Fan coil capable of being cleaned and disinfected without disassembling and cleaning and disinfecting method

Abstract

The invention discloses a fan coil without disassembly, cleaning and disinfection, which comprises a return air box, a coil box body, a fan, and a condensed water tray; a coil is arranged in the coil box, and the fan includes a motor, an impeller, a volute and a fan bracket The volute is fixed on the fan bracket, and its air outlet faces the coil and is located at the lower part of the volute; the fan bracket and the return air box are connected by connecting pieces; the upper part of the fan bracket is fixed with a cleaning and disinfection main pipeline, and the cleaning and disinfection main pipeline is provided with External branch pipes and built-in branch pipes; the external branch pipes are distributed on the left and right sides of the volute, and the water outlet is bent towards the impeller; the built-in branch pipes pass through the fan bracket, and the water outlet faces the coil. The present invention also provides an automatic cleaning and disinfection method for the fan coil unit. The invention realizes the disassembly-free cleaning and disinfection of the fan coil unit, improves the position of the air outlet of the volute, cleans thoroughly, and solves the problems of water accumulation, water leakage and bearing water inflow in the existing volute.

Description

technical field [0001] The invention relates to a fan coil without disassembly cleaning and disinfection and a cleaning and disinfection method for the fan coil, belonging to the technical field of cleaning and disinfection of central air conditioners. Background technique [0002] The central air-conditioning cleaning industry began to develop in 2003. Since 2003, due to the sudden "SARS" epidemic, domestic attention has been paid to the central air-conditioning ventilation ducts that have been neglected for many years. Premier Wen Jiabao, who was the Premier of the State Council at the time, gave instructions, which opened the central air-conditioning cleaning industry. As early as 2004, the Ministry of Health organized supervision and inspection of the sanitation status of centralized air-conditioning and ventilation systems in public places in 30 provinces, autonomous regions, and municipalities directly under the Central Government. A total of 937 public places in more...

AI Technical Summary

Problems solved by technology

For the convenience of installation, it is assembled on the ground and then hoisted. Due to space design requirements, the space on the top and bottom of the air return box is generally small, and it is difficult to use tools. It is inconvenient to disassemble and restore by riveting. It is connected by self-tapping screws, which should not be repeated. to disassemble

In addition, the connection between the fan coil parts is a self-tapping connection, and repeated disassembly may cause slippage, etc., and the connection between the fan part and the coil needs to be insulated and isolated, and the insulation layer is easy to fall off under the action of cold and heat. Disassemble, clean and disinfect, need to restore heat preservation

Insulation wear will cause condensation on the outer surface of the fan during cooling

[0005] 2. Most of the fan coil units are concealed, and most of the cleaning and disinfection require personnel to fully enter the roof through the inspection port to work. Uneven application of force may easily cause the roof to crack or collapse, and the wiring inside the roof is complicated, and the initial installation and construction Or if there is irregular construction or aging lines during the later transformation, it is very easy to cause dangerous situations such as electric shock

[0006] 3. It is difficult to disassemble, clean and disinfect fan coil units, and the cost is relatively high. Generally, managers in public places do not pay much attention to the safety of the air system, and the high cost of cleaning and disinfection is unacceptable

[0007] Based on the above situation, a variety of disassembly-free cleaning and disinfection equipment and methods have appeared on the market, but when these non-disassembly cleaning and disinfection equipment clean the wind wheel, dirty water will accumulate in the fan volute, and the dirty water is not easy to discharge. Slowly seeps into the plaster top or drips into the room through the return air vent

Dry steam cleaning and disinfection will not produce accumulated water, but its principle is to use low-pressure dry steam to blow away the dust attached to the fan coil. Sometimes it is sterilized by high temperature, but in essence, it does not metabolize away dust and bacteria, but only transfers them to the room or other places on the roof, which does not achieve the meaning of actual cleaning and disinfection

[0008] Therefore, in the existing method of cleaning and disinfecting without disassembling the equipment, due to the connection structure between the impeller and the coil, it is impossible for any gun head to completely clean and disinfect the coil, so it cannot be thoroughly cleaned and disinfected

Because it is invisible, the effect of cleaning and disinfection can only depend on manual operation, and the standardization is difficult to unify

When disassembling, cleaning and disinfecting, the bearings of the fan should be protected in time, and it is easy to get water, which will cause some bearings to rust after cleaning and produce abnormal noise

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