What are the precautions for fresh air system decoration? What are the decoration skills of fresh air system?

Fresh air system is an independent air handling system, which consists of air supply system and exhaust system. If you want to use the fresh air system well, you need to pay attention to decoration. What are the precautions for fresh air system decoration? Today, let's talk about the precautions and skills of fresh air system decoration.

1. What are the precautions for fresh air system decoration?

1, host

According to the external dimensions of the ventilation main machine, the fixed frame of the ventilation main machine is made and rustproof treatment is carried out; Install the main engine horizontally at the top of the house, as close as possible to the hall connected with the air inlet; When the main ventilator is fixed on the fixed frame, the rubber shock-proof block is used for shock-proof treatment in the middle. The fixed frame of the horizontal calibration ventilation main machine shall not be deformed. There should be enough space near the installation position of ventilation main engine to facilitate maintenance; When the home fresh air main machine is installed in the ceiling, there should be an access opening not less than 450450 near it, and the reserved position of the access opening should be convenient for maintenance, and there should be no shelter above it.

2. Ventilation pipes

Pipeline direction, pipeline diameter and tuyere installation position shall meet the requirements of design drawings; The cutting mouth of the pipe should be smooth and free of burrs. The joint between pipe fittings shall be riveted or bonded firmly, and no residual glue shall be left on pipe fittings or pipe fittings; Pipeline installation should be horizontal and vertical. The inner diameter of the pipeline is clean and free of sundries; PVC pipes shall be fixed with supports and hangers. If a pipe hoop is used, its inner surface should be close to the outer wall of the pipeline. Brackets and pipes should be fixed firmly without looseness; All wall holes through which the pipeline passes shall be opened by mechanical punching machine, and it is forbidden to change the aperture and position without permission; Spacing between supports and hangers of air duct.

3, tuyere

The air inlet must be sealed with foaming agent and waterproof; When installing the air outlet, choose the opening close to the main engine and communicating with the outdoor, install the wall bridge and seal it with foaming agent. The wall bridge should be flush with the external wall. PEF tape is used as the intermediate transition at the junction of the rain-proof air outlet and the wall bridge, and the installation of the air outlet should be correct, flat, tight and beautiful; The air inlet of the kitchen room should be far away from the outdoor air inlet and exhaust outlet of the stove and equipment, away from the exhaust outlet of the range hood and the exhaust outlet of the wall-hung boiler; It is not recommended to make air supply outlets and exhaust outlets in the bathroom; The air inlet should be located in a place with clean outdoor air.

Second, what are the decoration skills of fresh air system?

1, pipe punching

All wall holes through which the pipeline passes shall be opened by mechanical punching machine. Whether the structural conditions of the location that needs to pass through the wall are met or allowed cannot be at the expense of destroying the overall structure of the room. The size of the hole is determined according to the size of the pipeline, and the position should be accurately positioned according to the installation diagram of the fresh air system.

2. Hoisting the main engine

The main engine is generally installed in the ceiling of balcony, kitchen or bathroom, and the distance from the air duct should not be too long. It is best for the machine to directly contact the air duct, and the bend from the machine to the tuyere or flue should be minimized to reduce the resistance. The installation position of the main engine should be correct and horizontal. When installing, the hanger nut of the main engine must have anti-loosening measures to ensure firm installation and avoid excessive operation noise. There must be a manhole under the junction box of the main engine, and the installation position of the main engine must be convenient for installation and maintenance.

3. The air duct is connected to the main engine.

In principle, the connection between the air duct and the main engine adopts aluminum foil or fireproof canvas with flange. Aluminum foil or fireproof canvas can't be wound, and can't be used as leveling pipe or reducing pipe. The tightness of aluminum foil or fire-proof canvas should be appropriate, and the soft joint used as the return air pipe should be tightened appropriately to prevent deformation due to suction and reduce the cross-sectional area.

4. Installation of air inlet

The air inlet should be installed under the window sill as far as possible and easy to install, so as to avoid dead corners as far as possible, so that fresh air and indoor dirty air can form a circulation system and maintain the continuous circulation of indoor air; The installation should be firm, and the tuyere should be close to the wall or window frame inside and outside; Seal with glass glue during installation.

5. Installation of air outlet

The air outlet of the toilet should be installed above the toilet as far as possible, and the indoor air outlet should be installed above the door frame as far as possible, so that fresh air and exhaust air can form a ventilation circulation system, so that the indoor air can always circulate and keep fresh; The air outlet should be installed firmly, and it must be close to the wall or roof.

It can be seen that the decoration of fresh air system needs to pay attention to the decoration matters and skills such as pipe punching, main engine hoisting, air duct connection with main engine, air inlet and air outlet installation, and don't miss a detail, so that these details can facilitate subsequent use.