WO2012006822A1 - Beverage brewing mechanism and beverage making device with beverage brewing mechanism - Google Patents

Abstract

A beverage brewing mechanism includes a brewing chamber, a pressure relief valve (90) connected with the brewing chamber, and a driving mechanism (40) for driving the brewing chamber and the pressure relief valve (90) to open or close. The brewing mechanism also includes an injection mechanism for injecting hot water into the brewing chamber. The pressure relief valve (90) includes a valve body (91), a pressure relief interface (92) and a brewing chamber interface (93) which are arranged on the valve body (91), a valve rod (94) arranged in the valve body (91) for connecting or disconnecting the pressure relief interface (92) and the brewing chamber interface (93). The pressure relief valve (90) is only used for pressure relief, and high pressure hot water is injected into the brewing chamber by the injection mechanism independent of the pressure relief valve (90). Therefore, to some extent, negative effects of the current pressure release valve due to "one valve for two purposes" can be avoided and reliability and safety of the pressure release valve can be increased. Moreover, a beverage making device with the beverage brewing mechanism is provided.

Description

Beverage brewing mechanism and beverage making device having the brewing mechanism

 Technical field

 The present invention relates to a beverage brewing mechanism and a beverage producing device having the brewing mechanism.

 Background technique

Espresso refers to a coffee beverage obtained by passing high pressure hot water through the pressed coffee powder, which is popular for its special aroma and mouthfeel. The equipment used to brew Italian coffee generally has a sealing mechanism (also known as a brewing mechanism) capable of withstanding a certain pressure and temperature, even if it is convenient and quick to prepare a coffee (capsule) or coffee bag (coffee). The pod) coffee machine is no exception. The brewing mechanism is in a high pressure state during the brewing process, and the pressure in the brewing chamber at the end of the brewing is difficult to reduce the atmospheric pressure in a very short time. In this case, if the user is eager to open the brewing chamber, the frying phenomenon is likely to occur, that is, the hot water splashes out and burns the user.

In order to solve the above problems, the Chinese utility model patent specification CN201005520Y (authorization announcement date January 16, 2008) discloses an improved coffee machine pressure brewing mechanism. The brewing device comprises a first component and a second component constituting a brewing chamber, and a driving mechanism for driving the first component to move to open and close the brewing chamber; characterized in that: a pressure relief valve is provided, and the pressure relief valve is provided with a connecting brewing chamber a first interface, a second interface connecting the coffee machine boiler, a pressure relief interface, and a valve stem that is connected to the first interface and the pressure relief interface in an initial state; the first component is correspondingly provided with a top block, and the top block is The valve stem is pushed during the closing of the brewing chamber, so that the first interface is connected to the second interface and is cut off from the pressure relief interface. That is, the brewing mechanism can control the brewing chamber and the opening and closing of the pressure relief valve simultaneously by the driving mechanism to realize simple and rapid pressure relief.

However, this brewing mechanism has the following disadvantages: when the brewing chamber is closed, the first port of the pressure relief valve connected to the brewing chamber and the second port connected to the coffee machine boiler are connected, and the high pressure hot water in the boiler will pass through the pressure relief valve. Enter into the brewing chamber. However, the frequent use of high pressure hot water through the pressure relief valve can have a negative impact on its service life and safety reliability. Especially for pressure relief valves as safety protection mechanisms, it is very important to ensure their reliability.

 Therefore, it is a technical problem to be solved to provide a brewing mechanism that can have a long service life and is safer and more reliable.

 Summary of the invention

 The first technical problem solved by the present invention is to provide a more safe and reliable beverage brewing mechanism.

 A second technical problem solved by the present invention is to provide a more safe and reliable beverage making device.

 To solve the first technical problem, the first technical solution adopted by the present invention is:

A beverage brewing mechanism includes a brewing chamber, a pressure relief valve connected to the brewing chamber, and a driving mechanism for driving the brewing chamber and the pressure releasing valve to open or close, and further: the brewing mechanism further comprises a brewing chamber An injection mechanism for injecting hot water; the pressure relief valve includes: a valve body, a pressure relief interface disposed on the valve body, and a brewing chamber interface, disposed in the valve body for opening or closing the pressure relief interface and the brewing chamber Valve stem for the interface.

As one of the improvements: the brewing mechanism further comprises a detachable beverage box for placing the product to be extracted, and a brewing lid forming the brewing chamber with the beverage box and movable relative to the beverage box to open or close the brewing chamber, The brewing cover is connected to the driving mechanism, and the beverage box and the brewing cover are provided with a first guiding mechanism positioned in cooperation with each other; the injecting mechanism is the brewing cover.

 As a second improvement: the first guiding mechanism comprises a positioning groove and a positioning protrusion respectively disposed on the beverage box and the brewing cover, and/or two magnets.

As a third improvement: the brewing mechanism further comprises a brewing cover bracket, wherein the brewing lid holder is provided with a cavity for accommodating the brewing lid therein for lifting movement; further, the beverage box is provided with a space for receiving A beverage trough of the product, the beverage trough and the brewing lid forming the brewing chamber, and the beverage trough is provided with a beverage outlet.

As a fourth improvement: the brewing cover is provided with a transverse groove; the pressure relief valve is provided with a resetting member for driving the valve stem to return to the pressure releasing position; the driving mechanism comprises: hinged with the brewing cover bracket a handle, a slider embedded in the transverse groove and hinged with the handle, and a driving portion for driving the valve stem to move to a working position, and the handle is in a first extreme position of the movable stroke The chamber is opened and the brewing chamber is closed when the handle is in the second extreme position.

As a fifth improvement: the handle has a dead center position between the first extreme position and the second extreme position. The so-called dead center position, that is, the direction in which the thrust applied by the brewing cover to the slider is perpendicular to the position of the handle (or drive mechanism) when the slider moves in that position.

 As a sixth improvement: the beverage outlet of the beverage box is a small hole, and the beverage box is further provided with a baffle opposite to the beverage outlet.

As a seventh improvement: the brewing mechanism further includes a beverage cartridge holder for inserting the beverage cartridge; the brewing lid further comprising a release elastic sheet protruding from the surface of the brewing lid.

As a modification 8 , the beverage box holder and the beverage box are provided with a second guiding mechanism that is cooperatively positioned, and the second guiding mechanism comprises a positioning groove and a positioning respectively disposed on the beverage box holder and the beverage box. Bumps, and / or two magnets.

As a modification ninth: the brewing cover comprises: a cover body, an upper cover disposed above the cover body, a seal ring disposed under the cover body, and a lower cover disposed in the seal ring and having a water injection hole thereon The transverse groove is disposed on the upper cover; the edge of the sealing ring in the closed state is in sealing engagement with the edge of the beverage tank of the beverage box.

 To solve the first technical problem, the second technical solution adopted by the present invention is:

A beverage making device using a beverage cake or capsule, comprising a fixing frame and a brewing mechanism, a hot water system and a control system respectively disposed on the fixing frame, wherein the brewing mechanism is the first technical solution or a modification thereof The beverage brewing institution described.

Compared with the prior art, the first technical solution of the present invention has the beneficial effects that the pressure relief valve of the present invention is only used for pressure relief, and also injects high-pressure hot water into the brewing chamber through an injection mechanism independent of the pressure relief valve, The negative impact of the existing pressure relief valve due to 'one valve dual use' can be avoided to some extent, and the reliability and safety of the pressure relief valve can be improved.

Compared with the prior art, the second technical solution of the present invention has the beneficial effects that the brewing mechanism of the first technical solution or the improved solution is safer and more reliable than the existing powder cake or capsule type beverage manufacturing device. Fryer accidents are prone to occur.

 DRAWINGS

 1 is an exploded perspective view of a specific embodiment of the first technical solution;

 Figure 2 is a cutaway view of a specific embodiment of the first technical solution;

 Figure 3 is a cutaway view of a pressure relief valve of a specific embodiment of the first technical solution;

 Figure 4 is an enlarged schematic view of a portion of Figure 2;

 Fig. 5 is a perspective view of the brewing lid lower cover and the anti-adhesive elastic sheet of the specific embodiment of the first technical solution.

 detailed description

 The first technical solution of the present invention will be further described below with reference to the accompanying drawings.

As shown in FIG. 1, the beverage brewing mechanism of the present invention comprises: a brewing chamber, a pressure relief valve 90 connected to the brewing chamber, a driving mechanism 40 for driving the brewing chamber and the pressure releasing valve 90 to be opened or closed, and The brewing chamber injects hot water into the injection mechanism (not shown).

 As shown in FIG. 1, the brewing mechanism further includes a beverage box 30, a beverage box holder 50, a brewing lid 10, and a brewing lid holder 20.

The beverage box 30 is provided with a beverage tank 31 for placing a product to be extracted, and a beverage outlet 32 is provided in the beverage tank 31. Further, the beverage box 30 is detachably inserted into the beverage box holder 50. Since the beverage box 30 is detachable, when the brewing lid 10 moves away from the beverage tank 31 to open the brewing chamber, the user can take out the beverage box 30 to perform the operation of picking up the product to be extracted. Wherein, the product to be extracted may be a beverage capsule (coffee Capsule), coffee pad or beverage package (coffee) Pod) is a product that can be easily and quickly extracted from beverages. For example, coffee cakes, tea bags, concentrated beverage liquids, and the like. In the present embodiment, the product to be extracted is a coffee cake 60.

The brewing lid 10 is the above-described infusion mechanism that forms a brewing chamber with the beverage tank 31 of the beverage box 30, and the brewing lid 10 is movable relative to the beverage box 30 to open or close the brewing chamber. The brewing cover 10 includes a lid body 11, an upper lid 12 disposed above the lid body, a seal ring 13 disposed under the lid body, and a lower lid 14 disposed in the seal ring and having a water injection hole thereon. A lateral groove 19 is provided on the upper cover. The cover bracket 20 is provided with a cavity for accommodating the brewing cover 10 for lifting movement therein. In addition, a water injection port (not shown) connected to the injection mechanism is further provided on the brewing cover 10. When the brewing mechanism is in operation, the injection mechanism injects high-pressure hot water into the brewing cover 10 through the water injection port, and the hot water finally enters the beverage tank 31 of the brewing chamber through the water injection hole of the lower cover 14.

In the closed state of the brewing chamber, the edge of the sealing ring 13 is in sealing engagement with the edge of the beverage trough 31 of the beverage container 30. Here, the lateral groove 19 refers to a groove that is perpendicular or substantially perpendicular to the moving direction of the brewing cover 10. The brewing cover is moved up and down by the drive mechanism 40 to effect opening and closing operations of the brewing chamber.

As shown in FIG. 1, the drive mechanism 40 includes a handle 41 hinged to the brewing cover bracket 20, and a slider 42 hinged to the handle 41, the slider 42 being embedded in the transverse groove 19 of the brewing cover 10. The brewing chamber is opened when the handle 41 is in the first extreme position of the active stroke, the brewing chamber is closed when the handle 41 is in the second extreme position, and the handle 41 has a dead center position between the first extreme position and the second extreme position. The so-called dead point position, that is, the direction in which the thrust applied by the brewing cover 10 to the slider 42 is perpendicular to the direction in which the slider 42 is moved in this position, the position at which the handle 41 is located. During the clockwise pressing of the handle 41 to close the brewing chamber, the handle 41 will pass the dead center position and eventually reach the second extreme position, at which the drive mechanism is self-locking, which provides a greater locking force to the brewing chamber. This allows the brewing chamber to withstand greater brewing pressure without having to worry about the sliding position of the brewing lid during the brewing process.

Further, during the rotation of the handle 41, the slider 42 is moved in a circular motion with the handle 41, and the movement can be decomposed into a vertical movement in the lifting direction of the brewing cover and a movement in the extending direction of the lateral groove 19. Among them, the movement of the slider 42 in the vertical direction will force the brewing cover to move, that is, the lifting movement, and the movement of the slider 42 along the extending direction of the transverse groove 19 does not affect the movement of the brewing cover. When the transverse groove 19 is perpendicular to the lifting direction of the brewing cover, the slider 42 moves in the same displacement, and the distance at which the brewing cover moves in the vertical direction is the largest. That is, at this time, the rotating handle 41 is rotated through the same angle, and the displacement of the brewing lid is maximized.

In addition, for the brewing mechanism of the same type as the present invention, the opening manner of the brewing chamber can be divided into a rotary open cover type and a piston open cover type. Regardless of the type of opening, it is necessary to ensure that the brewing chamber can withstand a certain high pressure, so that the driving mechanism needs to provide sufficient pressing force in addition to being able to easily open and close the brewing chamber. For example, the Chinese invention patent specification (CN 0051859C, issued on July 29, 2009, discloses a device for preparing coffee, which implements a cover 34 (provided in the second outer casing portion 44) and a retainer for the brewing mechanism by means of a clamping device 70 The locking of 4 (provided in the first outer casing portion 2). The clamping device 70 locks the cover 34 and the retainer by the snap fit of the recess 72 and the cam 74 by a recess 72 provided in the first outer casing portion 2 and a cam 74 provided on the second outer casing portion 34. 4. However, the locking method in this way makes the mechanical structure of the drive mechanism more complicated. The driving mechanism of the improved scheme can realize effective locking only by using a limited number of components, is simpler and more reliable than the locking mode of the existing brewing mechanism, and is simpler in operation, thus having obvious substantial features and progress.

As shown in FIG. 1 and FIG. 3, the pressure relief valve 90 includes a valve body 91, a pressure relief port 92 disposed on the valve body 91, and a brewing chamber interface 93 disposed in the valve body 91 for opening or closing. The pressure relief port 92 and the valve stem 94 of the brewing chamber interface 93, as well as the return member 95 for driving the valve stem 94 back to the pressure relief position. In order to drive the movement of the valve stem 94, as shown in FIG. 2, the handle 41 of the drive mechanism 40 is further provided with a driving portion 43 for driving the valve stem 94 to move to the working position. The reset member 95 of the pressure relief valve 90 may be a resilient member such as a spring. The pressure relief position of the pressure relief valve 90 refers to the position of the valve stem 94 when the brewing chamber interface 93 and the pressure relief port 92 are in communication. The working position refers to the position corresponding to the pressure relief position, specifically the position where the valve stem 94 is located when the brewing chamber interface 93 and the pressure relief interface 92 are cut off. In addition, the brewing cap 10 is also provided with a pressure relief port (not shown) connected to the brewing chamber interface 93 of the pressure relief valve 90. When the user starts to rotate the handle 41 to open the brewing chamber, the driving portion 43 on the handle 41 will be separated from the valve stem 94, thereby releasing the valve stem 94 to the pressure releasing position to release the pressure in the brewing chamber in advance, and the brewing cover 10 is still Maintain a good seal with the beverage box 30. The user then continues to rotate the handle 41 and eventually opens the brewing chamber completely. Therefore, the brewing mechanism can avoid the accident of frying.

In addition, in order to enable the beverage box 30 to be accurately inserted into a designated position in the beverage box holder 50, the brewing mechanism is further provided with a first guiding mechanism and a second guiding mechanism. Of course, only the first guiding mechanism or the second is used. The guiding mechanism can also achieve the purpose of accurately positioning the beverage box 30.

As shown in FIG. 1, the first guiding mechanism includes positioning grooves 81 and positioning projections 82, and/or two magnets respectively disposed on the beverage container 30 and the brewing cover 10. Here, the positioning groove 81 and the positioning protrusion 82 are respectively disposed on the beverage box and the brewing cover, and it is not indicated that the positioning groove 81 can only be disposed on the beverage box, or the positioning protrusion 82 can only be disposed on the brewing cover, but is specified The bit groove 81 and the positioning protrusion 82 need to be separately disposed on the two members to achieve the uneven positioning. Therefore, the positioning groove 81 or the positioning projection 82 can be disposed on the beverage box or on the brewing cover. The first guiding mechanism may be a set of guiding members or two sets of guiding members. For example, the first guiding mechanism may include both the positioning groove 81 and the positioning protrusion 82, and also includes two magnets. In addition, the first guiding mechanism can also be other common mechanisms capable of achieving coordinated positioning. Additionally, similar to the first guiding mechanism, the second guiding mechanism includes positioning grooves and positioning projections, and/or two magnets 83, respectively disposed on the beverage cartridge holder and the beverage cartridge.

Further, as shown in Figures 1, 2, and 4, the beverage outlet 32 of the beverage container 30 is an aperture 33, and the beverage cartridge 30 is further provided with a baffle 34 opposite the beverage outlet. The coffee flows out of the small holes 33 of the beverage box and is delivered to the user's beverage container through the beverage outlet slot 51 below the beverage box holder 50. The small hole 33 here means that the pore diameter is small enough for the coffee in the brewing chamber to rush to the baffle 34 at a faster speed under the pressure and then splashed in the air, and the coffee can be thoroughly mixed with the air to form an excellent mouthfeel. coffee. Since it is well known to those skilled in the art to reduce the liquid outlet to accelerate the liquid flow rate, the size of the small holes need not be specifically limited as long as the size of the small holes 33 can achieve the above object.

Further, as shown in FIGS. 1 and 5, the brewing cover 10 further includes a release elastic sheet 18 that protrudes from the surface of the brewing cover 10. The anti-adhesive elastic sheet 18 can ensure that the coffee cake remains in the beverage tank 31 of the beverage box 30, preventing the sticking on the brewing lid 10 from being removed after opening the brewing chamber.

A beverage making device using a beverage cake or a capsule according to a second aspect, comprising a fixing frame and a brewing mechanism, a hot water system and a control system respectively disposed on the fixing frame, the brewing mechanism being the first technical solution Drink brewing agency. Since the beverage brewing mechanism of the first technical solution has been described in detail above, the second technical solution will not be described in detail herein.

Claims (11)

1. A beverage brewing mechanism comprising a brewing chamber, a pressure relief valve (90) coupled to the brewing chamber, and a drive mechanism (40) for driving the brewing chamber and the pressure relief valve (90) to open or close, wherein The brewing mechanism further includes an injection mechanism for injecting hot water into the brewing chamber; further, the pressure relief valve (90) includes: a valve body (91), and a pressure relief interface (92) disposed on the valve body (91) And a brewing chamber interface (93), a valve stem (94) disposed in the valve body (91) for opening or closing the pressure relief interface (92) and the brewing chamber interface (93).
2. A beverage brewing mechanism according to claim 1, wherein the brewing mechanism further comprises a detachable beverage container (30) for placing the product to be extracted, and forming the brewing chamber with the beverage container (30) And moving the beverage box (30) to open or close the brewing lid (10) of the brewing chamber, the brewing lid (10) is connected to the driving mechanism (40), and the beverage box (30) and the brewing lid (10) A first guiding mechanism positioned in cooperation with each other is provided; the injection mechanism is the brewing cover (10).
3. A beverage brewing mechanism according to claim 2, wherein said first guiding means comprises positioning grooves (81) and positioning projections respectively provided on said beverage container (30) and brewing cover (10) (82), and / or two magnets.
4. The beverage brewing mechanism according to claim 3, wherein the brewing mechanism further comprises a brewing cover bracket (20), wherein the brewing lid bracket (20) is provided for accommodating the brewing cover (10) therein a cavity for lifting and moving; further, the beverage box (30) is provided with a beverage tank (31) for accommodating the product to be extracted, and the beverage tank (31) and the brewing lid (10) form the brewing chamber, and the brewing chamber A beverage outlet (32) is provided in the beverage tank (31).
5. A beverage brewing mechanism according to claim 4, wherein said brewing cover (10) is provided with a transverse groove (19); said pressure relief valve (90) is provided for driving the valve stem (94) to recover a resetting member (95) to a pressure relief position; the drive mechanism (40) comprising: a handle (41) hinged to the brewing cover bracket (20), embedded in the transverse groove (19) and a slider (42) hinged by the handle (41), and a driving portion (43) for driving the valve stem (94) to move to the working position, and the handle (41) is at the first extreme position of the movable stroke The brewing chamber is opened and the brewing chamber is closed when the handle (41) is in the second extreme position.
6. A beverage brewing mechanism according to claim 5, wherein said handle (41) has a dead center position between the first extreme position and the second extreme position.
7. The beverage brewing mechanism according to claim 6, wherein the beverage outlet (32) of the beverage container (30) is a small hole (33), and the beverage container (30) is further provided with the beverage outlet. Opposite baffle (34).
8. The beverage brewing mechanism according to any one of claims 2 to 7, characterized in that the brewing mechanism further comprises a beverage box holder (50) for inserting the beverage box (30); the brewing cover (10) Also included is a release tab (18) that protrudes from the surface of the brewing cover (10).
9. The beverage brewing mechanism according to claim 8, wherein the beverage box holder (50) and the beverage box (30) are provided with a second guiding mechanism that is cooperatively positioned, and the second guiding mechanism A positioning groove and a positioning projection, and/or two magnets (83) respectively disposed on the beverage box holder and the beverage box are included.
10. The beverage brewing mechanism according to any one of claims 2 to 7, characterized in that the brewing cover (10) comprises: a cover body (11), an upper cover (12) disposed above the cover body, and a cover body a lower sealing ring (13), and a lower cover (14) disposed in the sealing ring and having a water injection hole thereon, the lateral groove (19) is disposed on the upper cover; the brewing chamber is in a closed state The edge of the lower sealing ring is in sealing engagement with the edge of the beverage trough (31) of the beverage container (30).
11. A beverage making device using a beverage cake or capsule, comprising a fixing frame and a brewing mechanism, a hot water system and a control system respectively disposed on the fixing frame, wherein the brewing mechanism is according to any one of claims 1 to 10. Drink brewing agency.

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