CN203348083U - Rotary compressor, double-cylinder rotary compressor and refrigeration circulating device - Google Patents

Rotary compressor, double-cylinder rotary compressor and refrigeration circulating device Download PDF

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Publication number
CN203348083U
CN203348083U CN 201320362423 CN201320362423U CN203348083U CN 203348083 U CN203348083 U CN 203348083U CN 201320362423 CN201320362423 CN 201320362423 CN 201320362423 U CN201320362423 U CN 201320362423U CN 203348083 U CN203348083 U CN 203348083U
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CN
China
Prior art keywords
slide plate
rotary compressor
pressure
chamber
cylinder
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Expired - Fee Related
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CN 201320362423
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Chinese (zh)
Inventor
小津政雄
杨国用
王玲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Midea Toshiba Compressor Corp
Guangdong Meizhi Compressor Co Ltd
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Guangdong Meizhi Compressor Co Ltd
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Priority to CN 201320362423 priority Critical patent/CN203348083U/en
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Publication of CN203348083U publication Critical patent/CN203348083U/en
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Abstract

The utility model discloses a rotary compressor, a double-cylinder rotary compressor and a refrigeration circulating device. A rotary compressing mechanism device is internally arranged in a sealing housing on a high internal pressure side of the rotary compressor, and is provided with an air cylinder provided with a compressing cavity, a sliding sheet, an eccentric shaft, a sliding sheet cavity and a sealing plate; a piston is arranged in the compressing cavity; the sliding sheet is connected with the periphery of the piston in a push-against manner, and makes reciprocating motion; the eccentric shaft drives the piston; the sliding sheet cavity is configured at the rear end of the sliding sheet in the air cylinder; and the sealing plate is configured at an open end of the sliding sheet cavity, and seals the sliding sheet cavity through a pressure difference between the internal pressure of the housing and the pressure of the sliding sheet cavity. According to the rotary compressor, the sealability of the sliding sheet cavity can be improved with a simple method, so that reduction of the compressor efficiency due to gas leakage can be avoided, and the rotary compressor also has advantages in aspects of standardization and manufacturing cost in comparison with other machines.

Description

Rotary compressor, twin-tub rotation-type compressor and freezing cycle device
Technical field
The utility model mainly capacity-varying rotary type compressor with application in air conditioner and refrigeration plant etc. is relevant.
Background technique
Make slide plate action static or remove staticly, the formula rotary compressor is controlled in the transfiguration that the compression that makes the cylinder compression chamber is compressive state or non-compressed state, because this technology can be carried out capability control under lower cost, so very concerned.But the slide plate chamber arranged in order to seal the slide plate back, need to carry out the change different from common machine.Such as, as shown in Fig. 3 (symbol 422 and 331) of Japanese documentation (JP 2008-524515), need to be by the extending portion appended in bearing and the central diaphragm sealed sliding sheet chamber of assigning to.
By two different pressures in slide plate chamber, make slide plate static or remove static variable capacity rotary compressor and need to when slide plate is static, seal the slide plate chamber.But, in traditional sealing means, the cylinder surface of contact of main bearing and supplementary bearing or extend to central diaphragm and seal the slide plate chamber, the error that these components and assembling bring can add up, so the sealing in slide plate chamber can worsen.Due to this reason, pressurized gas will bring the loss of refrigerating capacity to the leakage in slide plate chamber.
The model utility content
The utility model is intended at least solve one of technical problem existed in prior art.For this reason, a purpose of the present utility model is to propose a kind of rotary compressor, and the sealing in the slide plate chamber of described rotary compressor is good.
Another purpose of the present utility model is to propose a kind of twin-tub rotation-type compressor.
Another purpose of the present utility model is to propose a kind of freezing cycle device with described rotary compressor.
According to the utility model first aspect embodiment's rotary compressor, internal pressure is built-in rotary compressor structure device on high-tension side sealed type housing, and described rotary compressor structure device possesses: the cylinder with compression chamber; In described compression chamber, piston is arranged; The slide plate moved back and forth with the periphery butt of described piston; Drive the eccentric shaft 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 the opening end in described slide plate chamber; Wherein said sealing plate seals described slide plate chamber by the pressure reduction between the pressure in the internal pressure of described housing and described slide plate chamber.
According to rotary compressor of the present utility model, by simple method, the sealing in slide plate chamber just can improve, so can prevent that the compressor efficiency that Leakage Gas causes from reducing.And, aspect the standardization with other machine and manufacturing cost, also very having superiority.
In addition, also there is following additional technical feature according to rotary compressor of the present utility model:
According to an embodiment of the present utility model, described rotary compressor also comprises that the pressure that makes described slide plate chamber is in described housing pressure and the COMM communication switched between lower pressure than described housing pressure.
Alternatively, described COMM communication is three-way valve, and described three-way valve is located at the outside of described housing and is connected to the pressure switching pipe of described cylinder.
According to an embodiment of the present utility model, described sealing plate forms by having flexible sheet metal.
According to an embodiment of the present utility model, have hole on described sealing plate, switch is carried out by the to-and-fro motion of described slide plate in described hole.
Preferably, described hole shape becomes elliptical aperture.
According to an embodiment of the present utility model, when described sealing plate seals described slide plate chamber, possess the means that make described slide plate static.
Twin-tub rotation-type compressor according to the utility model second aspect embodiment, in the seal casinghousing that is high side pressure or medial side pressure by its internal pressure in the built-in rotary compressor structure device formed by 2 cylinders, open end in arbitrary slide plate chamber of described cylinder has configured sealing plate, when the arbitrary pressure of the described enclosure interior of pressure ratio in described slide plate chamber is lower, described sealing plate can seal described slide plate chamber.
A kind of freezing cycle device according to the utility model third aspect embodiment comprises: according to the described rotary compressor of the utility model first aspect embodiment or according to the described twin-tub rotation-type compressor of the utility model second aspect embodiment; Condenser; Expansion gear; And vaporizer.
Additional aspect of the present utility model and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
The accompanying drawing explanation
Described and/or additional aspect of the present utility model and advantage are from obviously and easily understanding becoming embodiment's description in conjunction with following accompanying drawing, wherein:
Fig. 1 is the longitudinal section according to the inside of the utility model embodiment 1 rotary compressor R;
Fig. 2 is the longitudinal section according to compressing mechanism device in the utility model embodiment 1 rotary compressor;
Fig. 3 is the assembly detail of rotary compressor centered by cylinder according to the utility model embodiment 1; Be that Fig. 3 is along the sectional view of 3-3 line in Fig. 2;
Fig. 4 is the details drawing according to sealing plate M in the utility model embodiment 1 rotary compressor;
Fig. 5 is the schematic diagram that concerns in sealing plate M, slide plate and slide plate chamber according to the utility model embodiment 1 rotary compressor;
Fig. 6 is the graph of a relation according to the slide plate of the utility model embodiment 1 rotary compressor, slide plate chamber and sliding blade spring;
Fig. 7 is the schematic diagram according to the slide plate chamber distributed magnet of the utility model embodiment 1 rotary compressor;
Fig. 8 a and Fig. 8 b are the schematic diagram according to the cylinder of the utility model embodiment 2 rotary compressor;
Fig. 9 a and Fig. 9 b are the assembly detail of rotary compressor centered by cylinder according to the utility model embodiment 2;
Figure 10 is the application drawing according to the twin-tub rotation-type compressor of the utility model embodiment 3 rotary compressor.
Reference character:
R, rotary compressor; P, compressing mechanism device; H, motor section; S, eccentric shaft;
T, three-way valve; M, sealing plate; N, sealing plate;
2, housing; 3, outlet pipe; 6, pressure switching pipe; 7, suction pipe;
13, cylinder; 14, compression chamber; 15, cylinder screw; 16, piston;
18, slide plate; 19, slide plate chamber;
20, sliding blade spring; 21, cylinder plane; 22, extend plane; 23, vane slot;
25, main bearing; 26, supplementary bearing; 27, bearing groove; 28, central diaphragm;
30, magnet;
42, elliptical aperture; 43, limited part;
50, cross-drilled hole; 51, vertical hole; 52, connectivity slot;
60, assembling pin; 61, pin-and-hole
Embodiment
Below describe embodiment of the present utility model 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.Be exemplary below by the embodiment who is described with reference to the drawings, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, 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 utility model and simplified characterization for convenience of description, 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 restriction of the present utility model.In addition, term " first ", " second " be only for 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 present utility model, except as otherwise noted, the implication of " a plurality of " is two or more.
In description of the present utility model, 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 the concrete meaning of described term in the utility model.
Below with reference to Fig. 1-Figure 10, the rotary compressor according to a plurality of embodiments of the utility model first aspect is described.
Embodiment 1,
Rotary compressor R shown in Fig. 1 compressing mechanism device P of built-in motor section H and its underpart configuration in seal casinghousing 2 forms.Compressing mechanism device P, by cylinder 13, fixing main bearing 25 and the supplementary bearing 26 of lower plane on it, formed by eccentric shaft S of these bearing sliding supports etc.The periphery of the main bearing 25 of compressing mechanism device P is fixed on the inner radius of housing 2.
In rotary compressor R, the high pressure refrigerant (Pd) of discharging from cylinder 13 becomes low pressure refrigerant (Ps) by motor section H, from outlet pipe 3 by condenser E1, expansion gear V and by vaporizer E2 and liquid-storage container A, get back to cylinder 13 from suction pipe 7.Therefore, the same with common rotary compressor, the pressure that the internal pressure of housing 2 is high side pressure (Pd), suction pipe 7 is low-pressure lateral pressure (Ps).In addition, rotary compressor R also has the pressure that makes slide plate 19 in housing pressure and the COMM communication switched between lower pressure than housing pressure.For example, the pressure that in the outside of housing 2, three-way valve T is arranged, connects the pressure switching pipe 6 of cylinder 13 is switched between the pressure (Ps) of the internal pressure (Pd) of housing 2 and sucking pipe 7.
The details of fixing compressing mechanism device P in the internal diameter that Fig. 2 is housing 2.Carry out the eccentric shaft of the piston 16 of off-centre operation and slide plate 18 that first end moves back and forth with piston 16 butts, driven plunger 16 in the compression chamber 14 that compressing mechanism device P is possessed by the centre at cylinder 13 and form with the main bearing 25 of lower plane 21 contacts on each of cylinder 13 and supplementary bearing 26 and the cylinder screw 15 that is connected them.
Next, block the assembled pin 60 of sealing plate M springy of the end of perforate up and down in the slide plate chamber 19 at rear portion of slide plate 18 and this slide plate chamber 19 fixing lightly.Pressure switches while managing 6 configuration 19 perforates of slide plate chamber.In addition, the bearing groove 27 of main bearing 25 and supplementary bearing 26 has been taken in the action of substantially horizontal of first end (limited part 43 of Fig. 4) the restriction sealing plate M of sealing plate M.
Fig. 3 is the 3-3 sectional view of Fig. 2.In addition, Fig. 4 is the detail drawing of fixing seal plate M and its fixing pin 60.Sealing plate M is the thin plate that has superiority of planeness and elasticity aspect, such as selecting Sweden's steel etc.From the internal diameter of compression chamber 14 to the circular flat the external diameter crest line (except chamfered part) of cylinder 13, be partly the words on cylinder plane 21, the object of both sides that this cylinder plane 21 is cylinder 13.The planar surface portion of one side's cylinder plane 21 Contact Pair bearings 26, the opposing party's 21 places, cylinder plane have contacted the planar surface portion of main bearing 25.In addition, the extending direction on his plane 21 of each cylinder, have the upper and lower end that extends slide plate chamber 19, place, 22,Gai plane, plane that perforate is arranged.Therefore, cylinder plane 2 and prolongation plane 22 are same.
Each extends in plane 22, and sealing plate M sells 60 by assembling and fixes gently.That is, sealing plate M has the degrees of freedom of some amounts of deflection.The limited part 43 of the tip of sealing plate M embeds in the bearing groove 27 of supplementary bearings 26 and main bearing 25, thus the assembling of sealing plate M just than being easier to, in addition, sealing plate plate M has some gaps horizontal and vertical.And, to the elliptical aperture 42 of sealing plate M perforate for only on slide plate having a rest property 18 actuation time ground, carrying out the hole of fuel feeding, slide plate when lower dead center (shown in the Smin of Fig. 6) is static, elliptical aperture 42 closes at the upper lower plane of slide plate 18.In addition, as embodiment 2, when sealing plate M sells fixedly by two assemblings, limited part and bearing groove 27 can omit.
Fig. 5 means the relation on slide plate 18 and slide plate chamber 19 and prolongation plane 22.Clearance C between the upper-end surface of the seal face of sealing plate M and slide plate 18 is poor, by the planar dimension up and down of the size on upper and lower air cylinders plane 21 and slide plate 18, and it is fixed by design gaps (2xC), to be come.High pressure refrigerant for fear of housing 2 drains in compression chamber 14 by this design gaps, and above-mentioned gap arranges very littlely as far as possible.(Ps) when therefore, the pressure in slide plate chamber 19 is low pressure, due to the pressure differential deltap p(Pd-Ps of the internal pressure with housing 2 (Pd of being generally in service)) resilient sealing plate M extend plane 22 above press very tightly.At this moment sealing plate M has sealed slide plate chamber 19 and vane slot 23.The pressuring action of sealing plate M, the effect of just in time with the outlet valve of rotary compressor, according to pressure differential deltap p seal valve seat, closing exhaust port is the same.
At this moment, the pressure (Ps) that the back of valve 18 is acted on is equal or diminish with the pressure of compression chamber 14, so slide plate 18 is static in vane slot 23 and slide plate chamber 19.At this moment, the back-end location of slide plate 19 is consistent with lower dead center (position of Smin).Simultaneously, piston 16 is dallied in compression chamber 14, so rotary compressor R keeps non-compression operation.As mentioned above, slide plate is in action to the elliptical aperture 42 of sealing plate M in addition, by slide plate 18, carries out switch, to slide plate 19 fuel feeding.In addition, be also in the action in slide plate chamber 19, make the suitable balancing orifice of internal pressure of the pressure in slide plate chamber 19 and housing 2.
On the one hand, when the pressure in slide plate chamber 19 switches to high pressure (Pd), pressure differential deltap p is zero, so the impacting force extended between plane 22 and sealing plate M is disengaged.That is, the internal pressure (Pd) of the pressure in slide plate chamber 19 and housing 2 becomes identical.Simultaneously, slide plate 18 is due to the pressure (Pd) of its back effect, and its static releasing, so slide plate 18 flies out in compression chamber 14, with the peripheral part butt of piston 16.At this moment, rotary compressor R can start the compression operation again.
Like this, the end of perforate up and down by slide plate chamber 19 is equipped with sealing plate M, characteristics of the present utility model are to obtain following effect and effect.
When slide plate chamber 19 is low pressure (Ps), (1) by pressure differential deltap p sealing slide plate chamber, (2) simultaneously by slide plate 18 in the static compression that stops of lower dead center.(3) prevent that the high pressure refrigerant from leaking slide plate chamber 19, stops the refrigerating capacity loss.
On the other hand, when slide plate chamber 19 is high pressure (Pd), the impacting force of (1) depressurization plate M, make the pressure (Pd) of the pressure in slide plate chamber 19 and housing 2 suitable.(2) remove the static of slide plate 18, again start the compression of cylinder.And the switching of the pressure in slide plate chamber 19 is undertaken by the three-way valve T that connects slide plate chamber 19, rotary compressor R in service can be comfortablely in non-compression operation with compress in service the switching.
With the method that extended bearing sealed sliding sheet chamber in the past, compare, the utility model has utilized the elasticity of sealing plate M, and when slide plate chamber 19 is low pressure (Ps), the characteristics on sealing plate M and prolongation plane 22 are seamlessly to compress.Therefore, have advantages of and be not easy to be compressed the component error of mechanism arrangement P and the impact of assembly error (distortion), thermal distortion etc.Be characterized in, the plane precision impacting force of depending the precision that extends plane 22 and sealing plate M alone is just certain, in addition, even one side or both's precision is bad, the distortion of the sealing plate M caused due to pressure reduction, impacting force also can significantly be improved.
In addition, These characteristics can be optimized by the design of sealing plate M.The compressor that pressure differential deltap p during operation is little, or, in contractive condition, for the distortion that makes less pressure differential deltap p lower seal plate M is just larger, just thickness of slab need to be done thinner.Pressure differential deltap p is large, and thickness of slab can increase.Like this, by the optimization of thickness of slab, impacting force can further be improved.As a reference: the materials'use Sweden steel of sealing plate M, according to service condition, its thickness of slab can being selected and being optimized at 0.02~0.5mm in a big way.
And in the utility model, the amount of deformation of sealing plate M increases, can be when making slide plate 18 static, the top and bottom of by 2 sealing plate M, clamping slide plate 18.Utilize this characteristics, can conscientiously guarantee the static of slide plate 18.In Fig. 5, when slide plate chamber 19 is low pressure, the amount of deformation ratio gap C of sealing plate M is large, and slide plate 18 is clamped between 2 sealing plate M at the lower dead center clock, can guarantee staticly, or keep to continue static.Thereafter, when slide plate chamber 19 switches to high pressure, because can not produce pressure differential deltap p, so being deformed into of sealing plate M is zero, the static of slide plate 18 can be removed.In addition, the slide plate 18 moved back and forth by clearance C is not contacted with sealing plate M, so can not produce abrasion and frictional loss.
Utilize this characteristics, the utility model can append sliding blade spring 20 at the back of slide plate 18 as Compress Spring as shown in Figure 6.Its result, rotary compressor R can start compression once starting.In addition, in running, the pressure one in slide plate chamber 19 switches to low pressure, and sliding blade spring 20 just stops under compressive state, and as mentioned above, slide plate 18 is guaranteed to continue static in lower dead center.In addition, if just will guarantee the static means of slide plate, configured magnet 30 in slide plate chamber 19 fixedly the back of slide plate 18 is just passable by magnet 30 as Fig. 7.
Embodiment 2,
As shown in Figures 2 and 3, the minimal wall section formed between the periphery of the internal diameter in slide plate chamber 19 and cylinder 13 is the part that rigidity is minimum in cylinder.Be pressed into pressure switching pipe 6 in this part, the precision of vane slot 23 just can't guarantee, causes the Leakage Gas and the slide plate wearing and tearing that start from vane slot.
In embodiment 2, in order to solve above-mentioned problem, by the centerline offset in pressure switching pipe 6 and vane slot 23 or slide plate chamber 19, technology is relevant therewith.In Fig. 8 a and Fig. 8 b, the prolongation plane 22 of cylinder 13 increases with respect to embodiment's 1 width.Configured the connectivity slot 52 of 51,Gai hole, vertical hole and the 19 places perforate of slide plate chamber in this prolongation plane 22, from the cross-drilled hole 50 of vertical hole 51 pairs of cylinder peripheries perforate.
Fig. 9 a is cylinder 13, supplementary bearing 26 and the ssembly drawing of sealing plate N with associated component with 9b.Extend in plane 22, cover vertical hole 51 and intercommunicating pore 52 and slide plate chamber 19 and vane slot 23, sealing plate N is fixed with 2 assembling pins 60.At this moment, in order to make sealing plate N distortion, between sealing plate N and assembling pin 60, be provided with little gap.
Pressure switching pipe 6 switches to low pressure Ps from high pressure P d, while becoming Mode S, so produce pressure differential deltap P, at the above-mentioned hole and the groove that extend perforate on plane 22, by sealing plate N, is sealed.Therefore, slide plate chamber 19 can maintain low pressure Ps.
Embodiment 2 means by extending configuration sealing plate N on plane 22, can sealing the low tension loop that connects slide plate chamber 19 from pressure switching pipe 6.In addition, cross-drilled hole 50 has sufficient biasing with respect to vane slot 23 and slide plate chamber 19, so can solve above-mentioned problem.
Embodiment 3,
Figure 10 is the duplex-cylinder rotary compressor R that the cylinder assembly that the cylinder 13 that uses in embodiment 1 forms is placed on downside, the cylinder 17 that appends is configured in upside.Above-mentioned cylinder assembly is connected with supplementary bearing 26 with central diaphragm 28 respectively in 2 cylinder planes 21.On the other hand, the slide plate chamber of cylinder 17 is to having configured sliding blade spring 20 in the middle perforate of housing 2, slide plate 37.Therefore, cylinder 17 is no matter the action of cylinder 13 how, keeps running state usually.
Rotary compressor R slide plate chamber 19 when operation is high pressure (Pd), can bring into play 100% refrigerating capacity.Thereafter, the words cylinder 13 that slide plate chamber 19 switches to low pressure (Ps) is non-compression, so the refrigerating capacity of rotary compressor R is 50%.Like this, twin-tub rotation-type compressor R can carry out freely switching refrigerating capacity between 100% and 50%.But in this embodiment 3, the discharge capacity of 2 cylinders is equal.
Embodiment 3 means that the announcement technology that need not change especially embodiment 1 just can easily be applied in two cylinder type rotary compressors.In this design, cylinder 17 has sliding blade spring 20, so cylinder 13 compresses means without the slide plate of sliding blade spring etc.In addition, rotary compressor has in the situation of 2 stage compressors of two cylinders, when the exhaust pressure of the pressure of housing 2 and the 2nd grade of cylinder is suitable, perhaps, in the situation of the intermediate pressure that the exhaust pressure of the cylinder of the pressure of housing 2 and the 1st grade is suitable, use the words of announcement technology of the present utility model just can seal the slide plate chamber.
According to rotary compressor of the present utility model, on the prolongation plane of the upper lower plane of cylinder 13, each perforate end in the slide plate chamber 19 of perforate covers with whippy sealing plate M.Like this, the slide plate chamber in low pressure, by and housing pressure (high pressure) between the pressure reduction, perforate end and the sealing slide plate chamber 19 that these sealing plates M can compress slide plate chamber 19 that produce.Thus, by simple method, the sealing in slide plate chamber just can improve, so can prevent that the compressor efficiency that Leakage Gas causes from reducing.And, aspect the standardization with other machine and manufacturing cost, also very having superiority.
Freezing cycle device according to the utility model embodiment comprises: according to the rotary compressor of describing in the utility model above-described embodiment or twin-tub rotation-type compressor; Condenser; Expansion gear; And vaporizer.
Be all known according to other configuration examples of the utility model embodiment's freezing cycle device for those of ordinary skills as annexation and the operation of condenser, expansion gear and vaporizer etc., 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 utility model 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 described 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 embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that do not break away from principle of the present utility model and aim can be carried out multiple variation, modification, replacement and modification to these embodiments, scope of the present utility model is limited by claim and equivalent thereof.

Claims (9)

1. a rotary compressor, internal pressure is built-in rotary compressor structure device on high-tension side sealed type housing, described rotary compressor structure device possesses:
Cylinder with compression chamber;
In described compression chamber, piston is arranged;
The slide plate moved back and forth with the periphery butt of described piston;
Drive the eccentric shaft 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 the opening end in described slide plate chamber;
Wherein said sealing plate seals described slide plate chamber by the pressure reduction between the pressure in the internal pressure of described housing and described slide plate chamber.
2. rotary compressor according to claim 1, is characterized in that, also comprises that the pressure that makes described slide plate chamber is in described housing pressure and the COMM communication switched between lower pressure than described housing pressure.
3. rotary compressor according to claim 2, is characterized in that, described COMM communication is three-way valve, and described three-way valve is located at the outside of described housing and is connected to the pressure switching pipe of described cylinder.
4. rotary compressor according to claim 1, is characterized in that, described sealing plate forms by having flexible sheet metal.
5. rotary compressor according to claim 1, is characterized in that, on described sealing plate, has hole, and switch is carried out by the to-and-fro motion of described slide plate in described hole.
6. rotary compressor according to claim 5, is characterized in that, described hole shape becomes elliptical aperture.
7. rotary compressor according to claim 1, is characterized in that, when described sealing plate seals described slide plate chamber, possesses the means that make described slide plate static.
8. a twin-tub rotation-type compressor, is characterized in that,
In the seal casinghousing that is high side pressure or medial side pressure by its internal pressure in the built-in rotary compressor structure device formed by 2 cylinders, open end in arbitrary slide plate chamber of described cylinder has configured sealing plate, when the arbitrary pressure of the described enclosure interior of pressure ratio in described slide plate chamber is lower, described sealing plate can seal described slide plate chamber.
9. a freezing cycle device, is characterized in that, comprising:
According to the described rotary compressor of any one or twin-tub rotation-type compressor according to claim 8 in claim 1-7;
Condenser;
Expansion gear; And
Vaporizer.
CN 201320362423 2013-06-21 2013-06-21 Rotary compressor, double-cylinder rotary compressor and refrigeration circulating device Expired - Fee Related CN203348083U (en)

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Application Number Priority Date Filing Date Title
CN 201320362423 CN203348083U (en) 2013-06-21 2013-06-21 Rotary compressor, double-cylinder rotary compressor and refrigeration circulating device

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103511262A (en) * 2013-06-21 2014-01-15 广东美芝制冷设备有限公司 Rotary compressor, double-cylinder rotary compressor and refrigeration circulating plant
CN112177931A (en) * 2019-07-03 2021-01-05 珠海格力节能环保制冷技术研究中心有限公司 Pump body subassembly, compressor and indirect heating equipment
CN112746960A (en) * 2019-10-30 2021-05-04 广东美芝制冷设备有限公司 Compressor and refrigeration cycle device with same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103511262A (en) * 2013-06-21 2014-01-15 广东美芝制冷设备有限公司 Rotary compressor, double-cylinder rotary compressor and refrigeration circulating plant
CN112177931A (en) * 2019-07-03 2021-01-05 珠海格力节能环保制冷技术研究中心有限公司 Pump body subassembly, compressor and indirect heating equipment
CN112746960A (en) * 2019-10-30 2021-05-04 广东美芝制冷设备有限公司 Compressor and refrigeration cycle device with same

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