CN105783273A - Water heater - Google Patents

Water heater Download PDF

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Publication number
CN105783273A
CN105783273A CN201610278596.0A CN201610278596A CN105783273A CN 105783273 A CN105783273 A CN 105783273A CN 201610278596 A CN201610278596 A CN 201610278596A CN 105783273 A CN105783273 A CN 105783273A
Authority
CN
China
Prior art keywords
water
controller
wire
current
water heater
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610278596.0A
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Chinese (zh)
Inventor
梁国荣
范威
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Original Assignee
Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd filed Critical Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority to CN201610278596.0A priority Critical patent/CN105783273A/en
Publication of CN105783273A publication Critical patent/CN105783273A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H1/00Water heaters having heat generating means, e.g. boiler, flow- heater, water-storage heater
    • F24H1/10Continuous-flow heaters, i.e. in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12Continuous-flow heaters, i.e. in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14Continuous-flow heaters, i.e. in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/145Continuous-flow heaters, i.e. in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using fluid fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices or methods
    • F24H9/2007Arrangement or mounting of control or safety devices or methods for water heaters
    • F24H9/2035Arrangement or mounting of control or safety devices or methods for water heaters for heaters using fluid combustibles

Abstract

The invention discloses a water heater. The water heater comprises a shell, a water path system arranged in the shell, a wire for supplying power to the water heater, a current transformer for detecting the current of the wire, a safety protection valve used for controlling a water flow in the water path system to be on and off, and a controller connected with the wire and communicated with the current transformer and the safety protection valve. When the current transformer detects that the current difference of a null line and a firing line of the wire or the current value of a ground wire of the wire is larger than or equal to a preset value I, the controller controls the safety protection valve to cut off the water flow of the water path system. According to the water heater, electricity leakage can be sensitively and accurately judged, and therefore during electricity leakage, the water flow in the water path system can be reliability cut off, and happening of electric shock casualty accidents is prevented; and the detection precision of the current transformer is high, and work is stable.

Description

Water heater
Technical field
The invention belongs to technical field of water heaters, in particular to a kind of water heater.
Background technology
Water heater in correlation technique, installs the live wire caused lack of standardization and zero line due to water heater product itself, subscriber's line circuit and connects in anti-or the family of neighbor user electric leakage etc. and there will be leaky, poor stability.For this, occur in that some are provided with the water heater of anti-electricity wall, anti-electric brake, earth leakage protective etc., but these water heaters simply reduce electric current when electric leakage or cut off the electricity supply, and can not thoroughly solve electric shock problem, safety is not high.In correlation technique, some water heaters can make security protection action according to the charged situation of current, but the current detecting of current is inaccurate, and when current are charged, the safety of user has been subject to serious threat, there is room for improvement.
Summary of the invention
It is contemplated that one of technical problem solved at least to a certain extent in correlation technique.For this, it is an object of the invention to propose a kind of use safe water heater.
Water heater according to embodiments of the present invention, including: housing;Water circuit system, described water circuit system is located in described housing;For the wire powered to described water heater;For detecting the current transformer of described current in wire;For controlling the safety protective valve of the break-make of current in described water circuit system;Controller; described wire is connected with described controller; described controller respectively with described current transformer and described safety protective valve communication; when described current transformer detects the zero line of the described wire current value with the difference between current of live wire or the ground wire of described wire more than or equal to described predetermined value I, described controller controls described safety protective valve and cuts off the current of described water circuit system.
Water heater according to embodiments of the present invention, the current anomaly of wire is directly detected by current transformer, electric leakage can be judged sensitive and exactly, to be assuredly shut off the current in water circuit system when electric leakage, it is prevented that the generation of electric shock casualty accident, thus ensureing that user uses safety, do not affect the just conventional water of user, and current transformer not with water stream contacts, it is possible to prevent current transformer corrosion or covered by incrustation scale, the accuracy of detection of current transformer is high, working stability.
It addition, water heater according to the above embodiment of the present invention can also have following additional technical characteristic:
In some preferred embodiments of the present invention, described current transformer is configured to annular and the described wire described current transformer of traverse.
Further, described zero line is connected with described controller with described live wire, and described ground wire is connected with described housing.
In some preferred embodiments of the present invention, described predetermined value I meets: I >=5mA.
Further, described predetermined value I meets: I=7mA or I=12mA.
In some preferred embodiments of the present invention, described controller be set on the housing and with the display & control system of described water circuit system communication, the current detection value of described current transformer is shown by described display & control system.
In some preferred embodiments of the present invention, described safety protective valve is located on described water circuit system, and the water inlet end of contiguous described water circuit system or water side are arranged.
In some preferred embodiments of the present invention, described water heater is gas heater and described water circuit system includes: heat-exchanger rig;Water feed apparatus, described water feed apparatus connects with described heat-exchanger rig and exposes from described housing;Discharging device, described discharging device connects with described heat-exchanger rig and exposes from described housing;For the burner that the water in described heat-exchanger rig is heated;Controller for gas, described controller for gas connects with described burner and exposes from described housing, described controller and described controller for gas communication, and wherein, described safety protective valve is located between described water feed apparatus and described heat-exchanger rig.
Further, described water circuit system also includes: according to water temperature and hydraulic pressure regulating water flow the Flow-rate adjustment feedback device feeding back discharge, described Flow-rate adjustment feedback device be located between water feed apparatus and described heat-exchanger rig and with described controller communication, described controller controls the gas supply ratio of described combustion control system according to the feedback information of described Flow-rate adjustment feedback device.
Further, described gas heater also includes: for discharging the smoke evacuation system of flue gas that described burner produces, described smoke evacuation system is located in described housing and connect with the space outerpace of described housing, described controller and described smoke evacuation system communication.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from conjunction with will be apparent from easy to understand the accompanying drawings below description to embodiment, wherein:
Fig. 1 is the structural representation of water heater according to embodiments of the present invention.
Accompanying drawing labelling:
Water heater 1,
Housing 10,
Water circuit system 20, water inlet end 21, water side 22, water feed apparatus 23, heat-exchanger rig 24, discharging device 25, burner 26, controller for gas 27, Flow-rate adjustment feedback device 28,
Wire 30, zero line 31, live wire 32, ground wire 33,
Current transformer 40, safety protective valve 50, controller 60, smoke evacuation system 70,
Detailed description of the invention
Being described below in detail embodiments of the invention, 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 same or like function from start to finish.The embodiment described below with reference to accompanying drawing is illustrative of, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Water heater 1 according to embodiments of the present invention being described in detail referring to Fig. 1, described water heater 1 has advantage safe to use.
As it is shown in figure 1, water heater 1 according to embodiments of the present invention, including housing 10, water circuit system 20, wire 30, safety protective valve 50, controller 60 and current transformer 40.
Wherein, water circuit system 20 is located in housing 10, wire 30 is for powering to water heater 1, current transformer 40 is for detecting the electric current of wire 30, so that abnormal current is reacted, safety protective valve 50 is for controlling the break-make of current in water circuit system 20, wire 30 is connected with controller 60, controller 60 respectively with current transformer 40 and safety protective valve 50 communication, when current transformer 40 detects the zero line 31 of wire 30 and the difference between current of live wire 32 current value more than or equal to the ground wire 33 of predetermined value I or wire 30 more than or equal to predetermined value I, controller 60 controls safety protective valve 50 and cuts off the current of water circuit system 20.
In other words; water heater 1 is in normal operation; ground wire 33 is substantially not charged; zero line 31 is basically identical with the electric current of live wire 32; the magnetic flux that now current transformer 40 detects is substantially zeroed; may determine that water heater 1 is in safe work state, now safety protective valve 50 is in opening so that water circuit system 20 is in unimpeded state, is normally carried out supplying water.
When there is electric leakage accident; there is at least two situation: first leak conductance elsewhere is to water heater 1; now ground wire 33 is charged; the magnetic flux that current transformer 40 detects changes; when current transformer 40 detects the current value of ground wire 33 more than or equal to predetermined value I; controller 60 controls safety protective valve 50 and cuts off the current of water circuit system 20, it is prevented that user gets an electric shock;It two is wire 30 electric leakage itself; now zero line 31 is unequal with the electric current of live wire 32; the magnetic flux that current transformer 40 detects changes; when current transformer 40 detects the zero line 31 difference between current with live wire 32 more than or equal to predetermined value I, controller 60 controls safety protective valve 50 and cuts off the current of water circuit system 20.
Thus, when there is any of the above-described kind of drain conditions, water heater 1 all can be cut off the water supply rapidly, avoid user in the water utilizing processes such as bathing, after water on body shower, the resistance value instantaneous reduction of health, the electric current moment causing health increases, and personnel cannot break away from, and causes electric shock casualty accident.
Water heater 1 according to embodiments of the present invention, the current anomaly of wire 30 is directly detected by current transformer 40, electric leakage can be judged sensitive and exactly, to be assuredly shut off the current in water circuit system 20 when electric leakage, it is prevented that the generation of electric shock casualty accident, thus ensureing that user uses safety, do not affect the just conventional water of user, and current transformer 40 not with water stream contacts, it is possible to prevent current transformer 40 corrosion or covered by incrustation scale, the accuracy of detection of current transformer 40 is high, working stability.
In some preferred embodiments of the present invention, as it is shown in figure 1, current transformer 40 is it is so structured that annular, and wire 30 can pass current transformer 40.It is understood that under normal circumstances, the ground wire 33 of wire 30 is not charged, and the zero line 31 of wire 30 is equal and in opposite direction with the current value of live wire 32, and the magnetic flux that therefore current transformer 40 detects is substantially zeroed.When ground wire 33 is charged, the magnetic flux that current transformer 40 detects changes, and when wire 30 leaks electricity, zero line 31 is unequal with the current value of live wire 32, and current transformer 40 also can detect that magnetic flux changes, and now namely can determine whether that water heater 1 leaks electricity.Alternatively, current transformer 40 is it is so structured that annular.
Further, as it is shown in figure 1, zero line 31 can be connected with controller 60 with live wire 32 and be that controller 60 is powered, ground wire 33 can be connected with housing 10.
In some preferred embodiments of the present invention, predetermined value I meets: I >=5mA.Thus, it is possible to prevent controller 60 from judging by accident, ensure the normal operation of water heater 1.
In a concrete example of the present invention; predetermined value I meets: I=7mA; namely, when current transformer 40 detects the difference between current of zero line 31 and live wire 32 current value more than or equal to 7mA or ground wire 33 more than or equal to 7mA, controller 60 controls safety protective valve 50 and cuts off the current of water circuit system 20.
In another concrete example of the present invention; predetermined value I meets: I=12mA; namely, when current transformer 40 detects the difference between current of zero line 31 and live wire 32 current value more than or equal to 12mA or ground wire 33 more than or equal to 12mA, controller 60 controls safety protective valve 50 and cuts off the current of water circuit system 20.
In some optional embodiments of the present invention, as it is shown in figure 1, safety protective valve 50 is located on water circuit system 20, and safety protective valve 50 can be close to the water inlet end 21 of water circuit system 20 and arrange.
It is understandable that; when current transformer 40 detects zero line 31 and the difference between current of live wire 32 or the current value of ground wire 33 more than or equal to predetermined value I; controller 60 controls safety protective valve 50 and cuts out, thus the current of water inlet end 21 disconnect, water cannot enter water circuit system 20 from water inlet end 21.
In other optional embodiments of the present invention, safety protective valve 50 is located on water circuit system 20, and safety protective valve 50 can be close to the water side 22 of water circuit system 20 and arrange.
It is understandable that; when current transformer 40 detects zero line 31 and the difference between current of live wire 32 or the current value of ground wire 33 more than or equal to predetermined value I; controller 60 controls safety protective valve 50 and cuts out, thus the current of water side 22 disconnect, water cannot flow out from water side 22.
According to some embodiments of the present invention, controller 60 can be located on housing 10 and with the display & control system of water circuit system 20 communication, the current detection value of current transformer 40 is shown by display & control system, and the drain conditions user of such water heater 1 is visual, and user uses safer.Preferably, the on and off of safety protective valve 50 can also be shown by display & control system.
In the embodiment shown in 1, water heater 1 can be gas heater, and water circuit system 20 can include heat-exchanger rig 24, water feed apparatus 23, discharging device 25, burner 26 and controller for gas 27, water feed apparatus 23 connects with heat-exchanger rig 24, and water feed apparatus 23 exposes from housing 10 so that external inlet pipeline, discharging device 25 connects with heat-exchanger rig 24, and discharging device 25 exposes from housing 10 to pick out water lines, so constitutes the whole water route of water heater 1.Burner 26 is heated for the water in heat exchanging device 24, controller for gas 27 connects with burner 26, and controller for gas 27 exposes from housing 10 so that external fuel gas pipeline, controller 60 and controller for gas 27 communication, to control the gas supply amount of controller for gas 27.Wherein, safety protective valve 50 can be located between water feed apparatus 23 and heat-exchanger rig 24, and specifically, safety protective valve 50 may be mounted between water inlet end 21 and heat-exchanger rig 24.
Further, as shown in Figure 1, water circuit system 20 can also include Flow-rate adjustment feedback device 28, Flow-rate adjustment feedback device 28 can according to water temperature and hydraulic pressure regulating water flow and feed back discharge, Flow-rate adjustment feedback device 28 is located between water feed apparatus 23 and heat-exchanger rig 24, and Flow-rate adjustment feedback device 28 and controller 60 communication, controller 60 controls the gas supply ratio of controller for gas 27 according to the feedback information of Flow-rate adjustment feedback device 28.
Under normal circumstances; safety protective valve 50 is in normally open, and water enters water circuit system 20 from water feed apparatus 23, flows successively through Flow-rate adjustment feedback device 28, safety protective valve 50 and enters heat-exchanger rig 24; water after the heating of burned device 26, is flowed out by discharging device 25 in heat-exchanger rig 24.Wherein, controller 60 controls Flow-rate adjustment feedback device 28 and controller for gas 27 respectively according to the flow information that Flow-rate adjustment feedback device 28 feeds back, gas supply ratio with regulating water flow and controller for gas 27, thus controlling the burning load of burner 26, water outlet is made to reach ideal temperature.When current transformer 40 detects zero line 31 and the difference between current of live wire 32 or the current value of ground wire 33 more than or equal to predetermined value I; this signal is fed back to controller 60 by current transformer 40; controller 60 controls safety protective valve 50 and cuts out; so that the current in the whole water circuit system 20 of water heater 1 disconnect, reach the purpose of safeguard protection.
Alternatively, gas heater can also include smoke evacuation system 70, and smoke evacuation system 70 is for discharging the flue gas that burner 26 produces, and smoke evacuation system 70 is located in housing 10 and connects with the space outerpace of housing 10, controller 60 and smoke evacuation system 70 communication, thus controlling the emission behaviour of flue gas.
Certainly, the water heater 1 of the embodiment of the present invention is not limited to gas heater, it is also possible to for electric heater etc..
One concrete example of the embodiment of the present invention is described referring to Fig. 1.
As it is shown in figure 1, water heater 1 according to embodiments of the present invention can be gas heater, including housing 10, water circuit system 20, wire 30, safety protective valve 50, controller 60 and current transformer 40.
Water circuit system 20 is located in housing 10, and water circuit system 20 can include heat-exchanger rig 24, water feed apparatus 23, discharging device 25, burner 26, controller for gas 27, Flow-rate adjustment feedback device 28 and smoke evacuation system 70.
Safety protective valve 50 is located on water circuit system 20; for controlling the break-make of current in water circuit system 20; wire 30 is for powering to water heater 1; it is mainly used in powering to controller 60; wherein the zero line 31 of wire 30 can be connected with controller 60 with live wire 32, and the ground wire 33 of wire 30 can be connected with housing 10, and current transformer 40 is it is so structured that annular; and wire 30 can pass current transformer 40, current transformer 40 is for detecting the current anomaly of wire 30.
Controller 60 respectively with current transformer 40 and safety protective valve 50 communication; when current transformer 40 detects the zero line 31 of wire 30 and the difference between current of live wire 32 current value more than or equal to the ground wire 33 of predetermined value 12mA or wire 30 more than or equal to predetermined value 12mA, controller 60 controls safety protective valve 50 and cuts off the current of water circuit system 20.
In sum, water heater 1 according to embodiments of the present invention, current transformer 40 directly detect wire 30 current anomaly and not with water stream contacts, it is possible to sensitive and judge electric leakage, current transformer 40 not easily corrosion or covered by incrustation scale exactly, the accuracy of detection of current transformer 40 is high, working stability, it is possible to be assuredly shut off the current in water circuit system 20 when electric leakage, it is prevented that the generation of electric shock casualty accident, thus ensureing that user uses safety, do not affect the just conventional water of user.
In describing the invention, it will be appreciated that, term " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or hint indication device or element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, for instance two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or integral;Can be mechanically connected, it is also possible to be electrical connection;Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in the present invention as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in one or more embodiments in office or example in an appropriate manner.Additionally, when not conflicting, the feature of the different embodiments described in this specification or example and different embodiment or example can be carried out combining and combining by those skilled in the art.
Although above it has been shown and described that embodiments of the invention, it is understandable that, above-described embodiment is illustrative of, it is impossible to be interpreted as limitation of the present invention, and above-described embodiment can be changed, revises, replace and modification by those of ordinary skill in the art within the scope of the invention.

Claims (10)

1. a water heater, it is characterised in that including:
Housing;
Water circuit system, described water circuit system is located in described housing;
For the wire powered to described water heater;
For detecting the current transformer of described current in wire;
For controlling the safety protective valve of the break-make of current in described water circuit system;
Controller; described wire is connected with described controller; described controller respectively with described current transformer and described safety protective valve communication; when described current transformer detects the zero line of the described wire current value with the difference between current of live wire or the ground wire of described wire more than or equal to described predetermined value I, described controller controls described safety protective valve and cuts off the current of described water circuit system.
2. water heater according to claim 1, it is characterised in that described current transformer is configured to annular and the described wire described current transformer of traverse.
3. water heater according to claim 2, it is characterised in that described zero line is connected with described controller with described live wire, described ground wire is connected with described housing.
4. water heater according to claim 1, it is characterised in that described predetermined value I meets: I >=5mA.
5. water heater according to claim 4, it is characterised in that described predetermined value I meets: I=7mA or I=12mA.
6. water heater according to claim 1, it is characterised in that described controller be set on the housing and with the display & control system of described water circuit system communication, the current detection value of described current transformer is shown by described display & control system.
7. water heater according to claim 1, it is characterised in that described safety protective valve is located on described water circuit system, and it is close to water inlet end or the water side setting of described water circuit system.
8. the water heater according to any one of claim 1-7, it is characterised in that described water heater is gas heater and described water circuit system includes:
Heat-exchanger rig;
Water feed apparatus, described water feed apparatus connects with described heat-exchanger rig and exposes from described housing;
Discharging device, described discharging device connects with described heat-exchanger rig and exposes from described housing;
For the burner that the water in described heat-exchanger rig is heated;
Controller for gas, described controller for gas connects with described burner and exposes from described housing, described controller and described controller for gas communication;Wherein,
Described safety protective valve is located between described water feed apparatus and described heat-exchanger rig.
9. water heater according to claim 8, it is characterised in that described water circuit system also includes:
According to water temperature and hydraulic pressure regulating water flow the Flow-rate adjustment feedback device feeding back discharge, described Flow-rate adjustment feedback device be located between water feed apparatus and described heat-exchanger rig and with described controller communication, described controller controls the gas supply ratio of described combustion control system according to the feedback information of described Flow-rate adjustment feedback device.
10. water heater according to claim 8, it is characterised in that described gas heater also includes:
For discharging the smoke evacuation system of flue gas that described burner produces, described smoke evacuation system is located in described housing and connect with the space outerpace of described housing, described controller and described smoke evacuation system communication.
CN201610278596.0A 2016-04-29 2016-04-29 Water heater Pending CN105783273A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610278596.0A CN105783273A (en) 2016-04-29 2016-04-29 Water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610278596.0A CN105783273A (en) 2016-04-29 2016-04-29 Water heater

Publications (1)

Publication Number Publication Date
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108023330A (en) * 2017-12-12 2018-05-11 广东万家乐燃气具有限公司 Leakage protection method, apparatus and water heater
CN111189229A (en) * 2018-11-14 2020-05-22 芜湖美的厨卫电器制造有限公司 Control method of gas water heater and gas water heater
CN111189228A (en) * 2018-11-14 2020-05-22 芜湖美的厨卫电器制造有限公司 Control method of gas water heater and gas water heater
CN111189227A (en) * 2018-11-14 2020-05-22 芜湖美的厨卫电器制造有限公司 Control method of gas water heater and gas water heater

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201054492Y (en) * 2007-07-10 2008-04-30 艾欧史密斯(中国)热水器有限公司 A three-polarity break current leakage protection device with ground cable current/voltage detection
US20130139765A1 (en) * 2011-12-01 2013-06-06 Grand Mate Co., Ltd. Method of controlling combustion of gas appliance
CN105371475A (en) * 2015-12-23 2016-03-02 芜湖美的厨卫电器制造有限公司 Water heater
CN205641568U (en) * 2016-04-29 2016-10-12 芜湖美的厨卫电器制造有限公司 Water heater

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201054492Y (en) * 2007-07-10 2008-04-30 艾欧史密斯(中国)热水器有限公司 A three-polarity break current leakage protection device with ground cable current/voltage detection
US20130139765A1 (en) * 2011-12-01 2013-06-06 Grand Mate Co., Ltd. Method of controlling combustion of gas appliance
CN105371475A (en) * 2015-12-23 2016-03-02 芜湖美的厨卫电器制造有限公司 Water heater
CN205641568U (en) * 2016-04-29 2016-10-12 芜湖美的厨卫电器制造有限公司 Water heater

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108023330A (en) * 2017-12-12 2018-05-11 广东万家乐燃气具有限公司 Leakage protection method, apparatus and water heater
CN108023330B (en) * 2017-12-12 2019-11-08 广东万家乐燃气具有限公司 Leakage protection method, apparatus and water heater
CN111189229A (en) * 2018-11-14 2020-05-22 芜湖美的厨卫电器制造有限公司 Control method of gas water heater and gas water heater
CN111189228A (en) * 2018-11-14 2020-05-22 芜湖美的厨卫电器制造有限公司 Control method of gas water heater and gas water heater
CN111189227A (en) * 2018-11-14 2020-05-22 芜湖美的厨卫电器制造有限公司 Control method of gas water heater and gas water heater

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