TWI828878B - （無） - Google Patents

Abstract

The present invention realizes a crushing device that can optimally crush an object to be crushed and prevent the crushed object from being fixed. The crushing device (1) of the present invention includes a thermal insulation container (12) containing the crushing unit (11) inside; wherein the temperature in the thermal insulation container (12) detected by the temperature sensor (20) is maintained at a predetermined level. The operation of the first heater (18a) and the second heater (18b) installed in the thermal insulation container (12) is controlled in a temperature manner.

Description

Crushing device

The present invention relates to a crushing device for crushing solid raw materials such as cocoa beans.

As such a grinding device, for example, an electric grinder disclosed in Patent Document 1 is known. This electric grinder includes: an input part having an opening through which the material to be ground is put in and sent to the next stage; a coarse grinding part for coarsely grinding the material to be ground from the introduction and adjustment part; and a part for grinding the material to be coarsely ground a fine grinding section for further fine grinding of the object to be ground; and an adjustment section for adjusting the introduction amount of the object to be ground into the fine grinding part.

Patent Document 1: Japanese Patent Application Publication No. 2018-69136.

Incidentally, in Patent Document 1, the temperature of the introduction area of the pulverized object in the pulverizing area where the pulverized object is pulverized is made higher than the temperature at which the oil content of the pulverized object is extracted. The low setting makes the temperature of the discharge area higher than the temperature at which the oil content of the object to be crushed is extracted, thereby preventing the cocoa bean powders that are the object to be crushed from being fixed to each other.

However, generally speaking, if the cocoa beans which are the object to be crushed are heated to some extent, crushing becomes easy. In particular, if in the early stages of crushing in the crushing device, the cocoa beans become When the material is heated to a desired temperature (a temperature at which crushing can be carried out efficiently), crushing can be carried out optimally.

However, in Patent Document 1, as described above, in the crushing area, in the initial stage of crushing the object to be crushed (introduction area), the temperature is lower than the temperature at which the oil content of the object to be crushed is extracted, Therefore, it cannot be said that the object to be crushed is heated to a temperature that enables efficient crushing. Therefore, the technology disclosed in Patent Document 1 has a problem that the object to be crushed cannot be optimally pulverized.

An object of one aspect of the present invention is to realize a crushing device that can optimally crush an object to be crushed and prevent the crushed object from being fixed.

In order to solve the above-mentioned problems, a grinding device according to one aspect of the present invention includes: a grinding unit including a rotationally driven grinding part, and the solid raw material is grinded by the grinding part; and a temperature-adjusting container that houses the grinding unit. Inside; the temperature detection part detects the temperature in the temperature control container; the heating part is provided in the temperature control container; and the control part maintains the temperature in the temperature control container detected by the temperature detection part at a predetermined level. Temperature mode controls the operation of the heating part.

According to one aspect of the present invention, the object to be crushed can be optimally crushed, and the crushed object can be prevented from being fixed.

1, 2: Crushing device

11: Crushing unit

12: Insulation container (temperature regulating container)

12a:top

13: Feed hopper

13a: Introduction Department

14: Motor

15: Cocoa paste removal rod

16: Take out the exit

17a:First fan

17b: Second fan

17c:Third fan

18a: First heater (heating part)

18b: Second heater (heating part)

19: switch

20: Temperature sensor (temperature detection part)

21: Shell part

22:Recycling and conveying department

23: handle

24: To the hopper receiving department

25:Introduction Department

25a: opening

26:Crush Department

27:Tapered mortar

28: Flat mortar

29: Internal socket

30: External mortar

31: lower mortar

32: Upper mortar

33: Entrance

34:Material Receiving Department

35:Conveying channel

36:Drive Communication Department

37:Central axis

40: Discharge pipe

41: Cocoa paste receiving part

41a:Side wall

42: Mortar sliding surface

44: Prevent adhesion/stirring parts

51, 52: Control Department

112: Insulation container

113: Suction and exhaust components

113a: narrow mouth

114:Exhaust port

115: Suction port

Fig. 1 is a perspective view of a crushing device according to Embodiment 1 of the present invention.

FIG. 2 is an exploded perspective view of the crushing device shown in FIG. 1 .

FIG. 3 is a perspective view of the crushing unit shown in FIG. 1 .

FIG. 4 is an exploded perspective view of the grinding unit shown in FIG. 3 .

FIG. 5 is a perspective view including a longitudinal section of the grinding unit shown in FIG. 3 .

Fig. 6 is a front view of a longitudinal section of the grinding unit shown in Fig. 5 .

FIG. 7 is a block diagram of a control unit that controls the temperature control device included in the grinding device shown in FIG. 1 .

8(a)(b) are diagrams showing the schematic structure of the temperature control device included in the grinding device shown in FIG. 1 .

Fig. 9 is a perspective view of the crushing device according to Embodiment 2 of the present invention.

FIG. 10 is a block diagram of a control unit that controls the temperature control device included in the crushing device shown in FIG. 9 .

FIG. 11 is a diagram showing the schematic structure of the temperature control device included in the grinding device shown in FIG. 9 .

12 (a) and (b) are diagrams showing the arrangement positions of the air intake port and the exhaust port of the temperature control device shown in FIG. 11 .

(Overview of grinding of solid raw materials)

Grinding of solids such as cereals and beans has dramatically expanded its uses by crushing the solids, so it is used for various foods. However, it is also known that it is difficult to efficiently grind a uniform pulverized material and prevent the deterioration of flavor. If attention is paid to crushing efficiency, the particles of the crushed product will become rough and uneven, and wheat flour, buckwheat flour, etc. will lose their smoothness. Not only will the quality of udon noodles and buckwheat be reduced, but also excessive heat will be applied during crushing, which can easily cause problems. Deterioration of flavor due to oxidation. If excess friction heat is added to the crushed material during crushing, the fresh flavor of tea will be lost, and soy milk will have a strong grassy smell. From the old thinking method of slowly rotating the mortar to pulverize the pulverized material, since the generation of frictional heat can be suppressed, it is very reasonable in terms of preventing the deterioration of the flavor of the pulverized material during processing.

The grinding method uses the clearance between the whetstone that rotates like a mortar and the grindstone that is fixed to adjust the particle size of the crushed material. Even if the material is changed from natural stone to ceramics or metals, the basic idea is the same. This is the same in both dry grinding and wet grinding. Buckwheat fruit grinding in buckwheat manufacturing is performed by dry grinding, and soybean grinding in tofu manufacturing is a typical example of wet grinding. Grinding by the stone mortar method is used in various fields. Regardless of dry type or wet type, it is implemented by adjusting the clearance between the rotating grindstone part and the fixed grindstone part so that the particle size is the target of one-stage grinding. In addition, even in a grinder made of metal such as stainless steel, the adjustment of the clearance between the rotating blade and the fixed blade is designed and implemented in such a manner that one-stage grinding can achieve a target size of the crushed object.

For example, in the case of chocolate, a raw material obtained by coarsely grinding roasted cocoa beans called cacao nibs is used. When crushing in shops such as chocolate workshops, a stone mortar method is used, and the clearance between the stone mortars is adjusted in stages. It may be necessary to repeatedly crush the chocolate several times while gradually narrowing the gaps until it becomes the desired smooth chocolate. The size of one grain of cocoa (cacao) used as the raw material is large relative to the clearance, which is disadvantageous. That is, cocoa is gradually and finely pulverized, so it takes time to reach the target particles.

In the grinding of cocoa, the melting point of cocoa is about 35° C., and the friction heat between the mortar and the cocoa nibs when grinding the cocoa nibs is used to form a liquid (paste), and wet grinding is used. The temperature of the cocoa and the mortar during crushing is determined by the result, and has not been controlled in the past. If the temperature is low, the cocoa will not flow in the mortar and will be fixed in the groove and cannot be crushed, which increases the load on the motor. On the other hand, if the temperature is too high, the cocoa will be burned and the quality of the cocoa will be reduced.

[Embodiment 1]

Hereinafter, one embodiment of the present invention will be described in detail. FIG. 1 is a perspective view of a grinding device 1 including a grinding unit 11 as a grinder according to this embodiment. Figure 2 is the crushing device shown in Figure 1 Exploded perspective view of 1. FIG. 3 is a perspective view of the crushing unit 11 shown in FIG. 1 . FIG. 4 is an exploded perspective view of the crushing unit 11 shown in FIG. 3 . FIG. 5 is a perspective view including a longitudinal section of the crushing unit 11 shown in FIG. 3 . FIG. 6 is a front view of a longitudinal section of the crushing unit 11 shown in FIG. 5 . In addition, the crushing unit 11 is preferably made of a material with good thermal conductivity.

(Outline of crushing device 1)

As shown in FIGS. 1 and 2 , the crushing device 1 includes a crushing unit 11 , a thermal insulation container 12 , a hopper 13 , a motor 14 and a cocoa mass extraction rod 15 .

The grinding unit 11 is housed inside a thermal insulation container (temperature regulating container) 12 , and the feed hopper 13 is installed on the grinding unit 11 . The hopper 13 contains solid raw materials. In this embodiment, the case where the solid raw material is cocoa nibs will be described. The motor 14 is provided at the lower part of the crushing device 1 and rotates the crushing part 26 of the crushing unit 11 . The cocoa paste extraction rod 15 is located on the side of the crushing device 1 . The cocoa paste removal lever 15 is rotated downward to take out the cocoa paste (cocoa powder) of the cocoa nibs crushed by the crushing unit 11 from the extraction port 16 .

In the grinding device 1, the grinding unit 11 is detachably fitted to the thermal insulation container 12 for cleaning, and the feed hopper 13 is detachably fitted to the grinding unit 11. In addition, the grinding unit 11 is provided with a handle (not shown), and the grinding unit 11 is attached and detached using this handle.

(Configuration of crushing unit 11)

As shown in FIGS. 3 to 6 , the crushing unit 11 has a housing part 21 at the upper part and a recovery and conveying part 22 at the lower part. The casing part 21 has a handle 23 used when taking the crushing unit 11 out into and out of the heat-insulating container 12 . Inside the housing part 21, a hopper receiving part 24, an introduction part 25 and a crushing part 26 are provided from top to bottom.

The feed hopper receiving part 24 receives the feed hopper 13 arranged on the grinding unit 11 . The hopper receiving part 24 has an opening at the lower end. The hopper 13 receives cocoa nibs and the introduction part 25 receives them. The cocoa nibs are supplied from the hopper 13 via the hopper receiving part 24 . The introduction part 25 has an opening 25a at the lower end.

The grinding part 26 has a conical mortar 27 in the center and a flat mortar 28 around the conical mortar 27 . The tapered acetabulum 27 is composed of an inner acetabulum 29 which is a rotary acetabulum and an outer acetabulum 30 which is a fixed acetabulum. The outer socket 30 has a cylindrical shape, and the inner socket 29 is inserted into the outer socket 30 and has a shape in which the outer diameter gradually becomes smaller from the lower part toward the upper part. The upper end portion of the tapered mortar 27 is located inside the outer mortar 30 and serves as the inlet 33 for the cocoa nibs. The tapered mortar 27 pulverizes the cocoa nibs introduced from the introduction part 25 into coarse cocoa paste.

The flat mortar 28 is composed of a lower mortar 31 which is a rotary mortar and an upper mortar 32 which is a fixed mortar. The lower acetabulum 31 is fixed to the outer peripheral portion of the inner acetabulum 29 and is integrated with the inner acetabulum 29 . The upper acetabulum 32 is fixed to the outer peripheral portion of the outer acetabulum 30 and is integrated with the outer acetabulum 30 . A central axis 37 is provided at the center of the inner socket 29 and the lower socket 31 . The flat mortar 28 pulverizes the coarse cocoa paste formed by the tapered mortar 27 into fine cocoa paste.

The recovery and conveying part 22 has a cocoa paste receiving part 41 including a material receiving part 34 for directly receiving cocoa paste at the upper part, a conveying path 35 connected to the material receiving part 34, and a drive transmission part 36 under the material receiving part 34. . The crushing part 26 is arranged on the material receiving part 34, and the material receiving part 34 receives the cocoa paste formed by the crushing part 26. The conveying path 35 conveys the cocoa paste received by the material receiving part 34 downward. The drive transmission part 36 transmits the driving force of the motor 14 to the central shaft 37 of the crushing part 26 placed on the material receiving part 34, thereby rotating the crushing part 26 (the inner mortar 29 and the lower mortar 31).

In addition, FIGS. 4 and 5 show a state in which the adhesion preventing/stirring member 44 is provided in the inner mortar 29 of the tapered mortar 27 .

(Temperature regulating device)

FIG. 7 is a block diagram of a control unit that controls the temperature control device included in the crushing device 1 shown in FIG. 1 . (a) (b) of FIG. 8 is a diagram showing the schematic structure of the temperature control device included in the grinding device 1 shown in FIG. 1 .

The temperature control device of this embodiment includes a thermal insulation container 12, a first fan (circulation fan) 17a for circulating air in the thermal insulation container 12, and a second fan for taking outside air into the thermal insulation container 12. (cooling fan) 17b, the first heater (heating part) 18a and the second heater (heating part) 18b for heating the inside of the thermal insulation container 12, the first heater 18a and the second heater 18b. The on/off switch 19, the temperature sensor (temperature detection unit) 20 for detecting the temperature in the thermal insulation container 12, and the first fan 17a, the second fan 17b, and the third fan are controlled based on the detection result of the temperature sensor 20. A control unit 51 for driving the first heater 18a, the second heater 18b, and the switch 19. Furthermore, as mentioned above, the grinding unit 11 is detachable from the grinding device 1, so the first fan 17a, the second fan 17b, the first heater 18a, and the second heater 18b are provided outside the grinding unit 11.

The thermal insulation container 12 is a substantially cylindrical container that accommodates the grinding unit 11 inside, and forms a space around the accommodated grinding unit 11 . By heating and cooling the air existing in this space, the temperature in this space is maintained at a predetermined temperature. Details of this predetermined temperature will be described later. In addition, the cylindrical portion of the thermal insulation container 12 is formed of glass, but is not limited to glass.

In addition, when the cylindrical portion of the thermal insulation container 12 is formed of glass, there are the following advantages. That is, the grinding unit 11 is configured to be attachable and detachable to the thermal insulation container, and it is possible to confirm through the glass that the grinding unit is fitted in the correct position (front and back, up and down) in the thermal insulation container. In addition, whether the grinding unit 11 is installed in the grinding device 1 can be confirmed at a glance through the glass. Therefore, if the feeding hopper 13 is installed in a state where the grinding unit 11 is forgotten and the bolt (shutter) of the feeding hopper 13 is mistakenly transferred, the cocoa nibs can be prevented. Roll down into the thermal insulation container 12.

In addition, the presence or absence of errors such as leakage of cocoa paste from the grinding unit 11 can be visually confirmed, and visibility during cleaning inside the thermal insulation container 12 can be improved.

The first fan 17a is composed of, for example, a propeller fan. As shown in FIG. 8, on the upper surface 12a of the thermal insulation container 12, the suction side faces obliquely upward (outside of the thermal insulation container 12) and the exhaust side faces obliquely downward (the thermal insulation container 12). 12), and is driven to suck air from the inside of the thermal insulation container 12 and then exhaust it into the thermal insulation container 12. That is, the first fan 17a functions as a circulation fan that circulates the air in the thermal insulation container 12. Specifically, when the first fan 17a is driven, the air in the thermal insulation container 12 is diverted from the gap on both sides of the first fan 17a to the suction side and sucked, and then is sucked from the exhaust side of the first fan 17a. It is discharged into the inside of the thermal insulation container 12 . Thereby, the air heated by the first heater 18a and the second heater 18b is circulated in the thermal insulation container 12, and the space existing in the portion surrounded by the glass in the thermal insulation container 12 is heated. air. That is, by using the first fan 17a, the air in the thermal insulation container 12 is actively circulated, so that the air in the thermal insulation container 12 can be heated to a predetermined temperature more quickly.

On the other hand, the second fan 17b is composed of, for example, a multi-blade fan (sirocco fan), is provided on the upper surface 12a of the thermal insulation container 12 at a position opposite to the first fan 17a, and sucks outside air from the outside of the thermal insulation container 12. , discharged into the thermal insulation container 12 . When the outside air is discharged from the second fan 17b, the temperature of the air in the heat-insulating container 12 is lowered. That is, the second fan 17b functions as a cooling fan.

The second fan 17b is driven when the temperature inside the thermal insulation container 12 becomes too high due to the circulation of air inside the thermal insulation container 12 by the first fan 17a, thereby lowering the temperature of the thermal insulation container 12. For example, if the temperature inside the thermal insulation container 12 detected by the temperature sensor 20 becomes higher than a predetermined temperature, the second fan 17b is driven to cool the inside of the thermal insulation container 12. Thereby, the temperature of the air in the thermal insulation container 12 is maintained constant.

The first heater 18a is composed of, for example, a sheath heater, is provided in an upper portion of the heat-insulating container 12, and heats the air in the heat-insulating container 12. The second heater 18b is composed of the same packaged heater as the first heater 18a. It is installed in the lower part of the thermal insulation container 12 and heats the air in the thermal insulation container 12. In addition, the first heater 18a and the second heater 18b are not limited to package heaters, and may be other general heaters. For example, general heaters include nichrome, ceramic, carbon (carbon having PTC (Positive Temperature Coefficient) characteristics), halogen, and the like. In addition, as other heating methods, there are heating methods using a Peltier element, a heat pump type, and the like.

From the viewpoint of rapidly heating the air in the heat-insulating container 12, it is preferable to provide both the first heater 18a and the second heater 18b. However, in consideration of air circulation within the thermal insulation container 12, at least the second heater 18b may be provided. This is because the second heater 18b is installed at the lower part of the thermal insulation container 12 and the first fan 17a is installed at the upper part of the thermal insulation container 12. Therefore, the heated air rising in the thermal insulation container 12 and the air from the first fan 17a mixes the air discharged downward, thereby enabling rapid heating while circulating the temperature of the entire air in the thermal insulation container 12.

Here, the purpose of heating the air in the heat-insulating container 12 is to heat the conical mortar 27 and the flat mortar 28 that constitute the crushing part 26 of the crushing unit 11 . That is, the thermal insulation container 12 functions as a mortar temperature adjustment mechanism that adjusts the temperatures of the tapered mortar 27 and the flat mortar 28 .

As shown in FIG. 5 or FIG. 6 , the cocoa paste receiving part 41 is disposed near the rotating side mortar of the pulverizing unit 11 in order to adjust the temperature of the pulverizing unit 11. The side wall 41a is located closer to the sliding surface of the flat mortar 28 ( mortar sliding surface) 42 higher position. In this case, the wind does not directly contact the mortar sliding surface 42 of the flat mortar 28. Therefore, the adhesion and accumulation of the pulverized matter (cocoa paste) on the mortar side surface is suppressed, and clogging of the mortar side surface can be prevented. Furthermore, it may form part of the conveyance path for conveying the object to be crushed. In this case, the frictional heat caused by the grinding is efficiently dissipated, and the mortar temperature does not become too high and can be adjusted to a predetermined temperature. Furthermore, the frictional heat caused by the grinding is conducted to the cocoa paste receiving part 41, and the conveying path for conveying the object to be crushed is kept warm, thereby preventing the objects to be crushed in the conveying path from being fixed. Therefore, the cocoa paste receiving part 41 is preferably made of a metal material (AL: aluminum) with good thermal conductivity.

Here, the melting point of the oil constituting the cocoa beans is 30°C to 40°C. Therefore, if the conical mortar 27 and the flat mortar 28 are heated to 30°C to 40°C, the cocoa nibs can be crushed efficiently. 50% of cocoa beans are composed of oil. If cocoa beans are crushed, the oil will ooze out. Therefore, the temperature of the conical mortar 27 and the flat mortar 28 is brought close to the melting point of the oil constituting the cocoa beans, so that the exuded oil melts and is easily crushed.

As described above, by heating the conical mortar 27 and the flat mortar 28, the cocoa beans can be crushed efficiently, and the cocoa beans obtained by coarsely crushing the cocoa beans in the conical mortar 27 and the flat mortar 28 can also be obtained. It is heated so that the cocoa nibs can be crushed with little force. Therefore, cocoa paste in which cocoa nibs are crushed can be obtained efficiently.

Here, the temperature of the air in the thermal insulation container 12 is maintained at a temperature for setting the temperature of the tapered mortar 27 and the flat mortar 28 to 30°C to 40°C (a temperature higher than 30°C to 40°C). The way is controlled. The temperature control (temperature control) of the air in the thermal insulation container 12 configured as above will be described.

(temperature control)

The control unit 51 controls the first fan 17a, the second fan 17b, the first heater 18a, the second heater 18b, and the temperature in the heat preservation container 12 detected by the temperature sensor 20 to maintain the temperature at a predetermined temperature. Actuation of switch 19. Here, the predetermined temperature refers to a temperature at which the cocoa beans as the object to be crushed can be optimally crushed and the powder of the crushed cocoa beans is not fixed. For example, the temperature of the conical mortar 27 and the flat mortar 28 in the crushing unit 11 is such that it becomes the melting point (solid state) of the oil constituting the cocoa beans. The melting point of the bulk raw material), that is, 30°C to 40°C, controls the driving of the first fan 17a, the second fan 17b, the first heater 18a, the second heater 18b, and the switch 19 to heat the air in the insulation container 12. Warm.

In addition, in order to achieve a predetermined temperature, it is not necessary to drive and control all of the first fan 17a, the second fan 17b, the first heater 18a, the second heater 18b, and the switch 19. Only the first heater 18a may be driven and controlled. , the second heater 18b is turned on/off. Specifically, the control unit 51 controls the driving of the first heater 18 a and the second heater 18 b so that the temperature in the heat preservation container 12 detected by the temperature sensor 20 is maintained at a predetermined temperature. In this case, the temperature inside the thermal insulation container 12 is maintained at a predetermined temperature by the operation of the first heater 18a and the second heater 18b. That is, when the temperature inside the thermal insulation container 12 reaches a predetermined temperature, the first heater 18a and the second heater 18b are turned off. In addition, the predetermined temperature maintained in the heat-insulating container 12 may be at least a temperature equal to or higher than the melting point of the solid raw material.

In addition, the temperature sensor 20 is preferably to directly detect the temperature of the conical mortar 27 and the flat mortar 28 of the crushing unit 11. In order to make the crushing unit 11 freely attachable and detachable from the heat-insulating container 12, it has to be installed on the heat-insulating container 12 side. Therefore, by detecting the temperature of the air in the heat-insulating container 12, the temperatures of the conical mortar 27 and the flat mortar 28 of the grinding unit 11 are indirectly detected.

As described above, even if only the drive control of the first heater 18a and the second heater 18b is performed, the temperature in the heat preservation container 12 can be maintained at a predetermined temperature. Furthermore, by adding the drive control of the first fan 17a and the second fan 17b, the temperature in the thermal insulation container 12 can be quickly and stably maintained at a predetermined temperature.

[Embodiment 2]

Other embodiments of the present invention will be described below. In addition, for convenience of description, components having the same functions as those described in the above embodiments are denoted by the same reference numerals, and description thereof will not be repeated.

Fig. 9 is a perspective view of the crushing device according to Embodiment 2 of the present invention. FIG. 10 is a block diagram of a control unit that controls the temperature control device included in the crushing device shown in FIG. 9 . FIG. 11 is a diagram showing the schematic structure of the temperature control device included in the grinding device shown in FIG. 9 . (a) and (b) of FIG. 12 are diagrams showing the arrangement positions of the air intake port and the exhaust port of the temperature control device shown in FIG. 11 .

(Outline of Crushing Device 2)

As shown in FIG. 9 , the grinding device 2 has substantially the same structure as the grinding device 1 according to the first embodiment, and includes a heat preservation container 112 instead of the heat preservation container 12 . The thermal insulation container 112, like the thermal insulation container 12, accommodates the grinding unit 11 and maintains the conical mortar 27 and the flat mortar 28 constituting the grinding unit 11 at a predetermined temperature. Unlike the thermal insulation container 112 , the thermal insulation container 112 does not circulate internally. Air is sucked in from the outside of the thermal insulation container 112 and exhausted to the outside, thereby maintaining the temperature of the air in the thermal insulation container 112 at a predetermined temperature. The temperature control device including the heat preservation container 112 and adjusting the temperature in the heat preservation container 112 will be described below.

(Temperature regulating device)

In order to achieve air intake and exhaust of the heat-insulating container 112 , the grinding device 2 is provided with a substantially disc-shaped air intake and exhaust member 113 surrounding the introduction part 13 a of the feed hopper 13 .

The air intake and exhaust member 113 is formed with a plurality of slits 113a on concentric circles as shown in FIGS. Suction port 115. Here, the number of slits 113a used by the exhaust port 114 is larger than the number of slits 113a used by the intake port 115.

The air intake and exhaust member 113 is composed of a substantially disc-shaped member as shown in FIGS. 12 (a) and (b), and a plurality of slits 113a having a rectangular shape are arranged concentrically from the center toward the outside. A part of these narrow openings 113a is used as an exhaust port 114 and an air intake port 115. That is, the exhaust port 114 and the air intake port 115 are formed by a plurality of continuous narrow openings 113a.

The exhaust port 114 discharges the air in the thermal insulation container 112 to the outside. The air intake and exhaust member 113 is provided between the hopper 13 and the thermal insulation container 12, so the exhaust port 114 is provided in the upper part of the thermal insulation container 12.

On the other hand, the air suction port 115 takes air into the thermal insulation container 112 . A third fan 17c for sucking air is provided near the air suction port 115. By driving the third fan 17c, external air can be actively introduced from the air suction port 115 and discharged to the thermal insulation container 112. Thereby, the thermal insulation container 112 discharges the internal air to the outside, and takes in the air from the outside. That is, in this embodiment, the air in the thermal insulation container 112 is actively sucked and exhausted.

The third fan 17c is the same as the second fan 17b of the first embodiment, and is composed of a multi-blade fan. Near the third fan 17c (under the thermal insulation container 112), there is provided a fan for passing the heat through the third fan. 17c, and the sucked air is discharged toward the copper discharge pipe 40 at the bottom of the thermal insulation container 112. The discharge pipe 40 is disposed so as to discharge air toward the second heater 18b (heating section) on the bottom surface (lower part) of the thermal insulation container 112 . That is, the discharge pipe 40 blows the air sucked in by the third fan 17 c toward the tapered mortar 27 and the flat mortar 28 of the grinding unit 11 . Thereby, the tapered mortar 27 and the flat mortar 28 are prevented from becoming too high-temperature, and the air heated by the second heater 18b is pushed out by the air discharged from the discharge pipe 40 toward the heat-insulating container 112 already installed. The exhaust port 114 of the air intake and exhaust component 113 on the top surface moves. In this way, the third fan 17c is driven, and the air taken in from the air suction port 115 of the suction and exhaust member 113 is discharged from the discharge pipe 40, circulates inside the heat preservation container 112, and is discharged from the exhaust port 114. be discharged.

In addition, in the air intake and exhaust member 113, as described above, the number of slits 113a used for the exhaust port 114 is larger than the number of slits 113a used for the air intake port 115. This is because the air inlet 115 can be actively sucked in by the third fan 17c, and the exhaust outlet 114 is not provided with an exhaust fan and cannot be forced to exhaust air. Therefore, many narrow openings are used. 113a allows it to vent naturally.

The temperature control (temperature control) of the air in the heat-insulating container 112 configured as above will be described below.

(temperature control)

The control unit 52 controls the first fan 17a, the third fan 17c, the first heater 18a, the second heater 18b, so that the temperature in the heat preservation container 12 detected by the temperature sensor 20 is maintained at a predetermined temperature. Actuation of switch 19. Here, the predetermined temperature refers to a temperature at which the cocoa beans of the object to be crushed can be optimally crushed and the powder of the crushed cocoa beans is not fixed, as described in the first embodiment.

Specifically, the control unit 52 controls the driving of the first heater 18 a and the second heater 18 b so that the temperature in the heat preservation container 112 detected by the temperature sensor 20 is maintained at a predetermined temperature, and also controls the driving of the second heater 18 b. Driving of the first fan 17a and the third fan 17c.

Even if only the drive control of the first heater 18a and the second heater 18b is performed, the temperature in the heat preservation container 12 can be maintained at a predetermined temperature. Furthermore, by adding the drive control of the first fan 17a and the third fan 17c, the temperature in the thermal insulation container 12 can be quickly and stably maintained at a predetermined temperature.

In particular, by controlling the driving of the third fan 17c, external air can be actively introduced from the air inlet 115 of the thermal insulation container 112, and the air that has been overheated in the thermal insulation container 112 can be quickly cooled. Thereby, the air in the thermal insulation container 112 can be stably maintained at a predetermined temperature.

Normally, when the grinding device 2 is continuously operated, the temperature of the tapered mortar 27 and the flat mortar 28 of the grinding unit 11 rises due to friction and becomes higher than a predetermined temperature (30°C to 40°C). If the temperature rises excessively, oil will seep out excessively on the surface of the cocoa nibs, and the cocoa nibs will be fixed to each other and become lumps, which will easily cause clogging at the entrances of the tapered mortar 27 and the flat mortar 28 . In this case, the third fan 17c is driven to introduce external air from the air inlet 115, thereby lowering the temperature of the air in the heat preservation container 112 and lowering the temperatures of the conical mortar 27 and the flat mortar 28 of the crushing unit 11. . This can solve the problem caused by the temperature becoming higher than the predetermined temperature (30°C to 40°C) (the cocoa nibs are fixed to each other and become lumpy).

The control unit 52 controls the driving of not only the third fan 17c but also the first heater 18a, the second heater 18b, and the first fan 17a based on the temperature detected by the temperature sensor 20, thereby enabling the heat preservation container to be heated. Heating control and cooling control of the air in 112.

For example, when the grinding device 2 is started to be used at the beginning of the day, the temperature of the entire device is low at the beginning of use. Therefore, in order to increase the temperature, the first heater 18a and the second heater 18b are turned on. Thereafter, if the grinding device 2 is continuously used, the temperatures of the tapered mortar 27 and the flat mortar 28 of the grinding unit 11 will rise due to frictional heat. When the temperatures of the tapered mortar 27 and the flat mortar 28 have risen excessively, the third fan 17c functioning as a cooling fan is rotated to introduce outside air into the heat-insulating container 112 to lower the temperature of the air and cool the tapered mortar 27 , flat mortar 28.

In addition, once grinding is performed by the conical mortar 27 and the flat mortar 28 of the grinding unit 11, cocoa paste (viscous matter) remains in the conical mortar 27 and the flat mortar 28. When the temperature of the powder becomes lower than the melting point of the oil constituting the cocoa beans, the cocoa powder solidifies in the tapered mortar 27 and the flat mortar 28 . Therefore, the crushing device 2 becomes immobile. Therefore, even when the grinding device 2 is not operating, the first heater 18a and the second heater 18b are brought into the conductive state, and the conical mortar 27 and the flat mortar 28 are maintained at a certain temperature.

[Embodiment 3]

Other embodiments of the present invention will be described below. In addition, for convenience of description, components having the same functions as those described in the above-mentioned embodiments are denoted by the same reference numerals, and description thereof will not be repeated.

The crushing device of this embodiment is formed of the heat-insulating container 12 of the first embodiment and the heat-insulating container 112 of the second embodiment using a heat insulating material instead of glass.

The heat insulating material may be an air layer formed by holding two pieces of glass at a predetermined interval, a foaming material such as foamed polyurethane, or other materials.

By forming the heat-insulating container 12 and the heat-insulating container 112 with a heat-insulating material, it becomes easy to maintain a constant temperature of the air inside.

In addition, the grinding unit 11 is a rotary mortar type consisting of a conical mortar 27 and a flat mortar 28 in which the upper and lower surfaces are in sliding contact with each other. The conical mortar 27 and the flat mortar 28 may be elastically supported. In this case, the flat mortar 28 adopts a sliding rotation method, whereby the mortars slide against each other, thereby effectively generating frictional heat compared with the frictional heat passing through the raw material. Furthermore, the friction heat can be adjusted by elastically supporting the mortars to each other.

In the recovery and conveying section 22 that transports the crushed material crushed by the tapered mortar 27 and the flat mortar 28, in order to prevent the pulverized material from being blocked in the tapered mortar 27 and the flat mortar 28, and the conveying passage 35, the following is proposed. measure.

It is configured so that the wind does not come into direct contact with the tapered mortar 27 and the flat mortar 28 constituting the crushing unit 11 . This is because if the wind directly contacts the conical mortar 27 and the flat mortar 28, the temperature of the conical mortar 27 and the flat mortar 28 will drop excessively, and the crushed materials will be fixed.

Furthermore, the conveyance path 35 of the recovery conveyance unit 22 for conveying the crushed materials is also configured so as not to come into contact with the air in the heat-insulating container 12 . This is because if the wind directly contacts the conveyance path 35, the temperature of the conveyance path 35 will drop excessively and the crushed materials will become fixed.

In addition, the temperature sensor 20 included in the crushing device 1 is a sensor that detects the temperature in the thermal insulation container 12 and indirectly detects the temperatures of the conical mortar 27 and the flat mortar 28 . Therefore, the rotation speeds of the conical mortar 27 and the flat mortar 28 can also be controlled based on the temperature detected by the temperature sensor 20 . For example, when the tapered mortar 27 and the flat mortar 28 rotate at 300 rpm to obtain the desired production amount, if the temperature has increased excessively due to frictional heat or the like, the rotation speed is reduced to lower than 300 rpm to reduce friction and adjust to the set temperature. This can prevent the temperatures of the tapered mortar 27 and the flat mortar 28 from becoming too high.

In addition, the heat-insulating containers 12 and 112 may be fixed to the flat mortar 28 on the rotating side, and may rotate in synchronization with the flat mortar 28 . In this case, the heat-insulating containers 12 and 112 rotate, thereby generating a flow of air around the tapered mortar 27 and the flat mortar 28, thereby promoting heat dissipation. In this case, the rotation speed of the flat mortar 28 may also be controlled based on the temperature detected by the temperature sensor 20 .

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope indicated in the claims. Embodiments obtained by appropriately combining technical methods disclosed in different embodiments are also included in the technology of the present invention. Scope. Furthermore, by combining the technical methods disclosed in each embodiment, new technical features can be formed.

1: Crushing device

11: Crushing unit

12: Insulation container (temperature regulating container)

12a:top

13: Feed hopper

14: Motor

15: Cocoa paste removal rod

16: Take out the exit

17a:First fan

17b: Second fan

18a: First heater (heating part)

18b: Second heater (heating part)

19: switch

20: Temperature sensor (temperature detection part)

Claims (9)

A crushing device, which includes: a crushing unit that includes a rotationally driven crushing part that crushes solid raw materials; a temperature-regulating container that houses the crushing unit inside; and a temperature detection unit that detects the temperature-regulating container. the temperature in the temperature-regulating container; the heating unit is provided in the temperature-regulating container; and the control unit controls at least the operation of the heating unit in a manner to maintain the temperature in the temperature-regulating container detected by the temperature detection unit at a predetermined temperature, The crushing unit also has: a flat mortar for pulverizing the solid raw material; and a receiving portion for receiving the solid raw material crushed by the flat mortar. A part of the side wall of the receiving portion is located at a higher position than the sliding surface of the flat mortar. The crushing device according to claim 1, further comprising a circulation fan for circulating air in the temperature-adjusting container. The crushing device according to claim 2, wherein the heating part is provided at the lower part of the temperature-adjusting container, and the circulation fan is provided at the upper part of the temperature-adjusting container. The crushing device according to any one of Claims 1 to 3, wherein the temperature-regulating container includes an exhaust port for discharging internal air to the outside. The crushing device according to claim 4, wherein the exhaust port is provided at the upper part of the temperature-adjusting container. The crushing device according to any one of Claims 1 to 5, wherein the temperature-adjusting container includes an air suction port for taking outside air into the interior; and an air suction fan for air suction is provided, and the air suction fan is The fan inhales external air from the air inlet in the temperature-regulating container and blows it out into the temperature-regulating container; The control unit controls the operations of the heating unit and the suction fan so as to maintain the temperature in the temperature-regulating container detected by the temperature detection unit at a predetermined temperature. The crushing device according to any one of claims 1 to 3, wherein the predetermined temperature is a temperature above the melting point of the solid raw material. The crushing device according to any one of claims 1 to 3, including: a feeding hopper for feeding the solid raw material into the crushing unit; the crushing unit is removably fitted to the temperature-adjusting container, and the The feed hopper is detachably fitted to the crushing unit. The crushing device according to any one of claims 1 to 3, wherein the temperature-adjusting container is formed of a heat-insulating material.

Images