CN100424355C - Discharge valve device of rotary compressor - Google Patents
Discharge valve device of rotary compressor Download PDFInfo
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- CN100424355C CN100424355C CNB2004100197088A CN200410019708A CN100424355C CN 100424355 C CN100424355 C CN 100424355C CN B2004100197088 A CNB2004100197088 A CN B2004100197088A CN 200410019708 A CN200410019708 A CN 200410019708A CN 100424355 C CN100424355 C CN 100424355C
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- spool
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Abstract
The present invention relates to a discharge valve device of a rotary compressor, which comprises a valve casing, a main bearing, a valve core and a plurality of flexible components, wherein the valve casing is composed of a suction port communicated with a suction opening of a cylinder, a discharge port communicated with an inner space of the cylinder, and a valve installing part communicated with the suction port and the discharge port; the main bearing is used for covering the valve casing, the valve installing part and the inner space of the cylinder, and one side of the main bearing is provided with a discharge hole; the valve core is inserted into the valve installing part in a sliding way to open and close the suction port and the discharge port; the flexible components are respectively flexibly supported at the front side and the back side of the valve core to cause the valve core to move with refrigerating agent gases flowing in through the suction port and refrigerating agent gases discharged by the discharge port. The drive of the valve core is stable, and therefore, the compressing performance of the compressor can be improved. The flexible components at the front side and the back side of the valve core and the refrigerating agent gases flowing out of both sides flow out reduce the impact between the valve core and the valve casing, and the valve noise is obviously reduced when the valve core is opened and closed.
Description
Technical field
The invention belongs to the device of valve of the circulation of fluid of rotary compressor, particularly relate to a kind of both sides of elastic support spool, make valve function stable and further reduce the discharging valve device of the rotary compressor of valve noise.
Background technique
Generally, reed-type discharge valve assembly one end is set to fixed end, the other end is set to free end, and utilizing the elastic force of the pressure difference of valve both sides and valve itself to make free end is that the center is done angular motion and opened and closed and discharge port with the fixed end.Usually, the reed-type discharge valve assembly is installed in the discharge side of cylinder, utilizes pressing chamber and discharges pressure difference between the chamber and the elastic force of valve opens and closes the discharge port of cylinder, regulates the discharge of refrigerant gas simultaneously.
Fig. 1 is the rotary compressor sectional drawing that possesses prior art reed-type expulsion valve, and Fig. 2 is the amplification profile of ' A ' portion.
The prior art rotary compressor as shown in the figure, its main structure includes casing 1, mechanism portion and compression mechanical part.A certain amount of lubricant oil of the internal reservoir of casing 1 and connection are provided with gas suction pipe SP and gas outlet pipe DP; Mechanism portion is arranged on the upside of casing 1 and produces rotating force; Compression mechanical part is arranged on the downside of casing 1 and utilizes the rotating force compressed refrigerant that produces in mechanism portion.
Mechanism portion is to be made of stator Ms and rotor Mr.Stator Ms is fixed on the inside of casing 1 and from outside turn-on power, rotor Mr rotates every fixed gap installation and with stator Ms is interactional simultaneously in the inside of stator Ms.
The main structure of compression mechanical part includes cylinder 2, main bearing 3 and auxiliary bearing 4, running shaft 5, rolling piston 6, blade (not shown), exhaust valve component 7 and baffler 8.Wherein, cylinder 2 forms annular and is arranged on the inside of casing 1; Main bearing 3 and auxiliary bearing 4 cover the both sides up and down of cylinder 2 separately and form the inner space together; Running shaft 5 is pressed in the rotor Mr, and is supported and the transmission rotating force by main bearing 3 and auxiliary bearing 4; Rolling piston 6 is combined on running shaft 5 eccentric parts and rotates, and when circling round in the inner space of cylinder 2 compressed refrigerant; The outer circumferential face of blade (not shown) pressure touch scrolling piston 6 also can be to the moving radially of cylinder 2, and the inner space V with cylinder 2 is separated into suction chamber and pressing chamber thus; Near the exhaust port 3b front end that exhaust valve component 7 is combined in main bearing 3 central authorities opens and closes its exhaust port 3b, and the refrigerant gas that control is discharged from pressing chamber; Baffler 8 possesses the resonant chamber that can hold exhaust valve component 7, and is arranged on the outer side surface of main bearing 3.
Main bearing 3 forms promising insertion running shaft 5 and the axis hole 3a of radial support running shaft 5 in central authorities, and the side periphery of axis hole 3a is formed with the exhaust port 3b that the refrigerant gas of pressing chamber is discharged to high-voltage section.
As shown in Figure 2, discharge valve assembly 7 includes expulsion valve 7a and positioning work piece 7b.Expulsion valve 7a is fixed on the exhaust port 3b of the outer side surface switching main bearing 3 of main bearing 3.Positioning work piece 7b is positioned at the back of expulsion valve 7a, is fixed on restriction expulsion valve 7a open amount on the main bearing 3 with expulsion valve 7a.
Expulsion valve 7a has certain flexible rectangular sheet metal, and the one end is for being fixed on the fixed end on the main bearing 3 with positioning work piece 7b, and the other end forms the free end that opens and closes main bearing 3 exhaust port 3b.
Positioning work piece 7b has certain flexible rectangular sheet metal, one section forms is close to the line part that is fixed on the main bearing 3 with expulsion valve 7a, and the other end forms the curve part with the morphosis curved surface of expulsion valve 7a bending at a certain distance at the pressure back side of expulsion valve 7a.
The running of the rotary compressor of prior art is described as follows.
If turn-on power in the stator Ms of mechanism portion and rotor Mr, the running shaft 5 of compression mechanical part rotates with rotor Mr, and rolling piston 6 is in the eccentric rotation in the inner space of cylinder 2.Off-centre rotation according to rolling piston 6, the suction chamber that refrigerant gas flows into cylinder 2 continues to be compressed to certain pressure, surpass the moment of casing 1 internal pressure then at the pressing chamber pressure of cylinder 2, refrigerant gas is discharged to casing 1 inside by the exhaust port 3b of main bearing 3 to baffler 8.
Outlet side at exhaust port 3b is provided with the reed type discharge valve assembly, and when the pressure of pressing chamber rose to more than the certain pressure, the pressure that expulsion valve 7a is compressed the chamber promoted and crooked, and exhaust port 3b opens simultaneously, and compression refrigerant gas is discharged; When the pressure of pressing chamber dropped to below the certain pressure, expulsion valve 7a recovered again and closes exhaust port 3b.
In the prior art reed-type expulsion valve, each positioning work piece 7b and valve block (not shown) collision is arranged when expulsion valve 7a opens or closes and produce the valve noise, produce compression loss and compression efficiency is descended, the bad and degradation problem under the compression performance of running when increasing primary starting.In addition, also have because of expulsion valve 7a bump positioning work piece 7b or the damage of valve block internal structure, the problem of decreased performance.
At these shortcomings, inventor 2000.05.08 application Korean Patent (application number: 2000-24452 number, publication number: 2001-103867, grant number: KR0360859) " discharging valve device of rotary compressor " as shown in Figure 3, blade groove (not shown) side at cylinder 10 forms discharge port 11 and the valve assembly department 12 that is connected therewith, form the tap hole 21 that it is communicated with valve assembly department 12 at main bearing 3,12 li slips of valve assembly department at cylinder 10 are inserted as the spool 30 that opens and closes discharge port 11 and tap hole 21, in a side of spool 30 elastic member 40 that is made of compressing spring are installed.
The discharging valve device of this prior art rotary compressor; the spool 30 that replaces valve leaf according to the difference of inner space V pressure and elastic member 40 elastic forces when valve assembly department 12 slides; open and close and discharge port 11 and tap hole 21; though so have when can reduce valve noise and compression loss; the strong point of Protective valve internal structure; but spool 30 is just utilized the elastic force of elastic member 40 to close by discharging after pressurized gas that port 11 flows into is opened at inner space V, therefore has the running instability of valve to reduce the shortcoming of compression performance on the contrary.40 of elastic members use an elastic member 40 to support a side, and when such elastic member 40 hardness were excessive, the excessive velocities that spool 30 is closed or the speed of unlatching were slow excessively, so the shortcoming that compression loss takes place is arranged; Opposite when elastic member 40 hardness are too small, the speed that spool 30 is closed is crossed excessive velocities slow or unlatching, so the problem of the suction loss that the leakage by refrigerant gas causes is arranged.
In addition, according to the intensity of elastic member 40, spool 30 clashes and discharges on the protuberance of port 11, so easily produce the valve noise at valve assembly department 12.
Summary of the invention
The technical problem of the present invention for existing in the solution known technology, and a kind of stabilized driving expulsion valve that has is provided, and can improve compression performance, can reduce the discharging valve device of the rotary compressor of the valve noise that produces when expulsion valve opens and closes simultaneously.
The technological scheme that the present invention takes for the technical problem that exists in the solution known technology is: the rotary compressor main structure includes cylinder, a plurality of bearing, rolling piston and blade.Wherein, cylinder forms annular and is fixed on the inside of casing; The both sides up and down that a plurality of bearings cover cylinder form the inner space together, and the running shaft of combination on the radial and axial support drive rotor; Rolling piston is combined in the rotating shaft eccentric portion in the internal junction of cylinder and rotates, and moves refrigeration agent eccentric rotation the time; Blade contacts and is arranged in the cylinder with rolling piston under spring pressure, and when moving according to the off-centre of rolling piston rotation radial alignment, the leaf baffle refrigerant gas is compressed it, and it also has discharging valve device.Rotary compressor discharging valve device of the present invention includes valve casing, main bearing, spool and a plurality of elastic member.Wherein, valve casing is by be communicated with the inhalation port that the refrigerant gas part that makes suction is circled round with the suction port of cylinder, be communicated with the discharge port that the refrigerant gas after the compression is discharged with the inner space of cylinder, the valve assembly department that is communicated with inhalation port and discharges port constitutes; Main bearing covers valve casing and the valve assembly department inner space with cylinder and supporting rotating shaft, is formed with to be communicated with the valve assembly department in its side to make the tap hole of pressurized air to the discharge of the inside of casing; Spool slides and to open and close inhalation port and to discharge port in the valve assembly department be inserted in valve casing; A plurality of elastic members are the both sides, front and back of elastic support spool separately, and spool is moved with the refrigerant gas that flows into by inhalation port with by the refrigerant gas of discharging the port inflow.
Described spool makes when opening discharges port and tap hole connection, and inhalation port and tap hole are cut off.
Advantage and good effect that the present invention has are:
The discharging valve device of rotary compressor of the present invention, in the valve assembly department of the valve casing that is communicated with inhalation port and discharge port, slide and insert spool, and the both sides at spool are inserted in elastic member separately, utilize elastic member thus and open and close spool from the pressure difference of the refrigerant gas of two side inflows.So the driving of spool is stable, and the compression performance of compressor is improved greatly, the elastic member of both sides and relax impact between spool and the valve assembly department from the refrigerant gas of two side inflows before and after the spool can significantly reduce the valve noise when spool opens and closes simultaneously.
Description of drawings
Fig. 1 is the sectional drawing that possesses the rotary compressor of prior art reed-type expulsion valve;
Fig. 2 is the amplification profile of ' A ' portion;
Fig. 3 is the rotary compressor fragmentary cross-sectional view that possesses prior art piston type expulsion valve;
Fig. 4 is the rotary compressor fragmentary cross-sectional view that possesses piston type expulsion valve of the present invention;
Fig. 5 is the discharging valve device oblique drawing of rotary compressor of the present invention;
Fig. 6 a is the expulsion valve working condition schematic representation in the rotary compressor of the present invention;
Fig. 6 b is the expulsion valve working condition schematic representation in the rotary compressor of the present invention.
Embodiment
Specify the discharging valve device of rotary compressor of the present invention below in conjunction with an embodiment and accompanying drawing.
Fig. 4 is the rotary compressor sectional drawing that possesses piston type expulsion valve of the present invention.Fig. 5 is the discharging valve device oblique drawing of rotary compressor of the present invention; Fig. 6 a is the expulsion valve working condition schematic representation in the rotary compressor of the present invention; Fig. 6 b is the expulsion valve working condition schematic representation in the rotary compressor of the present invention.
Rotary compressor as shown in the figure, it includes cylinder 110, running shaft 5 and main bearing 120.Wherein, cylinder 110 is fixed on the inside of casing 1 and forms the compressed inner space of refrigerant gas; The rotor Mr that running shaft 5 is combined in mechanism portion goes up the transmission rotating force; Main bearing 120 is close to the upside supporting rotating shaft 5 that is arranged on cylinder 110, the rolling piston 6 of rotatably combination on the running shaft.Discharging valve device of the present invention is applicable in the rotary compressor that its main structure includes valve casing 130, spool the 140, the 1st elastic member 151 and the 2nd elastic member 152.Wherein, valve casing 130 possesses inhalation port 131 and discharges port 132 between cylinder 110 and main bearing 120, and have the valve assembly department 133 that be to be communicated with inhalation port 131 and to discharge port 132, and valve assembly department 133 utilizes in order to cover to the main bearing 120 that casing 1 guiding possesses tap hole 122 by the refrigerant gas that valve assembly department 133 is discharged; 133 li switchings of valve assembly department inhalation port 131 and discharge port 132 that spool 140 slides and is inserted in valve casing 130; The both sides, front and back of the 1st elastic member 151 and the 2nd elastic member 152 elastic support spools 140.
Main bearing 120 forms the circular plate shape that covers cylinder 110 inner space V, is formed with running shaft 5 in the central and inserts the back by the axis hole 121 of radial support, is formed with the tap hole 122 that it is communicated with valve assembly department (133) in a side periphery of axis hole 121.
When tap hole 122 should be positioned at spool 140 unlatchings, be communicated with discharge port 132, opposite when closing and on the position of inhalation port 131 blocking-up.In addition, tap hole 122 should be identical with the diameter of discharging port 132, helps smooth discharging refrigerant gas.
The 1st elastic member 151 and the 2nd elastic member 152 are made of the compressing spring that produces to inhalation port 131 and discharge port 132 promotion spools 140, and have the length that spool 140 can be placed between inhalation port 131 and the discharge port 132.
The part identical with existing structure used identical symbol in the accompanying drawing.
The action effect of rotary compressor discharging valve device of the present invention is described as follows.
If turn-on power in the mechanism portion, running shaft rotation 5, the rolling piston 6 of combination changes the volume of its inner space V when inner space V makes rotation motion at cylinder 110 on running shaft 5 eccentric parts, so refrigerant gas is by the suction port 111 inflow inner space V of cylinder 110 and along with rolling piston 6 moves, be compressed owing to being blocked by blade this moment, is discharged to 1 li of casing by the discharge port 132 of valve assembly department 133 and the tap hole 122 of main bearing 120 then.
This moment is shown in Fig. 6 a, when rolling piston 6 carries out suction stroke, refrigerant gas flows into cylinder 110 inner spaces (promptly by suction port 111, suck the zone) V, and part of refrigerant gas dwindles according to inner space V and compressedly gradually moves simultaneously, and another part refrigerant gas flows into 133 li of valve assembly departments by inhalation port 131 and promotes spools 140 with valve assembly department 133 the 1st elastic member 151 to discharging port 132.In addition, because the 2nd elastic member 152 compressed while spools 140 are to discharging port 132 side shiftings, tap hole 122 sealings, so the inner space of cylinder 110 (that is, constricted zone) V is airtight, refrigerant gas compression simultaneously and reach certain pressure.
Then, shown in Fig. 6 b, rolling piston 6 is done further rotation motion and when carrying out compression stroke, the part of refrigerant gas of constricted zone continues to flow into the valve assembly departments 133 of valve casings 130 by discharge port 132 at the inner space of cylinder 110 V, promote spool 140 with the 2nd elastic member 152 to inhalation port 131, so the 2nd elastic member 152 restores.On the contrary, because the 1st elastic member 151 compressions, spool 140 moves and opens tap hole 122 to inhalation port 131 directions, and discharge port 132 and valve assembly department 133 and tap hole 122 in the constricted zone compressed refrigerant process of cylinder 110 and be discharged to casing 1 inside this moment.
In sum, since spool utilize both sides elastic member elasticity and by inhalation port with discharge port and do sliding movement from the refrigerant gas pressure difference of spool two side inflows and open and close tap hole, the driving of spool is stable, the compression performance of compressor improves greatly thus, simultaneously the elastic member of both sides and relax impact between spool and the valve assembly department from the refrigerant gas of two side inflows before and after the spool can significantly reduce the valve noise.
Claims (2)
1. the discharging valve device of a rotary compressor, the rotary compressor main structure includes cylinder, a plurality of bearing, rolling piston and blade; Cylinder forms annular and is fixed on the inside of casing; The both sides up and down that a plurality of bearings cover cylinder form the inner space together, and the running shaft that combines on radial and axial support and the drive motor rotor; Rolling piston is combined in the rotating shaft eccentric portion in the internal junction of cylinder and rotates, and moves refrigeration agent eccentric rotation the time; Blade contacts and is arranged in the cylinder with rolling piston under spring pressure, and when the off-centre rotation radial alignment of rolling piston moved, the leaf baffle refrigerant gas was compressed it; It is characterized in that it also has discharging valve device, discharging valve device includes valve casing (130), main bearing (120), spool (140) and a plurality of elastic member (151,152);
Valve casing is by be communicated with the inhalation port (131) that the refrigerant gas part that makes suction is circled round with the suction port of cylinder; Be communicated with the discharge port (132) that the refrigerant gas after the compression is discharged with the inner space of cylinder; The valve assembly department (133) that is communicated with inhalation port and discharge port constitutes;
Main bearing covers valve casing and the valve assembly department inner space with cylinder and supporting rotating shaft (5), is formed with to be communicated with the valve assembly department in its side to make the tap hole (122) of pressurized air to the discharge of the inside of casing;
Spool slides and to open and close inhalation port (131) and discharge port (132) in the valve assembly department be inserted in valve casing;
A plurality of elastic members are the both sides, front and back of elastic support spool separately, and spool is moved with the refrigerant gas that flows into by inhalation port with by the refrigerant gas of discharging the port inflow.
2. the discharging valve device of rotary compressor according to claim 1 is characterized in that spool makes discharge port and tap hole be communicated with, and makes inhalation port and tap hole cut off on the contrary when closing when opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100197088A CN100424355C (en) | 2004-06-21 | 2004-06-21 | Discharge valve device of rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100197088A CN100424355C (en) | 2004-06-21 | 2004-06-21 | Discharge valve device of rotary compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1712714A CN1712714A (en) | 2005-12-28 |
| CN100424355C true CN100424355C (en) | 2008-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100197088A Expired - Fee Related CN100424355C (en) | 2004-06-21 | 2004-06-21 | Discharge valve device of rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100424355C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644266B (en) * | 2009-09-01 | 2012-07-18 | 珠海格力电器股份有限公司 | Exhaust device of rotary compressor |
| CN105114310B (en) * | 2015-08-21 | 2019-08-02 | 广东美芝制冷设备有限公司 | Rotary compressor and its compression assembly |
| CN111720318B (en) * | 2020-06-29 | 2021-11-23 | 安徽美芝精密制造有限公司 | Compression mechanism and compressor with same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS601397A (en) * | 1983-06-17 | 1985-01-07 | Toyoda Autom Loom Works Ltd | Compressor of variable compression capacity type |
| US5074760A (en) * | 1988-08-12 | 1991-12-24 | Mitsubishi Jukogyo Kabushiki Kaisha | Scroll type compressor |
| JPH10159757A (en) * | 1996-11-29 | 1998-06-16 | Matsushita Electric Ind Co Ltd | Capacity-controlled scroll compressor |
| CN1427178A (en) * | 2001-12-17 | 2003-07-02 | 乐金电子(天津)电器有限公司 | Vortex compressor having device for preventing noise |
-
2004
- 2004-06-21 CN CNB2004100197088A patent/CN100424355C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS601397A (en) * | 1983-06-17 | 1985-01-07 | Toyoda Autom Loom Works Ltd | Compressor of variable compression capacity type |
| US5074760A (en) * | 1988-08-12 | 1991-12-24 | Mitsubishi Jukogyo Kabushiki Kaisha | Scroll type compressor |
| JPH10159757A (en) * | 1996-11-29 | 1998-06-16 | Matsushita Electric Ind Co Ltd | Capacity-controlled scroll compressor |
| CN1427178A (en) * | 2001-12-17 | 2003-07-02 | 乐金电子(天津)电器有限公司 | Vortex compressor having device for preventing noise |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1712714A (en) | 2005-12-28 |
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Granted publication date: 20081008 |