CN115435384A - Control method and control device of electric heater and electric heater - Google Patents
Control method and control device of electric heater and electric heater Download PDFInfo
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- CN115435384A CN115435384A CN202210999538.2A CN202210999538A CN115435384A CN 115435384 A CN115435384 A CN 115435384A CN 202210999538 A CN202210999538 A CN 202210999538A CN 115435384 A CN115435384 A CN 115435384A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000001514 detection method Methods 0.000 claims abstract description 73
- 238000010438 heat treatment Methods 0.000 claims description 28
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D13/00—Electric heating systems
Abstract
The invention provides a control method and a control device of an electric heater and the electric heater, and relates to the technical field of electric appliances. The control method of the electric heater comprises the following operation steps: transmitting a detection signal to a preset area in the electric heater; acquiring a feedback signal fed back by the detection signal in the predetermined area; and judging whether a moving target exists in the preset area or not according to the feedback signal, and if so, enabling the electric heater to be in a heating-off state. Based on the technical scheme of the invention, the internal environment of the electric heater can be monitored, and the potential safety hazard caused by the fact that the electric heater still keeps working after foreign matters enter the electric heater is avoided.
Description
Technical Field
The invention relates to the technical field of electric appliances, in particular to a control method and a control device of an electric heater and the electric heater.
Background
The electric heater generally heats in a heat radiation manner or a hot air supply manner. The air outlet grid opening of electric heater is generally great, and the in-process of electric heater work, the state that the air outlet grid opening of electric heater kept opening, when the foreign matter enters into the electric heater inside through the grid opening, lead to the emergence of incident easily, when accident such as inflammable wastepaper or plastic bag entered into the electric heater inside, cause the conflagration easily, have the potential safety hazard.
Particularly, the skirting line type electric heater is a novel electric heater, generally adopts a thermal superconductor material as a basic heating unit, has the appearance of a skirting line form, can be used on a wall, can also be used beside a wall, and is popular in the market due to the fact that the electric heater does not occupy space and has good heating effect. The existing skirting line electric heater can also be used for placing clothes and the like at the air outlet for drying, but the clothes can enter the electric heater to damage the clothes, so that potential safety hazards exist.
Disclosure of Invention
Inside entering into the room heater to foreign matter among the above-mentioned prior art, lead to the emergence of incident easily, there is the problem of potential safety hazard, this application has provided a control method, controlling means and the electric heater of electric heater, can monitor the internal environment of electric heater, avoids the foreign matter to enter into the inside back electric heater of electric heater still to keep working and bring the potential safety hazard.
In a first aspect, the present invention provides a method for controlling an electric heater, including the following steps: transmitting a detection signal to a preset area in the electric heater; acquiring a feedback signal fed back by the detection signal in the preset area; and judging whether a moving target exists in the preset area or not according to the feedback signal, and if so, enabling the electric heater to be in a heating off state.
In one embodiment, the detection signal is transmitted to a predetermined area in the electric heater by a detection device, which is a micro-motion detection device. Through this embodiment, fine motion detection device launches radio signal or infrared signal, judges whether there is the foreign matter entering through the feedback signal that receives the reflection.
In one embodiment, the method for judging whether a moving target exists in the predetermined area according to the feedback signal comprises the following operation steps: converting the feedback signal into a difference frequency electric signal; and judging whether a moving target exists in the preset region or not according to the difference frequency electric signal. By the embodiment, the feedback signal reflected by the detection signal is converted into the difference frequency electric signal, so that the control module can conveniently calculate to judge whether the moving target exists in the preset area.
In one embodiment, before transmitting the detection signal into the predetermined area inside the electric heater, the method further comprises the following operation steps: opening an air outlet grid port communicated with the inner space of the electric heater; and judging whether the air outlet grid opening meets a closing condition or not. Through this embodiment, after the electric heater was gone up the electricity, through setting up the air-out bars mouth that can open and close automatically, when the electric heater was in unoperated state, the air-out bars mouth was in the normal close state, played the guard action to the electric heater inside, did not need user's independent operation to open air-out bars mouth, improved user's use and experienced.
In one embodiment, the determining whether the air outlet grid port satisfies the closing condition includes the following steps: judging whether the electric heater is in a running heating state within a first preset time length; if not, the air outlet grid opening of the electric heater is controlled to be closed. Through this embodiment, after the electric heater was gone up the electricity, air-out bars mouth was automatic to be opened, but when the user did not start the electric heater for a long time, air-out bars mouth self-closing avoided the electric heater not use and the foreign matter enters into the electric heater inside, influences the normal use of electric heater.
In one embodiment, the predetermined area is a space between a heat generating component in the electric heater and an air outlet grill communicated with an inner space of the electric heater. Through this embodiment, inject the predetermined area and be the inside of electric heater, avoid detecting outside the air-out bars mouth, influence the detection precision.
In one embodiment, when the presence of a moving object within the predetermined area is detected, an alarm signal is issued and a fault message is displayed. Through the implementation mode, the user is convenient to be reminded of processing the fault information in time.
In one embodiment, after determining that the electric heater is in the fault state, the method further includes the following operation steps: judging whether the fault state is released or not; if the fault state is not released, judging whether the fault state lasts for a second preset time, if so, stopping sending the alarm signal, and keeping displaying the fault information. Through the implementation mode, the alarm signal is automatically stopped, manual stopping is not needed, the fault information is still in the prompting state, and resources are saved.
In one embodiment, after determining that the electric heater is in the fault state, the method further includes the following operation steps: and judging whether the fault state is released or not, if not, judging whether the fault state lasts for a second preset time, and if so, closing the air outlet grid opening of the electric heater. Through this embodiment, not removing in the time is predetermine to the fault condition, self-closing air-out bars mouth avoids inside other foreign matters reentrant electric heater, to the inside guard action that plays of electric heater.
In one embodiment, after determining that the electric heater is in the fault state, the method further includes the following operation steps: and under the fault state, the starting instruction of the electric heater is not executed. Through this embodiment, when the trouble problem is not solved, operate any function button inefficacy, the electric heater can not normally work all, avoids the condition that the trouble was not relieved to start the electric heater, appears the potential safety hazard.
In a second aspect, the present invention provides an electric heater control device, including:
the detection module is used for transmitting a detection signal to a preset area in the electric heater;
and the control module is used for acquiring a feedback signal fed back by the detection signal in the preset area, judging whether a moving target exists in the preset area according to the feedback signal, and if so, enabling the electric heater to be in a heating off state.
In a third aspect, the present invention provides an electric heater, which includes a housing, wherein an air outlet grid opening capable of being opened and closed is arranged on the housing, a heating component is arranged in the housing, and a detection device and a control device electrically connected to the detection device are further arranged in the housing, the detection device being located between the heating component and the air outlet grid opening.
In one embodiment, a shielding structure is further disposed between the detection device and the air outlet grid, the shielding structure is used for limiting a range of a detection signal emitted by the detection device, and the shielding structure is used for limiting a detection range of the detection device inside the housing. Through this embodiment, avoid detection device to detect the space outside the predetermined area, guarantee to detect the accuracy.
The features mentioned above can be combined in various suitable ways or replaced by equivalent features as long as the object of the invention is achieved.
Compared with the prior art, the control method and the control device of the electric heater and the electric heater at least have the following beneficial effects:
whether there is the moving target in the internal environment that can real-time detection electric heater, when the moving target enters into the inside back of electric heater, in time control electric heater stop heating, avoid in the electric heater working process, and the foreign matter enters into the inside back of electric heater, the potential safety hazard appears in the contact of the heating part of foreign matter and electric heater.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
fig. 1 shows a schematic structural diagram of an electric heater of the present invention;
fig. 2 shows a partial schematic view of the inside of the electric heater of the present invention.
In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.
Reference numerals:
10-shell, 11-air outlet grid, 20-heating component, 30-detection device and 40-shielding structure.
Detailed Description
The invention will be further explained with reference to the drawings.
Example 1
The invention provides a control method of an electric heater, which comprises the following steps:
s10: and transmitting the detection signal to a preset area inside the electric heater.
Specifically, a wireless signal or an infrared signal or the like may be transmitted to the detection area by a detection device (e.g., a fine motion detection device). The preset area is a space between a heating part inside the electric heater and an air outlet grid port communicated with the inner space of the electric heater.
Further, still can set up burnt smell detection device in the electric heater inside for detect the smell state of electric heater internal environment, when detecting the inside burnt smell that appears of electric heater, also can confirm for the fault condition. Namely, in the working process of the electric heater, the burnt smell detection device also keeps the working state, detects the environmental state in real time and outputs corresponding data to the central control module; the central control module outputs corresponding control instructions to further control the corresponding functional modules to work or close. Firstly, presetting an odor threshold value H0 by a central control module; the odor value detected by the burnt odor detection device in real time is set as Hh, the Hh-H0 is compared with the Hh, when the Hh-H0 is larger than or equal to 0, the odor value is detected to be abnormal, the central control module outputs a corresponding logic level instruction according to the change, the electric heater is controlled to stop working, meanwhile, the buzzer module sends out a buzzing alarm prompt, and the controller displays an operation interface to display a corresponding fault code.
S20: and acquiring a feedback signal fed back by the detection signal in the preset area.
Specifically, the wireless signals or infrared signals reflected by all moving or weakly moving targets in the predetermined area can be received by the control module.
S30: and judging whether a moving target exists in the preset area or not according to the feedback signal, and if so, enabling the electric heater to be in a heating off state.
Specifically, the control module internally processes and converts the differential frequency electric signal, and analyzes whether a micro-motion target or a motion target exists in the region according to an internal algorithm. The difference frequency electric signal is detected time difference, speed difference, or angle area size, and belongs to specific algorithm processing in the difference frequency electric signal, which is not specific. When the electric heater normally works, there is not the motion target inside the electric heater, and the foreign matter enters into the inside top-down removal that is of electric heater, after detecting that the electric heater is inside to have the motion target, the control electric heater in time stops the heating, and the part that generates heat after avoiding the contact of the part that generates heat of foreign matter and electric heater still is in operating condition and brings the potential safety hazard.
Example 2
The invention provides a control method of an electric heater, which comprises the following steps:
s10: after the electric heater is started, the air outlet grid opening communicated with the inner space of the electric heater is opened, and whether the air outlet grid opening meets the closing condition or not is judged.
Specifically, whether the air outlet grid port meets the closing condition or not is judged, and the method comprises the following substeps:
s11: judging whether the electric heater is in a running heating state within a first preset time length; if not, the air outlet grid opening of the electric heater is controlled to be closed.
S20: the micro-motion detection device transmits a detection signal to a preset area in the electric heater.
S30: and the control module acquires a feedback signal fed back by the detection signal in the preset area and judges whether a moving target exists in the preset area or not according to the feedback signal.
Specifically, step S30 includes the following sub-steps:
s31: the control module converts the feedback signal into a difference frequency electric signal;
and the control module judges whether a moving target exists in the preset area or not according to the difference frequency electric signal.
S40: and when the moving target exists in the preset area, determining that the electric heater is in a fault state, and enabling the electric heater to be in a heating off state.
S50: and after the fault state is determined, detecting whether a moving target exists in a preset area in the electric heater again, and if the moving target is detected, controlling to close the air outlet grid port.
Specifically, after the fault state is determined, whether a moving target still exists in a preset area in the electric heater is detected in real time, and if the moving target exists, the air outlet grid port is controlled to be closed immediately; after the fault state is determined, whether a moving target still exists in a preset area in the heater or not is detected within a preset time, and if the moving target exists, the air outlet grid port is controlled to be closed immediately. Namely, after confirming the fault state, if still detect that there is the foreign matter to enter into the electric heater inside, the air-out bars mouth of control electric heater in time closes, avoids inside a plurality of moving objects enter into the electric heater in addition, plays the effect of protection to the electric heater is inside.
Example 3
The invention provides a control method of an electric heater, which comprises the following steps:
s10: after the electric heater is started, the air outlet grid opening communicated with the inner space of the electric heater is opened, and whether the air outlet grid opening meets the closing condition or not is judged.
S20: judging whether the electric heater is in a running heating state within a first preset time length; if the electric heater is not in the state of operation heating within the first preset time, the air outlet grid opening of the electric heater is controlled to be closed.
Specifically, after the electric heater was gone up the electricity, air-out bars mouth is automatic to be opened, but when the part that generates heat of electric heater still did not start in first predetermined duration, air-out bars mouth self-closing avoided the electric heater not use and the foreign matter enters into inside the electric heater, influences the normal use of electric heater.
S30: the micro-motion detection device transmits a detection signal to a preset area in the electric heater.
S40: and the control module acquires a feedback signal fed back by the detection signal in the preset area and judges whether a moving target exists in the preset area or not according to the feedback signal.
And if the moving target exists in the preset area, determining that the electric heater is in a fault state, and enabling the electric heater to be in a heating off state. And sending an alarm signal and displaying fault information to remind a user to process the fault information in time, so that the electric heater is in a heating-off state, and a starting instruction of the electric heater is shielded.
Specifically, the state of making the electric heater in heating off includes two situations: the first condition is that after the electric heater is powered on, the air outlet grid port is opened, when the electric heater is not started for heating, foreign matters are detected to enter the electric heater, and the heating of the electric heater is controlled to be kept in a closed state; another kind of condition is for after the electric heater is gone up the electricity, and the air-out bars mouth is opened, starts the electric heater heating back, and it has the foreign matter to enter into the electric heater inside to detect again, controls the electric heater stop heating this moment.
Furthermore, the alarm information is that a buzzer module sends out a buzzing alarm, and a display interface of the shell displays a corresponding fault code prompt, so that a user can conveniently and quickly lock abnormal problems and perform corresponding fault maintenance operation. When the fault problem is not solved, any function button is operated to be invalid, the electric heater cannot work normally, and the electric heater is prevented from being started under the condition that the fault is not relieved, so that potential safety hazards are caused.
It should be further explained that the electric heater has a power-off memory function, and when the fault problem is not solved but power is suddenly cut off, the corresponding fault code is still displayed by reappearing power-on until the fault problem is solved and the normal state is recovered.
S50: and judging whether the fault state is removed, if the fault state is not removed after a second preset time, stopping sending an alarm signal, keeping displaying fault information, and automatically closing the air outlet grid port. The alarm signal automatically stops, manual stopping is not needed, the fault information is still in a prompting state, and resources are saved. The air outlet grid opening is automatically closed, so that other foreign matters are prevented from entering the electric heater again, and the inside of the electric heater is protected.
Example 4
The invention provides a control device of an electric heater, comprising:
the detection module is used for transmitting a detection signal to a preset area in the electric heater;
and the control module is used for acquiring a feedback signal fed back by the detection signal in the preset area, judging whether a moving target exists in the preset area according to the feedback signal, and if so, enabling the electric heater to be in a heating off state.
Specifically, the detection module is mainly used for detecting whether there is the moving target body in vertical direction, according to the difference frequency signal of telecommunication that detects the feedback, confirms whether the target object that detects exists, whether detect promptly that whether there is the foreign matter to enter into inside the electric heater.
Example 5
The invention provides an electric heater, which comprises a shell 10, wherein an air outlet grid port 11 capable of being opened and closed is arranged on the shell 10, a heating part 20 is arranged in the shell 10, a detection device 30 positioned between the heating part 20 and the air outlet grid port 11 and a control device electrically connected with the detection device 30 are also arranged in the shell 10. Further, the heat generating component 20 is located at a lower portion in the housing 10, and the detecting device 30 is located above the heat generating component 20.
Specifically, the working process is as follows: when the electric heater is opened, the micro-motion detection device also starts to detect the environmental state in real time: when no foreign object enters, the data of the detection module is unchanged, and the electric heater works normally; when a foreign matter enters the electric heater, the data of the detection device 30 changes and is transmitted to the control module, the control module outputs a corresponding logic level instruction according to the received change parameter value, the electric heater is controlled to stop heating, meanwhile, the buzzer module sends out a buzzing alarm prompt, and the controller displays an operation interface to display a corresponding fault code.
Further, the air outlet 11 is a louver grating, and the louver grating includes a fan blade, a rotating shaft, and a connecting rod device. The rotating shaft is connected with a driving motor, and the driving motor is electrically connected with the central control module. When a power switch of the electric heater is turned on, the synchronous central control module sends a corresponding logic command to the driving motor, the driving motor rotates forwards to drive a certain rotating shaft to rotate, and all the rotating shafts are driven to rotate under the action of the connecting rod device, so that the blades of the louver fan are turned on. Correspondingly, when the electric heater is turned off, the synchronous central control module sends out a corresponding logic command to the driving motor, the driving motor rotates reversely to drive the rotating shaft to move reversely, and therefore blades of the louver window are closed. Through setting up air-out bars mouth 11 that can automatic start and stop, when the electric heater was in unoperated state, air-out bars mouth 11 was in the normal close state, played the guard action to the electric heater inside. The air outlet grid port 11 is automatically opened, the air outlet grid port 11 does not need to be independently operated by a user, and the use experience of the user is improved.
Example 6
The present embodiment is further optimized on the basis of embodiment 4 as follows:
a shielding structure 40 is further disposed between the detection device 30 and the air outlet grid 11, and the shielding structure 40 is used for limiting the detection range of the detection device 30 inside the housing 10. The range of the detection signal is prevented from covering the area of the air outlet grating port 11. The space outside the predetermined area is prevented from being detected by the detection device 30, and the detection accuracy is ensured.
Specifically, as shown in fig. 2, an angle α in the diagram is a detection range, the detection device 30 is disposed on the inner wall of the casing 10, and the shielding structure 40 is disposed, so that the signal emitted by the detection device 30 is not emitted to the air outlet grill 11, and the detection accuracy of the detection device 30 is prevented from being affected by the air outlet grill 11 and the clothes to be dried and the like placed at the air outlet grill 11, and the condition of erroneous judgment is avoided. Therefore, only whether foreign matters enter the ground heater or not is detected, and therefore when the air outlet grid opening 11 is opened, objects (such as shoe drying supports and the like) above the horizontal plane of the air outlet grid opening 11 cannot be identified by mistake.
Furthermore, a plurality of micro-motion detection devices can be arranged inside the electric heater, so that dead angles in detection are avoided.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that various dependent claims and the features described herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (13)
1. The control method of the electric heater is characterized by comprising the following operation steps of:
transmitting a detection signal to a preset area in the electric heater;
acquiring a feedback signal fed back by the detection signal in the preset area;
and judging whether a moving target exists in the preset area or not according to the feedback signal, and if so, enabling the electric heater to be in a heating-off state.
2. The control method of the electric heater as claimed in claim 1, wherein the detection signal is transmitted to a predetermined area in the electric heater by a detection device, and the detection device is a micro-motion detection device.
3. The control method of the electric heater according to claim 1 or 2, wherein the step of determining whether a moving object exists in the predetermined area according to the feedback signal comprises the following steps:
converting the feedback signal into a difference frequency electric signal;
and judging whether a moving target exists in the preset region or not according to the difference frequency electric signal.
4. The control method of the electric heater as claimed in claim 1 or 2, further comprising the following steps before transmitting the detection signal to the predetermined area inside the electric heater:
opening an air outlet grid port communicated with the inner space of the electric heater;
and judging whether the air outlet grid opening meets a closing condition or not.
5. The control method of the electric heater according to claim 4, wherein the step of judging whether the air outlet grid port satisfies the closing condition includes the following steps:
judging whether the electric heater is in an operating heating state within a first preset time period; if not, the air outlet grid port of the electric heater is controlled to be closed.
6. The method of claim 1 or 2, wherein the predetermined area is a space between a heat generating component in the electric heater and an air outlet grill port communicated with an inner space of the electric heater.
7. The control method of the electric heater of claim 1 or 2, further comprising the following steps of:
and when detecting that the moving target exists in the preset area, determining that the electric heater is in a fault state, sending an alarm signal and displaying fault information.
8. The control method of the electric heater according to claim 7, wherein after determining that the electric heater is in the fault state, the method further comprises the following steps:
judging whether the fault state is released or not; if not, judging whether the fault state lasts for a second preset time length;
and if the fault state lasts for a second preset time, stopping sending the alarm signal and keeping displaying the fault information.
9. The control method of the electric heater according to claim 7, wherein after determining that the electric heater is in the fault state, the method further comprises the following steps:
judging whether the fault state is released or not, and if not, judging whether the fault state lasts for a second preset time length or not;
and if the fault state lasts for a second preset time, closing an air outlet grid opening of the electric heater.
10. The control method of the electric heater according to claim 7, wherein after determining that the electric heater is in the fault state, the method further comprises the following steps:
and under the fault state, the starting instruction of the electric heater is not executed.
11. The utility model provides an electric heater controlling means which characterized in that includes:
the detection module is used for transmitting a detection signal to a preset area in the electric heater;
and the control module is used for acquiring a feedback signal fed back by the detection signal in the preset area, judging whether a moving target exists in the preset area according to the feedback signal, and if so, enabling the electric heater to be in a heating-off state.
12. The utility model provides an electric heater, its characterized in that, includes the casing, be provided with the air-out bars mouth that can open and close on the casing, be provided with the part that generates heat in the casing, still be provided with in the casing and be located the part that generates heat with detection device between the air-out bars mouth and with the controlling means that detection device electrical property links to each other.
13. The electric heater according to claim 12, wherein a shielding structure is further disposed between the detecting device and the air outlet, and the shielding structure is configured to limit a detection range of the detecting device within the housing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210999538.2A CN115435384A (en) | 2022-08-19 | 2022-08-19 | Control method and control device of electric heater and electric heater |
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| CN202210999538.2A CN115435384A (en) | 2022-08-19 | 2022-08-19 | Control method and control device of electric heater and electric heater |
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| CN203869164U (en) * | 2014-04-28 | 2014-10-08 | 广东美的集团芜湖制冷设备有限公司 | Intelligent air conditioner |
| CN104880877A (en) * | 2015-06-18 | 2015-09-02 | 京东方科技集团股份有限公司 | Array substrate and manufacturing method thereof, testing method thereof |
| WO2019076133A1 (en) * | 2017-10-19 | 2019-04-25 | 格力电器（武汉）有限公司 | Electric heater, control method and device therefor, storage medium, and processor |
| CN110145792A (en) * | 2019-06-25 | 2019-08-20 | 珠海格力电器股份有限公司 | The electric heater of belt switch plate |
| CN110160119A (en) * | 2019-06-25 | 2019-08-23 | 珠海格力电器股份有限公司 | The electric heater of belt switch plate |
| CN110173739A (en) * | 2019-06-25 | 2019-08-27 | 珠海格力电器股份有限公司 | Electric heater |
| CN110986154A (en) * | 2019-12-03 | 2020-04-10 | 珠海格力电器股份有限公司 | Electric heater control method and device, storage medium and electric heater |
| CN215863683U (en) * | 2021-09-07 | 2022-02-18 | 深圳市锐舞数码科技有限公司 | Skirting line heater |
| CN216744954U (en) * | 2021-10-12 | 2022-06-14 | 青岛海尔空调器有限总公司 | Warm-air drier |
| CN216557339U (en) * | 2021-12-07 | 2022-05-17 | 宁波先锋电器制造有限公司 | Skirting line heater with swinging page |
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