Air duct components and blowers

Abstract

The present invention discloses an air duct assembly and a hair dryer, wherein the air duct assembly comprises: a shell, a diffuser. The shell comprises: an outer shell, an inner ring and a plurality of vertical blades. The inner ring is arranged inside the outer shell, and is used to arrange the rotor assembly of the motor, and an annular channel is provided between the inner ring and the outer shell. The plurality of vertical blades are respectively connected to the outer shell and the inner ring. The diffuser is fixedly assembled in the outer shell, and comprises: a main body, and curved blades having the same number as the vertical blades. The curved blades are arranged on the main body, and the vertical blades on the shell correspond to the curved blades on the diffuser one by one, and are connected to each other, and the connected vertical blades and curved blades divide the annular channel into a plurality of air ducts for ventilation. Gas separation and turbulence are not easily formed inside the air duct of the air duct assembly, the motor efficiency is high, and it is relatively easy to process, and the manufacturing cost is low.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of hair dryers, and in particular to an air duct assembly and a hair dryer. Background Art

[0002] A hair dryer is an electrical appliance mainly used for hair drying and shaping. It is generally composed of a set of heating wires and a small fan with a high speed. When powered on, the heating wires will generate heat, and the wind blown out by the fan will become hot air after passing through the heating wires. If only the small fan rotates and the heating wire is not hot, then the wind blown out is cold air. The rotation of the small fan is driven by a motor.

[0003] The inventors found that the air duct of the motor used in the existing hair dryers is prone to gas separation and turbulence, which greatly affects the efficiency. Therefore, in order to solve this problem, the air duct of some hair dryer motors is formed by twisted blades with a more complex structure, but these twisted blades are not easy to process and the processing cost is high. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide an air duct assembly, so that gas separation and turbulence are not easily formed inside the air duct, thereby improving the efficiency of the motor, and the air duct assembly is relatively easy to process and has a low cost.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides an air duct assembly, including: a housing, a diffuser;

[0006] The housing specifically comprises: an outer shell, an inner ring and N vertical blades, wherein N is a natural number greater than or equal to 3; the inner ring is arranged inside the outer shell, an annular channel is provided between the inner ring and the outer shell, and the inner ring is used to arrange a rotor assembly of the motor; the N vertical blades are respectively connected to the outer shell and the inner ring;

[0007] The diffuser is fixedly assembled in the outer shell, and specifically comprises: a main body and N curved blades; the main body has a channel through which a rotor assembly of a power supply machine passes; the N curved blades are annularly arranged on the main body, and each vertical blade on the shell corresponds to each curved blade on the diffuser one by one and is connected to each other, and each connected vertical blade and curved blade divides the annular channel into N air ducts for ventilation.

[0008] An embodiment of the present invention further provides a hair dryer, comprising the air duct assembly as described above.

[0009] Compared with the prior art, the shell of the air duct assembly of the embodiment of the present invention is composed of an outer shell, an inner ring and a plurality of vertical blades. The inner ring is arranged inside the outer shell for arranging the rotor assembly of the motor, and an annular channel is provided between the inner ring and the outer shell, and each vertical blade is connected to the outer shell and the inner ring, respectively. In addition, a diffuser is added to the outer shell of the shell, and the diffuser is composed of a main body and curved blades arranged on the main body with the same number as the vertical blades. Each vertical blade on the shell corresponds to each curved blade on the diffuser one by one and is connected to each other, and each connected vertical blade and curved blade divides the annular channel into a plurality of air ducts for ventilation. This structure disassembles the original shell with a complex blade structure that is difficult to manufacture into two parts that are easy to process, so that the manufacturing cost can be controlled. In addition, since the two parts have vertical blades and curved blades, respectively, after the combination, it is not easy to form gas separation and turbulence inside the air duct, thereby improving the efficiency of the motor.

[0010] In addition, the main body of the diffuser is fixedly connected to the inner ring portion of the shell, so that the air duct of the shell can extend to the diffuser.

[0011] In addition, the inner ring portion specifically includes an inner ring body and a body extension section; the inner ring body and the body extension section are connected to each other; the main body of the diffuser is provided with a notch, the shape and size of the notch match the extension section, the extension section is embedded in the notch, and is bonded to the notch by an adhesive, so that the shell and the diffuser form a whole, ensuring the reliability of the connection.

[0012] In addition, a protrusion is provided on the inner ring body along the axial direction of the rotor assembly of the motor, and a recess is provided on the main body of the diffuser along the axial direction of the rotor assembly of the motor. The protrusion and the recess fit together during assembly, which facilitates the assembly of the housing and the diffuser.

[0013] In addition, the N vertical blades are all of the same size and shape and are evenly arranged in the annular channel, so that the efficiency of gas flow in the air duct is higher.

[0014] In addition, the N curved blades have the same size and shape and are evenly arranged on the main body, so that the efficiency of gas flow in the air duct is higher.

[0015] In addition, there is a gap of 0.1 mm between the N curved blades on the diffuser and the outer shell of the shell, so that the diffuser can be assembled into the shell, and the blades make the flow of gas in the air duct more efficient.

[0016] In addition, N is 9, which makes the flow of gas in the air duct more efficient.

[0017] In addition, each vertical blade and each curved blade form a whole with a smooth surface after being connected, so that gas separation and turbulence are not easily formed inside the air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0019] Figure 1 is an exploded view of the housing and the diffuser in the first embodiment of the present invention;

[0020] Figure 2 is a cross-sectional view of the housing and the diffuser after assembly in the first embodiment of the present invention;

[0021] Figure 3 It is a cross-sectional view of the assembled casing and diffuser in the second embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can be implemented.

[0023] A first embodiment of the present invention relates to an air duct assembly, such as Figure 1 As shown, it includes: a shell 1 and a diffuser 2. The shell 1 is made of metal, and specifically includes: an outer shell 3, an inner ring 4 and a plurality of vertical blades 5. The inner ring 4 is arranged inside the outer shell 3, and is used to set and install the rotor assembly of the motor, and there is an annular channel between the inner ring 4 and the outer shell 3, and a plurality of vertical blades 5 are respectively connected to the outer shell 3 and the inner ring 4. The diffuser 2 is fixedly assembled in the outer shell 3, which is also made of metal, and specifically includes: a main body 6 and a plurality of curved blades 7. The main body 6 has a channel through which the rotor assembly of the power supply machine passes, and a plurality of curved blades 7 are annularly arranged on the main body 6. Each vertical blade 5 on the shell 1 corresponds to each curved blade 7 on the diffuser 2 one by one, and is connected to each other. Each connected vertical blade 5 and curved blade 7 divides the annular channel into air ducts for ventilation with the same number as the vertical blades 5.

[0024] It should be noted that, in this embodiment, Figure 2As shown, the inner ring portion 4 specifically includes an inner ring body 8 and a body extension section 9. The inner ring body 8 and the body extension section 9 are connected to each other, and the main body 6 of the diffuser 2 is provided with a notch 10, the shape and size of the notch 10 match the extension section, the extension section is embedded in the notch 10, and is bonded to the notch 10 by an adhesive, so that the shell 1 and the diffuser 2 form a whole, ensuring the reliability of the connection. After bonding, the main body 6 of the diffuser 2 is fixedly connected to the inner ring portion 4 of the shell 1, so that the air duct of the shell 1 can extend to the diffuser 2. In addition, there is a gap of 0.1 mm between the multiple curved blades 7 on the diffuser 2 and the outer shell 3 of the shell 1, so that the diffuser 2 can be assembled into the shell 1, and the blades make the flow of gas in the air duct have a higher efficiency.

[0025] It is worth mentioning that Figure 1 As shown, the number of vertical blades and curved blades in this embodiment is 9, and the setting of this number of blades can make the flow of gas in the air duct have a higher efficiency. The vertical blades 5 of the shell 1 are the same in size and shape, and are evenly arranged in the annular channel. Similarly, the curved blades 7 of the diffuser 2 are the same in size and shape, and are evenly arranged on the main body 6. The blades arranged in this way can make the flow of gas in the air duct have a higher efficiency. In addition, each vertical blade 5 and each curved blade 7 form a smooth surface as a whole after connection, so that gas separation and turbulence are not easily formed inside the air duct. Of course, the number of blades can also be set to 6, 7, 8, 10, etc., and these numbers of blades can also make the flow of gas in the air duct have a high efficiency. The form and size of each vertical blade and each curved blade can also be changed according to specific usage requirements.

[0026] It is not difficult to find out from the above description that the shell 1 of the air duct assembly is composed of an outer shell 3, an inner ring 4 and a plurality of vertical blades 5. Among them, the inner ring 4 is arranged inside the outer shell 3, and there is an annular channel between the inner ring 4 and the outer shell 3, and each vertical blade 5 is connected to the outer shell 3 and the inner ring 4 respectively. In addition, a diffuser 2 is added to the outer shell 3 of the shell 1, and the diffuser 2 is composed of a main body 6 and curved blades 7 arranged on the main body 6 with the same number as the vertical blades 5. Among them, each vertical blade 5 on the shell 1 corresponds to each curved blade 7 on the diffuser 2 one by one, and is connected to each other, and each connected vertical blade 5 and curved blade 7 divides the annular channel into a plurality of air ducts for ventilation. This structure disassembles the original shell with complex blade structure that is difficult to manufacture into two easily processed parts, namely the shell 1 and the diffuser 2. The two parts simplify the original complex blade form, that is, vertical blades 5 are provided on the shell 1 and curved blades 7 are provided on the diffuser 2. In this way, the two parts can be processed relatively simply by means of CNC machine tools, molds, etc., so that the production cost can be controlled. After combination, it can prevent gas separation and turbulence from forming inside the air duct, thereby ensuring the smoothness and efficiency of the air duct and improving the efficiency of the motor.

[0027] The second embodiment of the present invention relates to an air duct assembly. The second embodiment further improves the air duct assembly of the first embodiment. The main improvement is that: in the second embodiment, Figure 3 As shown, a protrusion 11 is provided on the inner ring body 8 along the axial direction of the rotor assembly of the motor, and a recess 12 is provided on the main body 6 of the diffuser 2 along the axial direction of the rotor assembly of the motor. The protrusion 11 and the recess 12 fit together during assembly, which facilitates the assembly of the housing 1 and the diffuser 2.

[0028] Specifically, since the housing 1 and the diffuser 2 each have a plurality of blades, and since the vertical blades 5 on the housing 1 and the curved blades 7 on the diffuser 2 must correspond one to one and be connected to each other, it is not very easy to align them during assembly. Therefore, a protrusion 11 can be provided on the inner ring body 8 of the housing 1 along the axial direction of the rotor assembly of the motor, and a recess 12 can be provided on the main body 6 of the diffuser 2 at a corresponding position along the axial direction of the rotor assembly of the motor. During assembly, the protrusion 11 and the recess 12 fit together, thereby simplifying the difficulty of assembly.

[0029] Gas separation and turbulence are not easily formed inside the air duct of this air duct assembly, and the motor efficiency is higher. In addition, compared with the air duct assembly in the first embodiment, this air duct assembly is easier to process and manufacture, and has a lower manufacturing cost.

[0030] The third embodiment of the present invention relates to a hair dryer, which includes the air duct assembly as described in the second embodiment. Since the air duct of the air duct assembly is not easy to form gas separation and turbulence, the motor efficiency is high, and it is easy to process and manufacture, and the manufacturing cost of the air duct assembly is low. Therefore, the hair dryer with the air duct assembly has good performance and low manufacturing cost.

[0031] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An air duct assembly, characterized in that: include: Shell, diffuser; the shell is made of metal; The housing specifically comprises: an outer shell, an inner ring and N vertical blades, wherein N is a natural number greater than or equal to 3; the inner ring is arranged inside the outer shell, an annular channel is provided between the inner ring and the outer shell, and the inner ring is used to arrange a rotor assembly of the motor; the N vertical blades are respectively connected to the outer shell and the inner ring; The diffuser is fixedly assembled in the outer shell, and specifically comprises: a main body and N curved blades; the main body has a channel through which a rotor assembly of a power supply machine passes; the N curved blades are annularly arranged on the main body, and each vertical blade on the shell corresponds to each curved blade on the diffuser one by one and is connected to each other, and each connected vertical blade and curved blade divides the annular channel into N air ducts for ventilation.

2. The air duct assembly according to claim 1, characterized in that: The main body of the diffuser is fixedly connected to the inner ring portion of the shell.

3. The air duct assembly according to claim 2, characterized in that: The inner ring portion specifically includes an inner ring body and a body extension section; the inner ring body and the body extension section are connected to each other; the main body of the diffuser is provided with a notch, the shape and size of the notch match the extension section, the extension section is embedded in the notch, and is bonded to the notch by an adhesive.

4. The air duct assembly according to claim 3, characterized in that: The inner ring body is provided with a protrusion along the axial direction of the rotor assembly of the motor, and the main body of the diffuser is provided with a recess along the axial direction of the rotor assembly of the motor, and the protrusion and the recess fit each other during assembly.

5. The air duct assembly according to claim 1, characterized in that: The N vertical blades are all of the same size and shape and are evenly arranged in the annular channel.

6. The air duct assembly according to claim 1, characterized in that: The N curved blades have the same size and shape and are evenly arranged on the main body.

7. The air duct assembly according to claim 1, characterized in that: There is a gap of 0.1 mm between the N curved blades on the diffuser and the outer shell of the casing.

8. The air duct assembly according to claim 1, characterized in that: The N is 9.

9. The air duct assembly according to claim 1, characterized in that: The vertical blades and the curved blades form a whole with a smooth surface after being connected.

10. A hair dryer, characterized in that: The invention comprises an air duct assembly as claimed in any one of claims 1 to 9.

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