CN114876833A - Expanding impeller type fan lamp and working method thereof - Google Patents
Expanding impeller type fan lamp and working method thereof Download PDFInfo
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- CN114876833A CN114876833A CN202210579796.5A CN202210579796A CN114876833A CN 114876833 A CN114876833 A CN 114876833A CN 202210579796 A CN202210579796 A CN 202210579796A CN 114876833 A CN114876833 A CN 114876833A
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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
- 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
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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
- F04D29/26—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
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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
- F04D29/26—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
- F04D29/30—Vanes
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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
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
- F21V33/0088—Ventilating systems
- F21V33/0096—Fans, e.g. ceiling fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an expanding impeller type fan lamp and a working method thereof, the expanding impeller type fan lamp comprises a hollow suspension rod, a round LED patch lamp, an upper shell of the fan lamp, a lower shell of the fan lamp, an expanding impeller type fan and a circumferential air deflector which are arranged between the upper shell of the fan lamp and the lower shell of the fan lamp, wherein the hollow suspension rod is connected with the top center of the upper shell of the fan lamp and is superposed with the axis of the expansion impeller type fan lamp, the round LED patch lamp is arranged at the center of the outer side of the lower shell of the fan lamp, the upper shell of the fan lamp and the lower shell of the fan lamp form a volute of the expansion impeller type fan, the circumferential air deflectors are arranged around the volute of the expansion impeller type fan, the air inlet grille of the expansion impeller type fan lamp is arranged on the top end surface of the upper shell of the fan lamp, the expanding impeller type fan lamp can realize the effects of uniformly receiving wind, increasing the three-dimensional wind receiving space, improving the efficiency of the fan, reducing the product size and the like.
Description
Technical Field
The invention relates to the field of fan lamps, in particular to an expanding impeller type fan lamp and a working method thereof.
Background
The fan lamp is a device which covers dual functions of illumination and ventilation, and can be applied to meeting rooms, dining rooms, study rooms, bedrooms, living rooms, places with dense persons and the like. The fan lamp can be used as an auxiliary device of the air conditioner and can improve the use efficiency of the air conditioner besides the advantages of improving the indoor air quality and not occupying the ground space. Nowadays, people have higher and higher requirements on the indoor air environment quality, and the fan lamp gradually enters the life of people. At present, fan lamps in domestic and foreign markets generally have the problems of small three-dimensional wind receiving space and discomfort caused by direct blowing of outlet wind, and the comfortable wind speed of a human body is 0.2-0.3 m/s. Therefore, when the blown air of the fan lamp is close to a human body, the fan lamp has ideal human body perceived wind speed and is uniformly blown by the wind, and the important development direction of the fan lamp is provided. In addition, the size of the fan lamp also greatly affects the popularity of the fan lamp, for example, a common three-blade axial fan lamp adopts an axial fan with a larger diameter to improve the blowing range, and axial fan blades are exposed outside, and these characteristics all cause that the axial fan lamp cannot meet the internal requirements of safety, energy conservation, small size and beauty.
In addition, the axial air inlet and axial air outlet working modes of the axial flow fan are not suitable for the airflow trend of the fan lamp, and the change of the air outlet mode of the axial flow fan can cause serious airflow blockage, which leads to the inapplicability of the axial flow fan. Therefore, it is necessary to find a fan with low air resistance. In view of the advantages of the multi-blade centrifugal fan, such as large flow coefficient, high pressure coefficient and compact structure, the multi-blade centrifugal fan is widely applied to air interchangers. The airflow direction of the traditional centrifugal fan and the multi-wing centrifugal fan causes large energy loss when applied to a fan lamp, and the negative effect caused by single-side air inlet cannot be eliminated.
For the single-side air inlet multi-wing centrifugal fan, the closer the impeller inlet of the multi-wing centrifugal fan is, the more the speed of the airflow is often larger, and the lower the speed of the airflow far away from the inlet, so that the effect of doing work along the height direction of the blades is not uniform, and the overall work doing effect of the multi-wing centrifugal fan is reduced. It is therefore also necessary to eliminate the negative impact of single-sided air intake on fan performance. In addition, the air inlet and outlet modes of the multi-wing centrifugal fan are axial air inlet and circumferential air outlet respectively, and the fan lamp needs to be outwardly and downwardly air outlet, so that energy loss can be caused in the continuous steering process of air flow.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide an expanding impeller type fan lamp and a working method thereof, which can increase the three-dimensional wind receiving space, can uniformly receive wind, can improve the efficiency of a fan and has a miniaturized integral structure.
The technical scheme is as follows: the invention relates to an expanding impeller type fan lamp, which is characterized in that: comprises a hollow suspension rod (3), a round LED patch lamp (8), a fan lamp upper shell (1), a fan lamp lower shell (2), an expansion impeller type fan and a circumferential air deflector (4) which are arranged between the fan lamp upper shell (1) and the fan lamp lower shell (2), the hollow suspension rod (3) is connected with the top center of the upper shell (1) of the fan lamp, the LED surface-mounted lamp is overlapped with the axis of the expansion impeller type fan lamp, the circular LED surface-mounted lamp (8) is arranged at the center of the outer side of the lower shell (2) of the fan lamp, the upper shell (1) of the fan lamp and the lower shell (2) of the fan lamp form a volute of the expansion impeller type fan, the circumferential air deflectors (4) are uniformly arranged on the periphery in the volute of the expansion impeller type fan, and the air inlet grille (11) of the expansion impeller type fan lamp is arranged on the top end face of the upper shell (1) of the fan lamp;
the expansion impeller type fan comprises a blade upper portion wheel band (5), a wheel disc (6), a wheel cover (7), a motor (10) and an expansion impeller blade (9), the blade upper portion wheel band (5) is of a circular ring structure, the blade upper portion wheel band (5) is fixedly connected to the outer side of the upper end face of the expansion impeller blade (9), the wheel disc (6) comprises a top horizontal circular face and a circular truncated cone-shaped side face structure, the wheel cover (7) is of a circular truncated cone-shaped side face structure, the lower end of the expansion impeller blade (9) is uniformly distributed and fixedly connected to the upper end face of the wheel cover (7), the inner side of the wheel cover (7) is connected with the outer side of the wheel disc (6) through the horizontal circular ring structure, the motor (10) is located below the top horizontal circular face of the wheel disc (6), and is arranged right above the inner side of a lower shell (2) of a fan lamp.
Preferably, the upper casing (1) of the fan lamp is of a multi-section structure, the upper surface of the upper casing (1) of the fan lamp is of a horizontal circular structure, the outer diameter of the horizontal circular structure is the same as the diameter of the middle part of the radial width of the upper end face of the expanding impeller blade (9), the side face of the upper casing (1) of the fan lamp is of a three-section structure, the axial section profiles of the three-section structure are respectively arranged according to a vertical line, a transition circular arc and a curve from top to bottom, the curve is an outward extending structure from the top to the bottom, the curve starts from a horizontal state and then extends downwards to the outside to form a smooth curve structure, the vertical line is the periphery of the horizontal circular structure of the upper surface and extends vertically downwards, the transition circular arc is an arc transition between the vertical line and the curve, and the axial height ratio of the vertical line, the transition circular arc and the curve is 3.8:1: 12.
Preferably, the lower casing (2) of the fan lamp is of a three-section structure, the axial section profiles of the three-section structure are respectively a horizontal line, an outward inclined straight line and an arc, and the corresponding entities are respectively a horizontal circular structure, a truncated cone-shaped side structure and a circular ring-shaped structure, and specifically: the middle part of the lower shell (2) of the fan lamp is of a horizontal circular structure, the outer diameter of the horizontal circular structure is slightly larger than that of the wheel cover (7), the horizontal circular structure extends outwards to form a truncated cone-shaped side structure, the included angle between the generatrix of the truncated cone-shaped side structure and the horizontal plane is 5.4 degrees, the truncated cone-shaped side structure continues to extend outwards to form a circular ring-shaped structure, the axial section outline of the circular ring-shaped structure is an arc with the curvature radius of 3.7mm, and the axial height ratio of the circular ring-shaped structure to the truncated cone-shaped side structure is 1: 2.9.
Preferably, the inlet diameters of the upper end surface and the lower end surface of each expansion impeller blade (9) are respectively 134mm and 100mm, the outlet diameters of the upper end surface and the lower end surface of each expansion impeller blade (9) are respectively 158.5mm and 124mm, any cross section profile of each expansion impeller blade (9) along the height direction of the blade is the same and is of a curved airfoil structure, the number of the expansion impeller blades (9) is 36-45, the maximum thickness of each expansion impeller blade is 3mm, the included angle between the height direction of each expansion impeller blade (9) and the axial direction of the expansion impeller type fan lamp is 25 degrees, and the blade height of each expansion impeller blade (9) is 40 mm.
Preferably, an air inlet grille (11) is arranged in the middle of a horizontal circular structure at the top of the fan lamp upper shell (1), the structure of the air inlet grille (11) is composed of radial strip-shaped holes, and the air inlet grille (11) is arranged in the range of 82% of the outer diameter of the horizontal circular structure.
Preferably, the shaft end of the motor (10) and the top horizontal circular surface of the wheel disc (6) are fixedly connected through a fastener in the right center.
Preferably, an air blowing opening (12) is formed between the edge of the upper fan lamp shell (1) and the edge of the lower fan lamp shell (2), the air blowing opening (12) is an annular air outlet groove, and the groove width is 2-8 mm.
Preferably, the circumferential air deflector (4) is axially parallel to the expanding impeller type fan lamp, the circumferential air deflector (4) and the axial center section of the expanding impeller type fan lamp are arranged in a 21-inclined mode, the shortest distance between the inlet starting edge of the circumferential air deflector (4) and the axial direction of the expanding impeller type fan lamp is 82.7mm, the included angle between the extending direction of the inlet starting edge of the circumferential air deflector (4) and the axial direction of the expanding impeller type fan lamp is 22-25 degrees, the number of the circumferential air deflectors (4) is 15, the thickness of the circumferential air deflector (4) is 1.5mm, and the circumferential air deflector (4) extends outwards from the starting edge to the air blowing port (12).
Preferably, the radius of the upper bottom surface and the radius of the lower bottom surface of the truncated cone-shaped side surface structure formed by the wheel cover (7) are respectively 50mm and 62mm, and the included angle between the generatrix of the truncated cone-shaped side surface structure and the horizontal plane is 25 degrees.
A method of operating an expanding impeller fan lamp comprising the steps of:
s1: the air flow enters a volute of an expansion impeller type fan which is composed of an upper shell (1) of the fan lamp and a lower shell (2) of the fan lamp through an air inlet grille (11) and flows into the expansion impeller blades (9) at uniformly distributed flow velocity;
s2: the expansion impeller fan accelerates and pressurizes the airflow through rotation and guides the airflow to a compartment formed by the circumferential air deflector (4);
s3: the compartments formed by every two circumferential air deflectors (4) enable the entering air flow to generate the processes of volume expansion, pressurization and speed reduction;
s4: after the volume expansion and the pressurization and speed reduction processes are finished, the airflow flows into the narrow air blowing opening (12), the narrow air blowing opening (12) accelerates and reduces the pressure of the airflow, and finally the airflow with high speed, large air blowing area and large air blowing depth is blown out of the air blowing opening (12).
Has the advantages that:
(1) according to the air flow blower, after the inflow air flow is pressurized and accelerated by the expansion impeller fan, the air flow enters the compartment formed by the circumferential air deflectors to complete the processes of volume expansion and pressurization and speed reduction, and finally, the air flow is accelerated and reduced in pressure through the narrow air blowing opening to obtain the air flow flowing out at a high speed, so that the effects of increasing the air blowing area and the air blowing depth are achieved;
(2) the expansion impeller type fan has the special shape characteristic that the average diameter of the upper end surface is larger than that of the lower end surface, and the shape characteristic can enable the impeller to achieve the effect that air inlet almost tends to be uniform along the height direction of the blades, so that the problem of uneven air inlet caused by single-side air inlet of the traditional multi-wing centrifugal fan can be solved, and the overall working capacity of the multi-wing centrifugal fan can be improved;
(3) the expansion impeller type fan has the shape characteristic of inclining 25 degrees outwards in the axial direction, and the shape characteristic can enable gas flowing out of the expansion impeller to directly flow to a compartment formed by the circumferential air deflector without changing the flow direction of redundant gas, so that the airflow blocking effect is reduced, and the efficiency of the fan is improved;
(4) the gas flowing out through the expansion impeller type fan has obvious axial downward, circumferential and radial outward speeds, wherein the axial downward and radial speeds are favorable for expanding the blowing area and the blowing depth, the three-dimensional wind receiving space below the expansion impeller type fan lamp is improved, the circumferential speed can drive the gas inside and outside the air ring to mutually convect, and the wind receiving below the expansion impeller type fan lamp tends to be in a uniform state;
(5) compare in the fan lamp on the market at present, this application can effectively tame gas in impeller spiral case axial height within range to make it possess comparatively ideal wind speed and speed distribution in limited yardstick scope, consequently, the axial height of this application and the radial width who matches with it have all realized reducing the purpose of fan lamp yardstick.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a schematic structural view of the expanding impeller of the present invention;
FIG. 3 is a schematic view of the expanding impeller wheel disc and wheel cover of the present invention;
FIG. 4 is a view of the expanding impeller and circumferential air deflectors of the present invention;
FIG. 5 is a schematic view of a circumferential air deflector of the present invention;
FIG. 6 is a side plan view of the present invention;
FIG. 7 is a side bottom view of the present invention;
FIG. 8 is a radial cross-sectional airflow profile of a circumferential air deflection compartment of the present invention;
fig. 9 is a gas flow pattern from the expanding impeller to the circumferential air deflection compartment according to the present invention.
The fan lamp comprises a fan lamp upper shell 1, a fan lamp lower shell 2, a hollow suspension rod 3, a circumferential air deflector 4, a blade upper wheel hoop 5, a wheel disc 6, a wheel cover 7, a circular LED patch lamp 8, an expansion impeller blade 9, a motor 10, an air inlet grille 11 and an air blowing opening 12.
Detailed Description
The present application is further illustrated with reference to specific examples below.
Referring to fig. 1, 2, 6, 7 and 8, the expanding impeller type fan lamp according to the present invention includes a hollow suspension rod 3 and a circular LED patch lamp 8, a fan lamp upper housing 1 and a fan lamp lower housing 2, and an expanding impeller type fan and a circumferential air guiding plate 4 disposed between the fan lamp upper housing 1 and the fan lamp lower housing 2, wherein the hollow suspension rod 3 is connected to a top center of the fan lamp upper housing 1 and coincides with an axis of the expanding impeller type fan lamp, the circular LED patch lamp 8 is disposed at an outer center of the fan lamp lower housing 2, the fan lamp upper housing 1 and the fan lamp lower housing 2 form a volute of the expanding impeller type fan, the circumferential air guiding plate 4 is disposed around the inside of the volute of the expanding impeller type fan, and an air inlet grille 11 of the expanding impeller type fan lamp is disposed at a top end surface of the fan lamp upper housing 1. Expansion impeller formula fan includes blade upper portion rim of a tyre 5, rim plate 6, wheel cap 7, motor 10 and expansion impeller blade 9, blade upper portion rim of a tyre 5 is the loop annular structure, 5 rigid couplings of blade upper portion rim of a tyre are in the expansion impeller blade 9 up end outside, rim plate 6 includes top horizontal round face and round platform shape side structure, rim cap 7 is the round platform shape side structure that the bottom surface radius is 50mm and 62mm respectively about, and the generating line of round platform shape side structure is 25 with the contained angle of horizontal plane, expansion impeller blade 9 lower extreme evenly distributed and rigid coupling are in the up end of rim cap 7, the inboard of rim cap 7 is connected through a horizontal loop annular structure with the outside of rim plate 6, motor 10 is located the horizontal round face below in top of rim plate 6, and arrange directly over fan lamp lower part casing 2 inboards.
Referring to fig. 1 and 8, the upper housing 1 of the fan lamp is a multi-stage structure, the upper surface of the upper housing 1 of the fan lamp is a horizontal circular structure, the outer diameter of the horizontal circular structure is the same as the diameter of the middle part of the radial width of the upper end surface of the expanding impeller blade 9, the side surface of the upper housing 1 of the fan lamp is a three-stage structure, the axial cross-sectional profile of the three-stage structure is arranged according to a vertical line, a transition arc and a curve from top to bottom, wherein the curve is an outward extending structure from top to bottom, and extends from a horizontal state to a smooth curve structure downwards and outwards, the vertical line is an outer periphery of the horizontal circular structure on the upper surface extending vertically downwards, the transition arc is an arc transition between the vertical line and the curve, and the axial height ratio of the vertical line, the transition arc and the curve is 3.8:1: 12.
Referring to fig. 1 and 8, the lower housing 2 of the fan lamp is a three-section structure, axial cross-sectional profiles of the three-section structure are respectively a horizontal line, an outward inclined straight line and an arc, and the corresponding entities are respectively a horizontal circular structure, a truncated cone-shaped side structure and a circular ring-shaped structure, specifically: the middle part of the lower shell 2 of the fan lamp is of a horizontal circular structure, the outer diameter of the horizontal circular structure is slightly larger than that of the wheel cover 7, the horizontal circular structure extends outwards to form a truncated cone-shaped side surface structure, the included angle between the generatrix of the truncated cone-shaped side surface structure and the horizontal plane is 5.4 degrees, the truncated cone-shaped side surface structure continues to extend outwards to form a circular ring-shaped structure, the axial section outline of the circular ring-shaped structure is an arc with the curvature radius of 3.7mm, and the axial height ratio of the circular ring-shaped structure to the truncated cone-shaped side surface structure is 1: 2.9.
Referring to fig. 2 and 3, the inlet diameters of the upper and lower end surfaces of the expanding impeller blade 9 are 134mm and 100mm, the outlet diameters of the upper and lower end surfaces of the expanding impeller blade 9 are 158.5mm and 124mm, any cross-sectional profile of the expanding impeller blade 9 in the blade height direction is the same, and both the expanding impeller blade 9 and the expanding impeller blade 9 are of a curved airfoil structure, the number of the expanding impeller blades 9 is 36 to 45, the maximum thickness is 3mm, the included angle between the blade height direction of the expanding impeller blade 9 and the axial direction of the expanding impeller type fan lamp is 25 °, and the blade height of the expanding impeller blade 9 is 40 mm.
Referring to fig. 1 and 6, an air inlet grill 11, which is formed of radial strip-shaped holes and is disposed within 82% of the outer diameter of a horizontal circular structure, is disposed at the center of the horizontal circular structure at the top of the upper case 1 of the fan lamp.
Referring to fig. 1 and 3, the shaft end of the motor 10 and the top horizontal circular surface of the wheel disc 6 are fixedly connected through a fastener in the right center.
Referring to fig. 1 and 8, the air outlet 12 is an annular air outlet slot, wherein the width of the annular air outlet slot is 2-8 mm.
Referring to fig. 4 and 5, the circumferential air deflector 4 is axially parallel to the expanding impeller type fan lamp, the circumferential air deflector 4 and the axial center section of the expanding impeller type fan lamp are obliquely arranged at 21 degrees, the shortest distance between the inlet starting edge of the circumferential air deflector 4 and the axial line of the expanding impeller type fan lamp is 82.7mm, the included angle between the extending direction of the inlet starting edge of the circumferential air deflector 4 and the axial direction of the expanding impeller type fan lamp is 22-25 degrees, the number of the circumferential air deflectors 4 is 15, the thickness of the circumferential air deflector 4 is 1.5mm, and the circumferential air deflector 4 extends outwards from the starting edge to the air blowing port 12.
Referring to fig. 8 and 9, the method of operating the expanding impeller fan lamp according to the present invention includes the steps of:
s1: the air flow enters a volute of an expansion impeller type fan which is composed of an upper shell (1) of the fan lamp and a lower shell (2) of the fan lamp through an air inlet grille (11) and flows into the expansion impeller blades (9) at uniformly distributed flow velocity;
s2: the expansion impeller fan accelerates and pressurizes the airflow through rotation and guides the airflow to a compartment formed by the circumferential air deflector (4);
s3: the compartments formed by every two circumferential air deflectors (4) enable the entering air flow to generate the processes of volume expansion, pressurization and speed reduction;
s4: after the volume expansion and the pressurization and speed reduction processes are finished, the airflow flows into the narrow air blowing opening (12), the narrow air blowing opening (12) accelerates and reduces the pressure of the airflow, and finally the airflow with high speed, large air blowing area and large air blowing depth is blown out of the air blowing opening (12).
It should be noted that, referring to fig. 1 and 8, the cylindrical structure of the lateral upper part of the fan lamp upper housing 1, the axial cross-sectional profile of which is a vertical line, is a structure in which the outer circumference of the upper surface horizontal circular structure extends vertically downward, and the extending height thereof is 20mm or more, so that the expanding impeller can achieve a sufficiently uniform air intake.
The fan lamp can effectively solve the problems of small three-dimensional wind receiving space, direct blowing, uneven wind receiving and large product size, adopts the expansion impeller as a working element of the fan lamp, the expansion impeller type fan can enable airflow to flow into the blades of the expansion impeller at the approximately uniformly distributed flow rate, the airflow flows to the compartment formed by the circumferential air deflectors after the expansion impeller rotates, accelerates and boosts the pressure, and the air flows to the compartment formed by the circumferential air deflectors after the volume is expanded and the process of boosting and then reducing the pressure is carried out in the compartment formed by every two circumferential air deflectors, so that the airflow has higher speed at the blowing port, and the effects of increasing the blowing area and the blowing depth can be realized; the expansion impeller has the special shape characteristic that the average diameter of the upper end surface is larger than that of the lower end surface, the shape characteristic can enable the impeller to achieve the effect that the inlet air almost tends to be uniform along the height direction of the blades, and the overall working capacity of the multi-wing centrifugal fan can be improved; the expanding impeller is provided with a shape characteristic which inclines 25 degrees outwards in the axial direction, and the shape characteristic can ensure that the gas flowing out of the expanding impeller directly flows to a compartment formed by the circumferential air deflectors without the condition that the flow direction of redundant gas is changed, so that the airflow blocking effect is reduced, and the efficiency of the fan is improved; the gas flowing out of the expansion impeller has obvious axial downward, circumferential and radial outward speeds, wherein the axial downward and radial speeds are favorable for expanding the blowing area and the blowing depth, the three-dimensional wind receiving space below the expansion impeller type fan lamp is improved, and the circumferential speed can drive the gas inside and outside the air ring to mutually convect, so that the wind receiving below the expansion impeller type fan lamp tends to be in a uniform state; the expanding impeller type fan lamp can effectively discipline gas within the range of the axial height of the impeller volute and enables the expanding impeller type fan lamp to have ideal wind speed and speed distribution within the limited scale range, so that the axial height of the expanding impeller type fan lamp and the radial width matched with the expanding impeller type fan lamp achieve the purpose of reducing the scale of the fan lamp.
Claims (10)
1. An expanding impeller fan light, comprising: comprises a hollow suspension rod (3), a round LED patch lamp (8), a fan lamp upper shell (1), a fan lamp lower shell (2), an expansion impeller type fan and a circumferential air deflector (4) which are arranged between the fan lamp upper shell (1) and the fan lamp lower shell (2), the hollow suspension rod (3) is connected with the top center of the upper shell (1) of the fan lamp, the LED surface-mounted lamp is overlapped with the axis of the expansion impeller type fan lamp, the circular LED surface-mounted lamp (8) is arranged at the center of the outer side of the lower shell (2) of the fan lamp, the upper shell (1) of the fan lamp and the lower shell (2) of the fan lamp form a volute of the expansion impeller type fan, the circumferential air deflectors (4) are uniformly arranged on the periphery in the volute of the expansion impeller type fan, and the air inlet grille (11) of the expansion impeller type fan lamp is arranged on the top end face of the upper shell (1) of the fan lamp;
the expansion impeller type fan comprises a blade upper portion wheel band (5), a wheel disc (6), a wheel cover (7), a motor (10) and an expansion impeller blade (9), the blade upper portion wheel band (5) is of a circular ring structure, the blade upper portion wheel band (5) is fixedly connected to the outer side of the upper end face of the expansion impeller blade (9), the wheel disc (6) comprises a top horizontal circular face and a circular truncated cone-shaped side face structure, the wheel cover (7) is of a circular truncated cone-shaped side face structure, the lower end of the expansion impeller blade (9) is uniformly distributed and fixedly connected to the upper end face of the wheel cover (7), the inner side of the wheel cover (7) is connected with the outer side of the wheel disc (6) through the horizontal circular ring structure, the motor (10) is located below the top horizontal circular face of the wheel disc (6), and is arranged right above the inner side of a lower shell (2) of a fan lamp.
2. The expanding impeller fan lamp of claim 1, wherein: the fan lamp upper portion casing (1) is of a multi-section structure, the upper surface of the fan lamp upper portion casing (1) is of a horizontal circular structure, the outer diameter of the horizontal circular structure is the same as the diameter of the middle portion of the radial width of the upper end face of the expansion impeller blade (9), the side face of the fan lamp upper portion casing (1) is of a three-section structure, the axial section outline of the three-section structure is arranged according to a vertical line, a transition circular arc and a curve from top to bottom, wherein the curve is an outward extending structure from top to bottom, the curve starts from a horizontal state and then extends downwards and outwards to form a smooth curve structure, the vertical line is the periphery of the upper surface horizontal circular structure and extends downwards vertically, the transition circular arc is the circular arc transition between the vertical line and the curve, and the axial height ratio of the vertical line, the transition circular arc and the curve is 3.8:1: 12.
3. The expanding impeller fan lamp of claim 1, wherein: the lower shell (2) of the fan lamp is of a three-section structure, the axial section profiles of the three-section structure are respectively a horizontal line, an outward inclined straight line and an arc, and the corresponding entities are respectively a horizontal circular structure, a truncated cone-shaped side structure and a circular ring-shaped structure, and the three-section structure specifically comprises the following components: the middle part of the lower shell (2) of the fan lamp is of a horizontal circular structure, the outer diameter of the horizontal circular structure is slightly larger than that of the wheel cover (7), the horizontal circular structure extends outwards to form a truncated cone-shaped side structure, the included angle between the generatrix of the truncated cone-shaped side structure and the horizontal plane is 5.4 degrees, the truncated cone-shaped side structure continues to extend outwards to form a circular ring-shaped structure, the axial section outline of the circular ring-shaped structure is an arc with the curvature radius of 3.7mm, and the axial height ratio of the circular ring-shaped structure to the truncated cone-shaped side structure is 1: 2.9.
4. The expanding impeller fan lamp of claim 1, wherein: the inlet diameters of the upper end face and the lower end face of each expansion impeller blade (9) are respectively 134mm and 100mm, the outlet diameters of the upper end face and the lower end face of each expansion impeller blade (9) are respectively 158.5mm and 124mm, any cross section profile of each expansion impeller blade (9) in the blade height direction is the same and is of a curved airfoil structure, the expansion impeller blades (9) are 36-45 in number, the maximum thickness is 3mm, the included angle between the blade height direction of each expansion impeller blade (9) and the axial direction of each expansion impeller type fan lamp is 25 degrees, and the blade height of each expansion impeller blade (9) is 40 mm.
5. The expanding impeller fan lamp of claim 1, wherein: the middle part of the horizontal circular structure at the top of the upper shell (1) of the fan lamp is provided with an air inlet grille (11), the structure of the air inlet grille (11) is composed of radial strip-shaped holes, and the air inlet grille (11) is arranged in the range of 82% of the outer diameter of the horizontal circular structure.
6. The expanding impeller fan lamp of claim 1, wherein: the shaft end of the motor (10) is fixedly connected with the horizontal circular surface at the top of the wheel disc (6) through a fastener.
7. The expanding impeller fan lamp of claim 1, wherein: an air blowing opening (12) is formed between the edge of the upper shell (1) of the fan lamp and the edge of the lower shell (2) of the fan lamp, the air blowing opening (12) is an annular air outlet groove, and the groove width is 2-8 mm.
8. The expanding impeller fan lamp of claim 1, wherein: the circumferential air deflector (4) is axially parallel to the expansion impeller type fan lamp, the circumferential air deflector (4) and the axial center section of the expansion impeller type fan lamp are arranged in a 21-degree inclined mode, the shortest distance between the inlet starting edge of the circumferential air deflector (4) and the axial direction of the expansion impeller type fan lamp is 82.7mm, the included angle between the extending direction of the inlet starting edge of the circumferential air deflector (4) and the axial direction of the expansion impeller type fan lamp is 22-25 degrees, the number of the circumferential air deflectors (4) is 15, the thickness of the circumferential air deflector (4) is 1.5mm, and the circumferential air deflector (4) extends outwards from the starting edge to the air blowing port (12).
9. The expanding impeller fan lamp of claim 1, wherein: the radiuses of the upper bottom surface and the lower bottom surface of the circular truncated cone-shaped side surface structure formed by the wheel cover (7) are respectively 50mm and 62mm, and the included angle between a generatrix of the circular truncated cone-shaped side surface structure and the horizontal plane is 25 degrees.
10. An operating method of an expanding impeller fan lamp, characterized in that: the method comprises the following steps:
s1: the air flow enters a volute of an expansion impeller type fan which is composed of an upper shell (1) of the fan lamp and a lower shell (2) of the fan lamp through an air inlet grille (11) and flows into the expansion impeller blades (9) at uniformly distributed flow velocity;
s2: the expansion impeller fan accelerates and pressurizes the airflow through rotation and guides the airflow to a compartment formed by the circumferential air deflector (4);
s3: the compartments formed by every two circumferential air deflectors (4) enable the entering air flow to generate the processes of volume expansion, pressurization and speed reduction;
s4: after the volume expansion and the pressurization and speed reduction processes are finished, the airflow flows into the narrow air blowing opening (12), the narrow air blowing opening (12) accelerates and reduces the pressure of the airflow, and finally the airflow with high speed, large air blowing area and large air blowing depth is blown out of the air blowing opening (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210579796.5A CN114876833A (en) | 2022-05-26 | 2022-05-26 | Expanding impeller type fan lamp and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210579796.5A CN114876833A (en) | 2022-05-26 | 2022-05-26 | Expanding impeller type fan lamp and working method thereof |
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| CN114876833A true CN114876833A (en) | 2022-08-09 |
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