JPH116627A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit the prevention of positional deviation of a side surface heater consisting of a sheath heater, as mush as possible. SOLUTION: A side surface heater 17 consisting of a sheath heater is arranged on a side part in a heating chamber 14, while a porcelain insulator for heater supporting two pieces of threads 18a, 18b of the side surface heater 17 is attached to the side surface of the heating chamber 14 through a screw 21. The porcelain insulator for heater 20 is constituted integrally of first and second spacer units 22, 23 arranged between the side surface of heating chamber and respective threads 18a, 18b, first and second receiving units 24, 25 positioned between both of the threads 18a, 18b, and a restraining unit 26 provided so as to be continued to the second receiving unit 25. The vertical movement and the transversal movement of the side surface heater 17 are retrained by the porcelain insulator 20 for the heater.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooker having a configuration in which a side heater composed of a sheathed heater is disposed at a side portion in a heating chamber.

[0002]

In a heating cooker, for example, a microwave oven having an oven function, side heaters composed of sheathed heaters are provided on both left and right sides of a heating chamber in order to improve unevenness in oven cooking. It is considered to provide one.

FIG. 7 and FIG. 8 show an example of a conventional configuration, which has the following configuration. The left and right side plate portions 2a (only one of which is shown in FIGS. 7 and 8) of the inner box 2 constituting the heating chamber 1 are formed with a concave portion 3 that is depressed outward. The side heater 4 is stored and arranged.

The side heater 4 has two strips 4a and 4b facing each other in a parallel state, and the base ends of the strips 4a and 4b are attached to the rear plate 2b of the inner box 2. In this state, each of the strips 4a, 4b extends forward. A heater insulator 5 made of an insulating material such as alumina porcelain is attached to the front of the lower one of the two strips 4a and 4b. By contacting the heater insulator 5 with the bottom of the recess 3 (side plate 2a of the inner box 2), the two strips 4a and 4b of the side heater 4 are separated from the side plate 2a of the inner box 2. ing.

However, in the above-described conventional configuration, the side heater 4 has a configuration in which the front portion is simply brought into contact with the side surface of the heating chamber 1 (side plate portion 2a of the inner box 2) via the heater insulator 5. Therefore, the mounting state is unstable. For this reason, for example, when cleaning the inside of the heating chamber 1, there is a possibility that the position of the side heater 4 is erroneously shifted or the strips 4a and 4b are deformed. In addition, during oven cooking, the position of the side heater 4 may be shifted due to the difference in the thermal expansion coefficient of each part. When microwave cooking is performed in a state where the position of the side heater 4 is shifted,
The state of reflection of the microwaves changes, which may adversely affect the quality of the cooking.

On the other hand, as for supporting the side heater 4, a configuration shown in FIG. 9 or FIG. 10 has been considered. In FIG. 9, a U-shaped heater insulator 6 having an open lower surface is attached to the side surface of the heating chamber 1 with screws 7, and the lower insulator 4 is attached to the heater insulator 6.
b. In FIG. 10, a heater insulator 8 whose side surface side (the side plate portion 2a side of the inner box 2) is opened is attached to a side surface of the heating chamber 1 with a screw 7, and the heater insulator 8 is used to form a lower streak. 4b.

However, in either of these cases shown in FIG. 9 and FIG.
Since b is only supported by the heater insulator 6 or 8, the mounting state is also unstable. In particular, in the case of FIG. 9, the lower ridge 4 b is easily moved in the direction shown by the arrow A, and in the case of FIG. 10, the lower ridge 4 b is easily moved in the direction shown by the arrow B.

The side portion 4a or 4b of the side heater 4
If the insulation of the side heater 4 is deteriorated in a state where the side wall portion 2a of the metal inner box 2 is in contact with the side plate portion 2a, there is a risk of electric shock through the inner box 2 and such a state. When the range cooking is performed, sparks may be generated between the side plate 2a of the inner box 2 and the strips 4a or 4b.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a side heater including a sheathed heater at a side portion in a heating chamber.
An object of the present invention is to provide a heating cooker capable of supporting a side heater in a stable state.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a side heater comprising a sheathed heater which is disposed on a side portion of a heating chamber and has two opposed strips. A heater insulator mounted on a side surface of the heating chamber so as to support the side heater, wherein the heater insulator is disposed between the side surface of the heating chamber and each strip of the side heater. First and second spacer portions, and first and second receiving portions disposed between the two strip portions and for restricting movement of one of the strip portions to the other side; A structure which is provided so as to be continuous with one of the second receiving portions, and which integrally has a regulating portion which regulates a corresponding one of the two struts from moving inward of the heating chamber. It is characterized by having.

According to the above-mentioned means, the lateral movement of each strip of the side heater is regulated by the first and second spacer portions and the regulation portion of the heater insulator. The movements in the directions facing each other are regulated by the first and second receiving portions, so that the side heater can be supported in a stable state. In addition, since the first and second spacer portions are interposed between the side surface of the heating chamber and the two strip portions, it is possible to prevent each strip portion from directly contacting the side surface of the heating chamber. .

[0012] In this case, it is preferable to provide the restricting portions on both the first and second receiving portions (the invention of claim 2).

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, FIG. 2 shows a microwave oven 11 having an oven function as a heating cooker.
Is shown. Inside the outer box 12 of the microwave oven 11, an inner box 13 having an open front is provided, and the inside of the inner box 13 is a heating chamber 14. Heating room 14
Is opened and closed by a door 15. An operation panel 16 is provided at a front portion on the right side of the outer box 12, and a machine room (not shown) is formed at a rear portion of the operation panel 16, and microwaves are heated in the machine room during microwave cooking. A magnetron for supplying the inside of the chamber 14 is provided.

On the left and right sides of the heating chamber 14, side heaters 17 each composed of a sheathed heater are disposed (only one of them is shown in FIGS. 1 and 2).
The side heaters 17 face each other in a parallel state.
U-shaped with the strips 18a, 18b of the book,
The base ends of the strips 18 a and 18 b are attached to the rear plate 13 a of the inner box 13 which is the rear surface of the heating chamber 14, and
a, 18b extend forward along the side plate 13b of the inner box 13.

A heater insulator 20 made of an insulating material such as alumina porcelain is attached to the front of the left and right side plate portions 13b of the inner box 13 forming the side surface of the heating chamber 14 by screws 21. The front portions of the strips 18a and 18b of the side heater 17 are supported by the insulator 20.

As shown in detail in FIG. 1, the heater insulator 20 is applied to a side plate portion 13b of the inner box 13 and is disposed between the side plate portion 13b and each of the strips 18a, 18b. A first receiving portion 24 which is located between the first and second spacer portions 22 and 23 and the two both linear portions 18a and 18b and protrudes laterally to receive the upper linear portion 18a from below; A second receiving portion 25 protruding laterally so as to receive the lower strip portion 18b from above, and the first and second receiving portions 2;
The configuration is such that a downwardly protruding restricting portion 26 provided in connection with the second receiving portion 25 of the fourth and fourth receiving portions 25 is integrally provided.

In this case, the right side plate 13b of the inner box 13
In the upper front part of the air inlet 2 is a supply port 2 for supplying outside air into the heating chamber 14.
7 are formed. The heater insulator 20 on the right side is disposed in the vicinity of the air inlet 27, and the front ends of both the strips 18 a and 18 b of the right side heater 17 are connected to the air inlet 2.
7 are arranged.

The left and right side plate portions 13b of the inner box 13 are provided with shelf supports 29 which are located above and below the side heater 17 and support the flange portions 28a of the shelf plate 28 during oven cooking. . Although not shown, an upper heater made of, for example, a glass tube heater is provided on the ceiling of the inner box 13, and a lower heater made of, for example, a planar heater is provided on the lower surface of the bottom plate 13 c of the inner box 13. It is arranged.

In the above-described configuration, when performing oven cooking, for example, the left and right side heaters 17, the upper heater, and the lower heater are energized, respectively, and these heaters generate heat. The object to be cooked (not shown) placed thereon can be satisfactorily cooked.

In the above embodiment, the side heater 1
The movement of each of the strips 18a, 18b in the lateral direction is regulated by the first and second spacer sections 22, 23 of the heater insulator 20 and the regulation section 26, and each of the strips 18a, 18b.
b (movement in the direction in which the strips 18a, 18b are opposed to each other) by the first and second receiving portions 24, 2
5, the side heater 17
Can be supported in a stable state. Therefore, for example, when cleaning the inside of the heating chamber 14, even if carelessly touching the strips 18a, 18b of the side heater 17,
The position of the side heater 17 can be prevented from being shifted as much as possible, and the position of the side heater 17 can be prevented from being shifted as much as possible even if there is a difference in the coefficient of thermal expansion of each part during oven cooking.

Further, the side of the heating chamber 14 and the two strips 18
a, 18b between the first and second spacer portions 22,
Since the interposition 23 is provided, it is possible to reliably prevent each of the strips 18a and 18b from directly contacting the side surface of the heating chamber (the side plate 13b of the inner box 13). Therefore, even if the insulation state of the side heater 17 is deteriorated, the risk of electric shock via the inner box 13 can be prevented as much as possible. Part 18
Also, it is possible to prevent a spark from being generated between a and 18b.

In this case, the side plate 13b of the inner box 13
No recess is formed in each of the strips 1 of the side heater 17.
Since the distance between the outer case 12 and the outer case 8a, 18b can be made larger than in the conventional cases of FIGS.
It becomes possible to prevent the outer box 12 from being heated by the heat of the side heater 17 as much as possible.

Further, 2 in the right side heater 17
The front ends of the strips 18a and 18b face the intake port 27, and air (outside air) supplied from the intake port 27 into the heating chamber 14 hits the front ends of the strips 18a and 18b. This makes it possible to minimize the possibility that the door 15 becomes hot due to the heat of the strips 18a and 18b.

FIG. 3 shows a second embodiment of the present invention. The second embodiment differs from the first embodiment in the following points. That is, in the heater insulator 30, the upper first receiving portion 24 is also provided with the upward regulating portion 31.
Are provided integrally. In such a configuration,
The movement of the strips 18a and 18b of the side heater 17 can be more reliably prevented.

FIG. 4 shows a third embodiment of the present invention. The third embodiment differs from the first embodiment in the following points. That is, in the side heater 32,
The strip 1 located on the upper side of the two strips 18a and 18b
8a is configured such that the rear portion 33a is higher than the front portion 33b. As a result, the two strips 18a, 18
The interval L1 at the rear portion between b is larger than the interval L2 at the front portion (L1> L2).

In the third embodiment having the above-described configuration, when performing oven cooking, the user erroneously sets the shelf board 28.
Of the upper side of the side heater 32
a, the shelves 28 are inclined downward to the front as shown in FIG.
Can be easily determined to have been set incorrectly.

Further, since the interval L1 at the rear portion between the two strips 18a and 18b is configured to be larger than the interval L2 at the front portion, when the side heater 32 is mounted in the heating chamber 14, There is also an advantage that the two strips 18a and 18b can be easily attached to the heater insulator 20.

FIGS. 5 and 6 show a fourth embodiment of the present invention. The fourth embodiment differs from the third embodiment in the following points. That is, in the side heater 34, the upper portion 18a of the two portions 18a and 18b is configured so that the rear portion 33a is higher than the front portion 33b, and the lower portion is located at the lower portion. 18b
Is configured such that the rear portion 33a is lower than the front portion 33b, and the side heater 34 is configured to be vertically symmetrical about a horizontal line 35.

In the fourth embodiment having such a configuration, since the side heater 34 is formed in a vertically symmetrical shape, a part common to the right side and the left side is used as the side heater 34. Is possible, and the assemblability is excellent, so that the cost can be reduced.

The distance L3 at the rear portion between the two strips 18a and 18b is determined by the distance L of the third embodiment.
Since it is configured to be even larger than 1, the two strips 18a and 18b can be more easily attached to the heater insulator 20 when the side heater 34 is installed in the heating chamber 14. Become like

The present invention is not limited to each of the above-described embodiments, but may be applied to, for example, those having no microwave cooking function without departing from the gist of the present invention. can do.

[0032]

According to the present invention, the following effects can be obtained. According to the cooking device of the first aspect, the side heater including the sheathed heater is provided on the side of the heating chamber, and the side heater can be supported in a stable state, and the position of the side heater is shifted. In addition, it is possible to prevent as much as possible, and to prevent each strip of the side heater from directly contacting the side surface of the heating chamber.

According to the heating cooker of the second aspect, it is possible to more reliably prevent the position of the side heater from being shifted. According to the heating cooker of the third aspect, when the user mistakenly sets the shelf on the upper strip of the side heater, the user tilts the shelf by mistake, and the user mistakes the shelf. There is an advantage that the setting can be easily determined.

According to the fourth aspect of the present invention, it is possible to use parts common to the right side and the left side as the side heater, as well as to achieve excellent assemblability and to reduce the cost. It becomes possible.

According to the fifth aspect of the present invention, the air supplied from the air inlet into the heating chamber hits the front end portion of the strip in the side heater, so that the heat of the strip heats the door. Can be suppressed as much as possible.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of a main part showing a first embodiment of the present invention.

FIG. 2 is an external perspective view showing a partly broken portion.

FIG. 3 is a view corresponding to FIG. 1, showing a second embodiment of the present invention.

FIG. 4 is a longitudinal sectional side view of a main part showing a third embodiment of the present invention.

FIG. 5 is a longitudinal sectional side view of a main part showing a fourth embodiment of the present invention.

FIG. 6 is a cross-sectional plan view of a main part.

FIG. 7 is a diagram corresponding to FIG. 2 showing a conventional configuration.

FIG. 8 is a diagram corresponding to FIG. 1;

FIG. 9 is a diagram corresponding to FIG. 1, showing a different conventional configuration.

FIG. 10 is a diagram corresponding to FIG. 1 showing a further different conventional configuration.

[Explanation of symbols]

11 is a microwave oven (cooker) with an oven function, 1
2 is an outer box, 13 is an inner box, 14 is a heating room, 15 is a door, 17
Is a side heater, 18a and 18b are strips, 20 is a heater insulator, 22 is a first spacer, 23 is a second spacer, 24 is a first receiver, 25 is a second receiver, 26 Is a regulating portion, 27 is an intake port, 28 is a shelf plate, 30 is a heater insulator, 31 is a regulating portion, 32 is a side heater, 33a is a front portion,
33b is a rear part, 34 is a side heater.

Claims (5)

[Claims] 1. A side heater, which is provided on a side portion of a heating chamber and has a sheath heater having two strips facing each other, mounted on a side surface of the heating chamber so as to support the side heater. A heater insulator provided, wherein the heater insulator comprises: first and second spacer portions disposed between a side surface of the heating chamber and each strip portion of the side heater; A first and a second receiving portion disposed between the first and second portions, the first and second receiving portions for restricting the movement of one of the strips toward the other side; and the first and second receiving portions are provided so as to be continuous with each other. A heating cooker having a structure in which a restricting portion for restricting movement of a corresponding one of the two lines to the inside of the heating chamber is integrally provided. 2. The cooking device according to claim 1, wherein a regulating portion is provided on both the first and second receiving portions. 3. The two strips of the side heater extend forward with the base end thereof attached to the rear surface of the heating chamber, and the strip located on the upper side of the two strips. The department is
The cooking device according to claim 1, wherein the rear portion is configured to be higher than the front portion. 4. The cooking device according to claim 3, wherein the side heater has a vertically symmetric shape. 5. The heater insulator is arranged near an air inlet formed on a side surface of the heating chamber, and the front ends of two strips of the side heater are arranged so as to face the air inlet. The heating cooker according to claim 1, wherein