JP3151431B2 - Abnormal temperature rise prevention device for grill - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grill for kitchen equipment such as a built-in stove, a table stove and the like, which is for preventing an abnormal temperature rise inside the grill due to forgetting to turn off gas or the like. It is.

[0002]

2. Description of the Related Art In general, in grills for kitchen appliances such as built-in stoves and table stoves, cooking materials such as fish and oil such as fish oil in the grill ignited due to forgetting to turn off the grills when using the grills, and damage to the appliances. And may cause a secondary fire. Conventionally, the following measures have been taken to prevent this. For example, there is a timer for forgetting to turn off the gas, which is a method of automatically shutting off gas when a certain period of time has elapsed since the start of use. For example, in the case of double-sided baking, gas is cut off in about 15 minutes, and in the case of single-sided baking, gas is cut off in about 30 minutes. Another example is disclosed in JP-A-9-187385. As shown in FIG. 10, in a double-sided grill, a sensor 3 for detecting the temperature of the bottom of a water tray 2 in a grill chamber 4 surrounded by a grill case 1 is provided below the water tray 2. When the temperature of the water tray 2 decreases and the water in the water tray 2 decreases and reaches a certain internal temperature and the amount of water, the sensor 3 detects the temperature of the water tray 2 that is equal to or higher than a predetermined value and shuts off the gas. It is structured to prevent fire in the grill storage 4. In FIG. 10, reference numeral 5 denotes a grill burner.

[0003]

However, the former forgotten timer, which is the former of the above-mentioned conventional example, is not safe because it does not directly detect the temperature inside the grill storage but temporally shuts off. Yes, but with uncertainty. The latter conventional method, in which the sensor 3 is attached to the bottom of the water tray 2, has the following problem. In this case, grill 1
The contact between the water tray 2 and the sensor 3 is an absolute condition, there is a problem that it is difficult to manage it, there is a problem that it is difficult to confirm in the assembled state, and a problem that the precision of parts is necessary is there. Further, since the position of the sensor 3 is located on the bottom surface of the grill 1, there is a possibility that the accuracy of the sensor 3 may be changed by water or oil or fat spilled from the water tray 2 of the grill 1. In addition, since the temperature of the inside of the grill storage 4 is not directly detected, there is a problem that even if the food such as fish burns, the detection cannot be performed if a large amount of water remains in the water dish 2 and the temperature of the sensor 3 is low.

[0004] The present invention has been made in view of the above description, and can detect the temperature inside the grill storage and shut off the gas by detecting the temperature inside the grill storage irrespective of the amount of water in the water dish and the state of the cooked food. An object of the present invention is to provide an apparatus for preventing abnormal temperature rise of a grill, which can be improved.

[0005]

According to a first aspect of the present invention, there is provided an apparatus for preventing an abnormal rise in temperature of a grill according to the present invention, wherein a water tray is drawn out from the bottom of a grill compartment enclosed by a grill case. in grille provided freely, glyceryl
A recess 17 is provided on the inner wall surface of the container, and the recess 17 is
Sensor 3 that detects the temperature inside the chamber above
The cover 6 for preventing radiant heat due to combustion is
The sensor 3 is mounted so as to cover the sensor 3, and the combustion of the gas is shut off based on the detection result of the abnormal temperature by the sensor 3. The temperature of the inside of the grill 4 is detected by the sensor 3 and shut off when an abnormal temperature is reached, so that the phenomenon can be captured directly from the conventional timer for forgetting to turn off or the sensor at the bottom of the water tray, It is possible to reliably prevent ignition or the like of the grill interior 4 due to abnormal heating. Also, by disposing the sensor 3 in the concave portion 17,
The distance between the sensor 3 and the food A and the bar
Radiant heat can be prevented, and the temperature can be more accurately detected.
As a result, abnormal temperature rise can be reliably prevented. Moreover, oil stains,
The cover 6 for preventing radiant heat due to combustion is attached to the sensor in the recess 17.
3 so that it fits in the recess 17
Of sensor 3 with cover 6
And can prevent oil stains from adhering.
Thus, the temperature can be detected more accurately.

[0006]

[0007]

Further, in the apparatus for preventing abnormal temperature rise of a grill according to a second aspect of the present invention, in the first aspect, means is provided near the sensor 3 for supplying outside air and cooling. After the safety operation is activated due to the abnormal temperature rise, outside air can be introduced into the vicinity of the sensor 3 to cool the sensor 3, and the switch can be quickly restored after the safety operation is activated.

[0009]

FIG. 1 is a schematic diagram of a grill, and FIG.
3 shows a state in which a gas stove having a grill is built in a kitchen cabinet, and FIG. 3 shows only the grill portion of FIG. The grill is provided with a water tray 2 at the bottom of the grill compartment 4 in the grill case 1 so as to be freely inserted and removed in the front-rear direction, and a grill burner 5 is attached to the upper portion of the grill compartment 4.
The main body is configured by integrally providing a grill door 7 for opening and closing the front opening of the water tray 2 with the water tray 2. In the case of this example, this grill is incorporated in a casing 9 of a gas stove 8 as shown in FIG. 2, and this gas stove 8 is built in a kitchen cabinet 10. A stove burner 11 and a gotoku 12 are provided on the upper surface of the gas stove 8, and the stove burner 11 and the gotoku 12 are exposed on the upper surface of the counter 13.

The grill case 1 is formed in the shape of a rectangular box having a front surface opened by a top plate 1a, side plates 1b on both sides, a bottom plate 1c at the bottom, and a rear plate 1d at the rear. Exhaust path 14 is derived from the exhaust path 1
4 communicates with an exhaust port 15 on the upper surface of the gas stove 8. A grill 16 is arranged on the water plate 2 arranged in the inside of the grill compartment 4 so that the water plate 2 can be filled with water and a dish A such as fish can be placed on the grill 16 and grilled. Has become. In the case of this example, the grill is a single-sided grill provided with a grill burner 5 at the upper part of the inside 4 of the grill, but it may be a double-sided grill provided with burners at both lower sides of the grill case 1.

The rear plate 1d of the grill case 1 is a substantially rectangular plate which is long in the left-right direction as shown in FIGS. 5 and 6, and is concavely bent backward so as to extend in the left-right direction except for both ends in the left-right direction. A concave portion 17 is provided, and a sensor 3 for detecting a temperature at a position deviated to the left from the center in the left-right direction of the concave portion 17 is mounted on the inner surface of the concave portion 17 as shown in FIGS. The third lead wire 28 is led out behind the rear plate 1d. The sensor 3 is like a thermostat that switches off when a temperature higher than a predetermined value is detected. A substantially U-shaped cover 6 is attached to a portion where the sensor 3 is attached so as to cover the sensor 3. When attaching the cover 6 having a substantially U-shape in plan view, the fixing pieces 6b and 6c derived from the side pieces 6a of the cover 6 are inserted into the slits 19a and 19b of the rear plate 1d, and the fixing piece 6b is bent. A plurality of air supply holes 18 are arranged below the portion to which the sensor 3 is attached, and after the safety operation described later is activated, outside air is introduced from the air supply hole 18 and the sensor 3 is turned on.
It is designed to cool down. At this time, since the air supply hole 18 is located below the flange 2a of the water tray 2, the air supply hole 18
A through hole 21 (shown in FIG. 7) is provided in the flange 2a so that the air supplied from the air passes upward, so that the air introduced from the air supply hole 18 reaches the sensor 3 through the through hole 21. Has become.

When cooking is performed on the grill, the temperature of the inside of the grill chamber 4 depends on the amount of the food A such as fish and the amount of water in the water tray 2 as shown in FIG. Going up. At this time, the speed of the temperature rise changes depending on the amount of the food A and the amount of water. If the user forgets to turn off the heat, the temperature rises to a temperature at which the food A such as fish, oil, or the like is ignited. Therefore, in the present invention, when the sensor 3 detects the ambient temperature of the inside of the grill chamber 4 and detects a predetermined temperature between cooking and ignition, the supply of gas is shut off to prevent ignition of the grill chamber 4 due to abnormal heating. be able to. In this way, by detecting the temperature of the inside of the grill 4 and shutting off the gas supply, it is possible to directly catch the phenomenon as compared with the timer method of forgetting to turn off or detecting the temperature of the bottom of the water tray 2 and safe. Operation can be performed reliably.

When the temperature of the bottom of the conventional water tray 2 is indirectly detected by the sensor 3, there is the following problem.
Such a problem does not occur when the temperature of the inside of the grill storage 4 is directly detected as in the present invention. When detecting the temperature at the bottom of the water dish 2, the distance to the grill burner 5, which is the upper burner, is short, the influence of the burner radiant heat is strong, and when the grill door 7 is closed (normal use), the food A is turned over. When the grill door 7 is open, the temperature difference is too large and an appropriate temperature cannot be set.
However, when the grill door 7 is opened, the sensor 3 is heated to a high temperature by the radiant heat of the burner without passing through the water tray 2 and malfunctions.) However, when the ambient temperature of the inside of the grill storage 4 is detected as in the present invention, such a problem is eliminated.

FIG. 9 shows a circuit for shutting off the instrument plug (safety valve) 24 by detecting the temperature of the sensor 3.
A sensor 3 composed of a thermostat is provided in a circuit 26 in which a thermocouple 25 for detecting combustion of the grill burner 5 is inserted.
Are inserted in series. That is, when the grill burner 5 is burning, the instrument plug 24 is opened by the thermoelectromotive force generated by the thermocouple 25, but when the sensor 3 detects a temperature equal to or higher than a predetermined value, the switch is opened and the electromotive force is changed. Is shut off, the instrument plug 24 is closed, and the gas supply is shut off.

Further, in the case of the present invention , the sensor 3 is disposed in the concave portion 17 of the rear plate 1d of the grill case 1. However , when the sensor 3 is disposed in the concave portion 17 as described above, the sensor 3 reduces the influence of the radiant heat of the grill burner 5. It can be provided at a position where it can be hardly received and at which the food A such as fish or the grill 16 does not hit. Further, since the sensor 3 is provided on the rear plate 1d, the sensor 3 does not hinder the taking in and out of the water dish 2 and the food A. Further, in the embodiment of the present invention, the concave portion 17 is provided in the rear plate 1d and the sensor 3 is provided in the concave portion 17. However, this is preferable in terms of the design of the grill.
When the position of the sensor 3 is provided on the side surface plate 1b, it is possible to cope with this by providing the concave portion 17 on the side surface and arranging the sensor 3; Is difficult to process. Further, in the case of the present invention, by covering the sensor 3 with the cover 6, the sensor 3 is not affected by the radiant heat and the accuracy of temperature detection by the sensor 3 does not decrease without oil stains or the like being attached. In addition, the temperature can be detected more accurately, and abnormal temperature rise can be reliably prevented. Further, in the present invention, outside air outside the grill case 1 is supplied from the plurality of supply holes 18, and the outside air flows to the sensor 3 through the through holes 21 of the water tray 2,
Cooling of the sensor 3 after the safety operation for shutting off the gas is promoted, and the switch can be returned quickly after the safety operation. In addition,
Normally, ventilation to the inside of the grill compartment 4 is from the front, but in the case of the present invention, air is also supplied from the rear air supply hole 18, which may affect the temperature of the sensor 3 during normal use. There is not much air supply from the pores 18 and the temperature of the sensor 3 is not significantly affected.

[0016]

According to a first aspect of the present invention, there is provided a grill provided with a water tray that can be pulled out at the bottom of the grill chamber surrounded by a grill case. A sensor that detects temperature is provided, and gas combustion is shut off based on the result of detection of abnormal temperature by this sensor, so the abnormal heating phenomenon can be reduced directly from the conventional forgetting timer and the sensor at the bottom of the water dish. It can be caught and reliably prevent ignition etc. in the grill storage due to abnormal heating. In addition, regardless of the amount of water and the state of the food, the temperature in the grill storage is detected and the ignition etc. is reliably performed. Can be prevented. In addition,
A recess is provided on the inner wall of the cabinet, and a sensor is
The distance between the sensor and the food and the bar
Radiant heat can be prevented, and the temperature can be more accurately detected.
Abnormal temperature rise can be reliably prevented.
Cover to prevent radiant heat from oil contamination and combustion.
The sensor was installed so as to cover the sensor.
Cover with a cover to reduce the effects of radiant heat.
To prevent oil stains from adhering.
The temperature can be accurately detected.

[0017]

[0018]

Further, the invention of claim 2 of the present invention relates to claim 1
And have you, since there is provided a means for cooling by air supply outside air in the vicinity of the sensor, the abnormal temperature rise by introducing outside air in the vicinity of the sensor after the safety operation is activated can cool the sensors, safety operation operated After that, the switch is quickly restored.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of a grill according to an example of an embodiment of the present invention as viewed from a side.

FIG. 2 is a cross-sectional view showing the gas cooker provided with the grille according to the present invention in a built-in state.

3A and 3B show the same grill portion, wherein FIG. 3A is a cross-sectional view as viewed from a plane, and FIG. 3B is a cross-sectional view as viewed from a side.

FIG. 4 shows a mounting portion of the above sensor, and (a)
Is a cross-sectional view as viewed from a plane, and (b) is a cross-sectional view as viewed from a side.

5 (a) is a plan view, FIG. 5 (b) is a front view, and FIG. 5 (c) is a cross-sectional view as viewed from the side.

FIG. 6 is a perspective view of a rear plate of the above.

FIG. 7 is a perspective view showing a water tray and a grill lid according to the first embodiment;

FIG. 8 is an explanatory diagram illustrating a temperature change in the grill storage of the above.

FIG. 9 is a wiring diagram illustrating gas shut-off by the sensor according to the first embodiment.

FIG. 10 is a schematic cross-sectional view of a conventional example viewed from the side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Grill case 2 Water plate 3 Sensor 4 Inside of grill storage 5 Grill burner 6 Cover 17 Recess

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-174345 (JP, A) JP-A-5-172342 (JP, A) JP-A-6-105750 (JP, A) JP-A-7-174 8392 (JP, A) JP-A-62-284125 (JP, A) JP-A-59-16528 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47J 37/06

Claims (2)

(57) [Claims] 1. A grill in which a water tray is provided so as to be able to be pulled out at a bottom portion in a grill storage surrounded by a grill case.
A recess is provided on the inner wall surface of the grill, and this recess is above the water dish.
Equipped with a sensor that detects the internal temperature of the
Cover the sensor inside the recess
An apparatus for preventing abnormal temperature rise of a grill, wherein the apparatus is mounted so as to cut off gas combustion based on a result of detection of an abnormal temperature by the sensor. 2. Cooling by supplying outside air near the sensor.
The abnormal temperature rise prevention device for a grill according to claim 1 , further comprising means for providing a grill.