CN204757046U - Induction cooker and heat radiation structure thereof - Google Patents

Abstract

The utility model discloses an electromagnetic cooker and its heat dissipation structure. The heat dissipation structure comprises: a plurality of air inlet holes (831) arranged on the bottom plate (83) of the shell (8) of the electromagnetic cooker, fixed on the bottom plate ( 83) on the main box (84), the main box (84) is provided with a partition (841) that divides the main box (84) into a first cavity and a second cavity, and the control of the electromagnetic range The circuit board (86) is fixed in the first cavity, a cold air outlet (8431) and a hot air outlet are respectively arranged on two opposite side plates of the second cavity, and a second A cooling fan (844), and a plurality of cooling fins (842) connected to the lower side of the partition (841) are arranged in the second cavity. The utility model has the advantages of simple structure, good heat dissipation effect, good adaptability and low implementation cost, and is beneficial to prolonging the service life of the electromagnetic cooker and improving the reliability of the electromagnetic cooker.

Description

Electromagnetic cooker and heat dissipation structure thereof

technical field

The utility model relates to kitchen appliances, in particular to an electromagnetic cooker and a heat dissipation structure of the electromagnetic cooker.

Background technique

The electromagnetic cooker using electromagnetic induction heating has many advantages such as saving electric energy, high thermal efficiency, cleaning and environmental protection, convenience and durability, and has been widely used in people's daily life. The electromagnetic cooker generates an alternating magnetic field through the electromagnetic coil; Made of nickel-conducting magnetic material, the alternating magnetic field causes the ferromagnetic pot placed on it to generate eddy current heat, which plays a heating role.

However, at present, a big problem closely related to the life of the electromagnetic cooker is the heat dissipation of the electromagnetic cooker, especially for the heat dissipation of the control circuit board in the electromagnetic cooker. The control circuit board of the induction cooker is installed in the lower part of the inner cavity of the induction cooker, and the induction cooker is placed in the kitchen, and the environment is relatively humid. If direct convection heat dissipation is adopted, the humid air in the kitchen will easily bring moisture into the induction cooker. The internal cavity of the movement causes the short circuit of the control circuit board to fail; if the heat sink is used for heat dissipation, it is considered that some high-power devices need to be welded on the control circuit board, and the temperature of the high-power devices is higher than that in the fully sealed movement. Therefore, if the high-power devices are not quickly dissipated, the temperature of the heating devices on the control circuit board will be high and the heating devices will be damaged, thereby reducing the service life of the induction cooker.

Utility model content

In order to overcome the defects of the prior art, the utility model proposes an electromagnetic cooker and a heat dissipation structure of the electromagnetic cooker with simple structure, good heat dissipation effect and low implementation cost, which is beneficial to prolonging the service life of the electromagnetic cooker.

The utility model is realized by adopting the following technical solutions: a heat dissipation structure of an electromagnetic cooker, which includes: a plurality of air inlet holes arranged on the bottom plate of the shell of the electromagnetic cooker, a main box fixed on the bottom plate, and the main box There is a partition that divides the main chassis into a first cavity and a second cavity, the control circuit board of the induction cooker is fixed in the first cavity, and the two opposite side plates of the second cavity A cold air outlet and a hot air outlet are respectively arranged on the top, and a second heat dissipation fan is installed on the cold air outlet, and a plurality of cooling fins connected to the lower side of the partition are arranged in the second cavity.

Wherein, the control circuit board is fixed on the upper side of the partition.

Wherein, the heat dissipation structure of the induction cooker further includes an air duct arranged between the hot air outlet and the housing.

Wherein, the partition is L-shaped.

Wherein, the main chassis is fixedly connected to the bottom plate by several L-shaped connecting pieces.

In addition, the utility model proposes an electromagnetic cooker, which at least includes a casing, a movement installed in the casing, and a control circuit board; The air guiding device and the pot ring on both sides, the electromagnetic wire reel accommodated in the wire slot of the wire reel support, the first cooling fan fixedly connected to the air guiding device, and the panel fixed on the pot ring And the heat insulation cotton arranged between the panel and the wire reel support; a number of air inlet holes arranged on the bottom plate of the shell of the electromagnetic cooker, fixed on the main box on the bottom plate, the main box is equipped with There is a partition that divides the main chassis into a first cavity and a second cavity, the control circuit board of the electromagnetic range is fixed in the first cavity, and the two opposite side plates of the second cavity are respectively A cold air outlet and a hot air outlet are provided, a second heat dissipation fan is installed on the cold air outlet, and a plurality of cooling fins connected to the lower side of the partition are arranged in the second cavity.

Wherein, the electromagnetic coil is a braided copper wire in which multiple strands of enamelled copper wires are twisted and woven into a mesh structure.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model divides the main box into two independent cavities, one of which is used to seal and fix the control circuit board to prevent the water vapor entering the shell of the electromagnetic range from making the control circuit board invalid, and the other cavity is provided with a number of cooling fins , and with the help of the second heat dissipation fan to accelerate the heat exchange between the heat sink and the external cold air, it has the advantages of simple heat dissipation structure and high heat dissipation efficiency, which is beneficial to prolong the service life of the control circuit board; A number of air inlet holes are set on the top to facilitate the entry of cold air, and it can prevent foreign objects (such as scattered vegetable leaves, etc.) The heat dissipation performance of the braided copper wire is better, which is conducive to improving the working stability and reliability of the induction cooker. In addition, the heat dissipation structure proposed by the utility model is widely applicable to high-power electromagnetic cookers of various structures, and has the advantage of good prospects for popularization and application.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of the heat dissipation structure of the electromagnetic cooker of the present invention.

Fig. 2 is a schematic diagram of an exploded structure of the main chassis in Fig. 1;

Fig. 3 is a partial sectional structural schematic diagram of the main chassis in Fig. 1;

Fig. 4 is a three-dimensional structural schematic diagram of the core of the electromagnetic cooker in one embodiment of the present invention.

FIG. 5 is a schematic diagram of an exploded structure corresponding to FIG. 4 .

Detailed ways

The utility model provides an electromagnetic cooker and a heat dissipation structure of the electromagnetic cooker with simple structure, good heat dissipation effect and low realization cost, which is beneficial to prolonging the service life of the electromagnetic cooker.

As shown in Fig. 1, Fig. 2 and Fig. 3, the induction cooker includes: a casing 8 (only the bottom plate 83 of the casing is drawn in Fig. 1, and other side plates connected to the bottom plate 83 are not shown); The movement of body 8, the control circuit board 86 for controlling the work of the movement and the main chassis 84 for controlling the heat dissipation of the circuit board. A plurality of smaller air inlet holes 831 are provided on the bottom plate 83 of the housing 8 of the induction cooker, and the position close to the air inlet holes 831 is fixedly connected to the main chassis 84 through an L-shaped connecting piece 87 . In the main chassis 84, an L-shaped partition 841 divides the inner cavity of the main chassis 84 into a first cavity and a second cavity, and a control circuit for controlling the work of the movement is installed in the first cavity. plate 86, and the control circuit board 86 is sealed and fixed in the first cavity of the main chassis 84 through the cover plate 845; a cold air port is provided on the side plate 843 at one end of the second cavity of the main chassis 84 8431, the side plate at the other end of the second cavity is provided with a hot air port (not shown in the figure), the second heat dissipation fan 844 is installed on the cold air port 8431, and the cold air port 8431 and the second cavity A plurality of cooling fins 842 connected to the lower side of the partition plate 841 are provided between the hot air outlets.

In order to conveniently discharge heat from the housing 8 of the electromagnetic range through the hot air outlet, an air duct 85 can be connected to the hot air outlet of the main chassis 84 to lead the hot air to the outside of the housing 8 .

Wherein, the control circuit board 86 is fixedly installed on the upper side of the partition 841, and is sealed in the first cavity of the main chassis 84 by the cover plate 845, which can ensure that the control circuit board 86 will not be affected by water vapor entering the housing 8, etc. This causes a short circuit and improves the working life and reliability of the control circuit board 86 ; in addition, the heat generated by the high-power devices on the control circuit board 86 is conducted to the heat sink 842 through the partition 841 . The cold air enters the housing 8 of the induction cooker from the air inlet hole 831 on the base plate 83, and the cold air is sent into the second cavity of the main chassis 84 through the second cooling fan 844 positioned above the air inlet hole 831 side. , after flowing through the heat sink 842, it exchanges heat with the heat sink 842, and the hot air carrying heat is exported from the hot air outlet to the outside of the housing 8 through the air duct 85, so that the control circuit board 86 will not fail due to overheating, improving the The service life of the induction hob.

As shown in FIG. 4 and FIG. 5 , the core of the induction cooker is installed in the housing 8 , and the electromagnetic coil 4 on the core is electrically connected to the control circuit board 86 . Specifically, in an electromagnetic range used in conjunction with a frying pan, the core of the electromagnetic range at least includes: a wire reel support 1; The wind device 2; the first cooling fan 3 fixedly connected with the air guiding device 2; the electromagnetic wire reel 4 arranged in the wire groove of the wire reel support 1, the electromagnetic wire reel 4 is electrically connected with the control circuit board 86; The pan ring 5 connected to the pan bracket 1 has a plurality of studs 51 on the lower side of the pan pan 5, and the studs 51 pass through the panel fixing holes 111 on the pan bracket 1, and are screwed to the studs 51 with screws. The end of the pot ring 5 and the coil support 1 are fixed; the panel 6 (panel 6 generally adopts glass ceramics) fixed on the pot ring 5; the heat insulation cotton arranged between the panel 6 and the coil support 1 (in the figure Insulation cotton not shown).

Wherein, the electromagnetic coil 4 is a braided copper wire in which multiple strands of enamelled copper wires are twisted and woven into a mesh structure. The braided copper wire has better heat dissipation performance and improves the working stability and reliability of the electromagnetic cooker.

In summary, compared with the prior art, the utility model has the following beneficial technical effects: the utility model divides the main box into two independent cavities, one of which is used to seal and fix the control circuit board to prevent it from entering the electromagnetic range The water vapor in the casing makes the control circuit board invalid, and a number of cooling fins are set in the other cavity, and the heat exchange between the cooling fins and the external cold air is accelerated by means of the second cooling fan, which has the advantages of simple heat dissipation structure and high heat dissipation efficiency. It is conducive to prolonging the service life of the control circuit board; the electromagnetic cooker proposed by the utility model is provided with a number of air inlet holes on the bottom plate to facilitate the entry of cold air, and can prevent sundries outside the shell (such as scattered vegetable leaves, etc.) from entering the shell body and affect the normal use of the induction cooker; braided copper wire is used as the electromagnetic coil of the induction cooker, and the braided copper wire has better heat dissipation performance, which is conducive to improving the working stability and reliability of the induction cooker.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. the radiator structure of an electromagnetic stove, it is characterized in that, comprise: be arranged on the some fresh air inlets (831) on the base plate (83) of the housing (8) of electromagnetic stove, be fixed on the mainframe box (84) on described base plate (83), the dividing plate (841) described mainframe box (84) being divided into the first cavity and the second cavity is provided with in described mainframe box (84), the control circuit board (86) of electromagnetic stove is fixed in described first cavity, the two opposite sides plate of described second cavity arranges cold wind mouth (8431) and hot-air mouth respectively, at upper installation second radiator fan (844) of described cold wind mouth (8431), and in described second cavity, be provided with the some fin (842) connecting described dividing plate (841) downside.

2. the radiator structure of electromagnetic stove according to claim 1, it is characterized in that, described control circuit board (86) is fixed on the upper side of described dividing plate (841).

3. the radiator structure of electromagnetic stove according to claim 1, is characterized in that, also comprise the air channel (85) be arranged between described hot-air mouth and described housing (8).

4. the radiator structure of electromagnetic stove according to claim 1, it is characterized in that, described dividing plate (841) is L shape.

5. the radiator structure of electromagnetic stove according to claim 1, it is characterized in that, described mainframe box (84) is fixedly connected with described base plate (83) by the brace (87) of some L shapes.

6. an electromagnetic stove, this electromagnetic stove at least comprises housing (8), be arranged on movement in described housing (8) and control circuit board (86); described movement comprises wire coil bracket (1), be separately fixed at air ducting (2) and the pot circle (5) of described wire coil bracket (1) two sides, electromagnetic wire coil (4) among the wire casing being contained in described wire coil bracket (1), be fixedly connected with first radiator fan (3) of described air ducting (2), the heat insulation foam being fixed on the panel (6) on described pot circle (5) and being arranged between described panel (6) and described wire coil bracket (1), it is characterized in that, also comprise: the upper some fresh air inlets (831) of base plate (83) being arranged on the housing (8) of electromagnetic stove, be fixed on the mainframe box (84) on described base plate (83), the dividing plate (841) described mainframe box (84) being divided into the first cavity and the second cavity is provided with in described mainframe box (84), the control circuit board (86) of electromagnetic stove is fixed in described first cavity, the two opposite sides plate of described second cavity arranges cold wind mouth (8431) and hot-air mouth respectively, at upper installation second radiator fan (844) of described cold wind mouth (8431), and in described second cavity, be provided with the some fin (842) connecting described dividing plate (841) downside.

7. electromagnetic stove according to claim 6, is characterized in that, also comprise the air channel (85) be arranged between described hot-air mouth and described housing (8).

8. electromagnetic stove according to claim 6, it is characterized in that, described dividing plate (841) is L shape.

9. electromagnetic stove according to claim 6, it is characterized in that, described mainframe box (84) is fixedly connected with described base plate (83) by the brace (87) of some L shapes.

10., according to the electromagnetic stove of claim 6-9 described in any one, it is characterized in that, described electromagnetic wire coil (4) is woven into cancellated braiding copper cash for multiply enamel covered wire is stranded.