A steam rod
By designing a first and second nozzle structure that is off-axis on the steam rod, the milk foam making process is simplified, achieving efficient and stable milk foam production and lowering the operational threshold.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEAR ELECTRICAL APPLIANCE CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-05-26
AI Technical Summary
Existing steam milk wands are complicated to operate, requiring precise adjustment of the angle and position of the steam wand and the milk, resulting in unstable milk foam quality and a high barrier to entry for users.
Design a steam wand with a combination of a first nozzle and a second nozzle. The first nozzle is offset from the axis of the wand, and the second nozzle drives the milk to rotate, generating a vortex to cut the milk foam, thus simplifying the operation process.
It achieves efficient milk foaming and cotton-like foaming simultaneously, ensuring stable milk foam quality, reducing operational difficulty, and improving user experience.
Smart Images
Figure CN224269002U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coffee machine technology, and in particular to a steam wand. Background Technology
[0002] A steam milk wand is a device in a coffee machine used to froth milk. Operating a steam milk wand is relatively complex; it requires constant observation of the actual effect of the steam impacting the milk and adjustments to the operating technique as needed.
[0003] For example, in the typical process of using a steam milk wand to froth milk, the nozzle needs to be positioned a short distance below the milk. Steam then blows out of the milk, creating foam as the steam is drawn into the milk and impacts it. Once enough foam has been produced, the nozzle is moved downwards to heat the milk to the desired temperature using the steam. Throughout this process, the steam wand needs to be tilted at an angle to the milk surface to create a vortex through the steam's impact. This relatively high skill ceiling can lead to inconsistent quality of the froth and discourage users from using the product.
[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content
[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a steam wand to simplify the preparation of milk foam.
[0006] The technical solution of this utility model is as follows:
[0007] A steam rod, the steam rod comprising:
[0008] A rod body with steam holes connected to a steam source; the surface of the rod body furthest from the steam source is the bottom surface, and the surface of the rod body closest to the steam source is the top surface; the surface of the rod body between the top surface and the bottom surface is the side surface.
[0009] A first nozzle is formed on the rod body; the first nozzle connects the steam hole and the side surface.
[0010] A second nozzle is formed on the rod body; the second nozzle connects the steam hole and the side surface.
[0011] The second nozzle is located on the side of the first nozzle near the bottom surface; the axis of the second nozzle is offset from the axis of the rod.
[0012] A further technical solution is that the axis of the first spray hole is offset from the axis of the rod; the direction of the offset of the axis of the first spray hole relative to the axis of the rod is the same as the direction of the offset of the axis of the second spray hole relative to the axis of the rod.
[0013] A further technical solution is that, around the axis of the rod, at least two first spray holes and second spray holes are uniformly opened circumferentially on the rod.
[0014] A further technical solution is that, along the axial direction of the rod, the distance between the orifice of the first spray hole and the orifice of the second spray hole is between 0.5 and 0.7 cm.
[0015] A further technical solution is that the orifice of the first spray hole is an elliptical orifice, and the major axis of the elliptical orifice of the first spray hole is set parallel to the axis of the rod.
[0016] A further technical solution is that the channel of the second nozzle is an arc-shaped channel; the axis of the channel at the opening of the second nozzle is offset from the axis of the rod.
[0017] A further technical solution is that a chamfer is provided between the side surface and the bottom surface; the opening of the second spray hole is formed on the chamfer.
[0018] A further technical solution is that, moving away from the axis of the rod, the first nozzle gradually approaches the bottom surface; the angle between the channel of the first nozzle and the axis of the rod is 70°.
[0019] A further technical solution is that a ball head is provided on the top surface of the rod; a ball socket is provided on the steam source; and the rod is spherically hinged to the steam source through the ball head and the ball socket.
[0020] A further technical solution is that a connecting segment extends from the top surface of the rod; the diameter of the connecting segment is smaller than the diameter of the rod; and the end of the connecting segment away from the rod is connected to the ball head.
[0021] The beneficial technical effects of this utility model are as follows:
[0022] (1) The steam wand of this invention sprays steam through a first nozzle and a second nozzle to whip and fluff the milk. The first nozzle is positioned above the second nozzle, and the axis of the second nozzle is offset from the axis of the wand. When the first nozzle is moved to the whipping position, it sprays steam. The steam from the first nozzle approaches the surface of the milk, drawing in air and creating milk foam. Simultaneously, the steam from the second nozzle, offset from the axis of the wand, drives the milk to rotate around the wand, creating a vortex that cuts the milk foam and fluffs it. That is, while creating milk foam, the vortex generated by the milk cuts the milk foam into micron-sized bubbles. When making the milk foam layer with the steam wand of this application, the whipping and fluffing steps are performed simultaneously, improving the efficiency of milk foam layer production. Furthermore, there is no need to adjust the position of the steam wand. Compared to adjusting the wand to a specific angle with the milk, inserting the wand vertically into the milk is easier to operate. This greatly simplifies the milk foam production process and lowers the barrier to entry for using the steam wand.
[0023] (2) Furthermore, the axis of the first nozzle is offset from the axis of the rod body, and the offset direction is the same as that of the second nozzle. This avoids the steam ejected from the first nozzle from colliding with the vortex generated by the milk driven by the second nozzle, thus preventing turbulence and ensuring the quality of cotton beating.
[0024] (3) Furthermore, at least two of each of the first and second nozzles are provided, and they are evenly distributed around the circumference of the rod. This eliminates the problem of liquid surface tilting caused by unilateral steam impact and improves the quality of the produced milk foam. Attached Figure Description
[0025] Figure 1 A front view structural schematic diagram of a steam rod according to an embodiment of the present disclosure is shown.
[0026] Figure 2 A partially enlarged view of the steam rod at point A according to an embodiment of the present disclosure is shown.
[0027] Figure 3 A cross-sectional view of a steam rod at point B, according to an embodiment of the present disclosure, is shown.
[0028] Marked in the attached diagram:
[0029] 1. Rod body; 11. Ball head; 12. Connecting section; 13. Top surface; 14. Side surface; 141. Chamfer; 15. Bottom surface; 2. Steam hole; 3. First nozzle; 4. Second nozzle. Detailed Implementation
[0030] To make the objectives, features, and advantages of this utility model more apparent and understandable, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the implementation conditions of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.
[0031] In the description of this utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0032] The steam wand includes a body 1 with steam holes 2 connected to a steam source. The surface of the body 1 furthest from the steam source is the bottom surface 15, and the surface of the body 1 closest to the steam source is the top surface 13. The surface of the body 1 between the top surface 13 and the bottom surface 15 is the side surface 14. A first nozzle 3 is located on the body 1, connecting the steam hole 2 and the side surface 14. A second nozzle 4 is located on the body 1, near the bottom surface 15 of the first nozzle 3. The axis of the second nozzle 4 is offset from the axis of the body 1. When the first nozzle 3 is moved to the frothing position, steam is emitted. The steam emitted from the first nozzle 3 approaches the surface of the milk, entraining air and creating milk foam. Simultaneously, the steam emitted from the second nozzle 4, offset from the axis of the body 1, drives the milk to rotate around the body 1, creating a vortex that cuts the milk foam, thus frothing it. In other words, while creating milk foam, the vortex generated by the milk cuts the foam into micron-sized bubbles. The steam wand of this application allows for simultaneous whipping and frothing of milk foam, improving the efficiency of foam creation. Furthermore, it eliminates the need to adjust the position of the steam wand; compared to adjusting the angle between the wand and the milk, inserting the wand vertically into the milk is easier, greatly simplifying the foam-making process and lowering the barrier to entry for using the steam wand. Even after the steam source stops outputting steam, if some newly formed milk foam remains large, the vortex generated in the milk has not yet stopped; the inertia of the vortex is used to finely cut this portion of foam.
[0033] The axis of the first nozzle 3 is offset from the axis of the rod 1. The direction of the offset of the axis of the first nozzle 3 relative to the axis of the rod 1 is the same as the direction of the offset of the axis of the second nozzle 4 relative to the axis of the rod 1. This avoids the steam ejected from the first nozzle 3 from interfering with the vortex generated by the milk driven by the second nozzle 4, thus preventing turbulence and ensuring the quality of cotton beating.
[0034] Preferably, the orifice of the first nozzle 3 is elliptical, with the major axis of the elliptical orifice parallel to the axis of the rod body 1. The elliptical orifice elongates the first nozzle 3, increasing the vertical diameter of the steam ejected from the first nozzle 3, making it easier for the user to adjust the position of the first nozzle 3 and allow the steam ejected from the first nozzle 3 to be entrained in air, thereby simplifying the use of the steam rod of this application.
[0035] More preferably, the first nozzle 3 gradually approaches the bottom surface 15 in a direction away from the axis of the rod 1. The angle between the channel of the first nozzle 3 and the axis of the rod 1 is 70°. This prevents the axis of the first nozzle 3 from shifting upwards when the user adjusts the angle of the steam rod at a small angle, thus avoiding milk splashing caused by the ejected steam.
[0036] Around the axis of the rod 1, at least two first nozzles 3 and second nozzles 4 are evenly spaced circumferentially on the rod 1. This is to eliminate the problem of liquid surface tilting caused by unilateral steam impact and improve the quality of the milk foam produced.
[0037] Preferably, along the axial direction of the rod body 1, the distance between the opening of the first nozzle 3 and the opening of the second nozzle 4 is between 0.5 and 0.7 cm. When creating the milk foam layer, this location of the second nozzle 4 prevents the steam it emits from entraining air. It also prevents the second nozzle 4 from being too far from the surface of the milk, which would cause the vortex created by the second nozzle 4 to form a hidden current below the milk foam layer. If this hidden current does not directly contact the milk foam layer, it cannot effectively cut the milk foam, resulting in larger and coarser milk foam. Limiting the distance between the first nozzle 3 and the second nozzle 4 ensures the quality of the foaming process.
[0038] The channel of the second nozzle 4 is an arc-shaped channel. The axis of the channel at the orifice of the second nozzle 4 is offset from the axis of the rod 1. The arc-shaped channel offsets the axis of the orifice of the second nozzle 4. The arc-shaped channel design has a stronger buffering capacity against local stress, and its streamlined structure has less resistance, which facilitates the ejection of steam.
[0039] Preferably, a chamfer 141 is provided between the side surface 14 and the bottom surface 15. The orifice of the second nozzle 4 is opened on the inclined chamfer 141, so that the orifice of the second nozzle 4 is elliptical or elongated, which facilitates the diffusion of the steam ejected from the second nozzle 4.
[0040] A ball head 11 is provided on the top surface 13 of the rod body 1. A ball socket is provided on the steam source. Through the ball head 11 and the ball socket, the rod body 1 is spherically hinged to the steam source, realizing the angle adjustment and 360° rotation of the rod body 1, thereby improving the flexibility of the rod body 1.
[0041] Preferably, a connecting segment 12 extends from the top surface 13 of the rod body 1. The diameter of the connecting segment 12 is smaller than the diameter of the rod body 1. The end of the connecting segment 12 away from the rod body 1 is connected to the ball head 11. The small-diameter connecting segment 12 reduces the interference area between the connecting segment 12 and the ball head, further improving the flexibility of the rod body 1.
[0042] The specific workflow of this utility model is as follows:
[0043] Adjust the angle of rod 1 around the steam source, ensuring the angle between rod 1 and the vertical direction is within 20°. Move the container containing milk, submerging rod 1 until the first nozzle 3 is 0.3 cm below the milk surface. Activate the steam source; steam is injected into the milk through steam hole 2, the first nozzle 3, and the second nozzle 4. The steam from the first nozzle 3 pushes the milk aside, directly contacting and entraining air into the milk, continuously generating milk foam. Simultaneously, the steam from the second nozzle 4 drives the milk to rotate around rod 1, creating a vortex. The vortex continuously breaks large milk bubbles into micron-sized bubbles. Continue until the milk foam layer is thick enough, completing the milk foam layer creation.
[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0045] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A steam rod, characterized in that, The steam rod includes: A rod body with steam holes connected to a steam source; the surface of the rod body furthest from the steam source is the bottom surface, and the surface of the rod body closest to the steam source is the top surface; the surface of the rod body between the top surface and the bottom surface is the side surface. A first nozzle is formed on the rod body; the first nozzle connects the steam hole and the side surface. A second nozzle is formed on the rod body; the second nozzle connects the steam hole and the side surface; wherein the second nozzle is formed on the side of the first nozzle near the bottom surface; the axis of the second nozzle is offset from the axis of the rod body.
2. The steam rod as described in claim 1, characterized in that: The axis of the first nozzle is offset from the axis of the rod; the direction of the offset of the axis of the first nozzle from the axis of the rod is the same as the direction of the offset of the axis of the second nozzle from the axis of the rod.
3. The steam rod as described in claim 1, characterized in that: Around the axis of the rod, at least two first spray holes and second spray holes are uniformly opened circumferentially on the rod.
4. The steam rod as described in claim 1, characterized in that: Along the axial direction of the rod, the distance between the orifice of the first spray hole and the orifice of the second spray hole is between 0.5 and 0.7 cm.
5. The steam rod as described in claim 1, characterized in that: The orifice of the first spray hole is elliptical, and the major axis of the elliptical orifice of the first spray hole is parallel to the axis of the rod.
6. The steam rod as described in claim 1, characterized in that: The second nozzle has an arc-shaped channel; the axis of the channel at the opening of the second nozzle is offset from the axis of the rod.
7. The steam rod as described in claim 1, characterized in that: A chamfer is provided between the side surface and the bottom surface; the opening of the second spray hole is formed on the chamfer.
8. The steam rod as described in claim 1, characterized in that: Moving away from the axis of the rod, the first nozzle gradually approaches the bottom surface; the angle between the channel of the first nozzle and the axis of the rod is 70°.
9. The steam rod as described in claim 1, characterized in that: A ball head is provided on the top surface of the rod; a ball socket is provided on the steam source; the rod is spherically hinged to the steam source through the ball head and the ball socket.
10. The steam rod as described in claim 9, characterized in that: A connecting section extends from the top surface of the rod; the diameter of the connecting section is smaller than the diameter of the rod; the end of the connecting section away from the rod is connected to the ball head.