Airflow control switch

Abstract

The utility model relates to an airflow control switch, which comprises a fixed support, an air inlet, an air outlet, an air inlet, an air outlet, an air inlet and an air outlet, wherein the fixed support is internally provided with an accommodating cavity and an air outlet channel; the rotating part is arranged in the containing cavity, an air inlet groove allowing air flow to enter is formed in the peripheral wall of the rotating part, and the rotating part is arranged to be capable of rotating relative to the fixed support; the fixing piece is arranged in the containing cavity and located between the rotating piece and the air outlet channel, a first air hole and a second air hole which are communicated with the air outlet channel are formed in the fixing piece, the cross section area of the first air hole is smaller than that of the second air hole, and the first air hole and the second air hole are located in the rotating path of the air inlet groove; and one of the air inlets is selectively communicated with the air inlet groove to be in a small air inlet state or a large air inlet state. The flow can be adjusted only by rotating the rotating piece to enable the air inlet groove in the rotating piece to correspond to the first air hole and the second air hole, the whole adjusting process is convenient, rapid and safe, and the requirements of users can be better met.

Description

Technical Field

[0001] The utility model belongs to a control switch, in particular to an airflow control switch. Background Art

[0002] The airflow control switch is mainly used to control the size of the airflow. For example, in a coffee machine, the milk frothing mechanism is set to adjust the milk frothing, which mainly adjusts the quality of the milk frothing by controlling the size of the air intake.

[0003] For example, the Chinese utility model patent "A milk frothing machine frothing air intake regulating device", whose patent number is ZL202321544063.4 (authorization announcement number is CN220001518U) discloses a milk frothing machine frothing air intake regulating device, including a main body, an air intake solenoid valve is arranged inside the main body, a micro-pore component is arranged on the surface of the air intake solenoid valve, a connecting piece is arranged on the surface of the air intake solenoid valve, and the air inlet and air outlet of the connecting piece are respectively connected to the air inlet and air outlet of the air intake solenoid valve, the micro-pore component plays a role in limiting the maximum amount of air entering, and at the same time, due to the design of the micro-pore component, the incoming air is more uniform and fine, thereby improving the foaming quality of the milk.

[0004] The above patent controls the on and off of the air flow through the air intake solenoid valve, and completely relies on the switching frequency and switching time of the electronic control solenoid valve to control the amount of air entering, which has high control costs and energy consumption. When a large amount of air intake is required, the waiting time is relatively long, and the user experience is poor; and the solenoid valve that works continuously will lead to energy waste and increased use costs. In addition, after long-term use, electromagnetic leakage is prone to occur, posing a safety hazard. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide an airflow control switch which is convenient, fast and safe for adjusting the air intake volume in view of the current status of the above-mentioned prior art.

[0006] The second technical problem to be solved by the utility model is to provide an airflow control switch which can reliably block airflow.

[0007] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: an airflow control switch, comprising:

[0008] A fixed bracket, which has a containing cavity and an air outlet passage communicating with the containing cavity;

[0009] It is characterized by also including:

[0010] A rotating member, which is arranged in the accommodating cavity, and an air inlet groove for air flow is provided on the outer peripheral wall of the rotating member, and the rotating member is arranged to be rotatable relative to the fixed bracket;

[0011] A fixing member is arranged in the accommodating cavity and is located between the rotating member and the air outlet channel. The fixing member is provided with a first air hole and a second air hole connected with the air outlet channel. The cross-sectional area of ​​the first air hole is smaller than the cross-sectional area of ​​the second air hole. The first air hole and the second air hole are located on the rotating path of the air inlet groove so as to selectively connect with the air inlet groove and be in a small air intake state or a large air intake state.

[0012] The technical solution adopted by the utility model to solve the second technical problem is that the first air hole and the second air hole respectively correspond to the area of ​​the rotating part except the air inlet groove so that the switch is in a closed state.

[0013] In order to realize the rotation of the rotating member, a rotating mechanism capable of driving the rotating member to rotate is also included. The rotating mechanism is rotatably constrained on a side of the fixed bracket away from the air outlet channel and is connected to the rotating member.

[0014] The rotating mechanism can be actively driven by a driving mechanism or manually pushed, but preferably, the rotating mechanism includes a cover plate and a knob connected to the cover plate, the cover plate is located between the rotating member and the knob, and the rotating member is constrained on the cover plate.

[0015] When the cover plate rotates, the rotating part can be rotated together with the cover plate by fixing the two together or by a detachable restraint method. However, preferably, the cover plate has an extension part extending in the direction of the rotating part on one side facing the rotating part, and the rotating part has a limiting slot at a position corresponding to the extension part for the extension part to be inserted into.

[0016] The air inlet groove may be a strip groove extending along the axial direction of the fixing member, or other forms may be used, but preferably, the end face of the rotating member close to the fixing member is the first end face, and the air inlet groove is a notch that is recessed inward from the side edge of the first end face and extends away from the fixing member. In the large air intake state, the edge of the notch located on the first end face is located on the peripheral side of the first air hole. Obviously, in the small air intake state, the edge of the notch located on the first end face surrounds the peripheral side of the second air hole.

[0017] Preferably, the accommodating chamber is connected to the air outlet passage through a connecting passage, and a sealing ring is provided in the accommodating chamber between the connecting passage and the fixing member to achieve a sealed connection between the two. The existence of the sealing ring enables the airflow entering through the first air hole or the second air hole to be directly discharged into the air outlet passage through the connecting passage.

[0018] In order to realize the gear switching, a metal spring piece which rotates synchronously with the rotating part is also included. The fixed bracket is provided with a first gear piece corresponding to the small air intake state, a second gear piece corresponding to the switch closing state and a third gear piece corresponding to the large air intake state. The first, second and third gear pieces are all electrically connected to the controller, and are located on the rotation path of the metal spring piece, and are electrically connected to the metal spring piece respectively.

[0019] In order to improve the feel of rotating the rotating mechanism, an elastic member is provided on the side of the rotating mechanism facing the fixed member, the elastic member is arranged along the arrangement direction of the rotating mechanism and the fixed member, and a marble is provided at the free end of the elastic member, and a positioning groove for the marble to be inserted into or withdrawn is opened on the end face of the fixed bracket facing the rotating mechanism, each gear member corresponds to one positioning groove, and each positioning groove is arranged along the rotation direction of the rotating member.

[0020] Preferably, the second stopper is located between the first stopper and the third stopper. In addition, the third stopper can be located between the first stopper and the second stopper, or the first stopper can be located between the second stopper and the third stopper.

[0021] Compared with the prior art, the utility model has the advantages that: the airflow control switch opens the first air hole and the second air hole of different sizes on the fixed part, and only needs to rotate the rotating part so that the air inlet groove on the rotating part corresponds to the first air hole and the second air hole respectively, so as to adjust the flow rate. The whole adjustment process is convenient, fast and safe, which can better meet the needs of users and provide good user experience. In addition, it is easier to open the first air hole and the second air hole, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a partial structural schematic diagram of the airflow control switch of this embodiment;

[0023] Figure 2 for Figure 1 Schematic diagram of the three-dimensional decomposition structure;

[0024] Figure 3 for Figure 1 The cross-sectional view in the large air intake state;

[0025] Figure 4 for Figure 1 A cross-sectional view from another angle in a large air intake state;

[0026] Figure 5 for Figure 1 A cross-sectional view of the device in a closed state;

[0027] Figure 6 for Figure 1A cross-sectional view of the small air intake state;

[0028] Figure 7 for Figure 1 Schematic diagram of part of the structure. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] like Figures 1 to 7 As shown, the airflow control switch of this embodiment includes a fixed bracket 1, a fixed part 2, a rotating part 3, a rotating mechanism 4, a metal spring 6 and an elastic part 7. The fixed bracket 1 has a receiving cavity 11 and an air outlet channel 12 connected to the receiving cavity 11. Figure 7 As shown, the accommodating chamber 11 is connected to the air outlet channel 12 through the communicating channel 13 .

[0031] The fixing member 2 is disposed in the accommodating chamber 11, and the fixing member 2 is provided with a first air hole 21 and a second air hole 22 connected to the air outlet channel 12, and the cross-sectional area of ​​the first air hole 21 is smaller than the cross-sectional area of ​​the second air hole 22. In this embodiment, the first air hole and the second air hole are both circular holes, and the diameter of the first air hole is smaller than the diameter of the second air hole. The accommodating chamber 11 is provided with a sealing ring 5 located between the connecting channel 13 and the fixing member 2 to achieve a sealed connection between the two. The sealing ring 5 surrounds the periphery of the first air hole 21 and the second air hole 22. Figure 6 As shown, the aforementioned connecting passage 13 is a stepped hole, which includes a large hole portion and a small hole portion in sequence along the airflow direction.

[0032] The rotating member 3 is arranged in the accommodating cavity 11, and the above-mentioned fixed member 2 is located between the rotating member 3 and the air outlet channel 12. An air inlet groove 31 for air flow to enter is opened on the outer peripheral wall of the rotating member 3. In this embodiment, the end face of the rotating member 3 close to the fixed member 2 is the first end face 33, and the air inlet groove 31 is a notch that is recessed inward from the side edge of the first end face 33 and extends away from the fixed member 2. The above-mentioned rotating member 3 is arranged to be able to rotate relative to the fixed bracket 1, and the first air hole 21 and the second air hole 22 are located on the rotation path of the air inlet groove 31, so as to be connected with the air inlet groove 31 and be in a small air intake state or a large air intake state. In this embodiment, in the large air intake state, the edge of the notch located on the first end face 33 surrounds the circumference of the second air hole 22. In the small air intake state, the edge of the notch located on the first end face 33 surrounds the circumference of the first air hole 21. In addition, the airflow control switch also has a closed state. Specifically, the switch is in the closed state when the first air hole 21 and the second air hole 22 correspond to the regions of the rotating member 3 except the air inlet groove 31 respectively.

[0033] The above-mentioned rotating mechanism 4 drives the rotating member 3 to rotate. In this embodiment, the rotating mechanism 4 is rotatably constrained on the side of the fixed bracket 1 away from the air outlet channel 12, and is connected to the rotating member 3. Specifically, the rotating mechanism 4 includes a cover plate 41 and a knob 42 connected to the cover plate 41. The cover plate 41 is located between the rotating member 3 and the knob 42, and the rotating member 3 is constrained on the cover plate 41. In order to realize the connection between the rotating mechanism and the rotating member, as shown in FIG. Figure 7 As shown, the cover plate 41 has an extension piece 411 extending toward the rotating member 3 on one side thereof facing the rotating member 3 , and the rotating member 3 has a limiting slot 32 at a position corresponding to the extension piece 411 for the extension piece 411 to be inserted therein.

[0034] like Figure 7 As shown, the metal spring 6 is installed on the rotating mechanism, and the metal spring 6 rotates synchronously with the rotating member 3. In order to achieve the switching of gears, the fixed bracket 1 is provided with a first gear member 14 corresponding to the small air intake state, a second gear member 15 corresponding to the switch closed state, and a third gear member 16 corresponding to the large air intake state, and the second gear member 15 is located between the first gear member 14 and the third gear member 16. The first, second and third gear members 16 are all electrically connected to the controller, and are located on the rotation path of the metal spring 6, and are electrically connected to the metal spring 6 respectively. In order to increase the feel of operating the rotating mechanism, an elastic member 7 is provided on the side of the rotating mechanism 4 facing the fixed member 2, and the elastic member 7 is a spring. The elastic member 7 is arranged along the arrangement direction of the rotating mechanism 4 and the fixed member 2, and a marble 71 is provided at the free end of the elastic member 7. The fixed bracket 1 is provided with a positioning groove 17 on the end face facing the rotating mechanism 4 for the marble 71 to be inserted into or withdrawn from. The first, second and third gear members 16 respectively correspond to a positioning groove 17, and each positioning groove 17 is arranged along the rotation direction of the rotating member 3.

Claims

1. An airflow control switch, comprising: A fixed bracket (1) having a receiving chamber (11) and an air outlet passage (12) in communication with the receiving chamber (11); It is characterized in that Also included are: A rotating member (3) is arranged in the accommodating cavity (11), an air inlet groove (31) for air flow to enter is provided on the outer peripheral wall of the rotating member (3), and the rotating member (3) is arranged to be rotatable relative to the fixed bracket (1); A fixed member (2) is arranged in the accommodating cavity (11) and is located between the rotating member (3) and the air outlet channel (12). The fixed member (2) is provided with a first air hole (21) and a second air hole (22) which are connected to the air outlet channel (12). The cross-sectional area of ​​the first air hole (21) is smaller than the cross-sectional area of ​​the second air hole (22). The first air hole (21) and the second air hole (22) are located on the rotation path of the air inlet groove (31) so as to selectively connect with the air inlet groove (31) and be in a small air intake state or a large air intake state.

2. The airflow control switch according to claim 1, characterized in that: The first air hole (21) and the second air hole (22) respectively correspond to the area of ​​the rotating member (3) other than the air inlet groove (31), so that the switch is in a closed state.

3. The airflow control switch according to claim 1, characterized in that: It also includes a rotating mechanism (4) capable of driving the rotating member (3) to rotate; the rotating mechanism (4) is rotatably constrained on a side of the fixed bracket (1) away from the air outlet channel (12) and is connected to the rotating member (3).

4. The airflow control switch according to claim 3, characterized in that: The rotating mechanism (4) comprises a cover plate (41) and a knob (42) connected to the cover plate (41); the cover plate (41) is located between the rotating member (3) and the knob (42); and the rotating member (3) is constrained on the cover plate (41).

5. The airflow control switch according to claim 4, characterized in that: The cover plate (41) has an extension piece (411) extending in the direction of the rotating member (3) on one side thereof facing the rotating member (3); the rotating member (3) is provided with a limiting slot (32) at a position corresponding to the extension piece (411) for the extension piece (411) to be inserted therein.

6. The airflow control switch according to claim 1, characterized in that: The end face of the rotating member (3) close to the fixed member (2) is the first end face (33), and the air inlet groove (31) is a notch that is recessed inward from the side edge of the first end face (33) and extends away from the fixed member (2). In the large air intake state, the edge of the notch on the first end face (33) surrounds the circumference of the second air hole (22).

7. The airflow control switch according to claim 1, characterized in that: The accommodating chamber (11) is connected to the air outlet passage (12) via a connecting passage (13), and a sealing ring (5) is provided in the accommodating chamber (11) and is located between the connecting passage (13) and the fixing member (2) to achieve a sealed connection between the two.

8. The airflow control switch according to any one of claims 3 to 5, characterized in that: It also includes a metal spring (6) that rotates synchronously with the rotating member (3); the fixed bracket (1) is provided with a first gear member (14) corresponding to a small air intake state, a second gear member (15) corresponding to a switch-off state, and a third gear member (16) corresponding to a large air intake state; the first, second and third gear members (16) are all electrically connected to the controller, and are located on the rotation path of the metal spring (6), and are respectively electrically connected to the metal spring (6).

9. The airflow control switch according to claim 8, characterized in that: An elastic member (7) is arranged on one side of the rotating mechanism (4) facing the fixed member (2), the elastic member (7) is arranged along the arrangement direction of the rotating mechanism (4) and the fixed member (2), and a marble (71) is arranged at the free end of the elastic member (7), and a positioning groove (17) for the marble (71) to be inserted into or withdrawn is provided on the end surface of the fixed bracket (1) facing the rotating mechanism (4), each shifting member corresponds to one positioning groove (17), and each positioning groove (17) is arranged along the rotation direction of the rotating member (3).

10. The airflow control switch according to claim 8, characterized in that: The second shifting member (15) is located between the first shifting member (14) and the third shifting member (16).

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