Air pipe assembly and blower

Abstract

The utility model provides an air pipe assembly which comprises an air cylinder extending in the axial direction, the air cylinder comprises an air inlet end, an air outlet end opposite to the air inlet end in the axial direction and an airflow channel located between the air inlet end and the air outlet end in the axial direction, and a plurality of inner plates extending in the axial direction are arranged in the air cylinder. The multiple inner plates are sequentially arranged in the circumferential direction perpendicular to the axial direction, each inner plate is provided with a first position axially extending in the air duct and a second position attached to the inner wall of the air duct, and the airflow channels comprise the first airflow channel when the inner plates are located at the first positions and the second airflow channel when the inner plates are located at the second positions. The radial size of the first airflow channel is smaller than that of the second airflow channel. According to the air pipe assembly, the variable-caliber air duct structure is adopted, different blowing forces of the blower can be achieved by changing the blowing caliber of the air pipe assembly, and the problem that a user needs to carry about accessories and manually replace the accessories is solved.

Description

Technical Field

[0001] This utility model relates to the field of garden tool technology, and in particular to a duct assembly and a blower. Background Technology

[0002] Most current hair dryers use a single-tube design, with airflow and blowing power adjusted primarily by controlling the speed via a speed switch. Some hair dryers come with accessories of different nozzle diameters or shapes, allowing users to adapt to different situations. However, carrying these accessories to change nozzle diameters is inconvenient for users. Utility Model Content

[0003] The purpose of this utility model is to provide a duct assembly and a hair dryer, aiming to solve the problem that existing hair dryers require changing parts to alter the airflow diameter, making operation inconvenient for users. Corresponding modifications.

[0004] To solve the above-mentioned technical problems, the present invention provides a duct assembly, including an axially extending duct. The duct includes an air inlet end, an air outlet end axially opposite to the air inlet end, and an airflow channel located axially between the air inlet end and the air outlet end. The duct is provided with a plurality of axially extending inner plates, which are arranged sequentially in a circumferential direction perpendicular to the axial direction. Each inner plate has a first position axially extending within the duct and a second position abutting against the inner wall of the duct. The airflow channel includes a first airflow channel when the inner plate is in the first position and a second airflow channel when the inner plate is in the second position. The radial dimension of the first airflow channel is smaller than the radial dimension of the second airflow channel.

[0005] Preferably, the inner plate comprises:

[0006] A connecting part is located inside the air duct and near the air inlet end, and one end of the connecting part is connected to the inner wall of the air duct; from the end of the connecting part near the air inlet end to the end of the connecting part near the air outlet end, the circumferential dimension of the connecting part gradually decreases.

[0007] The plate body extends along the axial direction of the air duct, with one end of the plate body located inside the air duct and connected to the end of the connecting portion away from the air inlet end.

[0008] Preferably, the connecting part is an elastic connecting part made of elastic material, so that the plate body part can move relative to the air duct toward and away from the central axis of the air duct.

[0009] Preferably, a sealing element is provided between the connecting part and the main body of the plate.

[0010] Preferably, when the inner plate is in the second position, the plurality of inner plates are arranged at intervals in the circumferential direction and each inner plate abuts against the inner wall of the air duct to form the second airflow channel, and the shape of the inner plate is adapted to the shape of the air duct.

[0011] Preferably, when the inner plate is in the first position, the plurality of inner plates extend axially inside the air duct and each inner plate is attached to each other to form the first airflow channel, and the inner plate separates the first airflow channel from the space inside the air duct.

[0012] Preferably, the inner plate is provided with a magnetic attraction structure, and when the inner plate is in the first position, multiple inner plates are magnetically connected in sequence to form the first airflow channel; and / or, when the inner plate is in the second position, multiple inner plates are magnetically connected to the inner wall of the air duct to form the second airflow channel.

[0013] Preferably, four inner plates are provided.

[0014] Preferably, the end of the inner plate furthest from the air inlet extends axially out of the air outlet.

[0015] To achieve the above objectives, this utility model also provides a hair dryer, comprising:

[0016] Hair dryer body, wherein the hair dryer body is provided with a blower nozzle;

[0017] The air duct assembly is the air duct assembly described above, wherein the air inlet end of the air duct of the air duct assembly is fitted onto the air outlet.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The duct assembly of this utility model has multiple inner plates inside the air duct. When the multiple inner plates are in the first position, they extend axially inside the air duct to form a first airflow channel, through which the air duct assembly discharges air. When the multiple inner plates are in the second position, they separate and adhere to the inner wall of the air duct to form a second airflow channel, through which the air duct assembly discharges air directly through the air duct. Thus, the duct assembly adopts a variable diameter air duct structure. By changing the size of the air outlet of the duct assembly, different blowing forces of the blower can be achieved, solving the problem of users having to carry accessories and manually replace accessories in the prior art. Attached Figure Description

[0020] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0021] Figure 1 This is a schematic diagram of the duct assembly in an embodiment of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the central duct assembly after the air duct is removed;

[0023] Figure 3 for Figure 1 A schematic diagram of the structure after the inner plate is adjusted to the second position;

[0024] Figure 4 for Figure 3 A schematic diagram of the central duct assembly after the air duct is removed;

[0025] Figure 5 This is a schematic diagram of the structure of the hair dryer in an embodiment of this utility model.

[0026] Explanation of reference numerals in the accompanying drawings of this utility model:

[0027] Hair dryer 1000, air duct assembly 100, air tube 1, air inlet 11, air outlet 12, inner plate 2, connecting part 21, elastic connecting part 21a, plate body part 22, first airflow channel 3, hair dryer body 200.

[0028] 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

[0029] 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 protection scope of the present utility model.

[0030] 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 certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0031] 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 indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, 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. If 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.

[0032] This utility model provides a duct assembly that can be used in garden tools such as hair dryers. The following description will use the application of this duct assembly in a hair dryer as an example. Figures 1 to 4 A preferred embodiment of the duct assembly provided by this utility model is shown.

[0033] Please see Figures 1 to 4 In this embodiment, the duct assembly 100 includes an axially extending duct 1 and an inner plate 2. The duct 1 includes an air inlet end 11, an air outlet end 12 axially opposite to the air inlet end, and an airflow channel located axially between the air inlet end 11 and the air outlet end 12. The duct is provided with a plurality of inner plates 2 extending axially. The plurality of inner plates are arranged sequentially in a circumferential direction perpendicular to the axial direction. The inner plate 2 has a first position extending axially within the duct and a second position fitting against the inner wall of the duct. The airflow channel includes a first airflow channel 3 when the inner plate is in the first position and a second airflow channel when the inner plate is in the second position. The radial dimension of the first airflow channel 3 is smaller than the radial dimension of the second airflow channel.

[0034] Specifically, the ventilation duct 1 is typically a straight cylinder with open ends. The axis of the ventilation duct 1 is defined as the front-to-back direction, with the inlet end 11 being the rear end and the outlet end 12 being the front end. Airflow enters the ventilation duct 1 from the inlet end 11 and exits from the outlet end 12. The ventilation duct 1 can be a single piece; alternatively, it can be a multi-segment structure, with multiple segments joined together to form a complete ventilation duct 1.

[0035] The inner plate 2 extends along the front-to-back direction. The rear end of the inner plate 2 is located inside the air duct 1 and near the air inlet 11. The surface of the inner plate 2 furthest from the central axis of the air duct 1 is defined as the outer surface of the inner plate 2, and the surface of the inner plate 2 closest to the central axis of the air duct 1 is defined as the inner surface of the inner plate 2. The front end of the inner plate 2 can be located inside the air duct 1; alternatively, the front end of the inner plate 2 can partially extend forward from the air outlet 12 outside the air duct 1. Multiple inner plates 2 are provided, and these multiple inner plates 2 are arranged circumferentially along the air duct 1. The rear ends of the multiple inner plates 2 are connected to the inner wall of the air duct 1 and are sequentially connected along the circumference of the air duct 1. The front ends of the multiple inner plates 2 are movable relative to the air duct 1, either towards or away from the central axis of the air duct 1. Multiple inner plates 2 are moved with their front ends facing away from the central axis of the air duct 1, and the multiple inner plates 2 are separated from each other until the multiple inner plates 2 are moved to the second position. At this time, the air inlet 11 is connected to the air outlet 12 to form the second airflow channel, so that the airflow flows into the air duct 1 from the air inlet 11 and then flows out of the air duct 1 from the air outlet 12, so that the air duct assembly 100 can directly output air through the air duct 1. The air outlet diameter of the air duct assembly 100 is the same as the outlet diameter of the air outlet 12, and the air duct assembly 100 is a large diameter mode.

[0036] Multiple inner plates 2 are moved toward the central axis of the air duct 1, causing them to move closer together until they reach a first position. The inner plates 2 are then joined together along the circumference of the air duct 1, forming a first airflow channel 3 extending in the front-to-back direction within the air duct. The rear end of the first airflow channel 3 is located inside the air duct 1 and is connected to the air inlet 11. At this time, the airflow flows into the air duct 1 from the air inlet 11 and then flows out of the air duct 1 through the first airflow channel 3, allowing the air duct assembly 100 to discharge air through the first airflow channel 3. The diameter of the air outlet of the air duct assembly 100 is the diameter of the front end of the first airflow channel 3. Since the outer surfaces of the front ends of the multiple inner plates 2 are spaced apart from the inner wall of the air duct 1, the diameter of the front end of the first airflow channel 3 is smaller than the diameter of the air outlet 12. Therefore, the air duct assembly 100 is a small-diameter model.

[0037] The duct assembly 100 offers two air outlet diameters for users to choose from, while also maintaining a unified design that aligns with the development trend of garden tools. Through the integrated design of the duct 1, the duct assembly 100 allows different air outlet diameters to meet various working conditions, while also solving the problem of users carrying and manually replacing accessories.

[0038] The duct assembly 100 of this utility model has multiple inner plates 2 arranged inside the air duct 1. When the multiple inner plates 2 are adjusted to the first position, the multiple inner plates 2 surround to form a first airflow channel 3. At this time, the duct assembly 100 exhausts air through the first airflow channel 3, which has a smaller diameter than the air duct 1. When the multiple inner plates 2 are adjusted to the second position, the multiple inner plates 2 separate and are close to the inner wall of the air duct 1. At this time, the duct assembly 100 exhausts air directly through the air duct 1. Thus, the duct assembly 100 adopts a variable diameter air duct 1 structure. By changing the size of the air outlet of the duct assembly 100, different blowing forces of the blower 1000 can be achieved, solving the problem of users having to carry accessories and manually replace accessories in the prior art.

[0039] The specific number of inner panels 2 can be set according to the actual situation. For example, there can be two, three, four, or more inner panels 2. Optionally, please refer to Figures 1 to 4 In this embodiment, four inner plates 2 are provided. The four inner plates 2 can be easily spliced ​​together to form a sealed first airflow channel 3. The following description will take the case of four inner plates 2 as an example.

[0040] As described above, the front end of the inner panel 2 can be located inside the air duct 1; alternatively, the front end of the inner panel 2 can also extend partially forward from the air outlet 12 outside the air duct 1. Alternatively, please refer to... Figures 1 to 4 In this embodiment, the end of the inner plate 2 away from the air inlet 11 extends axially to the air outlet 12.

[0041] Specifically, the front end of the inner plate 2 extends forward from the air outlet 12 to the outside of the air duct 1, so that the part of the inner plate 2 outside the air duct 1 forms a protrusion for user operation. The user can manually operate the protrusion of the inner plate 2 to make the four inner plates 2 move closer to each other and separate from each other, thereby changing the size of the air outlet of the air duct assembly 100 and realizing different blowing power of the blower 1000.

[0042] When the inner plate 2 is in the second position, the front end of the inner plate 2 can be spaced apart from the inner wall of the air duct 1; the front end of the inner plate 2 can also abut against the inner wall of the air duct 1. Optionally, please refer to Figures 1 to 4 In this embodiment, when the inner plate 2 is in the second position, the inner plate 2 abuts against the inner wall of the air duct 1. This abutment between the inner plate 2 and the inner wall of the air duct 1 allows for the movable positioning of the inner plate 2 in the second position.

[0043] Further, please refer to Figures 1 to 4In this embodiment, when the inner plate 2 is in the second position, the plurality of inner plates are arranged at intervals in the circumferential direction and each inner plate abuts against the inner wall of the air duct to form the second airflow channel. The shape of the inner plate is adapted to the shape of the air duct. When the inner plate is in the first position, the plurality of inner plates extend axially into the air duct and each inner plate fits against each other to form the first airflow channel 3. The inner plate 2 separates the first airflow channel from the space inside the air duct and reduces the wind resistance formed by the inner plate 2. For example, the air duct 1 is usually cylindrical and the inner plate 2 is an arc-shaped plate.

[0044] Optionally, please refer to Figures 1 to 4 In this embodiment, the inner plate 2 includes a connecting part 21 and a plate body part 22. The connecting part 21 is located inside the air duct 1 and close to the air inlet end 11. One end of the connecting part 21 is connected to the inner wall of the air duct 1. From the end of the connecting part 21 close to the air inlet end 11 to the end of the connecting part 21 close to the air outlet end 12, the size of the connecting part 21 in the circumferential direction of the air duct 1 gradually decreases. The plate body part 22 extends along the axial direction of the air duct 1. One end of the plate body part 22 is located inside the air duct 1 and connected to the end of the connecting part 21 away from the air inlet end 11.

[0045] Specifically, the connecting portion 21 is arranged such that its circumferential dimension gradually decreases from back to front in the air duct 1. Thus, when the multiple inner plates 2 are adjusted to the first position, the connecting portions 21 of the multiple inner plates 2 enclose and form a variable-diameter section of the first airflow channel 3, and the radial dimension of the variable-diameter section of the first airflow channel 3 gradually decreases from back to front. When the multiple inner plates 2 are adjusted to the first position, the main body portions 22 of the multiple inner plates 2 enclose and form a constant-diameter section of the first airflow channel 3, and the radial dimension of the constant-diameter section of the first airflow channel 3 remains unchanged from back to front. This arrangement of the inner plate 2 shape facilitates the formation of a sealed first airflow channel 3 by the multiple inner plates 2.

[0046] There are various specific arrangements to enable the main body 22 of the plate to move relative to the air duct 1. For example, the rear end of the connecting part 21 is rotatably connected to the inner wall of the air duct 1, thereby enabling the main body 22 of the plate to move relative to the air duct 1. Alternatively, please refer to... Figures 1 to 4 In this embodiment, the connecting part 21 is an elastic connecting part 21a made of elastic material, so that the plate body part 22 can move relative to the air duct 1 toward the central axis of the air duct 1 and away from the central axis of the air duct 1.

[0047] Specifically, the connecting part 21 can be made of an elastic material such as rubber, so that the connecting part 21 is an elastic connecting part 21a that can be elastically deformed. In this way, the plate body part 22 is connected to the inner wall of the air duct 1 through the elastic connecting part 21a, so that the plate body part 22 can move toward the central axis of the air duct 1 and away from the central axis of the air duct 1 relative to the air duct 1.

[0048] Optionally, in this embodiment, a sealing element (not shown in the figure) is provided between the connecting part 21 and the plate body part 22.

[0049] Specifically, a sealing ring or other sealing element is provided between the connecting part 21 and the main body part 22, so that when the multiple inner plates 2 are enclosed to form the first airflow channel 3, the sealing element can prevent air leakage at the connection between the connecting part 21 and the main body part 22.

[0050] Optionally, please refer to Figures 1 to 4 In this embodiment, the inner wall of the air duct 1 is provided with multiple corresponding grooves on the plate main body portions 22, the shape of the grooves being adapted to the shape of the plate main body portions 22; when the inner plate 2 is in the second position, each plate main body portion 22 is embedded in a corresponding groove. In this way, through the cooperation between the plate main body portion 22 and the groove, the movable positioning of the inner plate 2 in the second position can be achieved, and the embedding of the plate main body portion 22 into the groove can reduce the wind resistance formed by the inner plate 2 when the air duct assembly 100 is in the large-diameter mode.

[0051] Optionally, in this embodiment, the inner plate 2 is provided with a magnetic attraction structure (not shown in the figure). When the inner plate is in the first position, multiple inner plates are magnetically connected in sequence to form the first airflow channel; and / or, when the inner plate is in the second position, multiple inner plates are magnetically connected to the inner wall of the air duct to form the second airflow channel.

[0052] Specifically, the main body 22 of the plate is provided with a magnetic attraction structure. When the multiple inner plates 2 are in the second position, the main body 22 of each inner plate 2 can be magnetically attracted and fixed to the inner wall of the air duct 1. At this time, the elastic connecting part 21a of each inner plate 2 is also attached to the inner wall of the air duct 1. When the multiple inner plates 2 are in the first position, the main body 22 of the multiple inner plates 2 can be magnetically attracted to each other and attached together. At this time, the elastic connecting parts 21a of the multiple inner plates 2 can also be attached together.

[0053] This utility model also provides a hair dryer. Figure 5 A preferred embodiment of the hair dryer provided by this utility model is shown.

[0054] Please see Figure 5 In this embodiment, the hair dryer 1000 includes a duct assembly 100 and a hair dryer body 200, the hair dryer body 200 being provided with an air outlet; the air inlet end 11 of the air duct 1 of the duct assembly 100 is fitted onto the air outlet. Since the duct assembly 100 adopts the technical solution of the above embodiment, it has the beneficial effects brought about by the technical solution of the above embodiment.

[0055] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A duct assembly comprising an axially extending duct, the duct including an air inlet end, an air outlet end axially opposite to the air inlet end, and an airflow channel axially located between the air inlet end and the air outlet end, characterized in that, The air duct is provided with a plurality of inner plates extending along the axial direction. The plurality of inner plates are arranged sequentially in a circumferential direction perpendicular to the axial direction. The inner plates have a first position extending axially within the air duct and a second position fitting against the inner wall of the air duct. The airflow channel includes a first airflow channel when the inner plate is in the first position and a second airflow channel when the inner plate is in the second position. The radial dimension of the first airflow channel is smaller than the radial dimension of the second airflow channel.

2. The duct assembly as described in claim 1, characterized in that, The inner plate includes: A connecting part is located inside the air duct and near the air inlet end, and one end of the connecting part is connected to the inner wall of the air duct; from the end of the connecting part near the air inlet end to the end of the connecting part near the air outlet end, the circumferential dimension of the connecting part gradually decreases. The plate body extends along the axial direction of the air duct, with one end of the plate body located inside the air duct and connected to the end of the connecting portion away from the air inlet end.

3. The duct assembly as described in claim 2, characterized in that, The connecting part is an elastic connecting part made of elastic material, so that the plate body part can move relative to the air duct toward and away from the central axis of the air duct.

4. The duct assembly as described in claim 2, characterized in that, A sealing element is provided between the connecting part and the main body of the plate.

5. The duct assembly as described in claim 1, characterized in that, When the inner plate is in the second position, the multiple inner plates are arranged at intervals in the circumferential direction and each inner plate abuts against the inner wall of the air duct to form the second airflow channel. The shape of the inner plate is adapted to the shape of the air duct.

6. The duct assembly as described in claim 1, characterized in that, When the inner plate is in the first position, the plurality of inner plates extend axially inside the air duct and each inner plate is attached to each other to form the first airflow channel, and the inner plate separates the first airflow channel from the space inside the air duct.

7. The duct assembly as described in claim 1, characterized in that, The inner plate is provided with a magnetic attraction structure. When the inner plate is in the first position, multiple inner plates are magnetically connected in sequence to form the first airflow channel; and / or, when the inner plate is in the second position, multiple inner plates are magnetically connected to the inner wall of the air duct to form the second airflow channel.

8. The duct assembly as described in claim 1, characterized in that, The inner panel has four sections.

9. The duct assembly as described in claim 1, characterized in that, The end of the inner plate furthest from the air inlet extends axially to the air outlet.

10. A hair dryer, characterized in that, include: Hair dryer body, wherein the hair dryer body is provided with a blower nozzle; The air duct assembly is the air duct assembly as described in any one of claims 1-9, wherein the air inlet end of the air duct of the air duct assembly is sleeved at the air outlet.

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