CN103344040A - Heat-pump water heater and defrosting control method - Google Patents
Heat-pump water heater and defrosting control method Download PDFInfo
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- CN103344040A CN103344040A CN2013102568908A CN201310256890A CN103344040A CN 103344040 A CN103344040 A CN 103344040A CN 2013102568908 A CN2013102568908 A CN 2013102568908A CN 201310256890 A CN201310256890 A CN 201310256890A CN 103344040 A CN103344040 A CN 103344040A
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Abstract
The invention discloses a heat-pump water heater. The heat-pump water heater comprises a compressor, a condenser, a throttling assembly, an evaporator, a water pumping device, a shunting device, a temperature detection device and a control device. One end of the water pumping device is connected with a water inlet pipe, the other end of the water pumping device is connected with a water inlet of the condenser, and the water pumping device is used for pumping water into the condenser. The inlet end of the shunting device is connected with a water outlet of the condenser, one outlet end of the shunting device is connected with a water outlet pipe, the other outlet end of the shunting device is correspondingly connected with a water inlet of the evaporator, and the shunting device is used for shunting water flowing out of the condenser. The temperature detection device is arranged in the position of an evaporator working medium inlet and used for detecting the temperature T of the position of the evaporator working medium inlet. The control device is connected with the temperature detection device and the shunting device and used for controlling shunting of the shunting device according to the temperature T, and therefore defrosting can be conducted. The invention further discloses a defrosting control method of the heat-pump water heater. The defrosting control method achieves the purpose of defrosting and will not hinder water heating of the heat-pump water heater.
Description
Technical field
The present invention relates to field of water heaters, relate in particular to a kind of Teat pump boiler and defrosting control method thereof.
Background technology
Teat pump boiler is to utilize contrary Carnot's principle, thereby airborne heat is delivered to the equipment of producing hot water in the water by working medium.Teat pump boiler is in when work, and itself only consumes part energy, and namely the merit that consumes of whole Teat pump boiler only is the sub-fraction in the output work, so Teat pump boiler can be saved a large amount of electric energy.Yet when moving under the Teat pump boiler situation that outdoor temperature is lower in the winter time, the surface temperature of outdoor finned evaporator can reach subzero, the surface of evaporimeter may frosting, and thick frost layer can cause the air constricted flow, influences the outlet capacity that heats of Teat pump boiler; Long-time running may cause system the protectiveness shutdown to occur, thereby has influence on service life of a machine.
Teat pump boiler mainly adopts the dual mode defrosting at present: a kind of is to shut down defrosting; allow frost oneself melt; this mode can't be carried out when environment temperature is low, and the defrost time is longer, also can't provide hot water by the compressor assembly of Teat pump boiler in the defrost process.Another kind is to change the working medium flow direction by reversal valve to carry out reverse cycle defrosting, heat by the compressor wasted work melts frost, this mode can't provide hot water by the compressor assembly of Teat pump boiler, even need absorb heat or could defrost by auxiliary electrical heating from water, and the halfway situation that defrosts may appear.
To sum up, need the good Teat pump boiler of a kind of defrosting effect badly.
Summary of the invention
Main purpose of the present invention provides a kind of Teat pump boiler, is intended to improve the defrosting efficiency of Teat pump boiler.
For reaching above purpose, the invention provides a kind of Teat pump boiler, comprise compressor, condenser, throttle part and evaporimeter, form the working medium loop between described compressor, condenser, throttle part and the evaporimeter, described Teat pump boiler also comprises: water draw-out device and part flow arrangement, wherein said water draw-out device one end connects water inlet pipe, and the other end connects the water inlet of condenser, is used for water is extracted to described condenser; The arrival end of described part flow arrangement connects the delivery port of condenser, and a port of export of described part flow arrangement connects outlet pipe, and the corresponding water inlet that connects evaporimeter of another port of export is used for the water of the delivery port of condenser is shunted;
Described temperature-detecting device is arranged on evaporimeter working medium porch, for detection of the temperature T of evaporimeter working medium porch;
Described control device comprises:
The temperature acquisition module is connected with described temperature-detecting device, is used for obtaining the temperature T of the evaporimeter working medium porch that temperature-detecting device detects;
The defrosting control module, be connected with temperature acquisition module and part flow arrangement respectively, be used for when described temperature T is lower than preset temperature T1 and continues Preset Time H1, send the defrosting instruction, with the control part flow arrangement hot water that the condenser delivery port flows out is shunted, a part is flowed out by the outlet pipe of Teat pump boiler, and another part flow to and carries out defrost in the evaporimeter; Also be used for when described temperature T is higher than preset temperature T2 or lasting defrosting time and reaches Preset Time H2, sending and withdrawing from the defrosting instruction, with the control part flow arrangement hot water that the condenser delivery port flows out all flowed out by outlet pipe.
Preferably, connection place of described water draw-out device and water inlet pipe also is communicated with the discharge outlet of evaporimeter.
Preferably, be provided with check valve between the discharge outlet of connection place of described water draw-out device and water inlet pipe and evaporimeter.
Preferably, described water draw-out device is water pump.
Preferably, described part flow arrangement is electronic shunt valve, and perhaps described part flow arrangement comprises two control valves.
Preferably, also comprise antifreeze breather valve, this antifreeze breather valve is arranged on the inlet pipeline of evaporimeter, one end and extraneous conducting.
Preferably, described control device also comprises:
Antifreeze control module is connected with defrosting control module and antifreeze breather valve respectively, is used for sending when withdrawing from defrosting and instructing in the defrosting control module, send antifreeze instruction, to open antifreeze breather valve, control antifreeze breather valve and communicate with air, allow the interior water of evaporimeter all be withdrawn into condenser; Also be used for continuing the time of opening when reaching Preset Time H3 at antifreeze breather valve, send and withdraw from antifreeze instruction, close to control antifreeze breather valve.
Preferably, described preset temperature T1 is 0-3 ℃, and described preset temperature T2 is 10-20 ℃, and described Preset Time H1 is 25-50 minute, and described Preset Time H2 is 5-20 minute, and described Preset Time H3 is 0-300 second.
Preferably, described evaporimeter comprises many row's heat exchanger tubes, and the port of export place that described part flow arrangement connects evaporimeter is provided with water collector, and the entrance of this water collector is connected with the port of export of part flow arrangement, the corresponding water inlet that connects each row's evaporimeter of outlet; The discharge outlet of each row's evaporimeter also is provided with water collector, and the corresponding discharge outlet with each row's evaporimeter of the entrance of this water collector is connected, and outlet connects connection place of water draw-out device and water inlet pipe.
Accordingly, the embodiment of the invention also provides a kind of defrosting control method of Teat pump boiler, and this Teat pump boiler is above-mentioned Teat pump boiler with control device, and described defrosting control method may further comprise the steps:
Obtain the temperature T of the evaporimeter working medium porch that temperature-detecting device detects;
When temperature T is lower than preset temperature T1 and continues Preset Time H1, control device sends the defrosting instruction, with the control part flow arrangement hot water that the condenser delivery port flows out is shunted, a part is flowed out by the outlet pipe of Teat pump boiler, and another part flow to and carries out defrost in the evaporimeter;
When temperature T was higher than preset temperature T2 or lasting defrosting time and reaches Preset Time H2, control device sent and withdrawing from the defrosting instruction, with the control part flow arrangement hot water that the condenser delivery port flows out is all flowed out by outlet pipe.
Preferably, the defrosting control method of above-mentioned Teat pump boiler also comprises:
Send in control and to withdraw from when instruction defrosting, control device sends antifreeze instruction, to open antifreeze breather valve, controls antifreeze breather valve and communicates with air, allows the interior water of evaporimeter all be withdrawn into condenser;
Continue the time of opening when reaching Preset Time H3 at antifreeze breather valve, control device sends and withdraws from antifreeze instruction, closes to control antifreeze breather valve.
Preferably, described preset temperature T1 is 0-3 ℃, and described preset temperature T2 is 10-20 ℃, and described Preset Time H1 is 25-50 minute, and described Preset Time H2 is 5-20 minute, and described Preset Time H3 is 0-300 second.
The embodiment of the invention arranges part flow arrangement by the delivery port place at condenser, makes when Teat pump boiler need defrost, and the control part flow arrangement to evaporimeter, had both reached the purpose of defrosting with a part of flow of hot water, did not hinder Teat pump boiler to produce hot water again.And utilize hot water that it is defrosted, and both accelerated defrosting time, make defrosting thoroughly again, improved defrosting efficiency.
Description of drawings
Fig. 1 is the structural representation of Teat pump boiler first embodiment of the present invention;
Fig. 2 is the high-level schematic functional block diagram of the control device of Teat pump boiler among Fig. 1;
Fig. 3 is the structural representation of Teat pump boiler second embodiment of the present invention;
Fig. 4 is the structural representation of Teat pump boiler the 3rd embodiment of the present invention;
Fig. 5 is the structural representation of Teat pump boiler the 4th embodiment of the present invention;
Fig. 6 is the structural representation of evaporimeter in the Teat pump boiler of the present invention;
Fig. 7 is the schematic flow sheet of defrosting control method first embodiment of Teat pump boiler of the present invention;
Fig. 8 is the schematic flow sheet of defrosting control method second embodiment of Teat pump boiler of the present invention.
The realization of the object of the invention, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
With reference to Fig. 1, the structural representation of Teat pump boiler first embodiment of the present invention has been proposed.The Teat pump boiler of this embodiment comprises compressor 1, condenser 2, throttle part 10, evaporimeter 3, water draw-out device 4, part flow arrangement 5.Wherein, compressor 1 has gas outlet 11 and air inlet 12.Condenser 2 has working medium import 21, sender property outlet 22, water inlet 23, delivery port 24.Evaporimeter 3 has working medium import 31, sender property outlet 32, water inlet 33, delivery port 34.The gas outlet 11 of compressor 1 is communicated with the working medium import 21 of condenser 2, and the sender property outlet 22 of condenser 2 is communicated with the working medium import 31 of evaporimeter 3 through throttle part 10, and the sender property outlet 32 of evaporimeter 3 is communicated with the air inlet 12 of compressor 1.Therefore compressor 1, condenser 2, throttle part 10 and evaporimeter 3 form the working medium loop.
Water draw-out device 4 one ends are communicated with water inlet pipe 101, and the other end is communicated with the water inlet 23 of condenser 2.This water draw-out device 4 is used for water is extracted to condenser 2, and the water that enters in the condenser 2 produces hot water through after the heat exchange, and is flowed out by the delivery port 24 of condenser 2.Will be by the shunting of part flow arrangement 5 by the hot water that the delivery port 24 of condenser 2 flows out.One port of export of part flow arrangement 5 is communicated with outlet pipe 102, and another port of export is communicated with the water inlet 33 of evaporimeter 3.In the present embodiment, this water draw-out device 4 is water pump, can certainly other have the device of pumping function, does not limit at this.
Above-mentioned Teat pump boiler is when operate as normal, and outdoor air carries out heat exchange by evaporimeter 3, and the working medium heat absorption vaporization of evaporimeter 3 inside also is inhaled into compressor 1, and compressor 1 is compressed into them high temperature, gases at high pressure and sends into condenser 2.Send into the water of condenser 2 this moment by water draw-out device 4 through after the heating of working medium, by outlet pipe 102 outputs.The working medium that process condenser 2 carries out after the heat exchange will be cooled to liquid, and this liquid working substance will be sent into evaporimeter 3 again.By above-mentioned periodic duty, make heat energy in air constantly be passed in the water, after improving water temperature, use for the user.When needs when action defrosting, can control part flow arrangement 5 with a part of flow of hot water of condenser 2 to evaporimeter 3, to utilize hot water evaporimeter 3 is defrosted.Water after evaporimeter 3 defrosts can be discharged by discharge outlet 34.
The Teat pump boiler of present embodiment also comprises control device 200 and is arranged on the temperature-detecting device 300 of evaporimeter 3 working medium porch 31.This control device 200 has receiving terminal and control end, and this receiving terminal is connected with temperature-detecting device 300, and this control end is connected with part flow arrangement 5.This control device 200 is used for judging whether to reach according to the temperature that temperature-detecting device 300 detects the condition of defrosting, is then to produce control signal, and the shunting of control part flow arrangement 5 is to reach the purpose of defrosting.In the present embodiment, being connected between control device 200 and temperature-detecting device 300 and the part flow arrangement 5 can also can be wireless connections for being electrically connected.
The concrete structure of above-mentioned control device 200 as shown in Figure 2, it comprises:
Defrosting control module 230, be connected with temperature acquisition module 220 and part flow arrangement 5 respectively, be used for when described temperature T is lower than preset temperature T1 and continues Preset Time H1, send the defrosting instruction, with the control part flow arrangement hot water that the condenser delivery port flows out is shunted, a part is flowed out by the outlet pipe of Teat pump boiler, and another part flow to and carries out defrost in the evaporimeter; Also be used for when described temperature T is higher than preset temperature T2 or lasting defrosting time and reaches Preset Time H2, sending and withdrawing from the defrosting instruction, with the control part flow arrangement hot water that the condenser delivery port flows out all flowed out by outlet pipe.
Particularly, above-mentioned memory module 210 can be read-only storage, does not allow change behind the setting preset value when dispatching from the factory.This memory also can be for wiping the memory of memory, in the use of Teat pump boiler, and can be according to the concrete condition of Teat pump boiler and preset value is set flexibly.Therefore, 210 of preset value acquisition modules obtain Preset Time H1, preset temperature T2 and Preset Time H2 from memory.
Temperature-detecting device 300 detects the temperature T of evaporimeter working medium porch in real time, and 220 of temperature acquisition modules obtain the temperature that temperature-detecting device 300 detects, and sends it to defrosting control module 230.230 temperature that detect according to temperature-detecting device 300 of defrosting control module judge whether to reach defrosting conditioned disjunction defrosting exit criteria, are then to carry out corresponding defrosting or withdraw from defrosting.The defrosting condition of present embodiment setting is: temperature T is lower than preset temperature T1 and continues Preset Time H1; Withdrawing from the defrost condition is: described temperature T is higher than preset temperature T2 or lasting defrosting time reaches Preset Time H2.When carrying out defrost, defrosting control module 230 control part flow arrangements 5 start the shunting function, so that the hot water that the condenser delivery port flows out is shunted, a part is flowed out by the outlet pipe of Teat pump boiler, and another part flow to and carries out defrost in the evaporimeter.When withdrawing from defrost, 230 control of defrosting control module part flow arrangement is closed the shunting function, so that the hot water that the condenser delivery port flows out is all flowed out by outlet pipe.
In the present embodiment, described preset temperature T1 is 0-3 ℃, and described preset temperature T2 is 10-20 ℃, and described Preset Time H1 is 25-50 minute, and described Preset Time H2 is 5-20 minute.
Be understandable that the defrosting condition in the present embodiment can also embody with the frosting degree, namely judge whether to carry out defrost according to the frosting degree in the evaporimeter.In addition, said temperature checkout gear 300 can be temperature sensor.Control device 200 can be realized by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better embodiment under a lot of situation.In addition, this control device 200 can be same device with the control device of Teat pump boiler, also can independently exist.
Therefore, the embodiment of the invention arranges part flow arrangement 5 by the delivery port place at condenser 2, make when Teat pump boiler need defrost, control part flow arrangement 5 with a part of flow of hot water to evaporimeter, both reach the purpose of defrosting, and do not hindered Teat pump boiler to produce hot water again.And utilize hot water that it is defrosted, and both accelerated defrosting time, make defrosting thoroughly again, improved defrosting efficiency.
Further, as shown in Figure 3, second embodiment of Teat pump boiler has been proposed.On the basis of first embodiment, the part flow arrangement 5 of this embodiment is made up of first control valve 6 and second control valve 7.Be specially: second control valve 7 is arranged on the pipeline between the water inlet of the delivery port 24 of condenser and evaporimeter, and first control valve 6 is arranged between the delivery port 24 of condenser and the outlet pipe on the pipeline.Regulate first control valve 6 and second control valve 7 by interlock, can reach the balance purpose of hot water supply and defrost.Certainly, this part flow arrangement can also be electronic shunt valve, to regulate the flow of two water sides.This part flow arrangement also can only comprise second control valve 7.
Thoroughly discharge for the cold water after the defrost that makes in the evaporimeter 3, in case residual water freezes, the present invention proposes the 3rd embodiment of Teat pump boiler in evaporimeter 3.As shown in Figure 4, on the basis of first embodiment, the discharge outlet 34 of evaporimeter 3 is connected the end connection of water inlet pipe 101 in the present embodiment with water draw-out device 4.Therefore, water residual in the evaporimeter 3 can be discharged from discharge outlet 34, and extracts to condenser by water draw-out device 4.Present embodiment is waste water resource not, after the hot water that defrost is used becomes cold water through defrost, will be circulated to again and continue in the water draw-out device 4 to use.
Further, be provided with check valve 8 between the discharge outlet 34 of above-mentioned evaporimeter 3 and the water draw-out device 4.By in the discharge pipe line of evaporimeter 3, increasing check valve 8, can avoid the cold water in the water inlet pipe 101 to flow backward in the evaporimeter 8.
Thoroughly discharge for the cold water after the defrost that makes in the evaporimeter 3, in case residual water freezes, the invention allows for the 4th embodiment of Teat pump boiler in evaporimeter 3.As shown in Figure 5, on the basis of the 3rd embodiment, also comprise antifreeze breather valve 9 in the present embodiment, an end conducting external world of this antifreeze breather valve 9, the other end connects the water inlet 33 of evaporimeter 3.Under normal condition and the defrost situation, this antifreeze breather valve 9 is closed always.When defrost finished, this antifreeze breather valve 9 was opened, and the delivery port of closing condenser flows to the path of evaporimeter.By the unlatching of breather valve 9, make easier the extracting of water in the evaporimeter 3.
In the present embodiment, memory module 210 also is used for storage Preset Time H3.Control device 200 also comprises:
As shown in Figure 6, above-mentioned evaporimeter 3 can be made up of many rows heat exchanger tube 35.Wherein at least 1 row is used for carrying out the circulation of defrost hot water.The discharge outlet 34 of the port of export of described part flow arrangement 5 and evaporimeter 3 is equipped with water collector 20,30.The entrance of water collector 20 is connected with the port of export of part flow arrangement 5, and the corresponding water inlet with each row's heat exchanger tube of outlet is communicated with.The entrance of water collector 30 is communicated with the delivery port of each row's heat exchanger tube, and outlet then is communicated with the place of connection of water draw-out device 4 and water inlet pipe 101.Water collector shown in Figure 6 is 2 tunnel inflows, outflow evaporimeter 3.
Accordingly, the present invention proposes a kind of defrosting control method first embodiment of Teat pump boiler.As shown in Figure 7, this control method may further comprise the steps:
Step S101, startup Teat pump boiler, control compressor, condenser, evaporimeter form the working medium closed circuit, control the water draw-out device simultaneously water is extracted to condenser;
Step S102, obtain Preset Time H1, preset temperature T2 and Preset Time H2;
Step S103, obtain the temperature T of the evaporimeter working medium porch that temperature-detecting device detects;
Above-mentioned Teat pump boiler is when operate as normal, and outdoor air carries out heat exchange by evaporimeter, and the working medium heat absorption vaporization of evaporimeter 3 inside also is inhaled into compressor, and compressor is compressed into them high temperature, gases at high pressure and sends into condenser.Send into the water of condenser this moment by the water draw-out device through after the heating of working medium, exported by outlet pipe.The working medium that the process condenser carries out after the heat exchange will be cooled to liquid, and this liquid working substance will be sent into evaporimeter again.By above-mentioned periodic duty, make heat energy in air constantly be passed in the water, after improving water temperature, use for the user.In the Teat pump boiler running, can detect evaporimeter working medium inlet temperature T in real time.
Step S104, judge whether temperature T is lower than preset temperature T1 and continues Preset Time H1; Be otherwise change step S105 over to, otherwise change step S103 over to;
When detecting this inlet temperature and be lower than preset temperature T1 and continue Preset Time H1, the then expression action that need defrost.
Step S105, control device send the defrosting instruction, with the control part flow arrangement hot water that the condenser delivery port flows out are shunted, and a part is flowed out by the outlet pipe of Teat pump boiler, and another part flow to and carries out defrost in the evaporimeter;
Judge when defrosting that this timed unit will send the defrosting instruction, with the control part flow arrangement with a part of flow of hot water of condenser to evaporimeter, to utilize hot water evaporimeter is defrosted.Water after the evaporimeter defrost can be discharged by discharge outlet.Can use user's hot water when avoiding defrosting to impact, then can send defrosting and selecting prompting, select whether to enter immediately defrost for the user.If it is then to enter defrost immediately that the user selects.If the user selects not, then defrost is carried out in time-delay.
Step S106, in Defrost operation, obtain evaporimeter working medium inlet temperature T in real time, record continues defrosting time t1 simultaneously;
When defrosting action, still detect the working medium inlet temperature T of evaporimeter in real time, simultaneously defrosting time is carried out timing.
Step S107, judge whether temperature T is higher than preset temperature T2 or whether lasting defrosting time t1 reaches Preset Time H2; Be then to change step S108 over to, otherwise change step S106 over to;
When this inlet temperature T is higher than preset temperature T2 or lasting defrosting time t1 and reaches Preset Time H2, represent that then defrost finishes.
Step S108, control device send and withdraw from the defrosting instruction, with the control part flow arrangement hot water that the condenser delivery port flows out are all flowed out by outlet pipe.
Judge when defrost finishes that control device will send and withdraw from the defrost instruction, with the control part flow arrangement hot water that the condenser delivery port flows out all be flowed out by outlet pipe.
Therefore, the embodiment of the invention is by when Teat pump boiler need defrost, and the control part flow arrangement to evaporimeter, had both reached the purpose of defrosting with a part of flow of hot water, did not hinder Teat pump boiler to produce hot water again.And utilize hot water that it is defrosted, and both accelerated defrosting time, make defrosting thoroughly again, improved defrosting efficiency.
As shown in Figure 8, the present invention proposes defrosting control method second embodiment of Teat pump boiler.On the basis of first embodiment, the defrosting control method of present embodiment Teat pump boiler also comprises:
Step S109, send at control device and to withdraw from when instruction defrosting, control device sends antifreeze instruction, to open antifreeze breather valve, controls antifreeze breather valve and communicates with air, allows the interior water of evaporimeter all be withdrawn into condenser;
Step S110, the antifreeze breather valve of record continue to open time t2;
Step S111, judge whether t2 reaches Preset Time H3; Be then to change step S112 over to; Otherwise change step S110 over to;
Step S112, control device send and withdraw from antifreeze instruction, close to control antifreeze breather valve.
Thoroughly discharge for the cold water after the defrost that makes in the evaporimeter, in case residual water freezes in evaporimeter, water residual in the evaporimeter of the embodiment of the invention can be discharged from discharge outlet.Also can send at control device and withdrawing from when instruction defrosting, send antifreeze instruction again, to open antifreeze breather valve, control antifreeze breather valve and communicate with air.At this moment, the water in the evaporimeter is all drawn back to condenser by the water draw-out device.Present embodiment is waste water resource not, after the hot water that defrost is used becomes cold water through defrost, will be circulated to again and continue in the water draw-out device to use.
When the water in the evaporimeter was all drawn back to the condenser, then control device sent and withdraws from antifreeze instruction, closes to control antifreeze breather valve.Whether in the present embodiment, a level sensor can be set in evaporimeter, all discharge with the water in the induction evaporation mode device, be then to close antifreeze breather valve.Perhaps close antifreeze breather valve after reaching Preset Time H3 continuing the time of opening at antifreeze breather valve.
In the present embodiment, above-mentioned preset temperature T1 is 0-3 ℃, and described preset temperature T2 is 10-20 ℃, and described Preset Time H1 is 25-50 minute, and described Preset Time H2 is 5-20 minute, and described Preset Time H3 is 0-300 second.
Be understandable that the invention described above embodiment sequence number does not represent the quality of embodiment just to description.And above-described embodiment just illustrates the principle process of technical solution of the present invention, do not limit protection scope of the present invention.
The above only is the preferred embodiments of the present invention; be not so limit its claim; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (12)
1. Teat pump boiler, comprise compressor, condenser, throttle part and evaporimeter, form the working medium loop between described compressor, condenser, throttle part and the evaporimeter, it is characterized in that, described Teat pump boiler also comprises: water draw-out device, part flow arrangement, temperature-detecting device and control device, wherein
Described water draw-out device one end connects water inlet pipe, and the other end connects the water inlet of condenser, is used for water is extracted to described condenser;
The arrival end of described part flow arrangement connects the delivery port of condenser, and a port of export of described part flow arrangement connects outlet pipe, and the corresponding water inlet that connects evaporimeter of another port of export is used for the water outlet of condenser is shunted;
Described temperature-detecting device is arranged on evaporimeter working medium porch, for detection of the temperature T of evaporimeter working medium porch;
Described control device comprises:
The temperature acquisition module is connected with described temperature-detecting device, is used for obtaining the temperature T of the evaporimeter working medium porch that temperature-detecting device detects;
The defrosting control module, be connected with temperature acquisition module and part flow arrangement respectively, be used for when described temperature T is lower than preset temperature T1 and continues Preset Time H1, send the defrosting instruction, with the control part flow arrangement hot water that the condenser delivery port flows out is shunted, a part is flowed out by the outlet pipe of Teat pump boiler, and another part flow to and carries out defrost in the evaporimeter; Also be used for when described temperature T is higher than preset temperature T2 or lasting defrosting time and reaches Preset Time H2, sending and withdrawing from the defrosting instruction, with the control part flow arrangement hot water that the condenser delivery port flows out all flowed out by outlet pipe.
2. Teat pump boiler according to claim 1 is characterized in that, connection place of described water draw-out device and water inlet pipe also is communicated with the discharge outlet of evaporimeter.
3. Teat pump boiler according to claim 2 is characterized in that, is provided with check valve between connection place of described water draw-out device and water inlet pipe and the discharge outlet of evaporimeter.
4. Teat pump boiler according to claim 1 is characterized in that, described water draw-out device is water pump.
5. Teat pump boiler according to claim 1 is characterized in that, described part flow arrangement is electronic shunt valve, and perhaps described part flow arrangement comprises two control valves.
6. according to each described Teat pump boiler of claim 1-5, it is characterized in that also comprise antifreeze breather valve, this antifreeze breather valve is arranged on the inlet pipeline of evaporimeter, one end and extraneous conducting.
7. Teat pump boiler according to claim 6 is characterized in that, described control device also comprises:
Antifreeze control module is connected with defrosting control module and antifreeze breather valve respectively, is used for sending when withdrawing from defrosting and instructing in the defrosting control module, send antifreeze instruction, to open antifreeze breather valve, control antifreeze breather valve and communicate with air, allow the interior water of evaporimeter all be withdrawn into condenser; Also be used for continuing the time of opening when reaching Preset Time H3 at antifreeze breather valve, send and withdraw from antifreeze instruction, close to control antifreeze breather valve.
8. Teat pump boiler according to claim 7 is characterized in that, described preset temperature T1 is 0-3 ℃, described preset temperature T2 is 10-20 ℃, described Preset Time H1 is 25-50 minute, and described Preset Time H2 is 5-20 minute, and described Preset Time H3 is 0-300 second.
9. Teat pump boiler according to claim 1, it is characterized in that, described evaporimeter comprises many row's heat exchanger tubes, the port of export place that described part flow arrangement connects evaporimeter is provided with water collector, the entrance of this water collector is connected with the port of export of part flow arrangement, the corresponding water inlet that connects each row's evaporimeter of outlet; The discharge outlet of each row's evaporimeter also is provided with water collector, and the corresponding discharge outlet with each row's evaporimeter of the entrance of this water collector is connected, and outlet connects connection place of water draw-out device and water inlet pipe.
10. the defrosting control method of a Teat pump boiler is characterized in that, this Teat pump boiler is the described Teat pump boiler of claim 1, and described defrosting control method may further comprise the steps:
Obtain the temperature T of the evaporimeter working medium porch that temperature-detecting device detects;
When temperature T is lower than preset temperature T1 and continues Preset Time H1, control device sends the defrosting instruction, with the control part flow arrangement hot water that the condenser delivery port flows out is shunted, a part is flowed out by the outlet pipe of Teat pump boiler, and another part flow to and carries out defrost in the evaporimeter;
When temperature T was higher than preset temperature T2 or lasting defrosting time and reaches Preset Time H2, control device sent and withdrawing from the defrosting instruction, with the control part flow arrangement hot water that the condenser delivery port flows out is all flowed out by outlet pipe.
11. the defrosting control method of Teat pump boiler according to claim 10 is characterized in that, also comprises:
Send at control device and to withdraw from when instruction defrosting, send antifreeze instruction again, to open antifreeze breather valve, control antifreeze breather valve and communicate with air, allow the interior water of evaporimeter all be withdrawn into condenser;
Continue the time of opening when reaching Preset Time H3 at antifreeze breather valve, control device sends and withdraws from antifreeze instruction, closes to control antifreeze breather valve.
12. the defrosting control method of Teat pump boiler according to claim 11, it is characterized in that, described preset temperature T1 is 0-3 ℃, described preset temperature T2 is 10-20 ℃, described Preset Time H1 is 25-50 minute, described Preset Time H2 is 5-20 minute, and described Preset Time H3 is 0-300 second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571183A (en) * | 2016-02-24 | 2016-05-11 | 珠海格力电器股份有限公司 | Air conditioning system |
| WO2017185707A1 (en) * | 2016-04-26 | 2017-11-02 | 广东美的暖通设备有限公司 | Heat pump water heater and defrosting control method and device thereof |
| CN109477690A (en) * | 2016-09-27 | 2019-03-15 | 松下知识产权经营株式会社 | Heat exchanger and refrigerating circulatory device with it |
| CN109945399A (en) * | 2019-03-20 | 2019-06-28 | 珠海格力电器股份有限公司 | defrosting method and air conditioner |
| CN110513914A (en) * | 2019-08-23 | 2019-11-29 | 青岛海信日立空调系统有限公司 | A kind of heat pump heat distribution system and its control method |
| CN112128838A (en) * | 2020-09-15 | 2020-12-25 | 青岛众链创新技术研究院有限公司 | Frost prevention heat pump system |
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| JP2006220357A (en) * | 2005-02-10 | 2006-08-24 | Matsushita Electric Ind Co Ltd | Heat pump water heater |
| CN201508094U (en) * | 2009-08-12 | 2010-06-16 | 四川澳尔空调冷冻设备有限公司 | Energy-saving hot water defrosting device for low-temperature cold storages |
| CN202133205U (en) * | 2011-06-08 | 2012-02-01 | 佛山铠耐空调设备有限公司 | Efficient defrosting device of an air-source heat pump water-heater set |
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| JP2006220357A (en) * | 2005-02-10 | 2006-08-24 | Matsushita Electric Ind Co Ltd | Heat pump water heater |
| CN201508094U (en) * | 2009-08-12 | 2010-06-16 | 四川澳尔空调冷冻设备有限公司 | Energy-saving hot water defrosting device for low-temperature cold storages |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571183A (en) * | 2016-02-24 | 2016-05-11 | 珠海格力电器股份有限公司 | Air conditioning system |
| WO2017185707A1 (en) * | 2016-04-26 | 2017-11-02 | 广东美的暖通设备有限公司 | Heat pump water heater and defrosting control method and device thereof |
| CN109477690A (en) * | 2016-09-27 | 2019-03-15 | 松下知识产权经营株式会社 | Heat exchanger and refrigerating circulatory device with it |
| CN109477690B (en) * | 2016-09-27 | 2020-10-23 | 松下知识产权经营株式会社 | Heat exchanger and refrigeration cycle device with same |
| CN109945399A (en) * | 2019-03-20 | 2019-06-28 | 珠海格力电器股份有限公司 | defrosting method and air conditioner |
| CN110513914A (en) * | 2019-08-23 | 2019-11-29 | 青岛海信日立空调系统有限公司 | A kind of heat pump heat distribution system and its control method |
| CN112128838A (en) * | 2020-09-15 | 2020-12-25 | 青岛众链创新技术研究院有限公司 | Frost prevention heat pump system |
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| CN103344040B (en) | 2016-03-30 |
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