CN103994495A - Water storage type energy-saving system and energy-saving method - Google Patents

Water storage type energy-saving system and energy-saving method Download PDF

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Publication number
CN103994495A
CN103994495A CN201410089539.9A CN201410089539A CN103994495A CN 103994495 A CN103994495 A CN 103994495A CN 201410089539 A CN201410089539 A CN 201410089539A CN 103994495 A CN103994495 A CN 103994495A
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water
temperature
hot
water tank
pipe
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CN201410089539.9A
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朱洪斌
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SUZHOU COOBOS FLUID TECHNOLOGY Co Ltd
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SUZHOU COOBOS FLUID TECHNOLOGY Co Ltd
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Priority to CN201410089539.9A priority Critical patent/CN103994495A/en
Publication of CN103994495A publication Critical patent/CN103994495A/en
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Abstract

The invention discloses a water storage type energy-saving system and an energy-saving method thereof. The water storage type energy-saving system comprises a water heater, a mixing valve, a water tank and a water consuming device. An inlet of the water heater is connected with a cold water pipe. An outlet of the water heater is connected with a hot water pipe. The mixing valve comprises two inlets and two outlets, wherein one inlet is connected with the cold water pipe, the other inlet is connected with the hot water pipe, one outlet is connected with a mixed water outlet, and the other outlet is connected with a backflow pipe. The water tank comprises two inlets and one outlet, wherein one inlet is connected with the backflow pipe, the other inlet is connected with the cold water pipe, and the outlet is connected with the water consuming device. The energy-saving system further comprises a backflow control mode, wherein the backflow control mode is used for detecting the temperature of water in the hot water pipe, comparing the temperature with the preset temperature, and controlling the communication mode between the inlet, connected with the hot water pipe, of the mixing valve and the two outlets of the mixing valve. The energy-saving system has the advantages of being simple in structure, convenient to install, low in cost and the like.

Description

Water-storage type energy-saving system and power-economizing method
Technical field
The present invention relates to water saving fixtures field, be specifically related to a kind of water-storage type energy-saving system and power-economizing method for water heater.
Background technology
Along with improving constantly of resident living condition, have a bath, wash the dishes etc. all needs to use a large amount of hot water.Present most of family all adopts shower, but because the water heater of most of families is all long to the distance between tap, and water heater need to first be put into a lot of water while arriving preset temperature from starting to, in the time needing hot water, the cold water in pipe must be discharged, until water temperature is suitable, the so water resource that has slatterned a lot of preciousnesses in vain, has also wasted the electric energy of heating water in early stage simultaneously.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of water-storage type energy-saving system and power-economizing method that can be used in heater water saving is provided.
For addressing the above problem, the present invention proposes a kind of water-storage type energy-saving system, comprising: water heater, mixing valve, water tank and water device, and the import of described water heater is connected with cold water pipe, and the outlet of described water heater is connected with hot-water line; Described mixing valve comprises two imports and two outlets, and one of them import is connected with described cold water pipe, and another import is connected with described hot-water line, and one of them outlet connects mixed water exports, and another outlet connects return duct; Described water tank comprises two imports and an outlet, and one of them import is connected with described return duct, and another import is connected with described cold water pipe, and described outlet is connected with described water device; Also comprise for detection of water temperature in described hot-water line and with preset temperature contrast, the import being connected with hot-water line of controlling described mixing valve and two outlets between the backflow control module of mode of communicating.
Water-storage type energy-saving system according to the present invention is directly discharged in water tank by utilizing backflow control module that temperature is reached to the not water of preset temperature, then utilize water tank to water device as the moisturizing such as toilet, washing machine, improved the utilization of water, reduced the waste of water.Therefore water-storage type energy-saving system of the present invention have simple in structure, easy for installation, the feature such as cost is extremely low.
In addition, water-storage type energy-saving system according to the present invention also has following additional technical feature:
Preferably, described backflow control module comprises temperature-sensing element, control chip and the first triple valve, described temperature-sensing element is located in described hot-water line, temperature-sensing element is connected with described control chip, control chip is connected with described the first triple valve, the first end of described the first triple valve connects described hot-water line, the second end connects the outlet of described mixing valve, the 3rd end connects described return duct, the water temperature that detects described hot-water line when temperature-sensing element is during lower than preset temperature, first end and the 4th end are communicated with, the second end is closed, the water temperature that detects described hot-water line when temperature-sensing element is during higher than preset temperature, first end and the second end are communicated with, the 4th end is closed.
Preferably, described backflow control module comprises temperature sensing spring, and described temperature sensing spring is located in described mixing valve; In the time that the water temperature in hot-water line does not reach temperature sensing spring characteristic value, temperature sensing spring shrinks, and described hot-water line and return duct are communicated with, mixed water exports is closed, and in the time that the water temperature in hot-water line reaches temperature sensing spring characteristic value, temperature sensing spring extends, hot-water line and mixed water exports are communicated with, and return duct is closed.
Preferably, described mixing valve is shower nozzle switch, and described mixed water exports is the shower nozzle that shower is used.
Preferably, in described water tank, be provided with ball float, ball float connects float switch, and float switch connects the import of described cold water pipe; In the time that ball float rises to preset height, float switch cuts out described cold water pipe, and when ball float drops to below preset height, float switch is opened described cold water pipe.
Preferably, described water tank is elevated tank or lower water box, between described lower water box and described water device, is provided with booster pump.
Preferably, described water tank is closed water tank, and described closed water tank upper end is provided with return pipe, and lower end is provided with intake or sewage draining exit.
Preferably, between the outlet of described water tank and water device, be provided with the second triple valve, the first end of described two triple valves connects cold water pipe, and the second end connects water device, and the 3rd end connects the outlet of water tank, under normal conditions, the 3rd end of described the second triple valve and the second end are communicated with, and first end is closed, under open mode, described first end and the 3rd end are communicated with, and the second end is closed.
Preferably, described water device is toilet or washing machine.
The present invention provides in addition a kind of and utilizes above-mentioned water-storage type energy-saving system to store up energy-conservation method, and step is as follows:
(1) while needing hot water, open mixing valve, backflow control module is started working, detect the real-time water temperature of water in current hot-water line, when real-time water temperature is during higher than preset temperature, backflow control module control mixing valve is communicated with hot-water line and mixed water exports, and by regulating the degree of the handle control hot water of mixing valve and the cold water mix of cold water pipe; When real-time water temperature is during lower than preset temperature, backflow control module control mixing valve is communicated with hot-water line and return duct, and hot water is imported in water tank;
(2) height of water level in detection water tank, when cistern water level is lower than preset water level, cold water pipe is automatically toward water tank moisturizing, and when cistern water level is higher than preset height, cold water pipe stops toward water tank moisturizing; In the time that return duct imports water in water tank higher than the highest preset height of water tank, in water tank, water overflows in bathroom by return pipe;
(3) under normal state, in the time of water device water, open the switch of water device, Water in Water Tanks flows in water device; In the time of the high-order placement of water tank, can obtain certain lift; In the time that water tank low level is placed, between water tank and water device, realize the certain lift of acquisition by setting up booster pump.
When can making water temperature lower than preset temperature, method of the present invention directly imports in water tank, can be again this water tank automatic water supplement simultaneously, the water of water tank is that water device supplies water, both realized and reduced the discharge that reaches the front cold water of preset temperature, reduce again the use of the booster pump in reflux course, there is the features such as easy to use, energy-conservation.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is the structural representation of a kind of water-storage type energy-saving system of the present invention.
description of reference numerals:
Water heater 1, hot-water line 2, cold water pipe 3, mixing valve 4, water tank 5, the second triple valve 6, return duct 7, return pipe 8, ball float 9, valve 10, intake 11, water device 12.
Detailed description of the invention
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, unless otherwise prescribed and limit, it should be noted that, term " installation ", " being connected ", " connection " should be interpreted broadly, for example, can be mechanical connection or electrical connection, can be also the connection of two element internals, can be to be directly connected, also can indirectly be connected by intermediary.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
Describe according to a kind of water-storage type energy-saving system of the embodiment of the present invention below with reference to Fig. 1.As shown in Figure 1, water-storage type energy-saving system of the present invention, comprises water heater 1, hot-water line 2, cold water pipe 3, mixing valve 4(shower nozzle switch), water tank 5, the first triple valve, the second triple valve 6, return duct 7, return pipe 8, ball float 9, valve and water device 12(toilet).
The import of described water heater 1 is connected with cold water pipe 3, and the outlet of described water heater 1 is connected with hot-water line 2; Described mixing valve 4 comprises two imports and two outlets, and one of them import is connected with described cold water pipe 3, and another import is connected with described hot-water line 2, and one of them outlet connects mixed water exports, and another outlet connects return duct 7; Described water tank 5 comprises two imports and an outlet, and one of them import is connected with described return duct 7, and another import is connected with described cold water pipe 3, and described outlet is connected with described water device 12; Also comprise for detection of the interior water temperature of described hot-water line 2 and with preset temperature contrast, the import being connected with hot-water line 2 of controlling described mixing valve 4 and two outlets between the backflow control module of mode of communicating.
Directly be discharged in water tank 5 by utilizing backflow control module that temperature is reached to the not water of preset temperature according to the water-storage type energy-saving system of the embodiment of the present invention, then utilize water tank 5 to water device 12 as the moisturizing such as toilet, washing machine, improve the utilization of water, reduced the waste of water.Therefore water-storage type energy-saving system of the present invention have simple in structure, easy for installation, the feature such as cost is extremely low.
Described backflow control module can have various structures, as example of the present invention, the structure of the first backflow control module is: it comprises temperature-sensing element, control chip and the first triple valve, described temperature-sensing element is located in described hot-water line 2, temperature-sensing element is connected with described control chip, control chip and described the first triple valve (are specially three-way solenoid valve, in Fig. 1, do not show) be connected, the first end of described the first triple valve connects described hot-water line 2, the second end connects the outlet of described mixing valve 4, the 3rd end connects described return duct 7, the water temperature that detects described hot-water line 2 when temperature-sensing element is during lower than preset temperature, first end and the 4th end are communicated with, the second end is closed, the water temperature that detects described hot-water line 2 when temperature-sensing element is during higher than preset temperature, first end and the second end are communicated with, the 4th end is closed.
The course of work of the first backflow control module is as follows: in the time of needs hot water, open mixing valve 4, backflow control module is started working, temperature-sensing element in backflow control module detects the real-time water temperature of current hot-water line 2 interior water temperatures, the real-time water temperature detecting is delivered to control chip, the real-time water temperature that control chip records temperature-sensing element and the contrast of default leaving water temperature, the real-time water temperature that temperature-sensing element records is lower than default leaving water temperature, return duct 7 and hot-water line 2 that backflow control chip drives the first triple valve conducting to be attached thereto, close one end that the first triple valve is connected with the mixed water exports of cold and hot mixing, the water that does not reach preset temperature in hot-water line 2 flows in return duct 7, the real-time water temperature that temperature-sensing element records is greater than or equal to default leaving water temperature, return duct 7 and mixed water exports that control chip drives the first triple valve conducting to be attached thereto, close one end that the first triple valve is connected with return duct 7, the water that reaches default leaving water temperature in hot-water line 2 flows out through faucet outlet.And control the discharge size of cold water and whether flow out by the handle (as the handle of shower nozzle switch, the ratio of controlling hot cold water is pulled in left and right) of mixing valve 4.
As reflux another example of control module of the present invention, the structure of the second backflow control module is as follows: it comprises temperature sensing spring, and described temperature sensing spring is located in described mixing valve 4; In the time that the water temperature in hot-water line 2 does not reach temperature sensing spring characteristic value, temperature sensing spring shrinks, described hot-water line 2 and return duct 7 are communicated with, mixed water exports is closed, in the time that the water temperature in hot-water line 2 reaches temperature sensing spring characteristic value, temperature sensing spring extends, and hot-water line 2 and mixed water exports are communicated with, and return duct 7 is closed.
The course of work of the second backflow control module is as follows: in the time of needs hot water, open mixing valve 4, backflow control module is started working, and in the time that the real-time water temperature in hot-water line 2 does not reach temperature sensing spring characteristic value, temperature sensing spring shrinks, and automatically opens return duct 7; In the time that the real-time water temperature in hot-water line 2 reaches temperature sensing spring characteristic value, temperature sensing spring extends, closing volume pipe 7 automatically, and the hot water that reaches requirement water temperature in hot-water line 2 is flowed out by mixed water exports.
As a concrete example of the present invention, described mixing valve 4 is shower nozzle switch, and described mixed water exports is the shower nozzle that shower is used.Native system is arranged in home bathroom, and the structure of this shower nozzle is different from structure of the prior art, and it has backflow control module of the present invention.
In described water tank 5, be provided with ball float 9, ball float 9 connects float switch, and float switch connects the import of described cold water pipe 3; In the time that ball float 9 rises to preset height, float switch cuts out described cold water pipe 3, and when ball float 9 drops to below preset height, float switch is opened described cold water pipe 3.Hence one can see that, and automatic water-supplying tank 5 moisturizings can meet the water needs of toilet, needn't switch the second triple valve 6 to water tank 5 moisturizings.Advantageously, described cold water pipe 3 is provided with valve 10, and it opens and closes for controlling whether being communicated with of cold water pipe 3 and water tank 5.
Described water tank 5 is elevated tank.Cardinal principle is to utilize the difference in height of elevated tank to 12 moisturizings of the water such as toilet, washing machine device, utilizes and highly obtains lift, highly rationally can cancel booster pump.Elevated tank can be arranged on the furred ceiling of toilet, installation and convenient, and cost is extremely low.If lower water box is provided with booster pump between described lower water box and described water device 12, the advantage of elevated tank is not need distribution, and green is energy consumption not, quiet.
According to concrete example of the present invention, described water tank 5 is closed water tank, and described closed water tank upper end is provided with return pipe 8, and lower end is provided with intake 11 or sewage draining exit.Closed water tank is airtight and pressure-bearing is not entered air by return pipe 8 during except water in water tank, and in water tank, water does not have the second way to contact with outside air, minimizing water pollution source.Can pressure-bearing after Water in Water Tank is full; The Main Function of return pipe 8 is (1) overflows, and in the time that high water tank reaches the highest preset water level height, the water in water tank is back in bathroom by return pipe 8; (2) exhaust, in the time of water inlet, can get rid of the air in water tank; (3) air-breathing, can be to air inlet in water tank in the time of water intaking.Intake 11 is the water in water tank directly, can rinse mop etc.Sewage draining exit can be regularly emptying by the water in water tank, prevents that water quality from polluting.
Between the outlet of described water tank 5 and water device 12, be provided with the second triple valve 6, the first end A of described two triple valves connects cold water pipe 3, the second end B connects water device 12, the 3rd end C connects the outlet of water tank 5, and under normal conditions, the 3rd end C of described the second triple valve 6 and the second end B are communicated with, first end A closes, under open mode, described first end A and the 3rd end C are communicated with, and the second end B closes.Described the second triple valve 6 can be three-way solenoid valve and mechanical three-way valve.When this structure prevents that ball float 9 from going wrong, 5 moisturizings of water supply case.
As concrete example of the present invention, described water device 12 is toilet or washing machine.
The embodiment of the present invention provides in addition a kind of and utilizes above-mentioned water-storage type energy-saving system to store up energy-conservation method, and step is as follows:
(1) while needing hot water, open mixing valve 4, backflow control module is started working, detect the real-time water temperature of current hot-water line 2 interior water, when real-time water temperature is during higher than preset temperature, backflow control module control mixing valve 4 is communicated with hot-water line 2 and mixed water exports, and by regulating the degree of the handle control hot water of mixing valve 4 and the cold water mix of cold water pipe 3; When real-time water temperature is during lower than preset temperature, backflow control module control mixing valve 4 is communicated with hot-water line 2 and return duct 7, and hot water is imported in water tank 5;
(2) height of detection water tank 5 interior water levels, when water tank 5 water levels are lower than preset water level, cold water pipe 3 is automatically toward water tank 5 moisturizings, and when water tank 5 water levels are higher than preset height, cold water pipe 3 stops toward water tank 5 moisturizings; In the time that return duct 7 imports water in water tank 5 higher than the highest preset height of water tank 5, the interior water of water tank 5 overflows in bathroom by return pipe 8;
(3) under normal state, in the time of water device 12 water, open the switch of water device 12, in water tank 5, water flows in water device 12; In the time of water tank 5 high-order placement, can obtain certain lift; In the time that water tank 5 low levels are placed, between water tank 5 and water device 12, realize the certain lift of acquisition by setting up booster pump.
When can making water temperature lower than preset temperature, method of the present invention directly imports in water tank 5, can be again these water tank 5 automatic water supplements simultaneously, the water of water tank 5 is that water device 12 supplies water, both realized and reduced the discharge that reaches the front cold water of preset temperature, reduce again the use of the booster pump in reflux course, there is the features such as easy to use, energy-conservation.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.

Claims (10)

1. a water-storage type energy-saving system, is characterized in that, comprising: water heater, mixing valve, water tank and water device, and the import of described water heater is connected with cold water pipe, and the outlet of described water heater is connected with hot-water line; Described mixing valve comprises two imports and two outlets, and one of them import is connected with described cold water pipe, and another import is connected with described hot-water line, and one of them outlet connects mixed water exports, and another outlet connects return duct; Described water tank comprises two imports and an outlet, and one of them import is connected with described return duct, and another import is connected with described cold water pipe, and described outlet is connected with described water device; Also comprise for detection of water temperature in described hot-water line and with preset temperature contrast, the import being connected with hot-water line of controlling described mixing valve and two outlets between the backflow control module of mode of communicating.
2. water-storage type energy-saving system according to claim 1, it is characterized in that, described backflow control module comprises temperature-sensing element, control chip and the first triple valve, described temperature-sensing element is located in described hot-water line, temperature-sensing element is connected with described control chip, control chip is connected with described the first triple valve, the first end of described the first triple valve connects described hot-water line, the second end connects the outlet of described mixing valve, the 3rd end connects described return duct, the water temperature that detects described hot-water line when temperature-sensing element is during lower than preset temperature, first end and the 4th end are communicated with, the second end is closed, the water temperature that detects described hot-water line when temperature-sensing element is during higher than preset temperature, first end and the second end are communicated with, the 4th end is closed.
3. water-storage type energy-saving system according to claim 1, is characterized in that, described backflow control module comprises temperature sensing spring, and described temperature sensing spring is located in described mixing valve; In the time that the water temperature in hot-water line does not reach temperature sensing spring characteristic value, temperature sensing spring shrinks, and described hot-water line and return duct are communicated with, mixed water exports is closed, and in the time that the water temperature in hot-water line reaches temperature sensing spring characteristic value, temperature sensing spring extends, hot-water line and mixed water exports are communicated with, and return duct is closed.
4. according to the water-storage type energy-saving system described in claim 1-3 any one, it is characterized in that, described mixing valve is shower nozzle switch, and described mixed water exports is the shower nozzle that shower is used.
5. water-storage type energy-saving system according to claim 1, is characterized in that, in described water tank, is provided with ball float, and ball float connects float switch, and float switch connects the import of described cold water pipe; In the time that ball float rises to preset height, float switch cuts out described cold water pipe, and when ball float drops to below preset height, float switch is opened described cold water pipe.
6. water-storage type energy-saving system according to claim 1, is characterized in that, described water tank is elevated tank or lower water box, between described lower water box and described water device, is provided with booster pump.
7. water-storage type energy-saving system according to claim 1, it is characterized in that, between the outlet of described water tank and water device, be provided with the second triple valve, the first end of described two triple valves connects cold water pipe, the second end connects water device, the 3rd end connects the outlet of water tank, and under normal conditions, the 3rd end of described the second triple valve and the second end are communicated with, first end is closed, under open mode, described first end and the 3rd end are communicated with, and the second end is closed.
8. according to the water-storage type energy-saving system described in claim 1,5,6,7 any one, it is characterized in that, described water tank is closed water tank, and described closed water tank upper end is provided with return pipe, and lower end is provided with intake or sewage draining exit.
9. according to the water-storage type energy-saving system described in claim 1,6,7 any one, it is characterized in that, described water device is toilet or washing machine.
10. utilize the water-storage type energy-saving system of stating of claim 1-9 any one to store up an energy-conservation method, it is characterized in that, step is as follows:
(1) while needing hot water, open mixing valve, backflow control module is started working, detect the real-time water temperature of water in current hot-water line, when real-time water temperature is during higher than preset temperature, backflow control module control mixing valve is communicated with hot-water line and mixed water exports, and by regulating the degree of the handle control hot water of mixing valve and the cold water mix of cold water pipe; When real-time water temperature is during lower than preset temperature, backflow control module control mixing valve is communicated with hot-water line and return duct, and hot water is imported in water tank;
(2) height of water level in detection water tank, when cistern water level is lower than preset water level, cold water pipe is automatically toward water tank moisturizing, and when cistern water level is higher than preset height, cold water pipe stops toward water tank moisturizing; In the time that return duct imports water in water tank higher than the highest preset height of water tank, in water tank, water overflows in bathroom by return pipe;
(3) under normal state, in the time of water device water, open the switch of water device, Water in Water Tanks flows in water device; In the time of the high-order placement of water tank, can obtain certain lift; In the time that water tank low level is placed, between water tank and water device, realize the certain lift of acquisition by setting up booster pump.
CN201410089539.9A 2014-03-12 2014-03-12 Water storage type energy-saving system and energy-saving method Pending CN103994495A (en)

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Publication number Priority date Publication date Assignee Title
CN104545600A (en) * 2015-01-05 2015-04-29 浙江大学 Machine vision and single chip microcomputer based trackable water-saving temperature control shower
CN108201392A (en) * 2017-12-29 2018-06-26 平潭诚信智创科技有限公司 A kind of Intelligent bathroom system and a kind of control method of Intelligent bathroom
CN108645041A (en) * 2018-06-07 2018-10-12 上海浦东路桥建设股份有限公司 Water-saving system and operating method for saving domestic water
CN112081957A (en) * 2020-09-23 2020-12-15 宁波华成阀门有限公司 Accurate temperature control water distribution valve and related components thereof

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JP2009063276A (en) * 2007-09-10 2009-03-26 Panasonic Corp Hot water storage type water heater
CN102535593A (en) * 2010-12-15 2012-07-04 松江区泗泾小学 Water-saving device of wash basin
CN202328503U (en) * 2011-12-02 2012-07-11 苏州科博思流体科技有限公司 Straight-line recovery water-saving device
CN103528192A (en) * 2013-10-23 2014-01-22 辉煌水暖集团有限公司 Water saving system for water heater
CN203731545U (en) * 2014-03-12 2014-07-23 苏州科博思流体科技有限公司 Water-storage type energy saving system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009063276A (en) * 2007-09-10 2009-03-26 Panasonic Corp Hot water storage type water heater
CN102535593A (en) * 2010-12-15 2012-07-04 松江区泗泾小学 Water-saving device of wash basin
CN202328503U (en) * 2011-12-02 2012-07-11 苏州科博思流体科技有限公司 Straight-line recovery water-saving device
CN103528192A (en) * 2013-10-23 2014-01-22 辉煌水暖集团有限公司 Water saving system for water heater
CN203731545U (en) * 2014-03-12 2014-07-23 苏州科博思流体科技有限公司 Water-storage type energy saving system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104545600A (en) * 2015-01-05 2015-04-29 浙江大学 Machine vision and single chip microcomputer based trackable water-saving temperature control shower
CN108201392A (en) * 2017-12-29 2018-06-26 平潭诚信智创科技有限公司 A kind of Intelligent bathroom system and a kind of control method of Intelligent bathroom
CN108645041A (en) * 2018-06-07 2018-10-12 上海浦东路桥建设股份有限公司 Water-saving system and operating method for saving domestic water
CN112081957A (en) * 2020-09-23 2020-12-15 宁波华成阀门有限公司 Accurate temperature control water distribution valve and related components thereof

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Application publication date: 20140820