CN102389262A - Instant heating temperature-adjustable water dispenser and control method thereof - Google Patents
Instant heating temperature-adjustable water dispenser and control method thereof Download PDFInfo
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- CN102389262A CN102389262A CN201110343208XA CN201110343208A CN102389262A CN 102389262 A CN102389262 A CN 102389262A CN 201110343208X A CN201110343208X A CN 201110343208XA CN 201110343208 A CN201110343208 A CN 201110343208A CN 102389262 A CN102389262 A CN 102389262A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 282
- 238000010438 heat treatment Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000003860 storage Methods 0.000 claims abstract description 44
- 230000035622 drinking Effects 0.000 claims description 24
- 238000005485 electric heating Methods 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 239000008236 heating water Substances 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 1
- 238000009835 boiling Methods 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 206010053615 Thermal burn Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
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Abstract
The invention provides an instant heating temperature-adjustable water dispenser and a control method thereof. The water dispenser comprises a machine body (1), a heating device (2), a water outlet valve (4), a water storage tank (7) and a control system, wherein the water storage tank (7) is positioned at the upper part of the machine body (1), the water storage tank (7) is communicated with a water inlet of the heating device (2) through a water tank water outlet (8) arranged at the bottom of the water storage tank, a water inlet valve (10) is arranged on a pipeline connecting the water tank water outlet (8) and the heating device (2), a water outlet of the heating device (2) is connected with the water outlet valve (4), and a water pump (11) is also arranged between the water tank water outlet (8) and the water inlet of the. The invention adopts the structural mode of forcibly feeding water by matching with the water pump, so that the water outlet is more stable, the water temperature can be adjusted at will, and different requirements of consumers on the water temperature are met; the invention shortens the water outlet time to 2-5 seconds, and solves the defects of long water outlet time and low water outlet quantity of instant heating water dispensers and the like. The control method of the invention has simple operation and convenient control.
Description
Technical field
The invention belongs to the water dispenser technical field, relate in particular to a kind of instant-heating water drinking machine and control method thereof of scalable water outlet water temperature.
Background technology
Many Electric radiant Heating Film heat-generating pipes of employing that present instant heating type drinking machine has heat, and like the disclosed a kind of instant heating type drinking machine that is used to supply fresh boiled water of Chinese patent notification number CN201260606, comprise body, bucket, heater, steam trap, magnetic valve and faucet; Said bucket is communicated with the water outlet of water tank of heater, and the delivery port of said heater is connected with the bottom of hot-water line, and the top of said hot-water line is communicated with said steam trap; The delivery port of steam trap is communicated with outlet pipe; Said outlet pipe is communicated with faucet, and said outlet pipe is provided with magnetic valve, and said instant heating type drinking machine also comprises triple valve; Said triple valve comprises water inlet end, big flow water side and low discharge water side; The delivery port of said steam trap is connected with said water inlet end, and said big flow water side is connected with magnetic valve, and said magnetic valve is connected with outlet pipe; Said low discharge water side is communicated with hot-water line, and the aspect ratio bucket water level of said triple valve is high.This mode of heating is the boiling power water outlet that relies on water, though the water outlet water temperature is high, electric heating conversion efficiency is low excessively, also can't clean incrustation scale simultaneously and regulate water temperature.
Chinese patent publication number CN201196475 discloses a kind of electric water-boiling device of promptly opening; It make cold water in water back in the process of flowing by boiled; Its device comprises machine casing, place the inner pipeline heater of machine casing, electronic water-control device, target temperature to drive and control circuit etc.; It is characterized in that: the working method of promptly opening electric water-boiling device is to handle electronic water-control device and pipeline heater by target temperature driving and control circuit; Make the discharge of service heater and the electrical power dynamic fit balance of pipeline heater, the temperature of cold water rises that promptly flows through pipeline heater is to the 92-97 ℃ of heat Dynamic matching that needed heat and pipeline heater produced.This kind mode is in beginning most several seconds of water outlet; The heating-up temperature of water might not reach preset temperature and just flow out from delivery port; Treat that water temperature reaches water outlet after the temperature if close out water solenoid valve; Again can be owing to discharging the phenomenon that inside water pressure produces water projection in the process of beginning water outlet, it is dangerous to be prone to that scald takes place.
Also having a kind of mode of heating is to rely on stainless steel thick film heating board to heat; CN201359362 discloses a kind of fast heating type drinking water heater like the Chinese patent notification number; It comprises electric heater, water inlet pipe and water outlet pipe and heating controller; It is characterized in that the groove that a level refluxes, the airtight unidirectional parallel reflux line of formation that tightens up in the top back side with an Electric radiant Heating Film heating board of groove, the bottom surface of groove and parallel base plate tighten up into the flash heater of flat backflow.Adopt the beneficial effect of this fast heating type Feedwater Heater to be; Adding hot water storgae is the flat grid groove of unidirectional backflow, and the hot-water heater of groove and the parallel backflow cascade raising temperature of the airtight fastening formation in the Electric radiant Heating Film heating board back side cooperates the suitable heating controller; Quick heating; Can in the short time in 3～5 seconds, heat the boiling water 150ml that 95～99 ℃, but this mode of heating is easy in pipeline, accumulate incrustation scale, incrustation scale also can't clean simultaneously.
Summary of the invention
To the problem that above-mentioned instant heating type drinking machine exists, the present invention provide a kind of water outlet time short, electric heating conversion efficiency is high, stable water outlet, and the adjustable temperature drinking machine of instant heating of scalable water outlet water temperature.
Another object of the present invention provides a kind of simple to operate, controls the control method of the adjustable temperature drinking machine of instant heating easily.
Technical solution of the present invention is: the adjustable temperature drinking machine of instant heating of the present invention; Comprise body, heater, outlet valve, storage tank and control system; Wherein storage tank is positioned at the top of body, and storage tank communicates with the water inlet of heater through its set water outlet of water tank in bottom, and wherein the pipeline that is connected with heater of water outlet of water tank is provided with water intaking valve; The delivery port of heater is connected with outlet valve, also is provided with water pump between the water inlet of water outlet of water tank and heater.
Said water pump is installed on water outlet of water tank and the pipeline that heater is connected, or the bottom of storage tank also is provided with another water outlet of water tank, and water pump is installed on this set another water outlet of water tank of storage tank bottom and the pipeline that heater is connected.
Said water intaking valve is a magnetic valve.
Also be provided with filter screen on said water pump and the pipeline that water outlet of water tank is connected.
Also be equiped with the steam knockout drum between the delivery port of said heater and the outlet valve, the steam knockout drum is arranged on the top of heater, and the steam knockout drum comprises tank body; Tank body is provided with water inlet, delivery port, exhaust outlet and Butterworth Hatch, and water inlet is arranged on the bottom of tank body, and delivery port is arranged on a side of tank body; Exhaust outlet is arranged on the top of tank body; Butterworth Hatch is arranged on the middle part of tank body, and its position is higher than delivery port and is lower than exhaust outlet, and the water inlet of steam knockout drum communicates with the delivery port of heater; The delivery port of steam knockout drum communicates with the water inlet of outlet valve, and scavenge pipe is communicated with storage tank.
On the scavenge pipe of said steam knockout drum and the mouth of pipe that storage tank is communicated with sealing-plug is installed.
In the outlet pipe of said steam knockout drum temperature sensor is installed.
Said outlet valve comprises water solenoid valve and water out adapter; Go out water solenoid valve and be provided with water inlet pipe and outlet pipe; The water out adapter set inside has web plate, and the set water outlet of water tank in water inlet pipe and storage tank bottom communicates, and is threaded between outlet pipe and the water out adapter.
Said water out adapter is provided with water nozzle, and water nozzle comprises some apopores, and the inner and the outer end of water nozzle are arcuate structure, and the outer surface of water out adapter is provided with anti-skidding muscle.
The water inlet of said heater also is connected with drainage joint, and drainage joint is installed in the bottom of body; Said heater is quartz glass electric heating membrane pipe or stainless steel thick film heating board;
The control method of the adjustable temperature drinking machine of instant heating of the present invention comprises the steps:
Usually under the state, water intaking valve is a normally open, and the water of storage tank flows into heater via the pipeline that water intaking valve is set, and makes heater water level and storage tank keep balance;
When heater was started working, after the heating several seconds, water intaking valve was closed, and water pump is opened simultaneously, and the water of storage tank is continuously pumped into heater via water pump.
When heater stop was worked, water pump quit work simultaneously, and water intaking valve is opened, and with supplementing water in heater, kept the water level balance between heater and the storage tank.
The present invention is owing to adopt the method that water pump is controlled and water intaking valve control water outlet combines to control water-out manners; Initial period uses the outlet pipe elder generation water outlet of water intaking valve, and gas in the mild discharge pipe is closed magnetic valve then; Adopt the pumping line water outlet, guarantee the lasting and stable of water outlet.Therefore, the present invention makes water outlet more stable, and water temperature can regulate arbitrarily, has satisfied the different demands of consumer to water temperature; In addition, the incrustation scale purging system of the present invention's design can make cleaning fluid wash cycles in pipeline, and is easy to use; The water outlet time has shortened to 2-5 second, has solved the shortcomings that the water time is long, water yield is few such as instant-heating water drinking machine.
Description of drawings
Fig. 1 is an embodiment of the invention structural representation;
Fig. 2 is the steam knockout drum stereogram of the embodiment of the invention;
Fig. 3 is the outlet valve stereogram of the embodiment of the invention;
Fig. 4 is the water out adapter stereogram of the embodiment of the invention.
The specific embodiment
Be described further below in conjunction with the accompanying drawing specific embodiments of the invention.
Like Fig. 1, shown in 3; The adjustable temperature drinking machine of instant heating of the present invention; Comprise body 1, heater 2, outlet valve 4, storage tank 7 and control system; Wherein storage tank 7 is positioned at the top of body 1, and storage tank 7 communicates with the water inlet of heater 2 through its set water outlet of water tank 8 in bottom, and the pipeline that water outlet of water tank 8 is connected with heater 2 is provided with water intaking valve 10; The delivery port of heater 2 is connected with outlet valve 4, wherein also is provided with water pump 11 between the water inlet of water outlet of water tank 8 and heater 2.
Said water pump 11 is installed on water outlet of water tank 8 and the pipeline that heater 2 is connected; Or the bottom of storage tank 7 also is provided with another water outlet of water tank 81, and water pump 11 is installed on this set another water outlet of water tank 81 of storage tank 7 bottoms and the pipeline that heater 2 is connected.
Said water intaking valve 10 is a magnetic valve.
In order to prevent that impurity from stopping up water pump 11, is provided with filter screen 9 in the connecting line between water outlet of water tank 8 and water pump 11.
Also be equiped with steam knockout drum 5 between the delivery port of said heater 2 and the outlet valve 4; Steam knockout drum 5 is arranged on the top of heater 2, and steam knockout drum 5 comprises tank body 51, and tank body 51 is provided with water inlet 52, delivery port 53, exhaust outlet 54 and Butterworth Hatch 55; Water inlet 52 is arranged on the bottom of tank body 51; Delivery port 53 is arranged on a side of tank body 51, and exhaust outlet 54 is arranged on the top of tank body 51, and Butterworth Hatch 55 is arranged on the middle part of tank body 51; Its position is higher than delivery port 53 and is lower than exhaust outlet 54; The water inlet 52 of steam knockout drum 5 communicates with the delivery port of heater 2, and the delivery port 53 of steam knockout drum 5 communicates with the water inlet of outlet valve 4, and scavenge pipe 55 is communicated with storage tank 7.
On the scavenge pipe 55 of said steam knockout drum 5 and the mouth of pipe that storage tank 7 is communicated with sealing-plug 6 is installed.
In the outlet pipe 53 of said steam knockout drum 5 temperature sensor 3 is installed.
Said outlet valve 4 comprises water solenoid valve 41 and water out adapter 43; Go out water solenoid valve 41 and be provided with water inlet pipe 411 and outlet pipe 412; Water out adapter 43 set inside have web plate 42; Water inlet pipe 411 communicates with the set water outlet of water tank 8 in storage tank 7 bottoms, between outlet pipe 412 and the water out adapter 43 through being threaded.The purpose that web plate 42 is set is to reduce water velocity.
As shown in Figure 4, said water out adapter 43 is provided with water nozzle 431, and in order to increase the diameter of water outlet current, water nozzle 431 comprises some apopores, and the inner and the outer end of water nozzle 431 are arcuate structure, and purpose is that current can better be got together.Dismantle for ease and install, the outer surface of water out adapter 43 also is provided with anti-skidding muscle 432.
In addition, the water inlet of said heater 2 also is connected with drainage joint 12, and drainage joint 12 is installed in the bottom of body 1; Said heater is quartz glass electric heating membrane pipe or stainless steel thick film heating board.
The control method of the adjustable temperature drinking machine of instant heating of the present invention comprises the steps:
Usually under the state, water intaking valve 10 is a normally open, and the water of storage tank 7 flows into heater 2 from water outlet of water tank 8 via the pipeline that water intaking valve 10 is set, and makes heater water level and storage tank 7 keep balance;
Energized is pressed the heating button, and when heater 2 was started working, after the heating several seconds, water intaking valve 10 was closed, and water pump 11 is opened simultaneously, and the water of storage tank 7 is continuously pumped into heater via water pump 11.
When heater 2 quit work, water pump 12 quit work simultaneously, and water intaking valve 10 is opened, and with supplementing water in heater, kept water level balance between heater 2 and the storage tank 7.
Operation principle of the present invention is following: the water in the storage tank 7 flows into the heaters 2 from water outlet of water tank 8 water intaking valve 10 of flowing through, and the water level in the final heater 2 is equal with storage tank 7 interior water temperatures.Energized is pressed the heating button, and heater 2 starts heating; Go out water solenoid valve 41 and open, the water in the heater 2 is heated to boiling, and boiling water is under the effect of boiling power; Pour in the steam knockout drum 5, the water solenoid valve 41 of flowing through out at last flows out from water out adapter 43.Water intaking valve is opened earlier and is added water and in heater 2, heats; This process plays the function of preheating; Avoid the water pump on-line operation to make that water temperature does not reach design temperature in several seconds of outlet valve 4 beginning water outlets; Also can the pipeline gas inside be discharged simultaneously, when avoiding the pump working water outlet splash take place and scald the user.After heating a period of time, water intaking valve 10 is closed, and water pump 11 starts simultaneously, and forcing pump water in heater 2 so that flow velocity is more stable, is the temperature of scalable hot water through the power that changes water pump 11 and heater 2.Owing to exist various errors can influence the accuracy of water temperature in the heating process; 3 of temperature sensors that is provided with at the outlet pipe of steam knockout drum 5 53 feed back to the hot water temperature in the control system in real time; With the flow of regulating water pump 11 or the heating power of regulating heater 2, can guarantee water outlet water temperature more accurately with this.After pressing the heating button once more, heater 2 quits work with water pump 11 simultaneously.
In addition, the present invention also has the function of cleaning incrustation scale.During use, in storage tank (7), add an amount of water and citric acid, and open sealing-plug (6); After pressing the cleaning button, heater (2) begins heating, and water pump (11) starts work simultaneously; Temperature sensor (3) detects water temperature and water temperature is maintained about 60 ℃; Water in the steam knockout drum (5) is back to the storage tank (7) from scavenge pipe (55), so that water for cleaning recycles, when arriving the program setting time; Heater (2) and water pump (11) quit work, and open drainage joint (12) afterwards the sewage discharge is got final product.
Certainly, the adjustable temperature drinking machine of instant heating of the present invention can also have other distortion.In a word, doing conspicuous change according to the prompting of the foregoing description, and other every changes that do not break away from essence of the present invention, all should be included within the described scope of claim.
Claims (10)
1. adjustable temperature drinking machine of instant heating; Comprise body (1), heater (2), outlet valve (4), storage tank (7) and control system; Wherein storage tank (7) is positioned at the top of body (1); Storage tank (7) communicates with the water inlet of heater (2) through its set water outlet of water tank (8) in bottom; It is characterized in that the pipeline that water outlet of water tank (8) is connected with heater (2) is provided with water intaking valve (10), the delivery port of heater (2) is connected with outlet valve (4), also is provided with water pump (11) between the water inlet of water outlet of water tank (8) and heater (2).
2. the adjustable temperature drinking machine of instant heating according to claim 1; It is characterized in that: said water pump (11) is installed on water outlet of water tank (8) and the pipeline that heater (2) is connected; Or the bottom of storage tank (7) also is provided with another water outlet of water tank (81), and water pump (11) is installed on this set another water outlet of water tank (81) of storage tank (7) bottom and the pipeline that heater (2) is connected.
3. the adjustable temperature drinking machine of instant heating according to claim 1 is characterized in that: said water intaking valve (10) is a magnetic valve.
4. the adjustable temperature drinking machine of instant heating according to claim 1 is characterized in that: also be provided with filter screen (9) on said water pump (11) and the pipeline that water outlet of water tank is connected.
5. according to the adjustable temperature drinking machine of each described instant heating of claim 1 to 4; It is characterized in that: also be equiped with steam knockout drum (5) between the delivery port of said heater (2) and the outlet valve (4); Steam knockout drum (5) is arranged on the top of heater (2), and steam knockout drum (5) comprises tank body (51), and tank body (51) is provided with water inlet (52), delivery port (53), exhaust outlet (54) and Butterworth Hatch (55); Water inlet (52) is arranged on the bottom of tank body (51); Delivery port (53) is arranged on a side of tank body (51), and exhaust outlet (54) is arranged on the top of tank body (51), and Butterworth Hatch (55) is arranged on the middle part of tank body (51); Its position is higher than delivery port (53) and is lower than exhaust outlet (54); The water inlet (52) of steam knockout drum (5) communicates with the delivery port of heater (2), and the delivery port (53) of steam knockout drum (5) communicates with the water inlet of outlet valve (4), and scavenge pipe (55) is communicated with storage tank (7).
6. the adjustable temperature drinking machine of instant heating according to claim 5 is characterized in that: on the scavenge pipe (55) of said steam knockout drum (5) and the mouth of pipe that storage tank (7) is communicated with sealing-plug (6) is installed; In the outlet pipe (53) of said steam knockout drum (5) temperature sensor (3) is installed.
7. the adjustable temperature drinking machine of instant heating according to claim 6; It is characterized in that: said outlet valve (4) comprises water solenoid valve (41) and water out adapter (43); Go out water solenoid valve (41) and be provided with water inlet pipe (411) and outlet pipe (412); Water out adapter (43) set inside has web plate (42), and the set water outlet of water tank (8) in water inlet pipe (411) and storage tank (7) bottom communicates, and is threaded between outlet pipe (412) and the water out adapter (43).
8. the adjustable temperature drinking machine of instant heating according to claim 7; It is characterized in that: said water out adapter (43) is provided with water nozzle (431); Water nozzle (431) comprises some apopores; The inner and the outer end of water nozzle (431) are arcuate structure, and the outer surface of water out adapter (43) is provided with anti-skidding muscle (432).
9. the adjustable temperature drinking machine of instant heating according to claim 8 is characterized in that: the water inlet of said heater (2) also is connected with drainage joint (12), and drainage joint (12) is installed in the bottom of body (1); Said heater is quartz glass electric heating membrane pipe or stainless steel thick film heating board.
10. the control method of the adjustable temperature drinking machine of instant heating is characterized in that comprising the steps:
Usually under the state, water intaking valve (10) is a normally open, and the water of storage tank (7) flows into heater (2) via the pipeline that water intaking valve (10) is set, and makes heater water level and storage tank (7) keep balance;
When heater (2) when starting working, after the heating several seconds, water intaking valve (10) is closed, and water pump is opened simultaneously, and the water of storage tank (7) is continuously pumped into heater via water pump (11);
When heater (2) when quitting work, water pump (11) quits work simultaneously, and water intaking valve (10) is opened, and with supplementing water in heater, keeps the water level balance between heater (2) and the storage tank (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110343208.XA CN102389262B (en) | 2011-11-03 | 2011-11-03 | Instantaneous temperature-adjustable drinking water dispenser and control method thereof |
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| CN201110343208.XA CN102389262B (en) | 2011-11-03 | 2011-11-03 | Instantaneous temperature-adjustable drinking water dispenser and control method thereof |
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| CN102389262A true CN102389262A (en) | 2012-03-28 |
| CN102389262B CN102389262B (en) | 2017-02-22 |
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| CN102715840A (en) * | 2012-06-06 | 2012-10-10 | 美的集团有限公司 | Liquid heater and control method thereof |
| CN102846202A (en) * | 2012-08-21 | 2013-01-02 | 宁波祈禧电器有限公司 | Instant heating type drinking machine |
| CN102871551A (en) * | 2012-11-01 | 2013-01-16 | 沁园集团股份有限公司 | Quick-heating drink bar capable of adjusting temperature |
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| CN103767550A (en) * | 2012-10-22 | 2014-05-07 | 沁园集团股份有限公司 | Automatic descaling method of thermal-tank-free water dispenser |
| CN104207648A (en) * | 2013-05-31 | 2014-12-17 | 沁园集团股份有限公司 | Electrodeless thermoregulation water dispenser control method and system |
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| CN105212751A (en) * | 2014-06-23 | 2016-01-06 | 佛山市美的清湖净水设备有限公司 | Water heating device, control method thereof and water dispenser |
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| CN106419562A (en) * | 2016-12-06 | 2017-02-22 | 周冠明 | Pipeline type instant-heating water machine |
| CN107981726A (en) * | 2017-12-27 | 2018-05-04 | 郑州跃龙电子科技有限公司 | A kind of instant heating water fountain |
| CN108158399A (en) * | 2017-12-27 | 2018-06-15 | 郑州跃龙电子科技有限公司 | A kind of instant heating means of drinking-water |
| CN107928417A (en) * | 2017-12-27 | 2018-04-20 | 郑州跃龙电子科技有限公司 | A kind of instant heating water fountain based on Internet of Things |
| CN108895653A (en) * | 2018-05-21 | 2018-11-27 | 广东汇晶新能源科技有限公司 | Electrothermal film heating pipe and heating element and instant heating type drinking machine including it |
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Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Applicant after: MIDEA GROUP Co.,Ltd. Applicant after: FOSHAN SHUNDE MIDEA WATER DISPENSER MFG. Co.,Ltd. Address before: 528311 Beijiao, Foshan, Shunde District, the town of Guangdong, the United States Avenue, No. 6 Applicant before: Midea Group Applicant before: FOSHAN SHUNDE MIDEA WATER DISPENSER MFG. Co.,Ltd. |
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