WO2018028407A1 - Cuisinière à induction à éléments multiples et procédé de régulation de puissance pour celle-ci - Google Patents

Cuisinière à induction à éléments multiples et procédé de régulation de puissance pour celle-ci Download PDF

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Publication number
WO2018028407A1
WO2018028407A1 PCT/CN2017/093561 CN2017093561W WO2018028407A1 WO 2018028407 A1 WO2018028407 A1 WO 2018028407A1 CN 2017093561 W CN2017093561 W CN 2017093561W WO 2018028407 A1 WO2018028407 A1 WO 2018028407A1
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WO
WIPO (PCT)
Prior art keywords
power
stoves
working
max
frequency
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Application number
PCT/CN2017/093561
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English (en)
Chinese (zh)
Inventor
李民
武永强
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深圳拓邦股份有限公司
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Publication of WO2018028407A1 publication Critical patent/WO2018028407A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/081—Arrangement or mounting of control or safety devices on stoves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/087—Arrangement or mounting of control or safety devices of electric circuits regulating heat
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
    • H05B2206/02—Induction heating

Definitions

  • the present invention relates to the field of electromagnetic heating technology, and more particularly to a multi-cooker induction cooker and a power control method thereof.
  • the application range of multi-cooker induction cooker is more and more wide, but when multiple stoves work at the same time, the power of each stove is not consistent, and its working frequency is also different.
  • the default operating frequency of each cooktop is usually outside the hearing range of the human ear, the operating frequency difference between the cooktops easily falls into the hearing range of the human ear, generating noise that the user can hear, affecting the user experience.
  • Prior Art 2 (Application No. CN200680023003.0) discloses a method of providing power to a plurality of induction coils, the plurality of induction coils alternately operating in the same frequency and difference frequency modes.
  • the above two methods can prevent the generation of interference noise to a certain extent, but the power that the induction coil can sense in the prior art 1 must be several times the maximum power of the multi-cooker (for example, N times for the N-cup) , causing a great waste of the capacity of the induction coil, and the withstand voltage of the resonant capacitor is very high, which is extremely unfavorable for the selection of the device and the stability of the product; in the prior art 2, the difference frequency and the same frequency are mutually converted to work.
  • the difference frequency operation since the working frequency is higher than the resonant frequency, the power of the coil is generally low. Therefore, when the target power is large, the difference frequency operation is difficult to reach the target power, and Existing The problem in technique 1.
  • the technical problem to be solved by the present invention is to provide a multi-cooker induction cooker and a power control method thereof against the defects of the prior art, which avoids noise generated due to inconsistent operating frequencies of the cooktops.
  • the technical solution adopted by the present invention to solve the technical problem thereof is to provide a power control method for a multi-cooker induction cooker, the method comprising the following steps:
  • S3 Control an actual output power of each of the stoves according to a magnitude relationship between the total target power P and the maximum power Pmax .
  • the step S3 comprises the following steps:
  • the step S32 comprises the following steps:
  • the step S33 comprises the following steps:
  • S332 Acquire a frequency f 1a when one of the cooktops operates at the maximum power P max , and an operating frequency f 2b of another stove that is simultaneously operated to reach the total target power;
  • step S333 determining whether the frequency difference ⁇ f 1 and ⁇ f 2 are within the range of the target frequency difference ⁇ f, and if yes, executing step S334, otherwise performing step S335;
  • step S334 time calculation for each burner to the maximum power P max T 2 operating in the working cycle: Go to step S336;
  • step S335 adjusting the working frequency of the two stoves working at the same time, proceeds to step S333;
  • the step S335 comprises the following steps:
  • the step S335a comprises the following steps:
  • A1 reducing the values of f 2b and f 1b to f 2B and f 1B ;
  • A2 The values of f 1a and f 2a are increased to f 1A and f 2A , and the total target power P is kept constant so that f 1 ⁇ ⁇ f 1 ⁇ f 2 , f 1 ⁇ ⁇ f 2 ⁇ f 2 .
  • the target frequency difference ranges from 16 KHz ⁇ ⁇ f ⁇ 26 KHz.
  • the present invention also provides a multi-cooker induction cooker using the above control method, comprising:
  • Operation panel used to select the target power of the working cooker and the cooktop
  • the controlling the actual output power of each of the stoves comprises: when P ⁇ P max , the stoves are operated in turn at a total target power P, and when one of the stoves is working, the other stoves are not working; When P>P max , each of the stoves respectively operates at different frequencies; the difference ⁇ f between the frequencies exceeds the hearing range of the human ear.
  • the difference between the frequencies ranges from 16 KHz ⁇ ⁇ f ⁇ 26 KHz.
  • the multi-chasing induction cooker power control method embodying the invention can effectively avoid the noise generated by each stove head working under different target powers, is not limited by the electromagnetic induction coil in the stove head, and each stove head can reach the required target working power, and Effectively reduce the loss of the power switch.
  • Figure 1 is a flow chart of the control method of the present invention
  • Figure 2 is a schematic diagram of the working cycle of a cooktop in the case of P ⁇ P max ;
  • FIG 3 is a schematic view showing the working cycle of another cooktop in the working state shown in Figure 2;
  • Figure 4 is a schematic diagram of the duty cycle of a cooktop in the case of P > P max ;
  • Fig. 5 is a schematic view showing the working cycle of another cooking head in the working state shown in Fig. 3.
  • the power control method of the multi-cooker induction cooker proposed by the present invention comprises the following steps:
  • step S3 includes the following steps:
  • step S32 includes the following steps:
  • step S33 includes the following steps:
  • S332 Acquire a frequency f 1a when one of the cooktops operates at the maximum power P max , and an operating frequency f 2b of another stove that is simultaneously operated to reach the total target power;
  • step S333 determining whether the frequency difference ⁇ f 1 and ⁇ f 2 are within the range of the target frequency difference ⁇ f, if yes, executing step S334, otherwise performing step S335;
  • step S335 adjusting the working frequency of the two stoves working at the same time, proceeds to step S333;
  • the difference frequency noise of the multi-cooker induction cooker is usually generated due to the difference frequency operation of the adjacent cooktops, and the two far-distance cookers operating at a different distance are less likely to generate noise that can be heard by the human ear, the above-mentioned
  • the power control method in the embodiment is preferably applied to the case where exactly two burners work at the same time.
  • the positions of the three stoves can be determined first. If each of the stoves is far apart, the work can be directly performed. If two of the stoves are in close proximity, the power is controlled as described above; If the three stoves are adjacent and the sum of the target powers of the two adjacent stoves is greater than the maximum power, the working frequency can be compared by the above method to ensure that the frequency difference between the two stoves is in the range of the human ear audible range. Outside.
  • step S33 includes the following steps:
  • the adjustment methods for f 1b and f 2a are the same as the adjustment methods for f 2b and f 1a described above.
  • the present invention provides a multi-cooker induction cooker that should use the above control method, the induction cooker comprising an operation panel and a control unit:
  • Operation panel used to select the target power of the working cooker and the cooktop
  • the induction cooker in some embodiments of the present invention is a double cooktop induction cooker, the double cooktop comprising a first cooktop and a second cooktop. The user selects the first stove and the second stove to work simultaneously through the operation panel of the induction cooker and sets the target power of both.
  • the first cooktop and the second cooktop operate in turn at a total target power P, and when one of the cooktops is in operation, the other cooktop does not work.
  • the induction cooker control unit controls the corresponding stove head according to the calculated power and time.
  • the first cooktop and the second cooktop operate together and operate in turn at maximum power Pmax , respectively.
  • the operating power of the other cooktop is PPmax .
  • the induction cooker control unit controls the corresponding stove head according to the calculated power and time.
  • the adjustment methods for f 1b and f 2a are the same as the adjustment methods for f 2b and f 1a described above.
  • a ⁇ f 1 ⁇ f 1 or ⁇ f 2 ⁇ f 1 condition may occur, in which case the first cooktop and the second cooktop may operate at the same frequency. Specifically, the frequency at which the first stove and the second stove are respectively operated at respective target powers is calculated, and the two are compared to obtain a smaller frequency value, and both of the stoves operate at the smaller frequency value. In this case, by adjusting the PWM to achieve the adjustment of the output power, the operating frequency of each cooktop of the induction cooker is uniform, achieving a noise-free effect.
  • the multi-chasing induction cooker power control method embodying the invention can effectively avoid the noise generated by each stove head working under different target powers, is not limited by the electromagnetic induction coil in the stove head, and each stove head can reach the required target working power, and Effectively reduce the loss of the power switch.

Abstract

La présente invention concerne une cuisinière à induction à éléments multiples et un procédé de régulation de puissance pour celle-ci, la cuisinière à induction à éléments multiples comprenant un panneau d'actionnement et une unité de commande; et le procédé de régulation de puissance comprend les étapes suivantes : S1, conformément à la sélection d'un utilisateur, acquisition d'une puissance cible Pn et de la puissance maximale Pnmax de chaque élément d'au moins deux éléments pendant le fonctionnement, la puissance maximale Pnmax de chaque élément étant identique, à savoir, Pnmax = Pmax; S2, calcul d'une puissance cible totale P = ΣPn de la cuisinière à induction à éléments multiples en fonction de la puissance cible Pn; S3, Régulation de la puissance de sortie réelle de chaque élément en fonction des tailles relatives de la puissance cible totale P et la puissance maximale Pmax. Le procédé de régulation de puissance de cuisinière à induction à éléments multiples peut éviter efficacement le bruit généré par la cuisinière à induction fonctionnant à une puissance cible différente et n'est pas limité par une bobine d'induction électromagnétique de l'élément. Chaque élément peut atteindre une puissance de fonctionnement cible souhaitée, et la perte de commutation de puissance peut être efficacement réduite.
PCT/CN2017/093561 2016-08-10 2017-07-19 Cuisinière à induction à éléments multiples et procédé de régulation de puissance pour celle-ci WO2018028407A1 (fr)

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Application Number Priority Date Filing Date Title
CN201610652350.5A CN106247416B (zh) 2016-08-10 2016-08-10 多灶头电磁炉及其功率控制方法
CN201610652350.5 2016-08-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112113246A (zh) * 2020-08-27 2020-12-22 中山爱它电器科技有限公司 多头电磁炉的降噪方法及控制装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106247416B (zh) * 2016-08-10 2018-10-23 深圳拓邦股份有限公司 多灶头电磁炉及其功率控制方法
CN107087319B (zh) * 2017-05-15 2020-11-17 深圳拓邦股份有限公司 一种多灶头电磁炉的控制方法及装置
CN109938616B (zh) * 2017-12-21 2020-12-22 佛山市顺德区美的电热电器制造有限公司 电磁烹饪器具及其输出功率计算方法
CN108243516B (zh) * 2018-02-05 2021-02-26 宁波拓邦智能控制有限公司 一种电磁加热设备的功率控制方法、装置及电磁加热设备
KR102607284B1 (ko) * 2018-08-30 2023-11-27 엘지전자 주식회사 유도 가열 장치 및 유도 가열 장치의 제어 방법

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CN103444261A (zh) * 2011-03-31 2013-12-11 Bsh博世和西门子家用电器有限公司 家用器具装置
US20120312804A1 (en) * 2011-06-09 2012-12-13 General Electric Company Audible noise manipulation for induction cooktop
CN103891401A (zh) * 2011-11-04 2014-06-25 Bsh博世和西门子家用电器有限公司 感应加热装置
CN103574706A (zh) * 2012-08-07 2014-02-12 美的集团股份有限公司 多头电磁灶及其加热控制方法
EP2846607A1 (fr) * 2013-09-05 2015-03-11 Electrolux Appliances Aktiebolag Table de cuisson par induction comprenant une zone de cuisson avec trois ou plusieurs bobines d'induction et procédé permettant de commander une zone de cuisson
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Publication number Priority date Publication date Assignee Title
CN112113246A (zh) * 2020-08-27 2020-12-22 中山爱它电器科技有限公司 多头电磁炉的降噪方法及控制装置

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