CN103452854B - Rotary compressor - Google Patents
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- CN103452854B CN103452854B CN201310363364.1A CN201310363364A CN103452854B CN 103452854 B CN103452854 B CN 103452854B CN 201310363364 A CN201310363364 A CN 201310363364A CN 103452854 B CN103452854 B CN 103452854B
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Abstract
The present invention proposes a kind of rotary compressor, this compressor includes: seal casinghousing, electrodynamic machine portion and compression mechanical part, wherein, compression mechanical part is constituted by with lower component: have the cylinder of compression chamber, it is arranged on the piston in compression chamber and slide plate, the bent axle of eccentric operating piston, the base bearing of the flange in the slidably supported bent axle of difference and outfit seal compression chamber and supplementary bearing, it is provided in the exhaust apparatus in compression chamber perforate on one side of the flange of base bearing and the flange of supplementary bearing or both sides, the compression chamber sealing surface of the flange of exhaust apparatus is formed phosphate coating and processes layer.Thus, the deflection of valve accommodating groove can process the thickness of layer by phosphate coating and correct realization planarization, and the metal that can be prevented effectively between piston contacts, piston deceleration phenomenon.
Description
Technical field
Compressor field of the present invention, specifically, the present invention relates to a kind of rotary compressor.
Background technology
Rotary compressor, up to the present, continue up bearing flange face configure tongue shape air bleeding valve (hereinafter referred to as flap valve) design, this has become the feature of rotary compressor.Flap valve simple structure durability is good, but the shortcoming that the area that there is valve accommodating groove is excessive, the volumetric efficiency that the clearance volume (clearance volume) in order to reduce steam vent is brought reduces, and the thickness of valve accommodating groove needs to be maintained at about 1.5～2.0mm.Further, owing to valve accommodating groove overlaps compression chamber internal diameter, the pressure differential inside and outside compression chamber causes that valve accommodating groove deforms towards compression chamber.Piston is not only deformed the abrasion in face when sliding on this deformation plance, due to the effect of brake force on piston, bent axle also can produce abrasion at short notice.
Summary of the invention
It is contemplated that solve one of above-mentioned technical problem at least to a certain extent or provide at a kind of useful business selection.For this, it is an object of the present invention to propose a kind of rotary compressor and twin-tub rotation-type compressor.
In one aspect of the invention, the present invention proposes a kind of rotary compressor, described rotary compressor includes: seal casinghousing, electrodynamic machine portion and compression mechanical part, wherein, described compression mechanical part is constituted by with lower component: have the cylinder of compression chamber, it is arranged on the piston in described compression chamber and slide plate, the bent axle of piston described in eccentric operating, slidably supported described bent axle and outfit seal base bearing and the supplementary bearing of the flange of described compression chamber respectively, it is provided in the exhaust apparatus in described compression chamber perforate on one side of the flange of described base bearing and the flange of described supplementary bearing or both sides, the compression chamber sealing surface of the flange of described exhaust apparatus is formed phosphate coating and processes layer.
Thus, the deflection of valve accommodating groove can process the thickness of layer by phosphate coating and correct realization planarization, the metal between piston can be avoided to contact, piston deceleration phenomenon.Further, since achieve planarization, it is possible to reduce piston end surface high pressure gas leakage out.Therefore, the phosphate coating of sealing surface processes layer and can play the effect of reliability and the volumetric efficiency improving rotary compressor.
It addition, rotary compressor according to the above embodiment of the present invention can also have following additional technical characteristic:
According to one embodiment of present invention, described phosphate coating processes the thickness of layer is 5～10 microns.
According to one embodiment of present invention, at least one of described base bearing and supplementary bearing is to be formed by cast iron or powder metallurgy.
According to one embodiment of present invention, the upper surface of described phosphate coating process layer is formed with layer of molybdenum-disulfide.
According to one embodiment of present invention, the thickness of described layer of molybdenum-disulfide is 5～10 microns.
In a second aspect of the present invention, the present invention proposes a kind of twin-tub rotation-type compressor, described twin-tub rotation-type compressor includes: seal casinghousing, electrodynamic machine portion and compression mechanical part, wherein, constituted by with lower component in described compression mechanical part: there are two cylinders of compression chamber, it is arranged on the dividing plate between said two cylinder, it is separately positioned on two pistons in said two compression chamber, the bent axle of eccentric operating said two piston, slidably supported described bent axle and outfit seal base bearing and the supplementary bearing of the flange of described compression chamber respectively, the exhaust apparatus to described compression chamber perforate is configured respectively on described flange, the compression chamber sealing surface of the flange of described exhaust apparatus is formed phosphate coating and processes layer.
Thus, the deflection of valve accommodating groove can process the thickness of layer by phosphate coating and correct realization planarization, the metal between piston can be avoided to contact, piston deceleration phenomenon.Further, since achieve planarization, it is possible to reduce piston end surface high pressure gas leakage out.Therefore, the phosphate coating of sealing surface processes layer and can play the effect of reliability and the volumetric efficiency improving rotary compressor.
According to one embodiment of present invention, described phosphate coating processes the thickness of layer is 5～10 microns.
The additional aspect of the present invention and advantage will part provide in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from conjunction with will be apparent from easy to understand the accompanying drawings below description to embodiment, wherein:
Fig. 1 is the inside longitudinal section of the rotary compressor of embodiments of the invention.
The rotary compressor of Fig. 2 embodiments of the invention is processed the plane graph of rear min bearing by implementing phosphate coating.
The base bearing plane graph of the exhaust apparatus of the rotary compressor of Fig. 3 embodiments of the invention.
The base bearing plane graph of the Wear parts of the rotary compressor of Fig. 4 embodiments of the invention.
The longitudinal section of the inside of the rotary compressor of Fig. 5 embodiments of the invention.
The longitudinal section of the inside of the rotary compressor of Fig. 6 embodiments of the invention.
Wherein, each label is expressed as: 4, compression mechanical part；10, exhaust apparatus；11, flap valve；20, valve accommodating groove；21, thin groove；23, steam vent；30, phosphating coat；40, cylinder；41, compression chamber；45, piston；50, base bearing；52, base bearing flange；53, sealing surface；60, bent axle.
Detailed description of the invention
Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish.The embodiment described below with reference to accompanying drawing is illustrative of, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " 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 the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
Additionally, term " first ", " second " are only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include one or more these features.In describing the invention, " multiple " are meant that two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly；Can be mechanically connected, it is also possible to be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be the connection of two element internals.For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in the present invention as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can include the first and second features and directly contact, it is also possible to include the first and second features and be not directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " include fisrt feature directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or be merely representative of fisrt feature level height less than second feature.
Inventor is based on following discovery and completes the present invention:
Being equipped with the bearing of tongue shape air bleeding valve on flange, owing to the area of valve accommodating groove is relatively big, its bottom surface is also relatively thin, the rigidity reduction of valve accommodating groove causes that compression chamber side deforms.Piston end surface not only can cause abrasion due to metal contact when deformation plance slides, and due to the effect of brake force on piston, the oil film between bent axle and bearing disappears, and can produce abrasion in the bent axle short time.The inventors found that adding phosphate coating on the sealing surface by the compression chamber on base bearing flange processes, it is 5～10 microns that phosphate coating owing to being formed processes layer thickness, even if so there is deformation (about 5 microns) in valve accommodating groove, it is also possible to avoid deformation plance to contact with the metal of the upper surface of piston.It addition, the phosphate coating process layer on deformation plance can be thinning owing to flowing, it is possible to revise deformation plance and realize planarizing.Reliability and the efficiency of rotary compressor can be effectively improved from there through above-mentioned simple method.
For this, in one aspect of the invention, the present invention proposes a kind of rotary compressor, below with reference to Fig. 1, this rotary compressor is described in detail.
As it is shown in figure 1, this rotary compressor 1 is by the compression mechanical part 4 being assembled in seal casinghousing 2 internal diameter and is disposed on the motor section 3 in portion and constitutes.Below compression mechanical part 4 is equipped with: slide plate (omitting in figure) that in cylinder, the compression chamber 41 formed on cylinder, the piston 45 of eccentric operating and its piston synchronous reciprocatingly slide, drive the bent axle 60 of piston 45, the base bearing 50 of its bent axle slidably supported and supplementary bearing 55.
Wherein, base bearing 50 is to be made up of base bearing wheel hub 51 and base bearing flange 52, and supplementary bearing 55 is to be made up of supplementary bearing wheel hub 56 and supplementary bearing 57.Base bearing flange 52 and supplementary bearing flange 57 are fixed on cylinder 40, form the compression chamber 41 of sealing on cylinder 40.According to one embodiment of present invention, base bearing flange 52 is equipped with exhaust apparatus 10, assembles muffler 65.Therefore, base bearing flange 52 is to be made up of the plane of the sealing surface 53 being equipped with seal compression chamber 41 and exhaust apparatus 10, and at its center, base bearing wheel hub 51 intersects vertically.The material of base bearing 50 and supplementary bearing 55 is usually employing lamellar blacklead cast iron, can use the powder metallurgy being main component with ferrum in small-sized machine.
Above-mentioned key element component, completes the assembling of compression mechanical part 4 by several screws.Compression mechanical part 4 and motor section 3 are fixed on the internal diameter of seal casinghousing 2, and hereafter, welding upper shell (omits in figure), completes the assembling of rotary compressor 1.It addition, enclose refrigerator oil (omitting in figure) in the bottom of seal casinghousing 2.
According to one embodiment of present invention, the rotary compressor of the present invention essentially consists in after the component of base bearing 50 machines, and whole the additional phosphate coating at the sealing surface 53 of base bearing flange 52 processes.Can be understood as the lower surface at base bearing and carry out phosphate coating process, form phosphate coating and process layer, it is re-use phosphate solution after controlling temperature of liquid that phosphate coating processes, further, can be by adjusting chemical combination and process the character of adjustment coating in time, short time and the manufacture method of thickness.But, only select sealing surface 53 to form coating if selective, production efficiency can be deteriorated.Therefore, except the internal diameter (sliding surface with bent axle 60) of base bearing wheel hub 51, other all faces all carry out phosphate coating process, form phosphate coating and process layer.
Under generally, owing to the entirety of bent axle can be carried out phosphate coating process, it is necessary to get rid of the phosphate coating of the part of the internal diameter of base bearing wheel hub 51.Specifically can remove in following manner, utilize rubber bolt etc. that the internal diameter of base bearing wheel hub 51 is covered, or, after the entirety of base bearing 50 is carried out phosphate coating process, the internal diameter of base bearing wheel hub 51 is carried out Honing process, removes coating.
According to one embodiment of present invention, Fig. 2 is the plane graph of the base bearing 50 after phosphate coating processes, and sealing surface 53 carries out the coating 30 of phosphate coating process.The thickness of its coating 30 is not particularly restricted, according to a particular embodiment of the invention, it is possible to be about 7 microns.The thickness of coating 30 is one of parameter that should be noted that control in phosphate coating processing procedure.According to a particular embodiment of the invention, when adopting manganese phosphate to prepare coating, it is possible to control its thickness and be adjusted in the scope of 5～15 microns.Generally, when the harsh use of the rotary compressor of high power output and high pressure, the thickness of coating can increase.
It addition, according to one embodiment of present invention, the phosphating coat of formation can be black, and thus it has the character that high frictional force carries out flowing, it is possible to improves its tack with metal and Oil keeping, reduces coefficient of friction.R shown in figure is the rotation direction of bent axle 60.
According to one embodiment of present invention, Fig. 3 is the plane graph from the viewed base bearing 50 in exhaust apparatus 10 side.Exhaust apparatus 10 is to be made up of: the steam vent 23 being arranged in valve accommodating groove 20, the flap valve 11 switching its steam vent, the lift of a valve stop 12 controlling the stroke up and down of flap valve, rivet 13 that flap valve 11 and lift of a valve stop 12 are fixed simultaneously.It addition, the tip at valve accommodating groove 20 is equipped with tipper 22.
From the viewpoint minimized causing clearance volume (clearance volume) that volume efficiency reduces, the height generally, due to steam vent 23 is about 2.0～2.5 millimeters, so the height of valve accommodating groove 20 is about 1.5～2.0 millimeters.Further, since flap valve 11 is elongated, so the area of valve accommodating groove 20 becomes big.Therefore, the rigidity of valve accommodating groove 20 is relative to the rigidity of base bearing flange 52, and the region-wide of valve accommodating groove 20 is greatly reduced.Further, exist valve accommodating groove 20 more than 50% area and compression chamber 41(shown in dotted line) the problem of overlapping ranges.
Such as, under the overload operating condition (coolant R410A) of air-conditioning, high pressure (in housing pressure) is about 4.0Mpa, and the pressure of compression chamber 41 changes in about 1.5～4.0Mpa.Therefore, the maximum pressure differential that the top and bottom of base bearing flange 52 produce is about 3.5Mpa.Therefore, the load that valve accommodating groove 20 bears probably is calculated as 70～100Kg, and valve accommodating groove 20 is the Direction distortion towards compression chamber 41 about 5 microns.
On the other hand, the difference of the height of the height of the upper and lower end face of piston 45 and compression chamber 41, it may be assumed that depth pistion gap is easiest to have influence on the gap of rotary compression engine efficiency, it is necessary to as far as possible reduce.But, due to the reason of component error with the vertical deformation of group etc., generally, it is set as about the 0.05% of compression chamber 41 or depth pistion.It can be used as depth pistion design gaps (Δ C).When the height of compression chamber 41 is 30 millimeters, during Δ C=15 micron, piston slide, necessary unilateral gap should be 7.5 microns.
As above-mentioned, when the pressure distortion amount bottom valve accommodating groove 20 is 5 microns, the words calculated merely with the gap of piston upper surface are 2.5 microns.But, the form error of compression chamber 41 and piston 45 grade is more than 6 microns with apolegamy error, distortion inaccuracy summation.Impact on above-mentioned gap, if the half of above-mentioned composite error (3 microns), the upper surface of piston 41 can produce physical property metal between bottom maximum valve accommodating groove 20 contact with deforming.
Fig. 4 is the plane graph not implementing the base bearing 50 phosphate coating processes on sealing surface 53, due to the deformation of valve accommodating groove 20, in its part, metal between the piston 45 of eccentric operating and sealing surface 53 contacts the abrasion state of the local caused and is called Wear parts 35.The abrasion state of this part, can be divided into the glossy surface abrasion after the upper surface cutting of the similar piston 41 big by hardness, cutting profile abrasion, along with this three state of abrasion of copper facing phenomenon.
On the other hand, on the crushed element of thin-walled thickness groove 21 as shown in Figure 2, phosphating coat is crushed on the upper surface of piston 41.But, if phosphating coat is subject to frictional force, the character and the solid lubricity that spread due to the flowing of phosphating coat are good, and therefore a part for phosphating coat can flow thinning, and piston 41 will not occur metal to contact with sealing surface 53.Namely it is judged to: the convex crushed element of thin groove 21 is corrected realization planarization by phosphating coat, same level can be kept with other planes.
According to one embodiment of present invention, by adding phosphate coating on sealing surface 53, owing to the deflection of valve accommodating groove 20 can correct realization planarization by the thickness of coating, the metal between piston can be avoided to contact, piston deceleration phenomenon.Further, since achieve planarization, it is possible to reduce piston end surface high pressure gas leakage out.Therefore, the phosphate coating of sealing surface 53 processes the effect that can play reliability and the volumetric efficiency improving rotary compressor.
According to one embodiment of present invention, process even if implementing phosphate coating on sealing surface 53, without changing above-mentioned depth pistion design gaps Δ C.It addition, phosphate coating processes can use above-mentioned manganese phosphate, other the multiple application material such as calcium phosphate.Further, when adopting material (powder metallurgy) of bearing, the sintered surface of fine Porous causes sealing of hole due to phosphatic soaking into, and can increase powder metallurgy and extend, with phosphatic sealing intensity, the effect that phosphate coating processes.
According to one embodiment of present invention, it is also possible to bearing after carrying out phosphate coating process, add and carry out molybdenum bisuphide process, owing to the operation friction coefficient of piston reduces, so the startup voltage of rotary compressor can be reduced.Further, owing to layer of molybdenum-disulfide and phosphate coating process the affinity between layer well, the life-span of layer of molybdenum-disulfide thus can effectively be extended.
According to one embodiment of present invention, as it is shown in figure 5, when being equipped with exhaust apparatus 10 in the both sides of base bearing 50 and supplementary bearing 55, process as long as implementing phosphate coating on the both sides sealing face 53 of base bearing flange 52 and supplementary bearing flange 57.Can be understood as and carry out phosphate coating process at the lower surface of base bearing and the upper surface of supplementary bearing, in order to form phosphate coating and process layer.
In another aspect of this invention, the present invention proposes a kind of two-cylinder type rotary compressor, below with reference to Fig. 6, this two-cylinder type rotary compressor is described in detail.
Compression mechanical part on Fig. 6 is equipped with: is respectively provided with two cylinders of compressor 41, the median septum 44 being equipped with between two cylinders, is equipped with piston 45 on respective compression chamber 41 and slide plate (omitting in figure).Further, it is equipped with: the bent axle 60 of two pistons that eccentric operating is above-mentioned, respectively slidably supported bent axle 60 and there is the base bearing flange 52 in seal compression chamber 41 and the base bearing 50 of supplementary bearing flange 57 and supplementary bearing 55.It addition, be equipped with exhaust apparatus 10 on base bearing 50 and supplementary bearing 55.
According to one embodiment of present invention, the sealing surface 53 between base bearing flange 52 and supplementary bearing flange 57 adds phosphate coating to process.Can be understood as and carry out phosphate coating process at the lower surface of base bearing and the upper surface of supplementary bearing, in order to form phosphate coating and process layer.Owing to additional phosphate coating processes the beneficial effect that can bring with above-mentioned rotary compressor, then this is not repeating.
According to one embodiment of present invention, the rotary compressor of the present invention or twin-tub rotation-type compressor can be applicable to air conditioner, fridge, water heater etc..It addition, the exhaust apparatus of the present invention easily manufactures, in industry, value is big.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
Although above it has been shown and described that embodiments of the invention, it is understandable that, above-described embodiment is illustrative of, being not considered as limiting the invention, above-described embodiment can be changed when without departing from principles of the invention and objective, revises, replace and modification by those of ordinary skill in the art within the scope of the invention.
Claims (4)
1. a rotary compressor, it is characterised in that described rotary compressor includes:
Seal casinghousing, electrodynamic machine portion and compression mechanical part,
Wherein, described compression mechanical part is constituted by with lower component: have the bent axle of piston described in the cylinder of compression chamber, the piston being arranged in described compression chamber and slide plate, eccentric operating, respectively slidably supported described bent axle and be equipped with the base bearing of flange sealing described compression chamber and supplementary bearing, be provided in the flange of described base bearing and the flange of described supplementary bearing or the exhaust apparatus to described compression chamber perforate on both sides
Install described exhaust apparatus flange compression chamber sealing surface on be formed phosphate coating process layer,
Wherein, described phosphate coating processes the upper surface of layer and is formed with layer of molybdenum-disulfide, and the thickness of described layer of molybdenum-disulfide is 5～10 microns,
It is 5～10 microns that described phosphate coating processes the thickness of layer,
It is black that described phosphate coating processes layer.
2. rotary compressor according to claim 1, it is characterised in that at least one of described base bearing and supplementary bearing is to be formed by cast iron or powder metallurgy.
3. a twin-tub rotation-type compressor, it is characterised in that described twin-tub rotation-type compressor includes:
Seal casinghousing, electrodynamic machine portion and compression mechanical part,
Wherein, is constituted by with lower component in described compression mechanical part: there is two cylinders of compression chamber, the dividing plate being arranged between said two cylinder, two pistons being separately positioned in two described compression chambers, the bent axle of eccentric operating said two piston, respectively slidably supported described bent axle and be equipped with the base bearing of the flange sealing described compression chamber and supplementary bearing, on described flange, configure exhaust apparatus to described compression chamber perforate respectively
Install described exhaust apparatus flange compression chamber sealing surface on be formed phosphate coating process layer,
Wherein, described phosphate coating processes the upper surface of layer and is formed with layer of molybdenum-disulfide, and the thickness of described layer of molybdenum-disulfide is 5～10 microns,
It is 5～10 microns that described phosphate coating processes the thickness of layer,
It is black that described phosphate coating processes layer.
4. rotary compressor according to claim 3, it is characterised in that at least one of described base bearing and supplementary bearing is to be formed by cast iron or powder metallurgy.
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| CN201310363364.1A CN103452854B (en) | 2013-08-19 | 2013-08-19 | Rotary compressor |
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| CN201310363364.1A CN103452854B (en) | 2013-08-19 | 2013-08-19 | Rotary compressor |
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| CN103452854A CN103452854A (en) | 2013-12-18 |
| CN103452854B true CN103452854B (en) | 2016-06-29 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104454452B (en) * | 2014-12-02 | 2017-01-11 | 广东美芝制冷设备有限公司 | Bearing for compressor and compressor |
| CN105485021B (en) * | 2016-01-25 | 2018-11-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Duplex cylinder compressor and air conditioner |
| CN108953152A (en) * | 2017-05-23 | 2018-12-07 | 上海海立电器有限公司 | Cylinder head and its processing method, rolling rotor compressor |
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| CN1065127A (en) * | 1991-03-15 | 1992-10-07 | 株式会社日立制作所 | Hermetic compressor |
| CN1363776A (en) * | 2001-12-14 | 2002-08-14 | 乐金电子(天津)电器有限公司 | Air exhaust structure of sealed rotary dual-cavity compressor |
| CN1474057A (en) * | 2002-08-19 | 2004-02-11 | 乐金电子(天津)电器有限公司 | Rotary compressor capable of preventing cylinder from deforming |
| CN201779023U (en) * | 2010-09-10 | 2011-03-30 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN102762868A (en) * | 2010-02-18 | 2012-10-31 | 东芝开利株式会社 | Rotary compressor and refrigeration cycle device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6042351A (en) * | 1997-12-08 | 2000-03-28 | Carrier Corporation | Enhanced flow compressor discharge port entrance |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065127A (en) * | 1991-03-15 | 1992-10-07 | 株式会社日立制作所 | Hermetic compressor |
| CN1363776A (en) * | 2001-12-14 | 2002-08-14 | 乐金电子(天津)电器有限公司 | Air exhaust structure of sealed rotary dual-cavity compressor |
| CN1474057A (en) * | 2002-08-19 | 2004-02-11 | 乐金电子(天津)电器有限公司 | Rotary compressor capable of preventing cylinder from deforming |
| CN102762868A (en) * | 2010-02-18 | 2012-10-31 | 东芝开利株式会社 | Rotary compressor and refrigeration cycle device |
| CN201779023U (en) * | 2010-09-10 | 2011-03-30 | 广东美芝制冷设备有限公司 | Rotary compressor |
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