CN103410731A - Rotary compressor and refrigeration cycle device - Google Patents
Rotary compressor and refrigeration cycle device Download PDFInfo
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- CN103410731A CN103410731A CN2013103357016A CN201310335701A CN103410731A CN 103410731 A CN103410731 A CN 103410731A CN 2013103357016 A CN2013103357016 A CN 2013103357016A CN 201310335701 A CN201310335701 A CN 201310335701A CN 103410731 A CN103410731 A CN 103410731A
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Abstract
The invention discloses a rotary compressor and a refrigeration cycle device comprising the same. A rotary compression mechanism of the rotary compressor, which is internally arranged inside a sealing casing with high internal pressure, comprises a cylinder configured with a compression chamber, a piston configured in the compression chamber, a sliding sheet sliding in a reciprocating way and propped against the piston, a crankshaft driving the piston, a sliding sheet chamber formed in the rear end part of the sliding sheet in the cylinder, and a sealing plate configured at the opening end of the sliding sheet chamber, wherein the sealing plate generates deformation due to pressure difference between pressures of the casing and the sliding sheet chamber to enable the sliding sheet to be static. The situation that the sliding sheet is enabled to be static or the static sliding sheet slides in a reciprocating way is realized with a simple and reliable method by the rotary compressor, the structure is simple and the cost is reduced.
Description
Technical field
Slide plate slip control technique required on the present invention and the capacity control rotary compressor that is applied to air conditioner and refrigeration plant etc. is relevant.
Background technique
In the running of compressor, make the reciprocating slip of high speed moment static and remove static, make each cylinder compression chamber as non-compression or the capacity control rotary compressor that recovers compression with undertaken by variable-frequency motor that running speed control is the same belongs to high-end volume controlled technology, noticeable.
Patent documentation 1(JP 2008-128231 variable capacity rotation compressor) and patent documentation 2(JP 2005-171848 freezing cycle device) representative is slide plate action control technology in the past, its common feature is: the slide plate cavity pressure switches between the high side pressure of freeze cycle and low-pressure lateral pressure, and, in order to control the slide plate action, omitted sliding blade spring (with reference to patent documentation 3(JP 1998-259789 rotating seal type compressor and freezing cycle device)).
If according to the publicity technology of patent documentation 1, in order to control slide plate action, the pressure of the slide plate diversion cavity sealed on the extension of intermediate bearing and lower bearing (slide plate chamber) is switched between the high pressure of compressor or freeze cycle and low pressure.The present invention also follows this design concept.
And, due to the pressure difference produced between the high pressure stream in the second vane slot upper shed and low pressure stream (Δ p), so the side of the second slide plate is generally to compress vane slot, on the second slide plate, be the effect of playing braking force usually during slide plate slides.By this braking force, the slide plate chamber switches to low pressure, can static slide plate.On the other hand, removing state of rest is that the slide plate cavity pressure is switched to high pressure.At this moment, if the power that the slide plate cavity pressure causes is more eager to excel in whatever one does than above-mentioned braking force, the second slide plate will start to slide.
The technical task of patent documentation 1 is the slide plate that produces during slide plate slides and the friction between vane slot and the power loss that causes.In addition, static in order to make slide plate, must be set as certain above size to pressure difference.And the coolant leakage from the high pressure stream to slide plate chamber (low pressure) due to the static middle generation of slide plate, produced loss of refrigeration capacity.That is to say, due to power loss or refrigerating capacity loss, can produce the problem that compressor efficiency reduces.
If the publicity technology according to patent documentation 2 is characterized in that: utilize the three-way valve, the cylinder chamber that are configured on cylinder suction loop to switch between high pressure or low pressure.By the switching of this pressure, static or to remove each slide plate static.Therefore, need not implement sealing to the slide plate chamber, as long as the slide plate chamber is generally all right in high pressure side.But, static in order to make slide plate, be necessary to be equipped with permanent magnet on the slide plate chamber.For slide plate, this permanent magnet generally becomes braking force.
The problem that pressure by above-mentioned cylinder chamber switches to control the slide plate sliding technology is: due to the pressure loss that is sucking the three-way valve that is equipped with on loop and cause, produce the phenomenon that refrigerating capacity reduces, in addition, in order to be provided on narrow slide plate chamber, need the rare-earth magnet of buying high price.In addition, this method also can become the braking force of slide plate.
Summary of the invention
The present invention is intended to solve at least one of technical problem existed in prior art.For this reason, one object of the present invention is to propose a kind of rotary compressor, and described rotary compressor can or be removed the static of slide plate with the static slide plate of simple and reliable method, simple in structure and reduced cost.
Another object of the present invention is to propose a kind of freezing cycle device with above-mentioned rotary compressor.
Rotary compressor according to an embodiment of the invention, its rotary compressor structure section be built in the seal casinghousing that internal pressure is high pressure comprises: the cylinder that disposes compression chamber; Be configured in the piston of described compression chamber; The slide plate reciprocatingly slided with described piston butt; Drive the bent axle of described piston; In described cylinder, be configured in the slide plate chamber of the rearward end of described slide plate; Be configured in the sealing plate of this slide plate chamber perforate end; Described sealing plate is due to the pressure reduction between the pressure in the pressure of described housing and described slide plate chamber and make described slide plate static after producing distortion.
Rotary compressor according to another embodiment of the invention, its rotary compressor structure section be built in the seal casinghousing that internal pressure is high pressure possesses: the first cylinder and the second cylinder that all dispose separately compression chamber; The piston configured on described each compression chamber respectively; The slide plate reciprocatingly slided with described each piston butt; Drive the bent axle of described two pistons; In described the second cylinder, be configured in the slide plate chamber of the rearward end of described slide plate; On the perforate end in this slide plate chamber, due to the pressure reduction between the pressure in the pressure of described housing and described slide plate chamber, produce the sealing plate of distortion; By described sealing plate distortion make described slide plate static.
According to further embodiment's of the present invention rotary compressor, outfit is switched the pressure in described slide plate chamber between high side pressure and low-pressure lateral pressure COMM communication; The pressure in described slide plate chamber, when described low-pressure lateral pressure, can make described slide plate static; The pressure in described slide plate chamber, when described high side pressure, can be removed the static of described slide plate.
Described COMM communication is the pressure switching valve.
Alternatively, described pressure switching valve is three-way valve or four-way valve.
According to further embodiment's of the present invention rotary compressor, be provided in sealing plate on each opening end relative on described slide plate chamber a side or both sides produce distortion so that described slide plate is static.
Described sealing plate is the steel plate of resilient 0.02mm ~ 0.5mm thickness range.
Described sealing plate forms roughly rectangular flat board, and described sealing plate the substantial middle place be formed with circular open.
Described sealing plate amount of deformation adjustment means at least one side, implement at described sealing plate or in the opening end in described slide plate chamber.
The upper and lower opening section in slide plate chamber of rearward end of particularly, taking in the slide plate of cylinder closes with sealing plate springy.When the slide plate chamber switched to low pressure from high pressure, due to the effect of pressure difference, two sealing plates were deformed into spherical shape towards the inboard in slide plate chamber.Now, the rearward end of slide plate keeps static between being clipped in sealing plate.Simultaneously, because the slide plate chamber is to seal to maintain low pressure by sealing plate.After this, when the slide plate chamber switches to high pressure, just not redeformation of sealing plate, so the state of rest of slide plate will be removed, slide plate will start common reciprocatingly sliding.
According to the rotary compressor of the embodiment of the present invention, have following beneficial effect:
(1) can carry out static slide plate or remove slide plate static by method simple, high reliability.In addition, in order to make the static institute of slide plate applied pressure, by optimize sealing plate plate thickness or compression area etc. be easy to adjust.
When (2) the slide plate chamber was in low pressure, sealing plate can seal along the shape of cylinder planar surface portion.In addition, the proportional increasing of sealing force and pressure difference.Therefore, compare with conventional art, be conducive to prevent the leakage of the high pressure refrigerant from outside, slide plate chamber to inside, slide plate chamber.
(3) sealingization in slide plate chamber is implemented with the sealing plate of the upper and lower opening section that is configured in the slide plate chamber.For example with patent documentation 1, compare, do not need the design alteration of main component, can reduce costs.
(4) as sealing plate, can service precision and alternating bending power and wear-resisting, cost on existing Sweden's steel of having had superiority.
A kind of freezing cycle device according to the embodiment of the present invention comprises: by the rotary compressor described in the above embodiment of the present invention and condenser, expansion valve and vaporizer.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
The accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding embodiment's description, becoming in conjunction with following accompanying drawing, wherein:
Fig. 1 is according to the longitudinal section of the rotary compressor inside of first embodiment of the invention and simple refrigeration cycle diagram;
Fig. 2 is the longitudinal section according to the compression mechanical part F of the rotary compressor of first embodiment of the invention;
Fig. 3 a and Fig. 3 b are the details drawings according to the cylinder (B) of the rotary compressor of first embodiment of the invention;
Fig. 4 a and Fig. 4 b are the details drawings according to the sealing plate M of the rotary compressor of first embodiment of the invention;
Fig. 5 a and Fig. 5 b are according to the vertical figure of the group of the sealing plate M of the rotary compressor of first embodiment of the invention and cylinder (B);
Fig. 6 is the running figure according to the pattern P of the relations such as the sealing plate M of the rotary compressor of first embodiment of the invention and slide plate (B);
Fig. 7 is the static figure according to the Mode S of the relations such as the sealing plate M of the rotary compressor of first embodiment of the invention and slide plate (B);
Fig. 8 a and Fig. 8 b are the details drawings according to the cylinder (B) of the rotary compressor of second embodiment of the invention;
Fig. 9 a and Fig. 9 b are the details drawings according to the sealing plate M of the rotary compressor of third embodiment of the invention;
Figure 10 a and Figure 10 b are the details drawings according to the cylinder (B) of the rotary compressor of fourth embodiment of the invention;
Figure 11 a and Figure 11 b are the details drawings according to the sealing plate M of the rotary compressor of fifth embodiment of the invention;
Figure 12 is the details drawing according to the sealing plate M of the rotary compressor of sixth embodiment of the invention.
Reference character:
R, rotary compressor; F, compression mechanical part; H, motor section; ST, bent axle; W, surface modified surface;
2, housing; 3, outlet pipe; 4, suction port; 5, pressure switching valve;
6, pressure switching pipe; 7, sucking pipe;
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);
20, sliding blade spring; 21, cylinder plane; 22, cylinder casting surface; 23, vane slot;
25, main bearing; 26, supplementary bearing; 27, retainer groove; 28, intermediate plate;
35, outlet valve; M1, sealing plate;
40, flat board; 41, mounting hole; 42, elliptical aperture; 43, Zhi Dong Bu ー;
M2, sealing plate;
50, cross-drilled hole; 51, vertical hole; 52, through slot; 55, surface treatment;
60, pressure pin; 61, pin-and-hole
Embodiment
Below describe embodiments of the invention in detail, described embodiment's example is shown in the drawings, and wherein same or similar label means same or similar element or the element with identical or similar functions from start to finish.Below by the embodiment who is described with reference to the drawings, be exemplary, only be used to explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " vertically ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " be only be used to describing purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characteristics.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, except as otherwise noted, the implication of " a plurality of " is two or more.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be done broad understanding, for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also to be electrically connected to; Can be directly to be connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand above-mentioned term concrete meaning in the present invention.
Below with reference to Fig. 1-Figure 12, the rotary compressor of a plurality of embodiments according to first aspect present invention is described.
[embodiment 1]
Shown in Figure 1 is, and capacity controlled rotary compressor R is the motor section H that is configured in the housing 2 after sealing and the compression mechanical part F that is configured in below motor section H, consists of.The high pressure refrigerant of discharging in outlet pipe 3 becomes low pressure refrigerant in vaporizer E2 after condenser E and expansion valve V, be diverted to sucking pipe (A) 7a and sucking pipe (B) 7b from liquid-storage container A, is inhaled in each cylinder (A) 13a and cylinder (B) 13b.
Shown in Figure 2 is the detailed construction that is fixed on the compression mechanical part F of housing 2 internal diameters.Compression mechanical part F be by cylinder (A) 13a and cylinder (B) 13b and divide this cylinder intermediate plate 28, be configured in piston (A) 16a on each cylinder and piston (B) 16b, slide plate (A) 10a and slide plate (B) 10b, the bent axle K that drives two pistons, the main bearing 25 of supporting bent axle K and supplementary bearing 26 form.In addition, feature of the present invention is: each upper and lower opening section that is provided in slide plate chamber (B) 20b of slide plate (B) 10b rearward end closes by sealing plate M.
Be provided in the outer pressure switching valve 5 of housing 2 and housing high pressure (Pd) identical in pressing and with the pressure of sucking pipe (B) 7b in the power loop that enters of identical low pressure (PS) formation continue.And, connect and from pressure switching valve 5, arrive the output loop of slide plate chamber (B) 20b after excess pressure switching pipe 6.This result, can switch the pressure of slide plate chamber (B) 20b freely by pressure switching valve 5 between high pressure (Pd) and low pressure (PS).In addition, three-way valve that can the working pressure switching valve or four-way valve etc.
On the other hand, as described later, slide plate chamber (B) if the low pressure of switching to (PS), slide plate (B) 10b can be still in shown in vane slot 23(Fig. 3 a and 3b) and slide plate chamber (B) 20b in, simultaneously the tip of slide plate (B) 10b can be deviate from from the periphery of piston (B) 16.Therefore, cylinder (B) 13b becomes non-compression operation, piston 16b is idle running.Obtain thus, the refrigerating capacity of rotary compressor R is that 50%(is hereinafter referred to as Mode S).In addition, in embodiment 1, the discharge capacity of cylinder (A) 13a and cylinder 13b is the same.
Below introduce with reference to the accompanying drawings embodiment 1 details.
Cylinder shown in Fig. 3 a and 3b (B) 13b is by the cylinder plane 21 that forms cylinder two planes, at cylinder casting surface 22 that its periphery forms, to the suction port 4 of compression chamber (B) the 14b opening that is provided in 21 centers, cylinder plane and vane slot 23, with the back-connected slide plate of vane slot 23 chamber (B) 20b, forms at the cross-drilled hole 50 of the centre opening of slide plate chamber (B) 20b, 2 pin-and-holes 61 that are configured at 20b back, slide plate chamber (B) on each cylinder plane 21.In addition, cross-drilled hole 50 is Bonding pressure switching pipe 6(Fig. 2) hole.
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, 2 mounting holes 41 are arranged.Circle shown in the centre of sealing plate M be slide plate chamber (B) 20b open circles, shown in be the position that is positioned at the general central authorities of sealing plate M.The plate thickness of sealing plate M is 0.02～0.3mm left and right, can use the Sweden's steel plate (Q-tempering processing martensitic stainless steel) had superiority on planeness, elasticity and abrasion performance, or Q-tempering is processed carbon steel etc.The feature class of this material is similar at the valve block of middle switching in the compressor of the exhaust port of compression chamber opening that run up.
Fig. 5 a is the figure of assembling sealing plate M on each plane 21 of relative cylinder with Fig. 5 b.Sealing plate assembling be at each upper and lower opening place of slide plate chamber (B) 20b configuration sealing plate M, by fixation pressure pin 60 on pin-and-hole 61, complete.By this assembling, can guarantee to seal the rear portion of slide plate chamber (B) 20b and coupled vane slot 23.
Fig. 6 is the sectional view of cylinder (B) 13b after the sealing plate group is stood.Due to the pressure of slide plate chamber (B) 20b be interior pressure with housing 2 the same be all high pressure (Pd), so slide plate (B) 10b, in sliding, is in the slip in pattern P.Now, St means that path increment, the Stmin of slide plate (B) 10b mean that its top dead center, Stmax mean lower dead center.When slide plate (B) 10b was in top dead center, the gap between slide plate the back end and slide plate chamber (B) 20b was generally set and being of uniform thickness of slide plate (B) 10b, and avoided conflicting between slide plate the back end and slide plate chamber (B).
Each gap formed between the upper and lower end of slide plate (B) 10b and cylinder plane 21 is slide plate gap (C), using upper and lower total backlash as slide plate total backlash (2 * C), (2 * C) is less, and coolant leakage is just fewer, is favourable from the angle of compressor efficiency for the slide plate total backlash.But, consider the form error, the vertical distortion of group, piston operation error of cylinder and slide plate etc., (2 * C) the most scopes that are set in below 16 μ m generally of slide plate total backlash separately.
Shown in Figure 7 is, by pressure switching valve 5, the pressure of slide plate chamber (B) 20b is switched to the moment of low pressure (Ps) from high pressure (Pd).That is, from pattern P, switch to the moment of Mode S.If slide plate chamber (B) 20b switches to low pressure from high pressure, will produce pressure difference Δ p(Pd-Ps between the outside of sealing plate M (Pd) and inboard (Ps)).
Because coffer M is resilient thin plate, sealing plate is due to Δ p seals along the shape on cylinder plane 21.In addition, the middle body of sealing plate M becomes spherical shape towards the Direction distortion in slide plate chamber (B).Therefore, when the slide plate in high-speed slide (B) 210b is pressed onto the position of top dead center (Stmin) on by piston (B) 16b, is jammed and between 2 sealing plate M, keeps static.Simultaneously, the front end of slide plate (B) 10b is deviate from from the periphery of piston (B) 16b.
In case static slide plate (B) 10b, because the pressure of compression chamber (B) 14b will become low pressure (Ps), so press belt is zero to the active force of slide plate (B) 10b.Therefore, slide plate (B) 10b is clipped between 2 sealing plate M and continues to keep static.On the other hand, piston (B) 16b dallies in compression chamber (B) 14b.Therefore, from pattern P, switch to the running of Mode S.In the running of Mode S, the pressure of slide plate chamber (B) 20b is low pressure (Ps), and sealing plate M compresses by pressure difference (Δ p) and cylinder plane 21, prevents from the high pressure coolant leakage of the outside to slide plate chamber (B) 20b of sealing plate M.
Secondly, if by pressure switching valve 5, the pressure of slide plate chamber (B) 20b switched to the words of high pressure (Pd) from low pressure (Ps), because the external and internal pressure of sealing plate M poor (Δ p) becomes 0, the distortion of sealing plate M will solve, static will the releasing of slide plate (B) 10b.Simultaneously, due to the periphery butt of the slide plate flown out (B) 10b and piston (B) 16b, so cylinder (B) 13b recovers compression.That is, from Mode S, switch to the running of pattern P.
Now, the pressure difference (Δ p) produced due to the interior outside of sealing plate M is 0, and sealing plate M can't compress with cylinder plane 21.But now slide plate chamber (B) 20b is high pressure, need not seal with sealing plate M.Draw thus, the feature of sealing plate M is: only have when slide plate chamber (B) 20b is low pressure, can seal slide plate chamber (B) 20b, and can make slide plate (B) 10b static.
In Mode S, the active force of the amount of deformation of 2 sealing plate M and clamping slide plate (B) 10b, make sealing plate M be pressed on effective vent area and the pressure difference (Δ p) of active force on cylinder plane 21 and slide plate chamber (B) 20b proportional in addition.But the rigidity of sealing plate M (or spring constant) is certain.
As an example, the internal diameter of slide plate chamber (B) 20b be made as 8mm, pressure difference (Δ p) is made as 1Mpa, (Δ p) generation is about 50N(5kgf to the active force of sealing plate M).For example: due to the active force of 50N, sealing plate M produces 15 μ m distortion, and the total deformation of the sealing plate M of upper and lower 2 is 30 μ m.But the time, now, what 2 upper and lower sealing plate M were used is two the same sealing plates.
But (2 * C) time, the distortion of sealing plate M will stop, and (2 * C) is identical so the total deformation of 2 sealing plate M is with the slide plate total backlash because the total deformation as 2 sealing plate M is reached the slide plate total backlash.As described above, when the slide plate total backlash (2 * C) while being 16 μ m, and the total deformation of sealing plate M is 16 μ m, single sealing plate amount of deformation be about 8 μ m.
Therefore, feature of the present invention is: due to the upper and lower end of slide plate (B) 10b, become the retainer of the distortion of sealing plate M, and can (2 * C) value decides the practical distortion amount of sealing plate M according to the slide plate total backlash.The amount of deformation of sealing plate M can be not excessive.Therefore, because the planeness of sealing plate M maintains a certain amount of scope, the high pressure refrigerant in housing is low pressure, is the leakage problem that can prevent slide plate chamber (B) 20b.
If utilize this feature, the rigidity of advance reduction sealing plate M, even the distortion quantitative change greatly also has no relations.As a result, though the pressure difference (Δ p) during low load operation etc. under less condition, sealing plate M also can make slide plate (B) 10b static and can guarantee sufficient amount of deformation.For example: even the late-late cooling operation load of air conditioner becomes (Δ p=0.5Mpa is with inferior) under minimum operating condition, also can switch to Mode S from pattern P.
In addition, in the design that a side opening end in slide plate chamber is closed by bearing or intermediate plate, the opposite side opening end can carry out static slide plate by being equipped with sealing plate M.But, with 1 sealing plate M, come, in the design of static slide plate, to be necessary to increase by pressure difference (Δ p) amount of deformation of sealing plate M.
[embodiment 2]
[embodiment 3]
[embodiment 4]
Shown in Figure 10 a and Figure 10 b is cylinder (B) 13b, around the 20b of slide plate chamber (B), appends configuration circular trough 32.Slide plate chamber (B) 20b and circular trough 32 in Mode S are in low pressure (Ps), even the amount of deformation of sealing plate M increases, also can further guarantee the sealing between sealing plate M and cylinder plane 21.In addition, as long as groove depth has 0.1mm just enough.
[embodiment 5]
Sealing plate M shown in Figure 11 a and Figure 11 b is formed by 2 sealing plates, namely comprises the first sealing plate M1 and the second sealing plate M2.The thickness of slab of thickness ratio the second sealing plate M2 of the first sealing plate M1 is thin.On the first sealing plate M1, append 4 seal plate bore (B) 45b.On the other hand, the second sealing plate M2 with 20bDe center, slide plate chamber (B) near append configuration 1 seal plate bore (A) 45a. on consistent position.To the assembling aspect of cylinder (B) 13b, in the same manner as in Example 1 overlapping the first sealing plate M1 and the second sealing plate M2 and by pressure pin 60 be fixed on cylinder plane 21 above.Now, the first thin sealing plate M1 of thickness of slab is configured in to 21 sides, cylinder plane.
In Mode S, because the pressure of 4 seal plate bore (B) 45b of the first sealing plate M1 is to be in low pressure or near the pressure of low pressure, so the first sealing plate M1 and the second sealing plate M2 compress.Now, the second sealing plate M2 that thickness of slab is large and the first little sealing plate M1 of thickness of slab be integrated and with cylinder plane 21, compress.
And due to seal plate bore (A) 45a of the second sealing plate M2, the central part of the first sealing plate M1 forms high pressure.The first sealing plate M1 that thickness of slab is little forms large spherical shape towards slide plate chamber (B) 20b middle part direction.Due to above effect, need not sacrifice the sealing force with cylinder plane 21, also can improve the static force of slide plate (B) 10b.In addition, the thickness of slab of the first sealing plate M1 and the second sealing plate M2, the configuration that also has seal plate bore (A) 45a and seal plate bore (B) 45b and aperture, quantity, can be optimized according to necessity.
[embodiment 6]
Between the static technology of slide plate (B) 10b that above sealing plate M brings and sealing plate M and cylinder plane 21, close gas property improvement technology can, in embodiment 1 to independent assortment between the publicity technology in embodiment 6, obtain synergistic action effect.
In the present invention, the static technology of the slide plate of publicity slip, not only be applied to duplex-cylinder rotary compressor, also can be widely used in 2 stage compression type rotary compressors, also have single cylinder rotary compressor and opening rotary compressor.In addition, above-mentioned rotary compressor not only can carry air conditioner, also can carry in the equipment such as refrigeration plant, water heater.
To sum up, rotary compressor according to the present invention has following beneficial effect:
(1) can carry out static slide plate (B) or remove slide plate (B) static by method simple, high reliability.The maximum deformation quantity of the static middle sealing plate M of slide plate (B) is to decide by the clearance C between cylinder planar surface portion 21 and slide plate (B), the scope below 8 μ m.In addition, in order to make the static institute of slide plate (B) applied pressure, the plate thickness by optimizing sealing plate M or compression area etc. are easy to adjust.
(2) slide plate chamber (B) while being in low pressure, sealing plate M can seal along the shape of cylinder planar surface portion.In addition, the proportional increasing of sealing force and pressure difference (Δ p).Therefore, compare with conventional art, be conducive to prevent the leakage from the high pressure refrigerant of slide plate chamber (B) outside (high pressure) to slide plate chamber (B) inner (low pressure).
(3) sealingization of slide plate chamber (B) is implemented with the sealing plate M of the upper and lower opening section that is configured in slide plate chamber (B).For example with patent documentation 1, compare, do not need the design alteration of main component, can reduce costs.
(4) as sealing plate M, can service precision and alternating bending power and wear-resisting, cost on existing Sweden's steel of having had superiority.
Freezing cycle device according to second aspect present invention embodiment comprises: by according to the described rotary compressor of first aspect present invention embodiment, condenser, expansion valve and vaporizer.According to other configuration examples of the freezing cycle device of the embodiment of the present invention, be wherein all known for those of ordinary skills as vaporizer and condenser etc. and operation, be not described in detail here.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiments or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that do not break away from principle of the present invention and aim can be carried out multiple variation, modification, replacement and modification to these embodiments, scope of the present invention is limited by claim and equivalent thereof.
Claims (10)
1. rotary compressor, its rotary compressor structure section be built in the seal casinghousing that internal pressure is high pressure comprises:
Dispose the cylinder of compression chamber;
Be configured in the piston of described compression chamber;
The slide plate reciprocatingly slided with described piston butt;
Drive the bent axle of described piston;
In described cylinder, be configured in the slide plate chamber of the rearward end of described slide plate;
Be configured in the sealing plate of this slide plate chamber perforate end;
Described sealing plate is due to the pressure reduction between the pressure in the pressure of described housing and described slide plate chamber and make described slide plate static after producing distortion.
2. rotary compressor, its rotary compressor structure section be built in the seal casinghousing that internal pressure is high pressure possesses:
All dispose separately the first cylinder and second cylinder of compression chamber;
The piston configured on described each compression chamber respectively;
The slide plate reciprocatingly slided with described each piston butt;
Drive the bent axle of described two pistons;
In described the second cylinder, be configured in the slide plate chamber of the rearward end of described slide plate;
On the perforate end in this slide plate chamber, due to the pressure reduction between the pressure in the pressure of described housing and described slide plate chamber, produce the sealing plate of distortion;
By described sealing plate distortion make described slide plate static.
3. according to the rotary compressor described in claim 1 or 2, it is characterized in that,
Outfit is switched the pressure in described slide plate chamber between high side pressure and low-pressure lateral pressure COMM communication;
The pressure in described slide plate chamber, when described low-pressure lateral pressure, can make described slide plate static;
The pressure in described slide plate chamber, when described high side pressure, can be removed the static of described slide plate.
4. rotary compressor according to claim 3, is characterized in that, described COMM communication is the pressure switching valve.
5. rotary compressor according to claim 4, is characterized in that, described pressure switching valve is three-way valve or four-way valve.
6. according to the described rotary compressor of any one in claim 1-5, it is characterized in that,
Be provided in sealing plate on each opening end relative on described slide plate chamber a side or both sides produce distortion so that described slide plate is static.
7. according to the described rotary compressor of any one in claim 1-5, it is characterized in that, described sealing plate is the steel plate of resilient 0.02mm ~ 0.5mm thickness range.
8. rotary compressor according to claim 7, is characterized in that, described sealing plate forms roughly rectangular flat board, and described sealing plate the substantial middle place be formed with circular open.
9. rotary compressor according to claim 1 and 2, is characterized in that, described sealing plate amount of deformation adjustment means at least one side, implement at described sealing plate or in the opening end in described slide plate chamber.
10. a freezing cycle device, is characterized in that, comprising: the described rotary compressor of any one, condenser, expansion valve and vaporizer in the 1-9 according to claim.
Priority Applications (1)
| 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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| CN103410731A true CN103410731A (en) | 2013-11-27 |
| CN103410731B CN103410731B (en) | 2018-02-06 |
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Cited By (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 |
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| 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 | rolling piston compressor |
| JPH0579483A (en) * | 1991-09-18 | 1993-03-30 | Daikin Ind Ltd | Multicylinder rotary compressor |
| CN1670374A (en) * | 2004-03-15 | 2005-09-21 | 三洋电机株式会社 | Multicylinder rotary compressor and compressing system and refrigerating unit provided with same |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 | rolling piston compressor |
| JPH0579483A (en) * | 1991-09-18 | 1993-03-30 | Daikin Ind Ltd | Multicylinder rotary compressor |
| CN1670374A (en) * | 2004-03-15 | 2005-09-21 | 三洋电机株式会社 | Multicylinder rotary compressor and compressing system and refrigerating unit provided with same |
| 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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| 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 |
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| CN103410731B (en) | 2018-02-06 |
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