JP3625993B2 - Pan bottom temperature detector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pan bottom temperature detecting device including a pan bottom temperature detecting sensor that detects a pan bottom temperature and a heat shield ring that shields the pan bottom temperature detecting sensor from a heat source.
[0002]
[Prior art]
As this type of conventional one, for example, according to Japanese Patent Laid-Open No. 62-102034, an external flame type burner that is annular and has a flame hole formed outwardly, and an internal flame that has a flame hole formed inwardly. A pan bottom temperature detection sensor disposed in the center of the burner, and a cylindrical shape that covers the pan bottom temperature detection sensor from the side to the entire circumference with a gap and shields heat from the burner as a heat source. The heat shield ring is known.
[0003]
In addition, as described in Japanese Patent Laid-Open No. 5-123248, the pan bottom temperature detection sensor covers the top of the cylindrical sensor body with a bottomed cylindrical heat collecting member that comes into contact with the pan bottom, Is held so as to be movable in the vertical direction. Therefore, the lower end of the heat collecting member overlaps with the outer peripheral surface of the sensor body, and the upper part projects from the lower end to the outside of the first stage from the outer peripheral surface of the sensor body.
[0004]
[Problems to be solved by the invention]
A gap for cooling the pan bottom temperature detection sensor by flowing air from below must be provided between the pan bottom temperature detection sensor and the heat shield ring. On the other hand, the diameter of the heat shield ring may be reduced. In this case, the gap between the pan bottom temperature detection sensor and the heat shield ring is narrowed. In particular, in the case of an 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. It is desirable to make it as thin as possible.
[0005]
However, if the heat shield ring is narrowed and the gap between the pan bottom temperature sensor and the heat shield ring is narrowed, the pan bottom temperature sensor is attached at an angle, for example, or is bent by an external force. In the middle of placing the pan and pushing down the sensor body through the heat collecting member of the pan bottom temperature detection sensor, the lower end of the heat collecting member gets caught in the inner peripheral part of the upper end of the heat shield ring, and the burner body cannot be lowered any more. May occur.
[0006]
Then, this invention makes it a subject to provide the pan bottom temperature detection apparatus which does not have a possibility that the lower end of a heat collecting member may be caught even if the clearance gap between pan bottom temperature detection sensors becomes narrow in view of said problem.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention firstly covers the upper part of the cylindrical sensor body with a bottomed cylindrical heat collecting member that comes into contact with the bottom of the pan, and vertically urges the sensor body upward. A pan bottom temperature detection sensor that is movably held in a cylinder, and a cylindrical heat shield ring that covers the pan bottom temperature detection sensor from the side with a gap across the entire circumference and shields heat from the burner and other heat sources. In the pan bottom temperature detecting device, the pan bottom temperature detecting sensor is configured such that the lower end of the heat collecting member overlapping the outer peripheral surface of the sensor body is positioned above the upper end of the heat shield ring at the rising end position of the sensor body. In the state where the heat collecting member is placed, the lower end of the heat collecting member is formed to be positioned below the upper end of the heat shielding ring, and at least one of the inner edge of the upper end of the heat shielding ring and the lower end of the heat collecting member is collected. The bottom of the heat member is the heat shield ring Characterized by providing an inclined portion over the entire periphery so as not to catch on the upper end.
[0008]
Second, a pan-bottom temperature detection sensor that covers a top of a cylindrical sensor body with a bottomed cylindrical heat collecting member that comes into contact with the bottom of the pan, and holds the sensor body movably in the vertical direction while urging the sensor body upward. And a pan bottom temperature detection device comprising a cylindrical heat shield ring that covers the pan bottom temperature detection sensor from the side with a gap and covers the entire circumference from the side, and shields heat from the burner and other heat sources. In the pan bottom temperature detection sensor, the lower end of the heat collecting member that overlaps the outer peripheral surface of the sensor body is positioned above the upper end of the heat shield ring at the rising end position of the sensor body, and in the state where the pan is placed, The lower end is formed so as to be located below the upper end of the heat shield ring, and the upper part of the outer peripheral surface of the sensor body and the portion where the heat collecting member overlaps is formed one step thinner than the other part of the outer peripheral surface of the sensor body. Characterized by
[0009]
Third, a pan bottom temperature detection sensor that covers a top of a cylindrical sensor body with a bottomed cylindrical heat collecting member that comes into contact with the pan bottom and that is movably held in the vertical direction while urging the sensor body upward. And a pan bottom temperature detecting device that covers the pan bottom temperature detecting sensor from the side with a gap and covers the entire circumference from the side, and a cylindrical heat shield ring that shields heat from the burner and other heat sources. The lower end of the heat collecting member that overlaps the outer peripheral surface of the body 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.
[0010]
When the heat collecting member is put on the sensor body, the lower end of the heat collecting member is overlapped on the outer peripheral surface of the sensor body to form a step shape. If the inclined part is provided on at least one of the inner edge of the upper end of the heat shield ring and the lower end of the heat collecting member, the upper part of the inclined part provided on the inclined part is provided even when the pan bottom temperature detection sensor is attached with an inclination. The other part slips, and the stepped portion is not caught by the inner periphery of the upper end of the heat shield ring. Note that the inclined portion may be formed by chamfering and straightening obliquely, or by forming a rounded shape so that the inclination angle continuously changes.
[0011]
When the inclined portion is provided in this manner, the above-mentioned catch can be prevented particularly when the heat shield ring is thinned to be disposed at the center portion of the internal flame type burner.
[0012]
In addition, when the upper part of the outer peripheral surface of the sensor body and the portion where the heat collecting member overlaps are formed one step thinner than the other part of the outer peripheral surface of the sensor body, the lower end of the heat collecting member is the other part of the outer peripheral surface of the sensor body. It is difficult to get caught by the upper end of the heat shield ring.
[0013]
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 the lower end of the heat collecting member is blocked by the pan placed. Since it forms so that it may be located below the upper end of a heat ring, the problem that the lower end of a heat collecting member will be caught in the upper end of a heat shield ring arises. Therefore, if the lower end of the heat collection 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 collection member will not be higher than the upper end of the heat shield ring, and the heat collection member The lower end of the member does not catch on the upper end of the heat shield ring.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Referring to FIG. 1, reference numeral 1 denotes a cylindrical heat shield ring formed of a metal such as so-called stainless steel or brass, which comes into contact with the pan bottom PB of the pan P placed on the virtues 5, A pan bottom temperature detection sensor (hereinafter referred to as a temperature sensor) 2 for detecting the temperature of the PB is attached so as to cover the entire circumference from the side 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 is disposed so as to be positioned at the center of an annular internal flame burner 3 in which a flame hole 31 is formed inward. The heat shield ring 1 is held by being pressed by a pressing plate 41 against a bracket 4 fixed relatively to the internal flame type burner 3. Further, the temperature sensor 2 is held by pressing the cylindrical support portion 21 against the bracket 4 by a pressing plate 42.
[0015]
Referring to FIG. 2, a cylindrical sensor body 22 is engaged with the tip of the support portion 21 of the temperature sensor 2 so as to freely move up and down, and a bottomed cylinder that abuts the pan bottom PB at the top of the sensor body 22. A heat collecting member 23 is covered. Inside the heat collecting member 23, a thermistor TH, which is a temperature sensitive element, is tightly fixed. Further, 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. As a result, the sensor body 22 and the heat collecting member 23 are biased upward by the biasing force of the coil spring 24. Further, the lower end 23 a of the heat collecting member 23 overlaps with the outer peripheral surface of the sensor body 22 and swells outward one step from the outer peripheral surface of the sensor body 22. In the present embodiment, the lower end 23a of the heat collecting member 23 is the upper end 1a of the heat shield ring 1 in a state where the sensor body 22 and the heat collecting member 23 are at the ascending end position by not placing the pan P on the virtues 5. Located above. In the state where the pan P is placed on the five virtues 5 and the sensor body 22 and the heat collecting member 23 are pushed down by the pan bottom PB, the lower end 23a of the heat collecting member 23 is the heat shield ring 1 as shown in FIG. It is configured to be positioned below the upper end 1a. By the way, when the support portion 21 is held by the bracket 4 when tilted, for example, the sensor body 22 and the heat collecting member 23 are tilted as indicated 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 on the inner periphery of the upper end 1a, and the lower end of the heat collecting member 23 is formed. 23a was not caught.
[0016]
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 in which the inclination angle continuously changes may be used. Further, for example, a chamfered inclined portion 23 b may be provided at the lower end 23 a of the heat collecting member 23. In addition, you may make it provide an inclined part in both the upper end 1a of the heat shield ring 1 and the lower end 23 of the heat collecting member 23, or may provide an inclined part only in any one.
[0017]
Alternatively, as shown in FIG. 5, the portion of the upper portion of the sensor body 22 where the heat collecting member 23 overlaps may be formed into one thin step to provide the small diameter portion 22S. When the small diameter portion 22S 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 it is difficult to be caught by the upper end of the heat shield ring 1.
[0018]
With reference to FIG. 6, the heat collecting member 23 is positioned so that the lower end 23 a of the heat collecting member 23 is located below the upper end 1 a of the heat shield ring 1 in a state where the sensor body 22 and the heat collecting member 23 are in the rising end position. 23, 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 the lower end 23a is caught by the upper end 1a even if the lower end 23a or the upper end 1a is not provided with an inclined portion. There is nothing.
[0019]
【The invention's effect】
As is clear from the above description, according to the present invention, the bottom end of the heat collecting member that covers the sensor body of the pan bottom temperature detection sensor is shielded against heat even when the pan bottom temperature detection sensor is tilted and attached. It does not get caught on the upper end of the ring.
[Brief description of the drawings]
FIG. 1 is a view showing a state where the present invention is applied. FIG. 2 is a cross-sectional view showing a state in which a sensor body and a heat collecting member are at a rising end position. FIG. 4 is a diagram showing a modification of the first embodiment. FIG. 5 is a sectional view showing the configuration of the second embodiment. FIG. 6 is the configuration of the third embodiment. Sectional view showing [signs]
1 Heat shield ring 2 Pan bottom temperature detection sensor 11 Chamfered part (inclined part)
12 Earl part (inclined part)
22 Sensor body 23 Heat collecting member

Claims (4)

A pan bottom temperature detection sensor that covers a top of the cylindrical sensor body with a bottomed cylindrical heat collecting member that abuts the pan bottom, and urges the sensor body upward and is movable upward and downward, and the pan bottom A pan bottom temperature detecting device comprising a cylindrical heat shield ring that covers a temperature detection sensor over the entire circumference from the side with a gap and shields heat from a burner or other heat source. 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 shielding ring at the rising end position of the sensor body, and the lower end of the heat collecting member is shielded from heat when the pan is placed. It is formed so as to be positioned below the upper end of the ring, so that the lower end of the heat collecting member is not caught by the upper end of the heat insulating ring on at least one of the inner edge of the upper end of the heat insulating ring and the lower end of the heat collecting member All around Pan bottom temperature sensing device which is characterized in that a slope portion. 2. The pan bottom temperature according to claim 1, wherein the heat source is an annular inner flame burner having a flame hole formed inwardly, and the heat shield ring is disposed at a central portion of the inner flame burner. Detection device. A pan bottom temperature detection sensor that covers a top of the cylindrical sensor body with a bottomed cylindrical heat collecting member that abuts the pan bottom, and urges the sensor body upward and is movable upward and downward, and the pan bottom A pan bottom temperature detecting device comprising a cylindrical heat shield ring that covers a temperature detection sensor over the entire circumference from the side with a gap and shields heat from a burner or other heat source. 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 shielding ring at the rising end position of the sensor body, and the lower end of the heat collecting member is shielded from heat when the pan is placed. It is formed so as to be located below the upper end of the ring, and the upper part of the outer peripheral surface of the sensor body and the part where the heat collecting member overlaps is formed one step thinner than the other part of the outer peripheral surface of the sensor body. Pan bottom temperature Intelligence apparatus. A pan bottom temperature detection sensor that covers a top of the cylindrical sensor body with a bottomed cylindrical heat collecting member that abuts the pan bottom, and urges the sensor body upward and is movable upward and downward, and the pan bottom In the pan bottom temperature detection device, which covers the temperature detection sensor from the side with a gap and covers the entire circumference from the side and shields heat from the burner and other heat sources, the outer peripheral surface of the sensor body The pan bottom temperature detecting device, wherein the bottom end of the heat collecting member that overlaps with the top of the sensor body is formed to be lower than the top end of the heat shield ring at the rising end position of the sensor body.

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