JP2006234332A - Microwave oven with stirring function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a microwave oven with a stirring function capable of enlarging a range of cooking to roasting of coffee beans or the like. <P>SOLUTION: Microwaves are applied to cooked materials such as coffee beans B, B ..., a stirring member 43 is detachably suspended from a top face 21A side to a floor face 21B side of a cooking chamber A of a microwave oven heating the cooked material by intermolecular friction, and the cooked material is heated while stirred by relative rotation of a turn table 14 and the stirring member 43, thus the even roasted state of coffee beans B, B ... or the like can be achieved in a short time. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to a microwave oven that enables roasting cooking of cereals mainly made of beans, and more particularly to a microwave oven devised so that coffee beans can be roasted in an ideal state within a short time.

  Various types of electric cooking utensils adopting microwave method, IH method, hot air method, superheated steam method, etc. are provided with each feature as cooking electrification progresses and heat is applied to cooking ingredients. ing. Among these, microwave-type cooking utensils, so-called microwave ovens, have the feature that cooking can be completed within a very short time without generating heat conduction time by generating heat in the cooking material itself.

  However, microwave ovens have the disadvantage of being sensitive to the direction of microwave radiation. This is because the electromagnetic wave in the frequency band belonging to the microwave is strong in straightness similar to light, and thus the influence based on the fixedness of the positional relationship between the cooking material and the radiation direction of the microwave is expressed in cooking. Conventionally, the shortcomings of such microwave ovens have been found to be temporarily solved by attaching a turntable that rotates horizontally with the cooking material placed on the floor of the cooking chamber of the microwave oven. Today, instead of installing a turntable that is difficult to clean, a technique for addressing this problem has been proposed by adopting a microwave diffusing means or a microwave multi-directional radiation means in the market. There is a sign of destroying a microwave oven with a turntable.

  Except for special cooking that presupposes that it should be chilled and tasted, it is generally discussed that it is better to taste while cooking is hot immediately after cooking is complete, in terms of flavor, texture and aroma. Absent. This is the same for coffee, for example, and a cup using roasted coffee beans is exceptional. Therefore, it is inevitable that the coffee beans can be roasted easily just before drinking if the short-time superheating performance of the microwave oven is used.

  With such an expectation, when roasting coffee beans with a microwave oven for home use with a turntable, the time required for roasting roasts is as short as expected, but specifically, The following problems occur. The first problem is that the coffee beans that have been cooked at the same time contain a mixture of solids that have been roasted and those that have not yet been roasted. The problem is that there is an insufficient portion of roast roast, that is, roast roast. The second problem is that the scent of coffee is accompanied by a burning odor, thereby impairing the flavor.

  According to the general theory of microwave penetration to cooking materials, microwaves should penetrate into cooking ingredients like coffee beans at once, and no roasting roast will occur, but the above problems actually occur. It is. Therefore, considering this cause, the following conclusion is reached. The coffee beans are present in a random posture in the container used for roasting and overlap or disperse with each other. Therefore, even if a turntable is used, it is considered that unevenness occurs in the degree of exposure to microwaves in the relationship between the state of coffee beans and the direction of microwave irradiation.

  In addition, the roasting of coffee beans, unlike general cooking, requires that the degree of heating reach a burnt area, and the cause of the roasting of the roasted bean is in contact with the portion in contact with the container used for roasting. This is also considered to be due to uneven temperature rise between the unexposed portions. In addition, the cause of the burning smell is that cooking progresses in a state where the burning odor generated from the coffee beans heated to the burning area fills the cooking chamber of the microwave oven without escape, so to speak, the odor is baked on the coffee beans. This is probably because cooking is completed in such a state.

  The present invention is capable of at least roasting coffee beans in an optimal state without unevenness of burning coffee and without burning smell, as well as non-uniform roasting of cereals including soybeans and black beans. It is an object to provide a microwave oven with a stirring function.

  As means for achieving this object, the present invention adopts the following configuration.

  The microwave oven with a stirring function according to claim 1 of the present invention includes an inner cabinet that forms a cooking chamber, an outer cabinet that includes an opening / closing lid on the front surface corresponding to the cooking chamber, and an inner cabinet and an outer cabinet. In a microwave oven comprising an electrical component for generating microwaves built in between the cabinet and a turn device for installing a turntable on the floor of the cooking chamber, the cooking chamber is The stirring member is detachably suspended toward the floor surface, and cooking is possible while stirring the cooking ingredients by relative rotation of the turntable and the stirring member.

  In the microwave oven having the above configuration, since the stirring member attached to the top surface side of the cooking chamber is detachable, it can be used as a normal microwave oven by removing it when cooking without stirring. it can. When cooking that requires stirring, the cooking material is stored in the cooking chamber without attaching the stirring member, and then the stirring member is attached so that the stirring member is set to reach the cooking container containing the cooking material. Can do. When the microwave oven is operated in this state, the turntable on which the cooking container is placed rotates and relative rotation occurs between the stirring table and the stirring member. Therefore, since the cooking material in the cooking container is continuously stirred during cooking, cooking that requires heating to the roasting area like coffee beans can be finished evenly. Can be enlarged.

  The microwave oven with a stirring function according to claim 2 of the present invention is characterized in that the stirring member is actively driven in a direction opposite to the rotation direction of the turntable.

  The microwave oven having the above-described configuration can set the optimum stirring frequency for the cooking material without depending on the rotation of the turntable by actively driving the stirring member. Therefore, for example, even in roast cooking where cooking is completed in a short time when the turntable does not rotate at a sufficient number of revolutions, the cooking material can be sufficiently stirred.

  A microwave oven with a stirring function according to claim 3 of the present invention includes an inner cabinet forming a cooking chamber, an outer cabinet having an opening / closing lid on the front surface corresponding to the cooking chamber, and an inner cabinet and an outer cabinet. In a microwave oven including an electrical component for generating microwaves built in between the cabinet, a stirring member that can be rotationally driven from the top side of the cooking chamber to the floor side of the cooking chamber is detachably suspended. And heating cooking is possible while stirring the cooking material by the stirring member.

  Since the microwave oven having the above-described structure can rotate the stirring member, cooking can be performed while stirring the cooking material with the stirring member even when a turntable is not provided in the cooking chamber, such as coffee beans. Can be roasted suitably without uneven roasting.

  The microwave oven with a stirring function according to claim 4 of the present invention is characterized in that the stirring member can be vertically positioned.

  Since the microwave oven having the above-described configuration can freely set the relative position of the stirring member and the cooking material by adjusting the vertical position of the stirring member, an effective stirring state can be easily realized. In addition, it is possible to expand the applicable range for cooking containers that can be used for cooking.

  The microwave oven with a stirring function according to claim 5 of the present invention forms a duct having a shield member that allows passage of air between the inner cabinet and the outer cabinet while preventing passage of microwaves. The exhaust fan which discharges the air of a cooking chamber is attached to one end, It is characterized by the above-mentioned.

  The microwave oven having the above-mentioned configuration can proceed with cooking while discharging smoke generated in a cooking chamber such as coffee beans with an exhaust fan, thus preventing a burnt odor from remaining in the finished cooking. can do. Further, since the smoke exhausted by the exhaust fan is carried out while prohibiting the leakage of the microwave by the shield member, it is possible to avoid the electromagnetic interference on the human body and nearby electronic devices.

  The microwave oven with a stirring function according to claim 6 of the present invention is characterized in that a ceramic roasting vessel using a glaze containing silicon-based ceramics is attached.

  Porcelain is a material whose temperature rises moderately by microwaves. Therefore, the use of a porcelain roasting container prevents the phenomenon of roasting roasting when the heated cooking material is deprived of heat by the container. The silicon-based ceramics contained in the glaze generate far infrared rays and negative ions. Among these, far-infrared rays synergize with microwaves to promote the progress of roasted coffee such as coffee beans, and negative ions can contribute to mellow the flavor of coffee.

  The microwave oven with a stirring function according to the present invention suspends the stirring member detachably from the top surface side of the cooking chamber to the floor surface side of the cooking chamber, and the relative rotation of the turntable and the stirring member or stirring Since the cooking material can be heated and cooked using microwaves while the cooking material is agitated by the active drive of the member, roasting cooking that requires heating the cooking material to the area to be burned, for example, roasted coffee beans It can be completed easily in a short time without roasting.

  Hereinafter, embodiments of a microwave oven with a stirring function (hereinafter simply referred to as “microwave oven”) according to the present invention will be described with reference to the drawings.

  The microwave oven has a double-structured housing composed of an outer cabinet 10 made of a magnetic metal material and an inner cabinet 20 so that the microwave oven can be used safely for cooking without leaking microwaves. The cooking chamber A for storing the cooking material to be heated is formed by a front open inner cabinet 20 consisting of five surfaces including a top surface 21A, a floor surface 21B, left and right side surfaces 22A and 22B, and a back surface 22R ( 1 and 2).

  The outer cabinet 10 is a box that surrounds the cooking chamber A, that is, the entire inner cabinet 20 with vertical and horizontal spaces S1, S2,... Interposed therebetween, and has a top surface 11A and a bottom surface corresponding to the inner cabinet 20. 11B, left and right side surfaces 12A and 12B, and a back surface 12R. The outer cabinet 10 is provided with an opening / closing door 10D fitted with a finder glass 17 corresponding to the opened front surface of the inner cabinet 20, and various operation buttons are arranged on the side of the opening / closing door 10D. 10A is arranged. A base 13 is attached to the bottom surface 11 </ b> B of the outer cabinet 10, and a metal punching mesh for preventing transmission of microwaves is overlaid on the finder glass 17.

  In the space S3 on the back surface side of the operation unit 10A, an electrical member 50 for generating microwaves including the magnetron 51 as a main member is disposed, and the microwaves excited here are applied to the side surface 22B of the inner cabinet 20. It radiates | emits in the cooking chamber A through the waveguide 52 arrange | positioned corresponding to the formed through-holes 16 and 16. FIG. The microwaves radiated into the cooking chamber A are actually reflected a plurality of times by each surface of the inner cabinet 20, and the cooking chamber A becomes an electromagnetic field in which direct waves and radiation waves are complicatedly mixed. However, direct waves maintain the dominant influence on cooking ingredients.

  On the other hand, the exhaust fan 15 is disposed in the space space S <b> 2 on the opposite side facing the electrical component member 50. The exhaust fan 15 is an axial-flow type small fan in which blades are attached to an outer rotor type motor M3 and disposed in a duct 18 that communicates between the side surface 12A of the outer cabinet 10 and the side surface 22A of the inner cabinet 20. is there. The side surfaces 12A and 22A of the duct 18 are formed with ventilation holes 16 and 16, and the ventilation holes 16 and 16 on the inner cabinet 20 side have an air-permeable shield for preventing leakage of microwaves. A member 17 is applied. The exhaust fan 15 is installed in a direction for discharging the air in the cooking chamber A to the outside.

  A turn device for rotationally driving the turntable 14 is incorporated in a space S4 between the floor surface 21B of the inner cabinet 20 and the bottom surface 11B of the outer cabinet 10. The turntable 14 appears on the floor surface 11B level of the cooking chamber A, and is driven at a low speed of about 30 rpm by the drive motor M1. In addition to the general tray 31, the turntable 14 is provided with ceramic spacers 32, 32... And a ceramic roasting container 33, which are characteristic of the microwave oven of the present invention.

  The porcelain roasting vessel 33 is formed into a large soup bowl shape and fired using a silicon-based glaze. The glaze is based on a commercially available glaze and can be used by mixing 10 to 20% by weight of a commercially available silica fine powder. It has the purpose of adjusting the vertical position of the roasting vessel 33 on the porcelain spacer 32 tray 31, and is formed in the shape of a square plate having a thickness of about 5 mm by the same material as the roasting vessel 33. A plurality of ceramic spacers 32 are attached as one set.

  In the space S1 between the top surface 11A of the outer cabinet 10 and the top surface 21A of the inner cabinet 20, the drive unit 40 of the stirring member 43 is disposed. The drive unit 40 includes a drive motor M2 and a hollow sleeve shaft 42 that is rotationally driven by the drive motor M2 (FIGS. 2 and 3). The drive motor M2 is an angle motor having an output member 41 in a direction orthogonal to the spindle of the motor itself, and holds the hollow sleeve shaft 42 in an upright posture on the axis of the turntable 14. Most of the hollow sleeve shaft 42 protrudes from the space S1 toward the cooking chamber A, and a knurled screw 44 for locking is attached to the lower end of the hollow sleeve shaft 42.

  The agitating member 43 is formed by bending an aluminum bar, and the agitating portion 43R that directly acts on the cooking material is formed in a Katakana m-shape. The upper end side of the stirring member 43 is linear, and this portion is inserted into the hollow sleeve shaft 42 and locked by the knurled screw 44. Therefore, the stirring member 43 can freely adjust the vertical position within the range of the adjustment amount H1 by loosening the knurled screw 44 (FIG. 3). It can also be removed easily. The stirring member 43 is rotationally driven at a speed of about 60 rpm in the direction opposite to the rotation direction of the turntable 14.

  The ceramic spacer 32 can be provided with a center maintaining function (FIGS. 4 and 5). The porcelain spacer 32 in this case has a convex portion 32H on the front surface side and a concave portion 32D on the back surface side, and the convex portion 32H and the concave portion 32D can be fitted with the center CL aligned. Further, the diameter of the convex portion 32H is set to a diameter that fits into the concave portion 33D at the center of the hill of the roasting vessel 33. Therefore, even when a large number of ceramic spacers 32, 32... Are used, the roasting container 33 can be stably supported at the correct position.

  As mentioned above, although the description of embodiment of this invention has demonstrated the microwave oven provided with the turntable 14, what drives the stirring member 43 of this invention positively is a system which does not have the recent turntable 14. The microwave oven can be applied without any problem. This is because, if the stirring member 43 is actively driven, it is not necessary to use relative rotation with the turntable 14 for the purpose of stirring cooking materials such as coffee beans B, B.

It is a perspective view which shows embodiment of the microwave oven of this invention. It is a longitudinal cross-sectional view which shows embodiment of the microwave oven of this invention. It is a perspective view of the principal part in embodiment of the microwave oven of this invention. It is a perspective view which shows the ceramic spacer which is an accessory of the microwave oven of this invention. It is sectional drawing which shows the use condition of the ceramic spacer which is an accessory of the microwave oven of this invention.

Explanation of symbols

A Cooking room B Coffee beans 10 Outer cabinet 10D Open / close door 14 Turntable 15 Exhaust fan 17 Shield member 18 Duct 20 Inner cabinet 21A Top surface 21B Floor surface 33 Roasting container 43 Stirring member 50 Electrical component

Claims (6)

An inner cabinet forming a cooking chamber, an outer cabinet having an open / close lid on the front surface corresponding to the cooking chamber, and an electric component for microwave generation incorporated between the inner cabinet and the outer cabinet, and cooking In a microwave oven equipped with a turn device that appears and installs a turntable on the floor of the room,
With a stirring function that suspends the stirring member from the top side of the cooking chamber to the floor side of the cooking chamber so that it can be heated and cooked while stirring the cooking material by the relative rotation of the turntable and the stirring member microwave.   The microwave oven with a stirring function according to claim 1, wherein the stirring member is actively driven in a direction opposite to the rotation direction of the turntable. An inner cabinet forming a cooking chamber, an outer cabinet having an open / close lid on the front surface corresponding to the cooking chamber and containing the cooking chamber, and an electrical component for microwave generation built in between the inner cabinet and the outer cabinet In the provided microwave oven,
A microwave oven with a stirring function in which a stirring member that can be rotationally driven from the top surface side of the cooking chamber to the floor surface side of the cooking chamber is detachably suspended, and cooking can be performed while stirring the cooking material by the stirring member.   The microwave oven with a stirring function according to any one of claims 1 to 3, wherein the stirring member can be positioned vertically.   A duct having a shield member that allows passage of air while preventing passage of microwaves is formed between the inner cabinet and the outer cabinet, and an exhaust fan that exhausts cooking chamber air is attached to one end of the duct. The microwave oven with a stirring function according to any one of claims 1 to 4.   The microwave oven with a stirring function according to any one of claims 1 to 5, wherein a ceramic roasting vessel using glaze containing silicon-based ceramics is attached.

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