CN209308922U - A kind of crankshaft for refrigeration compressor case - Google Patents
A kind of crankshaft for refrigeration compressor case Download PDFInfo
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- CN209308922U CN209308922U CN201821755397.5U CN201821755397U CN209308922U CN 209308922 U CN209308922 U CN 209308922U CN 201821755397 U CN201821755397 U CN 201821755397U CN 209308922 U CN209308922 U CN 209308922U
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- crankshaft
- refrigeration compressor
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Abstract
The utility model discloses a kind of crankshaft for refrigeration compressor casees, including cylinder head, cylinder face, cylinder-bore, screw hole, gas vent and groove, cylinder face is set to the front end of cylinder head, and cylinder face is a flat surface, and cylinder-bore, screw hole, gas vent are set on cylinder face；Groove is set on cylinder face and is distributed in around cylinder-bore, and groove is not attached to lead to cylinder-bore, gas vent, screw hole, and the shortest distance between the edge and cylinder-bore of groove, gas vent, screw hole is respectively 2~8mm.Sealing characteristics, heat dissipation performance and the non-deformability of the utility model crankcase energy while lifting cylinder, to promote the performance and reliability of compressor.It implements simply, and easy to operate, improving cost is low, and combination is flexible, can be used for producing in enormous quantities.
Description
Technical field
The utility model relates to arrive refrigeration compressor art, specifically a kind of crankshaft for refrigeration compressor case.
Background technique
Currently, piston reciprocating compressor is widely used in refrigeration compressor art.In piston reciprocating compressor, crankshaft
The cylinder portion of case is its groundwork region, and piston makees high speed reciprocating motion in cylinder, realizes refrigerant in compressor, ice
Circulation inside case.Fig. 1 and as existing a kind of structure of crankcase shown in Fig. 2, cylinder face 2 are arranged on cylinder head 11,
Screw hole 1, gas vent 3, cylinder-bore 4 are set on cylinder face 2.Piston moves in the cylinder, getter assembly (including valve plate, valve
Piece, inhaling silencer etc.) it is fastened on cylinder head 11 by screw and screw hole 1.The characteristic requirements of cylinder mainly include following
Three aspects: 1, cylinder needs preferable sealing characteristics, prevents refrigerant from leaking；2, cylinder needs good heat dissipation performance,
Suction superheat is prevented to reduce gettering efficiency；3, stomata needs preferable non-deformability, in temperature change (from -50 DEG C
To 120 DEG C or so), torque loading, piston friction, thrust gas the effects of under, the deflection of cylinder-bore needs to control certain
In range.For the requirement and energy saving, Silent refrigerator market mainstream developing trend for adapting to national energy-saving consumption reduction, refrigeration compressor neck
Following some improved methods are generallyd use in domain: 1, in lift-off seal, the flatness of cylinder end face can be improved, or adopt
With iron-based gasket；2, it in heat radiation performance, can be realized by increasing the cavity of inhaling silencer, or pass through optimization
Pouring technology carrys out the uniformity of lifting cylinder internal density；3, in terms of resistance to deformation, screw torque can be suitably reduced, can increase and add
Thick cylinder head.The above measure, there are certain contradictions for some, and cylinder deformation can be reduced still not by such as reducing screw torque
Conducive to sealing；And some technical process are complex, such as optimize pouring technology and need lot of experiment validation (casting formula, casting
Temperature, cavity design etc.)；And some will increase more cost, such as use iron-based gasket.In current compressor miniaturization
Under trend, complex process, cost increase can become the larger resistance that product is introduced to the market.How more simple, behaviour is passed through
The property made is good, inexpensive measure solves the problems, such as that this becomes the project to study for a long period of time of this field one.
Summary of the invention
The technical problem to be solved by the utility model is to propose it is a kind of can simultaneously lifting cylinder sealing characteristics, heat dissipation
Performance and non-deformability, to promote the performance of compressor and the crankshaft for refrigeration compressor case of reliability.
In order to solve the above technical problems, a kind of crankshaft for refrigeration compressor case of the utility model include cylinder head, cylinder face,
Cylinder-bore, screw hole, gas vent and groove, the cylinder face are set to the front end of cylinder head, and the cylinder face is a flat surface, described
Cylinder-bore, screw hole, gas vent are set on the cylinder face；The groove is set on the cylinder face and is distributed in the gas
Around cylinder holes, the groove is not attached to lead to the cylinder-bore, gas vent, screw hole, the edge of the groove and the cylinder
The shortest distance between hole, gas vent, screw hole is respectively 2~8mm.
A kind of above-mentioned crankshaft for refrigeration compressor case, the cylinder head are the geometry of rule, such as rectangle, trapezoidal；
It may be non-regular shape, as cross is petal.
A kind of above-mentioned crankshaft for refrigeration compressor case, the groove are distributed in the cylinder-bore and the screw hole and exhaust
Between hole, the width of the groove is 1~6mm, and the depth of the groove is 1~10mm.
A kind of above-mentioned crankshaft for refrigeration compressor case, the groove include the straight trough on top, the annular groove at middle part and lower part
Straight trough, the straight trough is connected to the annular groove respectively.
A kind of above-mentioned crankshaft for refrigeration compressor case, the straight trough on the top have three, respectively from the intermediate and left and right sides
It is connected into the annular groove at the middle part.
A kind of above-mentioned crankshaft for refrigeration compressor case, the groove further include the skewed slot for having on both sides of the middle, the skewed slot with
The annular groove is connected.
A kind of above-mentioned crankshaft for refrigeration compressor case, the groove include middle part annular groove and lower part straight trough, it is described
Straight trough is connected to the annular groove.
A kind of above-mentioned crankshaft for refrigeration compressor case, the groove use casting technique moulding by casting, or using machining
Equipment carries out following process.
The utility model is by adopting the above-described technical solution, the groove being arranged on cylinder face forms runner, from cylinder head
The refrigeration oil of top accumulation can flow downward from the top down and from two sides along groove, the heat of cylinder head high-speed friction and compression
Amount is frozen oily absorption, thus can promote gettering efficiency using heat exchange.Meanwhile after groove is set, the torsion of four screws
Square would not be transferred directly to cylinder axis to the deformation of cylinder bring, so as to be efficiently modified the deformation of cylinder-bore, reduce
Friction power loss.And by designing special-shaped (non-regular shape) cylinder head engagement groove structure, plane deformation can be brought equal torque
Even dispersion, lift-off seal characteristic, while also having both the characteristic of heat dissipation and resistance to deformation.To sum up, the utility model can promote gas simultaneously
Sealing characteristics, heat dissipation performance and the non-deformability of cylinder, to improve the performance and reliability of compressor.It implements simply,
Easy to operate, improving cost is low, and combination is flexible, can be used for producing in enormous quantities.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of existing crankcase；
Fig. 2 is the positive structure schematic relative to Fig. 1；
Fig. 3 is a kind of structural schematic diagram of embodiment of the utility model crankcase；
Fig. 4 is the positive structure schematic relative to Fig. 3；
Fig. 5 is the structural schematic diagram of second of embodiment of the utility model crankcase；
Fig. 6 is the positive structure schematic relative to Fig. 5；
Fig. 7 is the structural schematic diagram of the third embodiment of the utility model crankcase；
Fig. 8 is the positive structure schematic relative to Fig. 7；
Fig. 9 is the structural schematic diagram of the 4th kind of embodiment of the utility model crankcase；
Figure 10 is the positive structure schematic relative to Fig. 9.
Specific embodiment
As shown in Figure 3 and Figure 4, crankshaft for refrigeration compressor case includes cylinder head 11, cylinder face 2, cylinder-bore 4, screw hole
1, gas vent 3 and groove 5, cylinder head 11 are the geometry of rule, such as rectangle, trapezoidal.Cylinder face 2 is set to cylinder head 11
Front end, cylinder face 2 are a flat surface, and cylinder-bore 4, screw hole 1, gas vent 3 are set on cylinder face 2.Groove 5 is set to cylinder face 2
It goes up and is distributed in around cylinder-bore 4, between cylinder-bore 4 and screw hole 1, gas vent 3, groove 5 and cylinder-bore 4, exhaust
Hole 3, screw hole 1 are not attached to lead to, and the shortest distance between the edge and cylinder-bore 4 of groove 5, gas vent 5, screw hole 1 is respectively 2
~8mm, the width of groove 5 are 1~6mm, are 1~10mm lower than cylinder face depth (i.e. depth of groove).Groove 5 includes top
Three straight troughs 51,52,53, the straight trough 55 of the annular groove 54 at middle part and lower part, straight trough 51,52,53,55 connect with annular groove 54 respectively
Logical, the straight trough 51,52,53 on top is connected into the annular groove 54 at middle part from the intermediate and left and right sides respectively.The straight trough quantity on top and
The straight trough quantity of lower part, which can according to need, to be increased and decreased, such as 1~3.When compressor operating, straight trough of the refrigeration oil from top
51,52,53 flow downwardly into, further along middle part annular groove 54 to flow down, finally from the straight trough 55 of lower part flow out crankcase.Freezing
The oil circuit of oil is that continuously, the heat that stomata head generates can continually be taken away by heat exchange during the motion.
Although four Thursday screw holes 1 can cause cylinder entirety torsional deflection, pass through groove in drivescrew and when having certain torque
5 separate this key area of cylinder face head with surrounding, and cylinder axis will form a rotary table 6, torque would not directly into
Row transmitting, therefore deformation can be effectively reduced.
As shown in Figure 5 and Figure 6, shown in Fig. 3 compared with structure, groove 5 further includes the skewed slot 56 for having on both sides of the middle, and two tiltedly
Slot 56 is connected with annular groove 54, will can further increase the influx of refrigeration oil.
As shown in Figure 7 and Figure 8, according to the matching feature of different refrigerators, in some special circumstances, such as system oil is recycled
When more demanding (minimum flow of control refrigeration oil), if refrigeration oil, which flows into groove 5, will cause the oil mass of system circulation not
Foot, shows the straight trough for setting top in groove 5 at this time, eliminates the inflow of refrigeration oil, but a straight trough 55 is still arranged for leaking in lower part
Oil.The structure in heat exchange only with the heat exchange of internal gas and cylinder, though effect is not so good as Fig. 3, embodiment party shown in fig. 5
Formula, but can be applied to some special types.Meanwhile by rotary table 6, equivalent effect is still played in terms of resistance to deformation.
As shown in Figure 9 and Figure 10, cylinder head 11 is that cross is petal (can also use other polymorphic structures), at the top of
Recess 9 is arc structure, on cylinder face 2, the periphery of cylinder-bore 4 be equipped with toroidal cavity 54, rotary table 6 is formed on cylinder face 2.
The structure can take into account cylinder facial plane degree, cylinder heat dissipation and cylinder deformation to greatest extent.When implementing, needs to design and match therewith
The air valve structure of set is applied in existing matured product.In addition to crankcase itself, matched components will also make design and change
Into relatively complicated.Relatively effective application is the product in design newly developed, is just designed in early production sizing
Using preferable effect can be obtained.
In the utility model crankcase structure, the processing technology of groove 5 can use casting technique moulding by casting, can also
To carry out following process with machining apparatus.
Claims (8)
1. a kind of crankshaft for refrigeration compressor case, including cylinder head, cylinder face, cylinder-bore, screw hole and gas vent, the cylinder
Face is set to the front end of cylinder head, and the cylinder face is a flat surface, and the cylinder-bore, screw hole, gas vent are set to the cylinder
On face；It is characterized in that, it further includes groove, the groove is set on the cylinder face and is distributed in around the cylinder-bore,
The groove is not attached to lead to the cylinder-bore, gas vent, screw hole, the edge of the groove and the cylinder-bore, gas vent,
The shortest distance between screw hole is respectively 2~8mm.
2. a kind of crankshaft for refrigeration compressor case as described in claim 1, which is characterized in that the groove is distributed in the gas
Between cylinder holes and the screw hole and gas vent, the width of the groove is 1~6mm, and the depth of the groove is 1~10mm.
3. a kind of crankshaft for refrigeration compressor case as claimed in claim 1 or 2, which is characterized in that the groove includes top
Straight trough, the annular groove at middle part and the straight trough of lower part, the straight trough is connected to the annular groove respectively.
4. a kind of crankshaft for refrigeration compressor case as claimed in claim 3, which is characterized in that the straight trough on the top has three
Item is connected into the annular groove at the middle part from the intermediate and left and right sides respectively.
5. a kind of crankshaft for refrigeration compressor case as claimed in claim 3, which is characterized in that the groove further includes having middle part
The skewed slot of two sides, the skewed slot are connected with the annular groove.
6. a kind of crankshaft for refrigeration compressor case as claimed in claim 1 or 2, which is characterized in that the groove includes middle part
Annular groove and lower part straight trough, the straight trough is connected to the annular groove.
7. a kind of crankshaft for refrigeration compressor case as claimed in claim 1 or 2, which is characterized in that the cylinder head is cross
It is petal.
8. a kind of crankshaft for refrigeration compressor case as claimed in claim 1 or 2, which is characterized in that the groove is using casting
Technique moulding by casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821755397.5U CN209308922U (en) | 2018-10-26 | 2018-10-26 | A kind of crankshaft for refrigeration compressor case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821755397.5U CN209308922U (en) | 2018-10-26 | 2018-10-26 | A kind of crankshaft for refrigeration compressor case |
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| Publication Number | Publication Date |
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| CN209308922U true CN209308922U (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821755397.5U Active CN209308922U (en) | 2018-10-26 | 2018-10-26 | A kind of crankshaft for refrigeration compressor case |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356825A (en) * | 2018-10-26 | 2019-02-19 | 加西贝拉压缩机有限公司 | A kind of crankshaft for refrigeration compressor case |
-
2018
- 2018-10-26 CN CN201821755397.5U patent/CN209308922U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356825A (en) * | 2018-10-26 | 2019-02-19 | 加西贝拉压缩机有限公司 | A kind of crankshaft for refrigeration compressor case |
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