CN201437766U - Cylinder cover for compressor - Google Patents
Cylinder cover for compressor Download PDFInfo
- Publication number
- CN201437766U CN201437766U CN200920078198XU CN200920078198U CN201437766U CN 201437766 U CN201437766 U CN 201437766U CN 200920078198X U CN200920078198X U CN 200920078198XU CN 200920078198 U CN200920078198 U CN 200920078198U CN 201437766 U CN201437766 U CN 201437766U
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- CN
- China
- Prior art keywords
- partition wall
- endoseptum
- cylinder
- compressor
- intermediate bulkheads
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a cylinder cover for a compressor, which comprises an inner partition wall, a middle partition wall and an outer partition wall which are distributed in sequence from the inner side to the outer side. A first air suction chamber is formed at the inner side of the inner partition wall, an exhaust chamber is formed between the inner partition wall and the middle partition wall, and a second air suction chamber is formed between the middle partition wall and the outer partition wall, and wherein the middle partition wall is higher than both the inner partition wall and the outer partition wall. The cylinder cover adopts two air suction chambers and one exhaust chamber which are communicated with each other, gives full consideration to the deformation of the parts of the cylinder and the cylinder cover, which is caused by internal gas pressure change inside the cylinder during the work of the compressor, and reaches the purpose of preventing gas leakage by prearranging the space for the deformation.
Description
Technical field
The utility model relates to the automobile air conditioner compressor field, more particularly, relates to the cylinder head of automobile air conditioner compressor.
Background technique
Piston compressor is finished suction, compression and the discharging of refrigeration agent by the to-and-fro motion in each cylinder of a plurality of pistons; The plate member, the piston that are provided with between cylinder head and the cylinder move to the top, and cylinder pressure reduces, and enters cylinder so suction valve chip is opened refrigeration agent from air aspiration cavity, piston moves to the bottom, cylinder pressure raises, then exhaust valve plate open, refrigeration agent from inblock cylinder to exhaust cavity.
For easy to process, the cylinder head of most of forms and valve plate or be the plane with the end face that contacts between the head gasket.Application number is the fit form that has disclosed a kind of cylinder head and valve plate in the Chinese utility model patent of CN86201843U, as shown in Figure 1, endoseptum 13b is exhaust cavity 35 and air aspiration cavity 34 with cylinder head 13,35 of exhaust cavitys are with the inboard and 34 of the air aspiration cavitys and the outside, the a little higher than outer next door 13a of the height of endoseptum 13b, can will thoroughly separate between air aspiration cavity and the exhaust cavity like this, to guarantee refrigerating efficiency.
There is following defective in the cylinder head of this kind structure: do not consider gas pressure change causes in the cylinder in compressor operation the cylinder part and the distortion of cylinder head, above-mentioned distortion can cause the leakage of gas.
The model utility content
Embodiment of the present utility model proposes a kind of new cylinder head, comprises two air aspiration cavitys that are positioned at inboard and the outside and is positioned at the intermediate exhaust chamber, and at the layout feature of this suction air cavity, reserved the space that is out of shape.
According to an embodiment of the present utility model, disclosed a kind of cylinder of compressor lid, cylinder head comprise the endoseptum that distributes successively laterally from the inboard, intermediate bulkheads and outside the next door; The inboard of endoseptum forms to form between first air aspiration cavity, endoseptum and the intermediate bulkheads and forms second air aspiration cavity between exhaust cavity, intermediate bulkheads and the outer next door, and wherein intermediate bulkheads is higher than endoseptum, and intermediate bulkheads is higher than outer next door.
According to an embodiment, between first air aspiration cavity and second air aspiration cavity by channel connection.
According to an embodiment, the height difference of intermediate bulkheads and endoseptum is less than the thickness of exhaust valve plate.
According to an embodiment, intermediate bulkheads and endoseptum are in compressive state in the static situation of compressor, are in the free state of stretching, extension in the compressor operating situation.
Cylinder head of the present utility model is used two air aspiration cavitys and exhaust cavity that is interconnected, taken into full account the cylinder part that gas pressure change causes in the cylinder in the compressor operation and the distortion of cylinder head, reached the purpose that prevents gas leakage by the space of reserving distortion.
Description of drawings
The above and other feature of the present utility model, character and advantage will become more obvious by the description below in conjunction with drawings and Examples, in the accompanying drawings, identical reference character is represented identical feature all the time, wherein:
Fig. 1 has disclosed the structure of cylinder head of the prior art;
Fig. 2 has disclosed the structure according to an embodiment's of the present utility model bi-directional swash plate type compressor;
Fig. 3 A and 3B have disclosed the working principle of cylinder head;
Fig. 4 A and 4B have disclosed the working principle according to an embodiment's of the present utility model cylinder head.
Embodiment
According to embodiment of the present utility model, disclosed a kind of cylinder of compressor lid, cylinder head comprise the endoseptum that distributes successively laterally from the inboard, intermediate bulkheads and outside the next door; The inboard of endoseptum forms to form between first air aspiration cavity, endoseptum and the intermediate bulkheads between exhaust cavity, intermediate bulkheads and the outer next door and forms second air aspiration cavity, between first air aspiration cavity and second air aspiration cavity by channel connection.
In order to tackle gas pressure change causes in the cylinder in the compressor operation the cylinder part and the distortion of cylinder head preferably, intermediate bulkheads is higher than endoseptum, and intermediate bulkheads is higher than outer next door.And the height difference of intermediate bulkheads and endoseptum is less than the thickness of exhaust valve plate.Endoseptum is higher than outer next door.Intermediate bulkheads and endoseptum are in compressive state in the static situation of compressor, are in the free state of stretching, extension in the compressor operating situation.
With reference to shown in Figure 2, Fig. 2 has disclosed the structure according to an embodiment's of the present utility model bi-directional swash plate type compressor.This bi-directional swash plate type compressor comprises cylinder body 1, cylinder liner 2, cylinder 3, suction valve chip 4, valve plate 5, exhaust valve plate 6, cylinder cover cushion 7 and cylinder head 8, and above-mentioned parts are installed successively.The outside of parts such as cylinder body 1, cylinder head 8 is connected by some bolts 22 and compresses.Cylinder head 8 comprises endoseptum 8A, intermediate bulkheads 8B, outer next door 8C, and endoseptum 8A, intermediate bulkheads 8B, outer next door 8C are according to being disposed in order laterally from the inboard.Endoseptum 8A, intermediate bulkheads 8B, outer next door 8C are divided into the first air aspiration cavity 20A, exhaust cavity 21, the second air aspiration cavity 20B with cylinder head, are communicated with by pipeline 23 between the first air aspiration cavity 20A and the second air aspiration cavity 20B.It is reciprocating that the rotation of swash plate 10 drives piston 11, when piston moves towards the top, cylinder 3 internal pressures reduce, suction valve chip 4 is opened, refrigeration agent enters cylinder from the first air aspiration cavity 20A and the second air aspiration cavity 20B by the suction port on the valve plate 5, and when piston moved towards the bottom, cylinder 3 internal pressures increased, exhaust valve plate 6 is pushed open, and refrigeration agent enters exhaust cavity 21 from cylinder 3 by the exhaust port on the valve plate.
Because the integral pressure in each chamber of compressor cylinder cover is greater than external atmosphere pressure, cylinder head 8 is the trend of outside protrusion distortion, relies on the tractive force of bolt 22 and is fixed on the cylinder body 1.Be to be low pressure (but this lowpressure generally is higher than external atmosphere pressure) in high pressure, the air aspiration cavity in the exhaust cavity, so being the position of exhaust cavity, the middle part of cylinder head 8 can produce bigger axial protruding distortion, if arrange according to compressor intermediate bulkheads and the contour mode in outer next door, then shown in Fig. 3 A and Fig. 3 B, (as shown in Figure 3A) each parts are in normal state when static.The aluminium alloy cylinder lid is influenced by exhaust pressure F during work, axial protruding distortion appears in the distortion of generation shown in Fig. 3 B, intermediate portion, produces relatively large distortion from clamping bolt endoseptum far away, intermediate bulkheads also produces certain distortion, causes the gas of exhaust cavity to leak to air aspiration cavity.
In order to eliminate this phenomenon, shown in figure 4A and Fig. 4 B, in embodiment of the present utility model, the intermediate bulkheads height of cylinder head is arranged to all higher slightly than inside and outside next door, and total height was higher than intermediate bulkheads after the endoseptum height was loaded onto exhaust valve plate, and promptly the height difference of intermediate bulkheads and endoseptum is less than the thickness of exhaust valve plate.Form is that endoseptum is simultaneously a little more than outer next door preferably.Like this, bolt pretightening tightly is buckled in bonnet on the cylinder body, and when compressor was static, intermediate bulkheads and endoseptum were in compressive state, and the stressed generation micro-strain of cylinder head bottom surface, intermediate bulkheads and endoseptum is shown in Fig. 4 A; When compressor operating, intermediate bulkheads and endoseptum trail, and are free state, shown in Fig. 4 B.This mode can prevent the phenomenon of the gas leakage shown in Fig. 3 A and the 3B effectively.
Cylinder head of the present utility model is used two air aspiration cavitys and exhaust cavity that is interconnected, taken into full account the cylinder part that gas pressure change causes in the cylinder in the compressor operation and the distortion of cylinder head, reached the purpose that prevents gas leakage by the space of reserving distortion.
The foregoing description provides to being familiar with the person in the art and realizes or use of the present utility model; those skilled in the art can be under the situation that does not break away from invention thought of the present utility model; the foregoing description is made various modifications or variation; thereby protection domain of the present utility model do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (4)
1. cylinder of compressor lid, described cylinder head comprise the endoseptum that distributes successively laterally from the inboard, intermediate bulkheads and outside the next door;
The inboard of described endoseptum forms to form between first air aspiration cavity, endoseptum and the intermediate bulkheads and forms second air aspiration cavity between exhaust cavity, intermediate bulkheads and the outer next door, it is characterized in that described intermediate bulkheads is higher than endoseptum, and described intermediate bulkheads is higher than outer next door.
2. cylinder head as claimed in claim 1 is characterized in that,
Between described first air aspiration cavity and second air aspiration cavity by channel connection.
3. cylinder head as claimed in claim 2 is characterized in that,
The height difference of described intermediate bulkheads and endoseptum is less than the thickness of exhaust valve plate.
4. cylinder head as claimed in claim 2 is characterized in that,
Described intermediate bulkheads and endoseptum are in compressive state in the static situation of compressor, are in the free state of stretching, extension in the compressor operating situation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920078198XU CN201437766U (en) | 2009-07-14 | 2009-07-14 | Cylinder cover for compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920078198XU CN201437766U (en) | 2009-07-14 | 2009-07-14 | Cylinder cover for compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201437766U true CN201437766U (en) | 2010-04-14 |
Family
ID=42399740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920078198XU Expired - Fee Related CN201437766U (en) | 2009-07-14 | 2009-07-14 | Cylinder cover for compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201437766U (en) |
-
2009
- 2009-07-14 CN CN200920078198XU patent/CN201437766U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Shanghai City 200025 Madang Road No. 347 Patentee after: SANDEN HUAYU AUTOMOTIVE AIR-CONDITIONING CO., LTD. Address before: Shanghai City 200025 Madang Road No. 347 Patentee before: Sandian Beier Automobile Air-Conditioner Co., Ltd., Shanghai |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100414 Termination date: 20180714 |