JPH1137852A - Bottom temperature detector for pan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate such a possibility that the lower end of a heat collecting member is caught even if the gap between the lower end of the heat collecting member and a pan bottom temperature sensor is narrow by providing an inclining part on the entire circumference of at least one of the inner fringe part at the upper end of a heat shielding ring or the lower end of the heat collecting member. SOLUTION: The supporting part 21 of the pan bottom temperature sensor 2 is engaged, at the forward end thereof, with a tubular sensor body 22 movably up and down and a tubular bottomed heat collecting member 23 abutting against the bottom of a pan is applied to the upper part thereof. A coil spring 24 is interposed, while being compressed, between the heat collecting member 23 and the supporting part 21 in order to urge the sensor body 22 and the heat collecting member 23 upward. The lower end 23a of the heat collecting member 23 is superposed on the outer circumferential surface of the sensor body 22 and inflated outward by one stage. In a state where a pan is mounted and the sensor body 22 and the heat collecting member 23 are pushed downward by the bottom of the pan, the lower end 23a is caught by the upper end 1a of a heat shielding ring 1 because it is located lower than the upper end 1a. The inner circumferential fringe of the upper end 1a is beveled in order to eliminate the possibility of being caught.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pan bottom temperature detecting device comprising a pan bottom temperature detecting sensor for detecting a pan bottom temperature, and a heat shield ring for shielding the pan bottom temperature detecting sensor from a heat source.

[0002]

2. Description of the Related Art Conventionally, as this type, for example, Japanese Patent Application Laid-Open No. 62-102034 discloses an external flame burner which is annular and has a flame hole formed toward the outside or a flame hole formed toward the inside. A pan bottom temperature detection sensor disposed at the center of the formed internal flame type burner, and the pan bottom temperature detection sensor is covered over the entire circumference from the side with a gap, and heat from the burner as a heat source is removed. 2. Description of the Related Art A tubular heat shield ring that blocks heat is known.

A pan bottom temperature detecting sensor is disclosed in
As described in JP-A-123248, a cylindrical heat collecting member having a bottom is in contact with the bottom of a pot on the upper part of a cylindrical sensor body, and the sensor body is vertically movable while urging the sensor body upward. Holding. Therefore, the lower end of the heat collecting member overlaps with the outer peripheral surface of the sensor body, and the upper part protrudes from the lower end by one step outside the outer peripheral surface of the sensor body.

[0004]

A gap must be provided between the above-mentioned pan bottom temperature detection sensor and the heat shield ring to allow air to flow from below to cool the pan bottom temperature detection sensor. On the other hand, the diameter of the heat shield ring may be reduced,
In that case, the gap between the pan bottom temperature detection sensor and the heat shield ring becomes narrow. Especially in the case of the internal flame type burner, the flame is formed toward the heat shield ring, so it is necessary to keep the heat shield ring as far away from the flame hole as possible so as not to contact the flame, so that the heat shield ring is possible It is desirable to make it as thin as possible.

However, when the heat shield ring is made thinner to narrow the gap between the pan bottom temperature detection sensor and the heat shield ring, the pan bottom temperature detection sensor is attached, for example, at an angle, or bent by an external force. In such a case, the lower end of the heat collecting member is caught on the inner peripheral portion of the upper end of the heat shield ring while the pan is placed and the sensor body is pushed down through the heat collecting member of the pan bottom temperature detection sensor, and the burner body is further lowered. There is a possibility that a problem of disappearing may occur.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a pot bottom temperature detecting device in which the lower end of a heat collecting member is not likely to be caught even when a gap between the pot bottom temperature detecting sensor is narrowed. I do.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention firstly places a bottomed tubular heat collecting member in contact with the bottom of a pan on the upper part of a tubular sensor body, and And a pot bottom temperature detection sensor that is held movably in the vertical direction while urging upward, and covers the pot bottom temperature detection sensor from the side all around with a gap to remove heat from burners and other heat sources. In a pan bottom temperature detecting device comprising a tubular heat insulating ring for heat shielding, the pan bottom temperature detecting sensor is configured such that a lower end of a heat collecting member overlapping an outer peripheral surface of the sensor body has a lower end of the heat shielding ring at a rising end position of the sensor body. The heat collecting member is located above the upper end, and the lower end of the heat collecting member is positioned below the upper end of the heat insulating ring when the pan is placed. At least one of The lower end of the heat-collecting member is characterized by providing an inclined portion over the entire periphery so as not to catch on the upper end of the heat shield ring.

Second, a pot bottom having a bottomed tubular heat collecting member abutting on the pot bottom is placed on the upper part of the tubular sensor body and movably held in the vertical direction while urging the sensor body upward. A pot bottom temperature detecting device comprising: a temperature detecting sensor; and a cylindrical heat insulating ring that covers the pan bottom temperature detecting sensor over the entire circumference from the side with a gap therebetween and blocks heat from a burner or other heat source. In the above pan bottom temperature detection sensor,
The lower end of the heat collecting member that overlaps the outer peripheral surface of the sensor body is located above the upper end of the heat shield ring at the rising end position of the sensor body, and the lower end of the heat collecting member is placed on the pan when the pan is placed. It is formed so as to be located below the upper end, and the upper part of the outer peripheral surface of the sensor body, where the heat collecting member overlaps, is formed to be one step thinner than the other part of the outer peripheral surface of the sensor body. .

Thirdly, a pot bottom having a bottomed tubular heat collecting member abutting on the pot bottom is placed on the upper part of the tubular sensor body and movably held in the vertical direction while urging the sensor body upward. A pot bottom temperature detecting device comprising: a temperature detecting sensor; and a cylindrical heat insulating ring that covers the pan bottom temperature detecting sensor over the entire circumference from the side with a gap therebetween and blocks heat from a burner or other heat source. Wherein the lower end of the heat collecting member overlapping the outer peripheral surface of the sensor body is formed to be lower than the upper end of the heat shield ring at the rising end position of the sensor body.

When the heat collecting member is put on the sensor body, the lower end of the heat collecting member overlaps the outer peripheral surface of the sensor body, and becomes a stepped shape. If the inclined portion is provided on at least one of the upper end inner edge portion of the heat shield ring and the lower end of the heat collecting member, even if the pan bottom temperature detection sensor is attached with an inclination, etc. The other does not slip and the stepped portion does not catch on the inner peripheral portion of the upper end of the heat shield ring. Incidentally, the inclined portion may be formed by beveling by cutting off obliquely in a straight line,
Alternatively, it may be formed with a radius so that the inclination angle changes continuously.

When the inclined portion is provided in this way, the above-mentioned catching can be prevented particularly when the heat-insulating ring is thinned because it is arranged at the central portion of the internal flame type burner.

Further, when the upper portion of the outer peripheral surface of the sensor body and the portion where the heat collecting member overlaps is formed to be one step thinner than the other portion of the outer peripheral surface of the sensor body, the lower end of the heat collecting member is formed on the outer peripheral surface of the sensor body. It is hidden by other parts and hardly gets caught on the upper end of the heat shield ring.

By the way, the stepped portion formed by the lower end of the heat collecting member is located above the upper end of the heat shield ring at the rising end position of the sensor body, and when the pan is placed on the heat collecting member, Since the lower end is formed so as to be lower than the upper end of the heat shield ring, there is a problem that the lower end of the heat collecting member is caught by the upper end of the heat shield ring. Therefore, if the lower end of the heat collecting member is formed so as to be lower than the upper end of the heat shield ring at the rising end position of the sensor body, the lower end of the heat collecting member will not be higher than the upper end of the heat shield ring, and heat collection The lower end of the member does not catch on the upper end of the heat shield ring.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, reference numeral 1 denotes a cylindrical heat-insulating ring formed of a metal such as so-called stainless steel or brass. PB
Is attached so as to cover a pan bottom temperature detection sensor (hereinafter, referred to as a temperature sensor) 2 for detecting the temperature of the pan bottom PB from the side to the entire circumference with a gap. The pan bottom temperature detecting device of the present invention includes a heat shield ring 1 and a temperature sensor 2. The heat shield ring 1 has a flame hole 3 facing inward.
1 is disposed so as to be located at the center of the annular internal flame type burner 3 formed. The heat shield ring 1 is pressed and held by a holding plate 41 against a bracket 4 fixed relatively to the internal flame type burner 3. Further, the temperature sensor 2 is held by the cylindrical support portion 21 being pressed against the bracket 4 by the pressing plate 42.

Referring to FIG. 2, support portion 2 of temperature sensor 2
A cylindrical sensor body 22 is vertically movably engaged with one end of the sensor body 1, and a bottomed cylindrical heat collecting member 23 that is in contact with the pot bottom PB is covered on an upper portion of the sensor body 22. A thermistor TH, which is a temperature sensing element, is tightly fixed inside the heat collecting member 23. When the heat collecting member 23 is put on the sensor body 22, the coil spring 24 is contracted between the heat collecting member 23 and the support portion 21. Thereby, the sensor body 2
2 and the heat collecting member 23 are urged upward by the urging force of the coil spring 24. Further, the lower end 23 a of the heat collecting member 23 overlaps the outer peripheral surface of the sensor body 22 and swells one step outward from the outer peripheral surface of the sensor body 22. In the present embodiment, when the sensor body 22 and the heat collecting member 23 are at the rising end position by not placing the pot P on the goto 5, the heat collecting member 23 is not placed.
Is located above the upper end 1 a of the heat shield ring 1. Then, in a state where the pot P is placed on the gode 5 and the sensor body 22 and the heat collecting member 23 are pushed down by the pot bottom PB, as shown in FIG.
Is located below the upper end 1 a of the heat shield ring 1. By the way, when the support portion 21 is held by the bracket 4 in an inclined manner, for example, the sensor body 22 and the heat collecting member 23 are inclined as shown by a two-dot chain line. Since the lower end 23a of the heat collecting member 23 is caught by the upper end 1a of the heat shield ring 1 in the inclined state, the chamfered portion 11 is formed as an inclined portion over the entire inner peripheral edge of the upper end 1a, and the lower end of the heat collecting member 23 is formed. 23a was not caught.

Incidentally, as the inclined portion, in addition to the chamfered portion 11 having a constant inclination angle, as shown in FIG. 4, a rounded portion 12 whose inclination angle continuously changes may be used. In addition, for example, a chamfered inclined portion 23 is
b may be provided. In addition, both the upper end 1a of the heat shield ring 1 and the lower end 23 of the heat collecting member 23 may be provided with inclined portions.
Alternatively, an inclined portion may be provided on only one of them.

Alternatively, as shown in FIG. 5, an upper portion of the sensor body 22 where the heat collecting member 23 overlaps may be formed one step narrower to provide a small diameter portion 22S. The small diameter portion 2
When 2S is provided, the heat collecting member 23 does not protrude outward, and the lower end 23a of the heat collecting member 23 is hidden by the sensor body 22, so that the heat collecting member 23 is less likely to be caught on the upper end of the heat shield ring 1.

Referring to FIG. 6, lower end 23a of heat collecting member 23 is positioned below upper end 1a of heat shield ring 1 with sensor body 22 and heat collecting member 23 at the rising end position. If the heat collecting member 23 is formed, the lower end 23a of the heat collecting member 23 does not cross the position of the upper end 1a of the heat collecting member 1, and even if the lower end 23a or the upper end 1a is not provided with an inclined portion,
The lower end 23a does not catch on the upper end 1a.

[0019]

As is apparent from the above description, according to the present invention, even when the pan bottom temperature detecting sensor is attached at an angle, the heat collecting member covered on the sensor body of the pan bottom temperature detecting sensor. Does not catch on the upper end of the heat shield ring.

[Brief description of the drawings]

FIG. 1 is a diagram showing a state to which the present invention is applied;

FIG. 2 is a cross-sectional view showing a state where a sensor body and a heat collecting member are at a rising end position.

FIG. 3 is a cross-sectional view showing a state where a sensor body and a heat collecting member are pushed down.

FIG. 4 is a diagram showing a modification of the first embodiment;

FIG. 5 is a cross-sectional view illustrating a configuration of a second embodiment.

FIG. 6 is a cross-sectional view illustrating a configuration of a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat insulation ring 2 Pot bottom temperature detection sensor 11 Chamfering part (inclined part) 12 Round part (inclined part) 22 Sensor body 23 Heat collecting member

Claims (4)

[Claims] 1. A pot bottom temperature detecting apparatus in which a bottomed tubular heat collecting member abutting on a pot bottom is placed on an upper part of a tubular sensor body, and the sensor body is urged upward and movably held in a vertical direction. In a pan bottom temperature detection device comprising a sensor and a pan-shaped heat shield ring that covers the pan bottom temperature detection sensor over the entire circumference from the side with a gap, and blocks heat from burners and other heat sources, In the pot bottom temperature detection sensor, the lower end of the heat collecting member overlapping the outer peripheral surface of the sensor body is located above the upper end of the heat shield ring at the rising end position of the sensor body, and the heat collecting member is placed in a state where the pan is placed. Is formed so that the lower end of the heat shield ring is located below the upper end of the heat shield ring. Do not catch on the top edge A pan bottom temperature detecting device characterized by providing an inclined portion all around. 2. The heat source is an annular internal flame type burner having a flame hole formed inward, and a heat shield ring is disposed at a central portion of the internal flame type burner. The pan bottom temperature detecting device according to 1. 3. A pan bottom temperature detecting means for covering a top of a cylindrical sensor body with a bottomed cylindrical heat collecting member abutting on the pan bottom, and for urging the sensor body upward and movably holding the pan bottom temperature. In a pan bottom temperature detection device comprising a sensor and a pan-shaped heat shield ring that covers the pan bottom temperature detection sensor over the entire circumference from the side with a gap, and blocks heat from burners and other heat sources, In the pot bottom temperature detection sensor, the lower end of the heat collecting member overlapping the outer peripheral surface of the sensor body is located above the upper end of the heat shield ring at the rising end position of the sensor body, and the heat collecting member is placed in a state where the pan is placed. Is formed so that the lower end thereof is located below the upper end of the heat shield ring, and the upper portion of the outer peripheral surface of the sensor body where the heat collecting member overlaps is made one step thinner than the other portion of the outer peripheral surface of the sensor body. Characterized by molding Pot bottom temperature detection device. 4. A pot bottom temperature detecting apparatus, wherein a bottomed tubular heat collecting member abutting on the pot bottom is placed on the upper part of the tubular sensor body, and the sensor body is urged upward and movably held in a vertical direction. In a pan bottom temperature detection device comprising a sensor and a pan-shaped heat shield ring that covers the pan bottom temperature detection sensor over the entire circumference from the side with a gap, and blocks heat from burners and other heat sources, A pan bottom temperature detecting device, wherein a lower end of a heat collecting member overlapping an outer peripheral surface of a sensor body is formed to be lower than an upper end of a heat shield ring at a rising end position of the sensor body.