CN202732505U - Protective cover and fan assembly and air conditioner outdoor unit - Google Patents
Protective cover and fan assembly and air conditioner outdoor unit Download PDFInfo
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- CN202732505U CN202732505U CN201220350521.6U CN201220350521U CN202732505U CN 202732505 U CN202732505 U CN 202732505U CN 201220350521 U CN201220350521 U CN 201220350521U CN 202732505 U CN202732505 U CN 202732505U
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- protective housing
- node
- impeller
- grille strip
- stator
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- 230000001681 protective effect Effects 0.000 title claims abstract description 74
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 4
- 239000000758 substrate Substances 0.000 description 23
- 230000002093 peripheral effect Effects 0.000 description 6
- 230000003068 static effect Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- CAWXEEYDBZRFPE-UHFFFAOYSA-N Hexazinone Chemical compound O=C1N(C)C(N(C)C)=NC(=O)N1C1CCCCC1 CAWXEEYDBZRFPE-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses a protective cover, a fan assembly and an air conditioner outdoor unit. The protective cover comprises gratings and an outer edge reinforced rib, a plurality of guide vanes are arranged between the gratings and the outer edge reinforced rib, the guide vanes extend from the outer edges of the gratings to the inner edge of the outer edge reinforced rib along the radial direction, and the guide vanes are arranged at intervals to form an annular array around a center shaft of the protective cover. Due to the facts that the guide vanes are arranged between the gratings and the outer edge reinforced rib, the gratings are designed into a sphere arc shape, strength of the gratings can be guaranteed fully, and meanwhile, air flow efficiency is improved, air quantity is improved and noise is reduced.
Description
Technical field
The utility model relates to the air-conditioning technique field, more particularly, relates to a kind of protective housing, fan component and air conditioner outdoor machine of fan.
Background technique
The fan that arranges in the air conditioner outdoor machine is mainly used in when air conditioner moves to the heat exchanger heat exchange, allows air and heat exchanger do heat exchange.The outside at outdoor machine fan arranges protective housing usually, this protective housing is generally circular grid and two kinds of structural types of square grid, Fig. 1 is circular cell structure, be provided with radially and circumferential grille strip at grid, ￠ 5 steel wires with circumferential grille strip radially, consist of the concentric circle that radius increases 5～10mm successively by some circumferential grille strips, radially grille strip generally is 12, radially is evenly distributed and is fixed on the circular grid; Fig. 2 is square cell structure, is comprised of the vertical and horizontal grille strip, and the vertical and horizontal grille strip is ￠ 5 steel wires, and wherein, vertically the spacing of every steel wire is 150～250mm, and laterally the spacing of every steel wire is 10～20mm.
The protective housing of above-mentioned circular grid and square cell structure mainly is to design with safe angle from ventilating, but guarantor's finger can not touch the fan blade that runs up, in the requirement that substantially can satisfy air conditioner aspect ventilation and the Security.But, from heat exchanger air out when the protective housing, loose wind phenomenon appears in peripheral air stream easily, when refrigeration, some is inhaled into the hot air of this loose wind phenomenon in the heat exchanger of air conditioner easily, causes the heat exchange efficiency of heat exchanger to descend, when ill-conditioned, even compressor can appear because temperature protection is forced to shut down, and the phenomenon that air conditioner can't normally be used; In addition, when outdoor unit fan of air conditioner moves, rush mutually between the mobile air and disturb, enclose object with the grille strip isoperimetric and rub, add that fan blade produces the effect that separates to air-flow, make air conditioner outdoor machine except compressor operating produces noise, the fan operation also produces noise, and, when rotation speed of the fan increases, air velocity speeds, turbulent flow is more, and it is larger that wind is made an uproar, and wind is made an uproar and can be along with the raising of wind speed the acceleration increase.
The model utility content
The deficiency that the utility model purpose exists in order to overcome above-mentioned prior art, a kind of reasonable in design, protective housing, fan component and air conditioner outdoor machine of flowing that can improve air is provided, and 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 adopted in the utility model is: a kind of protective housing, comprise grid and outer rim stiffening rib, between grid and outer rim stiffening rib, some stators are set, stator radially extends to the inside edge of outer rim stiffening rib from the outer ledge of grid, and some stators are spaced into the annular array around the protective housing central shaft.
Preferably, stator has wind-guiding face mobile for steering flow and the change airflow direction, and the wind-guiding face tilt is in the main body plane of protective housing.
Preferably, stator forms crooked platy structure when radially extending, and swell towards a side at the middle part of wind-guiding face.
Preferably, leading edge and the trailing edge of stator are made of four arcs respectively, the four arcs of trailing edge radially schedule out successively from inside to outside first node, Section Point, the 3rd node, the 4th node and the 5th node, the four arcs of leading edge radially schedule out successively from inside to outside the protelum point, the 9th node, the 8th node, the 7th node and the 6th node, the space angle of the line between the line between first node and the protelum point and the 5th node and the 6th node is 60～70 °, the space angle of the line between the line between Section Point and the 9th node and the 3rd node and the 8th node is 30～35 °, and the space angle of the line between the line between the 3rd node and the 8th node and the 4th node and the 7th node is 30～35 °.
Preferably, grid comprises some circumferential grille strips and some radially grille strips, circumferentially grille strip is the circular ring that radius does not wait, and from inside to outside successively around the central shaft setting of protective housing, some radially grille strips are used for some circumferential grille strips are connected and fixed, and the circumferential grille strip on the protective housing moves toward a lateral deviation of protective housing from inside to outside gradually.
Preferably, the diameter of each circumferential grille strip is geometric ratio and increases progressively from inside to outside.
Preferably, circumferentially the grille strip distance of moving toward a lateral deviation gradually from inside to outside is geometric ratio and increases progressively.
The utility model also proposes a kind of fan component, it is characterized in that, fan component comprises impeller and above-mentioned protective housing, protective housing is arranged on a side of impeller, impeller comprises some blades, and with respect to the sense of rotation of impeller, the leading edge of blade is in the forward position on the sense of rotation, the position of the trailing edge of blade lags behind its leading edge, and the position of the leading edge of stator lags behind its trailing edge.
Preferably, the leading edge direction angle of stator blade profile is 35～60 °, and the trailing edge direction angle is 35～60 °, and the blade profile established angle is 30～60 °.
The utility model also proposes a kind of air conditioner outdoor machine, comprise impeller and above-mentioned protective housing, impeller is installed in the inside of air conditioner outdoor machine, the position of the corresponding impeller of protective housing is installed on the outer side panel of air conditioner outdoor machine, the outermost edges of blade is arranged on the position between the inside edge of the outer ledge of corresponding grid and outer rim stiffening rib, impeller comprises some blades, sense of rotation with respect to impeller, the leading edge of blade is in the forward position on the sense of rotation, the position of the trailing edge of blade lags behind its leading edge, and the position of the leading edge of stator lags behind its trailing edge.
Compared with prior art, the beneficial effects of the utility model are:
As fan guard, it uses safe requirement, staff not to stretch into except needs possess and touches in the outlet frame the fan blade that runs up, also need solve the appropriate design problem of air quantity and noise, usually, air quantity and noise are the relations of conflict, and when air quantity was larger, the noise of its operation was also larger, the utility model is from the structural design of protective housing, sought a reasonable plan with suitable air output and suitable noise figure.Protective housing arranges some stators between grid and outer rim stiffening rib, the design of grid ball collar shape, circumferentially the span of grille strip is reasonable, radially grille strip connects adjacent circumferential grille strip with staggered disconnect mode, when can fully guarantee the intensity of grid, also make and form a suitable air-supply space between grid and fan blade.
Flowing of stator steering flow makes the air-flow pivot of maneuver to blowing out, and the kinetic energy with deflection transfers static energy to simultaneously, will move reducing noise 2～3db(A) significantly, increases simultaneously air blowing opening air-out wind speed and throughput, makes air output get a promotion about 10%.
Description of drawings
Fig. 1 is existing air conditioner supply grille structural representation;
Fig. 2 is existing another air conditioner supply grille structural representation;
Fig. 3 is the perspective view of the utility model fan component;
Fig. 4 is the back side perspective view of fan component shown in Figure 3;
Fig. 5 is the plan view of the utility model fan component;
Fig. 6 is the left view of fan component shown in Figure 5;
Fig. 7 is the S section enlarged view among Fig. 5;
Fig. 8 is the blade profile schematic representation of stator in the utility model fan component;
Fig. 9 is the fundamental diagram of the utility model fan component;
Figure 10 is the velocity triangle of stator in the utility model fan component.
Embodiment
Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Fan guard uses safe requirement, staff not to stretch into except needs possess and touches in the outlet frame the fan blade that runs up; also need solve the appropriate design problem of air quantity and noise; usually; air quantity and noise are the relations of conflict; when air quantity is larger; the noise of its operation is also larger, the utility model is from the structural design of fan guard, has sought a reasonable plan with suitable air output and suitable noise figure.
Referring to Fig. 3 to Fig. 6, Fig. 3 is the perspective view of the utility model fan component, Fig. 4 is the back side perspective view of fan component shown in Figure 3, Fig. 5 is the plan view of the utility model fan component, Fig. 6 is the left view of fan component shown in Figure 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 that is centered close to impeller 2 of protective housing 1, both in tandems.Impeller 2 is installed on the impeller shaft of drive unit (not shown), is driven and rotation 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-shaped members, 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 radially grille strips 122, and circumferentially grille strip 121 is circular, and each circumferential grille strip 121 is from inside to outside successively around the periphery that is arranged on central substrate 11; Some radially grille strips 122 be separately positioned between the edge of central substrate 11 and the most inboard circumferential grille strip 121 and two adjacent circumferential grille strips 121 between, radially (diametric(al)s of central substrate 11 or circumferential grille strip 121 etc.) extend, and grid 12 are fixed on the central substrate 11 and with two adjacent circumferential grille strips 121 interfix.Wind guiding component 13 arranges around grid 12, inboard outermost circumferential grille strip 121, the circular outer rim stiffening rib 14 of outside connection of connecting.
The center (circle) of central substrate 11, each circumferential grille strip 121 and outer rim stiffening rib 14 is positioned on the same axis, in this enforcement, this axis also is designed to overlap with the spin axis of impeller 2, for convenience, be fan shaft with this axis unified definition hereinafter, the center that is central substrate 11, each circumferential grille strip 121 and outer rim stiffening rib 14 is arranged on this fan shaft, and impeller 2 is around this fan shaft rotation.Need to prove that above-mentioned setting is a kind of better implementation, when practical application, can carry out as required other rational settings, and allow existence deviation to a certain degree.
Further, circumferentially the sectional shape of grille strip 121 and outer rim stiffening rib 14 roughly is square, circumferentially the cross-sectional width (radial distance) of grille strip 121 is that 8mm～12mm, section thickness (axial distance) are 8mm～10mm, and the cross-sectional width of outer rim stiffening rib 14 is that 10mm～15mm, section thickness are 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
bFor circumferential grille strip 121, from inside to outside, the most inboard circumferential grille strip 121 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 the grille strip outside be the 3rd circumferential grille strip, by that analogy, outermost circumferential grille strip 121 is defined as the circumferential grille strip of n, and (n is the quantity of circumferential grille strip 121, and to define the first circumferential grille strip diameter be D n=17 in the present embodiment),
1, second week is D to the grille strip diameter
2, the 3rd circumferential grille strip diameter is D
3The circumferential grille strip diameter of n is D
nThe diameter D of above-mentioned central substrate 11
0Refer to the edge of central substrate 11 to the perpendicular distance of fan shaft, the rotating diameter D of impeller 2
aRefer to that fan blade rotates the diameter of swept surface, circumferentially the diameter of grille strip 121 and outer rim stiffening rib 14 refers to that its kernel of section is to the perpendicular distance of 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
bD
a, circumferentially the quantity n of grille strip 121 need to satisfy above-mentioned relation.Preferably, D
bCompare D
aLarge 30-60mm.
From above-mentioned relation as can be known, the diameter that protective housing 1 of the present utility model is incited somebody to action each circumferential grille strip 121 from inside to outside is designed to the form that geometric ratio increases progressively, the diameter of each circumferential grille strip than the last week to the diameter of grille strip large 1/10～1/8, and close to impeller 2 gradually, be that each circumferential grille strip 121 is on the different planes, move toward a lateral deviation gradually from inside to outside, circumferential grille strip 121 more outward is the closer to impeller 2, the most inboard circumferential grille strip 121 apart from impeller 2 farthest, outermost circumferential grille strip 121 is nearest apart from impeller 2, make protective housing 1 be the shape that is similar to ball collar, distribute step by step from inside to outside, arrange radially.Preferably, each circumferential grille strip 121 also is designed to the form that geometric ratio increases progressively toward the distance that a lateral deviation is moved from inside to outside, and is 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 (being the distance that peak arrives plane, outer rim stiffening rib 14 place) is (1/3～1/2) D
0From the left view of Fig. 6, the profile of protective housing 1 side is arc.Compared to grille strip equidistant placement protective housing at grade, protective housing 1 of the present utility model increases progressively and is circumferential grille strip 121 that the ball collar shape lays and can improve Air Flow in the fan component, improve air quantity and reduce noise by the diameter geometric ratio.
Referring to Fig. 3 and Fig. 5, between the edge of central substrate 11 and the most inboard circumferential grille strip 121 and the radially grille strip 122 that evenly is provided with some between the two adjacent circumferential grille strips 121, these radially grille strip 122 be divided into multilayer by circumferential grille strip 121 in the radial direction, the radially grille strip 122 that definition connects central substrate 11 and the first circumferential grille strip is radially grille strip of first layer, connection the first circumferential grille strip and second week are radially grille strip of the second layer to the radially grille strip 122 of grille strip, the connection second week is the 3rd layer of radially grille strip to the radially grille strip 122 of grille strip and the 3rd circumferential grille strip, by that analogy, connect the circumferential grille strip of n-1 and the radially grille strip 122 of the circumferential grille strip of n and be the n layer radially grille strip (radially the number of plies of grille strip equates with the circumferential quantity of grille strip in the present embodiment, n=17).There is certain difference in the radially grille strip quantity that each layer comprises, the quantity of the radially grille strip 122 of outside layer is more than la m, in order to guarantee the structural strength of grid 12, specific as follows: the radially grille strip 122 of first to fourth layer is spaced circlewise array with 30 ° the angle (π/6 radians) of being separated by, the 5th is spaced circlewise array with 15 ° the angle (π/12 radians) of being separated by to the radially grille strip 122 of Floor 12, and the 13 to 17 layer radially grille strip 122 is spaced circlewise array with 7.5 ° the angle (pi/2 4 radians) of being separated by.In addition, the radially grille strip 122 of adjacent two layers is staggeredly arranged in an orderly way.The radially grille strip 122 that arranges 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, reduce the radially quantity of grille strip 122 in the situation that the mode that can also cooperate circumferential grille strip 121 to increase progressively with the diameter geometric ratio at the strength demand that satisfies grid 12, simultaneously arranges, thereby reduce the total quality of protective housing 1, also have certain contribution to improving Air Flow, improve air quantity and reducing noise simultaneously.
Referring to Fig. 7, Fig. 7 is the S section enlarged view among 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, each stator 131 equidistantly distributes and forms the stator array around fan shaft, and in the present embodiment, each stator 131 is separated by 2.5～3 ° and is arranged in order circlewise array.
Referring to Fig. 8, Fig. 8 is the blade profile schematic representation of stator in the utility model fan component, the chord length b of stator blade profile (imaginary cutting surface is take fan shaft as axis and passes through the cylndrical surface that B is ordered) 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, the blade profile leading edge is preferably 4～7mm to the maximum ga(u)ge place apart from e, the blade profile leading edge is preferably 5～9mm to the maximum deflection place apart from a, leading edge direction angle X1 is preferably 35～60 °, trailing edge direction angle X2 is preferably 35～60 °, and the 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 the blade profile leading edge is 4mm to the maximum ga(u)ge place apart from e, and the blade profile leading edge is 5.3mm to the maximum deflection place apart from a, leading edge direction angle X1 is 48 °, trailing edge direction angle X2 is 43 °, and namely bending angle θ is 91 °, and the blade profile established angle is 36 °.
Referring to Fig. 9 and Figure 10, Fig. 9 is the fundamental diagram of the utility model fan component, and S represents sense of rotation.Figure 10 is the velocity triangle of stator in the utility model fan component, in this enforcement, impeller 2 is movable parts, blade 22 is rotated counterclockwise (observing from the perimeter toward inner region) around fan shaft, and protective housing 1 is non-movable part, and stator 131 is relatively static, 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, also is the airspeed of stator blade import simultaneously, and C2u is the circumferential component (turning round speed) of stator blade inlet air flow speed, and U2 is the peripheral velocity of movable vane exit flow speed, and W2 is the relative velocity of movable vane exit flow speed; C3 is the speed of stator blade exit flow, and C3u is the circumferential component of stator blade exit flow speed; Cr is the radial velocity that stator advances (going out) implication stream, because stator 131 is static, so the vane inlet air-flow equates substantially that with the radial velocity of its exit flow the Cm stator is imported and exported the mean velocity of airspeed.
During impeller 2 running, the periphery acting ability of blade 22 is the strongest, and its air quantity mainly is by blade 22 peripheral acquisitions, and the periphery that therefore wind guiding component 13 is arranged on grid 12 just can be realized the leading role to air-flow substantially.In the present embodiment, the diameter of outer rim stiffening rib 14 is D
bBe slightly larger than the rotating diameter D of impeller 2
a, make the periphery of wind guiding component 13 corresponding impellers 2, thereby can reach preferably wind effect.Preferably, the rotating diameter D of impeller 2
aApproximate C point on the stator 131 to the twice of 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, roughly is in the neutral position of stator 131 at C point in the radial direction.The air that impeller 2 is discharged is during through the wind guiding component 13 of protective housing 1, and air-flow will produce deflection, 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 the stream swirl loss, and reduction eddy current noise.In the present embodiment, stator 131 is a kind of diffusion type blades, loose wind pivot of maneuver in, with 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 flowing of guiding air by stator 131, the air of undiscipline at the edge is guided to axial direction blow out, and the throughput of fan component is increased, and improves flowing of air, raises the efficiency, and reduces noise.
As shown in Figure 9, the opposite direction that the direction that vane foil tilts and stator blade profile tilt, and the sense of rotation with respect to impeller 2, the leading edge of blade 22 (windward side) is in the forward position on the sense of rotation, the position of trailing edge (air outlet) lags behind leading edge, being 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 the stator blade profile tilts to the opposite direction of the sense of rotation of impeller 2.In addition, as shown in Figure 7, with respect to the sense of rotation of impeller 2, protrude to the place ahead of sense of rotation at the middle part of stator 131, the stator two ends (with the connecting end of outermost circumferential grille strip 121 and with the connecting end of outer rim stiffening rib 14) the position lag behind the position at stator middle part.In order further to improve wind-guiding efficient, 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 referring to Fig. 7, the vertical join line of the vertical join line of C point and fan shaft and E point and fan shaft lays respectively at the both sides of the vertical join line of A 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 from the perimeter toward inner region), correspondingly, vane foil tilts to clockwise direction, and the stator blade profile is to counterclockwise inclination, and protrude to clockwise the place ahead at the middle part of stator 131.
In the above-described embodiment, the central substrate 11 of protective housing 1, circumferential grille strip 121 and outer rim stiffening rib 14 all are 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, be that central substrate 11 is square shape 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, and wind guiding component 13 is arranged between the circumferential grille strip 121 of outermost and the outer rim stiffening rib 14 and still is arranged to radially extend.In addition, central substrate 11 is mainly used in providing support and the installing effect, and protective housing 1 of the present utility model also can not arrange central substrate 11, and other circumferential grille strips 121 and grille strip 122 radially are set in the position of central substrate 11.Also can further set up other dependency structures of protective housing in the periphery of outer rim stiffening rib 14, and this outer rim stiffening rib 14 can be used as the part of these dependency structures.
The utility model also provides a kind of air conditioner outdoor machine, the said fans assembly is installed in this air conditioner outdoor machine, impeller 2 is installed in the internal chamber of air conditioner outdoor machine and near heat exchanger, is used for strengthening Air Flow, improves the heat exchange efficiency of air conditioner outdoor machine; 1 of protective housing is installed in the circular location of air supply inlet on the outer side panel (for example front panel) of air conditioner outdoor machine, and the slightly larger in diameter of air blowing opening is in the rotating diameter D of impeller 2
a, shown in Fig. 4～6, also be provided with screw positioning block 15 and some locating fasteners 16 on the outer rim stiffening rib 14 of protective housing 1.Screw positioning block 15 is radially outwards outstanding, is used for by protective housing 1 being fixed on the front panel of air conditioner outdoor machine with screw fit.Locating fastener 16 is inwardly outstanding vertically, is used for protective housing 1 being located and holding fixing.
When air conditioner outdoor machine is worked, impeller 2 rotarily drives Air Flow, makes air pass through heat exchanger from back or the side of air conditioner outdoor machine, flows forward with the air continuation after the heat exchanger heat exchange, and pass through successively impeller 2 and protective housing 1, discharge from the front of air conditioner outdoor machine at last.Air conditioner outdoor machine utilization of the present utility model is provided with the flowing state of the protective housing 1 change air of wind guiding component 13, improve loose wind, and can avoid peripheral air to be back to heat exchanger, thereby improve the heat exchange efficiency of heat exchanger, reduce noise and reduce power input to machine.Following table 1 is the test data of 3 air conditioner outdoor machines of a routine:
| Outdoor unit | Air quantity (m 3/h） | Noise dB(A) | Input power (W) |
| Present embodiment | 3500 | 56 | 120 |
| Conventional art | 3250 | 58 | 130 |
Table 1
As can be seen from the above table, utilize wind guiding blade 31 to improve flowing of air after, can improve to a certain extent the air quantity of air conditioner outdoor machine, reduce noise and reduce power input to a machine, it is about 10% specifically can to improve air quantity, reduces the about 2-3dB(A of noise).
Claims (10)
1. protective housing, comprise grid and outer rim stiffening rib, it is characterized in that, between described grid and described outer rim stiffening rib, some stators are set, described stator radially extends to the inside edge of described outer rim stiffening rib from the outer ledge of described grid, and described some stators are spaced into the annular array around described protective housing central shaft.
2. protective housing according to claim 1 is characterized in that, described stator has wind-guiding face mobile for steering flow and the change airflow direction, and described wind-guiding face tilt is in the main body plane of described protective housing.
3. protective housing according to claim 2 is characterized in that, described stator forms crooked platy structure when radially extending, and swell towards a side at the middle part of described wind-guiding face.
4. protective housing according to claim 2, it is characterized in that, leading edge and the trailing edge of described stator are made of four arcs respectively, the four arcs of described trailing edge radially schedule out successively from inside to outside first node, Section Point, the 3rd node, the 4th node and the 5th node, the four arcs of described leading edge radially schedule out successively from inside to outside the protelum point, the 9th node, the 8th node, the 7th node and the 6th node, the space angle of the line between the line between first node and the protelum point and the 5th node and the 6th node is 60～70 °, the space angle of the line between the line between Section Point and the 9th node and the 3rd node and the 8th node is 30～35 °, and the space angle of the line between the line between the 3rd node and the 8th node and the 4th node and the 7th node is 30～35 °.
5. protective housing according to claim 1, it is characterized in that, described grid comprises some circumferential grille strips and some radially grille strips, described circumferential grille strip is the circular ring that radius does not wait, and from inside to outside successively around the central shaft setting of protective housing, described some radially grille strips are used for described some circumferential grille strips are connected and fixed, and the circumferential grille strip on the described protective housing moves toward a lateral deviation of protective housing from inside to outside gradually.
6. protective housing according to claim 5 is characterized in that, the diameter of each described circumferential grille strip is geometric ratio and increases progressively from inside to outside.
7. protective housing according to claim 5 is characterized in that, the distance that described circumferential grille strip moves toward a lateral deviation from inside to outside gradually is geometric ratio and increases progressively.
8. fan component, it is characterized in that, described fan component comprises each described protective housing among impeller and the claim 1-7, described protective housing is arranged on a side of described impeller, described impeller comprises some blades, and with respect to the sense of rotation of described impeller, the leading edge of described blade is in the forward position on the sense of rotation, the position of the trailing edge of described blade lags behind its leading edge, and the position of the leading edge of described stator lags behind its trailing edge.
9. fan component according to claim 8 is characterized in that, the leading edge direction angle of described stator blade profile is 35～60 °, and the trailing edge direction angle is 35～60 °, and the blade profile established angle is 30～60 °.
10. air conditioner outdoor machine, it is characterized in that, comprise each described protective housing among impeller and the claim 1-7, described impeller is installed in the inside of described air conditioner outdoor machine, the position of the corresponding described impeller of described protective housing is installed on the outer side panel of described air conditioner outdoor machine, the outermost edges of described blade is arranged on the position between the inside edge of the outer ledge of corresponding described grid and described outer rim stiffening rib, described impeller comprises some blades, sense of rotation with respect to described impeller, the leading edge of described blade is in the forward position on the sense of rotation, the position of the trailing edge of described blade lags behind its leading edge, and the position of the leading edge of described stator lags behind its trailing edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220350521.6U CN202732505U (en) | 2012-07-18 | 2012-07-18 | Protective cover and fan assembly and air conditioner outdoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220350521.6U CN202732505U (en) | 2012-07-18 | 2012-07-18 | Protective cover and fan assembly and air conditioner outdoor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202732505U true CN202732505U (en) | 2013-02-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220350521.6U Expired - Lifetime CN202732505U (en) | 2012-07-18 | 2012-07-18 | Protective cover and fan assembly and air conditioner outdoor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202732505U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899576A (en) * | 2014-03-21 | 2014-07-02 | 美的集团股份有限公司 | Fan and air conditioner outdoor machine |
| CN107514708A (en) * | 2017-08-30 | 2017-12-26 | 广东顺威精密塑料股份有限公司 | A kind of air outlet grate of air conditioner outdoor machine |
-
2012
- 2012-07-18 CN CN201220350521.6U patent/CN202732505U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899576A (en) * | 2014-03-21 | 2014-07-02 | 美的集团股份有限公司 | Fan and air conditioner outdoor machine |
| CN103899576B (en) * | 2014-03-21 | 2017-05-24 | 美的集团股份有限公司 | fan and air conditioner outdoor machine |
| CN107514708A (en) * | 2017-08-30 | 2017-12-26 | 广东顺威精密塑料股份有限公司 | A kind of air outlet grate of air conditioner outdoor machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
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| CX01 | Expiry of patent term |