CN217735835U - Lubricating oil cooling fan - Google Patents
Lubricating oil cooling fan Download PDFInfo
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- CN217735835U CN217735835U CN202221954991.3U CN202221954991U CN217735835U CN 217735835 U CN217735835 U CN 217735835U CN 202221954991 U CN202221954991 U CN 202221954991U CN 217735835 U CN217735835 U CN 217735835U
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- front guide
- guide vane
- cylinder body
- impeller
- cooling fan
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Abstract
The utility model discloses a lubricating oil cooling fan, including mounting screw, preceding stator barrel, impeller and mounting nut. The front guide vane cylinder body is a shell of a rotary structure, the first end of the rotary axis of the front guide vane cylinder body is an air inlet end, the second end of the rotary axis of the front guide vane cylinder body is an air outlet end, a front guide vane is arranged in the front guide vane cylinder body close to one side of the air inlet end, one end of the front guide vane is connected with the inner wall of the front guide vane cylinder body, the other end of the front guide vane is connected with a front guide vane hub, and a flange connecting structure is arranged on the end face of the front guide vane hub; the impeller is coaxial with the front guide vane cylinder body, is positioned in the front guide vane cylinder body and is close to one side of the exhaust end, and is connected with an output shaft of the main speed reducer through a mounting nut; the first end of the mounting screw rod is connected to the end face flange connecting structure of the front guide impeller hub, and the second end of the mounting screw rod is connected with the mounting end face of the main speed reducer. The utility model discloses a lubricating oil cooling fan compact structure, light in weight, amount of wind pressure are big, two shelves rotational speed adaptability are good.
Description
Technical Field
The utility model belongs to the technical field of helicopter lubricating oil system, concretely relates to two grades of rotation speeds preceding guide vane structure lubricating oil cooling fan.
Background
The lubricating oil cooling fan is an important component of a high-performance helicopter lubricating oil cooling system and mainly used for extracting outside air and providing air with sufficient flow and pressure rise for a next-stage lubricating oil radiator so as to cool high-temperature lubricating oil.
With the rapid development of the cooling technology of the lubricating oil system, the design of the lubricating oil cooling fan is required to be more highly influenced by factors such as heating value of the lubricating oil, system volume and weight, and the lubricating oil cooling fan is required to be compact in structure, high in performance and light in weight.
The lubricating oil cooling fan generally adopts an axial flow type structure, and the axial flow fan can provide larger air volume and meet the cooling requirement of the lubricating oil. The single-impeller axial flow fan is difficult to generate larger wind pressure, and the rear guide vane type axial flow fan can generate larger wind pressure but has higher requirement on installation space.
Disclosure of Invention
The utility model aims at providing a stator structure lubricating oil cooling fan before two grades of rotational speeds to solve lubricating oil cooling fan compact structure, light in weight, the big, the good user demand problem of two grades of rotational speed adaptability of amount of wind pressure.
The utility model discloses a basic thinking is: the meridian acceleration type fan can accelerate airflow in a convergent hub channel, and can generate large wind pressure on the premise of ensuring large wind volume. For the noise generated by meridian acceleration, the blade rotation noise can be reduced through the non-uniform arrangement of the blades, so that the noise quality of the product is improved, and lower noise is obtained.
The utility model discloses a realize through following technical scheme:
a cooling fan for helicopter oil cooling system comprises a fan body,
the front guide vane cylinder body is a shell of a rotary structure, the first end of the rotary axis of the front guide vane cylinder body is an air inlet end, the second end of the rotary axis of the front guide vane cylinder body is an air outlet end, a front guide vane is arranged in the front guide vane cylinder body close to one side of the air inlet end, one end of the front guide vane is connected with the inner wall of the front guide vane cylinder body, the other end of the front guide vane is connected with a front guide vane hub, and a flange connecting structure is arranged on the end face of the front guide vane hub;
the impeller is coaxial with the front guide vane cylinder body, is positioned in the front guide vane cylinder body and is close to one side of the exhaust end, and is connected with the output shaft of the main speed reducer through a mounting nut;
and a first end of the mounting screw is connected to the end face flange connecting structure of the front guide impeller hub, and a second end of the mounting screw is connected with the mounting end face of the main reducer.
Furthermore, the front guide vane, the front guide impeller hub and the shell in the front guide vane cylinder are of an integrally formed structure.
Further, a distance adjusting gasket is arranged between the impeller and the mounting nut.
Further, the profile line of the front guide vane in the front guide vane cylinder body is an NACA65 profile, and the blade root part of the front guide vane to the blade top part are composed of 3 sections.
Further, the installation angles on 3 sections of the blade profile of the front guide vane are respectively 6 degrees, 4 degrees and 2 degrees in sequence.
Further, the profile line of the blade on the impeller is an NACA65 profile, and the blade consists of 3 sections from the root part to the top part of the blade.
Further, the installation angles of the 3 sections of the blade profile on the impeller are respectively 52.1 degrees, 43.5 degrees and 34.9 degrees in sequence.
Further, the number of blades on the impeller is greater than the number of front vanes.
Preceding blade form axial fan can be with preceding blade design in barrel structure, and convenient reliable installation can be realized to barrel and main platform of subtracting. The lubricating oil cooling fan in the form of the front guide vane at two speeds can generate different air volume and air pressure under two speeds of forward flying and hovering of the helicopter, extract different power to a main reducer, reasonably utilize the output power of the main reducer, dissipate heat of lubricating oil systems at different speeds and meet the heat dissipation requirement of the lubricating oil systems.
Compared with the prior art, the utility model discloses there is following characteristics:
1. the lubricating oil cooling fan has compact structure, light weight and reliable installation;
2. different air volume, air pressure and extraction power indexes can be realized under two gears of different rotating speeds.
Drawings
FIG. 1 is a schematic view of a two-speed front guide vane configuration oil cooling fan;
FIG. 2 is a schematic view of a leading bucket barrel;
FIG. 3 is a schematic view of an impeller;
FIG. 4 is a schematic view of a mounting screw;
FIG. 5 is a schematic view of a mounting nut;
in the figure, 1-mounting the screw; 2-front guide vane cylinder; 3-an impeller; 4-mounting the nut.
Detailed Description
The following description of the present invention will be made with reference to the accompanying drawings and specific embodiments, but it should not be understood that the scope of the present invention is limited to the following embodiments, and various modifications, substitutions and changes made according to the ordinary technical knowledge and conventional means in the art without departing from the technical spirit of the present invention are included in the scope of the present invention.
In this embodiment, a set of lubricating oil cooling fan for cooling lubricating oil in a helicopter lubricating oil system needs to be designed, and the technical indexes of the fan are as follows:
working condition 1:
the rotating speed is more than 9000r/min.
Working condition 2:
the rotating speed is more than 10000r/min.
In order to meet the above index requirements, an oil cooling fan structure as shown in fig. 1 is employed.
A two-gear rotating speed front guide vane type lubricating oil cooling fan structurally comprises a mounting screw rod 1, a front guide vane cylinder 2, an impeller 3 and a mounting nut 4. The front guide vane cylinder 2 is a shell of a rotary structure, the first end of the rotary axis of the front guide vane cylinder 2 is an air inlet end, the second end of the rotary axis of the front guide vane cylinder 2 is an air outlet end, a front guide vane is arranged in the front guide vane cylinder 2 close to one side of the air inlet end, one end of the front guide vane is connected with the inner wall of the front guide vane cylinder 2, the other end of the front guide vane is connected with a front guide vane hub, and the end surface of the front guide vane hub is provided with a flange connection structure; the impeller 3 is coaxial with the front guide vane cylinder 2, the impeller 3 is positioned in the front guide vane cylinder 2 and close to one side of the exhaust end, and the impeller 3 is connected with an output shaft of the main speed reducer through a mounting nut 4; the first end of the mounting screw rod 1 is connected to the end face flange connecting structure of the front guide impeller hub, and the second end of the mounting screw rod is connected with the mounting end face of the main reducer.
As shown in fig. 1, the overall structure of the oil cooling fan is axial flow, and the air flows axially into and out of the fan, and the direction of the arrow in fig. 1 represents the air flow inlet direction. The air inlet direction end is provided with a front guide vane, the impeller 3 serving as a movable vane adopts a pure axial flow type structure, the front guide vane adopts a pure axial flow type structure, and the front guide vane and the installation cylinder are integrally designed and manufactured to form a front guide vane cylinder 2, so that the structure is compact. The front guide vane cylinder body 2 is installed on the installation end face of the main speed reducer through 4 installation screw rods 1, the impeller 3 is installed on the output shaft of the main speed reducer through 1 installation nut 4, the installation form is simple and reliable, and the space requirement is small. During installation, the distance-adjusting gasket can be arranged at the joint of the impeller 3 and the mounting nut 4 as required, so that the axial distance between the front guide vane cylinder 2 and the impeller 3 is ensured to be 2-3 mm.
As shown in fig. 2, the front guide vane cylinder 2 has 13 front guide vane blades, the profile of the blade profile is an NACA65 profile, the front guide vane cylinder is made of 3 sections from the blade root to the blade tip, the installation angles on the 3 sections of the blade profile are respectively 6 °, 4 ° and 2 ° in sequence, the front guide vane cylinder 2 is made of high-strength aluminum alloy 6061, the arrow in fig. 2 represents the airflow flowing direction, and the 3 sections on the left side in fig. 2 sequentially correspond to 3 different sections from the blade root to the tip from top to bottom.
As shown in fig. 3, the impeller 3 has 15 blades, the blade profile line of the blade is an NACA65 airfoil, the blade is composed of 3 sections from the blade root to the blade tip, the installation angles on the 3 blade profile sections are respectively 52.1 °, 43.5 ° and 34.9 ° in sequence, the impeller 3 is made of a high-strength forged aluminum alloy LD5 material, the arrow in fig. 3 represents the airflow flowing direction, and the 3 sections on the left side in fig. 3 correspond to 3 different sections from the blade root to the blade tip in sequence from top to bottom.
As shown in FIG. 4, the mounting screw 1 is made of structural steel 1Cr17Ni2, and has high structural strength and high reliability.
As shown in fig. 5, the mounting nut 4 is made of a high-temperature alloy GH2132 material, so that the structural strength of parts is high, and the corrosion resistance is good.
Under the above structure, the weight of the lubricating oil cooling fan is less than 8kg, the structure is compact, the installation is reliable, and different requirements of air volume, air pressure and extraction power index can be realized under two-gear rotating speed.
The above-mentioned embodiment is not used for limiting the protection scope of the utility model discloses a all be in the utility model discloses a deformation, modification or equivalence replacement etc. that make on the technical scheme basis all should fall into the protection scope of the utility model.
Claims (8)
1. A lubricant cooling fan for a helicopter lubricant cooling system, characterized by: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the front guide vane cylinder body (2) is a shell of a rotary structure, the first end of the rotary axis of the front guide vane cylinder body (2) is an air inlet end, the second end of the rotary axis of the front guide vane cylinder body is an air outlet end, a front guide vane is arranged in the front guide vane cylinder body (2) close to one side of the air inlet end, one end of the front guide vane is connected with the inner wall of the front guide vane cylinder body (2), the other end of the front guide vane is connected with a front guide vane hub, and a flange connecting structure is arranged on the end face of the front guide vane hub;
the impeller (3) is coaxial with the front guide vane cylinder body (2), the impeller (3) is positioned in the front guide vane cylinder body (2) and close to one side of the exhaust end, and the impeller (3) is connected with an output shaft of the main speed reducer through a mounting nut (4);
and the first end of the mounting screw rod (1) is connected to the end face flange connecting structure of the front guide impeller hub, and the second end of the mounting screw rod (1) is connected with the mounting end face of the main speed reducer.
2. The oil cooling fan according to claim 1, wherein: the front guide vane, the front guide impeller hub and the shell in the front guide vane cylinder body (2) are of an integrally formed structure.
3. A lubricating oil cooling fan in accordance with claim 1, wherein: and a distance adjusting gasket is arranged between the impeller (3) and the mounting nut (4).
4. The oil cooling fan according to claim 1, wherein: the profile type line of the front guide vane in the front guide vane cylinder (2) is an NACA65 profile, and the profile type line consists of 3 sections from the root part to the top part of the front guide vane.
5. The oil cooling fan according to claim 4, wherein: the installation angles on 3 sections of the blade profile of the front guide vane are respectively 6 degrees, 4 degrees and 2 degrees in sequence.
6. The oil cooling fan according to claim 1, wherein: the profile line of the blade on the impeller (3) is an NACA65 profile, and the blade consists of 3 sections from the root part to the top part of the blade.
7. The oil cooling fan according to claim 6, wherein: the installation angles of the 3 sections of the blade profile on the impeller (3) are respectively 52.1 degrees, 43.5 degrees and 34.9 degrees in sequence.
8. A lubricating oil cooling fan in accordance with claim 1, wherein: the number of blades on the impeller (3) is greater than the number of front guide vanes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221954991.3U CN217735835U (en) | 2022-07-27 | 2022-07-27 | Lubricating oil cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221954991.3U CN217735835U (en) | 2022-07-27 | 2022-07-27 | Lubricating oil cooling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217735835U true CN217735835U (en) | 2022-11-04 |
Family
ID=83850193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221954991.3U Active CN217735835U (en) | 2022-07-27 | 2022-07-27 | Lubricating oil cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217735835U (en) |
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2022
- 2022-07-27 CN CN202221954991.3U patent/CN217735835U/en active Active
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