Steam injection assembly

Abstract

The present application relates to the technical field of coffee machines, and in particular to a steam injection assembly, which is applied to a coffee machine. The steam injection assembly comprises a steam pipe, a steam nozzle, a supporting component, and an infrared temperature measurement sensor; the steam nozzle is communicated with a main unit of a coffee machine by means of the steam pipe; the supporting component is arranged on the outer wall of the steam pipe; and the infrared temperature measurement sensor is arranged on the supporting component, the measurement range of a measurement end of the infrared temperature measurement sensor can involve the liquid in a cup for milk frothing in which the steam nozzle is inserted, and the infrared temperature measurement sensor is used for measuring the temperature during milk frothing. Therefore, the infrared temperature measurement sensor is mounted on the outer wall of the steam pipe by means of the supporting component. In addition, the infrared temperature measurement sensor uses an infrared principle for temperature measurement, and a long probe does not need to be arranged, so that the impact on the milk frothing angle is reduced, the width of the steam pipe is not increased, the appearance is more attractive, interference of steam at the front end of the steam nozzle is not likely to happen, and the measurement accuracy is improved.

Description

Steam injection assembly

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 2023226445241, entitled “Steam Injection Component,” filed with the Patent Office of China on September 27, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of coffee machines, and in particular to a steam injection assembly. Background Art

[0004] At present, Italian coffee machines on the market mainly use steam to froth heated milk. First, the steam nozzle under the steam pipe is inserted into the milk cup, and then steam is sprayed for frothing. In order to more accurately detect the temperature of the milk foam when frothing, existing coffee machines mostly have a temperature sensing probe built into the steam pipe or set at the front side of the steam pipe. In both cases, the temperature sensing probe extends along the steam pipe, and the two are wrapped together by flexible pipes. The appearance of both structures is relatively bulky and extremely unsightly. In addition, because the temperature sensing probe is inserted into the milk cup and is extremely close to the steam sprayed by the steam nozzle, it is easily interfered by the steam temperature, resulting in inaccurate detection results.

[0005] Application Contents

[0006] The purpose of the present application is to provide a steam injection assembly, which to some extent solves the technical problem that the temperature sensing probe in the coffee machine in the prior art is built into the steam pipe or installed on the front side of the steam pipe. In both cases, the temperature sensing probe extends along the steam pipe and has a relatively thick appearance, which affects the appearance. In addition, since the temperature sensing probe extends into the milk cup and is extremely close to the steam ejected from the steam nozzle, it is easily disturbed by the temperature of the steam, resulting in inaccurate detection results.

[0007] The present application provides a steam injection assembly for use in a coffee machine, the steam injection assembly comprising: a steam pipe, a steam injection head, a support member, and an infrared temperature sensor; wherein the steam injection head is connected to a main unit of the coffee machine via the steam pipe; the support member is disposed on an outer wall of the steam pipe;

[0008] The infrared temperature sensor is arranged on the supporting member, and the detection range of the detection end of the infrared temperature sensor can cover the liquid in the cup to be frothed with the steam nozzle inserted, so as to detect the temperature when frothing the milk.

[0009] In the above technical solution, further, the support member includes a first support member and a second support member;

[0010] The first supporting member is arranged on one side of the steam pipe, the second supporting member is used to be arranged on the other side opposite to the steam pipe, and the first supporting member and the second supporting member are connected; the infrared temperature sensor is arranged on the first supporting member or the second supporting member.

[0011] In any of the above technical solutions, further, the support member further includes a locking member, and the first support member and the second support member are detachably connected via the locking member.

[0012] In any of the above technical solutions, further, the first supporting member is formed with an installation cavity, and the infrared temperature sensor is arranged in the installation cavity;

[0013] The first supporting member is provided with a detection hole communicating with the mounting cavity, and the detection end of the infrared temperature sensor is facing the detection hole;

[0014] The supporting member further includes a cover, and the cover is disposed on the open end of the installation cavity.

[0015] In any of the above technical solutions, further, the first supporting member is further formed with a mounting groove communicating with the mounting cavity, and the infrared temperature sensor is arranged in the mounting groove.

[0016] In any of the above technical solutions, further, the infrared temperature sensor and the first supporting member are detachably connected via a fastening member.

[0017] In any of the above technical solutions, further, the first supporting member is formed with a first mounting groove adapted to one side of the steam pipe, the second supporting member is formed with a second mounting groove adapted to the other side of the steam pipe, and the first mounting groove and the second mounting groove form an installation space with openings at both ends for installing the steam pipe.

[0018] In any of the above technical solutions, further, one of the first support member and the second support member is formed with a positioning protrusion, the other of the first support member and the second support member is formed with a positioning groove, and the positioning protrusion is installed in the positioning groove.

[0019] In any of the above technical solutions, further, the first supporting member is provided with a detection through hole, and the detection end of the infrared temperature sensor detects the temperature during milk frothing through the through hole.

[0020] In any of the above technical solutions, further, the first supporting member is located on the upper side of the steam pipe, and the front end of the first supporting member extends to obliquely above the steam nozzle, so that the detection end of the infrared temperature sensor is located obliquely above the steam nozzle.

[0021] In any of the above technical solutions, further, the steam pipe includes at least a first steam pipe and a second steam pipe that are connected to each other; wherein, the first steam pipe is connected to the main unit, the second steam pipe is connected to the steam nozzle, and the first steam pipe is higher than the second steam pipe;

[0022] The second steam pipe forms an angle with the first steam pipe; the supporting member is used to be installed on the first steam pipe; the detection end of the infrared temperature sensor is arranged obliquely above the side of the second steam pipe away from the main unit, so that the detection range of the detection end of the infrared temperature sensor is located on the side of the second steam pipe away from the main unit.

[0023] In any of the above technical solutions, further, the steam pipe also includes a switching steam pipe, and the first steam pipe is connected to the main unit through the switching steam pipe.

[0024] In any of the above technical solutions, further, the second steam pipe is arranged along the height direction of the main unit or is arranged to be inclined outward with respect to the height direction of the main unit.

[0025] In any of the above technical solutions, further, the infrared temperature sensor is an infrared thermopile sensor.

[0026] In any of the above technical solutions, further, the steam injection assembly also includes a wiring pipe arranged on the supporting member, which is used to introduce the lead wire of the infrared temperature sensor into the main unit.

[0027] In any of the above technical solutions, further, the steam injection assembly also includes a circuit board arranged on the supporting member, and the circuit board is communicatively connected to the infrared temperature sensor.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] The present application provides a novel steam injection assembly, in which an infrared temperature sensor is installed on the outer wall of a steam pipe through a supporting member. In addition, the infrared temperature sensor uses the infrared principle to measure temperature, and there is no need to set a long probe, which reduces the impact on the milk frothing angle and does not increase the width of the steam pipe. That is, the steam pipe does not become thick, thereby making the appearance more beautiful and not easily affected by the steam at the front end of the steam nozzle, thereby improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] FIG1 is an exploded view of a steam injection assembly provided in an embodiment of the present application;

[0032] FIG2 is a partial enlarged view of FIG1 ;

[0033] FIG3 is an assembly diagram of a steam injection assembly according to an embodiment of the present application;

[0034] FIG4 is another assembly diagram of the steam injection assembly provided in an embodiment of the present application;

[0035] FIG5 is a cross-sectional view along section AA of FIG4 ;

[0036] FIG6 is an enlarged structural diagram of FIG5 at point B;

[0037] FIG7 is a schematic structural diagram of a first supporting member provided in an embodiment of the present application;

[0038] FIG8 is another schematic structural diagram of the first supporting member provided in an embodiment of the present application;

[0039] FIG9 is a schematic structural diagram of a second supporting member provided in an embodiment of the present application.

[0040] Figure markings: 1-steam pipe, 11-transfer steam pipe, 12-first steam pipe, 13-second steam pipe, 2-steam nozzle, 3-support member, 31-first supporting member, 311-installation cavity, 312-detection hole, 313-installation groove, 314-first installation groove, 32-second supporting member, 321-second installation groove, 33-positioning protrusion, 34-positioning groove, 35-locking member, 36-cover, 4-infrared temperature sensor, 5-fastening member, 6-wiring pipe, 7-host, 8-circuit board. DETAILED DESCRIPTION

[0041] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0042] The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application.

[0043] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0044] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0046] The steam injection assembly according to some embodiments of the present application is described below with reference to FIG. 1 to FIG. 9 .

[0047] 1 to 6 , an embodiment of the present application provides a steam injection assembly for use in a coffee machine. The steam injection assembly includes a steam pipe 1, a steam injection head 2, a support member 3, and an infrared temperature sensor 4. The steam injection head 2 is connected to a main unit 7 of the coffee machine via the steam pipe 1. The support member 3 is disposed on the outer wall of the steam pipe 1.

[0048] The infrared temperature sensor 4 is provided on the supporting member 3 , and the detection range of the detection end of the infrared temperature sensor 4 can cover the liquid in the cup to be frothed with the steam nozzle 2 inserted therein, for detecting the temperature of the milk when frothing.

[0049] Based on the structure described above, it can be seen that the present application provides a new type of steam injection assembly, in which the infrared temperature sensor 4 is installed on the outer wall of the steam pipe 1 through the supporting member 3. In addition, the infrared temperature sensor 4 adopts the infrared principle to measure temperature, and there is no need to set a long probe, which reduces the impact on the milk frothing angle and does not increase the width of the steam pipe part, that is, the steam pipe part does not become thick, thereby making the appearance more beautiful, and is not easily disturbed by the steam at the front end of the steam nozzle 2, thereby improving the detection accuracy.

[0050] It should be noted that: in the prior art, the steam pipe 1 is generally exposed to the main unit 7 of the coffee machine, and the steam injection assembly provided in this application is also installed on the steam pipe 1 outside the main unit 7 of the coffee machine. Of course, it is not limited to this. The assembly position relationship between the steam pipe 1 and the main unit 7 can also be adjusted according to actual needs.

[0051] In addition, the present component is not limited to being used in coffee machines, but can also be used in devices that only perform milk frothing, such as milk frothers.

[0052] In this embodiment, preferably, as shown in FIG1 and FIG2 , the steam pipe 1 includes at least a first steam pipe 12 and a second steam pipe 13 that are connected to each other; wherein the first steam pipe 12 is connected to the main unit 7, and the second steam pipe 13 is connected to the steam nozzle 2, and the first steam pipe 12 is higher than the second steam pipe 13;

[0053] The second steam pipe 13 forms an angle with the first steam pipe 12; the support member 3 is used to be installed on the first steam pipe 12; the detection end of the infrared temperature sensor 4 is arranged obliquely above the side of the second steam pipe 13 away from the main unit 7, so that the detection range of the detection end of the infrared temperature sensor 4 is located on the side of the second steam pipe 13 away from the main unit 7.

[0054] According to the structure described above, the steam pipe 1 is bent, so that it can not only meet the communication with the host 7, but also ensure that the steam nozzle 2 is facing downward, meeting the requirements of conventional use, and the infrared temperature sensor 4 is installed on the first steam pipe 12 above the second steam pipe 13, so that the infrared temperature sensor 4 can be away from the steam nozzle 2 to avoid interference from steam.

[0055] Furthermore, preferably, the detection range of the detection end of the infrared temperature sensor 4 is conical, and the apex of the cone is the detection end, and the extension direction of the second steam pipe 13 is parallel to the busbar close to it in the conical detection range.

[0056] Further, preferably, as shown in Figures 1 and 2, the second steam pipe 13 extends along the height direction of the main unit 7, that is, the second steam pipe 13 is parallel to the height direction of the main unit 7. Of course, not limited to this, the second steam pipe 13 can also be arranged to be tilted outward relative to the height direction of the main unit 7, that is, the end of the second steam pipe 13 away from the first steam pipe 12 is the distal end, and the end close to the first steam pipe 12 is the proximal end. The distal end of the second steam pipe 13 is arranged away from the main unit 7 relative to the proximal end of the second steam pipe 13, or the second steam pipe 13 can also be arranged to be tilted inward relative to the height direction of the main unit 7.

[0057] Furthermore, preferably, the infrared temperature sensor 4 is an infrared thermopile sensor. Of course, it is not limited thereto, and may also be other sensors that use infrared principles to perform temperature detection.

[0058] In this embodiment, preferably, as shown in Figure 2, the steam pipe 1 also includes a switching steam pipe 11, and the first steam pipe 12 is connected to the main unit 7 through the switching steam pipe 11, which plays a switching role and makes the design orientation of the first steam pipe 12 more flexible, and can be adaptively adjusted according to the detection range of the infrared temperature sensor 4 and the orientation of the second steam pipe 13.

[0059] Furthermore, preferably, the first steam pipe 12 , the second steam pipe 13 and the transfer steam pipe 11 are an integrated structure.

[0060] Further, preferably, as shown in Figures 1 and 2, when the second steam pipe 13 extends along the height direction of the main unit 7, that is, the second steam pipe 13 is parallel to the height direction of the main unit 7, the first steam pipe 12 is arranged obliquely upward along the direction of the first steam pipe 12 toward the main unit 7; when the second steam pipe 13 is arranged to be inclined outward relative to the height direction of the main unit 7, the first steam pipe 12 is arranged obliquely downward along the direction of the first steam pipe 12 toward the main unit 7. Correspondingly, the aforementioned transfer steam pipe 11 can be adaptively adjusted according to the orientation of the main unit 7 and the first steam pipe 12 to meet the transfer requirements.

[0061] Of course, the present invention is not limited to the above structure, and the transfer steam pipe 11 may not be provided, that is, there are only the first steam pipe 12 and the second steam pipe 13, or there is only the second steam pipe 13. In this case, for example: part of the structure of the main unit 7 extends above the second steam pipe 13, the top of the second steam pipe 13 is connected to the upper part of the main unit 7, and the support member 3 is installed on the outside of the second steam pipe 13, etc.

[0062] In this embodiment, preferably, as shown in Figures 1, 2 and 6, the support member 3 includes a first support member 31 and a second support member 32; wherein, the first support member 31 is used to be installed on one side of the first steam pipe 12, and the second support member 32 is used to be installed on the other side opposite to the first steam pipe 12, and the first support member 31 and the second support member 32 are connected; the infrared temperature sensor 4 is arranged on the first support member 31 or the second support member 32.

[0063] According to the structure described above, the first support member 31 and the second support member 32 are assembled and fixed on the outer wall of the first steam pipe 12, so that the infrared temperature sensor 4 is fixedly installed outside the first steam pipe 12, and there is no need to perform operations such as drilling on the outer wall of the first steam pipe 12, thereby avoiding steam leakage, which is safer and more reliable.

[0064] In this embodiment, preferably, as shown in Figure 2, the support member 3 also includes a locking member 35, and the first support member 31 and the second support member 32 are detachably connected by the locking member 35, such as a screw or a bolt. Of course, not limited to this, the first support member 31 and the second support member 32 can also be connected by snapping or gluing.

[0065] In this embodiment, preferably, as shown in FIG6 and FIG7 , the first support member 31 is formed with a mounting cavity 311 , and preferably, the upper side of the first support member 31 away from the first steam pipe 12 is provided with the aforementioned mounting cavity 311 , and the infrared temperature sensor 4 is disposed in the mounting cavity 311 ;

[0066] The first supporting member 31 is provided with a detection hole 312 communicating with the mounting cavity 311 , and the detection end of the infrared temperature sensor 4 is facing the detection hole 312 , facilitating temperature detection;

[0067] The support member 3 also includes a cover 36, and the cover 36 is covered at the open end of the installation cavity 311. It can be seen that the infrared temperature sensor 4 is sealed in the installation cavity 311 by the cover 36, which plays a role of waterproof and dustproof, ensures the normal operation of the infrared temperature sensor 4, and helps to extend its service life, and has a more beautiful appearance.

[0068] Furthermore, preferably, the cover 36 and the first support member 31 may be connected by snapping or bolts.

[0069] Note: The structure of the first supporting member 31 is not limited to this. It may also be just a bracket, and the infrared temperature sensor 4 is directly mounted on the bracket. The aforementioned cover 36 may not be provided, and the specific selection is based on actual needs.

[0070] In this embodiment, preferably, as shown in Figures 6 and 7, the first support member 31 is also formed with a mounting groove 313 connected to the mounting cavity 311, and the infrared temperature sensor 4 is arranged in the mounting groove 313, so that the infrared temperature sensor 4 and the first support member 31 are assembled more stably and less likely to shake.

[0071] Further, preferably, part of the structure of the infrared temperature sensor 4 extends to the outside of the installation groove 313 and is connected to the bottom wall of the installation cavity 311 through a fastening member 5 such as a screw or a bolt.

[0072] Of course, the present invention is not limited to the above structure. The installation groove 313 may not be provided. The infrared temperature sensor 4 may be directly installed in the installation cavity 311 and locked by screws or bolts. The assembly structure can be selected according to actual needs.

[0073] Furthermore, preferably, the steam injection assembly also includes a circuit board 8 arranged on the support member 3, and the circuit board 8 is communicatively connected to the infrared temperature sensor 4 to directly convert the numerical value of the infrared temperature sensor 4 into a temperature value, which is convenient for later recording and copying, and preferably, the circuit board 8 can be installed in the installation cavity 311 of the first support member 31.

[0074] In this embodiment, preferably, as shown in Figure 8, the first supporting member 31 is formed with a first mounting groove 314 adapted to one side of the first steam pipe 12, and the second supporting member 32 is formed with a second mounting groove 321 adapted to the other side of the first steam pipe 12, and the first mounting groove 314 and the second mounting groove 321 form an installation space with openings at both ends for installing the steam pipe 1.

[0075] According to the structure described above, by providing the first installation groove 314 and the second installation groove 321 , the first support member 31 and the second support member 32 are more firmly installed on the first steam pipe 12 .

[0076] Furthermore, preferably, a first mounting groove 314 is provided at the bottom of the first support member 31, a mounting cavity 311 is provided at the top, and a mounting protrusion is provided at the bottom of the front end of the first support member 31 away from the main unit 7 for forming the aforementioned mounting groove.

[0077] 8 and 9 , the first support member 31 and the second support member 32 are both formed with positioning protrusions 33, and the first support member 31 and the second support member 32 are both formed with positioning grooves 34, and the positioning protrusions 33 of the first support member 31 are installed in the positioning grooves 34 of the second support member 32, and the positioning protrusions 33 of the second support member 32 are installed in the positioning grooves 34 of the first support member 31, that is, the opposite side edges of the first support member 31 are stepped, and correspondingly, the opposite side edges of the second support member 32 are also stepped, and the two are adapted to each other. Of course, the present invention is not limited to this. The side edges of the first support member 31 can also be planes, and multiple positioning protrusions 33 are provided on the planes. Correspondingly, the side edges of the second support member 32 can also be planes, and multiple positioning grooves 34 are provided on the planes, and the positioning protrusions 33 are inserted into the positioning grooves 34.

[0078] According to the structure described above, the first support member 31 and the second support member 32 are assembled and positioned by the cooperation between the positioning protrusion 33 and the positioning groove 34 , thereby improving the assembly accuracy and facilitating the improvement of the assembly speed.

[0079] In this embodiment, preferably, as shown in Figure 6, the steam injection assembly also includes a wiring tube 6 arranged on the supporting member 3, one end of the wiring tube 6 extends into the installation cavity 311, and the other end of the wiring tube 6 extends into the main unit 7, which is used to introduce the lead wire of the infrared temperature sensor 4 into the main unit 7, which is more regular and beautiful, and has dustproof and waterproof functions.

[0080] In this embodiment, preferably, as shown in FIG6 , FIG8 and FIG9 , the first support member 31 is located on the upper side of the first steam pipe 12 , and the second support member 32 is located on the lower side of the first steam pipe 12 ;

[0081] The front end of the first supporting member 31 extends to obliquely above the steam nozzle 2, so that the detection end of the infrared temperature sensor 4 is located obliquely above the steam nozzle 2. In other words, the detection range of the detection end of the infrared temperature sensor 4 can cover the liquid in the cup below the second steam pipe 13.

[0082] It should be noted that the structure of the steam pipe 1 is not limited to the above, and can also be adjusted according to actual needs. When the structure of the steam pipe 1 changes, the first support member 31 and the second support member 32 are correspondingly installed on the changed pipeline.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A steam injection assembly, applied to a coffee machine, characterized in that: The steam spray assembly comprises: a steam pipe, a steam spray head, a supporting member and an infrared temperature sensor; wherein the steam spray head is connected to the main unit of the coffee machine through the steam pipe; the supporting member is arranged on the outer wall of the steam pipe; The infrared temperature sensor is arranged on the supporting member, and the detection range of the detection end of the infrared temperature sensor can cover the liquid in the cup to be frothed with the steam nozzle inserted therein, so as to detect the temperature when frothing the milk.

2. The steam injection assembly according to claim 1, characterized in that: The supporting member comprises a first supporting member and a second supporting member; The first supporting member is arranged on one side of the steam pipe, the second supporting member is arranged on the other side opposite to the steam pipe, and the first supporting member and the second supporting member are connected; the infrared temperature sensor is arranged on the first supporting member or the second supporting member.

3. The steam injection assembly according to claim 2, characterized in that: The supporting member further includes a locking member, and the first supporting member and the second supporting member are detachably connected via the locking member.

4. The steam injection assembly according to claim 2, characterized in that: The first supporting member is formed with an installation cavity, and the infrared temperature sensor is arranged in the installation cavity; The first supporting member is provided with a detection hole communicating with the mounting cavity, and the detection end of the infrared temperature measuring sensor is facing the detection hole; The supporting member further comprises a cover, and the cover is disposed on the opening end of the installation cavity.

5. The steam injection assembly according to claim 4, characterized in that: The first supporting member is further formed with an installation groove communicating with the installation cavity, and the infrared temperature sensor is arranged in the installation groove.

6. The steam injection assembly according to claim 2, characterized in that: The infrared temperature measuring sensor is detachably connected to the first supporting member via a fastening member.

7. The steam injection assembly according to claim 2, characterized in that: The first supporting member is formed with a first mounting groove adapted to one side of the steam pipe, the second supporting member is formed with a second mounting groove adapted to the other side of the steam pipe, and the first mounting groove and the second mounting groove form an installation space with openings at both ends for installing the steam pipe; and / or A positioning protrusion is formed on one of the first supporting member and the second supporting member, a positioning groove is formed on the other of the first supporting member and the second supporting member, and the positioning protrusion is installed in the positioning groove.

8. The steam injection assembly according to claim 2, characterized in that: The first supporting member is provided with a detection through hole, and the detection end of the infrared temperature sensor detects the temperature when frothing milk through the through hole; and / or The first supporting member is located on the upper side of the steam pipe, and the front end of the first supporting member extends to obliquely above the steam spray head, so that the detection end of the infrared temperature sensor is located obliquely above the steam spray head.

9. The steam injection assembly according to claim 1, characterized in that: The steam pipe at least includes a first steam pipe and a second steam pipe that are connected to each other; wherein the first steam pipe is connected to the main unit, the second steam pipe is connected to the steam nozzle, and the first steam pipe is higher than the second steam pipe; The second steam pipe forms an angle with the first steam pipe; the supporting member is used to be installed on the first steam pipe; the detection end of the infrared temperature sensor is arranged obliquely above the side of the second steam pipe away from the main unit, so that the detection range of the detection end of the infrared temperature sensor is located on the side of the second steam pipe away from the main unit.

10. The steam injection assembly according to claim 9, characterized in that The steam pipe further includes a switching steam pipe, and the first steam pipe is connected to the main machine through the switching steam pipe; and / or The second steam pipe is arranged along the height direction of the main machine or is arranged to be inclined outwardly with respect to the height direction of the main machine.

11. The steam injection assembly according to any one of claims 1 to 10, characterized in that: The infrared temperature sensor is an infrared thermopile sensor; and / or The steam injection assembly further comprises a wiring tube disposed on the supporting member, for introducing the lead wire of the infrared temperature sensor into the host; and / or The steam injection assembly further includes a circuit board disposed on the supporting member, and the circuit board is communicatively connected with the infrared temperature measurement sensor.

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