CN217976597U - Pump body for hermetic compressor and hermetic compressor - Google Patents
Pump body for hermetic compressor and hermetic compressor Download PDFInfo
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- CN217976597U CN217976597U CN202222064609.8U CN202222064609U CN217976597U CN 217976597 U CN217976597 U CN 217976597U CN 202222064609 U CN202222064609 U CN 202222064609U CN 217976597 U CN217976597 U CN 217976597U
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Abstract
The utility model relates to a pump body and airtight compressor for airtight compressor. The pump body for the closed compressor comprises a cylinder, an upper bearing, a lower bearing, a crankshaft and a rotor piston; the end face, facing the upper bearing, of the cylinder is provided with a plurality of heat insulation grooves along the axial direction of the cylinder, and the heat insulation grooves are arranged at intervals along the circumferential direction of the cylinder; the end face of the cylinder and/or the end face of the upper bearing are/is provided with a plurality of oil guide grooves, and the oil guide grooves are correspondingly communicated with the heat insulation grooves and extend to the edge of the end face of the cylinder. Compared with a metal solid cylinder structure in the prior art, the heat transfer can be effectively reduced by the design, the heat insulation groove is communicated with the outside of the pump body, refrigerating machine oil flowing outside the pump body can enter the heat insulation groove, and the heat conductivity of the machine oil is far smaller than that of metal, so that the energy efficiency loss of a compressor caused by the heat transfer is effectively avoided by the design of the refrigerating machine oil heat insulation groove.
Description
Technical Field
The utility model relates to a compressor technical field especially relates to a pump body and airtight compressor for airtight compressor.
Background
In the prior art, a rotary compressor generally comprises an upper cover, a lower cover, a housing, a motor fixed inside the housing to provide rotary power, and a body for compressing a refrigerant, wherein a pump body comprises an upper bearing, a lower bearing, a cylinder, a crankshaft, a rotor piston, a slider, and a valve plate assembly, the upper bearing, the lower bearing, and the cylinder form an independent refrigerant compression working space, the rotor piston is sleeved on the crankshaft and movably disposed in the refrigerant compression working space, the slider is movably disposed in a slider groove of the cylinder, and an end of the slider abuts against an outer circumferential surface of the rotor piston to divide the refrigerant compression working space into a suction side and a discharge side; the motor is fixedly connected with the crankshaft and drives the crankshaft to rotate; the crankshaft drives the rotor piston to rotate in the refrigerant compression working space and compress the refrigerant, so that the refrigerant is changed from low-temperature low-pressure gas into high-temperature high-pressure gas.
In the operation process of the compressor, as the existing cylinder and the bearing are mostly metal solid bodies, the heat conducting performance of the cylinder and the bearing is stronger, the high-temperature and high-pressure refrigerant gas exhausted after being compressed and on the exhaust side can transmit heat to the suction side through the cylinder, the upper bearing and the lower bearing, the sucked low-temperature and low-pressure refrigerant gas is heated, and when the refrigerant gas is heated and heated, the density of the refrigerant gas is reduced, the refrigerant gas in the pump body is expanded, the volume fraction is reduced, and the performance is reduced.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing a pump body for airtight compressor, it has simple structure, thermal-insulated effectual and energy consumption loss advantage such as little.
A pump body for a closed compressor comprises a cylinder, an upper bearing, a lower bearing, a crankshaft and a rotor piston; the cylinder is provided with an accommodating hole in a penetrating manner along the central axis direction thereof, and the upper bearing and the lower bearing are respectively detachably mounted at two ends of the accommodating hole and enclose to form an independent refrigerant compression working space; the crankshaft is rotatably arranged on the upper bearing, the cylinder and the lower bearing in a penetrating way around a shaft, and the rotor piston is sleeved on the crankshaft and movably arranged in the refrigerant compression working space; the end face, facing the upper bearing, of the cylinder is provided with a plurality of heat insulation grooves along the axial direction of the cylinder, and the heat insulation grooves are arranged at intervals along the circumferential direction of the cylinder; the end face of the cylinder and/or the end face of the upper bearing are provided with a plurality of oil guide grooves, and the oil guide grooves are correspondingly communicated with the heat insulation grooves and extend to the edge of the end face of the cylinder along the radial direction of the cylinder or the upper bearing.
The embodiment of the utility model provides a pump body for airtight compressor, it utilizes the space that the fluting formed through seting up the heat dam at the cylinder, for the solid cylinder structure of metal among the prior art, this design can effectively reduce heat transfer, and the setting of oil groove is led in further cooperation is linked together heat dam and pump body outside for the refrigerator oil of the outside flow of the pump body can get into extremely the heat dam, because the thermal conductivity of machine oil is less than the metal far away, the efficiency loss that leads to the compressor because of heat transfer is effectively avoided in the design of refrigerator oil heat dam.
Furthermore, lead the oil groove and be located the heat insulating groove is kept away from the cylinder or the one side of the center pin of upper bearing, and each the heat insulating groove corresponds and sets up at least one and leads the oil groove.
Furthermore, the thickness of the cylinder is H, the depth of the heat insulation groove is H1, the depth of the oil guide groove is H2, H/2 is more than or equal to H1 and less than H, and H2 is more than or equal to 0 and less than H/2.
Further, the heat insulation groove is an arc-shaped groove extending along the circumferential direction of the cylinder, the outer diameter of the cylinder is R1, the inner diameter of the accommodating hole is R2, the distance from a point of the heat insulation groove in the extending direction to the central axis of the cylinder is R, the width of the heat insulation groove is d1, (R1 + R2)/2 < R1,0 < d1 < (R1-R2)/2.
Further, the heat insulation groove is a linear groove, the extending direction of the heat insulation groove is perpendicular to the radial direction of the cylinder, the outer diameter of the cylinder is R1, the inner diameter of the accommodating hole is R2, the minimum distance from a point of the heat insulation groove in the extending direction to the central axis of the cylinder is f, the width of the heat insulation groove is d1, R2+2mm < f, and 0 < d1 < (R1-R2)/2.
Further, the width of the oil guide groove is d2, the arc length of the heat insulation groove is A, d2 is more than 0 and less than A, or the length of the heat insulation groove is L, d2 is more than 0 and less than L.
Furthermore, the oil guide groove is arranged on the end face of the upper bearing, the minimum distance between the oil guide groove and the central shaft of the upper bearing is k, R1+2mm < k < R +0.5d1, or R1+2mm < k < f +0.5d1.
Additionally, the embodiment of the utility model provides a still provide an airtight compressor, it includes above the pump body for airtight compressor.
Airtight compressor, its improvement through pump body structure can effectively reduce the efficiency loss that the heat loss brought.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of a pump body structure for a hermetic compressor according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of the cylinder according to embodiment 1 of the present invention;
fig. 3 is a schematic cross-sectional view of a partial structure of the cylinder according to embodiment 1 of the present invention;
fig. 4 is a schematic cross-sectional view of the structure of the cylinder and the upper bearing according to embodiment 1 of the present invention;
fig. 5 is a schematic structural view of the cylinder according to embodiment 2 of the present invention;
fig. 6 is a schematic cross-sectional view of a partial structure of the cylinder according to embodiment 2 of the present invention;
fig. 7 is a schematic structural view of the cylinder according to embodiment 3 of the present invention;
fig. 8 is a schematic cross-sectional view of a partial structure of the cylinder according to embodiment 3 of the present invention;
fig. 9 is a schematic bottom view of the upper bearing structure according to embodiment 3 of the present invention;
fig. 10 is a schematic cross-sectional view of the upper bearing structure according to embodiment 3 of the present invention;
fig. 11 is a schematic cross-sectional view of the structure of the cylinder and the upper bearing according to embodiment 3 of the present invention;
fig. 12 is a schematic cross-sectional view of the cylinder and the upper bearing structure according to embodiment 5 of the present invention.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-4, fig. 1 is a schematic structural view of a pump body for a hermetic compressor according to embodiment 1 of the present invention, fig. 2 is a schematic structural view of a cylinder according to embodiment 1 of the present invention, fig. 3 is a schematic sectional view of a partial structure of the cylinder according to embodiment 1 of the present invention, fig. 4 is a schematic structural view of the cylinder and the upper bearing according to embodiment 1 of the present invention, as shown in the drawings, embodiment 1 of the present invention provides a pump body for a hermetic compressor, which includes a sectional view of the cylinder 1, the upper bearing 2, the lower bearing 3, the crankshaft 4, and a rotor piston (not shown in the drawings); the cylinder 1 is provided with an accommodating hole 11 along the direction of the central axis thereof in a penetrating manner, and the upper bearing 2 and the lower bearing 3 are respectively detachably mounted at two ends of the accommodating hole 11 and enclose to form an independent refrigerant compression working space; the crankshaft 4 can be rotatably arranged on the upper bearing 2, the cylinder 1 and the lower bearing 3 in a penetrating way around a shaft, and the rotor piston is sleeved on the crankshaft 4 and is movably arranged in the refrigerant compression working space; the end face, facing the upper bearing 2, of the cylinder 1 is provided with a plurality of heat insulation grooves 5 along the axial direction of the end face, and the heat insulation grooves 5 are arranged at intervals along the circumferential direction of the cylinder 1; the end face of the cylinder 1 and/or the end face of the upper bearing 2 are/is provided with a plurality of oil guide grooves 6, the oil guide grooves 6 are correspondingly communicated with the heat insulation groove 5 and extend to the edge of the end face of the cylinder 1 along the radial direction of the cylinder 1 or the upper bearing 2.
The embodiment 1 the pump body for airtight compressor, it is through offering the heat dam 5 at cylinder 1, utilize the space that the fluting formed, for the solid cylinder 1 structure of metal among the prior art, this design can effectively reduce heat transfer, further the cooperation leads the setting of oil groove 6, be linked together heat dam 5 and pump body outside, make the refrigerator oil that the pump body outside flows can get into to heat dam 5, because the thermal conductivity of machine oil is less than metallic far away, the efficiency loss that leads to the compressor because of heat transfer is effectively avoided in the design of refrigerator oil heat dam 5.
Specifically, the oil guide groove 6 is located on one side of the heat insulation groove 5 away from the central axis of the cylinder 1 or the upper bearing 2, and each heat insulation groove 5 is correspondingly provided with at least one oil guide groove 6, in this embodiment, 3 heat insulation grooves 5 are provided, each heat insulation groove 5 is correspondingly provided with one oil guide groove 6, in other embodiments, the numbers of the heat insulation grooves 5 and the oil guide grooves can be adjusted according to the actual size of the cylinder and the size of the heat insulation grooves, and each heat insulation groove 5 can also be correspondingly provided with more oil guide grooves 6.
The thickness of the cylinder 1 is H, the depth of the heat insulation groove 5 is H1, the depth of the oil guide groove 6 is H2, H/2 is more than or equal to H1 and less than H, and H2 is more than or equal to 0 and less than H/2.
As an alternative mode, in this embodiment, the heat-insulating slot 5 is an arc-shaped slot extending along the circumferential direction of the cylinder 1, the outer diameter of the cylinder 1 is R1, the inner diameter of the housing hole 11 is R2, the distance from the point of the heat-insulating slot 5 in the extending direction to the central axis of the cylinder 1 is R, and the width thereof is d1, (R1 + R2)/2 < R1,0 < d1 < (R1-R2)/2.
The oil guide groove 6 is arranged on the end face, facing the upper bearing 2, of the cylinder 1, the width of the oil guide groove is d2, the arc length of the heat insulation groove 5 is A, and d2 is larger than 0 and smaller than A.
Example 2
Please refer to fig. 5-6, fig. 5 is the schematic diagram of the cylinder structure according to embodiment 2 of the present invention, fig. 6 is the schematic diagram of the sectional view of the cylinder local structure according to embodiment 2 of the present invention, embodiment 2 of the present invention provides a pump body for an airtight compressor, which is different from embodiment 1 in that: in this embodiment, the heat insulation slot 5 is a linear slot, the extending direction of which is perpendicular to the radial direction of the cylinder 1, the outer diameter of the cylinder 1 is R1, the inner diameter of the accommodating hole 11 is R2, the minimum distance from the point of the heat insulation slot 5 in the extending direction to the central axis of the cylinder 1 is f, the width thereof is d1, R2+2mm < f,0 < d1 < (R1-R2)/2; the width of the oil guide groove 6 is d2, the length of the heat insulation groove 5 is L, and d2 is more than 0 and less than L.
Example 3
Please refer to fig. 7-10, fig. 7 is the utility model discloses embodiment 3 the cylinder structure schematic diagram, fig. 8 is the utility model discloses embodiment 3 the cylinder local structure sectional view schematic diagram, fig. 9 is the utility model discloses embodiment 3 the upper bearing structure schematic diagram of looking up, fig. 10 is the utility model discloses embodiment 3 the upper bearing structure sectional view schematic diagram, fig. 11 is the utility model discloses embodiment 3 the cylinder with the upper bearing structure sectional view schematic diagram, the utility model discloses embodiment 3 provides a pump body for airtight compressor, its difference with embodiment 1 lies in: in the present embodiment, the oil guide groove 6 is provided in the end surface of the upper bearing 2, and the minimum distance from the central axis of the upper bearing 2 is k, R1+2mm < k < R +0.5d1.
Example 4
Embodiment 4 provides a pump body for airtight compressor, its difference with embodiment 2 lies in: in the present embodiment, the oil guide groove 6 is provided in the end surface of the upper bearing 2, and the minimum distance from the central axis of the upper bearing 2 is k, R1+2mm < k < f +0.5d1.
Example 5
Referring to fig. 12 and fig. 12 are schematic sectional views of the cylinder and the upper bearing structure according to embodiment 5 of the present invention, as shown in the figures, embodiment 5 of the present invention provides a pump body for an airtight compressor, which is different from embodiment 2 in that: in the present embodiment, oil guide grooves 6 are provided at corresponding positions on the end surface of the upper bearing 2 and the end surface of the cylinder 1.
Example 6
The embodiment 6 of the utility model provides a hermetic compressor, it includes embodiment 1-5 arbitrary the hermetic compressor pump body.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (8)
1. The utility model provides a pump body for airtight compressor which characterized in that: the device comprises a cylinder, an upper bearing, a lower bearing, a crankshaft and a rotor piston; the cylinder is provided with an accommodating hole in a penetrating manner along the central axis direction thereof, and the upper bearing and the lower bearing are respectively detachably mounted at two ends of the accommodating hole and enclose to form an independent refrigerant compression working space; the crankshaft is rotatably arranged on the upper bearing, the cylinder and the lower bearing in a penetrating way around a shaft, and the rotor piston is sleeved on the crankshaft and movably arranged in the refrigerant compression working space; the end face, facing the upper bearing, of the cylinder is provided with a plurality of heat insulation grooves along the axial direction of the cylinder, and the heat insulation grooves are arranged at intervals along the circumferential direction of the cylinder; the end face of the cylinder and/or the end face of the upper bearing are/is provided with a plurality of oil guide grooves, and the oil guide grooves are correspondingly communicated with the heat insulation grooves and extend to the edge of the end face of the cylinder.
2. The pump body for a hermetic compressor according to claim 1, wherein: the oil guide groove is positioned on one side, away from the cylinder or the central shaft of the upper bearing, of the heat insulation groove, and each heat insulation groove is correspondingly provided with at least one oil guide groove.
3. The pump body for a hermetic compressor according to claim 2, wherein: the thickness of the cylinder is H, the depth of the heat insulation groove is H1, the depth of the oil guide groove is H2, H/2 is larger than H1 and smaller than H, and H2 is larger than or equal to 0 and smaller than H/2.
4. The pump body for a hermetic compressor according to claim 3, wherein: the heat insulation groove is the arc wall that sets up along the circumference extension of cylinder, the external diameter of cylinder is R1, the internal diameter of holding the hole is R2, the distance of its ascending point of extending direction of heat insulation groove to the cylinder center pin is R, the width of heat insulation groove is d1, (R1 + R2)/2 < R1,0 < d1 < (R1-R2)/2.
5. The pump body for a hermetic compressor according to claim 3, characterized in that: the heat insulation groove is a linear groove, the extending direction of the heat insulation groove is perpendicular to the radial direction of the cylinder, the outer diameter of the cylinder is R1, the inner diameter of the accommodating hole is R2, the minimum distance from a point of the heat insulation groove in the extending direction to the central axis of the cylinder is f, the width of the heat insulation groove is d1, R2+2mm < f, and 0 < d1 < (R1-R2)/2.
6. The pump body for a hermetic compressor according to claim 4 or 5, characterized in that: the width of the oil guide groove is d2, the arc length of the heat insulation groove is A, d2 is more than 0 and less than A, or the length of the heat insulation groove is L, and d2 is more than 0 and less than L.
7. The pump body for a hermetic compressor according to claim 6, characterized in that: the oil guide groove is formed in the end face of the upper bearing, the minimum distance between the oil guide groove and the central shaft of the upper bearing is k, R1+2mm is more than k and less than R +0.5d1, or R1+2mm is more than k and less than f and more than 0.5d1.
8. A hermetic compressor characterized in that: a pump body for a hermetic compressor comprising the pump body according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222064609.8U CN217976597U (en) | 2022-08-05 | 2022-08-05 | Pump body for hermetic compressor and hermetic compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222064609.8U CN217976597U (en) | 2022-08-05 | 2022-08-05 | Pump body for hermetic compressor and hermetic compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217976597U true CN217976597U (en) | 2022-12-06 |
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ID=84256065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222064609.8U Active CN217976597U (en) | 2022-08-05 | 2022-08-05 | Pump body for hermetic compressor and hermetic compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217976597U (en) |
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2022
- 2022-08-05 CN CN202222064609.8U patent/CN217976597U/en active Active
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