CN206944478U - A kind of cascade type heat pump - Google Patents
A kind of cascade type heat pump Download PDFInfo
- Publication number
- CN206944478U CN206944478U CN201720901909.3U CN201720901909U CN206944478U CN 206944478 U CN206944478 U CN 206944478U CN 201720901909 U CN201720901909 U CN 201720901909U CN 206944478 U CN206944478 U CN 206944478U
- Authority
- CN
- China
- Prior art keywords
- stage
- circulation line
- compression circulation
- heat exchanger
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
It the utility model is related to technical field of heat pumps, and in particular to a kind of cascade type heat pump, including：One stage of compression circulation line and two-stage compression circulation line, the one stage of compression circulation line are provided with First Heat Exchanger (1)；Second heat exchanger (2), internal reservoir has water, it is connected between the one stage of compression circulation line and the two-stage compression circulation line, for the heat transfer that will be absorbed from the one stage of compression circulation line to the two-stage compression circulation line, or the heat in the one stage of compression circulation line is absorbed to heat the water of internal reservoir；Storage tank (3), it 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 utility model provide it is a kind of reduce heat exchanger quantity on the premise of, still be able to ensure two stages of compression heat exchange efficiency, to heat cold water, while realize the maximized cascade type heat pump that resource distribution utilizes.
Description
Technical field
It the utility model is related to technical field of heat pumps, and in particular to a kind of cascade type heat pump.
Background technology
Teat pump boiler, also referred to as air-source water heater, it is 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 feedwater heating is converted by heat exchanger, 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 shortcomings that inconvenient.Due to air
Can water heater work be by media for heat exchange, therefore its do not need electrical heating elements directly contacted with water, 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
Air pollution caused by discharging waste gas.Teat pump boiler generally includes compressor, pipe wing heat exchanger and water-storing tank, due to existing
The Teat pump boiler of technology typically uses single-stage compressor, and the compression of compressor is bigger during cold operation, causes heat-pump hot-water
Device reliability is relatively low.
In order to solve the above-mentioned technical problem, applicant proposed a kind of cascade type heat pump water heater, including：It is provided with first
The one stage of compression circulation line of heat exchanger, the two-stage compression circulation line for being provided with the second heat exchanger, it is connected to one stage of compression and follows
The 3rd heat exchanger between endless tube road and two-stage compression circulation line and the storage tank being arranged in two-stage compression circulation line,
Realize and different compression circulation lines is enabled according to the difference of ambient temperature, on the premise of meeting to heat water, reduce
Unnecessary energy waste.But when only enabling two-stage compression circulation line, due to the heat in compression circulation line not
It is enough to heat the water in storage tank, now needs to start the second heat exchanger, and second heat exchanger is in one stage of compression circulation line
Do not worked when starting with two-stage compression circulation line simultaneously, thus cause the second heat exchanger in two stages of compression and meanwhile when carrying out at
In idle state, it is impossible to realize the maximization that resource distribution utilizes.
Utility model content
Therefore, the technical problems to be solved in the utility model is to overcome cascade type heat pump water heater of the prior art to exist
The defects of one heat exchanger is in idle state two stages of compression is carried out simultaneously when, and resource utilization is relatively low, exist so as to provide one kind
On the premise of the quantity for reducing heat exchanger, it still is able to ensure the heat exchange efficiency of two stages of compression, to heat cold water, while realizes resource
Configure the maximized cascade type heat pump utilized.
In order to solve the above-mentioned technical problem, the utility model provides a kind of cascade type heat pump, including：
One stage of compression circulation line and two-stage compression circulation line, the one stage of compression circulation line are provided with the first heat exchange
Device；
Second heat exchanger, internal reservoir have water, are connected to the one stage of compression circulation line and two-stage compression circulation
Between pipeline, for the heat transfer that will be absorbed from the one stage of compression circulation line to the two-stage compression circulation line,
Or the heat in the one stage of compression circulation line is absorbed to heat the water of internal reservoir；
Storage tank, it 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.
Described cascade type heat pump, in addition to inlet and outlet pipe, the inlet and outlet pipe and second heat exchanger and institute
State storage tank while connect, for being supplied water into second heat exchanger and the storage tank.
Described cascade type heat pump, second heat exchanger include an attemperater and are arranged in the attemperater
Two pipelines, a pipeline connects with the one stage of compression circulation line, another pipeline and the two-stage compression circulation pipe
Road connects.
Described cascade type heat pump, the first water inlet and the first delivery port are respectively arranged with the attemperater, it is described
Be respectively arranged with the second water inlet and the second delivery port on storage tank, first water inlet, the second water inlet respectively with it is described
The inlet pipeline connection of inlet and outlet pipe, the first delivery port and the second delivery port water outlet with the inlet and outlet pipe respectively
Pipeline connection.
Described cascade type heat pump, be respectively arranged with the inlet pipeline and outlet pipeline one be used to controlling it is described enter
Outlet pipeline is connected with the attemperater or the storage tank so that current are protected in the attemperater or the storage tank
Hold the triple valve of flow regime.
Described cascade type heat pump, the pipeline are coil pipe, and two coil pipes are interspersed in the attemperater.
Described cascade type heat pump, stage compressor that the one stage of compression circulation line includes being sequentially connected, second change
Hot device, 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 and the second vapour liquid separator.
Described cascade type heat pump, an air-supply for being used to provide convection current is additionally provided with the outside of the First Heat Exchanger and is filled
Put.
Described cascade type heat pump, between the stage compressor and second heat exchanger and the two-stage compression
A reversal valve is each provided between machine and the storage tank.
Described cascade type heat pump, the reversal valve are four-way reversing valve.
Technical solutions of the utility model, have the following advantages that：
1. cascade type heat pump provided by the utility model, the second heat exchanger internal reservoir has water, in one stage of compression circulation pipe
Road and two-stage compression circulation line work simultaneously when, for the heat transfer that will be absorbed from one stage of compression circulation line to two level
Circulation line is compressed, to heat the water in storage tank；When only one stage of compression circulation line works, the second heat exchanger is directly inhaled
The heat in one stage of compression circulation line is received to heat the water of internal reservoir, i.e., the second heat exchanger now makes as storage tank
With, while First Heat Exchanger is in normal operating conditions to provide required heat, therefore although the utility model reduces one
Individual heat exchanger, but one stage of compression and two stages of compression still can realize the maximization that resource distribution utilizes with normal operation.
2. cascade type heat pump provided by the utility model, in addition to inlet and outlet pipe, inlet and outlet pipe and the second heat exchanger
Connect, can be supplied water at any time into the second heat exchanger and storage tank simultaneously with storage tank, and cause the second heat exchanger according to demand
Flow regime is kept respectively with the water in storage tank, so as to which the water after heating is transferred out into system in time and is used.
3. cascade type heat pump provided by the utility model, the second heat exchanger includes an attemperater and is arranged at insulation water
Two pipelines in case, a pipeline connect with one stage of compression circulation line, and another pipeline connects with two-stage compression circulation line
It is logical；Pipeline is coil pipe, and two coil pipes are interspersed in attemperater, makes full use of the space inside attemperater, increase two
Heat exchange area between bar pipeline, improve heat exchange efficiency.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the operation principle schematic diagram of cascade type heat pump of the present utility model.
Description of reference numerals：
1- First Heat Exchangers；The heat exchangers of 2- second；3- storage tanks；4- inlet and outlet pipes；5- triple valves；6- one stage of compression
Machine；The reservoirs of 7- first；8- first throttle devices；The gas-liquid separators of 9- first；10- split-compressors；The reservoirs of 20- second；
30- second throttling devices；The gas-liquid separators of 40- second；50- air-supply arrangements；The four-way reversing valves of 60- first；The four-ways of 70- second change
To valve；21- attemperaters；22- pipelines；The water inlets of 31- second；The delivery ports of 32- second；41- inlet pipelines；42- outlet pipelines；
The water inlets of 211- first；The delivery ports of 212- first.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Conflict can is not formed to be combined with each other.
A kind of embodiment of cascade type heat pump as shown in Figure 1, including one stage of compression circulation line and two level pressure
Contracting circulation line, the one stage of compression circulation line are provided with First Heat Exchanger 1.Exist per the refrigerant in one stage of compression circulation line
By low-temperature low-pressure refrigerant gas transition it is high-temperature high-pressure refrigerant gas after overcompression is handled, is derived from heat, uses
In with circulation line equipment carry out heat exchange.Second heat exchanger 2, internal reservoir has water, is connected to the one stage of compression
Between circulation line and the two-stage compression circulation line, when one stage of compression circulation line and two-stage compression circulation line while work
When making, for the heat transfer that will be absorbed from the one stage of compression circulation line to the two-stage compression circulation line, or work as
When only one stage of compression circulation line works, the second heat exchanger 2 is used as storage tank, absorbs in the one stage of compression circulation line
Heat is to heat the water of internal reservoir.In the present embodiment, one stage of compression circulation line be Fig. 1 in left part, two level pressure
Contracting circulation line is the right part in Fig. 1, and the second heat exchanger 2 is located at Fig. 1 center, and the second heat exchanger 2 is arranged on whole dress
It is more convenient for the heat absorbed from one stage of compression circulation line passing to two-stage compression circulation line rapidly in the centre put.Water storage
Case 3, it is arranged in the two-stage compression circulation line, it is interior to heat for absorbing the heat in the two-stage compression circulation line
The water of portion's storage, to meet use demand of the people to hot water.The heat that storage tank 3 absorbs includes three parts：One stage of compression follows
The heat obtained after the refrigerant compression of endless tube road, refrigerant exchange the heat absorbed and two-stage compression circulation line refrigerant pressure with the external world
The heat obtained after contracting, accordingly even when in the case where ambient temperature is relatively low, because one stage of compression circulation line has carried in advance
Certain heat is supplied, it is necessary to the power of consumption when two-stage compression circulation line continues the compression of refrigerant on this basis
It is just smaller, therefore for heating the water of same volume, the technical solution of the utility model reduces every one stage of compression circulation
The burden of pipeline, reduces production cost.The heat exchanger 2 of First Heat Exchanger 1 and second can be double media heat exchangers, can also
For three media heat exchangers.When ambient temperature is relatively low, such as winter, the heat exchanger 2 of First Heat Exchanger 1 and second are used as heat exchanger
Use；When ambient temperature is higher, such as season in spring and autumn, First Heat Exchanger 1 use as heat exchanger, and the second heat exchanger 2 is then made
Used for storage tank.It can not only so ensure the water in storage tank can be heated to meet use demand in time, also to the greatest extent may be used
The waste of the energy can be reduced, realizes the maximization that resource distribution utilizes.
Also include inlet and outlet pipe 4, the inlet and outlet pipe 4 connects simultaneously with second heat exchanger 2 and the storage tank 3
It is logical, for being supplied water into second heat exchanger 2 and the storage tank 3.When one stage of compression circulation line and two-stage compression circulate
Pipeline works simultaneously when, first water will be each filled with the second heat exchanger 2 and storage tank 3, be then shut off the water inlet of the second heat exchanger 2
And delivery port, and the water inlet of storage tank 3 and delivery port are then in open mode, conveying in time after the water in storage tank 3 is heated
To user terminal；Water in second heat exchanger 2 then gives the heat transfer absorbed from one stage of compression circulation line to be changed by second
The refrigerant of hot device 2.When only one stage of compression circulation line works, the water inlet and delivery port of storage tank 3 are in closing shape
State, the water inlet and delivery port of the second heat exchanger 2 are then in open mode, and the water in the second heat exchanger 2 is defeated in time after being heated
Deliver to user terminal.
Second heat exchanger 2 includes an attemperater 21 and two pipelines being arranged in the attemperater 21
22, a pipeline connects with the one stage of compression circulation line, and another pipeline connects with the two-stage compression circulation line.
In the present embodiment, the pipeline 22 is Stainless Steel Coil, and two coil pipes are interspersed in the attemperater 21, is changed with increase
Hot area.
Be respectively arranged with the first water inlet 211 and the first delivery port 212 on the attemperater 21, and respectively with two
The opening that pipeline 22 connects；The second water inlet 31 and the second delivery port 32 are respectively arranged with the storage tank 3.Described first enters
The mouth of a river 211, the second water inlet 31 connect with the inlet pipeline 41 of the inlet and outlet pipe respectively, the He of the first delivery port 212
Second delivery port 32 connects with the outlet pipeline 42 of the inlet and outlet pipe respectively, and current are distinguished by different inlet pipelines 41
Into in attemperater 21 and storage tank 3.
One is respectively arranged with the inlet pipeline 41 and outlet pipeline 42 to be used to control the inlet and outlet pipe and institute
State attemperater 21 or the storage tank 3 connects so that current keep flowing in the attemperater 21 or the storage tank 3
The triple valve 5 of state.Triple valve 5 is powered, and inlet and outlet pipe connects with attemperater 21；Triple valve 5 powers off, inlet and outlet pipe with
Storage tank 3 connects.
In the present embodiment, the one stage of compression circulation line includes stage compressor 6, the second heat exchanger being sequentially connected
2nd, the first reservoir 7, first throttle device 8, the gas-liquid separator 9 of First Heat Exchanger 1 and first；With the two-stage compression circulation pipe
Road includes split-compressor 10, storage tank 3, the second reservoir 20, second throttling device 30, the second heat exchanger 2 being sequentially connected
With the second vapour liquid separator 40.Stage compressor 6 and split-compressor 10 are used for the refrigerant in circulation line by low-temp low-pressure
Gas transition is high temperature and high pressure gas；First reservoir 7 and the second reservoir 20 are used for refrigerant and the second heat exchanger 2 or water storage
The liquid that case 3 condenses after the heat exchange is stored；First throttle device 8 and second throttling device 30 are used for the gas in refrigerant
Body be cooled into the gas-liquid mixture of low-temp low-pressure；First Heat Exchanger 1 is used for the gas of the low-temp low-pressure in circulation line
Liquid mixture carries out heat exchange with outside air, to absorb the heat in outside air, becomes gas after evaporation；First gas-liquid
The gas-liquid separator 40 of separator 9 and second is used to be respectively fed to one-level after a small amount of liquid in the gas after evaporation is separated
Compressor and split-compressor are compressed, so as to complete a circulation.
An air-supply arrangement 50 for being used to provide convection current is additionally provided with the outside of the First Heat Exchanger 1.In the present embodiment
In, air-supply arrangement 50 is blower fan, and installed in the side of First Heat Exchanger 1, outside air is sent into First Heat Exchanger 1 in time
In, accelerate the exchange of heat.
Between the stage compressor 6 and second heat exchanger 2 and the split-compressor 10 and the water storage
A reversal valve is each provided between case 3.In the present embodiment, the reversal valve is four-way reversing valve, and respectively the first four-way changes
To the four-way reversing valve 70 of valve 60 and second.When refrigerant exports from stage compressor 6 and split-compressor 10, respectively by
The under shed and upper shed of one four-way reversing valve 60 and the second four-way reversing valve 70；When refrigerant changes from First Heat Exchanger 1 and second
When being exported in hot device 2, then respectively by left opening and the right opening of the first four-way reversing valve 60 and the second four-way reversing valve 70, then
The separation of gas and liquid is carried out into the first gas-liquid separator 9 and the second gas-liquid separator 40, so ensures that refrigerant exists
The independence of different phase in cyclic process, will not produce and interfere, and then form a working cycles, while saves and change
To the usage quantity of valve.
Alternatively, one can also respectively be set in the both sides of stage compressor 6 and split-compressor 10
Individual two-way reversal valve, above-mentioned each component is sequentially connected with.
When ambient temperature is less than 10 DEG C, cascade type heat pump starts Two-stage Compression：In order to prevent in the second heat exchanger
Hypertonia, after usually first starting two-stage compression circulation line 60~90s, restart one stage of compression circulation line, now
Two-stage compression circulation line is closed.Stage compressor is changed into HTHP refrigerant gas after refrigerant therein is compressed passes through
First four-way reversing valve, which is delivered in the second heat exchanger, carries out heat release, and the water in the second heat exchanger absorbs heat, and two-stage compression follows
Endless tube is route in having pre-actuated certain time, therefore now the refrigerant in pipeline can absorb the heat of the second heat exchanger reclaimed water
Amount, to reduce the pressure in the second heat exchanger；Refrigerant after heat release, which enters in the first reservoir, is stored up condensed liquid
Deposit, be then changed into the gas-liquid mixture of low-temp low-pressure by first throttle device, enter back into First Heat Exchanger and outside air
Exchanged heat, after the heat for absorbing outside air, enter through the first four-way reversing valve in the first gas-liquid separator enter promoting the circulation of qi again
The separation of body and liquid, eventually pass back to form circulation in stage compressor.
After the stage compressor regular hour is started, the time can be set according to the demand of reality, start two
Level compressor, split-compressor are 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, gas-liquid mixture enters in the second heat exchanger, absorbs the heat of one stage of compression circulation line, and again pass by
Second four-way reversing valve enters in the second gas-liquid separator the separation for carrying out gas and liquid, eventually passes back to shape in split-compressor
Into circulation.
When ambient temperature is higher than 10 DEG C, unit only starts stage compressor, only runs one stage of 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 the second heat exchanger, it is only necessary to one
Level compression circulation line provides remaining another part heat, smaller to the demand of heat.Stage compressor will be therein
The refrigerant gas for being changed into HTHP after refrigerant compression is delivered in the second heat exchanger through the first four-way reversing valve, and then right
Water in the attemperater of second heat exchanger is heated；Refrigerant after heat release enters condensed liquid in the first reservoir
Stored, be then changed into the gas-liquid mixture of low-temp low-pressure through first throttle device, gas-liquid mixture enters the first heat exchange
Exchanged heat in device with outside air, after the heat for absorbing outside air, enter the first gas-liquid separation through the first four-way reversing valve
The separation of gas and liquid is carried out in device, eventually passes back to form circulation in stage compressor.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the 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 the protection domain that variation is created still in the utility model.
Claims (10)
- A kind of 1. cascade type heat pump, it is characterised in that including：One stage of compression circulation line and two-stage compression circulation line, the one stage of compression circulation line are provided with First Heat Exchanger (1)；Second heat exchanger (2), internal reservoir has water, is connected to the one stage of compression circulation line and the two-stage compression circulation pipe Between road, for the heat transfer that will be absorbed from the one stage of compression circulation line to the two-stage compression circulation line, or The heat in the one stage of compression circulation line is absorbed to heat the water of internal reservoir；Storage tank (3), it 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 according to claim 1, it is characterised in that also including inlet and outlet pipe (4), the Inlet and outlet water Pipeline (4) connects simultaneously with second heat exchanger (2) and the storage tank (3), for second heat exchanger (2) and institute State in storage tank (3) and supply water.
- 3. cascade type heat pump according to claim 2, it is characterised in that second heat exchanger (2) includes an insulation Water tank (21) and two pipelines (22) being arranged in the attemperater (21), a pipeline and the one stage of compression circulation pipe Road connects, and another pipeline connects with the two-stage compression circulation line.
- 4. cascade type heat pump according to claim 3, it is characterised in that is respectively arranged with the attemperater (21) One water inlet (211) and the first delivery port (212), the second water inlet (31) and second are respectively arranged with the storage tank (3) Delivery port (32), first water inlet (211), the second water inlet (31) water inlet pipe with the inlet and outlet pipe (4) respectively Road (41) connects, first delivery port (212) and the second delivery port (32) outlet pipe with the inlet and outlet pipe (4) respectively Road (42) connects.
- 5. cascade type heat pump according to claim 4, it is characterised in that in the inlet pipeline (41) and outlet pipeline (42) one is respectively arranged with to be used to control the inlet and outlet pipe (4) and the attemperater (21) or the storage tank (3) Connection so that current keep the triple valve (5) of flow regime in the attemperater (21) or the storage tank (3).
- 6. cascade type heat pump according to claim 3, it is characterised in that the pipeline (22) is coil pipe, and two coil pipes exist It is interspersed in the attemperater (21).
- 7. cascade type heat pump according to claim 1, it is characterised in that the one stage of compression circulation line includes connecting successively The stage compressor (6) that connects, the second heat exchanger (2), the first reservoir (7), first throttle device (8), First Heat Exchanger (1) and First gas-liquid separator (9)；And/orThe two-stage compression circulation line includes split-compressor (10), storage tank (3), the second reservoir being sequentially connected (20), second throttling device (30), the second heat exchanger (2) and the second vapour liquid separator (40).
- 8. cascade type heat pump according to claim 1, it is characterised in that also set in the outside of the First Heat Exchanger (1) It is equipped with an air-supply arrangement (50) for being used to provide convection current.
- 9. cascade type heat pump according to claim 7, it is characterised in that in the stage compressor (6) and described second A reversal valve is each provided between heat exchanger (2) and between the split-compressor (10) and the storage tank (3).
- 10. cascade type heat pump according to claim 9, it is characterised in that the reversal valve is four-way reversing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720901909.3U CN206944478U (en) | 2017-07-24 | 2017-07-24 | A kind of cascade type heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720901909.3U CN206944478U (en) | 2017-07-24 | 2017-07-24 | A kind of cascade type heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206944478U true CN206944478U (en) | 2018-01-30 |
Family
ID=61371414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720901909.3U Active CN206944478U (en) | 2017-07-24 | 2017-07-24 | A kind of cascade type heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206944478U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270536A (en) * | 2017-07-24 | 2017-10-20 | 浙江正理生能科技有限公司 | A kind of cascade type heat pump |
-
2017
- 2017-07-24 CN CN201720901909.3U patent/CN206944478U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270536A (en) * | 2017-07-24 | 2017-10-20 | 浙江正理生能科技有限公司 | A kind of cascade type heat pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201476406U (en) | Low-temperature quasi-two-stage air source heat pump unit | |
| CN106016771A (en) | Solar air source heat pump triple co-generation system and control method thereof | |
| CN202002391U (en) | Water heater unit with spray liquid enthalpy-increasing heat pump | |
| CN101949585A (en) | Dual-heat source jet enthalpy addition heat pump water heater | |
| CN101358783A (en) | Heat pump sets for bidirectional air supply by flash evaporator | |
| CN205897575U (en) | Solar energy air source heat pump trigeminy supplies system | |
| CN107014075A (en) | Unit dual temperature area Teat pump boiler | |
| CN201206869Y (en) | Solar heat pump hot water split machine | |
| CN201757505U (en) | Air source heat pump water heater adopting EVI | |
| CN206755581U (en) | A kind of cascade type heat pump water heater | |
| CN102734981B (en) | Air-source modular three-in-one air-conditioning hot water system | |
| CN107270536A (en) | A kind of cascade type heat pump | |
| CN206944478U (en) | A kind of cascade type heat pump | |
| CN207751180U (en) | A kind of cascade refrigeration defrosting water heater | |
| CN203010922U (en) | Single-stage-compressing double-stage-heating high-temperature heat pump water heater | |
| CN107883576A (en) | Cooling in summer recuperation of heat heat supply in winter heat pump hot-water system | |
| CN105571151B (en) | A kind of solar magnetic suspension central air-conditioning heating system | |
| CN207751178U (en) | Cooling in summer recuperation of heat heat supply in winter heat pump hot-water system | |
| CN203848548U (en) | Multipurpose air source heat pump unit | |
| CN207317154U (en) | Multifunctional fuel air conditioner system | |
| CN107166476B (en) | A kind of heating system of high-pressure water tank combined absorption type heat pump | |
| CN201917067U (en) | Double-condenser heat pump water heater | |
| CN202303881U (en) | Air source heat pump water heater adopting enhanced vapor injection | |
| CN109708334A (en) | Based on hairdressing place's source of sewage and air source heat pump trilogy supply composite system | |
| CN202083150U (en) | Secondary air injection device of efficient ultralow-temperature heat pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |