JPS63118540A - Heat-cooking apparatus - Google Patents

Abstract

PURPOSE:To make it possible to control the quantity of radiation to greatly improve the cooking performance of the heat-cooking apparatus by installing a temperature detector in the vicinity of a face heater on the outer side of the upper wall of a heating chamber, and providing a windshield in the vicinity of the temperature detector. CONSTITUTION:Face heaters 2a and 2b are installed at the outside of the upper wall 6 of a heating chamber, and are pressed by a heater pressing plate 3a and are fastened by screws to the flange part 7 of the upper wall 6 of the heating chamber. A temperature detector 9 is hermetically connected to the upper wall 6 of the heating chamber at its flange part 14 by means of a metal mounting plate 11 having elasticity. The mounting plate 11 and the windshield 12 are secured to the outside flange part 7 of the upper wall 6 of the heating chamber by means of mounting screws 13. Thus, the temperature detector 9 can control the face heater 2a and 2b without being affected by the cooling air flow, and therefore the cooking performance of the apparatus is greatly improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cooking device, such as an electric oven or a microwave oven with a heater, that heats an object in a heating chamber using the heat of a heater.

2. Description of the Related Art A conventional heating cooker shown in FIG. 4, for example, includes a heating chamber 1 for storing and cooking food, and planar heaters 2a and 2b for raising the ambient temperature of the heating chamber 1.

2C, an ambient temperature sensor 4 protruding from the inside of the heating chamber 1, and a cover 5 with good ventilation to protect the ambient temperature sensor 4. It is configured to detect the ambient temperature and control the ON and FF states of the planar heater, which is the heat source.

Problems to be Solved by the Invention However, in such conventional heating cookers, the temperature inside the heating chamber is controlled by the ambient temperature sensor 4 exposed in the heating chamber 1, but the temperature within the heating chamber is controlled by the ambient temperature. Since the reaction is slow when controlled, the temperature set in advance by the user ends up being turned up at the start-up stage 9.

In addition, the way heat is transferred to food in a cooking device is mainly through radiation and convection, which are determined by the temperature of the heat source.
The amount of radiation required for cooking in a heating cooker differs, such as grilled fish, which requires a lot of radiation, and cake, which requires less radiation. Controlling the amount of radiation is essential for optimal cooking, as it greatly affects the quality of cooking, but the problem is that it is extremely difficult to control the amount of radiation using the conventional method of controlling using ambient temperature. There was a point.

The present invention solves these conventional problems, and has a simple configuration. By controlling the temperature of the planar heater that is the heat source, the amount of radiation can be controlled, and the cooking performance can be greatly improved. The purpose of the present invention is to provide an improved heating cooker.

Means for Solving the Problems In order to achieve the above object, the heating cooker of the present invention includes a heating chamber for heating an object to be heated, a planar heater disposed closely on the outside of the upper wall of the heating chamber, and a heating chamber for heating an object to be heated. The heating chamber is equipped with a temperature sensor that detects the temperature of the upper wall of the heating chamber, the temperature sensor is installed near the planar heater on the outside of the upper wall of the heating chamber, and a windshield is provided near the temperature sensor.

Function: In the cooking device of the present invention, a temperature sensor that detects the temperature of the wall surface of the heating chamber is installed near the planar heater that is the heat source, and the wind from the cooling fan directly detects the temperature near the temperature sensor. By installing a windshield on the device to prevent it from slowing down detection, the temperature of the sheet heater that is the heat source can be controlled, making it possible to control the amount of radiation determined by the temperature of the heat source. ,
This has the effect of enabling optimal cooking depending on the food to be cooked and the cooking method.

EXAMPLE Hereinafter, an example of the present invention will be described based on the drawings.

As shown in FIG. 1, planar heaters 2a and 2b are installed on the outside of the heating chamber upper wall 6, and are pressed down with a heater holding plate 3a. It has a structure in which it is screwed to the 7 flange part A for spotting, and a contact surface type temperature sensor 9 is installed near the peripheral planar heater 2a on the outside of the upper wall 6 of the heating chamber. It is installed so as to be surrounded by a windshield 12 to prevent the influence of wind. As shown in Figures 1 and 2, the temperature detector 9 is installed using an elastic metal mounting hole with holes for holding down the 7 flange portions 14 provided on the temperature detector 9. On board 11,
Utilizing the elasticity of metal, it is brought into close contact with the upper wall 6 of the heating chamber.

The plate 11 is attached with a windshield 12 for preventing the temperature sensor 9 from being affected by wind from a cooling fan, etc., and is attached with screws 13, and the screws 13 are attached to the heating chamber 1.
It is fixed to a 7 flange 7 for the spot provided on the outside of the heating chamber upper wall 6 so as not to protrude inward.

In this way, the temperature detector 9 can detect a temperature substantially close to the temperature of the peripheral planar heater 2a without being affected by the cooling air, so that the peripheral planar heater 2a can be controlled.

Here, the peripheral planar heater 2a and the central planar heater 2b
has a constant power distribution relationship, so it can be controlled in the same way. Since the amount of radiation is determined by the temperature of the heat source, it is possible to control the amount of radiation by controlling the sheet heaters 2a and 2b, which are the heat sources, and it is possible to finely adjust the temperature. , cooking performance can be greatly improved.

In addition, by providing the temperature sensor 9 with a flat surface, the temperature sensing element can be protected, and by adjusting the area in close contact with each other, it is possible to detect the temperature within a necessary range.
Easy maintenance such as replacement.

In addition, since the temperature sensor 9 does not protrude into the heating chamber 1, the inside of the heating chamber 1 can be used effectively and cleaning is easy, and since the temperature sensor 9 is not directly exposed to steam, it is less likely to malfunction or malfunction. . Furthermore, in a heating cooker equipped with a high-frequency heating function, there is no fear of radio wave leakage because no hole for a temperature sensor is formed in the heating chamber.

In addition, since the temperature sensor 9 can be mounted with a simple configuration of the mounting plate 11, which is a plate material, it is inexpensive and easy to work with.Furthermore, one end of the mounting plate 11 can be fixed to the 7 flange part 7 on the outside of the heating chamber with screws. In particular, since no protrusions such as screws are exposed inside the heating chamber 1, the structure is safe and easy to clean.

In addition, by installing the temperature detector 9 outside the peripheral planar heater 2a, the temperature of the temperature detector 9 itself can be kept relatively low, and the lead connecting the terminal of the temperature detector 9 to the control board Since the wire 9 does not need to pass over the planar heaters 2a and 2b, it is advantageous in terms of heat resistance such as the use of inexpensive lead wires, and an inexpensive heating cooker can be provided.

In addition, by installing the temperature sensor 9 on the 7-lung portion on the control board side, the length of the lead wire 10 can be shortened, which is advantageous in terms of cost and has good workability.

Next, another embodiment of the present invention will be described with reference to FIG.

In FIG. 3, the difference from the above embodiment is that the temperature sensor 9 is attached via the temperature sensor spring 15, which is the use of the 0 spring 16, which allows the temperature sensor 9 to be placed in closer contact with the temperature sensor 9. If the mounting position is near the planar heaters 2a, 2b near the center of the heating chamber upper wall 6, the heating chamber upper wall 6 may curve toward the planar heaters 2a, 2b due to thermal expansion as heating progresses. The springs 15 can be kept in close contact with each other at all times, and the spring 15 absorbs unnecessary force in the event of shocks such as drops or vibrations.
This results in a highly reliable installation.

Effects of the Invention As described above, the heating cooker of the present invention provides the following effects.

(1) By installing the temperature sensor close to the sheet heater without being affected by the wind from the cooling fan, the temperature of the sheet heater, which is the heat source, can be controlled with high precision, which is useful for cooking. It is possible to control the amount of radiation suitable for food, and fine-grained temperature control is possible.
Cooking performance can be significantly improved.

(2) Since the temperature sensor does not protrude into the heating chamber, the heating chamber can be used effectively and the heating chamber can be cleaned easily.
Since the temperature sensing element is not exposed to steam, it is less likely to malfunction or break down.There is no need to drill a mounting hole in the heating chamber, so it can be installed easily at a low price. , there is no need to worry about radio wave leakage.

(3) Since the temperature detector detects the temperature near the sheet heater, it is possible to prevent abnormal overheating of the sheet heater due to failure, etc., and safety is improved.

(4) By installing a windshield near the temperature sensor,
The temperature sensor body and lead wire terminals can be protected.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the main parts of a heating cooker that is an embodiment of the present invention, Fig. 2 is a cross-sectional view of the main parts showing the structure of the installation of the temperature sensor, and Fig. 3 is another embodiment. FIG. 4 is a front sectional view showing a conventional heating cooker. 1...Heating chamber, 2a...Peripheral planar heater, 2b...Central planar heater, 9...
・・Temperature sensor, 11... Mounting is on board, 12...
...Windshield, 16...Spring. Name of agent: Patent attorney Toshio Nakao and one other person δ−
Figure 2

Claims (3)

[Claims] (1) A heating chamber that stores and heats food in the main body, a planar heater provided closely on the outside of the upper wall of the heating chamber, a cooling device that cools the control board, power supply components, etc., and the heating chamber a temperature sensor that detects the temperature of the upper wall, the temperature sensor is installed near the planar heater on the outside of the upper wall of the heating chamber, and a windshield is provided near the temperature sensor. A heating cooker. (2) The cooking device according to claim 1, wherein the temperature sensor includes a flat portion, and the flat portion is in close contact with the upper wall of the heating chamber. (3) The heating cooker according to claim 1, wherein the temperature sensor is held down from the outside by a plate material via a spring, and one end of the plate material is fixed to a flange provided on the outside of the heating chamber. .