CN208720513U - One kind can single twin-stage switching cascade type heat pump heating unit - Google Patents
One kind can single twin-stage switching cascade type heat pump heating unit Download PDFInfo
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- CN208720513U CN208720513U CN201821131725.4U CN201821131725U CN208720513U CN 208720513 U CN208720513 U CN 208720513U CN 201821131725 U CN201821131725 U CN 201821131725U CN 208720513 U CN208720513 U CN 208720513U
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Abstract
The utility model provides one kind can single twin-stage switching cascade type heat pump heating unit, it is characterised in that cryogenic system is equipped with independent cryogenic heat exchanger, the medium pipeline of cryogenic system and the low-temperature heat exchange pipeline connection of Intermediate Heat Exchanger；High-temperature systems are equipped with independent high-temperature heat-exchanging, the medium pipeline of high-temperature systems and the high-temperature heat exchange tube road connection of Intermediate Heat Exchanger；Two heat exchanging pipes are included at least on finned heat exchanger；The media outlet of high-temperature heat-exchanging divides two-way after connecing throttling set, connects the first solenoid valve all the way and is followed by Intermediate Heat Exchanger；Another way is connected after connecing second solenoid valve with a heat exchanging pipe of finned heat exchanger.Higher using single level system independent operating acquisition heating energy efficiency ratio under hot environment, the service life is longer, and applicability is higher.The case where being defrosted under low temperature environment using the commutation of high temperature side system four-way valve, overcoming traditional overlapping air source heat pump low temperature side four-way valve commutation defrosting Times high pressure, guarantees that system operates normally.
Description
Technical field
The utility model relates to heating plant field, can single twin-stage switching cascade type heat pump heating more specifically to one kind
Unit.
Background technique
Air Resource Heat Pump Unit is made of devices such as compressor, heat exchanger, flow controller, heat dump, compressors
A circulatory system.Refrigerant is under the action of compressor in system internal circulation flow.It completes gaseous liter in compressor
It presses temperature-rise period (temperature is up to 100 DEG C), it is exchanged after entering heat exchanger with wind progress heat, is cooled and is converted into flow liquid
State, after it runs to heat dump, liquid evaporation of absorbing heat rapidly is again converted to gaseous state, at the same temperature drop to subzero 20 DEG C-
30 DEG C, at this moment low-temperature heat quantity continuously will be passed to refrigerant by the air on heat dump periphery.Refrigerant constantly recycles just
Realize the process that the low-temperature heat quantity in air is changed into high temperature heat and heats cold water process or the hot water that cools down.Air-source heat
Pump hot water machine group is a kind of heating reservoir equipment that can substitute boiler, and with easy for installation, energy consumption is few, and environmental pollution is small
The advantages that be increasingly becoming the heating reservoir equipment of mainstream.
Although common cascade type heat pump meets the demand of low-temperature heating and high-temperature-hot-water well, common is answered
Stacked heat pump is under the high environment that environment temperature is in 0 DEG C~40 DEG C when heating, and heating efficiency is not generally high, system compresses ratio
Bigger than normal, delivery temperature is high, and lubricating oil viscosity is relatively low, and service life is short；And common cascade type heat pump is commutated using four-way valve
When defrosting, low-pressure side is offered a high price pressure when being easy to appear the defrosting of high water temperature；To affect unit safety efficient operation.And single-stage heat pump
System has the advantages that high circumstance temperature heating heating efficiency height and defrosting efficiency are good, to set therefore need to count a energy free switching list twin-stage
The heat pump system of cascade type heat pump operation is able to satisfy the demand of annual heating.
Utility model content
Technical problem to be solved in the utility model is that how to solve common cascade type heat pump efficiency under high circumstance temperature inclined
Low, two system loading of unit is uneven, and system compresses are than bigger than normal, and delivery temperature is high, and lubricating oil viscosity is relatively low, system defrosting Times
The problems such as high pressure, the service life of system is shorter.
In order to solve problem above the utility model provide one kind can single twin-stage switching cascade type heat pump heating unit,
It is characterized in that including cryogenic system and high-temperature systems, cryogenic system is equipped with independent cryogenic heat exchanger, the medium of cryogenic system
The low-temperature heat exchange pipeline connection of pipeline and Intermediate Heat Exchanger；High-temperature systems are equipped with independent high-temperature heat-exchanging, high-temperature systems
The high-temperature heat exchange tube road connection of medium pipeline and Intermediate Heat Exchanger；It further include finned heat exchanger, on the finned heat exchanger at least
Including two heat exchanging pipes；The media outlet of high-temperature heat-exchanging divides two-way after connecing throttling set, connects the first solenoid valve all the way and is followed by
Intermediate Heat Exchanger；Another way is connected after connecing second solenoid valve with a heat exchanging pipe of finned heat exchanger.
It is described can single twin-stage switching cascade type heat pump heat unit, it is characterised in that the finned heat exchanger includes 5 tunnels
Heat exchanging pipe, respectively pipeline one, pipeline two, pipeline three, pipeline four and pipeline five, 5 road heat exchanging pipes are staggered, pipeline two
It is connect on the medium pipeline of high-temperature systems together with four parallel connection of pipeline；Pipeline one, pipeline three and five parallel connection of pipeline are connect together low
On the medium pipeline of warm system.
It is described can single twin-stage switching cascade type heat pump heat unit, it is characterised in that economy is additionally provided on cryogenic system
Device, low-temperature heat exchange pipeline divide two-way to be directly connected all the way with economizer after main road throttling set, and another way connects bypass section
It is connected after stream device with economizer.
Implement the utility model has the following beneficial effects: being transported using superposition type+air injection enthalpy-increasing+mono- twin-stage autonomous system
Row environmental field is wider, and heating capacity and heating energy efficiency ratio are higher, and heating water temperature is higher, can be used for traditional high temperature heating heat
The substitution (radiator heating) in source, it is wider can only to substitute the low-temperature heat source scope of application relative to traditional technology；It is made under hot environment
Hot systems stability is higher, and higher using single level system independent operating acquisition heating energy efficiency ratio, the service life is longer, and applicability is more
It is high.Defrosting performance under low temperature environment is more preferable, more stable, which uses high temperature
The commutation defrosting of side system four-way valve overcomes the feelings of traditional overlapping air source heat pump low temperature side four-way valve commutation defrosting Times high pressure
Condition guarantees that system operates normally.
Detailed description of the invention
Fig. 1 is can single twin-stage switching cascade type heat pump heating machine set system block diagram.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1 be can single twin-stage switching cascade type heat pump heating machine set system block diagram, system includes cryogenic system 1 and high temperature system
2 composition of system, wherein cryogenic system 1 includes finned heat exchanger 10, gas-liquid separator 5, cryogenic compressor 3, low temperature four-way valve 4, master
Road throttling set 9, bypass throttling set 8, economizer 7, Intermediate Heat Exchanger 15 and cryogenic heat exchanger 6；High-temperature systems 2 include high temperature
Compressor 11, throttling set 17, gas-liquid separator 14, high-temperature four-way valve 12, high-temperature heat-exchanging 13, Intermediate Heat Exchanger 15, fin
Heat exchanger 10, the first solenoid valve 16 and throttling set 17.Two internal systems and between be additionally provided with necessary connecting copper pipe and its be
Low-temperature refrigerant and high temperature refrigerant pressure inside system.
Its working principle is that:
1, low circumstance temperature heating operation mode: when heating operation, high-temperature systems and cryogenic system start simultaneously.Pass through high temperature side
The work of system provides high-temperature-hot-water for heating system.
High-temperature systems work is as follows: high temperature compressor 11 will be compressed into after the high temperature refrigerant sucking of gaseous state low-temp low-pressure
The high temperature refrigerant gas of high temperature and pressure carries out heat release by entering in high-temperature heat-exchanging 13 after high-temperature four-way valve 12, is condensed into height
The temperature refrigerant liquid of pressure carries out reducing pressure by regulating flow by throttling set 17, becomes the high temperature refrigerant gas-liquid mixed of low-temp low-pressure
It is evaporated heat absorption into Intermediate Heat Exchanger 15 by the first solenoid valve 16 after object, becomes the gaseous state high temperature refrigerant of low-temp low-pressure
Enter gas-liquid separator 14 after high-temperature four-way valve 12, is then return in high temperature high temperature compressor 11 and continues this work and follow
Ring.Entire high-temperature systems constantly provide the heating hot water of high temperature to heating system.However the heat source of entire high-temperature systems all by
The low temperature part of folding type cooling system provides.
The course of work of cryogenic system is as follows: after cryogenic compressor 3 sucks the low-temperature refrigerant of gaseous state low-temp low-pressure
The low temperature refrigerant gas for being compressed into high temperature and pressure enters in Intermediate Heat Exchanger 15 by cryogenic heat exchanger 6 carries out heat release to high temperature
System provides heat source, and the low temperature refrigerant gas of high temperature and pressure is condensed into the low of high pressure by being cooled to after Intermediate Heat Exchanger 15
Warm refrigerant liquid and then throttling set 9 are condensed into the temperature refrigerant liquid of high pressure by being divided into two, and reducing pressure by regulating flow is at low temperature
Then the low temperature gas-liquid mixed refrigerant of low pressure is evaporated heat absorption by low temperature part finned heat exchanger 10, be entire overlapping
The operation that formula system provides provides final origin of heat, becomes the gaseous state low-temperature refrigerant of low-temp low-pressure by low temperature part gas
Liquid/gas separator 16 is then return in cryogenic compressor 17 and continues this working cycles, and the refrigerant of another way bypass passes through economy
Heat absorption evaporation is carried out by economizer 7 after 8 reducing pressure by regulating flow of device bypass throttle valve, becomes gaseous refrigerant and enters low temperature compression
Compressor is returned in the air injection enthalpy-increasing mouth of machine 3 continues entire working cycles.
The operation of entire superposition type system be unable to do without the cooperating operation of high-temperature part and low temperature part.It is inhaled by low temperature part
It receives the heat of external environment while passing through high-temperature part system section does not transfer heat to heating hot water, constantly give heating heat
Water heating.
2, Gao Huanwen heating mode:
When heating operation, high-temperature systems 2 and cryogenic system 1 independently start, and electromagnetism two-port valve 18 is opened, electromagnetism two-way
Valve 16 is closed, its working principles are as follows:
High-temperature systems: the refrigerant gas that high temperature and pressure is discharged in high temperature compressor 11 passes through high-temperature four-way valve 12, into height
Warm heat exchanger 13 becomes the refrigerant liquid of cryogenic high pressure after being condensed, the cryogenic high pressure refrigeration flowed out from high-temperature heat-exchanging 13
By second solenoid valve 18 after reducing pressure by regulating flow in agent liquid flow throttling device 17, into the pipeline two and pipeline of finned heat exchanger
Four evaporations complete the low-temperature low-pressure refrigerant gas after evaporating and successively pass through high-temperature four-way valve 12, into the second gas-liquid separation
Device 14, then flowed out from the second gas-liquid separator 14, high temperature compressor 11 is returned to from the gas returning port of high temperature compressor 11, completes height
The circulation of warm side system heating.
Cryogenic system: the refrigerant gas that high temperature and pressure is discharged in cryogenic compressor 3 passes through low temperature four-way valve 4, into low temperature
Heat exchanger 6 becomes the refrigerant liquid of cryogenic high pressure after being condensed, the cryogenic high pressure refrigerant liquid flowed out from cryogenic heat exchanger 6
Body after reducing pressure by regulating flow in 15 flow throttling device 9 of Intermediate Heat Exchanger by economizer, into finned heat exchanger pipeline one,
Pipeline three and pipeline five evaporate, and complete the low-temperature low-pressure refrigerant gas after evaporation and successively pass through low temperature four-way valve 4, into the
Two gas-liquid separators 5, then flowed out from the second gas-liquid separator 5, cryogenic compressor 3 is returned to from the gas returning port of cryogenic compressor 3, it is complete
The circulation heated at low temperature side system.This low temperature side system is only run under lower water temperature under epipodium, and water temperature is more than certain value
When be automatically closed, high temperature side system is run always.
Two systems are all independent operatings during whole service, are not interfere with each other；The heat transfer of absorption external environment is adopted
Warm heat water is constantly heated to heating hot water.
3, Defrost operation mode:
Heat pump system is run at low ambient temperatures inevitably can be there is a phenomenon where frosting, and the quality of heat pump unit defrost is directly certainly
Determine the heating efficiency of whole system, especially superposition type system, the defrost of cryogenic system directly influences the fortune of high-temperature systems
Row state, when the defrost of the novel superposition type super low temperature heat pump heating unit is run, low temperature side system 1 is closed, high temperature side-line
System 2 is opened, and electromagnetism two-port valve 18 is opened, and electromagnetism two-port valve 16 is closed, and the working principle that specifically defrosts is as follows:
High-temperature systems: the refrigerant gas that high temperature and pressure is discharged in high temperature compressor 11 passes through high-temperature four-way valve 12, into changing
The pipeline two and pipeline four of hot device 10 become the refrigerant liquid of cryogenic high pressure after being condensed, the low temperature flowed out from heat exchanger 10
High pressure refrigerant liquid is after reducing pressure by regulating flow in 18 flow throttling device 17 of second solenoid valve, into steaming in high-temperature heat-exchanging 13
Hair completes the low-temperature low-pressure refrigerant gas after evaporation and successively passes through high-temperature four-way valve 12, into the second gas-liquid separator 14,
It is flowed out again from the second gas-liquid separator 14, returns to high temperature compressor 11 from the gas returning port of high temperature compressor 11, complete defrosting fluorine
The circulation on road.
From the foregoing it can be that when the unit defrosts, it is only necessary to start high temperature side system 2 and carries out commutation defrosting, it is high at this time
Warm heat exchanger 13 is evaporator, and heat exchanger 1 is condenser, and unit has only used the pipeline two of heat exchanger 1 and pipeline four to use when defrosting
It radiates, therefore not will increase the flow resistance of water or refrigerant, to improve unit defrosting/heating efficiency；And it defrosts
Shi Buxu passes through Intermediate Heat Exchanger 15, and just there is no because two systems are caused heat to provide not when opening by Water Temperature
Foot excessively influences unit safety efficient operation, so the defrosting formal system steady operation, does not interfere with high-temperature systems
Normal operation.
Above disclosed is only a kind of the utility model embodiment, cannot limit the utility model certainly with this
Interest field, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and according to this reality
The equivalent variations made by novel claim, still falls within the scope of the utility model.
Claims (3)
1. one kind can single twin-stage switching cascade type heat pump heat unit, it is characterised in that it is low including cryogenic system and high-temperature systems
Warm system is equipped with independent cryogenic heat exchanger, and the medium pipeline of cryogenic system and the low-temperature heat exchange pipeline of Intermediate Heat Exchanger join
It is logical；High-temperature systems are equipped with independent high-temperature heat-exchanging, the medium pipeline of high-temperature systems and the high-temperature heat exchange tube of Intermediate Heat Exchanger
Road connection；Further include finned heat exchanger, two heat exchanging pipes are included at least on the finned heat exchanger；The medium of high-temperature heat-exchanging
Outlet divides two-way after connecing throttling set, connects the first solenoid valve all the way and is followed by Intermediate Heat Exchanger；Another way connect after second solenoid valve with
One heat exchanging pipe of finned heat exchanger is connected.
2. it is according to claim 1 can single twin-stage switching cascade type heat pump heat unit, it is characterised in that the fin changes
Hot device includes 5 road heat exchanging pipes, and respectively pipeline one, pipeline two, pipeline three, pipeline four and pipeline five, 5 road heat exchanging pipes interlock
Setting, pipeline two and four parallel connection of pipeline are connect together on the medium pipeline of high-temperature systems；Pipeline one, pipeline three and pipeline five are in parallel
It is connect on the medium pipeline of cryogenic system together.
3. it is according to claim 1 can single twin-stage switching cascade type heat pump heat unit, it is characterised in that on cryogenic system
It is additionally provided with economizer, low-temperature heat exchange pipeline divides two-way to be directly connected all the way with economizer after main road throttling set, another
Road is connected after connecing bypass throttling set with economizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821131725.4U CN208720513U (en) | 2018-07-17 | 2018-07-17 | One kind can single twin-stage switching cascade type heat pump heating unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821131725.4U CN208720513U (en) | 2018-07-17 | 2018-07-17 | One kind can single twin-stage switching cascade type heat pump heating unit |
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| CN201821131725.4U Active CN208720513U (en) | 2018-07-17 | 2018-07-17 | One kind can single twin-stage switching cascade type heat pump heating unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220322A (en) * | 2019-06-06 | 2019-09-10 | 无锡溥汇机械科技有限公司 | Energy saving ultralow temperature precision temperature control heat-exchange system |
| CN110410760A (en) * | 2019-06-24 | 2019-11-05 | 浙江大学 | A kind of cascade high-temperature heat pump steam generator |
| CN112594954A (en) * | 2021-01-18 | 2021-04-02 | 北京天意能科技有限公司 | Full-working-condition double-cold-storage warm air conditioning system |
-
2018
- 2018-07-17 CN CN201821131725.4U patent/CN208720513U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220322A (en) * | 2019-06-06 | 2019-09-10 | 无锡溥汇机械科技有限公司 | Energy saving ultralow temperature precision temperature control heat-exchange system |
| CN110220322B (en) * | 2019-06-06 | 2021-06-08 | 无锡溥汇机械科技有限公司 | Ultra-low temperature precise temperature control heat exchange system |
| CN110410760A (en) * | 2019-06-24 | 2019-11-05 | 浙江大学 | A kind of cascade high-temperature heat pump steam generator |
| CN112594954A (en) * | 2021-01-18 | 2021-04-02 | 北京天意能科技有限公司 | Full-working-condition double-cold-storage warm air conditioning system |
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