CN117386612A - Compression assembly and compressor with same - Google Patents

Compression assembly and compressor with same Download PDF

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Publication number
CN117386612A
CN117386612A CN202210786832.5A CN202210786832A CN117386612A CN 117386612 A CN117386612 A CN 117386612A CN 202210786832 A CN202210786832 A CN 202210786832A CN 117386612 A CN117386612 A CN 117386612A
Authority
CN
China
Prior art keywords
cylinder
suction
outlet
air
compression assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210786832.5A
Other languages
Chinese (zh)
Inventor
马永
童为政
李慧
赵杰
赵文钊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Meizhi Precision Manufacturing Co Ltd
Original Assignee
Guangdong Meizhi Precision Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Meizhi Precision Manufacturing Co Ltd filed Critical Guangdong Meizhi Precision Manufacturing Co Ltd
Priority to CN202210786832.5A priority Critical patent/CN117386612A/en
Publication of CN117386612A publication Critical patent/CN117386612A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
    • F04C18/3564—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The invention discloses a compression assembly and a compressor with the same, wherein the compression assembly comprises: the inner side of the cylinder is defined with an air outlet cavity, the cylinder is provided with a first suction channel extending along the radial direction of the cylinder, the first suction channel is provided with a first outlet, and the first outlet penetrates through the inner wall of the cylinder and is communicated with the air cavity; the air suction piece is arranged on at least one side of the air cylinder in the axial direction, a second suction channel is formed on the air suction piece, the second suction channel extends along the radial direction of the air cylinder, and is provided with a second outlet which penetrates through the air suction piece, faces to one side surface of the air cavity in the axial direction of the air cylinder and is communicated with the air cavity; and when the piston is positioned at the starting position of each cycle of the cyclic movement, the piston seals the first outlet and the second outlet. According to the compression assembly provided by the invention, the suction flow area of the compression assembly can be effectively increased and the unit suction amount of the compression assembly can be increased under the premise of not changing the size of the first outlet on the cylinder.

Description

Compression assembly and compressor with same
Technical Field
The invention relates to the technical field of compression, in particular to a compression assembly and a compressor with the compression assembly.
Background
The rolling rotor compressor consists of casing, motor, crankshaft, piston, cylinder, sliding vane, etc. The piston is positioned in the cylinder, and when the crankshaft rotates around the rotation center, the piston is closely attached to the inner surface of the cylinder to rotate. Thus, a crescent space can be formed between the outer surface of the piston and the inner surface of the cylinder. The sliding vane which reciprocates up and down divides the space range into two independent parts, one part is a suction cavity, and the other part is a compression cavity. The sliding vane is pressed on the outer surface of the piston by means of a spring.
The rolling rotor compressor in the related art is limited by the height of the cylinder and the sliding block groove of the cylinder, the sectional area of the suction hole is increased and limited, and then the size of the air inlet is increased, the suction closing angle is increased, leakage reflux is caused, the refrigerating capacity of the compressor is reduced, and the efficiency is reduced.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention aims to provide a compression assembly which can increase the suction flow area, further increase the unit suction amount and improve the energy efficiency.
The invention also provides a compressor with the compression assembly.
The compression assembly according to the first aspect of the present invention comprises: the inner side of the cylinder is provided with a first suction channel extending along the radial direction of the cylinder, the first suction channel is provided with a first outlet, and the first outlet penetrates through the inner wall of the cylinder and is communicated with the air cavity; the air suction piece is arranged on at least one side of the air cylinder in the axial direction, a second suction channel is formed on the air suction piece, the second suction channel extends along the radial direction of the air cylinder, and is provided with a second outlet which penetrates through the air suction piece, faces to one side surface of the air cavity in the axial direction of the air cylinder and is communicated with the air cavity; the piston is arranged in the air cavity in a rolling way, and when the piston is positioned at the starting position of each cycle of cyclic movement, the piston seals the first outlet and the second outlet.
According to the compression assembly, the first suction channel and the second suction channel are respectively arranged on the air cylinder and the air suction piece, and the first outlet of the first suction channel and the second outlet of the second suction channel are self-sealed by virtue of the piston, so that the suction flow area of the compression assembly can be effectively increased and the unit suction capacity of the compression assembly can be increased on the premise of not changing the size of the first outlet on the air cylinder. And because the gas in the second suction channel enters the air cavity along the axial direction of the air cylinder, but not enters the air cavity along the radial direction, the air flow entering the air cavity from the second outlet can be prevented from striking the piston, the vortex generated when the gas flows through the first outlet and the second outlet is effectively reduced, the suction resistance of the compressor is reduced, and the energy efficiency of the compressor is improved.
In some embodiments, the second outlet is disposed in a first area surrounded by a first circular arc segment, a first straight line segment, a second straight line segment, and a second circular arc segment, the first suction passage has a first projection line and a second projection line extending along a radial direction of the cylinder in a projection plane perpendicular to the axis of the cylinder, the inner wall of the cylinder has a third projection line, the first straight line segment coincides with an extension line of the first projection line, the second straight line segment coincides with an extension line of the second projection line, the first circular arc segment coincides with the third projection line, and a distance R between any point on the second circular arc segment and a central axis of the cylinder s R+e+a+b, where R is 1/2 of the piston diameter and E is the eccentric amount of the crankshaft driving the piston to rotate; a is the chamfer angle of the piston, b is the reserved allowance for sealing, and b is 0.5mm-1.5mm.
In some embodiments, the second suction channel satisfies: 1.25mm -1 ≤S/V≤13.5mm -1 Wherein S is the area of the second outlet in the air cavity, and V is the volume of the air cavity.
In some embodiments, the second outlet includes a first bore section and a second bore section, the second bore section being connected inside the first bore section in a radial direction of the cylinder, a length of the second bore section in a circumferential direction of the cylinder being greater than a length of the first bore section in the circumferential direction of the cylinder, an end of the first bore section in the piston rotation direction being flush with an end of the second bore section in the piston rotation direction.
In some embodiments, the first suction passage has a first inlet penetrating through an outer circumferential wall of the cylinder, the second suction passage has a second inlet, and the cylinder is further formed with a connection passage extending along an axis of the cylinder and connected between the first suction passage and the second inlet.
In some embodiments, the connecting channel extends parallel to the central axis of the cylinder in a direction from the cylinder towards the getter, or the connecting channel extends obliquely towards the central axis of the cylinder.
In some embodiments, in a projection plane perpendicular to the axis of the cylinder, the connecting channel is disposed in a second area, the second area is formed by encircling a third straight line segment, a fourth straight line segment, a third circular arc segment and a fourth circular arc segment, in a projection plane perpendicular to the axis of the cylinder, a first projection line and a second projection line of the first suction channel extending along the radial direction of the cylinder are the third straight line segment and the fourth straight line segment respectively, the inner wall of the cylinder is provided with a third projection line, the outer wall of the cylinder is provided with a fourth projection line, the third circular arc segment is overlapped with the third projection line, and the fourth circular arc segment is overlapped with the fourth projection line.
In some embodiments, the second suction passage is formed by a recess of a side surface of the suction member facing the cylinder.
In some embodiments, the cylinder is one, and both ends of the cylinder in the axial direction are provided with an upper bearing and a lower bearing, respectively, at least one of which is formed as the getter.
In some embodiments, a plurality of cylinders are provided, a partition plate is disposed between two adjacent cylinders, upper bearings and lower bearings are disposed on both sides of the plurality of cylinders in an axial direction, and at least one of the upper bearings, the lower bearings and the partition plate is formed as the getter.
The compressor according to the second aspect of the present invention comprises the compression assembly according to the first aspect of the present invention.
According to the compressor of the invention, the whole performance of the compressor is improved by arranging the compression assembly of the first aspect.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic illustration of a compression assembly according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a perspective view of the compressor shown in FIG. 1;
FIG. 3 is a schematic view of the cylinder shown in FIG. 1;
FIG. 4 is a schematic view of a getter according to one embodiment of the invention;
FIG. 5 is a schematic view of a getter according to another embodiment of the invention;
FIG. 6 is a schematic view of the compression assembly shown in FIG. 1, with a first area shaded;
FIG. 7 is a schematic view of the compression assembly shown in FIG. 1 with a second area shaded;
FIG. 8 is a schematic view of the cylinder shown in FIG. 3;
FIG. 9 is a cross-sectional view of a cylinder along line B-B in FIG. 8 according to one embodiment of the present invention;
fig. 10 is a cross-sectional view of a cylinder according to another embodiment of the present invention taken along line B-B in fig. 8.
Reference numerals:
100. a compression assembly;
10. a cylinder;
11. an air cavity;
12. a first suction passage; 121. a first inlet; 122. a first outlet;
13. a connection channel;
14. a slide groove;
20. a getter; 21. a second suction passage; 211. a second inlet;
212. a second outlet; 2121. a first bore section; 2122. a second bore section;
a1, a first area;
31. a first arc segment; 32. a first straight line segment; 33. a second straight line segment; 34. a second arc segment;
a2, a second area;
41. a third straight line segment; 42. a fourth straight line segment; 43. a third arc segment; 44. and a fourth arc segment.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
A compression assembly 100 according to an embodiment of the first aspect of the present invention is described below with reference to fig. 1-10.
As shown in fig. 1, a compression assembly 100 according to an embodiment of the first aspect of the present invention includes: a cylinder 10, a getter 20 and a piston.
Specifically, as shown in fig. 1 and 2, the inner side of the cylinder 10 defines an air chamber 11, the cylinder 10 is formed with a first suction passage 12, the first suction passage 12 extends radially along the cylinder 10, the first suction passage 12 has a first outlet 122, the first outlet 122 penetrates through the inner wall of the cylinder 10, and the first outlet 122 communicates with the air chamber 11; i.e. the first suction channel 12 is connected and communicates with the air chamber 11 via the first outlet 122. For example, the first suction passage 12 has a first inlet and a first outlet 122, and gas that enters the first suction passage 12 from the first inlet 121 may enter the air chamber 11 from the first outlet 122 to be compressed by a piston that is to be provided in the air chamber 11. Since the first suction passage 12 extends radially along the cylinder 10 and penetrates the inner wall of the cylinder 10, the gas in the first suction passage 12 is introduced into the cylinder 10 from the radial direction of the cylinder 10.
As shown in fig. 1 and 4, the air suction member 20 is provided on at least one side of the cylinder 10 in the axial direction, that is, the air suction member 20 may be provided only on one side of the cylinder 10 in the axial direction, or the air suction member 20 may be provided on both sides of the cylinder 10 in the axial direction. For example, when the axial direction of the cylinder 10 is in the up-down direction, the air intake member 20 may be provided only on the upper side of the cylinder 10, the air intake member 20 may be provided only on the lower side of the cylinder 10, or the air intake member 20 may be provided on both the upper and lower sides of the cylinder 10.
As shown in fig. 1 and 4, the suction member 20 is formed with a second suction passage 21, the second suction passage 21 extending in the radial direction of the cylinder 10, the second suction passage 21 having a second outlet 212, the second outlet 212 penetrating the suction member 20 toward one side surface of the air chamber 11 in the axial direction of the cylinder 10 and communicating with the air chamber 11. That is, the second outlet 212 of the second suction passage 21 is formed at a side surface of the suction member 20 facing the cylinder 10, and the second suction passage 21 communicates with the air chamber 11 through the second outlet 212. For example, the second suction passage 21 has a second inlet 211 and a second outlet 212, and gas that has entered the second suction passage 21 from the second inlet 211 may enter the air chamber 11 from the second outlet 212 to be compressed by a piston that is to be provided in the air chamber 11. In this case, since the second outlet 212 penetrates the suction member 20 toward one side surface of the cylinder 10 in the axial direction of the cylinder 10, the gas in the second suction passage 21 is introduced into the cylinder 10 from the axial direction of the cylinder 10.
Further, a piston is rollably disposed within the air chamber 11, the piston closing the first and second outlets 122, 212 when the piston is in the starting position for each cycle of movement. For example, during each cycle of the piston, when the piston is in the starting position, the piston closes the first and second outlets 122, 212, while neither the first nor second suction channels 12, 21 are in communication with the air chamber 11. Here, when the piston is in the starting position, the first outlet 122 is sealed by the outer circumferential surface of the piston, the second outlet 212 is sealed by the end surface of the piston in the axial direction, i.e. both the first outlet 122 and the second outlet 212 can be self-sealed by the piston.
When the piston is rotated from the start position by the drive of the crankshaft, the piston rolls along the inner wall surface of the cylinder 10 gradually away from the start position, at this time, the first outlet 122 and the second outlet 212 are gradually opened, the gas in the first suction passage 12 can be introduced into the cylinder 10 from the radial direction of the cylinder 10 via the first outlet 122, the gas in the second suction passage 21 can be introduced into the cylinder 10 from the axial direction of the cylinder 10 via the second outlet 212, that is, the gas can be introduced into the cylinder 10 from both the first outlet 122 of the first suction passage 12 and the second outlet 212 of the second suction passage 21, whereby the amount of suction per unit time of the cylinder 10 can be increased. Meanwhile, since the second suction passage 21 is introduced into the cylinder 10 in the axial direction of the cylinder 10, the air flow entering the air chamber 11 from the second outlet 212 is prevented from directly striking the piston, thereby effectively reducing the vortex generated when the air flows through the suction port of the cylinder 10, reducing the suction resistance of the compressor, and improving the compressor efficiency.
According to the compression assembly 100 of the embodiment of the invention, by arranging the first suction channel 12 and the second suction channel 21 on the cylinder 10 and the suction member 20 respectively, the first outlet 122 of the first suction channel 12 and the second outlet 212 of the second suction channel 21 are self-sealed by means of the pistons, so that the suction flow area of the compression assembly 100 can be effectively increased and the unit suction amount of the compression assembly 100 can be increased without changing the size of the first outlet 122 on the cylinder 10. And because the gas in the second suction channel 21 enters the air cavity 11 along the axial direction of the air cylinder 10, but not enters the air cavity 11 along the radial direction, the air flow entering the air cavity 11 from the second outlet 212 can be prevented from striking the piston, the vortex generated when the gas flows through the first outlet 122 and the second outlet 212 is effectively reduced, the suction resistance of the compressor is reduced, and the compressor energy efficiency is improved.
In one embodiment of the present invention, as shown in fig. 1 and 6, the second outlet 212 is disposed in a first area A1, and the first area A1 is surrounded by a first arc segment 31, a first straight line segment 32, a second straight line segment 33, and a second arc segment 34. Wherein, in a projection plane perpendicular to the axis of the cylinder 10, the first suction passage 12 has a first projection line and a second projection line extending in the radial direction of the cylinder 10, the inner wall of the cylinder 10 has a third projection line, the first straight line segment 32 coincides with an extension line of the first projection line, the second straight line segment 33 coincides with an extension line of the second projection line, and the first circular arc segment 31 coincides with the third projection line.
Further, as shown in fig. 6, the distance between any point on the second circular arc segment 34 and the central axis of the cylinder 10 is Rs, and Rs satisfies: rs=r+e+a+b.
Wherein R is one half of the diameter of the piston, namely R is the radius of the piston; e is the eccentric amount of the crankshaft driving the piston to rotate. Further, a is a chamfer of the piston, wherein the value range of a is between 0.2mm and 1mm, and the chamfer of the piston can be determined according to the processing technology of the piston, and of course, the chamfer of the piston can also be reasonably set according to the design requirement of the compressor, for example, the chamfer of the piston can be 0.3mm, 0.5mm, 0.6mm or 0.8mm, and the like.
In addition, b is a seal reserve for preventing backflow of gas in the intake chamber 11 in the cylinder 10, and b is 0.5mm to 1.5mm, for example, the seal reserve b may be 0.6mm, 0.8mm, 1mm, 1.2mm, 1.4mm, or the like.
In this embodiment, the second outlet 212 is provided in the first area A1, and the distance between any point on the second arc section 34 surrounding the first area A1 and the central axis of the cylinder 10 satisfies rs=r+e+a+b, so that the area of the second outlet 212 can be further increased while avoiding backflow of the gas in the cylinder 10, and the intake amount per unit time of the cylinder 10 can be increased.
In one embodiment of the present invention, as shown in fig. 1, the second suction passage 21 may satisfy: 1.25 mm-1. Ltoreq.S/V.ltoreq.13.5 mm-1, where S is the area of the second outlet 212 within the air cavity 11 and V is the volume of the air cavity 11. It should be noted that, when the value of S/V is too small, the area S of the second outlet 212 is small, that is, the flow cross section of the second outlet 212 is small, so that the suction flow area of the cylinder 10 cannot be effectively increased, and when the value of S/V is too large, the area of the second outlet 212 is large, and sealing of the second outlet 212 is difficult, which easily results in backflow of the gas in the air chamber 11 from the second outlet 212 into the second suction passage, and affects the compression efficiency of the compressor. Therefore, in the embodiment, the S/V is limited in the range of 1.25mm < -1 > to 13.5mm < -1 >, so that the suction flow cross section area of the air cavity 11 can be effectively increased, the backflow of refrigerant gas in the air cylinder 10 can be avoided, and the compressor efficiency can be improved.
Wherein optionally the ratio between the area of the second outlet 212 within the air chamber 11 and the volume of the chamber may be 2mm-1, 3mm-1, 5mm-1, 7mm-1, 9mm-1, 10mm-1, 12mm-1 or 13mm-1 etc.
In one embodiment of the present invention, as shown in fig. 4 and 5, the second suction passage 21 may be regular or irregular in shape. For example, the second suction passage 21 may extend in a straight line in the radial direction of the getter member 20, and the second suction passage 21 may also extend in a curved line in the radial direction of the getter member 20. As another example, the second suction passage 21 extends in the radial direction of the suction member 20, wherein the second suction passage 21 has a first contour line and a second contour line on one side surface of the suction member 20, the first contour line and the second contour line being opposite in the circumferential direction of the suction member 20, and either one of the first contour line and the second contour line may be a straight line segment, a curved line segment, or a combination of the straight line segment and the curved line segment.
In one embodiment of the present invention, as shown in fig. 5, the shape of the second outlet 212 may be a regular shape, for example, the cross-sectional shape of the second outlet 212 may be a circle, an ellipse, an oblong, a rectangle, a polygon, or the like. Thus, the machining can be facilitated, and the machining efficiency of the getter 20 can be improved.
In other embodiments of the present invention, as shown in fig. 1 and 4, the shape of the second outlet 212 may be an irregular shape, that is, the second outlet 212 is configured to be a special shape, so that the shape of the second outlet 212 may be reasonably configured according to the aforementioned first area A1, so as to maximize the flow cross section of the second outlet 212, increase the intake air amount per unit time of the cylinder 10, and improve the compressor efficiency under the condition that the refrigerant gas is not refluxed.
In one embodiment of the present invention, as shown in fig. 1 and 4, the second outlet 212 may include a first hole section 2121 and a second hole section 2122, the first hole section 2121 and the second hole section 2122 being connected sequentially in the radial direction of the cylinder 10, and the second hole section 2122 being connected inside the first hole section 2121 in the radial direction of the cylinder 10, an end of the first hole section 2121 in the piston rotation direction being flush with an end of the second hole section 2122 in the piston rotation direction upstream in the circumferential direction of the cylinder 10, and a length of the second hole section 2122 in the circumferential direction of the cylinder 10 being greater than a length of the first hole section 2121 in the circumferential direction of the cylinder 10. Thereby, the flow cross section of the second outlet 212 can be further increased, and the intake air amount per unit time of the cylinder 10 can be increased.
Referring to fig. 1, an air outlet chamber 11 is defined at the inner side of a cylinder 10, a crankshaft of a compressor passes through the air chamber 11, the crankshaft has an eccentric portion positioned in the air chamber 11, a piston is sleeved on the eccentric portion of the crankshaft to be driven by the crankshaft to rotate, a slide groove 14 is provided on the cylinder 10, the slide groove 14 is communicated with the air chamber 11, a slide is interactively provided in the slide groove 14, and the front end of the slide is contacted with the piston. The slide, the piston and the cylinder 10 divide the space in the air chamber 11 into a suction chamber and a discharge chamber when the piston rotates. Wherein, as shown in fig. 1, when the piston rotates in the air chamber 11, the rotation direction of the piston is counterclockwise in fig. 1.
As shown in fig. 1 and 4, the first suction passage 12 and the second suction passage 21 are each disposed adjacent to the vane groove 14 and located on the left side of the vane groove 14, and the first suction passage 12 and the second suction passage 21 are each extended from the outside to the inside in the radial direction of the cylinder 10, wherein the first suction passage 12 and the second suction passage 21 are opposed in the axial direction of the cylinder 10.
Wherein, for the second suction passage 21, the second suction passage 21 is formed as a second inlet 211 at the outer end of the cylinder 10 in the radial direction, and the second suction passage 21 is formed as a second outlet 212 at the inner end of the cylinder 10 in the radial direction. Further, the second outlet 212 includes a first hole section 2121 and a second hole section 2122 that are sequentially connected in the radial direction and the intake direction of the cylinder 10, wherein both ends of the first hole section 2121 in the circumferential direction of the air intake member 20 are substantially flush with both ends of the first outlet 122 in the circumferential direction of the cylinder 10, the right end edge of the first hole section 2121 is flush with the right end edge of the second hole section 2122 in the radial direction of the cylinder 10, and the left end edge of the second hole section 2122 extends leftward beyond the left end edge of the first hole section 2121 in the circumferential direction of the cylinder 10. Further, for a portion of the second hole section 2122 that exceeds the first hole section 2121 to the left, an outer side wall of the portion of the second hole section 2122 in the radial direction of the cylinder 10 is spaced apart from an inner wall surface of the cylinder 10, and a distance between the outer side wall of the portion of the second hole section 2122 and the inner wall surface of the cylinder 10 in the rotational direction of the piston is gradually increased. Thus, the flow cross section of the second outlet 212 can be further increased to increase the intake air amount per unit time of the cylinder 10 under the condition that the backflow of the refrigerant gas is not ensured.
In one embodiment of the present invention, as shown in fig. 1, 2 and 4, the first suction passage 12 has a first inlet 121, the first inlet 121 penetrates the outer circumferential wall of the cylinder 10, and the first inlet 121 may be connected to an intake pipe of the compressor. The second suction passage 21 has a second inlet 211, the cylinder 10 is further formed with a connection passage 13, the connection passage 13 extends along the axis of the cylinder 10, and the connection passage 13 is connected between the first suction passage 12 and the second inlet 211. When the compressor works, the refrigerant in the liquid reservoir flows to the first inlet 121 through the air inlet pipe, enters the first suction channel 12 from the first inlet 121, and the refrigerant in the first suction channel 12 is divided into two paths, wherein one path flows to the air cavity 11 of the air cylinder 10 from the first outlet 122, and the other path of refrigerant enters the second inlet 211 of the second suction channel 21 through the connecting channel 13 and then enters the air cavity 11 of the air cylinder 10 through the second outlet 212 of the second suction channel 21. Thus, both the first suction passage 12 and the second suction passage 21 can be taken in through the first inlet 121. Therefore, the suction flow section of the cylinder 10 can be increased only by forming the connecting channel 13 on the cylinder 10 and forming the second suction channel 21 on the suction member 20, thereby avoiding the increase of parts.
In one embodiment of the invention, as shown in fig. 10, the connecting channel 13 may extend parallel to the central axis of the cylinder 10 in the direction from the cylinder 10 towards the getter 20. Thereby, the structure of the connection channel 13 can be simplified, and the processing is convenient.
In a specific embodiment of the present invention, as shown in fig. 9, the connection passage 13 extends obliquely toward the central axis direction of the cylinder 10 in the direction from the cylinder 10 toward the suction member 20. That is, the connecting passage 13 extends obliquely from the outside to the inside in the radial direction of the cylinder 10 in the direction from the first suction passage 12 toward the second suction passage 21. Thereby, it is possible to reduce the convenience of the flow of the air in the first suction passage 12 to the connection passage 13, reduce the flow resistance of the air, and improve the air intake efficiency of the second suction passage 21.
For example, the connection passage 13 may extend in a straight line, and an angle between a central axis of the connection passage 13 and a central axis of the first suction passage 12 in a direction in which the airflow flows is 90 degrees or less. Specifically, the included angle between the central axis of the connection passage 13 and the central axis of the first suction passage 12 may be 70 degrees, 60 degrees, 50 degrees, 40 degrees, 30 degrees, or the like.
In one embodiment of the present invention, as shown in fig. 7, the connection channel 13 may be regular or irregular in shape. For example, the connection channel 13 may extend in a straight line in a direction from the first suction channel 12 to the second suction channel 21, and the connection channel 13 may also extend in a curved line. For another example, the cross section of the connecting channel 13 may be a cross section of a regular shape such as a circle, an ellipse, a rectangle, etc., the cross section of the connecting channel 13 may be a polygon, and any side of the polygon may be a straight line segment or a curved line segment.
In one embodiment of the present invention, as shown in fig. 7, in a projection plane perpendicular to the axis of the cylinder 10, the connecting channel 13 is disposed in the second area A2, and the second area A2 is surrounded by a third straight line segment 41, a fourth straight line segment 42, a third arc segment 43 and a fourth arc segment 44. Wherein, in a projection plane perpendicular to the axis of the cylinder 10, the first projection line and the second projection line of the first suction channel 12 extending along the radial direction of the cylinder 10 are a third straight line segment 41 and a fourth straight line segment 42, respectively, the inner wall of the cylinder 10 has a third projection line, the outer wall of the cylinder 10 has a fourth projection line, the third arc segment 43 coincides with the third projection line, and the fourth arc segment 44 coincides with the fourth projection line. Therefore, the structure of the connecting channel 13 can be simplified, the processing is convenient, the length of the connecting channel 13 can be reduced, the path from the air flow to the second suction channel 21 through the connecting channel 13 is reduced, the air flow resistance is reduced, the suction efficiency of the compression assembly 100 is improved, and the compressor efficiency is improved.
In one embodiment of the present invention, as shown in fig. 1 and 4, the second suction passage 21 is formed by recessing a side surface of the suction member 20 facing the cylinder 10. Thereby, the structure of the second suction passage 21 can be simplified, the processing is facilitated, and the processing efficiency is improved.
For example, as shown in fig. 4, a concave suction groove is formed in a surface of the suction member 20 on a side facing the cylinder 10, the suction groove extends in a straight line in a radial direction of the cylinder 10, one end of the suction groove is aligned with and communicates with an outlet of the connection passage 13, and the other end of the suction groove extends to a radially inner side of an inner wall of the cylinder 10. When the suction member 20 is provided at one axial end of the cylinder 10, the surface of the cylinder 10 cooperates with the suction member 20 to define a second suction passage 21. Thus, the structure of the getter 20 can be simplified, and the processing is facilitated.
In one embodiment of the present invention, the cylinder 10 may be one, and both ends of the cylinder 10 in the axial direction are provided with an upper bearing and a lower bearing, respectively, at least one of which is formed as the suction member 20. For example, the axis of the cylinder 10 is arranged in the up-down direction, an upper bearing is arranged on the upper side of the cylinder 10, a lower bearing is arranged on the inclined side of the cylinder 10, the upper bearing and the lower bearing are all sleeved on the crankshaft, and the cylinder 10, the upper bearing and the lower bearing are matched to define the air cavity 11, wherein the second suction channel 21 can be formed only on the upper bearing, the second suction channel 21 can be formed only on the lower bearing, the second suction channel 21 can be formed on both the upper bearing and the lower bearing, and the second outlet 212 of the second suction channel 21 penetrates through one side surface of the upper bearing and/or the lower bearing facing the cylinder 10 and is communicated with the air cavity 11. Therefore, only the second suction channel 21 is formed on the original parts of the compression assembly 100, the suction flow area can be increased, the suction amount per unit time is increased, the compressor energy efficiency is improved, and the parts are not required to be increased.
In one embodiment of the present invention, the plurality of cylinders 10 may be provided, the compression assembly 100 further includes a partition plate provided between two adjacent cylinders 10, and both sides of the plurality of cylinders 10 in the axial direction are provided with an upper bearing and a lower bearing, respectively, wherein at least one of the upper bearing, the lower bearing, and the partition plate is formed as the suction member 20. That is, only the upper bearing may be formed as the getter 20, the second suction passage 21 may be provided on the upper bearing, only the lower bearing may be formed as the getter 20, the second suction passage 21 may be provided on the lower bearing, only the partition may be formed as the getter 20, the second suction passage 21 may be provided on the partition, the second suction passage 21 may be provided on two of the upper bearing, the lower bearing and the partition, the part in which the second suction passage 21 is formed may be the getter 20, and the second suction passage 21 may be provided on all of the upper bearing, the lower bearing and the partition. Therefore, only the second suction channel 21 is formed on the original parts of the compression assembly 100, the suction flow area can be increased, the suction amount per unit time is increased, the compressor energy efficiency is improved, and the parts are not required to be increased.
A compressor according to an embodiment of the second aspect of the present invention includes a compression assembly 100 according to an embodiment of the first aspect of the present invention described above.
Other constructions of the compressor according to the embodiment of the present invention, such as the structure and operation of the crank slide, etc., are known to those skilled in the art and will not be described in detail herein.
According to the compressor of the embodiment of the present invention, by providing the compression assembly 100 of the embodiment of the first aspect, the overall performance of the compressor is improved.
A compressor according to an embodiment of the present invention will be described with reference to fig. 1 to 10.
The compressor of this embodiment includes a housing, a motor, a crankshaft, a base, a reservoir, a cylinder 10, a piston, a slide, an upper bearing, and a lower bearing. The base is positioned at the bottom of the shell to support the shell, the liquid reservoir is positioned on the side face of the shell, and the liquid reservoir supplies refrigerant into the shell of the compressor through the air inlet pipe.
The motor, the crankshaft, the cylinder 10, the piston, the sliding vane, the upper bearing and the lower bearing are all installed in the shell, the motor is located at the upper part in the shell, the upper end of the crankshaft is connected with the motor so as to be driven by the motor to rotate around the rotation axis of the motor, the upper bearing, the cylinder 10 and the lower bearing are sleeved outside the lower end of the crankshaft, and an eccentric part is arranged on the crankshaft. The upper bearing and the lower bearing are connected and fixed with the cylinder 10, the piston is sleeved on the eccentric part of the crankshaft, and the piston can be driven to roll along the inner peripheral wall of the cylinder 10 in the process of rotating the crankshaft so as to compress the refrigerant. The cylinder 10 is provided with a slide groove 14, a slide is slidably arranged in the slide groove 14, a compression spring is connected between the slide and the slide groove 14, and the compression spring drives the front end of the slide to be in close contact with the periphery of the piston.
The cylinder 10 is formed with a first suction passage 12 penetrating the cylinder 10 radially inside and outside of the cylinder 10, a connecting passage 13 extending in the axial direction of the cylinder 10 is also formed in the cylinder 10, one end of the connecting passage 13 is connected with the first suction passage 12, and one end of the connecting passage 13 is located between a first inlet 121 and a first outlet 122 of the first suction passage 12, and the other end of the connecting passage 13 penetrates a side surface of the cylinder 10 facing the upper bearing and/or the lower bearing.
The axial end surface of the upper bearing and/or the lower bearing is concavely formed with a second suction passage 21, the second suction passage 21 extends along the radial direction of the upper bearing or the lower bearing, a second inlet 211 of the second suction passage 21 is connected with the other end of the connecting passage 13, and a second outlet 212 of the second suction passage 21 extends into the air chamber 11.
During operation of the compressor, the slide, upper bearing, lower bearing, cylinder 10 and piston divide the interior of the air chamber 11 into an intake chamber and an exhaust chamber as the crankshaft rotates. Specifically, the gas flowing out of the liquid storage device enters the first suction channel 12 from the gas inlet pipe through the first inlet 121, then a part of the gas enters the gas cavity 11 through the first outlet 122, another part of the gas enters the second suction channel 21 through the connecting channel 13, then enters the gas cavity 11 through the second outlet 212, and the piston is driven to rotate by the crankshaft to realize the suction, compression and exhaust processes. When the piston is in the starting position of the cycle of the cyclic motion, the piston closes the first outlet 122 and the second outlet 212. As the piston rotates in the anticlockwise direction, the volume of the suction cavity increases, the volume of the exhaust cavity decreases, the pressure increases, and high-pressure gas is discharged.
According to the compressor of the embodiment of the invention, the second suction passage 21 is arranged on one side of the upper bearing or the lower bearing close to the cylinder 10, and the second outlet 212 of the second suction passage 21 is self-sealed by the upper end surface and the lower end surface of the piston, so that the suction flow area can be effectively increased on the premise of not changing the size of the first outlet 122 of the first suction passage 12 on the cylinder 10, and the suction amount per unit time can be further increased. In addition, the refrigerant in the second suction channel 21 can enter the air cavity 11 from bottom to top, and is not injected into the air cylinder 10 in the radial direction any more, so that the refrigerant flow can be prevented from directly striking the piston, the vortex generated when the gas flows through the first outlet 122 and the second outlet 212 is effectively weakened, the suction resistance of the compressor is reduced, and the compressor energy efficiency is improved.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (11)

1. A compression assembly, comprising:
the inner side of the cylinder is provided with a first suction channel extending along the radial direction of the cylinder, the first suction channel is provided with a first outlet, and the first outlet penetrates through the inner wall of the cylinder and is communicated with the air cavity;
the air suction piece is arranged on at least one side of the air cylinder in the axial direction, a second suction channel is formed on the air suction piece, the second suction channel extends along the radial direction of the air cylinder, and is provided with a second outlet which penetrates through the air suction piece, faces to one side surface of the air cavity in the axial direction of the air cylinder and is communicated with the air cavity;
the piston is arranged in the air cavity in a rolling way, and when the piston is positioned at the starting position of each cycle of cyclic movement, the piston seals the first outlet and the second outlet.
2. The compression assembly of claim 1, wherein the second outlet is disposed in a first region defined by a first circular arc segment, a first straight line segment, a second straight line segment, and a second circular arc segment,
in a projection plane perpendicular to the cylinder axis, the first suction passage has a first projection line and a second projection line extending in a radial direction of the cylinder, the inner wall of the cylinder has a third projection line, the first straight line section coincides with an extension line of the first projection line, the second straight line section coincides with an extension line of the second projection line, the first circular arc section coincides with the third projection line,
the distance rs=r+e+a+b between any point on the second arc segment and the central axis of the cylinder,
wherein R is 1/2 of the diameter of the piston, E is the eccentric amount of a crankshaft driving the piston to rotate; a is the chamfer angle of the piston, b is the reserved allowance for sealing, and b is 0.5mm-1.5mm.
3. The compression assembly of claim 1, wherein the second suction passage satisfies: S/V is more than or equal to 1.25mm < -1 > and less than or equal to 13.5mm < -1 >, wherein S is the area of the second outlet in the air cavity, and V is the volume of the air cavity.
4. The compression assembly of claim 1, wherein the second outlet comprises a first bore section and a second bore section, the second bore section being connected inboard of the first bore section in a radial direction of the cylinder, a length of the second bore section in a circumferential direction of the cylinder being greater than a length of the first bore section in the circumferential direction of the cylinder, and an end of the first bore section in the piston rotation direction being flush with an end of the second bore section in the piston rotation direction upstream.
5. The compression assembly of any one of claims 1-4, wherein the first suction passage has a first inlet opening through a peripheral wall of the cylinder, the second suction passage has a second inlet opening, and the cylinder is further formed with a connecting passage extending along an axis of the cylinder and connected between the first suction passage and the second inlet opening.
6. The compression assembly of claim 5, wherein the connecting channel extends parallel to the central axis of the cylinder in a direction from the cylinder toward the suction member, or wherein the connecting channel extends obliquely toward the central axis of the cylinder.
7. The compression assembly of claim 5, wherein the connecting passage is disposed in a second region defined by a third straight line segment, a fourth straight line segment, a third circular arc segment, and a fourth circular arc segment in a projection plane perpendicular to the cylinder axis,
in a projection plane perpendicular to the axis of the cylinder, a first projection line and a second projection line of the first suction channel, which extend along the radial direction of the cylinder, are the third straight line segment and the fourth straight line segment respectively, the inner wall of the cylinder is provided with a third projection line, the outer wall of the cylinder is provided with a fourth projection line, the third arc segment is overlapped with the third projection line, and the fourth arc segment is overlapped with the fourth projection line.
8. The compression assembly of claim 5, wherein the second suction passage is formed by a recess in a side surface of the suction member facing the cylinder.
9. A compression assembly according to any one of claims 1-8, wherein the cylinder is one, and both ends of the cylinder in the axial direction are provided with an upper bearing and a lower bearing, respectively, at least one of which is formed as the getter.
10. The compression assembly according to any one of claims 1-8, wherein the number of cylinders is plural, a partition plate is provided between two adjacent cylinders, the plural cylinders are provided with an upper bearing and a lower bearing on both sides in an axial direction, respectively, and at least one of the upper bearing, the lower bearing, and the partition plate is formed as the suction member.
11. A compressor comprising a compression assembly according to any one of claims 1-10.
CN202210786832.5A 2022-07-04 2022-07-04 Compression assembly and compressor with same Pending CN117386612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210786832.5A CN117386612A (en) 2022-07-04 2022-07-04 Compression assembly and compressor with same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210786832.5A CN117386612A (en) 2022-07-04 2022-07-04 Compression assembly and compressor with same

Publications (1)

Publication Number Publication Date
CN117386612A true CN117386612A (en) 2024-01-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210786832.5A Pending CN117386612A (en) 2022-07-04 2022-07-04 Compression assembly and compressor with same

Country Status (1)

Country Link
CN (1) CN117386612A (en)

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