Milk digester of coffee machine
By inserting a protective tube into the process hole of the ball head and welding it in, the problem of easy breakage of the temperature probe is solved, the durability and stability of the equipment are improved, and the maintenance cost is reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-04-03
AI Technical Summary
The temperature probe of the milk evaporator in a coffee machine is prone to breakage during frequent disassembly, affecting the normal use of the equipment and increasing maintenance costs.
Insert a protective tube into the process hole of the ball head and weld it to the temperature probe rod. The protective tube protects the temperature probe rod and prevents it from being directly connected to the ball seat.
This enhances the durability of the temperature probe, reduces maintenance costs, ensures normal equipment operation, and extends its service life.
Smart Images
Figure CN224070189U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to coffee machines, and more particularly to a coffee machine milk steamer. Background Technology
[0002] In the field of coffee beverage production, such as Figure 1-3 The milk evaporator shown is an essential component for making milk-based coffee drinks. Its working principle involves using the high-pressure steam generated by the coffee machine. Steam passes through a helical tube 3 welded to the lower end of the ball head 1, which is screwed to a steam pipe 2. Steam is then injected into the milk through a small steam hole 21 at the lower end of the steam pipe 2. To monitor the milk temperature in real time, a temperature probe 4 is embedded in the ball head 1 and the helical tube inside the steam pipe 2. The heat released by the high-temperature steam raises the milk temperature, and the impact of the steam breaks up the milk and mixes it with air, thus forming a fine and dense milk foam, adding a rich texture to the milk-based coffee.
[0003] In daily use, to ensure the hygiene of the milk steamer, it needs to be cleaned at the end of the workday, which requires removing the steam pipe 2. However, during frequent disassembly, the connection between the temperature probe 4 and the ball seat is prone to breakage due to repeated external forces caused by the thin temperature probe 4. This not only affects the normal use of the equipment but also increases maintenance costs and the frequency of parts replacement. Utility Model Content
[0004] To overcome the aforementioned defects or one of the defects in the existing technology, this utility model proposes a milk evaporator for a coffee machine, and the technical solution adopted is as follows:
[0005] A milk evaporator for a coffee machine includes a ball head. A temperature probe lead outlet is provided on the right spherical surface of the ball head. Unlike the prior art, a process hole is provided at the lower end of the ball head, which is connected to the temperature probe lead outlet. A protective tube is inserted into the process hole and is fixedly connected to the ball head by welding. The temperature probe enters the ball head through the protective tube, and its lead is led out from the temperature probe lead outlet.
[0006] Furthermore, the length of the protective tube accounts for more than one-fifth of the length of the temperature probe.
[0007] Furthermore, the temperature probe and the protective tube are firmly fixed together with adhesive.
[0008] Furthermore, an upper end face and a lower end face are machined at the upper and lower ends of the ball head, respectively. A process hole is opened at the center of the lower end face, and the process hole and the outlet of the temperature probe lead are connected to each other at the center of the ball head.
[0009] Furthermore, a bevel is made at the lower end of the process hole, and the first weld reinforcement is located inside the bevel.
[0010] Furthermore, the excess height of the first weld seam does not exceed the planar range of the lower end face.
[0011] Furthermore, at least one steam channel penetrating the upper and lower end faces is opened on the ball head outside the process hole; the upper end of the spiral tube extends outward to form a concave flange, and the ball head is welded to the concave flange at the edge of the concave flange; there is a gap between the concave flange and the lower end face; the lower section of the spiral tube is provided with threads for threaded connection with the steam pipe; the inner diameter of the spiral tube is larger than the outer diameter of the protective tube, so that the steam entering the steam channel can enter the steam pipe through the gap between the spiral tube and the protective tube, and be ejected from the steam fine hole at the lower end of the steam pipe.
[0012] Furthermore, the lower surface of the concave flange is spherical and coplanar with the spherical surface of the ball head.
[0013] Furthermore, the outer diameter of the concave flange is smaller than the diameter of the lower end face, and the excess height of the second weld is located within the range of the lower end face.
[0014] Furthermore, the excess height of the second weld does not exceed the spherical surface area of the ball head.
[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:
[0016] 1. Enhanced durability of the temperature probe: By inserting and welding a protective tube into the process hole of the ball head, the temperature probe enters the ball head through the protective tube, avoiding direct connection between the temperature probe and the ball seat. During frequent disassembly of the steam pipe, the protective tube provides protection, preventing the temperature probe connection from breaking due to repeated external forces, thus enhancing the durability of the temperature probe.
[0017] 2. Reduced operating costs: The temperature probe is less prone to breakage, reducing equipment maintenance costs and the frequency of parts replacement, extending the equipment's lifespan, and lowering the overall operating cost of the coffee machine's milk evaporator.
[0018] 3. Ensure normal equipment operation: This avoids the problem of equipment being unable to monitor milk temperature properly due to broken temperature probes, ensuring the normal operation of the coffee machine's milk evaporator and ensuring the continuous and stable production of milk coffee drinks that meet quality requirements. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of a milk evaporator in an existing coffee machine.
[0020] Figure 2 This is a breakdown diagram of the components of a milk evaporator in an existing coffee machine.
[0021] Figure 3 This is a separate diagram of the components of an existing coffee machine's milk evaporator from another perspective.
[0022] Figure 4 This is a structural schematic diagram of the utility model.
[0023] Figure 5 This is a component separation diagram of the utility model.
[0024] Figure 6 This is a component separation diagram from another perspective of the utility model.
[0025] Figure 7 This is a cross-sectional view of the utility model. Detailed Implementation
[0026] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of facilitating the description of 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.
[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "communication" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0028] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0029] like Figure 4-7The coffee machine milk evaporator shown includes a ball head 1. A temperature probe lead outlet 13 is provided on the right spherical surface of the ball head 1. A process hole 14 is provided at the lower end of the ball head 1, which communicates with the temperature probe lead outlet 13. A protective tube 5 is inserted into the process hole 14 and is fixedly connected to the ball head 1 by welding. A temperature probe 4 enters the ball head 1 through the protective tube 5, and its lead exits from the temperature probe lead outlet 13. By inserting and welding the protective tube into the process hole of the ball head, the temperature probe enters the ball head through the protective tube, avoiding direct connection between the temperature probe and the ball head. During frequent disassembly and reassembly of the steam pipe, the protective tube provides protection, preventing the temperature probe connection from breaking due to repeated external forces, thus enhancing the durability of the temperature probe.
[0030] In another preferred embodiment, the length of the protective tube 5 is more than one-fifth of the length of the temperature probe 4. A sufficiently long protective tube 5 can better wrap and support the temperature probe 4, enhancing its stability during use and reducing the risk of damage caused by external forces.
[0031] In another preferred embodiment, the temperature probe 4 and the protective tube 5 are firmly fixed together by adhesive. This connection method ensures the stability of the temperature probe 4 within the protective tube 5, prevents the temperature probe 4 from shaking or shifting, and guarantees the accuracy and reliability of temperature measurement.
[0032] In another preferred embodiment, an upper end face 11 and a lower end face 12 are machined at the upper and lower ends of the ball head 1, respectively. A process hole 14 is opened at the center of the lower end face, and the process hole 14 and the temperature probe lead outlet 13 are interconnected at the center of the ball head. This design optimizes the internal structural layout of the ball head 1, making the installation of the temperature probe rod 4 and the lead arrangement more reasonable, while improving the overall symmetry and stability of the ball head 1.
[0033] In another preferred embodiment, a bevel 15 is formed at the lower end of the process hole 14, and the first weld reinforcement is located inside the bevel 15. The bevel 15 increases the welding area, improves the strength and sealing of the weld between the protective tube 5 and the ball head 1, and controls the weld reinforcement within the bevel, avoiding interference with other components.
[0034] In another preferred embodiment, the excess height of the first weld does not exceed the planar range of the lower end face 12. This ensures the flatness of the lower end face of the ball head 1, allowing the ball head 1 to fit tightly when assembled with other components, thus improving the accuracy and stability of the assembly.
[0035] In another preferred embodiment, at least one steam channel 16 is formed on the ball head 1, outside the process hole 14, penetrating the upper end face 11 and the lower end face 12; the upper end of the spiral tube 3 extends outward to form a concave flange 31, and the ball head 1 is welded to the concave flange 31 at the edge of the concave flange 31; there is a gap between the concave flange 31 and the lower end face 12; the lower section of the spiral tube 3 is threaded for threaded connection with the steam pipe 2; the inner diameter of the spiral tube 3 is larger than the outer diameter of the protective tube 5, so that the steam entering the steam channel 16 can enter the steam pipe 2 through the gap between the spiral tube 3 and the protective tube 5, and be ejected from the steam fine hole 21 at the lower end of the steam pipe 2. This design ensures smooth steam flow, improves steam transmission efficiency, and thus enhances the effect of milk steaming and milk foam making.
[0036] In another preferred embodiment, the lower surface of the concave flange 31 is spherical and coplanar with the spherical surface of the ball head 1. This design enhances the fit and sealing of the connection between the ball head 1 and the ball head seat, reduces the possibility of steam leakage, and ensures the effective utilization of steam.
[0037] In another preferred embodiment, the outer diameter of the concave flange 31 is smaller than the diameter of the lower end face 12, and the second weld reinforcement is located within the range of the lower end face 12. This makes the welded part structurally compact and neat in appearance, avoids the influence of the weld on the surrounding structure, and improves the overall aesthetics.
[0038] In another preferred embodiment, the second weld reinforcement does not exceed the spherical surface area of the ball head 1. This makes the welded part structurally compact and neat in appearance, avoids the influence of the weld on the surrounding structure, and improves the overall aesthetics.
[0039] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.
[0040] Any aspects of this utility model not described in detail are existing technology or common knowledge in the field.
Claims
1. A coffee machine milk boiler comprising a bulb (1) provided with a temperature probe lead exit opening (13) on the right lateral surface of the bulb (1), characterized in that, The lower end of the ball head (1) is provided with a process hole (14) which is in communication with the temperature probe lead wire guide outlet (13); a protective tube (5) is inserted into the process hole (14), and the protective tube (5) is fixedly connected with the ball head (1) by welding, and the temperature probe (4) enters the interior of the ball head (1) through the protective tube (5), and the lead wire is led out from the temperature probe lead wire guide outlet (13).
2. A milk boiler for a coffee machine according to claim 1, characterized in that, The length of the protective tube (5) is more than one fifth of the length of the temperature probe (4).
3. A milk boiler for a coffee machine according to claim 1, characterized in that, The temperature probe (4) and the protective tube (5) are fixedly connected together by an adhesive.
4. A milk boiler for a coffee machine according to claim 1, characterized in that, The upper and lower ends of the ball head (1) are respectively provided with an upper end face (11) and a lower end face (12), the process hole (14) is provided at the center position of the lower end face, and the process hole (14) is in communication with the temperature probe lead wire guide outlet (13) at the ball center of the ball head.
5. A coffee machine milk boiler as claimed in claim 4, characterized in that, A bevel (15) is provided at the lower end of the process hole (14), and the first weld reinforcement is located inside the bevel (15).
6. A coffee machine milk boiler as claimed in claim 5, characterized in that, The first weld reinforcement does not exceed the plane range of the lower end face (12).
7. A milk boiler for a coffee machine according to claim 4, characterized in that, At least one steam passage (16) which penetrates the upper end face (11) and the lower end face (12) is provided on the ball head (1) outside the process hole (14); the upper end of the screw tube (3) extends outward to form a concave flange (31), the ball head (1) is welded to the concave flange (31) at the edge of the concave flange (31); there is a gap between the concave flange (31) and the lower end face (12); the lower section of the screw tube (3) is provided with a thread for threadedly connecting with the steam pipe (2); the inner diameter of the screw tube (3) is greater than the outer diameter of the protective tube (5), so that the steam entering the steam passage (16) can enter the steam pipe (2) through the gap between the screw tube (3) and the protective tube (5) and be sprayed out from the steam fine hole (21) at the lower end of the steam pipe (2).
8. A coffee machine milk boiler according to claim 7, characterized in that, The lower surface of the concave flange (31) is in the shape of a spherical surface and is coplanar with the spherical surface of the ball head (1).
9. A coffee machine milk boiler as claimed in claim 7, characterized in that, The outer diameter of the concave flange (31) is smaller than the diameter of the lower end face (12), and the second weld reinforcement is located within the range of the lower end face (12).
10. A coffee machine milk boiler as claimed in claim 9, characterized in that, The second weld reinforcement does not exceed the range of the spherical surface of the ball head (1).