JPS5848481Y2 - steam oven - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a so-called steam oven that has a cooking function using steam, and its purpose is to improve the insulation of the heater mounting portion.

In conventional steam ovens, it has been proposed to insert the heater base into a retaining ring, fix it by spot welding, etc., and attach this heater base to the cooking cabinet wall via an insulating material, etc., but due to the welding conditions. It is difficult to set up, and scratches and holes may occur on the outer surface of the heater, resulting in a reduction in insulation performance.

In addition, the storage wall and the heater could be short-circuited, posing the risk of electric shock.

The present invention solves the above-mentioned drawbacks of the conventional heater by adding an ingenuity to the mounting structure of the heater, and an embodiment thereof will be described below with reference to the accompanying drawings.

In the figure, heaters 3 are provided above and below inside a cooking cabinet 2 whose front opening is opened and closed by a door 1, and a steam outlet 4 is formed in a part of one side wall.

5 is an exterior body, and 6 is a drain guide body that guides drain flowing down from between the open end of the cooking chamber 2 and the door 1 to the container 7.

Figures 2 and 3 show the mounting part of the heater 3; 8 is an insulating material such as an insulator through which the base of the heater 3 passes;
One end thereof faces the attachment opening 9 of the storage wall 2', and the stepped surface in the middle of the opening contacts the inner edge of the attachment opening 9 via the heat-resistant packing 10.

11 is an insulating contact member that comes into contact with the outer surface of the storage wall 2';
2 is an insulating material 8 and a backing member 11 that sandwich the storage wall 2'.
Bushnut that brings the and maintains that state, 1
3 and 14 represent the tensile force of the bush nut 12 with the insulating material 8.
These are a pair of mounting plates located above and below the base of the heater 3, and screws 15 are inserted so that the base is sandwiched between them.
It is tightened with.

Further, on one of the mounting plates 13, bent pieces 16 bent at an angle of 90° or less are formed on both sides corresponding to the base of the heater.

Now, reference numeral 17 denotes a protruding portion that protrudes from the insulating material 8, and is located at a certain level above the heater 3.

18 is an adhesive for sealing between the insulating material 8 and the heater base, and 19 is a drain port formed in the backing member 11.

In the above configuration, during regular oven cooking, the upper and lower heaters 3 are energized to raise the atmospheric temperature in the cooking chamber 2, and cooking can be performed using heat.

Moreover, if steam is ejected from the steam outlet 4 at the same time, various types of steam cooking can be performed.

By the way, during the above-mentioned steam cooking, water droplets adhering to the chamber wall 2' flow down one after another.

A part of it also reaches onto the insulating material 8.

However, since the insulating material 8 is formed with a protrusion 17, water droplets will drip onto the heater 3 etc. from this tip, but compared to the conventional case, the protrusion 17 causes the water droplets to fall on the storage wall 2.
The electrical insulation between the heater 3 and the storage wall 2' is maintained well by increasing the short-circuit distance between the heater 3' and the heater 3, and by making it difficult for water droplets to communicate between the protrusion 17 and the heater 3. This also prevents electric shocks.

Furthermore, the adhesive 18 can prevent water droplets from passing through the penetration part of the heater base through the insulating material 8 and causing a short circuit between the outer surface of the storage wall 2' and the heater base. Even if the water flows to the contact member 11 side through the drain port 19, this water is quickly discharged from the drain port 19, and short circuits due to water stagnation can be prevented.

Next, the mounting plates 13 and 14 not only have the function of preventing the insulating material 8 from moving in the axial direction with respect to the heater 3, but also have the function of preventing the base end of the heater from shifting.

Since the upper mounting plate 13 is formed with a pure square bent piece 16, the heater 3 can be held between the edges of the bent piece 16, so that the load is concentrated and reliable fixation is possible.

Moreover, even if thermal expansion occurs, this serves as a buffer material, ensuring the fixation of the heater 3, and preventing loosening during use.

Furthermore, there is no damage to the heater during assembly, and a decrease in insulation performance can be prevented.

As described above, according to the present invention, there is no electrical short circuit between the heater and the storage wall due to water droplets, there is no insulation deterioration due to damage during assembly of the broken heater, and there is no risk of electric shock. It can provide openness.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a steam oven showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of a heater mounting portion, and FIG. 3 is a horizontal sectional view of the same. 2...Cooking cabinet, 2'...Cardboard wall, 3...Storage, 8.
...Insulating material, 13, 14...Mounting plate, 16...Bending piece, 17...Protrusion part.

Claims (1)

[Scope of utility model registration request] At least one of the bases of the heater facing the inside of the cooking chamber should be
The insulation is sandwiched between mounting plates having bent pieces bent at an angle of 0° or less, and the rear part of the mounting plate is provided with a protruding portion upwardly inside the cooking chamber that covers the heater and a convex portion penetrating the inner wall of the cooking chamber at the rear. A steam oven in which a material is inserted into a through-hole in an inner wall of a cooking chamber through a gasket on the outer periphery of the convex portion of the insulating material, and is held from the outside of the inner wall by a support member having a plurality of convex portions and a bush nut.