JPS60263032A - High-frequency heating device - Google Patents

Abstract

PURPOSE:To obtain the highly reliable high-frequency heating device without causing any malfunction which may be caused in case the device is used without employing a temperature probe by forming a ventilating path, communicated with the outside of an oven, in the rotary support mechanism of the temperature probe. CONSTITUTION:A jack 11 for the rotary support of the temperature probe is formed with a ventilating path 27 equipped with a ventilating hole 26, opposing to the penetrating hole 20 of temperature probe and being communicated with the outside of the oven, and a dewing plate 28, having an outer diameter larger than the jack, is provided on the ventilating hole 26. When an electronic range is used without utilizing the temperature probe, water vapor, generated from the substance 6 to be heated, passes the chamber of oven from the penetrating hole 20 through the ventilating path 27 and the ventilating hole 26 to the outside of the oven. Accordingly, the water vapor will never dew in the jack, therefore, water drop will never be adhered to contact pieces 24A, 24B having contact pieces 23A, 23B equipped with electricity outputting sections 22A, 22B and the contact pieces 24A, 24B will never be conducted. The water vapor, which passes through the ventilating hole 26, dews on the dewing plate 28 and the water drop flows along the rim of a cone and drops on the ceiling plate 1A of the oven, therefore, it will never drop into the jack 11.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a high-frequency heating device having a temperature probe for detecting the temperature of an object to be heated by the high-frequency heating device.
This improves the malfunction that occurs when used without a temperature probe.

Structure of a conventional example and its problems FIGS. 1 and 2 are schematic cross-sectional views of the structure of a conventional high-frequency heating device with a temperature globe provided with a jack on an oven top plate. A motor 2 is provided at the bottom of the oven 1, and the motor 2 is driven by a rotary shaft 3. A turntable 6 supported by rollers 4 is rotatably disposed, and food 6 is placed on it and heated by microwaves. The temperature detection unit 8 of the glove is inserted into the food 6 and temperature information is transmitted via a cable 9 and a plug 10, and 11 is an oven top plate corresponding to the center axis of the turntable 5. 1A
The plug 1o of the temperature globe 7 is held by a spring metal plate 13, and the electric output terminal The terminal 14a is also pressed against the sleeve 15 so as to output an electrical signal to the electrical output terminal 14b, each of which is separated by an insulator 16. The jack 11 rotates while being surrounded by a pipe 17 made of resin to ensure sliding and smoothness. The steam generated when the food 6 is heated is discharged indoors through the looper 18A of the body 18 through the exhaust hole 1B of the oven top plate 1A. FIG. 2 shows that the temperature probe 7 is removed from the temperature probe mounting section and the object to be heated 6 is used as a normal microwave oven. At this time, the temperature probe 7 and the jack 11 of the temperature globe rotation support device are directly exposed to the steam of the object to be heated and the oil 1 food juice generated in the heating chamber, and especially the rotation support mechanism (jack) 1
1 is in a sealed configuration, so it is always filled with steam, and rust and dirt adhere to the spring metal plate 13, sleeve 15, and insulator 16, resulting in an increase in contact resistance and a decrease in insulation resistance.

When the temperature globe 7 function is required, if a temperature probe is inserted and connected, contact resistance increases and insulation resistance decreases, making it impossible to transmit accurate electrical signals to the temperature control circuit disposed outside the oven. In severe cases, problems such as loss of continuity may occur. In addition, the inside of the jack 11 of the rotation support mechanism is filled with steam and at the same time, condensed water is generated.
Water droplets adhere to the spring metal plate 13, the sleeve 15, and the insulator 16, and the water droplets connect the spring metal plate 13 and the sleeve 16, creating a resistance value at the electrical output terminals 14A and 14B, and the temperature probe is inserted. Connections and control circuitry outside the oven will detect this and cause a malfunction that will stop normal microwave operation. Furthermore, you cannot use a normal microwave oven until the water droplets are no longer connected. Furthermore, since the interior of the rotation support device (jack) 11 is in a sealed state, water droplets evaporate slowly, resulting in a major problem in that it takes a long time to return to normal operation.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks by a simple method, and provides a highly reliable high-frequency heating device that does not malfunction.

Structure of the Invention In order to achieve the above object, a glove insertion hole, a ventilation hole communicating with the outside of the oven, and a ventilation passage are formed in the temperature probe rotation support mechanism, and a heat transfer plate is provided on the north passage. be.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 is a schematic cross-sectional view of a high-frequency heating device with a temperature globe provided with a rotation support mechanism and a heat transfer plate according to the present invention. A motor 2 is provided at the bottom of the oven 1, and the motor 2 is driven by a rotating shaft 3. A turntable 6 supported by rollers 4 is rotatably disposed, and an object to be heated 6 is placed on the turntable 6 and heated by microwaves. Reference numeral 11 denotes a temperature probe 7 fixed via a nut 19 to or near the center axis of the oven top plate 1A corresponding to the center axis of the turntable 5.
It is a jack of rotation support device. The jack of the rotation support device includes a sleeve 21 provided with an insertion hole 20 for the temperature probe 7, and an electric output part 22a.

The contact pieces 24a and 2+b1 are made of leaf springs and have spherical contacts 23a and 22b. The body 25 is provided with a ventilation hole 26 that corresponds to the insertion hole 20 of the temperature probe 7 and communicates with the outside of the oven, forming a ventilation passage 2, the ventilation hole 26 and the ventilation passage 27.
A dew condensation plate 28 is provided on the yaw. The dew condensation plate 28 has a conical shape and is formed larger than the outer diameter of the jack 11.

1B is a steam exhaust hole on the oven top plate 1A, 18 is a body, and 18B is a steam exhaust louver, a partition plate 29 for partitioning the flow of steam, a fucoita 301 and a leg rubber 31, respectively.

If you use it as a microwave oven without using a temperature glove, you will be directly exposed to the steam of the heated object 6 and the oil 9 food juice generated in the heating chamber. The ventilation hole 2 passes through the ventilation passage 27.
From step 6, let it come out of the oven and shake. First, since steam is allowed to escape outside the oven, condensation is less likely to occur inside the jack.
Since there is no problem of water droplets adhering to the plate spring contact pieces 24A, 24B having the contacts 23A, 23B having the contact elements 23A, 23B, which cause conduction, there is no fear of malfunction.

The steam coming out from the ventilation hole 26 of the jack 11 flows into the body 1.
8, condensation occurs due to the temperature difference with the body 18 and large water droplets are formed, causing the upper part of the jack 11 or the ventilation hole 26
It will fall into the oven.

It's a trench, when water droplets fall into the oven, contact 23
Regarding A and 23B, there may be a problem with water droplets accumulating inside the jack 11, or because a conical condensation plate 28 larger than the jack is provided on the ventilation passage 27, the steam that escapes from the ventilation hole 26 is absorbed by the condensation plate. Condensation occurs, and the water drops flow along the edge of the cone, fall onto the oven top plate 1A, and
To prevent the voltage from falling within 1, the electronic output terminals 22A and 22B
is not conductive due to water droplets. Therefore, there is no need to worry about malfunctions.

There is a concern that dirt may adhere to the jack, but contact 2 takes out the electronic output from plug 1o of temperature globe 7.
3A and 23B have spherical contacts, so there is less dirt attached to them. Also, when inserting the plug 1°, remove dirt and
Since it is removed, stable electrical output can be obtained at all times.

Effects of the Invention As described above, according to the high-frequency heating device with a temperature probe of the present invention, the temperature globe 7 can be separated from the part with the temperature probe housed, and malfunctions that occur when the heated object is used as a normal microwave oven can be prevented. A probe insertion hole, a ventilation hole communicating with the outside of the oven, and a ventilation path are formed in the temperature probe rotation support mechanism to allow steam to escape, and a condensation plate is used to force condensation to prevent water droplets from falling onto the jack. Steam and oil generated from heated objects.

This is a high-frequency heating device with a highly reliable temperature glove that eliminates malfunctions caused by contamination with food juices, etc.

[Brief explanation of the drawing]

Fig. 1 is a half-sectional view when using a conventional temperature glove, Fig. 2 is a half-sectional view when using the conventional microwave oven, and Fig. 3 is a half-sectional view when using a microwave oven showing an embodiment of the present invention. It is a diagram. 11... Jack, 2Q... Plug insertion hole, 26... Ventilation hole, 27... Ventilation path, 28... Condensation plate. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

Claims (2)

[Claims] (1) The detection part of the temperature globe is inserted into the object to be heated on the table provided in the oven, and the magnetro A is controlled based on the detected temperature, and the electrical output is configured to removably support the temperature globe. a terminal, a plug insertion hole for inserting the temperature probe into the terminal, a jack for forming a ventilation hole and a ventilation path communicating with the plug insertion hole and the outside of the oven, and a condensation plate provided on the ventilation path; high frequency heating device. (2) The high frequency heating device according to claim 1, wherein the condensation plate is conical and larger than the jack.