Electric furnace

Abstract

An electric furnace comprises a furnace shell and a control box, a furnace cavity is formed in the furnace shell, a heating body is arranged in the furnace cavity, the control box is connected to the outer surface of the furnace shell, a circuit board is installed in the control box, the circuit board and the heating body are electrically connected through an optical coupler, and the optical coupler comprises an optical transmitter and an optical receiver. An optical emitter connected with the circuit board is installed in the control box, an optical receiver connected with the heating body is installed in the oven cavity, a first light-emitting unit is arranged on the optical emitter, a second light-emitting unit is arranged on the optical receiver, and the first light-emitting unit and the second light-emitting unit are oppositely arranged. An optical signal emitted by the first light-emitting unit is received by the second light-emitting unit; the heating body in the furnace chamber does not influence the electric control device in the control box at all; the optical coupler is used for replacing a wire to achieve electrical connection and communication between the heating body and the circuit board, and the traditional structure connected through the wire is simplified.

Description

Technical Field

[0001] The utility model relates to an electric furnace, in particular to an electric furnace. Background Art

[0002] After the applicant conducted extensive patent searches and learned about products currently on the market, it was discovered that existing electric furnaces have proposed various solutions to solve the heat dissipation or insulation problems of electronic control devices and to facilitate maintenance, replacement or upgrades.

[0003] For example, in the retrieved existing patent document 1: CN201620615858.3, an induction cooker is convenient for replacing the circuit board; by providing a main circuit board accommodating cavity on the outer shell and placing the main circuit board in the main circuit board accommodating cavity, the maintenance, replacement, inspection and disposal of the circuit board are made more convenient.

[0004] For example, in the retrieved existing patent document 2, CN201520041724.0, an induction cooker; by configuring the furnace body to consist of a main casing and a sub-casing located outside the main casing, the circuit control module is arranged in the sub-casing, and the electromagnetic wire reel is arranged in the main casing, thereby reducing the influence of the heating of the electromagnetic wire reel and the heating of the circuit control module on each other.

[0005] In addition, in Patent Documents 1 and 2, the transmission between the electric furnace and the heating element is controlled by wires, so a mechanical coupler is still required to achieve conductivity. Such a structure is relatively complex and imposes certain restrictions on the shape of the product.

[0006] The utility model provides an electric furnace, which adopts a structure different from the above and attempts to solve the problem of heat insulation of the electric control device of the electric furnace and the problem of convenient maintenance, replacement or upgrading. Summary of the invention

[0007] The purpose of the utility model is to solve the above-mentioned existing problems and to provide an electric furnace, so that the electric control device of the electric furnace is arranged in a control box, and the control box belongs to a space independent of the outside of the furnace cavity. The heating element in the furnace cavity will not have any temperature influence on the electric control device in the control box. At the same time, the control box is connected with a magnetic component, which is convenient for disassembly, assembly and replacement, and the control box and the furnace shell form a fixed isolation distance; the optical coupler enables wireless transmission between the circuit board and the heating element.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] An electric furnace comprises a furnace shell and a control box. A furnace cavity is arranged in the furnace shell. A heating element is arranged in the furnace cavity. The control box is connected to the outer surface of the furnace shell. A circuit board is installed in the control box. The electric furnace is characterized in that the circuit board and the heating element are electrically connected through an optical coupler. The optical coupler comprises an optical transmitter and an optical receiver. An optical transmitter connected to the circuit board is installed in the control box. An optical receiver connected to the heating element is installed in the furnace cavity. A first light-emitting unit is arranged on the optical transmitter. A second light-emitting unit is arranged on the optical receiver. The first light-emitting unit and the second light-emitting unit are arranged opposite to each other, and an optical signal emitted by the first light-emitting unit is received by the second light-emitting unit.

[0010] The control box is connected to the outer surface of the furnace shell through a connecting piece, and an isolation distance is formed between the fixed control box and the furnace shell.

[0011] The connecting member comprises a first magnet and a second magnet which are magnetically attracted to each other, the first magnet is arranged on the outer surface of the furnace shell, and the second magnet is arranged on the control box.

[0012] A first light-transmitting hole is formed on the control box, and the first light-emitting unit extends into the first light-transmitting hole;

[0013] A second light-transmitting hole is provided on the furnace shell and is arranged opposite to the first light-transmitting hole. The second light-emitting unit extends into the second light-transmitting hole.

[0014] A guide cylinder is extended from the first light-transmitting hole into the control box, and the first light-emitting unit extends into the guide cylinder.

[0015] A heat-insulating cover is arranged in the furnace cavity outside the optical receiver.

[0016] The circuit board includes a power module and a control module, and the power module and the control module are respectively composed of two independent circuit boards.

[0017] The circuit board includes a power module and a control module, and the power module and the control module are arranged on a circuit board.

[0018] The heating element is a stove plate of an electric ceramic stove, or a coil plate assembly of an induction cooker, or a heating plate or a graphene heating element

[0019] The utility model is beneficial in that:

[0020] (1) The utility model discloses an electric furnace, which realizes electrical connection and communication between a heating element and a circuit board by using an optical coupler instead of wires, thereby simplifying the traditional structure connected by wires; in addition, the magnetic connection structure enables the control box to be separated from the furnace shell at any time for maintenance or upgrading.

[0021] (2) The utility model discloses an electric furnace, in which an electric control device is arranged in a control box. The control box is a space independent of the furnace cavity. The heating element in the furnace cavity will not have any temperature influence on the electric control device in the control box, thus isolating the influence of the heating element on the electric control device, effectively improving the stability and service life of the electric control device, and enabling the electric control device in the control box to operate at a reasonable temperature for a long time.

[0022] (3) In the utility model, a control box is fixedly connected to the furnace shell by a connecting piece, and a fixed isolation distance is formed on the furnace shell, so that the control box can be considered as a whole during the design stage of the furnace shell appearance, that is, the connecting piece is used as a part of the electric furnace appearance, and two independent spaces are formed functionally.

[0023] (4) The utility model provides an electric stove, wherein the control box and the connecting parts are of a detachable structure, so that different stove shells and different control boxes can be freely matched. The advantage brought about is that in addition to the free matching of the appearance, the same stove shell can be matched with different functions or control schemes to realize different cooking modes, thus achieving the effect of one machine with multiple uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural sectional view of the first embodiment of the utility model.

[0025] Figure 2 It is a structural exploded view of the first embodiment of the utility model.

[0026] Figure 3 It is a structural exploded view of the first embodiment of the utility model.

[0027] Figure 4 It is a structural schematic diagram of one implementation mode of the circuit board in the utility model.

[0028] Figure 5 It is a structural schematic diagram of another implementation mode of the circuit board in the utility model.

[0029] Figure 6 It is a structural exploded view of the second embodiment of the utility model. DETAILED DESCRIPTION

[0030] The utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0031] First embodiment:

[0032] like Figure 1-Figure 5As shown, an electric furnace includes a furnace shell 1 and a control box 2. A furnace cavity 101 is provided in the furnace shell 1. A heating element 3 is provided in the furnace cavity 101. The control box 2 is connected to the outer surface of the furnace shell 1. A circuit board 4 is installed in the control box 2. The circuit board 4 and the heating element 3 are electrically connected through an optical coupler. The optical coupler includes an optical transmitter 5 and an optical receiver 6. An optical transmitter 5 connected to the circuit board 4 is installed in the control box 2. An optical receiver 6 connected to the heating element 3 is installed in the furnace cavity 101. A first light-emitting unit 501 is provided on the optical transmitter 5. A second light-emitting unit 601 is provided on the optical receiver 6. The first light-emitting unit 501 and the second light-emitting unit 601 are arranged relative to each other, and the optical signal emitted by the first light-emitting unit 501 is received by the second light-emitting unit 601.

[0033] The electrical connection and communication between the heating element 3 and the circuit board 4 are realized by replacing the wire with an optical coupler, thereby simplifying the traditional structure connected by wires.

[0034] The control box 2 is a space independent of the furnace cavity 101. The heating element 3 in the furnace cavity 101 will not have any temperature influence on the electronic control device in the control box 2, thereby isolating the influence of the heating element 3 on the electronic control device, effectively improving the stability and service life of the electronic control device, and enabling the electronic control device in the control box 2 to operate at a reasonable temperature for a long time.

[0035] The first light emitting unit 501 can only transmit information but not receive information; the second light emitting unit 601 can only receive information but not transmit information.

[0036] The control box 2 is connected to the outer surface of the furnace shell 1 through a connecting piece 7 , and an isolation distance 11 is formed between the fixed control box 2 and the furnace shell 1 .

[0037] The connecting member 7 includes a first magnet 8 and a second magnet 9 that are magnetically attracted to each other. The first magnet 8 is arranged on the outer surface of the furnace shell 1, and the second magnet 9 is arranged on the control box 2. The magnetic connection structure allows the control box 2 to be separated from the furnace shell 1 at any time for maintenance or upgrading.

[0038] The control box 2 is provided with a first light-transmitting hole 201, and the first light-emitting unit 501 extends into the first light-transmitting hole 201;

[0039] The furnace shell 1 is provided with a second light-transmitting hole 102 which is arranged opposite to the first light-transmitting hole 201 , and the second light-emitting unit 601 extends into the second light-transmitting hole 102 .

[0040] A guide tube 202 extends from the first light-transmitting hole 201 into the control box 2 , and the first light-emitting unit 501 extends into the guide tube 202 .

[0041] A heat insulation cover 10 is arranged in the furnace cavity 101 outside the optical receiver 6 .

[0042] The circuit board 4 includes a power module 401 and a control module 402 , and the power module 401 and the control module 402 are respectively composed of two independent circuit boards.

[0043] The circuit board 4 includes a power module 401 and a control module 402 , and the power module 401 and the control module 402 are arranged on a circuit board.

[0044] The heating element 3 is a stove plate of an electric ceramic stove, or a coil plate assembly of an induction cooker, or a heating plate or a graphene heating element.

[0045] Second embodiment:

[0046] Regarding the connecting member 7, in addition to the first embodiment using a magnet for disassembly and assembly, it can also use a common structural member, such as Figure 6 As shown, by opening holes A and B on opposite sides of the furnace shell 1 and the control box 2, or setting a traditional connection structure (snap-on, clamping, connecting column, etc.), the connecting member 7 is set to a structure that can cooperate with screws or other fasteners, and the through holes A and B on both sides of the furnace shell 1 and the control box 2 are respectively fixed to the connecting member 7 by fasteners (not shown in the figure), so that the control box 2 can be installed on the outer surface of the furnace shell 1.

[0047] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the protection scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the protection scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. An electric furnace, comprising a furnace shell (1) and a control box (2), wherein a furnace cavity (101) is arranged in the furnace shell (1), a heating element (3) is arranged in the furnace cavity (101), the control box (2) is connected to the outer surface of the furnace shell (1), and a circuit board (4) is installed in the control box (2), wherein: The circuit board (4) and the heating element (3) are electrically connected via an optical coupler, the optical coupler comprising an optical transmitter (5) and an optical receiver (6), the control box (2) is provided with an optical transmitter (5) connected to the circuit board (4), the furnace cavity (101) is provided with an optical receiver (6) connected to the heating element (3), the optical transmitter (5) is provided with a first light-emitting unit (501), the optical receiver (6) is provided with a second light-emitting unit (601), the first light-emitting unit (501) and the second light-emitting unit (601) are arranged relative to each other, and the optical signal emitted by the first light-emitting unit (501) is received by the second light-emitting unit (601).

2. An electric furnace according to claim 1, characterized in that: The control box (2) is connected to the outer surface of the furnace shell (1) via a connecting piece (7), and an isolation distance (11) is formed between the fixed control box (2) and the furnace shell (1).

3. An electric furnace according to claim 2, characterized in that: The connecting member (7) comprises a first magnet (8) and a second magnet (9) which are magnetically attracted to each other, the first magnet (8) being arranged on the outer surface of the furnace shell (1), and the second magnet (9) being arranged on the control box (2).

4. An electric furnace according to claim 1, characterized in that: A first light-transmitting hole (201) is provided on the control box (2), and the first light-emitting unit (501) extends into the first light-transmitting hole (201); The furnace shell (1) is provided with a second light-transmitting hole (102) arranged opposite to the first light-transmitting hole (201), and the second light-emitting unit (601) extends into the second light-transmitting hole (102).

5. An electric furnace according to claim 4, characterized in that: A guide tube (202) extends from the first light-transmitting hole (201) into the control box (2), and the first light-emitting unit (501) extends into the guide tube (202).

6. An electric furnace according to claim 1 or 4, characterized in that: A heat insulation cover (10) is arranged in the furnace cavity (101) outside the optical receiver (6).

7. An electric furnace according to claim 1, characterized in that: The circuit board (4) comprises a power module (401) and a control module (402), wherein the power module (401) and the control module (402) are respectively composed of two independent circuit boards.

8. The electric furnace according to claim 1, characterized in that: The circuit board (4) comprises a power module (401) and a control module (402), and the power module (401) and the control module (402) are arranged on a circuit board.

9. An electric furnace according to claim 1, characterized in that: The heating element (3) is a stove plate of an electric ceramic stove, or a coil plate assembly of an induction cooker, or a heating plate or a graphene heating element.

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