CN100532862C - Centrifugal fan guide parts with anti-backflow structure - Google Patents
Centrifugal fan guide parts with anti-backflow structure Download PDFInfo
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- CN100532862C CN100532862C CNB200410019493XA CN200410019493A CN100532862C CN 100532862 C CN100532862 C CN 100532862C CN B200410019493X A CNB200410019493X A CN B200410019493XA CN 200410019493 A CN200410019493 A CN 200410019493A CN 100532862 C CN100532862 C CN 100532862C
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- air
- fan
- indoor
- centrifugal fan
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Abstract
The centrifugal fan guide part with countercurrent preventing structure includes annular support part assembled on certain member and located in the inlet of the centrifugal fan to inhale air axially and exhaust air radially; air guiding part formed through bending the inner edge of the support part to make the inner edge of the support part aim at the inlet of the centrifugal fan for axial inhalation of air; and airflow blocking part formed between the support part and the air guiding part and near the outside of the centrifugal fan to prevent exhausted air from flowing inverse to the inlet of the fan. The present invention avoid countercurrent of exhausted air with the air guiding part installed in the inlet of the turbine fan.
Description
Technical field
The present invention relates to a kind of centrifugal fan guide element with backflow preventing structure.
Background technique
In general, centrifugal fan has several blades of along the circumferential direction installing, and along with these blades rotate along circumferencial direction, centrifugal fan can suck the direction of air along axle, and then discharges along radial direction.Everybody comparatively familiar centrifugal fan has turbine fan (turbo fan) and Sirocco fan (siroccofan) now, and two faces of the wherein wider width of each blade of turbine fan, and blade all are the planes; The width of each blade of Sirocco fan is then narrower, and blade forms certain curved surface towards sense of rotation.
In addition, the axial entrance of turbine fan also is equipped with annular guide element, and this guide element can be regulated the flow velocity of air, thereby inhaled air can be flowed reposefully.
As shown in Figure 1, existing window air conditioner comprises cabinet (10), and its inside forms certain space; Outdoor heat exchange department (20) is mounted in the inner side of cabinet (10), can produce heat exchange with outdoor air; Indoor side heat exchange department (30) is mounted in the inner opposite side of cabinet (10), can produce heat exchange with indoor air.
Two sides of the outdoor of cabinet (10) form outdoor intake grill (11), and the front of outdoor forms outdoor exhaust port (12).
The front of the indoor side of cabinet (10) forms indoor side intake grill (13), and upper half part of the front of indoor side is that the top of indoor side intake grill (13) forms indoor side exhaust port (14).
Outdoor heat exchange department (20) comprises compressor (21) and condensation heat exchanger (22), and it is connected with above-mentioned compressor (21) by refrigerant pipe, can produce heat exchange with outdoor air, thereby make gaseous refrigerant be converted into liquid refrigerant; Outdoor fan (23) is to be made of axial flow fan (axial fan), and it is installed in the inboard of condensation with heat exchanger (22), is used for the suction chamber outer air and uses heat exchanger (22) to discharge to above-mentioned condensation the outdoor air that sucks.
Indoor side heat exchange department (30) comprises evaporation heat exchanger (31), and it is connected with heat exchanger (22) with the condensation of above-mentioned outdoor heat exchange department (20), can make liquid refrigerant be converted into the gaseous refrigerant of low-temp low-pressure again; Indoor fan (32) is to be made of centrifugal fan, is mounted in the inboard of evaporation with heat exchanger (31), is used to suck indoor air and uses heat exchanger (31) to discharge to above-mentioned evaporation the indoor air that sucks.
What above-mentioned indoor fan (32) adopted is turbine fan, and it can suck indoor air vertically, and then discharges along radial direction.Indoor side guide element (33) is equipped with at the axial entrance place of indoor fan (32), and this indoor side guide element (33) can guarantee the stable inflow of indoor air.In addition, indoor side air baffle (34) is equipped with in the top of indoor fan (32), and this indoor side air baffle (34) can guide the indoor air that flows through above-mentioned indoor fan (32) to indoor side exhaust port (14).
Indoor side guide element (33) as shown in Figure 2, be ringwise, its outer part forms smooth planar surface portion (33a), form to the curling curved face part (33b) of the inlet of above-mentioned indoor fan (32) along part in it, thereby the interior of it can be overlapping with the inlet of indoor fan (32) along part.
In addition, between outdoor heat exchange department (20) and the indoor side heat exchange department (30) dividing plate (15) is housed, this dividing plate (15) can be separated into outdoor and indoor side with the inside of cabinet (10).Fan electromotor (40) is housed on the dividing plate (15), and this fan electromotor (40) is connected with indoor fan (32) with outdoor fan (23) respectively, thereby can provide rotating power to them.
Unaccounted number in the figure 24 is the outdoor guard shield, and 25 is the outdoor guide element.
Narrate the driving process of existing window air conditioner below.
Air conditioner is connected power supply, Driven Compressor (21), make refrigerant cycle, meanwhile, fan electromotor (40) also can drive, thereby outdoor air and indoor air are drawn into outdoor and indoor side respectively, and these leaked-in airs are discharged from again after realizing heat exchange with heat exchanger (22) (31) respectively.
Because the axial flow fan as outdoor fan (32) is equipped with in the inside of outdoor, thereby under the effect of outdoor fan (32), outdoor air flows into by the outdoor intake grill (11) (11) on outdoor two flank side surface of cabinet (10), is arranged to the outside again by outdoor exhaust port (12) again then.The words that above-mentioned outdoor exhaust port (12) is as the criterion with the indoor side are to be positioned at the rear, in other words are the place aheads that is positioned at the outdoor of cabinet.And in said process, outdoor air can produce heat exchange with the refrigeration agent of heat exchanger inside, thereby make refrigeration agent realize condensation by being that condensation contacts with heat exchanger (21) with outdoor heat exchanger, and air then becomes hot air and discharges.
On the other hand, because the centrifugal fan as indoor fan (32) is equipped with in the inside of indoor side, thereby under the effect of this indoor fan (32), indoor air flows into by the indoor side intake grill (13) that forms on lower half portion of cabinet (10) front, then, arrange again to indoor by the vertical indoor side exhaust port (14) that on upper half part of cabinet (10) front, forms again.In this process, indoor air contacts by promptly evaporating with heat exchanger (31) with indoor side heat exchanger, can produce heat exchange with the refrigeration agent of heat exchanger inside, thereby make refrigeration agent realize evaporation, and air then becomes cold air and arranges again to indoor.
As shown in Figure 2, in above-mentioned existing window air conditioner, though indoor side guide element (33) has been installed in the ingress in the turbine fan that is used as indoor fan (32), but the interval between the intake section of the planar surface portion of this indoor side guide element (33) and indoor fan (32) is bigger, thereby make a part of air of discharging easily to the relatively low ingress adverse current of pressure, thereby pneumatic noise is increased, and air quantity reduces.
Summary of the invention
In order to overcome the above-mentioned shortcoming that existing centrifugal fan guide element exists, the invention provides a kind of centrifugal fan guide element with backflow preventing structure, the guide element that its utilization is installed in the ingress of turbine fan prevents that exhausting air is to the ingress of fan adverse current.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of centrifugal fan guide element with backflow preventing structure, comprise supporting portion and air conducting portion, the supporting portion ringwise, be assembled on certain member, be positioned at and air can be sucked vertically, the ingress of the centrifugal fan of discharging along radial direction, air conducting portion is the interior curved surface that is bent to form with certain curvature along part the supporting portion, make the interior structure that faces the centrifugal fan inlet along part of supporting portion, the axial lead of air to fan will be sucked, integrally formed air-flow blocking-up portion between this supporting portion and air conducting portion, air-flow blocking-up portion is near the periphery of centrifugal fan, stop exhausting air to the ingress of fan adverse current, projection from the side, the outside of fan more is partial in the position of supporting portion than the end of air conducting portion, air conducting portion bends to the direction of the periphery of close fan from the end of supporting portion earlier, and then bending round about.
The guide element that utilization of the present invention is installed in the ingress of turbine fan prevents that exhausting air is to the ingress of fan adverse current.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the embodiment's of existing a kind of window air conditioner view in transverse section
Fig. 2 is the organigram of the indoor side guide element of existing window air conditioner
Fig. 3 is an embodiment's of a window air conditioner of the present invention view in transverse section
Fig. 4 is the schematic representation of structure of the indoor side guide element of window air conditioner of the present invention
Fig. 5 is embodiment's the schematic representation of structure of the indoor side guide element of window air conditioner of the present invention
The number in the figure explanation:
10: cabinet 11: the outdoor intake grill
12: outdoor exhaust port 13: the indoor side intake grill
14: indoor side exhaust port 15: dividing plate
20: outdoor heat exchange department 21: compressor
22: condensation heat exchanger 23: outdoor fan (centrifugal fan)
30: indoor side heat exchange department 31: the evaporation heat exchanger
32: indoor fan (centrifugal fan) 34: indoor side air baffle
100,200: indoor side guide element 110,210: supporting portion
120,220: air conducting portion 130,230: air-flow blocking-up portion
Embodiment
Shown in Fig. 3,4,5, the window air conditioner that possesses the centrifugal fan guide element of the present invention comprises cabinet (10), its certain space of inner formation, and this space is separated into indoor side and outdoor; Outdoor heat exchange department (20) is mounted in the inner side of cabinet (10), can produce heat exchange with outdoor air; Indoor side heat exchange department (30) is installed in the inner opposite side of cabinet (10), can produce heat exchange with indoor air.
Form outdoor intake grill (11) on two sides of the outdoor that cabinet (10) is vertical with building walls, the front of the outdoor that cabinet (10) is parallel with building walls forms vertical outdoor exhaust port (12).
In addition, front, indoor side lower half portion of cabinet (10) forms indoor side intake grill (13), and front upper half part of indoor side forms indoor side exhaust port (14).
Outdoor heat exchange department (20) comprises compressor (21), is installed in a side of cabinet (10), is used for refrigeration agent is compressed into the High Temperature High Pressure gaseous state; Condensation is connected with above-mentioned compressor (21) by refrigerant pipe with heat exchanger (22), can produce heat exchange with outdoor air, thereby make gaseous refrigerant change into liquid refrigerant; Outdoor fan (23) is installed in the inboard of condensation with heat exchanger (22), can the suction chamber outer air and the outdoor air that sucks discharged with heat exchanger (22) to above-mentioned condensation.
Indoor side heat exchange department (30) comprises evaporation heat exchanger (31), and it is connected with heat exchanger (22) with the condensation of outdoor heat exchange department (20), can make liquid refrigeration agent change into the gaseous refrigerant of low-temp low-pressure again; Indoor fan (32) is to be made of centrifugal fan, is installed in the inboard of evaporation with heat exchanger (31), can suck indoor air and use heat exchanger (31) to discharge to above-mentioned evaporation the indoor air that sucks.
Above-mentioned evaporation roughly is cuboid with heat exchanger (31), can block the major part of the place ahead vertical surface of indoor side heat exchange department (30), therefore, can be positioned between above-mentioned indoor side intake grill (13) and the exhaust port (14).In addition, what above-mentioned indoor fan (132) adopted is centrifugal fan, thereby indoor air can be sucked from the front by the indoor side intake grill (13) that forms in the front of cabinet (10) lower half portion, and then air is discharged towards the indoor side exhaust port (14) that forms in the front of cabinet (10) upper half part.
In addition, in the centrifugal fan that indoor air can be sucked vertically, discharge along radial direction, indoor fan (32) adopts turbine fan, and be equipped with and can make the stable indoor side guide element (100) that flows into of indoor air at its axial entrance place.Indoor side guide plate (34) is equipped with in the top of indoor fan (32), and this indoor side guide plate (34) can guide the indoor air that flows through above-mentioned indoor fan (32) to indoor side exhaust port (14).
As shown in Figure 4, indoor side guide element (100) comprises supporting portion (110), is to be fixed on cabinet (10) or other member; Air conducting portion (120), inserting turbine fan is the ingress of indoor fan (32), can play the effect of guiding indoor air flows; Air-flow blocking-up portion (130) is to be integral with supporting portion (110) and air conducting portion (120), and forms through bending between supporting portion (110) and air conducting portion (120), and it can stop the air inversion of discharge.
Supporting portion (110) projection from the side, the outside of fan more is partial in its position than the end of air conducting portion (120), air conducting portion (120) forms from the Way in bending to indoor fan (32) of the end of air-flow blocking-up portion described later (130), thereby it has a curved surface with certain curvature.
Air conducting portion (130) forms like this, and promptly the end of (110) bends to the direction of the periphery of close fan from the supporting portion earlier, and then bending round about.
Between outdoor heat exchange department (20) and the indoor side heat exchange department (30) dividing plate (15) is housed, this dividing plate (15) is separated into outdoor and indoor side to the inside of cabinet (10).Fan electromotor (40) is housed on the dividing plate (15), and the both sides running shaft of fan electromotor (40) is connected with indoor fan (32) with outdoor fan (23) respectively, thereby can provide rotating power to them.
For those parts same as the prior art, adopt identical label here.
Unaccounted number in the figure 24 is outdoor guide element (orifice), and 25 is the outdoor air guide plate.
Narrate the working procedure of window air conditioner of the present invention below.
Make air conditioner connect power supply, Driven Compressor (21) circulates thereby refrigeration agent is used in the heat exchanger (31) with heat exchanger (22) and evaporation in condensation.Meanwhile, fan electromotor (40) also is driven, thereby outdoor air and indoor air can be drawn into the outdoor and the indoor side of cabinet (10) respectively.The outdoor air that is inhaled into can be that condensation realizes heat exchange with heat exchanger (22) with outdoor heat exchanger, and the indoor air that is inhaled into can promptly evaporate with heat exchanger (31) with indoor side heat exchanger realizes heat exchange.By heat exchange the state of the refrigeration agent in each heat exchanger (22) (31) is changed, and outdoor air can become hot air and arrange to outdoor in this process, indoor air can become cool air row to indoor.
Here, because the turbine fan as indoor fan (32) is equipped with in the inside of indoor side, thereby air can be drawn into vertically the inside of indoor fan (32), the air major part that is inhaled into the inside of indoor fan (32) can be discharged at action of centrifugal force lower edge radial direction, and these air that are discharged from can be along indoor side air baffle (34) row to indoor side exhaust port (14).On the other hand, those exhausting airs near the ingress of indoor fan (32) produce the tendency to the ingress adverse current of the relatively low fan of pressure, but in the present invention, as shown in Figure 4, the exhausting air of the tendency of these oriented indoor fan (32) ingress adverse currents can be blocked by the air-flow blocking-up portion (130) of indoor side guide element (100), thereby make these air can't adverse current, can flow along indoor side exhaust port (14) direction of indoor side air baffle (34) on the contrary to cabinet (10).
Centrifugal fan guide element with backflow preventing structure of the present invention also can have the sort of structure as shown in Figure 5.
Promptly air baffle (220) bending of indoor side guide element (200) can be made it form certain curved surface, thereby makes the part of above-mentioned air conducting portion (220) play the effect of air-flow blocking-up portion (230).
For this reason, indoor side guide element (200) need have following structure, i.e. supporting portion (210) are fixed on cabinet etc. above the member; Air conducting portion (220) is that the inboard of from the supporting portion (210) forms with the certain curvature bending; Air-flow blocking-up portion (230) is by the curved surface in the outside of air conducting portion (220) is formed the periphery of its close indoor fan (32) along long.
Here, in order to make the periphery of supporting portion (210) projection from the side than the more close indoor fan of end (32) of air conducting portion (220), with the words that axially are as the criterion, supporting portion (210) should can stop the ingress adverse current of exhausting air to indoor fan (32) like this forming on the position near the outlet port of indoor fan (32) more.
Air can be sucked vertically when air-conditioning adopts, during along centrifugal fan that radial direction is discharged, structure of the present invention can stop the air of discharging along radial direction again to the relatively low fan ingress adverse current of pressure, thereby guiding air row is to indoor, therefore, the present invention not only can increase air quantity, and can reduce to clash the pneumatic noise that produces because of exhausting air and suction air.
Of the present invention have a following effect:
Form air-flow blocking-up section on the guiding parts of the present invention, this air-flow blocking-up section can stop along radial direction The air of discharging is again to the porch adverse current of fan, thereby can increase air quantity, thereby improves centrifugal fan And the performance that has adopted the air-conditioner of this centrifugal fan, moreover, the present invention can also reduce because of row Go out that air and air amount clash and the pneumatic noise that produces, thereby bring joyful sense to the user, And then the reliability that improves centrifugal fan and adopted the air-conditioner of this centrifugal fan.
Claims (1)
1, a kind of centrifugal fan guide element with backflow preventing structure, comprise the supporting portion, air conducting portion, the supporting portion ringwise, be assembled on certain member, be positioned at and air can be sucked vertically, the ingress of the centrifugal fan of discharging along radial direction, air conducting portion is by the interior of supporting portion is bent to form a curved surface along part with certain curvature, make the interior structure that faces the centrifugal fan inlet along part of supporting portion, thereby can the axial lead of air to fan will be sucked, it is characterized in that: integrally formed air-flow blocking-up portion (130) between described supporting portion (110) and air conducting portion (120), air-flow blocking-up portion (130) is near the periphery of centrifugal fan (32), thereby can stop exhausting air to the ingress of fan adverse current, projection from the side, the outside of fan more is partial in the position of supporting portion (110) than the end of air conducting portion (120), the end of (110) bends to the direction of the periphery of close fan from the supporting portion earlier in air conducting portion (130), and then bending round about.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410019493XA CN100532862C (en) | 2004-06-09 | 2004-06-09 | Centrifugal fan guide parts with anti-backflow structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410019493XA CN100532862C (en) | 2004-06-09 | 2004-06-09 | Centrifugal fan guide parts with anti-backflow structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1707120A CN1707120A (en) | 2005-12-14 |
| CN100532862C true CN100532862C (en) | 2009-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410019493XA Expired - Fee Related CN100532862C (en) | 2004-06-09 | 2004-06-09 | Centrifugal fan guide parts with anti-backflow structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100532862C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737080A (en) * | 2019-02-19 | 2019-05-10 | 苏州众志新环冷却设备有限公司 | An exhaust cooling device |
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2004
- 2004-06-09 CN CNB200410019493XA patent/CN100532862C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1707120A (en) | 2005-12-14 |
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Granted publication date: 20090826 Termination date: 20100609 |