CN108302013B - A valve train of breathing in for reciprocating compressor - Google Patents
A valve train of breathing in for reciprocating compressor Download PDFInfo
- Publication number
- CN108302013B CN108302013B CN201711310311.8A CN201711310311A CN108302013B CN 108302013 B CN108302013 B CN 108302013B CN 201711310311 A CN201711310311 A CN 201711310311A CN 108302013 B CN108302013 B CN 108302013B
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- CN
- China
- Prior art keywords
- valve plate
- suction valve
- air suction
- suction
- valve
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/102—Adaptations or arrangements of distribution members the members being disc valves
- F04B39/1026—Adaptations or arrangements of distribution members the members being disc valves without spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/128—Crankcases
Abstract
The invention discloses an air suction valve group for a reciprocating compressor, which comprises a crankcase, a valve plate gasket, an air suction valve plate and a valve plate, wherein the valve plate gasket, the air suction valve plate and the valve plate are sequentially stacked and connected on the crankcase, two air suction valves are distributed on the air suction valve plate, the shapes of the two air suction valves are respectively symmetrical along the central line of the two air suction valves, two air suction ports are arranged on the valve plate, and the two air suction valves arranged on the air suction valve plate respectively cover the two air suction ports of the valve plate. The crankcase is provided with grooves at positions corresponding to two outer side root regions of the intake valve on the cylinder face region, respectively. When the suction valve in the valve group is opened, the stress on two sides of the root of the suction valve is uniformly stressed, and when each suction valve plate is closed, the slapping speeds of the left side and the right side of the head of the suction valve are the same, so that the reliability of the suction valve in operation is higher.
Description
Technical Field
The invention relates to a device for a closed refrigeration compressor to suck refrigerant into a cylinder, in particular to a suction valve group for a reciprocating compressor.
Background
The movement of the compressor piston causes the pressure in the cylinder to change, which results in the opening and closing of the suction valve plate. When the piston moves towards the tail of the cylinder, the pressure in the cylinder is smaller than the pressure in the shell of the compressor, the suction valve is opened at the moment, and the refrigerant in the shell enters the cylinder; when the piston moves towards the head of the cylinder, the pressure in the cylinder can be increased, and when the pressure in the cylinder is greater than the pressure in the shell, the suction valve is closed; when the pressure in the cylinder continues to increase and is greater than the pressure in the exhaust cavity, the exhaust valve is opened, and the refrigerant enters the exhaust cavity; when the piston moves to the top dead center and the exhaust is finished, the piston moves to the tail of the cylinder again, a new cycle is started, and the pressure in the cylinder of the reciprocating compressor is changed continuously, so that the opening and closing of the suction valve and the exhaust valve are caused.
In the field of household compressors, since the refrigerating capacity is not large, an arrangement mode of one air suction port and one air exhaust port is generally adopted, and the requirements of users on performance and reliability can be met. In the field of commercial compressors, since the refrigeration capacity of the compressor is generally large, the areas of the suction port and the exhaust port need to be increased, and designers usually arrange a plurality of suction ports and exhaust ports on the valve plate. However, due to the limitation of space, the rigidity of the suction valve plate and the discharge valve plate is often increased, but the dynamic performance of some valve plates is lost, and the working efficiency of the compressor is reduced.
Chinese patent publication No. CN104093984B discloses a suction valve assembly for a reciprocating compressor, which adopts an arrangement of double suction ports and double discharge ports, but because two suction valves are not symmetrical, when the suction valve plate is opened, the two sides of the root of the suction valve plate are stressed differently, and when the suction valve plate is closed, the two sides of the head of the valve plate slap against the valve seat at different speeds, which can increase the local stress on the suction valve plate and easily cause the problem of local breakage of the valve plate. In addition, the two exhaust holes of the invention are positioned at the periphery of the area of the suction valve on the suction valve plate, and the layout design is not beneficial to further increasing the area of the exhaust hole, so the suction valve group is not suitable for a commercial compressor with large cooling capacity.
Disclosure of Invention
The invention aims to provide a suction valve group for a reciprocating compressor, which can enable a refrigerant to flow more smoothly, has higher working reliability and can further improve the efficiency of the compressor.
In order to solve the technical problem, the suction valve group for the reciprocating compressor comprises a crankcase, a valve plate gasket, a suction valve plate and a valve plate, wherein the valve plate gasket, the suction valve plate and the valve plate are sequentially stacked and connected on the crankcase, two suction valves are distributed on the suction valve plate, the two suction valves are respectively symmetrical in shape along the central line of the suction valves, two suction ports are formed in the valve plate, and the two suction valves arranged on the suction valve plate respectively cover the two suction ports of the valve plate.
In the suction valve group for the reciprocating compressor, the crank case is provided with grooves at positions corresponding to two outer side root areas of the suction valve on the cylinder surface area.
In the above suction valve group for the reciprocating compressor, the groove formed on the crankcase is a straight groove, an inclined groove or an arc-shaped groove.
In the above suction valve group for the reciprocating compressor, grooves are formed in positions on the valve plate gasket corresponding to the root areas of the two outer sides of the suction valve.
The suction valve block for the reciprocating compressor is characterized in that two exhaust ports are arranged on the suction valve block and are respectively located in the surrounding area of the two suction valves.
The invention can increase the area of the air suction inlet and the air exhaust outlet to the utmost extent due to the adoption of the structure, so that the refrigerant flows more smoothly, the flow loss is reduced, and meanwhile, the air suction valve has smaller rigidity, so that the opening and the closing of the air suction valve are more efficient. When each suction valve is opened, the stress on two sides of the root of the suction valve is uniformly stressed, and when each suction valve plate is closed, the slapping speeds of the left side and the right side of the head of the suction valve are the same, so that the reliability of the suction valve in operation is higher.
Drawings
FIG. 1 is a schematic view of the installation position of a suction valve plate on a crankcase;
FIG. 2 is a schematic structural view of an intake valve plate;
FIG. 3 is a schematic view of the position of a groove formed in the crankcase;
FIG. 4 is a schematic view of the position of the groove formed in the gasket of the valve plate;
FIG. 5 is a schematic structural view of the valve plate, the suction valve plate, and the valve plate gasket mounted on the crankcase;
fig. 6 is an exploded view of the intake valve assembly of the present invention.
Detailed Description
As shown in fig. 1 and 6, the suction valve block of the present invention includes a crankcase 1, a valve plate gasket 2, a suction valve plate 3, and a valve plate 4. When mounting, as shown in fig. 6, the valve plate gasket 2, the suction valve plate 3, and the valve plate 4 are sequentially placed on the crankcase 1, and then these components are fixed to the crankcase 1 with screws.
As shown in fig. 2, two suction valves 3a and 3b are disposed on the suction valve plate 3, and the shapes of the two suction valves 3a and 3b are respectively symmetrical along the center line of the two suction valves.
As shown in fig. 5, the valve plate 4 is provided with two suction ports 4a and 4b, and the two suction valves 3a and 3b of the suction valve sheet 3 are respectively covered on the two suction ports 4a and 4b of the valve plate 4.
As shown in fig. 3, the crankcase 1 is provided with two grooves for avoiding the outer base regions 3c and 3d of the two intake valves 3a and 3b at positions corresponding to the outer base regions 3c and 3d of the intake valves 3a and 3b in the regions of the cylinder faces 1a and 1 b. The two grooves can be straight grooves, inclined grooves, arc-shaped grooves and the like.
As shown in fig. 4, the valve plate spacer 2 is provided with two grooves at positions 2a and 2b corresponding to the outer base regions 3c and 3d of the two intake valves 3a and 3b, respectively, for avoiding the outer base regions 3c and 3d of the two intake valves 3a and 3 b.
As shown in fig. 2, the intake valve plate 3 is provided with two exhaust ports 3e and 3f, the exhaust port 3e is located in the area surrounded by the intake valve 3a, and the exhaust port 3f is located in the area surrounded by the intake valve 3 b.
Compared with the prior art, the invention has the following obvious and prominent substantive characteristics and remarkable progress: 1. the areas of the air suction port and the air exhaust port are increased to the maximum extent, so that the refrigerant flows more smoothly, and the flow loss is reduced. 2. The shape and the position of the air suction valve plate are distributed, so that the air suction valve has lower rigidity, the air suction valve plate is opened and closed more conveniently, and the efficiency of the compressor is improved. 3. Each air suction valve is symmetrical about the center line of the air suction valve, when each air suction valve plate is opened, the stress on two sides of the root of the air suction valve is uniformly stressed, and when each air suction valve plate is closed, the slapping speeds of the left side and the right side of the head of the air suction valve are the same, so that the air suction valve is high in reliability when in work. Fourthly, the installation of the air suction valve group is convenient, and additional parts are not required to be added.
Claims (3)
1. The suction valve group for the reciprocating compressor comprises a crankcase, a valve plate gasket, a suction valve plate and a valve plate, wherein the valve plate gasket, the suction valve plate and the valve plate are sequentially stacked and connected on the crankcase; the air suction valve plate is provided with two air exhaust ports, and the two air exhaust ports are respectively positioned in the surrounding areas of the two air suction valves; and grooves are formed in positions, corresponding to the root areas of the two outer sides of the air suction valve, on the valve plate gasket.
2. A suction valve group for a reciprocating compressor, as set forth in claim 1, wherein the crank cases are respectively provided with grooves at positions corresponding to both outer side root regions of the suction valve on the cylinder face region.
3. A suction valve group for reciprocating compressor according to claim 2, wherein said groove provided on said crank case is shaped as a straight groove, an inclined groove or an arc groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711310311.8A CN108302013B (en) | 2017-12-11 | 2017-12-11 | A valve train of breathing in for reciprocating compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711310311.8A CN108302013B (en) | 2017-12-11 | 2017-12-11 | A valve train of breathing in for reciprocating compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108302013A CN108302013A (en) | 2018-07-20 |
| CN108302013B true CN108302013B (en) | 2020-02-07 |
Family
ID=62869792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711310311.8A Active CN108302013B (en) | 2017-12-11 | 2017-12-11 | A valve train of breathing in for reciprocating compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108302013B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2945179B2 (en) * | 1991-07-20 | 1999-09-06 | トキコ株式会社 | Reciprocating compressor |
| US5140748A (en) * | 1991-08-12 | 1992-08-25 | Tecumseh Products Company | Method of manufacturing plate suction valve |
| CN206092338U (en) * | 2016-10-12 | 2017-04-12 | 黄石东贝电器股份有限公司 | Valve assembly and compressor are inhaled to double tongue spring |
| CN106837746A (en) * | 2017-02-07 | 2017-06-13 | 广州万宝集团压缩机有限公司 | A kind of plate member |
| CN207847900U (en) * | 2017-12-11 | 2018-09-11 | 加西贝拉压缩机有限公司 | A kind of air-breathing valve group for reciprocating compressor |
-
2017
- 2017-12-11 CN CN201711310311.8A patent/CN108302013B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108302013A (en) | 2018-07-20 |
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