JPH03211312A - gas cooker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a gas cooker that controls combustion by detecting the temperature of an object to be heated.

BACKGROUND ART Conventionally, this type of gas cooker has had a configuration as shown in FIG. In FIG. 4, the gas cooker 1 has a burner 2 and a trivet 4 on which an object to be heated 3 is placed. The temperature sensor section 6 is configured to detect the temperature of the object to be heated 3 and control the combustion of the burner 2 (for example, in actual use). Publication No. 62-46981).

Problems to be Solved by the Invention In such a conventional configuration, since the temperature sensor 6 protrudes beyond the upper end of the protection tube 6, the object to be heated 3 is not placed on the trivet 4.
When placed, the temperature sensor section 6 contacts the object to be heated 3 and rests on the protection tube 6. In this case, a gap is created between the upper end of the protection cylinder 6 and the bottom of the object to be heated 3. Although the temperature sensor section 6 is originally set to detect the temperature by receiving the heat of the object to be heated 3, the combustion heat of the burner 2 passes through the gap and reaches the temperature sensor section 6 as radiant heat, causing the temperature sensor to detect the temperature. The unit 6 detected a temperature higher than the temperature of the object to be heated 3, causing a malfunction. Furthermore, if a net is used instead of a pot for the object to be heated 3, the temperature sensor section 6 will not be in contact with the net, and in such a case the temperature sensor section 5 will be connected to the burner. There was a problem in that the combustion of the burner was controlled regardless of the cooking state of the food placed on the grill by receiving only the combustion heat of No. 2, and the combustion was stopped by the combustion heat during cooking.

The present invention is intended to solve these problems, and aims to prevent malfunction of a temperature sensor provided in a gas cooker and at the same time expand the usable range of the gas cooker.

Means for Solving the Problem In order to solve this problem, the present invention has a burner camp having a through hole in the center and a plurality of tooth-shaped flame holes arranged around the burner camp and a burner body that are removably fitted together. A freely movable hollow cylindrical protective tube is provided in the through hole, and the tip of the temperature sensor section is lower than the upper end of the protective tube and higher than the upper end of the trivet.

With this configuration, when an object to be heated is placed on the gas cooker, the freely movable protective tube comes into contact with the bottom of the object, and the protective tube moves further downward, protecting the bottom of the object. The temperature sensor part comes into contact with. At this time, the protection tube and the temperature sensor section are in contact with the object to be heated such that the protection tube protects the temperature sensor section.

Further, when no object to be heated is placed in the gas cooker, the temperature sensor is housed in a position lower than the upper end of the protective tube, that is, inside the protective tube. Therefore, the temperature sensor is completely shielded from radiant heat supplied from the outside by the protective tube, so there is no abnormal temperature detection.
Moreover, the temperature of the object to be heated can be accurately detected.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. Note that components having the same functions as those of the conventional example are given the same numbers and their explanations are omitted.

1 to 3, in the gas cooker 1, reference numeral 7 denotes an operation unit for controlling fuel supply to the burner 2, which is composed of a burner cap 8 and a burner body 9 of the gas cooker 1; Combustion flame formed when, 11
12 is a protection tube that is applied to the upper side of the gas cooker 1 by means of a spring body 13; 14 is the upper end of the protection tube 12; It is constituted by a temperature sensor section 14 surrounded by the protection tube 12 at a position lower than the upper end of the protection tube 12.

The temperature sensor section 14 includes a temperature sensing element 15 and a spring body 16 inside, and is installed so as to be movable up and down. In the above configuration, the gas cooker 1 is used by operating the operation unit 7 without placing the object to be heated 3 on the trivet 4, supplying fuel to the burner 2, forming a combustion flame 1o, and starting combustion. When the temperature sensor 16 is in the direction of the flame 1o,
Since the heat of the combustion flame 1o is not received by radiation, convection, etc., the fuel supply to the burner 2 will not be stopped due to erroneous temperature sensing.

In addition, since the temperature sensor part 14 is protected from heat by the protection tube 12, there is no need to worry about the heat resistance of the temperature sensor part 14, and there is no need to worry about the heat resistance of the temperature sensor part 14. This makes it possible to use materials with low heat resistance for the temperature detection section.

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

(1) A protective cylinder is installed in the through hole in the center of the burner, which is made up of the burner cap and burner body, and a temperature sensor is placed inside the protective cylinder by lowering it below the top of the protective cylinder, so the gas cooker will not be exposed to heat. It can now be used without placing anything on it, expanding the usable range of gas cookers.

(2) Since the temperature sensor is placed below the top of the protection tube within the protection tube, the temperature sensor is no longer required to have a high temperature resistance, and the range of materials used for the heat-sensitive element of the temperature sensor is expanded. , the accuracy of temperature control is improved.

[Brief explanation of drawings]

FIG. 1 is an external view of a gas cooker according to an embodiment of the present invention;
FIG. 2 is an enlarged sectional view of the main part, FIG. 3 is an enlarged sectional view of the main part, and FIG. 4 is a sectional view of the main part of a conventional gas cooker. 8...Burner cap, 9...Burner body, 11...Through hole, 12...Protection tube, 14...Temperature sensor.

Claims (1)

[Claims] A burner with a through hole in the center and a burner body removably fitted into a burner cap with multiple tooth-shaped flame holes arranged around the periphery, and a burner with a tip located at the center of the burner and placed higher than the top of the trivet. and a temperature sensor section that is movable up and down, and installed outside the temperature sensor section in the through hole in a hollow cylindrical shape and that is movable up and down and whose upper end is higher than the upper end of the temperature sensor section. Gas cooker with.