Coffee machine foamer

Abstract

A coffee machine foamer, comprising a main housing, one end of the main housing being provided with a liquid inlet chamber and the other end of the main housing being provided with a foaming chamber. A liquid inlet is disposed inside the main housing, the liquid inlet chamber being in communication with the foaming chamber by means of the liquid inlet. A liquid outlet is provided at the bottom of the main housing, the liquid outlet being in communication with the foaming chamber. An air inlet hole is provided on one side of the main shell, the air inlet hole being in communication with the foaming chamber. A first blocking member and a second blocking member are further provided in the foaming chamber; the second blocking member is fixedly connected to the bottom of the main housing, and an end of the second blocking member close to the liquid inlet has a first blocking surface; the first blocking member is disposed on the second blocking member, and is disposed coaxially with the liquid inlet, the first blocking member being close to the liquid inlet and forming a spray port. The first blocking surface is used for receiving liquid sprayed from the spray port. Liquid coffee can undergo multiple mixing and foaming processes in the foaming chamber, so that a crema layer of the liquid coffee becomes thicker and finer.

Description

Coffee machine frother

[0001] The present application claims priority to the Chinese patent application No. 2024214550434, filed on June 24, 2024, and entitled "Coffee machine frother", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The utility model belongs to liquid foaming field, more particularly to a coffee machine frother. BACKGROUND

[0003] With the improvement of living standards, coffee has gradually become a part of people's life, and the demand for coffee drinking is also getting higher and higher. The foam oil of coffee is not delicate, and the oil layer is not thick enough, with more coarse foam, resulting in poor taste of coffee drinking. Moreover, the coffee oil is less, and the extraction of oil is not sufficient, which often occurs, and it has brought great challenge to the production and debugging of espresso coffee machine.

[0004] In view of the foregoing status quo, the existing coffee machine frother sprays the coffee liquid at high pressure, so that the coffee liquid undergoes a foaming process in the frother, thereby improving the oiliness and thickness of the coffee foam. However, the coffee oil after one foaming is still less, and the effect of coffee oil is still not delicate and mellow enough.

[0005] SUMMARY

[0006] The utility model discloses a coffee machine frother, which can mix and foam the coffee liquid multiple times in the foaming cavity, so that the foam oil layer of the coffee liquid is thicker and more delicate.

[0007] The technical scheme is as follows:

[0008] The coffee machine frother comprises a main shell, a liquid inlet cavity is formed at one end of the main shell, a foaming cavity is formed at the other end of the main shell, a liquid inlet is arranged in the main shell, the liquid inlet cavity is connected to the foaming cavity through the liquid inlet, a liquid outlet is further arranged at the bottom of the main shell, the liquid outlet is connected to the foaming cavity, an air inlet hole is arranged on one side of the main shell, and the air inlet hole is connected to the foaming cavity; a first blocking piece and a second blocking piece are further arranged in the foaming cavity, the second blocking piece is fixedly connected to the bottom of the main shell, one end of the second blocking piece close to the liquid inlet further has a first blocking surface, the first blocking piece is arranged on the second blocking piece, the first blocking piece is coaxially arranged with the liquid inlet, the first blocking piece is close to the liquid inlet and forms a jet port, and the first blocking surface is used for receiving the liquid jetted out of the jet port.

[0009] The coffee liquid flows into the foaming cavity from the liquid inlet cavity through the liquid inlet, and the first blocking piece is close to the liquid inlet, so that the coffee liquid impacts the first blocking piece from the liquid inlet. A gap exists between the first blocking piece and the liquid inlet, thereby forming the jet port, and the coffee liquid is sprayed from the jet port to the first blocking surface, so that the high-speed sprayed coffee liquid is splashed. When the coffee liquid is sprayed at high speed, a negative pressure siphon effect is generated in the foaming cavity, external air flows into the foaming cavity through the air inlet hole, the sprayed coffee liquid is mixed with the air to form first foaming liquid, a part of the splashed first foaming liquid is mixed with the sprayed coffee liquid under the siphon effect and continues to circulate the foaming process to form mixed foaming liquid, and another part of the splashed first foaming liquid and the multiple mixed foaming liquid flow out from the liquid outlet at the bottom of the foaming cavity, so that the foam oil layer of the coffee liquid is thicker and more delicate.

[0010] In one of the embodiments, the main shell is further provided with a first protruding part located in the foaming cavity, the first protruding part surrounds the liquid inlet, and one end of the first protruding part is provided with a second blocking surface corresponding to the first blocking surface.

[0011] According to the above technical scheme, under the siphon effect of the air in the foaming cavity, the first protruding part shortens the distance between the first blocking surface and the liquid outlet, so that more first foaming liquid splashed from the first blocking surface rebounds to the second blocking surface, the splashed first foaming liquid is splashed again after passing through the second blocking surface, so that the foaming liquid foam is smaller, and then the high-speed liquid sprayed from the jet port is mixed, the foaming process is repeated multiple times, and the oil layer of the coffee liquid foam is thicker and more delicate.

[0012] In one of the embodiments, along the radial direction of the main shell, the radial size of the second blocking surface is greater than the radial size of the first blocking surface.

[0013] According to the above technical scheme, the high-speed foaming liquid splashed through the first blocking surface moves away from the jet port, and the radial size of the second blocking surface is greater than the radial size of the first blocking surface, so that more foaming liquid splashed outward can rebound to the second blocking surface, thereby making more foaming liquid particles smaller, and forming more delicate liquid foam after being mixed with air.

[0014] In one of the embodiments, along the axial direction of the main shell, the air inlet hole is located obliquely above the second blocking surface.

[0015] The air flowing in can flow to the vicinity of the jetting port more quickly due to the siphon effect, and the air flows from above the second blocking surface to the jetting port first, so that more liquid splashed through the first blocking surface moves to the second blocking surface and moves in a spiral direction towards the jetting port after being splashed through the second blocking surface, thereby ensuring that more splashed liquid is mixed and foamed.

[0016] In one of the embodiments, the second blocking member is hollow, the foaming cavity is further provided with a first column, and the second blocking member is sleeved on the first column; the first elastic member is sleeved on the first column, the first blocking member is mounted on the first elastic member, and the first blocking member abuts against the liquid inlet.

[0017] The first column is used to mount the second blocking member and the first elastic member, the first elastic member enables the first blocking member to abut against the liquid inlet, so that a jetting port is formed between the first blocking member and the liquid inlet after the liquid impacts the first blocking member with greater force, the pressure and speed of liquid jetting are improved, the granularity of the jetted liquid is smaller, and the foam formed by unit volume of liquid is more delicate and mellow after multiple cycles of foaming.

[0018] In one of the embodiments, the liquid inlet is a circular hole, the first blocking member is a sphere, the diameter of the first blocking member is greater than the diameter of the liquid inlet, and the first blocking surface is annular.

[0019] The first blocking member in the form of a sphere can reduce the friction loss of the liquid impacting the first blocking member and jetting out of the jetting port, the jetted liquid can flow more smoothly from the jetting port to the first blocking surface, the first blocking member in the form of a sphere cooperates with the circular liquid inlet to make the liquid particles distributed more uniformly around the jetting port, the annular first blocking surface also makes the splashed liquid particles distributed more uniformly, the uniformity of the foaming of the liquid particles is improved, and the delicacy of the liquid foam is ensured.

[0020] In one of the embodiments, the distance between the first blocking surface and the main shell at the upper end of the foaming cavity in the axial direction of the main shell is less than the diameter of the first blocking member.

[0021] The spherical first blocking member is stably mounted between the second blocking member and the liquid inlet, so that the jetted liquid is splashed after being jetted from the jetting port to the first blocking surface, and the stability of the liquid circulation foaming process is ensured.

[0022] In one of the embodiments, the second blocking piece is provided with a through hole, and the second blocking piece at the lower end of the through hole matches the first column along the axial direction of the second blocking piece, and the inner diameter of the second blocking piece upward along the through hole is greater than the diameter of the first column, and one end of the first elastic piece is close to the lower end of the through hole.

[0023] By using the above technical scheme, when the liquid impacts the second blocking piece, part of the liquid flows along the second blocking piece to the hollow interior of the first blocking piece, and because the first elastic piece is located between the first column and the second blocking piece, the long-term residual liquid will erode the first elastic piece, the through hole can discharge the residual liquid into the foaming cavity and discharge it from the liquid outlet, thereby guaranteeing the service life of the first elastic piece and the pressure on the first blocking piece.

[0024] In one of the embodiments, the main shell comprises a first shell and a second shell, the liquid inlet cavity is located at one end of the first shell, and the first shell is provided with the liquid inlet at the middle part; the second shell is fixedly connected to the other end of the first shell, and the foaming cavity is formed between the second shell and the first shell.

[0025] By using the above technical scheme, the separated structure of the first shell and the second shell facilitates the installation and disassembly of the main shell and each component, and facilitates replacement and maintenance when one of the components is damaged.

[0026] In one of the embodiments, the other end of the first shell is provided with a surrounding rib, the surrounding rib is located outside the liquid inlet, and the surrounding rib further extends to one side of the second blocking piece; the foaming cavity comprises a first foaming area and a second foaming area, the first blocking surface and the first shell form the first foaming area, and the second blocking piece and the surrounding rib form the second foaming area.

[0027] By using the above technical scheme, after the sprayed liquid is mixed and foamed in the first foaming area, it gradually flows to the second foaming area, and because the liquid particles splashed into the second foaming area still have a high speed, the mixed and foamed liquid collides with the surrounding rib, splashes and rebounds on the side wall of the second blocking piece, and part of the liquid will splash and rebound multiple times between the surrounding rib and the side wall of the second blocking piece, multiple splashes further make the particle size of the foamed liquid in the second foaming area smaller, and further mix and foam with air under the siphon effect, thereby improving the fineness and thickness of the foamed liquid in a unit volume. BRIEF DESCRIPTION OF DRAWINGS

[0028] Fig. 1 is a first direction view of the overall structure of the utility model;

[0029] Fig. 2 is a first direction exploded view of the overall structure of the present application;

[0030] Fig. 3 is a second direction view of the first shell structure of the present application;

[0031] Fig. 4 is a second direction sectional view of the overall structure of the present application.

[0032] Fig. 5 is an enlarged schematic view of the structure at A in Fig. 4 of the present application.

[0033] Fig. 6 is an enlarged schematic view of the structure at B in Fig. 5 of the present application.

[0034] Reference signs: 10, main shell, 11, air inlet hole, 12, injection port, 20, first shell, 21, liquid inlet cavity, 22, liquid inlet, 23, surrounding rib, 24, first protruding part, 241, second blocking surface, 30, second shell, 31, foaming cavity, 311, first foaming area, 312, second foaming area, 32, liquid outlet, 33, first blocking part, 34, second blocking part, 341, first blocking surface, 342, through hole, 35, first column, 36, first elastic part. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present application, specific embodiments of the present application will be described in more detail below with reference to the accompanying drawings.

[0036] Unless specifically stated or defined otherwise, the terms "first, second,..." used herein are merely used for distinguishing names and do not represent a specific number or order.

[0037] Unless specifically stated or defined otherwise, the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] It should be noted that "fixed to", "connected to" in this paper can be directly fixed or connected to an element, or indirectly fixed or connected to an element.

[0039] The coffee machine frother shown in Figs. 1-6 comprises a main shell 10, which comprises a first shell 20 and a second shell 30. The separate structure of the first shell 20 and the second shell 30 facilitates the installation and removal of the main shell 10 and each component, and facilitates the replacement and repair when one of the components is damaged. One end of the first shell 20 is provided with a liquid inlet cavity 21, and the second shell 30 is fixedly connected to the other end of the first shell 20. The second shell 30 and the first shell 20 form a frothing cavity 31 therebetween. The middle of the first shell 20 is provided with a liquid inlet 22, and the liquid inlet cavity 21 is communicated with the frothing cavity 31 through the liquid inlet 22. The bottom of the second shell 30 is further provided with a liquid outlet 32, and the liquid outlet 32 is communicated with the frothing cavity 31. One side of the main shell 10 is provided with an air inlet hole 11, and the air inlet hole 11 is communicated with the frothing cavity 31. The frothing cavity 31 is further provided with a first blocking piece 33 and a second blocking piece 34. The second blocking piece 34 is fixedly connected to the bottom of the second shell 30, and the second blocking piece 34 is further provided with a first blocking surface 341 at the end close to the liquid inlet 22. The first blocking piece 33 is arranged on the second blocking piece 34, and the first blocking piece 33 is coaxially arranged with the liquid inlet 22. The coffee liquid flows from the liquid inlet cavity 21 into the frothing cavity 31 through the liquid inlet 22. The first blocking piece 33 is close to the liquid inlet 22, and the coffee liquid impacts on the first blocking piece 33 from the liquid inlet 22. There is a gap between the first blocking piece 33 and the liquid inlet 22, thereby forming a jet port 12. The jet port 12 corresponds to the first blocking surface 341, and the coffee liquid is sprayed from the jet port 12 to the first blocking surface 341, thereby causing the high-speed sprayed coffee liquid to splash. When the coffee liquid is sprayed at high speed, a negative pressure siphon effect is generated in the frothing cavity 31. The external air flows into the frothing cavity 31 through the air inlet hole 11. The sprayed coffee liquid is mixed with the air to form a first frothing liquid. The splashed part of the first coffee frothing liquid is mixed with the sprayed coffee liquid under the siphon effect and continues to circulate the frothing process to form a mixed frothing liquid. Another part of the splashed first frothing liquid and the multiple mixed frothing liquid flow out of the liquid outlet 32 at the bottom of the frothing cavity 31, thereby making the foam cream layer of the coffee liquid thicker and more delicate.

[0040] As shown in Figs. 2-5, the first shell 20 is further described as follows:

[0041] The other end of the first shell 20 is also provided with a first protruding part 24 located in the foaming cavity 31; the first protruding part 24 surrounds the liquid inlet 22, one end of the first protruding part 24 is provided with a second blocking surface 241 corresponding to the first blocking surface 341; under the siphon effect of air in the foaming cavity 31, the first protruding part 24 shortens the distance between the first blocking surface 341 and the liquid outlet 32, so that more first foaming liquid rebounds to the second blocking surface 241 after splashing from the first blocking surface 341; along the radial direction of the main shell 10, the radial dimension of the second blocking surface 241 is greater than that of the first blocking surface 341, so that more foaming liquid can rebound to the second blocking surface 241, and the first foaming liquid splashed after the second blocking surface 241 splashes again, so that the foam of the foaming liquid is smaller, and then mixes with the high-speed liquid sprayed from the spray port 12, and the foaming process is repeated multiple times, further making the oil ester layer of the coffee liquid foam thicker and more delicate; along the axial direction of the main shell 10, the air inlet hole 11 is located obliquely above the second blocking surface 241, and the air inlet hole 11 is close to the second blocking surface 241; due to the siphon effect, the flowing air can flow more quickly near the spray port 12, and the air flows from above the second blocking surface 241 to the spray port 12 first, so that more liquid splashed through the first blocking surface 341 moves to the second blocking surface 241 and splashes after the second blocking surface 241, and then moves to the spray port 12, so as to ensure that more splashed liquid is mixed and foamed.

[0042] The other end of the first shell 20 is also provided with a surrounding rib 23 located outside the liquid inlet 22, the surrounding rib 23 also extends to one side of the second blocking part 34, and the surrounding rib 23 is close to the second blocking part 34 relative to the side wall of the second shell 30; the foaming cavity 31 includes a first foaming area 311 and a second foaming area 312, the first blocking surface 341 and the first shell 20 form the first foaming area 311, and the second blocking part 34 and the surrounding rib 23 form the second foaming area 312; after the sprayed liquid is mixed and foamed in the first foaming area 311, it gradually flows to the second foaming area 312; due to the high speed of the liquid particles splashed into the second foaming area 312, the mixed and foamed liquid collides with the surrounding rib 23 and rebounds to the side wall of the second blocking part 34, and part of the liquid rebounds multiple times between the surrounding rib 23 and the side wall of the second blocking part 34, multiple splashes further make the foaming liquid particles in the second foaming area 312 smaller, and under the siphon effect, the foaming liquid further mixes with air to improve the delicacy and thickness of the foaming liquid in unit volume.

[0043] As shown in FIG. 2 to FIG. 6, the inlet 22, the first barrier 33 and the second barrier 34 are further described as follows:

[0044] The second barrier 34 is hollow, and the foaming cavity 31 is further provided with a first column 35, and the second barrier 34 is sleeved on the first column 35. The first elastic member 36 is further provided between the second barrier 34 and the first column 35, and the first elastic member 36 is sleeved on the first column 35. The first barrier 33 is installed on the first elastic member 36, and the first elastic member 36 enables the first barrier 33 to abut against the inlet 22, so that the jetting port 12 is formed between the first barrier 33 and the inlet 22 after the liquid impacts the first barrier 33 with greater force, thereby improving the pressure and speed of liquid jetting, and further making the liquid particles sprayed smaller. After multiple cycles of foaming, the foam formed by unit volume of liquid is more delicate and mellow. The inlet 22 is a circular hole, the first barrier 33 is a sphere, the diameter of the first barrier 33 is greater than the hole diameter of the inlet 22, and the first barrier surface 341 is annular. The first barrier 33 in the form of a sphere can reduce the friction loss of the liquid impacting the first barrier 33 and sprayed out of the jetting port 12, so that the sprayed liquid is more smoothly sprayed from the jetting port 12 to the first barrier surface 341. Moreover, the first barrier 33 in the form of a sphere cooperates with the circular inlet 22 to make the liquid particles sprayed from the jetting port 12 more uniformly distributed in all directions. The annular first barrier surface 341 also makes the liquid particles after splashing more uniformly distributed, thereby improving the uniformity of liquid particle foaming and further ensuring the delicacy of liquid foam. Along the axial direction of the main shell 10, the distance between the first barrier surface 341 and the main shell 10 located at the upper end of the foaming cavity 31 is less than the diameter of the first barrier 33, so that the first barrier 33 in the form of a sphere is stably installed between the second barrier 34 and the inlet 22, so that the sprayed liquid is always splashed after being sprayed from the jetting port 12 to the first barrier surface 341, thereby ensuring the stability of the liquid circulation foaming process.

[0045] Since the liquid flows along the second barrier 34 to the hollow interior of the first barrier 33 when impacting the second barrier 34, the long-term residual liquid will erode the first elastic member 36 due to the first elastic member 36 being located between the first column 35 and the second barrier 34. The second barrier 34 is further provided with a through hole 342 in the middle part thereof. In the axial direction of the second barrier 34, the second barrier 34 at the lower end of the through hole 342 matches the first column 35, preventing the residual liquid from continuing to flow below the through hole 342. The inner diameter of the second barrier 34 in the upward direction of the through hole 342 is greater than the diameter of the first column 35. One end of the first elastic member 36 is close to the lower end of the through hole 342, so that the through hole 342 can completely discharge the residual liquid into the foaming cavity 31 and discharge it from the liquid outlet 32, thereby guaranteeing the service life of the first elastic member 36 and the pressure on the first barrier 33.

[0046] The above embodiments are not exhaustive based on the present application, and in addition to the above, there can be a plurality of other embodiments not listed. Any replacement and improvement made without violating the concept of the present application belongs to the protection scope of the present application.

Claims

1. Coffee machine frother, characterized in that, The main shell has a liquid inlet cavity at one end and a foaming cavity at the other end, and is provided with a liquid inlet opening, the liquid inlet cavity is communicated with the foaming cavity through the liquid inlet opening, the bottom of the main shell is further provided with a liquid outlet opening, the liquid outlet opening is communicated with the foaming cavity, and the side of the main shell is provided with an air inlet hole communicated with the foaming cavity. The foaming cavity is further provided with a first blocking piece and a second blocking piece, the second blocking piece is fixedly connected to the bottom of the main shell, and the end of the second blocking piece close to the liquid inlet opening is further provided with a first blocking surface, the first blocking piece is arranged on the second blocking piece, the first blocking piece is coaxially arranged with the liquid inlet opening, the first blocking piece is close to the liquid inlet opening and forms a jet opening, and the first blocking surface is used for receiving the liquid jetted out of the jet opening.

2. Coffee machine frother according to claim 1, characterized in that The main shell is further provided with a first protruding part in the foaming cavity. The first protruding part surrounds the liquid inlet opening, and the first protruding part is provided with a second blocking surface at one end, and the second blocking surface corresponds to the first blocking surface.

3. Coffee machine frother according to claim 2, characterized in that In the radial direction of the main shell, the radial dimension of the second blocking surface is greater than the radial dimension of the first blocking surface.

4. The coffee machine frother of claim 2, wherein, In the axial direction of the main shell, the air inlet hole is located obliquely above the second blocking surface.

5. The coffee maker frother of claim 1, wherein, The second blocking piece is hollow, the foaming cavity is further provided with a first column, and the second blocking piece is sleeved on the first column. The first elastic piece is sleeved on the first column, the first blocking piece is mounted on the first elastic piece, and the first blocking piece abuts against the liquid inlet opening.

6. The coffee machine frother of claim 5, wherein, The liquid inlet opening is a circular hole, the first blocking piece is a sphere, the diameter of the first blocking piece is greater than the hole diameter of the liquid inlet opening, and the first blocking surface is annular.

7. The coffee machine frother of claim 6, wherein, In the axial direction of the main shell, the distance between the first blocking surface and the main shell at the upper end of the foaming cavity is less than the diameter of the first blocking piece.

8. The coffee machine frother of claim 5, wherein, The second blocking piece is provided with a through hole in the middle part, in the axial direction of the second blocking piece, the second blocking piece at the lower end of the through hole matches the first column, the inner diameter of the second blocking piece upwardly along the through hole is greater than the diameter of the first column, and one end of the first elastic piece is close to the lower end of the through hole.

9. Coffee machine frother according to any of the claims 1 to 8, characterized in that, The main shell comprises a first shell and a second shell, the liquid inlet cavity is located at one end of the first shell, and the first shell is provided with the liquid inlet opening in the middle part; The second shell is fixedly connected to the other end of the first shell, and the second shell and the first shell form the foaming cavity.

10. Coffee machine frother according to claim 9, characterized in that The other end of the first shell is provided with a surrounding rib, the surrounding rib is located outside the liquid inlet opening, and the surrounding rib further extends to one side of the second blocking piece; The foaming cavity comprises a first foaming area and a second foaming area, the first blocking surface and the first shell form the first foaming area, and the second blocking piece and the surrounding rib form the second foaming area.

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