CN1253408A

CN1253408A - Efficient electricity-saving method for electrothermal load of only resistor and its practical device

Info

Publication number: CN1253408A
Application number: CN 98122360
Authority: CN
Inventors: 廖家裕
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-11
Filing date: 1998-11-11
Publication date: 2000-05-17

Abstract

A method for saving power consumption of resistor-type electrothermal load by 50% round features that the high-amplitude pulse technique is used to make the average voltage and power be equal to or less than original rated voltage and power. The power is regulated by pulse width modulation. The service life of load is not affected. Said resistor-type electrothermal load may be industrial heater, electric boiler, electric stove, household electrothermal appliances, etc.

Description

Pure resistance efficient electricity-saving method for electrothermal load and utility unit

The pure resistance electrothermal load comprises industrial resistance heating device, electrically heated boilers, and common electric furnace, home electrical heater, incandescent lamp (comprising tungsten halogen lamp) etc., the actual use of this class load is extensive, also is one of power consumption rich and influential family.Not having real power-saving technique in the past, and it has been generally acknowledged that this class load power consumption and power supply form were irrelevant, and thought that sinusoidal ac and direct current all were the same, all is the product of voltage and electric current and time, i.e. U * I * H.Therefore, this type of loads on and regulates on power, the power-saving measures all is to adopt to subtract voltage or increase voltage to regulate, this method is a kind of indirect power-saving method, there is not real power savings, promptly under identical load, uniform temp or same brightness, can not economize on electricity, when moreover this class loads on operating on low voltage, efficient is very low, power consumption uprises relatively, when for example incandescent lamp was operated in halfwave rectifier, luminous efficiency was very low, luminous flux 40% during less than rated voltage, and actual power consumption about 65% when being rated voltage, rather than during rated voltage 0.45 times.

Utilization high-amplitude pulse technique, promptly pulse amplitude exceeds certain numerical value of rated voltage and rated power, just can make the pure resistance electrothermal load reach the purpose of real economize on electricity.When the average voltage of the pulse power and average power equal original rated voltage and rated power, the temperature of load or brightness are than original height (as Fig. 1), this be because, pulse voltage effect momentary load efficient height, but action time is very short, average voltage is not high, continuous operation does not influence the life-span, when the voltage effect finishes simultaneously, the temperature of load or brightness are not zero at once, but an inertia (not having stroboscopic phenomenon when for example incandescent lamp is operated in alternating current is exactly a well explanation) is arranged, and efficient is high more, inertia is big more, uses this pulse technique to make thermal inertia and brightness inertia be fully utilized.Therefore, needing suitably to turn pulse duration down under temperature or the brightness situation the same, just can make the real economize on electricity about 50% of this class electrothermal load with former supply power mode.Regulating power also only needs the regulating impulse width to get final product.

Realize that these technical measures are to increase pulse amplification circuit (as Fig. 2) on the basis of general pulse-width modulation electronic switch, because this device is to be operated in pure resistor load, load is constant, steady, and is minimum to electric network influencing.

Claims

1, utilization electronic technology is higher than the pure resistance electrothermal load of general industrial-frequency alternating current or powered by direct current the pulse power power supply of the former rated voltage and the pulse amplitude more than the rated power of load instead.

It is characterized in that:

A, change industrial-frequency alternating current or powered by direct current into pulse power power supply;

The pulse amplitude of b, the pulse power is higher than the former rated voltage and the rated power of load.

2, the pure resistance electrothermal load comprises: industrial resistance heating device, electrically heated boilers, common electric furnace, home electrical heater, incandescent lamp (comprising tungsten halogen lamp) etc.

3, the technical characterictic of Pulased power supply unit is to increase pulse amplification circuit on the basis of general pulse-width modulation electronic switch.