CN102734234B - Protective housing, fan component and air conditioner outdoor machine - Google Patents
Protective housing, fan component and air conditioner outdoor machine Download PDFInfo
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- CN102734234B CN102734234B CN201210248731.9A CN201210248731A CN102734234B CN 102734234 B CN102734234 B CN 102734234B CN 201210248731 A CN201210248731 A CN 201210248731A CN 102734234 B CN102734234 B CN 102734234B
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- protective housing
- grille strip
- circumferential
- grille
- impeller
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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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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of protective housing, fan component and air conditioner outdoor machine, protective housing comprises grid, this grid comprises some circumferential grille strips and some radial grille strips, circumference grille strip is the circular ring that radius does not wait, and arrange around the central shaft of protective housing successively from inside to outside, some radial grille strips are used for some circumferential grille strips to be connected and fixed, and the circumferential grille strip on protective housing offsets toward the side of protective housing from inside to outside gradually.Protective housing of the present invention is made up of circumferential grille strip and radial grid, circumference grille strip ball arch design, each circumferential grille strip gradually toward impeller skew and diameter be geometric ratio increases progressively, while fully ensureing the intensity of grid, improves airflow efficiency, improves air quantity from inside to outside, reduction noise.<!--1-->
Description
Technical field
The present invention relates to air-conditioning technique field, more particularly, relate to a kind of protective housing of fan, fan component and air conditioner outdoor machine.
Background technique
The fan arranged in air conditioner outdoor machine, is mainly used in when air conditioner runs to heat exchanger heat exchange, allows air and heat exchanger do heat exchange.In the outside of outdoor machine fan, protective housing is set usually, this protective housing is generally circular gratings and square grid two kinds of structural types, Fig. 1 is circular gratings structure, grid is provided with grille strip that is radial and circumference, radial and circumferential grille strip is ￠ 5 steel wire, form by some circumferential grille strips the concentric circle that radius increases 5 ~ 10mm successively, radial grille strip is generally 12, is radially evenly distributed and is fixed on circular gratings; Fig. 2 is square cell structure, is made up of vertical and horizontal grille strip, and vertical and horizontal grille strip is ￠ 5 steel wire, and wherein, longitudinally the spacing of every root steel wire is 150 ~ 250mm, and laterally the spacing of every root steel wire is 10 ~ 20mm.
The protective housing of above-mentioned circular gratings and square cell structure, mainly to ventilate and the angle of safety designs, the finger of guarantor can not touch the fan blade run up, and is ventilating and substantially can meet the requirement of air conditioner in Security.But, from heat exchanger air out when by protective housing, easily there is loose wind phenomenon in peripheral air stream, when freezing, the hot air of this loose wind phenomenon some be easily inhaled in the heat exchanger of air conditioner, cause the heat exchange efficiency of heat exchanger to decline, time ill-conditioned, even there will be compressor to be forced to shut down due to temperature protection, and make the phenomenon that air conditioner cannot normally use; In addition, when outdoor unit fan of air conditioner runs, between the air of flowing, punching is disturbed mutually, encloses object rub with grille strip isoperimetric, add that fan blade produces the effect be separated to air-flow, make air conditioner outdoor machine except compressor operating produces noise, fan runs and also produces noise, and, when rotation speed of the fan increases, air velocity speeds, turbulent flow is more, wind is made an uproar larger, and it can be that acceleration increases along with the raising of wind speed that wind is made an uproar.
Summary of the invention
The deficiency that the object of the invention exists to overcome above-mentioned prior art, there is provided a kind of reasonable in design, protective housing, fan component and air conditioner outdoor machine that can improve the flowing of air, this protective housing, fan component and air conditioner outdoor machine can also be used for improving air quantity, improve loose wind phenomenon, improve heat exchange efficiency and reduce noise in addition.
The technical solution used in the present invention is: a kind of protective housing, comprise grid, grid comprises some circumferential grille strips and some radial grille strips, circumference grille strip is the circular ring that radius does not wait, and arrange around the central shaft of protective housing successively from inside to outside, some radial grille strips are used for some circumferential grille strips to be connected and fixed, and the circumferential grille strip on protective housing offsets toward the side of protective housing from inside to outside gradually.
Preferably, the diameter of each circumferential grille strip is that geometric ratio increases progressively from inside to outside.
Preferably, circumferential grille strip is than being positioned at inner side and adjacent circumferential grille strip large 1/10 ~ 1/8.
Preferably, the distance that circumferential grille strip offsets toward side from inside to outside is gradually that geometric ratio increases progressively.
Preferably, the radial grille strip of adjacent two layers is staggeredly arranged.
Preferably, protective housing also comprises central substrate, wind guiding component and outer rim stiffening rib, central substrate is located at the center of protective housing, the periphery of central substrate connects grid, outer rim reinforcing rib ring is around the outermost being arranged on protective housing, and wind guiding component is connected between outermost circumferential grille strip and outer rim stiffening rib.
The present invention also proposes a kind of fan component, this fan component comprises the impeller and protective housing that are disposed adjacent, protective housing comprises grid, grid comprises some circumferential grille strips and some radial grille strips, circumference grille strip is the circular ring that radius does not wait, and arrange around the central shaft of protective housing successively from inside to outside, radial grille strip to be arranged between two adjacent circumferential grille strips and they to be connected and fixed, and the circumferential grille strip on protective housing offsets toward impeller from inside to outside gradually.
Preferably, the distance that circumferential grille strip offsets toward side from inside to outside is gradually that geometric ratio increases progressively.
Preferably, protective housing also comprises central substrate, wind guiding component and outer rim stiffening rib, central substrate is located at the middle part of protective housing, the periphery of central substrate connects grid, outer rim reinforcing rib ring is around the outermost being arranged on protective housing, wind guiding component is connected between outermost circumferential grille strip and outer rim stiffening rib, and farthest, outer rim stiffening rib distance impeller is nearest for central substrate distance impeller.
The present invention also proposes a kind of air conditioner outdoor machine, and this air conditioner outdoor machine is provided with said fans assembly, and impeller is arranged on the inside of air conditioner outdoor machine, and protective housing is arranged on the outer side panel of air conditioner outdoor machine.
Compared with prior art, the invention has the beneficial effects as follows:
As fan guard, it except needing to possess the requirement of use safety, staff can not stretch in outlet frame except the fan blade that touches and run up, also need the appropriate design problem solving air quantity and noise, usually, air quantity and noise are the relations of conflict, and when air quantity is larger, its noise run is also larger, the present invention, from the structural design of protective housing, has found the reasonable plan that has suitable air output and suitable noise figure.Protective housing is made up of circumferential grille strip and radial grid, circumference grille strip ball arch design, each circumferential grille strip is from inside to outside gradually toward impeller skew and diameter is geometric ratio increases progressively, make the span of grid more reasonable, adjacent circumferential grille strip connects with staggered disconnect mode by radial grille strip, while fully ensureing the intensity of grid, also make the air-supply space that between grid and fan blade, formation one is suitable.
Be arranged on the wind guiding component between outermost circumferential grille strip and outer rim stiffening rib, be directed through the air-flow pivot of maneuver at protective housing edge to blowout, transfer the kinetic energy of deflection to static energy simultaneously, noise will be run significantly and reduce by 2 ~ 3db(A), increase air blowing opening air-out wind speed and throughput simultaneously, make air output get a promotion about 10%.
Accompanying drawing explanation
Fig. 1 is existing air conditioner supply grille structural representation;
Fig. 2 is another air conditioner supply grille structural representation existing;
Fig. 3 is the perspective view of fan component of the present invention;
Fig. 4 is the back side perspective view of fan component shown in Fig. 3;
Fig. 5 is the plan view of fan component of the present invention;
Fig. 6 is the left view of fan component shown in Fig. 5;
Fig. 7 is the S portion enlarged view in Fig. 5;
Fig. 8 is the blade profile schematic diagram of stator in fan component of the present invention;
Fig. 9 is the fundamental diagram of fan component of the present invention;
Figure 10 is the velocity triangle of stator in fan component of the present invention.
Embodiment
Below by way of embodiment, and the invention will be further described by reference to the accompanying drawings.
Fan guard except needing to possess the requirement of use safety, staff can not stretch in outlet frame except the fan blade that touches and run up; also need the appropriate design problem solving air quantity and noise; usually; air quantity and noise are the relations of conflict; when air quantity is larger; its noise run is also larger, and the present invention, from the structural design of fan guard, has found the reasonable plan that has suitable air output and suitable noise figure.
See Fig. 3 to Fig. 6, Fig. 3 is the perspective view of fan component of the present invention, Fig. 4 is the back side perspective view of fan component shown in Fig. 3, Fig. 5 is the plan view of fan component of the present invention, Fig. 6 is the left view of fan component shown in Fig. 5, and fan component comprises protective housing 1 and impeller 2, and protective housing 1 is arranged on the front of impeller 2, on the spin axis being centrally located at impeller 2 of protective housing 1, both in tandem.Impeller 2 is arranged on the impeller shaft of drive unit (not shown), is driven and rotate by drive unit, and this drive unit can be the power equipments such as motor.
Protective housing 1 comprises central substrate 11, grid 12, wind guiding component 13 and outer rim stiffening rib 14.Central substrate 11 is circular plate-like shape parts, is positioned at the middle part of protective housing 1.Grid 12 is arranged on the periphery of central substrate 11, comprises some circumferential grille strips 121 and some radial grille strips 122, and circumferential grille strip 121 is circular, and each circumferential grille strip 121 is from inside to outside successively around the periphery being arranged on central substrate 11; Some radial grille strips 122 to be separately positioned between the edge of central substrate 11 and the circumferential grille strip 121 of inner side and between two adjacent circumferential grille strips 121, radially (diametric(al) of central substrate 11 or circumferential grille strip 121 etc.) extends, and to be fixed on by grid 12 in central substrate 11 and to be interfixed by two adjacent circumferential grille strips 121.Wind guiding component 13 is arranged around grid 12, and inner side connects outermost circumferential grille strip 121, and outside connects circular outer rim stiffening rib 14.
The center (circle) of central substrate 11, each circumferential grille strip 121 and outer rim stiffening rib 14 is positioned on same axis, in this enforcement, this axis is also designed to the rotation axis coincident with impeller 2, for convenience, be hereafter fan shaft by this axis unified definition, namely the center of central substrate 11, each circumferential grille strip 121 and outer rim stiffening rib 14 is arranged on this fan shaft, and impeller 2 rotates around this fan shaft.It should be noted that, above-mentioned setting is one preferably implementation, can carry out other as required and reasonably arrange, and allow existence deviation to a certain degree when practical application.
Further, the sectional shape of circumference grille strip 121 and outer rim stiffening rib 14 is roughly square, the cross-sectional width (radial distance) of circumference grille strip 121 is 8mm ~ 12mm, section thickness (axial distance) is 8mm ~ 10mm, and the cross-sectional width of outer rim stiffening rib 14 is 10mm ~ 15mm, section thickness is 8mm ~ 10mm.The diameter of definition central substrate 11 is D
0, the rotating diameter of impeller 2 is D
a, the diameter of outer rim stiffening rib 14 is D
b; For circumferential grille strip 121, from inside to outside, the most circumferential grille strip 121 of inner side is defined as the first circumferential grille strip, what be adjacent is that second week is to grille strip, be positioned at second week to outside grille strip being the 3rd circumferential grille strip, by that analogy, outermost circumferential grille strip 121 is defined as the n-th circumferential grille strip, and (n is the quantity of circumferential grille strip 121, n=17 in the present embodiment), and to define the first circumferential grille strip diameter be D
1, second week is D to grille strip diameter
2, the 3rd circumferential grille strip diameter is D
3n-th circumferential grille strip diameter is D
n.The diameter D of above-mentioned central substrate 11
0refer to the perpendicular distance of edge to fan shaft of central substrate 11, the rotating diameter D of impeller 2
arefer to that fan blade rotates the diameter of swept surface, the diameter of circumferential grille strip 121 and outer rim stiffening rib 14 refers to the perpendicular distance of its kernel of section to fan shaft.There is following relation in above-mentioned each diameter:
D
0=(1/5～1/4)D
a；
D
1=D
0+(1/10～1/8)D
0；
D
2=D
1+(1/10～1/8)D
1；
D
3=D
2+(1/10～1/8)D
2；
……
D
n=D
n-1+(1/10～1/8)D
n-1；
D
b=D
n+(1/8～1/7)D
n；
In addition, because protective housing 1 needs to cover impeller 2 usually, therefore, D
b>D
a, the quantity n demand fulfillment above-mentioned relation of circumferential grille strip 121.Preferably, D
bcompare D
alarge 30-60mm.
From above-mentioned relation, the form that the diameter design of each circumferential grille strip 121 from inside to outside becomes geometric ratio to increase progressively by protective housing 1 of the present invention, the diameter of each circumferential grille strip than the last week to the diameter of grille strip large 1/10 ~ 1/8, and it is close to impeller 2 gradually, namely each circumferential grille strip 121 place on a different plane, offset toward side gradually from inside to outside, circumferential grille strip 121 is more outward the closer to impeller 2, the most circumferential grille strip 121 of inner side apart from impeller 2 farthest, outermost circumferential grille strip 121 is nearest apart from impeller 2, make protective housing 1 in the shape being similar to ball collar, distribute step by step from inside to outside, arrange radially.Preferably, the distance that each circumferential grille strip 121 offsets toward side from inside to outside is also designed to the form that geometric ratio increases progressively, corresponding with increasing progressively of diameter.
The peak of ball collar is the center of central substrate 11, the minimum point of ball collar is that outer rim stiffening rib 14(wind guiding component 13 and outer rim stiffening rib 14 are also close to impeller 2 gradually successively), its height (namely peak is to the distance of outer rim stiffening rib 14 place plane) is (1/3 ~ 1/2) D
0.From the left view of Fig. 6, the profile of protective housing 1 side arcuately.Compared to by grille strip equidistant placement protective housing at grade, protective housing 1 of the present invention is increased progressively by diameter geometric ratio and the circumferential grille strip 121 laid in ball collar shape can improve air flowing in fan component, improves air quantity and reduce noise.
See Fig. 3 and Fig. 5, between the edge of central substrate 11 and the circumferential grille strip 121 of inner side and be evenly provided with the radial grille strip 122 of some between two adjacent circumferential grille strips 121, these radial grille strips 122 are divided into multilayer by circumferential grille strip 121 in radial directions, the radial grille strip 122 that definition connects central substrate 11 and the first circumferential grille strip is the radial grille strip of first layer, connecting the first circumferential grille strip and second week to the radial grille strip 122 of grille strip is the radial grille strip of the second layer, connection second week is the radial grille strip of third layer to the radial grille strip 122 of grille strip and the 3rd circumferential grille strip, by that analogy, connecting the (n-1)th circumferential grille strip with the radial grille strip 122 of the n-th circumferential grille strip is that (number of plies of radial grille strip is equal with the quantity of circumferential grille strip in the present embodiment for the radial grille strip of n-th layer, n=17).There is certain difference in the radial grille strip quantity that each layer comprises, the number ratio la m of the radial grille strip 122 of outside layer is many, to ensure the structural strength of grid 12, specific as follows: the radial grille strip 122 of first to fourth layer is spaced array circlewise with the angle (π/6 radian) of 30 ° of being separated by, the radial grille strip 122 of five to Floor 12 is spaced array circlewise with the angle (π/12 radian) of 15 ° of being separated by, and the radial grille strip 122 of the ten three to ten seven layers is spaced array circlewise with the angle (pi/2 4 radian) of 7.5 ° of being separated by.In addition, the radial grille strip 122 of adjacent two layers is staggeredly arranged in an orderly way.The radial grille strip 122 arranged in the above described manner is except can being connected and fixed central substrate 11 and grid 12, two adjacent circumferential grille strips 121 respectively, can also when meet grid 12 strength demand, coordinate circumferential grille strip 121 to arrange in the mode that diameter geometric ratio increases progressively simultaneously reduce the quantity of radial grille strip 122, thus reduce the total quality of protective housing 1, to improving air flowing, improving air quantity and reducing noise, also there is certain contribution simultaneously.
See Fig. 7, Fig. 7 is the S portion enlarged view in Fig. 5, wind guiding component 13 comprises some stators 131, one end of these stators 131 connects the outer side surface of outermost circumferential grille strip 121, the other end connects the inner side surface of outer rim stiffening rib 14, equidistantly distribution formation one is around the stator array of fan shaft for each stator 131, and in the present embodiment, each stator 131 is separated by 2.5 ~ 3 ° and is arranged in order array circlewise.
Stator 131 be that be obliquely installed relative to the subject plane of protective housing 1 a, middle part towards side protuberance and the platy structure of integrally bending, two curved surfaces of these platy structure both sides as wind-guiding face, for guiding and changing the direction of air-flow.Stator 131 is leading edge near an end margin of impeller 2, and air-flow is entered by this end and passes wind guiding component 13, and the relative end margin away from impeller 2 of stator 131 is trailing edge.For stator 131 wind-guiding face, leading edge and trailing edge are made up of four arcs respectively, AB, BC, CD and DE four arcs is in trailing edge, FG, GH, HI and IJ four arcs is in leading edge, the radius of definition circular arc AB, BC, CD, DE, FG, GH, HI and IJ is respectively R1, R2, R3, R4, R5, R6, R7, R8, and above-mentioned A, B, C, D, E, F, G, H, I and J are respectively the node in trailing edge and leading edge.According to the result of test of many times, being preferably configured to of above-mentioned each radius: R1=95 ~ 105mm, R2=R1 × 43%, R3=R1 × 45%, R4=R1 × 108%, R5=R1 × 106%, R6=R1 × 61%, R7=R1 × 44%, R8=R1 × 98%, the space angle of AJ and EF is 60 ~ 70 °, the space angle of BI and CH is 30 ~ 35 °, the space angle of CH and DG is 30 ~ 35 °, and preferably, the space angle of BI and CH equals the space angle of CH and DG.
See Fig. 8, Fig. 8 is the blade profile schematic diagram of stator in fan component of the present invention, the chord length b of stator blade profile (imaginary cutting surface be axis with fan shaft and through the cylndrical surface of B point) is preferably 12 ~ 16mm, the maximum ga(u)ge c of blade profile is preferably 1 ~ 3mm, blade profile center line maximum deflection f is preferably 2 ~ 5mm, blade profile leading edge is preferably 4 ~ 7mm to the distance e at maximum ga(u)ge place, blade profile leading edge is preferably 5 ~ 9mm to the distance a at maximum deflection place, leading edge direction angle X1 is preferably 35 ~ 60 °, trailing edge direction angle X2 is preferably 35 ~ 60 °, blade profile established angle is preferably 30 ~ 60 °.In the present embodiment, chord length b is 12mm, maximum ga(u)ge c is 2mm, blade profile center line maximum deflection f is 3.4mm, and blade profile leading edge is 4mm to the distance e at maximum ga(u)ge place, and blade profile leading edge is 5.3mm to the distance a at maximum deflection place, leading edge direction angle X1 is 48 °, trailing edge direction angle X2 is 43 °, and namely bending angle θ is 91 °, and blade profile established angle is 36 °.
Impeller 2 comprises wheel hub 21 and some blades 22, and wheel hub 21 is fixed on the impeller shaft of drive unit, and driven by drive unit and rotate around fan shaft, some blades 22 are evenly fixed on the peripheral circumferential face of wheel hub 21.The outside (namely relative with impeller 2 side) of definition protective housing 1 is perimeter, and this perimeter is near observer or user; The outside (namely relative with protective housing 1 side) of definition impeller 2 is inner region, and this inner region is away from observer or user.In this enforcement, air is under the effect of fan component, and externally flowed in region by inner region, the side residing for impeller 2 is suction port (bleeding point), and the side residing for protective housing 1 is air outlet (relief opening).See Fig. 5, on the plan view of fan component, observe (definition and observer stand in the outside of fan component, from protective housing 1 side along the direction of fan shaft through protective housing 1 toward impeller 2 unilateral observation) from outside to inside, impeller 2 is for being rotated counterclockwise; See Fig. 6, on the left view of fan component, air-flow enters from the left side of fan component, after impeller 2 and protective housing 1, discharges from right side.For impeller 2, the side away from protective housing 1 is suction port, is air outlet near the side of protective housing 1; For protective housing 1, be suction port near the side of impeller 2, the side away from impeller 2 is air outlet, and protective housing 1 is arranged on the air outlet of impeller 2.
See the fundamental diagram that Fig. 9 and Figure 10, Fig. 9 are fan components of the present invention, S represents sense of rotation.Figure 10 is the velocity triangle of stator in fan component of the present invention, in this enforcement, impeller 2 is movable parts, blade 22 is rotated counterclockwise (observing toward inner region from perimeter) around fan shaft, and protective housing 1 is non-movable member, stator 131 geo-stationary, therefore in the air-conditioning system of this fan component, blade 22 is movable vanes, and stator 131 is stator blades.C1 is the absolute velocity of movable vane inlet air flow, and U1 is the peripheral velocity of movable vane inlet air flow, and W1 is the speed of the relative movable vane of movable vane inlet air flow; C2 is the absolute velocity of movable vane exit flow, and be also the airspeed of stator blade import, C2u is the circumferential component (turning round speed) of stator blade inlet air flow speed, and U2 is the peripheral velocity of movable vane outlet air flow velocity, and W2 is the relative velocity of movable vane outlet air flow velocity simultaneously; C3 is the speed of stator blade exit flow, and C3u is the circumferential component of stator blade outlet air flow velocity; Cr is the radial velocity that stator enters (going out) implication stream, and because stator 131 is static, therefore vane inlet air-flow is substantially equal with the radial velocity of its exit flow, and Cm stator imports and exports the mean velocity of airspeed.
When impeller 2 operates, the periphery of blade 22 acting ability is the strongest, and its air quantity is mainly obtained by blade 22 periphery, and the periphery therefore wind guiding component 13 being arranged on grid 12 just can realize the leading role to air-flow substantially.In the present embodiment, the diameter of outer rim stiffening rib 14 is D
bslightly larger than the rotating diameter D of impeller 2
a, make the periphery of the corresponding impeller 2 of wind guiding component 13, thus good wind effect can be reached.Preferably, the rotating diameter D of impeller 2
aapproximate the twice of the C point on stator 131 to the perpendicular distance of fan shaft, with reference to Fig. 7, the outermost edges of blade 22 is arranged near the C point of stator 131, and C point is roughly in the neutral position of stator 131 in radial directions.The air that impeller 2 is discharged is when the wind guiding component 13 of protective housing 1, and generations deflects by air-flow, and flow direction produces and changes, and the speed of turning round of air-flow reduces to C3u by C2u, air-flow by pivot of maneuver again to, reduce stream swirl loss, and reduce eddy current noise.In the present embodiment, stator 131 is a kind of diffusion type blades, loose wind pivot of maneuver to while, by kinetic energy (the 1/2* ρ * (C2u) of air-flow
2-1/2* ρ * (C3u)
2) be converted into the static pressure P of air-flow
st, namely air-flow obtains static energy.Stator 131 can be regarded as the extension of blade 22, continues by stator 131 flowing guiding air, undiscipline is guided to axial direction blowout at the air at edge, the throughput of fan component is increased, improves the flowing of air, raise the efficiency, reduce noise.
As shown in Figure 9, the direction that vane foil tilts is contrary with the direction that stator blade profile tilts, and relative to the sense of rotation of impeller 2, the leading edge (windward side) of blade 22 is in the forward position in sense of rotation, the position of trailing edge (air outlet) lags behind leading edge, namely vane foil tilts to the sense of rotation of impeller 2, and the position of stator leading edge then lags behind its trailing edge, and stator blade profile tilts to the opposite direction of the sense of rotation of impeller 2.In addition, as shown in Figure 7, relative to the sense of rotation of impeller 2, the middle part of stator 131 is protruded to the front of sense of rotation, and the position of stator two ends (with the outermost connecting end of circumferential grille strip 121 and the connecting end with outer rim stiffening rib 14) lags behind the position in the middle part of stator.In order to improve wind-guiding efficiency further, the position of the connecting end of itself and outermost circumferential grille strip 121 is arranged to lag behind in stator 131 and the position of the connecting end of outer rim stiffening rib 14, namely the both sides of the vertical join line of A point and fan shaft are laid respectively at see Fig. 7, C point and the vertical join line of fan shaft and the vertical join line of E point and fan shaft.In the present embodiment, impeller 2 is for being rotated counterclockwise, in other embodiments, impeller 2 also can be designed as turn clockwise (observing toward inner region from perimeter), correspondingly, vane foil tilts clockwise, and stator blade profile tilts counterclockwise, and the front clockwise, middle part of stator 131 is protruded.
In the above-described embodiment, the central substrate 11 of protective housing 1, circumferential grille strip 121 and outer rim stiffening rib 14 are all configured to circle or annular, but in other embodiments, central substrate 11, circumferential grille strip 121 and outer rim stiffening rib 14 also can be arranged to square, namely central substrate 11 is square structure, the circumferential grille strip 121 of square frame shape structure and outer rim stiffening rib 14 are separately fixed at the periphery of central substrate 11, wind guiding component 13 be arranged on outermost circumference grille strip 121 and outer rim stiffening rib 14 between and be still arranged to radially extend.In addition, central substrate 11 is mainly used in providing support and installing effect, and protective housing 1 of the present invention also can not arrange central substrate 11, arranges other circumferential grille strip 121 and radial grille strips 122 in the position of central substrate 11.Also can set up other dependency structures of protective housing further in the periphery of outer rim stiffening rib 14, and this outer rim stiffening rib 14 can as a part for these dependency structures.
The present invention also provides a kind of air conditioner outdoor machine, and said fans assembly is arranged in this air conditioner outdoor machine, and impeller 2 to be arranged in the internal chamber of air conditioner outdoor machine and near heat exchanger, for strengthening air flowing, to improve the heat exchange efficiency of air conditioner outdoor machine; Protective housing 1 is arranged on the circular location of air supply inlet on the outer side panel (such as front panel) of air conditioner outdoor machine, and the diameter of air blowing opening is slightly larger than the rotating diameter D of impeller 2
a, as shown in figures 4-6, the outer rim stiffening rib 14 of protective housing 1 is also provided with screw positioning block 15 and some locating fasteners 16.Screw positioning block 15 is radially given prominence to, for by protective housing 1 being fixed on the front panel of air conditioner outdoor machine with screw fit.Locating fastener 16 is inwardly given prominence to vertically, for being located by protective housing 1 and holding fixing.
When air conditioner outdoor machine works, impeller 2 rotarily drives air flowing, make air from air conditioner outdoor machine below or side by heat exchanger, continue flow forward with the air after heat exchanger heat exchange, and successively through impeller 2 and protective housing 1, finally discharge before air conditioner outdoor machine.Air conditioner outdoor machine of the present invention utilizes the protective housing 1 being provided with wind guiding component 13 to change the flowing state of air, improve loose wind, and peripheral air can be avoided to be back to heat exchanger, thus to improve the heat exchange efficiency of heat exchanger, reduce noise and reduce power input to machine.Table 1 is below the test data of conventional 3 air conditioner outdoor machines:
| Outdoor unit | Air quantity (m 3/h） | Noise dB(A) | Input power (W) |
| The present embodiment | 3500 | 56 | 120 |
| Conventional art | 3250 | 58 | 130 |
Table 1
As can be seen from the above table, after utilizing wind guiding blade 31 to improve the flowing of air, the air quantity of air conditioner outdoor machine can be improved to a certain extent, reduce noise and reduce power input to a machine, specifically can improve air quantity about 10%, reduce noise and be about 2-3dB(A).
Claims (9)
1. a protective housing, comprise grid, it is characterized in that, described grid comprises some circumferential grille strips and some radial grille strips, described circumferential grille strip is the circular ring that radius does not wait, and arranges around the central shaft of protective housing successively from inside to outside, and described some radial grille strips are used for described some circumferential grille strips to be connected and fixed, circumferential grille strip on described protective housing offsets toward the side of protective housing from inside to outside gradually, and the diameter of each described circumferential grille strip is that geometric ratio increases progressively from inside to outside.
2. protective housing according to claim 1, is characterized in that, described circumferential grille strip is than being positioned at inner side and adjacent circumferential grille strip large 1/10 ~ 1/8.
3. protective housing according to claim 1, is characterized in that, the distance that described circumferential grille strip offsets toward side from inside to outside is gradually that geometric ratio increases progressively.
4. protective housing according to claim 1, is characterized in that, the described radial grille strip of adjacent two layers is staggeredly arranged.
5. protective housing according to claim 1, it is characterized in that, described protective housing also comprises central substrate, wind guiding component and outer rim stiffening rib, described central substrate is located at the center of described protective housing, the periphery of described central substrate connects described grid, described outer rim reinforcing rib ring is around the outermost being arranged on described protective housing, and described wind guiding component is connected between outermost circumferential grille strip and described outer rim stiffening rib.
6. a fan component, it is characterized in that, described fan component comprises the impeller and protective housing that are disposed adjacent, described protective housing comprises grid, described grid comprises some circumferential grille strips and some radial grille strips, described circumferential grille strip is the circular ring that radius does not wait, and arrange around the central shaft of protective housing successively from inside to outside, described radial grille strip to be arranged between two adjacent circumferential grille strips and they to be connected and fixed, circumferential grille strip on described protective housing offsets toward impeller from inside to outside gradually, the diameter of each described circumferential grille strip is that geometric ratio increases progressively from inside to outside.
7. fan component according to claim 6, is characterized in that, the distance that described circumferential grille strip offsets toward side from inside to outside is gradually that geometric ratio increases progressively.
8. fan component according to claim 7, it is characterized in that, described protective housing also comprises central substrate, wind guiding component and outer rim stiffening rib, described central substrate is located at the middle part of described protective housing, the periphery of described central substrate connects described grid, described outer rim reinforcing rib ring is around the outermost being arranged on described protective housing, described wind guiding component is connected between outermost circumferential grille strip and described outer rim stiffening rib, apart from described impeller farthest, described outer rim stiffening rib is nearest apart from described impeller for described central substrate.
9. an air conditioner outdoor machine, is characterized in that, comprises the fan component according to any one of claim 6-8, and described impeller is arranged on the inside of described air conditioner outdoor machine, and described protective housing is arranged on the outer side panel of described air conditioner outdoor machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210248731.9A CN102734234B (en) | 2012-07-18 | 2012-07-18 | Protective housing, fan component and air conditioner outdoor machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210248731.9A CN102734234B (en) | 2012-07-18 | 2012-07-18 | Protective housing, fan component and air conditioner outdoor machine |
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| CN102734234A CN102734234A (en) | 2012-10-17 |
| CN102734234B true CN102734234B (en) | 2016-04-20 |
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| CN201210248731.9A Active CN102734234B (en) | 2012-07-18 | 2012-07-18 | Protective housing, fan component and air conditioner outdoor machine |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203570694U (en) * | 2013-08-24 | 2014-04-30 | 任文华 | Outlet housing for fan and the fan |
| CN103899576B (en) * | 2014-03-21 | 2017-05-24 | 美的集团股份有限公司 | fan and air conditioner outdoor machine |
| CN106545983B (en) * | 2016-12-06 | 2022-02-08 | 珠海格力电器股份有限公司 | Grid |
| DE102017209291A1 (en) * | 2017-06-01 | 2018-12-06 | Ziehl-Abegg Se | Fan and guide grille for a fan |
| US20220057104A1 (en) * | 2018-12-28 | 2022-02-24 | Springer Carrier Ltda. | Grille for ventilation apparatus |
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| CN102734234A (en) | 2012-10-17 |
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