Festo Air Cylinder DNCB-32-440-PPV-A
Type: Air Cylinder
Brand: Festo
Type: Air Cylinder
Brand: Festo
Type: Air Cylinder
Brand: Festo
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Precautions for installation and use of compressor-type car refrigerator A car refrigerator is a refrigerator that can be carried on a car. Car refrigerator is a new generation of cold storage appliances popular in the international market. Compressor car refrigerators are similar to household refrigerators. They are all cooled by compressor power. The refrigeration is fast and powerful. The refrigeration can reach -18 ℃. It can make ice and keep fresh
06/14/2020
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The gear reducer is an independent enclosed transmission gear between the prime mover and the machine, which is used to reduce the speed and increase the torque to meet the work needs.
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What's the matter with air conditioning and cooling without heating 1.First, it may be because the vents of the indoor unit and outdoor unit are blocked by something, or a lot of dust has accumulated on the filter inside the air conditioner; 2. It may be because the heat blown from the air conditioner is seriously lost; 3 2. It may be because the amount of refrigerant in the air conditioner is too small, which leads to a great reduction in the heat exchange efficiency, so that the air conditioner does not heat. <img src="{{media url="magefan_blog/What_s_the_matter_with_air_conditioning_and_cooling_without_heating3.jpg"}}" alt="" />
06/14/2020
Refrigerator industry ushered in major changes, compressor refrigeration or history
06/20/2020
What are the causes of air conditioning trip 1. The contradiction between the rated current of the air conditioner and the current carrying capacity of the wire. Here are two formulas involved: ①The rated current of air conditioner I=P÷U ÷power factor, the power remains unchanged, the smaller the voltage, the greater the current required. ② The current carrying capacity of the wire I=U÷R, the voltage is proportional to the current. So when the power supply voltage is normal, we must consider the line voltage drop. The longer the line, the greater the resistance, the greater the voltage drop, and the smaller the output current at the end. However, because the power of the load remains unchanged, the voltage becomes smaller, and the current that needs to be output will be larger. At this time, the wire is forced to overload, and the time will cause heating, and eventually cause the tripping of the open circuit. Some friends said that the heat of the wire will not cause the tripping of the circuit breaker. In fact, the manufacturer of the air switch has made it clear in the relevant manuals that the heat of the wire will cause the air switch to trip. Because the wire heats up, the crimp terminal will also heat up, and the resistance will become larger and larger. The larger the resistance, the greater the current consumption, and the hotter it will be, a vicious cycle. 2. Leakage During the daily maintenance work, we will encounter the situation that the air circuit trips due to the leakage of electricity. At least I have not experienced it once or twice. Regardless of the leakage of the neutral line or the leakage of the live line, a long time will cause the circuit breaker to trip. Why does the electric leakage cause the MCB to trip? There are two situations. ① Good grounding. At the beginning, the leakage current was not large, and as time went by, the leakage current became larger and larger, and eventually evolved into a short circuit to ground, unable to close. ②There is no ground wire. If the equipment is not connected to the protective ground, when the wire leaks to the equipment, it is equivalent to adding a large shunt resistance. Like this problem, if the air conditioner does not have a ground wire, when the wire leaks to the air conditioner, the air conditioner is a very large shunt resistor and will consume a lot of current. Eventually, the wire will heat up or trip open. How to determine whether the trip caused by the above two aspects can be done with a clamp ammeter. ① Measure the voltage at the input and output to see if there is a significant change in voltage drop. ②Measure whether the output current exceeds the standard. So my suggestion is: first measure the supply voltage to see if it is within the allowable fluctuation range. Then measure the current to see if it exceeds the rated ampacity of the wire. Finally, check the data one by one according to the measured data to find out the reason.
06/21/2020
The principle of centrifugal compressor structure Structure principle of centrifugal compressor <img src="{{media url="The_principle_of_centrifugal_compressor_structure.jpg"}}" alt="" /> Centrifugal compressor is composed of rotor, stator and bearing. The impeller and other parts are sleeved on the main shaft to form a rotor. The rotor is supported on the bearing and driven by the power machine to rotate at high speed.
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During the working process of the engine, metal wear debris, dust, carbon deposits and colloidal deposits oxidized at high temperature, water, etc. are constantly mixed into the lubricating oil.
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Air purifiers are a common household appliance in modern life. It can remove various air pollutants and effectively improve air cleanliness.
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The quality factor Q is an important parameter reflecting the quality of the solenoid coil, and improving the Q factor of the coil can be said to be one of the key points of winding the coil.