CN216976853U

CN216976853U - Multi-burner combined inverter electromagnetic range

Info

Publication number: CN216976853U
Application number: CN202123354187.XU
Authority: CN
Inventors: 宁闯; 刘艳; 潘盛超; 邹义; 王春
Original assignee: Shanghai Zhongyi Electrical Appliance Equipment Co ltd
Current assignee: Shanghai Zhongyi Electrical Appliance Equipment Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-07-15
Anticipated expiration: 2031-12-29

Abstract

The utility model provides a multi-burner combined inverter electromagnetic stove; a plurality of burners are arranged, each burner is provided with a plurality of groups of electromagnetic induction LC resonance circuits, all the LC resonance circuits of each burner are connected with an inverter, the inverter is connected with a driving unit, a single LC resonance circuit can work or a plurality of LC resonance circuits work simultaneously through electronic switches K1-1 and K1-2, the inverters and the driving units of the burners can be connected in parallel or not through electronic switches K1 and K2., and the electronic switches K1-1 and K1-2 and the switches K1 and K2. are controlled by a microprocessor CPU. The utility model has the advantages that the combined inversion control operation mode is adopted, the space structure is reduced, the structure is more compact, the use of repeated devices is avoided, and the manufacturing cost is reduced.

Description

Multi-burner combined inverter electromagnetic range

Technical Field

The utility model relates to the technical field of electric appliances, in particular to a multi-burner combined type inverter electromagnetic stove based on an electromagnetic stove.

Background

The multi-burner electromagnetic oven is widely applied to civil and commercial kitchens, is commonly used for cooking dishes, soup and the like, most products on the market adopt a topological form that an inverter circuit and an LC resonance circuit are in one-to-one correspondence, so that the flexibility of the product is insufficient, a heating area needs to be selected in the using process, and when a large area is required to be heated simultaneously, the heating areas of the electromagnetic ovens are insufficient; when the small container needs to be heated, the magnetic field leakage is often caused by the overlarge coil, and the efficiency is low.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides a multi-burner combined inverter electromagnetic stove; a plurality of burners are arranged, each burner is provided with an array of electromagnetic induction LC resonance circuits, all the LC resonance circuits of each burner are connected with an inverter, the inverter is connected with a driving unit, a single LC resonance circuit can work or a plurality of LC resonance circuits work simultaneously through electronic switches K1-1 and K1-2, the inverters and the driving units of the burners can be connected in parallel or not through the electronic switches K1 and K2., and the electronic switches K1-1 and K1-2 and the switches K1 and K K2. are controlled by a CPU of a microprocessor.

The microprocessor CPU controls an LC resonance circuit 1-1 corresponding to the burner to work by closing an electronic switch K1-1, or controls LC resonance circuits 1-2 and 1-3 to work simultaneously by closing electronic switches K1-2 and K1-3.

When the LC resonance circuit 1-1 works or the LC resonance circuits 1-2 and 1-3 work simultaneously, the microprocessor CPU can also control the inverter unit 1 and the inverter unit 2 to work in parallel when the switch K1 is closed.

And the microprocessor CPU is connected with the high-frequency current sampling circuit, the temperature sampling circuit, the voltage sampling circuit, the display unit and the human-computer interaction unit.

The high-frequency current sampling circuit collects a high-frequency current value of the LC resonance circuit, the temperature sampling circuit collects the temperature of the LC resonance circuit, and the voltage sampling circuit collects a working direct-current voltage value so that the working direct-current voltage value is within a set value range.

The man-machine interaction unit is provided with a control panel, the control panel is provided with input buttons, the input buttons comprise buttons for selecting the number and the position of the furnace ends, and the power of the furnace ends is set.

The display unit displays the far-going state of the selected furnace end, including the temperature of the selected furnace end, the current of the LC resonance circuit of the selected furnace end and the stability of the working voltage.

The utility model has the advantages that the combined inversion control operation mode is adopted, and the combined inversion control operation mode is different from the traditional multi-burner electromagnetic stove consisting of single group and multiple machine cores. The single-core multiple combined inversion control output power mode firstly reduces the space structure of the original design, is more compact, simultaneously avoids the use of repeated devices and reduces the manufacturing cost. Secondly, the position of the induction coil corresponding to the cookware is judged in a polling mode, and corresponding working states are set, wherein the working states comprise single-group LC resonance circuit output control, multiple-group LC resonance circuit parallel output control, multiple-group inverter units can be controlled independently or in parallel, the work is flexible and convenient, and the product reliability is improved.

Drawings

FIG. 1 is a block diagram of the circuit configuration of the present invention;

fig. 2 is a flow chart of the heating control of the present invention.

Detailed Description

Referring to fig. 1, after the man-machine interaction unit receives a heating request, the CPU detects the positions of the induction coils one by one in a polling manner, and determines the induction coil corresponding to the pot. The working states of single group, multiple groups or super power and the like are determined by the position and the number of the pots and the set power.

When a small-size pot is placed on the induction cooker, if the LC resonance circuit position where the pot is located is detected to be the LC resonance circuit 1-1 after polling, the CPU disconnects other induction coil LC resonance circuits from the inversion unit through the electronic switch K, then the switch K1-1 is closed, the inversion unit 1 corresponding to the induction coil LC resonance circuit 1-1 where the pot is located is started, the induction coil LC resonance circuit 1-1 where the pot is located generates an alternating magnetic field, and the pot is heated.

When a large-sized pot is placed on the panel of the electromagnetic oven, the CPU still detects the positions of the induction coils one by one through a polling mode, and judges whether the positions of a plurality of groups of induction coils corresponding to the pot are LC resonance circuits 1-1 and 1-2, the CPU disconnects the LC resonance circuits of other induction coils from the inversion unit through an electronic switch K,

then, LC resonance circuits 1-1 and 1-2 of two groups of induction coils at the position of the cookware and corresponding inversion units 1 are started, so that the two groups of induction coils at the position of the cookware generate alternating magnetic fields to heat the cookware, the inversion frequencies and phases of the inversion units are the same, and no difference frequency interference is generated when the induction cooker works.

When the cookware placed on the electromagnetic stove table top needs to work at a short time and with ultrahigh power, the CPU still detects the positions of the induction coils one by one in a polling mode, and judges whether the position of the LC resonance loop corresponding to the cookware is an LC resonance loop 1-1, the CPU can close a switch K1, the inversion unit 1 and the adjacent inversion unit 2 are connected into the loop, so that the inversion unit 1 and the inversion unit 2 are connected in parallel for use, the current capacity of the inversion unit is improved, the heating of the inversion unit is reduced, and the reliability of the product is improved.

When having placed many pans (many furnace ends work promptly) on the electromagnetism kitchen mesa, CPU still detects out the induction coil position that many pans correspond through the mode of polling to switch on the contravariant unit that corresponds and corresponding LC resonant circuit, make the electromagnetism kitchen carry out intermittent type heating control to many pans simultaneously. For example, when four cookware with different sizes are placed on the panel of the induction cooker, the LC positions of the induction coils corresponding to the cookware 1 are 1-1 and 1-2, the LC positions of the induction coils covered by the cookware 2 are 2-2, 2-3 and 2-4, the LC positions of the induction coils covered by the cookware 3 are 3-4 and 3-5, and the LC positions of the induction coils covered by the cookware 4 are 4-2. Before outputting heating power, the CPU firstly disconnects the parallel control switches K1, K2, K3 and K4 of each inversion unit, and then connects the parallel control switches K1-1 and K1-2 of the multi-path LC resonance circuit; k2-2, K2-3 and K2-4; k3-4 and K3-5; k4-2 is closed. At the moment, the CPU respectively controls the heating states of the 4 cookers according to the set output power, and when the cookers need to work at rated power, the cookers can work at the same frequency; when they need different power, they can work in alternative clearance mode, thus ensuring to reach the set output power and ensuring the heating effect.

The driving module circuit and the power output module circuit of the driving unit power device are designed by adopting a half-bridge circuit, are connected with the corresponding single group of coils to integrally form a power output structure, and can form a plurality of groups or single group of loops or ultra-high power output by control.

Claims

1. A multi-burner combined type inverter electromagnetic stove is characterized in that a plurality of burners are arranged, each burner is provided with a plurality of groups of electromagnetic induction LC resonant circuits, all the LC resonant circuits of each burner are connected with an inverter, the inverter is connected with a driving unit, a single LC resonant circuit can work or a plurality of LC resonant circuits work simultaneously through electronic switches K1-1 and K1-2, the inverters and the driving units of the plurality of burners can be connected in parallel or not through electronic switches K1 and K K2., and the electronic switches K1-1 and K1-2 and the switches K1 and K2. are controlled by a microprocessor CPU.

2. The multi burner combined inverter induction cooker according to claim 1, wherein said microprocessor CPU controls an LC resonance circuit 1-1 corresponding to the burner to operate by closing an electronic switch K1-1, or controls LC resonance circuits 1-2, 1-3 to operate simultaneously by closing electronic switches K1-2, K1-3.

3. The induction cooker with multi-burner combined inverter as claimed in claim 2, wherein when said LC resonant circuit 1-1 is operated, or said LC resonant circuits 1-2, 1-3 are operated simultaneously, the microprocessor CPU is further capable of controlling the inverter unit 1 and the inverter unit 2 to operate in parallel by closing the switch K1.

4. The induction cooker with multi-burner combined inverter as claimed in claim 1, wherein said microprocessor CPU is connected to a high frequency current sampling circuit, a temperature sampling circuit, a voltage sampling circuit, a display unit and a man-machine interaction unit.

5. The induction cooker with multi-burner combined inverter as claimed in claim 4, wherein the high frequency current sampling circuit collects a high frequency current value of the LC resonant tank, the temperature sampling circuit collects a temperature of the LC resonant tank, and the voltage sampling circuit collects a working dc voltage value within a range of a set value.

6. The multi-burner combined inverter induction cooker as set forth in claim 4, wherein said induction cooker

The man-machine interaction unit is provided with a control panel, the control panel is provided with input buttons, the input buttons comprise furnace end number and position selection buttons, and the furnace end power setting selection buttons.

7. The multi-burner modular inverter induction cooker of claim 4 wherein said display unit displays the status of travel of a selected burner including the temperature of the selected burner, the current of the selected burner LC resonant circuit and the operating voltage stability.