CN105258413B - Multi-cylinder rotary compressor reservoir and there is its multi-cylinder rotary compressor - Google Patents
Multi-cylinder rotary compressor reservoir and there is its multi-cylinder rotary compressor Download PDFInfo
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- CN105258413B CN105258413B CN201510754943.8A CN201510754943A CN105258413B CN 105258413 B CN105258413 B CN 105258413B CN 201510754943 A CN201510754943 A CN 201510754943A CN 105258413 B CN105258413 B CN 105258413B
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Abstract
The invention discloses a kind of multi-cylinder rotary compressor reservoir and there is its multi-cylinder rotary compressor.Multi-cylinder rotary compressor is included with reservoir：Sealing container, closed container include cylindrical tube and seal the 1st end plate and the 2nd end plate at its both ends.Connect the 1st fluid hose of the 1st end plate.Connect the right pipe of the 2nd fluid and the 2nd left pipe of fluid of the 2nd end plate.The port of export in the outside of sealing container, the port of export of the 2nd right pipe of fluid and the 2nd left pipe of fluid has certain lateral separation.Multi-cylinder rotary compressor reservoir according to embodiments of the present invention, it can be connected with two air intake ducts of multi-cylinder rotary compressor, suction pressure will not be caused to lose, during from compressor low speed to high-speed cruising, the effect that refrigerating capacity lifts can be obtained by the improvement of gettering efficiency.
Description
Technical field
The present invention relates to compressor field, more particularly, to a kind of multi-cylinder rotary compressor reservoir and has its
Multi-cylinder rotary compressor.
Background technology
Each cylinder of the twin-tub rotation-type compressor of the variable-frequency motor formula of rotation, institute low because of highly small rigidity at a high speed
So that the big air intake duct of bore can not be connected.Therefore 2 air intake ducts, are preferably connected in the high rigidity median septum of thickening.But,
Conventional reservoir, because 2 air intake ducts of its bottom connection are arranged side by side up and down, can not connect in median septum and possess
2 air intake ducts.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.
Therefore, the present invention proposes a kind of multi-cylinder rotary compressor reservoir, suction pressure will not be caused to lose, passed through
The improvement of gettering efficiency can obtain the effect of refrigerating capacity lifting.
The present invention also proposes a kind of multi-cylinder rotary compressor with above-mentioned multi-cylinder rotary compressor reservoir.
Multi-cylinder rotary compressor reservoir according to embodiments of the present invention, including：Sealing container, the closed container
Including cylindrical tube and seal the 1st end plate and the 2nd end plate at its both ends；Connect the 1st fluid hose of the 1st end plate；Connection
The right pipe of the 2nd fluid and the 2nd left pipe of fluid of 2nd end plate；In the outside of the sealing container, the 2nd fluid right pipe
The port of export of the port of export and the left pipe of the 2nd fluid has certain lateral separation.
Multi-cylinder rotary compressor reservoir according to embodiments of the present invention, due to the 2nd right pipe of fluid the port of export and
The port of export of the 2nd left pipe of fluid has certain lateral separation, therefore can be with two air intake ducts of multi-cylinder rotary compressor
It is connected, suction pressure will not be caused to lose, during from compressor low speed to high-speed cruising, can be obtained by the improvement of gettering efficiency
The effect of refrigerating capacity lifting.
In some embodiments of the invention, multi-cylinder rotary compressor is also included distinguishing plate and communicating pipe with reservoir,
The differentiation plate is fixed on the internal perisporium of the sealing container will be separated into liquid storage cylinder and noise elimination cavity in the sealing container,
It is located at the communicating pipe in the liquid storage cylinder and is fixed on the differentiation plate to connect the liquid storage cylinder and the noise elimination cavity, institute
State the right pipe of the 2nd fluid and the left pipe of the 2nd fluid connects with the noise elimination cavity respectively.
In other embodiments of the present invention, the right pipe of the 2nd fluid and the left Guan Jun of the 2nd fluid are in the sealing
The inside of container possesses the body of " L " shape, and oilhole is configured in the perisporium of each body.
According to some embodiments of the present invention, net-filter assembly is provided with the sealing container.
Specifically, the net-filter assembly includes：Supporting plate, the supporting plate are fixed on the internal perisporium of the sealing container
On, the supporting plate is provided with multiple flow stream windows；Filter screen, the filter screen are fixed on the supporting plate and are located at the supporting plate
Neighbouring 1st fluid hose side.
Multi-cylinder rotary compressor according to embodiments of the present invention, including：2 air intake ducts and according to the above-mentioned implementation of the present invention
The multi-cylinder rotary compressor reservoir of example, the port of export of the right pipe of the 2nd fluid and the port of export of the left pipe of the 2nd fluid
Connect 2 air intake ducts.
Multi-cylinder rotary compressor according to embodiments of the present invention, by being stored up provided with above-mentioned multi-cylinder rotary compressor
Liquid device, during from compressor low speed to high-speed cruising, the effect that refrigerating capacity lifts can be obtained by the improvement of gettering efficiency.
Brief description of the drawings
Fig. 1 is related to embodiments of the invention 1, reservoir sectional view；
Fig. 2 is the same as the correlation of embodiment 1, the plan of reservoir；
Fig. 3 related, rotary compressor and reservoir assembling figure with embodiment 1；
Fig. 4 is related with embodiment 1, possesses the sectional view of the rotary compressor of reservoir；
Fig. 5 assembling configuration diagrams of related, median septum and 2 cylinders with embodiment 1；
Fig. 6 connection figures of related, median septum air intake duct and reservoir fluid pipe with embodiment 1；
Fig. 7 is the same as the correlation of the embodiment of the present invention 2, the sectional view of reservoir.
Reference：
Reservoir 10, cylindrical tube 11, the 1st end plate 11a, the 2nd end plate 11b,
1st fluid hose 13, the right pipe 12 of the 2nd fluid, vertical tube 12d (14d), L words portion 12c (14c), bending section 12b, perforate
End 12a (14a),
The left pipe 14 of 2nd fluid, oilhole 18 (22), distinguish plate 25, noise elimination cavity 26, central vertical pipe 21, liquid storage cylinder 16,
Net-filter assembly 15, supporting plate 15b, filter screen 15a, flow stream window 15c,
Multi-cylinder rotary compressor 1, housing 2, blast pipe 3, condenser 81, expansion valve 82, evaporator 83, the 1st air intake duct
51st, the 2nd air intake duct 52, motor 4, compression mechanical part 5, the 1st cylinder 31, the 2nd cylinder 36, median septum 50, the 1st compression chamber 31a,
2 compression chamber 36a, eccentric shaft 30, base bearing 46, supplementary bearing 41, piston 38 (39), the 2nd inlet hole 56, the 1st inlet hole the 55, the 2nd
Inclined hole 37, the 1st inclined hole 32, conduit 53.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings.Below with reference to
The embodiment of accompanying drawing description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect or can communicate each other；Can be joined directly together, can also be indirectly connected by intermediary, can be with
It is connection or the interaction relationship of two elements of two element internals, is limited unless otherwise clear and definite.For this area
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Multi-cylinder rotary compressor reservoir 10 according to embodiments of the present invention is described in detail below with reference to Fig. 1-Fig. 7,
The multi-cylinder rotary compressor reservoir 10 can be applied in multi-cylinder rotary compressor.
Multi-cylinder rotary compressor according to embodiments of the present invention reservoir 10, including：Sealing container, the 1st fluid hose
13rd, the right left pipe 14 of fluid of pipe 12 and the 2nd of the 2nd fluid.Wherein, closed container includes cylindrical tube 11 and seals the of its both ends
1 end plate 11a and the 2nd end plate 11b, that is to say, that cylindrical tube 11 is hollow structure and both ends open, the 1st end plate 11a and the 2nd
End plate 11b is used for the both ends open of sealing cylinder cylinder 11.
1st fluid hose 13 connects the 1st end plate 11a, i.e. the 1st fluid hose 13 is located on the 1st end plate 11a.The right pipe 12 of 2nd fluid
Pipe 14 left with the 2nd fluid connects the 2nd end plate 11b, i.e. the right left pipe 14 of fluid of pipe 12 and the 2nd of the 2nd fluid is located on the 2nd end plate 11b.
The port of export in the outside of sealing container, the port of export of the right pipe 12 of the 2nd fluid and the left pipe 14 of the 2nd fluid has certain
Lateral separation.
Multi-cylinder rotary compressor according to embodiments of the present invention reservoir 10, due to the outlet of the right pipe 12 of the 2nd fluid
The port of export of end and the left pipe 14 of the 2nd fluid has certain lateral separation, therefore can be with two of multi-cylinder rotary compressor
Air intake duct is connected, and suction pressure will not be caused to lose, can by the improvement of gettering efficiency during from compressor low speed to high-speed cruising
To obtain the effect of refrigerating capacity lifting.
In some embodiments of the invention, as shown in fig. 7, multi-cylinder rotary compressor also includes distinguishing with reservoir 10
Plate 25 and communicating pipe, distinguish plate 25 and be fixed on the internal perisporium of sealing container will be separated into liquid storage cylinder 16 in sealing container and disappear
The operatic tunes 26, it is located at communicating pipe in liquid storage cylinder 16 and is fixed on and distinguish on plate 25 to connect liquid storage cylinder 16 and the fluid of noise elimination cavity the 26, the 2nd
The right left pipe 14 of fluid of pipe 12 and the 2nd connects with noise elimination cavity 26 respectively.In the example depicted in fig. 7, communicating pipe is central vertical pipe
21。
In other embodiments of the present invention, as shown in figure 1, the right left pipe 14 of fluid of pipe 12 and the 2nd of the 2nd fluid is close
The inside of envelope container possesses the body of " L " shape, and oilhole 18 is configured in the perisporium of each body.Specifically, the right pipe 12 of the 2nd fluid
The body possessed with the left pipe 14 of the 2nd fluid includes vertical tube and L words portion.
As shown in Figure 1 and Figure 7, according to some embodiments of the present invention, sealing container is interior to be provided with net-filter assembly 15.So as to
To be filtered to entering the refrigerant in reservoir 10.Specifically, as shown in figure 1, net-filter assembly 15 includes：Supporting plate 15b
It is fixed on filter screen 15a, supporting plate 15b on the internal perisporium of sealing container, supporting plate 15b is provided with multiple flow stream window 15c.Filter screen
15a is fixed on the side of neighbouring 1st fluid hose 13 on supporting plate 15b and positioned at supporting plate 15b.
Multi-cylinder rotary compressor according to embodiments of the present invention, including：2 air intake ducts and according to the above-mentioned implementation of the present invention
The multi-cylinder rotary compressor of example is connected with the port of export of the right pipe 12 of fluid of reservoir the 10, the 2nd and the port of export of the left pipe 14 of the 2nd fluid
Connect 2 air intake ducts.
Multi-cylinder rotary compressor according to embodiments of the present invention, by being stored up provided with above-mentioned multi-cylinder rotary compressor
Liquid device 10, during from compressor low speed to high-speed cruising, the effect that refrigerating capacity lifts can be obtained by the improvement of gettering efficiency.
It is described in detail below with reference to Fig. 1-Fig. 7 and is stored up according to the multi-cylinder rotary compressor of two specific embodiments of the present invention
Liquid device.
Embodiment 1
Fig. 1 is that sectional view, Fig. 2 of the reservoir 10 of the present invention are the plans of reservoir 10.The X-X that Fig. 1 is Fig. 2 is cut
Face.The container of closed reservoir 10 is by the spherical plate of cylindrical tube 11, closing both ends forms, these spherical plates are the 1st end
Plate 11a and the 2nd end plate 11b.
In Fig. 1 and Fig. 2, the 1st end plate 11a center is connected to the 1st fluid hose 13 of straight tube, the 2nd end plate 11b is connected to
The right left pipe 14 of fluid of pipe 12 and the 2nd of 2 fluids.The right pipe 12 of 2nd fluid by extend along cylindrical tube 11 vertical tube 12d, L-shaped
Bending section 12b and perforate end the 12a composition of the L words portion 12c and reservoir 10 of bending outside horizontal direction bending.2nd fluid
The right left pipe 14 of fluid of pipe 12 and the 2nd is the symmetrical fluid hose in face.
In addition, the right left pipe 14 of fluid of pipe 12 and the 2nd of the 2nd fluid is connected with the end plate 11b of cylindrical tube 11 or the 2nd
Connect.The perforate end 12a and perforate end 14a in the outside of reservoir 10 have certain transverse width.Moreover, L words portion 12c and L word
Portion 14c bending outer circumferential side possesses oilhole 18.
With as conventional reservoir, vertical tube 12d and vertical tube 14d perforate end and the perforate end of the 1st fluid hose 13
Between possess net-filter assembly 15.Net-filter assembly 15 is flowed by 8 of punch process on supporting plate 15b, filter screen 15a and supporting plate 15b
Body window 15c is formed.
Next, Fig. 3 is the plan overlooked from the upper end side of reservoir 10 of the outside of multi-cylinder rotary compressor 1 assembling.
Fig. 4 is formed for Fig. 3 sectional view, blast pipe 3, condenser 81, expansion valve 82, the evaporator 83 that the upper end of expression housing 2 possesses
Kind of refrigeration cycle, the connection of the 1st air intake duct 51 and the 2nd air intake duct 52 and reservoir 10 with possessing in median septum 50.In addition, store up
On the support that the side that liquid device 10 is typically secured to housing 2 is set, but illustrate and omit.
Multi-cylinder rotary compressor 1 in Fig. 4, in the inner circumferential of closed housing 2 secure motor 4 and compression mechanical part 5.
Compression mechanical part 5 is by the 1st cylinder 31 and the 2nd cylinder 36, the median septum 50 connected between them, the 1st pressure to above-mentioned 2 cylinders
The base bearing 46 and supplementary bearing the 41, the 1st that contracting chamber 31a and the 2nd compression chamber 36a is sealed, slidably supported to eccentric shaft 30 respectively
The piston 38 and the grade of piston 39 that eccentric operating is carried out in compression chamber 31a and the 2nd compression chamber 36a are formed.Wall thickness is larger and Gao Gang
Property the periphery of median septum 50 be connected with the inner circumferential of housing 2, carry out electric arc spot welding.
Fig. 5 represents the relative position of the cylinder 31 of median septum 50 and the 1st and the 2nd cylinder 36.2 cylinders of similar figures design
In, relative to the 2nd cylinder 36, the 1st cylinder 31 presses about 45 degree of the anglec of rotation, is fixed on median septum 50 by 4 screws respectively
On.
The periphery of median septum 50 have the 2nd inlet hole 56 and the perforate of the 1st inlet hole 55, this each perforate end respectively with the 2nd gas
The 2nd inclined hole 37, the 1st inclined hole 32 of the 1st cylinder 31 of cylinder 36 connect.Therefore, as shown in figure 4, the 2nd inlet hole 56 of median septum 50
With the 1st inlet hole 55, be respectively communicated with the 2nd compression chamber 36a and the 1st compression chamber 31a.
Like this median septum 50, its periphery have about 45 degree of interior angles 2 inlet holes be parallel connection perforate.Cause
This, the 1st cylinder 31 and the 2nd cylinder 36 can have bigbore independent air-breathing loop.
Fig. 6 represent the 1st air intake duct 51 being respectively pressed into the 1st inlet hole 55 and the 2nd inlet hole 56 and the 2nd air intake duct 52,
With the connection of the right left pipe 14 of fluid of pipe 12 and the 2nd of the 2nd fluid of reservoir 10.The advance brazing 58 of conduit 53 is on housing 2.Its
Afterwards, the perforate end of the perforate end 12a of the right pipe 12 of the 2nd fluid and the 1st air intake duct 51 carries out brazing (58).
Therefore, the 1st air intake duct 51 and the right left pipe 14 of fluid of pipe 52 and the 2nd of the right air-breathing of pipe 12 and the 2nd of the 1st fluid weld
Gas leakage will not be produced, the assembling of housing 2 and reservoir 10 can be completed.That is, the vertical tube 12d and vertical tube of reservoir 10
14d perforate end and the independent heavy caliber air-breathing circuit communications of the 1st compression chamber 31a and the 2nd compression chamber 36a.
In addition, in Fig. 1 reservoir 10, the bending of the right left pipe 14 of fluid of pipe 12 and the 2nd of the 2nd fluid of the perforate of oilhole 18
The flow velocity of partial periphery is maximum, so the liquid stream body of these oilholes 18 attracts effect maximum.Particularly carry and change operation speed
The liquid stream body captured after degree in the rotary compressor of the variable variable-frequency motor of cold, in reservoir 10 proportional to the speed of service
It may return in the right left pipe 14 of fluid of pipe 12 and the 2nd of the 2nd fluid.Therefore, rotary compressor can expand cold.
Embodiment 2
The reservoir 20 of embodiment 2 shown in Fig. 7, cylindrical tube 11 inner circumferential secure distinguish plate 25 form noise elimination cavity
26.In addition, the right left pipe 14 of fluid of pipe 12 and the 2nd of the 2nd fluid is connected in noise elimination cavity 26.And, be fixed on distinguish plate 25 in
Centre, possesses 1 central vertical pipe 21 of oilhole 22 to liquid storage cylinder 16 and the perforate of noise elimination cavity 26.
About big 1.5 times of the bore of the right left pipe 14 of fluid of pipe 12 or the 2nd of the fluid of relative aperture the 2nd of central vertical pipe 21 with
Above, so above-mentioned 2 fluid hoses will not also increase even if 1 central vertical pipe 21, fluid hose fluid resistance is shared.In addition, disappear
The addition of the operatic tunes 26 can not only reduce fluid sound, also have the bending machining and the easy effect of assembling for making 2 fluid hoses.
The reservoir of the present invention, the multi-cylinder rotary that can be applied in air conditioner, freezing machine, water heater etc. is mounted in
In compressor, in addition it can also apply in horizontal rotary compressor.This reservoir can utilize current equipment system
Make.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (5)
- A kind of 1. multi-cylinder rotary compressor, it is characterised in that including：1st cylinder and the 2nd cylinder；Median septum, the median septum are located between the 1st cylinder and the 2nd cylinder, and the median septum is set provided with interval The 1st inlet hole put and the 2nd inlet hole, the 1st inlet hole connect with the 1st inclined hole of the 1st cylinder, the 2nd suction Hole connects with the 2nd inclined hole of the 2nd cylinder, and 2 air intake ducts connect with the 1st inlet hole and the 2nd inlet hole respectively,Multi-cylinder rotary compressor is included with reservoir：Sealing container, the sealing container include cylindrical tube and seal it 1st end plate at both ends and the 2nd end plate；Connect the 1st fluid hose of the 1st end plate；The 2nd fluid for connecting the 2nd end plate is right Pipe and the 2nd left pipe of fluid；In the outside of the sealing container, the port of export and the left pipe of the 2nd fluid of the right pipe of the 2nd fluid The port of export there is certain lateral separation；2 air intake ducts respectively with the port of export of the right pipe of the 2nd fluid and described The port of export connection of the left pipe of 2 fluids.
- 2. multi-cylinder rotary compressor according to claim 1, it is characterised in that the reservoir also include distinguish plate and Communicating pipe, it is described differentiation plate be fixed on the internal perisporium of the sealing container with will be separated into the sealing container liquid storage cylinder and Noise elimination cavity, it is located at the communicating pipe in the liquid storage cylinder and is fixed on the differentiation plate to connect the liquid storage cylinder and described disappear The operatic tunes, the right pipe of the 2nd fluid and the left pipe of the 2nd fluid connect with the noise elimination cavity respectively.
- 3. multi-cylinder rotary compressor according to claim 1, it is characterised in that the right pipe of the 2nd fluid and the described 2nd The left Guan Jun of fluid possesses the body of " L " shape in the inside of the sealing container, and oilhole is configured in the perisporium of each body.
- 4. multi-cylinder rotary compressor according to claim 1, it is characterised in that be provided with filter screen group in the sealing container Part.
- 5. multi-cylinder rotary compressor according to claim 4, it is characterised in that the net-filter assembly includes：Supporting plate, the supporting plate are fixed on the internal perisporium of the sealing container, and the supporting plate is provided with multiple flow stream windows；Filter screen, the filter screen are fixed on the side of neighbouring 1st fluid hose on the supporting plate and positioned at the supporting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510754943.8A CN105258413B (en) | 2015-11-06 | 2015-11-06 | Multi-cylinder rotary compressor reservoir and there is its multi-cylinder rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510754943.8A CN105258413B (en) | 2015-11-06 | 2015-11-06 | Multi-cylinder rotary compressor reservoir and there is its multi-cylinder rotary compressor |
Publications (2)
| Publication Number | Publication Date |
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| CN105258413A CN105258413A (en) | 2016-01-20 |
| CN105258413B true CN105258413B (en) | 2018-01-23 |
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| CN201510754943.8A Active CN105258413B (en) | 2015-11-06 | 2015-11-06 | Multi-cylinder rotary compressor reservoir and there is its multi-cylinder rotary compressor |
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| CN110966181A (en) * | 2018-09-30 | 2020-04-07 | 广东美芝精密制造有限公司 | Compressor with a compressor housing having a plurality of compressor blades |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3869705B2 (en) * | 2001-11-22 | 2007-01-17 | 株式会社日立製作所 | Hermetic rotary compressor |
| JP5433354B2 (en) * | 2009-09-14 | 2014-03-05 | 東芝キヤリア株式会社 | Multi-cylinder rotary compressor and refrigeration cycle equipment |
| CN103727033A (en) * | 2012-10-10 | 2014-04-16 | 上海奥申机械有限公司 | Liquid storage tank for multi-inflator compressor |
| CN203822636U (en) * | 2014-03-28 | 2014-09-10 | 西安庆安制冷设备股份有限公司 | Double-rotor double-stage compressor and cooling/heating system thereof |
| CN205373173U (en) * | 2015-11-06 | 2016-07-06 | 广东美芝制冷设备有限公司 | Multi -cylinder reservoir and have its multi -cylinder rotary compressor for |
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