Funnel assembly for coffee machine

Abstract

The invention discloses a funnel assembly for a coffee machine. The funnel assembly is characterized by comprising a funnel body (1), the sealing ring (2) is arranged in the funnel body (1), the periphery of the sealing ring (2) is in sealing fit with the inner wall of the funnel body (1), and an annular clamping groove (21) is formed in the inner peripheral wall in the circumferential direction; the first filter disc (3) is provided with a plurality of filter holes (31) arranged at intervals; the second filter disc (4) is provided with a distribution hole (41); the funnel assembly at least has two states: in the first state, the first filter disc (3) is stacked above the second filter disc (4), and the peripheral edges of the first filter disc (3) and the second filter disc (4) are clamped in the annular clamping groove (21); and in the second state, only the peripheral edge of the first filter disc (3) is clamped in the annular clamping groove (21). Compared with the prior art, the funnel assembly is convenient to assemble, low in cost and high in universality.

Description

Technical Field

[0001] The invention relates to the technical field of beverage extraction, in particular to a funnel component for a coffee machine. Background Art

[0002] The metal funnel used in traditional coffee machines on the market is combined with a filter to extract coffee. After the coffee is extracted, it will pass through the bottom of the funnel to gather at the coffee spout and then flow into the coffee cup.

[0003] Existing filters are mainly composed of two types: the first type is composed of a porous filter cup alone, which can realize conventional coffee extraction. For details, please refer to the Chinese patent application number CN202320181413.9 "A funnel assembly for a coffee machine"; the second type is composed of a porous filter cup and a single-hole filter cup. By placing the porous filter cup inside the single-hole filter cup, double-layer filtration and pressurized extraction can be achieved. For details, please refer to the Chinese patent application number CN201920019218.X "A filter assembly for a coffee machine" and the Chinese patent application number CN202010705018.7 "Filter for a filter holder cup of a coffee machine".

[0004] However, for the second type of filter, its porous filter cup can only be used together with a single-hole filter cup, and cannot be used directly as the first type of filter alone. If you want to use the porous filter cup alone, you need to equip it with a porous filter cup that matches the funnel, which has poor versatility. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a funnel assembly for a coffee machine which is easy to assemble, low in cost and highly versatile in view of the current status of the prior art.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a funnel assembly for a coffee machine, characterized in that: it includes

[0007] The funnel body is hollow inside and has an open top;

[0008] A sealing ring is arranged in the funnel body, the peripheral portion of which is in sealing cooperation with the inner wall of the funnel body, and an annular groove is provided on the inner peripheral wall along the circumferential direction;

[0009] A first filter plate having a plurality of filter holes arranged at intervals, and a peripheral edge capable of being clamped in the annular clamping groove; and

[0010] The second filter has a distribution hole, and the peripheral edge can be clamped in the annular clamping groove;

[0011] The funnel assembly has at least two states:

[0012] In the first state, the first filter plate is stacked on top of the second filter plate, and the peripheral edges of both filter plates are clamped in the annular clamping groove;

[0013] In the second state, only the peripheral edge of the first filter is clamped in the annular clamping groove.

[0014] It should be emphasized that, in the second state, the first filter disc is used alone, and the second filter disc is not assembled onto the sealing ring as a component.

[0015] In order to prevent the two filter discs from sticking to each other and affecting the liquid output, the upper surface of the second filter disc has an upward convex bulge.

[0016] In order to ensure uniformity and stability of the gap between the two filter discs, the number of the convex hulls is at least two and they are arranged at intervals along the circumferential direction on the periphery of the distribution hole.

[0017] In order to facilitate the removal of the sealing ring and the deformation of the annular slot for the filter to be loaded and unloaded, the inner side of the sealing ring is provided with a gripping portion located above the annular slot for the user to hold.

[0018] In order to prevent the filter disc from being over-deformed and causing its peripheral edge to separate from the sealing ring, a supporting portion for supporting the first filter disc or the second filter disc is provided in the inner cavity of the funnel body.

[0019] In order to fully support the filter disc, a liquid outlet is provided at the middle position of the bottom of the funnel body, and the supporting part includes

[0020] A liquid receiving member connected to the inlet of the liquid outlet nozzle; and

[0021] The annular protrusion is convexly arranged on the bottom wall of the inner cavity of the funnel body and is arranged around the outer periphery of the liquid contacting part.

[0022] In order to match with the slightly deformed shallow disc filter, the top surface of the liquid contact piece is lower than the top surface of the annular protrusion.

[0023] In order to facilitate the positioning of the sealing ring in the funnel body, an annular groove is formed between the annular protrusion and the peripheral wall and bottom wall of the inner cavity of the funnel body, and the bottom of the sealing ring is inserted into the annular groove.

[0024] In order to achieve gas-liquid separation and prevent the coffee liquid discharged from the liquid outlet from being mixed with bubbles and affecting the taste, the liquid receiving member includes an outer cylinder connected to the edge of the liquid outlet inlet, an inner cylinder arranged in the outer cylinder, and a connecting plate connected between the outer cylinder and the inner cylinder. The connecting plates are at least two in number and are arranged at intervals along the circumferential direction to separate the space between the outer cylinder and the inner cylinder into at least one liquid outlet channel and at least one steam outlet channel.

[0025] The bottom end of the inner cylinder has an end wall, so that a liquid receiving groove with an upward opening is formed inside the inner cylinder, and the side of the inner cylinder has a notch connecting the liquid receiving groove and the liquid outlet channel;

[0026] In the first state, the opening at the top of the liquid receiving groove faces the distribution hole.

[0027] In order to provide a buffer space for the coffee liquid that cannot be discharged in time from the liquid outlet channel and to better separate the coffee liquid into gas and liquid, a buffer cavity is formed between the outer cylinder, the annular protrusion and the bottom wall of the inner cavity of the funnel body, and an opening is provided on the peripheral wall of the outer cylinder at a position corresponding to the liquid outlet channel so that the liquid outlet channel is connected to the buffer cavity.

[0028] Compared with the prior art, the advantages of the present invention are: the funnel assembly is composed of a funnel body, a sealing ring, a first filter disc and a second filter disc. First, during assembly, it is only necessary to insert the peripheral edge of the filter disc into the annular groove of the sealing ring, which is convenient for assembly, production and cleaning, with low cost and high reliability; second, the first filter screen and the second filter screen can be used together (suitable for application scenarios with high extraction pressure requirements), or the first filter screen can be used alone (suitable for application scenarios with low extraction pressure requirements), which is convenient for users to switch freely and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of a funnel assembly for a coffee machine of the present invention in a first state;

[0030] Figure 2 for Figure 1 Schematic diagram of the three-dimensional decomposition of

[0031] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure of the middle funnel body;

[0032] Figure 4 for Figure 1 Bottom view of the middle funnel body;

[0033] Figure 5 for Figure 1 A longitudinal cross-sectional view of

[0034] Figure 6 It is a longitudinal cross-sectional view of an embodiment of a funnel assembly for a coffee machine according to the present invention in a second state. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below with reference to the accompanying drawings.

[0036] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0037] like Figures 1 to 6 FIG. 1 is a preferred embodiment of a funnel assembly for a coffee machine according to the present invention. The funnel assembly comprises a funnel body 1 , a sealing ring 2 , a first filter 3 and a second filter 4 .

[0038] The funnel body 1 is hollow inside, with an open top and a liquid outlet 11 at the middle of the bottom. A liquid receiving part 12 is provided in the inner cavity of the funnel body 1, and the liquid receiving part 12 is connected to the entrance of the liquid outlet 11; an annular protrusion 13 is convexly provided on the bottom wall of the inner cavity of the funnel body 1, and the annular protrusion 13 is arranged around the outer periphery of the liquid receiving part 12;

[0039] Specifically, the liquid outlet nozzle 11 has three partitions 111 arranged at intervals along the circumferential direction inside, each partition 111 is arranged vertically, the inner edges of each partition 111 are connected, and the outer edges of each partition 111 are connected to the peripheral wall of the liquid outlet nozzle 11, so as to divide the inner cavity of the liquid outlet nozzle 11 into a liquid discharge channel 112 and two steam discharge channels 113;

[0040] The liquid receiving part 12 includes an outer cylinder 121 connected to the inlet edge of the liquid outlet nozzle 11, an inner cylinder 122 arranged in the outer cylinder 121, and a connecting plate 123 connected between the outer cylinder 121 and the inner cylinder 122; the connecting plates 123 are three in number and are arranged at intervals along the circumferential direction to separate the space between the outer cylinder 121 and the inner cylinder 122 into a liquid outlet channel 1211 and two steam outlet channels 1212, the outlet at the bottom of the liquid outlet channel 1211 is connected to the inlet at the top of the above-mentioned liquid discharge channel 112, and the outlet at the bottom of the steam outlet channel 1212 is connected to the inlet at the top of the above-mentioned steam discharge channel 113. The bottom end of the inner cylinder 122 has an end wall 1221, so that the inner cylinder 122 is formed with a liquid receiving groove 1222 with an opening facing upward, and the edges of the tops of the above-mentioned partitions 111 are connected to the end wall 1221; the side of the inner cylinder 122 has a notch 1223 connecting the liquid receiving groove 1222 and the liquid outlet channel 1211; the outer cylinder 121, the annular protrusion 13 and the bottom wall of the inner cavity of the funnel body 1 surround and form a buffer cavity 1213, and the outer cylinder 121 has an opening at a position corresponding to the liquid outlet channel 1211, so that the liquid outlet channel 1211 is connected to the buffer cavity 1213;

[0041] An annular groove 130 is formed between the annular protrusion 13 and the peripheral wall and bottom wall of the inner cavity of the funnel body 1 .

[0042] The sealing ring 2 is arranged in the funnel body 1, and the bottom is inserted in the annular groove 130. The outer peripheral wall of the sealing ring 2 is attached to the inner peripheral wall of the funnel body 1 and sealed. Specifically, an annular groove 21 is opened on the inner peripheral wall of the sealing ring 2 along the circumferential direction; the inner side of the sealing ring 2 is provided with a gripping portion 22 for the user to hold at a position above the annular groove 21. In this embodiment, the gripping portion 22 is a lug protruding inward from the sealing ring 2. The gripping portion 22 has two main functions: the first is to facilitate the user to take and place the sealing ring 2, and the second is to facilitate the deformation of the annular groove 21 for the following filter disc loading and unloading.

[0043] The first filter plate 3 is provided with a plurality of filter holes 31 arranged at intervals, and the peripheral edge of the first filter plate 3 can be clamped in the annular clamping groove 21 .

[0044] A distribution hole 41 is provided in the middle of the second filter disc 4, and its peripheral edge can be clamped in the above-mentioned annular clamping groove 21; the second filter disc 4 is partially pressed upward to form four upwardly convex bumps 42, and each bump 42 is arranged at intervals along the circumferential direction on the outer periphery of the distribution hole 41.

[0045] By selectively installing the first filter disc 3 and the second filter disc 4 on the sealing ring 2, the funnel assembly has at least two states:

[0046] In the first state, if Figure 5 As shown, the first filter disc 3 is stacked on the second filter disc 4, and the peripheral edges of the two are both clamped in the annular clamping groove 21, and the opening at the top of the liquid receiving groove 1222 is directly opposite to the distribution hole 41 of the second filter disc 4. At this time, due to the existence of the convex hump 42, it can be ensured that there is always a gap between the first filter disc 3 and the second filter disc 4 to avoid the mutual adhesion between the two to affect the liquid output (during extraction, under the pressure of hot water, the gap between the first filter disc 3 and the second filter disc 4 will increase);

[0047] In the second state, if Figure 6 As shown, only the peripheral edge of the first filter plate 3 is clamped in the annular clamping groove 21 .

[0048] It is worth noting that during the extraction process, the first filter disc 3 or the second filter disc 4 will be deformed under the action of water flow and present a shallow disc shape that gradually bulges downward from the outer periphery to the center, and the liquid receiving part 12 and the annular protrusion 13 inside the funnel body 1 can be used as a supporting part to support the first filter disc 3 or the second filter disc 4, thereby preventing the filter disc from being excessively deformed and causing its peripheral edge to detach from the sealing ring 2; in this embodiment, the top surface of the liquid receiving part 12 is lower than the top surface of the annular protrusion 13, and the top surface of the annular protrusion 13 gradually decreases from the outside to the inside, which can match the slightly deformed shallow disc-shaped filter disc.

[0049] The funnel assembly is mainly suitable for use in pressure coffee maker preparation equipment.

[0050] The working principle of this embodiment is as follows:

[0051] (1) When the extraction pressure requirement is high, the edges of the first filter disc 3 and the second filter disc 4 stacked up and down can be inserted into the annular groove 21 of the sealing ring 2 for assembly. Figure 5 As shown, in the first state, during extraction, hot water enters the first filter 3 and contacts the coffee powder to form coffee liquid. The coffee liquid first enters the gap between the first filter 3 and the second filter 4 through the filter hole 31 of the first filter 3, then flows out through the distribution hole 41 of the second filter 4 and converges into the liquid receiving groove 1222, then enters the liquid outlet channel 1211 and even the buffer chamber 1213 through the notch 1223, and finally flows out through the liquid discharge channel 112. At the same time, the water vapor carried by the coffee liquid will be discharged outward through the steam outlet channel 1211 and the steam exhaust channel 113 in turn. This gas-liquid separation design can prevent the coffee liquid discharged from the liquid outlet nozzle 11 from being mixed with bubbles and affecting the taste.

[0052] (2) When the extraction pressure requirement is low, only the peripheral edge of the first filter disc 3 can be inserted into the annular groove 21 of the sealing ring 2 for assembly. Figure 6 As shown, in the second state, during extraction, hot water enters the first filter 3 and contacts the coffee powder to form coffee liquid, and the coffee liquid passes through the filter hole 31 of the first filter 3 and enters the liquid receiving member 12 and the buffer chamber 1213, and finally flows out through the liquid outlet 11. It should be noted that when the extraction pressure is low, bubbles are less likely to form, so even if part of the coffee liquid is discharged outward through the steam outlet channel 1211 and the exhaust channel 113 in sequence, it has little effect on the taste of the final coffee liquid.

[0053] The funnel assembly of the present application has the following advantages:

[0054] First, it is easy to assemble, produce and clean, with low cost and high reliability;

[0055] Second, the first filter 3 and the second filter 4 can be used together (suitable for application scenarios with high extraction pressure requirements), or the first filter 3 can be used alone (suitable for application scenarios with low extraction pressure requirements), which is convenient for users to switch freely and has strong versatility.

Claims

1. A funnel assembly for a coffee machine, characterized in that: Included The funnel body (1) is hollow inside and has an open top; A sealing ring (2) is arranged in the funnel body (1), the circumference of which is in sealing cooperation with the inner wall of the funnel body (1), and an annular groove (21) is provided on the inner wall along the circumferential direction; The first filter plate (3) has a plurality of filter holes (31) arranged at intervals, and the peripheral edge of the first filter plate can be clamped in the annular clamping groove (21); as well as The second filter (4) has a distribution hole (41), and the peripheral edge can be clamped in the annular clamping groove (21); The funnel assembly has at least two states: In the first state, the first filter plate (3) is stacked on top of the second filter plate (4), and the peripheral edges of both are clamped in the annular clamping groove (21); In the second state, only the peripheral edge of the first filter plate (3) is clamped in the annular clamping groove (21).

2. The funnel assembly for a coffee machine according to claim 1, characterized in that: The upper surface of the second filter plate (4) has an upwardly convex bulge (42).

3. The funnel assembly for a coffee machine according to claim 2, characterized in that: The number of the convex bumps (42) is at least two, and they are arranged at intervals along the circumferential direction on the outer periphery of the distribution hole (41).

4. The funnel assembly for a coffee machine according to claim 1, characterized in that: The inner side of the sealing ring (2) is provided with a gripping portion (22) for a user to grip at a position above the annular clamping groove (21).

5. The funnel assembly for a coffee machine according to any one of claims 1 to 4, characterized in that: A supporting portion for supporting the first filter disc (3) or the second filter disc (4) is provided in the inner cavity of the funnel body (1).

6. The funnel assembly for a coffee machine according to claim 5, characterized in that: The funnel body (1) has a liquid outlet (11) at the middle position of the bottom, and the support portion includes A liquid receiving member (12) connected to the inlet of the liquid outlet nozzle (11); as well as An annular protrusion (13) is convexly arranged on the bottom wall of the inner cavity of the funnel body (1) and is arranged around the outer circumference of the liquid contacting part (12).

7. The funnel assembly for a coffee machine according to claim 6, characterized in that: The top surface of the liquid contact piece (12) is lower than the top surface of the annular protrusion (13).

8. The funnel assembly for a coffee machine according to claim 6, characterized in that: An annular groove (130) is formed between the annular protrusion (13) and the peripheral wall and bottom wall of the inner cavity of the funnel body (1), and the bottom of the sealing ring (2) is inserted into the annular groove (130).

9. The funnel assembly for a coffee machine according to claim 6, characterized in that: The liquid contacting member (12) comprises an outer cylinder (121) connected to the inlet edge of the liquid outlet nozzle (11), an inner cylinder (122) arranged in the outer cylinder (121), and a connecting plate (123) connected between the outer cylinder (121) and the inner cylinder (122); the connecting plates (123) are at least two in number and are arranged at intervals in the circumferential direction to separate the space between the outer cylinder (121) and the inner cylinder (122) into at least one liquid outlet channel (1211) and at least one steam outlet channel (1212); The bottom end of the inner cylinder (122) has an end wall (1221), so that a liquid receiving groove (1222) with an opening facing upward is formed inside the inner cylinder (122), and the side of the inner cylinder (122) has a notch (1223) connecting the liquid receiving groove (1222) and the liquid outlet channel (1211); In the first state, the opening at the top of the liquid receiving groove (1222) faces the distribution hole (41).

10. The funnel assembly for a coffee machine according to claim 9, characterized in that: A buffer chamber (1213) is formed between the outer tube (121), the annular protrusion (13) and the bottom wall of the inner cavity of the funnel body (1), and an opening is provided on the peripheral wall of the outer tube (121) at a position corresponding to the liquid outlet channel (1211) so that the liquid outlet channel (1211) is connected to the buffer chamber (1213).

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