CN202203078U - Piston type refrigeration compressor - Google Patents
Piston type refrigeration compressor Download PDFInfo
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- CN202203078U CN202203078U CN2011203017862U CN201120301786U CN202203078U CN 202203078 U CN202203078 U CN 202203078U CN 2011203017862 U CN2011203017862 U CN 2011203017862U CN 201120301786 U CN201120301786 U CN 201120301786U CN 202203078 U CN202203078 U CN 202203078U
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- piston
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Abstract
The utility model discloses a piston type refrigeration compressor, comprising a crank shaft (1), a connecting rod (2), a piston (4) and a cylinder seat (5), wherein wearable sprayed coatings (6) made of a wearable high temperature resistant material are arranged on the inner wall of the cylinder hole of the cylinder seat (5) and on the surface of the piston (4) which is matched with the cylinder hole of the cylinder seat (5); and the main body of the cylinder seat (5) and the piston (4) both are made of aluminum alloy. With the technical proposal, the novel structures such as the aluminum cylinder seat and the aluminum piston both spry-coated with Teflon material and the like are employed, so that the coefficient of gas transmission is improved, while the friction is reduced and the refrigerating output and COP are increased; the weight of the compressor is obviously reduced; the noise and vibration of the compressor are reduced; and the saving of the energy sources and the raw materials and the reduction of noises are realized.
Description
Technical field
The utility model belongs to the technical field of refrigeration compressor, and specifically, the utility model relates to a kind of Piston Refrigerant Compreessor.
Background technique
At present; The technology that in the freezer compressor industry, generally adopts is: compressor is through the motor rotating band dynamic pressure machine crankshaft rotation of contracting; Crankshaft eccentric rotatablely moves and is converted into moving back and forth of connecting rod small end, and connecting rod drives piston, and piston is reciprocating in cylinder block cylinder hole.
To shown in Figure 5, is the schematic representation of the refrigeration compressor of existing technology like Fig. 1.Wherein, Fig. 1 is the profile schematic representation; Fig. 2 is the sectional view of compresser cylinder seat 5; Fig. 3, Fig. 4 are the schematic representation of traditional piston 4, and Fig. 5 is a cylinder block 5 and the erection drawing of piston 4, connecting rod 2, bent axle 1 etc.
Because the friction of piston and cylinder block is serious in the prior art, under high temperature condition, makes contact surface impaired easily, influences sealability and quality of fit.For avoiding contact surface impaired, the measure of taking can only be to increase matching gap in the existing technology, still, and consequently to the sealability deleterious impact.
In the prior art, the material of cylinder block 5 makes cylinder iron, and what piston 4 adopted is ferrous based powder metallurgical or ironcasting, and piston 4 all adopts irony with cylinder block 5, and the density of iron is big, and quality is big.And cylinder block, piston all belong to the compressor major part, and quality is big, increase compressor complete machine weight;
Simultaneously, because iron intensity is high, hardness is big, for reaching part processing precision, equipment and processing technology is proposed requirements at the higher level;
Particularly serious is: the irony piston mass is big, and reciprocal inertia force is big, causes hull vibration by the unbalanced force excitation, causes compressor noise to increase.In the reciprocating-piston type refrigerating compressor that with the irony is the master, all rotating inertia forces can complete equilibrium fall, and the single order reciprocal inertia force can only balance 1/3～1/2.
The model utility content
The problem that the utility model solves provides a kind of Piston Refrigerant Compreessor, its objective is the friction that alleviates compressor weight, reduces piston and cylinder block, the Energy Efficiency Ratio that reduces vibration, raising compressor.
To achieve these goals, the technological scheme taked of the utility model is:
The Piston Refrigerant Compreessor that the utility model provided comprises bent axle, connecting rod, piston and cylinder block, on the cylinder-bore inwall of described cylinder block, is provided with by the wear-resisting sprayfused coating wear-resisting, that exotic material is processed;
Perhaps on the surface that cooperates with the cylinder-bore of described cylinder block on the described piston, be provided with by the wear-resisting sprayfused coating wear-resisting, that exotic material is processed;
Perhaps on the cylinder-bore inwall of described cylinder block, on the surface that cooperates with the cylinder-bore of described cylinder block on the described piston, be equipped with by the wear-resisting sprayfused coating wear-resisting, that exotic material is processed.
The material of described wear-resisting sprayfused coating is a teflon.
The thickness of described wear-resisting sprayfused coating is 0.001～0.010mm.
The axial length of the sealed end of described piston is 10 ± 0.15mm.
The bulk material of described cylinder block is an aluminum alloy.Perhaps the bulk material of described cylinder block is other lightweight metal material.
The material of described piston is an aluminum alloy.Perhaps the material of described piston is other lightweight metal material.
The utility model adopts technique scheme, on cylinder block, sprays high temperature resistance, splendid teflon (Teflon) material of wear-resisting property, and the reciprocating friction power of piston and cylinder-bore, compressor mechanical friction noise further reduce; Because antiwear property improves, friction factor reduces, and can further reduce the matching gap of aluminum piston and cylinder-bore; When matching gap reduced, about the axial length increase 4mm with the piston seal end, the leakage of compressor further reduced; Greatly improve compressor gas transmission coefficient, improve compressor refrigerating capacity, frictional behaviour is improved; Reduced compressor power input, complete machine COP is obviously promoted; Cylinder block and piston change aluminum material into, 2.8 times of weight savings, and cylinder block processibility and machining accuracy obviously improve; The uneven excitation force of piston also reduces 2.8 times, reduces the excitation noise of excitation force to housing and housing seal inner chamber refrigeration agent greatly; Because of uneven excitation force reduces to reduce with frictional noise, the noise and vibration of compressor is obviously descended, really accomplish energy saving and raw material, reduce noise.
Description of drawings
The mark of facing down among expressed content of each width of cloth accompanying drawing of this specification and the figure is made brief description:
Fig. 1 is a cast iron cylinder block form structure schematic representation of the prior art;
Fig. 2 is the B-B cross-sectional schematic of structure shown in Figure 1;
Fig. 3 is the piston structure schematic representation of powder metallurgy irony of the prior art;
Fig. 4 is the A-A cross-sectional schematic of structure shown in Figure 3;
Fig. 5 is a cast iron cylinder block reciprocating compressor structural representation of the prior art;
Fig. 6 is the structural representation of the aluminium matter cylinder block that is coated with the Teflon material in the utility model;
Fig. 7 is the C-C cross-sectional schematic among Fig. 6;
Fig. 8 is the structural representation of the aluminum piston in the utility model;
Fig. 9 is the A-A cross-sectional schematic among Fig. 8;
Figure 10 be the utility model coating aluminium matter cylinder block and the compressor arrangement schematic representation of aluminum piston of Teflon material.
Be labeled as among the figure:
1, bent axle, 2, connecting rod, 3, wrist pin, 4, piston, 5, cylinder block, 6, wear-resisting sprayfused coating.
Embodiment
Contrast accompanying drawing below,, the embodiment of the utility model is done further detailed explanation, inventive concept, the technological scheme of the utility model are had more complete, accurate and deep understanding to help those skilled in the art through description to embodiment.
Like the structure of the expressed the utility model of Fig. 6, Fig. 7 and Figure 10, be a kind of refrigeration compressor in the form of piston, comprise bent axle 1, connecting rod 2, wrist pin 3, piston 4 and cylinder block 5.
In order to overcome the defective that existing technology exists, realize friction, the reduction vibration that alleviates compressor weight, reduces piston and cylinder block, the goal of the invention that improves the Energy Efficiency Ratio of compressor, the technological scheme that the utility model is taked is:
Like Fig. 7 and shown in Figure 10, the Piston Refrigerant Compreessor that the utility model provided is provided with on the cylinder-bore inwall of described cylinder block 5 by the wear-resisting sprayfused coating 6 wear-resisting, that exotic material is processed;
Perhaps on the surface that cooperates with the cylinder-bore of described cylinder block 5 on the described piston 4, be provided with by the wear-resisting sprayfused coating 6 wear-resisting, that exotic material is processed;
Perhaps on the cylinder-bore inwall of described cylinder block 5, on the surface that cooperates with the cylinder-bore of described cylinder block 5 on the described piston 4, be equipped with by the wear-resisting sprayfused coating 6 wear-resisting, that exotic material is processed.
The material of described wear-resisting sprayfused coating 6 is a teflon.
In order to reduce surface friction drag and to improve the gas transmission coefficient; On the inwall of the cylinder-bore of aluminum cylinder block 5; Perhaps on the surface that cooperates with the cylinder-bore of described cylinder block 5 on the described piston 4; Spray a kind of high temperature resistance, the splendid teflon of wear-resisting property is filmed---the Teflon high-abrasive material, perhaps all spray described high temperature resistance on the cylinder-bore inwall of described cylinder block 5, on the surface that cooperates with the cylinder-bore of described cylinder block 5 on the described piston 4, the splendid teflon of wear-resisting property is filmed---the Teflon high-abrasive material.
Simultaneously can combine concrete technological requirement, cylinder block, piston face are coated needed spray wear resistant coating thickness.
Under high capacity, the Teflon material has good wear-resisting property, and very low friction factor is all arranged when the Teflon high-abrasive material contacts with most materials simultaneously, and its outstanding sliding capability is by approval widely; On the other hand; The spraying Teflon film has extremely strong high temperature resistant and fire performance; This is that the operating temperature of teflon coatings is the highest can to reach 300 ℃ because the Teflon material has very high fusing point and self-ignition point, the operating temperature of discontinuity even can reach 320 ℃.Between 250 ℃～280 ℃, can use continuously, its significant thermostability is adapted to compressor fully and under various back pressures, works.Piston 4 further reduces with the reciprocating friction power of cylinder-bore, and the mechanical friction noise of compressor also further reduces.Because antiwear property improves and friction factor diminishes, and can further reduce the matching gap of aluminum piston and cylinder-bore.
Specifically, in the scope of coating processes, the optimal values of the thickness of described wear-resisting sprayfused coating 6 is 0.001～0.010mm.
(combination Fig. 3) as shown in Figure 8, the axial length of the sealed end of the described piston 4 of the utility model is 10 ± 0.15mm.
In the existing technology, the length of piston seal end is about 6mm.When matching gap reduces, can adjust piston seal end length, piston seal end length is increased about 4mm, the leakage of compressor further reduces, and greatly improves compressor gas transmission coefficient.
As shown in Figure 7, the bulk material of the described cylinder block 5 of the utility model is an aluminum alloy.As shown in Figure 9, the material of the described piston 4 of the utility model is an aluminum alloy.
The utility model produces noise and vibration in order to reduce uneven excitation force to the stimulation of housing, change cylinder block 5 into aluminum material after, 2.8 times of weight savings, the processibility and the machining accuracy of cylinder block 5 obviously improve; Simultaneously, because piston 4 also changes aluminum material into, uneven excitation force also reduces 2.8 times, reduces the excitation noise of excitation force to housing and housing seal inner chamber refrigeration agent greatly,
Adopt aluminum material cylinder block 5 and piston 4, and add the spraying teflon coatings, alleviated compressor weight,, improve compressor refrigerating capacity, improve because of frictional behaviour and reduced compressor power input, complete machine Energy Efficiency Ratio (COP) is obviously promoted because of the gas transmission coefficient increases; Because of uneven excitation force reduces to reduce with frictional noise, the noise and vibration of compressor is obviously descended.Change cylinder of compressor seat 5 into aluminium matter, because the processibility of aluminium is better than iron, the machining accuracy of cylinder block 5 improves, and satisfies processing request easily, and reject rate is significantly descended, thereby cost reduces.
The bulk material of the described cylinder block of the utility model also can be other lightweight metal material.Equally, the material of the described piston of the utility model also can be other lightweight metal material.
The utility model compared with prior art has following advantage:
Compressor complete machine weight reduces, obviously economical with materials;
Can improve the gas transmission coefficient of compressor, under the situation of unit volume that does not improve compressor and motor revolution, improve compressor refrigerating capacity greatly and reduce input power, reach and significantly improve compressor COP value purpose;
The uneven to-and-fro motion power that compressor is in operation and produces be can reduce effectively, compressor noise, vibration reduced.
Be concrete analysis below to the structure and the manufacturing process of the utility model:
The related process of the utility model is:
After cylinder block 5 honings,, on the inwall of the cylinder hole of cylinder block 5, spray the wear-resisting sprayfused coating 6 of the Teflon material of 1～10 micron of a kind of thickness through a kind of special process.
After the compressor energising, 1 rotation of driven by motor bent axle, bent axle 1 minor axis connects connecting rod 2, and connecting rod 2 drives pistons 4 and in cylinder block 5, moves back and forth, and realizes air-breathing, compression, exhaust, the expansion of compressor.
Principle analysis to the utility model is following:
Because wear resistance and extremely low friction factor that special fluorine coating cylinder-bore is high; Cylinder-bore and piston matching gap are further dwindled; Add the increase of piston seal end length; With pressure lubrication is that main compressor arrives cylinder-bore and piston matching gap through centrifugal lubrication with oil pump, realizes the sealing of piston and cylinder hole refrigerator oil, and sealability improves.
Described gas transmission coefficient is:
λ＝λ
vλ
pλ
Tλ
l
Wherein, λ
v, λ
p, λ
T, λ
lBe respectively the coefficient relevant with volume, pressure, temperature and leakage.
The compressor leakage coefficient lambda
1Increase, the gas transmission coefficient lambda increases, compressor refrigerating capacity Q
0Increase; Simultaneously, because wear resistance increases, friction factor diminishes, and frictional work Pm reduces, and input power Pe reduces, compressor COP=refrigerating capacity/input power, so COP increases.
In addition, the quality of the piston 4 of aluminium matter alleviates 2.8 times, and reciprocal inertia force reduces greatly.Be that all rotating inertia forces can complete equilibrium fall in the main reciprocating-piston type refrigerating compressor with the irony, and the monovalence reciprocal inertia force can only balance 1/3～1/2; And be the piston of matrix with aluminium matter, except whole rotating inertia forces can balance, reciprocal inertia force is for former irony piston, because reciprocation mass m
pSignificantly reduce the reciprocation mass m that connecting rod small end transforms
ClOnly account for the connecting rod quality sub-fraction, so reciprocation mass m
jReduce (m greatly
j=m
p+ m
Cl), uneven reciprocal inertia force F
jReduce greatly, the monovalence reciprocal inertia force can balance more than 1/2, and the balancing patch quality and the radius that need on bent axle, carry out counterweight also reduce, and have practiced thrift materials consumption; Reduce the vibration that unbalanced force produces; And the root that noise produces is the vibration of housing, and makes the vibrative a big chunk of housing come from unbalanced excitation force.Uneven excitation force vibration source reduces, and noise reduces, and reaches the low noise effect.
Show through above principle analysis: the utility model has significantly alleviated the weight of compressor; Employing is coated with new structures such as aluminium matter cylinder block and the aluminum piston of Teflon material, can improve the gas transmission coefficient, reduces friction, improves refrigerating capacity and COP, has reduced compressor noise and vibration, really accomplishes energy saving and raw material, reduction noise.
Combine accompanying drawing that the utility model has been carried out exemplary description above; Obviously the concrete realization of the utility model does not receive the restriction of aforesaid way; As long as adopted the method design of the utility model and the improvement of the various unsubstantialities that technological scheme is carried out; Or the design of the utility model and technological scheme are directly applied to other occasion without improving, all within the protection domain of the utility model.
Claims (6)
1. a Piston Refrigerant Compreessor comprises bent axle (1), connecting rod (2), piston (4) and cylinder block (5), it is characterized in that:
On the cylinder-bore inwall of described cylinder block (5), be provided with by the wear-resisting sprayfused coating (6) wear-resisting, that exotic material is processed;
Perhaps on the surface that described piston (4) is gone up with the cylinder-bore of described cylinder block (5) cooperates, be provided with by the wear-resisting sprayfused coating (6) wear-resisting, that exotic material is processed;
Perhaps on the cylinder-bore inwall of described cylinder block (5), on the surface that described piston (4) is gone up with the cylinder-bore of described cylinder block (5) cooperates, be equipped with by the wear-resisting sprayfused coating (6) wear-resisting, that exotic material is processed.
2. according to the described Piston Refrigerant Compreessor of claim 1, it is characterized in that: the material of described wear-resisting sprayfused coating (6) is a teflon.
3. according to the described Piston Refrigerant Compreessor of claim 2, it is characterized in that: the thickness of described wear-resisting sprayfused coating (6) is 0.001～0.010mm.
4. according to claim 1 or 2 or 3 described Piston Refrigerant Compreessors, it is characterized in that: the axial length of the sealed end of described piston (4) is 10 ± 0.15mm.
5. according to claim 1 or 2 or 3 described Piston Refrigerant Compreessors, it is characterized in that: the bulk material of described cylinder block (5) is an aluminum alloy.
6. according to claim 1 or 2 or 3 described Piston Refrigerant Compreessors, it is characterized in that: the material of described piston (4) is an aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203017862U CN202203078U (en) | 2011-08-18 | 2011-08-18 | Piston type refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203017862U CN202203078U (en) | 2011-08-18 | 2011-08-18 | Piston type refrigeration compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202203078U true CN202203078U (en) | 2012-04-25 |
Family
ID=45967200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203017862U Expired - Lifetime CN202203078U (en) | 2011-08-18 | 2011-08-18 | Piston type refrigeration compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202203078U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269149A (en) * | 2011-08-18 | 2011-12-07 | 芜湖欧宝机电有限公司 | Piston refrigerant compressor |
-
2011
- 2011-08-18 CN CN2011203017862U patent/CN202203078U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269149A (en) * | 2011-08-18 | 2011-12-07 | 芜湖欧宝机电有限公司 | Piston refrigerant compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120425 |