CN1626801A - Supporting set for discharge valve reciprocal movement type compressor - Google Patents
Supporting set for discharge valve reciprocal movement type compressor Download PDFInfo
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- CN1626801A CN1626801A CN 200310107324 CN200310107324A CN1626801A CN 1626801 A CN1626801 A CN 1626801A CN 200310107324 CN200310107324 CN 200310107324 CN 200310107324 A CN200310107324 A CN 200310107324A CN 1626801 A CN1626801 A CN 1626801A
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Abstract
The invention relates to a discharge valve supporting device of reciprocal compressor. Said reciprocal compressor includes the following structures: reciprocating motor, piston, suction valve, discharge valve, discharge cover and valve spring. The reciprocating motor is placed on the frame for making rotor implement linear reciprocal movement, the piston is combined on the rotor of the above-mentioned reciprocating motor, the suction valve is set on front end surface of the above-mentioned piston, and the above-mentioned discharge valve is set on the front end surface of the cylinder for limiting discharge of medium gas, and the above-mentioned discharge cover is used for covering the discharge side of the above-mentioned cylinder and receiving the discharge valve, and the above-mentioned supporting spring is set between the discharge valve and discharge cover for elastically supporting said discharge valve.
Description
Technical field
The present invention relates to a kind of discharge valve support device (DISCHARCGVALVE SUPPORT APPARATUS FOR RECIPROCATINGCOMPRESSOR) of reciprocating movement compressor.Furtherly, the present invention relates to a kind of discharge valve support device that can bring the reciprocating movement compressor of following effect: when discharge valve opens and closes work, can prevent because side force (side force) causes the inclination of valve spring.
Background technique
In general, above-mentioned reciprocating movement compressor makes piston carry out straight line motion, and the suction fluid compresses; Above-mentioned reciprocating movement compressor is divided into following compress mode substantially: convert rotatablely moving of drive motor the back and forth movement of piston to, and suck the mode that fluid compresses; Make drive motor carry out straight line back and forth movement drive piston and carry out back and forth movement, and suck the mode that fluid compresses.
Fig. 1 is the sectional arrangement drawing that belongs to the latter's reciprocating movement compressor one example.
As shown in the figure, the reciprocating movement compressor of prior art includes following structure: casing 10, frame section 20, back and forth movement formula motor 30, press part 40 and resonant spring portion 50.
Said frame portion 20 flexiblely is supported on the inside of above-mentioned casing 10; Above-mentioned back and forth movement formula motor 30 is fixed in the said frame portion 20, makes rotor 33 carry out the straight line back and forth movement; Above-mentioned press part 40 is combined on the rotor 33 of above-mentioned back and forth movement formula motor 30, is supported in the said frame portion 20; Above-mentioned resonant spring portion 50 rotors 33 along the above-mentioned back and forth movement formula of moving direction resilient support motor 30, the guiding resonance motion.
Said frame portion 20 is made of preceding square bearer 21, central frame 22 and back square bearer 23.Square bearer 21 supports the outer stator 31 of above-mentioned back and forth movement formula motor 30 and the front side of inside stator 32 before above-mentioned, supports above-mentioned press part 40 simultaneously; Above-mentioned central frame 22 be combined in above-mentioned before on the square bearer 21, support outer stator 31 rear sides of above-mentioned back and forth movement formula motor 30, and support the front side resonant spring 52 of above-mentioned resonant spring portion 50; Above-mentioned back square bearer 23 is combined on the above-mentioned central frame 22, supports the rear side resonant spring 53 of above-mentioned resonant spring portion 50.
Above-mentioned back and forth movement formula motor 30 is made of outer stator 31, inside stator 32 and rotor 33.Above-mentioned outer stator 31 is arranged between above-mentioned preceding square bearer 21 and the central frame 22; Above-mentioned inside stator 32 keeps a determining deviation to combine with above-mentioned outer stator 31, inserts to be combined on the above-mentioned preceding square bearer 21; Above-mentioned rotor 33 is arranged between above-mentioned outer stator 31 and the inside stator 32, carries out the straight line back and forth movement.
Above-mentioned press part 40 includes following structure: cylinder 41, piston 42, inhaling valve 43 and exhaust valve assembly 44.Above-mentioned cylinder 41 is pressed into the inner peripheral surface that is fixed on above-mentioned inside stator 32; Above-mentioned piston 42 is combined on the rotor 33 of above-mentioned back and forth movement formula motor 30, carries out back and forth movement in the compression volume P of above-mentioned cylinder 41; Above-mentioned inhaling valve 43 is installed in the front end of above-mentioned piston 42, the suction that is used to open and close the suction passage F of above-mentioned piston 42 and limits dielectric gas; Above-mentioned exhaust valve assembly 44 is installed in the discharge side of above-mentioned cylinder 41, is used to open and close the discharge of compression volume P and limit compression gas.
Fig. 2 is the exploded perspective view of the exhaust valve assembly of prior art reciprocating movement compressor.
As shown in Figure 2, above-mentioned exhaust valve assembly 44 is made of discharge cap 44A, discharge valve 44B and valve spring 44C.Above-mentioned discharge cap 44A is combined in the end of above-mentioned cylinder 41; Above-mentioned discharge valve 44B is inserted in the inside of above-mentioned discharge cap 44A, opens and closes the compression volume P of above-mentioned cylinder 41; Above-mentioned discharge valve 44B is made of conical compression helical spring, the above-mentioned discharge valve 44B of elastic support.
Above-mentioned resonant spring portion 50 is made of spring support platform 51, front side resonant spring 52 and rear side resonant spring 53.Above-mentioned spring support platform 51 is combined in the linking department of above-mentioned rotor 33 and piston 42; Above-mentioned front side resonant spring 52 is the front side of the above-mentioned spring support platform 51 of intermediate support with spring support platform 51; Above-mentioned rear side resonant spring 53 supports the rear side of above-mentioned spring support platform 51.
Unaccounted symbol DP is a gas outlet pipe in the accompanying drawing, and RP is Circulation pipe (LOOP PIPE), and SP is a gas suction pipe.
Below, the work of the reciprocating movement compressor of prior art with said structure is elaborated.
Apply power supply to coming and going on the campaign-styled motor 30, make and form magnetic flux (flux) between outer stator 31 and the inside stator 32, rotor 33 in the space between above-mentioned outer stator 31 and inside stator 32 is moved along flow direction, and continue back and forth movement by resonant spring portion 50; Meanwhile, piston 42 carries out back and forth movement in the inside of cylinder 41 changes the volume of compression volume P, gas is drawn into compression volume compresses discharge then, carries out above-mentioned a series of process repeatedly.
At this moment, when above-mentioned piston 42 downward exit points move, the front-end face closes compression space P that the elasticity by valve spring 44C is combined closely at above-mentioned cylinder 41 discharge valve 44B; When above-mentioned piston 42 when upwards exit point moves, the pressure of dielectric gas overcomes the elastic force of above-mentioned valve spring 44C, moves the compression volume P that opens above-mentioned cylinder 41 to above-mentioned discharge cap 44A the inside.
But the prior art reciprocating movement compressor with said structure has following shortcoming.
In the reciprocating movement compressor of prior art, form taper shape owing to support the valve spring 44C of discharge valve 44B, when opening above-mentioned discharge valve 44B, make the overlapping collision noise that can prevent storeroom that is compressed of material of above-mentioned valve spring 44C; But characteristic according to conical compression helical spring, the direction wide from diameter produces distortion towards the narrow direction of diameter, make contact produce excessive side force (side force), cause valve spring 44C bending as shown in Figure 3 to open and close at the end of discharge cap 44A inner peripheral surface; So, cause the unstable working condition of above-mentioned discharge valve 44B to produce abnormal sound, also can produce the suction of dielectric gas/discharge uneven flow losses simultaneously, reduced the efficient of compressor.
Summary of the invention
The present invention proposes in order to solve above-mentioned problems of the prior art, the purpose of this invention is to provide a kind of discharge valve support device that can bring the reciprocating movement compressor of following effect: make the switching working stability of discharge valve, can prevent to produce abnormal sound in advance, make that the suction/discharge of dielectric gas is stable, can improve the efficient of compressor.
To achieve these goals, reciprocating movement compressor of the present invention comprises: back and forth movement formula motor, piston, inhaling valve, discharge valve, discharge cap and valve spring.Above-mentioned back and forth movement formula motor is arranged on the framework, makes rotor carry out the straight line back and forth movement; Above-mentioned piston is combined on the rotor of above-mentioned back and forth movement formula motor, carries out the straight line back and forth movement by the resonant spring resilient support in the inside of cylinder; Above-mentioned inhaling valve is arranged on the front-end face of above-mentioned piston, opens and closes the suction passage of piston and limits the suction of dielectric gas; Above-mentioned discharge valve is arranged on the front-end face of above-mentioned cylinder, the discharge of restriction dielectric gas; Above-mentioned discharge cap covers the discharge side of above-mentioned cylinder, accommodates above-mentioned discharge valve; Above-mentioned supported spring is arranged between above-mentioned discharge valve and the discharge cap, the above-mentioned discharge valve of resilient support.For reciprocating movement compressor with said structure, the invention provides a kind of discharge valve support device of reciprocating movement compressor, comprising: valve spring twines the compression helical spring that forms by the spacing that spring material is kept a constant pitch and constitutes; At least has more than one point of inflexion between the two ends of above-mentioned valve spring.
Above-mentioned point of inflexion is to be benchmark with the spring center, the point that spring diameter enlarges gradually or dwindles.
The discharge valve support device of reciprocating movement compressor provided by the invention can bring following effect:
In the discharge valve support device of reciprocating movement compressor of the present invention, because it is coniform that the valve spring of support discharge valve forms symmetrical shape, when above-mentioned valve spring compresses and expands, making reciprocal side force produce simultaneously towards central authorities towards both sides or from both sides from central authorities cancels out each other, so can prevent to tilt to a certain direction because of side force causes valve spring, not only can reduce the abnormal sound between cylinder and the discharge valve, and make that the suction/discharge of dielectric gas is even, improved the efficient of compressor.
Description of drawings
Fig. 1 is the sectional drawing of prior art reciprocating movement compressor one example;
Fig. 2 is the exploded perspective view of the exhaust valve assembly of prior art reciprocating movement compressor;
Fig. 3 is the schematic drawing of the discharge valve working state of prior art reciprocating movement compressor;
Fig. 4 is the sectional drawing of reciprocating movement compressor one example of the present invention;
Fig. 5 is the exploded perspective view of the exhaust valve assembly of reciprocating movement compressor of the present invention;
Fig. 6 is the schematic drawing of the discharge valve working state of reciprocating movement compressor of the present invention;
Fig. 7 is the valve spring distortion exploded perspective view of the exhaust valve assembly of reciprocating movement compressor of the present invention.
The critical piece description of reference numerals
10: casing (CASE) 20: frame section (FRAME UNITY)
30: back and forth movement formula motor 40: press part
41: cylinder (CYLINDER) 42: piston (PISTON)
43: inhaling valve 44: exhaust valve assembly
44A: discharge cap (COVER) 44B: discharge valve (VALVE)
44C: valve spring 50: resonant spring portion
Embodiment
With reference to the accompanying drawings, the embodiment to the discharge valve support device of reciprocating movement compressor of the present invention is elaborated.
Fig. 4 is the sectional drawing of reciprocating movement compressor one example of the present invention.Fig. 5 is the exploded perspective view of the exhaust valve assembly of reciprocating movement compressor of the present invention.Fig. 6 is the schematic drawing of the discharge valve working state of reciprocating movement compressor of the present invention.Fig. 7 is the exploded perspective view that the valve spring of the exhaust valve assembly of reciprocating movement compressor of the present invention is out of shape.
As shown in the figure, reciprocating movement compressor of the present invention includes following structure: casing 10, frame section 20, back and forth movement formula motor 30, press part 40 and resonant spring portion 50.
Said frame portion 20 flexiblely is supported on the inside of above-mentioned casing 10; Above-mentioned back and forth movement formula motor 30 is fixed in the said frame portion 20, makes rotor 33 carry out the straight line back and forth movement; Above-mentioned press part 40 makes piston 42 carry out the straight line back and forth movement with the rotor 33 of above-mentioned back and forth movement formula motor 30, compressed media gas; The piston 42 of the above-mentioned press part 40 of above-mentioned resonant spring portion's 50 guiding carries out resonance motion.
Said frame portion 20 is made of preceding square bearer 21, central frame 22 and back square bearer 23.Square bearer 21 supports the outer stator 31 of above-mentioned back and forth movement formula motor 30 and the front side of inside stator 32 before above-mentioned, supports above-mentioned press part 40 simultaneously; Above-mentioned central frame 22 be combined in above-mentioned before on the square bearer 21, support outer stator 31 rear sides of above-mentioned back and forth movement formula motor 30, and support the front side resonant spring 52 of above-mentioned resonant spring portion 50; Above-mentioned back square bearer 23 is combined on the above-mentioned central frame 22, supports the rear side resonant spring 53 of above-mentioned resonant spring portion 50.
Above-mentioned back and forth movement formula motor 30 is made of outer stator 31, inside stator 32 and rotor 33.Above-mentioned outer stator 31 is arranged between above-mentioned preceding square bearer 21 and the central frame 22; Above-mentioned inside stator 32 keeps a determining deviation to combine with above-mentioned outer stator 31, inserts to be combined on the above-mentioned preceding square bearer 21; Above-mentioned rotor 33 is arranged between above-mentioned outer stator 31 and the inside stator 32, carries out the straight line back and forth movement.
Above-mentioned press part 40 includes following structure: cylinder 41, piston 42, inhaling valve 43 and exhaust valve assembly 44.Above-mentioned cylinder 41 is pressed into the inner peripheral surface that is fixed on above-mentioned inside stator 32; Above-mentioned piston 42 is combined on the rotor 33 of above-mentioned back and forth movement formula motor 30, carries out back and forth movement in the compression volume P of above-mentioned cylinder 41; Above-mentioned inhaling valve 43 is installed in the front end of above-mentioned piston 42, the suction that is used to open and close the suction passage F of above-mentioned piston 42 and limits dielectric gas; Above-mentioned exhaust valve assembly 44 is installed in the discharge side of above-mentioned cylinder 41, is used to open and close the discharge of compression volume P and limit compression gas.
As shown in Figure 5, above-mentioned exhaust valve assembly 44 is made of discharge cap 44A, discharge valve 44B and valve spring 44C.Above-mentioned discharge cap 44A covers the discharge side of above-mentioned cylinder 41; The above-mentioned discharge valve 44B that forms with semi-spherical shape is contained in the inside of above-mentioned discharge cap 44A, is removably disposed in the discharge side of above-mentioned cylinder 41; The end of above-mentioned valve spring 44C is pressed into the compression rear that is fixed on above-mentioned discharge valve 44B, and its other end is fixed on the above-mentioned discharge cap 44A.
As shown in Figure 5, above-mentioned valve spring 44C is twined the compression helical spring formation that forms by the spacing that spring material is kept a constant pitch (PICTH); During from front projection, above-mentioned valve spring 44C forms " rhombus " shape that centre has point of inflexion, makes each enclose overlapping being compressed of spring material of (TURN).
In addition, as mentioned above, above-mentioned valve spring 44C is with " positive rhombus " shape of the thickness of material or material diameter and identical making formation such as the pitch or the number of turns, makes that both sides are that the center is symmetrical with the central authorities between the two ends; But according to circumstances, also the thickness of two layers of material or material diameter and the pitch or the number of turns etc. can be form differently mutually, make both sides asymmetric.
In addition, as shown in Figure 7, above-mentioned valve spring 44C also can form " leaking husky timer " shape that the diameter that makes two ends narrows down gradually along central authorities greatly.
In addition, above-mentioned valve spring 44C preferably forms the number of turns according to integral multiple, makes two ends be positioned on the straight line, can keep uniform support force.
On the one hand, above-mentioned resonant spring portion 50 is made of spring support platform 51, front side resonant spring 52 and rear side resonant spring 53.Above-mentioned spring support platform 51 is combined in the linking department of above-mentioned rotor 33 and piston 42; Above-mentioned front side resonant spring 52 is the front side of the above-mentioned spring support platform 51 of intermediate support with spring support platform 51; Above-mentioned rear side resonant spring 53 supports the rear side of above-mentioned spring support platform 51.
Give identical symbol with the same section of prior art in the accompanying drawing.
Unaccounted symbol DP is a gas outlet pipe in the accompanying drawing, and RP is a Circulation pipe, and SP is a gas suction pipe.
Below, the action effect of the discharge valve support device of reciprocating movement compressor of the present invention with said structure is elaborated.
Apply power supply to coming and going on the campaign-styled motor 30, make and form magnetic flux (flux) between outer stator 31 and the inside stator 32, rotor 33 in the space between above-mentioned outer stator 31 and inside stator 32 is moved along flow direction, and continue back and forth movement by resonant spring portion 50; Meanwhile, piston 42 carries out back and forth movement in the inside of cylinder 41, dielectric gas is drawn into compression volume P compresses discharge then.
Below, the process that sucks dielectric gas is elaborated.
As shown in Figure 6, when above-mentioned piston 42 downward exit points move, the front-end face closes compression space P that the elasticity by valve spring 44C is combined closely at above-mentioned cylinder 41 discharge valve 44B; When above-mentioned piston 42 when upwards exit point moves, the pressure of dielectric gas overcomes the elastic force of above-mentioned valve spring 44C, moves the compression volume P that opens above-mentioned cylinder 41 to above-mentioned discharge cap 44A the inside.
At this moment, when making above-mentioned valve spring 44C form conical situation, when compressing repeatedly and expanding, produce side force, cause tilting to a certain direction for the contact that prevents storeroom; But in the present invention, make valve spring 44C form taper shape, and central authorities possess point of inflexion is arranged, both sides form symmetric shape substantially; In these cases, according to the characteristic of conical compression helical spring, the direction wide from diameter at first produces distortion, makes reciprocal side force produce simultaneously towards the point of inflexion of central authorities towards two ends or from two ends from the point of inflexion of central authorities and cancels out each other; Finally, can prevent, make above-mentioned valve spring 44C compress repeatedly and expand along straight line because side force causes the inclination of valve spring 44C.
So, valve spring compresses and when expanding, owing to do not tilt to move along straight line to a certain direction, make the stable working state of the discharge valve by above-mentioned valve spring support, can reduce the abnormal sound between cylinder and the discharge valve, and the flow losses that can prevent the suction/inhomogeneous generation of discharge because of the dielectric gas in advance problem that causes compressor efficiency to reduce.
Claims (8)
1. the discharge valve support device of a reciprocating movement compressor, wherein reciprocating movement compressor comprises:
Back and forth movement formula motor, piston, inhaling valve, discharge valve, discharge cap and valve spring;
Above-mentioned back and forth movement formula motor is arranged on the framework, makes rotor carry out the straight line back and forth movement;
Above-mentioned piston is combined on the rotor of above-mentioned back and forth movement formula motor, carries out the straight line back and forth movement by the resonant spring resilient support in the inside of cylinder;
Above-mentioned inhaling valve is arranged on the front-end face of above-mentioned piston, opens and closes the suction passage of piston and limits the suction of dielectric gas;
Above-mentioned discharge valve is arranged on the front-end face of above-mentioned cylinder, the discharge of restriction dielectric gas;
Above-mentioned discharge cap covers the discharge side of above-mentioned cylinder, accommodates above-mentioned discharge valve;
Above-mentioned supported spring is arranged between above-mentioned discharge valve and the discharge cap, the above-mentioned discharge valve of resilient support;
Reciprocating movement compressor for having said structure is characterized in that:
Valve spring twines the compression helical spring that forms by the spacing that spring material is kept a constant pitch and constitutes; At least has more than one point of inflexion between the two ends of above-mentioned valve spring.
2. the discharge valve support device of reciprocating movement compressor according to claim 1 is characterized in that:
Above-mentioned point of inflexion is to be benchmark with the spring center, the point that spring diameter enlarges gradually or dwindles.
3. the discharge valve support device of reciprocating movement compressor according to claim 1 is characterized in that:
The point of inflexion of above-mentioned valve spring is formed on centre.
4. the discharge valve support device of reciprocating movement compressor according to claim 3 is characterized in that:
Above-mentioned valve spring both sides are that the center forms relatively symmetrically with the point of inflexion.
5. according to the discharge valve support device of the described reciprocating movement compressor of claim, it is characterized in that:
Above-mentioned valve spring both sides are that the center asymmetricly forms with the point of inflexion.
6. according to the discharge valve support device of claim 4 or 5 described reciprocating movement compressors, it is characterized in that:
In above-mentioned valve spring, make the diameter of point of inflexion periphery bigger than the diameter at two ends.
7. according to the discharge valve support device of claim 4 or 5 described reciprocating movement compressors, it is characterized in that:
In above-mentioned valve spring, make the diameter at two ends bigger than the diameter of point of inflexion periphery.
8. according to the discharge valve support device of claim 4 or 5 described reciprocating movement compressors, it is characterized in that:
Above-mentioned valve spring forms the number of turns according to integral multiple, makes two ends be positioned on the straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310107324 CN1626801A (en) | 2003-12-12 | 2003-12-12 | Supporting set for discharge valve reciprocal movement type compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310107324 CN1626801A (en) | 2003-12-12 | 2003-12-12 | Supporting set for discharge valve reciprocal movement type compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1626801A true CN1626801A (en) | 2005-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310107324 Pending CN1626801A (en) | 2003-12-12 | 2003-12-12 | Supporting set for discharge valve reciprocal movement type compressor |
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| CN (1) | CN1626801A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672061A (en) * | 2012-09-03 | 2014-03-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Vent valve |
| US11384666B2 (en) | 2019-10-30 | 2022-07-12 | Faurecia Emissions Control Technologies, Usa, Llc | Adaptive exhaust valve with purpose-designed spring |
-
2003
- 2003-12-12 CN CN 200310107324 patent/CN1626801A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672061A (en) * | 2012-09-03 | 2014-03-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Vent valve |
| US11384666B2 (en) | 2019-10-30 | 2022-07-12 | Faurecia Emissions Control Technologies, Usa, Llc | Adaptive exhaust valve with purpose-designed spring |
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