CN2455952Y - Centrifugal fan - Google Patents
Centrifugal fan Download PDFInfo
- Publication number
- CN2455952Y CN2455952Y CN 00242777 CN00242777U CN2455952Y CN 2455952 Y CN2455952 Y CN 2455952Y CN 00242777 CN00242777 CN 00242777 CN 00242777 U CN00242777 U CN 00242777U CN 2455952 Y CN2455952 Y CN 2455952Y
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- CN
- China
- Prior art keywords
- horn mouth
- impeller
- plate
- air
- cylindrical portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
Abstract
The utility model relates to a centrifugal fan provided with an impeller and a horn mouth arranged on an air drawing side of the impeller. The horn mouth is provided with a cylindrical part, a diameter expansion part, and a plate-shaped part, wherein, one end of the cylindrical part is communicated with the impeller, the diameter expansion part is connected with the other end of the cylindrical part, and the plate-shaped part which is connected with the diameter expansion part bulges to the outer side of a radial direction. The centrifugal fan is characterized in that one part of the circumferential direction of the diameter expansion part of the horn mouth forms a concave inlaid part towards one side of the impeller. The utility model prevents the air drawing resistance from increasing, and realizes the miniaturization of air-conditioning devices.
Description
The utility model relates to centrifugal blower.Be particularly related to the bell-mouth construction of the air sucking side that is arranged on centrifugal blower.
Past, centrifugal blowers such as turbofan, be in for example ceiling board suspending type aircondition (for example the spy opens flat 10-184591 communique) and ceiling built-in air-conditioning system (for example the spy opens flat 11-223380 communique), be used in the indoor air suction device, blow out to indoor regulating air again.
Fig. 3 is the sectional view of the general structure of this aircondition 50 of pattern ground expression.As shown in the figure, this aircondition 50 is that machines such as turbofan 52 and heat exchanger 53 are set in box-shaped enclosure 51.In the bottom of shell 51 decoration panel not shown in the figures is installed, has formed air suction inlet 54a and air blow-off outlet 54b.And, follow the driving of turbofan 52 and after adjusting temperature from the indoor air that air suction inlet 54a sucks by heat exchanger 53, blow to indoor through each air blow-off outlet 54b.
In the air sucking side of the impeller 55 of turbofan 52, be installed with the lead horn mouth 56 of this impeller 55 of indoor air.Horn mouth 56 has cylindrical portion 56a, the wide diameter portion 56b that links to each other with the other end of cylindrical portion 56a that an end and impeller 55 be communicated with, reach the plate-like portion 56c that links to each other with wide diameter portion 56b and stretch out to radial outside.And, near above this horn mouth 56, the switch capsule 57 that holds electric component is being set.
, even the size of electric component self and number are also roughly constant when aircondition 50 miniaturizations, so be difficult to realize the miniaturization of switch capsule 57.Therefore, in order also switch capsule 57 to be set when aircondition 50 miniaturizations, the plate-like portion 56c that make horn mouth 56 is near the air filter 58 that is arranged on air suction inlet 54a upper side, and so, will increase the suction resistance of air.
The utility model is just in view of this problem, and purpose is at centrifugal blower and uses in the aircondition of this centrifugal blower and improve horn mouth, makes device prevent the increase of air suction resistance in miniaturization.
The utility model is a kind of centrifugal blower, have impeller 4 and be arranged on the horn mouth 6 of the air sucking side of impeller 4, horn mouth 6 has at one end the cylindrical portion 6a, the wide diameter portion 6b that is connected with the other end of cylindrical portion 6a that are communicated with impeller 4 one sides, reach and be connected with wide diameter portion 6b and the plate-like portion 6c that stretches out in the radially past outside.And the wide diameter portion 6b of the horn mouth 6 of this centrifugal blower constitutes the cancave embedded part 6d that sink to impeller 4 one sides in the part of circumferencial direction.
In this structure, because the wide diameter portion 6b of horn mouth 6 constitutes the cancave embedded part 6d that sink to impeller 4 one sides in the part of circumferencial direction, so the time with aircondition 1 miniaturization, even the plate-like portion 6c of horn mouth 6 is near the filter 9c that is arranged on air suction inlet 9a upper side, also because air is inhaled into impeller 4 by this cancave embedded part 6d, so can prevent the increase of suction resistance.
In above-mentioned structure, the wide diameter portion 6b of horn mouth 6 can make following shape, promptly except cancave embedded part 6d, connects cylindrical portion 6a and plate-like portion 6c by conical surface.
And portion's product such as switch capsule 11 that generally can have during at aircondition 1 miniaturization are provided with the problem of difficulty, by conical surface is set, can be enough to be provided with switch capsule 11 in this space more guaranteeing the space by the part of impeller 4 one sides than plate-like portion 6c.
In above-mentioned structure, the cancave embedded part 6d of horn mouth 6 can form in about around 150 ° field, center by cylindrical portion 6a.
Have again, in above-mentioned structure, the cancave embedded part 6d of horn mouth 6 have the side plate 6f that is connected with above-mentioned plate-like portion 6c and extends along the axis direction of cylindrical portion 6a, and link to each other with above-mentioned cylindrical portion 6a and with the base plate (6e) of plate-like portion 6c almost parallel extension, and side plate 6f and base plate 6e interconnect.
Adopt these structures, when commercialization, can realize the concrete shape of suitable horn mouth 6.
And, aircondition 1 of the present utility model has air suction inlet 9a at the downside central part of shell 2, around it, be provided with air blow-off outlet 9b, centrifugal blower 3 is set in this shell 2 simultaneously and is positioned at this centrifugal blower 3 heat exchanger 7 on every side, be characterized in corresponding air suction inlet 9a and the horn mouth 6 of the centrifugal blower 3 of such scheme is set.
When in aircondition 1, using above-mentioned horn mouth 6 like this, both suppressed the increase of air suction resistance, miniaturization that again can implement device 1.
Simple declaration to accompanying drawing
Fig. 1 is the sectional view of the aircondition of the utility model example.
Fig. 2 is a bell-mouthed stereogram used in Fig. 1 aircondition.
Fig. 3 is the sectional view of the traditional aircondition general structure of pattern ground expression.
Specify example of the present utility model below in conjunction with accompanying drawing.
As shown in Figure 1, this example relates to ceiling built-in air-conditioning system 1.This aircondition 1 is inserted into ceiling board R and goes up among the opening H that forms, and the sheet metal system shell 2 of Chang Kaiing is installed in the space S at the ceiling board back side downwards.The side plate 2b that shell 2 has top board 2a and extends downwards from the edge portion of this top board 2a.Its inside has held each machine.Below each machine is illustrated.
Central part in shell 2 is provided as the turbofan 3 of centrifugal blower.This turbofan 3 is made of impeller 4, fan motor 5 and horn mouth 6.Impeller 4 is to keep blade 4c between guard shield 4a and wheel hub 4b, and the central part of wheel hub 4b directly connects with the live axle underpart of the fan motor 5 of the central part that is fixedly installed on shell 2.And, because blade 4c will blow out to radial outside from the downside inhaled air along with the rotary driving of fan motor 5.
Fig. 2 is the stereogram of the horn mouth 6 seen from below.As shown in the figure, in the horn mouth 6 of this example, to plate-like portion 6c, form the cancave embedded part 6d that sink to impeller 4 one sides in the part of its circumferencial direction from wide diameter portion 6b.On the other hand, wide diameter portion 6b is except cancave embedded part 6d, and cylindrical portion 6a is being connected by conical surface with plate-like portion 6c.Cancave embedded part 6d is the center with cylindrical portion 6a, and about around 150 ° field forms.Above-mentioned cancave embedded part 6d have the side plate 6f that links to each other with plate-like portion 6c and extend along the axis direction of cylindrical portion 6a be connected with cylindrical portion 6a and with the base plate 6e of plate-like portion 6c almost parallel ground extension, side plate 6f and base plate 6e are interconnecting.
And as shown in Figure 1, at the upper side of above-mentioned horn mouth 6, in the part except cancave embedded part 6d, the conical surface from plate-like portion 6c along wide diameter portion 6b is being provided with switch capsule 11.Though this switch capsule 11 is not shown, be formed in the about 180 ° on every side field of cylindrical portion 6a.
As shown in Figure 1, in the outside of the impeller 4 of turbofan 3 heat exchanger 7 is being set.Heat exchanger 7 is to be connected with not shown outdoor unit by refrigerant piping, plays a role as vaporizer during refrigeration, plays a role as condenser when system is warm, and the air that blows out from turbofan 3 is carried out the temperature adjustment.At the downside of above-mentioned heat exchanger 7, drainage tray 8 is being set, be used for reclaiming the draining that produces by heat exchanger 7.
In the underpart of shell 2, the decoration panel 9 of overlooking the shape that is rectangle is installed.Central part at decoration panel 9 forms the air suction inlet 9a that is made up of rectangular shape opening.And, at a plurality of positions (for example 4 positions) of the side portion of decoration panel 9, with the corresponding formation in each limit air blow-off outlet 9b, the 9b of decoration panel 9 ...Air suction inlet 9a at decoration panel 9 is being provided with air filter 9c, is used for removing the dust from air suction inlet 9a inhaled air.Downside at air filter 9c is installed with suction grid 9d.
Adopt above structure, formed airflow path 10 to air blow-off outlet 9b, and from the upstream side of airflow path 10 side downstream, air is in turn by air filter 9c, horn mouth 6, impeller 4 and heat exchanger 7 from the air suction inlet 9a of decoration panel 9.
The below running action of the aircondition 1 of the above-mentioned structure of explanation.During the running beginning, follow the driving of the fan motor 5 of turbofan 3, impeller 4 rotations, refrigeration agent flows through heat exchanger 7 simultaneously.By dedusting, pass through heat exchanger 7 from the space between air filter 9c and the horn mouth 6 via turbofan 3 again when making indoor air be inhaled into the back by air filter 9c thus from sucking grid 9d.Carry out the heat exchange between air and the refrigeration agent in this process, air is carried out temperature adjustment (cooling during refrigeration, heating when system is warm) and becomes the adjusting air, from air blow-off outlet 9b to indoor supply.
And, when adopting this example, because in horn mouth 6, formed cancave embedded part 6d, so even horn mouth 6 and air filter 9c, can prevent also that the air suction resistance from increasing near being provided with.And except cancave embedded part 6d, 6b makes conical surface shape with wide diameter portion, so even aircondition 1 miniaturization also can guarantee to be provided with the space of switch capsule 11 on the top of horn mouth 6.
Above-mentioned example is provided with switch capsule 11 above horn mouth 6, but is not certain so configuration, and portion's product such as switch capsule 11 for example also can be arranged on the below of the base plate 6e of cancave embedded part 6d.
In addition, above-mentioned example is that 6b makes the conical surface with wide diameter portion except cancave embedded part 6d, but also can make flexure plane.And it is 150 ° of fields at center that the field of wide diameter portion 6b is not limited to cylindrical portion 6a, can be according to the structure arbitrary decision of device.And above-mentioned example is to form cancave embedded part 6d from wide diameter portion 6b to plat part 6c, but also can only form in the field of wide diameter portion 6b.That is, plat part 6c can not be the state that is recessed into.
Have, above-mentioned example is that the utility model is used for ceiling built-in air-conditioning system 1 again, and the utility model also can be used for the centrifugal blower of ceiling board suspending type aircondition and monomer.The utility model also can be used for centrifugal blowers such as radial fan beyond the turbofan and multi blade fan.
Claims (4)
1. centrifugal blower, has impeller (4) and at the horn mouth (6) of the air sucking side that impeller (4) is set, horn mouth (6) has at one end the cylindrical portion (6a) that is communicated with impeller (4), the wide diameter portion (6b) that is connected with cylindrical portion (6a) the other end, reach the plate-like portion (6c) that is connected with wide diameter portion (6b) and stretches out to radial outside
It is characterized in that the wide diameter portion (6b) of horn mouth (6) constitutes the cancave embedded part (6d) that sink to impeller (4) one sides in the part of circumferencial direction.
2. centrifugal blower according to claim 1 is characterized in that, the wide diameter portion (6b) of horn mouth (6) connects cylindrical portion (6a) and plate-like portion (6c) with conical surface except that cancave embedded part (6d).
3. centrifugal blower according to claim 1 and 2 is characterized in that, the cancave embedded part (6d) of horn mouth (6) forms in the about 150 ° on every side field that with cylindrical portion (6a) is the center.
4. according to claim 1,2 or 3 described centrifugal blowers, it is characterized in that, the cancave embedded part (6d) of horn mouth (6) have the side plate (6f) that is connected with above-mentioned plate-like portion (6c) and extends along the axis direction of cylindrical portion (6a), and be connected with above-mentioned cylindrical portion (6a) and with the base plate (6e) of plate-like portion (6c) almost parallel ground extension, side plate (6f) and base plate (6e) interconnect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00242777 CN2455952Y (en) | 2000-08-22 | 2000-08-22 | Centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00242777 CN2455952Y (en) | 2000-08-22 | 2000-08-22 | Centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2455952Y true CN2455952Y (en) | 2001-10-24 |
Family
ID=33602829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00242777 Expired - Lifetime CN2455952Y (en) | 2000-08-22 | 2000-08-22 | Centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2455952Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104755847A (en) * | 2013-09-17 | 2015-07-01 | 三菱电机株式会社 | Air conditioner |
-
2000
- 2000-08-22 CN CN 00242777 patent/CN2455952Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104755847A (en) * | 2013-09-17 | 2015-07-01 | 三菱电机株式会社 | Air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20100822 Granted publication date: 20011024 |