Blowing device

Abstract

The utility model belongs to the technical field of living appliances, and discloses a blowing device. The air blowing device comprises a main body mechanism, a handle mechanism and a control mechanism, a main air outlet is formed in the main body mechanism, a main body air channel communicated with the main air outlet is formed in the main body mechanism, the handle mechanism is connected with the main body mechanism, a main air inlet is formed in the handle mechanism, and a handle air channel communicated with the main air inlet and the main body air channel is formed in the handle mechanism. The control mechanism comprises a circuit board, the circuit board is arranged in the handle air channel, and main airflow flowing through the handle air channel passes through the circuit board. According to the air blowing device, the circuit board of the control mechanism is arranged in the handle air channel, the main airflow flowing through the handle air channel passes through the circuit board, heat generated by the circuit board can be taken away through the main airflow, the heat dissipation performance and the heat dissipation efficiency of the circuit board are improved, the aging efficiency of the circuit board is delayed, and the service life of the circuit board is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to life utensil technical field especially, relate to a blowing device. BACKGROUND

[0002] The hair dryer is the indispensable life utensil in people's daily life, and the high-speed hair dryer is popular because of its unique shape and good hair blowing effect. The high-speed hair dryer comprises a control panel for controlling the operation of its electric control components. The existing high-speed hair dryer has the problem of low heat dissipation efficiency of the control panel during use. The low heat dissipation efficiency of the control panel accelerates its aging and affects its service life.

[0003] Therefore, how to provide a hair dryer capable of improving the heat dissipation efficiency is a technical problem to be solved at present. SUMMARY

[0004] The utility model discloses a blowing device, the heat dissipation performance of the circuit board of the blowing device is good, and the aging efficiency is low, and the service life is long.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] A blowing device comprises a main body mechanism, a main air outlet is formed on the main body mechanism, a main body air duct is formed in the main body mechanism and communicates with the main air outlet, a handle mechanism is connected with the main body mechanism, a main air inlet is formed on the handle mechanism, a handle air duct is formed in the handle mechanism and communicates with the main air inlet and the main body air duct, and a control mechanism comprises a circuit board, the circuit board is arranged in the handle air duct, and the main airflow flowing through the handle air duct passes through the circuit board.

[0007] Preferably, the handle mechanism is provided with a partition piece, the partition piece is used for dividing the handle air duct into at least a first air duct cavity and a second air duct cavity, and the circuit board is arranged in the first air duct cavity; the blowing device further comprises a motor, and the motor is arranged in the second air duct cavity.

[0008] Preferably, the circuit board is provided with one, the control mechanism further comprises at least one control button, and the control button is arranged on the circuit board; or the control mechanism comprises at least two circuit boards which are separately arranged and spaced apart, and the control mechanism further comprises at least one control button, and at least one control button is arranged on the same circuit board or different circuit boards.

[0009] Preferably, the partition piece comprises a contraction part, and the contraction part is used for avoiding the convex part on the circuit board.

[0010] Preferably, the handle mechanism is in a tubular structure, and the cross-sectional shape of the handle mechanism is a runway circle, a circle, an ellipse, or a square with rounded corners.

[0011] Preferably, the handle mechanism comprises a handle main pipe and a handle air inlet cover connected to each other, the handle main pipe is connected to the main body mechanism, the dividing member and the circuit board are arranged in the handle main pipe, the handle air inlet cover is arranged at one end of the handle main pipe away from the main body mechanism, and the main air inlet is arranged on the handle air inlet cover.

[0012] Preferably, the hair dryer further comprises a motor, the motor is arranged in the handle mechanism, and the motor is located between the circuit board and the main body mechanism.

[0013] Preferably, the hair dryer further comprises a mounting box, the mounting box is arranged in the handle mechanism, the circuit board is arranged in the mounting box, and the main airflow flows through the inside of the mounting box.

[0014] Preferably, the mounting box comprises a support part and a containing part, the support part is located at the side close to the motor, and the circuit board is arranged in the containing part.

[0015] Preferably, the support part is in a tubular structure, the support part is sleeved outside the containing part, the top of the support part protrudes outside the top of the containing part, and a through air hole is arranged through the part opposite to the containing part of the support part; or the support part is in a tubular structure, the top of the containing part is connected to the bottom of the support part, and an air gap is formed between the top of the containing part and the bottom of the support part.

[0016] Preferably, the handle mechanism comprises a handle main pipe and a handle air inlet cover connected to each other, the handle main pipe is connected to the main body mechanism, the handle air inlet cover is arranged at one end of the handle main pipe away from the main body mechanism, and the main air inlet is arranged on the handle air inlet cover; the support part is located in the handle main pipe, and the containing part is at least partially arranged in the handle air inlet cover.

[0017] Preferably, the hair dryer further comprises a motor, the motor is arranged in the handle mechanism, and the circuit board is located between the motor and the main body mechanism.

[0018] Preferably, the main body mechanism is in a plug-in fit with the handle mechanism, the main body mechanism comprises a plug-in part inserted into the handle mechanism, and the circuit board is located in the plug-in part.

[0019] Preferably, a partition plate is arranged in the plug-in part, the partition plate is used to divide the plug-in part into at least an installation cavity and an air passing cavity, the circuit board is arranged in the installation cavity, and the air passing cavity is in communication with the main body air duct.

[0020] Preferably, the handle mechanism comprises a handle main pipe and a handle air inlet cover connected with each other, the handle main pipe is connected with the body mechanism, the handle air inlet cover is arranged at one end of the handle main pipe away from the body mechanism, the main air inlet is arranged on the handle air inlet cover, and the circuit board is arranged in the handle air inlet cover and / or the handle main pipe.

[0021] The utility model discloses beneficial effects:

[0022] The utility model provides a blowing device includes body mechanism, handle mechanism and control mechanism, and the main air outlet is formed on the body mechanism, and the main body air channel that communicates with the main air outlet is formed in the body mechanism, and the handle mechanism is connected with the body mechanism, and the main air inlet is formed on the handle mechanism, and the handle air channel that communicates the main air inlet and the main body air channel is formed in the handle mechanism, and the control mechanism includes the circuit board, and the circuit board is arranged in the handle air channel, and the main airflow that flows through the handle air channel passes through the circuit board. The blowing device sets up the circuit board of control mechanism in the handle air channel, and makes the main airflow that flows through the handle air channel pass through the circuit board, utilizes the heat that the main airflow can take away the heat generated by the circuit board, improves the heat dissipation performance and heat dissipation efficiency of circuit board, delays the aging efficiency of circuit board, prolongs the service life of circuit board. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the cross section view of the blowing device provided by the utility model embodiment one;

[0024] Figure 2 It is the explosion drawing of the blowing device provided by the utility model embodiment one;

[0025] Figure 3 It is Figure 1 The cross section view of direction A-A in;

[0026] Figure 4 It is the cross section view of the blowing device provided by the utility model embodiment two;

[0027] Figure 5 It is the explosion drawing of the blowing device provided by the utility model embodiment two;

[0028] Figure 6 It is the cross section view of the blowing device provided by the utility model embodiment three;

[0029] Figure 7 It is the explosion drawing of the blowing device provided by the utility model embodiment three;

[0030] Figure 8 It is the schematic drawing of the first installation box provided by the utility model embodiment three;

[0031] Figure 9is Figure 8 a sectional view of the structure shown in

[0032] Figure 10 is a schematic view of a second mounting box provided in the third embodiment of the present utility model;

[0033] Figure 11 is Figure 10 a sectional view of the structure shown in

[0034] Figure 12 is a schematic view of a third mounting box provided in the third embodiment of the present utility model;

[0035] Figure 13 is Figure 12 a sectional view of the structure shown in

[0036] Figure 14 is a sectional view of the blowing device provided in the fourth embodiment of the present utility model;

[0037] Figure 15 is an exploded view of the blowing device provided in the fourth embodiment of the present utility model;

[0038] Figure 16 is a schematic view of a first partition provided in the fourth embodiment of the present utility model;

[0039] Figure 17 is a schematic view of a second partition provided in the fourth embodiment of the present utility model.

[0040] in the figure:

[0041] 100, main body mechanism; 101, main air duct; 102, main air outlet; 103, secondary fluid passage; 110, shell structure; 120, inner shell structure; 130, annular end plate; 140, flow guide; 150, exhaust cover; 160, plug-in part;

[0042] 200, handle mechanism; 210, handle main pipe; 220, handle air inlet cover; 201, main air inlet; 202, handle air duct; 2021, first air duct cavity; 2022, second air duct cavity;

[0043] 300, control mechanism; 310, circuit board; 311, electronic board; 312, electronic component; 320, control button;

[0044] 400, dividing piece; 401, contraction part; 410, first dividing part; 420, second dividing part;

[0045] 500, motor; 600, heating body; 700, support pipe; 800, power cord;

[0046] 900, mounting box; 910, support part; 911, air passing hole; 920, containing part; 930, air passing gap; 1000, partition plate. DETAILED DESCRIPTION

[0047] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model and are not a limitation on the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all structures.

[0048] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0049] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0050] In the description of the embodiment, the terms "upper", "lower", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description and have no special meaning.

[0051] As Figures 1 to 17 As shown in the utility model provides a kind of hair dryer, the hair dryer can generate airflow, using the airflow can be blown dry hair and other operations. Of course, the hair dryer can be used to blow other objects in addition to being used to blow dry hair.

[0052] Specifically, the hair dryer comprises a main body mechanism 100, a handle mechanism 200 and a control mechanism 300. The main body mechanism 100 is provided with a main air outlet 102, and the main body mechanism 100 is provided with a main body air duct 101 communicating with the main air outlet 102. The handle mechanism 200 is connected with the main body mechanism 100, and the handle mechanism 200 is provided with a main air inlet 201, and the handle mechanism 200 is provided with a handle air duct 202 communicating the main air inlet 201 and the main body air duct 101. The control mechanism 300 comprises a circuit board 310, which is arranged in the handle air duct 202, and the main airflow flowing through the handle air duct 202 passes through the circuit board 310.

[0053] The circuit board 310 is a main heat generating component of the hair dryer, and a large amount of heat is generated during the operation of the circuit board 310. The hair dryer sets the circuit board 310 of the control mechanism 300 in the handle air duct 202, and the main airflow flowing through the handle air duct 202 passes through the circuit board 310, so that the heat generated by the circuit board 310 can be taken away by the main airflow, improving the heat dissipation performance and efficiency of the circuit board 310, so that the temperature of the environment in which the circuit board 310 is located is relatively low. Compared with the prior art in which the control mechanism is in a high temperature environment for a long time, being in a low temperature environment helps to delay the aging efficiency of the circuit board 310 and prolong the service life of the circuit board 310. Moreover, being in a high temperature environment makes the circuit board 310 prone to failure, and being in a low temperature environment is beneficial to improve the working stability of the circuit board 310 and reduce the failure rate.

[0054] In the utility model, the main fluid passage and the secondary fluid passage 103 are formed in the hair dryer, the airflow passing through the main fluid passage is the main airflow, the airflow passing through the secondary fluid passage 103 is the secondary airflow, the air outlets of the main airflow and the secondary airflow are in the same direction and can be used for drying hair.

[0055] Continuing to refer to FIGS. 1, 2 and 3, Figure 1 and Figure 2 In some embodiments, the main body mechanism 100 comprises an inner shell structure 120 and an outer shell structure 110 which are sleeved with each other, and the inner shell structure 120 and the outer shell structure 110 are arranged along the first direction, and an annular cavity is formed between the inner shell structure 120 and the outer shell structure 110 along the first direction, which is the main body air duct 101 described above. Optionally, the inner shell structure 120 and the outer shell structure 110 are both tubular structures and are concentrically sleeved.

[0056] Optionally, the inner shell structure 120 has an extension length in the first direction equal to that of the outer shell structure 110, and the two ends of the inner shell structure 120 and the outer shell structure 110 in the first direction are substantially aligned respectively. The main body structure further comprises a ring-shaped end plate 130, which seals one end of the annular cavity in the first direction, so that one end of the annular cavity is closed and the other end forms a main air outlet 102 in the shape of a ring, which is the outlet of the main fluid passage.

[0057] The inner wall surface of the inner shell structure 120 surrounds to form a secondary fluid passage 103, which penetrates through the main body structure 100 along the first direction. The secondary fluid passage 103 forms a secondary fluid inlet at one end of the main body structure 100 along the first direction, and forms a secondary fluid outlet at the other end of the main body structure 100 along the first direction. Air outside the main body structure 100 enters the secondary fluid passage 103 through the secondary fluid inlet to form a secondary air flow, which is eventually discharged from the secondary fluid outlet. The main body structure 100 has an air inlet end and an air outlet end in the first direction, the air inlet end being the end forming the secondary fluid inlet, and the air outlet end being the end forming the secondary fluid outlet and the main air outlet 102.

[0058] The handle mechanism 200 extends along a second direction, and optionally, the first direction is perpendicular to the second direction. The main fluid passage comprises a main body air duct 101 located in the main body structure 100 and a handle air duct 202 located in the handle mechanism 200, which communicates with the annular cavity of the main body air duct 101. Optionally, a plurality of main air inlets 201 are arranged at the end of the handle mechanism 200 away from the main body structure 100, and each row of main air inlets 201 comprises a plurality of main air inlets 201 arranged in a row.

[0059] Continuing to refer to Figure 1 and Figure 2 , the handle mechanism 200 further comprises a motor 500, under the drive of which air enters the handle air duct 202 of the handle mechanism 200 from the main air inlets 201 and forms a main air flow, which flows to the main body air duct 101 according to the solid arrows shown in Figure 1 , and is eventually discharged from the main air outlet 102. Due to the flow of the main air flow, a negative pressure is formed at the secondary fluid outlet of the secondary fluid passage 103 (i.e. the air outlet end of the main body structure 100), under the action of which air outside the secondary fluid passage 103 (i.e. outside the air inlet end of the main body structure 100) enters the secondary fluid passage 103 through the secondary fluid inlet and eventually forms a secondary air flow.

[0060] Continuing to refer to Figure 1 and Figure 2As shown, the hair dryer further comprises a heating body 600, which is arranged in the main body air duct 101. Optionally, the heating body 600 is an electric heating wire or an electric heating plate, which can comprise a heating annular plate and a plurality of heating fins outwardly protruding along the circumference of the annular plate. Optionally, a power cord 800 is arranged at the handle mechanism 200, which is electrically connected with the heating body 600, the motor 500 and the circuit board 310, so as to supply power to the heating body 600, the motor 500 and the circuit board 310.

[0061] With reference to Figure 1 and Figure 2 As shown, a flow guide 140 is arranged in the annular cavity, which is used to guide the main airflow entering the annular cavity from the handle air duct 202 to the heating body 600 and mix uniformly. Optionally, the flow guide 140 is an annular flow guide plate, which is arranged obliquely relative to the central axis of the inner shell structure 120, and in the direction of the handle mechanism 200 pointing to the main body mechanism 100, the flow guide 140 is arranged obliquely towards the heating body 600. Of course, in other embodiments, the flow guide 140 can also be arranged in other shapes according to requirements.

[0062] In one specific embodiment, the flow guide 140 is integrally formed with the inner shell structure 120; in one specific embodiment, the flow guide 140 is integrally formed with the outer shell structure 110; in one specific embodiment, the flow guide 140 is integrally formed with the inner shell structure 120 and the outer shell structure 110; in one specific embodiment, the flow guide 140 is an independent structure independent of the inner shell structure 120 and the outer shell structure 110.

[0063] With reference to Figure 1 and Figure 2 As shown, an exhaust cover 150 is arranged at the main air outlet 102 in the annular cavity, which is used to exhaust air. Optionally, the exhaust cover 150 comprises an inner ring rib plate, an outer ring rib plate and a plurality of connecting rib strips, the inner ring rib plate and the outer ring rib plate are arranged in a nested manner, and the connecting rib strips are connected between the inner ring rib plate and the outer ring rib plate. Such arrangement not only does not affect the smoothness of exhaust, but also can play a protective role to avoid the user's fingers from contacting the heating body 600 to cause burns.

[0064] In the present application, in order to arrange the circuit board 310 in the handle mechanism 200 and enable the main airflow flowing through the handle air duct 202 to pass through the circuit board 310, the hair dryer adopts a plurality of different embodiments, which will be introduced in detail in the following four embodiments.

[0065] Embodiment one:

[0066] In the embodiment, the handle air duct 202 comprises at least two sub-ducts which are divided, and the motor 500 and the circuit board 310 are arranged in different sub-ducts respectively. Specifically, as shown in Figures 1 to 3 The handle mechanism 200 is provided with a dividing piece 400, which is used to divide the handle air duct 202 into at least a first air duct cavity 2021 and a second air duct cavity 2022. The circuit board 310 is arranged in the first air duct cavity 2021, and the motor 500 is arranged in the second air duct cavity 2022. Optionally, the dividing piece 400 is arranged in extension along the second direction.

[0067] It should be noted that the dividing piece 400 only divides the handle air duct 202 into the first air duct cavity 2021 and the second air duct cavity 2022. At least one end of the first air duct cavity 2021 and the second air duct cavity 2022 is communicated, and preferably both ends are communicated respectively. After the motor 500 is powered on, the air entering the handle mechanism 200 from the main air inlet 201 is divided into two parts. One part of the air passes through the motor 500 under the action of the motor 500 and flows to the end of the second air duct cavity 2022, and forms a negative pressure at the end of the second air duct cavity 2022. Under the action of the negative pressure, the other part of the air enters the first air duct cavity 2021 and flows to the end of the first air duct cavity 2021 after passing through the circuit board 310. The two air flows converge at the communication position of the ends of the first air duct cavity 2021 and the second air duct cavity 2022 and then enter the main body air duct 101.

[0068] Continuing to refer to Figure 1 and Figure 2 The handle mechanism 200 comprises a handle main pipe 210 and a handle air inlet cover 220 connected with each other. The handle main pipe 210 is connected with the main body mechanism 100. The dividing piece 400 and the circuit board 310 are arranged in the handle main pipe 210. The handle air inlet cover 220 is arranged at the end of the handle main pipe 210 away from the main body mechanism 100. The handle air inlet cover 220 is provided with the main air inlet 201. Optionally, the handle main pipe 210 and the handle air inlet cover 220 are detachably connected. The connection modes include but are not limited to plug-in cooperation, screw connection, magnetic attraction connection, etc. Optionally, the cross-sectional shape of the handle main pipe 210 is a track circle, a circle, an ellipse or a square with rounded corners. Of course, in addition to these shapes, the cross-section of the handle main pipe 210 can also be other regular or irregular shapes.

[0069] Optionally, the dividing piece 400 can be a one-piece structure or a split structure. Continuing to refer to Figure 1 and Figure 2As shown, the partition member 400 is composed of two parts, i.e., the first partition part 410 and the second partition part 420, which are arranged in an up-down manner. Such arrangement facilitates the installation of the motor 500. Of course, in other embodiments, the partition member 400 can also be composed of two parts, i.e., the first partition part 410 and the second partition part 420, which are arranged in a front-rear manner; or the first partition part 410 and the second partition part 420, which are arranged in a left-right manner.

[0070] Optionally, the second partition part 420 is in a tubular structure, and the cross section of the second partition part 420 is in a circular shape, a track shape or a square shape. Of course, in addition to these shapes, the cross section of the second partition part 420 can also be in other regular or irregular shapes. In a specific embodiment, as shown in Figure 3 the cross section of the second partition part 420 is in a circular shape, the cross section of the handle main pipe 210 is in a track shape, and the diameter of the second partition part 420 is equal to the width of the handle main pipe 210. Such layout makes the layout in the handle mechanism 200 compact and stable.

[0071] Optionally, the first partition part 410 is in a tubular structure, and the cross section of the first partition part 410 is in a track shape, a circular shape or a square shape. Of course, in addition to these shapes, the cross section of the first partition part 410 can also be in other regular or irregular shapes. That is, the first partition part 410 can be a straight pipe or a special-shaped pipe with different cross section shapes or different cross section sizes.

[0072] Of course, in addition to being in a tubular structure, the partition member 400 can also be in a partition plate in a sheet shape, and the two ends of the partition plate are connected to different sides of the inner wall surface of the handle mechanism 200.

[0073] Continuing to refer to Figure 1 and Figure 2 As shown, the circuit board 310 includes an electronic board member 311 and a plurality of electronic components 312 arranged on the electronic board member 311. Some of the electronic components 312 have a relatively large height, so that the electronic components 312 protrude from the electronic board member 311 to form a protruding part. In order to reasonably utilize the space in the handle mechanism 200 and to have a certain limiting effect on the circuit board 310, the partition member 400 includes a retracted part 401 for avoiding the protruding part on the circuit board 310. Optionally, the retracted part 401 is located at the top, the middle or the bottom of the support member.

[0074] In the present embodiment, the circuit board 310 is provided in one, and the length of the circuit board 310 is relatively long and extends in the second direction. One end of the circuit board 310 in the second direction extends to the top end of the first partition part 410 of the partition member 400, and the other end of the circuit board 310 in the second direction extends to the bottom end of the second partition part 420 of the partition member 400.

[0075] Optionally, in order to improve the heat dissipation effect on the circuit board 310, the air-permeable holes can be arranged on the partition piece 400, the first air duct cavity 2021 and the second air duct cavity 2022 are communicated through the air-permeable holes, so that the airflow in the second air duct cavity 2022 can directly enter the space in the first air duct cavity 2021 through the air-permeable holes and directly contact the circuit board 310, directly taking away the heat generated by the circuit board 310, improving the heat dissipation efficiency and heat dissipation effect on the circuit board 310. Optionally, the air-permeable holes are provided in multiple to improve the ventilation volume.

[0076] Continuing to refer to Figure 1 and Figure 2 , the control mechanism 300 further comprises at least one control button 320, and the control button 320 is arranged on the circuit board 310. The handle main pipe 210 is provided with a through hole, and the control button 320 is movably arranged in the through hole. In a specific embodiment, the control button 320 is provided with three, and the three control buttons 320 are arranged on the circuit board 310.

[0077] Embodiment two:

[0078] The structure of this embodiment two is basically the same as that of embodiment one, and the difference is only that, in this embodiment, as shown in Figure 4 and Figure 5 , the control mechanism 300 comprises at least two circuit boards 310 which are arranged in a spaced manner. In a specific embodiment, the circuit board 310 is provided with two, and the two circuit boards 310 are arranged in a spaced manner in the second direction and are electrically connected through wires.

[0079] The control mechanism 300 further comprises at least one control button 320, and the at least one control button 320 is arranged on the same circuit board 310 or different circuit boards 310. In a specific embodiment, the control button 320 is provided with three, and the three control buttons 320 are arranged on the upper circuit board 310.

[0080] Embodiment three:

[0081] In this embodiment, as shown in Figure 6 and Figure 7 , the handle air duct 202 is a single air duct, and the motor 500 and the circuit board 310 are located in the air duct. Optionally, the motor 500 and the circuit board 310 are arranged in a spaced manner in the second direction. Further optionally, the motor 500 is located between the circuit board 310 and the main body mechanism 100, that is, the circuit board 310 is located in the distal end of the handle mechanism 200 away from the main body mechanism 100.

[0082] In the embodiment, the handle mechanism 200 comprises a handle main pipe 210 and a handle air inlet cover 220 connected to each other, the handle main pipe 210 is connected to the body mechanism 100, the handle air inlet cover 220 is arranged at one end of the handle main pipe 210 away from the body mechanism 100, and the handle air inlet cover 220 is provided with the main air inlet 201. Optionally, the motor 500 is located in the handle main pipe 210; and optionally, the circuit board 310 is at least partially located in the handle air inlet cover 220, so that the circuit board 310 is closer to the main air inlet 201 and farther away from the heating body 600, which is conducive to further improving the heat dissipation effect on the circuit board 310.

[0083] Continuing to refer to Figure 6 and Figure 7 , in order to realize the fixed blowing device for the circuit board 310, the fixing device further comprises a mounting box 900, the mounting box 900 is arranged in the handle mechanism 200, the circuit board 310 is arranged in the mounting box 900, and the main air flow flows through the inside of the mounting box 900.

[0084] Further, in order to improve the functionality of the mounting box 900, so that the mounting box 900 can support the motor 500, so as to improve the stability of the motor 500 in the handle mechanism 200, in some embodiments, as shown in Figures 8 to 13 , the mounting box 900 comprises a supporting part 910 and a containing part 920, the supporting part 910 is located on the side close to the motor 500, and the supporting part 910 supports the motor 500, and the circuit board 310 is arranged in the containing part 920. Optionally, the supporting part 910 is located in the handle main pipe 210, and the containing part 920 is arranged in the handle air inlet cover 220.

[0085] In a specific embodiment, as shown in Figures 8 to 11 , the supporting part 910 is a tubular structure, the top of the containing part 920 is connected to the bottom of the supporting part 910, and the over-air gap 930 is formed between the top of the containing part 920 and the bottom of the supporting part 910. Specifically, the cross-sectional dimension of the containing part 920 is smaller than the cross-sectional dimension of the supporting part 910, so that the over-air gap 930 can be formed between the top of the containing part 920 and the bottom of the supporting part 910. The relative relationship between the containing part 920 and the supporting part 910 can be that the containing part 920 and the supporting part 910 are coaxially arranged, as shown in Figure 8 and Figure 9 , or the containing part 920 is arranged on the side close to the supporting part 910, as shown in Figure 10 and Figure 11 . Optionally, the containing part 920 is a box-shaped structure with an open top and a blocked bottom.

[0086] In a parallel embodiment, as shown in Figure 12 and Figure 13As shown, the support part 910 is a tubular structure, the support part 910 is sleeved outside the accommodating part 920, and the top of the support part 910 protrudes outside the top of the accommodating part 920. The portion opposite to the accommodating part 920 of the support part 910 is provided with a through air hole 911. Optionally, the accommodating part 920 is a tubular structure, and a bottom plate is further arranged at the bottom of the support part 910, which simultaneously seals the bottom opening of the accommodating part 920. Optionally, a plurality of through air holes 911 are arranged at intervals in the circumferential direction of the support part 910. Optionally, the through air hole 911 is a long hole or a circular hole.

[0087] Further, the cross-sectional shape of the accommodating part 920 and the cross-sectional shape of the support part 910 can be the same or different. Optionally, the cross-sectional shape of the support part 910 is circular, elliptical, track-shaped or square. Optionally, the cross-sectional shape of the accommodating part 920 is circular, elliptical, track-shaped or square. Of course, in addition to these shapes, the cross-sectional shape of the support part 910 and the cross-sectional shape of the accommodating part 920 can also be other regular or irregular shapes.

[0088] Optionally, in order to improve the heat dissipation effect of the circuit board 310, a ventilation hole can be arranged on the accommodating part 920, and the space inside the accommodating part 920 and the space outside the accommodating part 920 are communicated through the ventilation hole. Preferably, the space inside the accommodating part 920 and the channel for the main airflow are communicated through the ventilation hole, so that the external air can directly enter the space inside the accommodating part 920 through the ventilation hole and directly contact the circuit board 310, directly taking away the heat generated by the circuit board 310, and improving the heat dissipation efficiency and effect of the circuit board 310. Optionally, a plurality of ventilation holes are arranged to improve the ventilation volume.

[0089] Continuing to refer to Figure 6 As shown, the main body mechanism 100 and the handle mechanism 200 are inserted and matched, the main body mechanism 100 includes an insertion part 160 inserted into the handle mechanism 200, and the motor 500 is clamped between the insertion part 160 and the support part 910, which is beneficial to further improve the stability of the handle mechanism 200 in the motor 500.

[0090] Embodiment four:

[0091] In this embodiment, as shown in Figure 14 and Figure 15 As shown, the handle air duct 202 is a single air duct, and the motor 500 and the circuit board 310 are located in the air duct. Optionally, the motor 500 and the circuit board 310 are arranged at intervals in the second direction. Further optionally, the circuit board 310 is located between the motor 500 and the main body mechanism 100, that is, the circuit board 310 is located in the proximal end of the handle mechanism 200 close to the main body mechanism 100.

[0092] In the embodiment, the handle mechanism 200 comprises a handle main pipe 210 and a handle air inlet cover 220 connected with each other, the handle main pipe 210 is connected with the body mechanism 100, the handle air inlet cover 220 is arranged at one end of the handle main pipe 210 away from the body mechanism 100, the handle air inlet cover 220 is provided with the main air inlet 201, and the circuit board 310 and the motor 500 are located in the handle main pipe 210.

[0093] Continuing to refer to Figure 14 Fig. 2, the body mechanism 100 and the handle mechanism 200 are inserted and matched, the body mechanism 100 comprises an insertion part 160 inserted into the handle mechanism 200, and the circuit board 310 is located in the insertion part 160. In this way, the space in the insertion part 160 can be reasonably utilized, and the compactness of the structure can be improved.

[0094] In a specific embodiment, as shown in Figure 16 and Figure 17 , a partition plate 1000 is arranged in the insertion part 160, the partition plate 1000 is used to divide the insertion part 160 into at least an installation cavity and an air passing cavity, the circuit board 310 is arranged in the installation cavity, and the body air channel 101 comprises the air passing cavity.

[0095] As to the shape of the partition plate 1000, it can be a single plate member as shown in Figure 16 , two ends of the plate member are connected with different sides of the inner side wall of the insertion part 160 respectively, so as to divide the space in the insertion part 160 into two parts of the installation cavity and the air passing cavity, the top end of the installation cavity is closed and arranged to accommodate the circuit board 310, and both ends of the air passing cavity are open and arranged to form the communication with the body channel.

[0096] The shape of the partition plate 1000 can also be a frame structure formed by a plurality of plate members as shown in Figure 17 , the plurality of plate members are arranged around the middle position in the insertion part 160 to form the installation cavity, and the air passing cavity is formed between the outer wall surface of the partition plate 1000 and the inner wall surface of the insertion part 160.

[0097] In order to improve the heat dissipation effect on the circuit board 310, as shown in Figure 14 , Figure 15 and Figure 16 , the partition plate 1000 is provided with a ventilation hole 1100, the ventilation hole 1100 communicates the installation cavity and the air passing cavity, the airflow passing through the air passing cavity can enter the installation cavity through the ventilation hole 1100 and directly contact the circuit board 310, so as to directly take away the heat generated by the circuit board 310, and the heat dissipation efficiency and effect on the circuit board 310 are improved. Optionally, the ventilation hole 1100 is provided with a plurality of ventilation holes to improve the ventilation volume.

[0098] Optionally, if the partition plate 1000 is as shown in Figure 17 , the ventilation hole 1100 is arranged on the partition plate 1000, and the air passing cavity is arranged on the inner wall surface of the insertion part 160.The air vent 1100 can be arranged on any plate, i.e. the air vent 1100 can be arranged on the top or side of the installation cavity, or arranged on the top and side simultaneously.

[0099] If the partition 1000 is a single plate, the air vent 1100 can be arranged on the plate and the part of the shell structure 110 of the main mechanism 100 which forms the installation cavity, i.e. the air vent 1100 can be arranged on the top or side of the installation cavity, or arranged on the top and side simultaneously. Figure 16

[0100] Continuing to refer to the drawings shown in Figure 14 and Figure 15 The blowing device further comprises a support pipe 700 arranged inside the handle mechanism 200 and supported on the bottom of the motor 500. Optionally, the cross section of the support pipe 700 is circular, track-shaped or square, and of course, the cross section of the support pipe 700 can be other regular or irregular shapes.

[0101] Finally, it should be noted that in all the above embodiments, by arranging the circuit board 310 inside the handle mechanism 200 and in the main fluid channel, the cross-sectional size of the main fluid channel at the circuit board 310 is reduced, and the air passing through the narrow channel is accelerated under the action of the Coanda effect, thereby increasing the flow speed of the air in the main fluid channel and facilitating the acceleration of the evaporation speed of the water in the hair.

[0102] The circuit board 310 can be a centralized or distributed controller, for example, the controller can be a single microcontroller or a plurality of microcontrollers distributed in multiple blocks, and the microcontroller can run a control program to control the heating body 600, the motor 500, etc. to realize their respective functions.

[0103] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the scope of the present application. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.​

Claims

1. A hair drying device, characterized in that, The hair dryer comprises: a main body (100) having a main air outlet (102) formed thereon, and a main body air duct (101) formed in the main body (100) and communicating with the main air outlet (102); a handle mechanism (200) connected with the main body (100), the handle mechanism (200) having a main air inlet (201) formed thereon, and a handle air duct (202) formed in the handle mechanism (200) and communicating with the main air inlet (201) and the main body air duct (101); a control mechanism (300) comprising a circuit board (310), the circuit board (310) being arranged in the handle air duct (202), and a main airflow flowing through the handle air duct (202) passing through the circuit board (310).

2. The blow-off device according to claim 1, characterized in that The handle mechanism (200) is provided with a partition member (400) for dividing the handle air duct (202) into at least a first air duct cavity (2021) and a second air duct cavity (2022), and the circuit board (310) is arranged in the first air duct cavity (2021); The hair dryer further comprises a motor (500) arranged in the second air duct cavity (2022).

3. The hair dryer according to claim 2, wherein: The circuit board (310) is provided in one, and the control mechanism (300) further comprises at least one control button (320) arranged on the circuit board (310); Alternatively, the control mechanism (300) comprises at least two circuit boards (310) arranged separately, and the control mechanism (300) further comprises at least one control button (320), at least one of the control buttons (320) being arranged on the same circuit board (310) or different circuit boards (310).

4. The hair dryer according to claim 2, wherein: The partition member (400) comprises a contraction portion (401) for avoiding a protrusion on the circuit board (310).

5. The hair dryer according to claim 1, wherein: The handle mechanism (200) is in a tubular structure, and the handle mechanism (200) has a cross-section in the shape of a racetrack, a circle, an ellipse, or a square with rounded corners.

6. The blow-off device according to claim 2, characterized in that The handle mechanism (200) comprises a handle main pipe (210) and a handle air inlet cover (220) connected with each other, the handle main pipe (210) is connected with the main body (100), the partition member (400) and the circuit board (310) are arranged in the handle main pipe (210), the handle air inlet cover (220) is arranged at an end of the handle main pipe (210) away from the main body (100), and the handle air inlet cover (220) is provided with the main air inlet (201).

7. The blow-off device according to claim 1, characterized in that The hair dryer further comprises a motor (500), which is arranged in the handle mechanism (200) and located between the circuit board (310) and the main body mechanism (100).

8. The blow-off device according to claim 7, characterized in that The hair dryer further comprises a mounting box (900), which is arranged in the handle mechanism (200), and the circuit board (310) is arranged in the mounting box (900), and the main airflow flows through the inside of the mounting box (900).

9. The hair drying device of claim 8, wherein, The mounting box (900) comprises a supporting part (910) and a containing part (920), the supporting part (910) is located close to the motor (500), and the circuit board (310) is arranged in the containing part (920).

10. The hair drying device of claim 9, wherein The supporting part (910) is a tubular structure, the supporting part (910) is sleeved outside the containing part (920), and the top of the supporting part (910) protrudes outside the top of the containing part (920), and the part opposite to the containing part (920) of the supporting part (910) is provided with a wind passing hole (911); Alternatively, the supporting part (910) is a tubular structure, the top of the containing part (920) is connected with the bottom of the supporting part (910), and a wind passing gap (930) is formed between the top of the containing part (920) and the bottom of the supporting part (910).

11. The hair drying device of claim 9, wherein The handle mechanism (200) comprises a handle main pipe (210) and a handle air inlet cover (220) connected with each other, the handle main pipe (210) is connected with the main body mechanism (100), the handle air inlet cover (220) is arranged at one end of the handle main pipe (210) away from the main body mechanism (100), and the handle air inlet cover (220) is provided with the main air inlet (201); The supporting part (910) is located in the handle main pipe (210), and the containing part (920) is at least partially arranged in the handle air inlet cover (220).

12. The hair drying device of claim 1, wherein, The hair dryer further comprises a motor (500), which is arranged in the handle mechanism (200) and located between the circuit board (310) and the main body mechanism (100).

13. The hair drying device of claim 12, wherein, The main body mechanism (100) and the handle mechanism (200) are inserted and matched, the main body mechanism (100) comprises an insertion part (160) inserted into the handle mechanism (200), and the circuit board (310) is located in the insertion part (160).

14. The hair drying device of claim 13, wherein, The insertion part (160) is provided with a partition plate (1000), the partition plate (1000) is used for dividing the insertion part (160) into at least an installation cavity and a wind passing cavity, the circuit board (310) is arranged in the installation cavity, and the wind passing cavity is communicated with the main body air duct (101).

15. The hair drying device of claim 1, wherein, The handle mechanism (200) comprises a handle main pipe (210) connected with the main body mechanism (100) and a handle air inlet cover (220) arranged at one end of the handle main pipe (210) away from the main body mechanism (100), wherein the main air inlet (201) is arranged on the handle air inlet cover (220), and the circuit board (310) is arranged in the handle air inlet cover (220) and / or the handle main pipe (210).

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