JPH0910103A - Heating cooking-utensil - Google Patents

Abstract

PURPOSE: To accurately detect the temperature of oil even when a small amount of oil is put in the oil cooking pan for cooking. CONSTITUTION: When a temperature probe 22 is inserted in a holder part 25 provided in the upper surface of the outer surface of a frying pan 24. The outer peripheral surface of the lower part of the temperature probe fixedly make plane contact with a recessed part 26a in a fixed part 26. Also, since the tip part of the temperature probe abuts against the upper surface of a heat insulating part in the fixed part, a predetermined distance is ensured between the tip part of the temperature probe and the upper part of a top plate. A strong relationship exists between the temperature of the frying pan 24 and oil temperature in the frying pan 24 and both temperatures are almost equal to each other, so that a microcomputer can accurately detect the oil temperature on the basis of the detecting temperature of the temperature probe 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooker provided with a radiant heater for heating an oil cooking pot via a heat resistant plate.

[0002]

2. Description of the Related Art As this type of cooking device, a cooking heater having a halogen lamp heater is known. This cooking heater is configured such that the upper side of the halogen lamp heater is covered with a heat-resistant plate having a light-transmitting property such as heat-resistant glass, and a cooking container placed on the heat-resistant plate is heated through the heat-resistant plate. There is. Further, the cooking heater is equipped with a temperature probe that detects the temperature of the oil in the frying pan when cooking the oil. As shown in FIG. 6, the temperature probe 1 is inserted into the holding portion 2a of the frying pan 2 for frying. The temperature of the oil in the pan 2 is detected. Then, based on the detected temperature, the heating output of the halogen lamp heater is automatically controlled so that the temperature of the oil in the frying pan 2 reaches the set control temperature.

[0003]

In the above-mentioned conventional structure, as shown in FIG. 7, when cooking a small amount of oil in the frying pan 2, the tip of the temperature probe 1 should not go into the oil. There is. In such a case, since the temperature probe 1 detects a temperature lower than the actual oil temperature, the oil temperature rises above the set temperature, resulting in poor cooking performance and rapid oil deterioration. There was a problem that

[0004] In order to solve such problems,
A method of detecting the temperature of the outer bottom of the pan with a temperature sensor can be considered. However, the cooking heater described above cannot directly detect the temperature of the outer bottom portion of the pot because the pot is closely placed on the heat-resistant plate and is heated. Further, a configuration in which a temperature sensor is attached to the lower surface of the heat resistant plate to indirectly detect the temperature of the outer bottom portion of the pan is also conceivable. However, since the heat-resistant plate is heated by the heater to a considerably high temperature, it has been impossible to accurately detect the temperature of the outer bottom portion of the pan by the temperature sensor.

The present invention has been made in view of the above circumstances, and an object thereof is a heating cooker capable of accurately detecting the temperature of oil even when a small amount of oil is put in an oil cooking pot for cooking. To provide.

[0006]

The cooking device according to the present invention comprises:
A structure for heating an oil cooking pot placed on a heat-resistant plate by a radiant heater via the heat-resistant plate, which is detachably provided in the pan and is provided with A rod-shaped temperature detecting means for detecting a temperature, a heating control means for controlling the radiant heater based on a detection signal from the temperature detecting means, and an outer surface of the pot provided with the temperature detecting means of the pot. It is characterized in that it is provided with a fixing portion which is brought into contact with the outer surface and is fixed so as to secure a predetermined distance between the tip portion of the temperature detecting means and the upper surface of the heat resistant plate (claim 1).

In this case, it is preferable that the fixing portion has a concave portion that comes into surface contact with the temperature detecting means (claim 2).
Further, it is preferable that the fixing portion is provided on a straight portion of a side surface of the pot (claim 3). Further, it is preferable that the fixing portion is provided below the oil position line provided on the inner surface of the pot (claim 4). Further, it is preferable that the fixing portion has a heat shield portion that shields heat from the radiant heater or the heat resistant plate (claim 5).

[0008]

According to the above means, when the radiant heater is energized by the start of heating, the oil cooking pot placed on the heat-resistant plate is heated via the heat-resistant plate, and the temperature of the oil in the pan is reduced. To rise. Since the temperature detecting means fixed to the fixing portion provided on the outer surface of the pan is in contact with the outer surface of the pan and has a predetermined distance from the heat resistant plate, most of the heat from the heat resistant plate is received. Without detecting the temperature of the pot. Here, since the pot temperature and the oil temperature are substantially equal to each other, the temperature detecting means can accurately detect the oil temperature even if the amount of oil is small. Further, since the temperature detecting means is attached to the outside of the pan, it is possible to stably detect the temperature of the oil without hitting the cooking object with the temperature detecting means or accidentally touching it with chopsticks. (Claim 1).

In the case of this construction, if the fixed portion has a concave portion which comes into surface contact with the temperature detecting means, heat from the pot is easily transferred to the temperature detecting means, so that the temperature of the pot and thus the temperature of the oil can be detected more accurately. It is possible (claim 2). Further, if the fixing portion is provided on the linear portion of the side surface of the pan, the rod-shaped temperature detecting means can be fixed more stably (claim 3).
Further, when the fixing portion is provided below the oil position line of the pan, the oil in the pan and the temperature detecting means come close to each other, so that the temperature of the oil can be detected more accurately (claim 4). .

In addition, if a heat shield is provided in the fixed portion, it is possible to prevent the heat from the radiant heater or the heat resistant plate from being transferred to the temperature detecting means, so that the temperature of the oil in the pan can be detected more accurately. It is possible (Claim 5).

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a cooking heater will be described below with reference to FIGS. First, as shown in FIG. 3, the main body 11 of the cooking heater is formed in a rectangular shape and is incorporated in the cooking table 12, for example. A translucent top plate 13 made of, for example, crystallized glass is provided on the upper surface of the main body 11 as a heat resistant plate. At the lower part of the top plate 13, there are heating units 14, 1 located on the left and right and serving as heat sources.
5 are provided. These heating units 14, 15
Are each made up of a plurality of radiant heaters, in this case a halogen lamp heater 16, supported by a heat insulating support 17, and the support 17 is attached to the inner bottom surface of the main body 11. Further, a heating unit 18, which is a heat source, is disposed on the back side between the heating units 14 and 15. The heating unit 18 is configured by supporting a coil heater 19, which is a radiant heater, on a support body 20.
In this case, in the heating unit 14, when performing oil cooking such as fried food cooking, it is possible to execute a cooking operation in which the temperature of oil is automatically controlled.

A jack 21 corresponding to the heating unit 14 is provided at the rear corner of the upper surface of the main body 11, and the jack 21 has a rod-shaped temperature probe 2 as a temperature detecting means.
The two plugs 23 are detachably connected. As shown in FIGS. 1 and 2, the temperature probe 22 is detachably attached to the outer surface of a frying pan 24 which is a pan for cooking deep-fried food. Specifically, a holder portion 25 is provided on the outer surface of the frying pan 24, and the temperature probe 22 is inserted into the holder portion 25. Further, a fixing portion 26 for fixing the temperature probe 22 is provided in the lower half portion of the linear portion of the outer surface of the frying pan 24.

As shown in FIG. 2, the fixing portion 26 is formed by gradually denting the frying pan 24 from the height of approximately half of the straight portion of the outer surface of the frying pan 24 downwardly to the inside of the frying pan 24. The recess 26a and the heat shield 26 having a substantially semicircular stepped shape
b. Here, the concave portion 26a is formed in a curved surface shape that matches the shape of the outer peripheral surface of the temperature probe 22, and when the temperature probe 22 is fitted into the concave portion 26a, both of them come into surface contact with each other. ing.
In this case, a temperature detecting element 22a such as a thermistor is housed inside the tip of the temperature probe 22,
The temperature detecting element 22a on the outer peripheral surface of the temperature probe 23
It is configured to make surface contact with at least one-third or more of the outer peripheral surface of the portion.

The tip of the temperature probe 22 abuts on the upper surface of the heat shield 26b of the fixed portion 26, so that a predetermined distance is secured between the tip of the temperature probe 22 and the top surface of the top plate 13. There is. In addition, the heat shield 26b
Thus, the heat generated from the halogen lamp heater 16 or the top plate 13 is prevented from hitting the tip portion of the temperature probe 22. The recess 26a and the heat shield 26b are arranged on the side wall of the pot 24 below the oil position line 24a formed on the inner surface of the pot 24. Further, the holder portion 25 is formed such that the size of the opening on the upper side, which is the insertion side of the temperature probe 22, is larger than that of the opening on the lower side, so that the temperature probe 22 can be easily inserted. The lower opening is set to a size such that when the inserted temperature probe 22 is fitted into the concave portion 26a of the fixing portion 26 and brought into surface contact with each other, the two are brought into close contact with each other.

On the other hand, on the front surface of the main body 11, as shown in FIG.
8, 29 are provided. Of these, the operation panel 29 on the right side is for the coil heater 18 and the heating unit 15 on the right side.
, And various operation switches for the roaster 27 are provided, description thereof will be omitted, and the left operation panel 28 for the left heating unit 14 directly related to the present invention will be described below with reference to FIG. To do.

On the upper part of the operation panel 28, a level indicator 30 as a light emitting display means is constructed by arranging eight unit indicators 30a on the left and right. These eight unit indicators 30a are composed of LEDs 31 that emit red light (see FIG. 5).

Further, a designation switch 32 for normal cooking and a designation switch 33 for fried food cooking are provided on the lower left side of the operation panel 28. And designated switch 3
A function indicator 34 consisting of an LED emitting green light is provided in the immediate vicinity of 2, and a "down" key 35 and an "up" key 36 for adjusting the heating output of the heating unit 15 are provided on the right side thereof. . Similarly, the designated switch 33
A function indicator 37 consisting of an LED that emits red light is provided in the immediate vicinity of, and a "down" key for setting the control temperature (oil temperature) of the fried food cooking executed by the heating unit 14 is provided on the right side thereof. 38 and an "up" key 39 are provided.

Next, FIG. 5 shows a portion related to the heating unit 14 which is heated by the operation of each switch provided on the operation panel 28 in the electrical configuration of the cooking heater described above. In FIG. 5, the halogen lamp heater 16 of the heating unit 14 is connected to the AC power supply 41 via the triac 40. The triac 40 is configured to be on / off controlled by a microcomputer 42 via a drive circuit 43. In this case, the microcomputer 42 is configured to control the energization of the halogen lamp heater 16 by, for example, phase control to increase / decrease the heating output of the heating unit 14.

The microcomputer 42 is supplied with operating power from a constant voltage circuit 44 and a reset signal from an initialization circuit 45. Further, the detection signal from the temperature probe 22 is given to the microcomputer 42 via the A / D converter 46, and the designated switches 32 and 33 and the "down" keys 35 and 38 or the "up" keys 36 and 36, A switch signal from 39 is provided. The microcomputer 42 drives and controls the halogen lamp heater 16, each of the indicators 30, 34, 37, and the buzzer 47 according to an operation program stored therein.

When cooking fried foods, the microcomputer 42 causes the halogen lamp heater 16 so that the oil temperature becomes equal to the set control temperature based on the temperature detected by the temperature probe 22 previously attached to the frying pan 24.
Is configured to be energized. At this time, the temperature probe 22 directly detects the temperature of the frying pan 24, but there is a strong correlation (both are substantially equal) between the temperature of the frying pan 24 and the oil temperature. Based on the correlation, the microcomputer 42 can accurately detect the oil temperature based on the temperature detected by the temperature probe 22. When the oil temperature reaches the set control temperature, the buzzer 47
Sounds, and then the halogen lamp heater 16 is on / off controlled so as to maintain the oil temperature at the control temperature. In this case, the microcomputer 42 functions as the heating control means in the present invention.

Thus, according to the present embodiment having the above-mentioned structure, the temperature probe 22 is fixed to the fixing portion 26 on the outer surface of the frying pan 24.
Since the temperature probe 22 is fixed to the outer surface of the frying pan 24 and the predetermined distance is secured between the upper surface of the top plate 13 and the tip of the temperature probe 22, the temperature probe 22 is fixed to The temperature of the frying pan 24 can be detected with almost no heat from the top plate 13 (and by extension the halogen lamp heater 16). And, there is a strong correlation between the temperature of the frying pan 24 and the oil temperature, specifically, the temperature of the frying pan 24 and the temperature of the oil are almost equal, so that the oil in the frying pan 24 Even if the amount is small, the temperature of the oil can be accurately detected by the temperature probe 22. As a result, the oil is not overheated, so that the cooking quality is improved.

By the way, in the conventional configuration (see FIG. 6), the temperature probe 1 is placed in the frying pan 2, so that the temperature probe 1 may be hit by an object to be cooked or accidentally touched with chopsticks or the like. There is. In such a case, the temperature probe 1 moves in the oil, so that the temperature of the oil cannot be stably detected. On the other hand, in the above-mentioned embodiment, since the temperature probe 22 is attached to the outside of the frying pan 24, it is possible to prevent the temperature probe 22 from being hit by an object to be cooked or accidentally touched with chopsticks or the like. . Therefore, the temperature of the oil can be stably detected by the temperature probe 22.

Further, in the above embodiment, the temperature probe 22 is used.
A structure in which the outer peripheral portion of the temperature probe 22 and the inner surface of the concave portion 26a of the fixed portion are in surface contact when fixed to the fixed portion 26,
Specifically, at least one-third or more of the outer peripheral portion of the outer peripheral portion of the temperature probe 22 in which the temperature detecting element 23a is housed is brought into surface contact with the concave portion 26a. Therefore, the heat from the frying pan 24 is applied to the temperature probe 22.
The temperature of the frying pan 24 and thus the oil can be detected more accurately. Further, in the above-described embodiment, since the fixing portion 26 is formed in the linear portion on the side surface of the frying pan 24, when the rod-shaped temperature probe 22 is fixed to the side surface of the frying pan 24, it becomes easy to fix and both of them are fixed. Contactability is also improved.

Further, since the fixing portion 26 is provided below the oil position line 24a, even when only a small amount of oil is put in the frying pan 24, the tip of the temperature probe 22 is located near the oil surface. Come to do. Therefore, the temperature probe 22 can more accurately detect the temperature of the oil in the frying pan 24. Moreover, in the above-described embodiment, since the heat shield portion 26b is provided on the fixed portion 26, it is possible to reliably prevent the heat from the halogen lamp heater 16 and the top plate 13 from hitting the temperature probe 22. Therefore, the temperature probe 22 determines the temperature of the frying pan 24, that is, the frying pan 2.
The temperature of the oil in 4 can be detected accurately.

The present invention is not limited to the embodiments described above and shown in the drawings, but the following modifications and expansions are possible. That is, the heat shield 26a may be formed as a separate member and attached to the frying pan 24. Further, the radiant heater, which is the heat source of the heating unit 14, may be configured by a coil heater such as a nichrome wire heater or a ribbon heater.

[0026]

As is apparent from the above description, the present invention has the following effects. According to the invention of claim 1, the temperature detecting means is fixed to the fixed portion on the outer surface of the pan, the temperature detecting means is brought into contact with the outer surface of the pan, and a predetermined distance is secured between the temperature detecting means and the heat resistant plate. With the configuration, the temperature detecting means is not affected by the heat from the heat resistant plate, and the oil temperature can be accurately detected even when the amount of oil in the pan is small. Further, since the temperature detecting means is attached to the outside of the pan, it is possible to prevent the temperature detecting means from being hit or touched by the chopsticks during cooking.

According to the second aspect of the present invention, since the concave portion is formed in the fixed portion so as to come into surface contact with the temperature detecting means, the temperature detecting means comes into contact with the pan over a wider area, and the temperature of the pan is more accurate. Can be detected. According to the invention of claim 3, since the fixing portion is provided on the linear portion of the side surface of the pan, the rod-shaped temperature detecting means can be stably fixed to the side surface of the pan, and the temperature detecting means and the outer surface of the pan can be connected to each other. It is possible to improve the contactability of the.

According to the invention of claim 4, since the fixing portion is provided below the oil position line, the oil in the pan and the temperature detecting means come close to each other, and the temperature of the oil in the pan is more accurate. Can be detected. According to the invention of claim 5, the heat shield is provided on the fixed portion, and the heat shield reliably prevents the temperature detecting means from receiving heat from the radiant heater or the heat resistant plate. It is possible to detect the temperature of oil in the pan more accurately.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the vicinity of a fixed portion of a frying pan according to an embodiment of the present invention.

FIG. 2 is a partial vertical cross-sectional view showing a state in which a temperature probe is fixed to a fixing portion.

FIG. 3 is an overall perspective view.

FIG. 4 is a front view of an operation panel.

FIG. 5 is an electric circuit diagram

FIG. 6 is a diagram corresponding to FIG. 1 showing a conventional example.

FIG. 7 is a diagram showing a positional relationship between an oil surface and a temperature probe when a small amount of oil is put into a pan for cooking.

[Explanation of symbols]

13 is a top plate (heat resistant plate), 16 is a halogen lamp heater (radiant heater), 22 is a temperature probe (temperature detecting means), 24 is a frying pan (oil cooking pot), 2
4a is an oil position line, 26 is a fixed portion, 26a is a concave portion, 26b
Is a heat shield, and 42 is a microcomputer (heating control means).

Claims (5)

[Claims] 1. A heating cooker configured to heat an oil cooking pot placed on a heat-resistant plate by a radiant heater through the heat-resistant plate, wherein the cooker is detachably attached to the pan. A rod-shaped temperature detecting means for detecting the temperature of the oil in the pan, a heating control means for controlling the radiant heater based on a detection signal from the temperature detecting means, and a temperature detecting means provided on the outer surface of the pan for detecting the temperature. And a fixing portion for fixing the means to the outer surface of the pot and for fixing a predetermined distance between the tip of the temperature detecting means and the upper surface of the heat-resistant plate. . 2. The heating cooker according to claim 1, wherein the fixing portion has a concave portion that comes into surface contact with the temperature detecting means. 3. The heating cooker according to claim 1, wherein the fixing portion is provided on a straight line portion on a side surface of the pot. 4. The heating cooker according to claim 1, wherein the fixing portion is provided below an oil position line provided on the inner surface of the pan. 5. The heating cooker according to claim 1, wherein the fixing portion has a heat shielding portion that shields heat from the radiant heater or the heat resistant plate.