CN107044729A - A kind of cascade type heat pump water heater - Google Patents
A kind of cascade type heat pump water heater Download PDFInfo
- Publication number
- CN107044729A CN107044729A CN201710343165.2A CN201710343165A CN107044729A CN 107044729 A CN107044729 A CN 107044729A CN 201710343165 A CN201710343165 A CN 201710343165A CN 107044729 A CN107044729 A CN 107044729A
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- Prior art keywords
- circulation line
- heat exchanger
- stage
- compression circulation
- heat
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 230000006835 compression Effects 0.000 claims abstract description 89
- 238000007906 compression Methods 0.000 claims abstract description 89
- 239000007788 liquid Substances 0.000 claims description 32
- 230000008676 import Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 abstract description 5
- 239000008236 heating water Substances 0.000 abstract description 4
- 239000003507 refrigerant Substances 0.000 description 24
- 239000007789 gas Substances 0.000 description 18
- 238000010438 heat treatment Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 206010020852 Hypertonia Diseases 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
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- 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
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- 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
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control 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
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02742—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way 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)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention relates to technical field of water heaters, and in particular to a kind of cascade type heat pump water heater, including：One stage of compression circulation line and two-stage compression circulation line；3rd heat exchanger (3), is connected between the one stage of compression circulation line and the two-stage compression circulation line, and the two-stage compression circulation line is given for the heat transfer that will be absorbed from the one stage of compression circulation line；Storage tank (4), is arranged in the two-stage compression circulation line, for absorbing the heat in the two-stage compression circulation line to heat the water of internal reservoir.The invention provides a kind of thermal loss for reducing heat transferring medium in transmitting procedure, with the cascade type heat pump water heater for the efficiency for improving heating water.
Description
Technical field
The present invention relates to technical field of water heaters, and in particular to a kind of cascade type heat pump water heater.
Background technology
Teat pump boiler, also referred to as air-source water heater, are that the low-temperature heat quantity in air is absorbed into come, by fluorine medium gas
Change, then heated up by being pressurized after compressor compresses, then by heat exchanger conversion feedwater heating, the high temperature heat after compression is with this
To heat water temperature.Teat pump boiler overcomes solar water heater and adopts heat by sunlight and install the shortcoming of inconvenience.Due to air
Can the work of water heater be that, by media for heat exchange, therefore it does not need electrical heating elements directly to contact with water, it is to avoid electric hot water
The danger of device electric leakage, also prevent the danger that gas heater is possible to explode and is poisoned, more effectively controls gas heater
The air pollution that discharge waste gas is caused.Teat pump boiler generally includes compressor, pipe wing heat exchanger and water-storing tank, due to existing
The heat pump water-heating machine of technology typically uses single-stage compressor, and the compression ratio of compressor is larger during cold operation, causes heat-pump hot-water
Device reliability is relatively low.
In order to solve the above-mentioned technical problem, Chinese patent literature CN102297512A discloses a kind of cascade type heat pump system
System, including：First compressor, pipe wing heat exchanger and First Heat Exchanger are connected with each other by pipeline, the second compressor, the first heat exchange
Device and the second heat exchanger are connected with each other by pipeline, and the second heat exchanger is connected with the first water-storing tank, but the first water-storing tank
It is not directly connected in the circulation line that is formed by the second compressor, First Heat Exchanger and the second heat exchanger, but passes through
It is connected on outside first gate valve, the first water pump and the second magnetic valve outside the second heat exchanger, this is due to also set up in the patent document
There are radiator line, air-conditioning device pipeline, the first solar energy heat collector pipeline, the second solar energy heat collector pipeline and heat
Formula aids in water heater pipeline, only by the external effective connection that just can guarantee that between each above-mentioned pipeline of the first water-storing tank, and
First water-storing tank is undoubtedly added to the heat exchange number of times of heat transferring medium, while increasing the transport road of heat transferring medium after external
Footpath, such heat will inevitably lose in transmitting procedure, finally influence its changing with the water in water-storing tank
The thermal efficiency.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome cascade type heat pump water-heater heat-exchanging of the prior art to be situated between
The heat exchange number of times of matter is more, and transmission path is longer, causes heat to lose in the transmission more, and the finally efficiency of influence heating water
Defect so that provide it is a kind of reduce thermal loss of the heat transferring medium in transmitting procedure, answered with the efficiency for improving heating water
Stacked Teat pump boiler.
In order to solve the above-mentioned technical problem, the invention provides a kind of cascade type heat pump water heater, including：
One stage of compression circulation line and two-stage compression circulation line；
3rd heat exchanger, is connected between the one stage of compression circulation line and the two-stage compression circulation line, is used for
The two-stage compression circulation line is given by the heat transfer absorbed from the one stage of compression circulation line；
Storage tank, is arranged in the two-stage compression circulation line, for absorbing in the two-stage compression circulation line
Heat is to heat the water of internal reservoir.
Divide in described cascade type heat pump water heater, the one stage of compression circulation line and the two-stage compression circulation line
First Heat Exchanger and the second heat exchanger are not provided with, and the First Heat Exchanger works when different with second heat exchanger.
Described cascade type heat pump water heater, the one stage of compression circulation line include be sequentially connected stage compressor,
3rd heat exchanger, the first reservoir, first throttle device, First Heat Exchanger and the first gas-liquid separator；And/or
The two-stage compression circulation line includes split-compressor, storage tank, the second reservoir, the second section being sequentially connected
Flow device, the second heat exchanger, the 3rd heat exchanger and the second vapour liquid separator.
Described cascade type heat pump water heater, the import of second heat exchanger, which is provided with one, to be used to adjust described second
The control device that heat exchanger is switched on or switched off with the two-stage compression circulation line.
Described cascade type heat pump water heater, the control device be arranged in parallel the import in second heat exchanger with
And first switch and second switch between the import and outlet of second heat exchanger.
Described cascade type heat pump water heater, also sets respectively in the outside of the First Heat Exchanger and second heat exchanger
It is equipped with an air-supply arrangement for being used to provide convection current.
Described cascade type heat pump water heater, between the stage compressor and the 3rd heat exchanger and described two
A reversal valve is each provided between level compressor and the storage tank.
Described cascade type heat pump water heater, the reversal valve is four-way reversing valve.
Technical solution of the present invention, has the following advantages that：
1. the cascade type heat pump water heater that the present invention is provided, storage tank is arranged in two-stage compression circulation line, for inhaling
The heat in two-stage compression circulation line is received to heat the water of internal reservoir, so when ambient temperature is relatively low, two grades of pressures
Contracting circulation line not only absorbs the heat of itself generation, and the heat of one stage of compression circulation line itself generation is also absorbed simultaneously
And the heat absorbed from external environment, three partial heats are simultaneously for heating the water in storage tank, so as to solve heat pump
Water heater is the problem of efficiency is low at low ambient temperatures；In addition, storage tank is directly connected in two-stage compression circulation line, so
Heat transferring medium in two-stage compression circulation line absorb directly can just be carried out after heat with the water inside storage tank heat exchange so as to
It is heated, reduces loss of the heat in transmitting procedure, improve the efficiency of heating surface of water.
2. the cascade type heat pump water heater that the present invention is provided, is separately positioned on one stage of compression circulation line and two-stage compression is followed
First Heat Exchanger and the second heat exchanger in endless tube road work when different, and this is due to when ambient temperature is relatively low, it is not necessary to
Start the second heat exchanger, the heat that the heat and two-stage compression circulation line itself that one stage of compression circulation line is provided are produced is sufficient
Water enough in heating storage tank, so as to reduce the work load of two-stage compression circulation line；When ambient temperature is higher,
Only need to start the two-stage compression circulation line being joined directly together with storage tank with regard to the demand of heating water can be met, it is unnecessary to reduce
Energy waste.
3. the cascade type heat pump water heater that the present invention is provided, the import of the second heat exchanger be provided with one be used for adjust second
The control device that heat exchanger and two-stage compression circulation line are switched on or switched off, this makes it possible to intelligent control according to the actual requirements the
The break-make of two heat exchangers and two-stage compression circulation line, reduces unnecessary resource wave as far as possible on the premise of actual demand is met
Take.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the operation principle schematic diagram of the cascade type heat pump water heater of the present invention.
Description of reference numerals：
1- First Heat Exchangers；The heat exchangers of 2- second；The heat exchangers of 3- the 3rd；4- storage tanks；5- stage compressors；6- first is stored up
Liquid device；7- first throttle devices；The gas-liquid separators of 8- first；9- split-compressors；The reservoirs of 10- second；The throttling dresses of 11- second
Put；The gas-liquid separators of 12- second；13- first switches；14- second switches；15- air-supply arrangements；The four-way reversing valves of 16- first；
The four-way reversing valves of 17- second.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can just be combined with each other into conflict.
A kind of embodiment of cascade type heat pump water heater as shown in Figure 1, including one stage of compression circulation line and
Two-stage compression circulation line, per the refrigerant in one stage of compression circulation line by low-temperature low-pressure refrigerant after being handled through overcompression
Gas transition is high-temperature high-pressure refrigerant gas, is derived from heat, for carrying out heat exchange with the equipment in circulation line.
3rd heat exchanger 3, is connected between the one stage of compression circulation line and the two-stage compression circulation line, for will be from described
The heat transfer absorbed in one stage of compression circulation line gives the two-stage compression circulation line.In the present embodiment, one stage of compression
Circulation line is the left part in Fig. 1, and two-stage compression circulation line is the right part in Fig. 1, and the 3rd heat exchanger 3 is located at figure
1 center, including two imports and two outlets, the top and bottom of the 3rd heat exchanger 3 are each provided with an import and one
Outlet, to be connected respectively with one stage of compression circulation line and two-stage compression circulation line, and does not produce interference, the 3rd heat exchange mutually
Device 3 is arranged on the centre of whole device and is more convenient for the heat absorbed from one stage of compression circulation line passing to two grades of pressures rapidly
Contracting circulation line.Storage tank 4, is arranged in the two-stage compression circulation line, for absorbing the two-stage compression circulation line
In heat to heat the water of internal reservoir, to meet use demand of the people to hot water.The heat that storage tank 4 absorbs includes three
Part：The heat obtained after the compression of one stage of compression circulation line refrigerant, refrigerant exchanges the heat absorbed and two grades of pressures with extraneous
The heat obtained after the compression of contracting circulation line refrigerant, accordingly even when in the case where ambient temperature is relatively low, because one stage of compression is followed
Endless tube road has been provided previously by certain heat, and two-stage compression circulation line proceeds the compression of refrigerant on this basis
When, it is necessary to which the power of consumption is just smaller, therefore for heating the water of same volume, technical scheme is reduced often
The burden of one stage of compression circulation line, reduces production cost.
First Heat Exchanger 1 and are respectively arranged with the one stage of compression circulation line and the two-stage compression circulation line
Worked when two heat exchangers 2, the First Heat Exchanger 1 and different second heat exchanger 2.Specifically, the import of First Heat Exchanger 1
The one outlet of the 3rd heat exchanger 3 is connected, the outlet of the second heat exchanger 2 connects another import of the 3rd heat exchanger 3, and first changes
The hot heat exchanger 2 of device 1 and second is parallel connection.First Heat Exchanger 1, the second heat exchanger 2 and the 3rd heat exchanger 3 can change for double media
Hot device, or three media heat exchangers.When ambient temperature is relatively low, such as winter, First Heat Exchanger 1 and the 3rd exchanges heat
Device 3 works, and the second heat exchanger 2 does not work；When ambient temperature is higher, such as season in spring and autumn, the second heat exchanger 2 and the 3rd
Heat exchanger 3 works, and First Heat Exchanger 1 does not work.Can not only so ensure can be by the heating in time of the water in storage tank 4 with full
Sufficient use demand, also reduces the waste of the energy as far as possible, realizes the maximization of the utilization of resources.
In the present embodiment, the one stage of compression circulation line includes stage compressor 5, the 3rd heat exchanger being sequentially connected
3rd, the first reservoir 6, first throttle device 7, First Heat Exchanger and 1 first gas-liquid separator 8；With the two-stage compression circulation pipe
Road include be sequentially connected split-compressor 9, storage tank 4, the second reservoir 10, second throttling device 11, the second heat exchanger 2,
3rd heat exchanger 3 and the second vapour liquid separator 12.Stage compressor 5 and split-compressor 9 are used for the refrigerant in circulation line
High temperature and high pressure gas are changed into by low temperature low pressure gas；First reservoir 6 and the second reservoir 10 are used to change refrigerant with the 3rd
The liquid that hot device 3 or storage tank 4 are condensed after the heat exchange is stored；First throttle device 7 and second throttling device 11 are used for
Gas in refrigerant be cooled into the gas-liquid mixture of low-temp low-pressure；The heat exchanger 2 of First Heat Exchanger 1 and second is used for will
The gas-liquid mixture of low-temp low-pressure in circulation line carries out heat exchange with outside air, to absorb the heat in outside air
Amount, gas is become after evaporation；First gas-liquid separator 8 and the second gas-liquid separator 12 are used for will be a small amount of in the gas after evaporation
Liquid is respectively fed to stage compressor 5 after being separated and split-compressor 9 is compressed, so as to complete a circulation.
As a kind of embodiment, the import of second heat exchanger 2, which is provided with one, to be used to adjust described second
The control device that heat exchanger 2 is switched on or switched off with the two-stage compression circulation line.The control device is is arranged in parallel in institute
State the first switch 13 and second switch between the import of the second heat exchanger 2 and the import and outlet of second heat exchanger 2
14.In the present embodiment, first switch 13 and second switch 14 are respectively the first magnetic valve and the second magnetic valve.When needing
When two heat exchangers 2 are connected with two-stage compression circulation line, the first magnetic valve need to be only closed, the second magnetic valve is disconnected；When need
When second heat exchanger 2 is disconnected with two-stage compression circulation line, the second magnetic valve need to be only closed, disconnecting the first magnetic valve is
Can.
One is also respectively provided with the outside of the First Heat Exchanger 1 and second heat exchanger 2 is used to provide convection current
Air-supply arrangement 15.In the present embodiment, air-supply arrangement 15 is blower fan, under the heat exchanger 2 of First Heat Exchanger 1 and second
Side, outside air is sent into time in the heat exchanger 2 of First Heat Exchanger 1 and second, accelerates the exchange of heat.
Between the stage compressor 5 and the 3rd heat exchanger 3 and the split-compressor 9 and the storage tank
A reversal valve is each provided between 4.The reversal valve is four-way reversing valve, respectively the first four-way reversing valve 16 and the second four-way
Reversal valve 17.When refrigerant is exported from stage compressor 5 and two-stage compression device 9, respectively through the He of the first four-way reversing valve 16
The under shed of second four-way reversing valve 17 and upper shed；When refrigerant is exported from the heat exchanger 2 of First Heat Exchanger 1 and second, then
Respectively through the left opening and right opening of the first four-way reversing valve 16 and the second four-way reversing valve 17, the first gas-liquid separation is entered back into
The gas-liquid separator 12 of device 8 and second carries out the separation of gas and liquid, so ensures that refrigerant not same order in cyclic process
The independence of section, will not produce and interfere, and then form a working cycles, while saving the usage quantity of reversal valve.
Alternatively, the control device set in the import of the second heat exchanger 2 can also a hilted broadsword pair
Throw switch, according to the access demand of the second heat exchanger 2, any circuit of single-pole double-throw switch (SPDT) is connected.
As another alternate embodiments, one can also be respectively set in the both sides of stage compressor 5 and split-compressor 9
Individual two-way reversal valve, each above-mentioned component is sequentially connected with.
When ambient temperature is less than subzero 30 DEG C, cascade type heat pump water heater starts Two-stage Compression：In order to prevent
Hypertonia in three heat exchangers, is usually first to start after 60~90s of two-stage compression circulation line, restarts one stage of compression circulation
Pipeline, now two-stage compression circulation line closing.Stage compressor is changed into the system of HTHP after refrigerant therein is compressed
Refrigerant gas is delivered in the 3rd heat exchanger through the first four-way reversing valve and carries out heat release, and two-stage compression circulation line due to opening in advance
Certain time has been moved, therefore now the refrigerant in pipeline can absorb liberated heat in one stage of compression circulation line, to reduce
Pressure in 3rd heat exchanger；Refrigerant after heat release, which enters, is stored condensed liquid in the first reservoir, Ran Houjing
The gas-liquid mixture that first throttle device is changed into low-temp low-pressure is crossed, First Heat Exchanger is entered back into and is exchanged heat with outside air,
After the heat for absorbing outside air, enter through the first four-way reversing valve gas and liquid are carried out in the first gas-liquid separator again
Separation, eventually passes back to form circulation in stage compressor.
After the stage compressor regular hour is started, the time can be set according to actual demand, start two
Level compressor, split-compressor is changed into HTHP after the refrigerant of the heat absorbed in one stage of compression circulation line is compressed
Refrigerant gas be delivered to through the second four-way reversing valve in storage tank, and then the water in storage tank is heated；After heat release
Refrigerant enter the second reservoir in condensed liquid is stored, be then changed into low-temp low-pressure through second throttling device
Gas-liquid mixture, now the first magnetic valve be disconnect, the second magnetic valve be closure, gas-liquid mixture is through the second magnetic valve
Into in the 3rd heat exchanger, the heat of one stage of compression circulation line is absorbed, and again passes by the second four-way reversing valve and enters second
The separation of gas and liquid is carried out in gas-liquid separator, eventually passes back to form circulation in split-compressor.
When ambient temperature is higher than 20 DEG C, unit only starts split-compressor, only operation two-stage compression circulation line,
This is due to that ambient temperature is higher, using the teaching of the invention it is possible to provide a part of heat is used to heat the water in storage tank, it is only necessary to two grades of pressures
Contracting circulation line provides remaining another part heat, and the demand to heat is smaller.Split-compressor is by refrigerant therein
The refrigerant gas for being changed into HTHP after compression is delivered in storage tank through the second four-way reversing valve, and then in storage tank
Water heated；Refrigerant after heat release, which enters, is stored condensed liquid in the second reservoir, then through second section
Stream device is changed into the gas-liquid mixture of low-temp low-pressure, and now the first magnetic valve is closure, and the second magnetic valve is to disconnect, gas
Liquid mixture enters to be exchanged heat in the second heat exchanger with outside air, after the heat for absorbing outside air, through the 3rd heat exchanger
(now the 3rd heat exchanger is not opened due to one stage of compression circulation line, is only used as the passage that flows through of refrigerant, and without heat
The exchange of amount) and the second four-way reversing valve enter in the second gas-liquid separator the separation for carrying out gas and liquid, eventually pass back to two
Circulation is formed in level compressor.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (8)
1. a kind of cascade type heat pump water heater, it is characterised in that including：
One stage of compression circulation line and two-stage compression circulation line；
3rd heat exchanger (3), is connected between the one stage of compression circulation line and the two-stage compression circulation line, for inciting somebody to action
The heat transfer absorbed from the one stage of compression circulation line gives the two-stage compression circulation line；
Storage tank (4), is arranged in the two-stage compression circulation line, for absorbing the heat in the two-stage compression circulation line
Measure to heat the water of internal reservoir.
2. cascade type heat pump water heater according to claim 1, it is characterised in that the one stage of compression circulation line and institute
State and First Heat Exchanger (1) and the second heat exchanger (2) are respectively arranged with two-stage compression circulation line, the First Heat Exchanger (1)
Worked when different with second heat exchanger (2).
3. cascade type heat pump water heater according to claim 2, it is characterised in that the one stage of compression circulation line includes
The stage compressor (5) that is sequentially connected, the 3rd heat exchanger (3), the first reservoir (6), first throttle device (7), the first heat exchange
Device (1) and the first gas-liquid separator (8)；And/or
The two-stage compression circulation line include be sequentially connected split-compressor (9), storage tank (4), the second reservoir (10),
Second throttling device (11), the second heat exchanger (2), the 3rd heat exchanger (3) and the second vapour liquid separator (12).
4. cascade type heat pump water heater according to claim 3, it is characterised in that in entering for the second heat exchanger (2)
Mouth, which is provided with one, to be used to adjust the control dress that second heat exchanger (2) is switched on or switched off with the two-stage compression circulation line
Put.
5. cascade type heat pump water heater according to claim 4, it is characterised in that the control device is to be arranged in parallel
First switch (13) between the import of second heat exchanger (2) and the import and outlet of second heat exchanger (2) and
Second switch (14).
6. the cascade type heat pump water heater according to any one of claim 3~5, it is characterised in that changed described first
An air-supply arrangement (15) for being used to provide convection current is also respectively provided with the outside of hot device (1) and second heat exchanger (2).
7. the cascade type heat pump water heater according to any one of claim 3~6, it is characterised in that in the one-level pressure
Respectively set between contracting machine (5) and the 3rd heat exchanger (3) and between the split-compressor (9) and the storage tank (4)
There is a reversal valve.
8. cascade type heat pump water heater according to claim 7, it is characterised in that the reversal valve is four-way reversing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710343165.2A CN107044729A (en) | 2017-05-16 | 2017-05-16 | A kind of cascade type heat pump water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710343165.2A CN107044729A (en) | 2017-05-16 | 2017-05-16 | A kind of cascade type heat pump water heater |
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| Publication Number | Publication Date |
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| CN107044729A true CN107044729A (en) | 2017-08-15 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710343165.2A Pending CN107044729A (en) | 2017-05-16 | 2017-05-16 | A kind of cascade type heat pump water heater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072173A (en) * | 2018-01-23 | 2018-05-25 | 浙江正理生能科技有限公司 | A kind of cascade refrigeration defrosting water heater |
| CN112594953A (en) * | 2020-12-29 | 2021-04-02 | 清华大学 | Single-stage, overlapping circulation free conversion heat pump system |
| CN112629054A (en) * | 2020-12-29 | 2021-04-09 | 清华大学 | Multi-connected temperature-changing refrigeration house refrigeration system with single-stage and cascade circulation free conversion |
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| JP2004132647A (en) * | 2002-10-11 | 2004-04-30 | Daikin Ind Ltd | Hot water supply device, air conditioning hot water supply system, and hot water supply system |
| US20090211282A1 (en) * | 2004-07-01 | 2009-08-27 | Daikin Industries, Ltd. | Hot water supply system |
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| CN101975450A (en) * | 2010-11-03 | 2011-02-16 | 上海理工大学 | Air source heat pump water heater |
| CN106016738A (en) * | 2016-07-08 | 2016-10-12 | 广州市唯金空调科技有限公司 | Similar overlapping type system ultra-low temperature type heat pump water heater |
| CN206755581U (en) * | 2017-05-16 | 2017-12-15 | 浙江正理生能科技有限公司 | A kind of cascade type heat pump water heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108072173A (en) * | 2018-01-23 | 2018-05-25 | 浙江正理生能科技有限公司 | A kind of cascade refrigeration defrosting water heater |
| CN108072173B (en) * | 2018-01-23 | 2024-01-30 | 浙江正理生能科技有限公司 | Overlapping type refrigeration defrosting water heater |
| CN112594953A (en) * | 2020-12-29 | 2021-04-02 | 清华大学 | Single-stage, overlapping circulation free conversion heat pump system |
| CN112629054A (en) * | 2020-12-29 | 2021-04-09 | 清华大学 | Multi-connected temperature-changing refrigeration house refrigeration system with single-stage and cascade circulation free conversion |
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