JPS598089Y2 - High frequency heating device - Google Patents

Description

[Detailed description of the invention] Several high-frequency heating devices have been considered in which the heated object moves in and out as the door opens and closes, but in particular a type in which the door moves parallel to the heating chamber has been proposed. This is extremely easy to use and useful when placing a high-frequency heating device in a low location.

However, in the conventional type, there is a restriction between the drawing state of the object to be heated and the size (depth) of the heating chamber, making it impractical.

1 to 3 show a conventional example. In the figures, 1 is a heating chamber, and 2 is a door body for opening and closing the heating chamber 1, which is held by a rail portion 3 so as to be openable and closable.

Reference numeral 4 denotes a rotating mounting table for the purpose of improving heating unevenness, which is made of SUS 304, for example, on which the object to be heated 5 and the saucer 6 are placed and rotated.
It is held on a bottom plate 7 made of a magnetically permeable metal material such as.

Reference numeral 8 indicates a pulley 10 that rotates the pulley 10 around a shaft 11 via a belt 9 by a motor, and a rotating mounting table 4.
are provided with rollers 12.13 and magnets 14.15, respectively, and the magnets 14.15 are connected to each other by separating the heating chamber bottom 16 and the bottom plate 7, which are made of a magnetically permeable metal material such as SUS 304. The rotation of the pulley IJ-10 is transmitted to the rotary mounting table 4, and the rotary mounting table 4 also rotates.

The bottom plate 7 has one end fixed to the inner surface of the door body 2 that forms part of the wall surface of the heating chamber 1 via a holder 17, and the other end fixed to the bottom of the heating chamber via a rotatably fixed roller 18. It's on top of 16.

A heater 19 is another heat source of the heating chamber 1.

The bottom plate 7 holding the rotary mounting table 4 is connected to the heating chamber 1 of the door body 2.
It appears and disappears as shown in Figure 3 as it opens and closes in the parallel direction.

In this case, the reason why the bottom plate 7 is held on both sides by the rollers 18 is that if the bottom plate 7 is held on one side with the door body 2 closed, the bottom plate 7
(The free end of the cantilever may move up and down due to the weight of the object to be heated 5, etc., or the free end may gradually sag during use.) A magnetic drive system for the rotary mounting table 4, which does not allow a very large distance between the chamber bottom 16 and the bottom plate 7, cannot be adopted.

This is also because uniform heating cannot be expected because the heating state can be determined by the top and bottom of the bottom plate 7.

However, in this conventional method, the amount of draw-out of the heated object 5, that is, the pull-out amount l1 of the door body 2, becomes a value considerably smaller than the depth l2 of the heating chamber 1, and the distance between the heated object 5 and the saucer 6 is considerably smaller than the depth l2 of the heating chamber 1. This makes it very difficult to put in and take out the device.Therefore, the advantage of adopting a drawer-type door body 2 and a method in which the heated object 5 appears and disappears as the door body 2 is opened and closed is that the device can be placed as low as on the floor. Object to be heated when placed in position 5
And, the advantage that the saucer 6 can be easily taken in and taken out and is convenient to use is lost.

In the conventional system, in order to solve this problem, it is necessary to make the depth l2 of the heating chamber 1 considerably larger than the object to be heated 5 and the saucer 6, but in this case, the depth of the heating chamber 1 has to be made considerably larger than that of the conventional device that does not have a drawer type. l2 becomes abnormally large, which not only looks bad but also makes it difficult to clean the inside of the heating chamber 1.

In addition, there are large restrictions in terms of heating distribution and power supply in the heating chamber 1, which is disadvantageous, and the cost is also very high.Also, even when heating is performed using the heater 19, the heating chamber 1 is too large, making it inefficient. There is a problem.

Furthermore, even in the case of high-frequency heating, there is a problem in that if the heating chamber 1 is too large, the wall loss of the heating chamber 1 increases and the heating efficiency decreases.

The present invention solves the above-mentioned problems, and one embodiment of the present invention will be described below with reference to FIGS. 4 to 6.

In addition, the difference from the conventional example in the figure is that when the door body 2 is closed, the bottom plate 1 has one end held by a holder 17, so that the door body 2
The other end is held at the heating chamber bottom 1 via a roller 18.
However, when the door body 2 is opened, the roller 18 protrudes outside the heating chamber 1 and floats in the air, as shown in FIG. 6, and the bottom plate 7 is held on the door body by the holder 17. It is in a so-called cantilevered state.

By making the bottom plate 7 cantilevered when the door body 2 is open and supported on both sides when it is closed, the depth l2 of the heating chamber 1 can be increased.
A sufficiently large pull-out amount l1' of the door body 2 can be obtained without increasing the amount.

In addition, when the door body 2 is closed, the bottom plate 7 is supported on both sides, so the distance l3 between the magnets 14 and 15 is stable, the rotation of the rotary mounting table 4 is stable, and the height of the bottom plate 7 in the vertical direction is It is possible to prevent uneven heating due to electric field fluctuations in the heating chamber due to fluctuations.

20 is a roller 1 provided near the opening of the heating chamber bottom 16
This is to help the bottom plate 7 smoothly transition from a cantilevered state to a both-supported state at the portion where the bottom plate 8 rides on.

As explained above, according to the present invention, the following effects can be expected.

(1) The amount of drawer of the door body can be set regardless of the depth of the heating chamber, and since both sides are supported during operation, the rotation of the rotary mounting table and the state of high-frequency heating can be made stable.

(2) There is no need to make the heating chamber larger than necessary, so
It has a good appearance and is advantageous in terms of ease of use such as cleaning.

(3) Since there is no limit to the depth of the heating chamber, there is a large degree of freedom in design, which is advantageous in terms of heating distribution and power supply.

(4) Since there is no need to make the heating chamber unnecessarily large, costs can be reduced.

(5) In both cases of heater heating and high-frequency heating, good thermal efficiency can be obtained because the heating chamber is compact.

(6) By providing something like a roller riding part as a buffer structure for transitioning from a cantilever state to a double support state, the smooth operation feeling when opening and closing the door body and the durability of the door body and bottom plate are greatly improved. You can improve it.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional high-frequency heating device with the door closed, Fig. 2 is a top view of the same, and Fig. 3 is a sectional view of the same with the door open.
FIG. 4 is a cross-sectional view of a high-frequency heating device showing one embodiment of the present invention with the door closed, FIG. 5 is a top view of the same, and FIG. 6 is a cross-sectional view of the high-frequency heating device with the door closed. 1... Heating chamber, 2... Door body, 3...
...Rail part, 4...Rotating mounting table, 6...
... saucer, 7 ... bottom plate, 17 ... holder, 18 ... roller

Claims (3)

[Scope of utility model registration request] (1) A heating chamber, a door that opens and closes the heating chamber, a rotating mounting table that rotates the object to be heated, and a mechanism that allows the rotating mounting table to be moved out of the heating chamber as the door is opened and closed while holding the rotating mounting table. The heating chamber is provided with an opening of the bottom plate, and the bottom plate is held on one side when the door is open, and on both sides when the door is closed. A high-frequency heating device that is provided with a riding part in the vicinity of the bottom plate for shifting from a cantilevered state to a both-supported state as the door body is opened and closed. (2) Cantilevering when the door body is open means that one end of the bottom plate is held by the door body, and it is held only by this one end,
Holding the door body in the closed state on both sides means that the door body is held on the bottom surface of the heating chamber by a roller provided at the other end of the bottom plate, as set forth in claim 1 of the utility model registration. High frequency heating device. (3) The high-frequency heating device according to claim 1, wherein the rotating mounting table is driven by magnetic force.