JP2001272039A - Temperature-sensing device for cooking utensil with heat-insulating cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the working efficiency and accuracy of assembly. SOLUTION: In the temperature-sensing device where a vertically cylindrical holder 1 is mounted to the outer periphery of the upper portion of a hollow shaft 6 so that it can freely travel vertically, the upper end of the holder 1 is blocked by a contacting heat collection part 11, a thermistor 16 for measuring temperature is mounted to the lower surface of the contacting heat collection part 11, and the outer periphery of the holder 1 is surrounded by a heat insulation cylindrical part 12 with an interval 13, the contacting heat collection part 11 is in a horizontal, circular shape, an inclination connection surface 23 that spreads obliquely downward is formed at the outer-periphery side of the contacting heat collection part 11, the annular upper end of the heat insulation cylindrical part 12 is connected to the outer-periphery end of the inclination connection surface 23, a heat insulation cover 10 that is formed in one piece by a thin metal plat that is separate from the holder 1 using the contacting heat collection part 11, the heat insulation cylindrical part 12, and the inclination connection surface 23, and the upper end of the holder 1 is welded to the lower surface of the contacting heat collection part 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature detector for cookware with a heat shield cover.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Application Laid-Open No. Hei 10-220573 discloses a vertically cylindrical holder movably mounted on an outer periphery of a vertically long hollow shaft supported by a gas stove. It is closed by the contact heat collecting part that contacts the cooking container placed on it, and a thermistor for temperature measurement is attached to the lower surface of the contact heat collecting part. In this embodiment, the contact heat collecting section has a horizontal circular shape and is formed of a thin metal plate integrally with the holder.
In addition, it is also recognized in the known publication that the contact heat collecting portion may be formed separately from the holder.

[0003]

The above-mentioned publication describes both the case where the contact heat collecting portion is formed integrally with the holder and the case where the contact heat collecting portion is formed separately from the holder. When it is formed integrally with the heat collecting cylinder, the problem that it is troublesome to attach the thermistor to the lower surface of the contact heat collecting part, and the heat shielding cylindrical part is formed separately from the holder, There was a problem that the mounting position became inaccurate. Since the heat shield cylindrical part is in contact with the holder, an incorrect mounting position will affect the measured temperature of the thermistor. In addition, when the contact heat collecting portion is formed separately from the holder, the work of attaching the thermistor becomes easy, but the cost of forming the contact heat collecting portion separately increases and the number of assembly steps increases. At the same time, the problem of inaccurate mounting position of the heat shield cylindrical portion still cannot be solved.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a heat-absorbing cover and a heat-shielding cover formed integrally with a contact heat-collecting portion, thereby securing a wide bottom surface of the contact heat-collecting portion and mounting the thermistor. In addition to facilitating the work, by attaching the contact heat collecting portion to the holder, the relative positional relationship between the heat shield cylindrical portion and the holder can be accurately secured.

[0005]

Therefore, according to the present invention, a vertically cylindrical holder 1 is vertically movably mounted on the outer periphery of a vertically long hollow shaft 6 supported by a gas stove 20, and the upper end of the holder 1 Closed by a contact heat collecting unit 11 that comes into contact with a cooking vessel 21 placed on the gas stove 20, and a lower surface of the contact heat collecting unit 11 is connected to a thermistor 1 for temperature measurement.
6 and the outer periphery of the holder 1 is surrounded by a heat shield cylindrical portion 12 with a gap 13 therebetween, and the contact heat collecting portion 11 has a horizontal circular shape. On the outer peripheral side, an inclined connecting surface 23 is formed which extends obliquely downward, and an outer peripheral edge of the inclined connecting surface 23 is connected to an annular upper edge of the heat shield cylindrical portion 12, thereby forming the contact heat collecting portion 11. , The heat shield tubular part 12 and the inclined connecting surface 23,
A heat shield cover 10 integrally formed of a separate thin metal plate, and the upper end of the holder 1 is connected to the contact heat collector 1.
1 and the upper opening 2 of the holder 1 by welding to the lower surface.
Is a temperature detecting device for cookware with a heat shield cover closed by the contact heat collecting unit 11.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a holder of the temperature detecting device for cookware according to the present invention, which is formed of a thin metal plate in a vertical cylindrical shape, and whose upper end and lower end are respectively opened to open an upper opening 2 and a lower opening 3.
In addition, a mounting flange 4 extending in the radial direction is integrally formed on the outer periphery of the upper end. A step 5 is formed on the lower side in the length (vertical) direction of the holder 1, and the lower side has a slightly smaller diameter at the step 5.

Reference numeral 6 denotes a vertical cylindrical hollow shaft formed of a thin metal plate, which has a smaller diameter than the holder 1 and has an annular washer 7 fixed to its upper end. The hollow shaft 6
The annular washer 7 is inserted into the upper opening 2 of the holder 1 from above and is brought into contact with the step 5. The lower end of the hollow shaft 6 is fixed to the main body side of the gas stove 20. A vertical key groove 8 is formed on the outer periphery of the annular washer 7, and a vertically extending ridge 9 formed on the holder 1 is slidably engaged with the key groove 8, and the holder is engaged by the engagement of the two. The rotation of the first hollow shaft 6 is restricted.

Reference numeral 10 denotes a cap-shaped heat shielding cover surrounding the upper portion of the holder 1. A circular contact heat collecting portion 11 is formed at the center of the upper surface, and an oblique outer surface of the contact heat collecting portion 11 is formed. An inclined connecting surface 23 extending downward is formed, and an outer peripheral edge of the inclined connecting surface 23 is connected to an annular upper edge of the large-diameter heat-insulating cylindrical portion 12. The heat shield cover 10 is integrally formed of a thin metal plate. The mounting flange 4 of the holder 1 is fixed to the lower surface of the contact heat collecting section 11 by welding or the like, and the upper opening 2 is closed by the contact heat collecting section 11. A gap 13 is formed between the large-diameter heat shield cylindrical portion 12 and the holder 1, and a ventilation hole 14 is formed in the inclined connection surface 23 to communicate the gap 13 to the outside.

A coil spring 15 is provided in the holder 1 between the annular washer 7 and the lower surface of the contact heat collecting portion 11, and the holder 1 is attached to the hollow shaft 6 by the elastic force of the coil spring 15. Inspire.

Reference numeral 16 denotes a thermistor for measuring temperature, which is fixed and accommodated in a thermistor mounting bracket 17 mounted on the lower surface of the contact heat collecting section 11 with heat-resistant grease 18. 19 is a cord of the thermistor 16, 21 is a cooking container such as a pot or a pot, and 22 is a flame of the gas stove 20.

[0011]

The temperature detecting device for a cooking utensil of the present invention has the lower end of the hollow shaft 6 normally attached vertically to the center of the annular flame 22 of the cooking gas stove 20, as shown in FIG. The contact heat collecting portion 11 to which the thermistor 16 is attached always projects elastically upward with respect to the hollow shaft 6 by the elasticity of the coil spring 15, and the elasticity is applied to the bottom of the cooking container 21 placed on the cooking gas stove 20. The thermistor 16 measures the temperature of the cooking vessel 21. The measured temperature is used for adjusting the heating power of the gas stove 20 and the like.

When the cooking vessel 21 is heated by the flame 22 of the gas stove 20, the annular flame 22 may sway due to wind or the like. Even in such a case, the outer periphery of the holder 1 is blocked. Since it is surrounded by the hot cylindrical portion 12, the flame 22 that has rolled is prevented from directly hitting the holder 1.

In order to assemble the temperature detecting device for cookware which operates as described above, the hollow shaft 6 is inserted into the upper opening 2 of the holder 1 from above, and the annular washer 7 is brought into contact with the step 5 so that the holder 5 1, a thermistor mounting bracket 17 is attached to the lower surface of the contact heat collecting portion 11 of the heat shield cover 10, and the thermistor 16 is placed in the thermistor mounting bracket 17 with a heat resistant grease 18 Then, the upper end of the holder 1 is welded to the lower surface of the contact heat collecting portion 11 so as to surround the upper portion of the holder 1 with the cap-shaped heat shield cover 10, thereby completing the assembly.

In the above assembling operation, the heat shield cover 10
Since the heat shield cylindrical portion 12 is formed to have a large diameter with respect to the holder 1, the lower surface of the contact heat collecting portion 11 is widely secured, so that the mounting operation of the thermistor 16 is easy, Since the heat shield cylindrical portion 12 is formed integrally with the contact heat collecting portion 11, when the contact heat collecting portion 11 is fixed to the upper end of the holder 1, the heat shield cylindrical portion 12 and the holder Since the relative positional relationship with the thermistor 1 is accurately fixed, the thermistor 1
6 does not affect the measured temperature.

[0015]

As described above, the present invention provides a gas stove 2
A vertically cylindrical holder 1 is vertically movably attached to the upper outer periphery of a vertically long hollow shaft 6 supported by an upper end of the hollow shaft 6, and the upper end of the holder 1 is in contact with a cooking container 21 placed on the gas stove 20. In a case where the heat collecting part 11 is closed, a thermistor 16 for temperature measurement is attached to the lower surface of the contact heat collecting part 11, and the outer periphery of the holder 1 is surrounded by a heat shielding cylindrical part 12 with a gap 13 therebetween. The contact heat collecting portion 11 has a horizontal circular shape, and has an inclined connecting surface 23 extending obliquely downward on the outer peripheral side of the contact heat collecting portion 11. The annular upper edge of the heat-shielding tubular portion 12 is connected, so that the contact heat collecting portion 11, the heat-shielding tubular portion 12, and the inclined connection surface 23 are separate thin metal members from the holder 1. Constituting a heat shield cover 10 integrally formed of a plate,
The upper end of the holder 1 is welded to the lower surface of the contact heat collecting portion 11 and the upper opening 2 of the holder 1 is closed by the contact heat collecting portion 11. Since the heat-shielding cover 10 has a large-diameter heat-shielding cylindrical portion 12 with respect to the holder 1, the lower surface of the contact heat-collecting portion 11 is widely secured and the thermistor 16 is provided.
Mounting work is easy, and since the heat-shielding cylindrical portion 12 is formed integrally with the contact heat collecting portion 11, if the contact heat collecting portion 11 is fixed to the upper end of the holder 1, it is inevitable. In addition, since the relative positional relationship between the heat shield cylindrical portion 12 and the holder 1 is accurately fixed, an effect that does not affect the measured temperature of the thermistor 16 is obtained.

[Brief description of the drawings]

FIG. 1 is an overall schematic diagram showing the relationship between a cooking appliance temperature detecting device, a gas stove, and a cooking container according to the present invention.

FIG. 2 is a partially cutaway cross-sectional view of the cooker temperature detecting device.

FIG. 3 is a plan view of a heat shield cover.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Holder, 2 ... Upper opening, 3 ... Lower opening, 4 ...
Mounting flange, 5 step, 6 hollow shaft, 7 annular washer, 8 keyway, 9 ridge, 10 heat shield cover, 11
... contact heat collecting part, 12 ... heat shielding cylindrical part, 13 ... gap, 14 ...
Vent hole, 15: coil spring, 16: thermistor, 17
... Thermistor mounting bracket, 18 ... Grease, 19 ... Cord, 20 ... Gas stove, 21 ... Cooking container, 22 ... Flame, 2
3 ... inclined connection surface.

Claims (1)

[Claims] 1. A cooking container in which a vertically cylindrical holder 1 is vertically movably mounted on an upper outer periphery of a vertically long hollow shaft 6 supported by a gas stove 20, and an upper end of the holder 1 is placed on the gas stove 20. 21, a thermistor 16 for temperature measurement is attached to the lower surface of the contact heat collecting unit 11, and the outer periphery of the holder 1 is placed with a gap 13 therebetween to form a heat shielding cylindrical portion. 12, the contact heat collecting portion 11 has a horizontal circular shape, and forms an inclined connecting surface 23 extending obliquely downward on the outer peripheral side of the contact heat collecting portion 11; An annular upper edge of the heat shield cylindrical portion 12 is connected to an outer peripheral edge of the heat shield cylindrical portion 12, so that the contact heat collecting portion 11, the heat shield cylindrical portion 12, and the inclined connection surface 23 are connected.
Constitutes a heat shield cover 10 integrally formed of a thin metal plate separate from the holder 1, wherein the upper end of the holder 1 is welded to the lower surface of the contact heat collecting section 11 to form the holder 1. A temperature detecting device for cookware with a heat shield cover, wherein the upper opening 2 of the heater is closed by the contact heat collector 11.