CN209042832U - A kind of air energy heat pump defrosting system using recuperation of heat - Google Patents
A kind of air energy heat pump defrosting system using recuperation of heat Download PDFInfo
- Publication number
- CN209042832U CN209042832U CN201821475457.8U CN201821475457U CN209042832U CN 209042832 U CN209042832 U CN 209042832U CN 201821475457 U CN201821475457 U CN 201821475457U CN 209042832 U CN209042832 U CN 209042832U
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- CN
- China
- Prior art keywords
- compressor
- gas
- defrost
- defrosting
- energy
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- 238000010257 thawing Methods 0.000 title claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 238000005338 heat storage Methods 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 abstract description 16
- 238000005265 energy consumption Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 30
- 238000004146 energy storage Methods 0.000 description 11
- 230000008901 benefit Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 239000012782 phase change material Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000011232 storage material Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model provides a kind of air energy heat pump defrosting system using recuperation of heat, it includes heating heating recycle system and the hot gas defrosting circulatory system, the hot gas defrosting circulatory system includes compressor, the evaporator fin being connected to the compressor outlet by the second normally open solenoid valve, the Latent Heat Storage Exchanger being connected to the evaporator fin by defrost capillary, the gas-liquid separator being connected to the Latent Heat Storage Exchanger by the second normally closed solenoid valve, the gas-liquid separator gas outlet is connected to compressor inlet, the utility model uses recuperation of heat phase-change accumulation energy means, it is short with the defrost time, low energy consumption, the good feature of defrosting effect.
Description
Technical field
The utility model is specifically related to a kind of air energy heat pump defrosting system using recuperation of heat, belongs to Heating,Ventilating and Air Conditioning technology
Field.
Background technique
Main force of the air energy thermal pump assembly as northern area heating, in engineering practice heating under cold climate conditions
Operation, evaporimeter frosting greatly reduces heating capacity, reduces heat pump efficiency, will affect unit when serious in winter just
Often operation.Therefore defrost problem is always the difficult point and emphasis of the area research.The defrost mode master more generally used at present
There are reverse cycle defrosting method, hot gas defrosting method, electric heating defrost and energy storage defrosting etc..But these Defrost methods respectively have excellent lack
Point.Heat pump industry is reverse cycle defrosting method using most Defrost modes --- the function of being commutated by four-way valve module executes system
Cold mode is realized.Most defrost energy are absorbed from user's hot water, its advantage is that defrost speed is fast, defrost is clean, but
It is the disadvantage is that having cooling effect to hot water, the bad problem of user experiences such as heating terminal meeting cool wind blowing function reduces the energy of heat pump
Effect.Four-way valve module also has the problems such as commutation failure, leakage influence defrost, possibly even cause compressor simultaneously " liquid hammer " it asks
Topic.Hot-gas bypass defrost is exactly that compressor air-discharging is directly switch to defrost in evaporator, and advantage is that four-way valve does not commutate, and is not required to
Heat is taken from user terminal.Its defrost energy is mainly derived from the electric energy of compressor power consumption.The heat is limited.Frosting is more serious
When, defrost difficulty is larger, and the defrost time is longer, and compressor return air temperature is low, and compressor " liquid hammer " increased risk increases defrost
Energy consumption and time.Its biggest advantage is that the problems such as not commutated by four-way valve, avoiding leakage, the failure of four-way valve, relatively
Also simple.It is generally only used for small-sized heat pump system, is not suitable for large commercial air energy thermal pump assembly.
Traditional energy storage defrosting is to realize defrost, defrost process essence or inverse circulation in conjunction with by four-way valve commutation
Defrosting refrigeration defrosting process, and it is excessively complicated, defrost energy is only avoided from user's hot water end and takes heat, to heating terminal temperature
It is small to spend influence of fluctuations, but defrosting process process makes Mechatronic Systems control commutation increasingly complex, not only instead there is no simplifying
More set Electromechanical Control elements are increased, and there is no improve for the problems in four-way valve commutation process.Therefore above several main
Defrost scheme respectively have advantage and disadvantage.Learn from other's strong points to offset one's weaknesses --- i.e. defrost energy is not influence user experience, simultaneously using energy storage heat source
Also to simplify defrosting process process, overcome the complicated defrost technical process using four-way valve in commutation process.In consideration of it, of the invention
A kind of air energy heat pump phase-change accumulation energy hot gas defrosting technique of involved simplification is to reach simplify, is energy saving, is safe and reliable
Advantage.
Utility model content
The purpose of the utility model is to overcome the defects of the prior art, provide a kind of using recuperation of heat phase-change accumulation energy hand
Section, the defrost time is short, and low energy consumption, the good air energy heat pump defrosting system using recuperation of heat of defrosting effect.
To achieve the goals above, the technical solution that the utility model is taken is as follows:
A kind of air energy heat pump defrosting system using recuperation of heat comprising heating heating recycle system and hot gas defrosting
The circulatory system, the heating heating recycle system include that compressor, air inlet and the compressor outlet are normally opened by first
The condenser, successively that Latent Heat Storage Exchanger, the air inlet of solenoid valve connection are connected to the Latent Heat Storage Exchanger gas outlet
The evaporator fin that is connected to by fluid reservoir, filter, expansion valve with the condenser and pass through with the evaporator fin
The gas-liquid separator of first normally closed solenoid valve connection, the gas-liquid separator gas outlet is connected to compressor inlet；
The hot gas defrosting circulatory system includes that compressor and the compressor outlet pass through the second normally open solenoid valve and connect
The logical evaporator fin, the Latent Heat Storage Exchanger being connected to by defrost capillary with the evaporator fin, with it is described
Latent Heat Storage Exchanger passes through the gas-liquid separator that the second normally closed solenoid valve is connected to, the gas-liquid separator gas outlet and compressor
Air inlet connection.
Compared with prior art, it is had the beneficial effect that acquired by the utility model:
The utility model utilizes the heat of recuperation of heat, using phase-change accumulation energy means, the item that does not commutate by four-way valve component
Phase-change accumulation energy and hot gas defrost are combined under part, simplify defrost process, strengthens defrosting effect, save defrost time and economized
White energy consumption improves the safe operation of compressor worst cold case, overcomes four-way valve commutation etc. during phase-change accumulation energy defrost completely
The disadvantages of Complicated Flow, while also overcoming in hot gas defrost mode that defrost heat source is single, the time is long, and energy consumption is high, and compressor is easy
The disadvantages of " liquid hammer " occurs, inherits the advantage of simple process flow in heating power defrost, this simplification after optimization design
Air energy phase-change accumulation energy heating power defrosting process method, the defrost time is short, and low energy consumption, enhances defrosting effect, optimizes compressor
Suck and exhaust pressure, improve condensation temperature and delivery temperature, effectively protect compressor safe operation, improve defrost
The temperature difference of journey avoids the phenomenons of blowing a cold wind over such as defrost process heating water temperature fluctuation, improves the temperature of evaporator surface condensed water,
The discharge of advantageous water, effectively improves compressor assembly operating condition.
Detailed description of the invention
It is attached that FIG. 1 is a schematic structural view of the utility model；
Wherein, 1, compressor, 2, expansion valve, 3, filter, 4, gas-liquid separator, 5, fluid reservoir, 6, condenser, 7, phase transformation
Energy storage heat exchanger, 8, defrost capillary, 9, evaporator fin, the 101, first normally open solenoid valve, the 102, second normally open solenoid valve,
111, the second normally open solenoid valve, the 112, second normally closed solenoid valve.
Specific embodiment
Further details of narration is carried out to the utility model below in conjunction with attached drawing.
As shown in Fig. 1, the utility model provides a kind of air energy heat pump defrosting system using recuperation of heat comprising adopts
Warm heating recycle system and the hot gas defrosting circulatory system, the heating heating recycle system include compressor 1, air inlet and institute
Latent Heat Storage Exchanger 7, air inlet and the phase transformation that 1 gas outlet of compressor is connected to by the first normally open solenoid valve 101 is stated to store up
Can the connection of 7 gas outlet of heat exchanger condenser 6, pass sequentially through fluid reservoir 5, filter 3, expansion valve 2 and be connected to the condenser 6
Evaporator fin 9 and pass through the gas-liquid separator 4 that is connected to of the first normally closed solenoid valve 111 with the evaporator fin 9, it is described
4 gas outlet of gas-liquid separator is connected to 1 air inlet of compressor；The hot gas defrosting circulatory system includes compressor 1 and the pressure
The evaporator fin 9 and 9 the passing through of evaporator fin that 1 gas outlet of contracting machine is connected to by the second normally open solenoid valve 102
The Latent Heat Storage Exchanger 7 of the white connection of capillary 8 is connected to the Latent Heat Storage Exchanger 7 by the second normally closed solenoid valve 112
Gas-liquid separator 4,4 gas outlet of gas-liquid separator is connected to 1 air inlet of compressor, and the utility model uses phase-change accumulation energy
Means combine phase-change accumulation energy and hot gas defrost under conditions of not commutated by four-way valve component, simplify defrost process, strengthen
Defrosting effect saves the defrost time and saves defrost energy consumption, improves the safe operation of compressor worst cold case, overcomes phase completely
During change energy storage defrost the disadvantages of the Complicated Flows such as four-way valve commutation, while also overcoming defrost heat source in hot gas defrost mode
The disadvantages of single, the time is long, and energy consumption is high, and " liquid hammer " easily occurs for compressor inherits simple process flow in heating power defrost
Advantage.
The course of work is as follows:
Heating heating recycle system accumulation of energy process:
The workflow trend of the utility model heating heating recycle system accumulation of energy process is 1-7-6-5-3-2-
9-4-1, phase change energy storageheat exchanger 7 is connected in 1 high pressure gas pipeline of compressor, phase change energy storageheat exchanger 7 is in compressor 1
A part of thermal energy, the energy storage materials of phase change inside heating heat exchanger 7 are recycled in heating operations, heat absorption occurs solid --- liquid isothermal phase
Change process completes heat absorption accumulation of energy.Since 7 energy storage capability of phase-change accumulation energy device is relatively stable and limited, when energy storage materials of phase change temperature reaches
It arrives or when close to compressor exhaust temperature, since heat transfer temperature difference is close to 0, when phase-change material is close to delivery temperature, phase
Become the no longer accumulation of energy of accumulator 7, therefore only recovery section thermal energy can be ignored the influence of heat pump system heating capacity.With this
The amount of stored heat of phase-change material in system can provide its about 80% defrost to be able to satisfy during defrost under most serious frozen condition
Ability, because some defrost heat is electric energy consumed by compressor.Although the system increases phase-change accumulation energy
Device 7 objectively also increases the investment of system, but has saved four-way valve element, also saves defrost during defrost
The energy consumption of journey has saved the defrost time, and opposite is exactly the time for increasing heat pump heating, especially to effective guarantor of compressor
Shield, in summary from the point of view of several aspects, actually energy-saving benefit and less maintenance cost is far longer than setting for energy storage heat exchanger 7
Standby investment.
The hot gas defrosting circulatory system releases energy exothermic process:
The utility model hot gas defrosting circulatory system defrost process, that is, energy storage heat exchanger 7 is released energy exothermic process workflow and is walked
To being 1-9-8-7-4-1, after loop start, high-temperature gas refrigerant and evaporator fin 9 that 1 gas outlet of compressor comes out
The frost of outer condensation carries out heat exchange, eliminates the frost of evaporator fin 9, through liquefied refrigerant after the throttling of defrost capillary 8
The energy storage heat exchanger 7 that cryogenic liquid enters high temperature, which absorbs, is drawn into compressor 1 through gas-liquid separator 4 after heat gasifies, and completes
Release can exothermic process, so recycle, can sufficiently by utilize the recuperation of heat of phase-change accumulation energy device energy, quickly defrosting, do not need from
User terminal takes thermal cream, simplifies defrost process, eliminates four-way valve module, improves the Energy Efficiency Ratio system of unit, saves
Defrost time and energy consumption.
Embodiment described above is only the preferred embodiment of the utility model, and the not feasible implementation of the utility model
Exhaustion.For persons skilled in the art, under the premise of without departing substantially from the utility model principle and spirit, it is made
Any obvious change out, should all be contemplated as falling within the claims of the utility model.
Claims (1)
1. a kind of air energy heat pump defrosting system using recuperation of heat, which is characterized in that it include heating heating recycle system with
And the hot gas defrosting circulatory system, the heating heating recycle system include that compressor (1), air inlet and the compressor (1) go out
Latent Heat Storage Exchanger (7), air inlet and the Latent Heat Storage Exchanger that port is connected to by the first normally open solenoid valve (101)
(7) condenser (6) of gas outlet connection, pass sequentially through fluid reservoir (5), filter (3), expansion valve (2) and the condenser (6)
The evaporator fin (9) of connection and the gas-liquid point being connected to the evaporator fin (9) by the first normally closed solenoid valve (111)
From device (4), gas-liquid separator (4) gas outlet is connected to compressor (1) air inlet；
The hot gas defrosting circulatory system includes that compressor (1) and the compressor (1) gas outlet pass through the second normally open solenoid valve
(102) evaporator fin (9) being connected to, the phase transformation storage being connected to the evaporator fin (9) by defrost capillary (8)
Energy heat exchanger (7) passes through the gas-liquid separator that the second normally closed solenoid valve (112) are connected to the Latent Heat Storage Exchanger (7)
(4), gas-liquid separator (4) gas outlet is connected to compressor (1) air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821475457.8U CN209042832U (en) | 2018-09-10 | 2018-09-10 | A kind of air energy heat pump defrosting system using recuperation of heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821475457.8U CN209042832U (en) | 2018-09-10 | 2018-09-10 | A kind of air energy heat pump defrosting system using recuperation of heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209042832U true CN209042832U (en) | 2019-06-28 |
Family
ID=67032773
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821475457.8U Expired - Fee Related CN209042832U (en) | 2018-09-10 | 2018-09-10 | A kind of air energy heat pump defrosting system using recuperation of heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209042832U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021169542A1 (en) * | 2019-10-23 | 2021-09-02 | 珠海格力电器股份有限公司 | Air conditioning system capable of performing continuous heating |
| CN114061176A (en) * | 2020-07-31 | 2022-02-18 | 上海海立电器有限公司 | Refrigeration system and defrosting control method thereof |
-
2018
- 2018-09-10 CN CN201821475457.8U patent/CN209042832U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021169542A1 (en) * | 2019-10-23 | 2021-09-02 | 珠海格力电器股份有限公司 | Air conditioning system capable of performing continuous heating |
| CN114061176A (en) * | 2020-07-31 | 2022-02-18 | 上海海立电器有限公司 | Refrigeration system and defrosting control method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190628 |
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| CF01 | Termination of patent right due to non-payment of annual fee |