CN100343595C - Fan hood for air conditioner indoor machine - Google Patents
Fan hood for air conditioner indoor machine Download PDFInfo
- Publication number
- CN100343595C CN100343595C CNB031297781A CN03129778A CN100343595C CN 100343595 C CN100343595 C CN 100343595C CN B031297781 A CNB031297781 A CN B031297781A CN 03129778 A CN03129778 A CN 03129778A CN 100343595 C CN100343595 C CN 100343595C
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- China
- Prior art keywords
- air
- fan
- orifice plate
- fan guard
- fan hood
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- 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.)
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Abstract
The present invention discloses a fan hood for an indoor machine of an air conditioner, which comprises a fan hood body, a round air suction port, an air exhaust port and a hole plate, wherein a fan is arranged in the fan hood body, and the fan hood body is used for guiding the space of output air; the round air suction port is arranged on the fan hood body, opened towards the rotary center of the fan and used for sucking outer air; the air exhaust port is arranged on the fan hood body, is opened towards the tangential direction of the outer circumference of the fan and outwards exhausts air; the hole plate is arranged along the outer circumference of the air suction port and used for guiding the air to flow into the air suction port; the outer surface of the hole plate is in a streamline shape. The present invention has the advantages that because the outer surface of the hole plate of the fan hood is in a streamline shape, the air passing through the hole plate flows more smoothly, no vortex flow is generated, and noise is largely reduced.
Description
Technical field
The present invention relates to a kind of air-conditioner, particularly relate to a kind of fan guard of air conditioner room unit.
Background technology
As shown in Figure 1, the structure of existing indoor machine of air-conditioner is: shell 1 constitutes the outward appearance of indoor set, shell 1 be shaped as cuboid, the bottom of its front panel is provided with suction grille 3, top is provided with air discharge grille 5; Be provided with the control panel 7 of the operation of control air-conditioner below the described air discharge grille 5; The effect of described suction grille 3 is to suck room air to carry out heat exchange, and the effect of air discharge grille 5 is to be discharged into the interior space with carry out heat-exchanged air in indoor set.
In order to suck air by suction grille 3 to indoor set inside, the rear of described suction grille 3 is provided with fan 9, is provided with heat exchanger 11 above the fan 9.
In order to make fan 9 air stream can be delivered to heat exchanger 11 exactly, the outer setting of fan 9 has fan guard 13.Below with reference to Fig. 2 and Fig. 3 the structure of fan guard 13 is illustrated:
The main body of described fan guard 13 is oblate cylindrical structure, and an one rounded bottom surface is provided with air entry 14, and its cylindrical sides is provided with the exhaust outlet 15 that is shaped as rectangle.Described air entry 14 is installed towards the back of suction grille 3, and described exhaust outlet 15 is installed towards the bottom of heat exchanger 11.
As shown in Figure 4, the excircle of described air entry 14 is provided with orifice plate 16, and the surface of orifice plate 16 is circular arc, and its effect is that steering current enters fan 9 by air entry 14.
In above-mentioned existing indoor machine of air-conditioner, fan 9 starts the back room air and enters shell 1 by suction grille 3, enter fan guard 13 by air entry 14 then, air flows to into the direction of fan 9 and fan 9 and selects shaft parallel, the air stream that is inhaled into fan 9 is from exhaust outlet 15 row's heat exchanger 11, carry out becoming Cryogenic air after the heat exchange with the refrigerant in the heat exchanger, Cryogenic air is discharged into the interior space by output grid 5.
But there is following shortcoming in the fan guard 13 of above-mentioned existing indoor machine of air-conditioner:
As shown in Figure 3, under the effect of the suction of fan 9, the portion of air that enters fan guard 13 air entries 14 by suction grille 3 can form eddy current in the porch of orifice plate 16.This is because directly connected circular arc orifice plate 16 on the flat bottom of fan guard 13, in other words, will produce eddy current when the plane airflow flowing runs into the curved surface of protrusion suddenly, and this eddy current can produce bigger noise.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of the fan guard 13 of above-mentioned existing indoor machine of air-conditioner, provides a kind of noise little and can make the flow fan guard of more unobstructed air conditioner room unit of the air of suction fan cover.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: the fan guard of air conditioner room unit of the present invention comprises: inside is provided with fan and has the fan guard body in the space that is used for guiding delivery air, the circular suction port that is used for sucking extraneous air that is arranged on the fan guard body and opens to the pivot of fan, the exhaust outlet of the outside discharged air that is arranged on the fan guard body and opens to the tangential direction of fan excircle and along the excircle setting of air entry be used for guide air to flow to orifice plate into air entry, the outer surface of described orifice plate is streamlined.
On the outer surface of described orifice plate from the leading flank of fan guard to being the inclined plane the summit of orifice plate, from the summit to the air entry between for having the curved surface of certain curvature radius, described summit is meant the point that protrudes most on the outer surface of orifice plate.
The invention has the beneficial effects as follows: because the orifice plate outer surface of fan guard is streamlined, it is more unobstructed to make that the air that passes through orifice plate flows, and can not produce eddy current, has reduced noise greatly.
Description of drawings
Fig. 1 is the primary structure schematic diagram of existing air conditioner room unit;
Fig. 2 is the structural representation of the fan guard of existing air conditioner room unit;
Fig. 3 is the interior air-flow direction schematic diagram of the fan guard of existing air conditioner room unit;
Fig. 4 is the perspective view of the fan guard specific embodiment of air conditioner room unit of the present invention;
Fig. 5 is the sectional structure and the air-flow direction schematic diagram of the fan guard specific embodiment of air conditioner room unit of the present invention.
Among the figure:
30: fan guard 32: the fan guard body
33: leading flank 34: outer cylinder
36: air entry 38: exhaust outlet
40: orifice plate 41: inclined plane
42: curved surface 43: summit
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Fan is arranged on the inside of fan guard 30, fan guard 30 be arranged on heat exchanger in the air conditioner room unit shell below.
As shown in Figure 4 and Figure 5, described fan guard 30 comprises: oblate tubular fan guard body 32, air entry 36, exhaust outlet 38 and orifice plate 40.
The inside of described fan guard body 32 is provided with fan, forms the space of steering current simultaneously.Described fan guard body 32 is called as leading flank 33 towards the round sides of indoor set suction grille, is called as outer cylinder 34 along vertical fan guard body 32 sides that form of the excircle of leading flank 33.
Described leading flank 33 is provided with circular air entry 36, and the center of leading flank 33 is departed from the center of described air entry 36 slightly.Room air enters fan guard 32 by air entry 36 under the effect of the suction of fan.
Be formed with exhaust outlet 38 on the described outer cylinder 34, exhaust outlet 38 protrudes from outer cylinder 34 along the tangential direction of fan excircle, the bottom of described exhaust outlet 38 heat exchanger in the air conditioner room unit shell.
The excircle place of described air entry 36 is provided with annular orifice plate 40, the outer surface of orifice plate 40 is streamlined, specifically, the outer surface of orifice plate 40 comprises from the leading flank 33 of fan guard to the inclined plane 41 on the summit 43 of orifice plate 40 and 43 curved surfaces with certain curvature radius 42 to air entry 36 from the summit.Described summit 43 is meant the point that protrudes most on the outer surface of orifice plate 40.
The course of work to the fan guard of air conditioner room unit of the present invention is illustrated below:
After described fan guard 30 installed, air entry 36 made the bottom of suction grille exhaust outlet 38 towards heat exchanger towards the indoor set shell.Fan guard 30 inside are provided with fan.
After air-conditioner started, fan began to rotate under the driving of fan electromotor, and room air is inhaled into the air conditioner room unit shell by suction grille.The air that is inhaled into by suction grille flows to the leading flank 33 of fan cover body 32, and the guiding by orifice plate 40 enters fan guard body 32 from air entry 36.
In this process, the air by orifice plate 40 at first 41 flows along the inclined plane, arrives 43 backs, summit and flows into air entries 36 along curved surface 42.
Because the outer surface of orifice plate 40 is streamlined, therefore make Laminar Flow by the air-flow of orifice plate 40, particularly can not produce the phenomenon of eddy current at the position that orifice plate 40 is connected with leading flank 33, therefore reduced noise greatly.
The air-flow that flows into air entry 36 is drawn in the fan of fan guard body 32 inside, by exporting along fan center of circle direction behind the fan, flow to exhaust outlet 38 along the inner surface of fan cover body 32 from the air of center of circle direction output, when the air of exhaust outlet 38 output is flowed through heat exchanger and the refrigerant the heat exchanger carry out heat exchange, become cryogenic gas and be discharged into indoor.
Obviously, according to basic fundamental design of the present invention, those of ordinary skill in the art need not can associate some other specific embodiment by creative work, and these all should belong to protection scope of the present invention.
Claims (1)
1. the fan guard of an air conditioner room unit, comprise: inside is provided with fan and has the fan guard body in the space that is used for guiding delivery air, is arranged on the fan guard body and sucks the circular suction port of extraneous air and the exhaust outlet of the outside discharged air that is arranged on the fan guard body and opens to the tangential direction of fan excircle to being used for of opening of the pivot of fan, it is characterized in that: also comprise along the excircle setting of air entry be used for guide air to flow to orifice plate (40) into air entry, the outer surface of orifice plate (40) is streamlined; On the outer surface of described orifice plate (40) from the leading flank (33) of fan guard to being inclined plane (41) the summit (43) of orifice plate (40), from summit (43) to the air entry (36) for having the curved surface (42) of certain curvature radius, described summit (43) are meant the point that protrudes most on the outer surface of orifice plate (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031297781A CN100343595C (en) | 2003-05-20 | 2003-05-20 | Fan hood for air conditioner indoor machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031297781A CN100343595C (en) | 2003-05-20 | 2003-05-20 | Fan hood for air conditioner indoor machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1548838A CN1548838A (en) | 2004-11-24 |
| CN100343595C true CN100343595C (en) | 2007-10-17 |
Family
ID=34322437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031297781A Expired - Fee Related CN100343595C (en) | 2003-05-20 | 2003-05-20 | Fan hood for air conditioner indoor machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100343595C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4865497B2 (en) * | 2006-10-19 | 2012-02-01 | 三菱重工業株式会社 | Centrifugal blower |
| CN101338770B (en) * | 2007-07-04 | 2010-08-04 | 富准精密工业(深圳)有限公司 | Centrifugal fan |
| CN101684964B (en) * | 2008-09-26 | 2013-01-23 | 乐金电子(天津)电器有限公司 | Orifice plate at front face of fan cover of air supply motor of cabinet type air-conditioning indoor machine |
| TWI681130B (en) * | 2018-11-26 | 2020-01-01 | 建準電機工業股份有限公司 | Fan shell and fan wheel combination structure and fan shell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2260280Y (en) * | 1996-01-10 | 1997-08-20 | 王冬来 | Air ventilating hood for gas combustion water heater |
| CN1275191A (en) * | 1998-09-30 | 2000-11-29 | 大金工业株式会社 | Air conditioning unit |
| JP2002295863A (en) * | 2001-03-28 | 2002-10-09 | Mitsubishi Heavy Ind Ltd | Air conditioner and indoor unit |
| CN1376878A (en) * | 2001-03-23 | 2002-10-30 | 三菱重工业株式会社 | Indoor unit and air conditioner |
-
2003
- 2003-05-20 CN CNB031297781A patent/CN100343595C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2260280Y (en) * | 1996-01-10 | 1997-08-20 | 王冬来 | Air ventilating hood for gas combustion water heater |
| CN1275191A (en) * | 1998-09-30 | 2000-11-29 | 大金工业株式会社 | Air conditioning unit |
| CN1376878A (en) * | 2001-03-23 | 2002-10-30 | 三菱重工业株式会社 | Indoor unit and air conditioner |
| JP2002295863A (en) * | 2001-03-28 | 2002-10-09 | Mitsubishi Heavy Ind Ltd | Air conditioner and indoor unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1548838A (en) | 2004-11-24 |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071017 |