CN1453554A

CN1453554A - Electrostatic inductor for refrigerator

Info

Publication number: CN1453554A
Application number: CN 02117177
Authority: CN
Inventors: 安雄燮
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2002-04-25
Filing date: 2002-04-25
Publication date: 2003-11-05
Anticipated expiration: 2022-04-25
Also published as: CN1222754C

Abstract

The electrostatic inducer for refrigerator includes AC power supply, transformer, pulse generator, microcomputer and semi-wave rectifier connected electrically. The transformer accepts AC voltage in the primary winding and transmits the voltage to the secondary winding with certain turn ratio to the primary winding; the semi-wave rectifier accepts the voltage from the transformer and outputs semi-wave rectified voltage to the pulse generator; the pulse generator produces semi-wave rectangular voltage signal after treatment; and the microcomputer accepts the semi-wave rectangular voltage signal and senses the existing static electricity via the time difference between the fall edge and the rise edge. It senses the static electricity via the semi-wave rectified voltage without error fast.

Description

Electrostatic inductor for refrigerator

Technical field

The present invention relates to the electrostatic inductor for refrigerator in a kind of mechanical engineering refrigeration or cooling field refrigerating machine, refrigeration plant or the system, particularly relate to a kind of electrostatic inductor for refrigerator that can make electrostatic induction zero defect ground respond to static rapidly.

Background technology

Existing traditional refrigerator generally is after the AC power full-wave rectification commonly used, and the direct current of its rectification is utilized as the refrigerator startup power supply.At this moment, utilize the direct current of above-mentioned full-wave rectification to produce pulse, microcomputer is responded to its pulse and is responded to static.

To have traditional electrostatic inductor for refrigerator with reference to the accompanying drawings now is illustrated.See also shown in Figure 1, it is the structured flowchart that has traditional electrostatic inductor for refrigerator now, as shown in the figure, it comprises: AC power commonly used, AC supply voltage is used in its elementary acceptance always, and being equivalent to the transformer 1 of the voltage of fixing turn ratio to its secondary mutual induction, acceptance is the full-wave rectifier 2 of full-wave rectification by the voltage of above-mentioned transformer 1 generation, accept the output signal of above-mentioned full-wave rectifier 2 and produce the pulse generator 3 of pulse, accept the pulse signal of above-mentioned pulse generator 3, have or not the microcomputer 4 of static to constitute by the decline of its pulse and the time difference induction of rising.

Now the working procedure with existing traditional electrostatic inductor for refrigerator of above-mentioned formation like this is described as follows:

At first, transformer 1 is by its elementary acceptance AC supply voltage commonly used, and the voltage that is equivalent to fixing turn ratio is magnetized to it secondary, and full-wave rectifier 2 is accepted to carry out the signal of output as Fig. 2 (a) after the full-wave rectification by the voltage that above-mentioned transformer 1 produces.

After this, the signal that pulse generator 3 is accepted as Fig. 2 (a) from above-mentioned full-wave rectifier 2, and necessarily handle the pulse of back generation as Fig. 2 (b).

So, microcomputer 4 is accepted the same pulse signal of Fig. 2 (b) of above-mentioned pulse generator 3, find the decline of its pulse after, when the time of finding rising surpasses certain hour, then respond to static.

See also shown in Figure 3, it is the circuit diagram that has traditional electrostatic inductor for refrigerator now, at this first NPN transistor Q1 the same rectified signal of Fig. 2 (a) is obtained assert in base stage, interval conducting more than 0.7V, base stage at the second NPN transistor Q2 is assert electronegative potential, close and assert high potentials for microcomputer 4 thereupon the second above-mentioned NPN transistor Q2, the interval first NPN transistor Q1 closes below 0.7V, assert high potential for the second NPN transistor Q2, the second above-mentioned thereupon NPN transistor Q2 conducting assert electronegative potential for microcomputer 4.

On the other hand, as shown in fig. 4, because the voltage of above-mentioned full-wave rectification is high more, the blanking time that descends and rise is short more, and institute is so that judgement has or not the microcomputer of static promptly to be easy to generate the induction mistake.

This shows that above-mentioned existing electrostatic inductor for refrigerator still has defective, and the assistant officer treats further to be improved.

Because the defective that above-mentioned existing electrostatic inductor for refrigerator exists, the inventor is actively studied innovation, through constantly studying, designing based on abundant practical experience and professional knowledge, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.

Summary of the invention

Technical problem underlying to be solved by this invention is, overcome the defective that existing electrostatic inductor for refrigerator exists, and a kind of new structure is provided the halfwave rectifier supply voltage can be provided, make the electrostatic inductor for refrigerator that exists the long period can respond to static at interval really between the rise and fall.

It is to adopt following technical scheme to realize that the present invention solves its technical problem underlying.A kind of electrostatic inductor for refrigerator according to the present invention's proposition, it comprises AC power commonly used, transformer, pulse generator and microcomputer, it is characterized in that it also comprises half-wave rectifier, wherein: above-mentioned AC power commonly used is electrically connected with transformer, this transformer is electrically connected with half-wave rectifier, this half-wave rectifier is electrically connected with pulse generator, this pulse generator is electrically connected with microcomputer again, wherein: this transformer, by its elementary acceptance AC supply voltage commonly used, and magnetize the voltage that is equivalent to fixing turn ratio to it secondary; This half-wave rectifier, it receives the voltage that is produced by transformer, and carries out importing the halfwave rectifier voltage signal to pulse generator after the halfwave rectifier; This pulse generator, it then produces half-wave rectangular voltage signal after this signal is necessarily handled; This microcomputer, it receives this half-wave rectangular voltage signal, and the time difference of decline and rising by its pulse, induction has or not static.

The present invention solves its technical problem and can also adopt following technical measures further to realize.

Aforesaid electrostatic inductor for refrigerator if wherein said microcomputer begins to surpass certain hour and do not find rising from the decline of finding pulse, can be responded to static.

The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, electrostatic inductor for refrigerator of the present invention, it comprises: commonly used AC power, its elementary AC supply voltage commonly used, and the voltage that is equivalent to fixing turn ratio magnetize to its secondary transformer, accept the voltage that produces by above-mentioned transformer and the half-wave rectifier of halfwave rectifier, accept above-mentioned half-wave rectifier output signal and the pulse generator of pulsing and accept the pulse signal of above-mentioned pulse generator and respond to the time difference of rising by the decline of its pulse and to have or not the microcomputer of static to be constituted.It with induction static, and can make the supply voltage halfwave rectifier electrostatic induction zero defect, and can respond to static rapidly.

In sum, the electrostatic inductor for refrigerator of special construction of the present invention has the halfwave rectifier supply voltage, makes the interval that has the long period between the rise and fall, and induction static that can be certain.No matter it structurally or bigger improvement all arranged on the function, have large improvement technically, and produced handy and practical effect, and has the effect of enhancement really, thereby be suitable for practicality more, and not seeing in like product has similar structural design to publish or use, and really is a new and innovative, progressive, practical new design.

Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.

The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.

Description of drawings

Fig. 1 is the structured flowchart schematic diagram that has traditional electrostatic inductor for refrigerator now.

Fig. 2 is the time synchronized figure among Fig. 1.

Fig. 3 is the circuit diagram that has traditional electrostatic inductor for refrigerator now.

Fig. 4 is the oscillogram of the full wave rectified signal when supply voltage is high among Fig. 1.

Fig. 5 is the structured flowchart schematic diagram of electrostatic inductor for refrigerator of the present invention.

Fig. 6 is the time synchronized figure among Fig. 5.

Fig. 7 is the circuit diagram of electrostatic inductor for refrigerator of the present invention.

Fig. 8 is an oscillogram of responding to static among Fig. 5 with pulse signal.

1 transformer, 2 full-wave rectifiers

3 pulse generators, 4 microcomputers

10 half-wave rectifier D5 diodes

The Q1 first NPN transistor Q2 second NPN transistor

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of electrostatic inductor for refrigerator, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.

See also Fig. 1 to shown in Figure 4, existing traditional electrostatic inductor for refrigerator is specified in its circuit formation and the working condition background technology in front, so repeat no more.

Below with reference to Fig. 5 and Fig. 6, the effect and the effect of electrostatic inductor for refrigerator of the present invention described in detail.

At first see also shown in Figure 5, electrostatic inductor for refrigerator of the present invention, it comprises: AC power commonly used, AC supply voltage is used in its elementary acceptance always, and the voltage that is equivalent to fixing turn ratio magnetized to its secondary transformer 1, acceptance is the half-wave rectifier 10 of halfwave rectifier by the voltage of above-mentioned transformer 1 generation, accept the output signal of above-mentioned half-wave rectifier 10 and produce the pulse generator 3 of pulse, and the pulse signal of accepting above-mentioned pulse generator 3, and have or not the microcomputer 4 of static to constitute by the decline of its pulse and the time difference induction of rising.

See also Fig. 5, shown in Figure 6, below specify the structure of electrostatic inductor for refrigerator of the present invention as follows in order:

At first, transformer 1 is by its elementary acceptance AC supply voltage commonly used, the voltage that is equivalent to fixing turn ratio magnetized to it secondary, and half-wave rectifier 10 is accepted to carry out exporting after the halfwave rectifier signal as Fig. 6 (a) by the voltage that above-mentioned transformer 1 produces.

After this, pulse generator 3 is necessarily handled the back and is produced the same pulse of Fig. 6 (b) from the same signal of above-mentioned half-wave rectifier 10 acceptance patterns 6 (a).

So, 4 of microcomputers are accepted the same pulse signal of Fig. 6 (b) of above-mentioned pulse generators 3, find the decline of its pulse after, when the time of finding rising surpasses certain hour, respond to static.

Promptly as shown in Figure 8, after microcomputer 4 is checked out the decline of pulse signal, if it is normal with regard to induction power supply to find rising within a certain period of time, check out the decline of pulse signal on the contrary after, find rising if surpass certain hour, promptly respond to static state.

See also shown in Figure 7, it is the circuit diagram that constitutes electrostatic inductor for refrigerator of the present invention, they are different with existing traditional electrostatic inductor for refrigerator, the voltage that is produced by transformer 1 produces rectified signal as Fig. 6 (a) by diode D5 halfwave rectifier, the first NPN transistor Q1 this moment rectified signal that Fig. 6 (a) is the same obtains assert interval conducting more than 0.7V in base stage, base stage at the second NPN transistor Q2 is assert current potential, close and assert current potentials for microcomputer 4 thereupon the above-mentioned second NPN transistor Q2, the interval first NPN transistor Q1 closes below 0.7V, assert current potential for the second NPN transistor Q2, the above-mentioned thereupon second NPN transistor Q2 conducting assert current potential for microcomputer 4.

Thereupon by the pulse signal of above-mentioned pulse generator 3 outputs, resemble Fig. 6 (b) be shown in descend and rising between leave certain intervals and export.

The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention above any simple modification, equivalent variations and modification that embodiment did.

Claims

1, a kind of electrostatic inductor for refrigerator comprises AC power commonly used, transformer (1), pulse generator (3) and microcomputer (4), it is characterized in that it also comprises half-wave rectifier (10), wherein:

Above-mentioned AC power commonly used is electrically connected with transformer (1), and this transformer (1) is electrically connected with half-wave rectifier (10), and half-wave rectifier (10) is electrically connected with pulse generator (3), and pulse generator (3) is electrically connected with microcomputer (4) again, wherein:

This transformer (1) by its elementary acceptance AC supply voltage commonly used, magnetizes the voltage that is equivalent to fixing turn ratio to it secondary;

This half-wave rectifier (10), it receives the voltage that is produced by transformer (1), and carries out importing the halfwave rectifier voltage signal to pulse generator (3) after the halfwave rectifier;

This pulse generator (3), it is necessarily handled the back with this signal and produces half-wave rectangular voltage signal;

This microcomputer (4), it receives this half-wave rectangular voltage signal, and the time difference of decline and rising by its pulse, induction has or not static.

2, electrostatic inductor for refrigerator according to claim 1 begins to surpass certain hour and does not find rising from the decline of finding pulse if it is characterized in that described microcomputer, promptly responds to static.