Pump body assembly and rotor compressor

Abstract

The present invention provides a pump body assembly and a rotor compressor, belonging to the technical field of compressors; the pump body assembly comprises a cylinder, a roller and a sliding vane; a compression chamber is formed inside the cylinder, and a sliding groove connected to the compression chamber is formed on the side wall of the cylinder; the roller is rotatably arranged in the compression chamber; the sliding vane is slidably arranged in the sliding groove, the head of the sliding vane abuts against the roller, and an elastic member is arranged between the tail and the bottom wall of the sliding groove; a rolling body is arranged between the dynamic sliding wall of the sliding vane and the static sliding wall of the sliding groove; when the sliding vane slides along the sliding groove under the action of the roller and the elastic member, the rolling body rolls between the dynamic sliding wall and the static sliding wall; the sliding friction between the sliding vane and the sliding groove is converted into rolling friction, the wear of the sliding vane and the sliding groove is reduced, the friction power consumption between the sliding vane and the sliding groove is reduced, the working performance of the compressor is improved, and the problem that the friction between the sliding vane and the sliding groove in the existing rotor compressor is large, the wear of the sliding vane and the sliding groove is large and the friction power consumption is high, resulting in a decrease in the performance of the compressor is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of compressors, and in particular relates to a pump body assembly and a rotor compressor. Background Art

[0002] The rotary compressor is widely used in the field of air treatment equipment due to its simple structure and low cost. In the pump body assembly of the rotary compressor, the roller is arranged in the compression chamber of the cylinder, and the vane is arranged in the slide groove of the cylinder. The vane slides along the slide groove under the action of the roller and the spring, so that the cylinder realizes suction and exhaust. The side of the vane facing the suction port of the cylinder is the low-pressure side, and the side of the vane facing the exhaust port of the cylinder is the high-pressure side. The gas pressure carried by the high-pressure side is greater than the gas pressure carried by the low-pressure side. Therefore, the vane will tilt toward the side wall of the slide groove close to the suction port and contact with the side wall of the slide groove to generate a large friction force, thereby increasing the wear of the vane and the slide groove, and the friction power consumption is relatively high, which reduces the working performance of the compressor. Summary of the invention

[0003] In view of this, the present invention provides a pump body assembly and a rotor compressor to solve the problem in the prior art that the friction between the vane and the slide groove is large, resulting in large wear of the vane and the slide groove and high friction power consumption, leading to reduced compressor performance.

[0004] The present invention provides a pump body assembly for a rotor compressor; the pump body assembly comprises:

[0005] A cylinder and a roller, wherein a compression chamber is formed inside the cylinder, and a slide groove communicating with the compression chamber is formed on the side wall of the cylinder; the slide groove includes a static sliding wall, and the roller is rotatably arranged in the compression chamber;

[0006] A sliding plate is slidably arranged in the sliding groove, the head of the sliding plate is in contact with the roller, and an elastic member is arranged between the tail of the sliding plate and the bottom wall of the sliding groove; the sliding plate includes a movable sliding wall located between the head and the tail, and the movable sliding wall and the static sliding wall are arranged opposite to each other in the thickness direction or the width direction of the sliding plate;

[0007] One of the movable sliding wall and the static sliding wall is formed with a positioning hole, and the other is formed with a raceway; the extension direction of the raceway is parallel to the sliding direction of the sliding sheet, and the position of the raceway corresponds to the position of the positioning hole; a rolling body is arranged in the positioning hole, a part of the rolling body is in rolling engagement with the positioning hole, and another part of the rolling body is in rolling engagement with the raceway;

[0008] When the sliding sheet slides along the sliding groove under the action of the roller and the elastic member, the rolling body can roll in the positioning hole and the raceway.

[0009] Further optionally, the dynamic sliding wall comprises a first dynamic sliding wall and a second dynamic sliding wall which are arranged opposite to each other along the thickness direction of the sliding sheet; the static sliding wall comprises a first static sliding wall which is arranged corresponding to the first dynamic sliding wall and a second static sliding wall which is arranged corresponding to the second dynamic sliding wall;

[0010] The first movable sliding wall and the second movable sliding wall are both formed with the rolling path, and the first static sliding wall and the second static sliding wall are both formed with the positioning hole; the rolling path on the first movable sliding wall and the positioning hole on the first static sliding wall are arranged correspondingly; the rolling path on the second movable sliding wall and the positioning hole on the second static sliding wall are arranged correspondingly;

[0011] The rolling bodies are disposed in the positioning holes on the first static sliding wall and the second static sliding wall, so that when the sliding sheet slides along the sliding groove, the sliding sheet and the sliding groove do not contact each other.

[0012] Further optionally, the movable sliding wall further comprises a third movable sliding wall and a fourth movable sliding wall which are arranged opposite to each other along the width direction of the sliding sheet, and the third movable sliding wall and the fourth movable sliding wall are both connected between the first movable sliding wall and the second movable sliding wall;

[0013] A main oil passage for the sliding vane is formed inside the sliding vane, and the main oil passage for the sliding vane is connected to the third movable sliding wall and the fourth movable sliding wall;

[0014] The main oil passage of the sliding vane and the rolling path of the first moving sliding wall and the rolling path of the second moving sliding wall are all connected through the auxiliary oil passage of the sliding vane.

[0015] Further optionally, the vane auxiliary oil channel includes a first vane auxiliary oil channel; the rolling track of the first movable sliding wall forms a first oil port, and the rolling track of the second movable sliding wall forms a second oil port; the first vane auxiliary oil channel is connected between the first oil port and the second oil port, and the first vane auxiliary oil channel and the vane main oil channel are connected inside the vane.

[0016] Further optionally, the slide vane auxiliary oil passage comprises a second slide vane auxiliary oil passage and a third slide vane auxiliary oil passage; the first movable sliding wall forms a third oil passage between two adjacent raceways, and the second movable sliding wall forms a fourth oil passage between two adjacent raceways; the second slide vane auxiliary oil passage is connected between the third oil passage and the fourth oil passage, and the second slide vane auxiliary oil passage and the slide vane main oil passage are connected inside the slide vane;

[0017] The third slide vane auxiliary oil passage is formed on both the first movable sliding wall and the second movable sliding wall; the third slide vane auxiliary oil passage on the first movable sliding wall is connected to the rolling path and the third oil passage on the first movable sliding wall, and the third slide vane auxiliary oil passage on the second movable sliding wall is connected to the rolling path and the fourth oil passage on the second movable sliding wall;

[0018] The third sliding vane auxiliary oil passage of the first movable sliding wall and the third sliding vane auxiliary oil passage of the second movable sliding wall are both connected to the third movable sliding wall and the fourth movable sliding wall.

[0019] Further optionally, the first static sliding wall and the second static sliding wall are both formed with a slide groove main oil passage; the slide groove main oil passage on the first static sliding wall is connected to the positioning hole, and the slide groove main oil passage on the second static sliding wall is connected to the positioning hole;

[0020] The movable sliding wall further comprises a third movable sliding wall and a fourth movable sliding wall which are arranged opposite to each other along the width direction of the sliding sheet;

[0021] The lubricating oil in the main oil passage of the slide groove on the first static sliding wall and the lubricating oil in the main oil passage of the slide groove on the second static sliding wall can both flow to the third moving sliding wall and the fourth moving sliding wall.

[0022] Further optionally, the bottom wall of the slide groove is formed with an oil storage cavity; the first static sliding wall and the second static sliding wall are both formed with slide groove auxiliary oil passages; the slide groove auxiliary oil passage on the first static sliding wall is connected with the oil storage cavity and the slide groove main oil passage on the first static sliding wall; the slide groove auxiliary oil passage on the second static sliding wall is connected with the oil storage cavity and the slide groove main oil passage on the second static sliding wall;

[0023] When the sliding plate slides along the slide groove in a direction away from the roller, the lubricating oil in the oil storage chamber can enter the corresponding slide groove main oil channel through the slide groove auxiliary oil channel.

[0024] Further optionally, the rolling body is spherical or cylindrical; and the positioning hole can accommodate at least half of the volume of the rolling body.

[0025] Further optionally, the first movable sliding wall and the second movable sliding wall are both formed with M rolling tracks, and the M rolling tracks on the first movable sliding wall and the M rolling tracks on the second movable sliding wall are both arranged at intervals along the width direction of the sliding sheet;

[0026] The first static sliding wall and the second static sliding wall are both formed with M positioning hole groups, and the M positioning hole groups on the first static sliding wall and the M positioning hole groups on the second static sliding wall are arranged at intervals along the width direction of the sliding plate; each of the positioning hole groups includes N positioning holes arranged at intervals along the sliding direction of the sliding plate, and the rolling body is arranged in each of the positioning holes;

[0027] The M rolling paths on the first movable sliding wall and the M positioning hole groups on the first static sliding wall are arranged in a one-to-one correspondence, and the M rolling paths on the second movable sliding wall and the M positioning hole groups on the second static sliding wall are arranged in a one-to-one correspondence;

[0028] Wherein, M and N are both positive integers, and M≥2, N≥2.

[0029] The present invention further provides a rotary compressor, the rotary compressor comprising a casing and a pump body assembly as described in any one of the above items; the casing is formed with an installation cavity, the pump body assembly is arranged in the installation cavity and the pump body assembly further comprises an upper flange, a lower flange and a crankshaft, the upper flange, the cylinder and the lower flange are arranged in sequence from top to bottom; the upper flange is formed with an upper flange hole, the lower flange is formed with a lower flange hole; the crankshaft comprises a long shaft, an eccentric shaft and a short shaft arranged in sequence from top to bottom, the long shaft and the upper flange hole are rotatably matched, the eccentric shaft is drivingly connected to the roller, and the short shaft and the lower flange hole are rotatably matched;

[0030] When the crankshaft is controlled to rotate, the eccentric shaft can rotate with the roller.

[0031] Compared with the prior art, the beneficial effects of the present invention are mainly:

[0032] A rolling body is arranged between the dynamic sliding wall of the sliding vane and the static sliding wall of the sliding groove. When the sliding vane slides along the sliding groove under the action of the roller and the elastic member, the rolling body rolls between the dynamic sliding wall and the static sliding wall; the sliding friction between the sliding vane and the sliding groove is converted into rolling friction, the friction between the sliding vane and the sliding groove is reduced, the wear of the sliding vane and the sliding groove is reduced, the friction power consumption between the sliding vane and the sliding groove is reduced, the efficiency of the pump body assembly and the working performance of the compressor are improved, and the problem that the friction between the sliding vane and the sliding groove in the existing rotor compressor is large, the wear of the sliding vane and the sliding groove is large, the friction power consumption is high, and the performance of the compressor is reduced is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0034] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0035] Figure 1a A schematic diagram of the front view of the pump assembly embodiment provided by the present invention;

[0036] Figure 1b for Figure 1a Enlarged view of point A in the middle;

[0037] Figure 2a A schematic diagram of a top view of a pump assembly embodiment provided by the present invention;

[0038] Figure 2b for Figure 2a Enlarged view of point B in the middle;

[0039] Figure 3 A schematic cross-sectional view of a cylinder embodiment provided by the present invention;

[0040] Figure 4a and Figure 4b A schematic diagram of the structure of a sliding plate embodiment provided by the present invention;

[0041] Figure 5a A schematic diagram of the axial structure of another embodiment of the sliding plate provided by the present invention;

[0042] Figure 5b A schematic diagram of the front structure of another embodiment of the slide provided by the present invention;

[0043] Figure 5c A left-side structural schematic diagram of another embodiment of a sliding plate provided by the present invention;

[0044] Figure 6a A schematic diagram of the axial structure of another embodiment of the sliding plate provided by the present invention;

[0045] Figure 6b A schematic diagram of the front structure of another embodiment of the slide provided by the present invention;

[0046] Figure 6c A left-side structural schematic diagram of another embodiment of the sliding plate provided by the present invention;

[0047] Figure 7 A schematic diagram of the structure of a compressor embodiment provided by the present invention;

[0048] In the figure:

[0049] 11-cylinder; 111-compression chamber; 112-slide groove; 113-first static sliding wall; 114-second static sliding wall; 115-positioning hole; 12-slide; 121-first moving sliding wall; 122-second moving sliding wall; 123-roller; 124-third moving sliding wall; 125-fourth moving sliding wall; 126-slide main oil passage; 1271-first slide auxiliary oil passage; 1272-second slide auxiliary oil passage; 1273-third slide auxiliary oil passage; 13-rolling body; 14-roller; 15-elastic member;

[0050] 21- housing; 22- motor; 23- upper cover; 24- lower cover; 25- base; 26- gas-liquid separator; 27- air intake pipe; 28- exhaust pipe;

[0051] 31-muffler; 32-upper flange; 33-lower flange; 34-crankshaft; 341-long shaft; 342-eccentric shaft; 343-short shaft. DETAILED DESCRIPTION

[0052] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two, but does not exclude the inclusion of at least one.

[0054] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0055] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0056] In the existing rotor compressor, the side of the sliding vane facing the air intake port of the cylinder is the low-pressure side, and the side of the sliding vane facing the air exhaust port of the cylinder is the high-pressure side. The gas pressure carried by the high-pressure side is greater than the gas pressure carried by the low-pressure side. Therefore, the sliding vane will tilt toward the side wall of the slide groove close to the air intake port and contact with the side wall of the slide groove to generate a large friction force, thereby increasing the wear of the sliding vane and the slide groove, and the friction power consumption is relatively high, which reduces the working performance of the compressor.

[0057] The present invention creatively provides a pump body assembly, wherein a rolling body is arranged between a dynamic sliding wall of a sliding vane and a static sliding wall of a sliding groove; when the sliding vane slides along the sliding groove under the action of a roller and an elastic member, the rolling body rolls between the dynamic sliding wall and the static sliding wall; the sliding friction between the sliding vane and the sliding groove is converted into rolling friction, thereby reducing the friction force between the sliding vane and the sliding groove, reducing the wear of the sliding vane and the sliding groove, reducing the friction power consumption between the sliding vane and the sliding groove, and improving the efficiency of the pump body assembly.

[0058] Example 1

[0059] like Figures 1a to 4b As shown, this embodiment provides a pump body assembly for a rotor compressor, and the pump body assembly includes:

[0060] The cylinder 11 has a compression chamber 111 formed therein, and a slide groove 112 communicating with the compression chamber 111 is formed on the side wall of the cylinder 11; the slide groove 112 includes a static slide wall;

[0061] A roller 14 rotatably disposed in the compression chamber 111;

[0062] The slide 12 is slidably arranged in the slide groove 112, and the sliding direction of the slide 12 is parallel to the radial direction of the compression chamber 111; the head of the slide 12 is in contact with the roller 14, and an elastic member 15 is arranged between the tail of the slide 12 and the bottom wall of the slide groove 112; the slide 12 includes a dynamic sliding wall located between the head and the tail, and the dynamic sliding wall and the static sliding wall are arranged relative to each other in the thickness direction or width direction of the slide 12; a rolling body 13 is arranged between the dynamic sliding wall and the static sliding wall; preferably, the center line of the slide groove 112 and the center line of the slide 12 are collinear, and the dynamic sliding wall and the static sliding wall are arranged relative to each other in the thickness direction of the slide 12; the elastic member 15 is a spring;

[0063] When the roller 14 is controlled to rotate, the slide 12 slides along the slide groove 112 under the action of the roller 14 and the elastic member 15, and the rolling body 13 rolls between the dynamic sliding wall and the static sliding wall; the sliding friction between the slide 12 and the slide groove 112 is converted into rolling friction, thereby reducing the friction between the slide 12 and the slide groove 112 and improving the efficiency of the pump body assembly.

[0064] The position of the rolling body 13 is related to the sliding stability of the sliding plate 12. The following further describes the setting position of the rolling body 13. One of the moving sliding wall and the static sliding wall is formed with a positioning hole 115, and the other is formed with a raceway 123. The extension direction of the raceway 123 is parallel to the sliding direction of the sliding plate 12, and the position of the raceway 123 corresponds to the position of the positioning hole 115.

[0065] The rolling body 13 is spherical or cylindrical; when the rolling body 13 is spherical, the rolling body 13 is a ball; when the rolling body 13 is cylindrical, the rolling body 13 is a roller;

[0066] The rolling element 13 is disposed in the positioning hole 115, and a portion of the rolling element 13 is in rolling cooperation with the positioning hole 115, and another portion of the rolling element 13 is in rolling cooperation with the raceway 123; the lubricating oil can provide lubrication to the rolling element 13 through the raceway 123, and plays a sealing role to prevent gas leakage through the raceway 123;

[0067] When the vane 12 slides along the slide groove 112, the rolling body 13 can roll in the positioning hole 115 and the raceway 123, and the vane 12 and the slide groove 112 do not contact each other; that is, when the vane 12 slides relative to the slide groove 112, the raceway 123 makes the rolling body 13 roll in the positioning hole 115, but the overall position of the rolling body 13 remains unchanged; the contact area between the vane 12 and the slide groove 112 is reduced, the friction power between the vane 12 and the slide groove 112 is reduced, and the performance of the compressor is improved;

[0068] Preferably, the moving sliding wall is formed with a rolling track 123 , and the stationary sliding wall is formed with positioning holes 115 ; each rolling track 123 corresponds to at least two positioning holes 115 and two rolling bodies 13 .

[0069] In order to ensure that the rolling body 13 can roll in the positioning hole 115 without changing the overall position of the rolling body 13, the positioning hole 115 of this embodiment is designed to accommodate at least half of the volume of the rolling body 13; thus, when the slide 12 slides along the slide groove 112, the raceway 123 can enable the rolling body 13 to roll stably in the positioning hole 115.

[0070] The structure of the positioning hole 115 and the raceway 123 affects the stability of the rolling body 13 moving in the positioning hole 115 and the raceway 123. The structure of the positioning hole 115 and the raceway 123 is further described below. When the rolling body 13 is spherical, the positioning hole 115 is hemispherical, and the cross section of the raceway 123 is semicircular; satisfying: R11>R10, R12>R10; wherein R10 is the radius of the rolling body 13, R11 is the radius of the positioning hole 115, and R12 is the radius of the cross section of the raceway 123;

[0071] Preferably, 0.1 mm ≤ R10 ≤ 0.5 mm, 0.1 mm ≤ R11 ≤ 0.5 mm; it should be noted that the radius of the positioning hole 115 and the radius of the rolling body 13 are not limited; as long as the rolling body 13 can roll smoothly in the positioning hole 115;

[0072] When the rolling body 13 is cylindrical, the positioning hole 115 is semi-cylindrical and the axis of the positioning hole 115 is perpendicular to the sliding direction of the sliding sheet 12, and the cross section of the raceway 123 is semi-circular; satisfying: R21>R20, R22>R20; wherein R20 is the radius of the cross section of the rolling body 13, R21 is the radius of the cross section of the positioning hole 115, and R22 is the radius of the cross section of the raceway 123;

[0073] In this embodiment, the rolling body 13 is preferably spherical, that is, the rolling body 13 is a ball; the number of the positioning holes 115 is the same as the number of the rolling body 13.

[0074] The following further describes the location of the positioning hole 115 and the raceway 123 in combination with the structure of the slide 12. The dynamic sliding wall includes a first dynamic sliding wall 121 and a second dynamic sliding wall 122 that are relatively arranged along the thickness direction of the slide 12; the static sliding wall includes a first static sliding wall 113 that is arranged corresponding to the first dynamic sliding wall 121 and a second static sliding wall 114 that is arranged corresponding to the second dynamic sliding wall 122; that is, the first static sliding wall 113 and the second static sliding wall 114 are relatively arranged along the width direction of the slide groove 112; wherein the thickness direction of the slide 12 is perpendicular to the sliding direction of the slide 12, and the thickness direction of the slide 12 is parallel to the width direction of the slide groove 112;

[0075] The first movable sliding wall 121 and the second movable sliding wall 122 are both formed with a rolling track 123, and the first static sliding wall 113 and the second static sliding wall 114 are both formed with a positioning hole 115; the rolling track 123 on the first movable sliding wall 121 and the positioning hole 115 on the first static sliding wall 113 are correspondingly arranged, and a rolling body 13 is arranged in the positioning hole 115 on the first static sliding wall 113, and the rolling body 13 can roll in the rolling track 123 on the first movable sliding wall 121 and the positioning hole 115 on the first static sliding wall 113, so that the first movable sliding wall 121 and the first static sliding wall 113 are not in contact, thereby reducing the friction between the first movable sliding wall 121 and the first static sliding wall 113;

[0076] The raceway 123 on the second movable sliding wall 122 and the positioning hole 115 on the second static sliding wall 114 are arranged correspondingly, and a rolling body 13 is arranged in the positioning hole 115 on the second static sliding wall 114. The rolling body 13 can roll in the raceway 123 on the second movable sliding wall 122 and the positioning hole 115 on the second static sliding wall 114, so that the second movable sliding wall 122 and the second static sliding wall 114 do not contact each other, thereby reducing the friction between the second movable sliding wall 122 and the second static sliding wall 114.

[0077] The number of rolling bodies 13 between the sliding plate 12 and the sliding groove 112 affects not only the sliding stability of the sliding plate 12, but also the bearing capacity of a single rolling body 13. The number of rolling bodies 13 between the sliding plate 12 and the sliding groove 112 is further described below. The first movable sliding wall 121 and the second movable sliding wall 122 are both formed with M rolling tracks 123. The M rolling tracks 123 on the first movable sliding wall 121 and the M rolling tracks 123 on the second movable sliding wall 122 are both arranged at intervals along the width direction of the sliding plate 12; wherein the width direction of the sliding plate 12 is perpendicular to the thickness direction of the sliding plate 12 and the sliding direction of the sliding plate 12;

[0078] The first static sliding wall 113 and the second static sliding wall 114 are both formed with M positioning hole groups, and the M positioning hole groups on the first static sliding wall 113 and the M positioning hole groups on the second static sliding wall 114 are arranged at intervals along the width direction of the sliding plate 12; each positioning hole group includes N positioning holes 115 arranged at intervals along the sliding direction of the sliding plate 12, and a rolling body 13 is arranged in each positioning hole 115;

[0079] The M rolling tracks 123 on the first movable sliding wall 121 and the M positioning hole groups on the first static sliding wall 113 are arranged in a one-to-one correspondence, and the M rolling tracks 123 on the second movable sliding wall 122 and the M positioning hole groups on the second static sliding wall 114 are arranged in a one-to-one correspondence;

[0080] Wherein, M and N are both positive integers, and M≥2, N≥2.

[0081] Specifically, taking M=2 and N=2 as an example to further illustrate, the first movable sliding wall 121 and the second movable sliding wall 122 are both formed with two rolling tracks 123, and the two rolling tracks 123 on the first movable sliding wall 121 and the two rolling tracks 123 on the second movable sliding wall 122 are both arranged at intervals along the width direction of the sliding sheet 12; the first static sliding wall 113 and the second static sliding wall 114 are both formed with two positioning hole groups, each positioning hole group includes two positioning holes 115, and the two positioning holes 115 in each positioning hole group are arranged at intervals along the sliding direction of the sliding sheet 12; the two rolling tracks 123 of the first movable sliding wall 121 are symmetrically arranged in the width direction of the sliding sheet 12 relative to the center line of the sliding sheet 12, and the two rolling tracks 123 of the second movable sliding wall 122 are symmetrically arranged in the width direction of the sliding sheet 12 relative to the center line of the sliding sheet 12;

[0082] The two positioning hole groups on the first static sliding wall 113 are symmetrically arranged in the width direction of the sliding sheet 12 relative to the center line of the sliding groove 112; one positioning hole group on the first static sliding wall 113 is correspondingly arranged with a raceway 123 on the first moving sliding wall 121, and another positioning hole group on the first static sliding wall 113 is correspondingly arranged with another raceway 123 on the first moving sliding wall 121; that is, the two positioning holes 115 on the first static sliding wall 113 are correspondingly arranged with a raceway 123 on the first moving sliding wall 121, and the other two positioning holes 115 on the first static sliding wall 113 are correspondingly arranged with another raceway 123 on the first moving sliding wall 121; a rolling body 13 is rotatably arranged in each positioning hole 115 on the first static sliding wall 113, and the rolling body 13 between the first static sliding wall 113 and the first moving sliding wall 121 can roll in the corresponding positioning hole 115 and the raceway 123;

[0083] The two positioning hole groups on the second static sliding wall 114 are symmetrically arranged in the width direction of the sliding sheet 12 relative to the center line of the sliding groove 112; one positioning hole group on the second static sliding wall 114 and a raceway 123 on the second movable sliding wall 122 are arranged correspondingly, and another positioning hole group on the second static sliding wall 114 and another raceway 123 on the second movable sliding wall 122 are arranged correspondingly; that is, the two positioning holes 115 on the second static sliding wall 114 and a raceway 123 on the second movable sliding wall 122 are arranged correspondingly, and the other two positioning holes 115 on the second static sliding wall 114 and another raceway 123 on the second movable sliding wall 122 are arranged correspondingly; a rolling body 13 is rotatably arranged in each positioning hole 115 on the second static sliding wall 114, and the rolling body 13 between the second static sliding wall 114 and the second movable sliding wall 122 can roll in the corresponding positioning hole 115 and raceway 123.

[0084] The movable sliding wall further includes a third movable sliding wall 124 and a fourth movable sliding wall 125 which are arranged opposite to each other along the width direction of the sliding sheet 12, and the third movable sliding wall 124 and the fourth movable sliding wall 125 are both connected to the first movable sliding wall 121 and the second movable sliding wall 122; the static sliding wall further includes a third static sliding wall which is arranged corresponding to the third movable sliding wall 124 and a fourth static sliding wall which is arranged corresponding to the fourth movable sliding wall 125; that is, the third static sliding wall and the fourth static sliding wall are arranged opposite to each other along the length direction of the sliding groove 112; the third static sliding wall and the fourth static sliding wall are both connected to the first static sliding wall 113 and the second static sliding wall 114;

[0085] The depth direction of the slide groove 112 is consistent with the sliding direction of the slide plate, and the length direction of the slide groove 112 is perpendicular to the width direction of the slide groove 112 and the depth direction of the slide groove 112; a rolling body is provided between the first movable sliding wall 121 and the first static sliding wall 113, a rolling body is provided between the second movable sliding wall 122 and the second static sliding wall 114, the third movable sliding wall 124 and the third static sliding wall are arranged at intervals, and the fourth movable sliding wall 125 and the fourth static sliding wall are arranged at intervals, so that the slide plate 12 and the slide groove 112 are not in direct contact;

[0086] The present invention adds a rolling body 13 between the slide groove 112 and the slide vane 12, changes the friction between the slide groove 112 and the slide vane 12 from sliding friction to rolling friction, and makes the center line of the slide groove 112 coincide with the center line of the slide vane 12, thereby ensuring that during the operation of the compressor, the dynamic sliding wall and the static sliding wall are not in direct contact, thereby effectively reducing the friction power loss of the pump body assembly, improving the efficiency of the pump body assembly, solving the problem of large friction power loss of the pump body assembly in the prior art, and being beneficial to improving the performance of the compressor.

[0087] Example 2

[0088] like Figures 5a to 6cAs shown, different from the embodiment 1, a main oil passage 126 is formed inside the sliding vane 12, and the main oil passage 126 extends along the width direction of the sliding vane 12; the main oil passage 126 connects the third movable sliding wall 124 and the fourth movable sliding wall 125;

[0089] The vane main oil passage 126 and the raceway 123 of the first movable sliding wall 121 and the raceway 123 of the second movable sliding wall 122 are all connected through the vane auxiliary oil passage.

[0090] The lubricating oil can be delivered to the first movable sliding wall 121, the second movable sliding wall 122 and the head and tail of the sliding vane 12 through the rolling path 123, thereby increasing the amount of lubricating oil at the first movable sliding wall 121 and the second movable sliding wall 122; the lubricating oil can be delivered to the third movable sliding wall 124 and the fourth movable sliding wall 125 through the rolling path 123, the sliding vane auxiliary oil passage and the sliding vane main oil passage 126, thereby increasing the amount of lubricating oil at the third movable sliding wall 124 and the fourth movable sliding wall 125;

[0091] Specifically, when the pump body assembly includes a cylinder 11, an upper flange 32 and a lower flange 33 are respectively provided on both axial sides of the cylinder 11, the third movable sliding wall 124 and the end surface of the upper flange 32 are matched, and the fourth movable sliding wall 125 and the end surface of the lower flange 33 are matched. More lubricating oil can be delivered to the end surface between the third movable sliding wall 124 and the upper flange 32 and between the fourth movable sliding wall 125 and the end surface of the lower flange 33 through the slide auxiliary oil passage and the slide main oil passage 126, thereby reducing the friction power consumption between the third movable sliding wall 124 and the end surface of the upper flange 32 and between the fourth movable sliding wall 125 and the end surface of the lower flange 33, thereby improving the lubrication effect of the pump body assembly;

[0092] When the pump body assembly includes two cylinders, the two cylinders are respectively an upper cylinder and a lower cylinder, and an upper flange, an upper cylinder, a partition, a lower cylinder and a lower flange are sequentially arranged along the axial direction of the two cylinders; the third movable sliding wall 124 of the sliding vane of the upper cylinder cooperates with the end face of the upper flange, the fourth movable sliding wall 125 cooperates with one end face of the partition, the fourth movable sliding wall 125 of the sliding vane of the lower cylinder cooperates with the end face of the lower flange, and the third movable sliding wall 124 cooperates with the other end face of the partition; more lubricating oil can be transported to the space between the third movable sliding wall 124 of the sliding vane of the upper cylinder and the end face of the upper flange, through the sliding vane auxiliary oil passage and the sliding vane main oil passage 126. Between the fourth movable sliding wall 125 of the sliding vane of the upper cylinder and one end surface of the partition, between the fourth movable sliding wall 125 of the sliding vane of the lower cylinder and the end surface of the lower flange, and between the third movable sliding wall 124 of the sliding vane of the lower cylinder and the other end surface of the partition, the friction power consumption between the third movable sliding wall 124 of the sliding vane of the upper cylinder and the end surface of the upper flange, between the fourth movable sliding wall 125 of the sliding vane of the upper cylinder and one end surface of the partition, between the fourth movable sliding wall 125 of the sliding vane of the lower cylinder and the end surface of the lower flange, and between the third movable sliding wall 124 of the sliding vane of the lower cylinder and the other end surface of the partition is reduced, thereby improving the lubrication effect of the pump body assembly.

[0093] Furthermore, the communication modes of the main oil channel 126 of the sliding vane and the raceway 123 of the first movable sliding wall 121 and the raceway 123 of the second movable sliding wall 122 include the following two modes:

[0094] The first connection method is Figure 5a to Figure 5c As shown, the vane auxiliary oil passage includes a first vane auxiliary oil passage 1271; the raceway 123 of the first movable sliding wall 121 is formed with a first oil passage, and the raceway 123 of the second movable sliding wall 122 is formed with a second oil passage; the first vane auxiliary oil passage 1271 is connected between the first oil passage and the second oil passage, and the first vane auxiliary oil passage 1271 and the vane main oil passage 126 are connected inside the vane 12; the first vane auxiliary oil passage 1271 extends along the thickness direction of the vane 12;

[0095] The second connection method is Figures 6a to 6c As shown, the vane auxiliary oil passage includes a second vane auxiliary oil passage 1272 and a third vane auxiliary oil passage 1273; the first movable sliding wall 121 forms a third oil passage between two adjacent raceways 123, and the second movable sliding wall 122 forms a fourth oil passage between two adjacent raceways 123; the second vane auxiliary oil passage 1272 is connected between the third oil passage and the fourth oil passage, and the second vane auxiliary oil passage 1272 is connected to the vane main oil passage 126 inside the vane 12; the second vane auxiliary oil passage 1272 extends along the thickness direction of the vane 12;

[0096] The first movable sliding wall 121 and the second movable sliding wall 122 are both formed with a third sliding vane auxiliary oil passage 1273; the third sliding vane auxiliary oil passage 1273 on the first movable sliding wall 121 is connected to the raceway 123 on the first movable sliding wall 121 and the third oil passage, and the third sliding vane auxiliary oil passage 1273 on the second movable sliding wall 122 is connected to the raceway 123 on the second movable sliding wall 122 and the fourth oil passage; that is, the third sliding vane auxiliary oil passage 1273 on the first movable sliding wall 121 is connected to the raceway 123 on the first movable sliding wall 121, and the third sliding vane auxiliary oil passage 1273 on the second movable sliding wall 122 is connected to the raceway 123 on the second movable sliding wall 122; the third sliding vane auxiliary oil passage 1273 on the first movable sliding wall 121 and the third sliding vane auxiliary oil passage 1273 on the second movable sliding wall 122 are connected through the second sliding vane auxiliary oil passage 1272; the third sliding vane auxiliary oil passage 1273 extends along the width direction of the sliding vane 12;

[0097] The third sliding vane auxiliary oil passage 1273 of the first movable sliding wall 121 and the third sliding vane auxiliary oil passage 1273 of the second movable sliding wall 122 are both connected to the third movable sliding wall 124 and the fourth movable sliding wall 125 .

[0098] Specifically, the first movable sliding wall 121 and the second movable sliding wall 122 are both formed with two rolling ways 123 arranged opposite to each other in the width direction of the sliding wall 12, the third sliding vane auxiliary oil channel 1273 on the first movable sliding wall 121 connects the two rolling ways 123 on the first movable sliding wall 121, and the third sliding vane auxiliary oil channel 1273 on the second movable sliding wall 122 connects the two rolling ways 123 on the second movable sliding wall 122; the flow areas of the second sliding vane auxiliary oil channel 1272 and the third sliding vane auxiliary oil channel 1273 are both smaller than the flow area of ​​the rolling way 123.

[0099] Example 3

[0100] On the basis of Example 1, this embodiment proposes that the first static sliding wall 113 and the second static sliding wall 114 are both formed with a chute main oil passage; the chute main oil passage on the first static sliding wall 113 is connected to the positioning hole 115, and the chute main oil passage on the second static sliding wall 114 is connected to the positioning hole 115;

[0101] The lubricating oil in the main oil passage of the chute on the first static sliding wall 113 and the lubricating oil in the main oil passage of the chute on the second static sliding wall 114 can flow to the third movable sliding wall 124 and the fourth movable sliding wall 125;

[0102] The lubricating oil is supplied to the third movable sliding wall 124 and the fourth movable sliding wall 125 through the main oil channel of the slide groove, thereby increasing the amount of lubricating oil in the third movable sliding wall 124 and the fourth movable sliding wall 125, improving the lubrication effect of the pump body assembly, reducing the wear of the sliding vane 12, extending the life of the pump body assembly, and ensuring the reliable operation of the pump body assembly.

[0103] Furthermore, an oil storage cavity is formed on the bottom wall of the slide groove 112; the first static sliding wall 113 and the second static sliding wall 114 are both formed with slide groove auxiliary oil passages; the slide groove auxiliary oil passage on the first static sliding wall 113 communicates with the oil storage cavity and the slide groove main oil passage on the first static sliding wall 113; the slide groove auxiliary oil passage on the second static sliding wall 114 communicates with the oil storage cavity and the slide groove main oil passage on the second static sliding wall 114;

[0104] When the sliding vane 12 slides along the sliding groove 112 in a direction away from the roller 14 , the lubricating oil in the oil storage chamber can enter the corresponding sliding groove main oil passage through the sliding groove auxiliary oil passage, and then flow to the third movable sliding wall 124 and the fourth movable sliding wall 125 .

[0105] Example 4

[0106] like Figure 7 As shown, this embodiment provides a rotary compressor, which includes a housing 21 and a pump assembly as described in any one of the above items; the housing 21 is formed with an installation cavity, the pump assembly is arranged in the installation cavity, and the cylinder 11 includes one or more;

[0107] In this embodiment, the pump body assembly includes a cylinder 11 as an example, and the pump body assembly also includes a muffler 31, an upper flange 32, a lower flange 33 and a crankshaft 34. The muffler 31, the upper flange 32, the cylinder 11 and the lower flange 33 are arranged in sequence from top to bottom; the muffler 31 cover is arranged at the upper end of the upper flange 32, the upper flange 32 is formed with an upper flange hole, and the lower flange 33 is formed with a lower flange hole; the crankshaft 34 includes a long shaft 341, an eccentric shaft 342 and a short shaft 343 arranged in sequence from top to bottom, the long shaft 341 and the upper flange hole are rotatably matched, the eccentric shaft 342 and the roller 14 are drivingly connected, and the short shaft 343 and the lower flange hole are rotatably matched;

[0108] When the crankshaft 34 is controlled to rotate, the eccentric shaft 342 can rotate with the roller 14, and then the slide 12 slides along the slide groove 112 under the action of the roller 14 and the elastic member 15, so that the cylinder 11 can achieve air intake and exhaust.

[0109] Furthermore, the rotary compressor further includes a motor 22, which is disposed in the mounting cavity and located above the pump body assembly; the motor 22 includes a rotor and a stator, and the rotor is drivingly connected to the long shaft 341;

[0110] The stator includes a stator core and a stator winding. The stator core is arranged on the side wall of the installation cavity, and the stator winding is wound on the stator core. The rotor is rotatably arranged in the installation cavity and includes a rotor core. When alternating current is passed through the stator winding, the rotor can be rotated.

[0111] The rotary compressor further includes an upper cover 23 and a lower cover 24. The upper cover 23 is arranged at the axial upper end of the casing 21, and the lower cover 24 is arranged at the axial lower end of the casing 21. The upper cover 23, the casing 21 and the lower cover 24 are arranged to form a closed installation cavity. A base 25 is arranged at the lower end of the casing 21, and the rotary compressor is fixedly arranged by the base 25. An exhaust pipe 28 is arranged on the upper cover 23, and the exhaust pipe 28 is connected to the installation cavity.

[0112] A gas-liquid separator 26 is provided on one side of the rotary compressor, and the gas-liquid separator 26 forms a gas-liquid separator 26 outlet; the cylinder 11 forms an air intake port and an air exhaust port, the air intake port and the gas-liquid separator 26 outlet are connected through an air intake pipe 27, and the air exhaust port is connected to the installation cavity;

[0113] When the cylinder 11 inhales, the gas in the gas-liquid separator 26 enters the cylinder 11 through the intake pipe 27; the gas in the compression chamber 111 is discharged to the installation chamber and then discharged through the exhaust pipe 28.

[0114] The exemplary embodiments of the present disclosure are specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, configurations or implementations described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent configurations included in the spirit and scope of the appended claims.

Claims

1. A pump assembly for a rotary compressor; characterized in that: The pump assembly comprises: A cylinder (11) and a roller (14), wherein a compression chamber (111) is formed inside the cylinder (11), and a slide groove (112) communicating with the compression chamber (111) is formed on a side wall of the cylinder (11); the slide groove (112) includes a static slide wall, and the roller (14) is rotatably arranged in the compression chamber (111); A slide (12) is slidably arranged in the slide groove (112), the head of the slide (12) abuts against the roller (14), and an elastic member (15) is arranged between the tail of the slide (12) and the bottom wall of the slide groove (112); the slide (12) includes a movable sliding wall located between the head and the tail, and the movable sliding wall and the static sliding wall are arranged relative to each other in the thickness direction or the width direction of the slide (12); The movable sliding wall comprises a first movable sliding wall (121) and a second movable sliding wall (122) which are arranged opposite to each other along the thickness direction of the sliding sheet (12), and the first movable sliding wall (121) and the second movable sliding wall (122) are both formed with a rolling track (123); the static sliding wall comprises a first static sliding wall (113) which is arranged corresponding to the first movable sliding wall (121) and a second static sliding wall (114) which is arranged corresponding to the second movable sliding wall (122), and the first static sliding wall (113) and the second static sliding wall (114) are both formed with a positioning hole (115); the extension direction of the rolling track (123) is parallel to the sliding direction of the sliding sheet (12), and the position of the rolling track (123) corresponds to the position of the positioning hole (115); a rolling body (13) is arranged in the positioning hole (115), a part of the rolling body (13) is rollingly matched with the positioning hole (115), and the other part is rollingly matched with the rolling track (123); When the slide plate (12) slides along the slide groove (112) under the action of the roller (14) and the elastic member (15), the rolling body (13) can roll in the positioning hole (115) and the raceway (123); The movable sliding wall further comprises a third movable sliding wall (124) and a fourth movable sliding wall (125) which are arranged opposite to each other along the width direction of the sliding vane (12); the third movable sliding wall (124) and the fourth movable sliding wall (125) are both connected between the first movable sliding wall (121) and the second movable sliding wall (122); a sliding vane main oil passage (126) is formed inside the sliding vane (12); the sliding vane main oil passage (126) is connected to the third movable sliding wall (124) and the fourth movable sliding wall (125); the sliding vane main oil passage (126) and the rolling path (123) of the first movable sliding wall (121) and the rolling path (123) of the second movable sliding wall (122) are all connected through the sliding vane auxiliary oil passage; The slide vane auxiliary oil passage comprises a first slide vane auxiliary oil passage (1271); the rolling path (123) of the first movable sliding wall (121) is formed with a first oil passage, and the rolling path (123) of the second movable sliding wall (122) is formed with a second oil passage; the first slide vane auxiliary oil passage (1271) is connected between the first oil passage and the second oil passage, and the first slide vane auxiliary oil passage (1271) and the slide vane main oil passage (126) are connected inside the slide vane (12); or, The slide vane auxiliary oil passage comprises a second slide vane auxiliary oil passage (1272) and a third slide vane auxiliary oil passage (1273); the first movable sliding wall (121) forms a third oil passage between two adjacent rolling tracks (123), and the second movable sliding wall (122) forms a fourth oil passage between two adjacent rolling tracks (123); the second slide vane auxiliary oil passage (1272) is connected between the third oil passage and the fourth oil passage, and the second slide vane auxiliary oil passage (1272) and the slide vane main oil passage (126) are connected inside the slide vane (12); the first movable sliding wall (121) and the second movable sliding wall (122) The third slide auxiliary oil channel (1273) is formed on both the first movable sliding wall (121); the third slide auxiliary oil channel (1273) on the first movable sliding wall (121) is connected to the rolling path (123) and the third oil passage on the first movable sliding wall (121); the third slide auxiliary oil channel (1273) on the second movable sliding wall (122) is connected to the rolling path (123) and the fourth oil passage on the second movable sliding wall (122); the third slide auxiliary oil channel (1273) of the first movable sliding wall (121) and the third slide auxiliary oil channel (1273) of the second movable sliding wall (122) are both connected to the third movable sliding wall (124) and the fourth movable sliding wall (125).

2. The pump assembly according to claim 1, characterized in that: The rolling path (123) on the first movable sliding wall (121) and the positioning hole (115) on the first static sliding wall (113) are arranged correspondingly; the rolling path (123) on the second movable sliding wall (122) and the positioning hole (115) on the second static sliding wall (114) are arranged correspondingly; The rolling body (13) is disposed in the positioning hole (115) on the first static sliding wall (113) and the positioning hole (115) on the second static sliding wall (114), so that when the sliding sheet (12) slides along the sliding groove (112), the sliding sheet (12) and the sliding groove (112) do not contact each other.

3. The pump assembly according to claim 1, characterized in that: The rolling body (13) is spherical or cylindrical; the positioning hole (115) can accommodate at least half of the volume of the rolling body (13).

4. The pump assembly according to claim 2, characterized in that: The first movable sliding wall (121) and the second movable sliding wall (122) are both formed with M rolling tracks (123), and the M rolling tracks (123) on the first movable sliding wall (121) and the M rolling tracks (123) on the second movable sliding wall (122) are both arranged at intervals along the width direction of the sliding sheet (12); The first static sliding wall (113) and the second static sliding wall (114) are both formed with M positioning hole groups, and the M positioning hole groups on the first static sliding wall (113) and the M positioning hole groups on the second static sliding wall (114) are both arranged at intervals along the width direction of the sliding plate (12); each of the positioning hole groups includes N positioning holes (115) arranged at intervals along the sliding direction of the sliding plate (12), and each of the positioning holes (115) is provided with the rolling body (13); The M rolling paths (123) on the first movable sliding wall (121) and the M positioning hole groups on the first static sliding wall (113) are arranged in a one-to-one correspondence, and the M rolling paths (123) on the second movable sliding wall (122) and the M positioning hole groups on the second static sliding wall (114) are arranged in a one-to-one correspondence; Wherein, M and N are both positive integers, and M≥2, N≥2.

5. A rotary compressor, characterized in that: The rotary compressor comprises a casing (21) and a pump body assembly according to any one of claims 1 to 4; the casing (21) is formed with an installation cavity, the pump body assembly is arranged in the installation cavity and the pump body assembly also comprises an upper flange (32), a lower flange (33) and a crankshaft (34), the upper flange (32), the cylinder (11) and the lower flange (33) are arranged in sequence from top to bottom; the upper flange (32) is formed with an upper flange hole, and the lower flange (33) is formed with a lower flange hole; the crankshaft (34) comprises a long shaft (341), an eccentric shaft (342) and a short shaft (343) which are arranged in sequence from top to bottom, the long shaft (341) and the upper flange hole are rotatably matched, the eccentric shaft (342) and the roller (14) are drivingly connected, and the short shaft (343) and the lower flange hole are rotatably matched; When the crankshaft (34) is controlled to rotate, the eccentric shaft (342) can rotate with the roller (14).

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