A coffee bean cold grinder and coffee machine comprising the same

Abstract

The utility model provides a kind of coffee bean cold mill, including bean mill box, bean mill subassembly, bean storage tank and powder storage box, bean mill space is equipped in bean mill box, bean mill subassembly is installed in bean mill space, and bean mill subassembly includes fixed millstone, cold water circulation pipe, cold water circulation connector and rotary millstone, fixed millstone is located at the top of bean mill space and is fixed to the inner wall of bean mill box, cold water circulation pipe is covered in fixed millstone, cold water circulation connector is installed on bean mill box and is connected with cold water circulation pipe;Rotary millstone is rotatably arranged in bean mill space and corresponds with fixed millstone;Bean storage tank is installed in one end of bean mill box equipped with fixed millstone and is communicated with bean mill space;Powder storage box is detachably arranged in one end of bean mill box away from bean storage tank, and powder storage box is communicated with bean mill space.The utility model further provides a coffee machine comprising coffee bean cold mill.The utility model can consume part of heat generated in the process of grinding coffee beans, and further realize the effect of grinding coffee beans in low temperature.

Description

Technical Field

[0001] This utility model relates to the field of beverage appliance technology, specifically to a cold grinder for coffee beans and a coffee machine containing the same. Background Technology

[0002] The coffee we drink daily is made from coffee beans using various brewing equipment. Coffee beans are the kernels inside the fruit of the coffee tree, roasted using appropriate methods. The oils and aromatic compounds in coffee are easily volatile at room temperature, especially between 80 and 95°C. During the grinding process, the grinder easily heats up, causing the already delicate oils and aromatic compounds to evaporate, severely impacting the quality of the coffee beverage.

[0003] Chinese utility model patent CN221714422U discloses an air-cooled coffee bean grinder, including a grinding chamber, a crushing chamber fixedly mounted on the top of the grinding chamber, a storage box fixedly mounted on the top of the crushing chamber, a blower fixedly mounted on one side of the storage box, and ventilation holes on the inner wall of one side of the storage box. This utility model, by setting up a first crushing roller, a second crushing roller, a first toothed disc, a second toothed disc, and a crushing motor, starts the crushing motor before grinding. The crushing motor drives a rotating shaft, which in turn drives the second toothed disc, which then drives the second crushing roller and the first toothed disc. The first toothed disc then drives the first crushing roller. The two crushing rollers rotate simultaneously to crush the falling coffee beans. The crushed coffee beans fall into a guide hopper and then into the grinding chamber through a guide tube at the bottom of the guide hopper. This allows for the crushing of coffee beans before grinding, reducing the volume of the coffee beans, shortening the grinding time, and improving processing efficiency.

[0004] The aforementioned existing technology can cool coffee beans with a blower before grinding, but it cannot solve the problem of the impact of heat generation during the grinding process on coffee beans. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems mentioned above, and provides a cold grinder for coffee beans and a coffee machine containing the same, which can consume part of the heat generated during the grinding process of coffee beans, thereby achieving the function of grinding coffee beans at low temperature.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A cold grinder for coffee beans includes a grinding chamber, a grinding assembly, a bean storage box, and a powder storage box. The grinding chamber has a grinding space, and the grinding assembly is installed within the grinding space. The grinding assembly includes a fixed grinding disc, a cold water circulation pipe, a cold water circulation connector, and a rotating grinding disc. The fixed grinding disc is located at the top of the grinding space and fixed to the inner wall of the grinding chamber. The cold water circulation pipe is enclosed within the fixed grinding disc, and the cold water circulation connector is installed on the grinding chamber and connected to the cold water circulation pipe. The rotating grinding disc is rotatably disposed within the grinding space and corresponds to the fixed grinding disc. The bean storage box is installed at the end of the grinding chamber where the fixed grinding disc is installed and communicates with the grinding space. The powder storage box is detachably installed at the end of the grinding chamber opposite to the bean storage box and communicates with the grinding space.

[0008] Furthermore, the fixed grinding disc includes a silicone grease layer and a grinding layer. The silicone grease layer covers the outside of the cold water circulation pipe, and the grinding layer covers the outside of the silicone grease layer and is fixed to the inner wall of the grinding chamber.

[0009] Furthermore, the fixed grinding disc is in the shape of an inverted funnel and has a bean inlet hole, which connects the grinding space and the bean storage box.

[0010] Furthermore, the rotating grinding disc includes an arc-shaped umbrella disc and an annular grinding disc. The arc-shaped umbrella disc is located on the side of the fixed grinding disc away from the bean storage box and corresponds to the fixed grinding disc. The annular grinding disc is connected to the periphery of the arc-shaped umbrella disc and extends towards the powder storage box. The distance from the outer surface of the annular grinding disc to the inner wall of the grinding box gradually decreases towards the powder storage box. The arc-shaped umbrella disc and the annular grinding disc are integrally formed, and both the surface of the arc-shaped umbrella disc and the annular grinding disc are provided with grinding blades.

[0011] Furthermore, the grinding assembly also includes a mounting base, a drive motor, a semiconductor cooler, a guide fan, a ventilation duct, a cooling fan, and a power supply. The mounting base is located within the grinding space and has a cooling space within it. The drive motor is mounted on the mounting base and connected to the rotating grinding disc. The semiconductor cooler is mounted on the bottom of the mounting base, and the guide fan is mounted on the side wall of the mounting base. The ventilation duct is located within the cooling space and connects the outside of the top surface of the mounting base and the outside of the bottom surface of the grinding chamber. The cooling fan is mounted on the powder storage box and corresponds to the heating surfaces of the ventilation duct and the semiconductor cooler. The power supply is mounted on the powder storage box and can be connected to the drive motor and the semiconductor cooler.

[0012] Furthermore, the grinding chamber has a built-in wall cold water circulation pipe on the wall corresponding to the rotating grinding disc, the wall cold water circulation pipe is connected to the cold water circulation connector, and silicone grease is filled between the grinding chamber and the wall cold water circulation pipe.

[0013] A coffee machine including a cold grinder for coffee beans includes a main body, a coffee making component and the aforementioned cold grinder for coffee beans. Both the coffee making component and the cold grinder for coffee beans are mounted on the main body. The coffee making component is used to make coffee beverages.

[0014] By adopting the above technical solution, this utility model has the following beneficial effects:

[0015] When using the above-mentioned cold coffee grinder, coffee beans are placed in the storage box. When grinding is required, the coffee beans fall into the grinding space and are located between the fixed grinding disc and the rotating grinding disc. The rotating grinding disc rotates to grind the beans. Cold water is connected through the cold water circulation connector and circulates in the cold water circulation pipe. The low temperature of the cold water cools down the fixed grinding disc, thereby consuming some of the heat generated during the grinding process, thus achieving the effect of grinding coffee beans at a low temperature. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a cold grinder for coffee beans.

[0017] Figure 2 for Figure 1 A sectional view.

[0018] Figure 3 This is a diagram of the bottom of a coffee grinder.

[0019] In the attached diagram, 1-grinding box, 11-grinding space, 12-powder outlet, 2-grinding assembly, 21-fixed grinding disc, 210-bean inlet, 211-silicone layer, 212-grinding layer, 22-cold water circulation pipe, 23-cold water circulation connector, 24-rotating grinding disc, 241-arc-shaped umbrella disc, 242-ring grinding disc, 243-grinding blade, 250-cooling space, 251-mounting base, 252-drive motor, 253-semiconductor cooling plate, 254-guide fan, 255-ventilation pipe, 256-cooling fan, 257-power supply, 3-bean storage box, 31-solenoid valve, 4-powder storage box. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] like Figures 1 to 3 As shown, a preferred embodiment of this utility model provides a cold coffee grinder, including a grinding chamber 1, a grinding assembly 2, a bean storage box 3, and a powder storage box 4. The grinding chamber 1 has a grinding space 11, and the grinding assembly 2 is installed within the grinding space 11. The grinding assembly 2 includes a fixed grinding disc 21, a cold water circulation pipe 22, a cold water circulation connector 23, and a rotating grinding disc 24. The fixed grinding disc 21 is located at the top of the grinding space 11 and fixed to the inner wall of the grinding chamber 1. The cold water circulation pipe 22 is made of 3mm copper and is enclosed within the fixed grinding disc 21. The cold water circulation connector 23 is installed on the grinding chamber 1 and connected to the cold water circulation pipe 22. Specifically, both the inlet and outlet ends of the cold water circulation pipe 22 are connected to the cold water circulation connector 23. The cold water circulation connector 23 is used to connect to a chiller to circulate 16°C cold water into the cold water circulation pipe 22. A rotating grinding disc 24 is rotatably positioned within the grinding space 11 and corresponds to a fixed grinding disc 21. A bean storage box 3 is installed at the end of the grinding box 1 where the fixed grinding disc 21 is located and communicates with the grinding space 11. Specifically, the bottom of the bean storage box 3 has an opening communicating with the grinding space 11, and a solenoid valve 31 is installed at the opening to close or open it. A powder storage box 4 is detachably installed at the end of the grinding box 1 opposite to the bean storage box 3 and communicates with the grinding space 11. Specifically, the bottom of the grinding box 1 has a powder outlet 12 communicating with the grinding space 11 and the powder storage box 4. The diameter of the powder outlet 12 is smaller than the diameter of a single coffee bean to allow powdered coffee to fall into the powder storage box 4.

[0024] When using the above-mentioned cold coffee grinder, coffee beans are placed in the bean storage box 3. When it is time to grind coffee beans, the solenoid valve 31 is opened, and the coffee beans fall into the grinding space 11 and are located between the fixed grinding disc 21 and the rotating grinding disc 24. The rotating grinding disc 24 rotates to grind the beans. Cold water is connected from the cold water circulation connector 23 and circulates in the cold water circulation pipe 22. The low temperature of the cold water cools down the fixed grinding disc 21, thereby consuming some of the heat generated during the coffee bean grinding process, thus achieving the effect of grinding coffee beans at a low temperature.

[0025] In this embodiment, the fixed grinding disc 21 is in the shape of an inverted funnel, and a bean inlet hole 210 is provided at the center of the fixed grinding disc 21. The bean inlet hole 210 connects the grinding space 11 and the bean storage box 3. Specifically, the bean inlet hole 210 corresponds to the opening of the bean storage box 3. The fixed grinding disc 21 includes a silicone grease layer 211 and a grinding layer 212. The silicone grease layer 211 covers the outside of the cold water circulation pipe 22, and the grinding layer 212 covers the outside of the silicone grease layer 211 and is fixed to the inner wall of the grinding box 1. The grinding layer 212 is made of food-grade stainless steel. The silicone grease has good thermal conductivity, which can conduct the low temperature of the cold water circulation pipe 22 to the grinding layer 212, thereby consuming some of the heat generated during the coffee bean grinding process.

[0026] In this embodiment, the rotating grinding disc 24 includes an arc-shaped umbrella disc 241 and an annular grinding disc 242. The arc-shaped umbrella disc 241 is located on the side of the fixed grinding disc 21 away from the bean storage box 3 and corresponds to the fixed grinding disc 21; the annular grinding disc 242 is connected to the periphery of the arc-shaped umbrella disc 241 and extends towards the powder storage box 4. The distance from the outer surface of the annular grinding disc 242 to the inner wall of the grinding box 1 gradually decreases towards the powder storage box 4, and the position with the smallest distance is the same as the diameter of the powder outlet 12. The arc-shaped umbrella disc 241 and the annular grinding disc 242 are integrally formed, and both the surface of the arc-shaped umbrella disc 241 and the annular grinding disc 242 are provided with grinding blades 243. When coffee beans fall into the grinding space 11 and are located between the fixed grinding disc 21 and the rotating grinding disc 24, the coffee beans will not fall out of the powder outlet 12 due to their large size. As the rotating grinding disc 24 rotates, the grinding blades 243 grind the coffee beans. As the coffee beans are ground into fine powder, the fine coffee powder falls from the gap between the annular grinding disc 242 and the grinding box 1 into the powder outlet 12 and then falls into the powder storage box 4.

[0027] In this embodiment, the grinding assembly 2 further includes a mounting base 251, a drive motor 252, a semiconductor cooler 253, a guide fan 254, a ventilation duct 255, a cooling fan 256, and a power supply unit 257. The mounting base 251 is located within the grinding space 11 and fixed to the bottom of the grinding chamber 1. A cooling space 250 is provided within the mounting base 251. The drive motor 252 is mounted on the top of the mounting base 251 and connected to the rotating grinding disc 24, and is used to drive the rotating grinding disc 24 to rotate. The semiconductor cooler 253 is mounted on the bottom of the mounting base 251, and the guide fan 254 is mounted on the side wall of the mounting base 251. The ventilation duct 255 is located within the cooling space 250 and connects the exterior of the top surface of the mounting base 251 and the exterior of the bottom surface of the grinding chamber 1. A cooling fan 256 is mounted on the powder storage box 4 and corresponds to the heat dissipation surface of the ventilation duct 255 and the semiconductor cooler 253. A power supply unit 257 is mounted on the powder storage box 4 and can be connected to the drive motor 252 and the semiconductor cooler 253. Specifically, the powder storage box 4 has a mounting flange at the position corresponding to the mounting base 251, and the power supply unit 257 is mounted on the mounting flange. The power supply unit 257 is a detachable solid-state battery. An exhaust channel is provided through the mounting flange, and the cooling fan 256 is mounted on the top of the mounting flange corresponding to the exhaust channel. The inner diameter of the powder storage box 4 is adapted to the outer diameter of the grinding chamber 1 so that the powder storage box 4 can be detachably fitted onto the bottom of the grinding chamber 1 by friction. When the powder storage box 4 is fitted onto the bottom of the grinder 1, the power supply unit 257 is electrically connected to the drive motor 252 and the semiconductor cooler 253, and the drive motor 252, the semiconductor cooler 253, and the cooling fan 256 are all operating. At this time, the semiconductor cooler 253 cools the air in the cooling space 250, and the fan 254 blows the low-temperature air into the grinding space 11 to lower the temperature inside the grinding space 11, further consuming some of the heat generated during the coffee bean grinding process. In the aforementioned process, under the operation of the cooling fan 256, the semiconductor cooler 253 dissipates heat, and the air in the grinding space 11 is discharged through the ventilation duct 255.

[0028] In this embodiment, a wall-mounted cold water circulation pipe 22 is built into the wall of the grinding chamber 1 corresponding to the rotating grinding disc 24. The wall-mounted cold water circulation pipe 22 is connected to a cold water circulation connector 23, and silicone grease is filled between the grinding chamber 1 body and the wall-mounted cold water circulation pipe 22. The aforementioned arrangement can reduce the temperature of the inner wall of the grinding chamber 1 corresponding to the annular grinding disc 242, thereby reducing the temperature at the corresponding location.

[0029] This embodiment also provides a coffee machine including a cold grinder for coffee beans, comprising a main body, a coffee making component, and the aforementioned cold grinder for coffee beans. Both the coffee making component and the cold grinder for coffee beans are mounted on the main body. The coffee making component is used to make coffee beverages. The coffee making component includes components other than those used for grinding coffee beans in existing coffee machines. This is a commonly used prior art in the field. For example, the components other than the grinding mechanism disclosed in the grinding and brewing mechanism for a coffee machine disclosed in Chinese invention patent application CN114903342A. Since the cold grinder for coffee beans in this utility model can independently complete the grinding operation of coffee beans, it can be integrated into existing coffee machines.

[0030] It is understood that the power supply component 257 is not limited to a removable solid-state battery as in this embodiment. In other embodiments, it can be a power supply part connected by a power line, or the power supply component 257 can be a common component in the art that can supply power.

[0031] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A cold grinder for coffee beans, characterized in that: The equipment includes a grinding box (1), a grinding assembly (2), a bean storage box (3), and a powder storage box (4). The grinding box (1) has a grinding space (11). The grinding assembly (2) is installed in the grinding space (11). The grinding assembly (2) includes a fixed grinding disc (21), a cold water circulation pipe (22), a cold water circulation connector (23), and a rotating grinding disc (24). The fixed grinding disc (21) is located at the top of the grinding space (11) and fixed to the inner wall of the grinding box (1). The cold water circulation pipe (22) covers the fixed grinding disc (21). Inside, the cold water circulation connector (23) is installed on the grinding box (1) and connected to the cold water circulation pipe (22); the rotating grinding disc (24) is rotatably disposed in the grinding space (11) and corresponds to the fixed grinding disc (21); the bean storage box (3) is installed at one end of the grinding box (1) where the fixed grinding disc (21) is installed and is connected to the grinding space (11); the powder storage box (4) is detachably installed at one end of the grinding box (1) away from the bean storage box (3) and the powder storage box (4) is connected to the grinding space (11).

2. The coffee bean cold grinder as described in claim 1, characterized in that: The fixed grinding disc (21) includes a silicone grease layer (211) and a grinding layer (212). The silicone grease layer (211) covers the outside of the cold water circulation pipe (22), and the grinding layer (212) covers the outside of the silicone grease layer (211) and is fixed to the inner wall of the grinding box (1).

3. The coffee bean cold grinder as described in claim 1, characterized in that: The fixed grinding disc (21) is in the shape of an inverted funnel and has a bean inlet hole (210). The bean inlet hole (210) connects the grinding space (11) and the bean storage box (3).

4. A cold grinder for coffee beans as described in claim 3, characterized in that: The rotating grinding disc (24) includes an arc-shaped umbrella disc (241) and an annular grinding disc (242). The arc-shaped umbrella disc (241) is located on the side of the fixed grinding disc (21) away from the bean storage box (3) and corresponds to the fixed grinding disc (21). The annular grinding disc (242) is connected to the periphery of the arc-shaped umbrella disc (241). The annular grinding disc (242) extends toward the powder storage box (4), and the distance from the outer surface of the annular grinding disc (242) to the inner wall of the grinding box (1) gradually decreases toward the powder storage box (4). The arc-shaped umbrella disc (241) and the annular grinding disc (242) are integrally formed, and both the surface of the arc-shaped umbrella disc (241) and the annular grinding disc (242) are provided with grinding blades (243).

5. A cold grinder for coffee beans as described in claim 1, characterized in that: The grinding assembly (2) further includes a mounting base (251), a drive motor (252), a semiconductor cooler (253), a guide fan (254), a ventilation duct (255), a cooling fan (256), and a power supply (257). The mounting base (251) is located within the grinding space (11), and a cooling space (250) is provided within the mounting base (251). The drive motor (252) is mounted on the mounting base (251) and connected to the rotating grinding disc (24). The semiconductor cooler (253) is mounted at the bottom of the mounting base (251). The guide fan... (254) is installed on the side wall of the mounting base (251); the ventilation pipe (255) is located in the cooling space (250), and the ventilation pipe (255) connects the outside of the top surface of the mounting base (251) and the outside of the bottom surface of the grinding box (1); the cooling fan (256) is installed on the powder storage box (4) and can correspond to the heating surface of the ventilation pipe (255) and the semiconductor cooling plate (253); the power supply (257) is installed on the powder storage box (4) and can be connected to the drive motor (252) and the semiconductor cooling plate (253).

6. A cold grinder for coffee beans as described in claim 1, characterized in that: The grinding box (1) has a wall cold water circulation pipe (22) built into the wall corresponding to the rotating grinding disc (24). The wall cold water circulation pipe (22) is connected to the cold water circulation connector (23). Silicone grease is filled between the grinding box (1) and the wall cold water circulation pipe (22).

7. A coffee machine comprising a cold grinder for coffee beans, characterized in that: The invention includes a main body, a coffee-making component, and a cold grinder for coffee beans as described in any one of claims 1 to 6. Both the coffee-making component and the cold grinder for coffee beans are mounted on the main body, and the coffee-making component is used to make coffee beverages.

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