JP2002228233A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP2002228233A JP2002228233A JP2001018190A JP2001018190A JP2002228233A JP 2002228233 A JP2002228233 A JP 2002228233A JP 2001018190 A JP2001018190 A JP 2001018190A JP 2001018190 A JP2001018190 A JP 2001018190A JP 2002228233 A JP2002228233 A JP 2002228233A
- Authority
- JP
- Japan
- Prior art keywords
- indoor
- compressor
- signal
- air conditioner
- temperature
- 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.)
- Withdrawn
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ヒートポンプ式空
気調和機の運転制御方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the operation of a heat pump type air conditioner.
【０００２】[0002]
【従来の技術】従来、この種のヒートポンプ式空気調和
機の運転制御方法について、図面とともに説明する。2. Description of the Related Art A conventional operation control method for a heat pump type air conditioner will be described with reference to the drawings.
【０００３】図２は、従来からあるヒートポンプ式空気
調和機の冷凍サイクル図を示す。同図において、冷媒
は、圧縮機１を吐出された後四方弁２を通過して室外側
熱交換器３で凝縮し、キャピラリーチューブ４で減圧さ
れ、室内側熱交換器５で蒸発し、四方弁２を通過して圧
縮機１に戻る構成となっている。FIG. 2 shows a refrigeration cycle diagram of a conventional heat pump type air conditioner. In FIG. 1, after the refrigerant is discharged from the compressor 1, it passes through the four-way valve 2, condenses in the outdoor heat exchanger 3, is decompressed in the capillary tube 4, evaporates in the indoor heat exchanger 5, It is configured to pass through the valve 2 and return to the compressor 1.
【０００４】このヒートポンプ式空気調和機は、常時、
室内側吸い込み空気温度Ｔａを室内側吸い込み空気温度
検出センサー１１で検知しており、設定温度とＴａの差
（これ以降△Ｔ＝Ｔａ−設定温度、で説明する。）に応
じて圧縮機１を運転したり停止したりする運転制御方法
となっている。[0004] This heat pump type air conditioner always has
The indoor-side intake air temperature Ta is detected by the indoor-side intake air temperature detection sensor 11, and the compressor 1 is operated in accordance with the difference between the set temperature and Ta (hereinafter described as ΔT = Ta-set temperature). It is an operation control method of starting and stopping.
【０００５】暖房運転時、室内側吸い込み空気温度Ｔａ
が徐々に上昇し、設定温度より室内側吸い込み空気温度
Ｔａが高くなった時に圧縮機１が停止してサーモオフす
る。その後圧縮機停止により設定温度より室内側吸い込
み空気温度Ｔａが低くなり、同時に圧縮機の停止時間が
所定時間になると圧縮機１が運転し始めるサーモオン
（サーモオフ終了がサーモオンの開始）とが設定されて
いる。During the heating operation, the indoor side intake air temperature Ta
Gradually rises, and when the indoor-side suction air temperature Ta becomes higher than the set temperature, the compressor 1 is stopped and thermo-off is performed. Thereafter, when the compressor is stopped, the indoor suction air temperature Ta becomes lower than the set temperature, and at the same time, a thermo-on state in which the compressor 1 starts operating when the stop time of the compressor reaches a predetermined time (a thermo-off end is a thermo-on start) is set. I have.
【０００６】一方、室内側ファン６の風量は室内側熱交
換器温度検出センサー１２により検出された室内熱交換
器配管温度Ｔｈに応じて風量変化および風向変化する制
御となっており、サーモオフ時に圧縮機１が運転／停止
したことが検知されて、室内側ファンの回転は所定時間
を設けて、室内側吸い込み空気温度Ｔａを室内側吸い込
み空気温度検出センサー１１で正確に検知するため、断
続に運転することが設定されている。これは「コールド
ドラフト制御」と呼ばれる制御方法である。On the other hand, the air flow of the indoor fan 6 is controlled to change the air flow and the wind direction in accordance with the indoor heat exchanger pipe temperature Th detected by the indoor heat exchanger temperature detection sensor 12, and the air flow is compressed when the thermostat is turned off. When the operation / stop of the unit 1 is detected, the rotation of the indoor fan is provided for a predetermined time, and the indoor suction air temperature Ta is accurately detected by the indoor suction air temperature detection sensor 11, so that the operation is intermittent. Is set to be. This is a control method called “cold draft control”.
【０００７】図３は従来のコールドドラフト制御方法を
示すものである。暖房運転の通常制御中は、圧縮機１が
ＯＮ、室内側ファン６の風量および風向は設定風量及び
風向となっている。FIG. 3 shows a conventional cold draft control method. During normal control of the heating operation, the compressor 1 is ON, and the air volume and the air direction of the indoor fan 6 are the set air volume and the air direction.
【０００８】△Ｔ＞２〔ｄｅｇ〕になると、圧縮機１が
ＯＦＦとなる。圧縮機１が停止したことが検知され、室
内側ファン６の回転は３０秒間風速Ｓｌｏで運転した
後、１２０秒間停止する。When ΔT> 2 [deg], the compressor 1 is turned off. It is detected that the compressor 1 has stopped, and the rotation of the indoor fan 6 is operated at the wind speed Slo for 30 seconds and then stopped for 120 seconds.
【０００９】その後、室内側ファンの回転は風速Ｓｌｏ
で、３０秒間ＯＮ、３０秒間ＯＦＦの断続運転に変更さ
れる。そして、△Ｔ＜２〔ｄｅｇ〕になると圧縮機１が
ＯＮとなり、室内熱交換器配管温度Ｔｈに応じて風量が
変化する。Thereafter, the rotation of the indoor fan is changed to the wind speed Slo.
The operation is changed to the intermittent operation of ON for 30 seconds and OFF for 30 seconds. When ΔT <2 [deg], the compressor 1 is turned on, and the air volume changes according to the indoor heat exchanger pipe temperature Th.
【００１０】[0010]
【発明が解決しようとする課題】しかしながら、上記従
来のヒートポンプ式空気調和機の運転制御方法では、以
下のような課題の発生する場合があった。However, the above-described conventional heat pump air conditioner operation control method may have the following problems.
【００１１】すなわち、実使用時サーモオフの時に室内
側ファンを３０秒間断続に運転／停止を繰り返し運転し
ている時、室内ファンモーターはＡＣモーターを使用し
ているため、風速Ｓｌｏで運転する時の運転回転数は８
００ｒｐｍもあり、運転時と停止時の騒音差が激しく使
用者に不快感を与えることがあり、連続運転をしながら
低騒音化が要求されていた。That is, when the indoor fan is repeatedly operated / stopped for 30 seconds intermittently when the thermostat is turned off during actual use, and the indoor fan motor uses an AC motor, the indoor fan motor operates at the wind speed Slo. Operating speed is 8
There is also a speed of 00 rpm, and the difference in noise between driving and stopping is so severe that the user may feel uncomfortable. Therefore, it has been required to reduce noise while operating continuously.
【００１２】本発明は、このような従来の課題を解決す
るものであり、連続運転しながらの低騒音化の運転制御
方法を提供することを目的とする。An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide an operation control method for reducing noise while performing continuous operation.
【００１３】[0013]
【課題を解決するための手段】上記課題を解決するため
に本発明は、設定温度より室内側吸い込み空気温度が高
く圧縮機停止するサーモオフ開始して、コールドドラフ
ト制御中、室内側ファンの回転において、断続的に運転
／停止を繰り返し、また、運転ＯＮ信号の所定の回転数
に達しない時点において、ＯＦＦ信号を発する構成のヒ
ートポンプ式空気調和機の運転制御方法を実施するもの
である。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method of starting the thermo-off in which the indoor suction air temperature is higher than a set temperature and stopping the compressor, and controlling the rotation of the indoor fan during the cold draft control. The present invention implements an operation control method of a heat pump type air conditioner configured to intermittently repeat operation / stop and to issue an OFF signal when a predetermined rotation speed of an operation ON signal is not reached.
【００１４】このサーモオフ開始時、すなわち圧縮機停
止時に室内側ファンの回転において、断続的に運転／停
止を繰り返す。この繰り返す運転は、運転ＯＮ信号の所
定の回転数に達しない時点においてＯＦＦ信号を発し、
室内ファンの運転回転数は完全に設定回転数に到達する
ことはなく低回転数で運転する。When the thermo-off is started, that is, when the compressor is stopped, the operation / stop is intermittently repeated when the indoor fan rotates. This repetitive operation issues an OFF signal at a point in time when the predetermined rotation speed of the operation ON signal is not reached,
The operation speed of the indoor fan does not completely reach the set speed, and the indoor fan operates at a low speed.
【００１５】その低回転数で運転することにより、運転
時と停止時の擬音差はほとんどなく、室内側吸い込み空
気温度を十分検知する上で、使用者に不快感を与えるこ
とはなくなっていて、断続運転ではなく、低騒音連続運
転のフィーリングを実現することができる。By operating at the low rotational speed, there is almost no difference in the onset sound between the time of operation and the time of stop, and the user does not feel uncomfortable when sufficiently detecting the temperature of the air sucked indoors. It is possible to realize a feeling of low noise continuous operation instead of intermittent operation.
【００１６】上記制御によって、サーモオフ開始後の圧
縮機が停止する際に、コールドドラフト制御中、室内側
ファン回転は断続的に運転／停止を繰り返し、かつ、運
転ＯＮ信号の所定の回転数に達しない時点において、Ｏ
ＦＦ信号を発する構成のヒートポンプ式空気調和機の運
転制御方法を実施することにより、低膜音連続運転のフ
ィーリングを実現することができる。According to the above control, when the compressor is stopped after the start of thermo-off, during the cold draft control, the rotation of the indoor fan repeats the operation / stop intermittently and reaches the predetermined rotation number of the operation ON signal. At the point when not
By implementing the operation control method of the heat pump type air conditioner configured to emit the FF signal, it is possible to realize the feeling of the low film sound continuous operation.
【００１７】[0017]
【発明の実施の形態】本願発明は、圧縮機、四方弁、室
外側熱交換器、減圧器、室内側熱交換器を環状に接続し
て冷凍サイクルを構成し、設定温度より室内側吸い込み
空気温度が高く前記圧縮機停止するサーモオフ時間中室
内側ファンの回転において、断続的に運転／停止を繰り
返し、また運転ＯＮ信号の所定の回転数に達しない時点
において、ＯＦＦ信号を発する構成のヒートポンプ式空
気調和機の運転制御方法である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides a refrigeration cycle by connecting a compressor, a four-way valve, an outdoor heat exchanger, a decompressor, and an indoor heat exchanger in a ring, and the indoor suction air is set based on a set temperature. A heat pump type having a configuration in which the operation / stop is intermittently repeated during the rotation of the indoor side fan during the thermo-off time when the temperature is high and the compressor is stopped, and an OFF signal is generated at a time when the predetermined rotation number of the operation ON signal is not reached. It is an operation control method of an air conditioner.
【００１８】この断続的に運転／停止を繰り返す運転方
法とは、運転ＯＮ信号の所定の回転数に達しない時点に
おいて、ＯＦＦ信号を発し、室内ファンの運転回転数は
完全に設定回転数に到達することはなく、低回転数で運
転する。その低回転数で運転することにより、運転時と
停止時の膜音差はほとんどなく、室内側吸い込み空気温
度を十分検知する上で、使用者に不快感を与えることは
なくなっていて、断続運転ではなく、低擬音連続運転の
フィーリングを実現することができる。The operation method in which the operation / stop is repeated intermittently means that when the operation ON signal does not reach a predetermined rotation speed, an OFF signal is issued and the operation speed of the indoor fan completely reaches the set rotation speed. And run at low speed. By operating at the low rotation speed, there is almost no difference in membrane sound between operation and stop, and it does not give the user discomfort in sufficiently detecting the indoor suction air temperature. Instead, the feeling of low onomatopoeic continuous operation can be realized.
【００１９】以下、本発明の一つの実施の形態について
図面を参頗して説明する。Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
【００２０】図２は本発明の実施の形態１を説明するた
めのヒートポンプ式空気調和機の冷凍サイクル図を示
す。図１において、冷媒の流れは従来のものと同じため
省略する。FIG. 2 is a refrigeration cycle diagram of a heat pump type air conditioner for explaining Embodiment 1 of the present invention. In FIG. 1, the flow of the refrigerant is the same as that of the conventional one, so that the description is omitted.
【００２１】本実施の形態によれば、圧縮機１、四方弁
２、室外側熱交換器３、減圧器４、室内側熱交線器５を
環状に接続して冷凍サイクルを構成し、設定温度より室
内側吸い込み空気温度が高く圧縮機１が停止するサーモ
オフ開始と同時に、室内側ファン６の回転において、断
続的に運転／停止を繰り返し、かつ、運転ＯＮ信号の所
定の回転数に達しない時点において、ＯＦＦ信号を発す
る。図３は本実施の形態における制御方法を示すもので
ある。According to the present embodiment, the compressor 1, the four-way valve 2, the outdoor heat exchanger 3, the pressure reducer 4, and the indoor heat exchanger 5 are connected in a ring to constitute a refrigeration cycle. At the same time as the start of the thermo-off operation, in which the indoor side intake air temperature is higher than the temperature and the compressor 1 stops, the operation of the indoor side fan 6 is intermittently repeated in the rotation of the indoor side fan 6 and does not reach the predetermined rotation number of the operation ON signal. At the time, an OFF signal is issued. FIG. 3 shows a control method according to the present embodiment.
【００２２】圧縮機１はサーモオフやサーモオンと関連
する設定温度と室内側吸い込み空気温度の差△Ｔ（＝設
定温度一室内側吸い込み空気温度）に応じて制御されて
いるのに対し、室内側ファン６の風量制御は室内側配管
温度により制御されている。The compressor 1 is controlled in accordance with the difference ΔT between the set temperature related to the thermo-off and the thermo-on and the indoor suction air temperature (= set temperature / indoor suction air temperature), whereas the indoor fan is controlled. The air volume control of 6 is controlled by the indoor pipe temperature.
【００２３】設定温度より室内側吸い込み空気温度が高
く前記圧縮機停止するサーモオフ時間中に、室内側ファ
ンの回転は３０秒間風速Ｓｌｏで運転した後、１２０秒
間停止する。その後、室内側ファンの回転は風速Ｓｌｏ
で、１．５秒間ＯＮ、５．５秒間ＯＦＦの断続運転に変
更される。During the thermo-off time during which the indoor suction air temperature is higher than the set temperature and the compressor is stopped, the rotation of the indoor fan is operated at the wind speed Slo for 30 seconds and then stopped for 120 seconds. Thereafter, the rotation of the indoor fan is changed to the wind speed Slo.
Is changed to intermittent operation of ON for 1.5 seconds and OFF for 5.5 seconds.
【００２４】この運転制御方法によれば、圧縮機停止時
に室内側ファンはＳｌｏで断続に運転し、風速Ｓｌｏで
１．５秒間だけ運転して、運転ＯＮ信号の所定の回転数
に達しない時点で、ＯＦＦ信号を発するため、室内ファ
ンの運転回転数は完全に設定回転数に到達することはな
く、実際に３００ｒｐｍぐらいで運転している。According to this operation control method, when the compressor is stopped, the indoor fan is operated intermittently at Slo, is operated at the wind speed Slo for only 1.5 seconds, and does not reach the predetermined rotation speed of the operation ON signal. Since the OFF signal is issued, the operating speed of the indoor fan does not completely reach the set speed, and the indoor fan is actually operated at about 300 rpm.
【００２５】その低回転数で運転することにより、運転
時と停止時の騒音差はほとんどなく、室内側吸い込み空
気温度を十分検知する上で、使用者に不快感を与えるこ
とはなくなつている。また、停止時間は５．５秒間しか
ないので、断続運転ではなく、低騒音の連続運転のフィ
ーリングを実現することができる。By operating at the low rotation speed, there is almost no noise difference between the operation and the stop, and the user does not feel uncomfortable in sufficiently detecting the temperature of the indoor suction air. . Further, since the stop time is only 5.5 seconds, a feeling of continuous operation with low noise, not intermittent operation, can be realized.
【００２６】[0026]
【発明の効果】上記実施の形態から明らかなように、請
求項１に記載の発明は、圧縮機１はサーモオフやサーモ
オンと関連する設定温度と室内側吸い込み空気温度の差
△Ｔ（＝設定温度−室内側吸い込み空気温度）に応じて
制御されているのに対し、室内側ファン６の風量制御は
室内側配管温度により制御されている。As is apparent from the above embodiment, according to the first aspect of the present invention, the compressor 1 has a difference ΔT (= set temperature) between the set temperature related to thermo-off or thermo-on and the indoor side intake air temperature. −Indoor side air temperature), while the air volume control of the indoor fan 6 is controlled by the indoor side pipe temperature.
【００２７】設定温度より室内側吸い込み空気温度が高
く前記圧縮機停止するサーモオフ時間中に、室内側ファ
ンの回転において、断続的に運転／停止を繰り返し、か
つ、運転ＯＮ信号の所定の回転数に達しない時点で、Ｏ
ＦＦ信号を発する運転制御方法である。During the thermo-off time during which the compressor is stopped, the operation of the indoor fan is intermittently repeated during the thermo-off time during which the compressor is stopped, and the operation is stopped at a predetermined rotation speed of the operation ON signal. At that point, O
This is an operation control method for generating an FF signal.
【００２８】この断続的に運転／停止を繰り返す運転方
法とは、運転ＯＮ信号の所定の回転数に達しない時点に
おいて、ＯＦＦ信号を発し、室内ファンの運転回転数は
完全に設定回転数に到達することはなく、低回転数で運
転する。その低回転数で運転することにより、運転時と
停止時の騒音差はほとんどなく、室内側吸い込み空気温
度を十分検知する上で、使用者に不快感を与えることは
なくなっていて、断続運転ではなく、低館音連続運転の
フィーリングを実現することができる。The operation method in which the operation / stop is repeated intermittently means that when the operation ON signal does not reach a predetermined rotation speed, an OFF signal is issued and the operation speed of the indoor fan completely reaches the set rotation speed. And run at low speed. By operating at the low rotation speed, there is almost no noise difference between the operation and the stop, and it does not give the user discomfort in sufficiently detecting the indoor suction air temperature. Therefore, it is possible to realize a feeling of continuous low-pitched sound operation.
【図１】本願発明の空気調和機のファン及び圧縮機の制
御概念図FIG. 1 is a control conceptual diagram of a fan and a compressor of an air conditioner of the present invention.
【図２】ヒートポンプ式空気調和機の冷凍サイクル構成
概念図FIG. 2 is a conceptual diagram of a refrigeration cycle of a heat pump type air conditioner.
【図３】従来の空気調和機のコールドドラフト時のファ
ン及び圧縮機の制御概念図FIG. 3 is a control conceptual diagram of a fan and a compressor during a cold draft of a conventional air conditioner.
１ 圧縮機 ２ 四方弁 ３ 室外側熱交換器 ４ キャピラリーチューブ ５ 室内側熱交換器 ６ 室内側送風ファン １１ 室内側吸い込み空気温度検出センサー １２ 室内側熱交換器温度検出センサー DESCRIPTION OF SYMBOLS 1 Compressor 2 Four-way valve 3 Outdoor heat exchanger 4 Capillary tube 5 Indoor heat exchanger 6 Indoor blower fan 11 Indoor suction air temperature detection sensor 12 Indoor heat exchanger temperature detection sensor
Claims (2)
器、室内側熱交換器を環状に接続して構成した冷凍サイ
クルにおいて、暖房運転時において室内側吸い込み空気
温度が予め設定した設定温度より高くなり前記圧縮機を
停止させるサーモオフ制御の期間中室内ファン回転を断
続的に運転／停止を繰り返す制御を行うことを特徴とす
る空気調和機。In a refrigeration cycle configured by connecting a compressor, a four-way valve, an outdoor heat exchanger, a decompressor, and an indoor heat exchanger in a ring shape, the indoor suction air temperature is preset during a heating operation. An air conditioner characterized by performing a control for intermittently repeating the operation / stop of the indoor fan rotation during a thermo-off control for stopping the compressor when the temperature becomes higher than a set temperature.
時点において、ＯＦＦ信号を発するようにしたことを特
徴とする請求項１に記載の空気調和機。2. The air conditioner according to claim 1, wherein an OFF signal is issued at a point in time when the operation ON signal does not reach a predetermined rotation speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001018190A JP2002228233A (en) | 2001-01-26 | 2001-01-26 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001018190A JP2002228233A (en) | 2001-01-26 | 2001-01-26 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002228233A true JP2002228233A (en) | 2002-08-14 |
Family
ID=18884248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001018190A Withdrawn JP2002228233A (en) | 2001-01-26 | 2001-01-26 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002228233A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7017342B2 (en) | 2003-09-10 | 2006-03-28 | Hitachi Koki Co., Ltd. | Air compressor and control method therefor |
| JP2010144958A (en) * | 2008-12-16 | 2010-07-01 | Mitsubishi Electric Corp | Air conditioner |
-
2001
- 2001-01-26 JP JP2001018190A patent/JP2002228233A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7017342B2 (en) | 2003-09-10 | 2006-03-28 | Hitachi Koki Co., Ltd. | Air compressor and control method therefor |
| CN100396923C (en) * | 2003-09-10 | 2008-06-25 | 日立工机株式会社 | Air compressor and control method therefor |
| JP2010144958A (en) * | 2008-12-16 | 2010-07-01 | Mitsubishi Electric Corp | Air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW200537059A (en) | Chiller sound reduction control system and method | |
| JP2004233045A (en) | Healthy dehumidification operating method for air conditioner | |
| JP2008101894A (en) | Air conditioner and control method therefor | |
| JP2009030878A (en) | Air conditioner | |
| JP2006207932A (en) | Air conditioner | |
| JP2009103392A (en) | Air conditioner | |
| JP2000179916A (en) | Method for controllilng wind direction of air conditioner | |
| JP2003042515A (en) | Device and method for controlling vane of a ceiling air conditioner | |
| JP2002228233A (en) | Air conditioner | |
| KR20090069995A (en) | Method for driving silentness of air conditionner by controllng speed of fan moter for indoor unit | |
| JPH10253136A (en) | Air conditioner | |
| JP3378757B2 (en) | Control device for air conditioner | |
| JPH10103739A (en) | Air conditioner | |
| JP2004036967A (en) | Control method of air conditioner | |
| JP2011106745A (en) | Outdoor unit of air conditioner | |
| JP2004076973A (en) | Air conditioner and its control method | |
| KR20070066585A (en) | Air-conditioner and method for the same | |
| JP7227103B2 (en) | air conditioner | |
| JP2006194552A (en) | Air conditioner | |
| JP2001280675A (en) | Method of controlling air conditioner | |
| JP3158889B2 (en) | Heat pump type air conditioner | |
| JP2017180893A (en) | Air conditioner | |
| JP3167566B2 (en) | Air conditioner | |
| JPH10246518A (en) | Air conditioner | |
| JP2005180842A (en) | Outdoor unit of air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20070827 |
|
| RD01 | Notification of change of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7421 Effective date: 20070912 |
|
| A761 | Written withdrawal of application |
Free format text: JAPANESE INTERMEDIATE CODE: A761 Effective date: 20090409 |