CN113123969A - Pump body and compressor with same - Google Patents

Pump body and compressor with same Download PDF

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Publication number
CN113123969A
CN113123969A CN202110546341.9A CN202110546341A CN113123969A CN 113123969 A CN113123969 A CN 113123969A CN 202110546341 A CN202110546341 A CN 202110546341A CN 113123969 A CN113123969 A CN 113123969A
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CN
China
Prior art keywords
air
cavity
pump body
cylinder
roller
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
CN202110546341.9A
Other languages
Chinese (zh)
Inventor
王勇
朱伟
侯平
丁学超
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.)
Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Zhuhai Gree Energy Saving Environmental Protection Refrigeration Technology Research Center Co Ltd
Original Assignee
Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
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 Gree Green Refrigeration Technology Center Co Ltd of Zhuhai filed Critical Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority to CN202110546341.9A priority Critical patent/CN113123969A/en
Publication of CN113123969A publication Critical patent/CN113123969A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—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
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • F04C2240/10—Stators

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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 provides a pump body and a compressor with the same, wherein the pump body comprises a first cylinder, a second cylinder and a partition plate, the first cylinder is provided with an upper cavity, and the second cylinder is provided with a lower cavity; the baffle gas storage cavity is communicated with the upper cavity and the lower cavity respectively; the pump body also comprises a crankshaft, an upper eccentric circle of the crankshaft is arranged corresponding to the upper roller and the upper sliding sheet, and a lower eccentric circle of the crankshaft is arranged corresponding to the lower roller and the lower sliding sheet; when the pump body is applied to a compressor, a refrigerant in the liquid separator enters the partition plate gas storage cavity and then respectively enters the upper cavity and the lower cavity, the pump body exhausts and inhales gas at any moment, the exhaust capacity is improved, the upper eccentric circle and the lower eccentric circle of the crankshaft are coaxially arranged, the assembly with the upper roller and the lower roller is convenient, the strength of the crankshaft is ensured, and the reliability is high; the compressor is beneficial to miniaturization and flattening design, and the volumetric efficiency and the energy efficiency are improved; the first cylinder and the second cylinder do not exhaust simultaneously, so that pressure pulsation and shafting movement of the compressor caused by exhaust are reduced, and the noise of the compressor is reduced.

Description

Pump body and compressor with same
Technical Field
The invention relates to the technical field of compressors, in particular to a pump body and a compressor with the same.
Background
The double-cylinder compressor outputs a refrigerant with large discharge capacity by arranging upper and lower eccentric circles of a crankshaft in a 180-degree phase difference distribution mode, and is widely applied to various occasions; when the size of the large-displacement compressor is reduced or the small-sized compressor realizes large displacement, the eccentric amount of the crankshaft is inevitably increased. Because the eccentric circles and the rollers are matched, the rollers cannot be sleeved into the crankshaft due to large-size eccentricity, the crankshaft diameter of the crankshaft is reduced or the distance between the two eccentric circles is increased in the prior art, and the rollers are sleeved into the crankshaft, so that the strength of the crankshaft is insufficient, the reliability is reduced, the size of the partition plate is increased, and the cost is increased.
Disclosure of Invention
In view of this, the invention provides a pump body and a compressor with the pump body, so as to solve the problems that the compressor in the prior art is small in displacement, insufficient in crankshaft strength, large in required partition plate size and the like.
The present invention provides a pump body, including:
the first cylinder is provided with an upper cavity and a first air suction hole communicated with the upper cavity;
the second cylinder is provided with a lower cavity and a second air suction hole communicated with the lower cavity;
the partition plate is arranged between the first air cylinder and the second air cylinder and forms an air storage cavity, and the air storage cavity is provided with an air inlet, a first air outlet and a second air outlet which are communicated with the air storage cavity; the first air outlet is communicated with the first air suction hole; the second air outlet hole is communicated with the second air inlet hole;
the outside air enters the air storage cavity through the air inlet, and the air in the air storage cavity enters the upper cavity through the first air outlet and the first air suction hole and enters the lower cavity through the second air outlet and the second air suction hole;
the first air suction hole and the second air suction hole are arranged on two sides of the axis of the pump body in a 180-degree phase difference mode; the first air outlet hole and the second air outlet hole are arranged on two sides of the axis of the pump body in a 180-degree phase difference mode.
The pump body further comprises a crankshaft, the crankshaft comprises an upper eccentric circle and a lower eccentric circle which are arranged on the same side of the crankshaft, and the deflection axis of the upper eccentric circle is superposed with the deflection axis of the lower eccentric circle.
Further optionally, the partition plate comprises an upper partition plate and a lower partition plate, the upper partition plate is provided with the first air outlet hole, and an upper end surface of the upper partition plate is abutted against a lower end surface of the first air cylinder; and a second air outlet hole is formed in the lower partition plate, and the lower end face of the lower partition plate is attached to the upper end face of the second cylinder.
Further optionally, the upper partition plate is formed with an upper air storage tank with an opening facing the lower partition plate, and the upper air storage tank is communicated with the first air outlet; the lower baffle plate is provided with a lower air storage groove with an opening facing the upper baffle plate, and the lower air storage groove is communicated with the second air outlet; the upper air storage groove and the lower air storage groove form the air storage cavity.
Further optionally, the pump body further comprises an upper roller and a lower roller, the upper roller is sleeved on the upper eccentric circle, and the lower roller is sleeved on the lower eccentric circle; the upper roller is located in the upper cavity, and the lower roller is located in the lower cavity.
Further optionally, the first cylinder is formed with an upper chute, the second cylinder is formed with a lower chute, and the upper chute and the lower chute are arranged at two sides of the axis of the pump body in a 180-degree phase difference.
Further optionally, the pump body further comprises an upper slide cooperating with the upper roller and a lower slide cooperating with the lower roller; the upper sliding sheet slides along the upper sliding groove under the action of a spring and/or the upper roller, and the lower sliding sheet slides along the lower sliding groove under the action of a spring and/or the lower roller;
when the crankshaft rotates, the sliding direction of the upper sliding sheet along the upper sliding groove is opposite to the sliding direction of the lower sliding sheet along the lower sliding groove.
Further optionally, the upper cavity has an upper vent hole, the lower cavity has a lower vent hole, and the upper vent hole and the lower vent hole are arranged at two sides of the axis of the pump body in a 180-degree phase difference.
The invention also provides a compressor, which is provided with a liquid distributor and the pump body; the liquid separator is connected with the air inlet of the clapboard through an air inlet pipe; the refrigerant in the liquid separator enters the gas storage cavity of the partition plate through the gas inlet pipe and the gas inlet, and then enters the upper cavity and the lower cavity through the first gas outlet hole and the second gas outlet hole respectively.
The pump body provided by the invention comprises a first cylinder, a second cylinder and a partition plate, wherein the partition plate is arranged between the first cylinder and the second cylinder, and a partition plate gas storage cavity is communicated with an upper cavity of the first cylinder and a lower cavity of the second cylinder; the deflection axes of the upper eccentric circle and the lower eccentric circle of the crankshaft are superposed; the upper eccentric circle, the upper roller and the upper sliding sheet are correspondingly arranged, and the lower eccentric circle, the lower roller and the lower sliding sheet are correspondingly arranged; when the pump body is applied to a compressor, the compressor runs, refrigerant in the liquid separator enters the gas storage cavity of the partition plate and then respectively enters the upper cavity and the lower cavity through respective gas suction holes, the sliding directions of the upper sliding sheet and the lower sliding sheet are different, the pump body exhausts and sucks gas at any time, the exhaust capacity is improved, the upper eccentric circle and the lower eccentric circle of the crankshaft are coaxially arranged, the assembly between the roller and the crankshaft is convenient, the strength of the crankshaft is ensured, and the reliability is high; the compressor is beneficial to the miniaturization design, the cost is reduced, the same-displacement compressor flattening design is realized, the volume efficiency is improved, and the compressor energy efficiency is improved; meanwhile, the first cylinder and the second cylinder do not exhaust simultaneously, so that pressure pulsation and shafting movement of the compressor caused by exhaust are reduced, and the noise of the compressor is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic structural view of an embodiment of the present invention in which a first cylinder, a second cylinder and a partition plate are assembled together;
FIG. 2a is a schematic structural diagram of a first cylinder according to an embodiment of the present invention;
FIG. 2b is a schematic structural view of a second cylinder according to an embodiment of the present invention;
FIGS. 3a and 3b are schematic structural views of an embodiment of the separator according to the present invention;
FIG. 4 is a schematic structural view of an embodiment of a crankshaft provided in the present invention;
FIG. 5 is a schematic structural diagram of an embodiment of a compressor according to the present invention;
in the figure:
1-a first cylinder; 11-an upper cavity; 12-a first air-intake hole; 13-upper chute;
2-a second cylinder; 21-lower cavity; 22-a second suction hole; 23-lower chute;
3-a separator; 31-an upper baffle plate; 311-upper gas storage tank; 312-a first outlet aperture; 32-a lower baffle plate; 321-lower gas storage tank; 322-a second outlet hole; 33-gas storage cavity; 34-an air inlet;
4-a crankshaft; 41-upper eccentric circle; 42-lower eccentric circle;
5-a roller; 51-upper roller; 52-lower roller;
61-upper sliding sheet; 62-lower sliding sheet;
7-a compressor; 71-a liquid separator; 711-intake pipes; 72-an upper flange; 73-lower flange.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
In order to increase the displacement of the existing compressor, the eccentricity of a crankshaft cannot be increased, but a roller cannot be sleeved in the crankshaft, and the strength of the crankshaft is insufficient and the reliability is reduced by reducing the shaft diameter of the crankshaft or increasing the distance between two eccentric circles; the invention provides a pump body which comprises a first cylinder, a second cylinder and a partition plate, wherein outside air enters an air storage cavity through an inlet of the partition plate and then respectively enters the first cylinder and the second cylinder through corresponding air suction holes, so that air is supplied to an upper cavity and a lower cavity by one air storage cavity at the same time, the pump body is used for sucking air and exhausting air at any moment, the air exhaust amount is improved, the axes of an upper eccentric circle and a lower eccentric circle of a crankshaft are arranged in a superposition mode, the strength of the crankshaft is guaranteed, meanwhile, a roller and the eccentric circle are convenient to assemble, the volume efficiency is improved, the first cylinder and the second cylinder do not exhaust air at the same time, and the noise of a compressor is reduced.
Example 1
< Pump body >
As shown in fig. 1, 2a and 2b, the present embodiment provides a pump body including a first cylinder 1, a second cylinder 2 and a partition plate 3; the first cylinder 1 is provided with an upper cavity 11 and a first air suction hole 12 communicated with the upper cavity 11; specifically, the first air suction holes 12 are located on the lower end surface of the first cylinder 1; the second cylinder 2 is provided with a lower cavity 21 and a second air suction hole 22 communicated with the lower cavity 21; specifically, the second suction hole 22 is located on the upper end face of the second cylinder 2; the partition plate 3 is arranged between the first cylinder 1 and the second cylinder 2, a gas storage cavity 33 is formed, and the gas storage cavity 33 is provided with a gas inlet 34, a first gas outlet 312 and a second gas outlet 322 which are communicated with the gas storage cavity 33; the first air outlet 312 and the second air outlet 322 are oppositely arranged at two sides of the air storage cavity 33 and are separated from each other; correspondingly, the axes of the first air suction holes 12 and the second air suction holes 22 are respectively positioned at two sides of the pump body; the first air outlet 312 corresponds to and is communicated with the first air suction hole 12; the second air outlet hole 322 corresponds to and is communicated with the second air suction hole 22; the gas in the gas storage cavity 33 upwards enters the upper cavity 11 through the first gas outlet 312 and the first gas suction hole 12, and downwards enters the lower cavity 21 through the second gas outlet 322 and the second gas suction hole 22, so that the gas is respectively supplied to the two cylinders by one gas storage cavity 33;
the outside air enters the air storage cavity 33 through the air inlet 34, the air in the air storage cavity 33 enters the upper cavity 11 through the first air outlet 312 and the first air suction hole 12, and enters the lower cavity 21 through the second air outlet 322 and the second air suction hole 22, so that the first air cylinder 1 and the second air cylinder 2 do not inhale air and exhaust air at the same time, and the air displacement of the pump body is improved while the continuity of the air displacement of the pump body is maintained.
Preferably, the first suction holes 12 and the second suction holes 22 are arranged 180 ° out of phase on either side of the axis of the pump body; the first air outlet 312 and the second air outlet 322 are arranged at two sides of the axis of the pump body in a 180-degree phase difference manner; the first air suction hole 12 corresponds to the first air outlet 312 in position, the second air suction hole 22 corresponds to the second air outlet 322 in position, only one of the first air cylinder 1 and the second air cylinder 2 sucks air, and the other one exhausts air at any time, so that the continuity of air suction and air exhaust of the pump body is ensured.
As shown in fig. 4, the pump body further includes a crankshaft 4, the crankshaft 4 including an upper eccentric circle 41 and a lower eccentric circle 42 provided on the same side of the crankshaft 4; in order to facilitate the assembly of the roller and the crankshaft 4 without increasing the size of the crankshaft, the deflection axis of the upper eccentric circle 41 and the deflection axis of the lower eccentric circle 42 are coincident so that the roller can be assembled on the upper and lower eccentric circles in one direction. The crankshaft 4 is rotatably inserted into the inner holes of the upper cavity 11, the lower cavity 21 and the partition plate 3.
As shown in fig. 3a and 3b, in another embodiment, the partition plate 3 includes an upper partition plate 31 and a lower partition plate 32, the upper partition plate 31 being formed with a first outlet hole 312, specifically, an upper end surface of the upper partition plate 31; the upper end surface of the upper baffle plate 31 is attached to the lower end surface of the first cylinder 1, and the axial direction of the first air outlet 312 faces the first cylinder 1 and is correspondingly communicated with the first air suction holes 12; the lower baffle plate 32 is provided with a second air outlet 322, specifically, the lower end surface of the lower baffle plate 32; the lower end surface of the lower baffle plate 32 is attached to the upper end surface of the second cylinder 2, and the second air outlet hole 322 axially faces the second cylinder 2 and is correspondingly communicated with the second air suction hole 22;
the upper partition plate 31 is provided with an upper air storage tank 311 with an opening facing the lower partition plate 32, and the upper air storage tank 311 is communicated with the first air outlet 312; the lower partition plate 32 is formed with a lower air storage tank 321 with an opening facing the upper partition plate 31, and the lower air storage tank 321 is communicated with the second air outlet 322; the upper air storage tank 311 and the lower air storage tank 321 form an air storage cavity 33; the first air outlet 312 and the second air outlet 322 are oppositely arranged at two sides of the air storage cavity 33, and correspondingly, the axis of the first air suction hole 12 and the axis of the second air suction hole 22 are respectively located at two sides of the pump body, so that the first cylinder 1 and the second cylinder 2 do not suck air or exhaust air at the same time, and the air displacement of the pump body is improved while the continuity of the air displacement of the pump body is maintained.
In this embodiment, the upper cavity 11 has an upper exhaust hole, the lower cavity 21 has a lower exhaust hole, and the upper exhaust hole and the lower exhaust hole are arranged at 180 ° phase difference on two sides of the axis of the pump body, so that the first cylinder 1 and the second cylinder 2 are not exhausted at the same time.
Further, the pump body further comprises an upper roller 51 and a lower roller 52, wherein the upper roller 51 is sleeved on the upper eccentric circle 41, and the lower roller 52 is sleeved on the lower eccentric circle 42; the upper roller 51 is positioned in the upper cavity 11, and the lower roller 52 is positioned in the lower cavity 21; the rollers rotate along with the crankshaft 4 to realize air suction and exhaust of the upper cavity 11 and the lower cavity 21.
As shown in fig. 1, 2a and 2b, the first cylinder 1 is formed with an upper chute 13 and the second cylinder 2 is formed with a lower chute 23, the upper chute 13 and the lower chute 23 being preferably arranged 180 ° out of phase on either side of the axis of the pump body. The pump body also comprises an upper slide 61 cooperating with the upper roller 51 and a lower slide 62 cooperating with the lower roller 52; one end of the upper sliding sheet 61 is contacted with the upper roller 51, the other end is connected with the spring and is arranged in the upper sliding chute 13, and the upper sliding sheet 61 slides along the upper sliding chute 13 under the action of the spring and/or the upper roller 51; the upper slide sheet 61 divides the upper cavity 11 into an upper air suction cavity and an upper air discharge cavity, the upper air suction cavity is communicated with the first air suction holes, the upper air discharge cavity is communicated with the upper air discharge holes, the upper slide sheet 61 slides in the upper chute 13 along with the rotation of the upper roller 51, air enters the upper air discharge cavity from the air storage cavity 33 through the first air outlet 312 and the first air suction holes 12, and air in the lower air discharge cavity is discharged through the upper air discharge holes;
one end of the lower slide sheet 62 is in contact with the lower roller 52, the other end is connected with the spring and is arranged in the lower chute 23, and the lower slide sheet 62 slides along the lower chute 23 under the action of the spring and/or the lower roller 52; the lower slide sheet 62 divides the lower cavity 21 into a lower air suction cavity and a lower air suction cavity, the lower air suction cavity is communicated with the second air suction hole 22, the lower air suction cavity is communicated with the lower air discharge hole, the lower slide sheet 62 slides in the lower chute 23 along with the rotation of the lower roller 52, air enters the lower air suction cavity from the air storage cavity 33 through the second air outlet 322 and the second air suction hole 22, and the air in the lower air discharge cavity is discharged through the lower air discharge hole.
Because the deflection axis of the upper eccentric circle 41 is coincident with the deflection axis of the lower eccentric circle 42, the corresponding deflection axis of the upper roller 51 is coincident with the corresponding deflection axis of the lower roller 52, and meanwhile, the upper chute 13 and the lower chute 23 are arranged at two sides of the axis of the pump body in a 180-degree phase difference manner; when the crankshaft 4 rotates, the sliding direction of the upper slider 61 along the upper chute 13 is opposite to the sliding direction of the lower slider 62 along the lower chute 23.
Specifically, when the crankshaft 4 rotates, the upper roller 51 drives the upper sliding piece 61 to slide in the upper sliding chute 13, and the lower roller 52 drives the lower sliding piece 62 to slide in the lower sliding chute 23; at any moment, when the upper sliding sheet 61 moves towards the radial outward direction of the first cylinder 1, the lower sliding sheet 62 moves towards the radial inward direction of the second cylinder 2, at the moment, the upper air exhaust cavity of the first cylinder 1 exhausts, and air in the air storage cavity 33 enters the lower air exhaust cavity of the second cylinder 2 through the second air outlet 322 and the second air suction hole 22;
at any moment, when the upper sliding sheet 61 moves towards the radial inward direction of the first cylinder 1, the lower sliding sheet 62 moves towards the radial outward direction of the second cylinder 2, at the moment, the upper air exhaust cavity of the first cylinder 1 sucks air, the air in the air storage cavity 33 enters the upper air intake cavity of the first cylinder 1 through the first air outlet 312 and the first air intake hole 12, and the lower air exhaust cavity of the second cylinder 2 exhausts air.
< compressor >
As shown in fig. 5, the present embodiment provides a compressor 7 having a liquid distributor 71 and a pump body according to any one of the above; the liquid separator 71 is provided on the left side of the compressor 7 and is connected to the air inlet 34 of the partition plate 3 through an air inlet pipe 711; the pump body is arranged between an upper flange 72 and a lower flange 73 of the compressor 7; the refrigerant in the liquid separator 71 enters the air storage cavity 33 of the separator 3 through the air inlet pipe 711 and the air inlet 34, and then enters the upper cavity 11 and the lower cavity 21 through the first air outlet hole 312 and the second air outlet hole 322.
When the crankshaft 4 rotates, the sliding direction of the upper slider 61 along the upper chute 13 is opposite to the sliding direction of the lower slider 62 along the lower chute 23;
specifically, when the crankshaft 4 rotates, the upper roller 51 drives the upper sliding piece 61 to slide in the upper sliding chute 13, and the lower roller 52 drives the lower sliding piece 62 to slide in the lower sliding chute 23; at any moment, when the upper sliding sheet 61 moves towards the radial outward direction of the first cylinder 1, the lower sliding sheet 62 moves towards the radial inward direction of the second cylinder 2, at the moment, the refrigerant in the air exhaust cavity in the first cylinder 1 is exhausted, the refrigerant in the liquid separator 71 enters the air storage cavity 33 of the partition plate 3 through the air inlet pipe 711 and the air inlet 34 and then enters the lower air exhaust cavity of the second cylinder 2 through the second air outlet 322 and the second air suction hole 22;
at any moment, when the upper sliding sheet 61 moves towards the radial inward direction of the first cylinder 1, the lower sliding sheet 62 moves towards the radial outward direction of the second cylinder 2, at this moment, the refrigerant in the liquid separator 71 enters the air storage cavity 33 of the partition plate 3 through the air inlet pipe 711 and the air inlet 34, then enters the upper air suction cavity of the first cylinder 1 through the first air outlet 312 and the first air suction hole 12, and the refrigerant in the lower air discharge cavity of the second cylinder 2 is discharged.
The pump body exhausts and inhales air at any moment, so that the exhaust volume is improved, the upper eccentric circle and the lower eccentric circle of the crankshaft 4 are coaxially arranged, the assembly between the roller and the crankshaft 4 is convenient, the strength of the crankshaft is ensured, and the reliability is high; the compressor is beneficial to the miniaturization design, the cost is reduced, the same-displacement compressor flattening design is realized, the volume efficiency is improved, and the compressor energy efficiency is improved; meanwhile, the first cylinder and the second cylinder do not exhaust simultaneously, so that pressure pulsation and shafting movement of the compressor caused by exhaust are reduced, and the noise of the compressor is reduced.
Example 2
The embodiment provides a pump body, which comprises a first cylinder 1 and a second cylinder 2; the first cylinder 1 is provided with an upper cavity 11 and a first air suction hole 12 communicated with the upper cavity 11; specifically, the first air-suction holes 12 are located on the side of the first cylinder 1; the second cylinder 2 is provided with a lower cavity 21 and a second air suction hole 22 communicated with the lower cavity 21; specifically, the second suction hole 22 is located on the side of the second cylinder 2; the external air enters the upper cavity 11 through the first air suction holes 12 and enters the lower cavity 21 through the second air suction holes 22 without affecting each other.
The upper cavity 11 is provided with an upper exhaust hole, the lower cavity 21 is provided with a lower exhaust hole, and the upper exhaust hole and the lower exhaust hole are arranged at 180-degree phase difference on two sides of the axis of the pump body, so that the first cylinder 1 and the second cylinder 2 do not inhale or exhaust at the same time, the exhaust volume of the pump body is kept continuous, and the exhaust volume of the pump body is increased.
The pump body further comprises a crankshaft 4, an upper roller 51 and a lower roller 52, wherein the crankshaft 4 comprises an upper eccentric circle 41 and a lower eccentric circle 42 which are arranged on the same side of the crankshaft 4; the upper roller 51 is sleeved on the upper eccentric circle 41, and the lower roller 52 is sleeved on the lower eccentric circle 42; in order to facilitate the assembly of the roller and the crankshaft 4 on the premise of not increasing the size of the crankshaft, the deflection axis of the upper eccentric circle 41 is superposed with the deflection axis of the lower eccentric circle 42, so that the roller can be assembled on the upper eccentric circle and the lower eccentric circle in one direction; the structures of the upper slider 61 and the lower slider 62 of the pump body, and the upper chute 13 and the lower chute 23 of the first cylinder 1 are the same as those of embodiment 1.
The compressor is provided with a first liquid separator and a second liquid separator, and the first liquid separator is connected with the first air suction holes 12 of the first air cylinder 1 through a first air inlet pipe; and the second liquid separator is connected with the second air suction hole 22 of the second cylinder 2 through a second air inlet pipe.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (8)

1. A pump body, comprising:
the first cylinder is provided with an upper cavity and a first air suction hole communicated with the upper cavity;
the second cylinder is provided with a lower cavity and a second air suction hole communicated with the lower cavity;
the partition plate is arranged between the first air cylinder and the second air cylinder and forms an air storage cavity, and the air storage cavity is provided with an air inlet, a first air outlet and a second air outlet which are communicated with the air storage cavity; the first air outlet and the second air outlet are oppositely arranged on two sides of the air storage cavity, and the first air suction hole and the second air suction hole are correspondingly and respectively positioned on two sides of the axis of the pump body; the first air outlet is communicated with the first air suction hole; the second air outlet hole is communicated with the second air inlet hole;
the outside air enters the air storage cavity through the air inlet, and the air in the air storage cavity enters the upper cavity through the first air outlet and the first air suction hole and enters the lower cavity through the second air outlet and the second air suction hole;
the first air suction hole and the second air suction hole are arranged on two sides of the axis of the pump body in a 180-degree phase difference mode; the first air outlet and the second air outlet are arranged on two sides of the axis of the pump body in a 180-degree phase difference manner;
the pump body further comprises a crankshaft, the crankshaft comprises an upper eccentric circle and a lower eccentric circle which are arranged on the same side of the crankshaft, and the deflection axis of the upper eccentric circle is superposed with the deflection axis of the lower eccentric circle.
2. The pump body according to claim 1, wherein the partition plate includes an upper partition plate and a lower partition plate, the upper partition plate is formed with the first air outlet hole, and an upper end surface of the upper partition plate abuts against a lower end surface of the first cylinder; and a second air outlet hole is formed in the lower partition plate, and the lower end face of the lower partition plate is attached to the upper end face of the second cylinder.
3. The pump body according to claim 2, wherein the upper separator plate is formed with an upper air reservoir opening toward the lower separator plate, the upper air reservoir communicating with the first air outlet hole; the lower baffle plate is provided with a lower air storage groove with an opening facing the upper baffle plate, and the lower air storage groove is communicated with the second air outlet; the upper air storage groove and the lower air storage groove form the air storage cavity.
4. The pump body of claim 1, further comprising an upper roller and a lower roller, the upper roller being nested on the upper eccentric circle and the lower roller being nested on the lower eccentric circle; the upper roller is located in the upper cavity, and the lower roller is located in the lower cavity.
5. The pump body according to claim 4, characterized in that said first cylinder is formed with an upper chute and said second cylinder is formed with a lower chute, said upper and lower chutes being arranged 180 ° out of phase on either side of the axis of the pump body.
6. The pump body of claim 5, further comprising an upper slide cooperating with the upper roller and a lower slide cooperating with the lower roller; the upper sliding sheet slides along the upper sliding groove under the action of a spring and/or the upper roller, and the lower sliding sheet slides along the lower sliding groove under the action of a spring and/or the lower roller;
when the crankshaft rotates, the sliding direction of the upper sliding sheet along the upper sliding groove is opposite to the sliding direction of the lower sliding sheet along the lower sliding groove.
7. The pump body of claim 1, wherein the upper cavity has an upper vent and the lower cavity has a lower vent, the upper and lower vents being 180 ° out of phase on either side of the axis of the pump body.
8. A compressor having a liquid separator and a pump body according to any one of claims 1 to 7; the liquid separator is connected with the air inlet of the clapboard through an air inlet pipe; when the crankshaft of the pump body rotates, the refrigerant in the liquid separator enters the gas storage cavity of the partition plate through the gas inlet pipe and the gas inlet, then enters the upper cavity and the lower cavity through the first gas outlet hole and the second gas outlet hole respectively, and is discharged through the upper gas outlet and the lower gas outlet of the pump body.
CN202110546341.9A 2021-05-19 2021-05-19 Pump body and compressor with same Pending CN113123969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110546341.9A CN113123969A (en) 2021-05-19 2021-05-19 Pump body and compressor with same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110546341.9A CN113123969A (en) 2021-05-19 2021-05-19 Pump body and compressor with same

Publications (1)

Publication Number Publication Date
CN113123969A true CN113123969A (en) 2021-07-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110546341.9A Pending CN113123969A (en) 2021-05-19 2021-05-19 Pump body and compressor with same

Country Status (1)

Country Link
CN (1) CN113123969A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103850938A (en) * 2013-12-20 2014-06-11 珠海凌达压缩机有限公司 Air suction and exhaust structure of double-stage compressor
CN203742986U (en) * 2013-12-20 2014-07-30 珠海凌达压缩机有限公司 Suction-exhaust structure of double-stage compressor
CN105201832A (en) * 2015-11-06 2015-12-30 广东美芝制冷设备有限公司 Compressor
US20180156215A1 (en) * 2015-08-24 2018-06-07 Guangdong Meizhi Compressor Co., Ltd. Rotary compressor and refrigeration cycle device having same
CN215595888U (en) * 2021-05-19 2022-01-21 珠海格力节能环保制冷技术研究中心有限公司 Pump body and compressor with same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103850938A (en) * 2013-12-20 2014-06-11 珠海凌达压缩机有限公司 Air suction and exhaust structure of double-stage compressor
CN203742986U (en) * 2013-12-20 2014-07-30 珠海凌达压缩机有限公司 Suction-exhaust structure of double-stage compressor
US20180156215A1 (en) * 2015-08-24 2018-06-07 Guangdong Meizhi Compressor Co., Ltd. Rotary compressor and refrigeration cycle device having same
CN105201832A (en) * 2015-11-06 2015-12-30 广东美芝制冷设备有限公司 Compressor
CN215595888U (en) * 2021-05-19 2022-01-21 珠海格力节能环保制冷技术研究中心有限公司 Pump body and compressor with same

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