CN212078081U - Loader cooling system - Google Patents
Loader cooling system Download PDFInfo
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- CN212078081U CN212078081U CN202020721127.3U CN202020721127U CN212078081U CN 212078081 U CN212078081 U CN 212078081U CN 202020721127 U CN202020721127 U CN 202020721127U CN 212078081 U CN212078081 U CN 212078081U
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Abstract
The utility model relates to a loader cooling system, including transmission oil radiator, hydraulic oil radiator, coolant liquid radiator, air-to-air intercooling radiator, air conditioner condenser and be used for the fan of the heat dissipation of blowing, its characterized in that, be provided with a proportional control valve respectively on the pipeline of transmission oil radiator, hydraulic oil radiator, coolant liquid radiator, air-to-air intercooling radiator and air conditioner condenser's thermite entry end; the pipelines at the outlet ends of the transmission oil radiator, the hydraulic oil radiator, the cooling liquid radiator and the air-to-air intercooling radiator air-conditioning condenser after the hot agent outlet ends are mixed are respectively provided with a temperature sensor; the proportional control valve and the temperature sensor are respectively in signal connection with the controller, and the controller can control the flow of the proportional control valve. The transmission oil temperature sensor, the hydraulic oil temperature sensor, the cooling liquid temperature sensor, the air-to-air intercooling temperature sensor and the refrigerant temperature sensor are all thermistor type sensors.
Description
Technical Field
The utility model relates to a loader technical field, concretely relates to loader cooling system.
Background
Along with the loader work condition is more and more complicated, and operational environment difference is great simultaneously, and the heat dissipation demand of each part of loader is great along with environment, operating mode variation, and different operating system, different working medium have different heat dissipation demands. At present, a heat dissipation system of a loader comprises a transmission oil heat sink for dissipating heat of transmission oil of a gearbox, a hydraulic oil heat sink for dissipating heat of hydraulic oil in a steering hydraulic system and a working hydraulic system, a cooling liquid heat sink for dissipating heat of engine cooling liquid, an air-to-air inter-cooling heat sink for dissipating heat of hot air pressurized by an engine, and an air-conditioning condenser for dissipating heat of high-temperature and high-pressure gas behind an air-conditioning compressor.
The inventor thinks that the existing cooling system of the loader often has the problem that the actual cooling capacity of each radiator is not matched with the required cooling capacity of the loader, and has the defects of less cooling demand and large actual cooling capacity; or the heat dissipation requirement is large, the actual heat dissipation capacity is insufficient, and the like, so that the production efficiency of the loader is influenced, and serious energy waste exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of above-mentioned prior art, provide a loader cooling system can solve the unmatched problem of actual heat dissipation capacity and the demand heat of loader of each radiator.
To achieve the above objects, one or more embodiments of the present invention provide a heat dissipation system for a loader, which includes a transmission oil heat sink, a hydraulic oil heat sink, a coolant heat sink, an air-to-air cooling heat sink, an air conditioning condenser, and a fan for blowing heat dissipation. The pipelines at the heat agent inlet ends of the transmission oil radiator, the hydraulic oil radiator, the cooling liquid radiator, the air-to-air intercooling radiator and the air-conditioning condenser are respectively provided with a proportional control valve;
the pipelines at the outlet ends of the transmission oil radiator, the hydraulic oil radiator, the cooling liquid radiator, the air-to-air intercooling radiator and the air-conditioning condenser are respectively provided with a temperature sensor after mixing;
the proportional control valve and the temperature sensor are respectively in signal connection with the controller, and the controller can control the proportional control valve so as to control the flow entering the radiator.
One or more of the technical schemes have the following beneficial effects:
the heat dissipation of a plurality of radiators is realized by adopting one fan, and only one group of air inlets and air outlets are required to be arranged;
by adopting the combination of the proportional control valve and the fan, the flow of the liquid or gas to be cooled in each radiator can be controlled by utilizing the proportional control valve, and the heat radiation efficiency of the corresponding radiator is changed by changing the flow; the heat dissipation efficiency can also be changed by changing the wind speed of the fan. The heat dissipation efficiency of the radiator is changed in a double-adjustment mode, and the influence of adjusting the rotating speed of the fan on other radiators when the heat dissipation capacity of a single radiator does not meet the requirement is avoided.
The mixed temperature of the heat agent outlet end of each radiator can be monitored in real time through the temperature sensor, and the phenomenon that the temperature of the heat agent is too low when the heat dissipation capacity is too large is avoided; when the heat dissipation capacity is small, the temperature of the heating agent is too high.
The controller is adopted to control the rotating speed of the motor in the fan, so that the air exhaust amount of the fan is controlled, and the heat dissipation amount of the heat dissipation system is conveniently controlled.
Drawings
Fig. 1 is a schematic structural diagram of a heat dissipation system of a loader according to the present invention;
1. a transmission oil radiator; 101. a transmission oil proportional control valve; 102. a transmission oil temperature sensor; 103. a transmission oil tank; 2. a hydraulic oil radiator; 201-hydraulic oil proportional control valve, 202, hydraulic oil temperature sensor; 203. a hydraulic oil tank; 3. a coolant radiator; 301. a coolant proportional control valve 302, a coolant temperature sensor; 303. a coolant tank; 4. an air-to-air intercooling radiator; 401. an air-to-air intercooling proportional control valve; 402. an air-to-air intercooling temperature sensor; 403-air-to-air cool air box; 5. an air conditioning condenser; 501. a refrigerant proportional control valve; 502. a refrigerant temperature sensor; 503. a liquid reservoir; 6. a fan; 6011. a rotating speed electromagnetic valve; 6012. a reverse solenoid valve; 602. a motor; 7. a controller; 8. and a fan reverse rotation switch.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of the stated features; a step of; operating; a device; components, and/or combinations thereof.
In a typical embodiment of the present invention, as shown in fig. 1, a heat dissipation system for a loader is provided, which includes a transmission oil heat sink, a hydraulic oil heat sink, a cooling liquid heat sink, an air-to-air cooling heat sink, an air conditioner condenser and a fan for blowing heat. And pipelines at the hot agent inlet ends of the transmission oil radiator, the hydraulic oil radiator, the cooling liquid radiator, the air-to-air intercooling radiator and the air-conditioning condenser are respectively provided with a proportional control valve.
A transmission oil proportional control valve 101 is arranged on a pipeline at a heat agent inlet end of the transmission oil radiator 1, and a transmission oil temperature sensor 102 is arranged on a pipeline after a heat agent outlet end of the transmission oil radiator 1 is mixed; the transmission oil temperature sensor 102 is connected with the controller 7, and the controller 7 is connected with the transmission oil ratio control valve 101.
The hot agent inlet end of the transmission oil radiator 1 receives transmission oil which flows out of a transmission shell and needs to dissipate heat through a pipeline, and the transmission oil is mixed with hot agent which does not pass through the radiator after being dissipated heat by the transmission oil radiator 1 and then is pumped to a transmission through the hot agent outlet end through an oil pump for working of the transmission.
A hydraulic oil proportional control valve 201 is arranged on a pipeline at a thermal agent inlet end of the hydraulic oil radiator 2, and a hydraulic oil temperature sensor 202 is arranged on a pipeline after a thermal agent outlet end of the hydraulic oil radiator 2 is mixed; the hydraulic oil temperature sensor 202 is connected with the controller 7, and the controller 7 is connected with the hydraulic oil proportional control valve 201.
The hot agent inlet end of the hydraulic oil radiator 2 receives hydraulic oil which flows out from the steering hydraulic system and the working hydraulic system and needs to be radiated through pipelines, and the hydraulic oil is radiated by the hydraulic oil radiator 2, mixed with a hot agent which does not pass through the radiator and pumped to the steering hydraulic system and the working hydraulic system through the oil pump from the hot agent outlet end to work again.
A coolant proportional control valve 301 is arranged on a pipeline at a hot agent inlet end of the coolant radiator 3, and a coolant temperature sensor 302 is arranged on a pipeline after a hot agent outlet end of the coolant radiator 3 is mixed; the coolant temperature sensor 302 is connected to the controller 7, and the controller 7 is connected to the coolant proportional control valve 301.
The coolant inlet end of the coolant radiator 3 receives coolant which flows out from the engine coolant flow channel and needs heat dissipation through a pipeline, the coolant is subjected to heat dissipation through the coolant radiator 3 and then mixed with coolant which does not pass through the radiator, and the coolant enters the engine coolant system through the coolant outlet end to work again.
An air-to-inter-cooling proportional control valve 401 is arranged on a pipeline at a hot agent inlet end of the air-to-inter-cooling radiator 4, and an air-to-inter-cooling temperature sensor 402 is arranged on a pipeline after a hot agent outlet end of the air-to-inter-cooling radiator 4 is mixed; the air-air intercooling temperature sensor 402 is connected with the controller 7, and the controller 7 is connected with the air-air intercooling proportional control valve 401.
The hot agent inlet end of the air-air inter-cooling radiator 4 receives hot air which flows out from the air outlet pipe of the engine and needs to be radiated through a pipeline, and the hot air is radiated by the air-air inter-cooling radiator 4, mixed with hot agent which does not pass through the radiator and then enters the air inlet pipe of the engine through the hot agent outlet end.
A refrigerant proportional control valve 501 is arranged on a pipeline at the hot agent inlet end of the air-conditioning condenser 5, and a refrigerant temperature sensor 502 is arranged on a pipeline after the hot agent outlet end of the air-conditioning condenser 5 is mixed; the refrigerant temperature sensor 502 is connected with the controller 7, and the controller 7 is connected with the refrigerant proportional control valve 501;
the hot agent inlet end of the air conditioner condenser 5 receives the refrigerant which flows out from the air conditioner compressor and needs heat dissipation through a pipeline, and the refrigerant is mixed with the hot agent which does not pass through the radiator after being dissipated heat by the air conditioner condenser 5 and then enters the air conditioner from the hot agent outlet end to work again.
And the outlet end of the transmission oil radiator is communicated with the transmission oil tank. And the outlet end of the hydraulic oil radiator is communicated with a hydraulic oil tank. The outlet end of the air-air inter-cooling radiator is communicated with the air-air inter-cooling air tank. And the outlet end of the cooling liquid radiator is communicated with a cooling liquid water tank. The outlet end of the air conditioner condenser is communicated with the liquid receiver.
Preferably, the transmission oil temperature sensor 102, the hydraulic oil temperature sensor 202, the coolant temperature sensor 302, the air-to-air cooling temperature sensor 402, and the refrigerant temperature sensor 502 are all thermistor type sensors.
Preferably, the transmission oil proportional control valve 101, the hydraulic oil proportional control valve 201, the coolant proportional control valve 301, the air-to-air intercooling proportional control valve 401 and the refrigerant proportional control valve 501 are all electromagnetic proportional control valves.
Preferably, the heat dissipation system further includes a fan 6 for dissipating heat from the heat sink, a motor 602 of the fan 6 is connected to a controller 7, the controller 7 is connected to a fan reverse rotation switch 8, the controller 7 is connected to a rotation speed electromagnetic valve 6011 and a reverse direction electromagnetic valve 6012 of the motor, and the controller 7 controls the rotation speed and the rotation direction of the fan 6, wherein the fan rotates forward to dissipate heat from the heat sink, and rotates backward to remove dust and blockages on the heat sink fins of the heat sink. The controller 7 controls the forward rotation speed of the fan 6 according to the analysis of the received temperatures transmitted by the transmission oil temperature sensor 102, the hydraulic oil temperature sensor 202, the coolant temperature sensor 302, the air-to-air cooling temperature sensor 402 and the refrigerant temperature sensor 502; when dust and blockage on the radiating fins of the radiator need to be cleaned, the controller 7 controls the motor of the fan 6 to rotate reversely, so that the fan rotates reversely, and the dust and the blockage are cleaned.
The reverse rotation control of the fan has 3 modes:
(1) when the whole vehicle is electrified, the vehicle automatically rotates reversely, namely after a key switch of the whole vehicle is electrified, the controller 7 receives a starting signal of an engine on the loader, further controls the fan 6 to realize a reverse rotation function, and automatically restores to rotate forwards after the vehicle rotates reversely for 1 minute.
(2) The fan is automatically reversely rotated after running for a period of time, the controller 7 judges whether the fan needs to reversely rotate for ash removal according to the length of the running time, when the running time is reached, the controller 7 controls the fan 6 to realize the reverse rotation function, and after the fan runs for 1 minute in the reverse rotation mode, the forward rotation is automatically recovered.
(3) And (3) forcibly rotating reversely, wherein after receiving an input signal of a fan reverse rotation switch 8, the controller 7 controls the fan 6 to realize a reverse rotation function, and automatically restores to rotate forwards after rotating reversely for 1 minute.
Preferably, the fan 6 is a suction fan.
Preferably, the controller 7 is connected to the fan reverse rotation switch 8, and when the fan reverse rotation switch 8 is pressed, the controller 7 receives a fan reverse rotation signal, so as to control the motor of the fan 6 to rotate reversely, thereby realizing the reverse rotation of the fan.
The working principle of heat dissipation by using a fan is as follows:
the controller collects the temperature of liquid or gas at each radiator, and when the temperature of the outlet end of one radiator is higher than a set value, the controller controls the proportional control valve of the corresponding radiator to increase the flow of the heat dissipation oil in the corresponding radiator and improve the heat dissipation efficiency; when the temperature of the outlet end of one radiator is smaller than a set value, the controller controls the proportional control valve of the corresponding radiator, the flow of the heat dissipation oil in the corresponding radiator is reduced, and the heat dissipation efficiency is reduced.
If the flow of the proportional control valve is increased and the opening of the proportional solenoid valve is maximized, after the proportional solenoid valve is operated for a period of time, the temperature of the outlet end of the radiator is still higher than a set value after the outlet end of the radiator is mixed, the controller controls the fan to increase the rotating speed, the increase of the rotating speed of the fan can cause the heat dissipation capacity of the radiator with normal temperature at the outlet end to be larger than the required capacity, and therefore the flow of the proportional control valve at the corresponding radiator needs to be reduced to offset the influence of the.
If the flow of the proportional control valve is increased and the rotating speed of the fan is increased, the temperature of the hot agent at the hot agent outlet end of the radiator can not meet the requirement, the controller sends a signal to alarm equipment such as an instrument and the like, and the alarm is realized.
If the outlet temperature of the radiator is still smaller than the set value after the flow of the proportional control valve is reduced for a period of time, the controller controls the fan to slow down the rotating speed, and the increase of the rotating speed of the fan causes that the heat dissipation capacity of the radiator with normal outlet temperature is smaller than the required capacity, so that the flow of the proportional control valve at the corresponding radiator needs to be increased to offset the influence of the rotating speed of the fan which is slowed down.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the present invention, and those skilled in the art should understand that, based on the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without inventive labor are still within the scope of the present invention.
Claims (10)
1. A heat dissipation system of a loader comprises a transmission oil radiator, a hydraulic oil radiator, a cooling liquid radiator, an air-to-air intercooling radiator, an air-conditioning condenser and a fan for blowing and heat dissipation,
the pipelines at the heat agent inlet ends of the transmission oil radiator, the hydraulic oil radiator, the cooling liquid radiator, the air-to-air intercooling radiator and the air-conditioning condenser are respectively provided with a proportional control valve;
the pipelines at the outlet ends of the transmission oil radiator, the hydraulic oil radiator, the cooling liquid radiator, the air-to-air intercooling radiator and the air-conditioning condenser are respectively provided with a temperature sensor after mixing;
the proportional control valve and the temperature sensor are respectively in signal connection with the controller, and the controller can control the flow of the proportional control valve.
2. The heat dissipating system for a loader of claim 1, wherein said temperature sensors are all thermistor type sensors.
3. The heat removal system for a loader of claim 1, wherein the proportional control valves are all electromagnetic proportional control valves.
4. The heat dissipating system for a loader of claim 1 wherein the motor of said fan is connected to a controller, said controller capable of controlling the speed and reverse rotation of the fan.
5. The heat removal system for a loader of claim 4, wherein the controller is connected to a fan reversing switch.
6. The heat removal system for a loader of claim 1, wherein the outlet end of the transmission oil heat sink is in communication with a transmission oil tank.
7. The heat dissipating system of a loader of claim 1 wherein the outlet end of the hydraulic oil radiator is in communication with a hydraulic oil tank.
8. The loader cooling system of claim 1 wherein the outlet end of the air-to-air intercooler radiator is in communication with an air-to-air intercooler tank.
9. The heat removal system for a loader of claim 1, wherein the outlet end of the coolant heat sink is in communication with a coolant water tank.
10. The heat removal system for a loader of claim 1 wherein the outlet end of the air conditioning condenser is in communication with a liquid reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020721127.3U CN212078081U (en) | 2020-04-30 | 2020-04-30 | Loader cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020721127.3U CN212078081U (en) | 2020-04-30 | 2020-04-30 | Loader cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212078081U true CN212078081U (en) | 2020-12-04 |
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ID=73588382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020721127.3U Active CN212078081U (en) | 2020-04-30 | 2020-04-30 | Loader cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212078081U (en) |
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2020
- 2020-04-30 CN CN202020721127.3U patent/CN212078081U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.75, Huanghe East Road, Huangdao District, Qingdao City, Shandong Province 266599 Patentee after: Lovol Heavy Industry Group Co.,Ltd. Address before: No.75, Huanghe East Road, Huangdao District, Qingdao City, Shandong Province 266599 Patentee before: LOVOL Engineering Machinery Group Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |