Miniaturized double-air-inlet blower

Abstract

The invention discloses a miniaturized double-air-inlet blower which comprises a shell and a fan. The shell comprises a first shell body; the shell is provided with a first air duct and a second air duct which are communicated with each other; the first air duct penetrates through the fan from an air inlet of the fan; the second air duct comprises a first gap, and the first gap is communicated with an air inlet of the fan; and the first circulation passage is arranged along the arrangement direction of the second shell. The first circulation passage is arranged in the second shell, so that the second air channel enters from the second shell, then flows to the first gap through the first circulation passage, and finally converges with the first air channel to be input into the fan, and therefore, a double-air-channel air inlet operation mode is formed. The shell is internally provided with the first air channel and the second air channel which are communicated with each other, the second air channel comprises the first gap formed between the fan and the first shell, the two air channels are provided for air supply in the operation process of the electric hair drier, fluid passes through the outer edge of the fan for synchronous heat dissipation in the air supply process, and the heat dissipation performance of the fan is better.

Description

Technical Field

[0001] The invention belongs to the technical field of hair dryers, and in particular relates to a miniaturized double-air-inlet hair dryer. Background Art

[0002] A hair dryer is a device that uses a motor to drive fluid entering from the outside and output it, and is often used in daily hair drying and other scenarios. The hair dryer includes a shell and a fan arranged in the shell. The air from the outside is sucked in by the rotation of the fan, and is output through an air outlet in a limited path. In the prior art, the motor of the hair dryer generates heat during operation, but currently only the method of outputting the fluid through the center of the fan cannot effectively dissipate the heat of the fan. At the same time, in the prior art, since the air inlet end only takes in air through an air inlet hole of a single path, the air volume cannot meet the demand for a larger air volume. Therefore, it is necessary to develop a miniaturized double-inlet hair dryer. Summary of the invention

[0003] The purpose of the present invention is to provide a miniaturized double-inlet hair dryer to solve the above technical problems. A first flow passage is set in the second shell, so that the second air duct can enter from the second shell, and then flow through the first flow passage to the first gap, and finally merge with the first air duct to be input into the blower, thereby forming a double-air duct air intake operation mode. A first air duct and a second air duct are connected in the shell, wherein the second air duct includes a first gap set between the blower and the first shell, so that there are two air ducts for air supply during the operation of the hair dryer, and the fluid is dissipated synchronously through the outer edge of the blower during the air supply process, so that the heat dissipation of the blower is better.

[0004] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is as follows:

[0005] A miniaturized double-inlet hair dryer comprises a housing and a fan fixedly arranged in the housing, wherein the housing comprises a first housing, and the fan is arranged in the first housing; the housing is provided with a first air duct and a second air duct connected to each other;

[0006] The first air duct runs through the fan from the fan air inlet; the second air duct includes a first gap set between the fan and the first shell, and the first gap is connected to the fan air inlet. The shell is provided with a first air duct and a second air duct that are connected, wherein the second air duct includes the first gap set between the fan and the first shell, so that there are two air ducts for air supply during the hair dryer operation, and the fluid is dissipated synchronously through the outer edge of the fan during the air supply process, so that the heat dissipation of the fan is better.

[0007] Preferably, the fan includes a fan body, a connecting shell sleeved on the outer periphery of the fan body, and a first gap is set between the connecting shell and the first shell. The first gap is set horizontally. The connecting shell is sleeved on the outer periphery of the fan body and fixed in the first shell, so that the fixing stability of the fan body is stronger, and the problem of overall rotation during the operation of the fan is avoided. The first gap is set between the connecting shell and the first shell to provide space for the second air duct to circulate, and the fan body is heat-exchanged during the fluid circulation process, thereby dissipating the heat of the fan, so that the fan has good heat dissipation performance.

[0008] Preferably, the connecting shell is coaxially arranged in the first shell, and one or more flow slots are arranged through the connecting shell, and the flow slots are connected to the first gap. During the flow of the fluid in the first gap, since the flow slots are in a penetrating state, the fluid can flow into the flow slots and contact the fan body, thereby exchanging heat with the fan body and improving the heat exchange effect of the fan. At the same time, the flow slots are arranged to guide the flow direction of the fluid.

[0009] Preferably, a fourth gap is provided between the fan body and the connecting shell, and the fourth gap is connected to the flow slot body and the first gap. The fourth gap is provided to allow more fluid to flow from the flow slot body to between the fan body and the connecting shell, thereby achieving a better heat exchange effect of the fan.

[0010] Preferably, one or more contact points are arranged on the periphery of the fan body, which contact with the inner surface of the connection shell, and the contact points are arranged in the fourth gap. The contact points are arranged to provide a fulcrum for setting the fourth gap between the connection shell and the fan body, and at the same time, the fan body is fixedly arranged in the connection shell to prevent the fan body from rotating as a whole in the connection shell.

[0011] Preferably, the contact point is hemispherical.

[0012] Preferably, a resistance block is provided at one end of the connection housing, and a resistance end for resisting against the resistance block and thus limiting the position is provided at the air inlet of the fan body, so as to prevent the fan from escaping from the end of the connection housing to the outside.

[0013] Preferably, the connecting shell is connected to a first air inlet module at one end close to the air inlet of the fan, the first air inlet module is partially embedded in the first shell, the first air inlet module is coaxially arranged with the fan, and the first air inlet module is connected with the air inlet of the fan and the first gap. A first air supply module is provided, and the first air inlet module is embedded in the first shell, providing a module for air intake for the first air duct, the first air inlet module is connected with the first gap, so that the output end of the first air inlet module is connected with the output end of the first gap;

[0014] Preferably, the first air inlet module includes a first air inlet block and a first connecting block coaxially engaged with and fixed to the first air inlet block, wherein the first connecting block is coaxially buckled and connected to one end of the outer periphery of the connecting shell near the air inlet of the fan. After the air inlet block is arranged and fixed by the first connecting block, the first connecting block is connected to the outer periphery of the connecting shell by buckles, and this assembly method is simple and reduces the difficulty of production.

[0015] Preferably, the connection housing is provided with a first protrusion at the buckle connection with the first connection block, the first protrusion is in conflict with the axial inner surface of the first connection block, and connecting grooves connected to the air inlet of the fan and the first gap are provided on both sides of the first protrusion, so that the second air duct can flow to the air supply end of the first air supply module through the first gap and the connecting grooves, thereby merging with the first air duct and flowing into the fan.

[0016] Preferably, the first air inlet block, the first connecting block and the first gap are interconnected. In the first air duct, the external fluid passes through the first air inlet block and the first connecting block and then enters the fan air inlet; the fluid in the second air duct flows through the first gap to the air supply end of the first connecting block and enters the fan air inlet.

[0017] Preferably, the first housing is provided with a second protrusion in the opposite direction of the air inlet direction of the fan, and the inner surface of the first connecting block is provided with a first engaging groove body engaged with the second protrusion. The first housing is used to limit the first connecting block circumferentially, thereby fixing the fan connected to the first connecting block and preventing the fan from rotating as a whole;

[0018] Preferably, the first connecting block is provided with a second fitting groove at the buckle connection with the connecting shell, and the first protrusion is fitted in the second fitting groove, so as to prevent the connecting shell from rotating circumferentially relative to the first shell and the first connecting block, thereby improving the stability of the fan operation.

[0019] Preferably, the first air inlet block is provided with a plurality of first air inlet holes. The first air inlet holes are connected to the fan air inlet, the first gap, and the connecting slot body, and the first air duct is arranged in a direction in which the first air inlet holes, the fan air inlet, and the fan air outlet are arranged in sequence. A plurality of first air inlet holes are provided so that external fluid can flow to the fan air inlet through the first air inlet holes.

[0020] Preferably, the first air inlet hole is coaxially arranged in multiple circles around the axis of the first air inlet block, so as to increase the air supply volume.

[0021] Preferably, along the radial direction of the axis of the first air inlet block, the aperture of the first air inlet hole increases gradually. With different apertures, the amount of fluid entering from the radial direction of the flow direction during the process of fluid entering is kept constant at all locations.

[0022] Preferably, the first air inlet hole is a circular hole, which is convenient for air intake operation.

[0023] Preferably, the housing further comprises a second housing vertically arranged below and connected to the first housing; the second air duct further comprises a first flow passage connected to the first gap, and the first flow passage is arranged along the setting direction of the second housing. The first flow passage is arranged in the second housing, so that the second air duct can enter from the second housing, and then flow to the first gap through the first flow passage, and finally merge with the first air duct to be input into the fan, thereby forming a double air duct air intake operation mode.

[0024] Preferably, the outer periphery of the connecting shell is sleeved with a sealing ring, the outer periphery of the sealing ring is in contact with the inner surface of the first shell, and the first shell, the sealing ring and the connecting shell are arranged in sequence from the outside to the inside.

[0025] Preferably, the sealing ring is arranged at an end away from the air inlet of the fan, wherein the sealing ring is arranged only at an end close to the air outlet of the fan.

[0026] Preferably, the connection housing is provided with a connection groove body which is engaged with the sealing ring, so as to make the connection position of the sealing ring more stable and avoid the problem of shaking and displacement of the sealing ring.

[0027] Preferably, the sealing ring is arranged to overlap with the vertical projection of the first flow passage, so as to prevent the vertical air inlet of the first flow passage from directly entering the air outlet of the fan, thereby avoiding the problem of cross-flow.

[0028] Preferably, in vertical projection, the fan partially overlaps with the first flow passage, so that the fluid can directly enter the first gap when entering through the first flow passage, complete heat exchange with the fan and be transmitted to the first air passage for confluence.

[0029] Preferably, the switch module includes a first frame body disposed in the second housing and connected to the first housing, a switch button disposed in the first frame body and extending to the outside, and the switch button, the first frame body, and the first air flow passage are disposed in sequence. In vertical projection, the first frame body and the first gap do not overlap each other; only the first air flow passage is disposed in the second housing vertically corresponding to the first gap, and the partition arrangement is performed to avoid affecting the air supply effect of the first air flow passage.

[0030] Preferably, the inner shell and the outer shell are provided with a clamping part at one end away from the first shell to prevent the outer shell from rotating. The clamping part can effectively connect and fix the inner shell and the outer shell, prevent the outer shell from falling out axially, and prevent the outer shell from rotating circumferentially.

[0031] Preferably, the clamping portion includes a first connection module that is fixedly connected to the inner shell and limits the circumference of the outer shell. The first connection module is provided to connect the inner shell and the outer shell to prevent the two from being separated.

[0032] Preferably, the first connection module comprises a first connection block fixedly connected to the inner shell, and a first limiting groove arranged at the upper end of the first connection block;

[0033] The outer surface of the outer shell is provided with a first limiting strip embedded in the first limiting groove. The first connecting block is fixedly connected to the inner shell by screws.

[0034] Preferably, the first limiting grooves and the first limiting strips are arranged in one or more groups. Centered on the axis of the first connection block, the first limiting grooves and the first limiting strips are arranged in one or more groups around the axis of the first connection block; multiple groups are arranged to improve the stability of the limit.

[0035] Preferably, the first connecting block is coaxially provided with a first embedding hole and a first embedding groove in sequence from the inside to the outside, and the first limiting groove is provided on the outer periphery of the first embedding groove;

[0036] The inner housing is provided with a first engaging portion engaged with the first engaging hole and a second engaging portion engaged with the first engaging groove. It has multiple engaging positions to improve the connection stability between the inner housing and the first connecting block, and avoid the shaking of the two after connection to affect the connection stability with the outer housing.

[0037] Preferably, the clamping part further comprises a second connection block and / or a third connection block connected to the first connection block, so that the connection stability of the clamping part to the outer shell is stronger.

[0038] Preferably, the first connection module further comprises a first buckle which is fixedly arranged at the lower end of the first connection block and connected to the second connection block and / or a second buckle which is connected to the third connection block.

[0039] Preferably, the third connecting block is fixedly disposed between the first connecting block and the second connecting block.

[0040] Preferably, with the axis of the first connection block as the center, one or more first buckles and second buckles are sequentially arranged in radial direction. Arranging multiple buckles is conducive to improving the connection stability.

[0041] Preferably, the second connection block is provided with a first buckle connection hole connected to the first buckle; the third connection block is provided with a second buckle connection hole connected to the second buckle. The first buckle connection holes are arranged in groups corresponding to the first buckles and one or more groups are arranged; the second buckle connection holes are arranged in groups corresponding to the second buckles and one or more groups are arranged; the connection is made by buckle, which is convenient for assembly, and after connection, it is conducive to the resistance to the axial direction of the outer shell, thereby improving the stability of the connection effect.

[0042] Preferably, the second connection block is provided with a second fitting groove that fits with the second buckle, and the second fitting groove does not overlap with the vertical projection of the first buckle connection hole. Connecting by means of buckles is convenient for assembly, and after connection, it is conducive to resisting the axial direction of the outer shell, thereby improving the stability of the connection effect.

[0043] Preferably, the second connection block is provided with one or more second air inlet holes connected with the first flow passage. The second air inlet holes are provided so that the fluid can flow from the second connection block to the first flow passage, forming a vertical flow effect of the fluid.

[0044] Preferably, the second air inlet holes are coaxially arranged in multiple circles around the axis of the second block to increase the air delivery rate.

[0045] Preferably, the inner shell is provided with a connecting port connecting the first flow passage and the second air inlet hole, so that the external air flow can flow through the second air inlet hole, the connecting port and the first flow passage.

[0046] The first engaging parts penetrate the first connecting block, the second connecting block and the third connecting block and are connected to the outside so as to connect the external power supply of the circuit board;

[0047] This application has achieved beneficial technical effects:

[0048] The present invention sets a first flow passage in the second shell, so that the second air duct can enter from the second shell, and then circulate to the first gap through the first flow passage, and finally merge with the first air duct to be input into the fan, thereby forming a dual-air duct air intake operation mode. The shell is provided with a first air duct and a second air duct that are connected, wherein the second air duct includes a first gap set between the fan and the first shell, so that there are two air ducts for air supply during the operation of the hair dryer, and the fluid is dissipated synchronously through the outer edge of the fan during the air supply process, so that the fan has better heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 Shown is a schematic structural diagram of the present invention;

[0050] Figure 2 Another schematic diagram of the structure of the present invention is shown;

[0051] Figure 3 Shown Figure 2 AA section structural diagram;

[0052] Figure 4 Shown Figure 2 DD-direction cross-sectional structural diagram;

[0053] Figure 5 Shown Figure 2 EE section structural diagram;

[0054] Figure 6 Shown Figure 1 Schematic diagram of CC-section structure;

[0055] Figure 7 Shown is one of the exploded structure schematic diagrams of the present invention;

[0056] Figure 8 Shown is the second schematic diagram of the explosion structure of the present invention;

[0057] Fig. 9 Shown is the third schematic diagram of the explosion structure of the present invention;

[0058] Fig.10 Shown is the fourth schematic diagram of the explosion structure of the present invention

[0059] Fig.11 Shown is the fifth schematic diagram of the explosion structure of the present invention;

[0060] Fig.12 Shown Figure 3 One of the partial enlarged structural schematic diagrams;

[0061] Fig.13 Shown Figure 3 The second schematic diagram of the local enlarged structure;

[0062] Fig.14 Shown Figure 1 A partial schematic diagram of the cross-sectional structure in the GG direction;

[0063] Fig.15 Shown is the sixth schematic diagram of the explosion structure of the present invention;

[0064] Fig.16 Shown is the seventh schematic diagram of the explosion structure of the present invention;

[0065] Fig.17 Shown is the eighth schematic diagram of the explosion structure of the present invention;

[0066] Fig.18 Shown is a side view schematic diagram of the structure of the present invention;

[0067] Fig.19 Shown Fig.18 A schematic diagram of a local structure in cross section along the HH axis;

[0068] Fig. 20 Shown Fig.18 Schematic diagram of the local structure in section along JJ direction. DETAILED DESCRIPTION

[0069] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0070] The technical solution of the present invention is described in detail below with specific embodiments.

[0071] Example 1

[0072] Reference Figures 1 to 14 A miniaturized double-inlet hair dryer comprises a housing and a fan 3 fixedly arranged in the housing, wherein the housing comprises a first housing 1, and the fan 3 is arranged in the first housing 1; the housing is provided with a first air duct and a second air duct connected to each other;

[0073] The first air duct runs through the fan from the air inlet of the fan 3; the second air duct includes a first gap 30 set between the fan 3 and the first housing 1, and the first gap 30 is connected to the air inlet of the fan 3. The housing is provided with a first air duct and a second air duct that are connected, wherein the second air duct includes the first gap 30 set between the fan 3 and the first housing 1, so that there are two air ducts for air supply during the hair dryer operation, and the fluid is dissipated synchronously through the outer edge of the fan during the air supply process, so that the heat dissipation of the fan is better.

[0074] The fan 3 includes a fan body 31 and a connecting shell 32 sleeved on the outer periphery of the fan body 31, and a first gap 30 is set between the connecting shell 32 and the first shell 1. The connecting shell 32 is fixedly connected to the first shell 1, wherein the first shell 1 is provided with a first threaded post 118; the connecting shell 32 is provided with a second threaded post 328 coaxially arranged with the first threaded post 118, and the first threaded post 118 and the second threaded post 328 are connected by screws, so that the connecting shell 32 is fixedly connected to the first shell 1; the first gap 30 is set horizontally. The connecting shell 31 is sleeved on the outer periphery of the fan body 31 and 32 is fixed in the first shell 1, so that the fixing stability of the fan body 31 is stronger, and the problem of overall rotation during the operation of the fan is avoided. The first gap 30 is set between the connecting shell 32 and the first shell 1 to provide space for the second air duct to circulate, and the fan body is heat-exchanged during the flow of fluid, thereby dissipating the heat of the fan, so that the fan has good heat dissipation performance. The connecting shell 32 is assembled from two modules connected by snaps;

[0075] The connecting housing 32 is coaxially arranged in the first housing 1, and one or more flow slots 321 are arranged through the connecting housing 32, and the flow slots 321 are connected with the first gap 30. During the flow of the fluid in the first gap 30, since the flow slots 321 are in a penetrating state, the fluid can flow into the flow slots 321 and contact the outer periphery of the fan body 31, thereby performing heat exchange on the fan body 31, improving the heat exchange effect of the fan, and at the same time, the flow slots 321 are arranged to guide the flow direction of the fluid.

[0076] A fourth gap 33 is provided between the fan body 31 and the connecting shell 32, and the fourth gap 33 is connected to the flow slot 321 and the first gap 30. The fourth gap 33 allows more fluid to flow from the flow slot 321 to between the fan body 31 and the connecting shell 32, and the heat exchange effect of the fan is better.

[0077] One or more contact points 311 that contact the inner surface of the connecting shell 32 are arranged on the outer periphery of the fan body 31, and the contact points 311 are arranged in the fourth gap 33. The contact points 311 are arranged to provide a fulcrum for setting the fourth gap 33 between the connecting shell 32 and the fan body 31, and at the same time, the fan body 31 is fixedly arranged in the connecting shell 32 to prevent the fan body 31 from rotating as a whole in the connecting shell. Preferably, a rubber sleeve is arranged on the outer periphery of the fan body, and the contact points 311 are arranged on the rubber sleeve, and the rubber sleeve is arranged to play a role in shock absorption and noise reduction.

[0078] The contact point 311 is hemispherical.

[0079] The connecting shell 32 is provided with a resisting block 322 at one end, and the fan body 31 is provided with a resisting end 312 at the air inlet for resisting the resisting block 322 and thus limiting the position, so as to prevent the fan from escaping from the end of the connecting shell 32 to the outside.

[0080] The connecting shell 32 is connected to the first air inlet module 4 at one end close to the air inlet of the fan. The first air inlet module 4 is partially embedded in the first shell 1. The first air inlet module 4 is coaxially arranged with the fan 3. The first air inlet module 4 is connected with the air inlet of the fan 3 and the first gap 30. A first air supply module 4 is provided, and the first air inlet module 4 is embedded in the first shell 1. It is a module for providing air intake for the first air duct. The first air inlet module is connected with the first gap 30, so that the output end of the first air inlet module is connected with the output end of the first gap 30;

[0081] The first air inlet module 4 includes a first air inlet block 41 and a first connecting block 42 coaxially engaged with and fixed to the first air inlet block 41. The first connecting block 42 is coaxially buckled and connected to one end of the outer periphery of the connecting shell 32 close to the air inlet of the fan. After the first air inlet block 41 is set and fixed by the first connecting block 42, the first connecting block 42 is connected to the outer periphery of the connecting shell 32 by buckles. This assembly method is simple and reduces the difficulty of production.

[0082] The connecting housing 32 is provided with a first protrusion 323 at the place where it is snap-connected with the first connecting block 42. The first protrusion 323 abuts against the axial inner surface of the first connecting block 42. The first protrusion 323 is provided with connecting grooves 324 on both sides thereof, which are connected with the air inlet of the fan 3 and the first gap 30. The second air duct can flow to the air supply end of the first air supply module through the first gap 30 and the connecting grooves 324, and then merge with the first air duct and flow into the fan.

[0083] The first air inlet block 41, the first connecting block 42 and the first gap 30 are all interconnected. In the first air duct, the external fluid passes through the first air inlet block 41 and the first connecting block 42 and then enters the fan air inlet; the fluid in the second air duct flows through the first gap 30 to the air supply end of the first connecting block 42 and enters the fan air inlet.

[0084] The air inlet end of the first housing 1 is provided with a second protrusion 15, and the inner surface of the first connecting block 42 is provided with a first engaging groove 421 engaged with the second protrusion 15. The first housing circumferentially limits the first connecting block, thereby fixing the fan connected to the first connecting block to prevent the overall rotation of the fan;

[0085] The first connecting block 42 is provided with a second fitting groove 422 at the buckle connection with the connecting housing 32, and the first protrusion 323 is fitted in the second fitting groove 422. This prevents the connecting housing from rotating circumferentially relative to the first housing and the first connecting block, thereby improving the stability of the fan operation.

[0086] The first air inlet block 41 is provided with a plurality of first air inlet holes 411. The first air inlet holes 411 are connected to the air inlet of the fan 3, the first gap 30, and the connecting slot 324. The first air duct is arranged in a direction in which the first air inlet holes 411, the fan air inlet, and the fan air outlet are arranged in sequence. The plurality of first air inlet holes 411 are provided so that the external fluid can flow to the fan air inlet through the first air inlet holes 411.

[0087] The first air inlet holes 411 are coaxially arranged in multiple circles around the axis of the first air inlet block 41, so as to increase the air supply volume.

[0088] The aperture of the first air inlet hole 411 gradually increases along the radial direction of the axis of the first air inlet block 41. With different apertures, the amount of fluid entering from the radial direction of the flow direction during the process of fluid entering is kept constant at all locations.

[0089] The first air inlet hole 411 is a circular hole, which is convenient for air intake operation.

[0090] The housing further includes a second housing 2 vertically disposed below and in communication with the first housing 1; the second air duct further includes a first flow passage 20 in communication with the first gap 30, and the first flow passage 20 is disposed along the direction in which the second housing 2 is disposed. The first flow passage 20 is disposed in the second housing 2, so that the second air duct can enter from the second housing 2, and then flow through the first flow passage 20 to the first gap 30, and finally merge with the first air duct to be input into the fan, thereby forming a dual-air duct air intake operation mode.

[0091] The outer periphery of the connecting shell 32 is sleeved with a sealing ring 34, and the outer periphery of the sealing ring 34 is in conflict with the inner surface of the first shell 1. The first shell 1, the sealing ring 34, and the connecting shell 32 are arranged in sequence from the outside to the inside. The sealing ring 34 is arranged on the outer periphery of the connecting shell 32, and the sealing ring 34 is in conflict with the inner surface of the first shell 1, so as to avoid the problem of the connecting shell 34 moving during the operation of the fan; at the same time, the sealing ring 34 is arranged at the second air duct facing the air outlet of the fan, so as to avoid the problem of crossflow and improve the operation stability of the hair dryer.

[0092] The sealing ring 34 is arranged at an end away from the air inlet of the fan 3. The sealing ring 34 is arranged only at an end close to the air outlet of the fan.

[0093] The connection housing 32 is provided with a connection groove 325 which is engaged with the sealing ring 34. This makes the connection position of the sealing ring 34 more stable and avoids the problem of shaking and displacement of the sealing ring 34.

[0094] The sealing ring 34 is arranged to overlap with the vertical projection of the first flow passage 20, so as to prevent the vertical air inlet of the first flow passage 20 from directly entering the air outlet of the fan, thereby avoiding the problem of cross-flow.

[0095] In vertical projection, the fan 3 partially overlaps with the first flow passage 20. When the fluid enters through the first flow passage 20, it can directly enter the first gap 30 to complete the heat exchange of the fan and be transmitted to the first air duct for confluence.

[0096] The second housing 2 is provided with a switch module 21 at one side of the first flow passage 20, so as to facilitate the control of the operation mode of the fan.

[0097] In the vertical projection, the switch module 21 and the first gap 30 do not overlap with each other. Only the vertical position where the first flow passage 20 is provided in the second housing 2 corresponds to the first gap 30, and they are partitioned to avoid affecting the air supply effect of the first flow passage 20.

[0098] The switch module 21 includes a first frame 211 disposed in the second housing 2 and connected to the first housing 1, and a switch button 212 disposed in the first frame 211 and extending to the outside. The switch button 212, the first frame 211, and the first flow passage 20 are arranged in sequence. In the vertical projection, the first frame 211 and the first gap 30 do not overlap with each other. Only the vertical position where the first flow passage 20 is provided in the second housing 2 corresponds to the first gap 30, and they are partitioned to avoid affecting the air supply effect of the first flow passage 20.

[0099] A circuit board 22 is fixedly disposed in the first flow passage 20. During the process of conveying fluid in the first flow passage 20, heat dissipation and cooling are performed on the circuit board 22.

[0100] The circuit board 22 is arranged along the setting direction of the first flow passage 20. It is convenient for heat dissipation of the circuit board 22 during the flow of fluid.

[0101] A heat conducting plate 221 in contact with the air flow of the first flow passage 20 is disposed on the circuit board 22. The heat conducting plate 221 is provided, and the heat conducting plate 221 is a copper sheet. During the flow of fluid, contact is made with the copper sheet for heat exchange, thereby improving the heat exchange efficiency.

[0102] The heat conducting plate 221 includes a connection end 2211 connected to the circuit board and a fitting end 2212 connected to the connection end 2211. Both ends of the fitting end 2212 are in contact with the components of the circuit board 22 and the air flow of the second flow passage 20 respectively. The cross-section of the heat conducting plate 221 along the air flow conveying direction is in a "冂" shape, which is convenient for fitting the components of the circuit board 22 to improve the heat exchange effect.

[0103] The circuit board 22 is connected to a cable 23. The cable 23 penetrates through the first flow passage 20 and penetrates through the first housing 1 along one end of the first gap 30 away from the air inlet of the blower 3. It is arranged in the reverse direction to avoid affecting the air flow flowing from the first flow passage 20 to the first gap 30.

[0104] The connecting shell 32 is provided with a through hole 326 for the cable 23 to pass through the space. The through hole 326 is provided on the side of the sealing ring 34 away from the first gap 30 to avoid the problem of crossflow from the fan outlet vertically facing the first flow channel 20. The line connecting the end of the first flow channel 20 has a certain inclination. Even if part of the air flows out through the through hole 326, it is far away from the fan outlet, thereby avoiding the problem of crossflow. At the same time, the cable 23 passes through the through hole 326 to fill the space, which can effectively reduce the amount of airflow passing through.

[0105] In vertical projection, the cable 23 passes through the first housing 1, the sealing ring 34, and the first gap 30, and they do not overlap. The cable 23 passes through the first housing 1, the sealing ring 34, and the first gap 30 in sequence. This prevents the fluid transported by the first flow passage 20 from being directly blown to the fan outlet.

[0106] The cable 23 is disposed on one side of the first frame 211 .

[0107] The second housing 2 includes an outer housing 24 and an inner housing 25 which are sleeved from outside to inside. The switch module is fixedly connected to the inner housing 24. The first flow channel 20 is arranged inside the inner housing 25 and on one side of the light-opening module. The upper end of the outer housing 24 is in conflict with the first housing 1. The first flow channel 20 and the circuit board 22 are both arranged inside the inner housing 25. The switch button 212 passes through the outer housing and extends to the outside; it can effectively prevent the outer housing 24 from rotating in the circumferential direction; the second housing 2 is formed by connecting multiple modules, and the outer housing is sleeved on the inner housing to facilitate assembly during the production process.

[0108] The inner shell 25 and the outer shell 24 are provided with a clamping part at one end away from the first shell 1 to prevent the outer shell 24 from rotating. The clamping part can effectively connect and fix the inner shell 25 and the outer shell 24, prevent the outer shell 24 from coming out axially, and prevent the outer shell 24 from rotating circumferentially.

[0109] The clamping part includes a first connection module that is fixedly connected to the inner shell 25 and limits the circumference of the outer shell 24. The first connection module is provided to connect the inner shell 25 and the outer shell 24 to prevent the two from being separated.

[0110] The first connection module includes a first connection block 261 fixedly connected to the inner shell, and a first limiting groove 262 disposed at the upper end of the first connection block 261;

[0111] The inner surface of the outer shell 24 is provided with a first limiting strip 241 which is engaged in the first limiting groove 262. The first connecting block 261 is fixedly connected to the inner shell 25 by screws. After the inner shell 25 is fixedly connected by the first connecting block 261, the first limiting groove 262 and the first limiting strip 241 are engaged to prevent the outer shell 24 from rotating. Since the first limiting strip 241 and the first limiting groove 262 intersect in the vertical projection direction, the bottom of the first limiting groove 262 blocks the axial movement of the first limiting strip 241, thereby preventing the outer shell 24 from rotating circumferentially and moving axially out of the outer shell 24.

[0112] The first limiting groove 262 and the first limiting strip 241 are arranged in one or more groups. With the axis of the first connection block 261 as the center, the first limiting groove 262 and the first limiting strip 241 are arranged in one or more groups around; multiple groups are arranged to improve the stability of the limit.

[0113] The first connecting block 261 is coaxially provided with a first fitting hole 263 and a first fitting groove 264 in sequence from the inside to the outside, and the first limiting groove 262 is provided on the outer periphery of the first fitting groove 264;

[0114] The inner housing 25 is provided with a first engaging portion 251 engaged with the first engaging hole 263 and a second engaging portion 252 engaged with the first engaging groove 264. The inner housing 25 is provided with multiple engaging positions to improve the connection stability between the inner housing 25 and the first connecting block 261, and to prevent the two from shaking after connection and affecting the connection stability with the outer housing 24.

[0115] The clamping part further includes a second connection block 271 and / or a third connection block 281 connected to the first connection block 261, so that the connection stability of the clamping part to the outer shell 24 is stronger.

[0116] The first connection module also includes a first buckle 265 fixedly disposed at the lower end of the first connection block 261 and connected to the second connection block 271 and / or a second buckle 266 connected to the third connection block 281. The second connection block 271 and the third connection block 281 are arranged to form the air inlet initial end of the second housing 2, and the outer housing 24, the third connection block 281, and the second connection block 271 can be arranged layer by layer, and the multiple layers are surrounded and attached to improve the connection stability.

[0117] The third connection block 281 is fixedly arranged between the first connection block 261 and the second connection block 271. The second connection block 271 and the third connection block 281 are arranged to form the air inlet initial end of the second shell 2, and the outer shell 24, the third connection block 281, and the second connection block 271 can be arranged layer by layer, and the multiple layers are surrounded and attached to improve the connection stability.

[0118] With the axis of the first connection block 271 as the center, one or more first buckles 265 and second buckles 266 are sequentially arranged along the radial direction. Arranging multiple buckles is beneficial to improving the connection stability.

[0119] The second connection block 271 is provided with a first buckle connection hole 272 connected to the first buckle 265; the third connection block 281 is provided with a second buckle connection hole 282 connected to the second buckle 266. The first buckle connection holes 272 and the first buckle 265 are arranged in groups corresponding to one or more groups; the second buckle connection holes 282 and the second buckle 266 are arranged in groups corresponding to one or more groups; the connection by buckle is convenient for assembly, and after connection, it is conducive to the resistance to the axial direction of the outer shell, thereby improving the stability of the connection effect.

[0120] The second connection block 271 is provided with a second fitting groove 273 that fits with the second buckle 266, and the second fitting groove 273 does not overlap with the vertical projection of the first buckle connection hole 272. The connection by buckle is convenient for assembly, and after connection, it is conducive to the axial direction of the outer shell to improve the stability of the connection effect.

[0121] The second connection block 271 is provided with one or more second air inlet holes 274 connected to the first flow passage 20. The second air inlet holes 274 are provided so that the fluid can flow from the second connection block 271 to the first flow passage, thereby forming a vertical flow effect of the fluid.

[0122] The second air inlet holes 274 are coaxially arranged in a plurality of circles around the axis of the second block 271 to increase the air delivery rate.

[0123] The inner shell 25 is provided with a communication port 253 communicating with the first air flow passage 20 and the second air inlet hole 274 , so that the external air flow can flow through the second air inlet hole 274 , the communication port 253 , and the first air flow passage 20 .

[0124] The first engaging portion 251 penetrates the first connecting block 261, the second connecting block 271, and the third connecting block 281 and is connected to the outside so as to connect the circuit board to an external power source;

[0125] In the opposite direction of the air outlet of the fan, the first housing 1 is provided with a heating module and a connecting housing 32 which are mutually restrained and fixed in position, and the outer surface of the connecting housing 32 is restrained with the inner surface of the first housing 1. The multiple components are assembled in a restraining manner, which is convenient for assembly, and after assembly, they are connected in a restraining manner, and the structure is compact, which is conducive to improving the stability of the device connection.

[0126] The first abutment platform 11 is disposed at the end of the first housing 1, that is, the first abutment platform 11 is disposed on one side of the first housing 1 close to the air inlet end of the fan; the heating module comprises a heating body 51 and a sleeve housing 52 fixedly disposed on the outer periphery of the heating body 51, one end of the sleeve housing 52 abuts against the first abutment platform 11, and the other end of the sleeve housing 52 abuts against the connecting housing 32. The abutment platform 11 abuts against the sleeve housing 52 to prevent the heating module from being disengaged from the outside of the first housing 1 as a whole. The heating module is the end of the abutment limit, and has the effect of end limit on the overall abutment.

[0127] The inner surface of the sleeve shell 52 is provided with a first fitting strip 521, and the end of the heating body 51 in the airflow direction is provided with a first fitting opening 511 that fits with the first fitting strip 521;

[0128] The end of the heating body 51 away from the first fitting opening 511 is in conflict with the end of the connecting shell 32. The heating body 51 is connected by fitting with the first fitting strip 521 through the first fitting opening 511. The assembly method of the two is simple. After the assembly is completed, the heating body 51 and the end of the sleeve shell 52 on the same side are in conflict through the connecting shell 32. There are multiple conflict limits, so as to complete the assembly, improve the connection stability, and avoid the problem of structural shaking during use.

[0129] The end of the sleeve shell 52 along the airflow direction is provided with a plurality of ventilation holes 522; the first air duct runs through the first air inlet hole 411, the fan 3, the heating body 51, and the ventilation holes 522. The first air duct is horizontally arranged in the first shell 1, and enters from the first air inlet hole 411 and is discharged from the ventilation holes 522.

[0130] The outer surface of the connecting shell 32 is provided with a conflicting portion 327 that conflicts with the inner surface of the first shell 1. The connecting shell 32 is coaxially limited inside the first shell 1. After the conflicting portion 327 conflicts with the inner surface of the first shell 1, the connecting shell 32 at the initial end is limited inside the first shell 1. After the other end of the connecting shell 32 conflicts with the heating module and the end of the heating module is limited, the internal components of the first shell 1 are assembled. This assembly method performs limited connection by means of conflict, achieving the effect of compact structure and high installation stability.

[0131] Example 2

[0132] This embodiment only describes the differences from the above embodiment, and other technical features are the same. In this embodiment,

[0133] Reference Figures 15 to 20As shown; an air inlet passage 329 is provided at one end of the connecting shell close to the air inlet of the fan 3, and the air inlet passage is communicated with the first gap 30 and the air inlet of the fan 3; along the direction of the connecting shell 32 toward the first air inlet module 4, the air inlet passage 329 is gradually expanded outward.

[0134] The connecting shell 32 is provided with a protection module 6 at one end close to the first air inlet module 4, and the protection module 6 is coaxially arranged between the first air inlet module 4 and the connecting shell 32; the connecting shell 32 is provided with a third interlocking groove 320 at one end close to the first air inlet module 4, and the protection module 6 includes a first mesh body 61 interlocked in the third interlocking groove 320, and a second mesh body 62 interlockingly arranged between the end of the connecting shell 32 and the first air inlet module 4, the first mesh body 61 and the second mesh body 62 are coaxially arranged in sequence along the axial direction of the connecting shell 32, and the second mesh body 62 is arranged between the end of the connecting shell 32 and the first connecting block 42, wherein the first mesh body 61, the second mesh body 62, the first air inlet block 41, and the air inlet of the fan 3 are all connected; specifically, the first mesh body 61 is an air inlet steel mesh, and the second mesh body 62 is an air inlet filter cotton, which can effectively reduce noise and prevent hair from being sucked in.

[0135] The connection between the first connecting block 42 and the connecting shell 32 is changed to a rotational connection; the first connecting block 42 is provided with a rotational card point 423; the connecting shell 32 is provided with a rotational card slot 3291 that cooperates with the rotational card point 423 for connection at one end close to the first connecting block 42; the first connecting block 42 and the connecting shell 32 are connected by rotation, so that the second net body 62 is set up so that the first connecting block 42 and the end of the connecting shell 32 are in contact with each other.

[0136] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0137] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0138] The above is a detailed description of an embodiment of a miniaturized double-inlet hair dryer provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention, and the description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A miniaturized double-inlet hair dryer, comprising a housing and a fan (3) fixedly arranged in the housing, characterized in that: The housing comprises a first housing (1), and the fan (3) is arranged in the first housing (1); the housing is provided with a first air duct and a second air duct which are connected to each other; The first air duct runs through the fan from the air inlet of the fan (3); the second air duct comprises a first gap (30) arranged between the fan (3) and the first housing (1), and the first gap (30) is connected to the air inlet of the fan (3); The housing further comprises a second housing (2) vertically arranged below the first housing (1) and in communication with the second housing (1); the second air duct further comprises a first flow passage (20) in communication with the first gap (30), the first flow passage (20) being arranged along the arrangement direction of the second housing (2); The second housing (2) comprises an outer housing (24) and an inner housing (25) which are sleeved from the outside to the inside, and a clamping portion for preventing the outer housing (24) from rotating is provided at an end of the inner housing (25) and the outer housing (24) away from the first housing (1); The clamping portion is provided with a second air inlet hole (274).

2. The miniaturized double-inlet hair dryer according to claim 1, characterized in that: The fan (3) comprises a fan body (31) and a connecting shell (32) sleeved on the outer periphery of the fan body (31), and a first gap (30) is provided between the connecting shell (32) and the first shell (1).

3. The miniaturized double-inlet hair dryer according to claim 2, characterized in that: The connecting shell (32) is coaxially arranged in the first shell (1), and one or more flow slots (321) are arranged through the connecting shell (32), and the flow slots (321) are connected to the first gap (30).

4. The miniaturized double-inlet hair dryer according to claim 3, characterized in that: A fourth gap (33) is provided between the fan body (31) and the connecting shell (32), and the fourth gap (33) is connected to the circulation slot body (321) and the first gap (30).

5. The miniaturized double-inlet hair dryer according to claim 1, characterized in that: The clamping portion comprises a first connection module which is fixedly connected to the inner shell (25) and limits the circumference of the outer shell (24).

6. The miniaturized double-inlet hair dryer according to claim 5, characterized in that: The first connection module comprises a first connection block (261) fixedly connected to the inner shell, and a first limiting groove (262) arranged at the upper end of the first connection block (261); The outer shell (24) is provided with a first limiting strip (241) embedded in a first limiting groove (262) on its inner surface. The first connecting block (261) is fixedly connected to the inner shell (25) by screws.

7. The miniaturized double-inlet hair dryer according to claim 3, characterized in that: A resistance block (322) is disposed at one end of the connection shell (32), and a resistance end (312) is disposed at the air inlet of the fan body (31) for resisting against the resistance block (322) and thereby limiting the position.

8. The miniaturized double-inlet hair dryer according to claim 3, characterized in that: The connecting shell (32) is connected to a first air inlet module (4) at one end close to the air inlet of the fan, the first air inlet module (4) is partially embedded in the first shell (1), the first air inlet module (4) is coaxially arranged with the fan (3), and the first air inlet module (4) is in communication with the air inlet of the fan (3) and the first gap (30).

9. The miniaturized double-inlet hair dryer according to claim 8, characterized in that: The first air inlet module (4) comprises a first air inlet block (41) and a first connecting block (42) coaxially engaged and fixed to the first air inlet block (41); the first connecting block (42) is coaxially snap-connected to one end of the outer periphery of the connecting shell (32) close to the air inlet of the fan.

10. The miniaturized double-inlet hair dryer according to claim 9, characterized in that: The connecting shell (32) is provided with a protection module (6) at one end close to the first air inlet module (4); The protection module (6) is coaxially arranged between the first air inlet module (4) and the connecting shell (32); a third interlocking groove (320) is arranged at one end of the connecting shell (32) close to the first air inlet module (4); the protection module (6) comprises a first mesh body (61) interlocked in the third interlocking groove (320) and a second mesh body (62) interlockingly arranged between the end of the connecting shell (32) and the first air inlet module (4); The first connection block (42) is provided with a rotation clamping point (423); and one end of the connection shell (32) close to the first connection block (42) is provided with a rotation clamping groove (3291) that cooperates with the rotation clamping point (423) for connection.

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