Coffee maker

Abstract

The utility model discloses a coffee machine relates to household electrical appliances technical field, wherein, coffee machine includes the casing, steam generating device, steam delivery device and detection subassembly, the casing is equipped with the mounting base, steam generating device sets up in the casing, is used for generating hot steam, steam delivery device includes steam pipe and steam jet, and steam jet installs in the first end of steam pipe, and steam jet is seted up with at least one steam hole, detection subassembly includes detection device and trigger structure, and one of detection device and trigger structure sets up in the casing, and the other sets up in the second end of steam pipe, and moves with the swing of steam pipe, trigger structure is matched with detection device, and detection device is used for according to the swing amplitude of steam pipe, to control the on-off of steam path between steam generating device and steam passage. The utility model discloses coffee machine, can solve the problem that the swing angle of steam pipe is too big and is easy to scald the user.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a coffee machine. Background Technology

[0002] Currently, some milk foaming methods on the market use steam pipes. Steam is injected into the milk through the pipe, causing it to swirl and drawing in air, thus creating foam. Typically, users need to tilt the steam pipe, pointing the steam nozzle towards the edge of the milk surface. The steam then spirals upwards along the container wall, forming a vortex. However, manually adjusting the angle of the steam pipe is difficult to control. If the steam pipe is turned on at a large angle, the steam jet is more concentrated than vertical, increasing the risk of scalding, especially since the steam carries away hot water. Utility Model Content

[0003] The main purpose of this invention is to propose a coffee machine that aims to solve the problem of users being easily scalded when the steam pipe swings at an excessive angle.

[0004] To achieve the above objectives, the present invention provides a coffee machine comprising a housing, a steam generator, a steam delivery device, and a detection component. The housing is provided with a mounting base. The steam generator is disposed within the housing and is used to generate hot steam. The steam delivery device includes a steam pipe and a steam nozzle. The steam pipe has a steam channel communicating with the steam generator. The steam pipe is oscillatingly mounted on the mounting base. The steam nozzle is mounted at the first end of the steam pipe and has at least one steam hole communicating with the steam channel. The detection component includes a detection device and a triggering structure. One of the detection device and the triggering structure is disposed within the housing, and the other is disposed at the second end of the steam pipe, moving with the oscillation of the steam pipe. The triggering structure cooperates with the detection device, which controls the opening and closing of the steam path between the steam generator and the steam channel based on the oscillation amplitude of the steam pipe.

[0005] In one embodiment, the detection device is a micro switch, and the triggering structure is an actuating part that cooperates with the micro switch; or,

[0006] The detection device is a Hall sensor, and the triggering structure is a magnetic part that cooperates with the Hall sensor.

[0007] In one embodiment, the micro switch is disposed within the housing, the actuating part is disposed at the end of the steam pipe away from the steam nozzle, and the surface of the actuating part facing the micro switch is arc-shaped.

[0008] In one embodiment, the steam path between the steam generator and the steam channel has a connected state and a blocked state, and the micro switch is provided with a switch contact for abutting the actuating part; in the connected state, the actuating part abuts the micro switch, and in the blocked state, the actuating part separates from the micro switch.

[0009] In one embodiment, the surface of the switch contact facing the actuating part is an arc surface.

[0010] In one embodiment, the steam hole is provided, and the angle between the axis of the steam hole and the vertical line is A, which satisfies 0°≤A≤45° in the connected state.

[0011] In one embodiment, a plurality of steam holes are provided, and the plurality of steam holes are arranged at intervals along the circumference of the steam head. The angle between the axis of any steam hole and the vertical line is B, and in the connected state, the angle satisfies 30°≤B≤45°.

[0012] In one embodiment, the angle between the axis of the steam hole and the axis of the steam pipe (21) is D, which satisfies 0°<D≤35°.

[0013] In one embodiment, the swing angle of the steam pipe is C, and the angle between the axis of the steam hole and the axis of the steam pipe is D. In the connected state, 0°≤C≤45° and 0°≤C+D≤45° are satisfied.

[0014] In one embodiment, the outer wall of the steam pipe is fitted with a universal ball structure, which is movably connected to the mounting base.

[0015] The technical solution of this utility model uses a detection component to check whether the swing angle of the steam pipe is within a safe swing range. When the detection component detects that the swing of the steam pipe is within a safe range, the steam path between the steam generator and the steam channel remains connected; otherwise, it remains closed. By setting up the detection component, it is ensured that the angle between the axis of the steam hole and the vertical line is always ≤45°, meeting IEC safety requirements and preventing users from being scalded during use, thus reducing the risk of burns. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of a previous embodiment of the coffee machine steam pipe swinging according to this utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure after the central steam pipe has oscillated;

[0019] Figure 3 for Figure 1 A partial structural diagram of the central steam pipe;

[0020] Figure 4 for Figure 3 A schematic diagram of a portion of the structure where the steam pipe swings at a certain angle;

[0021] Figure 5 for Figure 3 A schematic diagram of a portion of the structure of the steam pipe that swings at a certain angle.

[0022] Explanation of icon numbers:

[0023] 10. Mounting base; 20. Steam delivery device; 21. Steam pipe; 21a. Steam passage; 22. Steam nozzle; 22a. Steam hole; 30. Detection assembly; 31. Detection device / micro switch; 311. Switch contact; 32. Triggering structure / actuator; 40. Universal ball; 50. Sealing ring; M. Vertical line;

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] Currently, some milk foaming methods on the market use steam pipes. Steam is injected into the milk through the pipe, causing it to swirl and drawing in air, thus creating foam. Typically, users need to tilt the steam pipe, pointing the steam nozzle towards the edge of the milk surface. The steam then spirals upwards along the container wall, forming a vortex. However, manually adjusting the angle of the steam pipe is difficult to control. If the steam pipe is turned on at a large angle, the steam jet is more concentrated than vertical, increasing the risk of scalding, especially since the hot steam carried by the steam is more likely to cause burns.

[0029] This invention proposes a coffee machine designed to solve the problem of users being easily scalded when the steam pipe swings at an excessive angle.

[0030] Please see Figure 1 and Figure 2In one embodiment of this utility model, the coffee machine includes a housing, a steam generator, a steam delivery device 20, and a detection component 30; the housing is provided with a mounting base 10; the steam generator is disposed inside the housing for generating hot steam; the steam delivery device 20 includes a steam pipe 21 and a steam nozzle 22, the steam pipe 21 has a steam channel 21a communicating with the steam generator, the steam pipe 21 is swayably mounted on the mounting base 10, and the steam nozzle 22 is mounted at the first end of the steam pipe 21 (i.e., the end of the steam pipe 21 away from the mounting base 10), the steam... The nozzle 22 has at least one steam hole 22a communicating with the steam channel 21a; the detection assembly 30 includes a detection device 31 and a triggering structure 32, one of which is disposed inside the housing and the other is disposed at the second end of the steam pipe 21 (i.e. the end of the steam pipe away from the steam nozzle 22), and moves with the swing of the steam pipe 21; the triggering structure 32 cooperates with the detection device 31, and the detection device 31 is used to control the opening and closing of the steam path between the steam generator and the steam channel 21a according to the swing amplitude of the steam pipe 21.

[0031] Specifically, the housing (not shown in the figure) is the main housing of the coffee machine. The housing can be made of high-temperature resistant plastic or metal (such as ABS or stainless steel). A mounting base 10 is provided on the housing corresponding to the coffee dispensing and hot water dispensing areas. The mounting base 10 is used to install and fix the steam pipe 21. The steam generating device is located inside the housing. The steam generating device can be an instant heating device, connected to the water tank of the coffee machine, which can quickly heat the water flowing into it and generate hot steam that flows to the steam pipe 21.

[0032] The steam delivery device 20 includes a steam pipe 21 and a steam nozzle 22. The steam nozzle 22 is installed at one end of the steam pipe 21, and the other end of the steam pipe 21 is movably mounted on the mounting base 10 via a ball joint 40, allowing the steam pipe 21 to swing and drive the steam nozzle 22 to swing together, facilitating milk frothing operations for the user. The steam nozzle 22 and the steam pipe 21 can be directly welded together, or they can be detachably connected using threaded structures, snap-fit ​​structures, or other similar methods. Preferably, the steam nozzle 22 and the steam pipe 21 are detachably connected. This facilitates cleaning of the steam nozzle 22, and allows the user to choose different types of steam nozzle 22 structures to froth milk according to different needs. For example, a steam nozzle 22 with a single steam hole 22a can be selected for making fine milk foam (such as cappuccino), while a steam nozzle 22 with multiple steam holes 22a can be selected for quickly frothing large quantities of milk (such as latte).

[0033] The steam pipe 21 is a hollow metal pipe (such as a copper pipe). The internal steam channel 21a is connected to the steam generator through a high-temperature resistant silicone tube, and can also be connected through pipes of other materials. The steam nozzle 22 is made of food-grade stainless steel. The steam nozzle 22 has at least one steam hole 22a that communicates with the steam channel 21a. Hot steam is discharged through the steam hole 22a to achieve milk frothing.

[0034] It's important to note that the orientation of the steam vent 22a is crucial for effective milk frothing. For example, if the steam vent 22a is perpendicular to the milk surface, the steam will directly impact the bottom of the milk, causing it to boil violently and produce numerous large bubbles. In this case, the foam will be coarse and prone to separation or defoaming. If the steam vent 22a is tilted towards the edge of the milk surface, the steam will spiral upwards along the container wall, forming a vortex. This method more evenly incorporates air into the milk, producing fine and dense foam while reducing the formation of large bubbles. The tilted steam vent 22a guides the milk to rotate, ensuring even heat distribution and preventing localized overheating. This helps heat the milk to the ideal temperature (60-65℃) while maintaining protein structure stability and improving foam stability.

[0035] Therefore, when frothing milk, users typically need to manually wiggle the steam pipe 21 to adjust the steam nozzle 22a to a suitable tilt angle before frothing. However, it is difficult for users to control the wiggle angle of the steam pipe 21 when manually adjusting it. If the steam pipe 21 is adjusted to a large angle to turn on the steam, the angle of the steam nozzle 22a's ejection direction relative to the vertical direction is larger, making it easier for hot steam to directly spray onto the user, posing a risk of scalding, especially since the hot water carried by the steam is more likely to scald the user. Furthermore, according to the relevant provisions of IEC 60335-2-15:2024 "Safety of household and similar electrical appliances - Part 2-15: Particular requirements for liquid heating appliances", when the steam pipe 21 is within the permissible wiggle range (usually ±180°), the angle between the direction of the steam flow ejected from the steam nozzle and the vertical direction (perpendicular M) shall not exceed 45°.

[0036] Therefore, the coffee machine in this embodiment also includes a detection component 30. The detection component 30 includes a detection device 31 and a trigger structure 32. One of the detection device 31 and the trigger structure 32 is disposed within the housing, and the other is disposed at the end of the steam pipe 21 away from the steam nozzle 22. The end disposed away from the steam nozzle 22 moves with the oscillation of the steam pipe 21. The detection structure can be a mechanical microswitch 31 in contact with the trigger structure 32, or it can be a Hall sensor sensing the magnetic field of the trigger structure 32. During the oscillation of the steam pipe 21, the detection device 31 and the trigger structure 32 cooperate to detect whether the oscillation of the steam pipe 21 is within a safe range.

[0037] In other words, when the detection component 30 detects that the oscillation of the steam pipe 21 is within a safe range, the steam path between the steam generator and the steam channel 21a remains connected; otherwise, it remains closed. The safe range of oscillation for the steam pipe 21 can be determined by the angle between the axis of the steam orifice 22a and the axis of the section of the steam pipe 21 closest to the steam nozzle 22. By configuring the detection component 30, it ensures that the angle between the axis of the steam orifice 22a and the vertical line M is always ≤45°, meeting IEC safety requirements and preventing burns to users during use, thus reducing the risk of burns.

[0038] Please see Figures 3 to 5 The aforementioned perpendicular line M, and the perpendicular line M mentioned below, refers to a line segment perpendicular to the horizontal plane (or sea level), that is, the direction of the perpendicular line M is the direction of gravity (vertical direction).

[0039] The technical solution of this utility model uses a detection component 30 to detect whether the swing angle of the steam pipe 21 is within a safe swing range. When the detection component 30 detects that the swing of the steam pipe 21 is within a safe range, the steam path between the steam generator and the steam channel 21a is always connected; otherwise, it is closed. By setting up the detection component 30, it can be ensured that the angle between the axis of the steam hole 22a and the vertical line M is always ≤45°, meeting IEC safety requirements and preventing users from being scalded during use, thus reducing the risk of burns.

[0040] Please see Figure 1 and Figure 2 There are multiple ways to select the type of detection device 31 and trigger structure 32. In one embodiment, the detection device 31 is a micro switch 31, and the trigger structure 32 is an actuating part 32 that cooperates with the micro switch 31.

[0041] Specifically, the detection device 31 can be a micro switch 31, and the triggering structure 32 is an actuating part 32 that cooperates with the micro switch 31. The actuating part 32 is always in contact with the switch contact 311 of the micro switch 31, so that the micro switch 31 can detect that the steam pipe 21 is always within a safe swing angle range. If the actuating part 32 separates from the switch contact 311 of the micro switch 31, it indicates that the swing angle of the steam pipe 21 is too large, and the angle between the axis of the steam hole 22a and the vertical line M exceeds 45 degrees, posing a safety hazard. At this time, the steam path between the steam generator and the steam channel 21a can be controlled to be disconnected or blocked. The micro switch 31 has high sensitivity, accuracy, and fast response speed, and can promptly cut off the connection of the steam path between the steam generator and the steam channel 21a.

[0042] In another embodiment, the detection device 31 is a Hall sensor (not shown in the figure), and the triggering structure 32 is a magnetic part that cooperates with the Hall sensor. Specifically, the Hall sensor detects the swing angle of the steam pipe 21 by inducing a magnetic field. This non-contact detection method eliminates mechanical wear and has a long service life. Furthermore, the Hall sensor can accurately output analog signals within the range of 0-360° (e.g., ±0.1° accuracy). When the angle approaches the 45° threshold, the system can reduce the steam pressure or issue an alarm in advance to provide early warning and avoid abrupt operation caused by direct cutoff.

[0043] In one embodiment, a micro switch 31 is disposed within a housing, and an actuating part 32 is disposed at the end of the steam pipe 21 furthest from the steam nozzle 22. The surface of the actuating part 32 facing the micro switch 31 is arc-shaped. Specifically, disposing the micro switch 31 within the housing facilitates connection between the micro switch 31 and the control module via a wire, and fixes the position of the micro switch 31, resulting in higher accuracy in detecting the oscillation of the steam pipe 21. The actuating part 32, disposed at the end of the steam pipe 21 furthest from the steam nozzle 22, can be welded to its end or detachably connected to the end of the steam pipe 21. To ensure the stability of the connection between the actuating part 32 and the steam pipe 21, the actuating part 32 can be welded integrally to the end of the steam pipe 21. The surface of the actuating part 32 facing the micro switch 31 is set as an arc surface. When the steam pipe 21 swings, it guides the contact surface of the actuating part 32 and the switch contact 311 of the micro switch 31, guiding them to slide relatively smoothly and avoiding jamming caused by sudden angle changes when the steam pipe 21 swings.

[0044] Furthermore, the arc surface of the actuating part 32 can be configured as a hemispherical surface, and a wear-resistant and lubricating coating can be applied to the arc surface to improve service life and reduce friction.

[0045] Please see Figure 1 and Figure 2 In one embodiment, the steam path between the steam generator and the steam channel 21a has a connected state and a blocked state. The micro switch 31 is provided with a switch contact 311 for abutting against the actuating part 32. In the connected state, the actuating part 32 abuts against the micro switch 31, and in the blocked state, the actuating part 32 is separated from the micro switch 31.

[0046] Specifically, the opening and closing of the steam path between the steam generator and the steam channel 21a can be achieved by installing a one-way valve on the steam path. This one-way valve can be electrically connected to the control module and the detection device 31. Based on the electrical signal output by the detection device 31, the opening and closing of the one-way valve is controlled, thereby controlling the opening and closing of the steam path between the steam generator and the steam channel 21a. When the switch contact 311 and the actuating part 32 of the microswitch 31 are in contact, it is in a connected state. At this time, the one-way valve is in the open state, and the hot steam generated by the steam generator can flow into the steam channel 21a of the steam pipe 21 through the one-way valve and flow out from the steam hole 22a. When the switch contact 311 and the actuating part 32 of the microswitch 31 are separated, it indicates that the swing angle of the steam pipe 21 exceeds the safe range. The control module receives the signal and controls the one-way valve to close, thereby blocking the steam path between the steam generator and the steam channel 21a.

[0047] Please see Figure 1 and Figure 2 In one embodiment, the surface of the switch contact 311 facing the actuating part 32 is curved. Similarly, the surface of the switch contact 311 facing the actuating part 32 is also curved, cooperating with the curved surface of the actuating part 32 to further guide the relative movement between the two, guiding them to slide relatively smoothly and avoiding jamming caused by sudden angle changes when the steam pipe 21 swings. The switch contact 311 of the micro switch 31 can be made of hemispherical copper alloy material, with a contact area of ​​≥80% with the curved surface of the actuating part 32, further ensuring contact stability and signal transmission reliability.

[0048] In one embodiment, a steam hole 22a is provided, and the angle between the axis of the steam hole 22a and the vertical line M is A. In the connected state, this angle satisfies 0°≤A≤45°. Specifically, the number of steam holes 22a can be one, allowing the steam to be concentrated and sprayed with stronger impact, suitable for quickly heating milk and producing thicker milk foam (such as hot latte or cappuccino), shortening the frothing time. The angle between the axis of the steam hole 22a and the vertical line M is A, meaning that the axis of the steam hole 22a forms an angle A with the vertical direction. When the steam path between the steam generator and the steam channel 21a is connected, the angle A ranges from 0° to 45°. When the angle A = 0°, it indicates that the spray direction of the steam hole 22a is in the same direction as the extension direction of the end of the steam pipe 21. At this time, the angle range of the user swinging the steam pipe 21 can be between 0° and 45°. Within this range, it is within a relatively safe range, and the hot water or steam sprayed from the steam hole 22a will not easily scald the user. When the included angle A = 45°, it indicates that the angle between the steam pipe 21 and the vertical line M is 0°. When using the steam pipe 21 to froth milk, the user does not need to swing the steam pipe 21; simply place the cup containing milk under the steam nozzle 22 of the steam pipe 21. Of course, the angle A can also be, for example, 30°, 35°, 38°, 40°, 41°, 42°, 43°, or 44°, without specific limitation.

[0049] Please see Figures 3 to 5 In one embodiment, multiple steam holes 22a are provided, and the multiple steam holes 22a are arranged at intervals along the circumference of the steam head. The angle between the axis of any steam hole 22a and the vertical line M is B, and in the connected state, it satisfies 30°≤B≤45°.

[0050] Specifically, the design of multiple steam holes 22a ensures uniform steam dispersion and a wide contact area with the milk, making it easier to create fine and dense milk foam (such as Flat White or Cappuccino). It also reduces the difficulty of operation, provides more even heating, and is suitable for slow-paced frothing, especially for cold or whole milk. The number of steam holes 22a can be set to 3-6. These multiple steam holes 22a are arranged at intervals along the circumference of the steam nozzle 22. The angle B between the axis of any steam hole 22a and the perpendicular M is defined as follows: when the steam path between the steam generator and the steam channel 21a is open, the angle B ranges from 30° to 45°. The angle can be exemplarily 30°, 35°, 40°, 41°, 42°, 43°, 44°, or 45°, without specific limitations. The angle between the axis of the steam hole 22a and the vertical line M is limited to between 30° and 45°. This ensures the milk frothing effect and prevents users from getting burned by limiting the angle.

[0051] Furthermore, the angle between the axis of the steam hole 22a and the axis of the steam pipe 21 is D, satisfying 0° < D ≤ 35°. Specifically, when the angle D is small (e.g., close to 0°), the direction of the steam ejected from the steam hole 22a is basically consistent with the axis of the steam pipe 21, making it suitable for vertical or near-vertical insertion into the bottom of the milk frothing pitcher. This facilitates concentrated force to churn the milk upwards, forming a fine vortex, suitable for frothing cold milk or scenarios requiring rapid frothing. For example, when making cappuccino, a larger steam impact force is needed in the initial frothing stage, and a small angle can improve efficiency. When the angle D increases to 35°, the steam injection direction forms a certain tilt angle with the axis of the steam pipe 21, and the steam will be sprayed into the milk at an angle. This design helps to: ① reduce milk splashing: avoid steam directly impacting the side wall or liquid surface of the milk pitcher, reducing the risk of splashing, especially suitable for beginners. ② Precise control of milk foam texture: Angled spraying allows the milk to form a gentler swirl in the container, making it easier to control the fineness and temperature of the milk foam in the later stages of whipping (such as when making a latte), and avoiding over-whipping that results in coarse milk foam.

[0052] Please see Figure 5 In one embodiment, the swing angle of the steam pipe 21 is C, and the angle between the axis of the steam hole 22a and the axis of the steam pipe 21 is D. In the connected state, 0°≤C≤45° and 0°≤C+D≤45° are satisfied.

[0053] Specifically, the swing angle C of the steam pipe 21 refers to the swing angle of the steam pipe 21 relative to the vertical line during use, that is, the angle between the axis of the steam pipe 21 and the vertical line. The swing angle of the steam pipe 21 is also limited by IEC safety regulations, which require that the angle between the axis of the steam hole 22a and the vertical line M is always ≤45°. Therefore, based on the number of steam holes 22a and the spray direction of the steam holes 22a, the swing angle C of the steam pipe 21 is limited to between 0° and 45°, and the sum of the swing angle C of the steam pipe 21 and the angle D between the axis of the steam hole 22a and the axis of the steam pipe 21 is also between 0° and 45°, thus meeting IEC safety requirements and reducing the risk of scalding users.

[0054] Please see Figure 1 and Figure 2 In one embodiment, the actuating part 32 is screwed, riveted, or snapped onto the steam pipe 21. Specifically, the actuating part 32 and the steam pipe 21 can be connected in a detachable manner to facilitate replacement of the actuating part 32 after long-term wear.

[0055] Please continue reading. Figure 1 and Figure 2In one embodiment, a universal ball 40 is fitted onto the outer wall of the steam pipe 21, and the universal ball 40 is movably connected to the mounting base 10. Specifically, the steam pipe 21 is oscillating via the universal ball 40 fitted onto its outer wall. The universal ball 40 is fixedly connected to the steam pipe 21, and the universal ball 40 is rotatable relative to the mounting base 10, thereby enabling the oscillation of the steam pipe 21. Furthermore, a sealing ring 50 can be provided at the mating point between the universal ball 40 and the mounting base 10 to prevent steam leakage into the housing.

[0056] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A coffee machine, characterized in that, include: The housing is equipped with a mounting base; A steam generator is disposed inside the housing for generating hot steam; A steam conveying device includes a steam pipe and a steam nozzle. The steam pipe has a steam channel communicating with the steam generating device. The steam pipe is swayably mounted on the mounting base. The steam nozzle is mounted on the first end of the steam pipe and has at least one steam hole communicating with the steam channel. as well as The detection assembly includes a detection device and a triggering structure. One of the detection device and the triggering structure is disposed inside the housing, and the other is disposed at the second end of the steam pipe and moves with the oscillation of the steam pipe. The triggering structure cooperates with the detection device, and the detection device is used to control the opening and closing of the steam path between the steam generator and the steam channel according to the oscillation amplitude of the steam pipe.

2. The coffee machine as described in claim 1, characterized in that, The detection device is a micro switch, and the triggering structure is an actuating part that cooperates with the micro switch; or, The detection device is a Hall sensor, and the triggering structure is a magnetic part that cooperates with the Hall sensor.

3. The coffee machine as described in claim 2, characterized in that, The micro switch is disposed inside the housing, and the actuating part is disposed at the end of the steam pipe away from the steam nozzle. The surface of the actuating part facing the micro switch is arc-shaped.

4. The coffee machine as described in claim 3, characterized in that, The steam path between the steam generator and the steam channel has a connected state and a blocked state. The micro switch is provided with a switch contact for abutting the actuating part. In the connected state, the actuating part abuts the micro switch, and in the blocked state, the actuating part separates from the micro switch.

5. The coffee machine as described in claim 4, characterized in that, The surface of the switch contact facing the actuating part is curved.

6. The coffee machine as described in claim 4, characterized in that, The steam hole is provided, and the angle between the axis of the steam hole and the vertical line is A. In the connected state, the angle satisfies 0°≤A≤45°.

7. The coffee machine as described in claim 4, characterized in that, The steam holes are provided in multiple ways and are arranged at intervals along the circumference of the steam nozzle. The angle between the axis of any steam hole and the vertical line is B, which satisfies 30°≤B≤45° in the connected state.

8. The coffee machine as described in claim 4, characterized in that, The angle between the axis of the steam hole and the axis of the steam pipe is D, which satisfies 0°<D≤35°.

9. The coffee machine as described in claim 6 or 7, characterized in that, The swing angle of the steam pipe is C, and the angle between the axis of the steam hole and the axis of the steam pipe is D. In the connected state, 0°≤C≤45° and 0°≤C+D≤45° are satisfied.

10. The coffee machine as described in any one of claims 1 to 8, characterized in that, The outer wall of the steam pipe is fitted with a universal ball, which is movably connected to the mounting base.

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