US20160108929A1 - Air-guiding cover and fan having the same - Google Patents
Air-guiding cover and fan having the same Download PDFInfo
- Publication number
- US20160108929A1 US20160108929A1 US14/883,047 US201514883047A US2016108929A1 US 20160108929 A1 US20160108929 A1 US 20160108929A1 US 201514883047 A US201514883047 A US 201514883047A US 2016108929 A1 US2016108929 A1 US 2016108929A1
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- US
- United States
- Prior art keywords
- air
- guiding
- outer ring
- fan
- inner ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
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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
- F04D29/444—Bladed diffusers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- 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
-
- 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
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/542—Bladed diffusers
- F04D29/544—Blade shapes
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
- F24H3/0411—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between for domestic or space-heating systems
- F24H3/0417—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between for domestic or space-heating systems portable or mobile
Definitions
- the present invention relates to an air-guiding cover and a fan having the air-guiding cover, wherein the fan using the air-guiding cover generates conical cyclone.
- Electric fans have long been widely used in life to improve ventilation and cooling the ambient temperature or alternatively warm the ambient temperature when working with electric heaters. Electric fans are easy to install and applicable to various conditions, and thus have become a “must have” appliance in almost all households.
- an electric fan is usually equipped with an oscillating device that allows the fan to rotate from side to side while blowing.
- the height of an electric fan also poses limitation to its active area, so it is also desired to make structural improvement on a fan's air-guiding cover so as to optimize the circulating efficiency of the fan.
- FIG. 1 depicts a conventional air-guiding cover that comprises curved air-guiding fins L.
- the air-guiding fins L guide air passing therethrough to form a spiral cyclone and focus on a particular direction with enhanced intensity.
- the active area of wind such guided is relatively small and the strong eddy caused by the spiral cyclone tends to make people affected feel uncomfortable.
- how to improve the existing air-guiding covers in terms of active area has become an issue for the related industry to address.
- the objective of the present invention is to provide an air-guiding cover and a fan having the air-guiding cover, wherein the fan using the air-guiding cover generates conical cyclone.
- an embodiment of the present invention is to provide an air-guiding cover, comprising: an inner ring; an outer ring being arranged around the inner ring; and a plurality of air-guiding fins being arranged in the inner ring and outer ring. Defining a windward plane between the outer ring and the inner ring.
- the air-guiding fins have an inclination with respect to a normal axis of the windward plane, and the inclination increases progressively as the air-guiding fins extend from the inner ring toward the outer ring.
- the inclination of the air-guiding fins at where the air-guiding fins joint the inner ring is about 0 degree.
- the inclination of the air-guiding fins at where the air-guiding fins joint the outer ring is about 45 degrees.
- the air-guiding cover further comprising a fastening ring located between the inner ring and the outer ring and connected to the air-guiding fins, respectively.
- the outer ring is provided with one or plural clips that are connected to an external structure.
- a fan comprising: a housing comprising an air inlet portion, an air outlet portion, and a guiding space defined between the air inlet portion and the air outlet portion; a rotating device being located in the guiding space and aligned with the air outlet portion, the rotating device comprising a motor fixedly installed in the housing and a blade connected to the motor and driven by the motor to rotate; and an air-guiding cover being provided at the air outlet portion and comprising an inner ring, an outer ring being arranged around the inner ring, a plurality of air-guiding fins being arranged between the outer ring and the inner ring in a whirlpool-like pattern, the outer ring and the inner ring defining a windward plane therebetween, the air-guiding fins having an inclination with respect to a normal axis of the windward plane, and the inclination increasing progressively as the air-guiding fins extend from the inner ring toward the outer ring.
- the fan comprises a heating device located in the guiding space and serving to heat air flow passing therethrough.
- the rotating device comprises a heat-insulating tube mounted around the motor.
- the housing comprises an air entrance located behind the motor.
- the inclination of the air-guiding fins at where the air-guiding fins joint the inner ring is about 0 degree.
- the inclination of the air-guiding fins at where the air-guiding fins joint the outer ring is about 45 degrees.
- the fan further comprising a fastening ring located between the inner ring and the outer ring and connected to the air-guiding fins, respectively.
- the outer ring is provided with one or plural clips that are connected to the housing.
- the disclosed air-guiding cover helps a fan to generate conical cyclone that covers widely and effectively promotes indoor air circulation.
- the fan of the present invention is equipped with a heating device and capable of generating widely distributed warm air flow when working with the disclosed air-guiding cover.
- the fan is a dual-purpose fan that is effective in both cooling and warming.
- the fan of the present invention uses the heat-insulating tube to protect its motor from overheat caused by the heating device.
- FIG. 1 is a front view of a conventional air-guiding cover.
- FIG. 2 is a front view of an air-guiding cover of the present invention.
- FIG. 3 is a perspective view of the air-guiding cover of the present invention.
- FIG. 4 is a schematic drawing illustrating a clip of the disclosed air-guiding cover used for fastening.
- FIG. 5 is a perspective view of a fan having the air-guiding cover of the present invention.
- FIG. 6 is a cross-sectional view of the fan of FIG. 5 .
- FIG. 7 is a back view of the fan of FIG. 5 .
- FIG. 8 is a graph showing coverage of a fan having the air-guiding cover of the present invention.
- FIG. 2 is a front view of an air-guiding cover of the present invention
- FIG. 3 is a perspective view of the air-guiding cover of the present invention.
- the present invention provides an air-guiding cover 100 , which comprises an inner ring 11 , an outer ring 12 being arranged around the inner ring 11 , a plurality of air-guiding fins 10 being arranged between the inner ring 11 and the outer ring 12 in a whirlpool-like pattern, and a fastening ring 14 located between the inner ring 11 and the outer ring 12 and connected to the air-guiding fins 10 , respectively.
- the outer ring 12 is peripherally provided with one or plural clips 15 for combining with an external structure.
- the clips 15 allow the disclosed air-guiding cover 100 to be conveniently attached to or detached from a corresponding combining mechanism K.
- the clip 15 has inclined surface at its front end for guiding the combining mechanism K into a retaining notch where the combining mechanism K is held. In practical use, the clip 15 may be placed in a space with its ceiling and floor fixed.
- the clip 15 By clockwise rotating the disclosed air-guiding cover 100 , the clip 15 clips and holds the combining mechanism K, so as to provide desired fastening (as shown in FIG. 4 ), and by rotating the disclosed air-guiding cover 100 anticlockwise, the disclosed air-guiding cover 100 is disassembled from the combining mechanism K, so as to achieve convenient assembling and disassembling.
- a windward plane 13 is defined between the outer ring 12 and the inner ring 11 .
- the air-guiding fins 10 have an inclination with respect to a normal axis (i.e. the direction in which air flows) of the windward plane 13 , and the inclination increases progressively as the air-guiding fins 10 extend from the inner ring 11 toward the outer ring 12 , wherein the inclination at where the air-guiding fins 10 joint the inner ring 11 is about 0 degree and at where the air-guiding fins 10 joint the outer ring 12 is about 45 degrees.
- FIG. 5 , FIG. 6 and FIG. 7 are a perspective view, a cross-sectional view and a back view of a fan having the air-guiding cover of the present invention, respectively.
- the present invention provides an air-guiding cover and a fan 200 having it.
- the fan 200 comprises a housing 20 , a rotating device 30 being contained in the housing 20 , the air-guiding cover 100 attached to one side of the housing 20 , and a heating device 40 installed inside the housing 20 .
- the housing 20 comprises an air inlet portion 21 , an air outlet portion 22 , a guiding space 23 located between the air inlet portion 21 and the air outlet portion 22 , and an air entrance 24 .
- the air entrance 24 is located at the back of the rotating device 30 for guiding air into the housing 20 , thereby preventing the rotating device 30 from overheat and heat-incurred damage.
- the heating device 40 is placed in the guiding space 23 for heating air passing therethrough, so as to generate warm air that is then sent out through the air outlet portion 22 .
- the heating device 40 may be an infrared heater, a far infrared ceramic heating plate, a halogen heater or other devices capable of converting electricity into thermal energy.
- the present invention provides no limitation thereto.
- the rotating device 30 is installed in the guiding space 23 and aligned with the air outlet portion 22 .
- the rotating device 30 comprises a motor 31 fixedly installed in the housing 20 , a blade 32 connected to the motor 31 and driven by the motor 31 to rotate, and a heat-insulating tube 33 mounted around the motor 31 .
- the motor 31 may be a DC motor, an AC motor, a synchronous motor or other devices powered to rotate.
- the present invention provides no limitation thereto.
- the heat-insulating tube 33 prevents the motor 31 from being affected and damaged by the warm air of the heating device 40 .
- the heat-insulating tube 33 has its rear end connected to the air entrance 24 and has its front end formed as an opening. When the rotating device 30 operates, external air around the housing 20 is drawn into the heat-insulating tube 33 through the air entrance 24 for cooling the motor 31 .
- the disclosed air-guiding cover 100 is provided at the air outlet portion 22 .
- the disclosed air-guiding cover 100 as described previously, comprises an inner ring 11 , an outer ring 12 being arranged around the inner ring 11 , a plurality of air-guiding fins 10 being arranged between the inner ring 11 and the outer ring 12 in a whirlpool-like pattern, and a fastening ring 14 located between the inner ring 11 and the outer ring 12 and connected to the air-guiding fins 10 , respectively.
- the outer ring 12 is peripherally provided with one or plural clips 15 for combining with an external structure.
- the clips 15 allow the disclosed air-guiding cover 100 to be conveniently attached to or detached from the air outlet portion 22 .
- a windward plane 13 is defined between the outer ring 12 and the inner ring 11 .
- the air-guiding fins 10 have an inclination with respect to a normal axis of the windward plane 13 , and the inclination increases progressively as the air-guiding fins 10 extend from the inner ring 11 toward the outer ring 12 , wherein the inclination at where the air-guiding fins 10 joint the inner ring 11 is about 0 degree and at where the air-guiding fins 10 joint the outer ring 12 is about 45 degrees.
- FIG. 8 is a graph showing coverage of a fan having the air-guiding cover of the present invention.
- the motor 31 drives the blade 32 to rotate, so that air at the air inlet portion 21 is drawn into the guiding space 23 .
- the blade 32 then deliver the air to the disclosed air-guiding cover 100 at the air outlet portion 22 , so as to make the air spread outward and form conical cyclone.
- the conventional air-guiding cover has its cyclone limited to the size of its outer ring because the air-guiding fins L remain perpendicular to the normal axis of its windward plane without any outward inclination.
- the air-guiding fins 10 of the present invention have the inclination with respect to the normal axis of the windward plane progressively increasing from the inner ring to the outer ring. Since the inclination at where the air-guiding fins 10 joint the inner ring 11 is about 0 degree, the generated conical cyclone also preserves the focused swirl as generated by the conventional turbo fan. As the inclination of the air-guiding fins 10 progressively increases up to about 45 degrees at where the air-guiding fins 10 joints the outer ring, the generated cyclone forms a conical shape that spread outward in all directions with an expanding angle of 45 degrees.
- the disclosed air-guiding cover 100 utilizes the outward progressively increasing inclination to guide air to form an outward expanding conical cyclone, thereby significantly increasing the active area of the fan.
- the fan 200 having the disclosed air-guiding cover 100 when equipped with a heating device can optionally generate warm air flow. This allows the fan 200 to act as both a cooling fan and a warming fan, and makes it a whole-year useful appliance, thereby significantly improving the applicability of the fan.
Abstract
The present invention relates to provide an air-guiding cover, comprising: an inner ring; an outer ring being arranged around the inner ring and defining a windward plane between the outer ring and the inner ring; and a plurality of air-guiding fins being arranged in the inner ring. The air-guiding fins have an inclination with respect to a normal axis of the windward plane, and the inclination increases progressively as the air-guiding fins extend from the inner ring toward the outer ring.
Description
- 1. Technical Field
- The present invention relates to an air-guiding cover and a fan having the air-guiding cover, wherein the fan using the air-guiding cover generates conical cyclone.
- 2. Description of Related Art
- Electric fans have long been widely used in life to improve ventilation and cooling the ambient temperature or alternatively warm the ambient temperature when working with electric heaters. Electric fans are easy to install and applicable to various conditions, and thus have become a “must have” appliance in almost all households.
- There are many kinds of electric fans commercially available, including stand fans, ventilation fans and hanging fans. For maximizing its active area or coverage, an electric fan is usually equipped with an oscillating device that allows the fan to rotate from side to side while blowing. However, the height of an electric fan also poses limitation to its active area, so it is also desired to make structural improvement on a fan's air-guiding cover so as to optimize the circulating efficiency of the fan.
-
FIG. 1 depicts a conventional air-guiding cover that comprises curved air-guiding fins L. The air-guiding fins L guide air passing therethrough to form a spiral cyclone and focus on a particular direction with enhanced intensity. However, the active area of wind such guided is relatively small and the strong eddy caused by the spiral cyclone tends to make people affected feel uncomfortable. Hence, how to improve the existing air-guiding covers in terms of active area has become an issue for the related industry to address. - In view of this, the objective of the present invention is to provide an air-guiding cover and a fan having the air-guiding cover, wherein the fan using the air-guiding cover generates conical cyclone.
- To achieve the goal mentioned above, an embodiment of the present invention is to provide an air-guiding cover, comprising: an inner ring; an outer ring being arranged around the inner ring; and a plurality of air-guiding fins being arranged in the inner ring and outer ring. Defining a windward plane between the outer ring and the inner ring. The air-guiding fins have an inclination with respect to a normal axis of the windward plane, and the inclination increases progressively as the air-guiding fins extend from the inner ring toward the outer ring.
- Preferably, the inclination of the air-guiding fins at where the air-guiding fins joint the inner ring is about 0 degree.
- Preferably, the inclination of the air-guiding fins at where the air-guiding fins joint the outer ring is about 45 degrees.
- Preferably, the air-guiding cover further comprising a fastening ring located between the inner ring and the outer ring and connected to the air-guiding fins, respectively.
- Preferably, the outer ring is provided with one or plural clips that are connected to an external structure.
- Another embodiment of the present invention is to provide a fan, comprising: a housing comprising an air inlet portion, an air outlet portion, and a guiding space defined between the air inlet portion and the air outlet portion; a rotating device being located in the guiding space and aligned with the air outlet portion, the rotating device comprising a motor fixedly installed in the housing and a blade connected to the motor and driven by the motor to rotate; and an air-guiding cover being provided at the air outlet portion and comprising an inner ring, an outer ring being arranged around the inner ring, a plurality of air-guiding fins being arranged between the outer ring and the inner ring in a whirlpool-like pattern, the outer ring and the inner ring defining a windward plane therebetween, the air-guiding fins having an inclination with respect to a normal axis of the windward plane, and the inclination increasing progressively as the air-guiding fins extend from the inner ring toward the outer ring.
- Preferably, the fan comprises a heating device located in the guiding space and serving to heat air flow passing therethrough.
- Preferably, the rotating device comprises a heat-insulating tube mounted around the motor.
- Preferably, the housing comprises an air entrance located behind the motor.
- Preferably, the inclination of the air-guiding fins at where the air-guiding fins joint the inner ring is about 0 degree.
- Preferably, the inclination of the air-guiding fins at where the air-guiding fins joint the outer ring is about 45 degrees.
- Preferably, the fan further comprising a fastening ring located between the inner ring and the outer ring and connected to the air-guiding fins, respectively.
- Preferably, the outer ring is provided with one or plural clips that are connected to the housing.
- The present invention has the following beneficial technical effects superior to the prior art:
- 1. Different from the prior-art air-guiding plate that only helps to form small and focused cylindrical cyclone, the disclosed air-guiding cover helps a fan to generate conical cyclone that covers widely and effectively promotes indoor air circulation.
- 2. The fan of the present invention is equipped with a heating device and capable of generating widely distributed warm air flow when working with the disclosed air-guiding cover. Thus the fan is a dual-purpose fan that is effective in both cooling and warming.
- 3. The fan of the present invention uses the heat-insulating tube to protect its motor from overheat caused by the heating device.
-
FIG. 1 is a front view of a conventional air-guiding cover. -
FIG. 2 is a front view of an air-guiding cover of the present invention. -
FIG. 3 is a perspective view of the air-guiding cover of the present invention. -
FIG. 4 is a schematic drawing illustrating a clip of the disclosed air-guiding cover used for fastening. -
FIG. 5 is a perspective view of a fan having the air-guiding cover of the present invention. -
FIG. 6 is a cross-sectional view of the fan ofFIG. 5 . -
FIG. 7 is a back view of the fan ofFIG. 5 . -
FIG. 8 is a graph showing coverage of a fan having the air-guiding cover of the present invention. - Hereinafter, illustrative embodiments and examples of the present disclosure will be described in detail with reference to the accompanying drawings so that inventive concept may be readily implemented by those skilled in the art. Moreover, the utility model in the drawings for convenience of explanation, the ratio is not necessarily the actual scale, while exaggerating the situation, these drawings and the proportion of non-intended to limit the scope of the utility model.
- The detailed configuration of the air-guiding cover of the present invention will be further discussed with reference to the accompanying drawings. As referred first,
FIG. 2 is a front view of an air-guiding cover of the present invention andFIG. 3 is a perspective view of the air-guiding cover of the present invention. - The present invention provides an air-guiding
cover 100, which comprises aninner ring 11, anouter ring 12 being arranged around theinner ring 11, a plurality of air-guidingfins 10 being arranged between theinner ring 11 and theouter ring 12 in a whirlpool-like pattern, and afastening ring 14 located between theinner ring 11 and theouter ring 12 and connected to the air-guidingfins 10, respectively. - Further referring to
FIG. 3 andFIG. 4 , theouter ring 12 is peripherally provided with one orplural clips 15 for combining with an external structure. Theclips 15 allow the disclosed air-guidingcover 100 to be conveniently attached to or detached from a corresponding combining mechanism K. Theclip 15 has inclined surface at its front end for guiding the combining mechanism K into a retaining notch where the combining mechanism K is held. In practical use, theclip 15 may be placed in a space with its ceiling and floor fixed. By clockwise rotating the disclosed air-guidingcover 100, theclip 15 clips and holds the combining mechanism K, so as to provide desired fastening (as shown inFIG. 4 ), and by rotating the disclosed air-guidingcover 100 anticlockwise, the disclosed air-guidingcover 100 is disassembled from the combining mechanism K, so as to achieve convenient assembling and disassembling. - Also referring to
FIG. 6 , awindward plane 13 is defined between theouter ring 12 and theinner ring 11. The air-guidingfins 10 have an inclination with respect to a normal axis (i.e. the direction in which air flows) of thewindward plane 13, and the inclination increases progressively as the air-guiding fins 10 extend from theinner ring 11 toward theouter ring 12, wherein the inclination at where the air-guiding fins 10 joint theinner ring 11 is about 0 degree and at where the air-guiding fins 10 joint theouter ring 12 is about 45 degrees. - Further description of the air-guiding cover and a fan having it is given below with reference to
FIG. 5 ,FIG. 6 andFIG. 7 , which are a perspective view, a cross-sectional view and a back view of a fan having the air-guiding cover of the present invention, respectively. - The present invention provides an air-guiding cover and a
fan 200 having it. Thefan 200 comprises ahousing 20, a rotatingdevice 30 being contained in thehousing 20, the air-guidingcover 100 attached to one side of thehousing 20, and aheating device 40 installed inside thehousing 20. - The
housing 20 comprises anair inlet portion 21, anair outlet portion 22, a guidingspace 23 located between theair inlet portion 21 and theair outlet portion 22, and anair entrance 24. Theair entrance 24 is located at the back of therotating device 30 for guiding air into thehousing 20, thereby preventing therotating device 30 from overheat and heat-incurred damage. - The
heating device 40 is placed in the guidingspace 23 for heating air passing therethrough, so as to generate warm air that is then sent out through theair outlet portion 22. Theheating device 40 may be an infrared heater, a far infrared ceramic heating plate, a halogen heater or other devices capable of converting electricity into thermal energy. The present invention provides no limitation thereto. - The
rotating device 30 is installed in the guidingspace 23 and aligned with theair outlet portion 22. Therotating device 30 comprises amotor 31 fixedly installed in thehousing 20, ablade 32 connected to themotor 31 and driven by themotor 31 to rotate, and a heat-insulatingtube 33 mounted around themotor 31. Themotor 31 may be a DC motor, an AC motor, a synchronous motor or other devices powered to rotate. The present invention provides no limitation thereto. The heat-insulatingtube 33 prevents themotor 31 from being affected and damaged by the warm air of theheating device 40. The heat-insulatingtube 33 has its rear end connected to theair entrance 24 and has its front end formed as an opening. When therotating device 30 operates, external air around thehousing 20 is drawn into the heat-insulatingtube 33 through theair entrance 24 for cooling themotor 31. - The disclosed air-guiding
cover 100 is provided at theair outlet portion 22. The disclosed air-guidingcover 100, as described previously, comprises aninner ring 11, anouter ring 12 being arranged around theinner ring 11, a plurality of air-guidingfins 10 being arranged between theinner ring 11 and theouter ring 12 in a whirlpool-like pattern, and afastening ring 14 located between theinner ring 11 and theouter ring 12 and connected to the air-guidingfins 10, respectively. - The
outer ring 12 is peripherally provided with one orplural clips 15 for combining with an external structure. Theclips 15 allow the disclosed air-guidingcover 100 to be conveniently attached to or detached from theair outlet portion 22. - A
windward plane 13 is defined between theouter ring 12 and theinner ring 11. The air-guidingfins 10 have an inclination with respect to a normal axis of thewindward plane 13, and the inclination increases progressively as the air-guidingfins 10 extend from theinner ring 11 toward theouter ring 12, wherein the inclination at where the air-guidingfins 10 joint theinner ring 11 is about 0 degree and at where the air-guidingfins 10 joint theouter ring 12 is about 45 degrees. - Please also refer to
FIG. 8 , which is a graph showing coverage of a fan having the air-guiding cover of the present invention. - In a preferred embodiment of the present invention, the
motor 31 drives theblade 32 to rotate, so that air at theair inlet portion 21 is drawn into the guidingspace 23. Theblade 32 then deliver the air to the disclosed air-guidingcover 100 at theair outlet portion 22, so as to make the air spread outward and form conical cyclone. - Through experiments, it is found that the conventional air-guiding cover has its cyclone limited to the size of its outer ring because the air-guiding fins L remain perpendicular to the normal axis of its windward plane without any outward inclination.
- Differently, the air-guiding
fins 10 of the present invention have the inclination with respect to the normal axis of the windward plane progressively increasing from the inner ring to the outer ring. Since the inclination at where the air-guidingfins 10 joint theinner ring 11 is about 0 degree, the generated conical cyclone also preserves the focused swirl as generated by the conventional turbo fan. As the inclination of the air-guidingfins 10 progressively increases up to about 45 degrees at where the air-guidingfins 10 joints the outer ring, the generated cyclone forms a conical shape that spread outward in all directions with an expanding angle of 45 degrees. In the conical cyclone, at a site being one meter from the windward plane, its diameter reaches 1.98 meters, and at two meters from the windward plane, its diameter reaches 3.64 meters. For the cases of 3 and 4 meters, its diameter reaches 5.32 and 7 meters, respectively. - To sum up, the disclosed air-guiding
cover 100 utilizes the outward progressively increasing inclination to guide air to form an outward expanding conical cyclone, thereby significantly increasing the active area of the fan. Besides, thefan 200 having the disclosed air-guidingcover 100 when equipped with a heating device can optionally generate warm air flow. This allows thefan 200 to act as both a cooling fan and a warming fan, and makes it a whole-year useful appliance, thereby significantly improving the applicability of the fan. - While example embodiments have been disclosed herein, it should be understood that other variations may be possible. Such variations are not to be regarded as a departure from the spirit and scope of example embodiments of the present application, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
Claims (15)
1. An air-guiding cover, comprising:
an inner ring;
an outer ring being arranged around the inner ring and defining a windward plane together with the inner ring therebetween; and
a plurality of air-guiding fins being arranged in the windward plane in a whirlpool-like pattern, wherein the air-guiding fins have an inclination with respect to a normal axis of the windward plane, and the inclination increases progressively as the air-guiding fins extend from the inner ring toward the outer ring.
2. The air-guiding cover of claim 1 , wherein the inclination of the air-guiding fins at where the air-guiding fins joint the inner ring is about 0 degree.
3. The air-guiding cover of claim 1 , wherein the inclination of the air-guiding fins at where the air-guiding fins joint the outer ring is about 45 degrees.
4. The air-guiding cover of claim 1 , further comprising a fastening ring located between the inner ring and the outer ring and connected to the air-guiding fins, respectively.
5. The air-guiding cover of claim 1 , wherein the outer ring is provided with one or plural clips that are connected to an external structure.
6. A fan, comprising:
a housing comprising an air inlet portion, an air outlet portion, and a guiding space defined between the air inlet portion and the air outlet portion;
a rotating device being located in the guiding space and aligned with the air outlet portion, the rotating device comprising a motor fixedly installed in the housing and a blade connected to the motor and driven by the motor to rotate; and
an air-guiding cover being provided at the air outlet portion and comprising an inner ring, an outer ring being arranged around the inner ring, a plurality of air-guiding fins being arranged between the outer ring and the inner ring in a whirlpool-like pattern, the outer ring and the inner ring defining a windward plane therebetween, the air-guiding fins having an inclination with respect to a normal axis of the windward plane, and the inclination increasing progressively as the air-guiding fins extend from the inner ring toward the outer ring.
7. The fan of claim 6 , wherein the fan comprises a heating device located in the guiding space and serving to heat air flow passing therethrough.
8. The fan of claim 6 , wherein the rotating device comprises a heat-insulating tube mounted around the motor.
9. The fan of claim 6 , wherein the housing comprises an air entrance located behind the motor.
10. The fan of claim 6 , wherein the inclination of the air-guiding fins at where the air-guiding fins joint the inner ring is about 0 degree.
11. The fan of claim 6 , wherein the inclination of the air-guiding fins at where the air-guiding fins joint the outer ring is about 45 degrees.
12. The fan of claim 6 , further comprising a fastening ring located between the inner ring and the outer ring and connected to the air-guiding fins, respectively.
13. The fan of claim 6 , wherein the outer ring is provided with one or plural clips that are connected to the housing.
14. The air-guiding cover of claim 2 , wherein the inclination of the air-guiding fins at where the air-guiding fins joint the outer ring is about 45 degrees.
15. The fan of claim 10 , wherein the inclination of the air-guiding fins at where the air-guiding fins joint the outer ring is about 45 degrees.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW103218257 | 2014-10-15 | ||
TW103218257U TWM497203U (en) | 2014-10-15 | 2014-10-15 | Improved internal-spinning swirl cyclone wind scooper and fan device including the same |
Publications (1)
Publication Number | Publication Date |
---|---|
US20160108929A1 true US20160108929A1 (en) | 2016-04-21 |
Family
ID=53187744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/883,047 Abandoned US20160108929A1 (en) | 2014-10-15 | 2015-10-14 | Air-guiding cover and fan having the same |
Country Status (4)
Country | Link |
---|---|
US (1) | US20160108929A1 (en) |
JP (1) | JP3201586U (en) |
CN (1) | CN204878069U (en) |
TW (1) | TWM497203U (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190331137A1 (en) * | 2018-04-25 | 2019-10-31 | Comefresh Electronic Industry Co., Ltd. | Air Circulator |
USD885540S1 (en) * | 2018-01-13 | 2020-05-26 | Guangdong Midea Environment Appliances Mfg. Co., Ltd | Heater net cover |
US11280352B2 (en) * | 2019-02-28 | 2022-03-22 | Schneider Electric It Corporation | Fan cover |
US11796218B2 (en) | 2017-08-18 | 2023-10-24 | Carrier Corporation | Fan housing and air conditioner device |
US20240102492A1 (en) * | 2022-09-26 | 2024-03-28 | Zt Group Int'l, Inc. Dba Zt Systems | Fan guard |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109357401A (en) * | 2018-08-29 | 2019-02-19 | 珠海格力电器股份有限公司 | Heater |
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US2429733A (en) * | 1945-04-10 | 1947-10-28 | Trent Inc | Electric heater of the fan type |
US4219325A (en) * | 1978-07-10 | 1980-08-26 | Robinson Industries, Inc. | Axial flow reversible fan for a heat treating furnace |
US7172387B2 (en) * | 2002-11-08 | 2007-02-06 | Daikin Industries, Ltd. | Fan guard for blower unit |
EP2123917A2 (en) * | 2008-05-19 | 2009-11-25 | Seb Sa | Front and rear grilles of a fan |
US8182218B2 (en) * | 2005-05-12 | 2012-05-22 | Allan Pearce | Vent and grilles |
WO2013160432A1 (en) * | 2012-04-26 | 2013-10-31 | Sdmo Industries | Axial flow cooling fan with centripetally guiding stator vanes |
US20140023495A1 (en) * | 2012-07-18 | 2014-01-23 | Bel'air International Group Ltd | Fan device with fluidic air function |
-
2014
- 2014-10-15 TW TW103218257U patent/TWM497203U/en not_active IP Right Cessation
-
2015
- 2015-08-14 CN CN201520611463.1U patent/CN204878069U/en not_active Expired - Fee Related
- 2015-10-06 JP JP2015005042U patent/JP3201586U/en not_active Expired - Fee Related
- 2015-10-14 US US14/883,047 patent/US20160108929A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2429733A (en) * | 1945-04-10 | 1947-10-28 | Trent Inc | Electric heater of the fan type |
US4219325A (en) * | 1978-07-10 | 1980-08-26 | Robinson Industries, Inc. | Axial flow reversible fan for a heat treating furnace |
US7172387B2 (en) * | 2002-11-08 | 2007-02-06 | Daikin Industries, Ltd. | Fan guard for blower unit |
US8182218B2 (en) * | 2005-05-12 | 2012-05-22 | Allan Pearce | Vent and grilles |
EP2123917A2 (en) * | 2008-05-19 | 2009-11-25 | Seb Sa | Front and rear grilles of a fan |
WO2013160432A1 (en) * | 2012-04-26 | 2013-10-31 | Sdmo Industries | Axial flow cooling fan with centripetally guiding stator vanes |
US9790959B2 (en) * | 2012-04-26 | 2017-10-17 | Sdmo Industries | Axial flow cooling fan with centripetally guiding stator vanes |
US20140023495A1 (en) * | 2012-07-18 | 2014-01-23 | Bel'air International Group Ltd | Fan device with fluidic air function |
US9151294B2 (en) * | 2012-07-18 | 2015-10-06 | Bel'air International Group Ltd. | Fan device with fluidic air function |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11796218B2 (en) | 2017-08-18 | 2023-10-24 | Carrier Corporation | Fan housing and air conditioner device |
USD885540S1 (en) * | 2018-01-13 | 2020-05-26 | Guangdong Midea Environment Appliances Mfg. Co., Ltd | Heater net cover |
US20190331137A1 (en) * | 2018-04-25 | 2019-10-31 | Comefresh Electronic Industry Co., Ltd. | Air Circulator |
US10920792B2 (en) * | 2018-04-25 | 2021-02-16 | Comefresh Electronic Industry Co., Ltd. | Air circulator |
US11280352B2 (en) * | 2019-02-28 | 2022-03-22 | Schneider Electric It Corporation | Fan cover |
US20240102492A1 (en) * | 2022-09-26 | 2024-03-28 | Zt Group Int'l, Inc. Dba Zt Systems | Fan guard |
Also Published As
Publication number | Publication date |
---|---|
JP3201586U (en) | 2015-12-17 |
CN204878069U (en) | 2015-12-16 |
TWM497203U (en) | 2015-03-11 |
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Legal Events
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |