CN110337571A - Heat pump utilizes equipment - Google Patents
Heat pump utilizes equipment Download PDFInfo
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- CN110337571A CN110337571A CN201780087175.2A CN201780087175A CN110337571A CN 110337571 A CN110337571 A CN 110337571A CN 201780087175 A CN201780087175 A CN 201780087175A CN 110337571 A CN110337571 A CN 110337571A
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- 239000003507 refrigerant Substances 0.000 claims abstract description 276
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 15
- 231100000331 toxic Toxicity 0.000 claims description 2
- 230000002588 toxic effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 201
- 238000010438 heat treatment Methods 0.000 description 56
- 238000003860 storage Methods 0.000 description 17
- 238000010257 thawing Methods 0.000 description 16
- 238000009835 boiling Methods 0.000 description 12
- 238000001514 detection method Methods 0.000 description 12
- 239000003795 chemical substances by application Substances 0.000 description 10
- 238000005057 refrigeration Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 230000000306 recurrent effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 229920003027 Thinsulate Polymers 0.000 description 1
- 239000004789 Thinsulate Substances 0.000 description 1
- 208000036142 Viral infection Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/005—Arrangement or mounting of control or safety devices of safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
- F24H4/04—Storage heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/16—Arrangements for water drainage
- F24H9/17—Means for retaining water leaked from heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/003—Indoor unit with water as a heat sink or heat source
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/12—Inflammable refrigerants
-
- 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
- F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
- F25B2500/222—Detecting refrigerant leaks
-
- 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
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0251—Compressor control by controlling speed with on-off operation
-
- 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
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2519—On-off valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
Heat pump has refrigerant circuit (110) using equipment, the heat exchanger (2) of the heat exchange of thermal medium circuit (210) and progress refrigerant and thermal medium, the major loop (220) in thermal medium circuit (210) has branch portion (55) and merging part (230), pressure protective device (70) and refrigerant leakage detecting device (98) are connected in major loop (220), pressure protective device (70) is connect with the interconnecting piece (54) in major loop (220), interconnecting piece (54) is located at heat exchanger (2), between the side in branch portion (55) or merging part (230), in refrigerant circuit (110), heat exchanger (2) is provided with the 1st disconnecting device (77) and the 2nd disconnecting device (78).
Description
Technical field
The present invention relates to the heat pumps with refrigerant circuit and thermal medium circuit to utilize equipment.
Background technique
The outdoor unit for having used the heat pump circulating device of combustible refrigerant is recorded in patent document 1.The outdoor equipment
Standby: refrigerant circuit passes through piping connect compressor, air heat exchanger, throttling set and water heat exchanger；And pressure
Power relief valve prevents the excessive rising of the hydraulic pressure in the water loop for supplying the water being heated in water heat exchanger.By
This, causes combustible refrigerant to be mixed into even if refrigerant circuit and the next door of water loop are isolated in water heat exchanger by destruction
To water loop, also combustible refrigerant can be discharged to outside room via pressure relief valve.
Patent document 1: Japanese Unexamined Patent Publication 2013-167398 bulletin
In heat pumps such as heat pump circulating devices using in equipment, in general, the pressure relief valve of water loop is set to interior
Machine.Heat pump is varied using the combination of outdoor unit and indoor unit in equipment, and there is only the outdoor units to same manufacturer
The case where being combined with indoor unit, there is also to different manufacturers outdoor unit and indoor unit be combined the case where.Therefore,
There is also combine outdoor unit described in Patent Document 1 with the indoor unit for being provided with pressure relief valve.
However, in this case, there are following situations, it may be assumed that if refrigerant leaks to water loop, be mixed into water loop
Water refrigerant not only from be set to outdoor unit pressure relief valve be discharged, also can be from the pressure relief valve for being set to indoor unit
Discharge.Accordingly, there exist refrigerants, and indoor project may be leaked to via water loop.
Summary of the invention
The present invention be it is completed to solve the above problems, its purpose is to provide one kind be able to suppress refrigerant leakage
Equipment is utilized to indoor heat pump.
Heat pump according to the present invention has using equipment: refrigerant circuit makes refrigerant circulation；Thermal medium circuit,
It makes medium passing；And heat exchanger, the heat exchange of above-mentioned refrigerant Yu above-mentioned thermal medium is carried out, above-mentioned thermal medium returns
Road has the major loop via above-mentioned heat exchanger, and above-mentioned major loop includes branch portion, is set to the downstream of above-mentioned major loop
End connects multiple duplexures from above-mentioned major loop branch；And merging part, it is set to the upstream end of above-mentioned major loop,
Connection interflow is connected with pressure protective device and refrigerant in above-mentioned major loop in above-mentioned multiple duplexures of above-mentioned major loop
Leak detecting device is provided with the 1st disconnecting device and the 2nd cutting dress across above-mentioned heat exchanger in above-mentioned refrigerant circuit
It sets.
According to the present invention, even if in the case where refrigerant leaks to thermal medium circuit, the 1st disconnecting device can also be passed through
With the flowing of the refrigerant of the 2nd disconnecting device cutting refrigerant circuit.Therefore, refrigerant is able to suppress to let out from pressure protective device
It leaks to interior.
Detailed description of the invention
Fig. 1 is to indicate heat pump involved in embodiments of the present invention 1 using the loop diagram of the outline structure of equipment.
Fig. 2 is returning for the outline structure for indicating heat pump involved in the variation of embodiments of the present invention 1 using equipment
Lu Tu.
Fig. 3 is to indicate heat pump involved in embodiments of the present invention 1 using the refrigerant leakage detecting device in equipment
The explanatory diagram of the example of 98 allocation position.
Fig. 4 is to indicate heat pump involved in embodiments of the present invention 2 using the loop diagram of the outline structure of equipment.
Specific embodiment
Embodiment 1
Heat pump involved in embodiments of the present invention 1 is illustrated using equipment.Fig. 1 is to indicate present embodiment institute
The heat pump being related to utilizes the loop diagram of the outline structure of equipment.In the present embodiment, illustrating has Teat pump hot water supply heating dress
1000 are set as heat pump and utilizes equipment.In addition, there are the sizes of each structure member in the attached drawing below including Fig. 1
Relationship, shape etc. and actual different situation.
As shown in Figure 1, Teat pump hot water supply heating combined equipment 1000 has the refrigerant circuit 110 for making refrigerant circulation and makes
The logical water loop 210 of water flow.In addition, Teat pump hot water supply heating combined equipment 1000 has the room for being set to outdoor (for example, outside room)
Outer machine 100 and it is set to indoor indoor unit 200.Indoor unit 200 is for example set to kitchen, bathroom, laundry or in building
Build the storage spaces such as the storeroom of the inside of object.
Refrigerant circuit 110 has compressor 3, refrigerant flow path switching device 4, load-side heat exchanger 2, decompressor
6 and heat source side heat exchanger 1 be sequentially connected via refrigerant piping as cricoid structure.In Teat pump hot water supply heating combined equipment
In 1000 refrigerant circuit 110, operating is possibly realized below: usually operating (for example, heating and hot-water supply operating), heating
The flowing water in water loop 210；It is operated with defrosting, so that refrigerant is circulated to opposite direction relative to usual operating, thus into
The defrosting of row heat source side heat exchanger 1.
Compressor 3 is the fluid machine for compressing to the low pressure refrigerant of sucking, and discharging it as high-pressure refrigerant
Tool.The compressor 3 of this example has converter plant etc., can be by arbitrarily changing driving frequency, to change capacity (every list
The position time sends out the amount of refrigerant).
Refrigeration of the refrigerant flow path switching device 4 in usual operating and when defrosting operating in switching refrigerant circuit 110
The flow direction of agent.Such as use four-way valve as refrigerant flow path switching device 4.
Load-side heat exchanger 2 is that the refrigerant flow in refrigerant circuit 110 is flowed in water loop 210
Water heat exchange water-refrigerant heat exchanger.Such as use heat-exchangers of the plate type as load-side heat exchanger 2.Load
There is side heat exchanger 2 a part as refrigerant circuit 110 to make the refrigerant flow path of refrigerant circulation, as water loop
The laminal next door on water flow road and isolation refrigerant flow path and water flow road that 210 a part keeps water flow logical.Load-side heat
Condenser (radiator) of the exchanger 2 in usual operating as heating water functions, when defrosting operating as evaporator
(heat dump) functions.
Decompressor 6 adjusts the flow of refrigerant, such as carries out the pressure of the refrigerant flowed in load-side heat exchanger 2
Power adjustment.The decompressor 6 of this example is the electronics that aperture can be made to change based on the instruction from aftermentioned control device 101
Expansion valve.Also thermal expansion valve (for example, solenoid valve one-piece type thermal expansion valve) can be used as decompressor 6.
Heat source side heat exchanger 1 is the refrigerant flow in refrigerant circuit 110 and passes through outdoor draft fan (not
Diagram) etc. the heat exchange of the outdoor air of air-supplies air-refrigerant heat exchanger.Heat source side heat exchanger 1 is usually operating
Shi Zuowei evaporator (heat dump) functions, and functions when defrosting operating as condenser (radiator).
The upstream side of the load-side heat exchanger 2 in refrigerant flowing in usual operating, is provided with disconnecting device 77
As the 1st disconnecting device.In the flowing of refrigerant in usual operating, disconnecting device 77 is arranged in refrigerant circuit 110
Compressor 3 downstream side, and be located at load-side heat exchanger 2 upstream side.As described in this embodiment, it is being provided with refrigeration
In the case where agent flow passage selector device 4, in the flowing of the refrigerant preferably in usual operating, the setting of disconnecting device 77 is being freezed
The downstream side of refrigerant flow path switching device 4 in agent circuit 110, and it is located at the upstream side of load-side heat exchanger 2.It uses
The open and close valve (for example, solenoid valve, flow rate regulating valve or electric expansion valve etc.) controlled by aftermentioned control device 101 is as cutting
Device 77.It is in when the operating of refrigerant circuit 110 of the disconnecting device 77 when including usually operating and including defrosting when operating
Opening state.If making disconnecting device 77 become closed state by the control of control device 101, the flowing of refrigerant is cut off.
In addition, the downstream side of the load-side heat exchanger 2 in the flowing of the refrigerant in usual operating, is provided with cutting
Device 78 is used as the 2nd disconnecting device.In the flowing of refrigerant in usual operating, disconnecting device 78 is arranged in refrigerant circuit
The downstream side of load-side heat exchanger 2 in 110, and it is located at the upstream side of heat source side heat exchanger 1.Using aftermentioned by controlling
The open and close valve (for example, solenoid valve, flow rate regulating valve or electric expansion valve etc.) that device 101 processed controls is used as disconnecting device 78.It cuts
It is in the open state when the operating of the refrigerant circuit 110 including breaking device 78 when including usually operating and when defrosting operates.
If making disconnecting device 78 become closed state by the control of control device 101, the flowing of refrigerant is cut off.
Here, in the case where decompressor 6 is electric expansion valve or the one-piece type thermal expansion valve of solenoid valve, decompression dress
Disconnecting device 78 can be doubled as by setting 6.That is, being electric expansion valve or the one-piece type thermal expansion valve of solenoid valve in decompressor 6
In the case of, the setting of disconnecting device 78 can be omitted, functions decompressor 6 also as the 2nd disconnecting device.In other words,
In the case where disconnecting device 78 is electric expansion valve or the one-piece type thermal expansion valve of solenoid valve, decompressor 6 can be omitted
Setting, function disconnecting device 78 also as decompressor.
For example, using the strong combustion property refrigerant such as micro- combustion property refrigerant such as R1234yf, R1234ze (E) or R290, R1270
As the refrigerant recycled in refrigerant circuit 110.These refrigerants can be used as the use of unitary system cryogen, can also be used as
Two or more mixed mix refrigerants are used.Hereinafter, in the presence of that will have micro- combustion degree or more (for example, in ASHRAE34
Classification in be 2L or more) combustible refrigerant be referred to as the feelings of " with flammable refrigerant " or " combustible refrigerant "
Condition.Alternatively, it is also possible to use the noninflammability such as R407C, R410A with noninflammability (for example, being 1 in the classification of ASHRAE34)
Refrigerant is as the refrigerant recycled in refrigerant circuit 110.These refrigerants are under atmospheric pressure (for example, temperature is room temperature
(25 DEG C)) there is the density bigger than air.In addition it is also possible to which R717 (ammonia) etc. is used to have virose refrigerant as freezing
The refrigerant recycled in agent circuit 110.
Including compressor 3, refrigerant flow path switching device 4, disconnecting device 77, load-side heat exchanger 2, disconnecting device
78, the refrigerant circuit 110 of decompressor 6 and heat source side heat exchanger 1 is all contained in outdoor unit 100.
In addition, being provided with control device 101 in outdoor unit 100, refrigerant circuit 110 is mainly controlled (for example, compressor
3, refrigerant flow path switching device 4, disconnecting device 77,78, decompressor 6 and outdoor draft fan (not shown) etc.) movement.
Control device 101 has microcomputer, which has port CPU, ROM, RAM, I/O etc..101 energy of control device
Enough via control line 102, it is in communication with each other aftermentioned control device 201 with operation portion 202.
Next, being illustrated to the example of the movement of refrigerant circuit 110.In Fig. 1, indicate to freeze with solid arrow
The flow direction of the refrigerant in usual operating in agent circuit 110.In usual operating, refrigerant circuit 110 is constituted are as follows:
Refrigerant flow path is switched to as indicated with solid arrow by refrigerant flow path switching device 4, and high temperature and pressure
Refrigerant flow into load-side heat exchanger 2.
The gas refrigerant of the high temperature and pressure sprayed from compressor 3 passes through refrigerant flow path switching device 4 and opening state
Disconnecting device 77, flow into the refrigerant flow path of load-side heat exchanger 2.In usual operating, load-side heat exchanger 2 is made
It plays a role for condenser.That is, carrying out the refrigerant flowed in refrigerant flow path and in water in load-side heat exchanger 2
The heat exchange of flowing water in flow path, thus by the condensation heat of refrigerant to water-cooled.As a result, in load-side heat exchanger 2
The refrigerant condensation flowed in refrigerant flow path is to the liquid refrigerant as high pressure.In addition, in load-side heat exchanger 2
Flowing water is heated by the heat dissipation from refrigerant in water flow road.
It is flowed into disconnecting device 78 of the liquid refrigerant Jing Guo opening state for the high pressure that load-side heat exchanger 2 condenses
Decompressor 6 is depressurized to become the two phase refrigerant of low pressure.The two phase refrigerant of low pressure is flowed into heat source side heat exchanger
1.In usual operating, heat source side heat exchanger 1 is functioned as evaporator.That is, being carried out in heat source side heat exchanger 1
In the heat exchange of the refrigerant and the outdoor air blown by outdoor draft fan of internal circulation, the heat of evaporation of refrigerant is from outdoor
It is absorbed in air.Flow into the refrigerant evaporation of heat source side heat exchanger 1 as a result, to become the gas refrigerant of low pressure.It is low
The gas refrigerant of pressure is sucked into compressor 3 via refrigerant flow path switching device 4.It is sucked into the refrigerant quilt of compressor 3
Compression is to the gas refrigerant as high temperature and pressure.In usual operating, above circulation is continuously repeated.
Next, the example of movement when operating to defrosting is illustrated.In Fig. 1, refrigerant is indicated with dotted arrow
The flow direction of refrigerant when defrosting in circuit 110 operates.When defrosting operating, refrigerant circuit 110 is constituted are as follows: is passed through
Refrigerant flow path is switched to as indicated with dotted arrow by refrigerant flow path switching device 4, and the system of high temperature and pressure
Cryogen flows into heat source side heat exchanger 1.
The gas refrigerant for the high temperature and pressure being discharged from compressor 3 flows into heat source by refrigerant flow path switching device 4
Side heat exchanger 1.When defrosting operating, heat source side heat exchanger 1 is functioned as condenser.That is, in heat source side heat exchange
In device 1, radiate in the condensation heat of the refrigerant of internal circulation to the frost on the surface for being attached to heat source side heat exchanger 1.Exist as a result,
The refrigerant of the internal circulation of heat source side heat exchanger 1 condenses and becomes the liquid refrigerant of high pressure.In addition, being attached to heat source side
The frost on the surface of heat exchanger 1 is melted and the heat dissipation from refrigerant.
Become the two of low pressure via decompressor 6 in the liquid refrigerant of the condensed high pressure of heat source side heat exchanger 1
Phase refrigerant, and pass through the disconnecting device 78 of opening state, flow into the refrigerant flow path of load-side heat exchanger 2.It is defrosting
When operating, load-side heat exchanger 2 is functioned as evaporator.That is, carrying out in load-side heat exchanger 2 in refrigerant
The heat exchange of the refrigerant flowed in flow path and the flowing water in water flow road, the heat of evaporation of refrigerant are absorbed from water.As a result,
The refrigerant evaporation flowed in the refrigerant flow path of load-side heat exchanger 2 is to the gas refrigerant as low pressure.The gas
Cryogen is sucked into compressor 3 via the disconnecting device 77 and refrigerant flow path switching device 4 of opening state.It is sucked into
The refrigerant of compressor 3 is formed the gas refrigerant of high temperature and pressure by compression.In defrosting operating, continuously repeat above
Circulation.
Next, being illustrated to water loop 210.The water loop 210 of present embodiment is the closed circuit for recycling water.
In Fig. 1, the flow direction of water is indicated with hollow block arrow.Water loop 210 is by by the water loop of 100 side of outdoor unit and interior
The water loop of 200 side of machine is connected and is constituted.The duplexure that water loop 210 has major loop 220, constitutes hot water supply circuit
221 and constitute heating circuit a part duplexure 222.Major loop 220 constitutes a part of closed circuit.Branch
Circuit 221,222 is respectively relative to 220 branch of major loop and connects.Duplexure 221,222 is connected in parallel to each other setting.Duplexure
221 together form closed circuit with major loop 220.Duplexure 222 and major loop 220 and it is connected to the duplexure
222 heating equipment 300 etc. together forms closed circuit.Heating equipment 300 and indoor unit 200 are independently disposed to interior.Make
Use radiator or floor heating device etc. as heating equipment 300.
In the present embodiment, it enumerates for water as the thermal medium to circulate in water loop 210, but load also can be used
Other liquid thermal mediums such as cryogen are as thermal medium.
Major loop 220 has filter screen 56, flow switch 57, load-side heat exchanger 2, booster water heater 54 and pump
The 53 equal structures via water piping connection.In the midway for the water piping for constituting major loop 220, it is provided with for water loop to be discharged
The discharge outlet 62 of water in 210.The downstream of major loop 220 and the triple valve 55 for having an inflow entrance and two outfluxes
The inflow entrance of (example of branch portion) connects.In triple valve 55, there is duplexure 221,222 from 220 branch of major loop.It is main
The upstream end in circuit 220 is connect with merging part 230.At merging part 230, the interflow of duplexure 221,222 to major loop 220.From
Merging part 230 becomes major loop 220 via water loop 210 of the load-side heat exchanger 2 until triple valve 55.
The load-side heat exchanger 2 of major loop 220 is set to outdoor unit 100.Load-side heat exchanger in major loop 220
Equipment other than 2 is set to indoor unit 200.That is, the major loop 220 of water loop 210 is to cross over outdoor unit 100 and indoor unit 200
Mode be arranged.A part of major loop 220 is set to outdoor unit 100, and another part of major loop 220 is set to indoor unit
200.Connect between outdoor unit 100 and indoor unit 200 via two connecting pipings 211,212 of a part for constituting major loop 220
It connects.
Pump 53 is the water to pressurize in water loop 210 and the device for recycling it in water loop 210.Booster water heater 54 is
When the heating efficiency of outdoor unit 100 is insufficient, the device of the water in further heating water return 210.Triple valve 55 is
For switching the device of the flowing of the water in water loop 210.For example, triple valve 55 is to the water in major loop 220 in duplexure
Still in 222 side of duplexure, circulation switches over 221 sides circulation.Filter screen 56 is the dress for removing the scale in water loop 210
It sets.Flow switch 57 be for detect the flow of the water recycled in water loop 210 whether the device more than specified amount.It can also
To use flow sensor to replace flow switch 57.
Pressure relief valve 70 (example of pressure protective device) is connected in booster water heater 54.That is, pressurization heating
Device 54 becomes interconnecting piece of the pressure relief valve 70 relative to water loop 210.Later, exist the interconnecting piece of pressure relief valve 70 only
The case where being expressed as " interconnecting piece ".Pressure relief valve 70 is protective device, prevents the water loop 210 of the temperature change with water
The excessive rising of interior pressure.Based on the pressure in water loop 210, pressure relief valve 70 releases water to the external of water loop 210.
For example, pressure rise in water loop 210 is in the case where being more than the pressure control range of expansion drum 52 (aftermentioned), opening pressure
Power relief valve 70, and the water in water loop 210 is discarded to outside from pressure relief valve 70.Pressure relief valve 70 is set to interior
Machine 200.It is to carry out the pressure guarantor to the water loop 210 in indoor unit 200 that pressure relief valve 70, which is set to indoor unit 200,
Shield.
The one end become from the piping 72 on the water flow road of 220 branch of major loop is connected in the shell of booster water heater 54.
Pressure relief valve 70 is installed in the other end of piping 72.That is, pressure relief valve 70 connects via piping 72 and booster water heater 54
It connects.It is in booster water heater 54 that water temperature, which is highest, in major loop 220.Therefore, booster water heater 54 is most suitable as connection
The interconnecting piece of pressure relief valve 70.In addition, it is assumed that in the case where pressure relief valve 70 to be connect with duplexure 221,222,
It needs that pressure relief valve 70 is respectively set in each duplexure 221,222.In the present embodiment, pressure relief valve 70 and master
Circuit 220 connects, therefore the quantity of pressure relief valve 70 is one.
The midway of piping 72 is provided with branch portion 72a.One end of piping 75 is connected in branch portion 72a.In piping 75
The other end be connected with expansion drum 52.That is, expansion drum 52 is connect via piping 75,72 with booster water heater 54.Expansion drum 52 is
For the pressure change in the water loop 210 of the temperature change with water to be controlled device within the specified scope.
Major loop 220 is provided with refrigerant leakage detecting device 98.Refrigerant leakage detecting device 98, which is connected to, to be led back
Between load-side heat exchanger 2 in road 220 and booster water heater 54 (interconnecting piece).Refrigerant leakage detecting device 98 is detection
Refrigerant is from refrigerant circuit 110 to the device of the leakage of water loop 210.If refrigerant is from refrigerant circuit 110 to water loop
210 leakages, then the pressure in water loop 210 rises.Therefore, refrigerant leakage detecting device 98 can be based in water loop 210
Pressure (value of pressure or the time change of pressure), detect leakage of the refrigerant to water loop 210.It leaks and examines as refrigerant
Survey device 98, such as pressure sensor or pressure switch (high-voltage switch gear) using the pressure in detection water loop 210.Such as it presses
Power switch can be electric, be also possible to use the mechanical of diaphragm.Refrigerant leakage detecting device 98 will test signal
It exports to control device 101.
In the present example, disconnecting device 77,78 and refrigerant leakage detecting device 98 are all set in outdoor unit 100.By
This, can via control line by control device 101, disconnecting device 77,78 and refrigerant leakage detecting device 98 in outdoor unit
Connection in 100, therefore can reduce cost.In addition, the cutting based on the detection signal from refrigerant leakage detecting device 98
The control (aftermentioned) of device 77,78 is completed in outdoor unit 100, therefore the versatility of outdoor unit 100 improves, thus outdoor unit
100 combine freedom degree raising with various indoor units.In addition, when refrigerant leaks, output connects refrigerant leakage detecting device 98
In the case where point signal, refrigerant leakage detecting device 98 and disconnecting device 77,78 can not also be straight via control device 101
It connects in succession.
The duplexure 221 for constituting hot water supply circuit is set to indoor unit 200.The upstream end of duplexure 221 and three
One outflux of port valve 55 connects.The downstream of duplexure 221 is connect with merging part 230.It is provided in duplexure 221
Coil 61.Coil 61 is built in the internal hot-water storage tank 51 for accumulating water.Coil 61 be by with the branch in water loop 210
The heat exchange of the water (warm water) recycled in circuit 221 lodges in the heating mechanism of the water inside hot-water storage tank 51 to heating.
In addition, hot-water storage tank 51 is built-in with immersion heater 60.Immersion heater 60 is for that will lodge in hot-water storage tank
The heating mechanism that water inside 51 further heats.
Top in hot-water storage tank 51, such as it is connected with the cleaning circuit side line 81a (example with connections such as showers
Such as, hot water supply is piped).Lower part in hot-water storage tank 51 is connected with cleaning circuit side line 81b (for example, make-up water is matched
Pipe).In the lower part of hot-water storage tank 51, it is provided with the discharge outlet 63 for the water in hot-water storage tank 51 to be discharged.In order to anti-
Only due to causing the temperature of internal water to reduce to external heat dissipation, hot-water storage tank 51 is covered with heat-insulating material (not shown)
Lid.Such as by felt, Xin Xueli (Thinsulate, registered trademark), VIP (Vacuum Insulation Panel- vacuum every
Hot plate) etc. be used for heat insulating material.
The duplexure 222 for constituting a part in heating circuit is set to indoor unit 200.Duplexure 222, which has, to be sent into
Pipe 222a and recurrent canal 222b.The upstream end for being sent into pipe 222a is connect with another outflux of triple valve 55.It is sent into pipe 222a
Downstream and recurrent canal 222b upstream end respectively with heating circuit side line 82a, 82b connect.The downstream of recurrent canal 222b
End is connect with merging part 230.As a result, be sent into pipe 222a and recurrent canal 222b respectively via heating circuit side line 82a, 82b with
Heating equipment 300 connects.Although heating circuit side line 82a, 82b and heating equipment 300 indoors, it is set to indoor unit
200 outside.Duplexure 222 and heating circuit side line 82a, 82b and heating equipment 300 constitute heating circuit together.
Pressure relief valve 301 is connected in heating circuit side line 82a.Pressure relief valve 301 is prevented in water loop 210
Pressure the protective device excessively risen, for example, have with pressure relief valve 70 similarly construct.For example, in heating circuit
In the case that pressure in side line 82a is higher than setting pressure, open pressure relief valve 301, from pressure relief valve 301 to outside
Release the water in heating circuit side line 82a.Although pressure relief valve 301 is indoors, it is set to the outside of indoor unit 200.
Heating equipment 300, heating circuit side line 82a, 82b and pressure relief valve 301 in present embodiment are not
A part of Teat pump hot water supply heating combined equipment 1000, but constructed according to the case where each object by Contraction in Site personnel
Equipment.For example, there are heat source machines to be updated in using existing equipment of the boiler as the heat source machine of heating equipment 300
The case where Teat pump hot water supply heating combined equipment 1000.In this case, if be maintained for as former state without especially inconvenience
Utilize heating equipment 300, heating circuit side line 82a, 82b and pressure relief valve 301.It is therefore preferable that Teat pump hot water supply
Heating combined equipment 1000 can be connect either with or without pressure relief valve 301 with various equipment.
Machine 200 is provided with mainly to water loop 210 (for example, pump 53, booster water heater 54, triple valve 55 etc.) indoors
Act the control device 201 controlled.Control device 201 have microcomputer, the microcomputer have CPU, ROM,
Port RAM, I/O etc..Control device 201 is formed to communicate with each other with control device 101 and operation portion 202.
Operation portion 202 is configured to user and is able to carry out the operation of Teat pump hot water supply heating combined equipment 1000 and various sets
It is fixed.The operation portion 202 of this example has reporting unit of the display unit 203 as report information.Heat pump can be shown in display unit 203
The various information such as the state of hot water supply heating combined equipment 1000.Operation portion 202 is for example set to the surface of shell of indoor unit 200.
Next, in the case where damaged to the next door that refrigerant flow path and water flow road are isolated in load-side heat exchanger 2
Movement be illustrated.Load-side heat exchanger 2 is functioned when defrosting operating as evaporator.Therefore, it is especially removing
When frost operating, there is a situation where that the next door of load-side heat exchanger 2 is damaged due to freezing etc. for water.In general, it is loading
The pressure of the refrigerant flowed in the refrigerant flow path of side heat exchanger 2 is in usual operating and when defrosting operating, can than
The pressure of flowing water is high in the water flow road of load-side heat exchanger 2.Therefore, in the breakage of the next door of load-side heat exchanger 2
In the case of, in usual operating and when defrosting operating, the refrigerant of refrigerant flow path can flow out to water flow road, thus refrigerant
It is mixed into the water on water flow road.At this point, the refrigerant being mixed into water due to pressure reduction and gasify.In addition, due to pressure ratio
The high refrigerant of water is mixed into water, and the pressure in water loop 210 rises.
The refrigerant to the water of water loop 210 is mixed into not only to the flowing along common water in load-side heat exchanger 2
Direction (that is, from load-side heat exchanger 2 towards the direction of booster water heater 54) flowing, due to pressure difference also to it is common
Opposite direction (that is, from load-side heat exchanger 2 towards the direction of the merging part 230) flowing of the flowing of water.As this example,
In the case where the major loop 220 of water loop 210 is provided with pressure relief valve 70, the refrigerant being mixed into water can be from pressure
Relief valve 70 is discarded to interior together with water.In addition, as this example, in heating circuit side line 82a or heating circuit side
In the case that piping 82b is provided with pressure relief valve 301, the refrigerant being mixed into water can be from pressure relief valve 301 and water
It is discarded to interior together.That is, pressure relief valve 70,301 is discarded to as will be mixed into the refrigerant of the water in water loop 210
The valve of the outside of water loop 210 functions.In the case where refrigerant has flammable situation, if refrigerant is discarded to interior,
It is possible that generating combustible concentration region indoors.
In the present embodiment, refrigerant is being detected based on the detection signal from refrigerant leakage detecting device 98
In the case where leaking to water loop 210, control device 101 stops compressor 3 and becomes disconnecting device 77,78 to close shape
State.The refrigerant of refrigerant circuit 110 is cut off at as a result, by disconnecting device 77,78 two before and after the load-side heat exchanger 2
Flowing.That is, load-side heat exchanger 2 becomes the state cut off in the flowing of refrigerant from refrigerant circuit 110.Therefore,
The refrigeration dose leaked in load-side heat exchanger 2 to water loop 210 can be inhibited be present in load-side heat exchanger 2
Refrigeration dose below.Therefore, according to the present embodiment, refrigerant is able to suppress to let out from pressure relief valve 70,301 to interior
Leakage.
Fig. 2 is to indicate heat pump involved in modified embodiment of the present embodiment using the loop diagram of the outline structure of equipment.Such as
Shown in Fig. 2, this variation is different from structure shown in FIG. 1 on this point load-side heat exchanger 2 is contained in indoor unit 200.
Refrigerant circuit 110 is arranged in a manner of across outdoor unit 100 and indoor unit 200.A part of refrigerant circuit 110 is set to
Outdoor unit 100, another part of refrigerant circuit 110 are set to indoor unit 200.Between outdoor unit 100 and indoor unit 200 via
Two connecting pipings 111,112 for constituting a part of refrigerant circuit 110 connect.According to this modification, it can also obtain and Fig. 1
Shown in the identical effect of structure.In addition, in this variation, disconnecting device 77,78 and refrigerant leakage detecting device 98 are equal
It is set to indoor unit 200.Refrigerant leakage detecting device 98 to control device 201 export detection signal, disconnecting device 77,78 by
Control device 201 controls.Thereby, it is possible to leak control device 201, disconnecting device 77,78 and refrigerant via control line
Detection device 98 is attached in machine 200 indoors, therefore can reduce cost.In addition, based on refrigerant leak detection is come from
The control of the disconnecting device 77,78 of the detection signal of the device 98 interior completion of machine 200 indoors, therefore, the versatility of indoor unit 200
It improves, so that the combination free degree of indoor unit 200 and various outdoor units improves.
Next, being illustrated to the allocation position of refrigerant leakage detecting device 98.Fig. 3 is to indicate present embodiment institute
The heat pump being related to utilizes the explanatory diagram of the example of the allocation position of the refrigerant leakage detecting device 98 in equipment.In Fig. 3, make
For the example of the allocation position of refrigerant leakage detecting device 98, show that there are five allocation position A~E.In allocation position A and B
In the case where, refrigerant leakage detecting device 98 is connect with piping 72.That is, refrigerant leakage detecting device 98 and pressure relief valve
70 connect in booster water heater 54 (interconnecting piece) with major loop 220 in the same manner.In this case, in load-side heat exchanger
2 to the refrigerant that water loop 210 leaks before the releasing of pressure relief valve 70, can by refrigerant leakage detecting device 98
By the leakage of ground detection refrigerant.If detecting the leakage of refrigerant to water loop 210 by refrigerant leakage detecting device 98,
Then by disconnecting device 77,78 immediately two before and after the load-side heat exchanger 2 at cut off the refrigerant of refrigerant circuit 110
Flowing.Therefore, refrigerant can be inhibited from pressure relief valve 70 to indoor leakage rate in minimum limit.It is leaked in refrigerant
Detection device 98 connect or be connected to load-side heat exchanger 2 with the load-side heat exchanger 2 in major loop 220 and pressurization adds
In the case where between hot device 54, same effect can be also obtained.
On the other hand, in the case where allocation position C and D, refrigerant leakage detecting device 98 is connected in major loop 220
Booster water heater 54 (interconnecting piece) and triple valve 55 between.In this case, exist through refrigerant leakage detecting device 98
Before the leakage for detecting refrigerant, refrigerant is from the case where the releasing of pressure relief valve 70.But as described above, if detection
To refrigerant to the leakage of water loop 210, then two before and after the load-side heat exchanger 2 at cut off refrigerant circuit 110 immediately
Refrigerant flowing.Therefore, refrigerant can be inhibited from pressure relief valve 70 to indoor leakage rate in minimum limit.
In the case where allocation position E, refrigerant leakage detecting device 98 is connected to the friendship of the load-side heat in major loop 220
Between parallel operation 2 and merging part 230.It in this case, can be in the refrigerant for leaking to water loop 210 from pressure relief valve 301
Before releasing, the leakage of refrigerant is reliably detected by refrigerant leakage detecting device 98.If being filled by refrigerant leak detection
It sets 98 and detects the leakage of refrigerant to water loop 210, then through disconnecting device 77,78 before and after load-side heat exchanger 2
The flowing of the refrigerant of refrigerant circuit 110 is cut off at two immediately.It therefore, can be by refrigerant from pressure relief valve 301 to room
Interior leakage rate inhibits in minimum limit.
In all structures shown in the FIG. 1 to FIG. 3, refrigerant leakage detecting device 98 be not with by Contraction in Site
Duplexure (for example, heating circuit side line 82a, 82b and heating equipment 300) connection of personnel's construction, but with lead back
Road 220 connects.Therefore, the installation and refrigeration of refrigerant leakage detecting device 98 can be carried out by the manufacturer of indoor unit 200
The connection of agent leak detecting device 98 and control device 201.Thus, it is also possible to avoid forgetting to install refrigerant leakage detecting device
98 and forget to connect the mistake of refrigerant leakage detecting device 98 etc.
Next, being illustrated to the allocation position of disconnecting device 77,78.Disconnecting device 77,78 is respectively arranged at refrigeration
The two sides across load-side heat exchanger 2 in agent circuit 110.In refrigerant circuit 110, from disconnecting device 77 via load
The volume in the section until side heat exchanger 2 to disconnecting device 78 is smaller, can more reduce from pressure relief valve 70 or pressure
The refrigerant leakage rate of power relief valve 301.It is therefore preferable that making the volume of compressor 3 and heat source side heat exchanger 1 etc. biggish
Equipment is not included in above-mentioned section.That is, it is preferred that disconnecting device 77 is set to negative in the flowing of the refrigerant in usual operating
The upstream side of side heat exchanger 2 is carried, and is located at the downstream side of compressor 3.As in the present embodiment, in refrigerant circuit
In the case that 110 are provided with refrigerant flow path switching device 4, in the flowing of the refrigerant preferably in usual operating, cutting dress
77 upstream sides for being configured at load-side heat exchanger 2 are set, and are located at the downstream side of refrigerant flow path switching device 4.In addition, excellent
Select the downstream side that load-side heat exchanger 2 is configured in the flowing of refrigerant of the disconnecting device 78 in usual operating, and position
In the upstream side of heat source side heat exchanger 1.
As described above, (heat pump utilizes Teat pump hot water supply heating combined equipment 1000 involved in present embodiment
One example of equipment) have the water for making the refrigerant circuit 110 of refrigerant circulation, water (example of thermal medium) being made to circulate
(the heat of load-side heat exchanger 2 of the heat exchange of circuit 210 (example in thermal medium circuit) and progress refrigerant and water
One example of exchanger).Water loop 210 has the major loop 220 via load-side heat exchanger 2.Major loop 220 includes
Triple valve 55 (example of branch portion), is set to the downstream of major loop 220, is connected with from 220 branch of major loop
Multiple duplexures 221,222；And merging part 230, it is set to the upstream end of major loop 220, and be connected with major loop 220
Multiple duplexures 221,222 at interflow.It is connected with based on the pressure in water loop 210 in major loop 220 to water loop 210
Outside releases the pressure relief valve 70 (example of pressure protective device) of water and detects refrigerant from refrigerant circuit 110
To the refrigerant leakage detecting device 98 of the leakage of water loop 210.Refrigerant circuit 110 across load-side heat exchanger 2 and
It is provided with disconnecting device 77 (example of the 1st disconnecting device) and disconnecting device 78 (example of the 2nd disconnecting device).
According to this structure, even if in the case where refrigerant leaks to water loop 210, disconnecting device 77,78 can also be passed through
The flowing of the refrigerant of refrigerant circuit 110 is cut off at two before and after the load-side heat exchanger 2.Therefore, it is able to suppress refrigeration
Agent is from pressure relief valve 70 to indoor leakage.In addition, from the point of view of 220 side of major loop, it is possible in triple valve 55 or merging part
At the site operation circuit that the water loop 210 with indoor unit 200 is connect (for example, heating circuit side line 82a, 82b) before 230
It is provided with pressure relief valve 301.According to above structure, even if construction circuit is provided with pressure relief valve 301 at the scene, also can
Inhibit refrigerant from pressure relief valve 301 to indoor leakage.
In the Teat pump hot water supply heating combined equipment 1000 involved in present embodiment, disconnecting device 77,78 is to detect
Become the open and close valve closed after to refrigerant to the leakage of water loop 210.It according to this structure, can be in refrigerant to water loop
In the case where 210 leakages, the flowing of the refrigerant of refrigerant circuit 110 is cut off immediately.
In the Teat pump hot water supply heating combined equipment 1000 involved in present embodiment, pressure relief valve 70 and major loop
In 220 booster water heater 54 (example of interconnecting piece) connection, the booster water heater 54 be located at load-side heat exchanger 2,
Between the side (in the present example, being triple valve 55) in triple valve 55 or merging part 230.Refrigerant leakage detecting device 98
With another (in the present example, being merging part 230) connection of the triple valve 55 in major loop 220 or merging part 230, or connection
In this another between (in the present example, being merging part 230) and booster water heater 54 (example of interconnecting piece), or with increasing
Press heater 54 (example of interconnecting piece) connection.It according to this configuration, can be in the refrigerant for leaking to water loop 210 to room
Before interior releasing, the leakage of refrigerant is reliably detected.
In the Teat pump hot water supply heating combined equipment 1000 involved in present embodiment, 98 base of refrigerant leakage detecting device
The leakage of refrigerant to water loop 210 is detected in the pressure in water loop 210.According to this configuration, system can be reliably detected
The leakage of cryogen.
In the Teat pump hot water supply heating combined equipment 1000 involved in present embodiment, disconnecting device 77 is set to refrigerant
Between compressor 3 in circuit 110 and load-side heat exchanger 2, disconnecting device 78 is set to the load in refrigerant circuit 110
Between side heat exchanger 2 and heat source side heat exchanger 1.That is, the refrigerant at heating operation (among this example, usually operating)
In the flowing of refrigerant in circuit 110, disconnecting device 77 is set to load-side heat exchange in the downstream side of compressor 3
The upstream side of device 2, disconnecting device 78 are set to the upper of heat source side heat exchanger 1 in the downstream side of load-side heat exchanger 2
Swim side.According to this configuration, enable to from disconnecting device 77 via the area until load-side heat exchanger 2 to disconnecting device 78
Between, it does not include compressor 3 and the biggish equipment of 1 isometric(al) of heat source side heat exchanger.Therefore, can make to come from pressure relief valve 70
Or the refrigerant leakage rate of pressure relief valve 301 is reduced.
In the Teat pump hot water supply heating combined equipment 1000 involved in present embodiment, disconnecting device 78 is returned as refrigerant
The decompressor on road 110 functions.According to this configuration, the component count of Teat pump hot water supply heating combined equipment 1000 can be cut down
Amount.
Teat pump hot water supply heating combined equipment 1000 involved in present embodiment is also equipped with: outdoor unit 100, accommodates refrigeration
Agent circuit 110, a part of water loop 210 and load-side heat exchanger 2；And indoor unit 200, accommodate water loop 210
Another part.Outdoor unit 100 accommodates disconnecting device 77,78 and refrigerant leakage detecting device 98.According to this structure, can
Each by control device 101, disconnecting device 77,78 and refrigerant leakage detecting device 98 carries out in outdoor unit 100
Connection, therefore can reduce cost.In addition, according to this structure, can be improved the versatility of outdoor unit 100, so as to make room
Outer machine 100 combines freedom degree raising with various indoor units.
Teat pump hot water supply heating combined equipment 1000 involved in present embodiment is also equipped with: outdoor unit 100, accommodates refrigeration
The a part in agent circuit 110；And indoor unit 200, accommodate another part of refrigerant circuit 110, water loop 210 and negative
Carry side heat exchanger 2.Indoor unit 200 accommodates disconnecting device 77,78 and refrigerant leakage detecting device 98.According to this structure, energy
It is enough to be attached in control device 201, disconnecting device 77,78 and refrigerant leakage detecting device 98 indoors machine 200, because
This can reduce cost.In addition, according to this configuration, can be improved the versatility of indoor unit 200, so as to make indoor unit 200
It is improved with the combination free degree of various outdoor units.
In the Teat pump hot water supply heating combined equipment 1000 involved in present embodiment, refrigerant is also possible to flammable system
Cryogen or toxic refrigerant.
Embodiment 2
Heat pump involved in embodiments of the present invention 2 is illustrated using equipment.Fig. 4 is to indicate present embodiment institute
The heat pump being related to utilizes the loop diagram of the outline structure of equipment.The structure of indoor unit 200 is mainly indicated in Fig. 4.In addition, right
In the constituent element with function same as embodiment 1 and effect, marks identical appended drawing reference and the description thereof will be omitted.Such as
Shown in Fig. 4, in the present embodiment, the boiling loop 240 heated to the water lodged in inside hot-water storage tank 51 is arranged
In the outside of hot-water storage tank 51.Boiling loop 240 has the water flow road for connecting the lower part of hot-water storage tank 51 with top.?
Boiling loop 240 is provided with boiling pump 241 and carries out the flowing water in boiling loop 240 to be flowed in duplexure 221
Water heat exchange boiling heat exchanger 242.If 241 movement of boiling pump, the water of the lower part of hot-water storage tank 51 flow into
Boiling loop 240.The water for flowing into boiling loop 240 is heated by the heat exchange for the heat exchanger 242 that boils, and is returned
To the top of hot-water storage tank 51.According to the present embodiment, effect same as embodiment 1 can also be obtained.
The invention is not limited to above embodiment, are able to carry out various modifications.
For example, in the above-described embodiment, as load-side heat exchanger 2, for listing heat-exchangers of the plate type, but only
If carrying out the heat exchanger of the heat exchange of refrigerant and thermal medium, load-side heat exchanger 2 is also possible to double hose heat exchange
Heat exchanger other than the heat-exchangerss of the plate type such as device.
In addition, in the above-described embodiment, utilizing equipment as heat pump, listing with Teat pump hot water supply device 100
For, but the present invention can also be suitable for other heat pumps such as cold and utilize equipment.
In addition, in the above-described embodiment, listing for having the indoor unit 200 of hot-water storage tank 51, but hot water is store
Depositing tank can also be provided separately with indoor unit 200.
Above-mentioned each embodiment, variation can be combined with each other to implement.
Description of symbols
1 ... heat source side heat exchanger；2 ... load-side heat exchangers；3 ... compressors；4 ... refrigerant flow path switching devices；
6 ... decompressors；51 ... hot-water storage tanks；52 ... expansion drums；53 ... pumps；54 ... booster water heaters；55 ... triple valves；56 ... mistakes
Strainer；57 ... flow switches；60 ... immersion heaters；61 ... coils；62,63 ... discharge outlet；70 ... pressure relief valves；72…
Piping；72a ... branch portion；75 ... pipings；77,78 ... disconnecting devices；81a, 81b ... clean circuit side line；82a, 82b ... system
Hot loop side line；98 ... refrigerant leakage detecting devices；100 ... outdoor units；101 ... control devices；102 ... control lines；
110 ... refrigerant circuits；111,112 ... connecting pipings；200 ... indoor units；201 ... control devices；202 ... operation portions；203…
Display unit；210 ... water loops；211,212 ... connecting pipings；220 ... major loops；221,222 ... duplexures；222a ... is sent into
Pipe；222b ... recurrent canal；230 ... merging part；240 ... boiling loops；241 ... boiling pumps；242 ... boiling heat exchangers；300…
Heating equipment；301 ... pressure relief valves；1000 ... Teat pump hot water supply heating combined equipments.
Claims (9)
1. a kind of heat pump utilizes equipment, which is characterized in that have:
Refrigerant circuit makes refrigerant circulation；
Thermal medium circuit, makes medium passing；And
Heat exchanger carries out the heat exchange of the refrigerant Yu the thermal medium,
The thermal medium circuit has the major loop via the heat exchanger,
The major loop includes
Branch portion is set to the downstream of the major loop, connects multiple duplexures from the major loop branch；And
Merging part is set to the upstream end of the major loop, and connection is collaborated in the multiple duplexure of the major loop,
It is connected with pressure protective device and refrigerant leakage detecting device in the major loop,
The heat exchanger is provided with the 1st disconnecting device and the 2nd disconnecting device in the refrigerant circuit.
2. heat pump according to claim 1 utilizes equipment, which is characterized in that
1st disconnecting device and the 2nd disconnecting device are to detect the refrigerant to the thermal medium loop leakage
When the open and close valve closed.
3. heat pump according to claim 1 or 2 utilizes equipment, which is characterized in that
The pressure protective device is connect with the interconnecting piece in the major loop, the connecting portion in the heat exchanger with it is described
Between a side in branch portion or the merging part,
The branch portion in the refrigerant leakage detecting device and the major loop or another party in the merging part connect
It connects, or is connected between described another party and the interconnecting piece, or connect with the interconnecting piece.
4. heat pump described in any one of claim 1 to 3 utilizes equipment, which is characterized in that
The refrigerant leakage detecting device detects the refrigerant to the heat based on the pressure in the thermal medium circuit
The leakage of medium loop.
5. heat pump according to any one of claims 1 to 4 utilizes equipment, which is characterized in that
1st disconnecting device is set between the compressor of the refrigerant circuit and the heat exchanger,
2nd disconnecting device is set between the heat exchanger and the heat source side heat exchanger of the refrigerant circuit.
6. heat pump according to claim 5 utilizes equipment, which is characterized in that
2nd disconnecting device as the refrigerant circuit decompressor and function.
7. heat pump described according to claim 1~any one of 6 utilizes equipment, which is characterized in that
The heat pump is also equipped with using equipment:
Outdoor unit accommodates the refrigerant circuit, a part in the thermal medium circuit and the heat exchanger；And
Indoor unit accommodates the another part in the thermal medium circuit,
The outdoor unit accommodates the 1st disconnecting device, the 2nd disconnecting device and the refrigerant leakage detecting device.
8. heat pump described according to claim 1~any one of 6 utilizes equipment, which is characterized in that
The heat pump is also equipped with using equipment:
Outdoor unit accommodates a part of the refrigerant circuit；And
Indoor unit accommodates another part, the thermal medium circuit and the heat exchanger of the refrigerant circuit,
The indoor unit accommodates the 1st disconnecting device, the 2nd disconnecting device and the refrigerant leakage detecting device.
9. heat pump described according to claim 1~any one of 8 utilizes equipment, which is characterized in that
The refrigerant is combustible refrigerant or toxic refrigerant.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2017/008001 WO2018158860A1 (en) | 2017-02-28 | 2017-02-28 | Apparatus using heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110337571A true CN110337571A (en) | 2019-10-15 |
Family
ID=63371378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780087175.2A Pending CN110337571A (en) | 2017-02-28 | 2017-02-28 | Heat pump utilizes equipment |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20190390884A1 (en) |
| EP (1) | EP3591312B1 (en) |
| JP (1) | JP6818865B2 (en) |
| CN (1) | CN110337571A (en) |
| WO (1) | WO2018158860A1 (en) |
Cited By (1)
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|---|---|---|---|---|
| WO2023273471A1 (en) * | 2021-06-29 | 2023-01-05 | 青岛海尔新能源电器有限公司 | Refrigerant detection method, apparatus, device, and storage medium |
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- 2017-02-28 EP EP17899065.1A patent/EP3591312B1/en active Active
- 2017-02-28 WO PCT/JP2017/008001 patent/WO2018158860A1/en unknown
- 2017-02-28 US US16/469,229 patent/US20190390884A1/en not_active Abandoned
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| WO2023273471A1 (en) * | 2021-06-29 | 2023-01-05 | 青岛海尔新能源电器有限公司 | Refrigerant detection method, apparatus, device, and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6818865B2 (en) | 2021-01-20 |
| US20190390884A1 (en) | 2019-12-26 |
| EP3591312A1 (en) | 2020-01-08 |
| JPWO2018158860A1 (en) | 2019-11-07 |
| WO2018158860A1 (en) | 2018-09-07 |
| EP3591312A4 (en) | 2020-03-04 |
| EP3591312B1 (en) | 2022-06-29 |
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Application publication date: 20191015 |