CN104685218A - Propeller fan - Google Patents
Propeller fan Download PDFInfo
- Publication number
- CN104685218A CN104685218A CN201280076216.5A CN201280076216A CN104685218A CN 104685218 A CN104685218 A CN 104685218A CN 201280076216 A CN201280076216 A CN 201280076216A CN 104685218 A CN104685218 A CN 104685218A
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- Prior art keywords
- blade
- type fan
- propeller type
- secondary flow
- imaginary line
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection
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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
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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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/329—Details of the hub
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/682—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid extraction
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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
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A propeller fan (1) comprises a hub (3) having a cylindrical wall (3a), and a plurality of blades (5) extending radially from the outer circumferential face (3d) of the cylindrical wall of the hub, wherein a secondary flow control slit (7) is provided between adjacent pairs of blades on the outer circumferential face, each of the plurality of secondary flow control slits extends through the cylindrical wall and connects the interior of the hub to the exterior of the hub, the downstream end in the cylindrical wall is closed, the upstream end of the cylindrical wall is opened, and from a side view, each of the plurality of secondary flow control slits extends at an angle with respect to the axis of rotation for the propeller fan and extends at an angle in the same direction as the direction in which the blade bases for the plurality of blades are formed.
Description
Technical field
The present invention relates to propeller type fan, blast device and outdoor unit.
Background technique
The hub that propeller type fan generally has the cylindrical shape be connected with driving source and the many pieces of blades radially extended from hub outer circumferential face.In addition, Patent Document 1 discloses following structure, in each blade, position maximum for camber ratio is set in the position closer to blade root base portion compared with blade outer periphery, and camber ratio is successively decreased to blade root base portion from the position that camber ratio is maximum.Utilize this structure, near blade root base portion, inhibit the generation of whirlpool and do not do large merit.
At first technical paper
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2012-052443 publication (mainly Fig. 1)
Summary of the invention
Invent problem to be solved
In addition, because the pressure gradient of the geostrophic force that acts on inversely in the sense of rotation with propeller type fan and adjacent blade face balances, therefore, interlobate air-flow is along blades flows.But the existence of above-mentioned pressure gradient is throughout hub outer circumferential face, and in the boundary layer of hub outer circumferential face, the relative velocity of air-flow is little, so geostrophic force diminishes.Therefore, near hub outer circumferential face, above-mentioned balance is destroyed, and due to the impact of above-mentioned pressure gradient, produces towards the Secondary Flow of adjacent blades.And because this Secondary Flow and blade collide, whirlpool produces, and this whirlpool becomes the reason of noise.
On the other hand, according to propeller type fan disclosed in patent documentation 1, successively decrease to blade root base portion from the position that camber ratio is maximum by making camber ratio, the whirlpool produced at the joint of blade and hub can be suppressed, such problem but the merit of blade near the joint that there is blade and hub diminishes.
The present invention makes in view of the foregoing, its object is to provide a kind of propeller type fan, it can suppress the whirlpool produced at the joint of blade and hub, and realizes the low noise of fan, and does not rely on the setting of the camber ratio of the blade near blade root base portion.
For the means of dealing with problems
Propeller type fan of the present invention for reaching above-mentioned purpose has: hub portion, and described hub portion has barrel, and multiple blade, described multiple blade radially extends from the outer circumferential face of the described barrel in described hub portion, described in adjacent a pair on described outer circumferential face between blade, be provided with Secondary Flow and control gap, multiple described Secondary Flow controls gap through described barrel respectively, and be communicated with the inside in described hub portion and the outside in this hub portion, the downstream of described barrel is closed, the upstream extremity of this barrel is open, when observing from the side, multiple described Secondary Flow controls gap and extends obliquely relative to the spin axis of this propeller type fan respectively, and tiltedly extend in the direction updip that the formation direction of the blade root base portion with described multiple blade is identical.
Blast device of the present invention for reaching this object has: the propeller type fan of the invention described above; The driving source of driving force is given to described propeller type fan; And hold the housing of described propeller type fan and described driving source.
Further, the outdoor unit of the present invention for reaching this object has: heat exchanger; The propeller type fan of the invention described above; The driving source of driving force is given to described propeller type fan; And hold the housing of described propeller type fan, described driving source and described heat exchanger.
The effect of invention
According to propeller type fan of the present invention, the whirlpool produced at the joint of blade and hub can be suppressed, realize the low noise of fan, and do not rely on the setting of the camber ratio of the blade near blade root base portion.
Accompanying drawing explanation
Fig. 1 is the stereogram of the propeller type fan representing embodiments of the present invention 1 from downstream side.
Fig. 2 is the side view of the propeller type fan of present embodiment 1.
Fig. 3 is the figure of the air-flow on the hub outer circumferential face of the propeller type fan that present embodiment 1 is described.
Fig. 4 is the figure of the air-flow illustrated by the gap on the hub outer circumferential face of the propeller type fan of present embodiment 1.
Fig. 5 relates to embodiments of the present invention 2, is the figure of the setting position in the gap illustrated on hub outer circumferential face.
Fig. 6 relates to embodiments of the present invention 3, is the figure of the setting position in the gap illustrated on hub outer circumferential face.
Fig. 7 relates to embodiments of the present invention 4, is the figure of the setting position in the gap illustrated on hub outer circumferential face.
Fig. 8 relates to embodiments of the present invention 5, is the figure of the shape in the gap illustrated on hub outer circumferential face.
Fig. 9 relates to embodiments of the present invention 6, is the figure of the shape in the gap illustrated on hub outer circumferential face.
Figure 10 is the figure of the interlobate air-flow illustrated by the propeller type fan as comparative example.
Figure 11 observes the stereogram during outdoor unit of embodiments of the present invention 7 from blow-off outlet side.
Figure 12 relates to present embodiment 7, is the figure of the structure for outdoor unit is described from top side.
Figure 13 relates to present embodiment 7, is the figure representing the state having pulled down fan grill.
Figure 14 relates to present embodiment 7, is the figure removing front panel etc. further and represent internal structure.
Embodiment
Below, the mode of execution of propeller type fan of the present invention is described based on accompanying drawing.In addition, in the accompanying drawings, same reference numerals represents identical or corresponding part.
Mode of execution 1
Fig. 1 is the stereogram of the propeller type fan representing embodiments of the present invention 1 from downstream side.Fig. 2, Fig. 3 and Fig. 4 are the side view of propeller type fan, the figure that the air-flow on hub outer circumferential face is described and the explanation figure by the air-flow in gap respectively.Propeller type fan 1 has hub portion 3 and multiple blade 5.
Hub portion 3 has cylindric barrel 3a.Central part 3b in hub portion 3 connects the output shaft of the driving sources such as motor, and propeller type fan 1 utilizes the driving force of this driving source to rotate.In addition, reference character RD in Fig. 1 represents the sense of rotation of propeller type fan 1, reference character RA in Fig. 2 represents the spin axis of propeller type fan 1, and reference character US schematically shows the air-flow of upstream, and reference character DS schematically shows the air-flow in downstream.
Best as shown in Figure 4, the downstream of the barrel 3a in hub portion 3 is closed by ceiling plate portion 3c.On the other hand, the upstream extremity of the barrel 3a in hub portion 3 is open, thus, and the inside in hub portion 3 and the ft connection in hub portion 3.
Multiple blade 5 radially extends from the outer circumferential face 3d of the barrel 3a in hub portion 3.In addition, mutually shape is identical and arrange with identical interval for multiple blade 5.Blade 5 has outer periphery 5a, blade root base portion 5b, leading edge 5c, trailing edge 5d, pressure surface 5e and suction surface 5f respectively.
Outer periphery 5a is the edge of the radial outside of blade 5, and is the edge extended in the circumferential.On the contrary, blade root base portion 5b is the part that blade 5 is connected with the outer circumferential face 3d in hub portion 3.Leading edge 5c is the edge connecting the front end of outer periphery 5a and the front end of blade root base portion 5b, and is the edge of the sense of rotation front side of propeller type fan 1.Similarly, trailing edge 5d is the edge connecting the rear end of outer periphery 5a and the rear end of blade root base portion 5b, and is the edge of the sense of rotation rear side of propeller type fan 1.In the construction illustrated, leading edge 5c and trailing edge 5d all bends to and is more located sense of rotation front toward radial outside.
See with overlooking, the blade face of pressure surface 5e and suction surface 5f all for being delimited by outer periphery 5a, blade root base portion 5b, leading edge 5c and trailing edge 5d.Pressure surface 5e and suction surface 5f is in positive and negative relation mutually.Pressure surface 5e is the blade face in the downstream side of the air-flow produced due to the rotation of propeller type fan 1, and suction surface 5f is the blade face of the upstream side of this air-flow.In addition, in the construction illustrated, pressure surface 5e is towards the concave surface in downstream side, and suction surface 5f is towards the convex surface of upstream side.
Between adjacent a pair blade 5 on the outer circumferential face 3d in hub portion 3, be provided with Secondary Flow and control gap 7.Best as shown in Figure 4, outer circumferential face 3d multiple Secondary Flows on the whole in hub portion 3 control the barrel 3a in each through hub portion 3 in gap 7, and are communicated with the inside in hub portion 3 and the outside in hub portion 3.
In addition, best as shown in Figure 2, when observing from the side, each of multiple Secondary Flow control gap 7 extends obliquely relative to the spin axis RA of propeller type fan, and tiltedly extends in the direction updip that the formation direction of the blade root base portion 5b with multiple blade 5 is identical.In the construction illustrated, from the side, Secondary Flow controls gap 7 and extends point-blank respectively, and is inclined to the front side more in the sense of rotation of propeller type fan, is located the upstream side of air-flow.
Then, the air-supply action of the propeller type fan of present embodiment 1 is described.First, based on Figure 10, illustrate do not have feature of the present invention, as the flowing on the propeller type fan of comparative example.At the radial central part of blade 55, as shown in arrow F3, the air-flow flowing into propeller type fan from upstream side is dynamic along blade 55 to downstream effluent.On the other hand, on the outer circumferential face in hub portion 53, as shown in arrow F4, flow into the air-flow of propeller type fan near the leading edge 55c of the pressure surface 55e from blade 55 after the suction surface 55f of adjacent blade 55 from upstream side, become whirlpool ground to move to downstream effluent.
That is, at interlobate radial central part, owing to balancing at the geostrophic force acted on inversely with sense of rotation with from the pressure surface 55e of blade 55 to the pressure gradient of the suction surface 55f of adjacent blade 55, interlobate air-flow forms the flowing along blade 55.But, the outer circumferential face of existence throughout hub portion 53 of above-mentioned pressure gradient, and in the boundary layer of the outer circumferential face in hub portion 53, the relative velocity of air-flow is little, so geostrophic force diminishes.Therefore, due to the impact of above-mentioned pressure gradient, produce towards the Secondary Flow of the suction surface of adjacent blades.Because this Secondary Flow and suction surface collide, produce whirlpool.
And on the other hand, in present embodiment 1, the upstream face in hub portion 3 is open, the inside in hub portion 3 and the upstream side communication of propeller type fan 1, the outer circumferential face in hub portion 3 is provided with cross the inside and outside Secondary Flow control gap 7 that interlobate mode connects hub portion 3.Therefore, when the pressure of the inside in interlobate pressure ratio hub portion 3 is high, as shown in the arrow F1 of solid line in Fig. 3 and Fig. 4, Secondary Flow controls gap 7 by the Secondary Flow on the outer circumferential face 3d in hub portion 3 and is inhaled into the inside in hub portion 3.Because Secondary Flow is inhaled into the inside in hub portion 3, thus the air-flow to suction surface 5f flowing can be suppressed, thereby, it is possible to suppress the disorder of the air-flow caused by the generation of whirlpool.On the contrary, when the pressure of the inside in interlobate pressure ratio hub portion 3 is low, as shown in the arrow F2 of dotted line in Fig. 3 and Fig. 4, produce from the inside in hub portion 3, controlled the air-flow externally flowed out in gap 7 by the Secondary Flow on the outer circumferential face 3d in hub portion 3.Due to this air-flow, Secondary Flow, from the boundary layer separation the outer circumferential face 3d in hub portion 3, so can suppress the air-flow flowed to suction surface 5f, can suppress the disorder of the air-flow caused by the generation of whirlpool.
In addition, because Secondary Flow controls the spin axis RA of gap 7 relative to propeller type fan in the direction surface thereof identical with blade 5, so, the effect that Secondary Flow controls to bring the air-flow being parallel to blade 5 in gap 7 can be reduced, and, by becoming right angle relative to Secondary Flow, the inhibition that above-mentioned whirlpool produces can be strengthened.
As mentioned above, according to the propeller type fan of mode of execution 1, the whirlpool that Secondary Flow can be utilized to control gap suppress to produce at the joint of blade and hub, and realize the low noise of fan.In addition, thus, owing to not depending on the setting of the camber ratio of the blade near blade root base portion, while making all effectively to do work near blade root base portion, the generation of whirlpool can also be suppressed.
Mode of execution 2
Fig. 5 relates to embodiments of the present invention 2, is the figure of the setting position in the gap illustrated on hub outer circumferential face.Fig. 5 represents the state of the outer circumferential face 3d partly expanding hub portion 3, in the figure, illustrates the blade root base portion 5b of a pair blade 5 and the Secondary Flow control gap 107 between them.
In Figure 5, the imaginary line VL2 of the connection multiple trailing edge 5d on the imaginary line VL1 of the multiple leading edge 5c of connection on the imagination position of blade root base portion 5b, the position of blade root base portion 5b.In present embodiment 2, Secondary Flow controls gap 107 and is arranged in the scope between imaginary line VL1 and imaginary line VL2.In addition, other features that Secondary Flow controls gap 107 also can to control gap 7 identical with the Secondary Flow of above-mentioned mode of execution 1.
In the same manner as above-mentioned mode of execution 1, in present embodiment 2, also can suppress the whirlpool produced at the joint of blade and hub, realize the low noise of fan.Particularly in present embodiment 2, control gap owing to being restrictively provided with Secondary Flow in the scope that interlobate pressure gradient produces greatly and easily Secondary Flow, while reducing the impact on main flow, the generation of whirlpool can be suppressed.
Mode of execution 3
Fig. 6 relates to embodiments of the present invention 3, is the figure of the setting position in the gap illustrated on hub outer circumferential face, is and the figure of Fig. 5 with form.In figure 6, on the basis of imaginary line VL1, the VL2 identical with Fig. 5, further imagination extends past the imaginary line VL3 in the neutral position in the circumference of a pair adjacent blade (blade root base portion 5b).More specifically, imaginary line VL3 is that the scope of trailing edge from the leading edge of a pair blade to a pair blade connects mid point in the circumference of a pair mean camber line (vane thickness center line) CL a pair adjacent blade and the line obtained.
In present embodiment 3, Secondary Flow controls to extend in the scope of gap 207 between imaginary line VL1 and imaginary line VL2, and is configured in compared with imaginary line VL3 in the region of the so-called front side on the sense of rotation RD of propeller type fan.In addition, other features that Secondary Flow controls gap 207 also can to control gap 7 identical with the Secondary Flow of above-mentioned mode of execution 1.
In present embodiment 3, also can obtain the advantage identical with above-mentioned mode of execution 2.And, in present embodiment 3, be arranged on position (that is, compared with pressure surface 5e closer to the position of suction surface 5f) close to the strongest suction surface 5f of Secondary Flow because Secondary Flow controls gap 207, the effect of the suppression to Secondary Flow can be obtained significantly.
Mode of execution 4
Fig. 7 relates to embodiments of the present invention 4, is the figure of the setting position in the gap illustrated on hub outer circumferential face, is and the figure of Fig. 5 with form.In the figure 7, on the basis of imaginary line VL1, VL2, the VL3 identical with Fig. 6, further imagination imaginary line VL4, VL5.
First, in the figure 7, imaginary line VL4 is positioned at the line with a pair imaginary line VL1, VL2 equidistant, in other words, is the line in the neutral position extended past on the spin axis direction of a pair imaginary line VL1, VL2, propeller type fan.In addition, in the figure 7, by in a pair blade 5 of correspondence, the intersection point of mean camber line (vane thickness center line) CL and imaginary line VL4 of the blade 5 of so-called front side on the sense of rotation RD of propeller type fan be set to P time, using the line segment imagination of the intersection point P of the blade 5 of the leading edge 5c and corresponding front side that connect the blade 5 of corresponding rear side as imaginary line VL5.
And, in present embodiment 4, Secondary Flow controls to extend in the scope of gap 307 between imaginary line VL1 and imaginary line VL2, and be configured in compared with imaginary line VL3 in the region of the so-called front side on the sense of rotation RD of propeller type fan, and be configured in compared with imaginary line VL5 in the region of the so-called rear side on the sense of rotation RD of propeller type fan.In other words, in the figure 7, Secondary Flow controls gap 307 and is configured in the region that surrounded by the blade 5 of the so-called front side on the sense of rotation RD of the propeller type fan in a pair blade 5 of imaginary line VL2, imaginary line VL3, imaginary line VL5 and correspondence.In addition, other features that Secondary Flow controls gap 207 also can to control gap 7 identical with the Secondary Flow of above-mentioned mode of execution 1.
In present embodiment 4, also can obtain the advantage identical with above-mentioned mode of execution 3.And, tool has the following advantages, near the leading edge from the hub portion joint on the blade of rear side, near the mid point of the frontier and rear of the blade of adjacent front side to trailing edge, extremely easily produce the place of Secondary Flow, in present embodiment 4, extremely easily produce in the region of Secondary Flow this, more concentrated area obtains controlling the effect that brings of gap by Secondary Flow.
Mode of execution 5
Fig. 8 relates to embodiments of the present invention 5, is the figure of the setting position in the gap illustrated on hub outer circumferential face, is and the figure of Fig. 5 with form.As shown in Figure 8, the Secondary Flow in present embodiment 5 controls gap 407 extension becomes parallel with the radian of blade 5.Particularly, the Secondary Flow control gap 407 of Fig. 8 is the determinate further example in present embodiment 5, the configuration in gap is controlled (in fig. 8 at the Secondary Flow of above-mentioned mode of execution 4, imaginary line and intersection point omit diagram) in, make it further bend to parallel with the radian of blade 5 and formed.In addition, the Secondary Flow control gap that present embodiment 5 relates to is that the Secondary Flow of any one in above-mentioned mode of execution 1 ~ 4 controls to extend in gap to become the gap parallel with the radian of blade, might not be defined in the shown position of Fig. 8.
In present embodiment 5, also at least obtain the advantage identical with above-mentioned mode of execution 1, and due to Secondary Flow control gap also parallel relative to the main flow of interlobate air-flow, so, the impact that main flow is brought can be reduced.
Mode of execution 6
Fig. 9 relates to embodiments of the present invention 6, is the figure of the setting position in the gap illustrated on hub outer circumferential face, is and the figure of Fig. 5 with form.As shown in Figure 9, relative to the blade pitgh in the circumference of a pair blade 5 of correspondence from L, the Secondary Flow in present embodiment 6 controls gap 507 and extends with the width of below L/10 (size on the direction orthogonal with gap extending direction).In addition, Secondary Flow controls other structures in gap 507 and is set to that to control gap with the Secondary Flow of any one in above-mentioned mode of execution 1 ~ 5 identical.
In present embodiment 6, also at least obtaining the advantage identical with above-mentioned mode of execution 1, in addition, by increasing the air-flow being controlled gap by Secondary Flow, the impact that main flow is brought can be reduced.
Mode of execution 7
Figure 11 observes stereogram during outdoor unit (blast device) of present embodiment 7 from blow-off outlet side, Figure 12 is the figure of the structure for outdoor unit is described from top side.In addition, Figure 13 represents the state having pulled down fan grill, and Figure 14 is the figure removing front panel etc. further and represent internal structure.
As shown in Figure 11 ~ 14, outdoor unit main body (housing) 51 is configured to the framework with pairing left and right side 51a, 51c, front surface 51b, back side 51d, upper surface 51e and bottom surface 51f.In order to suck air (arrow A with reference to Figure 12) from outside, side 51a and back side 51d has open part.In addition, at front surface 51b, front panel 52 is formed for externally blow out air (arrow A with reference to Figure 12), as the blow-off outlet 53 of open part.Further, blow-off outlet 53 is covered by fan grill 54, thus, prevents object etc. contact with propeller type fan 1 and realize safety.
Propeller type fan 1 is provided with in outdoor unit main body 51.Propeller type fan 1 is the propeller type fan of any one in above-mentioned mode of execution 1 ~ 6.Propeller type fan 1 is connected with the fan electromotor (driving source) 61 being in 51d side, the back side via running shaft 62, and by this fan electromotor 61 rotary actuation.
The inside of outdoor unit main body 51 is divided into accommodation by dividing plate (wall body) 51g, be provided with the wind-supplying chamber 56 of propeller type fan 1 and be provided with the machine room 57 of compressor 64 etc.When overlooking, the 51a side, side in wind-supplying chamber 56 and 51d side, the back side are provided with the heat exchanger 68 in roughly L-shaped extension.
Outside the radial direction of the propeller type fan 1 be configured in wind-supplying chamber 56, be configured with horn mouth 63.Horn mouth 63 is more positioned at outside compared with the outer circumference end of blade 5, and is formed as ring-type along the sense of rotation of propeller type fan 1.In addition, dividing plate 51g is set in the side (being right on the paper of Figure 12) of a side side of horn mouth 63, a part for heat exchanger 68 is set in the side (being left on the paper of Figure 12) of the opposing party side (opposite direction) of horn mouth 63.
The front end of horn mouth 63 is connected with the front panel 52 of the mode with outdoor unit of surrounding the periphery of blow-off outlet 53.In addition, horn mouth 63 both can be formed with front panel 52 integratedly, or also can prepare as being separated and the parts be formed by connecting.Utilize this horn mouth 63, the stream between the suction side of horn mouth 63 and blowout side forms the wind path near as blow-off outlet 53.That is, the wind path near blow-off outlet 3 is divided into other spaces in wind-supplying chamber 56 by horn mouth 63.
The heat exchanger 68 being arranged on the suction side of propeller type fan 1 has: be arranged side by side into the parallel multiple fin in the face of tabular and be arranged side by side the heat-transfer pipe of through each fin on direction at this.Circulate the refrigeration agent circulated in refrigerant circuit in heat-transfer pipe.The heat-transfer pipe of the heat exchanger 68 of present embodiment extends in L-shaped on the side 51a and back side 51d of outdoor unit main body 51, and as shown in figure 14, multistage heat-transfer pipe is configured to through fin warpage on one side.In addition, heat exchanger 68 is connected with compressor 64 via pipeline 65 grade, and is connected with diagram abridged indoor heat exchanger, expansion valve etc. and forms the refrigerant circuit of aircondition.In addition, in machine room 7, be configured with substrate box 66, controlled the equipment be mounted in outdoor unit by the control substrate 67 be arranged in this substrate box 66.
In present embodiment 7, also can obtain the advantage identical with corresponding above-mentioned mode of execution 1 ~ 6.
In addition, as the outdoor unit comprising blast device, present embodiment 7 is illustrated for the outdoor unit of aircondition, but the present invention is not limited to this, such as also can implement as the outdoor unit of water heater etc., and the device can applied widely as carrying out blowing, also can be applied in the device, equipment etc. beyond outdoor unit.
Specifically illustrate content of the present invention with reference to preferred implementation above, but those skilled in the art can obtain various variant based on basic fundamental thought of the present invention and instruction certainly.In addition, the present invention can be widely used in the such as outdoor unit of gas fan, air conditioner, water heater etc., the heat exchanger of refrigeration cycle etc.
Description of reference numerals
1 propeller type fan, 3 hub portions, 3a barrel, 3d outer circumferential face, 5 blades, 7,107,207,307,407,507 Secondary Flows control gap, 51 outdoor unit main body (housing), 61 fan electromotors (driving source), 68 heat exchangers.
Claims (8)
1. a propeller type fan, has:
Hub portion, described hub portion has barrel; And
Multiple blade, described multiple blade radially extends from the outer circumferential face of the described barrel in described hub portion,
Described in adjacent a pair on described outer circumferential face between blade, be provided with Secondary Flow and control gap,
Multiple described Secondary Flow controls gap through described barrel respectively, and is communicated with the inside in described hub portion and the outside in this hub portion,
The downstream of described barrel is closed, and the upstream extremity of this barrel is open,
When observing from the side, multiple described Secondary Flow controls gap and extends obliquely relative to the spin axis of this propeller type fan respectively, and tiltedly extends in the direction updip that the formation direction of the blade root base portion with described multiple blade is identical.
2. propeller type fan according to claim 1, is characterized in that,
By on the position of the blade root base portion of described blade, the imaginary line that connects multiple leading edge is set to VL1, when the imaginary line connecting multiple trailing edge is set to VL2, described Secondary Flow controls gap and is separately positioned in the scope between imaginary line VL1 and imaginary line VL2.
3. propeller type fan according to claim 2, is characterized in that,
When the imaginary line in the neutral position extending past a pair adjacent described blade is set to VL3, described Secondary Flow controls that gap is configured in respectively compared with imaginary line VL3, in the region of front side in the sense of rotation of propeller type fan.
4. propeller type fan according to claim 3, is characterized in that,
Imaginary line VL4 is set to the line of imaginary line VL1, VL2 equidistant described in a pair by being positioned at,
By in blade described in a pair of correspondence, the intersection point of mean camber line on the described blade of front side in the sense of rotation of propeller type fan and described imaginary line VL4 be set to P time, imaginary line VL5 is set to the line segment of the described intersection point P of the blade of corresponding front side by connecting the corresponding leading edge of blade of rear side, now
Described Secondary Flow controls that gap is configured in respectively compared with described imaginary line VL5, in the region of rear side in the sense of rotation of propeller type fan.
5. the propeller type fan according to any one in Claims 1-4, is characterized in that,
Described Secondary Flow controls gap and extends into parallel with the radian of described multiple blade respectively.
6. the propeller type fan according to any one in claim 1 to 5, is characterized in that,
Relative to the blade pitgh in the circumference of a pair blade of correspondence from L, described Secondary Flow controls gap and extends with the width of below L/10 respectively.
7. a blast device, has:
The propeller type fan of any one in claim 1 to 6;
The driving source of driving force is given to described propeller type fan; And
Hold the housing of described propeller type fan and described driving source.
8. an outdoor unit, has:
Heat exchanger;
The propeller type fan of any one in claim 1 to 6;
The driving source of driving force is given to described propeller type fan; And
Hold the housing of described propeller type fan, described driving source and described heat exchanger.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2012/075656 WO2014054132A1 (en) | 2012-10-03 | 2012-10-03 | Propeller fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104685218A true CN104685218A (en) | 2015-06-03 |
| CN104685218B CN104685218B (en) | 2018-03-16 |
Family
ID=50434493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280076216.5A Active CN104685218B (en) | 2012-10-03 | 2012-10-03 | Propeller type fan |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20150204345A1 (en) |
| EP (1) | EP2905474B1 (en) |
| JP (1) | JP5984162B2 (en) |
| CN (1) | CN104685218B (en) |
| WO (1) | WO2014054132A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110945250A (en) * | 2017-08-09 | 2020-03-31 | 三菱电机株式会社 | Propeller fan, air supply device, and refrigeration cycle device |
| CN111692128A (en) * | 2020-05-21 | 2020-09-22 | 西安交通大学 | Structure is handled to transonic compressor combination machine casket |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD910834S1 (en) * | 2018-12-05 | 2021-02-16 | Asia Vital Components Co., Ltd. | Impeller for a fan |
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| CN202326418U (en) * | 2011-12-09 | 2012-07-11 | 温州车舟汽车部件有限公司 | Hub opening high-efficient diversion internal combustion engine cooling fan |
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- 2012-10-03 EP EP12886000.4A patent/EP2905474B1/en active Active
- 2012-10-03 CN CN201280076216.5A patent/CN104685218B/en active Active
- 2012-10-03 JP JP2014539524A patent/JP5984162B2/en active Active
- 2012-10-03 WO PCT/JP2012/075656 patent/WO2014054132A1/en active Application Filing
- 2012-10-03 US US14/423,495 patent/US20150204345A1/en not_active Abandoned
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| US3385516A (en) * | 1966-03-31 | 1968-05-28 | Gen Electric | Fan construction |
| US4150919A (en) * | 1977-06-10 | 1979-04-24 | Wallace Murray Corporation | Radiator cooling fan construction |
| JPS6357896A (en) * | 1986-08-29 | 1988-03-12 | Oriental Motor Co Ltd | Axial blower |
| JPH0431697A (en) * | 1990-05-24 | 1992-02-03 | Seiko Epson Corp | Vane structure of axial flow blower |
| US6158985A (en) * | 1998-10-07 | 2000-12-12 | Sanyo Denki Co., Ltd. | Air fan including waterproof structure |
| CN1813136A (en) * | 2003-04-28 | 2006-08-02 | 罗伯特·博世公司 | Automotive engine-cooling fan assembly |
| CN1616832A (en) * | 2003-11-10 | 2005-05-18 | 东芝开利株式会社 | Propeller type fan and outdoor unit of air conditioner using said fan |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110945250A (en) * | 2017-08-09 | 2020-03-31 | 三菱电机株式会社 | Propeller fan, air supply device, and refrigeration cycle device |
| CN111692128A (en) * | 2020-05-21 | 2020-09-22 | 西安交通大学 | Structure is handled to transonic compressor combination machine casket |
| CN111692128B (en) * | 2020-05-21 | 2021-12-10 | 西安交通大学 | Structure is handled to transonic compressor combination machine casket |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2905474B1 (en) | 2019-08-28 |
| EP2905474A4 (en) | 2016-07-06 |
| JPWO2014054132A1 (en) | 2016-08-25 |
| EP2905474A1 (en) | 2015-08-12 |
| WO2014054132A1 (en) | 2014-04-10 |
| US20150204345A1 (en) | 2015-07-23 |
| CN104685218B (en) | 2018-03-16 |
| JP5984162B2 (en) | 2016-09-06 |
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