EP0837289B1 - Dispositif de conditionnement d'air - Google Patents

Dispositif de conditionnement d'air Download PDF

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Publication number
EP0837289B1
EP0837289B1 EP97305776A EP97305776A EP0837289B1 EP 0837289 B1 EP0837289 B1 EP 0837289B1 EP 97305776 A EP97305776 A EP 97305776A EP 97305776 A EP97305776 A EP 97305776A EP 0837289 B1 EP0837289 B1 EP 0837289B1
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EP
European Patent Office
Prior art keywords
air conditioner
indoor
auto
control unit
power supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97305776A
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German (de)
English (en)
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EP0837289A2 (fr
EP0837289A3 (fr
Inventor
Hirokazu Unno
Kaku Okada
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Toshiba Corp
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Toshiba Corp
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Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to EP03003271.8A priority Critical patent/EP1314934B8/fr
Priority to EP03003272.6A priority patent/EP1314935B8/fr
Publication of EP0837289A2 publication Critical patent/EP0837289A2/fr
Publication of EP0837289A3 publication Critical patent/EP0837289A3/fr
Application granted granted Critical
Publication of EP0837289B1 publication Critical patent/EP0837289B1/fr
Anticipated expiration legal-status Critical
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values

Definitions

  • the auto-re-start function may comprise storing the present air conditioning operation of the air conditioner as data to a memory, such as a non-volatile EEPROM or the like, and automatically restarting an air conditioning operation on the basis of the data stored in the memory, when a power supply to the air conditioner is interrupted and then is recovered.
  • a memory such as a non-volatile EEPROM or the like
  • Air conditioners such as room air conditioners and the like circulate a refrigerant in a refrigerating cycle thereby cooling and/or heating a room by condensing or evaporation of the refrigerant.
  • These air conditioners are now one of the necessities in homes and buildings.
  • An air conditioner is available which carries out an auto-re-start control procedure for executing air conditioning of high reliability and high operability.
  • the auto-re-start control is a control system constructed such that the current operating state of the air conditioner is stored in a non-volatile memory (for example, an EEPROM or similar memories). If the air conditioning operation of the air conditioner is stopped by a power failure, that is, an interruption of power supply to the air conditioner, and the power supply to the air conditioner is recovered after the passage of a period of time, the air conditioning operation is automatically restarted by reading out the operating state stored in the memory.
  • An air conditioner having an auto-re-start control system thus permits the restarting of the air conditioning operation without further manual setting of data corresponding to the content of the air conditioning operation after the power supply is recovered.
  • Known air conditioners are divided into two types: one type of air conditioner is provided with components relating to the above auto-re-start control system (a memory, a program and the like which are needed for carrying out the auto-re-start control), so that the air conditioner is able to execute the auto-re-start control at all times; the other type of air conditioner is not able to carry out the auto-re-start control.
  • known air conditioners are either of the fixed type in which the auto-re-start control is executed or of the type in which the auto-re-start control is not executed.
  • a power failure an interruption of power supply to the air conditioner
  • an air conditioner in that country is often stopped by the interruption of the power supply.
  • a user in the power-short areas must restart an air conditioning operation by operating, for example, a remote controller each time an interruption occurs, which leads to an excessive burden being imposed on the user.
  • many users require auto-re-start control in the power-short areas.
  • the air conditioner in which the conventional auto-re-start control system is installed includes no specifically determined control system when the timer is set. Therefore, when an interruption of power supply to the air conditioner occurs while the timer is set and the power supply is recovered after a period of time, the known air conditioner is restarted on the basis of an operation mode prior to the occurrence of the interruption of power supply. This means that the air conditioner is restarted after restoration of the power supply regardless of the setting of the timer.
  • the timer may be set, for example, to a timer entering mode (an operation of the air conditioner is stopped at present and the operation is started at a predetermined time in the future "x minutes past y"), or to a timer cutting mode (the air conditioner is operated until a predetermined time in the future "x minutes past y" and stopped at the time). Therefore, the air conditioner is started irrespective of the setting of the timer which might be at a time at which the user does not want the air conditioner to operate.
  • the present invention is directed to at least alleviate the problems associated with the above-mentioned air conditioners.
  • the present invention seeks to provide an air conditioner in which whether auto-re-start control is executed or not can be selected by a user thereby improving the flexibility of the air conditioner in relation to various different power supply environments.
  • the present invention also seeks to specifically determine how the auto-re-start control is executed when a timer is set thereby improving the flexibility of the air conditioner in relation to the timer operation under various different power supply environments.
  • the present invention also seeks to visibly indicate whether auto-re-start control is executed or not whereby a user can easily and instantly know whether or not the auto-re-start control is executed.
  • JP-A-07-208789 discloses an air conditioner having the precharacterising features of claim 1.
  • an air conditioner having a function of automatically restarting a predetermined air conditioning operation in a case where a power supply from a power source to the air conditioner is interrupted and then the power supply from the power source thereto is recovered, the air conditioner comprising:
  • the air conditioner further comprises indicating means for distinguishably indicating whether or not the automatic restart operation is performed, said indicating means having an indicating lamp having a predetermined colour which is lit only when the automatic restart operation is performed and an operation indicating lamp having a predetermined colour which is lit while the executing means executes the air conditioning operation, said colour of the operation indicating lamp being different from the colour of the indicating lamp.
  • whether or not the automatic restart operation is performed can be set by operating the auto-re-start setting means (for example, by manually operating the changeover switch), the user can easily select whether or not the automatic restart operation is performed depending upon a power supply environment and the like under which the air conditioner is used and the use thereof.
  • the auto-re-start control is executed only when the performance of the automatic restart operation is set by the auto-re-start setting means.
  • the automatic restart operation is executed only when the executing unit executes the preset air conditioning operation based on the timer entering mode, that is, only when the air conditioning operation is executed based on the intention of the user.
  • the auto-re-start control is performed only when the judgement means judges that the performance of the automatic restart operation is set by the auto-re-start setting means. As a result, even if an interruption of power supply and a recovery thereof occur during the quiet sleeping operation, the quiet sleeping operation can be executed again according to the performance of the automatic restart operation of the executing means.
  • Fig. 1 is a block diagram showing the construction of the refrigerating cycle of an air conditioner according to the first embodiment.
  • the air conditioner 1 constitutes a refrigerating cycle for reversibly circulating a refrigerant by sequentially and annularly connecting, through a piping 7, a compressor 2, a four-way valve 3 having a function for switching a refrigerant flow passage, an indoor heat exchanger 4 disposed opposite to an indoor fan 4a, an electronic control valve (PMV) 5, as an example of an expansion valve and an outdoor heat exchanger 6 disposed opposite to an outdoor fan 6a.
  • PMV electronic control valve
  • the air conditioner 1 circulates the refrigerant along the directions of solid lines in Fig. 1 (the compressor 2 ⁇ the four-way valve 3 ⁇ the outdoor heat exchanger 6, which condenses the refrigerant ⁇ the PMV 5 ⁇ the indoor heat exchanger 4, which evaporates and cools the refrigerant ⁇ the four-way valve 3 ⁇ the compressor 2... ⁇ by switching the four-way valve 3 (the four-way valve 3 ⁇ OFF) when the compressor 2, the indoor fan 4a and the outdoor fan 6a are operated so that the air conditioner 1 operates in a cooling mode so as to supply a cool conditioned air and further circulates the refrigerant along the directions of broken lines in Fig.
  • the compressor 2, the four-way valve 3, the PMV 5, the outdoor heat exchanger 6 and the outdoor fan 6a are provided in an outdoor unit disposed out of a room.
  • the outdoor unit includes an evaporating temperature sensor 9 disposed to the outdoor heat exchanger 6 for detecting the evaporating temperature of the refrigerant in the outdoor heat exchanger 6 and an outside air temperature sensor 10 disposed to the outdoor heat exchanger 6 itself or in the vicinity of the outdoor heat exchanger 6 for detecting the outside temperature. According to the signals and the like detected by the evaporating temperature sensor 9 and the outside air temperature sensor 10, respectively, the outdoor unit is adapted to control the entire outdoor component including the compressor 2 and other elements.
  • the indoor heat exchanger 4 and the indoor fan 4a are provided in an indoor unit disposed in the room.
  • the indoor unit includes a room temperature sensor 11 for detecting a room temperature and a heat exchanger temperature sensor 12 disposed to the indoor heat exchanger 4 for detecting the condensing temperature of the refrigerant in the indoor heat exchanger 4.
  • the indoor unit has a performance for controlling the entire indoor component including the indoor heat exchanger 4 and the indoor fan 4a in accordance with the signals and the like detected by the room temperature sensor 11 and the heat exchanger temperature sensor 12, respectively.
  • Fig. 2 shows a control system of the air conditioner 1 as a whole including the indoor unit 15 and the outdoor unit 16.
  • the indoor unit 15 which is accommodated in a frame formed by an indoor panel includes an indoor control unit (MCU: multi-control unit) 20 having, for example, a microcomputer mounted thereon to control the indoor unit 15 and the outdoor unit 16 as a whole.
  • the indoor control unit 20 is connected to an AC power source 21 which supplies electric power to the air conditioner 1 by turning on a power switch (not shown) provided in the indoor unit 15 or a power switch button disposed at a remote controller described below. Further, the indoor control unit 20 is electrically connected to a remote controller 22 so that the indoor control unit 20 can receive a command signal to the air conditioner 1 supplied from the remote controller 22.
  • MCU multi-control unit
  • the remote controller 22 is able to transmit an operation command for operating the air conditioner 1 (the indoor unit 15 and the outdoor unit 16) in a desired operating state and an operation stop command to the indoor controller 20. That is, the remote controller 22 can remotely transmit operation mode selection data such as, for example, the cooling mode, the heating mode, a dehumidifying mode and the like, setting data for setting a desired room temperature, an amount of supply air etc., and so forth to the indoor control unit 20 as an operation command. Further, the remote controller 22 can set a timer to the air conditioner 1 so that operation based on the operation mode selecting data and the setting data is executed thereby from a desired time or until a desired time.
  • operation mode selection data such as, for example, the cooling mode, the heating mode, a dehumidifying mode and the like
  • setting data for setting a desired room temperature an amount of supply air etc.
  • the remote controller 22 can set the air conditioner 1 (indoor controller 20) to a timer entering mode for starting the air conditioner 1 at a predetermined time in the future "x minutes past y" (or at a time after a predetermined period of time elapses from the present) and to a timer cutting mode for continuing the operation of the air conditioner 1 until a predetermined time in the future "x minutes past y" (or until a predetermined period of time elapses from the present) and stopping the operation at the predetermined time.
  • the remote controller 22 can transmit a special operation command to the air conditioner 1 (indoor control unit 20) to operate the air conditioner 1 in a preset operation content.
  • This embodiment includes, as the special operation command, a command (automatic operation command) for automatically executing operation at a preset temperature and a preset amount of supplying air without setting the above operation mode and room temperature and a command (quiet sleeping operation command) for executing a quiet sleeping operation to provide a user with comfortable sleeping by preventing the excessive cooling and heating of a room when the user gets a sleep.
  • the remote controller 22 has an automatic operation command switch 22a for transmitting the automatic operation command to the indoor control unit 20 by operating the automatic operation command switch and has a quiet sleeping operation command switch 22b for transmitting the quiet sleeping operation command thereto by operating the quiet sleeping operation command switch 22b.
  • a cooling or heating operation which is set in accordance with the environment such as a room temperature and the like when the user sleeps, is continued for a predetermined time to remove the sleepless state of the user, and, as after the predetermined period of time elapses (the user is in sleep), operation is continued for a predetermined time while keeping a predetermined temperature (which is set by being automatically changed so that the temperature is comfortable to the body of the user and the user is not excessively cooled or heated in sleep and the range of change of the temperature is narrow) with the amount of air supplied into the room which is reduced as compared with a usual amount of supply air so as to prevent the excessive cooling or heating of the room.
  • a predetermined temperature which is set by being automatically changed so that the temperature is comfortable to the body of the user and the user is not excessively cooled or heated in sleep and the range of change of the temperature is narrow
  • the indoor unit 15 includes the room temperature sensor 11 and the heat exchanger temperature sensor 12 mentioned above.
  • the indoor unit 15 also includes a fan motor (FM) 23 for rotating the indoor fan 4a, a speed control circuit 24 capable of variably controlling the rotational speed of the FM 23, a louver motor (LM) 25 for swinging a louver 26 to regulate the direction of wind (cool wind or warm wind) supplied from a blowout port of the indoor unit 15 and a louver drive circuit 27 for driving the LM 25 while controlling the rotational angel thereof.
  • the room temperature sensor 11, the heat exchanger temperature sensor 12, the speed control circuit 24 and the louver drive circuit 27 are connected to the indoor control unit 20, respectively.
  • the indoor unit 15 further includes a non-volatile memory (for example, an EEPROM in the embodiment) 30 and a changeover switch 31 for determining whether the auto-re-start control is executed or not.
  • the changeover switch (for example, an ON/OFF switch) 31 is disposed to the indoor panel or the like of the indoor unit 15 and it is predetermined that when the changeover switch 31 is turned ON, for example, it indicates that the auto-re-start control is executed and when the changeover switch 31 is turned OFF, it indicates that the auto-re-start control is not executed.
  • the indoor unit 15 includes a compulsory operation switch 32 for compulsorily operating the air conditioner 1 on the basis of the data showing the predetermined operation content regardless of the content transmitted from the remote controller 22.
  • the compulsory operation switch for example, a slide switch
  • the compulsory operation switch 32 is also disposed to the indoor panel or the like of the indoor unit 15.
  • operation modes such as, for example, (1) a compulsory automatic operation mode, (2) a compulsory cooling operation mode (in the above compulsory operation modes, an automatic operation or a cooling operation is carried out according to data showing the preset operation content regardless of the operation command transmitted from the remote controller 22) and (3) an ordinary operation mode (operation is carried out on the basis of the operation command transmitted from the remote controller 22) and the like.
  • Usually set is the (3) ordinary operation mode.
  • the outdoor unit 16 which is accommodated in a frame formed by an outdoor panel includes an outdoor control unit 33 having a microcomputer mounted thereon, a drive circuit 34 connected with the outdoor control unit 33 for driving the above compressor 2 according to a control thereof, a fan motor (FM) 35 and an FM drive circuit 36 connected with the outdoor control unit 33 for rotating the outdoor fan 6a on the basis of a control thereof.
  • the outdoor unit also includes the expansion valve 5, the evaporating temperature sensor 9 and the outside air temperature sensor 10 mentioned above are connected with the outdoor control unit 33, respectively.
  • An AC power supply line L is connected to the outdoor control unit 33 of the outdoor unit 16 through the indoor controller 20.
  • the outdoor control unit 33 of the outdoor unit 16 is interconnected to the indoor control unit 20 through a line C so that the indoor control unit 20 can transmit and receive control signals relating to the operation of the air conditioner 1 as a whole through the line C.
  • the indoor control unit 20 of the indoor unit 15 controls the above respective components (the speed control circuit 24 and the like) of the indoor unit 15 and the above respective components (the drive circuit 34 and the like) of the outdoor unit 16 on the basis of the operation command transmitted from the remote controller 22, respectively thereby carrying out air conditioning corresponding to the content of the operation command. Further, when a timer is set, the indoor control unit 20 carries out the operation according to the content set by the timer by controlling the above components of the indoor unit 15 and the above components of the outdoor unit 16, respectively on the basis of the content set by the timer as soon as the time set thereby is reached.
  • the indoor control unit 20 writes the present operation content (the content of the operation command transmitted from the remote controller 22 in the ordinary operation mode) to the EEPROM 30 as data at a necessary timing and, when power supply is interrupted and then recovered, the automatic operation is carried out on the basis of the operation content data written to the EEPROM 30. Further, when the changeover switch 31 is turned OFF, the indoor control unit 20 erases operation content data stored in the EEPROM 30 at a given timing.
  • the indoor control unit 20 judges whether the ordinary operation mode is set or not by referring to the slide position of the compulsory operation switch 32 (step S2).
  • the indoor control unit 20 goes to the processing at step S30 to be described later (Fig. 4).
  • the indoor control unit 20 judges whether the changeover switch 31 is turned ON or not (step S3).
  • the indoor control unit 20 goes to the processing at step S35 (Fig. 5) to be described below.
  • the microcomputer of the indoor control unit 20 is reset again (step S4) and subsequently the indoor control unit 20 judges whether the EEPROM 30 stores operation content data or not (whether there is data or not) referring to the EEPROM 30 (step S5).
  • the indoor control unit 20 judges whether a predetermined period of time (for example, 3 minutes) has elapsed from the energization or not, that is, whether the temperature of the indoor heat exchanger 4 has increased and reached to a heat exchangeable temperature (step S6).
  • a predetermined period of time for example, 3 minutes
  • the indoor control unit 20 repeats the judgment processing at step S6.
  • the indoor control unit 20 starts an air conditioning operation according to the operation content data stored in the EEPROM 30 by controlling the components of the indoor unit 15 and the components of the outdoor unit 16 through the outdoor control unit 33, respectively (step S7).
  • the indoor control unit 20 always judges whether or not a power failure occurs, that is, a power supply from the power source 21 to the air conditioner 1 is interrupted (step S8).
  • the interruption of power supply from the power source 21 thereto occurs (the result of judgment at step S8: YES) whereby the air conditioner 1 stops the air conditioning operation and the power supply from the power source 21 thereto is recovered thereafter (a result of judgment at step S9: YES)
  • the indoor controller 20 returns to the processing at step S1 and repeats the processings at step S1 to step S9.
  • the auto-re-start control can be executed by which the air conditioner 1 can be restarted after the event of the interruption of power supply therefrom and the recovery thereof.
  • the indoor control unit 20 is in a control operation waiting state until an operation command is transmitted from the remote controller 22 (step S10). If an interruption of power supply from the power source 21 to the air conditioner 1 occurs in the waiting state (a result of judgment at step S11: YES) and then power supply is recovered thereafter (a result of judgment at step S12: YES), since there arises a state substantially the same as when the air conditioner 1 is energized, the indoor controller 20 returns to the processing at step S1 and repeats the processings at step S1 to step S5.
  • the indoor control unit 20 judges whether a present operation mode is the ordinary operation mode or not (step S13). Since the present operation mode is the ordinary operation mode, a result of the judgment is YES and the indoor control unit goes to the processing at step S14.
  • the indoor control unit 20 in the operation waiting state judges whether an operation command is transmitted from the remote controller 22 or not (step S14). That is, when the operation command is not transmitted from the remote controller 22 (the result of judgment at step S14: NO), the indoor control unit 20 returns to the processing at step S10 and continues the operation waiting state.
  • the user transmits an operation command including desired operation mode selection data and setting data to the indoor controller 20 by manually operating the remote controller 22.
  • the indoor control unit 20 receives the transmitted operation command (the result of judgment at step S14: YES) and writes the operation content based on the operation command to the EEPROM 30 as data (step S15). Then, the indoor control unit 20 judges whether a predetermined period of time (for example, 3 minutes) has passed from the energization or not, said judgment processing being the same as step S6 (step S16) and when the predetermined period of time has passed, the indoor control unit 20 goes to the processing at step S17.
  • a predetermined period of time for example, 3 minutes
  • the indoor control unit 20 starts the ordinary air conditioning operation according to the content of the operation command from the remote controller 22 by controlling the components (the speed control circuit 24 and the like) of the indoor unit 15 and the components (the compressor drive circuit 34 and the like) of the outdoor unit 16, respectively on the basis of the content of the operation command (step S17).
  • the indoor control unit 20 always judges whether a command for changing the set operation content is transmitted from the remote controller 22 or not (step S18).
  • the indoor control unit 20 receives the transmitted setting change command and renews (updates) the operation content data stored in the EEPROM 30 to the data based on the operation content which corresponds to the setting change command (obtains data of the renewed operation content) so as to carry out the ordinary air conditioning operation according to the setting change command (step S19).
  • the indoor control unit 20 always judges whether or not an interruption of power supply from the power source 21 to the air conditioner 1 occurs (step S20).
  • the indoor control unit 20 automatically executes an auto-re-start control operation. That is, the indoor control unit 20 controls the start of the components of the indoor unit 15 and the components of the outdoor unit 16 through the outdoor control unit 33, respectively according to the data of the renewed operation content written to the EEPROM 30 thereby automatically starting the air conditioning operation corresponding to the renewed operation content (step S22) and goes to the processing at step 26.
  • the indoor control unit 20 controls the start of the components of the indoor unit 15 and the components of the outdoor unit 16 through the outdoor control unit 33, respectively according to the data of the renewed operation content written to the EEPROM 30 thereby automatically starting the air conditioning operation corresponding to the renewed operation content and goes to the processing at step S26.
  • the indoor control unit 20 always judges whether or not an interruption of power supply from the power source 21 to the air conditioner occurs in the ordinary air conditioning operation (step S23).
  • the indoor control unit 20 controls the start of the components of the indoor unit 15 and the components outdoor unit 16, respectively according to the operation content data written to the EEPROM 30 thereby automatically starting the air conditioning operation corresponding to the operation content data (step S25) and goes to the processing at step S26.
  • the indoor control unit 20 controls the start of the components of the indoor unit 15 and the components of the outdoor unit 16, respectively according to the operation content data written to the EEPROM 30 thereby automatically starting the air conditioning operation corresponding to the operation content data and goes to the processing at step S26.
  • the indoor control unit 20 In the ordinary operation by the auto-re-start control according to the data of the renewed operation content data or the operation content data, the indoor control unit 20 always judges whether an operation stop command is transmitted from the remote controller 22 or not (step S26). When it is judged that no stop command is transmitted (the result of judgment at step S26: NO), the indoor control unit 20 returns to the processing at step S18 and continues the ordinary operation.
  • step S26 when the judgment at step S26 is YES, that is, when it is judged that the operation stop command is transmitted, the indoor control unit 20 erases all the data including the operation content data (or the renewed operation content data) written to the EEPROM 30 (step S27), returns to the processing at step S10 and is put to the waiting state. Then, when an operation command is transmitted again from the remote controller 22 in the processing at step S14 through step S11 to step S13, the indoor control unit 20 executes the above processings at S14 to S27 thereby controlling the operation including the auto-re-start control operation.
  • step S2 when the result of judgment at step S2 is NO, that is, when the slide position of the compulsory operation switch 32 is set to the special operation mode (the compulsory automatic operation mode or the compulsory cooling operation mode), the indoor control unit 20 judges whether the slide position indicates the compulsory automatic operation mode or not (Fig. 4; step S30).
  • the indoor control unit 20 starts the compulsory automatic operation by controlling the start of the components of the indoor unit 15 and the components of the outdoor unit 16, respectively on the basis of the operation content, which is determined in advance, corresponding to the compulsory automatic operation mode (step S31) and goes to step S10 and step S11.
  • the indoor control unit 20 starts the compulsory cooling operation by controlling the start of the components of the indoor unit 15 and the components of the outdoor unit 16, respectively on the basis of the operation content, which is determined beforehand, according to the compulsory cooling operation mode (step S32) and goes to step S10 and step S11.
  • the processings at step S11 to step S13 since a present mode is the special operation mode, operation is not controlled according to the operation command from the remote controller 22 at step S14 the following steps (the result of judgment at step S13: NO) and the process goes to the processing at step S1 and repeats the above processings.
  • step S3 when the result of judgment at step S3 is NO, that is, when it is judged that the changeover switch 31 is turned OFF, the indoor control unit 20 judges that the auto-re-start control operation is not carried out and erases all the contents of the EEPROM 30 (Fig. 5; step S35). Then, the indoor control unit 20 judges whether an operation command is transmitted from the remote controller 22 or not (step S36). When it is not transmitted (the result of judgment at step S36: NO), the indoor control unit 20 repeats the judgment processing at step S36.
  • the indoor control unit 20 receives the transmitted operation command and starts the ordinary air conditioning operation according to the content of the operation command from the remote controller 22 by controlling the start of the components of the indoor unit 15 and the components of the outdoor unit 16, respectively based on the operation command after a predetermined period of time elapses by a processing similar to that of step S6 and step S16 (step S37).
  • the indoor control unit 20 always judges whether or not an interruption of power supply from the power source 21 to the air conditioner 1 occurs in the ordinary air conditioning operation and (step S38). That is, when no interruption of power supply therefrom occurs (the result of judgment at step S38: NO), the indoor control unit 20 goes to the processing at step S26 and the indoor control unit 20 executes a processing similar to that of steps S26 and S27.
  • the indoor control unit 20 does not execute the auto-re-start control operation, that is, it does not execute the operation on the basis of the content stored in the EEPROM 30 and is put to a reset state (step S40), whereby the processing is finished.
  • the processing for executing the auto-re-start control (the changeover switch is turned ON, step S4 to step S27) and the processing for not executing the auto-re-start control (the changeover switch is turned OFF, step S35 to step S40) can be selected.
  • the air conditioner responds to the various desires of users, making it possible to improve the degree of satisfaction of the users and the function of the air conditioner in relation to the power supply environment.
  • Fig. 6 shows a control system of an air conditioner 1A as a whole including an indoor unit 15A and an outdoor unit 16A according to a second embodiment.
  • the indoor unit 15A is provided with an indicating unit 40 having an operation lamp 40A for indicating the operation of the air conditioner 1A and an auto-re-start lamp 40B for indicating the auto-re-start operation of the air conditioner 1A and with a buzzer 41 as a warning signal output unit.
  • an indicating unit 40 having an operation lamp 40A for indicating the operation of the air conditioner 1A and an auto-re-start lamp 40B for indicating the auto-re-start operation of the air conditioner 1A and with a buzzer 41 as a warning signal output unit.
  • an indicating unit 40 having an operation lamp 40A for indicating the operation of the air conditioner 1A and an auto-re-start lamp 40B for indicating the auto-re-start operation of the air conditioner 1A and with a buzzer 41 as a warning signal output unit.
  • the operation lamp 40A and the auto-re-start lamp 40B LED or other similar indicating elements are used.
  • the operation lamp 40A, the auto-re-start lamp 40B and the buzzer 41 are connected to the
  • the operation lamp 40A and the auto-restart-lamp 40B are disposed to, for example, the indoor panel or the like of the indoor unit 15A and the auto-restart-lamp 40B is lit under the control of the indoor control unit 20 only when the changeover switch 31 is turned ON (that is, only when it judged that the auto-re-start control operation is executed).
  • the buzzer 41 generates a warning sound under the control of the indoor control unit 20 when the setting of the changeover switch 31 is changed from a previously set state. Note, since the other construction and operation of the second embodiment are the same as those of the first embodiment, the description thereof is omitted.
  • the indoor control unit 20 lights the operation lamp 40A and the auto-re-start lamp 40B of the indicating unit 40 together (Fig. 7; step S17A) and then executes the processings at step S18 and the following steps.
  • the indoor control unit 20 lights only the operation lamp 40A of the indicating unit 40 (Fig. 8; step S37A) and then executes the processings at step S38 and the following steps.
  • the user can easily and instantly know whether the auto-re-start is set or not in the ordinary operation from the state of the auto-re-start lamp 40B (depending upon whether it is lit or not), whereby the degree of satisfaction of the users can be more improved.
  • operation lamps 40C and 40D such as, for example, two LEDs or the like each of which has a different color may be provided as shown in Fig. 9. That is, as shown in Fig. 10, after the ordinary air conditioning operation is started by the processing at step S17 when the changeover switch 31 is turned ON (the state that the auto-re-start operation is executed), the indoor control unit 20 lights only the operation lamp 40C of the indicating unit 40 (step S17B) and then executes the processings at step S18 and the following steps. Further, as shown in Fig.
  • step S37 after the ordinary air conditioning operation is started by the processing at step S37 when the changeover switch 31 is turned OFF (the state that the auto-re-start operation is not executed), the indoor control unit 20 lights only the operation lamp 40D of the indicating unit 40 (step S37B) and then executes the processings at step S38 and the following steps.
  • step S1 Fig. 12
  • step S50 a result of judgment at step S50: YES, that is, the processing at step S50 is started by an interruption processing when the switch 31 is switched
  • step S51 the indoor control unit 20 judges whether a present setting of the changeover switch 31 (for example, OFF) is the same as the setting thereof before it is switched (for example, ON) (step S51).
  • the indoor control unit 20 executes the processings at step S2 and the following steps.
  • step S51 when the judgment at step S51 is NO, that is, when the setting of the switch S31 is changed, the indoor control unit 20 controls causes the buzzer 41 to generate a buzzer sound (warning sound) (step S52) and executes the processing at step S2 and the following steps.
  • the generation of the sound by the buzzer permits the user to confirm from the buzzer sound whether or not the indoor control unit 20 recognizes the change of setting of the changeover switch 31 caused by the switching operation thereof.
  • the changeover switch 31 fails, the failure of it can be easily found and malfunction resulting from the failure of the switch 31 can be avoided.
  • the air conditioner 1A uses the LED lamps as the indicating unit 40, any lamps may be used so long as it can be differently indicated when the auto-re-start control can be executed (the changeover switch is turned ON) and when the auto-re-start control cannot be executed (the changeover switch is turned OFF). Further, the type and number of the indicating unit may be arbitrarily set.
  • the construction of the air conditioner 1A uses the buzzer as the component for outputting the warning sound when the changeover switch 31 is switched, the present invention is not limited thereto but any warning sound output unit may be used so long as it outputs a warming sound.
  • the construction thereof is provided with both the indicating unit 40 and the buzzer 41, it may be provided with any one of them.
  • an air conditioner 1 according to the third embodiment has substantially the same construction as that of the first embodiment, the described thereof is omitted.
  • the embodiment has a feature in the auto-re-start control when a timer is set and since the other operation thereof is substantially the same as that of the first embodiment, the described thereof is omitted.
  • the auto-re-start control when the timer is set first, the auto-re-start control when the timer is set to the timer cutting mode will be described.
  • the user transmits the command (the timer cutting operation command) for stopping the operation of the air conditioner 1 at a predetermined time in the future "x minutes past y" (or at a time after a predetermined period of time passing from the present) to the indoor control unit 20 of the air conditioner 1 by operating a remote controller 22 (Fig. 13; step S60).
  • the indoor control unit 20 starts the operation of the air conditioner (otherwise, continues the operation of the air conditioner when it is in operation at present) according to the operation content according to the transmitted timer cutting operation command (step S61).
  • the indoor control unit 20 always judges whether or not a power failure occurs, that is, a power supply from the power source 21 to the air conditioner 1 is interrupted (step S62).
  • a power supply from the power source 21 to the air conditioner 1 occurs (the result of judgment at step S62: YES) and the power supply is recovered thereafter (a result of judgment at step S63: YES)
  • the indoor control unit 20 judges whether a changeover switch 31 is turned ON or not (step S64).
  • the indoor control unit 20 does not execute the auto-re-start control operation based on the content stored in an EEPROM 30 regardless of whether the changeover switch 31 is turned ON or OFF (in both the cases that the result of judgment at step S64 is YES and NO) and is put to a reset state (step S65, step S66), by which the processing is finished.
  • the user transmits the command (the timer entering operation command) for starting the air conditioner 1 at a predetermined time in the future "x minutes past y" (or at a time after a predetermined period of time passing from the present) to (the indoor control unit 20 of) the air conditioner 1 by operating the remote controller 22 (Fig. 14; step S70).
  • the indoor control unit 20 sets the execution of operation according to the operation content based on the transmitted timer entering operation command (the timer is set to the timer entering mode) and is put to a waiting state (step S71).
  • step S72 judges whether the present time reaches the time at which the timer entering mode is set or not (step S72).
  • the result of judgment at step S72 is NO, that is, when the present time does not yet reach the time at which the timer entering mode is set, since the indoor control unit 20 judges whether an interruption of power supply from the power source 21 to the air conditioner 1 occurs or not (step S73), when the result of judgment at step S73 is NO, that is, an interruption of power supply therefrom does not occur, the indoor control unit 20 returns to the processing at step S71 and is put to a waiting state.
  • step S73 when an interruption of power supply therefrom occurs (the result of judgment at step S73: YES) and the power supply therefrom is recovered thereafter (a result of judgment at step S74: YES), the indoor control unit 20 puts the air conditioner 1 to a reset state without restarting it regardless of whether the changeover switch 31 is turned ON or OFF (step S75) and finishes the processing.
  • step S72 When the result of judgment at step S72 is YES, that is, when the set timer entering time is reached, the indoor control unit 20 starts operation according to the operation content based on the transmitted timer entering operation command (step S76). In the timer entering operation, the indoor control unit 20 judges whether the changeover switch 31 is turned ON or not (step S77).
  • the indoor control unit 20 goes to the processing at step S73 and does not restart the operation even if an interruption of power supply from the power source 21 to the air conditioner 1 occurs and the power supply therefrom is recovered thereafter and is put to a reset state (note, when no,interruption of power supply therefrom occurs, the timer entering operation is continued).
  • step S77 the result of judgment at step S77 is YES, that is, when the changeover switch 31 is turned ON (the auto-re-start control is executed), since the process escapes from the setting of timer entering mode waiting state, the indoor control unit 20 writes the operation content based on the timer entering operation command to the EEPROM 30 as data (step S78).
  • the indoor control unit 20 always judges whether or not an interruption of power supply from the power source 21 to the air conditioner 1 occurs in the timer entering operation (step S79) and when an interruption of power supply therefrom occurs (the result of judgment at step S79: YES) and the power supply is recovered thereafter (a result of judgment at step S80: YES), the indoor control unit 20 automatically starts the air conditioning operation according to the operation content data written to the EEPROM 30 by controlling the components of the indoor unit 15 and the components of the outdoor unit 16, respectively on the basis of the operation content data and finishes the timer operating processing (step S81).
  • the air conditioner 1 since the user does not want to operate the air conditioner 1 during the time in which the timer is set to the timer entering mode, even if an interruption of power supply and the recovery thereof occur during the time therein, the air conditioner 1 is not restarted and put to a reset state regardless of whether the changeover switch 31 is turned ON or OFF (see step S73 - step S75).
  • the indoor control unit 20 writes the operation content to the EEPROM 30 and restarts the air conditioner 1 on the basis of the operation content read out from the EEPROM 30 at the time of the recovery of power supply.
  • the auto-re-start control can be executed by the changeover switch set by the user.
  • the construction of the air conditioner 1 according to a fourth embodiment is substantially the same as that of the first embodiment, the description thereof is omitted.
  • the embodiment has a feature in the auto-re-start control in the quiet sleeping operation among special operations and since the other operation of the embodiment is substantially the same as that of the first embodiment, the description thereof is omitted.
  • the remote controller 22 transmits the quiet sleeping operation command to the indoor control unit 20 of the air conditioner 1 in response to operating the quiet sleeping operation switch 22b by the user(Fig. 15; step S90).
  • the indoor control unit 20 starts operation according to the operation content based on the transmitted quiet sleeping operation command and writes the operation content at the initial mode of the quiet sleeping operation to the EEPROM 30 (step S91), said content of the initial mode of the quiet sleeping operation including a temperature set to avoid excessive cooling and excessive heating after a predetermined period of time passing, an amount of supply air smaller than an ordinary amount thereof and the like and a period of time during which the quiet sleeping operation is continued.
  • the indoor control unit 20 In the quiet sleeping operation, the indoor control unit 20 always judges whether or not a power failure occurs, that is, a power supply from the power source to the air conditioner 1 is interrupted (step S92). When the interruption of power supply from the power source 21 thereto occurs (the result of judgment at step S92: YES) and the power supply is recovered thereafter (a result of judgment at step S93: YES), the indoor control unit 20 judges whether a changeover switch 31 is turned ON or not (step S94).
  • step S94 When the judgment at step S94 is NO, that is, when the changeover switch 31 is turned OFF (the auto-re-start control is not executed), the indoor control unit 20 erases the content of the EEPROM 30 and puts the air conditioner 1 to a reset state without restarting it (step S95).
  • the indoor control unit 20 automatically executes the air conditioning operation according to the operation content data in the initial mode of the quiet sleeping operation written to the EEPROM 30 by controlling the components of an indoor unit 15 and the components of an outdoor unit 16, respectively on the basis of the operation content data in the initial mode of the quiet sleeping operation and finishes the processing (step S96).
  • the air conditioner 1 when an interruption of power supply and the recovery thereof occur in the quiet sleeping operation, the air conditioner 1 is restarted based on the operation content data in the initial mode of the quiet sleeping operation written to the EEPROM 30 only when the changeover switch 31 is turned ON (the auto-re-start control is executed). Whereas, when the changeover switch 31 is turned OFF (the auto-re-start control is not executed), the operation of the air conditioner 1 is compulsorily stopped (the air conditioner 1 is put to a reset state). Therefore, in the quiet sleeping operation, whether the auto-re-start control is executed or not can be set by the user. Further, even if an interruption of power supply occurs in the quiet sleeping operation, since the quiet sleeping operation can be executed again from the initial mode of the quiet sleeping operation by the auto-re-start control, a comfortable quiet sleeping operation can be executed.
  • the present invention is not limited thereto but it is possible that a operation content is preset as an automatic operation mode (in cooling/heating) and when a power supply is recovered, the operation is always started in the operation content according to the automatic operation mode.
  • a volatile memory such as the EEPROM need not be used, whereby a cost can be reduced.
  • the changeover switch 31 is described as the slide switch, the present invention is not limited thereto but various types of a switch such as, for example, a push button switch may be used.
  • the push button switch When the push button switch is particularly used as a modification of the slide switch, whether the ordinary mode is set or the compulsory operation mode (compulsory automatic mode, compulsory cooling mode) is set can be determined depending upon the length of a period of time during which the push button is pushed (push time).
  • Fig. 16 shows the construction of the air conditioner 1B according to a modification when the push button switch is used to select whether the compulsory operation is set or not and whether the auto-re-start control is executed or not.
  • the indoor unit 15B is provided with a push button switch 50 having a compulsory operation setting function and a switching function in place of the compulsory operation switch and the changeover switch in Fig. 2.
  • the push button switch 50 is connected to the indoor control unit 20 and the ordinary operation mode or the compulsory selection mode, the execution or non-execution of the auto-re-start control, and the compulsory automatic operation mode or the compulsory cooling operation mode can be selected and set, respectively depending upon the period of time during which the push button switch 50 is pushed (push time). Since the other construction of the modification is substantially the same as that shown in the above respective embodiments, the described thereof is omitted.
  • the user pushes the push button switch 50 for a predetermined period of time after the execution of the processing at step S1 in the overall operation of the air conditioner 1 shown in Fig. 3.
  • the indoor control unit 20 judges whether (A) a command as to the ordinary mode is issued or (B) a command as to the compulsory operation mode is issued depending upon a push time of the push button switch 50 (Fig. 17; step S100).
  • the indoor control unit 20 judges that the push time indicates (A) the command as to the ordinary mode, the indoor control unit 20 goes to step S101 and further judges whether the push time indicates the execution of the auto-re-start control or not.
  • the indoor control unit 20 goes to the processing at step S4 in Fig. 3 and executes an operation processing accompanied by the auto-re-start control.
  • the indoor control unit 20 goes to the processing at step S35 in Fig. 5 and executes an operation processing which is not accompanied by the auto-re-start control.
  • step S100 When the result of judgment at step S100 is YES, that is, when it is judged that the push time indicates (B) the command as to the compulsory operation, the indoor control unit 20 further goes to step S102 and judges whether the push time indicates (C) the compulsory automatic operation or (D) the compulsory cooling operation.
  • the indoor controller 20 recognizes to execute the compulsory automatic operation (step S103) and moves to the processing at step S31 in Fig. 4 and executes the control for carrying out the compulsory automatic operation.
  • step S104 the indoor controller 20 recognizes to execute the compulsory cooling operation (step S104), goes to the processing at step S32 in Fig. 4 and executes the control for carrying out the compulsory cooling operation.
  • the first to fourth embodiments dispose the changeover switch 31 in the indoor unit 15 (the indoor panel or the like), the present invention is not limited thereto but it may be disposed to the remote controller 22 and turned ON/OFF by the operation of the remote controller 22.
  • the EEPROM 30 is used as the non-volatile memory
  • the present invention is not limited thereto but any memory may be used so long as it is a non-volatile memory capable of writing and erasing data.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Air Conditioning Control Device (AREA)

Claims (2)

  1. Dispositif de conditionnement d'air (1) ayant une fonction consistant à redémarrer automatiquement une opération de conditionnement d'air prédéterminée dans un cas où une alimentation électrique allant d'une source de courant (21) à un dispositif de conditionnement d'air (1) est coupée et qu'ensuite l'alimentation électrique de la source de courant (21) à celui-ci est rétablie, le dispositif de conditionnement d'air (1) comprenant :
    des moyens de réglage de redémarrage automatique pour déterminer de manière commutative si l'opération de redémarrage automatique est réalisée ou pas ;
    des moyens d'exécution dotés d'éléments de cycle réfrigérant raccordés de manière annulaire entre eux pour faire circuler un réfrigérant afin d'exécuter une opération de conditionnement d'air, caractérisé en ce que le dispositif de conditionnement d'air (1) comprend en outre :
    des moyens de réglage de programmateur à horloge pour régler un programmateur à horloge de sorte que les moyens d'exécution exécutent une opération de conditionnement d'air prédéterminée jusqu'à un temps prédéterminé et arrêtent l'opération de conditionnement d'air prédéterminée lorsque le temps prédéterminé est atteint ;
    des moyens de décision pour décider si la coupure de l'alimentation électrique et le rétablissement de celle-ci s'est produit ou pas, alors que le programmateur à horloge est réglé par les moyens de réglage du programmateur à horloge ; et
    des moyens de commande pour commander les moyens d'exécution, lorsque la coupure de l'alimentation électrique et le rétablissement de celle-ci se produit lorsque le programmateur à horloge est réglé par la décision des moyens de décision, afin d'empêcher l'opération de redémarrage automatique si l'opération de redémarrage automatique est réalisée ou pas par les moyens de réglage du redémarrage automatique.
  2. Dispositif de conditionnement d'air (1) selon la revendication 1, caractérisé en outre en ce qu'il comprend des moyens d'indication pour indiquer de manière pouvant être distinguée si l'opération de redémarrage automatique est réalisée ou pas, lesdits moyens d'indication comprenant une lampe d'indication (40B) ayant une couleur prédéterminée, qui est allumée uniquement lorsque l'opération de redémarrage automatique est réalisée et une lampe d'indication d'opération (40A) ayant une couleur prédéterminée, qui est allumée alors que les moyens d'exécution exécutent l'opération de conditionnement d'air, ladite couleur de la lampe d'indication d'opération (40A) étant différente de la couleur de la lampe d'indication (40B).
EP97305776A 1996-10-17 1997-07-31 Dispositif de conditionnement d'air Expired - Lifetime EP0837289B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP03003271.8A EP1314934B8 (fr) 1996-10-17 1997-07-31 Conditionneur d'air
EP03003272.6A EP1314935B8 (fr) 1996-10-17 1997-07-31 Conditionneur d'air

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP8274615A JPH10122635A (ja) 1996-10-17 1996-10-17 空気調和機
JP274615/96 1996-10-17
JP27461596 1996-10-17

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP03003271.8A Division EP1314934B8 (fr) 1996-10-17 1997-07-31 Conditionneur d'air
EP03003272.6A Division EP1314935B8 (fr) 1996-10-17 1997-07-31 Conditionneur d'air

Publications (3)

Publication Number Publication Date
EP0837289A2 EP0837289A2 (fr) 1998-04-22
EP0837289A3 EP0837289A3 (fr) 2000-04-05
EP0837289B1 true EP0837289B1 (fr) 2004-04-07

Family

ID=17544204

Family Applications (3)

Application Number Title Priority Date Filing Date
EP03003271.8A Expired - Lifetime EP1314934B8 (fr) 1996-10-17 1997-07-31 Conditionneur d'air
EP97305776A Expired - Lifetime EP0837289B1 (fr) 1996-10-17 1997-07-31 Dispositif de conditionnement d'air
EP03003272.6A Expired - Lifetime EP1314935B8 (fr) 1996-10-17 1997-07-31 Conditionneur d'air

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP03003271.8A Expired - Lifetime EP1314934B8 (fr) 1996-10-17 1997-07-31 Conditionneur d'air

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03003272.6A Expired - Lifetime EP1314935B8 (fr) 1996-10-17 1997-07-31 Conditionneur d'air

Country Status (6)

Country Link
EP (3) EP1314934B8 (fr)
JP (1) JPH10122635A (fr)
KR (1) KR100249424B1 (fr)
CN (1) CN1109857C (fr)
ES (2) ES2219735T3 (fr)
TW (1) TW414309U (fr)

Cited By (1)

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US20100011788A1 (en) * 2006-09-12 2010-01-21 Alexander Lifson Off-season start-ups to improve reliability of refrigerant system

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KR100281022B1 (ko) * 1998-06-18 2001-02-01 윤종용 공조기기 및 그의 제어방법
ES2255771T3 (es) * 1999-02-16 2006-07-01 Matsushita Electric Industrial Co., Ltd. Procedimiento de control para sistema acondicionador de aire y sistema de climatizacion.
JP4297793B2 (ja) 2004-01-14 2009-07-15 三洋電機株式会社 空気調和装置
JP3861918B2 (ja) * 2004-11-30 2006-12-27 ダイキン工業株式会社 空気調和機
JP4580786B2 (ja) * 2005-03-11 2010-11-17 東芝キヤリア株式会社 空気調和機及びシェルタ
CN101625544B (zh) * 2008-07-07 2014-08-20 Tcl集团股份有限公司 一种空调器断电恢复系统及方法
CN101982706B (zh) * 2010-10-12 2013-01-09 上海三电汽车空调有限公司 外控压缩机自动空调模拟控制器系统
CN102538154A (zh) * 2011-10-28 2012-07-04 宁波奥克斯空调有限公司 一种节能空调
JP2014226303A (ja) * 2013-05-22 2014-12-08 シャープ株式会社 洗濯乾燥機
CN106765937B (zh) * 2016-12-15 2019-12-20 广东美的制冷设备有限公司 空调器及其睡眠控制方法
WO2021010956A1 (fr) * 2019-07-15 2021-01-21 Ecoer Inc. Système de pompe à chaleur et procédé de commande
CN110410935A (zh) * 2019-08-09 2019-11-05 宁波奥克斯电气股份有限公司 一种空调掉电自动开机的控制方法
CN114198862B (zh) * 2021-11-26 2023-02-03 青岛海尔空调电子有限公司 空调器控制方法、控制装置及空调器

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JPH07208789A (ja) * 1994-01-17 1995-08-11 Hitachi Ltd 空気調和装置
JPH08178391A (ja) * 1994-12-28 1996-07-12 Matsushita Electric Ind Co Ltd 空気調和機の制御装置

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Publication number Priority date Publication date Assignee Title
US20100011788A1 (en) * 2006-09-12 2010-01-21 Alexander Lifson Off-season start-ups to improve reliability of refrigerant system

Also Published As

Publication number Publication date
EP1314935A3 (fr) 2006-08-16
EP1314934A3 (fr) 2006-08-16
ES2431546T3 (es) 2013-11-26
EP1314934A2 (fr) 2003-05-28
ES2219735T3 (es) 2004-12-01
CN1109857C (zh) 2003-05-28
CN1180816A (zh) 1998-05-06
JPH10122635A (ja) 1998-05-15
TW414309U (en) 2000-12-01
EP1314935A2 (fr) 2003-05-28
EP0837289A2 (fr) 1998-04-22
EP1314934B8 (fr) 2013-09-11
EP1314934B1 (fr) 2013-07-17
KR19980032257A (ko) 1998-07-25
EP1314935B1 (fr) 2013-07-10
EP1314935B8 (fr) 2013-09-11
EP0837289A3 (fr) 2000-04-05
KR100249424B1 (ko) 2000-04-01

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