CN203892151U - Secondary reed valve of air compressor - Google Patents
Secondary reed valve of air compressor Download PDFInfo
- Publication number
- CN203892151U CN203892151U CN201420307322.6U CN201420307322U CN203892151U CN 203892151 U CN203892151 U CN 203892151U CN 201420307322 U CN201420307322 U CN 201420307322U CN 203892151 U CN203892151 U CN 203892151U
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- China
- Prior art keywords
- valve
- valve plate
- exhaust
- plate
- air compressor
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Abstract
The utility model provides a secondary reed valve of an air compressor, wherein an air inlet valve and an exhaust valve of the secondary reed valve are flexible and rapid in movement, large in exhaust amount, high in compression efficiency, small in air valve flow loss and low in working noise. The secondary reed valve comprises a secondary valve plate with the circular cross section, and is characterized in that the an exhaust passageway and a suction passageway are arranged on the two sides of the center line of the secondary valve plate respectively, the suction passageway comprises a plurality of kidney-shaped grooves different in length and formed in the secondary valve plate, and the exhaust passageway comprises four circular holes formed in the secondary valve plate; one side of the secondary valve plate is provided with a suction valve block and an elastic pressing piece which are matched with the suction passageway, and the other side of the secondary valve plate is provided with an exhaust valve block and an exhaust valve lift limiter which are matched with the exhaust passageway; the middle of exhaust valve block is fixed to the secondary valve plate through two connecting screws, and the two ends of the exhaust valve block are free.
Description
Technical field
The utility model relates to air compressor, is specifically related to a kind of secondary Reed Valve of air compressor of larger discharge capacity.
Background technique
Air compressor is a kind of widely used equipment, and Reed Valve is obvious for the compression performance impact of air compressor.The air compressor of prior art, Reed Valve working condition is unsatisfactory, be mainly reflected in: air inlet Reed Valve is partially soft, easily cause late release phenomenon, on-off action is not quick, and exhaust Reed Valve occurs that the probability of air valve chatter phenomenon is higher, this all has influence on the performance of air compressor, cause air displacement to decline, power consumption improves, and machine entirety specific power is high.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of air compressor secondary Reed Valve, and its inlet and outlet are agile, and air displacement is large, and compression efficiency is high, and air valve flow losses are little, and operating noise is low.
For solving the problems of the technologies described above, air compressor secondary Reed Valve of the present utility model, comprise that profile is circular secondary valve plate, it is characterized in that: on described secondary valve plate, be respectively arranged with exhaust passage and air intake passage along center line both sides, described air intake passage comprises out the kidney slot that many on secondary valve plate are different in size, and described exhaust passage comprises out four circular holes on secondary valve plate; In a side of secondary valve plate, be provided with the suction valve chip and the elastic pressuring plate that mate with air intake passage, opposite side is provided with the exhaust valve plate and the exhaust valve lift limiter that mate with exhaust passage; Described exhaust valve plate is fixed on secondary valve plate by two attachment screws in the middle, and two ends freely.
Adopt after technique scheme, expiratory phase, suction valve chip is opened, and exhaust passage is closed automatically, and air is entered by air intake passage; Exhaust phase, elastic pressuring plate can accelerate closing of suction valve chip, and exhaust valve plate is opened, and air is discharged by four circular holes, and exhaust valve plate lift is by exhaust valve lift limiter limits; Inlet and outlet valve events agility, air displacement is large, and compression efficiency is high, and air valve flow losses are little, and operating noise is low.
Preferably, four described circular holes are close to the inward flange setting of secondary valve plate.The inner chamber of the corresponding cylinder of the inward flange of secondary valve plate, the edge setting of the close cylinder that four circular holes are tried one's best, can improve exhaust efficiency.
Preferably, described kidney slot is six.
Preferably, on described secondary valve plate, be provided with the valve ear step mating with described exhaust valve plate.
Outlet valve place working pressure is generally three times of left and right at Aspirating valves place, in the time that Aspirating valves is opened, outlet valve will be closed, and to close quickly and accurately, arrive cylinder in order to avoid make gas backstreaming in cylinder head exhaust cavity, four circular hole surroundings are uniformly distributed, and are conducive to improve the sealing effect of the gas to elevated pressures.The efficiency of closing that valve ear step has further improved exhaust valve plate is set.
Preferably, the inlet end of four described circular holes is provided with circular hole chamfering, and the inlet end of described kidney slot is provided with kidney slot chamfering.Air-flow enter valve plate passage place all fall 2 × 45° angle, to reduce wedge angle flow losses.
Preferably, described suction valve chip comprises valve block enclosure portion and a valve block connection handle that can cover many kidney slots completely; Described elastic pressuring plate is shaped as V-type, comprises two apex of the wing and an apex of the wing joint; What described valve block enclosure portion was mated with many kidney slots is arranged on secondary valve plate one side, and described valve block connection handle has a length that extends to its offside; Two described apex of the wing are arranged along valve block connection handle length direction; Suction valve chip, elastic pressuring plate are fixed on secondary valve plate by two attachment screws jointly; In described valve block enclosure portion with the multiple auxiliary air-breathing through holes of being provided with of many kidney slots dislocation.
Shift to install and refer in the time that suction valve chip is closed, can seal the gas circuit of many kidney slots completely.In the time that suction valve chip is opened, air-flow preferentially enters cylinder by auxiliary air-breathing through hole, can improve gettering efficiency.
Preferably, the described large external diameter φ of secondary valve plate 180mm, cylinder bore φ 130mm; Described elastic pressuring plate thickness is 1 mm.
Three angle θ of suction valve chip
1, θ
2, θ
3be respectively 11 °, 57 °, 166 °, three angle θ of exhaust valve plate
1, θ
2, θ
3be respectively 4 °, 43 °, 80 °; Described
θ 1 finger air valve imagination is closed angle, described
θ 2 refer to that valve block starts to depart from lift limiter, until the crank angle of correspondence in piston arrives dead-centre position duration; Described
θ 3 refer to that valve block arrives lift limiter until corresponding crank angle of this period of time of piston arrives stop.Such scheme makes that air compressor secondary Reed Valve is air-breathing, exhaust efficiency reaches optimum.
Brief description of the drawings
Fig. 1 is the structural representation of air compressor secondary Reed Valve of the present utility model;
Fig. 2 is the assembling schematic diagram of air compressor secondary Reed Valve of the present utility model;
Fig. 3 is the left view of secondary valve plate of the present utility model;
Fig. 4 is the right elevation of Fig. 2;
Fig. 5 is the schematic diagram of the suction valve chip of air compressor secondary Reed Valve of the present utility model;
Fig. 6 is the schematic diagram of the elastic pressuring plate of air compressor secondary Reed Valve of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As visible in Fig. 1 to Fig. 6, air compressor secondary Reed Valve of the present utility model, comprise that profile is circular secondary valve plate 1, on described secondary valve plate 1, be respectively arranged with exhaust passage and air intake passage along center line both sides, described air intake passage comprises out the kidney slot different in size of many on secondary valve plate 1 10, and described exhaust passage comprises out four circular holes 11 on secondary valve plate 1; In a side of secondary valve plate 1, be provided with the suction valve chip 2 and the elastic pressuring plate 3 that mate with air intake passage, opposite side is provided with the exhaust valve plate 4 and the exhaust valve lift limiter 5 that mate with exhaust passage; Described exhaust valve plate 4 is fixed on secondary valve plate 1 by two attachment screws 6 in the middle, and two ends freely.
Described exhaust valve lift limiter 5 is one ") " template, its middle part is fixed on secondary valve plate 1 by two attachment screws 6 jointly with exhaust valve plate 4, and its two ends upwarp, for exhaust valve plate 4 two ends provide suitable lift.
Four described circular holes 11 are close to the inward flange setting of secondary valve plate 1.In the scope that exhaust valve plate 4 allows at air valve cap, keep to the side along design, can obtain larger lift, thereby obtain larger valve clearance passage section.
Described kidney slot 10 is six.
On described secondary valve plate 1, be provided with the valve ear step 14 mating with described exhaust valve plate 4.
The inlet end of four described circular holes 11 is provided with circular hole chamfering 110, and the inlet end of described kidney slot 10 is provided with kidney slot chamfering 100.
Described suction valve chip 2 comprises valve block enclosure portion 20 and a valve block connection handle 21 that can cover many kidney slots 10 completely; Described elastic pressuring plate 3 is shaped as V-type, comprises two apex of the wing 30 and an apex of the wing joint 31; What described valve block enclosure portion 20 was mated with many kidney slots 10 is arranged on secondary valve plate 1 one sides, and described valve block connection handle 21 has a length that extends to its offside; Two described apex of the wing 30 are arranged along valve block connection handle 21 length directions; Suction valve chip 2, elastic pressuring plate 3 are fixed on secondary valve plate 1 by two attachment screws 6 jointly; In described valve block enclosure portion 20 with the multiple auxiliary air-breathing through holes 22 of being provided with of misplacing of many kidney slots 10.
On described valve block connection handle 21, be provided with rigidity adjustment hole 210, by the adjusting to aperture, can realize the adjusting to suction valve chip 2 rigidity.
As an embodiment of the present utility model, the described large external diameter φ 180mm of secondary valve plate 1, cylinder bore φ 130mm, secondary valve plate 1 inner edge diameter is φ 130.Gas-entered passageway is made up of 6 kidney slots 10, exhaust passage is made up of circular hole 11 and the valve ear step 14 thereof of 4 φ 20, air-flow enter valve plate passage place all fall 2 × 45° angle, the inlet end of four circular holes 11 is provided with circular hole chamfering 110, and the inlet end of described kidney slot 10 is provided with kidney slot chamfering 100.
Being characterized as of elastic pressuring plate 3 on described suction valve chip 2: profile is V-shaped pointed, overall length 50mm, width 40mm, has 2 φ 5.3 circular holes on it, and centre distance is 30 mm, and it has five place's fillet smooth transition.Its thickness is that 1 mm, net area are 1.03 × 10
-3m
2.
Described exhaust valve plate 4 is characterized as: fixing in the middle of it, two ends freely.Valve block total length 116 mm, width 46mm, has 2 φ 5.3 circular holes on it.Lift limiter 5 adopts t4 steel plate punched to form, and there is a 13mm straight section in its bearing, and it is 3.5mm that the effect of exhaust valve lift limiter 5 makes the maximum lift of exhaust valve plate 4.
In above-mentioned secondary Reed Valve design technology project, can effectively utilize cylinder φ 130 spaces for suction valve, utilizing the gasflow mach number that valve clearance area calculates is 0.17.And outlet valve is subject to the constraint exhaust Mach number in cylinder head space generally higher than air inlet Mach number, the exhaust Mach 2 ship 0.2 that this is routine, they are all better than recommendation in designing technique handbook.Because of the appropriate design of elastic pressuring plate 3, can produce and be twice in the spring force of suction valve chip 2 own, according to final result of calculation, three angle (θ that suction valve chip 2 is evaluated
1, θ
2, θ
3) be 11 °, 57 °, 166 °, three angles of exhaust valve plate are 4 °, 43 °, 80 °, they all meet θ
2/ θ
1> 2, θ
2/ θ
3davis's decision criteria of < 0.7.
List computational process and result with form below, attached relevant formula after form.
1. formula one
2. formula two, by valve clearance calculated gas flow Mach number
3. formula three
4. formula four, fixes by one end, and the other end is subject to the flexible valve bending tablet model of single force to calculate spring force, and they are all reduced to true form equivalent rectangular strip and calculate.
Secondary suction valve chip spring force is 3.4N, elastic pressuring plate 6.7N.
5. formula five
6.
θ 1 -air valve imagination is closed angle, it with
θ 2 ,
θ 3 the same, be all the angle of refunding tolerance from stroke stop point.
θ 1 be supposition airless thrust, valve block, under spring-force driven dual, drops to the crank angle of required correspondence valve seat from fully open position.
θ 1 desirable its corresponding crank angle of 1/4 free oscillating period of calculating.Theory analysis shows: its value and valve block gauge length, rotating speed, valve plate material density, Young's modulus, throttle slice thickness are relevant.
7.
θ 2 -valve block starts to depart from lift limiter 5, until piston arrives dead-centre position duration corresponding crank angle.It with
μwhile being worth square root, crank to connecting rod length ratio, crank operation, corner is relevant.
8.
θ 3 -valve block arrives lift limiter 5 until corresponding crank angle of this period of time of piston arrives stop.It is relevant with relative clearance volume, nominal pressure ratio, expansion or compression process index.
The present embodiment example result of calculation shows θ 2/ θ 1 > 2, if can not meet this condition, will make inlet and outlet valve produce late release, cause air displacement sharply to decline, θ 2/ θ 3 < 0.7, if can not meet this condition, will make inlet and outlet valve produce flutter, cause air valve flow losses greatly to increase, the air valve noise bad phenomenon such as be multiplied.
Claims (9)
1. an air compressor secondary Reed Valve, comprise that profile is circular secondary valve plate (1), it is characterized in that: be above respectively arranged with exhaust passage and air intake passage along center line both sides at described secondary valve plate (1), described air intake passage comprises out many kidney slots different in size (10) on secondary valve plate (1), and described exhaust passage comprises out four circular holes (11) on secondary valve plate (1); In a side of secondary valve plate (1), be provided with the suction valve chip (2) and the elastic pressuring plate (3) that mate with air intake passage, opposite side is provided with the exhaust valve plate (4) and the exhaust valve lift limiter (5) that mate with exhaust passage; It is upper that described exhaust valve plate (4) is fixed on secondary valve plate (1) by two attachment screws (6) in the middle, and two ends freely.
2. air compressor secondary Reed Valve as claimed in claim 1, is characterized in that: described four circular holes (11) are close to the inward flange setting of secondary valve plate (1).
3. air compressor secondary Reed Valve as claimed in claim 1 or 2, is characterized in that: described kidney slot (10) is six.
4. air compressor secondary Reed Valve as claimed in claim 1 or 2, is characterized in that: on described secondary valve plate (1), be provided with the valve ear step (14) mating with described exhaust valve plate (4).
5. air compressor secondary Reed Valve as claimed in claim 1 or 2, is characterized in that: the inlet end of described four circular holes (11) is provided with circular hole chamfering (110), and the inlet end of described kidney slot (10) is provided with kidney slot chamfering (100).
6. air compressor secondary Reed Valve as claimed in claim 1 or 2, is characterized in that: described suction valve chip (2) comprises valve block enclosure portion (20) and a valve block connection handle (21) that can cover many kidney slots (10) completely; Described elastic pressuring plate (3) is shaped as V-type, comprises two apex of the wing (30) and an apex of the wing joint (31); What described valve block enclosure portion (20) was mated with many kidney slots (10) is arranged on secondary valve plate (1) one side, and described valve block connection handle (21) has a length that extends to its offside; Described two apex of the wing (30) are arranged along valve block connection handle (21) length direction; Suction valve chip (2), elastic pressuring plate (3) are fixed on secondary valve plate (1) by two attachment screws (6) jointly; What described valve block enclosure portion (20) was upper and many kidney slots (10) misplace is provided with multiple auxiliary air-breathing through holes (22).
7. air compressor secondary Reed Valve as claimed in claim 6, is characterized in that: on described valve block connection handle (21), be provided with rigidity adjustment hole (210).
8. air compressor secondary Reed Valve as claimed in claim 6, is characterized in that: the large external diameter φ 18mm of described secondary valve plate (1), cylinder bore φ 130mm; Described elastic pressuring plate (3) thickness is 1 mm.
9. air compressor secondary Reed Valve as claimed in claim 8, is characterized in that: three angle θ of described suction valve chip (2)
1, θ
2, θ
3be respectively 11 °, 57 °, 166 °, three angle θ of exhaust valve plate (4)
1, θ
2, θ
3be respectively 4 °, 43 °, 80 °; Described
θ 1 finger air valve imagination is closed angle, described
θ 2 refer to that valve block starts to depart from lift limiter, until the crank angle of correspondence in piston arrives dead-centre position duration; Described
θ 3 refer to that valve block arrives lift limiter until corresponding crank angle of this period of time of piston arrives stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420307322.6U CN203892151U (en) | 2014-06-11 | 2014-06-11 | Secondary reed valve of air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420307322.6U CN203892151U (en) | 2014-06-11 | 2014-06-11 | Secondary reed valve of air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203892151U true CN203892151U (en) | 2014-10-22 |
Family
ID=51718564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420307322.6U Withdrawn - After Issue CN203892151U (en) | 2014-06-11 | 2014-06-11 | Secondary reed valve of air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203892151U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047836A (en) * | 2014-06-11 | 2014-09-17 | 安徽华晶机械股份有限公司 | Air compressor second-level reed valve |
| CN104696193A (en) * | 2015-02-11 | 2015-06-10 | 合肥通用机械研究院 | Combined piston for air compressor |
-
2014
- 2014-06-11 CN CN201420307322.6U patent/CN203892151U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047836A (en) * | 2014-06-11 | 2014-09-17 | 安徽华晶机械股份有限公司 | Air compressor second-level reed valve |
| CN104047836B (en) * | 2014-06-11 | 2016-09-28 | 安徽华晶机械股份有限公司 | Two grades of Reed Valves of air compressor |
| CN104696193A (en) * | 2015-02-11 | 2015-06-10 | 合肥通用机械研究院 | Combined piston for air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141022 Effective date of abandoning: 20160928 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |