facilitate understanding of the technical solution of this application, the working principle of the refrigerator 100 will be described below using a Stirling refrigerator 100 as an example. It should be understood that the technical solution of this application is not limited to the Stirling refrigerator 100, but can also be applied to other refrigerators 100 with the same or similar working principles.

[0040] In some embodiments, see Figure 1 The refrigeration unit 100 includes a compressor 101 and an expander 102, which are connected together.

[0041] The compressor 101 is used to compress the working fluid to output the compressed working fluid, and the expander 102 is used to expand the working fluid to achieve refrigeration. After the compressor 101 and the expander 102 are connected, the working fluid output by the compressor 101 can flow to the expander 102, so that the working fluid flows between the compressor 101 and the expander 102 to form a refrigeration cycle.

[0042] Specifically, when the compressor 101 is working, it compresses the working fluid and delivers the compressed working fluid to the expander 102. After receiving the working fluid from the compressor 101, the expander 102 expands and cools the working fluid, thereby forming a low-temperature region to achieve refrigeration. Thus, the compressor 101 and the expander 102 cooperate to realize the compression and expansion process of the working fluid, thereby completing the heat transfer.

[0043] It should be understood that the specific connection method between the compressor 101 and the expander 102 is not limited in the embodiments of this application, as long as the working fluid output by the compressor 101 can enter the expander 102. For example, the compressor 101 and the expander 102 can be directly connected or connected through a connecting structure. The embodiments of this application do not limit this connection.

[0044] In some embodiments, see Figure 1 and combined Figure 2 The compressor 101 includes a compressor housing assembly 1013, a first compression piston 1011 and a second compression piston 1012. The first compression piston 1011 and the second compression piston 1012 are arranged opposite to each other and spaced apart. A compression chamber Q1 is provided between the first compression piston 1011 and the second compression piston 1012. The compression chamber Q1 is adapted to be connected to the expander 102.

[0045] The first compression piston 1011 and the second compression piston 1012 are both disposed within the compressor housing assembly 1013, and are arranged opposite to each other within the compressor housing assembly 1013. A compression chamber Q1 is formed between the first compression piston 1011 and the second compression piston 1012; that is, the compression chamber Q1 is located between the first compression piston 1011 and the second compression piston 1012, and its two ends are defined by the first compression piston 1011 and the second compression piston 1012, respectively. Thus, as the first compression piston 1011 and the second compression piston 1012 move, the volume of the compression chamber Q1 can change.

[0046] For example, when the first compression piston 1011 and the second compression piston 1012 move closer to each other, the volume of the compression chamber Q1 decreases, the working fluid in the compression chamber Q1 is compressed, and the working fluid pressure increases. When the first compression piston 1011 and the second compression piston 1012 move further apart, the volume of the compression chamber Q1 increases, and the compression chamber Q1 can hold more working fluid. Thus, the first compression piston 1011 and the second compression piston 1012 can compress the working fluid in the compression chamber Q1 through their coordinated movement.

[0047] The compression chamber Q1 is adapted to be connected to the expander 102, meaning that the compressed working fluid in the compression chamber Q1 can be output to the expander 102 for use by the expander 102. It should be understood that the specific connection method between the compression chamber Q1 and the expander 102 is not limited in this embodiment, as long as the working fluid in the compression chamber Q1 can be output and enter the expander 102. For example, the compression chamber Q1 can be directly connected to the expander 102, or it can be connected to the expander 102 through a connecting structure; this embodiment does not limit the specific connection method.

[0048] In some embodiments, see Figure 1 The expander 102 includes an expander housing assembly 1021 and an expansion piston 1022 disposed within the expander housing assembly 1021; the expander housing assembly 1021 is provided with an expansion chamber Q2, and a compression chamber Q1 is connected to the side of the expansion piston 1022 opposite to the expansion chamber Q2, and the expansion piston 1022 is provided with a connecting channel and a regenerator, the connecting channel connecting the side of the expansion piston 1022 opposite to the expansion chamber Q2 and the expansion chamber Q2.

[0049] The regenerator recovers both heat and cold. During the expansion and compression cycle of the Stirling Refrigeration 100, the working fluid (e.g., helium) flows back and forth between the cold and hot ends. The regenerator stores the heat released by the working fluid as it flows from the hot end to the cold end through its internal high specific heat capacity packing (such as wire mesh or porous material), and returns the stored heat to the working fluid when it flows in the reverse direction.

[0050] Specifically, the expander housing assembly 1021 is used to accommodate the expander piston 1022 and together with the expander piston 1022 forms the working space on the expansion side. The expander piston 1022 is movably disposed within the expander housing assembly 1021, and the expander piston 1022 divides the space within the expander housing assembly 1021 into an expansion chamber Q2 and a space on the side opposite to the expansion chamber Q2. The compression chamber Q1 communicates with the side of the expander piston 1022 opposite to the expansion chamber Q2, thereby allowing the working fluid in the compression chamber Q1 to enter the side of the expander piston 1022 opposite to the expansion chamber Q2.

[0051] The expansion piston 1022 has a connecting channel that connects the side of the expansion piston 1022 away from the expansion chamber Q2 and the expansion chamber Q2. This allows the working fluid entering the side of the expansion piston 1022 away from the expansion chamber Q2 to enter the expansion chamber Q2 via the connecting channel and expand within the expansion chamber Q2. Since the expansion piston 1022 also contains a regenerator, the working fluid can exchange heat with the regenerator during its passage through the connecting channel, thus achieving heat recovery.

[0052] For example, when the working fluid in the compression chamber Q1 is compressed and flows towards the side of the expansion piston 1022 away from the expansion chamber Q2, the working fluid can further enter the expansion chamber Q2 through the connecting channel to expand within the expansion chamber Q2. During the flow of the working fluid from the side of the expansion piston 1022 away from the expansion chamber Q2 to the expansion chamber Q2, it passes through a regenerator, which exchanges heat with the working fluid flowing through the connecting channel. Similarly, when the working fluid flows in the reverse direction, it also passes through the regenerator, allowing the regenerator to recover heat from the working fluid. This helps to reduce heat loss during the reciprocating flow of the working fluid.

[0053] To facilitate explanation of the working principle of the refrigerator 100, this application embodiment uses the refrigerator 100 for cooling a sensor as an example for illustrative purposes. The outer wall surface of the expansion chamber Q2 forms a cooling surface. When the refrigerator 100 is operating, a low-temperature region is formed on one side of the expansion chamber Q2. The cooling surface can exchange heat with this low-temperature region, thereby reducing the temperature of the cooling surface. The cooling surface can be disposed in close contact with the sensor or spaced apart from it, so as to cool the sensor through the cooling surface, thereby reducing the sensor's temperature.

[0054] In some embodiments, see Figure 2 and combined Figure 3The compressor 101 includes a cooler 1014 disposed within the compressor housing assembly 1013. The compression chamber Q1 includes a first wall surface 1011a of the first compression piston 1011 facing the second compression piston 1012, a second wall surface 1012a of the second compression piston 1012 facing the first compression piston 1011, and a peripheral wall 1013e ​​disposed between the first wall surface 1011a and the second wall surface 1012a. The cooler 1014 is disposed on the peripheral wall 1013e ​​and is used to cool the working fluid in the compression chamber Q1.

[0055] Specifically, the first compression piston 1011 and the second compression piston 1012 are both disposed within the compressor housing assembly 1013, and are arranged opposite to each other. The cooler 1014 is disposed within the compressor housing assembly 1013, located in the corresponding region between the first compression piston 1011 and the second compression piston 1012. The first compression piston 1011, the second compression piston 1012, and the cooler 1014 enclose and form a compression chamber Q1, meaning that the boundary of the compression chamber Q1 is at least partially defined by the first compression piston 1011, the second compression piston 1012, and the cooler 1014. That is, the cooler 1014 at least partially participates in the formation of the compression chamber Q1, allowing the side of the cooler 1014 facing the compression chamber Q1 to directly contact the working fluid within the compression chamber Q1 and exchange heat with it.

[0056] As the first compression piston 1011 and the second compression piston 1012 move, the volume of the space between them can change, thus forming a compression process for the working fluid. When the first compression piston 1011 and the second compression piston 1012 move closer to each other, the volume of the compression chamber Q1 decreases, the working fluid in the compression chamber Q1 is compressed, the working fluid pressure increases, and the working fluid is prone to temperature rise during the compression process. Since the cooler 1014 participates in the formation of the compression chamber Q1, it can directly cool the working fluid in the compression chamber Q1 to remove the heat generated by the working fluid during the compression process, thereby reducing the temperature rise of the working fluid.

[0057] It should be noted that in this application, the cooler 1014 is disposed on the compressor housing assembly 1013. This can be understood as the cooler 1014 being disposed at a corresponding position on the compressor housing assembly 1013 and associated with it. For example, the cooler 1014 can be embedded inside the compressor housing assembly 1013. In this case, the cooler 1014 does not directly face the compression chamber Q1, but exchanges heat with the working fluid in the compression chamber Q1 through a corresponding portion of the compressor housing assembly 1013. For example, the compressor housing assembly 1013 can also have a mounting port at a corresponding position, and the cooler 1014 is housed within the mounting port. In this case, the cooler 1014 can directly face the compression chamber Q1 and directly exchange heat with the working fluid in the compression chamber Q1. That is, the cooler 1014 is disposed in the compressor housing assembly 1013. This can be either the cooler 1014 being located inside the compressor housing assembly 1013 and corresponding to the compression chamber Q1 through the compressor housing assembly 1013, or the cooler 1014 being installed at an installation port opened in the compressor housing assembly 1013 and directly facing the compression chamber Q1. This application does not limit this. Furthermore, this application embodiment does not limit the specific type of cooler 1014, as long as the cooler 1014 can participate in the enclosure of the compression chamber Q1 and cool the working fluid inside the compression chamber Q1. For example, the cooler 1014 can be a thermoelectric cooler, or other cooling devices capable of reducing the temperature of the working fluid inside the compression chamber Q1; this application embodiment does not limit this.

[0058] In some embodiments, see Figure 2 and combined Figure 3 The cooler 1014 is located inside the compressor housing assembly 1013 and conducts heat through the peripheral wall 1013e.

[0059] The cooler 1014 is located within the compressor housing assembly 1013. This can be understood as the cooler 1014 being positioned within the installation space formed inside the compressor housing assembly 1013. The cooler 1014 does not directly face the compression chamber Q1; the peripheral wall 1013e ​​is located between the cooler 1014 and the compression chamber Q1. The heat conduction with the peripheral wall 1013e ​​can be understood as a heat transfer relationship between the cooler 1014 and the peripheral wall 1013e. The heat of the working fluid in the compression chamber Q1 can first be transferred to the peripheral wall 1013e, and then from the peripheral wall 1013e ​​to the cooler 1014, thereby achieving the cooling of the working fluid in the compression chamber Q1.

[0060] That is, the cooler 1014 does not directly contact the working fluid in the compression chamber Q1, but indirectly exchanges heat with the working fluid in the compression chamber Q1 through the peripheral wall 1013e.

[0061] For example, when the temperature of the working fluid in the compression chamber Q1 rises, the heat of the working fluid in the compression chamber Q1 can be transferred to the peripheral wall 1013e, and the peripheral wall 1013e ​​then transfers the heat to the cooler 1014 disposed in the compressor housing assembly 1013. After absorbing the heat transferred by the peripheral wall 1013e, the cooler 1014 can reduce the temperature of the corresponding area of ​​the peripheral wall 1013e, thereby continuously transferring the heat of the working fluid in the compression chamber Q1 to the peripheral wall 1013e ​​and the cooler 1014, so as to achieve cooling of the working fluid in the compression chamber Q1. Thus, although the cooler 1014 is not directly facing the compression chamber Q1, it can still cool the working fluid in the compression chamber Q1 through heat conduction with the peripheral wall 1013e.

[0062] For example, heat conduction between the cooler 1014 and the peripheral wall 1013e ​​can also be understood as a heat conduction path between the cooler 1014 and the compressor housing assembly 1013 portion forming the peripheral wall 1013e, allowing heat to be transferred from the peripheral wall 1013e ​​to the cooler 1014 via this heat conduction path. As long as heat transfer between the peripheral wall 1013e ​​and the cooler 1014 can be achieved, heat conduction between the cooler 1014 and the peripheral wall 1013e ​​can be considered. This application does not limit the specific connection structure or specific heat conduction method between the cooler 1014 and the peripheral wall 1013e.

[0063] In some embodiments, see Figure 2 and combined Figure 3 The cooler 1014 is disposed on the wall of a portion of the compressor housing assembly 1013 facing the compression chamber Q1, and the cooler 1014 forms at least a portion of the peripheral wall 1013e.

[0064] The compressor housing assembly 1013 forms at least a portion of the boundary of the compression chamber Q1. A portion of the wall surface of the compressor housing assembly 1013 facing the compression chamber Q1, located at the corresponding position of the circumferential boundary of the compression chamber Q1, is formed by a cooler 1014. That is, the cooler 1014 is disposed at the corresponding position of the compressor housing assembly 1013 facing the compression chamber Q1 and directly participates in the formation of the circumferential wall 1013e ​​of the compression chamber Q1. Thus, the side of the cooler 1014 facing the compression chamber Q1 can directly face the working fluid inside the compression chamber Q1 for cooling the working fluid inside the compression chamber Q1.

[0065] In some embodiments, see Figure 2 and combined Figure 3The compressor housing assembly 1013 may have a mounting portion on the corresponding wall surface facing the compression chamber Q1. After the cooler 1014 is disposed at the mounting portion, the surface of the cooler 1014 facing the compression chamber Q1 forms at least a portion of the peripheral wall 1013e. Exemplarily, the wall surface of the compressor housing assembly 1013 facing the compression chamber Q1 may have a receiving opening or a mounting groove. After the cooler 1014 is received in the receiving opening or mounting groove, the surface of the cooler 1014 facing the compression chamber Q1 directly serves as part of the peripheral wall 1013e, thus jointly enclosing the compression chamber Q1 with other portions of the peripheral wall 1013e ​​formed by the compressor housing assembly 1013. In this way, the compressor housing assembly 1013 can install and support the cooler 1014, and the cooler 1014 can also be directly positioned facing the working fluid inside the compression chamber Q1.

[0066] In some embodiments, see Figure 2 and combined Figure 3 The surface of the cooler 1014 facing the compression chamber Q1 may be flush with other portions of the compressor housing assembly 1013 forming the peripheral wall 1013e, so that the peripheral wall 1013e ​​forms a relatively continuous wall structure. In some embodiments, the surface of the cooler 1014 facing the compression chamber Q1 may also protrude into the compression chamber Q1 relative to the adjacent peripheral wall 1013e, or be recessed in a direction away from the compression chamber Q1 relative to the adjacent peripheral wall 1013e. Regardless of the relative positional relationship between the surface of the cooler 1014 facing the compression chamber Q1 and the adjacent peripheral wall 1013e, as long as the cooler 1014 forms at least a portion of the peripheral wall 1013e, it falls within the protection scope of this application.

[0067] In some embodiments, see Figure 2 and combined Figure 3 The peripheral wall 1013e ​​formed by the cooler 1014 can be a single region or multiple regions. When the peripheral wall 1013e ​​formed by the cooler 1014 is a single region, the cooler 1014 can be located at a local position on the compressor housing assembly 1013 facing the compression chamber Q1. When the peripheral wall 1013e ​​formed by the cooler 1014 is multiple regions, multiple coolers 1014 can be respectively located at multiple positions on the compressor housing assembly 1013 facing the compression chamber Q1, or different parts of the same cooler 1014 can correspond to forming multiple regions of the peripheral wall 1013e. This application does not limit the specific range and distribution of the peripheral wall 1013e ​​formed by the cooler 1014.

[0068] It should be noted that the peripheral wall 1013e ​​formed by the cooler 1014 can be a partial peripheral wall 1013e ​​or a larger peripheral wall 1013e. That is, as long as at least a portion of the wall surface of the compressor housing assembly 1013 facing the compression chamber Q1 is formed by the cooler 1014, the cooler 1014 can be considered to form at least a partial peripheral wall 1013e. This application does not limit the size or proportion of the peripheral wall 1013e ​​formed by the cooler 1014.

[0069] Furthermore, the cooler 1014 and the compressor housing assembly 1013 can be connected and fixed in any suitable manner, as long as the cooler 1014 is stably positioned on the corresponding wall surface of the compressor housing assembly 1013 facing the compression chamber Q1, and forms at least a partial peripheral wall 1013e. This application does not limit the specific connection structure between the cooler 1014 and the compressor housing assembly 1013. A sealing structure can also be provided between the cooler 1014 and the compressor housing assembly 1013 to reduce the possibility of leakage of the working fluid in the compression chamber Q1 from the connection point between the cooler 1014 and the compressor housing assembly 1013.

[0070] Since the cooler 1014 forms at least a partial peripheral wall 1013e, the cooler 1014 can be directly positioned towards the working fluid in the compression chamber Q1, thereby reducing the heat transfer links between the working fluid in the compression chamber Q1 and the cooler 1014. This facilitates the cooler 1014 to directly cool the working fluid in the compression chamber Q1, thereby reducing the temperature of the working fluid in the compression chamber Q1 and reducing the impact of the working fluid output by the compressor 101 on the refrigeration effect.

[0071] In some embodiments, see Figure 2 and combined Figure 3 The cooler 1014 is arranged around the compression chamber Q1. That is, the cooler 1014 is arranged around the compression chamber Q1 along the circumference, so that there is a cooler 1014 at each point around the compression chamber Q1. In this way, the cooler 1014 can cool the working fluid within the circumference of the compression chamber Q1, thereby reducing the temperature of the working fluid inside the compression chamber Q1.

[0072] In some embodiments, see Figure 2 and combined Figure 3 The cooler 1014 can be continuously arranged along the circumference of the compression chamber Q1. For example, the cooler 1014 can form a continuous annular structure around the compression chamber Q1, so that the working fluid at each position in the circumference of the compression chamber Q1 can correspond to the cooler 1014. This facilitates continuous cooling of the working fluid within the compression chamber Q1 by the cooler 1014.

[0073] In some embodiments, see Figure 2 and combined Figure 3The cooler 1014 can also be segmented along the circumference of the compression chamber Q1. For example, the cooler 1014 may include multiple portions sequentially distributed along the circumference of the compression chamber Q1, with these portions collectively surrounding the compression chamber Q1. These portions can be spaced apart along the circumference of the compression chamber Q1, or they can be sequentially connected along the circumference of the compression chamber Q1, as long as the multiple portions together form a complete circumference around the compression chamber Q1. This application does not limit the specific number and distribution of the cooler 1014 along the circumference of the compression chamber Q1.

[0074] After the cooler 1014 is arranged around the compression chamber Q1, the cooler 1014 can be correspondingly arranged with the working fluid within the circumferential range of the compression chamber Q1, so that the working fluid at different circumferential positions in the compression chamber Q1 can be cooled. In this way, the temperature difference of the working fluid in the circumferential direction in the compression chamber Q1 can be reduced, and the uniformity of cooling of the working fluid in the compression chamber Q1 can be improved.

[0075] Furthermore, the number of coolers 1014 can be one or more. When there is only one cooler 1014, it can form a complete surrounding structure. When there are multiple coolers 1014, they can be distributed circumferentially along the compression chamber Q1 and together surround the compression chamber Q1. This application does not limit the specific number of coolers 1014.

[0076] By arranging the cooler 1014 around the compression chamber Q1, this application enables the cooler 1014 to cool the working fluid within the circumferential range of the compression chamber Q1, thereby facilitating more uniform cooling of the working fluid in the compression chamber Q1 and reducing the working fluid temperature output by the compressor 101.

[0077] In some embodiments, see Figure 2 and combined Figure 3 The cooler 1014 is located between the first compression piston 1011 and the second compression piston 1012. By placing the cooler 1014 between the first compression piston 1011 and the second compression piston 1012, the cooler 1014 can be located in the corresponding area of ​​the compression chamber Q1, which facilitates the cooling of the working fluid in the compression chamber Q1 by the cooler 1014 and helps to reduce the temperature of the working fluid in the compression chamber Q1.

[0078] The cooler 1014 is located between the first compression piston 1011 and the second compression piston 1012. That is, the cooler 1014 is disposed in the region opposite to the first compression piston 1011 and the second compression piston 1012, and is located at the corresponding position in the compression chamber Q1. In this way, the cooler 1014 can be positioned to cool the working fluid in the compression chamber Q1, corresponding to the working fluid between the first compression piston 1011 and the second compression piston 1012.

[0079] It should be noted that the cooler 1014 can be located at any suitable position between the first compression piston 1011 and the second compression piston 1012. For example, the cooler 1014 can be located close to the first compression piston 1011, close to the second compression piston 1012, or in the intermediate region between the first compression piston 1011 and the second compression piston 1012. This application does not limit the cooler 1014 as long as it is located between the first compression piston 1011 and the second compression piston 1012 and can cool the working fluid in the compression chamber Q1.

[0080] As the first compression piston 1011 and the second compression piston 1012 move relative to each other, the state of the compression chamber Q1 changes. The cooler 1014, located between the first compression piston 1011 and the second compression piston 1012, can always be positioned to correspond to the working fluid in the compression chamber Q1. Thus, during the compression of the working fluid by the first compression piston 1011 and the second compression piston 1012, the cooler 1014 can cool the working fluid located between the first compression piston 1011 and the second compression piston 1012, thereby reducing the temperature of the working fluid in the compression chamber Q1 and minimizing the impact of the working fluid output by the compressor 101 on the cooling effect.

[0081] In some embodiments, see Figure 2 and combined Figure 3 The first compression piston 1011 and the second compression piston 1012 move closer to or further away from each other along a first direction. When the first compression piston 1011 and the second compression piston 1012 are in the compression position, the size of the compression chamber Q1 in the first direction is a first distance. When the first compression piston 1011 and the second compression piston 1012 are in the expansion position, the size of the compression chamber Q1 in the first direction is a second distance. The first distance is less than the second distance. The diameter of the orifice formed by the cooler 1014 around the compression chamber Q1 is greater than or equal to the diameter of the first compression piston 1011 and / or the second compression piston 1012. The size of the cooler 1014 in the first direction is greater than or equal to the first distance.

[0082] The first direction can be understood as the direction of relative movement between the first compression piston 1011 and the second compression piston 1012. When the first compression piston 1011 and the second compression piston 1012 move closer to each other along the first direction, the distance between them decreases, and the size of the compression chamber Q1 in the first direction decreases accordingly. When the first compression piston 1011 and the second compression piston 1012 move further apart from each other along the first direction, the distance between them increases, and the size of the compression chamber Q1 in the first direction increases accordingly. That is, as the first compression piston 1011 and the second compression piston 1012 move relative to each other in the first direction, the size of the compression chamber Q1 in the first direction changes.

[0083] When the first compression piston 1011 and the second compression piston 1012 are in the compression position, it can be understood that the first compression piston 1011 and the second compression piston 1012 are relatively close together. At this time, the size of the compression chamber Q1 in the first direction is smaller, and this size of the compression chamber Q1 in the first direction is defined as the first distance. When the first compression piston 1011 and the second compression piston 1012 are in the expansion position, it can be understood that the first compression piston 1011 and the second compression piston 1012 are relatively far apart. At this time, the size of the compression chamber Q1 in the first direction is larger, and this size of the compression chamber Q1 in the first direction is defined as the second distance. The first distance is smaller than the second distance, that is, the size of the compression chamber Q1 in the first direction when it is in the compression position is smaller than the size of the compression chamber Q1 in the first direction when it is in the expansion position.

[0084] A cooler 1014 is disposed around the compression chamber Q1 and forms an orifice for the first compression piston 1011 and the second compression piston 1012 to be disposed accordingly. This orifice can be understood as the size of the opening 1013b formed by the cooler 1014 around the compression chamber Q1. The orifice formed by the cooler 1014 around the compression chamber Q1 is greater than or equal to the diameter of the first compression piston 1011 and / or the second compression piston 1012; that is, the size of the opening 1013b formed by the cooler 1014 is not less than the outer diameter of the corresponding first compression piston 1011 and / or the second compression piston 1012. Thus, during the relative movement of the first compression piston 1011 and the second compression piston 1012 along a first direction, the orifice formed by the cooler 1014 can provide corresponding clearance space for the first compression piston 1011 and / or the second compression piston 1012, thereby reducing the interference of the cooler 1014 on the movement of the first compression piston 1011 and the second compression piston 1012.

[0085] In some embodiments, see Figure 2 and combined Figure 3The diameter of the orifice formed by the cooler 1014 around the compression chamber Q1 is equal to the diameter of the first compression piston 1011 and / or the second compression piston 1012. In this way, the diameter of the orifice formed by the cooler 1014 is adapted to the diameter of the corresponding compression piston.

[0086] In some embodiments, see Figure 2 and combined Figure 3 The diameter of the orifice formed by the cooler 1014 around the compression chamber Q1 is larger than the diameter of the first compression piston 1011 and / or the second compression piston 1012. This creates a gap between the orifice formed by the cooler 1014 and the corresponding compression piston, allowing for clearance between the first and second compression pistons 1011 and 1012 and the cooler 1014 during movement. This application does not limit the specific difference between the orifice diameter and the diameter of the corresponding compression piston, as long as the diameter of the orifice formed by the cooler 1014 around the compression chamber Q1 is greater than or equal to the diameter of the first compression piston 1011 and / or the second compression piston 1012.

[0087] The dimension of the cooler 1014 in the first direction is greater than or equal to the first distance. This can be understood as the extension dimension of the cooler 1014 along the first direction being no less than the dimension of the compression chamber Q1 in the first direction when it is in the compression position. That is, when the first compression piston 1011 and the second compression piston 1012 move to the compression position, the range of the cooler 1014 in the first direction still corresponds to the size range of the compression chamber Q1 when it is in the compression position. Thus, the cooler 1014 can still be positioned corresponding to the compression chamber Q1 when the first compression piston 1011 and the second compression piston 1012 are in the compression position, so as to cool the working fluid inside the compression chamber Q1.

[0088] In some embodiments, see Figure 2 and combined Figure 3 The dimension of the cooler 1014 in the first direction is equal to the first distance. At this time, the dimension of the cooler 1014 in the first direction matches the dimension of the compression chamber Q1 in the first direction when it is in the compression position.

[0089] In some embodiments, see Figure 2 and combined Figure 3 The dimension of the cooler 1014 in the first direction is greater than the first distance. At this time, the dimension of the cooler 1014 in the first direction is greater than the dimension of the compression chamber Q1 in the first direction when it is in the compression position, thereby giving the cooler 1014 a larger corresponding range in the first direction.

[0090] This application does not limit the specific dimensions of the cooler 1014 in the first direction, as long as the dimension of the cooler 1014 in the first direction is greater than or equal to the first distance.

[0091] In some embodiments, see Figure 2 and combined Figure 3 The dimension of the cooler 1014 in the first direction is less than or equal to the second distance.

[0092] When the first compression piston 1011 and the second compression piston 1012 move away from each other along the first direction to the expansion position, the compression cavity Q1 formed between the first compression piston 1011 and the second compression piston 1012 has a larger size in the first direction, which is the second distance.

[0093] The dimension of the cooler 1014 in the first direction is less than or equal to the second distance. This can be understood as the extension dimension of the cooler 1014 along the first direction not being greater than the dimension of the compression chamber Q1 in the first direction when it is in the expanded position. In this way, the dimension of the cooler 1014 in the first direction can be adapted to the size range of the compression chamber Q1 when it is in the expanded position, thereby facilitating the setting of the cooler 1014 corresponding to the compression chamber Q1.

[0094] For example, the dimension of the cooler 1014 in the first direction can be equal to the second distance. In this case, the dimension of the cooler 1014 in the first direction matches the dimension of the compression chamber Q1 in the first direction when it is in the expanded position. That is, the extension range of the cooler 1014 in the first direction can correspond to the dimension range of the compression chamber Q1 in the first direction when it is in the expanded position.

[0095] For example, the dimension of the cooler 1014 in the first direction may also be smaller than the second distance. In this case, the extension dimension of the cooler 1014 in the first direction is smaller than the dimension of the compression chamber Q1 in the first direction when it is in the expanded position. That is, the coverage area of ​​the cooler 1014 in the first direction is smaller than the entire dimension range of the compression chamber Q1 in the first direction when it is in the expanded position, but it can still be disposed in the corresponding area of ​​the compression chamber Q1 to cool the working fluid in the compression chamber Q1.

[0096] This application does not limit the specific dimensions of the cooler 1014 in the first direction or the specific difference between it and the second distance, as long as the dimension of the cooler 1014 in the first direction is less than or equal to the second distance.

[0097] Regardless of whether the dimension of the cooler 1014 in the first direction is equal to or less than the second distance, the dimension of the cooler 1014 in the first direction can be coordinated with the dimension of the compression chamber Q1 when it is in the expansion position. This facilitates the installation of the cooler 1014 in the corresponding area of ​​the compression chamber Q1 and enables the cooling of the working fluid in the compression chamber Q1.

[0098] In some embodiments, see Figure 2 and combined Figure 3A heat dissipation structure 1013a is provided on the surface of part of the compressor housing assembly 1013 that faces away from the cooler 1014.

[0099] Specifically, the cooler 1014 is located inside the compressor housing assembly 1013, and the heat dissipation structure 1013a is located on the outer surface of the compressor housing assembly 1013 corresponding to the cooler 1014, so that the compressor housing assembly 1013 is located between the cooler 1014 and the heat dissipation structure 1013a. In this way, the heat transferred by the cooler 1014 during the cooling of the working fluid in the compression chamber Q1 can be conducted through the compressor housing assembly 1013 to the heat dissipation structure 1013a, and then dissipated to the outside by the heat dissipation structure 1013a.

[0100] The heat dissipation structure 1013a can be a heat dissipation part formed within the compressor housing assembly 1013 itself. That is, the heat dissipation structure 1013a can be integrally formed with the compressor housing assembly 1013. For example, the compressor housing assembly 1013 can be made of metal, and the compressor housing assembly 1013 is fitted to the cooler 1014. Based on this, the heat generated by the cooler 1014 can be quickly transferred to the compressor housing assembly 1013 and dissipated to the outside via the outer surface of the compressor housing assembly 1013. This facilitates heat dissipation by utilizing the thermal conductivity of the compressor housing assembly 1013 itself, thereby reducing the accumulation of heat on the outside of the cooler 1014.

[0101] It should be understood that the specific form of the heat dissipation structure 1013a is not limited in the embodiments of this application. As long as the heat transferred from the cooler 1014 can be dissipated to the outside, the embodiments of this application do not limit whether the heat dissipation structure 1013a is integrally formed by the compressor housing assembly 1013.

[0102] In some embodiments, see Figure 2 and combined Figure 3 The heat dissipation structure 1013a includes heat dissipation fins. The heat dissipation fins further improve the heat dissipation efficiency of the housing assembly.

[0103] In some embodiments, see Figure 2 and combined Figure 4 The compressor housing assembly 1013 has an opening 1013b that connects the compression chamber Q1 to the outside, and a portion of the cooler 1014 is located within the opening 1013b.

[0104] Specifically, an opening 1013b is formed on the compressor housing assembly 1013, connecting the internal space of the housing assembly with the external space, and a cooler 1014 is installed in the opening 1013b. With the above arrangement, the cooler 1014 can be disposed on the housing assembly via the opening 1013b and is positioned toward the corresponding working fluid flow area inside the compressor housing assembly 1013 to cool the working fluid inside the housing assembly.

[0105] For example, the cooler 1014 is disposed within the opening 1013b, meaning that the cooler 1014 is at least partially located within the space corresponding to the opening 1013b and is connected to the inner wall of the opening 1013b or a corresponding structure around the opening 1013b, thereby enabling the cooler 1014 to be stably mounted on the housing assembly. In this way, the side of the cooler 1014 facing the interior of the housing assembly can be arranged close to the corresponding area of ​​the compression chamber Q1 to facilitate heat exchange with the working fluid within the compression chamber Q1.

[0106] After the cooler 1014 is placed inside the opening 1013b, it can be installed using the opening 1013b structure of the housing assembly itself, thus facilitating the assembly of the cooler 1014 with the housing assembly. At the same time, placing the cooler 1014 inside the opening 1013b also helps to reduce the adverse impact of the cooler 1014 on the internal space of the housing assembly, and facilitates the placement of the cooler 1014 close to the corresponding area of ​​the compression chamber Q1 to cool the working fluid in the compression chamber Q1.

[0107] It should be understood that the embodiments of this application do not limit the specific shape and size of the opening 1013b, nor the specific installation method of the cooler 1014 within the opening 1013b. For example, the opening 1013b can be a circular opening 1013b, a strip opening 1013b, or other opening 1013b structures suitable for installing the cooler 1014, as long as it can accommodate the cooler 1014 and allow the cooler 1014 to be mounted on the housing assembly. The embodiments of this application do not limit this aspect.

[0108] In some embodiments, see Figure 1 The compressor housing assembly 1013 and / or the cooler 1014 are provided with a communication port 1013c, and the compression chamber Q1 is adapted to be connected to the expander 102 through the communication port 1013c; the cooler 1014 includes a connecting cable 1014a, and the communication port 1013c and the connecting cable 1014a are arranged circumferentially along the compression chamber Q1.

[0109] Specifically, the connecting port 1013c is used to connect the compression chamber Q1 and the expander 102, so that the working fluid in the compression chamber Q1 can be output to the expander 102 via the connecting port 1013c. For example, the connecting port 1013c can be located on the compressor housing assembly 1013 and connected to the compression chamber Q1; another example is that the connecting port 1013c can also be located on the cooler 1014 and connected to the compression chamber Q1; yet another example is that both the compressor housing assembly 1013 and the cooler 1014 can be provided with connecting ports 1013c to jointly form a communication path between the compression chamber Q1 and the expander 102. The specific location and structural form of the connecting port 1013c are not limited in this application embodiment, as long as the compression chamber Q1 can be connected to the expander 102 through the connecting port 1013c.

[0110] In some embodiments, see Figure 1 and combined Figure 5 The compressor housing assembly 1013 is provided with an air inlet 1013d, which is connected to the compression chamber Q1. The working fluid can enter the compression chamber Q1 through the air inlet 1013d.

[0111] Therefore, the operator can inflate the compression chamber Q1 through the air inlet 1013d.

[0112] In some implementations, please refer to Figure 2 and combined Figure 6 The cooler 1014 includes a connecting cable 1014a, which is used to connect to an external power supply structure and / or control structure to enable power supply and / or control of the cooler 1014. The connecting cable 1014a can be led out from the cooler 1014 toward the outside of the compressor housing assembly 1013, thereby facilitating the connection of the cooler 1014 to an external structure. The specific lead-out method of the connecting cable 1014a is not limited in this embodiment.

[0113] Please see Figure 1 , Figure 5 and Figure 6The connecting port 1013c and the connecting cable 1014a are arranged circumferentially around the compression chamber Q1, meaning they are both located in the corresponding areas around the compression chamber Q1. Since the compression chamber Q1 is located between the first compression piston 1011 and the second compression piston 1012, and both ends of the compression chamber Q1 are defined by the first compression piston 1011 and the second compression piston 1012 respectively, arranging the connecting port 1013c and the connecting cable 1014a circumferentially around the compression chamber Q1 avoids the corresponding movement space of the first compression piston 1011 and the second compression piston 1012, thus facilitating the adjustment of the volume of the compression chamber Q1 by the first compression piston 1011 and the second compression piston 1012. Simultaneously, the circumferential arrangement of the connecting port 1013c and the connecting cable 1014a around the compression chamber Q1 also helps reduce the mutual interference between the working fluid communication structure and the electrical connection structure of the cooler 1014, thereby improving the compactness and rationality of the overall structural layout of the compressor 101.

[0114] In some embodiments, see Figure 2 The compressor 101 also includes a first drive device 1016 and a second drive device 1017. The first drive device 1016 is connected to the first compression piston 1011 and is used to drive the first compression piston 1011 to move. The second drive device 1017 is connected to the second compression piston 1012 and is used to drive the second compression piston 1012 to move.

[0115] Specifically, the first drive device 1016 is driven by the first compression piston 1011 to drive the first compression piston 1011 to move within the compressor housing assembly 1013; the second drive device 1017 is driven by the second compression piston 1012 to drive the second compression piston 1012 to move within the compressor housing assembly 1013. In this way, the first compression piston 1011 and the second compression piston 1012 can move under the drive of their respective drive devices to change the volume of the compression chamber Q1 located between the first compression piston 1011 and the second compression piston 1012.

[0116] When the first driving device 1016 drives the first compression piston 1011 to move toward the second compression piston 1012, and / or the second driving device 1017 drives the second compression piston 1012 to move toward the first compression piston 1011, the volume of the compression chamber Q1 decreases, and the working fluid in the compression chamber Q1 is compressed. When the first driving device 1016 drives the first compression piston 1011 to move away from the second compression piston 1012, and / or the second driving device 1017 drives the second compression piston 1012 to move away from the first compression piston 1011, the volume of the compression chamber Q1 increases, thereby facilitating the inflow of the working fluid into the compression chamber Q1. Thus, the first driving device 1016 and the second driving device 1017 can respectively drive the first compression piston 1011 and the second compression piston 1012 to achieve the compression process of the working fluid in the compression chamber Q1.

[0117] The first driving device 1016 and the second driving device 1017 act on the first compression piston 1011 and the second compression piston 1012 respectively, thereby facilitating the control of the movement states of the first compression piston 1011 and the second compression piston 1012. It should be understood that the specific structural forms of the first driving device 1016 and the second driving device 1017 are not limited in this application embodiment, as long as the first driving device 1016 can drive the first compression piston 1011 to move, and the second driving device 1017 can drive the second compression piston 1012 to move. For example, the first driving device 1016 and the second driving device 1017 can be electromagnetic driving devices or mechanical driving devices; this application embodiment does not limit their application in this regard.

[0118] In some embodiments, see Figure 2 The first driving device 1016 includes a first electromagnetic coil and a first permanent magnet. The first permanent magnet is connected to the first compression piston 1011. The first electromagnetic coil is located on the periphery of the permanent magnet and is used to drive the first permanent magnet to move the first compression piston 1011.

[0119] Specifically, the first permanent magnet can be fixedly connected to the first compression piston 1011 so that the first permanent magnet can move synchronously with the first compression piston 1011. A first electromagnetic coil is disposed around the periphery of the first permanent magnet, thereby placing the first permanent magnet within the magnetic field area corresponding to the first electromagnetic coil. Thus, when the first electromagnetic coil is energized, it generates an electromagnetic force with the first permanent magnet, driving the first permanent magnet to move along the direction of movement of the first compression piston 1011, and the first permanent magnet then drives the first compression piston 1011 to move.

[0120] For example, the first electromagnetic coil can be located at a corresponding position on the compressor housing assembly 1013, and the first permanent magnet can be located on the side of the first compression piston 1011 near the first electromagnetic coil. In this way, the first compression piston 1011 can reciprocate under the combined action of the first electromagnetic coil and the first permanent magnet, thereby changing the volume of the compression chamber Q1. By adjusting the energizing state of the first electromagnetic coil, the motion state of the first permanent magnet can be adjusted, thereby achieving the driving and control of the movement of the first compression piston 1011.

[0121] It should be understood that the embodiments of this application do not limit the specific connection method and specific arrangement position of the first electromagnetic coil and the first permanent magnet, as long as the first electromagnetic coil can cooperate with the first permanent magnet to drive the first permanent magnet to move the first compression piston 1011. For example, the first permanent magnet can be directly connected to the first compression piston 1011, or it can be connected to the first compression piston 1011 through a connector. The embodiments of this application do not limit this.

[0122] In some embodiments, see Figure 2 The second driving device 1017 may include a second electromagnetic coil and a second permanent magnet. The second permanent magnet is connected to the second compression piston 1012. The second electromagnetic coil is located on the periphery of the permanent magnet and is used to drive the second permanent magnet to move the second compression piston 1012.

[0123] Specifically, the second permanent magnet can be fixedly connected to the second compression piston 1012 so that the second permanent magnet can move synchronously with the second compression piston 1012. A second electromagnetic coil is disposed around the periphery of the second permanent magnet, thereby placing the second permanent magnet within the magnetic field area corresponding to the second electromagnetic coil. Thus, when the second electromagnetic coil is energized, it generates an electromagnetic force with the second permanent magnet, driving the second permanent magnet to move along the direction of movement of the second compression piston 1012, and the second permanent magnet then drives the second compression piston 1012 to move.

[0124] For example, the second electromagnetic coil can be located at a corresponding position on the compressor housing assembly, and the second permanent magnet can be located on the side of the second compression piston 1012 near the second electromagnetic coil. In this way, the second compression piston 1012 can reciprocate under the combined action of the second electromagnetic coil and the second permanent magnet to change the volume of the compression chamber. By adjusting the energizing state of the second electromagnetic coil, the motion state of the second permanent magnet can be adjusted, thereby achieving the driving and control of the movement of the second compression piston 1012.

[0125] It should be understood that the embodiments of this application do not limit the specific connection method and specific arrangement position of the second electromagnetic coil and the second permanent magnet, as long as the second electromagnetic coil can cooperate with the second permanent magnet to drive the second permanent magnet to move the second compression piston 1012. For example, the second permanent magnet can be directly connected to the second compression piston 1012, or it can be connected to the second compression piston 1012 through a connector. The embodiments of this application do not limit this.

[0126] In some embodiments, see Figure 3 The compressor 101 also includes a temperature sensor 1015 and a controller. The temperature sensor 1015 is used to detect the temperature of the working fluid in the compression chamber Q1. The controller is connected to the temperature sensor 1015 and the cooler 1014 and is used to control and adjust the power of the cooler 1014 according to the working fluid temperature detected by the temperature sensor 1015.

[0127] Specifically, the temperature sensor 1015 can be located at a corresponding position in the compression chamber Q1 to detect the temperature of the working fluid inside the compression chamber Q1. For example, the temperature sensor 1015 can be located near the compression chamber Q1 or at a corresponding position in the cooler 1014, thereby facilitating the acquisition of the working fluid temperature information inside the compression chamber Q1. The controller is connected to the temperature sensor 1015 to receive the working fluid temperature information detected by the temperature sensor 1015. The controller is also connected to the cooler 1014 to adjust the operating power of the cooler 1014 according to the working fluid temperature information.

[0128] When compressor 101 is operating, the first compression piston 1011 and the second compression piston 1012 move to change the volume of compression chamber Q1 and compress the working fluid within it. During compression, the working fluid is prone to temperature rise. Temperature sensor 1015 can detect the temperature of the working fluid in compression chamber Q1 in real time or at intervals and send the detection result to the controller. The controller adjusts the power of cooler 1014 based on the working fluid temperature detected by temperature sensor 1015. For example, when temperature sensor 1015 detects an increase in the working fluid temperature in compression chamber Q1, the controller can control cooler 1014 to increase its power to enhance the cooling effect on the working fluid in compression chamber Q1. When temperature sensor 1015 detects a decrease in the working fluid temperature in compression chamber Q1, the controller can control cooler 1014 to decrease its power to maintain a working state that matches the working fluid temperature in compression chamber Q1. In this way, the cooler 1014 can be dynamically adjusted according to the temperature change of the working fluid in the compression chamber Q1, which helps to reduce the temperature rise of the working fluid during the compression process and helps to maintain the stability of the working fluid output temperature of the compressor 101.

[0129] It should be understood that the specific structure and location of the temperature sensor 1015 are not limited in this application embodiment, as long as it can detect the temperature of the working fluid in the compression chamber Q1. The specific control method of the controller is also not limited in this application embodiment, as long as it can adjust the power of the cooler 1014 according to the working fluid temperature detected by the temperature sensor 1015. For example, the controller can adjust the power of the cooler 1014 in stages according to a preset temperature threshold, or it can continuously adjust the power of the cooler 1014 according to changes in the working fluid temperature; this application embodiment does not limit the specific adjustments in either direction.

[0130] In some embodiments, see Figure 3 Cooler 1014 is a thermoelectric cooler, and the cold end of the thermoelectric cooler faces the compression chamber Q1.

[0131] When the thermoelectric cooler is powered on, it forms two ends with different temperatures on its two sides. The end with the lower temperature is the cold end, and the end with the higher temperature is the hot end. The cold end of the thermoelectric cooler faces the compression chamber Q1. This can be understood as the cold end of the thermoelectric cooler being positioned on the side corresponding to the compression chamber Q1, so that the cold end of the thermoelectric cooler is aligned with the working fluid inside the compression chamber Q1, thereby facilitating the cooling of the working fluid inside the compression chamber Q1 by the thermoelectric cooler.

[0132] With the cold end of the thermoelectric cooler facing the compression chamber Q1, the heat of the working fluid in the compression chamber Q1 can be transferred to the cold end of the thermoelectric cooler. When energized, the thermoelectric cooler absorbs the corresponding heat and transfers it from the cold end to the hot end. In other words, the cold end of the thermoelectric cooler forms the low-temperature side of the compression chamber Q1, while the hot end forms the high-temperature side opposite to the cold end. This allows the heat of the working fluid in the compression chamber Q1 to be transferred out from the cold end facing Q1, thereby lowering the temperature of the working fluid in the compression chamber Q1.

[0133] It should be noted that the cold end of the thermoelectric cooler can be directly positioned facing the working fluid in the compression chamber Q1. That is, the cold end of the thermoelectric cooler is arranged corresponding to the compression chamber Q1 so that the working fluid in the compression chamber Q1 can exchange heat with the cold end of the thermoelectric cooler. Alternatively, the cold end of the thermoelectric cooler can also indirectly face the compression chamber Q1 through a structure corresponding to it. In other words, as long as the cold end of the thermoelectric cooler is located on the side corresponding to the compression chamber Q1 and can cool the working fluid in the compression chamber Q1, it can be considered that the cold end of the thermoelectric cooler faces the compression chamber Q1. This application does not limit the specific relative arrangement between the cold end of the thermoelectric cooler and the compression chamber Q1.

[0134] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A compressor, characterized in that, Includes a compressor housing assembly, a cooler, a first compression piston, and a second compression piston; The first compression piston and the second compression piston are arranged opposite to each other and spaced apart, and a compression chamber is provided between the first compression piston and the second compression piston. The compression chamber is adapted to be connected to an expander. The compression chamber includes a first wall surface of the first compression piston facing the second compression piston, a second wall surface of the second compression piston facing the first compression piston, and a peripheral wall disposed between the first wall surface and the second wall surface. The cooler is disposed on the peripheral wall and is used to cool the working fluid in the compression chamber.

2. The compressor according to claim 1, characterized in that, The cooler is located inside the compressor housing assembly and conducts heat through the peripheral wall.

3. The compressor according to claim 1, characterized in that, The cooler is disposed on a portion of the wall of the compressor housing assembly facing the compression chamber, and the cooler forms at least a portion of the peripheral wall.

4. The compressor according to claim 3, characterized in that, The cooler is arranged around the compression chamber.

5. The compressor according to claim 4, characterized in that, The cooler is located between the first compression piston and the second compression piston.

6. The compressor according to claim 4, characterized in that, The first compression piston and the second compression piston move closer to or further away from each other along a first direction. When the first compression piston and the second compression piston are in the compression position, the dimension of the compression chamber in the first direction is a first distance. When the first compression piston and the second compression piston are in the expansion position, the dimension of the compression chamber in the first direction is a second distance. The first distance is less than the second distance. The diameter of the orifice formed by the cooler around the compression chamber is greater than or equal to the diameter of the first compression piston and / or the second compression piston, and the dimension of the cooler in the first direction is greater than or equal to the first distance.

7. The compressor according to claim 6, characterized in that, The dimension of the cooler in the first direction is less than or equal to the second distance.

8. The compressor according to claim 3, characterized in that, The surface of the compressor housing assembly facing away from the cooler has a heat dissipation structure.

9. The compressor according to claim 8, characterized in that, The heat dissipation structure includes heat dissipation fins.

10. The compressor according to claim 3, characterized in that, The compressor housing assembly has an opening connecting the compression chamber to the outside, and part of the cooler is located inside the opening.

11. The compressor according to claim 3, characterized in that, The cooler is a thermoelectric cooler, and the cold end of the thermoelectric cooler faces the compression chamber.

12. The compressor according to claim 1, characterized in that, The compressor housing assembly and / or the cooler are provided with a communication port, and the compression chamber is adapted to be connected to the expander through the communication port; The cooler includes connecting cables, and the communication port and the connecting cables are arranged circumferentially along the compression chamber.

13. The compressor according to any one of claims 1-12, characterized in that, It also includes a temperature sensor and a controller. The temperature sensor is used to detect the temperature of the working fluid in the compression chamber. The controller is connected to the temperature sensor and the cooler and is used to control and adjust the power of the cooler according to the working fluid temperature detected by the temperature sensor.

14. A refrigeration machine, characterized in that, It includes an expander and a compressor as described in any one of claims 1-13, wherein the compression chamber of the compressor is connected to the expander.

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