CN112780608B - Effectual fan of air current diffusion - Google Patents
Effectual fan of air current diffusion Download PDFInfo
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- CN112780608B CN112780608B CN202110006402.2A CN202110006402A CN112780608B CN 112780608 B CN112780608 B CN 112780608B CN 202110006402 A CN202110006402 A CN 202110006402A CN 112780608 B CN112780608 B CN 112780608B
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- air outlet
- fan
- air
- volute
- guide surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a fan with a good airflow diffusion effect. The existing fan has the problem of uneven air flow diffusion. The invention comprises a shell, a volute, an air outlet channel and an air inlet channel, wherein a fan is arranged in the volute, an air inlet is formed in the front end part of the air outlet channel, an air outlet is formed in the bottom part of the air outlet channel, the axis of the air outlet channel is arranged along the tangential direction of the periphery of the volute, a multi-stage guide plate is arranged on the top surface of the air outlet channel, the corner part of the multi-stage guide plate, close to the front end of the fan, forms a front end guide surface through bending, the front end guide surface inclines along the tangential direction of the periphery of the fan, and inner layer air flow flowing through the air outlet and close to the fan is abutted to and turned to the front end guide surface, then is discharged downwards through the air outlet and is staggered and avoided with outer layer air flow flowing through the air outlet and far away from the fan. The front end guide surface is arranged at the corner part of the front end part of the multistage guide plate facing the fan, so that the multistage guide plate can be staggered and avoided with the outer layer airflow along the outer side of the air outlet, the airflow diffusion range is effectively enlarged, the airflow diffusion uniformity is further ensured, and the use experience is improved.
Description
Technical Field
The invention relates to the field of ventilation, in particular to a fan.
Background
The existing fan comprises a casing, an air outlet channel and an air inlet channel, wherein the casing is internally provided with a volute, the air outlet channel and the air inlet channel are arranged in the casing, a fan is arranged in the volute, external air is extracted from the middle of the volute through the air inlet channel and is exhausted outside through the air outlet channel under the driving of the fan, the front end part of the air outlet channel is provided with an air inlet communicated with the volute, and the bottom part of the air outlet channel is provided with an air outlet communicated with an external space. When using, the pivoted fan passes through inlet air channel extraction outside air and arranges outward through the air-out passageway, because the roof of air-out passageway includes that the polylith is rectangular guide face, and the linking line between adjacent guide face is parallel arrangement each other, the top layer air current that is located the air outlet top layer turns to the back downflow and with be located the air outlet bottom along the bottom air current that the air-out passageway axis flows mixing in crossing with corresponding guide face contact, both can lead to top layer air current and bottom air current to produce the sinuous flow because of the striking that crosses each other, make the air current can influence the outflow speed because of kinetic energy loss, and then reduced the air current diffusion scope, influence and use experience, still can lead to the air current flow inhomogeneous in each region of air outlet, influence the air current diffusion homogeneity.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides the fan with good airflow diffusion effect, the front end guide surface which is biased towards the fan is arranged at the front end part of the multistage guide plate, so that the vertically flowing inner airflow and the horizontally flowing outer airflow are staggered and avoided, the airflow speed is improved, the uniform air output of each area of the air outlet is ensured, and the use experience is improved.
The invention is realized by the following modes: a fan with good airflow diffusion effect comprises a shell with a volute inside, an air outlet channel and an air inlet channel arranged in the shell, a fan is arranged in the volute, the middle part of the volute extracts outside air through the air inlet channel and is driven by the fan to be discharged through the air outlet channel, the front end part of the air outlet channel is provided with an air inlet communicated with the volute, the bottom part of the air outlet channel is provided with an air outlet communicated with the external space, the axis of the air outlet channel is arranged along the tangential direction of the periphery of the volute, the top surface of the air outlet channel is provided with a multi-stage guide plate, the front end corner part of the multistage guide plate, which is close to the fan, is bent to form a front end guide surface, the front end guide surface inclines along the tangential direction of the periphery of the fan, and the inner layer airflow flowing through the air outlet and close to the fan is collided with the front end guide surface, turns to turn, then is discharged downwards through the air outlet and is dislocated and avoided with the outer layer airflow flowing through the air outlet and far away from the fan. Set up the front end guide face towards the turning part of fan at the front end portion of multistage guide board, make along the inboard inlayer air current of air outlet can contradict with the front end guide face and turn to and arrange outward through the anterior segment of air outlet, can avoid with the outer air current dislocation along the air outlet outside, prevent that the condition that the velocity of flow reduces takes place because of striking each other between two strands of air currents, effectively increase air current diffusion scope, still ensure that inlayer air current and outer air current can be respectively through the anterior segment and the back end of air outlet are arranged outward, ensure that each regional air output of air outlet is balanced, and then ensure air current diffusion homogeneity, promote to use and experience.
Preferably, the front end guide plate has a right triangle shape, and the front end edge and the side edge of the front end portion of the multistage guide plate close to the blower form two right-angled edges of the front end guide surface, so that the right-angled portion of the front end guide surface is in close contact with the top wall of the volute. The front end side bending of multistage guide board forms the front end guide face, can play the conflict to the inlayer air current and turn to the effect, still ensures that the air-out passageway back end has stable wind regime through reducing the influence to the inlayer air current, ensures that each district section of air outlet evenly goes out the air.
Preferably, the air inlet of the air outlet channel communicated with the volute comprises a circumferential air inlet area arranged on the front end surface of the air outlet channel and a radial air inlet area arranged at the front end part of the air outlet channel and facing the fan side. The circumferential air inlet area can effectively receive air flow flowing along the side wall of the volute, the radial air inlet area can effectively receive air flow formed by rotation of the fan, resistance of air flow transferring between the volute and the air outlet channel is reduced by increasing the size of the air inlet, and then the air flow diffusion effect is improved by ensuring the air flow speed.
Preferably, the top edge of the circumferential air inlet area extends upwards to form a circumferential connecting plate tightly attached to the top wall of the volute, the bottom edge of the circumferential connecting plate is connected with the top edge of the circumferential air inlet area, and the top edge of the circumferential connecting plate is connected with the top wall of the volute, so that the connection sealing performance between the volute and the air outlet channel is ensured, the airflow is guided, and the airflow smoothly flows into the air outlet channel.
Preferably, the top edge of the radial air inlet area extends upwards to form a radial connecting plate tightly attached to the top wall of the volute, the bottom edge of the radial connecting plate is connected with the top edge of the radial air inlet area, and the top edge of the radial connecting plate is connected with the top wall of the volute, so that the connection sealing performance between the volute and the air outlet channel is ensured, the airflow is guided, and the airflow is ensured to flow into the air outlet channel smoothly.
Preferably, the front end edge of multistage guide board is followed the radial line setting of fan plays the positioning action to the air-out passageway, ensures that the regional and the regional homoenergetic of radial air-out of circumference air-out effectively accepts the air current.
Preferably, the vertical projection of the multi-stage guide plate completely falls into the air outlet. Ensure that the air outlet size satisfies processing multistage for the guide board mould pass through for the mould can enclose to close the die cavity that forms processing air-out passageway usefulness, and then make the air-out passageway can with the integrative injection moulding of inferior valve, both reduce the processing cost through the part quantity that reduces the processing assembly, still convenient assembly promotes assembly efficiency, ensures the air current velocity of flow again, promotes to use and experiences.
Preferably, the guide plate includes a front end guide surface, a middle guide surface, and a rear end guide surface, which are sequentially arranged along a length direction thereof, and an included angle between the front end guide surface, the middle guide surface, and the rear end guide surface and a horizontal plane is gradually decreased. The airflow steering is finely controlled by increasing the number of the guide surfaces, so that the sections of the air outlet are ensured to have balanced airflow, and the airflow is ensured to be smoothly steered step by arranging a smooth front end guide surface, a smooth middle section guide surface and a smooth rear end guide surface.
Preferably, the included angle between the front end guide surface and the horizontal plane is A, and A is more than or equal to 27 degrees and less than or equal to 45 degrees; or the included angle between the middle section guide surface and the horizontal plane is B, and B is more than or equal to 15 degrees and less than 27 degrees; or the included angle between the rear end guide surface and the horizontal plane is C, and C is more than or equal to 5 degrees and less than 15 degrees. The effect of turning the air flow is related to the angle of inclination of the guide surface, so that the air flow in each area of the outlet is ensured to be balanced by setting the parameter A, B, C to be successively smaller. When parameter A, B, C surpasss and corresponds the upper limit, can lead to the excessive kinetic energy that loses of air current because of the guide face is too inclined, influence the air current and blow the distance, when parameter A, B, C is less than corresponding lower limit, then can influence the air current efficiency of turning to because of the guide face is too gentle, lead to the air current can concentrate to flow to the air outlet rear end region and arrange outward, influence the homogeneity of airing exhaust.
Preferably, the side wall of the volute is spiral and is arranged in a diameter expanding mode along the circumferential direction by taking the axis of the fan as the center, the side wall of the volute comprises a large-diameter end edge and a small-diameter end edge which are respectively arranged at two ends, and the air inlet is formed between the large-diameter end edge and the small-diameter end edge of the volute. The spiral volute has the functions of gathering and discharging airflow outwards, and external air extracted by the fan can be effectively accelerated and directly input into the air outlet channel along the tangential direction. The lateral wall that the diameter grow gradually can turn into the radial effort of air current into circumference effort, and then makes things convenient for the air current to arrange outward through the air-out passageway after accelerating along spiral case circumference.
Preferably, the lower port of the air outlet is provided with an air guide fence, the air guide fence comprises an annular support and an air guide plate vertically arranged in the middle of the support, and the air guide plate is arranged at equal intervals along the length direction of the air outlet. The air guide fence can correct the direction of the air flow passing through the air outlet, ensures that the air flows flowing out of each area of the air outlet can be parallel to each other, and improves the air flow diffusion effect by reducing interference.
Preferably, the shell comprises an upper shell and a lower shell, the upper shell and the lower shell both comprise a base plate and a vertical plate arranged on the base plate, and the upper shell and the lower shell are superposed and fixedly connected through a fastener. The upper shell and the lower shell are independently processed, so that the processing is convenient, and the matching is convenient. When the device is installed, the superposed upper shell and lower shell are fixedly connected through a fastener.
The invention has the beneficial effects that: set up the front end guide face towards the turning part of fan at the front end portion of multistage guide board, make along the inboard inlayer air current of air outlet can contradict with the front end guide face and turn to and arrange outward through the anterior segment of air outlet, can avoid with the outer air current dislocation along the air outlet outside, prevent that the condition that the velocity of flow reduces takes place because of striking each other between two strands of air currents, effectively increase air current diffusion scope, still ensure that inlayer air current and outer air current can be respectively through the anterior segment and the back end of air outlet are arranged outward, ensure that each regional air output of air outlet is balanced, and then ensure air current diffusion homogeneity, promote to use and experience.
Drawings
FIG. 1 is a schematic cross-sectional view of the blower;
FIG. 2 is a schematic structural view of the blower;
FIG. 3 is a structural view of the lower case;
FIG. 4 is a schematic view of the upper housing shown;
FIG. 5 is a sectional view schematically illustrating the lower case;
fig. 6 is a schematic structural view of the wind guide fence;
in the figure: 1. the air guide plate comprises a shell, 2, a volute, 3, an air outlet channel, 4, an air inlet channel, 5, a fan, 6, a multi-stage guide plate, 7, a front end guide surface, 8, a circumferential air inlet area, 9, a radial air inlet area, 10, a circumferential connecting plate, 11, a radial connecting plate, 12, a middle section guide surface, 13, a rear end guide surface, 14, an air guide fence, 15, a support, 16, an air guide plate, 17, an upper shell, 18, a lower shell, 19, a vertical plate, 20 and a base plate.
Detailed Description
The essential features of the invention will be further described in conjunction with the drawings and the detailed description of the invention.
As shown in fig. 1 and 2, a blower with good airflow diffusion effect is composed of a casing 1 with a volute 2 therein, an air outlet channel 3 and an air inlet channel 4 arranged in the casing 1, a fan 5 is arranged in the volute 2, external air is extracted from the middle of the volute 2 through the air inlet channel 4 and is exhausted out through the air outlet channel 3 under the drive of the fan 5, an air inlet communicated with the volute 2 is arranged at the front end of the air outlet channel 3, an air outlet communicated with an external space is arranged at the bottom of the air outlet channel, the axis of the air outlet channel 3 is arranged along the tangential direction of the periphery of the volute 2, a multi-stage guide plate 6 is arranged on the top surface of the air outlet channel 3, the multi-stage guide plate 6 forms a front end guide surface 7 by bending near the front end corner of the fan 5, the front end guide surface 7 is inclined along the tangential direction of the periphery of the fan 5, inner layer airflow flowing through the air outlet and near the fan 5 turns to abut against the front end 7 and is exhausted out through the air outlet, and is staggered and avoided with the outer layer airflow which flows through the air outlet and is far away from the fan 5. Front end sets up front end guide face 7 towards fan 5's turning part at multistage guide 6 front end portion, make along the inboard inlayer air current of air outlet can contradict with front end guide face 7 and turn to and arrange outward through the anterior segment of air outlet, can avoid with the outer air current dislocation along the air outlet outside, prevent the condition that the velocity of flow reduces because of striking each other takes place between two air currents, effectively increase air current diffusion scope, still ensure that inlayer air current and outer air current can be respectively through the anterior segment and the back end of air outlet outward, ensure that each regional air output of air outlet is balanced, and then ensure air current diffusion homogeneity, promote to use and experience.
In this embodiment, the multistage guide plate 6 is long and is disposed along the length direction of the air outlet. The front end side portion of the multistage guide plate 6 is bent to form a front end guide surface 7 inclined toward the fan 5 (as shown in fig. 5). When the spiral case is used, firstly, the rotating fan 5 extracts the external space through the air inlet channel 4, air is radially thrown out by the fan 5 and then collides with the side wall of the spiral case 2 and turns to flow along the circumferential direction of the spiral case 2, and the circumferential flowing air flow is fully distributed in the periphery of the spiral case 2 due to the large air flow; then, when the air current flows into the air inlet, the air current is divided into an inner air current and an outer air current which concentrically and rotationally flow due to the distance between the air current and the axis of the fan 5, when the inner air current flows through the air inlet, the inner air current contacts with the front end guide surface 7 and turns, so that the inner air current downwards passes through the front section area of the air outlet and is discharged outwards, meanwhile, when the outer air current flows through the air outlet, the outer air current horizontally moves along the axis direction of the air outlet channel 3 due to the small contact area with the front end guide surface 7, at the moment, the inner air current downwards flows along the inner side wall of the air outlet channel 3 close to the fan 5, the outer air current can horizontally flow along the outer side wall of the air outlet channel 3 far away from the fan 5 under the action of the self centrifugal force, the inner air current and the outer air current with different flow directions are ensured not to interfere with each other, the kinetic energy loss is effectively prevented, the diffusion range is improved by maintaining the flow velocity of each air current, and the inner air current and the outer air current can be respectively discharged through the front section and the rear section of the air outlet, the air flow diffusion uniformity is improved by improving the air outlet balance of each region of the air outlet, and the use experience is improved.
In actual operation, the front end guide surface 7 is inclined in a tangential direction to the periphery of the fan 5. Specifically, the tangent line is matched and tangent with the periphery of the fan 5 and passes through the corner of the front end side part of the multistage guide plate 6, and meanwhile, the connecting line of the front end guide surface 7 and the middle section guide surface 12 and the tangent line are arranged perpendicular to each other, so that the front end side part of the multistage guide plate 6 can be bent to form the front end guide surface 7 inclined towards the tangential direction of the periphery of the fan 5. The parameter A refers to the included angle between the tangent and the horizontal plane.
In practical operation, the front end guide surface 7 is in a right triangle shape, and the front end edge of the multistage guide plate 6 and the side edge of the front end part close to the fan form two right-angled edges of the front end guide surface 7, so that the right-angled part of the front end guide surface 7 is tightly attached to the top wall of the volute casing 2. The front end guide surface 7 in a right-angled triangle shape is arranged to ensure that a linear connection line is arranged between the front end guide surface 7 and the middle guide surface 12, so that the connection smoothness is effectively improved, and the wind resistance is reduced.
In actual operation, the axis of the air outlet channel 3 is arranged along the tangential direction of the periphery of the volute 2, and the air outlet channel 3 is arranged in the tangential direction of the volute 2, so that the wind resistance of the airflow in the volute 2 flowing into the air outlet channel 3 can be effectively reduced by reducing airflow steering, the size of the volute 2 can be increased by effectively utilizing the width of the shell 1, the airflow flow rate is further improved by increasing the size of the fan 5, the airflow is effectively conveyed and diffused, and the use experience is improved. The axis of the air outlet channel 3 and the periphery of the volute 2 are arranged tangentially, and the tangent point is arranged at the large-diameter end edge of the volute 2, so that the air flow is ensured to be discharged outside through the air outlet channel 3 after the air flow is effectively accelerated.
In actual operation, the side wall of the volute 2 is spiral and is expanded in diameter along the circumferential direction by taking the axis of the fan 5 as the center, the side wall of the volute 2 comprises a large-diameter end edge and a small-diameter end edge which are respectively arranged at two ends, and the air inlet is formed between the large-diameter end edge and the small-diameter end edge of the volute 2. Each section of the side wall of the volute 2 is in a gradual expanding shape, so that the end edges of the two ends of the side wall of the volute 2 are intersected in the same radial plane, an opening communicated with the air inlet of the air outlet channel 3 is formed between the two end edges of the side wall of the volute 2, the air flow in the volute 2 is ensured to flow along the side wall and then input into the air outlet channel 3 along the axis of the air inlet, and the air flow is further ensured to flow along the axis of the air outlet channel 3 and be uniformly discharged.
In actual operation, the air inlet of the air outlet channel 3 communicated with the volute 2 comprises a circumferential air inlet area 8 arranged on the front end face of the air outlet channel 3 and a radial air inlet area 9 arranged at the front end of the air outlet channel 3 and facing the fan 5. The circumferential air inlet area 8 is used for receiving airflow flowing along the side wall of the volute 2, the radial air inlet area 9 is used for receiving airflow which is thrown out by the fan 5 and flows to the air inlet along the radial direction, the received airflow flow is increased by increasing the area and the orientation of the air inlet, and the airflow conveying efficiency is further effectively improved. The big-diameter end and the small-diameter end of the side wall of the volute 2 are converged in the same radial surface through circumferential extension, so that a reserved space which can be communicated with the air outlet channel 3 exists between the big-diameter end and the small-diameter end due to the fact that a radius difference exists between the big-diameter end and the small-diameter end, and air flow is guaranteed to flow into the air outlet channel 3 from the small-diameter end to the big-diameter end through the air inlet. The rotating direction of the fan 5 is consistent with the direction that the radius of the volute 2 is gradually increased, and the air flow can be ensured to flow into the air outlet channel 3 along a preset path.
In actual operation, the circumferential air intake area 8 and the radial air intake area 9 are communicated with each other and are arranged at the same height as the volute 2. The circumferential air inlet area 8 and the radial air inlet area 9 are spliced to form an air inlet with an L-shaped vertical section, the resistance to the air flow is reduced by increasing the size of the air inlet, the height of the air inlet is the same as that of the volute 2, so that the top wall and the bottom wall of the volute 2 can be smoothly connected with the top edge and the bottom edge of the air inlet, the wind resistance is effectively reduced, the air flow rate is improved,
preferably, the front end edge of the multistage guide plate 6 is provided along the radial line of the fan 5. Specifically, the projection of the rotating shaft of the fan 5 along the direction perpendicular to the axis of the air outlet channel 3 falls into the radial air inlet area 9. The radial air inlet region 9 is disposed toward the rotation axis of the fan 5, so that the air flow radially thrown out by the fan 5 can be effectively received by the radial air inlet region 9.
In practical operation, the top edge of the circumferential air inlet area 8 extends upwards to form a circumferential connecting plate 10 tightly attached to the top wall of the volute 2, and the top edge of the radial air inlet area 9 extends upwards to form a radial connecting plate 11 tightly attached to the top wall of the volute 2. The resistance of the airflow passing through the circumferential connection joint plates 10 and the radial connection joint plates 11 is reduced, and therefore the loss of kinetic energy of the airflow is reduced. The circumferential connection plate 10 is connected with the front end guide surface 7 through a round angle, and the radial connection plate 11 is connected with the front end guide surface 7 through a round angle, so that the air flow resistance is effectively reduced, and the air flow speed is effectively maintained.
In practical operation, the housing 1 includes an upper shell 17 and a lower shell 18 (as shown in fig. 3 and 4), the upper shell 17 and the lower shell 18 each include a base plate 20 and a vertical plate 19 disposed on the base plate 20, and the upper shell 17 and the lower shell 18 are stacked and fixed by a fastener. In order to facilitate the formation of the lower shell 18 by an integral injection molding processing mode, the vertical projection of the inner cavity of the air outlet channel 3 completely falls into the air outlet, so that the turned air flow can flow downwards along the side wall of the air outlet channel 3 and is discharged outwards after passing through the air outlet. When the lower shell 18 is processed by injection molding, the mold passes through the air outlet and is positioned at a preset station, so that the raw material flows along the mold cavity and is cooled to form the air outlet channel 3. When machined, the mold for injection molding lower shell 18 includes upper and lower dies that are vertically stacked and form a mold cavity contoured to match lower shell 18. Specifically, the lower mould top surface is equipped with the uplift portion that upwards extends, it is equipped with the depressed part that upwards warp to go up the mould bottom surface, during the compound die, the uplift portion is unsettled to plant in the depressed part and form profile and 3 lateral walls of air-out passageway, the die cavity that roof and end wall match, the die sinking operation is carried out to raw materials input die cavity after cooling, the uplift portion breaks away from the depressed part and the cavity that forms is 3 inner chambers of air-out passageway promptly, the inner chamber bottom breaks away from the uncovered of formation because of the uplift portion and then forms the air outlet, ensure that air-out passageway 3 can and 18 integrative injection moulding of inferior valve, convenient processing, the processing cost is both reduced, still convenient assembly, effectively promote air-out passageway 3's leakproofness again.
In actual operation, the lower casing 18 includes a flat bottom plate and an air outlet channel 3 formed by upward sinking of the side portion of the bottom plate, and the air outlet is formed in a region of the bottom plate vertically corresponding to the air outlet channel 3. The air outlet sets up under air-out passageway 3, conveniently provides the plug passageway for the uplift when processing in injection moulding. Because the vertical projection of the raised part completely falls into the vertical projection of the recessed part, a wall surface with the same thickness of the air outlet channel 3 can be enclosed between the raised part and the recessed part. The roof of air-out passageway 3 forms multistage guide board 6, multistage guide board 6's vertical projection is complete to fall into in the air outlet, the distance between the apical margin of 3 both sides lateral walls of air-out passageway is not more than the width of air outlet, the distance between the both ends reason of air-out passageway 3 is not more than the length of air outlet ensures that the uplift can pass through the air outlet smoothly and encloses with the depressed part and close the die cavity that forms processing air-out passageway 3 roof, lateral wall and end wall usefulness. The top surface of the bottom plate extends upwards to form a vertical plate 19, the upper shell 17 comprises a flat top plate, and after the upper shell is installed in place, the top edge of the vertical plate 19 tightly abuts against the bottom surface of the top plate and encloses to form the volute 2. In addition, the upper shell 17 is also formed by integral injection molding, the processing cost is reduced by reducing the number of parts, the number of gaps is effectively reduced, and the sealing performance of the assembled volute 2 is improved. The vertical plate 19 and the bottom plate are integrally formed by injection molding and are vertical to each other, so that the mold opening after injection molding is convenient.
In actual operation, the top wall of the air outlet channel 3 is provided with a vertically through mounting hole, the bottom surface of the upper shell 17 is provided with a stud, after the upper shell is mounted in place, the lower shell 18 is screwed and locked with a screw hole through a fastener penetrating through the mounting hole, and the lower shell 18 is fixedly connected with the upper shell 17 in an overlapping mode. Specifically, the mounting hole is a stepped hole with a large lower part and a small upper part, the stepped surface is an annular inclined surface, the fastener can conveniently slide towards the middle part and pass through the smooth mounting hole, and after the fastener is mounted in place, the tail end of the fastener is hidden in the mounting hole.
In practice, the guide plate comprises a front guide surface 7, a middle guide surface 12 and a rear guide surface 13 arranged in sequence along the length direction of the guide plate, and the included angles between the front guide surface 7, the middle guide surface 12 and the rear guide surface 13 and the horizontal plane are gradually reduced. The front end guide surface 7, the middle guide surface 12 and the rear end guide surface 13 are arranged in a grading mode to divide and turn the airflow in batches, so that the airflow can be sequentially turned along the axial direction of the air inlet and discharged outwards, and the air outlet is ensured to uniformly receive the airflow along the way. The front end guide surface 7 and the rear end guide surface 13 are connected by a middle guide surface 12. The front end guide surface 7, the middle guide surface 12 and the rear end guide surface 13 have a height difference therebetween, so that the three can perform steering operation for different levels of airflow, and further uniformly divide the airflow.
In actual operation, an included angle between the front end guide surface 7 and a horizontal plane is A, A is larger than or equal to 27 degrees and smaller than or equal to 45 degrees, and in a preferred scheme, A =30 degrees; an included angle between the middle guide surface 12 and the horizontal plane is B, B is more than or equal to 15 degrees and less than 27 degrees, and B =20 degrees is adopted in the preferable scheme; the included angle between the rear end guide surface 13 and the horizontal plane is C, C is more than or equal to 5 degrees and less than 15 degrees, and C =8 degrees is optimized. The airflow is evenly distributed by setting reasonable parameters A, B, C.
In actual operation, the top wall of the air outlet channel 3 forms the multi-stage guide plate 6. The air outlet is long strip-shaped, and the air outlet is followed air intake axis direction sets up, promotes the air-out coverage area through increasing the air outlet size, and then effectively promotes the air current diffusion effect.
In actual operation, an air guide fence 14 (as shown in fig. 6) is arranged at the lower port of the air outlet, the air guide fence 14 includes an annular support 15 and an air guide plate 16 vertically arranged in the middle of the support 15, and the air guide plate 16 is equidistantly arranged along the length direction of the air outlet. The guide grid is arranged at the air outlet and plays a role in fine adjustment and correction of the flow direction of the air flow. The air guide plates are divided into two groups and are arranged along the axis of the air outlet, and the heating component can be arranged between the two groups of air guide plates as required, so that air flow forms hot air input into the indoor space after flowing through the heating component.
In actual operation, the volute 2 is communicated with the outdoor space through the air inlet channel 4, so that the fan has a fresh air function, or the volute 2 is communicated with the indoor space through the air inlet channel 4, and the heating assembly is arranged in the air outlet channel 3, so that the fan has a warm air function, which should be regarded as a specific embodiment of the invention.
Claims (9)
1. A fan with good air flow diffusion effect comprises a shell (1) with a volute (2) arranged therein, and an air outlet channel (3) and an air inlet channel (4) which are arranged in the shell (1), wherein a fan (5) is arranged in the volute (2), the middle part of the volute (2) extracts outside air through the air inlet channel (4) and discharges the outside air through the air outlet channel (3) under the drive of the fan (5), the front end part of the air outlet channel (3) is provided with an air inlet communicated with the volute (2), the bottom part of the air outlet channel is provided with an air outlet communicated with an external space, the fan is characterized in that the axis of the air outlet channel (3) is arranged along the tangential direction of the periphery of the volute (2), the top surface of the air outlet channel (3) is provided with a multi-stage guide plate (6), and the front end corner part of the multi-stage guide plate (6) close to the fan (5) forms a front end guide surface (7) through bending, the front end guide face (7) inclines along the tangential direction of the periphery of the fan (5), inner-layer airflow flowing through the air outlet and close to the fan (5) is abutted to the front end guide face (7) and is turned to be discharged outwards through the air outlet, and is staggered and avoided with outer-layer airflow flowing through the air outlet and far away from the fan (5), the front end guide face (7) is in a right-angle triangular shape, the front end edge of the multi-stage guide plate (6) and the side edge of the front end part close to the fan form two right-angle edges of the front end guide face (7), so that the right-angle part of the front end guide face (7) is tightly attached to the top wall of the volute (2).
2. The blower with good airflow diffusion effect according to claim 1, wherein the air inlet communicating the air outlet channel (3) and the volute (2) comprises a circumferential air inlet area (8) arranged on the front end surface of the air outlet channel (3) and a radial air inlet area (9) arranged at the front end of the air outlet channel (3) and facing the fan (5).
3. The fan with good airflow diffusion effect according to claim 2, wherein the top edge of the circumferential air inlet area (8) extends upwards to form a circumferential joint plate (10) which is tightly attached to the top wall of the volute (2); or the top edge of the radial air inlet area (9) extends upwards to form a radial connecting plate (11) which is tightly attached to the top wall of the volute (2).
4. The blower with good airflow diffusion effect according to claim 1, wherein the front end edge of the multi-stage guide plate (6) is arranged along the radial line of the fan (5); or the vertical projection of the multi-stage guide plate (6) completely falls into the air outlet.
5. A blower fan with good airflow diffusion effect according to any one of claims 1-4, characterized in that the guide plate comprises a front end guide surface (7), a middle section guide surface (12) and a rear end guide surface (13) which are arranged in sequence along the length direction of the guide plate, and the included angles between the front end guide surface (7), the middle section guide surface (12) and the rear end guide surface (13) and the horizontal plane are gradually reduced.
6. The fan with good air flow diffusion effect according to claim 5, wherein an included angle between the front end guide surface (7) and a horizontal plane is A, and A is more than or equal to 27 degrees and less than or equal to 45 degrees; or the included angle between the middle guide surface (12) and the horizontal plane is B, and B is more than or equal to 15 degrees and less than 27 degrees; or the included angle between the rear end guide surface (13) and the horizontal plane is C, and C is more than or equal to 5 degrees and less than 15 degrees.
7. The blower with good airflow diffusion effect according to claim 5, wherein the side wall of the volute (2) is spiral and is arranged with a diameter expansion along the circumferential direction by taking the axis of the fan (5) as the center, the side wall of the volute (2) comprises a large-diameter end edge and a small-diameter end edge which are respectively arranged at two ends, and the air inlet is arranged between the large-diameter end edge and the small-diameter end edge of the volute (2).
8. The fan with good airflow diffusion effect according to claim 6, wherein a wind guide fence (14) is arranged at the lower port of the air outlet, the wind guide fence (14) comprises an annular support (15) and a wind guide plate (16) vertically arranged at the middle part of the support (15), and the wind guide plate (16) is arranged at equal intervals along the length direction of the air outlet.
9. The blower with good air flow diffusion effect according to claim 6, wherein the casing (1) comprises an upper casing (17) and a lower casing (18), the upper casing (17) and the lower casing (18) both comprise a base plate (20) and a vertical plate (19) 5 arranged on the base plate (20), and the upper casing (17) and the lower casing (18) are overlapped and fixedly connected through a fastener.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110006402.2A CN112780608B (en) | 2021-01-05 | 2021-01-05 | Effectual fan of air current diffusion |
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| CN112780608B true CN112780608B (en) | 2022-05-24 |
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| CN113970960B (en) * | 2021-10-18 | 2022-10-14 | 荣耀终端有限公司 | Fan and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204140495U (en) * | 2014-10-10 | 2015-02-04 | 珠海格力电器股份有限公司 | Centrifugal fan volute, centrifugal fan and air conditioner |
| EP3372838A1 (en) * | 2017-03-07 | 2018-09-12 | ebm-papst Mulfingen GmbH & Co. KG | Air guide assembly |
| CN210399172U (en) * | 2019-07-04 | 2020-04-24 | 青岛海尔空调器有限总公司 | Wall-mounted air conditioner indoor unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112012001912T5 (en) * | 2011-06-10 | 2014-01-30 | Borgwarner Inc. | Turbocharger with double-flow turbine housing |
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2021
- 2021-01-05 CN CN202110006402.2A patent/CN112780608B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204140495U (en) * | 2014-10-10 | 2015-02-04 | 珠海格力电器股份有限公司 | Centrifugal fan volute, centrifugal fan and air conditioner |
| EP3372838A1 (en) * | 2017-03-07 | 2018-09-12 | ebm-papst Mulfingen GmbH & Co. KG | Air guide assembly |
| CN210399172U (en) * | 2019-07-04 | 2020-04-24 | 青岛海尔空调器有限总公司 | Wall-mounted air conditioner indoor unit |
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| CN112780608A (en) | 2021-05-11 |
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Inventor after: Lin Shengquan Inventor after: Shi Shenxiang Inventor after: Ding Yunbin Inventor after: Chen Yulong Inventor before: Shi Shenxiang Inventor before: Lin Shengquan Inventor before: Ding Yunbin Inventor before: Chen Yulong |
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