CN107288881B

CN107288881B - Pump body assembly, fluid machine and heat exchange equipment

Info

Publication number: CN107288881B
Application number: CN201710550200.8A
Authority: CN
Inventors: 杨森; 杜忠诚; 徐嘉; 任丽萍; 孔令超
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2017-07-06
Filing date: 2017-07-06
Publication date: 2020-03-13
Anticipated expiration: 2037-07-06
Also published as: CN107288881A

Abstract

The invention provides a pump body assembly, a fluid machine and heat exchange equipment. Wherein, pump body subassembly includes: an upper flange; a lower flange; the cylinder is clamped between the upper flange and the lower flange; the roller is rotatably arranged in the cylinder, a first sliding groove is formed in the upper end of the roller, and a second sliding groove is formed in the lower end of the roller; the bottom end of the long shaft penetrates through the upper flange and is slidably arranged in the first sliding groove, the long shaft and the air cylinder are eccentrically arranged, and the eccentric distance e is fixed; the top end of the short shaft penetrates through the lower flange and is slidably arranged in the second sliding groove, the short shaft and the cylinder are eccentrically arranged, the eccentric distance e is fixed, the short shaft and the long shaft are eccentrically arranged, the eccentric distance 2e is fixed, and a sliding included angle is formed between the extending direction of the first sliding groove and the extending direction of the second sliding groove. The invention effectively solves the problems of complex structure and difficult assembly of the pump body component in the prior art.

Description

Pump body assembly, fluid machine and heat exchange equipment

Technical Field

The invention relates to the technical field of pump bodies, in particular to a pump body assembly, a fluid machine and heat exchange equipment.

Background

In the prior art, the pump body assembly adopts a piston structure, and the position of the center of mass of a rotating shaft of the pump body assembly and the position of the center of mass of an air cylinder are changed in the moving process of the rotating shaft of the pump body assembly and the air cylinder. The motor drives the crankshaft to output power, and the crankshaft drives the piston to reciprocate in the cylinder to compress gas or liquid to do work so as to achieve the purpose of compressing the gas or the liquid.

Conventional piston pump body assemblies suffer from a number of drawbacks: the pump body component drives one or more pistons to work through a crank connecting rod mechanism, and the structure is complex and the assembly is difficult. In addition, the crankshaft and the piston are subjected to large lateral force, and the piston is easily worn, so that the sealing performance of the piston is reduced.

Disclosure of Invention

The invention mainly aims to provide a pump body assembly, a fluid machine and heat exchange equipment, and aims to solve the problems of complex structure and difficult assembly of the pump body assembly 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: an upper flange; a lower flange; the cylinder is clamped between the upper flange and the lower flange; the roller is rotatably arranged in the cylinder, a first sliding groove is formed in the upper end of the roller, and a second sliding groove is formed in the lower end of the roller; the bottom end of the long shaft penetrates through the upper flange and is slidably arranged in the first sliding groove, the long shaft and the air cylinder are eccentrically arranged, and the eccentric distance e is fixed; the top end of the short shaft penetrates through the lower flange and is slidably arranged in the second sliding groove, the short shaft and the cylinder are eccentrically arranged, the eccentric distance e is fixed, the short shaft and the long shaft are eccentrically arranged, the eccentric distance 2e is fixed, and a sliding included angle is formed between the extending direction of the first sliding groove and the extending direction of the second sliding groove.

Further, the extending direction of the first sliding groove is perpendicular to the extending direction of the second sliding groove.

Further, the rollers are cylindrical rollers.

Further, the inner hole of the cylinder is oval.

Further, the cylinder has a slide groove, and the pump body assembly further comprises a slide which is slidably arranged in the slide groove and is kept in abutting joint with the outer peripheral surface of the roller.

Further, the cylinder has an intake passage and an exhaust passage, which are respectively located on both sides of the vane.

Further, a first connecting line l between the air inlet channel and the center point of the cylinder takes the plane where the sliding sheet is located as a reference plane₁A first angle a with the reference plane is less than or equal to 50 degrees.

Further, the plane where the sliding sheet is located is taken as a reference planeSecond line l between exhaust passage and center point of cylinder₂And a second included angle B with the reference plane is less than or equal to 50 degrees.

Further, a second connecting line l between the exhaust channel and the center point of the cylinder takes the plane where the sliding sheet is located as a reference plane₂To the first connection line l₁The third included angle C between the first and second angles is less than or equal to 90 degrees.

Further, the head part of the slide sheet is provided with an arc-shaped surface; the tail part of the sliding sheet is provided with a sliding sheet spring.

Further, the long shaft comprises a long shaft cylindrical section and a first sliding section which are sequentially connected along the length direction of the long shaft, the long shaft cylindrical section is pivotally connected with the upper flange, the first sliding section is provided with two first sliding matching surfaces which are oppositely arranged, and the two first sliding matching surfaces are in sliding fit with the groove wall of the first sliding groove.

Furthermore, a first lubricating groove is formed in the first sliding matching surface, the first lubricating groove is communicated with the long shaft center hole of the long shaft through a first oil passing hole, and the first oil passing hole is communicated with the outer surface of the long shaft and the inner surface of the long shaft center hole.

Furthermore, the short shaft comprises a short shaft cylindrical section and a second sliding section which are sequentially connected along the length direction of the short shaft, the short shaft cylindrical section is in pivot connection with the lower flange, the second sliding section is provided with two second sliding matching surfaces which are oppositely arranged, and the two second sliding matching surfaces are in sliding fit with the groove wall of the second sliding groove.

Further, a second lubricating groove is formed in the second sliding matching surface, the second lubricating groove is communicated with the short shaft center hole of the short shaft through a second oil passing hole, and the second oil passing hole is communicated with the outer surface of the short shaft and the inner surface of the short shaft center hole.

Further, the first sliding groove is communicated with the second sliding groove through the axial through hole.

Further, be provided with the cylinder gas vent on the terminal surface of cylinder in order being regarded as exhaust passage, go up the flange and have the flange gas vent with cylinder gas vent intercommunication, pump body subassembly still includes the exhaust valve subassembly, and the exhaust valve subassembly sets up in flange gas vent department.

Further, the up end of upper flange has the mounting groove, and exhaust valve subassembly sets up in the mounting groove, and exhaust valve subassembly still includes: an exhaust valve plate; the baffle plate is covered on the exhaust valve sheet; and the exhaust fastener sequentially penetrates through one end of the baffle plate and one end of the exhaust valve plate to be connected with the upper flange.

Further, the inner bore of the cylinder is non-circular.

According to another aspect of the present invention, there is provided a fluid machine including the pump body assembly described above.

According to another aspect of the present invention, there is provided a heat exchange device comprising the fluid machine described above.

By applying the technical scheme of the invention, in the operation process of the pump body assembly, the long shaft drives the roller to move through the first sliding groove, so that the roller reciprocates in the extending direction of the first sliding groove relative to the long shaft, meanwhile, the second sliding groove at the lower end of the roller is in sliding fit with the top end of the short shaft, the second sliding groove drives the short shaft to move, and the roller reciprocates in the extending direction of the second sliding groove relative to the short shaft. Because the extending direction in first groove that slides and the extending direction in second groove that slides between have the contained angle that slides, then the roller carries out the extending direction in first groove that slides and the extending direction's in second groove superimposed movement to adjust the volume between cylinder and the roller, guarantee pump body subassembly can normal operating.

In the application, the eccentric distance between the long shaft and the short shaft is 2e, the bottom end of the long shaft and the top end of the short shaft are arranged on the roller, and the roller reciprocates relative to the long shaft and the short shaft. Therefore, compared with the structure that the piston and the piston sleeve are combined in the prior art, the structure of the pump body assembly is simpler and more compact, and meanwhile, the pump body assembly is easier to assemble. In addition, the volume of the pump body assembly in this application is littleer to reduce the processing cost of pump body assembly.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows an exploded schematic view of an embodiment of a pump block assembly according to the present invention; and

FIG. 2 shows a cross-sectional view of the pump body assembly of FIG. 1;

FIG. 3 shows a top view of the pump body assembly of FIG. 1;

FIG. 4 is a perspective view of the major axis of the pump body assembly of FIG. 1;

FIG. 5 shows a cross-sectional view of the long axis of FIG. 4;

FIG. 6 shows a perspective view of the rollers of the pump block assembly of FIG. 1;

FIG. 7 shows a top view of the roller of FIG. 6;

FIG. 8 shows a cross-sectional view of the roller of FIG. 6;

FIG. 9 shows a perspective view of the stub shaft of FIG. 1;

FIG. 10 shows a front view of the stub shaft of FIG. 9;

FIG. 11 shows a cross-sectional view of the stub shaft of FIG. 9;

FIG. 12 shows a schematic perspective view of the cylinder of FIG. 1;

FIG. 13 shows a top view of the cylinder of FIG. 12;

FIG. 14 shows a cross-sectional view of the cylinder of FIG. 13 taken along line D-D;

FIG. 15 shows a perspective view of the upper flange of FIG. 1;

FIG. 16 shows a top view of the upper flange of FIG. 15;

FIG. 17 shows a cross-sectional view E-E of the upper flange of FIG. 16;

FIG. 18 shows a perspective view of the lower flange of FIG. 1;

FIG. 19 shows a cross-sectional view of the lower flange of FIG. 18;

FIG. 20 shows a perspective view of the slider of FIG. 1;

FIG. 21 shows a front view of the slider of FIG. 20;

FIG. 22 is a schematic view showing an assembly process of the pump body assembly of FIG. 1;

FIG. 23 is a schematic view of the pump body assembly of FIG. 1 in operation during inhalation;

FIG. 24 is a schematic view of the pump body assembly of FIG. 1 at the completion of inspiration;

FIG. 25 is a schematic view of the pump block assembly of FIG. 1 in an operational condition prior to the start of compression and deflation;

FIG. 26 is a schematic view of the pump block assembly of FIG. 1 during compression and venting;

FIG. 27 is a schematic view of the pump block assembly of FIG. 1 at the end of venting;

FIG. 28 shows a schematic perspective view of the vent valve assembly of FIG. 1;

fig. 29 shows a cross-sectional view of an embodiment of a compressor according to the present invention; and

figure 30 shows a functional schematic of the pump block assembly of figure 1.

Wherein the figures include the following reference numerals:

10. an upper flange; 11. a flange exhaust port; 12. mounting grooves; 20. a lower flange; 30. a cylinder; 31. a slide groove; 32. an air intake passage; 33. an exhaust passage; 40. a roller; 41. a first sliding groove; 42. a second sliding groove; 43. an axial through hole; 50. a long axis; 51. a long axis cylindrical section; 52. a first slip section; 521. a first slip fit surface; 522. a first lubrication groove; 53. a long axis center hole; 54. a first oil passing hole; 60. a minor axis; 61. a short axis cylindrical section; 62. a second slip section; 621. a second slip fit surface; 622. a second lubrication groove; 63. a short axis center hole; 64. a second oil passing hole; 70. sliding blades; 71. a reference plane; 72. an arc-shaped surface; 73. a sliding leaf spring; 80. a vent valve assembly; 81. an exhaust valve plate; 82. a baffle plate; 83. an exhaust fastener; 91. a first fastener; 92. a second fastener; 100. a dispenser component; 110. a housing assembly; 120. a motor assembly; 130. a pump body assembly; 140. an upper cover assembly; 150. lower cover and mounting panel.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, 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.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

The invention provides a pump body assembly, a fluid machine and heat exchange equipment, aiming at solving the problems of complex structure and difficult assembly of the pump body assembly in the prior art, wherein the heat exchange equipment adopts the pump body assembly.

As shown in fig. 1 to 3, the pump body assembly of the present embodiment includes an upper flange 10, a lower flange 20, a cylinder 30, a roller 40, a long shaft 50, and a short shaft 60. Wherein the cylinder 30 is clamped between the upper flange 10 and the lower flange 20. The roller 40 is rotatably disposed in the cylinder 30, and the upper end of the roller 40 is provided with a first sliding groove 41 and the lower end of the roller 40 is provided with a second sliding groove 42. The bottom end of the long shaft 50 passes through the upper flange 10 and is slidably arranged in the first sliding groove 41, and the long shaft 50 and the cylinder 30 are eccentrically arranged and the eccentric distance e is fixed. The top end of the short shaft 60 penetrates through the lower flange 20 and is slidably arranged in the second sliding groove 42, the short shaft 60 and the cylinder 30 are eccentrically arranged, the eccentric distance e is fixed, the short shaft 60 and the long shaft 50 are eccentrically arranged, the eccentric distance 2e is fixed, and a sliding included angle is formed between the extending direction of the first sliding groove 41 and the extending direction of the second sliding groove 42.

By applying the technical scheme of the embodiment, during the operation of the pump body assembly, the long shaft 50 drives the roller 40 to move through the first sliding groove 41, so that the roller 40 reciprocates in the extending direction of the first sliding groove 41 relative to the long shaft 50, meanwhile, the second sliding groove 42 at the lower end of the roller 40 is in sliding fit with the top end of the short shaft 60, the second sliding groove 42 drives the short shaft 60 to move, and the roller 40 reciprocates in the extending direction of the second sliding groove 42 relative to the short shaft 60. Because a sliding included angle is formed between the extending direction of the first sliding groove 41 and the extending direction of the second sliding groove 42, the roller 40 performs the overlapping movement of the extending direction of the first sliding groove 41 and the extending direction of the second sliding groove 42, so that the volume between the cylinder 30 and the roller 40 is adjusted, and the normal operation of the pump body assembly is ensured.

In the present embodiment, the eccentric distance between the major axis 50 and the minor axis 60 is 2e, the bottom end of the major axis 50 and the top end of the minor axis 60 are disposed on the roller 40, and the roller 40 reciprocates relative to the major axis 50 and the minor axis 60. Therefore, compared with the structure that the piston and the piston sleeve are combined in the prior art, the structure of the pump body assembly is simpler and more compact, and meanwhile, the pump body assembly is easier to assemble. In addition, the volume of the pump body assembly in the embodiment is smaller, so that the processing cost of the pump body assembly is reduced.

In the pump body assembly of the present embodiment, since the roller 40 makes a linear motion rather than a rotational reciprocating motion with respect to the long axis 50 and the short axis 60, the eccentric mass is effectively reduced, and the lateral force applied to the long axis 50, the short axis 60, and the roller 40 is reduced, thereby reducing the abrasion of the roller 40 and improving the sealing performance of the roller 40. Meanwhile, the operation stability and reliability of the pump body assembly are ensured, the vibration risk of the pump body assembly is reduced, and the structure of the pump body assembly is simplified.

It should be noted that the normal operation of the pump body assembly can be ensured only when the eccentric distance between the short shaft 60 and the long shaft 50 is 2 e.

The long axis 50 is disposed eccentrically to the cylinder 30, and the short axis 60 is disposed eccentrically to the cylinder 30. The cylinder 30 installed in the above manner can ensure that the eccentric distance between the cylinder 30 and the short and

long axes

60 and 50 is e, and can also ensure that the eccentric distance between the long and

short axes

50 and 60 is 2e, so that the roller 40 has a characteristic of good motion stability.

In this embodiment, the upper flange 10 is fixed to the cylinder 30 by a first fastening member 91, and the lower flange 20 is fixed to the cylinder 30 by a second fastening member 92. Preferably, the first fastener 91 and/or the second fastener 92 are screws or bolts.

Optionally, the upper flange 10 is provided with four threaded holes, a circle formed by centers of the four threaded holes is eccentrically arranged with a shaft hole (a long shaft 50 passes through the shaft hole to be connected with the roller 40) of the upper flange 10, and the eccentric distance is e, which is the integral eccentric amount of the pump body assembly. Optionally, four first fastening members 91 are respectively inserted into the threaded holes of the upper flange 10 to connect with the cylinder 30.

As shown in fig. 18 and 19, optionally, the lower flange 20 is provided with four threaded holes, and a circle formed by the centers of the four threaded holes is concentrically arranged with the shaft hole of the lower flange 20 (the short shaft 60 passes through the shaft hole to be connected with the roller 40). Optionally, four second fasteners 92 are inserted through the threaded holes of the lower flange 20 to connect with the cylinder 30.

As shown in fig. 3, in the pump body assembly of the present embodiment, the extending direction of the first sliding groove 41 is perpendicular to the extending direction of the second sliding groove 42. Specifically, as the crosshead mechanism is formed among the roller 40, the long shaft 50, the cylinder 30 and the short shaft 60, the movement of the roller 40 and the cylinder 30 is stable and continuous, and the change of the volume between the cylinder 30 and the roller 40 is regular, so that the operation stability of the fluid machine is ensured, and the working reliability of the pump body assembly is improved.

The operation of the pump body assembly is described in detail below:

as shown in fig. 29, the pump body assembly in this embodiment is arranged using the phillips slider mechanism principle. Wherein the center line O of the long shaft 50₁An eccentric distance e from the center axis O of the cylinder 30, and a center line O of the short shaft 60₂An eccentric distance e from the center axis O of the cylinder 30, and a center line O of the long shaft 50₁To the centerline O of the minor axis 60₂The two are eccentrically arranged, the eccentric distance of the two is 2e, and the two respectively rotate around respective axes. When the long shaft 50 rotates, the roller 40 makes reciprocating linear sliding motion relative to the long shaft 50, meanwhile, the roller 40 drives the short shaft 60 to rotate, and the roller 40 makes reciprocating linear sliding motion relative to the short shaft 60, so that the air suction, compression and exhaust actions of the pump body assembly are realized. Thus, the roller 40 is disposed with respect to the axial center of the cylinder 30Operating within the range of the eccentric distance e, the stroke of the roller 40 is 2 e. The roller 40 corresponds to a slide in a crosshead mechanism, and the distances from the center of the roller 40 to the center of the long axis 50 and from the center of the roller 40 to the center of the short axis 60 correspond to two links l of the crosshead₃、l₄And the roller 40 is along the first link l₃The reciprocating direction and the sliding sheet are along the second connecting rod l₄The directions of the reciprocating motion are mutually vertical, thus forming the main body structure of the cross sliding vane principle.

Optionally, the first sliding groove 41 and/or the second sliding groove 42 are rectangular grooves.

As shown in fig. 6 to 8, in the pump body assembly of the present embodiment, the roller 40 is a cylindrical roller. Like this, the interior circle of cylinder 30 is circular structure, and roller 40 is cylindrical structure to make the motion of roller 40 in cylinder 30 more smooth and easy, continuous, improve pump body assembly's work efficiency.

In other embodiments not shown in the drawings, the bore of the cylinder is elliptical or non-circular. Wherein, non-circular structure refers to a smoothly connected (transitional) structure. Simultaneously, the extending direction of the first sliding groove and the extending direction of the second sliding groove are not perpendicular to each other, so that a cross-shaped sliding block mechanism is formed among the roller, the long shaft, the cylinder and the short shaft, the roller moves more smoothly and continuously in the cylinder, and the working efficiency of the pump body assembly is improved.

As shown in fig. 12 to 14, in the pump block assembly of the present embodiment, the cylinder 30 has a slide groove 31, and the pump block assembly further includes a slide 70, the slide 70 being slidably disposed in the slide groove 31 and held in abutment with the outer peripheral surface of the roller 40. Specifically, a crescent-shaped space is formed between the outer circumferential surface of the roller 40 and the inner circumferential surface of the cylinder 30, and the vane 70 is held in contact with the outer circumferential surface of the roller 40, so that the crescent-shaped space is divided into two chambers which do not communicate with each other. During the movement of the roller 40 in the cross-slide manner in the cylinder 30, the total volume of the two chambers in the cylinder 30 is not changed, but the respective volumes of the divided two chambers are changed, thereby realizing the suction, compression, and discharge operations of the pump body assembly.

As shown in fig. 12, in the pump body assembly of the present embodiment, the cylinder 30 has an intake passage 32 and an exhaust passage 33, and the intake passage 32 and the exhaust passage 33 are respectively located on both sides of the vane 70. Specifically, a cavity is formed between the outer circumferential surface of the roller 40 and the inner circumferential surface of the cylinder 30, and the cavity is divided into two chambers by the vane 70, and the two chambers are not communicated with each other. The roller 40 rotates for a circle, and the two chambers respectively complete the processes of air suction, compression and air exhaust.

Alternatively, the exhaust direction of the exhaust passage 33 is perpendicular to the horizontal plane in which the cylinder 30 is located. This prevents the gas discharged from the exhaust passage 33 from blowing straight to the housing outside the pump body assembly, and reduces noise generated in the exhaust process.

Specifically, the suction, compression and exhaust processes of the pump body assembly are described by taking one of the chambers as an example, as follows: when the chamber is communicated with the air inlet channel 32, air enters the cavity through the air inlet of the cylinder, and air suction is started (see fig. 23); the long shaft 50 continues to drive the roller 40 and the short shaft 60 to rotate clockwise, and when the chamber is separated from the air inlet passage 32, the whole air suction is finished, and the cavity is completely sealed and starts to compress (see fig. 24); the roller 40 continues to rotate, the gas is compressed continuously, and when the chamber is communicated with the exhaust passage 33, the gas enters the exhaust port of the cylinder through the exhaust passage 33 to start exhausting (see fig. 25); the roller 40 continues to rotate, continuously compresses and continuously exhausts until the chamber is completely separated from the exhaust passage 33, completing the whole processes of air suction, compression and exhaust (see fig. 26 and 27); the chamber is then rotated a certain angle and reconnected to the inlet passage 32 for the next cycle.

Note that the exhaust direction of the exhaust passage 33 is not limited to this. Alternatively, the exhaust direction of the exhaust passage 33 may be parallel to the horizontal plane in which the cylinder 30 is located, and may have a third angle C with the intake passage 32.

As shown in fig. 21 and 23 to 27, in the pump body assembly of the present embodiment, the plane where the vane 70 is located is taken as the reference plane 71, and the first connection line l from the intake passage 32 to the center point of the cylinder 30₁A first angle a with the reference plane 71 is equal to or less than 50 degrees.

As shown in fig. 21, 23 to 27, in this embodimentIn the pump body assembly of the embodiment, the plane of the slide 70 is taken as a reference plane 71, and a second connection line l from the exhaust passage 33 to the center point of the cylinder 30₂A second angle B with the reference plane 71 is equal to or less than 50 degrees.

As shown in fig. 21 and 23 to 27, in the pump body assembly of the present embodiment, the plane where the sliding vane 70 is located is taken as the reference plane 71, and the second connection line l from the exhaust passage 33 to the center point of the cylinder 30₂To the first connection line l₁The third included angle C between the first and second angles is less than or equal to 90 degrees. And the third included angle C is the sum of the first included angle A and the second included angle B.

It should be noted that the specific values of the first included angle a, the second included angle B, and the third included angle C are consistent with those of the rolling rotor type pump body assembly, and there is no fixed requirement, that is, the numerical values of the above included angles may be changed according to the inner diameter of the cylinder 30. It is generally only necessary to ensure a minimum sealing length and strength from the edge of the vane 70 to the edge of the intake passage 32 or the exhaust passage 33.

As shown in fig. 20 and 21, in the pump body assembly of the present embodiment, the head portion of the slide 70 has an arc-shaped face 72, and the tail portion of the slide 70 is provided with a slide spring 73. Thus, in the process that the roller 40 rotates in the cylinder 30, the arc-shaped surface 72 is tangent to the outer peripheral surface of the roller 40, so that the friction force between the slide sheet 70 and the roller 40 is reduced, the abrasion between the slide sheet 70 and the roller 40 is reduced, and the service life of the pump body assembly is prolonged. Specifically, a sliding-vane spring 73 is provided at the tail of the sliding vane 70, and under the elastic force of the sliding-vane spring 73, the arc-shaped surface 72 can be always tangent to the outer circumferential surface of the roller 40, thereby preventing the two chambers in the cavity from communicating with each other.

As shown in fig. 4 and 5, in the pump body assembly of the present embodiment, the long shaft 50 includes a long shaft cylindrical section 51 and a first sliding section 52 connected in sequence along the length direction thereof, the long shaft cylindrical section 51 is pivotally connected to the upper flange 10, the first sliding section 52 has two first sliding engagement surfaces 521 disposed oppositely, and the two first sliding engagement surfaces 521 are slidably engaged with the groove walls of the first sliding groove 41. Thus, the bottom end of the long shaft 50 passes through the upper flange 10 and then engages with the first sliding section 52.

Specifically, the motor of the pump body assembly drives the long shaft 50 to rotate along the central axis thereof, the long shaft cylindrical section 51 rotates relative to the upper flange 10, and at the same time, drives the first sliding section 52 to rotate, so that the two first sliding mating surfaces 521 of the first sliding section 52 are mated with the groove walls of the first sliding groove 41, so that the roller 40 is driven by the long shaft 50 to slide back and forth along the extending direction of the first sliding groove 41.

As shown in fig. 4 and 5, in the pump body assembly of the present embodiment, the first sliding engagement surface 521 is provided with a first lubrication groove 522, the first lubrication groove 522 communicates with the long-axis center hole 53 of the long axis 50 through the first oil passing hole 54, and the first oil passing hole 54 communicates the outer surface of the long axis 50 with the inner surface of the long-axis center hole 53. In this way, during rotation of the long shaft 50, the lubricating oil flows from the long shaft center hole 53 into the first lubricating groove 522 via the first oil passing hole 54, and the lubricating oil is ensured to smoothly flow from the long shaft center hole 53 into the first lubricating groove 522, thereby lubricating the first slip engagement surface 521. The arrangement ensures the oiling convenience of the long shaft center hole 53, and effectively avoids the abrasion caused by the excessive friction between the long shaft 50 and the roller 40, thereby improving the motion smoothness of the long shaft 50 and the roller 40.

As shown in fig. 9 to 11, in the pump body assembly of the present embodiment, the short shaft 60 includes a short shaft cylindrical section 61 and a second sliding section 62 connected in series along the length direction thereof, the short shaft cylindrical section 61 is pivotally connected to the lower flange 20, the second sliding section 62 has two second sliding engagement faces 621 arranged oppositely, and the two second sliding engagement faces 621 are in sliding engagement with the groove walls of the second sliding groove 42.

Specifically, the motor of the pump body assembly drives the long shaft 50 to rotate along the central axis thereof, the long shaft cylindrical section 51 rotates relative to the upper flange 10, and at the same time, drives the first sliding section 52 to rotate, so that the two first sliding mating surfaces 521 of the first sliding section 52 are mated with the groove walls of the first sliding groove 41, so that the roller 40 is driven by the long shaft 50 to slide back and forth along the extending direction of the first sliding groove 41. Then, the second sliding groove 42 of the roller 40 drives the two second sliding engagement surfaces 621 to slide, and the short shaft 60 performs a rotational movement relative to the lower flange 20, so that the roller 40 performs a reciprocating sliding movement relative to the short shaft 60 in the extending direction of the second sliding groove 42. The first sliding slot 41 and the second sliding slot 42 are perpendicular to each other, so that the reciprocating direction of the roller 40 along the first sliding slot 41 is perpendicular to the reciprocating direction of the roller 40 along the second sliding slot 42, and the relative motion relationship of the major axis 50, the roller 40 and the minor axis 60 forms a cross slide mechanism principle.

As shown in fig. 9 and 11, in the pump body assembly of the present embodiment, a second lubrication groove 622 is provided on the second slip engagement surface 621, the second lubrication groove 622 communicates with the stub shaft center hole 63 of the stub shaft 60 through a second oil passing hole 64, and the second oil passing hole 64 communicates the outer surface of the stub shaft 60 with the inner surface of the stub shaft center hole 63. In this way, during rotation of the stub shaft 60, the lubricating oil flows from the stub shaft center hole 63 into the second lubricating groove 622 via the second oil passing hole 64, and the lubricating oil is ensured to smoothly flow from the stub shaft center hole 63 into the second lubricating groove 622, thereby lubricating the second slip engagement surface 621. The arrangement ensures the oiling convenience of the short shaft center hole 63, and effectively avoids the abrasion caused by the excessive friction between the short shaft 60 and the roller 40, thereby improving the motion smoothness of the short shaft 60 and the roller 40.

Preferably, the roller 40 is a structure having a certain roughness. In this way, the first sliding groove 41 and the second sliding groove 42 have a certain roughness, so that the relative movement among the roller 40, the major axis 50, and the minor axis 60 is ensured.

As shown in fig. 6 and 8, in the pump body assembly of the present embodiment, the first sliding movement groove 41 and the second sliding movement groove 42 communicate through the axial through hole 43. Thus, the lubricating oil in the long shaft 50 flows into the short shaft center hole 63 from the first lubricating groove 522 through the axial through hole 43 and flows out from the second lubricating groove 622, thereby forming a complete oil passage and effectively avoiding a large amount of lubricating oil from leaking, fully utilizing the lubricating oil and avoiding the waste of the lubricating oil. Meanwhile, the flow reliability of the lubricating oil is improved.

As shown in fig. 12 to 16, in the pump block assembly of the present embodiment, a cylinder discharge port is provided on an end surface of the cylinder 30 as the discharge passage 33, the upper flange 10 has a flange discharge port 11 communicating with the cylinder discharge port, and the pump block assembly further includes a discharge valve assembly 80, the discharge valve assembly 80 being provided at the flange discharge port 11. Because the exhaust valve assembly 80 is arranged at the flange exhaust port 11, the gas in the cavity is effectively prevented from leaking in a large quantity, and the compression efficiency of the cavity is ensured.

As shown in fig. 15 to 17 and 28, in the pump body assembly of the present embodiment, the upper end surface of the upper flange 10 has an installation groove 12, the exhaust valve assembly 80 is disposed in the installation groove 12, and the exhaust valve assembly 80 further includes an exhaust valve sheet 81, a baffle 82 and an exhaust fastening member 83. Wherein, the baffle 82 covers the air discharge valve plate 81. The exhaust fastener 83 passes through one end of the baffle 82 and one end of the exhaust valve sheet 81 in sequence to be connected with the upper flange 10. The installation groove 12 for installing and accommodating the exhaust valve assembly 80 is provided, so that the occupied space of the exhaust valve assembly 80 is reduced, the components are reasonably arranged, and the space utilization rate of the cylinder 30 is improved. In addition, because the exhaust valve plate 81 and the baffle 82 are arranged on the exhaust valve assembly 80, the exhaust valve plate 81 is effectively prevented from being excessively opened, and the exhaust performance of the cylinder 30 is ensured.

Optionally, the exhaust fasteners 83 are screws or bolts.

Specifically, the exhaust valve assembly 80 is capable of separating the cavity from the exterior space of the pump body assembly, exhausting for back pressure: when the pump block assembly begins to exhaust, gas enters the cylinder exhaust port via the exhaust passage 33 and then enters the flange exhaust port 11. If the pressure value of the gas in the flange exhaust port 11 is greater than the pressure (exhaust pressure) of the external space, the exhaust valve plate 81 is opened, and the exhaust is started; if the pressure of the gas in the flange exhaust port 11 is less than or equal to the pressure of the external space (exhaust pressure), the exhaust valve sheet 81 does not work at this time. At this moment, the pump body assembly continues to operate and compress until the air outlet of the air cylinder is communicated with the flange air outlet 11, and air in the air outlet of the air cylinder is pressed into an external space to complete the air exhaust process. The exhaust mode of the flange exhaust port 11 is a forced exhaust mode.

In the pump body assembly of the present embodiment, the assembly process of the pump body assembly is as shown in fig. 22, which specifically includes the following steps:

the lower end of the long shaft 50 is firstly extended into the first sliding groove 41 of the roller 40, the upper end of the short shaft 60 is then arranged into the second sliding groove 42 extended into the roller 40, the three components are then arranged into the cylinder 30, and finally the cylinder 30 and the three components are connected together through the upper flange 10 and the lower flange 20. Specifically, the upper flange 10 is sleeved outside the long shaft 50 and is mounted on the upper surface of the cylinder 30 through a first fastener 91, the lower flange 20 is sleeved outside the short shaft 60 and is mounted on the lower surface of the cylinder 30 through a second fastener 92, and then the roller 40 is disposed in the cylinder 30 and the roller 40 can move relative to the cylinder 30.

As shown in fig. 30, the present application also provides a fluid machine including the pump body assembly described above. Optionally, the fluid machine is a compressor. The compressor includes a dispenser part 100, a housing assembly 110, a motor assembly 120, a pump body assembly 130, an upper cover assembly 140, and a lower cover and mounting plate 150. Wherein the dispenser part 100 is disposed outside the housing assembly 110, the upper cap assembly 140 is assembled at the upper end of the housing assembly 110, the lower cap and mounting plate 150 is assembled at the lower end of the housing assembly 110, the motor assembly 120 and the pump body assembly 130 are both located inside the housing assembly 110, and the motor assembly 120 is disposed above the pump body assembly 130. The pump body assembly 130 of the compressor includes the upper flange 10, the lower flange 20, the cylinder 30, the roller 40, the major axis 50, and the minor axis 60.

Optionally, the above components are connected by welding, shrink fitting, or cold pressing.

The present 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-described embodiments of the present invention achieve the following technical effects:

in the operation process of the pump body assembly, the long shaft drives the roller to move through the first sliding groove, the roller reciprocates in the extending direction of the first sliding groove relative to the long shaft, meanwhile, the second sliding groove at the lower end of the roller is in sliding fit with the top end of the short shaft, the second sliding groove drives the short shaft to move, and the roller reciprocates in the extending direction of the second sliding groove relative to the short shaft. Because the extending direction in first groove that slides and the extending direction in second groove that slides between have the contained angle that slides, then the roller carries out the extending direction in first groove that slides and the extending direction's in second groove superimposed movement to adjust the volume between cylinder and the roller, guarantee pump body subassembly can normal operating.

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection 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 example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of 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 claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pump body assembly, comprising:

an upper flange (10);

a lower flange (20);

a cylinder (30), the cylinder (30) being clamped between the upper flange (10) and the lower flange (20);

the roller (40) is rotatably arranged in the cylinder (30), a first sliding groove (41) is formed in the upper end of the roller (40), and a second sliding groove (42) is formed in the lower end of the roller (40);

the bottom end of the long shaft (50) penetrates through the upper flange (10) and is slidably arranged in the first sliding groove (41), the long shaft (50) and the cylinder (30) are eccentrically arranged, and the eccentric distance e is fixed;

the top end of the short shaft (60) penetrates through the lower flange (20) and is slidably arranged in the second sliding groove (42), the short shaft (60) and the cylinder (30) are eccentrically arranged, the eccentric distance e is fixed, the short shaft (60) and the long shaft (50) are eccentrically arranged, the eccentric distance 2e is fixed, and a sliding included angle is formed between the extending direction of the first sliding groove (41) and the extending direction of the second sliding groove (42).

2. The pump body assembly according to claim 1, characterized in that the direction of extension of the first sliding groove (41) is perpendicular to the direction of extension of the second sliding groove (42).

3. The pump body assembly according to claim 2, characterized in that the roller (40) is a cylindrical roller.

4. The pump body assembly according to claim 1, characterized in that the internal bore of the cylinder (30) is oval.

5. The pump body assembly according to any one of claims 1 to 4, wherein the cylinder (30) has a slide groove (31), the pump body assembly further comprising a slide (70), the slide (70) being slidably disposed within the slide groove (31) and held in abutment with an outer peripheral surface of the roller (40).

6. The pump block assembly according to claim 5, characterized in that the cylinder (30) has an intake channel (32) and an exhaust channel (33), the intake channel (32) and the exhaust channel (33) being located on either side of the vane (70).

7. Pump body assembly according to claim 6, characterized in that a first line l between the intake channel (32) and the centre point of the cylinder (30), with the plane of the slide (70) as reference plane (71), is defined as₁A first angle a with the reference plane (71) is less than or equal to 50 degrees.

8. Pump body assembly according to claim 6, characterized in that a second line (/) between the exhaust channel (33) and the centre point of the cylinder (30), with the plane of the slide (70) as reference plane (71)₂And a second included angle B with the reference plane (71) is less than or equal to 50 degrees.

9. Pump body assembly according to claim 7, characterized in that a second line (/) between the exhaust channel (33) and the centre point of the cylinder (30), with the plane of the slide (70) as reference plane (71)₂And the first connecting line l₁The third included angle C between the first and second angles is less than or equal to 90 degrees.

10. The pump body assembly of claim 5,

the head of the slide (70) has an arc-shaped face (72);

and a slide plate spring (73) is arranged at the tail part of the slide plate (70).

11. The pump body assembly according to any one of claims 1 to 4, wherein the long shaft (50) comprises a long shaft cylindrical section (51) and a first sliding section (52) which are connected in sequence along the length direction of the long shaft cylindrical section, the long shaft cylindrical section (51) is pivotally connected with the upper flange (10), the first sliding section (52) is provided with two first sliding fit faces (521) which are oppositely arranged, and the two first sliding fit faces (521) are in sliding fit with the groove wall of the first sliding groove (41).

12. The pump body assembly according to claim 11, wherein a first lubrication groove (522) is provided on the first slip engagement surface (521), the first lubrication groove (522) communicates with the long-shaft center hole (53) of the long shaft (50) through a first oil passing hole (54), and the first oil passing hole (54) communicates an outer surface of the long shaft (50) with an inner surface of the long-shaft center hole (53).

13. The pump body assembly according to any one of claims 1 to 4, wherein the short shaft (60) comprises a short shaft cylindrical section (61) and a second sliding section (62) which are connected in sequence along the length direction of the short shaft cylindrical section, the short shaft cylindrical section (61) is pivotally connected with the lower flange (20), the second sliding section (62) is provided with two second sliding fit faces (621) which are oppositely arranged, and the two second sliding fit faces (621) are in sliding fit with groove walls of the second sliding groove (42).

14. The pump body assembly according to claim 13, wherein a second lubrication groove (622) is provided on the second slip engagement surface (621), the second lubrication groove (622) communicates with the stub shaft center hole (63) of the stub shaft (60) through a second oil passing hole (64), and the second oil passing hole (64) communicates an outer surface of the stub shaft (60) with an inner surface of the stub shaft center hole (63).

15. The pump body assembly according to any one of claims 1 to 4, characterized in that the first sliding groove (41) communicates with the second sliding groove (42) through an axial through hole (43).

16. The pump body assembly according to claim 6, wherein a cylinder discharge port is provided on an end face of the cylinder (30) as the discharge passage (33), the upper flange (10) has a flange discharge port (11) communicating with the cylinder discharge port, the pump body assembly further comprising a discharge valve assembly (80), the discharge valve assembly (80) being provided at the flange discharge port (11).

17. The pump body assembly according to claim 16, wherein the upper end face of the upper flange (10) has a mounting groove (12), the vent valve assembly (80) being disposed within the mounting groove (12), the vent valve assembly (80) further comprising:

an exhaust valve plate (81);

the baffle (82), the said baffle (82) is covered on the said air discharge valve block (81);

and the exhaust fastener (83) sequentially penetrates through one end of the baffle plate (82) and one end of the exhaust valve plate (81) to be connected with the upper flange (10).

18. The pump body assembly according to claim 1, characterized in that the internal bore of the cylinder (30) is non-circular.

19. A fluid machine, characterized by comprising a pump body assembly according to any one of claims 1 to 18.

20. A heat exchange device comprising a fluid machine according to claim 19.