What is the machine room-less elevator?

Generally speaking, the elevator will have a special elevator room space, which will place the control cabinet, traction machine, speed limiting cabinet, etc., without the machine room, this space is omitted, which greatly reduces the required area of the elevator, and relatively can also save the construction cost.  
 
So what are the advantages and disadvantages of the machine room-less elevator?  

 
The advantages are: Save Space.  Some buildings are not convenient for the machine room, so the machine room-less elevator is the best solution.  
Comparatively speaking, the disadvantages of machine room-less elevator are noise, vibration and limitations.
There are two popular kinds of host placement without machine room:  Is a host on its top, 2 it is through the guide wheel connecting shaft, in that way, their noise is very big, because of the rigid connection, and drilling to digest within the shaft, combined with the brake of the sound and the noise of the fan will get bigger, so the noise which on the other hand, machine room-less  is bigger than it machine room. 
1. Temperature Impact  
(1) the calorific value of the lift is compared commonly big, and a variety of electronic components of the elevator can withstand high temperature ability is bad, without machine room elevators are generally use gearless permanent magnet synchronous machine running, the permanent magnet is commonly synchronization in the temperature of the motor, and doesn’t suit is too high, otherwise easy to cause the phenomenon of “loss”.  
(2) The main heating parts of the machine room-less elevator are generally installed in the well, so there is generally no corresponding cooling facilities and exhaust facilities, so it is easy to lead to the phenomenon of high temperature of the machine room elevator, and high temperature will inevitably affect the host and control cabinet of the machine room elevator.  
2. Failure maintenance and personnel rescue  
Machine room-less elevator maintenance and management is not as convenient as machine room elevator.  It is difficult to maintain and debug the machinery-less elevator, because no matter how good the elevator is, it will inevitably break down. However, the machinery-less elevator is installed on the beam and in the well, so it will be very troublesome if the main engine (motor) has problems.  In addition, in terms of personnel rescue, the machine room-less elevator is also very troublesome.  Once a power failure occurs, emergency power supply must be installed, the general elevator emergency power supply needs to invest more money.  Machine room elevator maintenance and management is not as convenient as machine room elevator.  It is difficult to maintain and debug the machinery-less elevator, because no matter how good the elevator is, it will inevitably break down. However, the machine-less elevator is installed on the beam and in the well, so it will be very troublesome if the main engine (motor) has problems.  

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