CN1715763A - Heat radiation structure of microwave oven - Google Patents

Abstract

The heat radiation structure of microwave oven includes one oven body with air sucking ports and air exhaust ports and comprising bottom plate, casing and back panel; one oven case inside the oven body to form the cooking chamber; one magnetron on the bottom plate; one air channel in the bottom inside the oven case to lead airflow; one high voltage transformer set inside the air channel; and one air blower to suck air and blow air to the magnetron space. By means of the cooling fan and the fan motor, the present invention can cool the high voltage transformer and the magnetron fluently.

Description

The radiator structure of micro-wave oven

Technical field

The present invention relates to the micro-wave oven field.

Background technology

In general, micro-wave oven as heating source, also utilizes the intermolecular frictional heat that produce to come the utensil of cooking food by the molecules align that upsets in the food with high frequency (the about 2450MHz of per second).

Micro-wave oven is usually by the fuselage that includes base plate 11 and outward appearance framework 12 and rear board 13; Form the cabinet 20 of cooking room; The electric apparatus room etc. that is provided with various electric components such as high-tension transformer 30 is partly formed.

Fig. 1 represents that the electric apparatus room in the prior art is positioned at the summary exploded perspective view of the micro-wave oven internal structure of bottom.Fig. 2 represents the plane of the underbelly space structure of micro-wave oven in the prior art.

Fig. 1 and Fig. 2 summary are expressed in the micro-wave oven of aforesaid prior art, and electric apparatus room is arranged at an example of cabinet 20 bottoms.

As above the micro-wave oven of structure is because its electric apparatus room is arranged at the bottom of cabinet 20, thus particularly important to the requirement of dispelling the heat, will describe radiator structure in detail below.

At first, two of the radiator structure of prior art cooling fans 41,42 are arranged at the front side bottom of base plate 11 respectively.

At this moment, a cooling fan is used to cool off high-tension transformer 30 electric components such as grade to call " the 1st cooling fan " 41 in the following text; The another one cooling fan is used for air supply in magnetron 50 and cabinet 20 to call " the 2nd cooling fan " 42 in the following text.

In addition, the place ahead downside of base plate 11 has the air suction inlet 11a of most gap shapes, and the upside position of rear board 13 and downside position form most air outlet 13a, 13b respectively.

Here, in each air outlet 13a, 13b, the air outlet that is formed at rear board 13 downside positions is used to discharge the air of the various electric components of cooling to call " the 1st air outlet " 13a in the following text; The air outlet that is formed at rear board 13 upside positions is used to discharge the air that is circulated throughout in the cabinet 20 to call " the 2nd air outlet " 13b in the following text.

Simultaneously, fan electromotor 41a, 42a drive cooling fan 41,42 respectively, separate mutual air flue by demarcation strip 60.

And a side wall surface of cabinet 20 is formed with most air ostiums 21, and upper side also forms most air tap holes (diagram is omitted) simultaneously.

Wherein, the lateral surface top of cabinet 20 has been wholely set shielding part 23, and the inner space of shielding part 23 is communicated with air tap hole and the 2nd air outlet 13b respectively.

But, in the micro-wave oven of aforesaid prior art, in order to cool off high-tension transformer 30 and magnetron 50 respectively, and use most cooling fans 41,42 and fan electromotor 41a, 42a, so its overall structure complexity has also improved Master Cost simultaneously.

And in the micro-wave oven of aforesaid prior art, because each fan electromotor 41a, 42a and cooling fan 41,42 are positioned at the front side of fuselage, the noise that produces during its work will be directly delivered on one's body the user, make the user produce discomfort thus.

For this reason, proposed to utilize a cooling fan and fan electromotor radiator structure recently, as Republic of Korea's openly specially permit communique 10-2004-0009897 number, 10-2004-0009898 number, 10-2004-0009899 number etc. with the micro-wave oven of realizing the heat radiation of electric apparatus room and magnetron.

Fig. 3 represents the approximate three-dimensional map of the micro-wave oven internal structure of another form in the prior art.The plane of the underbelly space structure of micro-wave oven in Fig. 4 presentation graphs 3.

The radiator structure of aforesaid micro-wave oven bottom space expressed in Fig. 3 and Fig. 4 summary.

Radiator structure is provided with most demarcation strips 81,82, is used for space that branch is separated with phase inverter 70, is provided with the electric apparatus room of high-tension transformer 30 etc. and the space that is provided with magnetron 50.Then be provided with blowing fan 83 between each space.

That is, by the driving of blowing fan 83, the air of electric apparatus room is drawn in the blowing fan 83, and discharges to the space that is provided with that space and magnetron 50 are set of phase inverter 70, thereby realizes heat radiation process everywhere.

But, in the structure of prior art, should consider that high-tension transformer 30 emits a large amount of high temperature hot gas, make the air that passes through in the electric apparatus room become the quite high state of temperature, carry out the heat radiation of magnetron 50 and phase inverter 70 etc. with the high air of temperature is mobile, so the radiating effect of magnetron 50 and phase inverter 70 is with big heavy discount.

And the fan electromotor 84 that is used to drive blowing fan 83 is positioned at inlet air flow path, therefore is subjected to the hot gas influence of emitting in the high-tension transformer 30, and causes problems such as maloperation or damage probably.

In addition, the electric apparatus room that is provided with high-tension transformer 30 just passes through the driving of blowing fan 83, the air of electric apparatus room inside is discharged to other position, can directly dispel the heat in fact, so need new structure to be used for the heat radiation of high-tension transformer 30 high-tension transformer 30.

Also have, the unit price of considering phase inverter 70 is costliness and can using hardly quite, under the state that does not use phase inverter 70, and the position that need utilize phase inverter 70 to vacate.

Simultaneously, in the structure of prior art, air flows turn sharp, and then causes the generation of more noise, does not have corresponding effectively blocking-up to produce the structure of noise again.

Summary of the invention

Technical problem to be solved by this invention is, a kind of radiator structure of micro-wave oven is provided, and utilizes a cooling fan and fan electromotor, just can make the smooth and easy heat radiation of high-tension transformer and magnetron.

In addition, another object of the present invention is to, make smooth and easy the flowing of air of heat radiation, reduce noise on the whole, and have the structure of the noise of blocking-up generation to external leakage.

In order to solve the problems of the technologies described above, the technical solution used in the present invention is: the radiator structure of micro-wave oven includes base plate, casing, rear board, be provided with most air suction inlets and most air outlets at least one position, the fuselage that is used to suck extraneous air and discharges the heat radiation air; Be arranged on the fuselage internal upper part space and be formed with the cabinet of cooking room; Be arranged at the magnetron of a side above the base plate; Be arranged between the bottom surface and base plate of the cabinet of front side in the base plate fuselage, be used to guide air to flow and the air channel that is formed with certain space; Be arranged at the high-tension transformer on the inlet air flow path in front side space in the fuselage that forms by air channel; The rear side space sucks air in the fuselage, and to the interior volume that forms by air channel, and the air-supply arrangement that space while blow air is set of magnetron.

Described air suction inlet is communicated with the rear side space in the fuselage.

Described air outlet is communicated with in the interior front side space of fuselage because the front side space that air channel forms.

Described high-tension transformer be arranged in the space that air channel forms and the position of blowing fan adjacent, i.e. the position that air flows in the air channel.

Described in being provided with the air channel of high-tension transformer, additional being provided with to air discharged the air guiding device that side direction forms, and is used to guide the air by high-tension transformer smooth and easy mobile to the air discharge side of air channel.

Describedly be provided with the space upside of high-tension transformer, additionally be provided with noise and prevent plate, be used to prevent that the noise that produces from emitting to top at air channel.

Described noise prevents that plate and air channel from forming an integral body.

Described air-supply arrangement includes from the rear side space suction air of fuselage and to space that air channel forms and the blowing fan that is provided with the space while blow air of magnetron; Be used to drive the fan electromotor of blowing fan; The fan drum that is used for the supports fan motor and guides air to flow.

The invention has the beneficial effects as follows: the radiator structure in the embodiment of the invention can be realized the direct air cooling to high-tension transformer, thereby has improved the radiating effect of high-tension transformer.

Particularly, high-tension transformer will be arranged at the inside of air channel, make to the temperature temperature more in the past of magnetron and other electric component heat radiation blow air is lower, and then can improve radiating effect on the whole.

And radiator structure of the present invention can effectively reduce driving noise and the vibrating noise that produces in the high-tension transformer, has the effect that reduces noise on the whole.

Description of drawings

Fig. 1 represents that the electric apparatus room in the prior art is positioned at the summary exploded perspective view of the micro-wave oven internal structure of bottom.

Fig. 2 represents the plane of the underbelly space structure of micro-wave oven in the prior art.

Fig. 3 represents the approximate three-dimensional map of the micro-wave oven internal structure of another form in the prior art.

The plane of the underbelly space structure of micro-wave oven in Fig. 4 presentation graphs 3.

Fig. 5 represents the summary exploded perspective view of microwave oven in the embodiment of the invention.

Fig. 6 represents the plane of the micro-wave oven internal structure in the embodiment of the invention.

Fig. 7 represents in the micro-wave oven of the embodiment of the invention, reduces the structural plan figure that high-tension transformer produces noise.

Fig. 8 represents in the micro-wave oven of the embodiment of the invention, reduces the main sectional side view of noise structure that high-tension transformer produces.

The symbol description of drawing major part

110: 111: the 1 air suction inlets of base plate

Air discharged 120 in 112: the 4: the outward appearance framework

Air discharged 130 in 121: the 1: rear board

132: the 2 air outlets of 131: the 2 air suction inlets

Air outlet 200 in 133: the 3: cabinet

300: air channel 310: air guiding device

320: noise prevents plate 330: the vibrationproof member

410: high-tension transformer 420: magnetron

510: blowing fan 520: fan electromotor

530: fan drum

The specific embodiment

Below in conjunction with the drawings and specific embodiments the present invention is described in further detail: Fig. 5 represents the summary exploded perspective view of microwave oven in the embodiment of the invention.Fig. 6 represents the plane of the micro-wave oven internal structure in the embodiment of the invention.

At first, as Fig. 5 and shown in Figure 6, the micro-wave oven in the embodiment of the invention includes parts such as fuselage, cabinet 200, air guiding device 300, high-tension transformer 410, magnetron 420 and air-supply arrangement substantially.

Meanwhile, fuselage forms most air suction inlets 111,131 and air outlet 121,132,133 respectively.

Wherein, air suction inlet 111,131 is communicated with the rear side space in the lower space in the fuselage; Air outlet 121,132,133 is communicated with the front side space in the lower space in the fuselage.

For this reason, air suction inlet 111,131 forms along the rear side of base plate 110 and the lower side of rear board 130 respectively; 121,132,133 of air outlets respectively are formed at the left surface the place ahead of outward appearance framework 120 and the upper end, left side and the upper end center side of rear board 130.

Particularly, the air suction inlet that the rear side of base plate 110 forms is to call " the 1st air suction inlet " 111 in the following text, and inhalation flow is in the air of fuselage outer side bottom in " the 1st air suction inlet ".

Meanwhile, the air suction inlet that forms along the lower side of rear board 130 is to call " the 2nd air suction inlet " 131 in the following text, and inhalation flow is in the air at fuselage outer side rear in " the 2nd air suction inlet ".

And the air outlet that left surface the place ahead of outward appearance framework 120 forms is discharged the air that flows in front side space in the interior lower space of fuselage to call " the 1st air outlet " 121 in the following text in " the 1st air outlet ".

Meanwhile, the air outlet that the upper end, left side of rear board 130 forms is to call " the 2nd air outlet " 132 in the following text, and the air outlet that the center side of rear board 130 upper end forms is discharged the heat radiation air of cabinet 200 inside to call " the 3rd air outlet " 133 in the following text.

Particularly, when from viewed in plan base plate 110, its place ahead, left side also is provided with other air outlet, to call " the 4th air outlet " 112 in the following text.

Wherein, the 4th air outlet 112 and the 1st air outlet 121 are together discharged the air that flows in front side space in the interior lower space of fuselage.

That is, compare with the situation of air-supply arrangement work, will having more, the extraneous air of volume flow in the front side space.

In addition, the cabinet in the embodiment of the invention 200 will be installed on the interior upside of fuselage and form cooking room simultaneously.

Meanwhile, the two sides of cabinet 200 respectively are formed with air ostium 211 and air tap hole (diagram is omitted).

Here, air ostium 211 is formed at the side of cabinet 200; The air tap hole is formed at the rear side of cabinet 200 to call " the 1st air tap hole " in the following text.

Particularly, also be formed with other air tap hole above the front side of cabinet 200, to call " the 2nd air tap hole " 222 in the following text.

At this moment, flow into the air of giving magnetron 420 heat radiations in the air ostium 111.

Simultaneously, discharge the air that passes through cabinet 200 inside in the 1st air tap hole; Discharge the air that prevents moisture in the cabinet 200 in the 2nd air tap hole 222.

And the magnetron 420 in the embodiment of the invention will be arranged on the space, side of lower space in the fuselage, side on base plate 110 (right side on the drawing).

In addition, the air channel 300 in the embodiment of the invention is arranged between the bottom surface of the cabinet 200 of front side in the fuselage and base plate 110 top, and is formed for the certain space that guides air to flow.

At this, the space that air channel 300 forms is separated mutually with the space, fuselage inside portion that is provided with magnetron 420 and is provided with.

Structure according to air channel 300, lower space in the fuselage is divided into the front side space that is communicated in the 1st air outlet 121 and the 4th air outlet 112, be provided with the side spaces of magnetron 420, and be communicated in outside rear side space by the 1st air suction inlet 111 and the 2nd air suction inlet 131.

Wherein, though not shown, the rear side space in the fuselage in the lower space is provided with the various electric components except magnetron 420 and high-tension transformer 410.

In addition, the high-tension transformer 410 in the embodiment of the invention will be arranged in the inlet air flow path in the space that air channel 300 forms, and the formation position of the 4th air outlet 112 and air channel 300 be inner to be flowed between the position of air.

Particularly, the preferably contiguous side that flows into air in the air channel 300 that is arranged at of high-tension transformer 410, this is in order to prevent leaked-in air in the air channel 300, to discharge through passing through the 4th air outlet 112 before the high-tension transformer 410, and then improving radiating effect.

And, be provided with and additionally on the space of air channel 300 of high-tension transformer 410 be provided with air guiding device 310, be used to guide and discharge to the air of air channel 300 by the air of high-tension transformer 410 that side is smooth and easy to flow.

Here, air guiding device forms to the outflow side of air from the inflow side of air, and certainly, circular arc can prevent the generation of eddy current.

Simultaneously, it is mobile that the air-supply arrangement in the embodiment of the invention is used to form the air that dispels the heat in the fuselage.

Wherein, air-supply arrangement includes parts such as blowing fan 510, fan electromotor 520 and fan drum 530.

Blowing fan 510 rear side space the lower space in fuselage sucks air, and space in air channel 300 and the space while blow air that is provided with magnetron 420.

In addition, fan electromotor 520 is incorporated into blowing fan 510, and drives for rotating blowing fan 510.

And fan drum 530 is used for supports fan motor 520 and guides the air-flow direction that passes through blowing fan 510.

Describe the heat radiation process in underbelly space below in detail according to aforesaid embodiment of the invention structure.

At first, when micro-wave oven is started working, fan electromotor 520 as air-supply arrangement drives and rotation blowing fan 510, and by being communicated in the fuselage the 1st air suction inlet 111 in rear side space and the 2nd air suction inlet 131 in the lower space, the air of finishing on the rear side space sucks.

At this moment, the extraneous air by each air suction inlet 111,131 sucks will cool off various electric components in the electric apparatus room that constitutes the rear side space for the first time.

Subsequently, by the lasting rotation of blowing fan 510, the air of cooling electric component will pass through fan drum 530 then, and separately blow in air channel 300 interior volume that forms and be provided with in the space of magnetron 420.

Leaked-in air in the air channel 300 will and make high-tension transformer 410 heat radiations by high-tension transformer 410.

Meanwhile, air by high-tension transformer 410, under the guiding of the internal face of air channel 300 and path guiding device 310, to flow to the position that the 1st air outlet 121 and the 4th air outlet 112 form, and discharge to the fuselage outside by the 1st air outlet 121 and the 4th air outlet 112.

In addition, flow into magnetron 420 air in the space is set, in by the process of magnetron 420, will make magnetron 420 heat radiations, and the air ostium 211 that forms by cabinet 200 sides flow in the cooking room.

Here, flow into the air in the cooking room, after will being circulated in cooking room inside and removing moisture,, and continue to discharge to fuselage is outside to cabinet 200 outside discharges by the 1st air tap hole that forms in the cabinet 200 and the 2nd air tap hole 222 by the 2nd air outlet 132 and the 3rd air outlet 133.

Thus, be arranged at the high-tension transformer 410 and the magnetron 420 in fuselage inner bottom part space, and other various electric components be when can realize smooth and easy heat radiation, the moisture removal effect in the cooking room is also quite satisfied.

Simultaneously, in foregoing embodiment of the invention structure, because the upside of air channel 300 is an open state, so even if, will produce certain clearance each other by combining and the upside opening portion in occluded air air channel 300 with cabinet 200.

Thereby the noise that high-tension transformer 410 produces when driving may be by the gap to external leakage.And the vibration that the driving of high-tension transformer 410 causes makes between the bottom surface of top and cabinet 200 of air channel 300 may produce contact noise.

Fig. 7 represents in the micro-wave oven of the embodiment of the invention, reduces the structural plan figure that high-tension transformer produces noise.Fig. 8 represents in the micro-wave oven of the embodiment of the invention, reduces the main sectional side view of noise structure that high-tension transformer produces.

For this reason, as shown in Figure 7, the top noise that also is provided with that is provided with the air channel 300 at high-tension transformer 410 positions prevents plate 320.

Here, noise prevents that plate 320 one-piece type formation on air channel 300 is more suitable.

Certainly, as shown in Figure 8, for reducing the vibration of high-tension transformer 410, it is more suitable that noise prevents also to be provided with vibrationproof member 330 between plate 320 and the high-tension transformer 410.

Wherein, the vibrationproof member 330 usefulness materials such as rubber that can reduce vibration are made.

As a result, prevent plate 320, will no longer include the gap above the air channel 300 that high-tension transformer 410 is positioned at and between the bottom surface of cabinet 200, thereby can prevent to drive the leakage of noise by noise.Simultaneously, also can reduce vibrating noise by vibrationproof member 330.

Claims (8)

1. the radiator structure of a micro-wave oven includes base plate, casing, rear board, is provided with most air suction inlets and most air outlets at least one position, the fuselage that is used to suck extraneous air and discharges the heat radiation air; Be arranged on the fuselage internal upper part space and be formed with the cabinet of cooking room; Be arranged at the magnetron of a side above the base plate; It is characterized in that: be arranged between the bottom surface and base plate of the cabinet of front side in the base plate fuselage, be used to guide air to flow and the air channel that is formed with certain space; Be arranged at the high-tension transformer on the inlet air flow path in front side space in the fuselage that forms by air channel; The rear side space sucks air in the fuselage, and to the interior volume that forms by air channel, and the air-supply arrangement that space while blow air is set of magnetron.

2. the radiator structure of micro-wave oven according to claim 1 is characterized in that: the rear side space in the air suction inlet connection fuselage.

3. the radiator structure of micro-wave oven according to claim 1 is characterized in that: the front side space that forms owing to air channel in the front side space in the air outlet connection fuselage.

4. the radiator structure of micro-wave oven according to claim 1 is characterized in that: high-tension transformer be arranged in the space that air channel forms and the position of blowing fan adjacent, i.e. the position that air flows in the air channel.

5. the radiator structure of micro-wave oven according to claim 4, it is characterized in that: in being provided with the air channel of high-tension transformer, additional being provided with to air discharged the air guiding device that side direction forms, and is used to guide the air by high-tension transformer smooth and easy mobile to the air discharge side of air channel.

6. the radiator structure of micro-wave oven according to claim 1 is characterized in that: be provided with the space upside of high-tension transformer at air channel, additionally be provided with noise and prevent plate, be used to prevent that the noise that produces from emitting to top.

7. the radiator structure of micro-wave oven according to claim 6 is characterized in that: noise prevents that plate and air channel from forming an integral body.

8. the radiator structure of micro-wave oven according to claim 1 is characterized in that: air-supply arrangement includes and sucks air from the rear side space of fuselage and to space that air channel forms and the space that the is provided with magnetron blowing fan of blow air simultaneously; Be used to drive the fan electromotor of blowing fan; The fan drum that is used for the supports fan motor and guides air to flow.

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