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A constant flow control method

A control method and constant flow technology, applied in heating and ventilation control systems, heating methods, shielding with air flow, etc., can solve the problem of high cost

Active Publication Date: 2021-08-24
ZHEJIANG MENRED ENVIRONMENT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to balance the air volume in the fresh air and exhaust air systems, in the prior art, a speed tester is often installed on the side of the fan motor, or the pressure difference between the front and rear sides of the motor is measured, but this method is costly

Method used

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Embodiment Construction

[0037] Such as figure 1 and figure 2 As shown, a constant flow control method includes the following steps:

[0038] Step 1: Obtain the real-time temperatures in the first air inlet chamber 1, the second air inlet chamber 3 and the first air outlet chamber 4 through the temperature detector 5, and calculate the fresh air temperature efficiency Vo;

[0039] Step 2: Obtain the real-time temperatures in the second air inlet chamber 3, the second air outlet chamber 2 and the first air inlet chamber 1 through the temperature detector 5, and obtain the exhaust air temperature efficiency Vi through calculation;

[0040] Step 3: Calculate the real-time efficiency difference △V through the fresh air temperature efficiency Vo and the exhaust air temperature efficiency Vi;

[0041] Step 4: Input the predetermined target efficiency difference Vs in the circuit board 6, and adjust the speed of the fresh air fan 7 and / or the return air fan 8 through the difference between the real-time e...

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Abstract

The invention provides a constant flow control method and belongs to the technical field of fresh air equipment. It includes the following steps: Step 1: Get the real-time temperature in the first air inlet chamber, the second air inlet chamber and the first air outlet chamber through the temperature detector, and calculate the fresh air temperature efficiency Vo; Step 2: Through the temperature The detector acquires the real-time temperatures in the second air inlet chamber, the second air outlet chamber and the first air inlet chamber, and calculates the exhaust air temperature efficiency Vi. When the absolute value of △V>the target efficiency difference Vs, the controller 6 can adjust the speed of the fresh air fan 7 and / or the return air fan 8 so that the absolute value of △V≤the target efficiency difference Vs, even if the fresh air channel and the return air The flow in the air channel is adjusted to a reasonable difference range.

Description

technical field [0001] The invention belongs to the technical field of fresh air equipment and relates to a constant flow control method. Background technique [0002] The fresh air system is an independent air treatment system composed of an air supply system and an exhaust system. It is divided into two types: ducted fresh air system and ductless fresh air system. The ducted fresh air system is composed of fresh air fans and pipe fittings. The outdoor air is purified by the fresh air fans and introduced into the room, and the indoor air is discharged through the pipes. The ductless fresh air system is composed of fresh air fans. Relatively speaking, the ducted fresh air system is more suitable for industrial or large-area office areas due to the large amount of engineering, while the ductless fresh air system is more suitable for home use because of its easy installation. In 1935, after many attempts, Auston Chunyi invented and manufactured the world's first heat exchange...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F7/007F24F11/64F24F11/89F24F11/88F24F11/77F24F12/00F24F13/28
CPCF24F7/007F24F12/001F24F13/28F24F11/64F24F11/77F24F11/88F24F11/89Y02B30/70
Inventor 陈巍陈魏方姚梦兰陈云
Owner ZHEJIANG MENRED ENVIRONMENT TECH CO LTD