CN201248170Y - Illumination electricity-saving device - Google Patents

Abstract

The utility model relates to a lighting energy-saving appliance, which is an energy-saving device for lighting fixtures, and belongs to the technical field of electric appliances. The entire circuit of the lighting saver includes a control circuit, a contactor and a transformer. The control circuit is electrically connected to the contactor and the transformer, and the control circuit controls the contactor to connect or disconnect the transformer from the circuit. The lighting power saver can adjust the output voltage of the circuit by controlling the working state of the transformer.

Description

A Lighting Saver

technical field

The utility model relates to a lighting energy-saving appliance, which is an energy-saving device for lighting fixtures, and belongs to the technical field of electric appliances.

Background technique

The voltage is generally low during the peak period of electricity consumption, and the voltage is generally high at night, especially the voltage of the lamps is mostly high, especially in some factories and mines, often as high as 230V or more, which not only wastes energy but also shortens the life of the lamps, as shown in the figure As shown in 1, when the voltage exceeds a certain value, although the illuminance of the lamp is getting better and better, the service life is getting shorter and shorter. As shown in the table below, comparing the voltage, life, illuminance and evaluation of the lamps, it can be seen that when the voltage reaches 90% of the rated value, the lamps are in the best condition. At present, the autotransformer T is often used for step-down processing, but there is a problem that the working state of the transformer T cannot be controlled according to the change and fluctuation of the voltage, so as to adjust the output value of the voltage.

Voltage 80% 90% 100% 110% life 0.8 2 1 0.5 Illumination 87% 93% 100% 110% evaluate Difference most good the worst

Contents of the invention

The technical problem to be solved by the utility model is to provide a lighting power saver, which can adjust the output voltage of the circuit by controlling the working state of the transformer.

The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a lighting power saver, the whole circuit of which includes a control circuit, a contactor and a transformer, the control circuit is electrically connected with a contactor and a transformer, and the control circuit controls the contactor to make The transformer is connected or disconnected from the circuit. By adopting the utility model, the working state of the transformer can be controlled through the control circuit, so as to adjust the output voltage of the circuit.

On the basis of the above-mentioned technical scheme, the utility model has also made the following improvements:

Further, one end of the low-voltage winding of the transformer is electrically connected to the input end of the entire circuit, and the other end is electrically connected to the output end of the entire circuit; several contacts are provided on the high-voltage winding of the transformer, and one end of the high-voltage winding is electrically connected to the input end of the entire circuit. The other end is electrically connected to the contactor through the selector switch, and the selector switch can be electrically connected to different contacts on the high voltage winding of the transformer.

Further, the high-voltage winding of the transformer is provided with four contacts, and the corresponding voltage adjustment rates of the four contacts are 7%, 9%, 11%, and 13%.

The beneficial effect of adopting the above further solution is that the voltage adjustment rate can be manually adjusted by operating the selection switch according to the input voltage of the entire circuit and the current working condition to meet the needs.

Further, the transformer is also provided with a temperature control switch, the temperature control switch is usually closed, when the temperature of the transformer is higher than the limit value, the temperature control switch is disconnected, and the two ends of the temperature control switch are electrically connected to the control circuit .

Further, the temperature limit value of the transformer is 105°C±1°C.

The beneficial effect of adopting the above further solution is to monitor the temperature of the transformer to protect the transformer.

Further, the control circuit includes a detection circuit, a delay circuit, a digital processing circuit, a relay circuit, a digital display circuit and a high temperature alarm circuit:

Detection circuit, detection circuit voltage value and current value;

Delay circuit, monitor the current voltage value, current value, temperature control switch, judge whether to enter the power-saving state, and send a signal to the relay circuit after preheating;

The digital processing circuit calculates the power and power-saving rate according to the detected voltage value and current value;

The relay circuit controls the working state of the contactor according to the signal sent by the delay circuit;

Digital display circuit, display circuit voltage, power-saving voltage, current, power-saving current, delay time, low-voltage protection limit, power-saving rate information;

In the high temperature alarm circuit, when the temperature switch of the transformer is disconnected, the power supply circuit of the relay circuit is cut off, the transformer is disconnected from the whole circuit through the contactor, and an alarm fault prompt is issued.

Further, a fuse is electrically connected to the control circuit, and the fuse is blown when the circuit current is too high.

Further, the control circuit also includes a fuse alarm circuit, which cuts off the power supply circuit of the relay circuit when the circuit current is too high and the fuse of the fuse is blown, disconnects the transformer from the entire circuit through the contactor, and issues an alarm fault prompt.

Further, the contactor is provided with two reciprocal contacts, the first contact is a normally closed contact, one end of which is electrically connected to the input end of the entire circuit, and the other end is electrically connected to the output end of the entire circuit; the second contact is a normally open contact A contact, one end of which is electrically connected to the selection switch of the transformer, and the other end is electrically connected to the output end of the entire circuit.

The beneficial effect of adopting the above further solution is that the connection and disconnection of the transformer and the whole circuit can be realized through the connection and disconnection of different contacts of the contactor.

Description of drawings

Figure 1 shows the relationship between voltage, life and illuminance of lamps;

Fig. 2 is the utility model circuit diagram;

Detailed ways

The principles and features of the present utility model are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the utility model, and are not used to limit the scope of the utility model.

As shown in Figure 2, it is the circuit diagram of the utility model lighting power saver, which is composed of a control circuit RP, a contactor KM and a transformer T. The control circuit RP includes a detection circuit, a delay circuit, a fuse alarm circuit, a digital processing circuit, Relay circuit and digital display circuit. A fuse is also electrically connected to the control circuit, and the fuse of the fuse is blown when the current in the circuit is too high. The detection circuit of the control circuit detects the voltage value and current value of the circuit through the voltage transformer, current transformer TA and other circuits; the delay circuit monitors the current voltage value, current value, and temperature control switch to determine whether to enter the power-saving state , send a signal to the relay circuit after preheating, and the time set in the preheating stage is 5S; the digital processing circuit calculates the power and power saving rate according to the detected voltage value and current value; the relay circuit sends a signal according to the delay circuit The signal is used to carry out the relay action, thereby changing the state of the contactor coil, and realizing the conversion of the contactor's closed and disconnected states; the digital display circuit displays the circuit voltage, power-saving voltage, current, power-saving current, and time delay through the liquid crystal display Relevant information such as time, low-voltage protection limit, power-saving rate, etc.; high-temperature alarm circuit, when the temperature switch of the transformer is disconnected, cut off the power supply circuit of the relay circuit, disconnect the transformer from the entire circuit through the contactor, and issue an alarm fault prompt ; Fuse alarm circuit, when the circuit current is too high and the fuse of the fuse is blown, the power supply circuit of the relay circuit is cut off, the transformer is disconnected from the entire circuit through the contactor, and an alarm fault prompt is issued.

The contactor KM has two reciprocal contacts KM-1 and KM-2. One end of the contact KM-1 is electrically connected to the input end of the entire circuit, and the other end is electrically connected to the output end of the entire circuit; one end of the contact KM-2 is electrically connected to the output end of the entire circuit. The transformer T is electrically connected, and the other end is electrically connected to the output end of the whole circuit.

One end of the low-voltage winding of the transformer T is electrically connected to the input end of the entire circuit, and the other end is electrically connected to the output end of the circuit; there are several contacts on the high-voltage winding of the transformer T, and one end of the high-voltage winding is electrically connected to the input end of the entire circuit. One end is electrically connected to one end of the contact KM-2 of the contactor KM through the selection switch SK, through which the selection switch SK can select different contact points of the electrical connection input end to select a preset voltage adjustment rate. The selector switch SK is provided with four gears, which respectively correspond to preset voltage adjustment ratios, which are step-down 7%, 9%, 11%, and 13%. The temperature control switch S is also provided on the transformer T, and the temperature control switch S is usually closed. When the temperature of the transformer T is higher than the limit value, the temperature control switch S is turned off, and the set temperature limit value is 105 degrees Celsius. Both ends S1 and S2 of the temperature control switch S are electrically connected to the control circuit RP, respectively.

When the lighting saver is working, the control circuit RP first judges whether to enter the power-saving state through the delay circuit according to the current voltage value. The control circuit RP controls the contact KM-1 of the contactor KM to be turned on and the contact KM-2 to be turned off, and the circuit is directly connected to the user load without passing through the transformer T. When the voltage at the input terminal of the circuit exceeds the set voltage value, the delay circuit preheats for 5 seconds and sends a signal to the relay circuit, the relay circuit controls the contact KM-1 of the contactor KM to be disconnected, and the contact KM-2 is connected to enter Energy-saving state, the circuit passes through the transformer T, and the current circuit voltage, power-saving voltage, current, power-saving current, delay time, low-voltage protection limit, and power-saving rate are calculated and displayed according to the digital processing circuit and digital display circuit of the control circuit RP and other relevant information, manually operate the selection switch SK, select the appropriate gear, and then connect to the user load after stepping down. When the temperature in the transformer T is too high, the temperature control switch S is disconnected. At this time, the high temperature alarm circuit of the control circuit RP will cut off the power supply circuit of the relay circuit, and the transformer will be disconnected from the entire circuit through the contactor, and an alarm fault prompt will be issued. When the current in the circuit is too high, the fuse of the fuse connected to the control circuit RP will blow, and the fuse alarm circuit of the control circuit RP will cut off the power supply circuit of the relay circuit, and the transformer will be disconnected from the whole circuit through the contactor. , and issue an alarm fault prompt. If the user does not need to save power, he can press the manual bypass self-locking button to forcibly enter the non-power-saving state, and if the self-locking button is pressed, it will enter the bypass state. The low-voltage protection limit set by this device is 200V, the delay time is 5S, and the temperature limit value of the transformer is 105°C. All set values can also be changed according to user needs.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (9)

1. lighting electricity saving device, its entire circuit comprises control circuit, contactor and transformer, it is characterized in that: be electrically connected with contactor and transformer on the described control circuit, control circuit is switched on or switched off transformer and circuit by control contactor.

2. lighting electricity saving device according to claim 1 is characterized in that: an end of described transformer low voltage winding is electrically connected with the input of entire circuit, and the other end is electrically connected with the entire circuit output; The transformer high-voltage winding is provided with several contacts, and an end of high pressure winding is electrically connected with the input of entire circuit, and the other end is electrically connected with contactor by selector switch, and selector switch can be electrically connected with the different contacts on the transformer high-voltage winding.

3. lighting electricity saving device according to claim 2 is characterized in that: described transformer high-voltage winding is provided with four contacts, and the voltage regulation of four contact correspondences is step-down 7%, 9%, 11%, 13%.

4. according to claim 2 or 3 described lighting electricity saving devices, it is characterized in that: also be provided with temperature detect switch (TDS) on the described transformer, described temperature detect switch (TDS) is generally closure state, temperature detect switch (TDS) disconnects when the transformer temperature is equal to or higher than limit value, the two ends of described temperature detect switch (TDS) are electrically connected with control circuit, controller is controlled according to this signal, and contactor is disconnected.

5. lighting electricity saving device according to claim 4 is characterized in that: the temperature limit definite value of described transformer is 105 ℃ ± 1 ℃.

6. lighting electricity saving device according to claim 4 is characterized in that: described control circuit comprises testing circuit, delay circuit, digital processing circuit, relay circuit, digital display circuit and high temperature alarm circuit:

Testing circuit, testing circuit magnitude of voltage and current value;

Delay circuit is monitored current magnitude of voltage, current value, temperature detect switch (TDS) situation, judges whether to enter electricity-saving state, sends signal through after the preheating to relay circuit;

Digital processing circuit comes rated output and power saving rate according to detected magnitude of voltage, current value;

Relay circuit, the operating state that the signal that sends according to delay circuit comes control contactor;

Digital display circuit, the information of display circuit voltage, economize on electricity voltage, electric current, economize on electricity electric current, delay time, low-voltage variation limit value, power saving rate;

High temperature alarm circuit, when the temperature switch of transformer disconnected, the current supply circuit of block system relay circuit disconnected transformer and entire circuit by contactor, and sends the alarm failure prompting.

7. lighting electricity saving device according to claim 6 is characterized in that: be electrically connected with fuse on the described control circuit, the blown fuse of fuse when circuital current is too high.

8. lighting electricity saving device according to claim 7, it is characterized in that: described control circuit also comprises the fuse alarm circuit, when circuital current is too high when causing the blown fuse of fuse, the current supply circuit of block system relay circuit, by contactor transformer and entire circuit are disconnected, and send the alarm failure prompting.

9. lighting electricity saving device according to claim 4 is characterized in that: described contactor is provided with two reciprocal contacts, and contact one is a normally-closed contact, and the one end is electrically connected with the entire circuit input, and the other end is electrically connected with the entire circuit output; Contact two is a normally opened contact, and the one end is electrically connected with described selection of Transformers switch, and the other end is electrically connected with the output of entire circuit.

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