Central air-conditioning air flue with slit valve

Abstract

The invention relates to a central air-conditioning air flue with a slit valve. The air flue is provided with an air flue body and 3-5 air outlets; and the air outlets are square, the side length of the air outlets is a, the air outlets are formed on a base plate of the air flue, and the cross section of the air flue body is rectangular. The central air-conditioning air flue is characterized in that an air guide passage installed in a manner of being closely attached to the base plate of the air flue body is arranged inside each air outlet, and each air guide passage is divided into an air inlet, a passage body and an air outlet flow guide section, wherein each air inlet faces the direction of an air source, and the air inlets and the passage bodies are in shapes of arches with same semi-circle cross sections. The passage bodies are connected with the air outlets through the air outlet flow guide sections in an arc-shaped smoothing manner, the distances between the sides, close to the outer airs, of the edges of projections of the passage bodies on the base plate of the air flue body and the lateral edges of the air outlets range from 0.1 a to 0.2 a, the length of the passage bodies ranges from 1 a to 2 a, and the length of the air inlets ranges from 0.5 a to 0.8 a; one-way valves opening inwards are arranged at inlets of the air inlets, the valves are opened and closed through torsion springs, slit-shaped holes are arranged on the valves, and the slit directions of the slit-shaped holes are parallel to the base plate of the air flue body; and the door plank porosity of the valve closest to the air source ranges from 55% to 60%, the door plank porosities of the valves are decreased along with increase of the distances between the valves and the air source, and the lowest door plank porosity is 20%.

Description

technical field [0001] The invention relates to an air-conditioning ventilation duct. Background technique [0002] The design and installation of the air duct is an important part of the installation of the central air conditioner. The effect of the design and installation of the air duct directly determines the operation effect and energy consumption of the air conditioner. The central air-conditioning air ducts in the prior art are mostly made of aluminum plates, galvanized plates and other materials and are lined with thermal insulation materials, and are opened at appropriate positions for the air to flow out. However, it is difficult to achieve uniform air flow in the traditional air duct air outlet design. , the air volume often decreases according to the distance between the air outlet and the air source, but Chinese patent ZL201320532538 discloses an air-conditioning air duct, which adopts the method of designing guide vanes of different heights at the air outlet, b...

AI Technical Summary

Problems solved by technology

The air ducts of central air conditioners in the prior art are mostly made of aluminum sheets, galvanized sheets and other materials and are lined with thermal insulation materials, and are opened at appropriate positions for air outlets, but it is difficult to achieve uniform air outlet design in traditional air ducts. , the air volume often decreases according to the distance between the air outlet and the air source, but Chinese patent ZL201320532538 discloses an air-conditioning air duct, which adopts the method of designing guide vanes of different heights at the air outlet, but we found that this guide vane Cause relatively large resistance to the flow field in the air duct, resulting in energy loss

China ZL201320111164.2 discloses a flow equalizing air duct, which uses a variable diameter air duct and a shielding piece that can adjust the area of ​​the air outlet. However, we found that the variable diameter air duct is difficult to process and install, and the shielding piece is not easy to control The air volume, and the baffle itself tends to generate a lot of noise under the condition of air outlet

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