WO2021017142A1

WO2021017142A1 - Air duct assembly, wind wheel apparatus, and air-blowing device

Info

Publication number: WO2021017142A1
Application number: PCT/CN2019/108628
Authority: WO
Inventors: 陈汉飞; 孙志平; 王庆; 王杜; 杨鑫; 杜文波; 谭成波; 李名毕; 都国辉
Original assignee: 广东美的环境电器制造有限公司; 美的集团股份有限公司
Priority date: 2019-08-01
Filing date: 2019-09-27
Publication date: 2021-02-04
Also published as: CN112303904B; CN112303904A

Abstract

Disclosed are an air duct assembly (1000), a wind wheel apparatus comprising the air duct assembly (1000), and an air-blowing device. The air duct assembly (1000) comprises a shell (1), a heating body unit (2), and a driving mechanism (3), wherein an air duct (1a) is formed in the shell (1), the heating body unit (2) is arranged in the air duct (1a), and the driving mechanism (3) is connected to the heating body unit (2) so as to drive the heating body unit (2) to rotate in the air duct (1a). When cold air or normal-temperature air needs to be blown, the driving mechanism (3) drives the heating body unit (2) to rotate to a position where same avoids the air duct (1a), an airflow discharged from the air duct (1a) substantially does not pass through the heating body unit (2), the heating body unit (2) does not cause wind resistance to the airflow, and the air volume of a fan is relatively large; when the heating body unit (2) rotates to a position where same blocks the air duct (1a), the airflow discharged from the air duct (1a) flows through the heating body unit (2), such that the airflow blown by the fan is a hot airflow; and cold/hot airflow switching can be achieved by the driving mechanism (3) driving the heating body unit (2) to rotate, and the structure is simple and compact.

Description

Air duct components, wind wheel devices and blowing equipment

Cross references to related applications

This application is filed based on a Chinese patent application with an application number of 201910708188.8 and an application date of August 1, 2019, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated into this application by reference.

Technical field

This application designs the field of air conditioning technology, especially an air duct assembly, a wind wheel device and a blowing device.

Background technique

Take the heating fan as an example. In the related technology, the heating element is fixedly arranged in the air duct of the heating fan. As an example, the cold/hot air flow is switched. When hot air is required, the heating element generates heat, and the air flow passes through the heating element to be heated. Hot air blows out; in the case of the need to blow the cool air at room temperature, the heating element does not work, and the temperature does not change when the air flows through the heating element. The heating fan blows out the wind at room temperature. At this time, the heating fan functions as an ordinary fan. However, when the heating fan with this structure blows cool wind, the heating element forms a large wind resistance to the airflow, which seriously affects the air volume of the heating fan.

Summary of the invention

In view of this, the embodiments of the present application expect to provide an air duct assembly, a wind wheel device and a blowing device with a small wind resistance.

In order to achieve the above objective, the first aspect of the embodiments of the present application provides an air duct assembly, which includes a housing, a heating element unit and a driving mechanism. The housing is formed with an air duct, and the heating element unit is disposed on the air duct. In the duct; the driving mechanism is connected with the heating element unit to drive the heating element unit to rotate in the air duct.

Further, the air duct is formed with an air outlet, the first end of the housing is formed with an open groove, and the open groove is formed at the edge of the first end of the housing facing the air outlet. The heating element unit includes a heating body portion and a first shaft portion located at one end of the heating body portion, the first shaft portion can be handled from the first opening into the open groove, so that The heat generating main body part can be installed in the air duct from the air outlet.

Further, the heating main body portion includes a heating body and a mounting frame, the heating body is connected to the mounting frame, and the first shaft portion is disposed on a side of the mounting frame facing the open groove.

Further, the mounting frame includes two mounting parts, a first support part, and a limit switch. The two mounting parts are spaced apart along the rotation axis of the heating element unit, and the heating element is sandwiched between the two mounting parts. The first support portion is connected between the two mounting portions; the side of the first support portion facing away from the heating element forms a limit protrusion; the limit switch is arranged on the On the housing, the limit switch is signal-connected with the driving mechanism. During the rotation of the heating element unit, the limit protrusion can trigger the limit switch.

Further, the limiting protrusion includes a first protrusion and a second protrusion, the first protrusion and the second protrusion are spaced apart along the rotation axis of the heating element unit, and the first protrusion A protrusion and the second protrusion are arranged staggered along the rotation circumferential direction of the heating element unit; the limit switch includes a first trigger part that is matched with the first protrusion and a first trigger part that is matched with the second protrusion The second triggering portion of the first triggering portion and the second triggering portion are each signally connected to the driving mechanism.

Further, the housing includes a first end plate, a second end plate, and two side plates connected between the first end plate and the second end plate, the first end plate, the The second end plate and the two side plates jointly enclose the air duct; the limit switch is arranged on one of the side plates; the housing further includes a side plate formed on the corresponding side plate The first elastic piece is arranged between the first protrusion and the first trigger part; and/or, the housing further includes a first elastic piece formed on the corresponding side plate Two elastic pieces, the second elastic piece is arranged between the second protrusion and the second trigger portion.

Further, the driving mechanism is arranged on the first end plate of the housing, and the limit switch is arranged on an end of the side plate close to the first end plate.

Further, the housing includes a first end plate, a second end plate, and two side plates connected between the first end plate and the second end plate, the first end plate, the The second end plate and the two side plates jointly enclose the air duct; the air duct assembly further includes a shaft sleeve, the driving mechanism includes a motor shaft and a power part, and the opening of the slot is away from the The end of the first opening is formed as an arc-shaped hole, the sleeve is disposed in the arc-shaped hole and fits with the arc-shaped hole, and the sleeve is sleeved on the first shaft portion The motor shaft extends into the shaft sleeve and is drivingly connected to the first shaft portion, and the power portion abuts on a side of the shaft sleeve away from the heat generating body portion.

Further, the inner wall of the arc-shaped hole is formed with a stepped surface; the shaft sleeve forms a shoulder, and the shoulder abuts on the stepped surface.

Further, the housing includes a first end plate, a second end plate, and two side plates connected between the first end plate and the second end plate, the first end plate, the The second end plate and the two side plates jointly enclose the air duct; the heating element unit includes a second shaft portion at the other end of the heating main body, and the heating element unit passes through the first The second shaft portion is rotatably supported on the second end plate; a wire passing hole is formed in the second shaft portion to penetrate the second shaft portion in the axial direction.

Further, the second shaft portion includes a first division and a second division distributed along the circumference of the second shaft portion, the first division and the second division are detachably connected, the The first sub-section and the second sub-section are jointly enclosed to form the wire passing hole.

Further, a flange is formed on the second shaft portion, an installation through hole is formed on the second end plate, a part of the structure of the second shaft portion is located in the installation through hole, and the flange abuts Is connected to the top surface of the second end plate; an open wiring groove is formed on the second end plate, the wiring groove is formed with a second opening at the edge of the second end plate, the The wiring groove is communicated with the installation through hole.

A second aspect of the embodiments of the present application provides a wind wheel device, including an air duct assembly, a wind wheel, and a drive motor. The air duct assembly is any one of the above-mentioned air duct assemblies, and the wind wheel is arranged on the wind. On the road; the drive motor is connected to the wind wheel.

A third aspect of the embodiments of the present application provides a blowing device, including a housing and any one of the above-mentioned wind wheel devices. The housing is formed with an air inlet and an air outlet, and an installation cavity is formed in the housing. The duct device is arranged in the installation cavity, and the air duct is located on an air flow path connecting the air inlet and the air outlet.

The air duct assembly of the embodiment of the present application takes the air duct assembly applied to the heating fan as an example. When the driving mechanism drives the heating element unit to rotate to a position avoiding the air duct, the air flow from the air duct basically does not pass through the heating element unit, the heating fan The blown airflow is not heated and is cold or normal temperature. At this time, the heating element unit will not form wind resistance to the airflow, and the air volume of the heating fan is relatively large; when the heating element unit rotates to a position that blocks the air duct, the air discharged from the air duct The airflow flows through the heating element unit, that is, after heating, the airflow blown out by the heating fan is hot airflow; the rotation of the heating element unit is driven by the driving mechanism to realize the conversion of cold/hot airflow, and the structure is simple and compact.

Description of the drawings

Figure 1 is a schematic structural diagram of a wind turbine device according to an embodiment of the application;

Figure 2 is an exploded schematic diagram of the structure shown in Figure 1;

FIG. 3 is a schematic structural diagram of a housing according to an embodiment of the application;

Fig. 4 is a partial enlarged schematic diagram of A in Fig. 3;

5 is a schematic diagram of the structure of the mounting frame, the first shaft portion and the second shaft portion of an embodiment of the application;

Fig. 6 is a partial enlarged schematic diagram at B in Fig. 5;

FIG. 7 is a schematic diagram of the housing shown in FIG. 3 from another perspective;

Fig. 8 is a partial enlarged schematic diagram of C in Fig. 7;

FIG. 9 is a schematic diagram from another perspective of the structure shown in FIG. 1;

Fig. 10 is a schematic diagram of another view of the structure shown in Fig. 1;

Fig. 11 is a schematic diagram of the main body of the heating element in the structure shown in Fig. 10 in a position to avoid the air duct;

Fig. 12 is a schematic diagram of the main body of the heating element in the structure shown in Fig. 10 in a position to cover the air duct.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the application and the technical features in the embodiments can be combined with each other. The detailed description in the specific implementation should be understood as an explanation of the purpose of the application and should not be regarded as Improper restrictions on this application.

In the description of this application, "top", "bottom", "position or positional relationship are based on the position or positional relationship shown in Figure 1. It should be understood that these directional terms are only for the convenience of describing the application and simplifying The description does not indicate or imply that the pointed device or element must have a specific orientation, be configured and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

An embodiment of the present application provides an air duct assembly. Please refer to FIGS. 1 and 2. The air duct assembly 1000 includes a housing 1, a heating element unit 2 and a driving mechanism 3. An air duct 1a is formed in the housing 1, the heating element unit 2 is arranged in the air duct 1a, and the driving mechanism 3 is connected with the heating element unit 2 to drive the heating element unit 2 to rotate in the air duct 1a. Specifically, the heating element unit 2 has a rotation axis, and the driving mechanism 3 drives the heating element unit 2 to rotate around the rotation axis.

It should be noted that the air outlet and the air inlet merely refer to names, and do not specifically refer to the airflow entering from the air inlet and exiting from the air outlet. In other words, the airflow can enter the air duct from the air inlet and exit the air duct from the air outlet; or it can enter the air duct from the air outlet and then exit the air duct from the air inlet.

The air duct assembly 1000 of the embodiment of the present application takes the air duct assembly 1000 applied to a heating fan as an example. Please refer to FIG. 11. When the driving mechanism 3 drives the heating element unit 2 to rotate close to the inner wall of the air duct 1a, that is, the heating element unit 2 It is in a position to avoid the air duct 1a, so that the airflow discharged from the air duct 1a basically does not pass through the heating element unit 2. The heating element unit 2 basically does not form wind resistance to the airflow. In this case, the airflow blown by the heating fan is not heated, The fan blows cold wind or room temperature wind, and the air volume of the heating fan is relatively large; please refer to Figure 12, when the heating element unit 2 rotates to the position of blocking the air duct 1a, the air flow from the air duct 1a flows through the heating element unit 2, that is, passing In this case, the air blown by the heating fan is hot air. By driving the rotation of the heating element unit 2 by the driving mechanism 3, the cold/hot air flow can be converted. The structure is simple, and the heating element unit 2 does not occupy too much space, does not increase the size of the air duct 1a, and has a compact structure .

Please refer to Figure 7, the air duct 1a is formed with an air inlet 1a" and an air outlet 1a'; please refer to Figures 4, 8 and 9, the first end of the housing 1 is formed with an open groove 1b, the open groove 1b in the housing A first opening 1b' is formed at the edge of the first end of 1 facing the air outlet 1a', that is, the open groove 1b penetrates the edge of the first end of the housing 1. The heating element unit 2 includes a heating main body 20 and The first shaft portion 21 is located at one end of the heating main body portion 20. The first shaft portion 21 can be disposed into the opening groove 1b from the first opening 1b', so that the heating main body portion 20 can be inserted into the air duct 1a from the air outlet 1a' Inside.

During assembly, the avoidance design of the open slot 1b prevents the first end of the housing 1 from interfering with the assembly of the first shaft 21, and the heating element unit 2 can be pushed into the air duct 1a from the air outlet 1a' roughly horizontally That is, the general shape of the air outlet 1a' of the air duct 1a is adapted to the shape of the heating element unit 2, which facilitates the assembly of the heating element unit 2 directly from the air outlet 1a' into the air duct 1a, reducing the assembly Difficulty, simplify the assembly process.

The shape of the housing 1 can form an appropriate air duct 1a. In one embodiment, referring to FIG. 3, the housing 1 includes a first end plate 10, a second end plate 12, and two side plates 11 connected between the first end plate 10 and the second end plate 12, The plates 11 are arranged at intervals, the first end plate 10, the second end plate 12 and the two side plates 11 jointly enclose the aforementioned air duct 1 a, and the open groove 1 b is formed on the first end plate 10. It can be understood that the first end plate 10, the second end plate 12, and the two side plates 11 may be an integrally formed structure, that is, the housing 1 may be an integrally formed structure, such as an integrally formed injection molded part, or a split structure.

In an embodiment of the present application, please refer to FIG. 2. The heating body portion 20 includes a heating body 202 and a mounting frame 201. The heating body 202 is connected to the mounting frame 201, such as plug-in connection, and the first shaft portion 21 is provided on the mounting frame 201. To the side of the open groove 1b. The mounting frame 201 provides an installation position and installation space for the heating element 202, supports and protects the heating element 202 in rotation, and prevents the heating element 202 from directly contacting the housing 1 and causing scratch damage.

The heating element 202 can generate heat when energized. The specific form of the heating element 202 is not limited. For example, it may be a PTC (Positive Temperature Coefficient, positive temperature coefficient resistance) heater, an electric heating tube, and the like. In the embodiment of the present application, the structure of the heating element 202 is roughly in the shape of a plate with a certain thickness, and the airflow can pass through the heating element 202.

In an embodiment, referring to FIG. 5, the mounting frame 201 includes a first support portion 2012 and two mounting portions 2011 arranged at intervals. The first support portion 2012 is connected between the two mounting portions 2011, and the two mounting portions 2011 are along the heating element unit. The heating element 202 is interposed between the two mounting parts 2011, that is, the top of the heating element 202 is connected to one of the mounting parts 2011, and the bottom of the heating element 202 is connected to the other mounting part 2011. The heating element 202 and the first supporting portion 2012 are arranged side by side, and the first supporting portion 2012 is approximately located on the rotation axis of the heating element unit 2.

In order to strengthen the structural strength of the mounting frame 201, please continue to refer to FIG. 5. The mounting frame 201 further includes a second support portion 2013, which is connected between the two mounting portions 2011, and the second support portion 2013 and the first support portion 2012 is arranged at intervals, and the heating element 202 is located between the first support portion 2012 and the second support portion 2013. That is to say, the mounting frame 201 is roughly in the shape of a mouth, and the mounting frame 201 is arranged around the contour of the heating element 202. The heating element 202 has a good protective effect, and can also have a good structural strength to prevent the mounting frame 201 from being deformed during the rotation.

Please refer to FIG. 2, the driving mechanism 3 is disposed on the first end plate 10, and the driving mechanism 3 is drivingly connected with the first shaft portion 21. Exemplarily, the driving mechanism 3 includes a motor shaft 32 and a power part 31, that is, in this embodiment, the driving mechanism 3 is a motor. The first shaft portion 21 is clamped into the opening groove 1b from the first opening 1b' of the opening groove 1b, the power portion 31 is supported on the top of the first end plate 10, and the motor shaft 32 penetrates the opening groove 1b and is connected to the first opening 1b. The shaft 21 is drivingly connected, and the motor shaft 32 drives the first shaft 21 to drive the entire heating element unit 2 to rotate. The motor shaft 32 can also axially position the heating element unit 2 to prevent the heating element unit 2 from moving in the axial direction.

The first shaft portion 21 may sway sideways in the open groove 1b, thereby causing the heating element unit 2 to rotate unevenly. To this end, please refer to FIG. 10. In one embodiment, the air duct assembly 1000 further includes a shaft sleeve 5, which is sleeved on the first shaft portion 21, and the motor shaft 32 extends into the shaft sleeve 5 and is connected to the first shaft The portion 21 is drivingly connected, and the sleeve 5 can limit the circumferential direction of the first shaft portion 21 to prevent the first shaft portion 21 from shaking in the lateral direction. In order to facilitate the positioning and installation of the sleeve 5, please refer to FIG. 4. In an embodiment of the present application, the end of the open groove 1b facing away from the first opening 1b' is formed as an arc-shaped hole 1b", and the sleeve 5 is arranged in a circle In the arc-shaped hole 1b", and the sleeve 5 fits with the arc-shaped hole 1b", that is, the outer diameter of the sleeve 5 is roughly equivalent to the inner diameter of the arc-shaped hole 1b", so as to compare the sleeve 5 Good circumferential positioning. The power part 31 abuts on the side of the sleeve 5 away from the heating main body part 20, that is, the power part 31 abuts on the top side of the sleeve 5, so that the shaft sleeve 5 is axially limited by the power part 31 Therefore, the shaft sleeve 5 can be positioned and installed without a fastening connection with screws, which can simplify the assembly process and the installation structure.

In order to facilitate the support and positioning of the shaft sleeve 5, in the embodiment of the present application, please continue to refer to FIG. 4, the inner wall of the arc-shaped hole 1b" is formed with a stepped surface 1b'", and the shaft sleeve 5 forms a shoulder 5a (refer to Fig. 2) , The shoulder 5a abuts on the step surface 1b'”, and the sleeve 5 is supported by the step surface 1b'”. The bottom end of the sleeve 5 does not need to abut on the mounting portion 2011, the sleeve 5 and the mounting portion 2011 No rotational friction is generated between them, and the rotational resistance of the heating element unit 2 can be reduced.

Since the open groove 1b penetrates the edge of the first end plate 10, the open groove 1b will reduce the structural strength of the first end plate 10 to a certain extent. For this reason, please refer to FIGS. 4 and 9. In one embodiment, the housing 1 also includes reinforcing members 13, which are connected to the laterally opposite sides of the open groove 1b. The reinforcing members 13 function as structures connecting the laterally opposite sides of the open groove 1b, and can strengthen the structural strength of the first end plate 10. .

In order to facilitate the installation and fixation of the power part 31, please refer to FIGS. 4 and 9, a stud 101 is formed on the top of the first end plate 10, and a lug 311 is formed on the surface of the power part 31. The lug 311 and the stud 101 are connected by screws. Fasten the connection. It should be noted that the drive connection between the motor shaft 32 and the first shaft portion 21 needs to be aligned in orientation. Specifically, after the motor shaft 32 is inserted into the sleeve 5, it may need to rotate a certain angle to make the motor shaft 32 and The first shaft portion 21 is drivingly connected. After rotating a certain angle, the lug 311 may not be aligned with the stud 101 and cannot be tightly connected. Therefore, the power portion 31 needs to be rotated again until the lug 311 is aligned with the stud 101 quasi. During the rotation of the power part 31, it is necessary to prevent the reinforcement 13 from interfering with the power part 31. To this end, the inner wall of the reinforcing member 13 is formed with an arc surface curved toward the arc-shaped hole 1b". The center of the arc surface is the same as the rotation center of the motor shaft 32. The power unit 31 can be in a circle with the motor shaft 32 as the rotation center. That is to say, the reinforcing member 13 will not interfere with the rotation of the power part 31, and the inner side of the reinforcing member 13 is approximately a circular arc surface. The shape of the reinforcing member 13 can increase the extension length of the reinforcing member 13, and further Strengthen the structural strength of the first end plate 10.

1 and 2, in one embodiment, the air duct assembly 1000 further includes a limit switch 4, the limit switch 4 is disposed on the housing 1, for example, the limit switch 4 is disposed on one of the side plates 11; And the limit switch 4 is signally connected with the driving mechanism 3. A limit protrusion is formed on the side of the first support portion 2012 facing away from the heating element 202. The limit protrusion can trigger the limit switch 4 during the rotation of the heating element unit 2. When the heating element unit 2 rotates to the position where the limit protrusion contacts the limit switch 4, the limit protrusion presses the limit switch 4, the limit switch 4 is triggered, and the driving mechanism 3 stops rotating.

Exemplarily, referring to FIG. 6, the limiting protrusion includes a first protrusion 20a and a second protrusion 20b. The first protrusion 20a and the second protrusion 20b are arranged at intervals along the rotation axis direction, and the first protrusion 20a The second protrusion 20b and the second protrusion 20b are arranged staggered along the rotation circumferential direction of the heating body unit 2. The limit switch 4 includes a first trigger portion (not shown) corresponding to the first protrusion 20a, and a second trigger portion (not shown) corresponding to the second protrusion 20b. The first trigger portion and the second trigger The parts are each signal-connected to the drive mechanism 3.

When the heating element unit 2 rotates to a position that blocks the air duct 1a, the first protrusion 20a can squeeze the first trigger part, and the driving mechanism 3 stops rotating, so that the heating element unit 2 stops rotating; when the driving mechanism 3 drives the heating element unit 2 Rotate to the position of avoiding the air duct 1a, the second protrusion 20b can squeeze the second trigger part, the driving mechanism 3 stops rotating, so that the heating element unit 2 stops rotating. In the embodiment of the present application, the first protrusion 20a and the second protrusion 20b are formed on the surface of the first support portion 2012, and the first protrusion 20a and the second protrusion 20b only need a small structural volume. It does not interfere with occupying the position of the rotational connection between the opposite ends of the heating element unit 2 and the housing 1, which can make the structure of the air duct assembly 1000 compact.

In order to avoid damage to the first trigger part when the first protrusion 20a squeezes the first trigger part, please refer to FIG. 8. The housing 1 further includes a first elastic piece 141 formed on the corresponding side plate 11. The elastic piece 141 is disposed between the first protrusion 20a and the first trigger portion. The first protrusion 20a squeezes the first elastic piece 141, and the first elastic piece 141 acts on the first trigger portion to trigger the first trigger portion. That is, the first protrusion 20a does not directly contact the first trigger portion, which prevents The first protrusion 20a scrapes off the first trigger portion laterally. When the first protrusion 20a leaves the first elastic piece 141, the first elastic piece 141 can be reset.

Referring to FIG. 8, in order to avoid damage to the second triggering portion when the second protrusion 20b squeezes the second triggering portion, the housing 1 further includes a second elastic piece 142 formed on the corresponding side plate 11. The elastic piece 142 is disposed between the second protrusion 20b and the second trigger portion. The second protrusion 20b squeezes the second elastic piece 142, and the second elastic piece 142 acts on the second triggering portion to trigger the second triggering portion. That is, the second protrusion 20b does not directly contact the second triggering portion to avoid The second protrusion 20b scrapes off the second trigger portion laterally. When the second protrusion 20b leaves the second elastic piece 142, the second elastic piece 142 can be reset.

The signal connection between the limit switch 4 and the driving mechanism 3 can be indirect connection through the circuit board. Specifically, the limit switch 4 is connected with the circuit board signal, the circuit board and the driving mechanism 3 signal, and the circuit board sends out the signal according to the limit switch 4. The signal to control the rotation of the drive mechanism 3.

In order to facilitate the wiring between the limit switch 4, the circuit board and the driving mechanism 3, the limit switch 4 is arranged at one end of the side plate 11 close to the first end plate 10, which facilitates centralized wiring.

In an embodiment, referring to FIG. 5, the heating element unit 2 includes a second shaft portion 22 located at the other end of the heating body portion 20, and the heating element unit 2 is rotatably supported on the housing 1 through the second shaft portion 22, specifically , Supported on the second end plate 12. Further, the second shaft portion 22 is formed with a wire passing hole 22a that penetrates the first shaft portion 21 in the axial direction. The cable hole 22a can pass the power supply line. Specifically, the wire can be inserted from the bottom of the first shaft portion 21, and connected to the heating element 202 after passing through the top of the first shaft portion 21. This can prevent the main body portion 20 from heating. Squeeze the wire during rotation.

Further, please continue to refer to FIG. 5, the second shaft portion 22 includes a first portion 221 and a second portion 222 distributed along the circumferential direction of the second shaft portion 22, the first portion 221 is fixedly connected to the mounting frame 201, A sub-part 221 and a second sub-part 222 are detachably connected, and the first sub-part 221 and the second sub-part 222 are jointly enclosed as a threaded hole 22a, that is, the second shaft part 22 is divided into sections along the circumferential direction. The first division 221 and the second division 222. The structure of the first sub-part 221 and the second sub-part 222 facilitates the threading operation. Generally, the end of the wire connected to the heating element 202 may have a larger size connector. If the second shaft portion 22 is not split into the first sub-section 221 and the second sub-section 222, the wire will pass through The assembling operation of the second shaft portion 22 is difficult and time-consuming. In the embodiment of the present application, during assembly, the wires are inserted into the first sub-part 221, and then the second sub-part 222 is buckled on the first sub-part 221, so that the wires can be easily threaded.

In an embodiment, referring to FIGS. 3 and 5, a flange 223 is formed on the second shaft portion 22, a mounting through hole 121 is formed on the second end plate 12, and a part of the structure of the second shaft portion 22 is located in the mounting through hole. 121, the flange 223 abuts against the top surface of the second end plate 12, that is to say, the second shaft portion 22 is supported on the second end plate 12 through the flange 223; the second end plate 12 is formed with an open track The wiring groove 120 is formed with a second opening 120 a at the edge of the second end plate 12, and the wiring groove 120 is in communication with the installation through hole 121. When assembling, first connect the heating element unit 2 and the wire, and then push the heating element unit 2 into the air duct 1a. At the same time, the wire enters the wire slot 120 from the second opening 120a, and finally follows the second shaft. 22 enters the installation through hole 121, so that the modular installation of the heating element unit 2 can be realized.

A second aspect of the embodiments of the present application provides a wind wheel device, which includes a wind wheel 7, a drive motor 8, and any one of the aforementioned air duct components. The wind wheel 7 is arranged on the air duct 1a, and the driving motor 8 is connected with the wind wheel 7 to drive the wind wheel 7 to rotate.

In one embodiment, the driving motor 8 is arranged at the bottom of the housing 1, and the driving mechanism 3 is arranged at the top of the housing 1, so that the space at the bottom and the top of the housing 1 can be fully utilized, making the wind turbine device compact.

The third aspect of the embodiments of the present application provides a blowing device, including a housing (not shown) and any one of the above-mentioned wind wheel devices, the housing is formed with an air inlet (not shown) and an air outlet (not shown) An installation cavity is formed in the housing, the wind wheel device is arranged in the installation cavity, and the air duct 1a is located on the air flow path connecting the air inlet and the air outlet.

When the blowing device of the embodiment of the present application needs to blow hot air, the driving mechanism 3 drives the heating body part 20 to rotate to cover the air duct 1a. When it is necessary to blow room temperature wind or cold air, the driving mechanism 3 drives the heating body part 20 to rotate close to The side plate 11 is such that the airflow basically does not flow through the heating main body portion 20.

The blowing device can be a heater fan, a heater fan, an air conditioner, a cold fan, etc., and there is no restriction here.

The various embodiments/implementations provided in this application can be combined with each other without conflicts.

The above descriptions are only preferred embodiments of the application, and are not used to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

Air duct components, including:

A casing, in which an air duct is formed;

A heating element unit, the heating element unit is arranged in the air duct;

A driving mechanism, which is connected to the heating element unit to drive the heating element unit to rotate in the air duct.
The air duct assembly according to claim 1, wherein the air duct is formed with an air outlet, the first end of the housing is formed with an open groove, and the open groove is at the first end of the housing facing the outlet A first opening is formed at the edge of one side of the tuyere; the heating element unit includes a heating main body portion and a first shaft portion located at one end of the heating main body portion, and the first shaft portion can be handled through the first opening In the open groove, the heat generating main body can be inserted into the air duct from the air outlet.
The air duct assembly according to claim 2, wherein the heating main body includes a heating element and a mounting frame, the heating element is connected to the mounting frame, and the first shaft portion is disposed in the direction of the mounting frame. Open one side of the groove.
The air duct assembly of claim 3, the mounting frame comprises:

Two mounting parts, the two mounting parts are spaced apart along the rotation axis of the heating element unit, and the heating element is sandwiched between the two mounting parts;

A first supporting part, the first supporting part is connected between the two mounting parts; the side of the first supporting part facing away from the heating element forms a finite protrusion;

A limit switch, the limit switch is arranged on the housing, and the limit switch is signally connected to the driving mechanism. During the rotation of the heating element unit, the limit protrusion can trigger the Limit switch.
The air duct assembly according to claim 4, wherein the limiting protrusion includes a first protrusion and a second protrusion, and the first protrusion and the second protrusion are along a rotation axis of the heating element unit The first protrusions and the second protrusions are arranged at intervals along the rotation circumference of the heating element unit; the limit switch includes a first trigger part and a A second triggering portion matched with the second protrusion, the first triggering portion and the second triggering portion are respectively connected to the driving mechanism in signal.
The air duct assembly according to claim 5, the housing includes a first end plate, a second end plate, and two side plates connected between the first end plate and the second end plate, so The first end plate, the second end plate and the two side plates jointly enclose the air duct; the limit switch is arranged on one of the side plates;

The housing further includes a first elastic piece formed on the corresponding side plate, and the first elastic piece is disposed between the first protrusion and the first trigger portion; and/or, the housing The body further includes a second elastic piece formed on the corresponding side plate, and the second elastic piece is arranged between the second protrusion and the second trigger portion.
The air duct assembly according to claim 5, wherein the driving mechanism is arranged on the first end plate of the housing, and the limit switch is arranged on an end of the side plate close to the first end plate.
The air duct assembly according to claim 2, the housing includes a first end plate, a second end plate, and two side plates connected between the first end plate and the second end plate, so The first end plate, the second end plate, and the two side plates jointly enclose the air duct; the air duct assembly further includes a shaft sleeve, and the driving mechanism includes a motor shaft and a power part, The end of the open slot facing away from the first opening is formed as an arc-shaped hole, the shaft sleeve is disposed in the arc-shaped hole and fits with the arc-shaped hole, and the shaft sleeve is sleeved On the first shaft portion, the motor shaft extends into the shaft sleeve and is drivingly connected to the first shaft portion, and the power portion abuts on the shaft sleeve that faces away from the heat generating body portion One side.
The air duct assembly according to claim 8, wherein the inner wall of the arc-shaped hole is formed with a stepped surface; the shaft sleeve forms a shaft shoulder, and the shaft shoulder abuts on the stepped surface.
The air duct assembly of claim 2, wherein the housing includes a first end plate, a second end plate, and two side plates connected between the first end plate and the second end plate, so The first end plate, the second end plate and the two side plates jointly enclose the air duct; the heating element unit includes a second shaft portion located at the other end of the heating main body portion, so The heating element unit is rotatably supported on the second end plate through the second shaft portion; a wire hole that penetrates the second shaft portion in the axial direction is formed in the second shaft portion.
The air duct assembly according to claim 10, the second shaft portion includes a first portion and a second portion distributed along a circumferential direction of the second shaft portion, the first portion and the second portion The sub-sections are detachably connected, and the first sub-section and the second sub-section are jointly enclosed to form the wire passing hole.
The air duct assembly according to claim 10, wherein a flange is formed on the second shaft portion, a mounting through hole is formed on the second end plate, and a part of the structure of the second shaft portion is located in the mounting through hole. In the hole, the flange abuts against the top surface of the second end plate; an open wiring groove is formed on the second end plate, and the wiring groove is at the edge of the second end plate A second opening is formed, and the wire routing groove communicates with the installation through hole.
Wind turbine device, including:

An air duct assembly, the air duct assembly being the air duct assembly according to any one of claims 1-12,

A wind wheel, the wind wheel is arranged on the air duct;

The driving motor is connected with the wind wheel.
A blowing device comprising a housing and the wind wheel device according to claim 13, the housing is formed with an air inlet and an air outlet, an installation cavity is formed in the housing, and the air duct device is arranged in the installation cavity, The air duct is located on an air flow path connecting the air inlet and the air outlet.