CN104976772B - One kind opens instant-heating and outlet hot formula water circulation circulation device - Google Patents
One kind opens instant-heating and outlet hot formula water circulation circulation device Download PDFInfo
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- CN104976772B CN104976772B CN201510417629.0A CN201510417629A CN104976772B CN 104976772 B CN104976772 B CN 104976772B CN 201510417629 A CN201510417629 A CN 201510417629A CN 104976772 B CN104976772 B CN 104976772B
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Abstract
Instant-heating and outlet hot formula water circulation circulation device is opened the invention discloses one kind, is related to water circle device field.Including controller, cold water circulation water route, hot water stream water flowing road and water-flow circuit, inside set normally open solenoid valve Y1, normally closed solenoid valve Y2, normally closed solenoid valve Y3, water pump etc., the water route of cold water circulation simultaneously, hot water stream water flowing road are respectively made up of two branch roads, when user needs to use hot water and freezing prevention tubing, it need to only be pressurizeed by the operating of controller, the open and close and water pump that control magnetic valve, tank hot water accelerates to circulate by circulating line, makes hot water very fast arrival water end (W.E.) mouthful.The present invention's opens instant-heating and outlet hot formula water circulation circulation device, can be adapted to various types of water heaters, and operation is simple, and hot water effluent's speed is fast, that is, follows plug and play.It is easy for installation, be not required to destroy wall, thoroughly eliminate conventional water heaters using it is preceding, need that the cold water in hot water pipeline is first wasted to the puzzlement that bleeds off, greatly save water resource and electric power resource.
Description
Technical field
The present invention relates to water circle device field, and in particular to one kind opens instant-heating and outlet hot formula water circulation circulation device.
Background technology
Present pot-type boiler is roughly divided into：There is hydraulic pressure type --- gas heater, electric heater, air can (source) hot water
Device, small household boiler etc.；Without hydraulic pressure type --- solar water heater, space energy water heater etc..
The water heater of present market sale：When needing to use hot water to flow out, being required for first will be cold in hot water pipeline
Water, which is wasted, to be bled off, just has hot water and ooze.In this way, not simply failing to the hot water of temperature needed for using in time, user is also
It need to wait for a long time.Make the loss of water resource and electric power resource in vain, unnecessary economic loss and money is caused to user
The waste in source.
Though existing open source literature etc. also has design hot water device, all there are many weak points：1st, known hot water
Device：The water heater type limitation single kind of adaptation；2nd, the hot water device having：Also when fixed hot water circuit can only be set
Between section, no matter user need to need not use hot water, controller can be carried out frequently according to the program set, as usual to water heater
Hot water circuit, reheating, and the water temperature balance of the hot water temperature come and water tank is recycled, hot water circuit is excessive, and pump operation disappears
The electrical power of consumption is excessive, and power consumption is too high, and the waste of unnecessary economic loss and electric power resource is caused to user；3rd, also have
Hot water device：Because water-heater water tank and circulating hot water pipe and hot water effluent port water mixing valve tap are far apart, hot water is followed
Endless tube road is long, makes hot water effluent's speed slow, and leaving water temperature whard to control and precision, sometimes hot and sometimes cold during with water.Fault rate is high,
Made troubles to control, installation, cause the problems such as maintenance cost height.
The content of the invention
The purpose of the present invention：Be in order to thoroughly solve it is above-mentioned in a variety of technical barriers open there is provided one kind and go out heat
Ability of swimming water circulation circulation device.
When user needs to use hot water, without waiting for, with, with following, with opening, carrying out hot water, be a kind of range of fit
Extensively and energy-efficient water circulation circulation device, water resource and electric power resource have significantly been saved.
To reach above-mentioned purpose, the technical solution adopted in the present invention is：
One kind opens instant-heating and outlet hot formula water circulation circulation device, it is characterised in that including cold water circulation water route, hot water circulation
Water route, water-flow circuit and controller；
- cold water circulation water route, it is as follows provided with two branch roads：
Cold water circulation branch road 1, according to water (flow) direction, including tap water inlets K0, through three-way pipe, normally open solenoid valve Y1, cold water
Check valve D2, cold water stream is flowed out by flowing out the use water terminal of port installed in cold water；
Cold water circulation branch road 2, according to water (flow) direction, including tap water inlets K0, through three-way pipe, cold water stream is followed into the water
The entrance of loop back path is directly connected with the water inlet of water heater；
- hot water stream water flowing road, it is as follows provided with two branch roads：
Hot water circulate branch road 1, according to water (flow) direction, including with water-heater water tank hot water outlet, hot water stream by installed in
Use water terminal outflow at hot water stream exit port；
Hot water circulate branch road 2, according to water (flow) direction, including with water-heater water tank hot water outlet, normally closed solenoid valve Y2, often
Magnetic valve Y2 is closed into the water circulation entrance of the water-flow circuit or is directly connected with the water inlet of water heater；
- water-flow circuit, according to water (flow) direction, including water circulation entrance, normally closed solenoid valve Y3, water pump and water feeding of heater
Mouthful；
- controller, for controlling normally open solenoid valve Y1, normally closed solenoid valve Y2, normally closed solenoid valve Y3 and the work of water pump
Make.
Described is one or more taps or spray head for being connected with water mixing valve with water terminal, with making for adapting device
With.
Cold water check valve is separately installed between the cold water outflow port and the hot water stream exit port and discharge terminal
D2 and hot water check valve D1, to prevent air suck-back from entering in circulating line, when causing pump operation, pump sky or not pump water；It is described
Normally closed solenoid valve Y3 is also associated with water tank and added water check valve D3, and the check valve D3 other ends are connected to water-heater water tank water inlet,
And it is in parallel with the water pump, mainly it is easy to when water tank adds water, mends cold water, cold water can unidirectionally flow rapidly into water-heater water tank and enter
The mouth of a river, in hot water circuit, can prevent water pump from being turn-taked pump water around the water tank check valve D3 that adds water again, it is to avoid hot water circuit mistake
Lose.
Between pump outlet and the water-heater water tank water inlet, water tank water intake gate valve K1 is installed；The water heater
Between tank hot water's delivery port and hot water stream exit port, tank hot water's gate valve K2 is installed.The purpose of above-mentioned gate valve：It is for side
Just when overhauling or changing accessory, all water sources of closing.
The normally open solenoid valve Y1, normally closed solenoid valve Y2, the connection end of normally closed solenoid valve Y3 and water pump are mounted on loose joint,
In order to the dismounting and maintenance of device.
In the hot water stream water flowing road, Manual shunt valve is also equipped between its hot water stream exit port and water heater mouth,
The Manual shunt valve can control the conversion of corresponding multiple water heater mouth water route flow directions manually, be easy to while installing interior has
Hydraulic pressure type water heater and the outdoor user being used in mixed way without hydraulic pressure type water heater, outfit are used.
The controller, including power supply connector, control button, display device, remote control R-T unit, temperature probe.
The probe segment of the temperature probe, sets the water side for being installed on normally closed solenoid valve Y2, is easy to hot water outflow end
The hot water temperature of mouth and the detection and control of precision.
The technique effect of the present invention：
1st, it is simple to operate, temperature needed for water outlet can be pre-set, and lock automatically, and it is easy for installation, it is not required to dismantle wall；
2nd, the hot water rate of outflow is fast, that is, plug and play is followed, without waiting for the buffering of hot water；
3rd, hot water effluent port hot water temperature is precisely controlled, control accuracy is high；
4th, various types of water heaters are adapted to, it is applied widely；
5th, multiple water mixing valve taps, spray can be matched somebody with somebody simultaneously first-class, is adapted for mount on multiclass place；
6th, eliminate conventional water heaters before using hot water, need first to waste the cold water in hot-water line bleed off tired
Disturb, saved great lot of water resources and electric power resource；
Brief description of the drawings
While being fitted with hydraulic pressure type water heater and the structural representation without hydraulic pressure type water heater during Fig. 1 is of the invention；
Fig. 2 is fitted with the structural representation of hydraulic pressure type water heater for the present invention；
Fig. 3 is structural representation of the present invention adaptation without hydraulic pressure type water heater；
Fig. 4 is present invention control circuit theory diagrams.
Illustrate：1- tap water inlets K0,2- three-way pipe, 3- normally open solenoid valves Y1,4- cold water outflow port, the 5- fire hoses
Head or spray head, 6- water tank inlets, 7- tank hot water's delivery ports, 8- hot water stream exit ports, 9- normally closed solenoid valves Y2,10- are normal
Close magnetic valve Y3,11- water pump, 12- hot water check valve D1,13- cold water check valve D2,14- water tank water intake gate valve K1,15- water tanks
Hot water valve's K2,16- loose joint, 17- Manual shunt valves, 18- temperature probes, 19- water tanks add water check valve D3.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is further described.
One kind shown in 1 is out instant-heating and outlet hot formula water circulation circulation device as shown in the figure, includes cold water circulation water route, heat
Current water flowing road, water-flow circuit and controller etc..
Cold water circulation water route：It is made up of cold water circulation branch road 1 and cold water circulation branch road 2, it is as follows；
Cold water circulation branch road 1, according to water (flow) direction, including tap water inlets K0 (1), three-way pipe (2), normally open solenoid valve Y1
(3), cold water check valve D2 (13), cold water outflow port (4) are connected with the tap equipped with water mixing valve or spray head (5), are made
Cold water flows out.
Cold water circulation branch road 2, has been separately flowed into according to water (flow) direction, including tap water inlets K0 (1), three-way pipe (2), cold water
Hydraulic pressure type water-heater water tank water inlet (6) enters water-flow circuit entrance through normally open solenoid valve Y1 (3).
Hot water stream water flowing road：It is made up of hot water circulation branch road 1 and hot water circulation branch road 2, it is as follows；
Hot water circulates branch road 1, according to water (flow) direction, including water-heater water tank hot water outlet (7), hot water valve K2 (15),
Manual shunt valve (17), hot water check valve D1 (12), hot water stream exit port (8) and the tap or spray head equipped with water mixing valve
(5) connect, flow out hot water.
Hot water circulates branch road 2, according to water (flow) direction, including water-heater water tank hot water outlet (7), through hot water valve K2
(15), Manual shunt valve (17), normally closed solenoid valve Y2 (9), circulating hot water cold water have separately flowed into hydraulic pressure type water-heater water tank and entered
The mouth of a river (6) enters the water-flow circuit entrance.The normally closed solenoid valve Y2, its installation site is specifically designed close to hot water stream
Exit port (8), enables the hot water very first time outflow water end (W.E.) mouthful of circulation, and without setting up any pipeline in addition, realizes use
Hot water without waiting for purpose.
In hot water circuit, hot water check valve D1 (12) cold water check valve D2 (13), to prevent air from falling in intake line,
Avoid influenceing the hot water circuit hydraulic pressure inside hot water circuit circulation device strong.Normally closed solenoid valve Y3 (10) is also associated with cold water simultaneously
Check valve D3 (19), cold water check valve D3 (19) other ends are connected with water-heater water tank water inlet (6), and with water pump (11) simultaneously
Connection is installed.
Normally open solenoid valve Y1's (3), normally closed solenoid valve Y2 (9), normally closed solenoid valve Y3 (10) and water pump (11) in above-mentioned
Connection end is equipped with loose joint (16), is easy to the dismounting and maintenance of device.
There are hydraulic pressure type water heater and the outdoor user without hydraulic pressure type water heater to be equipped with and use for ease of installing interior simultaneously, heat
Manual shunt valve (7) is also equipped between current exit port and water-heater water tank hot water outlet, the Manual shunt valve (7) can be manual
Control the multiple water-heater water tank hot water outlets of corresponding selection, the conversion of hot water flow direction.
Controller：Act on control normally open solenoid valve Y1 (3), normally closed solenoid valve Y2 (9), normally closed solenoid valve Y3 (10) and
Operating break-makes of control panel such as water pump (11) etc..
As shown in Figure 4：The controller includes DC low-voltage control power supply connector, control button, display device, remote control hair
Penetrate reception device, temperature probe (18).The probe segment design and installation of temperature probe (18) is in the water side of normally closed magnet valve Y2 (9), just
In hot water temperature in real time to hot water stream exit port and the detection of precision and control.The cold water check valve D2 and hot water check valve
Between D1, normally closed solenoid valve Y2 is installed, its installation site is specifically designed close to hot water effluent port, enables the hot water the of circulation
One time outflow water end (W.E.) mouthful.Realize user when needing to use hot water without waiting for purpose.
It is as follows using step:
If the 1, as shown in figure 1, mixed configuration is installed simultaneously：Have hydraulic pressure type water heater and without hydraulic pressure type water heater, respectively with
Exemplified by electric heater and solar water heater；
If only need to use cold water, without starting controller, tap cold water switch is turned on, cold water is by the total lock of running water
Valve K0 (1) entrance is flowed into, and is circulated branch road 1 through cold water, is sequentially passed through three-way pipe (2), normally open solenoid valve Y1 (3), and cold water is unidirectional
Valve D2 (13), flows out port (4), cold water flows out at once by cold water.
Because the water tank for having hydraulic pressure type water heater is directly connected with outdoor running water pipe, therefore water tank has constant water always
Pressure, according to cold water (flow) direction, cold water is by running water K0 (1) entrance is flowed into, add water check valve D3 through normally open solenoid valve Y1 (3), water tank
(19), flowing into has hydraulic pressure type water feeding of heater mouthful.
Be gradually reduced when the water of solar water heater water tank, it is not enough when, normally closed electricity is automatically controlled by solar water heater
Magnet valve Y3 (10) is individually opened, and running water is circulated, and cold water passes sequentially through the inflow of running water total gate valve K0 (1) entrance, normally opened electricity
Magnet valve Y1 (3) and water tank add water check valve D3 (19), into water-heater water tank water inlet, to water-heater water tank supplement plus cold water.
When if desired using hot water, first determine which kind of water heater supplying hot water needed to use, sincere Manual shunt valve is pulled first
(17), to the water supply of water heater position of selection, while another water heater passage can be closed automatically, now start controller, control
Normally open solenoid valve Y1 (3) is closed, and running water current can not be passed through from normally open solenoid valve Y1 (3), while controlling normally closed solenoid valve
Y2 (9), normally closed solenoid valve Y3 (10), water pump (11) three, which interlock, to open, and circulating hot water can circulate at three through this.Water pump (11) is opened
Qi Hou, hydraulic pressure increase, hot water circuit water velocity is accelerated, and according to water (flow) direction, circulating hot water is by tank hot water's delivery port, through hot water
Gate valve K2 (15), Manual shunt valve (17), normally closed solenoid valve Y2 (9), hot water enter water-flow circuit entrance, when temperature probe (18)
When detecting hot water effluent's temperature set in advance, controller controls normally closed solenoid valve Y2 (9), normally closed solenoid valve Y3 at once
(10) closing and normally open solenoid valve Y1 (3) unlatching, hot water circulating device are automatically stopped work, and controller returns to standby shape
State, now turns on tap or spray head (5) hot-water switch, hot water stream exit port (8), user will be flowed out immediately set in advance
Put the hot water of temperature.
2nd, as shown in Fig. 2 installation is separately configured：There is hydraulic pressure type water heater, by taking electric heater as an example.
If only need to use cold water, without starting controller, as long as turning on leading cold water switch, cold water is by running water K0
(1) entrance is flowed into, circulate branch road 1 through cold water, and successively through normally open solenoid valve Y1 (3), cold water check valve D2 (13) passes through cold water stream
Exit port (4), cold water flows out at once.
When if desired using hot water, start the hot water circuit key of controller, control normally open solenoid valve Y1 (3) is closed, and is made certainly
Water current can not pass through from normally open solenoid valve Y1 (3), while controlling normally closed solenoid valve Y2 (9), water pump (11), the two gearing is opened
Open, circulating hot water can circulate at two through this.After water pump (11) is opened, hydraulic pressure increase, hot water circuit water velocity is accelerated, according to current
Direction, circulating hot water is by tank hot water's delivery port, through hot water valve K2 (15), normally closed solenoid valve Y2 (9), and hot water, which enters, hydraulic pressure
Type water heater water-flow circuit entrance.When temperature probe (18) detects hot water effluent's temperature set in advance, controller is stood
Carve control normally closed solenoid valve Y2 (9), normally closed solenoid valve Y3 (10) closing and normally open solenoid valve Y1 (3) unlatching, hot water circuit
Device is automatically stopped work, and controller returns to holding state, now turns on tap (5) hot-water switch, hot water stream exit port is just
The hot water of the advance set temperature of user can be flowed out immediately.Because the water tank for having hydraulic pressure type water heater is direct with outdoor running water pipe
Connection, therefore water tank has constant water pressure always, according to cold water (flow) direction, cold water is flowed into, through normally opened electromagnetism by running water K0 (1) entrance
Valve Y1 (3), water tank add water check valve D3 (19), and inflow has hydraulic pressure type water feeding of heater mouthful.
3rd, as shown in figure 3, installation is separately configured：Without hydraulic pressure type water heater, by taking solar water heater as an example；
If only need to use cold water, without starting controller, as long as turning on water mixing valve tap cold water switch, cold water is by certainly
Water K0 (1) entrance is flowed into, and through cold water circulation branch road 1, sequentially passes through normally open solenoid valve Y1 (3), and cold water check valve D2 (13),
Port (4) are flowed out by cold water, cold water flows out at once.
When being gradually reduced without hydraulic pressure type water heater solar water heater, space energy water-heater water tank water, it is not enough when, respectively
By solar water heater or space energy water heater control normally closed solenoid valve Y3 (10) individually open, running water is circulated, cold water according to
It is secondary to be added water check valve D3 (19) by tap water inlets K0, normally open solenoid valve Y1 (3) and water tank, enter water into water-heater water tank
Mouthful, to solar water heater water tank supplement plus cold water.
When if desired using hot water, start the hot water circuit key of controller, control normally open solenoid valve Y1 (3) is closed, and is made certainly
Water current can not pass through from normally open solenoid valve Y1 (3), while controlling normally closed solenoid valve Y2 (9), normally closed solenoid valve Y3 (10), water
Pump (11) three, which interlocks, to open, and circulating hot water can circulate at three through this.After water pump (11) is opened, hydraulic pressure increase, hot water circuit water
Flow velocity degree is accelerated, and according to water (flow) direction, circulating hot water is by water-heater water tank hot water outlet, through hot water valve K2 (15), normally closed electricity
Magnet valve Y2 (9), into the water circulation entrance of water-flow circuit.When temperature probe (18) is visited to hot water temperature set in advance,
Controller controls normally closed solenoid valve Y2 (9), normally closed solenoid valve Y3 (10) closing and normally open solenoid valve Y1 (3) unlatching at once,
Hot water circulating device is automatically stopped work, and controller returns to holding state, and now leading (5) hot-water switch of water wring, uses water out
End will flow out the hot water of the advance set temperature of user immediately.
Described above only to express the preferred embodiment of the present invention, it describes more specific and in detail, but can not be because
This and be interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art,
On the premise of not departing from present inventive concept, some deformations can also be made, improves and substitutes, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (9)
1. one kind opens instant-heating and outlet hot formula water circulation circulation device, it is characterised in that including cold water circulation water route, hot water stream water flowing
Road, water-flow circuit and controller；
- cold water circulation water route, it is as follows provided with two branch roads：
Cold water circulation branch road 1, it is unidirectional through three-way pipe, normally open solenoid valve Y1, cold water according to water (flow) direction, including tap water inlets K0
Valve D2, cold water stream is flowed out by flowing out the use water terminal of port installed in cold water；
Cold water circulation branch road 2, according to water (flow) direction, including tap water inlets K0, through three-way pipe, cold water stream is returned into the water circulation
The entrance on road is directly connected with the water inlet of water heater；
- hot water stream water flowing road, it is as follows provided with two branch roads：
Hot water circulation branch road 1, according to water (flow) direction, including water-heater water tank hot water outlet, hot water stream passes through installed in hot water stream
Use water terminal outflow at exit port；
Hot water circulation branch road 2, according to water (flow) direction, including water-heater water tank hot water outlet, normally closed solenoid valve Y2, through normally closed electromagnetism
Valve Y2 enters the water circulation entrance of the water-flow circuit or is directly connected with the water inlet of water heater；
- water-flow circuit, according to water (flow) direction, including water circulation entrance, normally closed solenoid valve Y3, water pump and water feeding of heater mouthful；
- controller, for controlling normally open solenoid valve Y1, normally closed solenoid valve Y2, normally closed solenoid valve Y3 and the work of water pump.
2. one kind according to claim 1 opens instant-heating and outlet hot formula water circulation circulation device, it is characterised in that described to use water
Terminal is one or more taps or spray head for being connected with water mixing valve.
3. one kind according to claim 1 opens instant-heating and outlet hot formula water circulation circulation device, it is characterised in that the cold water
Cold water check valve D2 and hot water check valve D1 are separately installed between outflow port and the hot water stream exit port and discharge terminal,
The normally closed solenoid valve Y3 is also associated with water tank and added water check valve D3, and the check valve D3 other ends are connected to water feeding of heater mouthful,
And it is in parallel with the water pump.
4. one kind according to claim 1 opens instant-heating and outlet hot formula water circulation circulation device, it is characterised in that the water pump
Between delivery port and water-heater water tank water inlet, water tank water intake gate valve K1 is installed；The water-heater water tank hot water outlet with
Between hot water stream exit port, tank hot water's gate valve K2 is installed.
5. one kind according to claim 1 opens instant-heating and outlet hot formula water circulation circulation device, it is characterised in that described normally opened
Magnetic valve Y1, normally closed solenoid valve Y2, the connection end of normally closed solenoid valve Y3 and water pump are mounted on loose joint.
6. one kind according to claim 1 opens instant-heating and outlet hot formula water circulation circulation device, it is characterised in that the hot water
Circulate in water route, between its water-heater water tank hot water outlet and hot water stream exit port, Manual shunt valve is installed.
7. one kind according to claim 3 opens instant-heating and outlet hot formula water circulation circulation device, it is characterised in that described normally closed
Magnetic valve Y2, is installed between cold water check valve D2 and hot water check valve D1.
8. one kind according to claim 1 opens instant-heating and outlet hot formula water circulation circulation device, it is characterised in that the control
Device, including power supply connector, control button, display device, remote control R-T unit, temperature probe.
9. one kind according to claim 8 opens instant-heating and outlet hot formula water circulation circulation device, it is characterised in that the temperature detection
The probe segment of head, sets the water side for being installed on normally closed solenoid valve Y2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510417629.0A CN104976772B (en) | 2015-07-16 | 2015-07-16 | One kind opens instant-heating and outlet hot formula water circulation circulation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510417629.0A CN104976772B (en) | 2015-07-16 | 2015-07-16 | One kind opens instant-heating and outlet hot formula water circulation circulation device |
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| CN104976772A CN104976772A (en) | 2015-10-14 |
| CN104976772B true CN104976772B (en) | 2017-08-25 |
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| CN201510417629.0A Active CN104976772B (en) | 2015-07-16 | 2015-07-16 | One kind opens instant-heating and outlet hot formula water circulation circulation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108469121A (en) * | 2018-03-29 | 2018-08-31 | 上海应用技术大学 | The water saving fixtures of water heater |
| CN109506373B (en) * | 2018-12-29 | 2023-05-12 | 广东万和热能科技有限公司 | Toilet and bathroom and heating synchronous operation wall-mounted furnace and control method thereof |
| CN112984840A (en) * | 2021-02-25 | 2021-06-18 | 廖纪友 | Energy complementary water heater and control method thereof |
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| JP2005308251A (en) * | 2004-04-19 | 2005-11-04 | Chubu Electric Power Co Inc | Electric water heater |
| CN201983420U (en) * | 2011-03-09 | 2011-09-21 | 邱国云 | Instant heating type electric water heater of central hot water circulation system |
| CN202361640U (en) * | 2011-11-28 | 2012-08-01 | 陈晓秋 | Quick heating water-saving device for water heater |
| CN204358968U (en) * | 2014-11-19 | 2015-05-27 | 方晶 | A kind of water-saving device of water heater of instant-heating |
| CN204787277U (en) * | 2015-07-16 | 2015-11-18 | 赵文安 | It goes out hot -water type hydrologic cycle circulation device promptly to open promptly |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58182040A (en) * | 1982-04-20 | 1983-10-24 | Nippon Gakki Seizo Kk | Bath heater system |
| JP2004138273A (en) * | 2002-10-16 | 2004-05-13 | Masayuki Sakamoto | Hot water supply system and hot water supply control method |
| JP2005308251A (en) * | 2004-04-19 | 2005-11-04 | Chubu Electric Power Co Inc | Electric water heater |
| CN201983420U (en) * | 2011-03-09 | 2011-09-21 | 邱国云 | Instant heating type electric water heater of central hot water circulation system |
| CN202361640U (en) * | 2011-11-28 | 2012-08-01 | 陈晓秋 | Quick heating water-saving device for water heater |
| CN204358968U (en) * | 2014-11-19 | 2015-05-27 | 方晶 | A kind of water-saving device of water heater of instant-heating |
| CN204787277U (en) * | 2015-07-16 | 2015-11-18 | 赵文安 | It goes out hot -water type hydrologic cycle circulation device promptly to open promptly |
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| CN104976772A (en) | 2015-10-14 |
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