JPH0745197Y2 - Bottom cover attachment device for roasting containers - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a bottom cover attaching device for a roasting container for roasting raw beans of coffee by heating with hot air, particularly a heat-resistant glass roasting container. is there.

[Conventional technology]

The roasting container initially examined for roasting raw beans as described above is made of heat-resistant glass in order to facilitate observation of the roasted state of raw beans of coffee during roasting. It is a cylindrical container because it is rotated by a fixed rotating shaft.

Therefore, it is necessary to firmly fix the bottom cover with the rotating shaft fixed to this cylindrical heat-resistant glass container,
There is a problem that if you try to fix the metal bottom cover to this glass cylindrical container by applying pressure by mechanical caulking, the container will crack.On the other hand, glass products have large variations in their dimensions. Therefore, they cannot be fixed with the same amount of mechanical caulking.

Therefore, it was studied to fix both by using a high temperature adhesive, but there is a problem in obtaining an adhesive that withstands high temperature and its workability and appearance, and it is concluded that the assembly quality level deteriorates and it cannot be practically adopted. Reached

[Problems to be solved by the device]

The present invention was made in order to solve the problem of fixing a metal bottom cover to a heat-resistant glass cylindrical container as described above by assembling, and the bottom cover is made into a heat-resistant glass cylindrical container. The problem to be solved is to provide a bottom cover attachment device for a roasting container that can be firmly fixed by press fitting.

[Means for Solving the Problems]

As a means for solving the above problems, the bottom cover attaching device of the roasting container of the present invention is fitted on the bottom side of a cylindrical container made of heat-resistant glass and fixed on the outer peripheral side surface of the metal bottom cover, The bottom cover is preferably formed of a heat-resistant glass cylinder by forming a flat portion recessed inward from the outer peripheral surface by a press or the like at a plurality of locations and providing a dimple protruding on the inner surface side on the flat portion. By press-fitting into the cylindrical container, the flat portion acts as a spring and is tightened to the outer peripheral surface of the cylindrical container, and the dimple projection is pushed into the outer peripheral surface of the cylindrical container to be firmly attached.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.
1 is a perspective view of a roasting container in a disassembled state according to an embodiment of the present invention, FIG. 2 is an enlarged side sectional view of the bottom cover of FIG. 1 taken along the line AA, and FIG. 3 is of FIG. Bottom cover B-
FIG. 4 is a front view in the B direction, and FIG. 4 is a vertical cross-sectional view of the roasting device in which the roasting container of FIG. 1 is set.

First, in the roasting device incorporating the roasting container of this embodiment shown in FIG. 4, the transparent heat-resistant glass roasting container 21 shown in the exploded view of FIG. 1 is inclined rightward and downward in the drawing. It is fixed to the rotating shaft 28 with a nut 23 via a washer 25, a wave washer 27, etc., and the rotating shaft 28 is rotated by a drive motor 34 via the heat shield coil 2 in FIG. Roasting is carried out by rotating around the axis of the rotary shaft together with the stirring blade 3 fixed at various angles.

The stirring blade 3 is provided with a large number of holes 3A, and the hot air H sucked from the turbo fan 6 rotated by the motor 5 and heated by the heater 7 is indicated by an arrow in the roasting container 21.
It is designed to be sprayed obliquely downward inside, and the hot air H heats the raw beans of coffee that have been supplied in advance in the roasting container 21 while being stirred by the stirring blade 3, and the hot air H is stirred by the stirring blade 3. The roasting will be carried out evenly after passing through the large number of holes 3A.

In addition, the raw beans in the roasting container 21 roasted while being stirred peeled off from the skin, and along with the exhaust heat of the arrow He used to heat the raw beans, through the holes of the chaff filter 29 in FIG. The chaff box 18 is dropped and stored, but the chaff in the chaff box 18, that is, the bean peel, is appropriately taken out and discarded.

Next, the fixed side of the rotary shaft 28 of the roasting container 21 is a bottom cover 21B provided with a fan-shaped hole 21A, and this bottom cover 21B has a fan-shaped hole 22B similar to the above as shown in FIG.
A shutter 22 having a is provided so as to be able to rotate together with the roasting container 21, and the fan-shaped hole 21A is closed by the shutter 22 during roasting, but after the roasting, this shutter is closed. By inserting the tip of the stopper rod 11 into the recess 22A provided on the outer periphery of the shutter 22, the shutter 22 is locked, and the roasted beans have the fan-shaped holes 21A and 22B.
It is discharged directly to the outside via a free-flowing device, or as in this embodiment, this roasting device is connected to a crushing device for crushing roasted beans and a filtering device for extracting coffee liquid from the crushed coffee powder. If it is incorporated into an integrated coffee maker, it will fall into the inlet of the crusher via a chute or the like.

The air flow path sucked by the turbofan 6 to the heater 7 for generating the hot air H supplied to the roasting container 21 is
Since air is taken in from the air inlet 9 as shown by the arrow a so as to pass around the drive motor 34 of the rotary shaft 28 of the roasting container 21 shown in FIG. 4, the drive motor 34 and the turbocharger are driven by the taken-in air a. The motor 5 for the fan 6 is air-cooled.

The drive motor 34 is shielded from the roasting portion side by the heat shield plate 10.

In the above roasting device, the roasting container 21 is set to a predetermined position in a state where the roasting container 21 is filled with an appropriate amount of raw coffee beans, and the main switch is started to drive the roasting device. At the same time that the motor 34 is driven, the motor 5 of the turbo fan 6 is also driven, and the heater 7 is also energized so that the hot air H from the hot air generating unit 12 rotates.
Roasting is performed by spraying diagonally downward toward the bottom where coffee beans are stored.

In this state, the bean peel peeled from the coffee beans, that is, the chaff, falls into the chaff box 18 from the hole of the chaff filter 29 together with the exhaust heat of the arrow He, while the exhaust heat He is exhausted from the exhaust heat discharge port 13. To be done.

During this time, the roasted state of the coffee beans can be easily observed through the transparent heat-resistant glass outer cylinder of the roasting container 21.

When the roasting operation as described above is completed, a timer or the like is activated, and after the heater 7 is de-energized, cool air is introduced into the roasting container 21 for an appropriate time to cool the coffee beans, and then the solenoid 14 is turned on. It operates and pushes up the stopper rod 11,
When the tip of the roasted coffee beans is fitted into the recess 22A of the shutter 22 and the rotation of the shutter 22 is stopped, the roasted coffee beans are discharged from the passage 8 through a fan-shaped hole 22B provided in the shutter 22 due to a natural height difference. It

Therefore, as shown in Fig. 1, a cylindrical container 21G made of heat-resistant glass
And a wall-shaped bottom cover 21B for fixing the rotary shaft 28 thereof.
Cylindrical container 21G of roasting container 21 consisting of and bottom cover 2
In order to assemble with 1B, as shown in FIG. 3, on the outer peripheral side surface of the bottom cover 21B made of metal, a flat portion 30 recessed inward from the outer peripheral surface is formed by pressing and the flat portion 30 is As shown in FIG. 2, a dimple 31 protruding from the inner surface side thereof, that is, the side in contact with the cylindrical container 21G is provided.

By adopting the attachment device of the bottom cover 21B of the roasting container 21 having the above configuration, the flat portion 30 formed on the outer peripheral side surface of the bottom cover 21B, when the bottom cover 21B is pressed into the cylindrical container 21G, It is pushed and expanded in the state of the broken line in the direction of arrow E in FIG. 3 to function as a spring, making it difficult for both to come out after press fitting, and the cylindrical container 21G is clamped and fixed, and the dimple 31 is a heat-resistant glass cylinder. Container 21
It will hit the outer peripheral surface of G at a point, and it will be difficult to fit into the outer peripheral surface of the glass.

In this case, it is important to make the gap shown by C in FIG. 2 uniform, but since the gap between the dimple 31 portion of the flat portion 30 and the outer peripheral surface of the cylindrical container 21G becomes particularly large and conspicuous, R at both ends of the flat portion 30 shown by the arrow R in FIG. 3 should be as large as possible.

Further, although four flat portions 30 and four dimples 31 are provided in the above-described embodiment, each flat portion 30 and dimple 31 may be provided in a single number or in a plurality of two or more.

[Effect of device]

As explained above, in the roasting machine for coffee beans,
If a heat-resistant glass cylindrical container is used as the roasting container so that the internal roasted state can be easily observed, the bottom cover mounting device of the present invention can be used to attach the bottom cover to the glass-made container. There is an effect that the glass container can be securely and firmly fixed, the glass container can be prevented from being damaged, and the manufacturing cost thereof can be reduced.

Further, there is an advantage that the bottom cover attaching device of the present invention can sufficiently absorb the dimensional variations in the products of commonly known glass containers.

[Brief description of drawings]

FIG. 1 is a perspective view of a roasting container in a disassembled state in an embodiment of the present invention, FIG. 2 is an enlarged side sectional view of the bottom cover of FIG. 1 taken along the line AA, and FIG. FIG. 4 is a vertical cross-sectional view of the roasting device in which the roasting container is set, and FIG. 21 …… Roasting container, 21B …… Bottom cover, 21G …… Cylindrical container, 30 …… Flat part, 31 …… Dimples.

Claims (1)

[Scope of utility model registration request] 1. A flat portion recessed inward from the outer peripheral surface of a bottom cover which is fitted and fixed to the bottom side of a cylindrical container made of heat-resistant glass, and an inner surface of the flat portion is formed. Bottom cover attachment device for roasting containers with dimples protruding to the side.