compressor

Abstract

The application provides a compressor, comprising a static scroll, a dynamic scroll and an exhaust cover, the static scroll and the dynamic scroll are engaged, and the static scroll and the dynamic scroll are at least partially located in the exhaust cover; the compressor has a high-pressure cavity, an intermediate compression cavity and a plurality of compression cavities, the compression cavities are at least partially located between the static scroll and the dynamic scroll, and the high-pressure cavity is at least partially located between the static scroll and the exhaust cover; the static scroll has a plurality of communication holes; each compression cavity is capable of communicating with at least two communication holes, and the communication holes are capable of communicating one of the compression cavities and the high-pressure cavity. In the application, the compressor has the high-pressure cavity and the plurality of compression cavities, the static scroll has the plurality of communication holes, each compression cavity is capable of communicating with at least two communication holes, each compression cavity has corresponding communication holes to timely discharge the liquid, prevent the structure from being damaged in the compression process, and each compression cavity corresponds to at least two communication holes, so that the liquid discharge effect is better.

Description

Technical Field

[0001] This application relates to the field of compressors, and more particularly to the static scroll structure of compressors. Background Technology

[0002] A compressor includes a stationary scroll and a moving scroll that mesh with each other, forming a compression chamber to compress gas. In related technologies, liquid may appear in the compression chamber during the compression process. Since liquid is difficult to compress, it can damage the structure of the stationary and moving scrolls, affecting the operation of the compressor. Summary of the Invention

[0003] The purpose of this application is to provide a compressor that can promptly discharge liquid from the compression chamber.

[0004] This application provides a compressor, including a stationary scroll, a moving scroll, and an exhaust cover, wherein the stationary scroll and the moving scroll mesh with each other, and the stationary scroll and the moving scroll are at least partially located within the exhaust cover; the compressor has a high-pressure chamber, an intermediate compression chamber, and a plurality of compression chambers, wherein the compression chambers are at least partially located between the stationary scroll and the moving scroll, the intermediate compression chambers are at least partially located between the stationary scroll and the moving scroll, and the high-pressure chamber is at least partially located between the stationary scroll and the exhaust cover;

[0005] The static vortex disk has multiple connecting holes; each of the compression chambers is connected to at least two connecting holes, and the connecting holes are connected to one of the compression chambers and the high-pressure chamber.

[0006] In this application, the compressor has a high-pressure chamber and multiple compression chambers. The stationary scroll has multiple connecting holes. Each compression chamber is connected to at least two connecting holes. Each compression chamber has a corresponding connecting hole to discharge the liquid in a timely manner, reducing the possibility of damage to the structure during compression. Furthermore, each compression chamber corresponds to at least two connecting holes, which makes the liquid discharge effect better. Attached Figure Description

[0007] Figure 1 This is a perspective view of the compressor in this application;

[0008] Figure 2 This is a cross-sectional view of the compressor in this application;

[0009] Figure 3 This is a perspective view of the interaction between the stationary vortex disk and the valve assembly in this application;

[0010] Figure 4 This is a cross-sectional view of the stationary and moving scroll plates in the first meshing state in this application.

[0011] Figure 5This is a cross-sectional view of the stationary and moving scroll plates in the second meshing state in this application;

[0012] Figure 6 for Figure 5 Enlarged view of point A in the middle circle;

[0013] Figure 7 An exploded view of the fit between the stationary vortex disc and the valve assembly in this application. Detailed Implementation

[0014] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0015] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0016] In a compressor, the meshing stationary and moving scrolls form a compression chamber to compress the intake gas. However, during the compression process, the pressure inside the compression chamber may become too high, which can damage the structure of the stationary and moving scrolls. In related technologies, to prevent this from happening, a connecting hole is provided on the stationary scroll. When the pressure inside the compression chamber is too high, the gas can be discharged in advance through the connecting hole, thereby restoring the pressure inside the compression chamber to normal and protecting the structure.

[0017] On the other hand, during the compressor's intake and compression process, some liquid may also be drawn into the compression chamber, which may damage the compressor's structure, and the liquid needs to be discharged in time.

[0018] However, during practical application, the researchers found that even with the aforementioned connecting hole, the damage to the stationary and moving scroll structures was only slightly improved compared to before, and the effect was still poor. In subsequent long-term research, the researchers discovered that because the position of the connecting hole is fixed, and the compression chambers formed by the meshing of the stationary and moving scrolls often have multiple components, when the pressure in one of the compression chambers becomes too high, the liquid or gas cannot be discharged from the connecting hole in time. Therefore, the excessive pressure still damages the stationary and moving scrolls.

[0019] Therefore, this application proposes a compressor, such as Figure 1-7As shown, its specific structure includes a stationary scroll 1, a moving scroll 2, and an exhaust cover 3. The stationary scroll 1 and the moving scroll 2 are meshed together. The stationary scroll 1 is at least partially located inside the exhaust cover 3, and the moving scroll 2 is at least partially located inside the exhaust cover 3. The compressor has a high-pressure chamber 4, an intermediate compression chamber 510, and multiple compression chambers 5. The compression chambers 5 are at least partially located between the stationary scroll 1 and the moving scroll 2. The intermediate compression chambers 510 are at least partially located between the stationary scroll 1 and the moving scroll 2. The high-pressure chamber 4 is at least partially located between the stationary scroll 1 and the exhaust cover 3. The stationary scroll 1 has multiple connecting holes 101. Each compression chamber 5 can communicate with at least two connecting holes 101, and the connecting holes 101 can connect one of the compression chambers 5 and the high-pressure chamber 4.

[0020] In this application, the compressor forms a compression chamber 5 by meshing a stationary scroll 1 and a moving scroll 2, thereby compressing the intake gas. The principle is the same as that in related technologies and will not be elaborated here. During the compression process, the stationary scroll 1 and the moving scroll 2 form multiple compression chambers 5. Multiple connecting holes 101 are provided on the stationary scroll 1, and each connecting hole 101 can connect the compression chamber 5 and the high-pressure chamber 4. Each compression chamber 5 can be connected to a corresponding connecting hole 101, so that when the liquid or gas pressure in a certain compression chamber 5 is too high, it can be discharged into the high-pressure chamber 4 in a timely manner from the connecting hole 101 corresponding to the compression chamber 5.

[0021] In addition, among the multiple connecting holes 101 opened on the stationary volute 1, each compression chamber 5 is connected to at least two connecting holes 101. Thus, when the pressure in the compression chamber 5 is too high, the gas in the compression chamber 5 can be discharged in time through the two connecting holes 101. Compared with one connecting hole 101, the amount of gas discharged through two connecting holes 101 is greater, which can release part of the excessive pressure in the compression chamber 5 more quickly and timely, so that the pressure in the compression chamber 5 returns to the normal state. The speed and timeliness of early exhaust also improve the protection of the stationary volute 1 and the moving volute 2.

[0022] If there is only one connecting hole 101, or if the size of the connecting hole 101 is small, then when the pressure in the corresponding compression chamber 5 is too high, the liquid or high gas pressure cannot be discharged from the connecting hole 101 in time, which will still cause damage to the stationary scroll 1 and the moving scroll 2.

[0023] If the diameter of the connecting hole 101 is set to be larger, although the flow rate will increase, the wall thickness of the spiral walls of both the stationary volute 1 and the moving volute 2 is relatively small. During the meshing process of the stationary volute 1 and the moving volute 2, the spiral wall of the moving volute 2 cannot cover the connecting hole 101. As a result, during the movement of the spiral wall of the moving volute 2, the adjacent compression chambers 5 will be connected through the connecting hole 101, allowing gas to flow in the adjacent compression chambers 5. Gas in the compression chamber 5 with higher pressure will flow to the compression chamber 5 with lower pressure, resulting in pressure loss and failing to meet the requirements of gas compression.

[0024] More specifically, such as Figure 4 As shown, the stationary scroll 1 and the moving scroll 2 have a first engagement state. In the first engagement state, the compressor has a first compression chamber 501, a second compression chamber 502, a third compression chamber 503 and a fourth compression chamber 504. The first compression chamber 501, the second compression chamber 502, the third compression chamber 503 and the fourth compression chamber 504 are respectively connected to at least two connecting holes 101. The stationary scroll 1 has an exhaust hole 102, which is connected to the intermediate compression chamber 510.

[0025] In the first meshing state, starting from the initial position of the spiral wall 104 of the stationary scroll 1, the stationary scroll 1 and the moving scroll 2 in the compressor are in the initial meshing state from the stationary scroll 1. At this time, there are also more compression chambers 5 formed between the stationary scroll 1 and the moving scroll 2. Then, as the moving scroll 2 moves along the spiral wall 104 of the stationary scroll 1, the compressed gas moves from the first compression chamber 501 located on the outside to the middle compression chamber 510 located in the middle of the stationary scroll 1, and is finally discharged.

[0026] In related technologies, the connecting hole is located near the center of the stationary volute because the pressure near the center of the stationary volute, i.e., the discharge position, is relatively high during the compression process, and excessive pressure is likely to occur in this area. Therefore, a connecting hole is provided near the center of the stationary volute. However, in this application, in the first engagement state, such as... Figure 4 As shown, the first meshing state is also the state in which the most compression chambers 5 are formed between the stationary volute 1 and the moving volute 2. At this time, all compression chambers 5 are connected to at least two connecting holes 101. Thus, even if the pressure in the first compression chamber 501, which is located on the outermost side and has just started to compress, is too high, it can be discharged in advance through the connecting hole 101 connected to the first compression chamber 501, thereby reducing the excessive pressure in the first compression chamber 501 and achieving timely and rapid discharge in advance.

[0027] If, as in related technologies, the connecting hole 101 is located near the middle of the stationary volute 1, then if the pressure in the first compression chamber 501 becomes too high, the pressure cannot be discharged in time and will continue to be compressed, moving closer to the middle of the stationary volute 1. During this process, the pressure will continue to increase. When the pressure in the first compression chamber 501 is too high, it already puts a burden on the structure of the stationary volute 1 and the moving volute 2. As the pressure continues to increase during the movement closer to the middle of the stationary volute 1, it will further increase the burden on the stationary volute 1 and the moving volute 2, thereby causing a greater negative impact on their structure.

[0028] Among them, such as Figure 5 As shown, the stationary scroll 1 and the moving scroll 2 have a second engagement state. In the second engagement state, the compressor has a fifth compression chamber 505 and a sixth compression chamber 506. The fifth compression chamber 505, the sixth compression chamber 506 and the intermediate compression chamber 510 are respectively connected to at least two connecting holes 101. The stationary scroll 1 has an exhaust hole 102, which is connected to the intermediate compression chamber 510.

[0029] The second engagement state is when the stationary volute 1 and the moving volute 2 have been engaged for a period of time, that is, when the moving volute 2 has been engaged along the spiral wall 104 of the stationary volute 1 for a certain distance. At this time, the number of compression chambers 5 formed between the stationary volute 1 and the moving volute 2 is less than the number of compression chambers 5 formed in the first engagement state. At this time, the gas in the compression chamber 5 has been compressed for a period of time and has a high pressure. If the pressure in a certain compression chamber 5 is too high, it can be discharged in advance through the connecting hole 101 connected to the corresponding compression chamber 5.

[0030] like Figure 4-7 As shown, the stationary vortex disk 1 includes a stationary disk end plate 103 and a spiral wall 104, and the connecting holes 101 are arranged along the spiral direction of the spiral wall 104; at least two of the multiple connecting holes 101 are close to each other.

[0031] like Figure 6 As shown, the minimum distance between two adjacent connecting holes 101 is defined as L, where L satisfies the following relationship: 0mm < L ≤ 4mm. In the preferred embodiment, L satisfies the following relationship: 0mm < L ≤ 1mm.

[0032] Although the connecting hole 101 in this application is fixed at a position on the stationary end plate 103, it is arranged along the spiral direction of the spiral wall 104 of the stationary volute 1. Even if the size and position of the compression chamber 5 are constantly changing during the meshing process of the moving volute 2, it can always ensure that each compression chamber 5 has a corresponding connecting hole 101 to communicate with it.

[0033] By placing at least two connecting holes 101 in close proximity, each compression chamber 5 can communicate with at least two connecting holes 101. The purpose of having at least two connecting holes 101 is to improve the effect and speed of early discharge. This application is not limited to each compression chamber 5 communicating with two connecting holes 101; the number of connecting holes 101 can be determined according to the actual application. This prevents excessive pressure in the compression chamber 5 from damaging the structure.

[0034] like Figure 3 and Figure 7 As shown, the compressor includes a valve assembly 6, which is at least partially located within the high-pressure chamber 4. The valve assembly 6 includes a valve plate 601 and a retainer 602. The valve plate 601 is connected to the retainer 602 and to the stationary scroll 1. The valve plate 601 is at least partially in contact with the stationary scroll end plate 103. On a projection plane perpendicular to the axial direction of the stationary scroll 1, the valve plate 601 at least partially covers the connecting hole 101.

[0035] Valve assembly 6 controls the opening and closing of the connecting hole 101. The compression chamber 5 is used to compress the intake gas; therefore, the connecting hole 101 cannot remain open continuously. Under normal compressor operation, the connecting hole 101 is always closed under the control of valve assembly 6. When the pressure in a compression chamber 5 becomes too high, the increased pressure can open valve assembly 6 to allow premature venting. After premature venting, the valve plate 601 in valve assembly 6 will again close the connecting hole 101. Alternatively, if liquid enters the compression chamber 5, it can also cause excessive pressure, which can then be released through the connecting hole 101.

[0036] The valve plate 601 can simultaneously abut against at least two adjacent connecting holes 101. This proximity of at least two connecting holes 101 facilitates the calculation of their opening positions, ensuring each compression chamber 5 can connect to its corresponding connecting hole 101. It also reduces the number of valve plates 601. If the at least two connecting holes 101 connected to each compression chamber 5 were far apart, each connecting hole 101 would require a corresponding valve plate 601 to abut against it, controlling its opening and closing. This would increase cost, increase the overall weight of the compressor, and occupy more internal space. The proximity of the connecting holes 101 allows one valve plate 601 to control the opening and closing of at least two connecting holes 101. When the pressure in the corresponding compression chamber 5 becomes too high, the at least two connecting holes 101 can simultaneously open the valve plate 601, which is more efficient and timely than having each connecting hole 101 open its respective valve plate 601.

[0037] The retainer 602 in the valve assembly 6 can prevent the valve plate 601 from exceeding the range of elastic deformation during the process of being pushed open and deformed, so that the valve plate 601 cannot return to its original position after being pushed open and continues to press against the connecting hole 101.

[0038] The compressor includes a connecting part 7, which is connected to the stationary end plate 103. The compressor has a mounting hole 8 that penetrates the stationary end plate 103, the valve plate 601, and the retainer 602. The mounting hole 8 also penetrates at least a portion of the connecting part 7. The compressor also includes a connector 9, which is at least partially located within the mounting hole 8. The connecting part 7, the stationary end plate 103, the valve plate 601, and the retainer 602 are connected to the connector 9.

[0039] The connecting part 7 provides a connection point for the connector 9, thereby connecting and fixing the valve assembly 6. The stationary plate 103 is relatively thin. If the connector 9 only connects to the stationary plate 103 when passing through the mounting hole 8, an effective connection cannot be achieved under the long-term compression vibration of the compressor. The connecting part 7 provides sufficient connection length for the connector 9, thus achieving effective connection and fixing. The mounting hole 8 can completely penetrate the connecting part 7 or only partially, depending on the actual application, and is not limited here. The connecting part 7, the stationary plate 103, and the spiral wall 104 can be separate structures; the connecting part 7 can be welded to the stationary plate 103; or they can be a single piece, and this is not limited in this application. In one embodiment, the connector 9 can be a bolt.

[0040] like Figure 3 As shown, the compressor has a limiting hole 10, which passes through the valve plate 601 and the retainer 602, and the limiting hole 10 also passes through a portion of the stationary plate 103; the compressor includes a limiting part 11, which is at least partially located within the limiting hole 10, and the valve plate 601, the retainer 602 and the stationary plate 103 are connected to the limiting part 11.

[0041] The limiting hole 10 and the limiting part 11 cooperate to limit the valve assembly 6, preventing the valve assembly 6 from being misaligned under the blowing of high-pressure gas or during the opening and closing process of the valve plate 601, so that it can no longer hold against the connecting hole 101, causing direct connection between the compression chamber 5 and the high-pressure chamber 4, so that the stationary scroll plate 1 and the moving scroll plate 2 can no longer compress the gas.

[0042] like Figure 7 As shown, the stationary volute 1 has a groove 105 located on the side wall of the stationary volute end plate 103 near the valve plate 601; on a projection plane perpendicular to the axial direction of the stationary volute 1, the valve plate 601 at least partially overlaps with the groove 105.

[0043] The groove 105 allows the valve plate 601 to fit more closely to the surface of the stationary end plate 103. This prevents unevenness on the surface of the stationary end plate 103 due to manufacturing tolerances, which would prevent the valve plate 601 from effectively abutting the connecting hole 101 when the surfaces of the valve plate 601 and the stationary end plate 103 are in contact. The groove 105 also creates a gap between the planes of the valve plate 601 and the stationary end plate 103, providing a clearance and reducing contact between them. This allows the valve plate 601 to directly abut against the stationary end plate 103 at the location of the connecting hole 101, thereby improving the sealing performance.

[0044] The above embodiments are only used to illustrate this application and are not intended to limit the technical solutions described in this application. The understanding of this specification should be based on those skilled in the art. For example, directional descriptions such as "front", "back", "left", "right", "up", and "down" are only used to describe the relationship between objects and are not substantial limitations. "Multiple" means at least two or more.

[0045] Although this specification has described the present application in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present application, and all technical solutions and improvements that do not depart from the spirit and scope of the present application should be covered within the scope of the claims of the present application.

Claims

1. A compressor, characterized in that, The compressor includes a stationary volute (1), a moving volute (2), and an exhaust cover (3). The stationary volute (1) meshes with the moving volute (2). The stationary volute (1) is at least partially located inside the exhaust cover (3), and the moving volute (2) is at least partially located inside the exhaust cover (3). The compressor has a high-pressure chamber (4), an intermediate compression chamber (510), and a plurality of compression chambers (5). The compression chambers (5) are at least partially located between the stationary volute (1) and the moving volute (2). The intermediate compression chambers (510) are at least partially located between the stationary volute (1) and the moving volute (2). The high-pressure chamber (4) is at least partially located between the stationary volute (1) and the exhaust cover (3). The static vortex disk (1) has a plurality of connecting holes (101); each of the compression chambers (5) can communicate with at least two of the connecting holes (101), and the connecting holes (101) can connect one of the compression chambers (5) and the high pressure chamber (4). The stationary vortex disk (1) includes a stationary disk end plate (103) and a spiral wall (104). The connecting holes (101) are arranged along the spiral direction of the spiral wall (104). At least two of the multiple connecting holes (101) are close to each other to control the opening and closing of at least two of the connecting holes (101).

2. The compressor according to claim 1, characterized in that, The stationary scroll (1) and the moving scroll (2) are in a first meshing state. In the first meshing state, the compressor has a first compression chamber (501), a second compression chamber (502), a third compression chamber (503), and a fourth compression chamber (504). The first compression chamber (501), the second compression chamber (502), the third compression chamber (503), and the fourth compression chamber (504) are respectively connected to at least two of the connecting holes (101). The stationary scroll (1) has an exhaust hole (102), which is connected to the intermediate compression chamber (510).

3. The compressor according to claim 1, characterized in that, The stationary scroll (1) and the moving scroll (2) have a second engagement state. In the second engagement state, the compressor has a fifth compression chamber (505) and a sixth compression chamber (506). The fifth compression chamber (505) and the sixth compression chamber (506) are respectively connected to at least two of the connecting holes (101). The stationary scroll (1) has an exhaust hole (102). The exhaust hole (102) is connected to the intermediate compression chamber (510).

4. The compressor according to claim 1, characterized in that, The minimum distance between two adjacent connecting holes (101) is defined as L, where the range of L satisfies the following relationship: 0mm < L ≤ 4mm.

5. The compressor according to claim 4, characterized in that, The range of L satisfies the following relationship: 0mm < L ≤ 1mm.

6. The compressor according to claim 1, characterized in that, The compressor includes a valve assembly (6) which is at least partially located in the high-pressure chamber (4). The valve assembly (6) includes a valve plate (601) and a retainer (602). The valve plate (601) is connected to the retainer (602) and the valve plate (601) is connected to the stationary scroll plate (1). The valve plate (601) is at least partially in contact with the stationary disc end plate (103); on the projection plane perpendicular to the axial direction of the stationary vortex disc (1), the valve plate (601) at least partially covers the connecting hole (101).

7. The compressor according to claim 6, characterized in that, The compressor includes a connecting part (7) connected to the stationary plate (103). The compressor has a mounting hole (8) that passes through the stationary plate (103), the valve plate (601), and the retainer (602). The mounting hole (8) passes through at least a portion of the connecting part (7). The compressor includes a connector (9) at least partially located within the mounting hole (8), and the connecting part (7), the stationary plate (103), the valve plate (601) and the retainer (602) are connected to the connector (9).

8. The compressor according to claim 6 or 7, characterized in that, The compressor has a limiting hole (10) that passes through the valve plate (601) and the retainer (602), and the limiting hole (10) also passes through a portion of the stationary plate end plate (103). The compressor includes a limiting part (11) that is at least partially located within the limiting hole (10), and the valve plate (601), the retainer (602), and the stationary plate end plate (103) are connected to the limiting part (11).

9. The compressor according to claim 8, characterized in that, The stationary vortex disk (1) has a groove (105) located on the side wall of the stationary disk end plate (103) near the valve plate (601); on a projection plane perpendicular to the axial direction of the stationary vortex disk (1), the valve plate (601) at least partially overlaps with the groove (105).

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