CN112160917A - Air cooler inner loop air ducting - Google Patents

Air cooler inner loop air ducting Download PDF

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Publication number
CN112160917A
CN112160917A CN202011045573.8A CN202011045573A CN112160917A CN 112160917 A CN112160917 A CN 112160917A CN 202011045573 A CN202011045573 A CN 202011045573A CN 112160917 A CN112160917 A CN 112160917A
Authority
CN
China
Prior art keywords
air
cooler
plate
long
baffle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011045573.8A
Other languages
Chinese (zh)
Inventor
张田
刘星彪
高颜
姚勇军
魏树国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yangzhong Shenyang Heat Exchange Equipment Co ltd
Original Assignee
Yangzhong Shenyang Heat Exchange Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yangzhong Shenyang Heat Exchange Equipment Co ltd filed Critical Yangzhong Shenyang Heat Exchange Equipment Co ltd
Priority to CN202011045573.8A priority Critical patent/CN112160917A/en
Publication of CN112160917A publication Critical patent/CN112160917A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
    • 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
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium

Abstract

The invention discloses an air cooler internal circulation air guide device, which comprises an air cooler, a centrifugal fan, long baffles and short baffles, wherein the air cooler comprises an axial flow fan, a cooler shell and a heat exchange tube arranged in the cooler shell; the cooler shell is arranged at the top of the motor, the top of the cooler shell is connected with a centrifugal fan, and a volute impeller device of the centrifugal fan penetrates through the bottom surface of the top plate of the cooler shell; the volute impeller device of the centrifugal fan sucks air from the air inlet channel and discharges the air from the air outlet channel; the invention can effectively reduce the temperature of the motor and ensure the heat exchange effect of the motor.

Description

Air cooler inner loop air ducting
Technical Field
The invention relates to the technical field of heat exchangers, in particular to an air cooler internal circulation air guide device.
Background
The existing air-air cooler is a cooling device matched with a motor, and the temperature of the motor is reduced by heat exchange between normal-temperature air and hot air generated when the motor works.
The circulation of the hot side air of the existing air-air cooler is that the air passing through the motor rotor (the heat generated by the motor can be taken away after passing through the air-air cooler to form hot air) is continuously conveyed to the air-air cooler through the centrifugal force generated in the working and rotating process of the motor rotor, the conveying process is passive, the flow of the hot air is determined by the motor, the air-air cooler can not control the flow, in addition, the efficiency of conveying the hot air by the heat exchange mode is very low, and the problem of poor heat exchange effect is caused.
Disclosure of Invention
The invention aims to provide an air cooler internal circulation air guide device to solve the problems that the flow of hot air cannot be controlled and the heat exchange effect of a motor is poor in the prior art.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
an air cooler internal circulation air guide device comprises an air cooler, an axial flow fan, long baffles and short baffles, wherein the air cooler comprises a fan, a cooler shell and a heat exchange tube arranged in the cooler shell, two long baffles in the plumb direction are symmetrically arranged in the cooler shell, an air inlet channel in the plumb direction is formed between the two long baffles, an air outlet channel in the vertical direction is formed between the long baffles and a right tube plate of a cooler core, and an air outlet channel in the vertical direction is formed between the long baffles and a left tube plate of the cooler core;
the cooler shell is arranged at the top of the motor, the top of the cooler shell is connected with a centrifugal fan, and a volute impeller device of the centrifugal fan penetrates through the bottom surface of a top plate of the cooler shell; the volute impeller device of the centrifugal fan sucks air from the air inlet channel and discharges the air from the air outlet channel.
Furthermore, the bottom ends of the two long baffles are connected with the bottom plate of the cooler shell, an air inlet and an air outlet are arranged on the bottom plate, the air outlet is communicated with the air outlet channel, and the air outlet air inlet is communicated with the air inlet channel.
The top end of the long baffle is connected with the volute impeller device through a mounting plate.
Furthermore, a short baffle is arranged at the center line of the two long baffles, and the short baffle and the long baffles are parallel to each other;
the centrifugal fans are two in number, and the two centrifugal fans are symmetrical about a plane where the short baffle is located.
Furthermore, air deflectors are arranged among the long baffle, the left tube plate and the right tube plate and used for sending air sucked by the volute impeller device to an air outlet channel.
Furthermore, the air deflector comprises a first connecting plate, a second connecting plate and an arc-shaped plate, the first connecting plate is connected to one end of the arc-shaped plate, and the second connecting plate is connected to the other end of the arc-shaped plate;
the second connecting plate is parallel to the long baffle, the first connecting plate is perpendicular to the long baffle, and the circle center of the arc-shaped plate points to the long baffle.
Furthermore, the left end of the heat exchange tube is connected with the left tube plate, and the right end of the heat exchange tube is connected with the right tube plate.
Furthermore, the bottom end of the air inlet channel and the bottom end of the air outlet channel are both connected with temperature measuring elements, and the temperature measuring elements are in communication connection with the centrifugal fan.
According to the technical scheme, the embodiment of the invention at least has the following effects:
1. the centrifugal fan can adjust the rotating speed, different rotating speeds can be set according to the size and the rotating speed of the motor (the larger the motor is, the faster the rotating speed is, the more heat generated by an output shaft is), the flow of hot air sucked by the volute impeller device is controlled, the absorbed hot air is sent to the motor from the air outlet channel after heat exchange of the heat exchange pipe, the temperature of the motor can be effectively reduced, and the heat exchange effect of the motor is ensured;
2. the air inlet and the air outlet arranged on the bottom plate are respectively communicated with the air inlet channel and the air outlet channel, so that heat generated by the motor shaft can be effectively absorbed, cold air can be effectively blown onto the motor, and the heat dissipation effect on the motor is ensured; the bottom end of the long baffle is connected with the bottom plate, and the top end of the long baffle is connected with the volute impeller device through the mounting plate, so that an air inlet channel is prevented from being communicated with an air outlet channel, hot air and cold air are prevented from being mixed, and the heat exchange effect on the motor is ensured;
3. the two centrifugal fans are arranged, so that the heat exchange efficiency is improved, the bottom end of the short baffle is not connected with the bottom plate, the air inlet channels on the two sides of the short baffle are communicated, and the air inlet effect is ensured;
4. cold air flows to the second connecting plate through the first connecting plate and the arc-shaped plate and can smoothly enter the air outlet channel, and the air deflector can effectively convey the air to the air outlet channel, so that the loss of the cold air in the conveying process is reduced;
5. this device all is equipped with temperature element in air-out passageway and inlet air channel's bottom, and temperature element can effectual measurement air-out passageway and the air temperature of inlet air channel department, can be according to this rotational speed of adjusting centrifugal fan, guarantees the effectual heat dissipation of counter electrode.
Drawings
FIG. 1 is a general schematic diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view taken at I in FIG. 1;
FIG. 3 is a schematic view of a portion of the structure of FIG. 1;
FIG. 4 is a top view of a base plate in accordance with an embodiment of the present invention;
figure 5 is a schematic diagram of the operation of a volute impeller apparatus in accordance with an embodiment of the present invention.
Wherein: 11. a fan; 12. a right tube sheet; 13. a left tube sheet; 14. a top plate; 15. a base plate; 151. an air inlet; 152. an air outlet; 16. a heat exchange pipe; 2. a centrifugal fan; 3. a volute impeller device; 4. An air deflector; 5. a long baffle; 6. a short baffle; 7. and (7) mounting the plate.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
It should be noted that in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. As used in the description of the present invention, the terms "front," "back," "left," "right," "up," "down" and "in" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1 to 5, an air cooler internal circulation air guiding device comprises an air cooler, a centrifugal fan 2, long baffles 5 and short baffles 6, wherein the air cooler comprises an axial flow fan 11, a cooler shell and a heat exchange tube 16 arranged in the cooler shell, two long baffles 5 in the plumb direction are symmetrically arranged in the cooler shell, an air inlet channel in the plumb direction is formed between the two long baffles 5, an air outlet channel in the vertical direction is formed between the long baffles 5 and a right tube plate 12 of a cooler core, and an air outlet channel in the vertical direction is formed between the long baffles 5 and a left tube plate 13 of the cooler core; the cooler shell is arranged at the top of the motor, the centrifugal fan 2 is connected to the top of the cooler shell, and the volute impeller device 3 of the centrifugal fan 2 penetrates to the bottom surface of the top plate 14 of the cooler shell; the volute impeller device 3 of the centrifugal fan 2 operates to suck air from the air inlet channel and discharge the air from the air outlet channel.
The centrifugal fan can adjust the rotating speed, different rotating speeds can be set according to the size and the rotating speed of the motor (the larger the motor is, the faster the rotating speed is, the more heat generated by the output shaft is), the flow of hot air sucked by the volute impeller device is controlled, the absorbed hot air is sent to the motor from the air outlet channel after heat exchange through the heat exchange tube, the temperature of the motor can be effectively reduced, and the heat exchange effect of the motor is ensured.
Specifically, as shown in fig. 1, the cooler housing has a rectangular frame structure composed of a front side plate, a rear side plate, a left tube plate 13, a right tube plate 12, a top plate 14 and a bottom plate 15, a plurality of heat exchange tubes 16 are connected between the left tube plate 13 and the right tube plate 12, an axial flow fan 11 is arranged on the right side of the right tube plate 12, and a connection sleeve is arranged between the axial flow fan 11 and the right tube plate 12 to ensure that air of the axial flow fan 11 can be sent to the heat exchange tubes 16. The axial flow fan 11 is started to send the air on the right side to the right tube plate 12 and flow out through the left tube plate 13 at the left end of the heat exchange tube 16. The axial flow fan 11 works to ensure that cold air is continuously filled in the heat exchange pipe 16.
When the motor is used, the bottom plate 15 is installed on the top surface of the motor, the structure of the bottom plate 15 is shown in fig. 2 and 4, an air inlet 151 is formed in the middle of the bottom plate 15, and air outlets 152 are symmetrically formed in two ends of the air inlet 151.
As shown in fig. 1, two symmetrical centrifugal fans 2 are connected to the top surface of the top plate 14, and the volute impeller device 3 of the centrifugal fan 2 penetrates to the bottom surface of the top plate 14. The inside of the cooler shell is connected with a long baffle 5 and a short baffle 6, the bottom end of the long baffle 5 is connected with a bottom plate 15, and the top end of the long baffle is connected with the volute impeller device 3 through a mounting plate 7. The short baffle 6 is arranged at the central line of the connecting line of the two centrifugal fans 2, the length of the short baffle 6 is smaller than that of the long baffle 5, the bottom end of the short baffle 6 is not connected with the bottom plate 15, and the horizontal height of the top end is lower than that of the long baffle 5. The number of the long baffles 5 is two, the two long baffles 5 are symmetrically arranged about the short baffle 6, and the long baffles 5 and the short baffle 6 are arranged along the plumb direction. An air inlet channel is formed between the two long baffles 5, an air outlet channel is formed between the short baffle 6 and the left tube plate 13 and the right tube plate 12, the air outlet channel is communicated with an air outlet 152 on the bottom plate 15, and the air inlet channel is communicated with an air inlet 151 on the bottom plate 15.
During the use, start centrifugal fan 2, centrifugal fan 2's spiral case impeller device 3 work inhales the air from inlet air channel, is about to absorb from air intake 151 the heat that motor work produced, and the air is through heat exchange tube 16 department heat transfer and from flowing to the air-out passageway, through heat exchange tube 16 heat transfer back once more, flows to the motor from air outlet 152, has effectively reduced the heat that the motor shaft of motor produced, has guaranteed the cooling effect to the motor.
In order to guarantee that air of the air inlet channel can be effectively sent to the air outlet channel, the air guide plate 4 is further arranged on the device, the front end and the rear end of the air guide plate 4 are connected with the front side plate and the rear side plate, connection stability of the air guide plate 4 is guaranteed, and the connection mode adopts welding connection, so that stability is guaranteed. The air deflector 4 comprises a first connecting plate, a second connecting plate and an arc-shaped plate, wherein the first connecting plate is connected to the top end of the arc-shaped plate, and the second connecting plate is connected to the bottom end of the arc-shaped plate; the second connecting plate is parallel to the long baffle 5, the first connecting plate is perpendicular to the long baffle 5, and the circle center of the arc plate points to the long baffle 5. The air deflector 4 can smoothly enter the air outlet channel, air can be effectively conveyed to the air outlet channel through the air deflector, and loss of cold air in the conveying process is reduced.
In order to monitor the heat dissipation condition of the motor in real time, temperature measuring elements are arranged above the air inlet and the air outlet and are arranged at the bottom end of the air inlet channel and the bottom end of the air outlet channel, and the measuring effect on the temperature of the motor can be guaranteed. The temperature measuring element adopts a temperature sensor or a platinum thermal resistor, so that the measuring effect is ensured. Temperature measurement element and centrifugal fan communication connection (can set up the controller between the two) to control centrifugal fan start-stop and rotational speed, through the height of the temperature of temperature measurement element measurement, control centrifugal fan's rotational speed, if the temperature of temperature measurement element measurement above the air intake 151 is higher, then control centrifugal fan and rotate with faster rotational speed, the temperature measurement element of air outlet top is used for reflecting centrifugal fan to the radiating effect of motor, if the radiating effect can not reach the expectation, need further increase centrifugal fan 2's rotational speed.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims (7)

1. The air cooler internal circulation air guide device is characterized by comprising an air cooler, a centrifugal fan (2), a long baffle (5) and a short baffle (6), wherein the air cooler comprises an axial flow fan (11), a cooler shell and a heat exchange tube (16) arranged in the cooler shell, the cooler shell is internally and symmetrically provided with two long baffles (5) in the plumb direction, an air inlet channel in the plumb direction is formed between the two long baffles (5), an air outlet channel in the vertical direction is formed between the long baffle (5) and a right tube plate (12) of a cooler core body, and an air outlet channel in the vertical direction is formed between the long baffle (5) and a left tube plate (13) of the cooler core body;
the cooler shell is arranged at the top of the motor, the top of the cooler shell is connected with a centrifugal fan (2), and a volute impeller device (3) of the centrifugal fan (2) penetrates through the bottom surface of a top plate (14) of the cooler shell; the volute impeller device (3) of the centrifugal fan (2) works to suck air from the air inlet channel and discharge the air from the air outlet channel.
2. The air cooler internal circulation air guiding device as claimed in claim 1, wherein the bottom ends of the two long baffles (5) are connected to a bottom plate (15) of the cooler casing, an air inlet (151) and an air outlet (152) are arranged on the bottom plate (15), the air outlet (152) is communicated with the air outlet channel, and the air outlet inlet (151) is communicated with the air inlet channel.
The top end of the long baffle (5) is connected with the volute impeller device (3) through a mounting plate (7).
3. The air cooler internal circulation air guide device as claimed in claim 1, wherein a short baffle (6) is further arranged at the central line of the two long baffles (5), and the short baffle (6) and the long baffles (5) are parallel to each other;
the number of the centrifugal fans (2) is two, and the two centrifugal fans (2) are symmetrical about a plane where the short baffle (6) is located.
4. The air cooler internal circulation air guiding device as claimed in claim 1, wherein an air deflector (4) is arranged between the long baffle (5) and the left tube plate (13) and the right tube plate (12), and the air deflector (4) is used for sending air sucked by the volute impeller device (3) to an air outlet channel.
5. The air cooler internal circulation air guiding device as defined in claim 4, wherein the air deflector (4) comprises a first connecting plate, a second connecting plate and an arc-shaped plate, the first connecting plate is connected to one end of the arc-shaped plate, and the second connecting plate is connected to the other end of the arc-shaped plate;
the second connecting plate is parallel to the long baffle (5), the first connecting plate is perpendicular to the long baffle (5), and the circle center of the arc-shaped plate points to the long baffle (5).
6. The air cooler internal circulation air guide device as claimed in claim 1, wherein the left end of the heat exchange tube (16) is connected with the left tube plate (13), and the right end of the heat exchange tube (16) is connected with the right tube plate (12).
7. The air cooler internal circulation air guiding device as claimed in claim 1, wherein the bottom end of the air inlet channel and the bottom end of the air outlet channel are both connected with a temperature measuring element, and the temperature measuring element is in communication connection with the centrifugal fan (2).
CN202011045573.8A 2020-09-29 2020-09-29 Air cooler inner loop air ducting Pending CN112160917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011045573.8A CN112160917A (en) 2020-09-29 2020-09-29 Air cooler inner loop air ducting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011045573.8A CN112160917A (en) 2020-09-29 2020-09-29 Air cooler inner loop air ducting

Publications (1)

Publication Number Publication Date
CN112160917A true CN112160917A (en) 2021-01-01

Family

ID=73860723

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011045573.8A Pending CN112160917A (en) 2020-09-29 2020-09-29 Air cooler inner loop air ducting

Country Status (1)

Country Link
CN (1) CN112160917A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11324996A (en) * 1998-05-11 1999-11-26 Hitachi Ltd Pumping installation
JP2000116060A (en) * 1998-09-29 2000-04-21 Nishishiba Electric Co Ltd Rotating electric machine
CN101442238A (en) * 2008-09-12 2009-05-27 永济新时速电机电器有限责任公司 Hollow cooler for motor
CN101826776A (en) * 2010-01-12 2010-09-08 苏州顶裕风机科技有限公司 Air-cooling system device of large-sized motor
CN101834490A (en) * 2010-05-04 2010-09-15 浙江尔格科技有限公司 Cooler of wind power generator
CN201635814U (en) * 2010-02-10 2010-11-17 苏州特谱风能技术有限公司 Air cooling equipment for wind generating set
CN205945408U (en) * 2016-08-24 2017-02-08 浙江尔格科技股份有限公司 Heat pipe cooler for generator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11324996A (en) * 1998-05-11 1999-11-26 Hitachi Ltd Pumping installation
JP2000116060A (en) * 1998-09-29 2000-04-21 Nishishiba Electric Co Ltd Rotating electric machine
CN101442238A (en) * 2008-09-12 2009-05-27 永济新时速电机电器有限责任公司 Hollow cooler for motor
CN101826776A (en) * 2010-01-12 2010-09-08 苏州顶裕风机科技有限公司 Air-cooling system device of large-sized motor
CN201635814U (en) * 2010-02-10 2010-11-17 苏州特谱风能技术有限公司 Air cooling equipment for wind generating set
CN101834490A (en) * 2010-05-04 2010-09-15 浙江尔格科技有限公司 Cooler of wind power generator
CN205945408U (en) * 2016-08-24 2017-02-08 浙江尔格科技股份有限公司 Heat pipe cooler for generator

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Application publication date: 20210101