CN200993087Y - Compressor with balance shaft seal - Google Patents

Compressor with balance shaft seal Download PDF

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Publication number
CN200993087Y
CN200993087Y CN 200620162568 CN200620162568U CN200993087Y CN 200993087 Y CN200993087 Y CN 200993087Y CN 200620162568 CN200620162568 CN 200620162568 CN 200620162568 U CN200620162568 U CN 200620162568U CN 200993087 Y CN200993087 Y CN 200993087Y
Authority
CN
China
Prior art keywords
ring
compressor
spring
axle envelope
balanced type
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
Application number
CN 200620162568
Other languages
Chinese (zh)
Inventor
李春银
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.)
Shanghai Sanden Behr Automotive Air Conditioning Co Ltd
Original Assignee
Shanghai Sanden Behr Automotive Air Conditioning 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 Shanghai Sanden Behr Automotive Air Conditioning Co Ltd filed Critical Shanghai Sanden Behr Automotive Air Conditioning Co Ltd
Priority to CN 200620162568 priority Critical patent/CN200993087Y/en
Application granted granted Critical
Publication of CN200993087Y publication Critical patent/CN200993087Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a compressor with balance shaft seal which comprises a static ring, a movable ring, a push ring, a spring and a spring seat that are sleeved on the principle axis; a static ring sealing ring is positioned between the periphery of the static ring and the front cover inner hole, a movable seal ring is installed between the inside of the movable ring and the principle axis; the static ring is fixed at the front end of the front cover inner hole and crosses the top board of the front end of the inner hole and the fastening bolt to realize axial positioning; one end of the movable ring abuts to the static ring while the other end is connected with the principle axis through the push ring and the spring seat. A spring is installed between the spring seat and the push ring and the movable ring is attached with the static ring by the pressure of the spring. The movable ring has a left ring surface and a right ring surface whose sizes are equally large and the left and the right stress of the movable ring is balanced under the action of fluid media to reduce the acting force between the movable ring and the static ring head face so as to reduce wearing. The utility model solves the problem of refrigeration oil leakage and the leakage of refrigeration working substance caused by wearing of the lips mouth and the surface of the drive shaft when use carbon dioxide as the refrigeration working substance and the shaft seal is bearing large axial force.

Description

Compressor with balanced type axle envelope
Technical field
The utility model relates to the employed compressor in a kind of automotive air-conditioning system, relates in particular to the compressor with balanced type axle envelope.
Background technique
In the existing piston formula rotation swash plate compressor, the structure that adopts generally can be divided into two kinds of single acting piston formula and bidirectional piston formulas, single acting piston formula swash plate compressor arrangement as shown in Figure 1, the compressor of this form is mainly by front case 11, cylinder block 12, live axle 17, single lip axle envelope 16 and rotation swash plate parts 18, rear case 15, crawler shoe 13, piston 14, plate member 19 parts such as grade are formed, piston is a single acting piston, be installed in the piston hole of cylinder block 12, be connected on the rotation swash plate 18 by crawler shoe 13, be fixed on front case 11 and the cylinder block 12 live axle 17 and drive swash plates 18 and rotatablely move to make in the rhythmical some piston holes on cylinder block 12 of piston and do linear reciprocating motion, promptly compressor is air-breathing, exhaust process.
Bidirectional piston formula swash plate compressor arrangement as shown in Figure 2, the compressor of this form is mainly by front case 21, front-bank rotor housing 22, rear-bank rotor housing 22 ', live axle 27, lips mouth axle envelope 26 and rotation swash plate 28, rear case 25, crawler shoe 23, piston 24, parts such as back plate member 29 and preceding plate member 29 ' are formed, piston is a bidirectional piston, two ends are installed in respectively in the piston hole of front-bank rotor housing 22 and rear-bank rotor housing 22 ', be connected on the rotation swash plate 28 by crawler shoe 23, being fixed on front-bank rotor housing 22 and rear-bank rotor housing 22 ' goes up live axle 27 and drives swash plates 28 and rotatablely move, make the two ends of bidirectional piston do linear reciprocating motion in the some piston holes on front-bank rotor housing 22 and rear-bank rotor housing 22 ' respectively, promptly compressor is air-breathing, exhaust process.
When using CFC12 or HFC134a as refrigeration working medium, more than the compressor of two kinds of structures all applicable, and in the environmental protection type refrigeration system of carbon dioxide as refrigeration working medium, because the working pressure of compressor inside is very high, be about 10 times of common HFC134a compressor, if adopt the compressor of single acting piston formula structure shown in Figure 1, single lip axle envelope 16 will be born very big axial force and be made wearing and tearing aggravation between lip and live axle 17 surfaces, cause refrigeration working medium and refrigeration oil to leak compressor failure.If adopt the compressor of bidirectional piston formula structure shown in Figure 2, on the one hand because all there are suction valve chip and exhaust valve plate and valve plate in the front end and back end of compressor, the structure more complicated, to make the front case 21 of compressor bear high pressure on the other hand, lips mouth axle envelope 26 makes lip and 27 wearing and tearing of live axle, leaks compressor failure under very big responsive to axial force.
The model utility content
Technical problem to be solved in the utility model provides a kind of compressor with balanced type axle envelope, can reduce the wearing and tearing between axle envelope and the main shaft.
The utility model is to solve the problems of the technologies described above the technological scheme that adopts to provide a kind of compressor with balanced type axle envelope, and described axle package is drawn together stationary ring, rotating ring, throw-out collar, spring and the spring seat that is sheathed on successively on the main shaft; Described stationary ring is fixed in described protecgulum endoporus front end, is provided with the stationary ring seal ring between stationary ring periphery and the protecgulum endoporus; Described rotating ring one end and described stationary ring are fitted, and the other end and described throw-out collar are in transmission connection, and are provided with seal ring of moving ring between week and the described main shaft in the rotating ring; Described throw-out collar and described spring seat are in transmission connection, and described spring seat is fixedlyed connected with described main shaft, are provided with described spring between spring seat and the throw-out collar.
In the above-mentioned compressor with balanced type axle envelope, also comprise a top board, be located at the front end of described protecgulum endoporus and offset, fix by position limit pin between top board and the stationary ring with described stationary ring.
In the above-mentioned compressor, also comprise a Cock screw, be locked on described top board front end with the described stationary ring of axial restraint with balanced type axle envelope.
In the above-mentioned compressor with balanced type axle envelope, described rotating ring has opposing left anchor ring and right anchor ring, and described left anchor ring and right anchor ring area equate.
In the above-mentioned compressor, also be provided with a gasket ring between week and the described main shaft in the described rotating ring with balanced type axle envelope.
In the above-mentioned compressor with balanced type axle envelope, respectively be provided with the spring containing groove on the opposite side of described spring seat and described throw-out collar, described spring places between the spring containing groove of spring seat and throw-out collar.
In the above-mentioned compressor with balanced type axle envelope, described spring seat is connected by connecting key with described main shaft.
In the above-mentioned compressor with balanced type axle envelope, be connected by tongue and groove between described spring seat and the described throw-out collar.
In the above-mentioned compressor with balanced type axle envelope, be connected by tongue and groove between described throw-out collar and the described rotating ring.
In the above-mentioned compressor with balanced type axle envelope, described compressor has the pilot hole for piston motion, is provided with the oil duct that is communicated with between pilot hole and the described protecgulum endoporus.
The utility model is by adopting novel balanced type mechanical shaft seal structure in compressor, solved when using carbon dioxide the axle envelope and born very big axial force and make between lip and drive shaft surface and wear and tear, caused refrigeration working medium and refrigeration oil leakage problem as refrigeration working medium.Design oil duct simultaneously, the refrigeration oil that will have a certain pressure is guided on the seal-moving surface of shaft seal structure and is lubricated, and reaching increases compressor reliability and prolong the compressor purpose in working life.
Description of drawings
Below in conjunction with the drawings and specific embodiments feature and advantage of the present utility model are described, wherein:
Fig. 1 is existing single acting piston formula swash plate compressor sectional drawing;
Fig. 2 is existing bidirectional piston formula swash plate compressor sectional drawing;
Fig. 3 is the axle envelope sectional drawing with compressor of balanced type axle envelope of the present utility model;
Fig. 4 is the compressor sectional view with balanced type axle envelope of the present utility model;
Fig. 5 is the partial enlarged drawing at Fig. 4 axle envelope place.
Embodiment
At first have the shaft seal structure of the compressor of balanced type axle envelope in conjunction with Fig. 3 explanation, this envelope 3 has stationary ring 30, stationary ring seal ring 31, rotating ring 32, gasket ring 33, seal ring of moving ring 34, throw-out collar 35, spring 36 and spring seat 37.Wherein stationary ring 30 keeps static when compressor main shaft rotates, and rotating ring 32 can be with main axis rotation, and rotating ring 32 fits with stationary ring 30, and its faying surface is the plane, plays seal action.Rotating ring 32 links to each other with throw-out collar 35 transmissions, and throw-out collar 35 links to each other with spring seat 37 transmissions, and spring seat 37 is used for linking to each other with main shaft (Fig. 3 does not show) transmission of compressor.In one embodiment, rotating ring 32, throw-out collar 35 and 37 of spring seats all link to each other by tongue and groove.Be respectively equipped with spring containing groove 350,370 on the opposite side of throw-out collar 35 and spring seat 37, spring 36 places in two relative spring containing grooves, and its elastic force is delivered on the rotating ring 32, and making between rotating ring 32 and the stationary ring 30 has certain impacting force.Stationary ring 30 peripheries are provided with stationary ring seal ring 31, have an endoporus week in the rotating ring 32, are provided with seal ring of moving ring 34 and gasket ring 33 in it.
Fig. 4 is the compressor sectional view with balanced type axle envelope of the present utility model, and axle envelope 3 shown in Figure 3 has been installed in this compressor.Compressor comprises protecgulum 41, compressor main shaft 47, balanced type axle envelope 3, swash plate 48, crawler shoe 43, piston 44 and valve plate 49.During compressor operating, motor is passed to belt pulley (not drawing among the figure) on the compressor by belt with power, drive main shaft 47 rotations by clutch, through being fixed on swash plate 48, the crawler shoe 43 on the main shaft, make piston 44 do linear reciprocating motion, the piston right-hand component is the working end, left-hand component is guide end, right-hand member moves, and constitutes active chamber with plate member 49, realizes air-breathing, the exhaust process of compressor.
Below in conjunction with Fig. 4 and explanation compressor shown in Figure 5 structure in the installation place of axle envelope 3, axle envelope 3 is installed in the endoporus 410 of protecgulum 41, and between endoporus 410 and main shaft 47.Stationary ring 30, rotating ring 32, throw-out collar 35, spring 36 and spring seat 37 all are sheathed on the main shaft.Wherein stationary ring 30 is fixed in endoporus 410 front ends, by stationary ring seal ring 31 and endoporus 410 sealings.Be provided with a top board 38 at the endoporus front end and offset with stationary ring 30, fixing between top board 38 and the stationary ring 30 by position limit pin 380, prevent stationary ring 30 rotations.Top board 38 front ends also have a Cock screw 39, are locked in top board 38 front ends so that stationary ring 30 axially locating.The endoporus of rotating ring 32 and main shaft 47 surfaces are by seal ring of moving ring 34 sealings.Main shaft 47 drives spring seat 37 rotations by connecting key 470.Owing to link to each other by drive mechanism between the spring seat 37, throw-out collar 35, rotating ring 32, thereby make rotating ring 32 rotations, as the gas pressure of refrigeration working medium (CO for example such as tongue and groove 2) and the effect of spring 36 under, rotating ring 32 is fitted and relative rotation mutually with stationary ring 30 end faces, thereby realizes dynamic seal (packing).Rotating ring 32 has opposing left anchor ring 32A and right anchor ring 32B, and the two area approximation equates, left and right sides stress balance under the pressurized gas effect, thus the active force between minimizing rotating ring and the stationary ring end face reduces wear.
In addition, in the pilot hole 41A for the piston linear motion of protecgulum 41, open several oil duct 41B, the refrigeration oil among the pilot hole 41A is guided to rotating ring 32 and stationary ring 30 counterfaces, thereby realize that the axle envelope is lubricated.
Compressor of the present utility model has reduced the wearing and tearing of axle envelope with main shaft owing to adopt the balanced type mechanical shaft seal and be the corresponding improvement of fitted shaft Feng Erzuo, and this compressor is particularly suitable for adopting carbon dioxide as refrigeration working medium.
Above embodiment's explanation only is preferred embodiment explanation of the present utility model, and those skilled in the art can make the replacement and the modification of other all equivalence according to the foregoing description explanation of the present utility model.Yet these are replaced and revise according to all equivalences that the utility model embodiment is done, and belong to model utility spirit of the present utility model and reach by in the claim that claim defined.

Claims (10)

1. one kind has the compressor that the balanced type axle seals, comprise protecgulum, be located at the main shaft in the protecgulum endoporus and be located at main shaft with endoporus and the protecgulum endoporus between the axle envelope, it is characterized in that described axle package is drawn together stationary ring, rotating ring, throw-out collar, spring and the spring seat that is sheathed on successively on the main shaft; Described stationary ring is fixed in described protecgulum endoporus front end, is provided with the stationary ring seal ring between stationary ring periphery and the protecgulum endoporus; Described rotating ring one end and described stationary ring are fitted, and the other end and described throw-out collar are in transmission connection, and are provided with seal ring of moving ring between week and the described main shaft in the rotating ring; Described throw-out collar and described spring seat are in transmission connection, and described spring seat is fixedlyed connected with described main shaft, are provided with described spring between spring seat and the throw-out collar.
2. the compressor with balanced type axle envelope as claimed in claim 1 is characterized in that, also comprises a top board, is located at the front end of described protecgulum endoporus and offsets with described stationary ring, fixes by position limit pin between top board and the stationary ring.
3. the compressor with balanced type axle envelope as claimed in claim 2 is characterized in that, also comprises a Cock screw, is locked on described top board front end with the described stationary ring of axial restraint.
4. the compressor with balanced type axle envelope as claimed in claim 1 is characterized in that described rotating ring has opposing left anchor ring and right anchor ring, and described left anchor ring and right anchor ring area equate.
5. the compressor with balanced type axle envelope as claimed in claim 1 is characterized in that, also is provided with a gasket ring between week and the described main shaft in the described rotating ring.
6. the compressor with balanced type axle envelope as claimed in claim 1 is characterized in that respectively be provided with the spring containing groove on the opposite side of described spring seat and described throw-out collar, described spring places between the spring containing groove of spring seat and throw-out collar.
7. the compressor with balanced type axle envelope as claimed in claim 1 is characterized in that described spring seat is connected by connecting key with described main shaft.
8. the compressor with balanced type axle envelope as claimed in claim 1 is characterized in that, is connected by tongue and groove between described spring seat and the described throw-out collar.
9. the compressor with balanced type axle envelope as claimed in claim 1 is characterized in that, is connected by tongue and groove between described throw-out collar and the described rotating ring.
10. the compressor with balanced type axle envelope as claimed in claim 1 is characterized in that described compressor has the pilot hole for piston motion, is provided with the oil duct that is communicated with between pilot hole and the described protecgulum endoporus.
CN 200620162568 2006-12-30 2006-12-30 Compressor with balance shaft seal Expired - Fee Related CN200993087Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620162568 CN200993087Y (en) 2006-12-30 2006-12-30 Compressor with balance shaft seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620162568 CN200993087Y (en) 2006-12-30 2006-12-30 Compressor with balance shaft seal

Publications (1)

Publication Number Publication Date
CN200993087Y true CN200993087Y (en) 2007-12-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200620162568 Expired - Fee Related CN200993087Y (en) 2006-12-30 2006-12-30 Compressor with balance shaft seal

Country Status (1)

Country Link
CN (1) CN200993087Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104896104A (en) * 2015-05-25 2015-09-09 浙江工业大学 Online adjustable closing force gas lubricating mechanical sealing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104896104A (en) * 2015-05-25 2015-09-09 浙江工业大学 Online adjustable closing force gas lubricating mechanical sealing device

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20071219

Termination date: 20141230

EXPY Termination of patent right or utility model