CN104454538B - Rolling rotor compressor - Google Patents
Rolling rotor compressor Download PDFInfo
- Publication number
- CN104454538B CN104454538B CN201310419419.6A CN201310419419A CN104454538B CN 104454538 B CN104454538 B CN 104454538B CN 201310419419 A CN201310419419 A CN 201310419419A CN 104454538 B CN104454538 B CN 104454538B
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- Prior art keywords
- cylinder
- enthalpy
- parts
- rolling rotor
- increasing enthalpy
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/60—Shafts
- F04C2240/601—Shaft flexion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a kind of rolling rotor compressor.This compressor include liquor separator parts, two increase enthalpy parts, housing unit and pump assembly；Liquor separator parts and increasing enthalpy parts are arranged on the outside of described housing unit, and pump assembly is fixed on described housing unit, and pump assembly includes bent axle and cylinder, and wherein cylinder includes lower cylinder, middle cylinder and upper cylinder；Position corresponding with described cylinder on bent axle is provided with eccentric part, and described eccentric part is at least three.The rolling rotor compressor of the present invention, has carried out pressure ratio three times and has decomposed, so that the rolling rotor compressor of the present invention can adapt to worse operating mode, reduces pump housing leakage simultaneously, improves the performance of compressor；Reduce delivery temperature by twice Gas-supplying enthalpy-increasing, improve the reliability of compressor.
Description
Technical field
The present invention relates to Compressor Technology field, particularly relate to a kind of rolling rotor compressor.
Background technology
The compressor of air-conditioning and Teat pump boiler use increases due to cold-producing medium specific volume under worst cold case at present,
The unit inspiration capacity of compressor reduces, and causes the heating capacity of compressor significantly to decline, and due to refrigeration
The inspiration capacity of agent reduces, and specific discharge reduces, to the compressor inside pump housing and the lubrication of motor and cooling effect
The best, the pressure ratio of the suction and discharge of compressor is the biggest at low temperatures, and the delivery temperature of compressor is the highest, commonly
Rotary compressor is limited by structure, can form bigger leakage and friction loss, and factors above causes compression
Machine Performance And Reliability at low temperatures is the most undesirable.
The method solving this problem at present is to use double-stage compressor.And double-stage compressor uses in the middle of once cold
But and a Gas-supplying enthalpy-increasing, but under more maximum conditions, reliability and performance still can be deteriorated, as being used in heat
During pump water heater, operating mode is complicated and severe；When northern heating, the lowest grade of outdoor temperature is in the case of these,
The reliability of existing compressor cannot be guaranteed.
Summary of the invention
Based on this, it is necessary to for existing compressor when operating mode is severe, the problem of Performance And Reliability difference,
Propose a kind of rolling rotor compressor.
For achieving the above object, technical scheme is as follows:
A kind of rolling rotor compressor, including liquor separator parts, increases enthalpy parts, housing unit and pump housing group
Part, described liquor separator parts and described increasing enthalpy parts are arranged on the outside of described housing unit, described pump housing group
Part is fixed on described housing unit；Described pump assembly includes cylinder and bent axle；
Described cylinder includes lower cylinder, middle cylinder and upper cylinder；Described lower cylinder and described liquor separator parts and
Described increasing enthalpy parts are connected, and are arranged on the bottom of described middle cylinder；Described upper cylinder is arranged on described middle gas
The top of cylinder；
Position corresponding with described cylinder on described bent axle is provided with eccentric part, and described eccentric part is at least three
Individual；Described increasing enthalpy parts are two, increase enthalpy parts including the first increasing enthalpy parts and second.
Wherein in an embodiment, described lower cylinder is low-pressure stage cylinder, and described middle cylinder is medium pressure grade gas
Cylinder, described upper cylinder is hiigh pressure stage cylinder.
Wherein in an embodiment, described pump assembly also includes lower clapboard, median septum and upper spacer；
Described lower clapboard is arranged on the top of described lower cylinder, and septum plate is arranged on described lower clapboard and institute
State between cylinder；Described upper spacer is arranged between described middle cylinder and described upper cylinder.
Wherein in an embodiment, described lower cylinder arranges air entry, described air entry and described separatory
Device parts are connected.
Wherein in an embodiment, described lower cylinder is additionally provided with and is connected with described first increasing enthalpy parts
First increasing enthalpy mouth and with described second increase enthalpy parts be connected second increasing enthalpy mouth；
Described first increasing enthalpy mouth and described second increases enthalpy mouth and is used for forming air supply passage.
Wherein in an embodiment, described lower clapboard is provided with the first increasing enthalpy chamber and second and increases enthalpy chamber, institute
Stating on median septum corresponding the first cavity and the second cavity of being provided with, described first increases enthalpy chamber and described first empty
Match formation the first closed cavity in chamber, and described second increases enthalpy chamber and described second cavity matches formation second
Closed cavity.
Wherein in an embodiment, described first increasing enthalpy intracavity is provided with and is connected with described first increasing enthalpy mouth
The first gas supplementing opening, be additionally provided with the lower cylinder air vent connected with lower cylinder；
Described second increases enthalpy intracavity is provided with the second gas supplementing opening being connected with described second increasing enthalpy mouth.
Wherein in an embodiment, in described first cavity, it is provided with the middle gas logical with described middle cylinders
Cylinder air entry；
The upper cylinder air entry being connected with described upper cylinder it is provided with in described second cavity, and with described
The middle cylinder exhaust port that middle cylinders is logical.
Wherein in an embodiment, described middle cylinder is provided with corresponding with described upper cylinder air entry
Upper cylinder air intake passage, and the air intake passage being connected with described first closed cavity.
The invention has the beneficial effects as follows:
The rolling rotor compressor of the present invention, by arranging three cylinders, has carried out pressure ratio three times and has decomposed,
So that the rolling rotor compressor of the present invention can adapt to worse operating mode, reduce the pump housing simultaneously
Leakage, improves the performance of compressor；It is provided with two and increases enthalpy parts, reduced by twice Gas-supplying enthalpy-increasing
Delivery temperature, improves the reliability of compressor.
Accompanying drawing explanation
Fig. 1 is the structure chart of rolling rotor compressor one embodiment of the present invention；
Fig. 2 is the schematic appearance of rolling rotor compressor one embodiment of the present invention；
Fig. 3 is the lower cylinder structural representation of the rolling rotor compressor shown in Fig. 1；
Fig. 4 is the lower clapboard structural representation of the rolling rotor compressor shown in Fig. 1；
Fig. 5 is the median septum structural representation of the rolling rotor compressor shown in Fig. 1；
Fig. 6 is the middle structural representation of air cylinder of the rolling rotor compressor shown in Fig. 1；
Fig. 7 is the internal refrigeration storage agent stream schematic diagram one of the rolling rotor compressor shown in Fig. 1；
Fig. 8 is the internal refrigeration storage agent stream schematic diagram two of the rolling rotor compressor shown in Fig. 1；
Wherein, 1 cover assembly；2 liquor separator parts；3 motor stators；4 rotors；5 bent axles；6
Upper flange；Roller on 7；8 upper cylinders；9 upper spacers；Roller in 10；Cylinder in 11；111 air intake passages；
112 upper cylinder air intake passages；12 median septums；120 first cavitys；121 second cavitys；122 upper cylinders are inhaled
QI KOU；Cylinder exhaust port in 123；Cylinder air entry in 124；13 lower clapboards；130 first increase enthalpy chamber；131
Second increases enthalpy chamber；132 first gas supplementing openings；133 second gas supplementing openings；134 lower cylinder air vents；14 lower rollers；
15 lower cylinders；150 air entries；151 first increase enthalpy mouth；152 second increase enthalpy mouth；16 lower flanges；17 shells
Body assembly；18 increase enthalpy parts；181 first increase enthalpy parts；182 second increase enthalpy parts；19 lower covers；201
One closed cavity；202 second closed cavities.
Detailed description of the invention
In order to make technical scheme clearer, below in conjunction with accompanying drawing, the rolling-rotor to the present invention
Formula compressor is described in further detail.Should be appreciated that specific embodiment described herein is only in order to solve
Release the present invention, be not intended to limit the present invention.
Referring to figs. 1 through Fig. 8, as it is shown in figure 1, rolling rotor compressor one embodiment of the present invention includes
Cap assemblies 1, liquor separator parts 2, motor (motor stator 3 and rotor 4), housing unit 17, increasing
Enthalpy parts 18, lower cover 19 and pump assembly；Wherein, pump assembly includes bent axle 5, upper flange 6, upper rolling
Son 7, upper cylinder 8, upper spacer 9, middle roller 10, middle cylinder 11, median septum 12, lower clapboard 13, under
Roller 14, lower cylinder 15 and lower flange 16.Liquor separator parts 2 and increasing enthalpy parts 18 are arranged on housing unit
The outside of 17, pump assembly is fixed on housing unit 17.More preferably, pump assembly includes three cylinders,
Lower cylinder 15 is connected with liquor separator parts 2 and increasing enthalpy parts 18, is arranged on the bottom of middle cylinder 11, on
Cylinder 8 is arranged on the top of middle cylinder 11.More preferably, lower cylinder 15 is low-pressure stage cylinder, middle cylinder 11
For medium pressure grade cylinder, upper cylinder 8 is hiigh pressure stage cylinder.
More preferably, position corresponding with cylinder on bent axle 5 is provided with eccentric part, and described eccentric part is at least
Three, including the first eccentric part, the second eccentric part and three eccentricity portion；Wherein, the first eccentric part and the therapeutic method to keep the adverse QI flowing downwards
Cylinder matches, and the second eccentric part matches with middle cylinder, and three eccentricity portion matches with upper cylinder.By setting
Put three cylinders, pressure ratio has been carried out three times and has decomposed so that the rolling rotor compressor of the present invention is suitable for
Worse operating mode, reduces pump housing leakage simultaneously, improves the performance of compressor.
More preferably, liquor separator parts 2 are one, and increasing enthalpy parts 18 is two, including the first increasing enthalpy parts 181
Enthalpy parts 182 are increased with second.By twice Gas-supplying enthalpy-increasing, reduce the delivery temperature of compressor, improve pressure
The reliability of contracting machine.
The rolling rotor compressor of the present invention, by arranging three cylinders, has carried out pressure ratio three times and has decomposed,
So that the rolling rotor compressor of the present invention can adapt to worse operating mode, reduce the pump housing simultaneously
Leakage, improves the performance of compressor；It is provided with two and increases enthalpy parts, reduced by twice Gas-supplying enthalpy-increasing
Delivery temperature, improves the reliability of compressor.
It is preferred that as a kind of embodiment, lower clapboard 13 is arranged on the top of lower cylinder 15, in every
Plate 12 is arranged between lower clapboard 13 and middle cylinder 11, and upper spacer 9 is arranged on middle cylinder 11 and upper cylinder 8
Between.
It is preferred that as a kind of embodiment, lower cylinder 15 is provided with air entry 150, air entry 150
It is connected with liquor separator parts 2.More preferably, lower cylinder 15 is additionally provided with and the first increasing enthalpy parts 181 phase
The first of connection increases enthalpy mouth 151 and increases the second increasing enthalpy mouth 152 that enthalpy parts 182 are connected with second；First increases
Enthalpy mouth and second increases enthalpy mouth and is used for forming increasing enthalpy air supply passage.
More preferably, as a kind of embodiment, lower clapboard 13 is provided with the first increasing enthalpy chamber 130 and second
Increasing enthalpy chamber 131, on median septum 12, correspondence is provided with the first cavity 120 and the second cavity 121；First increases
Match formation the first closed cavity 201 with the first cavity 120 in enthalpy chamber 130, and second increases enthalpy chamber 131 and second
Cavity 121 matches and forms the second closed cavity 202.By arranging the first closed cavity 201 He in dividing plate
Second closed cavity 202 is as intermediate cavity so that the circulation passage of cold-producing medium shortens, and drag losses is little.
It is preferred that as a kind of embodiment, be provided with in the first increasing enthalpy chamber 130 and the first increasing enthalpy mouth 151
The first gas supplementing opening 132 being connected, accordingly, is provided with in the second increasing enthalpy chamber 131 and the second increasing enthalpy mouth 152
The second gas supplementing opening 133 being connected.It is additionally provided with, in first increasing enthalpy chamber 130, the therapeutic method to keep the adverse QI flowing downwards connected with lower cylinder 15
Cylinder air vent 134.More preferably, it is provided with the middle cylinder being connected with middle cylinder 11 in the first cavity 120 to inhale
QI KOU 124, is provided with the upper cylinder air entry 122 being connected with upper cylinder 8, also sets in the second cavity 121
It is equipped with the middle cylinder exhaust port 123 being connected with middle cylinder 11.More preferably, middle cylinder 11 is provided with upper
The upper cylinder air intake passage 112 that cylinder air entry 122 is corresponding, is additionally provided with and is connected with the first closed cavity
Air intake passage 111.
By arranging air intake passage, exhaust passage and air supply passage on cylinder and dividing plate, complete cold-producing medium and exist
Circulation compression within pump assembly, it is achieved the function of compressor.
As shown in FIG. 7 and 8, the operation principle of the compressor with rolling rotor of the present embodiment is:
During work, under the dragging of motor, the pump housing operates, and the cold-producing medium returned from system the first loop passes through
Liquor separator parts enter and carry out in lower cylinder compressing for the first time；Cold-producing medium after compression for the first time is expelled to
In the first closed cavity that lower clapboard and median septum are formed, and with passing through of returning from system second system loop
First increasing enthalpy mouth enters the cold-producing medium of the first closed cavity and mixes, and mixed cold-producing medium is inhaled into middle gas
Cylinder carries out second time and compresses；Cold-producing medium after second time compression is expelled to lower clapboard and the second of median septum formation
In closed cavity, and mixing with the cold-producing medium returned from system tertiary circuit, mixed cold-producing medium is again
It is inhaled into upper cylinder to carry out compressing for the third time；It is then discharged out entering compressor housing upper space, then by upper
The air vent of lid is discharged, and so far compressor completes the whole compression process of cold-producing medium.
The rolling rotor compressor of the present invention, by arranging three cylinders, has carried out pressure ratio three times and has decomposed,
So that the rolling rotor compressor of the present invention can adapt to worse operating mode, reduce the pump housing simultaneously
Leakage, improves the performance of compressor；It is provided with two and increases enthalpy parts, reduced by twice Gas-supplying enthalpy-increasing
Delivery temperature, improves the reliability of compressor；The first confined air it is provided with between lower clapboard and median septum
Chamber and the second closed cavity so that the circulation passage of cold-producing medium shortens, and drag losses is little.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is as the criterion.
Claims (9)
1. a rolling rotor compressor, including liquor separator parts, increase enthalpy parts, housing unit and pump assembly, described liquor separator parts and described increasing enthalpy parts are arranged on the outside of described housing unit, described pump assembly is fixed on described housing unit, and described pump assembly includes cylinder and bent axle；It is characterized in that,
Described cylinder includes lower cylinder, middle cylinder and upper cylinder；Described lower cylinder is connected with described liquor separator parts and described increasing enthalpy parts, is arranged on the bottom of described middle cylinder；Described upper cylinder is arranged on the top of described middle cylinder；
Position corresponding with described cylinder on described bent axle is provided with eccentric part, and described eccentric part is at least three；Described increasing enthalpy parts are two, increase enthalpy parts including the first increasing enthalpy parts and second.
Rolling rotor compressor the most according to claim 1, it is characterised in that:
Described lower cylinder is low-pressure stage cylinder, and described middle cylinder is medium pressure grade cylinder, and described upper cylinder is hiigh pressure stage cylinder.
Rolling rotor compressor the most according to claim 1, it is characterised in that:
Described pump assembly also includes lower clapboard, median septum and upper spacer；
Described lower clapboard is arranged on the top of described lower cylinder, and septum plate is arranged between described lower clapboard and described middle cylinder；Described upper spacer is arranged between described middle cylinder and described upper cylinder.
Rolling rotor compressor the most according to claim 1, it is characterised in that:
Arranging air entry on described lower cylinder, described air entry is connected with described liquor separator parts.
Rolling rotor compressor the most according to claim 4, it is characterised in that:
It is additionally provided with on described lower cylinder and increases the first increasing enthalpy mouth that enthalpy parts are connected and the second increasing enthalpy mouth being connected with described second increasing enthalpy parts with described first；
Described first increasing enthalpy mouth and described second increases enthalpy mouth and is used for forming increasing enthalpy air supply passage.
Rolling rotor compressor the most according to claim 3, it is characterised in that:
It is provided with the first increasing enthalpy chamber and second on described lower clapboard and increases enthalpy chamber, on septum plate, correspondence is provided with the first cavity and the second cavity, described first increasing enthalpy chamber and described first cavity match and form the first closed cavity, and described second increasing enthalpy chamber and described second cavity match and form the second closed cavity.
Rolling rotor compressor the most according to claim 6, it is characterised in that:
Described first increases enthalpy intracavity is provided with the first gas supplementing opening being connected with described first increasing enthalpy mouth, is additionally provided with the lower cylinder air vent connected with lower cylinder；
Described second increases enthalpy intracavity is provided with the second gas supplementing opening being connected with described second increasing enthalpy mouth.
Rolling rotor compressor the most according to claim 7, it is characterised in that:
The middle cylinder air entry logical with described middle cylinders it is provided with in described first cavity；
The upper cylinder air entry being connected with described upper cylinder, and the middle cylinder exhaust port logical with described middle cylinders it is provided with in described second cavity.
Rolling rotor compressor the most according to claim 8, it is characterised in that:
The upper cylinder air intake passage corresponding with described upper cylinder air entry, and the air intake passage being connected with described first closed cavity it is provided with on described middle cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310419419.6A CN104454538B (en) | 2013-09-13 | 2013-09-13 | Rolling rotor compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310419419.6A CN104454538B (en) | 2013-09-13 | 2013-09-13 | Rolling rotor compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104454538A CN104454538A (en) | 2015-03-25 |
| CN104454538B true CN104454538B (en) | 2016-10-19 |
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ID=52901127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310419419.6A Active CN104454538B (en) | 2013-09-13 | 2013-09-13 | Rolling rotor compressor |
Country Status (1)
| Country | Link |
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| CN (1) | CN104454538B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229084B (en) * | 2020-10-26 | 2022-05-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Multistage compressor, electric appliance and control method |
| CN113464435B (en) * | 2021-08-13 | 2023-07-25 | 珠海凌达压缩机有限公司 | Enthalpy increasing component of compressor, compressor and air conditioning system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000073974A (en) * | 1998-08-26 | 2000-03-07 | Daikin Ind Ltd | Two stage compressor and air conditioner |
| CN100572816C (en) * | 2005-10-27 | 2009-12-23 | 乐金电子(天津)电器有限公司 | Variable capacity multi-cylinder rotary compressor and method of operation thereof |
| CN2879058Y (en) * | 2006-01-13 | 2007-03-14 | 海信集团有限公司 | New hot pump air conditioning system with air-filling circuit |
| CN201363276Y (en) * | 2008-12-31 | 2009-12-16 | 珠海格力电器股份有限公司 | Double-cylinder type two-stage compression rotary compressor |
| CN102374167B (en) * | 2010-08-26 | 2015-07-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotary dual-rotor compressor |
| CN202082104U (en) * | 2011-05-11 | 2011-12-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Bi-rotor two-stage enthalpy-adding compressor |
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2013
- 2013-09-13 CN CN201310419419.6A patent/CN104454538B/en active Active
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| CN104454538A (en) | 2015-03-25 |
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