Air inlet adjusting structure of milk box of coffee machine

Abstract

The utility model discloses an air inlet adjusting structure of a coffee machine milk box, which comprises a milk foam box and a milk foam cover covered on the milk foam box, a foaming pipe group used for mixing foaming milk is arranged in the milk foam cover, and an air inlet adjusting joint used for adjusting air inlet amount is arranged on the milk foam cover. The air inlet adjusting joint comprises a fixedly arranged air inlet adjusting part and an air inlet knob rotationally arranged on the air inlet adjusting part, an abutting convex part is spirally arranged on the inner wall of the air inlet adjusting part, an air inlet channel communicated with the foaming pipe set is formed in the air inlet knob, and the air inlet channel is gradually enlarged in the air inlet direction; the abutting protruding part abuts against the air inlet channel, and the air inlet rotary knob rotates so as to adjust the size of the caliber of the output end of the air inlet channel.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machines, in particular to an air intake regulating structure of a milk box of a coffee machine. Background Art

[0002] Coffee is a beverage made from roasted and ground coffee beans. In order to improve the taste, milk foam is usually added to coffee, and a milk frother is an appliance for making milk foam.

[0003] The milk frother includes a milk tube and an air inlet pipe connected to the milk tube. The diameter of the air inlet pipe is quite small. When steam drives the milk to flow through the milk tube, negative pressure is formed in the milk tube. A trace amount of air is sucked into the milk tube through the small diameter air inlet pipe and mixed with the milk to form milk foam.

[0004] The diameter of the air intake pipe in the prior art is fixed, and the amount of trace air entering through the air intake pipe is also fixed, resulting in the inability to adjust the bubble size, thereby failing to meet the needs of different users. Utility Model Content

[0005] In order to solve the technical problems existing in the background technology, the utility model proposes an air intake adjustment structure for a milk tank of a coffee machine.

[0006] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0007] An air intake regulating structure for a coffee machine milk tank comprises a milk frothing tank and a milk frothing cover provided on the milk frothing tank, wherein a frothing tube group for mixing and frothing milk is provided in the milk frothing cover, and an air intake regulating joint for regulating the air intake amount is provided on the milk frothing cover;

[0008] The air intake regulating joint includes a fixed air intake regulating part and an air intake knob rotatably arranged on the air intake regulating part. An abutting protrusion is spirally arranged on the inner wall of the air intake regulating part. An air intake channel connected to the foaming tube group is formed on the air intake knob. The air intake channel gradually increases in size along the air intake direction. The abutting protrusion abuts against the air intake channel, and the air intake knob is rotated to adjust the size of the air intake channel output port diameter.

[0009] Preferably, the frothing tube assembly includes a mixing tube, a steam inlet tube, an air inlet tube, a milk inlet tube, and a foamed milk discharge tube; the steam inlet tube, air inlet tube, and milk inlet tube are respectively connected to the input end of the mixing tube, the milk inlet tube is connected to the milk frothing tank, and the air inlet tube is connected to the air inlet regulating joint. With the above improvement, the steam inlet tube can be connected to the coffee machine body to input steam into the mixing tube, the air inlet tube allows external air to enter the mixing tube, and the milk inlet tube can input milk from the milk frothing tank into the mixing tube. The mixing tube combines milk, steam, and air to produce foamed milk, which is discharged through the foamed milk discharge tube, thereby achieving milk froth production.

[0010] Preferably, a connecting sleeve is provided around the outer periphery of the air inlet adjustment member, the air inlet adjustment member is snapped into the connecting sleeve, the air inlet knob is rotated into the connecting sleeve, and the connecting sleeve forms an air outlet for connecting to the frothing tube assembly. With this improvement, the air inlet knob can be rotated to adjust the diameter of the air inlet channel output port on the air inlet knob to control the air intake volume. Air enters the mixing tube through the air outlet on the connecting sleeve, thereby producing milk froth.

[0011] Preferably, a rotation-stopping protrusion is formed on the outer periphery of the air intake adjusting member, and a rotation-stopping groove is formed on the connecting sleeve for the rotation-stopping protrusion to be placed in. Through the above improvement, the rotation-stopping protrusion of the air intake adjusting member is placed in the rotation-stopping groove, thereby fixing the air intake adjusting member to the connecting sleeve and preventing it from rotating with the air intake knob. As the air intake knob rotates, the abutting protrusion spirally provided on the inner wall of the air intake adjusting member abuts different positions of the air intake channel to adjust the diameter of the output port of the air intake channel, thereby controlling the intake volume.

[0012] Preferably, the air intake knob is formed with a rotating protrusion, and the connecting sleeve is formed with a rotating groove for the rotating protrusion to rotate. Through the above improvement, the rotating groove and the rotating protrusion cooperate to improve the stability of the air intake knob during rotation.

[0013] Preferably, the connecting sleeve is formed with a disengagement groove connected to the rotation groove. Through the above improvement, during daily use, the rotating protrusion can be rotated to the disengagement groove so that the rotating protrusion can be pulled out along the disengagement groove, thereby cleaning the air intake channel on the air intake knob and avoiding blockage of the air intake channel.

[0014] Preferably, the mixing tube includes a connecting tube and an output tube. The connecting tube is inserted into the output tube, forming a mixing space between the connecting tube and the output tube, and the foamed milk discharge tube is connected to the output end of the output tube. With this improvement, steam, air, and milk enter the mixing space and mix to form foamed milk, which can then be discharged through the foamed milk discharge tube.

[0015] Preferably, the connecting pipe is formed with an air inlet, a milk inlet, and a steam inlet, which are connected to the mixing space. The output pipe is formed with a first port connected to the milk inlet pipe and a second port connected to the air inlet. The first port is connected to the milk inlet pipe, and the second port is connected to the air inlet pipe. The steam inlet pipe is inserted into the connecting pipe and connected to the steam inlet. With the above improvement, the milk inlet pipe inputs milk from the milk frothing box into the milk inlet through the first port, air is input into the air inlet through the air inlet pipe, and steam enters the steam inlet through the steam inlet pipe, so that the milk, steam, and air respectively enter the mixing space and mix to form foamed milk.

[0016] Preferably, the junction areas of the mixing pipe, steam inlet pipe, air inlet pipe, milk inlet pipe, and foamed milk discharge pipe are provided with sealing rings. Through the above improvements, the sealing performance of the connection parts is improved.

[0017] Preferably, the air intake regulating member is made of silicone. Through the above improvements, the sealing performance of the air intake regulating member and the air intake knob is improved.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] A frothing tube group for mixing and frothing milk is provided in the milk frothing cover, and an air intake regulating joint for regulating the air intake amount is provided on the milk frothing cover. The air intake regulating joint includes a fixed air intake regulating part and an air intake knob rotatably provided on the air intake regulating part. An abutting protrusion is spirally provided on the inner wall of the air intake regulating part, and a connecting air intake channel is formed on the air intake knob. Since the air intake channel gradually increases along the air intake direction, as the air intake knob rotates, the abutting position of the abutting protrusion and the air intake channel will change, thereby controlling the size of the output port of the air intake channel to control the air intake amount. During use, the air intake amount can be adjusted according to demand to achieve stepless adjustment. The greater the air intake amount, the larger the milk foam, and the smaller the air intake amount, the denser the milk foam, so as to meet the needs of different users and greatly improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the overall structure of the milk foam box of the present invention;

[0021] Figure 2 This is an exploded view of the overall structure of the milk foam box of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the foaming tube group and the air intake regulating joint in the present invention;

[0023] Figure 4 This is a cross-sectional view of the foaming tube assembly of the present invention;

[0024] Figure 5This is a schematic structural diagram of a mixing tube of the present invention;

[0025] Figure 6 This is a schematic structural diagram of the connecting pipe of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure inside the connecting pipe of the utility model;

[0027] Figure 8 This is a schematic structural diagram of the output tube of the utility model;

[0028] Figure 9 This is an exploded view of the air intake regulating joint of the present invention;

[0029] Figure 10 This is a structural diagram of the air intake adjustment member of the present utility model;

[0030] Figure 11 This is a structural diagram of the connecting sleeve of the utility model;

[0031] Figure 12 This is a structural diagram of the air intake knob of the present utility model;

[0032] In the figure: 1. Milk frothing box; 2. Milk frothing cover; 3. Frothing tube assembly; 4. Air inlet adjustment joint; 1.1. Air inlet adjustment member; 1.2. Air inlet knob; 1.3. Connecting sleeve; 2.1. Abutting protrusion; 2.2. Air inlet channel; 2.3. Air outlet pipe; 2.4. Anti-rotation protrusion; 2.5. Anti-rotation groove; 2.6. Rotation protrusion; 2.7. Rotation groove; 2.8. Disengagement groove; 3.1. Mixing tube; 3.2. Steam inlet pipe; 3.3. Milk inlet pipe; 3.4. Foamed milk discharge pipe; 3.5. Air inlet pipe; 4.1. Connecting pipe; 4.2. Output pipe; 4.3. Mixing space; 4.4. Air inlet; 4.5. Milk inlet; 4.6. Steam inlet; 4.7. First pipe opening; 4.8. Second pipe opening; 4.9. Sealing ring; 5.1. First protrusion; 5.2. Second protrusion DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] It should be understood that although terms such as upper, middle, lower, top, end, etc. appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish elements from each other for ease of understanding, and are not used to define any direction or order limitation.

[0035] like Figures 1 to 12 As shown, an air intake regulating structure of a milk tank of a coffee machine includes a milk frothing tank 1 and a milk frothing cover 2 covering the milk frothing tank 1. A frothing tube group 3 for mixing and frothing milk is provided in the milk frothing cover 2, and an air intake regulating joint 4 for regulating the air intake amount is provided on the milk frothing cover 2.

[0036] Specifically, the air intake regulating joint 4 includes a fixed air intake regulating part 1.1 and an air intake knob 1.2 rotated on the air intake regulating part 1.1. A contact protrusion 2.1 is spirally provided on the inner wall of the air intake regulating part 1.1. An air intake channel 2.2 connected to the foaming tube group 3 is formed on the air intake knob 1.2. The air intake channel 2.2 gradually increases in size along the air intake direction. The contact protrusion 2.1 abuts against the air intake channel 2.2, and the air intake knob 1.2 is rotated to adjust the size of the output port diameter of the air intake channel 2.2.

[0037] A frothing tube group 3 for mixing and frothing milk is provided in the milk frothing cover 2, and an air intake regulating joint 4 for regulating the air intake amount is provided on the milk frothing cover 2. The air intake regulating joint 4 includes a fixed air intake regulating member 1.1 and an air intake knob 1.2 rotatably arranged on the air intake regulating member 1.1. An abutting protrusion 2.1 is spirally provided on the inner wall of the air intake regulating member 1.1, and a connecting air intake channel 2.2 is formed on the air intake knob 1.2. Since the air intake channel 2.2 gradually increases along the air intake direction, as the air intake knob 1.2 rotates, the abutting position of the abutting protrusion 2.1 and the air intake channel 2.2 will change, thereby controlling the size of the output port of the air intake channel 2.2 to control the air intake amount and realize stepless adjustment. During use, the air intake amount can be adjusted according to demand. The greater the air intake amount, the larger the milk foam, and the smaller the air intake amount, the denser the milk foam, thereby meeting the needs of different users and greatly improving the user experience.

[0038] like Figures 1 to 8 As shown, as a further explanation of the composition of the foaming tube group 3, the foaming tube group 3 includes a mixing tube 3.1, a steam inlet tube 3.2, an air inlet tube 3.5, a milk inlet tube 3.3, and a foamed milk discharge tube 3.4. The steam inlet tube 3.2, the air inlet tube 3.5, and the milk inlet tube 3.3 are respectively connected to the input end of the mixing tube 3.1, the milk inlet tube 3.3 is connected to the milk foam box 1, and the air inlet tube 3.5 is connected to the air inlet regulating joint 4.

[0039] Among them, the steam inlet pipe 3.2 can be connected to the coffee machine body to input steam into the mixing tube 3.1, the air inlet pipe 3.5 can allow external air to enter the mixing tube 3.1, and the milk inlet pipe 3.3 can input milk in the milk frothing box 1 into the mixing tube 3.1. The mixing tube 3.1 produces foamed milk by combining milk, steam and air, and the foamed milk is discharged through the foamed milk discharge pipe 3.4, thereby realizing the production of milk foam.

[0040] like Figures 5 to 8 As shown, further explanation of the implementation method of the mixing tube 3.1 is provided, the mixing tube 3.1 includes a connecting tube 4.1 and an output tube 4.2, the connecting tube 4.1 is inserted into the output tube 4.2, a mixing space 4.3 is formed between the connecting tube 4.1 and the output tube 4.2, and the foamed milk discharge tube 3.4 is connected to the output end of the output tube 4.2, steam, air, and milk will enter the mixing space 4.3 and be mixed to form foamed milk, and the foamed milk can be discharged through the foamed milk discharge tube 3.4.

[0041] Specifically, the connecting pipe 4.1 is formed with an air inlet 4.4, a milk inlet 4.5, and a steam inlet 4.6 connected to the mixing space 4.3. The output pipe 4.2 is formed with a first pipe opening 4.7 connected to the milk inlet pipe 3.3 and a second pipe opening 4.8 connected to the air inlet 4.4. The first pipe opening 4.7 is connected to the milk inlet pipe 3.3, and the second pipe opening 4.8 is connected to the air inlet pipe 3.5. The steam inlet pipe 3.2 is inserted into the connecting pipe 4.1 and connected to the steam inlet 4.6.

[0042] During the foaming process, the milk in the milk frothing tank 1 is fed into the connecting pipe 4.1 through the first pipe opening 4.7 through the milk inlet pipe 3.3. The milk flows into the mixing space 4.3 through the milk inlet opening 4.5. Air is fed into the connecting pipe 4.1 through the air inlet pipe 3.5 and enters the mixing space 4.3 through the air inlet opening 4.4. Steam enters the connecting pipe 4.1 through the steam inlet pipe 3.2 and enters the mixing space 4.3 through the steam opening. As a result, the milk, steam, and air enter the mixing space 4.3 respectively and mix to form foamed milk. The mixed foamed milk can be discharged through the foamed milk discharge pipe 3.4.

[0043] Preferably, a sealing ring 4.9 is provided at the joint area of ​​the mixing pipe 3.1, the steam inlet pipe 3.2, the air inlet pipe 3.5, the milk inlet pipe 3.3, and the foamed milk discharge pipe 3.4, thereby improving the sealing of the connection parts and ensuring the foaming effect.

[0044] like Figure 2 、 Figure 3 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12As shown, further explanation of the installation of the air intake adjustment member 1.1 and the air intake knob 1.2 in this embodiment is provided. A connecting sleeve 1.3 is provided on the outer periphery of the air intake adjustment member 1.1. The air intake adjustment member 1.1 is clamped in the connecting sleeve 1.3. The air intake knob 1.2 is rotated in the connecting sleeve 1.3, and an air outlet pipe opening 2.3 connected to the foaming tube group 3 is formed on the connecting sleeve 1.3. The air intake knob 1.2 can be rotated to adjust the size of the output port of the air intake channel 2.2 on the air intake knob 1.2 to control the air intake amount. The air enters the mixing tube 3.1 through the air outlet pipe opening 2.3 on the connecting sleeve 1.3, thereby making milk foam.

[0045] Specifically, a stop-rotation protrusion 2.4 is formed on the outer periphery of the air intake adjusting member 1.1, and a stop-rotation groove 2.5 for the stop-rotation protrusion 2.4 to be placed is formed on the connecting sleeve 1.3. The stop-rotation protrusion 2.4 of the air intake adjusting member 1.1 is placed in the stop-rotation groove 2.5, so that the air intake adjusting member 1.1 is fixed on the connecting sleeve 1.3, so that it will not rotate with the air intake knob 1.2. Therefore, as the air intake knob 1.2 rotates, the abutting protrusion 2.1 spirally provided on the inner wall of the air intake adjusting member 1.1 will abut against different positions of the air intake channel 2.2 to adjust the size of the output port diameter of the air intake channel 2.2, thereby controlling the air intake amount.

[0046] In addition, a rotating protrusion 2.6 is formed on the rotating block, and a rotating groove 2.7 for the rotating protrusion 2.6 to rotate is formed on the connecting sleeve 1.3. The rotating groove 2.7 cooperates with the rotating protrusion 2.6 to improve the stability of the air intake knob 1.2 during rotation.

[0047] Furthermore, a disengagement groove 2.8 connected to the rotation groove 2.7 is formed on the connecting sleeve 1.3. During daily use, the rotating protrusion 2.6 can be rotated to the disengagement groove 2.8 so that the rotating protrusion 2.6 can be pulled out along the disengagement groove 2.8, thereby cleaning the air intake channel 2.2 on the air intake knob 1.2 and avoiding blockage of the air intake channel 2.2.

[0048] Preferably, the rotating protrusion 2.6 includes a first protrusion 5.1 and a second protrusion 5.2, the first protrusion 5.1 is larger than the second protrusion 5.2, and a disengagement groove 2.8 matching the size of the first protrusion 5.1 and the second protrusion 5.2 is formed on the connecting sleeve 1.3, thereby avoiding installation misalignment.

[0049] Preferably, the air intake regulating member 1.1 is made of silicone material to improve the sealing performance between the air intake regulating member 1.1 and the air intake knob 1.2.

[0050] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An air intake regulating structure for a milk tank of a coffee machine, comprising a milk foam tank (1) and a milk foam cover (2) arranged on the milk foam tank (1), characterized in that: A foaming tube group (3) for mixing and foaming milk is provided in the foaming cover (2), and an air intake regulating joint (4) for regulating the air intake amount is provided on the foaming cover (2); The air intake regulating joint (4) comprises a fixed air intake regulating member (1.1) and an air intake knob (1.2) rotatably arranged on the air intake regulating member (1.1); an abutting protrusion (2.1) is spirally arranged on the inner wall of the air intake regulating member (1.1); an air intake channel (2.2) connected to the foaming tube group (3) is formed on the air intake knob (1.2); the air intake channel (2.2) gradually increases in size along the air intake direction; the abutting protrusion (2.1) abuts against the air intake channel (2.2); and the air intake knob (1.2) rotates to adjust the size of the output port diameter of the air intake channel (2.2).

2. The air intake regulating structure of the coffee machine milk box according to claim 1, characterized in that: The foaming tube group (3) comprises a mixing tube (3.1), a steam inlet tube (3.2), an air inlet tube (3.5), a milk inlet tube (3.3), and a foamed milk discharge tube (3.4); The steam inlet pipe (3.2), the air inlet pipe (3.5), and the milk inlet pipe (3.3) are respectively connected to the input end of the mixing pipe (3.1); the milk inlet pipe (3.3) is connected to the milk foam box (1); and the air inlet pipe (3.5) is connected to the air inlet regulating joint (4).

3. The air intake regulating structure of the coffee machine milk box according to claim 1, characterized in that: A connecting sleeve (1.3) is sleeved on the outer periphery of the air intake regulating member (1.1), the air intake regulating member (1.1) is clamped in the connecting sleeve (1.3), the air intake knob (1.2) is rotated in the connecting sleeve (1.3), and an air outlet (2.3) connected to the foaming tube group (3) is formed on the connecting sleeve (1.3).

4. The air intake regulating structure of the coffee machine milk box according to claim 3, characterized in that: A rotation-stopping protrusion (2.4) is formed on the outer periphery of the air intake regulating member (1.1), and a rotation-stopping groove (2.5) for the rotation-stopping protrusion (2.4) to be placed is formed on the connecting sleeve (1.3).

5. The air intake regulating structure of the coffee machine milk box according to claim 3, characterized in that: A rotating convex portion (2.6) is formed on the air inlet knob (1.2), and a rotating groove (2.7) for the rotating convex portion (2.6) to rotate is formed on the connecting sleeve (1.3).

6. The air intake regulating structure of the coffee machine milk box according to claim 5, characterized in that: A disengagement groove (2.8) communicating with the rotation groove (2.7) is formed on the connecting sleeve (1.3).

7. The air intake regulating structure of the coffee machine milk box according to claim 2, characterized in that: The mixing tube (3.1) comprises a connecting tube (4.1) and an output tube (4.2); the connecting tube (4.1) is inserted into the output tube (4.2); a mixing space (4.3) is formed between the connecting tube (4.1) and the output tube (4.2); and the foamed milk discharge tube (3.4) is connected to the output end of the output tube (4.2).

8. The air intake regulating structure of the coffee machine milk box according to claim 7, characterized in that: The connecting pipe (4.1) is formed with an air inlet (4.4) communicating with the mixing space (4.3), a milk inlet (4.5), and a steam inlet (4.6); the output pipe (4.2) is formed with a first pipe opening (4.7) connected to the milk inlet pipe (3.3), and a second pipe opening (4.8) connected to the air inlet (4.4); the first pipe opening (4.7) is connected to the milk inlet pipe (3.3), the second pipe opening (4.8) is connected to the air inlet pipe (3.5), and the steam inlet pipe (3.2) is inserted into the connecting pipe (4.1) and communicates with the steam inlet (4.6).

9. The air intake regulating structure of the coffee machine milk box according to claim 2, characterized in that: Sealing rings (4.9) are provided in the joint areas of the mixing tube (3.1), the steam inlet tube (3.2), the air inlet tube (3.5), the milk inlet tube (3.3), and the foamed milk discharge tube (3.4).

10. The air intake regulating structure of a coffee machine milk tank according to claim 1, characterized in that: The air intake regulating member (1.1) is made of silica gel.

Images