CN201293488Y - Frosting free air source heat pump - Google Patents
Frosting free air source heat pump Download PDFInfo
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- CN201293488Y CN201293488Y CNU200820161843XU CN200820161843U CN201293488Y CN 201293488 Y CN201293488 Y CN 201293488Y CN U200820161843X U CNU200820161843X U CN U200820161843XU CN 200820161843 U CN200820161843 U CN 200820161843U CN 201293488 Y CN201293488 Y CN 201293488Y
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Abstract
An air source heat pump free of frost formation relates to a heat source heat pump absorbing the heat from the air by means of a solution. A heat pump heat-production method for solution regeneration by a reverse osmosis membrane and a device thereof are provided. The device comprises a refrigerant circulation loop, a solution circulation loop and a cold/hot water loop. The refrigerant circulation loop comprises a compressor, a four-way valve, a first heat exchanger, a first check valve, a second check valve, a third check valve, a fourth check valve, a liquid container, a filter, an electronic expansion valve, a second heat exchanger, a gas and liquid separator and correlated joint pipes. The solution circulation loop is divided into a first solution loop and a second solution loop. The utility model solves the problem that compared with the water cooling unit the air source heat pump has low refrigeration performance coefficient in summer and frosts in winter operation and the utility model realizes the water cooling refrigeration in summer and absorbs heat from the air by means of solution in winter.
Description
Technical field
The utility model relates to and a kind ofly absorbs heat as source heat pump heat from air by solution, utilizes reverse osmosis membrane to carry out the heat pump heating method of solution regeneration simultaneously and realizes the device of this method, the technical field that belongs to the refrigerated air-conditioning system design and make.
Background technology
Because petering out of fossil energy, energy problem has become one of subject matter of restriction global evolution.Along with expanding economy and growth in the living standard, freeze summer, and Winter heat supply becomes the necessary guarantee of people's life, working and learning.Heat pump apparatus of air source has energy-conservation, and is easy to use, can provide summer cold water, winter that advantages such as hot water are provided, and is used widely.But air source heat pump exists refrigerating efficiency in summer not high (comparing the water-cooled handpiece Water Chilling Units), deficiencies such as the easy frosting of winter operation evaporator surface.The frosting of winter operation evaporator surface will cause the heat exchange thermal resistance of cold-producing medium and air in the evaporimeter to increase, and the heat exchange amount descends, and heat pump performance also decreases.Along with thickening of frost layer, heat pump is cisco unity malfunction, even burns compressor.Not only need to interrupt heat supply and heat pump defrosted, also will consume a large amount of heats simultaneously, reduced the reliability and the heating efficiency of heat pump.
Therefore, solve air source heat pump coefficient of performance of refrigerating in summer lower (with water-cooled handpiece Water Chilling Units ratio), there are problems such as frosting phenomenon in winter operation, and designing a kind of new and effective heat pump assembly becomes the technical barrier that those skilled in the art press for solution.
Summary of the invention
Technical problem: the purpose of this utility model is to solve air source heat pump coefficient of performance of refrigerating in summer lower (with water-cooled handpiece Water Chilling Units ratio), there is the problem of frosting phenomenon in winter operation, proposing a kind of the realization water-cooled refrigeration in summer, winter absorbs heat from air by solution, and can avoid the heat pump apparatus of air source of frosting.
Technical scheme: the utility model can be avoided in the heat pump apparatus of air source of frosting, comprises refrigerant circulation loop, solution circulation loop and hot and cold water loop.Refrigerant circulation loop is made up of compressor, cross valve, first heat exchanger, first check valve, second check valve, the 3rd check valve, the 4th check valve, reservoir, filter, electric expansion valve, second heat exchanger, gas-liquid separator and relevant connection pipeline thereof.The first input end of the output termination cross valve of compressor, the first output termination, the first heat exchanger first input end of cross valve, first heat exchanger, first output connects the input of reservoir by first check valve, first heat exchanger, first output is also by first check valve simultaneously, second check valve connects the second heat exchanger first input end, the output of reservoir connects the electric expansion valve input by filter, the electric expansion valve output connects the second heat exchanger first input end by the 4th check valve, the output of electric expansion valve also connects first heat exchanger, first output by the 3rd check valve simultaneously, second heat exchanger, the first output termination cross valve, second input, the cross valve second output termination gas-liquid separator input, and the input of the output termination compressor of gas-liquid separator; Solution loop is divided into first solution loop and second solution loop.First solution loop is made up of cooling tower, the first solution holder, first-hand valve, second-hand's valve, the 3rd hand valve, first water pump, second heat exchanger and relevant connection pipeline thereof; Second solution loop is made up of the first solution holder, first magnetic valve, second water pump, the 3rd heat exchanger, filter, high-pressure pump, film permeability apparatus, the second solution holder, solution control valve and relevant connection pipeline thereof.The cooling tower outlet is divided into two-way in first solution loop, the first-hand valve of leading up to connects the first solution holder, first input port, the first solution holder, first delivery outlet connects the inlet of first water pump by the 3rd hand valve, and the second-hand's valve of leading up in addition also connects the inlet of first pump.First exit of pump connects second heat exchanger, second input, and second heat exchanger, second output links to each other with the input port of cooling tower.The first solution holder, second output connects the second water pump input through first magnetic valve in second solution loop, second water pump output termination the 3rd heat exchanger first input end, the 3rd heat exchanger first output is taken over the filter device input, filter output termination high-pressure pump input, high-pressure pump output termination film permeability apparatus input, the film permeability apparatus output termination second solution holder input, the second solution holder output connects the first solution holder, second input by solution control valve, thereby constitutes a loop.The hot and cold water loop is made up of first heat exchanger, the 3rd water pump, second magnetic valve, the 3rd heat exchanger and relevant connection pipeline thereof.The input of first heat exchanger, the second output termination the 3rd water pump in the hot and cold water loop, the outlet of the 3rd water pump is divided into two-way, one tunnel hot and cold water water side as heat pump assembly, second magnetic valve of leading up in addition connects the 3rd heat exchanger second input, the 3rd heat exchanger second output termination first heat exchanger second input.
Beneficial effect:
1, the heat pump apparatus of air source of the frosting avoided that the utility model proposes at the coefficient of performance that can have the water-cooled handpiece Water Chilling Units summer, is compared existing air source heat pump, has the higher coefficient of performance.
When 2, moving in the winter time by solution draw heat from air, evaporator surface can frosting, thoroughly solve inevitably frosting problem of air source heat pump institute, improved the coefficient of performance and the heating efficiency of heat pump, increased the life-span and the reliability of system simultaneously.
3, utilizing reverse osmosis membrane to carry out solution regeneration compares existing solution regeneration method (thermal regeneration) and has energy-conservation, efficient and compact characteristics.
4, solution makes heat pump can be suitable for various high humidity low temp areas, and has higher performance based on film infiltration regeneration, no longer is subjected to the restriction of solution regeneration thermal source.
Description of drawings
Accompanying drawing 1 is the bright heat pump apparatus of air source schematic diagram of avoiding frosting of utility model.
Have among the above figure: compressor 1; Cross valve 2; Cross valve first input end 2a; The cross valve first output 2b; The cross valve second input 2c; The cross valve second output 2d; First heat exchanger 3; The first heat exchanger first input end 3a; First heat exchanger, the first output 3b; First heat exchanger, the second input 3c; First heat exchanger, the second output 3d; First check valve 4; Second check valve 5; Reservoir 6; Filter 7; Electric expansion valve 8; The 3rd check valve 9; The 4th check valve 10; Second heat exchanger 11; The second heat exchanger first input end 11a; Second heat exchanger, the first output 11b; Second heat exchanger, the second input 11c; Second heat exchanger, the second output 11d; Gas-liquid separator 12; Cooling tower 13; First-hand valve 14; Second-hand's valve 15; The 3rd hand valve 16; The first solution holder 17; The first solution holder first input end 17a; The first solution holder, the first output 17b; The first solution holder, the second input 17c; The first solution holder, the second output 17d; First water pump 18; First magnetic valve 19; Second water pump 20; The 3rd heat exchanger 21; The 3rd heat exchanger first input end 21a; The 3rd heat exchanger first output 21b; The 3rd heat exchanger second input 21c; The 3rd heat exchanger second output 21d; Filter 22; High-pressure pump 23; Film permeability apparatus 24; The second solution holder 25; Solution control valve 26; The 3rd water pump 27; Second magnetic valve 28.
The specific embodiment
1 further specify the specific embodiment of the present utility model in conjunction with the accompanying drawings: the utility model can avoid the heat pump apparatus of air source of frosting to comprise refrigerant circulation loop, solution circulation loop and hot and cold water loop.Concrete method of attachment is the output termination cross valve first input end 2a of compressor 1, the cross valve first output 2b meets the first heat exchanger first input end 3a, first heat exchanger, the first output 3b connects the input of reservoir 6 by first check valve 4, first heat exchanger, the first output 3b is also by first check valve 4 simultaneously, second check valve 5 meets the second heat exchanger first input end 11a, the output of reservoir 6 connects electric expansion valve 8 inputs by filter 7, electric expansion valve 8 outputs meet the second heat exchanger first input end 11a by the 4th check valve 10, the output of electric expansion valve 8 also meets first heat exchanger, the first output 3b by the 3rd check valve 9 simultaneously, second heat exchanger, the first output 11b meets the cross valve second input 2c, the cross valve second output 2d connects the input of gas-liquid separator 12, and the input of the output termination compressor 1 of gas-liquid separator 12.
Solution circulation loop comprises first solution loop and second solution loop.Cooling tower 13 outlets are divided into two-way in first solution loop, the first-hand valve 14 of leading up to meets the first solution holder, the first input port 17a, the first solution holder, the first delivery outlet 17b connects the inlet of first water pump 18 by the 3rd hand valve 16, and the second-hand's valve 15 of leading up in addition also connects the inlet of first pump 18.18 outlets of first water pump meet second heat exchanger, the second input 11c, and second heat exchanger, the second output 11d links to each other with the input port of cooling tower 13.The first solution holder, the second output 17d connects second water pump, 20 inputs through first magnetic valve 19 in second solution loop, second water pump, 20 output terminations the 3rd heat exchanger first input end 21a, the 3rd heat exchanger first output 21b takes over filter device 22 inputs, filter 22 output termination high-pressure pumps 23 inputs, high-pressure pump 23 output termination film permeability apparatus 24 inputs, the film permeability apparatus 24 output terminations second solution holder 25 inputs, the second solution memory, 25 outputs meet the first solution holder, the second input 17c by solution control valve 26.
First heat exchanger, the second output d connects the input of the 3rd water pump 27 in the hot and cold water loop, the outlet of the 3rd water pump 27 is divided into two-way, one tunnel hot and cold water water side as heat pump assembly, second magnetic valve 28 of leading up in addition meets the 3rd heat exchanger second input 21c, and the 3rd heat exchanger second output 21d meets first heat exchanger, the second input 3c.
Air source solution heat pump refrigerating operaton in summer based on reverse osmosis membrane solution regeneration: the refrigerant gas in the gas-liquid separator 12 is sucked by compressor 1, compression and discharge back enter in second heat exchanger 11 by cross valve 2 carries out heat exchange with cooling water, condensation of refrigerant is emitted heat and is become liquid, again successively through second check valve 5, reservoir 6, filter 7, electric expansion valve 8 backs are become the gas-liquid two-phase of low-temp low-pressure by throttling, enter first heat exchanger 3 through the 3rd check valve 9, the cold-producing medium evaporation of in first heat exchanger 3, absorbing heat, produce cold water, cold-producing medium evaporates the back fully and comes out from first heat exchanger 3, enter gas-liquid separator 12 by cross valve 2, being inhaled into compressor 1 once more compresses, finish kind of refrigeration cycle, produce cold water.Be full of cooling water in cooling tower 13, first water pump 18, second heat exchanger 11 and the connecting line thereof in the solution circulation loop at this moment, remainder all is a solution.After cooling water comes out from cooling tower 13 in first solution loop, directly enter first water pump 18 (this moment, first-hand valve 14 and the 3rd hand valve 16 were closed) by second-hand's valve 15, after 18 pressurizations of first water pump, cooling water enters in second heat exchanger 11, absorb heat condensation of refrigerant is become liquid, enter cooling tower 13 after self temperature raises and carry out the wet exchange of heat with air, after cooling water temperature reduces once more from cooling tower 13 outflows.In the hot and cold water loop, second magnetic valve 28 cuts out, the 3rd heat exchanger 21 is not worked, chilled water enters first heat exchanger 3 from heat pump water chiller-heater backwater end, chilled water in first heat exchanger 3 with the cold-producing medium heat exchange, emit heat, self temperature reduces, enter the 3rd water pump 27 after coming out, after 27 pressurizations of the 3rd water pump, chilled water is sent from the heat pump water chiller-heater water side.
During based on the operation of the air source solution heat pump winter heating of reverse osmosis membrane solution regeneration: in the refrigerant circulation loop, refrigerant gas is sucked by compressor 1 in the gas-liquid separator 12, discharge the compression back, enter first heat exchanger 3 through cross valve 2, cold-producing medium is emitted heat in first heat exchanger 3, produce hot water, simultaneously self be condensed into liquid, then successively by first check valve 4, reservoir 6, filter 7, electric expansion valve 8, entered in second heat exchanger 11 through the 4th check valve 10 with gas-liquid two-phase after the electric expansion valve 8 throttling step-downs, in second heat exchanger 11, evaporate heat absorption, cold-producing medium evaporates the back fully and enters gas-liquid separator 12 from second heat exchanger 11 cross valve 2 that comes out to flow through, sucked by compressor 1 once more at last, again be compressed, so circulation.First solution loop and second solution loop are all charging solution in the solution circulation loop at this moment.Enter the first solution holder 17 (second-hand's valve 15 cuts out at this moment) by first-hand valve 14 after solution comes out from cooling tower 13 in first solution loop, again through entering first water pump 18 behind the 3rd hand valve 16, solution enters second heat exchanger 11 after 18 pressurizations of first water pump, carry out heat exchange with cold-producing medium, emit heat, self temperature reduces, solution enters cooling tower 13 after second heat exchanger 11 comes out, (solution temperature is lower than air themperature to solution, the partial pressure of water vapor of solution is smaller or equal to airborne partial pressure of water vapor) in cooling tower 13, carry out the wet exchange of heat with air, solution absorbs heat from air, water in air steam condenses in solution, the temperature of solution raises, and concentration decreases, and flows out from cooling tower 13 then to participate in circulation once more.In second solution loop, solution concentration is lower than down in limited time in the first solution holder 17, the second solution loop work, solution flows out from the first solution holder 17, and through entering the 3rd heat exchanger 21 behind first magnetic valve 19, second water pump 20, solution carries out heat exchange with hot water therein, self temperature raises, enter filter 22 then, various impurity and particle in the solution are filtered, satisfy the inlet requirement of film permeability apparatus 24.After being pressurized through high-pressure pump 23 after solution comes out from filter 22, enter film permeability apparatus 24, under the effect of reverse osmosis membrane therein of the solution of high pressure, hydrone is separated from solution through reverse osmosis membrane in the solution, and flow out from the outlet of the pure water of film permeability apparatus 24, thereby realize the lifting of solution concentration, the highly concentrated solution that comes out from film permeability apparatus 24 enters the second solution holder 25, concentrated solution enters the first solution holder 17 by solution control valve 26 again, thereby realizes the adjusting of solution concentration in the first solution holder 17.In the hot and cold water loop, hot water in first heat exchanger 3 with the cold-producing medium heat exchange, temperature raises, after coming out from first heat exchanger 3, when second solution loop was worked, second magnetic valve 28 was opened, hot water is divided into two-way after through the 3rd water pump 27, and one the road flows out from the heat pump water chiller-heater water side; Other one the tunnel, enter the 3rd heat exchanger 21 through second magnetic valve 28, hot water therein with the solution heat exchange, emit heat, temperature reduces, hot water enters first heat exchanger 3 from the 3rd heat exchanger 21 back of coming out with the backwater of heat pump water chiller-heater backwater end; When second solution loop is not worked, second magnetic valve 28 cuts out, hot water directly flows out from the heat pump water chiller-heater water side after through the 3rd water pump 27, hot water will return heat pump from heat pump water chiller-heater backwater end after lowering the temperature through air conditioning terminal, enter first heat exchanger 3 and carry out heat exchange once more, so circulation with cold-producing medium.
From based on the air source solution heat pump summer operation of reverse osmosis membrane solution regeneration as can be seen, the cold water unit of heat pump and light water flow process is similar, and heat pump can reach the COP of water-cooled handpiece Water Chilling Units, compares air-cooled heat pump and has the higher coefficient of performance.When moving in the winter time based on the air source solution heat pump of reverse osmosis membrane solution regeneration, solution in cooling tower from air the key of draw heat be: a, the freezing point temperature that guarantees solution are lower than the minimum temperature that the solution that participates in circulation may occur, thereby guarantee that solution solidification phenomenon can not occur in the operation of heat pump process, the present invention can realize by the solution concentration of regulating in the initial adding solution circulation loop; B, the solution temperature that enters cooling tower are lower than air themperature, thereby the assurance heat is passed to solution from air, the present invention regulates the liquid inventory that enters second heat exchanger by the frequency (promptly controlling the rotating speed of water pump) of control first water pump, thereby guarantee that the solution temperature that enters cooling tower is lower than air themperature (when solution temperature is high, reduce liquid inventory, when solution temperature is too low, increase liquid inventory); Partial pressure of water vapor is less than or equal to airborne partial pressure of water vapor in c, the solution, make water vapour from air, enter solution, water recovery is emitted heat and is given solution (the partial pressure difference of water vapour is the driving force of water vapor diffusion), the size of partial pressure of water vapor depends on the concentration of solution in solution temperature one timing solution, and the concentration of control solution can realize the control of partial pressure of water vapor in the solution.The present invention is when concentration in the first solution holder is low, start second solution loop, with the solution in the first solution holder through film permeability apparatus in second solution loop, by the reverse osmosis membrane effect in the film permeability apparatus, moisture in the solution is separated, thereby realize the raising of solution concentration, solution with high concentration deposits the second solution holder in again, by the control solution control valve, adjusting enters the concentrated solution amount in the first solution holder, thereby realizes the control of solution concentration in the first solution holder; D, in the film permeability apparatus, in certain temperature range, the water yield of reverse osmosis membrane is directly proportional with the temperature of solution, 1 ℃ of the every decline of temperature, water yield decline 3-5% can destroy the structure of reverse osmosis membrane when simultaneously the inlet solution temperature of reverse osmosis membrane is less than 5 ℃; And solution temperature is when low, and it is big that the viscosity of solution becomes, and the flow resistance of solution will increase.When moving in the winter time, solution is draw heat from air, and solution temperature must be lower, even is lower than 0 ℃.Therefore the 3rd heat exchanger is set in second solution loop, and when second solution loop is worked, in the 3rd heat exchanger solution by with the hot water heat exchange, guarantee that the temperature when solution enters filter and film permeability apparatus is higher than 20 ℃.
When heat pump switches to summer during refrigerating operaton from winter heating operation, the solution in first solution loop all can be recovered in the first solution memory, close first-hand valve and the 3rd hand valve after, get final product filling water in first solution loop again.When heat pump refrigerating operaton in summer switches to winter heating when operation, cooling water in original first solution loop is drained, close second-hand's valve, open first-hand valve and the 3rd hand valve, emit that solution gets final product in the first solution holder.
Claims (1)
1. the heat pump apparatus of air source that can avoid frosting is characterized in that this device comprises refrigerant circulation loop, solution circulation loop and hot and cold water loop;
Wherein, refrigerant circulation loop comprises compressor (1), cross valve (2), first heat exchanger (3), first check valve (4), second check valve (5), the 3rd check valve (9), the 4th check valve (10), reservoir (6), filter (7), electric expansion valve (8), second heat exchanger (11), gas-liquid separator (12) and relevant connection pipeline thereof; The output termination cross valve first input end (2a) of compressor (1), cross valve first output (2b) connects the first heat exchanger input (3a), first heat exchanger, first output (3b) connects the input of reservoir (6) by first check valve (4), first heat exchanger, first output (3b) is also by first check valve (4) simultaneously, second check valve (5) connects the second heat exchanger first input end (11a), the output of reservoir (6) is by filter (7), electric expansion valve (8), the 4th check valve (10) connects the second heat exchanger first input end (11a), the output of electric expansion valve (8) also connects first heat exchanger, first output (3b) by the 3rd check valve (9) simultaneously, second heat exchanger, first output (11b) connects cross valve second input (2c), cross valve second output (2d) connects gas-liquid separator (12) input, and the input of the output termination compressor (1) of gas-liquid separator (12);
Solution circulation loop is divided into first solution loop and second solution loop; First solution loop comprises cooling tower (13), the first solution holder (17), first-hand valve (14), second-hand's valve (15), the 3rd hand valve (16), first water pump (18), second heat exchanger (11) and relevant connection pipeline thereof; Second solution loop comprises the first solution holder (17), first magnetic valve (19), second water pump (20), the 3rd heat exchanger (21), filter (22), high-pressure pump (23), film permeability apparatus (24), the second solution holder (25), solution control valve (26) and relevant connection pipeline thereof; Cooling tower in first solution loop (13) outlet is divided into two-way, the first-hand valve (14) of leading up to connects the first solution holder, first input port (17a), the first solution holder, first delivery outlet (17b) connects the inlet of first water pump (18) by the 3rd hand valve (16), and the second-hand's valve (15) of leading up in addition of cooling tower in first solution loop (13) outlet connects the inlet of first pump (18); First water pump (18) outlet connects second heat exchanger, second input (11c), and second heat exchanger, second output (11d) links to each other with the input port of cooling tower (13); The first solution holder, second output (17d) connects the first solution holder, second input (17c) through first magnetic valve (19), second water pump (20), the 3rd heat exchanger (21), filter (22), high-pressure pump (23), film permeability apparatus (24), the second solution holder (25), solution control valve (26) in second solution loop, thereby constitutes a loop;
The hot and cold water loop comprises first heat exchanger (3), the 3rd water pump (27), second magnetic valve (28), the 3rd heat exchanger (21) and relevant connection pipeline thereof; First heat exchanger, second output (3d) connects the input of the 3rd water pump (27) in the hot and cold water loop, the outlet of the 3rd water pump (27) is divided into two-way, one tunnel hot and cold water water side as heat pump assembly, second magnetic valve (28) of leading up in addition connects the 3rd exchanger heat water inlet (21c), and the 3rd exchanger heat water out (21d) connects first heat exchanger, second input (3c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820161843XU CN201293488Y (en) | 2008-10-15 | 2008-10-15 | Frosting free air source heat pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820161843XU CN201293488Y (en) | 2008-10-15 | 2008-10-15 | Frosting free air source heat pump |
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| CN201293488Y true CN201293488Y (en) | 2009-08-19 |
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| CNU200820161843XU Expired - Fee Related CN201293488Y (en) | 2008-10-15 | 2008-10-15 | Frosting free air source heat pump |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776353A (en) * | 2010-02-10 | 2010-07-14 | 东南大学 | Cooling tower-based solution type cold and hot water unit |
| CN102128528A (en) * | 2011-03-30 | 2011-07-20 | 华南理工大学 | Phase change heat accumulating defrosting system for air source heat pump water heater |
| CN103900310A (en) * | 2014-04-17 | 2014-07-02 | 东南大学 | Solution desiccant system and method for preventing air source heat pump water heater from frosting |
| WO2016146084A1 (en) * | 2015-03-17 | 2016-09-22 | 黄国和 | All-weather solar energy water source heat pump air conditioning system |
| CN106196779A (en) * | 2016-07-27 | 2016-12-07 | 南京理工大学 | A kind of solution defrosting freezing regeneration air source source pump |
| CN106642851A (en) * | 2015-11-03 | 2017-05-10 | 青岛海尔空调电子有限公司 | Air conditioning system capable of preventing frosting of outdoor heat exchanger |
| CN109469990A (en) * | 2018-10-08 | 2019-03-15 | 东南大学 | The air source heat pump and its working method with disengaged defroster based on super-hydrophobic finned heat exchanger |
| CN106196846B (en) * | 2015-04-30 | 2020-09-08 | 青岛海尔智能技术研发有限公司 | Refrigerator with a door |
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2008
- 2008-10-15 CN CNU200820161843XU patent/CN201293488Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776353A (en) * | 2010-02-10 | 2010-07-14 | 东南大学 | Cooling tower-based solution type cold and hot water unit |
| CN102128528A (en) * | 2011-03-30 | 2011-07-20 | 华南理工大学 | Phase change heat accumulating defrosting system for air source heat pump water heater |
| CN102128528B (en) * | 2011-03-30 | 2012-07-18 | 华南理工大学 | Phase change heat accumulating defrosting system for air source heat pump water heater |
| CN103900310A (en) * | 2014-04-17 | 2014-07-02 | 东南大学 | Solution desiccant system and method for preventing air source heat pump water heater from frosting |
| WO2016146084A1 (en) * | 2015-03-17 | 2016-09-22 | 黄国和 | All-weather solar energy water source heat pump air conditioning system |
| US10436482B2 (en) | 2015-03-17 | 2019-10-08 | Hunan Dongyou Water Vapor Energy Energy-Saving CO., Ltd | All-weather solar water source heat pump air conditioning system |
| CN106196846B (en) * | 2015-04-30 | 2020-09-08 | 青岛海尔智能技术研发有限公司 | Refrigerator with a door |
| CN106642851A (en) * | 2015-11-03 | 2017-05-10 | 青岛海尔空调电子有限公司 | Air conditioning system capable of preventing frosting of outdoor heat exchanger |
| CN106642851B (en) * | 2015-11-03 | 2019-04-12 | 青岛海尔空调电子有限公司 | A kind of air-conditioning system that can prevent outdoor heat exchanger frosting |
| CN106196779A (en) * | 2016-07-27 | 2016-12-07 | 南京理工大学 | A kind of solution defrosting freezing regeneration air source source pump |
| CN109469990A (en) * | 2018-10-08 | 2019-03-15 | 东南大学 | The air source heat pump and its working method with disengaged defroster based on super-hydrophobic finned heat exchanger |
| CN109469990B (en) * | 2018-10-08 | 2020-12-08 | 东南大学 | Air source heat pump with separation type defrosting device based on super-hydrophobic fin heat exchanger and working method thereof |
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