PT100080A - TIMED ENERGY SAVING - Google Patents

Abstract

Device for decreasing electrical power consumption in inductive or resistive loads and particularly for decreasing electrical power consumption in public lighting systems. Based on the elimination of the sinusoidal half-wave and on the continuity through the action of a fixed or variable resistor, the saver overcomes the disadvantages of present devices, may be used in any type of lamp or resistive or inductive load, has programmable timing, extends the life of lamps, may be connected to a lamp or to a group of lamps, its cost is low, saves power and its size is small. In one embodiment the invention provides an electrical diagram of a first embodiment of the timing and power saving device for discharge lamps (Hg steam, sodium steam, metallic steam, etc.) comprising an electronic timer 1, connected in parallel to a half-wave rectifying diode 2 and four fixed value resistors 3 arranged parallel therebetween and selectable by switches 4, all connected to a phase conductor 5, and in series with a resistive load 6, normally a lamp or a group of lamps which is arranged in parallel to a conductor 7, which is of neutral or of another phase. <IMAGE>

Description

-3-

The present invention relates to an electronic energy saving device, for use in lamps of all types, resistors or capacitive loads, by reducing the electric current of the loads at predetermined time intervals, programmed, through sinusoidal wave rectification timing and power reduction.

As is known to those skilled in the art of electrical and electronic installations, the reduction of electric current from the supply of light bulbs was initially achieved through the use of thermostats which reduce the light intensity by dissipating part of the current in a resistor and presenting drawbacks of not saving energy, generating undesirable heating and having no timing.

Later, the &quot; dimmers &quot; which reduce the luminous intensity of the lamp by reducing the power supply voltage and which have limitations of use, being only suitable for incandescent lamps and the inconveniences, are expensive and have no timing. The time-based energy saver object of the present invention has been developed to overcome the limitations and drawbacks of current systems since the device can be used in any type of lamp (mercury, incandescent, fluorescent, sodium vapor, multi-vapor , halogen, etc.) in resistive loads and, in capacitive loads, have programmable timing, being able to pre-establish the

decreases energy, provides longer life for reactors and lamps, can be connected to one or a group of lamps, is cheap, saves electricity, and is miniature. The present invention may be better understood in view of the attached drawings and their comments, whereby: FIG. 1 shows in electrical diagram of the device for timing and energy saving in discharge lamps (mercury vapor, steam etc.), which is constituted by an electronic timer (1) connected in parallel to the half-wave rectifier diode (2) and to four resistors (3) fixed and parallel to one another and selected by the switches (4) , all connected to the phase wire 5, in series with the resistive load 6, usually a lamp or group of lamps and in parallel with the neutral or other phase wire 7. FIG. 2 shows an electrical schematic of the device for timing and saving energy in inductive loads, which is constituted by an electronic timer (1) connected in parallel to the half-wave rectifier diode (2) and the variable resistance ( 8), all connected to the phase wire (5), and in series with the inductive load (9) and in parallel with the neutral or other phase wire (7). The operation of the energy-saving device of the present invention is based on the half-wave elimination by the diode (2) and continuity of interference by the resistors (3) or resistance 1

(8), causing the supply of electric current during the sinusoidal wave to be decreased and consequently the power of the resistive or inductive load is also decreased.

Therefore, for 50% of the time the electric current will be reduced to variable values, depending on the resistance (3) or (8), between 1 and 99% of normal.

When the timer (1) is switched off, the electric current passes through the diode (2) and the resistors (4) or (8).

When the timer 1 is switched on, the current is diverted from the diode 2 and the resistors 3 or 8 and will normally power the load 6 or 9.

The diodes (2) used may be negative or positive in color, and they should be evenly mixed in the devices to avoid unbalance of the electric power supply.

In the case of incandescent lamps and mixed lamps, there is no need to compensate for the rectified half-wave and consequently there is no need for the resistor (3) or (8), while the remainder of the configuration is maintained. -6- ι

After practical tests and comparing the yields with and without economizer, the following results are shown in Table (1).

Through the relationships shown in table (1), it is extrapolated the design for loads of different powers, such as discharge lamps for sodium, metal, steam, etc. The loss of energy by the use of resistors (4) or (8) is estimated at 5 to 17 W in the examples. The energy saving achieved by the device of the present invention is variable depending on the timer programming, for example a public road with lighting level X and operation lasting 10 hours a day, the consumption will be equivalent to 10n / day.

If we program the economizer to act after 5 hours of firing, limiting the load to 50% we will have 5h.x 5hJ / 2h.x = 7 1 / 2h.x, ie a saving of 25%.

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Lisbon, 31 January

J. PEREIRA DA CRUZ

Official Industrial Property Agent RUA VTCTOR C0RD0N, 10-A- £ .S 1200 USBOA

Claims (2)

A timer energy saver characterized in that it comprises an electronic timer (1), which is connected in parallel to a half-wave rectifier diode (2) and to a variable resistor (8) or to four resistors (3) fixed and parallel to each other and selected by the switches 4, all connected to phase wire 5, in series with the resistive load 6 or the inductive load 9 and in parallel with the neutral wire 7 or the other phase. The timed energy meter according to claim 1, characterized in that its operation is based on the elimination of half-wave by the diode (2) and continuity thereof by the actuation of the resistor (3) or the variable resistor (8). 3. A crimp time energy economizer according to claim 1, characterized in that the incandescent and mixed light bulbs do not require the use of the resistor (3) or the variable resistor (8). Lisbon, January 31, 1992 J. PEREIRA DA CRUZ Official Agent of Industrial Property RUA VtCTOR CORDON, 10 A 3. »1200 USBOA