CN216521823U - Electromagnetic range - Google Patents
Electromagnetic range Download PDFInfo
- Publication number
- CN216521823U CN216521823U CN202122476754.2U CN202122476754U CN216521823U CN 216521823 U CN216521823 U CN 216521823U CN 202122476754 U CN202122476754 U CN 202122476754U CN 216521823 U CN216521823 U CN 216521823U
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- power cord
- bottom case
- induction cooker
- circuit board
- twisted
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Abstract
One embodiment of the present invention relates to an induction cooker. The electromagnetic stove comprises a machine shell and a coil assembly positioned in the machine shell, wherein the machine shell comprises a bottom shell, a panel which is arranged above the bottom shell and covers the bottom shell, a circuit board positioned in the bottom shell and a power line which is electrically connected with the circuit board, and the power line is twisted and wired in a twisted pair mode. The electric wave radiated by each wire in transmission can be counteracted by the electric wave sent by the other wire, thus reducing the conduction disturbance noise of an electromagnetic range, reducing the interference to an external power grid and being beneficial to passing EMC test.
Description
[ technical field ] A
The application relates to the field of induction cookers.
[ background of the utility model ]
With the improvement of living standard, the electromagnetic range becomes an indispensable household appliance for people. However, long-time and short-distance operation is a unique characteristic of using the induction cooker by consumers in China, so more and more consumers and manufacturers begin to concern the problem of electromagnetic radiation of the induction cooker. When the induction cooker works, electromagnetic interference can be generated on other electrical equipment in the working environment, and the normal work of other equipment is influenced.
[ summary of the utility model ]
It is an object of an embodiment of the present invention to provide an improved induction cooker.
The embodiment of the utility model relates to an induction cooker. The electromagnetic stove comprises a machine shell and a coil assembly positioned in the machine shell, wherein the machine shell comprises a bottom shell, a panel which is arranged above the bottom shell and covers the bottom shell, a circuit board positioned in the bottom shell and a power line which is electrically connected with the circuit board, and the power line is twisted and wired in a twisted pair mode.
With this structure, the power line is twisted in a twisted pair manner, and the electric wave radiated from each wire during transmission is cancelled by the electric wave emitted from the other wire. This can effectively reduce noise interference, reduces the power cord and produces the possibility of low frequency noise because of receiving magnetic field interference to, can reduce induction cooker conduction disturbance noise, reduce the interference to external electric wire netting, be favorable to passing EMC test.
According to an exemplary embodiment of the present invention, the power line includes a live wire and a neutral wire, and the live wire and the neutral wire are twisted and wired in a twisted pair manner.
The zero line and the live line are twisted and wired in a twisted pair mode, and electric waves radiated by the zero line in transmission can be counteracted by electric waves emitted by the live line. This can effectively reduce noise interference, reduces the power cord and produces the possibility of low frequency noise because of receiving magnetic field interference to, can reduce induction cooker conduction disturbance noise, reduce the interference to external electric wire netting, be favorable to passing EMC test.
Twisted pair is one of the most commonly used transmission media in integrated wiring engineering. Two insulated copper wires are twisted together according to a certain density, and the electric wave radiated by each wire in transmission can be counteracted by the electric wave emitted by the other wire, thereby effectively reducing the possibility that the power line is interfered by a magnetic field and the possibility that the power line generates low-frequency noise due to the interference of the magnetic field.
According to an exemplary embodiment of the present invention, the power line includes a first portion inside the bottom case and a second portion outside the bottom case, and the first portion is twisted in a twisted pair manner.
When the power supply is powered on, the magnetic field in the bottom shell is larger than the magnetic field outside the bottom shell, the power line in the bottom shell is twisted and wired in a twisted pair mode, the possibility that the power line is interfered by the magnetic field can be effectively reduced, the possibility that the power line generates low-frequency noise due to the interference of the magnetic field is effectively reduced,
according to an exemplary embodiment of the present invention, the power line further includes a heat shrink tube sleeved outside the power line. Therefore, the heat shrink tube can fix the power line wired in a twisted pair mode, and the wiring mode of the power line is prevented from being scattered.
According to an exemplary embodiment of the present invention, the bottom case is made of a metal material, and the power line is closely attached to a side of the bottom case facing the panel. Therefore, the bottom shell is grounded, noise can be effectively conducted by the bottom shell, and low-frequency noise of the power line is reduced.
According to an exemplary embodiment of the present invention, the bottom case includes a bottom wall and a side wall connected to an edge of the bottom wall and perpendicular to the bottom wall, and the power line is attached to a side of the bottom wall facing the panel.
According to an exemplary embodiment of the present invention, the power cord fixing device further includes a plurality of power cord fixing devices for fixing the power cord to the bottom case while closely adhering to the bottom case. Therefore, the power line fixing device not only can fix the power line to place the power line to shake, but also can lead the part of the power line positioned in the bottom shell to be closely attached to the bottom shell,
according to an exemplary embodiment of the present invention, the power line fixing device includes a line card, and the line card
According to an exemplary embodiment of the present invention, the power cord connector further includes a power cord inlet provided on the bottom case, and the power cord passes through the power cord inlet and extends out of the bottom case. Therefore, one end of the power line, which is positioned in the shell, is connected with the circuit board, and one end of the power line, which is positioned outside the shell, extends into the shell through the power line inlet to be connected with the socket.
According to an exemplary embodiment of the present invention, the circuit board is located below the coil assembly, and a projection of the circuit board and the coil assembly on the bottom case at least partially overlap. This can reduce the circuit board and coil pack occupation space, improves space utilization for the induction cooker size is littleer to become possible.
[ description of the drawings ]
Fig. 1 is a partially-structured perspective view of an induction cooker according to an embodiment of the present invention;
FIG. 2 is an exploded view of a coil assembly according to one embodiment of the present invention;
reference numerals:
Power cord fixing device 50 for power cord inlet 13 of metal support plate 22
[ detailed description ] embodiments
In order to further understand the objects, structures, features and functions of the present application, the following embodiments are described in detail.
When the electromagnetic stove is electrified, the coil can generate a high-frequency alternating magnetic field, and according to the electromagnetic induction theory, the power line is exposed in the magnetic field to generate induced electromotive force or induced current. This will cause to transmit the low frequency noise rise in harassment, can produce harm to electric wire netting or other electrical apparatus, influence the electromagnetism kitchen and pass EMC test. The application provides a corresponding technical scheme based on the method.
As shown in fig. 1, the electromagnet includes a housing 100 and various electrical components located within the housing 100. The various electrical devices may include the coil assembly 20, the circuit board 30, and the power cord 40 connected to the circuit board 30, among others.
The cabinet 100 includes a bottom case 10 and a panel (not shown) located above the bottom case 10, the panel being generally plate-shaped and made of a glass-ceramic material to cover an upper portion of the bottom case 10. In use, the cooktop to be heated is placed over the panel.
The bottom case 10 includes a bottom wall 11 and 4 side walls 12 connecting edges of the bottom wall 11 and perpendicular to the bottom wall 11, and the bottom case 10 is made of a metal material. The bottom wall 11 and the 4 side walls 12 together define a space for receiving various electrical devices.
As shown in fig. 2, the coil assembly 20 includes a coil 21 and a metal support plate 22 located below the coil 21, the metal support plate 22 being used to support the coil 21 and shield electromagnetic signals. The coil assembly 20 further includes a magnet between the coil 21 and the metal support plate 22 to focus the magnetic field.
The circuit board 30 is electrically connected to a power cord 40, and one end of the power cord 40 is connected to the circuit board 30 and the other end is connected to the socket. A power cord 40 inlet is formed on the bottom wall 11 of the bottom case 10, and the power cord 40 can extend out of the bottom case 10 through the power cord 40 inlet.
The power cord 40 includes a first portion located inside the cabinet 100 and a second portion located outside the cabinet 100. Specifically, the first portion includes a portion from the circuit board 30 to the inlet of the power cord 40, and the second portion includes a portion extending out from the inlet of the power cord 40.
The power supply line 40 is twisted in a twisted pair manner. Specifically, the power cord 40 includes a neutral wire and a live wire, which are twisted in a twisted pair manner.
The zero line and the live line are twisted and wired in a twisted pair mode, and electric waves radiated by the zero line in transmission can be counteracted by electric waves emitted by the live line. This can effectively reduce noise interference, reduces the possibility that power cord 40 produces low frequency noise because of receiving magnetic field interference to, can reduce induction cooker conduction disturbance noise, reduce the interference to external electric wire netting, be favorable to passing EMC test.
In the present embodiment, the second portion of the power line 40 inside the bottom case 10 is twisted in a twisted pair manner. When the power is turned on, the magnetic field inside the bottom case 10 is larger than the magnetic field outside the bottom case 10, and the power line 40 inside the bottom case 10 is twisted and wired in a twisted pair manner, so that the possibility of the power line 40 being interfered by the magnetic field can be effectively reduced, and the possibility of the power line 40 generating low-frequency noise due to the interference of the magnetic field can be effectively reduced.
And a heat shrink tube sleeved outside the power line 40. The heat shrinkage tube may fix the power line 40 wired in a twisted pair manner, preventing the wiring manner of the power line 40 from being scattered.
The bottom case 10 is made of a metal material and has good noise conductivity. The power cord 40 is closely attached to the side of the bottom case 10 facing the panel, and specifically, the power cord 40 is closely attached to the side of the bottom wall 11 facing the panel. Accordingly, since the bottom case 10 is grounded, the bottom case 10 can effectively conduct noise, reducing low frequency noise of the power line 40.
In order to make the power cord 40 tightly contact with the side of the bottom wall 11 facing the panel, a plurality of power cord 40 fixing devices are provided, and the power cord 40 fixing devices are used for tightly contacting the power cord 40 with the bottom shell 10 and fixing the power cord 40 to the bottom shell 10.
The power cord 40 securing means may include different securing means and the power cord 40 securing means may include screws, snaps, line clips or adhesive tape.
As shown in fig. 1, the circuit board 30 is located below the coil assembly 20, and in the vertical direction, the circuit board 30 and the coil assembly 20 overlap, and the circuit board 30 and the coil assembly 20 at least partially overlap with each other in projection onto the bottom case 10. This can reduce the space occupied by the circuit board 30 and the coil block 20, improve the space utilization, and make it possible to make the size of the induction cooker smaller.
The power line inlet 13 is located at one side of the coil block 20. The portion of the power cord 40 inside the bottom case 10 is snugly fixed to the bottom wall 11 by the power cord 40 fixing means. In the present embodiment, the power cord 40 fixture includes a line card. This can reduce the possibility of the power cord 40 rattling.
The various embodiments described in connection with fig. 1-2 may be combined with each other in any given way to achieve the advantages of the utility model. In addition, the present invention is not limited to the illustrated embodiments, and other means than those shown may be generally used as long as the same effects are obtained.
Claims (10)
1. An induction cooker comprising a case (100) and a coil assembly located in the case (100), the case (100) comprising a bottom case (10) and a panel mounted above the bottom case (10) and covering the bottom case (10), a circuit board (30) located in the bottom case (10) and a power supply line electrically connected to the circuit board (30), characterized in that the power supply line (40) is twisted-wired in a twisted pair manner.
2. The induction cooker according to claim 1, wherein said power cord (40) comprises a live wire and a neutral wire, said live wire and said neutral wire being twisted in a twisted pair.
3. The induction cooker according to claim 1, wherein said power supply line (40) comprises a first portion inside said bottom case (10) and a second portion outside said bottom case (10), said first portion being twisted in a twisted pair manner.
4. The induction cooker according to claim 2, further comprising a heat shrink tube sleeved outside the power line (40).
5. The induction hob according to claim 1, characterized in, that the bottom shell (10) is made of a metal material, the power line (40) clings to a side of the bottom shell (10) facing the panel.
6. The induction cooker according to claim 5, characterized in that said bottom shell (10) comprises a bottom wall (11) and a side wall (12) connected to the edge of said bottom wall (11) and perpendicular to said bottom wall (11), said power cord (40) being applied against the side of said bottom wall (11) facing said panel.
7. The induction cooker according to claim 1, further comprising a plurality of power cord fixing means (50), said power cord fixing means (50) being for fixing said power cord against said bottom case (10) and to said bottom case (10).
8. The induction cooker according to claim 7, wherein said power cord fixing means (50) comprises a screw, a snap, a wire clip or an adhesive tape.
9. The induction cooker according to claim 1, further comprising a power cord inlet (13) provided on the bottom case (10), wherein the power cord (40) is extended out of the bottom case (10) through the power cord inlet (13).
10. The induction hob according to claim 1, characterized in, that the circuit board (30) is located below the coil assembly (20), the circuit board (30) and the coil assembly (20) having a projection on the bottom shell (10) at least partially overlapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122476754.2U CN216521823U (en) | 2021-10-14 | 2021-10-14 | Electromagnetic range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122476754.2U CN216521823U (en) | 2021-10-14 | 2021-10-14 | Electromagnetic range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216521823U true CN216521823U (en) | 2022-05-13 |
Family
ID=81522479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122476754.2U Active CN216521823U (en) | 2021-10-14 | 2021-10-14 | Electromagnetic range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216521823U (en) |
-
2021
- 2021-10-14 CN CN202122476754.2U patent/CN216521823U/en active Active
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