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Frequently asked questions about miniature submersible pumps for cooling fans
1. Startup and operation problems
1. The submersible pump is difficult to start:
Possible reasons: insufficient inflation, power failure, equipment aging, motor failure, etc.
Solution:
Check whether the air pressure regulating valve, pressure gauge and air source are normal.
Check whether the power supply, cable and switch are stable. If there is any problem, repair or replace them in time.
Check whether the equipment is aging, such as inlet pipe blockage, bearing wear, etc., and replace damaged parts in time.
Check whether the motor circuit is open or the winding is short-circuited, and replace the motor if necessary.
2. The submersible pump stops suddenly during operation:
Possible reasons: power supply problem, overload, rotor stuck, etc.
Solution:
Check whether the power supply is stable and whether the power meets the requirements.
Check whether there is overload, such as too much garbage in the water or too deep diving depth.
Check whether the rotor is stuck, you can try to clean or disassemble it for inspection.
2. Performance and efficiency issues
1. The lift does not meet expectations:
Possible reasons: incorrect wiring, poor performance of the dc submersible pump.
Solution:
Check and adjust the wiring to ensure that it is correct.
If there is a problem with the performance of the mini submersible pump, consider replacing a submersible pump with higher performance.
2. Weak water output or low flow rate:
Possible reasons: The rotor is weak in rotation and the output power is low.
Solution:
Check whether the rotor and the bearing are loose or moved down, and adjust the position appropriately.
If the rotor is damaged or the bearing is severely worn, replace new parts.
Submersible pump drawing
3. Safety issues
Overheating issues:
Possible causes: long-term operation, overload, etc.
Solutions:
Ensure that the electric submersible pump operates under appropriate loads and avoid overload.
If long-term operation is required, consider adding heat dissipation measures or using a higher-performance submersible pump.
Technical Specification
| Model | DQB421-SB-7 | Voltage | DC12V |
| Current |
290mA |
Flow | 120-150L/H |
| Noise |
38dB |
Lifespan | 10000 hours |
| Application |
Fish tank,car refrigerator,car hair dryer,humidifier,purifier |
Continuous work |
Yes |
How to evaluate the effect of micro submersible pumps in cooling fan applications?
1.Cooling effect:
Use a thermometer to measure the indoor temperature change before and after the cooling fan is running. According to the test data in reference article 4, after the cooling fan has been running for 30 minutes, the indoor temperature can drop from the initial 25 degrees Celsius to 20 degrees Celsius, which shows that the cooling effect of the cooling fan is obvious. The role of the micro submersible pump is to provide a cold source for the cooling fan by extracting low-temperature water sources such as cold water or well water, thereby enhancing its cooling effect.
The working time and flow rate of the small submersible pump can be further adjusted to observe the changes in indoor temperature to evaluate the quality of its cooling effect.
2. Noise level:
During the operation of the cooling fan, use a noise measuring instrument to record its noise level. Reference article 4 mentioned that the noise level of the cooling fan gradually decreases during the cooling process, which shows that it runs smoothly and relatively quietly. As part of the cooling fan, the noise level of the micro submersible pump should also be included in the evaluation range.
The noise level not only affects the user experience, but may also interfere with the indoor environment. Therefore, it is necessary to ensure that the noise of the micro submersible pump is controlled within an acceptable range.
3. Safety:
Check whether the micro submersible pump has a water shortage protection function. This function can automatically stop the machine when there is insufficient water in the water tank to prevent mechanical damage or dangerous situations caused by lack of water. This is particularly important for ensuring the safe operation of the cooling fan.
Evaluate the electrical safety performance of the micro submersible pump, such as insulation performance, waterproof performance, etc., to ensure that it will not cause electrical safety hazards during use.
4. Energy efficiency ratio:
Calculate the energy efficiency ratio of the micro submersible pump (i.e. the ratio of cooling capacity to power consumption) to evaluate its energy efficiency level in cooling fan applications. The higher the energy efficiency ratio, the less power the micro submersible pump consumes when providing the same cooling capacity, and the lower the operating cost.
DYX Mini Pumps And Solenoid Valves Application
How to optimize the energy efficiency ratio of micro submersible pumps in cooling fan applications?
1. Reasonably set the water pump operating parameters: According to the actual needs of the cooling fan, reasonably set the flow, head and speed parameters of the mini submersible water pump. Avoid setting too high flow and head to reduce energy consumption.
2. Optimize the pipes and valves of the water pump system: In the water system of the cooling fan, pay attention to reducing the resistance loss of the pipes and valves. Use the appropriate pipe diameter and valve type to ensure smooth water flow and reduce energy consumption.
3. Improve the efficiency of water pumps and motors: Use efficient motors to drive submersible pumps to improve the efficiency of converting electrical energy into mechanical energy.
4 Control the coolant flow: Avoid excessive coolant flow to avoid exceeding the normal working range of the submersible pump and increasing energy consumption.
According to the indoor temperature changes and the requirements of the cooling effect, adjust the coolant flow to achieve energy saving.
5. Intelligent control: Introduce an intelligent control system to automatically adjust the operating status of the submersible pump according to parameters such as indoor temperature and humidity.
Use frequency conversion technology to adjust the speed and power of the miniature submersible pump according to actual needs to achieve energy-saving operation.
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