CN107844061A - Electric heater and its heating control circuit - Google Patents

Electric heater and its heating control circuit Download PDF

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Publication number
CN107844061A
CN107844061A CN201610834771.XA CN201610834771A CN107844061A CN 107844061 A CN107844061 A CN 107844061A CN 201610834771 A CN201610834771 A CN 201610834771A CN 107844061 A CN107844061 A CN 107844061A
Authority
CN
China
Prior art keywords
fire
electric heater
heating
controlled switch
contact gate
Prior art date
Application number
CN201610834771.XA
Other languages
Chinese (zh)
Inventor
戴亮
尹坤任
杨伸其
郭远久
陈彬
张毅
Original Assignee
广东美的生活电器制造有限公司
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广东美的生活电器制造有限公司, 美的集团股份有限公司 filed Critical 广东美的生活电器制造有限公司
Priority to CN201610834771.XA priority Critical patent/CN107844061A/en
Publication of CN107844061A publication Critical patent/CN107844061A/en

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00Apparatus for making beverages
    • A47J31/44Parts or details or accessories of beverage-making apparatus
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J43/00Miscellaneous implements for preparing or holding food
    • A47J43/04Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
    • A47J43/07Parts or details, e.g. mixing tools, whipping tools
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers

Abstract

The invention discloses a kind of heating control circuit of electric heater, including:Heat generating components, heat generating components include the first fire end, the second fire end and the 3rd fire end, and the first end of AC power of first fire end with inputting is connected;First contact gate-controlled switch, the first end of the first contact gate-controlled switch are connected with the second fire end, and the second end of the first contact gate-controlled switch is connected with the 3rd fire end;Second contact gate-controlled switch, the first end of the second contact gate-controlled switch are connected with the 3rd end of the first contact gate-controlled switch, and the second end of the second contact gate-controlled switch is connected with the second end of AC power;Control unit, control terminal of the control unit respectively with first, second contact gate-controlled switch is connected, control unit is controlled to first, second contact gate-controlled switch to control electric heater to carry out heating power switching, so as to realize that the heating power to electric heater precisely, reliably adjust.The invention also discloses a kind of electric heater.

Description

Electric heater and its heating control circuit

Technical field

The present invention relates to household electrical appliance technical field, heating control circuit and one kind electricity of more particularly to a kind of electric heater Heater.

Background technology

Heating electric appliances in correlation technique generally realize power adjusting by following two modes:

One is the heating power for heating electric appliances is adjusted by the semiconductor switch class device such as controllable silicon.But That the problem of it is present is, on the one hand due to larger by the electric current of device, the temperature of device easily raises, and then need with Larger radiating element is used cooperatively, complicated, cost is high;On the other hand, wink of the semiconductor switch in conducting and shut-off Between be also easy to produce very big interference, it is unfavorable to the EMC performances of complete machine.

The second is the heating power for heating electric appliances is adjusted by contact class switching device.But existing for it Problem is can not to accomplish lossless power adjustable substantially, can only by device frequently switching on to realize Power Regulation in itself, so as to meeting Causing switching device contact itself, easily oxidation and aging, the work service life for also resulting in switching device greatly shorten.

The content of the invention

It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention One purpose is to propose a kind of heating control circuit of electric heater, the heating power of electric heater can be carried out precisely, Reliable regulation.

It is another object of the present invention to propose a kind of electric heater.

To reach above-mentioned purpose, first aspect present invention embodiment proposes a kind of heating control circuit of electric heater, Including:Heat generating components, the heat generating components include the first fire end, the second fire end and the 3rd fire end, the heat generating components Heating power when first fire end and second fire end access the heating circuit of the electric heater is more than The heating power during heating circuit of first fire end and the 3rd fire end access electric heater, described first The first end of AC power of the fire end with inputting is connected;First contact gate-controlled switch, the first contact gate-controlled switch First end be connected with second fire end, the second end of the first contact gate-controlled switch and the 3rd fire end phase Even;Second contact gate-controlled switch, the first end of the second contact gate-controlled switch and the first contact gate-controlled switch The 3rd end be connected, the second end of the second contact gate-controlled switch is connected with the second end of the AC power;Control is single Member, described control unit respectively with the control terminal of the first contact gate-controlled switch and the second contact gate-controlled switch Control terminal is connected, and described control unit is controlled to the first contact gate-controlled switch and the second contact gate-controlled switch Make to control the electric heater to carry out heating power switching.

The heating control circuit of the electric heater proposed according to embodiments of the present invention, heat generating components is in the first fire end and Heating power when two fire ends access the heating circuit of electric heater is more than in the first fire end and the 3rd fire end access electricity The heating power during heating circuit of heater, control unit pass through controllable to the first contact gate-controlled switch and the second contact Switch is controlled, and to control the access way of heat generating components, and then controls electric heater to carry out heating power switching.Thus, By the three-terminal link mode of heat generating components, heating power can be achieved and precisely, reliably switch, and gate-controlled switch frequency need not be controlled Turn on and turn off numerously, reduce oxidation and the aging speed of gate-controlled switch itself contact, improve gate-controlled switch uses the longevity Life, Consumer's Experience is lifted, lift product competitiveness.

In addition, the heating control circuit of electric heater according to the above embodiment of the present invention can also have what is added as follows Technical characteristic:

According to one embodiment of present invention, the first contact gate-controlled switch can be closed type single-pole double throw relay Device, the second contact gate-controlled switch can be open type single-pole single-throw(SPST relay, increase the reliability of gate-controlled switch device.

According to one embodiment of present invention, the heat generating components can be heat-generating pipe.

According to one embodiment of present invention, the 3rd fire end is in the position of the heat-generating pipe and can adjust, so as to Can precisely it be switched between different power.

According to one embodiment of present invention, when the 3rd fire end is in the centre position of the heat-generating pipe, institute State heating of the heat generating components when first fire end and second fire end access the heating circuit of the electric heater Power is the heating power when first fire end and the 3rd fire end access the heating circuit of the electric heater Twice.

According to one embodiment of present invention, wherein, when first end and the 3rd end of the first contact gate-controlled switch When connection and the second contact gate-controlled switch closure, the electric heater carries out full work(heating;When first contact When second end of gate-controlled switch connects with the 3rd end and the second contact gate-controlled switch closes, the electric heater is carried out Half work(heats.

According to one embodiment of present invention, the electric heater can be soy bean milk making machine.

To reach above-mentioned purpose, second aspect of the present invention embodiment proposes a kind of electric heater, including described electricity adds The heating control circuit of hot device.

The electric heater proposed according to embodiments of the present invention, can by the heating control circuit of above-mentioned electric heater, The accurate switching of the heating power of electric heater is realized, and gate-controlled switch need not be controlled continually to turn on and turn off, is reduced The oxidation of gate-controlled switch itself contact and aging speed, the service life of gate-controlled switch is improved, lift Consumer's Experience, lifting production Product competitiveness.

Brief description of the drawings

Fig. 1 is the circuit theory diagrams of the heating control circuit of electric heater according to embodiments of the present invention;

Fig. 2 is the 3rd fire end according to the heat generating components of a specific embodiment of the invention among heat generating components The circuit theory diagrams of position;And

Fig. 3 is the 3rd fire end according to the heat generating components of a specific embodiment of the invention in heat generating components 1/4 The circuit theory diagrams of position.

Embodiment

Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.

Below in conjunction with the accompanying drawings come describe the embodiment of the present invention proposition electric heater heating control circuit and electrical heating Device.

Fig. 1 is the circuit theory schematic diagram of the heating control circuit of electric heater according to embodiments of the present invention.Such as Fig. 1 institutes Show, the heating control circuit of the electric heater includes:Heat generating components 100, the first contact switch the 200, second contact switch 300 and control unit 400.

Wherein, heat generating components 100 includes the first fire end 10, the second fire end 20 and the 3rd fire end 30, heat generating components 100 heating power in the heating circuit of the first fire end 10 and the second fire end 20 access electric heater is more than to be added first The fire end 30 of hot junction 10 and the 3rd accesses the heating power during heating circuit of electric heater, the first fire end 10 and the friendship of input The first end N of stream power supply is connected.The first end S1 of first contact gate-controlled switch 200 is connected with the second fire end 20, and first touches Second end S2 of point type gate-controlled switch 200 is connected with the 3rd fire end 30.The first end S4 of second contact gate-controlled switch 300 with 3rd end S3 of the first contact gate-controlled switch 200 is connected, the second end S5 and AC power of the second contact gate-controlled switch 300 The second end L be connected.Control unit 400 is controllable with the control terminal of the first contact gate-controlled switch 200 and the second contact respectively The control terminal of switch 300 is connected, and control unit 400 is to the first contact gate-controlled switch 200 and the second contact gate-controlled switch 300 It is controlled to control electric heater to carry out heating power switching.

That is, control unit 400 has the first control port 40 and the second control port 50, wherein, control unit 400 the first control port 40 is connected with the control terminal of the first contact gate-controlled switch 200, and control unit 400 can pass through first Control port 40 controls the 3rd end S3 and first end S1 of the first contact gate-controlled switch 200 to connect or connected with the second end S2; Second control port 50 of control unit 400 is connected with the control terminal of the second contact gate-controlled switch 300, and control unit 400 can The on or off of second contact gate-controlled switch 300 is controlled by the second control port 50.

Specifically, control unit 400 can control the access of heat generating components 100 by the first contact gate-controlled switch 200 Mode, to control the heating power of electric heater, and by the second contact gate-controlled switch 300 heat generating components 100 can be controlled to enter Row heating stops heating.

When control unit 400 controls the second contact gate-controlled switch 300 to be off, the heating of electric heater is returned Road open circuit, heat generating components 100 stop heating.

When control unit 400 controls the second contact gate-controlled switch 300 closure, the heating circuit of whole electric heater is led Logical, heat generating components 100 is heated, now, if control unit 400 controls the first end of the first contact gate-controlled switch 200 S1 and the 3rd end S3 is connected, then the first fire end 10 of heat generating components 100 is connected in circuit with the second fire end 20, electrical heating Device is heated with heating power W1.If control unit 400 controls the second end S2 and the of the first contact gate-controlled switch 200 Three end S3 are connected, then the first fire end 10 of heat generating components 100 is connected in circuit with the 3rd fire end 30, and electric heater is to add Thermal power W2 is heated.Wherein, W2<W1.

Thus, the heating power control circuit of the electric heater of the embodiment of the present invention passes through control by control unit 400 The closure and disconnection of first contact gate-controlled switch 200 and the second contact gate-controlled switch 300, to control heat generating components 100 to exist Connected mode in circuit, so as to realize the accurate switching of the heating power of electric heater according to work requirements.

According to one embodiment of present invention, the first contact gate-controlled switch 200 can be closed type single-pole double-throw relay, Second contact gate-controlled switch 300 can be open type single-pole single-throw(SPST relay.

According to one embodiment of present invention, heat generating components 100 can be heat-generating pipe.

According to one embodiment of present invention, the 3rd fire end 30 of heat generating components 100 be in heat-generating pipe position it is adjustable It is whole.

According to one embodiment of present invention, when the 3rd fire end 30 is in the centre position of heat-generating pipe, heat generating components 100 heating power in the heating circuit of the first fire end 10 and the second fire end 20 access electric heater is in the first heating The fire end 30 of end 10 and the 3rd accesses twice of heating power during the heating circuit of electric heater.

Specifically, Fig. 2 is the 3rd fire end according to the heat generating components of a specific embodiment of the invention in hair The circuit theory diagrams in thermal part centre position.As shown in Fig. 2 when the 3rd fire end 30 of heat generating components 100 is in heat-generating pipe During centre position, the heating wire for accessing the heat-generating pipe of the heating circuit of electric heater is the half of heat-generating pipe itself heating wire, institute Using heat generating components 100 the first fire end 10 and the second fire end 20 access electric heater heating circuit when heating power as Twice of heating power in the heating circuit of the first fire end 10 and the 3rd fire end 30 access electric heater.

Wherein, according to one embodiment of present invention, when the first end of the first contact gate-controlled switch connects with the 3rd end, And during the second contact gate-controlled switch closure, electric heater carries out full work(heating.When the second end of the first contact gate-controlled switch Connected with the 3rd end and the second contact gate-controlled switch close when, electric heater carry out half work(heating.In addition, according to the present invention A specific embodiment, the 3rd fire end of heat generating components can also be in the position of heat generating components 1/4.As shown in figure 3, when heating When 3rd fire end 30 of part 100 is in position at the 1/4 of heat-generating pipe, heat generating components 100 is in the first fire end 10 and second Heating power when fire end 20 accesses the heating circuit of electric heater is to be accessed in the first fire end 10 and the 3rd fire end 30 Four times of heating power during the heating circuit of electric heater.

And so on, when the 3rd fire end 30 of heat generating components 100 is in position at the 1/n of heat-generating pipe, heat generating components 100 heating power in the heating circuit of the first fire end 10 and the second fire end 20 access electric heater is in the first heating The fire end 30 of end 10 and the 3rd accesses n times of heating power during the heating circuit of electric heater.

In a word, access that the heating wire of heat-generating pipe in the heating circuit of electric heater is fewer, the heating of whole electric heater is returned The heating power on road is smaller, otherwise bigger, but the maximum heating circuit for being no more than heat-generating pipe heating wire and all accessing electric heater In heating power, i.e. the rated power no more than heat generating components 100, so as to according to being actually needed accurate regulation heating portion 3rd fire end 30 of part 100 realizes the accurate switching of the heating power of electric heater, avoids electric resources in the position of heat-generating pipe Waste.

According to one embodiment of present invention, electric heater can be soy bean milk making machine.

In summary, the heating control circuit of the electric heater proposed according to embodiments of the present invention, heat generating components is first The heating power during heating circuit of fire end and the second fire end access electric heater is more than to be added in the first fire end and the 3rd The heating power during heating circuit of electric heater is accessed in hot junction, and control unit passes through to the first contact gate-controlled switch and second Contact gate-controlled switch is controlled, and to control the access way of heat generating components, and then controls electric heater to carry out heating power Switching.Thus, by the three-terminal link mode of heat generating components, heating power can be achieved and precisely, reliably switch, and without control Gate-controlled switch is continually turned on and turned off, and is reduced oxidation and the aging speed of gate-controlled switch itself contact, is improved controllable open The service life of pass, Consumer's Experience is lifted, lift product competitiveness.

In addition, on the other hand the embodiment of the present invention proposes a kind of electric heater, it includes adding for above-mentioned electric heater Thermal control circuit.

The electric heater proposed according to embodiments of the present invention, can by the heating control circuit of above-mentioned electric heater, The accurate switching of the heating power of electric heater is realized, and gate-controlled switch need not be controlled continually to turn on and turn off, is reduced The oxidation of gate-controlled switch itself contact and aging speed, the service life of gate-controlled switch is improved, lift Consumer's Experience, lifting production Product competitiveness.

In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.

In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three It is individual etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc. Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally;Can be that machinery connects Connect or electrically connect;Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements The connection in portion or the interaction relationship of two elements, limited unless otherwise clear and definite.For one of ordinary skill in the art For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.

In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification Close and combine.

Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changed, replacing and modification.

Claims (8)

  1. A kind of 1. heating control circuit of electric heater, it is characterised in that including:
    Heat generating components, the heat generating components include the first fire end, the second fire end and the 3rd fire end, and the heat generating components exists Heating power when first fire end and second fire end access the heating circuit of the electric heater is more than in institute State heating power when the first fire end and the 3rd fire end access the heating circuit of the electric heater, described first plus The first end of AC power of the hot junction with inputting is connected;
    First contact gate-controlled switch, the first end of the first contact gate-controlled switch are connected with second fire end, institute The second end for stating the first contact gate-controlled switch is connected with the 3rd fire end;
    Second contact gate-controlled switch, the first end of the second contact gate-controlled switch and the first contact gate-controlled switch The 3rd end be connected, the second end of the second contact gate-controlled switch is connected with the second end of the AC power;
    Control unit, the described control unit control terminal with the first contact gate-controlled switch and second contact respectively The control terminal of gate-controlled switch is connected, and described control unit is controllable to the first contact gate-controlled switch and second contact Switch is controlled to control the electric heater to carry out heating power switching.
  2. 2. the heating control circuit of electric heater according to claim 1, it is characterised in that first contact is controllable It is open type single-pole single-throw(SPST relay to switch as closed type single-pole double-throw relay, the second contact gate-controlled switch.
  3. 3. the heating control circuit of electric heater according to claim 1, it is characterised in that the heat generating components is heating Pipe.
  4. 4. the heating control circuit of electric heater according to claim 3, it is characterised in that the 3rd fire end is in The position of the heat-generating pipe can adjust.
  5. 5. the heating control circuit of electric heater according to claim 4, it is characterised in that at the 3rd fire end When the centre position of the heat-generating pipe, the heat generating components is described in first fire end and second fire end access The heating power during heating circuit of electric heater is to add in first fire end and the 3rd fire end access electricity Twice of heating power during the heating circuit of hot device.
  6. 6. the heating control circuit of electric heater according to claim 5, it is characterised in that wherein,
    When the first end of the first contact gate-controlled switch connected with the 3rd end and the second contact gate-controlled switch close When, the electric heater carries out full work(heating;
    When the second end of the first contact gate-controlled switch connected with the 3rd end and the second contact gate-controlled switch close When, the electric heater carries out half work(heating.
  7. 7. the heating control circuit of electric heater according to claim 1, it is characterised in that the electric heater is soya-bean milk Machine.
  8. 8. a kind of electric heater, it is characterised in that include the heating of the electric heater according to any one of claim 1-7 Control circuit.
CN201610834771.XA 2016-09-20 2016-09-20 Electric heater and its heating control circuit CN107844061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610834771.XA CN107844061A (en) 2016-09-20 2016-09-20 Electric heater and its heating control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610834771.XA CN107844061A (en) 2016-09-20 2016-09-20 Electric heater and its heating control circuit

Publications (1)

Publication Number Publication Date
CN107844061A true CN107844061A (en) 2018-03-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610834771.XA CN107844061A (en) 2016-09-20 2016-09-20 Electric heater and its heating control circuit

Country Status (1)

Country Link
CN (1) CN107844061A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2030048U (en) * 1988-02-15 1989-01-04 范印光 Portable electric heat blanket with adjustable temp.
CN1386466A (en) * 2002-06-25 2002-12-25 赵申苓 Energy-saving multi-power electric cooker
US20030230981A1 (en) * 2002-05-22 2003-12-18 Ushio Denki Kabushiki Kaisya Flash lamp unit and flash radiation device
CN201759359U (en) * 2010-08-03 2011-03-16 陈清尧 Muffling type water dispenser
CN103225842A (en) * 2013-05-20 2013-07-31 陈孟春 Far infrared intelligent electric heating table and control circuit thereof
CN103263144A (en) * 2013-05-20 2013-08-28 陈孟春 Far infrared intelligent electric heating writing desk plate and control circuit thereof
CN203298358U (en) * 2013-05-27 2013-11-20 广东美的厨房电器制造有限公司 Microwave oven
CN204536939U (en) * 2015-04-13 2015-08-05 广东美的生活电器制造有限公司 The power control circuit of electric kettle and electric kettle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2030048U (en) * 1988-02-15 1989-01-04 范印光 Portable electric heat blanket with adjustable temp.
US20030230981A1 (en) * 2002-05-22 2003-12-18 Ushio Denki Kabushiki Kaisya Flash lamp unit and flash radiation device
CN1386466A (en) * 2002-06-25 2002-12-25 赵申苓 Energy-saving multi-power electric cooker
CN201759359U (en) * 2010-08-03 2011-03-16 陈清尧 Muffling type water dispenser
CN103225842A (en) * 2013-05-20 2013-07-31 陈孟春 Far infrared intelligent electric heating table and control circuit thereof
CN103263144A (en) * 2013-05-20 2013-08-28 陈孟春 Far infrared intelligent electric heating writing desk plate and control circuit thereof
CN203298358U (en) * 2013-05-27 2013-11-20 广东美的厨房电器制造有限公司 Microwave oven
CN204536939U (en) * 2015-04-13 2015-08-05 广东美的生活电器制造有限公司 The power control circuit of electric kettle and electric kettle

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