DE2933696A1 - VENTILATION SYSTEM FOR A COMBINATION OF A MICROWAVE OVEN AND AN EXHAUST AIR VENTILATION - Google Patents

Description

Ventilation system for a combination of a microwave oven and exhaust gas ventilation

The invention relates generally to an arrangement for combining an auxiliary cooking device, such as a microwave oven, with a ventilation or suction hood, which is used together with a conventional type of cooker.

Such an arrangement has in a unitary structure a conventional electric stove, which in a lower part, and a microwave oven fixed in an upper part. A suction hood assembly for the conventional one Electric oven is formed above the microwave oven with an inlet opening above the front or Is arranged front of the microwave oven. Consequently

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gases and vapors rise during cooking The conventional stove is generated on and are over the front of the microwave oven and up drawn or sucked into the stove vent inlet port. If a microwave oven is to be used, while such cooking gases and vapors rise from the electric range over the freezing side of the former, some may these moisture- and grease-laden gases and vapors are sucked into the microwave oven ventilation system, its inlet opening usually at the bottom of the microwave oven housing is arranged. In such a case, the electronic components of the microwave oven contaminated with fat, steam and other gaseous cooking products generated by the electric stove below.

Moreover, while combination products of the above general type are known, these are generally larger as desired. In particular, conventional oven and exhaust vents combinations protrude outwardly from the mounting wall away by an extent that the average user's field of vision is beyond that below the stove or the cooking equipment underneath / obstructed. This is even more true, if the controls of the cooker are located at the rear of the cooker, / essential

The object of the invention is to avoid these disadvantages Provide a simple combination of microwave oven and exhaust ventilation.

The invention provides an arrangement for combining a cooking device with a stove ventilation hood, which means for forming a housing for the cooking device, means for supporting the housing, and includes means for spacing at least a portion of the housing from the support means to provide an air space

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to achieve in between. A means for channeling the air space between an inlet end and an outlet end and means for venting gases and vapors entering the inlet end, from the outlet end is also provided.

The arrangement also contains a further air ducting system, which is independent of the one mentioned above, the Air from outside the assembly, through the electronic components compartment and oven compartment and back leads to the outside of the arrangement. Each of the circulation systems contains its own powered fan for movement the air.

The invention gitfc an arrangement for combining a

Cooker, for example a microwave oven with a stove ventilation hood, with a stove housing and a support device for fastening the housing on a wall or on the floor of an overhead cabinet over a conventional cooking range. The carrying device includes a rear wall on which ribs are formed to extend the rear of the housing from the rear wall to Space between forming a channel-shaped air space. A plate is on the lower section of the back wall attached and extends forward toward and below the front of the device housing Formation of a second channel-shaped air space between the Plate and the bottom of the case. The two air spaces formed in this way are in communication with one another, thus cooking gases

en and vapors from the stove up through the opening in the plate, then sucked through the two air spaces and out of the assembly at or near the rear top thereof can. A ventilation device for the microwave oven that is completely separate and different from the first

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and second ducted ventilation air space, is also provided so that the feature of the cooker hood vent and the microwave venting feature of the assembly independently as desired or can be used simultaneously.

The invention is explained in more detail using the exemplary embodiment shown in the drawing. 1 shows

an exploded perspective view of the oven / ventilation arrangement according to the invention, with some air ducts being omitted from module 9 for a clearer illustration,
Fig. 2

is an exploded perspective view of the furnace operating module of the assembly with the air duct attachments removed from the main frame and showing the air flow openings used in the air circulation system,
Fig. 3

in perspective, the module according to FIG attached device are highlighted, Fig. 4

the arrangement according to FIGS. 3, 5 in plan view

in sectional view the arrangement according to FIG. 3 along the section line 5-5 in FIG. 4,

Fig. 6

in the cutout; a side view of the arrangement according to Line 6-6 in Figure 5 showing selected parts

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are to certain characteristics of the air ventilation system to show.

As shown in the drawings, the microwave oven assembly of the invention generally includes support means including a main support member 23, a top cover 36 and a bottom closure plate 32 which are joined together to form an enclosure containing a microwave oven operating module or carries an arrangement. The overall arrangement and the assembly method for this is explained in detail in the patent application / (Applicant General Electric Company Az. 8131-9D-RG-13099), "Combination of a microwave oven and an exhaust gas vent and assembly method therefor". The description of the various components or parts of the device takes place here only to the extent that is necessary to understand the air circulation arrangement used here. is required. fp

The microwave oven arrangement or module 9 contains a cooking space 1o and an oven control part arranged adjacent to it 12, which houses electronic assemblies for operating the furnace, both within a housing or main rooms 14 are arranged and separated from one another by a partition 16 (FIG. 2). Access to the cooking area 1o takes place through a door 18 which is attached to a door frame 2o, the latter along its top and Floor edges at front end portions of the top and bottom of the main room 14 is attached. The door 18 is pivotably mounted on its left side and can be actuated by means of a handle 9. A cover part or a

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Front panel 3 closes the forward-facing opening of compartment ₁₂ .

The main frame 14 of the module 9 is generally composed of sheet metal, as it is in the patent application filed at the same time P Applicant General Electric Co.

Az. 8114-9D-RG-13110. On this registration will referred to for construction details of the sheet metal body of the module. In summary, however, contains the sheet metal body or main frame 14 a top 5, side walls 4, a back 6 and a bottom side 7. The top 5 has a pair elongated rails 28a, 28b, which generally have the cross-section of an inverted L and along the edges of the Upper side 5 are formed and extend essentially over the entire depth of the module 9.

The main frame 14 has accessories at the top 5 including a waveguide 82 and a control housing 84. The waveguide 82 carries microwave energy, generated in a magnetron (not shown) contained in the control compartment 12, into the control housing 84, from where it is in the microwave oven chamber or the cooking space 1o is directed downwards in a manner known per se.

The oven chamber or the cooking space 1o is with the exception of Door opening and two air-permeable or perforated areas closed, the first area 88 in the right Go through the side wall through the partition 16 and its second area 9o in the top 5 on the left-hand side of the arrangement A combination of a lamp housing and

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an air guide member 92 covers the perforated

Area 9o and serves to guide air from the oven chamber or the cooking space 1o to the outside the arrangement, as will be explained below. An air duct 8o (Fig. 2) is attached to the top 5 of the module 9 above the waveguide 82 and the control housing 84, which is also used to guide air through the assembly from the compartment 12 for electronic Components exits through an opening 76 (FIG. 2) in the top 5 thereof. An air line 68 is also provided in compartment 12 to concentrate air along its various paths, such as that will be explained in detail further below.

The main support member 23 essentially forms the entire holder of the arrangement, which is why it is made comparatively —— thick sheet metal

is trained. The main support member 23 includes a rear wall 24 which is formed so that they are substantially flush against a standard blackboard 16

fits, as well as a couple supporting the furnishings

one-piece: side walls 26a, 26b. The rear wall 24 has an opening 73 for forming a ventilation path to the outside of the arrangement along its rear side, wherein the opening 73 is either closed by a suitable cover part or in air connection is brought to the outside with a stove exhaust duct or pipe for ventilation, like that will be explained further below.

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The rear wall 24 includes a pair of protruding walls or ribs 4 4a and 4 4b on its inside for enhancement their strength and rigidity. The ribs 44a, 44b also perform the function of exhaust air through to guide the structure or the arrangement.

Several rows of holes 41 extend across the rear wall 24, at least through selected ones of them an anchor screw 2 5 or

another suitable threaded fastener is insertable to the arrangement on the wall panel 16 and on at least one wall support member or to secure a post. A pair of holes 27, which are in the upper right and left corners of the Rear wall 24 are arranged, enable the main support member 23 to continue to the wall panel 16 with appropriate Fastening means, such as a pair of rocker arm bolts 3o, can be secured.

In order to ensure that the furnace module 9 is retained when it is inserted into the support arrangement, it is on the side walls 26a and 26b, a pair of rails 15a, 15b are formed. the Rails 15a, 15b are punched out and bent inward elongated parts of the metal sheet are formed, with openings 59 resulting from this procedure. The rails 15a and 15b extend from the front to the front at the rear over substantially the entire depth of the side walls 26a, 26b.

The side walls 26a, 26b on the support member 23 are provided with inwardly directed flanges 37 on the upper edges, the latter flanges 37 having multiple slots 39 which

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are formed therein near the 4 corners of the support member 23, included. These openings are made along with Similar holes 33 in the cover 36 used to possibly to couple the support member 2 3 to a projecting or cantilevered housing.

The cover 36 is a generally inverted U-shaped member made of a relatively lightweight or thin sheet metal is formed with side walls or arms 34 at right angles from a top wall Or a middle section 35 protrude downwards. the Wall 35, to which reference has already been made in the previous paragraph, is provided with a group of openings 33, which are aligned with a group of slots 39 in the support member 23, such that suitable fastening means such as screws are passable to the assembly including the cover 36 and the support member 23 to to be attached to a hanging or overhead housing. The cover 36 is positioned over the support member 23 so that that whose arms 34 span the side walls 26a, 26b on their outer sides. Aligned to each other (not shown) Holes are provided in cover 36 and support member 23 through which screws are held together these parts are feasible. The outer or outer surfaces of the cover 36 are finished in a conventional manner, an acceptable one. to achieve a pleasing outward-looking appearance of the arrangement.

The main support member 23 also has suitable configurations for supporting a motor-driven exhaust gas conveying device 43 (Fig. 1). including a fan or impeller 42 which is central to the support member 23 and in air connection is arranged with the bottom closure plate 32.

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The device 43 can be fastened to the support member 23 before the module 9 is inserted.

The panel or closure plate 32 serves to close off the bottom wall of the support device. The plate 32 includes tabs 55 along the rear edge thereof, which is provided with slots along the lower edge of the rear wall 24 (FIG. 5) in Stand passport connection. The front edge of the cover plate has an inwardly facing lip 47 that is resilient cooperates with a matching formation on the lower front edge of the module 9 to the front end or to hold the front of the plate 32 in place. The plate has suitable rectangular vents provided, into which air inlet filters 31 are inserted. The base plate 32 can also be provided with a transparent panel 49 over which light emitting devices can be arranged to illuminate the stove heating surface, which is arranged below the oven.

The oven is assembled by connecting the cover 36 and the plate 32 to the main support member 23, thereby a support arrangement or enclosure is achieved that is closed at the top, back, sides and bottom or at the bottom, at the front, however, is open. Module 9

The enclosure is then inserted backwards along the rails 15a, 15b inserted until the back 6 of the module 9 against the ribs 44a, 44b rests.

It should be noted that when the module 9 is within the support device thus formed is arranged, a space between the top wall 35 of the cover 36 and the Top side 5 of the furnace module 9 is formed. Within this space are the one receiving a lamp and the one

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Air directing line 92 and line 80 are arranged. This room is at the front of the Arrangement closed by means of an air-permeable grille 75. According to the general explanation the basic elements of the microwave oven and exhaust gas vent of the invention There is now a detailed explanation of the novel air circulation arrangements provided.

The rear wall 24 of the main support member 23 extends under the bottom side of the microwave oven module 9 in such a way that an essential running space 38 is formed between the plate 32 and the bottom side of the main oven frame 14. This gap or space 38 or this collecting chamber extends horizontally along the longitudinal dimension of the arrangement between the side walls 26a, 26b. The side walls 34 of the cover 36, which cover the side walls 26a, 26b, can also be used or contribute to enveloping the ends of the gap or space 38. It should be noted that the plate 32 from its junction with the rear wall 24 horizontally forward of an enlarged space extending up to a flanging or bending line 4o for forming along a rear portion _/ in which the cylindrically shaped tangential or the Cteblp.selaufrad 42 is arranged. The longitudinal axis of the fan wheel 42 extends parallel to the plane occupied by the rear wall 24 and the bottom side 7 of the module 9. The fan wheel 42 is in turn arranged within an air duct forming part 45 (FIG. 5) of generally J-shaped cross-section, which is connected to and from the rear wall 24

η this is worn. Such a tangential fan works

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operates to draw air in and out of the winged cylinder in one direction the cylinder in a direction which is offset by about 9o * to the direction of flow of the incoming air. In addition, by placing the massive propeller of the blower in the enlarged rear portion of the Space 38 the plate 32 can be inclined upwards towards the front and the module 9 near the lower edge the access door 18 or the door frame 2o cut. The latter feature allows for better visibility of the Space below the arrangement when it is attached in an elevated position. Therefore, by arranging the wheel 4 2 in the preferred position in the lower rear corner according to Figures 3 to 5 generates an inlet air stream 48, the one The direction is changed at a right angle when passing through the fan wheel 42. Greater efficiency This is the result of the arrangement of the fan wheel 42 at the 9o-degree deflection of the flow path of the Airflow 48 as if the impeller 42 were located in some other location.

The pair of protruding ribs 44a, 44b or spacers supported by the rear wall 24 separate the rear wall 24 from the rear 6 of the oven module 9. A vertically extending air duct or duct 46 is formed in this way with the sides passing through the opposing, diagonally extending Ribs 44a, 44b are formed, and the front side and the rear side are formed by the rear side 6 of the oven module 9 or the rear wall 24 are formed. The vertically extending air duct 46 stands along its lower portion in connection with the space 38 in the area at the lower rear part of the arrangement in which the fan wheel 42 is arranged. Consequently form the space 38

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and the conduit 46 adjoining it together a continuous air-carrying conduit, along the exhaust fumes, gases and vapors, as shown generally in FIGS. 3 and 5 by means of an arrow 48 can pass through the arrangement. Such gases pass as indicated by arrow 48 through the Filter 31, are in the space 38 and through this by means of the rotating fan -rads 42 sucked, the such gases up through the line 46 and the opening 71 in the cover 36 and diverted to outside the top of the assembly through a vent 42. Because of the in the Arrangement according to the invention formed air flow path 48 is the arrangement for use not only as a microwave oven but also as a vent hood for one conventional cooker suitably trained. Consequently, the arrangement on the wall or on the floor of a increased wall housing are attached in such a way that the plate 32 with a suitable distance above the Cooking utensils above the surface of a conventional kitchen range is arranged. In this way, the space that is usually covered by a conventional cooker vent hood ingested can be used more effectively. The furnace arrangement according to the invention can therefore take place the usual ventilation hood should be set in such a way that the function of the ventilation hood is restored or maintained will. At the same time, the oven arrangement is conveniently above and near the usual cooking range arranged without any loss of valuable space for a cupboard or worktop. the Vent 52 can of course be in any in a suitable manner with a conventional, wall-mounted

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Fixed ventilation or exhaust gas duct, as can be found in many apartment or household kitchens.

The vent opening 52 is preferably formed on an L-shaped plate 53 that removably overlies the upper rear corner portion of the cover 36. The opening 71 is below a _s opening area of the vent opening 52 and is aligned therewith. The vent opening 52 can then be connected to the overhead exhaust duct in the usual way so that the gaseous vapors can be discharged from the top of a conventional cooker upwards and along the spaces 38, 46 and then through the opening 42 and above the arrangement as shown in FIG. On the other hand, the plate 53 can also be arranged over the upper rear corner section of the cover 36 in such a way that the opening 42 protrudes backwards, behind an upper section of the rear wall 24, the opening area being aligned with the opening 73 in the rear wall 24 (FIG. 5) is. The latter arrangement enables gases flowing into the space 46 according to the arrow 48 to leave the arrangement through the opening 73 in the upper section of the rear wall 24, as shown by a dashed arrow 48a in FIG.

After explaining the nature and use of the arrangement according to the invention as a ventilation hood for a conventional cooker, which is located below the plate 32, is now based on the feature of air circulation or venting the arrangement with respect to the

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Microwave oven cooking space 1o and the control compartment 12 for the electrical control of the oven received,, with particular reference to

FIGS. 3 to 6. An air stream 54

for the microwave oven operating system of the assembly, the latter enters through a latticed air inlet opening 56 (Figure 3) located at the top right-hand end of the front of the assembly above the control compartment front panel. Thereafter, the air stream 54 is sucked horizontally and backwards over the upper right upper side 5 of the furnace main frame 14 directly above the control compartment 12. The upper warid 35 of the upper cover 36 and the upper side 5 of the main frame 14 together form a closed channel for the stream 54 in this area of the arrangement. The air stream 54 is sucked or guided over the upper rear corner of the furnace main frame 14 and then downwardly along an air duct 58 which extends between the rear side 6 of the main frame 14 and the rear wall 24 of the support means 22 on the right side of the diagonally extending Section of the rib 44a is formed as shown in FIG. When the air flow 54 flows through the conduit or channel 58 downward, it is through a series of louvers 6o, which are formed in the rear side 6 of the furnace main frame 14 _/ and sucked into the interior of the control compartment 12 and out. Upon entering the control compartment 12, the stream 54, which previously had a fairly laminar character, flows through and around various electronic and power supply components, such as a transformer 62, thereby interrupting it and turning it into a turbulent air flow, such as the ir Figure 3 through

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a helical flow profile is shown. This turbulent flow is used in general to cool down the electronic components in compartment 12.

After cooling down various electronic and power supply components the air stream 54 is at the low pressure inlet side at the base of an air conveyor or a fan 64 is sucked in by compressing it to a relatively high pressure air volume and is discharged at a high-pressure outlet side 65, which is fed into an opening 66 of a plastic air duct 68 is directed (see. Figure 2, 4). The line or the channel 68 contains a housing 7o in which a usual microwave signals generating magnetron (not shown) is arranged. There's one on the magnetron Series of vertically layered cooling fins or heat exchange plates 72 (Fig. 3) attached between which and over which the high pressure air stream 54 flowing from Fan 64 is output, is directed.

Since the fan 64 can generate a significantly higher volume of high-pressure air than it can pass through the relatively closely spaced plates 72, an air stream 54a is discharged which bypasses the plates 72 on one side. This bypass air flow 54a flows upwards along a ramp 76, which is formed in the channel 68, and through a rectangular opening 78 on the upper side 5 of the furnace main frame 14. The bypass air flow 54a then flows through an exhaust pipe 8o (FIG. 2 ) attached to the top of microwave waveguide 82 and control housing 84, the

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are arranged on the top 5 of the module 9, and is from the arrangement via an air outlet opening 86 and the grid 75 above the oven door 18 are dispensed.

With regard to the main air stream 54 flowing between and through the heat exchanger plates 72, this is directed against the perforated area 88 of the partition wall 16. Here, too, the volume of the air of stream 54 passing through plates 72 will be greater than that for venting the oven chamber or the cooking space 1o is required. In this case, the dimensioning and density of the Perforations in the wall section or the area 88 can be selected so that only the desired volume of venting air can flow through the partition 16 into the cooking space 1o. Any excess Volume of exit air from the plates 72 that is not required to ventilate the boiler room 1o meets on the area 88 of the partition 16 within the limits of the plastic chamber or the plastic channel 68, and deflects laterally upwardly along ramp 76 for communication with bypass airflow 54a finally to leave the arrangement via the outlet opening 86. The volume of airflow 54b that passes through the perforated wall area 88 occurs, circulates then through the cooking space Io for combination with cooking gases, after which the air flow 54b and various Cooking gases exit through the second perforated area 9o formed in the top 5 of the main frame 14 is, and along the guide member 92 flow forward. Finally, the air flow 54 b occurs at the Front of the assembly through a grille

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Exhaust opening 54, which is arranged above the oven door 18 on the side of the assembly that the originally entered air flow 54 is opposite.

It will be noted that the air stream 54 venting the microwave oven is completely separate and is different from the oven vent airflow 48 from entry to exit of the assembly. Therefore, the arrangement is easily adapted to be separate and independent from one another as well as to simultaneous use of the microwave oven air flow system or the cooker ventilation system. This is a particularly advantageous feature of the invention when the microwave oven airflow 54 is not strong enough to actuate an exhaust duct damper mechanism or to overcome, as can be found in the kitchens of some houses.

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Claims (1)

Expectations f 1., arrangement for combining a furnace device with an exhaust gas ventilation hood,
marked by a device (9) which forms a housing for the furnace device and has a bottom side (7) and a rear side (6), a device (23) which forms a support arrangement for the housing and has a rear wall (24), means for spacing the rear side (6) vQn the rear wall (24) to form a first channel-shaped air space (46) therebetween, a plate (32) spaced from the bottom side (7) to form a second air space (38) therebetween, wherein the first and second air spaces (38, 46) with one another are in connection and the plate (32) has an opening (5o) 030010/0802 through the gases and steam from a level below the plate (32) into the second Air space (38) can flow, one of the sides of the second air space (38) enclosing Device to make this channel-shaped, and a device (4 3) for the forced circulation of air from below the plate (32) into the second air space (38) and through the second air space (38) into and through the first air space (46). 2. Arrangement according to claim 1, characterized in that the., Spacer means a pair of raised ribs (44a, 44b) formed in the rear wall (24). 3. Arrangement according to claim 1 or 2, characterized in that the plate (32) horizontally from the Rear wall (24) protrudes by a selected distance up to a bending line (4o) and then extends extends diagonally upward until it engages a bottom portion of the housing (9). 4. Arrangement according to one of claims 1 to 3, characterized in that the enclosing the sides Device has a pair of side walls (26a, 26b) on opposite sides of the Rear wall (24) are formed and along the sides of the housing (9) and the plate (32) after extend in front. 030010/0802 21336 ·· 5. Arrangement according to one of claims 1 to 4, characterized in that the device (43) for forced circulation of air contains a fan (42) which is arranged between the plate (32) and the housing (9). 6. Arrangement according to one of claims 1 to 5, characterized by one arranged above the housing (9) Cover (36). 7. Arrangement according to one of claims 1 to 6, characterized by one arranged in the housing (9) Microwave oven device (1o, 12). 8. Arrangement according to one of claims 1 to 7, characterized by one of the first and the second Air space (38, 46) separate and differing device (58, 6o, 64, 68, 86, 88, 9o, 92, 94) for Ventilation of the furnace device (1o, 12). 9. Arrangement according to one of claims 2 to 8, characterized in that the ribs (44a, 44b) of themselves opposite sides of the rear wall (24) horizontally towards one another up to a point with a first selected Distance and then extend diagonally upwards along the rear wall (24) towards one another to end points extend which have a second selected distance from each other. 1o. Arrangement according to one of Claims 2 to 9, characterized by a tangential fan (42) with a elongated, cylindrically shaped fan, which under the ribs (44a, 44b) between the Plate (32) and the housing (9) is arranged. 0300 10/0802 r ¹ L 2933698 11. An arrangement according to any one of claims 4 to 1o, characterized in that the soaps enclosing device also Ab _- cover (36) having a top (35) and having for the housing (9) a pair of side walls (34) extending from the side edges of the top (35) over the sides of the second air space (38) downwards. 12. Arrangement according to one of claims 6 to 11, characterized by a vent opening member (52) which is removably disposed over part of the cover (36) and the rear wall (34) to to vent the gases and vapors from the first air space (46). 13. Arrangement according to one of claims 7 to 12, characterized characterized in that the cooking device contains a microwave oven (1o). 14. Arrangement according to one of claims 9 to 13, characterized by a fan (42) between the plate (32) and the housing (9) below and between the horizontally extending portions of the ribs (44a, 44b) _# around the gases and Direct vapors upward into the first air space (46) between the diagonally extending portions of the ribs (44a, 44b). 030010/0802