CN219940349U - Coffee machine - Google Patents

Abstract

The utility model relates to a coffee machine, comprising: a brewer having a brew chamber; a body provided with a connecting seat for detachably connecting the brewing device, wherein the connecting seat is provided with a first channel communicated with the brewing cavity; the pressure relief valve assembly comprises a valve body and a valve core arranged on the valve body, the upper part of the valve body is defined with a pressure relief channel communicated with the first channel of the connecting seat, and the valve core is movably arranged in the pressure relief channel of the valve body and controls the connection and disconnection of the pressure relief channel along with the position change of the valve core; when the brewing device is arranged in place on the connecting seat and is in a brewing position state, the brewing device directly or indirectly acts on the valve core to drive the valve core to move and keep the valve core at a position for closing the pressure release channel; and in a state that the brewing device is separated from the brewing position on the connecting seat, the pressure applied to the valve core is released to allow the valve core to reversely move so as to open the pressure release channel. The situation that hot coffee or coffee grounds in the brewing cavity are splashed out due to misoperation of a user is effectively avoided, and the use experience of the user is improved.

Description

Coffee machine

Technical Field

The utility model relates to the technical field of household appliances, in particular to a coffee machine.

Background

When coffee brewing is performed by a coffee machine with a powder pressing device, coffee powder is usually required to be pressed into the powder pressing device, the powder pressing device is arranged at a water outlet of a brewing assembly, water is heated to a preset temperature by a heating pot and then is conveyed to the brewing assembly, the water flows into the powder pressing device from the water outlet of the brewing assembly for coffee extraction, and obtained coffee liquid flows into a coffee cup through an outlet at the bottom of the powder pressing device. In general, a part of pressure remains in a brewing chamber of a pressure coffee machine immediately after coffee is brewed, and under the condition that pressure is not released in advance, a brewing device is opened, hot coffee or coffee grounds in the brewing chamber may splash out, and a pressure release device is arranged to release pressure in advance in order to avoid danger or inconvenience.

Chinese patent application No. CN202220863432.5 (grant bulletin No. CN 217118165U) discloses a coffee machine comprising a heat-generating boiler assembly having a hot water outlet for outputting hot water, a coffee brewing assembly, a pressure relief assembly and a valve assembly; the valve assembly comprises a valve body, a first valve core and a valve rod, a first valve cavity is formed in the valve body, and a first opening, a second opening, a third opening and a fourth opening are formed in the inner wall of the first valve cavity at intervals along the axial direction in sequence; the first valve core is arranged in the first valve cavity, and a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring are sequentially sleeved on the peripheral surface of the first valve core at intervals; the valve rod is rotatably arranged at one end close to the first valve core and connected with one end of the first valve core, and the valve rod is used for driving the first valve core to move along the axial direction of the first valve cavity in the rotating process so as to switch between a first position and a second position. After coffee is brewed, the valve rod drives the first valve core to move, so that waterway connection between the heating pot component and the coffee brewing component can be cut off, the coffee brewing component and the pressure relief component can be communicated, residual heat steam of the coffee brewing component can be released through the pressure relief component, the phenomenon of powder frying during next coffee brewing can be avoided, and the valve component is simple in structure, convenient to operate, beneficial to reducing production cost and improving user experience.

However, the coffee machine in the above patent application has a certain disadvantage that when the valve assembly needs to be switched to the pressure release state, the valve rod is driven by operating the operating lever or the knob on the machine body, and when the user is unfamiliar with the operating function, the user may forget to operate the knob to release the pressure and directly unscrew the coffee brewing assembly, so that the condition that hot coffee or coffee grounds in the brewing cavity splash exists, and the use experience of the user is reduced.

Disclosure of Invention

The utility model aims to solve the technical problem of the prior art, and provides a coffee machine capable of automatically realizing the on and off of a pressure release valve in the process of disassembling and assembling a brewing device.

The technical scheme adopted for solving the technical problems is as follows: a coffee maker, comprising:

a brewer having a brew chamber;

the machine body is provided with a connecting seat for the detachable connection of the brewing device, and the connecting seat is provided with a first channel communicated with the brewing cavity;

the pressure relief valve assembly comprises a valve body and a valve core arranged on the valve body, wherein a pressure relief channel communicated with the first channel of the connecting seat is defined on the valve body, and the valve core is movably arranged in the pressure relief channel of the valve body and is used for controlling the on and off of the pressure relief channel along with the position change of the valve core;

when the brewing device is arranged in place on the connecting seat and is in a brewing position state, the brewing device directly or indirectly acts on the valve core to drive the valve core to move and keep the valve core at a position for closing the pressure release channel;

and under the state that the brewing device is separated from the brewing position of the connecting seat, the pressure of the valve core is released by the brewing device so as to allow the valve core to reversely move to open the pressure release channel.

In order to facilitate assembly of components such as the pressure relief valve assembly, the pressure relief valve assembly further comprises a linkage piece which is linked with the valve core, and when the brewing device is installed on the connecting seat in place, the brewing device presses the valve core through the linkage piece to drive the valve core to move and keep the valve core at a position for closing the pressure relief channel. It is contemplated that the brewer may act directly on the spool of the pressure relief valve assembly or it may be understood that the linkage described above is of unitary design with the spool.

In order to simplify the structure of the valve core, the pressure relief channel of the valve body is provided with a valve port, the valve core comprises a valve rod, the valve rod is vertically movably arranged in the pressure relief channel and can move between a first position for opening the valve port and a second position for closing the valve port, and an elastic piece is further arranged in the valve body, acts on the valve rod and enables the valve rod to always move from the second position to the first position.

In order to realize the installation of ejector pin, the lower extreme of valve rod wears out the valve body exposes, the connecting seat has the orientation the inside wall of dashing the bubble ware and deviate from the outside wall of dashing the bubble ware, have on the connecting seat from the outside wall link up to the installation pore of inside wall, the linkage is can locate for upper and lower activity ejector pin in the installation pore, the lower extreme of ejector pin with the outer peripheral edge of dashing the bubble ware after installing in place on the connecting seat offsets, the upper end of ejector pin with the lower extreme of valve rod offsets.

In order to avoid the leakage of the brewing cavity caused by the installation of the ejector rod, the installation position of the ejector rod needs to be reasonably selected, the connecting seat is provided with a sealing piece matched with the outer periphery of the brewing device in a sealing way, and the lower port of the installation pore canal is positioned on the radial outer side of the position of the sealing piece on the inner side wall of the connecting seat.

In order to form the valve port in the valve body and ensure the stability of axial movement of the valve rod, the inner peripheral wall of the pressure release channel of the valve body is provided with a locally radially inwards contracted necking part serving as the valve port, the pressure release channel comprises an upper section part positioned above the valve port and a lower section part positioned below the valve port, the upper end of the valve rod penetrates through the valve port and stretches into the upper section part of the pressure release channel, and the elastic piece is a spring arranged in the upper section part of the pressure release channel and is propped against the valve rod.

The elastic piece can adopt various prior art and can comprise various elastic elements such as a pressure spring, a torsion spring, a reed and the like, but in order to better match the valve rod, the valve rod is provided with a limit convex part extending outwards in a radial direction, and the spring is sleeved at the upper end of the valve rod and props against the limit convex part.

In order to conveniently install the valve rod and the spring in the valve body, the valve body is further provided with an installation opening communicated with the upper section of the pressure relief channel, a plug is arranged at the installation opening, and the inner wall of the plug is provided with a guide pore canal for limiting the upper end part of the valve rod in an axial sliding manner.

In order to ensure that the brewing device flexibly drives the ejector rod to move upwards in the installation process, the problem of blocking is avoided, the brewing device is connected to the connecting seat in a rotary installation mode, and the bottom of the ejector rod is provided with a guide inclined surface which gradually inclines downwards along the rotation direction of the brewing device.

In order to realize firm installation of the brewing device, the connecting seat is provided with a downward extending annular wall, a first limiting blocking edge which is arranged at intervals along the circumferential direction and extends radially inwards is arranged at the bottom edge of the annular wall, a second limiting blocking edge which is arranged at intervals along the circumferential direction and extends radially outwards is arranged at the opening at the top of the brewing device, and the second limiting blocking edge of the brewing device is limited above the first limiting blocking edge when the brewing device is in an installed state.

In general, the pressure relief channel may be in direct communication with the external space, in particular in fluid communication with a water tank of the coffee machine or a waste cartridge for collecting waste water.

Compared with the prior art, the utility model has the advantages that: when the brewer is in the brewing position when the connecting seat of the coffee machine body is in place, the brewer can directly or indirectly act on the valve core to drive the valve core to move and keep the valve core at the position for closing the pressure release channel, and when the brewer is in a state of being separated from the brewing position on the connecting seat, the brewer can release the pressure on the valve core to allow the valve core to move reversely to open the pressure release channel. The coffee machine adopting the structure effectively avoids the condition that hot coffee or coffee grounds in the brewing cavity are splashed out due to misoperation of a user, and improves the use experience of the user. On the other hand, the pressure relief valve assembly is driven by the brewing device of the coffee machine to relieve pressure, so that the internal space is saved, and compared with the prior art, the pressure relief valve assembly is simpler in structure, lower in cost and easy to process and assemble due to the fact that the operating rod and other parts are additionally arranged.

Drawings

Fig. 1 is a schematic perspective view of parts of a coffee machine according to an embodiment of the present utility model (parts such as a machine body are omitted);

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1 (brewer in installed state);

fig. 4 is a cross-sectional view of fig. 1 (the brewer is in a disassembled state).

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Referring to fig. 1-4, a coffee maker includes a body (not shown) having a connection base 20 to which the brewer 10 is detachably connected, and a brewer 10. The connection mount 20 has an inner side wall 202 facing the brewer 10 (i.e., facing downward) and an outer side wall 201 facing away from the brewer 10 (i.e., facing upward). Specifically, the connection holder 20 has a downwardly extending annular wall 23, and the brewer 10 is connected to the annular wall 23 of the connection holder 20, wherein a seal 25 is provided on an inner wall of the connection holder 20 at an inner portion defined by the annular wall 23, and an outer peripheral edge of the brewer 10 is in sealing contact with the seal 25 on the connection holder 20 after the brewer 10 is connected to the connection holder 20.

The brewer 10 has an open-topped brew chamber 100 and is connected in a rotatable mounting to the annular wall 23 of the connection base 20. The brewer 10 also has a handle 12 for ease of handling by a user to mount and dismount the brewer 10 from the connector 20.

At the bottom edge of the annular wall 23 there are first limit stops 231 arranged at circumferentially spaced intervals and extending radially inwards, in this embodiment the first limit stops 231 have three evenly spaced apart circumferentially along the annular wall 23. Correspondingly, the top opening of the brewer 10 is provided with second limit stop edges 11 which are arranged at intervals along the circumferential direction and extend radially outwards, and the second limit stop edges 11 also have three limit stop edges. More specifically, the top surface of the first limit stop edge 231 on the annular wall 23 of the connection seat 20 has a slope gradually inclining upwards along the rotation direction of the brewer 10, and during the rotation installation process of the brewer 10, the second limit stop edge 11 of the brewer 10 is limited on the first limit stop edge 231 and slightly rises relative to the connection seat 20 to squeeze the sealing element 25 on the connection seat 20, thereby ensuring the connection firmness of the brewer 10 and the sealing performance of the brewing cavity 100.

The coffee machine body is also provided with a pressure relief valve assembly 30, and the pressure relief valve assembly 30 comprises a valve body 31 and a valve core arranged on the valve body 31. Specifically, the connection seat 20 of the body has a first passage 22 communicating with the brewing chamber 100. The valve body 31 defines a pressure release channel 32 communicating with the first channel 22 of the connection seat 20, in this embodiment, for reasonable spatial arrangement, the pressure release channel 32 includes a vertical section, a first horizontal section 32a communicating with a lower end of the vertical section, and a second horizontal section 32b communicating with an upper end of the vertical section, wherein a port of the first horizontal section 32a may be connected with the first channel 22 of the connection seat 20, and a port of the second horizontal section 32b may be communicated with a water tank of the coffee machine or a waste water tank for collecting waste water through a corresponding pipe. The valve core in this embodiment is a valve rod 33, and the valve rod 33 is axially movably disposed in the vertical section of the pressure relief channel 32, and the inner peripheral wall of the vertical section of the pressure relief channel 32 has a reduced mouth, which forms a valve port 320. The outer peripheral wall of the valve rod 33 is also sleeved with a first sealing ring 332, and when the valve rod 33 moves up to the limit position, the first sealing ring 332 on the valve rod 33 seals the valve port 320, so that the pressure release channel 32 is closed. The vertical section 32c of the relief passage 32 is divided into an upper section 321 above the valve port 320 or a lower section 322 below the valve port 320, with the position of the valve port 320 being defined. The top of the valve stem 33 may extend through the valve port 320 into the upper section 321 of the relief passageway 32.

The valve body 31 has a mounting opening communicating with the upper section 321 of the pressure release passage 32, a plug 35 is provided at the mounting opening, and a guide duct 350 in which the upper end portion of the valve rod 33 is axially slidably retained is provided on the inner wall of the plug 35. A spring is further arranged in the vertical section of the pressure release channel 32, and is sleeved on the valve rod 33, the first end of the spring abuts against the plug 35, and the second end abuts against the limit convex part 331 on the peripheral wall of the valve rod 33, so that the valve rod 33 always has a downward movement trend. After removing the plug 35, a spring or the like can be fitted into the pressure release passage 32 from the mounting port. In order to ensure the tightness of the installation opening of the plug 35 and the valve body 31, a third sealing ring 351 is arranged at the periphery of a section of the installation opening, into which the plug 35 is plugged. The valve body 31 is provided with a through hole through which the lower end of the valve stem 33 passes out of the valve body 31 at a position corresponding to the lower end of the vertical section 32c of the pressure release passage 32. The outer peripheral wall of the lower end part of the valve rod 33 is also sleeved with a second sealing ring 333 capable of moving up and down along with the second sealing ring 333, and the second sealing ring 333 is in sealing contact with the lower end part of the vertical section 32c of the pressure release channel 32, so that the tightness of the valve rod 33 in the moving process is ensured, and steam leakage at the through hole is avoided.

An important utility model point of this embodiment is: the mounting and dismounting actions of the brewer 10 are linked with the valve core of the pressure relief valve assembly 30, specifically, in the state that the brewer 10 is mounted in place on the connecting seat 20 and is in the brewing position, the brewer 10 directly or indirectly acts on the valve core to drive the valve core to move upwards and keep the pressure relief channel 32 at the closed position; in the state in which the brewer 10 is out of its brewing position on the connector 20, the brewer 10 releases the pressure on the valve spool to allow the valve spool to move in reverse (downward) under the action of the resilient member 34 to open the pressure relief channel 32.

The connecting seat 20 is provided with a mounting hole 21 penetrating from the outer side wall 201 to the inner side wall 202, and a push rod capable of moving up and down is arranged in the mounting hole 21 as a linkage piece 24. The upper end of the ejector rod always abuts against the lower end of the valve rod 33, wherein in the process of installing the brewer 10 on the connecting seat 20, the peripheral edge (specifically, the second limit stop edge 11) of the brewer 10 abuts against the lower end of the ejector rod and drives the ejector rod to move upwards, the ejector rod presses the valve core, overcomes the spring force, drives the valve rod 33 to move, and enables the valve rod 33 to be kept at a position for closing the pressure relief channel 32. In order to ensure that the brewer 10 flexibly moves the ejector rod upwards during the installation process, the problem of jamming is avoided, the bottom of the ejector rod is provided with a guiding inclined surface 241 which gradually inclines downwards along the rotation direction of the brewer 10, as shown in detail in fig. 2.

Referring again to fig. 3 and 4, in order to avoid leakage from the brewing chamber 100 due to the installation of the ejector pins (opening of the mounting hole 21 in the connection base 20), the lower port of the mounting hole 21 is located radially outside the position of the sealing member 25 on the inner side wall 202 of the connection base 20, i.e. is offset from the brewing chamber 100 of the brewer 10.

When the brewer 10 is in the brew position with the connector 20 of the body of the coffee machine in place, the brewer 10 can act directly or indirectly on the valve spool, moving the valve spool and holding it in a position closing the pressure relief channel 32, creating a closed brew chamber 100 for extracting coffee, ensuring sufficient pressure for extracting coffee. In the state that the brewer 10 is separated from the brewing position on the connecting seat 20, the brewer 10 can release the pressure on the valve core to allow the valve core to move reversely to open the pressure release channel 32, so as to release the residual pressure in the brewing chamber 100. The coffee machine with the structure effectively avoids the condition that hot coffee or coffee grounds in the brewing cavity 100 are splashed out due to misoperation of a user, and improves the use experience of the user. On the other hand, the coffee machine is adopted to drive the pressure relief valve assembly 30 to relieve pressure by the self-contained brewing device 10, so that the internal space is saved, and compared with the prior art, the pressure relief valve assembly is simpler in structure, lower in cost and easy to process and assemble by additionally arranging parts such as an operating rod.

The term "fluid communication" as used herein refers to a spatial positional relationship between two components or parts (hereinafter collectively referred to as a first part and a second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow along a flow path from the first part to the second part or/and be transported to the second part, or the first part and the second part may be directly communicated with each other, or the first part and the second part may be indirectly communicated with each other through at least one third party, and the third party may be a fluid channel such as a pipe, a channel, a conduit, a flow guiding member, a hole, a groove, or the like, or a chamber allowing the fluid to flow through, or a combination thereof.

Claims (10)

1. A coffee maker, comprising:

a brewer (10) having a brew chamber (100);

a body on which a connection seat (20) is provided for the detachable connection of the brewing device (10), the connection seat (20) having a first passage (22) communicating with the brewing chamber (100);

the pressure relief valve assembly (30) comprises a valve body (31) and a valve core arranged on the valve body (31), wherein a pressure relief channel (32) communicated with the first channel (22) of the connecting seat (20) is defined on the valve body (31), and the valve core is movably arranged in the pressure relief channel (32) of the valve body (31) and is used for controlling the connection and disconnection of the pressure relief channel (32) along with the position change of the valve core;

the method is characterized in that: in a state that the brewing device (10) is arranged on the connecting seat (20) in place and is in a brewing position, the brewing device (10) directly or indirectly acts on the valve core to drive the valve core to move and keep the valve core at a position for closing the pressure relief channel (32);

in a state that the brewing device (10) is separated from the brewing position on the connecting seat (20), the pressure of the valve core is released by the brewing device (10) so as to allow the valve core to reversely move to open the pressure release channel (32).

2. A coffee machine as claimed in claim 1, characterized in that: the pressure relief device also comprises a linkage piece (24) which is linked with the valve core, and when the brewing device (10) is installed on the connecting seat (20) in place, the brewing device (10) presses the valve core through the linkage piece (24) to drive the valve core to move and keep the valve core at a position for closing the pressure relief channel (32).

3. A coffee machine as claimed in claim 2, characterized in that: the valve is characterized in that a valve port (320) is arranged in a pressure relief channel (32) of the valve body (31), the valve core comprises a valve rod (33), the valve rod (33) is vertically movably arranged in the pressure relief channel (32) and can move between a first position for opening the valve port (320) and a second position for closing the valve port (320), an elastic piece (34) is further arranged in the valve body (31), the elastic piece (34) acts on the valve rod (33), and the valve rod (33) always has a trend of moving from the second position to the first position.

4. A coffee machine as claimed in claim 3, characterized in that: the lower extreme of valve rod (33) wears out valve body (31) and exposes, connecting seat (20) have towards inside wall (202) of brewing ware (10) and deviate from outside wall (201) of brewing ware (10), have on connecting seat (20) from outside wall (201) link up to install pore (21) of inside wall (202), link (24) are can locate for upper and lower activity ejector pin in installing pore (21), the lower extreme of ejector pin offsets along the periphery of brewing ware (10) after installing on connecting seat (20) put in place, the upper end of ejector pin with the lower extreme of valve rod (33).

5. A coffee machine as claimed in claim 4, characterized in that: the connecting seat (20) is provided with a sealing piece (25) which is matched with the outer periphery of the brewing device (10) in a sealing way, and the lower port of the mounting pore canal (21) is positioned on the radial outer side of the position of the sealing piece (25) on the inner side wall (202) of the connecting seat (20).

6. A coffee machine as claimed in claim 3, characterized in that: the inner peripheral wall of a pressure relief channel (32) of the valve body (31) is provided with a locally radially inwards contracted necking part serving as the valve port (320), the pressure relief channel (32) comprises an upper section part (321) positioned above the valve port (320) and a lower section part (322) positioned below the valve port (320), the upper end of the valve rod (33) penetrates through the valve port (320) and stretches into the upper section part (321) of the pressure relief channel (32), and the elastic piece (34) is a spring arranged in the upper section part (321) of the pressure relief channel (32), and the spring is propped against the valve rod (33).

7. The coffee machine of claim 6, wherein: the valve rod (33) is provided with a limit convex part (331) extending outwards in the radial direction, and the spring is sleeved at the upper end of the valve rod (33) and props against the limit convex part (331).

8. A coffee machine as claimed in claim 4, characterized in that: the brewing device (10) is connected to the connecting seat (20) in a rotary installation mode, and the bottom of the ejector rod is provided with a guide inclined surface (241) which gradually inclines downwards along the rotation direction of the brewing device (10).

9. A coffee machine as claimed in claim 8, characterized in that: the connecting seat (20) is provided with a downward extending annular wall (23), a first limiting blocking edge (231) which is arranged at intervals along the circumferential direction and extends radially inwards is arranged at the bottom edge of the annular wall (23), a second limiting blocking edge (11) which is arranged at intervals along the circumferential direction and extends radially outwards is arranged at the top opening of the brewing device (10), and the second limiting blocking edge (11) of the brewing device (10) is limited on the first limiting blocking edge (231) when the brewing device (10) is in a mounted in-place state.

10. Coffee machine according to any one of claims 1 to 7, characterized in that: the pressure relief channel (32) is in fluid communication with a water tank of the coffee machine or a waste cartridge for collecting waste water.