CN1181492A

CN1181492A - Method and apparatus for controlling light-up of fluorescent lamp for refrigerator

Info

Publication number: CN1181492A
Application number: CN97104229A
Authority: CN
Inventors: 昔镇五
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 1996-05-11
Filing date: 1997-05-09
Publication date: 1998-05-13
Also published as: KR100190130B1; JPH1062061A; KR970075798A; JP2831630B2

Abstract

A lightening control method and a device of a fluorescent lamp which is used in a refrigerator are provided. The fluorescent lamp is lightened by a starter and a stabilizer is provided. If a door is opened and closed for a plurality of times in short period of time, the fluorescent lamp is not closed but kept at the lighting state when the door is opened and closed. Therefore, the service life of the fluorescent lamp can be prevented from being shortened caused by the frequent lightening operation within short period of time. And the poor lightening operation caused by the leakage current can also be avoided, which leads to that users can feel the comfort and the high reliability for using the refrigerator.

Description

Be used to control the method and apparatus of lighting of the fluorescent lamp of refrigerator

The present invention relates to a kind of Push And Release (promptly lighting) method of operating and device of controlling fluorescent lamp.

An electric light that is opened according to the unlatching of refrigerator doors is installed in the refrigerator.The main incandescent lamp that uses in the refrigerator, this is that the time of lighting of incandescent lamp is fast owing to compare with fluorescent lamp.When opening fluorescent lamp, need about 1 second time preheat fluorescent lamp.In addition, scintillation taking place also, is lighted up hill and dale up to this fluorescent lamp.Owing to these reasons, although in as the lighting device in the general family room, do not carry out big number of times light operation the time fluorescent lamp can not produce very big inconvenience, but having known, we should not in such as the housed device of the refrigerator of frequent opening and closing, use this fluorescent lamp

A trend of using big volume of passenger traffic refrigerator takes place at present, wherein uses fluorescent lamp.The efficient of fluorescent lamp is than incandescent lamp height aspect energy consumption, and the former is 1/3 to 1/4 times of the latter.Also have, fluorescent lamp has luminous soft, heat radiation is little, the life-span is long advantage (life-span of fluorescent lamp is 5 to 10 times of incandescent lamp).Therefore in large-capacity refrigerator, be suitable for using fluorescent lamp.

The practical application fluorescent lamp also has some problems in the refrigerator, because be used in the condition that fluorescent lamp in the refrigerator has the uniqueness different with being used in indoor fluorescent lamp.The life-span of fluorescent lamp is subjected to the having a strong impact on of frequency of electric bright operation and greatly shortens.We know, and according to the conclusion of investigation, once light operation whenever carrying out, and the life-span of fluorescent lamp just shortens 2 to 3 hours, and usually, indoor fluorescent lamp every day, switch was several times at the most.But the number of times of lighting operation of the fluorescent lamp in the refrigerator be room fluorescent lights tens of time doubly, this is because the door of refrigerator switch continually.

Have, when door was opened, warm air entered in the refrigerator again, and it makes the outer surface of fluorescent lamp produce water smoke.These water smokes can cause that the quality of lighting operation of fluorescent lamp reduces.Air in the refrigerator cools off a preset time makes the water smoke on fluorescent lamp surface disappear later on, therefore can not influence once more and light operation.If before water smoke disappears, open refrigerator doors since water smoke former thus in initial operation the surface from fluorescent lamp produce leakage current.The result is that although starter is carried out an initial warm-up operation, this fluorescent lamp is not produced the second-rate operation of lighting thus by discharge.Owing to open and close the door of refrigerator continually in the very short time interval, possibility is owing to water smoke makes the quality of lighting operation low when depositing article and take out in refrigerator.

In order to solve the above low problem of operational quality of lighting that occurs in the fluorescent lamp that starter opens and closes, used a transverter to open and close fluorescent lamp.But this converter type fluorescent lamp needs a high voltage to start, and has quickened the process of fluorescent lamp blackening thus, and has shortened the life-span of using thus, also produces a harmful electromagnetic wave thus, and the cost that has improved product.

As mentioned above, frequent lights the life-span that fluorescent lamp has been shortened in operation, causes thus owing to often change the inconvenience that fluorescent lamp brings.In addition, if the poor quality of fluorescent lamp is lighted operation by because the leakage current that produces at the formed water smoke in fluorescent lamp surface takes place, the user can feel the reliability decrease of uncomfortable and refrigerator.

For overcoming the above problems, an object of the present invention is to provide a kind of method and the device of the lighting operation that are used to control fluorescent lamp, wherein when repeatedly opening and closing refrigerator doors repeatedly in the short time, when each door is closed, fluorescent lamp is not closed but is continuous in staying open state, with prevent owing to frequent light operation shorten fluorescent lamp life-span and owing to leakage current cause to light operational quality low, make the user feel to use the comfortableness and the height reliability of refrigerator thus.

For realizing above-mentioned purpose of the present invention, a kind of control method of fluorescent lamp lighting is provided, it is used for refrigerator, wherein power supply is to provide according to opening of refrigerator doors, and fluorescent lamp is by starter preheating one preset time, fluorescent lamp is opened after preheating, and the control method of this fluorescent lamp lighting may further comprise the steps: detect one of refrigerator doors and open state; And power supply and this fluorescent lamp disconnected after through a preset time by the rotation break and to close this fluorescent lamp, wherein on turning point, as a result who opens state who detects door, the open mode of door is converted to the closed condition of door.

Here, this preset time section is set to 5 to 15 seconds, can suitably be made as 10 seconds, so that prevent, and be provided with one and can prevent from suitable to be in the state time of opening owing to what frequently light the problems referred to above of causing of operation owing to the unnecessary open mode that is in for a long time causes power loss.

The fluorescent lamp lighting that is used for refrigerator control device also is provided, and it has a starter, is used for beginning to carry out initial preheating according to power supply power supply; It also has a stabilizer, is used for opening this fluorescent lamp according to power supply after the initial preheating of starter and the counter electromotive force that the disconnection of this starter produces.This fluorescent lamp lighting control device comprises: be used for the door that refrigerator doors opens and open detector; Thereby and be used for starting the power supply power supply so that open this fluorescent lamp and cut off the controller of lighting that this fluorescent lamp power supply is closed this fluorescent lamp after refrigerator doors is shut one scheduled time of back from detecting according to a testing result of opening of opening detector from door.

Here this preset time section is set to 5-15 second, suitably is 10 seconds.

Fig. 1 is the schematic circuit according to fluorescent lamp lighting control device of the present invention.

Fig. 2 is the flow chart according to fluorescent lamp lighting control method of the present invention.

A preferred embodiment of the present invention is described below with reference to accompanying drawings.

In Fig. 1, the circuit of lighting fluorescent lamp 10 comprise be used to provide a power supply 1 that exchanges (AC) voltage, with the stabilizer 3 of power supply 1 serial connection, the starter 9 and being used to that is used to carry out the initial warm-up operation of fluorescent lamp 10 is connected or cut off the electricity supply 1 and the relay 11 of fluorescent lamp 10.Whole control process is carried out by microcomputer 30.The signal output of slave microcomputer 30 sends to relay 11 by buffer 13.The effect of buffer 13 is to convert the signal of telecommunication from microcomputer 30 to relay 11 to carry out the required current stage signal of switching function.

Door switch 21 switches on or off according to opening or closing of refrigerator doors.Microcomputer 30 detects whether refrigerator doors are what open, and its uses the signal input according to the state of door switch 21, so as to cause fluorescent lamp 10 once light operation.

When refrigerator doors was opened, door switch 21 was connected, and microcomputer 30 detects door and opening.Therefore microcomputer is opened relay 11 by buffer 13, thereby forms the preheating loop that is made of AC power supplies 1, stabilizer 3, right filament 7, starter 9, left filament 5, relay 11 and AC power supplies 1.The result is, the warm-up operation that is used to light this fluorescent lamp 10 begins.Warm finishes after preheating begins about 0.5 second, and the electric current that starter 9 cuts off it flows.Therefore, the loop of lighting that is made of AC power supplies 1, stabilizer 3, right filament 7, left filament 5, relay 11, AC power supplies 1 forms, and meanwhile produces a high pressure counter electromotive force from stabilizer 3 and lights fluorescent lamp 10.In case fluorescent lamp 10 has been lighted, when refrigerator doors was being opened, this was lighted loop and is just keeping, so that keep the illuminating state of fluorescent lamp 10 continuously.

After this, when refrigerator doors is shut thereby door switch 21 when cutting off, thereby microcomputer draws and turn-offs relay 11 so that fluorescent lamp 10 is closed in the power supply of cut-out fluorescent lamp 10 a scheduled time after.If refrigerator doors is opened once more in the above-mentioned scheduled time, the illuminating state of fluorescent lamp 10 keeps continuously, need not preheating under this mode and lights process.Here, predetermined holding time is to open and close so that inside storage purposes and the average time interval when getting thing when refrigerator doors by considering, consider because thereby refrigerator doors is opened the ice fog that makes warm air flow into refrigerator inside and form on the surface of fluorescent lamp 10 disappears to light at fluorescent lamp 10 and do not produce the leakage current required time in the operating process, and consider correctly to determine owing to fluorescent lamp 10 is in the power loss that unnecessary long open mode causes.Can be set to about 5-15 second so this lights to hold time, suitably be approximately 10 seconds.In addition, this is held time is to default in the microcomputer 30, but it can be imported so that this is held time by the user and can be adjusted to a suitable value.

Fig. 2 is the flow chart according to fluorescent lamp lighting control method of the present invention.Refrigerator in running time microcomputer 30 always detect refrigerator doors and whether be in open mode (S1).When door was opened, fluorescent lamp 10 was opened (S2), was installed in being used at the counter of holding time that door is closed back counting illuminating state be reset (S3) in the microcomputer 30 then.

If door is closed (S4), then counter works (S5).Microcomputer 30 judges whether the value of counter indication reaches preset time (S6).When the indicated value of counter reached the scheduled time, fluorescent lamp 10 was turned off (S7).If the counter indicated value does not reach the scheduled time, the illuminating state of fluorescent lamp 10 keeps (S8) continuously.Then, microcomputer 30 judges whether inside door is opened (S9) once more at the fixed time.The result is if door is opened once more, and counter resets (S3) once more, and repeats subsequent process.If door is not opened, program turns back to S6 and goes on foot and judge whether to have passed through the scheduled time.

As mentioned above, the present invention prevents owing to light frequently at short notice that the fluorescent lifetime that causes of operation shortens and because the low problem of operational quality of lighting that leakage current causes, thereby allows the user feel to use the comfortable and height reliability of refrigerator.

Claims

1. control method of lighting that is used for the fluorescent lamp of refrigerator, wherein power supply is powered according to opening of refrigerator doors, and fluorescent lamp is by starter preheating one preset time and be opened after preheating, and this fluorescent lamp lighting control method may further comprise the steps:

Detect the open mode of refrigerator doors; And

Close this fluorescent lamp, it disconnects power supply and fluorescent lamp after through a preset time by the rotation break closes, and on turning point, as detecting the result that door is in open mode, the open mode of door is converted to the closed condition of door.

2. according to the fluorescent lamp lighting control method of claim 1, the wherein said scheduled time is set to 5-15 second.

3. be used in a kind of fluorescent lamp lighting control device in the refrigerator, it has the starter and the stabilizer that begin to carry out initial preheating that is used for according to the power supply power supply, be used for carrying out power supply after the initial preheating and this starter according to starter and disconnect the counter electromotive force that produces and open this fluorescent lamp, this fluorescent lamp lighting control device comprises:

The door of opening of detecting gate is opened detector; And

One lights controller, thereby its is opened testing result according to the door of opening detector from door and starts power supply power supply so that open this fluorescent lamp and shut one scheduled time of back and cut off this fluorescent lamp power supply later and close this fluorescent lamp from detecting door.

4. according to the fluorescent lamp lighting control device of claim 3, the wherein said scheduled time is set to 5-15 second.