CN215529361U - Push-pull type electromagnetic heating system - Google Patents
Push-pull type electromagnetic heating system Download PDFInfo
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- CN215529361U CN215529361U CN202022796278.8U CN202022796278U CN215529361U CN 215529361 U CN215529361 U CN 215529361U CN 202022796278 U CN202022796278 U CN 202022796278U CN 215529361 U CN215529361 U CN 215529361U
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Abstract
The utility model relates to the technical field of push-pull type electromagnetic heating systems, in particular to a push-pull type electromagnetic heating system, which comprises a group of high-power switching devices K1, a group of high-power switching devices K2, a group of electromagnetic conversion coils L1 and an electromagnetic conversion coil L2, wherein the high-power switching devices K1 and K2 form a group of high-power switching circuits which are respectively responsible for positive and negative half cycles; the electromagnetic conversion coil L1 and the electromagnetic conversion coil L2 form a group of electromagnetic conversion coils with opposite polarities, the directions of magnetic fields generated when current flows in the two groups of coils are opposite, and the push-pull type electromagnetic heating system has the advantages of adjusting power in a large range, being easy to realize continuous low-power heating, and having small loss and high efficiency.
Description
Technical Field
The utility model relates to the technical field of push-pull type electromagnetic heating systems, in particular to a push-pull type electromagnetic heating system.
Background
Taking an electromagnetic oven used for heating in the existing kitchen as an example, the circuit modes mainly comprise a single-tube LC parallel resonance mode, a half-bridge mode and a full-bridge mode; the single-tube LC parallel resonance mode can not achieve low-power continuous output, when the output power is reduced to below 50%, only an intermittent heating mode can be used, the using effect is poor, in addition, because the single-tube LC parallel resonance mode is in a parallel resonance state, the back pressure is high, the control is difficult, the single-tube LC parallel resonance mode is influenced by power grid pulses and easily damages high-frequency switching tubes of the single-tube LC parallel resonance mode, and the damage rate is high. And half-bridge and full-bridge circuits are complicated and have high cost, and are only suitable for being used under the condition of high power.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provides a push-pull type electromagnetic heating system.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a push-pull type electromagnetic heating system is designed, and comprises a group of high-power switching devices K1, a group of high-power switching devices K2, a group of electromagnetic conversion coils L1 and an electromagnetic conversion coil L2, wherein the high-power switching devices K1 and K2 form a group of high-power switching circuits which are respectively responsible for positive and negative half cycles; the electromagnetic conversion coil L1 and the electromagnetic conversion coil L2 constitute a set of electromagnetic conversion coils with opposite polarities, and the directions of magnetic fields generated when current flows through the two sets of coils are opposite.
Preferably, only one of the high-power switch device K1 and the high-power switch device K2 is conducted at a time.
Preferably, the high power switch device K1 and the high power switch device K2 form a set of two sets of coils with opposite polarities, and the directions of magnetic fields generated when current flows through the two sets of coils are opposite.
Preferably, the electromagnetic conversion coil L1 and the electromagnetic conversion coil L2 are stacked in opposite directions to form a group of push-pull electromagnetic conversion coils.
Preferably, the electromagnetic conversion coil L1 and the electromagnetic conversion coil L2 are wound in opposite directions on the same plane to form a group of push-pull electromagnetic conversion coils.
Preferably, the electromagnetic conversion coil L1 and the electromagnetic conversion coil L2 have different sizes and are combined in opposite directions to form a group of push-pull electromagnetic conversion coils.
The push-pull type electromagnetic heating system provided by the utility model has the beneficial effects that:
1. the push-pull type electromagnetic heating system is extremely simple in circuit and easy to control, and is respectively responsible for the common grounding of two paths of high-power switching devices of positive and negative half cycles;
2. two paths of high-power switching devices are conducted in turn, only one path is conducted each time, the other path is cut off, the loss is small, and the efficiency is high;
3. the power can be adjusted in a large range because the resonant state is not influenced, and continuous low-power heating is easy to realize;
4. the back voltage is only 2 times of the input voltage, and the current flowing through each path of high-power switching device is only half of the input current, so that the high-power switching device is not easy to damage and has good stability.
Drawings
FIG. 1 is a first main control circuit diagram according to the present invention;
FIG. 2 is a second main control circuit diagram of the present invention;
FIG. 3 is a first winding diagram of an electromagnetic switching coil according to the present invention;
FIG. 4 is a second winding diagram of an electromagnetic switching coil according to the present invention;
fig. 5 is a third schematic winding diagram of an electromagnetic switching coil according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1-5, a push-pull electromagnetic heating system comprises a group of high-power switching devices K1, K2, a group of electromagnetic conversion coils L1 and L2, wherein the high-power switching devices K1 and K2 form a group of high-power switching circuits which are respectively responsible for positive and negative half cycles; the electromagnetic conversion coil L1 and the electromagnetic conversion coil L2 constitute a set of electromagnetic conversion coils with opposite polarities, and the directions of magnetic fields generated when current flows through the two sets of coils are opposite.
Only one path of the high-power switch device K1 and the high-power switch device K2 is conducted at each time.
The high-power switching device K1 and the high-power switching device K2 form a group of coils with opposite polarities, and magnetic fields generated when current flows through the coils are opposite in direction.
The electromagnetic conversion coil L1 and the electromagnetic conversion coil L2 are oppositely overlapped to form a group of push-pull electromagnetic conversion coils.
Example two
Referring to fig. 1-5, a push-pull electromagnetic heating system comprises a group of high-power switching devices K1, K2, a group of electromagnetic conversion coils L1 and L2, wherein the high-power switching devices K1 and K2 form a group of high-power switching circuits which are respectively responsible for positive and negative half cycles; the electromagnetic conversion coil L1 and the electromagnetic conversion coil L2 constitute a set of electromagnetic conversion coils with opposite polarities, and the directions of magnetic fields generated when current flows through the two sets of coils are opposite.
Only one path of the high-power switch device K1 and the high-power switch device K2 is conducted at each time.
The high-power switching device K1 and the high-power switching device K2 form a group of coils with opposite polarities, and magnetic fields generated when current flows through the coils are opposite in direction.
The electromagnetic conversion coil L1 and the electromagnetic conversion coil L2 are wound in opposite directions on the same plane to form a group of push-pull electromagnetic conversion coils.
EXAMPLE III
Referring to fig. 1-5, a push-pull electromagnetic heating system comprises a group of high-power switching devices K1, K2, a group of electromagnetic conversion coils L1 and L2, wherein the high-power switching devices K1 and K2 form a group of high-power switching circuits which are respectively responsible for positive and negative half cycles; the electromagnetic conversion coil L1 and the electromagnetic conversion coil L2 constitute a set of electromagnetic conversion coils with opposite polarities, and the directions of magnetic fields generated when current flows through the two sets of coils are opposite.
Only one path of the high-power switch device K1 and the high-power switch device K2 is conducted at each time.
The high-power switching device K1 and the high-power switching device K2 form a group of coils with opposite polarities, and magnetic fields generated when current flows through the coils are opposite in direction.
The electromagnetic conversion coil L1 and the electromagnetic conversion coil L2 have different sizes and are combined together in an opposite direction to form a group of push-pull electromagnetic conversion coils.
The working principle is as follows: k1, K2 constitute the high-power switch device responsible for positive and negative half cycle; the + Vin is a common current input point, when the high-power switching device K1 is switched on, K2 is cut off, current is input from the + Vin, flows through the point A of L1, flows out from the point B of L1 and forms a half-wave through the switching tube K1; when the high-power switching device K2 is switched on, K1 is switched off, current is input from + Vin, flows through the point A of L2, flows out from the point C of L2, and forms another half-wave through the switching tube K2; since the direction of the current flowing through L1 and L2 and the electromagnetic fields generated by them are opposite and alternate, the alternating electromagnetic field causes alternating electromagnetic eddy currents to form on the surface of the metal device within its magnetic field, thereby generating heat.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. A push-pull type electromagnetic heating system comprises a group of high-power switching devices K1 and K2 which are respectively responsible for positive and negative half cycles, a group of electromagnetic conversion coils L1 and an electromagnetic conversion coil L2 which have opposite polarities, and is characterized in that: the high-power switching device K1 and the high-power switching device K2 form a group of high-power switching circuits which are respectively responsible for positive and negative half cycles; the electromagnetic conversion coil L1 and the electromagnetic conversion coil L2 constitute a set of electromagnetic conversion coils with opposite polarities, and the directions of magnetic fields generated when current flows through the two sets of coils are opposite.
2. A push-pull electromagnetic heating system as claimed in claim 1, wherein: only one path of the high-power switch device K1 and the high-power switch device K2 is conducted every time.
3. A push-pull electromagnetic heating system as claimed in claim 1, wherein: the high-power switching device K1 and the high-power switching device K2 form a group of two groups of coils with opposite polarities, and the directions of magnetic fields generated when current flows through the two groups of coils are opposite.
4. A push-pull electromagnetic heating system as claimed in claim 1, wherein: the electromagnetic conversion coil L1 and the electromagnetic conversion coil L2 are oppositely overlapped to form a group of push-pull electromagnetic conversion coils.
5. A push-pull electromagnetic heating system as claimed in claim 1, wherein: the electromagnetic conversion coil L1 and the electromagnetic conversion coil L2 are wound in opposite directions on the same plane to form a group of push-pull electromagnetic conversion coils.
6. A push-pull electromagnetic heating system as claimed in claim 1, wherein: the electromagnetic conversion coil L1 and the electromagnetic conversion coil L2 have different sizes and are combined together in an opposite direction to form a group of push-pull electromagnetic conversion coils.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022796278.8U CN215529361U (en) | 2020-11-27 | 2020-11-27 | Push-pull type electromagnetic heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022796278.8U CN215529361U (en) | 2020-11-27 | 2020-11-27 | Push-pull type electromagnetic heating system |
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| Publication Number | Publication Date |
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| CN215529361U true CN215529361U (en) | 2022-01-14 |
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| CN202022796278.8U Active CN215529361U (en) | 2020-11-27 | 2020-11-27 | Push-pull type electromagnetic heating system |
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| CN (1) | CN215529361U (en) |
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