JPH0526030U - Coffee mill - Google Patents

Abstract

(57) [Summary] [Purpose] The discharge tube 8 is cut between the rotary blade 5 and the fixed blade 6.
When the coffee powder discharged from the receiver is stored in the can 13, the static electricity of the coffee powder causes the above-mentioned can 13 to be stored.
To prevent it from being charged. [Structure] An antistatic plate 11.12 having conductivity is attached near or below a discharge tube 8 for discharging coffee powder cut to a predetermined grain size between a rotary blade 5 and a fixed blade 6 to the outside. In addition, the preventive plate 11.12 is electrically connected to a metal part such as the motor 3 or the electrostatic transformer 10 to store the coffee powder from the discharge tube 8 in the receiving can 13.
Is charged with static electricity, the motor 3 is discharged through the antistatic plate 11.12 or is neutralized by an electrostatic transformer.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a coffee mill that continuously cuts coffee beans to a predetermined grain size (roughness).

[0002]

[Prior Art]

 Generally, in this type of coffee mill, a rotary blade is attached to a shaft of a motor supported in a casing or a rotary shaft that is interlocked with the shaft, and a fixed blade facing the rotary blade is supported on the casing side and fixed to the rotary blade. It is configured to feed coffee beans between the blades and cut to a specified grain size.

When the coffee beans are cut between the rotary blade and the fixed blade as described above, static electricity is accumulated in the cut coffee bean powder granules (hereinafter referred to as coffee powder). However, when the coffee powder was discharged from the discharge tube, there was a problem that the coffee powder adhered to the inner surface of the discharge tube due to the electrostatic attraction, and the discharge tube was clogged.

Therefore, the present inventors previously proposed Japanese Utility Model Application No. 61-93548 in order to solve the above problems.

According to the above-mentioned invention, the corona discharger is attached to the discharge cylinder, and the corona discharger is connected to the electrostatic transformer in the main body casing. When the charged coffee powder passes through the discharge cylinder, Although it tries to adhere to the inner surface by electrostatic attraction, the static electricity of the coffee grounds is neutralized by the corona discharge from the corona discharger, so that the coffee grounds are prevented from adhering to the inner surface of the discharge pipe. .

[0006]

[Problems to be solved by the device]

 The conventional coffee mill is configured as described above and can prevent the clogging of the coffee grounds in the discharge canister, but the static electricity accumulated in the coffee grounds is not completely removed. The static electricity of the coffee grounds passing through the center has not been removed, and most of the coffee grounds discharged from the discharge tube to the receiving can is charged with static electricity, so that when the coffee grounds are stored in the receiving can. However, there is a problem in that the receiving can becomes charged and a discharge phenomenon occurs with the human body.

The present invention has been made to solve the above problems, and removes the static electricity of the coffee powder discharged from the discharge tube and stored in the receiving can to prevent the receiving can from being charged. The purpose is to

[0008]

[Means for Solving the Problems]

 In the coffee mill according to the present invention, an antistatic plate is attached to the lower part or the vicinity of a discharge tube for discharging coffee powder, and the antistatic plate is electrically connected to a metal part such as the motor or an electrostatic transformer. It is characterized in that it is configured to remove the static electricity of the coffee grounds from the discharge cylinder via this antistatic plate.

[0009]

[Action]

 According to this invention, when the coffee powder from the discharge cylinder is stored in the can, the static electricity of the coffee powder charges the receiver, but this static electricity is discharged from the motor through the antistatic plate, or It is neutralized by the electrostatic transformer.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 is a longitudinal sectional view showing a coffee mill according to an embodiment of the present invention, FIG. 2 is a front view in which the same portion is cut away, and FIG. 3 is a partial plan view of the same.

In the figure, reference numeral 1 denotes a main body casing made of synthetic resin, which includes a straight cylinder portion 1a and a pedestal portion 1b. Reference numeral 2 denotes a hopper made of synthetic resin, which is provided with a funnel-shaped bean supply unit 2a with a light 2d and a transparent opening / closing lid 2b, and has a concentric circular groove or a convex thickness in the central portion of the opening / closing lid 2b. The lens-shaped viewing window portion 2c is formed by forming the meat portion. Reference numeral 3 denotes a motor fixedly held in the straight cylindrical portion 1a of the main body casing 1, 4 denotes a bottomed cylindrical receiving member fixed to the upper portion of the motor 3, and has a screw groove 4a at the inner circumference of the opening and a bottom. A through hole 4b is formed in the center of the wall. Reference numeral 5 denotes a rotary blade arranged in the receiving member 4, which is fixed to the rotary shaft 4a of the motor 3 extended through the through hole 4b of the receiving member 4 and has a plurality of coffee powders on the outer peripheral portion. The blade 5a for popping out is provided. Reference numeral 6 denotes a fixed blade which is arranged in the receiving member 4 so as to face the rotary blade 5. The fixed blade 6 is provided with a screw groove 6a to be screwed into the screw groove 4a of the receiving member 4, and is rotated by rotating the fixed blade 6. It is configured so that the distance to the blade 5 can be adjusted. Reference numeral 7 is an adjusting lever for rotating the fixed blade 6, 8 is a coffee powder discharge tube connected in communication with the receiving member 4, and 9 is an electrostatic eliminator fixed to the discharge tube 8. It is electrically connected to the electrostatic transformer 10 installed therein. Reference numeral 11 denotes a stainless steel sheet as an antistatic plate attached to the straight tube portion 1a of the main body casing 1 near the discharge tube 8, and 12 denotes a static sheet attached to the pedestal portion 1b of the main body casing 1 below the discharge tube 8. These are sheets 11.12 which are stainless sheets as an electricity prevention plate and are electrically connected to the motor 3. Reference numeral 13 is a receiving can for storing the coffee powder from the discharge cylinder 8. In the figure, 14 is a limit switch for starting the motor 3, and 15 is a lever for operating the limit switch 14.

Next, the operation of the above configuration will be described. First, the opening / closing lid 2b is opened to supply coffee beans into the funnel-shaped bean supply unit 2a, and by driving the motor 3, the coffee beans rotate from the bean supply unit 2a to the rotary blade 5 and the fixed blade 6. Is supplied during this period and cut into a predetermined grain size, and thereafter, is blown outward by the blade 5a and is stored as coffee powder in the receiving can 13 through the discharge cylinder 8. Then, the processing status of the coffee beans in the bean supply unit 2a can be enlarged and visually confirmed through the lens-shaped peep window 2c of the opening / closing lid 2b while illuminating with the light 2d.

However, when coffee beans are supplied from the bean supply unit 2a between the rotary blade 5 and the fixed blade 6 as described above and cut, static electricity is generated in the cut coffee powder, and the static electricity is generated by this static electricity. The coffee powder tries to adhere to the inner surface of the discharge tube 8 due to the suction force, but since the discharge tube 8 is provided with the static eliminating device 9 connected to the electrostatic transformer 11, the coffee that contacts the inner surface of the discharge tube 8 is removed. The static electricity of the powder is neutralized to prevent the coffee powder from adhering to the inner surface of the discharge tube 8.

In addition, most of the coffee powder that passes through the discharge tube 8 except for the one that comes into contact with the inner surface of the discharge tube 8 is not subjected to the antistatic action by the antistatic device 9, that is, a large part thereof. The coffee grounds are charged with static electricity, and when they are stored in the receiving can 13 from the discharge tube 8, the receiving can 13 tries to be charged. The charging of the receiving can 13 is carried out by the motor 3 via the stainless sheets 11 and 12. Thus, the receiving can 13 is prevented from being charged by being discharged. The discharge from the motor 3 is more effective when a paper bag or the like (not shown) is directly set in the discharge tube 8 without using the receiving can 13.

[0015]

[Effect of the device]

 As described above, according to the present invention, a conductive antistatic plate is provided near or below the discharge tube from which coffee powder is discharged, and the antistatic plate is electrically connected to the motor or the electrostatic transformer. Therefore, when electrostatically ground coffee powder is stored in the receiving can from the discharge canister, the charging of the receiving can is prevented by discharging the metal parts such as the motor through the antistatic plate or by static electricity. Neutralization with an electric transformer has the effect of preventing the discharge phenomenon that occurs between the can and the human body.

Further, by making the opening / closing lid provided on the top of the main body casing transparent and forming a lens-shaped viewing window on the opening / closing lid, it is possible to visually check the supply state and the cut state of coffee beans. .

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a coffee mill according to an embodiment of the present invention.

FIG. 2 is a partially cutaway front view of FIG.

FIG. 3 is a partial plan view of FIG.

[Explanation of symbols]

 1 Main body casing 2 Hopper 2a Opening / closing lid 2d Viewing window 3 Motor 5 Rotating blade 6 Fixed blade 8 Discharging cylinder 10 Electrostatic transformer 11 Stainless steel sheet (antistatic plate) 12 Stainless steel sheet (antistatic plate)

Claims (2)

[Scope of utility model registration request] 1. A coffee mill configured to cut coffee beans between a rotary blade driven by a motor and a fixed blade, and discharge the cut coffee bean powder particles through a discharge cylinder. An antistatic plate is attached to the lower part or the vicinity of the discharge tube, and the antistatic plate is electrically connected to a metal component such as the motor or an electrostatic transformer, and discharged through the antistatic plate. A coffee mill configured to remove static electricity of coffee bean powder granules from a cylinder. 2. A coffee mill configured to cut coffee beans between a rotary blade driven by a motor and a fixed blade, and discharge the cut coffee bean powder granules through a discharge cylinder. A coffee mill characterized in that an opening / closing lid is provided on the top of a casing accommodating the motor, and a transparent and lens-shaped viewing window is formed on the opening / closing lid.