CN1273775C

CN1273775C - Embedded type microwave oven

Info

Publication number: CN1273775C
Application number: CN 02153253
Authority: CN
Inventors: 吴圭镐
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2002-11-26
Filing date: 2002-11-26
Publication date: 2006-09-06
Anticipated expiration: 2022-11-26
Also published as: CN1502875A

Abstract

The present invention discloses an embedded type microwave oven which comprises an air sucking grid, an air exhaust motor unit, an electronic accessory chamber, a lateral air flow passage, a bottom air flow passage, an air sucking structure, an air exhaust structure and an air exhaust grid, wherein the air sucking grid is formed at the upper end of a front panel; the air exhaust motor unit is arranged at one side of an upper panel of a heating chamber; the electronic accessory chamber is arranged on the upper panel of the heating chamber; the lateral air flow passage is formed in the heating chamber between the lateral surface corresponding to the lateral surface on which the air exhaust motor unit is arranged and a casing of the microwave oven; the bottom air flow passage is formed between a bottom panel and a lower panel of the heating chamber; the air sucking structure is formed on the lateral panel of the heating chamber, and the lateral air flow passage is formed on the lateral panel; the air exhaust structure is formed on the lateral surface corresponding to the lateral surface on which the air sucking structure is arranged; the air exhaust grid is arranged at the lower end of the front panel and exhausts airflow passing through the bottom air flow passage to the outside of the microwave oven. The present invention only uses one air exhaust motor unit to generate the airflow in the microwave oven and has the advantages of noise reduction, production cost reduction, etc.

Description

Built-in microwave oven

Technical field

The present invention relates to micro-wave oven, especially only utilize an exhaust motor unit, cool electronic accessory chamber and at the inner built-in microwave oven that forms air circulation of heating clamber.

Background technology

Micro-wave oven is to utilize electric current to produce microwave, and with the surface of microwave irradiation to heating object, heats the device of article.Usually can be divided into the top that places the general micro-wave oven that uses on the desktop and be arranged on gas furnace, the hood type microwave oven that possesses degassing function.

Along with development of times, rise day by day kitchen articles such as gas furnace or kraut refrigerator are designed to damascene structures, make between household appliances and the kitchen furniture and coordinate mutually, give whole aesthetic feeling.Micro-wave oven also just is designed to embedded, i.e. built-in microwave oven.

Usually, the most basic mode of heating of micro-wave oven is with the inside of microwave feeds to heating clamber, the irradiation heating object.And this mode of heating only possesses single heat characteristic, recently in the inside of micro-wave oven built-in various heaters as additional other heating sources.In order to improve heating-up temperature and to make food surface become black, built-in Halogen lamp LED in the micro-wave oven.The Halogen lamp LED operated by rotary motion on place the heating clamber inside of food and below, the inside that the heat energy and the luminous energy of its generation are injected heating clamber, thereby heated food promptly.Such heating source is set,,, effective cooling device must be set in order to prevent the damage of other accessories of micro-wave oven that high temperature causes though can improve conditioning effect at short time utilization high temperature heated food.

Below, the structure to the built-in microwave oven of prior art describes in conjunction with the accompanying drawings:

As depicted in figs. 1 and 2, the side at the heating clamber 2 of micro-wave oven is the electronic components chamber 4 that accessories such as magnetron 4a, high-tension transformer 4b, electric capacity are set.The rear side of electronic components chamber 4 is provided with the cooling fan unit 6 that electronic components is had thermolysis.Upside at the micro-wave oven front panel is provided with the air intake grill 8 that extraneous air is sucked into micro-wave oven inside, and downside is provided with the air in the micro-wave oven internal flow is discharged to outside exhaust grille 10.On heating clamber 2, be provided with and make the exhaust motor unit 12 of air in the micro-wave oven internal flow, utilize it to come to suck extraneous air by air intake grill 8, and will be sent to downside in the air of the micro-wave oven internal flow side by heating clamber, be discharged on the exhaust grille 10.

The micro-wave oven that possesses said structure by the driving of exhaust motor unit 12, produces air stream in the inside of micro-wave oven.Promptly suck extraneous air, and inhaled air is delivered to down the rear flank by a side of heating clamber, discharge by exhaust grille 10 by exhaust motor unit 12 by air intake grill 8.And, enter into inner air through air intake grill 8, after supercooling fan unit 6 enters the inside of electronic components chamber 4, in electronic components chamber 4, flow the cool electronic accessory through the top of cavity.And portion of air wherein enters 2 inside of heating clamber and outputs to heating clamber 2 downsides with the air that contains steam, is discharged by exhaust grille 10.

But there is following problem in the built-in microwave oven that possesses said structure: for the inside at micro-wave oven forms air stream, and will use a plurality of fan units such as cooling fan unit 6, exhaust motor unit 12.Thus, when micro-wave oven was worked, a plurality of fan units drove simultaneously, produced very big noise.And, owing to adopt a plurality of fan units, not only improved production cost, and the assembly technology complexity.

Summary of the invention

Technical problem to be solved by this invention is to provide exhaust motor unit of a kind of employing to flow at the inner air that produces of micro-wave oven, thereby can reduce noise, minimizing production cost, and the built-in microwave oven of raising capacity usage ratio.

In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of built-in microwave oven comprises: be arranged on the upper end of micro-wave oven front panel, so that extraneous air is sucked into the air intake grill of micro-wave oven inside; Be arranged on a side of heating clamber top panel, will guide to the exhaust motor unit of the longitudinal direction of heating clamber top panel by the extraneous air that air intake grill sucks; In order to utilize air that it is cooled off, and be arranged on the electronic components chamber of heating clamber top panel by exhaust motor unit guiding; For the air that makes the cool electronic accessory passes through, and be formed at heating clamber side panel relative and the side air flow channel between the microwave oven shell with the side that the exhaust motor unit is set; Between the lower panel of the bottom panel of heating clamber and micro-wave oven, form, and the bottom surface air flow passage that communicates with the side air flow channel; For making the air stream that guides to the side by the exhaust motor unit enter into the inside of heating clamber, and be arranged on arbitrary air suction structure of heating clamber outer peripheral face; For making the outside that air outputs to heating clamber that is inhaled into after the inner loop of heating clamber, and be arranged on exhaust structure on the heating clamber side panel that described exhaust motor unit is installed; Arrange the lower end that is arranged on front panel laterally for air is flowed, and the exhaust grille that communicates with described bottom surface air flow passage constitutes.

Built-in microwave oven of the present invention also can be: be arranged on the upper end of micro-wave oven front panel, so that extraneous air is sucked into the air intake grill of micro-wave oven inside; Be arranged on a side of heating clamber top panel, will guide to the exhaust motor unit of the longitudinal direction of heating clamber top panel by the extraneous air that air intake grill sucks; In order to utilize air that it is cooled off, and be arranged on the electronic components chamber of heating clamber side panel by exhaust motor unit guiding; And the side panel of heating clamber of electronic components and the side air flow channel between the microwave oven shell are set; Between the bottom surface of heating clamber and lower panel, form, and the bottom surface air flow passage that communicates with the side air flow channel; For making the air stream that guides to the side by the exhaust motor unit enter into the inside of heating clamber, and be arranged on arbitrary air suction structure of heating clamber outer peripheral face; For making the outside that air outputs to heating clamber that is inhaled into after the inner loop of heating clamber, and be arranged on exhaust structure on the heating clamber side panel that described exhaust motor unit is installed; Arrange the lower end that is arranged on front panel laterally for air is flowed, and the exhaust grille that communicates with described bottom surface air flow passage constitutes.

Described air suction structure be arranged on the heating clamber side panel of the opposite face that described exhaust motor unit side is installed or heating clamber above.

The invention has the beneficial effects as follows and only adopt an exhaust motor unit to produce air stream, have the advantage that reduces noise, minimizing production cost, raising capacity usage ratio etc. in micro-wave oven inside.

Description of drawings

Fig. 1 is the built-in microwave oven bottom isometric view of prior art design.

Fig. 2 is the built-in microwave oven air glide path sectional drawing of prior art design.

Fig. 3 is the built-in microwave oven three-dimensional structure diagram that the present invention designs.

Fig. 4 is another embodiment three-dimensional structure diagram of built-in microwave oven that the present invention designs.

Among the figure, 22: heating clamber; 28: front panel; 32: lower panel; 40: air intake grill; 42: exhaust grille; 44: the exhaust motor unit; 46: the electronic components chamber; 48: air suction structure; 50: exhaust structure; 60: the side air flow channel; 62: the back air flow passage; 64: the bottom surface air flow passage.

The specific embodiment

Be described in further detail below in conjunction with the built-in microwave oven of the drawings and specific embodiments the present invention design: as shown in Figure 3, the built-in microwave oven of the present invention's design by the heating clamber 22 of heating article, form heating clamber 22 fronts front panel 28, constitute at the lower panel 32 that forms certain flowing space between heating clamber 22 and the bottom of heating chamber plate 26, the baffle plate 30 that between heating clamber 22 and heating clamber rear board 25, forms certain space.Above-mentioned micro-wave oven comprises that also formation micro-wave oven two sides and top shell (omitting among the figure) together constitute Embedded micro-wave oven.

In the upper end of micro-wave oven front panel 28, be provided with the air intake grill 40 that makes extraneous air be sucked into the micro-wave oven inner loop.In the lower end of micro-wave oven front panel 28, be provided with the air in the micro-wave oven inner loop is discharged to outside exhaust grille 42.

By vertically being provided with exhaust motor unit 44, utilize the suction of exhaust motor unit 44 in a side of heating clamber top panel 23 (right flank among the figure), suck the required air of cooled microwave furnace interior from the outside by air intake grill 40.And, possess the electronic components chamber 46 of accessories (being designated hereinafter simply as electronic components) such as the magnetron that produces microwave, high-tension transformer, electric capacity are set at heating clamber top panel 23.The air stream that the outside air that the electronic components utilization of 46 inside, electronic components chamber sucks by air intake grill 40 forms can cool off fully.

And, between the heating clamber side panel 24 of the side of exhaust motor unit 44 and opposite side and microwave oven shell, formed the side air flow channel 60 of air stream from the downward side shifting of upside; Between bottom of heating chamber plate 26 and lower panel 32, form the bottom surface air flow passage 64 that air drifts moving.Bottom surface air flow passage 64 communicates with exhaust grille 42, and the outside that exhaust grille 42 is discharged to micro-wave oven is crossed in the circulation of air of flowing through bottom surface air flow passage 64.And move in the bottom surface air flow passage 64 by side air flow channel 60 by the part that exhaust motor unit 44 guides to the air stream of heating clamber top panel 23 side directions, another part air stream moves in the back air communication channel 62 that forms between heating clamber back 25 and the baffle plate 30.

On heating clamber side panel 24, formed the portion of air that moves at side air passage 60 and flow to the air suction structure 48 that forms by a plurality of passages into heating clamber 22 inside.Accordingly on the heating clamber side panel 24a of side that forms described air suction structure 48 and opposite side, that is, formed the exhaust structure 50 that constitutes by a plurality of passages that the air that enters into heating clamber inside by air suction structure 48 outputs to heating clamber 22 outsides on the heating clamber side panel 24a of exhaust motor unit 44 sides being provided with.

Thus, the portion of air that sucks by air intake grill 40 is entered the inside of heating clamber 22 by air suction structure 48.And after entering heating clamber 22, air combines with the steam of inside in heating clamber 22 inner loop, and afterwards, the exhaust structure 50 that forms by heating clamber side panel 24a outputs to the outside of heating clamber 22 again.In sum, the air that can utilize a part to flow into micro-wave oven inside is removed the steam of heating clamber 22 inside, thereby the door that can prevent heating clamber 22 is gone up dewfall.And, because the temperature of the air of exhaust structure 50 outputs is higher relatively,, will cause user's discomfort if directly be discharged to the micro-wave oven outside by exhaust grille 42.Therefore, in the present invention, to utilize exhaust motor unit 44 in the micro-wave oven inner loop once more from the high temperature air of heating clamber 22 outputs by exhaust structure 50, and mix with the lower air of the relative temperature that enters by air intake grill 40, through side air flow channel 60 and bottom surface air flow passage 64, discharge by exhaust grille 42 at last.

The course of work to the built-in microwave oven of the present invention design further specifies with reference to the accompanying drawings:

As shown in Figure 3, be vertically arranged with exhaust motor unit 44, after the startup, produce and suck the suction of extraneous air, and be sent on the air intake grill 40 that is arranged on front panel 28 upper ends to micro-wave oven inside at heating clamber top panel 23.After the extraneous air that is sucked by air intake grill 40 flow into micro-wave oven, 23 formed air stream on heating clamber 22.

To the mobile air stream of side direction (left side of drawing), enter into the electronic components chamber 46 that is arranged on above the heating clamber 22, fully the cool electronic accessory at heating clamber top panel 23.And, most of air of above-mentioned tempering air stream moves to the side air flow channel 60 that forms between the shell of heating clamber side panel 24 and micro-wave oven, and portion of air moves to the back air flow passage 62 that forms between heating clamber rear board 25 and the baffle plate 30.Move to the bottom surface air flow passage 64 that forms between bottom of heating chamber plate 26 and the lower panel 32 at the air stream behind the cool electronic accessory chamber 46 through back air flow passage 62 and side air flow channel 60.

And, after circulating in the inside that the air suction structure 48 that portion of air by side air flow channel 60 forms by heating clamber side panel 24 enters heating clamber 22, again by being formed on the outside that exhaust structure 50 on the heating clamber side panel 24a outputs to heating clamber 22.As mentioned above, in heating clamber 22 inner loop, and the temperature of the air that combines with steam in heating clamber stream is higher, if directly be discharged to the micro-wave oven outside, will cause user's discomfort, therefore, must mix with other air stream, just can be discharged to the micro-wave oven outside after the reduction temperature.

So the air stream that outputs to heating clamber 22 side 24a by exhaust structure 50 mixes with other air stream, moves to bottom surface air flow passage 64 by side air flow channel 60 and back air flow passage 62.The outside that exhaust grille 42 that 28 lower ends, front form outputs to micro-wave oven is crossed in the circulation of air that arrives bottom surface air flow passage 64.

In embodiment as shown in Figure 3, air suction structure 48 is arranged on the heating clamber side panel 24a of side that exhaust motor unit 44 is installed and opposite side.Described exhaust structure 50 is arranged on the heating clamber side panel 24a that exhaust motor unit 44 is installed.As long as owing to can come in and go out in 22 inside of heating clamber in the inner airborne part that moves of micro-wave oven, therefore, described air suction structure 48 and exhaust structure 50 also can be arranged on the side 24 of heating clamber, 24a top 23 or back 25 in any position.

Because it is through heating clamber top panel 23 that described exhaust motor unit 44 is drawn into most of air stream of micro-wave oven inside, go up the air stream of the side air flow channel 60 that forms by the heating clamber side panel 24a relative with the side that exhaust motor unit 44 is installed, therefore, described air suction structure 48 is preferably disposed on heating clamber side panel 24a or the heating clamber top panel 23 relative with the side that exhaust motor unit 44 is installed, and described exhaust structure 50 is preferably disposed on the side of the heating clamber 22 that exhaust motor unit 44 is installed.

Below with reference to Fig. 4, another embodiment of the built-in microwave oven of the present invention design is described:

In the embodiment shown in Fig. 3, electronic components chamber 46 has been arranged on heating clamber top panel 23, and among the embodiment in Fig. 4, electronic components chamber 46 has been arranged on the right flank 124 of heating clamber 122.

As shown in Figure 4, most of air stream that exhaust motor unit 144 forms is through heating clamber top panel 123, moves to the air stream of the side air flow channel 160 that forms on the heating clamber side panel 124 relative with the side that exhaust motor unit 144 is installed.In the present embodiment, in fact, side air flow channel 160 is exactly electronic components chamber 146.Hence one can see that, and when electronic components chamber 146 being arranged on the side of heating clamber 122, electronic components chamber 146 will join by the heating clamber side panel 124 relative with the side that exhaust motor unit 144 is installed.

Enter the inside and steam interflow of heating clamber 122 by air suction structure 148 after, the high temperature air stream that outputs to heating clamber 122 outsides by the exhaust structure 150 on the heating clamber side panel 124a with other (utilize the exhaust motor unit by air intake grill 140 suck air) air flows and mixes, reduce temperature, move to bottom surface air flow passage 164 by side air flow channel 160 again, be discharged to the outside of micro-wave oven at last by exhaust grille 142.

Front panel 128 among Fig. 4, bottom panel 126, lower panel 132, rear board 125, baffle plate 130, back air communication channel 162 are identical with the effect of Fig. 3.

This shows that major technique thinking of the present invention is only to adopt an exhaust motor unit in the inner air stream cool electronic accessory chamber that produces of micro-wave oven, and, utilize the portion of air stream of above-mentioned air stream to remove the steam of heating clamber inside.

Knowledgeable people in the technical scope under the present invention can bring some new variations to the present invention, but this should explain within interest field of the present invention all.

Claims

1, a kind of built-in microwave oven comprises: heating clamber, front panel, air intake grill, exhaust grille, electronic components chamber is characterized in that in the upper end of micro-wave oven front panel (28) air intake grill (40) being set; Side on heating clamber (22) is provided with the exhaust motor unit (44) that the extraneous air that will suck by air intake grill (40) guides to the longitudinal direction above the heating clamber; The top panel of heating clamber (23) is provided with electronic components chamber (46); The side air flow channel (60) that between the side panel (24) of the relative heating clamber in the side of exhaust motor unit (44) and microwave oven shell, forms; Between the lower panel (32) of the bottom panel (26) of heating clamber and micro-wave oven, form, and the bottom surface air flow passage (64) that communicates with side air flow channel (60); Air suction structure (48) in arbitrary setting of the outer peripheral face of heating clamber; Be arranged on the exhaust structure (50) on the heating clamber side panel (24a) that described exhaust motor unit (44) is installed; Be arranged on the lower end of front panel (28), and the exhaust grille (42) that communicates with described bottom surface air flow passage (64).

2, built-in microwave oven according to claim 1, it is characterized in that described air suction structure (48) be arranged on heating clamber (22) above.

3, built-in microwave oven according to claim 1 is characterized in that described air suction structure (48) is arranged on the heating clamber side panel (24) relative with the side that described exhaust motor group (44) is installed.

4, a kind of built-in microwave oven comprises: heating clamber, front panel, air intake grill, exhaust grille, electronic components chamber is characterized in that in the upper end of micro-wave oven front panel (128) air intake grill (140) being set; Side on heating clamber (122) is provided with the exhaust motor unit (144) that the extraneous air that will suck by air intake grill (140) guides to the longitudinal direction above the heating clamber; The side of heating clamber is provided with electronic components chamber (146); And be provided with the side air flow channel (160) that forms between the side panel (124) of the heating clamber of electronic components and the microwave oven shell; Between the lower panel (132) of the bottom panel (126) of heating clamber and micro-wave oven, form, and the bottom surface air flow passage (164) that communicates with side air flow channel (160); Air suction structure (148) in arbitrary setting of the outer peripheral face of heating clamber; Be arranged on the exhaust structure (150) on the heating clamber side panel (124a) that described exhaust motor unit (144) is installed; Be arranged on the lower end of front panel (128), and the exhaust grille (142) that communicates with described bottom surface air flow passage (164).

5, built-in microwave oven according to claim 4, it is characterized in that described air suction structure (148) be arranged on heating clamber (122) above.

6, built-in microwave oven according to claim 4 is characterized in that described air suction structure (148) is arranged on the side panel (124) of the heating clamber relative with the side that described exhaust motor group (144) is installed.