JPH01219420A - High frequency heating device - Google Patents

Abstract

PURPOSE:To facilitate a removal or attachment of a shelf plate and further facilitate a removal or attachment of a packing to or from the shelf plate by a method wherein the packing for sealing between the shelf plate and a wall surface of a heating chamber is arranged, and a front edge of the shelf plate is provided with an engaging piece for rotationally supporting the shell plate. CONSTITUTION:Each of rising parts 14, 15 and 16 is formed at each of right, left and rear ends of a shelf plate 4, and a front end side is formed with a slant surface 17 descending forwardly. In order to fix the shelf plate 4 to the heating chamber 2, fixing base portions 24 of packing elements 21, 22 and 25 are inserted while being slid from one end side between I-shaped projection 27 and L-shaped projection 29 and installed there. Then, a claw 19 placed at the front end of the shelf plate 4 is engaged with a flange 18 of a front plate 11 of the heating chamber 2 and then the front end of the shelf plate 4 is engaged. The shelf plate 4 is pushed into the heating chamber 2 while being rotated from above into the heating chamber 2 around its front end. Tongue pieces 25 of the packings 21, 22 and 23 are resiliently and closely contacted with a wall surface 26 of the heating chamber 2, thereby a space between them is water-tightly sealed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a high frequency heating device such as a microwave oven.

(Prior Art) Conventionally, a type of microwave oven has been provided in which an excitation port of a waveguide and a stirrer fan are arranged at the bottom of a heating chamber. In this type of microwave oven, the heating chamber is partitioned into an upper and lower space by a shelf board for placing food, and a star fan is placed in the space below the space partitioned by the shelf board.

By the way, the shelf board on which food is placed is a single flat piece, so if liquid food is spilled, there is a risk that the liquid food may fall into the star fan chamber below through the gap between the shelf board and the wall of the heating chamber. There is.

In order to prevent this, a method can be considered in which the shelf board is attached to the heating chamber and the gap between its periphery and the wall of the heating chamber is filled with adhesive and sealed. Adhesion work is required, which is time-consuming and requires a long time for the adhesive to harden, resulting in poor work efficiency. Furthermore, when the shelf board is removed during service, the adhesive must be scraped off, resulting in poor serviceability.

Also, attach the packing to the periphery of the shelf board with adhesive,
It is possible to use this packing to close the gap between the periphery of the shelf board and the wall of the heating chamber, but this method also requires adhesive work during the production process, which is time-consuming and hardens the adhesive. This takes a long time and reduces work efficiency. Furthermore, since the packing is attached to the shelf board with adhesive, there are problems with reliability in terms of strength and durability.

In addition, even if this packing is provided, since the above-mentioned shelf board is flat, especially if a large amount of liquid food has been spilled, it will be difficult to prevent leakage from the slight gap between the packing and the wall of the heating chamber. It is also possible that it may spill.

(Problems to be Solved by the Invention) As described above, in a high-frequency heating device in which the bottom of the heating chamber is partitioned with a shelf board and the excitation port of the waveguide, the stirrer fan, etc. are arranged at the bottom, the shelf board It is necessary to prevent food, etc. from spilling through the gap between the heating chamber and the wall of the heating chamber, but each of the above methods has its own problems.

The present invention has been made in view of this problem, and its first purpose is to provide a high-frequency heating device in which shelf boards can be easily attached and detached.

A second object is to provide a high-frequency heating device that allows packing to be easily attached to and removed from shelf boards, has good assembly and disassembly properties, and improves serviceability.

[Structure of the Invention] (Means for Solving the Problems and Their Effects) In order to solve the above problems, the present invention supplies a high frequency wave into the heating chamber from the bottom of the heating chamber, and the bottom of the heating chamber is connected to a shelf. In a high-frequency heating device partitioned by a plate, packing is provided on each of the left and right rear edges of the shelf board to press against the wall surface of the heating chamber and seal between the shelf board and the wall surface of the heating chamber. The front edge is provided with a locking tool that engages with the front opening edge of the heating chamber to rotatably support the shelf board.

According to this invention, the shelf board can be fitted into the heating chamber and taken out by rotating the shelf board around its front edge. Therefore, the shelf board to which the sealing packing is attached can be easily attached and detached.

In the present invention, mounting parts for fitting the packing are provided at each edge of the left and right rear ends of the shelf board, excluding the front end of the shelf board, and this mounting part is pressed against the wall surface of the heating chamber to connect the shelf board and the heating chamber. Packing that seals between the wall and the wall surface is fitted in a removable manner.

According to this invention, since the packing that seals between the shelf board and the wall surface of the heating chamber is the attachment means that fits onto the shelf board, the packing can be easily installed and is reliable. .

In addition, the above-mentioned packing fitting installation is made up of a plurality of protrusions that protrude from each edge of the left and right rear ends of the shelf board, making it easier to fit the packing in compared to the case where the packing fitting is fitted over the entire length of the shelf board. It is.

The packing fitting operation is easier if the protrusions of the part are arranged so that the packing can be inserted between the protrusions by sliding them from the -blade side.

Furthermore, the packing fitting is attached to the protrusion that makes up the part.
If a slope is formed on the end on the side where the packing is inserted to serve as a guide when the packing is inserted, the packing can be easily inserted between the projections.

In the present invention, in a high-frequency heating device that supplies high-frequency waves from the bottom of the heating chamber into the heating chamber and partitions the bottom of the heating chamber with a shelf board, the shelf board has rising portions at the left and right rear edges except for the front end. A sloped surface for outflow is provided on the front edge of the shelf board.

According to this, the liquid spilled on the shelf board stops at the rising part, and does not flow out from the inclined surface of the front edge of the shelf board and enter the bottom space of the heating chamber.

In addition, packing is fitted onto each edge of the left and right rear ends of the shelf board, excluding the front end, to press against the wall surface of the heating chamber and seal between the shelf board and the wall surface of the heating chamber. The action of the packing can more reliably prevent it from entering the bottom space of the heating chamber.

(Embodiment) FIGS. 1 to 7 show a first embodiment of the present invention. Reference numeral 1 in FIG. 1 is the main body of the microwave oven, and within this main body 1 a heating chamber 2 using high frequency waves is formed. As shown in FIG. 2, this heating chamber 2 is provided with a shelf board 4 that partitions (shields in) the bottom space 3 thereof. As shown in FIG. 3, an excitation port 6 of the waveguide 5 is formed at the center of the lower surface of the bottom space 3. The high frequency waves oscillated by the magnetron 7 are guided through the waveguide 5, and the excitation port 6
is radiated into the heating chamber 2. Further, a stirrer fan 7 is installed above the excitation port 6 to uniformly radiate high frequency waves into the heating chamber 2. Further, an opening 12 is formed in the front plate 11 of the main body 1 forming the heating chamber 2, and this opening 12 is closed with a door 13 pivotally attached to the main body 1.

As shown in FIG. 2, the shelf board 4 is formed into a plate shape so as to catch liquid food spilled thereon.

That is, rising portions 14.15° 16 are formed on each side of the left and right sides and rear end of the shelf board 4, respectively. Shelf board 4
An inclined surface 17 that descends forward is formed on the front end side of. Further, the shelf board 4 is provided with a plurality of legs 10, and as shown in FIGS. 2 and 3, each leg 10 supports the heating chamber 2.
is placed on the bottom of the Further, at this time, the lower surface portion of the front end side of the shelf board 4 is joined to and positioned on a flange 18 formed on the front plate 11 of the heating chamber 2.

Furthermore, a plurality of claws 19 are provided protruding from the lower side of the front end of the shelf board 4 as a locking tool that engages with a flange 18 formed on the front plate 11 of the heating chamber 2.

Then, on the shelf board 4, this winter melon 19 is attached to the flange 1 of the front board 11.
8, it can rotate around this.

Furthermore, packings 21, 22.
23 is detachably attached.

The packings 21, 22, and 23 are made of a heat-resistant elastic material such as silicone rubber and are formed into elongated members having a cross-sectional shape as shown in FIG.

The packings 21, 22, and 23 are attached to the base 24 and the tongue piece 2.
5, the tongue piece 25 presses against the wall surface 26 of the heating chamber 2, deforms elastically, and comes into close contact. Also, the installation of packing 21°22.23 is done at base 2.
4 is formed with a groove 28 into which a one-shaped protrusion 27 of a packing fitting section (described later) is fitted, and a protrusion 30 which is fitted into an L-shaped protrusion 29 (also described later).

As shown in FIGS. 6 and 7, the 1-shaped protrusion 27 and the L-shaped protrusion 29 are integrally provided on each rising portion 14, 15, 16 of the shelf board 4, respectively. ing. That is, the 1-shaped protrusion 27 and the L-shaped protrusion 2
The packings 21, 22, and 23 are arranged alternately in a staggered manner while being shifted up and down, and in the meantime, the packings 21, 22, and 23 are installed from one end by sliding the base 24 and inserting it to form the groove 28 and the protrusion 30 as shown in FIG. It is designed to be fitted and installed. In addition, slopes 31 are formed at each end of the 1-shaped protrusion 27 and the L-shaped protrusion 29 on the side where the packings 21, 22, and 23 are inserted to guide the insertion of the packings 21, 22, and 23. There is.

Next, in order to attach the shelf board 4 to the heating chamber 2, first, the seventh
As shown in the figure, the packings 21, 22, and 23 are installed by inserting the base 24 between the 1-shaped projection 27 and the L-shaped projection 29 from one end thereof while sliding the base 24. At this time, it is guided by the slopes 31 of the protrusions 27 and 29, and can be inserted securely. Furthermore, since the shelf board 4 is fitted onto the protrusions 27 and 29 provided partially, rather than over the entire length of each side of the shelf board 4, the frictional force is small, and therefore, it can be slid and fitted smoothly. And each packing 2
1.22.23, the groove 28 and the protrusion 30 in the base 24 fit tightly together as shown in FIG.

Next, attach the claw 19 at the front end of the shelf board 4 to the front board 1 of the heating chamber 2.
1, and locks the front end of this shelf board 4. Then, the shelf board 4 is pushed into the heating chamber 2 by rotating from above into the heating chamber 2 about this front end. At this time of insertion, the tongue piece 2 of the packing 21.22.23
5 is in pressure contact with the wall surface 26 of the heating chamber 2 as shown in FIG.
It slides in the B direction while warping in the A direction. And leg 1
In the installation position shown in FIGS. 2 and 3, where 0 corresponds to the bottom of the heating chamber 2, the shelf 4 is horizontal. In addition, the tongue pieces 25 of the packings 21, 22, and 23 are A(
While warping in the upper) direction, it elastically comes into close contact with the wall surface 26 of the heating chamber 2, thereby creating a tight seal between them.

Note that the L-shaped protrusion 29 is particularly suitable for the packing 21.2.
Since 2.23 is fixed, its packing 21.2
2.23 is reliably prevented from falling off.

In addition, when removing the shelf 4 from the heating chamber 2, the shelf board 4
It is sufficient to lift it upwards centering on the front end. At this time, a frictional force is applied to each packing 21, 22° 23 in the direction B in FIG. 5, but the tongue piece 25 easily deforms and slides. , can be easily removed.

In addition, when removing the packings 21, 22, 23 from the shelf board 4, the packings 21, 22, 23 are not attached to the entire circumference of the shelf board 4, but are only fitted to the protrusions 27, 29.
．． It can be easily removed using the elasticity of 23.

Then, food is placed on the shelf board 4 and high frequency waves are irradiated into the heating chamber 2 to heat and cook the food.

At this time, even if liquid food spills, it can be stopped by the shelf board 4. In particular, since the raised parts 14, 15, and 16 are formed around the shelf board 4, spillage from these sides is prevented as much as possible, and the sides (left and right rear ends) are packed with packing as described above. 21, 22.2
3 is attached, and this tongue piece 25 is attached to A(
The heating chamber 2 is warped from this part because it is in close contact with the wall surface 26 of the heating chamber 2 and sealing the gap between the walls 26 of the heating chamber 2.
To prevent liquid food from spilling into the bottom space 3 of the. Therefore, the inside of the bottom space 3 of the heating chamber 2 is not contaminated, and the excitation port 6 of the waveguide 5 and the star fan 7 installed therein can be protected. Incidentally, a large amount of spilled liquid food comes out through the inclined surface 17 at the front end of the shelf board 4.

By the way, in the above configuration, the shelf board 4 can be installed by simply fitting it into the heating chamber 2 without using an adhesive or the like. Therefore, this installation is easy and can be assembled in a short time. Moreover, since the packings 21, 22, and 23 can be easily attached by simply fitting them onto the protrusions 27, 29 of the shelf board 4, the efficiency of assembly can be improved from this point of view as well. Therefore, it can be manufactured at low cost.

In addition, since no adhesive is used, it is not only easy to attach and detach, but also provides stable installation.
Its installation improves reliability on.

Furthermore, with such a configuration, the shelf board 4 is connected to the heating chamber 2.
Because it can be easily and quickly removed when taking it out of the
Very good service.

FIG. 8 shows a second embodiment of the invention.

In this embodiment, there are two L-shaped protrusions 41°42 on the side of the shelf board 4.
, and the hooks 43 and 44 at the tips thereof are arranged so as to face each other. Correspondingly, a T-shaped protrusion 45 is formed on the base 24 for attaching the packings 21, 22, 23. As shown in FIG. 8, the packings 21, 22, 23 are detachably attached by fitting the T-shaped protrusions 45 into the protrusions 41, 42.

FIG. 9 shows a third embodiment of the invention.

In this embodiment, a 1-shaped protrusion 51 and an L-shaped protrusion 52 are provided on the side of the shelf board 4, and a hook portion 53 at the tip of the L-shaped protrusion 52 is provided.
is oriented in the opposite direction to the one-character-shaped protrusion 51. Correspondingly, grooves 54 and 55 are formed in the base 24 for attaching the packings 21, 22, and 23. And the ninth
As shown in the figure, the packings 21, 22, 23 are detachably attached by fitting the protrusions 51, 52 into the grooves 54, 55.

Note that the present invention is not limited to the above-mentioned embodiments, and various modifications are possible.

[Effects of the Invention] As described above, according to the present invention, it is easy to attach and detach the shelf board to and from the heating chamber, and the packing can be easily attached and detached from the shelf. Furthermore, it is easy to assemble and disassemble, and the serviceability of the high-frequency heating device can be improved.

Further, according to the present invention, the shelf board can be rotated around its front edge to be fitted into the heating chamber and taken out. Therefore, the shelf board to which the sealing packing is attached can be easily attached and detached. In addition, a mounting section for fitting the packing is provided on each edge of the left and right rear edges of the shelf board, excluding the front end of the shelf board, and this mounting section is attached to the heating chamber! 8! Since the packing that presses against the surface and seals between the shelf board and the wall surface of the heating chamber is fitted, the packing can be easily attached to the shelf board and the installation can be performed with high reliability.

If the packing is installed in such a way that the packing can be inserted between the protrusions by sliding it from one side, the lI% of the packing is
! Easier to work with.

Furthermore, the packing fitting is attached to the protrusion that makes up the part.
If the end on the side into which the packing is inserted is formed with a slope for guiding when the packing is inserted, the packing can be inserted reliably and easily between the protrusions.

According to the present invention, liquid spilled on the shelf board stops at the rising part, and does not flow out from the inclined surface part of the front edge of the shelf board and enter the bottom space of the heating chamber.

Further, in the present invention, packings are fitted onto each edge of the left and right rear ends of the shelf board, excluding the front end, to press against the wall surface of the heating chamber and seal between the shelf board and the wall surface of the heating chamber. For example, the action of this packing can reliably prevent it from entering the bottom space of the heating chamber.

[Brief explanation of the drawing]

1 to 7 show a first embodiment of the present invention, FIG. 1 is a perspective view of the microwave oven, FIG. 2 is a side sectional view of the microwave oven, and FIG. 3 is a front view of the microwave oven. Cross section, 4th
Figure and ′! Fig. s5 is a cross-sectional view of the attachment part for attaching the packing to the shelf board, Fig. 6 is a perspective view of the shelf board, Fig. 7 is an exploded perspective view of the shelf board and packing, and Fig. 8 is a second embodiment of the present invention. FIG. 9 is a cross-sectional view of a mounting portion for attaching packing to a shelf board in the third embodiment of the present invention. 1...Main body, 2...Heating chamber, 3...Bottom space, 4
... Shelf board, 14.15.16 ... Rising part, 17.
・・Sloped surface, 18・・Fla, ji, 19・・Claw, 2
1,22.23...Packing, 26...Wall surface, 2
7.29...Protrusion, 31...Slope, 41.42...
-Protrusion, 52...Protrusion, 54.55...Groove. Applicant's agent Patent attorney Takehiko Kaisha No. 355 Figure 4 Figure 5 Figure 21! l Figure 6! s8 figure 9

Claims (8)

[Claims] (1) In a high-frequency heating device that supplies high-frequency waves from the bottom of the heating chamber into the heating chamber and partitions the bottom of the heating chamber with a shelf board, each edge of the left and right rear ends of the shelf board is attached to the wall surface of the heating chamber. A packing is provided to seal between the shelf board and the wall surface of the heating chamber by pressure contact, and a locking member is provided at the front edge of the shelf board to engage with the front opening edge of the heating chamber and support the shelf board in a rotatable manner. A high-frequency heating device characterized by being provided with a tool. (2) In a high-frequency heating device that supplies high-frequency waves from the bottom of the heating chamber into the heating chamber and partitions the bottom of the heating chamber with shelf boards, the shelf boards are fitted with packings at each edge of the left and right rear ends, excluding the front end. A high-frequency heating device characterized in that a mounting portion is provided, and a packing is fitted and attached to the mounting portion for press-contacting the wall surface of the heating chamber and sealing between the shelf board and the wall surface of the heating chamber. (3) The high-frequency heating device according to claim 2, wherein the packing fitting attachment portion is formed from a plurality of protrusions that respectively protrude from the left and right rear edges of the shelf board. (4) The high-frequency heating device according to claim 3, wherein the plurality of protrusions forming the packing fitting attachment portion are comprised of I-shaped protrusions and L-shaped protrusions. . (5) The high-frequency heating device according to claim 4, wherein each of the protrusions of the packing fitting attachment portion is arranged so that the packing can be inserted between the protrusions by sliding from one of the protrusions. (6) The high-frequency heating according to claim 5, characterized in that the protrusion constituting the attachment part for fitting the packing has a sloped surface for guiding when inserting the packing at the end thereof on the side where the packing is inserted. Device. (7) In a high-frequency heating device that supplies high-frequency waves from the bottom of the heating chamber into the heating chamber and partitions the bottom of the heating chamber with a shelf board, the shelf board has rising portions at the left and right rear edges except for the front end. , A high-frequency heating device characterized in that a front end edge of a shelf board is provided with an inclined surface for outflow. (8) The above-mentioned shelf board is attached to each edge of the left and right rear ends, excluding the front end, by fitting packing that presses against the wall surface of the heating chamber and seals between the shelf board and the wall surface of the heating chamber. The high frequency heating device according to claim 7, characterized in that: