CN2045550U - Multipurpose power-saving service life prolonging device (2) - Google Patents

Abstract

The utility model relates to a multipurpose energy-saving and life-extending device, which is composed of a thermistor with negative temperature coefficient, a thermoswitch and a relay. Connected in the power source loop and the filament loop, the device can eliminate the impact of the over-current formed at the moment of powering on and protect the components of the complete appliance, particularly the vacuum devices with filaments such as picture tube, oscilloscope tube and electron tube, etc. The utility model has the advantages of energy saving, low failure rate and long service life.

Description

Multipurpose power-saving service life prolonging device (2)

The utility model relates to a kind of multiduty energy-saving unit for prolongating service life.

In the power supply of television set (black and white, colour) and the filament loop of picture tube, all exist the impact of " overcurrent ".With regard to filament, the resistance after the energising (hot resistance) is much larger than the preceding resistance (cold-state resistance) of energising.In the moment that begins to switch on, filament is subjected to the impact of " overcurrent " bigger several times-tens times than rated current, and television set and picture tube were often damaged in the moment that begins to switch on.In order to eliminate the impact of " overcurrent ", existing both at home and abroad many dissimilar patents, the complex structure that has, the cost height, the power consumption that has, the effect simple in structure that has is not ideal enough, and what have has certain limitation.But generally speaking all be first, then make voltage rise to the formation that rated value is eliminated " overcurrent " with low-voltage power supply.

Domestic patent No. 8500535, No. 85200465 etc. is to adopt the thermistor with negative temperature coefficient to be connected in the electric power loop, in the process of power-on switch, utilize the method for machinery, at first thermistor is sealed in the loop, then again the thermistor short circuit is fallen, make circuit enter normal operating conditions, realize eliminating the impact of " overcurrent ".This method, the high power device of the thermal change process fast (by cold conditions heating attitude) of filament has certain effect for switching on afterwards.For slow devices of thermal change process such as low power incandescent lamp bulb, picture tube, oscilloscope tube, electron tubes, has tangible deficiency.Because the time of power-on switching process, be quite of short duration, about several seconds zero point, and several seconds zero point of thermal change process need of filament was to tens seconds time, it is too short that thermistor inserts the time in loop, the beginning thermistor that filament just has been in the thermal change process has just been fallen by short circuit, does not reach the positive effect of elimination " overcurrent ".

The purpose of this utility model is a kind of energy-saving unit for prolongating service life, and it can be used on the television set, can make the action time in the thermistor access loop.Automatically regulate with watt level, big time of power is short, and is long between power hour, makes thermistor can play to mend fully in the loop and taste effect, obtains the positive effect of elimination " overcurrent ".

The utility model description of drawings is as follows:

Accompanying drawing 1 is a circuit working schematic diagram of the present utility model.

Accompanying drawing 2 is structure principle charts of the present utility model.

Accompanying drawing 2A is the end view of Fig. 2.

Structure of the present utility model and operation principle are described below with reference to the accompanying drawings:

As shown in Figure 1, contact (1) (5) is serially connected in the electric power loop, and contact (1) is a voltage input end, and contact (5) connects the primary electrical pressure side of power transformer, thermistor (2) is serially connected between contact (1) (5), and it is in parallel with thermistor (2) often to drive thermoswitch (3).When the moment of power-on switch, because the effect of thermistor, be added in the primary voltage of power transformer, it only is about 70% of rated voltage (input voltage 220V), be about 160V, the temperature that has the thermistor (2) of negative temperature coefficient after the energising raises gradually, when temperature rises to 50 ℃ of left and right sides, primary voltage rises to about 90% of rated voltage, promptly rise to about 200V by 160V, thermoswitch this moment (3) closed (closed temperature of thermoswitch (3) is transferred about 50 ℃) is with thermistor (2) short circuit, and this moment, the primary voltage of power transformer reached rated value (being normal working voltage 220V).Therefore " overcurrent " can not appear in the electric power loop.

Contact (9) (10) is serially connected in the filament loop, and contact (9) is a voltage input end, and contact (10) is a glower end, and thermistor (4) is serially connected between contact (9) (10), and it is in parallel with thermistor (4) often to drive thermoswitch (13).The resistance of thermistor under the normal temperature (4) is bigger, thereby the voltage that is added on the filament is very low, and low-voltage makes filament pre-heating.The temperature of energising back thermistor (4) rises, and resistance descends.Filament resistance increases with temperature rising resistance.All-in resistance is in a basic balance in the loop, promptly current in loop keep relative steadily.Thereby can not form " overcurrent " phenomenon.When thermistor (4) temperature rise＞50 ℃, thermoswitch (13) (its closed temperature is transferred at 50 ℃) closure, with thermistor (4) short circuit, filament voltage rises to normal working voltage (being rated value).

From as can be known above-mentioned, bearing power is big in the loop, the thermistor immersion heater, thermoswitch closure fast, correspondingly the time of short circuit thermistor also fast, vice versa, therefore the utility model can make the action time in the thermistor access loop, regulates automatically with the size of bearing power.

After thermistor (2) (4) was respectively by thermoswitch (3) (13) short circuit, its temperature began to descend, and thermoswitch (3) this moment (13) has the possibility that disconnects again, remains closed for making thermoswitch (3) (13), adopts relay (6).

The two ends (15) (16) of relay (6) actuating coil form series loop with thermoswitch (8), voltage selecting resistance (7), be connected on by contact (11) (12) (transformer-secondary voltage and relay (6) operating voltage can be matched by apolegamy resistance (7) not simultaneously) on the secondary low-voltage of power transformer.

In the moment of power-on, the existence of thermistor (2) is arranged in the electric power loop, the primary voltage that is added in power transformer very low (about about 160V), correspondingly secondary voltage is also very low, do not reach the operating voltage of relay, relay is not worked, after the energising, when thermistor (2) temperature rise＞50 ℃, thermoswitch (3) closure, behind the short circuit thermistor (2), primary voltage rises to normal value (being rated value 220V) secondary low-voltage and also rises to rated value, relay (6) adhesive, it is the contact AB short circuit thermistor (2) of relay (6), DE short circuit thermistor (4), replaced thermoswitch (3) (13), thereby after the thermistor short circuit, can keep short-circuit condition though temperature descends, when the working temperature of device or complete machine rises＞50 ℃ the time, thermoswitch (3) (13) remains closed, normally closed thermoswitch (8) disconnects, relay (6) opens circuit and quits work, and relay tip resets, and thermoswitch makes thermistor (2) (4) be in short-circuit condition during operation all the time, and do not influence the operate as normal of device and complete machine, reduced the power consumption of relay again.

Shown in Fig. 2 Fig. 2 A, all element is installed on the miniature printed circuit board (14), contact (1) (5) (9) (10) (11) (12) is respectively on the copper sheet lead-out wire that is welded on the circuit board (14), thermistor (2) (4) is welded on respectively on the copper sheet of printed circuit board (PCB) (14) (being the copper sheet at contact (1) (10) place), and its model can be selected for use arbitrarily.MFY is selected in this case for use ₁Type button-type thermistor, power is that 0.5W is to 2W, the resistance of thermistor (2) is 800-1200 Ω, the resistance of thermistor (4) is that 33-62 Ω matching principle is that the voltage high resistance is big, the voltage low resistance is little, thermoswitch (3) (13) (8) is to adopt 5J-18 type bimetal leaf or directly adopt bimetal leaf in the starter, one end of thermoswitch (3) (13) bimetal leaf is welded on respectively on the thermistor (2) (4), the other end and printed circuit board (PCB) copper sheet (contact (1) (10) place copper sheet) keep certain interval (promptly often opening), bimetal leaf one end of thermoswitch (8) is welded on the printed circuit board (PCB) copper sheet (18), and the other end and printed circuit board (PCB) copper sheet (contact (12) copper sheet of living in) keep nature to contact (promptly normally closed) relay (6) selecting JRC or JRX-9(or other model for use) midget relay.Shape by its contact pin is fixed on it in the back side perforating and the welding of printed circuit board (PCB) (14).Contact C, F pin are vacant on circuit board (14), the pin of contact E, D, A, B is beaten respectively on the copper sheet at corresponding contact (1) (5) (9) (10) place, and the pin of the actuating coil (15) (16) of relay (6) is welded in respectively on the copper sheet of copper sheet (1) contact (11) place.Adopt the relay working voltage apolegamy resistance (7) of RTX or RJ to insert from the back side punching of printed circuit board (PCB) (14), its two ends lead-in wire is welded in respectively on the printed circuit board (PCB) (17) (18), (19) be the printed circuit board (PCB) fixing hole, contact (1) (5) is serially connected in the electric power loop, contact (9) (10) is serially connected in the filament loop, and contact (11) (12) is connected on the secondary low-voltage of power transformer.

Comprehensively above-mentioned, the structure that the utility model adopted can be eliminated formed in the electric power loop " overcurrent ", can eliminate " overcurrent " in the filament loop again.When with picture tube being television set (black and white, the colour) energy-saving unit for prolongating service life of critical piece formation with filament loop, adopt the structure of Fig. 1 Fig. 2, eliminate electric power loop respectively, " overcurrent " of filament loop constitutes television set (black and white, colour) energy-saving unit for prolongating service life.When the oscilloscope that only has electric power loop (or filament loop directly adopts Alternating Current Power Supply) reaches energy-saving, service life prolonged, adopt the structure of electric power loop among Fig. 1, contact A, B, the C of relay this moment (6) work, and D, the E of relay (6), F contact and filament loop are inoperative.Eliminate " overcurrent " in the electric power loop equally, constituted the oscilloscope energy-saving unit for prolongating service life.When electron tube with filament loop, when only needing to eliminate " overcurrent " in the filament loop, adopt the filament loop structure among Fig. 1, contact D, E, the F of relay this moment (6) work, and contact A, B, C are inoperative, constitute the electron tube energy-saving unit for prolongating service life.

Therefore of many uses, the saves energy of the utility model and prolong device and the useful life of complete machine has reduced failure rate.

Claims (6)

1, a kind ofly be used for oscillographic energy-saving unit for prolongating service life, comprise printed circuit board (PCB), be installed in the thermistor in the electric power loop of being serially connected on the circuit board, it is characterized in that thermistor (2) is serially connected on contact (1) (5) the place copper sheet that links to each other with electric power loop, often driving thermoswitch (3) is connected in parallel on the thermistor (2), the copper sheet at contact (16) place that (15) end of the relay (6) that is connected in series mutually with normally closed thermoswitch (8) and voltage selecting resistance (7) links to each other with the power transformer secondary voltage is continuous, the copper sheet at contact (11) place that secondary voltage links to each other links to each other the D of relay (6) with thermoswitch (8), E contact and thermistor (2) are in parallel.

2, a kind of energy-saving unit for prolongating service life that is used for electron tube, comprise printed circuit board (PCB), be installed in the thermistor in the filament loop of being serially connected on the circuit board, it is characterized in that being that thermistor (4) is serially connected on continuous contact (9) (10) the place copper sheet of filament loop, often driving thermoswitch (13) is connected in parallel on the thermistor (4), the copper sheet at contact (16) place that (15) end of the relay (6) that is in series with normally closed thermoswitch (8) and voltage selecting resistance (7) links to each other with transformer-secondary voltage is continuous, contact (11) the place copper sheet that secondary voltage links to each other links to each other the A of relay (6) with thermoswitch (8), B contact and thermistor are in parallel.

3, a kind of energy-saving unit for prolongating service life that is used for television set, comprise printed circuit board (PCB), be installed in the thermistor in the electric power loop of being serially connected on the printed circuit board (PCB), the thermistor (2) that it is characterized in that having negative temperature coefficient is serially connected on printed circuit board (PCB) (1) (5) contact that links to each other with electric power loop, thermistor (4) is serially connected on the printed circuit board (PCB) contact (9) (10) that links to each other with filament loop, often driving thermoswitch (3) (13) is attempted by respectively on the thermistor (2) (4), be positioned at the contact A of relay on the printed circuit board (PCB) (6), B, D, E is in parallel with thermistor (2) (4) respectively, and (15) end of relay (6) is in series with thermoswitch (8) and the relay voltage selecting resistance (7) on the printed circuit board (PCB).Be connected on the contact (11) that is connected with transformer-secondary voltage, (16) of relay (6) end directly is connected on the contact (12) that links to each other with transformer-secondary voltage, and contact (11) (12) is connected in parallel on the secondary voltage.

4,, it is characterized in that thermoswitch (3) (13) (8) is to be made by 5J-18 type bimetal leaf according to claim 1,2,3 described energy-saving unit for prolongating service life.

5, according to claim 1,2,3 described energy-saving unit for prolongating service life, the resistance that it is characterized in that thermistor (2) is 800-1200 Ω, and (4) are 33-62 Ω.

6,, it is characterized in that relay (6) is JRX-9 or JRC type according to claim 1,2,3 described energy-saving unit for prolongating service life.

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