The bathroom ventilator is one of the essential appliances for every family. It can not only remove the moisture and odor from the bathroom, but also adjust the indoor temperature and humidity. Especially in the cold winter, you can use the ventilator to remove the fog in the bathroom. So what are the types of bathroom ventilation fans? How to choose a roof exhaust fan?
First, what are the types of bathroom ventilation fans
1. Ceiling type ventilation fan: Ceiling type ventilation fan is not only small in appearance, but also a type of ventilation fan with the best exhaust effect. However, this type of ventilation fan is more suitable for bathrooms with large areas, because it is installed on the ceiling of the ventilation fan, and relevant ventilation ducts must be purchased.
2. Wall-mounted ventilator: The volume of ventilator axial fan filters is also very small, it is hung on the wall. Therefore, during the installation process, a hole must first be cut into the wall so that the ventilation fan can be embedded in it. However, its air outlet is in contact with the wall, which will block a certain amount of wind, so this installation method will not make it strong enough for ventilation.
3. Window type ventilation fan: The window type ventilation fan is currently the most common type of ventilation fan. It has two operating modes, one-way and two-way. This operation mode can not only exhaust the odor in the room, but also run the fresh air outside into the room. The window-type ventilating fan has a wide range of use, and the effect is very good. Secondly, its installation method is much simpler.
How to choose a bathroom ventilator
1. First of all, choose a ventilation fan that is unified with the bathroom style. Secondly, in addition to its aesthetics, you must also check its quality. In general, a good-quality ventilator has a fine surface finish, straight seams, and no scratches. In addition, if the shell of the ventilator is metal, special attention should be paid to whether its paint surface is intact and whether there are rust marks.
2. Ventilation fans of different sizes and powers have different exhaust volumes, so we must choose according to our own needs when selecting a ventilator, and you can purchase it according to the manufacturer's instructions.
3. There are many types of ventilation, and there are many sizes. Generally, the ventilation fan in the bathroom is almost the same as the exhaust fan. If it is a bathroom without a window, the size of the opening is 29.5 cm x 29.5 cm, and the size of the frame is 34.5 cm x 34.5 cm. This is the specification of an ordinary ventilator.
Although the bathroom F2E top cabinet ventilator has a great effect, it must be cleaned and maintained frequently during normal use so as to increase its service life.
When it comes to printing press machine, everyone is very familiar with it. It is a printing device and belongs to the category of equipment accessories. The printing machine is a machine for printing characters and images. Modern printing press machines generally consist of a structure such as plate loading, ink coating, embossing, and paper feeding. The invention and development of printing presses play an important role in the spread of human civilization and culture. So how do we classify it? Let's take a look at Naibi Printing for a brief introduction.
Letterpress printing machine
What is a letterpress press? A letterpress printing machine is a machine in which the graphic information on the printing plate is higher than the blank area. The letterpress printing machine can be further divided into a flat pressing type letterpress printing machine, a circular flat type letterpress printing machine, and a circular pressing type letterpress printing machine. The printing characteristics of the letterpress printing machine are that the ink color is thicker, and it can generally be printed on a rough substrate. The color tone is generally reproducible, and is mainly used for trademarks, packaging and decoration printing, and newspaper printing.
Lithographic printing machine
The so-called lithographic printing machine is a machine that uses a lithographic printing process to complete the printing process. There are three types of lithographic printing machines, offset printing machines and stencil printing machines, mainly based on offset printing machines. Using the principle of water and oil repellent, the graphic part is resistant to water and oil, and the blank part is resistant to oil and hydrophilic without sticking ink, and the ink of the inked part is transferred to the surface of the printed matter under pressure to complete printing. It is distinguished from other printing methods by the feature of a dampening device.
Gravure printing machine
An intaglio printing press is a machine in which the graphic portion of the printing plate is recessed and the blank portion is on the same plane as the outer circumference of the plate cylinder. The gravure printing machine is printed by circular pressing direct printing, and the printing plate is directly formed on the plate cylinder, and the ink is inked or inkjet. Since the ink layer is thick, a quick-drying ink with strong volatility is used, and a drying device is required, which is generally applied to glass bag printing of instant noodles, and aluminum foil bag packaging of biscuits.
Label screen printing machine
The label screen printing machine uses a screen plate to complete the printing process. It is generally divided into a flat screen printing machine, a curved screen printing machine, and a rotary screen printing machine. Screen printing machine is a representative printing equipment in stencil printing machine. Its printing plate is a criss-crossing, warp and latitude wire mesh woven from materials such as silk. Mainly used for screen printing, circuit board printing, cloth printing, can printing, imprinting, partial glazing, etc.
The above is a brief introduction to the four classifications of the printing press. Through this sharing, can you initially distinguish the printing press?
Contact to Guangzhou Nickel Printing Machinery Co., Ltd