CN1818498A - Hot-pump water heater with air source - Google Patents
Hot-pump water heater with air source Download PDFInfo
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- CN1818498A CN1818498A CN 200610049686 CN200610049686A CN1818498A CN 1818498 A CN1818498 A CN 1818498A CN 200610049686 CN200610049686 CN 200610049686 CN 200610049686 A CN200610049686 A CN 200610049686A CN 1818498 A CN1818498 A CN 1818498A
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Abstract
An air source heat pump water heater comprises a main body, a thermal storage insulated water tank and a controller. The main body is contactly made up of a finned tube type evaporimeter, an auxiliary frost-dissolving heat exchanger, a gas-liquid separator, a compressor, a double pipe heat exchanger, a reservoir, an electronic expansion valve, a reserving valve, a magnetic valve, a one-way valve and the relative refrigeration fittings. The double pipe heat exchanger is connected with a refrigerant and a heat water-circulating pipe lines separately to make the refrigerant and water exchange heat. The heat water-circulating pipes are disposed on the upper and lower parts of the heat storage insulated water tank separately.
Description
One, affiliated technical field
The present invention relates to the hot device of a kind of air source heat pump, particularly, belong to energy class heat supply process field having the hot water apparatus that direct vaporation-type air source hot pump water heater defrosting system and hot-water supply system have made improved a kind of energy-saving and environmental protection type now.
Two, background technology
The water heater product of generally selling on China water heater market is electric heater, gas heater and solar water heater etc. at present.Wherein, electric heater is a cost with the electric power that consumes a large amount of costlinesses, is unfavorable for the reasonable utilization of the energy; In use then there is serious potential safety hazard in gas heater, and report is arranged during the annual poisoning that causes because of the use of gas heater; Conventional solar water heater can not be produced hot water overcast and rainy, can only rely on electrical heating to remedy the deficiency of solar energy, thereby the wasting phenomenon that also has the energy particularly uses this water heater very uneconomical at some overcast and rainy many southern areas.So, a kind of novel water heater based on the heat pump cycle principle begins to show up prominently on water heater market, it is to utilize evaporimeter to absorb heat energy (solar energy, air or water etc.) from surrounding environment, and by condenser heat energy is discharged into and goes in the water, thereby realizes the production of hot water.That Teat pump boiler has is energy-efficient, environmental protection, advantage such as safe and reliable, can round-the-clockly use.Energy crisis is just more and more seriously restricting the fast development of Chinese national economy; the seriousness of just can let us recognizing this problem from " severe power shortage " of outburst in all parts of the country in recent years fully aware ofly; therefore; the development energy-conserving product is that country supports, the act of common people's benefit, has wide development and application prospect.
In the existing air source hot pump water heater, as: Chinese patent once disclosed " air source hot pump water heater " (CN200420019720.4, day for announcing 2005.02.02), off-premises station is by air cooling heat exchanger, compressor and related accessory are formed, plate-type condenser respectively with refrigerant line, hot water circulating pipeline connects, adopt water circulating pump that the circulation power of hot-water return is provided, attemperater adopts the pressure-bearing type structure, on, the bottom is respectively equipped with the hot water circuit adapter and is connected with water circulating pump with plate-type condenser, form closed hot water circulation loop, be provided with the restricted baffle that circle lacks shape in the inner core, to increase the resistance of hot water circuit in water tank, controller adopts single-chip microcomputer, input is for inserting the temperature sensor in the water tank, output control compressor, the start and stop of aerofoil fan and water circulating pump, major defect are to apply at northern area.As: " a kind of air source hot pump water heater " (CN200420027103.9, day for announcing 2005.06.01) comprises water storage tank, source pump, heat pump heat exchanger, cooling-water temperature sensor, environment temperature sensor, electric heater and controller.Described electric heater is installed in the water storage tank, controller is accepted the detectable signal from environment temperature sensor and cooling-water temperature sensor, whether are the temperature control source pump of surveying according to the two temperatures sensor and the work of electric heater, major defect is no defrost function, can't apply in area, the middle and lower reach of Yangtze River.
Commercially available portion of air source heat pump water heater: condenser is directly placed in the water tank, main frame is made up of compressor, device for drying and filtering, capillary, air cooling heat exchanger, gas-liquid separator and pipe arrangement, simple in structure, with low cost, major defect is, no defrosting device, and the suitable environment temperature range is little, the high and low temperature poor performance, in the environment of low temperature and high relative humidity, can't use, as applying in area, the middle and lower reach of Yangtze River.Another part air source hot pump water heater: improving has on this basis increased air-conditioning tradition defrosting device: four-way change-over valve or hot gas bypass solenoid valve, though these two kinds of improvement all possess the defrost function, but because the little limitation of capillary adaptive range, can not be from resolve the high and low temperature performance at all, and also there is defective in defrost process, when the former adopts four-way change-over valve commutation defrost the water in the water tank is freezed, thereby cause thermal loss; The latter adopts the hot gas bypass solenoid valve defrost, owing to can't constitute height pressure reduction, causes defrost weak effect, time long.
Existing commercial air source hot pump water heater water system, great majority adopt a heat storing and heat preserving storage tank to be connected to form water circulation system by water circulating pump and air source hot pump water heater, stainless steel floating ball control is adopted in the cold water supply, air source hot pump water heater is according to the temperature start and stop in the storage tank, heat storing and heat preserving storage tank capacity is generally decided according to client's water consumption every day, major defect is, the storage tank capacity is big, Teat pump boiler can not be heated to trunkful cold water the customer demand temperature in short time, promptly the client can't water before Jiang Shui is heated to the customer demand temperature, can not realize real round-the-clock heat supply water, in addition, even if trunkful hot water, but the client when using hot water cold water constantly cover again, how much hot water used, how much cold water just advanced, and water tank temperature constantly reduces, when having used a half, water temperature has been reduced to below the customer demand temperature, so that rate of thermal water utilization is extremely low.
Three, innovation and creation content
The objective of the invention is at the deficiencies in the prior art, existing direct vaporation-type air source pump water heater defrosting system and hot-water supply system have been done improvement, a kind of air source hot pump water heater of new structure is provided, have applied widely, reliability is high, the all-weather hot water supply system of advantage such as energy-conservation.
In order to realize such purpose, the invention has designed a air source hot pump water heater: main frame is combined with compact structure form very by finned tube evaporator, auxiliary defrost heat exchanger, vapour liquid separator, compressor, double-tube heat exchanger, reservoir, electric expansion valve, reversal valve, magnetic valve, check valve and relevant refrigeration accessory, double-tube heat exchanger is connected with refrigerant line, hot water circulating pipeline respectively, makes cold-producing medium and water carry out heat exchange; Adopt external water circulating pump that the circulation power of hot-water return is provided; The heat storing and heat preserving water tank adopts nonbearing structure, and water inlet pipe is connected with the running water pipe network by entering water electromagnetic valve; Heat storing and heat preserving water tank upper and lower part is provided with the circulating hot water pipe respectively, and is connected with water circulating pump with double-tube heat exchanger, thereby forms closed hot water circulation loop; Controller is made up of control mainboard and line control machine, and mainboard and line control machine master chip all adopt Single-chip Controlling, and the importation is made up of environment temperature sensor, coil temperature sensor, water tank temperature sensor, high low-water level switch, target stream switch etc.; Output is used to control parts such as entering water electromagnetic valve, water circulating pump, compressor, axial flow blower, electric expansion valve, defrost magnetic valve;
In order to guarantee Teat pump boiler security, high efficiency, reliability in actual use, the invention adopts controller to system's operation control automatically, all control functions are realized by single-chip microcomputer, by environment temperature, inflow temperature are gathered calculating in real time, instant electronic expansion valve opening and the motor speed regulated makes refrigeration system operate in optimum state all the time; Simultaneity factor also has multiple protectives such as high pressure, low pressure, excessive discharge temperature, guarantees that system in all cases can both safe operation.
In order to guarantee that Teat pump boiler can reliability service in the low temperature and high relative humidity environment, defrosting timely and effectively, the invention adopts auxiliary defrost heat exchanger to defrost, in running, controller passes through environment temperature, coil temperature, inflow temperature, parameters such as running time are gathered in real time, the whether frosting of real-time judge finned tube evaporator, make system can enter the operation of defrost program timely and effectively, in the defrost running, the compressed machine of cold-producing medium is compressed into high temperature and high pressure gas and enters finned tube evaporator by the reversal valve commutation, refrigerant vapour is condensed into cryogenic high pressure liquid in to the finned tube evaporator defrosting, flash to low-temperature low-pressure refrigerant gas through electric expansion valve and the auxiliary defrost heat exchanger of defrost magnetic valve inflow, be back to compressor through reversal valve more at last, form closed cooling cycle system; The invention stops the cold-producing medium double-tube heat exchanger of flowing through by double-tube heat exchanger back check valve, prevents thermal loss in the defrost process effectively, simultaneously also from solved defrost process middle sleeve heat exchanger by the possibility of bursting by freezing at all.
Really realize fully automatic operation in actual use in order to guarantee hot water supply system, need not manually on duty, the invention is gathered low-water level switch, high water level switch and heat storing and heat preserving water tank temperature in stream switch of the target in the hot water circulating pipeline and the heat storing and heat preserving water tank by controller, the temperature and the water level of hot water in the real-time judge heat storing and heat preserving water tank are controlled system effectively to water circulating pump, entering water electromagnetic valve, main frame.By entering water electromagnetic valve the heat storing and heat preserving water tank is mended cold water earlier, when water level arrived low-water level switch, water circulating pump started, and moves after two minutes target stream switch is detected, and is closed as water flow switch, then starts main frame; When water level is elevated between low-water level switch and the high water level switch, the entering water electromagnetic valve start and stop are controlled according to the heat storing and heat preserving water tank temperature, entering water electromagnetic valve is closed when the heat storing and heat preserving water tank temperature is lower than 44 ℃, along with Teat pump boiler constantly heats water, the heat storing and heat preserving water tank temperature constantly rises, when the heat storing and heat preserving water tank temperature rises to 47 ℃, entering water electromagnetic valve is opened moisturizing, the heat storing and heat preserving water tank temperature constantly descended again when cold water covered, when the heat storing and heat preserving water tank temperature drops to 44 ℃, entering water electromagnetic valve is closed, water in the heat storing and heat preserving water tank is heated when being increased to 47 ℃ again, mends cold water again, so again and again periodic duty, rise to the high water level switch until the heat storing and heat preserving cistern water level, and then the concentrated design temperature aft engine that is heated to is out of service.Adopt this method, guaranteed that water in the heat storing and heat preserving water tank is the domestic hot-water more than 44 ℃ all the time, thereby realized that all-weather provides hot water heat storing and heat preserving water tank segmentation moisturizing, segmentation heating.
Four, description of drawings
Fig. 1 is the system architecture schematic diagram (having omitted controller) of present embodiment.
Fig. 2 is hot-water supply system's schematic diagram of present embodiment.
Among the figure: 1, the heat storing and heat preserving water tank, 2, the circulating hot water pipe, 3, water circulating pump, 4, double-tube heat exchanger, 5, compressor, 6, high-voltage switch gear, 7, low tension switch, 8, vapour liquid separator, 9, reversal valve, 10, finned tube evaporator, 11, aerofoil fan, 12, motor, 13, auxiliary defrost heat exchanger, 14, the defrost magnetic valve, 15, electric expansion valve, 16, check valve, 17, filter, 18, reservoir, 19, the running water water inlet pipe, 20, entering water electromagnetic valve, 21, target stream switch, 22, the high water level switch, 23, low-water level switch, 24, the water tank temperature sensor, 25, the hot water supply pipeline, 26, water filter, 32, main frame.
Five, the specific embodiment
Describe in further detail below in conjunction with embodiment and accompanying drawing thereof technical scheme the invention.
As depicted in figs. 1 and 2, a kind of air source hot pump water heater, comprise the main frame 29 that contains refrigeration system, heat storing and heat preserving water tank 1 and controller, controller adopts Single-chip Controlling, the importation comprises environment temperature sensor, coil temperature sensor, water tank temperature sensor 24, high water level switch 22, low-water level switch 23, target stream switch 21, output is used to control entering water electromagnetic valve 20, water circulating pump 3, compressor 3, motor 12, electric expansion valve 15, defrost magnetic valve 13, on the heat storing and heat preserving water tank 1, the bottom is respectively equipped with circulating hot water pipe 2, and be connected with water circulating pump 3 with double-tube heat exchanger 4, refrigeration system in the main frame 29 is by double-tube heat exchanger 4, compressor 5, high-voltage switch gear 6, low tension switch 7, vapour liquid separator 8, has the reverse not reversal valve 9 of on state characteristic, finned tube evaporator 10, auxiliary defrost heat exchanger 13, defrost magnetic valve 14, electric expansion valve 15, check valve 16, filter 17, reservoir 18 and pipe arrangement are formed a closed refrigerant circuit, reversal valve 9 first is to connect compressor 5 tops by high-voltage switch gear 6, second to connecing double-tube heat exchanger 4 tops, three-dimensional connects auxiliary defrost heat exchanger 13 tops and connects compressor 5 bottoms by vapour liquid separator 8 and low tension switch 7, four-way connects finned tube evaporator 10 tops, finned tube evaporator 10 bottoms are provided with electric expansion valve 15, auxiliary defrost heat exchanger 13 bottoms are provided with defrost magnetic valve 14, double-tube heat exchanger 4 is by reservoir 18, filter 17, check valve 16 connects electric expansion valve 15 and defrost magnetic valve 14, aerofoil fan 11, motor 12 and finned tube evaporator 10 are formed air cooling heat exchanger.
Referring to Fig. 2, heat storing and heat preserving water tank 1 top connects the water charging system of being made up of running water water inlet pipe 19 and entering water electromagnetic valve 20, be connected to target stream switch 21 between heat storing and heat preserving water tank 1 and the double-tube heat exchanger 4, heat storing and heat preserving water tank 1 top is provided with high water level switch 22, the bottom is provided with low-water level switch 23 and water tank temperature sensor 24.
Referring to Fig. 2, be provided with water filter 26 between double-tube heat exchanger 4 and the water circulating pump 3.
Referring to Fig. 2, heat storing and heat preserving water tank 1 bottom connects draws hot water supply pipeline 25.
Referring to Fig. 2, heat storing and heat preserving water tank 1 adopts nonbearing structure.
When normally heating water, cold-producing medium cyclic process such as Fig. 1 show: circulate along the solid arrow direction, the compressed machine 5 of cold-producing medium is compressed into high temperature and high pressure gas and enters double-tube heat exchanger 4 by reversal valve 9, carrying out heat exchange with recirculated water in double-tube heat exchanger 4 heats water, refrigerant vapour is condensed into cryogenic high pressure liquid simultaneously, the filter 17 of flowing through, behind the check valve 16, become low-temp low-pressure liquid to enter finned tube evaporator 10 by electric expansion valve 15 throttlings, in finned tube evaporator 10, carry out heat exchange and flash to low-temperature low-pressure refrigerant gas with compulsory air stream, be back to compressor 5 through reversal valve 9 and vapour liquid separator 8 more at last, form closed cooling cycle system, so again and again recirculated water is heated.Defrost magnetic valve 14 is in closed condition in the process when normally heating water, and auxiliary defrost heat exchanger 13 is inoperative.
In the winter of cold, because environment temperature is lower, and has certain humidity in the air, finned tube evaporator 10 surfaces are because of the frosting of constantly condensing of water in air steam in the Teat pump boiler running, the heat pump heating effect also decreases, this moment, controller passed through environment temperature, coil temperature, parameters such as running time are gathered in real time, make system enter the operation of defrost program timely and effectively, in the defrost running, the compressed machine 5 of cold-producing medium is compressed into high temperature and high pressure gas and enters finned tube evaporator 10 by reversal valve commutation 9, refrigerant vapour is condensed into cryogenic high pressure liquid in to finned tube evaporator 10 defrostings, flash to low-temperature low-pressure refrigerant gas through electric expansion valve 15 and the auxiliary defrost heat exchanger 13 of defrost magnetic valve 14 inflows, be back to compressor 5 through reversal valve 9 more at last, because the characteristic of check valve 9 reverse not conductings, thereby stoping cold-producing medium to flow into 4 pairs of recirculated waters of double-pipe condenser effectively freezes, prevent thermal loss in the defrost process effectively, also fundamentally solved defrost process middle sleeve condenser 4 by the possibility of bursting by freezing simultaneously.
Referring to Fig. 2, the invention hot-water supply system is by heat storing and heat preserving water tank 1, the circulating hot water pipe 2, water filter 26, water circulating pump 3, main frame 27 is formed a hot water cyclesystem, running water water inlet pipe 19 and entering water electromagnetic valve 20 are formed water charging system, high water level switch 22, low-water level switch 23, water tank temperature sensor 24, target stream switch 21 is the controller input parameter, entering water electromagnetic valve 20, water circulating pump 2, main frame 12 is controller output execution unit, by controller to entering water electromagnetic valve 20, water circulating pump 3, main frame 27 Based Intelligent Control have improved the utilization rate of hot water fully when realizing the all-weather hot water supply.
Claims (5)
1, a kind of air source hot pump water heater, comprise the main frame (29) that contains refrigeration system, heat storing and heat preserving water tank (1) and controller, controller adopts Single-chip Controlling, the importation comprises environment temperature sensor, coil temperature sensor, water tank temperature sensor (24), high water level switch (22), low-water level switch (23), target stream switch (21), output is used to control entering water electromagnetic valve (20), water circulating pump (3), compressor (3), motor (12), electric expansion valve (15), defrost magnetic valve (13), on the heat storing and heat preserving water tank (1), the bottom is respectively equipped with circulating hot water pipe (2), and be connected with water circulating pump (3) with double-tube heat exchanger (4), it is characterized in that: the refrigeration system in the main frame (29) is by double-tube heat exchanger (4), compressor (5), high-voltage switch gear (6), low tension switch (7), vapour liquid separator (8), has the reverse not reversal valve of on state characteristic (9), finned tube evaporator (10), auxiliary defrost heat exchanger (13), defrost magnetic valve (14), electric expansion valve (15), check valve (16), filter (17), reservoir (18) and pipe arrangement are formed a closed refrigerant circuit, reversal valve (9) first is to connect compressor (5) top by high-voltage switch gear (6), second to connecing double-tube heat exchanger (4) top, three-dimensional connects auxiliary defrost heat exchanger (13) top and connects compressor (5) bottom by vapour liquid separator (8) and low tension switch (7), four-way connects finned tube evaporator (10) top, finned tube evaporator (10) bottom is provided with electric expansion valve (15), auxiliary defrost heat exchanger (13) bottom is provided with defrost magnetic valve (14), double-tube heat exchanger (4) is by reservoir (18), filter (17), check valve (16) connects electric expansion valve (15) and defrost magnetic valve (14), aerofoil fan (11), motor (12) and finned tube evaporator (10) are formed air cooling heat exchanger.
2, air source hot pump water heater according to claim 1, it is characterized in that: heat storing and heat preserving water tank (1) top connects the water charging system of being made up of running water water inlet pipe (19) and entering water electromagnetic valve (20), be connected to target stream switch (21) between heat storing and heat preserving water tank (1) and the double-tube heat exchanger (4), heat storing and heat preserving water tank (1) top is provided with high water level switch (22), the bottom is provided with low-water level switch (23) and water tank temperature sensor (24).
3, air source hot pump water heater according to claim 1 is characterized in that: be provided with water filter (26) between double-tube heat exchanger (4) and the water circulating pump (3).
4, air source hot pump water heater according to claim 1 is characterized in that: heat storing and heat preserving water tank (1) bottom connects draws hot water supply pipeline (25).
5, air source hot pump water heater according to claim 1 is characterized in that: heat storing and heat preserving water tank (1) adopts nonbearing structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100496869A CN100404980C (en) | 2006-02-27 | 2006-02-27 | Hot-pump water heater with air source |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100496869A CN100404980C (en) | 2006-02-27 | 2006-02-27 | Hot-pump water heater with air source |
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| CN1818498A true CN1818498A (en) | 2006-08-16 |
| CN100404980C CN100404980C (en) | 2008-07-23 |
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| CNB2006100496869A Active CN100404980C (en) | 2006-02-27 | 2006-02-27 | Hot-pump water heater with air source |
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