CN1339676A - Blower fan assembly for window type air conditioner - Google Patents
Blower fan assembly for window type air conditioner Download PDFInfo
- Publication number
- CN1339676A CN1339676A CN01104795A CN01104795A CN1339676A CN 1339676 A CN1339676 A CN 1339676A CN 01104795 A CN01104795 A CN 01104795A CN 01104795 A CN01104795 A CN 01104795A CN 1339676 A CN1339676 A CN 1339676A
- Authority
- CN
- China
- Prior art keywords
- turbofan
- fan assembly
- blower fan
- recess
- vortex housing
- 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.)
- Granted
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Classifications
-
- 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
- F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
- F24F1/022—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle
- F24F1/027—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle mounted in wall openings, e.g. in windows
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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
- F24F1/0025—Cross-flow or tangential 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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
- F24F2013/205—Mounting a ventilator fan therein
Abstract
A blower fan assembly for window type air conditioner. The blowing fan assembly comprises a turbo fan consisting of the scroll case, a number of blades built in the scroll case, connected to a driving motor and spaced a certain distance from a hub and a shroud attached in common to the end of each of the blades at the opposite side of the hub. A pit portion is formed in the bottom face of the scroll case, with its diameter exceeding the outer diameter of the turbo fan. By locating the turbo fan to be lopsided to the side of the pit portion, the flow passage between the shroud of the turbo fan and a suction port of the scroll case is expanded.
Description
The present invention relates to a kind of blower fan assembly, more particularly, the present invention relates to be applied to the blower fan assembly of wall-through type air conditioner.
Usually, as shown in Figure 1, wall-through type air conditioner has separate housing 10 usually.In shell 10, be mounted with compressor 12, be used for compressed refrigerant; Condenser 14, thus be used for the temperature of condensation by compressor 12 refrigerant compressed and reduction cold-producing medium; And evaporimeter 16, to carry out with temperature and reduce the function that cold-producing medium carries out heat exchange by condenser 14, temperature is reduced by condenser 14.
The space that is limited in the wall-through type air conditioner shell 10 is divided into indoor section and outdoor section by division board 18.
Herein, as shown in Figure 2, blower fan assembly 20 has vortex housing 22 that forms an air duct and the turbofan 24 that is positioned at the vortex enclosure interior.
Shown in Fig. 3 and 4, the front surface of vortex housing 22 is formed with suction inlet 22a, and it has loudspeaker mouth shape profile, sucks in the vortex housing 22 by this suction inlet room air.The front surface of vortex housing 22 also is formed with exhaust outlet 22b in suction inlet 22a one side.
Turbofan 24 is connected on the CD-ROM drive motor 40.Turbofan 24 by a hub 241, be positioned at a plurality of blades 242, be secured to a plurality of blade 242 far-ends apart from hub 241 preset space length places, the shield 243 relative with hub 241 constitute.
By the blower fan assembly 20 of constructing as mentioned above, warm air is also cooled off by evaporimeter 16 thus by the rotation driving of turbofan 24 in the room.After this, the air of cooling sucks vortex housing 22 by suction inlet 22a.Then, inhaled air is discharged from vortex housing 22 by a plurality of blade 242 compressions and by exhaust outlet 22b.In this way, the air themperature in the room is suitably regulated the room is cooled down.
At this moment, the air of the cooling of discharging from vortex housing 22 is because static pressure increases effect is not sucked again in the vortex housing 22 immediately, and is diffused on the contrary than the territory, far field, and static pressure to increase corresponding be because vortex housing 22 inside that exist in of shield 243 cause.
Owing to contacting the refrigerant that elevates the temperature with warm air at evaporimeter 16 places by in the process of condenser 14, drive the extraneous air that flows to outdoor section by rotation and cool off once more by tube-axial fan 30, and circulation continuously.
On the other hand, be used for the blower fan assembly of traditional wall-through type air conditioner, multi blade fan (siroccofan) (not shown) can substitute turbofan 24 and use.In this respect, because the multiple-blade fan has big air blowing rate, so the size of multiple-blade fan can reduce.Yet, when supposing that turbofan 24 and multiple-blade fan has same air blowing rate, because the multiple-blade fan is compared the power consumption with increase with turbofan 24, so multiple-blade fan shortcoming is its operating efficiency reduction.
The result, recently, the turbofan 24 that has higher operating efficiency than multi blade fan is mainly used in blower fan assembly, owing to compare with multi blade fan with same air blowing rate, turbofan 24 has occupied the volume that increases, so in order to realize effective blowing function with turbofan 24, sufficient air blowing passage must be arranged in the vortex housing 22.
Therefore, has the air conditioner size of the multi blade fan of same air blowing rate greater than application, so comprise that microminiaturization has negative effect to air conditioner for the blower fan assembly of aforementioned turbofan 24 owing to use the air conditioner size of turbofan 24.
In addition, vortex housing 22 at the vortex housing 22 of the blower fan assembly of using turbofan 24 and the blower fan assembly of using multi blade fan has same size, if the rotating speed of turbofan 24 improves so that realize effective blowing function, the problem of then drawing is that the running noise of CD-ROM drive motor 40 has increased.
Thereby, the present invention is devoted to solve the problem that produces in correlation technique, and the purpose of this invention is to provide a kind of blower fan assembly that is used for wall-through type air conditioner, its mesoscale eddies housing forms with the mode structure that enlarges air duct, realize effective blowing function thus and the volume handle increase of whole blower fan assembly, and do not improve the rotating speed of turbofan.
In order to achieve the above object, according to an aspect of the present invention, the blower fan assembly that is used for wall-through type air conditioner is provided, comprise vortex housing and the turbofan that is arranged in the vortex housing and is connected with CD-ROM drive motor, turbofan has wheel hub, be positioned at a plurality of blades that the preset space length place is arranged with wheel hub, be attached to a plurality of blade tail ends shield relative with wheel hub, be characterised in that recess is formed on the diapire of vortex housing in such a way, make the external diameter of recess diameter greater than turbofan, and turbofan side in such a way is arranged in the vortex housing with hanging low, make and close on recess, the air duct of determining between turbofan shield and vortex housing suction inlet enlarges thus.
According to a further aspect of the invention, auxiliary recesses with wedge-like profile is formed on recess one side on the vortex shell bottom wall in such a way, make auxiliary recesses on direction, shoal gradually, thereby the air velocity of discharging from turbofan is improved away from recess.
According to another aspect of the invention, recess forms in such a way, makes that its degree of depth is the 10-20% of vortex housing width, and diameter is the 100-110% of turbofan external diameter, and projected angle is 35-45 °.
According to a further aspect of the present invention, the auxiliary recesses with wedge-like profile forms in such a way, makes that the distance between its peak and the recess center is the 140-160% of turbofan external diameter.
Above-mentioned purpose of the present invention, further feature and advantage will be more apparent after the following detailed description of reading at accompanying drawing, in the accompanying drawing:
Fig. 1 is the schematic sectional view of explanation conventional window formula air conditioner structure;
Fig. 2 is the perspective view that explanation is applied to traditional blower fan assembly structure of traditional wall-through type air conditioner;
Fig. 3 is the transverse cross sectional view of Fig. 2, shows the structure of traditional blower fan assembly;
Fig. 4 be Fig. 2 vertically analyse and observe view, show the structure of traditional blower fan assembly;
Fig. 5 is the front perspective view of the blower fan assembly structure of the explanation embodiment of the invention;
Fig. 6 is the rear view of the blower fan assembly structure of the explanation embodiment of the invention;
Fig. 7 is the transverse cross sectional view of Fig. 5, shows the structure of the blower fan assembly of the embodiment of the invention;
Fig. 8 is the longitudinal profile view of Fig. 5, shows the structure of the blower fan assembly of the embodiment of the invention.
Now in detail with reference to the preferred embodiments of the present invention, the explanation in Fig. 5-8 of one of them example.In the possibility part, identical Reference numeral is used for whole drawing and description to indicate identical or like.
At first, according to embodiments of the invention, the blower fan assembly that is used for wall-through type air conditioner comprises a vortex housing 23 and the turbofan 24 that places vortex housing 23 as shown in Figure 5.
As finding out that easily vortex housing 23 forms in such a way, make a recess 231 be formed on its diapire from Fig. 6.Turbofan 24 is established (lop-sidedly) in such a way asymmetricly and is put in vortex housing 23 so that face and connect recess 231, thus the elongated (see figure 7) of distance between the shield 243 of turbofan 24 and the vortex housing 23 suction inlet 23a.
With reference to figure 7 and 8, recess 231 forms in such a way and makes that its depth H is the 10-20% of vortex housing 23 width W, diameter Dc is the 100-110% of turbofan 24 outer diameter D (diameter of the circumference that obtains by the outer end that connects each blade), and projected angle α is 35-45 °.
One auxiliary recesses 232 is formed on recess 231 1 sides on vortex housing 23 diapires.Auxiliary recesses 232 is communicated with recess 231, so that the flow rate of the air of discharging from turbofan 24.
The blower fan assembly of Gou Zao the embodiment of the invention as mentioned above, the whole dimension of vortex housing 23 is compared with traditional vortex housing 22 and is not increased (see figure 3), but, only end turbofan 24 and move towards the rear end of vortex housing 23.
Thereby because the distance between the suction inlet 23a of the shield 243 of turbofan 24 and vortex housing 23 enlarges, air imbibed quantity increases.
In addition, owing to be formed on the existence of the auxiliary recesses 232 of recess 231 1 sides, because air flows by the exhaust outlet 23b of turbofan 24 towards vortex housing 23 with smooth mode more, so corresponding to the air imbibed quantity that has increased, air discharge also increases.
In other words, in blower fan assembly of the present invention because even compare when reduction with traditional blower fan assembly when the rotating speed of turbofan 24, identical air blowing rate is kept, so, can reduce the running noise that produces by CD-ROM drive motor 40 by reducing the rotating speed of turbofan 24.
As a result, blower fan assembly of the present invention has advantage as described below.At first, by revising the vortex shell structure and changing the position of turbine turbine, air blowing rate increases and the volume of whole blower fan assembly does not increase.Secondly, when supposing that blower fan assembly of the present invention and traditional blower fan assembly have same air blowing rate, the rotating speed of blower fan assembly of the present invention can reduce, and the running noise that is produced by CD-ROM drive motor significantly reduces thus.
In drawing and description, the general preferred embodiment of the present invention is disclosed, although adopted special shape, it only is used to meaning and the indefinite summarizing and illustrate, scope of the present invention will be set forth in following claims.
Claims (4)
1. blower fan assembly that is used for wall-through type air conditioner, comprise a vortex housing and the turbofan that places the vortex housing and be connected with CD-ROM drive motor, turbofan has a hub, apart from described hub with a plurality of blades of preset space length setting and be secured to a plurality of blade far-ends, the shield relative with described hub, it is characterized in that, one recess is formed on the diapire of vortex housing, its generation type makes the diameter of recess greater than the external diameter of turbofan, being arranged in the vortex housing of described turbofan off-centre so that face and connect described recess, thus the air duct that forms between turbofan shield and vortex housing suction inlet increases.
2. blower fan assembly as claimed in claim 1, it is characterized in that, one auxiliary recesses with wedge-like profile is formed on a side of described recess on the vortex shell bottom wall, its generation type makes described auxiliary recesses shoal gradually on the direction away from described recess, so that the air rate of discharging from turbofan is improved.
3. blower fan assembly as claimed in claim 1 is characterized in that described recess so forms, and makes its degree of depth in the scope of the 10-20% of vortex housing width, and diameter is in the scope of the 100-110% of turbofan external diameter, and projected angle is 35-45 °.
4. blower fan assembly as claimed in claim 2 is characterized in that, described auxiliary recesses with wedge-like profile is with formation like this, makes distance between its solstics and the described recess center in the scope of the 140-160% of turbofan external diameter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR47395/2000 | 2000-08-17 | ||
| KR10-2000-0047395A KR100381435B1 (en) | 2000-08-17 | 2000-08-17 | Fan assembly of Window type Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1339676A true CN1339676A (en) | 2002-03-13 |
| CN1187557C CN1187557C (en) | 2005-02-02 |
Family
ID=19683448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB01104795XA Expired - Fee Related CN1187557C (en) | 2000-08-17 | 2001-02-27 | Blower fan assembly for window type air conditioner |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3588327B2 (en) |
| KR (1) | KR100381435B1 (en) |
| CN (1) | CN1187557C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100585797B1 (en) * | 2003-10-23 | 2006-06-07 | 엘지전자 주식회사 | Air guide device for window type air-conditioner |
| KR100533050B1 (en) * | 2003-10-23 | 2005-12-05 | 엘지전자 주식회사 | Shroud for axial fan and air guide device for window type air-conditioner |
| US7930897B2 (en) | 2003-10-23 | 2011-04-26 | Lg Electronics Inc. | Window type air conditioner |
| KR100821733B1 (en) | 2006-12-28 | 2008-04-14 | 엘지전자 주식회사 | Air conditioner |
-
2000
- 2000-08-17 KR KR10-2000-0047395A patent/KR100381435B1/en not_active IP Right Cessation
-
2001
- 2001-02-27 CN CNB01104795XA patent/CN1187557C/en not_active Expired - Fee Related
- 2001-03-02 JP JP2001058383A patent/JP3588327B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR100381435B1 (en) | 2003-04-23 |
| JP2002061599A (en) | 2002-02-28 |
| CN1187557C (en) | 2005-02-02 |
| KR20020014224A (en) | 2002-02-25 |
| JP3588327B2 (en) | 2004-11-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050202 Termination date: 20100227 |