CN107435634B - Compressor pump body, compressor and assembly method of compressor pump body - Google Patents

Compressor pump body, compressor and assembly method of compressor pump body Download PDF

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Publication number
CN107435634B
CN107435634B CN201710637038.3A CN201710637038A CN107435634B CN 107435634 B CN107435634 B CN 107435634B CN 201710637038 A CN201710637038 A CN 201710637038A CN 107435634 B CN107435634 B CN 107435634B
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China
Prior art keywords
limiting
cylinder
plane
pump body
piston
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CN201710637038.3A
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CN107435634A (en
Inventor
杜忠诚
杨森
孔令超
任丽萍
徐嘉
刘喜兴
李直
梁社兵
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Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
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Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005—Axial sealings for working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/20—Rotors

Abstract

The invention relates to a compressor pump body, a compressor and an assembly method of the compressor pump body, and relates to the technical field of compressors. The main technical scheme adopted is as follows: a compressor pump body comprises a cylinder, a piston, a sliding block and a limiting structure. Wherein the piston is mounted within the cylinder and an outer periphery of the piston includes a first plane. A sliding block is arranged between the first plane of the piston and the inner surface of the cylinder; the periphery of the sliding block comprises a second plane and a second cambered surface; and the second plane is in sliding fit with the first plane, and the second cambered surface is matched with the inner surface of the cylinder. The limiting structure is connected with the sliding block and used for limiting the sliding block so that a gap exists between the sliding block and the inner surface of the air cylinder. The invention is mainly used for reducing the friction power consumption between the sliding block and the cylinder in the compressor pump body and improving the performance of the compressor.

Description

Compressor pump body, compressor and assembly method of compressor pump body
Technical Field
The invention relates to the technical field of compressors, in particular to a compressor pump body, a compressor and an assembly method of the compressor pump body.
Background
In the pump body of the existing rotary cylinder piston compressor, a cylinder sleeve is sleeved on a cylinder and is coaxially installed, and a suction and exhaust channel is uniformly distributed on the cylinder sleeve. The piston is arranged in the mounting hole of the cylinder, wherein the piston adopts a non-circular structure, namely the outer circular surface of the piston is an arc surface at two ends, and two parallel surfaces are distributed in the middle (the two outer circular surfaces are oppositely arranged, and the two parallel surfaces are oppositely arranged); the inner surface of the cylinder matched with the piston is also composed of two arc surfaces and two parallel surfaces, so that the structure of the cylinder is complex, and the cost is higher when the mounting hole for placing the piston is processed.
Based on the above-mentioned problem that current commentaries on classics jar piston compressor's pump body exists, current correlation technique adopts slider and piston complex structural style, replaces the structural style of current cylinder parcel piston. Specifically, as shown in fig. 8 and 9, the cylinder 91 includes a mounting hole that penetrates in the axial direction, the inner surface of the mounting hole is an annular arc surface, and the piston 93 is disposed in the mounting hole of the cylinder 91. The piston 93 includes two first sliding planes and two first arc surfaces which are oppositely arranged. Two sliding blocks 92 are further arranged in the mounting hole of the air cylinder 91, each sliding block 92 is arranged between the first sliding plane 121 of the piston 93 and the inner surface of the mounting hole of the air cylinder 91, each sliding block 92 comprises a second sliding plane matched with the first sliding plane, each sliding block 92 further comprises a second cambered surface, and each second cambered surface 92 is in sliding fit with the inner surface of the mounting hole of the air cylinder 91. Two variable volume cavities 911 are formed between the two first arc surfaces of the piston 93 and the inner surface of the mounting hole and between the two second sliding planes of the slider 92. The improvement enables the piston to normally operate through the matching of the two parallel surfaces of the two sliding blocks and the piston, and the second cambered surface on the sliding block is matched with the inner surface of the mounting hole. Therefore, the mounting hole of the cylinder can be a circular hole, the structure is simpler, and compared with the special shape in the prior art, the machining process is simple and the cost is low.
However, the inventors of the present invention have found that the above-described improvement has the following technical problems: the slider and cylinder direct contact, at the compressor operation in-process, the slider excircle slides with cylinder inner circle relatively high speed to there is certain bearing, thereby lead to producing great friction power consumption between slider and the cylinder, and the vice friction power consumption of this friction accounts for more than 80% of total mechanical loss, and is great to the performance influence of compressor.
Disclosure of Invention
In view of the above, the present invention provides a compressor pump body, a compressor and an assembly method of the compressor pump body, and mainly aims to reduce friction power consumption between a slider and a cylinder in the compressor pump body.
In order to achieve the purpose, the invention mainly provides the following technical scheme:
in one aspect, embodiments of the present invention provide a compressor pump body, wherein the compressor pump body includes:
a cylinder;
a piston mounted within the cylinder, the piston having an outer periphery comprising a first plane;
the sliding block is arranged between the first plane of the piston and the inner surface of the cylinder; the periphery of the sliding block comprises a second plane and a second cambered surface; the second plane is in sliding fit with the first plane, and the second cambered surface is matched with the inner surface of the cylinder;
and the limiting structure is connected with the sliding block and used for limiting the sliding block so that a gap exists between the sliding block and the inner surface of the cylinder.
The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.
Preferably, the outer periphery of the piston comprises two oppositely arranged first sliding planes;
the number of the sliding blocks is two, and the second sliding plane of one sliding block is matched with one first sliding plane; the second sliding plane of the other sliding block is matched with the other first sliding plane.
Preferably, the outer circumference of the piston further comprises a first arc surface, and the first arc surface is fitted to the inner surface of the cylinder.
Preferably, the spacing structure comprises a spacing collar; and all the sliding blocks are sleeved in the limiting sleeve ring together.
Preferably, the slider includes:
a mating portion in sliding engagement with the piston; the second plane and the second cambered surface are both positioned on the matching part;
the limiting portion is sleeved in the limiting sleeve ring, and a step used for placing the limiting sleeve ring is formed between the limiting portion and the matching portion.
Preferably, the stop collar comprises a first stop collar and a second stop collar; wherein, the first and the second end of the pipe are connected with each other,
the upper ends of all the sliding blocks are sleeved in the first limiting sleeve ring together; the lower ends of all the sliding blocks are sleeved in the second limiting sleeve ring together.
Preferably, the stopper portion includes:
the first limiting part is sleeved in the first limiting sleeve ring; the first limiting part is positioned at the upper end of the matching part, and the upper end part of the matching part and the first limiting part form a step for placing the first limiting lantern ring;
the second limiting part is sleeved in the second limiting sleeve ring; the second limiting part is located at the lower end of the matching part, and the lower end of the matching part and the second limiting part form a step for arranging the second limiting sleeve ring.
Preferably, the periphery of the limiting part comprises a third cambered surface; the inner circular surface of the limiting sleeve ring is matched with the third cambered surface of the limiting part, and the outer circular surface of the limiting sleeve ring is in clearance fit with the inner surface of the cylinder.
Preferably, the radius of the inner circle of the limiting lantern ring is smaller than that of the second cambered surface of the sliding block.
Preferably, the outer circle radius of the limiting lantern ring is larger than the radius of the second cambered surface of the sliding block.
Preferably, the periphery of the limiting part further comprises a third plane; and the third plane and the second plane on the sliding block are positioned on the same plane.
Preferably, the compressor pump body further comprises:
the outer peripheral surface of the first annular sealing plate is matched with part of the inner circular surface of the first limiting lantern ring and a third plane on the first limiting part;
and the outer peripheral surface of the second annular sealing plate is matched with part of the inner circular surface of the second limiting lantern ring and a third plane on the second limiting part.
Preferably, the compressor pump body further comprises:
the upper flange is fixed at the upper end of the cylinder;
the lower flange is fixed at the lower end of the cylinder;
and the rotating shaft is connected with the piston and is used for driving the piston to work.
In another aspect, an embodiment of the present invention further provides a compressor, where the compressor includes any one of the compressor pump bodies described above.
In another aspect, an embodiment of the present invention further provides an assembling method of a compressor pump body, where the assembling method includes the following steps: and installing the sliding block, the piston and the limiting structure in the cylinder, enabling the sliding block to be positioned between the first plane of the piston and the inner surface of the cylinder, enabling the second plane of the sliding block to be in sliding fit with the first plane of the piston, and enabling the limiting structure to be connected to the sliding block.
Preferably, when the compressor pump body further includes a first annular seal plate and a second annular seal plate, after the step of mounting the slider, the piston and the stopper structure in the cylinder, the method further includes:
mounting the first and second annular seal plates in the cylinder; the outer peripheral surface of the first annular sealing plate is matched with part of the inner circular surface of the first limiting lantern ring and the third plane on the first limiting part; the outer peripheral surface of the second annular sealing plate is matched with part of the inner circular surface of the second limiting lantern ring and a third plane on the second limiting part.
Preferably, when the compressor pump body includes a rotating shaft, the compressor pump further includes: and connecting the rotating shaft with the piston in a matching manner.
Preferably, when the compressor pump body includes an upper flange and a lower flange, after the step of mounting the first and second annular seal plates in the cylinder, the method further includes: and fixing an upper flange at the upper end of the cylinder and fixing a lower flange at the lower end of the cylinder.
Compared with the prior art, the compressor pump body, the compressor and the assembling method of the compressor pump body provided by the invention at least have the following beneficial effects:
according to the compressor pump body provided by the embodiment of the invention, the sliding block is limited by connecting the limiting structure on the sliding block, so that a set gap exists between the outer circle of the sliding block and the inner circle of the cylinder, the friction power consumption between the sliding block and the cylinder is reduced, and the performance of the compressor is improved.
Furthermore, the limiting structure is set to be the limiting sleeve ring, so that all the sliding blocks are sleeved in the limiting sleeve ring together, and the limiting sleeve ring limits the sliding blocks, so that the sliding blocks are prevented from moving outwards (towards the inner surface of the air cylinder) when the compressor works, the outer circle of the sliding blocks is prevented from contacting with the inner surface of the air cylinder, and corresponding friction power consumption is further reduced.
Furthermore, the two limiting lantern rings are arranged to limit the upper end and the lower end of the sliding block simultaneously, so that the limiting effect is good, the contact between the outer circle of the sliding block and the inner circle of the cylinder can be further avoided, and the friction power consumption between the sliding block and the cylinder is further reduced.
Further, the compressor pump body that this embodiment provided is through the excircle (third cambered surface) radius that makes the first spacing portion of slider upper end, the spacing portion of second of lower extreme be less than the excircle (second cambered surface) radius of cooperation portion, sets up like this, is favorable to reducing the relative motion linear velocity between slider and the spacing lantern ring, reduces the friction consumption between slider and the spacing lantern ring. In addition, the upper end and the lower end of the sliding block in the embodiment are limited by the limiting lantern rings, and the limiting lantern rings have certain relative movement speed relative to the air cylinder and certain relative movement speed relative to the sliding block. Compared with the scheme in the prior art, the scheme of limiting the sliding block through the limiting sleeve ring in the embodiment can reduce the relative movement speed of the friction pair (between the limiting sleeve ring and the sliding block and between the limiting sleeve ring and the cylinder), and further is favorable for reducing the friction power consumption of the friction pair.
Further, the compressor pump body that this embodiment provided not only makes the inside structure of compressor pump body compacter through the upper end installation at the piston with first spacing portion, the first annular seal plate of first spacing lantern ring complex, the lower extreme installation of piston with spacing portion of second, the spacing lantern ring complex second annular seal plate of second, and the stability of piston pivoted that still makes is better, further improves the performance of compressor.
On the other hand, an embodiment of the present invention further provides a compressor, and the compressor includes any one of the compressor pump bodies, so that the compressor provided in the embodiment of the present invention has any one of the beneficial effects described above, which are not repeated herein.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a structural exploded view of a compressor pump body according to an embodiment of the present invention;
FIG. 2 is a sectional view of a compressor pump body according to an embodiment of the present invention;
FIG. 3 is an exploded view of a slider and a retainer ring of a compressor pump according to an embodiment of the present invention;
FIG. 4 is a structural exploded view of a compressor pump body for mounting components within a cylinder according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a cylinder assembly without a limiting structure according to an embodiment of the present invention;
FIG. 6 is a schematic view of the cylinder assembly of FIG. 5 after installation of a spacing structure;
FIG. 7 is a schematic view of the cylinder assembly of FIG. 6 after installation of the annular seal plate;
FIG. 8 is a prior art exploded view of a cylinder assembly in a compressor pump body;
fig. 9 is a schematic structural diagram of a cylinder assembly in a compressor pump body according to the prior art.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the predetermined object, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Example 1
In this embodiment, as shown in fig. 1 and fig. 2, the compressor pump body in this embodiment includes a cylinder 1, a piston 2, a slider 3, and a limiting structure 4. Wherein, piston 2 movably installs in cylinder 1, and the periphery of piston 2 includes first plane and first cambered surface. A sliding block 3 is arranged between the first plane of the piston 2 and the inner surface of the cylinder 1; the first arc surface of the piston 2 is fitted to the inner surface of the cylinder 1. The periphery of the sliding block 3 comprises a second plane and a second cambered surface, and the second plane on the sliding block 3 is matched with the first plane on the piston 2 so as to ensure that the piston 2 can normally run in the cylinder; and the second cambered surface on the sliding block 3 is matched with the inner surface of the cylinder 1. The limiting structure is connected with the sliding block 3 and used for limiting the sliding block 3 so that a gap exists between the sliding block 3 and the inner surface of the cylinder 1.
The compressor pump body that this embodiment provided is through connecting limit structure on slider 3, and is spacing to slider 3 to there is the settlement clearance between the excircle of messenger's slider 3 and the interior circle of cylinder 1, thereby has reduced the friction consumption between slider 3 and the cylinder 1, and then has promoted the performance of compressor.
Preferably, as shown in fig. 4, in the compressor pump body provided in this embodiment, the outer periphery of the piston 2 includes two first flat surfaces arranged oppositely and two first arc surfaces arranged oppositely; and the first plane and the first cambered surface are connected to form a circle of peripheral surface of the piston 2. As shown in fig. 2 to 5, the outer circumference of the slider 3 includes a second arc surface and a second flat surface; and the second plane is opposite to and connected with the second cambered surface. The number of the sliding blocks 3 is two, and the second plane of one sliding block 3 is matched with one first plane on the piston 2; the second plane of the other slide 3 cooperates with the other first plane on the piston 2. Wherein, two sliders 3 are oppositely arranged in the cylinder 1, and the second cambered surfaces on the two sliders 3 are coaxial.
In addition, the compressor pump body in this embodiment and the following embodiments includes: an upper flange 7, a lower flange 8 and a rotating shaft 6. Wherein, the upper flange 7 is fixed on the upper end of the cylinder 1 through the screw; the lower flange 8 is fixed to the lower end of the cylinder 1 by screws. The central axis of the rotating shaft 6 is eccentrically arranged with the central axis of the cylinder 1, and the rotating shaft 6 is connected with the piston 2 and drives the piston 2 to rotate.
Example 2
Preferably, the present embodiment provides a compressor pump body, and compared with the previous embodiment, the present embodiment further designs the limiting structure as follows:
as shown in fig. 2 to 6, the spacing structure in this embodiment includes a spacing collar 4. Wherein, the limiting sleeve ring 4 is positioned in the cylinder 1, and all the sliding blocks 3 are sleeved in the limiting sleeve ring 4 together. Here, this embodiment is through setting limit structure to the spacing lantern ring 4 to make all sliders 3 establish together in the spacing lantern ring 4, set up like this and make the spacing lantern ring 4 carry on spacingly to the slider, in order to avoid at compressor during operation, slider 3 outwards movement (towards the internal surface of cylinder), thereby avoid outer disc (second cambered surface) of slider 3 and 1 internal surface contact of cylinder, and then reduce corresponding friction consumption.
Here, the position limiting collar 4 in this embodiment may be sleeved on the end portion of the slider 3 (the upper end or/and the lower end of the slider), or/and may be sleeved on the middle position of the slider 3.
Preferably, in order to make the sliding block 3 and the position-limiting collar 4 fit well, the sliding block 3 is designed into the following structure: the sliding block 3 comprises a matching part and a limiting part; wherein, the quantity of spacing portion is unanimous with the quantity of spacing lantern ring. The matching part is mainly in sliding fit with the piston 2, and the second plane and the second cambered surface are both positioned on the matching part. The limiting portion is sleeved in the limiting sleeve ring, and a step for arranging the limiting sleeve ring is formed between the limiting portion and the matching portion. Preferably, the periphery of the limiting part comprises a third cambered surface; wherein, the interior disc of spacing lantern ring 4 and the third cambered surface cooperation of spacing portion, the outer disc of spacing lantern ring 4 and the internal surface clearance fit of cylinder 1. Preferably, the periphery of the limiting part further comprises a third plane; wherein, the third plane and the second plane on the slide block 3 are positioned on the same plane. Preferably, the radius of the third arc surface and the radius of the inner circle of the limit collar 4 are both smaller than the radius of the second arc surface of the slider (the third arc surface, the second arc surface and the limit collar on the slider are all coaxially arranged, that is, the center of circle of the third arc surface, the center of circle of the second arc surface and the center of circle of the inner circle of the limit collar are all located on the axis of the inner circle of the cylinder).
The compressor pump body that this embodiment provided is less than the excircle (second cambered surface) radius of cooperation portion through the excircle (third cambered surface) radius that makes the spacing portion on the slider, sets up like this, is favorable to reducing the relative motion linear velocity between slider and the spacing lantern ring, reduces the friction consumption of compressor.
Preferably, the outer radius of the stop collar 4 in this embodiment and the following embodiments is larger than the radius of the second arc surface of the sliding block 3, so as to further ensure that a set gap exists between the sliding block 3 and the inner surface of the cylinder 1. In addition, a lubricating oil seal exists at the position of a gap between the sliding block 3 and the inner surface of the cylinder 1 so as to ensure the sealing performance between the compression cavity and the air inlet cavity.
Example 3
Preferably, the present embodiment provides a compressor pump body, compared to embodiment 2, as shown in fig. 1 to 4 and 6, the number of the position-limiting collars 4 in the present embodiment is two, that is, the first position-limiting collar 41 and the second position-limiting collar 42; wherein, the upper ends of all the sliding blocks 3 are sleeved in the first limiting lantern ring 41 together; the lower ends of all the sliding blocks 3 are sleeved in the second limiting lantern ring 42 together.
This embodiment is spacing simultaneously with the upper end and the lower extreme to slider 3 through setting up two spacing lantern rings, and the spacing stability that sets up like this is better, can further avoid slider 3 and cylinder 1's internal surface contact, further reduces the friction consumption between slider 3 and the cylinder 1 to and reduce the friction consumption of compressor, improve the performance of compressor.
Preferably, as shown in fig. 1 to 6, the present embodiment further designs the slider 3 as follows:
as shown in fig. 1 to 6, the slider 3 in the present embodiment includes, in order from top to bottom: a first limiting part 31, a matching part 32 and a second limiting part 33; wherein, the matching part 32 is matched with the piston 2 in a sliding way; wherein, the second plane and the second cambered surface on the sliding block 3 are both positioned on the matching part 32. The first position-limiting portion 31 is sleeved in the first position-limiting sleeve ring 41; the first position-limiting portion 31 is located at the upper end of the fitting portion 32, and the upper end of the fitting portion 32 and the first position-limiting portion 31 form a step for placing the first position-limiting collar 41. The second position-limiting portion 33 is sleeved in the second position-limiting ring 42; the second position-limiting portion 33 is located at the lower end of the fitting portion 32, and the lower end of the fitting portion 32 and the second position-limiting portion 33 form a step for placing the second position-limiting collar 42.
Preferably, as shown in fig. 1, 3, 4 and 6, the peripheries of the first limiting portion 31 and the second limiting portion 33 on the sliding block 3 both include a third arc surface and a third plane. Wherein, the inner circle surface of the first position-limiting sleeve ring 41 is matched with the third arc surface of the first position-limiting part 31, and the outer circle surface of the first position-limiting sleeve ring 41 is matched with the inner surface of the cylinder 1. The inner circular surface of the second limit collar 42 is matched with the third cambered surface of the second limit part 33, and the outer circular surface of the second limit collar 42 is matched with the inner surface of the cylinder 1.
Preferably, the radius of the inner circle of the first position-limiting collar 41 and the second position-limiting collar 42 and the radius of the third arc surface are both smaller than the radius of the second arc surface of the slider 3 (since the second arc surfaces of the first position-limiting collar, the second position-limiting collar and the slider are coaxially mounted with the cylinder, the second arc surface is closer to the cylinder for the third arc surface).
The compressor pump body that this embodiment provided is less than the excircle (second cambered surface) radius of cooperation portion through the excircle (third cambered surface) radius that makes the first spacing portion of slider upper end, the spacing portion of second of lower extreme, sets up like this, is favorable to reducing the relative motion linear velocity between slider and the spacing lantern ring, reduces the friction consumption between slider and the spacing lantern ring. The upper end and the lower end of the sliding block in the embodiment are limited by the limiting lantern ring, the limiting lantern ring has certain relative movement speed relative to the cylinder, and meanwhile, the limiting lantern ring has certain relative movement speed relative to the sliding block. Compared with the scheme in the prior art, the scheme of limiting the sliding block through the limiting sleeve ring in the embodiment can reduce the relative movement speed of the friction pair (between the limiting sleeve ring and the sliding block and between the limiting sleeve ring and the cylinder), and further is favorable for reducing the friction power consumption of the friction pair.
In addition, in addition to the above design in the present embodiment, there is also a design idea that: the number of the limiting lantern rings is one, and the limiting lantern rings are sleeved at the middle position of the sliding block. Correspondingly, the slider includes first cooperation portion, spacing portion and second cooperation portion from the top down in proper order. Wherein, the lower tip of spacing portion and first cooperation portion forms the stair structure, spacing portion and second cooperation portion form the stair structure to form the recess that is used for holding spacing lantern ring between spacing portion and the cooperation portion. In a similar way, the scheme that the design limits the sliding block through the limiting sleeve ring can also reduce the relative movement speed of the friction pair (between the limiting sleeve ring and the sliding block and between the limiting sleeve ring and the cylinder), and further is favorable for reducing the friction power consumption of the friction pair.
Example 4
Preferably, the present embodiment provides a compressor pump body, and the present embodiment is further designed based on embodiment 3 as follows: as shown in fig. 1, 2, 4 and 7, the compressor pump body in this embodiment further includes: a first annular seal plate 51 and a second annular seal plate 52. The shape of the first annular sealing plate 51 is consistent with the shape of the region surrounded by the first position-limiting collar 41 and the sliding block 3, a part of the outer peripheral surface of the first annular sealing plate 51 is in clearance fit with a part of the inner circular surface of the first position-limiting collar 41, and the other part of the outer peripheral surface is in fit with the third plane on the sliding block 3. The shape of the second annular sealing plate 52 is consistent with the shape of the area surrounded by the second limit lantern ring 42 and the sliding block 3, part of the outer peripheral surface of the second annular sealing plate 52 is in clearance fit with part of the inner circular surface of the second limit lantern ring 42, and the other part of the outer peripheral surface is in fit with the third plane on the sliding block 3. The first annular seal plate 51 is located at the upper end of the piston 2, and the second annular seal plate 52 is located at the lower end of the piston 2.
The compressor pump body that this embodiment provided is through the first annular seal plate 51 of installation and first spacing portion 31, the first spacing lantern ring 41 complex at the upper end of piston 2, the second annular seal plate 52 of installation and the spacing portion 33 of second, the spacing lantern ring 42 complex at the lower extreme of piston 2, not only makes the structure of the inside of compressor pump body more compact, and the stability of piston 2 pivoted that still makes is better, further improves the performance of compressor.
In addition, for the compressor pump body provided by embodiment 2, if only one limiting lantern ring is sleeved at the upper end or the lower end of the sliding block, then the compressor pump body only needs to be provided with one annular sealing plate, and similarly, the shape of the annular sealing plate is consistent with the shape of the area surrounded by the limiting lantern ring and the sliding block, part of the outer peripheral surface of the annular sealing plate is in clearance fit with part of the inner circular surface of the limiting lantern ring, and the other part of the outer peripheral surface is in fit with the third plane on the sliding block.
Example 5
The present embodiment provides an assembling method of a compressor pump body as provided in the above embodiments, as shown in fig. 1 to 7, the assembling method mainly includes the following steps: the sliding block 3, the piston 2 and the limiting structure 4 are arranged in the cylinder 1, so that the sliding block 3 is positioned between the first plane of the piston 2 and the inner surface of the cylinder 1, the second plane of the sliding block 3 is in sliding fit with the first plane of the piston 2, and the limiting structure 4 is connected to the sliding block 3.
Specifically, in this step, the sliding block 3 may be assembled in the cylinder 1, and then the piston 2 may be installed in the installation hole surrounded by the sliding block 3. For the installation of the limiting structure 4, the assembly can be performed before the sliding block 3 is installed in the cylinder 1, or after the sliding block 3 is installed in the cylinder 1, or of course, the assembly can be performed after the piston is assembled, specifically according to the actual situation (for example, if the limiting sleeve ring is sleeved at the middle position of the sliding block, it is better to connect the limiting sleeve ring to the sliding block before the sliding block is installed in the cylinder).
Preferably, when the compressor pump body further comprises a first annular sealing plate 51 and a second annular sealing plate 52, after the step of mounting the slider 3, the piston 2 and the stop structure 4 inside the cylinder 1, it further comprises: a step of mounting the first and second annular seal plates 51 and 52 in the cylinder 1; wherein, the outer peripheral surface of the first annular sealing plate 51 is matched with part of the inner circular surface of the first limiting lantern ring and the third plane on the first limiting part; the outer peripheral surface of the second annular seal plate 52 is fitted to a part of the inner circular surface of the second position restricting collar, and a third plane on the second position restricting portion.
In addition, when the compressor pump body includes the rotating shaft 6, it further includes: and (3) connecting the rotating shaft 6 with the piston 2 in a matching way.
When the compressor pump body includes an upper flange and a lower flange, after the step of mounting the first annular seal plate 51 and the second annular seal plate 52 in the cylinder 1, the method further includes: and fixing an upper flange 7 to the upper end of the cylinder 1 and a lower flange 8 to the lower end of the cylinder 1. For the step, if the number of the limiting lantern rings is one, and the limiting lantern rings are sleeved at the middle position of the sliding block, no annular sealing plate is needed to be arranged, and then the scheme can assemble the upper flange 7 and the lower flange 8 after the step of installing the sliding block, the piston and the limiting structure in the cylinder.
Specifically, taking the case where the limiting structure includes the first limiting collar and the second limiting collar as an example, the assembly of the compressor pump body is described in detail as follows: as shown in fig. 1 to 7, the rotating shaft 6 penetrates the piston 2, and the support surfaces of the two are mutually matched and assembled; the piston 2 assembled with the rotating shaft 6 is installed in the installation hole formed by the pair of sliders 3 (a schematic structural view of the piston and the sliders assembled in the cylinder is shown in fig. 5). The first limiting lantern ring 41 and the second limiting lantern ring 42 are respectively sleeved at the upper end step position and the lower end step position of the sliding block 3, and the first limiting lantern ring 41 and the second limiting lantern ring 42 are matched with the inner circle of the cylinder 1 and the cylinder 1 is coaxially matched with the second circular arc on the sliding block 3 (the structure after assembly is shown in fig. 6). In the space enclosed by the slider 3 and the first limit collar 51, a first annular sealing plate 51 which is the same as the first limit collar 51 in shape is assembled, the first annular sealing plate 41 is in clearance fit with the inner circle of the first limit collar 41, similarly, in the space enclosed by the slider 3 and the second limit collar 52, a second annular sealing plate 52 which is the same as the second limit collar 52 in shape is assembled, and the second annular sealing plate 52 is in clearance fit with the inner circle of the second limit collar 42 (the assembled structure is shown in fig. 7). And finally, fixing the upper flange 7 and the lower flange 8 at the upper end and the lower end of the cylinder 1 respectively through screw holes, wherein the upper flange 7 and the lower flange 8 are coaxial and have an eccentric value of e with the axis of the rotating shaft 6, and thus, assembling the pump body of the compressor is completed.
Example 6
In another aspect, the present embodiment provides a compressor, which includes a flow divider assembly, an upper cover assembly, a housing assembly, a motor assembly, a compressor pump body, and a lower cover. The compressor pump body in this embodiment is the compressor pump body according to any one of the above embodiments.
According to the compressor provided by the embodiment, by adopting the compressor pump body in any one of the embodiments, the friction power consumption of the compressor can be reduced, and the energy efficiency and the reliability of the compressor are improved.
In summary, according to the compressor pump body, the compressor and the assembling method of the compressor provided by the embodiment of the invention, the slide block is limited by connecting the limiting structure on the slide block, so that a set gap exists between the outer circle of the slide block and the inner circle of the cylinder, the friction power consumption between the slide block and the cylinder is reduced, and the performance of the compressor is improved.
In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.

Claims (13)

1. A compressor pump body, characterized in that it comprises:
a cylinder;
a piston mounted within the cylinder, the piston having an outer periphery comprising a first plane; the periphery of the piston also comprises a first cambered surface, and the first cambered surface is matched with the inner surface of the cylinder;
the sliding block is arranged between the first plane of the piston and the inner surface of the cylinder; the periphery of the sliding block comprises a second plane and a second cambered surface; the second plane is in sliding fit with the first plane, and the second cambered surface is matched with the inner surface of the cylinder;
the limiting structure is connected with the sliding block and used for limiting the sliding block so that a gap exists between the sliding block and the inner surface of the air cylinder;
wherein the limiting structure comprises a limiting lantern ring; wherein all the sliding blocks are sleeved in the limiting sleeve ring together;
wherein the slider includes:
a mating portion in sliding engagement with the piston; the second plane and the second cambered surface are both positioned on the matching part;
the limiting part is sleeved in the limiting sleeve ring, and a step for arranging the limiting sleeve ring is formed between the limiting part and the matching part;
the limiting lantern ring comprises a first limiting lantern ring and a second limiting lantern ring; wherein the content of the first and second substances,
the upper ends of all the sliding blocks are sleeved in the first limiting sleeve ring together; the lower ends of all the sliding blocks are sleeved in the second limiting sleeve ring together;
wherein, spacing portion includes:
the first limiting part is sleeved in the first limiting sleeve ring; the first limiting part is positioned at the upper end of the matching part, and the upper end part of the matching part and the first limiting part form a step for arranging the first limiting lantern ring;
the second limiting part is sleeved in the second limiting sleeve ring; the second limiting part is located at the lower end of the matching part, and the lower end of the matching part and the second limiting part form a step for arranging the second limiting sleeve ring.
2. The compressor pump body of claim 1,
the periphery of the piston comprises two oppositely arranged first planes;
the number of the sliding blocks is two, and the second plane of one sliding block is in sliding fit with one first plane of the piston; the second plane of the other slide block is in sliding fit with the other first plane of the piston.
3. The compressor pump body of claim 1, wherein an outer periphery of the stopper portion includes a third arc surface;
the inner circular surface of the limiting sleeve ring is matched with the third cambered surface of the limiting part, and the outer circular surface of the limiting sleeve ring is in clearance fit with the inner surface of the cylinder.
4. The compressor pump body of claim 1, wherein the inner circle radius of the check collar is less than the radius of the second arc of the slider.
5. The compressor pump body of claim 1, wherein an outer radius of the stop collar is greater than a radius of the second cambered surface of the slider.
6. The compressor pump body of claim 1, wherein the outer perimeter of the stop portion further comprises a third flat surface; wherein the third plane and the second plane are located on the same plane.
7. The compressor pump body of claim 6, further comprising:
the outer peripheral surface of the first annular sealing plate is matched with part of the inner circular surface of the first limiting lantern ring and a third plane on the first limiting part;
and the outer peripheral surface of the second annular sealing plate is matched with part of the inner circular surface of the second limiting lantern ring and a third plane on the second limiting part.
8. The compressor pump body of claim 1, further comprising:
the upper flange is fixed at the upper end of the cylinder;
the lower flange is fixed at the lower end of the cylinder;
the pivot, the pivot with the central axis eccentric settings of cylinder, just the pivot with the piston is connected, is used for the drive the piston rotates.
9. Compressor, characterized in that it comprises a compressor pump body according to any one of claims 1 to 8.
10. Method for assembling a compressor pump body according to any one of claims 1 to 8, characterized in that it comprises the following steps:
and installing the sliding block, the piston and the limiting structure in the cylinder, enabling the sliding block to be positioned between the first plane of the piston and the inner surface of the cylinder, enabling the second plane of the sliding block to be in sliding fit with the first plane of the piston, and enabling the limiting structure to be connected to the sliding block.
11. The method of assembling a compressor pump body of claim 10, wherein when said compressor pump body further includes a first annular seal plate and a second annular seal plate, after the step of installing said slider, piston and retaining structure within said cylinder, further comprising:
mounting the first and second annular seal plates in the cylinder; the outer peripheral surface of the first annular sealing plate is matched with part of the inner circular surface of the first limiting lantern ring and the third plane on the first limiting part; the outer peripheral surface of the second annular sealing plate is matched with part of the inner circular surface of the second limiting lantern ring and a third plane on the second limiting part.
12. The method for assembling a compressor pump body according to claim 10, wherein when said compressor pump body comprises a rotating shaft, further comprising the step of connecting said rotating shaft with a piston.
13. The method of assembling a compressor pump body according to claim 11, wherein when the compressor pump body includes an upper flange and a lower flange, after the step of mounting the first and second annular seal plates in the cylinder, further comprising: and fixing an upper flange at the upper end of the cylinder and fixing a lower flange at the lower end of the cylinder.
CN201710637038.3A 2017-07-31 2017-07-31 Compressor pump body, compressor and assembly method of compressor pump body Active CN107435634B (en)

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CN108799106A (en) * 2018-07-18 2018-11-13 珠海格力电器股份有限公司 Pump assembly, fluid machinery and heat transmission equipment
CN108916045B (en) * 2018-07-18 2024-04-02 珠海格力电器股份有限公司 Pump body assembly, fluid machinery and heat exchange equipment
CN108980041A (en) * 2018-07-18 2018-12-11 珠海格力电器股份有限公司 Pump assembly, fluid machinery and heat exchange equipment
CN108869278B (en) * 2018-07-18 2023-12-08 珠海格力电器股份有限公司 Pump body assembly, fluid machinery and heat exchange equipment
CN108916046B (en) * 2018-07-18 2024-04-16 珠海格力电器股份有限公司 Pump body assembly, fluid machinery and heat exchange equipment
CN108799104B (en) * 2018-07-18 2024-04-02 珠海格力电器股份有限公司 Pump body assembly, fluid machinery and heat exchange equipment
CN108799105B (en) * 2018-07-18 2023-10-03 珠海格力电器股份有限公司 Pump body assembly, fluid machinery and heat exchange equipment
CN108799108A (en) * 2018-07-18 2018-11-13 珠海格力电器股份有限公司 Pump assembly, fluid machinery and heat transmission equipment
CN108799107A (en) * 2018-07-18 2018-11-13 珠海格力电器股份有限公司 Pump assembly, fluid machinery and heat transmission equipment
CN108799109B (en) * 2018-07-18 2024-04-02 珠海格力电器股份有限公司 Pump body assembly, fluid machinery and heat exchange equipment
CN108869279B (en) * 2018-07-18 2024-04-16 珠海格力电器股份有限公司 Pump body assembly, fluid machinery and heat exchange equipment

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CN105570130B (en) * 2016-02-16 2018-11-27 珠海格力节能环保制冷技术研究中心有限公司 Compressor pump structure and compressor
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CN206972543U (en) * 2017-07-31 2018-02-06 珠海格力节能环保制冷技术研究中心有限公司 A kind of compressor pump and compressor

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