JP2005245206A - Roasting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small-sized roasting apparatus that is readily manufactured and is inexpensive. <P>SOLUTION: In the roasting apparatus 10 for roasting an object of roasting while rotating a rotating drum 14 in a state that the object of roasting is fed to the horizontally disposed cylindrical rotating drum 14, the rotating drum 14 is equipped with an opening part 23 that is formed at one end of the main body of the rotating drum 14 and takes in and out the object of roasting, a tapered part 20 that is widened from the opening part 23 toward the other end of the other end of the main body of the rotating drum 14, a guidance member 22 that is attached to the inside wall of the tapered part 20 and guides the transportation of the object of roasting and a spiral stirring material 18 that is attached to the inside wall of the main body of the rotating drum 14 and extended from the guidance member 22 toward the other end of the main body of the rotating drum 14. The guidance member 22 has constitution that, for example, the parallel sides of a trapezoidal plate are rounded in curbed forms and the long sides of the parallel sides are laid at the tip side of the tapered part 20 and fixed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a roasting apparatus, and more particularly to a home roasting apparatus for soybeans.

  Conventionally, Patent Document 1 discloses a roasting apparatus that can uniformly roast an object to be roasted and can easily take out the object to be roasted after roasting. This mordanting apparatus is provided with a stirring member including a horizontal stirring member extending along the rotation axis direction and an inclined stirring member extending along a direction inclined with respect to the rotation axis direction on the inner surface of the rotating drum. The coffee beans stored in the rotating drum are stirred while being pushed out in the rotating direction by the horizontal stirring member according to the rotation of the rotating drum, and after roasting, the roasted coffee beans in the rotating drum 7 are reverse to those at the time of roasting. In accordance with the rotation of the rotating drum in the direction, the inclined agitating member discharges the rotating drum while moving it toward one end of the rotating drum.

  In this roasting apparatus, a bean charging guide member is provided above the rotating drum, and a bean discharge port is provided below the rotating drum. The peas thrown in from the bean throwing guide member are roasted by the radiant heat from the far-infrared radiating material while being stirred by the horizontal stirring member by rotating the rotating drum. After the roasting is completed, the rotating drum is rotated in the reverse direction to take out the beans from the bean outlet.

JP 2001-333756 A

  However, the roasting apparatus described in Patent Document 1 requires a horizontal stirring member for stirring soybeans and an inclined stirring member for taking out beans. For this reason, manufacture of a rotating drum is troublesome and it is difficult to suppress material cost. Therefore, it cannot be easily used especially for home use.

  In addition, the roasting device described in Patent Document 1 has a bean throwing guide member and a bean outlet, so that there is a lot of space and the size of the device cannot be denied. If the apparatus can be downsized, it can be easily roasted at home, and can be drunk using non-oxidized coffee beans, which is preferable from the health aspect.

  Therefore, an object of the present invention is to provide a small roasting apparatus that is easy to manufacture, inexpensive, and small.

  In order to solve the above-described problems, the present invention provides a roasting apparatus for roasting a roasting object while rotating the rotating drum in a state where the roasting object is carried into a horizontally disposed cylindrical rotating drum. The rotating drum is formed at one end of the rotating drum main body, and has an opening for carrying in and out the roasting object, and a taper that extends from the opening toward the other end of the rotating drum main body. A guide member that is attached to the inner wall of the tapered portion and guides the removal of the roasting object, a mesh portion that is positioned between one end of the rotating drum body and the other end of the rotating drum body, and the mesh portion And a spiral stirrer that extends from the guide member toward the other end of the rotating drum main body.

  Therefore, the present invention provides a small roasting apparatus that can be manufactured without a special device in the rotating drum, and therefore is low in cost by suppressing the manufacturing cost and does not occupy space for carrying in and out the roasting object. Can do.

  The guide member is attached, for example, by rolling the parallel sides of the trapezoidal plate in a curved shape so that the long side of the parallel sides is the tip side of the tapered portion. In addition, it is preferable that the guide member is inclined by about 15 degrees with respect to the tapered portion, and the parallel surface is inclined and connected in a direction orthogonal to the stirring material, since the roasting object can be carried out more.

  The inclination angle of the taper portion is preferably in the range of 20 degrees to 25 degrees with respect to the rotation axis of the rotating drum.

  The mesh portion has a plurality of stainless steel wires orthogonal to each other so that the size of each opening is smaller than the roasting object. Each opening of the net is preferably about 3 mm to 4 mm because it can prevent the roasting object from coming out of the rotating drum when the object to be roasted is soybeans, corn, ginkgo or the like. When the roasting object is smaller than these, a fine mesh may be used, and when the roasting object is larger than these, a coarse mesh may be used.

  The rotating drum is made of stainless steel or the like from the viewpoint of safety on food to be roasted.

  The rotating drum has a rotation speed of 30 rpm, a diameter of 75 mm to 90 mm, a heating means for roasting the roasting object has an electric energy of 300 W to 400 W, a diameter of 10 mm to 15 mm, and the heating The central axis of the means may be 40 mm to 55 mm downward from the central axis of the rotating drum, and 30 mm to 45 mm in the horizontal direction and forward in the rotational direction. In this way, it is possible to realize a size and electric energy that can be sufficiently used at home.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of a roasting apparatus 10 according to an embodiment of the present invention. The roasting apparatus 10 shown in FIG. 1 is roughly divided into a rotating drum 14 placed horizontally, a rod-shaped heater 26 positioned below the rotating drum 14, and a motor 42 capable of rotating the rotating drum 14 in both directions. Is done.

  The rotating drum 14 has, for example, a cylindrical size having a length a of about 90 mm to 120 mm (118 mm in this embodiment) and a diameter b of about 75 mm to 90 mm (83 mm in this embodiment). The rotating drum 14 is made of stainless steel such as SUS304. At one end of the rotating drum 14, a tapered portion 20 is formed with an inclination of 20 ° to 30 ° (22 ° in the present embodiment) with respect to the horizontal direction and a length of about 30 mm to 40 mm (35 mm in the present embodiment). doing. At the other end of the rotating drum 14, a bottom 21 having a disc shape and a length of about 6 mm is formed. The central portion of the rotating drum 14 forms a net 16 that is woven into a stainless wire of about 0.8 m / m (see reference C) so that each opening is 3 mm to 4 mm, for example.

  The opening 23 of the tapered portion 20 has a diameter of, for example, 53 mm to 55 mm (54 mm in the present embodiment). The opening 23 is configured to allow both carry-in and carry-out of soybeans and the like.

  The net part 16 may be formed so that the stainless steel wire is arranged in a horizontal or vertical direction with respect to the bottom part 21, or may be arranged obliquely about 45 ° with respect to this. However, the latter is preferable in terms of easy rotation of soybeans or the like when the rotating drum 14 rotates.

  Inside the net 16, a stirring material 18 made of a stainless steel rod having a diameter of about 3 mm is spirally arranged. One end of the stirring member 18 is positioned at or near the bottom 21, the inside of the net 16 is wound in a strong spiral shape, and the other end is positioned slightly ahead of the boundary between the net 16 and the taper 20.

  The other end of the stirring member 18 is attached to the first surface of the guide portion 22 that guides the carry-out of peas and the like. The second surface of the guide portion 22 is attached to the inner wall of the tapered portion 20. As will be described later, the guide portion 22 is formed by rounding a trapezoidal stainless steel plate.

  One end of the connecting member 24 to the motor 42 side is connected to the center of the bottom portion 21. The other end of the connecting member 24 is accommodated in the mounting member 28 of the motor 42 via the heat insulating plate 12 that partitions the rotating drum 14 side and the motor 42 side.

  By providing the heat insulating plate 12, it is possible to prevent the radiant heat from the heater 26 from being transmitted to the motor 42 side and to roast the beans and the like efficiently. For this reason, the heat insulating plate 12 is formed with a through hole having a size that is necessary and sufficient to allow the connecting member 24 to pass therethrough. The connecting member 24 is preferably made of a heat insulating material.

  The mounting member 28 of the motor 42 includes, for example, an arch-shaped first portion 28a that accommodates the other end of the connecting member 24, and a rectangular second portion 28b that extends horizontally from the bottom of the first portion 28a. And a third portion 28c extending upward on the terminal side of the second portion 28b. The attachment member 28 is made of iron or the like.

  The first portion 28a is formed with a first through hole having the same size as the through hole of the heat insulating plate 12, and an oilless bush 32 having an open end, for example, is accommodated therein. Further, a screw hole for receiving one or more screws 38 for connecting the attachment member 28 and the heat insulating plate 12 is formed in, for example, the upper portion of the first through hole.

  The second portion 28b is formed with one or more openings 30 in order to reduce the weight of the mounting member 28 and improve the heat dissipation efficiency.

  The third portion 28 c is substantially the same shape as the first portion 28 a, and a second through hole through which the motor shaft 36 of the motor 42 is passed is formed. In addition, a screw hole that receives one or more screws 40 that connect the attachment member 28 and the motor 42 is formed in, for example, the upper portion of the second through hole.

  The oilless bush 32 accommodates the other end of the connecting member 24 and a shaft 34 attached to the tip of the motor shaft 36. In order to efficiently rotate the rotating drum 14 by driving the motor 42, the shaft 34 and the connecting member 24 are slightly eccentric in the oilless bush 32. Shaking due to eccentricity is absorbed by the open end of the oilless bush 32.

  Here, the rotation speed of the rotary drum 14 is, for example, 30 rpm. The motor 42 is electrically connected through a wiring 44 to a motor switch 46 that switches the rotation direction of the rotary drum 14. The motor switch 46 is provided with a knob 46c.

  The knob 46c may be switched to, for example, the region 46a side when roasting beans or the like, and may be switched to the region 46b side when carrying out beans or the like. In order to stop the driving of the motor 42, the knob 46c may be switched between the regions 46a and 46b. The motor switch 46 is actually attached to the casing side surface of the roasting apparatus 10 or the like.

  Near the mounting position of the motor switch 46, a heater switch 50 for switching on / off of the heater 26 is mounted. The heater switch 50 has a timer function, and is turned off, for example, 15 minutes after the heater 26 is turned on.

  The heater switch 50 is provided with a bell or the like for notifying that the heater 26 is turned off. The heater switch 50 is electrically connected to the heater 26 via a wiring 52.

  Here, the heater 26 is, for example, an electric heating tube such as a glass tube, a ceramic tube, or a far-infrared tube of 300 W to 400 W at 110 V, or a gas heater having the same thermal power as these. The diameter of the heater 26 is, for example, 10φ to 15φ (14φ in this embodiment). When such a heater 26 is used, radiant heat of about 280 ° C. to 300 ° C. is obtained.

  Alternatively, a smoke removing material 48 made of activated carbon or the like may be provided on the upper portion of the rotating drum 14 in order to remove smoke generated during roasting such as soybeans. In addition, a chaff receiving portion 54 that receives chaff of peas produced during roasting of peas may be optionally provided at the lower part of the rotating drum 14. The chaff receiving portion 54 is preferably a pull-out type and detachable from the main body of the roasting apparatus 10.

  The casing of the roasting device 10 is preferably separable in the vicinity of the heat insulating plate 12 so that the rotary drum 14 and the like can be cleaned. Further, for example, if the connecting member 24 has a double structure and these are connected to each other with pins or the like, the rotary drum 14 can be detached from the main body of the roasting device 10 and cleaning can be performed more easily. preferable.

  Further, the casing of the roasting device 10 is screwed or the like inside to reduce external irregularities. In addition, the casing has a double structure made of stainless steel plate or the like, and the casing surface side is not easily heated. The upper part of the housing is provided with an exhaust port for exhausting smoke generated during roasting.

  Further, the opening 23 side of the housing is not so spaced from the opening 23 so that the soybeans carried from the opening 23 do not spill from the rotating drum 14. In addition, a door for carrying in and out soybeans slightly larger than the opening 23 is provided near the opening 23 of the housing.

  FIG. 2 is a view of the heater 26 and the rotating drum 14 shown in FIG. 1 as viewed from the axial direction. As described above, in the present embodiment, the rotational speed of the rotary drum 14 is, for example, 30 rpm. The heater 26 is, for example, an electric heating tube of 110 V and 300 W to 400 W. The diameter of the rotating drum 14 is 80 mm. The rotating drum 14 is rotated clockwise in FIG. 2 at the time of roasting.

  In the case of this condition, the preferable positional relationship between the rotating drum 14 and the heater 26 is that the center axis of the heater 26 is at the lower left position with respect to the center axis of the rotating drum 14. The horizontal length c between the central axis of the heater 26 and the central axis of the rotary drum 14 is, for example, 30 mm to 45 mm (in this embodiment, the heater 26 is 35 mm using a 300 W heater). Further, the length d in the vertical direction is, for example, 40 mm to 55 mm (in this embodiment, the heater 26 is 45 mm using a 300 W heater).

  When the rotating drum 14 is rotated clockwise in FIG. 2 in order to roast the soybeans carried into the rotating drum 14, many beans are collected in the lower left direction in the rotating drum 14. For this reason, the beans are roasted efficiently.

  Actually, the rotational speed of the rotating drum 14, the wattage of the heater 26, the size of the rotating drum 14, and the positional relationship between the heater 26 and the rotating drum 14 are necessary to add about 3 times the cup. When the coffee beans were roasted, they could be roasted without causing uneven baking.

  In addition, when the central axis of the heater 26 is located at the lower left position with respect to the central axis of the rotary drum 14, the chaff of peas produced during roasting of the peas falls and adheres to the heater 26. Less to do.

  For this reason, it is suppressed that the chaff adhering to the heater 26 burns and unnecessary smoke is generated. Further, since the chaff is difficult to adhere to the heater 26, the heater 26 can be easily cleaned.

  FIG. 3A is a schematic perspective view of the rotating drum 14 shown in FIG. FIG. 3B is a plan view showing a state where the guide portion 22 is expanded. The guide portion 22 is formed, for example, by processing a stainless plate of 30 mm × 52 mm into a trapezoid shape and then rolling it in a mode in which the longitudinal direction is an axis.

  Specifically, a 30 mm × 52 mm stainless steel plate (0.5 mm thick) is processed into a shape as shown in FIG. For example, the length f to the length l are as follows. The length f is 30 mm, the length g is 16 mm, the length h is 2 mm, the length i is 5 mm, the length j is 10 mm, the length k is 12 mm, and the length l is 52 mm. In this way, the angle α is about 40 ° and the angle β is about 60 °. As shown in FIG. 3A, the guide portion 22 is rounded with the second side 22b as a base line using, for example, a press machine so that the angle e between the corners on the bottom side becomes, for example, 10 mm to 20 mm. That's fine.

  The first side 22a that will be positioned on the opening 23 side is longer than the third side 22c that faces the first side 22a. The fourth side 22d on the side connected to the tapered portion 20 has a relatively obtuse corner, and the opposing second side 22b has a relatively acute corner. The guide portion 22 is connected to the inner wall of the tapered portion 20 with the first side 22a facing the opening portion 23 while being shifted by about 15 ° to 40 ° (36 ° in the present embodiment) clockwise.

  When the guide part 22 is connected to the rotating drum 14 under the above conditions, the third side 22c of the guide part 22 and the opening part 23 are located on the same plane. If it is such a connection aspect, all the soybeans can be taken out from the inside of the rotating drum 14.

  Next, a method for roasting beans with the roasting apparatus 10 shown in FIG. 1 will be described. First, the door of the housing is opened, and a required amount of soybeans or the like is carried into the rotary drum 14 from the opening 23. Then close the door. Next, the knob 46c of the motor switch 46 is switched to the 46a side, and the heater switch 50 is turned on.

  As a result, the motor 42 is driven, the rotary drum 14 starts to rotate clockwise in FIG. 2, and the heater 26 is turned on to start heat radiation. The soybeans and the like carried into the rotating drum 14 are repeatedly moved through the rotating drum 14 to the bottom 21 side by the stirring material 18 and return to the opening 23 side by hitting the bottom 21. For this reason, it can be roasted with radiant heat from the heater 26 while stirring the soybeans.

  Thereafter, when about 15 minutes have elapsed since the start of roasting, a bell or the like provided in the heater switch 50 sounds and the heater 26 is turned off to notify the end of roasting. Subsequently, a container is installed below the door of the housing. Then, the door of the housing is opened, and the knob 46c of the motor switch 46 is switched from the 46a side to the 46b side.

  As a result, the rotating drum 14 starts to rotate counterclockwise in FIG. 2, and roasted soybeans and the like in the rotating drum 14 are moved to the opening 23 side in the rotating drum 14 by the stirring material 18. . And the soybeans etc. which reached | attained the induction | guidance | derivation part 22 are carried out from the rotating drum 14, being guided by the induction | guidance | derivation part 22, and enter into a container. By the above procedure, roasted beans that are not oxidized can be obtained.

  In fact, when any of the soybeans to be carried into the rotary drum 14 is marked and stirred, the soybeans reciprocate several times between the opening 23 side and the bottom 21 side. It was found that the mixture was sufficiently stirred.

  In this embodiment, the case where roasted beans are mainly described as an example, but the roasting target can be soybean, ginkgo, corn, chestnut, wheat, Nanjing beans, sunflower seeds, watermelon seeds, etc. . Further, the dimensions and the like of the above-described parts are assumed to be that the roasting apparatus 10 is for home use and roasts about 3 cups of coffee beans. Therefore, when the roasting apparatus 10 is for business use, for example, the design change may be made such as increasing the length a of the rotating drum 14 or changing the heater 26 to an S-shaped continuous curve.

  It can be used for roasting persimmons, soybeans, ginkgo, corn, chestnuts, wheat, Nanjing beans, sunflower seeds and watermelon seeds.

It is a typical lineblock diagram of roasting device 10 of an embodiment of the present invention. It is the figure which looked at the heater 26 and the rotating drum 14 shown in FIG. 1 from the axial direction. It is a typical perspective view of the rotating drum 14 shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Roasting device 12 Heat insulation board 14 Rotating drum 16 Net | network part 18 Stirring material 20 Taper part 21 Bottom part 22 Guidance part 23 Opening part 24 Connecting member 26 Heater 28 Mounting member 28a 1st part 28b 2nd part 28c 3rd part DESCRIPTION OF SYMBOLS 30 Opening part 32 Oilless bush 34 Shaft 36 Motor shaft 38, 40 Screw 42 Motor 44, 52 Wiring 46 Motor switch 46a, 46b Area | region 46c Knob 48 Smoke removal material 50 Heater switch 54 Chaff receiving part

Claims (6)

In a roasting apparatus for roasting a roasting object while rotating the rotating drum in a state where the roasting object is carried into a cylindrical rotating drum placed horizontally,
The rotating drum is
An opening for carrying in and out the roasting object formed at one end of the rotating drum body;
A tapered portion extending from the opening toward the other end of the rotating drum body;
A guide member that is attached to the inner wall of the tapered portion and guides the removal of the roasting object;
A mesh portion located between one end of the rotating drum body and the other end of the rotating drum body;
A helical stirrer attached to the inner wall of the mesh part and extending from the guide member toward the other end of the rotating drum body;
A roasting apparatus comprising: 2. The guide member according to claim 1, wherein each of the parallel sides of the trapezoidal plate is rounded so as to have a curved shape, and the long side of the parallel sides is attached to the tip side of the taper portion. Roasting equipment. 3. The roasting apparatus according to claim 1, wherein an inclination angle of the taper portion is in a range of 20 ° to 25 ° with respect to a rotation axis of the rotary drum. The roasting according to any one of claims 1 to 3, wherein a plurality of stainless steel wires are orthogonal to each other so that the size of each opening is smaller than that of the roasting object. apparatus. The rotating drum has a rotation speed of 30 rpm and a diameter of 75 mm to 90 mm.
The heating means for roasting the roasting object has a power amount of 300 W to 400 W, a diameter of 10 mm to 15 mm,
The central axis of the heating means is located 40 mm to 55 mm downward from the central axis of the rotating drum and 30 mm to 45 mm in the horizontal direction and forward in the rotational direction. Any of the roasting apparatuses. The roasting apparatus according to claim 1, wherein the rotating drum is made of stainless steel.

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