KR20010039530A - Cooking heater device - Google Patents

Abstract

PURPOSE: To provide a cooking heater apparatus capable of performing high accuracy temperature control of a cooker over a long period of time and reduction of the manufacturing cost. CONSTITUTION: A U-shaped partition wall 6 is employed as means for protecting a temperature sensor 5 from heat surrounding the sensor 5, and the temperature sensor 5 is disposed inside the U-shape of the partition wall 6. The partition wall 6 is disposed in a heat insulation outer casing structure 1 such that both U-shaped ends of the partition wall 6 make contact with an inner surface of an outer peripheral wall 101 of the heat insulation outer casing structure 1. Hereby, the temperature sensor 5 and a heater section 4 are insulated from heat by the U-shaped partition wall 6. Further, radiation heat from a glass plate 2 entering from the neighborhood of the side of a U-shaped opening 6b of the partition wall 6 is reduced, and temperature rise of the entire in the partition wall 6 due to radiation heat of the glass plate 2 is reduced.

Description

Cooking heater device

The present invention relates to a cooking heater device that can be assembled as part of a system kitchen or transportable as a mobile heater.

In recent years, in high-rise buildings, such as high-rise apartments, the installation of the cooking heater apparatus which warms a cooker by electric power instead of gas for the purpose of fire prevention etc. resigns. There are various types of cooking heater apparatuses. For example, a cooking heater apparatus having a built-in temperature sensor measures the temperature at the side of the cooker by using the temperature sensor, and adjusts the amount of heat generated in the heater unit in the apparatus according to the measured value. By doing so, control is performed to bring the temperature of the cooker closer to the set value.

However, according to the conventional cooking heater apparatus as described above, both the heater portion and the temperature sensor are built in the inner side of the heat insulating outer case. For this reason, inside of a heat insulation exterior case, it cannot be avoided that the heat of a heater part surrounds a temperature sensor, and since the temperature sensor becomes high temperature by the heat around the sensor, the measurement accuracy of a temperature sensor deteriorates and cooking with high precision is performed. It is difficult to perform temperature control of the mechanism. In this case, in particular, it is also possible to use a high heat resistance temperature sensor, but since such a high heat resistance temperature sensor is expensive, there is a problem in that the manufacturing cost of the entire cooking heater apparatus is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a cooking heater apparatus capable of performing a high temperature control of a cooker for a long time with high accuracy and also reducing a manufacturing cost.

1 is a plan view showing an embodiment of a cooking heater apparatus according to the present invention.

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a wiring diagram of the cooking heater shown in FIG. 1.

<Short description of code>

1 ... thermal insulation case

1a ... Top opening of insulation enclosure

2 ... glass plate

3.cooking

4.Heater part

5 ... temperature sensor

5a ... heat floor

6 ... U-shaped bulkhead

6a ... U both ends of U-shaped bulkhead

6b ... U opening of U-shaped bulkhead

7.The bottom plate opening of the thermal insulation case

8 ... sensor support

9 ... Spring

10 ... Control Box

11.Connector

12 ... CPU

Bottom plate of insulation enclosure

101.Outer wall of insulation enclosure

400 ... heater cable

500 ... sensor cable

In order to achieve the above object, the present invention provides a heat insulating outer case formed by opening the upper portion, a heater unit provided inside the heat insulating outer case, a glass plate disposed in the upper opening of the heat insulating outer case, and the heat insulating outer case. In the cooking heater device which is located inside and comprises a temperature sensor for measuring the temperature of the cooker on the glass plate through the glass plate, U-shaped partition wall is used as a means for protecting the temperature sensor from heat around the sensor, By installing the temperature sensor inside the U-shaped partition of the U-shaped partition wall, the U-shaped partition wall is installed in the heat-insulating outer case so that both ends of the U-shaped partition of the U-shaped partition contact the inner surface of the outer circumferential wall of the heat insulation outer case. It is characterized by that.

The present invention is characterized in that the outer peripheral wall side and the U-shaped partition wall of the heat-insulating outer case are formed by integrally forming the workpiece.

In the present invention, the U-shaped partition wall is insulated and shielded between the temperature sensor and the heater, and the temperature sensor is not directly heated by the heater. On the other hand, most of the glass plates receive the radiant heat directly from the heaters and become considerably high compared to the temperature of the bottom of the cooker. However, in the case of the present invention, a part of the glass plate, that is, the glass plate portion located on the U-shaped opening side of the U-shaped partition wall has no heat influence from the heater portion and becomes a temperature closer to the temperature of the bottom of the cooker than other glass plate portions. As a result, radiant heat from the glass plate to the temperature sensor side can be suppressed to the minimum necessary, and abnormal temperature rise of the temperature sensor can be suppressed. This is because the U-shaped opening of the U-shaped partition wall has only the outer circumferential wall of the heat-insulating exterior case and there is no heater part as a heat source.

Hereinafter, an embodiment of a cooking heater according to the present invention will be described in detail with reference to FIGS. 1 to 3.

The cooking heater shown in FIG. 1 has an outer case 1 (hereinafter referred to as an “insulation outer case”) made of a heat insulating material, and the heat insulating outer case 1 has its upper portion as shown in FIG. 2. It is formed of a box-shaped bottom plate formed by an opening, and a cylindrical plate-shaped bottom plate 100 and a cylindrical frame-shaped outer circumferential wall 101 provided at an outer circumferential edge of the bottom plate 100.

The heat resistant glass plate 2 (also called a cooktop glass) is detachably attached to the upper opening 1a of the heat insulation exterior case 1, and the cooker 3 is mounted on this glass plate 2 at the time of cooking. Is placed.

The heater part 4 is provided inside the heat insulation outer case 1, and the heater part 4 consists of a thin long plate-shaped nichrome wire etc., and also the inner bottom face of the heat insulation outer case, ie, the bottom plate 100 surface. Spread almost entirely.

Inside the heat insulation exterior case 1, in addition to the heater part 4 mentioned above, the temperature sensor 5 which consists of a thermistor etc., and the U-shaped partition 6 which consists of a heat shield is provided, and the temperature sensor 5 ) Is disposed at a position slightly away from the outer circumferential wall 101 of the thermal insulation exterior case 1. Further, the U-shaped partition wall 6 is provided as a means for protecting the temperature sensor 5 from heat around the sensor, and the U-shaped both ends 6a and 6a are the outer circumferential wall 101 of the heat-insulating outer casing 1. ) It is installed to be in contact with the inner surface. And the temperature sensor 5 is provided in the U inside of the U-shaped partition 6 provided in this way.

The U-shaped partition wall 6 as described above has a structure in which the U-shaped both ends 6a and 6a come into contact with the inner surface of the outer circumferential wall 101 of the heat-insulating outer case 1, and are integral with the outer circumferential wall 101. Since it has continuity, the U-shaped partition wall 6 can be molded integrally with the outer circumferential wall 101. In this case, the step of separately molding the U-shaped partition wall 6 can be omitted. In addition, although the U-shaped partition wall 6 may be formed as a separate part from the outer peripheral wall 101, it is preferable to shape-mold integrally with the outer peripheral wall 101 from a viewpoint of reducing the manufacturing cost of an apparatus. In addition, the bottom plate 100 and the outer circumferential wall 101 of the heat-insulating exterior case 1 may be formed of different components, respectively, but may be formed of the same material, or may be integrally formed of the same material. (6) is also made of the same material as that of the bottom plate 100 and the outer circumferential wall 101 of the heat-insulating exterior case 1, and can be molded integrally with them.

In addition, at the installation portion of the temperature sensor 5, the bottom plate 100 of the heat insulating outer case 1 is partially opened, and the sensor support 8 is inserted and mounted in the bottom plate opening 7, and the sensor support 8 ), The temperature sensor 5 is mounted so as to be movable. Moreover, this temperature sensor 5 is installed so that it may always be biased toward the back surface of the glass plate 2 by the spring 9, and the heat-sensitive surface 5a press-contacts the back surface of the glass plate 2 by the spring force. It is set to

As shown in FIG. 3, the control box 10 is provided in the outer side of the heat insulation exterior case 1, and the sensor cable 500 and the heater cable 400 are connected to this control box 10. As shown in FIG. The sensor cable 500 is connected to the temperature sensor 5 through the bottom plate opening 7 of the heat insulating outer case 1, and the heater cable 400 is mounted on the outer circumferential wall 101 of the heat insulating outer case 1. It is directly connected to the heater part 4 via the connected connectors 11 and 11. In addition, a triac 13 is connected to the middle of the heater cable 400.

The control box 10 incorporates the CPU 12 and adjusts the amount of heat generated by the heater unit 4 in accordance with the temperature measured by the temperature sensor 5 to adjust the temperature of the cooker 3 to a set value. Close control is performed. By the way, the temperature actually measured by the temperature sensor 5 is not the temperature of the cooker 3 itself, but the temperature of the cooker 3 through the glass plate 2, strictly speaking, the glass plate located directly under the cooker 3. It is the temperature of (2) itself. For this reason, in the control box 10, the temperature of the cooker 3 is first calculated | required based on the temperature of the glass plate 2 detected by the temperature sensor 5, and the above described according to the temperature of this cooker 3 calculated | required. The heater unit 4 is controlled as described above. In addition, this control is executed by the CPU 12.

Next, the operation of the cooking heater device configured as described above will be described with reference to FIG. 1.

When the cooking heater apparatus is operated, the heater unit 4 generates heat, and the heat is transmitted to the cooker 3 on the glass plate 2 through the glass plate 2, thereby heating the cooker 3.

At this time, when the temperature sensor 5 measures the current temperature of the cooker 3 through the glass plate 2, the control box 10 adjusts the amount of heat generated by the heater unit 4 according to the measured temperature. The temperature of 3) is controlled to be almost equal to the set value.

By the way, while operation | movement of this apparatus as mentioned above, the glass plate 2 will become high temperature and heating of the temperature sensor 5 by the radiant heat from this glass plate 2 is unavoidable, but the heating amount is small, The temperature of the temperature sensor 5 does not rise very much. This is due to the following reasons.

That is, first, between the temperature sensor 5 of this cooking heater apparatus and the heater part 4 is thermally shielded by the U-shaped partition 6, and the temperature sensor 5 is directly heated by the heater part 4 As a result, abnormal temperature rise of the temperature sensor is suppressed. Secondly, in the case of the present cooking heater, the temperature sensor 5 is arranged inside the U-shaped partition 6, but the U-shaped partition 6 has its U-shaped ends 6a and 6a insulated from each other. Since it is mounted so as to be in contact with the inner surface of the outer circumferential wall 101), the heater part 4 that is a heat source is the only outer circumferential wall 101 of the heat-insulating outer casing case 1 on the U-shaped opening 6b side of the U-shaped partition wall 6. ) For this reason, most of the glass plate 2 receives the radiant heat from the heater part 4 directly and becomes considerably high temperature compared with the temperature of the bottom surface of the cooker 3, but a part of the glass plate 2, namely, the U-shaped partition wall ( The part of the glass plate 2 located in the U-shaped opening 6b side of 6) has no heat influence from the heater part 4, and is close to the temperature of the bottom surface of the cooker 3 compared with the other glass plate 4 part. As a result, the radiant heat from the glass plate 2 to the temperature sensor 5 side is suppressed to the minimum necessary, and the temperature rise of the whole inside of the U-shaped partition 6 also becomes small. This also suppresses abnormal temperature rise of the temperature sensor.

As described above, in the cooking heater device of the present embodiment, the temperature sensor 5 is provided inside the U-shape of the U-shaped partition 6, and both U-shaped ends 6a of the U-shaped partition 6 are formed. , 6a) is installed in the heat insulating outer case 1 such that the U-shaped partition 6 is in contact with the inner circumferential wall inner surface of the heat insulating outer case 1. For this reason, between the temperature sensor 5 and the heater part 4 is heat-shielded and shielded by the U-shaped partition 6, and the glass plate 2 in the vicinity of the U-shaped opening 6b side of the U-shaped partition 6 Part) has no heat influence from the heater part 4, the temperature is close to the temperature of the bottom of the cooker 3, and the radiant heat from the glass plate 2 to the temperature sensor 5 side is suppressed to the minimum necessary. Therefore, abnormal temperature rise of the temperature sensor 5 can be suppressed, and temperature control of a high-precision cookware can be performed for a long time. In addition, in this case, since the temperature rise of the temperature sensor 5 is small, it is not necessary to use an expensive temperature sensor having particularly high heat resistance, and the manufacturing cost of the entire apparatus can be reduced.

In addition, according to the cooking heater apparatus of the present embodiment, the U-shaped both ends 6a and 6a of the U-shaped partition wall 6 are in contact with the inner surface of the outer circumferential wall 101 of the heat-insulating outer case 1, and thus the heat-insulating outer body Since the outer circumferential wall 101 and the U-shaped partition wall 6 of the case 1 have an integral continuity, the outer circumferential wall 101 and the U-shaped partition wall 6 can be molded integrally, and the U-shaped partition wall ( The manufacturing cost of the entire apparatus can be reduced in that the step of separately molding 6) can be omitted.

In addition, in the said embodiment, although the elongate plate-shaped nichrome wire was employ | adopted as the heater part 4, this invention can be applied also to what provided other heater parts other than a nichrome wire. In addition, although the thermistor was employ | adopted as the temperature sensor 5 in the said embodiment, this invention is applicable also to what is equipped with other temperature sensors other than a thermistor.

In the cooking heater apparatus according to the present invention, as described above, a temperature sensor is provided inside the U-shaped partition wall, and both U-shaped ends of the U-shaped partition wall are in contact with the inner surface of the outer circumferential wall of the heat insulating outer case. The U-shaped partition wall is installed in a heat insulating outer case. For this reason, between the temperature sensor and a heater part is thermally shielded by the U-shaped partition wall, and the glass plate part of the whole glass plate especially in the vicinity of the U-shaped opening side of a U-shaped partition wall does not have a heat influence from a heater part, The temperature of the cookware with high accuracy over a long period of time can be suppressed because it becomes a temperature close to the temperature of the bottom surface and can suppress the radiant heat of the glass plate toward the sensor part to the minimum necessary. It is not necessary to use an expensive temperature sensor which can perform control and especially high heat resistance, and the manufacturing cost of the whole apparatus can be reduced.

In addition, according to the cooking heater apparatus according to the present invention, the U-shaped both ends of the U-shaped partition wall is in contact with the inner surface of the outer circumferential wall of the heat insulating outer case, and since the outer circumferential wall and the U-shaped bulkhead of the heat insulating outer case have integral continuity, Since the outer peripheral wall and the U-shaped partition wall can be molded integrally, and the step of separately molding the U-shaped partition wall can be omitted, the manufacturing cost of the entire apparatus can be reduced.

Claims (2)

A heat insulating outer case formed by opening an upper portion, a heater unit provided inside the heat insulating outer case, a glass plate disposed in an upper opening of the heat insulating outer case, and positioned inside the heat insulating outer case and the glass plate through the glass plate. In the cooking heater device comprising a temperature sensor for measuring the temperature of the cooker of the bed, A U-shaped partition is used as a means for protecting the temperature sensor from heat around the sensor, and the temperature sensor is provided inside the U-shaped partition of the U-shaped partition. Cooking heater device, characterized in that the U-shaped partition is installed in the heat insulating outer case so as to contact the inner surface of the outer peripheral wall of the heat insulating outer case. The cooking heater apparatus according to claim 1, wherein the outer circumferential wall side and the U-shaped partition wall of the heat-insulating outer case are integrally formed and processed.