Pipeline type fresh air ventilator with variable diameter shell and reducing method of pipeline type fresh air ventilator

Abstract

The invention provides a pipeline type fresh air ventilator with a variable diameter shell. The fresh air ventilator with the variable diameter shell is composed of a motor, an impeller, the variable diameter shell, a cylinder and air filter devices. The size of a wall installation hole can be reduced as much as possible through the design of the variable diameter shell, and huge damage to a wall is avoided. An air supply system of the fresh air ventilation can be arranged outdoors, and the purposes of lowering indoor noise and saving indoor space are achieved. According to the variable diameter shell, a spherical elastic framework with the two ends opened is defined by a plurality of metal sheets good in elasticity and used for supporting flexible materials, and the shell is manufactured; one opening end of the elastic framework is fixed, the other opposite opening end can slide, and the diameter of the shell is changed through adjustment on the sliding end position of the elastic framework. The motor and the impeller are arranged at the center of the variable diameter shell, and the air inlet end and the air outlet end of the cylinder are provided with the air filter devices different in filter precision correspondingly.

Description

Technical field: [0001] The invention relates to a pipeline type fresh air fan, in particular to a fresh air fan with a variable-diameter shell and a method for changing the diameter of the shell, belonging to the field of air purification. Background technique: [0002] The fresh air fan is a device that purifies the outdoor air and sends it indoors to deal with the current air pollution. It can be used in different buildings such as office buildings, housing, hotels, banks, etc., to achieve the purpose of filtering the outdoor fresh air from the indoor dirty air. The air is continuously replaced, reducing the concentration of inhalable particulate matter and carbon dioxide in the room, so that people who stay indoors for a long time can breathe fresh air. At present, the air supply system, filter system and air outlet system of the existing fresh air fan are all installed indoors, and only the air inlet pipe protrudes to the outside through the hole on the wall, so there a...

AI Technical Summary

Problems solved by technology

At present, the air supply system, filter system and air outlet system of the existing fresh air fan are all installed indoors, and only the air inlet pipe protrudes to the outside through the hole on the wall, so there are the following problems: 1. The core mechanical components of the air supply system are The motor and impeller will vibrate during operation, which increases the indoor noise; 2. The equipment occupies indoor space

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