CN104654571A - Heat pump water heater - Google Patents
Heat pump water heater Download PDFInfo
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- CN104654571A CN104654571A CN201410802371.1A CN201410802371A CN104654571A CN 104654571 A CN104654571 A CN 104654571A CN 201410802371 A CN201410802371 A CN 201410802371A CN 104654571 A CN104654571 A CN 104654571A
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Abstract
The invention relates to the field of heat pump equipment and particularly relates to a heat pump water heater. Aiming at the problem that a heat pump water heater in a wet-cold region is difficult to be defrosted, the heat pump water heater provided by the invention is additionally provided with a second heater in a position opposite to an evaporator of an existing heat pump water heater, so that one part of hot water generated by the 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 by virtue of reverse defrosting, the problem of frosting in winter in the wet-cold region can be effectively solved; furthermore, the heat pump water heater is low in cost and good in effect. The 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 heat pump water-heating machine.
Background technology
Heat pump water-heating machine is primarily of parts compositions such as compressor, expansion valve, cross valve, evaporimeter, condenser, blower fan, economizers.Compressor sucks low temperature low pressure gas cold-producing medium from evaporimeter, refrigerant compression is become high-temperature high-pressure gas refrigerant, high temperature and high pressure gaseous refrigerant enters condenser, enter in condenser after carrying out heat exchange with water, be condensed into cryogenic liquid and release heat, water absorbs the heat of release, and temperature constantly rises.The high pressure low temperature liquid be condensed is after expansion valve reducing pressure by regulating flow, and by the effect of fan in evaporimeter, absorb surrounding air heat, flash to low temperature low pressure gas, low temperature low pressure gas enters in compressor again and compresses.Iterative cycles like this, hot water preparing.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 north latitude 32 ° of areas, as ground frostings such as Shanghai, Changsha, Chengdu except dew is frequent, the problem that heating efficiency declines is more serious.Existing low form heat pump water-heating machine generally cannot normally run in lower than the environment of-10 DEG C.Therefore, how heat pump water-heating machine reduces frosting is a difficult problem.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of heat pump water-heating machine of not easily frosting is provided.
Heat pump water-heating machine provided by the invention, comprises water tank 1, primary heater 2, water pump 5, compressor 9, evaporimeter 12, the bypass line 16 between water pump 5 and primary heater 2, the first magnetic valve 17 on bypass line 16 between first outlet 3 and the first entrance 4 of primary heater 2 of water tank 1, exports the 3rd secondary heater 18 exporting the second magnetic valve 26 between 10 and be oppositely arranged with evaporimeter 12 of 13 and compressor 9 at the second refrigerant of 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; First 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 heat pump water-heating machine 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, the fin of evaporimeter is made up of hydrophilic aluminium platinum, and increase the interval between fin, total heat exchange area does not reduce.
Preferably, connect with copper pipe between each parts.
Heat pump water-heating machine provided by the invention, the position relative at the evaporimeter of existing heat pump water-heating machine increases secondary heater, a part in the hot water that heat pump water-heating machine is produced with will enter air heat-shift in secondary heater of evaporimeter, improve the temperature entering the air of evaporimeter, coordinate oppositely defrosting, effectively can solve the frosting problem of clammy area heat pump water-heating machine in winter, and cost is low, effective.Heat pump water-heating machine 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 condensation side cold medium flux, 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 foil, 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 heat pump water-heating machine under equal outdoor temperature and damp condition can not frosting or reduce frosting degree, thus decrease defrosting number of times and defrosting time, improve the frosting resistance ability of heat pump water-heating machine; Heat pump water-heating machine adopts oppositely defrosting, and when the fin frosting of evaporimeter, the high temperature refrigerant that compressor is discharged is delivered in evaporimeter by heat pump water-heating machine, realizes automatic defrosting.
Heat pump water-heating machine provided by the invention, can make Energy Efficiency Ratio improve 10%, can improve 15%, can improve nearly 30% under-5 DEG C of environment temperatures under-10 DEG C of environment temperatures under 0 DEG C of environment temperature, 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 heat pump water-heating machine defrosting difficult problem in the middle and lower reach of Yangtze River, be convenient to heat pump water-heating machine 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 heat pump water-heating machine of accurate two-stage compression.This heat pump water-heating machine 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 19% ~ 44%, and the coefficient of performance improves 7% ~ 30%, and energy-saving effect is remarkable.Under mark condition condition, during COP value 4.0 ,-10 ~-15 DEG C of operating modes COP value about 2.0 prior aries heat pump water-heating machine under the same conditions, COP is about 1.5 or can normally run just good.Under standard condition, dry, the wet-bulb temperature of environment is respectively 20 DEG C and 15 DEG C when heating, and 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 6.3; Water is heated to 55 DEG C from 50 DEG C, and average COP value also can reach 3.1; 2. under worst cold case, dry, the wet-bulb temperature of environment is respectively-10 DEG C and-11 DEG C, and heat pump water-heating machine can run well and heat, and unit COP value is minimum is 1.5, can reach 2.0; 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, the defrost of heat pump water-heating machine is functional, and short, the defrost of defrost time evenly, thoroughly, and can reach stable state after defrost very soon, continues to heat.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the present of invention.
Fig. 2 is the structural representation 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 heat pump water-heating machine comprises water tank 1, primary heater 2, water pump 5, compressor 9, evaporimeter 12, the bypass line 16 between water pump 5 and primary heater 2, the first magnetic valve 17 on bypass line 16 between first outlet 3 and the first entrance 4 of primary heater 2 of water tank 1, exports the 3rd secondary heater 18 exporting the second magnetic valve 26 between 10 and be oppositely arranged with evaporimeter 12 of 13 and compressor 9 at the second refrigerant of evaporimeter 12.Second outlet 6 of primary heater 2 is connected with the second entrance 7 of water tank 1.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 from the second outlet 6 of primary heater 2, carries out circulating-heating.The second refrigerant outlet 13 of evaporimeter 12 is connected with the pipeline that the 3rd of compressor 9 exports through being provided with the second magnetic valve 26 between 10, adopts oppositely defrosting to realize the automatic defrosting of evaporimeter 12.3rd 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, because the air entered in evaporimeter 12 is heated, its temperature 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, heat pump water-heating machine comprises water tank 1, primary heater 2, water pump 5, compressor 9, evaporimeter 12, the bypass line 16 between water pump 5 and primary heater 2, the first magnetic valve 17 on bypass line 16 between first outlet 3 and the first entrance 4 of primary heater 2 of water tank 1, exports the 3rd secondary heater 18 exporting the second magnetic valve 26 between 10 and be oppositely arranged with evaporimeter 12 of 13 and compressor 9 at the second refrigerant of evaporimeter 12.Second outlet 6 of primary heater 2 is connected with the second entrance 7 of water tank 1.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 from the second outlet 6 of primary heater 2, carries out circulating-heating.The second refrigerant outlet 13 of evaporimeter 12 is connected with the pipeline that the 3rd of compressor 9 exports through being provided with the second magnetic valve 26 between 10, adopts oppositely defrosting to realize the automatic defrosting of evaporimeter 12.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 heat pump water-heating machine, 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, because the air entered in evaporimeter 12 is heated, its temperature higher than outside air temperature, therefore evaporimeter 12 not easily frosting.Water tank 1 separately connects water system or direct externally hot-water supply.
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, comprises water tank (1), primary heater (2), is positioned at water pump (5) between the first outlet (3) of water tank (1) and first entrance (4) of primary heater (2), compressor (9), evaporimeter (12) and the second refrigerant that is positioned at evaporimeter (12) and exports the 3rd of (13) and compressor (9) and export the second magnetic valve (26) between (10); 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 first magnetic valve (17) on bypass line (16) and being oppositely arranged with evaporimeter (12), wherein, first 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 |
|---|---|---|---|
| CN201410802371.1A CN104654571A (en) | 2014-12-22 | 2014-12-22 | Heat pump water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410802371.1A CN104654571A (en) | 2014-12-22 | 2014-12-22 | Heat pump water heater |
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| Publication Number | Publication Date |
|---|---|
| CN104654571A true CN104654571A (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410802371.1A Pending CN104654571A (en) | 2014-12-22 | 2014-12-22 | Heat pump water heater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042855A (en) * | 2015-08-27 | 2015-11-11 | 江苏天舒电器有限公司 | Ultra-low-temperature direct-heating heat pump water heater |
| CN105180450A (en) * | 2015-08-27 | 2015-12-23 | 江苏天舒电器有限公司 | Water system control method of ultralow-temperature once heating heat pump water heater |
| CN109724175A (en) * | 2019-02-20 | 2019-05-07 | 中国人民解放军63921部队 | The energy-saving fresh freeze drying system of low dew-point air supply |
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| 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 |
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2014
- 2014-12-22 CN CN201410802371.1A patent/CN104654571A/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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042855A (en) * | 2015-08-27 | 2015-11-11 | 江苏天舒电器有限公司 | Ultra-low-temperature direct-heating heat pump water heater |
| CN105180450A (en) * | 2015-08-27 | 2015-12-23 | 江苏天舒电器有限公司 | Water system control method of ultralow-temperature once heating heat pump water heater |
| CN105180450B (en) * | 2015-08-27 | 2018-01-23 | 江苏天舒电器有限公司 | A kind of heating type heat pump hot water water system control method of ultralow temperature |
| CN109724175A (en) * | 2019-02-20 | 2019-05-07 | 中国人民解放军63921部队 | The energy-saving fresh freeze drying system of low dew-point air supply |
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Application publication date: 20150527 |