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CN104976772A - Instant hot water available type water circulation flow device - Google Patents

Instant hot water available type water circulation flow device Download PDF

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Publication number
CN104976772A
CN104976772A CN201510417629.0A CN201510417629A CN104976772A CN 104976772 A CN104976772 A CN 104976772A CN 201510417629 A CN201510417629 A CN 201510417629A CN 104976772 A CN104976772 A CN 104976772A
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water
hot
hot water
circulation
solenoid valve
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CN201510417629.0A
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CN104976772B (en
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赵文安
赵鑫煌
涂娟娟
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  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

The invention discloses an instant hot water available type water circulation flow device, and relates to the field of water circulation devices. The instant hot water available type water circulation flow device comprises a controller, a cold water flow water path, a hot water flow water path and a water circulation loop. A normally-open electromagnetic valve Y1, a normally-closed electromagnetic valve Y2, a normally-closed electromagnetic valve Y3, a water pump and the like are arranged inside. The cold water flow water path and the hot water flow water path are each composed of two branches. When a user needs hot water for use and pipeline freezing prevention, only the controller is needed to control opening and closing of the electromagnet valves and operating pressurization of the water pump, hot water in a water tank is accelerated to circulate through a circulating pipeline, and the hot water flows to a water use port quickly. The instant hot water available type water circulation flow device can be matched with water heaters of various types, operation is simple, the hot water outflow speed is high, and the hot water is used once the hot water circulates and the flow device is started. Installation is convenient, a wall does not need to be broken, the trouble that cold water in a hot water pipeline needs to be wasted and drained before a traditional water heater is used is completely saved, and water resources and electric power resources are greatly saved.

Description

Namely one opens instant-heating and outlet hot formula water circulation circulation device
Technical field
The present invention relates to water circle device field, be specifically related to one and namely open instant-heating and outlet hot formula water circulation circulation device.
Background technology
Present pot-type boiler is roughly divided into: have hydraulic pressure type---gas heater, electric heater, air energy (source) water heater, small household boiler etc.; Without hydraulic pressure type---solar water heater, space energy water heater etc.
The water heater of present market sale: when needs use hot water to flow out, all needs first to be wasted by the cold water in hot water pipeline and bleeds off, just has hot water and ooze.So, not only cannot use temperature required hot water in time, user also needs long wait.Make the loss in vain of water resource and electric power resource, cause unnecessary economic loss and the waste of resource to user.
Though existing open source literature etc. also have design hot water device, all there is many weak points: 1, known hot water device: adaptive water heater type limitation single kind; 2, the hot water device had: the fixing hot water circuit time period also can only be set, no matter user need not need to use hot water, controller can according to the program set, as usual to water heater carry out frequently hot water circuit, heat again, and the water temperature of the hot water temperature of circulating out and water tank balances, hot water circuit is excessive, the electrical power that pump operation consumes is excessive, and power consumption is too high, causes unnecessary economic loss and the waste of electric power resource to user; 3, the hot water device also had: to mix water valve tap far apart because of water-heater water tank and circulating hot water pipe and hot water effluent's port, and hot water circuit pipeline is long, makes hot water effluent's speed slow, and wayward leaving water temperature and precision, with sometimes hot and sometimes cold during water.Fault rate is high, gives control, installation is made troubles, cause the problems such as maintenance cost is high.
Summary of the invention
Object of the present invention: be in order to thoroughly solve above-mentioned in all technical barriers, provide one and namely open instant-heating and outlet hot formula water circulation circulation device.
When user needs to use hot water, without the need to waiting for, with, with following, with opening, namely carrying out hot water, be the wide and energy-efficient water circulation circulation device of a kind of adaptive scope, significantly saved water resource and electric power resource.
For achieving the above object, the technical solution adopted in the present invention is:
Namely one opens instant-heating and outlet hot formula water circulation circulation device, it is characterized in that, comprises cold water circulation water route, hot water circulation water route, water-flow circuit and controller;
-cold water circulation water route, is provided with two branch roads, as follows:
Cold water circulation branch road 1, according to water (flow) direction, comprises tap water inlets K0, and through three-way pipe, normally open solenoid valve Y1, cold water check valve D2, cold water flows through and is arranged on flowing out by water terminal of cold water outflow port place;
Cold water circulation branch road 2, according to water (flow) direction, comprise tap water inlets K0, through three-way pipe, cold water flow to into described water-flow circuit entrance or be directly connected with the water inlet of water heater;
-hot water circulation water route, is provided with two branch roads, as follows:
Hot water circulation branch road 1, according to water (flow) direction, comprises and water-heater water tank hot water outlet, and hot water flows through and is arranged on flowing out by water terminal of hot water outflow port place;
Hot water circulation branch road 2, according to water (flow) direction, comprises and water-heater water tank hot water outlet, normally closed solenoid valve Y2, enters the water circulation entrance of described water-flow circuit or be directly connected with the water inlet of water heater through normally closed solenoid valve Y2;
-water-flow circuit, according to water (flow) direction, comprises water circulation entrance, normally closed solenoid valve Y3, water pump and water feeding of heater mouth;
-controller, for controlling the work of normally open solenoid valve Y1, normally closed solenoid valve Y2, normally closed solenoid valve Y3 and water pump.
Described water terminal is one or more tap or spray heads of being connected with mixed water valve, with the use of adapting device.
Cold water check valve D2 and hot water check valve D1 is separately installed with between described cooling water outlet and described hot water outlet and discharge terminal, to prevent air suck-back from entering in circulating line, when causing pump operation, the empty or not pump water of pump; Described normally closed solenoid valve Y3 is also connected with water tank and adds water one-way valve D3, this check valve D3 other end is connected to water-heater water tank water inlet, and it is in parallel with described water pump, mainly be convenient to add water at water tank, when mending cold water, cold water unidirectionally can flow rapidly into water-heater water tank water inlet, when hot water circuit, water pump can be stoped again to add water one-way valve D3 around water tank and to turn-take pump water, avoid hot water circuit failure.
Between described pump outlet and water-heater water tank water inlet, water tank water intake gate valve K1 is installed; Between described water-heater water tank hot water outlet and hot water outflow port, tank hot water's gate valve K2 is installed.The object of above-mentioned gate valve: be conveniently overhaul or change accessory time, close all water sources.
The link of described normally open solenoid valve Y1, normally closed solenoid valve Y2, normally closed solenoid valve Y3 and water pump is all provided with loose joint, so that the dismounting of device and maintenance.
In described hot water circulation water route, also Manual shunt valve is installed between its hot water outflow port and water outlet of water heater mouth, this Manual shunt valve manually can control the conversion that corresponding multiple water outlet of water heater saliva roads flow to, there are hydraulic pressure type water heater and the outdoor user used in combination without hydraulic pressure type water heater while of being convenient in installation room, are equipped with and use.
Described controller, comprises power supply connector, controls button, display unit, remote control R-T unit, temperature probe.
The probe segment of described temperature probe, arranges and is installed on the water side of normally closed solenoid valve Y2, is convenient to the hot water temperature of hot water outflow port and the detection of precision and control.
technique effect of the present invention:
1, simple to operate, can water outlet be pre-set temperature required, and automatically lock, and easy for installation, do not need to tear down body of wall;
2, the hot water rate of outflow is fast, namely follows plug and play, without the need to waiting for the buffering of hot water;
3, precisely control hot water effluent's port hot water temperature, control accuracy is high;
4, adaptive various types of water heater, applied widely;
5, multiple mixed water valve tap can be joined simultaneously, spray first-class, be applicable to being arranged on multiclass place;
6, eliminate conventional water heaters use hot water before, need first the cold water in hot-water line is wasted the puzzlement bled off, saved great lot of water resources and electric power resource.
Accompanying drawing explanation
Fig. 1 is that in the present invention, adaptation has hydraulic pressure type water heater and the structural representation without hydraulic pressure type water heater simultaneously;
Fig. 2 is the structural representation that the present invention's adaptation has hydraulic pressure type water heater;
Fig. 3 is the adaptive structural representation without hydraulic pressure type water heater of the present invention;
Fig. 4 is control circuit schematic diagram of the present invention.
Illustrate: 1-tap water inlets K0,2-three-way pipe, 3-normally open solenoid valve Y1,4-cold water outflow port, 5-tap or spray head, 6-water tank inlet, 7-tank hot water delivery port, 8-hot water outflow port, 9-normally closed solenoid valve Y2,10-normally closed solenoid 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-tank hot water gate valve K2,16-loose joint, 17-Manual shunt valve, 18-temperature probe, 19-water tank adds water one-way valve D3.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
Namely one as shown in the figure shown in 1 opens instant-heating and outlet hot formula water circulation circulation device, includes cold water circulation water route, hot water circulation water route, water-flow circuit and controller etc.
Cold water circulation water route: be made up of cold water circulation branch road 1 and cold water circulation branch road 2, as follows;
Cold water circulation branch road 1, according to water (flow) direction, comprise 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) is connected with being equipped with the tap of mixed water valve or spray head (5), and cold water is flowed out.
Cold water circulation branch road 2, according to water (flow) direction, comprise tap water inlets K0(1), three-way pipe (2), cold water be provided with hydraulic pressure type water-heater water tank water inlet (6) respectively or through normally open solenoid valve Y1(3) enter water-flow circuit entrance.
Hot water circulation water route: be made up of hot water circulation branch road 1 and hot water circulation branch road 2, as follows;
Hot water circulation branch road 1, according to water (flow) direction, comprise 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 outflow port (8) is connected with being equipped with the tap of mixed water valve or spray head (5), and hot water is flowed out.
Hot water circulation branch road 2, according to water (flow) direction, comprise 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 is provided with hydraulic pressure type water-heater water tank water inlet (6) respectively or enters described water-flow circuit entrance.Described normally closed solenoid valve Y2, its installation site is designed especially near hot water outflow port (8), makes the hot water energy very first time outflow water end (W.E.) mouth of circulation, and without the need to setting up any pipeline in addition, achieves by the object of hot water without the need to waiting for.
When hot water circuit, hot water check valve D1(12) cold water check valve D2(13), for preventing air from falling in intake line, avoid the hot water circuit hydraulic pressure affecting hot water circuit circulation device inside strong.Simultaneously normally closed solenoid valve Y3(10) be also connected with cold water check valve D3(19), this cold water check valve D3(19) other end is connected with water-heater water tank water inlet (6), and is installed in parallel with water pump (11).
Normally open solenoid valve Y1(3 in above-mentioned), normally closed solenoid valve Y2(9), normally closed solenoid valve Y3(10) and the link of water pump (11) loose joint (16) is all equipped with, be convenient to dismounting and the maintenance of device.
For ease of while installation room in have hydraulic pressure type water heater and the outdoor user without hydraulic pressure type water heater to be equipped with use, Manual shunt valve (7) is also installed between hot water outflow port and water-heater water tank hot water outlet, this Manual shunt valve (7) can the multiple water-heater water tank hot water outlet of Non-follow control corresponding selection, hot water flow to conversion.
Controller: act on and control normally open solenoid valve Y1(3), normally closed solenoid valve Y2(9), normally closed solenoid valve Y3(10) and the running break-make etc. of the control panel such as water pump (11).
As shown in Figure 4: this controller comprises DC low-voltage and controls power supply connector, controls button, display unit, remote-transmitter receiving system, temperature probe (18).The probe segment design and installation of temperature probe (18) is in normally closed magnet valve Y2(9) water side, be convenient in real time to the hot water temperature of hot water outflow port and the detection of precision and control.Between described cold water check valve D2 and hot water check valve D1, be provided with normally closed solenoid valve Y2, its installation site is designed especially near hot water effluent's port, makes the hot water energy very first time outflow water end (W.E.) mouth of circulation.Achieve the object of user when needing to use hot water without the need to waiting for.
use step is as follows:
1, as shown in Figure 1, if simultaneously mixed configuration is installed: have hydraulic pressure type water heater and without hydraulic pressure type water heater, respectively for electric heater and solar water heater;
When using cold water if only need, without the need to start-up connector, turn on tap cold water switch, cold water is by running water total gate valve K0(1) entrance inflow, through cold water circulation branch road 1, successively through three-way pipe (2), normally open solenoid valve Y1(3), and cold water check valve D2(13), by cold water outflow port (4), cold water flows out at once.
Because there being the water tank of hydraulic pressure type water heater to be directly communicated with outdoor running water pipe, therefore water tank has constant water pressure always, according to cold water flow path direction, cold water is by running water K0(1) entrance flows into, through normally open solenoid valve Y1(3), water tank adds water one-way valve D3(19), be provided with hydraulic pressure type water feeding of heater mouth.
When the water yield of solar water heater water tank decline gradually, not enough time, automatically normally closed solenoid valve Y3(10 is controlled by solar water heater) open separately, running water is circulated, cold water is successively by running water total gate valve K0(1) entrance flow into, normally open solenoid valve Y1(3) and water tank add water one-way valve D3(19), enter water-heater water tank water inlet, supplement to water-heater water tank and add cold water.
When if desired using hot water, first determine to need to use which kind of water heater supplying hot water, first sincere Manual shunt valve (17) is pulled, to the water supply of water heater position selected, another water heater passage can be closed automatically simultaneously, now start-up connector, control normally open solenoid valve Y1(3) close, make running water current cannot from normally open solenoid valve Y1(3) pass through, control normally closed solenoid valve Y2(9 simultaneously), normally closed solenoid valve Y3(10), water pump (11) three's interlock opens, circulating hot water can circulate through this three place.After water pump (11) is opened, hydraulic pressure increases, hot water circuit water velocity is accelerated, according to water (flow) direction, circulating hot water is by tank hot water's delivery port, through hot water valve K2(15), Manual shunt valve (17), normally closed solenoid valve Y2(9), hot water enters water-flow circuit entrance, when temperature probe (18) detects hot water effluent's temperature set in advance, controller controls normally closed solenoid valve Y2(9 at once), normally closed solenoid valve Y3(10) closedown, with normally open solenoid valve Y1(3) unlatching, hot water circulating device quits work automatically, holding state got back to by controller, now turn on tap or spray head (5) hot-water switch, hot water outflow port (8), the hot water of user's set temperature in advance will be flowed out immediately.
2, as shown in Figure 2, installation is configured separately: have hydraulic pressure type water heater, for electric heater.
When using cold water if only need, without the need to start-up connector, as long as turn on leading cold water switch, cold water is by running water K0(1) entrance flows into, circulate through cold water branch road 1, successively through normally open solenoid valve Y1(3), cold water check valve D2(13), by cold water outflow port (4), cold water flows out at once.
When if desired using hot water, the hot water circuit key of start-up connector, control normally open solenoid valve Y1(3) close, make running water current cannot from normally open solenoid valve Y1(3) pass through, control normally closed solenoid valve Y2(9 simultaneously), water pump (11), the two interlock is opened, and circulating hot water can circulate through this two place.Water pump (11) open after, hydraulic pressure increase, hot water circuit water velocity accelerate, according to water (flow) direction, circulating hot water by tank hot water's delivery port, through hot water valve K2(15), normally closed solenoid valve Y2(9), hot water is with hydraulic pressure type water heater water-flow circuit entrance.When temperature probe (18) detects hot water effluent's temperature set in advance, controller controls normally closed solenoid valve Y2(9 at once), normally closed solenoid valve Y3(10) closedown and normally open solenoid valve Y1(3) unlatching, hot water circulating device quits work automatically, holding state got back to by controller, now turn on tap (5) hot-water switch, hot water outflow port will flow out the hot water of user's set temperature in advance immediately.Because there being the water tank of hydraulic pressure type water heater to be directly communicated with outdoor running water pipe, therefore water tank has constant water pressure always, according to cold water flow path direction, cold water is by running water K0(1) entrance flows into, through normally open solenoid valve Y1(3), water tank adds water one-way valve D3(19), be provided with hydraulic pressure type water feeding of heater mouth.
3, as shown in Figure 3, installation is configured separately: without hydraulic pressure type water heater, for solar water heater;
When using cold water if only need, without the need to start-up connector, as long as turn on mixed water valve tap cold water switch, cold water is by running water K0(1) entrance inflow, through cold water circulation branch road 1, successively through normally open solenoid valve Y1(3), and cold water check valve D2(13), by cold water outflow port (4), cold water flows out at once.
When declining gradually without hydraulic pressure type water heater solar water heater, the space energy water-heater water tank water yield, not enough time, normally closed solenoid valve Y3(10 is controlled respectively by solar water heater or space energy water heater) open separately, running water is circulated, cold water is successively by tap water inlets K0, normally open solenoid valve Y1(3) and water tank add water one-way valve D3(19), enter water-heater water tank water inlet, supplement to solar water heater water tank and add cold water.
When if desired using hot water, the hot water circuit key of start-up connector, control normally open solenoid valve Y1(3) close, make running water current cannot from normally open solenoid valve Y1(3) pass through, control normally closed solenoid valve Y2(9 simultaneously), normally closed solenoid valve Y3(10), water pump (11) three's interlock opens, circulating hot water can circulate through this three place.Water pump (11) open after, hydraulic pressure increase, hot water circuit water velocity accelerate, according to water (flow) direction, circulating hot water by water-heater water tank hot water outlet, through hot water valve K2(15), normally closed solenoid valve Y2(9), enter the water circulation entrance of water-flow circuit.When temperature probe (18) visits hot water temperature set in advance, controller controls normally closed solenoid valve Y2(9 at once), normally closed solenoid valve Y3(10) closedown and normally open solenoid valve Y1(3) unlatching, hot water circulating device quits work automatically, holding state got back to by controller, now water wring tap (5) hot-water switch, will flow out the hot water of user's set temperature in advance immediately with water out end.
The above only have expressed the preferred embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction 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, without departing from the inventive concept of the premise, can also make some distortion, improvement and substitute, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (9)

1. namely open an instant-heating and outlet hot formula water circulation circulation device, it is characterized in that, comprise cold water circulation water route, hot water circulation water route, water-flow circuit and controller;
-cold water circulation water route, is provided with two branch roads, as follows:
Cold water circulation branch road 1, according to water (flow) direction, comprises tap water inlets K0, and through three-way pipe, normally open solenoid valve Y1, cold water check valve D2, cold water flows through and is arranged on flowing out by water terminal of cold water outflow port place;
Cold water circulation branch road 2, according to water (flow) direction, comprise tap water inlets K0, through three-way pipe, cold water flow to into described water-flow circuit entrance or be directly connected with the water inlet of water heater;
-hot water circulation water route, is provided with two branch roads, as follows:
Hot water circulation branch road 1, according to water (flow) direction, comprises water-heater water tank hot water outlet, and hot water flows through and is arranged on flowing out by water terminal of hot water outflow port place;
Hot water circulation branch road 2, according to water (flow) direction, comprises water-heater water tank hot water outlet, normally closed solenoid valve Y2, enters the water circulation entrance of described water-flow circuit or be directly connected with the water inlet of water heater through normally closed solenoid valve Y2;
-water-flow circuit, according to water (flow) direction, comprises water circulation entrance, normally closed solenoid valve Y3, water pump and water feeding of heater mouth;
-controller, for controlling the work of normally open solenoid valve Y1, normally closed solenoid valve Y2, normally closed solenoid valve Y3 and water pump.
2. namely one according to claim 1 opens instant-heating and outlet hot formula water circulation circulation device, it is characterized in that, described water terminal is one or more tap or spray heads of being connected with mixed water valve.
3. namely one according to claim 1 opens instant-heating and outlet hot formula water circulation circulation device, it is characterized in that, cold water check valve D2 and hot water check valve D1 is separately installed with between described cooling water outlet and described hot water outlet and discharge terminal, described normally closed solenoid valve Y3 is also connected with water tank and adds water one-way valve D3, this check valve D3 other end is connected to water feeding of heater mouth, and in parallel with described water pump.
4. namely one according to claim 1 opens instant-heating and outlet hot formula water circulation circulation device, it is characterized in that, between described pump outlet and water-heater water tank water inlet, is provided with water tank water intake gate valve K1; Between described water-heater water tank hot water outlet and hot water outflow port, tank hot water's gate valve K2 is installed.
5. namely one according to claim 1 opens instant-heating and outlet hot formula water circulation circulation device, it is characterized in that, the link of described normally open solenoid valve Y1, normally closed solenoid valve Y2, normally closed solenoid valve Y3 and water pump is all provided with loose joint.
6. namely one according to claim 1 opens instant-heating and outlet hot formula water circulation circulation device, it is characterized in that, in described hot water circulation water route, between its water-heater water tank hot water outlet and hot water outflow port, is provided with Manual shunt valve.
7. namely one according to claim 3 opens instant-heating and outlet hot formula water circulation circulation device, it is characterized in that, described normally closed solenoid valve Y2 is installed between cold water check valve D2 and hot water check valve D1.
8. namely one according to claim 1 is followed and is namely opened namely to go out out hot-water type water circulation circulation device, it is characterized in that, described controller, comprises power supply connector, controls button, display unit, remote control R-T unit, temperature probe.
9. namely one according to claim 8 opens instant-heating and outlet hot formula water circulation circulation device, it is characterized in that, the probe segment of described temperature probe, arranges the water side being installed on normally closed solenoid valve Y2.
CN201510417629.0A 2015-07-16 2015-07-16 One kind opens instant-heating and outlet hot formula water circulation circulation device Active CN104976772B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108469121A (en) * 2018-03-29 2018-08-31 上海应用技术大学 The water saving fixtures of water heater
CN109506373A (en) * 2018-12-29 2019-03-22 广东万和热能科技有限公司 The wall-hung boiler and its control method of bathroom and heating synchronous operation
CN112984840A (en) * 2021-02-25 2021-06-18 廖纪友 Energy complementary water heater and control method thereof

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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

Patent Citations (7)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108469121A (en) * 2018-03-29 2018-08-31 上海应用技术大学 The water saving fixtures of water heater
CN109506373A (en) * 2018-12-29 2019-03-22 广东万和热能科技有限公司 The wall-hung boiler and its control method of bathroom and heating synchronous operation
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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