CN104654572A - Air-source heat pump water heater - Google Patents
Air-source heat pump water heater Download PDFInfo
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- CN104654572A CN104654572A CN201410802832.5A CN201410802832A CN104654572A CN 104654572 A CN104654572 A CN 104654572A CN 201410802832 A CN201410802832 A CN 201410802832A CN 104654572 A CN104654572 A CN 104654572A
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Abstract
The invention relates to the field of heat pump equipment and particularly relates to an air-source heat pump water heater. Aiming at solving the problem that an air-source heat pump water heater in a wet-cold region is easy to be frosted, and the air-source heat pump water heater provided by the invention is additionally provided with a second heater in a position opposite to an evaporator of the existing air-source heat pump water heater, so that one part of hot water generated by the air-source heat pump water heater exchanges heat with air which is to enter the evaporator in the second heater, so that the temperature of the air entering the evaporator is increased, and the problem of frosting in winter in the wet-cold region can be effectively solved; furthermore, the air-source heat pump water heater is low in cost and good in effect. The air-source heat pump water heater provided by the invention can be widely applied to heating water systems in the wet-cold region in winter.
Description
Technical field
The present invention relates to heat-pump apparatus field, be specifically related to a kind of air-source heat pump hot water.
Background technology
Air-source heat pump hot water is using air as thermal source.Due to air-source, unlike water source, there is larger sectional center sex-limited, and therefore its range of application widely.Air-source heat pump hot water, primarily of compositions such as compressor, evaporimeter, condenser, blower fan, economizers, with inverse Carnot cycle for principle, adopts electrical energy drive.Compressor sucks low temperature low pressure gas cold-producing medium from evaporimeter, refrigerant compression is become high-temperature high-pressure gas refrigerant, and high temperature and high pressure gaseous refrigerant enters condenser, is condensed into cryogenic liquid and release heat with water after carrying out heat exchange, water absorbs the heat of release, and temperature constantly rises.The high pressure low temperature liquid be condensed, after expansion valve reducing pressure by regulating flow, absorbs surrounding air heat, flashes to low temperature low pressure gas in evaporimeter, and low temperature low pressure gas enters in compressor and compresses.This process iterative cycles, obtained hot water.But in clammy area, when outdoor temperature is low to moderate 2 ~-2 DEG C, the easy frosting of evaporimeter, causes heating efficiency to decline, especially In Middle And Lower Reaches of Changjiang River, frosting is frequent except revealing, and the problem that air-source heat pump hot water heating efficiency declines is more serious.Existing low form air-source heat pump hot water generally cannot normally run in lower than the environment of-10 DEG C.Therefore, the air-source heat pump hot water how exploitation reduces frosting becomes the matter of great urgency, and product development successfully will produce good market effect.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of air-source heat pump hot water of not easily frosting is provided.
Air-source heat pump hot water provided by the invention, comprises water tank 1, primary heater 2, water pump 5 between first outlet 3 and the first entrance 4 of primary heater 2 of water tank 1, compressor 9, evaporimeter 12, bypass line 16 between water pump 5 and primary heater 2, the secondary heater 18 that is positioned at the magnetic valve 17 on bypass line 16 and is oppositely arranged with evaporimeter 12; Wherein, the second outlet 6 of primary heater 2 is connected with the second entrance 7 of water tank 1; 3rd outlet 10 of compressor 9 is connected with the first refrigerant inlet 8 of primary heater 2, first refrigerant outlet 15 of primary heater 2 is connected with the second refrigerant entrance 14 of evaporimeter 12, and the second refrigerant outlet 13 of evaporimeter 12 is connected with the 3rd entrance 11 of compressor 9; Magnetic valve 17 is connected with the 4th entrance 19 of secondary heater 18, and the 4th outlet 20 of secondary heater 18 is connected with the 5th entrance 21 of water tank.
Preferably, above-mentioned air-source heat pump hot water also comprises economizer 22, first refrigerant outlet 8 of primary heater 2 is connected with the 6th entrance 23 of economizer 22, the second refrigerant outlet 13 of evaporimeter 12 is connected with the 6th entrance 23 of economizer 22, and the 5th outlet 24 of economizer 22 is connected with the gas supplementing opening 25 of compressor 9.
Preferably, compressor 9 is paddy wheel tonifying Qi increasing enthalpy compressor.
Preferably, evaporimeter 12 three combs.
Preferably, hydrophilic aluminium platinum selected by evaporimeter 12, in the nondecreasing situation of guarantee overall heat exchanger fin heat exchange area, strengthen fin interval width.
Preferably, connect with copper pipe between each parts.
Air-source heat pump hot water provided by the invention, the position relative at the evaporimeter of existing air-source heat pump hot water increases secondary heater, a part in the hot water that air-source heat pump hot water is produced with will enter air heat-shift in secondary heater of evaporimeter, improve the temperature entering the air of evaporimeter, effectively can solve the frosting problem of clammy regional winter air source heat pump hot water, and cost is low, effective.Air-source heat pump hot water adopts accurate two-stage compression, and the economizer set up can improve cold-producing medium degree of supercooling, adds the ability of Systemic absorption air middle-low grade heat; Compressor selects tonifying Qi to increase enthalpy compressor, increases enthalpy operating mode, increase the cold medium flux of evaporimeter, can run well and heat in low temperature, ultra-low temperature surroundings when environment temperature enters tonifying Qi automatically lower than system when 0 DEG C; Increase axial flow blower and increase the comb quantity of evaporimeter, when changing three combs into by two traditional combs, the heat exchange area of evaporimeter increases, thus decreases the air heat-exchange temperature difference of evaporimeter, requirement to evaporating temperature when reducing winter heating, enhances evaporation and heat-exchange effect; The fin of evaporimeter is made up of hydrophilic aluminium platinum, increase the interval between fin, total heat exchange area does not reduce, fin interval width is strengthened in the nondecreasing situation of the guarantee total heat exchange area of heat exchanger, make air-source heat pump hot water under equal outdoor temperature and damp condition can not frosting or reduce frosting degree, improve the frosting resistance ability of air-source heat pump hot water.
Air-source heat pump hot water provided by the invention, Energy Efficiency Ratio can be made under 0 DEG C of environment temperature to improve 10%, can nearly 13% be improved under-5 DEG C of environment temperatures, can nearly 27% be improved under-10 DEG C of environment temperatures, and the hot water preparing that also can run well under the low temperature environment of-15 DEG C; In the temperature range of clammy regional 2 ~-2 DEG C of easy frostings, can defrost rapidly when frosting problem appears in evaporimeter, effectively can solve the clammy regional air-source heat pump hot water defrosting difficult problem in the middle and lower reach of Yangtze River, be convenient to air-source heat pump hot water promoting the use of in clammy area in winter, south.For performance and the investment relation problem of unit during solution cryogenic refrigeration, the present invention adopts the air-source heat pump hot water of accurate two-stage compression.This air-source heat pump hot water is for the worst cold case of evaporating temperature within the scope of-15 DEG C ~-40 DEG C under worst cold case, and heating capacity can be made to increase 17% ~ 40%, and the coefficient of performance improves 6% ~ 27%, and energy-saving effect is remarkable.Under mark condition condition, during COP value 3.6 ,-10 ~-15 DEG C of operating modes, COP value is in about 1.8 (under the same conditions, COP is about 1.5 or can normally run just good for the air-source heat pump hot water of prior art).When under standard condition, (environment dry, wet-bulb temperature be respectively 20 DEG C and 15 DEG C) heats, heating effect is very good, and COP value is very high.Under this operating mode, water is heated to 20 DEG C from 15 DEG C, average COP value reaches 5.7; Water is heated to 55 DEG C from 50 DEG C, and average COP value also can reach 2.8; 2. under worst cold case (environment dry, wet-bulb temperature be respectively-10 DEG C and-11 DEG C), air-source heat pump hot water can run well and heat, and COP value is minimum is 1.3, can reach 1.8; 3. under clammy operating mode (environment wet and dry bulb temperature is respectively 2 DEG C and 1 DEG C, relative humidity nearly 90% time), air-source heat pump hot water is frosting not easily, can hot water preparing.
Accompanying drawing explanation
Fig. 1 is the structural representation of the air-source heat pump hot water of one embodiment of the present of invention.
Fig. 2 is the structural representation of the air-source heat pump hot water of an alternative embodiment of the invention.
Detailed description of the invention
For the ease of understanding the present invention, below in conjunction with Figure of description, the invention will be further described.
Embodiment is see Fig. 1, and air-source heat pump hot water comprises water tank 1, primary heater 2, water pump 5 between first outlet 3 and the first entrance 4 of primary heater 2 of water tank 1, compressor 9, evaporimeter 12, bypass line 16 between water pump 5 and primary heater 2, the secondary heater 18 that is positioned at the magnetic valve 17 on bypass line 16 and is oppositely arranged with evaporimeter 12.Second outlet 6 of primary heater 2 is connected with the second entrance 7 of water tank 1.Water in water tank 1 enters primary heater 2 through water pump 5, and the water after heating gets back to water tank 1, circulating-heating like this from the second outlet 6 of primary heater 2.3rd outlet 10 of compressor 9 is connected with the first refrigerant inlet 8 of primary heater 2, first refrigerant outlet 15 of primary heater 2 is connected with the second refrigerant entrance 14 of evaporimeter 12, and the second refrigerant outlet 13 of evaporimeter 12 is connected with the 3rd entrance 11 of compressor 9.Magnetic valve 17 is connected with the 4th entrance 19 of secondary heater 18, and the 4th outlet 20 of secondary heater 18 is connected with the 5th entrance 21 of water tank.When the surface temperature of evaporimeter 12 is lower than 5 DEG C, magnetic valve 17 is opened, and a part of hot water in water tank 1 enters bypass line 16 through water pump 5, then enters secondary heater 18, after secondary heater 18 and air carry out heat exchange, gets back to water tank 1.Secondary heater 18 and evaporimeter 12 are oppositely arranged, and make to be entered in evaporimeter 12 by secondary heater 18 by the air heated, owing to entering air themperature in evaporimeter 12 higher than outside air temperature, therefore evaporimeter 12 not easily frosting.Water tank 1 separately connects water system or direct externally hot-water supply.
See Fig. 2, air-source heat pump hot water comprises water tank 1, primary heater 2, water pump 5 between first outlet 3 and the first entrance 4 of primary heater 2 of water tank 1, compressor 9, evaporimeter 12, bypass line 16 between water pump 5 and primary heater 2, the secondary heater 18 that is positioned at the magnetic valve 17 on bypass line 16 and is oppositely arranged with evaporimeter 12.Second outlet 6 of primary heater 2 is connected with the second entrance 7 of water tank 1, and the water of water tank 1 enters primary heater 2 through water pump 5, and the water after heating gets back to water tank 1, circulating-heating like this from the second outlet 6 of primary heater 2.First refrigerant inlet 8 of primary heater 2 exports 10 with the 3rd of compressor 9 and is connected, 3rd entrance 11 of compressor 9 exports 13 with the second refrigerant of evaporimeter 12 and is connected, the second refrigerant entrance 14 of evaporimeter 12 is connected with the first refrigerant outlet 15 of primary heater 2, first refrigerant outlet 15 of primary heater 2 is connected with the 6th entrance 23 of economizer 22, the second refrigerant outlet 13 of evaporimeter 12 is connected with the 6th entrance 23 of economizer 22, and the 5th outlet 24 of economizer 22 is connected with the gas supplementing opening 25 of compressor 9.Accurate two-stage compression technology like this improves the economy of air-source heat pump hot water, reduces the temperature of the cold-producing medium at the 3rd outlet 10 places of compressor 9 simultaneously.Magnetic valve 17 is connected with the 4th entrance 19 of secondary heater 18, and the 4th outlet 20 of secondary heater 18 is connected with the 5th entrance 21 of water tank.When the surface temperature of evaporimeter 12 is lower than 5 DEG C, magnetic valve 17 is opened, and a part of hot water in water tank 1 enters bypass line 16 through water pump 5, and the hot water in bypass line 16 enters secondary heater 18, after secondary heater 18 and air carry out heat exchange, get back to water tank 1.Secondary heater 18 and evaporimeter 12 are oppositely arranged, and make to be entered in evaporimeter 12 by secondary heater 18 by the air heated, owing to entering air themperature in evaporimeter 12 higher than outside air temperature, therefore evaporimeter 12 not easily frosting.
Above-mentioned compressor 9 adopts paddy to take turns tonifying Qi increasing enthalpy compressor.Increase enthalpy operating mode when environment temperature enters tonifying Qi automatically lower than system when 0 DEG C, increase the cold medium flux of evaporimeter, can run well in low temperature, ultra-low temperature surroundings and heat
Above-mentioned evaporimeter 12 three combs.Because the heat exchange area of evaporimeter increases, thus decrease the air heat-exchange temperature difference of evaporimeter, the requirement to evaporating temperature when reducing winter heating, enhances evaporation and heat-exchange effect.
The fin of above-mentioned evaporimeter 12 is made up of hydrophilic aluminium platinum, in the nondecreasing situation of the total heat exchange area of guarantee, strengthen fin interval width.
Connect with copper pipe between above-mentioned each parts, be conducive to improving heating efficiency.
Claims (6)
1. a heat pump water-heating machine, comprise water tank (1), primary heater (2), be positioned at water tank (1) first outlet (3) and first entrance (4) of primary heater (2) between water pump (5), compressor (9) and evaporimeter (12); Wherein, the second outlet (6) of primary heater (2) is connected with second entrance (7) of water tank (1); 3rd outlet (10) of compressor (9) is connected with first refrigerant inlet (8) of primary heater (2), first refrigerant outlet (15) of primary heater (2) is connected with the second refrigerant entrance (14) of evaporimeter (12), and second refrigerant outlet (13) of evaporimeter (12) is connected with the 3rd entrance (11) of compressor (9); It is characterized in that, also comprise the secondary heater (18) being positioned at bypass line (16) between water pump (5) and primary heater (2), being positioned at the magnetic valve (17) on bypass line (16) and being oppositely arranged with evaporimeter (12), wherein, magnetic valve (17) is connected with the 4th entrance (19) of secondary heater (18), and the 4th outlet (20) of secondary heater (18) is connected with the 5th entrance (21) of water tank.
2. heat pump water-heating machine according to claim 1, it is characterized in that, also comprise economizer (22), first refrigerant outlet (8) of primary heater (2) is connected with the 6th entrance (23) of economizer (22), second refrigerant outlet (13) of evaporimeter (12) is connected with the 6th entrance (23) of economizer (22), and the 5th outlet (24) of economizer (22) is connected with the gas supplementing opening (25) of compressor (9).
3. heat pump water-heating machine according to claim 1 and 2, is characterized in that, compressor (9) is paddy wheel tonifying Qi increasing enthalpy compressor.
4. heat pump water-heating machine according to claim 1 and 2, is characterized in that, three combs used by described evaporimeter (12).
5. heat pump water-heating machine according to claim 1 and 2, is characterized in that, the fin of described evaporimeter (12) is made up of hydrophilic aluminium platinum, and increase the interval between fin, total heat exchange area does not reduce.
6. heat pump water-heating machine according to claim 5, is characterized in that, connects between each parts with copper pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410802832.5A CN104654572A (en) | 2014-12-22 | 2014-12-22 | Air-source heat pump water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410802832.5A CN104654572A (en) | 2014-12-22 | 2014-12-22 | Air-source heat pump water heater |
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| CN104654572A true CN104654572A (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410802832.5A Pending CN104654572A (en) | 2014-12-22 | 2014-12-22 | Air-source heat pump water heater |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201145407Y (en) * | 2007-12-11 | 2008-11-05 | 上海理工大学 | Air source heat pump water heater with hot water coil pipe defrosting device |
| CN101566410A (en) * | 2009-05-27 | 2009-10-28 | 湖南工程学院 | Method and system for reducing frosting degree of air-source heat pump hot water unit in winter |
| CN101650075A (en) * | 2009-09-07 | 2010-02-17 | 浙江正理生能科技有限公司 | Air source low-temperature heat pump water heater |
| CN101957061A (en) * | 2010-11-03 | 2011-01-26 | 湖南利能科技股份有限公司 | Quasi-two-stage compression ultralow temperature air source heat pump water heater with economizer |
| CN201740253U (en) * | 2009-12-17 | 2011-02-09 | 王玉玲 | High-efficiency solar heat pump water heater apparatus |
| CN101984311A (en) * | 2010-08-23 | 2011-03-09 | 江苏天舒电器有限公司 | Hot-water frost preventing and defrosting device with compressor cooling |
-
2014
- 2014-12-22 CN CN201410802832.5A patent/CN104654572A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201145407Y (en) * | 2007-12-11 | 2008-11-05 | 上海理工大学 | Air source heat pump water heater with hot water coil pipe defrosting device |
| CN101566410A (en) * | 2009-05-27 | 2009-10-28 | 湖南工程学院 | Method and system for reducing frosting degree of air-source heat pump hot water unit in winter |
| CN101650075A (en) * | 2009-09-07 | 2010-02-17 | 浙江正理生能科技有限公司 | Air source low-temperature heat pump water heater |
| CN201740253U (en) * | 2009-12-17 | 2011-02-09 | 王玉玲 | High-efficiency solar heat pump water heater apparatus |
| CN101984311A (en) * | 2010-08-23 | 2011-03-09 | 江苏天舒电器有限公司 | Hot-water frost preventing and defrosting device with compressor cooling |
| CN101957061A (en) * | 2010-11-03 | 2011-01-26 | 湖南利能科技股份有限公司 | Quasi-two-stage compression ultralow temperature air source heat pump water heater with economizer |
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Application publication date: 20150527 |
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