compressor

Abstract

The application provides a compressor, comprising a static scroll and a dynamic scroll, the compressor comprising a compression cavity, the compression cavity being at least partially located between the static scroll and the dynamic scroll; the static scroll comprising a static scroll end plate and a static scroll spiral wall, the static scroll spiral wall and the dynamic scroll spiral wall being engaged; a first sealing gasket being connected to a top of a tooth of the dynamic scroll, the first sealing gasket being capable of contacting the static scroll end plate; the static scroll end plate having an enthalpy-increasing channel, the enthalpy-increasing channel being capable of communicating with the compression cavity; the enthalpy-increasing channel comprising an outlet, a projection plane being defined as a plane perpendicular to an axial direction of the dynamic scroll, the static scroll and the dynamic scroll having an engaged state, in the engaged state, a projection of the first sealing gasket on the projection plane and a projection of the outlet on the projection plane both having a spacing. In the engaged state, the first sealing gasket has a spacing from the outlet, so that in the process of engagement of the static scroll and the dynamic scroll, the spacing enables the first sealing gasket to be away from the outlet of the enthalpy-increasing channel, thereby reducing the possibility of floating of the first sealing gasket and improving the sealing effect.

Description

Technical Field

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

[0002] A compressor consists of a stationary scroll and a moving scroll, with a compression chamber between them. These two scrolls mesh to compress the refrigerant gas. Under certain operating conditions, enthalpy-increasing technology is used to meet heat exchange requirements. This involves injecting a portion of pressurized gas into the compression chamber to mix with the partially compressed refrigerant before further compression. Therefore, an enthalpy-increasing channel is created on the stationary scroll to inject pressurized refrigerant gas.

[0003] In related technologies, the compressor also includes a gasket, a stationary scroll including a scroll end plate, an enthalpy-increasing channel located on the stationary scroll end plate, and a gasket positioned at the top of the teeth on the spiral wall of the moving scroll, abutting against the stationary scroll end plate. However, during the gas injection and enthalpy-increasing process, the gasket moves to the outlet position of the enthalpy-increasing channel as the moving scroll meshes, and the injected gas causes the gasket to float, thus affecting the sealing effect. Summary of the Invention

[0004] This application provides a compressor, including a stationary scroll and a moving scroll. The compressor includes a compression chamber, which is at least partially located between the stationary scroll and the moving scroll. The stationary scroll includes a stationary end plate and a stationary spiral wall, and the moving scroll includes a moving end plate and a moving spiral wall. The stationary spiral wall and the moving spiral wall are meshed together.

[0005] The compressor includes a first sealing gasket, the spiral wall of the moving disc includes the top of the moving disc teeth, the first sealing gasket is connected to the top of the moving disc teeth, and the first sealing gasket can contact the stationary disc end plate;

[0006] The stationary plate has an enthalpy-increasing channel, which is connected to the compression chamber.

[0007] The enthalpy-increasing channel includes an outlet. The surface perpendicular to the axial direction of the moving vortex is defined as the projection surface. The stationary vortex and the moving vortex are in an engaged state. In the engaged state, the projection of the first sealing gasket on the projection surface and the projection of the outlet on the projection surface both have a gap.

[0008] In this application, in the meshing state, the first sealing gasket has a gap with the outlet, so that during the meshing process of the stationary volute and the moving volute, the gap allows the first sealing gasket to move away from the outlet of the enthalpy-increasing channel, thereby reducing the possibility of the first sealing gasket floating and improving the sealing effect. Attached Figure Description

[0009] Figure 1 This is a perspective view of the compressor structure in this application;

[0010] Figure 2 This is a cross-sectional view of the compressor structure in this application;

[0011] Figure 3 This is a front view of the fit between the stationary scroll plate and the moving scroll plate in this application;

[0012] Figure 4 This is a cross-sectional view of the static vortex disk structure in this application;

[0013] Figure 5 This is an exploded view of the static and dynamic scroll disk structures in this application;

[0014] Figure 6 This is a top view of the static vortex disk structure in this application;

[0015] Figure 7 This is a bottom view of the static vortex disk structure in this application;

[0016] Figure 8 This is a top view of the moving scroll structure in this application;

[0017] Figure 9 for Figure 3 A cross-sectional view of the stationary and moving scroll plates at section AA in the first meshing state.

[0018] Figure 10 for Figure 3 A cross-sectional view of the stationary and moving scroll plates at section AA along the middle section in the second meshing state.

[0019] Figure 11 This is a cross-sectional view of the fit between the stationary scroll plate and the moving scroll plate in this application;

[0020] Figure 12 This is a cross-sectional front view of the engagement of the stationary and moving scroll plates in this application. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] In related technologies, compressors include a stationary scroll and a moving scroll, with a compression chamber between them for compressing refrigerant gas entering the chamber. To achieve a sealed compression chamber, sealing gaskets are placed at the tips of the teeth on both the stationary and moving scroll spiral walls, thereby improving the sealing performance of the compression chamber. However, with increasingly complex operating environments, in some conditions, such as low-temperature conditions, enthalpy-increasing technology is often used to meet subsequent heat exchange requirements. The principle is that an enthalpy-increasing channel is opened on the end plate of the stationary scroll to introduce refrigerant gas at a certain pressure. The pressure of this gas is between the pressure of the refrigerant before entering the compressor and the pressure of the refrigerant after compression and discharge from the compressor. The refrigerant gas at a certain pressure enters the compression chamber through the enthalpy-increasing channel, mixes with the refrigerant gas, and is then compressed, which increases the refrigerant flow rate in the condenser and the enthalpy difference in the circuit.

[0024] However, since the enthalpy-increasing channel is located on the end plate of the stationary volute, and the sealing gasket on the moving volute is sealed against the end plate of the stationary volute, during the meshing process of the stationary and moving volutes, the sealing gasket will move to the outlet of the enthalpy-increasing channel along with the meshing movement of the moving volute. The gas injected into the compression chamber from the enthalpy-increasing channel will cause the sealing gasket to float, thus affecting the sealing effect.

[0025] This application provides a compressor, such as Figures 1 to 12 Its specific structure includes a stationary scroll 1 and a moving scroll 2. The compressor includes a compression chamber 3, which is at least partially located between the stationary scroll 1 and the moving scroll 2. The stationary scroll 1 includes a stationary end plate 101 and a stationary spiral wall 102, and the moving scroll 2 includes a moving end plate 201 and a moving spiral wall 202. The stationary spiral wall 102 and the moving spiral wall 202 are meshed together. The compressor includes a first sealing gasket 4, and the moving spiral wall 202 includes the top of the moving teeth 2020. The first sealing gasket 4 and the moving spiral wall 202 are connected to each other. The top of the moving disc tooth 2020 is connected, and the first sealing gasket 4 can contact the stationary disc end plate 101; the stationary disc end plate 101 has an enthalpy-increasing channel 103, which can connect to the compression chamber 3; the enthalpy-increasing channel 103 includes an outlet 104, and the surface perpendicular to the axial direction of the moving volute 2 is defined as the projection surface. The stationary volute 1 and the moving volute 2 are in a meshing state. In the meshing state, the projection of the first sealing gasket 4 on the projection surface and the projection of the outlet 104 on the projection surface both have a gap.

[0026] The moving disc spiral wall 202 includes a thick wall portion 203. When the meshing point of the moving disc spiral wall 202 and the stationary disc spiral wall 102 is close to or located at the outlet 104 position, the side wall of the thick wall portion 203 contacts the stationary disc spiral wall 102, and the projection of the outlet 104 on the projection surface has a gap with the projection of the first sealing gasket 4 on the projection surface.

[0027] The meshing between the stationary scroll 1 and the moving scroll 2 compresses the intake refrigerant gas. The first sealing gasket 4 partially seals the compression chamber 3. A thick-walled portion 203 is provided in the thickness direction of the moving scroll spiral wall 202 of the moving scroll 2. Compared with related technologies, the thick-walled portion 203 increases the thickness of the moving scroll spiral wall 202. The position of the thick-walled portion 203 is such that during the meshing of the moving scroll 2 and the stationary scroll 1, the first sealing gasket 4 and the outlet 104 of the enthalpy-increasing channel 103 can be close to the corresponding position. That is, in the first meshing state mentioned above, the thick-walled portion 203 increases the thickness of the moving scroll spiral wall 202 at this position. As a result, in this meshing state, the first sealing gasket 4, which would normally move to the position of the outlet 104 with the meshing of the moving scroll 2, can be moved away from the position of the outlet 104 by the thick-walled portion 203, thereby reducing the floating of the first sealing gasket 4 caused by the injected gas.

[0028] During the continuous meshing of the stationary scroll 1 and the moving scroll 2, after meshing to the first meshing state, the thick-walled portion 203 will move to the position of the corresponding outlet 104 as the moving scroll 2 meshes, so that the first sealing gasket 4 is further away from the outlet 104 than the thick-walled portion 203, reducing the risk of the first sealing gasket 4 floating.

[0029] If the solution in the relevant technology is adopted, the first sealing gasket 4 will still move to the outlet 104 position, which may lead to sealing failure. However, the thick wall part 203 makes the thickness of the moving disc spiral wall 202 relatively increased. When the first sealing gasket 4 moves to the same position, the thick wall part 203 can replace the first sealing gasket 4 and face the outlet 104, thereby reducing the occurrence of the injected gas directly blowing on the first sealing gasket 4 and causing it to float.

[0030] Specifically, such as Figure 9 As shown, the meshing state includes a first meshing state, in which the thick-walled portion 203 contacts the stationary spiral wall 102, and in the axial direction of the moving scroll 2, the end face of the thick-walled portion 203 is directly opposite the outlet 104; the end face of the thick-walled portion 203 can contact the wall constituting the outlet 104; the meshing state also includes a second meshing state, in which the enthalpy-increasing channel 103 is connected to the compression chamber 3; compared to the first meshing state, the thick-walled portion 203 is further away from the outlet 104 in the second meshing state.

[0031] The projected area of ​​the thick-walled portion 203 is larger than the projected area of ​​the wall constituting the outlet 104. The thick-walled portion 203 can completely cover the outlet 104, thereby allowing the first sealing gasket 4 to be far away from the outlet 104. If the gas is injected in the first engagement state, it will directly contact the thick-walled portion 203 first, thus reducing the impact on the first sealing gasket 4.

[0032] like Figure 10As shown, the engagement state includes a second engagement state. In the second engagement state, compared to the first engagement state, the thick-walled portion 203 is further away from the outlet 104, and the enthalpy-increasing channel 103 is connected to the compression chamber 3.

[0033] In the second engagement state, the thick-walled portion 203 moves with other moving disc spiral walls 202 or abuts against the stationary disc end plate 101. At this time, the enthalpy-increasing channel 103 is directly connected to the compression chamber 3, and the injected gas is directly injected into the compression chamber 3. The thick-walled portion 203 does not obstruct or interfere with the injection of gas. When the first sealing gasket 4 is engaged at the outlet 104, the thick-walled portion 203 can obstruct the outlet 104 to prevent gas from directly blowing onto the first sealing gasket 4, causing it to float and affecting the sealing effect.

[0034] like Figure 6 and 7 As shown, the thick-walled part 203 and the moving disc spiral wall 202 are integral parts. The stationary disc spiral wall 102 includes the stationary disc tooth root part 1021, and the outlet 104 is located on the stationary disc end plate 101 near the stationary disc tooth root part 1021.

[0035] The minimum distance between the wall constituting the outlet 104 and the spiral wall 102 of the stationary disk is defined as L, and the range of L is: 0mm ≤ L ≤ 5mm. When the diameter of the outlet 104 remains constant, the size of the thick-walled portion 203 and the range of L satisfy the following relationship: the smaller the range of L, the smaller the size of the thick-walled portion 203. In the preferred embodiment, the size of L is 0. Both the stationary spiral wall 102 of the stationary scroll 1 and the moving spiral wall 202 of the moving scroll 2 have helical lines along their spiral paths. The helical lines of the two can mesh with each other to compress the refrigerant gas. The provision of the thick-walled portion 203 causes a corresponding change in the helical lines of the stationary spiral wall 102 and the moving spiral wall 202. Simply put, when the thick-walled portion 203 is provided on one side of the moving spiral wall 202 in the thickness direction, the helical line of the moving spiral wall 202 protrudes slightly compared to when there is no thick-walled portion 203. Therefore, the helical line of the stationary spiral wall 102 must also be changed accordingly so that the stationary scroll 1 and the moving scroll 2 can mesh and compress the refrigerant gas after the addition of the thick-walled portion 203. The smaller the size of the thick-walled portion 203, the smaller the change in the helical profile of the stationary scroll 1 and the moving scroll 2, and the smaller the change in the overall size, shape and weight of the moving scroll helical wall 202, thereby minimizing the impact on the dynamic balance of the stationary scroll 1 and the moving scroll 2 during meshing.

[0036] More specifically, the thick-walled portion 203 includes a first thick-walled portion 2031 and a second thick-walled portion 2032, and the outlet 104 includes a first outlet 1041 and a second outlet 1042. In the first engagement state, at least a portion of the first outlet 1041 is directly opposite the end face of the first thick-walled portion 2031, a portion of the first sealing gasket 4 is located in the first thick-walled portion 2031, and the projections of the first sealing gasket 4 and the first outlet 1041 on the projection plane are spaced apart; at least a portion of the second outlet 1042 is directly opposite the end face of the second thick-walled portion 2032, a portion of the first sealing gasket 4 is located in the second thick-walled portion 2032, and the first sealing gasket 4 and the second outlet 1042 are spaced apart from their projections on the projection plane.

[0037] The enthalpy-increasing channel 103 includes a first channel 1031 and a second channel 1032. The enthalpy-increasing channel 103 includes an inlet 105, which includes a first inlet 1051 and a second inlet 1052. The first channel 1031 can connect the first outlet 1041 and the first inlet 1051, and the second channel 1032 can connect the second outlet 1042 and the second inlet 1052.

[0038] In the second engagement state, the compression chamber 3 includes a first compression chamber 301 and a second compression chamber 302, with a first outlet 1041 communicating with the first compression chamber 301 and a second outlet 1042 communicating with the second compression chamber 302.

[0039] The enthalpy-increasing channel 103 includes two channels, and the corresponding thick-walled portion 203 also includes two channels. The first channel 1031 and the second channel 1032 are respectively connected to the first compression chamber 301 and the second compression chamber 302, thereby guiding the injected gas to different positions in the compression chamber 3. On the one hand, this can make the compressor's heating capacity more significantly under low-temperature heat pump conditions. On the other hand, it can also balance the pressure introduced into the compression chamber 3. At the same time, since the injected gas is introduced to different positions in the compression chamber 3, and the injected gas is an intermediate pressure gas, the pressure is greater than the gas that just enters the compression chamber 3, but less than the gas that exits the compression chamber 3. Therefore, introducing the injected gas to different positions in the compression chamber 3 can reduce the occurrence of pressure imbalance compared to introducing it to the same position in the compression chamber 3.

[0040] The moving disk spiral wall 202 includes a first wall 2021 and a second wall 2022. In the thickness direction of the moving disk spiral wall 202, the first wall 2021 and the second wall 2022 are located on both sides of the moving disk spiral wall 202. The first thick wall portion 2031 is integral with the moving disk spiral wall 202, and the second thick wall portion 2032 is integral with the moving disk spiral wall 202.

[0041] The first thick-walled portion 2031 and the second thick-walled portion 2032 correspond to the first outlet 1041 and the second outlet 1042 located at different positions, respectively. The aforementioned statement that the thick-walled portion 203 is closer to the outlet 104 than the first sealing gasket 4 refers to the first thick-walled portion 2031 being closer to the first outlet 1041 and the second thick-walled portion 2032 being closer to the second outlet 1042, thereby reducing the impact on the sealing effect of the first sealing gasket 4. During the engagement of the moving scroll 2 with the stationary scroll 1, the first sealing gasket 4 will contact and abut against multiple points on the stationary end plate 101. When the first sealing gasket 4 engages at the positions of the first outlet 1041 and the second outlet 1042, there is a risk of it floating. Therefore, the correspondingly provided first thick-walled portions 2031 and 2032 can respectively keep the first sealing gasket 4 away from the first outlet 1041 and the second outlet 1042 at their respective positions, reducing the risk of the first sealing gasket 4 being blown away and floating by the injected gas.

[0042] An exhaust port is located at the center of the stationary scroll end plate 101, which connects to the compression chamber 3 to discharge compressed refrigerant gas. The first outlet 1041 and the second outlet 1042 are symmetrically arranged relative to the exhaust port, and the first thick-walled portion 2031 and the second thick-walled portion 2032 are also symmetrically distributed accordingly. This arrangement allows the injected gas to be directed to different positions within the compression chamber 3, and the symmetrical distribution of the first thick-walled portion 2031 and the second thick-walled portion 2032 results in a more balanced and uniform mass distribution of the moving scroll 2. Furthermore, it reduces the manufacturing difficulty of the moving scroll 2.

[0043] The stationary vortex disk 1 includes a third wall 106 and a fourth wall 107. In the thickness direction of the stationary vortex disk 102, the third wall 106 and the fourth wall 107 are located on both sides of the stationary vortex disk 102. On the projection plane perpendicular to the axial direction of the moving vortex disk 2, the spiral path projected by the first wall 2021 is defined as the first spiral line, and the spiral path projected by the third wall 106 is defined as the third spiral line. The first spiral line and the third spiral line can mesh. The spiral path projected by the second wall 2022 is defined as the second spiral line, and the spiral path projected by the fourth wall 107 is defined as the fourth spiral line. The second spiral line and the fourth spiral line can mesh.

[0044] On the projection plane perpendicular to the axial direction of the moving scroll 2, the first thick-walled portion 2031 and the second thick-walled portion 2032 are generally arc-shaped, so that the spiral walls of the stationary scroll 1 and the moving scroll 2 can mesh during the process of meshing and compressing the refrigerant gas.

[0045] The top of the moving disc tooth 2020 has a first sealing groove 2023, and the first sealing gasket 4 is at least partially located in the first sealing groove 2023; the stationary disc spiral wall 102 has a second sealing groove 1020, and the compressor includes a second sealing gasket 6, which is at least partially located in the second sealing groove 1023, and the second sealing gasket 6 can abut against the moving disc end plate 201.

[0046] The first sealing groove 2023 provides the connection and installation point for the first sealing gasket 4, and also has the function of limiting the first sealing gasket 4. Since the moving scroll 2 moves in multiple directions during the meshing motion, the first sealing groove 203 can limit the possibility of the first sealing gasket 4 shifting.

[0047] Similarly, the second sealing groove 1020 also has the same function for the second sealing gasket 6, in which the second sealing gasket 6 also plays a partial sealing role for the compression chamber 3. Together with the sealing effect of the first sealing gasket 4 and the meshing between the stationary scroll 1 and the moving scroll 2, the compression chamber 3 is sealed.

[0048] 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.

[0049] 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 scroll (1) and a moving scroll (2), and includes a compression chamber (3) located at least partially between the stationary scroll (1) and the moving scroll (2). The stationary scroll (1) includes a stationary end plate (101) and a stationary spiral wall (102), and the moving scroll (2) includes a moving end plate (201) and a moving spiral wall (202). The stationary spiral wall (102) and the moving spiral wall (202) are engaged. The compressor includes a first sealing gasket (4), the moving disc spiral wall (202) includes the top of the moving disc teeth (2020), the first sealing gasket (4) is connected to the top of the moving disc teeth (2020), and the first sealing gasket (4) can contact the stationary disc end plate (101); The stationary plate (101) has an enthalpy-increasing channel (103), which is connected to the compression chamber (3); The enthalpy-increasing channel (103) includes an outlet (104). The surface perpendicular to the axial direction of the moving vortex (2) is defined as the projection surface. The stationary vortex (1) and the moving vortex (2) are in an engaged state. In the engaged state, the projection of the first sealing gasket (4) on the projection surface and the projection of the outlet (104) on the projection surface are both spaced apart.

2. The compressor according to claim 1, characterized in that, The moving disc spiral wall (202) includes a thick-walled portion (203). When the meshing point of the moving disc spiral wall (202) and the stationary disc spiral wall (102) is close to or located at the outlet (104), the side wall of the thick-walled portion (203) contacts the stationary disc spiral wall (102), and the projection of the outlet (104) on the projection surface has a gap with the projection of the first sealing gasket (4) on the projection surface.

3. The compressor according to claim 2, characterized in that, The engagement state includes a first engagement state, in which the thick-walled portion (203) contacts the stationary disc spiral wall (102), and in the axial direction of the moving volute (2), the end face of the thick-walled portion (203) faces the outlet (104); the end face of the thick-walled portion (203) can contact the wall constituting the outlet (104); The engagement state also includes a second engagement state, in which the enthalpy-increasing channel (103) is connected to the compression chamber (3); compared to the first engagement state, the thick-walled portion (203) is further away from the outlet (104) in the second engagement state.

4. The compressor according to claim 3, characterized in that, The thick-walled portion (203) and the moving disc spiral wall (202) are integral parts. The stationary disc spiral wall (102) includes the stationary disc tooth root portion (1021). The outlet (104) is located on the stationary disc end plate (101) near the stationary disc tooth root portion (1021).

5. The compressor according to claim 4, characterized in that, The thick-walled portion (203) includes a first thick-walled portion (2031) and a second thick-walled portion (2032), and the outlet (104) includes a first outlet (1041) and a second outlet (1042). In the first engagement state, at least a portion of the first outlet (1041) is directly opposite the end face of the first thick-walled portion (2031), the first sealing gasket (4) is partially located on the first thick-walled portion (2031), and the projections of the first sealing gasket (4) and the first outlet (1041) on the projection plane are spaced apart. At least a portion of the second outlet (1042) is directly opposite the end face of the second thick-walled portion (2032), the first sealing gasket (4) is partially located on the second thick-walled portion (2032), and the first sealing gasket (4) and the second outlet (1042) are spaced apart from their projections on the projection plane.

6. The compressor according to claim 5, characterized in that, The enthalpy-increasing channel (103) includes a first channel (1031) and a second channel (1032). The enthalpy-increasing channel (103) includes an inlet (105), which includes a first inlet (1051) and a second inlet (1052). The first channel (1031) can connect the first outlet (1041) and the first inlet (1051), and the second channel (1032) can connect the second outlet (1042) and the second inlet (1052).

7. The compressor according to claim 5 or 6, characterized in that, In the second engagement state, the compression chamber (3) includes a first compression chamber (301) and a second compression chamber (302), the first outlet (1041) is connected to the first compression chamber (301), and the second outlet (1042) is connected to the second compression chamber (302).

8. The compressor according to claim 5, characterized in that, The first thick-walled portion (2031) and the moving disk spiral wall (202) are integral parts, and the second thick-walled portion (2032) and the moving disk spiral wall (202) are integral parts.

9. The compressor according to claim 1 or 8, characterized in that, The top of the moving disc tooth (2020) has a first sealing groove (2023), and the first sealing gasket (4) is at least partially located in the first sealing groove (2023).

10. The compressor according to claim 9, characterized in that, The stationary disc spiral wall (102) has a second sealing groove (1020), and the compressor includes a second sealing gasket (6), which is at least partially located in the second sealing groove (1020) and can abut against the moving disc end plate (201).

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