CN103410731B - Rotary compressor and freezing cycle device - Google Patents
Rotary compressor and freezing cycle device Download PDFInfo
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- CN103410731B CN103410731B CN201310335701.6A CN201310335701A CN103410731B CN 103410731 B CN103410731 B CN 103410731B CN 201310335701 A CN201310335701 A CN 201310335701A CN 103410731 B CN103410731 B CN 103410731B
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Abstract
The invention discloses a kind of rotary compressor and there is its freezing cycle device, the rotary compression mechanism section being built in the seal casinghousing that internal pressure is high pressure of rotary compressor includes：It is configured with the cylinder of compression chamber;Configure the piston in the compression chamber;The slide plate to reciprocatingly slide abutted with the piston；Drive the bent axle of the piston；In the cylinder, the slide plate chamber in the rearward end of the slide plate is configured；Configure the sealing plate at the slide plate chamber perforate end；The sealing plate makes the slide plate static after being deformed due to the pressure difference between the pressure of the housing and the pressure of the slide plate chamber.The rotary compressor with the simple and reliable static slide plate of method or can release the static of slide plate, simple in construction and reduce cost.
Description
Technical field
The present invention is slided with slide plate required on the capacity control rotary compressor applied to air conditioner and refrigerating plant etc.
Dynamic control technology is related.
Background technology
In the operating of compressor, make high speed it is reciprocating slide moment it is static and release it is static, make each cylinder compression
Chamber is as capacity control rotary compressor that is uncompressed or recovering to compress with carrying out running speed control by variable-frequency motor
Equally belong to high-end capacity control techniques, it is noticeable.
Patent document 1 (JP 2008-128231 variable capacity rotation compressors) and (the JP 2005-171848 of patent document 2
Freezing cycle device) what is represented is conventional slide plate action control technology, it is characterized in jointly：Slide plate cavity pressure follows in freezing
Switch between the high side pressure and low-pressure lateral pressure of ring, also, in order to control slide plate to act, eliminate sliding blade spring (reference
Patent document 3 (JP 1998-259789 rotating seal type compressors and freezing cycle device)).
If according to the publicity technology of patent document 1, in order to control slide plate to act, the extension of intermediate bearing and lower bearing
The pressure of the slide plate diversion cavity (slide plate chamber) sealed on part switches between compressor or the high pressure and low pressure of freeze cycle.
The present invention is also in compliance with this design concept.
Also, due between the high-pressure flow line and low pressure stream of the second vane slot upper shed caused pressure differential (Δ p),
So the side of the second slide plate is generally to compress vane slot, it is generally to play braking on the second slide plate in slide plate slip
The effect of power., can be with static slide plate if slide plate chamber switches to low pressure by this brake force.On the other hand, release quiet
Only state is that slide plate cavity pressure is switched to high pressure.At this moment, if power is eager to excel than above-mentioned brake force caused by slide plate cavity pressure
If, the second slide plate will start to slide.
The technical task of patent document 1 is to be moved during slide plate slides caused by friction between caused slide plate and vane slot
Power is lost.In addition, in order that slide plate is static, it is necessary to which pressure differential is set as the size more than certain.Also, because slide plate is static
In caused by from high-pressure flow line to the coolant leakage of slide plate chamber (low pressure), generate loss of refrigeration capacity.That is, because power damages
Lose or refrigerating capacity loses, the problem of compressor efficiency reduction can be produced.
If according to the publicity technology of patent document 2, it is characterized in that：Utilize threeway of the configuration on cylinder suction loop
Valve, cylinder chamber switch between high pressure or low pressure.Switched by this pressure, slide plate is static unless each for static or solution.Cause
This, need not implement to seal, as long as slide plate chamber is all right in high-pressure side under normal circumstances to slide plate chamber.But in order that slide plate is quiet
Only, it is necessary to be equipped with permanent magnet on slide plate chamber.For slide plate, this permanent magnet turns into braking under normal circumstances
Power.
Switched by the pressure of above-mentioned cylinder chamber to control the problem of slide plate sliding technology to be：Due on suction loop
The pressure loss caused by the triple valve of outfit, the phenomenon that refrigerating capacity reduces is produced, in addition, in order to be provided in narrow slide plate chamber
Above, it is necessary to purchase the rare-earth magnet of high price.In addition, this method can also turn into the brake force of slide plate.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, one object of the present invention
It is to propose a kind of rotary compressor, the rotary compressor with the simple and reliable static slide plate of method or can release the quiet of slide plate
Only, it is simple in construction and reduce cost.
It is another object of the present invention to propose a kind of freezing cycle device with above-mentioned rotary compressor.
Rotary compressor according to an embodiment of the invention, it is built in the seal casinghousing that internal pressure is high pressure
Rotary compression mechanism section include：It is configured with the cylinder of compression chamber；Configure the piston in the compression chamber；Supported with the piston
The slide plate to reciprocatingly slide connect；Drive the bent axle of the piston；In the cylinder, the cunning in the rearward end of the slide plate is configured
Piece chamber；Configure the sealing plate at the slide plate chamber perforate end；Pressure and the slide plate chamber of the sealing plate due to the housing
Pressure difference between pressure and make the slide plate static after being deformed.
Rotary compressor according to another embodiment of the invention, it is built in the seal casinghousing that internal pressure is high pressure
Interior rotary compression mechanism section possesses：Each it is equipped with the first cylinder and the second cylinder of compression chamber；Respectively described each
The piston configured on individual compression chamber；The slide plate to reciprocatingly slide abutted with each piston；Drive the song of described two pistons
Axle；In the second described cylinder, the slide plate chamber in the rearward end of the slide plate is configured；On the perforate end of this slide plate chamber,
The sealing plate being deformed due to the pressure difference between the pressure of the housing and the pressure of the slide plate chamber；Pass through the sealing plate
Deformation make the slide plate static.
According to the rotary compressor of the further embodiment of the present invention, outfit makes the pressure of the slide plate chamber in high-pressure side
The switching device switched between pressure and low-pressure lateral pressure；The pressure of the slide plate chamber can make institute in the low-pressure lateral pressure
It is static to state slide plate；The pressure of the slide plate chamber can release the static of the slide plate in the high side pressure.
The switching device is pressure switching valve.
Alternatively, the pressure switching valve is triple valve or four-way valve.
According to the rotary compressor of the further embodiment of the present invention, each opening relative on the slide plate chamber is provided in
The side or both sides of sealing plate on end are deformed so that the slide plate is static.
The sealing plate is the steel plate of flexible 0.02mm~0.5mm thickness ranges.
The sealing plate is shaped generally as rectangular flat board, and the approximate centre of the sealing plate is opened formed with circle
Mouthful.
The sealing plate deflection adjustment means will the sealing plate or in the openend of the slide plate chamber extremely
Implement on few side.
Specifically, closed with springy sealing plate in the upper and lower opening portion for storing the slide plate chamber of the rearward end of the slide plate of cylinder
Close.Slide plate chamber from high pressure switch to low pressure when, due to the effect of pressure differential, two sealing plates deform balling-up towards the inner side of slide plate chamber
Planar.Now, the rearward end of slide plate is clipped in remains stationary between sealing plate.Simultaneously as slide plate chamber is sealed by sealing plate
To maintain low pressure.Hereafter, when slide plate chamber switches to high pressure, sealing plate just not redeformation, so the inactive state of slide plate will solve
Remove, slide plate will start common reciprocatingly slide.
Rotary compressor according to embodiments of the present invention has the advantages that：
(1) can be static come static slide plate or releasing slide plate with simple, high reliability method.It is in addition, in order that sliding
The static pressure applied of piece, plate thickness or compression area by optimizing sealing plate etc. is easy to be adjusted.
(2) when slide plate chamber is in low pressure, sealing plate can be sealed along the shape of cylinder planar portions.In addition, sealing
Power increasing proportional to pressure differential.Therefore, compared with conventional art, be advantageous to prevent outside slide plate chamber to slide plate intracavitary portion
The leakage of high pressure refrigerant.
(3) sealingization of slide plate chamber is implemented with sealing plate of the configuration in the upper and lower opening portion of slide plate chamber.It is such as literary with patent
Offer 1 to compare, it is not necessary to the design alteration of main component, cost can be reduced.
(4) sealing plate is used as, can be with advantageous existing in service precision and alternating bending power and wear-resisting, cost
Sweden's steel.
A kind of freezing cycle device according to embodiments of the present invention, including：By the rotation described in the above embodiment of the present invention
Rotary compressor and condenser, expansion valve and evaporator.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the longitudinal section and simple freeze cycle inside rotary compressor according to a first embodiment of the present invention
Figure；
Fig. 2 is the compression mechanical part F of rotary compressor according to a first embodiment of the present invention longitudinal section；
Fig. 3 a and Fig. 3 b are the detailed figures of the cylinder (B) of rotary compressor according to a first embodiment of the present invention；
Fig. 4 a and Fig. 4 b are the sealing plate M of rotary compressor according to a first embodiment of the present invention detailed figures；
The group that Fig. 5 a and Fig. 5 b are the sealing plate M and cylinder (B) of rotary compressor according to a first embodiment of the present invention is stood
Figure；
Fig. 6 is the pattern P of the relations such as sealing plate M and the slide plate (B) of rotary compressor according to a first embodiment of the present invention
Operating figure；
Fig. 7 is the Mode S of the relations such as sealing plate M and the slide plate (B) of rotary compressor according to a first embodiment of the present invention
Static figure；
Fig. 8 a and Fig. 8 b are the detailed figures of the cylinder (B) of rotary compressor according to a second embodiment of the present invention；
Fig. 9 a and Fig. 9 b are the sealing plate M of rotary compressor according to a third embodiment of the present invention detailed figures；
Figure 10 a and Figure 10 b are the detailed figures of the cylinder (B) of rotary compressor according to a fourth embodiment of the present invention；
Figure 11 a and Figure 11 b are the sealing plate M of rotary compressor according to a fifth embodiment of the present invention detailed figures；
Figure 12 is the sealing plate M of rotary compressor according to a sixth embodiment of the present invention detailed figure.
Reference：
R, rotary compressor；F, compression mechanical part；H, motor section；ST, bent axle；W, surface modified surface；
2nd, housing；3rd, blast pipe；4th, suction hole；5th, pressure switching valve；
6th, pressure switching pipe；7th, air intake duct；
13a, cylinder (A)；13b, cylinder (B)；
14a, compression chamber (A)；14b, compression chamber (B)；
17a, piston (A)；17b, piston (B)；
18a, slide plate (A)；18b, slide plate (B)；
19a, slide plate chamber (A)；19b, slide plate chamber (B)；
20th, sliding blade spring；21st, cylinder plane；22nd, cylinder cast(ing) surface；23rd, vane slot；
25th, base bearing；26th, supplementary bearing；27th, retainer groove；28th, intermediate plate；
35th, air bleeding valve；M1, sealing plate；
40th, flat board；41st, mounting hole；42nd, elliptical aperture；43rd, Zhi Dong Bu ー；
M2, sealing plate；
50th, cross-drilled hole；51st, vertical hole；52nd, through slot；55th, it is surface-treated；
60th, pressure pin；61st, pin-and-hole
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or dark
Show that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint are relative
Importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be with bright
Show or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple " contain
Justice is two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
The rotary compressor of multiple embodiments according to a first aspect of the present invention is described below with reference to Fig. 1-Figure 12.
[embodiment 1]
Shown in Fig. 1 be capacity controlled rotary compressor R be by configure the motor section H of housing 2 after sealing, with
And the compression mechanical part F configured below motor section H is formed.The high pressure refrigerant discharged in blast pipe 3 passes through condenser E and expansion
Become low pressure refrigerant in evaporator E2 after valve V, be diverted in air intake duct (A) 7a and air intake duct (B) 7b, inhaled from reservoir A
Enter in each cylinder (A) 13a and cylinder (B) 13b.
The detailed construction of the compression mechanical part F for being integrally fixed at the internal diameter of housing 2 shown in Fig. 2.Compression mechanical part F is by cylinder
(A) 13a and cylinder (B) 13b and the intermediate plate 28, piston (A) 16a of the configuration on each cylinder and work of the cylinder are divided
(B) 16b, slide plate (A) 10a and slide plate (B) 10b are filled in, the bent axle K of two pistons is driven, supports bent axle K base bearing 25 and countershaft
Hold 26 compositions.In addition, the invention is characterized in that：It is provided in each upper and lower of slide plate chamber (B) 20b of slide plate (B) 10b rearward ends
Opening portion is closed by sealing plate M.
Be provided in the pressure switching valve 5 outside housing 2 and housing internal pressure identical high pressure (Pd) and with air intake duct (B) 7b
Pressure in identical low pressure (PS) form the power loop that enters continue.Also, connection switches from pressure switching valve 5 through excess pressure manages
Slide plate chamber (B) 20b output loop is reached after 6.This result, by pressure switching valve 5 slide plate chamber (B) 20b pressure in height
It can switch freely between pressure (Pd) and low pressure (PS).Further, it is possible to use the triple valve of pressure switching valve either four-way valve
Deng.
Embodiment 1, it is high pressure under normal circumstances in the operating of compressor, in slide plate chamber (A) 20a of the inside opening of housing 2
(Pd).Therefore, slide plate (A) 10a that rear end face is compressed by sliding blade spring 17 is to continue with what is slided under normal circumstances.Now, it is sliding
Piece chamber (B) 20b is if high pressure (Pd), and slide plate (B) 10b is to slide, therefore, because cylinder (A) 13a in its operating
It is to play compression jointly with cylinder (B) 13b, so rotary compressor R refrigerating capacity is 100% (hereinafter referred to as pattern
P)。
On the other hand, as described later, for slide plate chamber (B) if switching to low pressure (PS), slide plate (B) 10b can be static
In vane slot 23 (shown in Fig. 3 a and 3b) and slide plate chamber (B) 20b, while slide plate (B) 10b tip can be from piston (B) 16
Deviate from periphery.Therefore, cylinder (B) 13b becomes uncompressed operating, piston 16b is idle running.Thus obtain, rotary compressor R's is cold
Jelly ability is 50% (hereinafter referred to as Mode S).In addition, as cylinder (A) 13a with cylinder 13b discharge capacity is in embodiment 1.
The details of embodiment 1 is introduced below according to accompanying drawing.
Cylinder (B) 13b shown in Fig. 3 a and 3b is by forming the cylinder plane 21 of the plane of cylinder two, being formed in its periphery
Cylinder cast(ing) surface 22, the suction hole 4 and vane slot being open to being provided in compression chamber (B) 14b at the center of cylinder plane 21
23rd, with back-connected slide plate chamber (B) 20b of vane slot 23, slide plate chamber (B) 20b centre opening cross-drilled hole 50, in slide plate
2 pin-and-holes 61 of chamber (B) the 20b backs configuration in each cylinder plane 21 are formed.In addition, cross-drilled hole 50 is connection pressure switching pipe
6 (Fig. 2) hole.
Cylinder plane 21 is circular flat face by being each connected with supplementary bearing 26 and intermediate plate 28 and from the circular flat
The rectangular portion that face surrounds slide plate chamber (B) 20b extension is formed.The cylinder shape of embodiment 1 is due to similar to common rotation
The cylinder of rotary compressor, it is possible to borrow the cylinder.In addition, cylinder (A) 13a and cylinder (B) 13b shape are substantially
The same.
Shown in Fig. 4 a and Fig. 4 b is the detailed of sealing plate M and pressure pin 60.Sealing plate M is slightly rectangular flat board, has 2
Individual mounting hole 41.Circle shown in sealing plate M centre be slide plate chamber (B) 20b open circles, it is shown be to be located at sealing plate M
The probably position in center.Sealing plate M plate thickness is 0.02~0.3mm or so, can be used in flatness, elasticity and abrasion performance
Upper advantageous Sweden's steel plate (Q-tempering processing martensitic stainless steel), or Q-tempering processing carbon steel etc..The material
Feature be similar in valve block of the opening and closing in the compressor of the steam vent of compression chamber opening in running at high speed.
Fig. 5 a and Fig. 5 b are the figures in the over-assemble sealing plate M of each plane 21 of relative cylinder.The assembling of sealing plate be
Configure sealing plate M at slide plate chamber (B) 20b each upper and lower opening, by pin-and-hole 61 fixation pressure pin 60 complete.
Pass through the assembling, it can be ensured that the rear portion of sealing slide plate chamber (B) 20b and coupled vane slot 23.
Fig. 6 is the sectional view of cylinder (B) 13b after sealing plate group is stood.Because slide plate chamber (B) 20b pressure is and housing 2
Internal pressure it is the same be all high pressure (Pd), so slide plate (B) 10b is the slip in pattern P in slip.Now, St represents to slide
Piece (B) 10b path increment, Stmin represents that its top dead centre, Stmax represent lower dead center.When slide plate (B) 10b is in top dead centre,
Gap between slide plate the back end and slide plate chamber (B) 20b is set under normal circumstances to be of uniform thickness with slide plate (B) 10b, avoids sliding
Conflicting between piece the back end and slide plate chamber (B).
Each gap formed between slide plate (B) 10b upper and lower side and cylinder plane 21 is slide plate gap (C), upper and lower
Total backlash is as slide plate total backlash (2 × C), and slide plate total backlash (2 × C) is smaller, and coolant leakage is fewer, from compressor efficiency
It is favourable from the point of view of angle.But to consider the form error of cylinder and slide plate, group vertical deformation, piston operation error etc., each
Slide plate total backlash (2 × C) most scopes for being set in less than 16 μm under normal circumstances.
Shown in Fig. 7 is that slide plate chamber (B) 20b pressure is switched to low pressure from high pressure (Pd) by pressure switching valve 5
(Ps) moment.That is, slave pattern P switches to the moment of Mode S.If slide plate chamber (B) 20b is from if high pressure switches to low pressure,
Pressure differential Δ p (Pd-Ps) will be produced between sealing plate M outside (Pd) and inner side (Ps).
Because coffer M is flexible thin plate, sealing plate is sealed due to shapes of the Δ p along cylinder plane 21.
In addition, sealing plate M middle body is towards the Direction distortion in slide plate chamber (B) into dome shape.Therefore, when the slide plate in high-speed slide
(B) when 210b is pressed onto the position of top dead centre (Stmin) on piston (B) 16b, it is jammed and keeps quiet between 2 sealing plate M
Only.Meanwhile slide plate (B) 10b front end is deviate from from piston (B) 16b periphery.
Once if static slide plate (B) 10b, because compression chamber (B) 14b pressure will become low pressure (Ps), so pressure
The active force that power brings slide plate (B) 10b is zero.Therefore, slide plate (B) 10b is to be clipped between 2 sealing plate M to continue to keep quiet
Only.On the other hand, piston (B) 16b dallies in compression chamber (B) 14b.Therefore, slave pattern P switches to the operating of Mode S.Mould
In formula S operating, slide plate chamber (B) 20b pressure is low pressure (Ps), and by pressure differential, (Δ p) is pressed sealing plate M with cylinder plane 21
Tightly, prevent the high pressure refrigerant at from sealing plate M outside to slide plate chamber (B) 20b from leaking.
Secondly, as by pressure switching valve 5 slide plate chamber (B) 20b pressure from low pressure (Ps) switches to high pressure (Pd)
Words, because sealing plate M external and internal pressure is poor, (Δ p) becomes 0, and sealing plate M deformation will solve, and slide plate (B) 10b's is static
It will release.Simultaneously as slide plate (B) 10b to fly out abuts with piston (B) 16b periphery, so cylinder (B) 13b recovers pressure
Contracting acts on.That is, slave pattern S switches the operating for the P that becomes the mode.
Now, due to pressure differential caused by sealing plate M interior outside, (Δ p) is 0, and sealing plate M is can not to be put down with cylinder
Face 21 compresses.But now slide plate chamber (B) 20b is high pressure, sealing plate M need not be used to seal.It follows that sealing plate M spy
Sign is：Only when slide plate chamber (B) 20b is low pressure, slide plate chamber (B) 20b can be sealed, and slide plate (B) 10b can be made quiet
Only.
In Mode S, 2 sealing plate M deflection and clamping slide plate (B) 10b active force, also compress sealing plate M
(Δ p) is proportional for active force in cylinder plane 21 and slide plate chamber (B) 20b effective vent area and pressure differential.But
Sealing plate M rigidity (or spring constant) is certain.
As an example, slide plate chamber (B) 20b internal diameter be set to 8mm, pressure differential (if Δ p) is set to 1Mpa, (Δ p) institutes
It is about 50N (5kgf) to produce to sealing plate M active force.Such as：Due to 50N active force, what 15 μm of sealing plate M generations deformed
Words, the sealing plate M of upper and lower 2 total deformation is 30 μm.But when, now, 2 upper and lower sealing plate M use two one
The sealing plate of sample.
But because when 2 sealing plate M total deformation reaches slide plate total backlash (2 × C), sealing plate M deformation is just
It can stop, so 2 sealing plate M total deformation and slide plate total backlash (2 × C) are identicals.As described above, when slide plate is total
When gap (2 × C) is 16 μm, sealing plate M total deformation is 16 μm, and the deflection of single sealing plate is about 8 μm.
Therefore, the invention is characterized in that：Because slide plate (B) 10b upper and lower side becomes the retainer of sealing plate M deformation,
Sealing plate M practical distortion amount can be determined according to the value of slide plate total backlash (2 × C).Sealing plate M deflection will not be excessive.
Therefore, because sealing plate M flatness maintains a certain amount of scope, the high pressure refrigerant in housing is low pressure, be can be prevented from
To slide plate chamber (B) 20b leakage problem.
If using this feature, reducing sealing plate M rigidity in advance, also have no relations greatly even if deformation quantitative change.Knot
Fruit, even if (for Δ p) under the conditions of less, sealing plate M can also make slide plate (B) 10b static to pressure differential during low load operation etc.
And it may insure sufficient deflection.Such as：Even if the late-late cooling operation load of air conditioner becomes minimum operating condition
Under (Δ p=0.5Mpa is such as the following), also can slave pattern P switch to Mode S.
In addition, the side openend of slide plate chamber by bearing or intermediate plate come in the design closed, opposite side openend
Can be by being equipped with sealing plate M come static slide plate.But with 1 sealing plate M come in the design of static slide plate, it is necessary to pass through
(Δ p) increases sealing plate M deflection to pressure differential.
[embodiment 2]
Embodiment 2 is on ensuring the sealing property between sealing plate M and cylinder plane 21, the change with increase sealing plate M
Shape amount increases relevant to the technology of the static active forces of slide plate (B) 10b.Embodiment 2 shown in Fig. 8 a and Fig. 8 b, in order to expand slide plate
Chamber (B) 20b effective vent area, the additional configuration circumferential groove 30 on the outside of slide plate chamber (B) 20b opening portion.As a result, even if
Under less Δ p, sealing plate also ensures that sufficient deflection and static active force.In addition, the groove depth of circumferential groove 30
Little or nothing, as long as such as 0.1mm cans.In addition, if increasing the area, deflection can increase.
[embodiment 3]
Embodiment 3 is to reach the means of purpose in the same manner as in Example 2.Sealing plate M shown in Fig. 9 a and Fig. 9 b, unilateral
Thin groove 31 is configured in plane, substantially increases slide plate chamber (B) 20b effective vent area, other part reduces sealing plate M's
Thickness, increase deflection.Sealing plate M planar side is configured in cylinder plane 21, sealing plate M makes thin groove 31 exist when configuring
High-pressure side (Pd) opening.In addition, the center of thin groove 31 and the center of slide plate chamber (B) 20b openings need not must keep one
Cause.
The sealing plate M of embodiment 3 is disposed on slide plate chamber (B) 20b top and bottom in the same manner as in Example 1, if must
If wanting, wherein side can be only fitted to.In addition, for example changing the segment thickness of thin groove 31, or number is configured towards center position
Individual groove etc., if necessary, as long as optimizing the shape of thin groove 31, it is possible to obtain bigger effect.In addition, thin groove 31 can
To be processed by being machined or being chemically treated.
[embodiment 4]
That shown in Figure 10 a and Figure 10 b is cylinder (B) 13b, the additional configuration circular trough 32 around slide plate chamber (B) 20b.
Slide plate chamber (B) 20b and circular trough 32 in Mode S are in low pressure (Ps), even if sealing plate M deflection increase, can also enter
One step ensures the sealing between sealing plate M and cylinder plane 21.In addition, as long as groove depth has it is sufficient that 0.1mm.
[embodiment 5]
Sealing plate M shown in Figure 11 a and Figure 11 b is made up of 2 sealing plates, i.e., close including the first sealing plate M1 and second
Shrouding M2.First sealing plate M1 the second sealing plate of thickness ratio M2 thickness of slab is thin.Additional 4 sealing plates on first sealing plate M1
Hole (B) 45b.On the other hand, the second sealing plate M2 additional configurations 1 on the position consistent with slide plate chamber (B) 20b immediate vicinity
Individual seal plate bore (A) 45a.In terms of assembling to cylinder (B) 13b, overlapping first sealing plate M1 and second is close in the same manner as in Example 1
Shrouding M2 is simultaneously fixed on above cylinder plane 21 by pressure pin 60.Now, thin the first sealing plate M1 configurations of thickness of slab are existed
The side of cylinder plane 21.
In Mode S, because the first sealing plate M1 4 seal plate bore (B) 45b pressure is in low pressure or close to low
The pressure of pressure, so the first sealing plate M1 and the second sealing plate M2 are to compress.Now, thickness of slab big the second sealing plate M2 and plate
Thick the first small sealing plate M1 is integrated and compressed with cylinder plane 21.
Also, due to the second sealing plate M2 seal plate bore (A) 45a, the first sealing plate M1 central part forms high pressure.Plate
Thick the first small sealing plate M1 forms big spherical shape towards direction in the middle part of slide plate chamber (B) 20b.Effect due to more than, without sacrificial
Domestic animal and the sealing force of cylinder plane 21, slide plate (B) 10b static force can also be improved.In addition, the first sealing plate M1 and second is close
Shrouding M2 thickness of slab, the configuration for also having seal plate bore (A) 45a and seal plate bore (B) 45b and aperture, quantity, can enter according to necessity
Row optimization.
[embodiment 6]
Embodiment 6 shown in Figure 12, in order to increase the friction of the sealing plate M in Mode S and slide plate (B) 10b contact surface
Coefficient, at least one contact surface in sealing plate M and slide plate (B) 10b is entered by the chemical treatment or mechanical treatment of corrosion etc.
Row Surface Machining.Figure 12 A are the designs for the entire surface for handling sealing plate M, and Figure 12 B are that processing includes the contact with slide plate (B) 10b
The scope in face.Due to coefficient of friction can be increased by the means, it more can ensure that slide plate (B) 10b is static.In addition, shown in Figure 12 A
Be sealing plate M surface, protect oily effect due to that can improve, it is possible to further improve sealing plate M and cylinder plane 21
Between sealing effectiveness.
It is close between slide plate (B) 10b that sealing plate M above is brought static technology and sealing plate M and cylinder plane 21
Gas improving environment can between the publicity technology in embodiment 1 to embodiment 6 independent assortment, obtain synergistic action effect.
The slide plate of publicity in the present invention slides static technology, is not only applicable to duplex-cylinder rotary compressor, can also answer extensively
For 2 stage compression type rotary compressors, there are single cylinder rotary compressor and opening rotary compressor.In addition, above-mentioned rotation
Rotary compressor can not only carry air conditioner, can also be mounted in the equipment such as refrigerating plant, water heater.
To sum up, had the advantages that according to the rotary compressor of the present invention：
(1) can be static come static slide plate (B) or releasing slide plate (B) with simple, high reliability method.Slide plate (B)
Static middle sealing plate M maximum deformation quantity is determined by the clearance C between cylinder planar portions 21 and slide plate (B), in 8 μ
Below m scope.In addition, in order that slide plate (B) static pressure applied, by optimize sealing plate M plate thickness or by
Pressure surface product etc. is easy to be adjusted.
(2) when slide plate chamber (B) is in low pressure, sealing plate M can be sealed along the shape of cylinder planar portions.In addition,
(the proportional increasings of Δ p) of sealing force and pressure differential.Therefore, compared with conventional art, be advantageous to prevent from slide plate chamber (B) outside
The leakage of the high pressure refrigerant of (low pressure) inside (high pressure) to slide plate chamber (B).
(3) sealingization of slide plate chamber (B) is implemented with sealing plate M of the configuration in the upper and lower opening portion of slide plate chamber (B).Such as with
Patent document 1 compares, it is not necessary to the design alteration of main component, can reduce cost.
(4) sealing plate M is used as, can be with advantageous existing in service precision and alternating bending power and wear-resisting, cost
Sweden's steel.
The freezing cycle device of embodiment according to a second aspect of the present invention, including：By implementing according to a first aspect of the present invention
Rotary compressor, condenser, expansion valve and evaporator described in example.Freezing cycle device wherein according to embodiments of the present invention
Other form such as evaporator and condenser and operation be all for those of ordinary skills it is known, here
It is not described in detail.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment or example of the present invention.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (5)
1. a kind of rotary compressor, it is characterised in that it is built in the rotary pressure in the seal casinghousing that internal pressure is high pressure
Contracting mechanism part possesses：
Each it is equipped with the first cylinder and the second cylinder of compression chamber；
The piston configured respectively on each compression chamber；
The slide plate to reciprocatingly slide abutted with each piston；
Drive the bent axle of described two pistons；
In the second described cylinder, the slide plate chamber in the rearward end of the slide plate is configured；
On the perforate end of this slide plate chamber, because the pressure difference between the pressure of the housing and the pressure of the slide plate chamber produces
The sealing plate of deformation；
Make the slide plate static by the deformation of the sealing plate, the sealing plate for superposition two and including the first sealing plate
With the second sealing plate, first sealing plate is located on the second cylinder, and the thickness of first sealing plate is close less than described second
The thickness of shrouding, first sealing plate are provided with the first seal plate bore, attached at the center of slide plate chamber on second sealing plate
Near position is provided with the second seal plate bore；
Wherein, being equipped with makes the switching device that the pressure of the slide plate chamber switches between high side pressure and low-pressure lateral pressure；
The pressure of the slide plate chamber can make the slide plate static in the low-pressure lateral pressure；
The pressure of the slide plate chamber can release the static of the slide plate in the high side pressure.
2. rotary compressor according to claim 1, it is characterised in that the switching device is pressure switching valve.
3. rotary compressor according to claim 2, it is characterised in that the pressure switching valve is triple valve or four-way
Valve.
4. according to the rotary compressor any one of claim 1-3, it is characterised in that
The both sides for the sealing plate being provided on each openend relative on the slide plate chamber are deformed so that the slide plate is static.
A kind of 5. freezing cycle device, it is characterised in that including：According to the rotary compression any one of claim 1-4
Machine, condenser, expansion valve and evaporator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310335701.6A CN103410731B (en) | 2013-08-02 | 2013-08-02 | Rotary compressor and freezing cycle device |
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|---|---|---|---|
| CN201310335701.6A CN103410731B (en) | 2013-08-02 | 2013-08-02 | Rotary compressor and freezing cycle device |
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| Publication Number | Publication Date |
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| CN103410731A CN103410731A (en) | 2013-11-27 |
| CN103410731B true CN103410731B (en) | 2018-02-06 |
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| CN201310335701.6A Active CN103410731B (en) | 2013-08-02 | 2013-08-02 | Rotary compressor and freezing cycle device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836182A (en) * | 2018-08-17 | 2020-02-25 | 广东美芝制冷设备有限公司 | Capacity control type rotary compressor and refrigeration cycle device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203500007U (en) * | 2013-08-02 | 2014-03-26 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigerating cycle device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61104189A (en) * | 1984-10-25 | 1986-05-22 | Mitsubishi Electric Corp | Rotary electric compressor of closed vertical type |
| JPS63105786U (en) * | 1986-12-27 | 1988-07-08 | ||
| JPH04143483A (en) * | 1990-10-05 | 1992-05-18 | Daikin Ind Ltd | Compressor with rolling piston |
| JPH0579483A (en) * | 1991-09-18 | 1993-03-30 | Daikin Ind Ltd | Multicylinder rotary compressor |
| TW200530509A (en) * | 2004-03-15 | 2005-09-16 | Sanyo Electric Co | Multicylinder rotary compressor and compressing system and refrigerating unit with the same |
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2013
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203500007U (en) * | 2013-08-02 | 2014-03-26 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigerating cycle device |
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