Inexpensive Automatic Door Closer: Article On Automatic Door Closer
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There are about three types of automatic doorway closer readily available within the market nowadays. Depending on the weight from the door and how you intend use it there is a perfect type of door closer for you to choose from. Probably the most common kind may be the spring loaded doorway closer or hinge pin door closer which are effective for light applications.
Ideal for light weight doors like patio doors that is often made of lightweight aluminum body with mesh screen overlaying almost half of it. This door closer is commonly created of aluminum tubing or cylinder with only the push rod exposed while the spring is covered inside. The concept employed is very simple, a spring system pulls the door with a small tension and when you open it further tension from the string is developed which force the door to close when released. The frequent issue with spring loaded door closer is that the push rod can be very easily twisted if not installed properly or if you open the door excessively. Also the piston rod bearing or bushing at the front end which absorbed the linear load wears in the long run.
One more kind of door closer is the air-driven door closer. They are really similar to their spring loaded cousins with regard to load capability and overall look. It also utilizes the exact same aluminum tube frame and has a piston rod. The primary improvement is that it uses pressurized air instead of springs that is generated whenever you open the door compressing the air within then pulls and close the door when you release it. Also the internal structure is slightly different.
In the spring loaded door closer there is no rubber seal on the piston or it isn't air tight while in pneumatic door closer, a rubber seal is installed to avoid the air from escaping. Without the rubber seal to hold the air pressure or when it is broken will cause the product useless. Additionally the internal surface of the aluminum cylinder is mirror polished for smooth operation and to increase the life of the rubber seal and the unit itself. Due to the fact the air is compressible this kind of door closer has the tendency of slamming the door if not correctly regulated.
The last kind of automatic door closer is the hydraulic oil filled door closer. This form may be the most reliable and toughest among the three. It also has a very different construction and mounting structure compared to the other. While the spring loaded and pneumatic door closer is placed at the side from the door, around the hinge, the hydraulic type is applied at the upper part from the door. It's perfect to use in heavy weight doors and is commonly used in front doors or main doors. The closing speed is adjustable using the turn of the screw. Using the mounting template (to mark holes for drilling) and installation instruction bundled within the package making it quite simple to set up (drill needed) and does not require a specialist to do them. Unlike pneumatic air, hydraulic fluid is not compressible, so, it is feasible to adjust the closing from the door at a very low speed and smoothly.
There are also some other types of automatic door closer including the motorized automatic door closer. Actually it's not only for closing but for opening too that is very comfortable for hands free of charge, disabled and handicap access. This system uses a 24 VDC motor to work and controlled by a microprocessor which enables you to open and close the door both by hand and automatically. The encoder which is coupled to the DC motor detects the angle from the doorway at all times, this means the encoder can identify if the door is open and how much and responds consequently. Compared to non electric doorway closer it is pricier and cost about 1.5k USD and most likely difficult to maintain because of too many moving parts and certainly needed a professional technician to mount.
Article Source: Articlelogy.com
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