CN202325800U - Cooling system for engine, and engineering machinery - Google Patents
Cooling system for engine, and engineering machinery Download PDFInfo
- Publication number
- CN202325800U CN202325800U CN2011204524169U CN201120452416U CN202325800U CN 202325800 U CN202325800 U CN 202325800U CN 2011204524169 U CN2011204524169 U CN 2011204524169U CN 201120452416 U CN201120452416 U CN 201120452416U CN 202325800 U CN202325800 U CN 202325800U
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- controller
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- cooling system
- fan
- temperature
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Abstract
The utility model discloses a cooling system for an engine, and engineering machinery. The cooling system comprises a heat radiator, a fan opposite to the heat radiator, a fan driving unit connected with the fan in a driving manner, a temperature sensor, a rotating speed sensor and a controller which is electrically connected with the fan driving unit, the temperature sensor and the rotating speed sensor respectively, wherein the controller controls the fan driving unit to adjust the rotating speed of the fan according to a temperature difference value of cooling liquid of the engine and the rotating speed of the engine, which is measured by the rotating speed sensor; and the temperature difference value is a difference value between real-time temperature of the cooling liquid of the engine, which is measured by the temperature sensor, and the optimal temperature of the cooling liquid of the engine. The controller of the cooling system can control the rotating speed of the fan according to the temperature difference value of the cooling liquid and the rotating speed of the engine, so that the cooling system can supply the optimal working temperature to motion elements such as the engine, a speed changing box and the like of the engineering machinery; and power loss of the engine can be reduced.
Description
Technical field
The utility model relates to engine art, more specifically, relates to a kind of cooling system and engineering machinery of motor.
Background technique
Along with the development of engineering machinery (particularly Mobile crane) to maximization, comfortableization of operation and high security direction; And country is to the raising of vehicular discharge pollutant requirement; Make high power engine and band torque converter and the slow automatic transmission of fluid power obtain application more and more widely; Accordingly, the heat radiation to the cooling system of motor, speed changer requires also increasingly high.
In the existing technology,, in cooling system, be provided with main radiator and secondary radiator for satisfying the radiating requirements of motor and speed changer.Wherein, main radiator and intercooler connect to one, and to main radiator cooling medium are provided by the fan of the front end of the bent axle that is installed on motor; The bottom of secondary radiator is equipped with electronic fan, and electronic fan provides cooling medium to secondary radiator.Main radiator is used to satisfy the heat radiation requirement of motor, can pass through the aperture of thermostat control valve, and then control gets into the water yield of the main radiator of motor.Secondary radiator is used for the heat radiation of speed changer, and wherein, the oil cooler of speed changer is connected with motor through thermostat with after secondary radiator is connected in series again.
The circulation power of the cooling system of engineering machinery of the prior art (for example hoist) is all taken from the motor of this project machinery, and is that radiator provides the rotating speed of the fan of cooling medium to be set to only relevant with engine speed definite value (or directly being set at a constant definite value).The heating value of each heater element under different operating modes has very big-difference, and further, the heat dissipating capacity of the radiator of same Dimensions is closely-related with the cooling air volume of the outside of flowing through radiator again.Cooling system of the prior art can't provide the most appropriate heat dissipating capacity to its motor according to the actual heating value of engineering machinery, thereby can not guarantee the optimum working temperature of each movement parts, thereby has increased the damage probability of motor elements such as motor, speed changer.Simultaneously, also increase the engine power that cooling system consumes, reduced the utilization ratio of engine power.In addition; Because the electronic fan of the bottom of secondary radiator adopts motor driving; And electronic fan can produce instant high-voltage starting moment; This instant high-voltage can produce impact to other electronic components on the engineering machinery even can damage other electronic components, and has greatly increased the burden of motor of engine.At last, cooling system of the prior art can't join the rotating speed of fan and the temperature correlation of cooling liquid, makes cooling system remain on full load condition from start to finish; But in the middle of the reality, motor changes the requirement of cooling system, therefore; Can cause the waste of power, can not make cooling system be in real time that (especially, this Optimal Temperature changes under the optimum operating temperature; Under different working conditions, has different Optimal Temperature).
The model utility content
The utility model aims to provide a kind of cooling system and engineering machinery of motor, can't real-time regulated with the rotation speed of the fan that solves cooling system in the existing technology, so that can not make cooling system be in the problem of optimum operating temperature.
For solving the problems of the technologies described above, according to an aspect of the utility model, a kind of cooling system of motor is provided, comprising: radiator; Fan, fan and radiator relatively are provided with; The fans drive unit, the fans drive unit is connected with fans drive; Temperature transducer; Speed probe; Controller, controller are electrically connected with fans drive unit, temperature transducer and speed probe respectively; The rotating speed control fans drive unit of the motor that controller records according to the temperature departure value and the speed probe of the cooling liquid of motor is to regulate the rotating speed of fan; Wherein, the temperature departure value is the difference of optimum temperature of cooling liquid of real time temperature and motor of the cooling liquid of the motor that records of temperature transducer.
Further, the fans drive unit comprises variable displacement pump and the fixed displacement motor that is connected with variable displacement pump, the rotation of fixed displacement motor drive fan, and controller controlled variable pump is exported to the flow of fixed displacement motor to regulate the rotating speed of fan.
Further, when the temperature departure value less than zero the time, controller reduces the variable pump delivery; When the temperature departure value equalled zero, it is constant that controller is kept the variable pump delivery; When the temperature departure value greater than zero the time, controller increases the variable pump delivery.
Further, the fans drive unit comprises metering pump, Proportional valve and fixed displacement motor, and metering pump passing ratio valve is connected with fixed displacement motor, the rotation of fixed displacement motor drive fan, and the aperture of controller control ratio valve is exported to the flow of fixed displacement motor with the control metering pump.
Further, when the temperature departure value less than zero the time, controller reduces the aperture of Proportional valve; When the temperature departure value equalled zero, it is constant that controller is kept the aperture of Proportional valve; When the temperature departure value greater than zero the time, the aperture of controller scaling up valve.
Further, the fans drive unit comprises metering pump and the variable displacement motor that is connected with metering pump, and the discharge capacity of controller controlled variable motor is to regulate the rotating speed of fan.
Further, when the temperature departure value less than zero the time, controller increases the discharge capacity of variable displacement motor; When the temperature departure value equalled zero, it is constant that controller is kept the discharge capacity of variable displacement motor; When the temperature departure value greater than zero the time, controller reduces the discharge capacity of variable displacement motor.
Further, controller is PLC.
Further, fan is an axial fan.
Another aspect according to the utility model provides a kind of engineering machinery, and it comprises motor and the cooling system that motor is dispelled the heat, and this cooling system is above-mentioned cooling system.
The controller of the utility model can be realized the control to the rotating speed of fan according to the temperature departure of cooling liquid, the rotating speed of motor; Realized optimum management to the cooling system of engineering machinery; Make cooling system best operating temperature is provided for motor elements such as the motor of engineering machinery, gearbox, and can reduce the loss of engine power.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 has schematically shown the structural representation of the utility model;
Fig. 2 has schematically shown the structural representation of first kind of mode of execution of fans drive unit;
Fig. 3 has schematically shown the structural representation of second kind of mode of execution of fans drive unit; And
Fig. 4 has schematically shown the structural representation of the third mode of execution of fans drive unit.
Embodiment
Embodiment to the utility model is elaborated below in conjunction with accompanying drawing, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As an aspect of the utility model, the utility model provides a kind of cooling system of motor.As shown in Figure 1, the cooling system in the utility model comprises: radiator, fan 1, fans drive unit, temperature transducer, speed probe and controller.Wherein, fan and radiator relatively are provided with; The fans drive unit is connected with fans drive; Controller is electrically connected with fans drive unit, temperature transducer and speed probe respectively; The rotating speed control fans drive unit of the motor that controller records according to the temperature departure value and the speed probe of the cooling liquid of motor is to regulate the rotating speed of fan; Wherein, the temperature departure value is the difference of optimum temperature of cooling liquid of real time temperature and motor of the cooling liquid of the motor that records of temperature transducer.Especially; Correlation logic between temperature departure value, engine speed and the rotation speed of the fan can be set in controller in advance, during cooling system work, read the temperature of the cooling liquid of motor earlier through temperature transducer; And the rotating speed of synchronous acquisition motor; After through controller said temperature and rotary speed information being handled then, send control command to the fan driver element, to regulate the rotating speed of fan.Therefore, the utility model can be regulated the rotating speed of fan in real time, so that cooling system is under the optimum operating temperature, and no longer need be directly installed on fan on the bent axle of motor, makes installation more flexible.In addition, because the rotating speed of fan is a real-time regulated, therefore, can in entire work process, all make fan keep constant rotating speed all the time, thereby save energy consumption.In addition, this cooling system also has simple in structure, reliable performance, characteristics that cost is low.Preferably, controller is PLC (programmable controller).Preferably, fan is an axial fan.
Fig. 2 shows the structural representation of first kind of mode of execution of fans drive unit.As shown in Figure 2, the fans drive unit comprises variable displacement pump and the fixed displacement motor that is connected with variable displacement pump, the rotation of fixed displacement motor drive fan, and controller controlled variable pump is exported to the flow of fixed displacement motor to regulate the rotating speed of fan.Therefore, just control can be realized, thereby also just adjusting can be realized the rotating speed of fan to the rotating speed of fixed displacement motor through the Moderator Variable pump delivery.Preferably, when the temperature departure value less than zero the time, controller reduces the variable pump delivery; When the temperature departure value equalled zero, it is constant that controller is kept the variable pump delivery; When the temperature departure value greater than zero the time, controller increases the variable pump delivery.Preferably; Controller through the temperature departure value with and and the rotating speed of the discharge capacity of the rotating speed of motor, variable pump delivery, fixed displacement motor and fixed displacement motor between relation; Calculate the displacement variation value of variable displacement pump; And this displacement variation value is changed into electrical signal export to variable displacement pump, thereby realize control to the variable pump delivery.
Fig. 3 shows the structural representation of second kind of mode of execution of fans drive unit.As shown in Figure 3, the fans drive unit comprises metering pump, Proportional valve and fixed displacement motor, and metering pump passing ratio valve is connected with fixed displacement motor, the rotation of fixed displacement motor drive fan, and the aperture of controller control ratio valve is exported to the flow of fixed displacement motor with the control metering pump.Therefore, controller just can be controlled the oil mass that gets into fixed displacement motor through the aperture of this Proportional valve of control, with the rotating speed of control fixed displacement motor, thereby realizes the adjusting to the rotating speed of fan.Preferably, when the temperature departure value less than zero the time, controller reduces the aperture of Proportional valve; When the temperature departure value equalled zero, it is constant that controller is kept the aperture of Proportional valve; When the temperature departure value greater than zero the time, the aperture of controller scaling up valve.Preferably; Controller through the temperature departure value and and the rotating speed of motor, the quantitative relation between the rotating speed of discharge capacity and the fixed displacement motor of aperture, the fixed displacement motor of pump delivery, Proportional valve; Calculate the changes in flow rate value of the hydraulic oil that gets into fixed displacement motor; And export to Proportional valve after this changes in flow rate value is converted into electrical signal, thus the aperture of control ratio valve, the rotating speed of fixed displacement motor is adjusted to the corresponding value of best heat dissipation potential that can provide with cooling system.
Fig. 4 shows the structural representation of the third mode of execution of fans drive unit.As shown in Figure 4, the fans drive unit comprises metering pump and the variable displacement motor that is connected with metering pump, and the discharge capacity of controller controlled variable motor is to regulate the rotating speed of fan.Preferably, when the temperature departure value less than zero the time, controller increases the discharge capacity of variable displacement motor; When the temperature departure value equalled zero, it is constant that controller is kept the discharge capacity of variable displacement motor; When the temperature departure value greater than zero the time, controller reduces the discharge capacity of variable displacement motor.Preferably; Controller according to the temperature departure value and and the rotating speed of motor, the quantitative relation between the rotating speed of discharge capacity and the variable displacement motor of pump delivery, variable displacement motor; Calculate the changes in flow rate value of variable displacement motor, and this changes in flow rate value is changed into electrical signal export to variable displacement motor, thus the discharge capacity of Moderator Variable motor; With the purpose of the rotating speed that reaches the Moderator Variable motor, and finally regulate the rotating speed of fan.
As another aspect of the utility model, the utility model provides a kind of engineering machinery, and it comprises motor and the cooling system that motor is dispelled the heat, and this cooling system is the cooling system among above-mentioned each embodiment.Preferably, this project machinery is hoist.
The controller of the utility model can be realized the control to the rotating speed of fan according to the temperature departure of cooling liquid, the rotating speed of motor; Realized optimum management to the cooling system of engineering machinery; Make cooling system best operating temperature is provided for motor elements such as the motor of engineering machinery, gearbox, and can reduce the loss of engine power.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. the cooling system of a motor is characterized in that, comprising:
Radiator;
Fan (1), said fan (1) relatively is provided with said radiator;
The fans drive unit, said fans drive unit is connected with said fans drive;
Temperature transducer;
Speed probe;
Controller, said controller are electrically connected with said fans drive unit, said temperature transducer and said speed probe respectively;
Said controller is controlled said fans drive unit to regulate the rotating speed of said fan according to the rotating speed of the said motor that the temperature departure value and the said speed probe of the cooling liquid of said motor records; Wherein, said temperature departure value is the difference of optimum temperature of cooling liquid of real time temperature and said motor of the cooling liquid of the said motor that records of said temperature transducer.
2. cooling system according to claim 1; It is characterized in that; Said fans drive unit comprises variable displacement pump and the fixed displacement motor that is connected with said variable displacement pump; Said fixed displacement motor drives the rotation of said fan, and said controller is controlled flow that said variable displacement pump exports to said fixed displacement motor to regulate the rotating speed of said fan.
3. cooling system according to claim 2 is characterized in that, when said temperature departure value less than zero the time, said controller reduces said variable pump delivery; When said temperature departure value equalled zero, it is constant that said controller is kept said variable pump delivery; When said temperature departure value greater than zero the time, said controller increases said variable pump delivery.
4. cooling system according to claim 1; It is characterized in that; Said fans drive unit comprises metering pump, Proportional valve and fixed displacement motor; Said metering pump is connected with said fixed displacement motor through said Proportional valve, and said fixed displacement motor drives said fan rotation, and said controller is controlled the aperture of said Proportional valve and exported to the flow of said fixed displacement motor to control said metering pump.
5. cooling system according to claim 4 is characterized in that, when said temperature departure value less than zero the time, said controller reduces the aperture of said Proportional valve; When said temperature departure value equalled zero, it is constant that said controller is kept the aperture of said Proportional valve; When said temperature departure value greater than zero the time, said controller increases the aperture of said Proportional valve.
6. cooling system according to claim 1 is characterized in that, said fans drive unit comprises metering pump and the variable displacement motor that is connected with said metering pump, and said controller is controlled the discharge capacity of said variable displacement motor to regulate the rotating speed of said fan.
7. cooling system according to claim 6 is characterized in that, when said temperature departure value less than zero the time, said controller increases the discharge capacity of said variable displacement motor; When said temperature departure value equalled zero, it is constant that said controller is kept the discharge capacity of said variable displacement motor; When said temperature departure value greater than zero the time, said controller reduces the discharge capacity of said variable displacement motor.
8. according to each described cooling system among the claim 1-7, it is characterized in that said controller is PLC or single-chip microcomputer.
9. according to each described cooling system among the claim 1-7, it is characterized in that said fan is an axial fan.
10. engineering machinery, it comprises motor and to the cooling system that said motor dispels the heat, it is characterized in that said cooling system is each described cooling system among the claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204524169U CN202325800U (en) | 2011-11-15 | 2011-11-15 | Cooling system for engine, and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204524169U CN202325800U (en) | 2011-11-15 | 2011-11-15 | Cooling system for engine, and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202325800U true CN202325800U (en) | 2012-07-11 |
Family
ID=46437783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204524169U Expired - Fee Related CN202325800U (en) | 2011-11-15 | 2011-11-15 | Cooling system for engine, and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202325800U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527566A (en) * | 2013-10-16 | 2014-01-22 | 上海中联重科桩工机械有限公司 | Engineering machine heat radiating control device, system and method and engineering machine |
| CN110159409A (en) * | 2019-06-27 | 2019-08-23 | 北京三一智造科技有限公司 | Cooling device, rotary drilling rig and engine cooling method |
| CN110486138A (en) * | 2017-08-29 | 2019-11-22 | 熵零技术逻辑工程院集团股份有限公司 | A kind of pneumatic energy regenerative motor cooling system |
| CN111779561A (en) * | 2020-05-29 | 2020-10-16 | 中通客车控股股份有限公司 | Engine cooling system and regulation and control method |
| CN111852639A (en) * | 2020-07-24 | 2020-10-30 | 重庆金之川动力机械有限公司 | Environment-friendly intelligent control system for refrigeration generator set of cold-chain logistics vehicle |
| CN112177091A (en) * | 2020-10-14 | 2021-01-05 | 徐州徐工矿业机械有限公司 | Independent heat dissipation system for hydraulic excavator and control method |
| CN112983619A (en) * | 2021-03-05 | 2021-06-18 | 柳州柳工挖掘机有限公司 | Engineering machine heat dissipation system, electronic fan control method and engineering machine |
-
2011
- 2011-11-15 CN CN2011204524169U patent/CN202325800U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527566A (en) * | 2013-10-16 | 2014-01-22 | 上海中联重科桩工机械有限公司 | Engineering machine heat radiating control device, system and method and engineering machine |
| CN103527566B (en) * | 2013-10-16 | 2015-10-28 | 上海中联重科桩工机械有限公司 | A kind of engineering machinery radiating control equipment, system, method and engineering machinery |
| CN110486138A (en) * | 2017-08-29 | 2019-11-22 | 熵零技术逻辑工程院集团股份有限公司 | A kind of pneumatic energy regenerative motor cooling system |
| CN110159409A (en) * | 2019-06-27 | 2019-08-23 | 北京三一智造科技有限公司 | Cooling device, rotary drilling rig and engine cooling method |
| CN110159409B (en) * | 2019-06-27 | 2023-11-17 | 北京三一智造科技有限公司 | Cooling device, rotary drilling rig and engine cooling method |
| CN111779561A (en) * | 2020-05-29 | 2020-10-16 | 中通客车控股股份有限公司 | Engine cooling system and regulation and control method |
| CN111779561B (en) * | 2020-05-29 | 2021-07-16 | 中通客车控股股份有限公司 | Engine cooling system and regulation and control method |
| CN111852639A (en) * | 2020-07-24 | 2020-10-30 | 重庆金之川动力机械有限公司 | Environment-friendly intelligent control system for refrigeration generator set of cold-chain logistics vehicle |
| CN112177091A (en) * | 2020-10-14 | 2021-01-05 | 徐州徐工矿业机械有限公司 | Independent heat dissipation system for hydraulic excavator and control method |
| CN112983619A (en) * | 2021-03-05 | 2021-06-18 | 柳州柳工挖掘机有限公司 | Engineering machine heat dissipation system, electronic fan control method and engineering machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20151115 |
|
| EXPY | Termination of patent right or utility model |