CN103245122A - Ultra-low-temperature double-circuit heat pump air-conditioning water heater - Google Patents
Ultra-low-temperature double-circuit heat pump air-conditioning water heater Download PDFInfo
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Abstract
The invention discloses an ultra-low-temperature double-circuit heat pump air-conditioning water heater. The water heater comprises at least one first refrigeration compression cycle circuit and at least one second refrigeration compression cycle circuit. The at least one first refrigeration compression cycle circuit is sequentially connected with a first refrigeration compressor, a first four-way reversing valve, a coupling heat exchange device, a first expansion valve and a first outdoor air heat exchange device through pipelines. The at least one second refrigeration compression cycle circuit is sequentially connected with a second refrigeration compressor, a hot-water heat exchange device, a second four-way reversing valve, an indoor heat exchange device, a second expansion valve, a second outdoor air heat exchange device and a coupling heat exchange device through pipelines. According to the water heater, efficient heating or refrigeration and hot water supply are achieved through the double circuits at the ultra-low temperature in winter or in the extremely hot environment in summer, the at least one second refrigeration compression cycle circuit operates singly in an energy-saving mode at high temperatures in winter or at the normal temperature in summer, refrigerating and heating efficiencies are improved, and the water heater is suitable for independent or distributed concentrated refrigerating or heating and hot water supply.
Description
Technical field
The present invention relates to a kind of air conditioner water heating machine, relate in particular to a kind of ultralow temperature double loop heat pump air-conditioning hot water.
Background technology
The ultra-low temperature air source heat pump of prior art, in order to improve the heating effect under the severe cold temperature in the winter time, adopt dual unit cold compression circulating technology, in order further to improve its economy, be the circular flow of single-stage refrigerant compression according to the outside air temperature needs with dual unit cold compression varying cyclically, this just needs switching device and the loop of the complicated air conditioning terminal fan coil of configuration and dual unit cold compression circulation and single-stage refrigerant compression circulation output, not only make system's operation conversion become complicated and trouble, and reduce its reliability.Air-conditioning and domestic hot-water are the modern indispensable demands of life at home, therefore install an air-conditioner and install again such as air source, solar energy or electric heater, particularly air-source water heater is exactly the structure of an air source heat pump air-conditioner device, not only repeat to increase the investment of equipment, also cause the duplication of production manufacturing of material installation, be a kind of social waste and cause environmental pollution to increase the weight of.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of ultralow temperature double loop heat pump air-conditioning hot water, the winter of 35 ℃ of its Neng Zai ≧ ﹣ under the ultra-low temperature surroundings by having the one-level first refrigerant compression closed circuit at least and having the one-level second refrigerant compression closed circuit double loop joint refrigeration compression cycle at least, be implemented in and heat heating under the ultra-low temperature surroundings in winter efficiently and the domestic hot-water is provided heat supply running, can be by the second refrigerant compression closed circuit single loop independence heating, domestic hot-water supply when temperature is higher in the winter time; Under the extremely hot environment of extra-high-speed temperature in summer by double loop highly effective refrigeration operation of air conditioner, also can be in single loop independence high efficiency energy saving refrigeration operation under the summer common temperature.Above-mentioned double loop and single loop alternate run need not to dispose switching device and the loop that any air conditioning terminal fan coil and dual unit cold compression circulation and the circulation of single-stage refrigerant compression are exported.When summer, refrigeration air-conditioner moved, condenser heat belonged to waste heat, provided the domestic hot-water by the free heating of domestic hot-water's heat exchanger, and is not only energy-conservation but also economical.
For reaching this purpose, the present invention by the following technical solutions:
A kind of ultralow temperature double loop heat pump air-conditioning hot water, comprise and have the one-level first refrigerant compression closed circuit at least and have the one-level second refrigerant compression closed circuit at least, the described first refrigerant compression closed circuit is connected with first refrigeration compressor, first four-way change-over valve, coupled and heat-exchange device, first expansion valve and the first outdoor air heat-exchanger rig in turn by pipeline, and the described first outdoor air heat-exchanger rig comprises first outdoor air heat exchanger and is located at first outdoor fan of described first outdoor air heat exchanger, one side; The described second refrigerant compression closed circuit is connected with second refrigeration compressor, hot water heat-exchanger rig, second four-way change-over valve, indoor heat-exchanger rig, second expansion valve, the second outdoor air heat-exchanger rig and coupled and heat-exchange device in turn by pipeline, and the described second outdoor air heat-exchanger rig comprises second outdoor heat exchanger and is located at second outdoor fan of described second outdoor heat exchanger, one side.Described first refrigeration compressor and second refrigeration compressor are controlled operation automatically by frequency conversion.
Further, described coupled and heat-exchange device is by housing and be located at that brazing plate type heat exchanger in the housing constitutes or constitute shell-type spiral coil heat exchanger by housing and the spiral coil be located in the housing, described shell-type spiral coil heat exchanger comprises primary side heat exchange coil and secondary side heat exchange coil, be filled with heat exchange, damping, buffer medium between described brazing plate type heat exchanger, described primary side heat exchange coil, secondary side heat exchange coil and the housing, described heat exchange, damping, buffer medium are cold-producing medium or conduction oil or anti-icing fluid or water.
Further, described coupled and heat-exchange device is made of condensation, evaporation, liquid storage, gas-liquid separated coupled heat exchanger or is constituted or be made of hot and cold water output coupled heat exchanger, evaporimeter and coupling water pump by plate type heat exchanger, the spiral heat exchanger of the direct contact heat-exchanging form of dividing wall type heat exchanger, and the water side heat-exchange end of described hot and cold water output coupled heat exchanger and the water side heat-exchange end of described evaporimeter are connected in series via coupling water pump and pipeline and constitute the coupled and heat-exchange loop.
Further, described hot water heat-exchanger rig by the hot water water tank with place the hot water heat exchange coil in the described hot water water tank to constitute.
Further, described hot water heat-exchanger rig comprises hot water heat exchanger and is positioned at the hot water water tank of described hot water heat exchanger one side that the installation site of described hot water water tank is higher than the installation site of described hot water heat exchanger.
Further, described hot water heat-exchanger rig comprises hot water heat exchanger, is positioned at hot water water tank and the heating pump of described hot water heat exchanger one side, and described hot water water tank, heating pump and hot water heat exchanger connect and compose by pipeline successively.
Further, described indoor heat-exchanger rig is made of a typhoon coiler at least.
Further, described indoor heat-exchanger rig is exported heat exchanger, accumulation of energy water pump, accumulation of energy water tank and fan coil by hot and cold water and is connected and composed by pipeline successively.
Further, described indoor heat-exchanger rig comprise the accumulation of energy loop that connected and composed by pipeline by hot and cold water output heat exchanger, accumulation of energy water pump and accumulation of energy water tank and by accumulation of energy water tank, exoergic water pump, isolate heat exchanger, air-conditioner circulating water pump and fan coil and isolate output loop by the air-conditioning that pipeline connects and composes.
Further, described indoor heat-exchanger rig is exported heat exchanger, air-conditioner circulating water pump and fan coil by hot and cold water and is connected and composed by pipeline successively.
Beneficial effect of the present invention is: by the first refrigerant compression closed circuit and the two circuit ultralow temperature of second refrigerant compression closed circuit double loop heat pump air-conditioning hot water are set, automatically control mode of operation according to the outside air temperature situation, both can be implemented in that the double loop heats heating efficiently and the domestic hot-water is provided heat supply running under the ultralow temperature environment in winter, utilized the second refrigerant compression closed circuit single loop independence heating when also outside air temperature is higher in the winter time; Double loop refrigerating operaton efficiently under summer extremely hot extra-high-speed temperature environment, can also utilize the second refrigerant compression closed circuit single loop independent cooling energy-saving operation of air conditioner in summer under the common temperature, when summer, refrigeration air-conditioner moved, domestic hot-water's heating is provided free by the condensation waste heat, make system reach higher refrigeration, heating efficiency, not only energy-conservation and economical, further strengthened operation stability and reliability.
Description of drawings
The structural representation of the ultralow temperature double loop heat pump air-conditioning hot water that Fig. 1 provides for the embodiment of the invention 1;
The structural representation of the ultralow temperature double loop heat pump air-conditioning hot water that Fig. 2 provides for the embodiment of the invention 2;
The structural representation of the ultralow temperature double loop heat pump air-conditioning hot water that Fig. 3 provides for the embodiment of the invention 3;
The structural representation of the ultralow temperature double loop heat pump air-conditioning hot water that Fig. 4 provides for the embodiment of the invention 4;
The structural representation of the ultralow temperature double loop heat pump air-conditioning hot water that Fig. 5 provides for the embodiment of the invention 5;
Among the figure:
1, first refrigeration compressor; 2, first four-way change-over valve; 3, primary side heat exchanger or primary side heat exchange coil; 4, heat exchange, damping, buffer medium; 5, coupled and heat-exchange device; 6, first expansion valve; 7, first outdoor air heat exchanger; 8, first outdoor fan; 9, second refrigeration compressor; 10, hot water heat exchanger or hot water heat exchange coil; 11, second four-way change-over valve; 12, fan coil; 13, second expansion valve; 14, second outdoor air heat exchanger; 15, second outdoor fan; 16, hot water water tank; 17, secondary side heat exchanger or secondary side heat exchange coil; 18, fan coil; 19, fan coil; 20, second expansion valve; 21, second expansion valve; 22, water side heat-exchange end; 23, refrigerant side heat exchanger; 24, refrigerant side heat exchanger; 25, refrigerant side heat exchanger; 26, water side heat-exchange end; 27, hot and cold water output heat exchanger; 28, accumulation of energy water pump; 29, heating pump; 30, accumulation of energy water tank; 31, heat-exchange end; 32, secondary heat exchange end; 33 isolate heat exchanger; 34, exoergic water pump; 35, air-conditioner circulating water pump; 36, water side heat-exchange end; 37, water side heat-exchange end; 38, hot and cold water output coupled heat exchanger; 39, evaporimeter; 40, coupling water pump; 41, hot water outlet; 42, running water entrance; 43, the first outdoor air heat-exchanger rig; 44, the second outdoor air heat-exchanger rig; 50, hot water heat-exchanger rig; 60, indoor heat-exchanger rig.
The specific embodiment
Below in conjunction with accompanying drawing, and further specify technical scheme of the present invention by specific embodiment.
The structural representation of the ultralow temperature double loop heat pump air-conditioning hot water that Fig. 1-5 provides for embodiment of the invention 1-5.The present invention can manufacture the small-sized household air-conditioning, increases double loop quantity and capacity and fan coil quantity, also can make up large-scale central air conditioner system.
As shown in Figure 1, a kind of ultralow temperature double loop heat pump air-conditioning hot water, comprise the first refrigerant compression closed circuit and the second refrigerant compression closed circuit, the described first refrigerant compression closed circuit is connected with first refrigeration compressor 1, first four-way change-over valve 2, coupled and heat-exchange device 5, first expansion valve 6 and the first outdoor air heat-exchanger rig 43 in turn by pipeline, wherein, described coupled and heat-exchange device 5 is to be made of housing and the brazing plate type heat exchanger be located in the housing, is filled with buffer medium 4 between brazing plate type heat exchanger and the housing; The refrigerant gas entrance end a end of the primary side heat exchanger 3 of described brazing plate type heat exchanger is connected with the f end of described first four-way change-over valve 2, and the cold-producing medium entrance end b end of described primary side heat exchanger 3 is connected with described first expansion valve 6; The refrigerant gas port of export c end of the secondary side heat exchanger 17 of described brazing plate type heat exchanger is connected with described second refrigeration compressor, 9 suction ends, and the refrigerant liquid entrance point d end of described secondary side heat exchanger 17 is connected with the k end of described second four-way change-over valve 11.The described first outdoor air heat-exchanger rig 43 comprises first outdoor air heat exchanger 7 and is located at first outdoor fan 8 of described first outdoor air heat exchanger, 7 one sides, described first outdoor air heat exchanger, 7 one ends are connected with first expansion valve 6, the other end is connected with the h end of first four-way change-over valve 2, described first refrigeration compressor, 1 suction end is connected with the g end of first four-way change-over valve 2, and exhaust end is connected with the e end of first four-way change-over valve 2.
The described second refrigerant compression closed circuit is connected with second refrigeration compressor 9 in turn by pipeline, hot water heat-exchanger rig 50, second four-way change-over valve 11, indoor heat-exchanger rig 60, second expansion valve 13, the second outdoor air heat-exchanger rig 44 and coupled and heat-exchange device 5, wherein, described hot water heat-exchanger rig 50 comprises hot water water tank 16 and the hot water heat exchange coil 10 that places in the described hot water water tank 16, one side of described hot water heat exchange coil 10 is connected with described second refrigeration compressor, 9 exhaust ends, its opposite side is connected with the i end of second four-way change-over valve 11, hot water water tank 16 arranges hot water outlet 41, running water entrance 42.Described indoor heat-exchanger rig 60 is made of separate unit fan coil 12, and an end of described fan coil 12 is connected with the j end of described second four-way change-over valve 11, and the other end of described fan coil 12 is connected with described second expansion valve 13.The described second outdoor air heat-exchanger rig 44 comprises second outdoor air heat exchanger 14 and is located at second outdoor fan 15 of described second outdoor air heat exchanger, 14 1 sides, described second outdoor air heat exchanger, 14 1 ends are connected with the l end of second four-way change-over valve 11, and the other end is connected with described second expansion valve 13.Described first refrigeration compressor 1 and second refrigeration compressor 9 can adopt frequency conversion to control automatically, and what described first expansion valve 6 and second expansion valve 13 adopted is electric expansion valve.
Winter, the first refrigerant compression closed circuit and the second refrigerant compression closed circuit double loop were moved simultaneously when outside air temperature is low, and the course of work of ultralow temperature double loop heat pump air-conditioning hot water heating is specific as follows:
1 running of first refrigeration compressor, its high temperature discharge gas enters to the f end by the e end of first four-way change-over valve 2, in entering primary side heat exchanger 3 coupled and heat-exchange device 5 in, a end by the partition heat transfer secondary side heat exchanger 17 is carried out the condensation heat release, while is heat exchanging also, damping, buffer medium 4 heating, present embodiment medium 4 is conduction oil, 4 dampings of medium here, cushioning effect, condensed liquid refrigerant enters first outdoor air heat exchanger 7 by the b end after the 6 throttling step-downs of first expansion valve, heat in the evaporation absorption chamber outer air, heat absorption flashes to refrigerant gas and holds the suction end of sending into first refrigeration compressor 1 to the g end through the h of first four-way change-over valve 2 again, continued to discharge high temperature refrigerant gas after first refrigeration compressor, 1 repeated compression, repeated the above-mentioned first refrigerant compression cyclic process.
The condenser heat of the first refrigerant compression closed circuit is through the primary side heat exchanger 3 of coupled and heat-exchange device 5, coupling passes to the secondary side heat exchanger 17 of the second refrigerant compression closed circuit coupled and heat-exchange device 5, give cold-producing medium in the secondary side heat exchanger 17 by secondary side heat exchanger 17 with the condenser heat coupled and heat-exchange of the first refrigerant compression closed circuit again, its boil-off gas is sent into the suction end of second refrigeration compressor 9 of the second refrigerant compression closed circuit after this refrigerant heats by the c end of secondary side heat exchanger 17, high temperature refrigerant gas after compression enters hot water heat exchange coil 10, running water in the hot water water tank 16 is carried out the condensation heating, condensed refrigerant air-liquid mixture is held to j by the i of second four-way change-over valve 11 and is held, continue the condensation heat release through fan coil 12, by fan coil 12 to the indoor heating heat supply, condensed liquid enters second outdoor air heat exchanger 14 after the 13 throttling step-downs of second expansion valve, held to k by the l of second four-way change-over valve 11 again and hold, this moment is because second outdoor fan 15 is in closed condition, second outdoor air heat exchanger, 14 evaporation capacity are small, only play the effect of a coolant channel, liquid continues evaporation absorption primary side heat exchanger 3 by the k end through the secondary side heat exchanger 17 that the d end enters coupled and heat-exchange device 5, heat after, gas is held by after 9 suctions of second refrigeration compressor by the c of secondary side heat exchanger 17, continue compression and discharge high temperature refrigerant gas, repeat the efficient heating operation in above-mentioned double loop heat pump air-conditioning hot water double loop under ultralow temperature.
Winter is when outside air temperature is higher, whole devices of the first refrigerant compression closed circuit are out of service, this moment is by the second refrigerant compression closed circuit independent operating, after 9 runnings of second refrigeration compressor, be compressed into the refrigerant gas of high-temperature high-pressure state through 10 pairs of running water heating of hot water heat exchange coil, cold-producing medium after the heat release is held to j through the i of second four-way change-over valve 11 and is held, enter fan coil 12 and continue the condensation heat release, by fan coil 12 to the indoor heating heat supply, condensed liquid refrigerant after the 13 throttling step-downs of second expansion valve to second outdoor air heat exchanger 14, second outdoor fan, 15 operations this moment, the air forced movement forms wind, wind is crossed second outdoor air heat exchanger, 14 surfaces and is formed temperature difference formation wind energy, the heat of the wind energy that the cold-producing medium evaporation absorption outer surface in second outdoor air heat exchanger 14 flows through, absorbing the refrigerant gas that evaporates after the wind energy is held to k by the l of second four-way change-over valve 11 and holds, enter in the secondary side heat exchanger 17 of coupled and heat-exchange device 5 through the d end again, at this moment out of service because of the first refrigerant compression closed circuit, so heat transferring medium empty calory, 17 on secondary side heat exchanger plays a coolant channel effect at this moment, gaseous refrigerant is discharged the suction end of sending into second refrigeration compressor 9 by the c end of secondary side heat exchanger 17, after 9 compressions of second refrigeration compressor, discharge high temperature refrigerant gas again, repeat the above-mentioned second refrigerant compression closed circuit independence heating energy-saving run.
Under the summer common temperature environment during refrigeration air-conditioner operation, its course of work is: this moment, the first refrigerant compression closed circuit was out of service, by the second refrigerant compression closed circuit independent cooling operation of air conditioner, its process is: 11 commutations of second four-way change-over valve transfer refrigerating state to, after 9 runnings of second refrigeration compressor, high-temperature exhaust air is through 10 pairs of domestic hot-water's heating of domestic hot-water's heat exchange coil, cold-producing medium after the condensation heat release is held to l through the i of second four-way change-over valve 11 and is held, enter the second outdoor air heat exchanger 14 condensation heat release again, this moment is because 15 unlatchings of second outdoor fan, air movement forms wind, cold-producing medium to second outdoor air heat exchanger 14 of flowing through carries out the condensation heat release, after the refrigerant liquid after the condensation heat release passes through the 13 throttling step-downs of second expansion valve, enter fan coil 12 evaporations and absorb the room air heat that flows through fan coil 12, heat absorption reduces indoor air temperature gradually, reach the purpose of refrigeration air-conditioner, refrigerant gas after the evaporation is held the d end that enters the secondary side heat exchanger 17 of coupled and heat-exchange device 5 to the k end through the j of second four-way change-over valve 11, secondary side heat exchanger 17 is taken on channeling at this moment, flow out the suction end that enters second refrigeration compressor 9 by the c end, exhaust after compression enters hot water heat exchange coil 10 again, repeats above-mentioned refrigeration air-conditioner operation.Domestic hot-water heating is provided free by the condensation waste heat summer among the present invention, and is not only energy-conservation but also economical.
The first refrigerant compression closed circuit and the second refrigerant compression closed circuit double loop are moved simultaneously when summer, outside air temperature was extremely hot: first four-way change-over valve, 2 commutations at this moment are refrigerating state, after 1 running of first refrigeration compressor, exhaust is held to h by the e of first four-way change-over valve 2 and is held, enter first outdoor air heat exchanger 7 through first outdoor fan 8, condensation heat is entered atmosphere, condensed refrigerant liquid is after the 6 throttling step-downs of first expansion valve, by heat and the heat exchange of refrigerant inlet b via the cold-producing medium in the secondary side heat exchanger 17 of the primary side heat exchanger 3 evaporation absorption coupled and heat-exchange devices 5 of coupled and heat-exchange device 5, damping, the heat of buffer medium 4, cold-producing medium in primary side heat exchanger 3 cooled secondary side heat exchangers 17 obtains further cold excessively, cold-producing medium is crossed the refrigerating capacity that has further increased by the second refrigerant compression closed circuit after cold, thereby improved the refrigerating efficiency under the extremely hot environment in summer greatly, wherein, the running of refrigeration air-conditioner is identical under the running of the second refrigerant compression closed circuit and the above-mentioned summer common temperature environment, no longer repeats to tell about.
Embodiment 2
As shown in Figure 2, substantially the same manner as Example 1, institute's difference is: in the present embodiment, coupled and heat-exchange device 5 is to constitute shell-type spiral coil heat exchanger by housing and the spiral coil be located in the housing, the primary side heat exchange coil 3 of shell-type spiral coil heat exchanger, between the secondary side heat exchange coil 17 of described primary side heat exchange coil 3 one sides and housing, be filled with buffer medium 4, here buffer medium 4 is cold-producing medium, coupled and heat-exchange is fully by heat exchange between the heat exchange coil of primary side described in the present embodiment 3 and the secondary side heat exchange coil 17, damping, buffer medium 4 is finished, concrete work is: winter the first refrigerant compression closed circuit condenser heat, 4 heating of 3 pairs of buffer mediums of primary side heat exchange coil in coupled and heat-exchange device 5, heated buffer medium 4 is again to 17 heating of secondary side heat exchange coil, identical as for other running and Fig. 1, just no longer repeat to have introduced.
Hot water heat-exchanger rig 50 comprises hot water heat exchanger 10 and is positioned at the hot water water tank 16 of described hot water heat exchanger 10 1 sides that the installation site of described hot water water tank 16 is higher than the installation site of described hot water heat exchanger 10.
The refrigerant gas arrival end m end of the refrigerant side heat exchanger 23 of described hot water heat exchanger 10 is connected with second refrigeration compressor 9, and the condensation of refrigerant liquid port of export n end of the refrigerant side heat exchanger 23 of hot water heat exchanger 10 is connected with the i end of second four-way change-over valve 11; Water side heat-exchange end 22 port of export o of described hot water heat exchanger 10 are connected with the arrival end of hot water water tank 16, the outlet of hot water water tank 16 is connected with the arrival end p end of the water side heat-exchange end 22 of hot water heat exchanger 10, and bottom one side of described hot water water tank 16 arranges running water entrance 42; The top of hot water water tank 16 arranges hot water outlet.
Described indoor heat-exchanger rig 60 by many typhoons coiler 12,18 and 19 respectively with after second expansion valve 13,20,21 is connected, be connected in parallel again between the j end of an end of second outdoor air heat exchanger 14 and second four-way change-over valve 11, its course of work and Fig. 1 separate unit fan coil 12 are just the same, respectively independent operating.
Below only hot water heating process is introduced, other course of work is identical with the course of work of embodiment 1, no longer repeats to tell about.Second refrigeration compressor, 9 high-temperature exhaust airs enter the refrigerant side heat exchanger 23 condensation heat releases of hot water heat exchanger 10, the domestic hot-water that water side heat-exchange end 22 is flowed through heats, the hot water water tank 16 of present embodiment is installed in hot water heat exchanger 10 1 sides and is higher than the installation site of described hot water heat exchanger 10, rely on tap water potential difference formation gravity convection heat exchange in domestic hot-water's jar, the running water that is heated upwards flows, cold water circulates from bottom to top and finishes domestic hot-water's heating process, compare with embodiment 1, present embodiment has increased fan coil 18,19 and second expansion valve 20,21, can constitute one-driven-several type air-conditioning system, when the refrigeration of every branch road and heating operation, the evaporation of cold-producing medium and heat release are independently finished by each bar branch road, and the fan coil 12 among its running and Fig. 1 and second expansion valve 13 are identical.
Embodiment 3
As shown in Figure 3, difference from Example 2 is: in the present embodiment, coupled and heat-exchange device 5 is condensation, evaporation, liquid storage, gas liquid type coupled heat exchanger, and the coupled and heat-exchange device 5 of its structure and Fig. 1 and Fig. 2 is different.Indoor heat-exchanger rig 60 is energy-storage system, and it is made of hot and cold water output heat exchanger 27, fan coil 12, accumulation of energy water tank 30, accumulation of energy water pump 28 successively.Hot water heat-exchanger rig 50 and Fig. 2 difference are to have disposed heating pump 29 between the p of the water side heat-exchange end 22 of hot water heat exchanger 10 end and hot water water tank 16.Be illustrated with course of work Fig. 2 different piece at above-mentioned below.
Heat exchange in the present embodiment, damping, buffer medium 4 are the cold-producing medium of the second refrigerant compression closed circuit.When winter, the double loop heating moved, the refrigerant vapour that the heat that is condensed heats, through c end input second refrigeration compressor 9, compression back high-temperature exhaust air is held to the refrigerant side heat exchanger 23 condensation heat releases of hot water heat exchanger 10 by m, hold to the refrigerant side heat exchanger 25 of j end through hot and cold water output heat exchanger 27 through the i of n end by second four-way change-over valve 11 again, continue the condensation heat release to the heating water heating of water side heat-exchange end 26 by accumulation of energy water pump 28 circular flow warps, heating water is through 12 pairs of indoor heat release heating operations of fan coil, heating water after the heat release is sent into accumulation of energy water tank 30 and is stored among accumulation of energy water tank 30, heating water in the accumulation of energy water tank 30 continues the circulation heating through accumulation of energy water pump 28, repeats above-mentioned regenerative operation.After the indoor temperature that reaches setting, the blower fan of fan coil 12 is out of service, and the heat of heating water will all store among accumulation of energy water tank 30, finish heating and regenerative operation process.Cold-producing medium after the condensation heat release after 13 throttlings of second expansion valve to second outdoor air heat exchanger 14, this moment, second outdoor fan 15 was out of service, therefore second outdoor air heat exchanger, 14 not heat exchange substantially, the passage of only being used as cold-producing medium, cold-producing medium is held to k through the l of second four-way change-over valve 11 and is held, enter condensation by the d end, evaporation, liquid storage, the gas liquid type coupled heat exchanger, evaporation absorbs the condensation heat that the first refrigerant compression closed circuit is discharged by primary side heat exchange coil 3, heated refrigerant vapour continues to be repeated above-mentioned double loop heating operation by 9 compressions of second refrigeration compressor.The cool-storage in summer operation is entered the refrigerant side heat exchanger 25 of hot and cold water output heat exchanger 27 by the cold-producing medium after 13 throttlings of second expansion valve, heat in the chilled water of the water side heat-exchange end 26 of evaporation absorption hot and cold water output heat exchanger 27, the chilled water refrigeration is 4 ℃ freezing frozen water and stores among accumulation of energy water tank 30, process of cool and accumulation of heat are just the same, no longer repeat to introduce.
Above-mentioned accumulation of energy operational mode: utilize cheap regenerative electric power water of paddy electricity period at night, cold-storage water, the peak electricity period stops the refrigeration compressor operation by day, relies on the heat release of accumulation of energy water pump, puts the cheap operation of air conditioner of cold water, domestic hot-water supply.
Present embodiment heats different with the domestic hot-water of embodiment 2, it is to be heated by heating pump 29 forced circulation, heating process: the domestic hot-water by heating pump 29 after water side heat-exchange end 22 heating of hot water heat exchanger 10, held to hot water water tank 16 by o, hot water is stored among hot water water tank 16, wherein, running water is entered by running water entrance 42, and the domestic hot-water is through hot water outlet 41 outputs.
Embodiment 4
As shown in Figure 4, be with embodiment 1～3 difference: in the present embodiment, described coupled and heat-exchange device 5 is made of the brazing plate type heat exchanger of the direct contact heat-exchanging form of dividing wall type heat exchanger, brazing plate type heat exchanger is not immersed among the medium 4 in the present embodiment, by the direct coupled and heat-exchange of plate type heat exchanger, but coupled and heat-exchange process and Fig. 1 are just the same, so the course of work is no longer narrated.
Described indoor heat-exchanger rig 60 comprises that exporting heat exchanger 27, accumulation of energy water pump 28 and accumulation of energy water tank 30 by hot and cold water connects and composes the accumulation of energy loop by pipeline; Connect and compose air-conditioning by accumulation of energy water tank 30, exoergic water pump 34, isolation heat exchanger 33, air-conditioner circulating water pump 35 and fan coil 12 by pipeline and isolate output loop.One end of the refrigerant side heat exchanger 25 of described hot and cold water output heat exchanger 27 is connected with the j end of second four-way change-over valve 11, and the other end of the refrigerant side heat exchanger 25 of hot and cold water output heat exchanger 27 is connected with second expansion valve 13; One end of the water side heat-exchange end 26 of described hot and cold water output heat exchanger 27 is connected with a side of accumulation of energy water tank 30, and the other end of the water side heat-exchange end 26 of hot and cold water output heat exchanger 27 connects and composes the air-conditioner energy-accumulation closed circuit by the opposite side of accumulation of energy water pump 28 and accumulation of energy water tank 30; One end of a heat-exchange end 31 of described isolation heat exchanger 33 is connected with a side of described accumulation of energy water tank 30, and the other end of a heat-exchange end 31 of isolation heat exchanger 33 connects and composes air-conditioning exoergic closed circuit by the opposite side of exoergic water pump 34 and described accumulation of energy water tank 30; One end of the secondary heat exchange end 32 of described isolation heat exchanger 33 is connected with a side of described fan coil 12, and the other end of the secondary heat exchange end 32 of isolation heat exchanger 33 connects and composes air conditioning terminal isolation output closed circuit by the opposite side of air-conditioner circulating water pump 35 and described fan coil 12.The described indoor heat-exchanger rig 60 of present embodiment, different with the accumulation of energy mode of embodiment 3, introduce its course of work below in detail:
Course of work during paddy electricity period in winter heat-storage heating heat supply is as follows: the exhaust of second refrigeration compressor 9 is earlier through domestic hot-water's heat exchange coil 10 heating domestic hot-waters, cold-producing medium after the heat release holds the refrigerant side heat exchanger 25 that enters hot and cold water output heat exchanger 27 that cold doubtful heat is reached 26 pairs of heating water heating of water side heat-exchange end through the logical j of the i termination of second four-way change-over valve 11 again, this moment heating water through accumulation of energy water pump 28 after 26 heating of water side heat-exchange end, the mode of heat with water stored among accumulation of energy water tank 30, after reaching the accumulation of heat set water temperature, stop regenerative operation; The heat release operation of peak electricity period is to isolate heat exchanger 33 by the output in parallel with accumulation of energy water tank 30 to finish, exoergic water pump 34 reaches secondary heat exchange end 32 with the heat-exchange end 31 of hot water through isolating heat exchanger 33 that stores in the accumulation of energy water tank 30 with heat, by secondary heat exchange end 32 release heat of heating water through isolating heat exchanger of air-conditioner circulating water pump 35 circulation to the heating of heating water, heated heating water through fan coil 12 to the indoor hot-air heating heat supply running that blows out.
Summer is when freezing, when the power supply period at Gu Dianshi, after 13 throttlings of second expansion valve, enter refrigerant side heat exchanger 25 in the hot and cold water output heat exchanger 27 through the refrigerant liquid after the 14 condensation heat releases of second outdoor air heat exchanger, heat in the chilled water that evaporation absorption water side heat-exchange end 26 flows through, the frozen water that chilled water is cooled to about 4 ℃ stores among accumulation of energy water tank 30; When being in peak electricity or ordinary telegram period, the air conditioner coolant water that will be stored a heat-exchange end 31 pair secondary heat exchange ends 32 of chilled water through isolating heat exchanger 33 in accumulation of energy case 30 by exoergic water pump 34 freezes, and chilled water is blown a cold wind over to indoor refrigeration air-conditioner operation through fan coil 12.Put chilled water after cold by 35 circulations of air-conditioner circulating water pump through fan coil 12, continue by secondary heat exchange end 32 cooling refrigerations, repeat the above-mentioned cold operation of air conditioner of putting.The advantage of this isolation output circulatory system is not pressure-bearing of accumulation of energy water tank 30, can be made of the open-type attemperater.In addition, fan coil 12 air conditioning terminal systems isolate output by isolating heat exchanger 33, and therefore, system has stronger security and stability and reliability, is fit to large-scale central air conditioner system.
Embodiment 5
Shown in 5, be with embodiment 1 to 4 difference: in the present embodiment, described coupled and heat-exchange device 5 comprises hot and cold water output coupled heat exchanger 38, is positioned at evaporimeter 39 and coupling water pump 40 formations of hot and cold water output coupled heat exchanger 38 1 sides.One end of described coupling water pump 40 connects an end of the water side heat-exchange end 36 of hot and cold water output coupled heat exchanger 38, the other end connects an end of the water side heat-exchange end 37 of evaporimeter 39, and the other end of the water side heat-exchange end 36 of described hot and cold water output coupled heat exchanger 38 is connected with the other end of the water side heat-exchange end 37 of described evaporimeter 39; The refrigerant gas entrance end a end of described hot and cold water output coupled heat exchanger 38 is connected with the f end of described first four-way change-over valve 2, and the condensation of refrigerant liquid port of export b end of described hot and cold water output coupled heat exchanger 38 is connected with described first expansion valve 6; The refrigerant gas port of export c end of described evaporimeter 39 is connected with described second refrigeration compressor, 9 suction ends, and the refrigerant liquid import d end of described evaporimeter 39 is connected with the k end of described second four-way change-over valve 11.The heat exchange, damping, the buffer medium 4 that circulate in coupling water pump 40 closed circuits among Fig. 5 are anti-icing fluid.
Described indoor heat-exchanger rig 60 connects and composes air-conditioning output closed circuit by hot and cold water output heat exchanger 27, air-conditioner circulating water pump 35 and fan coil 12 by pipeline successively; One end of the refrigerant side heat exchanger 25 of described hot and cold water output heat exchanger 27 is connected with the j end of described second four-way change-over valve 11, and the other end of the refrigerant side heat exchanger 25 of hot and cold water output heat exchanger 27 is connected with second expansion valve 13; One end of the water side heat-exchange end 26 of hot and cold water output heat exchanger 27 is connected with a side of described fan coil 12, and the other end of the water side heat-exchange end 26 of hot and cold water output heat exchanger 27 is connected by the opposite side of air-conditioner circulating water pump 35 with described fan coil 12; In addition, domestic hot-water's heat exchange water supply installation is not set.
The course of work of winter heating heat supply is: first refrigeration compressor, 1 high-temperature exhaust air is held to f through the e of first four-way change-over valve 2 and is held, hold to the refrigerant side heat exchanger 24 of hot and cold water output coupled heat exchanger 38 through interface a, the condensation heat of the first refrigerant compression closed circuit is released among the heat transferring medium anti-icing fluid of water side heat-exchange end 36 circulations, the anti-icing fluid of heating of being condensed is delivered to the water side heat-exchange end 37 of evaporimeter 39 by coupling water pump 40, heat transferring medium anti-icing fluid is to the heating of the cold-producing mediums in the refrigerant side heat exchanger 17 of evaporimeter 39, with the condenser heat of the first refrigerant compression closed circuit among the cold-producing medium of the second refrigerant compression closed circuit that secondary side heat exchanger 17 coupled and heat-exchanges of anti-icing fluid by evaporimeter 39 circulate to the secondary side heat exchanger 17.Cold-producing medium evaporation after being heated becomes gas and is sucked also compressed by second refrigeration compressor 9, its exhaust is held to j through the i of second four-way change-over valve 11 and is held, enter the refrigerant side heat exchanger 25 of hot and cold water output heat exchanger 27 and heat release to water side heat-exchange end 26, to being heated by the heating water of air-conditioner circulating water pump 35 circular flows through water side heat-exchange end 26, refrigerant liquid after the condensation heat release enters second outdoor air heat exchanger 14 after the 13 throttling step-downs of second expansion valve, this moment, second outdoor fan 15 was closed, so 14 of second outdoor air heat exchangers play the path effect, cold-producing medium passes to the k end by the l end of second four-way change-over valve 11, the heat in the secondary side heat exchanger 17 continuation evaporation absorption water side heat-exchange end 37 heat transferring medium anti-icing fluid of evaporimeter 39.And the heating water of the heating that is condensed continues heating by air-conditioner circulating water pump 35 through water side heat-exchange end 26, by 12 pairs of indoor heating heat supplies of fan coil.
Spring and autumn heat and summer common temperature refrigeration by the second refrigerant compression closed circuit single loop independent operating, its process no longer repeats introduction with above-mentioned the same.
What need statement is; above embodiment only is used for explaining know-why of the present invention; and can not be interpreted as limiting the scope of the invention by any way; all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. ultralow temperature double loop heat pump air-conditioning hot water, it is characterized in that, comprise and have the one-level first refrigerant compression closed circuit at least and have the one-level second refrigerant compression closed circuit at least, the described first refrigerant compression closed circuit is connected with first refrigeration compressor (1) in turn by pipeline, first four-way change-over valve (2), coupled and heat-exchange device (5), first expansion valve (6) and the first outdoor air heat-exchanger rig (43), the described first outdoor air heat-exchanger rig (43) comprise first outdoor air heat exchanger (7) and are located at first outdoor fan (8) of described first outdoor air heat exchanger (7) one sides; The described second refrigerant compression closed circuit is connected with second refrigeration compressor (9) in turn by pipeline, hot water heat-exchanger rig (50), second four-way change-over valve (11), indoor heat-exchanger rig (60), second expansion valve (13), the second outdoor air heat-exchanger rig (44) and coupled and heat-exchange device (5), the described second outdoor air heat-exchanger rig (44) comprises second outdoor air heat exchanger (14) and is located at second outdoor fan (15) of described second outdoor air heat exchanger (14) one sides that described first refrigeration compressor (1) and second refrigeration compressor (9) are controlled operation automatically by frequency conversion.
2. air conditioner water heating machine according to claim 1, it is characterized in that, described coupled and heat-exchange device (5) is by housing and be located at that brazing plate type heat exchanger in the housing constitutes or constitute shell-type spiral coil heat exchanger by housing and the spiral coil be located in the housing, described shell-type spiral coil heat exchanger comprises primary side heat exchange coil (3) and secondary side heat exchange coil (17), described brazing plate type heat exchanger, described primary side heat exchange coil (3), be filled with heat exchange between secondary side heat exchange coil (17) and the housing, damping, buffer medium (4), described heat exchange, damping, buffer medium (4) is cold-producing medium or conduction oil or anti-icing fluid or water.
3. air conditioner water heating machine according to claim 1, it is characterized in that, described coupled and heat-exchange device (5) is by condensation, evaporation, liquid storage, gas-liquid separated coupled heat exchanger constitutes or by the plate type heat exchanger of the direct contact heat-exchanging form of dividing wall type heat exchanger, spiral heat exchanger constitutes or exports coupled heat exchanger (38) by hot and cold water, evaporimeter (39) and coupling water pump (40) constitute, and the water side heat-exchange end (36) of described hot and cold water output coupled heat exchanger (38) and the water side heat-exchange end (37) of described evaporimeter are connected in series via coupling water pump (40) and pipeline and constitute the coupled and heat-exchange loop.
4. air conditioner water heating machine according to claim 1 is characterized in that, described hot water heat-exchanger rig (50) is made of with placing the hot water heat exchange coil (10) in the described hot water water tank (16) hot water water tank (16).
5. air conditioner water heating machine according to claim 1, it is characterized in that, described hot water heat-exchanger rig (50) comprises hot water heat exchanger (10) and is positioned at the hot water water tank (16) of described hot water heat exchanger (10) one sides that the installation site of described hot water water tank (16) is higher than the installation site of described hot water heat exchanger (10).
6. air conditioner water heating machine according to claim 1, it is characterized in that, described hot water heat-exchanger rig (50) comprises hot water heat exchanger (10), is positioned at hot water water tank (16) and the heating pump (29) of described hot water heat exchanger (10) one sides, and described hot water water tank (16), heating pump (29) and hot water heat exchanger (10) connect and compose by pipeline successively.
7. air conditioner water heating machine according to claim 1 is characterized in that, described indoor heat-exchanger rig (60) is made of a typhoon coiler at least.
8. air conditioner water heating machine according to claim 1 is characterized in that, described indoor heat-exchanger rig (60) is connected and composed by pipeline successively by hot and cold water output heat exchanger (27), accumulation of energy water pump (28), accumulation of energy water tank (30) and fan coil (12).
9. air conditioner water heating machine according to claim 1 is characterized in that, described indoor heat-exchanger rig (60) comprises that exporting heat exchanger (27), accumulation of energy water pump (28) and accumulation of energy water tank (30) by hot and cold water connects and composes the accumulation of energy loop by pipeline; Connect and compose air-conditioning by accumulation of energy water tank (30), exoergic water pump (34), isolation heat exchanger (33), air-conditioner circulating water pump (35) and fan coil (12) by pipeline and isolate output loop.
10. air conditioner water heating machine according to claim 1 is characterized in that, described indoor heat-exchanger rig (60) is connected and composed by pipeline successively by hot and cold water output heat exchanger (27), air-conditioner circulating water pump (35) and fan coil (12).
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| CN2013101832975A CN103245122A (en) | 2013-05-16 | 2013-05-16 | Ultra-low-temperature double-circuit heat pump air-conditioning water heater |
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| CN2013101832975A CN103245122A (en) | 2013-05-16 | 2013-05-16 | Ultra-low-temperature double-circuit heat pump air-conditioning water heater |
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| CN106091727A (en) * | 2016-07-20 | 2016-11-09 | 王全龄 | A kind of wind-energy tower heat pump |
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| CN110160171A (en) * | 2019-05-05 | 2019-08-23 | 清华大学 | A kind of multi-mode water ring multi-online air-conditioning system |
| CN110160171B (en) * | 2019-05-05 | 2024-04-30 | 清华大学 | Multi-mode water ring multi-split air conditioning system |
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Application publication date: 20130814 |