Hot water supply and heating system with the employing heat pump of hot water self-circulation system
Technical field
The present invention relates to a kind of hot water supply and heating system of the heat pump of the employing with the hot water self-circulation system, can be used for any employing refrigeration-heat pump air conditioner and need the place of hot water that hot water is provided.
Background technology
The hot water supply relevant to heat pump and firing equipment and a heat pump cycle and a hot water circuit unit are combined, between water and the cold-producing medium by the compressor reducer discharge, carry out heat exchange, thereby formed a heat pump refrigerating loop, carry out hot water supply and floor heating.
In traditional system, to supply water and separate with the pipeline of hot-water supply along the pipeline of the mobile heating of loop, the heat conversion is carried out at the diverse location of the compressor reducer outlet side pipeline in heat pump refrigerating loop.That is to say, in traditional system, be what to be separated for the water-refrigerant heat exchanger heated with the water-refrigerant heat exchanger for hot-water supply.
This hot water supply relevant to heat pump and firing equipment have structure as previously described, therefore have following point.
The first, in the time of need to be thawed operation when the evaporator surface formation frost that forms the heat pump refrigerating circulation, heating and hot water supply function must stop fully, until thaw, have operated.When being thawed operation, hot water can not be supplied, and indoor air temperature also decreases.If also carry out heating operation in the operation of being thawed, heat will transfer to cold-producing medium from water-refrigerant heat exchanger, so the reduction of the temperature of recirculated water, thereby causes the indoor floor temperature to reduce.
The second, even thawing after having operated and can again carry out hot water supply and heating, the hot water that make Heating Cyclic reach a normal level and supply reaches fixed temperature also needs a period of time.
The 3rd, for the water-refrigerant heat exchanger of heating and separate for the water-refrigerant heat exchanger of hot-water supply, so installation process complexity comparatively, and increased manufacturing cost.
The 4th, heated water is discharged use after flowing through water-refrigerant heat exchanger, and the time of heating is short, is again not reach the temperature needed; And when not making water, can not heat more water.
Another method that the evaporator surface that forms the heat pump refrigerating circulation is thawed is, utilizes coordinating the evaporator surface blowing hot-air of electric heater and fan; Perhaps adopt the Electromagnetic Heating mode, utilize electromagnetic field to produce heat at the eddy current of evaporator body induction and make that evaporimeter is heating up to thaw.The shortcoming of above-mentioned two kinds of electrical heating methods is that efficiency is low, and energy consumption is high.
Summary of the invention
The hot water supply and the heating system that the purpose of this invention is to provide a kind of heat pump of the employing with the hot water self-circulation system, what with the solution prior art, exist is thawed while operating, and heating and hot water supply function must stop fully; And the efficiency of heating surface is low, the problem that energy consumption is high.
Technical scheme of the present invention is: a kind of hot water supply and heating system that adopts heat pump, comprise the heat-pump hot-water circulatory system, and this heat-pump hot-water circulatory system comprises an outdoor unit, an indoor unit and a hot water feeding unit; This outdoor unit comprises a compressor reducer, cross valve of an outdoor heat exchanger and a dilation, and carry out the heat pump refrigerant circulation, it is characterized in that, this indoor unit comprises a water-refrigerant heat exchanger of between the cold-producing medium by the compressor reducer discharge and water, carrying out heat exchange, be provided with water inlet and the delivery port of healed water on this water-refrigerant heat exchanger, this water inlet is connected with water source, and this delivery port is connected with described hot water feeding unit.Be provided with on this water-refrigerant heat exchanger between the water inlet of healed water and delivery port and connect a hot water self-circulation system.
One or both sides at the radiating fin of described water-refrigerant heat exchanger are provided with the Electric radiant Heating Film composite bed; this Electric radiant Heating Film composite bed comprises Electric radiant Heating Film, insulated substrate layer and insulating protective layer; surface at radiating fin is provided with insulated substrate layer, Electric radiant Heating Film and insulating protective layer successively, Electric radiant Heating Film by be located at above it or following, slotting comb electrode is connected with power supply.
Described insulated substrate layer adopts the good insulating materials of heat-proof quality, and heatproof is higher than 150 degrees centigrade; This insulating protective layer adopts the insulating materials of good heat conductivity, and heatproof is higher than 150 degrees centigrade.
The material of described insulated substrate layer comprises: fluoroplastics, polyimide, polyether-ether-ketone, liquid crystal polymer or modification of nylon, and can anti-high temperature more than 250 degrees centigrade.
The material of described insulating protective layer comprises: polytetrafluoroethylene (PTFE), aluminium oxide, silica or silicones.
This indoor unit also comprises an indoor evaporator under refrigeration mode, and the refrigerant loop of this indoor evaporator is in parallel with the refrigerant loop of described water-refrigerant heat exchanger by triple valve.
Described hot water self-circulation system comprises circulating pump, water tank and radiator of water tank, is provided with radiator of water tank in water tank, between the water inlet of radiator of water tank by pipeline and circulating pump and described water-refrigerant heat exchanger and delivery port, is connected to closed circuit; Be provided with water supplement port and feed water inlet on water tank, and be connected with described hot water feeding unit with water source respectively.
The invention has the beneficial effects as follows: the electric heating film for heating be compounded on evaporimeter (condenser) radiating fin is even, directly sees through the insulating barrier heat radiation that the outer surface thermal conductivity is good, realizes the purpose that evaporator surface heating defrosting is thawed, and the efficiency of heating surface is high, and energy consumption is low; Do not change in shape original structure, not needing increases extra device, takes up room little; The insulating barrier thermal conductivity of Electric radiant Heating Film outer surface is good, and evaporator surface is played to the effect of protection, greatly increases the service life; Temperature Automatic-heating defrosting at any time according to evaporator surface, do not need to stop the work of main frame, can hot water without interruption.The self-circulation system utilize supplied water, can utilize heat energy fully in the situation that do not use hot water by the circulating-heating ceaselessly of the water in water tank, saved heat energy, facilitated use.
The accompanying drawing explanation
Fig. 1 is the overall formation schematic diagram of one embodiment of the invention;
Fig. 2 is the Electric radiant Heating Film on evaporimeter radiating fin of the present invention surface and the structural representation of comb electrode;
Fig. 3 is the layer structural representation of Fig. 2.
The specific embodiment
Referring to Fig. 1~Fig. 3, hot water supply and the heating system of a kind of heat pump of the employing with the hot water self-circulation system of the present invention, comprise the heat-pump hot-water circulatory system, this heat-pump hot-water circulatory system comprises an outdoor unit A, an indoor unit B and a hot water feeding unit C; This outdoor unit A comprises that 1, one outdoor heat exchanger 3(of a compressor reducer is evaporimeter under heat pump mode), a cross valve 2 and an expansion valve 4; This indoor unit B comprises that an indoor evaporator 7(is containing electric fan 6), the refrigerant loop of this indoor evaporator 7 is in parallel with the refrigerant loop of described water-refrigerant heat exchanger 9 by triple valve 5, when indoor need to the refrigeration, crossover tee valve 5 makes cold-producing medium flow through the indoor set of indoor evaporator 7(common air-conditioning).Above system connects in the usual way and carries out the heat pump refrigerant circulation.It is characterized in that, this indoor unit B comprise one between the cold-producing medium by compressor reducer 1 discharge and water, carry out heat exchange water-refrigerant heat exchanger 9(is tube shell type structure, cold-producing medium is in the interior circulation of inner hot channel 8), be provided with water inlet a and the delivery port b of healed water on this water-refrigerant heat exchanger 9.Connect a hot water self-circulation system D between this water inlet a and delivery port b.Described hot water self-circulation system D comprises circulating pump 10, water tank 13 and radiator of water tank 14, be provided with radiator of water tank 14 in water tank 13, between the water inlet a of radiator of water tank 14 by pipeline and circulating pump 10 and described water-refrigerant heat exchanger and delivery port b, be connected to closed circuit.Be provided with water supplement port c and feed water inlet d on water tank 13, and be connected with hot water feeding unit 11 with water source 12 respectively.Due to the hot water self-circulation system D that has increased independent loops, so, no matter whether water tank 13 exports hot water, can not affect the heating to water in water tank, utilized fully heat energy, also guaranteed the temperature of water.
Radiating fin in described water-refrigerant heat exchanger 3 is (easy in order to know, mean radiating fin with mark 3 in Fig. 2 and Fig. 3) one or both sides be provided with the Electric radiant Heating Film composite bed, this Electric radiant Heating Film composite bed comprises Electric radiant Heating Film 32, insulated substrate layer 33, insulating protective layer 34 and comb electrode 31, surface at radiating fin 3 is provided with insulated substrate layer 33 successively, Electric radiant Heating Film 32 and insulating protective layer 34, Electric radiant Heating Film 32 is by being located at above it or following, slotting comb electrode 31(is provided with to binding post 311 on each comb electrode 31) with heating power supply, be connected, also for the electrical connection between each radiating fin 3 (connecting with wire or screw).
Described insulated substrate layer 33 adopts the good insulating materials of heat-proof quality, and heatproof is higher than 150 degrees centigrade.The material that insulated substrate is 33 layers comprises: fluoroplastics, polyimide, polyether-ether-ketone, liquid crystal polymer or modification of nylon, and can anti-high temperature more than 250 degrees centigrade.
This insulating protective layer 34 adopts the insulating materials of good heat conductivity, and heatproof is higher than 150 degrees centigrade.The material of insulating protective layer 34 comprises: polytetrafluoroethylene (PTFE), aluminium oxide, silica or silicones.
Electric radiant Heating Film 32 adopts conventional material and technique to make; Insulated substrate layer 33 and insulating protective layer 34 adopt common process to make, as coating or casting technique; Comb electrode 31 can adopt typography or the preparation of other common process.