Brewing head assembly and coffee machine

Abstract

The utility model discloses a brewing head assembly and a coffee maker, the brewing head assembly comprises a brewing head and a flow guide assembly, and the brewing head is provided with a mounting channel and a mounting surface; the flow guide assembly comprises a first flow guide part and a second flow guide part, the first flow guide part is arranged in the mounting channel, a flow guide channel is formed in the first flow guide part, and a flow guide section is arranged at the bottom end of the first flow guide part and extends out of the mounting channel; the second flow guide part surrounds the flow guide section, shields the mounting surface and is used for guiding the water flow guided out by the flow guide section to deviate from the mounting surface. The coffee machine comprises the brewing head assembly. The flow guide assembly is arranged to guide water flow to flow along a specific path, direct contact between the water flow and the brewing head is avoided, and the brewing head is prevented from being corroded and generating incrustation.

Description

TECHNICAL FIELD

[0001] The utility model relates to coffee machine technical field especially, it is a kind of brewing head subassembly and coffee machine. BACKGROUND

[0002] At present, die-casting aluminum part is widely applied in the manufacture of coffee brewing head due to its good thermal conductivity, formability and relatively low cost. However, water will directly contact with die-casting aluminum part in the process of brewing coffee; as water usually contains various minerals and ions, die-casting aluminum part will be corroded in long-term use, and scale is easy to form on the inner wall and flow channel of brewing head, which will block flow channel after gradual accumulation, eventually leading to uneven coffee extraction and affecting the taste consistency of coffee.

[0003] In order to solve the above problems of die-casting aluminum brewing head, stainless steel material is introduced into the manufacture of coffee brewing head. Stainless steel has excellent corrosion resistance, which can effectively resist the erosion of water and chemical components in coffee liquid, and its surface is not easy to form scale. However, the cost of stainless steel material is relatively high, which makes the price of coffee machine with stainless steel brewing head generally high in the market, limiting its popularization and application in some price-sensitive consumer groups and market segments. SUMMARY

[0004] In order to overcome at least one of the defects of the prior art described above, the utility model provides a kind of brewing head subassembly and coffee machine, which guides water flow along a specific path by setting flow guide assembly, avoids the direct contact of water flow with brewing head, and prevents brewing head from being corroded and scale from being generated.

[0005] The technical scheme adopted by the utility model to solve the problems is:

[0006] A kind of brewing head subassembly, comprising,

[0007] Brewing head, the brewing head is equipped with installation channel and installation face;

[0008] Flow guide assembly, including first flow guide piece and second flow guide piece, the first flow guide piece is set in the installation channel, the inside of the first flow guide piece is equipped with flow guide channel, the bottom end of the first flow guide piece is equipped with flow guide section, the flow guide section is stretched out from the installation channel;The second flow guide piece is surrounded in the flow guide section and shields the installation face, and is used to guide the water flow discharged by the flow guide section away from the installation face.

[0009] Further, the flow guide section is equipped with liquid outlet, the top end of the first flow guide piece is equipped with liquid inlet, the liquid inlet and the liquid outlet are all communicated with the flow guide channel, and the flow guide channel is used to guide water flow from the liquid inlet to the liquid outlet.

[0010] Further, the second flow guide member comprises a recessed platform, the recessed platform has a bottom wall and an annular side wall, a bottom end of the annular side wall is connected to a circumferential edge of the bottom wall, and an upper end of the annular side wall extends outward to form an abutting portion;

[0011] The bottom of the brewing head is provided with a convex platform, an outer periphery of the convex platform is provided with a mounting groove, and a mounting surface is formed on surfaces of the convex platform and the mounting groove; the convex platform is embedded in the recessed platform, and the abutting portion is embedded in the mounting groove, so that the second flow guide member covers the mounting surface.

[0012] Further, the bottom wall is provided with a through hole, the flow guide section passes through the through hole, and a connection portion of the flow guide section and the through hole is provided with a seal.

[0013] Further, the abutting portion comprises a first abutting section and a second abutting section, the first abutting section is formed by extending outward from the upper end of the annular side wall, and the second abutting section is formed by extending downward from an end portion of the first abutting section; the first abutting section abuts against an end wall of the mounting groove, and the second abutting section abuts against a side wall of the mounting groove.

[0014] Further, the brewing head assembly comprises a funnel, the funnel is arranged at the bottom of the brewing head, and the second flow guide member is arranged between the funnel and the brewing head; the second abutting section and the annular side wall are spaced apart to form a mounting space, a sealing member is arranged in the mounting space, and the sealing member is used for sealing a connection portion of the second flow guide member and the funnel.

[0015] Further, the material of the brewing head is different from the materials of the first flow guide member and the second flow guide member.

[0016] Further, a funnel support is arranged, two ends of the funnel support are respectively provided with a first connecting portion and a second connecting portion, an outer periphery of the brewing head is provided with a third connecting portion, the third connecting portion is connected to the first connecting portion, and an outer periphery of the funnel is provided with a fourth connecting portion, and the fourth connecting portion is connected to the second connecting portion.

[0017] Further, a first limiting portion is arranged in the mounting channel, an outer periphery of the first flow guide member is provided with a second limiting portion, and the first limiting portion and the second limiting portion are limited and matched.

[0018] A coffee machine comprises the brewing head assembly as described above.

[0019] In conclusion, the brewing head assembly and the coffee machine have the following technical effects:

[0020] 1) The utility model discloses a first flow guide piece is set to guide the flow of water along the specific path, avoids the direct contact of water flow and the flow passage of brewing head, and simultaneously, the second flow guide piece is set to shield the mounting surface of brewing head and guide the water flow of flow guide section to deviate from the mounting surface, can avoid the water flow of flow guide section to contact the bottom of brewing head, thereby all setting flow guide piece in the place that brewing head can contact water flow, to prevent the direct contact of water flow and brewing head, prevents the corrosion and scale of brewing head.

[0021] 2) The utility model discloses a brewing head and flow guide piece will not be corroded and scale in use, can ensure the stability of water flow pressure and speed when coffee brewing, makes coffee powder can be fully extracted under suitable time and pressure, guarantees the consistency of coffee taste and quality, and the water is prevented from contacting brewing head in the process of brewing coffee, and is more healthy and environmental protection. DRAWINGS

[0022] Figure 1 It is the structure schematic drawing of brewing head subassembly of the utility model embodiment;

[0023] Figure 2 It is the explosion drawing of brewing head subassembly of the utility model embodiment;

[0024] Figure 3 It is the plan view of brewing head subassembly of the utility model embodiment;

[0025] Figure 4 It is Figure 3 The section view of A-A;

[0026] Figure 5 It is the structure schematic drawing of second flow guide piece of the utility model embodiment;

[0027] Figure 6 It is the bottom schematic drawing when brewing head and flow guide assembly of the utility model embodiment are assembled;

[0028] Figure 7 It is Figure 6 The explosion drawing;

[0029] Figure 8 It is Figure 4 The structure schematic drawing in another visual angle;

[0030] Figure 9 It is the structure schematic drawing of funnel of the utility model embodiment.

[0031] Among them, the meaning of the reference sign is as follows:

[0032] 10, brewing head; 100, boss; 101, mounting groove; 20, funnel; 21, brewing cavity; 30, first flow guide; 31, second flow guide; 310, bottom wall; 311, annular side wall; 312, abutting portion; 313, through hole; 314, first abutting section; 315, second abutting section; 316, mounting interval; 33, flow guide channel; 34, liquid outlet; 35, liquid inlet; 36, second limiting portion; 37, sealing member; 40, funnel support; 41, first connecting portion; 42, second connecting portion; 421, connecting clamping groove; 43, third connecting portion; 44, fourth connecting portion; 50, liquid outlet nozzle; 51, liquid outlet channel. DETAILED DESCRIPTION

[0033] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0034] In the description of the present application, it should be pointed out that the directions or position relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application in that the indicated devices or elements must have a specific direction, be constructed and operated in a specific direction.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0036] Embodiment one

[0037] Referring to Figure 1 and Figure 2 , the present application discloses a brewing head 10 assembly, which comprises a brewing head 10 and a flow guide assembly. Specifically, the brewing head 10 is provided with a mounting channel and a mounting surface, and the flow guide assembly comprises a first flow guide 30 and a second flow guide 31. Referring to Figure 4 , the first flow guide 30 is arranged in the mounting channel, and the inside of the first flow guide 30 is provided with a flow guide channel 33. In addition, the bottom end of the first flow guide 30 is provided with a flow guide section, and the flow guide section protrudes out of the mounting channel. Referring to Figure 6 , the second flow guide 31 is arranged around the flow guide section and shields the mounting surface, and is used for guiding the water flow discharged by the flow guide section to deviate from the mounting surface.

[0038] On the basis of the structure, when the brewing head 10 assembly of the utility model is used, the coffee machine starts to work, and the water flow enters the brewing head 10 assembly. Specifically, the water flow first enters the flow guide channel 33 inside the first flow guide piece 30. Then the water flow reaches the flow guide section at the bottom end of the first flow guide piece 30 along the flow guide channel 33, and since the flow guide section protrudes from the mounting channel of the brewing head 10, the water flow can be guided from the inside of the brewing head 10 to the outside of the brewing head 10. At this time, the second flow guide piece 31 surrounding the outside of the flow guide section starts to play a role, which blocks the mounting surface at the bottom end of the brewing head 10, so that the water flow at the bottom of the brewing head 10 does not directly contact the mounting surface; at the same time, the second flow guide piece 31 also guides the water flow guided by the flow guide section to the direction away from the mounting surface, on the one hand, the flow guide section protrudes from the mounting channel of the brewing head 10, and the water flow flows to the outside of the brewing head 10 along the flow guide section, and on the other hand, the second flow guide piece 31 blocks the mounting surface, and the water flow flows to the side of the second flow guide piece 31 away from the mounting surface, and flows downward to the direction away from the mounting surface under the action of gravity.

[0039] Therefore, the utility model limits the water flow in the flow guide channel 33 inside the first flow guide piece 30, so that the water flow flows in the inside of the brewing head 10 while avoiding direct contact with the inner wall of the mounting channel. Moreover, the utility model blocks the mounting surface by the second flow guide piece 31 to avoid direct contact between the water flow guided by the flow guide section and the bottom end of the brewing head 10. At the same time, the second flow guide piece 31 guides the water flow away from the mounting surface, so that the water flow quickly flows to the brewing area.

[0040] It should be noted that calcium and magnesium ions in water are easy to form scale when they are in contact with the metal surface for a long time and the temperature changes; therefore, the utility model completely sets flow guide pieces at the places where the brewing head 10 may contact the water flow to isolate the water flow, which can prevent the water flow from directly contacting the brewing head 10, thereby preventing the minerals and impurities in the water flow from corroding and scaling the mounting channel or the bottom mounting surface of the brewing head 10, and prolonging the service life of the brewing head 10. In addition, the water is blocked by the flow guide assembly and does not contact the brewing head 10, especially when the brewing head 10 is made of materials or coatings that are not easy to directly contact, such as die-cast aluminum or polytetrafluoroethylene coating, the coffee liquid brewed by the brewing head assembly of the embodiment is more healthy and environmentally friendly.

[0041] Further, the flow guide section is provided with a liquid outlet 34, referring to Figure 3 The top end of the first flow guide piece 30 is provided with a liquid inlet 35, and the liquid inlet 35 and the liquid outlet 34 are both in communication with the flow guide channel 33. Among them, the flow guide channel 33 is used to guide the water flow from the liquid inlet 35 to the liquid outlet 34.

[0042] Specifically, the first flow guide 30 is a flow guide pipe, which is shaped to match the shape of the installation channel. In use, water flows directly into the flow guide channel 33 from the liquid inlet 35, so as to avoid direct contact between the water flow and the portion of the brewing head 10 outside the periphery of the liquid inlet 35.

[0043] Thus, by connecting the liquid inlet 35 and the liquid outlet 34 through the flow guide channel 33, the water flow can be ensured to flow along a predetermined path, thereby providing a stable and uniform water flow for coffee brewing. Moreover, the water flow flows through the internal flow passage of the brewing head 10 without directly contacting the brewing head 10, so as to avoid corrosion of the brewing head 10 by the water flow.

[0044] Further, referring to Figure 5 , the second flow guide 31 comprises a recessed platform, specifically, the recessed platform has a bottom wall 310 and an annular side wall 311, and the bottom end of the annular side wall 311 is connected to the periphery of the bottom wall 310. The upper end of the annular side wall 311 extends outward to form an abutting portion 312.

[0045] Referring to Figure 7 , the bottom of the brewing head 10 is provided with a boss 100, and the periphery of the boss 100 is provided with an installation groove 101. It should be noted that the installation surface is formed on the surface of the boss 100 and the installation groove 101. The boss 100 is embedded in the recessed platform, and the abutting portion 312 is embedded in the installation groove 101, so that the second flow guide 31 covers the installation surface.

[0046] On the basis of this structure, when assembling the brewing head 10 component, the boss 100 at the bottom of the brewing head 10 is aligned with the position of the recessed platform of the second flow guide 31, and then the boss 100 is moved downward along the annular side wall 311 of the recessed platform until the bottom surface of the boss 100 abuts against the bottom wall 310 of the recessed platform. At the same time, as the boss 100 is continuously embedded in the recessed platform, the abutting portion 312 at the upper end of the annular side wall 311 gradually approaches the installation groove 101 at the periphery of the boss 100. When the boss 100 is completely embedded in the recessed platform, the abutting portion 312 is completely embedded in the installation groove 101.

[0047] Thus, by embedding the boss 100 and the recessed platform, and the abutting portion 312 and the installation groove 101, the second flow guide 31 can be firmly installed at the bottom of the brewing head 10 while covering the installation surface of the brewing head 10. Therefore, when the coffee machine starts brewing coffee, hot water enters from the liquid inlet 35 of the first flow guide 30, and flows out from the liquid outlet 34 of the flow guide section after passing through the flow guide channel 33. At this time, since the second flow guide 31 has covered the installation surface by the above-mentioned embedding method, even if the water flow flows out from the flow guide section or some splashing, backflow, etc. occurs during the brewing process, it is difficult for the water flow to directly contact the installation surface.

[0048] That is, the mounting surface is covered by the second flow guide 31, and the second flow guide 31 is arranged around the outer periphery of the flow guide section, so that when the water flow is guided out of the liquid outlet 34, it directly reaches the bottom of the second flow guide 31 and does not contact the mounting surface of the brewing head 10, thereby protecting the mounting surface from hot water erosion.

[0049] Further, referring to Figure 5 and Figure 6 the bottom wall 310 is provided with a through hole 313, and the flow guide section passes through the through hole 313, and the connection between the flow guide section and the through hole 313 is sealed.

[0050] On the basis of this structure, when assembling the brewing head 10 assembly, after the second flow guide 31 is assembled with the brewing head 10, the boss 100 is embedded in the recess, and the abutting portion 312 is embedded in the mounting groove 101, the flow guide section of the first flow guide 30 needs to pass through the through hole 313 of the bottom wall 310 of the second flow guide 31. Then, after the flow guide section passes through the through hole 313, the connection between the flow guide section and the through hole 313 needs to be sealed. Specifically, a sealing material (such as a rubber sealing ring) can be installed at the gap between the flow guide section and the through hole 313, to ensure that the sealing material can tightly fill the gap and achieve good sealing effect.

[0051] Since the connection between the flow guide section and the through hole 313 is sealed, when the water flow flows out through the flow guide section, it will not enter the upper end surface of the bottom wall 310 from the connection between the flow guide section and the through hole 313, that is, the water flow will not reach the mounting surface side.

[0052] It should be noted that the first flow guide 30 and the second flow guide 31 in the embodiment are assembled separately, and the connection between the flow guide section and the through hole 313 is sealed to avoid the water flow at the bottom of the brewing head 10 from entering the mounting surface from the connection between the first flow guide 30 and the second flow guide 31.

[0053] In addition, the first flow guide 30 and the second flow guide 31 can also be integrally formed, which can eliminate the gap at the connection between the first flow guide 30 and the second flow guide 31, and can be used without sealing. At the same time, under the action of external forces such as water flow impact and vibration during coffee machine operation, the flow guide assembly is not easy to loosen or shift between components, and can better maintain its shape and function, thereby ensuring the reliability of the entire brewing head 10 assembly during long-term use.

[0054] Further, referring to Figure 4 and Figure 5The abutting portion 312 comprises a first abutting section 314 and a second abutting section 315. Specifically, the first abutting section 314 is formed by extending outwardly from the upper end of the annular side wall 311, and the second abutting section 315 is formed by extending downwardly from the end of the first abutting section 314. The first abutting section 314 abuts against the end wall of the mounting groove 101, and the second abutting section 315 abuts against the side wall of the mounting groove 101.

[0055] On the basis of the above structure, when assembling the brewing head 10 assembly, first, the boss 100 at the bottom of the brewing head 10 is aligned with the recess of the second flow guide 31, and then the boss 100 is slowly embedded in the recess. As the boss 100 is gradually embedded in place, the first abutting section 314 gradually approaches the end wall of the mounting groove 101, and the second abutting section 315 enters the mounting groove 101 along the side wall of the mounting groove 101.

[0056] When the boss 100 is completely embedded in the recess, the first abutting section 314 tightly abuts against the end wall of the mounting groove 101, serving as a preliminary positioning and lateral limiting function, ensuring that the second flow guide 31 is in the correct position relative to the brewing head 10 in the horizontal direction. The second abutting section 315 tightly abuts against the side wall of the mounting groove 101, serving as a radial limiting function, thereby limiting the second flow guide 31 in two directions, improving the firmness of the installation.

[0057] Therefore, the structure of the second flow guide 31 can fully cover the outer surface of the boss 100 and the mounting groove 101, thereby covering the mounting surface. When water flow gathers at the bottom of the second flow guide 31, the water flow first contacts the second flow guide 31 and cannot contact the mounting surface.

[0058] In addition, the second flow guide 31 can also be in the shape of an umbrella, which surrounds the outer periphery of the flow guide section and shields the mounting surface. Specifically, the middle part of the second flow guide 31 is sealingly connected with the flow guide section, the peripheral edge of the second flow guide 31 is sealingly connected with the mounting groove 101, and the umbrella-shaped structure of the second flow guide 31 gradually inclines downward from the middle part to the peripheral edge, so that the bottom surface of the second flow guide 31 facing away from the mounting surface forms a flow guide surface, and the flow guide surface surrounds the outer periphery of the flow guide section. When the flow guide section sprays water flow in all directions, the water flow reaches the flow guide surface and is guided to flow downward to the brewing area of the funnel 20, avoiding flowing to the edge of the second flow guide 31, accumulating at the edge contact between the second flow guide 31 and the brewing head 10, and penetrating to the mounting surface of the brewing head 10.

[0059] Further, the brewing head 10 assembly comprises a funnel 20, which is arranged at the bottom of the brewing head 10, and the second flow guide 31 is arranged between the funnel 20 and the brewing head 10. Referring to Figure 4The second abutting section 315 is spaced apart from the annular sidewall 311 to form a mounting space 316, and a sealing member 37 is arranged in the mounting space 316. The sealing member 37 is arranged to seal the connection between the second flow guide 31 and the funnel 20.

[0060] In this structure, during assembly, the second flow guide 31 is first mounted at the bottom of the brewing head 10, and the sealing member 37 is arranged in the mounting space 316. When the user needs to brew coffee, the funnel 20 is mounted at the bottom of the brewing head 10. At this time, the second flow guide 31 is located between the funnel 20 and the brewing head 10, and the sealing member 37 is located at the connection between the second flow guide 31 and the funnel 20, thereby sealing the connection between the second flow guide 31 and the funnel 20.

[0061] Specifically, the connection between the second flow guide 31 and the funnel 20 is located at the upper end of the funnel 20, and the sealing member 37 can be a rubber ring. When the second flow guide 31 is connected to the funnel 20, the rubber ring can be compressed to seal the connection between the second flow guide 31 and the funnel 20. When the coffee machine is started to brew coffee, the water flow first enters the liquid inlet 35 of the first flow guide 30 and flows out from the liquid outlet 34 of the flow guide section. Due to the guiding effect of the second flow guide 31, the water flow flows towards the funnel 20 and enters the brewing chamber 21 in the funnel 20, thereby brewing the coffee powder in the brewing chamber 21. The extracted coffee liquid flows out from the liquid outlet 50 through the liquid outlet channel 51 at the bottom of the funnel 20.

[0062] During the extraction of coffee, the mounting surface of the brewing head 10 is tightly blocked by the second flow guide 31. Even if the liquid outlet channel 51 or the liquid outlet 50 is blocked, the coffee liquid cannot be discharged in time, and the liquid in the brewing chamber 21 of the funnel 20 cannot contact the brewing head 10 due to the blocking of the second flow guide 31. This effectively avoids the problems of corrosion and scaling that may be caused by direct contact between the water flow and the mounting surface of the brewing head 10, thereby protecting the brewing head 10 and prolonging its service life.

[0063] In addition, referring to Figure 8 and Figure 9 , the bottom of the funnel 20 is provided with a liquid outlet 50, and the liquid outlet 50 is provided with a liquid outlet channel 51 that communicates with the brewing chamber 21. Since the connection between the second flow guide 31 and the funnel 20 is sealed by a rubber ring, the rising water surface cannot overflow from the upper end of the funnel 20. Therefore, the water flow in the brewing chamber 21 can only follow the predetermined path, i.e., after passing through the bed of coffee powder, the coffee liquid is formed and discharged through the liquid outlet 50 at the bottom of the funnel 20. This ensures that the water flow can stably and properly contact the coffee powder to achieve uniform extraction of the coffee powder.

[0064] Further, the material of the brewing head 10 is different from that of the first flow guide 30 and the second flow guide 31.

[0065] Specifically, the brewing head 10 can be made of metal materials such as aluminum alloy through a die casting process, or made of plastic materials through injection molding. The first flow guide 30 and the second flow guide 31 can be made of stainless steel, ceramic or glass materials. Of course, the material of the first flow guide 30 and the material of the second flow guide 31 can also be different.

[0066] The brewing head 10 made of aluminum alloy or plastic material has low production cost and is easy to form, but has poor corrosion resistance of aluminum alloy and is prone to aging and deformation under high temperature of plastic material. Therefore, the flow guide assembly is made of stainless steel, ceramic or glass material with good corrosion resistance and high temperature resistance, and the brewing head 10 is isolated by the flow guide assembly to prevent the water flow from directly contacting the brewing head 10, thereby avoiding corrosion and aging of the brewing head 10. At the same time, the production cost is reduced.

[0067] Further, referring to Figure 2 and Figure 7 , the brewing head 10 assembly includes a funnel support 40. Specifically, the two ends of the funnel support 40 are respectively provided with a first connecting portion 41 and a second connecting portion 42. Correspondingly, the outer periphery of the brewing head 10 is provided with a third connecting portion 43, and the third connecting portion 43 is connected with the first connecting portion 41. Referring to Figure 9 , the outer periphery of the funnel 20 is provided with a fourth connecting portion 44, and the fourth connecting portion 44 is connected with the second connecting portion 42.

[0068] On this basis, the first connecting portion 41 includes a connecting disc provided with a connecting hole. The third connecting portion 43 includes a connecting block also provided with a connecting hole. When connected, the connecting block is abutted on the connecting disc, and the connecting holes of the two are connected by screws, bolts or other fasteners, so that the funnel support 40 and the brewing head 10 are fixedly connected.

[0069] In addition, referring to Figure 7 , the second connecting portion 42 includes a connecting ring arranged on the inner periphery of the bottom of the funnel support 40, and the connecting ring is provided with a connecting clamping groove 421. The fourth connecting portion 44 includes a connecting protrusion arranged on the outer periphery of the upper end of the funnel 20. The connecting protrusion is used for inserting with the connecting clamping groove 421, referring to Figure 8 , the connecting protrusion is used for abutting with the connecting ring after the funnel 20 rotates relative to the funnel support 40.

[0070] Thus, the second connecting portion 42 is detachably connected with the fourth connecting portion 44, and after the second connecting portion 42 is connected with the fourth connecting portion 44, the funnel 20 is abutted on the connecting ring of the funnel support 40 through the connecting protrusion, so that the funnel 20 can be close to and attached to the bottom of the brewing head 10, and further, the sealing member 37 in the installation interval 316 is pressed and held through the abutting action, so as to seal the connection between the second flow guide 31 and the funnel 20.

[0071] That is, in each use, only the funnel 20 and the funnel support 40 are installed in place, and the sealing of the connection between the funnel 20 and the second flow guide 31 can be ensured, so as to ensure that the water flow in the brewing cavity 21 does not overflow from the upper end of the funnel 20 during the brewing process.

[0072] Further, referring to Figure 4 , the first limiting portion is provided in the installation channel, referring to Figure 7 , the outer periphery of the first flow guide 30 is provided with a second limiting portion 36, wherein the first limiting portion and the second limiting portion 36 are limitedly matched.

[0073] Specifically, the first limiting portion is a limiting protrusion, and the second limiting portion 36 is a limiting groove, when the first flow guide 30 is installed in the installation channel, the limiting groove on the first flow guide 30 and the limiting protrusion of the installation channel are mutually embedded, so as to limit the first flow guide 30 in the installation channel.

[0074] It should be noted that the flow guide section of the first flow guide 30 needs to extend out of the installation channel by a certain length, and cooperates with the second flow guide 31 and other components to ensure that the water flow follows the predetermined path. Thus, the first limiting portion and the second limiting portion 36 are limitedly connected to realize the accurate positioning of the first flow guide 30 in the installation channel, so that it is in the accurate axial position in the installation channel.

[0075] In addition, when brewing coffee, the water flow in the flow guide channel 33 will generate a certain impact force, and by limitingly connecting the first flow guide 30 with the installation channel, displacement of the first flow guide 30 due to various external forces during the operation of the coffee machine can be prevented.

[0076] In addition, the first limiting portion can also be an internal thread hole, and the second limiting portion 36 is an external thread structure, and by screwing the second limiting portion 36 with the first limiting portion, the first flow guide 30 is limited in the installation channel. And the first flow guide 30 and the installation channel are detachably connected, so that the first flow guide 30 can be regularly disassembled for maintenance or replacement, avoiding the replacement of the entire brewing head 10 and reducing the maintenance cost.

[0077] Embodiment Two

[0078] Different from the first embodiment, the present embodiment discloses a coffee machine comprising the brewing head 10 component in the first embodiment.

[0079] Specifically, in use, the water flows into the guide channel 33 of the first guide member 30 through the water inlet 35, and the guide channel 33 is located in the brewing head 10 but is separated from the brewing head 10; then the water in the guide channel 33 is guided out through the guide section at the bottom end of the first guide member 30 and flows away from the mounting surface of the bottom of the brewing head 10 under the guidance of the second guide member 31.

[0080] In the present embodiment, since the second guide member 31 is arranged around the outer periphery of the guide section and shields the mounting surface of the bottom end of the brewing head 10, the water flow will not splash onto the mounting surface when the water flow is guided out through the guide section; when the water surface at the bottom of the brewing head 10 rises close to the brewing head 10, the water flow will only contact the second guide member 31.

[0081] That is, in the present embodiment, the first guide member 30 and the second guide member 31 are arranged at the positions of the water flow that can contact the brewing head 10, respectively, and the water flow is guided by the first guide member 30 and the second guide member 31, so that the direct contact between the brewing head 10 and the water flow is avoided.

[0082] The technical means disclosed in the present utility model scheme is not limited to the technical means disclosed in the above embodiments, but also includes the technical scheme composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the art, without departing from the principles of the present utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered within the protection scope of the present utility model.

Claims

1. A brewing head assembly, characterized in that: include, A brewing head, wherein the brewing head is provided with an installation channel and an installation surface; A flow guiding assembly includes a first flow guiding member and a second flow guiding member. The first flow guiding member is disposed in the installation channel and has a flow guiding channel inside. The bottom end of the first flow guiding member has a flow guiding section that extends out of the installation channel. The second flow guiding member surrounds the flow guiding section and shields the installation surface, and is used to guide the water flow out of the flow guiding section away from the installation surface.

2. The brewing head assembly according to claim 1, characterized in that: The guide section is provided with an outlet, and the top of the first guide member is provided with an inlet. Both the inlet and the outlet are connected to the guide channel, which is used to guide water flow from the inlet to the outlet.

3. The brewing head assembly according to claim 1, characterized in that: The second guide includes a recessed platform, which has a bottom wall and an annular side wall. The bottom end of the annular side wall is connected to the periphery of the bottom wall, and the upper end of the annular side wall extends outward to form abutment. The bottom of the brewing head is provided with a boss, and the outer periphery of the boss is provided with a mounting groove. The mounting surface is formed on the surface of the boss and the mounting groove. The boss is embedded in the recess, and the abutment is embedded in the mounting groove so that the second guide member covers the mounting surface.

4. The brewing head assembly according to claim 3, characterized in that: The bottom wall is provided with a through hole, the guide section passes through the through hole, and the connection between the guide section and the through hole is sealed.

5. The brewing head assembly according to claim 3, characterized in that: The abutting part includes a first abutting section and a second abutting section. The first abutting section extends outward from the upper end of the annular sidewall, and the second abutting section extends downward from the end of the first abutting section. The first abutting section abuts against the end wall of the mounting groove, and the second abutting section abuts against the side wall of the mounting groove.

6. The brewing head assembly according to claim 5, characterized in that: The brewing head assembly includes a funnel disposed at the bottom of the brewing head, and a second flow guide disposed between the funnel and the brewing head; the second abutment section and the annular sidewall are spaced apart to form an installation gap, and a sealing element is provided in the installation gap to seal the connection between the second flow guide and the funnel.

7. The brewing head assembly according to any one of claims 1-6, characterized in that: The material of the brewing head is different from the material of the first flow guide and the second flow guide.

8. The brewing head assembly according to claim 6, characterized in that: The brewing head assembly includes a funnel support, with a first connecting part and a second connecting part at each end of the funnel support, a third connecting part on the outer periphery of the brewing head, the third connecting part being connected to the first connecting part, and a fourth connecting part on the outer periphery of the funnel, the fourth connecting part being connected to the second connecting part.

9. The brewing head assembly according to any one of claims 1-6, characterized in that: The installation channel is provided with a first limiting part, and the outer periphery of the first guide member is provided with a second limiting part, and the first limiting part and the second limiting part are mutually limiting.

10. A coffee machine, characterized in that, Includes the brewing head assembly as described in any one of claims 1-9.

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