CN100456899C

CN100456899C - Structure of preventing microwave leakage in casing type microwave oven

Info

Publication number: CN100456899C
Application number: CNB2003101073868A
Authority: CN
Inventors: 金寿换
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2003-12-12
Filing date: 2003-12-12
Publication date: 2009-01-28
Anticipated expiration: 2023-12-12
Also published as: CN1627868A

Abstract

The present invention provides a structure of preventing microwave leakage in a casing type microwave oven. The present invention comprises a heating chamber of a casing type microwave oven, wherein the upper end of a door used for opening and closing the heating chamber extends backwards to be provided with an extension blocking part, a front panel at the front end around the heating chamber is provided with a groove blocking part, the groove blocking part and the extension blocking part are tightly attached, and the extension blocking part and the groove blocking part are transversely arranged, which is good for leading the upper part of the heating chamber to be thoroughly covered. At the upper part of the front panel, the groove blocking part forms a difference section shape. The present invention has the advantages that in the structure, the extension blocking part and the groove blocking part prevent a pin from being inserted into the heating chamber from the outside, and prevent microwaves from leaking along the inserted pin during operation of the microwave oven; tests of the pin can be fully satisfied; simultaneously, the trust degree for preventing microwaves from leaking is improved.

Description

The microwave leakage of hood type microwave oven prevents structure

Technical field

The invention relates to hood type microwave oven, prevent that particularly the slit that pin passes through between door and the front panel from inserting, the microwave that prevents to supply to heating chamber inside thus prevents structure along the microwave leakage of the hood type microwave oven that pin leaks.

Background technology

Illustrated general hood type microwave oven among Fig. 1, hood type microwave oven also have and can be discharged to outside function to the cigarette that produces in the baking box of below except that the function of utilizing the internal heat heat food is arranged.

As shown in Figure 1, the front of hood type microwave oven is provided with the door 2 that opens and closes heating chamber (not shown), between the top of door 2 and shell 4, be provided with air discharge grille 6, make air flows with the electric component of cooling, perhaps arranging to outdoor behind the cigarette process microwave oven inside that produces in the baking box of bottom in the microwave oven inner heat.

Control part 7 is arranged on door 2 sides, and in order to import the signal of running microwave oven, is provided with various input units; Inform the user for present status, be provided with display part microwave oven.At the inner electric control chamber that is provided with of the microwave oven at control part 7 rears with certain space.Be provided with in the electric control chamber to heating chamber and supply with the magnetron of microwave, import electric component such as high-tension high-tension transformer to magnetron.After the electric component running, temperature can raise, and runs well in order to make microwave oven, and electric component will have the space of abundant heat radiation.

Air can be come in and gone out by air discharge grille 6, and the air that therefore cools off the electric control chamber heat generating components can flow into inside.If be arranged on the exhaust motor parts running of hood type microwave oven upper rear end, the air of below (air such as hot gas that produces at baking box and cigarette) flow into inside by the ostium of microwave oven bottom surface.Behind the passage of leaked-in air through microwave oven inside, to the front, perhaps by the ostium leaked-in air of microwave oven bottom surface, according to the setting device of exhaust motor parts 8, row is to microwave oven top or rear by air discharge grille 6 rows.

Have a pair of brace 6a that rearward prolongs above the air discharge grille 6, brace 6a is connected by a pair of screw S under the state of the bottom surface insertion of being close to shell 4, is supported on the shell.

As said structure, when utilizing a pair of screw S to connect air discharge grille 6, the component number that needs increases and the assembly project complexity, therefore nearest air discharge grille 6 elasticity combinations.Both, air discharge grille 6 and shell had not needed other mechanical parts such as screw, were connected by self architectural characteristic, air discharge grille 6 is installed oversimplified.But the air discharge grille 6 of this moment has the worry that is broken away from from the microwave oven body easily by external force arbitrarily.

As shown in Figure 2, pulling down under the state of air discharge grille, heating chamber is kept by the door closing state.Can not complete closed between the front panel 3 of heating chamber front and the door 2 but in fact be located at, front panel 3 and door 2 have the slit.Therefore pin P might be inserted into heating chamber 5 inside from the outside by such slit.

As above-mentioned structure, if the pin P of metal material is inserted into heating chamber 5 inside, just might be at the microwave of heating chamber 5 inside along above-mentioned pin to external leaks.If microwave leakage is influential to human body to outside, so the microwave leakage worry, be fatal to the credit worthiness of product.Whether test pin P is called the pin test as the above-mentioned process that is inserted into heating chamber inside, and some national formulation standard, does not allow pin to insert.

Summary of the invention

Prevent that for solving the problem that exists in the above-mentioned technology, the purpose of this invention is to provide pin is inserted into heating chamber inside from the outside, can prevent that thus the microwave leakage of the hood type microwave oven of microwave leakage from preventing structure.

To achieve these goals, the microwave leakage that technical scheme of the present invention provides a kind of hood type microwave oven prevents structure, include heating chamber, wherein: rearward prolong in the upper end of the door that opens and closes heating chamber and to be provided with the blocking-up extension, on heating chamber the place ahead, be provided with front panel, be recessed to form the blocking-up groove location on the part of plate in front, and be adjacent to mutually with the blocking-up extension, block extension and blocking-up groove location horizontally set, be beneficial to all hide the top, the place ahead of heating chamber.

Described blocking-up groove location is the plate top section of being set to difference shape in front.

Effect of the present invention is that the blocking-up extension prevents that with the blocking-up groove location pin is inserted into heating chamber inside from the outside in this structure, prevent that microwave from leaking along the pin that inserts in the microwave oven running, fully satisfy the pin test, meanwhile improve the degree of belief that prevents microwave leakage.

Description of drawings

Fig. 1 is the structural perspective of general hood type microwave oven;

Fig. 2 is the part sectioned view of general hood type microwave oven;

Fig. 3 is the partial perspective view of hood type microwave oven of the present invention;

Fig. 4 is the part sectioned view of hood type microwave oven of the present invention.

Among the figure:

10: door 12: the blocking-up extension

20: front panel 22: the blocking-up groove location

30: heating chamber

Embodiment

Reach embodiment in conjunction with the accompanying drawings the microwave leakage of hood type microwave oven of the present invention is prevented that structure is illustrated.

As shown in Figure 3, Figure 4, according to the blocking-up extension 12 that rearward prolongs is arranged above the door for microwave oven 10 of the present invention, blocking-up extension 12 stops that pin is inserted into heating chamber inside from the outside, and in illustrated embodiment, horizontally set hides the top of whole heating chamber 30.

Front panel 20 is located at above heating chamber 30 the place aheads, and is recessed to form blocking-up groove location 22 on the part of plate 20 in front, is close to blocking-up extension 12.Blocking-up groove location 22 is that the 24 depression positions, front of plate 20 in front are provided with, and corresponding with the length of blocking-up extension 12.

In illustrated embodiment, blocking-up groove location 22 is segment difference sections of the section difference shape of plate 20 upper ends depression in front.The shape that blocking-up groove location 22 according to the present invention is set to cave in is close to the inside with blocking-up extension 12, stops that thus pin is inserted into heating chamber 30 inside from the outside.Blocking-up extension 12 also can be located on any one parts in the door assembling parts that constitutes door.

In Fig. 4, door 10 is closed under the situation of heating chamber 30, if door 10 is closed, the blocking-up extension 12 of door 10 enters into blocking-up groove location 22 inside of front panel 20, forms the state of being close to.In this state, the slit between door 10 and the front panel 20 is by 12 blocking-up of blocking-up extension.Even so from the outside by inserting pin between door 10 and the front panel 20, pin can not enter into the inside of heating chamber 30.Therefore according to the present invention, can prevent the phenomenon of microwave leakage fully owing to insert pin.

In the illustrated embodiment, blocking-up extension 12 and the formation above door 10 and front panel 20 of blocking-up groove location 22.But, blocking-up extension 12 and blocking-up groove location 22, not only can be formed on door 10 and front panel 20 above, but also can be formed on the lateral surface (hinge axis opposite sides) of door and the corresponding therewith front panel.

In the illustrated embodiment, the present invention describes by hood type microwave oven, but such the technology of the present invention thought also can be useful on the general microwave oven.

In the scope of the basic fundamental thought of the invention described above, the technical staff with industry general knowledge has a lot of distortion, all explains for the basis in the patent scope of asking for protection.

Claims

1, a kind of microwave leakage of hood type microwave oven prevents structure, this hood type microwave oven includes heating chamber, it is characterized in that: rearward prolong to be provided with in the upper end of the door (10) that opens and closes heating chamber and block extension (12), be provided with front panel (20) above the place ahead at heating chamber (30), be recessed to form blocking-up groove location (22) in front on the part of plate (20), and with the blocking-up extension (12) be adjacent to mutually, block extension (12) and blocking-up groove location (22) horizontally set, be beneficial to all hide the top, the place ahead of heating chamber.

2, the microwave leakage of hood type microwave oven according to claim 1 prevents structure, it is characterized in that: described blocking-up groove location (22) is plate (20) the top section of being set to difference shape in front.