CN201690396U

CN201690396U - Fixed frequency control apparatus

Info

Publication number: CN201690396U
Application number: CN2010202155803U
Authority: CN
Inventors: 尤翠敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-05-27
Filing date: 2010-05-27
Publication date: 2010-12-29
Anticipated expiration: 2020-05-27

Abstract

A fixed frequency control apparatus arranged on a power source of an equipment room comprises a switch alternatively chose to instruct frequency-varied rotation or direct-run rotation; when changed for direct-run rotation, power deviates from the fixed frequency control apparatus and is directly transmitted to the motor of the equipment to make electronic equipment operate; when changed for frequency-varied rotation, a programmed logic control unit contained in the fixed frequency control apparatus is initiated which further drives a timer to set a rotation time and to make the frequency control apparatus regulate the frequency so as to control the frequency converter with a result to determine the load rotating speed of the motor in an energy-saving manner; in addition, since all the components are arranged in a switch box except the switch and alert lights arranged outside the box, easy operations can be made to set a time even by a person with not so much knowledge about the field, therefore, making unnecessary the recruitment for senior engenderers, which is really an innovative point.

Description

Decide audio-frequency control device

Technical field

The utility model relates to the field of power equipment, is meant a kind of audio-frequency control device of deciding that is arranged at power supply and equipment room especially.

Background technology

Lack gradually owing to the energy in recent years, how effectively saving the energy has become key subjects of industry, along with the electricity needs of power consumption equipment constantly increases, to how to allow the power and energy saving effect promote, therefore how in the use effect that promotes power consumption equipment under the identical power consumption or how under identical power consumption, to increase the quantity of power consumption equipment, seemed very very urgent.

Wherein, with regard to the general existing frequency converting and energy saving device that is applied on the motor, it comprises a mechanical control device, a pressure flow control unit, a frequency converter and a motor and forms, by this mechanical control device through this pressure flow control unit control of conversion device, making this frequency converter is variable with fixing supply voltage and frequency transitions, do not have the running speed of section adjustment motor, and it is energy-conservation to carry out the load of the adjusting of the adjusting of air quantity of fan or group's Pu water yield and speed or oil pressure machinery; Yet though above-mentioned frequency conversion power saving device can reach energy-conservation expection effect, it only can carry out single-mode control.

Though above-mentioned frequency converting and energy saving device can reach the effect of energy saving on motor, yet, this frequency converting and energy saving device needs when making and motor is manufactured in the lump and electric connection mutually, if when there is no built-in frequency converting and energy saving device on user's existing power equipment, then can't see through converter plant and reach the purpose of saving the energy, the user certainly will eliminate and change its power equipment, more causes the burden on user's use cost; Therefore how change the purpose that can reach energy-saving and frequency-variable on the existing power equipment again not eliminating, the problem that overcomes and solve for another urgent need.

Especially, commonly see product often with converter plant, timer ... Deng being equipped with separating device, cause operation inconvenience, and set when adjusting, must rely on senior professional senior engineer again, operating efficiency is had a greatly reduced quality.This shows that the above-mentioned power equipment of commonly using still has many disappearances, this case creator commonly uses every shortcoming that power equipment is derived in view of above-mentioned, is improved innovation, and after research for many years, and successfully research and development are finished this and decided audio-frequency control device finally.

The utility model content

The purpose of this utility model is to provide a kind of compact conformation, simple to operate decides audio-frequency control device, only needs the utility model decided that audio-frequency control device is arranged at power supply and equipment room gets final product, and need not reequip existing equipment.

For reaching this purpose, the technical solution that the utility model adopts is: a kind ofly decide audio-frequency control device, it includes: a selector switch, be arranged at the switch-box outside, switch selection input power supply system for the user and to the motor of equipment, turn round, when the user switches to the direct sending function of motion, see through the direct sending mains switch and directly transmit the motor running start of electric power to equipment through frequency conversion running or direct sending, when the user switches to the frequency conversion function of motion, then start following programmable logic controller; One programmable logic controller, the electric power when seeing through selector switch and selecting the frequency conversion running and starting, and drive timer in it and set the duration of runs and the frequency controller size of adjusting frequency; One frequency converter is controlled its running by the programmable logic controller, in order to the frequency and the amplitude of change power supply, and sees through the motor of deciding the switch activated equipment of variable frequency power supply in the audio-frequency control device.

This selector switch is provided with indicator light, and this selector switch, indicator light, programmable logic controller, timer, frequency converter, frequency controller etc. are all assembled and are arranged at switch-box.

This indicator light is arranged at the periphery of selector switch, and during according to selector switch pattern and unusual condition, shows with different colours light respectively.

Adopt such scheme, the changeable selection input of user's operating selection switch power supply is to turn round to the motor of equipment through frequency conversion running or direct sending, when the user switched to the direct sending function of motion, electric power was then without deciding motor and then the running start that audio-frequency control device directly is sent to equipment; When the user switches to the frequency conversion function of motion, then start following programmable logic controller, by the running of programmable logic controller control of conversion device, in the frequency and the amplitude that change power supply, the load speed of gyration of the motor of adjustment equipment further reaches energy-saving effect; And all components is arranged at selector switch, warning lamp outside the case in conjunction with placing in the switch-box, easy operating and management, and general operator can be carried out in the time must setting adjustment, and must not rely on senior professional senior engineer.

Description of drawings

Fig. 1 decides the enforcement block schematic diagram of audio-frequency control device for the utility model.

Fig. 2 decides the frequency conversion service performance schematic diagram of audio-frequency control device for the utility model.

The different capacity motor that Fig. 3 decides audio-frequency control device for the utility model can reduce the consumes power schematic diagram.

The main element symbol description

1 decides audio-frequency control device 10 selector switches 20 programmable logic controllers

30 timers, 40 frequency controllers, 50 frequency converters

60 direct sending mains switches, 70 variable frequency power supply switches, 80 motors

Embodiment

Below in conjunction with preferred embodiment and conjunction with figs. the utility model is described in detail below.

See also shown in Figure 1ly, be the enforcement block schematic diagram of deciding audio-frequency control device provided by the utility model, it includes:

One selector switch 10, be arranged at the switch-box outside, can select the input power supply for switching, see through frequency conversion running or direct sending to the motor 80 of equipment, when switching to the direct sending function of motion, electric power then without deciding motor 80 and then the running start that audio-frequency control device 1 directly is sent to equipment, when switching to the frequency conversion function of motion, then starts following programmable logic controller 20;

One programmable logic controller 20 sees through the power supply that selector switch 10 transmits and starts, and sees through programmable logic controller 20 driving timing devices 30 and set the durations of runs and frequency controller 40 size of adjusting frequency;

One frequency converter 50, by 20 its runnings of control of programmable logic controller, the effect of this frequency converter 50 is frequency and the amplitudes that change power supply, thereby change cycle of its moving magnetic field, and see through the motor 80 of deciding variable frequency power supply switch 70 starting devices in the audio-frequency control device 1, and see through the load speed of gyration that frequency converter 50 is adjusted the motor 80 of equipment, further reach energy-saving effect, in addition, the utility model can be arranged at outdoor or indoor according to user's purposes.

What deserves to be mentioned is, when user's operating selection switch 10, its other indicator light (not marking) can show with different color lights according to selected mode, (for example green light represent electric power direct sending running, red colored lamp represent the frequency conversion running), when unusual condition takes place when, the then bright lamp of fault display lamp (orange lamp) allows the user handle immediately.

See also Fig. 2 and shown in Figure 3, frequency conversion service performance schematic diagram and the different capacity motor of deciding audio-frequency control device for the utility model can reduce the consumes power schematic diagram; Because fan, pumping have following characteristic P (motor power consumption)=Q (flow or air quantity) x H (lift or pressure), and flow (Q) is directly proportional with motor rotary speed (N), lift (H) becomes duplicate ratio with motor rotary speed (N), therefore see through frequency converter and can reduce specified speed of gyration, if reduce the specified speed of gyration of fan and circulation pumping etc., then can be as shown in Figures 2 and 3, because of the frequency conversion service performance reduces motor power consumption (3 powers of slip and speed of gyration are proportional), and then reach a large amount of energy-saving effects.

Above-listed detailed description is specifying at a possible embodiments of the present utility model, this embodiment is not in order to limit claim of the present utility model, all do not break away from the utility model claims and description institute for it equivalence implement or change, all should be contained in the claim of this case.

Claims

1. decide audio-frequency control device for one kind, it is characterized in that: include,

One selector switch, be arranged at the switch-box outside, for switching selection input power supply is to turn round to the motor of equipment through frequency conversion running or direct sending, when switching to the direct sending function of motion, see through the direct sending mains switch and directly transmit the motor running start of electric power to equipment, when switching to the frequency conversion function of motion, then start following programmable logic controller;

One programmable logic controller, the electric power when seeing through selector switch and selecting the frequency conversion running and starting, and drive timer in it and set the duration of runs and the frequency controller size of adjusting frequency;

One frequency converter is controlled its running by the programmable logic controller, in order to the frequency and the amplitude of change power supply, and sees through the motor of deciding the switch activated equipment of variable frequency power supply in the audio-frequency control device.

2. as claimed in claim 1ly decide audio-frequency control device, it is characterized in that: this selector switch is provided with indicator light, and selector switch, indicator light, programmable logic controller, timer, frequency converter, frequency controller etc. are all assembled and are arranged at switch-box.

3. as claimed in claim 2ly decide audio-frequency control device, it is characterized in that: this indicator light is arranged at the periphery of selector switch, and during according to selector switch pattern and unusual condition, shows with different colours light respectively.