CN210623117U - Cross flow fan and air conditioner - Google Patents
Cross flow fan and air conditioner Download PDFInfo
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- CN210623117U CN210623117U CN201921341254.4U CN201921341254U CN210623117U CN 210623117 U CN210623117 U CN 210623117U CN 201921341254 U CN201921341254 U CN 201921341254U CN 210623117 U CN210623117 U CN 210623117U
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Abstract
The utility model discloses a cross-flow fan and air conditioner has solved among the prior art cross-flow fan noise of revolution and the serious problem of surge, and its technical scheme main points are: the impeller comprises a plurality of impeller sections, wherein each impeller section comprises a plurality of blades which are arranged at intervals along the circumferential direction and a supporting plate which is connected with the blades and is used for supporting the blades, and a preset included angle is formed between the axial direction of each impeller section and each blade; the impeller sections are sequentially connected in the axial direction to form a cross-flow fan main body with a preset length, and comprise at least one impeller section with different preset included angles with other impeller sections; the utility model discloses a set up at least one kind and had the impeller festival with other impeller festival different preset contained angles, avoided the rotary noise and the surge that the cross flow fan leads to because of the blade angle is single to superpose and enlarge the problem to the rotary noise and the surge of cross flow fan have been improved.
Description
Technical Field
The utility model relates to a fan equipment technical field, more specifically say, it relates to a cross-flow fan and air conditioner.
Background
In research and development, the volute tongue geometric structure of the volute is adjusted to be inclined with the impeller, and the included angles between the central line of the volute tongue and the horizontal plane and the vertical plane of the volute are adjusted at the same time, so that the clearance between the impeller blade and the volute tongue is gradually changed, the impeller blade and airflow noise generated by the volute tongue are staggered in different phases when the impeller rotates, and the overlapping amplification of the airflow noise with the same frequency due to the unchanged clearance between the impeller blade and the volute tongue is avoided.
Although the airflow noise can be theoretically improved by the above solution, it is difficult to design a general optimal structure of the volute tongue, and thus the problem cannot be solved essentially.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a cross flow fan and air conditioner reaches the purpose of noise reduction.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a cross-flow fan comprises a plurality of impeller sections, wherein each impeller section comprises a plurality of blades arranged at intervals along the circumferential direction and a supporting disc connected with the blades and used for supporting the blades, and a preset included angle is formed between the axial direction of each impeller section and each blade; the impeller sections are sequentially connected in the axial direction to form a cross-flow fan main body with a preset length, and the impeller sections comprise at least one impeller section with different preset included angles with other impeller sections.
The cross-flow fan, wherein the impeller sections include a pitched blade impeller section and a straight blade impeller section.
The cross-flow fan is characterized in that a preset included angle of blades of the oblique blade type impeller section is 5-12 degrees; the preset included angle of the blades of the straight blade type impeller section is 0 degree.
The cross flow fan is characterized in that the inclined blade type impeller sections and the straight blade type impeller sections are combined to form a cross flow fan main body with a preset length.
The cross-flow fan is characterized in that the impeller sections comprise a plurality of inclined blade type impeller sections, the preset included angle of blades of the inclined blade type impeller sections is 5-12 degrees, and the inclined blade type impeller sections are combined to form a cross-flow fan main body with a preset length.
The crossflow fan wherein at least one of the impeller sections is of a different length to the other impeller sections.
The cross-flow fan is characterized in that the lengths of the impeller sections are independently selected from one of the ranges of 35-95 mm.
An air conditioner comprises the cross-flow fan, and further comprises a shell and a driving motor arranged in the shell and used for driving a main body of the cross-flow fan, wherein an air inlet and an air outlet communicated with the cross-flow fan are formed in the shell.
The air conditioner, wherein, the axial center of impeller festival is provided with the pivot that is used for connecting driving motor.
The air conditioner is characterized in that a connecting seat for placing the cross-flow fan is arranged in the shell, and a motor seat for fixing the driving motor is arranged on one side of the connecting seat.
To sum up, the utility model discloses following beneficial effect has:
the utility model discloses a set up the impeller festival of the contained angle is predetermine to multiple difference, avoided the rotary noise and the surge that the through-flow fan leads to because of the blade angle is single to superpose and enlarge the problem to the rotary noise and the surge of through-flow fan have been improved.
Drawings
Fig. 1 is a schematic structural view of a single pitched blade impeller section in this embodiment.
FIG. 2 is a schematic structural view of a single straight blade impeller section in this embodiment.
FIG. 3 is a schematic structural diagram of a cross flow fan main body composed of impeller segments with various preset included angles in this embodiment.
FIG. 4 is a schematic structural diagram of a main body of a cross flow fan composed of impeller segments of various lengths in the present embodiment.
Fig. 5 is a sectional view of the wheel segment in this embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Example (b): a crossflow fan as shown in figures 1 to 5.
The cross-flow fan comprises a plurality of impeller sections, each impeller section comprises a plurality of blades 12 and a supporting plate 13, the blades 12 are arranged at intervals in the circumferential direction, the supporting plates 13 are connected to the blades 12, the supporting plates 13 are used for supporting the blades 12, and preset included angles are formed between the axial direction of the impeller sections and the blades 12. One side edge of the blade is connected with the connection point of the outermost edge of the connection part of the supporting disks above and below to form the inclined line of the blade. The preset included angle is a space included angle formed by the inclined line and the axial direction of the impeller section. The side edges can be selected from the outer side edge of the outermost edge of the blade and the inner side edge of the innermost edge of the blade. Preferably, the side edges are selected from the outer side edges of the blades.
Referring to fig. 1, a connection point of an outer side edge of one of the blades and an outermost edge of an upper support plate is a1, a connection point of the outer side edge of the other blade and an outermost edge of a lower support plate is a2, the a1 and the a2 form an inclined line L1 of the blade, and a spatial included angle formed by the inclined line L1 and an axial direction L2 of the impeller section is the preset included angle α.
The impeller sections are sequentially connected in the axial direction to form a cross flow fan main body 100 with a preset length, and the impeller sections comprise at least one impeller section with a preset included angle different from that of other impeller sections.
In the present embodiment, the method comprises combining the single-section inclined vane impeller section 11 and the single-section straight vane impeller section 5 with each other through different preset included angles, or combining the single-section inclined vane impeller section 11 and the single-section straight vane impeller section 5 with each other through different lengths.
Through the technical scheme of the application, the problems of rotation noise, surging and the like caused by the fact that a conventional through-flow fan is an inclined blade type or straight blade type impeller section with a single preset included angle are solved, and the problem that the design of an air conditioner is limited due to a single-section impeller section with a single length is solved. The cross-flow fan combined by the single-section inclined blade type and the straight blade type with different preset included angles basically solves the problems of rotating noise, surging and the like, and avoids the structural design of an air conditioner and the limitation of the type selection of the cross-flow fan by mutually assembling the single-section cross-flow fans with different lengths into the cross-flow fan with the required length.
Wherein the impeller sections comprise a pitched blade impeller section 11 and a straight blade impeller section 5. The preset included angle of the blades of the oblique blade type impeller section is 5-12 degrees, namely, the preset included angle of the blades of the oblique blade type impeller section is 5-12 degrees; the preset included angle of the blades of the straight blade type impeller section is 0 degree. For example, the preset included angle of the blade 12 of the oblique-blade type hub 11 includes one or more of 5 degrees, 8 degrees, 10 degrees and 12 degrees; the preset included angle of the blades 12 of the straight-blade impeller section 5 is 0 degree, that is, the blades 12 of the straight-blade impeller section 5 are arranged along the axial direction of the straight-blade impeller section 5. The inclined blade type impeller section 11 with various preset included angles of the blades 12 and the straight blade type impeller section 5 are combined to form a cross flow fan main body 100 with a preset length.
The inclined blade type impeller section and the straight blade type impeller section with different blade preset included angles are mixed and assembled through adjusting the preset included angle of each impeller section blade in the main body of the cross flow fan, the problem that each section of the cross flow fan is the inclined blade type or straight blade type impeller section with the same preset included angle is solved essentially, the impeller is in the rotating process, the volute tongue and the volute casing are periodically flapped due to airflow, the periodic same rotating noise, surging, airflow noise and the like are overlapped and amplified, and the comfort of a user in the using process is influenced.
Specifically, in the scheme, the main body of the cross-flow fan mainly comprises single-section inclined blade profiles and single-section straight blade profiles which are different in inclination degree, wherein the single-section inclined blade profiles are not limited to a preset included angle, the preset included angle is α, as shown in fig. 3, various preset included angles such as a single-section inclined 5-degree blade profile 1, a single-section inclined 8-degree blade profile 2, a single-section inclined 10-degree blade profile 3, a single-section inclined 12-degree blade profile 4 and a straight blade profile impeller profile 5 can be combined with one another, meanwhile, the combination modes can be matched at will, and the main purpose of the cross-flow fan is to avoid superposition and amplification of rotating noise, surging and whistling generated by the same inclined angle or the same straight blade profile in the same frequency section, and influence on the comfort experience of an air conditioner.
The impeller section is 35-95 mm in length, for example, the impeller section is one or more of 35mm, 55mm, 65mm, 75mm and 95mm in length. The oblique blade type impeller sections 11 and the straight blade type impeller sections 5 having various lengths are combined to form a cross flow fan body 100 of a predetermined length.
Wherein, the length of at least one impeller section of the cross-flow fan is different from that of other impeller sections.
Specifically, in the present scheme, the main body of the cross flow fan mainly includes the mutual combination of single-section oblique blade profiles with different lengths, or the mutual combination of single-section straight blade profiles with different lengths to form the required length, for example, in fig. 4, the lengths of the single-section blades are different, 6 is the length of 95mm, 7 is the length of 65mm, 8 is the length of 75mm, 9 is the length of 55mm, and 10 is the length of 35mm, so that the length selection range of the cross flow fan is not limited by the length of the single-section straight blade profile or the oblique blade profile, and is not reduced.
Therefore, the impeller sections with different preset included angles are arranged, the problem of superposition and amplification of the rotating noise and the surge caused by single blade angle of the cross flow fan is solved, and the rotating noise and the surge of the cross flow fan are improved.
The utility model also provides an air conditioner, including above-mentioned arbitrary tubular fan, wherein, still include the shell and set up just be used for the drive in the shell the driving motor of tubular fan main part, be provided with the intercommunication on the shell tubular fan's air intake and air outlet.
Wherein, the axial center of the impeller section is provided with a rotating shaft used for connecting the driving motor.
The casing is internally provided with a connecting seat for placing the cross-flow fan, and one side of the connecting seat is provided with a motor seat for fixing the driving motor.
The length of each impeller section in the cross-flow fan main body is adjusted, the types of selectable lengths are increased, and the single impeller sections with different lengths are mutually assembled into the cross-flow fan main body with the required length, so that the problem that the structural design of an air conditioner and the type selection of the cross-flow fan are influenced due to the limitation of the length of the single section of the cross-flow fan is solved.
It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. A cross flow fan is characterized in that: the impeller comprises a plurality of impeller sections, wherein each impeller section comprises a plurality of blades which are arranged at intervals along the circumferential direction and a supporting plate which is connected with the blades and is used for supporting the blades, and a preset included angle is formed between the axial direction of each impeller section and each blade; the impeller sections are sequentially connected in the axial direction to form a cross-flow fan main body with a preset length, and the impeller sections comprise at least one impeller section with different preset included angles with other impeller sections.
2. The crossflow fan of claim 1, wherein: the impeller sections comprise inclined blade type impeller sections and straight blade type impeller sections.
3. The crossflow fan of claim 2, wherein: the preset included angle of the blades of the oblique blade type impeller section is 5-12 degrees; the preset included angle of the blades of the straight blade type impeller section is 0 degree.
4. The crossflow fan of claim 3, wherein: the inclined blade type impeller section and the straight blade type impeller section are combined to form a cross flow fan main body with a preset length.
5. The crossflow fan of claim 1, wherein: the impeller sections comprise a plurality of inclined blade type impeller sections, the preset included angle of blades of the inclined blade type impeller sections is 5-12 degrees, and the inclined blade type impeller sections are combined to form a cross flow fan main body with a preset length.
6. The crossflow fan as claimed in any one of claims 1 to 5, wherein: at least one of the impeller sections has a different length than the other impeller sections.
7. The crossflow fan of claim 6, wherein: the lengths of the impeller sections are independently selected from one of the ranges of 35-95 mm.
8. An air conditioner comprising the cross flow fan as set forth in any one of claims 1 to 7, wherein: the cross-flow fan is characterized by further comprising a shell and a driving motor arranged in the shell and used for driving the cross-flow fan main body, wherein an air inlet and an air outlet which are communicated with the cross-flow fan are formed in the shell.
9. The air conditioner as claimed in claim 8, wherein: and a rotating shaft used for connecting the driving motor is arranged at the axial center of the impeller section.
10. The air conditioner as claimed in claim 9, wherein: the casing is internally provided with a connecting seat for placing the cross-flow fan, and one side of the connecting seat is provided with a motor seat for fixing the driving motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921341254.4U CN210623117U (en) | 2019-08-16 | 2019-08-16 | Cross flow fan and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921341254.4U CN210623117U (en) | 2019-08-16 | 2019-08-16 | Cross flow fan and air conditioner |
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| Publication Number | Publication Date |
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| CN210623117U true CN210623117U (en) | 2020-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921341254.4U Active CN210623117U (en) | 2019-08-16 | 2019-08-16 | Cross flow fan and air conditioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022089298A1 (en) * | 2020-10-28 | 2022-05-05 | 青岛海尔空调器有限总公司 | Tangential fan assembly, air conditioner and method for adjusting air volume of air conditioner |
| WO2024021329A1 (en) * | 2022-07-26 | 2024-02-01 | 广东美的制冷设备有限公司 | Cross-flow air supply assembly and air conditioner having same |
-
2019
- 2019-08-16 CN CN201921341254.4U patent/CN210623117U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022089298A1 (en) * | 2020-10-28 | 2022-05-05 | 青岛海尔空调器有限总公司 | Tangential fan assembly, air conditioner and method for adjusting air volume of air conditioner |
| WO2024021329A1 (en) * | 2022-07-26 | 2024-02-01 | 广东美的制冷设备有限公司 | Cross-flow air supply assembly and air conditioner having same |
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