RU2030896C1 - Coffee mill - Google Patents

Abstract

FIELD: domestic devices. SUBSTANCE: coffee mill has casing, working chamber, coffee bean milling chamber, cover, electric engine with shaft carrying knife. Coffee mill os further provided with petalous impeller mounted on electric engine shaft and leaf spring secured on working chamber inner wall. Coffee mill milling chamber is made in the form of barrel rigidly fitted onto sleeve, which is secured on shaft in axial alignment with impeller and knife. Pin disposed in barrel bottom is connected with free curved end of leaf spring for imparting vibrations to barrel. Moreover, inertial roller is mounted on barrel bottom for engaging with impeller petals. Slot for receiving barrel edge is extending along perimeter of cover lower surface. Working chamber has discharge window. Bottom of working chamber is made inclined. EFFECT: increased efficiency and enhanced reliability in operation. 1 dwg

Description

 The invention relates to household appliances, and more particularly to coffee grinders, and may find application for grinding coffee beans, black pepper, etc.

 A known design of the device for grinding coffee beans, which is a housing with an electric motor installed in it, a shaft with chopping knives, a hopper for beans, a perforated bottom and a chamber for ready grinding.

 A disadvantage of the known design is the increased expenditure of time for grinding and the limited quality of the grinding, as periodic clogging of the perforated bottom by grinding particles occurs.

 The aim of the invention is to reduce the time spent on grinding, improving the quality of grinding.

 This goal is achieved by the fact that in the device for grinding coffee beans, including a housing, an electric motor, a shaft with chopping knives, a hopper for beans, elements are introduced that create vibration through a sifting cup, a petal impeller sitting rigidly on a knife shaft, transmitting a periodic shock load with petals on the inertia roller of the sifting cup, rigidly fixed by the bottom center on the sleeve, sitting coaxially with the blade impeller and knives on the same shaft, and the elastic leaf spring is rigidly fixed at one end the inside of the casing of the device for grinding coffee beans, the other curved end grabs the pin of the sifting cup, thereby turning the sifting cup by a certain angle and returning it to its original place, thereby creating vibration, the frequency of the multiple speed of rotation of the shaft and the number of impeller blades, in addition, the top part of the device for grinding coffee beans (cover) is made with a hinge and a deep groove located on a circle from the inside under the upper part of the sifting cup, and the bottom of the chamber and with a strong inclination towards the discharge window.

 New in the proposed device in comparison with the prototype are the following features. Introduced elements that create a vibration for sifting ground coffee in the form of a sifting cup, flap impeller, inertial roller, pin and elastic leaf spring. The upper part is made with a deep groove located circumferentially from the inside under the upper part of the sifting cup. The bottom of the finished grinding chamber is made with a large slope towards the discharge window.

 Distinctive features create accelerated sifting of ground coffee, improve the quality of grinding, prevent the contents of the sifting glass from spilling out over the upper edge when grinding, ensure that ground coffee flows to the discharge window of the device for grinding coffee beans.

 In FIG. 1 schematically shows a device for grinding coffee beans with a partial cutout of the side wall and parts of the elements.

 The device comprises a housing 1, a cover 2 with a groove 3 and a hinge 4, a sifting cup 5 sitting on a sleeve 6, knives 7 sitting on a knife shaft of an electric motor, a shaft 8, an electric motor 9, a petal impeller 10, an inertial roller 11, a pin 12, a sheet spring 13, inclined bottom 14, unloading window 15.

 The device is used as follows: the cover 2 with a groove 3 rises by means of a hinge 4 located on the housing 1, the required number of coffee beans is poured into the sifting cup 5, after that the cover 2 with a groove 3 is lowered, after which electric power is supplied to the electric motor 9, which began to rotate with the knife the shaft 8 rotates the knives 7 sitting on it, which, in turn, grind coffee beans in a sifting cup 5, rigidly sitting on the sleeve 6, located coaxially with the knives 7 and the lobe impeller 10, which when rotated on the shaft 8 produces a periodic shock load on the inertial roller 11 located on the sifting cup 5, turning it at a certain angle, the petal of the petal impeller 10 jumps off the roller 11, the curved part of the leaf spring 13 and the pin 12, which play a double role - do not allow the sifting cup to rotate and return it to its original place, thereby creating a vibrational effect on the sifting cup, thereby accelerating the sifting through the small cells of the sifting cup 5 to the inclined bottom 14, after which the ready-to-use l poured into the prepared volume through the discharge window 15.

 The proposed design provides, compared with the prototype, reducing the time required for grinding and improving the quality of grinding, which consists in creating vibration for grinding during screening.

Claims (1)

 A coffee grinder comprising a housing, a working chamber, a grain grinding chamber, a lid, an electric motor, on the shaft of which a knife is mounted, characterized in that it is additionally equipped with a leaf spring mounted on the motor shaft of the electric motor and a plate spring fixed to the inner wall of the working chamber, the grinding chamber is perforated a glass rigidly sitting on a sleeve placed on a shaft coaxially with a blade impeller and a knife; at the bottom of the glass there is a pin connected with the free curved end of the plate A spring is used to provide a vibrational effect on the glass, and an inertial roller is used to interact with the impeller petals. At the same time, a groove is formed along the perimeter of the lower surface of the cover to accommodate the edge of the glass, the working chamber is equipped with a discharge window, and its bottom is made inclined.

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