CN201364001Y - Composite source heat pump drier - Google Patents
Composite source heat pump drier Download PDFInfo
- Publication number
- CN201364001Y CN201364001Y CNU2009201351669U CN200920135166U CN201364001Y CN 201364001 Y CN201364001 Y CN 201364001Y CN U2009201351669 U CNU2009201351669 U CN U2009201351669U CN 200920135166 U CN200920135166 U CN 200920135166U CN 201364001 Y CN201364001 Y CN 201364001Y
- Authority
- CN
- China
- Prior art keywords
- air
- xeothermic
- pipeline
- liquid separator
- source heat
- 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
Links
Images
Abstract
The utility model discloses a composite source heat pump drier, comprising a compressor, a four-way valve, an evaporator, a water ring heat exchanger, an air drying and heating device and an air-liquid separator. Under the condition that an air source exchanges heat, the four-way valve is respectively connected with the compressor, the evaporator, the air drying and heating device and the air-liquid separator; a pipeline between the evaporator and the air drying and heating device is connected with an electric auxiliary defrosting device; the evaporator is serially connected with the air-liquid separator, a drying filter, a one-way valve, a capillary tube, a visual liquid lens and a liquid storing tank along the pipeline of the air drying and heating device; the one-way valve and the capillary tube are connected with a two-way expansion valve in parallel, and then are connected on the pipeline in series. Under the condition that a water source and a ground source exchange heat, the compressor is respectively connected with the air drying and heating device, the air-liquid separator, the drying filter, a liquid storing tank and the water ring heat exchanger; the water ring heat exchanger is serially connected with the air-liquid separator, the drying filter, the one-way valve, the capillary tube, the visual liquid lens and the liquid storing tank in sequence along the pipeline of the air drying and heating device; and the one-way valve and the capillary tube are connected with the two-way expansion valve in parallel, and then are connected on the pipeline in series. Under the condition of composite heat source, the composite source heat pump drier has wide application range, high heat exchange efficiency and good material drying effect in the premise of using the special air drying and heating device, simultaneously can guarantee the stable running of equipment and can achieve the purposes of zero pollution emission, energy conservation and efficiency improvement.
Description
Technical field
The utility model relates to a kind of multiple source heat pump drier, particularly a kind of applied range, heat exchange efficiency height, the drying machine that dried material is effective.
Background technology
Utilize the air conditioner type heat pump techniques to be used as drying materials etc. at present, its limiting temperature that can stablize the output heated dry air can not surpass 60 degree, even can accomplish in the laboratory, but unstable; Because it is to be cost to shorten the service life heat the critical component compressor greatly, and very unstable, can not satisfy the requirement that most of material needs high temperature drying, be difficult to promote the use of.At present having only only a few in this field is to heat with single-stage heat pump and single heat exchanger, produces heated dry air, and not only heat exchange efficiency is low, can not produce the high-temperature hot air that is higher than 60 degree that is used for dried material, and operation is very unstable.This is because the intake air temperature of compressor can not surpass the limit of 45 degree, surpasses this temperature, and compressor will be shut down automatic protection, as protects malfunctioningly, will burn out compressor.This has just restricted the function of producing high-temperature hot air with it.
The utility model content
Can not stablize hot-air and the low problem of the thermal efficiency that is higher than 60 degree that produce at heat pump in the prior art, the utility model provides a kind of multiple source heat pump drier, utilizing the air source, under the different heat sources conditions such as water source and source, ground, in conjunction with adopting the xeothermic device of special-purpose air, this xeothermic device is by carrying out the internal classification heating, realize variable air quantity, thereby raising heat exchange efficiency, the stable high-temperature hot air that is higher than 60 degree that produces, both guaranteed compression function reliability service under normal condition, satisfy the requirement of oven dry material, improved the effect of oven dry and the service life of drying equipment again.
The utility model adopts following technical scheme in order to realize above-mentioned technical purpose:
A kind of multiple source heat pump drier, it comprises compressor, cross valve, evaporimeter, water ring heat exchanger, the xeothermic device of air, gas-liquid separator.It is characterized in that: under the condition of described air source heat exchange, described cross valve is connected with described compressor, described evaporimeter, the xeothermic device of described air, described gas-liquid separator respectively; On the pipeline between described evaporimeter and the xeothermic device of described air, be connected with the auxiliary defrosting device of electricity, at described evaporimeter along being in series with gas-liquid separator, device for drying and filtering, check valve, capillary, liquid-sighting glass and fluid reservoir on the pipeline of the xeothermic device of described air successively; Check valve and capillary are connected in series on the pipeline with after two-way expansion valve is in parallel again.Under the condition of described water source and ground source heat exchange, described compressor is connected with the xeothermic device of described air, described gas-liquid separator, described water ring heat exchanger respectively; At described water ring heat exchanger along being in series with gas-liquid separator, device for drying and filtering, check valve, capillary, liquid-sighting glass and fluid reservoir on the pipeline of the xeothermic device of described air successively; Check valve and capillary are with after two-way expansion valve is in parallel, again on the series pipe.In addition, for guaranteeing the stability of heat exchange efficiency and heat exchange, the xeothermic device of each air has two compressor symmetries with capacity heat supply simultaneously, thereby improves whole set equipment maintainability and stability greatly.
Preferably, air outlet special fan, working medium import and temperature-sensing probe are equipped with in the front end front in foremost one row's monomer condensation device of the xeothermic device of air of described a kind of multiple source heat pump drier.
Preferably, air inlet air-valve and sender property outlet are equipped with in the terminal front in row's monomer condensation device backmost of the xeothermic device of air of described a kind of multiple source heat pump drier, and return air inlet is equipped with in its side.
Preferably, must keep certain space and distance between every adjacent two row's monomer condensation devices of the xeothermic device of air of described a kind of multiple source heat pump drier.
Preferably, the electric auxiliary heating device of the xeothermic device of air of described a kind of multiple source heat pump drier is installed in monomer condensation device head and the tail two rows' centre position.
Preferably, the working medium import of the xeothermic device of air of described a kind of multiple source heat pump drier is contained in first row's monomer condensation device, and sender property outlet is contained in the tail row monomer condensation device.
A kind of multiple source heat pump drier of the present utility model has following beneficial effect:
The utility model provides a kind of multiple source heat pump drier, utilizing under the different heat sources conditions such as air source, water source and source, ground, in conjunction with adopting the xeothermic device of special-purpose air, in the xeothermic device of this air several monomer condensation devices from front to back classification arrange head and the tail and be in series, effect with classification heating, the air outlet special fan of while front end and terminal air inlet air-valve, the function that adjustable intake is all arranged, thereby can change the air mass flow, the heat transfer rate that need heating in the xeothermic device of air, and then classification enhanced heat exchange; Simultaneously, the working medium import is at front end, and sender property outlet and allows high temperature refrigerant carry out spiral driving in the wrong direction with cold air in pipeline to flow endways; Greatly effectively improve heat transfer temperature difference and heat exchange gradient by this convective methods, carried out abundant heat exchange, thereby greatly improved the efficient of heat exchange.Simultaneously, owing to the working medium that enters compressor is and the air inversion that enters to allow working medium come out from compressor high temperature, enter the heat-exchanger rig heat exchange, the working medium temperature since with the cross-ventilation heat exchange, temperature reduces step by step, and the temperature of air is because heat exchange obtains heat and raise step by step; After the permissive temperature of working medium through cooling to the compressor normal operation step by step, enter compressor with low-temperature condition again, just can guarantee that compressor moves under normal condition, thereby fully guaranteed the service life of compressor, the operating mode that realization equipment can normally move, reach the stable high-temperature hot air purpose that produces, satisfy the requirement that the user is dried material.
In addition, for guaranteeing the stability of heat exchange efficiency and heat exchange, the xeothermic device of each air has two compressor symmetries with capacity heat supply simultaneously, thereby improves whole set equipment maintainability and stability greatly.
A kind of multiple source heat pump drier of the present utility model has applied range, utilizes thermal source many, the heat exchange efficiency height, and dried material is effective, simultaneously, can guarantee equipment stable operation, and can realize zero disposal of pollutants and object of energy saving.
Description of drawings
Fig. 1 is the connection line schematic diagram of a kind of preferred embodiment of a kind of multiple source heat pump drier of the present utility model under the condition of air source.
Fig. 2 is the connection line schematic diagram of a kind of preferred embodiment of a kind of multiple source heat pump drier of the present utility model under water source and source, ground condition.
Fig. 3 is a kind of profile of preferred embodiment of the xeothermic device of air of a kind of multiple source heat pump drier of the present utility model;
The 1-compressor, 2-cross valve, 3-evaporimeter, 4-device for drying and filtering, the two-way expansion valve of 5-, 6-check valve, 7-capillary, 8-fluid reservoir, the xeothermic device of 9-air, 10-gas-liquid separator, 11-water ring heat exchanger
The 12-liquid-sighting glass, the auxiliary defrosting device of 13-electricity, 14-power pressure switch
The 201-housing, the plate condenser of 202-, 203-air outlet special fan, 204-air inlet air-valve, the 205-temperature-sensing probe, 206-return air inlet, 207-electric auxiliary heating device, 208-housing warming plate, the import of 209-working medium, 210-sender property outlet, the built-in copper sleeve of 211-, 212-aluminium fin
The specific embodiment
Preferred embodiment of the present utility model now is described in conjunction with the accompanying drawings.
As shown in Figure 1, multiple source heat pump drier of the present utility model is under the heat transfer boundary condition of air source, by comprising that compressor 1, cross valve 2, evaporimeter 3, the xeothermic device 9 of air and gas-liquid separator 10 connect to form.Cross valve 2 is connected with gas-liquid separator 10 with compressor 1, evaporimeter 3, the xeothermic device 9 of air respectively; On the pipeline between evaporimeter 3 and the xeothermic device 9 of air, be connected with electrochemical white device 13, be in series with device for drying and filtering 4, check valve 6, capillary 7, liquid-sighting glass 12, fluid reservoir 8 on the pipeline between the xeothermic device 9 successively along air at evaporimeter 3; After check valve 6 and capillary 7 and two-way expansion valve 5 are in parallel, be connected in series on the pipeline.Also power pressure switch 14 can be arranged between compressor 1 and the cross valve 2, also power pressure switch 14 can be arranged between compressor 1 and the gas-liquid separator 10.
Under heating mode, the low-temp low-pressure gas that compressor 1 sucks in the gas-liquid separator 10, after the compressed machine acting supercharging, discharge high temperature and high pressure gas, process cross valve 2 is to the xeothermic device 9 of air, the high temperature and high pressure gas heat release is cooled to cryogenic high pressure liquid in the xeothermic device 9 of air, and make the cold air outside the working medium copper pipe obtain heating, high temperature refrigerant and cold air are convection current and moving, because the xeothermic device 9 of this air heats by internal classification, simultaneously, because the flow velocity and the flow of air outlet special fan 203 and air inlet air-valve 204 equal adjustable airs, thereby changed the flow of heated dry air, also changed heat transfer temperature difference and heat exchange gradient, improved the efficient of heat exchange greatly.Cryogenic high pressure liquid comes out from the xeothermic device 9 of air, flow into fluid reservoir 8, through liquid-sighting glass 12 to two-way expansion valve 5, highly pressurised liquid reduces pressure after two-way expansion valve 5 throttlings and is low-temp low-pressure liquid, remove moisture and impurity behind the drying filter 4 again, the airborne heat of absorbing environmental in the copper pipe through going into evaporimeter 3 and be vaporized into low-pressure gas, arrive gas-liquid separator 10 through cross valve 2 again, after gas-liquid separator 10 separates, make that the working medium of getting back in the compressor 1 is gas, so just finish one and heat circulation.
Shown in Figure 2, multiple source heat pump drier of the present utility model is under water source and source, ground heat transfer boundary condition, by comprising that compressor 1, water ring heat exchanger 11, the xeothermic device 9 of air and gas-liquid separator 10 connect to form.Compressor 1 is connected with the xeothermic device 9 of gas-liquid separator 10, water ring heat exchanger 11 and air respectively; Be in series with device for drying and filtering 4, check valve 6, capillary 7, liquid-sighting glass 12, fluid reservoir 8 on the pipeline between the xeothermic device 9 successively along air at water ring heat exchanger 11; After check valve 6 and capillary 7 and two-way expansion valve 5 are in parallel, be connected in series on the pipeline.Also power pressure switch 14 can be arranged between the xeothermic device 9 of compressor 1 and air, also power pressure switch 14 can be arranged between compressor 1 and the gas-liquid separator 10.
Under heating mode, the low-temp low-pressure gas that compressor 1 sucks in the gas-liquid separator 10, after the compressed machine acting supercharging, discharge high temperature and high pressure gas, through the xeothermic device 9 of air, the high temperature and high pressure gas heat release is cooled to cryogenic high pressure liquid in the xeothermic device 9 of air, and make the cold air outside the working medium copper pipe obtain heating, high temperature refrigerant and cold air are convection current and moving, because the xeothermic device 9 of this air is by the internal classification heating, simultaneously, because the flow velocity and the flow of air outlet special fan 203 and air inlet air-valve 204 equal adjustable airs, thereby changed the flow of heated dry air, also changed heat transfer temperature difference and heat exchange gradient, improved the efficient of heat exchange greatly.Cryogenic high pressure liquid comes out from the xeothermic device 9 of air, flow into fluid reservoir 8, through liquid-sighting glass 12 to two-way expansion valve 5, highly pressurised liquid reduces pressure after two-way expansion valve 5 throttlings to low-temp low-pressure liquid, removes moisture and impurity again behind the drying filter 4, absorbs the heat of aqueous vapor in the copper pipe through going into water ring heat exchanger 11 and is vaporized into low-pressure gas, enter gas-liquid separator 10 again, after gas-liquid separator 10 separates, make that the working medium of getting back in the compressor 1 is gas, so just finish one and heat circulation.
As shown in Figure 3, be a preferred embodiment connection line legend of the xeothermic device of air of multiple source heat pump drier of the present utility model, the xeothermic device of this air comprises that housing 201, four the plate condensers 202 of monomer, air outlet special fan 203, air inlet air-valve 204, temperature-sensing probe 205, return air inlet 206, electric auxiliary heating device 207, housing warming plate 208, working medium import 209, sender property outlets 210 form.Wherein monomer condensation device 202 comprises built-in copper sleeve 211 and heat radiation aluminium fin 212 compositions, and the size and dimension of four monomer condensation devices 202 is identical, arranges head and the tail by 1,2,3,4 the classification from front to back that puts in order and is in series.Heat-exchange working medium is entered by front end working medium import 209, terminal sender property outlet 210 comes out, in built-in copper sleeve 211, carry out spiral flowing, Cryogenic air is entered by the air inlet air-valve 204 of terminal last row's condenser, through with copper sleeve 211 in the heat exchange of high temperature refrigerant gaseous exchange after, high temperature air blows out from the air outlet special fan 203 of front end first row condenser; And because the flow velocity and the flow of air outlet special fan 203 and air inlet air-valve 204 equal adjustable airs, thereby four monomer condensation device 202 interior air containments constantly change, this convective methods greatly effectively improves heat transfer temperature difference and heat exchange gradient, enhanced heat exchange.
Preferably, as shown in Figure 3, the head in the monomer heat exchanger 202 arranges on the monomer heat exchanger also can be equipped with temperature-sensing probe 205, can be used for controlling the air themperature and the air quantity that blow out.Certainly can also be equipped with return air inlet 206 endways.
Preferably, as shown in Figure 3, described electric auxiliary heating device 207 is installed in monomer condensation device head and the tail two rows' centre position.
Preferably, as shown in Figure 3, must keep 30 centimetres space length between described every adjacent two row's monomer condensation devices.
Preferably, working medium import 209 is contained in first row's monomer condensation device as described in Figure, and sender property outlet 210 is contained in the tail row monomer condensation device.
Above disclosed only is the preferred embodiment of the utility model multiple source heat pump drier, certainly can not limit interest field of the present utility model with this, therefore the equivalent variations of being done according to the utility model claim still belongs to the scope that the utility model is contained.
Claims (9)
1, a kind of multiple source heat pump drier, it comprises compressor, cross valve, evaporimeter, water ring heat exchanger, the xeothermic device of air, gas-liquid separator.It is characterized in that: under the condition of described air source heat exchange, described cross valve is connected with described compressor, described evaporimeter, the xeothermic device of described air, described gas-liquid separator respectively; On the pipeline between described evaporimeter and the xeothermic device of described air, be connected with the auxiliary defrosting device of electricity, at described evaporimeter along being in series with gas-liquid separator, device for drying and filtering, check valve, capillary, liquid-sighting glass and fluid reservoir on the pipeline of the xeothermic device of described air successively; Check valve and capillary are connected in series on the pipeline with after two-way expansion valve is in parallel again.Under the condition of described water source and ground source heat exchange, described compressor is connected with the xeothermic device of described air, described gas-liquid separator, described water ring heat exchanger respectively; At described water ring heat exchanger along being in series with gas-liquid separator, device for drying and filtering, check valve, capillary, liquid-sighting glass and fluid reservoir on the pipeline of the xeothermic device of described air successively; Check valve and capillary are with after two-way expansion valve is in parallel, again on the series pipe.
2, a kind of multiple source heat pump drier as claimed in claim 1 is characterized in that, under the condition of described air source heat exchange, described cross valve is connected with described compressor, described evaporimeter, the xeothermic device of described air, described gas-liquid separator respectively; On the pipeline between described evaporimeter and the xeothermic device of described air, be connected with the auxiliary defrosting device of electricity, at described evaporimeter along being in series with gas-liquid separator, device for drying and filtering, check valve, capillary, liquid-sighting glass and fluid reservoir on the pipeline of the xeothermic device of described air successively; Check valve and capillary are connected in series on the pipeline with after two-way expansion valve is in parallel again.
3, a kind of multiple source heat pump drier as claimed in claim 1 is characterized in that, under the condition of described water source and ground source heat exchange, described compressor is connected with the xeothermic device of described air, described gas-liquid separator, described water ring heat exchanger respectively; At described water ring heat exchanger along being in series with gas-liquid separator, device for drying and filtering, check valve, capillary, liquid-sighting glass and fluid reservoir on the pipeline of the xeothermic device of described air successively; Check valve and capillary are with after two-way expansion valve is in parallel, again on the series pipe.
4, a kind of multiple source heat pump drier as claimed in claim 1, it is characterized in that, the xeothermic device of described air, this device comprise housing, the plate condenser of several monomers, air outlet special fan, air inlet air-valve, return air inlet, working medium import, sender property outlet, electric auxiliary heating device, housing warming plate and temperature-sensing probe.
The plate condenser of described monomer comprises that housing, built-in copper sleeve, heat radiation aluminium fin, working medium connect import, working medium connects outlet and forms; It is characterized in that:
The plate condenser of described several monomers, its size and dimension is identical, press n, n+1, n+2 ..., putting in order of n+m arrange head and the tail from front to back and be in series, and have the interval of certain distance between every adjacent two rows; Wherein, n and m are natural number.
5, a kind of multiple source heat pump drier as claimed in claim 1 is characterized in that, air outlet special fan, working medium import and temperature-sensing probe are equipped with in the front end front in foremost one row's monomer condensation device of the xeothermic device of described air.
6, a kind of multiple source heat pump drier as claimed in claim 1 is characterized in that, air inlet air-valve and sender property outlet are equipped with in the terminal front in row's monomer condensation device backmost of the xeothermic device of described air, and return air inlet is equipped with in its side.
7, a kind of multiple source heat pump drier as claimed in claim 1 is characterized in that, must keep certain space and distance between every adjacent two row's monomer condensation devices of the xeothermic device of described air.
8, a kind of multiple source heat pump drier as claimed in claim 1 is characterized in that, the electric auxiliary heating device of the xeothermic device of described air is installed in monomer condensation device head and the tail two rows' centre position.
9, a kind of multiple source heat pump drier as claimed in claim 1 is characterized in that, the working medium import of the xeothermic device of described air is contained in first row's monomer condensation device, and sender property outlet is contained in the tail row monomer condensation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201351669U CN201364001Y (en) | 2009-03-09 | 2009-03-09 | Composite source heat pump drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201351669U CN201364001Y (en) | 2009-03-09 | 2009-03-09 | Composite source heat pump drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201364001Y true CN201364001Y (en) | 2009-12-16 |
Family
ID=41474671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201351669U Expired - Fee Related CN201364001Y (en) | 2009-03-09 | 2009-03-09 | Composite source heat pump drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201364001Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435047A (en) * | 2010-09-29 | 2012-05-02 | 江苏乐科热工程设备有限公司 | Direct drying method |
| CN102600704A (en) * | 2012-03-22 | 2012-07-25 | 南京航空航天大学 | Mechanical vapour-recompression low-temperature air drier and method thereof |
| CN104251615A (en) * | 2014-09-24 | 2014-12-31 | 泰豪科技股份有限公司 | Heat pump dryer with dehumidifying function |
| CN105115189A (en) * | 2015-09-09 | 2015-12-02 | 宁波天海制冷设备有限公司 | Heat pump for grain drier |
| CN106969541A (en) * | 2017-05-12 | 2017-07-21 | 罗碧贤 | A kind of pair of thermal source dryer |
| CN110108117A (en) * | 2019-05-29 | 2019-08-09 | 云南全克节能技术有限公司 | Heat pump drying material moisture extracts collection device |
-
2009
- 2009-03-09 CN CNU2009201351669U patent/CN201364001Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435047A (en) * | 2010-09-29 | 2012-05-02 | 江苏乐科热工程设备有限公司 | Direct drying method |
| CN102600704A (en) * | 2012-03-22 | 2012-07-25 | 南京航空航天大学 | Mechanical vapour-recompression low-temperature air drier and method thereof |
| CN104251615A (en) * | 2014-09-24 | 2014-12-31 | 泰豪科技股份有限公司 | Heat pump dryer with dehumidifying function |
| CN105115189A (en) * | 2015-09-09 | 2015-12-02 | 宁波天海制冷设备有限公司 | Heat pump for grain drier |
| CN106969541A (en) * | 2017-05-12 | 2017-07-21 | 罗碧贤 | A kind of pair of thermal source dryer |
| CN110108117A (en) * | 2019-05-29 | 2019-08-09 | 云南全克节能技术有限公司 | Heat pump drying material moisture extracts collection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201364001Y (en) | Composite source heat pump drier | |
| CN106705590B (en) | Heat pump type water heating drying system | |
| CN202149545U (en) | Fresh air fan set with heat recovery and humidification functions | |
| CN102269466A (en) | Fresh air handling unit | |
| CN101566426B (en) | High temperature air source heat pump hot-air fan used for drying | |
| CN103307866A (en) | High-temperature heat pump drying unit for heat recovery and automatic dehumidification | |
| CN105135739A (en) | Multifunctional heat pump type evaporative condensing air-conditioning unit | |
| CN104748442A (en) | Air source heat pump device | |
| CN205897575U (en) | Solar energy air source heat pump trigeminy supplies system | |
| CN203572174U (en) | High-temperature heat pump dryer set for heat recovery and automatic dehumidification | |
| CN202885340U (en) | Energy supply device of high-efficiency energy tower | |
| CN201034400Y (en) | Defrosting device of air source heat pump water heater | |
| CN103411355B (en) | Evaporative condenser separate type Ji Leng thermal-arrest refrigeration station | |
| CN205119549U (en) | Multi -functional heat pump type evaporation formula condensation air conditioning unit | |
| CN202149571U (en) | Fresh air handling unit | |
| CN113154721A (en) | Novel energy-saving water chilling unit | |
| CN103307805B (en) | Trigeneration heat pump system | |
| CN201285024Y (en) | Dual-effect water-heating steamer group by solar energy and air energy | |
| CN202770081U (en) | Solar auxiliary thermal source tower heat pump system | |
| CN103575758A (en) | Freeze-thaw cycle testing machine | |
| CN209622910U (en) | A kind of air source heat pump heating system | |
| CN202853106U (en) | Air energy water heater | |
| CN203396151U (en) | Triple co-generation heat pump system | |
| CN100529580C (en) | Double-air line hot-pumping water heater | |
| CN202511384U (en) | Top air conditioner for passenger vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Qian Guoxin Document name: Notification to Pay the Fees |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091216 Termination date: 20120309 |