CN202869073U - Water source heating, air conditioning and water heating machine - Google Patents
Water source heating, air conditioning and water heating machine Download PDFInfo
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- CN202869073U CN202869073U CN 201220265085 CN201220265085U CN202869073U CN 202869073 U CN202869073 U CN 202869073U CN 201220265085 CN201220265085 CN 201220265085 CN 201220265085 U CN201220265085 U CN 201220265085U CN 202869073 U CN202869073 U CN 202869073U
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Abstract
The utility model discloses a water source heating, air conditioning and water heating machine. According to the utility model, a manner of combining two refrigerant electromagnetic valves and a refrigerant one-way valve is adopted to solve the problem that six to eight refrigerant electromagnetic valves are adopted in the prior art of the air source three-purpose machine so as to avoid the potential hazard that the heat pump cycle is gradually lack of fluorine due to the continuously accumulated refrigerant liquid of a heat exchanger being switched; the circulation of refrigerant between a switched heat exchanger and a heat pump cycle is fundamentally avoided; and the water source heating, air conditioning and water heating machine which is capable of long term self-stabilization running is formed. Therefore, the four functions of heating, air-conditioning, water heating, and air-conditioning plus water heating is realized in a manner that the structure is simpler, the cost is lower, the operation is more reliable, and the efficiency is improved.
Description
(1) technical field
The present invention relates to a kind of water source heating air conditioner water heating machine.
(2) background technology
The Chinese invention patent " warming, air conditioning+hot water machine " of the power that obtains (obtains the power patent No.: ZL200410038964.1), by 3 heat exchangers and 2 heat pump circuit that magnetic valve consists of, realize heating, air conditioning, and water heating functions three function synthesized utilizations; 20 years of operation initial cost+running cost reduces by 20～45% than prior art.Yet there are following serious problems in this system in actual motion:
In 3 heat exchangers of heat pump; 2 air-side heat exchangers that are connected in parallel and hot water heat exchanger only come practical function to switch by 2 cooling medium liquid way solenoid valves; the gas circuit of its refrigerant then communicates fully; thereby when multi-functional switching running and heat pump shutdown; all crossfire and the accumulation of uncontrollable refrigerant between 2 heat exchangers in parallel; so that when lacking refrigerant during the heat pump circuit of operation and refrigerant excessive, cause its irregular operation even protection.For example: air-side heat exchanger is because the cavity volume of its refrigerant is larger; if sealed by magnetic valve when the liquid road of its refrigerant after therefore function is switched; then with another hot water heat exchanger during as the condenser parallel running; then compressor air-discharging will constantly charge to it; and when environment temperature is low, will cause wherein constantly having condensate accumulation, thereby must make operating heat pump cycle lack gradually fluorine; can't realize its stable operation, even system protection occur.And the patented technology of existing air-source three-way set generally needs 6 to 8 refrigerant magnetic valves could solve to be switched heat exchanger constantly to accumulate the gradually hidden danger of scarce fluorine of heat pump cycle that cooling medium liquid causes.
(3) summary of the invention
The objective of the invention is to want the advantage of integrated heating/air-conditioning+hot water machine, improve its weak point, provide a kind of refrigerant of fundamentally avoiding to circulate being switched between heat exchanger and the heat pump cycle, can realize the water source heating air conditioner water heating machine of long-term self-stabilization operation.
The technical solution used in the present invention, namely the water source heating air conditioner water heating machine as shown in Figure 1, wherein: the 1-compressor; The 2-high-voltage switch gear; The 3-four-way change-over valve; 4.2-refrigerant bidirectional electromagnetic valve; 4.3-refrigerant three-way magnetic valve; The 5-coolant solo valve; 6-water source side evaporator/condensers; The 7-high-pressure reservoir; The 8-device for drying and filtering; The 9-expansion valve; 10-uses the side evaporator/condensers; The 11-gas-liquid separator; The 12-low tension switch; 13-hot water condenser; The 14-air bleeding valve; The threeway of 15-function; 16-triple valve group; The 17-circulating pump; The 18-non-return valve; The 19-warming, air conditioning is terminal; The 20-filter; 21-import threeway; The 22-hot water circulating pump; 23-exports threeway; The 24-boiler; 25-moisturizing threeway; 26-draining safety valve; The 27-water pump; The 28-waterway electromagnetic valve.
According to the water source heating air conditioner water heating machine shown in the accompanying drawing 1: its coolant solo valve 5 and middle high-pressure reservoir 7 that is connected in series, device for drying and filtering 8, expansion valve 9 by compressor 1, high-voltage switch gear 2, four-way change-over valve 3, refrigerant three-way magnetic valve 4.3, water source side evaporator/condensers 6 medium sides, refrigerant bidirectional electromagnetic valve 4.2, threeway, 4 bridge layouts, use side evaporator/condensers 10 medium sides, four-way change-over valve 3, gas-liquid separator 11, low tension switch 12, compressor 1, form the water resource heat pump loop;
Then coolant solo valve 5 of hot water condenser 13 medium side liquid interface tubes series connection is in parallel by refrigerant three-way magnetic valve 4.3 and threeway medium side with water source side evaporator/condensers 6, with formation heat-pump hot-water branch road;
Use side evaporator/condensers 10 refrigerating medium side outlets to be connected in series air bleeding valve 14, function threeway 15 by pipeline, its import is connected in series triple valve group 16, circulating pump 17, non-return valve 18 by pipeline, to form the cold/heat supply handoff leg;
Function threeway 15 connects warming, air conditioning end 19, filter 20, triple valve group 16 by pipeline, forms terminal 19 branch roads of warming, air conditioning;
Import threeway 21 connects hot water circulating pump 22, non-return valve 18, hot water condenser 13 hot water sides, air bleeding valve 14, outlet threeway 23 by pipeline, forms the hot water branch road;
Function threeway 15 forms boiler 24 hot water branch roads by pipeline connection outlet threeway 23, boiler 24, moisturizing threeway 25, filter 20, import threeway 21, triple valve group 16;
Upper hose forms moisturizing, level pressure branch road by filter 20, low tension switch 12, non-return valve 18, draining safety valve 26;
Water source side evaporator/condensers 6 is set up it and is driven water pump 27;
The hot water fairlead of boiler 24 arranges waterway electromagnetic valve 28, and by low tension switch 12 controls that arrange on moisturizing, the level pressure branch road.
Refrigerant three-way magnetic valve 4.3 be 1 refrigerant three-way magnetic valve 4.3 as shown in Figure 1, or be connected with 1 refrigerant Unidirectional solenoid valve 4.1 and 1 threeway by 1 refrigerant bidirectional electromagnetic valve 4.2 and form as shown in Figure 2.
Refrigerant bidirectional electromagnetic valve 4.2 be 1 refrigerant bidirectional electromagnetic valve 4.2 as shown in Figures 1 and 2, or connected to form as shown in Figure 3 by 1 refrigerant Unidirectional solenoid valve 4.1 and 1 coolant solo valve 5 and 2 threeway reverse parallel connections.
Expansion valve 9 is a kind of in electric expansion valve, heating power expansion valve, capillary, the restricting orifice, or mutual series, parallel structure therebetween.
Triple valve group 16 is 1 triple valve, or is connected by 2 two-port valves and 1 threeway and forms.
Using side evaporator/condensers 10 and hot water condenser 13 is a kind of in shell and tube exchanger, plate type heat exchanger, plate-fin heat exchanger, double pipe heat exchanger, the coil exchanger.
Operation principle of the present invention 3 is described as follows by reference to the accompanying drawings:
1, air conditioning function: compressor 1 starts, to drive the refrigerant high-voltage switch gear 2 of flowing through, four-way change-over valve 3, threeway, threeway, refrigerant Unidirectional solenoid valve 4.1, threeway, water source side evaporator/condensers 6 medium sides, threeway, coolant solo valve 5, threeway, threeway, threeway, coolant solo valve 5, threeway, high-pressure reservoir 7, device for drying and filtering 8, expansion valve 9, threeway, coolant solo valve 5, threeway, use side evaporator/condensers 10 medium sides, four-way change-over valve 3, gas-liquid separator 11, low tension switch 12, compressor 1, consist of kind of refrigeration cycle, with using the low level room air heat energy pump that extracts in the side evaporator/condensers 10 to water source side evaporator/condensers 6, discharge to environmental water systems by its water pump 27 drivings.Circulating pump 17 starts in advance, with drive refrigerating medium flow through non-return valve 18, use side evaporator/condensers 10 refrigerating medium sides, air bleeding valve 14, function threeway 15, warming, air conditioning end 19, filter 20, triple valve group 16, circulating pump 17, consist of Air-conditioning Cycle, so that the evaporation colds in the use side evaporator/condensers 10 are flowed to terminal 19 systems of warming, air conditioning.
2, heating function: compressor 1 starts, with drive refrigerant flow through high-voltage switch gear 2, four-way change-over valve 3, use side evaporator/condensers 10 medium sides, threeway, coolant solo valve 5, threeway, high-pressure reservoir 7, device for drying and filtering 8, expansion valve 9, threeway, coolant solo valve 5, threeway, threeway, threeway, refrigerant Unidirectional solenoid valve 4.1, threeway, water source side evaporator/condensers 6 medium sides, threeway, coolant solo valve 5, threeway, threeway, four-way change-over valve 3, gas-liquid separator 11, low tension switch 12, compressor 1, consist of heat pump cycle; With the low level water source heat energy pump that gathers in the water source side evaporator/condensers 6 to using in the side evaporator/condensers 10.Circulating pump 17 starts in advance, with drive refrigerating medium flow through non-return valve 18, use side evaporator/condensers 10 refrigerating medium sides, air bleeding valve 14, function threeway 15, warming, air conditioning end 19, filter 20, triple valve group 16, circulating pump 17, consist of the heating circulation, so that the high-order condensation heat releases in the use side evaporator/condensers 10 are flowed to terminal 19 systems of warming, air conditioning.
3, hot water function: compressor 1 starts, with drive refrigerant flow through high-voltage switch gear 2, four-way change-over valve 3, use side evaporator/condensers 10 medium sides, threeway, coolant solo valve 5, threeway, high-pressure reservoir 7, device for drying and filtering 8, expansion valve 9, threeway, coolant solo valve 5, threeway, threeway, threeway, refrigerant Unidirectional solenoid valve 4.1, threeway, water source side evaporator/condensers 6 medium sides, threeway, coolant solo valve 5, threeway, threeway, four-way change-over valve 3, gas-liquid separator 11, low tension switch 12, compressor 1, consist of heat pump cycle; With the low level water source heat energy pump that gathers in the water source side evaporator/condensers 6 to using in the side evaporator/condensers 10.Circulating pump 17 starts in advance, with drive refrigerating medium flow through non-return valve 18, use side evaporator/condensers 10 refrigerating medium sides, air bleeding valve 14, function threeway 15, outlet threeway 23, boiler 24, moisturizing threeway 25, filter 20, import threeway 21, triple valve group 16, circulating pump 17, consist of hot water circuit, so that the high-order condensation heat releases in the use side evaporator/condensers 10 are flowed to boiler 24.
4, air-conditioning+hot water function: compressor 1 starts, to drive the refrigerant high-voltage switch gear 2 of flowing through, four-way change-over valve 3, threeway, refrigerant Unidirectional solenoid valve 4.1, hot water condenser 13 medium sides, coolant solo valve 5, threeway, threeway, coolant solo valve 5, threeway, high-pressure reservoir 7, device for drying and filtering 8, expansion valve 9, threeway, coolant solo valve 5, threeway, use side evaporator/condensers 10 medium sides, four-way change-over valve 3, gas-liquid separator 11, low tension switch 12, compressor 1, consist of kind of refrigeration cycle, with using the low level room air heat energy pump that extracts in the side evaporator/condensers 10 to hot water condenser 13, discharge to circulating hot water by the hot water circulating pump driving.
Circulating pump 17 starts in advance, with drive refrigerating medium flow through non-return valve 18, use side evaporator/condensers 10 refrigerating medium sides, air bleeding valve 14, function threeway 15, warming, air conditioning end 19, filter 20, triple valve group 16, circulating pump 17, consist of Air-conditioning Cycle, so that the evaporation colds in the use side evaporator/condensers 10 are flowed to terminal 19 systems of warming, air conditioning.Hot water circulating pump 22 starts in advance, to drive flow of hot water through non-return valve 18, hot water condenser 13 hot water sides, air bleeding valve 14, outlet threeway 23, boiler 24, moisturizing threeway 25, filter 20, import threeway 21, hot water circulating pump 22, consist of hot water circuit, so that the high-order condensation heat release in the hot water condenser 13 is flowed to boiler 24.
Compared with prior art, design feature of the present invention is as follows:
1, when heating and hot water function: the coolant solo valve 5 of hot water condenser 13 medium side liquid pipes stops liquid refrigerants to flow to it, the refrigerant Unidirectional solenoid valve 4.1 of its medium side tracheae is closed simultaneously, to avoid the suction of refrigerant in 1 pair of hot water condenser 13 of compressor, therefore just can guarantee that hot water condenser 13 and operating heat pump cycle are independent of each other, thereby guarantee to realize stable heating and hot water function;
2, during air conditioning function: the coolant solo valve 5 of hot water condenser 13 medium side liquid pipes stops liquid refrigerants to flow to it, the refrigerant Unidirectional solenoid valve 4.1 of its medium side tracheae is closed simultaneously, flow to it with the exhaust of avoiding compressor 1, therefore just can guarantee that hot water condenser 13 and operating kind of refrigeration cycle are independent of each other, thereby guarantee to realize stable air conditioning function;
3, during air-conditioning+hot water function: closed condition refrigerant Unidirectional solenoid valve 4.1 in parallel in the water source side evaporator/condensers 6 medium side liquid pipes flows to it with the coolant solo valve 5 common liquid refrigerants that stop, closed condition refrigerant Unidirectional solenoid valve 4.1 in parallel flows to it with the exhaust of coolant solo valve 5 common prevention compressors 1 in its medium side tracheae simultaneously, therefore just can guarantee that water source side evaporator/condensers 6 and operating kind of refrigeration cycle are independent of each other, thereby guarantee to realize stable air-conditioning+hot water function.
Therefore compared with prior art, technical advantage of the present invention is as follows:
The present invention only adopts 2 refrigerant magnetic valves and coolant solo valve combination, solve the heat exchanger that is switched that needs 6 to 8 refrigerant magnetic valves to solve in the existing water source three-way set technology and constantly accumulate the hidden danger that heat pump cycle that cooling medium liquid causes lacks fluorine gradually, fundamentally avoid refrigerant in the circulation that is switched between heat exchanger and the heat pump cycle, make up the water source heating air conditioner water heating machine that to realize long-term self-stabilization operation, thereby simpler with structure, cost is cheaper, move more reliable, the mode that efficient more improves realizes heating, air-conditioning, hot water, 4 kinds of functions such as air-conditioning+hot water.
(4) description of drawings
Accompanying drawing 1 carries out the system flow chart of function control for the present invention adopts refrigerant three-way magnetic valve 4.3 and refrigerant bidirectional electromagnetic valve 4.2.
Accompanying drawing 2 carries out the system flow chart of function control for the present invention adopts refrigerant bidirectional electromagnetic valve 4.2 and refrigerant Unidirectional solenoid valve 4.1.
Accompanying drawing 3 carries out the system flow chart of function control for the present invention adopts refrigerant Unidirectional solenoid valve 4.1 and coolant solo valve 5.
(5) specific embodiment
The embodiment of the water source heating air conditioner water heating machine that the present invention proposes now is described as follows as shown in Figure 3: it connects high-voltage switch gear 2, four-way change-over valve 3, threeway, refrigerant Unidirectional solenoid valve 4.1 in parallel and coolant solo valve 5 (direction of two valve opposite directions and refrigerant Unidirectional solenoid valve 4.1 is pointed to water source side evaporator/condensers 6), heat exchange area 1.5m by the vortex compressor 1 of electrical power 4.0kW in turn by diameter 20mm copper pipe
2The board-like water source of copper brazing side evaporator/condensers 6 medium sides in the diameter 20mm import of R22, its diameter 10mm outlet connects coolant solo valve 5 and middle 3 the raising and press reservoirs 7, device for drying and filtering 8, electric expansion valve 9, heat exchange area 1.5m of being connected in series thereof of the refrigerant Unidirectional solenoid valve 4.1 of parallel connection of same diameter interface and coolant solo valve 5 (direction of two valve opposite directions and refrigerant Unidirectional solenoid valve 4.1 is pointed to water source side evaporator/condensers 6), threeway, 4 bridge layouts more in turn by copper pipe
2The board-like use side of copper brazing evaporator/condensers 10R22 side diameter 10mm import, its diameter 20mm outlet connects four-way change-over valve 3, gas-liquid separator 11, low tension switch 12, the compressor 1 of same diameter interface more in turn by copper pipe, form the air-water heat pump circuit; Heat exchange area 1.5m
2Coolant solo valve 5 (its direction deviate from hot water condenser 13) and R22 side diameter 20mm copper air pipe interface refrigerant Unidirectional solenoid valve 4.1 (its direction point to hot water condenser 13) and the threeway by same diameter interface thereof of the board-like hot water condenser of copper brazing 13R22 side diameter 10mm copper liquid interface tube by the same diameter interface, be in parallel with the control branch road of water source side evaporator/condensers 6 medium sides, to form the water-water heat pump branch road; Use side evaporator/condensers 10 refrigerating medium side outlets to be connected in series air bleeding valve 14, function threeway 15 by diameter 24mm outlet steel pipe, its import is connected in series electric three passes ball valve 16, flow 2m by diameter 24mm steel pipe
3/ h, lift 14mH
2The circulating pump 17 of O, non-return valve 18 are to form the cold/heat supply handoff leg; Function threeway 15 forms terminal 19 branch roads of warming, air conditioning by diameter 24mm steel pipe be connected in parallel fan coil 19, filter 20, the electric three passes ball valve 16 of 5 complete hot cold 3.7kW/ heating load 6.3kW; Import threeway 21 is by diameter 24mm steel pipe connection traffic 2m
3/ h, lift 14mH
2The hot water circulating pump 22 of O, non-return valve 18, hot water condenser 13 hot water sides, air bleeding valve 14, outlet threeway 23 form the hot water branch road; Function threeway 15 is made/boiler 24 of the long 800mm of diameter 300mm/, moisturizing threeway 25, filter 20, import threeway 21, electric three passes ball valve 16 by 23,1 thick 1.2mm corrosion resistant plate of diameter 24mm steel pipe connecting exit threeway, forms boiler 24 hot water branch roads; The upper water steel pipe of diameter 15mm forms moisturizing, level pressure branch road by filter 20, low tension switch 12, non-return valve 18, draining safety valve 26.Water source side evaporator/condensers 6 is set up its flow 2m
3The driving water pump 27 of/h, electrical power 160W.The diameter 15mm hot water fairlead of boiler 24 arranges diameter 15mm, stainless steel water way solenoid valve 28, and by diameter 15mm low tension switch 12 controls that arrange on diameter 15mm moisturizing, the level pressure branch road.
The embodiment of the invention during periodical feeding temperature 45 C, can realize that heating/hot water heats power 14.3kW under the hydrologic condition of 18 ℃ of water source temperature, total input electric power 4.40kW, heat pump heat supply coefficient 3.25 is apart from unit 1m place operation noise 59dB, operating weight 145kg; In circulation during for 7 ℃ of cold water temperatures, during 45 ℃ of circulation heating coolant-temperature gages, can realize air conditioner refrigerating power 12.45kW simultaneously, hot water heats power 16.20kW, total input electric power 4.06kW, the air-conditioning of this moment+hot-water combined supplying coefficient 7.06.
Claims (6)
1. water source heating air conditioner water heating machine, it is by compressor (1); High-voltage switch gear (2); Four-way change-over valve (3); Refrigerant bidirectional electromagnetic valve (4.2); Refrigerant three-way magnetic valve (4.3); Coolant solo valve (5); Water source side evaporator/condensers (6); High-pressure reservoir (7); Device for drying and filtering (8); Expansion valve (9); Use side evaporator/condensers (10); Gas-liquid separator (11); Low tension switch (12); Hot water condenser (13); Air bleeding valve (14); Function threeway (15); Triple valve group (16); Circulating pump (17); Non-return valve (18); Warming, air conditioning terminal (19); Filter (20); Import threeway (21); Hot water circulating pump (22); Outlet threeway (23); Boiler (24); Moisturizing threeway (25); Draining safety valve (26); Water pump (27); Waterway electromagnetic valve (28) forms; It is characterized in that: compressor (1), high-voltage switch gear (2), four-way change-over valve (3), refrigerant three-way magnetic valve (4.3), water source side evaporator/condensers (6) medium side, refrigerant bidirectional electromagnetic valve (4.2), threeway, the coolant solo valve of 4 bridge layouts (5) and the middle high-pressure reservoir (7) that is connected in series thereof, device for drying and filtering (8), expansion valve (9), use side evaporator/condensers (10) medium side, four-way change-over valve (3), gas-liquid separator (11), low tension switch (12), compressor (1) forms the water resource heat pump loop; Hot water condenser (a 13) medium side liquid interface tube series connection coolant solo valve (5), then the medium side by refrigerant three-way magnetic valve (4.3) and threeway and water source side evaporator/condensers (6) is in parallel, to form the heat-pump hot-water branch road; Use side evaporator/condensers (10) refrigerating medium side outlet to be connected in series air bleeding valve (14), function threeway (15) by pipeline, its import is connected in series triple valve group (16), circulating pump (17), non-return valve (18) by pipeline, to form the cold/heat supply handoff leg; Function threeway (15) connects warming, air conditioning terminal (19), filter (20), triple valve group (16) by pipeline, forms terminal (19) branch road of warming, air conditioning; Import threeway (21) connects hot water circulating pump (22), non-return valve (18), hot water condenser (13) hot water side, air bleeding valve (14), outlet threeway (23) by pipeline, forms the hot water branch road; Function threeway (15) forms boiler (24) hot water branch road by pipeline connection outlet threeway (23), boiler (24), moisturizing threeway (25), filter (20), import threeway (21), triple valve group (16); Upper hose forms moisturizing, level pressure branch road by filter (20), low tension switch (12), non-return valve (18), draining safety valve (26); Water source side evaporator/condensers (6) is set up it and is driven water pump (27); The hot water fairlead of boiler (24) arranges waterway electromagnetic valve (28), and by low tension switch (12) control that arranges on moisturizing, the level pressure branch road.
2. according to water source heating air conditioner water heating machine claimed in claim 1, it is characterized in that: refrigerant three-way magnetic valve (4.3) is 1 refrigerant three-way magnetic valve (4.3), or is connected with 1 refrigerant Unidirectional solenoid valve (4.1) and 1 threeway by 1 refrigerant bidirectional electromagnetic valve (4.2) and forms.
3. according to water source heating air conditioner water heating machine claimed in claim 1, it is characterized in that: refrigerant bidirectional electromagnetic valve (4.2) is 1 refrigerant bidirectional electromagnetic valve (4.2), or is connected to form by 1 refrigerant Unidirectional solenoid valve (4.1) and 1 coolant solo valve (5) and 2 threeway reverse parallel connections.
4. according to water source heating air conditioner water heating machine claimed in claim 1, it is characterized in that: expansion valve (9) is a kind of in electric expansion valve, heating power expansion valve, capillary, the restricting orifice, or mutual series, parallel structure therebetween.
5. according to water source heating air conditioner water heating machine claimed in claim 1, it is characterized in that: triple valve group (16) is 1 triple valve, or is connected by 2 two-port valves and 1 threeway and forms.
6. according to water source heating air conditioner water heating machine claimed in claim 1, it is characterized in that: using side evaporator/condensers (10) and hot water condenser (13) is a kind of in shell and tube exchanger, plate type heat exchanger, plate-fin heat exchanger, double pipe heat exchanger, the coil exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220265085 CN202869073U (en) | 2012-05-19 | 2012-05-19 | Water source heating, air conditioning and water heating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220265085 CN202869073U (en) | 2012-05-19 | 2012-05-19 | Water source heating, air conditioning and water heating machine |
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| Publication Number | Publication Date |
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| CN202869073U true CN202869073U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220265085 Expired - Fee Related CN202869073U (en) | 2012-05-19 | 2012-05-19 | Water source heating, air conditioning and water heating machine |
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| CN (1) | CN202869073U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721235A (en) * | 2012-05-19 | 2012-10-10 | 合肥天鹅制冷科技有限公司 | Water source heating and air conditioning water heater |
-
2012
- 2012-05-19 CN CN 201220265085 patent/CN202869073U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721235A (en) * | 2012-05-19 | 2012-10-10 | 合肥天鹅制冷科技有限公司 | Water source heating and air conditioning water heater |
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Granted publication date: 20130410 Termination date: 20210519 |
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| CF01 | Termination of patent right due to non-payment of annual fee |