CN109058170B - Fan and air conditioner - Google Patents
Fan and air conditioner Download PDFInfo
- Publication number
- CN109058170B CN109058170B CN201811243711.6A CN201811243711A CN109058170B CN 109058170 B CN109058170 B CN 109058170B CN 201811243711 A CN201811243711 A CN 201811243711A CN 109058170 B CN109058170 B CN 109058170B
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- China
- Prior art keywords
- volute
- section
- volute tongue
- outer air
- air duct
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- 230000002093 peripheral effect Effects 0.000 claims description 35
- 210000002105 tongue Anatomy 0.000 description 168
- 230000000694 effects Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/422—Discharge tongues
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
-
- 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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/40—Vibration or noise prevention at outdoor units
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a fan and an air conditioner, and relates to the technical field of volutes. A fan comprises a volute cover, a volute seat, a volute cover volute tongue and a volute seat volute tongue. The volute cover and the volute seat are detachably connected and jointly enclose an outer air channel. The volute cover volute tongue is convexly arranged on the volute cover and comprises a first volute tongue section and a second volute tongue section. The first volute tongue section is arranged on the inner side of the outer air channel and extends along the axis of the outer air channel, and the second volute tongue section extends from the end part of the first volute tongue section along the axis of the outer air channel. The first volute tongue section is higher than the second volute tongue section. The extension length of the first volute tongue section is equal to the extension length of the volute casing seat volute tongue. The volute casing seat volute tongue is convexly arranged on the volute casing seat and arranged on the inner side of the outer air duct, and the volute casing seat volute tongue is connected with the first volute tongue section. An air conditioner adopts the fan. The fan and the air conditioner provided by the invention can improve the phenomenon of volute wind and reduce noise.
Description
Technical Field
The invention relates to the technical field of volutes, in particular to a fan and an air conditioner.
Background
The outside air duct of the mobile air conditioner consists of two parts, namely a volute cover and a volute seat, wherein one half of the inner cavity of the existing outside air duct is covered by the volute, the other half of the inner cavity of the existing outside air duct is covered by the volute seat, and the outside air duct opening and the volute tongue are smoothly transited to the outside air duct opening by the volute tongue opening, so that a vortex wind phenomenon is easy to generate, the volute tongue angle is not matched with the angle of the wind wheel blade, and the noise reduction effect is poor.
Disclosure of Invention
In view of the above, the present invention is directed to a fan to improve the wind phenomenon of the outside wind channel and reduce the noise of the fan.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
A fan comprises a volute cover, a volute seat, a volute cover volute tongue and a volute seat volute tongue. The spiral case lid with spiral case seat can dismantle the connection to enclose into the wind channel jointly, the wind channel is including outside wind channel and the inboard wind channel that is linked together, the inboard wind channel is annular, outside wind channel tangent in the inboard wind channel draws forth, wherein, by outside wind channel inside orientation outside wind channel opening extends the direction be the first direction, and the first direction is on a parallel with the axis of outside wind channel. The volute casing cover is provided with a volute casing tongue in a protruding mode, and the volute casing cover volute tongue comprises a first volute tongue section and a second volute tongue section. The first volute tongue section is arranged on the inner side of the outer air duct and extends along the first direction, and the second volute tongue section extends along the first direction from the end part of the first volute tongue section along the first direction. The first volute tongue section is higher than the second volute tongue section. The length of the first volute tongue section extending along the first direction is equal to the length of the volute receptacle volute tongue extending along the first direction. The volute casing seat volute tongue is convexly arranged on the volute casing seat, the volute casing seat volute tongue is arranged on the inner side of the outer air duct, and when the volute casing seat is connected with the volute casing cover, the volute casing seat volute tongue is connected with the first volute tongue section.
Further, the length of the first volute tongue section extending along the first direction is 8 mm-20 mm. The length of the volute seat volute tongue extending along the first direction is 8-20 mm.
Further, the distance from the end part of the first volute tongue section along the first direction to the opening of the outer air channel is 10 mm-25 mm. The distance from the end part of the volute casing seat volute tongue along the first direction to the opening of the outer air duct is 10-25 mm.
Further, a distance from the end of the first volute tongue section along the first direction to the opening of the outer air duct is L 1, and a distance from the end of the volute seat volute tongue along the first direction to the opening of the outer air duct is L 2,L1＝L2.
Further, the height of the first volute tongue section is 4-15 mm. The height of the second volute tongue section is 4-15 mm. The height of the volute tongue of the volute seat is 4-15 mm.
Further, the height of the first volute tongue section is H 1, the height of the second volute tongue section is H 2, and the height of the volute casing seat volute tongue is H 3,H1＝H2＝H3.
Further, the first volute tongue section includes a first extension section and a first connection section. The first extension section is arc-shaped and protrudes towards the inside of the outer air duct. The first connecting section extends from the end part of the first extending section and is connected with the second volute tongue section, and the distance between the first connecting section and the axis of the outer air duct is gradually increased along the extending direction of the first connecting section.
Further, the second volute tongue section includes a second extension section and a second connection section. The second extension section extends out from the end of the first volute tongue section in a straight mode. The second connecting section extends from the end part of the second extending section and is connected with the inner peripheral wall of the outer air duct, and the distance between the second connecting section and the axis of the outer air duct is gradually increased along the extending direction of the second connecting section.
Further, the volute receptacle volute tongue includes a third extension segment and a third connection segment. The third extension section is arc-shaped and protrudes towards the inside of the outer air duct. The third connecting section extends obliquely from the end part of the third extending section and is connected with the inner peripheral wall of the outer air duct, and the distance between the third connecting section and the axis of the outer air duct is gradually increased along the extending direction of the third connecting section.
Compared with the prior art, the fan provided by the invention has the following advantages:
(1) According to the fan, the first volute tongue section and the second volute tongue section are arranged to jointly form the volute cover volute tongue, the first volute tongue section and the second volute tongue section are stepped relative to the height of the inner peripheral wall of the outer air channel, so that the two-section volute tongue can be formed, the smooth air outlet can be ensured by arranging the two-section volute tongue, the phenomenon of the volute of the outer air channel can be improved, and meanwhile noise can be reduced better.
(2) The fan can further ensure that air flow can smoothly enter the outside air duct through the arc-shaped extension of the first extension section, so that the air flow in the outside air duct can be further ensured to flow smoothly. The first connecting part and the second extending part extend obliquely and flatly to form an inclined plane together, and the inclined plane is formed between the second connecting part extending obliquely and the inner peripheral wall of the outer air duct, so that the smooth flow of air flow is further ensured, the phenomenon of volute wind is further improved, and the noise is reduced.
Another object of the present invention is to provide an air conditioner, which is capable of improving the air flow phenomenon in the outside air duct and reducing the fan noise.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
An air conditioner includes a blower. The fan comprises a volute cover, a volute seat, a volute cover volute tongue and a volute seat volute tongue. The spiral case lid with spiral case seat can dismantle the connection to enclose into the wind channel jointly, the wind channel is including outside wind channel and the inboard wind channel that is linked together, the inboard wind channel is annular, outside wind channel tangent in the inboard wind channel draws forth, wherein, by outside wind channel inside orientation outside wind channel opening extends the direction be the first direction, and the first direction is on a parallel with the axis of outside wind channel. The volute casing cover is provided with a volute casing tongue in a protruding mode, and the volute casing cover volute tongue comprises a first volute tongue section and a second volute tongue section. The first volute tongue section is arranged on the inner side of the outer air duct and extends along the first direction, and the second volute tongue section extends along the first direction from the end part of the first volute tongue section along the first direction. The first volute tongue section is higher than the second volute tongue section. The length of the first volute tongue section extending along the first direction is equal to the length of the volute receptacle volute tongue extending along the first direction. The volute casing seat volute tongue is convexly arranged on the volute casing seat, the volute casing seat volute tongue is arranged on the inner side of the outer air duct, and when the volute casing seat is connected with the volute casing cover, the volute casing seat volute tongue is connected with the first volute tongue section.
Compared with the prior art, the air conditioner has the same advantages as the fan in the prior art, and the description is omitted here.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of a fan according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a volute cover according to an embodiment of the invention;
FIG. 3 is a schematic view of a volute receptacle according to an embodiment of the present invention;
FIG. 4 is an enlarged schematic view at IV in FIG. 2;
fig. 5 is an enlarged schematic view at V in fig. 3.
Reference numerals illustrate:
1-fan, 2-volute cover, 3-volute seat, 4-volute cover volute tongue, 5-volute seat volute tongue, 6-first volute tongue section, 7-second volute tongue section, 8-first extension section, 9-first connection section, 10-second extension section, 11-second connection section, 12-third extension section, 13-third connection section, 14-air duct, 15-outside air duct, 16-inside air duct.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
First embodiment
Referring to fig. 1, a fan 1 is provided in the present embodiment, which is applied to an air conditioner (not shown), and the fan 1 can improve the wind phenomenon of the fan 1 and achieve the effect of noise reduction.
Referring to fig. 1,2 and 3 in combination, the fan 1 includes a volute cover 2, a volute receptacle 3, a volute cover volute tongue 4 and a volute receptacle volute tongue 5. Wherein the volute cover 2 and the volute receptacle 3 can be detachably connected and together form an air duct 14.
The air duct 14 includes an inner air duct 16 and an outer air duct 15, and the inner air duct 16 is in communication with the outer air duct 15. Wherein the inside wind channel 16 is provided with the wind wheel of fan 1 inside, and the wind wheel can rotate and produce the air current that flows inside wind channel 16 to make the air current lead out fan 1 from outside wind channel 15. In this embodiment, the inner air duct 16 is substantially annular, the outer air duct 15 is led out tangentially to the inner air duct 16, and the shape enclosed by the inner peripheral wall of the outer air duct 15 is substantially cylindrical, wherein the direction extending from the inside of the outer air duct 15 toward the opening of the outer air duct 15 is a first direction, and the first direction is parallel to the axis of the outer air duct 15.
The volute cover volute tongue 4 is convexly arranged on the volute cover 2, that is, the volute cover volute tongue 4 is convexly arranged on the inner peripheral wall of the outer air channel 15 so as to conduct the air flow through the volute cover volute tongue 4, and the volute cover volute tongue 4 is arranged on the inner side of the outer air channel 15, that is, on one side, close to the inner air channel 16, of the outer air channel 15. The volute casing base volute tongue 5 is convexly arranged on the volute casing base 3, that is, the volute casing base volute tongue 5 is convexly arranged on the inner peripheral wall of the outer air duct 15 so as to conduct diversion action on air flow through the volute casing cover volute tongue 4, and the volute casing base volute tongue 5 is arranged on the inner side of the outer air duct 15. In addition, when the volute cover 2 is connected with the volute seat 3, the volute cover volute tongue 4 is connected with the volute seat volute tongue 5, namely the volute cover volute tongue 4 is spliced with the volute seat volute tongue 5, so that the airflow can be guided, and the purposes of improving the phenomenon of volute wind and reducing noise are achieved.
Referring to fig. 2, 3, 4 and 5, in the present embodiment, the volute cover volute tongue 4 includes a first volute tongue section 6 and a second volute tongue section 7, the first volute tongue section 6 is disposed inside the outer air channel 15, and the first volute tongue section 6 extends from inside the outer air channel 15 along a first direction, that is, the first volute tongue section 6 extends from inside the outer air channel 15 along an axis of the outer air channel 15. The second volute tongue section 7 extends from the end of the first volute tongue section 6 along the first direction along the axis of the outer air channel 15, i.e. the second volute tongue section 7 is arranged at one end of the first volute tongue section 6 away from the inner air channel 16. In this embodiment, the first volute tongue section 6 is higher than the second volute tongue section 7, and when the axis of the outer air duct 15 is used as a reference, the distance between the first volute tongue section 6 and the axis of the outer air duct 15 is smaller than the distance between the second volute tongue section 7 and the axis of the outer air duct 15, so that the volute cover volute tongue 4 forms a two-section volute tongue. When the volute cover 2 and the volute receptacle 3 are connected to each other, the volute receptacle volute tongue 5 is spliced with the first volute tongue section 6. By arranging the volute cover volute tongue 4 as the two-section volute tongue, smooth guiding can be performed on airflow through the two-section volute tongue, the phenomenon of the volute of the fan 1 can be improved, the smoothness of the airflow can be ensured, and the purpose of noise reduction is achieved.
In the present embodiment, the extension length of the first volute tongue section 6 is equal to the extension length of the volute receptacle volute tongue 5. The extending length of the first volute tongue section 6 refers to the length of the first volute tongue section 6 extending along the first direction, in other words, the length of the first volute tongue section 6 extending along the axis of the outer air duct 15, that is, the projection length of the first volute tongue section 6 on the straight line where the axis of the outer air duct 15 is located; the extension length of the volute receptacle scroll 5 refers to the length of the volute receptacle scroll 5 extending along the first direction, in other words, the length of the volute receptacle scroll 5 extending along the axis of the outer air duct 15, that is, the projection length of the volute receptacle scroll 5 on the line where the axis of the outer air duct 15 is located.
Specifically, the extension length of the first volute tongue section 6 is 8 mm-20 mm. Similarly, the extension length of the volute casing seat volute tongue 5 is 8-20 mm. Wherein the extension length of the first volute tongue section 6 may be 10mm, 12mm, 15mm or the like; similarly, the extension length of the volute receptacle volute tongue 5 can be 10mm, 12mm or 15mm, etc.
By setting the extension length of the first volute tongue section 6 and the extension length of the volute casing seat volute tongue 5 to be equal, when the first volute tongue section 6 and the volute casing seat volute tongue 5 are spliced, gaps can be avoided, flatness after the first volute tongue section 6 and the volute casing seat volute tongue 5 are spliced is ensured, and smooth diversion effect to airflow can be ensured.
Wherein in the present embodiment the first volute tongue section 6 comprises a first extension section 8 and a first connection section 9. The first extension 8 is substantially arc-shaped, and the first extension 8 protrudes toward the inside of the outside air duct 15. The first connecting section 9 extends obliquely from the end of the first extending section 8, and the first connecting section 9 is connected to the second volute tongue section 7. Wherein, due to the oblique extension of the first connecting section 9, the distance between the first connecting section 9 and the axis of the outer air duct 15 gradually increases along the extension direction thereof. Moreover, the first volute tongue section 6 and the second volute tongue section 7 lower than the first volute tongue section 6 can be connected by the first connecting portion 9 extending obliquely, so that the volute cover volute tongue 4 can be ensured to be smooth in guiding the airflow.
In addition, in the present embodiment, the volute receptacle scroll 5 includes a third extension 12 and a third connection 13. The third extension 12 is substantially arc-shaped, and the third extension 12 protrudes toward the inside of the outside air duct 15. The third connecting section 13 extends obliquely from an end of the third extending section 12, and the third connecting section 13 is connected with an inner peripheral wall of the outer air duct 15. Due to the oblique extension of the third connecting section 13, the distance between the third connecting section 13 and the axis of the outer air duct gradually increases along the extension direction thereof.
In the present embodiment, the bending amplitude and the inner diameter of the arc formed by the first extension 8 and the third extension 12 are the same, and the extension length of the first extension 8 and the extension length of the third extension 12 are the same. Similarly, the extending direction of the first connecting section 9 and the extending direction of the third connecting section 13 are the same, and the extending length of the first connecting section 9 and the extending length of the third connecting section 13 are the same. So that when the volute cover 2 and the volute seat 3 are connected, the first volute tongue section 6 and the volute seat volute tongue 5 can be tightly attached, and the first volute tongue section 6 and the volute seat volute tongue 5 can be smoothly spliced, so that the purpose of smoothly guiding air flow is achieved. In other words, in the present embodiment, the distance from the end of the first volute tongue section 6 along the first direction to the opening of the outer air duct 15 is L 1, and the distance from the end of the volute receptacle volute tongue 5 along the first direction to the opening of the outer air duct 15 is L 2, where L 1＝L2.
Since the first connecting section 9 and the third connecting section 13 are substantially flat, and the inner peripheral wall of the outer air duct 15 is substantially cylindrical. Such that the profile of the side edges of the first connecting section 9 and the third connecting section 13 facing away from each other is arc-shaped.
In addition, in the present embodiment, the distance from the end of the first volute tongue section 6 in the first direction to the opening of the outer air channel 15 is 10mm to 25mm. In other words, it can also be regarded that the sum of the length of the second volute tongue section 7 and the length of the end portion of the second volute tongue section 7 in the first direction to the opening of the outer air duct 15 is 10mm to 25mm. The distance from the end of the first volute tongue 6 in the first direction to the opening of the outer air channel 15 may be 10mm, 15mm, 18mm, 20mm, etc.
The distance from the outer end of the volute base volute tongue 5 to the opening of the outer air duct 15 is 10-25 mm, i.e., the distance from the end of the volute base volute tongue 5 in the first direction to the opening of the outer air duct 15 is 10-25 mm. In this embodiment, the distance from the end of the volute receptacle volute tongue 5 to the opening of the outer air duct 15 may be 10mm, 15mm, 18mm, 20mm, or the like.
The second volute tongue 7 comprises a second extension 10 and a second connection 11. The second extension 10 extends straight from the end of the first connection section 9 of the first volute tongue section 6, i.e. the extension direction of the second extension 10 is parallel to the axis of the outer air channel 15. The second connecting section 11 extends obliquely from the end of the second extending section 10 and is connected to the inner peripheral wall of the outer air duct 15. Due to the oblique extension of the second connecting section 11, the distance between the second connecting section 11 and the axis of the outer air duct 15 increases gradually along the extension direction thereof. And, through the slant extension of second linkage segment 11, make the smooth connection between second volute tongue section 7 and the inner peripheral wall of outside wind channel 15, be favorable to the stable direction of second volute tongue section 7 to the air current.
It should be noted that, since the second connecting section 11 is substantially flat, and the inner peripheral wall of the outer air duct 15 is substantially cylindrical, the outer contour of the second connecting section 11 away from the second extending section 10 is curved, and the end of the curve is connected to the outer contour of the third connecting section 13. In addition, the profile of both sides of the second extension 10 is likewise arc-shaped.
In this embodiment, the height of the first volute tongue section 6 is H 1,H1 =4 mm-15 mm, and the height of the first volute tongue section 6 refers to the height of the first extension section 8 relative to the second extension section 10 along the radial direction of the outer air duct 15. In this embodiment, the height of the first volute tongue section 6 relative to the second volute tongue section 7 may be 4mm, 6mm, 10mm, 12mm, or the like.
The height of the second volute tongue section 7 is H 2,H2 =4 mm-15 mm, the height of the second volute tongue section 7 refers to the height of the second extension section 10 relative to the inner peripheral wall of the outer air duct 15, and it should be noted that, because the outer air duct 15 is cylindrical, both ends of the second extension section 10 intersect with the inner peripheral wall of the outer air duct 15, where the height of the second extension section 10 relative to the inner peripheral wall of the outer air duct 15 refers to the height of the middle part of the second extension section 10 relative to the inner peripheral wall of the outer air duct 15. In this embodiment, the height of the second volute tongue section 7 with respect to the inner peripheral wall of the outer air duct 15 may be 4mm, 6mm, 10mm, 12mm, or the like.
The height of the volute casing seat volute tongue 5 is H 3,H3 =4 mm-15 mm. The height of the volute receptacle volute tongue 5 relative to the inner peripheral wall of the outer air duct 15 refers to the height of the third extension 12 relative to the inner peripheral wall of the outer air duct 15. In this embodiment, the height of the volute receptacle scroll 5 with respect to the inner peripheral wall of the outer air duct 15 may be 4mm, 6mm, 10mm, 12mm, or the like.
Further, in the present embodiment, H 1＝H2＝H3.
In addition, in this embodiment, the first volute tongue section 6 and the second volute tongue section 7 form an included angle α 1, where the included angle formed by the first volute tongue section 6 and the second volute tongue section 7 refers to an included angle formed between the first connecting section 9 and the second extending section 10, that is, an included angle formed by a straight line where the extending direction of the first connecting section 9 is located and a straight line where the extending direction of the second extending section 10 is located.
An included angle α 2 is formed between the second volute tongue section 7 and the inner peripheral wall of the outer air duct 15, wherein the included angle formed between the second volute tongue section 7 and the inner peripheral wall of the outer air duct 15 means that an included angle is formed between the second connecting section 11 and the inner peripheral wall of the outer air duct 15, that is, an included angle formed by the straight line where the extending direction of the second connecting section 11 is located and the inner peripheral wall of the outer air duct 15 directly and jointly. In this embodiment, since the second connecting section 11 is substantially flat, and both sides of the second connecting section 11 are connected to the inner peripheral wall of the outer air duct 15, the included angle is formed between the middle portion of the second connecting section 11 and the inner peripheral wall of the outer air duct 15.
An included angle α 3 is formed between the volute casing volute tongue 5 and the inner peripheral wall of the outer air duct 15, wherein the included angle formed between the volute casing tongue 5 and the inner peripheral wall of the outer air duct 15 refers to an included angle formed between the third connecting section 13 and the inner peripheral wall of the outer air duct 15, that is, an included angle formed between a straight line where the extending direction of the third connecting section 13 is located and the inner peripheral wall of the outer air duct 15.
In this embodiment, α 1＝α3, that is, the included angle formed between the first connecting section 9 and the second extending section 10 is equal to the included angle formed between the third connecting section 13 and the inner peripheral wall of the outer air duct 15, that is, the extending direction of the first connecting section 9 is identical to the extending direction of the third connecting section 13, so that when the volute cover 2 is connected with the volute base 3, the first connecting section 9 and the third connecting section 13 can be tightly spliced, so as to ensure the smoothness of the splice between the first volute tongue section 6 and the volute base volute tongue 5, and further ensure the smoothness of guiding the airflow.
Wherein, the value range of alpha 1 is 90-160 degrees, and the value range of alpha 3 is 90-160 degrees in the same way. In this embodiment, α 1＝α3 =150°. It should be appreciated that in other embodiments, α 1 and α 3 may take other values, such as 90 °, 120 °, 145 °, or the like.
In addition, the value range of alpha 2 is 90-135 deg. That is, in the present embodiment, the value of α 2 may be 90 °, 120 °, 135 °, or the like.
The fan 1 provided in this embodiment can jointly form the volute cover volute 4 by setting the first volute tongue section 6 and the second volute tongue section 7, and the first volute tongue section 6 and the second volute tongue section 7 are in a step shape relative to the height of the inner peripheral wall of the outer air duct 15, so that two sections of volute tongues can be formed, and by setting the two sections of volute tongues, smooth air outlet can be ensured, the phenomenon of the volute of the outer air duct 15 can be improved, and meanwhile noise can be reduced better. By providing the first volute tongue section 6 with an extension equal to the extension of the volute receptacle volute tongue 5. And through setting up alpha 1＝α3 for the planarization that spiral case seat volute tongue 5 and first volute tongue section 6 spliced mutually, and then make outside wind channel 15 to the air current flow direction more smooth and easy. In addition, through the arc-shaped extension of the first extension section 8, the air flow can be further ensured to smoothly enter the outer air duct 15, so that the air flow in the outer air duct 15 is further ensured to be smooth. The first connecting section 9 and the second extending section 10 which extend horizontally form an inclined plane together, and the second connecting section 11 which extends obliquely and the inner peripheral wall of the outer air duct 15 form an inclined plane therebetween, so that the smooth flow of air flow is further ensured, the phenomenon of volute wind is further improved, and the noise is reduced.
Second embodiment
In this embodiment, an air conditioner (not shown) is provided, which adopts the fan 1 provided in the first embodiment, and this air conditioner can improve the air-blowing phenomenon of the outside air duct 15 and reduce the noise of the fan 1.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. The fan is characterized by comprising a volute cover, a volute seat, a volute cover volute tongue and a volute seat volute tongue;
The volute cover and the volute seat are detachably connected and jointly enclose an air channel, the air channel comprises an outer air channel and an inner air channel which are communicated, the inner air channel is annular, the outer air channel is tangent to the inner air channel and led out, the extending direction from the inner part of the outer air channel to the opening of the outer air channel is a first direction, and the first direction is parallel to the axis of the outer air channel;
The volute casing cover volute tongue is convexly arranged on the volute casing cover, and the volute casing cover volute tongue comprises a first volute tongue section and a second volute tongue section;
The first volute tongue section is arranged on the inner side of the outer air duct and extends along the first direction, and the second volute tongue section extends along the first direction from the end part of the first volute tongue section along the first direction; the first volute tongue section is higher than the second volute tongue section;
The length of the first volute tongue section extending along the first direction is equal to the length of the volute receptacle volute tongue extending along the first direction;
The volute casing seat volute tongue is convexly arranged on the volute casing seat, the volute casing seat volute tongue is arranged on the inner side of the outer air duct, and when the volute casing seat is connected with the volute casing cover, the volute casing seat volute tongue is connected with the first volute tongue section;
the first volute tongue section comprises a first extension section and a first connection section;
the first extension section is arc-shaped and protrudes towards the inside of the outer air duct;
The first connecting section extends from the end part of the first extending section and is connected with the second volute tongue section, and the distance between the first connecting section and the axis of the outer air channel is gradually increased along the extending direction of the first connecting section;
the second volute tongue section comprises a second extension section and a second connection section;
the second extension section extends out from the end part of the first volute tongue section in a straight way;
the second connecting section extends from the end part of the second extending section and is connected with the inner peripheral wall of the outer air duct, and the distance between the second connecting section and the axis of the outer air duct is gradually increased along the extending direction of the second connecting section.
2. The fan of claim 1, wherein the first volute tongue section extends 8mm to 20mm in length along the first direction;
the length of the volute seat volute tongue extending along the first direction is 8-20 mm.
3. The fan of claim 1, wherein a distance from an end of the first volute tongue section in the first direction to an opening of the outer air duct is 10 mm-25 mm;
The distance from the end part of the volute casing seat volute tongue along the first direction to the opening of the outer air duct is 10 mm-25 mm.
4. A fan according to claim 1 or claim 3, wherein the distance from the end of the first volute tongue section in the first direction to the opening of the outer air duct is L 1, and the distance from the end of the volute tongue section in the first direction to the opening of the outer air duct is L 2,L1=L2.
5. The fan of claim 1, wherein the first volute tongue section has a height of 4mm to 15mm;
The height of the second volute tongue section is 4-15 mm;
The height of the volute tongue of the volute seat is 4 mm-15 mm.
6. The fan of claim 1 or 5, wherein the first volute tongue section has a height H 1, the second volute tongue section has a height H 2, and the volute receptacle volute tongue has a height H 3,H1=H2=H3.
7. The fan of claim 1, wherein the volute receptacle scroll comprises a third extension and a third connection section;
the third extension section is arc-shaped and protrudes towards the inside of the outer air duct;
The third connecting section extends obliquely from the end part of the third extending section and is connected with the inner peripheral wall of the outer air duct, and the distance between the third connecting section and the axis of the outer air duct is gradually increased along the extending direction of the third connecting section.
8. An air conditioner comprising the blower according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811243711.6A CN109058170B (en) | 2018-10-24 | 2018-10-24 | Fan and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811243711.6A CN109058170B (en) | 2018-10-24 | 2018-10-24 | Fan and air conditioner |
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| Publication Number | Publication Date |
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| CN109058170A CN109058170A (en) | 2018-12-21 |
| CN109058170B true CN109058170B (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811243711.6A Active CN109058170B (en) | 2018-10-24 | 2018-10-24 | Fan and air conditioner |
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| Country | Link |
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| CN (1) | CN109058170B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611951B (en) * | 2019-01-24 | 2024-06-04 | Tcl空调器(中山)有限公司 | Cabinet air conditioner |
| CN114046270A (en) * | 2021-12-15 | 2022-02-15 | 广东美的白色家电技术创新中心有限公司 | Centrifugal fan and electrical equipment |
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| Publication number | Publication date |
|---|---|
| CN109058170A (en) | 2018-12-21 |
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