JPH0423503Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a coffee mill that continuously cuts coffee beans to a predetermined grain size (roughness).

(Prior Art) A conventional coffee mill has a rotary blade attached to the shaft of a motor supported in a casing or a rotating shaft interlocked with the shaft, and a fixed blade facing the rotary blade supported on the casing side. , the coffee beans are supplied between the rotary blade and the fixed blade for cutting, and the cut coffee bean powder is transferred between the rotary blade and the fixed blade by a receiving member that supports the rotary blade. It is intended to be discharged into the receiving tank through an outlet formed on the outer periphery of the opposing part.

(Problems to be Solved by the Invention) However, in the coffee mill having the above structure, when the coffee bean powder is discharged from the outlet, the coffee bean powder is scattered around. This is done by rotating a blade for splashing provided on the outer periphery of the blade, and when the coffee bean powder is splashed by the blade, it is scattered in all directions from the outlet.

Therefore, normally, a tank accommodating part is integrally formed in the casing so as to cover the outlet, and the tank is removably inserted into the accommodating part to receive the coffee bean powder from the outlet. However, in this case, the structure becomes complicated, the shape becomes large, and cleaning of each part becomes difficult, resulting in inconvenience in handling.

On the other hand, by connecting a guiding discharge tube to the outlet, it is possible to prevent coffee bean powder from scattering, but in this case, problems such as coffee bean powder clogging the discharge tube may occur. be.
Furthermore, by using a motor with a large horsepower as the motor that drives the rotary blade and increasing the force with which the blades throw out the coffee bean powder, it is possible to prevent the coffee bean powder from clogging in the discharge tube. It is possible, but in this case not only would a large horsepower motor be required, but it would also be bulky.

(Means for solving the problem) The present invention was devised to solve the above-mentioned problems. In a coffee mill configured to discharge coffee, a corona discharger connected to a high-voltage power source is attached to the discharge tube, and the discharge portion of the corona discharger faces the inside of the discharge tube, so that the coffee passing through the discharge tube is It is designed to provide corona discharge to bean powder particles.

(Function) When the coffee bean powder particles cut between the rotary blade and the fixed blade are discharged through the discharge tube, the discharge tube prevents the coffee beans powder particles from scattering in all directions. Also, clogging of coffee bean particles in the discharge tube is prevented by corona discharge.

That is, the clogging of the coffee bean powder in the discharge tube occurs when the coffee beans are cut between the rotary blade and the fixed blade. This is thought to be due to the fact that the material is charged with static electricity when it is rubbed, and as it passes through the ejection tube, the static electricity attracts and adheres to the inner wall of the ejection tube, and this adhesion grows.

By causing corona discharge in the discharge tube as described above, the atmosphere within the discharge tube is ionized, and when the coffee bean powder carrying static electricity passes through the discharge tube, the static electricity is ionized. It is neutralized in the atmosphere and becomes electrically neutral, and the adhesion force of the coffee bean powder particles to the discharge tube due to static electricity is eliminated, so that there is no clogging of the coffee bean powder particles in the discharge tube.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

In the figure, 1 is a casing equipped with an upright cylindrical part 2, and a motor 3 is installed in the cylindrical part 2 of the casing 1.
A bottomed cylindrical receiving member 5 is supported on the upper part of the motor 3 within this cylindrical portion 2, and a threaded groove 6 is formed on the inner periphery of the opening of the receiving member 5. A through hole is formed in the center of the bottom wall of the rotary shaft 7 extending in the same direction as the cylindrical portion 2.
This rotating shaft 7 is interlocked and connected to the shaft 4 of the motor 3 via a planetary gear mechanism 8, and a plurality of protruding plates are connected to the rotating shaft 7 in the receiving member 5 on the outer periphery. A rotary blade 9 having a wing plate 10 is loosely inserted so as to be relatively rotatable, and a bean supply port 13 having a funnel-shaped bean supply port 13 is provided on the outer periphery with a screw groove 12 that can be screwed into the screw groove 6 of the receiving member 5. A movable member 11 is formed and is held by the receiving member 5 by screwing the screw grooves 6 and 12 into the movable member 11.
A fixed blade 14 is attached to the lower part of the fixed blade 14.
is made to face the rotary blade 9. Further, an arm 15 is provided protruding from the movable member 11, a lever rod 16 is pivotally attached to the arm 15, and a locking rod 17 is supported, and one end of the locking rod 17 is attached to the lever rod 16.
The other end of the locking rod 17 is thrust into a plurality of locking holes 18 formed on the casing side, whereby the movable member 1
The rotation of the lever rod 16 relative to the receiving member 5 is locked, and the locking rod 17 is pulled out by swinging by gripping the lever rod 16, and the locking rod 17 is released from the locking hole 18... As a result, the locking of the movable member 11 is released, and by rotating the movable member 11 while holding the arm 15 in this state, the fixed blade 14 is moved away from or close to the rotary blade 9. That is, the distance between the rotary blade 9 and the fixed blade 14 is changed and adjusted, and the cut grain size of the coffee beans, so-called roughness, is adjusted.

On the other hand, an opening/closing lid 2 is placed on the cylindrical portion 2 of the casing 1.
A hopper section 19 having a diameter of 0 is formed, a lower end opening of the hopper section 19 is connected in communication with the bean supply port 13 of the movable member 11, and the coffee beans in the hopper section 19 are passed through the bean supply port 13. The receiving member 5 is configured to be supplied between the rotary blade 9 and the fixed blade 14, and the receiving member 5
A discharge tube 22 is configured to extend forward and downward from an outlet 21 formed in the outlet 21 to discharge the cut coffee bean powder. Further, a corona discharger 25 is fitted into the through hole 23 formed in the discharge pipe 22,
The discharge part 26 of the discharger 25 is placed inside the discharge pipe 22, and the discharger 25 is connected to the high voltage power supply part 24 installed inside the casing 1.

Further, the rotary shaft 7 into which the rotary blade 9 is loosely inserted has a length such that it passes through the bean supply port 13 of the movable member 11 and projects into the hopper portion 19.
A coil spring 27 is inserted into the coil spring 27 , one end of the spring 26 is locked to the upper part of the rotating shaft 7 , and the other end of the spring 27 is locked to the rotary blade 9 to transfer the rotational force of the motor 3 . It is configured to be transmitted to the rotary blade 9 via a spring 27.

In the figure, 28 is a tank for storing coffee bean powder.

The coffee mill of the present invention is constructed as described above, and by charging a predetermined amount of coffee beans into the hopper part 19 and driving the motor 3, the coffee beans are delivered from the bean supply port 13 to the rotating rotary blade 9. and the fixed blade 14, and cut into a predetermined particle size, and the cut coffee bean powder particles are splashed outward by the vane plate 10 that rotates together with the rotary blade 9, and are sent to the outlet. 21 to discharge pipe 22
It is discharged (supplied) into the tank 28 through the .

Therefore, scattering of the discharged coffee bean powder in all directions is prevented by the discharge tube 22, and clogging of the coffee bean powder in the discharge tube 22 is prevented by corona discharge by the corona discharger 25. This will ensure that it is prevented.

On the other hand, when coffee beans are supplied from the bean supply port 13 between the rotary blade 9 and the fixed blade 14 as described above, a bridging phenomenon occurs within the bean supply port 13.
Coffee beans tend to accumulate near the bean supply port 13, but there is a rotating shaft 7 inside this bean supply port 13.
enters the coffee beans, and since a coil spring 27 is wound around the rotating shaft 7, the coffee beans are given an agitating action by the rotation of the spring 27 and a feeding action by the spiral, thereby destroying the bridging phenomenon. At the same time, the coffee beans are forcibly sent out.

Furthermore, if foreign objects such as pebbles are mixed into the coffee beans to be cut as described above, the foreign objects will be caught between the rotary blade 9 and the fixed blade 14. In such a case, the motor 3 The rotational force acts to reduce the diameter of the coil spring 27 against its elasticity, in other words, the impact force when a foreign object is bitten is absorbed and relaxed by the coil spring 27 and acts directly on the rotary blade 9. Since this will cause an overload to be applied to the motor 3, the connection circuit to the power supply of the motor 3 should be connected to the power supply by using a breaker, etc. The motor 3 is opened and the operation of the motor 3 is stopped.

(Effects of the invention) As explained above, the coffee mill according to the invention discharges the coffee bean powder cut between the rotary blade and the fixed blade through the discharge pipe, and the coffee beans at the time of discharge are It is possible to eliminate the scattering of powder and granules in all directions, and also to reliably prevent clogging of coffee bean powder and granules in the discharge tube by discharging corona from the corona discharger attached to the discharge tube. I was able to obtain it.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view thereof, FIG. 2 is a longitudinal sectional view thereof, FIG. 3 is a plan view of the rotary blade, and FIG. 4 is a longitudinal sectional view thereof. 1... Casing, 3... Motor, 4... Motor shaft, 7... Rotating shaft, 9... Rotating blade, 14...
... fixed blade, 22 ... discharge tube, 24 ... high voltage power supply section, 25 ... corona discharger, 26 ... discharge section.

Claims (1)

[Scope of utility model registration request] In a coffee mill configured to discharge coffee bean powder particles cut between a rotary blade and a fixed blade through a discharge tube, a corona discharger connected to a high voltage power supply section is attached to the discharge tube, A coffee mill characterized in that the discharge part of the corona discharger is configured to face the inside of the discharge cylinder so as to discharge corona to coffee bean powder particles passing through the inside of the discharge cylinder.