CN1108375A

CN1108375A - Microwave flow control apparatus for microwave oven

Info

Publication number: CN1108375A
Application number: CN94117130A
Authority: CN
Inventors: 姜亨周
Original assignee: Gold Star Co Ltd
Current assignee: LG Electronics Inc
Priority date: 1993-10-13
Filing date: 1994-10-13
Publication date: 1995-09-13
Also published as: JPH07211449A; KR200141222Y1; JP2780936B2; KR950012088U

Abstract

The invention relates to a device which can determine the flow direction of microwaves generated by a microwave oven; and due to the device, microwaves can flow into the openings of the upper part and/ or the lower part of the cavity of the microwave oven. The device comprises a side wall positioned at the cavity of the microwave oven; wherein, the microwave oven comprises an upper microwave opening and a lower microwave opening, which are respectively arranged at the upper and the lower part of the microwave oven. The device also comprises microwave wave guide tubes which are arranged at the positions of the upper microwave opening and the lower microwave opening and which can be used for providing routes and guiding the flow direction for the microwaves generated at magnet-controlled tubes, and a microwave flow-direction controller which can be used for selectively opening and/or closing the microwave flow according to the types of to-be-baked food.

Description

Microwave flow control apparatus for microwave oven

The microwave that the present invention relates to micro-wave oven is supplied with, the flow control apparatus for microwave that particularly can guide microwave to flow to, and this device can be distributed to cavity top and/or bottom to microwave according to food species effectively.

Usually, micro-wave oven is divided into two kinds of rotating disk type and bottom supply-types according to the microwave supply mode.

Below, explain conventional rotating disk type micro-wave oven.

Referring to Fig. 1, it comprises a microwave plumbing 2 that is positioned on microwave oven cavity 1 sidewall.On the sidewall of cavity 1, form a microwave mouth 3.Here, the food 8 that is placed on the rotating disc 6 is resulted from magnetron 4, through the microwave baking of microwave mouth 3.

Simultaneously, conventional bottom supply-type micro-wave oven is illustrated in Fig. 2, and it comprises the microwave plumbing 2 that extends to the bottom from cavity 1 side-walls.One of the microwave plumbing 2 of cavity 1 bottom in advance part have a microwave mouth 3.Magnetron 4 produces microwave, by rotable antenna 9 dispersion microwaves, cooking food.

Yet, in the micro-wave oven of routine,, make food in micro-wave oven, can not evenly toast because the microwave of a side flow direction is distributed to the difference of a caused heating in top that is predetermined and/or bottom of cavity.

So, in the micro-wave oven of rotating disk type, because microwave comes from the upper part and/or the lower part of cavity, the surface that the food of not adding a cover contacts with air is at first by microwave baking, so that the moisture content in the food just was evaporated before food is by normal baking, even burned food.Also have, in the micro-wave oven of bottom supply-type, the inside of food is burnt by baking at first.In order to address these problems, often use an additional pottery plate, but producing cost is very expensive.

Therefore, purpose of the present invention just provides a flow control apparatus for microwave, and it results from the flow direction that magnetron can be controlled microwave, makes microwave energy according to food species, enters the top and/or the bottom of cavity.

In order to realize purpose of the present invention, this micro-wave oven comprises a sidewall in microwave oven cavity.This micro-wave oven comprises top microwave mouth and bottom microwave mouth, and their each comfortable upper and lower parts form.A microwave catheter is arranged on top microwave mouth and microwave mouth place, bottom, and being used for provides a path for the flow direction of microwave, and the microwave that guiding simultaneously results from magnetron flows to; And flow control apparatus for microwave, according to the food that will toast, selectively open and/or close microwave stream.

Fig. 1 is the cross section schematic diagram of a conventional rotating disk type micro-wave oven.

Fig. 2 is the cross section schematic diagram of a conventional bottom supply-type micro-wave oven.

Fig. 3 is a vertical direction tangent plane schematic diagram of showing the inside part of micro-wave oven according to the present invention.

Fig. 4 is a perspective view showing the inside part of micro-wave oven according to the present invention.

Fig. 5 shows that according to the present invention the microwave of micro-wave oven flows to the cross section schematic diagram of path opening/closing device.

Fig. 6 shows that according to the present invention the microwave of micro-wave oven flows to the cross section schematic diagram of path opening/closing device structure.

Referring to Fig. 3, it is by the present invention, the cross section schematic diagram of the microwave oven that provides.Fig. 4 is a perspective view, has showed microwave oven cavity the inside part, and Fig. 5 and Fig. 6 are respectively operation schematic diagram and the cross section schematic diagrames that flows to the path opening/closing device according to micro-wave oven microwave of the present invention.

There, comprise a top microwave mouth 21 and a bottom microwave mouth 22 according to the flow control apparatus for microwave of micro-wave oven of the present invention, they form on the sidewall of microwave oven cavity 1.Microwave plumbing 30 is positioned at top microwave mouth 21 and bottom microwave mouth 22 places, and the microwave that results from magnetron 4 in order to guiding flows to.A plurality of microwaves flow to route control device and are used for optionally opening and/or closing microwave and flow to

path

30a and 30b, make the requirement that microwave energy will toast according to food, uniform distribution on top microwave mouth 21 in cavity of microwave oven 1 and the bottom microwave mouth 22.

Flow control apparatus for microwave comprises a plurality of rotation stop discs 41, and they are distributed in microwave respectively and flow on path 30a and the 30b.A motor 42 is in order to drive rotation stop disc 41 half-twists.Here, motor 42 is fixed on the outer surface of microwave plumbing 30 by support 43.Motor 42 can automatically make rotation stop disc 41 between top microwave mouth 21 and bottom microwave mouth 22 by the roasting food requirement, makes the decision-making of microwave flow distribution direction.

Simultaneously, evenly toasted in all sides, may on a pre-selected locations of the sidewall of cavity 1, an additional microwave mouth 23 be set in order further to make food.

Here, suggestion preferably is provided with an additional microwave mouth 23 at least.

Below, the operation and the effect of the flow control apparatus for microwave of explanation micro-wave oven.

Beginning, when the user wishes to toast the thing of a lot of liquid, the operation of the first and second Microwave Path opening/closing devices by microwave plumbing 30 is turned off microwave and is flowed to path 30a, simultaneously, open microwave flow path 30b, make the microwave result from magnetron 4 microwave of flowing through flow to path 30b, so the bottom surface sections of cooking food at first, thereby avoided the excessive evaporation of liquid effectively, and further burnt.

When baking did not comprise the food of many liquid, when just needing directly to heat, the microwave that rotation stop disc 41 is closed microwave plumbing 30 flowed to path 30b.Simultaneously, the operation that flows to the path opening/closing device by first microwave is opened microwave and is flowed to path 30a.So by top microwave mouth 21, most of microwave flows into the top of cavity 1, thus even underground heat cooking food.

The flow control apparatus for microwave that is used for micro-wave oven is by making the top microwave mouth and/or the bottom microwave mouth of microwave selective ground inflow cavity, even effectively cooking food.So prevented the baking of single side face by the pervaporation that stops soup, owing to do not need to use additional ceramics tray, thereby the cost of micro-wave oven reduced.

Claims

1, the flow control apparatus for microwave of micro-wave oven comprises:

Be positioned at the sidewall of microwave oven cavity, it comprises top microwave mouth and the bottom microwave mouth that results from the micro-wave oven top and the bottom separately;

Microwave plumbing is positioned at top microwave mouth and microwave mouth place, bottom, is used to provide the microwave path that flows to and the flow direction that guides the microwave that results from magnetron;

Microwave stream is optionally opened and/or closed to flow control apparatus for microwave according to the food species that will toast.

2, the device in the claim 1, wherein be positioned at the described flow control apparatus for microwave that microwave flows to a pre-selected locations in path, comprise that first micro-wave oven flows to the path and opens and/or close device and second microwave and flow to the path and open and/or close device, they are used to the microwave stream that opening/closing optionally results from magnetron.

3, the device in the claim 2, wherein said first microwave flow to the path and open and/or close device and second microwave and flow to the path and open and/or close device and comprise a plurality of rotation stop discs, and they are positioned at microwave and flow to the place, path; And motor in order to driving rotation stop disc.

4, the device in the claim 1, wherein said top microwave mouth comprises a microwave mouth that is positioned at its underpart at least.