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CN104949323A - Electric water heater and control method thereof - Google Patents

Electric water heater and control method thereof Download PDF

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Publication number
CN104949323A
CN104949323A CN201510358468.2A CN201510358468A CN104949323A CN 104949323 A CN104949323 A CN 104949323A CN 201510358468 A CN201510358468 A CN 201510358468A CN 104949323 A CN104949323 A CN 104949323A
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China
Prior art keywords
temperature
thermal circuit
circuit beraker
heater
inner bag
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Granted
Application number
CN201510358468.2A
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Chinese (zh)
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CN104949323B (en
Inventor
彭武龙
王明
刘伟君
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 Smart Kitchen Appliance Manufacturing Co Ltd
Original Assignee
Midea Group Co Ltd
Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
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Priority to CN201510358468.2A priority Critical patent/CN104949323B/en
Publication of CN104949323A publication Critical patent/CN104949323A/en
Application granted granted Critical
Publication of CN104949323B publication Critical patent/CN104949323B/en
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Abstract

The invention discloses an electric water heater ad a control method thereof. The electric water heater comprises a shell, an inner liner, a heater, a thermal circuit breaker, a first temperature sensor, a second temperature sensor and a control module. The inner liner is arranged in the shell, and a water storage cavity is defined in the inner liner. The heater is used for heating water stored in the inner liner. One end of the thermal circuit breaker is connected with an external power source. The first temperature sensor is used for detecting the temperature of the thermal circuit breaker. The second temperature sensor is used for detecting the temperature of water in the inner liner. The control module is connected with the other end of the thermal circuit breaker, the heater, the first temperature sensor and the second temperature sensor. The control module controls the heater whether to conduct heating work or not according to the temperature of the thermal circuit breaker and the temperature of the water in the inner liner. According to the embodiment of the electric water heater and the control method thereof, the heater can be controlled according to the detected temperature of the thermal circuit breaker and the temperature of the water in the inner liner, the thermal circuit breaker is protected effectively, the thermal circuit breaker is prevented from aging, and the service life is prolonged.

Description

Electric heater and control method thereof
Technical field
The present invention relates to technical field of electric appliances, particularly relate to a kind of electric heater and control method thereof.
Background technology
Electric heater is the one of water heater, heats as the energy mainly through electricity to water.Electric heater is divided into storage-type, Instant heating type, fast heating type three kinds by the large I of heating power.At present, in storage-type electric water heater, be provided with thermal circuit beraker, when thermal circuit beraker exceedes uniform temperature, meeting disconnecting circuit, thus the effect playing the parts of protection electric heater.
But circuit, in order to protect the parts of thermoelectricity hydrophone, disconnects, electric heater can be caused to quit work by thermal circuit beraker, thus make troubles to the use of user, and overtemperature protection frequently, easily make thermal circuit beraker quick aging, reduce service life.
Summary of the invention
The present invention is intended to solve the problems of the technologies described above at least to a certain extent.
For this reason, the present invention needs to provide a kind of electric heater, and this electric heater can protect thermal circuit beraker effectively, avoids thermal circuit beraker aging, increases the service life.
In addition, the present invention also needs the control method providing a kind of electric heater.
For at least one in solving the problems of the technologies described above, embodiment proposes a kind of electric heater according to a first aspect of the present invention, comprising: housing; Inner bag, described inner bag is arranged in described housing, is limited with water storage chamber in described inner bag; Heater, described heater is used for heating the water storage in described inner bag; Thermal circuit beraker, one end of described thermal circuit beraker is connected with external power supply; First temperature sensor, described first temperature sensor is for detecting the temperature of described thermal circuit beraker; Second temperature sensor, described second temperature sensor is for detecting the water temperature in described inner bag; Control module, described control module is connected with described second temperature sensor with the other end of described thermal circuit beraker, described heater, described first temperature sensor respectively, and described control module controls described heater according to the water temperature in the temperature of described thermal circuit beraker and described inner bag and whether carries out heating work.
The electric heater of the embodiment of the present invention; the water temperature in the temperature of thermal circuit beraker and inner bag is detected by the first temperature sensor of arranging in electric heater and the second temperature sensor; and according to the said temperature obtained and water temperature, heater is controlled; effectively can protect thermal circuit beraker; avoid thermal circuit beraker quick aging, extend service life.
Second aspect present invention embodiment provides a kind of control method of electric heater, comprising: the temperature detecting described thermal circuit beraker, and detects the water temperature in described inner bag; Control described heater according to the water temperature in the temperature of described thermal circuit beraker and described inner bag and whether carry out heating work.
The control method of the electric heater of the embodiment of the present invention; by detecting the water temperature in the temperature of thermal circuit beraker and inner bag, and according to acquisition said temperature and water temperature, heater being controlled, effectively can protect thermal circuit beraker; avoid thermal circuit beraker quick aging, extend service life.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of electric heater according to an embodiment of the invention.
Fig. 2 is the flow chart one of the control method of electric heater according to an embodiment of the invention.
Fig. 3 is the flowchart 2 of the control method of electric heater according to an embodiment of the invention.
Fig. 4 is the flow chart 3 of the control method of electric heater according to an embodiment of the invention.
Detailed description of the invention
Be 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 element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Below with reference to the accompanying drawings the control method of electric heater according to the embodiment of the present invention and electric heater is described.
Fig. 1 is the structural representation of electric heater according to an embodiment of the invention.
As shown in Figure 1, this electric heater, comprising: housing 100, inner bag 200, heater 300, thermal circuit beraker 400, first temperature sensor 500, second temperature sensor 600 and control module 700.
Wherein, inner bag 200 is arranged in housing 100, and is limited with water storage chamber in inner bag 200.
Heater 300 is for heating the water storage in inner bag 200.
One end of thermal circuit beraker 400 is connected with external power supply.
First temperature sensor 500 is for detecting the temperature of thermal circuit beraker 400.
Second temperature sensor 600 is for detecting the water temperature in inner bag 200.
Control module 700 is connected with the second temperature sensor 600 with the other end of thermal circuit beraker 400, heater 300, first temperature sensor 500 respectively.Wherein, the position of the first temperature sensor 500 and the second temperature sensor 600, not shown in FIG.Whether the water temperature control heater 300 in the inner bag 200 that the temperature of the thermal circuit beraker 400 that control module 700 can detect according to the first temperature sensor 500 and the second temperature sensor 600 detect carries out heating work.
When the water temperature in inner bag 200 is less than design temperature, control module 700 can start heating work by control heater 300, and when the temperature of thermal circuit beraker 400 is more than or equal to the first temperature threshold, control module 700 sends safeguards information warning, and control heater 300 stops heating, until the temperature of thermal circuit beraker 400 is less than the first temperature threshold and presets the temperature gap recovered between return difference.Wherein, the first temperature threshold is 80-100 DEG C, and presetting recovery return difference is 5-20 DEG C.
After control heater 300 starts heating work, control module 700 also can obtain the temperature rise rate of thermal circuit beraker 400 according to the temperature of thermal circuit beraker 400, and it is pre-conditioned to judge whether thermal circuit beraker 400 meets.Wherein, if the temperature rise rate of thermal circuit beraker 400 is more than or equal to default temperature rise rate alarm threshold value, the temperature of thermal circuit beraker 400 is more than or equal to the second temperature threshold and the difference of water temperature in the temperature of thermal circuit beraker 400 and inner bag 200 is more than or equal to the default temperature difference, it is pre-conditioned that control module 700 can judge that thermal circuit beraker 400 meets, and send the life-span early warning information of thermal circuit beraker 400.The temperature rise rate of thermal circuit beraker 400 is too fast, and illustrate that thermal circuit beraker 400 internal components is aging, close to working life, if worked on, then will damage, therefore control module 700 can send life-span early warning information again, and prompting user thermal circuit beraker 400 is about to damage.If it is pre-conditioned that control module 700 judges that thermal circuit beraker 400 does not meet, and when the temperature of thermal circuit beraker 400 is more than or equal to the first temperature threshold, control module 700 sends safeguards information warning.Wherein, the first temperature threshold is greater than the second temperature threshold.Particularly, the first temperature threshold is 80-100 DEG C, and the second temperature threshold is 60-80 DEG C, and the default temperature difference is 10-20 DEG C, and presetting recovery return difference is 5-20 DEG C.
Control module 700 is sending life-span early warning information or after safeguarding information warning, also can stop heating by control heater 300, until the temperature of thermal circuit beraker 400 is less than the first temperature threshold and presets the temperature gap recovered between return difference.
The electric heater of the embodiment of the present invention; the water temperature in the temperature of thermal circuit beraker and inner bag is detected by the first temperature sensor of arranging in electric heater and the second temperature sensor; and according to the said temperature obtained and water temperature, heater is controlled; effectively can protect thermal circuit beraker; avoid thermal circuit beraker quick aging, extend service life.
For achieving the above object, the present invention also proposes a kind of control method of electric heater.
Fig. 2 is the flow chart one of the control method of electric heater according to an embodiment of the invention.
As shown in Figure 2, the control method of this electric heater, comprises the following steps:
S201, detects the temperature of thermal circuit beraker, and detects the water temperature in inner bag.
In an embodiment of the present invention, electric heater can comprise housing, the inner bag be arranged in housing, the heater for heating the water storage in inner bag, the thermal circuit beraker be connected with external power supply, the first temperature sensor, the second temperature sensor and control module.
Particularly, detect the temperature of thermal circuit beraker by the first temperature sensor, detect the water temperature in inner bag by the second temperature sensor.
Whether S202, carry out heating work according to the water temperature control heater in the temperature of thermal circuit beraker and inner bag.
In addition, the control method of the electric heater of the embodiment of the present invention, as shown in Figure 3, also can comprise step S203 and S204.
S203, when the water temperature in inner bag is less than design temperature, control heater starts heating work.
S204, when the temperature of thermal circuit beraker is more than or equal to the first temperature threshold, sends and safeguards information warning, and control heater stops heating, until the temperature of thermal circuit beraker is less than the first temperature threshold and presets the temperature gap recovered between return difference.
Wherein, the first temperature threshold is 80-100 DEG C, and presetting recovery return difference is 5-20 DEG C.
For example, when the water temperature in inner bag is less than 30 DEG C, heating can be started by control heater.When the temperature of thermal circuit beraker is more than or equal to 80 DEG C, sends and safeguard information warning.Now, heating can be stopped, until the temperature of thermal circuit beraker is less than 60 DEG C by control heater.(the first temperature threshold is 80 DEG C, and presetting recovery return difference is 20 DEG C, and the first temperature threshold and the default temperature gap recovered between return difference are 60 DEG C.)
In addition, the control method of the electric heater of the embodiment of the present invention, as shown in Figure 4, also can comprise step S205, S206, S207, S208.
S205, after control heater starts heating work, obtain the temperature rise rate of thermal circuit beraker, and it is pre-conditioned to judge whether thermal circuit beraker meets according to the temperature of thermal circuit beraker.
S206, when meeting pre-conditioned, sends the life-span early warning information of thermal circuit beraker.
When the temperature rise rate of thermal circuit beraker is more than or equal to default temperature rise rate alarm threshold value, when the temperature of thermal circuit beraker is more than or equal to the second temperature threshold, when the difference of the water temperature in the temperature of thermal circuit beraker and inner bag is more than or equal to the default temperature difference, when meeting above-mentioned three conditions simultaneously, can judge that thermal circuit beraker meets pre-conditioned, and when meeting pre-conditioned, send the life-span early warning information of thermal circuit beraker.The temperature rise rate of thermal circuit beraker is too fast, illustrates that thermal circuit beraker internal components is aging, and close to working life, if worked on, then will damage, therefore control module can send life-span early warning information again, and prompting user thermal circuit beraker is about to damage.
Wherein, the first temperature threshold is greater than the second temperature threshold.Particularly, the first temperature threshold is 80-100 DEG C, and the second temperature threshold is 60-80 DEG C, and the default temperature difference is 10-20 DEG C, and presetting recovery return difference is 5-20 DEG C.
For example, the temperature rise rate of thermal circuit beraker 20 DEG C/min, be more than or equal to default temperature rise rate alarm threshold value 15 DEG C/min, and the temperature of thermal circuit beraker is more than or equal to 60 DEG C, when the difference 20 DEG C of the water temperature simultaneously in the temperature of thermal circuit beraker and inner bag is more than or equal to the default temperature difference 10 DEG C, the life-span early warning information of thermal circuit beraker can be sent.
S207, when not meeting pre-conditioned, and when the temperature of thermal circuit beraker is more than or equal to the first temperature threshold, sends and safeguards information warning.
If do not meet pre-conditioned, then when the temperature of thermal circuit beraker is more than or equal to the first temperature threshold as 80 DEG C, can sends and safeguard information warning.
S208, is sending life-span early warning information or after safeguarding information warning, and control heater stops heating, until the temperature of thermal circuit beraker is less than the first temperature threshold and presets the temperature gap recovered between return difference.
The control method of the electric heater of the embodiment of the present invention; by detecting the water temperature in the temperature of thermal circuit beraker and inner bag, and according to acquisition said temperature and water temperature, heater being controlled, effectively can protect thermal circuit beraker; avoid thermal circuit beraker quick aging, extend service life.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as 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, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood 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 only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.

Claims (10)

1. an electric heater, is characterized in that, comprising:
Housing;
Inner bag, described inner bag is arranged in described housing, is limited with water storage chamber in described inner bag;
Heater, described heater is used for heating the water storage in described inner bag;
Thermal circuit beraker, one end of described thermal circuit beraker is connected with external power supply;
First temperature sensor, described first temperature sensor is for detecting the temperature of described thermal circuit beraker;
Second temperature sensor, described second temperature sensor is for detecting the water temperature in described inner bag;
Control module, described control module is connected with described second temperature sensor with the other end of described thermal circuit beraker, described heater, described first temperature sensor respectively, and described control module controls described heater according to the water temperature in the temperature of described thermal circuit beraker and described inner bag and whether carries out heating work.
2. electric heater as claimed in claim 1, it is characterized in that, when the water temperature in described inner bag is less than design temperature, described control module controls described heater and starts heating work, and when the temperature of described thermal circuit beraker is more than or equal to the first temperature threshold, described control module sends safeguards information warning, and controls described heater stopping heating, until the temperature of described thermal circuit beraker is less than described first temperature threshold and presets the temperature gap recovered between return difference.
3. electric heater as claimed in claim 1, is characterized in that, after the described heater of control starts heating work, described control module also obtains the temperature rise rate of described thermal circuit beraker according to the temperature of described thermal circuit beraker, and it is pre-conditioned to judge whether described thermal circuit beraker meets, wherein
If the temperature rise rate of described thermal circuit beraker is more than or equal to default temperature rise rate alarm threshold value, the temperature of described thermal circuit beraker is more than or equal to the second temperature threshold and the difference of water temperature in the temperature of described thermal circuit beraker and described inner bag is more than or equal to the default temperature difference, it is described pre-conditioned that described control module then judges that described thermal circuit beraker meets, and send the life-span early warning information of described thermal circuit beraker;
If it is described pre-conditioned that described control module judges that described thermal circuit beraker does not meet, and when the temperature of described thermal circuit beraker is more than or equal to the first temperature threshold, described control module sends safeguards information warning, and wherein, described first temperature threshold is greater than described second temperature threshold.
4. electric heater as claimed in claim 3, it is characterized in that, described control module send described life-span early warning information or described safeguard information warning after, also control described heater and stop heating, until the temperature of described thermal circuit beraker is less than described first temperature threshold and presets the temperature gap recovered between return difference.
5. electric heater as claimed in claim 4, it is characterized in that, described first temperature threshold is 80-100 DEG C, and described second temperature threshold is 60-80 DEG C, and the described default temperature difference is 10-20 DEG C, and described default recovery return difference is 5-20 DEG C.
6. the control method of an electric heater, it is characterized in that, described electric heater comprises housing, the inner bag be arranged in described housing, for the heater heated the water storage in described inner bag, the thermal circuit beraker be connected with external power supply, described control method comprises the following steps:
Detect the temperature of described thermal circuit beraker, and detect the water temperature in described inner bag;
Control described heater according to the water temperature in the temperature of described thermal circuit beraker and described inner bag and whether carry out heating work.
7. the control method of electric heater as claimed in claim 6, it is characterized in that, when the water temperature in described inner bag is less than design temperature, control described heater and start heating work, and when the temperature of described thermal circuit beraker is more than or equal to the first temperature threshold, send and safeguard information warning, and control described heater stopping heating, until the temperature of described thermal circuit beraker is less than described first temperature threshold and presets the temperature gap recovered between return difference.
8. the control method of electric heater as claimed in claim 6, is characterized in that, after the described heater of control starts heating work, the temperature rise rate of described thermal circuit beraker is also obtained according to the temperature of described thermal circuit beraker, and it is pre-conditioned to judge whether described thermal circuit beraker meets, wherein
If the temperature rise rate of described thermal circuit beraker is more than or equal to default temperature rise rate alarm threshold value, the temperature of described thermal circuit beraker is more than or equal to the second temperature threshold and the difference of water temperature in the temperature of described thermal circuit beraker and described inner bag is more than or equal to the default temperature difference, then judge that described thermal circuit beraker meets described pre-conditioned, and send the life-span early warning information of described thermal circuit beraker;
If it is described pre-conditioned to judge that described thermal circuit beraker does not meet, and when the temperature of described thermal circuit beraker is more than or equal to the first temperature threshold, sends and safeguard information warning, wherein, described first temperature threshold is greater than described second temperature threshold.
9. the control method of electric heater as claimed in claim 8, it is characterized in that, send described life-span early warning information or described safeguard information warning after, also control described heater and stop heating, until the temperature of described thermal circuit beraker is less than described first temperature threshold and presets the temperature gap recovered between return difference.
10. the control method of electric heater as claimed in claim 9, it is characterized in that, described first temperature threshold is 80-100 DEG C, and described second temperature threshold is 60-80 DEG C, and the described default temperature difference is 10-20 DEG C, and described default recovery return difference is 5-20 DEG C.
CN201510358468.2A 2015-06-25 2015-06-25 Electric heater and its control method Active CN104949323B (en)

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CN104949323B CN104949323B (en) 2018-06-08

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107606800A (en) * 2017-10-10 2018-01-19 广东万家乐燃气具有限公司 A kind of control system of electric water heater with temperature sensor fault detection
CN111949053A (en) * 2019-05-17 2020-11-17 阿自倍尓株式会社 Temperature regulator and abnormality determination method
CN115164403A (en) * 2022-06-01 2022-10-11 海信(山东)厨卫有限公司 Water heater and control method thereof

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CN203301756U (en) * 2013-05-20 2013-11-20 广东美的制冷设备有限公司 Electric heater and overheating protection device thereof
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107606800A (en) * 2017-10-10 2018-01-19 广东万家乐燃气具有限公司 A kind of control system of electric water heater with temperature sensor fault detection
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CN115164403B (en) * 2022-06-01 2024-11-08 海信(山东)厨卫有限公司 Water heater and control method thereof

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Effective date of registration: 20230328

Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province

Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd.

Address before: 241009 Wan Chun East Road, East Wuhu economic and Technological Development Zone, Wuhu, Anhui

Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd.

Patentee before: MIDEA GROUP Co.,Ltd.