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12-07

The application of SanAce cooling fan in medical equipment - reducing noise and troubleshooting

The application of SanAce cooling fan in medical equipment - reducing noise and troubleshooting SanAce cooling fans are widely used nowadays, and various production equipment cannot do without their cooling function. Below, I will briefly summarize some applications of cooling fans in the field of medical devices, using relevant knowledge. The issue of noise in the use of cooling fans is a clich é d issue. If excessive noise is found in the cooling fan during use, check the bolts to see if they are loose. Also, check if the impeller of the cooling fan is loose. Many times, the noise of the cooling fan is closely related to the blades, so once the cooling fan produces noise, many users will think of checking the impeller part of the cooling fan first. Cooling fans and fans are used in medical devices, including high-frequency electrocautery, biochemical instruments, immune instruments, blood coagulation, and blood analysis instruments. Another issue is that the motor of the heat dissipation fan does not rotate. If such a phenomenon occurs in medical centrifugal fans, the power must be cut off first before inspection. If the inspection is carried out with electricity, it may threaten the safety of maintenance personnel and pose a great safety hazard. In fact, in many faults of the heat dissipation fan, as long as the power supply is involved, it is necessary to cut off the power to ensure safety. Vibration of the bearings of the cooling fan is a common fault during operation. Vibration of the cooling fan can cause damage to the bearings and blades, loosening of bolts, damage to the casing and air ducts, and seriously endanger the safe operation of the fan. There are many reasons for the excessive vibration of the bearings of the cooling fan. If appropriate measures can be taken to analyze the causes of different phenomena, it can often achieve twice the result with half the effort. Although the faults are all interconnected, the solutions to some faults are not entirely the same. Users must base their fan on the actual situation and conduct scientific inspections and maintenance. Only then can the cooling fan be used more safely. Capital Technology Co., Limited is the chief agent of SANYO DENKI, one of the leading enterprises of the cooling fan industry. We are a factory who also have our own independent brand CAPITAL product series. The main products are cooling fan, DC/AC fan, radiator, filter, reactor etc. We can provide customer with the most professional and perfect technical support, welcome to contact me at anytime at rainlee@szcpt.com.
The application of SanAce cooling fan in medical equipment - reducing noise and troubleshooting
11-27

SanAce waterproof fan protection and waterproof level

SanAce waterproof fan protection and waterproof level Many cooling fans have waterproof functions, and the waterproof level of waterproof fans is different. The waterproof level of electronic measuring instruments reflects the ability of waterproof and moisture-proof fans, especially when it comes to outdoor activities. In harsh environments with high humidity or dust, the sealing and waterproofing of waterproof fans are crucial to ensure the safe operation and lifespan of the instruments. To this end, the international IEC529 standard has been established. In order to comply with this, the Japanese process specification divides the maintenance of electronic instruments into 10 levels, namely IPX1, IPX2 Represent. Below is an explanation of the protection and waterproof level of the Shanyang waterproof cooling fan. SanAce cooling fan SanAce Fan Protection Level Definition: 0 No protection, no special protection 1. Avoid intrusion of objects larger than 50mm to prevent human body from accidentally touching the internal parts of the lighting fixture. Avoid intrusion of objects with a diameter greater than 50mm 2. Avoid objects larger than 12mm from invading and prevent fingers from touching the internal parts of the lamp 3. Avoid full intrusion of objects larger than 2.5mm, and avoid intrusion of tools, wires, or objects with a diameter greater than 2.5mm 4. Avoid objects larger than 1.0mm from invading. Avoid mosquitoes, flies, insects, or objects with a diameter greater than 1.0 from invading 5. Dust prevention cannot completely prevent dust intrusion, but the amount of dust intrusion will not affect the normal operation of the lamp 6. Complete dust prevention to prevent dust intrusion SanAce fan waterproof grade number, protection level definition: 0 No protection, no special protection 1. Avoid water droplets from entering and dropping vertically When the lamp is tilted 15 degrees, it can still avoid dripping water 3. Avoid the intrusion of radioactive water to prevent rainwater or water radiating from the direction with a vertical angle of less than 50 degrees 4. Avoid splashing water intrusion and prevent splashing water from all directions from entering 5. Avoid water intrusion from large waves or rapid spray from spray holes 6. Avoid the intrusion of water from large waves into the lighting fixtures. Under certain conditions of time or water pressure, the normal operation of the lighting fixtures can still be ensured. 7. Avoid water intrusion into the lighting fixtures to prevent them from floating indefinitely under certain water pressure conditions, ensuring the normal operation of the lighting fixtures 8. Avoid floating SanAce fan SanAce waterproof cooling fan has reliable waterproofing and can be installed outdoors, even in rainy weather conditions where axial flow fans come into contact with water. Its reliable waterproofing ensures that the cooling fan will not be damaged when working outdoors, reducing the number of fan replacements and thus reducing costs. Capital Technology Co., Limited is the chief agent of SANYO DENKI, one of the leading enterprises of the cooling fan industry. We are a factory who also have our own independent brand CAPITAL product series. The main products are cooling fan, DC/AC fan, radiator, filter, reactor etc. We can provide customer with the most professional and perfect technical support, welcome to contact me at anytime at rainlee@szcpt.com.
SanAce waterproof fan protection and waterproof level
11-20

Differences in Four Types of Heat Dissipation Fan Adhesive Waterproofing IP68 Waterproofing Processes

Differences in Four Types of Heat Dissipation Fan Adhesive Waterproofing IP68 Waterproofing Processes In the use of heat dissipation fans, vacuum coating and glue injection processes are usually used for waterproofing treatment of the motor parts. The glue injection process can achieve a waterproof level of up to ip68. The waterproof glue injection process can be divided into motor frame with AB glue injection, separate direct use of mold cup with AB glue injection, BMC process with glue injection, and fully automatic low-pressure vacuum injection 1、 Process Description of Heat Dissipation Fan with Frame Gluing 1. Due to the limitations of the molding process, the copper tube is wrapped on a rubber shell, which is difficult to implement on models with a thickness of 8 centimeters. The structural strength of the coated copper tube is relatively low. 2. This glue filling process uses glue at room temperature, and the glue used by each motor manufacturer has different prices and significant differences. This type of adhesive is epoxy resin type, with poor thermal conductivity and high adhesive stress during curing. 3. The disadvantage of the frame gluing process is that the motor of the fan has a shorter lifespan. It is difficult to improve efficiency, the fan speed is limited, and the fan motor temperature increases, making it difficult to remove heat, which can only be conducted through copper pipes. 4. Shortcomings in the glue filling process: This glue filling process makes it difficult to remove air from the glue, resulting in bubbles in the motor inside the glue filling shell, insufficient glue filling in the motor, and a lack of glue. 2、 Explanation of the Glue Filling Process for the Separate Mold Cup of the Cooling Fan 1. After mixing AB glue, pour it into a rubber cup with a motor. The principle of this type of glue pouring is the same as that of frame glue pouring. When pouring glue, the glue should be vacuumed in advance and mixed evenly. If the air is not completely pumped or mixed thoroughly, the motor after pouring glue is prone to bubbles, and poor fluidity of the glue can also cause insufficient glue pouring and not covering the motor, resulting in defects. 2. The AB adhesive material used for this type of sealant has high stress and structural strength after solidification, and is prone to cracking when encountering high and low temperatures. 3. The thermal conductivity of glue is not good, and the temperature rise of the motor after glue injection is more than 10 degrees higher than before, which shortens the service life of the fan 4. Advantages of individual gluing: low gluing cost and fast efficiency 3、 Heat dissipation fan BMC process description 1. BMC injection molding process: It involves using an injection molding machine to inject BMC material into the motor through high-temperature injection molding. 2. Temperature requirements. During processing, BMC is required to maintain low viscosity flow dynamics for a long time at the barrel temperature. The temperature of the material barrel is generally divided into two or three stages for control, with a lower temperature near the hopper end and a higher temperature near the nozzle end. Generally, the difference is 20-60 ℃, and the mold temperature is generally controlled to operate at 135-185 ℃. 3. Injection pressure. Due to the poor fluidity, fast solidification, and complex mold structure of BMC, it is advisable to choose a higher injection pressure, usually between 80 and 160MPa. The finished product produced by packaging has high internal stress and strength in BMC material, and the PCB board may experience warping and cracking. 4. BMC materials are difficult to store and require a low-temperature environment. Poor control can lead to failure, deterioration, and solidification. Disadvantages of BMC process 1. The motor components contain PCBA, and the temperature resistance of the chip capacitors and resistors on PCBA is generally at 105 ℃ because the BMC process is formed at 135 ℃ or above, which poses a risk of damage to the components and makes it difficult to ensure the reliability of the fan during long-term operation. 2. For high current fans, electrolytic capacitors are generally required. The BMC process, which is formed at high temperatures and pressures, has a significant impact on the capacitors, causing electrolyte loss. The capacitor drum seriously shortens the lifespan of the fan operation. 3. The enameled wire of the coil motor is temperature resistant to 135-155 degrees Celsius. Under the BMC process, the polyester protective layer on the surface of the motor wire is damaged, and there is a risk of inter turn short circuit or even high current burning of the equipment during prolonged operation of the fan. 4. The BMC process requires high temperature resistance of the leads, and the parting line of the mold design is located at the lead, so the outlet is prone to water seepage and cause poor fan pe
Differences in Four Types of Heat Dissipation Fan Adhesive Waterproofing IP68 Waterproofing Processes
11-17

Knowledge of System Impedance of Industrial Cooling Fans

Knowledge of System Impedance of Industrial Cooling Fans The system impedance of a cooling fan refers to the overall resistance or obstruction encountered by the fan during operation, such as various resistances from the fan itself, radiator, air flow, pipelines, etc., which can be described as system impedance. The impedance of this system can affect the performance and efficiency of the fan. If the impedance of the system is reduced, the fan can more easily push the air and the air volume will also be greater; On the contrary, if the system impedance increases, the fan will have to overcome greater resistance, which may lead to reduced air volume, increased noise, and decreased fan efficiency. If you want to calculate or evaluate the impedance of a fan system, you need to consider factors such as the operating point of the fan, the geometric shape of the air duct, fluid dynamics characteristics, and the surrounding environment. This usually requires complex fluid dynamics and thermal flow analysis, as well as the use of tools such as computational fluid dynamics (CFD) to simulate and predict the behavior of the system. The system impedance is usually represented in the form of an impedance curve, which is the relationship between the pressure (or electrical energy) required by the fan and the airflow rate under different air flow rates. This impedance curve can help engineers select suitable fans to meet specific evaporation needs, and balance factors such as gas flow, evaporation, and noise during the design process. In practical applications, when designing a heat dissipation system, these factors must be comprehensively considered to ensure that the fan can effectively remove heat while maintaining a suitable working state. The lower the system impedance, the lower the power required by the fan, and the higher the efficiency. Capital Technology Co., Limited is the chief agent of SANYO DENKI, one of the leading enterprises of the cooling fan industry. We are a factory who also have our own independent brand CAPITAL product series. The main products are cooling fan, DC/AC fan, radiator, filter, reactor etc. We can provide customer with the most professional and perfect technical support, welcome to contact me at anytime at rainlee@szcpt.com.
Knowledge of System Impedance of Industrial Cooling Fans
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