Split heat dissipation system

Abstract

The utility model discloses a kind of split type heat dissipation systems, it belongs to engineering machinery radiator field, its split radiator can make whole machine operation low load, oil long time is at lower temperature, the transmission efficiency of whole machine oil is low, leading to high oil consumption;Whole machine high load, shorten oil reaches best operation range time, improve the efficiency of whole machine, reduce whole machine oil consumption.It mainly includes radiator A and radiator B, the radiator A includes transmission oil A and hydraulic oil A, radiator B includes transmission oil B and hydraulic oil B, transmission oil A is connected with transmission oil B by electromagnetic valve A, hydraulic oil A is connected with hydraulic oil B by electromagnetic valve B.The utility model is mainly used for loading machine heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of radiators for engineering machinery, and more specifically, to a split-type heat dissipation system. Background Technology

[0002] Traditional loader radiators consist of multiple layered cores stacked together, with a fan at the rear. The engine drives the fan, which dissipates excess heat through blowing or suction when the loader's temperature is high. However, this structure has a drawback: regardless of the temperature of the transmission oil and hydraulic oil, the flow rate into the radiator remains constant, and the cooling capacity is also fixed, lacking a thermostat-like component to regulate the flow. However, loaders operate in complex environments, experiencing both high-load conditions with long working hours, high ambient temperatures, and heavy materials, and low-load conditions with low working efficiency, low ambient temperatures, and light materials. For the transmission oil and hydraulic oil, a constant cooling capacity is clearly unsuitable.

[0003] Hydraulic transmission in loaders uses hydraulic oil as the working medium to transmit power through hydraulic energy. It offers advantages such as light weight, small size, and high transmission efficiency. The operating temperature of the hydraulic oil is a crucial factor affecting the efficiency of hydraulic transmission. The optimal operating temperature is approximately 60-80℃; temperatures below 60℃ and above 80℃ both negatively impact the overall machine efficiency. Transmission oil is primarily used in the hydraulic transmission systems of mechanical equipment, serving to transmit energy, lubricate, and cool. Its optimal operating temperature range is approximately 80-90℃; temperatures below 80℃ and above 90℃ both negatively affect the overall machine's transmission efficiency.

[0004] Some large-tonnage loaders may choose independent fans, directly driven by motors. When the coolant temperature, transmission oil temperature, or hydraulic oil temperature is too low, the fan speed is extremely low or even stops to reduce heat dissipation. When the temperature is high, the fan speed is increased to increase heat dissipation. However, this structure requires an independent motor and requires programmed motor control, which is logically complex and not economical. Therefore, it is generally only suitable for large or high-end loaders.

[0005] In existing technology, for the radiator assembled in the whole machine, the radiator core size is constant, and when the maximum operating efficiency is met, the hydraulic oil temperature and transmission oil temperature do not exceed the design limits. When the whole machine starts to operate or operates at low efficiency, and the ambient temperature is low, the heat dissipation capacity is large due to the fan speed changing proportionally with the engine, and the temperature rises slowly. The best operating temperature of the whole machine rises slowly. When operating at low efficiency, the temperature is low, which is not conducive to the transmission of the whole machine efficiency. When operating at the highest efficiency, the temperature changes significantly with the operating efficiency and the ambient temperature. Utility Model Content

[0006] The purpose of this utility model is to provide a split-type heat dissipation system. The split-type heat sink can keep the oil at a low temperature for a long time when the whole machine is operating under low load, which results in low oil transmission efficiency and high oil consumption. When the whole machine is under high load, it can shorten the time for the oil to reach the optimal operating range, improve the efficiency of the whole machine, and reduce the oil consumption of the whole machine.

[0007] This utility model is achieved through the following technical solution:

[0008] A split-type heat dissipation system includes radiator A and radiator B. Radiator A includes a transmission oil radiator A and a hydraulic oil radiator A, and radiator B includes a transmission oil radiator B and a hydraulic oil radiator B. Transmission oil radiator A and transmission oil radiator B are connected by a solenoid valve A, and hydraulic oil radiator A and hydraulic oil radiator B are connected by a solenoid valve B.

[0009] Furthermore, it also includes a hydraulic oil temperature sensor and a transmission oil temperature sensor. The hydraulic oil temperature sensor is located in the hydraulic oil tank, and the transmission oil sensor is located in the oil pan to monitor the internal oil temperature.

[0010] Furthermore, both solenoid valve A and solenoid valve B are two-position three-way solenoid valves. When the two-position three-way solenoid valve is in the left position, the oil flowing through radiator A flows out of the radiator through the two-position three-way solenoid valve; when the two-position three-way solenoid valve is in the right position, radiator A and radiator B are connected in parallel for heat dissipation.

[0011] Furthermore, radiator A and radiator B are installed together, and fans are located at the rear of radiator A and radiator B.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. A split-type radiator can keep the oil at a low temperature for a long time when the machine is operating under low load, resulting in low oil transmission efficiency and high oil consumption. When the machine is under high load, it can shorten the time for the oil to reach the optimal operating range, improve the efficiency of the machine and reduce the oil consumption.

[0014] 2. Compared to radiators with motor-controlled fans, this structure is low in cost, simple in design, and has a wide range of applications, suitable for any complete machine from high-end to low-end.

[0015] 3. When the machine is cooling the hydraulic oil, the temperature of the hydraulic oil in the hydraulic oil tank is collected; when the machine is cooling the transmission oil, the temperature of the gearbox oil pan is collected; instead of collecting the oil temperature on the internal return oil line, this can avoid temperature instability caused by insufficient return oil when the boom is raised and excessive return oil when it is lowered, and the temperature monitoring is more accurate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structural principle of this utility model. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] like Figure 1 As shown in Embodiment 1, a split-type heat dissipation system includes a radiator A and a radiator B. The radiator A includes a transmission oil radiator A and a hydraulic oil radiator A, and the radiator B includes a transmission oil radiator B and a hydraulic oil radiator B. The transmission oil radiator A and the transmission oil radiator B are connected by a solenoid valve A, and the hydraulic oil radiator A and the hydraulic oil radiator B are connected by a solenoid valve B.

[0019] Example 2: A split-type heat dissipation system further includes a hydraulic oil temperature sensor and a transmission oil temperature sensor. The hydraulic oil temperature sensor is located in the hydraulic oil tank, and the transmission oil sensor is located in the oil pan to monitor the internal oil temperature. Both solenoid valves A and B are two-position three-way solenoid valves. When the two-position three-way solenoid valves are in the left position, the oil flowing through radiator A flows out of the radiator through the two-position three-way solenoid valves. When the two-position three-way solenoid valves are in the right position, radiators A and B are connected in parallel for heat dissipation. Radiators A and B are integrated and installed together. A fan is located behind radiators A and B. The rest is the same as in Example 1.

[0020] When the oil source flows to the radiator, if the equipment is operating at low load, the oil source enters radiator A directly through the pipeline. Due to the small size of the radiator core, the equipment quickly reaches its optimal temperature range, and the oil no longer enters radiator B. When the equipment is operating at high load, the oil source first enters radiator A through the pipeline. Due to the high load and the smaller capacity of the radiator, the equipment quickly reaches its optimal temperature range. When the temperature rises, the temperature sensor detects a high temperature, at which point solenoid valves A and B turn to the right position, and the oil then enters radiator B, increasing the heat dissipation area and allowing the temperature to decrease, maintaining it within the optimal temperature range. When the entire machine cools the hydraulic oil, the temperature of the hydraulic oil in the hydraulic oil tank is collected; when the entire machine cools the transmission oil, the temperature of the gearbox oil pan is collected. Instead of collecting the oil temperature from the internal return oil line, this avoids temperature instability caused by insufficient return oil during boom lifting and excessive return oil during boom lowering, resulting in more accurate temperature monitoring.

[0021] This invention can also be used to connect several other radiators using the above method to increase the heat dissipation effect. The principle is the same as described above, and will not be repeated here.

Claims

1. A split-type heat dissipation system, characterized in that: The device includes radiator A and radiator B. Radiator A includes transmission oil radiator A and hydraulic oil radiator A. Radiator B includes transmission oil radiator B and hydraulic oil radiator B. Transmission oil radiator A and transmission oil radiator B are connected by solenoid valve A, and hydraulic oil radiator A and hydraulic oil radiator B are connected by solenoid valve B.

2. The split-type heat dissipation system according to claim 1, characterized in that: It also includes a hydraulic oil temperature sensor and a transmission oil temperature sensor. The hydraulic oil temperature sensor is located in the hydraulic oil tank, and the transmission oil sensor is located in the oil pan.

3. The split-type heat dissipation system according to claim 1, characterized in that: Both solenoid valve A and solenoid valve B are two-position three-way solenoid valves. When the two-position three-way solenoid valve is in the left position, the oil flowing through radiator A flows out of the radiator through the two-position three-way solenoid valve; when the two-position three-way solenoid valve is in the right position, radiator A and radiator B are connected in parallel for heat dissipation.

4. The split-type heat dissipation system according to claim 1, characterized in that: Heatsink A and heatsink B are installed together, and fans are located at the rear of both heatsink A and heatsink B.

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