CN103196226A - Heat-pump water heater - Google Patents
Heat-pump water heater Download PDFInfo
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- CN103196226A CN103196226A CN2013101190348A CN201310119034A CN103196226A CN 103196226 A CN103196226 A CN 103196226A CN 2013101190348 A CN2013101190348 A CN 2013101190348A CN 201310119034 A CN201310119034 A CN 201310119034A CN 103196226 A CN103196226 A CN 103196226A
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Abstract
The invention discloses a heat-pump water heater which comprises an indoor portion and an outdoor portion. The indoor portion comprises a water tank with a heat exchanging device and an evaporator connected with the heat exchanging device through a compressor. The outdoor portion is provided with an outdoor evaporator connected with the evaporator in parallel, one node of parallel connection is connected with a pipeline through a two-position three-way valve, and the outdoor portion comprises a temperature sensor for driving the two-position three-way valve to be switched. By means of the heat-pump water heater, a purpose of defrosting the evaporator is achieved.
Description
Technical field
The present invention relates to a kind of heat pump (Heat Pump) water heater.
Background technology
At present water heater mainly contains four kinds of gas heaters, electric heater, solar water heater, air source hot pump water heater, solar water heater and air source hot pump water heater more and more are subjected to user's favor with its energy-conservation, comfortable characteristics, but both exist some defectives inevitably, solar water heater is affected by environment to have seasonality, and air source hot pump water heater still needs electricity to drive exist electric consumption.Solar energy is combined with air source hot pump water heater and can be addressed this problem well, and it is energy-conservation to take full advantage of the solar energy realization, can remedy the seasonal deficiency of solar energy by air source heat pump again.
Teat pump boiler utilizes contrary Carnot's principle exactly, by medium, heat is delivered to the equipment in the water of high temperature from cryogenic object.Heat pump assembly can make medium (refrigerant) phase transformation, become lower than low-temperature heat source, thereby spontaneous absorption low-temperature heat source heat; Get back to the medium behind the compressor, be compressed into high temperature (water than high temperature is also high) gases at high pressure again, thereby spontaneous heat release is to high temperature heat source; Realization from low-temperature heat source " carrying " heat to high temperature heat source, break through power conversion 100% bottleneck.
Principle: as outward appearance of a natural object, flowed to the lower by eminence as water, heat also always flows to low-temperature space from the high-temperature region.But people can create machine, and as water is risen to eminence and adopts water pump from lower, the employing heat pump can be heat from the cryopump to high temperature.So heat pump comes down to a kind of heat lifting device, the effect of heat pump is draw heat from surrounding environment, and it is passed to heated object (object that temperature is higher), its operation principle is identical with refrigeration machine, all according to contrary Carnot cycle work, difference is that operating temperature range is different.
Because Teat pump boiler is to deenergize from low temperature, mainly is the environment temperature district, will inevitably make the evaporator surface temperature of heat pump be lower than ambient temperature, usually, when environment temperature was lower than 5 ℃, evaporator fin can produce frosting.Frosting not only can produce power consumption, and the Energy Efficiency Ratio of Teat pump boiler is descended, and in the case, need defrost to evaporimeter.
Because the problem of frosting when air source hot pump water heater ubiquity winter or environment temperature are lower than dew-point temperature, frosting have increased the complicated of system's control on the one hand, may exist defrosting thoroughly not cause the low problem of system's heating efficiency on the other hand.Therefore, defrosting is one of air energy heat pump key technologies for application.
Inverse defrosting is a kind of traditional Defrost method, is about to four-way change-over valve and is threaded to the defrosting position, and system switches to the cooling operation pattern by heating operation mode, cold-producing medium absorbs heat at condenser, after the compressed machine compression, high temperature refrigerant heat release when flowing through evaporimeter is defrost process this moment; Defrosting after finishing resets four-way change-over valve, and operation mode recovers to heat in system.The shortcoming of inverse defrosting method is: frequent defrost, defrost not to the utmost.Air energy heat pump is in defrost process, and its operation mode is with to heat operation mode opposite, and defrost process not only can not heat water, also needs the heat of hot water in the absorptive condenser simultaneously, causes water temperature further to descend.
In some implementations, by the position in distance evaporimeter one segment distance fan is installed, carry out defrosting by near the mode that the higher air of temperature is blown to the evaporimeter, this method needs the additional configuration energy consumption equipment, be subjected to the restriction of environment temperature simultaneously, when being below the freezing point as outdoor temperature, the air themperature in other places also needn't evaporimeter place temperature height, and this mode can not effectively defrost.
Defrost by the mode that redundant water tank is set in some implementations, this mode is as good as with traditional approach, all is to defrost by the water in the water tank, has just simplified some on the structure, does not need heat pump to reverse.
Summary of the invention
Therefore, the problem at current limit defrosting means the object of the present invention is to provide a kind of novel Teat pump boiler of effectively evading frosting, the circuitous evaporator defrost difficult problem that solves.
The present invention is by the following technical solutions:
A kind of Teat pump boiler, comprise indoor section and outdoor section, wherein indoor section comprises the water tank that is provided with heat-exchanger rig, is connected in the evaporimeter of described heat-exchanger rig by compressor, and outdoor section is provided with and described evaporimeter and the outdoor evaporimeter that connects, and and a node connecing carry out pipeline by two-position three-way valve and connect, and be contained in outdoor section to drive the temperature sensor that described two-position three-way valve switches.
From such scheme as can be seen, according to the present invention, actual configuration two systems, one is that indoor section is by water tank, compressor, evaporimeter is the heat pump water heater system of base configuration, another is by indoor water tank, compressor and outdoor outdoor evaporimeter are the solar heat-pump water heater system of base configuration, two systems are by moving switching with two-position three-way valve, switch and come from the switching value that temperature sensor is sent, being changed switching value drives, thereby when outdoor temperature is lower than as dew-point temperature, switch to the heat pump water heater system operation according to said structure, otherwise, the solar heat-pump water heater system normally moves, hence one can see that, according to said structure, avoided evaporimeter frosting, also just no longer need the problem in the face of evaporimeter frosting, thus the circuitous problem that has solved evaporator defrost.
On the other hand, Teat pump boiler has as compared with the past only increased an indoor evaporator and two-position three-way valve and drive circuit, than the input of defrosting equipment, its whole cost does not increase, and whole complexity does not improve yet, and link still less, safeguards more convenient.
Above-mentioned Teat pump boiler, the upside of described water tank is provided with overhead guard, is used for installing all or part of parts of described indoor section.
Above-mentioned Teat pump boiler, described heat-exchanger rig are built-in heat exchange coil.
Above-mentioned Teat pump boiler, described outdoor evaporimeter is the inflation type evaporimeter.
Description of drawings
Fig. 1 is the structure principle chart according to a kind of Teat pump boiler of the present invention.
Among the figure: 1, compressor, 2, water tank, 3, expansion valve, 4, the inflation type evaporimeter, 5, evaporimeter, 6, two-position three-way valve.
The specific embodiment
Because the drawback of current evaporimeter frosting defrosting, place outdoor general specification for evaporimeter, this paper proposes another kind of technology path, novel Teat pump boiler as shown in Figure 1, this acting water heater comprises two systems, the one, air source hot pump water heater system; The 2nd, the solar heat-pump water heater system, two systems include public part, can be understood as a general configuration of Teat pump boiler, as water tank 2, expansion valve 3, and water pipeline and connecting line, this all is the intrinsic configuration of Teat pump boiler.
Be different from a general configuration, indoor section comprises water tank 2, compressor 1, these two parts are under the jurisdiction of solar heat pump and water heating system and air source hot pump water heater system simultaneously, the existence of the public part of dual system can be saved cost effectively, and as the intrinsic configuration of Teat pump boiler, also ought to exist, certainly, these two parts also are to belong to indoor section on traditional Teat pump boiler.
Indoor section also is provided with an evaporimeter 5, expansion valve 3, two-position three-way valve 6 and corresponding pipeline simultaneously, wherein compressor 1, evaporimeter 5, expansion valve 3, two-position three-way valve 6 and corresponding pipeline are positioned at the top of water tank 2, cover with overhead guard, into a single integrated structure with water tank 2, make that whole indoor section layout is more reasonable.In some applications, evaporimeter 5 is independent, is positioned over outside the overhead guard, and is more reasonable to improve the heat enrichment.
Outdoor section mainly is arranged on an outdoor evaporimeter, thereby constructed another water-heater system, so just comprise two water-heater systems as same water heater, as shown in Figure 1, switch by a two-position three-way valve 6, structure is very compact, Teat pump boiler as compared with the past is simple unlike Teat pump boiler as herein described because having added defroster, thereby structure as shown in Figure 1 is under the situation of effectively avoiding frosting, and whole cost also has competitiveness.
On the other hand, when outdoor temperature is lower than certain temperature, is positioned at outdoor evaporimeter and is subject to environment temperature, but its heat capacity seriously descends, continue to keep that its heat supply is worth not is very big.
The evaporimeter of outdoor inflation plate structure, simple in structure, cost is low, just the inflation type evaporimeter 4, with indoor evaporimeter 5, be configured to solar energy heat pump system and air energy heat pump system, two systems are by a two-position three-way valve 6 switching that commutates, when outdoor temperature, when sun good fortune illumination meets the demands, this Teat pump boiler absorbs heats by outdoor inflation type evaporimeter 4 and comes water in the water tank 2 in the heating clamber; When outdoor temperature, sun good fortune illumination are not enough, two-position three-way valve 6 effects, this Teat pump boiler absorbs airborne heat by indoor evaporimeter 5 and comes water in the heating clamber inner water tank, satisfies the user hot water demand.
On the other hand, inflation plate as the solar energy heat pump system evaporimeter is placed on outdoor, move according to environmental condition, can avoid effectively under frosting condition, moving, and that the evaporimeter of air source heat pump system is placed on is indoor, the problem that does not have frosting, this Teat pump boiler does not need defrost function, has but avoided the frosting problem of evaporimeter effectively.
Driving about two-position three-way valve 6, because it is fewer that control is counted, can adopt relay system to control, by sending switching value as temperature sensor, drive the actuating of relay, and then drive the two-bit triplet valve events, if the switching value driving force that temperature sensor is sent is more intense, can directly drive two-position three-way valve 6.
In order to realize more effective whole control, can adopt the compacter embedded controller of single-chip microcomputer or structure, when realizing whole control, save cost.
Referring to Figure of description 1, when outdoor environmental conditions (temperature and/or sunlight) when meeting the demands, low-temperature low-pressure refrigerant becomes low-temp low-pressure gas by outdoor inflation type evaporimeter 4 absorption heats and enters compressor 1, high temperature and high pressure gas after the compression enters the water that water tank 2 inner coil pipes emit in the heat heating water tank and becomes high temperature high pressure liquid, become low-temp low-pressure liquid through expansion valve 3 again and enter inflation type evaporimeter 4, so move in circles, up to the water in the water tank 2 is heated to design temperature.
When outdoor environmental conditions (temperature, sunlight) is not enough, by two-position three-way valve 6 commutations, low-temperature low-pressure refrigerant becomes low-temp low-pressure gas by indoor evaporator 5 absorption heats and enters compressor 1, high temperature and high pressure gas after the compression enters the water that water tank 2 inner coil pipes emit in the heat heating water tank and becomes high temperature high pressure liquid, become low-temp low-pressure liquid through expansion valve 3 again and enter evaporimeter 5, so move in circles, up to the water in the water tank 2 is heated to design temperature.
Claims (4)
1. Teat pump boiler, it is characterized in that, comprise indoor section and outdoor section, wherein indoor section comprises the water tank (2) that is provided with heat-exchanger rig, is connected in the evaporimeter (5) of described heat-exchanger rig by compressor (1), and outdoor section is provided with and described evaporimeter (5) and the outdoor evaporimeter that connects, and and a node connecing carry out pipeline by two-position three-way valve and connect, and be contained in outdoor section to drive the temperature sensor that described two-position three-way valve switches.
2. Teat pump boiler according to claim 1 is characterized in that, the upside of described water tank is provided with overhead guard, is used for installing all or part of parts of described indoor section.
3. Teat pump boiler according to claim 1 and 2 is characterized in that, described heat-exchanger rig is built-in heat exchange coil.
4. Teat pump boiler according to claim 1 is characterized in that, described outdoor evaporimeter is the inflation type evaporimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101190348A CN103196226A (en) | 2013-04-08 | 2013-04-08 | Heat-pump water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101190348A CN103196226A (en) | 2013-04-08 | 2013-04-08 | Heat-pump water heater |
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| CN103196226A true CN103196226A (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101190348A Pending CN103196226A (en) | 2013-04-08 | 2013-04-08 | Heat-pump water heater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197516B (en) * | 2014-09-12 | 2016-10-12 | 山东力诺瑞特新能源有限公司 | Based on the solar heat-pump water heater system under VRV pattern |
| CN106468477A (en) * | 2015-08-21 | 2017-03-01 | 青岛经济技术开发区海尔热水器有限公司 | A kind of solar heat-pump water heater and control method |
| CN111156698A (en) * | 2020-01-08 | 2020-05-15 | 北京建筑大学 | Cold storage type instant heating heat pump water heater |
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| JP2001050587A (en) * | 1999-08-06 | 2001-02-23 | Toshiba Electric Appliance Co Ltd | Hot water storage type hot water supply equipment |
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2013
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Patent Citations (6)
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| JP2001050587A (en) * | 1999-08-06 | 2001-02-23 | Toshiba Electric Appliance Co Ltd | Hot water storage type hot water supply equipment |
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| CN201251284Y (en) * | 2008-07-28 | 2009-06-03 | 山东桑乐太阳能有限公司 | Solar energy heatpump water heater |
| CN201297964Y (en) * | 2008-10-07 | 2009-08-26 | 乐清市华东仪表厂 | Digital thermometer |
| CN201757507U (en) * | 2010-06-08 | 2011-03-09 | 广东芬尼克兹节能设备有限公司 | Heat pump water heater with solar evaporator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197516B (en) * | 2014-09-12 | 2016-10-12 | 山东力诺瑞特新能源有限公司 | Based on the solar heat-pump water heater system under VRV pattern |
| CN106468477A (en) * | 2015-08-21 | 2017-03-01 | 青岛经济技术开发区海尔热水器有限公司 | A kind of solar heat-pump water heater and control method |
| CN106468477B (en) * | 2015-08-21 | 2019-05-14 | 青岛经济技术开发区海尔热水器有限公司 | A kind of solar heat-pump water heater and control method |
| CN111156698A (en) * | 2020-01-08 | 2020-05-15 | 北京建筑大学 | Cold storage type instant heating heat pump water heater |
| US11927366B2 (en) | 2020-01-08 | 2024-03-12 | Beijing University Of Civil Engineering And Architecture | Cold-storage instantaneous heat pump water heater |
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Application publication date: 20130710 |
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