CN205860555U - A kind of low-temperature air source heat pump system exempting frost - Google Patents

A kind of low-temperature air source heat pump system exempting frost Download PDF

Info

Publication number
CN205860555U
CN205860555U CN201620471667.4U CN201620471667U CN205860555U CN 205860555 U CN205860555 U CN 205860555U CN 201620471667 U CN201620471667 U CN 201620471667U CN 205860555 U CN205860555 U CN 205860555U
Authority
CN
China
Prior art keywords
air
heat exchanger
low
temperature
heat pump
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.)
Expired - Fee Related
Application number
CN201620471667.4U
Other languages
Chinese (zh)
Inventor
张永贵
于本瑶
梁策
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yanshan University
Original Assignee
Yanshan University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yanshan University filed Critical Yanshan University
Priority to CN201620471667.4U priority Critical patent/CN205860555U/en
Application granted granted Critical
Publication of CN205860555U publication Critical patent/CN205860555U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/40Geothermal heat-pumps
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/10Geothermal energy

Abstract

This utility model belongs to low-temperature air source heat pump field, particularly to a kind of low-temperature air source heat pump system exempting frost.Its main method is, blower fan and air heat exchanger are placed in closed room, blower fan extraction is closed heat exchange room air and is sent into the reversed return type underground buried tube building outer horizontal laying by pipeline, air in pipe laying and soil heat exchange, improve pipe laying air temperature to more than 0 DEG C, then send back in closed room at air heat exchanger.Underground pipe is combined by this system with low-temperature air source heat pump, makes air themperature around air heat exchanger higher than 0 DEG C, solves low-temperature air source heat pump frosting problem, and increases the temperature difference of cold-producing medium and air, is effectively increased the efficiency of low-temperature air source heat pump.

Description

A kind of low-temperature air source heat pump system exempting frost
Technical field
This utility model belongs to low-temperature air source heat pump field, particularly to a kind of low-temperature air source heat pump system exempting frost System.
Background technology
Air source heat pump can be drawn abundant low-grade energy from ambient air and be converted into high-grade energy, easy to use, Mounting cost is relatively low, it has also become the one being most widely used in the many patterns of heat pump.But, the range of application of air source heat pump Retrained by weather conditions.When outside air temperature is the lowest, air source heat pump there will be that heating capacity is low, COP declines, operation troubles Etc. problem.Low-temperature air source heat pump, by the improvement of air source heat pump is prevented effectively from these problems, has advantageously promoted air The development of source heat pump technology.
Low-temperature air source heat pump still has the disadvantage that: when outdoor temperature is the lowest when, outdoor heat exchanger will frosting, Ice will be become if do not cleared up, thus block heat exchanger and cause machine to be not normally functioning, have a strong impact on the work effect of machine Rate.When running under low temperature, high humidity environment, outdoor heat exchanger frosting is inevitable, and the most common Defrost technology includes electricity Defrosting, hot gas bypass defrosting and cross valve reversely defrosting etc., Chinese scholars also can stablize in constantly research and development, effectively defrost New technique.But it is possible that defrosting excessively, affects the problems such as thermal comfort, and can consume substantial amounts of electric energy during Chu Shuan, Do not tackle the problem at its root.
Summary of the invention
In order to overcome the deficiency that low-temperature air source heat pump Defrost technology is unstable, energy-saving efficiency is low, this utility model provides Exempting from Defrost technology, will combine with underground pipe by existing air source heat pump, this technology can not only avoid frosting problem, Er Qieneng The effective coefficient of performance improving low-temperature air source heat pump.
It is as follows that the present invention solves the scheme that its technical problem used:
A kind of low-temperature air source heat pump system exempting frost, swollen by compressor, four-way change-over valve, water-to-water heat exchanger, hot/cold processed Swollen valve, air heat exchanger are joined end to end formation loop successively by pipeline, and in pipeline, stream has cold-producing medium, water-to-water heat exchanger and recirculated water Pump, building user are connected and constitute heating, refrigeration output loop.For preventing air heat exchanger frosting, it is aided with in air heat exchanger side Blower fan and underground pipe, be placed in blower fan and air heat exchanger in closed room, and blower fan extraction closes heat exchange room air by pipe Road is sent into and is built outer underground buried tube, and through burying air in tube and soil heat exchange, raising pipe laying air temperature is to more than 0 DEG C, then send Return in closed room.
Described closed room, door and window closes, and system initial operating stage puts into sodium sulfate or other kinds of dry in room Agent, reduces air humidity, prevents water vapor in air too high levels easily in the liquefaction of air heat exchanger surface, frosting, and system is run During do not have steam to produce into, just not in use by desiccant.
Described air heat exchanger and blower fan, the air heat exchanger of low-temperature air source heat pump is as in closed room, and in room Interior one end away from air heat exchanger arranges blower fan, and underground pipe entrance side is connected with blower fan, after heat exchange is heated up by outlet side Air is delivered to around air heat exchanger, forms air circulation loop, the air in underground pipe and the continuous heat exchange of soil, closes room Interior temperature also can persistently change, and can maintain the permanently effective operation of heat pump.
The outer underground buried tube of described building, is embedded in below frozen soil layer, determines in conjunction with specification and the practical situation such as local climate, soil Fixed concrete pipe laying depth and Insulation.Pipe laying uses horizontal versions to lay, and so arranges and can avoid costly, maintenance difficulty, The problems such as cold and hot accumulation;System reversed return type can make the pressure loss be prone to balance.
The beneficial effects of the utility model are: on the one hand, and the air in winter room is through underground pipe and soil heat exchange Make air themperature raise after be re-fed into room, when send into room temperature reach more than 0 DEG C time, air heat exchanger will not frosting, Native system avoids defrosting energy consumption, has reached energy-conservation purpose.On the other hand, this system can also pass through cross valve and expansion The conversion of valve is used for cooling in summer.For winter/summer hot/cold, the air in closed room can be formed by underground pipe and follow Ring loop and the continuous raise/lower of temperature, thus at air heat exchanger, increase the temperature difference sending into air with cold-producing medium, effectively carry The high efficiency of low-temperature air source heat pump.Additionally, winter or summer heat pump cycle runs can effectively solve Soil Thermal unbalance.
Accompanying drawing explanation
Fig. 1 is the low-temperature air source heat pump schematic diagram with underground pipe.
Reference numeral illustrates: 1. compressor, 2. four-way change-over valve, 3. water-to-water heat exchanger, 4. heats expansion valve, 5. air heat-exchange Device, 6. blower fan, 7. underground pipe, 8. water circulating pump, 9. building, 10. refrigeration expansion valve.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
As it can be seen, during winter heating, db, ac of four-way change-over valve 2 are respectively communicated with, the gaseous refrigerant warp of low-temp low-pressure The gas becoming High Temperature High Pressure after compressor 1 compression enters water-to-water heat exchanger 3.Owing to the temperature of cold-producing medium is higher than the temperature of water, make Cryogen is cooled to liquid from gaseous state, and liquid refrigerant, after heating expansion valve 4 throttling, enters air heat exchanger under pressure 5, low-pressure refrigerant gas absorbs the heat in air and again vaporizes the gaseous refrigerant forming low-temp low-pressure, thus completes refrigeration The once circulation of agent.In the process, the water that water circulating pump 8 provides and building backwater are when flowing through water-to-water heat exchanger, in the temperature difference The lower cold-producing medium heat release in water of effect, makes water temperature raise and feeds in building 9, can be used for building heat supplying or as domestic water in addition Utilize.
Closed room inner blower 6 extracts room air and sends into the outer underground buried tube 7 of building by pipeline, due to frozen soil layer in winter Soil below temperature is higher than outdoor temperature, the draw heat from soil of the air in pipe laying, improves pipe laying air temperature Sending back in closed room to more than 0 DEG C, the air themperature around air heat exchanger is higher than 0 DEG C, it is to avoid frosting again.So exist Can increase the temperature difference of cold-producing medium and air at air heat exchanger 5, cold-producing medium absorbs more heat from air, in water heat exchange The more heat of feedwater will be transmitted, to improve coefficient of heat supply at device 3.Although blower fan 6 can consume a little electric energy, but with defrosting institute The energy consumed is compared the least, and air does not has consumed energy with the heat exchange of soil and can form wind circulation loop, can reduce Consumption, sustainable application.
During cooling in summer, ad, bc of four-way change-over valve 2 are respectively communicated with, and the gaseous refrigerant of low-temp low-pressure is pressed through compressor 1 The gas becoming High Temperature High Pressure after contracting enters air heat exchanger 5.Owing to the temperature of cold-producing medium is higher than the temperature of air, cold-producing medium to Being condensed into high-pressure liquid in air after heat release, liquid refrigerant, after refrigeration expansion valve 10 throttles, enters water-to-water heat exchanger 3, low pressure Gas refrigerant absorbs the heat in water and again vaporizes the gaseous refrigerant forming low-temp low-pressure, thus completes cold-producing medium once Circulation.In the process, the water that water circulating pump 8 provides and building backwater, when flowing through water-to-water heat exchanger 3, are made under the effect of the temperature difference Cryogen absorbs heat from water, makes water temperature reduce and feeds in building 9, it is achieved cooling in summer.

Claims (3)

1. exempt a low-temperature air source heat pump system for frost, it is characterized in that by compressor, four-way change-over valve, water-to-water heat exchanger, system Hot/cold expansion valve, air heat exchanger are joined end to end formation loop successively by pipeline, connect winter and heat expansion valve, connect system summer Cold expansion valve, in pipeline stream have cold-producing medium, described water-to-water heat exchanger and water circulating pump, building be connected composition heating, refrigeration export back Road, described air heat exchanger side is aided with blower fan and underground pipe, and blower fan is away from air heat exchanger, underground pipe entrance side and blower fan phase Even, the air after heat exchange is heated up by outlet side is delivered to around air heat exchanger, thus avoids air heat exchanger frosting, increases simultaneously Cold-producing medium and the temperature difference of surrounding air in air heat exchanger so that heat pump heat supply coefficient increases.
A kind of low-temperature air source heat pump system exempting frost the most according to claim 1, is characterized in that air heat exchanger is put In closed room, after room air being introduced building outer beneath pipe laying, with soil heat exchange by pipeline with blower fan, it is re-fed into room In, make room air form circulation loop with buried air in tube.
The low-temperature air source heat pump system exempting frost the most according to claim 1, is characterized in that underground pipe is embedded in frozen soil layer Hereinafter, system of laying is horizontal reversed return type.
CN201620471667.4U 2016-05-23 2016-05-23 A kind of low-temperature air source heat pump system exempting frost Expired - Fee Related CN205860555U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620471667.4U CN205860555U (en) 2016-05-23 2016-05-23 A kind of low-temperature air source heat pump system exempting frost

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620471667.4U CN205860555U (en) 2016-05-23 2016-05-23 A kind of low-temperature air source heat pump system exempting frost

Publications (1)

Publication Number Publication Date
CN205860555U true CN205860555U (en) 2017-01-04

Family

ID=57643775

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620471667.4U Expired - Fee Related CN205860555U (en) 2016-05-23 2016-05-23 A kind of low-temperature air source heat pump system exempting frost

Country Status (1)

Country Link
CN (1) CN205860555U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107314562A (en) * 2017-07-21 2017-11-03 湖北益通建设股份有限公司 A kind of heat energy utilization system of utilization ground end heat exchange chamber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107314562A (en) * 2017-07-21 2017-11-03 湖北益通建设股份有限公司 A kind of heat energy utilization system of utilization ground end heat exchange chamber
CN107314562B (en) * 2017-07-21 2018-05-29 湖北益通建设股份有限公司 A kind of heat energy utilization system using ground end heat exchange chamber

Similar Documents

Publication Publication Date Title
CN203231419U (en) Air conditioner
CN202041020U (en) Household air-source heat pump-floor radiation multifunctional system
CN102645055B (en) Adaptively-matched solar auxiliary air source heat pump device
CN105299987A (en) Air source heat pump sprinkling defrosting device based on super-hydrophobic finned tube exchanger
CN105402966B (en) A kind of solar air source heat pumps
CN202692535U (en) Novel air source floor radiant heating and wind disk refrigerating system
CN207163018U (en) A kind of ground can frost-free air evaporator
CN204240636U (en) A kind of new type solar energy-air energy combined heat-pump cold and heat combined supply unit
CN103047802A (en) Air source heat pump defrosting system used in winter
CN203629170U (en) Composite energy heat pump type energy-saving household central air conditioner
CN205860555U (en) A kind of low-temperature air source heat pump system exempting frost
CN202675732U (en) Self-adaptation matching solar auxiliary air source heat pump device
CN202648015U (en) Indirect solar energy assisted air source heat pump radiant heating system
CN103528295B (en) The energy-saving residential central air-of compound energy heat-pump-type and control method thereof
CN206073214U (en) A kind of solar air source combined heat pump is without water heating system
CN105258389A (en) Compensation type dual-source heat pump cold and hot water unit
CN209655400U (en) A kind of heat pump heating system
CN208871933U (en) A kind of energy-saving and water-saving type heat water-spraying removes defrosting system
CN206191903U (en) Small -size directly -heated type heat pump water heater unit can defrost
CN206055821U (en) A kind of efficient shallow ground energy-air source heat pump system
CN207907398U (en) Ice-chilling air conditioning system based on pneumatic transmission & distribution
CN105423617A (en) Air source flexible water chiller-heater unit and operation method
CN202938433U (en) Double-source heat pump air-conditioning unit
CN206398898U (en) The wine cellar air-conditioning system that solar energy is applied with geothermal energy united
CN207230993U (en) Double end air source heat pump systems run switching control

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170104

Termination date: 20170523