CN100347488C - Critical heat accumulating heat pump water heater - Google Patents
Critical heat accumulating heat pump water heater Download PDFInfo
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- CN100347488C CN100347488C CNB2004100264538A CN200410026453A CN100347488C CN 100347488 C CN100347488 C CN 100347488C CN B2004100264538 A CNB2004100264538 A CN B2004100264538A CN 200410026453 A CN200410026453 A CN 200410026453A CN 100347488 C CN100347488 C CN 100347488C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The present invention relates to a heat pump water heater by using phase change to accumulate heat, which mainly comprises a compressor, an evaporator, a fan, a throttle device, a filter drier, a controller, a cold water inlet pipe, a hot water outlet pipe, a heat power circulating pipe and a phase change heat accumulating device, wherein the phase change heat accumulating device is mainly composed of a temperature sensor, a casing, insulation material, an inner bag, phase change heat accumulating material and a heat exchange discharge pipe. In the heat pump water heater of the present invention, the evaporator absorbs heat quantity from an air source, and the compressor consumes electric energy to do work to transmit the heat quantity to the phase change heat accumulating material which accumulates the heat quantity. When users use hot water, the phase change heat accumulating material heats cold water in a hot water pipe. An adjustable auxiliary electric heater is arranged or is not arranged in the phase change heat accumulating device according to different use places. When the heating efficiency of a heat pump system is low or a large amount of hot water needs to be arranged for a short time during holidays, the adjustable auxiliary electric heater can be started to heat in an auxiliary mode. The heat pump water heater of the present invention has the advantages of small size, light weight, easy use and flexible installation, and can be widely applied to the fields of production and life.
Description
Technical field
The invention belongs to field of water heaters, be specifically related to a kind of heat pump water heater of phase change thermal storage.
Background technology
Raising along with people's living standard, domestic hot water's function no longer is only to be used to have a bath, and also is used to wash cleaners and polishes and washed etc., and the consumption of hot water increases, to comfortableness hot water require more prevalent, to water heater aspect of performance safe, efficient save money, environmental requirement is more and more higher.Traditional water heater has three kinds: gas heater, electric heater and solar water heater, wherein gas heater exist that efficient is low, potential safety hazard and problem of environmental pollution; The electric heater power consumption is bigger, also has security hidden trouble simultaneously; It is restricted that solar water heater is installed occasion, is subjected to the influence of weather weather, and the rainy day can't provide hot water, because manufacturer is numerous, product quality is uneven, has also influenced the use of solar water heater.Novel high-tech product---the Teat pump boiler of Chu Xianing in the market, not only have some row advantages such as thermodynamic coefficient height, energy saving, environmental protection, safety, but also have heat storage capacity, and can utilize the cheap electric energy heating in evening, concerning country, reduced the power tense situation; Concerning family, saved the operation spending.
Teat pump boiler is after occurring on the market, be subjected to user's welcome, in some hotels, swimming pool, the operating position of occasions such as villa is good, but, we are by the investigation to existing Teat pump boiler actual product, analyze and find that existing product has the higher energy efficiency ratio for assurance, the noise the during operation of minimizing equipment, the compressor horsepower of Teat pump boiler selects lessly, its endothermic process is slow, belong to volume heat accumulation type, rather than immediate heating type, employing be sensible heat mode heat accumulation, thereby its volume do bigger, for most floor residents, the installation site is restricted, has influenced Teat pump boiler purchase and the use among the consumer group in this section; On the other hand, because boiler will bear certain pressure, all profiles all are circular configurations, and are not attractive in appearance, and the user to the selection of face shaping just seldom.Therefore both kept that Teat pump boiler is energy-efficient, the characteristics of Environmental Safety, reduced the Teat pump boiler volume simultaneously significantly, reduced weight, be very important.In fact, if adopt phase change heat storage material to substitute the Teat pump boiler storage tank, just can reach this purpose.
Relate to application and the research and few of phase-transition heat-storage on heat pump at present: patent 03129369.7 discloses a kind of Phase Change Heat Accumulation Preheating Type Heat Pump Water Heater, be characterized in and will constitute the heat exchange coil separated into two parts of heat pump condenser: heat storage and exchange device and heating heat exchanger are in series, the former heats 35～50 ℃ phase-change material, the latter is that heating has been preheating to water about 30 ℃ by heat accumulating, coolant-temperature gage is emitted to 45～55 ℃ at last, and phase-change thermal storage just is used for the purpose of the preheating of hot water.
Summary of the invention
The object of the present invention is to provide a kind of heat pump water heater of phase change thermal storage, the volume that it has overcome the existence of normal domestic use Teat pump boiler is big, the restricted problem of the installation of floor family.The phase transition temperature of phase-change material of the present invention is 45～90 ℃, amount of stored heat can be heated to hot water the user and directly use 35～80 ℃ of required temperature, when using hot water, the user in the sufficiently long time, need not start heat pump, utilize the accumulation of heat direct heating of phase-change material, be essentially different with patent 03129369.7; Structural in addition mode is also different fully with patent 03129369.7.
The present invention realizes by following structures technical scheme and device programme of work: Fig. 1 is the structural representation of heat pump water heater of phase change thermal storage of the present invention, heat pump water heater of phase change thermal storage of the present invention mainly comprises compressor (1), evaporimeter (3), fan (4), throttling arrangement (6), Filter dryer (7), controller (8), cold water inlet (10), hot water outlet pipe (17), the thermodynamic cycle pipe (5) and the phase transition heat accumulation unit (20) that connect each parts of heat pump water heater of phase change thermal storage, described throttling arrangement (6) is expansion valve or capillary, phase transition heat accumulation unit (20) is the heat storage container of heat tracing, its inside is the quad seal device, according to the service behaviour of heat pump characteristics influenced by ambient temperature, phase transition heat accumulation unit of the present invention (20) is designed to I type and two kinds of versions of II type: the structural representation of II type phase transition heat accumulation unit (20) as shown in Figure 5, comprise: temperature sensor (9), shell (12), insulating materials (13), inner bag (14), phase change heat storage material (15), heat exchange pipe (16) and adjustable electrical auxiliary heater (23), described adjustable electrical auxiliary heater (23) is inserted on the shell (12), be filled with insulating materials (13) between shell (12) and the inner bag (14), temperature sensor (9) and heat exchange pipe (16) are arranged in the inner bag (14), and fill up whole inner bag (14) by phase change heat storage material (15), the top of inner bag (14) is wavy metal film (19), is in order to satisfy phase change heat storage material (15) needs that volume size changes when undergoing phase transition; Described heat exchange pipe (16) comprises hot water heat exchange coil (22) and condensing heat-exchange coil pipe (21), and hot water heat exchange coil (22) is staggered with condensing heat-exchange coil pipe (21); Compressor (1), condensing heat-exchange coil pipe (21), Filter dryer (7), throttling arrangement (6), evaporimeter (3) connect successively by thermodynamic cycle pipe (5), and cold-producing medium flows interior, forms a cold-producing medium working cycles; In addition, check valve (11) is installed on the cold water inlet (10), and link to each other with hot water heat exchange coil (22), the outlet of hot water heat exchange coil (22) links to each other with hot water outlet pipe (17), stop valve (18) is installed on the hot water outlet pipe (17), can regulate the water yield size, form a hot water workflow; Controller (8) is a surface-mounted integrated circuit, link to each other with the temperature sensor (2) at evaporimeter (3) intake air temperature measuring point place and the temperature sensor (9) at the interior measuring point of phase transition heat accumulation unit (20) place respectively by lead, link to each other with compressor (1) and fan (4) motor power circuit by lead simultaneously, form one and control the workflow that compressor (1) moves or stops by the measuring point temperature; Described temperature sensor (2) and temperature sensor (9) are platinum resistance temperature sensor.
Phase change heat storage material (15) stores the mode of heat with latent heat, and phase change heat storage material when the user uses hot water (15) discharges latent heat, emits heat with approximate isothermal, and the heat release time is long, has highly stable heat supply water-based energy; The purpose that adopts insulating materials (13) is in order to reduce the heat waste of phase change heat storage material (15), and adjustable electrical auxiliary heater (23) adopts semiconductor thermoelectric film, is too low in environment temperature, uses when heat pump efficiency is very low or when festivals or holidays, the hot water consumption increased sharply.
The structural representation of I type phase transition heat accumulation unit (20) as shown in Figure 4, it is compared with the II type, has just lacked adjustable electrical auxiliary heater (23), provinces and cities and country in Southeast Asia use suggestion I type version in Guangdong, Hainan etc.; Suggestion II type version is promoted the use of in the middle and lower reach of Yangtze River.
The present invention compares with patent 03129369.7: the present invention directly utilizes phase change heat storage material (15) that water is heated to the required temperature of user, and patent 03129369.7 just is used for preheating; The phase transition temperature section that phase change heat storage material adopted is also different: selected phase change heat storage material (15) phase transition temperature of the present invention is 45～90 ℃, and the phase transition temperature of the phase change heat storage material of patent 03129369.7 is 35～50 ℃; The difference that also has essence on the structure: the present invention arranges hot water heat exchange coil (22) and condensing heat-exchange coil pipe (21) with staggered pattern, arrangement is divided into dual mode: a kind of is the 1+2 mode, as shown in Figure 2, a hot water heat exchange coil (22), two condensing heat-exchange coil pipes (21); Another is the 2+3 mode, as shown in Figure 3, and two hot water heat exchange coil (22), three condensing heat-exchange coil pipes (21).Be connected with spot welding between hot water heat exchange coil (22) and the condensing heat-exchange coil pipe (21), form heat exchange pipe (16), whole heat exchange pipe (16) is all within phase change heat storage material (15), hot water heat exchange coil (22) is directly used the bronzing pipe with condensing heat-exchange coil pipe (21), very convenient when filling phase change heat storage material (15) like this, adopt and the water reflux type in the heat transfer, hot water heat exchange coil (22) is to realize that the cold-producing medium in the condensing heat-exchange coil pipe (21) heats the hot water direct part in the hot water heat exchange coil (22) with the purpose that condensing heat-exchange coil pipe (21) is in juxtaposition by spot welding, guarantee after the present invention has used the sufficiently long time, (to surpass normal water consumption scope), when the user also wants to continue to use hot water, start compressor (1), by condensing heat-exchange coil pipe (21) hot water heat exchange coil (22) and phase change heat storage material (15) are directly heated, the outlet temperature of water is higher, in a period of time, satisfy user's demand, on phase transition heat accumulation unit (20), increased adjustable electrical auxiliary heater (23) in addition; 03129369.7 of patent is to adopt condenser is divided into heat storage and exchange device and heating heat exchanger dual mode, the former is used for the preheating phase-change material, about 30 ℃ water to preheating when the latter is used for the user and uses hot water further promotes temperature, employing be concurrent.
Phase change heat storage material among the present invention (15) is a phase transition temperature at 45～90 ℃ non-conductive heat storage medium, and its composition can be KF4H
2O, Ca (NO3)
24H
2O, 3H
2OCH
3COONa, CH
3(CH
2)
12COOH, CH
3(CH
2)
14COOH, CH
3(CH
2)
16The PCM50 phase-change material of COOH, glycerine tristearate and the development of Zhongshan City, Guangdong Province Xin Di company etc.When the cold-producing medium in the compressor (1) was R22 or R134a, selecting phase transition temperature for use was 45-60 ℃ phase change heat storage material (15); When cold-producing medium was R744, R22/R134a mixed working fluid and other high temperature refrigerant, selecting phase transition temperature for use was 60-90 ℃ phase change heat storage material (15).
Patent of the present invention is compared with the 26S Proteasome Structure and Function of existing Teat pump boiler and to be had following advantage except energy-efficient, environmental protection and safety with ordinary hot pump water heater:
1.. moderate cost, and thermal capacity is big, and the latent heat of phase change value is bigger, absorbs a large amount of heats in the phase transition process, therefore can reduce the Teat pump boiler volume significantly, and its volume size is equivalent to 1/3～1/2 of storage tank;
2.. I type among the present invention or II type phase transition heat accumulation unit (20) are because phase change heat storage material (15) volume is little, in light weight, load-bearing is little, therefore can be with its configuration design squarely or other shape, compact conformation, reasonable, attractive in appearance, simultaneously can match the economization room space with building structure; And installation form is various, can be indoor also can be outdoor, can land installation, wall hanging to install, inlay on the wall in the time of also can fitting up;
3.. the present invention utilizes phase change heat storage material (15) to make secondary heat source, condensing heat-exchange coil pipe (21) in the device or adjustable electrical auxiliary heater (23) heat phase change heat storage material (15) earlier, when temperature reaches set temperature value (slightly higher) than phase transition temperature, heating stops, phase transition heat accumulation unit is in holding stage, during user's water, phase change heat storage material (15) undergoes phase transition, and discharges latent heat water is constantly heated;
4.. surpassing under the daily water yield situation, when the user wanted to continue to use hot water, the present invention can guarantee this demand of the user in a period of time.
Description of drawings
Fig. 1 is the structural representation of heat pump water heater of phase change thermal storage of the present invention;
Fig. 2 is one of heat exchange pipe (16) structural representation;
Fig. 3 is two of heat exchange pipe (a 16) structural representation;
Fig. 4 is the structural representation of I type phase transition heat accumulation unit (20);
Fig. 5 is the structural representation of II type phase transition heat accumulation unit (20).
Among the figure: the adjustable electrical auxiliary heater of 1-compressor 2-temperature sensor 3-evaporimeter 4-fan 5-thermodynamic cycle pipe 6-throttling arrangement 7--device for drying and filtering 8-controller 9-temperature sensor 10-cold water inlet 11-check valve 12-shell 13-heat-insulating material 14-inner bag 15-phase change heat storage material 16-heat exchange pipe 17-hot water outlet pipe 18-stop valve 19-wavy metal film 20-regenerative apparatus 21-condensing heat-exchange coil pipe 22-hot water heat exchange coil 23-
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described:
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, heat pump water heater of phase change thermal storage embodiment with II type phase transition heat accumulation unit (20): when the value of the temperature sensor (9) at the temperature point place that is positioned at phase transition heat accumulation unit (20) is lower than design temperature a, the value of design temperature a is a little more than the phase transition temperature of the phase change heat storage material that is adopted (15), compare temperature sensor (2) signal at evaporimeter (3) intake air temperature measuring point place this moment in controller (8) with set temperature value b, the value of design temperature b determine that according to heat pump water heater of phase change thermal storage hot coefficient of work schedule under this environment temperature be that 1.0 condition is determined, in most times among 1 year, the value of the temperature sensor (2) at evaporimeter (3) intake air temperature measuring point place is greater than setting value, controller (8) sends signal to the motor of compressor (1), start compressor (1) by executing agency, heat cold-producing medium transmission in the evaporimeter (3) in heat pump in the surrounding air at this moment, under the promotion of compressor (1), the cold-producing medium that has absorbed amount of heat in the evaporimeter (3) is transported in the condensing heat-exchange coil pipe (21), by condensing heat-exchange coil pipe (22) phase change heat storage material (15) is heated, phase change heat storage material (15) undergoes phase transition, heat is stored, add the calorie value that electric energy transformed that compressor (1) is consumed for the heat that from environment, absorbs to the heat that phase change heat storage material (15) discharges.Heat pump water heater of phase change thermal storage has higher Energy Efficiency Ratio, can be any time among one day heat time heating time, as being arranged on heat time heating time between 23:00～7:00 in evening, to the peak load shifting effect of having powered, alleviate China's shortage of electric power situation, in the area of having implemented peak valley current potential price difference, for the user reduces expenses, when user's heat water, phase change heat storage material (15) heats the water in the hot water heat exchange coil (22), phase change heat storage material (15) discharges latent heat by phase transformation, phase change heat storage material in exothermic process (15) is temperature-resistant, and exothermic character is good, and thermal discharge is big, the heat release time is long, thereby the user can obtain constant water temperature.When festivals or holidays, the hot water consumption increased sharply, start adjustable electrical auxiliary heater (23) and compressor (1) simultaneously by controller (8), the common heating satisfied user's urban water demand.
In very short a period of time among 1 year, environment temperature is very low, when the value of the temperature sensor (2) at evaporimeter (3) intake air temperature measuring point place is lower than design temperature b value, compressor (1) heating efficiency under this environment temperature is very poor, do not start compressor (1) this moment, depends merely on the auxiliary heating of adjustable electric heater (23).
Heat pump water heater of phase change thermal storage embodiment with I type phase transition heat accumulation unit (20): province ,city and area such as this constructed products is suitable in Guangdong, Hainan and country in Southeast Asia etc. promote the use of, basically can both move expeditiously the whole year, the mode that its working method and II type phase transition heat accumulation unit (20) structure of introducing above use compressor (1) to heat separately is on all four.
The present invention had both made full use of the energy-efficient effect of heat pump, substituted storage tank with phase transition heat accumulation unit simultaneously, and volume is little, in light weight, save user's space, install unrestricted, both can independently put, also can go out face shaping, for example phase transition heat accumulation unit can be designed to an interior wall with fabric structure is designed in conjunction, not only attractive in appearance, and the volume that do not take up space, load-bearing is little, makes the installation occasion of heat pump water heater of phase change thermal storage more extensive, can be widely used in the productive life field.
Claims (9)
1. heat pump water heater of phase change thermal storage, mainly comprise: compressor (1), evaporimeter (3), fan (4), throttling arrangement (6), Filter dryer (7), controller (8), cold water inlet (10), hot water outlet pipe (17), thermodynamic cycle pipe (5) and phase transition heat accumulation unit (20), it is characterized in that, described phase transition heat accumulation unit (20) is by temperature sensor (9), shell (12), insulating materials (13), inner bag (14), phase change heat storage material (15) and heat exchange pipe (16) are formed, be filled with insulating materials (13) between described shell (12) and the inner bag (14), temperature sensor (9) and heat exchange pipe (16) are arranged in the inner bag (14), and fill up whole inner bag (14) by phase change heat storage material (15), the top of inner bag (14) is wavy metal film (19); Described heat exchange pipe (16) comprises hot water heat exchange coil (22) and condensing heat-exchange coil pipe (21), and hot water heat exchange coil (22) is staggered with condensing heat-exchange coil pipe (21); Described compressor (1), condensing heat-exchange coil pipe (21), Filter dryer (7), throttling arrangement (6), evaporimeter (3) connect successively by thermodynamic cycle pipe (5), check valve (11) is installed on the cold water inlet (10), and link to each other with hot water heat exchange coil (22), the outlet of hot water heat exchange coil (22) links to each other with hot water outlet pipe (17), and stop valve (18) is installed on the hot water outlet pipe (17); Described controller (8) links to each other with the temperature sensor (2) at evaporimeter (3) intake air temperature measuring point place and the temperature sensor (9) at the interior measuring point of phase transition heat accumulation unit (20) place respectively by lead, links to each other with compressor (1) and fan (4) motor power circuit by lead simultaneously.
2. heat pump water heater of phase change thermal storage according to claim 1 is characterized in that, is inserted with adjustable electrical auxiliary heater (23) on the shell (12) of described phase transition heat accumulation unit (20).
3. heat pump water heater of phase change thermal storage according to claim 1 and 2, it is characterized in that, described hot water heat exchange coil (22) is staggered in the 1+2 mode with condensing heat-exchange coil pipe (21), an i.e. hot water heat exchange coil (22), be connected with spot welding between the two condensing heat-exchange coil pipes (21), hot water heat exchange coil and condensing heat-exchange coil pipe.
4. heat pump water heater of phase change thermal storage according to claim 1 and 2, it is characterized in that, described hot water heat exchange coil (22) is staggered in the 2+3 mode with condensing heat-exchange coil pipe (21), i.e. two hot water heat exchange coil (22), be connected with spot welding between the three condensing heat-exchange coil pipes (21), hot water heat exchange coil and condensing heat-exchange coil pipe.
5. heat pump water heater of phase change thermal storage according to claim 1 and 2 is characterized in that, described phase change heat storage material (15) is a phase transition temperature at 45～90 ℃ non-conductive heat storage medium.
6. heat pump water heater of phase change thermal storage according to claim 1 and 2 is characterized in that, when the cold-producing medium in the described compressor (1) was R22 or R134a, selecting phase transition temperature for use was 45-60 ℃ phase change heat storage material (15); When cold-producing medium was R744, R22/R134a mixed working fluid and other high temperature refrigerant, selecting phase transition temperature for use was 60-90 ℃ phase change heat storage material (15).
7. heat pump water heater of phase change thermal storage according to claim 1 and 2 is characterized in that, described throttling arrangement (6) is expansion valve or capillary.
8. heat pump water heater of phase change thermal storage according to claim 1 and 2, it is characterized in that the temperature sensor (9) at the temperature sensor (2) at described evaporimeter (3) intake air temperature measuring point place and the interior measuring point of phase transition heat accumulation unit (20) place is a platinum resistance temperature sensor.
9. heat pump water heater of phase change thermal storage according to claim 1 and 2 is characterized in that, described hot water heat exchange coil (22) and condensing heat-exchange coil pipe (21) are the bronzing pipe.
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| CNB2004100264538A CN100347488C (en) | 2004-03-12 | 2004-03-12 | Critical heat accumulating heat pump water heater |
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| CNB2004100264538A CN100347488C (en) | 2004-03-12 | 2004-03-12 | Critical heat accumulating heat pump water heater |
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| CN1563812A CN1563812A (en) | 2005-01-12 |
| CN100347488C true CN100347488C (en) | 2007-11-07 |
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| CNB2004100264538A Expired - Fee Related CN100347488C (en) | 2004-03-12 | 2004-03-12 | Critical heat accumulating heat pump water heater |
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| US20030042014A1 (en) * | 2001-08-31 | 2003-03-06 | Jin Keum Su | Heat pump system |
| CN2557873Y (en) * | 2002-06-06 | 2003-06-25 | 中山长青燃气具有限公司 | Phase-change type electric water-heater |
| CN1462850A (en) * | 2003-06-16 | 2003-12-24 | 浙江大学 | Preheating type heat pump water heater using stored heat caused by phase change |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116940792A (en) * | 2021-02-07 | 2023-10-24 | 八达通能源供暖有限公司 | Reducing water/energy consumption in water supply systems |
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| CN1563812A (en) | 2005-01-12 |
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