CN105464978A - Sliding piece control structure for variable capacity air cylinder, variable capacity air cylinder and variable capacity compressor - Google Patents
Sliding piece control structure for variable capacity air cylinder, variable capacity air cylinder and variable capacity compressor Download PDFInfo
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- CN105464978A CN105464978A CN201510965018.XA CN201510965018A CN105464978A CN 105464978 A CN105464978 A CN 105464978A CN 201510965018 A CN201510965018 A CN 201510965018A CN 105464978 A CN105464978 A CN 105464978A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
- F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
- F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
- F04C18/3564—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/005—Axial sealings for working fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
- F04C28/065—Capacity control using a multiplicity of units or pumping capacities, e.g. multiple chambers, individually switchable or controllable
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/18—Pressure
- F04C2270/185—Controlled or regulated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
- Compressor (AREA)
Abstract
The invention relates to a sliding piece control structure for a variable capacity air cylinder and the variable capacity air cylinder with the same and a variable capacity compressor with the same. The sliding piece control structure comprises a pin arranged on the lower side of a sliding piece. The pin is provided with a first position which can be engaged with the sliding piece and a second position which can be disengaged from the sliding piece. A low-pressure channel is formed in the lower portion of the pin. A surface sealing structure is arranged between the pin and the low-pressure channel. When the pin is in the second position, surface sealing is formed at the lower end of the pin. According to the sliding piece control structure, the surface sealing structure is arranged, the sealing effect of surface sealing is much better than that of clearance sealing, leakage amount of refrigerant is greatly reduced, and then the efficiency of the compressor is improved when the variable capacity air cylinder is in a working mode, so that the performance of the compressor is optimized.
Description
Technical field
The present invention relates to Compressor Technology field, be specifically related to a kind of slide plate control structure of transfiguration cylinder and be provided with transfiguration cylinder and the variable volume compressor of this slide plate control structure.
Background technique
The common structure of existing variable volume compressor is that compressor main body comprises master cylinder and transfiguration cylinder, and transfiguration cylinder optionally works or do not work, thus realizes the change of work discharge capacity, to adapt to the different burden requirement of refrigeration system, reaches energy-conservation object.Existing transfiguration cylinder adopts a kind of so-called pin-slide plate switching mode usually: slide plate, cylinder and the bearing and dividing plate etc. that cover cylinder two ends form closed cavity at slide plate afterbody, and this closed cavity alternative passes into high voltage/low voltage gas; Slide plate side is provided with pin locking/tripper, this device is made up of pin hole, pin, spring etc., wherein the head of pin communicates with above-mentioned closed cavity, the afterbody of pin introduces low pressure by low-pressure channel, and is exerted oneself by the precompose that physical unit (as spring, magnet etc.) makes pin have to slide plate is close.The defect that aforesaid way exists is: when needs transfiguration cylinder normally runs, need to pass into higher pressure refrigerant gas in closed cavity, higher pressure refrigerant gas causes refrigeration oil in closed cavity to be discharged; And in order to ensure that pin can slide up and down in pin hole, between pin and pin hole, there is certain gap, thus lubricant oil clearance seal cannot be realized; Moreover refrigeration agent viscosity is far smaller than lubricant oil, clearance leakage speed is fast.Therefore, prior art can produce following adverse effect: to leak showed increased to the refrigeration agent of transfiguration cylinder air inlet by pin side clearance from closed cavity, causes that transfiguration cylinder volumetric efficiency reduces, performance reduces; In addition, during batch production, the gap length of different compressors can not be accomplished completely the same, thus can cause compressor cooling/heating capacity fluctuation obviously, is unfavorable for controlling compressor and air-conditioning products mass stability.
Summary of the invention
In view of this, the present invention, in order to solve the problems of the technologies described above at least in part, provide a kind of and can ensure the slide plate control structure of the transfiguration cylinder of sealing effect and be provided with transfiguration cylinder and the variable volume compressor of this slide plate control structure.
According to a first aspect of the invention, provide a kind of slide plate control structure of transfiguration cylinder, described slide plate control structure comprises:
Pin, is arranged on the downside of described slide plate, and described pin has the primary importance that can engage described slide plate and the second place that can depart from described slide plate;
The below of described pin is provided with low-pressure channel;
Surface seal structure is provided with between described pin and low-pressure channel, when described pin is in the second place, the lower end forming surface sealing of described pin.。
Preferably, described pin is arranged in pin hole, and described pin hole is shoulder hole, the internal diameter of the part of described pin hole on the upside of the internal diameter of the part of lower end is less than, like this, form in the part of described pin hole near lower end the step surface radially extended internally.
Preferably, described step surface is provided with sealing gasket, the lower end of described pin can closely be pressed on the upper surface of described sealing gasket, forms described sealing between the lower end of described pin and the upper surface of described sealing gasket.
Preferably, the centre of described sealing gasket is formed with through hole.
Preferably, the downside of described pin is provided with seal diaphragm, the lower end of described pin can be resisted against on the upper surface of described seal diaphragm, forms described sealing between the lower end of described pin and the upper surface of described seal diaphragm.
Preferably, the bottom of described pin is provided with groove, and position corresponding with described groove on described seal diaphragm is provided with the first through hole.
Preferably, described first through hole overall dimensions is in the horizontal plane less than the maximum outside diameter of described pin
Preferably, described first through hole overall dimensions is in the horizontal plane less than described groove overall dimensions in the horizontal plane.
Preferably, described seal diaphragm is provided with the second through hole, described second through hole makes described low-pressure channel can be connected with the suction port of described transfiguration cylinder.
According to a second aspect of the invention, provide a kind of transfiguration cylinder, be provided with the slide plate control structure in the application.
According to a third aspect of the invention we, provide a kind of variable volume compressor, be provided with the transfiguration cylinder in the application.
In the application, owing to being provided with surface seal structure between pin and low-pressure channel, the sealing effect of face sealing is far superior to clearance seal, significantly reduces the leakage rate of refrigeration agent, and then improve the efficiency of compressor when transfiguration cylinder is in mode of operation, optimize the performance of compressor; Further, owing to being provided with above-mentioned surface seal structure, good sealing effect in the application, the requirement on machining accuracy of pin hole can be reduced like this, reduce processing cost and the assembly cost of pin hole, the compressor quality of production is stablized.
Accompanying drawing explanation
By referring to the description of accompanying drawing to the embodiment of the present invention, above-mentioned and other objects, features and advantages of the present invention will be more clear, in the accompanying drawings:
Fig. 1 is transfiguration cylinder in prior art in variable volume compressor structural representation when being in normal mode of operation;
Fig. 2 is transfiguration cylinder in prior art in variable volume compressor structural representation when being in unloading mode;
Fig. 3 be in Fig. 1 A-A cross section analyse and observe partial enlarged drawing;
The structural representation (corresponding with part shown in Fig. 3) that Fig. 4 is a preferred embodiment of the present invention;
The structural representation (corresponding with part shown in Fig. 3) that Fig. 5 is another preferred embodiment of the present invention.
Embodiment
Hereinafter with reference to accompanying drawing, various embodiment of the present invention is described in more detail.In various figures, identical element adopts same or similar reference character to represent.For the sake of clarity, the various piece in accompanying drawing is not drawn in proportion.
It should be noted that, term used herein " on ", D score, "front", "rear", "left", "right" and similar statement just for illustrative purposes, not for limiting structure of the present invention.
As Figure 1-3, the pump assembly of variable volume compressor comprises bent axle 1, and the first cylinder 2 and the second cylinder 3 being connected to upper bearing (metal) 4 on bent axle 1, lower bearing 5, cover plate 7 and being folded between upper bearing (metal) 4 and lower bearing 5.Spaced apart by dividing plate 6 between described first cylinder 2 and the second cylinder 3, wherein the second cylinder 3 is transfiguration cylinder.Described upper bearing (metal) 4, first cylinder 2, dividing plate 6, second cylinder 3, lower bearing 5 and cover plate 7 are installed successively along the axis of compressor crank shaft 1.The first vane slot is provided with in described first cylinder 2, first slide plate 10 is arranged in the first vane slot, first slide plate 10 presses to the first rolling piston 8 under the elastic force effect of spring being arranged at its back, first slide plate 10 contacts with the outer surface of the first rolling piston 8, thus the first cylinder 2 inner chamber is divided into suction chamber and pressing chamber.The second vane slot is provided with in the second cylinder 3, described second slide plate is arranged in the second vane slot, closed cavity 18 is formed at the back (being positioned at the side on the right of the second slide plate 11 in Fig. 1) of described second slide plate 11, this closed cavity 18 is provided with pressure and switches pipe 12, this pressure switches pipe 12 and can be connected with external air source (not shown), and described external air source can be preferably the high voltage/low voltage gas from this compressor outlet/intakeport.This pressure switches pipe 12 and is connected with external air source by control valve, this control valve preference is as adopted solenoid valve or three-way valve etc., switch the switching of the high/low body of calming the anger passed in pipe 12 for pilot pressure, thus make can pass into high pressure or low-pressure gas in pressure switching pipe 12.When passing into pressurized gas in described pressure switching pipe 12, described second slide plate 11 can press to the second rolling piston 9 under the gas pressure effect passed into, second slide plate 11 contacts with the outer surface of the second rolling piston 9, thus the second cylinder 3 inner chamber is divided into suction chamber and pressing chamber.Wherein the first rolling piston 8 and the second rolling piston 9 are fixedly mounted on the eccentric part of compressor crank shaft 1, do eccentric rotary, thus compress the refrigerant gas entering cylinder inner cavity under the drive of compressor crank shaft 1 in cylinder.
In lower bearing 5, be provided with pin hole 17, preferably, the axis being parallel of this pin hole 17 is in the axis of compressor crank shaft 1, and the upper end of described pin hole 17 is communicated with described closed cavity 18.Be provided with the low-pressure channel 15 (see Fig. 3) be connected with described second cylinder intake hole 16 in the below of described pin hole 17, a part for described low-pressure channel 15 is preferably arranged on described cover plate 7.In described pin hole 17, be provided with pin 13, described pin 13 can move up and down in pin hole 17.The downside of described pin 13 is provided with biasing member 14, and described biasing member can be the physical units such as spring, and this biasing member 14 provides bias force upwards to described pin 13.Preferably, on the downside of described pin 13, be provided with groove 131, described biasing member 14 is arranged between the cover plate 7 below the roof of described groove and pin 13.On the lower surface of described second slide plate 11, correspondence is provided with the cotter slot 111 (see Fig. 1) that can match with the upper end of described pin 13, when pin 13 moves up and end protrudes from lower bearing 5, the upper end portion of pin 13 can extend in the described cotter slot 111 of the second slide plate 11, thus described second slide plate 11 is locked in locking position (now described pin 13 is in primary importance).
When passing into pressurized gas in pressure switching pipe 12, described pin 13 is under the effect of pressurized gas, the precompose overcoming biasing member 14 firmly and the gas pressure of low-pressure channel, pin 13 is moved down and leaves the cotter slot 111 on described second slide plate 11, thus pin 13 is positioned at make the free unlocked position of the second slide plate 11 (now described pin 13 is in the second place), described second slide plate 11 presses to the second rolling piston 9 under the effect of its back pressurized gas, second slide plate 11 head contacts with the outer surface of the second rolling piston 9, thus realize the normal compression process of the second cylinder 3 (transfiguration cylinder).
When passing into low pressure in pressure switching pipe 12, the head (upper end) of described pin 13 and afterbody (lower end) pressure balance, move up under the effect that described pin 13 is exerted oneself at the precompose of described biasing member 14, near described second slide plate 11, when described second slide plate 11 runs to described cotter slot 111 position relative with the head of pin 13, the head of described pin 13 inserts in the cotter slot 111 of the second slide plate 11, thus engage described second slide plate 11, now described second slide plate 11 departs from described second rolling piston 9, described second cylinder 3 cannot normally be worked, realize the unloading of the second cylinder 3 (transfiguration cylinder).
There is certain defect in existing structure shown in accompanying drawing 1-3, when passing into pressurized gas in pressure switching pipe 12, as shown in Figure 3, the refrigeration oil in closed cavity 18 can be discharged by the higher pressure refrigerant gas in closed cavity 18.To can slide up and down in pin hole 17 needs for guarantee pin 13, certain gap is certainly existed between pin 13 and pin hole 17, when refrigeration oil is discharged, now cannot realize the clearance seal of lubricant oil, thus higher pressure refrigerant gas can along the gap between the outer wall of pin 13 and the inwall of pin hole 17, along direction shown in the arrow in Fig. 3 to external leakage.Higher pressure refrigerant gas enters into the inlet hole 16 of the second cylinder 3 via the gap between the outer wall of pin 13 and the inwall of pin hole 17 and the low-pressure channel 15 below pin 13, the expansion of higher pressure refrigerant gas makes the actual amount of carrying out gas circulation of the second cylinder 3 reduce, and the gas that repeated compression is leaked, both refrigerating capacity was reduced, additionally consume power again, service behaviour when making existing variable volume compressor carry out two cylinder operation declines.
The present invention is the improvement that the basis of described in the above prior art variable volume compressor is carried out, the variable volume compressor slide plate control structure in the present invention is provided with in this existing variable volume compressor, that is, slide plate control structure in the present invention is applied in the variable volume compressor with above-mentioned structure and parts, below the slide plate control structure of the variable volume compressor in the present invention is described in detail, in order to avoid the repetition that content is too much, the part identical with said structure will repeat no more.
As shown in Figure 4, in a preferred embodiment of the invention, the second cylinder 103 of variable volume compressor is arranged on the top of lower bearing 105, and the below of lower bearing 105 is provided with cover plate 107.Be provided with in lower bearing 105 and be formed as stair-stepping pin hole 117, the internal diameter of the part of described pin hole 117 on the upside of the internal diameter of the part of lower end is less than, like this, the step surface radially extended internally is formed in the part of described pin hole 117 near lower end, this step surface is provided with sealing gasket 109, and sealing pad 109 preferably but be not limited to metallic gasket or rubber gasket.Sealing pad 109 is for Gask-O-Seal and center is provided with through hole.The pin 113 that downside is provided with groove 1131 is arranged in described pin hole 17, and the lower end surface of described pin 113 can be connected on the upper surface of the sealing gasket 109 on described step surface.Be provided through the through hole on described sealing gasket 109 in the groove 1131 of described pin 113 and the biasing member 114 contacted with cover plate 107, described biasing member 114 is preferably spring, for providing bias force upwards to described pin 113.The lower end of described pin 113 is communicated with the low-pressure channel 115 on cover plate 107, and then is communicated with the inlet hole 116 of the second cylinder 103.Described sealing gasket 109 is metal material or quality of rubber materials.
When the second cylinder 103 of the variable volume compressor in the above embodiment of the present invention normally works, higher pressure refrigerant gas is passed in closed cavity (not shown) above described pin 113, under the effect of higher pressure refrigerant gas, pin 113 overcomes the effect of the gas pressure of precompose firmly and in low-pressure channel of biasing member 114, described pin 113 is moved down into the second place in pin hole 117, thus pin 113 is departed from the slide plate of described second cylinder 103, the lower end of described pin 113 is closely pressed on the upper surface of described sealing gasket 109 simultaneously, seal in the lower end forming surface of described pin 113.Now the second cylinder 103 carries out normal compression work.This higher pressure refrigerant gas can flow downward along the gap between pin 113 and pin hole 117, but the lower end due to pin 113 is closely pressed on sealing gasket 109, thus at the pin 113 step surface place forming surface sealing configuration with pin hole 17, and then the gap between pin 113 and pin hole 117 and between the low-pressure channel 115 on the downside of pin 113 forming surface seal.The sealability of this surface seal structure will be far superior to the clearance seal between pin 113 and pin hole 117, the leakage rate of refrigeration agent is significantly reduced, thus effectively improves the performance of compressor.
As shown in Figure 5, in another preferred embodiment of the invention, the second cylinder 203 of variable volume compressor is arranged on the top of lower bearing 205, is disposed with seal diaphragm 218 and cover plate 207 in the below of lower bearing 205.Wherein, in lower bearing 205, be provided with pin hole 217, in pin hole 217, be provided with the pin 213 of band fluted 2131.The biasing member 214 that can produce precompose and exert oneself is provided with, such as spring between the seal diaphragm 218 below the roof and pin 213 of the groove 2131 of pin 213.Position corresponding with the groove 2131 on described pin hole 17 on described seal diaphragm 218 is provided with the first through hole 219.Preferably, described through hole 219 overall dimensions is in the horizontal plane less than the external diameter of pin 213, can be resisted against on the upper surface of seal diaphragm 218 to make the lower end of pin 213.More preferably, described through hole 219 overall dimensions is in the horizontal plane less than described groove 2131 overall dimensions in the horizontal plane, can be resisted against on the upper surface of seal diaphragm 218 to make the bottom of described biasing member 214.When described through hole 219 is circular hole, its overall dimensions is its diameter.Described cover plate 207 is provided with the low-pressure channel 215 be communicated with the second cylinder intake hole 216, preferably, in order to make described low-pressure channel 215 can be connected with the inlet hole 216 of described second cylinder 203, described seal diaphragm 218 is provided with the second through hole 220.The set-up mode of described low-pressure channel 215 and the first through hole 219 and the second through hole 220 is not unique, can have various structures form, as long as the inlet hole 216 of the downside of described pin 213 with described second cylinder 203 can be communicated with.Preferably, described seal diaphragm 218 is made or impact briquetting for machining.
When second cylinder 203 of the variable volume compressor in the above embodiment of the present invention normally works, in the closed cavity (not shown) above described pin 213, pass into higher pressure refrigerant gas.Under the effect of higher pressure refrigerant gas, described pin 213 overcomes the gas pressure effect of precompose firmly and in low-pressure channel of biasing member, thus make pin 213 be moved down into the second place in pin hole 17, thus pin 213 is departed from the slide plate of described second cylinder 203, now the second cylinder 203 carries out normal compression work.This higher pressure refrigerant gas can flow downward along the gap between pin 213 and pin hole 217, but because the bottom end face of pin 213 contacts with forming surface between seal diaphragm 218, seal in the lower end forming surface of described pin 213, under the effect of pressure at two ends difference, the lower end of pin 213 is pressed on the upper-end surface of seal diaphragm 218 closely, thus forming surface seals between the lower end of pin 213 and the upper-end surface of seal diaphragm 218, the sealability of this surface seal structure will be far superior to the clearance seal between pin 213 and pin hole 217, the leakage rate of refrigeration agent is significantly reduced, thus improve the performance of compressor.
In the application, owing to being provided with surface seal structure between pin and low-pressure channel, the sealing effect of face sealing is far superior to clearance seal, significantly reduces the leakage rate of refrigeration agent, and then improve the efficiency of compressor when transfiguration cylinder is in mode of operation, optimize the performance of compressor; Further, owing to being provided with above-mentioned surface seal structure, good sealing effect in the application, the requirement on machining accuracy of pin hole can be reduced like this, reduce processing cost and the assembly cost of pin hole, the compressor quality of production is stablized.
Unless otherwise defined, technology used herein is identical with the implication that those skilled in the art of the present invention understand usually with scientific terminology.Term used herein, just in order to describe concrete enforcement object, is not intended to limit the present invention.Terms such as such as " parts " that occur herein both can represent single part, also can represent the combination of multiple part.The term such as such as " installation ", " setting " etc. occurred herein both can represent that parts were directly attached to another parts, also can represent that parts are attached to another parts by middleware.The feature described in one embodiment herein can be applied to another mode of execution individually or with further feature in combination, unless this feature is inapplicable or be otherwise noted in this another mode of execution.
The present invention is illustrated by above-mentioned mode of execution, but should be understood that, above-mentioned mode of execution just for the object of illustrating and illustrate, and is not intended to the present invention to be limited within the scope of described mode of execution.It will be appreciated by persons skilled in the art that and can also make more kinds of variants and modifications according to instruction of the present invention, within these variants and modifications all drop on the present invention's scope required for protection.
Claims (11)
1. a slide plate control structure for transfiguration cylinder, described slide plate control structure comprises:
Pin (113,213), be arranged on the downside of described slide plate (11), described pin (113,213) has the primary importance that can engage described slide plate (11) and the second place that can depart from described slide plate (11);
Low-pressure channel (115,215) is provided with in the below of described pin;
It is characterized in that, at described pin (113,213) and low-pressure channel (115,215) surface seal structure is provided with between, when described pin (113,213) is in the second place, the lower end forming surface sealing of described pin (113,213).
2. slide plate control structure according to claim 1, is characterized in that,
Described pin (113) is arranged in pin hole (117), described pin hole (117) is shoulder hole, the internal diameter of the part of described pin hole (117) on the upside of the internal diameter of the part of lower end is less than, like this, form in the part of described pin hole (117) near lower end the step surface radially extended internally.
3. slide plate control structure according to claim 2, it is characterized in that, described step surface is provided with sealing gasket (109), the lower end of described pin (113) can closely be pressed on the upper surface of described sealing gasket (109), forms described sealing between the lower end of described pin (113) and the upper surface of described sealing gasket (109).
4. the slide plate control structure according to Claims 2 or 3, is characterized in that, the centre of described sealing gasket (109) is formed with through hole.
5. slide plate control structure according to claim 1, it is characterized in that, the downside of described pin (113) is provided with seal diaphragm (218), the lower end of described pin (213) can be resisted against on the upper surface of described seal diaphragm (218), forms described sealing between the lower end of described pin (213) and the upper surface of described seal diaphragm (218).
6. slide plate control structure according to claim 5, it is characterized in that, the bottom of described pin (213) is provided with groove (2131), and the upper position corresponding with described groove (2131) of described seal diaphragm (218) is provided with the first through hole (219).
7. slide plate control structure according to claim 6, is characterized in that, described first through hole (219) overall dimensions is in the horizontal plane less than the maximum outside diameter of described pin (213)
8. slide plate control structure according to claim 6, is characterized in that, described first through hole (219) overall dimensions is in the horizontal plane less than described groove (2131) overall dimensions in the horizontal plane.
9. slide plate control structure according to claim 6, it is characterized in that, described seal diaphragm (218) is provided with the second through hole (220), and described second through hole (220) makes described low-pressure channel (215) can be connected with the suction port (216) of described transfiguration cylinder (203).
10. a transfiguration cylinder, is characterized in that, is provided with the slide plate control structure described in any one of claim 1-9.
11. 1 kinds of variable volume compressors, is characterized in that, are provided with transfiguration cylinder according to claim 10.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510965018.XA CN105464978A (en) | 2015-12-18 | 2015-12-18 | Sliding piece control structure for variable capacity air cylinder, variable capacity air cylinder and variable capacity compressor |
| JP2018527862A JP6609051B2 (en) | 2015-12-18 | 2016-09-14 | Sliding vane control structure of variable volume cylinder, variable volume cylinder and variable capacity compressor |
| PCT/CN2016/099111 WO2017101537A1 (en) | 2015-12-18 | 2016-09-14 | Sliding vane control structure for variable-capacity air cylinder, variable-capacity air cylinder and variable-capacity compressor |
| EP16874597.4A EP3392507B1 (en) | 2015-12-18 | 2016-09-14 | Variable-capacity cylinder with sliding vane control structure and variable-capacity compressor |
| KR1020187016208A KR102029610B1 (en) | 2015-12-18 | 2016-09-14 | Sliding vane control structure, variable displacement cylinder and variable displacement compressor of variable displacement cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510965018.XA CN105464978A (en) | 2015-12-18 | 2015-12-18 | Sliding piece control structure for variable capacity air cylinder, variable capacity air cylinder and variable capacity compressor |
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| Publication Number | Publication Date |
|---|---|
| CN105464978A true CN105464978A (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510965018.XA Pending CN105464978A (en) | 2015-12-18 | 2015-12-18 | Sliding piece control structure for variable capacity air cylinder, variable capacity air cylinder and variable capacity compressor |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3392507B1 (en) |
| JP (1) | JP6609051B2 (en) |
| KR (1) | KR102029610B1 (en) |
| CN (1) | CN105464978A (en) |
| WO (1) | WO2017101537A1 (en) |
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| WO2017101537A1 (en) * | 2015-12-18 | 2017-06-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Sliding vane control structure for variable-capacity air cylinder, variable-capacity air cylinder and variable-capacity compressor |
| CN109058108A (en) * | 2018-09-18 | 2018-12-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Transfiguration cylinder assembly, compressor pump and compressor |
| CN109958625A (en) * | 2018-12-20 | 2019-07-02 | 珠海格力电器股份有限公司 | Deformation control method and system for elastic part of pin and variable-capacity compressor |
| CN111075721A (en) * | 2019-12-26 | 2020-04-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body subassembly and variable volume compressor |
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| CN107476979A (en) * | 2017-08-10 | 2017-12-15 | 珠海格力节能环保制冷技术研究中心有限公司 | The assembly method of compressor, air conditioner and compressor |
| CN117846961B (en) * | 2024-03-08 | 2024-05-17 | 四川华油中蓝能源有限责任公司 | Variable-capacity mechanical pump for LNG production |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20180081778A (en) | 2018-07-17 |
| EP3392507B1 (en) | 2023-06-07 |
| EP3392507A4 (en) | 2019-07-24 |
| EP3392507A1 (en) | 2018-10-24 |
| KR102029610B1 (en) | 2019-10-07 |
| JP6609051B2 (en) | 2019-11-20 |
| JP2019500536A (en) | 2019-01-10 |
| WO2017101537A1 (en) | 2017-06-22 |
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Application publication date: 20160406 |