CN101225974B

CN101225974B - Embedded microwave oven

Info

Publication number: CN101225974B
Application number: CN200810059375XA
Authority: CN
Inventors: 茅忠群
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2008-01-25
Filing date: 2008-01-25
Publication date: 2010-08-04
Anticipated expiration: 2028-01-25
Also published as: CN101225974A

Abstract

The invention relates to an embedded microwave oven, improvements are made on the basis of primary casing, foreplate, door and decoration frame provided with a ventilating port and other parts, that is, the ventilating port is formed by an air inlet which is positioned at the outer circumferential lateral side of the decoration frame and an air outlet which is positioned at inner circumferential lateral side of the decoration frame and exposed to a gap, a sealing component is arranged at backside of the decoration frame which separates the air inlet and the air outlet; meanwhile, an air vent is opened on the front plate which is communicated with a cooking cavity and an electric appliance chamber and the air outlet is communicated with the air outlet and the gap. Due to the adoption of the structure, a negative pressure inlet channel is formed between the already-positioned microwave casing and inner wall of a cupboard, the air flow between the casing the cavity and inside the cavity is excluded from the air outlet at the foreplate via an air outlet and a gap; thus, on one hand, the air inlet and the air outlet are relatively hidden, not affecting the front visual effect of the microwave oven, one the other hand, the functions of the air inlet, the air outlet and the corresponding channel functions are clearly defined which is beneficial to the smooth flow of the air, ensuring that the internal energy of the microwave oven is dissipated in time, ultimately improving the safety and reliability in usage.

Description

A kind of built-in microwave oven

Technical field

The present invention relates to a kind of micro-wave oven, be specifically related to a kind of built-in microwave oven.

Background technology

Micro-wave oven is a kind ofly by microwave food to be shone and the device of heat food, because its heating comparatively easily and fast, thereby is widely used.And along with the development of family kitchen reform and micro-wave oven, the micro-wave oven of having been placed by table top develops into cabinet and is embedded in the built-in microwave oven that formula is installed at present, can make full use of kitchen space like this, and the integral layout in kitchen is rationalized more, hommization.

But also brought the heat dissipation problem of micro-wave oven thereupon, promptly because micro-wave oven is arranged on cabinet inside, thereby in use, can't carry out air-breathing and exhaust by the backplate or the external box of microvave side of micro-wave oven by heats that parts produced such as the built-in high-tension transformer of micro-wave oven, magnetrons, just can't carry out air by the micro-wave oven that table top is placed and flow.For this reason, the radiator structure that people's design makes new advances solves the air flow field problem in the built-in microwave oven, as China Patent No. is that 200420084743.3 " micro-wave oven embed install escutcheon " is exactly to have disclosed a wherein technical scheme, this escutcheon can block the space between built-in microwave oven and the cabinet deckle board, and on escutcheon, be provided with the louvre of perforation, the heat that produces when utilizing louvre to solve built-in microwave oven work.

Can anatomize in the above-mentioned patent documentation disclosed structure as can be known: because louvre is the front that is distributed in escutcheon, that is to say that louvre is to expose to micro-wave oven, directly in the face of the user, can destroy the Facad structure of micro-wave oven like this, influence the monnolithic case design of micro-wave oven.Secondly, this louvre is an air admission hole, is again steam vent, such design make two strands in the other direction airflow flowing bump, cause speed air flow slow, air circulation is defective and influence radiating effect smoothly inadequately.

Summary of the invention

Technical problem to be solved by this invention is at the prior art present situation, and a kind of built-in microwave oven of rational in infrastructure and good heat dissipation effect is provided.

The present invention solves the problems of the technologies described above the technical scheme that is adopted: this built-in microwave oven comprises the housing that is formed with culinary art cavity and electric apparatus room, be positioned at the header board in housing front, door for microwave oven and escutcheon, wherein, have fresh air inlet on the housing corresponding to described electric apparatus room, the place is equipped with fan at fresh air inlet, have louvre on the described cooking cavity body wall, and the periphery of described escutcheon is designed to the rectangle sheet frame that is complementary with cabinet reserved opening edge, leave the gap between the interior week of this escutcheon and the described door for microwave oven, and on described escutcheon, have ventilating opening, it is characterized in that: described ventilating opening is by being positioned at the air inlet on the described escutcheon circumferential lateral surface and being positioned on all sides of described escutcheon and the air outlet that is exposed to described gap is formed, the described escutcheon back side is provided with the sealing that above-mentioned air inlet and air outlet are separated mutually, simultaneously on described header board, also have the exhaust outlet that is connected with described culinary art cavity and electric apparatus room, and this exhaust outlet and above-mentioned air outlet, the gap is connected.

In the such scheme, sealing can match with the forward position of housing, after installing like this, constituted inlet channel between the outer wall of cabinet inwall and housing, between shell and the cavity and then air outlet and the gap discharge of exhaust outlet on escutcheon by header board of the thermal current of inside cavity.After micro-wave oven has been set up baking function, the top of general corresponding culinary art cavity can be provided with barbecue tube, at this moment, on this barbecue tube, can be provided with first wind scooper of opening towards described electric apparatus room, to form the barbecue thermal treatment zone, back side of shell then has the exhaust vent that is connected with this barbecue thermal treatment zone, on this exhaust vent, be covered with an auxiliary lid, at this moment match with described sealing in forward position that should auxiliary lid, and make formed between this auxiliary lid and the described housing with escutcheon on the exhaust passage that connects of air outlet.Like this, a part of air-flow of being introduced by fan enters the barbecue thermal treatment zone behind electric apparatus room, the heat that barbecue tube is produced air outlet, the gap on the exhaust vent at housing back, exhaust passage, escutcheon successively is distributed in the atmosphere, and this heat radiation approach can guarantee that the gas flow temperature of air outlet is unlikely to too high and the phenomenon of hitting human body occurs hindering.The auxiliary lid of setting up simultaneously also helps the coupling of escutcheon and micro-wave oven profile.

Preferably, can be provided with second wind scooper in electric apparatus room, form time air-out passage between this second wind scooper lower end and the housing bottom, the upper end air-out passage of this wind scooper is connected mutually with the opening of described first wind scooper.At this moment, air-flow from the fan introducing, be divided into two strands of primary airs forcibly behind the electrical equipment in the cooling electric apparatus room, one primary air from following air-out passage after the lower discharge hole on the header board, gap discharge, and another strand primary air enters the barbecue thermal treatment zone, with the adequacy of inner each electrical equipment cooling of assurance micro-wave oven and the smoothness of heat radiation.

What be highly profitable is, has the through hole that departs from the above-mentioned barbecue thermal treatment zone in case top, by means of this through hole, can make all the other air-flows of electric apparatus room and the indoor heat of culinary art enter into the exhaust passage apace, and successfully overflow from air outlet.

In above-mentioned each scheme, on the lateral surface around the escutcheon, preferably all have described air inlet; And the air inlet on each side is arranged in regular turn with a plurality of through holes and is become goodly, has so both guaranteed the area of air inlet, has guaranteed the intensity and the visual effect of escutcheon again.

Because hot gas is toward rising, thereby air outlet at this moment, can be designed to downward-sloping shape structure with all upper sides in the escutcheon only to be arranged on the upper side all in the escutcheon to well, and it is more smooth and easy that hot gas is distributed.This air outlet also can be designed to a plurality of long slot bores and arrange the structure that forms in regular turn simultaneously.

Compared with prior art, because the present invention is by means of the air outlet on the air inlet on the escutcheon circumferential lateral surface, the interior all sides and the fan of micro-wave oven itself, make the inlet channel that constitutes negative pressure between built-in microwave oven shell after the installation and the cabinet inwall, between shell and the cavity and the air-flow of inside cavity then the exhaust outlet by header board discharge through air outlet, gap, thereby on the one hand comparatively hidden into and out of the air port among the present invention, do not influence the positive visual effect of micro-wave oven; On the other hand, then clearly distinguish into and out of the air port and corresponding channel function, flow swimmingly, guarantee that the built-in microwave oven internal heat in time distributes, finally improve security and reliability that the present invention uses to help air.

Description of drawings

Fig. 1 is the isometric front view of the embodiment of the invention;

The stereogram of Fig. 2 after for the action button of removing escutcheon and right side among Fig. 1;

Fig. 3 is the schematic perspective view of escutcheon among Fig. 1;

Fig. 4 is the schematic perspective view of header board among Fig. 1;

Fig. 5 is an embodiment of the invention rear isometric view;

Fig. 6 is for removing the stereogram behind the auxiliary lid among Fig. 5;

The stereogram of Fig. 7 after for the main body of removing housing among Fig. 6;

Fig. 8 is for removing the isometric front view behind first wind scooper and the decorative panel among Fig. 7;

Fig. 9 is for removing interior electrical equipment of electric apparatus room and the stereogram behind second wind scooper among Fig. 8;

Figure 10 is installed in structural representation in the cabinet for the embodiment of the invention;

Figure 11 is the vertical view of Figure 10

Figure 12 is that A-A among Figure 11 is to profile;

Figure 13 is the heat exchange schematic diagram of air-flow turnover in the use of the present invention.

The specific embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

As depicted in figs. 1 and 2, this built-in microwave oven comprises housing 1, is positioned at the header board 4 in housing front, door for microwave oven 5 and escutcheon 6, its middle shell is made of main body, backplate and the base plate of ∩ shape again, in housing, be formed with culinary art cavity 2 and electric apparatus room 3 routinely, in the present embodiment, culinary art cavity 2 is positioned at the left side of housing, and the right side in the housing is described electric apparatus room, and magnetron 7, high-tension transformer 8 and high-voltage capacitor are installed in the electric apparatus room.

The periphery of above-mentioned escutcheon 6 is designed to the rectangle sheet frame, and as shown in Figure 3, the middle part of this escutcheon has the window 61 that embeds for door for microwave oven 5 and forms interior week, leaves gap 9 between week and the door for microwave oven in this.Here, be equipped with air inlet 62 the outer Thursday of escutcheon on the side, and the air inlet on each side is that a plurality of through holes are arranged in regular turn and formed.The upper side in week is designed to downward-sloping shape structure in the described escutcheon, and design has air outlet 63 on this upper side, and this air outlet is arranged in order by a plurality of long slot bores and forms, and is exposed in the above-mentioned gap 9.Simultaneously be provided with the sealing that above-mentioned air inlet and air outlet are separated mutually at the back side of escutcheon, promptly between the air outlet of the air inlet on escutcheon top and interior all upper sides, be provided with the ∩ shape support portion 64 of evagination, be fixed with the sealant 65 of similar materials such as sponge in this abutment surfaces.

Fig. 4 is the structure chart of above-mentioned header board 4, and the top of this header board, left part and bottom all have and cook the exhaust outlet 41 that cavity and electric apparatus room are connected, and sees also shown in Figure 2ly, and this exhaust outlet 41 is connected with above-mentioned air outlet 63, gap 9.

Have fresh air inlet 10 on the backplate corresponding to the housing of above-mentioned electric apparatus room, see also Fig. 5 and Fig. 6, fan 11 is installed in the electric apparatus room at fresh air inlet place, see also Fig. 7 and Fig. 8, simultaneously have louvre 12 routinely, see also Fig. 9 at cooking cavity body sidewall and top.

Micro-wave oven in the present embodiment has baking function, thereby above the culinary art cavity, be provided with barbecue tube 13, this barbecue tube is provided with opening and forms the barbecue thermal treatment zone towards first wind scooper 14 of electric apparatus room, see also Fig. 7, and on the backplate of housing, have an exhaust vent 15 that is connected with this barbecue thermal treatment zone, on exhaust vent 15, then be covered with an auxiliary lid, should form by top lid 16 and rear cover body 17 by auxiliary lid, rear cover body 17 covers exhaust vent 15 fully, top lid 16 is with after rear cover body 17 links to each other, the front of top lid 16 is along tightly contacting mutually with the sealant of above-mentioned sealing, make to have formed the exhaust passage 18 that connects with air outlet between auxiliary lid and the housing end face, see also Fig. 5, Fig. 6 and Figure 12.

And distribute in order to accelerate electric apparatus room and the indoor heat of culinary art, have the through hole 19 that departs from the above-mentioned barbecue thermal treatment zone in case top, as shown in Figure 6, utilize this through hole, can make electric apparatus room and the indoor heat of culinary art enter into the exhaust passage apace, overflow from the air outlet of decorative panel.

Flow as required in order to ensure air, in above-mentioned electric apparatus room, also be provided with second wind scooper 20, see also Fig. 7 and Fig. 8, formed time air-out passage between these second wind scooper, 20 lower ends and the housing base plate, the upper end air-out passage of this wind scooper is connected mutually with the opening of first wind scooper 14.

After the present invention embeds cabinet 21, just become structure as shown in Figure 10 and Figure 11, this moment escutcheon 6 around can just shelter from the edge of cabinet reserved opening, constituted the inlet air flow passage 22 of linking up mutually around the shell of micro-wave oven and between the cabinet inwall with the air inlet of escutcheon periphery, as shown in Figure 12, when the fan blade of fan rotates, extraneous air-flow is outside escutcheon behind the air inlet on the Thursday side, enter inlet air flow passage 22 successively, as Figure 12 and filled arrows shown in Figure 13, and behind the fresh air inlet 10 of back side of shell, enter in the electric apparatus room, under the driving of fan 11, air flows in electric apparatus room 3, make magnetron 7, cooling such as transformer 8 parts such as grade, air-flow in the final electric apparatus room mainly is divided into the multiply air-flow, and a part of air-flow is behind the following air-out passage of second wind scooper, 20 belows, from the steam vent 41 of header board bottom, discharge in the gap 9; Another part air-flow enters in the barbecue thermal treatment zone of culinary art cavity top, this part air-flow is brought into the heat of barbecue tube in the exhaust passage 18 from exhaust vent 15, finally discharge through the gap by the air outlet on all upper sides in the escutcheon 63, the remainder air-flow is drained through the gap from the exhaust outlet 41 on header board top, shown in the hollow arrow as shown in figure 13.

Cook indoor thermal current and then be divided into three parts, first enters in the barbecue thermal treatment zone through the louvre of top rear, and the heat of the good luck above-mentioned barbecue thermal treatment zone is discharged (seeing shown in Fig. 8,9,12) from the exhaust passage through air outlet, gap together; Second portion enters into the exhaust passage through the louvre (as shown in Figure 6) of front side, top through the louvre of case top, also discharges through air outlet, gap; The louvre of third part on left side wall discharged (seeing Fig. 8 and Fig. 9) from exhaust outlet, the gap of header board left part; And the louvre of the 4th part on right side wall discharged (seeing Fig. 8 and Fig. 9) from the exhaust outlet on header board top.

Claims

1. built-in microwave oven, comprise the housing (1) that is formed with culinary art cavity (2) and electric apparatus room (3), be positioned at the header board (4) in housing front, door for microwave oven (5) and escutcheon (6), wherein, have fresh air inlet (10) on the housing corresponding to described electric apparatus room, fan (11) is installed at the fresh air inlet place, have louvre (12) on the described cooking cavity body wall, and the periphery of described escutcheon (6) is designed to the rectangle sheet frame that is complementary with cabinet reserved opening edge, leave gap (9) between the interior week of this escutcheon and the described door for microwave oven (5), and on described escutcheon (6), have ventilating opening, it is characterized in that: described ventilating opening is by being positioned at the air inlet (62) on described escutcheon (6) circumferential lateral surface and being positioned on all sides of described escutcheon and the air outlet (63) that is exposed to described gap is formed, the described escutcheon back side is provided with the sealing that above-mentioned air inlet (62) and air outlet (63) are separated mutually, on described header board (4), also have simultaneously the exhaust outlet (41) that is connected with described culinary art cavity (2) and electric apparatus room (3), and this exhaust outlet (41) and above-mentioned air outlet (63), gap (9) is connected, the top of corresponding culinary art cavity is provided with barbecue tube (13), this barbecue tube is provided with opening and forms the barbecue thermal treatment zone towards first wind scooper (14) of described electric apparatus room, and have an exhaust vent (15) that is connected with this barbecue thermal treatment zone at described back side of shell, on this exhaust vent (15), then be covered with an auxiliary lid, should assist the forward position of lid to match with described sealing, and make and formed the exhaust passage (18) that connects with described air outlet between this auxiliary lid and the described housing, also be provided with second wind scooper (20) in the described electric apparatus room, formed time air-out passage between this second wind scooper lower end and the described housing bottom, the upper end air-out passage of this wind scooper is connected mutually with the opening of described first wind scooper (14).

2. built-in microwave oven according to claim 1 is characterized in that: have the through hole (19) that departs from the above-mentioned barbecue thermal treatment zone in described case top.

3. built-in microwave oven according to claim 1 and 2 is characterized in that: all have described air inlet (62) on the lateral surface around the described escutcheon.

4. built-in microwave oven according to claim 3 is characterized in that: the air inlet (62) on described each lateral surface is arranged in regular turn for a plurality of through holes and is formed.

5. built-in microwave oven according to claim 1 and 2 is characterized in that: described air outlet (63) then only is arranged on the upper side in week in the described escutcheon (6).

6. built-in microwave oven according to claim 5 is characterized in that: all upper sides are downward-sloping shape structure in the described escutcheon (6).

7. built-in microwave oven according to claim 6 is characterized in that: described air outlet (63) is arranged in regular turn by a plurality of long slot bores and is formed.