Steam spray pipe structure and coffee machine

Abstract

The utility model relates to the technical field of coffee machines, in particular to a steam spray pipe structure, and discloses a coffee machine at the same time. Comprising a steam pipe, a ball head is assembled on the outer wall of the upper end of the steam pipe, an extending end is further arranged at the upper end of the steam pipe, and an adapter connected with the extending end in a sealed mode is arranged in the extending end; an inner pipe is arranged in the steam pipe in a penetrating mode, a first pipe connector is arranged at the lower end of the adapter, and the first pipe connector is connected with the inner pipe. According to the steam spraying pipe structure and the coffee machine, the adapter is arranged in the extending end of the upper end of the steam pipe, and the adapter and the ball head are arranged in the machine body of the coffee machine together, so that the influence on the appearance is avoided; the inner pipe and the steam pipe are fixedly connected through the adapter, the pipe diameter of the steam pipe does not need to be increased, and the inner pipe can be arranged in the steam pipe in a sealed mode through the sealing piece, so that the diameter of an existing steam pipe is compatible, and the market requirement of PFAS laws and regulations is met.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, specifically to a steam nozzle structure, and also discloses a coffee machine. Background Technology

[0002] As people's living standards improve, rich and delicious coffee has become a daily beverage. Among various flavored coffee drinks, milk, as an auxiliary additive, has a significant impact on the taste of coffee, such as espresso with milk foam. Therefore, coffee machines on the market are generally equipped with a frother. The frother uses hot steam to stir the milk in the frothing chamber, incorporating air into the milk to produce even and delicate milk foam while heating.

[0003] For example, Chinese patent CN101703367A discloses a steam pipe structure for a coffee machine, including a steam pipe for foaming, with its two ends connected to the coffee machine body and a steam pipe sheath, respectively. Its structural feature is that the steam pipe and the steam pipe sheath are separate components connected by a sealing ring, with the sealing ring located at the outer end of the steam pipe. The steam pipes in the aforementioned prior art are typically made of Teflon tubing. While Teflon tubing has high thermal stability and non-stick properties, it contains PFAS components that can persist in the environment and are almost non-biodegradable, thus limiting its sale in some markets due to PFAS regulations.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings and deficiencies of the existing technology by providing a steam nozzle structure and coffee machine that is compact, easy to assemble, and meets market regulatory requirements.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] The present invention discloses a steam nozzle structure, comprising a steam pipe, a ball head mounted on the outer wall of the upper end of the steam pipe, an extension end provided at the upper end of the steam pipe, and an adapter sealed and connected thereto within the extension end; an inner pipe is inserted inside the steam pipe, and a first pipe connector is provided at the lower end of the adapter, the first pipe connector being connected to the inner pipe.

[0008] As is known, the lower end of the existing Teflon inner tube is fixed to the outlet end of the steam pipe with a copper hoop, and a sealing ring is set between the Teflon tube and the steam pipe based on the mounting position of the copper hoop. The nozzle is then installed on the outlet end of the steam pipe, while the upper end of the Teflon tube extends into the coffee machine and connects to the steam port.

[0009] The adapter of this utility model is usually made of metal or hard plastic. The adapter is inserted into and fixedly installed in the extension end of the steam pipe. The first pipe joint is machined on the adapter. The first pipe joint connects to the inner pipe, so that the silicone braided inner pipe is fixedly installed in the steam pipe without increasing the diameter of the steam pipe.

[0010] It is understood that the upper end of the adapter is also provided with a second pipe connector, which is used to install the outer pipe. The outer pipe can be fixed on the second pipe connector with a clamp, so that the inner pipe can be connected to the steam output port of the coffee machine through the adapter and the outer pipe.

[0011] Furthermore, since the adapter is made of metal or hard plastic, a seal can be achieved between the adapter and the extension end through an interference fit.

[0012] According to the above scheme, preferably, a sealing element is provided between the outer wall of the adapter and the inner wall of the extension end, and a limiting groove is provided on the outer wall of the adapter, with the sealing element positioned in the limiting groove; the sealing element can form a seal between the upper end of the steam pipe and the coffee machine.

[0013] According to the above scheme, a transverse insertion hole is provided on the upper edge of the extension end, and a pin passes through the insertion hole. The pin abuts against the upper end of the adapter, thereby fixing it in place within the extension end. To facilitate production and reduce processing difficulty, a sealing element is provided between the adapter and the extension end. After the adapter is installed into the extension end, the pin passes through the insertion hole, and the pin limits the upper end of the adapter, preventing the adapter from loosening and coming off the extension end. The pin is usually a U-shaped retaining spring, which is low in cost. After the pin is installed in the insertion hole, it clamps the notched end, preventing the pin from loosening. Of course, this also facilitates subsequent maintenance and replacement.

[0014] According to the above scheme, a constricted step is provided on the inner wall of the connection between the extension end and the steam pipe. The lower end of the first pipe connector cooperates with the constricted step to clamp the inner pipe. The pin abuts against the upper end of the adapter to form a limit. After the first pipe connector is inserted into the inner pipe, it can abut against the constricted step to limit the lower end of the adapter. It can be understood that the pipe connector has a structure with an inverted conical head. The first pipe connector abutting against the constricted step can clamp the silicone braided hose on it, preventing the inner pipe from loosening.

[0015] According to the above scheme, the adapter has an external thread on its outer wall and an internal thread on its inner wall, and the adapter is threadedly connected to the extension end. The adapter is fixedly connected to the extension end by the thread, or the inner tube can be fixedly installed inside the steam pipe.

[0016] According to the above solution, the upper end of the adapter is provided with an end cap, which is fixedly welded to the upper port of the extension end. A laterally extending end cap structure is provided on the outer wall of the adapter, and the end cap is welded to the extension end. The inner tube can also be fixedly arranged in the steam pipe.

[0017] According to the above solution, the present utility model further includes a nozzle. The upper end of the nozzle penetrates into the lower port of the steam pipe, and the nozzle is threadedly connected to the steam pipe. A sealing ring is provided between the outer wall of the nozzle and the inner wall of the steam pipe. The nozzle is provided with air outlet holes, and the lower end of the inner tube is paired with the nozzle to communicate with the air outlet holes. The air outlet holes on the nozzle, the inner tube, and the adapter are sequentially connected and are connected to the steam output port on the coffee machine through an outer tube.

[0018] A coffee machine, including the above steam nozzle structure, further includes an outer tube and a clamp. The upper end of the adapter is provided with a second pipe joint, the second pipe joint penetrates into the outer tube, and the clamp is sleeved on the outer tube to fix it on the second pipe joint. The above ball head is rotatably installed in the inner cavity of the coffee machine, so that the steam pipe can rotate on the coffee machine. In particular, the adapter is arranged on the extension end above the sphere, so that the clamp is arranged inside the coffee machine and does not damage the appearance of the coffee machine.

[0019] For a steam nozzle structure and a coffee machine of the present utility model, the adapter is arranged in the extension end inside the upper end of the steam pipe and is built into the body of the coffee machine together with the ball head, avoiding affecting the appearance; the inner tube is fixedly connected to the steam pipe through the adapter, without increasing the diameter of the steam pipe, and the inner tube can be hermetically arranged in the steam pipe through a sealing member, thereby being compatible with the existing steam pipe diameter and meeting the market requirements of PFAS regulations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall external structure schematic diagram of the present utility model;

[0021] Figure 2 is the sectional structure schematic diagram of Embodiment 1 of the present utility model;

[0022] Figure 3 is the enlarged structure schematic diagram of Part A of Embodiment 1 of the present utility model;

[0023] Figure 4 is the enlarged structure schematic diagram of Part A of Embodiment 2 of the present utility model;

[0024] Figure 5 is the enlarged structure schematic diagram of Part A of Embodiment 3 of the present utility model.

[0025] In the figure:

[0026] 1. Steam pipe; 2. Adapter; 3. Seal; 4. Outer pipe; 101. Extension end; 102. Insertion hole; 11. Ball head; 12. Inner pipe; 13. Pin; 14. Closure step; 15. Nozzle; 16. Air outlet; 21. First pipe joint; 22. Limiting groove; 23. End cap; 24. Clamp; 25. Second pipe joint. Detailed Implementation

[0027] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments.

[0028] Example 1

[0029] like Figure 1-3 As shown, the steam nozzle structure of this utility model includes a steam pipe 1, a ball head 11 is mounted on the outer wall of the upper end of the steam pipe 1, and an extension end 101 is also provided at the upper end of the steam pipe 1. An adapter 2 is provided inside the extension end 101 and is sealed to it. An inner pipe 12 is inserted inside the steam pipe 1, and a first pipe connector 21 is provided at the lower end of the adapter 2. The first pipe connector 21 is connected to the inner pipe 12.

[0030] As is well known, the lower end of the existing Teflon inner tube is fixed to the outlet end of the steam pipe 1 with a copper hoop, and a sealing ring is set between the Teflon tube and the steam pipe 1 based on the mounting position of the copper hoop. Then, the nozzle is installed on the outlet end of the steam pipe 1, while the upper end of the Teflon tube extends into the coffee machine and connects to the steam port.

[0031] This invention replaces existing Teflon tubes with an inner tube 12, which is a silicone braided tube, greatly improving environmental factors.

[0032] The adapter 2 of this utility model is usually made of metal or hard plastic. The adapter 2 is inserted into and fixedly installed in the extension end 101 of the steam pipe 1. The first pipe joint 21 is machined on the adapter 2. The first pipe joint 21 is connected to the inner pipe 12, so that the inner pipe 12 is fixedly installed in the steam pipe 1 without increasing the diameter of the steam pipe 1.

[0033] It is understood that the upper end of the adapter 2 is also provided with a second pipe connector 25, which is used to install the outer pipe 4. The outer pipe 4 can be fixed on the second pipe connector 25 with a clamp 24, so that the inner pipe 12 is connected to the steam output port of the coffee machine through the adapter 2 and the outer pipe 4.

[0034] Furthermore, since the adapter 2 is made of metal or hard plastic, the adapter 2 and the extension end 101 can be sealed by an interference fit.

[0035] Preferably, a sealing element 3 is provided between the outer wall of the adapter 2 and the inner wall of the extension end 101, and a limiting groove 22 is provided on the outer wall of the adapter 2, with the sealing element 3 positioned within the limiting groove 22; the sealing element 3 can form a seal between the upper end of the steam pipe 1 and the coffee machine.

[0036] The extension end 101 has a transverse insertion hole 102 along its upper edge. A pin 13 passes through the insertion hole 102 and abuts against the upper end of the adapter 2, thus fixing it within the extension end 101. To facilitate production and reduce processing difficulty, a sealing element 3 is provided between the adapter 2 and the extension end 101. After the adapter 2 is inserted into the extension end 101, the pin 13 passes through the insertion hole 102, limiting the upper end of the adapter 2 and preventing it from loosening and coming off the extension end 101. The pin 13 is typically a U-shaped retaining spring, which is low in cost. After the pin 13 is inserted into the insertion hole 102, it clamps the notched end, preventing the pin 13 from loosening. This also facilitates subsequent maintenance and replacement.

[0037] A constricted step 14 is provided on the inner wall of the connection between the extension end 101 and the steam pipe 1. The lower end of the first pipe connector 21 cooperates with the constricted step 14 to clamp the inner pipe 12. The pin 13 abuts against the upper end of the adapter 2 to form a limit. After the first pipe connector 21 is inserted into the inner pipe 12, it can abut against the constricted step 14 to limit the lower end of the adapter 2. It can be understood that the pipe connector has a structure with an inverted conical head. The first pipe connector 21 abutting against the constricted step 14 can clamp the silicone braided hose on it and prevent the inner pipe 12 from loosening.

[0038] This utility model also includes a nozzle 15, the upper end of which passes through the lower port of the steam pipe 1 and is threadedly connected to the steam pipe 1. A sealing ring is provided between the outer wall of the nozzle 15 and the inner wall of the steam pipe 1. The nozzle 15 is provided with an air outlet 16, and the lower end of the inner pipe 12 is paired with the nozzle 15 to communicate with the air outlet 16. The air outlet 16, the inner pipe 12, and the adapter 2 on the nozzle 15 are connected in sequence and connected to the steam output port of the coffee machine through the outer pipe 4.

[0039] Of course, the steam pipe 1 is also equipped with a handle. The steam pipe 1 can provide heat insulation, and the handle can further enhance safety and make it convenient for users to adjust the angle of the steam pipe 1.

[0040] A coffee machine, including the aforementioned steam nozzle structure, further includes an outer pipe 4 and a clamp 24. The upper end of the adapter 2 is provided with a second pipe connector 25, which passes through the outer pipe 4. The clamp 24 is fitted onto the outer pipe 4, thereby fixing it to the second pipe connector 25. The aforementioned ball head 11 is rotatably mounted in the inner cavity of the coffee machine, allowing the steam pipe 1 to rotate within the coffee machine. Specifically, the adapter 2 is located on the extension end 101 above the ball head, thus allowing the clamp 24 to be positioned inside the coffee machine without compromising its appearance.

[0041] Example 2

[0042] like Figure 4 As shown, the difference between this embodiment and Embodiment 1 is only that the outer wall of the adapter 2 is provided with an external thread, and the inner wall of the extension end 101 is provided with an internal thread, and the adapter 2 is threadedly connected to the extension end 101. The adapter 2 is fixedly connected to the extension end 101 by the thread, and the inner tube 12 can also be fixedly installed inside the steam pipe 1.

[0043] Example 3

[0044] like Figure 5 As shown, the difference between this embodiment and embodiment 1 is only that the upper end of the adapter 2 is provided with an end cap 23, which is welded and fixed to the upper port of the extension end 101. A transversely extending end cap 23 structure is provided on the outer wall of the adapter 2, and the end cap 23 is welded to the extension end 101. Alternatively, the inner tube 12 can be fixedly installed inside the steam pipe 1.

[0045] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A steam nozzle structure, comprising a steam pipe (1), wherein a ball head (11) is fitted onto the outer wall of the upper end of the steam pipe (1), characterized in that, The upper end of the steam pipe (1) is also provided with an extension end (101), and the extension end (101) is provided with a connector (2) that is sealed and connected to it. The steam pipe (1) is provided with an inner pipe (12), and the lower end of the adapter (2) is provided with a first pipe connector (21), which is connected to the inner pipe (12).

2. The steam nozzle structure according to claim 1, characterized in that, A sealing element (3) is provided between the outer wall of the adapter (2) and the inner wall of the extension end (101), and a limiting groove (22) is provided on the outer wall of the adapter (2), with the sealing element (3) positioned in the limiting groove (22).

3. The steam nozzle structure according to claim 1, characterized in that, The extension end (101) has a transverse opening (102) on its upper edge, and a pin (13) is inserted into the opening (102). The pin (13) abuts against the upper end of the adapter (2) so that it is fixedly installed in the extension end (101).

4. The steam nozzle structure according to claim 3, characterized in that, The inner wall of the extension end (101) where it connects to the steam pipe (1) is provided with a constriction step (14), and the lower end of the first pipe joint (21) cooperates with the constriction step (14) to clamp the inner pipe (12).

5. The steam nozzle structure according to claim 1, characterized in that, The adapter (2) has an external thread on its outer wall and an internal thread on its inner wall. The adapter (2) is threadedly connected to the extension end (101).

6. The steam nozzle structure according to claim 1, characterized in that, The adapter (2) is provided with an end cap (23) at its upper end, and the end cap (23) is welded and fixed to the upper port of the extension end (101).

7. The steam nozzle structure according to claim 1, characterized in that, It also includes a nozzle (15), the upper end of which is inserted into the lower port of the steam pipe (1), and the nozzle (15) is threadedly connected to the steam pipe (1), and a sealing ring is provided between the outer wall of the nozzle (15) and the inner wall of the steam pipe (1); the nozzle (15) is provided with an air outlet (16), and the lower end of the inner tube (12) is paired with the nozzle (15) to communicate with the air outlet (16).

8. A coffee machine comprising the steam jet structure according to any one of claims 1-7, characterized in that, It also includes an outer tube (4) and a clamp (24). The upper end of the adapter (2) is provided with a second pipe joint (25). The second pipe joint (25) passes through the outer tube (4). The clamp (24) is fitted with the outer tube (4) so ​​that it is fixed on the second pipe joint (25).

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