A type of hair dryer

Abstract

This application relates to the field of home appliance technology, specifically to a hair dryer. The hair dryer includes: a main body, a fan, a heating element, and a control board; the main body is provided with an air inlet and an air outlet, and a main air duct and a heat dissipation air duct are disposed within the main body, the main air duct and the heat dissipation air duct being respectively connected to the air inlet and the air outlet; the heating element is disposed in the main air duct; the control board is disposed in the heat dissipation air duct; the fan is used to drive external air through the air inlet into the main air duct and the heat dissipation air duct respectively; wherein a portion of the heat dissipation air duct surrounds the main air duct and the main body. This hair dryer can cool the control board during air blowing, and at the same time, it can prevent heat from the main air duct from being transferred to the outer casing, thereby reducing the requirements for the high-temperature resistance of the outer casing.

Description

Technical Field

[0001] This application relates to the field of home appliance technology, and more specifically, to a hair dryer. Background Technology

[0002] In existing hair dryers, the control board, fan, heating element (heating wire), etc. are all installed in a common chamber. Since the heating element generates a lot of heat, over time it is easy to damage the control board due to overheating, resulting in a shorter lifespan of the control board.

[0003] To address this, some hair dryers have two internal air ducts. For example, one is a main air duct inside the tube for blowing air outwards, and the other is a cooling air duct inside the handle that connects to the main air duct. The fan and control board are housed in the cooling air duct. When air enters through the main air duct, outside air simultaneously passes through the cooling air duct. This air carries away the heat from the fan and control board before flowing back into the main air duct and finally being blown out through it.

[0004] However, with the above structural design, the air in the heat dissipation duct may collide with the air in the main air duct when it flows into the main air duct, causing turbulence, which will result in increased noise and reduced blowing speed of the hair dryer. Utility Model Content

[0005] This application provides at least one hair dryer that can cool the fan and control board during blowing, and at the same time prevent the heat from the main air duct from being transferred to the outer casing, thereby reducing the requirements for the high temperature resistance of the outer casing.

[0006] This application provides a hair dryer, including: a main body, a fan, a heating element, and a control board; the main body is provided with an air inlet and an air outlet, and a main air duct and a heat dissipation air duct are provided in the main body, the main air duct and the heat dissipation air duct being respectively connected to the air inlet and the air outlet; the heating element is disposed in the main air duct; the control board is disposed in the heat dissipation air duct; the fan is used to drive external air through the air inlet into the main air duct and the heat dissipation air duct respectively; wherein, a portion of the heat dissipation air duct surrounds the main air duct and the main body.

[0007] In one optional embodiment, the main body includes an outer cylinder, an inner cylinder, and a retaining ring;

[0008] The outer cylinder has a rear cover and an air outlet at both axial ends, and an air inlet on the side of the outer cylinder. The heating component is located inside the inner cylinder and at the end of the outer cylinder near the air outlet. The control board is located inside the outer cylinder and at the end of the cylinder near the rear cover.

[0009] The inner cylinder is disposed inside the outer cylinder and located between the heating component and the outer cylinder;

[0010] The baffle ring is disposed inside the outer cylinder and located between the heating component and the control board. The baffle ring, the inner cylinder and the heating component form the main air duct, and the baffle ring, the rear cover, the inner cylinder and the outer cylinder form the heat dissipation air duct.

[0011] In one alternative embodiment, both the inner cylinder and the retaining ring are fixed to the inner wall of the outer cylinder.

[0012] In one alternative embodiment, the inner cylinder and the retaining ring are axially tightly fitted.

[0013] In one optional embodiment, the inner cylinder has a first mating surface at one end near the retaining ring, and the retaining ring has a second mating surface at one end near the inner cylinder. One of the first mating surface and the second mating surface has a slot, and the other has a protrusion.

[0014] In one alternative embodiment, the outer diameter of the inner cylinder is not greater than the outer diameter of the retaining ring.

[0015] In one alternative embodiment, the inner cylinder is a heat-insulating cylinder.

[0016] In one alternative embodiment, the retaining ring is provided with a mounting portion for mounting the control board.

[0017] In one alternative embodiment, the retaining ring is provided with a through hole for the pins of the control board to pass through to connect to the heating assembly.

[0018] In one optional embodiment, the main body further includes a handle, which is disposed on the side of the outer cylinder. The handle is provided with an air inlet duct that communicates with the air inlet, and the fan is disposed within the air inlet duct.

[0019] The above-mentioned technical solution of this application has the following beneficial technical effects:

[0020] In this embodiment of the hair dryer, during operation, the air entering the fan can be split at the air inlet. One airflow passes through the air inlet into the main air duct, is heated by the heating element, and is then blown out from the air outlet. The other airflow passes through the air inlet into the heat dissipation duct, carries away the heat from the control board, and is then blown out from the air outlet, thereby cooling the control board. Furthermore, since part of the heat dissipation duct surrounds the main air duct and the main body, the airflow in the heat dissipation duct, being at a lower temperature, provides insulation as it passes around the main air duct, preventing heat transfer from the main air duct to the outer shell of the main body. This reduces the requirements for the high-temperature resistance of the main body shell and helps reduce material costs.

[0021] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. These drawings are incorporated in and constitute a part of this specification. They illustrate embodiments conforming to this application and, together with the specification, serve to explain the technical solutions of this application. It should be understood that the following drawings only show some embodiments of this application and should not be considered as limiting the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This invention provides a schematic diagram of the structure of a hair dryer according to an embodiment of the present application.

[0024] Figure 2 It shows Figure 1 An exploded view of the provided hair dryer;

[0025] Figure 3 It shows Figure 1 The provided diagram illustrates the operation of the hair dryer;

[0026] In the picture:

[0027] 10. Main body; 11. Back cover; 12. Outer cylinder; 13. Inner cylinder; 14. Retaining ring; 15. Handle; 20. Fan; 30. Heating component; 40. Control board; 100. Air inlet; 200. Air outlet; 300. Main air duct; 400. Heat dissipation air duct; 500. Air inlet air duct. Detailed Implementation

[0028] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0029] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0030] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] refer to Figures 1 to 3 , Figure 1 This invention provides a schematic diagram of the structure of a hair dryer according to an embodiment of the present application. Figure 2 It shows Figure 1 An exploded view of the provided hair dryer; Figure 3 It shows Figure 1 A schematic diagram of the operation of the provided hair dryer. The above figures are only for illustrating the innovation of this application and do not show all the components of the hair dryer.

[0034] This application provides at least one hair dryer that can cool the control board 40 while blowing air, and at the same time, can prevent the heat of the main air duct 300 from being transferred to the outer casing, thereby reducing the requirements for the high temperature resistance of the outer casing.

[0035] Specifically, the hair dryer includes: a main body 10, a fan 20, a heating element 30, and a control board 40. The main body 10 is provided with an air inlet 100 and an air outlet 200. A main air duct 300 and a heat dissipation air duct 400 are provided within the main body 10, and the main air duct 300 and the heat dissipation air duct 400 are respectively connected to the air inlet 100 and the air outlet 200. The heating element 30 is disposed in the main air duct 300. The control board 40 is disposed in the heat dissipation air duct 400, a portion of which surrounds the main air duct 300 and the main body 10. The fan 20 is used to drive outside air through the air inlet 100 into the main air duct 300 and the heat dissipation air duct 400.

[0036] When the hair dryer is running (fan 20 starts), the air entering the fan 20 can be split at the air inlet 100. One stream of air enters the main air duct 300 through the air inlet 100, and after being heated by the heating element 30, it is blown out from the air outlet 200. The other stream of air enters the heat dissipation air duct 400 through the air inlet 100, carrying away the heat from the control board 40 before being blown out from the air outlet 200, thus cooling the control board 40. In addition, since part of the heat dissipation air duct 400 surrounds the main air duct 300 and the main body 10, when the airflow in the heat dissipation air duct 400 passes around the main air duct 300, the lower airflow temperature can produce a heat insulation effect, preventing the heat from the main air duct 300 from being transferred to the outer shell of the main body 10. This reduces the requirements for the high-temperature resistance of the outer shell of the main body 10, which helps to reduce material costs.

[0037] It should be noted that when the airflow passes through the air inlet 100, only a small portion of the airflow can enter the heat dissipation duct 400, while the majority of the airflow enters the main air duct 300. This can minimize the impact on hair drying efficiency caused by airflow diversion for heat dissipation.

[0038] Optionally, in some embodiments, the main body 10 includes an outer cylinder 12, an inner cylinder 13, and a baffle ring 14. A rear cover 11 and an air outlet 200 are respectively provided at both axial ends of the outer cylinder 12. An air inlet 100 is provided on the side of the outer cylinder 12. A heating component 30 is disposed inside the inner cylinder 13 and located at the end of the outer cylinder 12 near the air outlet 200. A control plate 40 is disposed inside the outer cylinder 12 and located at the end of the cylinder near the rear cover 11. The inner cylinder 13 is disposed inside the outer cylinder 12 and located between the heating component 30 and the outer cylinder 12. The baffle ring 14 is disposed inside the outer cylinder 12 and located between the heating component 30 and the control plate 40. A main air duct 300 is formed between the baffle ring 14, the inner cylinder 13, and the heating component 30. A heat dissipation air duct 400 is formed between the baffle ring 14, the rear cover 11, the inner cylinder 13, and the outer cylinder 12. Specifically, the inner cylinder 13 and the baffle ring 14 form a main air duct 300. There is a gap between the outer cylinder 12 and the inner cylinder 13 and the baffle ring 14. This gap, together with the cavity between the baffle ring 14 and the rear cover 11, forms a heat dissipation air duct 400. At the same time, the baffle ring 14 separates the air inlet 100, so that when the outside air passes through the air inlet 100, it can be diverted into the main air duct 300 and the heat dissipation air duct 400 respectively.

[0039] Optionally, in some embodiments, both the inner cylinder 13 and the retaining ring 14 are fixed to the inner wall of the outer cylinder 12. For example, the outer walls of both the inner cylinder 13 and the retaining ring 14 are provided with snap-fit ​​members, and the inner cylinder 13 and the retaining ring 14 are respectively snapped to the inner wall of the outer cylinder 12 through the snap-fit ​​members to achieve fixation. This can prevent the inner cylinder 13 and the retaining ring 14 from vibrating and generating noise under the action of airflow. Of course, the fixing method of the inner cylinder 13 and the retaining ring 14 can be selected according to the actual situation and is not limited to the methods discussed above.

[0040] Optionally, in some embodiments, the inner cylinder 13 and the retaining ring 14 are axially tightly fitted. That is, in the assembled state, the inner cylinder 13 and the retaining ring 14 are tightly fitted, which allows the main air duct 300 and the heat dissipation air duct 400 to be independent of each other, preventing air leakage between the main air duct 300 and the heat dissipation air duct 400 from affecting the heat insulation effect.

[0041] Optionally, in some embodiments, a first mating surface is provided at the end of the inner cylinder 13 near the retaining ring 14, and a second mating surface is provided at the end of the retaining ring 14 near the inner cylinder 13. One of the first and second mating surfaces has a slot, and the other has a protrusion. This embodiment shows a protrusion at the end of the inner cylinder 13 near the retaining ring 14, and a slot at the end of the retaining ring 14 near the inner cylinder 13. In the assembled state, the protrusion is inserted into the slot, achieving a seal between the inner cylinder 13 and the retaining ring 14, preventing air leakage at the mating surfaces. Of course, to improve the sealing effect, a sealing material, such as a sealing ring or sealant, can be provided between the inner cylinder 13 and the retaining ring 14, or the inner cylinder 13 and the retaining ring 14 can be an integral structure.

[0042] Optionally, in some embodiments, the outer diameter of the inner cylinder 13 is not greater than the outer diameter of the baffle ring 14. That is, the outer diameter of the inner cylinder 13 can be equal to or less than the outer diameter of the baffle ring 14. This arrangement ensures that the heat dissipation airflow is not obstructed by the inner cylinder 13 when passing through the junction of the inner cylinder 13 and the baffle ring 14, thereby preventing energy loss due to airflow obstruction.

[0043] Optionally, in some embodiments, the inner cylinder 13 is a heat-insulating cylinder. That is, the inner cylinder 13 can provide heat insulation, thereby further reducing the performance requirements of the outer shell of the main body 10. Alternatively, it can be said that the inner cylinder 13 in this embodiment can be obtained by improving the heat-insulating cylinder of a traditional hair dryer.

[0044] Optionally, in some embodiments, the retaining ring 14 is provided with a mounting portion for mounting the control board 40. That is, the control board 40 can be mounted on the retaining ring 14, thus eliminating the need for an additional bracket for mounting the control board 40. Alternatively, the retaining ring 14 in this embodiment can be modified from the PCB bracket of a conventional hair dryer.

[0045] Optionally, in some embodiments, a positioning post is provided on the side of the retaining ring 14 facing the rear cover 11, and the control plate 40 can be mounted on the positioning post by means of a pin. Of course, the construction of the retaining ring 14 and the installation method of the control plate 40 can be selected according to the actual situation, and are not limited to the methods discussed above.

[0046] Optionally, in some embodiments, the retaining ring 14 is provided with a through hole for the pins of the control board 40 to pass through to connect to the heating assembly 30.

[0047] Optionally, in some embodiments, the main body 10 further includes a handle 15, which is disposed on the side of the outer cylinder 12. The handle 15 has an air inlet duct 500 communicating with the air inlet 100, and the fan 20 is disposed within the air inlet duct 500. During use, after the fan 20 is started, outside air can enter the air inlet duct 500 through the holes on the surface of the handle 15, and then be diverted through the air inlet 100. It should be understood that the air inlet duct 500 in the handle 15 is a conventional design, and will not be specifically described in this embodiment.

[0048] One or more embodiments in this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this specification should be included within the protection scope of this application.

[0049] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A hair dryer, characterized in that, include: The system comprises a main body, a fan, a heating element, and a control board. The main body has an air inlet and an air outlet, and a main air duct and a heat dissipation air duct are provided within the main body. The main air duct and the heat dissipation air duct are respectively connected to the air inlet and the air outlet. The heating element is disposed in the main air duct. The control board is disposed in the heat dissipation air duct. The fan is used to drive external air through the air inlet into the main air duct and the heat dissipation air duct respectively. A portion of the heat dissipation air duct surrounds the main air duct and the main body.

2. The hair dryer according to claim 1, characterized in that, The main body includes an outer cylinder, an inner cylinder, and a retaining ring; The outer cylinder has a rear cover and an air outlet at its two axial ends, and an air inlet on its side. The heating component is located inside the inner cylinder and at the end of the outer cylinder near the air outlet. The control board is located inside the outer cylinder and at the end of the outer cylinder near the rear cover. The inner cylinder is disposed inside the outer cylinder and located between the heating component and the outer cylinder; The baffle ring is disposed inside the outer cylinder and located between the heating component and the control board. The baffle ring, the inner cylinder and the heating component form the main air duct, and the baffle ring, the rear cover, the inner cylinder and the outer cylinder form the heat dissipation air duct.

3. The hair dryer according to claim 2, characterized in that, Both the inner cylinder and the retaining ring are fixed to the inner wall of the outer cylinder.

4. The hair dryer according to claim 2, characterized in that, The inner cylinder and the retaining ring are axially tightly fitted.

5. The hair dryer according to claim 4, characterized in that, The inner cylinder has a first mating surface at one end near the retaining ring, and the retaining ring has a second mating surface at one end near the inner cylinder. One of the first mating surface and the second mating surface has a slot, and the other has a protrusion.

6. The hair dryer according to claim 2, characterized in that, The outer diameter of the inner cylinder is not greater than the outer diameter of the retaining ring.

7. The hair dryer according to claim 2, characterized in that, The inner cylinder is a heat-insulating cylinder.

8. The hair dryer according to claim 2, characterized in that, The retaining ring is provided with a mounting part, which is used to mount the control board.

9. The hair dryer according to claim 2, characterized in that, The retaining ring is provided with a through hole for the pins of the control board to pass through in order to connect to the heating assembly.

10. The hair dryer according to claim 2, characterized in that, The main body also includes a handle, which is disposed on the side of the outer cylinder. The handle is provided with an air inlet duct that communicates with the air inlet, and the fan is disposed in the air inlet duct.

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