CN104949366B - refrigerator - Google Patents
refrigerator Download PDFInfo
- Publication number
- CN104949366B CN104949366B CN201410302809.XA CN201410302809A CN104949366B CN 104949366 B CN104949366 B CN 104949366B CN 201410302809 A CN201410302809 A CN 201410302809A CN 104949366 B CN104949366 B CN 104949366B
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- Prior art keywords
- motor
- temperature
- refrigerant
- expansion valve
- rudimentary
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Compressor (AREA)
Abstract
The present invention provides a kind of refrigerator, which has：Refrigerant circuit, it is for refrigerant circulation and has double-stage compressor (1), condenser (3) and main expansion valve (4), which has rudimentary compression unit (10), advanced compression portion (20) and the motor (30) for driving these compression units；Liquid pipe (6), it will form the refrigerant flow path supplied to the motor chamber (33) for being provided with motor (30) from condenser (3) towards a part of branch of the refrigerant of main expansion valve (4) in double-stage compressor (1)；Linear electron expansion valve (7) is set to liquid pipe (6)；And open and close valve (8), it is set to liquid pipe (6).
Description
Technical field
The present invention relates to a kind of refrigerator, it includes that rudimentary compression unit, advanced compression portion and driving are above-mentioned each to have
The double-stage compressor of the motor of compression unit.
Background technology
Within the compressor, the component used is respectively provided with temperature limiting.
All the time, in the refrigerator of the compressor with compression refrigerant, compressor motor is generated in order to prevent
The deterioration and damage of stator have following refrigerator：Refrigerant is depressurized using expansion mechanism, by the refrigeration of low temperature
Agent supplies into motor chamber and cools down motor (referring for example to patent document 1, patent document 2).
In patent document 1, to the refrigerator with the double-stage compressor for including rudimentary compression unit and advanced compression portion
In compressor motor cooling recorded, be used in motor cooling refrigerant towards the middle grade, i.e. rudimentary discharge unit and
Collaborate between advanced sucting.In addition, in patent document 2, record the calorific value with motor correspondingly control expansion mechanism,
And the method for controlling the refrigeration dose supplied into motor chamber.
Citation
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2012-102967 bulletins (page 7, Fig. 1)
Patent document 2：Japanese Unexamined Patent Publication 7-139820 bulletins (page 3, Fig. 1)
Invention content
The subject that the invention solves
In above patent document 1,2, the refrigeration dose cooled down for motor is controlled using expansion mechanism, swollen
Exist such as capillary, electric expansion valve in swollen mechanism, wherein there is linear electricity as the expansion valve for being easier to implement control
Sub- expansion valve.The reasons why linear electron expansion valve is based on it structurally, have can for valve opening when becoming completely closing on the way in operation
Error can be generated, therefore is unable to control to completely close.It is used as a result, being cooled down using linear electron expansion valve as motor
Expansion mechanism in the case of, even if dropping to target cooling temperature or less without refrigerant towards motor chamber in motor temperature
Under the operating condition of interior supply, the refrigerant also sustainable supply into motor chamber is generated beyond necessarily by refrigerant to motor
Indoor supply this problem.
Since the refrigerant of motor cooling returns to intergrade as described above, freeze used in motor cooling
Dosage is more, and the refrigeration dose back to intergrade more increases, and intermediate pressure rises.Moreover, when intermediate pressure rises, rudimentary compression
The compression ratio [(rudimentary discharge pressure=intermediate pressure)/rudimentary suction pressure] in portion increases.In addition, the sucking refrigeration in advanced compression portion
Dosage increases.
Moreover, making the volume efficiency of rudimentary compression unit deteriorate along with the rising of the compression ratio of rudimentary compression unit, freeze
Ability reduces.In addition, the sucking refrigeration dose in advanced compression portion increases, therefore compressor power increases.
Therefore, when beyond necessarily supplying refrigerant into motor chamber, as a result, there are coefficient of refrigerating performance (cooling energy
Power/compressor power) reduce this problem.
The present invention makes in view of above-mentioned point, it is intended that providing one kind can inhibit beyond necessarily by horse
The refrigerator for being supplied up to cooling refrigerant to motor and inhibiting the rising of intermediate pressure, coefficient of refrigerating performance excellent.
A technical solution to solve project
The refrigerator of the present invention has：Refrigerant circuit, for refrigerant circulation and with double-stage compressor, condenser with
And decompressor, the double-stage compressor have rudimentary compression unit, advanced compression portion and the motor for driving these compression units；Piping,
A part for refrigerant of its branch from condenser towards decompressor is formed in the double-stage compressor to being provided with motor
Motor chamber supply refrigerant flow path；Linear electron expansion valve is set to the piping；And open and close valve, it is set to described
Piping.
Invention effect
In accordance with the invention it is possible to inhibit to control intermediate beyond necessarily supplying the refrigerant of motor cooling to motor
The rising of pressure can obtain the excellent refrigerator of coefficient of refrigerating performance.
Description of the drawings
Fig. 1 is the skeleton diagram of the refrigerant circuit of the two-stage screw refrigerator of embodiments of the present invention 1.
Fig. 2 is the motor cooling controlling party of the double-stage compressor in the two-stage screw refrigerator of embodiments of the present invention 1
The flow chart of method.
Fig. 3 is the skeleton diagram of the refrigerant circuit of the two-stage screw refrigerator of embodiments of the present invention 2.
Specific implementation mode
Hereinafter, being illustrated to the two-stage screw refrigerator of embodiments of the present invention with reference to attached drawing etc..Here, in whole
In attached drawing, mark identical reference numeral be it is identical or with its comparable structure, it is general in the full text of specification.Separately
Outside, the form for the inscape that specification full text is stated only is example, is not limited to these records.
Hereinafter, the structure of an example of refrigerator of the explanation with double-stage compressor, i.e. two-stage screw refrigerator, this is cold
Jelly machine has rudimentary compression unit, advanced compression portion and the motor for driving these each compression units.
Embodiment 1
Fig. 1 is the skeleton diagram of the refrigerant circuit of the two-stage screw refrigerator of embodiments of the present invention 1.It needs to illustrate
It is that solid arrow indicates that refrigerant system, dotted arrow indicate oil system in Fig. 1.
Two-stage screw refrigerator has double-stage compressor 1, oil eliminator 2, condenser 3, the main expansion as decompressor
These structures are passed sequentially through refrigerant piping to connect, constitute refrigerant circuit by valve 4 and evaporator 5.
Double-stage compressor 1 is twin-stage single-screw compressor, as indicating the structure of outline in Fig. 1, has the outer of tubular
Shell 1a, the rudimentary compression unit 10 being contained in shell 1a, advanced compression portion 20, make rudimentary compression unit 10 and advanced compression portion 20
Rotate the motor 30 of driving.
Rudimentary compression unit 10 and advanced compression portion 20 are all made of screw type compression unit, and rudimentary compression unit 10 has rudimentary
Helical rotor 11 and gate rotor 12, advanced compression portion 20 has advanced helical rotor 21 and gate rotor 22.
Multiple spiral helicine helicla flute 11a are formed in the peripheral part of rudimentary helical rotor 11, advanced helical rotor 21 is also same
Multiple spiral helicine helicla flute 21a are formed in peripheral part to sample.
The gate rotor 12 of rudimentary compression unit 10 clips rudimentary helical rotor 11 with the radial direction along rudimentary helical rotor 11
There are two mode configures, the gate rotor 22 in advanced compression portion 20 is there are one the radially configurations of advanced helical rotor 21.In addition,
Multiple teeth portion 12a, 22a are formed in the peripheral part of gate rotor 12,22, these teeth portion 12a, 22a and rudimentary helical rotor 11
The helicla flute 21a of helicla flute 11a and advanced helical rotor 21 engages engaging respectively, is respectively formed rudimentary discharge chambe and advanced pressure
Contracting room.It should be noted that here, formed setting three gate rotors form, but can also be formed setting four gate rotors, with
The mode that rudimentary helical rotor 11 is clamped along the radial direction of rudimentary helical rotor 11 configures two and with along advanced helical rotor
The mode that advanced helical rotor 21 is clamped in 21 radial direction configures two forms.
Motor 30 is configured in motor chamber 33, has inscribed with shell 1a and fixed stator 31 and configuration in stator 31
Inside motor rotor 32.Motor 30 is formed as controlling rotating speed in the case where its driving circuit is frequency converter mode.
Medial compartment 40 between motor chamber 33 and rudimentary helical rotor 11 and advanced helical rotor 21 is connected, but with it is low
The suction side (low-pressure side) of grade helical rotor 11 is divided by shaft seal 34.Rudimentary helical rotor 11, advanced helical rotor
21 configure in same axis each other with motor rotor 32, are all fixed on helical axis 50.Moreover, in motor chamber 33 configured with by
Such as the motor chamber wall temperature sensor 60 of the compositions such as thermistor, detection motor chamber 33 wall temperature.It should be noted that
The motor chamber wall temperature sensor 60 constitutes temperature that pair temperature corresponding with the calorific value of motor 30 is detected, of the invention
Testing agency.
Two-stage screw refrigerator is also equipped with one of the refrigerant (liquid refrigerant) from condenser 3 towards main expansion valve 4
Element branches, the liquid pipe 6 for forming the refrigerant flow path supplied to motor chamber 33.In this way, by will be from condenser 3 towards master
A part for the liquid refrigerant of expansion valve 4 is supplied to motor chamber 33, cooling motor 30.Being configured in liquid pipe 6 can
Control the linear electron expansion valve 7 towards the refrigerant supply amount of motor chamber 33.Being also configured in liquid pipe 6 can be opened and closed
The open and close valve 8 of the refrigerant flow path of liquid pipe 6 being made of such as solenoid valve.It should be noted that here, in liquid pipe
In 6, the upstream of linear electric expansion valve 7 be configured with open and close valve 8, as long as but open and close valve 8 allocation position in liquid pipe 6
, all not related in the upstream downstream of linear electric expansion valve 7.
In addition, two-stage screw refrigerator has the control device 70 being made of microcomputer etc..Control device 70 has
The ROM (all not shown) of the program of CPU, the RAM of the various data of storage, storage for carrying out operating control etc., according in ROM
Program and to control two-stage screw refrigerator whole.
In addition, control device 70 is in order to make the motor chamber wall temperature detected by motor chamber wall temperature sensor 60 reach pre-
The valve opening of the target cooling temperature first set, adjustment linear electron expansion valve 7 supplies to control to the refrigerant of motor chamber 33
It measures and controls open and close valve 8.
However, the linear electron expansion valve 7 of the refrigeration dose of control motor cooling as described above based on it structurally
Reason, when way is completely closes in operation, valve opening is possible to generate error, therefore is unable to control to completely close.Cause
This, can not block the refrigerant flow path of liquid pipe 6 using linear electron expansion valve 7.Thus, for example relative to motor 30
Smaller, motor 30 the calorific value of load it is less in the case of, even if in order to control by the valve opening setting of linear electron expansion valve 7
On minimum, also can be via liquid pipe 6 to 33 sustainable supply liquid refrigerant of motor chamber.In this case, sometimes by horse
Up to 30 beyond necessarily cooling down, the motor chamber wall temperature detected by motor chamber wall temperature sensor 60 gets lower than target cooling
Temperature.Therefore, in the present invention, in liquid pipe 6 be arranged open and close valve 8, can barrier liquid piping 6 in refrigerant stream
It is dynamic.
Next, refrigerant in action and refrigerant circuit to the twin-stage single-screw compressor 1 of present embodiment 1
Flowing illustrates.
By being supplied electric power from power supply source (not shown) towards stator 31, make motor rotor 32, helical axis 50, rudimentary spiral shell
Gyrator 11 and advanced helical rotor 21 rotate.In addition, respectively engage with rudimentary helical rotor 11 and advanced helical rotor 21
Gate rotor 12,22 also rotates.The gas refrigerant of low-temp low-pressure is inhaled by the helicla flute of rudimentary helical rotor 11 as a result,
The rudimentary discharge chambe that the teeth portion 12a of 11a and gate rotor 12 is formed, carries out the compression of the first order.The gas compressed by rudimentary discharge chambe
Cryogen is discharged towards medial compartment 40.
The gas refrigerant being discharged towards medial compartment 40 is inhaled into helicla flute 21a and gate rotor by advanced helical rotor 21
The advanced compression room that 22 teeth portion 22a is formed, carries out the compression of the second level.It is contracted by advanced compression chamber pressure and becomes high temperature and pressure
Gas refrigerant is discharged towards oil eliminator 2.
Towards oil eliminator 2 be discharged gas refrigerant contain oil, in oil eliminator 2, be separated into gas refrigerant with
Oil, gas refrigerant reach condenser 3.In condenser 3, gas refrigerant is exchanged heat with external heat source and is condensed, and is become
The liquid refrigerant of high pressure.
The liquid refrigerant of high pressure becomes the liquid refrigerant of low-temp low-pressure by main expansion valve 4 is expanded, and reaches
Evaporator 5.In evaporator 5, liquid refrigerant is exchanged heat with external heat source and is evaporated, and becomes the gas refrigeration of low-temp low-pressure
Agent is inhaled into above-mentioned rudimentary discharge chambe.This is the flowing of the main refrigerant in two-stage screw refrigerator.
In addition, a part for the liquid refrigerant condensed in condenser 3 is passing through linear electron via liquid pipe 6
Expansion valve 7 supplies in the state of being expanded to low-temp low-pressure towards motor chamber 33, cooling motor 30.Refrigerant after cooling motor 30
It is flowed into medial compartment 40, advanced compression room is inhaled into together with the refrigerant being discharged from rudimentary discharge chambe.System after this
The flowing of cryogen is as described above.
In addition, the oil isolated in oil eliminator 2 is via oil piping 9, the above-mentioned rudimentary compression unit 10 of directive and advanced
Compression unit 20.
Fig. 2 is the motor cooling controlling party of the double-stage compressor in the two-stage screw refrigerator of embodiments of the present invention 1
The flow chart of method.The flow chart of Fig. 2 is by control room every being implemented.It should be noted that here, open and close valve 8 has been controlled as
It is complete to open.
Control device 70 compare the motor chamber wall temperature that is detected by motor chamber wall temperature sensor 60 with it is preset
Target cooling temperature (S1) makes linear electron expansion valve 7 to preset if motor chamber wall temperature is higher than target cooling temperature
Regulation aperture acted (S2) to opening direction.On the other hand, if motor chamber wall temperature be target cooling temperature hereinafter, if
Check whether motor chamber wall temperature is consistent with target cooling temperature (S3), if consistent, i.e., it is cold to be less than target for motor chamber wall temperature
Warm, then continue checking for linear electron expansion valve 7 valve opening whether and non-controlling on minimum (S4).Control device 70 is online
Property electric expansion valve 7 valve opening and non-controlling on minimum in the case of, make linear electron expansion valve 7 with preset rule
Determine aperture to be acted (S5) to closing direction.
On the other hand, if in step s 4 the valve opening of linear electron expansion valve 7 in order to control on minimum, control device
Open and close valve 8 is set as completely closing (S6) by 70.In addition, if motor chamber wall temperature is equal with target cooling temperature in step s3,
Then control device 70 makes the aperture that linear electron expansion valve 7 is maintained the statusquo.
By by the control of above flow chart by control room every repeating, motor chamber wall temperature is higher than target cooling temperature
During degree, the aperture of linear electron expansion valve 7 increases regulation aperture every time, is supplied to motor chamber 33 via liquid pipe 6
The flow of liquid refrigerant increases, cooling motor chamber 33.On the other hand, the phase of target cooling temperature is less than in motor chamber wall temperature
Between, the aperture of linear electron expansion valve 7 reduces, and the flow of the liquid refrigerant supplied to motor chamber 33 via liquid pipe 6 subtracts
It is few, improve the sub-cooled of motor chamber 33.Even if if moreover, being set as the minimum aperture in control, horse in linear electron expansion valve 7
It is still below target cooling temperature up to chamber wall temperature, then open and close valve 8 is made to completely close, stops the liquid refrigerating supplied to motor chamber 33
Agent.Using above control, it can prevent to exceed necessarily supplying liquid refrigerant towards motor chamber 33 is interior.
It should be noted that here, controlling linear electric expansion valve 7 so as to be detected by motor chamber wall temperature sensor 60
Motor chamber wall temperature reach target cooling temperature, but self-evidently, linear electric expansion valve 7 can also be controlled to maintain
Including in the prescribed limit of target cooling temperature.
In addition, here, make the aperture of linear electron expansion valve 7 by control room every with regulation aperture to opening direction or pass
It closes direction to be acted, but in addition to this, it can also be for example with as the temperature with motor chamber wall temperature and target cooling temperature
The mode of poor corresponding aperture is acted.
As described above, in present embodiment 1, the liquid refrigerant for cooling motor chamber 33 by liquid pipe 6
In, open and close valve 8 is additionally provided in addition to linear electron expansion valve 7, be set as can barrier liquid piping 6 in refrigerant flowing.
Even if the valve opening of linear electron expansion valve 7 is set as the minimum in control as a result, motor chamber wall temperature is still below target cooling temperature
Degree, when beyond the operating condition for necessarily supplying liquid refrigerant to motor chamber 33, by the way that open and close valve 8 to be set as completely closing
Unnecessary liquid refrigerant can be prevented to the supply of motor chamber 33.As a result, inhibiting the motor returned to medial compartment 40
Gas refrigeration dosage after cooling, the pressure restraining of medial compartment 40 can be obtained it is relatively low, can obtain coefficient of refrigerating performance (operating effect
Rate) higher refrigerator.
In addition, with economizer (not shown) and being constituted in the refrigerator that economizer recycles in refrigerant circuit, lead to
Crossing makes intermediate pressure reduce and increase the heat exchange amount in economizer, increases refrigerating effect.That is, the increase of refrigerating capacity can be realized.
Embodiment 2
In embodiment 2, the coiling temperature sensor 61 of the coiling temperature of the stator 31 of setting detection motor 30 substitutes reality
Apply the motor chamber wall temperature sensor 60 of mode 1.It is corresponding to the calorific value of motor 30 that the coiling temperature sensor 61 constitutes detection
Temperature, temperature testing organization of the invention.The structure of refrigerant circuit in addition to this, action, motor shown in Fig. 2 are cold
But flowing controlled etc. is identical as embodiment 1.In addition, the variation being applicable in the composition part of embodiment 1 is being implemented
It is equally applicable in the identical composition part of mode 2.
Fig. 3 is the skeleton diagram of the refrigerant circuit of the two-stage screw refrigerator of embodiments of the present invention 2.It needs to illustrate
It is that in figure 3, solid arrow indicates that refrigerant system, dotted arrow indicate oil system.
In the double-stage compressor 1 of the two-stage screw refrigerator of embodiment 2, coiling temperature sensor 61 is in embedment stator
It is configured in the state of 31 inside, detects the temperature of coiling, detection temperature is exported to control device 70.Control device 70 with
So that coiling temperature is reached the mode of preset target cooling temperature, carries out linear electron expansion identically as embodiment 1
The control of valve 7 and open and close valve 8.
According to the present embodiment 2, effect below is obtained while obtaining effect same as embodiment 1.That is, due to
The inside that coiling temperature sensor 61 is embedded to stator 31 configures, therefore warm with progress at the motor locular wall of embodiment 1
Degree detection is compared, and temperature-responsive is excellent, can realize the higher motor cooling control of precision compared with embodiment 1.
It should be noted that in the above embodiment 1,2, rudimentary compression unit 10 and advanced compression portion 20 are all single-screw
Compression unit, but can be also made of the compression unit of the other modes such as double helix, rolling, rotation, reciprocal.
In addition, in the above embodiment 1,2, show that evaporator 5 is provided to the embodiment of refrigerator, but can also
It is the embodiment that evaporator 5 is set to equipment side.
Reference sign：
1：Double-stage compressor；1a：Shell；2：Oil eliminator；3：Condenser；4：Main expansion valve；5：Evaporator；6：Liquid is matched
It manages (piping)；7：Linear electron expansion valve；8：Open and close valve；9：Oil piping；10：Rudimentary compression unit；11：Rudimentary helical rotor；
11a：Helicla flute；12：Gate rotor；12a：Teeth portion；20：Advanced compression portion；21：Advanced helical rotor；21a：Helicla flute；22：Lock
Rotor；22a：Teeth portion；30：Motor；31：Stator；32：Motor rotor；33：Motor chamber；34：Shaft seal；40：Medial compartment；50：
Helical axis；60：Motor chamber wall temperature sensor；61：Coiling temperature sensor；70：Control device.
Claims (4)
1. a kind of refrigerator, which is characterized in that the refrigerator has：
Refrigerant circuit for refrigerant circulation and has double-stage compressor, condenser and decompressor, the double-stage compressor
With rudimentary compression unit, advanced compression portion and the motor for driving these compression units；
Liquid pipe, by from the condenser towards a part of branch of the liquid refrigerant of the decompressor, described
The refrigerant flow path supplied to the motor chamber for being provided with the motor is formed in double-stage compressor；
Linear electron expansion valve is set to the liquid pipe；
Open and close valve is set to the liquid pipe；
Temperature testing organization detects temperature corresponding with the calorific value of the motor；And
Control device controls the linear electron expansion valve so that the temperature detected by the temperature testing organization reaches pre-
The target cooling temperature first set,
Even if the linear electron expansion valve is being controlled upper non fully-closed minimum aperture in order to control by the control device, by
In the case that the temperature that the temperature testing organization detects is still below the target cooling temperature, it is complete to make the open and close valve
It closes.
2. refrigerator according to claim 1, which is characterized in that
The temperature testing organization detects the temperature of the wall surface of the motor chamber.
3. refrigerator according to claim 1, which is characterized in that
The temperature testing organization detects the coiling temperature of the motor.
4. refrigerator according to any one of claim 1 to 3, which is characterized in that
The rudimentary compression unit and the advanced compression portion are all made of screw type compression unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014072075A JP6373034B2 (en) | 2014-03-31 | 2014-03-31 | refrigerator |
| JP2014-072075 | 2014-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104949366A CN104949366A (en) | 2015-09-30 |
| CN104949366B true CN104949366B (en) | 2018-10-02 |
Family
ID=54164229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410302809.XA Active CN104949366B (en) | 2014-03-31 | 2014-06-30 | refrigerator |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6373034B2 (en) |
| CN (1) | CN104949366B (en) |
| TW (1) | TWI568982B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10782057B2 (en) * | 2017-12-29 | 2020-09-22 | Johnson Controls Technology Company | Motor temperature control technique with temperature override |
| WO2021171489A1 (en) * | 2020-02-27 | 2021-09-02 | 三菱電機株式会社 | Screw compressor and freezer |
| EP4105486A4 (en) * | 2020-03-31 | 2024-04-10 | Daikin Ind Ltd | Screw compressor, and refrigeration device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09236338A (en) * | 1996-02-29 | 1997-09-09 | Kobe Steel Ltd | Heat pump |
| JP2000146331A (en) * | 1998-11-06 | 2000-05-26 | Mitsubishi Electric Corp | Cooling device for motor for refrigerant compressor |
| JP2007225162A (en) * | 2006-02-22 | 2007-09-06 | Mitsubishi Electric Corp | Refrigerating device |
| JP2011190977A (en) * | 2010-03-15 | 2011-09-29 | Orion Machinery Co Ltd | Controller for temperature-controlled bath |
| JP2011237127A (en) * | 2010-05-11 | 2011-11-24 | Mitsubishi Electric Corp | Refrigerating device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0634209A (en) * | 1992-07-15 | 1994-02-08 | Sanyo Electric Co Ltd | Refrigerating equipment |
| JPH07139820A (en) * | 1993-11-16 | 1995-06-02 | Daikin Ind Ltd | Refrigerating equipment |
| JPH1163775A (en) * | 1997-08-18 | 1999-03-05 | Toshiba Corp | Multi-refrigerator |
| JP3630632B2 (en) * | 2000-12-12 | 2005-03-16 | 株式会社東芝 | refrigerator |
| JP2006329557A (en) * | 2005-05-27 | 2006-12-07 | Kobe Steel Ltd | Screw refrigerating device |
| JP5556499B2 (en) * | 2010-08-18 | 2014-07-23 | 株式会社デンソー | Two-stage boost refrigeration cycle |
| JP5634228B2 (en) * | 2010-11-12 | 2014-12-03 | 三菱電機株式会社 | Screw refrigerator |
| WO2013119483A1 (en) * | 2012-02-07 | 2013-08-15 | Johnson Controls Technology Company | Hermetic motor cooling and control |
-
2014
- 2014-03-31 JP JP2014072075A patent/JP6373034B2/en active Active
- 2014-06-19 TW TW103121138A patent/TWI568982B/en active
- 2014-06-30 CN CN201410302809.XA patent/CN104949366B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09236338A (en) * | 1996-02-29 | 1997-09-09 | Kobe Steel Ltd | Heat pump |
| JP2000146331A (en) * | 1998-11-06 | 2000-05-26 | Mitsubishi Electric Corp | Cooling device for motor for refrigerant compressor |
| JP2007225162A (en) * | 2006-02-22 | 2007-09-06 | Mitsubishi Electric Corp | Refrigerating device |
| JP2011190977A (en) * | 2010-03-15 | 2011-09-29 | Orion Machinery Co Ltd | Controller for temperature-controlled bath |
| JP2011237127A (en) * | 2010-05-11 | 2011-11-24 | Mitsubishi Electric Corp | Refrigerating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015194294A (en) | 2015-11-05 |
| TWI568982B (en) | 2017-02-01 |
| TW201537124A (en) | 2015-10-01 |
| CN104949366A (en) | 2015-09-30 |
| JP6373034B2 (en) | 2018-08-15 |
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