Cosmetics aseptic workshop workshop air purification equipment
Cosmetics aseptic pharmaceutical cleanroom workshop air purification equipment
Fan coil unit installation in cosmetic sterile workshop: Although the fan coil unit belongs to the terminal device of the air conditioning system, it has the function of running alone within a certain period of time. The fan coil unit consists of a fan and a coil unit. It is installed in an air-conditioned room. By starting the fan, the room...
Text label: Cosmetic sterile plant, plant air purification equipment
Cosmetic sterile pharmaceutical cleanroom air purification equipment
Fan coil unit installation in cosmetic sterile workshop: Although the fan coil unit belongs to the terminal device of the air conditioning system, it has the function of running alone within a certain period of time. The fan coil unit is composed of a fan and a coil unit. It is installed in an air-conditioned room. By turning on the fan, the indoor air is sucked into the unit as return air. Sexual circulation, so that it can achieve the purpose of indoor cooling or heating.
The cooling and heating media used in the fan coil unit are the same as the inducer, and are supplied centrally by the external cold source or heat source. Because the fan coil unit has the characteristics of flexible opening and closing and can adjust the operating conditions independently, in the high-rise Architecture has been widely adopted. However, in cold regions, the room temperature in winter is still guaranteed by the heating system, and the fan coil unit is mainly used for indoor cooling.
(1) Types and structures of fan coil units
According to the different installation positions, the fan coil unit can be divided into vertical exposed installation, vertical concealed installation; horizontal exposed installation, horizontal concealed installation; column type exposed installation, column type concealed installation and other forms. The basic structure of the fan coil unit consists of a box, an air filter, a fan, a motor, a coil and other components.
Unit box: It is made of light steel frame and thin steel plate, and its suction and outlet grilles are fixed or adjustable; the enclosure panel is detachable, which is convenient for equipment maintenance; the shape of the exposed unit box Aesthetically pleasing, surface paint shades coordinate with architectural finishes.
Air filter: There is an air filter at the return air intake of the unit to filter the indoor return air. If the filter is generally a drawer type, it can be replaced or cleaned without disassembling the unit.
Fan: The unit is equipped with two fans, the fans are double-inlet forward multi-blade centrifugal fans or cross-flow fans, which have good balance and are low-noise fans.
Motor: It adopts single-phase speed regulation and low noise motor, with high, medium and low speed, so as to change the air volume of the fan.
Coils: copper tubes and aluminum strings are mostly used. In summer, chilled water is used to cool and dehumidify the air. In winter, hot water is used to heat the air to collect condensed water.
(2) Matching parts of fan coil unit
The supporting parts of the fan coil unit include room temperature regulator, fan speed change switch, electric three-way or two-way control valve, water filter and flexible joint, etc.
1) Room temperature regulator
The room temperature regulator is also called the thermostat, which is used in conjunction with the electric control valve and the fan coil unit. There are two types of room temperature regulators: electronic and mechanical. The indoor temperature is detected by an electronic temperature sensing element or a bimetal temperature sensing element, and the on or off of the electric regulating valve is controlled by the electrical contact to change the air supply temperature of the fan coil to achieve The purpose of air conditioning room temperature automatic adjustment. Zhongjing Global Purification can provide consulting, planning, design, construction, installation and transformation of sterile workshops and clean workshops and other supporting services.
2) Electric regulating valve
There are two-way and three-way control valves matched with the fan coil unit, which are selected according to the specific conditions of the chilled water system. When the chilled water system is equipped with a differential pressure bypass regulating valve, a two-way regulating valve can be selected; when the chilled water system has no differential pressure bypass regulating valve, in order to ensure that the system can still operate at a constant water volume in the case of variable flow, the Three-way regulating valve.
The installation and operation of the electric control valve should be carried out according to the requirements of the design and product manual. In order to prevent condensation and dripping during operation, the valve body should be insulated after installation. In order to ensure safe operation, the electric control valve should be grounded to the casing.
3) Water filter
The water filter is installed at the inlet of the chilled water or hot water pipe of the fan coil, and its function is to filter the mechanical impurities in the pipe to protect the fan coil from clogging. The water filter is composed of shell, sewage cover, filter element, filter screen and other components. The total mesh area is 3 to 4 times of the cross-sectional area of u200bu200bthe inlet pipe; it should be installed horizontally and pay attention to the direction of water flow, and the sewage outlet should face downward.
4) Flexible joint
Flexible joints are used at the connection between pipes and fan coil units to eliminate water leakage due to hard connections, and at the same time to prevent damage to the fan coil units during the connection process. The commonly used flexible joint is a rubber flexible joint.
There is a live joint at each end of the joint, one end is connected with the pipeline, and the other end is connected with the fan coil.
(4) Installation of fan coil unit
1) Before the fan coil unit is in place, it should be reviewed according to the design requirements of the form, model and connection direction, and can only be installed after confirmation.
2) For the concealed fan coil unit, it should be closely coordinated with the interior decoration work during the installation process, and the maintenance port on the ceiling should be reserved.
3) The chilled water pipe or hot water pipe connected with the fan coil unit should be connected by pressing and sending back (ie low in and high out).
4) The condensate pan of the fan coil unit should have a slope of 3%~5% towards the condensate water outlet. If the slope is reversed, the accumulated water in the condensate pan may overflow.
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