CN206092479U - Auxiliary ventilating fan variable frequency speed governing(VFSG) ware based on PLC control - Google Patents

Abstract

The utility model relates to the technical field of ventilation devices, in particular to a local fan frequency conversion speed regulator based on PLC control. There is a first ventilation hole, the inner wall of the ventilation joint is provided with a rotating shaft seat, and a rotating shaft is installed on the rotating shaft seat, and the rotating shaft runs through the outer wall of the ventilation joint. A temperature detector is installed on one side of the outer wall of the joint, a transmission gear is installed on the outer wall of the rotating shaft, a servo motor is installed in the inner cavity of the ventilation joint, and a PLC controller is installed in the inner cavity of the ventilation joint. The speed controller can automatically adjust the ventilation rate by detecting the local temperature. It is suitable for the communication room that needs ventilation and cooling. It does not need manual supervision, has a high degree of intelligence, reduces operating costs, and is energy-saving and environmentally friendly.

Description

A Frequency Conversion Speed Regulator of Local Ventilator Based on PLC Control

technical field

The utility model relates to the technical field of ventilation devices, in particular to a PLC-based frequency conversion speed regulator for local fans.

Background technique

At present, communication room, Internet room and other places are equipped with various equipments. These equipments generate a lot of heat when they are in use. The heating of these equipments makes the temperature of itself rise, which seriously affects the normal operation of the equipment. guarantee of operation. The current computer room generally adopts one or more cooling heat pumps distributed in various parts of the equipment room to cool and dissipate the entire equipment room. Due to the large number of equipment in the computer room, the heating conditions of each equipment are different. Some equipment generates more heat and heats up quickly, while some equipment generates less heat and heats up slowly. The existing air supply device cannot intelligently adjust the local air supply volume. , The heat pump can only be turned on with high power, so that the entire room can be cooled to the point where the equipment that heats up quickly can also meet the cooling requirements, which greatly increases the energy consumption of the heat pump, increases the operating cost, and wastes a lot of energy.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and propose a local fan frequency conversion speed regulator based on PLC control.

In order to achieve the above object, the utility model adopts the following technical solutions:

Design a local ventilator frequency converter based on PLC control, including a ventilation joint and a power supply, one side of the ventilation joint is fixedly connected with a cold air pipe for the ventilation joint to provide cold air, the cold air pipe is connected with an intelligent fan, and the ventilation The outer wall of the other side of the joint is provided with a first ventilation hole, the inner wall of the ventilation joint is provided with a rotating shaft seat, and a rotating shaft is installed on the rotating shaft seat, and the rotating shaft runs through the outer wall of the ventilation joint, and the end of the rotating shaft away from the cold air pipe is connected to the The outer wall of the windshield is fixedly connected, and the side of the windshield away from the outer wall of the ventilation joint is provided with a temperature detector;

The outer wall of the rotating shaft is equipped with a transmission gear, the inner cavity of the ventilation joint is provided with a servo motor, and a gear meshing with the transmission gear is installed on the servo motor, and the inner cavity of the ventilation joint is provided with a PLC controller. The power supply is connected with the temperature detector, the PLC controller and the servo motor in turn.

Preferably, the temperature detector is an infrared temperature control switch.

Preferably, the ventilation joint is funnel-shaped, and the number of first ventilation holes on the outer wall of the ventilation joint away from the cold air pipe is not less than two.

Preferably, the diameter of the gear on the servo motor is 1/4 of the diameter of the transmission gear.

The utility model proposes a local fan frequency conversion speed regulator based on PLC control, which has the beneficial effects of: a ventilation joint and a windshield are provided, the inner cavity of the ventilation joint is provided with a rotating shaft, and the rotating shaft is fixedly connected with the windshield. When the wind plate rotates, it can control the air supply area of the ventilation joint, so as to achieve the function of controlling the air supply volume. At the same time, a temperature detector is installed on the outer wall of the wind deflector. When the temperature detector detects that the temperature near the wind deflector is too high , the PLC controller controls the rotation of the servo motor, thereby driving the windshield to rotate. When the windshield rotates, the ventilation area of the first ventilation hole can be adjusted, so as to achieve the function of automatically adjusting the ventilation volume. The frequency conversion of the local fan based on PLC control The speed controller can automatically adjust the ventilation rate by detecting the local temperature. It is suitable for the communication room that needs ventilation and cooling. It does not need manual supervision, has a high degree of intelligence, reduces operating costs, and is energy-saving and environmentally friendly.

Description of drawings

Fig. 1 is the plan view of a kind of local ventilator frequency conversion governor based on PLC control that the utility model proposes;

Fig. 2 is the front view of a kind of variable frequency speed governor of local ventilator based on PLC control proposed by the utility model;

Fig. 3 is a functional block diagram of a local fan frequency conversion speed regulator based on PLC control proposed by the utility model.

In the figure: 1 cold air pipe, 2 ventilation joint, 3 PLC controller, 4 servo motor, 5 windshield, 6 temperature detector, 7 first ventilation hole, 8 second ventilation hole, 9 transmission gear, 10 power supply, 11 Revolving shaft seat, 12 revolving shafts.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Referring to Figures 1-3, a variable frequency speed regulator for local fans based on PLC control includes a ventilation joint 2 and a power supply 10. One side of the ventilation joint 2 is fixedly connected with a cold air pipe 1 for the ventilation joint 2 to provide cold air. The cold air pipe 1 is connected to the smart fan, the outer wall of the other side of the ventilation joint 2 has a first ventilation hole 7, the inner wall of the ventilation joint 2 is provided with a shaft seat 11, and a shaft 12 is installed on the shaft seat 11, and the shaft 12 runs through the ventilation joint 2 The outer wall, the end of the rotating shaft 12 away from the cold air pipe 1 is fixedly connected to the outer wall of the windshield 5, the side of the windshield 5 away from the outer wall of the ventilation joint 2 is provided with a temperature detector 6, the ventilation joint 2 is funnel-shaped, and the ventilation joint 2 The number of the first ventilation holes 7 opened on the outer wall of the side away from the cold air duct 1 is not less than two.

The outer wall of the rotating shaft 12 is equipped with a transmission gear 9, the inner cavity of the ventilation joint 2 is provided with a servo motor 4, and a gear meshing with the transmission gear 9 is installed on the servo motor 4, and the inner cavity of the ventilation joint 2 is provided with a PLC controller 3, Power supply 10 is connected with temperature detector 6, PLC controller 3, servo motor 4 successively, and temperature detector 6 is an infrared temperature control switch, and when temperature detector 6 detects that the temperature near windshield 5 is on the high side, PLC controller 3 Control the rotation of the servo motor 4 to drive the windshield 5 to rotate. When the windshield 5 rotates, the ventilation area of the first ventilation hole 7 can be adjusted to achieve the function of automatically adjusting the ventilation volume. The structure is simple and practical, and the servo motor 4 The diameter of the gear is a quarter of the diameter of the transmission gear 9, so that the servo motor 4 can accurately adjust the ventilation area of the first ventilation hole 7, and the adjustment accuracy is high. It is suitable for communication rooms that require ventilation and cooling without manual supervision. High degree of intelligence, reduced operating costs, energy saving and environmental protection.

Working principle: When the temperature detector 6 detects that the temperature near the windshield 5 is too high, the PLC controller 3 controls the rotation of the servo motor 4, thereby driving the windshield 5 to rotate, and the first ventilation hole can be adjusted when the windshield 5 rotates 7 of the ventilation area, so as to achieve the function of automatically adjusting the ventilation volume, thus realizing the purpose of intelligently adjusting the local ventilation volume, with simple structure and strong practicability.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Any equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (4)

1. a local ventilator variable frequency speed regulator based on PLC control, comprising a ventilation joint (2) and a power supply (10), it is characterized in that one side of the ventilation joint (2) is fixedly connected with a ventilation joint (2) ) provides a cold air pipe (1) for cold air, the cold air pipe (1) is connected to the smart fan, and the outer wall of the other side of the ventilation joint (2) has a first ventilation hole (7), and the ventilation joint (2) The inner wall of the shaft is provided with a rotating shaft seat (11), the rotating shaft (12) is installed on the rotating shaft seat (11), the rotating shaft (12) runs through the outer wall of the ventilation joint (2), and the rotating shaft (12) is far away from the cold air pipe (1) One end of the windshield (5) is fixedly connected to the outer wall of the windshield (5), and the side of the windshield (5) away from the outer wall of the ventilation joint (2) is provided with a temperature detector (6); the outer wall of the rotating shaft (12) is installed There is a transmission gear (9), and the inner cavity of the ventilation joint (2) is provided with a servo motor (4), and a gear meshing with the transmission gear (9) is installed on the servo motor (4), and the ventilation joint (2) ) is provided with a PLC controller (3), and the power supply (10) is connected with the temperature detector (6), the PLC controller (3), and the servo motor (4) in sequence. 2. A local fan frequency converter based on PLC control according to claim 1, characterized in that the temperature detector (6) is an infrared temperature detector. 3. A kind of variable frequency speed governor of local fan based on PLC control according to claim 1, characterized in that, the ventilation joint (2) is funnel-shaped, and the ventilation joint (2) is far away from the cold air pipe (1) The number of first ventilation holes (7) opened on one side of the outer wall is not less than two. 4. A kind of variable frequency speed regulator for local fan based on PLC control according to claim 1, characterized in that, the diameter of the gear on the servo motor (4) is 1/4 of the diameter of the transmission gear (9) .