CN202768343U - Suction valve reed for reciprocating piston type compression engine - Google Patents
Suction valve reed for reciprocating piston type compression engine Download PDFInfo
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- CN202768343U CN202768343U CN201220438745.2U CN201220438745U CN202768343U CN 202768343 U CN202768343 U CN 202768343U CN 201220438745 U CN201220438745 U CN 201220438745U CN 202768343 U CN202768343 U CN 202768343U
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- suction valve
- exhaust port
- valve block
- tongue
- stamping
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Abstract
The utility model discloses a suction valve reed for a reciprocating piston type compression engine. The suction valve reed for the reciprocating piston type compression engine is used for a whole sealing reciprocating piston type refrigeration compressor and is provided with a valve reed body (1), a suction valve reed (2) and an exhaust vent (4). The gap between the suction valve reed (2) and the valve reed body (1) is no more than 0.4 millimeter and the radius of the exhaust vent (4) is R3. By adopting the suction valve reed for the reciprocating piston type compression engine, relative clearance volume decreases, volumetric coefficient lambada<V> and pressure coefficient lambada<P> increase, gas transmission coefficient of the compression engine is improved. Edge of the suction valve reed with small gap is away from a valve mouth and stainless steel 7C27MO2 valve reed is used, and therefore abilities of resistance to fatigue and damage and reliability of the valve reed is improved.
Description
Technical field
The utility model belongs to the technical field of refrigeration compressor, relates to the structure of reciprocating-piston type refrigerating compressor, and more particularly, the utility model relates to a kind of suction valve chip of Reciprocting piston compressor.
Background technique
In existing reciprocating piston type freezer compressor, the compressor high efficiency technical is being pursued always by a lot of refrigerator enterprises.In order to reach the higher COP(Energy Efficiency Ratio of compressor), prior art generally adopts high efficiency motor, small axle diameter bent axle, low viscous refrigerator oil, and rolling bearing replaces the technology such as sliding bearing.
Technique scheme, major part is to take measures from reducing the compressor power consumption, shortage is from improving gas transmission coefficient angle, such as the technological scheme on suction valve chip gap width, thickness, material, particularly lacks and reduces the technological scheme that the suction valve chip gap width reduces clearance volume etc.
In the prior art, because the narrow limitation of valve block stamping-out preparation process, the suction valve chip that some high-efficient compressors adopt and the slit δ of tongue are generally more than 0.5mm.
In piston compressor, when piston runs to outer dead point, volume between piston-top surface and valve plate bottom surface and formed clearance volume with air valve passage that cylinder communicates always, and the latter's ratio is because the existence of clearance volume, total some gas has been occupied the exhaust passage and can't have been discharged, so that clearance c is larger relatively, causes volumetric coefficient λ v less, thereby the gas transmission coefficient is less, is difficult to further improve the COP of compressor.
The model utility content
The utility model provides the suction valve chip technological scheme of Reciprocting piston compressor, its objective is to improve suction valve chip gas transmission coefficient, improves the reliability of COP and compressor efficiency, raising suction valve chip.
To achieve these goals, the technological scheme taked of the utility model is:
The suction valve chip of a kind of Reciprocting piston compressor that the utility model provides is used for totally-enclosed reciprocating-piston type refrigerating compressor, is provided with valve block body, Aspirating valves tongue and exhaust port, the gap≤0.4mm between described Aspirating valves tongue and the valve block body; The radius of described exhaust port is R3;
The vertical of described Aspirating valves tongue is the stamping-out direction, and described stamping-out direction is consistent with the grain direction of described valve block body;
The vertical of described Aspirating valves tongue is the stamping-out direction, and the angle of the grain direction of described stamping-out direction and described valve block body is 5 °～20 °;
The material of above-described suction valve chip is carbon steel band Sandvik20C;
Perhaps, the material of above-described suction valve chip is Spring Steel Band 7C27Mo2.
The utility model also provides a kind of suction valve chip of Reciprocting piston compressor, be used for totally-enclosed reciprocating-piston type refrigerating compressor, be provided with the valve block body, described valve block body is provided with the air-breathing tongue of exhaust port, be provided with the exhaust port reed at the air-breathing tongue of described exhaust port, be provided with exhaust port at described exhaust port reed; The end of the air-breathing tongue of described exhaust port is the approximate ellipsoidal of a major axis and its stamping-out perpendicular direction; The vertical of the air-breathing tongue of described exhaust port and exhaust port reed is the stamping-out direction, and the air-breathing tongue of described exhaust port is consistent with the stamping-out direction of described exhaust port reed; The air-breathing tongue of described exhaust port and valve block body and between gap≤0.4mm;
The stamping-out direction of the air-breathing tongue of described exhaust port and exhaust port reed is consistent with the grain direction of described valve block body;
The material of above-described suction valve chip is carbon steel band Sandvik20C;
Perhaps, the material of above-described suction valve chip is Spring Steel Band 7C27Mo2.
In order to realize the goal of the invention identical with technique scheme, the utility model also provides the manufacture method of the suction valve chip of above-described Reciprocting piston compressor, and its technological scheme is:
Behind described suction valve chip stamping-out, described suction valve chip is carried out roll cast, for guaranteeing that abrasive material in the roll cast process can enter the gap between tongue and the valve block body, the boundary dimension of roll cast abrasive material is less than this gap, the abrasive material profile is smooth profile, do not have corner angle, the roll cast time is 4～5 hours, after the roll cast to described suction valve chip demagnetize, encapsulation process.
The utility model adopts technique scheme, relative clearance volume reduces, volumetric coefficient λ v increases, pressure coefficient λ p increases, improve compressor gas transmission coefficient, small gap suction valve chip edge is far away apart from valve port, and stainless steel 7C27Mo2 valve block uses, improve valve block and resist the ability of fatigue ruption, improve the valve block reliability.
Description of drawings
The below is briefly described the expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure:
Fig. 1 is embodiment's one of the present utility model structural representation;
Fig. 2 is embodiment's two of the present utility model structural representation;
Fig. 3 is embodiment's four of the present utility model structural representation.
Be labeled as among the figure:
1, valve block body, 2, the Aspirating valves tongue, 3, the exhaust port reed, 4, exhaust port, 5, the air-breathing tongue of exhaust port.
Embodiment
The below contrasts accompanying drawing, by the description to embodiment, embodiment of the present utility model is described in further detail, and to help those skilled in the art inventive concept of the present utility model, technological scheme is had more complete, accurate and deep understanding.
Embodiment one:
Structure of the present utility model as shown in Figure 1 is a kind of suction valve chip of Reciprocting piston compressor, is used for totally-enclosed reciprocating-piston type refrigerating compressor, is provided with valve block body 1, Aspirating valves tongue 2 and exhaust port 4.
In order to solve the problem that prior art exists and to overcome its defective, realize improving suction valve chip gas transmission coefficient, improve the goal of the invention of the reliability of COP and compressor efficiency, raising suction valve chip, the technological scheme that the utility model is taked is:
The suction valve chip of Reciprocting piston compressor of the present utility model, the gap delta≤0.4mm between described Aspirating valves tongue 2 and the valve block body 1; The radius of described exhaust port 4 is R3.
The vertical of described Aspirating valves tongue 2 is the stamping-out direction, and described stamping-out direction is consistent with the grain direction of described valve block body 1, and namely its angle is 0 °.
The material of above-described suction valve chip is carbon steel band Sandvik20C.
Small gap suction valve chip of the present utility model, the tongue direction of valve block and the grain direction of valve block are in full accord; Because the clearance volume that gap delta forms between Aspirating valves tongue 2 and the valve block body 1 can't be discharged, therefore prior art intermediate gap amount is dwindled, become the above-mentioned gap width in the utility model, the tongue position gap delta≤0.4mm of suction valve chip, even gap delta can be contracted to 0.1mm or also less than 0.1mm, even less.
Simultaneously exhaust port R3.5 is adjusted into R3.
Because the gap of valve block is less, the relative clearance volume c of valve block is less, and volumetric coefficient λ v, pressure coefficient λ p increase, and the gas transmission coefficient lambda increases, and refrigerating capacity Q0 increases.
Because volumetric coefficient λ v, pressure coefficient λ p increase, thus the increase of gas transmission coefficient, small gap suction valve chip edge is far away apart from impact and crooked valve port, and the resisting fatigue damage capability strengthens.
Simultaneously, because the tongue position is fully consistent with the grain direction of valve block, in the stamping-out process, it is little that the tearing port stamping-out is torn distortion, and the larger reduction of fine crack possibility that produces from here improves the ability that valve block is resisted fatigue ruption, improves the valve block reliability.The tongue position of valve block fully with the valve block that grain direction is consistent and the gap reduces of valve block, improved reliability and the compressor gas transmission coefficient of valve block.
In order to process small gap Sandvik 20C carbon steel valve block, die is formed clearance distance, and to narrow down to the valve block gap consistent, adjust simultaneously the die-cut width of cutting edge part of punch, for tipping appears in the cutting edge of avoiding punch, die material is adjusted into hardness high and certain toughness die steel is arranged, such as the high-speed alloy steel; Simultaneously, behind the valve block stamping-out, because existing, cutting tears distortion, need valve block is carried out roll cast, for guaranteeing that abrasive material can enter the gap in the roll cast process, need roll cast abrasive material size is adjusted, with the abrasive material size reduction to original volume half in addition 2/3, and the abrasive material cylindrical must not have corner angle, with roll cast time lengthening to 4～5 hour, after the roll cast to valve block demagnetize, the processing such as encapsulation.
Embodiment two:
As shown in Figure 2, the stamping-out direction among the embodiment one is changed, consist of the present embodiment: namely the angle of the grain direction of described stamping-out direction and described valve block body 1 is 5 °～20 °.All the other technological schemes are identical with embodiment one.
Above-mentioned small gap suction valve chip of the present utility model, its material are Sandvik 20C carbon steel, and the stamping-out direction of its tongue position and valve block is 5 °～20 ° angles.Identical with embodiment one is: the suction valve chip gap width by 0.4～0.5mm of the prior art, is reduced into 0.1mm～0.2mm, and also less than 0.1mm even, simultaneously the exhaust port 4 on the suction valve chip is adjusted into R3 by original R3.5.
Pass through design improvement, relative clearance volume c=0.045 is reduced to c=0.03, volumetric coefficient λ v increases, pressure coefficient λ p reduces to increase with volumetric coefficient λ v because of relative clearance volume c, and gas transmission coefficient lambda=λ v λ p λ T λ l is under GB specified standard operating mode, because λ v and λ p increase simultaneously, the gas transmission coefficient lambda increases, actual mass displacement Ga increases, and the refrigerating capacity Q0 of compressor increases, and reaches to improve compressor COP value purpose.
Simultaneously, because the valve block gap location is the stamping-out position of mould, there is one to tear process at the stamping-out place, if the valve block roll cast is bad, easily produce fine crack in the tear place, in valve block impact and crooked situation, expand the generation fatigue ruption from valve block edge fine crack, and small gap suction valve chip edge is far away apart from valve port, improve the ability that the valve block antifatigue is destroyed, improve the reliability of valve block.
In embodiment one and embodiment two, the suction valve chip of the small gap of two kinds of different stamping-out directions has all been realized improving the gas transmission coefficient and improving the ability that valve block is resisted fatigue ruption.
Embodiment three:
Carbon steel band Sandvik20C among embodiment one or the embodiment two is replaced,, consist of the present embodiment, namely the material of above-described suction valve chip changes Spring Steel Band 7C27Mo2 into.Identical among all the other technological schemes and embodiment one or the embodiment two.
Martensitic Stain Less Steel 7C27Mo2 has high fatigue strength under crooked and impact stress, surface compress residual stresses is high.This has determined valve block after stamping-out and roll cast, and the tensile stress at stamping-out edge has been become pressure stress, has greatly strengthened the straightness of fatigue strength and the valve block of valve block; After the fatigue strength of valve block and the straightness of valve block increased, lift of valve plate can increase, and the windage loss of valve block reduces, and compressor efficiency improves, and compressor gas transmission coefficient improves, the Reliability Enhancement of valve block.
In order to process above-mentioned small gap stainless steel 7C27Mo2 valve block, except dwindling punch, die gap, die material is adjusted into cold-work die steel Cr12MoV, and this mould just can bear very large pressure, strong friction and impact and have high hardness, high wear resistance and have certain toughness.
Exist owing to the cutting fracture collapses to become, need carry out roll cast to valve block, the requirement that throwing is rolled is identical with embodiment one.
Embodiment four:
The utility model also provides a kind of suction valve chip of Reciprocting piston compressor, is used for totally-enclosed reciprocating-piston type refrigerating compressor:
As shown in Figure 3, suction valve chip is provided with valve block body 1, and described valve block body 1 is provided with the air-breathing tongue 5 of exhaust port, is provided with exhaust port reed 3 at the air-breathing tongue 5 of described exhaust port, is provided with exhaust port 4 at described exhaust port reed 3; The end of the air-breathing tongue 5 of described exhaust port is the approximate ellipsoidal of a major axis and its stamping-out perpendicular direction; The vertical of the air-breathing tongue 5 of described exhaust port and exhaust port reed 3 is the stamping-out direction, and the air-breathing tongue 5 of described exhaust port is consistent with the stamping-out direction of described exhaust port reed 3; The air-breathing tongue 5 of described exhaust port and valve block body 1 and between gap delta≤0.4mm.
The stamping-out direction of the air-breathing tongue 5 of described exhaust port and exhaust port reed 3 is consistent with the grain direction of described valve block body 1.
The material of above-described suction valve chip is carbon steel band Sandvik20C.
The clearance volume that gap delta forms that forms between the air-breathing tongue 5 of exhaust port and the valve block body 1 can't be discharged, the grain direction 5 of suction valve chip tongue stamping-out direction and valve block body 1 is consistent, simultaneously air-breathing tongue area is increased, be made into an oval tongue mouth, open in addition a ligulate groove on the air-breathing tongue 5 of exhaust port, namely the exhaust port reed 3; Opening a diameter on the exhaust port reed 3 is the exhaust port 4 of φ 4.
Because air-breathing tongue 5 areas of exhaust port reduce nearly 1/3, again because exhaust port reed 3 does not participate in air-breathing, gas is pushed the suction valve chip resistance force diminishes open, the ratio that the loss that the air valve resistance causes accounts for indicated work is just little, the simultaneously timely open and close of suction valve chip, the proper motion of valve block makes air valve have sufficient time cross-section, and the velocity ratio of gas flow when the valve clearance passage is lower, flow resistance is corresponding reducing also, and compressor displacement and efficient can be improved.
In addition, owing to tongue position gap delta is≤0.4mm, perhaps be controlled at 0.1mm, in addition less than 0.1mm, and clearance volume further reduces; Grain direction and stamping-out direction are consistent, it is little that stamping-out process tearing port stamping-out is torn distortion, the larger reduction of fine crack possibility that produces from here, improve valve block and resist the ability of fatigue ruption, exhaust port reed 3 does not participate in breathing process, the proper motion of valve block makes the air-breathing tongue 5 of exhaust port have sufficient time cross-section, and flow resistance reduces, and compressor displacement and efficient can be improved.
Embodiment five:
The material of suction valve chip among the embodiment four is replaced, consisted of the present embodiment, namely the material of the suction valve chip described in the embodiment four changes Spring Steel Band 7C27Mo2 into.All the other technological schemes are identical with embodiment four.
Adopt Martensitic Stain Less Steel 7C27Mo2 suction valve chip, because the adjustment of valve block body 1, and the good mechanical property of Martensitic Stain Less Steel 7C27Mo2, the tensile stress at stamping-out edge has been become pressure stress, compressor efficiency improves, and compressor gas transmission coefficient improves, the Reliability Enhancement of valve block.
In order to process small gap stainless steel 7C27Mo2 valve block, except dwindling punch, die gap, die material is adjusted into the cold-work die steel Cr12MoV consistent with Sandvik 20C; Behind the valve block stamping-out, valve block is carried out roll cast.For guaranteeing that abrasive material can enter the gap in the roll cast process, reconditioning is carried out on the stamping-out that the air-breathing tongue 5 of valve block body 1 and exhaust port the is formed limit of collapsing, can keep roll cast abrasive material, time and the technique the same with Sandvik 20C, after the roll cast to valve block demagnetize, the processing such as encapsulation.
In embodiment four and embodiment five, owing to tongue position gap delta is≤0.4mm, perhaps 0.1mm control, in addition also less than 0.1mm, two kinds of unlike material small gap suction valve chips have all been realized improving the gas transmission coefficient and improving the ability of valve block resisting fatigue destruction.
Embodiment six:
In order to realize the goal of the invention identical with technique scheme, the utility model also provides the manufacture method that adopts to the suction valve chip of the Reciprocting piston compressor described in the embodiment five in embodiment one, and the process technology scheme of the method is:
Behind described suction valve chip stamping-out, described suction valve chip is carried out roll cast, for guaranteeing that abrasive material in the roll cast process can enter the gap between tongue and the valve block body 1, the boundary dimension of roll cast abrasive material is less than this gap delta, the abrasive material profile is smooth profile, do not have corner angle, the roll cast time is 4～5 hours, after the roll cast to described suction valve chip demagnetize, encapsulation process.
The above has carried out exemplary description to the utility model by reference to the accompanying drawings; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; or without improving design of the present utility model and technological scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (9)
1. the suction valve chip of a Reciprocting piston compressor, be used for totally-enclosed reciprocating-piston type refrigerating compressor, be provided with valve block body (1), Aspirating valves tongue (2) and exhaust port (4), it is characterized in that: the gap≤0.4mm between described Aspirating valves tongue (2) and the valve block body (1); The radius of described exhaust port (4) is R3.
2. according to the suction valve chip of Reciprocting piston compressor claimed in claim 1, it is characterized in that: the vertical of described Aspirating valves tongue (2) is the stamping-out direction, and described stamping-out direction is consistent with the grain direction of described valve block body (1).
3. according to the suction valve chip of Reciprocting piston compressor claimed in claim 1, it is characterized in that: the vertical of described Aspirating valves tongue (2) is the stamping-out direction, and the angle of the grain direction of described stamping-out direction and described valve block body (1) is 5 °～20 °.
4. according to the suction valve chip of Reciprocting piston compressor claimed in claim 1, it is characterized in that: the material of described suction valve chip is carbon steel band Sandvik20C.
5. according to the suction valve chip of Reciprocting piston compressor claimed in claim 1, it is characterized in that: the material of described suction valve chip is Spring Steel Band 7C27Mo2.
6. the suction valve chip of a Reciprocting piston compressor, be used for totally-enclosed reciprocating-piston type refrigerating compressor, be provided with valve block body (1), it is characterized in that: described valve block body (1) is provided with the air-breathing tongue of exhaust port (5), be provided with exhaust port reed (3) at the air-breathing tongue of described exhaust port (5), be provided with exhaust port (4) at described exhaust port reed (3); The end of the air-breathing tongue of described exhaust port (5) is the approximate ellipsoidal of a major axis and its stamping-out perpendicular direction; The vertical of the air-breathing tongue of described exhaust port (5) and exhaust port reed (3) is the stamping-out direction, and the air-breathing tongue of described exhaust port (5) is consistent with the stamping-out direction of described exhaust port reed (3); The air-breathing tongue of described exhaust port (5) and valve block body (1) and between gap≤0.4mm.
7. according to the suction valve chip of Reciprocting piston compressor claimed in claim 6, it is characterized in that: the stamping-out direction of the air-breathing tongue of described exhaust port (5) and exhaust port reed (3) is consistent with the grain direction of described valve block body (1).
8. according to the suction valve chip of Reciprocting piston compressor claimed in claim 6, it is characterized in that: the material of described suction valve chip is carbon steel band Sandvik20C.
9. according to the suction valve chip of Reciprocting piston compressor claimed in claim 6, it is characterized in that: the material of described suction valve chip is Spring Steel Band 7C27Mo2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220438745.2U CN202768343U (en) | 2012-08-31 | 2012-08-31 | Suction valve reed for reciprocating piston type compression engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220438745.2U CN202768343U (en) | 2012-08-31 | 2012-08-31 | Suction valve reed for reciprocating piston type compression engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202768343U true CN202768343U (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220438745.2U Expired - Lifetime CN202768343U (en) | 2012-08-31 | 2012-08-31 | Suction valve reed for reciprocating piston type compression engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202768343U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765069A (en) * | 2020-07-16 | 2020-10-13 | 芜湖欧宝机电有限公司 | Compressor valve plate assembly and welding method thereof |
| CN112796977A (en) * | 2021-01-21 | 2021-05-14 | 加西贝拉压缩机有限公司 | Air suction limiting structure of reciprocating piston type compressor for refrigeration |
-
2012
- 2012-08-31 CN CN201220438745.2U patent/CN202768343U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765069A (en) * | 2020-07-16 | 2020-10-13 | 芜湖欧宝机电有限公司 | Compressor valve plate assembly and welding method thereof |
| CN112796977A (en) * | 2021-01-21 | 2021-05-14 | 加西贝拉压缩机有限公司 | Air suction limiting structure of reciprocating piston type compressor for refrigeration |
| CN112796977B (en) * | 2021-01-21 | 2022-07-15 | 加西贝拉压缩机有限公司 | Air suction limiting structure of reciprocating piston type compressor for refrigeration |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |