CN101943471A - Dual heat-source heat-pump hot water device with extremely simple refrigerating loop - Google Patents

Dual heat-source heat-pump hot water device with extremely simple refrigerating loop Download PDF

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Publication number
CN101943471A
CN101943471A CN 200910181300 CN200910181300A CN101943471A CN 101943471 A CN101943471 A CN 101943471A CN 200910181300 CN200910181300 CN 200910181300 CN 200910181300 A CN200910181300 A CN 200910181300A CN 101943471 A CN101943471 A CN 101943471A
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China
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water
hot water
valve
heat
hot
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CN 200910181300
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Chinese (zh)
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陈则韶
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陈则韶
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Priority to CN 200910181300 priority Critical patent/CN101943471A/en
Publication of CN101943471A publication Critical patent/CN101943471A/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency

Abstract

The invention discloses a dual heat-source heat-pump hot water device with an extremely simple refrigerating loop. The device is characterized by mainly comprising a compressor, a hot water condenser, a wind heat exchanger, a water heat exchanger, a four-way valve, a bidirectional throttle and the like, wherein a high pressure inlet of the four-way valve is connected with the outlet of the hot water condenser, and the other three ports thereof are connected with air inlets of the wind heat exchanger, the water heat exchanger and the compressor respectively; other ports of the wind heat exchanger and the water heat exchanger are connected with the bidirectional throttle; the exhaust port of the compressor is connected with the inlet of the hot water condenser, and is connected with high pressure air inlet of an electromagnetic pilot valve of the four-way valve; four functions of manufacturing hot water by utilizing water source or air energy and providing air-conditioning cool water by utilizing air-cooling or heating water can be realized by only switching the four-way valve, defrosting can be performed completely and quickly; and a water pre-heater is added to the device to reclaim the heat of waste hot water. The heat pump has the advantages of dual heat sources compensation and wide application range, has multiple functions, extremely simple structure, extremely convenient switching and over 5 of annual comprehensive energy efficiency ratio, and has great popularization value.

Description

The open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit
Technical field:
The present invention relates to the Teat pump boiler technical field.
Background technology:
Teat pump boiler is a thermal source with air or water, compression by refrigerant vapour is boosted, condensation heat release, throttling reduce, the kind of refrigeration cycle of evaporation heat absorption, the a small amount of high-grade electric energy of compressor consumption, can promote temperature to sensible heat in the air energy of a large amount of zero grades or the low-grade water, the heating domestic water, specific consumption high-grade fuel or electric energy add hot water, have remarkable energy saving effect; The Energy Efficiency Ratio of general Teat pump boiler is 3~4.Present heat-pump water heater mostly is single heat source heat pump.Single heat source heat pump has its limitation, can be the air heat source and thermal pump of single thermal source with air, and heat pump refrigerating agent system pressure is too high when summer high temperature, easily superpressure; Factors such as winter low temperature frosting make defrosting frequent, and the COP value is low, even cisco unity malfunction; The system condition fluctuation also reduces the hot water temperature greatly during with reverse defrosting; Hot gas defrosting, because of there not being other thermal source, defrosting time is long; Disadvantage is to utilize the energy in hydro-thermal sources such as spent hot water, can not freeze water system with the refrigeration in summer and combine, simultaneously cold, hot two-purpose.Can be the heat pump of single thermal source with hydro-thermal, when insufficient water sources, can not heat water, can not satisfy the user hot water demand sometimes, cause commercial loss with air-energy.Though three-way set is a kind of multifunctional heat pump machine that can utilize two thermals source, but relate to complicated circulation handoff technique, referring to " a kind of energy saving tripurpose machine for hot and cold air conditioning and supplying hot water " (patent No.: 00264455.x), " energy-conservation cold-heat air-conditioning, water-heating device of the four seasons " (patent No.: 01263270.8), " air source hot pump water heater of band fair water sleeves heat exchanger storage tank " (patent No.: 200510053315.3), " the heat-pump hot-water unit that the water internal circulation heat-exchanging loop is arranged " (patent No.: 200610085913.3), " increase has the wind source heat pump of frost prevention heat exchanger tube " (patent No.: 200620126599.4).
Many occasions need a large amount of hot water in producing and living, and discharge a large amount of spent hot waters simultaneously, for example publilc baths bathroom, printing and dyeing mill, textile mills, dairy factory, Soft Drinks Plant etc.In these occasion Waste Heat Recovery with heat water with heat pump great economic benefit is arranged." energy storage type heat-pump hot-water boiler heat supplying water device " (patent No.: 01244858.3), a kind of heat pump that has the recovery used heat of heat pump, spent hot water's heat exchanger, electric heater and heat storage water tank was once proposed, but the handoff technique of the double heat source heat pump of this system falls behind, the hot water condenser of heat pump only has the direct current heat exchange mode, and heat exchange efficiency is low.
Summary of the invention:
In order to overcome the above-mentioned deficiency of the existing single Teat pump boiler and the heat-pump water heater of existing two heat source multifunctions, the present invention has designed the open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit, switching mechanism is a cross valve only, just can realize heating the switching of water and finishing thorough defrosting from two thermal source heat absorptions; Also expand the efficient double heat source heat pump hot water apparatus that water preheater is arranged in addition, can more make full use of spent hot water's heat energy.Double heat source heat pump hot water apparatus of the present invention, refrigerant circulation loop is very simple, switches easyly, and it is wide that the energy adapts to, and the heat supply protection is strong, and is multi-functional, and comprehensive Energy Efficiency Ratio can reach 8, and cost is low, the utmost point has promotional value.
The technical solution used in the present invention I is:
The open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit includes the refrigerant circulation loop system, adds hot-water heating system, heat pump endothermic system, signal and control system; Signal system comprises evaporator outlet refrigerant temperature detector, and hot water effluent's hygrosensor is contained in cold-producing medium high and low pressure force detector on compressor exhaust pipe and the air intake duct etc.; Control system comprises cold-producing medium circulation, defrosting, hot water effluent's temperature or controls such as flow, pressure protect; Described pair of thermal source is hydro-thermal source and air heat source, and the hydro-thermal source comprises bathing spent hot water, technology spent hot water, air-conditioning backwater, river, lake water etc.; It is characterized in that:
Described refrigerant circulation loop is by compressor, adds the hot water condenser of hot-water heating system, cross valve, two thermal source heat exchangers of heat pump endothermic system, bidirectional throttle device, compositions such as gas-liquid separator; Described hot water condenser is provided with hot water channel and coolant channel, and the position opposite of the position of hot water import and export and cold-producing medium import and export is pressed counter-flow heat exchanger and arranged; Described two thermal source heat exchangers are hydro-thermal source heat exchanger and air heat source heat exchanger, and the hydro-thermal source heat exchanger is furnished with the warm water water pump, and the air heat source heat exchanger is furnished with fan; The connected mode of refrigerant circulation loop is, the exhaust outlet of compressor is connected with the refrigerant inlet of hot water condenser, its refrigerant outlet is connected with the public high pressure inlet of cross valve, the common low pressure gas outlet of cross valve is connected with the air inlet of knockout drum, and its gas outlet is connected with the air inlet of compressor; Two other interface of cross valve is connected with the port of giving vent to anger of two thermal source heat exchangers respectively, and the port of giving vent to anger is the outlet that the thermal source heat exchanger is done evaporimeter time spent refrigerant gas; Another port of two thermal source heat exchangers is used the bidirectional throttle device, or capillary or two-way heating power expansion valve or two-way electric expansion valve are connected to each other; Fill cold-producing medium in the refrigerant circulation loop; Switch by cross valve, refrigerant circulation loop obtains two kinds of circulation forms; The flow process of first circulating refrigerant is: compressor, hot water condenser, cross valve, hydro-thermal source heat exchanger, bidirectional throttle device, air heat source heat exchanger, cross valve, gas-liquid separator, compressor; The flow process of second circulating refrigerant is: compressor, hot water condenser, cross valve, air heat source heat exchanger, bidirectional throttle device, hydro-thermal source heat exchanger, cross valve, gas-liquid separator, compressor; First circulation heats water from the air heat source heat absorption, and second circulation heats water from the heat absorption of hydro-thermal source; Second circulation also can be made defrost cycle.
Described cross valve, it is a kind of Pneumatic four-way valve that solenoid pilot valve is arranged, the effective tube connector of public high pressure admission of its solenoid pilot valve is connected on the compressor exhaust pipe of refrigerant circulation loop, and the common low pressure blast pipe of its solenoid pilot valve is connected on the common low pressure escape pipe of cross valve itself.
The described hot water condenser that adds hot-water heating system is coaxial heat exchanger or plate type heat exchanger or double pipe heat exchanger, or the two-part heat exchanger; Described two-part heat exchanger, inlet segment are circulation section in the hot water, and water exit end is a hot water direct current gain of heat section, into and out of the ratio of two sections heat exchange areas between 0.7/0.3 and 0.8/0.28; Offer the bypass recycling outlet on two sections water channel tube connectors.
The described hot-water heating system that adds, or comprise water preheater and hot water condenser; Described water preheater is a water-water heat exchanger, is dismountable plate type heat exchanger, establishes water purification road and useless warm water road, countercurrent flow; The water purification entery and delivery port of water preheater is connected with the supplementing water water inlet pipe of running water pipe, hot water condenser respectively; The useless warm water inlet tube and outlet tube of water preheater is connected with the water inlet of warm water pump outlet, hydro-thermal source heat exchanger respectively; The warm water pump water inlet inserts the spent hot water pond; The described hot water condenser that adds hot-water heating system is coaxial heat exchanger or plate type heat exchanger or double pipe heat exchanger, or the two-part heat exchanger; Described water preheater that adds hot-water heating system and hot water condenser or install with main frame one place, or with the main frame split, be installed on indoor and outdoor respectively; The split connector of refrigerant loop is selected in the cold-producing medium import and export of hot water condenser, the public high pressure inlet of the compressor air-discharging mouth of pipe and cross valve, and four connectors all are equipped with angle valve, are linked to be refrigerant circulation loop with two tube connectors after the partial installation;
Four kinds of modes are adopted in the heat exchange of the water stream channel of the described hot water condenser that adds hot-water heating system, wherein:
First kind is the direct current directly-heated type, is rill speed heat convection formula, and makeup water stream is through the superheated water condenser, exports after directly being heated to the leaving water temperature of setting; The hot water flow control valve is housed, the control output flow on the hot water delivery pipe of hot water condenser; Water intaking valve and check valve are housed on the supplementing water water inlet pipe;
Second kind is gradually hot type of complete alternation, be big flow velocity Turbulent Convection Heat Transfer formula, be linked to be hot water condenser heating loop, water route in regular turn by hot water condenser, hot water delivery pipe, client's hot water storage tank, water circulating pump water inlet pipe, water circulating pump, circulating pump discharge pipe, hot water condenser; Supplementing water is injected client's hot water storage tank, adopt water circulating pump that water is pumped to the heating of hot water condenser from the hot water storage tank after, foldback backheat water storage tank again, the repeated multiple times circulation, the water temperature of water tank is raised to setting value gradually;
The third is that the intermittent flow constant temperature goes out ability of swimming, is big flow velocity Turbulent Convection Heat Transfer formula, and hot water condenser heating loop, water route comprises: hot water condenser, water circulating pump, little water tank and hot water storage tank; The water inlet of hot water condenser is arranged with supplementing water water inlet pipe and hot water circuit water inlet pipe, dress replenishes water valve and check valve on the supplementing water water inlet pipe, its delivery port configuration hot water delivery pipe and hot water circuit outlet pipe, and hot water flow control valve and circulating-water valve are housed respectively; The hot water delivery pipe is connected with hot water storage tank's hot water inlet; Little water tank is provided with the pressure-equalizing pipe that circulation water inlet and atmosphere are communicated with at the top, the bottom is provided with circulating outlet and is connected with the water circulating pump water inlet pipe, and case inner top and bottom are provided with water level and following water level detector; Form hot water condenser-little water tank heating loop, water route by water circulating pump, hot water circuit water inlet pipe, hot water condenser, hot water circuit outlet pipe, little water tank, water circulating pump water inlet pipe etc.; The beginning supplementing water is filled with little water tank, after then adopting water circulating pump that water is pumped the heating of hot water condenser from little water tank, foldback returns little water tank again, the repeated multiple times circulation, after the water temperature of little water tank is raised to the leaving water temperature setting value, close the circulating-water valve on the hot water circuit outlet pipe, open the hot water delivery pipe and go up the hot water flow control valve, the water of little water tank is delivered to client's hot water storage tank with water circulating pump; When little cistern water level drops to water level, open circulating-water valve, close the hot water flow control valve, more again to little water tank water filling, full until water;
The 4th kind is interior circulation constant temperature continuous effluent formula, is local big flow velocity heat convection formula, and the described hot-water heating system that adds comprises two-part hot water condenser, water circulating pump, circulating reflux tube and hot water storage tank; The bypass recycling outlet of two-part hot water condenser is connected with circulating reflux tube top water inlet, on the bypass recycling outlet circulating-water valve is housed, circulating reflux tube bottom delivery port is connected with the water circulating pump water inlet pipe, the water circulating pump delivery port is connected with the circulating water inlet of hot water condenser, circulating water loop in constituting; Supplementing water enters the hot water condenser by the supplementing water water inlet pipe, converge with recirculated water, circulation section is heated back branch two-way in the hot water of hot water condenser, one tunnel flow identical with additional inflow, through hot water direct current gain of heat section, after being heated to the leaving water temperature setting value again, flow to the hot water storage tank by the hot water delivery pipe; All the other moisture flow to the bypass recycling outlet, get back to the circulating reflux tube, recycle; By regulating the open degree of hot water output flow control valve, regulate inflow, make hot water effluent's temperature reach setting value.
Described signal and control system, comprise two evaporator outlet refrigerant temperature detectors that are disposed in two thermal source heat exchangers and the close thermal source heat exchanger place of cross valve connecting line respectively, be installed in the hot water effluent's hygrosensor on the hot water condenser hot water outlet pipe main, be contained in the warm water leaving water temperature detector of the hydro-thermal source heat exchanger on the water outlet pipe of hydro-thermal source heat exchanger, first and second loop control of cold-producing medium, defrosting control etc.; Described signal and control system target are in realizing five kinds of function mode: heat water from the air heat source heat absorption, heat water from the heat absorption of hydro-thermal source, defrosting provides air conditioning water, and air conditioning and heating water is provided; Heat water and heating mode when conflict, the preferential control principle of employing hot water; Heat water and defrosting mode when conflict, adopt the preferential control principle that defrosts; Heat water mode from the air heat source heat absorption: adopt cold-producing medium first circulation, compressor, fan and cross valve energising, the warm water Pump Failure, the public high pressure inlet of cross valve and the conducting of hydro-thermal source heat exchanger, the additional water valve of hot water is opened, the water circulating pump energising is started; Heat water mode from hydro-thermal source heat absorption: adopt cold-producing medium second circulation, compressor, the energising of warm water water pump, fan and cross valve outage, the public high pressure inlet of cross valve and the conducting of air heat source heat exchanger, hot water replenishes that water valve leaves, water circulating pump is switched on starts; Defrosting mode: comprise that defrosting starting, defrost cycle and defrosting finish three control procedures; Heat pump assembly is when first periodic duty, when the evaporator outlet refrigerant temperature that runs into the air heat source heat exchanger is reduced to the desired temperature that needs defrosting, the defrosting starting, system automatically switches to cold-producing medium second circulation, also as defrost cycle, carry out the defrosting priority principle, close hot water and replenish water valve, water circulating pump outage, defrost fast; When the refrigerant temperature of air heat source heat exchanger was elevated to the desired temperature of defrosting end, defrosting finished, and automatically reverted to cold-producing medium first circulation, and heat absorption heats water mode from air; Air conditioning water is provided: when adopting the full and temperature of the water of hot water storage tank under the air-conditioning backwater condition to reach setting value in the hydro-thermal source, continue to adopt cold-producing medium second circulation, and fan energising starting, replenish water valve, water circulating pump outage and close hot water; Air conditioning and heating water mode is provided, when adopting the full and temperature of the water of hot water storage tank under the air-conditioning backwater condition to reach setting value in the hydro-thermal source, continues to adopt cold-producing medium first circulation, and warm water water pump energising starting, water valve, water circulating pump outage replenished and close hot water; The difference of the temperature value that the hot water output temperature records according to hot water effluent's hygrosensor and the leaving water temperature value of setting, the open degree of control hot water flow control valve is regulated and is replenished inflow and realize.
The useless warm water loop of described hydro-thermal source heat exchanger and water preheater, or have additional dirt backwash loop; The backwash loop with to use three L type two position three-way valves being connected of useless warm water loop, its connected mode is: the common interface of first, second and third triple valve is connected with the useless warm water outlet of the useless warm water import of the import of warm water water pump, water preheater, hydro-thermal source heat exchanger respectively; First path of first and third two triple valves connects the mouth of pipe, introduces useless warm water pond respectively, enters the ditch; The alternate path that first path of second triple valve connects the mouth of pipe, the 3rd triple valve connects the mouth of pipe, connects with tee pipe coupling with the mouth of pipe that is connected of warm water water pump; The alternate path of first and second triple valve connects the mouth of pipe and is connected with tee pipe coupling with the abluent feed liquor mouth of pipe; Also pick out the bypass blow-off pipe on the alternate path tube connector of first triple valve, blowoff valve is housed on blow-off pipe; On the abluent feed tube, abluent injection valve and abluent fluid infusion jar are housed; Useless warm water active channel is walked first path of three triple valves, and useless warm water flow process is: useless warm water pond, warm water water pump, water preheater, hydro-thermal source heat exchanger, gutter; The alternate path of three triple valves is walked in the backwash loop, and the flushing water flow process is: warm water water pump, hydro-thermal source heat exchanger, water preheater, or flow back to the warm water water pump, wash cycles, or open blowoff valve, enter the gutter.
The technical solution used in the present invention II is:
The open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit of the present invention is two air heat source and thermal pump hot water apparatus of indoor and outdoors air heat source, includes the refrigerant circulation loop system, adds hot-water heating system, heat pump endothermic system, signal and control system; Signal system comprises evaporator outlet refrigerant temperature detector, and hot water effluent's hygrosensor is contained in refrigerant pressure detector on the compressor exhaust pipe etc.; Control system comprises controls such as cold-producing medium circulation, defrosting, hot water effluent's temperature, pressure protect; It is characterized in that:
Described pair of thermal source is room air thermal source and outdoor air thermal source; Described refrigerant circulation loop is by compressor, adds the hot water condenser of hot-water heating system, cross valve, two thermal source heat exchangers of heat pump endothermic system, bidirectional throttle device, compositions such as gas-liquid separator; Described hot water condenser is provided with hot water channel and coolant channel, and the position of the hot water import and export of hot water condenser and the position opposite of cold-producing medium import and export are pressed counter-flow heat exchanger and arranged; Described two thermal source heat exchangers are room air thermal source heat exchanger and outdoor air thermal source heat exchanger, are furnished with indoor fan and outdoor fan respectively; The connected mode of refrigerant circulation loop is: the exhaust outlet of compressor is connected with the refrigerant inlet of hot water condenser, its refrigerant outlet is connected with the public high pressure inlet of cross valve, the common low pressure gas outlet of cross valve is connected with the air inlet of knockout drum, and its gas outlet is connected with the air inlet of compressor; Two other interface of cross valve is connected with the port of giving vent to anger of two thermal source heat exchangers respectively, and the port of giving vent to anger is the outlet that the thermal source heat exchanger is done evaporimeter time spent refrigerant gas; Another port of two thermal source heat exchangers is used the bidirectional throttle device, or capillary or two-way heating power expansion valve or two-way electric expansion valve are connected to each other; Fill cold-producing medium in the refrigerant circulation loop; Switch by cross valve, refrigerant circulation loop obtains two kinds of circulation forms; First circulation process is: compressor, hot water condenser, cross valve, room air thermal source heat exchanger, bidirectional throttle device, outdoor air thermal source heat exchanger, cross valve, gas-liquid separator, compressor; Second circulation process is: compressor, hot water condenser, cross valve, outdoor air thermal source heat exchanger, bidirectional throttle device, room air thermal source heat exchanger, cross valve, gas-liquid separator, compressor; First circulation heats water from the heat absorption of outdoor air thermal source, and second circulation heats water from the heat absorption of room air thermal source, and second circulation also can be made defrost cycle.
Described cross valve, it is a kind of Pneumatic four-way valve that solenoid pilot valve is arranged, the effective tube connector of public high pressure admission of its solenoid pilot valve is connected on the compressor exhaust pipe of refrigerant circulation loop, and the common low pressure blast pipe of its solenoid pilot valve is connected on the common low pressure escape pipe of cross valve itself.
The described hot water condenser that adds hot-water heating system adopts three kinds of heat exchange forms to make the water heating, wherein:
First kind of hot water condenser is the heat exchanger of placing band fair water sleeves helix tube in heat storage water tank, the cold-producing medium forced-convection heat transfer in the helix tube, the water heat transfer free convection in the confined space in the outer fair water sleeves of helix tube;
Perhaps, second kind of hot water condenser is the heat exchanger of placing helix tube in heat storage water tank, the cold-producing medium forced-convection heat transfer in the helix tube, the outer water heat transfer free convection in the water tank large space of helix tube;
Perhaps, the third hot water condenser is coaxial heat exchanger, or plate type heat exchanger, or double pipe heat exchanger, and and heat storage water tank, water circulating pump is formed gradually hot type mode of heating of complete alternation, its connected mode is that hot water condenser delivery port is connected with heat storage water tank top circulation water inlet, the circulating outlet of heat storage water tank bottom is connected with the water circulating pump water inlet, the water circulating pump delivery port is connected with the water inlet of hot water condenser bottom, the water inlet of heat storage water tank bottom is connected with running water pipe, water check valve and water intaking valve are housed on the water inlet pipe, and the hot water outlet at heat storage water tank top is connected with client's hot-water line; Water circulating pump starts, the aquaporin forced-convection heat transfer of hot water condenser.
Described signal and control system, comprise two evaporator outlet refrigerant temperature detectors that are disposed in two thermal source heat exchangers and the close thermal source heat exchanger place of cross valve connecting line respectively, be contained in the hot water effluent's hygrosensor on the hot water condenser hot water outlet pipe, first and second loop control of cold-producing medium, defrosting control etc.; Described signal and control system target are in realizing five kinds of function mode: heat water from the heat absorption of outdoor air thermal source, heat water from the heat absorption of room air thermal source, defrosting is to the indoor cold air that provides, to the indoor warm braw that provides; Heating water and heating mode when conflict, adopt the preferential control principle of hot water, heating water when conflicting, the employing preferential control principle that defrosts with defrosting mode; Heat water mode from the heat absorption of outdoor air thermal source: adopt cold-producing medium first circulation, compressor, outdoor fan and cross valve energising, the indoor fan outage, the public high pressure inlet of cross valve and the conducting of room air thermal source heat exchanger, hot water replenishes water valve and opens, when the hot water condenser adopts the third complete alternation gradually during the hot type mode of heating, the water circulating pump energising is started; Heat water mode from the heat absorption of room air thermal source: adopt cold-producing medium second circulation, compressor, indoor fan energising, outdoor fan and cross valve outage, the public high pressure inlet of cross valve and the conducting of outdoor air thermal source heat exchanger, hot water replenishes water valve and opens, and when the hot water condenser adopts complete alternation gradually during the hot type mode of heating, the water circulating pump energising is started, when water temperature reached setting value in the water tank, water circulating pump had a power failure; Defrosting: comprise that defrosting starting, defrost cycle and defrosting finish three control procedures; When the evaporator outlet refrigerant temperature of outdoor air thermal source heat exchanger is reduced to when needing the defrosting desired temperature, the defrosting starting, system automatically switches to second circulation, also make defrost cycle, carry out the defrosting priority principle, close hot water and replenish water valve, water circulating pump outage, defrost fast; When the refrigerant temperature of empty outer air thermal source heat exchanger was elevated to defrosting end temp setting value, defrosting finished, and automatically reverted to cold-producing medium first circulation, and heat absorption heats water from the outdoor air thermal source; To the indoor cold air mode that provides: when hot water storage tank's coolant-temperature gage reaches setting value, continue to adopt cold-producing medium second circulation, and outdoor fan energising work, replenish water valve, water circulating pump outage and close hot water; To the indoor warm braw mode that provides: when hot water storage tank's coolant-temperature gage reaches setting value, continue to adopt cold-producing medium first circulation, and indoor fan energising work, replenish water valve, water circulating pump outage and close hot water; Leaving water temperature value and indoor temperature that the hot water output temperature reaches setting reach when setting value, and shut down.
In sum, the present invention has following advantage:
The open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit of the present invention, its creative maximum inventive point is with a four way solenoid valve and a bidirectional throttle device, three heat exchangers have been connected, cooperate a compressor, just can be from two kinds or two geothermal source, for example from the hydro-thermal source or air heat source absorb heat and heat water, and possess multiple function, refrigeration, freeze and heat water, heat water; Solved two thermals source and switched and the defrosting problem, cracked that the refrigeration cycle refrigerant amount of Multisource heat pump complex structure, different heat sources is difficult coordinates coupling and the air heat source and thermal pump defrosting can reduce the temperature that is heated water or defrost a halfway world-class difficult problem; The present invention is ingenious to be in the switching by a four way solenoid valve, cooperate the bidirectional throttle device, function and the pressure state of two heat exchangers in refrigerating circuit exchanged, be that evaporimeter and condenser or subcooler or high pressure reservoir exchange, low pressure and high pressure conditions exchange, cold-producing medium in the loop all participates in periodic duty, discrete circulatory system cold-producing medium does not take place may remain in a standstill in the phenomenon of certain heat exchanger, and the refrigerant amount coupling can not change; Winter frost removing absorbs heat from the spent hot water, with the high pressure, high temperature refrigerant defrosting, does not promptly reduce the temperature that is heated water, can thoroughly defrost fast again; Although the function of heat pump assembly of the present invention is many, can utilize two thermals source, structure is all simpler than the multifunctional heat pump water heating machine of various schemes, and is simple to comparing with single air heat source and thermal pump machine; It solves the deficiency of single source heat pump, realizes thermal source complementary and can select optimum thermal source work, satisfies the user hot water demand to greatest extent.
The present invention has adopted water preheater and water source heat exchanger two-stage to utilize spent hot water's mode, and the heat recovery rate that makes the spent hot water is more than 85%; Can hot and coldly fully utilize when doing the hydro-thermal source with the air-conditioning backwater, Energy Efficiency Ratio is good; And be furnished with dirt back flush loop, and can take out stains easily and effectively, keep water preheater water source efficiency of heat exchanger.
The design of two-part hot water condenser of the present invention, circular flow improves the heat exchange efficiency of hot water condenser in utilizing; Utilize hot direct current gain of heat section, when promptly guaranteeing the water outlet of hot water continuous constant temperature, circulating water temperature is not too high in making again, the overall efficiency height.
Of the present invention pair of thermal source heat exchanger can utilize thermal source complementary, utilized the advantage of different heat sources to greatest extent; Can be according to ambient air temperature, water source temperature and water amount, select the suitable heat source operation, the assurance device highly effective and safe can both be normal when very high and winter temperature is very low at summer temperature, is difficult for superpressure.
Two air heat source and thermal pump hot water apparatus of indoor and outdoors air heat source of the present invention have cold, warm air conditioner, and double heat source heat pump heats the function of water, and structure is extremely simple; It is also very thorough to defrost.It is the best-value technology of family expenses three-way set.
In a word, heat-pump water heater of the present invention has utilized the different heat sources advantage to greatest extent, gives full play to the efficient of equipment, combines frigiopyretic dysentery usefulness, has solved various efficient and the safe operation problems of influencing, and structure is simplified most, has wide market prospects.
Description of drawings
Fig. 1 is the open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit of the present invention embodiment 1, also is the refrigerant circulation loop basic structure schematic diagram of embodiment 2,3 and 4.
Fig. 2 is the structure principle chart of the open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit of the present invention embodiment 2, and its hot water condenser is a two-part hot water condenser.
Fig. 3 is the structure principle chart of the open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit of the present invention embodiment 3, and its heat hot water heat-exchange system has increased water preheater.
Fig. 4 is the structure principle chart of the open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit of the present invention embodiment 4, and its heat hot water heat-exchange system has adopted two two-part hot water condenser and water preheaters.
Fig. 5 is the structure principle chart of the open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit of the present invention embodiment 5, and the water route of its heating water preheater and hydro-thermal source heat exchanger is furnished with dirt back flush loop.
Fig. 6 is the structure principle chart of the open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit of the present invention embodiment 6, and two thermals source are indoor and outdoor air heat sources, and its hot water condenser is heat storage water tank band fair water sleeves coil exchanger.
Fig. 7 is the structure principle chart of the open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit of the present invention embodiment 7, and two thermals source are indoor and outdoor air heat sources, and its hot water condenser is coaxial heat exchanger and heat storage water tank and circulating pump, forced-convection heat transfer.
Specific embodiment:
Further describe the structure and the operation principle of the open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit of the present invention by embodiment below in conjunction with accompanying drawing.But content of the present invention is not limited only to shown in the accompanying drawing.
Structural relation and the operation principle of embodiment 1 are illustrated by Fig. 1.
The device of embodiment 1 is a kind of double heat source heat pump hot water apparatus that adopts the utmost point simplification of hydro-thermal source or air heat source, includes the refrigerant circulation loop system, adds hot-water heating system, heat pump endothermic system, signal and control system; Signal system comprises evaporator outlet refrigerant temperature detector, and hot water effluent's temperature probe T 1 is contained in cold-producing medium high and low pressure force detector P1, P2 etc. on compressor 1 blast pipe and the air intake duct; Control system comprises cold-producing medium circulation, defrosting, hot water effluent's temperature or controls such as flow, pressure protect; Described refrigerant circulation loop is by compressor 1, adds the hot water condenser 2 of hot-water heating system, cross valve 3, two thermal source heat exchangers of heat pump endothermic system, bidirectional throttle device 5, gas-liquid separator 8 compositions such as grade; Described hot water condenser is provided with hot water channel and coolant channel, and the position opposite of the position of hot water import and export and cold-producing medium import and export is pressed counter-flow heat exchanger and arranged; Described two thermal source heat exchangers are hydro-thermal source heat exchanger 4 and air heat source heat exchanger 6, and the hydro-thermal source heat exchanger is furnished with warm water water pump 9, and the air heat source heat exchanger is furnished with fan 7; The connected mode of refrigerant circulation loop is, the exhaust outlet of compressor is connected with the refrigerant inlet of hot water condenser, its refrigerant outlet is connected with the public high pressure inlet of cross valve, the common low pressure gas outlet of cross valve is connected with the air inlet of knockout drum, and its gas outlet is connected with the air inlet of compressor; Two other interface of cross valve is connected with the port of giving vent to anger of two thermal source heat exchangers respectively, and the port of giving vent to anger is the outlet that the thermal source heat exchanger is done evaporimeter time spent refrigerant gas; Another port of two thermal source heat exchangers is connected to each other with bidirectional throttle device capillaceous; Fill cold-producing medium in the refrigerant circulation loop; Switch by cross valve, refrigerant circulation loop obtains two kinds of circulation forms; The flow process of first circulating refrigerant is; : compressor 1, hot water condenser 2, cross valve 3, hydro-thermal source heat exchanger 4, bidirectional throttle device 5 capillaceous, air heat source heat exchanger 6, cross valve 3, gas-liquid separator 8, compressor 1 is referring among Fig. 1 shown in the fine line arrow; The flow process of second circulating refrigerant is: compressor, hot water condenser, cross valve, air heat source heat exchanger 6, bidirectional throttle device capillaceous, hydro-thermal source heat exchanger 4, cross valve, gas-liquid separator, compressor, the cold-producing medium flow process after the hot water condenser referring to Fig. 1 in shown in the thin broken line arrow;
Hot water condenser and hydro-thermal source heat exchanger all are in high pressure conditions in first circulation, be equivalent to two condenser series connection, heat under the preferential control of water in execution, water circulating pump 10 start or the water intaking valve of supplementing water open-minded, but the warm water water pump 9 of hydro-thermal source heat exchanger stops, so be hot water condenser heat exchange heat hot water, and the hydro-thermal source heat exchanger is equivalent to reservoir, not heat exchange substantially; After high pressure liquid refrigerant passes through the step-down of bidirectional throttle device isenthalpic throttling, flow to the air heat source heat exchanger, this moment, the air heat source heat exchanger was made evaporimeter usefulness, fan starts, cold-producing medium constantly absorbs heat in the air in a steady stream and evaporates, be inhaled into compressor compresses again, continue circulation, carry out from the air heat source heat absorption and heat water; When hot water storage tank's water is full, and water temperature is closed water circulating pump 10 and water intaking valve or outlet valve F2, the not heat exchange of hot water condenser when reaching setting value; Adopt under the air-conditioning backwater condition in the hydro-thermal source, air conditioning and heating water is provided if desired, the 9 energising startings of warm water water pump, hydro-thermal source heat exchanger 4 is made condenser usefulness, the part heat of the superheated vapor of a hot water condenser absorption refrigeration agent;
Hot water condenser and air heat source heat exchanger all are in high pressure conditions in second circulation, be equivalent to two condenser series connection, heat under the preferential control of water in execution, water circulating pump 10 start or the water intaking valve of supplementing water open-minded, but the fan 7 of air heat source heat exchanger stops, so be hot water condenser heat exchange heat hot water, and the air heat source heat exchanger is equivalent to reservoir, not heat exchange substantially; After high pressure liquid refrigerant passes through the step-down of bidirectional throttle device isenthalpic throttling, flow to hydro-thermal source heat exchanger 4, this moment, the hydro-thermal source heat exchanger was made evaporimeter usefulness, warm water water pump 9 starts, cold-producing medium constantly absorbs the heat in hydro-thermal source and evaporates, and is inhaled into compressor compresses again, continues circulation, execution heats water from the heat absorption of hydro-thermal source, makes the water for cooling in hydro-thermal source simultaneously; If use the air-conditioning backwater to be the hydro-thermal source, then can make air conditioning water simultaneously heating water, cold, hot two-purpose, Energy Efficiency Ratio is more than 7; When hot water storage tank's water is full, and water temperature is closed water circulating pump and water intaking valve or outlet valve, the not heat exchange of hot water condenser when reaching setting value; Adopt under the air-conditioning backwater condition in the hydro-thermal source, air conditioning water is provided if desired, fan 7 startings, air heat source heat exchanger 6 is made condenser usefulness, no heat is discharged in the air goes, the part heat of the superheated vapor of a hot water condenser absorption refrigeration agent.
Double heat source heat pump carry out first and second circulation switch in cross valve 3 are Primary Components, the cross valve of the air conditioner in market is gas-gas cross valve, can not be directly as the usefulness of liquid of the present invention-gas cross valve; The cross valve 3 that the present invention is used, it is a kind of Pneumatic four-way valve that solenoid pilot valve D is arranged, the public high-pressure pipe d1 of its solenoid pilot valve is connected to tube connector on compressor 1 blast pipe of refrigerant loop, and the common low pressure blast pipe d2 of its solenoid pilot valve is connected on the common low pressure escape pipe of cross valve itself; It can use gas-gas cross valve transformation of the way, promptly the tube connector of the public high-pressure pipe of the public high-pressure pipe d1 of its solenoid pilot valve and main valve is disconnected, the fracture of main valve is obturaged, public high-pressure pipe d1 tube connector its solenoid pilot valve during use is connected on compressor 1 blast pipe of refrigerant loop, gets final product.
The hot-water heating system that adds of heat-pump water heater also is the ten minutes key equipment, and its heat exchange effect directly influences heat pump efficiency.The hot water condenser that adds hot-water heating system of the embodiment of the invention adopts coaxial heat exchanger, and hot water flow control valve F2 is housed on its hot water delivery pipe, the control output flow; Dispose the two-way water inlet pipe on the water inlet, the one tunnel connects water circulating pump 10, and another road connects the supplementing water water inlet pipe, and water intaking valve F1 and check valve D1 are housed on the supplementing water water inlet pipe; The water circulating pump water inlet pipe can be connected with user's water tank, utilizes water circulating pump that the water of water tank is pumped to forced-convection heat transfer in the hot water condenser, good effect of heat exchange.So extremely adopt gradually hot type of complete alternation, or adopt the intermittent flow constant temperature to go out ability of swimming, select for use as the case may be by the user; During without the cycle heat exchange mode, water circulating pump stops, and also can use directly-heated type instead, and in summer with when preheating water is arranged, this situation can be used.
The signal of the device of embodiment 1 and control system, comprise two evaporator outlet refrigerant temperature detector T2, T3 that are disposed in two thermal source heat exchangers and the close thermal source heat exchanger place of cross valve connecting line respectively, be installed in the hot water effluent's temperature probe T 1 on the hot water condenser hot water outlet pipe main, be contained in the warm water leaving water temperature detector T4 of the hydro-thermal source heat exchanger on the water outlet pipe of hydro-thermal source heat exchanger, first and second loop control of cold-producing medium, defrosting control etc.; Signal and control system target are in realizing five kinds of function mode: heat water from the air heat source heat absorption, heat water from the heat absorption of hydro-thermal source, defrosting provides air conditioning water, and air conditioning and heating water is provided.Except defrosting control, the control front of all the other four kinds of mode has all illustrated.
Defrosting mode: comprise that defrosting starting, defrost cycle and defrosting finish three control procedures; Heat pump assembly is when first periodic duty, running into the temperature that the evaporator outlet refrigerant temperature detector T3 of air heat source heat exchanger records is reduced to when needing the defrosting desired temperature, the defrosting starting, system automatically switches to second circulation, also as defrost cycle, carry out the defrosting priority principle, close hot water and replenish water valve F1, water circulating pump 10 outages, defrost fast; When the refrigerant temperature of air heat source heat exchanger was elevated to defrosting end temp setting value, defrosting finished, and automatically reverts to first circulation, and heat absorption heats water mode from air.
The difference of the temperature value that the hot water output temperature records according to hot water effluent's hygrosensor and the leaving water temperature value of setting, the open degree of control hot water flow control valve is regulated and is replenished inflow and realize.
Structural relation and the operation principle of embodiment 2 are illustrated by Fig. 2.
The difference of the device of the device of embodiment 2 and embodiment shown in Figure 11 is, the described hot water condenser that adds hot-water heating system is a two-part hot water condenser, the cold-producing medium section of flowing to is hot water direct current gain of heat section 2a, it is circulation section 2b in the hot water that cold-producing medium flows out section, circulating water outlet is on two sections water channel tube connectors, and the ratio of the heat exchange area of circulation section is between 0.3/0.7 and 0.2/0.8 in hot water direct current gain of heat section and the hot water.Circulation constant temperature continuous effluent formula in adopting.Add hot-water heating system and comprise two-part hot water condenser, water circulating pump, circulating reflux tube 11 and the supporting hot water storage tank of client; The hot water circuit outlet pipe of two-part hot water condenser is connected with circulating reflux tube top water inlet, on the hot water circuit outlet pipe circulating-water valve is housed, circulating reflux tube bottom delivery port is connected with the water circulating pump water inlet pipe, the water circulating pump delivery port is connected with the circulating water inlet of hot water condenser, circulating water loop in constituting; Supplementing water enters the hot water condenser by the supplementing water water inlet pipe, converge with recirculated water, circulation section 2b is heated back branch two-way in the hot water of hot water condenser, one tunnel flow identical with additional inflow, through hot water direct current gain of heat section 2a, after being heated to the leaving water temperature setting value again, flow to the hot water storage tank by the hot water delivery pipe; All the other moisture flow to the hot water circuit outlet pipe, to the circulating reflux tube, recycle; By regulating the open degree of hot water output flow control valve F2, regulate inflow, make hot water effluent's temperature reach setting value.
Structural relation and the operation principle of embodiment 3 are illustrated that by Fig. 3 its heat hot water heat-exchange system has increased water preheater.
The refrigerant circulation loop system of the device of embodiment 3 is identical with the device refrigerant circulation loop system of embodiment 1 shown in Figure 1, but adopt the split connected mode, the split connector of refrigerant loop is selected in the cold-producing medium import and export of hot water condenser, the public high pressure inlet of the compressor air-discharging mouth of pipe and cross valve, four connectors all are equipped with angle valve J1, J2, J3 and J4, are linked to be refrigerant circulation loop with two tube connector L1, L2 after the partial installation;
The described water route that adds hot-water heating system has increased water preheater 12 than the water route of embodiment 1, and water preheater is a water-water heat exchanger, is dismountable plate type heat exchanger, establishes water purification road and useless warm water road, countercurrent flow; The water purification entery and delivery port of water preheater is connected with the supplementing water water inlet pipe of running water pipe, hot water condenser respectively; The useless warm water inlet tube and outlet tube of water preheater is connected with the water inlet of warm water water pump 9 delivery ports, hydro-thermal source heat exchanger 4 respectively; The warm water pump water inlet inserts the spent hot water pond; The heat exchange of hot water condenser is to adopt the third intermittent flow constant temperature to go out ability of swimming.
The third intermittent flow constant temperature that is adopted goes out ability of swimming, is big flow velocity Turbulent Convection Heat Transfer formula; Hot water condenser heating loop, water route comprises: hot water condenser 2, water circulating pump 10, little water tank 13 (breaking shown in the line square frame, by user's autogamy among Fig. 3) and hot water storage tank's (also by user's autogamy); The water inlet of hot water condenser is arranged with supplementing water water inlet pipe and hot water circuit water inlet pipe, install on the supplementing water water inlet pipe and replenish water valve F1 and check valve D1, its delivery port configuration hot water delivery pipe and hot water circuit outlet pipe, and hot water flow control valve F2 and circulating-water valve F3 are housed respectively; The hot water delivery pipe is connected with hot water storage tank's hot water inlet; Little water tank 13 is provided with the pressure-equalizing pipe that circulation water inlet and atmosphere are communicated with at the top, the bottom is provided with circulating outlet and is connected with the water circulating pump water inlet pipe, and case inner top and bottom are provided with water level and following water level detector L1 and L2; Form hot water condenser-little water tank heating loop, water route by water circulating pump 10, hot water circuit water inlet pipe, hot water condenser 2, hot water circuit outlet pipe, little water tank 13, water circulating pump water inlet pipe etc.; The beginning supplementing water is filled with little water tank, then start water circulating pump, after water pumped hot water condenser heating from little water tank, foldback returns little water tank again, repeated multiple times circulation, the water temperature of little water tank are closed the circulating-water valve on the hot water circuit outlet pipe after being raised to the leaving water temperature setting value, open the hot water delivery pipe and go up hot water flow control valve F2, the water of little water tank is delivered to client's hot water storage tank with water circulating pump 10; When little cistern water level drops to water level, open circulating-water valve, close the hot water flow control valve, more again to little water tank water filling, full until water.
Structural relation and the operation principle of embodiment 4 are illustrated that by Fig. 4 its heat hot water heat-exchange system has adopted two two-part hot water condenser and water preheaters.
The device refrigerant circulation loop system of the refrigerant circulation loop system of the device of embodiment 4 and embodiment 2 shown in Figure 2 is identical, and the described water route that adds hot-water heating system has increased water preheater 12 than the water route of embodiment 2.Described water preheater is a water-water heat exchanger and the water preheater structure of embodiment 3 and identical to the connected mode of hot water condenser.
Structural relation and the operation principle of embodiment 5 are illustrated that by Fig. 5 the water route of its heating water preheater and hydro-thermal source heat exchanger is furnished with dirt back flush loop.
The useless warm water loop of described hydro-thermal source heat exchanger and water preheater, or have additional dirt backwash loop; The backwash loop with to use three L type two position three-way valves being connected of useless warm water loop, its connected mode is: the common interface of first, second and third triple valve S1, S2, S3 is connected with the useless warm water outlet of the useless warm water import of 9 imports of warm water water pump, water preheater 12, hydro-thermal source heat exchanger 4 respectively; First path of first and third two triple valve S1, S2 connects the mouth of pipe, introduces useless warm water pond respectively, enters the ditch; The alternate path that first path of the second triple valve S2 connects the mouth of pipe, the 3rd triple valve S3 connects the mouth of pipe, connects with tee pipe coupling with the mouth of pipe that is connected of warm water water pump 9; The alternate path of first and second triple valve connects the mouth of pipe and is connected with tee pipe coupling with the abluent feed liquor mouth of pipe; Also pick out blow-off pipe on the alternate path tube connector of first triple valve, blowoff valve X2 is housed on blow-off pipe; On the abluent feed tube, abluent injection valve X1 and abluent fluid infusion jar are housed; Useless warm water active channel is walked first path of three triple valves, and flow process is: useless warm water pond, warm water water pump, water preheater, hydro-thermal source heat exchanger, gutter flow to shown in the hollow arrow of Fig. 5; The alternate path of three triple valves is walked in the backwash loop, and flow process is: warm water water pump 9, hydro-thermal source heat exchanger 4, water preheater 12, or flow back to warm water water pump 9, wash cycles, or open blowoff valve X2, enter the gutter.
The structure of the device of embodiment 6 is illustrated that by Fig. 6 two thermals source of device are the indoor and outdoor air heat sources.
The hot water condenser of the device of embodiment 6 is a heat storage water tank band fair water sleeves coil exchanger; The difference of the device refrigerant circulation loop system of the refrigerant circulation loop system of embodiment 6 and embodiment 1 shown in Figure 1 is, the device of embodiment 6 with room air thermal source heat exchanger 14, indoor fan for 15 hydro-thermal source heat exchanger 4, the warm water water pumps 9 that substituted the device of embodiment 1, substituted the coaxial heat exchanger of embodiment 1 with heat storage water tank band fair water sleeves coil exchanger 16, all the other connected modes are identical with control mode.Five function mode of embodiment 6 devices are: heat water from the heat absorption of outdoor air thermal source, heat water from the heat absorption of room air thermal source, defrosting is to the indoor cold air that provides, to the indoor warm braw that provides.
The structure of the device of embodiment 7 is illustrated that by Fig. 7 two thermals source of device are the indoor and outdoor air heat sources, and its hot water condenser is coaxial heat exchanger, adopts the forced-convection heat transfer mode.
The difference of the device of the refrigerant circulation loop system of the device of embodiment 7 and embodiment 6 shown in Figure 6 only is, the hot water condenser of the device of embodiment 7 is to adopt coaxial heat exchanger, and employing and heat storage water tank 17, water circulating pump 10 is formed gradually hot type mode of heating of complete alternation, its connected mode is that hot water condenser delivery port is connected with heat storage water tank 17 top circulation water inlets, the circulating outlet of heat storage water tank bottom is connected with the water circulating pump water inlet, the water circulating pump delivery port is connected with the water inlet of hot water condenser bottom, the water inlet of heat storage water tank bottom is connected with running water pipe, water check valve D1 and water intaking valve F1 are housed on the water inlet pipe, and the hot water outlet at heat storage water tank top is connected with client's hot-water line; Water circulating pump starts, and the water of hot water condenser and cold-producing medium all carry out forced-convection heat transfer.

Claims (10)

1. the open-and-shut double heat source heat pump hot water apparatus of refrigerating circuit includes the refrigerant circulation loop system, adds hot-water heating system, heat pump endothermic system, signal and control system; Signal system comprises evaporator outlet refrigerant temperature detector, and hot water effluent's hygrosensor is contained in cold-producing medium high and low pressure force detector on compressor exhaust pipe and the air intake duct etc.; Control system comprises cold-producing medium circulation, defrosting, hot water effluent's temperature or controls such as flow, pressure protect; The two thermals source that adopted are hydro-thermal source and air heat source, and the hydro-thermal source comprises bathing spent hot water, technology spent hot water, air-conditioning backwater, river, lake water etc.; It is characterized in that:
Described refrigerant circulation loop is by compressor, adds the hot water condenser of hot-water heating system, cross valve, two thermal source heat exchangers of heat pump endothermic system, bidirectional throttle device, compositions such as gas-liquid separator; Described hot water condenser is provided with hot water channel and coolant channel, and the position opposite of the position of hot water import and export and cold-producing medium import and export is pressed counter-flow heat exchanger and arranged; Described two thermal source heat exchangers are hydro-thermal source heat exchanger and air heat source heat exchanger, and the hydro-thermal source heat exchanger is furnished with the warm water water pump, and the air heat source heat exchanger is furnished with fan; The connected mode of refrigerant circulation loop is, the exhaust outlet of compressor is connected with the refrigerant inlet of hot water condenser, its refrigerant outlet is connected with the public high pressure inlet of cross valve, the common low pressure gas outlet of cross valve is connected with the air inlet of knockout drum, and its gas outlet is connected with the air inlet of compressor; Two other interface of cross valve is connected with the port of giving vent to anger of two thermal source heat exchangers respectively, and the port of giving vent to anger is the outlet that the thermal source heat exchanger is done evaporimeter time spent refrigerant gas; Another port of two thermal source heat exchangers is used the bidirectional throttle device, or capillary or two-way heating power expansion valve or two-way electric expansion valve are connected to each other; Fill cold-producing medium in the refrigerant circulation loop; Switch by cross valve, refrigerant circulation loop obtains two kinds of circulation forms; The flow process of first circulating refrigerant is: compressor, hot water condenser, cross valve, hydro-thermal source heat exchanger, bidirectional throttle device, air heat source heat exchanger, cross valve, gas-liquid separator, compressor; The flow process of second circulating refrigerant is: compressor, hot water condenser, cross valve, air heat source heat exchanger, bidirectional throttle device, hydro-thermal source heat exchanger, cross valve, gas-liquid separator, compressor; First circulation heats water from the air heat source heat absorption, and second circulation heats water from the heat absorption of hydro-thermal source; Second circulation also can be made defrost cycle.
2. the open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit as claimed in claim 1, it is characterized in that: the described hot water condenser that adds hot-water heating system is coaxial heat exchanger or plate type heat exchanger or double pipe heat exchanger, or the two-part heat exchanger; Described two-part heat exchanger, inlet segment are circulation section in the hot water, and water exit end is a hot water direct current gain of heat section, into and out of the ratio of two sections heat exchange areas between 0.7/0.3 and 0.8/0.28; Offer the bypass recycling outlet on two sections water channel tube connectors.
3. the open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit as claimed in claim 1 is characterized in that: the described hot-water heating system that adds, or comprise water preheater and hot water condenser; Described water preheater is a water-water heat exchanger, is dismountable plate type heat exchanger, establishes water purification road and useless warm water road, countercurrent flow; The water purification entery and delivery port of water preheater is connected with the supplementing water water inlet pipe of running water pipe, hot water condenser respectively; The useless warm water inlet tube and outlet tube of water preheater is connected with the water inlet of warm water pump outlet, hydro-thermal source heat exchanger respectively; The warm water pump water inlet inserts the spent hot water pond; The described hot water condenser that adds hot-water heating system is coaxial heat exchanger or plate type heat exchanger or double pipe heat exchanger, or the two-part heat exchanger; Described water preheater that adds hot-water heating system and hot water condenser or install with main frame one place, or with the main frame split, be installed on indoor and outdoor respectively; The split connector of refrigerant loop is selected in the cold-producing medium import and export of hot water condenser, the public high pressure inlet of the compressor air-discharging mouth of pipe and cross valve, and four connectors all are equipped with angle valve, are linked to be refrigerant circulation loop with two tube connectors after the partial installation.
4. as claim 1 or the open-and-shut double heat source heat pump hot water apparatus of 2 or 3 described a kind of refrigerating circuits, it is characterized in that: four kinds of modes are adopted in the heat exchange of the water stream channel of the described hot water condenser that adds hot-water heating system, wherein:
First kind is the direct current directly-heated type, is rill speed heat convection formula, and makeup water stream is through the superheated water condenser, exports after directly being heated to the leaving water temperature of setting; The hot water flow control valve is housed, the control output flow on the hot water delivery pipe of hot water condenser; Water intaking valve and check valve are housed on the supplementing water water inlet pipe;
Second kind is gradually hot type of complete alternation, be big flow velocity Turbulent Convection Heat Transfer formula, be linked to be hot water condenser heating loop, water route in regular turn by hot water condenser, hot water delivery pipe, client's hot water storage tank, water circulating pump water inlet pipe, water circulating pump, circulating pump discharge pipe, hot water condenser; Supplementing water is injected client's hot water storage tank, adopt water circulating pump that water is pumped to the heating of hot water condenser from the hot water storage tank after, foldback backheat water storage tank again, the repeated multiple times circulation, the water temperature of water tank is raised to setting value gradually;
The third is that the intermittent flow constant temperature goes out ability of swimming, is big flow velocity Turbulent Convection Heat Transfer formula, and hot water condenser heating loop, water route comprises: hot water condenser, water circulating pump, little water tank and hot water storage tank; The water inlet of hot water condenser is arranged with supplementing water water inlet pipe and hot water circuit water inlet pipe, dress replenishes water valve and check valve on the supplementing water water inlet pipe, its delivery port configuration hot water delivery pipe and hot water circuit outlet pipe, and hot water flow control valve and circulating-water valve are housed respectively; The hot water delivery pipe is connected with hot water storage tank's hot water inlet; Little water tank is provided with the pressure-equalizing pipe that circulation water inlet and atmosphere are communicated with at the top, the bottom is provided with circulating outlet and is connected with the water circulating pump water inlet pipe, and case inner top and bottom are provided with water level and following water level detector; Form hot water condenser-little water tank heating loop, water route by water circulating pump, hot water circuit water inlet pipe, hot water condenser, hot water circuit outlet pipe, little water tank, water circulating pump water inlet pipe etc.; The beginning supplementing water is filled with little water tank, after then adopting water circulating pump that water is pumped the heating of hot water condenser from little water tank, foldback returns little water tank again, the repeated multiple times circulation, after the water temperature of little water tank is raised to the leaving water temperature setting value, close the circulating-water valve on the hot water circuit outlet pipe, open the hot water delivery pipe and go up the hot water flow control valve, the water of little water tank is delivered to client's hot water storage tank with water circulating pump; When little cistern water level drops to water level, open circulating-water valve, close the hot water flow control valve, more again to little water tank water filling, full until water;
The 4th kind is interior circulation constant temperature continuous effluent formula, is local big flow velocity heat convection formula, and the described hot-water heating system that adds comprises two-part hot water condenser, water circulating pump, circulating reflux tube and hot water storage tank; The bypass recycling outlet of two-part hot water condenser is connected with circulating reflux tube top water inlet, on the bypass recycling outlet circulating-water valve is housed, circulating reflux tube bottom delivery port is connected with the water circulating pump water inlet pipe, the water circulating pump delivery port is connected with the circulating water inlet of hot water condenser, circulating water loop in constituting; Supplementing water enters the hot water condenser by the supplementing water water inlet pipe, converge with recirculated water, circulation section is heated back branch two-way in the hot water of hot water condenser, one tunnel flow identical with additional inflow, through hot water direct current gain of heat section, after being heated to the leaving water temperature setting value again, flow to the hot water storage tank by the hot water delivery pipe; All the other moisture flow to the bypass recycling outlet, get back to the circulating reflux tube, recycle; By regulating the open degree of hot water output flow control valve, regulate inflow, make hot water effluent's temperature reach setting value.
5. the open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit as claimed in claim 1, it is characterized in that: described signal and control system, comprise two evaporator outlet refrigerant temperature detectors that are disposed in two thermal source heat exchangers and the close thermal source heat exchanger place of cross valve connecting line respectively, be installed in the hot water effluent's hygrosensor on the hot water condenser hot water outlet pipe main, be contained in the warm water leaving water temperature detector of the hydro-thermal source heat exchanger on the water outlet pipe of hydro-thermal source heat exchanger, first and second loop control of cold-producing medium, defrosting control etc.; Described signal and control system target are in realizing five kinds of function mode: heat water from the air heat source heat absorption, heat water from the heat absorption of hydro-thermal source, defrosting provides air conditioning water, and air conditioning and heating water is provided; Heat water and heating mode when conflict, the preferential control principle of employing hot water; Heat water and defrosting mode when conflict, adopt the preferential control principle that defrosts; Heat water mode from the air heat source heat absorption: adopt cold-producing medium first circulation, compressor, fan and cross valve energising, the warm water Pump Failure, the public high pressure inlet of cross valve and the conducting of hydro-thermal source heat exchanger, the additional water valve of hot water is opened, the water circulating pump energising is started; Heat water mode from hydro-thermal source heat absorption: adopt cold-producing medium second circulation, compressor, the energising of warm water water pump, fan and cross valve outage, the public high pressure inlet of cross valve and the conducting of air heat source heat exchanger, hot water replenishes that water valve leaves, water circulating pump is switched on starts; Defrosting mode: comprise that defrosting starting, defrost cycle and defrosting finish three control procedures; Heat pump assembly is when cold-producing medium first periodic duty, when the evaporator outlet refrigerant temperature that runs into the air heat source heat exchanger is reduced to the desired temperature that needs defrosting, the defrosting starting, system automatically switches to cold-producing medium second circulation, also as defrost cycle, carry out the defrosting priority principle, close hot water and replenish water valve, water circulating pump outage, defrost fast; When the refrigerant temperature of air heat source heat exchanger was elevated to the desired temperature of defrosting end, defrosting finished, and automatically reverted to cold-producing medium first circulation, and heat absorption heats water mode from air; Air conditioning water is provided: when adopting the full and temperature of the water of hot water storage tank under the air-conditioning backwater condition to reach setting value in the hydro-thermal source, continue to adopt cold-producing medium second circulation, and fan energising starting, replenish water valve, water circulating pump outage and close hot water; Air conditioning and heating water mode is provided, when adopting the full and temperature of the water of hot water storage tank under the air-conditioning backwater condition to reach setting value in the hydro-thermal source, continues to adopt cold-producing medium first circulation, and warm water water pump energising starting, water valve, water circulating pump outage replenished and close hot water; The difference of the temperature value that the hot water output temperature records according to hot water effluent's hygrosensor and the leaving water temperature value of setting, the open degree of control hot water flow control valve is regulated and is replenished inflow and realize.
6. as claim 1 or the open-and-shut double heat source heat pump hot water apparatus of 3 described a kind of refrigerating circuits, it is characterized in that: the useless warm water loop of described hydro-thermal source heat exchanger and water preheater, or have additional dirt backwash loop; The backwash loop with to use three L type two position three-way valves being connected of useless warm water loop, its connected mode is: the common interface of first, second and third triple valve is connected with the useless warm water outlet of the useless warm water import of the import of warm water water pump, water preheater, hydro-thermal source heat exchanger respectively; First path of first and third two triple valves connects the mouth of pipe, introduces useless warm water pond respectively, enters the ditch; The alternate path that first path of second triple valve connects the mouth of pipe, the 3rd triple valve connects the mouth of pipe, connects with tee pipe coupling with the mouth of pipe that is connected of warm water water pump; The alternate path of first and second triple valve connects the mouth of pipe and is connected with tee pipe coupling with the abluent feed liquor mouth of pipe; Also pick out the bypass blow-off pipe on the alternate path tube connector of first triple valve, blowoff valve is housed on blow-off pipe; On the abluent feed tube, abluent injection valve and abluent fluid infusion jar are housed; Useless warm water active channel is walked first path of three triple valves, and useless warm water flow process is: useless warm water pond, warm water water pump, water preheater, hydro-thermal source heat exchanger, gutter; The alternate path of three triple valves is walked in the backwash loop, and the flushing water flow process is: warm water water pump, hydro-thermal source heat exchanger, water preheater, or flow back to the warm water water pump, wash cycles, or open blowoff valve, enter the gutter.
7. the open-and-shut double heat source heat pump hot water apparatus of refrigerating circuit includes the refrigerant circulation loop system, adds hot-water heating system, heat pump endothermic system, signal and control system; Signal system comprises evaporator outlet refrigerant temperature detector, and hot water effluent's hygrosensor is contained in the refrigerant pressure detector of compressor exhaust pipe etc.; Control system comprises controls such as cold-producing medium circulation, defrosting, hot water effluent's temperature, pressure protect; It is characterized in that:
Described pair of thermal source is room air thermal source and outdoor air thermal source; Described refrigerant circulation loop is by compressor, adds the hot water condenser of hot-water heating system, cross valve, two thermal source heat exchangers of heat pump endothermic system, bidirectional throttle device, compositions such as gas-liquid separator; Described hot water condenser is provided with hot water channel and coolant channel, and the position of the hot water import and export of hot water condenser and the position opposite of cold-producing medium import and export are pressed counter-flow heat exchanger and arranged; Described two thermal source heat exchangers are room air thermal source heat exchanger and outdoor air thermal source heat exchanger, are furnished with indoor fan and outdoor fan respectively; The connected mode of refrigerant circulation loop is: the exhaust outlet of compressor is connected with the refrigerant inlet of hot water condenser, its refrigerant outlet is connected with the public high pressure inlet of cross valve, the common low pressure gas outlet of cross valve is connected with the air inlet of knockout drum, and its gas outlet is connected with the air inlet of compressor; Two other interface of cross valve is connected with the port of giving vent to anger of two thermal source heat exchangers respectively, and the port of giving vent to anger is the outlet that the thermal source heat exchanger is done evaporimeter time spent refrigerant gas; Another port of two thermal source heat exchangers is used the bidirectional throttle device, or capillary or two-way heating power expansion valve or two-way electric expansion valve are connected to each other; Fill cold-producing medium in the refrigerant circulation loop; Switch by cross valve, refrigerant circulation loop obtains two kinds of circulation forms; First circulation process is: compressor, hot water condenser, cross valve, room air thermal source heat exchanger, bidirectional throttle device, outdoor air thermal source heat exchanger, cross valve, gas-liquid separator, compressor; Second circulation process is: compressor, hot water condenser, cross valve, outdoor air thermal source heat exchanger, bidirectional throttle device, room air thermal source heat exchanger, cross valve, gas-liquid separator, compressor; First circulation heats water from the heat absorption of outdoor air thermal source, and second circulation heats water from the heat absorption of room air thermal source, and second circulation also can be made defrost cycle.
8. the open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit as claimed in claim 7 is characterized in that: the described hot water condenser that adds hot-water heating system adopts three kinds of heat exchange forms to make the water heating, wherein:
First kind of hot water condenser is the heat exchanger of placing band fair water sleeves helix tube in heat storage water tank, the cold-producing medium forced-convection heat transfer in the helix tube, the water heat transfer free convection in the confined space in the outer fair water sleeves of helix tube;
Perhaps, second kind of hot water condenser is the heat exchanger of placing helix tube in heat storage water tank, the cold-producing medium forced-convection heat transfer in the helix tube, the outer water heat transfer free convection in the water tank large space of helix tube;
Perhaps, the third hot water condenser is coaxial heat exchanger, or plate type heat exchanger, or double pipe heat exchanger, and and heat storage water tank, water circulating pump is formed gradually hot type mode of heating of complete alternation, its connected mode is that hot water condenser delivery port is connected with heat storage water tank top circulation water inlet, the circulating outlet of heat storage water tank bottom is connected with the water circulating pump water inlet, the water circulating pump delivery port is connected with the water inlet of hot water condenser bottom, the water inlet of heat storage water tank bottom is connected with running water pipe, water check valve and water intaking valve are housed on the water inlet pipe, and the hot water outlet at heat storage water tank top is connected with client's hot-water line; Water circulating pump starts, the aquaporin forced-convection heat transfer of hot water condenser.
9. the open-and-shut double heat source heat pump hot water apparatus of a kind of refrigerating circuit as claimed in claim 7, it is characterized in that: described signal and control system, comprise two evaporator outlet refrigerant temperature detectors that are disposed in two thermal source heat exchangers and the close thermal source heat exchanger place of cross valve connecting line respectively, be contained in the hot water effluent's hygrosensor on the hot water condenser hot water output water pipe, first and second loop control of cold-producing medium, defrosting control etc.; Described signal and control system target are in realizing five kinds of function mode: heat water from the heat absorption of outdoor air thermal source, heat water from the heat absorption of room air thermal source, defrosting is to the indoor cold air that provides, to the indoor warm braw that provides; Heating water and heating mode when conflict, adopt the preferential control principle of hot water, heating water when conflicting, the employing preferential control principle that defrosts with defrosting mode; Heat water mode from the heat absorption of outdoor air thermal source: adopt cold-producing medium first circulation, compressor, outdoor fan and cross valve energising, the indoor fan outage, the public high pressure inlet of cross valve and the conducting of room air thermal source heat exchanger, hot water replenishes water valve and opens, when the hot water condenser adopts complete alternation gradually during the hot type mode of heating, the water circulating pump energising is started; Heat water mode from the heat absorption of room air thermal source: adopt cold-producing medium second circulation, compressor, indoor fan energising, outdoor fan and cross valve outage, the public high pressure inlet of cross valve and the conducting of outdoor air thermal source heat exchanger, hot water replenishes water valve and opens, and when the hot water condenser adopts complete alternation gradually during the hot type mode of heating, the water circulating pump energising is started, when water temperature reached setting value in the water tank, water circulating pump had a power failure; Defrosting: comprise that defrosting starting, defrost cycle and defrosting finish three control procedures; When the evaporator outlet refrigerant temperature of outdoor air thermal source heat exchanger is reduced to when needing the defrosting desired temperature, the defrosting starting, system automatically switches to second circulation, also make defrost cycle, carry out the defrosting priority principle, close hot water and replenish water valve, water circulating pump outage, defrost fast; When the refrigerant temperature of empty outer air thermal source heat exchanger was elevated to defrosting end temp setting value, defrosting finished, and automatically reverted to cold-producing medium first circulation, and heat absorption heats water from the outdoor air thermal source; To the indoor cold air mode that provides: when hot water storage tank's coolant-temperature gage reaches setting value, continue to adopt cold-producing medium second circulation, and outdoor fan energising work, replenish water valve, water circulating pump outage and close hot water; To the indoor warm braw mode that provides: when hot water storage tank's coolant-temperature gage reaches setting value, continue to adopt cold-producing medium first circulation, and indoor fan energising work, replenish water valve, water circulating pump outage and close hot water; Leaving water temperature value and indoor temperature that the hot water output temperature reaches setting reach when setting value, and shut down.
10. as claim 1 and the open-and-shut double heat source heat pump hot water apparatus of 7 described a kind of refrigerating circuits, it is characterized in that: described cross valve, it is a kind of Pneumatic four-way valve that solenoid pilot valve is arranged, the effective tube connector of public high pressure admission of its solenoid pilot valve is connected on the compressor exhaust pipe of refrigerant circulation loop, and the common low pressure blast pipe of its solenoid pilot valve is connected on the common low pressure escape pipe of cross valve itself.
CN 200910181300 2009-07-09 2009-07-09 Dual heat-source heat-pump hot water device with extremely simple refrigerating loop CN101943471A (en)

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