CN220069478U - Pressurized soaking type coffee brewing device - Google Patents

Abstract

The utility model discloses a pressurized soaking type coffee brewing device, which belongs to the technical field of coffee brewing and comprises a cup main body, a powder box, a single-flow valve and a pushing structure, wherein a fluid channel penetrating through the body is arranged at the bottom of the cup main body; the two ends of the powder box are respectively provided with a first filtering device and a second filtering device with lower permeability than the first filtering device; the pushing structure is used for pushing the powder box to axially slide along the cup main body, and the first filter is positioned between the second filter and the bottom of the cup main body in the sliding process, and the outer peripheral side wall of the powder box is in sealing connection with the inner peripheral side wall of the cup main body. The utility model improves the pressure of coffee powder in contact with water in the brewing process by arranging the second filtering equipment with low permeability, is favorable for pressurizing and infiltrating to improve the concentration of coffee, and simultaneously breaks the negative pressure at the bottom of the cup main body and reduces the difficulty of taking out the powder box by arranging the fluid channel provided with the check valve in the cup main body.

Description

Pressurized soaking type coffee brewing device

Technical Field

The utility model relates to the technical field of coffee brewing, in particular to a pressurized soaking type coffee brewing device.

Background

Coffee is a common beverage, and the flavor of the coffee is different according to the type of coffee beans, the extraction device and the brewing mode. The current common coffee brewing mode is a method pressure type, the coffee brewing device comprises an outer cup, a method pressure rod and a powder box with filter plates at two ends, when the coffee brewing device is used, water is filled into the outer cup, coffee powder is filled into the powder box, then the powder box is filled into the outer cup, at the moment, the peripheral side wall of the powder box is in sealed connection with the inner wall of the outer cup, the method pressure rod pushes the powder box to move in the outer cup, so that coffee powder is soaked in water, the soaking time and the pressure have important influences on taste, the soaking time must be strictly controlled, the powder box is removed after the soaking time is usually 4-8 minutes, in addition, in order to obtain espresso coffee, the solution must be pressurized during filter pressing, namely pressurized soaking, and the higher the soaking pressure is higher the coffee concentration. In this regard, the conventional treatment mode at present is to seal the outer cup and then supply pressure outside, such as inflation pressure supply, and simultaneously control the powder box in the outer cup to move for press filtration, so that the structure is complex and the operation is complex.

Disclosure of Invention

In view of the above problems, it is an object of the present utility model to provide a pressurized infusion coffee brewing apparatus that provides a new pressurization scheme that configures the permeability of the filter element on the side of the cartridge near the cup opening to be lower than the other filter element, so that the low permeability filter element is used as a shut-off element, and the contact pressure of water with the coffee powder in the cartridge is controlled by controlling the force of pressing down the cartridge.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

a pressurized soaking type coffee brewing device comprises a cup main body, a powder box, a single-flow valve and a pushing structure; the cup body is of a barrel-shaped structure, a fluid channel is arranged on the cup body, one end of the fluid channel is communicated with the inner side of the bottom of the cup body, and the other end of the fluid channel is communicated with the environment outside the cup body; the single-flow valve is positioned in the fluid channel and used for preventing the fluid in the cup body from leaking out to the outside environment along the fluid channel; the powder box is used for storing coffee powder, two ends of the powder box are provided with filtering equipment, namely first filtering equipment and second filtering equipment, and the permeability of the second filtering equipment is lower than that of the first filtering equipment; the pushing structure is used for pushing the powder box to axially slide along the cup main body, and the first filter is positioned between the second filter and the closed end of the cup main body in the sliding process, and the outer peripheral side wall of the powder box is in sealing connection with the inner peripheral side wall of the cup main body.

As a specific embodiment of the present utility model, the second filter device is a filter paper, and the first filter device may be a filter plate.

As a specific embodiment of the utility model, the second filter means is a dense metal filter plate, the first filter means is also a filter plate, but the porosity of the second filter means is large.

As a specific implementation mode of the utility model, the pushing structure is detachably connected with the powder box, the specific connection mode can be threaded connection, snap connection, tight fit and fixation of soft rubber, and a sealing ring and the like can be arranged according to the requirement of the utility model, so as to enhance sealing.

The pushing structure can be a pressure rod, fluid at the upper part and the lower part of the powder box are contacted with the inner wall of the cup main body, but coffee ingredients are easy to precipitate on the inner wall to influence the sealing between the powder box and the inner wall at the later stage, so the utility model provides a structure that the inner wall of the cup main body is contacted with water only and is not contacted with the coffee ingredients.

As a specific embodiment of the present utility model, the powder box comprises a box body made of elastic material, wherein the box body is of a cylindrical structure, and one end of the box body is connected with the pushing structure.

As a specific embodiment of the utility model, the single flow valve is a silica gel sheet, the silica gel sheet is fixed on the inner side of the bottom of the cup main body, and a part of the silica gel sheet is in a free state and can cover the outlet of the fluid channel.

As a specific embodiment of the present utility model, the single flow valve is an airtight core.

As a specific embodiment of the utility model, the device further comprises an inflating device, and a gas outlet of the inflating device is communicated with the inner side of the bottom of the cup body.

Compared with the prior art, the technical scheme of the utility model has the following technical effects:

the coffee brewing device filters coffee by adopting the second filtering equipment with lower permeability than the first filtering equipment, so that the pressure of coffee powder in contact with water in the brewing process is increased, and high-concentration coffee can be obtained by a pressurizing and soaking mode. Meanwhile, the fluid channel is arranged in the cup main body and is used for supplying air to the bottom of the cup main body to break negative pressure, so that the problem that a powder box is difficult to take and place from the same opening end after the second filtering equipment with low permeability is adopted is solved.

Drawings

FIG. 1 is an overall cross-sectional view of a pressurized infusion coffee brewing apparatus in accordance with one embodiment of the present utility model;

FIG. 2 is an enlarged view of part of the portion A of FIG. 1;

FIG. 3 is a cross-sectional view of a single flow valve in one embodiment of the utility model;

FIG. 4 is a cross-sectional view of an integrally formed structure of a compact and a pushing structure in one embodiment of the utility model;

FIG. 5 is a cross-sectional view of a compact in a pouch-like shape and in a hitched condition on the outer wall of a pushing structure according to one embodiment of the present utility model;

FIG. 6 is a cross-sectional view of an inflator in direct communication with a fluid passage of a cup body in accordance with one embodiment of the utility model;

in the figure, a cup body 100; a powder box 200; a check valve 300; pushing structure 400; a cup cover 500; an inflator 600;

a fluid channel 101; a first filtering device 201; a second filter device 202; a cartridge main body 203; a silicone sheet 301; a valve body 302; locking gland 303; annular seal 304.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In an embodiment, a sealed connection means that the joint surfaces of the two connectors are tightly closed to prevent the passage of fluids (e.g. water, coffee).

In the embodiment, the check valve is a structure which only allows fluid to flow unidirectionally, i.e. from a first direction to a second direction, but not back-flow, i.e. from the second direction to the first direction.

The pressurized infusion coffee brewing apparatus of the present utility model includes a cup body 100, a cartridge 200, a single flow valve 300, and a push structure 400. The cup body 100 is a tub-like structure having an opening at the top, referred to as an open end, and a closed bottom, referred to as a closed end, through which water, the powder cartridge 200, etc., enter and exit the cup body 100. The cup main body 100 is provided with a fluid channel 101, one end of the fluid channel 101 is communicated with the inner side of the bottom of the cup main body 100, and the other end of the fluid channel is communicated with the environment outside the cup main body 100; the single flow valve 300 is located in the fluid channel 101 for preventing the fluid in the cup body 100 from leaking out to the outside environment along the fluid channel 101; the powder box 200 is used for storing coffee powder, two ends of the powder box 200 are provided with filter devices, namely a first filter device 201 and a second filter device 202, and the permeability of the second filter device 202 is lower than that of the first filter device 201; the pushing structure 400 is used for pushing the powder box 200 to slide along the axial direction of the cup body 100, and the first filter 201 is located between the second filter 202 and the closed end of the cup body 100 during the sliding process, and the outer peripheral sidewall of the powder box 200 is in sealing connection with the inner peripheral sidewall of the cup body 100.

When the device is used, water is filled in the cup main body 100 (the water can select hot water or cold water according to the type of coffee to be prepared), then the powder box 200 filled with coffee powder is put into the cup main body 100 from the opening end, the first filtering device 201 is positioned at the lower side of the second filtering device 202 when the powder box 200 is put into the cup main body, after the powder box is put into the cup main body, the outer peripheral side wall of the powder box 100 is in sealing connection with the inner peripheral side wall of the cup main body 100, the powder box 200 is pushed to the bottom of the cup main body 100 by utilizing the pushing structure 400, in the process, the water sequentially flows through the first filtering device 201 and the second filtering device 202 and dissolves the coffee powder in the powder box 200, and as the permeability of the second filtering device 202 is lower than that of the first filtering device 201, the second filtering device 202 has a throttling effect when the water passes through the powder box 200, the contact pressure of the water and the coffee powder can be improved, and the espresso coffee can be obtained, after the powder box 200 reaches the bottom of the cup main body 100, the brewed coffee can be poured out or stored, and the coffee can be poured out from the cup main body 100, and the coffee can be taken out from the opening end to the outside, and the negative pressure of the cup main body 200 can be easily damaged, and the negative pressure can be easily removed from the outside the cup main body 100, and the negative pressure can be easily removed from the side by the filter device is easily and the vacuum valve 300.

FIG. 1 shows an embodiment of the utility model, wherein the fluid channel 101 is a through hole extending axially along the cup body 100 and penetrating the body; the check valve 300 is a silica gel plug, the silica gel plug comprises a sheet-shaped silica gel sheet 301, the silica gel sheet 301 is positioned at the inner side of the bottom of the cup main body 100, a part of the silica gel sheet 301 is in a free state and can cover the fluid channel 101, the silica gel sheet acts according to the pressure at two sides of the silica gel sheet, when the pressure near one side of the inner part of the cup main body 100 is smaller than the pressure at the other side, the silica gel sheet 301 deforms towards the inner side of the cup main body 100 to open the fluid channel 101, and air enters the cup main body 100; when the pressure near one side of the interior of the cup body 100 is greater than or equal to the pressure near the other side, the silicone sheet 301 is tightly adhered to the inner wall of the closed end, closing the fluid passage 101. There are many ways to fix the silicone sheet 301 to the closed end, such as by pins in some embodiments, screws in some embodiments, and snap-fit in some embodiments, as shown in fig. 2.

Of course, there are many specific forms of the single flow valve 300, and an airtight core commonly used for tires can be adopted, as shown in fig. 3, the single flow valve includes a rod-shaped valve body 302, a locking gland 303 and an elastic annular sealing ring 304, a second fluid channel is built in the valve body 302, one end of the second fluid channel is located on a peripheral side wall of the valve body 302, the annular sealing ring 304 is sleeved on an outer wall of the valve body 302 and covers the end of the second fluid channel located on the peripheral side wall of the valve body 302, the locking gland 303 is used for fixing the valve body 302 in the fluid channel 101, and an annular gap between the outer wall of the valve body 302 and the fluid channel 101 is sealed after the locking gland is fixed.

In the present utility model, the brewed coffee can be stored through the additional coffee cup, and the sample brewing device only bears the brewing task and does not need to be equipped with the cup cover, of course, in order to ensure sanitation, the cup cover 500 can be provided to avoid substances irrelevant to the coffee brewing process from entering the cup main body 100, the cup cover 500 and the open end can be detachably connected, such as threaded connection and snap connection, the brewing operation can be performed by detaching the cup cover 500, and the cup cover 500 is covered to isolate the brewed coffee from the external environment after the brewing is completed.

In the present utility model, the permeability of the second filter device 202 is lower than that of the first filter device 201, in some embodiments, the second filter device 202 uses filter paper, and screen plates are disposed on two sides of the filter paper for supporting the filter paper, and the first filter device 201 uses a filter plate, and the permeability of the filter plate is adjusted by adjusting the density and the size of the screen holes on the filter plate. In other embodiments, the second filter apparatus 202 and the first filter apparatus 201 are both filter plates, for example, the second filter apparatus 202 is a 400 mesh screen plate and the first filter apparatus 201 is a 200 mesh screen plate.

In the present utility model, the pushing structure 400 is used to drive the powder box 200 to move in the cup main body 100, and the pushing structure 400 and the powder box 200 may be detachably connected, such as threaded connection and snap connection, or may be integrally formed, as shown in fig. 4. In some embodiments, the powder box 200 includes a first filtering device 201, a second filtering device 202 and a barrel-shaped box main body 203, where the box main body 203 is made of elastic materials, such as soft glue and elastic glue, one end of the box main body 203 is sleeved and fixed on the peripheral side wall of the pushing structure 400, and the peripheral side wall of the box main body 203 has deformability, so that when the box main body is placed into the cup main body 100, an annular gap between the peripheral side wall of the powder box 200 and the inner wall of the cup main body 100 can be sealed, the first filter 201 and the box main body 203 can be fixedly connected, and of course, the box main body 203 and the first filtering device 201 can be integrally formed to form a bag-shaped structure, and at this time, the first filtering device 201 can be formed by directly forming a hole in the bottom of the bag, and of course, in order to avoid that the deformation of the first filtering device 201 affects the flow area, a rigid annular piece can be fixed in the hole in the bottom of the bag, and the hollow part is a flow channel; similarly, the second filter device 202 may be fixedly connected to the main body 203, and may be integrally formed with the pushing structure 400. After the cartridge main body 203 made of such elastic material is used, when the first filtering device 201 abuts against the closed end of the cup main body 200, the pushing structure 400 is pushed continuously, so that objects in the powder cartridge 100 can be squeezed, which is beneficial to compacting coffee grounds, forcing liquid therein to pass through the second passing device 202 for recovery, and reducing the water content of the coffee grounds.

In the present utility model, the pushing structure 400 may be a compression bar or a cylindrical inner cup, and when the inner cup is adopted, the coffee solution in which the coffee powder is dissolved does not enter the sliding sealing surface between the powder box 200 and the inner wall of the cup main body 100, so that the influence of the tiny particles in the sliding sealing surface on the sealing surface is avoided.

In addition, in some embodiments, an inflator 600 is provided on the outside of the cup body 100 to inflate the inside of the bottom of the cup body 100. After the brewing operation is completed, the coffee liquid in the cup body 100 is poured out, but because the permeability of the second filtering device 202 is lower, more coffee liquid remains in the powder box 200 at this time, in order to recover the liquid as much and as quickly as possible, the cup body 100 is inverted, then the air is introduced into the cup body 100 through the air charging device 600, the pressure in the powder box 200 is increased, and the fluid in the powder box 200 is pushed to quickly pass through the second filtering device 202, so that the liquid is recovered. Of course, the gas outlet of the inflator 600 may be directly connected to the fluid passage 101, and the gas may be supplied to the bottom of the cup main body 100 through the same flow path, as shown in fig. 6.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A pressurized infusion coffee brewing apparatus comprising:

the cup comprises a cup body with a barrel-shaped structure, wherein a fluid channel is arranged on the cup body, one end of the fluid channel is communicated with the inner side of the bottom of the cup body, and the other end of the fluid channel is communicated with the environment outside the cup body;

a one-way valve in the fluid passage for preventing fluid in the cup body from leaking out along the fluid passage to the outside environment;

the coffee powder storage device comprises a powder box for storing coffee powder, wherein filtering devices, namely a first filtering device and a second filtering device, are arranged at two ends of the powder box, and the permeability of the second filtering device is lower than that of the first filtering device;

the pushing structure is used for pushing the powder box to axially slide along the cup main body, the first filter is positioned between the second filter and the closed end of the cup main body in the sliding process, and the outer peripheral side wall of the powder box is in sealing connection with the inner peripheral side wall of the cup main body.

2. A pressurized-infusion coffee brewing apparatus according to claim 1, wherein said second filter device is a filter paper.

3. A pressurized infusion coffee brewing apparatus according to claim 1, wherein said second filter means is a filter plate.

4. A pressurized infusion coffee brewing apparatus according to claim 1, wherein said pushing structure is detachably connected to said cartridge.

5. A pressurized-infusion coffee brewing apparatus according to claim 1, wherein said pushing structure is a cylindrical inner cup, one end of which communicates with the end of said cartridge provided with the second filtering means.

6. A pressurized-infusion coffee brewing apparatus according to claim 5, wherein said powder cartridge comprises a cartridge body made of elastic material, said cartridge body having a cylindrical structure and one end thereof being sleeved on the outer wall of one end of said inner cup.

7. A pressurized infusion coffee brewing apparatus according to claim 6, wherein the portion of the cartridge body that is sleeved on the outer wall of the inner cup seals an annular space between the inner cup and the inner wall of the cup body.

8. A pressurized infusion coffee brewing apparatus according to claim 1, wherein said single flow valve is an airtight cartridge.

9. A pressurized-infusion coffee brewing apparatus according to claim 1, wherein said single-flow valve is a silicone sheet fixed inside the bottom of the cup body, and a portion of the silicone sheet is free and able to cover said fluid passage outlet.

10. A pressurized infusion coffee brewing apparatus according to claim 1, further comprising an inflator, the gas outlet of which communicates with the inside of the bottom of the cup body.