JPH0520260Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application and overview of the invention] The present invention relates to a temperature detection device for a cooker, particularly a temperature detection device for the inside of a cooking pot in a cooker. The aim is to improve the detection accuracy by making it possible to detect it.

[Prior art and its problems] In cooking utensils such as rice cookers, by changing the heat power for heating the pot to a predetermined heat power during the cooking process,
It improves the finish of cooking. For example, when the temperature inside the pot reaches a constant temperature, that is, when the inside of the pot reaches a boiling state, it is a particularly effective time to change the heat power, and the heat power is usually set low at this point.

Therefore, in order to capture this point, the actual fairness 2-
There is a device disclosed in Japanese Patent No. 93, in which the pot 1 is connected to the inner lid 11 and the outer lid 1 as shown in FIG.
2, and the temperature sensing element 3 is accommodated in a cylindrical shaft portion 2 provided on the outer cover 12 for supporting the outer cover.

Since the shaft portion 2 penetrates the inner lid 11 and its tip is locked to the inner lid 11, the tip of the shaft portion 2 is exposed inside the pot 1 and the food to be cooked in the pot 1 is exposed. When the water reaches a boiling state, the temperature sensing element 3 housed within the shaft portion 2 can detect this. Then, the control device C (not shown) is operated based on the detection output of the temperature detection element 3, and the amount of heating by the heating device for the pot 1 is reduced.

However, this conventional device has a problem in that the detection accuracy of the temperature detection element 3 is insufficient.

The temperature sensing element 3 has a structure in which the sensing element 30 is sealed in a metal tube, but since the temperature sensing element 3 is surrounded by the wall forming the shaft portion 2, the temperature sensing element 3 This is because the temperature inside the pot 1 does not directly act on the temperature sensing element 3 even if the accommodating portion of the pot 1 is exposed inside the pot 1.

The present invention provides a shaft portion in which a pot 1 is closed by an inner cover 11 and an outer cover 12, and a temperature sensing element 3 for controlling the amount of heating of the pot 1 is provided on the outer cover 12. 2, and the shaft portion is made to pass through the inner lid 11 and be exposed inside the pot 1'', the detection accuracy of the temperature detection element 3, especially the detection sensitivity is The technical challenge is to improve it.

[Technical Means] The technical means of the present invention taken to solve the above problems is as follows: ``The shaft portion 2 is constituted by a pair of shaft half halves 2a and 2b which are vertically divided into two parts, The temperature sensing element 3 is housed in the boundary between the half bodies 2a and 2b, and the tip of the temperature sensing element 3 including the sensing element 30 is made to directly protrude from the tip of the shaft 2.

[Operation] The above technical means of the present invention operates as follows.

Since the tip of the temperature sensing element 3 housing the sensing element 30 directly protrudes from the tip of the shaft 2, the pot 1
The temperature inside will directly act on the temperature sensing element 3.

Furthermore, when mounting the temperature sensing element 3 on the shaft portion 2, the shaft portion 2 is divided into vertically divided shaft portion halves 2a, 2.
b, it is only necessary to attach the shaft part 2 to the boundary between these halves with the temperature sensing element 3 positioned at a predetermined position. The degree of protrusion of the tip can be set appropriately.

[Effects] Since the present invention has the above configuration, it has the following unique effects.

Since the temperature detection element 3 directly detects the temperature inside the pot 1, the detection accuracy, that is, the detection sensitivity is improved compared to the conventional one.

Further, since the temperature sensing element 3 is housed at the boundary between the shaft halves 2a and 2b, the temperature sensing element 3 can be easily mounted. Furthermore, temperature sensing element 3
Since the positioning accuracy of is improved, the detection accuracy is also improved in this respect.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 and 2.

This embodiment is a temperature detection device implemented in a gas rice cooker and configured to detect the temperature inside a rice cooker 10 serving as a pot 1. shaped heat insulating body 14
The heat insulator 14 is housed in the heat insulating body 14 and is supported by the upper end of the heat insulating body 14 so as to be removable. Said exterior case 1
A gas burner B for heating the bottom of the rice cooker pot 10 housed therein is housed in the bottom of the rice cooker 3, and the entire rice cooker pot 10 is heated by the combustion heat of this burner B. The amount of heating is controlled by the output from the control device C housed in the bottom of the outer case 13.

The control device C receives outputs from a detection device 4 that detects the temperature at the bottom of the rice cooker 10 and a temperature detection element 3 that detects the ambient temperature inside the rice cooker 10, and operates according to these outputs. The thermal power of gas burner B is adjusted at a predetermined timing. The configuration and the timing for adjusting the firepower are the same as those of the conventional one, and the control device C
Then, the output from the detection element 30 of the temperature detection element 3 is compared with the set temperature, and when the inside of the rice cooker 10 is in a state of steam generation, it is inserted into the circuit to the gas burner B and the gas amount adjustment valve V is set to the throttle state. This changes the firepower to a smaller value.

The pot 1 includes an outer lid 12 that is covered with an outer case 13 and supported in a single-open state by one side of the upper end of the outer case 13, and an inner lid that is removably attached to the back side of the outer cover 12. The inner cover 11 is closed by a lid 11, and the tip of the shaft portion 2 protruding from the center of the back surface of the outer lid 12 engages with the peripheral edge of an opening 17 formed in the center of the inner lid 11. In order to make this engaging part removable, the peripheral edge of the opening 17 is covered with an annular elastic body 15, and an annular protrusion 21 is provided at the tip of one shaft part 2. It is configured to be press-fitted into the annular elastic body 15.
Therefore, the inner cover 11 is supported by the outer cover 12 due to the elastic engagement force between the annular protrusion 21 and the annular elastic body 15.

The shaft portion 2 is made of synthetic resin, and is composed of shaft half bodies 2a and 2b, and these shaft half bodies 2a and 2b are formed by a shaft body having a semicircular cross section. It is configured. The shaft half body 2
The contact surfaces of a and 2b are flat parts, but the shaft half 2
A semicircular groove 22 is formed in the plane part b along the longitudinal direction, and the temperature sensing element 3 is accommodated in the through hole formed by the groove 22 and the plane part. The temperature sensing element 3 has a slightly swollen tip and is integrated with a cord covering part 32 that passes through the heat insulating layer 16 provided on the back surface of the outer cover 12. And the temperature sensing element 3
penetrates the lower wall of the heat insulating layer 16 and passes through the shaft half 2
The temperature sensing element 3, which is drawn out to the joining surface of the parts a and 2b and includes the sensing element 30, is mounted in such a manner that the tip thereof protrudes from the shaft part 2.

A semicircular flange half 23 is provided at the base end of the shaft half bodies 2a, 2b, so when the flange halves 23, 23 are joined and screwed to the bottom wall of the heat insulating layer 16, The shaft portion 2 is formed to protrude from the back surface of the outer lid 12. At this time, if the temperature sensing element 3 is installed in advance, the temperature sensing element 3 can be attached in a predetermined state.

Particularly, in this embodiment, since the lower end of the joint of the shaft half bodies 2a and 2b is configured to forcibly press-fit a retaining ring outwardly to form the annular protrusion 21, the inner lid 1
There is no inconvenience that the tip of the shaft portion 2 is in an open state when the shaft portion 1 is removed.

In addition, the steam generated in the rice cooking pot 10 is removed from the inner lid 11.
It is discharged into the space between the outer cover 12 and the outer cover 12 through the through holes 18, 18 formed in the . Further, the present invention can be applied to other cooking devices other than rice cookers.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is a detailed view of its main parts, and Fig. 3 is an explanatory view of a conventional example. , 12...outer lid, 3...
...Temperature sensing element, 2...Shaft portion, 2a, 2b...Shaft half body.

Claims (1)

[Scope of utility model registration request] The pot 1 is closed with an inner lid 11 and an outer lid 12,
A temperature sensing element 3 for controlling the amount of heating of the pot 1 is disposed on a shaft portion 2 provided on the outer lid 12, and the shaft portion is penetrated through the inner lid 11 and exposed inside the pan 1. In the temperature detection device for a cooking device, the shaft portion 2 is composed of a pair of shaft half halves 2a and 2b which are vertically divided into two parts, and a temperature detection device is installed at the boundary between the shaft half halves 2a and 2b. accommodating element 3;
A temperature detection device for a cooking appliance in which the tip of a temperature detection element 3 including a detection element 30 directly protrudes from the tip of a shaft portion 2.