Milk foaming steam pipe

Abstract

The utility model discloses a milk foaming steam pipe which comprises an outer pipe (1), a steam inner pipe (2) arranged in the outer pipe (1) and a spray head (5) arranged at the bottom of the outer pipe (1) and communicated with the steam inner pipe (2), and is characterized in that a connecting cylinder (6) is sleeved on the periphery of the spray head (5), and a limiting boss (62) which is bent and extends inwards is arranged on the edge of the bottom of the connecting cylinder (6). And the connecting cylinder (6) is in threaded connection with the bottom of the outer pipe (1), so that the spray head (5) is clamped between the outer pipe (1) and the limiting boss (62). Compared with the prior art, the spray head of the milk foaming steam pipe is convenient to assemble, disassemble and clean.

Description

TECHNICAL FIELD

[0001] The utility model relates to milk foaming technical field, specifically point to a steam pipe of beating milk. BACKGROUND

[0002] When drinking coffee, the smooth and delicate milk foam added in the coffee can increase the taste and texture of the coffee, and can play a good decoration role, and the milk foam is the product of fine mixing of milk and air.

[0003] There are various structural forms of the device for making milk foam, and the commonly used way is to directly pour cold milk into a cup, and to use a steam nozzle directly connected to a steam pipe to prepare foamed milk. The patent with the application number CN201810609037.2 of the applicant's prior application discloses a steam pipe for beating milk, which comprises an outer pipe, a steam pipe with a steam passage, an air outer pipe with an air passage, a steam nozzle and a spray head. The steam nozzle is provided with a transition steam passage and a transition air passage which are independent of each other, and the steam nozzle is connected to the lower end in the outer pipe. The steam pipe and the air outer pipe are arranged in the outer pipe and inserted on the steam nozzle, and the steam passage and the transition steam passage are in communication, and the air passage and the transition air passage are in communication.

[0004] In addition, in the above-mentioned scheme, in order to facilitate cleaning, the bottom surface of the steam nozzle has a downwardly protruding boss portion, the spray head is made of silicone material, and the spray head is connected to the boss portion through an elastic buckle structure.

[0005] However, the above-mentioned detachable structure uses silicone material interference fit, which is easy to fall off and difficult to install in place after disassembly. INVENTION CONTENTS

[0006] The utility model solves the technical problem that the prior art is provided with a steam pipe for beating milk, which is convenient for assembling and disassembling and cleaning.

[0007] The utility model adopts the technical scheme that a steam pipe for beating milk comprises an outer pipe, a steam inner pipe arranged in the outer pipe, and a spray head mounted at the bottom of the outer pipe and connected with the steam inner pipe, characterized in that: a connecting cylinder is sleeved on the outer periphery of the spray head, the bottom edge of the connecting cylinder has a limiting boss extending inwardly and bent, the connecting cylinder is threadedly connected to the bottom of the outer pipe, so that the spray head is clamped between the outer pipe and the limiting boss.

[0008] In order to facilitate the threaded connection of the connecting cylinder and the outer pipe, the bottom edge of the outer pipe has a connecting ring extending downwardly, the outer periphery wall of the connecting ring has external threads, and the inner periphery wall of the top edge of the connecting cylinder has internal threads which can be threadedly connected with the external threads.

[0009] In order to improve the appearance, the outer peripheral wall of the bottom edge of the outer tube is flush with the outer peripheral wall of the connecting cylinder.

[0010] In order to facilitate the replenishment of air, an air outer tube is arranged in the outer tube, and the nozzle is communicated with the air outer tube.

[0011] In order to avoid water vapor and air leakage, the bottom end of the outer tube is provided with a sealing head, the sealing head is provided with a first perforation and a second perforation arranged at intervals, the bottom end of the steam inner tube is connected with a steam joint, the lower part of the steam joint is arranged in the first perforation and is in sealing cooperation with the first perforation, the bottom end of the air outer tube is connected with an air joint, and the lower part of the air joint is arranged in the second perforation and is in sealing cooperation with the second perforation.

[0012] In order to position the steam joint and the air joint, the inner peripheral wall of the bottom edge of the outer tube is provided with an inner step, and the inner part of the bottom edge of the outer tube is provided with a pressing piece group, the pressing piece group is clamped between the step surface of the inner step and the sealing head, and the pressing piece group comprises a first pressing piece and a second pressing piece which are connected in a top-and-bottom cooperation mode, the outer peripheral wall of the upper part of the steam joint is provided with a first limiting flange, the outer peripheral wall of the upper part of the air joint is provided with a second limiting flange, and the first limiting flange and the second limiting flange are clamped between the first pressing piece and the second pressing piece.

[0013] In order to facilitate the installation of the sealing head, the sealing head is inserted at the port of the bottom end of the outer tube, and the outer peripheral wall of the bottom of the sealing head is provided with an annular convex edge, the annular convex edge is abutted on the end surface of the outer tube, and the top surface of the nozzle is abutted on the annular convex edge.

[0014] In order to facilitate the limitation of the screwing depth of the connecting cylinder, the inner peripheral wall of the connecting cylinder is provided with an inner step, and the step surface of the inner step is abutted on the annular convex edge.

[0015] In order to facilitate the monitoring of the temperature of milk, a temperature sensor is further arranged, the temperature sensor comprises a lead wire arranged in the outer tube and a probe connected to the bottom end of the lead wire, and the probe sequentially penetrates through the sealing head and the nozzle and is externally extended to the bottom surface of the nozzle.

[0016] In order to improve the quality of milk foam, the inside of the nozzle is provided with a negative pressure cavity communicated with the steam inner tube and the air outer tube, and the nozzle is provided with a jet hole and a milk suction hole communicated with the negative pressure cavity.

[0017] Compared with the prior art, the utility model has the advantages that the connecting cylinder is sleeved on the outer periphery of the nozzle, the limiting boss is arranged on the bottom edge of the connecting cylinder and extends inwardly and bends, when the connecting cylinder is threadedly connected to the bottom of the outer tube, the nozzle is clamped between the outer tube and the limiting boss, so that the nozzle is convenient to disassemble and clean. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of the milk steam pipe of this utility model;

[0019] Figure 2 for Figure 1 A three-dimensional exploded view;

[0020] Figure 3 for Figure 1 A longitudinal sectional view;

[0021] Figure 4 for Figure 3 Enlarged view of Part I. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0024] like Figures 1 to 4 The image shows a preferred embodiment of the milk-making steam pipe of this utility model. The milk-making steam pipe includes an outer pipe 1, a steam inner pipe 2, an air outer pipe 3, a temperature sensor 4, a nozzle 5, and a connecting cylinder 6.

[0025] The outer tube 1 has a downwardly extending connecting ring 11 at its bottom edge, and the outer peripheral wall of the connecting ring 11 has an external thread 111. A sealing head 12 made of silicone material is inserted at the bottom end of the outer tube 1. The outer peripheral wall of the bottom of the sealing head 12 has a protruding annular flange 121, which abuts against the end face of the connecting ring 11. In addition, the sealing head 12 has a first through hole 122 and a second through hole 123 arranged at intervals. The inner peripheral wall of the bottom edge of the outer tube 1 has an inner step 13. The bottom edge of the outer tube 1 has a pressure plate assembly inside, which is sandwiched between the step surface of the inner step 13 and the sealing head 12, and includes a first pressure plate 14 and a second pressure plate 15 that are connected vertically. A heat-insulating handle 16 is fitted on the outer periphery of the upper part of the outer tube 1.

[0026] The steam inner tube 2 is arranged in the outer tube 1. Specifically, the bottom end of the steam inner tube 2 is connected with a steam joint 21, the lower part of the steam joint 21 is arranged in the first perforation 122 and is in sealing cooperation with the first perforation 122, and the outer peripheral wall of the upper part of the steam joint 21 is provided with a first limiting flange 211 which is clamped between the first pressing sheet 14 and the second pressing sheet 15.

[0027] The air outer tube 3 is arranged in the outer tube 1. Specifically, the bottom end of the air outer tube 3 is connected with an air joint 31, the lower part of the air joint 31 is arranged in the second perforation 123 and is in sealing cooperation with the second perforation 123, and the outer peripheral wall of the upper part of the air joint 31 is provided with a second limiting flange 311 which is clamped between the first pressing sheet 14 and the second pressing sheet 15.

[0028] The temperature sensor 4 comprises a lead wire 41 arranged in the outer tube 1 and a probe 42 connected to the bottom end of the lead wire 41.

[0029] The nozzle 5 is made of silica gel and is arranged at the bottom of the outer tube 1. Specifically, the inside of the nozzle 5 is provided with a negative pressure cavity 51 which is open at the top, the outlet ends of the steam joint 21 and the air joint 31 are opposite to the top opening of the negative pressure cavity 51 so as to realize the communication with the negative pressure cavity 51, the bottom of the nozzle 5 is provided with a spray hole 52 and a milk suction hole 53 which are in communication with the negative pressure cavity 51, the spray hole 52 is in the shape of a contraction and is coaxially arranged with the steam joint 21, and the probe 42 passes through the sealing head 12 and the nozzle 5 in sequence and extends out of the bottom surface of the nozzle 5 and is arranged close to the milk suction hole 53.

[0030] The connecting cylinder 6 is sleeved on the outer periphery of the nozzle 5. Specifically, the inner peripheral wall of the top edge of the connecting cylinder 6 is provided with an inner thread 61 corresponding to the outer thread 111, the bottom edge of the connecting cylinder 6 is provided with a limiting boss 62 which is formed by bending and extending, and the inner peripheral wall of the connecting cylinder 6 is provided with an inner step 63. During installation, the outer thread 61 of the connecting cylinder 6 is threadedly connected to the outer thread 111 of the outer tube 1 so that the nozzle 5 is clamped between the outer tube 1 and the limiting boss 62, at this time, the bottom of the sealing head 12 is inserted into the negative pressure cavity 51, the top surface of the nozzle 5 and the step surface of the inner step 63 abut against the annular convex edge 121, and the outer peripheral wall of the bottom edge of the outer tube 1 is flush with the outer peripheral wall of the connecting cylinder 6.

[0031] The working principle of the embodiment is as follows:

[0032] (1) During installation, the nozzle 5 is only required to be assembled with the sealing head 12 after passing through the probe 42, and then the outer thread 61 of the connecting cylinder 6 is threadedly connected to the outer thread 111 of the outer tube 1, so as to realize the installation of the nozzle 5;

[0033] (2) In use, the nozzle 5 is only partially immersed in the milk to automatically produce perfect milk foam. During the production of milk foam, high-pressure steam is delivered to the negative pressure chamber 51 through the steam inner tube 2 to generate negative pressure. Under the action of negative pressure, air enters the negative pressure chamber 51 through the air outer tube 3 and is dispersed into very small air particles by the high-pressure steam. At the same time, milk enters the negative pressure chamber 51 through the milk suction hole 53. The milk, steam and air are preliminarily mixed in the negative pressure chamber 51 and then sprayed into the milk cup through the spray hole 52 for secondary mixing. The milk with high tension wraps the small air particles to form very delicate milk foam. The foam will slowly float to the surface of the milk, and the liquid milk at the bottom of the cup will be completely made into milk foam.

[0034] During the whole process, the milk, steam and air are basically mixed in the negative pressure chamber 51 and basically cannot be sucked into the steam inner tube 2 and the air outer tube 3. The inside of the steam inner tube 2 and the air outer tube 3 is basically free of milk residue, so the use is safer and healthier. The milk is only left in the negative pressure chamber 51.

[0035] (3) When cleaning is needed, the connecting cylinder 6 is rotated off the outer tube 1 and the nozzle 5 is taken out, so that the nozzle 5 can be disassembled to facilitate cleaning of the surface of the nozzle 5 and the sealing head 12.

Claims

1. A steam wand for frothing milk, comprising an outer tube (1), a steam inner tube (2) arranged inside said outer tube (1), and a nozzle (5) mounted at the bottom of said outer tube (1) and communicating with said steam inner tube (2), characterized in that: The outer periphery of the spray head (5) is sleeved with a connecting cylinder (6), the bottom edge of the connecting cylinder (6) is provided with a limiting boss (62) extending inwardly, the connecting cylinder (6) is screwed on the bottom of the outer tube (1), so that the spray head (5) is clamped between the outer tube (1) and the limiting boss (62).

2. A steam wand according to claim 1, wherein: The bottom edge of the outer tube (1) is provided with a connecting ring (11) extending downwardly, the outer periphery of the connecting ring (11) is provided with external threads (111), the inner periphery of the top edge of the connecting cylinder (6) is provided with internal threads (61) capable of being screwed with the external threads (111).

3. A steam and milk pipe according to claim 2, characterized in that: The outer periphery of the bottom edge of the outer tube (1) is flush with the outer periphery of the connecting cylinder (6).

4. A steam and milk wand according to any one of claims 1 to 3, wherein: An air outer tube (3) is further arranged in the outer tube (1), the spray head (5) is communicated with the air outer tube (3).

5. A steam and milk pipe according to claim 4, characterized in that: The bottom end of the outer tube (1) is provided with a sealing head (12), the sealing head (12) is provided with a first perforation (122) and a second perforation (123) arranged at intervals, the bottom end of the steam inner tube (2) is connected with a steam joint (21), the lower part of the steam joint (21) is penetrated in the first perforation (122) and is sealed with the same, the bottom end of the air outer tube (3) is connected with an air joint (31), the lower part of the air joint (31) is penetrated in the second perforation (123) and is sealed with the same.

6. A steam and milk pipe according to claim 5, characterized in that: The inner periphery of the bottom edge of the outer tube (1) is provided with an inner step (13), a tablet pressing group is arranged in the inner part of the bottom edge of the outer tube (1), the tablet pressing group is clamped between the step surface of the inner step (13) and the sealing head (12), and comprises a first tablet pressing (14) and a second tablet pressing (15) connected in an upper-lower mode, the outer periphery of the upper part of the steam joint (21) is provided with a first limiting flange (211), the outer periphery of the upper part of the air joint (31) is provided with a second limiting flange (311), the first limiting flange (211) and the second limiting flange (311) are clamped between the first tablet pressing (14) and the second tablet pressing (15).

7. The steam and milk pipe according to claim 5, characterized in that: The sealing head (12) is inserted in the port of the bottom end of the outer tube (1), the outer periphery of the bottom of the sealing head (12) is provided with an annular convex edge (121), the annular convex edge (121) is abutted on the end surface of the outer tube (1), and the top surface of the spray head (5) is abutted on the annular convex edge (121).

8. A steam and milk pipe according to claim 7, characterized in that: The inner periphery of the connecting cylinder (6) is provided with an inner step (63), the step surface of the inner step (63) is abutted on the annular convex edge (121).

9. The steam and milk pipe according to claim 5, characterized in that: A temperature sensor (4) is further arranged, the temperature sensor (4) comprises a lead wire (41) arranged in the outer tube (1) and a probe (42) connected with the bottom end of the lead wire (41), the probe (42) is sequentially penetrated through the sealing head (12) and the spray head (5) and is externally extended from the bottom surface of the spray head (5).

10. The steam wand of claim 4, wherein: The inside of the spray head (5) has a negative pressure cavity (51) communicated with the steam inner tube (2) and the air outer tube (3), and the spray head (5) has a spray hole (52) and a milk suction hole (53) communicated with the negative pressure cavity (51).

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