Double-air-duct air supply mechanism

Abstract

The utility model discloses a double-air-duct air supply mechanism which comprises a shell and a draught fan. The shell comprises a first shell body. The shell is provided with a first air duct and a second air duct; the first air duct penetrates through the fan from the fan air inlet; the shell further comprises a second shell which is vertically arranged below the first shell and is communicated with the first shell; the second air duct further comprises a first circulation passage; a circuit board is fixedly arranged in the first circulation passage; and the circuit board is provided with a heat conducting plate which is in contact with air flow of the first circulation passage. The heat conducting plate is arranged, so that fluid is in contact with the heat conducting plate in the flowing process so as to exchange heat, and the heat exchange efficiency is improved. And when the fluid is conveyed in the first circulation passage, heat dissipation and cooling are carried out on the circuit board. And the second air duct can enter from the second shell, then circulates to the first gap through the first circulation passage, and finally converges with the first air duct to be input into the fan, so that a double-air-duct air inlet operation mode is formed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hair dryer technical field, concretely relates to a double air channel air supply mechanism. BACKGROUND

[0002] Hair dryer is a kind of equipment that the fluid of outside is driven by motor and exports, it is often used in daily hair drying scene etc.;Among them, hair dryer includes shell, fan set in the shell, the air of outside is inhaled by the rotation of fan, and exports in the case of limiting path by air outlet;In prior art, since its air inlet end only carries out air inlet by single path air inlet hole, its air volume cannot meet the demand of large air volume, and the circuit board exists the phenomenon of heating in the operation process of hair dryer, at present, the mode of opening heat dissipation hole cannot meet the heat dissipation demand of circuit board. UTILITY MODEL CONTENTS

[0003] The utility model discloses a double air channel air supply mechanism to solve the above technical problem, set up the heat conduction plate, make fluid flow in the process with heat conduction plate contact and heat exchange, improve the heat exchange efficiency. Make fluid in the process of conveying in the first flow channel, the circuit board is cooled. Set up the first flow channel in the second shell, make the second air channel can enter from the second shell, then pass through the first flow channel and circulate to the first gap, finally, with the first air channel is converged and input in the fan, to form the operation mode of double air channel air inlet.

[0004] To realize the utility model purpose above, the technical scheme that the utility model adopts is as follows:

[0005] A double air channel air supply mechanism, including shell, fan fixedly set in the shell, the shell includes first shell, and the fan is set in the first shell;The shell is provided with first air channel and second air channel that are connected in communication;

[0006] The first air channel is arranged through the fan from the air inlet of the fan;The second air channel includes the first gap arranged between the fan and the first shell, and the first gap is connected in communication with the air inlet of the fan. The first air channel and the second air channel that are connected in communication are arranged in the shell, wherein the second air channel includes the first gap arranged between the fan and the first shell, so that the hair dryer operation has two air channels for air supply, and the fluid is cooled 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 comprises a fan body, a connecting shell sleeved on the periphery of the fan body, and a first gap between the connecting shell and the first shell. The first gap is horizontally arranged. The periphery of the fan body is sleeved with the connecting shell and fixed in the first shell, so that the fixing stability of the fan body is stronger, and the problem of overall rotation of the fan during operation is avoided. The first gap between the connecting shell and the first shell provides a space for the flow of the second air duct, and the fan body is heat-exchanged during the flow of the fluid, so that the fan is cooled, and the heat dissipation performance of the fan is good.

[0008] Preferably, the connecting shell is coaxially arranged in the first shell, and one or more flow-through grooves are arranged through the connecting shell and communicated with the first gap. During the flow of the fluid in the first gap, the fluid can flow into the flow-through groove and contact the fan body due to the through arrangement of the flow-through groove, so as to heat-exchange the fan body and improve the heat-exchange effect of the fan. Meanwhile, the flow direction of the fluid is guided by the flow-through groove.

[0009] Preferably, a fourth gap is arranged between the fan body and the connecting shell, and the fourth gap is communicated with the flow-through groove and the first gap. The fourth gap is arranged to make more fluid flow from the flow-through groove to the space between the fan body and the connecting shell, so that the heat-exchange effect of the fan is better.

[0010] Preferably, one or more abutting points are arranged on the periphery of the fan body and abut against the inner surface of the connecting shell, and the abutting points are arranged in the fourth gap. The abutting points are arranged to provide a fulcrum for the fourth gap between the connecting shell and the fan body, and the fan body is fixedly arranged in the connecting shell to avoid the overall rotation of the fan body in the connecting shell.

[0011] Preferably, the abutting points are semispherical.

[0012] Preferably, an abutting block is arranged at one end of the connecting shell, and an abutting end of the fan body is arranged at the air inlet and abuts against the abutting block to limit the position. The fan is prevented from being separated from the end of the connecting shell to the outside.

[0013] Preferably, a first air inlet module is connected to the end of the connecting shell 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 communicated with the air inlet of the fan and the first gap. The first air inlet module is arranged in the first shell to provide an air inlet module for the first air duct, and the output end of the first air inlet module is communicated with the output end of the first gap.

[0014] Preferably, the first air inlet module comprises a first air inlet block, a first connecting block coaxially embedded and fixed with the first air inlet block, and the first connecting block is coaxially buckled and connected to one end of the connecting shell near the air inlet of the fan. The air inlet block is fixed by the first connecting block, and the first connecting block is connected to the outer periphery of the connecting shell by buckling. This assembly method is simple and reduces the production difficulty.

[0015] Preferably, the connecting shell is provided with a first protrusion at the buckling connection position of the first connecting block, the first protrusion abuts against the inner surface of the first connecting block in the axial direction, and the two sides of the first protrusion are provided with a communication groove in communication with the air inlet of the fan and the first gap. The second air duct can flow through the first gap and the communication groove to the air supply end of the first air supply module, and then flow into the fan together with the first air duct.

[0016] Preferably, the first air inlet block, the first connecting block and the first gap are in communication with each other. In the first air duct, the fluid from the outside enters the air inlet of the fan after passing through the first air inlet block and the first connecting block; in the second air duct, the fluid flows to the air supply end of the first connecting block through the first gap and then enters the air inlet of the fan.

[0017] Preferably, the air inlet end of the first shell is provided with a second protrusion, and the inner surface of the first connecting block is provided with a first embedding groove embedded with the second protrusion. The first shell limits the first connecting block in the circumferential direction, so as to fix the fan connected with the first connecting block and prevent the whole fan from rotating;

[0018] Preferably, the first connecting block is provided with a second embedding groove at the buckling connection position of the connecting shell, and the first protrusion is embedded in the second embedding groove. This prevents the connecting shell from rotating relative to the first shell and the first connecting block in the circumferential direction, 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 in communication with the air inlet of the fan, the first gap and the communication groove, and the first air duct is arranged in the sequence of the first air inlet hole, the air inlet of the fan and the air outlet of the fan. The plurality of first air inlet holes allows the fluid from the outside to flow to the air inlet of the fan through the first air inlet holes.

[0020] Preferably, the first air inlet holes are coaxially arranged around the first air inlet block in multiple turns with the first air inlet block axis as the center. This makes the air supply larger.

[0021] Preferably, along the radial direction of the first air inlet block axis, the diameter of the first air inlet hole gradually increases. Different diameters allow the amount of fluid entering from the radial direction to remain constant at each position during the entering process.

[0022] Preferably, the first air inlet hole is a round hole. Setting it as a round hole facilitates the air inlet operation.

[0023] Preferably, the housing further includes a second housing that is vertically arranged below the first housing and is connected; the second air duct further includes a first flow passage that is connected to the first gap, and the first flow passage is arranged along the 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 through the first flow passage to the first gap, and finally converge with the first air duct and be input into the fan, thus forming a double-air-duct air inlet operation mode.

[0024] Preferably, a switch module is arranged on one side of the first flow passage in the second housing. It is convenient to control the operation mode of the fan.

[0025] Preferably, in the vertical projection, the switch module and the first gap do not overlap with each other. Only the position where the first flow passage is arranged in the second housing corresponds to the first gap vertically, and the partition setting is to avoid affecting the air supply effect of the first flow passage.

[0026] Preferably, the switch module includes a first frame body arranged in the second housing and connected to the first housing, and a switch button arranged in the first frame body and extending to the outside. The switch button, the first frame body, and the first flow passage are arranged in sequence. In the vertical projection, the first frame body and the first gap do not overlap with each other; only the position where the first flow passage is arranged in the second housing corresponds to the first gap vertically, and the partition setting is to avoid affecting the air supply effect of the first flow passage.

[0027] Preferably, a circuit board is fixedly arranged in the first flow passage. When the fluid is transported in the first flow passage, the circuit board is cooled by heat dissipation.

[0028] Preferably, the circuit board is arranged along the direction of the first flow passage. It is convenient to dissipate heat from the circuit board while the fluid flows through.

[0029] Preferably, a heat conducting plate that contacts the air flow in the first flow passage is arranged on the circuit board. The heat conducting plate is provided, and the heat conducting plate is a copper sheet, so that the fluid contacts the copper sheet during the flowing process to exchange heat, thereby improving the heat exchange efficiency. <0oo0061>

[0030] Preferably, the heat conducting plate includes a connection end connected to the circuit board and a fitting end connected to the connection end. The two ends of the fitting end are respectively abutted against the components of the circuit board and the air flow in the second flow passage. The cross-section of the heat conducting plate along the air flow conveying direction is "冂"-shaped, which is convenient for fitting the components of the circuit board to improve the heat exchange effect.

[0031] This application has achieved beneficial technical effects:

[0032] The utility model discloses a heat conduction plate is arranged, and fluid is contacted with heat conduction plate in the process of flowing and exchanges heat to improve the heat exchange efficiency. The fluid is transported in the first flow passage, and the circuit board is cooled. The first flow passage is arranged in the second casing, and the second air duct can enter from the second casing, and then pass through the first flow passage and circulate to the first gap, and finally merge with the first air duct and input into the fan, thereby forming the operation mode of double air duct air inlet. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is the structure schematic diagram of the utility model;

[0034] Figure 2 It is another structure schematic diagram of the utility model;

[0035] Figure 3 It is Figure 2 A-A direction section structure schematic diagram of;

[0036] Figure 4 It is Figure 2 D-D direction section structure schematic diagram of;

[0037] Figure 5 It is Figure 2 E-E direction section structure schematic diagram of;

[0038] Figure 6 It is Figure 1 C-C direction section structure schematic diagram of;

[0039] Figure 7 It is one of the explosion structure schematic diagram of the utility model;

[0040] Figure 8 It is the second of the explosion structure schematic diagram of the utility model;

[0041] Figure 9 It is the third of the explosion structure schematic diagram of the utility model;

[0042] Figure 10 It is Figure 3 Local enlarged structure schematic diagram of. DETAILED DESCRIPTION

[0043] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the specific implementation of the utility model will be explained below by comparing with the drawings. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating creative labor, and other implementation modes can be obtained.

[0044] The technical scheme of the utility model is specifically introduced below.

[0045] With reference to Figures 1 to 10 A double air duct air supply mechanism, comprising a shell, a fan 3 fixedly arranged in the shell, the shell comprising a first shell 1, the fan 3 being arranged in the first shell 1, the shell being provided with a first air duct and a second air duct in communication,

[0046] The first air duct is arranged through the fan from the air inlet of the fan 3, and the second air duct comprises a first gap 30 arranged between the fan 3 and the first shell 1, and the first gap 30 is in communication with the air inlet of the fan 3.

[0047] The fan 3 comprises a fan body 31 and a connecting shell 32 sleeved on the outer periphery of the fan body 31, and the connecting shell 32 is arranged in the first gap 30 between the connecting shell 32 and the first shell 1.

[0048] The connecting shell 32 is coaxially arranged in the first shell 1, and the connecting shell 32 is provided with one or more flow-through grooves 321, and the flow-through grooves 321 are in communication with the first gap 30.

[0049] The fan body 31 and the connecting shell 32 are arranged in the fourth gap 33, and the fourth gap 33 is in communication with the flow-through grooves 321 and the first gap 30.

[0050] The fan body 31 is provided with one or more abutting points 311 on the outer periphery, which abut against the inner surface of the connecting shell 32, and the abutting points 311 are arranged in the fourth gap 33. The abutting points 311 are arranged to provide a fulcrum for the fourth gap 33 between the connecting shell 32 and the fan body 31, and to fix the fan body 31 in the connecting shell 32, so as to prevent the fan body 31 from rotating in the connecting shell. Preferably, a rubber sleeve is provided on the outer periphery of the fan body 31, and the abutting points 311 are arranged on the rubber sleeve. The rubber sleeve serves to reduce vibration and noise.

[0051] The abutting points 311 are semispherical.

[0052] One end of the connecting shell 32 is provided with an abutting block 322, and the fan body 31 is provided with an abutting end 312 at the air inlet, which abuts against the abutting block 322 to limit the position. This prevents the fan from being pulled out of the end of the connecting shell 32 to the outside.

[0053] The connecting shell 32 is connected to the first air inlet module 4 at one end close to the air inlet of the fan 3. The first air inlet module 4 is partially embedded in the first shell 1, and the first air inlet module 4 is coaxially arranged with the fan 3. The first air inlet module 4 is in communication with the air inlet of the fan 3 and the first gap 30. The first air inlet module 4 is embedded in the first shell 1 to provide an air inlet module for the first air duct. The first air inlet module is in communication with the first gap 30, so that the output end of the first air inlet module is in communication with the output end of the first gap 30.

[0054] The first air inlet module 4 includes a first air inlet block 41 and a first connecting block 42 for coaxially embedding and fixing the first air inlet block 41. The first connecting block 42 is coaxially buckled to the outer periphery of the connecting shell 32 at one end close to the air inlet of the fan 3. The first air inlet block 41 is fixed by the first connecting block 42, and the first connecting block 42 is connected to the outer periphery of the connecting shell 32 by buckling. This assembly method is simple and reduces the production difficulty.

[0055] The connecting shell 32 is provided with a first protrusion 323 at the buckling connection of the first connecting block 42. The first protrusion 323 abuts against the inner surface of the first connecting block 42 in the axial direction. The first protrusion 323 is provided with a communication groove 324 on both sides, which is in communication with the air inlet of the fan 3 and the first gap 30. The second air duct can flow through the first gap 30 and the communication groove 324 to the air outlet end of the first air outlet module, so as to merge with the first air duct and flow into the fan.

[0056] The first air inlet block 41, the first connecting block 42 and the first gap 30 are in communication with each other. In the first air duct, the fluid from the outside enters the air inlet of the fan through the first air inlet block 41 and the first connecting block 42; in the second air duct, the fluid flows to the air outlet end of the first connecting block 42 through the first gap 30 and then enters the air inlet of the fan.

[0057] The air inlet end of the first shell 1 is provided with a second protrusion 11, and the inner surface of the first connecting block 42 is provided with a first fitting groove 421 fitted with the second protrusion 11. The first shell limits the first connecting block in the circumferential direction, thereby fixing the fan connected with the first connecting block and preventing the rotation of the fan as a whole.

[0058] The first connecting block 42 is provided with a second fitting groove 422 at the buckle connection with the connecting shell 32, and the first protrusion 323 is fitted in the second fitting groove 422. This prevents the connecting shell from rotating relative to the first shell and the first connecting block in the circumferential direction, thereby improving the stability of the fan operation.

[0059] The first air inlet block 41 is provided with a plurality of first air inlet holes 411. The first air inlet holes 411 are in communication with the air inlet of the fan 3, the first gap 30 and the communication groove 324, and the first air duct is arranged in the order of the first air inlet holes 411, the air inlet of the fan and the air outlet of the fan. The plurality of first air inlet holes 411 allows the fluid from the outside to flow to the air inlet of the fan through the first air inlet holes 411.

[0060] The first air inlet holes 411 are coaxially arranged around the first air inlet block 41 in multiple turns. This allows for a larger air supply.

[0061] The diameter of the first air inlet holes 411 gradually increases along the radial direction of the first air inlet block 41. The different diameters allow the amount of fluid entering from the radial direction to remain constant at each location.

[0062] The first air inlet holes 411 are circular holes. The circular holes facilitate air inlet operation.

[0063] The shell further comprises a second shell 2 vertically arranged below the first shell 1 and in communication with the first shell 1; the second air duct further comprises a first flow passage 20 in communication with the first gap 30, and the first flow passage 20 is arranged along the arrangement direction of the second shell 2. The first flow passage 20 is arranged in the second shell 2, so that the second air duct can enter from the second shell 2, then flow through the first flow passage 20 to the first gap 30, and finally combine with the first air duct to enter the fan, thereby forming a double-air-duct air inlet operation mode.

[0064] The second shell 2 is provided with a switch module 21 on one side of the first flow passage 20. This facilitates the control of the operation mode of the fan.

[0065] Projected vertically, the switch module 21 and the first gap 30 do not overlap. This ensures that only the first flow channel 20 in the second housing 2 is vertically aligned with the first gap 30, creating a partitioned layout to avoid affecting the airflow effect of the first flow channel 20.

[0066] The switch module 21 includes a first frame 211 disposed within the second housing 2 and connected to the first housing 1, and a switch button 212 disposed within the first frame 211 and extending to the outside. The switch button 212, the first frame 211, and the first flow channel 20 are arranged sequentially. Projected vertically, the first frame 211 and the first gap 30 do not overlap; thus, only the location of the first flow channel 20 in the second housing 2 vertically corresponds to the first gap 30, and the modules are arranged in sections to avoid affecting the air supply effect of the first flow channel 20.

[0067] A circuit board 22 is fixedly installed inside the first flow channel 20. During the process of fluid being transported in the first flow channel 20, the circuit board 22 is cooled by heat dissipation.

[0068] The circuit board 22 is arranged along the direction of the first flow channel 20. This facilitates heat dissipation from the circuit board 22 during fluid flow.

[0069] A heat-conducting plate 221 is provided on the circuit board 22 to contact the airflow through the first flow channel 20. The heat-conducting plate 221 is made of copper sheet, so that the fluid comes into contact with the copper sheet during the flow process to exchange heat and improve the heat exchange efficiency.

[0070] The heat-conducting plate 221 includes a connecting end 2211 connected to the circuit board and a bonding end 2212 connected to the connecting end 2211. The two ends of the bonding end 2212 respectively abut against the components of the circuit board 22 and the airflow of the second flow channel 20. The cross-section of the heat-conducting plate 221 along the airflow direction is "U" shaped, which facilitates bonding with the components of the circuit board 22 and thus improves the heat exchange effect.

[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0072] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all fall within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

[0073] The above describes in detail the embodiment of the double-air-duct air supply mechanism provided by the present application. The principle and implementation manner of the present application are described by applying specific examples, and the above embodiment is only used to help understand the core idea of the present application. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made to the present application without departing from the principle of the present application, and these modifications and improvements also fall within the protection scope of the claims of the present application.

Claims

1. A double duct air supply mechanism comprising a housing, a fan (3) fixedly provided in the housing, characterized in that, The shell comprises a first shell (1), and the fan (3) is arranged in the first shell (1); the shell is provided with a first air duct and a second air duct in communication; The first air duct is arranged from the air inlet of the fan (3) to the fan; the second air duct comprises a first gap (30) arranged between the fan (3) and the first shell (1), and the first gap (30) is in communication with the air inlet of the fan (3); The shell further comprises a second shell (2) arranged vertically below the first shell (1) and in communication; the second air duct further comprises a first flow channel (20) in communication with the first gap (30), and the first flow channel (20) is arranged along the arrangement direction of the second shell (2); The circuit board (22) is fixedly arranged in the first flow channel (20); The circuit board (22) is provided with a heat-conducting plate (221) in contact with the airflow of the first flow channel (20).

2. The dual duct air supply according to claim 1, wherein, The fan (3) comprises a fan body (31) and a connecting shell (32) sleeved on the outer periphery of the fan body (31), and the first gap (30) is arranged between the connecting shell (32) and the first shell (1).

3. The dual duct air distribution mechanism of claim 2, wherein, The connecting shell (32) is connected with 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).

4. The dual duct air supply according to claim 3, wherein, The first air inlet module (4) comprises a first air inlet block (41) and a first connecting block (42) coaxially embedded and fixed with the first air inlet block (41), and 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.

5. The dual duct air supply according to claim 4, wherein, The first air inlet block (41) is provided with a plurality of first air inlet holes (411).

6. The dual duct air supply according to claim 5, wherein, The first air inlet holes (411) are coaxially arranged in multiple circles with the first air inlet block (41) as the center.

7. The dual duct air supply according to claim 5, wherein, Along the radial direction of the first air inlet block (41) axis, the hole diameter of the first air inlet hole (411) gradually increases.

8. The dual duct air supply according to claim 5, wherein, The first air inlet hole (411) is a circular hole.

9. The dual duct air supply according to claim 1, wherein, The circuit board (22) is arranged along the arrangement direction of the first flow channel (20).

10. The dual duct air supply according to claim 1, wherein, The heat-conducting plate (221) comprises a connecting end (2211) connected with the circuit board, and a fitting end (2212) connected with the connecting end (2211), and the fitting end (2212) is respectively abutted with the components of the circuit board (22) and the airflow of the second flow channel (20).

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