CN105698368A - Water boiler and control method thereof - Google Patents

Water boiler and control method thereof Download PDF

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Publication number
CN105698368A
CN105698368A CN201410686131.XA CN201410686131A CN105698368A CN 105698368 A CN105698368 A CN 105698368A CN 201410686131 A CN201410686131 A CN 201410686131A CN 105698368 A CN105698368 A CN 105698368A
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Prior art keywords
water
temperature sensor
pipeline
boiler
controller
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CN201410686131.XA
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CN105698368B (en
Inventor
陈建亮
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Fuzhou Aquapower Electric Water Heater Co Ltd
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Fuzhou Aquapower Electric Water Heater Co Ltd
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Priority to CN201410686131.XA priority Critical patent/CN105698368B/en
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Abstract

The invention relates to a water boiler and a control method of the water boiler. Due to the facts that a water return pipeline is additionally arranged, and water remaining in a water outlet pipeline can be pumped back to a water inlet pipeline and a heating cup and heated again, the phenomenon of mixing unboiled water and boiled water is avoided, the situation that the water boiler can provide boiled water at the user-defined temperature for a user at any time is ensured, boiled water is heated only once, and healthy drinking water is guaranteed. In addition, due to the fact that the one-time water return control method is adopted, namely, the water boiler only conducts one-time water return movement after water supply is stopped, the phenomena of false detection and false operation of a water return pump are avoided, the fault or the damage caused by idling operation of the water return pump is avoided, and the situation that the water boiler normally provides boiled water for the user is guaranteed.

Description

A kind of boiler and control method thereof
Technical field
The present invention relates to drinking equipment field, specifically one boiler and control method thereof。
Background technology
Along with the quickening of raising and the rhythm of life of people's living standard, and the pursuit to healthy living, the requirement in drinking water also gradually steps up, and drinking equipment on the market exists following defect at present:
Existing boiler, after completing once water intaking, by storage tank or add heat container and have residual water in one section of pipeline of outlet, when next time uses, these residual water temperature often do not reach the requirement drunk, affect the impression of use water, particularly require higher occasion to water, for instance make tea, rush milk powder etc.。
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the technical problem to be solved be to provide a kind of can one-time heating control boiler and the control method thereof of leaving water temperature。
In order to solve above-mentioned technical problem, the technical solution used in the present invention one is:
A kind of boiler, including inlet unit, heating unit, water unit, backwater unit and control unit,
Described inlet unit includes inlet pipeline, and inlet pipeline is disposed with dynamoelectric water valve, water flow sensor and the first temperature sensor along water inlet direction;
Described heating unit includes Heating Cup and for controlling the controllable silicon of Heating Cup duty;
Described water unit includes outlet pipeline, and outlet pipeline is disposed with the second temperature sensor, the first electromagnetic valve and three-temperature sensor along water outlet direction;
Described backwater unit includes water return pipeline, and water return pipeline is disposed with the second electromagnetic valve and back water pump along backwater direction;
Described control unit includes controller, and controller electrically connects with dynamoelectric water valve, water flow sensor, the first temperature sensor, controllable silicon, the second temperature sensor, the first electromagnetic valve, three-temperature sensor, the second electromagnetic valve and back water pump respectively;
Described inlet pipeline, Heating Cup and outlet pipeline are sequentially connected with, and one end of described water return pipeline is connected between the first electromagnetic valve and the three-temperature sensor of outlet pipeline, and the other end of described water return pipeline is connected with inlet pipeline。
In order to solve above-mentioned technical problem, the technical solution used in the present invention two is:
A kind of control method of boiler as above, including:
One return water temperature value is set in the controller;
After boiler stops water supply, automatically detected the temperature sensor of three-temperature sensor by controller and compare with return water temperature value, if temperature sensor is less than or equal to return water temperature value, then controller controls back water pump and the unlatching of the second electromagnetic valve, water in outlet pipeline is withdrawn in inlet pipeline, output after reentering Heating Cup heating when boiler supplies water next time。
The beneficial effects of the present invention is: guarantee that boiler can provide the boiled water of user's design temperature any time, and boiled water only heats once, it is ensured that healthy drinking water。
Accompanying drawing explanation
Fig. 1 show a kind of structural representation of embodiment of the present invention。
Fig. 2 show the another kind of structural representation of embodiment of the present invention。
Label declaration:
10-inlet pipeline;11-dynamoelectric water valve;12-water flow sensor;13-the first temperature sensor;
20-Heating Cup;22-radiating block;
30-outlet pipeline;31-the second temperature sensor;32-the first electromagnetic valve;33-three-temperature sensor;34-metal heat insulation flexible pipe;35-faucet;
40-water return pipeline;41-the second electromagnetic valve;42-back water pump;43-check-valves;44-the first metal hose;45-the second metal hose;
50-controller;51-touch screen。
Detailed description of the invention
By describing the technology contents of the present invention, structural feature in detail, being realized purpose and effect, below in conjunction with embodiment and coordinate accompanying drawing to be explained in detail。
The key ideas of the present invention is in that: by setting up water return pipeline, the water of residual in outlet pipeline is made to be withdrawn in inlet pipeline and Heating Cup and reheat, thus avoiding the occurrence of water phenomenon, guarantee that boiler can provide the boiled water of user's design temperature any time, and boiled water only heats once, it is ensured that healthy drinking water。Additionally, the present invention control method by primary water, boiler only carries out primary water action after stopping water supply, thus avoiding the occurrence of the phenomenon such as error detection and back water pump misoperation, avoid fault that back water pump produces because of idle running or burn, it is ensured that boiler regular supply boiled water。
Referring to Fig. 1 and Fig. 2, the boiler of present embodiment, including inlet unit, heating unit, water unit, backwater unit and control unit。
Described inlet unit includes inlet pipeline 10, and inlet pipeline 10 is disposed with dynamoelectric water valve 11, water flow sensor 12 and the first temperature sensor 13 along water inlet direction;
Described heating unit includes Heating Cup 20 and for controlling the controllable silicon of Heating Cup 20 duty;
Described water unit includes outlet pipeline 30, and outlet pipeline 30 is disposed with second temperature sensor the 31, first electromagnetic valve 32 and three-temperature sensor 33 along water outlet direction;
Described backwater unit includes water return pipeline 40, and water return pipeline 40 is disposed with the second electromagnetic valve 41 and back water pump 42 along backwater direction;
Described control unit includes controller 50, and controller 50 electrically connects with dynamoelectric water valve 11, water flow sensor the 12, first temperature sensor 13, controllable silicon, second temperature sensor the 31, first electromagnetic valve 32, three-temperature sensor the 33, second electromagnetic valve 41 and back water pump 42 respectively;
Described inlet pipeline 10, Heating Cup 20 and outlet pipeline 30 are sequentially connected with, and one end of described water return pipeline 40 is connected between the first electromagnetic valve 32 and the three-temperature sensor 33 of outlet pipeline 30, and the other end of described water return pipeline 40 is connected with inlet pipeline 10。
The operation principle of the boiler of present embodiment is as follows:
When controller 50 receives starting-up signal, sense that current flow at water flow sensing unit 12, and when reaching boiler startup flow, controller 50 exports signal, and triggers controllable silicon connection, makes Heating Cup 20 work, according to the temperature difference between the second temperature sensor 31 and the first temperature sensor 13 and discharge, control the silicon controlled angle of flow, the performance number that output is required, meet set leaving water temperature。When Heating Cup 20 full power exports, time also not up to set leaving water temperature, dynamoelectric water valve 11 works, regulating water flow, so as to diminish, sets leaving water temperature until meeting。After stopping water supply, controller 50 will detect data and the temperature sensor of three-temperature sensor 33 automatically, if (return water temperature value can be set the return water temperature value that its temperature value presets less than controller 50 according to actually used situation, such as 55 DEG C or 75 DEG C), controller 50 controls back water pump 42, second electromagnetic valve 41 exports, make back water pump 42, second electromagnetic valve 41 works, after running a certain setting time, by the residual water in outlet pipeline 30, it is withdrawn in inlet pipeline 10 by water return pipeline 40, reenter when boiler supplies water next time Heating Cup 20 boiled after output, to avoid the occurrence of water phenomenon, guarantee that the water that boiler flows out is the boiled water that user needs temperature, and boiled water only heats once, ensure healthy drinking water。
Known from the above, the beneficial effects of the present invention is: by setting up water return pipeline 40, the water of residual in outlet pipeline 30 is made to be withdrawn in inlet pipeline 10 and Heating Cup 20 and reheat, thus avoiding the occurrence of water phenomenon, guarantee that boiler can provide the boiled water of user's design temperature any time, and boiled water only heats once, it is ensured that healthy drinking water。
Further, described water return pipeline 40 being additionally provided with check-valves 43, described check-valves 43 is between back water pump 42 and inlet pipeline 10。
From the above it can be seen that the beneficial effects of the present invention is: be provided with check-valves 43 before the outlet of back water pump 42 and Heating Cup 20 water inlet pipe, it is to avoid the water in pipeline is back in back water pump 42 under the effect of intake pressure, cause water outlet short circuit。
Further, described water return pipeline 40 being additionally provided with the first metal hose 44 and the second metal hose 45, described first metal hose 44 is between the second electromagnetic valve 41 and back water pump 42, and described second metal hose 45 is between back water pump 42 and check-valves 43。
Further, the water side of described outlet pipeline 30 is connected to faucet 35 by metal heat insulation flexible pipe 34。
From the above it can be seen that the beneficial effects of the present invention is: connect faucet 35 by metal heat insulation flexible pipe 34, both convenient installation, reduced again the loss of water outlet heat to greatest extent, it is ensured that the water temperature that boiler provides meets the requirement of user。
Further, described control unit also includes touch screen 51, and described touch screen 51 electrically connects with described controller 50。
From the above it can be seen that the beneficial effects of the present invention is: the convenient operation of touch screen 51, improve the Consumer's Experience of boiler。
Further, described controllable silicon is provided with radiating block 22, and described radiating block 22 is arranged on inlet pipeline 10。
Known from the above, the beneficial effects of the present invention is: by silicon controlled radiating block 22 is arranged on inlet pipeline 10, both the cold water in inlet pipeline 10 can have been utilized to cool down, improve the radiating efficiency of radiating block 22, the heat produced in controllable silicon work process can be made full use of again cold water is heated, reach to improve energy utilization rate and energy-saving and cost-reducing purpose。
Further, described second electromagnetic valve 41 is two-port valve or three-way valve。When the second electromagnetic valve 41 is two-port valve, its connected mode on water return pipeline 40 is as shown in Figure 1;When the second electromagnetic valve 41 is three-way valve, its connected mode on water return pipeline 40 is as shown in Figure 2。
Continue referring to shown in Fig. 1 and Fig. 2, the control method of the boiler of present embodiment, comprise the following steps:
One return water temperature value is set in the controller 50;
After boiler stops water supply, automatically detected the temperature sensor of three-temperature sensor 33 by controller 50 and compare with return water temperature value, if temperature sensor is less than or equal to return water temperature value, then controller 50 controls back water pump 42 and the second electromagnetic valve 41 is opened, water in outlet pipeline 30 is withdrawn in inlet pipeline 10, output after reentering Heating Cup 20 heating when boiler supplies water next time。
From the above it can be seen that the beneficial effects of the present invention is: guarantee that boiler can provide the boiled water of user's design temperature any time, and boiled water only heats once, it is ensured that healthy drinking water。
Further, after controller 50 controls back water pump 42 and the second electromagnetic valve 41 completes primary water, controller 50 stops the temperature sensor of detection three-temperature sensor 33, until boiler detects after water supply next time again。
Known from the above, the beneficial effects of the present invention is: due to three-temperature sensor 33 sensing is the temperature of residual water in outlet pipeline 30, also can detect the temperature of its ambient air simultaneously, for avoiding the occurrence of error detection, and cause the misoperations such as back water pump 42, the present invention adopts the control method of primary water especially, namely boiler only carries out primary water action after stopping water supply, controller 50 controls back water pump 42 and after the second electromagnetic valve 41 completes primary water, namely controller 50 stops the temperature of detection three-temperature sensor 33, back water pump 42 and the second electromagnetic valve 41 also no longer work, until boiler water supply next time carries out detecting and action after stopping again, guarantee that back water pump 42 etc. will not working without stint, thus avoiding the occurrence of the phenomenon such as error detection and back water pump 42 misoperation, avoid fault or breaking-up that back water pump 42 produces because of idle running。
Further, after controller 50 receives starting-up signal, first determining whether whether back water pump 42 has output, if it has, controller 50 controls dynamoelectric water valve 11 carries out contract fully, do not allow the inflow of water into inside boiler, heating unit can not be operated;If it is not, be normally carried out supply boiled water。
From the above it can be seen that the beneficial effects of the present invention is: by the duty of back water pump 42 is judged, it is to avoid water supply process and backwater process clash, so that it is guaranteed that boiler energy regular supply boiled water。
Further, when controller 50 detects that water flow sensing unit 12 has signal, controller 50 does not detect the temperature sensor of three-temperature sensor 33。
From the above it can be seen that the beneficial effects of the present invention is: avoid backwater misoperation。
Continuing referring to shown in Fig. 1 and Fig. 2, embodiments of the invention one are:
A kind of boiler, including inlet unit, heating unit, water unit, backwater unit and control unit。
Described inlet unit includes inlet pipeline 10, and inlet pipeline 10 is disposed with dynamoelectric water valve 11, water flow sensor 12 and the first temperature sensor 13 along water inlet direction;
Described heating unit includes Heating Cup 20 and for controlling the controllable silicon of Heating Cup 20 duty;
Described water unit includes outlet pipeline 30, and outlet pipeline 30 is disposed with second temperature sensor the 31, first electromagnetic valve 32 and three-temperature sensor 33 along water outlet direction;
Described backwater unit includes water return pipeline 40, and water return pipeline 40 is disposed with the second electromagnetic valve 41 and back water pump 42 along backwater direction;
Described control unit includes controller 50, and controller 50 electrically connects with dynamoelectric water valve 11, water flow sensor the 12, first temperature sensor 13, controllable silicon, second temperature sensor the 31, first electromagnetic valve 32, three-temperature sensor the 33, second electromagnetic valve 41 and back water pump 42 respectively;
Described inlet pipeline 10, Heating Cup 20 and outlet pipeline 30 are sequentially connected with, and one end of described water return pipeline 40 is connected between the first electromagnetic valve 32 and the three-temperature sensor 33 of outlet pipeline 30, and the other end of described water return pipeline 40 is connected with inlet pipeline 10。
Being additionally provided with check-valves 43 on described water return pipeline 40, described check-valves 43 is between back water pump 42 and inlet pipeline 10。
Being additionally provided with the first metal hose 44 and the second metal hose 45 on described water return pipeline 40, described first metal hose 44 is between the second electromagnetic valve 41 and back water pump 42, and described second metal hose 45 is between back water pump 42 and check-valves 43。
The water side of described outlet pipeline 30 is connected to faucet 35 by metal heat insulation flexible pipe 34。
Described control unit also includes touch screen 51, and described touch screen 51 electrically connects with described controller 50。
Described controllable silicon is provided with radiating block 22, and described radiating block 22 is arranged on inlet pipeline 10。
In sum, boiler provided by the invention and control method thereof, not only can ensure that boiler can provide the boiled water of user's design temperature any time, and can be prevented effectively from and the phenomenon such as error detection and back water pump misoperation occurs, avoid fault or breaking-up that back water pump produces because of idle running, it is ensured that boiler regular supply boiled water。
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the present invention and accompanying drawing content to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all in like manner include in the scope of patent protection of the present invention。

Claims (10)

1. a boiler, it is characterised in that: include inlet unit, heating unit, water unit, backwater unit and control unit,
Described inlet unit includes inlet pipeline, and inlet pipeline is disposed with dynamoelectric water valve, water flow sensor and the first temperature sensor along water inlet direction;
Described heating unit includes Heating Cup and for controlling the controllable silicon of Heating Cup duty;
Described water unit includes outlet pipeline, and outlet pipeline is disposed with the second temperature sensor, the first electromagnetic valve and three-temperature sensor along water outlet direction;
Described backwater unit includes water return pipeline, and water return pipeline is disposed with the second electromagnetic valve and back water pump along backwater direction;
Described control unit includes controller, and controller electrically connects with dynamoelectric water valve, water flow sensor, the first temperature sensor, controllable silicon, the second temperature sensor, the first electromagnetic valve, three-temperature sensor, the second electromagnetic valve and back water pump respectively;
Described inlet pipeline, Heating Cup and outlet pipeline are sequentially connected with, and one end of described water return pipeline is connected between the first electromagnetic valve and the three-temperature sensor of outlet pipeline, and the other end of described water return pipeline is connected with inlet pipeline。
2. boiler according to claim 1, it is characterised in that: being additionally provided with check-valves on described water return pipeline, described check-valves is between back water pump and inlet pipeline。
3. boiler according to claim 2, it is characterized in that: described water return pipeline is additionally provided with the first metal hose and the second metal hose, described first metal hose is between the second electromagnetic valve and back water pump, and described second metal hose is between back water pump and check-valves。
4. boiler according to claim 1, it is characterised in that: there is faucet the water side of described outlet pipeline by metal heat insulation is hose connection。
5. boiler according to claim 1, it is characterised in that: described control unit also includes touch screen, and described touch screen electrically connects with described controller。
6. boiler according to claim 1, it is characterised in that: described controllable silicon is provided with radiating block, and described radiating block is arranged on inlet pipeline。
7. the control method of the boiler as described in claim 1 to 6 any one, it is characterised in that including:
One return water temperature value is set in the controller;
After boiler stops water supply, automatically detected the temperature sensor of three-temperature sensor by controller and compare with return water temperature value, if temperature sensor is less than or equal to return water temperature value, then controller controls back water pump and the unlatching of the second electromagnetic valve, water in outlet pipeline is withdrawn in inlet pipeline, output after reentering Heating Cup heating when boiler supplies water next time。
8. the control method of boiler according to claim 7, it is characterized in that: after controller controls back water pump and the second electromagnetic valve completes primary water, controller stops the temperature sensor of detection three-temperature sensor, until boiler detects after water supply next time again。
9. the control method of boiler according to claim 7, it is characterised in that: after controller receives starting-up signal, first determine whether whether back water pump has output, if had, controller controls dynamoelectric water valve and carries out contract fully, does not allow the inflow of water into inside boiler, and heating unit can not be operated;If it is not, be normally carried out supply boiled water。
10. the control method of boiler according to claim 7, it is characterised in that: when controller detects that water flow sensing unit has signal, controller does not detect the temperature sensor of three-temperature sensor。
CN201410686131.XA 2014-11-25 2014-11-25 A kind of boiler and its control method Active CN105698368B (en)

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CN105698368B CN105698368B (en) 2019-03-19

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106440331A (en) * 2016-08-30 2017-02-22 陈非 Automatic constant-temperature heating system and control method thereof
CN108479170A (en) * 2018-05-18 2018-09-04 广州康柏能量健康科技有限公司 A kind of portable intelligent automatic purifier
CN111839230A (en) * 2020-08-26 2020-10-30 小熊电器股份有限公司 Instant-cooling and instant-heating water dispenser and instant-cooling and instant-heating control method
CN114468774A (en) * 2022-01-24 2022-05-13 赫比(上海)家用电器产品有限公司 Self-cleaning system of liquid supply pipeline and liquid supply equipment
CN114508849A (en) * 2021-12-20 2022-05-17 中船邮轮科技发展有限公司 Hot drinking water heating system of passenger liner

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006017373A (en) * 2004-06-30 2006-01-19 Toto Ltd Hot water storage type water heater
CN202511477U (en) * 2012-03-19 2012-10-31 肖成超 Temperature-control water-saving device for water heater
CN202532723U (en) * 2012-03-16 2012-11-14 叶文尧 Intelligent water return control device for water heater
CN103277924A (en) * 2013-05-31 2013-09-04 李朝勇 System and method for intelligent hot water circulation control and domestic solar water heater
CN103411314A (en) * 2013-08-05 2013-11-27 广东美的暖通设备有限公司 Hot water machine backwater control component, hot water machine and backwater control method thereof
CN204329290U (en) * 2014-11-25 2015-05-13 福州斯狄渢电热水器有限公司 A kind of boiler

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006017373A (en) * 2004-06-30 2006-01-19 Toto Ltd Hot water storage type water heater
CN202532723U (en) * 2012-03-16 2012-11-14 叶文尧 Intelligent water return control device for water heater
CN202511477U (en) * 2012-03-19 2012-10-31 肖成超 Temperature-control water-saving device for water heater
CN103277924A (en) * 2013-05-31 2013-09-04 李朝勇 System and method for intelligent hot water circulation control and domestic solar water heater
CN103411314A (en) * 2013-08-05 2013-11-27 广东美的暖通设备有限公司 Hot water machine backwater control component, hot water machine and backwater control method thereof
CN204329290U (en) * 2014-11-25 2015-05-13 福州斯狄渢电热水器有限公司 A kind of boiler

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106440331A (en) * 2016-08-30 2017-02-22 陈非 Automatic constant-temperature heating system and control method thereof
CN108479170A (en) * 2018-05-18 2018-09-04 广州康柏能量健康科技有限公司 A kind of portable intelligent automatic purifier
CN108479170B (en) * 2018-05-18 2023-10-31 广州康柏能量健康科技有限公司 Portable intelligent automatic water purifier
CN111839230A (en) * 2020-08-26 2020-10-30 小熊电器股份有限公司 Instant-cooling and instant-heating water dispenser and instant-cooling and instant-heating control method
CN114508849A (en) * 2021-12-20 2022-05-17 中船邮轮科技发展有限公司 Hot drinking water heating system of passenger liner
CN114508849B (en) * 2021-12-20 2024-03-08 中船邮轮科技发展有限公司 Heating system for hot drink water of postal wheel
CN114468774A (en) * 2022-01-24 2022-05-13 赫比(上海)家用电器产品有限公司 Self-cleaning system of liquid supply pipeline and liquid supply equipment
CN114468774B (en) * 2022-01-24 2024-04-16 赫比(上海)家用电器产品有限公司 Self-cleaning system of liquid supply pipeline and liquid supply equipment

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