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 PDFInfo
- 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
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- air
- heat exchanger
- low
- temperature
- heat pump
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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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/40—Geothermal heat-pumps
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Other Air-Conditioning Systems (AREA)
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
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.
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 (2)
| 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 |
| CN108692407A (en) * | 2018-06-15 | 2018-10-23 | 华南理工大学 | A kind of device that architectural environment is adjusted using city piping lane air |
-
2016
- 2016-05-23 CN CN201620471667.4U patent/CN205860555U/en not_active Expired - Fee Related
Cited By (3)
| 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 |
| CN108692407A (en) * | 2018-06-15 | 2018-10-23 | 华南理工大学 | A kind of device that architectural environment is adjusted using city piping lane air |
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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 |