Temperature-controlled steam lollipop

Abstract

The present application relates to temperature control steam milk stick, including temperature sensing shell, inside open connection temperature sensing cavity of steam source; Temperature sensing cavity is opened and built-in temperature sensing device on jet hole; Temperature sensing device extends temperature sensing cavity; Sleeve, open setting has air cavity; Temperature sensing cavity is arranged in air cavity; Sleeve is also opened and is communicated with air cavity; Adjusting cylinder, setting is in the outer surface of sleeve; Adjusting cylinder is opened and is communicated with air inlet of charging hole; Adjusting head, rotatably extend into adjusting cylinder, adjusting head is opened and is communicated with air inlet of gradually changing recess; Along the rotation direction of adjusting head, the width of gradually changing recess gradually changes; Charging hole is communicated with the external environment of sleeve along the air inlet and gradually changing recess in series. The present application obtains the temperature of milk by temperature sensing device while beating milk foam, so as to stop outputting steam when the temperature of milk is suitable, reduce the operation threshold of beating milk foam and guarantee the quality of milk foam.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more particularly to a temperature-controlled steam milk bar. Background Technology

[0002] Existing coffee machines have milk frothing devices installed at the steam pipe location. These devices spray high-pressure steam, which entrains air and impacts the milk to form milk foam.

[0003] High-pressure steam continuously heats the milk while frothing it, and the temperature of the milk foam needs to be controlled between 55 and 65°C to allow for appropriate denaturation of the whey proteins while preventing excessive denaturation. Traditional milk frothing devices require users to judge the temperature of the milk foam by the sound of the steam, demanding a high level of skill. Ordinary users can easily allow the milk temperature to be below 55°C or above 65°C, resulting in insufficient protein denaturation, failure to fully release the milk's aroma, or excessive denaturation producing a cooked taste, thus affecting the quality of the milk foam.

[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. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a temperature-controlled steam milk wand to monitor the temperature of milk while frothing it.

[0006] The technical solution of the present invention is as follows: Temperature-controlled steam milk sticks include: The temperature-sensing outer shell has a temperature-sensing cavity inside that is connected to a steam source; the temperature-sensing cavity has a jet hole and a built-in temperature-sensing device; the temperature-sensing device extends out of the temperature-sensing cavity. The sleeve has an opening with an air chamber; the temperature sensing chamber is located inside the air chamber; the sleeve also has an inflation hole that connects to the air chamber. An adjusting cylinder is provided on the outer surface of the sleeve; an air inlet passage is provided on the adjusting cylinder, which connects to the inflation hole; An adjusting head is rotatably inserted into an adjusting cylinder. A gradually changing groove is formed on the adjusting head, which connects to the air intake passage. The width of the gradually changing groove gradually changes along the rotation direction of the adjusting head. An air inlet is connected to the external environment of the sleeve along the series air intake passage and the gradually changing groove.

[0007] A further technical solution is that the temperature sensing shell includes an upper temperature sensing shell and a lower temperature sensing shell; the upper temperature sensing shell is open at one end and its outer diameter is reduced to form an annular upper stop section; the lower temperature sensing shell is open at one end and its inner diameter is increased to form an annular lower stop section; the lower stop section is fitted onto the upper stop section.

[0008] A further technical solution is that the outer surface of the upper stop section is circumferentially concave to form an annular groove; the inner surface of the lower stop section is circumferentially convex to form an annular flange; the annular flange is engaged in the annular groove.

[0009] A further technical solution includes a steam pipe; the steam pipe extends into the temperature sensing chamber and has a nozzle; an upper sealing ring is also provided inside the temperature sensing chamber; the upper sealing ring separates the temperature sensing chamber; the temperature sensing device and the steam pipe pass through the upper sealing ring; the nozzle is located on the side of the upper sealing ring near the nozzle.

[0010] A further technical solution is that a temperature sensing hole is also provided on the temperature sensing shell; the temperature sensing device extends out of the temperature sensing cavity along the temperature sensing hole; a lower sealing ring is also fitted on the temperature sensing device; the lower sealing ring is located between the temperature sensing device and the temperature sensing hole.

[0011] A further technical solution is that an elastic element is also fitted on the temperature sensing device; the elastic element is disposed between the upper sealing ring and the lower sealing ring; a temperature sensing limiting ring is provided by expanding the outer diameter of the part of the temperature sensing device disposed in the temperature sensing cavity; a sealing limiting ring is provided by expanding the outer diameter of the part of the lower sealing ring disposed in the temperature sensing cavity; the outer diameter of the temperature sensing limiting ring and the sealing limiting ring is greater than the diameter of the temperature sensing hole.

[0012] A further technical solution is that the gradient groove includes a first radial gradient groove and a second radial gradient groove; an air intake groove is formed on the outer surface of the adjusting head; the air intake groove includes an axial groove and a first radial gradient groove; the axial groove is set along the axis of the adjusting head and connects to the external environment; the air intake passage connects to the first radial gradient groove.

[0013] A further technical solution is that the adjusting head is close to the end of the sleeve, and a spiral protrusion is provided spirally extending around the axis of the adjusting head; the spiral protrusion contacts the sleeve, and a second radial gradient groove is formed between the spiral protrusion and the sleeve; the second radial gradient groove connects the inflation port and the air inlet; the inflation port is indirectly connected to the air inlet along the second radial gradient groove.

[0014] A further technical solution includes a tube body; the inner diameter of one end of the tube body is expanded to form a temperature-sensing outer shell.

[0015] A further technical solution is that the sleeve includes a fixed sleeve and a detachable sleeve that are separately set; the fixed sleeve is fixedly connected to the pipe body; one of the fixed sleeve and the detachable sleeve is provided with an external thread, and the other is provided with an internal thread for threaded connection.

[0016] The beneficial technical effects of the present invention are as follows: (1) When frothing milk with the temperature-controlled steam milk wand of the present invention, the open end of the air chamber and the temperature sensing device are inserted below the surface of the milk, while the air jet and the air filling hole are kept above the surface of the milk. In this way, the milk foam is generated in the open air chamber, and the opening of the air chamber is set to facilitate cleaning by the user. The user can obtain the temperature of the milk while frothing milk through the temperature sensing device, so as to stop the output of steam when the milk temperature is suitable, thereby reducing the operation threshold of frothing milk and ensuring the quality of milk foam. Moreover, the temperature sensing device and the air jet are integrated in the temperature sensing chamber, which makes it easy for the temperature sensing device to detect the temperature of the core area of ​​milk frothing milk and reduce temperature measurement deviation. In addition, an adjustment head is also provided at the air filling hole. By rotating the adjustment head, the cross-sectional area of ​​the air flow between the gradient groove and the air inlet can be changed, thereby adjusting the amount of air entering the air chamber and the amount of air entrained into the milk with the steam, fine-tuning the number and size of the milk foam generated, and optimizing the milk frothing effect.

[0017] (2) Furthermore, the upper and lower temperature sensing shells are connected by the upper and lower stop sections, which makes disassembly and assembly convenient and facilitates the cleaning and maintenance of the temperature sensing cavity.

[0018] (3) Furthermore, an upper sealing ring, a lower sealing ring, and an elastic element are provided inside the temperature sensing chamber. The upper sealing ring fixes the temperature sensing device and the steam pipe; the lower sealing ring seals the gap between the temperature sensing hole and the temperature sensing device, preventing milk from entering and contaminating the temperature sensing chamber; one end of the elastic element abuts against the upper sealing ring, and the other end abuts against the temperature sensing device and the lower sealing ring, fixing the upper sealing ring, the lower sealing ring, and the temperature sensing device, improving the stability of the steam pipe and the temperature sensing device, and improving the sealing performance of the temperature sensing hole. Attached Figure Description

[0019] Figure 1 A three-dimensional structural schematic diagram of a temperature-controlled steam milk bar according to an embodiment of the present disclosure is shown.

[0020] Figure 2 A vertical cross-sectional schematic diagram of a temperature-controlled steam milk bar according to an embodiment of the present disclosure is shown.

[0021] Figure 3 A partially enlarged view of a temperature-controlled steam milk bar at point A, according to an embodiment of the present disclosure, is shown.

[0022] Figure 4 An exploded view of the adjusting sleeve, fixing sleeve, adjusting head, and protective sleeve in a temperature-controlled steam milk bar according to an embodiment of the present disclosure is shown.

[0023] Figure 5 An exploded structural diagram of a temperature-controlled steam milk bar according to an embodiment of the present disclosure is shown.

[0024] Marked in the attached diagram: 1. Pipe body; 11. Steam pipe; 111. Nozzle; 12. Temperature sensing shell; 121. Temperature sensing chamber; 122. Upper temperature sensing shell; 123. Upper stop section; 124. Annular groove; 125. Lower temperature sensing shell; 126. Air jet hole; 127. Lower stop section; 128. Annular flange; 129. Temperature sensing hole; 13. Upper sealing ring; 14. Elastic element; 15. Lower sealing ring; 151. Sealing limit ring; 16. Temperature sensing device; 161. Temperature sensing limit ring; 2. Sleeve; 21. Fixed sleeve; 22. Removable sleeve; 23. Air chamber; 24. Air filling hole; 3. Adjusting cylinder 31. Cylinder body; 311. Inner positioning groove; 312. Outer retaining groove; 32. Adjusting sleeve; 321. Outer positioning block; 322. Top air inlet groove; 323. Air inlet channel; 324. Air inlet hole; 325. Waist air inlet groove; 326. Bottom air inlet groove; 4. Fixing sleeve; 41. Inner retaining block; 5. Adjusting head; 51. Gradient groove; 511. Air inlet groove; 512. Axial groove; 513. First radial gradient groove; 514. Spiral protrusion; 515. Second radial gradient groove; 52. Limiting block; 53. Radial flange; 54. Axial positioning step; 6. Protective sleeve. Detailed Implementation

[0025] To make the objectives, features, and advantages of this invention more apparent and understandable, please refer to the accompanying drawings. It should be understood 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 invention. They are not intended to limit the implementation conditions of the invention 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 the invention, should still fall within the scope of the technical content disclosed in this invention.

[0026] In the description of this invention, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 limiting this invention.

[0027] Figure 1 A three-dimensional structural schematic diagram of a temperature-controlled steam milk bar according to an embodiment of the present disclosure is shown. Figure 2 A vertical cross-sectional schematic diagram of a temperature-controlled steam milk bar according to an embodiment of the present disclosure is shown. Figure 3 A partially enlarged view of a temperature-controlled steam milk bar at point A, according to an embodiment of the present disclosure, is shown. Figure 4An exploded view of the adjusting sleeve, fixing sleeve, adjusting head, and protective sleeve in a temperature-controlled steam milk stick according to an embodiment of this disclosure is shown. Please refer to... Figure 1 , Figure 2 , Figure 3 and Figure 4 The temperature-controlled steam milk dispenser includes a temperature-sensing outer shell 12, a sleeve 2, an adjusting cylinder 3, and an adjusting head 5. A temperature-sensing cavity 121, connected to a steam source (not shown), is formed inside the temperature-sensing outer shell 12. An air jet 126 is formed on the temperature-sensing cavity 121, and a temperature-sensing device 16 is built into it. In some embodiments, the temperature-sensing device 16 can be an NTC negative temperature coefficient thermistor known in the prior art; this application does not limit the type of temperature-sensing device 16. The temperature-sensing device 16 extends out of the temperature-sensing cavity 121. An air chamber 23 is provided on the sleeve 2. The temperature-sensing cavity 121 is disposed within the air chamber 23. An air inlet 24 communicating with the air chamber 23 is also formed on the sleeve 2. When frothing milk, the open end of the air chamber 23 and the temperature-sensing device 16 are inserted below the surface of the milk, while the air jet 126 and the air inlet 24 remain above the surface of the milk. The steam ejected along the air jet 126 impacts the milk and entrains air entering through the air inlet 24, producing milk foam. Milk foam is generated within the open air chamber 23, which is designed for easy cleaning by the user. The user can obtain the milk temperature while frothing milk using the temperature sensing device 16, allowing them to stop steam output when the milk temperature is suitable, thus lowering the operational threshold for frothing milk and ensuring milk foam quality. Furthermore, the temperature sensing device 16 and the air jet 126 are integrated into the temperature sensing chamber 121, facilitating the temperature sensing device 16 to detect the temperature of the core frothing area and reducing temperature measurement deviation. The adjusting cylinder 3 is located on the outer surface of the sleeve 2. The adjusting cylinder 3 and the sleeve 2 can be a single unit or separate units joined by bonding or welding; this application does not impose any limitations on this. The adjusting cylinder 3 has an air inlet 323 communicating with the air inlet 24. The adjusting head 5 rotatably extends into the adjusting cylinder 3, and the adjusting head 5 has a gradually changing groove 51 communicating with the air inlet 323. The width of the gradually changing groove 51 gradually changes along the rotation direction of the adjusting head 5. The air inlet 24 connects to the external environment of the sleeve 2 via the series-connected air inlet 323 and the gradient groove 51. By rotating the adjustment head 5, the cross-sectional area of ​​the airflow between the gradient groove 51 and the air inlet 323 can be changed, thereby adjusting the amount of air entering the air chamber 23 and the amount of air entrained into the milk with the steam, fine-tuning the number and size of the milk foam produced, and optimizing the milk frothing effect.

[0028] Please refer to Figure 2 and Figure 3The temperature-sensing housing 12 includes an upper temperature-sensing housing 122 and a lower temperature-sensing housing 125. The upper temperature-sensing housing 122 has an open end and a reduced outer diameter, forming an annular upper stop section 123. The lower temperature-sensing housing 125 has an open end and an increased inner diameter, forming an annular lower stop section 127. When connecting the upper temperature-sensing housing 122 and the lower temperature-sensing housing 125, the lower stop section 127 is fitted onto the upper stop section 123, and the upper temperature-sensing housing 122 and the lower temperature-sensing housing 125 are connected by a stop structure. The lower stop section 127 and the upper stop section 123 are interference-fitted; when the lower stop section 127 and the upper stop section 123 are inserted, the structure undergoes a slight elastic deformation, thus securing the upper temperature-sensing housing 122 and the lower temperature-sensing housing 125.

[0029] Preferably, the outer surface of the upper stop section 123 is circumferentially concave to form an annular groove 124. The inner surface of the lower stop section 127 is circumferentially convex to form an annular flange 128. When the upper temperature sensing shell 122 and the lower temperature sensing shell 125 are connected by the stop structure, the annular flange 128 is engaged in the annular groove 124, which enhances the strength, stability and sealing performance of the connection between the upper temperature sensing shell 122 and the lower temperature sensing shell 125.

[0030] Please refer to Figure 2 and Figure 3 It also includes a steam pipe 11. The steam pipe 11 extends along the pipe body 1 into the temperature sensing chamber 121 and has a nozzle 111. An upper sealing ring 13 is also provided inside the temperature sensing chamber 121. The upper sealing ring 13 separates the temperature sensing chamber 121 to prevent foreign objects from entering the pipe body 1. The temperature sensing device 16 and the steam pipe 11 are supported by passing through the upper sealing ring 13. The nozzle 111 is located on the side of the upper sealing ring 13 near the nozzle 126.

[0031] Preferably, the temperature sensing housing 12 is further provided with a temperature sensing hole 129. The temperature sensing device 16 extends out of the temperature sensing cavity 121 along the temperature sensing hole 129. A lower sealing ring 15 is also fitted onto the temperature sensing device 16. The lower sealing ring 15 is disposed between the temperature sensing device 16 and the temperature sensing hole 129 to seal the gap between the temperature sensing device 16 and the temperature sensing hole 129.

[0032] More preferably, an elastic element 14 is also sleeved on the temperature sensing device 16. In some embodiments, the elastic element 14 may be a metal spring known in the prior art, such as a truncated cone helical spring, and this application is not limited to this. The elastic element 14 is disposed between the upper sealing ring 13 and the lower sealing ring 15. One end of the elastic element 14 abuts against the upper sealing ring 13, and the other end abuts against the temperature sensing device 16 and the lower sealing ring 15, fixing the upper sealing ring 13, the lower sealing ring 15 and the temperature sensing device 16, improving the stability of the steam pipe 11 and the temperature sensing device 16, and improving the sealing performance of the temperature sensing hole 129. Specifically, the elastic element 14 pushes the upper sealing ring 13 in the narrow diameter direction of the pipe body 1, thereby fixing the position of the upper seal.

[0033] The temperature sensing device 16 is located within the temperature sensing cavity 121, with a portion of its outer diameter expanded to form a temperature-sensing limiting ring 161, which abuts against an elastic element. The lower sealing ring 15 is also located within the temperature sensing cavity 121, with a portion of its outer diameter expanded to form a sealing limiting ring 151. The outer diameters of both the temperature-sensing limiting ring 161 and the sealing limiting ring 151 are greater than the diameter of the temperature sensing hole 129. The elastic element 14 indirectly pushes the sealing limiting ring 151 through the temperature-sensing limiting ring 161, causing the sealing limiting ring 151 to abut against the lower temperature sensing shell 125 and seal the temperature sensing hole 129.

[0034] Figure 5 An exploded structural diagram of a temperature-controlled steam milk bar according to an embodiment of this disclosure is shown. Please refer to... Figure 2 , Figure 4 and Figure 5 The gradient groove 51 includes a first radial gradient groove 513 and a second radial gradient groove 515. An air intake groove 511 is formed on the outer surface of the adjusting head 5. The air intake groove 511 includes an axial groove 512 and a first radial gradient groove 513. The axial groove 512 is arranged along the axis of the adjusting head 5 and connects to the external environment. The air intake passage 323 connects to the first radial gradient groove 513, indirectly connecting to the external environment through the first radial gradient groove 513. By rotating the adjusting sleeve 32, the air intake passage 323 connects to different width positions of the first radial gradient groove 513, changing the cross-sectional area of ​​airflow between the air intake passage 323 and the first radial gradient groove 513, thereby adjusting the air intake volume of the air chamber 23 and the amount of air entrained into the milk with the steam, adjusting the number and size of the generated milk foam, and optimizing the milk frothing effect.

[0035] Preferably, the adjusting head 5 is located near the end of the sleeve 2, and a spiral protrusion 514 extends spirally around the axis of the adjusting head 5. The spiral protrusion 514 contacts the sleeve 2, and a second radial gradient groove 515 is formed between the spiral protrusion 514 and the sleeve 2. The second radial gradient groove 515 connects the inflation hole 24 and the air inlet 323. The inflation hole 24 is indirectly connected to the air inlet 323 along the second radial gradient groove 515. When the adjusting head 5 is rotated, in addition to the change in the cross-sectional area of ​​the airflow between the air inlet 323 and the first radial gradient groove 513, the cross-sectional area of ​​the airflow between the air inlet 323 and the second radial gradient groove 515 also changes synchronously, making the change in the cross-sectional area of ​​the entire airflow path more uniform, reducing noise during airflow and optimizing the user experience.

[0036] In some embodiments, the adjusting cylinder 3 includes a separate cylinder body 31 and adjusting sleeve 32 to facilitate the processing of the air intake duct 323 and reduce the processing cost of the air intake duct 323. The cylinder body 31 is sleeved on the adjusting sleeve 32. One of the cylinder body 31 and the adjusting sleeve 32 has an inner positioning groove 311, and the other has an outer positioning block 321. The outer positioning block 321 is inserted into the inner positioning groove 311 to restrict the rotational freedom between the cylinder body 31 and the adjusting sleeve 32. The cylinder body 31 and the adjusting head 5 are clearance-fitted to facilitate the flow of air into the axial groove 512. The adjusting head 5 is also radially extended with an axial positioning step 54 that abuts against the adjusting sleeve 32. The end of the adjusting sleeve 32 away from the sleeve 2 has a top air intake groove 322 to create a gap between the adjusting sleeve 32 and the axial positioning step 54. The top air intake groove 322 communicates with the axial groove 512, and air from the external environment flows into the axial groove 512 along the top air intake groove 322.

[0037] Correspondingly, the air intake duct 323 includes a waist-shaped air intake groove 325 formed on the outer surface of the adjusting sleeve 32, an air intake hole 324 connecting the waist-shaped air intake groove 325 and the first radial gradient groove 513, and a bottom air intake groove 326 provided at one end of the adjusting cylinder 3 near the sleeve 2. The bottom air intake groove 326 connects the second radial gradient groove 515 and the waist-shaped air intake groove 325. Air from the external environment enters the air chamber 23 along the axial groove 512, the first radial gradient groove 513, the air intake hole 324, the waist-shaped air intake groove 325, the bottom air intake groove 326, the second radial gradient groove 515, and the air inlet. The waist-shaped air intake groove 325 is formed on the outer surface of the adjusting sleeve 32, which facilitates the processing of the waist-shaped air intake groove 325. In some other embodiments, the cylinder 31 and the adjusting sleeve 32 may also be an integral structure, which is not limited in this application.

[0038] Preferably, a fixing sleeve 4 and a protective sleeve 6 are also provided. The outer surface of the cylinder 31 has an outer groove 312, and the inner surface of the fixing sleeve 4 has an inner locking block 41 that engages with the outer groove 312. The adjusting head 5 passes through the fixing sleeve 4 and extends into the adjusting cylinder 3. The adjusting head 5 has a limit block 52 and a radial flange 53 arranged radially. The radial flange 53 is located on the side of the limit block 52 away from the adjusting cylinder 3, and the end of the fixing sleeve 4 engages between the radial flange 53 and the limit block 52. The protective sleeve 6 is screwed onto the adjusting head 5 and fits over the adjusting head 5 and the fixing sleeve 4, reducing the entry of foreign objects into the connecting structure between the adjusting cylinder 3, the fixing sleeve 4, and the adjusting head 5, thus providing protection.

[0039] Please refer to Figure 2 and Figure 3The device also includes a tube body 1. The inner diameter of one end of the tube body 1 is expanded to form a temperature-sensing outer shell 12. Specifically, an upper temperature-sensing shell 122 is connected to the tube body 1, and a lower temperature-sensing shell 125 is snapped onto the upper temperature-sensing shell 122. A steam pipe 11 extends along the tube body 1 into the temperature-sensing chamber 121. The tube body 1, fitted onto the steam pipe 11, protects the steam pipe 11 and isolates its heat to prevent burns to the user. Additionally, the cable of the wired temperature-sensing device 16 can also extend along the tube body 1 into the temperature-sensing chamber 121. In some embodiments, the tube body 1 and the steam pipe 11 can be flexible pipes such as 304 / 316 stainless steel corrugated pipes, allowing the user to adjust the position of the jet nozzle 126 to accommodate milk at different liquid levels; this application does not impose any limitations on this.

[0040] Preferably, the sleeve 2 includes a fixed sleeve 21 and a detachable sleeve 22, which are separately configured. The fixed sleeve 21 is fixedly connected to the tube 1. One of the fixed sleeve 21 and the detachable sleeve 22 is provided with external threads, and the other is provided with internal threads for threaded connection. The detachable sleeve 22 can be easily removed, facilitating user cleaning and maintenance of the temperature sensing chamber 121. The adjusting cylinder 3 and the air inlet 24 can be located on the detachable sleeve 22. Rotating the detachable sleeve 22 allows for the removal of all components such as the adjusting cylinder 3, the fixed sleeve 4, the adjusting head 5, and the protective sleeve 6, facilitating user cleaning and maintenance.

[0041] The specific workflow of this invention is as follows: When frothing milk, the user adjusts the height of the temperature-controlled steam wand, inserting the open end of the air chamber 23 and the temperature sensing device 16 below the surface of the milk, while keeping the jet nozzle 126 and the air inlet 24 above the milk surface, and then turns on the steam source. High-pressure steam is sprayed onto the milk along the steam pipe 11, the temperature sensing chamber 121, and the jet nozzle 126, and is drawn in by air entering the air chamber 23 through the axial groove 512, the first radial gradient groove 513, the air inlet 324, the waist air inlet groove 325, the bottom air inlet groove 326, the second radial gradient groove 515, and the air inlet. The high-pressure steam heats the milk and froths it. During this process, the temperature sensing device 16 monitors the milk temperature in real time, allowing the user to determine when to stop frothing. During this process, the user can rotate the adjusting head 5 to adjust the cross-sectional area of ​​the airflow passage between the first radial gradient groove 513 and the air inlet 324, as well as the cross-sectional area of ​​the airflow passage between the bottom air inlet groove 326 and the second radial gradient groove 515, thereby disconnecting / increasing / decreasing the amount of air entering the air chamber 23. When there is no air flowing into the air chamber 23, the high-pressure steam only heats the milk. When the amount of air flowing into the chamber changes, the size and number of milk foams formed are also adjusted accordingly.

[0042] 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.

[0043] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A temperature-controlled steam milk stick, characterized in that, The temperature-controlled steam milk bar includes: A temperature-sensing outer shell has a temperature-sensing cavity inside that is connected to a steam source; the temperature-sensing cavity has a jet nozzle and a built-in temperature-sensing device; the temperature-sensing device extends out of the temperature-sensing cavity; A sleeve has an opening with an air cavity; the temperature sensing cavity is located inside the air cavity; the sleeve also has an inflation hole that communicates with the air cavity; An adjusting cylinder is disposed on the outer surface of the sleeve; an air inlet passage communicating with the inflation hole is formed on the adjusting cylinder; An adjusting head is rotatably inserted into the adjusting cylinder, and a gradually changing groove is formed on the adjusting head to connect with the air intake passage; the width of the gradually changing groove gradually changes along the rotation direction of the adjusting head; the inflation port connects to the external environment of the sleeve along the air intake passage and the gradually changing groove.

2. The temperature-controlled steam milk bar as described in claim 1, characterized in that: The temperature-sensing shell includes an upper temperature-sensing shell and a lower temperature-sensing shell; the upper temperature-sensing shell is open at one end and its outer diameter decreases to form an annular upper stop section; the lower temperature-sensing shell is open at one end and its inner diameter increases to form an annular lower stop section; the lower stop section is fitted onto the upper stop section.

3. The temperature-controlled steam milk bar as described in claim 2, characterized in that: The outer surface of the upper stop section is circumferentially concave to form an annular groove; the inner surface of the lower stop section is circumferentially convex to form an annular flange; the annular flange is engaged in the annular groove.

4. The temperature-controlled steam milk bar as described in claim 1, characterized in that: It also includes a steam pipe; the steam pipe extends into the temperature sensing chamber and has a spray hole; an upper sealing ring is also provided inside the temperature sensing chamber; the upper sealing ring separates the temperature sensing chamber; the temperature sensing device and the steam pipe pass through the upper sealing ring; the spray hole is located on the side of the upper sealing ring near the spray hole.

5. The temperature-controlled steam milk bar as described in claim 4, characterized in that: The temperature sensing housing is also provided with a temperature sensing hole; the temperature sensing device extends out of the temperature sensing cavity along the temperature sensing hole; a lower sealing ring is also fitted on the temperature sensing device; the lower sealing ring is disposed between the temperature sensing device and the temperature sensing hole.

6. The temperature-controlled steam milk bar as described in claim 5, characterized in that: The temperature sensing device is also fitted with an elastic element; the elastic element is disposed between the upper sealing ring and the lower sealing ring; a temperature sensing limiting ring is provided on the outer diameter of the portion of the temperature sensing device disposed within the temperature sensing cavity; a sealing limiting ring is provided on the outer diameter of the portion of the lower sealing ring disposed within the temperature sensing cavity; the outer diameter of the temperature sensing limiting ring and the sealing limiting ring is greater than the diameter of the temperature sensing hole.

7. The temperature-controlled steam milk bar as described in claim 1, characterized in that: The gradient groove includes a first radial gradient groove and a second radial gradient groove; an air intake groove is formed on the outer surface of the adjusting head; the air intake groove includes an axial groove and a first radial gradient groove; the axial groove is arranged along the axis of the adjusting head and communicates with the external environment; the air intake passage communicates with the first radial gradient groove.

8. The temperature-controlled steam milk bar as described in claim 7, characterized in that: The adjusting head is located near the end of the sleeve, and a spiral protrusion extends spirally around the axis of the adjusting head; the spiral protrusion contacts the sleeve, and a second radial gradient groove is formed between the spiral protrusion and the sleeve; the second radial gradient groove connects the inflation port and the air inlet; the inflation port is indirectly connected to the air inlet along the second radial gradient groove.

9. The temperature-controlled steam milk bar as described in claim 1, characterized in that: It also includes a tube body; the inner diameter of one end of the tube body is expanded to form the temperature-sensing outer shell.

10. The temperature-controlled steam milk bar as described in claim 9, characterized in that: The sleeve includes a fixed sleeve and a detachable sleeve that are separately configured; the fixed sleeve is fixedly connected to the pipe body; one of the fixed sleeve and the detachable sleeve is provided with an external thread, and the other is provided with an internal thread for threaded connection.

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