CN2383030Y - Low noise forced oil circulation air cooler - Google Patents
Low noise forced oil circulation air cooler Download PDFInfo
- Publication number
- CN2383030Y CN2383030Y CN 99224553 CN99224553U CN2383030Y CN 2383030 Y CN2383030 Y CN 2383030Y CN 99224553 CN99224553 CN 99224553 CN 99224553 U CN99224553 U CN 99224553U CN 2383030 Y CN2383030 Y CN 2383030Y
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- blade
- root
- cooler
- blades
- air cooler
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Abstract
The utility model relates to a low noise air cooler used in the field of electric transmission and transformation, which aims to solve the defects that existing air coolers matched with the oil cooling of large-capacity transformers has loud noise and is not suitable for the reform of urban electric networks. Blades of an air fan of the cooler are designed into the shape of a forward swept air foil, and the blades with the same thickness are changed into blades with different thicknesses. The attack angles of the blades are enlarged, and the curvature of each part of the surfaces of the blades is changed. The centrifugal force of the air fan is loaded into a main stream, the laminar conditions are guaranteed, and the rotating speed of the air fan is decreased correspondingly, so that the noise of the whole body of the air cooler is lowered. The utility model can be used in the reform of urban networks in the field of electric transmission and transformation to be matched with the oil cooling of large-capacity transformers.
Description
It is the supporting low noise forced oil-circulation forced air cooler of high-power transformer oil cooling that the utility model belongs in the power transmission and transformation field.
Cooler is indispensable a corollary apparatus, particularly forced air cooler of high-power transformer oil cooling, has that its cooling capacity is big, efficient is high and characteristics such as loss is low, and is widely used.Along with the gradually enhancing of people to environmental consciousness, quiet, comfortable work and living environment are badly in need of the low noise cooling device of development.Power department is to the transformation of urban distribution network, and also the noise to forced air cooler has proposed new requirement.The blade of the forced air cooler fan of domestic production at present is a uniform thickness, and the inclination angle of blade is fixed, and its noise figure generally more than 65db (A), does not satisfy the needs in market.Be badly in need of the forced air cooler of exploitation noise figure below 65db (A).
The purpose of this utility model is at the existing higher deficiency of forced air cooler noise figure, to develop the low noise forced oil-circulation forced air cooler that a kind of suitable urban network reconstruction is used.
Forced air cooler of the present utility model is made up of steel aluminium rolled fin pipe, last lower oil chamber, body, ventilating duct, cooler fan and oil pump etc.It is characterized in that: said cooler fan is that 4-6 buzzard-type wing type blade arranged; The root and the thick middle of blade middle part radial section (along the section of blade radius direction), thin edge from root and the about 20-25mm of thick middle, carries out the transition to the 6-10mm of outer rim gradually; Blade horizontal section (perpendicular to the section of blade radius direction) is from the 5-4mm of upper limb, and middle 15mm carries out the transition to the 107mm of lower edge gradually; The angle of blade and blade Plane of rotation is from 60 ° of 30 ° of carrying out the transition to the blade outer rim gradually of root of blade; The blade front surface is irregular concave curved surface, and the radius of curvature of root is smaller, and between 100mm-120mm, the radius of curvature in the middle of the blade is bigger, and between 220mm-260mm, the radius of curvature of blade peripheral edge portion is between 140mm-170mm.
The utility model has the advantages that, adopt buzzard-type wing type blade, centrifugal force is written into main flow, improved the efficient and the performance of fan, reduced noise.Part is the Laminar Flow aerofoil profile between blade, leaf, and root adopts supercritical airfoil, and the corresponding rotating speed that reduces fan.The noise of part generation between leaf and the interference noise of air-flow have been controlled effectively.Have good big angle of attack low-speed performance and the laminar flow possession state under the Low Angle Of Attack.Have the lift-drag ratio scope of broad, thereby reduced the overall noise of forced air cooler.Noise figure has satisfied the demand of low noise forced air cooler about 60db (A).
Accompanying drawing 1 is a structural representation of the present utility model, and (1) is last oil sump and connects oil pipe among the figure; (2) be finned tube; (3) be fan; (4) be ventilating duct; (5) be the cooler body; (6) be following oil sump; (7) be oil pump; Arrow is an air-flow direction.Accompanying drawing 2 is the structure chart of forced air cooler fan, and (8) are blade among the figure; (9) be wheel hub; (10) be motor.Accompanying drawing 3 is the A-A cutaway view of accompanying drawing 2.Accompanying drawing 4 is that the B of accompanying drawing 3 is to view.Accompanying drawing 5 is the C-C section of accompanying drawing 4.Accompanying drawing 6 is the D-D section of accompanying drawing 4.
An existing accompanying drawings embodiment of the present utility model.The cooling power of forced air cooler shown in the drawings is 200kW, and two fans are arranged.Fan diameter is 900mm, hub diameter 360mm, the forced air cooler of 6 blades, the finned tube of cooler are arranged is the rolling multiple tube of steel aluminium.Blade is a buzzard-type wing type blade, and thickness carries out the transition to the middle 10mm (Fig. 6) of outer rim gradually from the middle 22mm of root; From the 4mm of upper limb, middle 15mm carries out the transition to the 6mm (Fig. 5) of lower edge; Last edge thickness carries out the transition to the 4mm of outer rim gradually from the 5mm of root of blade; Following edge thickness carries out the transition to the 7mm of outer rim gradually from the 10mm of root of blade; The angle α of blade and blade Plane of rotation is from 60 ° of 30 ° of carrying out the transition to outer rim gradually of root; Front surface mm (the blade upper limb is apart from the tangent line of root of blade 1/4 place and wheel hub) line and nn (blade upper limb apart from root of blade 2/3 place and lower edge apart from root of blade 1/3 place's line) curvature of a curve is zero; The blade surface radius of curvature on the mm line left side is 110mm; Blade surface radius of curvature between mm and the nn line is between the 240mm-250mm; Nn line right side blade surface radius of curvature is between the 150mm-160mm.
Claims (1)
1. a low noise forced oil-circulation forced air cooler is made up of steel aluminium rolled fin pipe, last lower oil chamber, cooler body, ventilating duct, cooler fan and oil pump, and it is characterized in that: said cooler fan (3) has 4-6 buzzard-type wing type blade (8); The root of blade middle part radial section (the D-D section of accompanying drawing 4) and thick middle, thin edge from root and the about 20-25mm of thick middle, carry out the transition to the 6-10mm of outer rim gradually; Blade horizontal section (the C-C section of accompanying drawing 4) is from the 5-4mm of upper limb, and middle 15mm carries out the transition to the 10-7mm of lower edge gradually; The angle α of blade and blade Plane of rotation is from 60 ° of 30 ° of carrying out the transition to the blade outer rim gradually of root of blade; The blade front surface is irregular concave curved surface, and the radius of curvature of root is smaller, and between 100mm-120mm, the radius of curvature in the middle of the blade is bigger, and between 220mm-260mm, the radius of curvature of blade peripheral edge portion is between 140mm-170mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99224553 CN2383030Y (en) | 1999-07-22 | 1999-07-22 | Low noise forced oil circulation air cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99224553 CN2383030Y (en) | 1999-07-22 | 1999-07-22 | Low noise forced oil circulation air cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2383030Y true CN2383030Y (en) | 2000-06-14 |
Family
ID=34014579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99224553 Expired - Fee Related CN2383030Y (en) | 1999-07-22 | 1999-07-22 | Low noise forced oil circulation air cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2383030Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343618A (en) * | 2011-10-21 | 2012-02-08 | 佛山神威热交换器有限公司 | Cooling system of ceramic pressing machine |
| CN102778142A (en) * | 2012-07-20 | 2012-11-14 | 无锡博利达换热器有限公司 | Oil cooler |
| CN105810401A (en) * | 2016-04-27 | 2016-07-27 | 沈阳天通电气有限公司 | High-capacity forced-oil circulation air cooler |
| CN106338210A (en) * | 2016-11-22 | 2017-01-18 | 珠海格力电器股份有限公司 | The heat sink and control method thereof |
-
1999
- 1999-07-22 CN CN 99224553 patent/CN2383030Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343618A (en) * | 2011-10-21 | 2012-02-08 | 佛山神威热交换器有限公司 | Cooling system of ceramic pressing machine |
| CN102778142A (en) * | 2012-07-20 | 2012-11-14 | 无锡博利达换热器有限公司 | Oil cooler |
| CN105810401A (en) * | 2016-04-27 | 2016-07-27 | 沈阳天通电气有限公司 | High-capacity forced-oil circulation air cooler |
| CN106338210A (en) * | 2016-11-22 | 2017-01-18 | 珠海格力电器股份有限公司 | The heat sink and control method thereof |
| CN106338210B (en) * | 2016-11-22 | 2018-06-08 | 珠海格力电器股份有限公司 | Radiator and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |