JPH08256909A - Temperature detector for cooking heater - Google Patents

Abstract

PURPOSE: To provide a temperature detector capable of preventing a thermosensitive cylinder from turning for a supporting cylinder without imparing the slide of the thermosensitive cylinder of the temperature detector for a cooking heater in the vertical direction along the supporting cylinder by a material flowing out of a container to be heated. CONSTITUTION: Such composition is employed that the thermosensitive cylinder 1 is prevented from turning for the supporting cylinder 4 via a coil spring 5 by engaging the upper terminal of the coil spring 5 which presses the thermosensitive cylinder 1 upward on the supporting cylinder 4 to the thermosensitive cylinder 1, and the lower terminal of the coil spring 5 to the supporting cylinder 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature detecting device of a heating device for cooking, that is, in order to prevent an object to be cooked in a container to be heated from overheating, the bottom surface of the container to be heated is heated to a predetermined temperature. Regarding the temperature detection device that stops heating when rising, more specifically, a thermosensitive cylinder that has a built-in thermosensitive element and contacts the bottom surface of the bottom of the heated container supports the thermosensitive cylinder while handling the heated container. And a means for preventing the lead wire of the heat sensitive element from being twisted and cut, or the lead wire falling off from the heat sensitive element.

[0002]

2. Description of the Related Art FIG. 6 shows a general structure of a temperature detecting device for a heating device for cooking. Reference numeral 1 is a heat-sensitive cylinder having a cylindrical shape with a lid, which is in close contact with the lower surface of a lid plate 2 of the heat-sensitive cylinder 1. The element 3 is attached, and the upper surface of the lid plate 2 comes into contact with a not-shown container to be heated, for example, the lower surface of the bottom of the pot to detect the temperature of the part. The heat sensitive cylinder 1 has an upper large diameter portion 1-1 and a lower small diameter portion 1-2.
And a stepped portion is formed between the and. 3-1 is a heat sensitive element 3
2 and 3-2 are holders of the heat sensitive element 3. Reference numeral 4 denotes a support cylinder fixed to a casing 6 of the heating device in the vertical direction at the center of the heating device for cooking (not shown).
1 and a lower small-diameter portion 4-2 to form a stepped portion, and the heat-sensitive cylinder 1 is guided along the outer peripheral surface of the upper large-diameter portion 4-1 so as to be slidable in the vertical direction. The contact between the upper surface of the stepped portion of the tube 1 and the lower surface of the stepped portion of the support tube 4 prevents the heat-sensitive tube 1 from dropping upward from the support tube 4. Reference numeral 5 denotes a coil spring, which is provided on the lower surface of the cover plate 2 of the heat-sensitive cylinder 1 and the support cylinder 4
It is arranged between the upper surface of the stepped portion and the heat-sensitive cylinder 1 is urged upward.

Thus, in the temperature detecting device having the above structure, when the heat-sensitive cylinder 1 continuously rotates around the support cylinder 4 in the same direction while handling the container to be heated, the lead wire 3-1 is twisted. Therefore, in the temperature detecting device of the heating device for cooking, the lead wire 3-1 may be disconnected from the heat sensitive element 3 or the lead wire 3-1 may be disconnected from the heat sensitive element 3 between the heat sensitive cylinder 1 and the support cylinder 4. , Heat sensitive tube 1
Means are formed to prevent rotation of the.

7 and 8 are shown in Japanese Patent Laid-Open No. 60-235030.
FIG. 3 is a perspective view showing a heat-sensitive cylinder 1 and a support cylinder 4 in a temperature sensor proposed by No. In FIG. 7, reference numeral 1 is a heat-sensitive cylinder, 2 is a cover plate of the heat-sensitive cylinder 1, and the heat-sensitive element 3 (not shown) is attached to the lower surface of the cover plate 2. 1-
Reference numeral 3 denotes a stopper formed by bending the heat-sensitive cylinder 1 at the peripheral edge of the bottom of the heat-sensitive cylinder 1, the function of which will be described later.

In FIG. 8, reference numeral 4 is a support cylinder, 4-1 is an upper large diameter portion, 4-2 is a lower small diameter portion, and a step is provided between the upper large diameter portion 4-1 and the lower small diameter portion 4-2. Part 4-4 is formed. A guide plate 4-3 is attached to the outer circumference of the lower small-diameter portion 4-2 in the shape of a fin in the radial direction along the entire length of the lower small-diameter portion 4-2. The stopper 1-3 of the heat-sensitive cylinder 1 contacts the stepped portion 4-4 of the support cylinder 4 so that the heat-sensitive cylinder 1 is supported by the support cylinder 4.
From above, the stopper 1-3 abuts against the guide plate 4-3, and the heat-sensitive cylinder 1 is prevented from rotating around the support cylinder 4.

FIG. 9 and FIG. 10 are disclosed in Japanese Unexamined Patent Publication No. 5-123249.
FIG. 9 is a cross-sectional view showing a rotation preventing means of the heat-sensitive cylinder 1 in the cooking thermistor mounting device proposed in FIG. 9, FIG. 9 is a vertical cross-sectional view, and FIG. Is. In FIGS. 9 and 10, the thermosensitive element 3 (not shown) is attached inside the thermosensitive cylinder 1 and on the lower surface of the cover plate 2 of the thermosensitive cylinder 1. The heat-sensitive cylinder 1 has an upper large diameter portion 1-1 and a lower small diameter portion 1
-2, the support cylinder 4 includes an upper large diameter portion 4-1 and a lower small diameter portion 4-2, and the heat-sensitive cylinder 1 uses the outer peripheral surface of the upper large diameter portion 4-1 of the support cylinder 4 as a guide surface. Similar to the configuration of FIG. 6, the heat-sensitive cylinder 1 is urged upward by the coil spring 5 by sliding in the vertical direction, but in the configuration of FIG. 4-1 is the lower small diameter portion 4
-2 is fixed to the upper flange part by crimping. On the side wall of the upper large-diameter portion 1-1 of the heat-sensitive cylinder 1, there is provided an inward vertical protrusion 1-4, and a recess 4-5 slidably engaged with the protrusion 1-4. Is formed on the side wall of the upper large-diameter portion 4-1 of the support cylinder 4 to prevent the heat-sensitive cylinder 1 from rotating with respect to the support cylinder 4.

Thus, the Japanese Patent Laid-Open No. 60-shown in FIGS.
In the configuration proposed by No. 235030, the guide plate 4-3 of the support cylinder 4
On the surface of, for example, oil or boiled juice that overflows from the container to be heated easily adheres, and the adhered matter is heated into a tar-like shape,
Alternatively, it may be carbonized and caught on the stopper 1-3 of the heat-sensitive cylinder 1 to prevent the heat-sensitive cylinder 1 from sliding in the vertical direction, and the surface shape of the support cylinder 4 is complicated. There is.

Further, Japanese Patent Application Laid-Open No. 5-123 shown in FIGS. 9 and 10.
In the configuration proposed in No. 249, the convex ridges 1-4 are formed on the side walls of the upper large diameter portion 1-1 of the heat sensitive cylinder 1, and the concave ridges 4-5 are formed on the side walls of the upper large diameter portion 4-1 of the support cylinder 4 by press molding. However, not only the cost of the pressing step is high, but also the press molding of the part requires high precision, which causes a large increase in cost.

[0009]

Therefore, according to the present invention, the means for preventing the heat-sensitive cylinder 1 from rotating with respect to the support cylinder 4 is provided directly between the heat-sensitive cylinder 1 and the support cylinder 4 which slide relative to each other. It is an object of the present invention to obtain a rotation preventing means that does not require the engaging means of.

[0010]

A temperature detecting device for a heating device for cooking which is in contact with a bottom surface of a bottom part of a container to be heated and detects the temperature of the part, wherein the center part of the heating device is arranged vertically.
A support cylinder fixed to the housing of the heating device, the upper part of which has a large diameter and the lower part of which has a small diameter in a stepped manner; and the inner peripheral surface of which is above and below the outer peripheral surface of the upper large diameter part of the support cylinder. An upper large-diameter portion slidably guided in a direction, and a lower small-diameter portion having a smaller diameter than the large-diameter portion and through which the lower small-diameter portion of the support cylinder is inserted.
A cylindrical heat-sensitive cylinder with a lid, in which a stepped portion is formed to prevent the heat-sensitive cylinder from falling off from the support cylinder; a heat-sensitive element closely fixed to the lower surface of the cover plate of the heat-sensitive cylinder; And a coil spring arranged between the lower surface of the plate and the upper surface of the stepped portion of the support cylinder to urge the heat-sensitive cylinder upward, the temperature sensing device comprising: a diameter of a lower small-diameter portion of the heat-sensitive cylinder; However, the inner peripheral surface of the lower small-diameter portion of the heat-sensitive cylinder and the outer peripheral surface of the lower small-diameter portion of the support cylinder are substantially intermediate between the diameter of the upper large-diameter portion and the diameter of the lower small-diameter portion of the support cylinder. A means for locking the upper end of the coil spring to the heat-sensitive cylinder and a means for locking the lower end of the coil spring to the stepped portion of the support cylinder, having a diameter difference that does not contact each other; Even if something overflowing from the heated container adheres to the lower small diameter part of the support tube, the heat-sensitive tube slides vertically. Without being disturbed, even when rotated around the thermal sleeve once the support cylinder, and configured to restore the elasticity of the coil spring.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1, FIG. 2 and FIG. 3 are sectional views showing a first embodiment of a temperature detecting device of the present invention of a heating device for cooking.
Is a sectional view taken along the line AA of FIG. 1, and FIG. 3 will be described later.
Reference numeral 1 is a heat-sensitive tube having a cylindrical shape with a lid, which is composed of an upper large diameter portion 1-1 and a lower small diameter portion 1-2, 2 is a cover plate, and 3 is a lead wire 3-1.
3-2 is a holder of the heat-sensitive element 3. Reference numeral 4 is a support tube which is fixed to a casing of a cooking heating device (not shown) and which guides the heat-sensitive tube 1 slidably in the vertical direction, and includes an upper large diameter portion 4-1 and a lower small diameter portion 4-2. The reference numeral 5 denotes a coil spring for urging the heat-sensitive cylinder 1 upward, which is exactly the same as the general structure shown in FIG. 1 and 2, reference numeral 7 is an annular metal plate attached to the lower surface of the cover plate 2, and the upper end portion of the coil spring 5 is fitted to the inner peripheral surface thereof. A plurality of cutouts 7-1 are provided outward on the inner peripheral surface, and the cutouts 7-1 are provided.
The coil spring 5 accommodates a portion 5-1 of the upper end of the coil spring 5 which is bent outward, and is engaged with the cover plate 2, and thus the heat sensitive cylinder 1, in such a direction that the upper end of the coil spring 5 prevents mutual rotation. Be stopped.

A through hole 4-6 is formed in a stepped portion between the upper large diameter portion 4-1 and the lower small diameter portion 4-2 of the support cylinder 4, and the coil spring 5 is inserted in the through hole 4-6. The bent portion 5-2 is inserted below the end of the lower end of the coil spring 5, and the lower end of the coil spring 5 is locked to the support cylinder 4. FIG. 3 is a view showing a process of inserting the downwardly bent portion 5-2 into the through hole 4-6 and an action of preventing the portion 5-2 from falling off after the insertion. The tip of the downwardly bent portion 5-2 is curved in a substantially U-shape, and while passing through the through hole 4-6, as shown in the middle diagram of FIG. 3 and is elastically restored after passing, and the state shown in the right end of FIG. 3 is obtained, and the downwardly bent portion 5-2 of the coil spring 5 is prevented from falling out of the through hole 4-6. It

4 and 5 show a second embodiment of the present invention, and FIG. 5 is a sectional view taken along the line B--B of FIG. In FIGS. 4 and 5, reference numeral 8 is a positioning plate of the coil spring 5 which is fixed to the lower surface of the lid plate 2 along the radial direction of the lid plate 2 and accommodates a heat-sensitive element in the central portion thereof. A tubular portion 8-1 through which the lead wire 3-1 of the element passes is formed.
5-3 is a U-shaped portion of the upper end of the coil spring 5, which is a U-shaped portion 5-3
However, the coil spring 5 is engaged with the side end portion of the upper end of the positioning plate 8 so that the upper end of the coil spring 5 is locked in the rotational direction with respect to the heat-sensitive cylinder 1. The other reference numerals in FIGS. 4 and 5 indicate the same parts as those in each of FIGS. 1 to 3, and the configuration in which the lower end of the coil spring 5 is locked to the support cylinder 4 is shown in FIG. The configuration is exactly the same as that of the first embodiment shown in FIG. In both the first and second embodiments, the diameter of the lower small-diameter portion of the heat-sensitive cylinder 1 is the same as the diameter of the upper large-diameter portion 4-1 of the support cylinder 4 and the lower small-diameter portion 4.
-2, which is substantially in the middle of the diameter of -2, the inner peripheral surface of the lower small diameter portion 1-2 of the heat-sensitive cylinder 1 and the lower small diameter portion 4-2 of the support cylinder 4.
Since it is sufficiently distant from the outer periphery of the heat sensitive cylinder 1, the sliding of the heat sensitive cylinder 1 is not hindered by the adhesion of the overflowed container.

[0014]

[Operations and Effects] Like the conventional temperature detecting device having the rotation stopper between the heat-sensitive cylinder 1 and the support cylinder 4, the heat-sensitive cylinder 1 and the support are supported at the portion where the overflowed substance adheres to the heated container. Tube 4
Since there is no contacting part with the heat-sensitive cylinder 1, the vertical movement of the heat-sensitive cylinder 1 on the support cylinder 4 is not hindered by the adhesion of the overflowed container, and the heat-sensitive cylinder 1 and the support cylinder 4 have a structure. It is advantageous in terms of cost because it is not necessary to perform complicated or precision machining, and the rotation prevention is performed via the coil spring 5, and the heat-sensitive cylinder 1 is not affected by the coil spring while handling the heated container. Even if the elastic member 5 is elastically deformed and once rotated around the support cylinder 4, it is restored by the elastic force of the coil spring 5, so that the heat-sensitive cylinder 1 continues to rotate in the same direction and the lead of the heat-sensitive element is read. There is no risk of the wire 3-1 being twisted and cut, or the lead wire 3-1 falling off from the heat sensitive element.

The means for engaging the upper end of the coil spring 5 with the heat-sensitive cylinder 1 and the engaging the lower end of the coil spring 5 with the support cylinder 4 is not limited to the configurations shown in the first and second embodiments. However, various configurations other than this are conceivable. Since the purpose of the present invention is to prevent rotation of the heat-sensitive cylinder 1 with respect to the support cylinder 4 via the coil spring 5, the upper end of the coil spring 5 and the heat-sensitive cylinder 1 are locked with each other. The locking structure between the lower end and the support cylinder 4 is not limited to the structures of the first and second embodiments.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is an explanatory diagram of a lower end of the coil spring according to the first embodiment.

FIG. 4 is a longitudinal sectional view showing a second embodiment of the present invention.

5 is a cross-sectional view taken along the line BB of FIG.

FIG. 6 is a diagram showing a general configuration of a temperature detection device of a heating device for cooking.

FIG. 7 is a perspective view showing a conventional example of a heat-sensitive cylinder provided with a rotation prevention unit.

8 is a perspective view showing the configuration of a support cylinder that guides the heat-sensitive cylinder of FIG.

FIG. 9 is a vertical cross-sectional view showing another conventional example of the temperature detection device of the heating device for cooking.

10 is a cross-sectional view taken along the line CC of FIG.

[Explanation of symbols]

1 Heat-sensitive cylinder 1-1 Large upper part of heat-sensitive cylinder 1-2 Lower small-diameter part of heat-sensitive cylinder 2 Cover plate of heat-sensitive cylinder 3 Heat-sensitive element 3-1 Lead wire 3-2 Holder of heat-sensitive element 4 Support cylinder 4- 1 Upper Large Diameter Part 4-2 of Support Cylinder Lower Small Diameter Part of Support Cylinder 4-6 Through Hole 5 Coil Spring 5-1 Part of Upper End of Coil Spring Bent to Outside of Terminal 5-2 Lower End of Coil Spring Part bent to the bottom of the terminal 5-3 Part formed at the upper end of the coil spring in the U-shape of the end 7 Annular metal plate 7-1 Notch provided on the inner peripheral surface 8 Coil spring positioning plate 8-1 Cylindrical part that houses the heat sensitive element and through which the lead wire passes

Claims (1)

[Claims] 1. A temperature detecting device for a heating device for cooking, which is in contact with a lower surface of a bottom part of a container to be heated and detects the temperature of the part, wherein the casing of the heating device is vertically arranged at a central portion of the heating device. A support cylinder (4) fixed to the body (6), the upper part of which has a large diameter and the lower part of which has a small diameter in a stepped manner; 4-1) Upper large diameter part (1-1) which is slidably guided in the outer peripheral surface of 4-1).
And the support cylinder (4) having a diameter smaller than that of the large diameter portion (1-1).
Lower small diameter portion (4-2) of the lower small diameter portion (1-
2) and a heat-sensitive cylinder (1) having a cylindrical shape with a lid and a stepped portion for preventing the heat-sensitive cylinder (1) from falling off from the support cylinder (4); A heat-sensitive element (3) closely fixed to the lower surface of the plate (2); disposed between the lower surface of the lid plate (2) of the heat-sensitive cylinder (1) and the upper surface of the stepped portion of the support cylinder (4). A coil spring (5) for urging the heat-sensitive cylinder (1) upward so that the upper surface of the lid plate (2) of the heat-sensitive cylinder (1) is brought into contact with the bottom lower surface of the heated container.
And a temperature detecting device comprising;
The diameter of the lower small diameter portion (1-2) of the support cylinder (4) is approximately halfway between the diameter of the upper large diameter portion (4-1) and the diameter of the lower small diameter portion (4-2) of the support cylinder (4). Then, the lower small diameter portion (1
-2) inner peripheral surface and the lower small diameter portion (4-2) of the support cylinder (4).
Means for engaging the upper end of the coil spring (5) with the heat-sensitive cylinder (1) and the lower end of the coil spring (5) for supporting the outer peripheral surface of the coil spring (5). A means for engaging with the stepped portion of the cylinder (4) is provided, and what overflows from the container to be heated is the lower small diameter part (4-) of the support cylinder (4).
Even if the heat-sensitive cylinder (1) adheres to the support tube (4), the vertical movement of the heat-sensitive cylinder (1) is not hindered.
A temperature detecting device for a heating device for cooking, which is restored by the elastic force of a coil spring (5) even when it is rotated around.