CN101660802B - Hot water circulation system associated with heat pump and method for controlling the same - Google Patents
Hot water circulation system associated with heat pump and method for controlling the same Download PDFInfo
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- CN101660802B CN101660802B CN2009100076476A CN200910007647A CN101660802B CN 101660802 B CN101660802 B CN 101660802B CN 2009100076476 A CN2009100076476 A CN 2009100076476A CN 200910007647 A CN200910007647 A CN 200910007647A CN 101660802 B CN101660802 B CN 101660802B
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- hot water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/0095—Devices for preventing damage by freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
- F24D19/1072—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water the system uses a heat pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/123—Compression type heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2501—Bypass valves
Abstract
Disclosed is a hot water circulation system associated with a heat pump and a method for controlling the same. The present invention allows the system to be defrosted while hot water supply or a heating operation is performed, making it possible to improve a phenomenon that heating efficiency is deteriorated.
Description
Technical field
The present invention relates to a kind of hot water supply of and associated with heat pump and the method for heating system and this system of control.
Background technology
With the hot water supply of associated with heat pump and heating equipment be combine with heat pump cycle and hot water circuit unit and carry out water and the cold-producing medium of discharging from compressor between heat exchange to carry out the equipment of hot water supply and floor heating, compressor composition heat pump refrigerating agent loop wherein.
In conventional system; Be used to make pipeline that water flows along the closed cycle that is used for heat supply and be used to make the pipeline that water flows along the closed cycle that is used for hot-water supply to separate, and carry out heat exchange at the diverse location place of the pipeline of the compressor outlet side that is positioned at heat pump refrigerating agent loop respectively.That is to say that in conventional system, the water-refrigerant heat exchanger that is used for heat supply is separated with the water-refrigerant heat exchanger that is used for the hot water supply.
In conventional system, the water of being supplied that is used for the hot water supply carries out heat exchange with cold-producing medium in the water-refrigerant heat exchanger that is used for the hot water supply of flowing through, and is directly discharged then.
Therefore, have said structure, have following problem with the hot water supply and the heating equipment of associated with heat pump.
At first, when producing frosting on the surface of the evaporimeter of forming heat pump refrigerating agent loop thereby needing defrost operation, heat supply function and hot water supply function must stop to finish until defrost operation fully.Therefore, during defrost operation, be unable to supply hot water and indoor temperature and also can descend.If when carrying out defrost operation, also carry out heat supply operation, then heat is delivered to cold-producing medium from water-refrigerant heat exchanger, thereby so the temperature of the recirculated water temperature that causes indoor floor that descends descend.
Secondly, although after defrost operation finishes, carry out hot water supply and heat supply again, heat supplying loop reaches normal level and the hot water supplied reaches design temperature and will spend some times.
Therefore the 3rd, the water-refrigerant heat exchanger that is used for heat supply is what to be separated with the water-refrigerant heat exchanger that is used for the hot water supply, makes installation process complicated and improved manufacturing cost.
Summary of the invention
Therefore, the present invention is directed to a kind of refrigeration machine (refrigerator) of having avoided one or more problems that restriction and shortcoming by prior art cause basically.
The purpose of this invention is to provide a kind of and hot water cyclesystem associated with heat pump, even this system has reduced installation steps and manufacturing cost and during defrost operation, also can carry out the hot water supply reposefully.
Particularly, the purpose of this invention is to provide a kind of method that when normally carrying out the hot water supply, allows to carry out defrost operation and hot water cyclesystem associated with heat pump and control this system.
Other advantage of the present invention, purpose and a characteristic part will be illustrated in the following description, and a part will become clear and definite or can in the middle of practice of the present invention, know through checking hereinafter for those of ordinary skills.Through the structure of in this specification word segment and claim and accompanying drawing, specifically noting, can realize and obtain the object of the invention and other advantage.
In order to realize these purposes and other advantage and according to the embodiment of the present invention; A kind of method that is used to control with the hot water cyclesystem of associated with heat pump is provided; Said and hot water cyclesystem associated with heat pump comprises: outdoor unit, said outdoor unit comprise compressor, outdoor heat converter and bulge and carry out heat pump refrigerating agent circulation; Indoor unit, said indoor unit comprise the water-refrigerant heat exchanger of the heat exchange between the cold-producing medium that carries out water and discharge from said compressor, the header tank that stores the water through said water-refrigerant heat exchanger and the suction water pump from the water of said header tank discharge; And the hot water circuit unit, said hot water circuit unit receives heat to carry out hot water supply or heat supply from the water that said water pump aspirated, and it is characterized in that said method comprises: the water temperature T 2 in the refrigerant temperature T1 of the said outdoor heat converter of sensing and the water pipe; And the duty of side by side or optionally regulating said outdoor unit and indoor unit according to the value of the refrigerant temperature T1 of institute's sensing and water temperature T 2; Wherein, If said water temperature T 2 is lower than design temperature Tb, then controls said system and make the driving of the auxiliary heater be used for heating the water that circulates in said hot water circuit unit optionally, side by side or in order and the output of said water pump reduce.
According to the embodiment of the present invention, provide a kind of and hot water cyclesystem associated with heat pump, comprising: outdoor unit, said outdoor unit comprise compressor, outdoor heat converter and bulge and carry out heat pump refrigerating agent circulation; Indoor unit, said indoor unit comprise the water-refrigerant heat exchanger of the heat exchange between the cold-producing medium that carries out water and discharge from said compressor, the header tank that stores the water through said water-refrigerant heat exchanger and the suction water pump from the water of said header tank discharge; And hot water circuit unit; Said hot water circuit unit receives heat to carry out hot water supply or heat supply from the water that said water pump aspirated; It is characterized in that; Said system comprises by-pass collar, and when the temperature of said outdoor heat converter when carrying out hot water supply or heat supply was lower than the temperature that needs defrosting, the cold-producing medium that said by-pass collar makes a part discharge from said compressor can be bypassed to said outdoor heat converter.
According to another embodiment of the present invention; A kind of method that is used to control with the hot water cyclesystem of associated with heat pump is provided; Said and hot water cyclesystem associated with heat pump comprises: outdoor unit, said outdoor unit comprise compressor, outdoor heat converter and bulge and carry out heat pump refrigerating agent circulation; Indoor unit, said indoor unit comprise the water-refrigerant heat exchanger of the heat exchange between the cold-producing medium that carries out water and discharge from said compressor, the header tank that stores the water through said water-refrigerant heat exchanger and the suction water pump from the water of said header tank discharge; And hot water circuit unit; Said hot water circuit unit receives heat to carry out hot water supply or heat supply from the water that said water pump aspirated; It is characterized in that; When the temperature of said outdoor heat converter when carrying out hot water supply or heat supply is lower than the temperature that needs defrosting, controls said system and make a part keep its driving condition to said outdoor heat converter and said water pump from the refrigerant bypass of said compressor discharge.
According to having above-mentioned structure and hot water cyclesystem associated with heat pump and being used to control the method for this system, can utilize single hot water circuit closed cycle to come optionally to carry out hot water supply and floor heating.
More specifically, be provided with the single water-refrigerant heat exchanger of carrying out heat exchange, make it possible to reduce the installation steps and the manufacturing cost of system through heat pump refrigerating agent circulation.
Even when carrying out defrost operation, also can carry out the hot water supply reposefully.
Description of drawings
The accompanying drawing that is comprised provides further understanding of the present invention and its is combined in this application and formation the application's a part, and these accompanying drawings show embodiment of the present invention and are used for explaining principle of the present invention with specification.In the accompanying drawings:
Fig. 1 illustrates according to diagrammatic sketch first embodiment of the invention and hot water cyclesystem associated with heat pump;
Fig. 2 illustrates the stereogram of forming with the structure of the indoor unit of the hot water cyclesystem of associated with heat pump;
Fig. 3 is the schematic block diagram that illustrates according to the control structure of first embodiment of the invention and hot water cyclesystem associated with heat pump;
Fig. 4 illustrates the flow chart of control according to the method for the defrosting of first embodiment of the invention and hot water cyclesystem associated with heat pump;
Fig. 5 is according to structural map second embodiment of the invention and hot water cyclesystem associated with heat pump.
The specific embodiment
To introduce the preferred implementation of the present invention of example shown in the drawings now in detail.As much as possible, all accompanying drawing will use identical Reference numeral to indicate same or analogous parts.
Below, will illustrative embodiments of the present invention be described in more detail with reference to accompanying drawing.
Fig. 1 illustrates according to diagrammatic sketch first embodiment of the invention and hot water cyclesystem associated with heat pump, and Fig. 2 illustrates the stereogram of forming with the structure of the indoor unit of the hot water cyclesystem of associated with heat pump.
See figures.1.and.2, comprise with the hot water cyclesystem 1 of associated with heat pump: outdoor unit 2, circulate comprising the heat pump refrigerating agent; Indoor unit 3, it adds hot water through carrying out heat exchange with cold-producing medium along heat pump refrigerating agent varying cyclically phase; Hot water feeding unit 4, but its mode with heat exchange is connected with hot-water supply with the part of indoor unit 3; And the heat supply unit, it comprises the water pipe that extends from indoor unit 3.
More specifically, heat pump refrigerating agent circulation comprises: compressor 21, and it will be with the HTHP compressed refrigerant; Cross valve 22, its control is from the flow direction of the cold-producing medium of compressor 21 discharges; Water-refrigerant heat exchanger 31, the heat exchange between its water that carries out flowing through the high-temperature high-pressure refrigerant of cross valve 22 and along the water pipe of indoor unit 3; Bulge 24, it expands the cold-producing medium through water-refrigerant heat exchanger 31 with low-temp low-pressure; And outdoor heat converter 23, it carries out through the cold-producing medium of bulge and the heat exchange between the outdoor air.The attached temperature that the temperature sensor (not shown) is arranged with the tube-surface of sensing outdoor heat converter 23 on outdoor heat converter 23.That is to say, judge whether that according to the temperature value of the pipe of temperature sensor senses needs carry out defrost operation.Thereby these parts connect the formation closed cycle mutually through refrigerant pipe 25.Outdoor unit 2 comprises compressor 21, cross valve 22, bulge 24 and outdoor heat converter 23.When outdoor unit 2 was worked with refrigeration mode, outdoor heat converter 23 was as compressor, and when outdoor unit 2 was worked with heat supply mode, outdoor heat converter 23 was as evaporimeter.Corresponding temperature sensor TH1, TH2 can be installed on the refrigerant pipe of the entrance side of water-refrigerant heat exchanger 31 and outlet side.
Below, will the present invention be described in the following manner, that is, except when outside the situation when under defrost operation, working, hot water cyclesystem 1 is constrained to heat supply mode work with the hot water cyclesystem 1 of associated with heat pump.
More specifically, water-refrigerant heat exchanger 31 is parts of the heat exchange between the cold-producing medium that carries out circulating along the heat pump refrigerating agent and the water that flows along water pipe, and water-refrigerant heat exchanger 31 can adopt heat-exchangers of the plate type.In water-refrigerant heat exchanger 31, heat QH is delivered to the water that flows along water pipe from the high temperature and high pressure gaseous refrigerant through compressor 21.Through hot water supply process or heat supplying process, the water that flow in water-refrigerant heat exchanger 31 is warm.Corresponding temperature sensor TH3, TH4 can be installed on the water pipe of the entrance side of water-refrigerant heat exchanger 31 and outlet side.
When since through the volumetric expansion of water-refrigerant heat exchanger 31 and heated water when surpassing proper level, expansion tank 33 is as the buffer of the water of absorption overexpansion.Include shelf in the expansion tank 33 and move shelf with variation in response to the volume of water.Be filled with nitrogen in the expansion tank 33.
In addition, water pump 36 suction is through extending the water of discharging from the water pipe of header tank 34 outlet sides water is conducted to hot water feeding unit 4 and heat supply unit 5.
In addition, control box 38 is installed, in control box 38, deposited a plurality of electronic components, and the front surface of indoor unit 3 is provided with control panel 37 in indoor unit 3 inner sides.More specifically, control panel 37 can comprise display unit and a plurality of load button such as display panels.The job information of the duty of user's display unit capable of using inspection such as indoor unit 3 or the water temperature through indoor unit 3 and other menu etc.
Hot water feeding unit 4 is heating and supplies the part that the user washed one's face or washed the dishes water.
More specifically, the channel switching valve 71 that is provided with the flow direction of control water in flow direction and water pump 36 isolated a certain positions along water.Channel switching valve 71 can be the triple valve that water that water pump 36 is aspirated flow to hot water feeding unit 4 or heat supply unit 5.Therefore, the hot water supply pipe 48 that extends to the hot water feeding unit and the heating tube 53 that extends to heat supply unit 5 are connected respectively to the outlet side of channel switching valve 71.The water that water pump 36 is aspirated according to the control of channel switching valve 71 optionally flows to any in hot water supply pipe 48 and the heating tube 53.
Hot water feeding unit 4 comprises hot water cassette for supplying 41, the water that storage and heating are supplied from the outside of hot water feeding unit 4 in hot water cassette for supplying 41, and in hot water cassette for supplying 41, be provided with auxiliary heater 42.According to the installation form of hot water feeding unit 4, can further comprise auxiliary thermal source to 41 heat supplies of hot water cassette for supplying.The hot water storage tank 43 that can advise utilizing solar panel is as auxiliary thermal source.Side at hot water feeding unit 4 sets into oral area 411 and export department 412, and cold water flows into inlet portion 411, and hot water is discharged through export department 412.
The part of the hot water supply pipe that more specifically, extends from channel switching valve 71 is inserted into the hot water cassette for supplying 41 and is stored in the water in the hot water cassette for supplying 41 with heating.In other words, heat is delivered to the water that is stored in the hot water cassette for supplying 41 from the high-temperature water along the internal flow of hot water supply pipe 48.Under certain conditions, also can with auxiliary thermal source additional heat be provided through operation auxiliary heater 42.In the time must at short notice water being heated, for example when the user needs a large amount of hot water for shower, can make auxiliary heater 42 and auxiliary thermal source work.The temperature sensor of sensing water temperature can be installed in a side of hot water cassette for supplying 41.
According to embodiment, can be connected to export department 412 such as the hot water device for transferring of shower 45 or such as the household electrical appliance of humidifier 46.The hot water storage tank 43 that utilizes solar panel when employing can be inserted into the auxiliary tube 47 that extends from hot water storage tank 43 inside of hot water cassette for supplying 41 during as auxiliary thermal source.Auxiliary pump 44 and reversal valve VA can be installed, the inner flow velocity of auxiliary pump 44 control auxiliary tube closed cycles, the flow direction of the water in the reversal valve VA control auxiliary tube 47 on auxiliary tube 47.Also can install and measure the temperature sensor TH7 of water temperature at the either side of auxiliary tube 47.
Structure such as the auxiliary thermal source of the hot water storage tank that utilizes solar panel is not limited to above-mentioned embodiment, but can auxiliary thermal source be installed in other position, have multi-form.
Simultaneously, heat supply unit 5 comprises: floor heating unit 51, and it forms through part heating tube 53 is embedded in the indoor floor; And air heat supply unit 52, it is branch in parallel from any position that will be connected to the heating tube 53 on the floor heating unit 51.
More specifically, as shown in Figure 1, the arranged in form that floor heating unit 51 can meander line is under indoor floor.Air heat supply unit 52 can be fan coil units or steam heating pipe.In air heat supply unit 52, be provided with as heat-exchange device from the part of the air heating tube 54 of heating tube 53 branches.Flow on floor heating unit 51 and the air heat supply unit 52 or only flow to floor heating unit 51 and the air heat supply unit 52 on any one along the cold-producing mediums that heating tube 53 flows allowing installing from the position of air heating tube 54 branches such as the channel switching valve 55,56 of triple valve.
The end of the hot water supply pipe 48 that extends from channel switching valve 71 is combined with the port of export spaced positions of air heating tube 54 at the flow direction along water.Therefore, in the heat supply aqueous mode, incorporate into once more in the heating tube 53, flow into then in water-refrigerant heat exchanger 31 along the water that hot water supply pipe 48 flows.
At this, in the position that the needs blocking-up such as hot water supply pipe 48 and heating tube 53 binding sites refluxes check-valves V is installed, reflux so that can prevent sealing.In this, substitute the method for installation channel switching valve 56 on the port of export of the port of export of air heating tube 54 and floor heating unit 51, check-valves can be installed respectively on these ports of export.
Below, with describing flowing of the water that taken place under each mode of operation and hot water cyclesystem associated with heat pump.
In the hot water supplying mode, through flowing of channel switching valve 71 control water so that water flows to hot water supply pipe 48.Therefore, water circulates along the closed cycle B that water-refrigerant heat exchanger 31, header tank 34, water pump 36, passage reversal valve 71 and hot water supply pipe 48 are formed by connecting.In such cyclic process, the cold water that flow in the inlet portion 411 of hot water cassette for supplying 41 is heated, and is discharged into the outside of hot water cassette for supplying 41 then through the export department 412 of hot water cassette for supplying 41, thereby is supplied to the user.
In heat supply mode, through flowing of channel switching valve 71 control water so that water flows to heating tube 53.Therefore, water circulates along the closed cycle A that water-refrigerant heat exchanger 31, header tank 34, water pump 36, passage reversal valve 71 and heating tube 53 are formed by connecting.Therefore, along heating tube 53 flowing water flow on air heat supply unit 52 or floor heating unit 51.
In having the system of above-mentioned structure, if outdoor unit 2 carries out heat pump refrigerating agent circulation for a long time, the surface of outdoor heat converter 23 can be freezed, and makes with the heat exchange of outside air not smooth.Therefore, when the temperature of outdoor heat converter 23 becomes when being lower than design temperature, should remove outdoor heat converter 23 surfaces and go up the ice that form through carrying out defrost operation.
Below, use description to prevent in advance the shallow freezing of outdoor heat converter 23 or remove the control method of the frosting that forms on outdoor heat converter 23 surfaces through the operating rate of control outdoor unit 2 when outdoor unit 2 is with heat supply mode work.
Fig. 3 is the schematic block diagram that illustrates according to the control structure of first embodiment of the invention and hot water cyclesystem associated with heat pump.
With reference to Fig. 3, comprise according to hot water cyclesystem 1 first embodiment of the invention and associated with heat pump: control module 100; Input block 101, it is input to order in the control module 100; Outdoor heat converter temperature sensing unit 102; Water-refrigerant heat exchanger temperature sensing unit 103, the temperature of its water sensing-refrigerant heat exchanger outlet side; Driver, it is operated according to 102,103 sensed temperature values of temperature sensing unit; And memory 105,102,103 a reference values that the sensed temperature value compares of storing therein and sensing cell and drive the required various information of said system.
More specifically, comprise various load buttons on the control panel 37 that is arranged on indoor unit 3 in the input block 101.In outdoor heat converter temperature sensing unit 102, comprise the temperature sensor (not shown) that is attached to outdoor heat converter 23.In water-refrigerant heat exchanger temperature sensing unit 103, comprise the temperature sensor TH3 to TH5 on the water pipe that is installed in indoor unit; And in this embodiment, temperature sensor TH3 to TH5 only limits to be arranged on the temperature sensor TH3 of the outlet side of water-refrigerant heat exchanger 31.Comprise the outdoor fan (not shown), water pump 36, auxiliary heater 35,42 and the outdoor heat converter 23 that are installed on the compressor 21 in the driver 104.
Adopt above-mentioned control structure, outdoor heat converter temperature sensing unit 102 and water-103 sensed temperature values of refrigerant heat exchanger temperature sensing unit are transferred to control module 100.Control module 100 with the temperature value that is transmitted be stored in a reference value in the memory 105 and compare and allow driver 104 to carry out defrost operation according to the result.
Fig. 4 illustrates the flow chart of control according to the method for the defrosting of first embodiment of the invention and hot water cyclesystem associated with heat pump.
With reference to Fig. 4, when system's 1 work, the temperature T 1 of outdoor heat converter temperature sensing unit 102 and water-refrigerant heat exchanger temperature sensing unit 103 sensing refrigerant pipes and the temperature (S10) of the water of the water-refrigerant heat exchanger 31 of flowing through.In control module 100, judge whether the temperature T 1 of refrigerant pipe reduces to the temperature T a that needs defrosting.
When the temperature T 1 of refrigerant pipe drops to the temperature T a that needs defrosting when following, reduce the operating rate (S30) of compressor.And, reduce the speed of outdoor fan and control the aperture of bulge 24, thereby make the temperature of outdoor heat converter 23 raise (S40).Here, bulge 24 can be the electric expansion valve (EEV) that aperture can be controlled, and followingly will describe embodiment of the present invention as the example of bulge with electric expansion valve.
More specifically, if reduce the operating rate of compressor 21 and according to the aperture of the operating rate that reduces control bulge 24, then the temperature of outdoor heat converter 23 inlets raises.In this state, the speed that reduces outdoor fan is with the heat radiation of minimizing to outside air, and alternatively, these heats are used for thawing and are formed on outdoor heat converter 23 lip-deep frostings.
Simultaneously, after the duty of outdoor unit 2 changes, judge whether the temperature T 2 of water-refrigerant heat exchanger 31 is lower than the operation (S50) of design temperature Tb.And, even when the surface that the temperature T 1 of refrigerant pipe remains the temperature T a that is higher than the needs defrosting thereby judges outdoor heat converter 23 does not have frosting or judgement to freeze not proceed to the level that needs defrost operation, still operate S50.
More specifically, in control module 100, judge whether the temperature T 2 of water-refrigerant heat exchanger is lower than design temperature Tb.Wherein, design temperature Tb is the reference temperature value that is used to change the duty of indoor unit 3.For example, when the water temperature of the outlet side of water-refrigerant heat exchanger 23 was lower than design temperature Tb, hot water supply function or heat supply function possibly can't be carried out smoothly.In this case, need optionally make the auxiliary heater 35 that is installed on the header tank 34 or be installed in auxiliary heater 42 work on the hot water cassette for supplying 41, perhaps need control the output of water pump 36.As stated, design temperature Tb can be a fiducial temperature of judging the duty be arranged on fiducial temperature that whether driver 104 on the indoor unit 3 work or control driver 104.
More specifically, when the temperature T 2 of water-refrigerant heat exchanger drops to design temperature Tb when following, auxiliary heater 35,42 work are so that can remain on normal operating conditions (S60) along the temperature of the water of water pipe circulation.Optionally or in auxiliary heater 35,42 work reduce the output of water pump 36, thereby reduce flowing velocity (S60) through the water of water-refrigerant heat exchanger 31.So the flowing velocity of the water through water-refrigerant heat exchanger 31 reduces the time lengthening that makes heat exchange.Therefore, the temperature of the water of the outlet side of water-refrigerant heat exchanger 31 raises.
At this, can be optionally or side by side carry out the driving process of auxiliary heater 35,42 and reduce the process of water pump output.Can also carry out these two processes in order.In the installation process of system 1, can set drive condition by setter, perhaps can drive condition be organized in the program of control module in advance.
In addition, can carry out Multistage Control to auxiliary heater 35,42 according to the water temperature in the water pipe.More specifically, along be classified to increase the magnitude of current that is supplied to auxiliary heater 35,42 according to the water temperature in the water pipe, improve the temperature of heater gradablely.Alternatively, a plurality of heaters are installed on header tank 34 or hot water cassette for supplying 41, making can be according to the quantity of the heater in the water temperature change work.
Simultaneously; When the temperature T 2 of judging water-refrigerant heat exchanger is higher than design temperature Tb; In control module 100; Judge whether that input system ceases and desist order, make the process that repeats according to the temperature T 2 of the temperature T 1 of outdoor heat converter and water-refrigerant heat exchanger is controlled drive operation (S10) cease and desist order hereinafter, until input system.
Adopt the control method of said system, reduce to the temperature that needs defrosting in the surface temperature of outdoor heat converter 23 and carry out defrost operation before, have the effect of keeping hot water supply and heat supply operation continuously.That is to say, need not to carry out independent defrost operation---make working condition such as outdoor unit from the heat supply cyclic transformation to kind of refrigeration cycle, just can obtain defrosting effect.The work of not interrupting hot water cyclesystem just obtains defrosting effect, like this can be to user's hot-water supply and can floor heating be maintained the setting level continuously.
Fig. 5 is according to structural map second embodiment of the invention and hot water cyclesystem associated with heat pump.
With reference to Fig. 5, comprise the structure of indoor unit 2, hot water feeding unit 4 and heat supply unit 5 identical with shown in first embodiment in second embodiment, but outdoor unit 2 be configured with difference.Therefore, the structure outside the outdoor unit 2 will no longer repeat.
More specifically, with the outdoor unit 2 of the hot water cyclesystem 1 of associated with heat pump in comprise compressor 21, cross valve 22, outdoor heat converter 23 and bulge structure identical with shown in Fig. 1.The something in common of the structure of outdoor unit 2 also is, mounting temperature sensor on outdoor heat converter 23.In addition, in this embodiment, the discharge side of compressor 21 by-passing valve 26 is installed in case the refrigerant bypass that when needing defrost operation, allows a part is discharged from compressor 21 to the entrance side of outdoor heat converter 23.
More specifically, bypass pipe 27 is connected to the entrance side of outdoor heat converter 23 from by-passing valve 26 extensions.The either side of bypass pipe 27 is provided with decompressor 28 so that the pressure of the cold-producing medium of bypass can be reduced to the pressure of outdoor heat converter 23 entrance sides.
In addition, in outdoor heat converter 23 outsides induction heater 60 can be installed, induction heater 60 utilizes the induced-current that is produced by magnetic field to produce heat.
More specifically, induction heater 60 comprises coil 62, and electric current flows in coil 62 producing magnetic field, and in order to insulate, and at the upside of coil ceramic wafer 61 is set.
In general, induction heater 60 is to utilize the induced-current that produced by the magnetic field heater as thermal source, and induction heater 60 comprises the electromagnet that can be connected with high-frequency alternating current.Electromagnet forms coil 62 and is wrapped in the shape on the conductor.
Hereinafter, with the heating function of describing induction heater 60.
If alternating current through coil 62, then forms the time dependent alternating magnetic field of direction on coil 62.So alternation magnetic force is applied on the conductor that is wound with coil 62, and then because electromagnetic induction phenomenon produces vortex current (vortex flow).The Joule heat heating clamber outer heat-exchanger 23 that vortex current produces.More specifically, if cross high frequency electric at coil 62 upper reaches under the state when being installed in outdoor heat converter 23 outsides when induction heater 60, then the magnetic line of force 122 passes ceramic wafer 61 and outdoor heat converter 23.So, on outdoor heat converter 23, produce induced-current and then produce predetermined amount.Therefore, be formed on outdoor heat converter 23 lip-deep frosting or ice-outs.
Induction heater 60 be through the heater of induced-current heat supply and low hear rate and efficient aspect be favourable.
For example, air-conditioning can utilize induction heater 60 to defrost before for-8 ℃ in the temperature of evaporimeter.Be appreciated that such defrosting ability is apparently higher than only being-1 ℃ of conventional defrosting that carries out defrost operation before in the temperature of evaporimeter.
According in second embodiment and hot water cyclesystem associated with heat pump, the temperature of outdoor heat converter 23 drop to be lower than the temperature that needs defrosting before with the refrigerant bypass of a part through compressor 21 to outdoor heat converter 23.That is to say, drop to the temperature that is lower than the needs defrosting at outdoor heat converter 23 and before a part of high temperature refrigerant is fed to outdoor heat converter 23, thereby block demand in advance defrost operation.
In other words,, do not carry out defrost operation, but make a part from the cold-producing medium inflow evaporator 23 of the HTHP of compressor 21 discharges if the temperature of outdoor heat converter 23 drops to the temperature that needs defrosting.So, improved the surface temperature of evaporimeter 23, make to be formed on this lip-deep ice-out.
More specifically, by-passing valve 26 work are so that the cold-producing medium that a part is discharged from compressor 21 can flow to bypass pipe 27.Then, be reduced to the pressure of the entrance side of outdoor heat converter 23 through decompressor and its pressure along the cold-producing medium of bypass pipe 27 shuntings.In the cold-producing medium inflow outdoor heat exchanger of being shunted 23, make the temperature of outdoor heat converter 23 raise.Therefore, the steam that on the surface of outdoor heat converter 23, freezes melts.
At this, although by-passing valve 26 work carrying out defrost operation, water pump 36 still continuous operation so that hot water can circulate.Therefore, even when carrying out defrost operation, still carry out hot water supply and heat supply reposefully.Can be according to the aperture of freezing extent control by-passing valve 26 of outdoor heat converter 23.
Simultaneously, be not only the work that relies on by-passing valve 26, that is to say, be not only the aperture that relies on control by-passing valve 26, the defrosting that fully carries out outdoor heat converter 23 can make induction heater work.In other words, can carry out simultaneously by means of the defrost operation of refrigerant bypass with by means of the defrost operation of induction heater 60.Alternatively, can before refrigerant bypass, drive induction heater, and can optionally carry out refrigerant bypass according to defrosting effect.
Equally, if a part is passed through the refrigerant bypass of compressor 21 to outdoor heat converter 23, can reduce the heat exchange amount that is undertaken by water-refrigerant heat exchanger 31.In this case, the output of control water pump 36.In other words, the flowing velocity of water reduces in the water pipe if make through the output that reduces water pump 36, and the speed of the water of the water-refrigerant heat exchanger of then flowing through 31 reduces, and makes it possible to compensate heat exchange amount.This with describe in the first embodiment identical.
Adopt above-mentioned structure, can not produce the phenomenon that in the water-refrigerant pipe that will be cooled 31, is pulled away along the heat of the water of indoor unit 3, hot water feeding unit 4 or 5 circulations of heat supply unit.In other words, can under the situation of not carrying out defrost operation, obtain defrosting effect, and can not need stop the work of hot water circuit.Therefore, can be to user's hot-water supply and can constantly keep floor heating continuously.
Can make multiple modification and remodeling to the present invention to it will be evident to one of ordinary skill in the art that, and not deviate from the spirit and scope of the present invention.Therefore, this invention is intended to cover in the scope of accompanying claims and equivalent thereof to modification of the present invention and remodeling.
Claims (17)
1. method that is used to control with the hot water cyclesystem of associated with heat pump saidly comprises with hot water cyclesystem associated with heat pump:
Outdoor unit, said outdoor unit comprise compressor, outdoor heat converter and bulge and carry out heat pump refrigerating agent circulation;
Indoor unit, said indoor unit comprise the water-refrigerant heat exchanger of the heat exchange between the cold-producing medium that carries out water and discharge from said compressor, the header tank that stores the water through said water-refrigerant heat exchanger and the suction water pump from the water of said header tank discharge; And
The hot water circuit unit, said hot water circuit unit receives heat carrying out hot water supply or heat supply from water that said water pump aspirated,
It is characterized in that said method comprises:
Water temperature (T2) in refrigerant temperature of the said outdoor heat converter of sensing (T1) and the water pipe; And
The working condition of side by side or optionally regulating said outdoor unit and indoor unit according to the value of the refrigerant temperature (T1) of institute's sensing and water temperature (T2),
Wherein, if said water temperature T 2 is lower than design temperature Tb, then controls said system and make the driving of the auxiliary heater be used for heating the water that circulates in said hot water circuit unit optionally, side by side or in order and the output of said water pump reduce.
2., then control said system and make the operating rate of said compressor reduce if the method for claim 1, wherein said refrigerant temperature (T1) is lower than the temperature T a that needs defrosting.
3. like the said method of claim 2, wherein, control the feasible temperature that improves said outdoor heat converter through the aperture of regulating said bulge together with the operating rate that reduces said compressor of said system.
4. method as claimed in claim 3 wherein, is controlled said system and is made the speed that reduces to be arranged on the fan on the sidepiece of said outdoor heat converter together with the aperture of the said bulge of control or the aperture ground that is independent of the said bulge of control.
5. the method for claim 1, wherein can control said auxiliary heater with multistage mode.
6. the method for claim 1, wherein a plurality of said auxiliary heaters are set, and regulate the quantity of the auxiliary heater in the work of being in according to said water temperature.
7. the temperature that the method for claim 1, wherein said water temperature T 2 is outlet sides of said water-refrigerant heat exchanger.
8. hot water cyclesystem with associated with heat pump comprises:
Outdoor unit, said outdoor unit comprise compressor, outdoor heat converter and bulge and carry out heat pump refrigerating agent circulation;
Indoor unit, said indoor unit comprise the water-refrigerant heat exchanger of the heat exchange between the cold-producing medium that carries out water and discharge from said compressor, the header tank that stores the water through said water-refrigerant heat exchanger and the suction water pump from the water of said header tank discharge; And
The hot water circuit unit, said hot water circuit unit receives heat carrying out hot water supply or heat supply from the water of said water pump suction,
It is characterized in that; Said system comprises by-pass collar; When the temperature of said outdoor heat converter when carrying out hot water supply or heat supply was lower than the temperature that needs defrosting, the cold-producing medium that said by-pass collar makes a part discharge from said compressor can be bypassed to said outdoor heat converter.
9. hot water cyclesystem as claimed in claim 8, wherein, said by-pass collar comprises:
Bypass pipe, said bypass pipe are from the outlet side branch of said compressor and be connected to the entrance side of said outdoor heat converter;
By-passing valve, said by-passing valve is arranged on the entrance side of said bypass pipe;
Decompressor, said decompressor is arranged on the precalculated position of said bypass pipe.
10. hot water cyclesystem as claimed in claim 8 also comprises:
Induction heater, said induction heater are arranged on the outside of said outdoor heat converter to produce the heat of defrosting.
11. hot water cyclesystem as claimed in claim 10, wherein, said induction heater and said by-pass collar are worked independently or interrelatedly.
12. a method that is used to control with the hot water cyclesystem of associated with heat pump saidly comprises with hot water cyclesystem associated with heat pump:
Outdoor unit, said outdoor unit comprise compressor, outdoor heat converter and bulge and carry out heat pump refrigerating agent circulation;
Indoor unit, said indoor unit comprise the water-refrigerant heat exchanger of the heat exchange between the cold-producing medium that carries out water and discharge from said compressor, the header tank that stores the water through said water-refrigerant heat exchanger and the suction water pump from the water of said header tank discharge; And
The hot water circuit unit, said hot water circuit unit receives heat carrying out hot water supply or heat supply from water that said water pump aspirated,
It is characterized in that; When the temperature of said outdoor heat converter when carrying out hot water supply or heat supply is lower than the temperature that needs defrosting, controls said system and make a part keep its driving condition to said outdoor heat converter and said water pump from the refrigerant bypass of said compressor discharge.
13. method as claimed in claim 12 wherein, if the temperature of said outdoor heat converter drops to below the temperature that needs defrosting, then drives the induction heater in the outside that is arranged on said outdoor heat converter.
14. method as claimed in claim 13, wherein, any process in the process of carrying out the bypass part of refrigerant and the process that drives said induction heater or carry out this two processes.
15. method as claimed in claim 13, wherein,
Side by side or in order carry out the process and the process that drives said induction heater of bypass part of refrigerant.
16. method as claimed in claim 12 wherein, is controlled the aperture of the by-passing valve of the discharge side that is arranged on said compressor according to the degree of freezing of said outdoor heat converter.
17. method as claimed in claim 12 wherein, when the temperature of the water that flows along water pipe descends, reduces the output of said water pump.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2008-0083312 | 2008-08-26 | ||
| KR1020080083313 | 2008-08-26 | ||
| KR1020080083312A KR101254367B1 (en) | 2008-08-26 | 2008-08-26 | Hot water circulation system associated with heat pump and method for controlling the same |
| KR1020080083312 | 2008-08-26 | ||
| KR10-2008-0083313 | 2008-08-26 | ||
| KR1020080083313A KR101298323B1 (en) | 2008-08-26 | 2008-08-26 | Method for controlling hot water circulation system associated with heat pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101660802A CN101660802A (en) | 2010-03-03 |
| CN101660802B true CN101660802B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100076476A Expired - Fee Related CN101660802B (en) | 2008-08-26 | 2009-02-16 | Hot water circulation system associated with heat pump and method for controlling the same |
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| Country | Link |
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| KR (1) | KR101254367B1 (en) |
| CN (1) | CN101660802B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101139760B1 (en) * | 2011-06-29 | 2012-04-26 | 안동철 | An air conditioning system with prevent the overheat of compressor |
| JP5464247B1 (en) * | 2012-09-26 | 2014-04-09 | ダイキン工業株式会社 | Control device |
| CN104061716B (en) * | 2014-07-09 | 2016-08-03 | 陈新波 | A kind of Multifunctional hot water system for air conditioner with auxiliary thermal source |
| US9945587B2 (en) * | 2014-09-02 | 2018-04-17 | Rheem Manufacturing Company | Apparatus and method for hybrid water heating and air cooling and control thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1366161A (en) * | 2002-02-10 | 2002-08-28 | 大连冰山集团有限公司 | Hot water system for 2-stage water circulation and driven by heat pump for heating and air conditioning |
| CN1403746A (en) * | 2001-09-04 | 2003-03-19 | 三洋电机株式会社 | Heat pump type hot water supply device |
| CN1542355A (en) * | 2003-04-30 | 2004-11-03 | 乐金电子(天津)电器有限公司 | Apparatus for controlling operation of outdoor unit and its method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100762513B1 (en) * | 2006-05-26 | 2007-10-02 | 주식회사 대우일렉트로닉스 | Defrost apparatus of heat pump air conditioner |
| JP2008020107A (en) * | 2006-07-12 | 2008-01-31 | Matsushita Electric Ind Co Ltd | Bathroom air conditioner |
| JP2008121923A (en) * | 2006-11-09 | 2008-05-29 | Denso Corp | Heat pump water heater |
| JP5082536B2 (en) * | 2007-03-28 | 2012-11-28 | パナソニック株式会社 | Heat pump water heater |
-
2008
- 2008-08-26 KR KR1020080083312A patent/KR101254367B1/en active IP Right Grant
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403746A (en) * | 2001-09-04 | 2003-03-19 | 三洋电机株式会社 | Heat pump type hot water supply device |
| CN1366161A (en) * | 2002-02-10 | 2002-08-28 | 大连冰山集团有限公司 | Hot water system for 2-stage water circulation and driven by heat pump for heating and air conditioning |
| CN1542355A (en) * | 2003-04-30 | 2004-11-03 | 乐金电子(天津)电器有限公司 | Apparatus for controlling operation of outdoor unit and its method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20100024645A (en) | 2010-03-08 |
| KR101254367B1 (en) | 2013-04-12 |
| CN101660802A (en) | 2010-03-03 |
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