CN114808366B - Clothes treating apparatus - Google Patents
Clothes treating apparatus Download PDFInfo
- Publication number
- CN114808366B CN114808366B CN202210600152.XA CN202210600152A CN114808366B CN 114808366 B CN114808366 B CN 114808366B CN 202210600152 A CN202210600152 A CN 202210600152A CN 114808366 B CN114808366 B CN 114808366B
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- Prior art keywords
- door cover
- induction chip
- electric signal
- magnetic induction
- magnetic
- Prior art date
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- 230000006698 induction Effects 0.000 claims abstract description 59
- 230000001939 inductive effect Effects 0.000 claims abstract description 4
- 235000014676 Phragmites communis Nutrition 0.000 abstract description 24
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 9
- 244000273256 Phragmites communis Species 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/20—Parameters relating to constructional components, e.g. door sensors
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/40—Opening or locking status of doors
Abstract
The present application discloses a laundry treatment apparatus, comprising: the box body is provided with a clothes taking and placing opening; the door cover is movably connected to the box body and is used for opening or closing the clothes taking and placing opening; at least one magnetic element fixed on the door cover for generating a magnetic field; the workbench is fixed on the box body; and the magnetic induction chip is arranged on the workbench and is used for inducing a magnetic field and outputting an electric signal reflecting the state of the door cover. The application effectively avoids the related defects caused by the traditional reed switch, in addition, as the magnetic induction chip is arranged on the workbench, a larger installation space is not required to be reserved on the workbench, the arrangement requirements of the workbench with different shapes can be met, and as the traditional reed switch is omitted, the production line operation can be simplified, and the production line processing efficiency can be improved.
Description
Technical Field
The present application relates to the field of laundry treatment, and more particularly, to a laundry treatment apparatus.
Background
The clothes treating apparatus needs to be provided with a door for a user to insert and take out clothes, for example, the user opens the door to insert the clothes to be washed into the tub, closes the door to start the clothes treating apparatus, and opens the door after the clothes treating apparatus is operated to take out the washed clothes.
In the operation process of the clothes treatment equipment, the door cover is in a closed state, and if the door cover is opened abnormally, the rapidly rotating barrel body can possibly cause injury to a human body, so that safety accidents are caused. Based on this, in the related art, a reed switch (also referred to as a magnetic reed switch) for sensing whether the door cover is opened is often provided on the workbench, and based on the magnetic field of the magnet built in the reed switch, the intelligent detection of the opening state and the closing state of the door cover is further realized.
However, the reed switch is limited by the induction distance, and a reasonable installation space needs to be reserved at the set position of the workbench, so that the workbench is molded and solidified, the processing requirements of the different-molded workbench are difficult to meet, or the structural difference of the reed switch assembled by the different-molded workbench is large, and the processing efficiency of a production line is further affected; in addition, the reed switch is easy to damage and difficult to detect in the transportation process and the assembly process, so that the door cover detection function of the clothes treatment equipment is invalid.
Disclosure of Invention
In view of the above, the embodiment of the application provides a clothes treatment device, which aims to improve the processing efficiency of a production line and the reliability of a door cover detection function on the basis of meeting the processing requirements of work tables with different shapes.
The technical scheme of the embodiment of the application is realized as follows:
an embodiment of the present application provides a laundry treatment apparatus including:
the box body is provided with a clothes taking and placing opening;
the door cover is movably connected to the box body and is used for opening or closing the clothes taking and placing opening;
at least one magnetic element fixed on the door cover for generating a magnetic field;
the workbench is fixed on the box body;
the magnetic induction chip is arranged on the workbench and is used for inducing the magnetic field and outputting an electric signal reflecting the state of the door cover.
In some embodiments, the workbench comprises a control board for controlling the operation of the laundry treatment apparatus, and the magnetic induction chip is integrated on the control board.
In some embodiments, the door is hinged to the top end of the case, the free end of the door remote from the hinge is provided with the at least one magnetic element, and the control board is fixed to the case opposite to the free end of the door.
In some embodiments, when the door cover is covered on the box body, a distance between the magnetic induction chip and the at least one magnetic element is smaller than a set distance threshold.
In some embodiments, the output signal of the magnetic induction chip comprises a first electrical signal indicating that the door cover is in a closed state and a second electrical signal indicating that the door cover is in an open state; the magnetic induction chip outputs the first electric signal when the distance between the magnetic induction chip and the at least one magnetic element is smaller than the set distance threshold value, and outputs the second electric signal when the distance between the magnetic induction chip and the at least one magnetic element is larger than or equal to the set distance threshold value.
In some embodiments, the set distance threshold is 20 to 50 millimeters.
In some embodiments, the magnetic induction chip comprises: the control panel is provided with an interface which is respectively and electrically connected with the power supply terminal, the grounding terminal and the output terminal.
In some embodiments, the output terminal is electrically connected to an input interface of a microprocessor on the control board, which controls the operation of the laundry treatment apparatus based on an electrical signal output from the output terminal.
In some embodiments, the microprocessor controls the laundry treating apparatus to operate based on the electric signal output from the output terminal, including:
the microprocessor controls the normal operation of the clothes treatment equipment based on a first electric signal which is output by the output terminal and indicates that the door cover is in a closed state; or,
the microprocessor controls the clothes treatment equipment to stop running and/or outputs alarm information based on a second electric signal which is output by the output terminal and indicates that the door cover is in an open state.
In some embodiments, the at least one magnetic element is a permanent magnet.
According to the technical scheme provided by the embodiment of the application, the magnetic induction chip is arranged on the workbench, the magnetic field generated by at least one magnetic element on the door cover is sensed based on the magnetic induction chip, and the electric signal reflecting the state of the door cover is output, so that the related defects caused by the traditional reed switch are effectively avoided.
Drawings
FIG. 1 is a schematic top view of a laundry treating apparatus according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged partial schematic view at B in FIG. 2;
FIG. 4 is a schematic diagram of a terminal structure of a magnetic induction chip according to an embodiment of the present application;
fig. 5 is a schematic diagram of logic control performed by a microprocessor based on an electric signal output by a magnetic induction chip according to an embodiment of the present application.
Reference numerals illustrate:
10. a case; 20. a door cover; 21. a free end;
30. a magnetic element; 40. a work table;
50. a magnetic induction chip;
60. and (5) a control panel.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings and examples.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
An embodiment of the present application provides a laundry treating apparatus, as shown in fig. 1 to 3, including: the cabinet 10, the door 20, and the table 40 (also referred to as a console panel). The case 10 is provided with a laundry taking/putting port (not shown) for putting in and taking laundry by a user. The door 20 is movably connected to the case 10 for opening or closing the laundry access opening. The table 40 is fixed to the case 10. The laundry treating apparatus further includes: a magnetic induction chip 50 and at least one magnetic element 30, the at least one magnetic element 30 being fixed to the door cover 20 for generating a magnetic field; the magnetic induction chip 50 is disposed on the table 40, and is used for inducing a magnetic field generated by at least one magnetic element 30 and outputting an electric signal reflecting the state of the door 20.
It can be appreciated that, in the clothes treating apparatus according to the embodiment of the present application, the magnetic induction chip 50 is disposed on the workbench 40, and based on the magnetic induction chip 50 sensing the magnetic field generated by the at least one magnetic element 30 on the door cover 20 and outputting the electric signal reflecting the state of the door cover 20, the related defects caused by the conventional reed switch are effectively avoided, in addition, since the magnetic induction chip 50 disposed on the workbench 40 has a small volume, a large installation space is not required to be reserved on the workbench 40, the arrangement requirements of the workbench 40 with different shapes can be satisfied, and since the conventional reed switch is omitted, the production line operation can be simplified, and the production line machining efficiency can be improved.
The reed switch is an electric switch operated by sensing an applied magnetic field, and the basic mode is to seal two magnetic reeds in a glass tube, wherein the two magnetic reeds are overlapped but have a small gap in the middle. When an external magnetic field exists, namely, when the door cover 20 is in a closed state, the magnetic field acts to enable the two magnetic reeds to be contacted, so that a circuit is conducted; once the magnet is pulled away from the reed pipe, i.e., after the door 20 is opened by a set angle, the two magnetic reeds will return to the original position, thereby breaking the circuit. It can be appreciated that the reed switch is an electrical switch arranged in a power supply line, a reasonable installation space needs to be reserved on the workbench 40, and the arrangement requirement of the ultrathin workbench 40 is difficult to meet.
According to the clothes treatment equipment provided by the embodiment of the application, the magnetic induction chip 50 is arranged on the workbench 40, and based on the electric signal which is output by the magnetic induction chip 50 and reflects the state of the door cover 20, the intelligent detection of the state of the door cover 20 can be realized, so that the traditional reed switch can be omitted, and the defect that the detection function of the door cover 20 is invalid due to the damage of the internal structure of the reed switch is overcome; in addition, the traditional reed pipe is omitted, so that the production line operation can be simplified, the procedure of assembling the reed pipe and the reserved installation space on the workbench 40 is omitted, and the production line processing efficiency is improved; again, the magnetic induction chip 50 is disposed on the workbench 40, and can meet the arrangement requirements of the workbench 40 with different shapes due to the small size of the chip, for example, the arrangement requirements of the ultrathin workbench can be met.
Illustratively, the workstation 40 includes a control board 60 (also referred to as a main control board or a computer board) for controlling the operation of the laundry treating apparatus, and the magnetic induction chip 50 is integrated on the control board 60.
Illustratively, as shown in fig. 1 and 3, the door 20 is hinged to the top end of the case 10, the at least one magnetic element 30 is disposed on the door 20 at a free end 21 remote from the hinge position, and the control board 60 is fixed to the case 10 opposite to the free end 21 of the door 20.
It will be appreciated that the laundry access opening of the laundry treating apparatus is formed at the top of the cabinet 2, so that a user can conveniently take laundry, the door 20 is hinged to one side of the top end of the cabinet 2, and the user can pick up or put down the free end 21 of the door 20, thereby opening or closing the door 20. Since the magnetic element 30 is disposed at the free end 21 of the door 20 and the control board 60 is opposite to the free end 21 of the door 20, the distance between the magnetic element 30 and the magnetic induction chip 50 integrated on the control board 60 increases when the door 20 is opened, and the distance between the magnetic element 30 and the magnetic induction chip 50 returns to the initial distance when the door 20 is closed.
Illustratively, when the door 20 is closed onto the case 10, the distance between the magnetic induction chip 50 and the at least one magnetic element 30 is smaller than the set distance threshold.
For example, the door 20 may be provided with a plurality of magnetic elements 30, and the magnetic induction chip 50 and at least one magnetic element 30 may have a distance smaller than a set distance threshold, that is, an initial distance smaller than the set distance threshold, for example, the magnetic induction chip 50 may generate a high level signal when the door 20 is in a closed state; when the door 20 is opened, the distance between the magnetic induction chip 50 and each magnetic element 30 is greater than or equal to the set distance threshold, and the magnetic induction chip 50 generates a low level signal.
Illustratively, the at least one magnetic element 30 secured to the door 20 may be a permanent magnet, for example, one or more permanent magnets may be secured to the door 20 such that a magnetic field may be generated for induction by the magnetic induction chip 50.
Illustratively, the magnetic induction chip 50 is configured to output a first electrical signal indicating that the door 20 is in a closed state when the distance from the at least one magnetic element 30 is less than a set distance threshold value, and to output a second electrical signal indicating that the door 20 is in an open state when the distance from the at least one magnetic element 30 is greater than or equal to the set distance threshold value.
For example, the magnetic induction chip 50 may output a high level to indicate that the door 20 is in a closed state when the minimum distance between the permanent magnets on the door 20 is smaller than a set distance threshold; the magnetic induction chip 50 may output a low level to indicate that the door 20 is in an open state when the minimum distance of the permanent magnets on the door 20 is greater than or equal to a set distance threshold. Thus, based on the electric signal output from the magnetic induction chip 50, the intelligent detection of the state of the door 20 can be realized.
For example, the magnetic induction chip 50 is integrated on a PCB (Printed Circuit Board ) of the control board 60, so that the layout position of the magnetic induction chip 50 on the control board 60 is convenient to be reasonably adjusted, and the adjustment manner is flexible, so that the initial distance between the magnetic induction chip 50 and the at least one magnetic element 30 after the workbench 40 is fixed on the box 10 is in a reasonable threshold interval, for example, the reasonable threshold interval can be 20-50 mm, that is, the set distance threshold is 20-50 mm.
Illustratively, the magnetic induction chip 50 includes: the control board 60 is provided with an interface electrically connected with the power supply terminal, the ground terminal and the output terminal.
In an application example, as shown in fig. 4, the power terminal 1 of the magnetic induction chip 50 (i.e. the integrated magnetic switch shown in fig. 3) is connected to the +5v interface of the control board 60, the ground terminal 3 of the magnetic induction chip 50 is connected to the GND interface of the control board 60, and the output terminal 2 of the magnetic induction chip 50 is connected to the input interface of the microprocessor (Microcontroller Unit, MCU) on the control board 60. The output terminal 2 of the magnetic induction chip 50 outputs a high level signal when the door cover 20 is in a closed state, and the output terminal 2 of the magnetic induction chip 50 outputs a low level signal when the door cover 20 is in an open state.
Illustratively, the output terminals are electrically connected to an input interface of a microprocessor on the control board 60, which controls the operation of the laundry treating apparatus based on the electric signals output from the output terminals.
It can be understood that the microprocessor can control the operation of the clothes treatment device based on the electric signals output by the output terminal 2 of the magnetic induction chip 50, so that the work tables 40 with different shapes can be compatible with the electric signals of the induction chip to realize the intelligent detection of the state of the door cover 20 and perform relevant protection control, and the traditional detection mode of the reed switch also needs to consider the change of the arrangement position of the reed switch caused by the work tables 40 with different shapes, so as to adjust the corresponding circuit arrangement, and has poor compatibility. Therefore, the clothes treatment equipment provided by the embodiment of the application can be compatible with the work tables 40 with different shapes, and particularly can meet the arrangement requirement of the ultrathin work table 40.
Illustratively, the microprocessor controls the laundry treating apparatus to operate based on the electric signal output from the output terminal, comprising:
the microprocessor controls the laundry treating apparatus to normally operate based on the first electric signal indicating that the door cover 20 is in the closed state, which is output from the output terminal; or,
the microprocessor controls the laundry treating apparatus to stop operating and/or outputs alarm information based on the second electric signal indicating that the door cover 20 is in the opened state, which is output from the output terminal.
It will be appreciated that the laundry treatment apparatus according to the embodiment of the present application may implement protection and/or notification of abnormal opening of the door 20 during operation of the laundry treatment apparatus in a software control logic manner based on the electric signal output from the magnetic induction chip 50 by the microprocessor.
As shown in fig. 5, during operation of the laundry treatment apparatus, the output terminal of the magnetic induction chip 50 integrated on the control board 60 outputs an electrical signal (i.e., a door magnetic signal) to the MCU detection port, and the MCU responds based on the received door magnetic signal, if the door magnetic signal is a normal signal (corresponding to the first electrical signal), the laundry treatment apparatus is controlled to operate normally, and if the door magnetic signal is an abnormal signal (corresponding to the second electrical signal), the laundry treatment apparatus is controlled to stop operating, and outputs alarm information to prompt the user that the door cover 20 is opened abnormally.
It should be noted that, the laundry treatment apparatus according to the embodiment of the present application may be a washing machine, a clothes dryer, or a washing and drying integrated machine having a drying function.
It should be noted that: "first," "second," etc. are used to distinguish similar objects and not necessarily to describe a particular order or sequence.
In addition, the embodiments of the present application may be arbitrarily combined without any collision.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (7)
1. A laundry treatment apparatus, comprising:
the box body is provided with a clothes taking and placing opening;
the door cover is movably connected to the box body and is used for opening or closing the clothes taking and placing opening;
at least one magnetic element fixed on the door cover for generating a magnetic field;
the workbench is fixed on the box body;
the magnetic induction chip is arranged on the workbench and is used for inducing the magnetic field and outputting an electric signal reflecting the state of the door cover;
the workbench comprises a control board for controlling the operation of the clothes treatment equipment, and the magnetic induction chip is integrated on the control board;
the magnetic induction chip comprises a power terminal, a grounding terminal and an output terminal, and interfaces which are respectively and electrically connected with the power terminal, the grounding terminal and the output terminal are reserved on the control board;
when the door cover is covered on the box body, the distance between the magnetic induction chip and the at least one magnetic element is smaller than a set distance threshold.
2. The laundry treatment apparatus according to claim 1, wherein,
the door cover is hinged to the top end of the box body, the free end, far away from the hinged position, of the door cover is provided with at least one magnetic element, and the control board is fixed on the box body and opposite to the free end of the door cover.
3. The laundry treatment apparatus according to claim 1, wherein,
the output signal of the magnetic induction chip comprises a first electric signal and a second electric signal, wherein the first electric signal indicates that the door cover is in a closed state, and the second electric signal indicates that the door cover is in an open state;
the magnetic induction chip outputs the first electric signal when the distance between the magnetic induction chip and the at least one magnetic element is smaller than the set distance threshold value, and outputs the second electric signal when the distance between the magnetic induction chip and the at least one magnetic element is larger than or equal to the set distance threshold value.
4. The laundry treatment apparatus according to claim 1, wherein,
the set distance threshold is 20-50 mm.
5. The laundry treatment apparatus according to claim 1, wherein,
the output terminal is electrically connected with an input interface of a microprocessor on the control panel, and the microprocessor controls the operation of the clothes treatment equipment based on the electric signal output by the output terminal.
6. The laundry treatment apparatus of claim 5, wherein the microprocessor controls the laundry treatment apparatus to operate based on the electric signal output from the output terminal, comprising:
the microprocessor controls the normal operation of the clothes treatment equipment based on a first electric signal which is output by the output terminal and indicates that the door cover is in a closed state; or,
the microprocessor controls the clothes treatment equipment to stop running and/or outputs alarm information based on a second electric signal which is output by the output terminal and indicates that the door cover is in an open state.
7. The laundry treatment apparatus according to claim 1, wherein,
the at least one magnetic element is a permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210600152.XA CN114808366B (en) | 2022-05-27 | 2022-05-27 | Clothes treating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210600152.XA CN114808366B (en) | 2022-05-27 | 2022-05-27 | Clothes treating apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114808366A CN114808366A (en) | 2022-07-29 |
| CN114808366B true CN114808366B (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210600152.XA Active CN114808366B (en) | 2022-05-27 | 2022-05-27 | Clothes treating apparatus |
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| Country | Link |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201473780U (en) * | 2009-05-04 | 2010-05-19 | 松下家电研究开发（杭州）有限公司 | Magnetic induction safety switch device used by washing machine |
| CN102021789A (en) * | 2009-09-17 | 2011-04-20 | 杭州神林电子有限公司 | Electromagnetic door cover lock |
| CN104949607A (en) * | 2015-05-25 | 2015-09-30 | 苏州森特克测控技术有限公司 | Sensor and washing machine using same |
| CN106521869A (en) * | 2015-09-14 | 2017-03-22 | 松下家电研究开发（杭州）有限公司 | Method for detecting opening and closure of cover of clothing processing device, and clothing processing device |
| CN109061277A (en) * | 2018-06-12 | 2018-12-21 | 南京熊猫电子制造有限公司 | A kind of zero crossing detection device and detection method based on electromagnetic induction |
| CN112899984A (en) * | 2021-01-11 | 2021-06-04 | 格力电器（武汉）有限公司 | Washing machine and control method |
-
2022
- 2022-05-27 CN CN202210600152.XA patent/CN114808366B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201473780U (en) * | 2009-05-04 | 2010-05-19 | 松下家电研究开发（杭州）有限公司 | Magnetic induction safety switch device used by washing machine |
| CN102021789A (en) * | 2009-09-17 | 2011-04-20 | 杭州神林电子有限公司 | Electromagnetic door cover lock |
| CN104949607A (en) * | 2015-05-25 | 2015-09-30 | 苏州森特克测控技术有限公司 | Sensor and washing machine using same |
| CN106521869A (en) * | 2015-09-14 | 2017-03-22 | 松下家电研究开发（杭州）有限公司 | Method for detecting opening and closure of cover of clothing processing device, and clothing processing device |
| CN109061277A (en) * | 2018-06-12 | 2018-12-21 | 南京熊猫电子制造有限公司 | A kind of zero crossing detection device and detection method based on electromagnetic induction |
| CN112899984A (en) * | 2021-01-11 | 2021-06-04 | 格力电器（武汉）有限公司 | Washing machine and control method |
Also Published As
| Publication number | Publication date |
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| CN114808366A (en) | 2022-07-29 |
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