Brewing head, coffee brewing device and coffee machine

Abstract

The utility model discloses a brewing head, a coffee brewing device and a coffee maker, the brewing head comprises a first funnel support, a second funnel support, a funnel cover and a sealing ring which are sequentially connected from top to bottom, the first funnel support and the funnel cover are made of plastic materials, and the second funnel support is made of metal materials; the first funnel bracket and the second funnel bracket are annular, and the first funnel bracket is inserted into the inner side of the second funnel bracket; a funnel cover is attached to the bottom of the second funnel support and comprises a water inlet pipe in the middle and an annular part on the edge, and the water inlet pipe upwards penetrates through the second funnel support; the annular part is arranged in a bottom groove of the second funnel support, an annular groove is formed in the bottom face of the annular part, and the sealing ring is arranged in the annular groove. The brewing head, the coffee brewing device and the coffee machine are high in strength, long in service life, good in heat insulation and low in funnel torsion.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, and more specifically to a brewing head, a coffee brewing device, and a coffee machine. Background Technology

[0002] Coffee machines typically brew coffee using a brewing mechanism. However, the brewing heads currently available on the market are mainly constructed from die-cast aluminum or all-plastic components. Die-cast aluminum structures tend to absorb and dissipate heat in the water channels, affecting temperature control and making it difficult to maintain stable water temperatures. Furthermore, the high friction between the die-cast aluminum and the funnel results in excessive funnel torque, making installation inconvenient. All-plastic structures are relatively weaker in strength. For example, Chinese patent CN216984535U discloses a sealing structure for a coffee machine, including a funnel holder, a filter, a funnel sealing ring, and a filter cup. The filter cup is detachably mounted on the funnel holder, with a brewing chamber between them. The funnel sealing ring is confined to the funnel holder by the filter and seals the brewing chamber from the outside. While this sealing structure effectively seals the brewing chamber and improves extraction, its one-piece plastic construction results in weak strength, susceptibility to deformation and cracking, and a short lifespan. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a brewing head, a coffee brewing device and a coffee machine, which has high strength, long service life, good heat insulation and low funnel torque.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a brewing head, comprising a first funnel support, a second funnel support, a funnel cover, and a sealing ring connected sequentially from top to bottom. The first funnel support and the funnel cover are made of plastic, and the second funnel support is made of metal. Both the first funnel support and the second funnel support are annular, and the first funnel support is inserted into the inner side of the second funnel support. The bottom of the second funnel support is fitted with the funnel cover, which includes a water inlet pipe in the middle and an annular part on the edge. The water inlet pipe passes upward through the second funnel support. The annular part is located in the bottom groove of the second funnel support, and the bottom surface of the annular part is provided with an annular groove. The sealing ring is located in the annular groove.

[0005] This technical solution provides a brewing head that uses a metal second funnel support as the main structure, combined with a plastic first funnel support and funnel cap, as well as a sealing ring, to form a sealed structure combining metal and plastic. The metal second funnel support serves as the main load-bearing component of the entire brewing head, with high material strength and load-bearing capacity, making the brewing head structurally stable and with a long service life. Furthermore, since the brewing water only comes into contact with the plastic funnel cap and not with the second funnel support, heat is not absorbed by the second funnel support, resulting in better heat insulation.

[0006] In a preferred embodiment, the first funnel support is annular and has multiple downwardly extending inner support plates along its circumference. The outer circumferential wall of the inner support plate fits against the annular inner circumferential wall of the second funnel support, and the bottom end of the inner support plate is bent inward to form a support portion. In this technology, the bottom of the first funnel support has an inwardly bent support portion, which is used to contact the high-pressure funnel of the coffee machine. That is, the high-pressure funnel only contacts the plastic, resulting in low friction and significantly reducing the operating torque when the entire high-pressure funnel is screwed in and out.

[0007] In a preferred embodiment, the funnel cover is further provided with a water pressure detection tube for connecting a pressure detection device. The bottom of the water pressure detection tube is connected to the bottom of the water inlet pipe through a water outlet. This technology, by including the water pressure detection tube, can detect the water pressure inside the brewing head, thus offering greater functionality.

[0008] In a preferred embodiment, the second funnel support is provided with several limiting through holes penetrating its upper and lower end faces, with the water inlet pipe and water pressure detection pipe respectively located within different limiting through holes. This technique, by placing the water inlet pipe and water pressure detection pipe within the limiting through holes on the second funnel support, prevents the funnel cover from shaking or shifting, resulting in a more secure installation.

[0009] In a preferred embodiment, a filter screen is located at the bottom of the sealing ring. This technology controls the water flow through the filter screen, resulting in more thorough and even extraction, which helps to improve the coffee's flavor.

[0010] In a preferred embodiment, the top of the first funnel support is provided with a plurality of first ears, and the top of the second funnel support is provided with a plurality of second ears; the first funnel support is fixedly connected to the second funnel support through the first ears and the second ears, so that the first funnel support and the second funnel support are firmly connected together, thus fully ensuring the structural stability of the brewing head.

[0011] In a preferred embodiment, the second funnel support is made of die-cast aluminum, which provides high structural strength; the sealing ring is made of silicone, which provides good sealing performance.

[0012] A coffee brewing device includes a high-pressure funnel and a filter cup, the filter cup being disposed in the upper part of the inner cavity of the high-pressure funnel. It also includes a brewing head as described in any of the above-described technical solutions, with the high-pressure funnel and the brewing head being detachably connected. The coffee brewing device of this technology, employing the aforementioned brewing head, can extend its service life and ensure effective heat insulation.

[0013] In a preferred embodiment, the upper part of the outer peripheral wall of the high-pressure funnel is provided with multiple mounting ears along the circumferential direction. The lower surface of the mounting ears contacts the upper surface of the support, that is, the high-pressure funnel only contacts the plastic, resulting in low friction and reducing the operating torque when the entire high-pressure funnel is screwed in and out.

[0014] A coffee machine includes a coffee brewing device as described in any of the above technical solutions.

[0015] The coffee machine in this technology uses the aforementioned coffee brewing device, which can extend the service life of the brewing head and ensure the heat insulation effect during the brewing process, thereby improving the taste of the coffee.

[0016] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of this utility model are as follows: The brewing head provided by this utility model adopts a metal second funnel support as the main structure, combined with a plastic first funnel support and funnel cover, as well as a sealing ring, to form a sealed structure combining metal and plastic. Among them, the metal second funnel support, as the main load-bearing component of the entire brewing head, has high material strength and can bear a large load, making the brewing head structure stable and with a long service life. Furthermore, since the brewing water only comes into contact with the plastic funnel cover and not with the second funnel support, heat is not absorbed by the second funnel support, resulting in better heat insulation. In addition, the high-pressure funnel only comes into contact with the plastic first funnel support, resulting in low friction and significantly reducing the operating torque when the entire funnel is screwed in and out, thereby achieving the functions of a brewing head with high strength, long service life, high heat insulation performance, and low assembly torque. In addition, a pressure device can be connected, making it more functional.

[0017] In addition, other advantages of this invention will be set forth in the description which follows, in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is an exploded structural diagram of the brewing head of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the coffee brewing device of this utility model;

[0021] Explanation of reference numerals in the attached drawings: 1. First funnel support; 10. First ear; 11. Support; 2. Second funnel support; 20. Second ear; 3. Funnel cover; 31. Water inlet pipe; 32. Water pressure detection pipe; 33. Water outlet; 4. Sealing ring; 5. Filter screen; 6. High-pressure funnel; 61. Mounting ear; 7. Filter cup. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] Reference Figure 1-2 This invention describes a brewing head, a coffee brewing device, and a coffee machine according to embodiments of the present invention, wherein the brewing head and the coffee brewing device can be used in a pressure coffee machine.

[0025] In one embodiment, such as Figure 1-2 As shown, a brewing head includes a first funnel support 1, a second funnel support 2, a funnel cover 3, and a sealing ring 4 connected sequentially from top to bottom. The first funnel support 1 and the funnel cover 3 are made of plastic, while the second funnel support 2 is made of metal.

[0026] The first funnel support 1 and the second funnel support 2 are both annular, and the first funnel support 1 is inserted inside the second funnel support 2.

[0027] The bottom of the second funnel support 2 is fitted with a funnel cover 3. The funnel cover 3 includes a water inlet pipe 31 in the middle and an annular part on the edge. The water inlet pipe 31 passes upward through the second funnel support 2. The annular part is located in the bottom groove of the second funnel support 2. The bottom surface of the annular part is provided with an annular groove, and the sealing ring 4 is located in the annular groove.

[0028] The first funnel support 1, the second funnel support 2, the funnel cover 3 and the sealing ring 4 are all integral structures. The metal materials include, but are not limited to, stainless steel, aluminum and other materials. The sealing ring 4 is made of silicone. The water inlet pipe 31 is used to connect to the water supply circuit of the coffee machine to access the brewing water. The top of the water inlet pipe 31 is flush with or higher than the upper surface of the second funnel support 2.

[0029] In practice, water from the coffee machine's water system enters the brewing head through the inlet pipe 31, with the water flow direction as follows: Figure 2 As indicated by the middle arrow. First, since the water inlet pipe 31 is part of the funnel cover 3, the water only comes into contact with the plastic funnel cover 3 and not with the metal second funnel support 2. Heat is not absorbed by the second funnel support 2, effectively providing insulation. Second, the funnel cover 3 is installed in the bottom groove of the integrated second funnel support 2 and fits snugly against the bottom of the second funnel support 2. This means the second funnel support 2 is the main load-bearing component of the entire brewing head. The high strength and load-bearing capacity of the metal material ensures the stability of the brewing head structure and a long service life. Furthermore, the sealing ring 4 is installed in the annular groove of the funnel cover 3, forming a surrounding structure. This prevents the silicone sealing ring 4 from deforming or shifting, allowing for a secure seal with only a small amount of seal between it and the filter cup 7.

[0030] The above embodiment provides a brewing head that uses a metal second funnel support as its main body structure, but the funnel cover made of plastic comes into contact with water, thus ensuring both structural strength and water temperature.

[0031] In this embodiment, the first funnel support 1 is annular and has multiple downwardly extending inner support plates along the circumference. The outer peripheral wall of the inner support plate is in contact with the annular inner peripheral wall of the second funnel support 2, and the bottom end of the inner support plate is bent inward to form a support portion 11.

[0032] The support part 11 is used to contact the high-pressure funnel 6. In specific implementation, the lower surface of the mounting ear 61 of the high-pressure funnel 6 contacts the upper surface of the support part 11 of the first funnel bracket 1, that is, the high-pressure funnel 6 only contacts the plastic, and the friction is small. Therefore, the torque of the entire high-pressure funnel can be greatly reduced when it is screwed in and out. The above-mentioned brewing head can also achieve very small operating torque while ensuring high strength and long service life.

[0033] In this embodiment, the funnel cover 3 is also provided with a water pressure detection pipe 32 for connecting the pressure detection device. The bottom of the water pressure detection pipe 32 is connected to the bottom of the water inlet pipe 31 through the water outlet 33.

[0034] The water pressure detection tube 32 is also part of the plastic funnel cover 3. In specific implementation, the water pressure detection tube 32 can be connected to a pressure display device to realize the pressure reading function. When the pressure display function is not needed, the water inlet 33 can be sealed. When the water inlet 33 is opened, the outlet of the water pressure detection tube 32 is connected to the water path of the brewing head, that is, connected to the water inlet pipe 31.

[0035] In this embodiment, the second funnel support 2 is provided with several limiting through holes penetrating its upper and lower end faces, and the water inlet pipe 31 and the water pressure detection pipe 32 are respectively located in different limiting through holes.

[0036] The number of limiting through holes can be two, which are used for the water inlet pipe 31 and the water pressure detection pipe 32 to pass through respectively. In specific implementation, the top outlet of the water inlet pipe 31 and the water pressure detection pipe 32 can be flush with or higher than the upper end surface of the second funnel support 2. A certain gap can be maintained between the water inlet pipe 31 and the water pressure detection pipe 32 and the limiting through holes they are located, so as to facilitate installation, or they can be tightly fitted.

[0037] In this embodiment, a filter screen 5 is provided at the bottom of the sealing ring 4.

[0038] The center of the filter screen 5 can be connected to the funnel cover 3 by a screw structure.

[0039] In practice, filter 5 acts as a secondary water distribution screen, ensuring that hot water is evenly distributed on the coffee grounds, allowing the coffee grounds to be fully soaked, improving the uniformity of extraction and the consistency of the coffee's flavor. At the same time, it can also regulate the speed at which the water flows through the coffee grounds, helping to control the extraction time and avoiding under-extraction caused by too fast a flow or over-extraction caused by too slow a flow, thus maintaining the best flavor of the coffee. In addition, filter 5 can prevent coffee grounds from directly contacting the brewing head, making the brewing head easier to clean.

[0040] In this embodiment, the top of the first funnel support 1 is provided with a plurality of first ears 10, and the top of the second funnel support 2 is provided with a plurality of second ears 20; the first funnel support 1 is fixedly connected to the second funnel support 2 through the first ears 10 and the second ears 20.

[0041] In practice, the number and position of the first ear 10 and the second ear 20 correspond one-to-one to securely connect the first funnel support 1 and the second funnel support 2 together.

[0042] In this embodiment, the second funnel support 2 is made of die-cast aluminum, which has high structural strength; the sealing ring 4 is made of silicone, which has good sealing performance.

[0043] In another embodiment, such as Figure 2 As shown, this utility model provides a coffee brewing device, including a high-pressure funnel 6 and a filter cup 7. The filter cup 7 is disposed in the upper part of the inner cavity of the high-pressure funnel 6, and also includes a brewing head as in any of the above embodiments. The high-pressure funnel 6 and the brewing head are detachably connected.

[0044] In specific implementation, the outer surface of the sealing ring 4 is a stepped surface, which includes an upper contact surface and a lower contact surface. The upper contact surface is in sealing contact with the upper end face of the filter cup 7, and the lower contact surface is in sealing contact with the inner peripheral wall of the filter screen 5.

[0045] This embodiment provides a coffee brewing device. Using the brewing head in the above embodiment can improve service life and ensure heat insulation effect.

[0046] In this embodiment, the upper part of the outer peripheral wall of the high pressure funnel 6 is provided with a plurality of mounting ears 61 along the circumferential direction. The lower surface of the mounting ears 61 contacts the upper surface of the support part 11, that is, the high pressure funnel only contacts the plastic, resulting in low friction and reducing the operating torque when the entire high pressure funnel is screwed in and out.

[0047] In another embodiment, the present invention provides a coffee machine that includes a coffee brewing device as described in any of the above embodiments, which can improve service life and ensure heat insulation effect.

[0048] The brewing head, coffee brewing device, and other components and operations of the coffee machine according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0049] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0050] In the description of this specification, references to the terms "embodiment," "specific embodiment," "example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention.

[0051] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined with each other in any suitable manner in one or more embodiments or examples without interference or contradiction.

Claims

1. A brew head, characterized by: Including first funnel support (1), second funnel support (2), funnel cover (3) and sealing ring (4) connected in turn from top to bottom, the first funnel support (1) and the funnel cover (3) are plastic material, the second funnel support (2) is metal material; The first funnel support (1) and the second funnel support (2) are annular, and the first funnel support (1) is inserted in the inside of the second funnel support (2); The bottom of the second funnel support (2) is attached with the funnel cover (3), the funnel cover (3) includes a water inlet pipe (31) in the middle and an annular part at the edge, the water inlet pipe (31) passes through the second funnel support (2) upward, the annular part is arranged in the bottom groove of the second funnel support (2), the bottom surface of the annular part is provided with an annular groove, and the sealing ring (4) is arranged in the annular groove.

2. The brewing head of claim 1, characterized in that: The first funnel support (1) is annular and is provided with a plurality of downward extending inner support plates along the circumference, the outer peripheral wall of the inner support plate is attached with the annular inner peripheral wall of the second funnel support (2), and the bottom end of the inner support plate is inwardly bent to form a support part (11).

3. The brewing head according to claim 2, characterized in that: The funnel cover (3) is further provided with a water pressure detection pipe (32) for connecting a pressure detection device, and the bottom of the water pressure detection pipe (32) is communicated with the bottom of the water inlet pipe (31) through a water inlet (33).

4. The brewing head according to claim 3, characterized in that: The second funnel support (2) is provided with a plurality of limiting through holes penetrating through the upper and lower end faces thereof, and the water inlet pipe (31) and the water pressure detection pipe (32) are arranged in different limiting through holes.

5. The brew head of claim 1, wherein: The bottom of the sealing ring (4) is provided with a filter screen (5).

6. The brew head of claim 1, wherein: The top of the first funnel support (1) is provided with a plurality of first ear parts (10), and the top of the second funnel support (2) is provided with a plurality of second ear parts (20). The first funnel support (1) is fixedly connected with the second funnel support (2) through the first ear parts (10) and the second ear parts (20).

7. The brewing head according to any one of claims 1 to 6, characterized in that: The second funnel support (2) is made of aluminum material by pressure casting, and the sealing ring (4) is made of silica gel material.

8. A coffee brewing device comprising a high pressure funnel (6) and a filter cup (7) arranged on an upper portion of an inner cavity of the high pressure funnel (6), characterized in that: The high-pressure funnel (6) is detachably connected with the brewing head.

9. The coffee brewing device of claim 8, wherein: A plurality of mounting ears (61) are arranged on the upper portion of the outer peripheral wall of the high-pressure funnel (6) along the circumference, and the lower surface of the mounting ear (61) is in contact with the upper surface of the support part (11).

10. A coffee maker characterized in that: The coffee brewing device comprises the brewing head according to any one of claims 1-7. The coffee brewing device comprises the brewing head according to any one of claims 1-7.

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