CN111022321B - Pump components, fluid machinery and heat exchange equipment - Google Patents
Pump components, fluid machinery and heat exchange equipment Download PDFInfo
- Publication number
- CN111022321B CN111022321B CN201911158523.8A CN201911158523A CN111022321B CN 111022321 B CN111022321 B CN 111022321B CN 201911158523 A CN201911158523 A CN 201911158523A CN 111022321 B CN111022321 B CN 111022321B
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- oil
- pump body
- piston
- section
- body assembly
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- 239000012530 fluid Substances 0.000 title claims abstract description 42
- 230000013011 mating Effects 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 22
- 230000001050 lubricating effect Effects 0.000 claims description 21
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 description 39
- 230000000694 effects Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/60—Shafts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Reciprocating Pumps (AREA)
Abstract
本发明提供了一种泵体组件、流体机械及换热设备。其中，泵体组件包括气缸套、气缸及活塞，气缸可转动地设置在气缸套内，活塞可滑动地设置在气缸内，泵体组件还包括：转轴，包括配合段，配合段穿设在活塞内以带动活塞运动，配合段的外表面具有平行设置的两个第一配合平面，第一配合平面与活塞接触，以使转轴带动活塞运动；转轴具有轴向通油孔，各第一配合平面上具有第一油槽，第一油槽与轴向通油孔连通，且第一油槽的延伸方向垂直于转轴的延伸方向。本发明有效地解决了现有技术中转缸压缩机的活塞与转轴之间易发生卡涩现象而影响转缸压缩机的正常运行的问题。
The present invention provides a pump body assembly, a fluid machinery and a heat exchange device. The pump body assembly includes a cylinder sleeve, a cylinder and a piston. The cylinder is rotatably arranged in the cylinder sleeve, and the piston is slidably arranged in the cylinder. The pump body assembly also includes: a rotating shaft, including a matching section, the matching section is passed through the piston to drive the piston to move, and the outer surface of the matching section has two first matching planes arranged in parallel, and the first matching planes are in contact with the piston so that the rotating shaft drives the piston to move; the rotating shaft has an axial oil hole, and each first matching plane has a first oil groove, which is connected to the axial oil hole, and the extension direction of the first oil groove is perpendicular to the extension direction of the rotating shaft. The present invention effectively solves the problem that the piston and the rotating shaft of the rotary cylinder compressor in the prior art are prone to jamming, which affects the normal operation of the rotary cylinder compressor.
Description
Technical Field
The invention relates to the technical field of pump body components, in particular to a pump body component, a fluid machine and heat exchange equipment.
Background
At present, a rotary cylinder piston compressor belongs to a compressor with a brand new structure, and is essentially a compressor which is obtained by combining a main structure of a piston compressor with a main structure of a rotor compressor by adopting a cross slide block structure principle. The existing rotary cylinder piston compressor comprises a rotating shaft, a piston sleeved outside the rotating shaft and a cylinder sleeved outside the piston. When the rotating shaft rotates, the piston is driven to perform circular motion, the distance between the piston and the center of the cylinder is in 0~e, the rotating shaft and the cylinder are eccentrically assembled, and the rotating shaft drives the cylinder to rotate through the piston. Because the rotating shaft and the air cylinder have eccentric relation, when in operation, the rotating shaft and the air cylinder respectively rotate around the respective axes, and the piston reciprocates relative to the air cylinder, so that the air compression is realized.
However, in the prior art, in the process of reciprocating motion of the piston relative to the rotating shaft, a clamping phenomenon is easy to occur between the piston and the rotating shaft, so that normal operation of the rotary cylinder piston compressor is affected, and energy consumption of the rotary cylinder compressor is increased.
Disclosure of Invention
The invention mainly aims to provide a pump body assembly, a fluid machine and heat exchange equipment, so as to solve the problem that the normal operation of a rotary cylinder compressor is affected due to the fact that a clamping phenomenon is easy to occur between a piston and a rotating shaft of the rotary cylinder compressor in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a pump body assembly including a cylinder liner, a cylinder and a piston, the cylinder being rotatably disposed in the cylinder liner, the piston being slidably disposed in the cylinder, the pump body assembly further including a rotation shaft including a fitting section penetrating the piston to move the piston, an outer surface of the fitting section having two first fitting planes disposed in parallel, the first fitting planes being in contact with the piston to move the piston by the rotation shaft, the rotation shaft having an axial oil passage hole, each first fitting plane having a first oil groove, the first oil groove being in communication with the axial oil passage hole, and an extending direction of the first oil groove being perpendicular to an extending direction of the rotation shaft.
The first arc-shaped surface and the second arc-shaped surface are oppositely arranged and are arranged between the two first matching planes, wherein the first end of the first oil groove extends to the first arc-shaped surface, and/or the second end of the first oil groove extends to the second arc-shaped surface.
Further, each first matching plane is further provided with a second oil groove, the second oil grooves are communicated with the axial oil through holes and the first oil grooves, the first oil grooves are communicated with the axial oil through holes through the second oil grooves, and the extending direction of the second oil grooves is arranged at a first included angle with the extending direction of the first oil grooves.
The second oil groove is provided with an oil passing hole at the bottom, and the oil passing hole is communicated with the axial oil passing hole through the radial oil passing hole so that lubricating liquid discharged from the oil passing hole flows into the second oil groove.
Further, the radial oil through holes and the oil through holes are coaxially arranged, or the central axis direction of the radial oil through holes and the central axis direction of the oil through holes are mutually parallel.
Further, the orthographic projection of the radial oil through hole on the first matching plane is a first projection, the orthographic projection of the oil through hole on the first matching plane is a second projection, and the first projection is in the second projection.
Further, the extending direction of the radial oil through hole and the extending direction of the oil through hole form a second included angle.
Further, the first oil groove is a plurality of, and a plurality of first oil grooves are arranged along the central axis direction of the rotating shaft at intervals.
Further, the piston has a second mating surface mating with the first mating surface, at least one of the second mating surfaces having an oil reservoir therein, the oil reservoir in communication with the first oil reservoir and/or the second oil reservoir.
The oil storage tank further comprises a first tank section, wherein the extending direction of the first tank section is consistent with the extending direction of the rotating shaft, and/or a second tank section, the extending direction of the second tank section and the extending direction of the rotating shaft are mutually perpendicular, and/or a third tank section, a third included angle is formed between the extending direction of the third tank section and the extending direction of the rotating shaft, and the third included angle is smaller than 90 degrees.
Further, the matching section is a prismatic structure, and two surfaces of the prismatic structure, which are arranged in parallel with each other, are two first matching planes.
Further, the pump body assembly further comprises an upper flange, the rotating shaft further comprises a long shaft section, the long shaft section is connected with the matching section and penetrates through the upper flange, the air cylinder is provided with a first extension part extending towards the upper flange, the pump body assembly further comprises an upper limiting plate, the upper limiting plate is arranged between the upper flange and the air cylinder sleeve, the first extension part extends into the upper limiting plate, and the upper limiting plate and the first extension part are limited and stopped to prevent the air cylinder from displacing in the radial direction relative to the upper limiting plate.
Further, the rotating shaft further comprises a short shaft section, the short shaft section is connected with the long shaft section through a matching section, the pump body assembly further comprises a lower flange, the short shaft section is arranged in the lower flange in a penetrating mode, the air cylinder is provided with a second extending part extending towards the lower flange, the pump body assembly further comprises a lower limiting plate, the lower limiting plate is arranged between the lower flange and the air cylinder sleeve, the second extending part extends into the lower limiting plate, and the lower limiting plate and the second extending part are limited and stopped to prevent the air cylinder from displacing in the radial direction relative to the lower limiting plate.
According to another aspect of the present invention, there is provided a fluid machine comprising a housing and a pump body assembly located within the housing, the pump body assembly being the pump body assembly described above.
According to another aspect of the present invention there is provided a heat exchange device comprising a fluid machine as described above.
By applying the technical scheme of the invention, the rotating shaft rotates around the central axis of the rotating shaft, the matching section of the rotating shaft drives the piston to move, the piston drives the cylinder to rotate around the central axis of the cylinder, and the piston simultaneously reciprocates relative to the cylinder and the rotating shaft, so that the suction, compression and exhaust actions of the pump body assembly are realized. Thus, in the operation process of the pump body assembly, the first matching plane is in contact with the piston, so that the rotating shaft drives the piston to move. The lubrication liquid enters the rotating shaft through the axial oil through hole, and the lubrication liquid entering the axial oil through hole flows into the first oil groove so as to lubricate between the first matching plane and the piston, avoid the jamming phenomenon between the piston and the rotating shaft, and further solve the problem that the normal operation of the rotary cylinder compressor is affected due to the jamming phenomenon easily occurring between the piston and the rotating shaft of the rotary cylinder compressor in the prior art. Simultaneously, the extending direction of first oil groove is perpendicular to the extending direction of pivot to make the lubrication fluid can flow in the piston, and then reduced the frictional force between piston and the pivot, realized good antifriction effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 shows an exploded view of an embodiment of a pump body assembly according to the present invention;
FIG. 2 shows a cross-sectional view of the pump body assembly of FIG. 1;
FIG. 3 shows a schematic perspective view of a shaft of the pump body assembly of FIG. 1;
FIG. 4 shows a bottom view of the spindle of FIG. 3;
FIG. 5 shows a cross-sectional view of the spindle of FIG. 3;
FIG. 6 shows an enlarged schematic view of the spindle of FIG. 5 at B;
FIG. 7 is a schematic perspective view of the pump body assembly of FIG. 1 after the shaft and piston assembly;
FIG. 8 shows a cross-sectional view of the shaft and piston of FIG. 7 taken in the A-A direction;
FIG. 9 shows a partial cross-sectional view of the piston of FIG. 7;
FIG. 10 shows a cross-sectional view of a cylinder of the pump body assembly of FIG. 1, and
Fig. 11 shows a top view of the cylinder of fig. 10.
Wherein the above figures include the following reference numerals:
10. The cylinder sleeve, 20, the cylinder, 21, the first extension part, 22, the second extension part, 30, the piston, 31, the second matching plane, 311, the first groove section, 312, the second groove section, 313, the third groove section, 40, the rotating shaft, 41, the matching section, 411, the first matching plane, 4111, the first oil groove, 4112, the second oil groove, 4112a, the oil passing hole, 412, the first arc-shaped surface, 413, the second arc-shaped surface, 414, the radial oil passing hole, 42, the long shaft section, 43, the short shaft section, 44, the axial oil passing hole, 50, the upper flange, 60, the lower flange, 70, the upper limiting plate, 80, the lower limiting plate, 91, the first cavity, 92, and the second cavity.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.
In the present invention, unless otherwise indicated, the terms of orientation such as "upper and lower" are used generally with respect to the direction shown in the drawings or with respect to the vertical, vertical or gravitational direction, and likewise, for ease of understanding and description, "left and right" are generally with respect to the left and right shown in the drawings, and "inner and outer" are intended to mean inner and outer with respect to the outline of the components themselves, although the above terms of orientation are not intended to limit the present invention.
The application provides a pump body assembly, a fluid machine and heat exchange equipment, and aims to solve the problem that in the prior art, the normal operation of a rotary cylinder compressor is affected due to the fact that a clamping phenomenon is easy to occur between a piston and a rotating shaft of the rotary cylinder compressor.
As shown in fig. 1 to 3, the pump body assembly includes a cylinder liner 10, a cylinder 20, and a piston 30, the cylinder 20 is rotatably disposed in the cylinder liner 10, the piston 30 is slidably disposed in the cylinder 20, and the pump body assembly further includes a rotation shaft 40. The rotating shaft 40 includes a mating section 41, the mating section 41 is disposed in the piston 30 in a penetrating manner to drive the piston 30 to move, and the outer surface of the mating section 41 has two first mating planes 411 disposed in parallel, and the first mating planes 411 contact with the piston 30 to drive the rotating shaft 40 to drive the piston 30 to move. The rotating shaft 40 is provided with axial oil through holes 44, each first matching plane 411 is provided with a first oil groove 4111, the first oil groove 4111 is communicated with the axial oil through holes 44, and the extending direction of the first oil groove 4111 is perpendicular to the extending direction of the rotating shaft 40.
By applying the technical scheme of the embodiment, the rotating shaft 40 rotates around the central axis of the rotating shaft 40, the matching section 41 of the rotating shaft 40 drives the piston 30 to move, the piston 30 drives the cylinder 20 to rotate around the central axis of the cylinder 20, and then the piston 30 simultaneously reciprocates relative to the cylinder 20 and the rotating shaft 40, so that the suction, compression and exhaust actions of the pump body assembly are realized. Thus, during operation of the pump body assembly, the first mating surface 411 contacts the piston 30 such that the shaft 40 moves the piston 30. The lubricating liquid enters the rotating shaft 40 through the axial oil through hole 44, and the lubricating liquid entering the axial oil through hole 44 flows into the first oil groove 4111 so as to lubricate between the first matching plane 411 and the piston 30, avoid the jamming phenomenon between the piston 30 and the rotating shaft 40, and further solve the problem that the normal operation of the rotary cylinder compressor is affected due to the jamming phenomenon easily occurring between the piston and the rotating shaft of the rotary cylinder compressor in the prior art. Meanwhile, the extending direction of the first oil groove 4111 is perpendicular to the extending direction of the rotating shaft 40, so that the lubricating liquid can flow in the piston 30, friction between the piston 30 and the rotating shaft 40 is reduced, and a good antifriction effect is achieved.
As shown in fig. 3, the mating segment 41 has a cylindrical structure, and an outer peripheral surface of the cylindrical structure includes two first mating planes 411, a first arcuate surface 412 and a second arcuate surface 413. The first arcuate surface 412 and the second arcuate surface 413 are disposed opposite and between the two first mating surfaces 411. Wherein a first end of the first oil groove 4111 extends to the first arcuate surface 412, and a second end of the first oil groove 4111 extends to the second arcuate surface 413. In this way, the length of the first oil groove 4111 is increased as much as possible, so that the first matching plane 411 has sufficient lubrication fluid, friction between the piston 30 and the rotating shaft 40 is further reduced, and lubrication effect of the lubrication fluid is improved.
Specifically, in the process of reciprocating movement of the piston 30 relative to the rotating shaft 40, a first chamber 91 is formed between the first arc surface 412 and the inner wall of the piston 30, a second chamber 92 is formed between the second arc surface 413 and the inner wall of the piston 30, the above arrangement of the first oil groove 4111 can realize communication between the first chamber 91 and the second chamber 92, the lubricating fluid entering the first oil groove 4111 can enter the first chamber 91 and the second chamber 92 through two ends thereof respectively, and the lubricating fluid can quickly circulate in the first chamber 91 and the second chamber 92, so that on one hand, good antifriction and lubrication can be obtained between the contact surface of the piston 30 and the first mating plane 411, further energy consumption in the operation process of the pump body assembly is reduced, on the other hand, the normal movement of the piston 30 is influenced by the generation of lubricating fluid pressure (oil pressure) in the first chamber 91 or the second chamber 92 is prevented, and the operation reliability of the pump body assembly is improved.
In other embodiments not shown in the drawings, only the first end of the first oil groove extends to the first arcuate surface. Like this, above-mentioned setting makes the length of first oil groove increase as far as possible to have abundant lubricating liquid on making first cooperation plane, further reduced the frictional force between piston and the pivot, promoted the lubrication effect of lubricating liquid.
In other embodiments not shown in the drawings, only the second end of the first oil groove extends to the second arcuate surface. Like this, above-mentioned setting makes the length of first oil groove increase as far as possible to have abundant lubricating liquid on making first cooperation plane, further reduced the frictional force between piston and the pivot, promoted the lubrication effect of lubricating liquid.
As shown in fig. 3, 7 and 8, each first mating surface 411 further has a second oil groove 4112, the second oil groove 4112 communicates with the axial oil through hole 44 and the first oil groove 4111, and the first oil groove 4111 communicates with the axial oil through hole 44 through the second oil groove 4112. The extending direction of the second oil groove 4112 is set at a first included angle with the extending direction of the first oil groove 4111. In this way, the above arrangement can further increase the amount of lubricant on the first mating surface 411, thereby achieving good lubrication between the piston 30 and the mating section 41, and reducing the energy consumption of the pump body assembly.
Specifically, the first included angle is 90 °, the first oil groove 4111 and the second oil groove 4112 are disposed in a crossing manner and are mutually communicated, and the lubrication fluid entering the first oil groove 4111 can flow into the second oil groove 4112, so that the first matching plane 411 is provided with sufficient lubrication fluid, and the lubrication effect of the lubrication fluid is improved.
Optionally, the first end of the second oil groove 4112 extends to the first end surface of the columnar structure, and the second end of the second oil groove 4112 extends to the second end surface of the columnar structure, so that the length of the second oil groove 4112 is increased as much as possible, so that the first mating plane 411 has sufficient lubrication fluid, friction between the piston 30 and the rotating shaft 40 is further reduced, and lubrication effect of the lubrication fluid is improved.
As shown in fig. 3 to 6, the mating segment 41 has a radial oil passage hole 414, and the radial oil passage hole 414 communicates with the axial oil passage hole 44. The groove bottom of the second oil groove 4112 has an oil passing hole 4112a, and the oil passing hole 4112a communicates with the axial oil passing hole 44 through the radial oil passing hole 414 so that the lubrication fluid discharged from the oil passing hole 4112a flows into the second oil groove 4112. Like this, in the above-mentioned setting assurance gets into the lubrication fluid in the axial oil hole 44 and can get into first oil groove 4111 and second oil groove 4112 smoothly, promoted the smoothness nature of the circulation of lubrication fluid in the pump body subassembly, and then guarantee that lubrication fluid can carry out antifriction, lubrication to the contact surface of first cooperation plane 411 and piston 30. Meanwhile, the structure is simple, easy to process and realize, and the processing cost of the matching section 41 is reduced.
Specifically, each first mating surface 411 has two second oil grooves 4112, two radial oil holes 414 are disposed in one-to-one correspondence with the two second oil grooves 4112, the lubrication fluid entering the axial oil holes 44 enters the two radial oil holes 414 respectively, and the lubrication fluid in each radial oil hole 414 enters the oil passing hole 4112a of the corresponding second oil groove 4112 and enters the second oil groove 4112 through the oil passing hole 4112 a. After that, the lubrication fluid entering the second oil groove 4112 flows into the first oil groove 4111, so that the first mating surface 411 has sufficient lubrication fluid thereon.
As shown in fig. 6, the central axis direction of the radial oil passage hole 414 and the central axis direction of the oil passage hole 4112a are disposed in parallel with each other. Thus, the radial oil through holes 414 and the oil through holes 4112a are easier and simpler to process, and the processing cost of the matching section 41 is reduced.
Specifically, the two radial oil holes 414 are arranged in parallel, so that the internal stress of the matching section 41 is more uniform, the structural strength of the matching section 41 is improved, and the service lives of the matching section 41 and the rotating shaft 40 are prolonged. The central axis direction of radial oil through hole 414 sets up with first cooperation plane 411 mutually perpendicular, and the groove width of second oil groove 4112 is greater than radial oil through hole 414's internal diameter, and then makes the structure profile of the junction of second oil groove 4112 and radial oil through hole 414 simpler to reduce structure profile sharpness, promoted the structural strength of cooperation section 41, promoted the structural reliability of cooperation section 41.
The positional relationship between the central axis direction of the radial oil hole 414 and the central axis direction of the oil passing hole 4112a is not limited thereto. Alternatively, the radial oil passing hole 414 is coaxially provided with the oil passing hole 4112 a.
As shown in fig. 6, the orthographic projection of the radial oil through hole 414 on the first mating plane 411 is a first projection, the orthographic projection of the oil through hole 4112a on the first mating plane 411 is a second projection, and the first projection is within the second projection. Specifically, the radial oil through hole 414 has an inner diameter D1, the oil through hole 4112a has an inner diameter D2, and the requirement that D2 is smaller than D1 is met, so that the intersection of the radial oil through hole 414 and the oil through hole 4112a forms a simple structural profile, burrs generated in the machining process of the matching section 41 are reduced, the burr polishing difficulty is reduced, and the use reliability of the rotating shaft 40 is improved.
In other embodiments, which are not shown in the drawings, the extending direction of the radial oil through hole and the extending direction of the oil through hole form a second included angle. Alternatively, the two radial oil holes are coaxially arranged. Like this, above-mentioned setting makes the staff to the processing of two radial oil through holes easier, simple and convenient, has reduced the processing degree of difficulty, has shortened processing cycle.
Alternatively, the first oil grooves 4111 are plural, and the plural first oil grooves 4111 are disposed at intervals along the central axis direction of the rotating shaft 40. In this way, the above arrangement further ensures that sufficient lubrication fluid is provided between the first mating surface 411 and the piston 30, thereby reducing friction between the piston 30 and the rotating shaft 40, reducing wear of the piston 30 and the rotating shaft 40, and prolonging the service life of the pump body assembly.
As shown in fig. 9, the piston 30 has second engagement surfaces 31 engaged with the first engagement surfaces 411, and at least one of the second engagement surfaces 31 has an oil reservoir therein, which communicates with the first oil reservoir 4111 and the second oil reservoir 4112. Thus, the lubrication fluid entering the first oil groove 4111 and the second oil groove 4112 can be stored in the oil storage groove, and even if the supply of the lubrication fluid is insufficient, the first fitting plane 411 and the second fitting plane 31 can have sufficient lubrication fluid therebetween, thereby improving the lubrication effect of the lubrication fluid.
As shown in fig. 9, the oil reservoir includes a first reservoir section 311, a second reservoir section 312, and a third reservoir section 313. Wherein, the extending direction of the first slot section 311 is consistent with the extending direction of the rotating shaft 40. The extending direction of the second slot section 312 is perpendicular to the extending direction of the rotating shaft 40. The extending direction of the third groove section 313 and the extending direction of the rotating shaft 40 form a third included angle, and the third included angle is smaller than 90 °. Thus, during the reciprocating movement of the piston 30 relative to the rotating shaft 40, the lubrication fluid in the first oil groove 4111 can enter the second groove section 312, and the lubrication fluid in the second oil groove 4112 can enter the first groove section 311 and the third groove section 313, so that the lubrication fluid is stored in the first groove section 311, the second groove section 312 and the third groove section 313, and sufficient lubrication fluid is ensured between the first matching plane 411 and the second matching plane 31.
In other embodiments not shown in the drawings, the oil reservoir comprises only a first reservoir section, the extension direction of which coincides with the extension direction of the rotation shaft. Thus, in the reciprocating motion process of the piston relative to the rotating shaft, the lubricating liquid in the second oil groove can enter the first groove section, so that the lubricating liquid is stored in the first groove section, and further, sufficient lubricating liquid is ensured between the first matching plane and the second matching plane.
In other embodiments not shown in the drawings, the oil reservoir comprises only the second reservoir section, the extension direction of which coincides with the extension direction of the rotation shaft. Thus, in the reciprocating motion process of the piston relative to the rotating shaft, the lubricating liquid in the first oil groove can enter the second groove section, so that the lubricating liquid is stored in the second groove section, and sufficient lubricating liquid is ensured between the first matching plane and the second matching plane.
In other embodiments not shown in the drawings, the oil storage tank only includes a third tank section, and a third included angle is formed between the extending direction of the third tank section and the extending direction of the rotating shaft. Thus, in the reciprocating motion process of the piston relative to the rotating shaft, the lubricating liquid in the second oil groove can enter the third groove section, so that the lubricating liquid is stored in the third groove section, and sufficient lubricating liquid is ensured between the first matching plane and the second matching plane.
In other embodiments not shown in the drawings, the mating segments are prismatic structures, and two surfaces of the prismatic structures disposed parallel to each other are two first mating planes.
As shown in fig. 1 to 3, 10 and 11, the pump body assembly further includes an upper flange 50, the rotating shaft 40 further includes a long shaft section 42, the long shaft section 42 is connected with the mating section 41, and is disposed in the upper flange 50 in a penetrating manner, the air cylinder 20 has a first extension portion 21 extending toward the upper flange 50, and the pump body assembly further includes an upper limiting plate 70. The upper limiting plate 70 is disposed between the upper flange 50 and the cylinder liner 10, and the first extension portion 21 extends into the upper limiting plate 70, and the upper limiting plate 70 and the first extension portion 21 limit and stop, so as to prevent the cylinder 20 from displacing in a radial direction relative to the upper limiting plate 70. Like this, go up limiting plate 70 can support cylinder 20, avoids cylinder 20 to take place radial direction displacement, guarantees that cylinder 20 rotates around its central axis all the time, guarantees that pump body subassembly can realize normal breathing in, compression and exhaust action.
Specifically, the upper flange 50 is fixedly coupled to the cylinder liner 10, and the upper stopper plate 70 is coupled to the upper flange 50 by fasteners. The upper limiting plate 70 is provided with a first through hole into which the first extending part 21 extends, and the first extending part 21 extends into the first through hole and is limited and stopped with the inner wall of the first through hole, so that the upper limiting plate 70 limits the air cylinder 20.
In this embodiment, the first extension portion 21 has a circular ring structure, and the circular ring structure is coaxially disposed with the cylinder 20. The structure of the first extension portion 21 is not limited to this. Alternatively, the first extension 21 may be a plurality of circular arcs, each of which is disposed coaxially with the cylinder 20.
As shown in fig. 1 to 3 and 10, the rotating shaft 40 further includes a short shaft section 43, the short shaft section 43 is connected with the long shaft section 42 through a mating section 41, the pump body assembly further includes a lower flange 60, the short shaft section 43 is disposed in the lower flange 60 in a penetrating manner, the air cylinder 20 has a second extension 22 extending toward the lower flange 60, and the pump body assembly further includes a lower limiting plate 80. The lower limiting plate 80 is disposed between the lower flange 60 and the cylinder liner 10, and the second extension portion 22 extends into the lower limiting plate 80, and the lower limiting plate 80 and the second extension portion 22 limit the stop, so as to prevent the cylinder 20 from being displaced in a radial direction relative to the lower limiting plate 80. Like this, lower limiting plate 80 can support cylinder 20, avoids cylinder 20 to take place radial direction displacement, guarantees that cylinder 20 rotates around its central axis all the time, guarantees that pump body subassembly can realize normal breathing in, compression and exhaust action.
Specifically, the lower flange 60 is fixedly connected with the cylinder liner 10, and the lower limiting plate 80 is connected with the lower flange 60 through fasteners. The lower limiting plate 80 is provided with a second through hole into which the second extending part 22 extends, and the second extending part 22 extends into the second through hole and is limited and stopped with the inner wall of the second through hole, so that the limiting of the lower limiting plate 80 to the air cylinder 20 is realized.
Specifically, the pump body assembly works as follows:
A variable volume chamber is formed between the cylinder 20 and the piston 30, the cylinder 20 and the rotary shaft 40 rotate about respective central axes, and the piston 30 reciprocates simultaneously with respect to the cylinder 20 and the rotary shaft 40. The reciprocating movement of the piston 30 relative to the cylinder 20 effects a periodic enlargement and reduction of the variable volume chamber. The cylinder 20 rotates with respect to the cylinder liner 10, and communication of the variable volume chamber with the intake passage or the exhaust passage, respectively, is achieved. The two compound movements realize the suction, compression and exhaust processes of the pump body assembly.
The application also provides a fluid machine (not shown) comprising a housing and a pump body assembly located in the housing, wherein the pump body assembly is the pump body assembly. Alternatively, the fluid machine is a compressor.
The application also provides a heat exchange device (not shown) comprising a fluid machine as described above. Optionally, the heat exchange device is an air conditioner.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
The rotary shaft rotates around the central axis of the rotary shaft, the matching section of the rotary shaft drives the piston to move, the piston drives the cylinder to rotate around the central axis of the cylinder, and then the piston simultaneously reciprocates relative to the cylinder and the rotary shaft, so that the suction, compression and exhaust actions of the pump body assembly are realized. Thus, in the operation process of the pump body assembly, the first matching plane is in contact with the piston, so that the rotating shaft drives the piston to move. The lubrication liquid enters the rotating shaft through the axial oil through hole, and the lubrication liquid entering the axial oil through hole flows into the first oil groove so as to lubricate between the first matching plane and the piston, avoid the jamming phenomenon between the piston and the rotating shaft, and further solve the problem that the normal operation of the rotary cylinder compressor is affected due to the jamming phenomenon easily occurring between the piston and the rotating shaft of the rotary cylinder compressor in the prior art. Simultaneously, the extending direction of first oil groove is perpendicular to the extending direction of pivot to make the lubrication fluid can flow in the piston, and then reduced the frictional force between piston and the pivot, realized good antifriction effect.
It will be apparent that the embodiments described above are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (14)
1. The utility model provides a pump body subassembly, includes cylinder liner (10), cylinder (20) and piston (30), cylinder (20) rotationally set up in cylinder liner (10), piston (30) slidable set up in cylinder (20), its characterized in that, pump body subassembly still includes:
The rotating shaft (40) comprises a matching section (41), the matching section (41) is arranged in the piston (30) in a penetrating way to drive the piston (30) to move, the outer surface of the matching section (41) is provided with two first matching planes (411) which are arranged in parallel, and the first matching planes (411) are in contact with the piston (30) so that the rotating shaft (40) drives the piston (30) to move;
The rotating shaft (40) is provided with axial oil through holes (44), each first matching plane (411) is provided with a first oil groove (4111), the first oil grooves (4111) are communicated with the axial oil through holes (44), and the extending direction of the first oil grooves (4111) is perpendicular to the extending direction of the rotating shaft (40);
The matching section (41) is of a columnar structure, the outer peripheral surface of the columnar structure comprises two first matching planes (411), a first arc-shaped surface (412) and a second arc-shaped surface (413), the first arc-shaped surface (412) and the second arc-shaped surface (413) are oppositely arranged and are arranged between the two first matching planes (411), wherein a first end of the first oil groove (4111) extends to the first arc-shaped surface (412), and/or a second end of the first oil groove (4111) extends to the second arc-shaped surface (413).
2. The pump body assembly according to claim 1, wherein each first matching plane (411) is further provided with a second oil groove (4112), the second oil grooves (4112) are communicated with the axial oil through holes (44) and the first oil grooves (4111), the first oil grooves (4111) are communicated with the axial oil through holes (44) through the second oil grooves (4112), and the extending direction of the second oil grooves (4112) and the extending direction of the first oil grooves (4111) form a first included angle.
3. The pump body assembly according to claim 2, wherein the matching section (41) is provided with a radial oil through hole (414), the radial oil through hole (414) is communicated with the axial oil through hole (44), the groove bottom of the second oil groove (4112) is provided with an oil through hole (4112 a), and the oil through hole (4112 a) is communicated with the axial oil through hole (44) through the radial oil through hole (414) so that lubricating liquid discharged from the oil through hole (4112 a) flows into the second oil groove (4112).
4. A pump body assembly according to claim 3, wherein the radial oil passing hole (414) is arranged coaxially with the oil passing hole (4112 a), or a central axis direction of the radial oil passing hole (414) and a central axis direction of the oil passing hole (4112 a) are arranged in parallel with each other.
5. The pump body assembly of claim 4, wherein an orthographic projection of the radial oil passage hole (414) on the first mating plane (411) is a first projection, and an orthographic projection of the oil passage hole (4112 a) on the first mating plane (411) is a second projection, the first projection being within the second projection.
6. A pump body assembly according to claim 3, wherein the radial oil through hole (414) is disposed at a second angle to the extending direction of the oil through hole (4112 a).
7. The pump body assembly according to claim 1, wherein the first oil grooves (4111) are plural, and the plural first oil grooves (4111) are disposed at intervals along the central axis direction of the rotating shaft (40).
8. Pump body assembly according to claim 2, wherein the piston (30) has a second mating plane (31) mating with the first mating plane (411), at least one of the second mating planes (31) having a reservoir in communication with the first reservoir (4111) and/or the second reservoir (4112).
9. The pump body assembly of claim 8, wherein the oil reservoir comprises:
A first groove section (311), the extending direction of the first groove section (311) is consistent with the extending direction of the rotating shaft (40), and/or
A second groove section (312), the extending direction of the second groove section (312) is perpendicular to the extending direction of the rotating shaft (40), and/or
And a third groove section (313), wherein a third included angle is formed between the extending direction of the third groove section (313) and the extending direction of the rotating shaft (40), and the third included angle is smaller than 90 degrees.
10. Pump body assembly according to claim 1, wherein the mating section (41) is a prismatic structure, the two surfaces of which are arranged parallel to each other being two of the first mating planes (411).
11. Pump body assembly according to claim 1, further comprising an upper flange (50), the spindle (40) further comprising a long shaft section (42), the long shaft section (42) being connected to the mating section (41), threaded into the upper flange (50), the cylinder (20) having a first extension (21) extending towards the upper flange (50), the pump body assembly further comprising:
The upper limiting plate (70) is arranged between the upper flange (50) and the cylinder sleeve (10), the first extension part (21) stretches into the upper limiting plate (70), and the upper limiting plate (70) and the first extension part (21) are limited and stopped to prevent the cylinder (20) from displacing relative to the upper limiting plate (70) in the radial direction.
12. Pump body assembly according to claim 11, wherein the spindle (40) further comprises a stub shaft section (43), the stub shaft section (43) being connected with the long shaft section (42) by the mating section (41), the pump body assembly further comprising a lower flange (60), the stub shaft section (43) being threaded into the lower flange (60), the cylinder (20) having a second extension (22) extending towards the lower flange (60), the pump body assembly further comprising:
the lower limiting plate (80) is arranged between the lower flange (60) and the cylinder sleeve (10), the second extension part (22) stretches into the lower limiting plate (80), and the lower limiting plate (80) and the second extension part (22) are limited and stopped, so that the cylinder (20) is prevented from displacing relative to the lower limiting plate (80) in the radial direction.
13. A fluid machine comprising a housing and a pump body assembly within the housing, the pump body assembly being as claimed in any one of claims 1 to 12.
14. A heat exchange device comprising the fluid machine of claim 13.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911158523.8A CN111022321B (en) | 2019-11-22 | 2019-11-22 | Pump components, fluid machinery and heat exchange equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911158523.8A CN111022321B (en) | 2019-11-22 | 2019-11-22 | Pump components, fluid machinery and heat exchange equipment |
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| CN111022321A CN111022321A (en) | 2020-04-17 |
| CN111022321B true CN111022321B (en) | 2025-01-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114688029B (en) | 2020-12-29 | 2026-02-13 | 珠海格力电器股份有限公司 | Pump body components and fluid machinery |
| CN112797002A (en) * | 2020-12-29 | 2021-05-14 | 珠海格力电器股份有限公司 | Pump body assembly and fluid machine |
| CN116241472A (en) * | 2021-12-07 | 2023-06-09 | 珠海格力电器股份有限公司 | Fluid Machinery and Heat Exchange Equipment |
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| JPH055488A (en) * | 1991-06-28 | 1993-01-14 | Toshiba Corp | Scroll type compressor |
| JPH08100775A (en) * | 1994-09-29 | 1996-04-16 | Isao Suzuki | Pump having structure provided with guide pin in blade |
| CN104454021B (en) * | 2014-11-15 | 2019-11-15 | 南通金鼎天轮动力科技有限公司 | Fluid dynamic with runner piston synchronous cyclotron mechanism is mechanical |
| CN105570130B (en) * | 2016-02-16 | 2018-11-27 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor pump structure and compressor |
| CN110131093A (en) * | 2019-04-18 | 2019-08-16 | 南通金鼎天轮动力科技有限公司 | Runner piston synchronous cyclotron mechanism |
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| CN104583599A (en) * | 2012-08-20 | 2015-04-29 | 大金工业株式会社 | Rotary compressor |
| CN107035693A (en) * | 2017-05-08 | 2017-08-11 | 珠海格力电器股份有限公司 | Drive spindle and compressor |
| CN109595157A (en) * | 2018-12-17 | 2019-04-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Turn the pump body structure of the cylinder piston compressor and turns the cylinder piston compressor |
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