CN1294266A - Centrifugal blower and air conditioning appts. - Google Patents
Centrifugal blower and air conditioning appts. Download PDFInfo
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- CN1294266A CN1294266A CN00124088A CN00124088A CN1294266A CN 1294266 A CN1294266 A CN 1294266A CN 00124088 A CN00124088 A CN 00124088A CN 00124088 A CN00124088 A CN 00124088A CN 1294266 A CN1294266 A CN 1294266A
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- centrifugal blower
- horn mouth
- heavy section
- forms
- blower according
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0022—Centrifugal or radial fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
Abstract
A centrifugal blower, wherein, a bell mouth with impellers, is provided with a curved part which forms an outlet in the center of a flat part. The diameter of the middle part is minimum, and smaller than the diameter of the open end. The curved part is connected with flat plate parts through a projected part projecting from the flat plate parts to an air inlet side and the impeller side surfaces of the projected part and the flat plate parts are formed flush with each other so as to form the projected part at a thick wall part. The bell mouth is a molding of the synthetic resin. And slits as a shrinkage prevention part preventing a shrinkage from occurring at the time of forming are provided in the thick wall part so that the bell mouth can be formed accurately with a simple metal mold structure.
Description
The present invention relates to centrifugal blower and have the aircondition of this centrifugal blower, relate in particular to the bell-mouthed structure that is arranged on the centrifugal blower air sucking side.
Traditional centrifugal blowers such as turbofan blow out the air through overregulating in being used for the indoor air suction device in overhead ceiling type air conditioner device (opening shown in the flat 10-1849591 communique as the spy) and overhead embedded air conditioner (opening shown in the flat 11-223380 communique as the spy) again to indoor.
Figure 11 is the schematic sectional view of this aircondition 50.As shown in the figure, this aircondition 50 is provided with machines such as turbofan 52 and heat exchanger 53 in the housing 51 of box-shaped.In the bottom of housing 51 not shown decoration panel is housed, forms air suction inlet 54a and air blow-off outlet 54b.And after this aircondition 50 will make temperature regulation by heat exchanger 53 from the indoor air that air suction inlet 54a sucks along with the driving of turbofan 52, blow out to indoor from each air blow-off outlet 54b.
In the suction side of the impeller 55 of turbofan 52, be provided with horn mouth 56 to this impeller 55 guiding indoor airs.Horn mouth 56 has in the central authorities that open and close board 56a that to bend to the cross section be circular-arc curved part 56b, and 56b constitutes opening 56c by this curved part.As everyone knows, when the curved part 56b of horn mouth 56 as shown in the figure, dwindled its diameter from the inlet side of air before this to outlet side, and then amplified slightly, during flare, just can alleviate air-supply noise (see reality open flat 1-80697 communique).
On the other hand, be that the suction side of turbofan 52 becomes low voltage side in the housing 51 of aircondition 50, become the high pressure side and blow out side.Therefore, in case various parts such as the high pressure side part configuration electric parts above the plat part 56a of horn mouth 56, the opening portion of maintenance usefulness and the lid of this opening portion of sealing will be set, and this lid must have the structure of reliable sealing, cause complex structure, cost to rise, and the maintenance of its part self is also difficult.Therefore, part 57 grades that need repairing preferably are configured in the low voltage side of the plat part 56a below of horn mouth 56, just can easily regulate as long as take off decoration panel like this.
In order can so disposing, when product specification, preferably shown in the dotted line of Figure 11, the local 56d of the plat part 56a of horn mouth 56 upwards to be lifted, or shown in the horn section enlarged view of Figure 12, the relative curved part 56b of whole plat part 56a is upwards lifted.Yet, consider that horn mouth 56 is not to process with sheet metal, but make by ester moulding, as adopt above-mentioned shape, will become the structure that formed article (horn mouth 56) and metal mould for formation are packed into mutually, thus just can not be with simple metal pattern structure with the formed article demoulding of horn mouth 56, and for can the demoulding, the metal pattern structure must be very complicated, can cause cost to rise so again.
At this problem, if image pattern 13 prolongs the upper side of plat part 56a, 56d and make to curved part 56b one side the partial thickening of the curved part 56b that forms horn mouth 56 like that, even then the metal pattern structure is uncomplicated, also can the demoulding, but this shape can produce pore (pore vestige) at heavy section (56e) when being shaped, and may cause the formed article distortion of horn mouth 56 sometimes.And if adopt shape shown in Figure 12, if then horn mouth 56 can be divided into a plurality of parts and, then can be shaped, but in this occasion, because the increase in part management and assembling man-hour can cause cost to rise again with the assembling of these parts.
The present invention is just in order to address the above problem, its purpose is, at centrifugal blower and use on the aircondition of this centrifugal blower, can be the horn mouth that horn-like expansion is opened with simple metal pattern structure highi degree of accuracy, outlet end one side of producing curved part with ester moulding at low cost.
The present invention can carry out the demoulding easily at the bell-mouthed local heavy section that forms under the prerequisite that does not make the metal pattern structure complicated, form pore at this heavy section simultaneously and prevent portion, forms pore when preventing to be shaped.
Concrete scheme of the present invention is a kind of centrifugal blower 3, have impeller 4 and horn mouth 6, this horn mouth 6 has at plat part 6a, the substantial middle of 6e constitutes the curved part 6b of opening 6c, the intermediate portion diameter minimum of the curved part 6b of this horn mouth 6, the diameter of opening end is greater than this intermediate portion, be characterized in, curved part 6b is passed through than plat part 6a, the bump 6g that 6e more protrudes to air inlet one side and with plat part 6a, 6e connects, on the other hand, bump 6g and plat part 6a, the face by impeller 4 one sides of 6e roughly becomes a plane mutually, makes this bump 6g become heavy section 6h.In addition, horn mouth 6 is formed article of synthetic resin, and heavy section 6h is provided with the pore that produces pore when preventing to be shaped and prevents the 6i of portion, 6j, 6k, 6l.
In said structure, part at plat part 6a, 6e forms the depressed part 6d that caves in to impeller 4 one sides, curved part 6b is connected with the 2nd plat part 6e of the base plate that constitutes this depressed part 6d through bump 6g, this bump 6g forms heavy section 6h, at this heavy section 6h pore is set simultaneously and prevents the 6i of portion, 6j, 6k, 6l.
When centrifugal blower 3 commercialization that make said structure, bump 6g exceeds plat part 6a, 6e and is of a size of 2～10mm, preferably exceeds 8mm, and the protrusion width is 5～20mm, preferably 15mm.
In addition, in said structure, pore prevent the 6i of portion, 6j, 6k, 6l can by heavy section 6h by being that the center is the radial slit 6i that forms and constitutes with the opening 6c of horn mouth 6 on the face of air inlet one side, or by being that the slit 6j that centres ground forms constitutes by the opening 6c with horn mouth 6 on the face of air inlet one side at heavy section 6h, or by at the constituting of heavy section 6h, or constitute by heavy section 6h being configured as the hollow portion 6l that hollow shape forms by being dispersed in a plurality of recess 6k that form on the face of air inlet one side.
When pore prevent the 6i of portion, 6j, 6k, 6l by heavy section 6h by being center when being the radial slit 6i that forms and constituting with the opening 6c of horn mouth 6 on the face of air inlet one side, this slit 6i on heavy section 6h with the opening 6c of horn mouth 6 be the center, with 1.5 °～2.0 ° intervals, preferably be radial formation with 1.8 ° interval.
In addition, slit 6i is predetermined angular not also, but forms along the circumferencial direction of the heavy section 6h interval with about 3.5mm, and in this occasion, heavy section 6h can make the top width a because of each chevron body that slit 6i forms between each slit 6i is set be approximately 2mm.
In addition, slit 6i is predetermined angular and at interval not also, but the regulation number, specifically, is center when forming heavy section 6h in about 150 ° scope at the opening portion 6c with horn mouth 6 exactly, can form the 82 slit 6i of place.
In addition, aircondition 1 of the present invention is provided with air suction inlet 9a at the downside central part of housing 2, around it, be provided with air blow-off outlet 9b, in this housing 2, dispose centrifugal blower 3 simultaneously and be positioned at this centrifugal blower 3 heat exchanger 7 on every side, be characterized in, with the horn mouth 6 corresponding air suction inlet 9a configurations of the centrifugal blower 3 of above-mentioned each scheme.
Adopt such scheme, the curved part 6b of horn mouth 6 is connected with whole plat part 6a or as the 2nd plat part 6e of its part through bump 6g.And, because this bump 6g forms heavy section 6h, thus when horn mouth 6 is carried out ester moulding, can not pack into mutually as the horn mouth 6 and the metal mould for formation of formed article, so even simple metal pattern also can be finished the demoulding of formed article 6.Therefore, will not be divided into a plurality of parts by horn mouth 6.
In addition, as pore prevent the 6i of portion, 6j, 6k, 6l be heavy section 6h by radial or concentric shape slit 6i and the 6j that opening 6c with horn mouth 6 is formed centrally in being is set on the face of air inlet one side, or this heavy section 6h by being dispersed in a plurality of recess 6k of formation on the face of air inlet one side, or by heavy section 6h being configured as the hollow portion 6l that hollow shape forms, so when horn mouth 6 is carried out ester moulding, can on heavy section 6h, not produce pore.
Thereby, adopt such scheme, at centrifugal blower 3 and use horn mouth 6 used in the aircondition 1 of this centrifugal blower 3 easily to carry out unitary moulding, so can avoid causing cost to rise because of adopting complicated metal pattern structure or cutting apart part with simple metal pattern structure.In addition,, compare, can reduce manufacture cost with the occasion of processing horn mouth 6 with sheet metal because usable resins is shaped.
In addition, in order to simplify the metal pattern structure, heavy section 6h is set in the part of horn mouth 6, and form pore at this heavy section and prevent the 6i of portion, 6j, 6k, 6l, pore can be do not produced during shaping,, the good resin system horn mouth 6 of accuracy to shape can be produced so the formed article of horn mouth 6 can not deform.Have, bump 6g and prevent that as pore the size of the slit 6i etc. of portion from being specific is so realize being suitable for the structure of commercialization easily again.
And, owing to can form trumpet-shaped horn mouth 6 with resin accurately, and the curved part 6b of this horn mouth 6 outlet side from the air inlet side direction to narrow down to behind the minimum diameter enlarged once again, so the low-cost horn mouth 6 that has reduced the air-supply noise can be used for centrifugal blower 3 and aircondition 1, can reduce the cost of device.
Simple declaration to accompanying drawing
Fig. 1 is the sectional view of the aircondition of the invention process form.
Fig. 2 is the bell-mouthed stereogram that uses in the aircondition of Fig. 1.
Fig. 3 is bell-mouthed local amplification view.
Fig. 4 is the worm's eye view of Fig. 3.
Fig. 5 is the sectional view along V among Fig. 4-V line.
Fig. 6 is the local amplification view of horn mouth of the 1st variation of presentation graphs 3.
Fig. 7 is the worm's eye view of Fig. 6.
Fig. 8 is the local amplification view of horn mouth of the 2nd variation of presentation graphs 3.
Fig. 9 is the worm's eye view of Fig. 8.
Figure 10 is the local amplification view of horn mouth of the 3rd variation of presentation graphs 3.
Figure 11 is the schematic sectional view of the traditional aircondition general configuration of expression.
Figure 12 is a bell-mouthed local amplification view used in the aircondition of Figure 11.
Figure 13 makes the sectional view that can carry out the structure of ester moulding with the horn mouth of Figure 12.
Describe example of the present invention in detail below in conjunction with accompanying drawing.
As shown in Figure 1, this example is an overhead embedded air conditioner 1.This aircondition 1 inserts and is disposed among the opening H that forms on ceiling board R, and the sheet metal system housing 2 that the below is opened wide is installed in the ceiling board backside space S.The side plate 2b that this housing 2 has top board 2a and extends downwards from the peripheral portion of this top board 2a, various machines are equipped with in its inside.Each machine below is described.
Is furnished with turbofan 3 as centrifugal blower at the central part of housing 2.This turbofan 3 is made of impeller 4 and fan motor 6 and horn mouth 6.Impeller 4 keeps blade 4c between guard shield 4a and wheel hub 4b, the central part of wheel hub 4b directly is connected with the live axle underpart of the fan motor 5 that disposes the central part that is fixed in housing 2.In addition, follow the driving of this fan motor 5 and rotate, will blow out to radial outside from the downside inhaled air owing to blade 4.
Horn mouth 6 is configured in the downside of the horn mouth 4 of this turbofan 3, so that indoor air is guided to this impeller 4.The horn mouth 6 of this example is plastic formed article, as shown in Figure 1, is provided with in the substantial middle portion of plat part 6a and bends to circular-arc curved part 6b, and 6b constitutes opening 6c by this curved part.Curved part 6b increases after opening diameter being dwindled gradually towards outlet side from the inlet side of air more gradually, and the result forms intermediate portion diameter minimum, then towards the horn shape of the end enlarged of outlet side.
Fig. 2 is a stereogram of seeing horn mouth 6 from below, and Fig. 3 is the major component sectional view of horn mouth 6, and Fig. 4 is the worm's eye view of Fig. 3, and Fig. 5 is the sectional view along V-V line among Fig. 4.As shown in the figure, on the horn mouth 6 of this example, the regulation zone (this example is to be about 150 ° zone at center with opening 6c) around the opening 6c of horn mouth 6 forms the depressed part 6d that optional electric parts (not shown) usefulness is installed.
This depressed part 6d comprises: by the part of the plat part 6a of horn mouth 6 to impeller 4 one sides sink abreast that the 2nd plat part 6e that the back forms erects with peripheral portion from this 2 plat part 6e and with the side plate 6f of above-mentioned plat part 6a (, being called the 1st plat part) connection for to distinguish mutually with the 2nd plat part 6e.As shown in Figure 3, curved part 6b is connected with the 2nd plat part 6e through bump 6g, relative the 2nd plat part 6e of this bump 6g and protruding to air inlet side (among the figure below one side), on the other hand, bump 6g upper side (by the face of impeller 4 one sides) in the drawings roughly becomes same plane with the 2nd plat part 6e.Therefore, the bump 6g between curved part 6b and the 2nd plat part 6e is with regard to constituent ratio curved part 6b and the thick heavy section 6h of the 2nd planar surface portion 6e.
The inner diameter d of the opening 6c of horn mouth 6 is about 335mm in Fig. 3, and for the size with this opening 6c adapts, bump 6g is 8mm from the height dimension t that plat part 6a, 6e protrude, and protruding width dimensions w is 15mm.But, this size only is an example, and protrusion height size t can suitably change in the scope of 2～10mm, protrudes width dimensions w and also can suitably change in the scope of 5～20mm.
On this heavy section 6h, the pore that produces pore when preventing to be shaped prevents portion, is by forming a plurality of slit 6i that are radial configuration on the face of air sucking side (downside among the figure).This slit 6i forms with roughly certain interval in the gamut that is provided with heavy section 6h.Specifically, slit 6i is that the opening 6c with horn mouth 6 is the center, forms 82 with 1.8 ° intervals (seeing θ) on heavy section 6h, but this can suitably change in 1.5 °～2.0 ° scope at interval.
In addition, as shown in Figure 5, the width a of each mountain top end of slit 6i is about 2mm, and the width c of interval b between the top (heavy section 6h is at the interval of circumferencial direction) and cardinal extremity is respectively 3.5mm.When the specific design product, suitably select width a and the interval b of this slit 6i in the scope that can between good air flows and quiet air-supply sound, average out.
On the other hand, as shown in Figure 1, be provided with heat exchanger 7 in the outside of the impeller 4 of turbofan 3.This heat exchanger 7 is connected with not shown outdoor unit by refrigerant piping, plays a role as vaporizer when cooling operation, then plays a role as condenser when the warm running of system, and the air of deriving from turbofan 3 is carried out temperature regulation.In addition, the downside at heat exchanger 7 is provided with the draining drainage tray 8 that recovery is produced by this heat exchanger 7.
In the underpart of housing 2, be equipped with and overlook rectangular decoration panel 9.Central part at this decoration panel 9 forms the air suction inlet 9a that is made of rectangular aperture.In addition, at a plurality of positions (for example 4 places) of the lateral edge portion of decoration panel 9, each limit of corresponding decoration panel 9 forms air blow-off outlet 9b, 9b ...
Suction port 9a at decoration panel 9 is provided with air filter 9c, is used for removing the dust from this air suction inlet 9a inhaled air.In addition, the downside at air filter 9c is equipped with suction grid 9d.This sucks grid 9d portion's formation and suction port corresponding opening in the central, is provided with a plurality of horizontal stripe 9e in whole opening scope.Therefore, the indoor air that sucks in the housing 2 sucks in the housing 2 from whole suction grid by back between these horizontal stripes 9e.
Adopt said structure, form air ventilation path 10 to air blow-off outlet 9b from the air suction inlet 9a of decoration panel 9, air from the upstream in this air ventilation path 10 downstream successively by air filter 9c, horn mouth 6, impeller 4 and heat exchanger 7.
The below running action of the aircondition 1 of explanation said structure.During running, along with the driving of the fan motor 5 of turbofan 3, impeller 4 rotations, refrigeration agent flows through heat exchanger 7 simultaneously.Indoor air is sucked between the horizontal stripe 9e that sucks grid 9, and by air filter 9c the time, be removed dust, pass through heat exchanger 7 through turbofan 3 backs again.At this moment, carry out heat exchange between air and refrigeration agent, air becomes the adjusting air after being conditioned temperature when running (cooling during cooling operation, system warm heating), and from air blow-off outlet 9b to indoor supply.
In addition, in this example, the curved part 6b of horn mouth 6 is diameter minimums of intermediate portion, then towards opening end hole enlargement once again, so when running the degree that the air-supply noise control can be quite quiet.
This example has following effect.
Promptly, owing to be expanded into towards opening end on the trumpet-shaped synthetic resin system horn mouth 6 at curved part 6b, between curved part 6b and the 2nd plat part 6b, form the bump 6g of heavy wall, just can not become the structure that formed article (horn mouth) 6 and metal mould for formation are packed into mutually, even so adopt simple metal pattern structure, also easily with the formed article demoulding, the cost of having avoided causing because of the metal pattern structure complicated rises.
In addition, by on heavy section 6h, forming a plurality of slit 6i, can prevent from heavy section 6h, to produce pore when moulding material from solidifying.Thereby, can prevent that the formed article (horn mouth) 6 that causes of part holes is out of shape.Therefore, can use ester moulding manufactured horn mouth 6 accurately.In addition, as mentioned above, owing to horn mouth 6 can be made resin forming product, so but alleviator weight, reduce cost.In addition, bump 6g and prevent that as pore the size of the slit 6i of portion from being specific is so realize being suitable for the structure of commercialization easily.
Have again, when stating the horn mouth 6 of using ester moulding in the use, parts such as electric parts can be disposed among the depressed part 6d of a side opening below horn mouth 6, so it is different with the occasion that these parts is arranged on horn mouth 6 tops, opening portion and this opening portion lid of sealing of maintenance usefulness need not be set, also need not make the labyrinth of this lid reliable sealing certainly.As a result, can prevent that cost from rising and made things convenient for the maintenance of part.
The present invention also can adopt following structure with regard to above-mentioned example.
For example, as the 1st variation of above-mentioned example, also can be as Figure 6 and Figure 7, be that the center side by side forms the slit 6j that extends along the circumferencial direction of heavy section 6h with opening 6c, prevent portion as pore.So, though air flow and above-mentioned example slightly changes, but still can be with the horn mouth 6 of the high-precision shaping synthetic resin system of simple metal pattern structure, so can obtain the effect identical with above-mentioned example.
As the 2nd variation, can be as Fig. 8 and shown in Figure 9, at the downside of heavy section 6h a plurality of recess 6k are set with being dispersed in, as the 3rd variation, can with heavy section 6h shaping hollow shape, form hollow portion 6l as shown in figure 10 in the inside of heavy section 6h.When using the 2nd and the 3rd variation, also can obtain the effect same with above-mentioned example.In addition, the horn mouth 6 that is provided with hollow portion 6l can be used in when being shaped the method shaping of injecting air in heavy section 6h, when formed article solidifies air being extracted out.
In addition, above-mentioned example is to form depressed part 6d in the part of horn mouth 6, and only form pore such as slit 6i on the heavy section 6h that in the scope corresponding, forms and prevent the 6i of portion, 6j, 6k, 6l with this depressed part 6d, but also whole horn mouth 6 can be made the sectional shape shown in the sectional view of Fig. 3, promptly, make the relative curved part 6b of whole the 1st plat part 6a to impeller 4 one sides depression, and preventing the 6i of portion, 6j, 6k, 6l along pores such as slit 6i are set on the whole heavy section 6h that is provided with in full week of opening portion 6c.
Have, above-mentioned example is that the present invention is used for the overhead embedded air conditioner again, and the present invention also can be used for the centrifugal blower of overhead ceiling type air conditioner device and monomer certainly.The present invention also can be used for the centrifugal blower of non-turbofan such as radial fan and multi blade fan.
Claims (14)
1. centrifugal blower, have impeller (4) and horn mouth (6), this horn mouth (6) has the curved part (6b) that constitutes opening (6c) in the substantial middle of plat part (6a, 6e), the intermediate portion diameter minimum of this curved part (6b), the diameter of opening end is greater than this intermediate portion
It is characterized in that, curved part (6b) is connected with plat part (6a, 6e) through the bump (6g) that more protrudes to air inlet one side than plat part (6a, 6e), on the other hand, the face by impeller (4) one sides of bump (6g) and plat part (6a, 6e) roughly becomes a plane, bump (6g) becomes heavy section (6h)
Horn mouth (6) is the formed article of synthetic resin, and heavy section (6h) is provided with the pore that produces pore when preventing to be shaped and prevents portion (6i, 6j, 6k, 6l).
2. centrifugal blower according to claim 1, it is characterized in that, part at plat part (6a, 6e) forms the depressed part (6d) that caves in to impeller (4) one sides, curved part 6b is connected with the 2nd plat part (6e) of the base plate that constitutes this depressed part (6d) through bump (6g), this bump (6g) forms heavy section (6h), at this heavy section (6h) pore is set simultaneously and prevents portion (6i, 6j, 6k, 6l).
3. centrifugal blower according to claim 1 and 2, it is characterized in that pore prevents that portion (6i, 6j, 6k, 6l) is by be that the center is the radial slit that forms (6i) formation at heavy section (6h) by the opening (6c) with horn mouth (6) on the face of air inlet one side.
4. centrifugal blower according to claim 1 and 2, it is characterized in that pore prevents that portion (6i, 6j, 6k, 6l) is by be slit (6j) formation that centres ground forms at heavy section (6h) by the opening (6c) with horn mouth (6) on the face of air inlet one side.
5. centrifugal blower according to claim 1 and 2 is characterized in that, pore prevents that portion (6i, 6j, 6k, 6l) from being made of a plurality of recesses (6k) by forming on the face of air inlet one side at heavy section (6h) with being dispersed in.
6. centrifugal blower according to claim 1 and 2 is characterized in that, pore prevents that portion (6i, 6j, 6k, 6l) is by constituting by heavy section (6h) being configured as the hollow portion (6l) that hollow shape forms.
7. centrifugal blower according to claim 1 and 2 is characterized in that, bump (6g) is 2～10mm from the height dimension that plat part (6a, 6e) protrudes, and the width dimensions of protrusion is 5～20mm.
8. centrifugal blower according to claim 7 is characterized in that, bump (6g) is 8mm from the height dimension that plat part (6a, 6e) protrudes, and the width dimensions of protrusion is 15mm.
9. centrifugal blower according to claim 3 is characterized in that, the opening (6c) that slit (6i) is gone up with horn mouth (6) at heavy section (6h) is the center, is radial formation with 1.5 °～2.0 ° intervals.
10. centrifugal blower according to claim 9 is characterized in that, the opening (6c) that slit (6i) is gone up with horn mouth (6) at heavy section (6h) is the center, is radial formation with 1.8 ° intervals.
11. centrifugal blower according to claim 3 is characterized in that, slit (6i) forms along the circumferencial direction of heavy section (6h) interval with about 3.5mm,
12. centrifugal blower according to claim 9 is characterized in that, the top width (a) because of each chevron body that slit (6i) forms between each slit (6i) is set of heavy section (6h) is approximately 2mm.
13. centrifugal blower according to claim 3 is characterized in that, heavy section (6h) is that the center forms in about 150 ° scope with the opening portion (6c) of horn mouth (6), and forms 82 place's slits (6i).
14. aircondition, downside central part at housing (2) is provided with air suction inlet (9a), around it, be provided with air blow-off outlet (9b), in this housing (2), dispose centrifugal blower (3) simultaneously and be positioned at this centrifugal blower (3) heat exchanger (7) on every side
It is characterized in that, with the corresponding air suction inlet of horn mouth (6) (9a) configuration of each described centrifugal blower (3) in the claim 1 to 10.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30374999A JP3303860B2 (en) | 1999-10-26 | 1999-10-26 | Centrifugal blower and air conditioner |
| JP303749/1999 | 1999-10-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1294266A true CN1294266A (en) | 2001-05-09 |
| CN1190596C CN1190596C (en) | 2005-02-23 |
Family
ID=17924819
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001240889A Expired - Fee Related CN1190596C (en) | 1999-10-26 | 2000-08-21 | Centrifugal blower and air conditioning appts. |
| CN00242769U Expired - Lifetime CN2460761Y (en) | 1999-10-26 | 2000-08-22 | Centrifugal blower |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00242769U Expired - Lifetime CN2460761Y (en) | 1999-10-26 | 2000-08-22 | Centrifugal blower |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3303860B2 (en) |
| CN (2) | CN1190596C (en) |
| AU (1) | AU6319900A (en) |
| WO (1) | WO2001033144A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833048A (en) * | 2020-12-30 | 2021-05-25 | 广东美的白色家电技术创新中心有限公司 | Volute, fan and cigarette machine |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4506206B2 (en) * | 2004-03-01 | 2010-07-21 | ソニー株式会社 | Fan device |
| JP4747542B2 (en) * | 2004-09-28 | 2011-08-17 | ダイキン工業株式会社 | Blower and air conditioner |
| JP6091386B2 (en) * | 2013-09-11 | 2017-03-08 | 三菱電機株式会社 | Blower and refrigeration cycle apparatus |
| JP6596951B2 (en) * | 2015-06-10 | 2019-10-30 | 株式会社Ｓｏｋｅｎ | Blower |
| JP6690256B2 (en) * | 2016-01-26 | 2020-04-28 | 株式会社富士通ゼネラル | Ceiling embedded air conditioner |
| EP3460254B1 (en) * | 2016-05-20 | 2021-12-01 | Mitsubishi Electric Corporation | Air conditioner |
| CN110073147B (en) * | 2016-12-19 | 2021-07-02 | 三菱电机株式会社 | Air conditioner |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0180697U (en) * | 1987-11-17 | 1989-05-30 | ||
| JPH0882299A (en) * | 1994-09-14 | 1996-03-26 | Daikin Ind Ltd | Multiple-blade blower |
| JPH11223380A (en) * | 1998-02-04 | 1999-08-17 | Daikin Ind Ltd | Room unit of air conditioner and handling method of heat exchanger therein |
-
1999
- 1999-10-26 JP JP30374999A patent/JP3303860B2/en not_active Expired - Fee Related
-
2000
- 2000-08-04 AU AU63199/00A patent/AU6319900A/en not_active Abandoned
- 2000-08-04 WO PCT/JP2000/005276 patent/WO2001033144A1/en active Application Filing
- 2000-08-21 CN CNB001240889A patent/CN1190596C/en not_active Expired - Fee Related
- 2000-08-22 CN CN00242769U patent/CN2460761Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833048A (en) * | 2020-12-30 | 2021-05-25 | 广东美的白色家电技术创新中心有限公司 | Volute, fan and cigarette machine |
Also Published As
| Publication number | Publication date |
|---|---|
| AU6319900A (en) | 2001-05-14 |
| JP2001124360A (en) | 2001-05-11 |
| WO2001033144A1 (en) | 2001-05-10 |
| JP3303860B2 (en) | 2002-07-22 |
| CN1190596C (en) | 2005-02-23 |
| CN2460761Y (en) | 2001-11-21 |
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Legal Events
| Date | Code | Title | Description |
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| BB1A | Publication of application | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050223 Termination date: 20130821 |