Compression equipment, electric appliance device and vehicle

Abstract

The utility model discloses compression equipment, an electric appliance device and a vehicle, and the compression equipment comprises an air cylinder; the piston assembly is installed in the air cylinder, a compression cavity is defined by the piston assembly and the air cylinder, and the piston assembly can move relative to the air cylinder; wherein a cooling cavity is formed in the air cylinder, the cooling cavity is located on the outer side of the compression cavity, and the air cylinder is provided with a cooling liquid inlet and a cooling liquid outlet which are communicated with the cooling cavity. According to the compression equipment, the piston assembly can move relative to the air cylinder so as to compress the air in the compression cavity, the compression function of the compression equipment is achieved, user requirements are met, meanwhile, cooling liquid can enter the cooling cavity through the cooling liquid inlet and flow in the cooling cavity so as to achieve heat exchange with the air cylinder, and the compression efficiency is improved. And the cooling liquid flows out from the cooling liquid outlet, so that one-way flowing of the cooling liquid can be realized, the efficiency of heat exchange with the air cylinder is improved, and the service life of the air cylinder is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of gas compression, in particular to a compression device, an electrical device having the compression device, and a vehicle having the electrical device. Background Art

[0002] The existing multi-stage gas compression device drives a piston member to reciprocate in a cylinder to perform secondary compression on gas. For this form of multi-stage gas compression device, due to the absence of a dedicated heat dissipation structure, the heat generated during gas compression will erode the cylinder. Long-term heat erosion will shorten the service life of the device, and there is room for improvement. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a compression device, which can realize the compression function of gas, meet the needs of users, and can cool the cylinder to extend the service life of the cylinder.

[0004] The compression device according to an embodiment of the utility model includes: a cylinder; a piston assembly, which is installed in the cylinder and defines a compression chamber with the cylinder, and the piston assembly is movable relative to the cylinder; wherein, a cooling chamber is formed in the cylinder, the cooling chamber is located outside the compression chamber, and the cylinder is provided with a coolant inlet and a coolant outlet communicated with the cooling chamber.

[0005] The compression device according to an embodiment of the utility model compresses the gas in the compression chamber by making the piston assembly movable relative to the cylinder, realizes the compression function of the compression device, meets the needs of users, and at the same time, the coolant can enter the cooling chamber from the coolant inlet, flow in the cooling chamber to exchange heat with the cylinder, cool the cylinder, and then flow out from the coolant outlet, so as to realize the one-way flow of the coolant, improve the heat exchange efficiency with the cylinder, and extend the service life of the cylinder.

[0006] The compression device according to some embodiments of the utility model, the cooling chamber includes a plurality of cooling sub-chambers, and the plurality of cooling sub-chambers are distributed around the compression chamber.

[0007] The compression device according to some embodiments of the utility model, the cooling chamber further includes an over-flow gap, the over-flow gap is located at the end of the compression chamber, and at least two of the cooling sub-chambers are communicated through the over-flow gap.

[0008] According to the compression device of some embodiments of the present utility model, a plurality of the cooling sub-chambers are sequentially communicated in the circumferential direction of the compression chamber, and one of two adjacent cooling sub-chambers among the plurality of cooling sub-chambers is communicated with the coolant inlet and the other is communicated with the coolant outlet.

[0009] According to the compression device of some embodiments of the present utility model, a plurality of the cooling sub-chambers are distributed in two groups, the cylinder is further provided with a partition plate, the two groups of cooling sub-chambers are respectively located on both sides of the partition plate, and each group of cooling sub-chambers is a plurality; the cooling chamber further includes a first flow-through gap at one end of the compression chamber and a second flow-through gap at the other end of the compression chamber, and the plurality of cooling sub-chambers in each group are communicated through the first flow-through gap, and the cooling sub-chambers of the two groups are communicated through the second flow-through gap.

[0010] According to the compression device of some embodiments of the present utility model, the first flow-through gap and the second flow-through gap are respectively located at two ends of the cylinder, and both the coolant inlet and the coolant outlet are located at the same end of the cylinder as the first flow-through gap or the second flow-through gap.

[0011] According to the compression device of some embodiments of the present utility model, the number of the cooling sub-chambers is four; wherein, the four cooling sub-chambers are sequentially communicated in the circumferential direction of the compression chamber, or the four cooling sub-chambers are diagonally communicated outside the compression chamber and two adjacent cooling sub-chambers among them are communicated.

[0012] According to the compression device of some embodiments of the present utility model, a partition plate is provided between at least two adjacent cooling sub-chambers, and the partition plate is formed with a communication hole for communicating the two adjacent cooling sub-chambers.

[0013] According to the compression device of some embodiments of the present utility model, the piston assembly includes a first piston and a second piston, and the compression chamber includes a first compression chamber between the first piston and the cylinder and a second compression chamber between the second piston and the cylinder.

[0014] The present utility model also proposes an electrical device.

[0015] According to the electrical device of the embodiment of the present utility model, the compression device described in any one of the above is provided.

[0016] The present utility model also proposes a vehicle, including the electrical device described above.

[0017] The advantages of the vehicle, the electrical device and the above-mentioned compression device over the prior art are the same, and will not be elaborated here.

[0018] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Brief Description of the Drawings

[0019] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic structural view of a compression device according to an embodiment of the present utility model Figure 1 ;

[0021] Figure 2 is a schematic structural view of a compression device according to an embodiment of the present utility model Figure 2 ;

[0022] Figure 3 is a schematic principle diagram of a compression device according to an embodiment of the present utility model.

[0023] Reference Signs:

[0024] Compression device 100,

[0025] Cylinder 1, cooling chamber 11, cooling sub-chamber 111, first flow-through gap 113, coolant inlet 12, coolant outlet 13, piston assembly 2, first piston 21, second piston 22, compression chamber 3, first compression chamber 31, second compression chamber 32, partition plate 4, check valve 5, intake pipe 6, upper end cover 7, lower end cover 8, temperature sensor 9. Detailed Description of the Embodiments

[0026] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the features defined with "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] The following refers to Figures 1 - 3 Describe the compression device 100 according to an embodiment of the present utility model. By making the piston assembly 2 movable relative to the cylinder 1 to compress the gas in the compression chamber 3, the compression function of the compression device 100 is realized to meet the user's needs. At the same time, by making the coolant enter the cooling chamber 11 from the coolant inlet 12, flow in the cooling chamber 11 to exchange heat with the cylinder 1, cool down the cylinder 1, and then flow out from the coolant outlet 13, the one-way flow of the coolant can be realized, the heat exchange efficiency with the cylinder 1 can be improved, and the service life of the cylinder 1 can be prolonged.

[0030] As Figure 1 shown, a compression device 100 according to an embodiment of the present utility model includes: a cylinder 1 and a piston assembly 2.

[0031] The piston assembly 2 is installed in the cylinder 1 and defines a compression chamber 3 with the cylinder 1, and the piston assembly 2 is movable relative to the cylinder 1.

[0032] Specifically, the cylinder 1 serves as the main body part of the compression device 100, providing an installation position and installation space for the components within the compression device 100 to facilitate the installation of the components within the compression device 100. By disposing the piston assembly 2 within the cylinder 1, the installation of the piston assembly 2 can be achieved, ensuring that the piston assembly 2 can operate stably within the cylinder 1, and enabling the piston assembly 2 and the cylinder 1 to jointly define a compression chamber 3. The compression chamber 3 is used to provide a compression space for the gas, enabling the gas to be compressed within the compression chamber 3. Moreover, the piston assembly 2 is movable relative to the cylinder 1, i.e., the piston assembly 2 can move relative to the cylinder 1 within the cylinder 1 to compress the gas during the movement process, realizing the compression function of the compression device 100 and meeting the user's requirements.

[0033] Among them, a cooling chamber 11 is formed within the cylinder 1. The cooling chamber 11 is located outside the compression chamber 3, and the cylinder 1 is provided with a coolant inlet 12 and a coolant outlet 13 that communicate with the cooling chamber 11.

[0034] Specifically, heat is generated during the compression of the gas, and the heat is transferred to the cylinder 1, causing the temperature of the cylinder 1 to rise. If the temperature is not lowered in a timely manner, the cylinder 1 will be damaged under the long-term heat erosion, reducing the service life of the cylinder 1. Therefore, a cooling chamber 11 is formed within the cylinder 1. The cooling chamber 11 is used to accommodate the coolant, allowing the coolant to flow inside it to exchange heat with the cylinder 1 and cool down the cylinder 1, effectively reducing the impact of heat on the cylinder 1 and extending the service life of the cylinder 1. Among them, the coolant can be water.

[0035] At the same time, by disposing the cooling chamber 11 outside the compression chamber 3, the cooling chamber 11 and the compression chamber 3 can be spaced apart to avoid interference between the coolant in the cooling chamber 11 and the gas in the compression chamber 3, ensuring the reliability of the operation within the cooling chamber 11 and the compression chamber 3. Moreover, the cooling chamber 11 can form a sound insulation layer outside the compression chamber 3, effectively reducing the transmission of the sound generated during the movement of the piston assembly 2 outward, thereby significantly reducing the operating noise of the compression device 100.

[0036] In addition, a coolant inlet 12 and a coolant outlet 13 are provided on the cylinder 1. The coolant inlet 12 is used to allow the coolant to enter the cylinder 1 through this opening to exchange heat with the cylinder 1. The coolant outlet 13 is used to allow the coolant that has exchanged heat with the cylinder 1 within the cylinder 1 to flow out through this opening, taking away the heat from the cylinder 1. Both the coolant inlet 12 and the coolant outlet 13 are connected to the cooling chamber 11, enabling the coolant to enter the cooling chamber 11 from the coolant inlet 12, flow within the cooling chamber 11 to exchange heat with the cylinder 1, and then flow out from the coolant outlet 13, thereby realizing the one-way flow of the coolant and improving the efficiency of heat exchange with the cylinder 1.

[0037] It should be noted that in actual use, the coolant can also enter the cooling chamber 11 from the coolant outlet 13 according to the actual situation, and then the coolant in the cooling chamber 11 can flow out from the coolant inlet 12, that is, the functions of the coolant inlet 12 and the coolant outlet 13 can be interchanged, improving the flexibility of the setting.

[0038] Thus, by providing the cylinder 1 to provide an installation position and space for the components in the compression device 100, and a piston assembly 2 is provided in the cylinder 1, the cylinder 1 and the piston assembly 2 jointly define a compression chamber 3. The gas in the compression chamber 3 is compressed by the movement of the piston assembly 2 relative to the cylinder 1. At the same time, a cooling chamber 11 is formed in the cylinder 1, so that the coolant can flow inside it to exchange heat with the cylinder 1. And the cooling chamber 11 is arranged outside the compression chamber 3, which can ensure the reliability of gas compression in the compression chamber 3, and can reduce the transmission of the movement noise of the piston assembly 2 outward. In addition, a coolant inlet 12 and a coolant outlet 13 are provided on the cylinder 1, and the coolant inlet 12 and the coolant outlet 13 are respectively communicated with the cooling chamber 11, which can realize the one-way flow of the coolant and improve the heat exchange efficiency.

[0039] According to the compression device 100 of the embodiment of the present invention, the compression function of the compression device 100 is realized by making the piston assembly 2 movable relative to the cylinder 1 to compress the gas in the compression chamber 3, meeting the user's needs. At the same time, by making the coolant enter the cooling chamber 11 from the coolant inlet 12, flow in the cooling chamber 11 to exchange heat with the cylinder 1, cool down the cylinder 1, and then flow out from the coolant outlet 13, the one-way flow of the coolant can be realized, improving the heat exchange efficiency with the cylinder 1 and prolonging the service life of the cylinder 1.

[0040] In some embodiments, the cooling chamber 11 includes a plurality of cooling sub-chambers 111, and the plurality of cooling sub-chambers 111 are distributed around the compression chamber 3.

[0041] Specifically, the cooling chamber 11 is used to allow the coolant to flow inside it to exchange heat with the cylinder 1. By making the cooling chamber 11 include a plurality of cooling sub-chambers 111, that is, the coolant can flow in the plurality of cooling sub-chambers 111 at the same time to exchange heat with the cylinder 1 and cool down the cylinder 1. And by distributing the plurality of cooling sub-chambers 111 around the compression chamber 3, that is, each of the plurality of cooling sub-chambers 111 can exchange heat with the cylinder 1 outside the compression chamber 3, and the sound of the movement of the piston assembly 2 can be reduced from being transmitted outward through the plurality of cooling sub-chambers 111 together, effectively reducing the operating noise of the compression device 100.

[0042] In some embodiments, the cooling chamber 11 further includes an over-flow gap, the over-flow gap is located at the end of the compression chamber 3, and at least two cooling sub-chambers 111 are communicated through the over-flow gap.

[0043] Specifically, the cooling cavity 11 includes a plurality of cooling sub-cavities 111. The extending direction of the cooling sub-cavities 111 is the same as that of the cylinder 1. An overflow gap is provided in the cooling cavity 11, and the cooling sub-cavities 111 can be connected through the overflow gap, so that the coolant can flow between the interconnected cooling sub-cavities 111. The overflow gap is arranged at the end of the compression cavity 3, so that the coolant can flow from one end in the cooling sub-cavity 111 to the other end and then enter the connected cooling sub-cavity 111, which can ensure the reliability of heat exchange between the coolant flowing in the cooling sub-cavity 111 and the cylinder 1. Moreover, at least two cooling sub-cavities 111 are connected through the overflow gap, that is, two, three or more cooling sub-cavities 111 can be connected through the overflow gap, and then the coolant can flow between two, three or more interconnected cooling sub-cavities 111 to take away the heat of the cylinder 1 during the flowing process, realizing the cooling function of the cylinder 1.

[0044] In some embodiments, the plurality of cooling sub-cavities 111 are sequentially connected in the circumferential direction of the compression cavity 3, and one of the adjacent two cooling sub-cavities 111 among the plurality of cooling sub-cavities 111 is connected to the coolant inlet 12 and the other is connected to the coolant outlet 13.

[0045] Specifically, the plurality of cooling sub-cavities 111 are distributed around the compression cavity 3, so that the coolant can flow in the plurality of cooling sub-cavities 111 to exchange heat with the cylinder 1. And the plurality of cooling sub-cavities 111 are sequentially connected in the circumferential direction of the compression cavity 3, that is, the plurality of cooling sub-cavities 111 distributed around the compression cavity 3 can be sequentially connected, so that the coolant can flow sequentially in the plurality of cooling sub-cavities 111, and the one-way flow of the coolant can be realized, improving the heat exchange efficiency with the cylinder 1.

[0046] At the same time, one of the adjacent two cooling sub-cavities 111 among the plurality of cooling sub-cavities 111 is connected to the coolant inlet 12, and the other is connected to the coolant outlet 13, so that the coolant inlet 12 and the coolant outlet 13 can be respectively connected to two cooling sub-cavities 111 to prevent the coolant from failing to exchange heat with the cylinder 1, and the two cooling sub-cavities 111 respectively connected to the coolant inlet 12 and the coolant outlet 13 are not directly connected. Then the coolant can first enter the cooling sub-cavity 111 connected to the coolant inlet 12, and then flow through each cooling sub-cavity 111 in turn until it flows to the cooling sub-cavity 111 connected to the coolant outlet 13 and finally flows out from the coolant outlet 13. Thus, the one-way flow of the coolant can be realized, the heat exchange efficiency can be improved, and the setting quantity of the coolant inlet 12 and the coolant outlet 13 can be reduced, lowering the setting cost.

[0047] In some embodiments, the multiple cooling sub-chambers 111 are distributed in two groups. The cylinder 1 is further provided with a partition plate 4. The two groups of cooling sub-chambers 111 are respectively located on both sides of the partition plate 4, and each group of cooling sub-chambers 111 has multiple ones; the cooling chamber 11 further includes a first flow-through gap 113 at one end of the compression chamber 3 and a second flow-through gap at the other end of the compression chamber 3. The multiple cooling sub-chambers 111 in each group are connected through the first flow-through gap 113, and the cooling sub-chambers 111 of the two groups are connected through the second flow-through gap.

[0048] Specifically, as Figure 2 shown, the cooling chamber 11 includes multiple cooling sub-chambers 111. The multiple cooling sub-chambers 111 can be separated into two groups by the partition plate 4, so that the two groups of cooling sub-chambers 111 can be respectively located on both sides of the partition plate 4, and each group of cooling sub-chambers 111 includes multiple cooling sub-chambers 111.

[0049] At the same time, a first flow-through gap 113 and a second flow-through gap are provided in the cooling chamber 11. Both the first flow-through gap 113 and the second flow-through gap can be used to connect at least two cooling sub-chambers 111, so that the coolant can flow between the connected cooling sub-chambers 111 through the first flow-through gap 113 or the second flow-through gap to exchange heat with the cylinder 1. And by respectively arranging the first flow-through gap 113 and the second flow-through gap at both ends of the compression chamber 3, it can be avoided that interference occurs between the first flow-through gap 113 and the second flow-through gap, resulting in the inability to achieve the one-way flow of the coolant.

[0050] Moreover, the multiple cooling sub-chambers 111 in each group are connected through the first flow-through gap 113, so that the coolant can flow between the multiple cooling sub-chambers 111 in each group through the first flow-through gap 113. The cooling sub-chambers 111 of the two groups are connected through the second flow-through gap, so that the coolant can flow between the two groups of cooling sub-chambers 111 through the second flow-through gap. Thus, the coolant can flow between the multiple cooling sub-chambers 111 through the first flow-through gap 113 and the second flow-through gap to achieve the one-way flow of the coolant and improve the efficiency of heat exchange with the cylinder 1.

[0051] That is to say, the coolant can enter one of the cooling sub-chambers 111 from the coolant inlet 12, flow sequentially through the multiple cooling sub-chambers 111 in the same group through the first flow-through gap 113, then flow through the second flow-through gap to the other group of cooling sub-chambers 111, flow sequentially through the multiple cooling sub-chambers 111 in the other group through the first flow-through gap 113, until it flows to the cooling sub-chamber 111 connected to the coolant outlet 13, and finally flows out from the coolant outlet 13. Thus, the one-way flow of the coolant can be achieved and the heat exchange efficiency can be improved.

[0052] In some embodiments, the first overflow gap 113 and the second overflow gap are respectively located at two ends of the cylinder 1, and both the coolant inlet 12 and the coolant outlet 13 are located at the same end of the cylinder 1 as the first overflow gap 113 or the second overflow gap.

[0053] Specifically, as Figure 3 shown, by respectively arranging the first overflow gap 113 and the second overflow gap at two ends of the cylinder 1, interference between the first overflow gap 113 and the second overflow gap can be avoided, which may cause the coolant to be unable to exchange heat with the cylinder 1 or reduce the heat exchange efficiency. At the same time, the coolant inlet 12 and the coolant outlet 13 can both be arranged on the same side of the cylinder 1 as the first overflow gap 113, or the coolant inlet 12 and the coolant outlet 13 can both be arranged on the same side of the cylinder 1 as the second overflow gap, so as to ensure that the coolant can flow through each cooling sub-chamber, and the one-way flow of the coolant can be realized through the reasonable arrangement of the first overflow gap 113, the second overflow gap, the coolant inlet 12 and the coolant outlet 13, ensuring that the coolant can flow through each cooling sub-chamber 111 in sequence and exchange heat with the cylinder 1, thereby improving the heat exchange efficiency.

[0054] In some embodiments, there are four cooling sub-chambers 111; among them, the four cooling sub-chambers 111 are sequentially communicated along the circumferential direction of the compression chamber 3, or the four cooling sub-chambers 111 are diagonally communicated outside the compression chamber 3 and two adjacent cooling sub-chambers 111 among them are communicated.

[0055] Specifically, the cooling chamber 11 includes four cooling sub-chambers 111, that is, heat exchange with the cylinder 1 can be realized through the four cooling sub-chambers 111 at the same time. The four cooling sub-chambers 111 are distributed around the compression chamber 3, so that the coolant can flow in the four cooling sub-chambers 111 to exchange heat with the cylinder 1, and the four cooling sub-chambers 111 are sequentially communicated in the circumferential direction of the compression chamber 3, that is, the four cooling sub-chambers 111 distributed around the compression chamber 3 can be sequentially communicated, so that the coolant can flow sequentially in the four cooling sub-chambers 111, and the one-way flow of the coolant can be realized, improving the efficiency of heat exchange with the cylinder 1.

[0056] Or, the four cooling sub-chambers 111 are diagonally communicated outside the compression chamber 3, and two adjacent cooling sub-chambers 111 among them are communicated. First, the two adjacent cooling sub-chambers 111 in each group of cooling sub-chambers 111 are communicated, and then the two cooling sub-chambers 111 located at the diagonal positions in the two groups of cooling sub-chambers 111 are communicated, so as to realize the communication between the two groups of cooling sub-chambers 111, and further the four cooling sub-chambers 111 can be sequentially communicated, so that the coolant can flow sequentially in the four cooling sub-chambers 111, realizing the one-way flow of the coolant and improving the heat exchange efficiency.

[0057] In addition, it should be noted that in actual design, the connection sequence between the four cooling sub-chambers 111 can be flexibly set according to specific requirements and actual situations, and the number of cooling sub-chambers 111 can also be flexibly set according to specific situations.

[0058] In some embodiments, a partition plate 4 is provided between at least two adjacent cooling sub-chambers 111, and the partition plate 4 is formed with a communication hole for communicating two adjacent cooling sub-chambers 111.

[0059] Specifically, the partition plate 4 is used to separate two adjacent cooling sub-chambers 111. By providing the partition plate 4 between at least two adjacent cooling sub-chambers 111, the number of partition plates 4 can be increased to separate two, three or four adjacent cooling sub-chambers 111, so as to improve the flow efficiency of the coolant. And a communication hole is provided on the partition plate 4, so that two, three or four adjacent cooling sub-chambers 111 can be sequentially communicated through the communication hole, enabling the coolant to flow between two, three or four adjacent cooling sub-chambers 111, and further enabling the coolant to flow sequentially between two, three or four adjacent cooling sub-chambers 111 to achieve the one-way flow of the coolant.

[0060] In some embodiments, the piston assembly 2 includes a first piston 21 and a second piston 22, and the compression chamber 3 includes a first compression chamber 31 located between the first piston 21 and the cylinder 1 and a second compression chamber 32 located between the second piston 22 and the cylinder 1.

[0061] Specifically, the piston assembly 2 is used to compress the gas in the compression chamber 3 during the process of moving relative to the cylinder 1, so that the piston assembly 2 includes the first piston 21 and the second piston 22, that is, both the first piston 21 and the second piston 22 can be used to compress the gas. At the same time, the compression chamber 3 includes the first compression chamber 31 and the second compression chamber 32, that is, both the first compression chamber 31 and the second compression chamber 32 can be used to accommodate the gas and enable the gas to be compressed inside. And since the first compression chamber 31 is located between the first piston 21 and the cylinder 1, the gas in the first compression chamber 31 can be compressed by the first piston 21. Since the second compression chamber 32 is located between the second piston 22 and the cylinder 1, the gas in the second compression chamber 32 can be compressed by the second piston 22. And the first piston 21 and the second piston 22 can correspond to the first compression chamber 31 and the second compression chamber 32 respectively, improving the reliability of compressing the gas.

[0062] Among them, it should be noted that the gas in the first compression chamber 31 and the second compression chamber 32 can be compressed by the first piston 21 and the second piston 22 respectively. The first compression chamber 31 and the second compression chamber 32 can also be connected through a connecting pipeline, and the first compression chamber 31 and the second compression chamber 32 can be made to conduct unidirectionally through the connecting pipeline, so that the gas can be first compressed at the first stage in the first compression chamber 31, then flow through the connecting pipeline to the second compression chamber 32, and be compressed at the second stage in the second compression chamber 32, or be first compressed at the first stage in the second compression chamber 32, then flow through the connecting pipeline to the first compression chamber 31, and be compressed at the second stage in the first compression chamber 31. Thus, the two-stage compression of the gas can be achieved, and the reduction of the compression efficiency caused by the gas backflow can be avoided, that is, the efficiency of the compression device 100 can be improved.

[0063] Moreover, it should be noted that when the gas is compressed in two stages, a check valve 5 can also be provided in the compression device 100 to control the flow direction of the gas through the check valve 5, ensure the accuracy of the gas flow direction, and prevent the gas backflow and the mixing of gases with different pressures.

[0064] In addition, it should be noted that as Figure 1 shown, an intake pipe 6 is also provided in the compression device 100. The intake pipe 6 is used to allow the gas to enter the compression chamber 3 therefrom, facilitating the compression of the gas in the compression chamber 3. Upper end covers 7 and lower end covers 8 are respectively provided at both ends of the cylinder 1. The cylinder 1 can be sealed by the upper end cover 7 and the lower end cover 8. At the same time, a temperature sensor 9 is also provided in the compression device 100. The temperature of the cylinder 1 can be monitored through the temperature sensor 9 to determine the cooling effect and the flow rate of the coolant.

[0065] The present utility model also proposes an electrical device.

[0066] The electrical device according to the embodiment of the present utility model is provided with the compression device 100 described in any one of the above. That is, the compression device 100 in the present application can be applied to electrical devices such as air conditioners, refrigerators, freezers, and vehicle air conditioning systems. By making the piston assembly 2 movable relative to the cylinder 1 to compress the gas in the compression chamber 3, the compression function of the compression device 100 is realized to meet the user's needs. At the same time, by allowing the coolant to enter the cooling chamber 11 from the coolant inlet 12, flow in the cooling chamber 11 to exchange heat with the cylinder 1, cool the cylinder 1, and then flow out from the coolant outlet 13, the unidirectional flow of the coolant can be realized, the heat exchange efficiency with the cylinder 1 can be improved, and the service life of the cylinder 1 can be extended.

[0067] The present utility model also proposes a vehicle, including the above-mentioned electrical device. By providing this electrical device, the heat exchange efficiency between the coolant and the cylinder 1 can be improved, and the service life of the cylinder 1 can be extended.

[0068] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0069] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A compression device, characterized in that: include: Cylinder (1); A piston assembly (2), the piston assembly (2) being installed in the cylinder (1) and defining a compression chamber (3) with the cylinder (1), and the piston assembly (2) being movable relative to the cylinder (1); A cooling chamber (11) is formed in the cylinder (1), the cooling chamber (11) is located outside the compression chamber (3), and the cylinder (1) is provided with a cooling liquid inlet (12) and a cooling liquid outlet (13) which are connected to the cooling chamber (11).

2. The compression device according to claim 1, characterized in that The cooling chamber (11) comprises a plurality of cooling sub-chambers (111), and the plurality of cooling sub-chambers (111) are distributed around the compression chamber (3).

3. The compression device according to claim 2, characterized in that The cooling chamber (11) further comprises a flow gap, wherein the flow gap is located at the end of the compression chamber (3), and at least two cooling sub-chambers (111) are connected via the flow gap.

4. The compression device according to claim 2, characterized in that The plurality of cooling sub-cavities (111) are connected in sequence in the circumferential direction of the compression cavity (3), and one of two adjacent cooling sub-cavities (111) among the plurality of cooling sub-cavities (111) is connected to the cooling liquid inlet (12) and the other is connected to the cooling liquid outlet (13).

5. The compression device according to claim 2, characterized in that The plurality of cooling sub-cavities (111) are distributed in two groups, the cylinder (1) is further provided with a partition plate (4), the two groups of cooling sub-cavities (111) are respectively located on both sides of the partition plate (4), and each group of cooling sub-cavities (111) has a plurality of cooling sub-cavities (111); The cooling chamber (11) further comprises a first flow gap (113) located at one end of the compression chamber (3) and a second flow gap located at the other end of the compression chamber (3); the plurality of cooling sub-chambers (111) in each group are connected via the first flow gap (113), and the two groups of cooling sub-chambers (111) are connected via the second flow gap.

6. The compression device according to claim 5, characterized in that The first flow gap (113) and the second flow gap are respectively located at two ends of the cylinder (1), and the coolant inlet (12) and the coolant outlet (13) are both located at the same end of the cylinder (1) as the first flow gap (113) or the second flow gap.

7. The compression device according to claim 2, characterized in that There are four cooling sub-cavities (111); The four cooling sub-cavities (111) are connected in sequence along the circumferential direction of the compression cavity (3), or the four cooling sub-cavities (111) are connected diagonally on the outside of the compression cavity (3) and two adjacent cooling sub-cavities (111) are connected.

8. The compression device according to claim 2, characterized in that A partition plate (4) is provided between at least two adjacent cooling sub-cavities (111), and the partition plate (4) is formed with a communication hole, and the communication hole is used to connect the two adjacent cooling sub-cavities (111).

9. The compression device according to any one of claims 1 to 8, characterized in that The piston assembly (2) comprises a first piston (21) and a second piston (22), and the compression chamber (3) comprises a first compression chamber (31) located between the first piston (21) and the cylinder (1) and a second compression chamber (32) located between the second piston (22) and the cylinder (1).

10. An electrical device, characterized in that: A compression device according to any one of claims 1 to 9 is provided.

11. A vehicle, characterized in that: The electrical device comprising the electrical device as claimed in claim 10.

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