CN2045549U

CN2045549U - Multipurpose power-saving service life prolonging device (1)

Info

Publication number: CN2045549U
Application number: CN 88213567
Authority: CN
Inventors: 孔令相; 杨桂华
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-08-31
Filing date: 1988-08-31
Publication date: 1989-10-04

Abstract

The utility model relates to a multipurpose power-saving and life-extending device, which is composed of a thermistor with negative temperature coefficient, a thermoswitch and a heater, etc. 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 normal use of the device and the complete appliance. The utility model has the advantages of low failure rate, energy saving, and extending the service life of the device and the complete appliance.

Description

Multipurpose power-saving service life prolonging device (1)

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, 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, heater current 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 cost height that has, the power consumption that has, the effect simple in structure that has is not ideal enough.What have has certain limitation, but generally speaking all is earlier with low-voltage power supply, then makes voltage rise to the formation that rated value is eliminated " overcurrent ".

Domestic patent No. 8500535, No. 85200465 etc. all is to adopt to have negative tempperature coefficient thermistor and 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 is 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, and the beginning thermistor that filament just has been in the thermal change process has just been fallen by short circuit.Do not reach energy-saving, service life prolonged positive effect.

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

The utility model description of drawings is as follows:

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

Fig. 2 is a structure principle chart of the present utility model.

Fig. 3 singly is used in to have the energy-conservation life extender front view of heater in the electric power loop.

Fig. 3 A is the end view of Fig. 3.

Fig. 4 singly is used in not have the energy-saving unit for prolongating service life of heater front view in the electric power loop.

Fig. 4 A is the end view of Fig. 4.

Fig. 5 is the distressed structure figure of Fig. 4.

Fig. 6 is the distressed structure figure of Fig. 3.Fig. 7 is the structure chart of heater.

Below in conjunction with description of drawings structure of the present utility model and operation principle:

As shown in Figure 1,6. 1. contact be serially connected in the electric power loop, and 1. contact is voltage input end, and 6. contact is power transformer primary electrical pressure side, thermistor 2. be serially connected in contact 1. 6. between, thermoswitch is 3. 2. in parallel with thermistor.In the moment of power-on, because 2. the thermistor with negative temperature coefficient that resistance is bigger at normal temperatures acts on, being added in primary voltage is about 160V for 70% of rated voltage (input voltage 220V) only, energising back thermistor temperature 2. raises gradually, resistance descends gradually, is added in primary voltage and raises gradually.When temperature rise to＞50 ℃ the time, primary voltage rises to about 90% (promptly being risen to about 200V by 160V) of rated voltage, thermoswitch this moment 3. closed (temperature of thermoswitch is transferred about 50 ℃), with 2. short circuit of thermistor, make primary voltage reach the impact that can not occur " overcurrent " in rated value (being normal working voltage 220V) so the electric power loop.

10. 9. contact be serially connected in the transformer secondary output filament loop, and 9. contact is the filament voltage input, and 10. contact is glower end, the thermistor with negative temperature coefficient 4. be connected on contact 9. 10. between.Thermistor resistance 4. is bigger at normal temperatures, and the voltage that is added on the filament is very low, and low-voltage is given filament pre-heating.In like manner after the energising, thermistor temperature 4. rises, and resistance descends, and filament resistance following temperature rising resistance increases, and the all-in resistance in the loop is in a basic balance, and promptly current in loop keeps steady relatively, thereby can not form " overcurrent " phenomenon.When 4. temperature rise of thermistor＞50 ℃, thermoswitch 5. closed (closed temperature is transferred about 50 ℃) with 4. short circuit of thermistor.Filament voltage rises to normal working voltage (being load voltage value).

From as can be known above-mentioned, bearing power is big in the loop, and then temperature increment on thermal resistor is fast.Thermoswitch closure fast, correspondingly thermistor is also fast by the time of short circuit, and the time of promptly inserting in the loop is short, and vice versa.Therefore the utility model can make the action time in the thermistor access loop, regulates automatically with the size of bearing power.

2. 4. respectively by thermoswitch 3. 5. after the short circuit, its temperature begins to descend thermistor, and this moment, 5. 3. thermoswitch had the possibility that disconnects again, 3. 5. remains closed for making thermoswitch, adopted heater 7..

8. 7. heater connect with normally closed thermoswitch, is connected on supply voltage 220V through contact (11), contact 1., thermistor 2., heater 7., thermoswitch 8., contact (11) forms the current supply circuit of heater.In the moment of energized,, about the very low about 160V of heater both end voltage 7., give 7. preheating of heater owing in the electric power loop thermistor existence is 2. arranged.During thermistor temperature rise＞50 2., energising back ℃, the 3. closed short circuit thermistor of thermoswitch 2. after, heater both end voltage 7. rises to 220V, heater begins normal heating, when 7. temperature rise of heater＞50 ℃, 5. 3. thermoswitch is remained closed simultaneously.Thereby after thermistor is by short circuit, though temperature decline, but still can keep short-circuit condition.When device or complete machine temperature (inner working temperature) rise to＞50 ℃ the time, 8. normally closed thermoswitch disconnects, 7. heater stops heating, meanwhile often driving thermoswitch 5. 3. remains closed, make thermistor be in short-circuit condition during operation all the time, and do not influence the operate as normal of device or complete machine.

As shown in Figure 2, all element is installed in a bakelite or the plastic casing (16), contact 1. 6. 9. 10. (11) be respectively lead contact, 8. an end of copper sheet (13) is welded together with bimetal leaf respectively at thermistor two ends 2., the other end of bimetal leaf and copper sheet keep certain clearance between (13), constitute often to drive thermoswitch 3..5. an end of copper sheet (12) is welded together with sheet metal respectively at thermistor two ends 4., and the other end of bimetal leaf and copper sheet keep certain clearance between (12), constitute often to drive thermoswitch 5..The size in gap is as the criterion with 50 ℃.This case thermistor is selected MFY for use ₁Type, power are 0.5-2W, and thermistor resistance 2. is 800-1200 Ω, 4. are 33-62 Ω.Matching principle is that the voltage high resistance is big, the voltage low resistance is little, 8. 5. 3. thermoswitch select 5J-18 type bimetal leaf for use, also can directly adopt a bimetal leaf bimetal leaf end and the heater end 7. 8. in the starter to be welded in jointly on the copper sheet (14), the other end of bimetal leaf keeps nature to contact with copper sheet (15), form normally closed thermoswitch 8. (temperature is transferred at 50 ℃), draw contact (11) on the copper sheet (15).The heater other end and contact 7. is 6. welded together.Heater structure such as accompanying drawing 7 7., adopt the outside wrapping layer 2-4 insulation low (20) of small-sized carbon resistance film RTX-0.125-33K Ω at resistance (21), and then put the heat dissipation metal pipe (19) of corresponding size, be installed in thermoswitch 3. 5. between, control thermoswitch simultaneously 3. 5..All after the welding well, mechanically insert in the bakelite housing.

In sum, the structure that the utility model adopted can be eliminated " overcurrent " in the electric power loop and can eliminate " overcurrent " in the filament loop again.When with picture tube being the black and white that constitutes of critical piece, color television set energy-saving unit for prolongating service life with filament loop, adopt the structure of Fig. 1 Fig. 2, eliminate " overcurrent " of electric power loop and filament loop respectively, constitute the TV set energy-saving life extender.

When only having electric power loop and filament loop is to adopt alternating current (AC) directly-powered oscilloscope to realize when energy-saving, service life prolonged, adopt the electric power loop structure among Fig. 1 Fig. 2, this moment, filament loop was inoperative, eliminated " 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 filament loop structure among Fig. 1, this moment, electric power loop was inoperative.Same " overcurrent " eliminated in the filament loop constitutes the electron tube energy-saving unit for prolongating service life.

For ease of installing, can be made into the version of Fig. 3 Fig. 3 A Fig. 6, in machine, there is fast heater element (as rectifying tube (electron tube), high power valve, high-power resistance etc.) to can be made into the easy structure form of Fig. 4 Fig. 4 A Fig. 5, and without heater.

So the utility model, of many uses, saves energy reduces failure rate, and increases the service life.

Claims

1, a kind ofly is used for oscillographic energy-saving unit for prolongating service life, comprise housing, be arranged in the thermistor that housing is serially connected in electric power loop with negative temperature coefficient, the thermistor (2) that it is characterized in that having negative temperature coefficient is serially connected on the copper sheet at housing (16) inner contact (1) (6) place that links to each other with electric power loop, often drives thermoswitch (3) and is connected in parallel on the thermistor (2).

2, oscilloscope energy-saving unit for prolongating service life according to claim 1, it is characterized in that the heater (7) and the thermoswitch (3) that are in series with normally closed thermoswitch (8) are installed together, the copper sheet at the other end of heater (7) and contact (6) place links, and the other end of thermoswitch (8) links to each other with the copper sheet at contact (11) place of electric power loop end.

3, a kind of energy-saving unit for prolongating service life that is used for electron tube, comprise housing, be positioned at the thermistor of housing, it is characterized in that thermistor (4) is serially connected on the copper sheet at housing (16) inner contact (9) (10) place that links to each other with filament loop, often drives thermoswitch (5) and is connected in parallel on the thermistor (4).

4, electron tube energy-saving unit for prolongating service life according to claim 3, it is characterized in that the heater (7) and the thermoswitch (5) that are in series with normally closed thermoswitch (8) are installed together, the other end of heater (7) by reconfiguration on the copper sheet at contact (6) place to the copper sheet at contact (1) place.

5, a kind of television set (black and white that is used for, colour) energy-saving unit for prolongating service life, comprise housing, be arranged in the thermistor that housing is serially connected in electric power loop, the thermistor (2) that it is characterized in that having negative temperature coefficient is serially connected on the copper sheet at contact (1) (6) place that links to each other with electric power loop in the housing, thermistor (4) is connected on contact (9) (10) the place copper sheet that links to each other with filament loop in the housing, often driving thermoswitch (3) (5) is connected in parallel on respectively on the thermistor (2) (4), and the heater (7) that normally closed thermoswitch (8) is in series is installed between the thermoswitch (3) (5), the other end of heater (7) links to each other with the copper sheet at contact (6) place, and the other end of thermoswitch (8) links to each other with the copper sheet at electric power loop tip node (11) place.

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

7,, it is characterized in that thermoswitch (3) (5) (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.

8,, it is characterized in that heater (7) is to be made by carbon resistance film RTX-0.125-33K according to claim 1,3,5 described energy-saving unit for prolongating service life.