CN108931043B - Air duct structure and air conditioner - Google Patents
Air duct structure and air conditioner Download PDFInfo
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- CN108931043B CN108931043B CN201811245961.3A CN201811245961A CN108931043B CN 108931043 B CN108931043 B CN 108931043B CN 201811245961 A CN201811245961 A CN 201811245961A CN 108931043 B CN108931043 B CN 108931043B
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- air duct
- section
- tongue
- volute
- volute tongue
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Classifications
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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
- F24F13/02—Ducting arrangements
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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
- F24F13/24—Means for preventing or suppressing noise
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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
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Duct Arrangements (AREA)
Abstract
The invention provides an air duct structure and an air conditioner, and relates to the technical field of air conditioners. The air duct structure comprises a first air duct and a second air duct which are communicated with each other; the second air duct is provided with a first volute tongue and a second volute tongue, one end part of the first volute tongue is close to the second air duct, the other end part of the first volute tongue is connected with one end part of the second volute tongue, and the other end part of the second volute tongue is close to an air outlet of the second air duct; the inclination angles of the first volute tongue and the second volute tongue on the same section are respectively a first inclination angle and a second inclination angle, wherein the first inclination angle is 90-160 degrees, and the second inclination angle is 90-135 degrees; the first section height of the first volute tongue and the second volute tongue on the same section is equal to the second section height. The air duct structure and the air conditioner provided by the invention can ensure smooth air outlet and simultaneously reduce noise better.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air duct structure and an air conditioner.
Background
The movable air conditioner breaks through the traditional design concept, has small body shape, high energy efficiency ratio, low noise and no need of installation, and can be placed in different houses at will.
The outer air channel of the mobile air conditioner can be composed of a volute cover and a volute seat, one half of the inner cavity of the existing outer air channel is arranged on the volute cover, the other half of the inner cavity of the existing outer air channel is arranged on the volute seat, and the volute cover is matched with the volute seat to form the outer air channel. The outside air duct is provided with a volute tongue, but the volute tongue still can cause a volute phenomenon, and high noise is generated.
Disclosure of Invention
In view of the above, the present invention aims to provide an air duct structure, which can ensure smooth air outlet and better noise reduction.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the utility model provides an air duct structure, air duct structure includes spiral case lid and spiral case seat, be provided with first tongue on the spiral case lid, be provided with the second tongue on the spiral case seat, spiral case lid with spiral case seat can dismantle the connection to form first wind channel and the second wind channel of mutual intercommunication, first tongue with the second tongue is connected and is formed first tongue, spiral case lid is provided with the second tongue. The first tongue body and the second tongue body extend outwards from the air duct opening of the first air duct, and the second volute tongue is arranged towards the air duct opening of the second air duct. The first volute tongue is provided with a first inclination angle and a first section height, the second volute tongue is provided with a second inclination angle and a second section height, the value range of the first inclination angle is 90-160 degrees, the value range of the second inclination angle is 90-135 degrees, and the value ranges of the first section height and the second section height are both 4-15 millimeters.
Optionally, the first volute tongue includes a first extension section and set up in the first slope section of first extension section, first extension section follow the wind channel mouth in first wind channel is to the second wind channel extends, first slope section set up in the second volute tongue, first slope section is in the height of reference section is the first cross-section height, the inclination of first slope section is first inclination.
Optionally, the second volute tongue includes a second extension section and set up in the second slope section of second extension section, the second extension section set up in first slope section and extend to the second slope section, the second slope section set up in the inner wall of second wind channel, the second slope section is in the height of reference section is the second section height, the second slope section relative the inclination of second extension section is the second inclination.
Optionally, the first inclination angle is larger than the second inclination angle.
Optionally, the range of values of the first section height and the second section height is 4-15 mm.
Optionally, the air outlet of the second air duct is provided with an air outlet section, the length of the air outlet section along the axis of the second air duct is smaller than or equal to the length of the second volute tongue, and the length of the air outlet section along the axis of the second air duct is also smaller than or equal to the length of the first volute tongue along the axis of the second air duct.
Optionally, the length of the first volute tongue along the second air duct axis is greater than or equal to the length of the second volute tongue along the second air duct axis.
Optionally, the length of the air outlet section ranges from 4 mm to 10 mm, the length of the first volute tongue ranges from 8 mm to 20 mm, and the length of the second volute tongue ranges from 6 mm to 15 mm.
Optionally, the length of the first tongue is greater than the length of the second tongue, and the length of the first tongue is also greater than or equal to the length of the second volute tongue.
An air conditioner comprises an air duct structure. The air duct structure comprises a volute cover and a volute seat, wherein a first tongue body is arranged on the volute cover, a second tongue body is arranged on the volute seat, the volute cover and the volute seat are detachably connected, a first air duct and a second air duct which are mutually communicated are formed, the first tongue body is connected with the second tongue body to form a first volute tongue, and the volute cover is provided with a second volute tongue. The first tongue body and the second tongue body extend outwards from the air duct opening of the first air duct, and the second volute tongue is arranged towards the air duct opening of the second air duct. The first volute tongue is provided with a first inclination angle and a first section height, the second volute tongue is provided with a second inclination angle and a second section height, the value range of the first inclination angle is 90-160 degrees, the value range of the second inclination angle is 90-135 degrees, and the value ranges of the first section height and the second section height are both 4-15 millimeters.
Compared with the prior art, the air duct structure has the following advantages:
when the air duct structure is applied to the fan structure, the wind wheel is installed close to the first air duct, and air flow is discharged from the first air duct to the second air duct and from the air outlet of the second air duct. That is, the first air duct is located on the inner side, and the second air duct is located on the outer side. When the existing air duct is used, the second air duct on the outer side is easy to generate a volute phenomenon, so that exhaust air and noise are influenced. According to the air duct structure, the first inclination angle is a value in the range of 90-135 degrees, the second inclination angle is a value in the range of 90-160 degrees, and the value ranges of the section heights of the first volute tongue and the second volute tongue are all 4-15 millimeters; when the air flow passes through the first volute tongue and the second volute tongue, no volute phenomenon is generated, and air outlet is smooth. Meanwhile, when the heights of the first section and the second section of the first volute tongue and the second volute tongue are valued in the range, and the first inclination angle and the second inclination angle are valued in the range, the noise of air flow can be reduced. When the air duct structure provided by the invention is applied to an air conditioner, the noise of the air conditioner can be reduced, and the running low noise of the air conditioner is ensured.
Another object of the present invention is to provide an air conditioner, which can ensure smooth air outlet and better noise reduction.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
an air conditioner comprises an air duct structure. The air duct structure comprises a volute cover and a volute seat, wherein a first tongue body is arranged on the volute cover, a second tongue body is arranged on the volute seat, the volute cover and the volute seat are detachably connected, a first air duct and a second air duct which are mutually communicated are formed, the first tongue body is connected with the second tongue body to form a first volute tongue, and the volute cover is provided with a second volute tongue. The first tongue body and the second tongue body extend outwards from the air duct opening of the first air duct, and the second volute tongue is arranged towards the air duct opening of the second air duct. The first volute tongue is provided with a first inclination angle and a first section height, the second volute tongue is provided with a second inclination angle and a second section height, the value range of the first inclination angle is 90-160 degrees, the value range of the second inclination angle is 90-135 degrees, and the value ranges of the first section height and the second section height are both 4-15 millimeters.
The air conditioner has the same advantages as the air duct structure compared with the prior art, and the description is omitted herein.
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 structural diagram of an air duct structure according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the structure at II in FIG. 1;
FIG. 3 is a schematic view of the structures of the first volute tongue and the second volute tongue according to the embodiment of the invention;
FIG. 4 is a schematic structural diagram of a first air duct and a second air duct according to an embodiment of the present invention;
FIG. 5 is an enlarged schematic view of the structure shown at V in FIG. 4;
FIG. 6 is a schematic diagram of length labels of an air outlet section, a first volute tongue and a second volute tongue according to an embodiment of the present invention;
FIG. 7 is a schematic illustration of the first volute tongue and the second volute tongue according to the embodiment of the invention with the same cross section;
fig. 8 is a schematic illustration of labeling of a first inclination angle and a second inclination angle according to an embodiment of the present invention.
Icon: 1-an air duct structure; 2-a first air duct; 3-a second air duct; 4-a first volute tongue; 5-a second volute tongue; 6-a first extension; 7-a first inclined section; 8-a second extension; 9-a second sloped section; 10-an air outlet section; 11-volute cover; 12-a volute receptacle; 13-a first tongue; 14-a second tongue; 15-centrifugal wind wheel.
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 to 8, the present embodiment provides an air duct structure 1, which can ensure smooth air outlet and better noise reduction.
It should be noted that, the air duct structure 1 provided in this embodiment may be used in a fan structure to ensure air outlet of a fan and reduce noise of the fan. Further, the air duct structure 1 provided in this embodiment may be used in an air conditioner to ensure smooth air outlet of the air conditioner, and also enable the air conditioner to reduce noise better.
Referring to fig. 1 to 4 in combination, the air duct structure 1 provided in this embodiment includes a volute cover 11 and a volute seat 12, a first tongue 13 is disposed on the volute cover 11, a second tongue 14 is disposed on the volute seat 12, the volute cover 11 and the volute seat 12 are detachably connected to form a first air duct 2 and a second air duct 3 that are mutually communicated, the first tongue 13 is connected with the second tongue 14 to form a first tongue 4, and the volute cover 11 is provided with a second tongue 5. The first tongue body 13 and the second tongue body 14 are arranged to extend outwards from the air duct opening of the first air duct 2, and the second volute tongue 5 is arranged towards the air duct opening of the second air duct 3. The first volute tongue 4 is provided with a first inclination angle and a first section height, the second volute tongue 5 is provided with a second inclination angle and a second section height, the value range of the first inclination angle is 90-160 degrees, the value range of the second inclination angle is 90-135 degrees, and the value ranges of the first section height and the second section height are both 4-15 millimeters.
The first and second cross-sectional heights of the first and second tongues 4 and 5 are formed on a cross-section of the second duct 3, which passes through the center of the second duct 3 and cuts the first and second tongues 4 and 5, respectively. Referring to fig. 3, the cross-section taken along the illustrated cross-section line is shown in fig. 4-8. Fig. 4 is a cross-sectional view of the air duct structure 1 as a whole, and fig. 7 shows a first cross-sectional height and a second cross-sectional height. Each parameter mentioned in this embodiment may refer to a section cut along a section line shown in fig. 3 when referring to the section.
Further, the cross-sectional positions of the first volute tongue 4 and the second volute tongue 5 are shown in fig. 7, and under the cross-section, the range of the first cross-sectional height of the first volute tongue 4 and the range of the second cross-sectional height of the second volute tongue 5 are both 4-15 mm, so that smooth air outlet is ensured, and meanwhile noise is reduced better. That is, in FIG. 7, the first section height is shown as E, the second section height is shown as D, and D and E have values between 4-15 millimeters.
Optionally, the first cross-sectional height and the second cross-sectional height are substantially equal. It should be understood that the first section height and the second section height are substantially equal, meaning that they are substantially equal in value, and in fig. 7, D is substantially equal to E with an error range of about 10%. That is, D and E are considered equal to each other within 10%.
Meanwhile, it should be noted that the first inclination angle and the second inclination angle are both obtuse angles, so that smooth circulation of the air flow is further ensured, and noise is further reduced to a greater extent. The cross-section positions of the first volute tongue 4 and the second volute tongue 5 are shown in fig. 3, and under the cross-section, the first inclination angle of the first volute tongue 4 and the second inclination angle of the second volute tongue 5 take values within the above-mentioned value range, so that smooth air outlet is ensured, and meanwhile noise is reduced better. Meanwhile, as shown in FIG. 8, the first inclination angle is schematically shown asThe second inclination angle is indicated as +.> The value of (2) is 90-160 DEG, which is +.>The range of the value of (2) is 90-135 degrees. Alternatively, the first inclination angle +.>And a second inclination angle->The angle values of (2) are not equal. For example, the first angle of inclination is greater than the second angle of inclination.
Optionally, the air outlet of the second air duct 3 is provided with an air outlet section 10, the air outlet section 10 and the second extending section 8 are parallel to each other, at this time, the inclination angle of the second inclined section 9 and the air outlet section 10, the inclination angle of the second inclined section 9 and the second extending section 8 are equal, and the two inclination angles are equal (the internal stagger angles of parallel straight lines are equal).
Further, the first inclination angle is larger than the second inclination angle, i.e. the first inclination section 7 and the second extension section 8 are more gentle, and the second inclination section 9 and the second extension section 8 are steeper.
Meanwhile, it should be noted that the first section height of the first volute tongue 4 and the second section height of the second volute tongue 5 are kept substantially equal under the section, so that smooth air outlet is ensured, and noise is reduced better. Further, it should be understood that the first section height and the second section height are substantially equal, meaning that they are substantially equal in value, with an error range of around 10%. In fig. 7, the first section height is indicated as E, the second section height is indicated as D, and D is substantially equal to E.
When the air duct structure 1 is applied to a fan structure, the wind wheel is installed close to the first air duct 2, and air flow is discharged from the first air duct 2 to the second air duct 3 and from an air outlet of the second air duct 3. That is, the first air duct 2 is located at the inner side and the second air duct 3 is located at the outer side. When the existing air duct is used, the position of the second air duct 3 on the outer side is easy to generate a volute phenomenon, so that exhaust air and noise are influenced. In the air duct structure 1 provided by the embodiment, the first inclination angle is valued in the range of 90-135 degrees, the second inclination angle is valued in the range of 90-160 degrees, and the section heights of the first volute tongue 4 and the second volute tongue 5 are valued between 4-15 millimeters; when the air flow passes through the first volute tongue 4 and the second volute tongue 5, no volute phenomenon is generated, and air outlet is smooth. Meanwhile, when the first section height and the second section of the first volute tongue 4 and the second volute tongue 5 are valued in the above-mentioned range, and the first inclination angle and the second inclination angle are valued in the above-mentioned range, the noise of the air flow can be reduced. When the air duct structure 1 provided by the embodiment is applied to an air conditioner, the noise of the air conditioner can be reduced, and the running low noise of the air conditioner is ensured.
In addition, it should be noted that, the first volute tongue 4 and the second volute tongue 5 are disposed on the inner wall of the second air duct 3, and the number thereof is not specifically limited; that is, the number of the first and second tongues 4, 5 may be set according to different usage scenarios. The first volute tongue 4 and the second volute tongue 5 are formed in pairs, or after a pair of the first volute tongue 4 and the second volute tongue 5 is formed, the first volute tongue 4 and the second volute tongue 5 may be respectively disposed. When the first volute tongue 4 and the second volute tongue 5 are present in a plurality of pairs, they may be arranged in a uniformly spaced manner.
Referring to fig. 5, optionally, the first volute tongue 4 includes a first extension section 6 and a first inclined section 7 disposed on the first extension section 6, the first extension section 6 extends from the air duct opening of the first air duct 2 to the second air duct 3, the first inclined section 7 is disposed on the second volute tongue 5, and the first inclined section 7 has a first cross-sectional height.
Optionally, the second volute tongue 5 includes a second extension section 8 and a second inclined section 9 disposed on the second extension section 8, the second extension section 8 is disposed on the first inclined section 7 and extends to the second inclined section 9, the second inclined section 9 is disposed on an inner wall of the second air duct 3, and the second inclined section 9 has a second cross-sectional height.
Alternatively, the first extension section 6 and the first inclined section 7 may be integrally formed with the inner wall of the second air duct 3, the second extension section 8 and the second inclined section 9 may be integrally formed with the inner wall of the second air duct 3, that is, when the first tongue 13 may be integrally formed with the volute cover 11, and the second tongue 14 may be integrally formed with the volute receptacle 12.
It should be noted that, since the cross section of the second air duct 3 may be arc-shaped or circular, the first volute tongue 4 and the second volute tongue 5 are different in distance from the central axis of the second air duct 3, for example, the first volute tongue 4 is closer to the central axis than the second volute tongue 5. Similarly, the two end parts of the first inclined section 7 are different in distance from the central axis, and the end part of the first inclined section 7, which is close to the first air duct 2, is closer to the central axis than the other end part; the second inclined section 9 has both end portions thereof spaced apart from the central axis, and the end portion of the second inclined section 9 adjacent to the second extended section 8 is closer to the central axis than the other end portion.
Optionally, the first extension section 6 is provided in an arc shape, and the arc shape is parallel to the arc-shaped inner wall surface of the second air duct 3. The two ends of the first extension section 6 are respectively connected with the first air duct 2 and the first inclined section 7, and the arc-shaped arrangement is more convenient for guiding air.
Optionally, the second extension section 8 is arranged parallel to the second air duct 3, and two ends of the second extension section 8 are respectively connected with the first inclined section 7 and the second inclined section 9.
Optionally, the length of the air outlet section 10 is smaller than or equal to the length of the second volute tongue 5, and the length of the air outlet section 10 is also smaller than or equal to the length of the first volute tongue 4.
Optionally, the length of the first volute tongue 4 is greater than or equal to the length of the second volute tongue 5.
Optionally, the length of the air outlet section 10 ranges from 4 to 10 mm, the length of the first volute tongue 4 ranges from 8 to 20 mm, and the length of the second volute tongue 5 ranges from 6 to 15 mm.
As shown in fig. 6, the length of the air outlet section 10 is denoted as a, the length of the second volute tongue 5 is denoted as B, the length of the first volute tongue 4 is denoted as C, and the relationship between the above A, B, C is a.ltoreq.b.ltoreq.c; optionally, the value range of A is 4-10 mm, the value range of B is 6-15 mm, and the value range of C is 8-20 mm.
The air duct structure 1 provided in this embodiment may be configured in a manner of connection after split molding. Optionally, the air duct structure 1 includes a scroll cover 11 and a scroll seat 12, where the scroll cover 11 and the scroll seat 12 are detachably connected, and form the first air duct 2 and the second air duct 3.
Further, a first tongue 13 is disposed on the volute cover 11, a second tongue 14 is disposed on the volute seat 12, the first tongue 13 and the second tongue 14 are abutted to form a first tongue 4, and the second tongue 5 is disposed on the volute cover 11. Alternatively, the first tongue 13 may be integrally formed with the volute casing cover 11, the second tongue 14 may be integrally formed with the volute casing base 12, and the second tongue 5 may be integrally formed with the volute casing cover 11.
It will be appreciated that the first tongue 13 and the second tongue 14 respectively represent portions of the first volute tongue 4 on the volute casing cover 11 and the volute casing base 12, and that the first volute tongue 4 is formed by the first tongue 13 and the second tongue 14. Optionally, the second volute tongue 5 is integrally disposed on the volute cover 11.
Optionally, the length of the first tongue 13 is greater than the length of the second tongue 14; further, the length of the first tongue 13 is also greater than or equal to the length of the second volute tongue 5.
The lengths of the first volute tongue 4 and the second volute tongue 5 refer to the lengths of the first volute tongue 4 and the second volute tongue 5 in a radial cross section of the second air duct 3, which cross section is perpendicular to the cross section line shown in fig. 3.
Optionally, the air duct structure 1 further includes a centrifugal wind wheel 15, the centrifugal wind wheel 15 is mounted on the first air duct 2, and the centrifugal wind wheel 15 is used for driving gas to flow.
Second embodiment
Referring to fig. 1 to 8 in combination, the present embodiment provides an air conditioner (not shown) including the air duct structure 1, which can ensure smooth air outlet and better noise reduction.
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 utility model provides an air duct structure, its characterized in that, air duct structure (1) includes spiral case lid (11) and spiral case seat (12), be provided with first tongue (13) on spiral case lid (11), be provided with second tongue (14) on spiral case seat (12), spiral case lid (11) and spiral case seat (12) are dismantled and are connected to form first wind channel (2) and second wind channel (3) that communicate each other, first tongue (13) with second tongue (14) are connected and are formed first spiral tongue (4), spiral case lid (11) are provided with second spiral tongue (5);
the first tongue body (13) and the second tongue body (14) are arranged to extend outwards from the air duct opening of the first air duct (2), and the second volute tongue (5) is arranged towards the air duct opening of the second air duct (3);
the first volute tongue (4) is provided with a first inclination angle and a first section height, the second volute tongue (5) is provided with a second inclination angle and a second section height, the value range of the first inclination angle is 90-160 degrees, the value range of the second inclination angle is 90-135 degrees, and the value ranges of the first section height and the second section height are both 4-15 millimeters;
the first section height is equal to the second section height;
the length of the first tongue body (13) is greater than that of the second tongue body (14), and the length of the first tongue body (13) is also greater than or equal to that of the second volute tongue (5).
2. The air duct structure according to claim 1, wherein the first volute tongue (4) comprises a first extension section (6) and a first inclined section (7) arranged on the first extension section (6), the first extension section (6) extends from an air duct opening of the first air duct (2) to the second air duct (3), the first inclined section (7) is arranged on the second volute tongue (5), the first inclined section (7) has the first section height, and an inclined angle of the first inclined section (7) is a first inclined angle.
3. The air duct structure according to claim 2, characterized in that the second volute tongue (5) comprises a second extension section (8) and a second inclined section (9) arranged at the second extension section (8), the second extension section (8) is arranged at the first inclined section (7) and extends to the second inclined section (9), the second inclined section (9) is arranged at the inner wall of the second air duct (3), the second inclined section (9) has the second section height, and the inclination angle of the second inclined section (9) relative to the second extension section (8) is the second inclination angle.
4. The duct structure of claim 3, wherein the first angle of inclination is greater than the second angle of inclination.
5. The air duct structure according to claim 1, characterized in that an air outlet of the second air duct (3) is provided with an air outlet section (10), a length of the air outlet section (10) along the axis of the second air duct (3) is smaller than or equal to a length of the second volute tongue (5), and a length of the air outlet section (10) along the axis of the second air duct (3) is also smaller than or equal to a length of the first volute tongue (4) along the axis of the second air duct (3).
6. The air duct structure according to claim 5, wherein the length of the first volute tongue (4) along the axis of the second air duct (3) is greater than or equal to the length of the second volute tongue (5) along the axis of the second air duct (3).
7. The air duct structure according to claim 5, wherein the length of the air outlet section (10) ranges from 4 to 10 mm, the length of the first volute tongue (4) ranges from 8 to 20 mm, and the length of the second volute tongue (5) ranges from 6 to 15 mm.
8. An air conditioner comprising a duct structure (1) as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811245961.3A CN108931043B (en) | 2018-10-24 | 2018-10-24 | Air duct structure and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811245961.3A CN108931043B (en) | 2018-10-24 | 2018-10-24 | Air duct structure and air conditioner |
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| Publication Number | Publication Date |
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| CN108931043A CN108931043A (en) | 2018-12-04 |
| CN108931043B true CN108931043B (en) | 2023-09-15 |
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| CN201811245961.3A Active CN108931043B (en) | 2018-10-24 | 2018-10-24 | Air duct structure and air conditioner |
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| CN108443226A (en) * | 2018-05-17 | 2018-08-24 | 珠海格力电器股份有限公司 | A kind of ladder volute structure and centrifugal blower and blower device |
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| CN101672299B (en) * | 2008-09-12 | 2012-09-19 | 富准精密工业(深圳)有限公司 | Eccentric fan |
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| JPH0821399A (en) * | 1994-07-11 | 1996-01-23 | Hitachi Ltd | Air conditioning centrifugal blower |
| FR2875560A1 (en) * | 2004-09-23 | 2006-03-24 | Renault Sas | Centrifugal fan for e.g. ventilating equipment, has diffuser with constant section, and volute tongue inclined with respect to wheel axle at preset inclination angle of low value and situated in plane parallel to axle |
| CN101649845A (en) * | 2008-08-13 | 2010-02-17 | 富准精密工业(深圳)有限公司 | Centrifugal fan |
| CN105257598A (en) * | 2015-11-16 | 2016-01-20 | 上海林内有限公司 | Volute casing of fan with oblique ladder volute tongue |
| CN108443226A (en) * | 2018-05-17 | 2018-08-24 | 珠海格力电器股份有限公司 | A kind of ladder volute structure and centrifugal blower and blower device |
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| CN108931043A (en) | 2018-12-04 |
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