CN104896794A - Heat recovery system of air source heat pump cold and hot water unit - Google Patents
Heat recovery system of air source heat pump cold and hot water unit Download PDFInfo
- Publication number
- CN104896794A CN104896794A CN201510256694.XA CN201510256694A CN104896794A CN 104896794 A CN104896794 A CN 104896794A CN 201510256694 A CN201510256694 A CN 201510256694A CN 104896794 A CN104896794 A CN 104896794A
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- CN
- China
- Prior art keywords
- heat
- heat exchanger
- recovery system
- check valve
- heat recovery
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- 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
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/05—Compression system with heat exchange between particular parts of the system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/19—Pumping down refrigerant from one part of the cycle to another part of the cycle, e.g. when the cycle is changed from cooling to heating, or before a defrost cycle is started
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- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a heat recovery system of an air source heat pump cold and hot water unit. The heat recovery system comprises a heat exchanger, a first check valve, a second check valve, a condenser, a four-way valve, a compressor and a gas-liquid separator; a pipeline is leaded out of an output end of the heat exchanger to be divided into two branches after being connected with the first check valve; one of the branches is connected with the condenser; the other branch and the pipe line which is leaded out of the output end of the heat exchanger are converged into a whole after the other branch is connected with the second check valve; the other branch is connected with the four-way valve; the four-way valve, the compressor and the gas-liquid separator are in circulation connection through a pipeline in turn. According to the heat recovery system of the air source heat pump cold and hot water unit, the possibility of the liquid impact of the four-way valve during winter heating can be effectively prevented, the heating capacity and the heating energy efficiency ratio cannot be affected when heating is performed through a heat pump, and the problem of the four-way valve liquid impact which can be produced in a refrigeration system with the condensing heat recovery function is solved.
Description
Technical field
The present invention relates to the Condensation Heat Recovery Technology field of air-conditioning, specifically a kind of heat recovery system of Air Resource Heat Pump Unit.
Background technology
Air Resource Heat Pump Unit condensing units, as the design of domestic hot-water's thermal source, just progressively develops to normalization.Along with country is to the attention of air source heat pump efficiency, industry starts to carry out Recycle network to the condensation heat of Air Resource Heat Pump Unit.When reclaiming the condensation heat of Air Resource Heat Pump Unit, a series connection water-refrigerant heat exchanger (being called heat recovering heat exchanger afterwards) between exhaust outlet of compressor to condenser, from compressor discharge high-temperature high-pressure refrigerant after carrying out heat exchange with the domestic hot-water heat recovering heat exchanger, carry out train condenser continuation heat exchange after part condensation heat is absorbed by domestic hot-water again and carry out kind of refrigeration cycle, and domestic hot-water is supplied to user's use after heat temperature raising.In the cooling by wind of Dan Leng, heat recovering heat exchanger is directly connected on exhaust outlet of compressor place, then receives on finned cooler.But, if Air-Cooled Heat Pump Unit (band cross valve), where does is heat recovering heat exchanger connected on? with regard to existing market investigation, the heat pump of most of producer is the same with the position in single cooler group carried before, and heat recovering heat exchanger is still connected on exhaust outlet.But winter remains water in heat recovering heat exchanger usually, especially at the severe cold season that temperature is low especially, residual water at low temperature in heat recovering heat exchanger can be condensed into compressor air-discharging the cold-producing medium of saturation state or even supercooled state, enter cross valve afterwards, in this case cross valve liquid hammer may be caused, cross valve is damaged, and whole system paralyses.
Summary of the invention
The object of this invention is to provide a kind of heat recovery system of Air Resource Heat Pump Unit, when not only effectively can prevent winter heating there is the possibility of liquid hammer in cross valve, and heating capacity and heating energy efficiency ratio can not be had influence on when heat pump heats, solve the problem of the cross valve liquid hammer that may occur in the refrigeration system of band condensing units function.
Technical scheme of the present invention is as follows:
A kind of heat recovery system of Air Resource Heat Pump Unit, include heat exchanger, first check valve, second check valve, condenser, cross valve, compressor and gas-liquid separator, it is characterized in that: after the port of export of described heat exchanger draws first check valve of pipeline also described in connection, be divided into two branch roads, one of them branch road is connected with described condenser, be compiled in one with the pipeline that the entrance end from described heat exchanger is drawn and be connected with described cross valve after the second check valve described in another branch road connects, described cross valve, compressor and gas-liquid separator are circulated successively by pipeline and are connected.
The heat recovery system of described Air Resource Heat Pump Unit, is characterized in that: described heat exchanger adopts recuperation of heat double pipe heat exchanger.
The heat recovery system of described Air Resource Heat Pump Unit, is characterized in that: described condenser adopts finned cooler.
In air source heat pump field, much all adopt Condensation Heat Recovery Technology, to obtain domestic hot-water and to improve refrigeration performance, and heat recovering heat exchanger is generally all connected on exhaust outlet of compressor, but when oppositely heating, generally all can remain a part of water in heat recovering heat exchanger, particularly in the season of severe cold, cross valve is entered after being condensed to low-pressure gas-liquid two-phase after the high-temperature high-pressure refrigerant gas of discharging from compressor mouth to run into heat recovering heat exchanger residual moisture, and a period of time cross valve can be switched to heating mode after unit start, and saturated or supercooled liquid is out known from experience and is caused cross valve liquid hammer from heat recovering heat exchanger, cross valve slide block moment is washed out distortion, cannot normally work.The present invention can be used in the design of the air-cooled heat pump water chiller-heater units of all band heat recovery functions, both can not affect heat recovery function and reclaim heat, and having overcome again cross valve when heating and occur the weakness of liquid hit phenomenon possibility.
Install two groups of check valves additional after the present invention mainly adopts and heat recovering heat exchanger is connected on cross valve, when freezing, the high pressure refrigerant liquid of high-temperature high-pressure refrigerant gas first after cross valve of discharging from system compressors enters heat recovering heat exchanger and domestic hot-water carries out heat exchange, and then enters finned cooler.
Beneficial effect of the present invention:
1, during refrigeration, can be with that recuperation of heat unit is the same carries out condensing units with other, when heating, the high-temperature high-pressure refrigerant gas of discharging from compressor, first by entering heat recovering heat exchanger again after cross valve, has thoroughly evaded the possibility of cross valve liquid hammer.
2, the present invention's one group of double pipe heat exchanger and two groups of check valves reclaim condensation heat, preventing the evaporimeter gas out when heating excessive through heat recovering heat exchanger resistance, making whole system on the basis normally can producing cold water, increase the function providing domestic hot-water.
3, heat recovering heat exchanger of the present invention adopts double pipe heat exchanger instead of brazing plate type heat exchanger, prevents exhaust resistance during refrigeration excessive.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention, and wherein, refrigerant flow direction when solid arrow represents refrigeration, dotted arrow represents refrigerant flow direction when heating.
Detailed description of the invention
See Fig. 1, a kind of heat recovery system of Air Resource Heat Pump Unit, include heat exchanger 1, first check valve 2, second check valve 3, condenser 4, cross valve 5, compressor 6 and gas-liquid separator 7, draw pipeline from the port of export of heat exchanger 1 and be divided into two branch roads after connecting the first check valve 2, one of them branch road is connected with condenser 4, another branch road is compiled in one with the pipeline that the entrance end from heat exchange 1 device is drawn and is connected with cross valve 5 after connecting the second check valve 3, cross valve 5, compressor 6 and gas-liquid separator 7 are circulated successively by pipeline and are connected.
In the present invention, heat exchanger 1 adopts recuperation of heat double pipe heat exchanger; Condenser 4 adopts finned cooler.
During refrigeration, the high-temperature high-pressure refrigerant gas flow of discharging from compressor 6 enters heat exchanger 1 and carries out heat exchange with the domestic hot-water of lower temperature after cross valve 5, and heating domestic hot water, if by the water yield of the domestic hot-water heated is comparatively large or water temperature is lower, then then can become saturated cold-producing medium from heat exchanger 1 cold-producing medium out, otherwise, then then can become the lower refrigerant gas of temperature from heat exchanger 1 cold-producing medium out to enter condenser 4 again and carry out condensation or excessively cold, condensed cold-producing medium enters after evaporimeter absorption refrigeration through throttling and get back to compressor 6 after cross valve 5, carry out kind of refrigeration cycle next time again.
Claims (3)
1. the heat recovery system of an Air Resource Heat Pump Unit, include heat exchanger, first check valve, second check valve, condenser, cross valve, compressor and gas-liquid separator, it is characterized in that: after the port of export of described heat exchanger draws first check valve of pipeline also described in connection, be divided into two branch roads, one of them branch road is connected with described condenser, be compiled in one with the pipeline that the entrance end from described heat exchanger is drawn and be connected with described cross valve after the second check valve described in another branch road connects, described cross valve, compressor and gas-liquid separator are circulated successively by pipeline and are connected.
2. the heat recovery system of Air Resource Heat Pump Unit according to claim 1, is characterized in that: described heat exchanger adopts recuperation of heat double pipe heat exchanger.
3. the heat recovery system of Air Resource Heat Pump Unit according to claim 1, is characterized in that: described condenser adopts finned cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510256694.XA CN104896794B (en) | 2015-05-19 | 2015-05-19 | The heat recovery system of Air Resource Heat Pump Unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510256694.XA CN104896794B (en) | 2015-05-19 | 2015-05-19 | The heat recovery system of Air Resource Heat Pump Unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104896794A true CN104896794A (en) | 2015-09-09 |
| CN104896794B CN104896794B (en) | 2018-01-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510256694.XA Active CN104896794B (en) | 2015-05-19 | 2015-05-19 | The heat recovery system of Air Resource Heat Pump Unit |
Country Status (1)
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| CN (1) | CN104896794B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783331A (en) * | 2016-05-10 | 2016-07-20 | 合肥天鹅制冷科技有限公司 | Heat efficient recovery device for air source water chilling unit |
| CN106225292A (en) * | 2016-07-27 | 2016-12-14 | 重庆美的通用制冷设备有限公司 | Net for air-source heat pump units system |
| CN107965941A (en) * | 2017-12-26 | 2018-04-27 | 王雪峰 | A kind of interior conversion hysteria water source heat pump units |
| CN109405348A (en) * | 2018-12-05 | 2019-03-01 | 江苏天舒电器有限公司 | A kind of bathroom utilizes heat pump system with Multi-stage heat |
| CN110500809A (en) * | 2019-09-18 | 2019-11-26 | 广东海洋大学 | A kind of cold cycling regulating system for indoor ice and snow place terrace |
| CN111811166A (en) * | 2020-08-20 | 2020-10-23 | 广东瑞星新能源科技有限公司 | Take trigeminy of heat recovery to supply heat pump set |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003185287A (en) * | 2001-12-25 | 2003-07-03 | Shimizu Corp | Manufacturing system for supercooled water and hot water |
| JP2005249319A (en) * | 2004-03-05 | 2005-09-15 | Fujitsu General Ltd | Heat pump hot water supply air-conditioner |
| CN101307939A (en) * | 2007-05-15 | 2008-11-19 | 夏晓宏 | Heat reclamation type modularized air-cooling hot water machine unit |
| CN101368770A (en) * | 2007-08-17 | 2009-02-18 | 劳特斯空调(江苏)有限公司 | Multifunctional heat pump or single-cooling unit |
| CN204693890U (en) * | 2015-05-19 | 2015-10-07 | 合肥天鹅制冷科技有限公司 | The heat recovery system of Air Resource Heat Pump Unit |
-
2015
- 2015-05-19 CN CN201510256694.XA patent/CN104896794B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003185287A (en) * | 2001-12-25 | 2003-07-03 | Shimizu Corp | Manufacturing system for supercooled water and hot water |
| JP2005249319A (en) * | 2004-03-05 | 2005-09-15 | Fujitsu General Ltd | Heat pump hot water supply air-conditioner |
| CN101307939A (en) * | 2007-05-15 | 2008-11-19 | 夏晓宏 | Heat reclamation type modularized air-cooling hot water machine unit |
| CN101368770A (en) * | 2007-08-17 | 2009-02-18 | 劳特斯空调(江苏)有限公司 | Multifunctional heat pump or single-cooling unit |
| CN204693890U (en) * | 2015-05-19 | 2015-10-07 | 合肥天鹅制冷科技有限公司 | The heat recovery system of Air Resource Heat Pump Unit |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783331A (en) * | 2016-05-10 | 2016-07-20 | 合肥天鹅制冷科技有限公司 | Heat efficient recovery device for air source water chilling unit |
| CN106225292A (en) * | 2016-07-27 | 2016-12-14 | 重庆美的通用制冷设备有限公司 | Net for air-source heat pump units system |
| CN107965941A (en) * | 2017-12-26 | 2018-04-27 | 王雪峰 | A kind of interior conversion hysteria water source heat pump units |
| CN107965941B (en) * | 2017-12-26 | 2023-12-22 | 王雪峰 | Internal conversion type water source heat pump unit |
| CN109405348A (en) * | 2018-12-05 | 2019-03-01 | 江苏天舒电器有限公司 | A kind of bathroom utilizes heat pump system with Multi-stage heat |
| CN109405348B (en) * | 2018-12-05 | 2023-05-09 | 江苏天舒电器有限公司 | Multistage heat utilization heat pump system for bathroom |
| CN110500809A (en) * | 2019-09-18 | 2019-11-26 | 广东海洋大学 | A kind of cold cycling regulating system for indoor ice and snow place terrace |
| CN110500809B (en) * | 2019-09-18 | 2024-02-09 | 广东海洋大学 | Cold and hot circulation adjusting system for terrace of indoor ice and snow places |
| CN111811166A (en) * | 2020-08-20 | 2020-10-23 | 广东瑞星新能源科技有限公司 | Take trigeminy of heat recovery to supply heat pump set |
| CN111811166B (en) * | 2020-08-20 | 2024-06-11 | 广东瑞星新能源科技有限公司 | Triple heat supply pump unit with heat recovery function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104896794B (en) | 2018-01-12 |
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