JP3246272B2 - Induction heating cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust filter for an induction cooking device.

[0002]

2. Description of the Related Art It has been noted that induction heating cookers have excellent characteristics such as high efficiency, safety and cleanability, and in recent years, their application to not only home use but also business use has become active. In particular, the market is demanding improvement in durability.

A conventional induction heating cooker will be described below with reference to FIG. On the upper part of the main body 3, there is provided a plate 1 on which a pot 9 to be heated is placed. The side surface of the main body 3 is a frame 2 having an exhaust hole 5 and fixes the plate 1. On the lower surface of the main body 3,
An intake port 4 composed of a small hole is provided. In the main body 3,
A cooling fan 6 is provided near the intake port 4, a heating coil 7 for generating a high-frequency magnetic field to generate an induction current in the pan 9 is provided below the plate 1, and a high-frequency current is applied to the heating coil 7 below the heating coil 7. A drive circuit 8 for supplying is provided.

The operation of the induction heating cooker configured as described above will be described below. When the pot 9 containing the food is placed on the plate 1 and a switch of an operation unit (not shown) is turned on, the induction heating cooker starts operating. That is, the drive circuit 8 operates to start supplying the high-frequency current to the heating coil 9. Receiving this high-frequency current,
The heating coil 7 generates a high-frequency magnetic field. When this high-frequency magnetic field links with the pan 9 placed on the upper part of the plate 1, the pan 9
Generates an induced current. Therefore, the pan 9 generates heat, and the cooking of the stored food proceeds. At this time,
The cooling fan 6 rotates to supply the outside air taken in from the intake port 4 to the heating coil 7 and the drive circuit 8 to cool it, and
From the exhaust. Therefore, the electric components of the induction heating cooker can be used regularly without increasing the temperature.

[0005]

However, the induction heating cooker of the above-mentioned conventional construction has a problem that dust and the like enter through the air inlet 4 to reduce durability. That is, the invading dust adheres to the drive circuit 8 and the like, which causes a decrease in durability. Of course, if the small hole constituting the intake port 4 is made small, it is possible to prevent the intrusion of dust. However, in this case, the dust is clogged in the intake port 4 and the intake port 4 itself has Another problem is that cleaning is necessary but this cleaning is difficult. In addition, when the intake port 4 is configured to be detachable, the cleaning performance is improved. However, when the operation is performed with the intake port 4 removed, the cooling fan 6 is easily provided.
Another problem of danger arises when a finger or the like touches the device.

SUMMARY OF THE INVENTION The present invention solves the problems of the conventional configuration, and provides an induction heating cooker that has high durability and high safety by suppressing dust accumulated in the main body. The primary purpose is to It is a second object of the present invention to provide an induction heating cooker with further improved cleaning properties. Still another object of the present invention is to provide an induction heating cooker with improved cleaning and handling properties.

[0007]

The first object of the present invention for achieving the first object is to provide a heating coil provided in a main body for generating an induction current in an object to be heated by generating a high-frequency magnetic field. A driving circuit for supplying a current to the heating coil, and a cooling fan for cooling the heating coil and the driving circuit. A dustproof filter having a plurality of small holes as a mouth is detachably provided outside the intake port, and the small hole of the dustproof filter is smaller than the small hole of the intake port.

[0008] A second means of the present invention for achieving the second object is to provide at least one L-shaped hook portion on the outer periphery of the intake port so as to face each other. A spring acting in the direction of the hook portion is provided, and an induction heating cooker for fixing a dustproof filter between the hook portions is provided.

A third means of the present invention for achieving the third object is, in particular, an induction heating cooker in which a dust filter is formed by folding around a sheet metal having a plurality of small holes. .

[0010]

According to the first means of the present invention, a dust filter which is detachably provided outside the intake port has a small hole smaller than the intake port, and acts to prevent intrusion of dust. Also, if the dust filter becomes clogged with dust, it can be removed and cleaned from the main unit as needed, and the size of the air intake port of the main unit is set so that a finger cannot enter. It is also a safe induction heating cooker with no fingers.

The second means of the present invention is that the dust-proof filter can be attached to the main body only by fitting the dust-proof filter between the hook portions, and can be easily removed from the hook portions, and is excellent in cleanability. And

Further, a third means of the present invention is that the dustproof filter is formed by folding around a sheet metal having a plurality of small holes, and can be washed with hot water or a detergent, and has excellent cleanability. The induction heating cooker has no risk of injury during cleaning.

[0013]

An embodiment of the present invention will be described below. FIG. 1 shows the overall configuration of this embodiment. On the upper part of the main body 12, a plate 1 on which a pot 26 to be heated is placed.
0 is provided. The side surface of the main body 12 is a frame 11 having an exhaust hole 23, and fixes the plate 10. On the lower surface of the main body 12, there is provided an air inlet 13 composed of a plurality of small holes set to a size such that a finger cannot enter. In this embodiment, the size of the small hole is set to about 12 mm. In the main body 12, a cooling fan 24 is provided in the vicinity of the intake port 13, and a heating coil 2 for generating a high-frequency magnetic field to generate an induction current in the pan 26 is provided below the plate 10.
5, a drive circuit 26 for supplying a high-frequency current to the heating coil 25 is provided below the heating coil 25.

In this embodiment, a dustproof filter 17 is detachably attached to the outside of the intake port 13 of the main body 12. The dustproof filter 17 has a plurality of small holes 18 having a smaller diameter than the intake port 13 on the surface.
It is detachably attached so as to be fitted into a pair of L-shaped hooks 14 and 15 provided around the intake port 13 of the second unit. As shown in FIG. 2, the hook portion 15 is provided with a plate-shaped spring 16 acting in the direction of the anti-hook portion 14. In other words, the dust filter 17 fitted between the hooks 14 and 15 is supported and fixed using the pressing force of the spring 16. Reference numerals 21 and 22 denote ribs provided in the vicinity of the hooks 14 and 15 for preventing the dust filter 17 supported between the hooks 14 and 15 from rattling.

The dustproof filter 17 has a structure as shown in FIG. In other words, for example, a stainless steel plate having a plurality of small holes 18 is used, and the folded portion 19 is formed by curling the periphery of the sheet metal. A slit 20 is provided at a corner of the folded portion 19 so that curling of the corner can be uniform.

In this embodiment, the air inlet 13 is provided on the bottom surface of the main body 12, but it can be provided on the side surface without any problem.

The operation of the embodiment will be described below. When a switch of an operation unit (not shown) is turned on, the drive circuit 2
6 starts operation, and a high-frequency current flows through the heating coil 25. The heating coil 25 generates a high-frequency magnetic field by the high-frequency current, and induction-heats the pan 26, which is the object to be heated, placed on the plate 10. The cooking of the food in the pot 26 proceeds by this induction heating. At this time, the cooling fan 24 is rotating, and the cooling air is taken in from the intake port 13 through the small holes 18 provided in the dustproof filter 17 and is sent to the drive circuit 26 / heating coil 25 for cooling and exhausting. Mouth 2
Exhaust from 3 In this way, the drive circuit 26, the heating coil 25, and the like are prevented from rising in temperature and can be used constantly.

The dust filter 17 is detachably attached to the main body 12 as shown in FIGS. That is, at the time of mounting, the dustproof filter 17 is inserted between the L-shaped hook portion 15 and the support rib 22, and is pushed in the direction of arrow a. The spring 16 is deformed by this pushing operation, and the dustproof filter 17 can be fitted between the hook portion 15 and the anti-hook portion 14. When the fitting is completed, the spring 16 has pressed the dustproof filter 17 in the direction of the anti-hook portion 14 and the support rib 22 holds the dustproof filter 17 so as not to rattle. 17 is stably mounted. At the time of removal, the spring 16 is deformed by pushing in the direction of arrow b as shown in FIG. 5, and the dustproof filter 17 can be easily removed from the hooks 14 and 15.

As described above, in the present embodiment, the cooling air is taken in from the intake port 13 through the dustproof filter 17 which is detachably attached. Since the small hole 18 of the dustproof filter 17 is set smaller than the diameter of the intake port 13, the intrusion of dust into the main body 12 is prevented. For this reason, the conventional problem that the dust adheres to the drive circuit 26 to reduce the durability can be solved. The dustproof filter 17 is detachably mounted between the L-shaped hooks 14 and 15 provided on the main body 12 by using the pressing force of a spring 16 provided on the hook 15. For this reason, the dust can be removed as needed and the dust adhered to the small holes 18 can be washed.

In this embodiment, the dustproof filter 17 has a folded portion 19 formed by curling a sheet metal having a plurality of small holes 18 as shown in FIG. The induction heating cooker has a simple configuration and can safely perform a cleaning operation without the possibility of cutting a finger or the like sometimes.

Further, even after the cleaning operation is completed, even if the dust-proof filter 17 is inadvertently installed and the apparatus is driven, the diameter of the air inlet 13 is set so that a finger cannot enter. It is a safe induction heating cooker without the possibility of touching.

[0022]

According to the first means of the present invention, a heating coil provided in a main body for generating an induction current in an object to be heated by generating a high-frequency magnetic field, a drive circuit for supplying a current to the heating coil, A cooling fan that cools a heating coil and a drive circuit; and a plurality of small holes for preventing finger insertion are provided on the main body wall surface to serve as a cooling air intake port, and a dustproof filter having a plurality of small holes is taken in. Induction heating cooking that is provided detachably on the outside of the mouth, and the dust hole of the dustproof filter is made smaller than that of the intake port to suppress dust accumulated in the main body, and has high durability and high safety. To realize the vessel.

The second means of the present invention is to provide at least one L-shaped hook portion on the outer periphery of the intake port facing each other, and to provide a spring acting in the direction opposite to the hook portion on one hook portion. As a configuration for fixing the dust-proof filter between the hook portions, an induction heating cooker with improved cleanability is realized.

According to a third aspect of the present invention, in particular, a dustproof filter is formed by folding around a sheet metal having a plurality of small holes, thereby realizing an induction heating cooker with improved cleanability and handleability. Is what you do.

[Brief description of the drawings]

FIG. 1 is a side sectional view of an induction cooking device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration in the vicinity of a hook portion.

FIG. 3 is a perspective view showing the dustproof filter.

FIG. 4 is a side sectional view showing a method of mounting the dustproof filter.

FIG. 5 is a side sectional view showing a method of removing the dustproof filter.

FIG. 6 is a side sectional view of a conventional induction heating cooker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 Main body 13 Intake port 14 Hook part 15 Hook part 16 Spring 17 Dustproof filter 18 Small hole 19 Folding part 24 Cooling fan 25 Heating coil 26 Drive circuit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H05B 6/12 F24C 15/34

Claims (3)

(57) [Claims] 1. A heating coil provided in a body for generating a high-frequency magnetic field to generate an induced current in an object to be heated, a driving circuit for supplying a current to the heating coil, and a cooling device for cooling the heating coil and the driving circuit. Having a fan, a plurality of small holes are provided on the main body wall surface so that a finger does not enter into the cooling air intake port, and a dustproof filter having a plurality of small holes is detachably provided outside the intake port, An induction heating cooker in which the small holes of the dustproof filter are smaller than the small holes of the intake port. 2. An at least one L-shaped hook portion is provided on the outer periphery of the intake port so as to face each other, and a spring acting in the direction opposite to the hook portion is provided on one hook portion, and a dustproof filter is provided between the hook portions. The induction heating cooker according to claim 1, wherein the heater is fixed. 3. The induction heating cooker according to claim 1, wherein the dustproof filter is formed by folding around a sheet metal having a plurality of small holes.