JPS6360655B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a safety device for a cooking appliance in which a cooking appliance body and a temperature regulator are separated.

Conventional configurations and their problems Conventionally, home cooking appliances such as electric deep fryers and electric pressure cookers have been configured so that the cooking appliance body and the temperature regulator having a heat-sensitive part can be separated so that they can be washed completely. However, in this type of cooker,
A sheathed heater is welded to the bottom of the cooker, and only the terminal pin provided at the end of the sheathed heater is exposed as an electrical component, making it possible to wash the cooker completely, eliminating temperature fuses, etc. Providing a safety device at the bottom of the main unit requires electrical connection to the sheathed heater via lead wires, which complicates the configuration, makes it impossible to wash the entire product, and has the disadvantage that the original function is impaired. Ta. Therefore, as shown in FIG. 1, a through hole is provided in the temperature regulator case 6, and a temperature fuse 3 is covered with a cover 4 made of aluminum or the like having good thermal conductivity through an insulating sheet 5 having relatively good thermal conductivity. There was one that sensed the temperature at the bottom of the cooker body 1 when a temperature controller was attached to the cooker body. However, with this configuration, if the cover 4 is deformed by an external force or an external force is applied to the temperature regulator case 6, and a gap is generated between the bottom of the cooker main body 1 and the cover 4, the temperature at the bottom of the main body is not sensitively adjusted. There were problems such as the sensor becoming undetectable.

OBJECTS OF THE INVENTION The present invention solves these conventional problems and provides a safety device for a cooker that improves safety and is easy to assemble.

Composition of the Invention The safety device of the present invention has a temperature fuse covered with an insulating tube and a sensor pipe, and the temperature fuse is housed in a sensor pipe connected to a sensor case having a built-in temperature control sensor at its tip. When the temperature regulator is attached to the cooker body, the sensor pipe is inserted into a heat-sensitive piece that exhibits a temperature approximately equal to the temperature at the bottom of the cooker body, and the temperature fuse senses the temperature at the bottom of the cooker body. It is.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 2 and 3, 7 is the pressure cooker body, 8 is the main body handle, 9 is the lid handle, and 10 is a weight-type safety valve that is set to operate when the pressure inside the pot exceeds the normal control pressure. 11 is a sheathed heater welded to the bottom of the pressure cooker body 7, 12 is a heat sensitive piece welded to the bottom of the pressure cooker body 7, and a hole 14 is provided so that a sensor case 13 and a sensor pipe 19 can be inserted therein. The sensor case 13 is a cylindrical case made of aluminum with a bottom that houses the sensor 15 that detects the temperature inside the pot. After inserting the sensor 15 with adhesive with good thermal conductivity and caulking the opening, insert the sensor pipe. 19 and is fixed to the sensor pipe 19 by caulking with a groove provided on the outer periphery of the sensor case 13. The other end of the sensor pipe 19 is fixed to the control device cover 16. A solid temperature fuse 17 is covered with an insulating tube 20 and inserted into the sensor pipe 19. A control device 18 controls the amount of heat generated by the sheathed heater 11 based on a signal from the sensor 15, and is fixed within the control device case 16.

The operation in the above configuration will be explained. Heat sensitive piece 12
A sensor case 13, a sensor 15, a sensor pipe 19, a temperature fuse 20,
When the heat sensitive part of the control device consisting of the control device 18, control device cover 16, etc. is inserted, the sheathed heater 11
The terminal and the blade holder of the temperature controller are connected, and the sheathed heater 11 is energized. When the temperature inside the pot approaches the set temperature, the sensor 15 senses the temperature, and the control device 18 controls the amount of heat generated by the sheathed heater 11 to maintain the temperature inside the pot at the set value, thereby controlling the cooking pressure. Here, if the control device 18 fails and the sheathed heater 11 continues to be energized and the temperature inside the pot continues to rise, the temperature fuse 20 senses the temperature through the heat sensitive piece 12 and blows it, causing the sheathed heater 11 to be energized. Release. Therefore, the heat sensitive piece 12 allows the temperature fuse 20 to easily sense the temperature inside the pot.
Because it is inserted inside the device, it responds quickly and operates stably, improving safety. It also has the advantage of being rational in structure and easy to conduct tests because it allows heat-sensitive parts to be concentrated.

Effects of the Invention As is clear from the above invention, the safety device for the cooker of the present invention is achieved by installing the temperature fuse in the sensor pipe so that it is located in the heat-sensitive piece that can easily sense the temperature inside the pot. , it is possible to quickly sense abnormal temperatures inside the pot, and since the sensing position is constant, the operation is stable, improving safety and making assembly easier.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional pressure cooker, Fig. 2 is a sectional view of a pressure cooker showing an embodiment of the present invention, Fig. 3A is an enlarged sectional view of main parts of the same pressure cooker, Figure B is an enlarged sectional view of another main part of the same pressure cooker. 13...Sensor case, 15...Sensor,
17...Temperature fuse, 19...Sensor pipe, 20...Insulation tube.

Claims (1)

[Claims] 1. A cooker body equipped with a heater at the bottom, and a temperature regulator having a heat-sensitive part that is removably inserted into a through hole of a heat-sensitive piece provided in the cooker body,
The heat sensitive part is constructed by placing the sensor in a cap-shaped sensor case with an opening on one side, and caulking the opening.
Insert one end of the sensor pipe from the outer periphery of the opening of the sensor case, caulk it with a groove provided on the outer periphery of the sensor case, and insert a temperature fuse covered with an insulating tube from the other end of the sensor pipe,
Cooker safety device with this end connected to the control case.