JP2982378B2 - Temperature sensor for cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature sensor for sensing the temperature of an object to be heated in a cooking appliance used at home or the like.

[0002]

2. Description of the Related Art A conventional temperature sensor 1 for a cooking device of this kind.
Is shown in FIG. In FIG. 6, the temperature-sensitive body 2 is attached to a heat-sensitive plate 4 that comes into contact with the object 3 to be heated. The heat-sensitive plate 4 is a cylindrical movable member 6 provided at the tip of the sensor base 5.
Is attached by welding to the tip. And movable body 6
The movable body 6 is configured to move up and down with respect to the sensor base 5 with a spring 7 provided therein.

As shown in a second conventional example of FIG. 7, a temperature sensor 1 for a cooker is constructed so that a temperature-sensitive body 2 is wrapped by a support plate 8 wound in a cylindrical shape, and is brought into contact with an object 3 to be heated. The temperature of the object to be heated 3 is sensed (for example, Japanese Utility Model Application Laid-Open No. 59-104039).

As shown in a third conventional example in FIG. 8, a temperature sensor 1 for a cooker is provided on a cylindrical body 9 with an electric insulator 10.
And the temperature sensitive element 2 is buried therein, and is fixed to the object to be heated 3 by a mounting hole 9a formed integrally with the cylindrical body 9 (actual example 1-222109).
issue).

[0005] As shown in a fourth conventional example in Fig. 9, a temperature sensor 1 for a cooker is provided with a head 11 at a tip end of a cylindrical movable body 6, and an electric insulator 12 is attached to the head 11 by a low. Further, a temperature thermosensitive material (ceramic such as SiC) 2 is bonded to the insulator 12 with a glass melting material 13 or the like. Further, the temperature-sensitive body 2 is electrically insulated from the surrounding movable body 6 and the head 11, so that the temperature of the heated object 3 can be sensed when the head 11 contacts the heated object 3 ( For example, the actual opening 55-7
No. 4801).

[0006]

However, the configuration of the above conventional example has the following problems. That is, in the configuration of the first conventional example, the temperature-sensitive body 2 is provided on the heat-sensitive plate 4 in contact with the object 3 to be heated, and this heat-sensitive plate is welded to the tip of the movable body 6 provided at the tip of the sensor base 5, Further, a spring 7 is provided inside the movable body 6 so that the movable body 6 can move up and down with respect to the sensor base 5. However, in this configuration, when the object to be heated 3 is moved at the time of cooking, the movable body 6 is moved with respect to a small movement of the bottom surface of the heat-sensitive plate 4 of the object to be heated 3.
Has a problem that a gap is formed between the heat-sensitive plate 4 and the object to be heated 3 so that the temperature sensor 1 for the cooker cannot reliably catch the temperature of the object to be heated 3.

In the structure of the second conventional example, the temperature-sensitive member 2 is wrapped by the support plate 8 wound in a cylindrical shape.
When the temperature sensor 1 for the cooker senses the temperature by contacting the object 3 to be heated, the supporting plate 8 is formed by press molding or the like, and when the temperature heating element 2 is held, the temperature is between the supporting plate 8 and the temperature sensing element 2. There is a problem that a gap is generated and the heat conduction time from the object to be heated 3 to the temperature sensing element 2 is delayed, and a problem that precision is required for processing the support plate 8.

In the structure of the third conventional example, the tubular body 9 is filled with an electrical insulator 10 and the temperature-sensitive material 2 is embedded therein. There is a problem in that a gap is formed between the objects 10 and the heat conduction becomes thermal resistance, so that the time required for heat conduction from the object to be heated 3 to the temperature-sensitive body 2 is delayed.

In the structure of the fourth conventional example, a head 11 is provided at the tip of a cylindrical movable body 6, and an electrical insulator 12 is adhered to the head 11 by brazing or the like. The temperature-sensitive body 2 is bonded to the insulator 12 with a glass melting material 13 or the like, and at the same time, the temperature-sensitive body 2 is attached to the surrounding movable body 6 and the head 1.
1 was electrically insulated. The heating target 3 is heated to about 220 ° C. when the object 3 is cooked in a tempura or the like, and is heated to about 280 ° C. when a porcelain is made on an iron plate or the like. If the insulator 12 is made of ceramic or the like, sufficient heat resistance in temperature can be obtained. Stress was generated due to the difference in expansion coefficient, and the glass melt 13 having low mechanical strength was broken. In addition, since the temperature-sensitive body 2 is generally a semiconductor, the heat-resistant temperature is as low as about 250 ° C.,
When this cooker temperature sensor 1 is used, 25
There was a problem that cooking at 0 ° C. or higher was not possible.

[0010] The present invention is intended to solve the conventional problems relating, Tomo the cooker temperature sensor catches to ensure the movement of the bottom surface of the object to be heated, to reliably contact with the bottom surface of the object to be heated
, The adjustment sense dexterity temperature thermoresponsive and workability improvement of the sensor
It is an object of the present invention to provide a cooker temperature sensor.

A second object of the present invention is to provide a robust temperature sensor that protects the temperature sensor from external mechanical force applied to the temperature sensor of the temperature sensor.

It is a third object of the present invention to provide a temperature sensor for a cooker in which a temperature-sensitive body is always easily attached to a predetermined position with respect to a heat-sensitive plate.

A fourth object of the present invention is to provide a temperature sensor for a cooker in which a temperature-sensitive body is securely fixed to a heat-sensitive plate.

[0014]

In order to achieve the above object, a temperature sensor for a cooking appliance according to the present invention comprises a movable member which is vertically movable at a tip of a sensor base, and a tip of the movable member. and become more configuration thermosensitive portion in contact with the heated portion vertically movably mounted on the said heat-sensitive part is the pressure
Heat-sensitive plate in contact with hot part and sensor supporting temperature-sensitive body
-Press the fixing plate and this sensor fixing plate toward the heated part.
The sensor fixing plate has a temperature sensor at the center.
A storage section for storing the temperature sensitive heat sensing element, and both storage sections
The side wall cut and raised on the side and the temperature-sensitive body are fixed.
A pusher having a spring property and provided in a bridging manner in the storage section
Pressure part .

[0015] Further, the side wall of the sensor fixing plate is made thicker than the thickness of the temperature sensible body, and a spring is brought into contact with an end of the side wall in the height direction to form a gap between the tip of the spring and the temperature sensible body. The configuration was provided.

The outer shape of the sensor fixing plate is substantially the same as the planar shape of the heat sensitive plate, and the shape of the storage portion is substantially the same as the shape of the temperature sensitive body.

Further, the temperature thermosensitive body provided in the storage portion of the sensor fixing plate is pressed and held on the heat sensitive plate by a pressing portion provided in a bridging manner in the storage portion and a spring abutting on the side wall of the sensor fixing plate. The configuration was as follows.

[0018]

According to the temperature sensor for a cooker of the present invention, a heat-sensitive portion that comes into contact with an object to be heated is provided at the tip of a movable body provided at the tip of the sensor base, and the heat-sensitive portion is vertically movable with respect to the movable body.
In addition, since the movable body can be swung freely and the movable body can be vertically moved and swung freely with respect to the sensor base, if the object to be heated moves during cooking, for example, When the heated object is inclined, the bottom surface of the object to be heated is also inclined. At this time, the heat-sensitive plate of the temperature sensor for the cooker moves following the movement of the bottom surface with respect to the movable body, and when the movement of the bottom surface is large next, the movable body moves with respect to the sensor base. Since the sensor captures the movement of the object to be heated by two movements, the temperature of the object to be heated can be more reliably captured.

[0019] Further, a storage portion for storing a temperature sensing element for temperature detection in the center, a side wall cut and raised on both sides of the storage portion, and a temperature-sensing device bridged to the storage portion in the heat-sensitive portion in contact with the object to be heated. The temperature-sensitive body is housed in the storage part of the sensor fixing plate having a pressing part for fixing the body, the temperature-sensitive body is fixed by the pressing part, and the spring is brought into contact with the side wall. As it is securely fixed to the heat sensitive plate by the part,
Catch the temperature of the heated object without fail. Further, since the movement of the spring is regulated by the side wall, there is no possibility that the spring touches the temperature-sensitive body and causes an electrical short circuit.

Further, the side wall of the sensor fixing plate is made higher than the temperature-sensitive body, and a spring is mounted on the side wall of the sensor fixing plate. A gap is provided between the tip of the spring and the temperature-sensitive body. Is not applied to the temperature-sensitive material, and the temperature-sensitive material is not broken or deformed by the force of the spring.

Further, since the outer shape of the sensor fixing body is made substantially the same as the shape of the heat sensitive portion, the sensor fixing plate can be easily attached to the heat sensitive plate without using a jig or the like.

Further, since the temperature-sensitive body is held on the heat-sensitive plate by the spring mounted on the side wall via the pressing portion of the sensor fixing plate, the temperature-sensitive body can be securely fixed to the heat-sensitive plate.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. Parts having the same functions as those of the conventional example are denoted by the same reference numerals, and description thereof is omitted.

In FIG. 1 to FIG. 5, reference numeral 14 denotes a cooker having a built-in cooker temperature sensor 1, and the object to be heated 3
The head 11 of the cooker temperature sensor 1 placed on the top is in contact with the bottom surface of the object 3 to be heated. Reference numeral 16 denotes a fixing plate, into which a cut-and-raised portion 18 of the head 11 which is a heat-sensitive portion is fitted into a hole 17 provided at the tip of the movable body 6. The sensor fixing plate 16 includes a storage portion 19 for storing the temperature sensing element 2 for temperature detection in the head 11 and side walls 20 cut and raised on both sides of the storage portion 19.
And a pressing portion 21 having a spring property for fixing the temperature sensing element 2 bridging the storage portion 19.
1 has substantially the same shape as the planar shape. The side wall 20 of the sensor fixing plate 16 is higher than the thickness of the temperature sensitive body 2 and has a stepped body 22 of one step. 1 of this step-like body 22
The spring 7 abuts on the step, and the opposite side of the spring 7 is fixed to the sensor fixing part 5. The temperature thermosensitive element 2 is configured to be attached to the storage section 19 and fixed to the head 11 by the pressing section 21. At this time, the outer shape of the sensor fixing plate 16 is formed to be substantially the same as the inner shape of the head 11. The fixing plate 16 may be configured to be attached to the head 11 by spot welding or the like.

In the above configuration, the temperature sensor 1 for the cooking device
The movable body 6 moves freely with the spring 7 as an operating point with respect to the sensor fixing part 5, the head 11 moves freely by fitting the cut-and-raised part 18 into the hole 17, and the cooker temperature sensor 1 Since the portion moves freely, even if the bottom surface of the heated object 3 moves and inclines, the head 11 surely adapts to the bottom surface and captures the temperature of the heated object 3.

A storage section 19 for storing the temperature sensing element 2 for temperature detection is provided at the center of the head 11 which is a heating section in contact with the object 3 to be heated. A sensor fixing plate 16 provided with side walls 20 cut and raised on both sides of the storage portion 19 and a pressing portion 21 for fixing the temperature sensitive element 2 bridging the storage portion 19.
The temperature-sensitive material 2 is stored in the storage portion 19 of FIG. Since the spring 7 is brought into contact with the side wall 20, the temperature sensible body 2 is securely fixed to the head 11, which is a heat sensible part, by the pressing part 21.
Capture the temperature of the Further, since the movement of the spring is regulated by the side wall 20, there is no possibility that the spring 7 touches the temperature sensing element 2 and causes an electrical short circuit.

Further, the side wall of the sensor fixing plate 16 is formed in a step-like shape 22 which is higher than the thickness of the temperature-sensitive material 2.
Since the spring 23 is in contact with the portion 2, a gap is provided between the spring 7 and the temperature-sensitive body 2, and the spring 23 is directly connected to the temperature-sensitive body 2.
, The force of the spring 21 is not applied to the temperature-sensitive body 2, and the temperature-sensitive body 2 is not broken or deformed by the force of the spring 7.

Further, since the outer shape of the sensor fixing plate 16 is substantially the same as the shape of the head 11 which is a heat sensitive portion, the sensor fixing plate 16 can be easily attached to the head 11 without using a jig or the like. it can.

Further, since the spring 7 is mounted on the side wall 20 of the sensor fixing plate 16 and a force is applied to the sensor fixing plate 16 toward the heat sensitive plate, the temperature thermosensitive body 2 has the spring property of the pressing portion and the spring 7. With this force, the head is securely fixed in a close contact state.
Therefore, the temperature resistance of the temperature-sensitive body 2 from the object 4 to be heated in the head 11 is reduced, and the temperature-sensitive body 2 has an effect of reliably capturing the temperature of the object 3 to be heated.

[0030]

As described above, the temperature sensor for a cooker according to the first aspect has the following advantages.

(1) A heat-sensitive portion that comes into contact with the object to be heated is provided at the tip of a movable body provided at the tip of the sensor base, and the heat-sensitive portion moves vertically and swingably with respect to the movable body, In addition, since the movable body also moves up and down and swings freely with respect to the sensor base, when the object to be heated moves during cooking, the temperature sensor for the cooker is moved by two movements. Since the movement of the heated object is captured, the temperature of the heated object can be ascertained more reliably.

(2) The temperature-sensitive body is securely fixed to the heat-sensitive plate by the pressing portion, so that the temperature of the object to be heated is reliably captured.

(3) Since the movement of the spring is regulated by the side wall, there is no possibility that the spring touches the temperature-sensitive material and causes an electrical short circuit.

The temperature sensor for a cooker according to claim 2 is provided.
Information, the sidewalls of the sensor fixing plate in the high step-like body than the thickness of the temperature sensitive body, without spring is applied to the temperature sensitive body because the spring abuts on a portion of the stepped body of the sensor fixing plate, the temperature The thermal element does not break or deform under the force of the spring.

Further, in the temperature sensor for a cooking appliance according to the third aspect, since the outer shape of the sensor fixing plate is substantially the same as the shape of the heat-sensitive portion, a jig or the like is used for attaching the sensor fixing plate to the heat-sensitive portion. It can be easily installed without any.

In the temperature sensor for a cooking appliance according to the fourth aspect of the present invention, since the pressing portion is provided with a spring property, the temperature-sensitive body is securely fixed to the heat-sensitive plate by the pressing portion in a state of close contact with the spring force. The temperature resistance from the object to be heated to the temperature-sensitive body in the heat-sensitive portion decreases, and the temperature-sensitive body reliably captures the temperature of the object to be heated.

[Brief description of the drawings]

FIG. 1 is a perspective sectional view of a temperature sensor for a cooker according to an embodiment of the present invention.

FIG. 2 is a plan view of the temperature sensor for the cooking appliance in the embodiment.

FIG. 3 is an external cross-sectional view of the temperature sensor for the cooking device in the embodiment.

FIG. 4 is an external view of a cooker equipped with the cooker temperature sensor in the embodiment.

FIG. 5 is a partial perspective view of a cooker temperature sensor according to another embodiment of the present invention.

FIG. 6 is a sectional view of a first conventional temperature sensor for a cooking appliance;

FIG. 7 is a sectional view of a second conventional temperature sensor for a cooking appliance.

FIG. 8 is a sectional view of a third conventional temperature sensor for a cooking appliance.

FIG. 9 is a sectional view of a fourth conventional temperature sensor for a cooking appliance.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Temperature sensor for cookers 2 Temperature sensitive body 5 Sensor base 6 Movable body 7 Spring 11 Heat sensitive section 16 Sensor fixing plate 19 Storage section 20 Side wall 21 Press section

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Shuji Ito 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-59-56622 (JP, A) JP-A-61- 29726 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) G01K 1/14

Claims (4)

(57) [Claims] A movable body attached to a tip end of a sensor base so as to be movable up and down; and a heat sensitive part which is attached to a tip end of the movable body so as to be movable up and down and comes into contact with a heated portion ,
The heat-sensitive part includes a heat-sensitive plate that contacts a heated part and a temperature-sensitive plate.
A sensor fixing plate that supports the body and this sensor fixing plate
A spring for pressing in the direction of the portion to be heated;
The base plate is a storage section that stores a temperature sensitive element for temperature detection in the center
And the side walls cut and raised on both sides of the storage portion, and the temperature
It has a spring property to fix the heat sensitive body and bridges to the storage part
Temperature sensor for a cooker, comprising a pressing portion provided in the shape of a bridge
- 2. A side wall of the sensor fixing plate is made thicker than a thickness of the temperature-sensitive material, and a spring is brought into contact with an end of the side wall in a height direction to form a gap between the tip of the spring and the temperature-sensitive material. cooker temperature sensor according to claim 1, wherein provided. 3. A sensor outer shape of the fixing plate with a planar shape substantially the same as the heat sensitive plates, cooker temperature sensor according to claim 1, wherein configuring the shape of the housing portion in a shape substantially the same shape of the temperature sensitive body. 4. A temperature sensing element provided in a storage portion of the sensor fixing plate is pressed and held on the heat sensing plate by a pressing portion provided in a bridging manner in the storage portion and a spring abutting on a side wall of the sensor fixing plate. The cooker temperature sensor according to claim 1 .