Pressure vessels, compressors, air conditioning equipment and vehicles

Abstract

The present application provides a pressure vessel, a compressor, an air-conditioning device and a vehicle, the pressure vessel comprising: a high-pressure shell, a low-pressure shell and a partition plate, the partition plate being arranged between the high-pressure shell and the low-pressure shell, the high-pressure shell and the partition plate enclosing a high-pressure chamber, the low-pressure shell and the partition plate enclosing a low-pressure chamber, a sealing structure being arranged between the high-pressure shell and the partition plate, a through hole being arranged on the partition plate, the through hole being connected to the low-pressure chamber, the sealing structure comprising a high-pressure sealing structure and a low-pressure sealing structure. The pressure vessel provided by the present application has a through hole in communication with the low-pressure chamber on the partition plate, which can reduce the pressure between the high-pressure sealing structure and the low-pressure sealing structure, thereby significantly reducing the sealing pressure difference between the high-pressure shell and the outside world and improving the sealing performance; if the fluid in the high-pressure chamber can penetrate the high-pressure sealing structure, it can flow to the low-pressure chamber through the through hole, which can effectively avoid the problem of leakage to the outside world caused by excessive pressure on the high-pressure side.

Description

Technical Field

[0001] The present application belongs to the technical field of air conditioning equipment, and more specifically, relates to a pressure vessel, a compressor, an air conditioning device and a vehicle. Background Art

[0002] The compressor used in air conditioners generally has a high-pressure chamber and a low-pressure chamber inside its shell. A partition plate is usually provided between the high-pressure chamber and the low-pressure chamber. The high-pressure chamber and the partition plate are generally sealed from the outside world by seals. When the pressure in the high-pressure chamber is high, the sealing pressure difference between the high-pressure chamber and the outside world is large. The seal is prone to deformation under high-pressure conditions, and a gap is easily formed between the high-pressure chamber and the partition plate. The high-pressure fluid in the high-pressure chamber is easy to flow to the outside world through the gap, causing leakage. The leaked fluid will cause damage to the external environment. At the same time, leakage may cause the air-conditioning system to lose its function. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a pressure vessel, a compressor, an air-conditioning device and a vehicle to solve the technical problem in the prior art that when the pressure in the high-pressure chamber of the shell is high, the sealing pressure difference between the high-pressure chamber and the outside world is large, and the high-pressure fluid in the high-pressure chamber is easy to flow to the outside world through the gap between the high-pressure chamber and the partition plate, causing leakage.

[0004] To achieve the above-mentioned purpose, the technical solution adopted in this application is: to provide a pressure vessel, including: a high-pressure shell, a low-pressure shell, a partition plate and a sealing structure, the partition plate is arranged between the high-pressure shell and the low-pressure shell, the high-pressure shell and the partition plate enclose a high-pressure chamber, the low-pressure shell and the partition plate enclose a low-pressure chamber, a sealing structure is provided between the high-pressure shell and the partition plate, wherein a through hole is opened on the partition plate, the through hole is connected to the low-pressure chamber, the sealing structure includes a high-pressure sealing structure and a low-pressure sealing structure, the low-pressure sealing structure is located on the outside of the high-pressure sealing structure, and the through hole is located between the high-pressure sealing structure and the low-pressure sealing structure.

[0005] In one embodiment, the sealing structure includes a first sealing gasket, an inner portion of the first sealing gasket forms the high-pressure sealing structure, and an outer portion of the first sealing gasket forms the low-pressure sealing structure.

[0006] In one embodiment, a through hole is formed in the first sealing gasket.

[0007] In one embodiment, the through hole is connected to the through hole, and the position of the through hole is arranged opposite to the position of the through hole, or the through hole and the through hole are staggered.

[0008] In one embodiment, the sealing structure includes an inner sealing gasket and an outer sealing gasket, the inner sealing gasket forms the high-pressure sealing structure, and the outer sealing gasket forms the low-pressure sealing structure.

[0009] In one embodiment, the sealing structure includes a first sealing ring and a second sealing ring, the first sealing ring forms the high-pressure sealing structure, and the second sealing ring forms the low-pressure sealing structure.

[0010] In one embodiment, the high-pressure shell has a first end face, the partition plate has a second end face opposite to the first end face, at least one of the first end face and the second end face is provided with a first annular groove and a second annular groove, the first sealing ring is installed in the first annular groove and clamped between the high-pressure shell and the partition plate, and the second sealing ring is installed in the second annular groove and clamped between the high-pressure shell and the partition plate.

[0011] In one embodiment, the sealing structure includes an inner sealing ring and an outer sealing gasket, the inner sealing ring forms the high-pressure sealing structure, and the outer sealing gasket forms the low-pressure sealing structure.

[0012] In one embodiment, a communication ring is provided on the high-pressure housing, and the communication ring is arranged opposite to the sealing structure, and / or a communication ring is provided on the partition plate, and the communication ring is arranged opposite to the sealing structure.

[0013] The beneficial effect of the pressure vessel provided by the present application is that: compared with the prior art, the pressure vessel proposed in the present application has a through hole connected to the low-pressure chamber on the partition plate, so that the pressure between the high-pressure sealing structure and the low-pressure sealing structure can be reduced, so that the sealing pressure difference between the high-pressure shell and the outside world is greatly reduced, and the sealing performance is improved; at the same time, if the fluid in the high-pressure chamber can penetrate the high-pressure sealing structure, it can flow to the low-pressure chamber through the through hole, which can effectively avoid leakage to the outside world, avoid damage to the environment and loss of pressure vessel function.

[0014] Another object of the present application is to provide a compressor comprising the above-mentioned pressure vessel.

[0015] The beneficial effect of the compressor provided by the present application is that, compared with the prior art, the compressor proposed in the present application, by providing the above-mentioned pressure vessel, can greatly reduce the sealing pressure difference between the high-pressure shell and the outside world, and the sealing performance of the compressor is improved; at the same time, if the fluid in the high-pressure chamber can penetrate the high-pressure sealing structure, it can flow to the low-pressure chamber through the through hole, which can effectively avoid leakage to the outside world, avoid damage to the environment and loss of compressor function.

[0016] Another object of the present application is to provide an air-conditioning device comprising the above-mentioned compressor.

[0017] The beneficial effect of the air-conditioning equipment provided by the present application is that, compared with the prior art, the air-conditioning equipment proposed in the present application can ensure the sealing performance of the compressor by setting the above-mentioned compressor. If the fluid in the high-pressure chamber can penetrate the high-pressure sealing structure, it can flow to the low-pressure chamber through the through hole, which can reduce the pressure between the high-pressure sealing structure and the low-pressure sealing structure, and can effectively avoid leakage to the outside world.

[0018] Another object of the present application is to provide a vehicle comprising the above-mentioned air-conditioning device.

[0019] The beneficial effect of the vehicle provided by the present application is that, compared with the prior art, the vehicle proposed in the present application, by providing the above-mentioned air-conditioning equipment, can ensure the sealing performance of the compressor. If the fluid in the high-pressure chamber can penetrate the high-pressure sealing structure, it can flow to the low-pressure chamber through the through hole, which can reduce the pressure between the high-pressure sealing structure and the low-pressure sealing structure, and can effectively avoid leakage to the outside world. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A cross-sectional view of a pressure vessel provided in one embodiment of the present application;

[0022] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle;

[0023] Figure 3 for Figure 1 A schematic diagram of the structure of a partition plate in the pressure vessel shown;

[0024] Figure 4 for Figure 3 A magnified schematic diagram of part B in the middle;

[0025] Figure 5 for Figure 1 A schematic structural diagram of a first sealing gasket in the pressure vessel shown;

[0026] Figure 6 for Figure 1 A schematic structural diagram of the high-pressure shell in the pressure vessel shown;

[0027] Figure 7 A partially enlarged schematic diagram of a pressure vessel provided in another embodiment of the present application;

[0028] Figure 8 A partially enlarged schematic diagram of a pressure vessel provided in yet another embodiment of the present application;

[0029] Figure 9 This is a partially enlarged schematic diagram of a pressure vessel provided in yet another embodiment of the present application.

[0030] Among them, the reference numerals in the figures are:

[0031] 100 - housing; 200 - partition plate; 300 - sealing structure; 400 - second sealing structure; 101 - high-pressure chamber; 102 - low-pressure chamber; 110 - high-pressure housing; 111 - first end face; 112 - connecting ring; 113 - chamfer; 114 - first annular groove; 115 - second annular groove; 116 - perforation; 117 - third annular groove; 120 - low-pressure housing; 121 - fourth end face; 210 - through hole; 211 -first flared section; 212-second flared section; 220-second end face; 230-third end face; 301-first sealing gasket; 302-through hole; 303-mounting hole; 304-spacer; 310-high-pressure sealing structure; 320-low-pressure sealing structure; 311-inner sealing gasket; 321-outer sealing gasket; 330-first sealing ring; 340-second sealing ring; 350-inner sealing ring; 401-second sealing gasket. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0033] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0035] Furthermore, 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0036] Figure 1 The cross-sectional structure of a pressure vessel is shown. The pressure vessel includes a high-pressure shell 110, a low-pressure shell 120, a partition plate 200, and a sealing structure 300. The high-pressure shell 110, the low-pressure shell 120, and the partition plate 200 are coaxially arranged. The high-pressure shell 110 and the partition plate 200 enclose a high-pressure chamber 101, and the low-pressure shell 120 and the partition plate 200 enclose a low-pressure chamber 102. A sealing structure 300 is provided between the high-pressure shell 110 and the partition plate 200. The high-pressure shell 110 and the partition plate 200 are sealed together by the sealing structure 300, and the low-pressure shell 120 and the partition plate 200 are sealed together. A second sealing structure 400 is provided between the low-pressure shell 120 and the partition plate 200. The partition plate 200 is subjected to a pressure difference between the high-pressure chamber 101 and the low-pressure chamber 102, thereby reducing the pressure difference borne by other components inside the pressure vessel and reducing pressure deformation.

[0037] See also Figure 1 and Figure 2, the pressure vessel provided in the embodiment of the present application is now described. The pressure vessel can be, but is not limited to, used on a compressor casing, and the pressure vessel includes a high-pressure shell 110, a low-pressure shell 120 and a partition plate 200. Both the high-pressure shell 110 and the low-pressure shell 120 can be made of metal parts, and the high-pressure shell 110 and the low-pressure shell 120 can be connected and fixed by a connector. The partition plate 200 is arranged between the high-pressure shell 110 and the low-pressure shell 120; the high-pressure shell 110 and the partition plate 200 enclose a high-pressure chamber 101, and the low-pressure shell 120 and the partition plate 200 enclose a low-pressure chamber 102. The high pressure and low pressure mentioned in this application do not specifically refer to specific pressure values, but are only used to indicate the difference in pressure between the two chambers. A sealing structure 300 is provided between the high-pressure shell 110 and the partition plate 200, which is clamped between the high-pressure shell 110 and the partition plate 200; a second sealing structure 400 is provided between the low-pressure shell 120 and the partition plate 200, which is clamped between the low-pressure shell 120 and the partition plate 200; the sealing structure 300 and the second sealing structure 400 are both elastic parts, specifically rubber parts. The sealing structure 300 includes a high-pressure sealing structure 310 and a low-pressure sealing structure 320. The low-pressure sealing structure 320 is located on the outside of the high-pressure sealing structure 310. A through hole 210 connected to the low-pressure chamber 102 is opened on the partition plate 200. The through hole 210 is located between the high-pressure sealing structure 310 and the low-pressure sealing structure 320; the through hole 210 can be a straight hole or an inclined hole; when the through hole 210 is an inclined hole, the open end of the through hole 210 close to the high-pressure shell 110 is located between the high-pressure sealing structure 310 and the low-pressure sealing structure 320; the through hole 210 is configured to allow the fluid that penetrates the high-pressure sealing structure 310 in the high-pressure chamber 101 to flow out, and the aperture and number of the through holes 210 can be set according to actual application requirements; If the fluid in the cavity 101 can penetrate the high-pressure sealing structure 310, the fluid can flow into the low-pressure cavity 102 through the through hole 210. In this way, the pressure between the high-pressure sealing structure 310 and the low-pressure sealing structure 320 can be effectively reduced, that is, the sealing pressure difference between the high-pressure shell 110 and the outside world can be reduced to the sealing pressure difference between the low-pressure shell 120 and the outside world. The sealing pressure difference between the high-pressure shell 110 and the outside world is greatly reduced, and the sealing performance is improved. In other words, when the pressure in the high-pressure cavity 101 reaches the preset value, if the fluid in the high-pressure cavity 101 can penetrate the high-pressure sealing structure 310 and flow into the low-pressure cavity 102 through the through hole 210, it can effectively avoid the problem of excessive pressure on the high-pressure side causing leakage to the outside world, avoid damage to the environment and loss of pressure vessel function. When the pressure in the high-pressure cavity 102 is less than the preset value, the fluid is not enough to penetrate the high-pressure sealing structure 310, and the fluid is blocked by the first sealing structure 310 and no leakage occurs. That is to say, the pressure vessel using the pressure vessel is not only suitable for the sealing requirements of medium and low pressures, but also suitable for the sealing requirements of high pressures, thereby improving the adaptability of the pressure vessel.

[0038] Compared with the prior art, the pressure vessel provided in the present application has a through hole 210 connected to the low-pressure chamber on the partition plate 200. In this way, the pressure between the high-pressure sealing structure 310 and the low-pressure sealing structure 320 can be reduced, so that the sealing pressure difference between the high-pressure shell 110 and the outside world is greatly reduced, and the sealing performance is improved; at the same time, if the fluid in the high-pressure chamber 101 can penetrate the high-pressure sealing structure 310, it can flow to the low-pressure chamber 102 through the through hole 210, which can effectively avoid the problem of leakage to the outside world caused by excessive pressure on the high-pressure side, avoid damage to the environment and loss of function of the pressure vessel.

[0039] In one embodiment, see Figure 1 and Figure 2 The sealing structure 300 includes a first sealing gasket 301 disposed between the high-pressure housing 110 and the partition plate 200. The first sealing gasket 301 can be a rubber gasket or other elastic gasket. The first sealing gasket 301 includes an inner portion and an outer portion connected to the outer periphery of the inner portion. The inner portion of the first sealing gasket 301 forms a high-pressure sealing structure 310, and the outer portion of the first sealing gasket 301 forms a low-pressure sealing structure 320.

[0040] In one embodiment, a through hole 302 is formed on the first sealing gasket 301. When the fluid in the high-pressure chamber 101 is able to penetrate the high-pressure sealing structure 310, it can flow through the through hole 302 to the through hole 210 and finally into the low-pressure chamber 102. Both the through hole 210 and the through hole 302 can be circular holes, and the aperture of the through hole 210 can be set to be greater than or equal to the aperture of the through hole 302. To enhance sealing performance, multiple annular protrusions can be provided on one or both surfaces of the first sealing gasket 301.

[0041] The through hole 302 can be positioned directly opposite the through hole 210, with the central axis of the through hole 302 coinciding with the central axis of the through hole 210. Alternatively, the through hole 302 can be staggered relative to the through hole 210, with no axial overlap between the two. One or more through holes 302 can be provided. When multiple through holes 302 are provided on the first sealing gasket 301, the centers of the multiple through holes 302 can be located on the same circle. The central axis of the through hole 210 can be parallel to the central axis of the housing 100 or inclined relative to the central axis of the housing 100.

[0042] See Figure 1 and Figure 2The open end of the high-pressure shell 110 is the first end face 111. The two opposing faces of the partition plate are the second end face 220 and the third end face 230. The open end of the low-pressure shell 120 is the fourth end face 121. The first end face 111 is opposite to the second end face 220, and the third end face 230 is opposite to the fourth end face 121. The first end face 111 is in close contact with one side of the first sealing gasket 301. The second sealing structure 400 is sandwiched between the fourth end face 121 and the third end face 230. The width of the fourth end face 121 is set to be smaller than the width of the first end face 111. This facilitates the opening of the through hole 210 in the partition plate 200. Figure 5 、 Figure 6 A plurality of mounting holes 116 are respectively provided at corresponding positions near the outer edges of the high-pressure shell 110 and the low-pressure shell 120. The mounting holes 116 are evenly spaced along the circumference, and the positions of the mounting holes 116 of the two are respectively set in a one-to-one correspondence. The high-pressure shell 110 and the low-pressure shell 120 can be locked by connecting parts such as screws passing through the mounting holes 116 of the two; the first sealing gasket 301 has through-holes 303 respectively provided at the positions corresponding to the mounting holes 116, and the diameter of the through-hole 303 is set to be equal to the diameter of the mounting hole 116.

[0043] See Figure 1 、 Figure 3 The separator plate 200 is provided with a flange that extends into the high-pressure chamber 101. The outer diameter of the flange matches the inner diameter of the open end of the high-pressure housing 110. This flange acts as a stop, facilitating rapid assembly of the high-pressure housing 110 to the separator plate 200. The flange also serves as a pre-installation mechanism, improving assembly efficiency and the reliability of the fit between the high-pressure housing 110 and the separator plate 200. In one embodiment, the width of the low-pressure sealing structure 320 is set to be greater than or equal to the width of the high-pressure sealing structure 310. This facilitates fluid in the high-pressure chamber 101 to penetrate the high-pressure sealing structure 310 and flow into the low-pressure chamber 102 through the through-hole 210, thereby reducing the difficulty of fluid penetrating the high-pressure sealing structure 310.

[0044] In one embodiment, see Figure 2 、 Figure 5 and Figure 6The end surface of the open end of the high-pressure shell 110 is recessed to form a connecting ring 112. The connecting ring 112 is located between the high-pressure sealing structure 310 and the low-pressure sealing structure 320. The through hole 302 on the first sealing gasket 301 can correspond to the location of the connecting ring 112, and the location of the through hole 210 corresponds to the location of the through hole 302. In this way, the through hole 210 is connected to the connecting ring 112 through the through hole 302. The connecting ring 112 can be a continuous groove, such as an annular groove; the connecting ring 112 can also include multiple non-continuous grooves, which are located on the same circle or on multiple concentric circles; the cross-section of one side of the connecting ring 112 can be rectangular or arc-shaped, and the width of the cross-section can be set to be less than or equal to the aperture of the through hole 302 on the first sealing gasket 301. The provision of the connecting ring 112 can reduce the difficulty of the fluid in the high-pressure chamber 101 from penetrating the high-pressure sealing structure 310.

[0045] It can be understood that the connecting ring 112 can also be provided on the partition plate 200, that is, the connecting ring 112 is provided on the end face of the partition plate 200 facing the sealing structure; or the connecting ring 112 can be provided on both the high-pressure shell 110 and the partition plate 220, and the connecting ring 112 can be provided facing the high-pressure sealing structure 310.

[0046] In one embodiment, see Figure 8 The sealing structure 300 includes two sealing gaskets disposed between the high-pressure housing 110 and the partition plate 200. The two sealing gaskets include an inner sealing gasket 311 and an outer sealing gasket 321. The outer sealing gasket 321 is disposed outside the inner sealing gasket 311 and is coaxially arranged with the inner sealing gasket 311. The inner sealing gasket 311 forms the high-pressure sealing structure 310, and the outer sealing gasket 321 forms the low-pressure sealing structure 320. When the fluid in the high-pressure chamber 101 of the pressure vessel can permeate the inner sealing gasket 311, the fluid can flow into the low-pressure chamber 102 of the pressure vessel through the through-hole 210.

[0047] In one embodiment, see Figure 8The sealing structure 300 includes an inner gasket 311 and an outer gasket 321. The outer gasket 321 is located outside the inner gasket 311. The inner gasket 311 forms the high-pressure sealing structure 310, while the outer gasket 321 forms the low-pressure sealing structure 320. The width of the sealing area formed by the inner gasket 311 is smaller than the width of the sealing area of ​​the outer gasket 321. A gap is formed between the inner gasket 311 and the outer gasket 321, forming a spacer 304. The through hole 210 is located directly opposite this spacer 304. The end surface of the open end of the high-pressure housing 110 is recessed in the area corresponding to the inner gasket 311 to form a connecting ring 112. That is, the connecting ring 112 is located in the area where the high-pressure sealing structure is located. When the fluid in the high-pressure chamber 101 of the pressure vessel can penetrate the inner gasket 311, the fluid flows through the connecting ring 112 and then through the through hole 210 to the low-pressure chamber 102 of the pressure vessel. The connecting ring 112 may not be provided on the end face of the open end of the high-pressure shell 110, because the position of the through hole 210 is opposite to the spacer 304 between the inner sealing gasket 311 and the outer sealing gasket 321. The position of the through hole 210 corresponds to the spacer 304; the high-pressure shell 110 is recessed in the spacer 304 to form a connecting ring 112. After the fluid in the high-pressure chamber 101 penetrates the inner sealing gasket 311, it flows from the connecting ring 112 to the through hole 210, and then flows into the low-pressure chamber 102 of the pressure vessel. The connecting ring 112 can also be provided on the side close to the inner sealing gasket 311; the connecting ring 112 can be provided opposite to the through hole 210, or it can be provided offset from the through hole 210.

[0048] Understandably, the width of the sealing area of ​​the inner sealing gasket 311 can also be set larger, and the width of the sealing area of ​​the inner sealing gasket 311 is smaller than the width of the sealing area of ​​the outer sealing gasket 321, and the through hole 210 is provided on the inner side of the connection between the inner sealing gasket 311 and the outer sealing gasket 321; the inner sealing gasket 311 is provided with a through hole, and the through hole is located at a position directly opposite to the through hole 210 or at an area corresponding to the inner side of the position directly opposite to the through hole 210, and the end face of the open end of the high-pressure shell 110 is recessed in an area corresponding to the inner sealing gasket 311 to form a connecting ring 112, and the connecting ring 112 is located in an area corresponding to the inner side of the position where the through hole is opened in the inner sealing gasket 311. The number of connecting rings 112 is not limited to one, and can also be multiple. For example, two connecting rings 112 are set, and one connecting ring 112 is set at a position opposite to the position where the through hole 210 is opened, and the other connecting ring 112 is set at an area corresponding to the inner side of the position where the through hole 210 is opened. Alternatively, both connecting rings 112 can be set at an area corresponding to the inner side of the position where the through hole 210 is opened.

[0049] In one embodiment, see Figure 1 、 Figure 7The sealing structure 300 includes a first sealing ring 330 and a second sealing ring 340. Both the first sealing ring 330 and the second sealing ring 340 can be made of O-rings, which have good repeated elastic deformation performance and low manufacturing and use costs. The diameter of the first sealing ring 330 is smaller than that of the second sealing ring 340. The first sealing ring 330 and the second sealing ring 340 are arranged between the high-pressure housing 110 and the partition plate 200, and the first sealing ring 330 is located in the inner area of ​​the second sealing ring 340. The number of the first sealing ring 330 and the second sealing ring 340 can be set according to actual needs. The first sealing ring 330 forms a high-pressure sealing structure 310 between the high-pressure housing 110 and the partition plate 200, and the second sealing ring 340 forms a low-pressure sealing structure 320 between the high-pressure housing 110 and the partition plate 200. The through hole 210 is opened in the area of ​​the partition plate 200 corresponding to the first sealing ring 330 and the second sealing ring 340. Specifically, the distance between the through hole 210 and the first sealing ring 330 can be set to be equal to or unequal to the distance between the through hole 210 and the second sealing ring 340. The fluid in the high-pressure chamber 101 can penetrate the first sealing ring 330 and flow to the through hole 210, and then flow into the low-pressure chamber 102. When the high-pressure fluid flows to the second sealing ring 340, the pressure has been greatly reduced, so that the second sealing ring 340 can form an effective seal, reduce the sealing pressure difference, and avoid leakage to the outside.

[0050] See Figure 5 The first sealing ring 330 and the second sealing ring 340 are coaxially arranged, with their axial centers coinciding. The first sealing ring 330 is a regular O-shaped sealing ring, while the second sealing ring 340 is radially curved outward at the positions corresponding to the through-holes 303 to avoid the corresponding through-holes 303 while also providing a good sealing effect around the through-holes 303. The wire diameter of the first sealing ring 330 can be set to be equal to the wire diameter of the second sealing ring 340, or the wire diameter of the first sealing ring 330 can be set to be different from the wire diameter of the second sealing ring 340.

[0051] See also Figure 1 、 Figure 7 The end surface of the open end of the high-pressure shell 110 is recessed to form a connecting ring 112, and / or the corresponding end surface of the partition plate 200 is recessed to form a connecting ring 112. The connecting ring 112 is located between the first sealing ring 330 and the second sealing ring 340. The connecting ring 112 is arranged directly opposite the through hole 210. The connecting ring 112 is connected to the through hole 210. If the fluid in the high-pressure chamber 101 can penetrate the first sealing ring 330, the fluid can flow into the low-pressure chamber 102 through the through hole 210 after penetration. It can be understood that the connecting ring 112 can also be staggered with the through hole 210. The connecting ring 112 is arranged on the side close to the first sealing ring 330, that is, the connecting ring 112 is arranged in the area corresponding to the first sealing ring 330 and the through hole 210.

[0052] In one embodiment, see Figure 7 , at least one of the first end face 111 and the second end face 220 is provided with a first annular groove 114 and a second annular groove 115, that is, the first annular groove 114 and the second annular groove 115 may be provided at intervals on one of the high-pressure shell 110 and the partition plate 200, or the first annular groove 114 and the second annular groove 115 may be provided at corresponding positions on both the high-pressure shell 110 and the partition plate 200. In one embodiment, as Figure 7 As shown, a first annular groove 114 and a second annular groove 115 are provided on the first end face 111 of the high-pressure shell 110, a first sealing ring 330 is installed in the first annular groove 114, and a second sealing ring 340 is installed in the second annular groove 115, a wire diameter of the first sealing ring 330 is larger than a depth of the first annular groove 114, and a wire diameter of the second sealing ring 340 is larger than a depth of the second annular groove 115, and the first sealing ring 330 and the second sealing ring 340 are both clamped between the high-pressure shell 110 and the partition plate 200. The cross-section of one side of the first annular groove 114 and the second annular groove 115 can be rectangular or arc-shaped. When the fluid in the high-pressure chamber 101 passes through the first sealing ring 330, it squeezes the first sealing ring 330, causing the first sealing ring 330 to deform within the first annular groove 114. When the pressure is sufficiently high, the fluid can penetrate the first sealing ring 330. In this way, the fluid can flow from the gap between the first sealing ring 330 and the partition plate 200 to the through hole 210, facilitating the penetration of the high-pressure fluid. The high-pressure fluid then flows through the through hole 210 to the low-pressure chamber 102. The wire diameters of the first sealing ring 330 and the second sealing ring 340 can be set to be equal, and the first annular groove 114 and the second annular groove 115 can also be set to have groove bodies of the same size. If the wire diameters of the first sealing ring 330 and the second sealing ring 340 are set to be different, the sizes of the first annular groove 114 and the second annular groove 115 can be adjusted accordingly.

[0053] It is understood that the high-pressure sealing structure 310 and the low-pressure sealing structure 320 in the sealing structure 300 can be configured as the same structure, such as the structure in which the first sealing gasket 301, two sealing gaskets, or two sealing rings are provided between the high-pressure housing 110 and the partition plate 200 in the above embodiment. The high-pressure sealing structure 310 and the low-pressure sealing structure 320 in the sealing structure 300 can also be configured as different sealing structures.

[0054] In one embodiment, see Figure 9The sealing structure 300 includes an inner sealing ring 350 and an outer sealing gasket 321, which are disposed between the high-pressure housing 110 and the partition plate 200. The inner sealing ring 350 is located inside the outer sealing gasket 321. The inner sealing ring 350 constitutes the high-pressure sealing structure 310, and the outer sealing gasket 321 constitutes the low-pressure sealing structure 320. The first end surface 111 of the high-pressure housing 110 defines a third annular groove 117 for mounting the inner sealing ring 350. Both the inner sealing ring 350 and the outer sealing gasket 321 are sandwiched between the high-pressure housing 110 and the partition plate 200. Compared with the structure with a sealing gasket set on the inside, setting an inner sealing ring 350 on the inside can reduce the difficulty of the fluid penetrating the high-pressure sealing structure 310; if the fluid can penetrate the high-pressure sealing structure 310, it can flow into the low-pressure cavity of the pressure vessel through the through hole 210, which can effectively reduce the pressure between the high-pressure sealing structure 310 and the low-pressure sealing structure 320, and the sealing pressure difference between the high-pressure cavity and the outside world is greatly reduced, which can effectively improve the sealing performance of the pressure vessel.

[0055] It is understandable that the sealing structure 300 can also adopt another structure. The sealing structure 300 includes a sealing gasket and an O-ring, with a gap between the sealing gasket and the O-ring. The sealing gasket is located on the inner side of the O-ring and constitutes a high-pressure sealing structure 310, and the O-ring constitutes a low-pressure sealing structure 320. The end surface of the open end of the high-pressure shell 110 is provided with an annular groove for the installation of the O-ring. The O-ring and the sealing gasket are both sandwiched between the high-pressure shell 110 and the partition plate 200. The width of the area covered by the sealing gasket can be set smaller, thereby reducing the difficulty of the fluid in the high-pressure chamber 101 penetrating through the high-pressure sealing structure 310. The projection of the axial center of the through hole is located on the sealing gasket, that is, the outer side of the sealing gasket extends beyond the position where the through hole is opened. A through hole is opened on the sealing gasket, and the through hole can be set directly opposite the through hole, or the position of the through hole can also be in the area corresponding to the inner side of the through hole. A connecting ring may be formed in a recess at the open end of the shell, and the position of the connecting ring may be arranged opposite to the position of the through hole, or the connecting ring may be arranged in the inner area corresponding to the position of the through hole. In this way, if the fluid in the high-pressure chamber can penetrate the high-pressure sealing structure, the fluid will first pass through the connecting ring, then flow to the through hole through the through hole, and then flow into the low-pressure chamber through the through hole.

[0056] In one embodiment, see Figure 2A chamfer 113 is provided at the corner on the inner side of the open end of the high-pressure shell 110. In this way, a guiding slope is formed at the corner, and the airflow from the inlet of the high-pressure sealing structure becomes larger, which facilitates the fluid in the high-pressure chamber 101 to flow to the through hole 210 through the gap between the high-pressure shell 110 and the first sealing gasket 301, and the partition plate 200 and the first sealing gasket 301, thereby reducing the difficulty of the flow in the high-pressure chamber 101 to penetrate through the high-pressure sealing structure 310; the angle of the chamfer 113 can be but is not limited to 45 degrees, and the chamfer 113 can be a C angle or an R angle.

[0057] In one embodiment, see Figure 1 、 Figure 2 、 Figure 4 , a first flared section 211 and a second flared section 212 are respectively provided at both axial ends of the hole wall of the through hole 210. The diameter of the first flared section 211 is set to gradually increase in the direction from the through hole 210 to the low-pressure chamber 102, and the diameter of the second flared section 212 is set to gradually increase in the direction from the through hole 210 to the high-pressure chamber 101. In other words, a first flared section 211 and a second flared section 212 in a trumpet shape are respectively provided at both axial ends of the hole wall of the through hole 210. In this way, the first flared section 211 and the second flared section 212 can respectively play a guiding role, making the flow of the fluid smoother, and can facilitate the fluid that penetrates the high-pressure sealing structure 310 to quickly flow through the through hole 210 to the low-pressure chamber 102. Specifically, when processing the through hole 210, chamfers can be processed at both axial ends of the through hole 210 at the same time, so that the first flared section 211 and the second flared section 212 are respectively formed at both ends. As Figure 2 、 Figure 4 and Figure 5 As shown, a through hole 302 is opened at a position of the first sealing gasket 301 opposite to the through hole 210, and the end surface of the open end of the high-pressure shell 110 is recessed to form a connecting ring 112, which is arranged opposite to the through hole 210. The diameter of the equal-diameter section of the through hole 210 is set to be roughly equal to the aperture of the through hole 302, and the maximum diameter of the second expanded section 212 is set to be larger than the cross-sectional width of one side of the connecting ring 112.

[0058] like Figure 2As shown, a second sealing gasket 401 is provided between the low-pressure housing 120 and the partition plate 200. The second sealing gasket 401 constitutes a second sealing structure 400. The second sealing gasket 401 is an elastic member, which can be specifically a rubber member. The second sealing gasket 401 covers the end surface of the open end of the low-pressure housing 120. When the first sealing gasket 301 is sandwiched between the high-pressure housing 110 and the partition plate 200, the width of the second sealing gasket 401 is smaller than the width of the first sealing gasket 301, and the second sealing gasket 401 does not cover the through-hole 210. It is understandable that other structures can be used to achieve sealing between the low-pressure housing 120 and the partition plate 200. The low-pressure housing 120 and the partition plate 200 can also be sealed by using a sealing ring. Specifically, an annular groove can be formed in the end surface of the open end of the low-pressure housing 120. A sealing ring is installed in the annular groove. The sealing ring is sandwiched between the low-pressure housing 120 and the partition plate 200 to achieve sealing.

[0059] The compressor provided in the embodiment of the present application includes the pressure vessel of any of the above embodiments. The compressor can be a horizontal rotary compressor or a vertical rotary compressor; since a through hole 210 connected to the low-pressure chamber 102 is provided on the partition plate 200, the sealing pressure difference between the compressor casing and the outside is reduced from the high-pressure and external pressure difference to the low-pressure and external pressure difference, the sealing pressure difference is greatly reduced, and the sealing performance of the compressor is improved; at the same time, if the fluid in the high-pressure chamber 101 can penetrate the high-pressure sealing structure 310 on the inside, it can flow to the low-pressure chamber 102 through the through hole 210, which can effectively avoid leakage to the outside, avoid damage to the environment and loss of compressor function, thereby improving the reliability of the compressor.

[0060] The compressor also includes a pump body assembly, a motor and a crankshaft. The pump body assembly is housed in the high-pressure chamber 101, and the motor is housed in the low-pressure chamber 102. The crankshaft passes through the partition plate 200, and the central axis of the crankshaft coincides with the central axis of the high-pressure shell 110. The motor is connected to the pump body assembly through the crankshaft, and the motor can drive the pump body assembly to operate in the high-pressure chamber 101 through the crankshaft.

[0061] The air conditioning apparatus provided in an embodiment of the present application includes the compressor of any of the aforementioned embodiments. According to the air conditioning apparatus of this embodiment, by providing the aforementioned compressor, the sealing pressure differential between the compressor casing and the outside world is significantly reduced, effectively preventing leakage to the outside world caused by excessive pressure on the high-pressure side. This improves the sealing performance of the compressor and enhances the reliability of the air conditioning apparatus.

[0062] The vehicle provided in the embodiments of the present application includes the air conditioning apparatus of any of the above-described embodiments. The vehicle of this embodiment is not limited to a fuel-powered vehicle, but may also be a new energy vehicle, such as a hybrid vehicle, a pure electric vehicle, a fuel cell vehicle, an alcohol-ether fuel vehicle, a natural gas vehicle, etc. According to the vehicle of this embodiment, by providing the above-described air conditioning apparatus, the sealing pressure differential between the compressor casing and the outside world is significantly reduced, effectively avoiding leakage to the outside world caused by excessive pressure on the high-pressure side, improving the sealing performance of the compressor, and enhancing the reliability of the vehicle.

[0063] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A pressure vessel comprising a high-pressure shell, a low-pressure shell, and a partition plate, wherein the partition plate is disposed between the high-pressure shell and the low-pressure shell, the high-pressure shell and the partition plate enclose a high-pressure chamber, and the low-pressure shell and the partition plate enclose a low-pressure chamber, and a sealing structure is disposed between the high-pressure shell and the partition plate, characterized in that: A through hole is formed on the partition plate, the through hole being in communication with the low-pressure chamber, the sealing structure comprising a high-pressure sealing structure and a low-pressure sealing structure, the low-pressure sealing structure being located outside the high-pressure sealing structure, and the through hole being located between the high-pressure sealing structure and the low-pressure sealing structure; A communication ring is provided on the high-pressure housing, and the communication ring is arranged opposite to the sealing structure, and / or a communication ring is provided on the partition plate, and the communication ring is arranged opposite to the sealing structure.

2. The pressure vessel according to claim 1, wherein: The sealing structure includes a first sealing gasket, an inner portion of the first sealing gasket forms the high-pressure sealing structure, and an outer portion of the first sealing gasket forms the low-pressure sealing structure.

3. The pressure vessel according to claim 2, wherein: The first sealing gasket is provided with a through hole.

4. The pressure vessel according to claim 3, wherein: The through hole is connected to the through hole, and the position of the through hole is arranged opposite to the position of the through hole, or the through hole and the through hole are staggered.

5. The pressure vessel according to claim 1, wherein: The sealing structure includes an inner sealing gasket and an outer sealing gasket, the inner sealing gasket forms the high-pressure sealing structure, and the outer sealing gasket forms the low-pressure sealing structure.

6. The pressure vessel according to claim 1, wherein: The sealing structure includes a first sealing ring and a second sealing ring, the first sealing ring forms the high-pressure sealing structure, and the second sealing ring forms the low-pressure sealing structure.

7. The pressure vessel according to claim 6, wherein: The high-pressure shell has a first end face, and the partition plate has a second end face opposite to the first end face. At least one of the first end face and the second end face is provided with a first annular groove and a second annular groove. The first sealing ring is installed in the first annular groove and is clamped between the high-pressure shell and the partition plate. The second sealing ring is installed in the second annular groove and is clamped between the high-pressure shell and the partition plate.

8. The pressure vessel according to claim 1, wherein: The sealing structure includes an inner sealing ring and an outer sealing gasket, wherein the inner sealing ring forms the high-pressure sealing structure, and the outer sealing gasket forms the low-pressure sealing structure.

9. A compressor, characterized in that: A pressure vessel comprising the pressure vessel according to any one of claims 1 to 8.

10. An air conditioning device, characterized in that: Including the compressor according to claim 9.

11. A vehicle, characterized in that: Including the air conditioning equipment according to claim 10.

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