CN103791645A - Refrigeration cycle device - Google Patents
Refrigeration cycle device Download PDFInfo
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- CN103791645A CN103791645A CN201310503950.1A CN201310503950A CN103791645A CN 103791645 A CN103791645 A CN 103791645A CN 201310503950 A CN201310503950 A CN 201310503950A CN 103791645 A CN103791645 A CN 103791645A
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Abstract
The aim of the invention is that a refrigeration cycle device using R32 helps to ensure long-term reliability and maintaining of pressure of a back press chamber, and enables the capability of a condenser to be improved. The refrigeration cycle device comprises a cycle flow path, a first bypass flow path, a cooler, a second bypass flow path, a second open and close valve, and a control mechanism. A compressor, an oil separation device, a first open and close valve, a condenser, a pressure reducing device and an evaporator are connected in order by pipes to form the cycle flow path for cycling of R32 serving as a refrigerant. The first bypass flow path enables the oil separation device and the compressor to be connected by a pipe. The cooler is arranged on the first bypass flow path. The second bypass flow path enables the compressor and the condenser to be connected via a pipe. The second open and close valve is arranged on the second bypass flow path. The control mechanism opens one of the first open and close valve and the second open and close valve and closes the other one.
Description
Technical field
The present invention relates to a kind of refrigerating circulatory device.
Background technology
Difluoromethane is (hereinafter referred to as " R32 ".) the ozone layer destroying coefficient global warming coefficient that is zero, R32 approximately 1/3 left and right that is R410A.Therefore, current by replace widely used R410A in refrigerating circulatory device with R32, can make contributions to the reduction of environmental loads.
For example, in patent documentation 1, record the coolant compressor that uses R32.
Formerly technical literature
Patent documentation
Patent documentation 1: TOHKEMY 2001-115963 communique
Brief summary of the invention
The problem that invention will solve
But, use the coolant compressor of R32 compared with using the coolant compressor of R410A etc., ejection gas temperature is higher.
Therefore, use the coolant compressor of R32 compared with using the coolant compressor of R410A etc., resin parts, machine oil are easily aging, and existence cannot be guaranteed the problem of long-term reliability.
In addition, in the time that ejection gas temperature rises, R32 reduces with respect to the meltage (cold-producing medium meltage) of machine oil, therefore use the coolant compressor of R32 also to have the problem of the pressure decreased of back pressure chamber.
On the other hand, such advantage that the distinctive character of the ejection higher such R32 of gas temperature also can obtain improves the ability of condenser (in air conditioner, the heating efficiency in room in heating running being improved).
Summary of the invention
To this, the object of the invention is to, using in the refrigerating circulatory device of R32, realize guaranteeing of long-term reliability and maintaining of the pressure of back pressure chamber, and make the ability of condenser improve simultaneously.
Solution
Refrigerating circulatory device of the present invention possesses: utilize pipe arrangement that compressor, oil eliminator, the first open and close valve, condenser, decompressor and evaporimeter are connected in sequence and be provided as the circulation stream of the R32 circulation of cold-producing medium; The first bypass flow path of utilizing pipe arrangement that oil eliminator is connected with compressor; Be located at the cooler of the first bypass flow path; The second bypass flow path of utilizing pipe arrangement that compressor is connected with condenser; Be located at the second open and close valve of the second bypass flow path; The controlling organization of either party in the first open and close valve and the second open and close valve being opened and the opposing party is closed.
Invention effect
According to the present invention, using in the refrigerating circulatory device of R32, can realize guaranteeing of long-term reliability and maintaining of the pressure of back pressure chamber, and make the ability of condenser improve simultaneously.
Accompanying drawing explanation
Fig. 1 is the structure key diagram of the related refrigerating circulatory device of present embodiment.
Fig. 2 is the longitudinal sectional view that forms the compressor of refrigerating circulatory device.
Fig. 3 is the amplification view of the compression mechanical part in compressor.
Fig. 4 is the curve map of representation theory ejection gas temperature with respect to the relation of the pressure ratio of R32 and R410A.
Fig. 5 represents that R32 is the cold-producing medium meltage ratio of machine oil and the curve map that sprays the relation between gas temperature with respect to polyol ester.
Fig. 6 represents the curve map of motor efficiency with respect to the relation of the temperature of compressor.
Fig. 7 is the structure key diagram in the time that compression mechanical part is provided with ejection chamber in compressor.
Fig. 8 is the first structure in the time that closed container is provided with annular wall in compressor.
Fig. 9 is the second structure in the time that closed container is provided with annular wall in compressor.
Figure 10 is the structure key diagram of the related refrigerating circulatory device of present embodiment.
Description of reference numerals is as follows:
1 compressor
2 closed containers
2d suction line
2e the first bleed pipe
2f the second bleed pipe
2g recurrent canal
3 compression mechanical parts
4 motor
5 fixed eddy plates
6 convolution whirlpool dishes
The 6a bearing that circles round
7 crank axles
7c fuel feeding path
9 frameworks
9a base bearing
12 euclidean Rings
14 back pressure chambers
15 coolers
18 indoor heat converters
19 decompressors
20 outdoor heat converters
21 first open and close valves
22 second open and close valves
23 overflow valves
24 annular wall
24a inner space
24b outer space
25 oil eliminators
26 controlling organizations
35 first bypass flow path
36 second bypass flow path
37 cover bodies
38 first spaces
39 second spaces
A1 refrigerating circulatory device
A2 refrigerating circulatory device
The specific embodiment
The principal character of the refrigerating circulatory device of present embodiment is, makes sprayed gas and machine oil or is only that machine oil is cooling and return to compressor by cooler, thereby the temperature of compressor is reduced.The refrigerating circulatory device of present embodiment goes among freezer, refrigeration machine, heat-pump-type supplying hot water machine, air conditioner etc.Below, suppose this refrigerating circulatory device is applicable to air conditioner, suitably with reference to accompanying drawing, present embodiment is described.
Fig. 1 is the structure key diagram of the related refrigerating circulatory device of present embodiment.As shown in Figure 1, the related refrigerating circulatory device A1 of present embodiment is connected with compressor 1, oil eliminator 25, the first open and close valve 21, outdoor heat converter 18, decompressor 19 (expansion valve) and indoor heat converter 20 in turn and the circulation stream of formation cold-producing medium.
And then refrigerating circulatory device A1 possesses: the first bypass flow path 35 that oil eliminator 25 is connected with compressor 1; The second bypass flow path 36 that compressor 1 is connected with condenser.It should be noted that, as shown in Figure 1, the second bypass flow path 36 is connected compressor 1 via cross valve 40 with condenser.
In the present embodiment, suppose and use R32 as cold-producing medium, suppose and use the polyol ester system oil that demonstrates good intermiscibility with respect to R32 as machine oil (lubricating oil).
In the time of cooling operation, when refrigerating circulatory device A1 receives the instruction of cooling operation by remote controller, utilize controlling organization 26 to open the second open and close valve 22, and close the first open and close valve 21, the stream that blocking cold-producing medium directly flows into outdoor heat converter 18 (condenser) from oil eliminator 25, thus make cold-producing medium return to compressor 1 from oil eliminator 25.
Cold-producing medium (hot gas) and the machine oil of the HTHP after being compressed by compressor 1 flow into oil eliminator 25 via the first bleed pipe 2e of compressor 1.At this, because the first open and close valve 21 is closed, therefore cold-producing medium does not separate with machine oil in oil eliminator 25, and two sides are flowed to cooler 15.In cooler 15, cold-producing medium and machine oil are cooled, and return to compressor 1 by the first bypass flow path 35.
The cold-producing medium that turns back to compressor 1 separates in the inside of compressor 1 with machine oil, and cold-producing medium sprays from the second bleed pipe 2f, and machine oil accumulates in the bottom of compressor 1.Pass through the second open and close valve 22 and inflow outdoor heat exchanger 18 (condenser) from the cold-producing medium of bleed pipe 2f ejection, by the condensation with the heat exchange heat release of air.Afterwards, cold-producing medium is supplied with to decompressor 19, by isenthalpic expansion when decompressor 19, becomes gas refrigerant and liquid refrigerant under low-temp low-pressure and mixes the gas-liquid two-phase flow forming.The cold-producing medium that becomes this gas-liquid two-phase flow flows into indoor heat converter 20 (evaporimeter).
Liquid refrigerant in indoor heat converter 20 (evaporimeter) is by not shown refrigerant pipe and be installed on the fin of these refrigerant pipes and gasify as gas refrigerant by the heat-absorbing action from air.That is to say, when liquid refrigerant gasification indoor heat converter 20 (evaporimeter) ambient air is carried out cooling, refrigerating circulatory device A1 performance refrigerating function thus.Then the cold-producing medium that, has left indoor heat converter 20 (evaporimeter) is inhaled into the suction line 2d of compressor 1 via cross valve 40.Then, cold-producing medium is compressed to HTHP in compressor 1, and again sprays and circulate circulation stream from the first bleed pipe 2e of compressor 1.
In the time that heating turns round, when kind of refrigeration cycle A1 receives the instruction of heating running by remote controller, utilize controlling organization 26 to close the second open and close valve 22, and open the first open and close valve 21, thereby the cold-producing medium inflow indoor heat exchanger 20 (condenser) that has made to separate with machine oil in oil eliminator 25.
The cold-producing medium (hot gas) of the HTHP after being compressed by compressor 1 flows into oil eliminator 25 from the first bleed pipe 2e of compressor 1.At this, in oil eliminator 25, cold-producing medium separates with machine oil, and machine oil flows to cooler 15.The machine oil being cooled in cooler 15 returns to compressor 1 via the first bypass flow path 35.On the other hand, cold-producing medium inflow indoor heat exchanger 20 (condenser), by the condensation with the heat exchange heat release of air.Afterwards, cold-producing medium is supplied with to decompressor 19, by isenthalpic expansion when decompressor 19, becomes gas refrigerant and liquid refrigerant under low-temp low-pressure and mixes the gas-liquid two-phase flow forming.The cold-producing medium that becomes this gas-liquid two-phase flow flows into outdoor heat converter 18 (evaporimeter).Outdoor heat converter 18 (evaporimeter) is afterwards as explanation in cooling operation.
Then, compressor 1 is described.Fig. 2 is the longitudinal sectional view that forms the compressor of refrigerating circulatory device.Fig. 3 is the amplification view of the compression mechanical part in the compressor of Fig. 2.As shown in Figure 2, the compressor 1 in present embodiment is made up of the hermetic type scroll compressor of high-pressure chamber's mode, thereby uses under the operating condition of wide cut scope.
Compressor 1 possesses: the compression mechanical part 3 being made up of convolution whirlpool dish 6 and fixed eddy plate 5; The motor 4 of portion of drive compression mechanism 3; The closed container 2 that compression mechanical part 3 and motor 4 are received.Top in closed container 2 disposes compression mechanical part 3, disposes motor 4 in bottom.And, at the bottom storage organic oil of closed container 2.
Closed container 2 covers chamber 2b and end chamber 2c forms by being welded with up and down at housing 2a cylindraceous.At lid chamber, 2b is provided with suction line 2d and the first bleed pipe 2e.The first bleed pipe 2e is connected with the ejiction opening 5e of fixed eddy plate 5.The first bleed pipe 2e is fixed on fixed eddy plate 5, and the cold-producing medium flowing out from ejiction opening 5e is not in the interior circulation of closed container 2, and the outside outflow to compressor 1 by the first bleed pipe 2e.
Be provided with the second bleed pipe 2f and recurrent canal 2g in the side of housing 2a.Compression mechanical part 3 possesses: fixed eddy plate 5; Convolution whirlpool dish 6; Be fastened on fixed eddy plate 5 and 6 frameworks that support 9 are coiled in convolution whirlpool by securing members such as bolts.
Fixed eddy plate 5 opposite dispose convolution whirlpool freely of convolution dish 6, form suction chamber 10 and discharge chambe 11 by both.
The outer circumferential side of framework 9 is by welding the internal face that is fixed on closed container 2, and possesses crank axle 7 is supported as rotation base bearing 9a freely.Be linked with the eccentric part 7b of crank axle 7 in the lower face side of convolution whirlpool dish 6.
Between the lower face side of convolution whirlpool dish 6 and framework 9, dispose euclidean Ring 12, euclidean Ring 12 is assemblied in the groove of the lower face side that is formed at convolution whirlpool dish 6 and is formed in the groove of framework 9.Euclidean Ring 12 performance make to circle round whirlpool dish 6 not can from then the eccentric rotary that bears the eccentric part 7b of crank axle 7 carries out the effect of revolution motion.
Motor 4 possesses stator 4a and rotor 4b.Stator 4a is fixed on closed container 2 by be pressed into, welding etc.Rotor 4b can be configured in stator 4a rotatably.Be fixed with crank axle 7 at rotor 4b.
Crank axle 7 possesses main shaft 7a and eccentric part 7b and forms, and is supported by base bearing 9a and the lower bearing 17 of being located at framework 9.Eccentric part 7b is integrally formed prejudicially with respect to the main shaft 7a of crank axle 7, and chimeric with the convolution bearing 6a at the back side that is located at convolution whirlpool dish 6.Crank axle 7 is driven by motor 4, and eccentric part 7b carries out eccentric rotary motion with respect to main shaft 7a, thereby the whirlpool dish 6 that makes to circle round carries out circumnutation.In addition, crank axle 7 is provided with to the fuel feeding path 7c of base bearing 9a, lower bearing 17 and convolution bearing 6a guiding machine oil, is equipped with the fuel feed pump 7d that draws machine oil and guide to fuel feeding path 7c at the axle head of motor 4 sides.
When the crank axle 7 by being driven by motor 4 and the whirlpool that makes to circle round while coiling 6 circumnutation, gas refrigerant guides to the discharge chambe 11 being formed by convolution whirlpool dish 6 and fixed eddy plate 5 from suction line 2d.Then, gas refrigerant makes volume dwindle and is compressed between convolution whirlpool dish 6 and fixed eddy plate 5 along with moving to center position.Gas refrigerant after compression from the ejiction opening 5e of substantial middle that is located at fixed eddy plate 5 by bleed pipe 2e and flowing out to outside.
Then, the action effect of the related refrigerating circulatory device A1 of present embodiment is described.The adiabatic exponent of R32 using as cold-producing medium in refrigerating circulatory device A1 is compared to the cold-producing medium of air conditioner and the adiabatic exponent of widely used R410A is large.
Fig. 4 is the curve map of representation theory ejection gas temperature with respect to the relation of the pressure ratio of R32 and R410A.As shown in Figure 4, ejection gas temperature more rises suction pressure with the pressure ratio that sprays pressure is higher.And the ejection gas temperature of R32 is higher than R410A.Thereby the refrigerating circulatory device A1 using R32 as cold-producing medium is compared with the refrigerating circulatory device using R410A as cold-producing medium, the ejection gas temperature of compressor 1 uprises.Thereby, in closed container by high-pressure chamber's mode of being full of of ejection gas, when using R32 when cold-producing medium uses, the aging easy progress of the resin component in the motor 4 of compressor 1 etc.Correspondingly thereto, in the related refrigerating circulatory device A1 of present embodiment, thereby be formed as the cold-producing medium after ejection and machine oil carry out cooling and make it return to the structure that compressor 1 reduces the temperature of compressor 1.
While illustrating in greater detail, in cooling operation, the cold-producing medium of the HTHP spraying from the first bleed pipe 2e of the compressor 1 shown in Fig. 1 flows into oil eliminator 25, and the machine oil spraying together with cold-producing medium returns to compressor 1 by cooler 15.Now, turn back to the cold-producing medium of compressor 1 and machine oil undertaken by cooler 15 cooling, due to the inflow of this cold-producing medium and machine oil, therefore the temperature of compressor 1 reduces.
In heating running, the cold-producing medium of the HTHP spraying from the first bleed pipe 2e of the compressor 1 shown in Fig. 1 flows into oil eliminator 25, and at this, cold-producing medium separates with the machine oil of ejection together, and machine oil returns to compressor 1 by cooler 15.Less approximately 1 % by weight for refrigerant flow of the amount of machine oil of returning to compressor 1, the cooling effect of compressor 1 is less, but the extraneous gas temperature that the environment temperature of compressor 1 when heating running is winter, by extraneous gas is cooling, temperature reduces compressor 1.On the other hand, the cold-producing medium after separating with machine oil in oil eliminator 25 directly flows into condenser 18, thus the refrigerant gas of high temperature can be supplied with to condenser 18, thus can not make heating ability reduce.Especially,, in the such cold-producing medium with the character that uprises of ejection gas temperature of R32, compared with current widely used R410A, heating ability is improved.
Then, the back pressure control valve 16 of the pressure adjustmenting mechanism as back pressure chamber 14 is described.As shown in Figure 3, be formed with spring reception hole 5f at fixed eddy plate 5.In addition, be formed with through hole 5g in back pressure chamber 14 sides of spring reception hole 5f.In addition, spring reception hole 5f is communicated with via intercommunicating pore 5b with discharge chambe 11.In spring reception hole 5f, to stop up the mode of through hole 5g, carry out pressured by spring 16d to spool 16c.Spring 16d is installed on containment member 16e.And containment member 16e is to be pressed into fixed eddy plate 5 to the mode of dividing in spring reception hole 5f and closed container 2.
Then, the action of back pressure control valve 16 is described.As shown in Figure 2, the machine oil of oil storage place 13 that accumulates in the bottom that is arranged in closed container 2 by the pressure differential of closed container 2 and back pressure chamber 14 by fuel feed pump 7d and fuel feeding path 7c and to each bearing portion fuel feeding.To base bearing 9a and convolution bearing 6a fuel feeding machine oil enter in back pressure chamber 14, at this, dissolve in the cold-producing medium foaming of machine oil and make the pressure rise of back pressure chamber 14.
As shown in Figure 3, if the pressure differential of back pressure chamber 14 and spring reception hole 5f is greater than the depended on pressure of spring 16d, spool 16c opens.Thus, the machine oil in back pressure chamber 14 is supplied with to discharge chambe 11 by groove 5a from intercommunicating pore 5b, sprays together with cold-producing medium from ejiction opening 5e.The pressure of back pressure chamber 14 becomes the value that probably adds the left and right of the value (by the definite steady state value of the spring force of spring 16d) of regulation in suction pressure.
Typically, the cold-producing medium meltage that dissolves in machine oil reduces in the time that ejection gas temperature rises.Fig. 5 represents that R32 is the cold-producing medium meltage ratio of machine oil and the curve map that sprays the relation between gas temperature with respect to polyol ester.It should be noted that, in Fig. 5, the cold-producing medium meltage of the longitudinal axis is than the ratio that represents the cold-producing medium meltage in 86 ℃ of ejection gas temperatures to be made as " 1 ".
As shown in Figure 5, in the time that ejection gas temperature rises, R32 reduces with respect to the meltage (cold-producing medium meltage ratio) of the machine oil of polyol ester system.In the time dissolving in the quantity not sufficient of cold-producing medium of machine oil, the foaming that is the cold-producing medium by having dissolved in machine oil maintains the trend of the pressure decreased of the back pressure chamber 14 of pressure.
Correspondingly thereto, in the present embodiment, reduce the temperature of machine oil by cooler 15, therefore can suppress the reduction of the pressure of back pressure chamber 14.That is to say, the refrigerating circulatory device A1 related according to present embodiment, can make the suction pressure of compressor 1 and the balance of back pressure good, and moderately maintains convolution whirlpool dish 6 pressing forces with respect to fixed eddy plate 5.
Then, the efficiency of the motor using in compressor 1 is described.Fig. 6 represents the curve map of motor efficiency with respect to the relation of the temperature of compressor.As shown in Figure 6, in the time that the temperature of compressor 1 reduces, motor efficiency improves.Thereby the refrigerating circulatory device A1 related according to present embodiment, because the temperature of compressor 1 reduces, therefore can make motor efficiency improve.In addition, air-breathing loss on heating reduces, therefore can make to reduce to the input of compressor 1.
Fig. 7 shows the figure of the structure of the compression mechanical part be provided with overflow valve in the compressor of Fig. 2 time.Scroll compressor, in the time that suction pressure and the pressure ratio (ejection pressure/suction pressure) that sprays pressure are lower, mostly sprayed cold-producing medium before ejiction opening 5e ejection from overflow valve 23.In Fig. 7, be provided with cover body 37 on the top of fixed eddy plate 5, closed container 2 is divided into the first space 38 and second space 39 by cover body 37.The first space 38 is communicated with the first bleed pipe 2e, overflow valve 23, and the cold-producing medium spraying from overflow valve 23 can not flow in closed container 2, and can be from the first bleed pipe 2e ejection.
It should be noted that, also can in second space 39, dispose motor 4, also can replace cover body 37 and by fixed eddy plate 5, closed container 2 is divided into the first space 38 and second space 39.
Fig. 8 is the first structure in the time that closed container is provided with annular wall in the compressor of Fig. 2.Be provided with the annular wall 24 of drum in the bottom of framework 9, second space 39 be divided into inner space 24a and be positioned at the outer space 24b in outside of inner space 24a.
The recurrent canal 2g being connected with the first bypass flow path 35 is to the inner space 24a opening of annular wall 24, and the second bleed pipe 2f being connected with the second bypass flow path 36 is to the outer space 24b opening of annular wall 24.
The cold-producing medium having flowed into from recurrent canal 2g and machine oil by the gap of stator 4a and rotor 4b to the lower guide of compressor 1, machine oil is returned oil, only there is the never outer space 24b of the circumferential groove inflow annular wall 24 of illustrated stator 4a of cold-producing medium that density is lower, and from the second bleed pipe 2f ejection.In addition, under the effect of annular wall 24, the machine oil having dispersed because of the rotation of rotor 4b can directly not flow out from the second bleed pipe 2f.Thereby, can make the oil separation performance in closed container 2 improve.
Fig. 9 is the second structure in the time that closed container is provided with annular wall in the compressor of Fig. 2.The recurrent canal 2g being connected with the first bypass flow path 35 is arranged between motor 4 and oil storage place 13, makes the machine oil flowing into from recurrent canal 2g return oil to oil storage 13.On the other hand, the second bleed pipe 2f being connected with the second bypass flow path 36 is connected between compressor 1 and motor 4.Therefore, only there is the cold-producing medium that density is lower to pass through the gap of motor 4, and spray from the second bleed pipe 2f being connected with the second bypass flow path 36, therefore can make the oil separation performance in closed container improve.
Then, describe about the situation that present embodiment is applicable to Rotary Compressor.Figure 10 is the structure key diagram of the related refrigerating circulatory device of present embodiment.
In the refrigerating circulatory device A3 of Figure 10, be equipped with Rotary Compressor.In the closed container 2 of Rotary Compressor, also can be provided with the first bleed pipe 2e, the second bleed pipe 2f and recurrent canal 2g, thereby also can realize in the compressor except scroll compressor.
As described above, refrigerating circulatory device of the present invention possesses: utilize pipe arrangement that compressor 1, oil eliminator 25, the first open and close valve 21, condenser, decompressor 19 and evaporimeter are connected successively and be provided as the circulation stream of the R32 circulation of cold-producing medium; The first bypass flow path 35 of utilizing pipe arrangement that oil eliminator 25 is connected with compressor 1; Be located at the cooler 15 of the first bypass flow path 35; The second bypass flow path 36 of utilizing pipe arrangement that compressor 1 is connected with condenser; Be located at the second open and close valve 22 of the second bypass flow path 36; The controlling organization 26 of either party in the first open and close valve 21 and the second open and close valve 22 being opened and the opposing party is closed.
In addition, refrigerating circulatory device of the present invention, in the time of cooling operation, is closed the first open and close valve 21, and the second open and close valve 22 is opened, and in the time that heating turns round, the first open and close valve 21 is opened, and the second open and close valve 22 is closed.
In addition, in refrigerating circulatory device of the present invention, compressor 1 has: compression mechanical part 3; Motor 4; The first space 38 flowing into for the cold-producing medium spraying from compression mechanical part 3; The second space 39 that motor 4 is positioned at; The cover body 37 that the first space 38 and second space 39 are divided, circulation stream is connected with the first space 38, and the first bypass flow path 35 and the second bypass flow path 36 are connected with second space 39.
In addition, in refrigerating circulatory device of the present invention, compressor 1 has the annular wall 24 that second space 39 is divided into inner space 24a and is positioned at the outer space 24b in the outside of inner space 24a, the first bypass flow path 35 is connected with inner space 24a, and the second bypass flow path 36 is connected with outer space 24b.
In addition, in refrigerating circulatory device of the present invention, compressor 1 has oil storage place 13, the first bypass flow path 35 and is connected between motor 4 and oil storage place 13 in bottom, and the second bypass flow path 36 is connected between motor 4 and compression mechanical part 3.
Claims (5)
1. a refrigerating circulatory device, wherein,
Described refrigerating circulatory device possesses:
Circulation stream, it is by utilizing pipe arrangement that compressor, oil eliminator, the first open and close valve, condenser, decompressor and evaporimeter are connected in sequence, and is provided as the R32 circulation of cold-producing medium;
The first bypass flow path, it utilizes pipe arrangement that described oil eliminator is connected with described compressor;
Cooler, it is located at described the first bypass flow path;
The second bypass flow path, it utilizes pipe arrangement that described compressor is connected with described condenser;
The second open and close valve, it is located at described the second bypass flow path;
Controlling organization, it is opened the either party in described the first open and close valve and described the second open and close valve and the opposing party is closed.
2. refrigerating circulatory device according to claim 1, is characterized in that,
In the time of cooling operation, described the first open and close valve is closed, and described the second open and close valve is opened,
In the time that heating turns round, described the first open and close valve is opened, and described the second open and close valve is closed.
3. refrigerating circulatory device according to claim 1 and 2, is characterized in that,
Described compressor has: compression mechanical part; Motor; For the first space flowing into from the cold-producing medium of described compression mechanical part ejection; The second space that described motor is positioned at; The cover body that described the first space and described second space are divided,
Described circulation stream is connected with described the first space,
Described the first bypass flow path and described the second bypass flow path are connected with described second space.
4. refrigerating circulatory device according to claim 3, is characterized in that,
Described compressor has the annular wall that described second space is divided into inner space and is positioned at the described outer space in the outside of described inner space,
Described the first bypass flow path is connected with described inner space,
Described the second bypass flow path is connected with described outer space.
5. refrigerating circulatory device according to claim 4, is characterized in that,
Described compressor has oil storage place in bottom,
Described the first bypass flow path is connected between described motor and described oil storage place, and described the second bypass flow path is connected between described motor and described compression mechanical part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012237410A JP5988828B2 (en) | 2012-10-29 | 2012-10-29 | Refrigeration cycle equipment |
| JP2012-237410 | 2012-10-29 |
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| CN103791645A true CN103791645A (en) | 2014-05-14 |
| CN103791645B CN103791645B (en) | 2016-01-06 |
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| CN107429949A (en) * | 2015-03-27 | 2017-12-01 | 三菱电机株式会社 | Refrigerating circulatory device |
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| JP6495048B2 (en) | 2015-02-26 | 2019-04-03 | 三菱重工サーマルシステムズ株式会社 | Oil return circuit and oil return method for refrigeration cycle |
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| JPH05312416A (en) * | 1992-05-06 | 1993-11-22 | Mitsubishi Heavy Ind Ltd | Air conditioner |
| US6122924A (en) * | 1999-06-30 | 2000-09-26 | Carrier Corporation | Hot gas compressor bypass using oil separator circuit |
| CN1485584A (en) * | 2002-08-30 | 2004-03-31 | ������������ʽ���� | Geogrid or mesh structure |
| KR20050114587A (en) * | 2004-06-01 | 2005-12-06 | 삼성전자주식회사 | Air conditioner |
| WO2011121634A1 (en) * | 2010-03-29 | 2011-10-06 | 三菱電機株式会社 | Air conditioning apparatus |
| JP2012097638A (en) * | 2010-11-01 | 2012-05-24 | Daikin Industries Ltd | Compressor and refrigerating apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429949A (en) * | 2015-03-27 | 2017-12-01 | 三菱电机株式会社 | Refrigerating circulatory device |
| CN107429949B (en) * | 2015-03-27 | 2020-01-17 | 三菱电机株式会社 | Refrigeration cycle device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014085104A (en) | 2014-05-12 |
| CN103791645B (en) | 2016-01-06 |
| JP5988828B2 (en) | 2016-09-07 |
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