CN104937352A - Binary refrigeration cycle device - Google Patents
Binary refrigeration cycle device Download PDFInfo
- Publication number
- CN104937352A CN104937352A CN201480005380.6A CN201480005380A CN104937352A CN 104937352 A CN104937352 A CN 104937352A CN 201480005380 A CN201480005380 A CN 201480005380A CN 104937352 A CN104937352 A CN 104937352A
- Authority
- CN
- China
- Prior art keywords
- temperature side
- high temperature
- low
- refrigeration cycle
- compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005057 refrigeration Methods 0.000 title claims abstract description 96
- 239000003507 refrigerant Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 38
- 239000010721 machine oil Substances 0.000 description 37
- 238000010790 dilution Methods 0.000 description 8
- 239000012895 dilution Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 229920001289 polyvinyl ether Polymers 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- RBIIKVXVYVANCQ-CUWPLCDZSA-N (2s,4s,5s)-5-amino-n-(3-amino-2,2-dimethyl-3-oxopropyl)-6-[4-(2-chlorophenyl)-2,2-dimethyl-5-oxopiperazin-1-yl]-4-hydroxy-2-propan-2-ylhexanamide Chemical compound C1C(C)(C)N(C[C@H](N)[C@@H](O)C[C@@H](C(C)C)C(=O)NCC(C)(C)C(N)=O)CC(=O)N1C1=CC=CC=C1Cl RBIIKVXVYVANCQ-CUWPLCDZSA-N 0.000 description 1
- CDOOAUSHHFGWSA-OWOJBTEDSA-N (e)-1,3,3,3-tetrafluoroprop-1-ene Chemical compound F\C=C\C(F)(F)F CDOOAUSHHFGWSA-OWOJBTEDSA-N 0.000 description 1
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 description 1
- FXRLMCRCYDHQFW-UHFFFAOYSA-N 2,3,3,3-tetrafluoropropene Chemical compound FC(=C)C(F)(F)F FXRLMCRCYDHQFW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- MSSNHSVIGIHOJA-UHFFFAOYSA-N pentafluoropropane Chemical compound FC(F)CC(F)(F)F MSSNHSVIGIHOJA-UHFFFAOYSA-N 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- -1 polyol ester Chemical class 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002351 wastewater Substances 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
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
-
- 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/047—Water-cooled condensers
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/26—Problems to be solved characterised by the startup of the refrigeration 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/026—Compressor control by controlling unloaders
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21151—Temperatures of a compressor or the drive means therefor at the suction side of the compressor
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2116—Temperatures of a condenser
- F25B2700/21161—Temperatures of a condenser of the fluid heated by the condenser
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
A binary refrigeration cycle device is provided with: a high-temperature-side refrigeration circuit in which a high-temperature-side compressor, a high-temperature-side condenser, a high-temperature-side expansion unit, a cascade heat exchanger, and a high-temperature-side accumulator communicate via a high-temperature-side refrigerant pipe; a low-temperature-side refrigeration circuit in which a low-temperature-side compressor, the cascade heat exchanger, a low-temperature-side expansion unit, a low-temperature-side evaporator, and a low-temperature-side accumulator communicate via a low-temperature-side refrigerant pipe; a high-temperature-side bypass circuit which connects the discharge side of the high-temperature-side compressor and the inlet side of the high-temperature-side accumulator; a high-temperature-side bypass valve which is provided in the high-temperature-side bypass circuit; and a control means which opens the high-temperature-side bypass valve if the outside air temperature is a predetermined temperature or lower at the time of startup.
Description
Technical field
Embodiments of the present invention relate to the binary refrigeration cycle device possessing high temperature side kind of refrigeration cycle and low temperature side kind of refrigeration cycle.
Background technology
In the past, known binary refrigeration cycle device possesses high temperature side kind of refrigeration cycle and low temperature side kind of refrigeration cycle, high temperature side kind of refrigeration cycle and low temperature side kind of refrigeration cycle share 1 cascade heat exchanger (intermediate heat exchanger), the cold-producing medium making to circulate in high temperature side kind of refrigeration cycle, in cascade heat exchanger, carry out heat exchange with the cold-producing medium circulated in low temperature side kind of refrigeration cycle, by the high temperature side cold-producing medium circulated in high temperature side kind of refrigeration cycle, water or warm water are heated, generate warm water.
In general, if start kind of refrigeration cycle when external air temperature is low, then the temperature forming the refrigerating machine oil in the compressor of kind of refrigeration cycle reduces.Therefore, along with the pressure increase that the starting due to compressor causes, cold-producing medium is constantly dissolved in refrigerating machine oil, and refrigerating machine oil is diluted.If this refrigerating machine oil is constantly diluted, then the oil drain quantity being discharged to the refrigerating machine oil outside compressor together with cold-producing medium increases, and the pasta in compressor reduces and the lack of lubrication of compression mechanical part easily occurs.
Particularly, in the high temperature side kind of refrigeration cycle of binary refrigeration cycle device generating high-temperature water, condensing pressure rises fast, and condensing pressure is also high, easily promotes refrigeration machine oil dilution and the oil drain quantity of refrigerating machine oil increases such problem so exist.
Prior art document
Patent document
Patent document 1: International Publication WO2012/128229 A1
Summary of the invention
The technical problem that invention will solve
In view of above-mentioned prior art, the object of the invention is to, the binary refrigeration cycle device that can suppress the oil drain quantity of the refrigerating machine oil be discharged to outside compressor in a kind of starting when low outside air temperature is provided.
The technological means of technical solution problem
In order to the feature of the binary refrigeration cycle device solving the embodiments of the present invention that above-mentioned problem provides is, possess: high temperature side refrigerating circuit, be communicated with high temperature side compressor, high temperature side condenser, high temperature side expansion gear, cascade heat exchanger, high temperature side holder via high temperature side refrigerant piping; Low temperature side refrigerating circuit, is communicated with low temperature side compressor, described cascade heat exchanger, low temperature side expansion gear, low temperature side evaporimeter, low temperature side holder via low temperature side refrigerant piping; High temperature side bypass circulation, connects the discharge side of described high temperature side compressor and the entrance side of described high temperature side holder; High temperature side by-passing valve, is arranged in described high temperature side bypass circulation; And control unit, when starting, below the temperature that external air temperature is regulation, open described high temperature side by-passing valve.
The binary refrigeration cycle device with above-mentioned feature also has following preferred embodiment.
Also possess: low temperature side bypass circulation, connect the discharge side of described low temperature side compressor and the entrance side of described low temperature side holder; Low temperature side by-passing valve, is arranged in described low temperature side bypass circulation; And control unit, when starting, when external air temperature is below setting, open described low temperature side by-passing valve.
In addition, described control unit during described high temperature side by-passing valve is opened, with the running frequency specified to drive described high temperature side compressor.
In addition, described control unit possesses: low outside air temperature originate mode selection unit, according to inflow temperature and external air temperature, determines whether to perform low outside air temperature originate mode; Bypass circulation open hour setup unit, when low outside air temperature originate mode performs, sets the time of opening bypass circulation according to external air temperature; High temperature side bypass control unit, when low outside air temperature originate mode performs, opens high temperature side bypass circulation according to external air temperature; And low temperature side bypass control unit, when low outside air temperature originate mode performs, according to external air temperature, except high temperature side bypass circulation, also open low temperature side bypass circulation.
In addition, binary refrigeration cycle device of the present invention, according to application, only otherwise change spirit of the present invention, is just not limited to the mode of above-mentioned enforcement.
Invention effect
According to above-mentioned embodiments of the present invention, the binary refrigeration cycle device that can suppress the oil drain quantity of the refrigerating machine oil be discharged to outside compressor in a kind of starting when low outside air temperature can be provided.
And then, binary refrigeration cycle device in present embodiment is low and when easily there is refrigeration machine oil dilution at external air temperature, under the state having opened high temperature side bypass circulation, start the operation of high temperature side compressor, thus the gaseous refrigerant of high temperature can be made to flow into compressor inside and make the temperature of the refrigerating machine oil in compressor increase.Thereby, it is possible to suppress cold-producing medium to be added in refrigerating machine oil, and suppress the refrigerating machine oil of dilution to the discharge rate outside compressor.
According to the following record carried out with reference to accompanying drawing, further effect, advantage that embodiments of the present invention are brought will become definitely.
Accompanying drawing explanation
Fig. 1 is the structure chart of the kind of refrigeration cycle of the structure of the binary refrigeration cycle device that embodiments of the present invention are shown.
Fig. 2 is the block diagram of the structure of the control part (controller) of the binary refrigeration cycle device that embodiments of the present invention are shown.
The flow chart of the flowing of action when Fig. 3 is the starting of the binary refrigeration cycle device that embodiments of the present invention are shown.
Fig. 4 is the low external air temperature of outside air temperature originate mode of the binary refrigeration cycle device that embodiments of the present invention are shown and the key diagram (table) of the relation of action.
Symbol description
1 ... high temperature side compressor; 2 ... warm water heat exchanger; 3 ... high temperature side expansion gear; 4 ... cascade heat exchanger; 5 ... high temperature side holder; 6 ... high temperature side bypass circulation; 7 ... high temperature side by-passing valve; Ra ... high temperature side refrigerating circuit; 11 ... low temperature side compressor; 12 ... cross valve; 13 ... low temperature side expansion gear; 14 ... air heat exchanger; 15 ... low temperature side holder; 16 ... low temperature side bypass circulation; 17 ... low temperature side by-passing valve; 18 ... water-delivery pump; Rb ... low temperature side refrigerating circuit; K ... framework; 20 ... control part (control unit); 21,22,23 ... DC-to-AC converter.
Detailed description of the invention
Below, with reference to the accompanying drawings embodiments of the present invention are described.
Fig. 1 is the structure chart of the kind of refrigeration cycle of the structure of the binary refrigeration cycle device that embodiments of the present invention are shown.The binary refrigeration cycle device R being used as high-temperature water generating apparatus is made up of the high temperature side kind of refrigeration cycle Ra carried in framework K, low temperature side kind of refrigeration cycle Rb and control part 20.
The cold-producing medium that high temperature side kind of refrigeration cycle Ra has the high temperature side compressor 1 of compressed refrigerant, the warm water heat exchanger 2 (high temperature side condenser) cold-producing medium being carried out to condensation, the high temperature side expansion gear 3 reduced pressure to cold-producing medium and low temperature side kind of refrigeration cycle Rb carries out the cascade heat exchanger 4 of heat exchange and the high temperature side holder 5 for carrying out gas-liquid separation to cold-producing medium, and they are communicated with successively via refrigerant piping.
Cascade heat exchanger 4 is in high temperature side kind of refrigeration cycle Ra, and the evaporimeter as the cold-producing medium evaporation making to flow through in high temperature side refrigerant flow path 4a plays function.In warm water heat exchanger 2, the refrigerant side stream 2a that the cold-producing medium arranging high temperature side kind of refrigeration cycle Ra flows through and as added the water of hot fluid the water effluent road 2b that flows through, this water effluent road 2b is communicated with hot water pipe H.In hot water pipe H, water-delivery pump 18 is set.
The discharge side of high temperature side compressor 1 is communicated with by high temperature side bypass circulation 6 with the entrance side of high temperature side holder 5.In high temperature side bypass circulation 6, be provided as the high temperature side by-passing valve 7 of open and close valve.
Low temperature side kind of refrigeration cycle Rb have compressed refrigerant low temperature side compressor 11, heating run with Defrost operation in switch the cross valve 12 of the flow direction of cold-producing medium, cascade heat exchanger 4, low temperature side expansion gear 13, the air heat exchanger (low temperature side evaporimeter) 14 that cold-producing medium is evaporated and low temperature side holder 15 that cold-producing medium is reduced pressure, they are communicated with successively via refrigerant piping.
Cascade heat exchanger 4, in low temperature side kind of refrigeration cycle Rb, plays function as making the condenser of the condensation of refrigerant flow through in low temperature side refrigerant flow path 4b.
In the position relative with air heat exchanger 14, the pressure fan 19 of this air heat exchanger 14 being carried to air is set.
The discharge side of low temperature side compressor 11 is communicated with by low temperature side bypass circulation 16 with the entrance side of low temperature side holder 15.In low temperature side bypass circulation 16, be provided as the low temperature side by-passing valve 17 of open and close valve.
In the present embodiment, in high temperature side kind of refrigeration cycle Ra, use R134a cold-producing medium, in low temperature side kind of refrigeration cycle Rb, use R410A cold-producing medium.
The R134a used in high temperature side kind of refrigeration cycle Ra is compared with the R410A used in low temperature side kind of refrigeration cycle Rb, Saturated vapor density, saturation pressure are lower at the same temperature, so be suitable as the cold-producing medium used in the high temperature side kind of refrigeration cycle Ra of the binary refrigeration cycle device that can generate high-temperature water.
In addition, about refrigerating machine oil, in the high temperature side compressor 1 of high temperature side kind of refrigeration cycle Ra, use PVE (polyvinylether), in the low temperature side compressor 11 of low temperature side kind of refrigeration cycle Rb, use POE (polyol ester).In addition, about the PVE of the refrigerating machine oil as high temperature side compressor 1, when high temperature, the wearing and tearing of compression mechanical part are less compared with POE, are more suitable for the refrigerating machine oil as high temperature side compressor.On the contrary, PVE has more easily be dissolved in the such character of R134a cold-producing medium compared with POE, and has the oil drain quantity when low outside air temperature starts and increase such character.
In the binary refrigeration cycle device R formed like this, carry out the operation of the high temperature side kind of refrigeration cycle Ra by driving high temperature side compressor 1 to implement and the operation by the low temperature side kind of refrigeration cycle Rb that drives low temperature side compressor 11 to implement by control part described later (control device) 20.And then, by driving the water-delivery pump 18 of hot water pipe H, water is flow through in the water effluent road 2b of warm water heat exchanger 2.This water is heated by the heat of releasing from the high temperature side cold-producing medium among refrigerant side stream 2a, becomes the high-temperature water of the highest about 90 DEG C.This warm water is fed into the place needing warm water from hot water pipe H.
In addition, the relation of control part 20 and each structural element as shown in Figure 2.
By running high temperature side kind of refrigeration cycle Ra and low temperature side kind of refrigeration cycle Rb, in the heat exchanger 4 comprising high temperature side refrigerant flow path 4a and low temperature side refrigerant flow path 4b, carry out heat exchange, the high temperature side cold-producing medium of high temperature side kind of refrigeration cycle Ra is heated by the heat of releasing from the low temperature side cold-producing medium of low temperature side kind of refrigeration cycle Rb.Thus, in high temperature side kind of refrigeration cycle Ra, the temperature being inhaled into the cold-producing medium of high temperature side compressor 1 uprises, temperature and pressure in high temperature side compressor 1 uprises compared with the temperature and pressure in low temperature side compressor 11, become many from the refrigerant side stream 2a liberated heat of warm water heat exchanger 2, can high-temperature water be generated.
Then, the control part (control device) of the binary refrigeration cycle device R of embodiments of the present invention is described according to the block diagram of Fig. 2.
This binary refrigeration cycle device R possesses by CPU (Central Processing Unit in the inside of framework K, CPU), ROM (Read Only Memory, read-only storage) and the control part 20 that forms such as RAM (Random AccessMemory, random access memory).
This control part 20 is connected to high temperature side compressor 1 drived control inverter loop 21, low temperature side compressor 11 drived control inverter loop 22, pressure fan 19 drived control inverter loop 23, high temperature side expansion gear 3, low temperature side expansion gear 13, cross valve 12, high temperature side by-passing valve 7, low temperature side by-passing valve 17 and pump 18, and controls their action.
For control part 20, be connected to the temperature sensor 31a arranged in the discharge side of high temperature side compressor 1 and low temperature side compressor 11, 31b and pressure sensor 32a, 32b, the temperature sensor 33a arranged in suction side, 33b and pressure sensor 34a, 34b, at the inlet water temperature sensor 35 that the water effluent road 2b entrance side of warm water heat exchanger 2 is arranged, at the outlet cooling-water temperature sensor 36 that outlet side is arranged, the temperature sensor (not shown) arranged in cascade heat exchanger 4, the temperature sensor (not shown) arranged in air heat exchanger 14, and the external air temperature sensor 37 arranged near air heat exchanger 14.In addition, in fig. 2, show temperature sensor 31a, state that inlet water temperature sensor 35, external air temperature sensor 37 are connected with control part 20.
The voltage of the power supplys such as high temperature side compressor 1 drived control inverter loop 21 pairs of commercial ac power sources carries out rectification, and converts thereof into the voltage of the frequency corresponding to the instruction from control part 20, outputs to the compressor motor 1M of high temperature side compressor 1.This is output into the driving electric power of compressor motor 1M.Similarly, low temperature side compressor 11 drived control inverter loop 22 drives the compressor motor 11M of low temperature side compressor 11, and pressure fan 19 drived control inverter loop 23 drives the fan motor 19M of pressure fan 19.About water-delivery pump 18, also driven by water-delivery pump drived control inverter (not shown).
The service condition of control part 20 according to the input via the operating portion such as touch panel, remote controller (all not shown), the information such as detectable signal from various sensor decide the operation condition in each portion, drive compressor motor 1M, 11M, fan motor 19M, cross valve 12, each expansion gear 3,13 and each by-passing valve 7,17, pump 18 etc.
Above-mentioned control part 20 has following (1) ~ (4) unit as major function.
(1) low outside air temperature originate mode selection unit 20a, this low outside air temperature originate mode selection unit is when starting, according to the inflow temperature Twi achieved in the detection signal from inlet water temperature sensor 35 and the external air temperature To achieved from the detection signal of external air temperature sensor 37, determine whether to perform low outside air temperature originate mode.
(2) bypass circulation open hour setup unit 20b, this bypass circulation open hour setup unit, when low outside air temperature originate mode performs, sets the time of opening bypass circulation 6,16 according to external air temperature To.
(3) high temperature side bypass control unit 20c, this high temperature side bypass control unit, when low outside air temperature originate mode performs, opens high temperature side bypass circulation 6 according to external air temperature To.
(4) low temperature side bypass control unit 20d, this low temperature side bypass control unit, when low outside air temperature originate mode performs, according to external air temperature To, also opens low temperature side bypass circulation 16 except high temperature side bypass circulation 6.
Below, the action of above-mentioned binary refrigeration cycle device R is described according to Fig. 3, Fig. 4.
Fig. 3 is the flow chart of the process that the control part 20 of binary refrigeration cycle device R performs, and Fig. 4 is the key diagram that the low external air temperature of outside air temperature originate mode and the relation of action are shown.
Start if operator operates in operating portion or the operating portion be provided with in binary refrigeration cycle device R that warm water supply side is provided with or indicates to run according to the Operational Timelines set some operating portions, then first control part 20 obtains the inflow temperature Twi that the inlet water temperature sensor 35 that is provided with by the entrance side of the water effluent road 2b at warm water heat exchanger 2 is detected and the external air temperature To detected by external air temperature sensor 37.
Then, control part 20 judge inflow temperature Twi whether higher than the temperature Twis (such as 40 DEG C) of the regulation prestored in control part 20 and external air temperature To be whether the temperature T1 (such as 20 DEG C) of the regulation prestored in control part 20 below (step S1).
Herein, the temperature of the refrigerating machine oil of refrigerating machine oil in compressor reduces and the pressure of cold-producing medium sharply rises, easily diluted.When inflow temperature Twi is below 40 DEG C, the condensing pressure in the warm water heat exchanger 2 of high temperature side kind of refrigeration cycle Ra is not high, even if so start high temperature side compressor 1, the pressure in compressor also can not sharply rise.Therefore, even if when the temperature of refrigerating machine oil low (external air temperature To is low), also not easily there is refrigeration machine oil dilution.In addition, when external air temperature To is higher than 20 DEG C, the temperature of the refrigerating machine oil in compressor does not reduce, even if so when condensing pressure high (inflow temperature Twi is high) in the warm water heat exchanger 2 of high temperature side kind of refrigeration cycle Ra, also not easily there is refrigeration machine oil dilution.Therefore, control part 20 when inflow temperature Twi be less than 40 DEG C or external air temperature To higher than (when in step sl for "No") when 20 DEG C, do not perform low outside air temperature originate mode.
On the other hand, when inflow temperature Twi higher than 40 DEG C and external air temperature To is below 20 DEG C (in step sl for "Yes" when), control part 20 performs the low outside air temperature originate mode next illustrated.
As shown in Figure 4, control part 20 controls the open hour of bypass circulation, the opening and closing of by-passing valve according to external air temperature To.
First, control part 20 sets open hour (the open setting-up time of the bypass circulation) Ts of bypass circulation according to external air temperature To.
Control part 20 judges external air temperature To whether in the scope (T2<To≤T1) of setting T1 ~ T2 (step S3).Herein, T1 is such as 20 DEG C, and T2 is-10 DEG C.If external air temperature To is higher than-10 degree and be less than 20 DEG C ("Yes" when) in step s3, then control part 20 proceeds to step S5, the open hour ts of the high temperature side by-passing valve 7 of high temperature side bypass circulation 6 is set as stipulated time t1 (such as 6 minutes).
Control part 20 ought when external air temperature To be less than-10 DEG C in step s3 when "No" () in step s3, proceed to step S4, judge external air temperature To whether in the scope (T3<To≤T2) of setting T2 ~ T3.Herein, T3 is such as-15 DEG C.
If external air temperature To is higher than-15 DEG C and be less than-10 DEG C (when the "Yes" of step S4), then control part 20 proceeds to step S6, the open hour ts of the high temperature side by-passing valve 7 of high temperature side bypass circulation 6 is set as stipulated time t2 (such as 8 minutes).
Control part 20 ("No") in step S4 when external air temperature To is less than-15 DEG C, proceed to step S7, the open hour ts of each by-passing valve 7,17 of high temperature side bypass circulation 6 and low temperature side bypass circulation 16 is set as stipulated time t3 (such as 30 minutes).
Control part 20, after the high temperature side by-passing valve 7 opening high temperature side bypass circulation 6, starts the operation (step 8) of high temperature side compressor 1.And then, proceed to step S9, start the operation of low temperature side compressor 11.
By opening the high temperature side by-passing valve 7 of high temperature side kind of refrigeration cycle Ra, and run high temperature side compressor 1, thus a part for the gaseous refrigerant of having discharged from high temperature side compressor 1 flow into high temperature side holder 5 via high temperature side bypass circulation 6.The gaseous refrigerant flowing into high temperature side holder 5 is inhaled into high temperature side compressor 1, heats the refrigerating machine oil in compressor.Along with the process of time, from the temperature rising of the gaseous refrigerant that high temperature side compressor 1 is discharged, the temperature of refrigerating machine oil also rises.
Now, control part 20 obtains the temperature Td of the discharge gaseous refrigerant detected by temperature sensor 31a, judges whether this effluent air temp Td has exceeded the temperature (step S12) of regulation.
In the present embodiment, the temperature of this regulation is set to from hot water effluent's design temperature (target set temperature) Twos (such as 90 DEG C) set by operating portion, deducts setting α (such as 10 DEG C) and the temperature 80 DEG C obtained.
In step 12S, if discharge gaseous refrigerant temperature Td more than 80 DEG C (Twos-10 DEG C) (when being "No" in step s 11), then control part 20 is judged as that the refrigerating machine oil in compressor 1 is sufficiently heated and closes high temperature side by-passing valve 7 (step S14).
In addition, even if discharge gaseous refrigerant temperature Td more than 80 DEG C (when being "Yes" in step s 11), if have passed through the open setting-up time ts of bypass circulation from the elapsed time t opened high-pressure side bypass circulation 6 (is 6 minutes in step s 5,8 minutes in step s 6) (when the "Yes" of step S13), then control part 20 is also judged as that the refrigerating machine oil in compressor 1 be heated, and closes high temperature side by-passing valve 7 (step S14).
Then, control part 20, after closedown high temperature side by-passing valve 7, is removed low outside air temperature originate mode (step S15), is transferred to conventional operation.
When low outside air temperature originate mode performs, control part 20 is during high temperature side by-passing valve 7 is opened, and the mode that the running frequency (such as 30Hz) of running frequency during to be less than conventional operation is constant drives high temperature side compressor 1.Under the condition that refrigerating machine oil easily dilutes, if make the running frequency of high temperature side compressor 1 rise rapidly, drive with high running frequency, then the oil drain quantity of the refrigerating machine oil of discharging outside compressor increases.Therefore, when low outside air temperature originate mode performs, by making the running frequency of high temperature side compressor 1 be held in 30Hz, the oil drain quantity of the refrigerating machine oil of discharging outside compressor can be suppressed.
On the other hand, compared with high temperature side compressor 1, not easily there is refrigeration machine oil dilution, so drive with the running frequency identical with conventional operation in low temperature side compressor 11.If low temperature side compressor 11 also drives with low running frequency, then the heat that provides to high temperature side kind of refrigeration cycle Ra of low temperature side kind of refrigeration cycle Rb is not enough, and the startup of high temperature side kind of refrigeration cycle Ra needs the time.Therefore, in order to make the effluent air temp Td of high temperature side compressor 1 rise as early as possible, low temperature side compressor 11 is driven in the same manner as conventional operation.
Then, the action of the low outside air temperature originate mode when external air temperature To is extremely low is described.
When external air temperature To is-15 DEG C (temperature T3 of regulation) such below pole low temperature, high temperature side cold-producing medium is stagnated in high temperature side kind of refrigeration cycle Ra, thus circulating mass of refrigerant reduces, but also open high temperature side by-passing valve 7 as described above, drive high temperature side compressor 1 with low running frequency, thus the low temperature side cold-producing medium of low temperature side kind of refrigeration cycle Rb cannot heat release completely in cascade heat exchanger 4.Therefore, the high side pressure in low temperature side kind of refrigeration cycle Rb is anxious swashs rising, and the protective devices such as high-voltage switch gear play a role, and forces the operation that stopped binary refrigeration cycle device R.Cause when being under the extremely low situation of external air temperature To like this, binary refrigeration cycle device R possibly cannot run.
Therefore, even if under making to be in the extremely low situation of external air temperature, also binary refrigeration cycle device R can be run, control part 20 at external air temperature To lower than ("No") in step S4 when-15 DEG C, after open for bypass circulation setting-up time ts is set as 30 minutes (t3) (step S7), open high temperature side by-passing valve 7 (step S10), and open low temperature side by-passing valve 17 (step S11).
Under the situation that external air temperature is extremely low, refrigerating machine oil in high temperature side compressor 1 is difficult to heating, so be set as by open for bypass circulation setting-up time ts 30 minutes (t3) longer than above-mentioned 6 minutes (t1: step S5), 8 minutes (t2: step S6).
After the open setting-up time ts of setting bypass circulation, according to the instruction from control part 20, open the high temperature side by-passing valve 7 of high temperature side bypass circulation 6 and start the operation (step S10) of high temperature side compressor 1.And then, according to the instruction from control part 20, open the low temperature side by-passing valve 17 of low temperature side bypass circulation 16 and start the operation (step S11) of low temperature side compressor 11.
Now, high temperature side compressor 1 drives with low running frequency (30Hz is constant), and low temperature side compressor 11 drives with the running frequency of conventional operation.
By opening low temperature side by-passing valve 17, flow into low temperature side holder 15 from a part for the gaseous refrigerant of low temperature side compressor 11 discharge via low temperature side bypass circulation 16.The gaseous refrigerant flowing into low temperature side holder 15 is inhaled into low temperature side compressor 11.Flow through low temperature side bypass circulation 16 from a part for the gaseous refrigerant of low temperature side compressor 11 discharge, thus can suppress the rising rapidly of the high side pressure of low temperature side kind of refrigeration cycle Rb, and the pressure that the High Abnormal Pressure due to low temperature side kind of refrigeration cycle Rb can be avoided to cause stops.
If the discharge gaseous refrigerant temperature Td of high temperature side compressor 1 is more than 80 DEG C (Twos-10 DEG C) ("No" of step S12), then control part 20 is judged as that the refrigerating machine oil in high temperature side compressor 1 has been sufficiently heated, carry out instruction, to close high temperature side by-passing valve 6 and low temperature side by-passing valve 16 (step S14).
In addition, even if discharge gaseous refrigerant temperature Td more than 80 DEG C (Twos-10 DEG C) ("Yes" of step S12), if have passed through 30 minutes (ts=t3) ("Yes" of step S13) from the elapsed time t opened high-pressure side by-passing valve 7 and low temperature side by-passing valve 17, then control part 20 is also judged as that the refrigerating machine oil in high temperature compressor 1 be heated, therefore, high temperature side by-passing valve 7 and low temperature side by-passing valve 17 (step S14) is closed.
Then, control part 20, after closedown high temperature side by-passing valve 7 and low temperature side by-passing valve 17, is removed low outside air temperature originate mode (step S15), is forwarded conventional operation to.
By above structure, even if under the situation that external air temperature To is extremely low, also binary refrigeration cycle device R can be run.
As described above, binary refrigeration cycle device R in present embodiment is low and when easily there is refrigeration machine oil dilution at external air temperature, under the state having opened high temperature side bypass circulation 6, start the operation of high temperature side compressor 1, thus the gaseous refrigerant of high temperature can be made to flow into compressor inside and make the temperature of the refrigerating machine oil in compressor increase.Thereby, it is possible to suppress cold-producing medium to be added in refrigerating machine oil, suppress the refrigerating machine oil of dilution to the discharge rate outside compressor.
And then the binary refrigeration cycle device R in present embodiment is being under the extremely low situation of external air temperature, the also bypass circulation 16 of open low temperature side kind of refrigeration cycle Rb, thus the High Abnormal Pressure of low temperature side circulation Rb can be prevented.
In addition, binary refrigeration cycle device R of the present invention is not limited to warm water generating apparatus, forms according to application destination, is not limited to the mode of above-mentioned enforcement.
Such as, if replace the air heat exchanger 14 of low temperature side kind of refrigeration cycle Rb, and use the heat exchanger that absorption heat is such from the thermal wastewater of factory etc., then can not in heat-exchanger surface frosting as air heat exchanger 14, so the cross valve 12 for low temperature side kind of refrigeration cycle Rb being set to inverse circulation can be removed.
In addition, be not limited to the refrigerant R134a, the R410A that use in high temperature side kind of refrigeration cycle Ra and low temperature side kind of refrigeration cycle Rb, also can use R32, R245fa, HFO-1234yf, the cold-producing mediums such as HFO-1234ze.
Above, describe present embodiment, but above-mentioned embodiment is pointed out as an example, and not intended to be limits the scope of embodiment.This new embodiment can be implemented in other various modes, not departing from the scope of purport, can carry out various omission, displacement, change.These embodiments, its distortion are included in scope of invention, purport, and be included in patent claims record invention and equivalency range in.
Claims (4)
1. a binary refrigeration cycle device, is characterized in that, possesses:
High temperature side refrigerating circuit, it is communicated with high temperature side compressor, high temperature side condenser, high temperature side expansion gear, cascade heat exchanger, high temperature side holder via high temperature side refrigerant piping;
Low temperature side refrigerating circuit, it is communicated with low temperature side compressor, described cascade heat exchanger, low temperature side expansion gear, low temperature side evaporimeter, low temperature side holder via low temperature side refrigerant piping;
High temperature side bypass circulation, it connects the discharge side of described high temperature side compressor and the entrance side of described high temperature side holder;
High temperature side by-passing valve, it is arranged in described high temperature side bypass circulation; And
Control unit, when starting, below the temperature that external air temperature is regulation, opens described high temperature side by-passing valve.
2. binary refrigeration cycle device according to claim 1, is characterized in that, possesses:
Low temperature side bypass circulation, it connects the discharge side of described low temperature side compressor and the entrance side of described low temperature side holder;
Low temperature side by-passing valve, it is arranged in described low temperature side bypass circulation; And
Control unit, when starting, when external air temperature is below setting, opens described low temperature side by-passing valve.
3., according to claim 1 or binary refrigeration cycle device according to claim 2, it is characterized in that,
Described control unit during described high temperature side by-passing valve is opened, with the running frequency specified to drive described high temperature side compressor.
4. the binary refrigeration cycle device according to any one of claim 1 to claim 3, is characterized in that,
Described control unit possesses:
Low outside air temperature originate mode selection unit, according to inflow temperature and external air temperature, determines whether to perform low outside air temperature originate mode;
Bypass circulation open hour setup unit, when low outside air temperature originate mode performs, sets the time of opening bypass circulation according to external air temperature;
High temperature side bypass control unit, when low outside air temperature originate mode performs, opens high temperature side bypass circulation according to external air temperature; And
Low temperature side bypass control unit, when low outside air temperature originate mode performs, according to external air temperature, also opens low temperature side bypass circulation except high temperature side bypass circulation.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-008634 | 2013-01-21 | ||
| JP2013008634 | 2013-01-21 | ||
| PCT/JP2014/050915 WO2014112615A1 (en) | 2013-01-21 | 2014-01-20 | Binary refrigeration cycle device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104937352A true CN104937352A (en) | 2015-09-23 |
| CN104937352B CN104937352B (en) | 2017-08-08 |
Family
ID=51209701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480005380.6A Active CN104937352B (en) | 2013-01-21 | 2014-01-20 | Binary refrigeration cycle device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5982017B2 (en) |
| KR (1) | KR101673105B1 (en) |
| CN (1) | CN104937352B (en) |
| WO (1) | WO2014112615A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285619A (en) * | 2019-06-28 | 2019-09-27 | 中国科学院理化技术研究所 | Cascade type heat pump control method and system |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016113899A1 (en) * | 2015-01-16 | 2016-07-21 | 三菱電機株式会社 | Refrigeration cycle device |
| WO2016147305A1 (en) * | 2015-03-16 | 2016-09-22 | 三菱電機株式会社 | Air conditioning and hot water supply combined system |
| JP6514964B2 (en) * | 2015-06-03 | 2019-05-15 | 東芝キヤリア株式会社 | Refrigeration cycle device |
| KR101975008B1 (en) | 2018-09-19 | 2019-05-07 | (주)본씨앤아이 | Cooling System for Cooling Semiconductor Equipment to Prevent Moisture Freezing |
| KR101975007B1 (en) | 2018-09-19 | 2019-05-07 | (주)본씨앤아이 | cooling system for semiconductor parts cooling |
| EP4006441A4 (en) * | 2019-07-25 | 2022-07-13 | Mitsubishi Electric Corporation | Air conditioning apparatus |
| KR102330756B1 (en) | 2020-03-02 | 2021-11-25 | 스타우프코리아유한회사 | Binary refrigenerating type thermo-hygrostat system |
| JP7388467B2 (en) * | 2022-03-31 | 2023-11-29 | 株式会社富士通ゼネラル | dual refrigeration equipment |
| CN117469871B (en) * | 2023-12-26 | 2024-04-05 | 珠海格力电器股份有限公司 | Control method and device of refrigeration system, refrigeration system and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1227334A (en) * | 1998-02-23 | 1999-09-01 | 三菱电机株式会社 | Air conditioner |
| CN102003823A (en) * | 2010-11-17 | 2011-04-06 | 重庆高环科技有限公司 | Low temperature cold air two-stage refrigeration system and cold air jet machine thereof |
| CN102128524A (en) * | 2010-01-13 | 2011-07-20 | 珠海格力电器股份有限公司 | Heat pump machine with preheating function and preheating method thereof |
| WO2012128229A1 (en) * | 2011-03-18 | 2012-09-27 | 東芝キヤリア株式会社 | Binary refrigeration cycle device |
| JP2012197959A (en) * | 2011-03-18 | 2012-10-18 | Fujitsu General Ltd | Air conditioning apparatus |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61280350A (en) * | 1985-06-03 | 1986-12-10 | 三洋電機株式会社 | Refrigerator |
| JPH08189713A (en) * | 1995-01-13 | 1996-07-23 | Daikin Ind Ltd | Binary refrigerating device |
| JP3125778B2 (en) * | 1998-02-23 | 2001-01-22 | 三菱電機株式会社 | Air conditioner |
| KR100373075B1 (en) * | 2000-06-07 | 2003-02-25 | 삼성전자주식회사 | Control system for starting of air conditioner and control method thereof |
| JP3932955B2 (en) * | 2002-04-04 | 2007-06-20 | 三菱電機株式会社 | Air conditioner |
| JP2005083704A (en) * | 2003-09-10 | 2005-03-31 | Mitsubishi Electric Corp | Refrigerating cycle and air conditioner |
-
2014
- 2014-01-20 WO PCT/JP2014/050915 patent/WO2014112615A1/en active Application Filing
- 2014-01-20 JP JP2014557525A patent/JP5982017B2/en active Active
- 2014-01-20 CN CN201480005380.6A patent/CN104937352B/en active Active
- 2014-01-20 KR KR1020157019193A patent/KR101673105B1/en active IP Right Grant
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1227334A (en) * | 1998-02-23 | 1999-09-01 | 三菱电机株式会社 | Air conditioner |
| CN102128524A (en) * | 2010-01-13 | 2011-07-20 | 珠海格力电器股份有限公司 | Heat pump machine with preheating function and preheating method thereof |
| CN102003823A (en) * | 2010-11-17 | 2011-04-06 | 重庆高环科技有限公司 | Low temperature cold air two-stage refrigeration system and cold air jet machine thereof |
| WO2012128229A1 (en) * | 2011-03-18 | 2012-09-27 | 東芝キヤリア株式会社 | Binary refrigeration cycle device |
| JP2012197959A (en) * | 2011-03-18 | 2012-10-18 | Fujitsu General Ltd | Air conditioning apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285619A (en) * | 2019-06-28 | 2019-09-27 | 中国科学院理化技术研究所 | Cascade type heat pump control method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5982017B2 (en) | 2016-08-31 |
| WO2014112615A1 (en) | 2014-07-24 |
| KR20150096746A (en) | 2015-08-25 |
| KR101673105B1 (en) | 2016-11-04 |
| JPWO2014112615A1 (en) | 2017-01-19 |
| CN104937352B (en) | 2017-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104937352A (en) | Binary refrigeration cycle device | |
| KR101155496B1 (en) | Heat pump type speed heating apparatus | |
| JP5094942B2 (en) | Heat pump equipment | |
| US10753645B2 (en) | Refrigeration cycle apparatus | |
| KR20110117973A (en) | Heat pump type speed heating apparatus | |
| CN108779939B (en) | Refrigerating device | |
| EP3273178B1 (en) | Heat pump system | |
| KR101737365B1 (en) | Air conditioner | |
| JP2013119954A (en) | Heat pump hot water heater | |
| EP3228951A1 (en) | Refrigeration cycle apparatus | |
| JP2012093054A (en) | Refrigerating apparatus | |
| JP2016180564A (en) | Refrigeration cycle apparatus | |
| EP2522933B1 (en) | Heat storing apparatus having cascade cycle and control process of the same | |
| US11193705B2 (en) | Refrigeration cycle apparatus | |
| WO2015194167A1 (en) | Heat pump device | |
| WO2015075882A1 (en) | Heat pump cycle device | |
| JP2008175402A (en) | Operating method of refrigerating cycle device | |
| JP2006194526A (en) | Air conditioner | |
| JP2012007751A (en) | Heat pump cycle device | |
| US11397035B2 (en) | Controller of air conditioning apparatus, outdoor unit, relay unit, heat source unit, and air conditioning apparatus | |
| JP2015143597A (en) | water heater | |
| KR101321545B1 (en) | Air conditioner | |
| JP2016109372A (en) | Air conditioner | |
| CN108105953A (en) | A kind of air-conditioner control system and its control method | |
| KR102104818B1 (en) | chiller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |