Hair dryer

Abstract

The invention provides a hair drier, and relates to the technical field of household appliances. A blower includes a flow channel housing, a motor, and an impeller. The runner shell comprises a shell body, a motor base and a plurality of flow deflectors. The shell is provided with a cavity, an air inlet and an air outlet, the motor base is arranged in the cavity, and a flow channel is formed between the outer periphery of the motor base and the inner wall of the shell. All the flow deflectors are arranged in the flow channel at intervals in the circumferential direction of the motor base, one side of each flow deflector is connected with the motor base, the other side of each flow deflector is connected with the shell, and a fluid channel is formed in the interval between any two adjacent flow deflectors. The motor is installed on the motor base, and the impeller is installed on an output shaft of the motor and located at one end of the motor base. The ends, close to the impeller, of the flow deflectors are bent corresponding to the rotating direction of the impeller. According to the blower, the problem of large on-way loss of airflow can be solved, so that the hydrodynamic performance of the blower is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a hair dryer. Background Art

[0002] The flow channel shell of the hair dryer is a structural component that limits the path of the airflow, ensures that the airflow can flow along the predetermined path under the action of the impeller, avoids the diffusion and loss of the airflow, and is also the mounting structure of the various components of the hair dryer.

[0003] In the prior art, the motor base of the hair dryer is generally arranged in the flow channel shell through support sheets and connected to the flow channel shell. Under the action of the impeller, the airflow flows through the gaps of these support sheets. Although these support sheets can support and fix the motor base, the structural design of these support sheets is unreasonable. When the airflow flows through the support sheets, there will be obvious impact loss, resulting in increased loss along the way of the airflow, affecting the fluid dynamics performance of the hair dryer. Summary of the invention

[0004] The purpose of the present invention includes providing a hair dryer which can improve the problem of large air flow loss along the way, thereby improving the fluid dynamic performance of the hair dryer.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] The present application provides a hair dryer, comprising a flow channel housing, a motor and an impeller;

[0007] The flow channel housing comprises a housing, a motor seat and a plurality of guide vanes;

[0008] The shell is provided with a cavity and an air inlet and an air outlet communicated with the cavity;

[0009] The motor seat is arranged in the cavity, and a flow channel is formed between the outer periphery of the motor seat and the inner wall of the shell;

[0010] All the guide plates are arranged in the flow channel at intervals along the circumference of the motor seat, and one side of the guide plate is connected to the motor seat, and the other side is connected to the housing, and the interval between any two adjacent guide plates forms a fluid channel;

[0011] The motor is mounted on the motor base, the impeller is mounted on the output shaft of the motor, and the impeller is located at one end of the motor base;

[0012] One end of the guide vane close to the impeller is bent corresponding to the rotation direction of the impeller;

[0013] The operation of the motor can drive the impeller to rotate so as to draw external air into the flow channel from the air inlet and send the air out from the air outlet through the fluid channel.

[0014] In an optional embodiment, the impeller is located at the front end of the motor base and corresponds to the air outlet, and the bending direction of one end of the guide vane close to the impeller is the same as the rotation direction of the impeller.

[0015] In an optional embodiment, the end of the guide vane close to the impeller is bent in a clockwise direction;

[0016] The impeller rotates clockwise to make the air flow flow from the rear end of the impeller to the front end of the impeller and then be sent out from the air outlet.

[0017] In an optional embodiment, the surfaces on both sides of the guide vane are spline surfaces, and the end of the guide vane close to the impeller is the leading edge of the guide vane;

[0018] The inlet angle of the leading edge ranges from 28° to 32°.

[0019] In an optional embodiment, the end of the guide vane away from the impeller is the trailing edge of the guide vane;

[0020] The value of the inlet angle of the trailing edge is 0°.

[0021] In an optional embodiment, the housing further includes a front housing, a middle housing and a rear housing;

[0022] The front shell is installed at the front end of the middle shell, and the rear shell is installed at the rear end of the middle shell;

[0023] The air inlet is arranged at the rear shell, and the air outlet is arranged at the front end of the front shell;

[0024] The front shell, the middle shell and the rear shell are enclosed to form the cavity;

[0025] The motor seat is arranged in the middle shell, a flow channel is formed between the outer periphery of the motor seat and the inner wall of the middle shell, and one side of the guide plate is connected to the middle shell;

[0026] The front shell cover is arranged on the outer periphery of the impeller.

[0027] In an optional embodiment, the middle shell, the motor seat and the guide plate are integrally formed.

[0028] In an optional embodiment, the hair dryer further comprises a support base, a heat insulating sheet and a heating wire;

[0029] The support base is arranged in the cavity and is located between the motor base and the rear shell, one end of the support base is fixed to the motor base, and the other end is fixed to the rear shell;

[0030] A plurality of the heat insulation sheets are arranged at intervals on the support base along the circumference of the support base, and the flow channel is formed between the outer side of the support base and the outer side of the motor base and the inner wall of the middle shell;

[0031] The heating wire is wound around the outer periphery of the thermal insulation sheet;

[0032] The air inlet is arranged in a region of the rear shell corresponding to the flow channel.

[0033] In an optional embodiment, the number of the heat insulation sheets corresponds to the number of the guide sheets, and the heat insulation sheets are arranged in a one-to-one correspondence with the rear ends of the guide sheets.

[0034] Optionally, one end of the heat insulation sheet close to the guide sheet abuts against the rear end of the guide sheet.

[0035] The beneficial effects of the hair dryer provided by the embodiment of the present invention include:

[0036] After the airflow passes through the impeller, it accelerates and not only has an axial velocity, but also a large circumferential velocity. The present application arranges all the guide vanes in the flow channel along the circumferential intervals of the motor seat, and connects one side of the guide vane to the motor seat and the other side to the shell, so that the interval between any two adjacent guide vanes forms a fluid channel, and the end of the guide vane close to the impeller is bent and arranged corresponding to the rotation direction of the impeller, so that the flow direction of the airflow and the direction of the guide plate are basically the same, which can reduce the impact loss generated when the airflow passes through the inner cavity. The guide plate can also suppress the development of the flow separation vortex formed in the flow channel, thereby improving the fluid performance of the hair dryer. At the same time, the guide plate also supports and connects the motor seat, so that the motor seat is stably arranged in the flow channel shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A schematic diagram of the structure of a hair dryer provided by an embodiment of the present invention;

[0039] Figure 2 A schematic cross-sectional view of a hair dryer provided by an embodiment of the present invention;

[0040] Figure 3 A schematic diagram of the exploded structure of a hair dryer provided in an embodiment of the present invention;

[0041] Figure 4A schematic structural diagram of a middle shell of a hair dryer provided in an embodiment of the present invention;

[0042] Figure 5 A schematic cross-sectional view of a partial structure of a hair dryer provided in an embodiment of the present invention;

[0043] Figure 6 It is a fluid simulation analysis diagram when the guide plate of the existing hair dryer is a straight plate;

[0044] Figure 7 This is a fluid simulation analysis diagram of a hair dryer provided in an embodiment of the present invention when the guide vane is set to be bent.

[0045] Icons: 100 - hair dryer; 110 - flow channel shell; 111 - shell; 112 - motor seat; 113 - guide vane; 114 - cavity; 115 - air inlet; 116 - air outlet; 117 - flow channel; 119 - fluid channel; 121 - leading edge; 122 - trailing edge; 123 - front shell; 124 - middle shell; 125 - rear shell; 126 - fitting ring groove; 127 - mounting groove; 128 - limit card groove; 130 - motor; 150 - impeller; 151 - hub; 152 - blades; 170 - support seat; 171 - plug-in slot; 190 - thermal insulation sheet. DETAILED DESCRIPTION

[0046] The motor base of the hair dryer is generally arranged in the flow channel shell through support sheets and connected to the flow channel shell. Under the action of the impeller, the airflow flows through the gaps of these support sheets. Although these support sheets can support and fix the motor base, the structural design of these support sheets is unreasonable. When the airflow flows through the support sheets, there will be obvious impact loss, resulting in increased loss along the way of the airflow, affecting the fluid dynamics performance of the hair dryer.

[0047] In view of the above problems, the present invention provides a hair dryer which can improve the problem of large air flow losses along the way, thereby improving the fluid dynamic performance of the hair dryer.

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0051] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0052] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0053] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0054] The overall structure, working principle and technical effects of the hair dryer provided by the present invention are described in detail below through embodiments and in conjunction with the accompanying drawings.

[0055] Please refer to Figures 1 to 5 In this embodiment, the hair dryer 100 includes a flow channel housing 110, a motor 130 and an impeller 150. The flow channel housing 110 includes a housing 111, a motor seat 112 and a plurality of guide vanes 113. The housing 111 is provided with a cavity 114 and an air inlet 115 and an air outlet 116 connected to the cavity 114. The motor seat 112 is arranged in the cavity 114, and a flow channel 117 is formed between the outer periphery of the motor seat 112 and the inner wall of the housing 111. All the guide vanes 113 are arranged in the flow channel 117 along the circumferential direction of the motor seat 112, and one side of the guide vane 113 is connected to the motor seat 112, and the other side is connected to the housing 111. The interval between any two adjacent guide vanes 113 forms a fluid channel 119. The motor 130 is mounted on the motor seat 112, and the impeller 150 is mounted on the output shaft of the motor 130, and the impeller 150 is located at one end of the motor seat 112. The guide vane 113 is bent at one end close to the impeller 150 corresponding to the rotation direction of the impeller 150. The motor 130 can drive the impeller 150 to rotate so as to draw external air from the air inlet 115 into the flow channel 117 and send it out from the air outlet 116 through the fluid channel 119.

[0056] The airflow accelerated by the impeller 150 has not only an axial velocity but also a relatively large circumferential velocity, so that the airflow flows in a spiral manner in the area near the impeller 150. However, the existing support plate for supporting the motor base 112 is generally arranged flat, and the spiral airflow will have a relatively large impact with the support plate, thereby increasing the loss of the airflow along the way and affecting the fluid dynamics performance of the hair dryer 100.

[0057] In this embodiment, all the guide vanes 113 are arranged in the flow channel 117 along the circumferential intervals of the motor base 112, and one side of the guide vane 113 is connected to the motor base 112, and the other side is connected to the housing 111, so that the interval between any two adjacent guide vanes 113 forms a fluid channel 119, and the end of the guide vane 113 close to the impeller 150 is bent and arranged corresponding to the rotation direction of the impeller 150, so that the flow direction of the airflow and the direction of the guide plate are basically the same, which can reduce the impact loss generated when the airflow passes through the inner cavity, and the guide plate can also suppress the development of the flow separation vortex formed in the flow channel 117, thereby improving the fluid performance of the hair dryer 100. At the same time, the guide plate also supports and connects the motor base 112, so that the motor base 112 is stably arranged in the flow channel housing 110.

[0058] Please refer to Figure 6 and 7 , Figure 6 The figure is a fluid simulation analysis diagram when the guide plate 113 of the hair dryer 100 is a straight plate. It can be seen from the figure that the impact between the airflow and the guide is more serious, and the vortex is more serious at the outlet. Figure 7 This is a fluid simulation analysis diagram when the guide plate 113 of the hair dryer 100 provided in this embodiment is bent. Figure 7 It can be seen that the impact of the airflow on the guide plate is significantly weakened, and the vortex is also significantly weakened, thereby reducing the resistance of the airflow along the way.

[0059] Please refer to Figures 1 to 5 In this embodiment, the impeller 150 is located at the front end of the motor base 112 and corresponds to the air outlet 116 , and the bending direction of one end of the guide vane 113 close to the impeller 150 is the same as the rotation direction of the impeller 150 .

[0060] In this embodiment, the impeller 150 is arranged at the front end of the motor base 112, and the leading edge 121 of the guide vane 113 is bent toward the rotation direction of the impeller 150. The airflow flowing out through the airflow channel can flow along the rotation direction of the impeller 150, and even flow tangentially to the blades 152 of the impeller 150, thereby improving the impact loss of the airflow and the impeller 150.

[0061] In this embodiment, the end of the guide vane 113 close to the impeller 150 is bent in the clockwise direction. The clockwise rotation of the impeller 150 can make the air flow flow from the rear end of the impeller 150 to the front end of the impeller 150 and then be sent out from the air outlet 116.

[0062] In this embodiment, the impeller 150 rotates clockwise and the guide vane 113 bends in the clockwise direction, which can better improve the loss along the airflow.

[0063] Of course, in some other embodiments of the present application, the impeller 150 may also be set at the rear end of the motor base 112. When the impeller 150 is set at the rear end of the motor base 112, the rear end of the guide vane 113 is bent toward the rotation direction of the impeller 150.

[0064] Please refer to Figures 1 to 5 Furthermore, the surfaces on both sides of the guide vane 113 are spline surfaces, and one end of the guide vane 113 close to the impeller 150 is the leading edge 121 of the guide vane 113. The inlet angle of the leading edge 121 ranges from 28° to 32°.

[0065] In this embodiment, the value range of the inlet angle of the leading edge 121 of the guide vane 113 is set to 28° to 32°, which can further improve the problem of edge loss.

[0066] Furthermore, the end of the guide vane 113 away from the impeller 150 is the trailing edge 122 of the guide vane 113, and the inlet angle of the trailing edge 122 is set to 0°. Setting the inlet angle of the trailing edge 122 to 0° can further improve the problem of airflow loss.

[0067] Furthermore, the leading edge 121 line of the leading edge 121 of the guide vane 113 is arranged along the radial direction of the impeller 150 , and the trailing edge 122 line of the trailing edge 122 of the guide vane 113 is also in the radial direction of the impeller 150 .

[0068] Please refer to Figures 1 to 5 Further, the shell 111 also includes a front shell 123, a middle shell 124 and a rear shell 125. The front shell 123 is installed at the front end of the middle shell 124, and the rear shell 125 is installed at the rear end of the middle shell 124. The air inlet 115 is arranged at the rear shell 125, and the air outlet 116 is arranged at the front end of the front shell 123. The front shell 123, the middle shell 124 and the rear shell 125 are surrounded to form a cavity 114. The motor base 112 is arranged in the middle shell 124, and a flow channel 117 is formed between the outer periphery of the motor base 112 and the inner wall of the middle shell 124, and one side of the guide plate 113 is connected to the middle shell 124. The front shell 123 is covered on the outer periphery of the impeller 150.

[0069] In this embodiment, the guide shell is configured as the above-mentioned parts for easy molding and assembly.

[0070] Please refer to Figures 1 to 5 In this embodiment, the middle shell 124, the motor seat 112 and the guide plate 113 are integrally formed. The integral forming facilitates assembly.

[0071] Specifically, two ends of the middle shell 124 are respectively connected to the front shell 123 and the rear shell 125 by snap-fitting.

[0072] In this embodiment, the hair dryer 100 further includes a support base 170, a heat insulating sheet 190 and a heating wire (not shown). The support base 170 is disposed in the cavity 114 and is located between the motor base 112 and the rear shell 125. One end of the support base 170 is fixed to the motor base 112, and the other end is fixed to the rear shell 125. A plurality of heat insulating sheets 190 are arranged on the support base 170 at intervals along the circumference of the support base 170, and a flow channel 117 is formed between the outer side of the support base 170 and the outer side of the motor base 112 and the inner wall of the middle shell 124. The heating wire is wound around the outer periphery of the heat insulating sheet 190. The air inlet 115 is arranged in the area corresponding to the flow channel 117 of the rear shell 125.

[0073] In this embodiment, the support base 170 is arranged between the motor base 112 and the rear shell 125, so that the support base 170 can be fixed by connecting the two ends. The electric heating wire can heat the airflow passing through.

[0074] Please refer to Figures 1 to 5 Specifically, the rear end of the motor seat 112 is provided with an engaging annular groove 126, and the front end of the support seat 170 is embedded in the engaging groove and connected by a buckle. The rear end of the motor seat 112 is recessed with a mounting groove 127, and the motor 130 is installed in the mounting groove 127, and the output shaft of the motor 130 extends to the front end of the motor seat 112 through the mounting groove 127. The inner side of the rear shell 125 is provided with an annular limit groove 128, and the rear end of the support seat 170 is snap-connected in the limit groove 128. The support seat 170 is a hollow structure. The support member is enclosed on the outside of the motor 130.

[0075] In this embodiment, the two ends of the support base 170 are respectively mounted with the motor base 112 and the rear shell 125, so that the airflow is not affected by the connection between the two. The motor 130 is enclosed inside the support base 170 and the motor base 112 to avoid the influence of the motor 130 on the airflow.

[0076] Please refer to Figures 1 to 5 In this embodiment, the number of the heat insulating sheets 190 corresponds to the number of the guide sheets 113, and the heat insulating sheets 190 are arranged one-to-one at the rear ends of the guide sheets 113. This can avoid the influence of the heat insulating sheets 190 on the airflow, thereby further reducing the resistance along the airflow and improving the fluid dynamics performance of the hair dryer 100.

[0077] Specifically, one end of the heat insulation sheet 190 close to the guide sheet 113 abuts against the rear end of the guide sheet 113. This arrangement can improve the problem of large resistance along the airflow.

[0078] In this embodiment, the heat insulation sheet 190 is a mica sheet, and a sawtooth groove is arranged on the outside to fix the electric heat die.

[0079] Furthermore, the outer sides of the two ends of the heat insulation sheet 190 are provided with chamfers, and the middle part is provided with hollow holes. The provision of chamfers and hollow holes can further improve the problem of large resistance along the airflow.

[0080] Specifically, the number of the guide plates 113 and the number of the heat insulating plates 190 are both 10. Ten insertion slots 171 are arranged in the circumferential direction of the support frame. The heat insulating plates 190 are inserted into the insertion slots 171 in a one-to-one correspondence.

[0081] Please refer to Figures 1 to 5 In this embodiment, the impeller 150 includes a hub 151 and a plurality of blades 152. The plurality of blades 152 are evenly arranged on the front side of the hub 151 along the circumference of the hub 151. The shape of the blades 152 is a three-dimensional twisted shape.

[0082] In summary, all the guide vanes 113 are arranged in the flow channel 117 along the circumferential intervals of the motor base 112, and one side of the guide vane 113 is connected to the motor base 112, and the other side is connected to the shell 111, so that the interval between any two adjacent guide vanes 113 forms a fluid channel 119, and the end of the guide vane 113 close to the impeller 150 is bent corresponding to the rotation direction of the impeller 150, so that the flow direction of the airflow and the direction of the guide plate are basically the same, which can reduce the impact loss generated when the airflow passes through the inner cavity, and the guide plate can also suppress the development of the flow separation vortex formed in the flow channel 117, thereby improving the fluid performance of the hair dryer 100. At the same time, the guide plate also supports and connects the motor base 112, so that the motor base 112 is stably arranged in the flow channel shell 110.

[0083] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A hair dryer, characterized in that: It comprises a flow channel housing (110), a motor (130) and an impeller (150); The flow channel housing (110) comprises a housing (111), a motor seat (112) and a plurality of guide vanes (113); The housing (111) is provided with a cavity (114) and an air inlet (115) and an air outlet (116) communicated with the cavity (114); The motor seat (112) is arranged in the cavity (114), and a flow channel (117) is formed between the outer periphery of the motor seat (112) and the inner wall of the housing (111); All the guide plates (113) are arranged in the flow channel (117) at intervals along the circumference of the motor seat (112), and one side of the guide plate (113) is connected to the motor seat (112), and the other side is connected to the housing (111), and the interval between any two adjacent guide plates (113) forms a fluid channel (119); The motor (130) is mounted on the motor base (112), the impeller (150) is mounted on an output shaft of the motor (130), and the impeller (150) is located at one end of the motor base (112); One end of the guide vane (113) close to the impeller (150) is bent corresponding to the rotation direction of the impeller (150); The operation of the motor (130) can drive the impeller (150) to rotate so as to draw external air from the air inlet (115) into the flow channel (117) and send the air out from the air outlet (116) through the fluid channel (119).

2. The hair dryer according to claim 1, characterized in that: The impeller (150) is located at the front end of the motor base (112) and corresponds to the air outlet (116); the bending direction of one end of the guide plate (113) close to the impeller (150) is the same as the rotation direction of the impeller (150).

3. The hair dryer according to claim 2, characterized in that: One end of the guide vane (113) close to the impeller (150) is bent in a clockwise direction; The impeller (150) rotates clockwise to cause the airflow to flow from the rear end of the impeller (150) toward the front end of the impeller (150) and then be sent out from the air outlet (116).

4. The hair dryer according to claim 3, characterized in that: The surfaces on both sides of the guide vane (113) are spline curved surfaces, and one end of the guide vane (113) close to the impeller (150) is a leading edge (121) of the guide vane (113); The inlet angle of the leading edge (121) has a value range of 28° to 32°.

5. The hair dryer according to claim 4, characterized in that: An end of the guide vane (113) away from the impeller (150) is a trailing edge (122) of the guide vane (113). The value of the inlet angle of the trailing edge (122) is 0°.

6. The hair dryer according to any one of claims 1 to 4, characterized in that: The housing (111) further comprises a front housing (123), a middle housing (124) and a rear housing (125); The front shell (123) is installed at the front end of the middle shell (124), and the rear shell (125) is installed at the rear end of the middle shell (124); The air inlet (115) is arranged on the rear shell (125), and the air outlet (116) is arranged on the front end of the front shell (123); The front shell (123), the middle shell (124) and the rear shell (125) enclose and form the cavity (114); The motor seat (112) is arranged in the middle shell (124), a flow channel (117) is formed between the outer periphery of the motor seat (112) and the inner wall of the middle shell (124), and one side of the guide plate (113) is connected to the middle shell (124); The front shell (123) is arranged to cover the outer periphery of the impeller (150).

7. The hair dryer according to claim 6, characterized in that: The middle shell (124), the motor seat (112) and the guide plate (113) are integrally formed.

8. The hair dryer according to claim 6, characterized in that: The hair dryer also includes a support base (170), a heat insulating sheet (190) and a heating wire; The support seat (170) is disposed in the cavity (114) and is located between the motor seat (112) and the rear shell (125); one end of the support seat (170) is fixed to the motor seat (112), and the other end is fixed to the rear shell (125); A plurality of the heat insulating sheets (190) are arranged on the support seat (170) at intervals along the circumference of the support seat (170), and the flow channel (117) is formed between the outer side of the support seat (170) and the outer side of the motor seat (112) and the inner wall of the middle shell (124); The heating wire is wound around the outer periphery of the heat insulation sheet (190); The air inlet (115) is arranged in a region of the rear shell (125) corresponding to the flow channel (117).

9. The hair dryer according to claim 8, characterized in that: The number of the heat insulating sheets (190) corresponds to the number of the guide sheets (113), and the heat insulating sheets (190) are arranged at the rear ends of the guide sheets (113) in a one-to-one correspondence.

10. The hair dryer according to claim 9, characterized in that: One end of the heat insulation sheet (190) close to the guide sheet (113) abuts against the rear end of the guide sheet (113).

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