JPS60111822A - High-frequency heating device - Google Patents

Abstract

PURPOSE:To simplify the rotary support mechanism of a temperature probe and increase reliability by a method wherein the connection of the temperature probe is constituted detachably by the engagement of a plug and a jack and one side of a contacting section is formed by a soft and oil-impregnated metallic material. CONSTITUTION:A jack 15 is attached to a ceiling plate 6A of an oven and the jack 15, into which the plug 5 of a temperature probe 4 is inserted, is consisting of a sleeve section, equipped with an electricity outputting section 20, an insulating plate 22, a leaf spring type contacting piece equipped with insulating plate 22 and electricity outputting sections 23a, 23b and a body securing them while an inside sleeve 30 is force- inserted into the outside sleeve 29 provided at the center of the sleeve and oil is impregnated into the inside sleeve 30. Semispherical contacting pieces 33a, 33b, provided with a soft hardness and impregnated with oil, are attached by calking to the tip ends of the contacting pieces 32a, 32b provided with resilient porperty. The plug is consisting of a conducting body (earth side) 5a, an insulator 5b and a tip end conductor 5c. Accordingly, the connecting section will never by damaged and the plug 5 is rotated smoothly without wearing since the oil acts as a lubricating agent. On the other hand, stable signals may be transmitted to a control circuit at all times by the contacting pieces and the sleeve section.

Description

DETAILED DESCRIPTION OF THE INVENTION The field of unspecified industrial application relates to a high-frequency heating device using a turntable and having a temperature probe for detecting the temperature of a heated object, and a rotation support mechanism for the temperature probe. This is an improved version of .

Conventional configuration and its problems Generally, when a temperature sensor is installed in a high-frequency heating device using a turntable, a temperature sensor probe of the heated object sends an electrical signal when a preset temperature outside the oven is reached. The power supply to the high frequency power generation source is cut off.

Since a turntable is used, the object to be heated rotates at the same time as the turntable. For temperature detection and temperature control,
When a temperature sensor is inserted into an object to be heated, a problem will occur if this temperature sensor does not rotate in synchronization with the turn chill pull. If they do not rotate synchronously, problems such as twisting of cables, overturning of food, movement of food, and temperature probes falling out of heated objects may occur. In addition, in cases where the temperature probe is attached to the temperature probe attachment part, if the temperature probe is used as a normal electric range in 1-2 above, the connection between the temperature probe and the temperature globe attachment part will occur directly in the heating chamber. steam or oil from the heated material.

When exposed to food juices, rust and dirt adhere to the electrical contact portion of the temperature probe mounting portion, resulting in an increase in contact resistance and a decrease in insulation resistance. When the temperature probe function is required, if the temperature probe is inserted and connected to the temperature glove attachment part, the contact resistance increases and the insulation resistance decreases, making it impossible to transmit accurate electrical signals to the temperature control circuit disposed outside the oven. In extreme cases, problems such as four letters being lost may occur. This temperature globe incorporates 'temperature'
One embodiment has been proposed as a mechanism for heating in a controlled manner, and a simplification of the above-mentioned implementation configuration has been proposed.

FIG. 1 is a one side view showing the latter example.

The structure mainly consists of a sleeve 1, a relay jack 2, and spring brushes 3 and 3' for extracting electrical signals.The plug 6 of the temperature probe 4 is inserted into and fixed in the relay jack 2, and the plug 6 of the temperature probe 4 is inserted into the relay jack 2 and fixed. rotates. Furthermore, the electrical signal of the plug 5 of the temperature probe 4 is guided to the upper end surface of the relay jack 2 and taken out from the spring brushes 3, 3', and to prevent leakage, the sleeve 1 and the relay jack 2 are brought into contact with metal. We are taking measures to prevent this.

However, in this configuration, firstly, a component called the relay jack 2 is required. Second, parts called brushes 3 and 3' for extracting electric signals are required on the upper part, and the overall structure is large. Third, metal contact is used to prevent leakage waves, but when rotating, the relay jar, sleeve 2, or sleeve 1
There is a real problem that the relay jaw stops rotating due to scratches on the side.
It is necessary to insert resin or the like in between to ensure smooth rotation, and in this case, a special tilting mechanism must be provided, making the structure complicated and unreliable.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and provides a highly reliable high-frequency heating device that further simplifies the rotational support mechanism of the temperature probe.

Structure of the Invention In order to achieve the above-mentioned object, the present invention includes a detection unit inserted into an object to be heated on a turntable rotatably provided in an oven, and a magnetron controlled based on the detected temperature. In the high-frequency heating device with a temperature probe, the mechanism for rotatably supporting the temperature probe is disposed at least at the central axis position of the oven top plate corresponding to the center of the turntable, or in the vicinity thereof, and The lobe connection is a removable structure that can be made by engaging the plug and the jack, and the jack consists of a slave and a spring contact piece, and when the plug is inserted into the jack, the spring contact piece Hold it in place and hold it.

The contact portion between the lug and the jack sleeve and the contact portion between the plug and the jack contact piece are made into metal contact, and one of the contact portions is formed of a metal material having a soft hardness and impregnated with oil. The temperature of the heated object is detected by extracting an electrical signal through the metal material.

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

FIG. 2 is a schematic configuration diagram of a temperature probe high frequency heating device equipped with a rotation support mechanism of the present invention.

A motor 7 is provided at the bottom of the oven 6, and a turntable 10 supported by rollers 9 is rotatably arranged by a rotary shaft 8 (driven by the motor 7 5), and food 11 is placed on this for microwave heating. Insert the temperature detection part 12 of the temperature probe 4 into the food 11 and connect the cable 13 and plug 5.
Temperature information is transmitted as an electric signal to the magnetron control circuit 14 via the magnetron control circuit 14, and 16 is installed at or near the center axis of the open top plate 6A corresponding to the center axis of the turntable 10. The support is a rotation support device for the temperature probe 4 fixed via a plate 16,
The plug 5 of the temperature probe 4 is mechanically connected, and the signal wire 17
a, 1γb are electrically connected to transmit the electrical signal. When the food 11 reaches the finishing temperature due to microwave heating, the magnetron control circuit 14 switches to the half-speed switch 1.
8 is opened to cut off the power supply to the magnetron power supply circuit 19 and stop the operation of the high frequency heating device.

This rotation support device 16 will be explained with reference to FIG. The rotation support device 15 generally includes a sleeve portion 21 having an electric output portion 20, an insulating plate 22, a plate having electric output portions 23a and 23b), a screwable contact piece portion 24, and a body 25 for fixing them. It consists of

The sleeve part 21 has an electric output part 20 with a hole 26, and a screw hole 27 for attaching the supplement to the plate 16 for six radish ovens.
a, 27b, and T-shaped bent portions 28 & 28b when fixed to the body 25 are located symmetrically, and the above are constructed of an integral plate. In the center, the inner sleeve 3o is press-fitted into the outer sleeve 29, and the two integrated plates are fixed by caulking with the outer sleeve 29, thereby forming the sleeve portion 21.

The inner diameter of the inner sleeve 30 is smaller than the inner diameter of the outer 4III sleeve 29. Further, the inner sleeve 3o is impregnated with oil, and food oil is used as the impregnating oil. Furthermore, when the plug 6 of the temperature probe 4 is inserted, it makes electrical contact.

The inner sleeve 30 has a width of 2 to 3 mm and is located at the back of the outer sleeve 29 on the integral plate cone side.

24 is a contact piece and is U-shaped, and the medium flames 31a and 31b facing each other are cut out in a U-shape.
Contact piece 3 bent inward in a V-shape to provide spring properties
22L, 32b, and a contact piece 32a.

Hemispherical contacts 33a and 33b impregnated with soft oil are caulked to the tips of 32b, and food-based oil is used as the impregnating oil. The upper part is convex to serve as electric output parts 23&, 23b. The contact spacing is smaller than the outer diameter of the plug 5 of the temperature probe 4, and the contact piece 32a
, 3 and 2b have different spring pressures.

26 is a body which is open at the bottom, and the upper part has square holes 34a for the electric output parts 232L and 23b of the contact piece part 24;
34b, a steam hole 35 of about φ6 is provided in the center.

Reference numeral 36 denotes a guide plate for fixing the contact portion 24 when it is inserted, and is provided symmetrically inside the body 25.

37 is a T-hand plate 28a which is convex to the outside of the body 25 and is fixed to the body of the sleeve portion 21;

28b can be inserted. Also, oven top plate 6
To attach the temperature probe, the metal fittings 16 are welded together. The metal fitting 16 is attached to the fixing hole 38a of the sleeve portion 21 of the jack 15.

38b and a through hole 39 in the outer sleeve 29.

The jack 15 is inserted into the body 26 along the guide plate 36 provided inside the body 25 with the electrical output parts 23 & 23b of the contact piece 24 facing upward. Electrical output section 23
&, 23b are fixed to the outside through square holes 34&, 34b of the body 25, with the U-shaped upper surface of the contact piece portion 24 hitting the body 25. Next, a square insulating plate 22 with a hole diameter larger than the outer diameter of the plug 6 of the temperature probe 4 is inserted into the center.
Furthermore, the sleeve portion 21 is inserted, and the T-shaped portions 28a and 28b of the sleeve portion 21 are connected to the convex portion 37a of the body 25.

The structure is such that the jack 15 is assembled by folding in between 37b.

Figure 4 shows the oven top plate 6AK jack 15 with screws 40i.
A cross-sectional view is shown in which the plug 6 of the temperature probe 4 is inserted through L and 40b, and the end surface of the outer sleeve 29 of the sleeve portion 21 is located below the bottom surface of the oven top plate 6. The plug 5 includes a conductor (earth III) 5a, an insulator 6B, and a tip conductor 6C.

The contacts 33a and 33b of the contact piece portion 24 having the electrical output portions 2sa and 23b engage with the recess of the plug 5c and mechanically hold the plug 5 through elastic pressure contact. They are freely connected and can be hung from the oven top plate 6A. Contactor 33a
, 33b pressure is made different by the pressure of the contact pieces 32a and 32b, which are strong on one side and weak on the other side, and the five plugs are placed in a state of forcibly contacting the inner sleeve 30 of the sleeve part 21, and are in constant contact. The sleeve portion 21 is integrated, and the oven top plate 6A is attached using the screws 39 &,
39b, and the oven top plate 6A is grounded). Since it is like this,
The electric output part 20 is used as a ground terminal, and the other electric output part 23
&, 23b is a hot terminal.

Figure 5 shows 6 people on the oven top and 16 jacks as in Figure 4.
are attached via screws 392L and 39b, and 5a and 5c of the plug 5 of the temperature globe 4 are made of metal impregnated with food oil. In the outer sleeve, plug 5c
The contact partners are contact pieces 321L and 32b.

The rotation support device 15 for the temperature globe 4 is configured as described above, and when the food 11 is placed on the turntable 10 and rotated, the temperature probe 4 is connected to the cable 1.
3, even if the plug 5 of the temperature probe 4 is rotated integrally with the food 11, there is no need to worry about the twist, and the electric signal line 17a as temperature information.

17b. In addition, in terms of rotation, the electrical output connection parts (plug 5a and inner sleeve 30, plug 5C and contacts 33a, 33b, plug 5a and outer sleeve 29, plug 5C and contacts 32a, 32b) are connected to either one of them. The rotating connection part uses conductive paulownia material such as soft copper and is impregnated with food-based oil.
The plug 6 rotates smoothly without being scratched and without wear due to the oil acting as a lubricant.

The oil used is food-based oil, so it's hygienic and you don't have to worry about it.

Electrical signals are configured such that stable signals can always be transmitted between the contact piece and the sleeve, and in the plug 5C, they are always in contact with the pressing force of the spring, and since the contact part 24 is integrated, the contact 33 a, 33 b or contact 324.3
2b Even if contact is insufficient for a moment due to dust or the like on either side, the other side remains in contact and stable electrical output can be obtained.

In the plug 5a, the contact 332L.

Since the pressures 33b, 32&, and 32b are applied differently, the plug 5a is always in contact with the inner sleeve 30 or the outer sleeve 29, and an electrical signal can be stably extracted.

When used as a high-frequency heating device, the jack 15 directly removes the steam and oil 5 of the heated object generated in the heating chamber.
There is a steam hole 35 in the upper part of the body 25 of the jack 15, and the inner and outer sleeves 30.
Since the steam from inside 29 escapes to the outside through the steam hole 36, it is difficult for condensed water to accumulate. In addition, since the sleeve surfaces 29 & 30 of the electrical contact portion are located on the back side of the exposed surface inside the refrigerator, the contact width is set to about 2 to 3 TuL to reduce the contact area, so dirt can be prevented. It is a difficult configuration. Also, when inserting the plug 5, the sleeve surface 29&,
The dirt on the contacts 33a, 3 is scraped off, and the dirt on the contacts 33a, 3
3b interval and the interval between the contact pieces 322L and 32b are smaller than the outer diameter dimension of the plug 5C, so dirt is scraped off when inserted, so a safe electrical output can always be taken out.

To prevent leakage, the plug 5a and the inner sleeve 30 are in metal contact and set at ground potential, so the microwave is reflected on the metal surface and the incident wave and reflected wave cancel out in the vicinity, making the microwave extremely It is vulnerable to leakage, heat generation, and sparks. In particular, since the spring contact piece 24 is forcibly pressed to bring metal into contact, this also further suppresses microwave leakage.

In the conventional configuration, the temperature probe jar, which does not require rotation, has a screw on the external sleeve and is attached to the oven 6.
It was tightened from the inside of the oven, but the oven 6
Since it can be accessed from outside the refrigerator via screws 39a and 39bi, it is easy to assemble.

Further, since the electrical output is directly taken out from the plug 5 through the contact portion 24 and the IJ-bubble portion 21, the jar itself can be made extremely compact.

Effects of the Invention As described above, according to the high frequency heating device with a temperature glove of the present invention, the temperature probe 4 can be detachably taken out from the oven 6 with its plug 5, and even when the food 11 is rotated by the turntable 1o. It rotates together with the food 11.

Rotation is smooth as it uses soft materials such as copper impregnated with food-based oil, and steam holes are provided to protect against dirt. Spring-like elastic contact is made at two or more force points, and on the ground terminal side, the contact area is made small and contact is made by forced suppression, so that a stable electrical output can always be obtained. In addition, it is smaller because it is taken out directly from the plug.

The installation is external, and the assembly work is the same as above, and the metal contact further suppresses radio wave leakage, and the structure is simplified and the desired safety measures are taken, making it a practical product.

[Brief explanation of drawings]

Fig. 1 is a half-sectional view of a conventional example, Fig. 2 is a schematic configuration diagram of a high-frequency heating device with a temperature probe equipped with a rotary support mechanism, which is an embodiment of the present invention, and Fig. 3 is an exploded view of the rotary support part. A perspective view, Figure 4 is a sectional view when the plug is inserted into the rotating support part, Figure 6 is a sectional view when the plug is inserted into the rotation support part,
The figure is a sectional view of another embodiment of the present invention when a plug is inserted. 4...Temperature probe, 5...Plug, 15
・Old...Rotation support device, 21...Sleeve part, 2
2...Insulating plate, 23a, 23b, 20...
...Electric output terminal, 24...Contact piece part, 25...
...Body, 35...Steam hole, 29--Outer sleeve, 30...Inner sleeve. Name of agent: Patent attorney Toshio Nakao (1st person)
Figure 2 Figure 4 Figure 5

Claims (1)

[Scope of Claims] (1) An oven chamber for storing an object to be heated, a high-frequency oscillator that supplies high frequency waves into the oven chamber, and a section provided in the oven chamber in which the object to be heated is placed. and a temperature glove that inserts a detection part into the heated object and controls a high frequency oscillator based on the detected temperature,
The temperature probe is rotatably disposed at least at or near the center axis of the oven top plate corresponding to the center of the turntable, and is configured to be detachable by engaging a plug and a jack. The plug consists of a sleeve and a spring contact piece, and when the plug is inserted into the jack and held by the spring contact piece, the contact part between the plug and the sleeve of the shack, and the contact piece between the plug and the jack. The contact portion is brought into metal contact, extracts a gas signal, and detects the temperature of the heated object.
The high-frequency heating device described in Section 1. (3) The high-frequency heating device according to claim 1, wherein a contact piece is provided on the contact piece of the jack. (4) The plug is held in place by two or more spring contacts, and the hot terminal side contact is short-circuited (integrated configuration) to suppress the contact differently, and the ground side terminal 2. The high-frequency heating device according to claim 1, wherein the sides are configured to be 2 to 3 times ugly during contact so that the contact area is small and the electrical signals are extracted. (5) The jack consists of a body that holds a sleeve and a contactor, and the top surface of the body is open, and the sleeve part has an integrated structure with a hole for an oven hole, a body fixation, and an electric output part. 2. The high-frequency heating device according to claim 1, which is attached to an oven via screws or the like.