Brewing head for coffee machine

Abstract

The utility model provides a brewing head for a coffee machine, which comprises a fixed part and a movable part, and the movable part is sleeved at the lower end of the fixed part and can vertically move relative to the fixed part; a spring group is embedded between the movable part and the fixed part and is used for applying elastic force for driving the movable part to move downwards to reset to the movable part; the brewing head further comprises a water valve, the water valve is fixed to the upper end of the fixing piece, the water inlet end of the water valve is used for being connected with a hot water supply unit in the coffee machine, and the water outlet end of the water valve is used for being connected with a brewing cavity in the coffee machine. A valve rod of the water valve abuts against the upper end of the movable piece. Through the arrangement of the water valve, the water valve can automatically control the on-off of hot water from the hot water supply unit, so that the coffee machine is simpler in structure, and has the advantages of convenience in control and low cost.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machines, in particular to a brewing head for a coffee machine. Background Art

[0002] The coffee machine brewer is the core component of the coffee machine for brewing coffee powder. When the coffee machine brewers currently on the market are brewing coffee powder, the hot water supply unit in the coffee machine can supply hot water to the coffee machine brewer through the solenoid valve, and when the hot water in the coffee machine brewer is sufficient, the solenoid valve can be turned off to stop the hot water from entering the brewer. Since the supply of hot water needs to be controlled by the solenoid valve, the coffee machine brewer has the disadvantages of complex structure and high cost, as well as a complex control method. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a brewing head for a coffee machine, which can automatically realize on-off control of hot water from a hot water supply unit through the setting of a water valve, that is, it can make the structure of the coffee machine simpler and has the advantages of convenient control and low cost.

[0004] The utility model provides a brewing head for a coffee machine, comprising a fixed part and a movable part, wherein the movable part is sleeved on the lower end of the fixed part and can move vertically relative to the fixed part; a spring group is embedded between the movable part and the fixed part, and the spring group is used to apply an elastic force to the movable part to drive the movable part to move downward and reset; the brewing head also includes a water valve, which is fixed to the upper end of the fixed part, the water inlet end of the water valve is used to be connected to a hot water supply unit in the coffee machine, and the water outlet end of the water valve is used to be connected to a brewing chamber in the coffee machine; the valve stem of the water valve abuts against the upper end of the movable part, and when the movable part moves upward relative to the fixed part, the movable part is used to push the valve stem to open the water valve; a first spring is provided between the valve stem of the water valve and the valve body of the water valve, and when the movable part moves downward relative to the fixed part, the first spring is used to drive the valve stem to move downward so that the flow rate of the water valve gradually decreases until it is closed.

[0005] After adopting the above structure, the utility model has an advantage that when the brewing group of the coffee machine needs to brew coffee powder, the brewing chamber in the brewing group of the coffee machine can gradually approach the brewing head and fit into the brewing head. When the brewing chamber continues to approach the brewing head, the movable part in the brewing head can move upward relative to the fixed part. At this time, the movable part can push the valve stem to open the water valve, thereby allowing hot water from the hot water supply unit to enter the brewing group. That is, through the provision of the water valve, when the movable part in the brewing head is pushed upward, the water valve can automatically allow hot water from the hot water supply unit to enter the brewing group, thereby making the structure of the coffee machine simpler and having the advantages of convenient control and low cost. In addition, when the brewing chamber in the brewing group of the coffee machine gradually separates from the brewing head, that is, when the movable part moves downward relative to the fixed part, the first spring can drive the valve stem to move downward to gradually reduce the flow rate of the water valve until it is closed, that is, the hot water supply unit can stop supplying hot water to the brewing group of the coffee machine.

[0006] In a possible embodiment, the lower end of the valve stem is sleeved with a support member, the support member is engaged with the valve stem, the first spring is sleeved on the outside of the valve stem, and the two ends of the first spring are respectively against the valve body and the support member; by adopting this structure, under the cooperation of the support member and the valve body, a reliable support effect on the first spring can be achieved, so that when the movable member moves downward relative to the fixed member, the first spring can reliably drive the valve stem to move downward to close the water valve.

[0007] In one possible embodiment, an annular groove is provided on the outer wall of the valve stem, and an annular clamping block is provided on the inner wall of the upper end of the support member, and the annular clamping block is engaged with the annular groove; by adopting this structure, under the engaged engagement of the annular clamping block and the annular groove, the support member can be reliably assembled with the valve stem, that is, it has the advantage of convenient assembly of the support member and the valve stem.

[0008] In a possible embodiment, the brewing head further includes a travel switch; the travel switch is located on the inner side of the upper end of the fixed part, the travel switch is connected to the fixed part, the travel switch is electrically connected to the controller in the coffee machine, and a boss is provided on the outer top of the movable part; when the controller in the coffee machine drives the power assembly so that the power assembly drives the brewing chamber in the coffee machine to push the movable part upward to the limit position, the boss is used to trigger the trigger end of the travel switch so that the controller stops driving the power assembly; through the setting of the travel switch, when the controller in the coffee machine drives the power assembly so that the power assembly drives the brewing chamber in the coffee machine to push the movable part upward to the limit position, the boss can trigger the trigger end of the travel switch so that the controller stops driving the power assembly, thereby being able to control the upper limit position of the movable part when moving upward relative to the fixed part.

[0009] In a possible embodiment, the brewing head also includes a support seat; the support seat is connected to the upper end of the fixing member, a vertical buffer structure is provided between the support seat and the fixing member, and the limit switch is embedded in the bottom of the support seat; by adopting this structure, under the action of the support seat, the support seat can play a reliable supporting role for the limit switch. In addition, under the action of the vertical buffer structure, the support seat has a certain vertical buffer function, that is, the limit switch has a certain vertical buffer function, so that when the movable part moves upward relative to the fixed part and the boss triggers the triggering end of the limit switch, it can avoid the limit switch from being damaged, that is, it can extend the service life of the limit switch.

[0010] In one possible embodiment, the vertical buffer structure includes a bolt and a second spring; a countersunk hole is provided on the support seat, and the screw portion of the bolt is movable through the countersunk hole and is threadedly connected to the upper end of the fixing member, and the second spring is sleeved on the outside of the screw portion of the bolt, and the two ends of the second spring are respectively abutted against the head of the bolt and the inner bottom of the countersunk hole; by adopting this structure, under the action of the second spring, the support seat has a certain vertical buffering function, and the support seat can have a certain vertical floating ability, that is, the travel switch has a certain vertical buffering function, so that when the movable part moves upward relative to the fixed part and the boss triggers the triggering end of the travel switch, it can avoid the travel switch from being damaged, that is, the service life of the travel switch can be extended.

[0011] In one possible embodiment, a limiting groove is provided at the upper end of the fixing member, and the support seat is vertically slidably connected in the limiting groove; by adopting this structure, the horizontal limiting effect on the support seat can be achieved, so that when the support seat floats, the support seat can be prevented from rotating relative to the fixing member, that is, the reliability of the support seat during vertical floating can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 It is a schematic cross-sectional structural diagram of the present utility model. DETAILED DESCRIPTION

[0014] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0015] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0016] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0017] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] See also Figure 1-2 As shown, the embodiment of the present application discloses a brewing head for a coffee machine, comprising a fixed part 1 and a movable part 2, wherein the movable part 2 is sleeved on the lower end of the fixed part 1 and can move vertically relative to the fixed part 1; a spring group 3 is embedded between the movable part 2 and the fixed part 1, and the spring group 3 is used to apply an elastic force to the movable part 2 to drive the movable part 2 to move downward and reset; the brewing head also includes a water valve 4, which is fixed to the upper end of the fixed part 1, the water inlet end of the water valve 4 is used to connect to the hot water supply unit in the coffee machine, and the water outlet end of the water valve 4 is used to connect to the brewing chamber in the coffee machine; a valve stem 41 of the water valve 4 abuts against the upper end of the movable part 2, when the movable part 2 moves upward relative to the fixed part 1, the movable part 2 is used to push the valve stem 41 to open the water valve 4; a first spring 5 is provided between the valve stem 41 of the water valve 4 and the valve body 42 of the water valve 4, when the movable part 2 moves downward relative to the fixed part 1, the first spring 5 is used to drive the valve stem 41 to move downward so that the flow rate of the water valve 4 gradually decreases until it is closed.

[0019] When the coffee maker is in use, the brewing chamber in the brewing chamber of the coffee machine can gradually approach the brewing head and fit into the brewing head. When the brewing chamber continues to approach the brewing head, the movable part in the brewing head can move upward relative to the fixed part. At this time, the movable part can push the valve stem to open the water valve, thereby allowing hot water from the hot water supply unit to enter the brewing chamber. That is, through the arrangement of the water valve, when the movable part in the brewing head is pushed upward, the water valve can automatically allow hot water from the hot water supply unit to enter the brewing chamber, thereby making the structure of the coffee machine simpler and having the advantages of convenient control and low cost. In addition, when the brewing chamber in the brewing chamber of the coffee machine gradually separates from the brewing head, that is, when the movable part moves downward relative to the fixed part, the first spring can drive the valve stem to move downward to gradually reduce the flow rate of the water valve until it is closed, that is, the hot water supply unit can stop supplying hot water to the brewing chamber of the coffee machine.

[0020] The lower end of the valve stem 41 is sleeved with a support member 6, which is engaged with the valve stem 41, and the first spring 5 is sleeved on the outside of the valve stem 41. The two ends of the first spring 5 are respectively against the valve body 42 and the support member 6; by adopting this structure, with the cooperation of the support member and the valve body, a reliable support effect on the first spring can be achieved, so that when the movable part moves downward relative to the fixed part, the first spring can reliably drive the valve stem to move downward to close the water valve.

[0021] An annular groove 411 is provided on the outer wall of the valve stem 41, and an annular clamping block 61 is provided on the inner wall of the upper end of the support member 6, and the annular clamping block 61 is engaged with the annular groove 411; by adopting this structure, under the engaged engagement of the annular clamping block and the annular groove, the support member can be reliably assembled with the valve stem, that is, it has the advantage of easy assembly of the support member and the valve stem.

[0022] The brewing head also includes a travel switch 7; the travel switch 7 is located on the inner side of the upper end of the fixed part 1, the travel switch 7 is connected to the fixed part 1, the travel switch 7 is electrically connected to the controller in the coffee machine, and a boss 21 is provided on the outer top of the movable part 2; when the controller in the coffee machine drives the power assembly so that the power assembly drives the brewing chamber in the coffee machine to push the movable part upward to the limit position, the boss 21 is used to trigger the trigger end of the travel switch 7 to stop the controller from driving the power assembly; through the setting of the travel switch, when the controller in the coffee machine drives the power assembly so that the power assembly drives the brewing chamber in the coffee machine to push the movable part upward to the limit position, the boss 21 can trigger the trigger end of the travel switch 7 to stop the controller from driving the power assembly, thereby controlling the upper limit position of the movable part when moving upward relative to the fixed part.

[0023] The brewing head also includes a support seat 8; the support seat 8 is connected to the upper end of the fixing member 1, and a vertical buffer structure is provided between the support seat 8 and the fixing member 1, and the limit switch 7 is embedded in the bottom of the support seat 8; by adopting this structure, under the action of the support seat, the support seat can play a reliable supporting role for the limit switch. In addition, under the action of the vertical buffer structure, the support seat has a certain vertical buffer function, that is, the limit switch has a certain vertical buffer function, so that when the movable part moves upward relative to the fixed part and the boss triggers the trigger end of the limit switch, it can avoid the limit switch from being damaged, that is, it can extend the service life of the limit switch.

[0024] The vertical buffer structure includes a bolt 9 and a second spring 10; a countersunk hole 81 is provided on the support seat 8, and the screw portion of the bolt 9 is movable through the countersunk hole 81 and is threadedly connected to the upper end of the fixing member 1, and the second spring 10 is sleeved on the outside of the screw portion of the bolt 9, and the two ends of the second spring 10 are respectively against the head of the bolt 9 and the inner bottom of the countersunk hole 81; by adopting this structure, under the action of the second spring, the support seat has a certain vertical buffering function, and the support seat can have a certain vertical floating ability, that is, the travel switch has a certain vertical buffering function, so that when the movable part moves upward relative to the fixed part and causes the boss to trigger the trigger end of the travel switch, it can avoid the travel switch from being damaged, that is, it can extend the service life of the travel switch.

[0025] A limiting groove 11 is provided at the upper end of the fixing member 1, and the support seat 8 is vertically slidably connected in the limiting groove 11; by adopting this structure, the horizontal limiting effect of the support seat can be achieved, so that when the support seat floats, the support seat can be prevented from rotating relative to the fixing member, that is, the reliability of the support seat during vertical floating can be improved.

[0026] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A brewing head for a coffee machine, comprising a fixed part (1) and a movable part (2), wherein the movable part (2) is sleeved on the lower end of the fixed part (1) and can move vertically relative to the fixed part (1); a spring group (3) is embedded between the movable part (2) and the fixed part (1), and the spring group (3) is used to apply an elastic force to the movable part (2) to drive the movable part (2) to move downward and return to its original position; and the characteristics are: The brewing head further comprises a water valve (4), the water valve (4) being fixed to the upper end of the fixing member (1), the water inlet end of the water valve (4) being used to connect to the hot water supply unit in the coffee machine, and the water outlet end of the water valve (4) being used to connect to the brewing chamber in the coffee machine; the valve stem (41) of the water valve (4) abuts against the upper end of the movable member (2), and when the movable member (2) moves upward relative to the fixing member (1), the movable member (2) is used to push the valve stem (41) to open the water valve (4); a first spring (5) is provided between the valve stem (41) of the water valve (4) and the valve body (42) of the water valve (4), and when the movable member (2) moves downward relative to the fixing member (1), the first spring (5) is used to drive the valve stem (41) to move downward so that the flow rate of the water valve (4) gradually decreases until it is closed.

2. The brewing head for a coffee machine according to claim 1, characterized in that: The lower end of the valve stem (41) is sleeved with a support member (6), and the support member (6) is engaged with the valve stem (41). The first spring (5) is sleeved on the outside of the valve stem (41), and the two ends of the first spring (5) are respectively in contact with the valve body (42) and the support member (6).

3. The brewing head for a coffee machine according to claim 2, characterized in that: An annular clamping groove (411) is provided on the outer wall of the valve stem (41), and an annular clamping block (61) is provided on the inner wall of the upper end of the support member (6), and the annular clamping block (61) is engaged with the annular clamping groove (411).

4. The brewing head for a coffee machine according to any one of claims 1 to 3, characterized in that: The brewing head further comprises a travel switch (7); the travel switch (7) is located on the inner side of the upper end of the fixing member (1), the travel switch (7) is connected to the fixing member (1), the travel switch (7) is electrically connected to the controller in the coffee machine, and a boss (21) is provided on the outer top of the movable member (2); when the controller in the coffee machine drives the power assembly so that the power assembly drives the brewing chamber in the coffee machine to push the movable member upward to the limit position, the boss (21) is used to trigger the trigger end of the travel switch (7) so that the controller stops driving the power assembly.

5. The brewing head for a coffee machine according to claim 4, characterized in that: The brewing head further comprises a support seat (8); the support seat (8) is connected to the upper end of the fixing member (1); a vertical buffer structure is provided between the support seat (8) and the fixing member (1); and the travel switch (7) is embedded in the bottom of the support seat (8).

6. The brewing head for a coffee machine according to claim 5, characterized in that: The vertical buffer structure includes a bolt (9) and a second spring (10); a countersunk hole (81) is provided on the support seat (8); the screw portion of the bolt (9) is movable through the countersunk hole (81) and is threadedly connected to the upper end of the fixing member (1); the second spring (10) is sleeved on the outside of the screw portion of the bolt (9); and the two ends of the second spring (10) are respectively in contact with the head of the bolt (9) and the inner bottom of the countersunk hole (81).

7. The brewing head for a coffee machine according to claim 6, characterized in that: A limiting groove (11) is provided at the upper end of the fixing member (1), and the supporting seat (8) is vertically slidably connected in the limiting groove (11).

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