阅读说明：本技术 设置有对咖啡粉称重装置的保护装置的咖啡研磨加豆机 (Coffee grinding and bean adding machine provided with protection device for coffee powder weighing device ) 是由 吉奥范尼·玛泽 于 2018-02-22 设计创作，主要内容包括：咖啡研磨加豆机(4)包括：研磨加豆机主体(8)；容纳隔室(12),其包含电动机(16)和至少一个操作地连接到所述电动机(16)的咖啡研磨机(20),配置为将咖啡豆磨成粉；所述咖啡粉的传送器(32)；用于容器(44)的支撑部(40),适合于从所述传送器(32)的输出(36)接收咖啡粉,支撑部(40)通过滑轮装置(52)机械地连接到称重装置(48),称重装置(48)放在中空主体(201)内。有利地,滑轮装置(52)包括将重物从支撑部(40)排放到称重装置(48)的块(56),所述块(56)穿过中空主体(201)的前开口(60)。研磨加豆机(4)包括连接到块(56)的咖啡粉的保护装置(64),以转移和/或增加咖啡粉通过前开口(60)进入中空主体(201)的路径。(The coffee grinding and bean adding machine (4) comprises: a grinding and bean adding machine main body (8); a containment compartment (12) containing an electric motor (16) and at least one coffee grinder (20) operatively connected to said electric motor (16) configured to grind coffee beans into powder; a conveyor (32) of the coffee powder; a support (40) for the container (44) suitable for receiving the ground coffee from the output (36) of said conveyor (32), the support (40) being mechanically connected to a weighing device (48) by means of a pulley device (52), the weighing device (48) being housed inside the hollow body (201). Advantageously, the pulley means (52) comprise a block (56) for discharging the weight from the support (40) to the weighing means (48), said block (56) passing through a front opening (60) of the hollow body (201). The grinder-feeder (4) comprises a protection device (64) of the coffee powder connected to the block (56) to divert and/or increase the path of the coffee powder entering the hollow body (201) through the front opening (60).)

1. Coffee grinder-bean feeder (4) comprising:

-a grinding and bean-adding machine body (8),

-a containment compartment (12) containing an electric motor (16) and at least one coffee grinder (20) operatively connected to the electric motor (16), the coffee grinder being configured to grind coffee beans into powder,

-a conveyor (32) of coffee powder,

-a support (40) for a container (44) suitable for receiving coffee powder from an output (36) of the conveyor (32), the support (40) being mechanically connected to a weighing device (48) by means of a pulley device (52), the weighing device (48) being placed inside a hollow body (201),

it is characterized in that

-the pulley means (52) comprise a block (56) discharging the weight from the support (40) to the weighing means (48), said block (56) passing through a front opening (60) of the hollow body (201),

-the coffee grinding and bean adding machine (4) comprises protection means (64) of the ground coffee connected to the block (56) to divert and/or increase the path of the ground coffee entering the hollow body (201) through the front opening (60).

2. The coffee grinding and bean adding machine (4) according to claim 1, wherein the block (56) has at least one inclined portion (68) located at the entrance of the front opening (60) and external thereto, and comprising at least one layer (72) extending to convey the ground coffee into a position offset from the front opening (60).

3. The coffee grinding and bean adding machine (4) according to claim 2, wherein the inclined portion (68) comprises a pair of layers (72) arranged symmetrically with respect to the front opening (60) and extending to convey coffee powder into a position offset with respect to the front opening (60).

4. The coffee grinding and bean adding machine (4) according to claim 1, 2 or 3, wherein said block (56) comprises a raised portion (76) with respect to an upper input edge (80) of said front opening (60), said raised portion (76) being contained within said hollow body (201).

5. The coffee grinding and adding machine (4) according to claim 4, wherein said raised portion (76) comprises a slope and/or a step.

6. The coffee grinding and bean adding machine (4) according to any claim, wherein, at the entrance of the block (56) through the front opening (60), the protection device (64) comprises an upper housing (92) covering the block (56) at least in the vicinity of the front opening (60).

7. The coffee grinding and bean adding machine (4) according to claim 6, wherein the upper housing (92) includes a fork portion (96) that engages and surrounds the block (56).

8. The coffee grinding and bean adding machine (4) of claim 7 in combination with claim 4 or 5, wherein the fork portion (96) engages and covers the raised portion (76) of the block (56).

9. The coffee grinding and bean adding machine (4) according to any one of the preceding claims, wherein the block (56) has an undercut portion (100) which is curved inwards towards a centreline plane (M-M) of the block (56) with respect to a cross section perpendicular to the centreline plane (M-M).

10. The coffee grinding and bean adding machine (4) according to claim 9, said undercut portion (100) being coupled according to a shaped coupling with a base (104) made inside said hollow body (201).

11. The coffee grinding and bean adding machine (4) according to any one of the preceding claims, wherein the block (56) has a lower appendix (84) extending below a lower input edge (88) of the front opening (60).

12. The coffee grinding and bean adding machine (4) according to any one of the preceding claims, wherein said weighing means (48) is a load cell means.

Prior Art

As is known, there are electric coffee grinders in which a casing or body is identified that contains an electric motor and a grinding chamber in which a grinding tool enclosed is activated by the above motor.

The coffee grinder further comprises a container or conveyor of coffee beans to be ground, which is not placed under the grinding chamber, whereby the coffee beans are carried by gravity towards the grinding chamber.

The grinding powder produced in the grinding chamber is then conveyed to the distribution area.

For example, the dispensing area communicates with means suitable for containing coffee powder, such as a filter contained in a relative filter holder, as better described hereinafter.

It should be noted that a grinder-plus-bean machine is a device for dispensing a predetermined quantity of coffee powder with very small tolerances.

For example, the quantity of coffee powder to be dispensed (after immediate grinding) is a few grams (typically 7 grams), which must be observed very precisely.

For this purpose, there are electric coffee grinders provided with a weighing system for grinding the coffee powder, in which the quantity of ground powder is determined by a feedback system associated with a predetermined selected weight value.

The system acts on the motor control to stop grinding and dispensing to obtain the desired weight value.

In other words, the system immediately weighs the quantity of coffee powder obtained by moving the grinder, which, when a preset value is reached, blocks the movement of the grinder, thus dispensing the coffee powder.

By way of example of the prior art, the following documents are cited: EP2694216B1, WO2015|006244a1, US 5386944A.

The above dispensing area may be shaped to collect coffee in different containers, e.g. an american coffee filter (US 5386944a), a filter holder per espresso machine (EP2694216B1) or parts for different recipes.

Usually, a container for coffee powder is located below the grinding chamber and the purpose of the conveyor is to transport freshly ground coffee to the container.

In some known prior art solutions, the weighing system is located inside the body (US386944A), while in other cases it is located outside the body of the device (EP2694216B 1). In any case, it is necessary to enclose the weighing element in a hollow body in order to protect the elastic element that determines the weighing from foreign elements (for example coffee powder) that would limit the movement of the elastomer (one classical example is a load cell).

Regardless of the positioning of the elastic element which determines the weight measurement, whether inside or outside the machine body, if there is a return element from the elastic measuring element (placed inside the hollow body) to the support element of the coffee powder container, it is necessary to provide protection against the entry of foreign elements into said hollow body, to prevent interference with the elasticity of the elastic means and therefore with the weight measurement.

In other words, if dirt and/or coffee powder were to penetrate into the mechanism of the weighing device, the weight itself would be affected and the system would not be able to guarantee the tight tolerances required by the user.

In particular, the coffee powder must be prevented from entering, since the weight is read by using elastic means, it is necessary to leave coupling gaps between the container, the weighing system and any fixing bodies present.

Although the prior art solutions envisage the use of precision weighing means, they do not guarantee dispensing precision precisely over time due to the infiltration of ground coffee and/or dirt. The only way to overcome this problem of the known solutions is to continuously clean the parts intended for weighing: however, this cleaning is not always easy, since it requires dismantling of the parts of the machine, and is therefore preferably performed only at the end of the day when the machine has dispensed hundreds, if not thousands, of doses of coffee powder, no matter how often.

For this reason, there is no guarantee that the quantity of coffee powder is dispensed continuously during use of the machine.

Furthermore, the known solutions provide a type of corrective and non-preventive maintenance: in other words, there is no device in the weighing mechanism suitable for preventing the infiltration of coffee powder (particularly greasy and prone to sludge formation), but cleaning and regular maintenance are required to remove said coffee powder.

Disclosure of the invention

Therefore, the prior art solutions are inconvenient and impractical; furthermore, it cannot be guaranteed that a precise quantity of coffee powder is supplied in the area of use of the grinding and bean adding machine, unless as a result of special maintenance.

Therefore, a need is felt to solve the drawbacks and limitations mentioned with reference to the prior art.

This need is met by a mill bean feeder according to claim 1.