CN106796055B - Heat source side unit and refrigerating circulatory device - Google Patents
Heat source side unit and refrigerating circulatory device Download PDFInfo
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- CN106796055B CN106796055B CN201480082492.1A CN201480082492A CN106796055B CN 106796055 B CN106796055 B CN 106796055B CN 201480082492 A CN201480082492 A CN 201480082492A CN 106796055 B CN106796055 B CN 106796055B
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- 239000003507 refrigerant Substances 0.000 claims abstract description 220
- 230000006835 compression Effects 0.000 claims description 44
- 238000007906 compression Methods 0.000 claims description 44
- 239000012530 fluid Substances 0.000 claims 2
- 238000000926 separation method Methods 0.000 abstract description 3
- 238000002347 injection Methods 0.000 description 18
- 239000007924 injection Substances 0.000 description 18
- 239000007788 liquid Substances 0.000 description 15
- 238000001816 cooling Methods 0.000 description 11
- 238000003860 storage Methods 0.000 description 11
- 238000005057 refrigeration Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 238000009833 condensation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Heat source side unit (200) includes compressor (1)；The oil eliminator (4) of the refrigerant and oil separation that will be discharged from compressor (1), the oil eliminator flow out refrigerant from refrigerant outflow portion (4a), flow out oil from oily outflow portion (4b)；The first flow path (40a) being connected to refrigerant outflow portion (4a)；The second flow path (40b) being connected to oily outflow portion (4b)；With the heat source side heat exchanger (5) for connecting and making refrigerant or the multiple heat exchanger (5b) of oil progress heat exchange with first flow path (40a) and second flow path (40b)；And to the flow passage selector device (51a, 53a) that the connection of multiple heat exchanger (5) and first flow path (40a) or second flow path (40b) switches over.
Description
Technical field
The present invention relates to heat source side unit and refrigerating circulatory devices.
Background technique
In the past, have and the oil isolated by oil eliminator is cooled down and the oil cooled is made to return to this knot of compressor
The refrigerating plant of structure is known (referring to patent document 1).For example, in the refrigerating plant of patent document 1, by oil eliminator point
The oil separated out is cooled in the air-cooled type oil cooler using a part of condenser, hereafter in the cooling oil cooler of refrigerant
In be cooled.
Citation
Patent document
Patent document 1: Japanese Unexamined Patent Publication 4-203764 bulletin (page 2, Fig. 1)
Summary of the invention
Subject to be solved by the invention
In the refrigerating plant of patent document 1, a part of condenser is constituted as air-cooled type oil cooler, therefore,
Such as when not needing to carry out the cooling of oil, a part of condenser is not functioned, and leads to the heat-transfer area of condenser
Product utilization not yet in effect.It, only sometimes cannot be fully by air-cooled type oil cooler also, in the refrigerating plant of patent document 1
The cooling of oil is carried out, therefore, is provided with the cooling oil cooler of refrigerant for the cooling for carrying out oil using refrigerant.Do not need into
The cooling of row oil or whens only by air-cooled type oil cooler can carry out the cooling etc. of oil, the refrigerant cooling oil of patent document 1
Cooler becomes unwanted structure.
The present invention makes using project as described above as background, and its object is to obtain a kind of heat source side unit and system
SAPMAC method device makes refrigerant or oil carry out heat exchange by efficiently using the heat transfer area of heat source side heat exchanger, thus
The coefficient of performance of refrigerating circulatory device can be improved.
Solution for solving the problem
Heat source side unit of the invention includes compressor；Oil eliminator, the system that the oil eliminator will be discharged from compressor
Cryogen and oil separation, flow out refrigerant from refrigerant outflow portion, flow out oil from oily outflow portion；First flow path, described first
Flow path is connected to refrigerant outflow portion；Second flow path, the second flow path are connected to oily outflow portion；Heat source side heat exchanger, institute
State heat source side heat exchanger have connect and makes with first flow path and second flow path refrigerant or oil progress heat exchange it is multi-joint
Formula heat exchanger；And flow passage selector device, the flow passage selector device is to multiple heat exchanger and first flow path or second
The connection of flow path switches over, and sends out when the multiple heat exchanger is connected to the first flow path as refrigerant heat exchanger
Function is waved, is functioned when being connected to the second flow path as oil heat exchanger.
In addition, the heat source side heat exchanger has multiple multiple heat exchanges in another program of the invention
Device, each of multiple multiple heat exchangers is respectively via the first flow path and the second flow path and the system
Cryogen outflow portion and the oily outflow portion connect side by side, and the flow passage selector device is to multiple multiple heat exchangers
The connection of each and the first flow path or the second flow path switch over.
In addition, in another program of the invention, multiple multiple heat exchangers include different more of heat transfer area
Connection formula heat exchanger.
In addition, the heat source side heat exchanger has to be connected with the refrigerant outflow portion in another program of the invention
The refrigerant heat exchanger led to and refrigerant is made to carry out heat exchange.
In addition, in another program of the invention, the heat transfer area of the refrigerant heat exchanger and multiple heat
The heat transfer area of exchanger is different.
In addition, the heat transfer area of the refrigerant heat exchanger is than the multiple warm in another program of the invention
The heat transfer area of exchanger is big.
In addition, in another program of the invention, the multiple heat exchanger and refrigerant heat exchanger one
Ground is formed.
In addition, the multiple heat exchanger is arranged in the refrigerant heat exchanger in another program of the invention
Lower section.
In addition, the compressor includes rudimentary compression unit, intergrade and advanced pressure in another program of the invention
Contracting portion.
In addition, the heat source side unit has will be in the heat source side heat exchanger in another program of the invention
A part of chilled refrigerant is ejected into the energy-saving appliance flow path of the intergrade of the compressor, in the energy-saving appliance flow path
Middle part is provided with the economizer expansion dress for making a part expansion of the chilled refrigerant in the heat source side heat exchanger
Set and make the refrigerant expanded in the economizer expansion device with it is chilled in the heat source side heat exchanger
The energy-saving appliance of refrigerant progress heat exchange.
Refrigerating circulatory device of the invention includes heat source side unit described in any one of above-mentioned each scheme；And have
Expansion device and using side heat exchanger utilize side unit, the expansion device make in the heat source side heat exchanger into
Gone heat exchange refrigerant expansion, it is described using side heat exchanger make the refrigerant expanded in the expansion device carry out
Heat exchange.
In addition, the refrigerating circulatory device also includes the detection heat source side unit in another program of the invention
The temperature sensor of external outdoor temperature；And the flow path switching is carried out using the testing result of the temperature sensor
The control device of the control of device, the control device control the flow passage selector device, so that the outdoor temperature
Higher, the area for making the oil carry out heat exchange of the multiple heat exchanger is bigger.
Refrigerating circulatory device of the invention includes compressor；Oil eliminator, the oil eliminator will be arranged from the compressor
Refrigerant and oil separation out, flow out refrigerant from refrigerant outflow portion, flow out oil from oily outflow portion；First flow path, institute
First flow path is stated to be connected to the refrigerant outflow portion；Second flow path, the second flow path are connected to the oily outflow portion；Heat source
Side heat exchanger, the heat source side heat exchanger, which has, to be connect with the first flow path and the second flow path and makes refrigerant
Or oil carries out the multiple heat exchanger of heat exchange；Flow passage selector device, the flow passage selector device hand over the multiple heat
Parallel operation and the connection of the first flow path or the second flow path switch over；Expansion device, the expansion device make described
The refrigerant expansion of heat exchange has been carried out in heat source side heat exchanger；And side heat exchanger is utilized, it is described to utilize side heat exchange
Device makes the refrigerant expanded in the expansion device carry out heat exchange, the multiple heat exchanger and the first flow path
It functions when connection as refrigerant heat exchanger, is functioned when being connected to the second flow path as oil heat exchanger.
Invention effect
According to the present invention, the heat transfer area for efficiently using heat source side heat exchanger makes refrigerant or oil carry out heat exchange, because
This, can be improved the coefficient of performance of refrigerating circulatory device.
Detailed description of the invention
Fig. 1 is the figure for schematically recording the example of refrigerating circulatory device of embodiments of the present invention 1.
Fig. 2 is the relationship indicated between the function and outdoor temperature of the multiple heat exchanger of embodiments of the present invention 1
Example figure.
Fig. 3 is the figure of the example of the movement of refrigerating circulatory device when illustrating normal outdoor temperature.
Fig. 4 is the figure of the example of the movement of refrigerating circulatory device when illustrating high outdoor temperature.
Fig. 5 is the figure of the example of the movement of refrigerating circulatory device when illustrating low outdoor temperature.
Fig. 6 is figure relevant to the variation 1 of embodiment 1, is the dynamic of opening and closing device when illustrating normal outdoor temperature
The figure of the example of work.
Fig. 7 is figure relevant to the variation 1 of embodiment 1, is the movement of opening and closing device when illustrating high outdoor temperature
Example figure.
Fig. 8 is figure relevant to the variation 1 of embodiment 1, is the movement of opening and closing device when illustrating low outdoor temperature
Example figure.
Fig. 9 is figure relevant to the variation 2 of embodiment 1, is the function and outdoor temp for indicating multiple heat exchanger
The figure of the example of relationship between degree.
Figure 10 is figure relevant to the variation 3 of embodiment 1, is the example for schematically recording refrigerating circulatory device
Figure.
Figure 11 is figure relevant to the variation 3 of embodiment 1, is the function and outdoor temp for indicating multiple heat exchanger
The figure of the example of relationship between degree.
Figure 12 is figure relevant to the variation 4 of embodiment 1, is the function and outdoor temp for indicating multiple heat exchanger
The figure of the example of relationship between degree.
Figure 13 is the figure for schematically recording the example of refrigerating circulatory device of embodiments of the present invention 2.
Specific embodiment
Hereinafter, being described with reference to embodiments of the present invention.In addition, in the various figures, for same or equivalent part,
Identical appended drawing reference is marked, its explanation is suitably omitted or simplified.In addition, the structure described in each figure, shape, size with
And configuration etc. can suitably change within the scope of the invention.
Embodiment 1.
[refrigerating circulatory device]
Fig. 1 is the figure for schematically recording the example of refrigerating circulatory device of embodiments of the present invention 1.As shown in Figure 1,
The refrigerating circulatory device 300 of the embodiment, which has, utilizes side unit 100 and heat source side unit 200.Utilize side unit 100 and heat
Source unit 200 is connected by piping, forms the refrigerant circulation loop 400 for refrigerant circulation.It should be noted that in the reality
It applies in the refrigerating circulatory device 300 of mode, the biggish refrigerant of difference of enthalpy when using adiabatic compressions such as such as R32 or R410A.
In addition, the heat source side unit 200 of the refrigerating circulatory device 300 of the embodiment includes the oil stream road 410 of fuel feeding flowing；For system
The multiple heat exchange flow path 420 that cryogen or oil selectively flow；And the system that will be flowed in refrigerant circulation loop 400
The injection flow path 430 that a part of cryogen is sprayed to compressor 1.It should be noted that in Fig. 1, refrigerant circulation loop 400
It is illustrated with solid line, oil stream road 410 is illustrated with dotted line, and multiple heat exchange flow path 420 is illustrated with single dotted broken line.
[utilizing side unit]
There is opening and closing device 13, expansion device 12 using side unit 100 and utilize side heat exchanger 2, they are by being piped
Connection.13 pairs of opening and closing device opening and closings are switched over to control refrigerant to expansion device 12 and utilize the logical of side heat exchanger 2
It crosses, such as is made of solenoid valve etc..It should be noted that opening and closing device 13 also can be omitted.Expansion device 12 keeps refrigerant swollen
It is swollen, for example, being made of capillary or the electronic expansion valve etc. that aperture can be changed.For example make to freeze using side heat exchanger 2
Agent and air carry out heat exchange.For example, being provided with to using side heat exchanger 2 using near side heat exchanger 2 and guiding sky
The pressure fan (illustration omitted) of gas, to promote to utilize the heat exchange in side heat exchanger 2.
[heat source side unit]
Heat source side unit 200 have compressor 1, oil eliminator 4, heat source side heat exchanger 5 and liquid storage device 7, they by
Piping connection.Compressor 1 compresses refrigerant, e.g. includes the twin-stage spiral shell of rudimentary compression unit 1a and advanced compression portion 1b
Bar compressor.Between rudimentary compression unit 1a and advanced compression portion 1b, it is provided with the intergrade 1c that refrigerant can be injected.It is rudimentary
Compression unit 1a sucks refrigerant gas from using side heat exchanger 2, is discharged after carrying out first order compression to intergrade 1c.Advanced pressure
Contracting portion 1b sucks refrigerant gas from intergrade 1c, is discharged after carrying out second level compression to oil eliminator 4.It should be noted that
Compressor 1 applied to the embodiment is not limited to above-mentioned two-stage screw compressor.For example, compressor 1 is either whirlpool
Compressor etc. is revolved using the compressor of other principles, is also possible to the compressor by more than level-one or three-level constituting.In compressor 1
Used in components include in terms of temperature exist limitation components.Therefore, for the refrigerant being discharged from compressor 1
Temperature is equipped with limitation.The limit temperature for the discharging refrigerant being discharged from compressor 1 is, for example, 85 degree, but limit temperature is according to compression
Specification of machine 1 etc. and change, be not limited to 85 degree.It is, for example, to limit that compressor 1, which is controlled so as to make the temperature of discharging refrigerant,
Below temperature.It should be noted that compressor 1 is also possible to the driving such as the frequency converter as illustration omitted and can adjust and turn
The compressor of speed.In addition, heat source side unit 200 has the temperature that the outdoor temperature to the outside of heat source side unit 200 is detected
It spends sensor 70 and carries out the control device 72 of heat source side unit 200 integrally controlled.Control device 72 for example utilizes temperature
The outdoor temperature etc. that sensor 70 detects, to compressor 1, injection expansion device 50 and opening and closing device 51a, 52a, 53a,
54a, 51b, 52b, 53b, 54b and 55 etc. are controlled.
Oil eliminator 4 separates the refrigerant being discharged from compressor 1 and oil.Oil eliminator 4 includes the refrigeration for making to isolate
The refrigerant outflow portion 4a of the agent outflow and oily outflow portion 4b for going out the oil stream isolated.Heat source side heat exchanger 5 has system
Cryogen heat exchanger 5a and more than one multiple heat exchanger 5b.Refrigerant heat exchanger 5a makes to be separated by oil eliminator 4
Refrigerant and air out carries out heat exchange.Multiple heat exchanger 5b make the refrigerant isolated by oil eliminator 4 or oil with
Air carries out heat exchange.In this embodiment, to be integrally formed with a refrigerant heat exchanger 5a and refrigerant heat
Two multiple heat exchanger 5b (the first multiple heat exchanger 5b1 and the second multiples of the lower section setting of exchanger 5a
Heat exchanger 5b2) the example of heat source side heat exchanger 5 be illustrated.It should be noted that multiple heat exchanger 5b both may be used
The top of refrigerant heat exchanger 5a is arranged in, also can be set in the top and lower section of refrigerant heat exchanger 5a, but
By the way that multiple heat exchanger 5b to be arranged in the lower section of refrigerant heat exchanger 5a, being used as in multiple heat exchanger 5b makes oil
When the oil heat exchanger for carrying out heat exchange with air works, the heat dissipation of oil can be efficiently carried out.Refrigerant heat exchanger 5a
There is different heat transfer areas with multiple heat exchanger 5b.Refrigerant heat exchanger 5a can have than multiple heat exchanger 5b
Small heat transfer area, but by making refrigerant heat exchanger 5a that there is the heat transfer area bigger than multiple heat exchanger 5b, it can
It reliably ensure the heat transfer area for making refrigerant carry out heat exchange.6 heat source side heat exchanger 5 of pressure fan guides air, setting
Near heat source side heat exchanger 5.Liquid storage device 7 has the function for accumulating the liquid refrigerant flowed out from heat source side heat exchanger 5
Energy.In addition, liquid storage device 7 also can be omitted.
[refrigerant circulation loop]
Refrigerant circulation loop 400 is by the system of compressor 1, the refrigerant flow path of oil eliminator 4, heat source side heat exchanger 5
Cryogen heat exchanger 5a, liquid storage device 7, opening and closing device 13, expansion device 12 and using side heat exchanger 2 with piping connection cyclization
Shape is recycled for refrigerant in inside.Refrigerant and oil are separated by oil eliminator 4 by the compressed refrigerant of compressor 1.By oil
The refrigerant that separator 4 is isolated flows out from refrigerant outflow portion 4a and is flowed into refrigerant heat exchanger 5a.In refrigerant heat
Heat exchange and chilled refrigerant are carried out in exchanger 5a is flowed into expansion device via liquid storage device 7 and opening and closing device 13
12.The refrigerant expanded in expansion device 12 is evaporated using heat exchange is carried out in side heat exchanger 2, and is flowed into pressure
Contracting machine 1 is re-compressed.
[oil stream road]
Oil stream road 410 connects the oily outflow portion 4b and compressor 1 of oil eliminator 4.Middle part on oil stream road 410 is arranged
There are opening and closing device 55, check valve 56 and check valve 58.The oil isolated by oil eliminator 4 for example by opening and closing device 55, this
Compressor 1 is injected by check valve 56 afterwards.In example preferably, the oil of check valve 56 is passed through in compressor
1 front is branched and is injected into the rudimentary compression unit 1a and advanced compression portion 1b of compressor 1.In rudimentary compression unit 1a and height
Be provided with check valve 58 between grade compression unit 1b, be configured to oil flowed to without going past oil stream road 410 from advanced compression portion 1b it is rudimentary
Compression unit 1a.55 pairs of opening and closing device opening and closing switch over control flowed in oil stream road 410 oil by, for example, by electromagnetism
Valve etc. is constituted.Check valve 56 prevents oil from compressor 1 to the first multiple heat exchanger 5b1 and the second multiple heat exchanger
5b2 is flow backwards.
[injection flow path]
It sprays flow path 430 and a part for having carried out the refrigerant of heat exchange in heat source side heat exchanger 5 is ejected into pressure
Contracting machine 1.Spray flow path 430 from branch between the liquid storage device 7 and opening and closing device 13 of refrigerant circulation loop 400 and with compressor 1
Intergrade 1c connection.The middle part of injection flow path 430 is provided with injection expansion device 50.Injection with expansion device 50 by
The electronic expansion valve that aperture can be changed is constituted, and is configured to when needing to carry out the refrigerant injection of liquid refrigerant, can be with
A part of refrigerant is ejected into compressor 1.In this embodiment, refrigerant injection is only carried out in the following cases, i.e.,
Only by the oil spurts of injection oil, lead to the case where temperature for the refrigerant being discharged from compressor 1 is more than limit temperature.For example,
When refrigerating circulatory device 300 transiently operates or when the outdoor temperature in the outside of heat source side unit 200 is very high, exist only
It cannot inhibit the phenomenon that the rising that gas refrigerant temperature is discharged by oil spurts, carry out refrigerant injection in this case.
In addition, referred to " when refrigerating circulatory device 300 transiently operates " for example refrigerating circulatory device 300 just start running after or
Whens the operating condition change dramatically of refrigerating circulatory device 300 is equal.
[multiple heat exchange flow path]
Multiple heat exchange flow path 420 is provided with " flow passage selector device " and multiple heat exchanger 5b in middle part,
From the oil refrigerant outflow portion 4a of oil eliminator 4 refrigerant flowed out or flowed out from oily outflow portion 4b, selectively flow to more
Connection formula heat exchanger 5b.First flow path 40a is connected to the refrigerant outflow portion 4a of oil eliminator 4, and second flow path 40b is separated with oil
The oily outflow portion 4b of device 4 is connected to.Moreover, multiple heat exchanger 5b is connect with first flow path 40a and second flow path 40b.?
" flow passage selector device " is provided between multiple heat exchanger 5b and first flow path 40a and second flow path 40b." flow path is cut
Changing device " selectively communicates with multiple heat exchanger 5b with first flow path 40a or second flow path 40b.Preferably
Example in, refrigerant or oil selectively flow to the first multiple heat exchanger 5b1 and the second multiple heat exchange respectively
Each of device 5b2.
First multiple heat exchanger 5b1 is connect via opening and closing device 53b with first flow path 40a.In addition, the first multiple
Heat exchanger 5b1 is connect via opening and closing device 51b with second flow path 40b.Opening and closing device 53b and opening and closing device 51b are equivalent to
" flow passage selector device " of the invention.Opening and closing device 53b and opening and closing device 51b also could alternatively be triple valve etc..
Second multiple heat exchanger 5b2 is connect via opening and closing device 53a with first flow path 40a.In addition, the second multiple
Heat exchanger 5b2 is connect via opening and closing device 51a with second flow path 40b.Opening and closing device 53a and opening and closing device 51a are equivalent to
" flow passage selector device " of the invention.Opening and closing device 53a and opening and closing device 51a also could alternatively be triple valve etc..
When refrigerant and air have carried out heat exchange in the first multiple heat exchanger 5b1, heat exchange has been carried out
Refrigerant converges via opening and closing device 54b with the refrigerant flowed in refrigerant circulation loop 400.In addition, when more than first
When oil and air have carried out heat exchange in connection formula heat exchanger 5b1, the oil for having carried out heat exchange flows to oil via opening and closing device 52b
Flow path 410.Opening and closing device 54b and opening and closing device 52b also could alternatively be triple valve etc..
When refrigerant and air have carried out heat exchange in the second multiple heat exchanger 5b2, heat exchange has been carried out
Refrigerant converges via opening and closing device 54a with the refrigerant flowed in refrigerant circulation loop 400.In addition, when more than second
When oil and air have carried out heat exchange in connection formula heat exchanger 5b2, the oil for having carried out heat exchange flows to oil via opening and closing device 52a
Flow path 410.Opening and closing device 54a and opening and closing device 52a also could alternatively be triple valve etc..In addition, flow through opening and closing device 54a or
The refrigerant of opening and closing device 54b converges by check valve 57 with the refrigerant flowed in refrigerant circulation loop 400, refrigerant
It will not be flow backwards from refrigerant circulation loop 400 to the first multiple heat exchanger 5b1 or the second multiple side heat exchanger 5b2.
[action example of the refrigerating circulatory device of embodiment 1]
Then, illustrate the example of the movement of the refrigerating circulatory device 300 of the embodiment.Fig. 2 is to indicate reality of the invention
Apply the figure of the example of the relationship between the function and outdoor temperature of the multiple heat exchanger of mode 1.In addition, shown in Fig. 2
In example, the range of normal outdoor temperature is 25 degree~35 degree, and the range of high outdoor temperature is 35 degree~40 degree, low outdoor temperature
Range be 25 degree hereinafter, but normally the range of outdoor temperature, high outdoor temperature and low outdoor temperature is filled according to refrigeration cycle
It sets 300 specification etc. to be suitably determined, is not limited to above-mentioned example.
As shown in Fig. 2, correspondingly changing multiple with outdoor temperature in refrigerating circulatory device 300 preferably
The function of heat exchanger 5b.That is, the first multiple heat exchanger 5b1 makees in the case where outdoor temperature is normal outdoor temperature
It is functioned for refrigerant heat exchanger, the second multiple heat exchanger 5b2 is functioned as oil heat exchanger.In addition,
In the case that outdoor temperature is the high outdoor temperature higher than normal outdoor temperature, the first multiple heat exchanger 5b1 and second
Multiple heat exchanger 5b2 is functioned as oil heat exchanger.In addition, being lower than normal outdoor temperature low in outdoor temperature
In the case where outdoor temperature, the first multiple heat exchanger 5b1 and the second multiple heat exchanger 5b2 are handed over as refrigerant heat
Parallel operation functions.
[movement of refrigerating circulatory device when normal outdoor temperature]
Firstly, illustrating the example of the movement of the refrigerating circulatory device 300 when outdoor temperature is normal outdoor temperature.Fig. 3 is
The figure of the example of the movement of refrigerating circulatory device when illustrating normal outdoor temperature.In addition, solid arrow indicates system in Fig. 3
The flowing of cryogen, dotted arrow indicate the flowing of oil.As shown in figure 3, in the case where outdoor temperature is normal outdoor temperature, it will
Opening and closing device 51a, 52a, 53b and 54b are set as " opening ", and opening and closing device 51b, 52b, 53a, 54a and 55 are set as " closing
It closes ".At this point, the refrigerant and oil isolated by oil eliminator 4 flow as described below.That is, isolated by oil eliminator 4
Refrigerant is flowed into refrigerant heat exchanger 5a and carries out heat exchange, also, by the opening and closing device of multiple heat exchange flow path 420
53b is flowed into the first multiple heat exchanger 5b1 and carries out heat exchange.Hot friendship has been carried out in the first multiple heat exchanger 5b1
The refrigerant changed is flowed by the opening and closing device 54b of multiple heat exchange flow path 420 and in refrigerant circulation loop 400
Refrigerant converges.The refrigerant of heat exchange is carried out in refrigerant heat exchanger 5a and in the first multiple heat exchanger
The refrigerant that heat exchange has been carried out in 5b1 is flowed into expansion device 12 by liquid storage device 7.
In addition, the oil isolated by oil eliminator 4 is flowed by the opening and closing device 51a of multiple heat exchange flow path 420
Second multiple heat exchanger 5b2 carries out heat exchange.The oil of heat exchange has been carried out in the second multiple heat exchanger 5b2, has been passed through
The opening and closing device 52a for crossing multiple heat exchange flow path 420 flows through oil stream road 410 and is ejected into compressor 1.That is, in the embodiment party
In the example of formula, heat exchange is carried out in the second multiple heat exchanger 5b2 and the oil that has been cooled, sprayed by check valve 56
Advanced compression portion 1b is ejected into rudimentary compression unit 1a, and by check valve 56 and check valve 58.
As described above, in this embodiment, in the case where outdoor temperature is normal outdoor temperature, the second multiple heat
Exchanger 5b2 is functioned as the oil heat exchanger for making oil carry out heat exchange, and the first multiple heat exchanger 5b1, which is used as, to be made to make
The refrigerant heat exchanger that cryogen carries out heat exchange functions.In the case where outdoor temperature is normal outdoor temperature, only exist
Cooling oil in second multiple heat exchanger 5b2, and compressor 1 is cooled down using the oil cooled, thus, it is possible to by compressor
The temperature of the refrigerant of 1 discharge inhibits below limit temperature.Moreover, because the first multiple heat exchanger 5b1 as with system
The refrigerant heat exchanger that cryogen carries out heat exchange functions, therefore, it is possible to use the big heat transfer of heat source side heat exchanger 5
Area carries out heat exchange between refrigerant and air.As a result, being normal outdoor in outdoor temperature in this embodiment
In the case where temperature, the condensation temperature of refrigerant can be reduced, so, the compression power of compressor 1 can be reduced.Therefore, exist
In the embodiment, (cooling capacity/compressor compression of refrigerating circulatory device is dynamic for the coefficient of performance of refrigerating circulatory device 300
Power) it improves.
[movement of refrigerating circulatory device when high outdoor temperature]
Then, illustrate the refrigerating circulatory device 300 when outdoor temperature is the high outdoor temperature higher than normal outdoor temperature
The example of movement.Fig. 4 is the figure of the example of the movement of refrigerating circulatory device when illustrating high outdoor temperature.In addition, in Fig. 4,
Solid arrow indicates the flowing of refrigerant, and dotted arrow indicates the flowing of oil.As shown in figure 4, being high outdoor temp in outdoor temperature
In the case where degree, opening and closing device 51a, 51b, 52a and 52b are set as " opening ", by opening and closing device 53a, 53b, 54a, 54b with
And 55 be set as " closing ".At this point, the refrigerant and oil isolated by oil eliminator 4 flow as described as follows.That is, by oil
Refrigerant heat exchanger 5a is flowed into from the refrigerant that device 4 is isolated and carries out heat exchange, and is flowed into expansion dress by liquid storage device 7
Set 12.
In addition, the oil isolated by oil eliminator 4 passes through the opening and closing device 51a of multiple heat exchange flow path 420 and opens
Device 51b is closed, carries out heat exchange in the first multiple heat exchanger 5b1 and the second multiple heat exchanger 5b2.First
The oil of heat exchange is carried out in multiple heat exchanger 5b1 and the second multiple heat exchanger 5b2, by multiple heat exchange
The opening and closing device 52a and opening and closing device 52b of flow path 420 converge to oil stream road 410 and are ejected into compressor 1.That is, in the implementation
In the example of mode, in the first multiple heat exchanger 5b1 and the second multiple heat exchanger 5b2 carry out heat exchange and by
The oil cooled is ejected into rudimentary compression unit 1a by check valve 56, and is ejected into height by check valve 56 and check valve 58
Grade compression unit 1b.
As described above, in this embodiment, in the case where outdoor temperature is high outdoor temperature, the first multiple heat is handed over
Parallel operation 5b1 and the second multiple heat exchanger 5b2 is functioned as the oil heat exchanger for making oil carry out heat exchange.In outdoor
It is cold in the first multiple heat exchanger 5b1 and the second multiple heat exchanger 5b2 in the case that temperature is high outdoor temperature
Oily, and compressor 1 is cooled down using the oil cooled, thus, it is possible to which the temperature of the discharge gas refrigerant of compressor 1 is pressed down
System is below limit temperature.
In addition, in this embodiment, in the case where outdoor temperature is high outdoor temperature, making the first multiple heat exchange
Device 5b1 and the second multiple heat exchanger 5b2 is functioned as the oil heat exchanger for making oil carry out heat exchange, therefore, heat
The heat transfer area for making refrigerant carry out heat exchange of source heat exchanger 5 becomes narrow, and the condensation temperature of refrigerant increases.Cause
This, the compression power of compressor 1 increases.But in this embodiment, in the case where outdoor temperature is high outdoor temperature,
Due to making the first multiple heat exchanger 5b1 and the second multiple heat exchanger 5b2 as the oil heat for making oil carry out heat exchange
Exchanger functions, and therefore, the coefficient of performance of refrigerating circulatory device 300 improves.For being compared with comparative example below
Its bright reason.
[comparative example]
In a comparative example, outdoor temperature be high outdoor temperature in the case where, make the first multiple heat exchanger 5b1 and
At least one party in second multiple heat exchanger 5b2 plays function as the refrigerant heat exchanger for making refrigerant carry out heat exchange
Energy.In a comparative example, the heat transfer area for carrying out heat exchange with refrigerant of heat source side heat exchanger 5 becomes larger, the condensation of refrigerant
Temperature reduces.But in a comparative example, since the heat transfer area for making oil radiate of heat source side heat exchanger 5 becomes smaller, no
Oil can be sufficiently cool.As a result, in a comparative example, when only carrying out oil spurts, the refrigeration that cannot will be discharged from compressor 1
The temperature of agent inhibits below limit temperature.Then, in a comparative example, for the temperature for the refrigerant that will be discharged from compressor 1
Inhibition carries out refrigerant injection below limit temperature.In the case where carrying out refrigerant injection, the rudimentary compression of compressor 1
The pressure of intergrade 1c between portion 1a and advanced compression portion 1b rises.If the pressure of intergrade 1c rises, rudimentary compression unit
The compression ratio [suction pressure of (discharge pressure of rudimentary compression unit 1a=intergrade 1c pressure)/rudimentary compression unit 1a] of 1a becomes
Greatly.If the compression ratio in rudimentary compression unit 1a becomes larger, the volume efficiency in rudimentary compression unit 1a deteriorates, and cooling capacity reduces.
Also, in advanced compression portion 1b, since the amount of the refrigerant of sucking increases, compression power increases.As a result,
In the case that outdoor temperature is high outdoor temperature, when making the first multiple heat exchanger 5b1 and the second multiple heat exchanger
At least one party in 5b2 is as when making refrigerant carry out the refrigerant heat exchanger of heat exchange to function, refrigerating circulatory device
300 coefficient of performance reduces.
[comparison of embodiment 1 and comparative example]
In the case where outdoor temperature is high outdoor temperature, to keeping the first multiple heat exchanger 5b1 and second multi-joint
The case where formula heat exchanger 5b2 is functioned as oil heat exchanger (embodiment 1) and make the first multiple heat exchanger 5b1
And the second at least one party in multiple heat exchanger 5b2 functions as refrigerant heat exchanger and carries out refrigerant spray
The case where penetrating (comparative example) is compared, and as Embodiment 1, makes the first multiple heat exchanger 5b1 and more than second
Connection formula heat exchanger 5b2 can reduce the compression power of compressor 1 in the case where functioning as oil heat exchanger, therefore,
The coefficient of performance of refrigerating circulatory device 300 is good.
In addition, for example, when outdoor temperature becomes higher than high outdoor temperature equal, when only carrying out oil spurts, sometimes
It is no longer able to be sufficiently cool oil, therefore, also uses oil spurts and liquid injection together sometimes.
[movement of refrigerating circulatory device when low outdoor temperature]
Then, the refrigerating circulatory device 300 when being the low outdoor temperature lower than normal outdoor temperature to outdoor temperature is dynamic
The example of work is illustrated.Fig. 5 is the figure of the example of the movement of refrigerating circulatory device when illustrating low outdoor temperature.In addition,
In Fig. 5, solid arrow indicates the flowing of refrigerant, and dotted arrow indicates the flowing of oil.As shown in figure 5, being low in outdoor temperature
In the case where outdoor temperature, opening and closing device 51a, 51b, 52a, 52b, 53a, 53b, 54a and 54b are set as " closing ", will be opened
Device 55 is closed to be set as " opening ".At this point, the refrigerant and oil isolated by oil eliminator 4 flow as described as follows.That is, by
The refrigerant that oil eliminator 4 is isolated is flowed into refrigerant heat exchanger 5a and carries out heat exchange, also, passes through multiple heat exchange
The opening and closing device 53a and opening and closing device 53b of flow path 420 are handed in the first multiple heat exchanger 5b1 and the second multiple heat
Heat exchange is carried out in parallel operation 5b2.It is carried out in the first multiple heat exchanger 5b1 and the second multiple heat exchanger 5b2
The refrigerant of heat exchange, by the opening and closing device 54a and opening and closing device 54b of multiple heat exchange flow path 420 and in refrigerant
The refrigerant flowed in circulation loop 400 converges.The refrigerant of heat exchange is carried out in refrigerant heat exchanger 5a, first
The refrigerant of heat exchange has been carried out in multiple heat exchanger 5b1 and has carried out heat in the second multiple heat exchanger 5b2
The refrigerant of exchange is flowed into expansion device 12 by liquid storage device 7.
In addition, not handed over from the oil that oil eliminator 4 is isolated to the first multiple heat exchanger 5b1 and the second multiple heat
Parallel operation 5b2 flowing, but the opening and closing device 55 for passing through oil stream road 410 is directly injected to compressor 1.That is, being low in outdoor temperature
In the case where outdoor temperature, the oil isolated by oil eliminator 4 is not in the first multiple heat exchanger 5b1 or the second multiple warm
It is cooled in exchanger 5b2, but is ejected into rudimentary compression unit 1a by check valve 56, and pass through check valve 56 and check valve
58 are ejected into advanced compression portion 1b.
As described above, in this embodiment, in the case where outdoor temperature is low outdoor temperature, the first multiple heat is handed over
Parallel operation 5b1 and the second multiple heat exchanger 5b2 plays function as the refrigerant heat exchanger for making refrigerant carry out heat exchange
Energy.In the case where outdoor temperature is low, the condensation temperature of refrigerant is reduced, therefore, the temperature for the refrigerant being discharged from compressor 1
It reduces.Also, the temperature of the oil in this case, separated from refrigerant will not increase.It therefore, is low room in outdoor temperature
It, can will be from 1 row of compressor by the way that the oil isolated by oil eliminator 4 is directly injected to compressor 1 in the case where outer temperature
The temperature of refrigerant out inhibits below limit temperature.In this embodiment, in the feelings that outdoor temperature is low outdoor temperature
Under condition, since the first multiple heat exchanger 5b1 and the second multiple heat exchanger 5b2 carries out heat exchange as with refrigerant
Refrigerant heat exchanger function, therefore, it is possible to use the big heat transfer area of heat source side heat exchanger 5 refrigerant with
Heat exchange is carried out between air.As a result, in this embodiment, it, can in the case where outdoor temperature is low outdoor temperature
To reduce the condensation temperature of refrigerant, so, the compression power of compressor 1 can be reduced.Therefore, in this embodiment, make
The coefficient of performance of SAPMAC method device 300 improves.
As described above, in this embodiment, the heat transfer area by efficiently using heat source side heat exchanger 5 makes refrigerant
Or oil carries out heat exchange, so as to improve the coefficient of performance of refrigerating circulatory device 300.
Also, refrigeration when movement, the normal outdoor temperature of the refrigerating circulatory device 300 when above-mentioned, low outdoor temperature
Refrigeration cycle is switched between the movement of refrigerating circulatory device 300 when the movement of circulator 300 and high outdoor temperature
Device 300 periodically carries out during acting, the coefficient of performance in movement so as to further increase refrigerating circulatory device 300.
In addition, in this embodiment, the biggish refrigerant of difference of enthalpy when using adiabatic compressions such as R32 or R410A
In the case where, said effect becomes significant.This is because: the biggish refrigeration of difference of the enthalpy when compressing adiabatic compression by compressor 1
When agent, the temperature for the refrigerant gas being discharged from compressor 1 becomes high temperature.
In addition, in this embodiment, it usually only can be by the temperature for the refrigerant being discharged from compressor 1 by oil spurts
Inhibit in limit temperature hereinafter, therefore, the coefficient of performance of refrigerating circulatory device 300 improves.
In addition, embodiment 1 is not limited to example described above.
[variation 1]
For example, in the explanation of above-mentioned embodiment 1, being carried out to the example for the open and close control for carrying out all opening and closing devices
Illustrate, but opening and closing device 52a, 52b, 54a and 54b are also possible to have in the primary side (upstream of opening and closing device (solenoid valve)
Side) pressure be more than secondary side (downstream side of opening and closing device (solenoid valve)) pressure when " opening " this function opening and closing device.With
The lower movement for illustrating opening and closing device 52a, 52b, 54a and 54b in variation 1.Fig. 6 is 1 phase of variation with embodiment 1
The figure of pass, is the figure of the example of the movement of opening and closing device when illustrating normal outdoor temperature, and Fig. 7 is the deformation with embodiment 1
The relevant figure of example 1, is the figure of the example of the movement of opening and closing device when illustrating high outdoor temperature, and Fig. 8 is the change with embodiment 1
The relevant figure of shape example 1, is the figure of the example of the movement of opening and closing device when illustrating low outdoor temperature.As shown in Figure 6 to 8, exist
Control is opened and closed after the open and close control of device when passing through starting, and corresponding opening and closing device is linkedly opened and closed.In addition, passing through
Control is opened and closed after the open and close control of device when stopping, and corresponding opening and closing device is linkedly opened and closed.That is, by constituting deformation
The structure of example 1, it is possible to reduce the quantity of the opening and closing device of control is opened and closed.
[variation 2]
In addition, being the function for indicating multiple heat exchanger for example, Fig. 9 is figure relevant to the variation 2 of embodiment 1
The figure of the example of relationship between energy and outdoor temperature.In variation 2, make the heat-transfer area of the first multiple heat exchanger 5b1
Product is different from the heat transfer area of the second multiple heat exchanger 5b2.That is, in variation 2, the first multiple heat exchanger 5b1
Heat transfer area formed bigger than the heat transfer area of the second multiple heat exchanger 5b2.In this way, by handing over the first multiple heat
The heat transfer area of parallel operation 5b1 is different from the heat transfer area of the second multiple heat exchanger 5b2, can be more efficient in variation 2
Ground utilizes the heat transfer area of heat source side heat exchanger 5.
That is, in variation 2, as shown in figure 9, the normal outdoor temperature A the case where with the room lower than normal outdoor temperature A
In the case where outer temperature, that is, normal outdoor temperature B, to the heat transfer area for making oil progress heat exchange and refrigerant is made to carry out heat exchange
The ratio of heat transfer area be adjusted.In the case where normal outdoor temperature A, compared with normal outdoor temperature B, outdoor temperature
Therefore height increases the heat transfer area for making oil carry out heat exchange and reduces the heat transfer area for making refrigerant carry out heat exchange.That is,
In the case where normal outdoor temperature A, the first multiple heat exchanger 5b1 for keeping heat transfer area big plays function as oil heat exchanger
Can, the second multiple heat exchanger 5b2 for keeping heat transfer area small is functioned as refrigerant heat exchanger.In addition, normal
In the case where outdoor temperature B, compared with normal outdoor temperature A, outdoor temperature is low, therefore, reduces the biography for making oil carry out heat exchange
Heat area and increasing makes refrigerant carry out the heat transfer area of heat exchange.That is, making heat-transfer area in the case where normal outdoor temperature B
The first big multiple heat exchanger 5b1 of product is functioned as refrigerant heat exchanger, and keep heat transfer area small second is multi-joint
Formula heat exchanger 5b2 is functioned as oil heat exchanger.In variation 2, heat source side heat exchanger 5 can be efficiently utilized
Heat transfer area, it is thus possible to improve the coefficient of performance of refrigerating circulatory device 300.
[variation 3]
In addition, being schematically to record refrigeration cycle dress for example, Figure 10 is figure relevant to the variation 3 of embodiment 1
The figure for the example set.In addition, in the explanation of above-mentioned embodiment 1, to the tool of heat source side heat exchanger 5, there are two multiple heat to hand over
The example of parallel operation 5b (the first multiple heat exchanger 5b1 and the second multiple heat exchanger 5b2) is illustrated, but implements
Mode 1 is not limited to tool, and there are two multiple heat exchanger 5b.That is, heat source side heat exchanger 5 both can have one it is multi-joint
Formula heat exchanger 5b, it is possible to have three or more multiple heat exchanger 5b.In variation 3 shown in Fig. 10, refrigeration
There are three multiple heat exchanger 5b (first for the tool of heat source side heat exchanger 51 of the heat source side unit 200A1 of circulator 300A1
Multiple heat exchanger 5b1, the second multiple heat exchanger 5b2 and third multiple heat exchanger 5b3).
Figure 11 is figure relevant to the variation 3 of embodiment 1, is the function and outdoor temp for indicating multiple heat exchanger
The figure of the example of relationship between degree.In variation 3, the normal outdoor temperature A the case where with it is lower than normal outdoor temperature A
In the case where outdoor temperature, that is, normal outdoor temperature B, change carries out the quantity of the multiple heat exchanger 5b of heat exchange, as a result,
The ratio for the heat transfer area for making oil carry out the heat transfer area of heat exchange and refrigerant is made to carry out heat exchange is adjusted.Normal
In the case where outdoor temperature A, compared with normal outdoor temperature B, outdoor temperature is high, therefore, increases the biography for making oil carry out heat exchange
Heat area and reducing makes refrigerant carry out the heat transfer area of heat exchange.That is, in this case, increasing makes oil carry out the more of heat exchange
The quantity of connection formula heat exchanger 5b and reducing make refrigerant carry out heat exchange multiple heat exchanger 5b quantity.In addition,
In the case where normal outdoor temperature B, compared with normal outdoor temperature A, outdoor temperature is low, and therefore, reduction makes oil carry out heat exchange
Heat transfer area and increasing so that refrigerant is carried out the heat transfer area of heat exchange.That is, in this case, reduction makes oil carry out heat exchange
Multiple heat exchanger 5b quantity and increasing make refrigerant carry out heat exchange multiple heat exchanger 5b quantity.Becoming
In shape example 3, the heat transfer area of multiple heat exchanger 5b is more efficiently utilized, and the coefficient of performance of refrigerating circulatory device 300 mentions
It is high.It, correspondingly with the increased amount of quantity of multiple heat exchanger 5b, can be efficiently in addition, will also realize that according to the above description
Using the heat transfer area of heat source side heat exchanger 5, it is thus possible to improve the coefficient of performance of refrigerating circulatory device 300.
[variation 4]
In addition, for example, it is also possible to variation 2 and variation 3 are combined into variation 4.Figure 12 is the change with embodiment 1
The relevant figure of shape example 4, is the figure for indicating the example of the relationship between the function and outdoor temperature of multiple heat exchanger.In Figure 12
Shown in variation 4 example in, that there are three multiple heat exchanger 5b is (the first multiple heat exchanger 5b1, second multi-joint for tool
Formula heat exchanger 5b2 and third multiple heat exchanger 5b3).In addition, the heat transfer area of the first multiple heat exchanger 5b1
Be formed as maximum, the heat transfer area of third multiple heat exchanger 5b3 is formed as minimum, the second multiple heat exchanger 5b2's
Heat transfer area is formed as smaller than the heat transfer area of the first multiple heat exchanger 5b1 and than third multiple heat exchanger 5b3
Heat transfer area it is big.By constituting the structure of variation 4, the heat transfer area of heat source side heat exchanger 5 is more efficiently utilized, because
This, can be further improved the coefficient of performance of refrigerating circulatory device 300.Alternatively, it is also possible to have, there are three above multiple heat
Exchanger 5b simultaneously keeps three or more the respective heat transfer areas of multiple heat exchanger 5b different.
Embodiment 2.
In embodiments of the present invention 2, the difference is that making to freeze instead of the injection flow path 430 of embodiment 1
The heat source side unit 200A2 of circulator 300A2 has energy-saving appliance flow path 430A.In the following description, for embodiment party
The duplicate part of formula 1 omits the description.Figure 13 is the example for schematically recording the refrigerating circulatory device of embodiment of the present invention 2
Figure.
[energy-saving appliance flow path]
Energy-saving appliance flow path 430A be by carried out in heat source side heat exchanger 5 heat exchange refrigerant a part via
Energy-saving appliance 49b is ejected into the flow path of compressor 1.Liquid storage device 7 and opening and closing of the energy-saving appliance flow path 430A from refrigerant circulation loop 400
Branch between device 13 and connect with the intergrade 1c of compressor 1.Energy-saving appliance 49b makes to flow in refrigerant circulation loop 400
Refrigerant with have passed through energy-saving appliance flow path 430A economizer expansion device 49a refrigerant carry out heat exchange.Energy-saving appliance is swollen
Swollen device 49a is made of the electronic expansion valve that can change aperture.By the economizer expansion device of energy-saving appliance flow path 430A
49a has carried out the refrigerant injection of heat exchange to the intergrade 1c of compressor 1 in energy-saving appliance 49b.
As described above, in this embodiment, do not need to carry out liquid injection in the same manner as embodiment 1, so as to
Reduce the pressure of the intergrade 1c of compressor 1.Therefore, in this embodiment, the system flowed in refrigerant circulation loop 400
Refrigeration effect (variable quantity of the enthalpy of the per unit mass of refrigerant) when cryogen is over cooled in energy-saving appliance 49b increases, system
Cold energy power increases.This is because: the pressure reduction of the intergrade 1c due to compressor 1, the heat exchange in energy-saving appliance 49b
Amount increases.Therefore, according to the embodiment, the coefficient of performance of refrigerating circulatory device 300 is improved.
Present invention is not limited to the embodiments described above, can make various changes within the scope of the invention.That is, both can be with
The structure of appropriate improvement above embodiment, will can also replace at least partially other structures.Also, do not have for its configuration
There is the structure important document being particularly limited to be not limited to configuration disclosed in embodiment, can be only fitted to the position that can be realized its function
It sets.
For example, in the above-described embodiment, there is refrigerant heat exchanger 5a and multiple heat to heat source side heat exchanger 5
The example of exchanger 5b is illustrated, but heat source side heat exchanger also can have multiple multiple heat exchanger 5b.In this way,
Even if also can use the multiple heat exchanger 5b of heat source side heat exchanger in the case where omitting refrigerant heat exchanger 5a
The heat transfer area of heat source side heat exchanger is effectively utilized, therefore, identical with above embodiment effect can be obtained.
In addition, for example, in the above-described embodiment, to using side unit 100 and heat source side unit 200 it is seperated constitute and
The refrigerating circulatory device 300 that they are connected is illustrated with piping, but refrigerating circulatory device 300 is also possible to utilize side list
The structure that member 100 and heat source side unit 200 are integrally formed.In this case, for example, heat source side unit 200 be configured to have open
It closes device 13, expansion device 12 and utilizes side heat exchanger 2.
In addition, also can change system when being provided with the stream switching mechanisms such as four-way valve in refrigerant circulation loop 400
The flow direction of cryogen using side heat exchanger 2 as condenser so as to function and make the refrigeration of heat source side heat exchanger 5
Agent heat exchanger 5a is functioned as evaporator.In this case, stream switching mechanism is set, so as to be divided by oil eliminator 4
The refrigerant separated out flows to the refrigerant heat exchanger 5a using side heat exchanger 2 or heat source side heat exchanger 5.Make benefit
It uses side heat exchanger 2 to function as condenser, make the refrigerant heat exchanger 5a of heat source side heat exchanger 5 as evaporator
In the case where functioning, for example, according to compressor 1, utilizing side heat exchanger 2, expansion device 12, heat source side heat exchanger 5
The sequence of refrigerant heat exchanger 5a make refrigerant circulation.
Description of symbols
The rudimentary compression unit of 1 compressor, 1a, 1b advanced compression portion, 1c intergrade, 2 using side heat exchangers, 4 oil eliminators,
4a refrigerant outflow portion, 4b oil outflow portion, 5 heat source side heat exchangers, 5a refrigerant heat exchanger, 5b multiple heat exchanger,
The first multiple of 5b1 heat exchanger, the second multiple of 5b2 heat exchanger, 5b3 third multiple heat exchanger, 6 pressure fan, 7 storages
Liquid device, 12 expansion devices, 13 opening and closing devices, 40a first flow path, 40b second flow path, 49a economizer expansion device, 49b energy conservation
Device, 50 injection expansion devices, 51 multiple heat exchangers, 51a opening and closing device, 51b opening and closing device, 52a opening and closing device, 52b
Opening and closing device, 53a opening and closing device, 53b opening and closing device, 54a opening and closing device, 54b opening and closing device, 55 opening and closing devices, 56 check valves,
57 check valves, 58 check valves, 70 temperature sensors, 72 control devices, 100 utilize side unit, 200 heat source side units, 200A1 heat
Source unit, 200A2 heat source side unit, 300 refrigerating circulatory devices, 300A1 refrigerating circulatory device, 300A2 refrigerating circulatory device,
400 refrigerant circulation loops, 410 oil stream roads, 420 multiple heat exchange flow paths, 430 injection flow paths, 430A energy-saving appliance flow path.
Claims (13)
1. a kind of heat source side unit comprising:
Compressor；
Oil eliminator, the oil eliminator separate the refrigerant being discharged from the compressor and oil, make refrigerant from refrigerant
Outflow portion outflow, flows out oil from oily outflow portion；
First flow path, the first flow path are connected to the refrigerant outflow portion；
Second flow path, the second flow path are connected to the oily outflow portion；
Heat source side heat exchanger, the heat source side heat exchanger has to be connect simultaneously with the first flow path and the second flow path
Refrigerant or oil is set to carry out the multiple heat exchanger of heat exchange；And
Flow passage selector device, the flow passage selector device is to the multiple heat exchanger and the first flow path or described second
The connection of flow path switches over,
The multiple heat exchanger functions when being connected to the first flow path as refrigerant heat exchanger, with described
It is functioned when two fluid communications as oil heat exchanger.
2. heat source side unit as described in claim 1, which is characterized in that
The heat source side heat exchanger has multiple multiple heat exchangers,
Each of multiple multiple heat exchangers respectively via the first flow path and the second flow path with it is described
Refrigerant outflow portion and the oily outflow portion connect side by side,
Each and the first flow path or described second of the flow passage selector device to multiple multiple heat exchangers
The connection of flow path switches over.
3. heat source side unit as claimed in claim 2, which is characterized in that
Multiple multiple heat exchangers include the different multiple heat exchanger of heat transfer area.
4. heat source side unit as described in claim 1, which is characterized in that
The heat source side heat exchanger has the refrigerant for being connected to the refrigerant outflow portion and refrigerant being made to carry out heat exchange
Heat exchanger.
5. heat source side unit as claimed in claim 4, which is characterized in that
The heat transfer area of the refrigerant heat exchanger is different from the heat transfer area of the multiple heat exchanger.
6. heat source side unit as claimed in claim 5, which is characterized in that
The heat transfer area of the refrigerant heat exchanger is bigger than the heat transfer area of the multiple heat exchanger.
7. the heat source side unit as described in any one of claim 4~6, which is characterized in that
The multiple heat exchanger and the refrigerant heat exchanger are integrally formed.
8. the heat source side unit as described in any one of claim 4~6, which is characterized in that
The lower section of the refrigerant heat exchanger is arranged in the multiple heat exchanger.
9. such as heat source side unit according to any one of claims 1 to 6, which is characterized in that
The compressor includes rudimentary compression unit, intergrade and advanced compression portion.
10. heat source side unit as claimed in claim 9, which is characterized in that
The heat source side unit, which has, is ejected into institute for a part of the chilled refrigerant in the heat source side heat exchanger
The energy-saving appliance flow path of the intergrade of compressor is stated,
In the middle part of the energy-saving appliance flow path, being provided with makes one of the chilled refrigerant in the heat source side heat exchanger
The economizer expansion device of demi-inflation and make the refrigerant expanded in the economizer expansion device in the heat
Chilled refrigerant carries out the energy-saving appliance of heat exchange in source heat exchanger.
11. a kind of refrigerating circulatory device comprising:
Heat source side unit described in any one of 1~claim 10 of claim；And
With expansion device and using the side unit that utilizes of side heat exchanger, the expansion device makes to hand in the heat source side heat
The refrigerant expansion of heat exchange, the system for making to expand in the expansion device using side heat exchanger have been carried out in parallel operation
Cryogen carries out heat exchange.
12. refrigerating circulatory device as claimed in claim 11, which is characterized in that
The refrigerating circulatory device also includes
Detect the temperature sensor of the outdoor temperature of the outside of the heat source side unit；And
The control device of the control of the flow passage selector device is carried out using the testing result of the temperature sensor,
The control device controls the flow passage selector device, so that the outdoor temperature is higher, the multiple heat
The area for making the oil carry out heat exchange of exchanger is bigger.
13. a kind of refrigerating circulatory device comprising:
Compressor；
Oil eliminator, the oil eliminator separate the refrigerant being discharged from the compressor and oil, make refrigerant from refrigerant
Outflow portion outflow, flows out oil from oily outflow portion；
First flow path, the first flow path are connected to the refrigerant outflow portion；
Second flow path, the second flow path are connected to the oily outflow portion；
Heat source side heat exchanger, the heat source side heat exchanger has to be connect simultaneously with the first flow path and the second flow path
Refrigerant or oil is set to carry out the multiple heat exchanger of heat exchange；
Flow passage selector device, the flow passage selector device is to the multiple heat exchanger and the first flow path or described second
The connection of flow path switches over；
Expansion device, the expansion device make the refrigerant expansion that heat exchange has been carried out in the heat source side heat exchanger；With
And
It is described so that the refrigerant expanded in the expansion device is carried out hot friendship using side heat exchanger using side heat exchanger
It changes,
The multiple heat exchanger functions when being connected to the first flow path as refrigerant heat exchanger, with described
It is functioned when two fluid communications as oil heat exchanger.
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| PCT/JP2014/081283 WO2016084175A1 (en) | 2014-11-26 | 2014-11-26 | Heat source-side unit and refrigeration cycle apparatus |
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| CN110671866B (en) * | 2019-11-01 | 2025-02-18 | 中科美菱低温科技股份有限公司 | Ultra-low temperature refrigerator and laboratory operating table |
| US20250102204A1 (en) * | 2022-01-14 | 2025-03-27 | Panasonic Intellectual Property Management Co., Ltd. | Freezing apparatus |
| JPWO2023135956A1 (en) * | 2022-01-14 | 2023-07-20 | ||
| WO2025046081A1 (en) | 2023-08-30 | 2025-03-06 | Solvay Specialty Polymers Usa, Llc | Barrier layer based on mpmd.t units |
| WO2025132318A1 (en) | 2023-12-21 | 2025-06-26 | Solvay Specialty Polymers Usa, Llc | Multilayer structure comprising bio-based polyamide and its use for hydrogen storage and transportation |
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- 2014-11-26 WO PCT/JP2014/081283 patent/WO2016084175A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2016084175A1 (en) | 2017-04-27 |
| WO2016084175A1 (en) | 2016-06-02 |
| CN106796055A (en) | 2017-05-31 |
| JP6328269B2 (en) | 2018-05-23 |
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