CN1102878A - Method for controlling temperature of cold compartment of refrigerator - Google Patents
Method for controlling temperature of cold compartment of refrigerator Download PDFInfo
- Publication number
- CN1102878A CN1102878A CN94108636A CN94108636A CN1102878A CN 1102878 A CN1102878 A CN 1102878A CN 94108636 A CN94108636 A CN 94108636A CN 94108636 A CN94108636 A CN 94108636A CN 1102878 A CN1102878 A CN 1102878A
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- refrigerating chamber
- temperature
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- refrigerator
- air door
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The aim of the invention is to provide a temperature control method of refrigerator cold storage chamber, which method can solve the problem of that the cold air flowed into the cold storage chamber at the proper refrigerating chamber temperature flows back into the refrigerating chamber. The method contains the following steps. The steps to check the cold storage chamber temperature at the proper refrigerating chamber temperature, which is regulated by the compressor and the fan of the refrigerating chamber. The steps to compare the cold storage chamber temperature checked in the steps with the proper temperature designed by the cold storage chamber to figure out the difference values. The steps to compare the temperature difference figured out in the steps with the designed base temperature difference. And the steps to regulate the air door of the cold storage chamber and the fan drive of the refrigerating chamber.
Description
The present invention relates to the method for controlling temperature of cold compartment of refrigerator, particularly in middle chamber or the following method for controlling temperature of cold compartment of the refrigerator of chamber of refrigerating chamber.
Fig. 1 is the refrigerator pie graph that general refrigerating chamber 20 is arranged in the chamber, and the vegetable compartment 30 of chamber constitutes by being positioned at indoor refrigerating chamber 10 and being positioned at down for it.
The compressor 40 that is used for compression refrigerant is installed in the bottom of above-mentioned refrigerator; Evaporimeter 50, refrigerating chamber fan electromotor 60 are installed in the back of above-mentioned refrigerating chamber 20 and are used to be controlled at the refrigerating chamber air door 70 of the cold airflow of above-mentioned refrigerating chamber 20 generations to refrigerating chamber 10.
Fig. 2 is that the refrigerator and cooled that is used to be controlled at above-mentioned formation is hidden the traditional circuit pie graph of room temperature, this control circuit comprises: the freezer temperature test section 1 of detecting freezer temperature, detect the temperature of refrigerating chamber test section 2 of temperature of refrigerating chamber, receive temperature value respectively by above-mentioned refrigerating chamber test section 1 and 2 outputs of refrigerating chamber test section, and control the microcomputer 3 of whole refrigerator action according to the temperature that the user sets, control signal excitation first according to above-mentioned microcomputer 3 outputs, two relays 4,5 and the dynamo-electric machine 6 of drive compression, the drive part 9 of refrigerating chamber fan machine 7 and refrigerating chamber air door 8.
The operation of the conventional refrigerator control circuit of the above-mentioned formation of 2 explanations with reference to the accompanying drawings.
User one divides (not shown) to set institute's fixed temperature by temperature setting portion, and microcomputer 3 is just read this design temperature and exported " high potential " signal to temperature control channel PA1, PA2." high potential " signal by temperature control channel PA1, the PA2 of above-mentioned microcomputer 3 output is input to first, second reverse swing door 9a in the drive part, the negative pole of 9b respectively.Owing to being added in high potential on the above-mentioned first reverse swing door 9a negative pole anodal current potential is reduced, thus make the 12V voltage that is connected with positive pole in the coil L1 of first relay 4, produces electric current also by the described first inverse gate 9a by bypass.
Owing in the coil of described first relay 4, have electric current to flow through, the contact b closure of relay switch SW1 like this, thus make AC power supply drive motor for compressor 6 and the refrigerating chamber fan electromotor 7 of 220V.Therefore described drive motor for compressor 6 and the refrigerating chamber fan electromotor 7 of having connected power supply make compressor and refrigerating chamber fan work, thereby make the refrigerator running.
In addition, reduce owing to also added " high potential " so anodal current potential on the negative pole of the second inverse gate 9b in the drive part 9, thereby make the 12V voltage that is connected with positive pole in the coil L2 of second relay 5, produce electric current by the second inverse gate 9b and by bypass.
Owing to pass through electric current among the coil L2 of described second relay 5, and make the contact b2 closure of relay switch SW2.Therefore be added on the refrigerating chamber damper motor 8 owing to the 220V AC power, so refrigerating chamber air door 70 is opened.
The cold air that is produced by the driving of described compressor circulates under the driving of refrigerating chamber fan and flows into refrigerating chamber, the temperature of refrigerating chamber and refrigerating chamber is more and more descended, detect the variations in temperature of such refrigerating chamber and refrigerating chamber by freezer temperature test section 1 and temperature of refrigerating chamber test section 2 respectively.
The temperature detection of described freezer temperature test section 1 changes by freezer temperature sensor R according to the temperature of refrigerating chamber
SFResistance change and be detected.
Along with described freezer temperature sensor R
SFAnd resistance R
4And the applied voltage V that changes
CCOrder is by capacitor C
1, resistance R
5, capacitor C
2And be input to the input channel PB1 of microcomputer 3.The temperature that described microcomputer 3 is read refrigerating chamber according to the described magnitude of voltage that is transformed into numeral.Therefore, microcomputer 3 is compared the freezer temperature that the temperature user who reads sets, if there is temperature difference in judgement, microcomputer 3 control compressor and refrigerating chamber fans also make variations in temperature arrive the freezer temperature that the user sets.
Simultaneously, the variation of temperature of refrigerating chamber also should be detected in temperature of refrigerating chamber test section 2.That is to say, by temperature of refrigerating chamber sensor R
SRAnd resistance R
6And the voltage V that adds
CCThe variation magnitude of voltage through capacitor C
3, resistance R
7, capacitor C
4And the temperature of refrigerating chamber that is input to microcomputer 3 detects input channel PB2.Described microcomputer 3 is compared the temperature of refrigerating chamber of reading with the refrigeration room temperature that the user sets, and according to this temperature difference control refrigerating chamber air door 70, makes temperature of refrigerating chamber change to the temperature of refrigerating chamber that the user sets.
That is to say,, then continue the output high potential signal to refrigerating chamber input channel PA2 if when the temperature of refrigerating chamber that the temperature of refrigerating chamber that detects is set than the user is high.The cold air of opening refrigerating chamber air door 70 whereby, compressor being produced flows in the refrigerating chamber, and makes present high temperature be reduced to the temperature of setting.
If the temperature of refrigerating chamber that detects is not higher than the temperature of refrigerating chamber that the user sets, then to described refrigerating chamber I/O channel PA2 output low-potential signal.Low-potential signal by described passage PA2 output is added on the negative pole of the second inverse gate 9b in the drive part 9, and the positive electrode potential of such second inverse gate 9b uprises, and makes the relay coil L2 of second relay 5 not have electric current to pass through.When not having electric current to flow among the described relay coil L2, relay switch SW2 is in off-state, and promptly the contact switches to a2 from b2, thereby has cut off the AC power that is added on the refrigerating chamber damper motor 8, and the driving of refrigerating chamber damper motor 8 is ended.The driving one of described refrigerating chamber damper motor 8 is ended, and the refrigerating chamber air door 70 of Fig. 1 is just closed immediately, thereby has cut off the inflow of the cold air of refrigerating chamber to refrigerating chamber.
; when in a single day the control circuit of traditional like this refrigerating chamber reaches proper level in the temperature of refrigerating chamber; compressor and the refrigerating chamber fan irrelevant with temperature of refrigerating chamber disconnect immediately, open and close with the irrelevant refrigerating chamber air door of freezer temperature according to the variations in temperature of refrigerating chamber.In case utilize other mode to drive refrigerating chamber and refrigerating chamber, though reaching proper level, freezer temperature make compressor and refrigerating chamber be in the state of disconnection, but refrigerating chamber does not reach design temperature and refrigerating chamber air door when opening, and the phenomenon of refrigerating chamber can take place to arrive by described air door adverse current once more by the cold air that described air door flows into refrigerating chamber.Gu freezer temperature and in case the problem that the adverse current that cold air land measure equal to fifteen mu in most parts of the Northeast refrigerating chamber takes place can make the temperature that causes refrigerating chamber raise once more can not be correctly controlled in this existence.
The method for controlling temperature of cold compartment that the purpose of this invention is to provide refrigerator, it can solve the problem that the cold air another mistake that flows into refrigerating chamber under suitable freezer temperature flows to refrigerating chamber.
Another object of the present invention provides method for controlling temperature of cold compartment of refrigerator, the fan that it drives temperature of refrigerating chamber under suitable freezer temperature when rising and prevent that the temperature of refrigerating chamber from rising.
For realizing such purpose, the method for controlling temperature of cold compartment of refrigerator of the present invention comprises the following steps: to detect the temperature of refrigerating chamber under the suitable freezer temperature of being regulated by the driving of compressor and refrigerating chamber fan; The temperature of refrigerating chamber of described detection is compared with the setting proper temperature of refrigerating chamber, and calculate this difference; The temperature difference that calculated is compared with the fiducial temperature difference of setting and regulate refrigerating chamber air door and the freezing driving of deciding fan.
Fig. 1 is the sectional view with general refrigerator of middle chamber refrigerating chamber;
Fig. 2 is the temperature-control circuit figure of conventional refrigerator;
Fig. 3 is the cool room temperature control apparatus pie graph that is applicable to refrigerator of the present invention;
Fig. 4 is the detailed pie graph of the microcomputer among Fig. 3;
Fig. 5 is the signal flow graph for the method for controlling temperature of cold compartment of explanation refrigerator of the present invention.
Fig. 3 is the cool room temperature control apparatus pie graph of refrigerator of the present invention, and this device comprises: the freezer temperature test section 100 of detecting freezer temperature; Detect the refrigerated storage temperature test section 101 of temperature of refrigerating chamber; The microcomputer 102 that the temperature that input is detected in described refrigerating chamber test section 100 and temperature of refrigerating chamber test section 101 is compared, whereby the action of whole refrigerator controlled with fiducial temperature respectively; According to control signal control first to the 3rd relay 104～106 of described microcomputer 102 outputs, so as control drive motor for compressor 107, the drive control part 103 of the driving of refrigerating chamber air door fan electromotor 108, refrigerating chamber damper motor 109.
The effect and the effect of the cool room temperature control apparatus of the refrigerator of the present invention that describes such formation in detail below with reference to microcomputer pie graph and Fig. 5 of Fig. 4.
At first, the user sets freezer temperature and the temperature of refrigerating chamber that is determined by temperature setting portion branch (not shown).Read this setting value and export high potential signal respectively according to the temperature microcomputer 102 that the user sets by passage PA1～PA3.
High potential signal by the passage PA1 of described microcomputer 102～PA3 output is input to the negative pole end of first to the 3rd inverse gate 103a～103c in the drive control part 103 respectively respectively.
Owing to the high potential that is added on the described first inverse gate 103a negative pole reduces anodal current potential.Thereby make with the anodal 12V voltage that links to each other and in the coil (L3) of first relay 104, produce electric current also by the first phase inverter 103a and by bypass.
In a single day have electric current to pass through among the coil L3 of described first relay 104, the contact of relay switch SW3 just switches to the b1 state from the a1 state.Therefore the AC power of 220V is added on the drive motor for compressor 107, makes the cold-producing medium gasification with the drive compression machine.
In addition owing to be added on the negative pole of second inverse gate 103 in the drive control part 103.High potential and anodal current potential is reduced.Thereby make with the anodal 12V voltage that links to each other and in the coil L4 of second relay 105, produce electric current also by the second inverse gate 103b and by bypass.
One has electric current to flow through among the coil L4 of described second relay 105, and the contact of relay switch SW4 just switches to the b2 state from the a2 state.Therefore the AC power of 220V is added on the refrigerating chamber fan electromotor 108 to drive the refrigerating chamber fan.
In like manner, owing to making anodal current potential, reduces by the high potential on the 3rd inverse gate 103c negative pole that is added in the drive control part 103.Therefore, the 12V voltage that is connected with positive pole produces electric current also by the 3rd inverse gate 103c and by bypass in the coil L5 of the 3rd relay 106.
One has electric current to pass through in the coil L5 of described the 3rd relay 106, and the contact of relay switch SW5 just switches to the b3 state from the a3 state.Therefore the 220V AC power is added on the refrigerating chamber damper motor 109, to open the refrigerating chamber air door.
Under the driving condition of compressor electric motor 107, refrigerating chamber fan electromotor 108 and damper motor 109, freezer temperature test section 100 is according to the driving of described compressor and refrigerating chamber air door and the temperature of change detected.That is to say, because freezer temperature sensor R
SFResistance value change along with the variations in temperature of outside, so pass through resistance R
4Be input to the voltage V of the passage PB1 of microcomputer 102
CCAlong with described freezer temperature sensor R
SFResistance value and change.
So the magnitude of voltage that changes is by capacitor C
1, C
2Be input to as the freezer temperature value among the analogue/digit channel PB1 of microcomputer 102.
Temperature of refrigerating chamber test section 101 is opened the refrigerating chamber air door, and is detected the variations in temperature when cold air that refrigerating chamber produces circulate the inflow refrigerating chamber under the driving of refrigerating chamber fan electromotor 108 and import as the temperature of refrigerating chamber value among the analogue/digit channel PB2 of microcomputer 102 by the driving of described refrigerating chamber damper motor 109.
Described microcomputer 102 compares the temperature of refrigerating chamber and the freezer temperature of input and judge, so that the output control signal, describes below with reference to the microcomputer pie graph of Fig. 4.
The temperature value that is detected respectively by refrigerating chamber/temperature of refrigerating chamber test section 100/101 is input among the comparator 102c by input unit 102a.Described comparator 102c compares freezer temperature and temperature of refrigerating chamber value with the fiducial temperature that is stored among the memory 102b.
If the fiducial temperature of setting with the user at the temperature of refrigerating chamber that detects when relatively the temperature of refrigerating chamber temperature set than the user in back is high, then continues to passage PA1, PA2 and PA3 output high potential signal, drive compression machine and refrigerating chamber fan and opens the refrigerating chamber air door.
When if the fiducial temperature that the temperature of refrigerating chamber that detects is set than the user is hanged down, then to passage PA3 output low-potential signal.
Low-potential signal by the passage PA3 of described microcomputer 102 output is added on the negative pole end of the 3rd inverse gate 103c in the drive control part 103, therefore the positive electrode potential of the 3rd inverse gate 103c uprises, and so just makes that electric current stops to flow in the coil L5 of the 3rd relay 106.
Electric current one does not flow in described coil L5, and the contact of relay switch SW5 just switches to a3 from b3.
Therefore, interrupt the driving power supply of refrigerating chamber damper motor 109 and closed the refrigerating chamber air door, so just cut off the cold air that flows into refrigerating chamber.
When freezer temperature was in appropriate value in described freezer temperature detection-phase, microcomputer 102 was just to passage PA1 output low-potential signal.
The low-potential signal that is added on the described passage PA1 is applied on the negative pole end of the first inverse gate 103a in the drive control part 103.Therefore, the positive terminal of the first reverse swing door 103a becomes high potential and makes that electric current stops to flow among the coil L3 of first relay 104.
Along with the cut-out of the electric current among the described coil L3, the relay switch SW3 contact of first relay 104 just switches to a from b, has cut off whereby to be added in the AC power on the drive motor for compressor 107 and to interrupt the driving of compressor.
The temperature of refrigerating chamber that detects under the state that will disconnect in the driving of described compressor subtracts each other to calculate temperature difference with the temperature that the user sets.
Then the temperature difference that is calculated is compared with the fiducial temperature poor (3 ℃) that is stored among the memory 102b.
If above-mentioned comparative result is during than fiducial temperature difference (3 ℃) high slightly (3 °～5 °), the air door of closing cold room and stop the fan of refrigerating chamber then.
That is to say that than fiducial temperature difference during high slightly and closing cold room air door, the cold air that can prevent to flow into refrigerating chamber by such control operation under refrigerating chamber fan off-state adverse current again flows in the refrigerating chamber in detected temperatures.
At above-mentioned comparative result as occurring calculating under the situation of temperature difference than fiducial temperature difference (3 ℃) high quite a lot of (more than 6 ℃), then should continue to stay open the refrigerating chamber air door, only continue to drive the refrigerating chamber fan electromotor, so that make the cold air that produces from refrigerating chamber flow into refrigerating chamber.
Here only drive the refrigerating chamber fan and just have the effect that prevents the cold air adverse current, promptly flow into refrigerating chamber by the cold air that makes refrigerating chamber and can also reach the purpose that temperature of refrigerating chamber reduces at short notice.
Then by detecting temperature gap that temperature of refrigerating chamber calculates when lower, by the closing cold room air door, stop the refrigerating chamber fan electromotor and finish the temperature of refrigerating chamber and control than described fiducial temperature poor (3 ℃).
Below with reference to Fig. 5 such method for controlling temperature of cold compartment is described.
The temperature of under the state of drive compression machine and refrigerating chamber fan electromotor, measuring the temperature of refrigerating chamber and judging whether to reach suitable (step ST1, ST2).
If described judged result shows the temperature that has reached suitable, then disconnect compressor (ST3), and the temperature difference of judging design temperature and measuring temperature with the difference of fiducial temperature whether in institute more than the definite value (ST4).
If the difference that described judged result shows design temperature and measures temperature with the difference of fiducial temperature difference in institute more than the definite value, just open the air door of refrigerating chamber and drive the refrigerating chamber fan (ST5, ST6).
If the difference that described judged result shows design temperature and measures temperature with the difference of fiducial temperature in institute below the definite value, just closing cold room air door and stop refrigerating chamber fan (ST7, ST8).
If showing, the freezer temperature judged result in described second step also do not reach proper temperature, just drive compression machine and refrigerating chamber fan (ST9, ST10).
Judge whether temperature of refrigerating chamber reaches proper temperature (ST11) after described compressor is with the refrigerating chamber fans drive.If showing, judged result reached proper temperature, just closing cold room air door (ST12); If judged result shows that also not reaching proper temperature just opens refrigerating chamber air door (ST13).
According to the present invention who as above describes in detail because under the compressor off-state according to a temperature of refrigerating chamber fan motor, can prevent the adverse current of cold air whereby, also can prevent the rising of temperature of refrigerating chamber by the adverse current that prevents described cold air.
Claims (2)
1, a kind of method for controlling temperature of cold compartment of refrigerator is characterized in that, it may further comprise the steps:
Under the suitable freezer temperature of regulating by the driving of compressor and refrigerating chamber fan, detect temperature of refrigerating chamber;
The proper temperature that the temperature of refrigerating chamber that above-mentioned steps is detected is set with refrigerating chamber is compared and is calculated this difference;
The temperature difference that calculates in the above-mentioned steps compared with the fiducial temperature difference of setting and regulate the driving of refrigerating chamber air door and refrigerating chamber fan.
2, the method for controlling temperature of cold compartment of refrigerator as claimed in claim 1 is characterized in that, it is further comprising the steps of:
When the temperature difference that is calculating in regulating described refrigerating chamber air door and refrigerating chamber fan and actuation step was lower than the fiducial temperature difference of setting, the closing cold room air door also stopped the refrigerating chamber fan;
When the temperature difference that calculates is higher than the fiducial temperature difference of setting, just opens the refrigerating chamber air door and drive the refrigerating chamber fan.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019930015317A KR950006403A (en) | 1993-08-06 | 1993-08-06 | Refrigerator room temperature control method |
| KR15317/93 | 1993-08-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1102878A true CN1102878A (en) | 1995-05-24 |
Family
ID=19360916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94108636A Pending CN1102878A (en) | 1993-08-06 | 1994-08-05 | Method for controlling temperature of cold compartment of refrigerator |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR950006403A (en) |
| CN (1) | CN1102878A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329703C (en) * | 1998-07-29 | 2007-08-01 | 株式会社三协精机制作所 | Refrigerator |
| CN101995131A (en) * | 2009-08-12 | 2011-03-30 | 日立空调·家用电器株式会社 | Refrigerator |
| CN102466382A (en) * | 2010-11-10 | 2012-05-23 | 安徽康佳同创电器有限公司 | Air-cooling refrigerator and defrosting method thereof |
| CN102901320A (en) * | 2012-08-06 | 2013-01-30 | 海信容声(广东)冰箱有限公司 | Control method of refrigerator applicable to high-temperature environment |
| CN103983070A (en) * | 2014-05-06 | 2014-08-13 | 合肥美的电冰箱有限公司 | Control method for refrigerator air door, control device for refrigerator air door and air-cooled refrigerator |
| CN104677048A (en) * | 2015-03-19 | 2015-06-03 | 合肥美菱股份有限公司 | Air capacity control method for refrigerating compartment of refrigerator and refrigerator |
| CN113551477A (en) * | 2021-07-23 | 2021-10-26 | 珠海格力电器股份有限公司 | Air-cooled refrigerator temperature control method, air-cooled refrigerator and computer readable storage medium |
| CN114674106A (en) * | 2022-04-26 | 2022-06-28 | 长虹美菱股份有限公司 | Refrigerator capable of converting temperature area |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100339538B1 (en) * | 1998-10-28 | 2002-07-18 | 구자홍 | How to control cold air in refrigerator |
-
1993
- 1993-08-06 KR KR1019930015317A patent/KR950006403A/en not_active Application Discontinuation
-
1994
- 1994-08-05 CN CN94108636A patent/CN1102878A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329703C (en) * | 1998-07-29 | 2007-08-01 | 株式会社三协精机制作所 | Refrigerator |
| CN101995131A (en) * | 2009-08-12 | 2011-03-30 | 日立空调·家用电器株式会社 | Refrigerator |
| CN101995131B (en) * | 2009-08-12 | 2014-09-10 | 日立空调·家用电器株式会社 | Refrigerator |
| CN102466382A (en) * | 2010-11-10 | 2012-05-23 | 安徽康佳同创电器有限公司 | Air-cooling refrigerator and defrosting method thereof |
| CN102901320A (en) * | 2012-08-06 | 2013-01-30 | 海信容声(广东)冰箱有限公司 | Control method of refrigerator applicable to high-temperature environment |
| CN102901320B (en) * | 2012-08-06 | 2014-12-24 | 海信容声(广东)冰箱有限公司 | Control method of refrigerator applicable to high-temperature environment |
| CN103983070A (en) * | 2014-05-06 | 2014-08-13 | 合肥美的电冰箱有限公司 | Control method for refrigerator air door, control device for refrigerator air door and air-cooled refrigerator |
| CN104677048A (en) * | 2015-03-19 | 2015-06-03 | 合肥美菱股份有限公司 | Air capacity control method for refrigerating compartment of refrigerator and refrigerator |
| CN104677048B (en) * | 2015-03-19 | 2017-03-15 | 合肥美菱股份有限公司 | A kind of refrigeration for refrigerator compartment air quantity control method and its electric refrigerator |
| CN113551477A (en) * | 2021-07-23 | 2021-10-26 | 珠海格力电器股份有限公司 | Air-cooled refrigerator temperature control method, air-cooled refrigerator and computer readable storage medium |
| CN114674106A (en) * | 2022-04-26 | 2022-06-28 | 长虹美菱股份有限公司 | Refrigerator capable of converting temperature area |
Also Published As
| Publication number | Publication date |
|---|---|
| KR950006403A (en) | 1995-03-21 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |