JP3109502B2 - Refrigerant recovery method and refrigerant recovery device - Google Patents
Refrigerant recovery method and refrigerant recovery deviceInfo
- Publication number
- JP3109502B2 JP3109502B2 JP10373502A JP37350298A JP3109502B2 JP 3109502 B2 JP3109502 B2 JP 3109502B2 JP 10373502 A JP10373502 A JP 10373502A JP 37350298 A JP37350298 A JP 37350298A JP 3109502 B2 JP3109502 B2 JP 3109502B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- refrigerant
- compressor
- outside air
- refrigerant recovery
- 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 - Fee Related
Links
Landscapes
- Air Conditioning Control Device (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、冷媒回収方法お
よび冷媒回収装置に関する。[0001] The present invention relates to a refrigerant recovery method and a refrigerant recovery apparatus.
【０００２】[0002]
【従来の技術】従来、冷凍機を現地に据付けた状態での
冷媒回収においても、廃棄施設内での冷媒回収において
も、冷凍機油の中に冷媒が多量に寝込んだ状態で、冷媒
が回収されていた。このため、冷媒回収率が非常に悪い
状態で、冷凍機が解体されることとなり、未回収の冷媒
が大気中に多量に放出されることとなる。2. Description of the Related Art Conventionally, refrigerant has been collected in a state in which a large amount of refrigerant is laid in the refrigerant oil, even when the refrigerant is collected in a state where a refrigerator is installed on site or in a disposal facility. I was For this reason, the refrigerator is dismantled in a state where the refrigerant recovery rate is extremely poor, and a large amount of unrecovered refrigerant is released into the atmosphere.
【０００３】[0003]
【発明が解決しようとする課題】そこで、この発明の目
的は、冷媒回収率を向上できる冷媒回収方法および冷媒
回収装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a refrigerant recovery method and a refrigerant recovery apparatus which can improve the refrigerant recovery rate.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するた
め、請求項１の発明の冷媒回収方法は、冷媒回収対象の
圧縮機の吐出管温度が所定温度以上、かつ、外気温度が
設定温度以上であるときに、上記冷媒回収対象のポンプ
ダウン運転をしないで、上記冷媒回収対象から冷媒を回
収し、上記圧縮機の吐出管温度が上記所定温度以上、か
つ、外気温度が設定温度未満であるときに、上記冷媒回
収対象のポンプダウン運転をしてから、上記冷媒回収対
象から冷媒を回収することを特徴としている。According to a first aspect of the present invention, there is provided a refrigerant recovery method, wherein a discharge pipe temperature of a compressor from which a refrigerant is to be recovered is higher than a predetermined temperature and an outside air temperature is higher than a predetermined temperature. When the refrigerant recovery target is not pumped down, the refrigerant is recovered from the refrigerant recovery target, and the discharge pipe temperature of the compressor is equal to or higher than the predetermined temperature, and the outside air temperature is lower than a set temperature. In some cases, after performing the pump-down operation of the refrigerant recovery target, the refrigerant is recovered from the refrigerant recovery target.
【０００５】圧縮機の吐出管温度が所定温度以上で、か
つ、外気温度が設定温度以上である場合には、室外熱交
換器内の冷媒がガス相で高圧になり、冷媒が冷凍機油に
ガス相で溶解する。したがって、この場合、ポンプダウ
ン運転を行うとかえって、冷凍機油からガス相の冷媒を
引き出すのに時間がかかるから、ポンプダウン運転を行
わないで冷媒を回収することによって、冷媒回収効率を
向上させている。When the temperature of the discharge pipe of the compressor is equal to or higher than a predetermined temperature and the temperature of the outside air is equal to or higher than a set temperature, the refrigerant in the outdoor heat exchanger has a high pressure in the gas phase, and the refrigerant is supplied to the refrigerating machine oil. Dissolve in phase. Therefore, in this case, since it takes time to extract the gas phase refrigerant from the refrigerating machine oil instead of performing the pump-down operation, the refrigerant recovery efficiency is improved by collecting the refrigerant without performing the pump-down operation. I have.
【０００６】一方、外気温度が設定温度未満であるとき
には、冷凍機油への冷媒の溶け込みが少ないから、ポン
プダウン運転を行って室外熱交換器に冷媒を溜め込んで
から、冷媒を回収することによって、冷媒回収効率を向
上させている。[0006] On the other hand, when the outside air temperature is lower than the set temperature, the refrigerant is less dissolved into the refrigerating machine oil. Improved refrigerant recovery efficiency.
【０００７】また、請求項２の発明の冷媒回収方法は、
冷媒回収対象の圧縮機の吐出管温度が所定温度未満、か
つ、外気温度が設定温度以上であるときに、上記圧縮機
の暖気運転を行い、かつ、上記冷媒回収対象のポンプダ
ウン運転を行なわないで、上記冷媒回収対象から冷媒を
回収し、上記圧縮機の吐出管温度が上記所定温度未満、
かつ、外気温度が設定温度未満であるときに、上記圧縮
機の暖気運転を行い、かつ、上記冷媒回収対象のポンプ
ダウン運転をしてから、上記冷媒回収対象から冷媒を回
収することを特徴としている。[0007] The method for recovering refrigerant according to the second aspect of the present invention is characterized in that:
When the discharge pipe temperature of the compressor from which the refrigerant is to be recovered is lower than the predetermined temperature and the outside air temperature is equal to or higher than the set temperature, the compressor performs the warm-up operation, and does not perform the pump-down operation of the refrigerant to be recovered. In, the refrigerant is recovered from the refrigerant recovery target, the discharge pipe temperature of the compressor is less than the predetermined temperature,
And, when the outside air temperature is lower than the set temperature, performing the warm-up operation of the compressor, and, after performing the pump-down operation of the refrigerant recovery target, collecting the refrigerant from the refrigerant recovery target, I have.
【０００８】この請求項２の発明では、圧縮機の吐出管
温度が所定温度未満であるときに、圧縮機の暖気運転を
行って、冷凍機油の中に溶け込んでいる冷媒を引き出し
て、冷媒を回収するから、冷媒回収効率を向上できる。
なお、外気温度が設定温度以上であるときには、冷凍機
油への冷媒溶け込みを避けるために、ポンプダウン運転
を行なわず、外気温度が設定温度未満であるときには、
ポンプダウン運転を行って、冷媒回収効率の向上を図る
点は、請求項１の発明と同様である。According to the second aspect of the present invention, when the discharge pipe temperature of the compressor is lower than a predetermined temperature, the compressor is warmed up to draw out the refrigerant dissolved in the refrigerating machine oil. Thus, the refrigerant is recovered, so that the refrigerant recovery efficiency can be improved.
In addition, when the outside air temperature is equal to or higher than the set temperature, the pump-down operation is not performed to avoid the refrigerant from melting into the refrigerating machine oil, and when the outside air temperature is lower than the set temperature,
Similar to the first aspect of the present invention, the pump-down operation is performed to improve the refrigerant recovery efficiency.
【０００９】また、請求項３の発明の冷媒回収方法は、
冷媒回収対象の圧縮機の吐出管温度が所定温度以上、か
つ、外気温度が所定温度以上であるときに、上記冷媒回
収対象のポンプダウン運転をしないで、上記冷媒回収対
象から冷媒を回収し、上記圧縮機の吐出管温度が上記所
定温度以上、かつ、外気温度が設定温度未満であるとき
に、上記冷媒回収対象のポンプダウン運転をしてから、
上記冷媒回収対象から冷媒を回収し、上記圧縮機の吐出
管温度が上記所定温度未満であるときに、上記冷媒回収
対象のポンプダウン運転をしてから、上記冷媒回収対象
から冷媒を回収することを特徴としている。Further, the method for recovering refrigerant according to the third aspect of the present invention,
When the discharge pipe temperature of the refrigerant to be recovered is equal to or higher than a predetermined temperature, and the outside air temperature is equal to or higher than the predetermined temperature, the refrigerant is not recovered from the refrigerant recovery target, and the refrigerant is recovered from the refrigerant recovery target. When the discharge pipe temperature of the compressor is equal to or higher than the predetermined temperature, and the outside air temperature is lower than the set temperature, after performing the pump-down operation of the refrigerant recovery target,
Recovers the refrigerant from the refrigerant recovery target and discharges the compressor
When the pipe temperature is lower than the predetermined temperature, a pump-down operation of the refrigerant recovery target is performed, and then the refrigerant is recovered from the refrigerant recovery target.
【００１０】この請求項３の発明では、圧縮機の吐出管
温度が所定温度以上である場合に、外気温度が高けれ
ば、ポンプダウン運転せず、外気温度が低ければ、ポン
プダウン運転してから、冷媒を回収することで、冷媒回
収効率の向上を図る点は請求項１の発明と同様である。
これに加え、請求項３の発明では、圧縮機の吐出管の温
度が所定温度未満であるときには、外気温度の高低にか
かわらず、冷凍機油へのガス冷媒の溶け込みが起こらな
いから、ポンプダウン運転してから、冷媒を回収する。
これにより、冷媒を効率よく回収できる。According to the third aspect of the present invention, when the discharge pipe temperature of the compressor is equal to or higher than the predetermined temperature, the pump-down operation is not performed if the outside air temperature is high, and the pump-down operation is performed if the outside air temperature is low. The point that the refrigerant recovery efficiency is improved by recovering the refrigerant after the operation is the same as the first aspect of the present invention.
In addition, in the invention of claim 3, when the temperature of the discharge pipe of the compressor is lower than the predetermined temperature, the gas refrigerant does not dissolve into the refrigerating machine oil regardless of the level of the outside air temperature. Then, after the pump-down operation, the refrigerant is recovered.
Thereby, the refrigerant can be efficiently collected.
【００１１】また、請求項４の発明の冷媒回収装置は、
冷媒回収対象の圧縮機の吐出管温度が所定温度以上であ
るか否かを判断する圧縮機温度判断手段と、外気温度が
設定温度以上であるか否かを判断する外気温度判断手段
と、上記圧縮機温度判断手段が、上記圧縮機の吐出管温
度が上記所定温度以上であると判断し、かつ、上記外気
温度判断手段が、上記外気温度が上記設定温度以上であ
ると判断したときに、上記冷媒回収対象をポンプダウン
運転をしないで、冷媒回収を行うように制御する第１回
収制御手段と、上記圧縮機温度判断手段が、上記圧縮機
の吐出管温度が上記所定温度以上であると判断し、か
つ、上記外気温度判断手段が、上記外気温度が上記設定
温度未満であると判断したときに、上記冷媒回収対象を
ポンプダウン運転をしてから、冷媒回収を行うように制
御する第２回収制御手段とを備えたことを特徴としてい
る。[0011] The refrigerant recovery apparatus of the invention according to claim 4 is characterized in that:
Compressor temperature determining means for determining whether or not the discharge pipe temperature of the compressor from which the refrigerant is to be recovered is equal to or higher than a predetermined temperature; outside air temperature determining means for determining whether or not the outside air temperature is equal to or higher than a set temperature; The compressor temperature judging means calculates the discharge pipe temperature of the compressor.
When the temperature is determined to be equal to or higher than the predetermined temperature, and the outside air temperature determining means determines that the outdoor temperature is equal to or higher than the set temperature, the refrigerant recovery target is not pumped down, and the refrigerant is not cooled. A first recovery control means for performing recovery and the compressor temperature determining means comprising:
When the discharge pipe temperature is determined to be equal to or higher than the predetermined temperature, and the outside air temperature determining means determines that the outside air temperature is lower than the set temperature, the refrigerant recovery target is pumped down. And a second recovery control means for controlling the recovery of the refrigerant.
【００１２】この請求項４の発明の冷媒回収装置は、圧
縮機温度判断手段で圧縮機の吐出管温度が所定温度以上
であると判断され、外気温度判断手段で外気温度が設定
温度以上であると判断されたときに、冷媒回収対象をポ
ンプダウン運転をしないで、冷媒回収を行うように、第
１回収制御手段によって制御される。これにより、請求
項１の発明と同様、冷凍機油にガス冷媒を溶解させるこ
となく、冷媒を回収して、冷媒回収効率を向上させるこ
とができる。In the refrigerant recovery apparatus according to the present invention, the compressor temperature judging means judges that the discharge pipe temperature of the compressor is equal to or higher than the predetermined temperature, and the outside air temperature judging means judges that the outside air temperature is equal to or higher than the set temperature. When it is determined that the refrigerant recovery target is not pumped down, the first recovery control unit controls the refrigerant recovery. Thus, similar to the first aspect of the invention, the refrigerant can be recovered without dissolving the gas refrigerant in the refrigerating machine oil, and the refrigerant recovery efficiency can be improved.
【００１３】一方、圧縮機の吐出管の温度が所定温度以
上であると判断され、かつ、外気温度が設定温度未満で
あると判断されたときには、冷凍機油にガス冷媒が溶け
込み難い。したがって、第２回収制御手段は、ポンプダ
ウン運転をして室外熱交換器に冷媒を溜め込んでから、
冷媒を効率良く回収するように制御している。On the other hand, when it is determined that the temperature of the discharge pipe of the compressor is equal to or higher than the predetermined temperature and that the outside air temperature is lower than the set temperature, it is difficult for the gas refrigerant to dissolve into the refrigerating machine oil. Therefore, the second recovery control means performs the pump-down operation to store the refrigerant in the outdoor heat exchanger,
Control is performed to efficiently collect the refrigerant.
【００１４】また、請求項５の発明の冷媒回収装置は、
冷媒回収対象の圧縮機の吐出管温度が所定温度以上であ
るか否かを判断する圧縮機温度判断手段と、外気温度が
設定温度以上であるか否かを判断する外気温度判断手段
と、上記圧縮機を暖気運転する圧縮機加熱手段と、上記
圧縮機温度判断手段が、上記圧縮機の吐出管温度が上記
所定温度未満であると判断し、かつ、上記外気温度判断
手段が、上記外気温度が上記設定温度以上であると判断
したときに、上記圧縮機加熱手段で圧縮機の暖気運転を
行い、かつ、上記冷媒回収対象のポンプダウン運転を行
わずに、冷媒回収を行うように制御する第１回収制御手
段と、上記圧縮機温度判断手段が、上記圧縮機の吐出管
温度が上記所定温度未満であると判断し、かつ、上記外
気温度判断手段が、上記外気温度が上記設定温度未満で
あると判断したときに、上記圧縮機加熱手段で圧縮機の
暖気運転を行い、かつ、上記冷媒回収対象のポンプダウ
ン運転を行なってから、冷媒回収を行うように制御する
第２回収制御手段とを備えたことを特徴としている。Further, the refrigerant recovery apparatus of the invention according to claim 5 is characterized in that:
Compressor temperature determining means for determining whether or not the discharge pipe temperature of the compressor from which the refrigerant is to be recovered is equal to or higher than a predetermined temperature; outside air temperature determining means for determining whether or not the outside air temperature is equal to or higher than a set temperature; The compressor heating means for warming up the compressor and the compressor temperature determining means determine that the discharge pipe temperature of the compressor is lower than the predetermined temperature, and the outside air temperature determining means determines the outside air temperature. When it is determined that the temperature is equal to or higher than the set temperature, the compressor heating unit performs a warm-up operation of the compressor, and performs control such that the refrigerant recovery is performed without performing the pump-down operation of the refrigerant recovery target. The first recovery control means and the compressor temperature judging means comprise a discharge pipe of the compressor.
When the temperature is determined to be less than the predetermined temperature, and the outside air temperature determining means determines that the outside air temperature is less than the set temperature, the compressor heating means performs a warm-up operation of the compressor. And a second recovery control means for controlling the recovery of the refrigerant after performing the pump-down operation of the refrigerant recovery target.
【００１５】この請求項５の発明では、圧縮機温度判断
手段で圧縮機の吐出管温度が所定温度未満であると判断
されたときに、第１,第２回収制御手段が、圧縮機加熱
手段を制御して圧縮機の暖気運転を行わせる。これによ
り、冷凍機油の中に溶け込んでいる冷媒を引き出して、
効率良く冷媒回収できる。なお、外気温度が設定温度以
上であるときには、第１回収制御手段は、冷凍機油への
冷媒溶け込みを避けるため、回収前のポンプダウン運転
を行わず、外気温度が設定温度未満であるときには、第
２回収制御手段は、ポンプダウン運転を行って、冷媒回
収効率の向上を図る点は、請求項４の発明と同様であ
る。According to the fifth aspect of the present invention, when the compressor temperature judging means judges that the discharge pipe temperature of the compressor is lower than the predetermined temperature, the first and second recovery control means operate the compressor heating means. Is controlled to perform the warm-up operation of the compressor. As a result, the refrigerant dissolved in the refrigerating machine oil is drawn out,
Refrigerant can be collected efficiently. When the outside air temperature is equal to or higher than the set temperature, the first recovery control unit does not perform the pump-down operation before the collection to avoid the refrigerant from being mixed into the refrigerating machine oil, and when the outside air temperature is lower than the set temperature, (2) The point that the recovery control means performs the pump-down operation to improve the refrigerant recovery efficiency is the same as the invention of claim 4.
【００１６】また、請求項６の発明の冷媒回収装置は、
冷媒回収対象の圧縮機の吐出管温度が所定温度以上であ
るか否かを判断する圧縮機温度判断手段と、外気温度が
設定温度以上であるか否かを判断する外気温度判断手段
と、上記圧縮機温度判断手段が、上記圧縮機の吐出管温
度が上記所定温度以上であると判断し、かつ、上記外気
温度判断手段が、上記外気温度が上記設定温度以上であ
ると判断したときに、上記冷媒回収対象のポンプダウン
運転を行わずに、冷媒回収を行うように制御する第１回
収制御手段と、上記圧縮機温度判断手段が、上記圧縮機
の吐出管温度が上記所定温度以上であると判断し、か
つ、上記外気温度判断手段が、上記外気温度が上記設定
温度未満であると判断したときに、上記冷媒回収対象の
ポンプダウン運転を行なってから、冷媒回収を行うよう
に制御する第２回収制御手段と、上記圧縮機温度判断手
段が、上記圧縮機の吐出管温度が上記所定温度以下であ
ると判断したときに、上記冷媒回収対象のポンプダウン
運転を行ってから、冷媒回収を行うように制御する第３
回収制御手段を備えたことを特徴としている。Further, the refrigerant recovery apparatus of the invention according to claim 6 is
Compressor temperature determining means for determining whether or not the discharge pipe temperature of the compressor from which the refrigerant is to be recovered is equal to or higher than a predetermined temperature; outside air temperature determining means for determining whether or not the outside air temperature is equal to or higher than a set temperature; The compressor temperature judging means calculates the discharge pipe temperature of the compressor.
When the temperature is determined to be equal to or higher than the predetermined temperature, and the outside air temperature determining means determines that the outdoor temperature is equal to or higher than the set temperature, without performing the pump-down operation of the refrigerant recovery target, A first recovery control means for controlling the recovery of the refrigerant; and the compressor temperature determining means,
When the discharge pipe temperature is determined to be equal to or higher than the predetermined temperature, and when the outside air temperature determining means determines that the outside air temperature is lower than the set temperature, the pump recovery operation of the refrigerant recovery target is performed. Then, when the second recovery control means for controlling the refrigerant recovery and the compressor temperature determining means determine that the discharge pipe temperature of the compressor is equal to or lower than the predetermined temperature, the refrigerant recovery target Control to perform refrigerant recovery after performing pump-down operation of No. 3
It is characterized by having a collection control means.
【００１７】この請求項６の発明では、圧縮機温度判断
手段が判断した圧縮機の吐出管の温度が所定温度以上で
ある場合に、外気温度判断手段が判断した外気温度が高
ければ、第１回収制御手段は、ポンプダウン運転せずに
冷媒を回収するように制御する。一方、外気温度が低け
れば、第２回収制御手段は、ポンプダウン運転してか
ら、冷媒を回収することで、冷媒回収効率の向上を図る
点は請求項４の発明と同様である。これに加え、この請
求項６の発明では、圧縮機の吐出管の温度が所定温度未
満であると圧縮機温度判断手段が判断したときには、外
気温度の高低にかかわらず、冷凍機油へのガス冷媒の溶
け込みが起こらないから、第３回収制御手段は、ポンプ
ダウン運転してから冷媒を回収する。これにより、冷媒
を効率よく回収できる。According to the present invention, when the temperature of the discharge pipe of the compressor determined by the compressor temperature determining means is equal to or higher than a predetermined temperature, if the outside air temperature determined by the outdoor temperature determining means is high, the first The recovery control means controls to recover the refrigerant without performing the pump-down operation. On the other hand, if the outside air temperature is low, the second recovery control means improves the refrigerant recovery efficiency by recovering the refrigerant after performing the pump-down operation as in the invention of claim 4. In addition, according to the invention of claim 6, when the compressor temperature determining means determines that the temperature of the discharge pipe of the compressor is lower than the predetermined temperature, the gas refrigerant to the refrigerating machine oil regardless of the level of the outside air temperature. Does not occur, the third recovery control means recovers the refrigerant after performing the pump-down operation. Thereby, the refrigerant can be efficiently collected.
【００１８】[0018]
【発明の実施の形態】以下、この発明を図示の実施の形
態により詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
【００１９】図１に、この発明の冷媒回収装置の実施形
態を示す。この冷媒回収装置１は、吸入側２Ａが熱交換
器３を経由して回収ポート５に接続された圧縮機２と、
この圧縮機２の吐出側２Ｂに接続された閉鎖弁６を備え
ている。この閉鎖弁６は、上記熱交換器３を経由して、
排出ポート７に接続されている。排出ポート７は、回収
冷媒タンク(図示せず)に接続される。FIG. 1 shows an embodiment of a refrigerant recovery apparatus according to the present invention. The refrigerant recovery device 1 includes a compressor 2 having a suction side 2A connected to a recovery port 5 via a heat exchanger 3;
The compressor 2 has a closing valve 6 connected to the discharge side 2B. This closing valve 6 is connected via the heat exchanger 3 to
It is connected to the discharge port 7. The discharge port 7 is connected to a recovered refrigerant tank (not shown).
【００２０】また、この冷媒回収装置１は、回収制御部
８を有している。この回収制御部８は、冷媒回収対象で
ある冷凍機１００の圧縮機１０１の吐出管温度を検出す
る第１温度センサ１０と、外気温度を検出する第２温度
センサ１１に接続されている。そして、この回収制御部
８は、上記吐出管温度と外気温度とに基づいて、圧縮機
２による冷媒回収の前に、冷凍機１００のポンプダウン
運転を行うか否か、室外機ファン１０２を運転するか否
か、圧縮機１０１の暖気運転を行うか否かを判断する。Further, the refrigerant recovery device 1 has a recovery control section 8. The recovery control unit 8 is connected to a first temperature sensor 10 for detecting a discharge pipe temperature of the compressor 101 of the refrigerator 100 as a refrigerant recovery target, and a second temperature sensor 11 for detecting an outside air temperature. Then, based on the discharge pipe temperature and the outside air temperature, the recovery control unit 8 operates the outdoor unit fan 102 to determine whether to perform the pump-down operation of the refrigerator 100 before the refrigerant recovery by the compressor 2. It is determined whether or not to perform the warm-up operation of the compressor 101.
【００２１】この冷媒回収装置１で、冷凍機１００の冷
媒を回収するには、まず、回収ポート５を、圧縮機１０
１と室外熱交換器１０６との間の冷媒配管１１０に設け
た接続ポート１１１に連結する。そして、この冷媒回収
装置１の回収制御部８は、図２に示すフローチャートに
したがって、この冷媒回収装置１の冷媒回収前準備動作
を制御する。In order to recover the refrigerant of the refrigerator 100 in the refrigerant recovery apparatus 1, first, the recovery port 5 is connected to the compressor 10
It is connected to a connection port 111 provided in a refrigerant pipe 110 between the first heat exchanger 1 and the outdoor heat exchanger 106. Then, the recovery control unit 8 of the refrigerant recovery device 1 controls a pre-recovery-recovery operation of the refrigerant recovery device 1 according to the flowchart shown in FIG.
【００２２】まず、ステップＳ１では、回収制御部８
は、第１温度センサ１０からの温度信号を受けて、圧縮
機１０１の吐出管温度が所定温度(約２０℃乃至３０℃)
以上であるか否かを判断し、吐出管温度が所定温度以上
であると判断すれば,ステップＳ２に進み、第２温度セ
ンサ１１からの温度信号によって、外気温度が１５℃以
上であるか否かを判断する。一方、ステップＳ１で、上
記圧縮機１０１の吐出管温度が所定温度未満であると判
断すれば、ステップＳ６に進んで、圧縮機１０１を高周
波で運転し、暖気運転を始める。次に、ステップＳ７に
進んで、吐出管温度が４０℃乃至５０℃になったか否か
を判断し、吐出管温度が４０℃乃至５０℃になったと判
断すれば、ステップＳ２に進み、吐出管温度が４０℃乃
至５０℃になっていないと判断すれば、ステップＳ６に
戻る。First, in step S1, the collection control unit 8
Receives the temperature signal from the first temperature sensor 10 and sets the discharge pipe temperature of the compressor 101 to a predetermined temperature (about 20 ° C. to 30 ° C.)
It is determined whether or not the temperature is equal to or higher than the above. If it is determined that the discharge pipe temperature is equal to or higher than the predetermined temperature, the process proceeds to step S2. Judge. On the other hand, if it is determined in step S1 that the discharge pipe temperature of the compressor 101 is lower than the predetermined temperature, the process proceeds to step S6, in which the compressor 101 is operated at a high frequency to start a warm-up operation. Next, proceeding to step S7, it is determined whether or not the discharge pipe temperature has reached 40 ° C. to 50 ° C. If it is determined that the discharge pipe temperature has reached 40 ° C. to 50 ° C., the procedure proceeds to step S2, where the discharge pipe If it is determined that the temperature has not reached 40 ° C. to 50 ° C., the process returns to step S6.
【００２３】次に、ステップＳ２で、室外温度が１５℃
以上であると判断すれば、ステップＳ８に進み、冷媒回
収を開始してよいことを表す表示を行う。このとき、同
時に、閉鎖弁６を開き、回収用圧縮機２を運転して、冷
凍機１００から冷媒を回収してもよい。圧縮機２によっ
て、回収ポート５から吸い込まれた冷媒は、熱交換器３
で凝縮されてから、排出ポート７に接続された回収タン
ク(図示せず)に貯留される。Next, in step S2, the outdoor temperature is set to 15 ° C.
If it is determined that the above is the case, the process proceeds to step S8, and a display indicating that refrigerant collection may be started is performed. At this time, the refrigerant may be recovered from the refrigerator 100 by simultaneously opening the closing valve 6 and operating the recovery compressor 2. The refrigerant sucked from the recovery port 5 by the compressor 2 is supplied to the heat exchanger 3
And is stored in a recovery tank (not shown) connected to the discharge port 7.
【００２４】一方、ステップＳ２で、室外温度が１５℃
未満であると判断すれば、ステップＳ３に進み、回収制
御部８は、膨張弁１０３を閉じ、圧縮機１０１を運転し
て、室外熱交換器１０６に冷媒を溜め込む(ポンプダウ
ン運転)。次に、ステップＳ４に進み、室外機ファン１
０２を運転してから、ステップＳ５に進んで、冷媒回収
を開始してよいことを表す表示を行う。このとき、同時
に、閉鎖弁６を開き、回収用圧縮機２を運転して、冷凍
機１００から冷媒を回収してもよい。On the other hand, in step S2, the outdoor temperature is set to 15 ° C.
If it is determined that the temperature is less than the predetermined value, the process proceeds to step S3, where the recovery control unit 8 closes the expansion valve 103, operates the compressor 101, and stores the refrigerant in the outdoor heat exchanger 106 (pump-down operation). Next, proceeding to step S4, the outdoor unit fan 1
After driving 02, the process proceeds to step S5 to display a message indicating that the refrigerant collection may be started. At this time, the refrigerant may be recovered from the refrigerator 100 by simultaneously opening the closing valve 6 and operating the recovery compressor 2.
【００２５】この実施形態では、上記ステップＳ３で、
ポンプダウン運転を行うことによって、室外熱交換器１
０６に冷媒を溜め込むから、冷媒配管１１０から冷媒を
効率良く回収できる。In this embodiment, in step S3,
By performing the pump-down operation, the outdoor heat exchanger 1
Since the refrigerant is stored in the refrigerant pipe 06, the refrigerant can be efficiently recovered from the refrigerant pipe 110.
【００２６】また、上記ステップＳ４で、室外機ファン
１０２を運転することによって、冷媒回収の後半におい
て、室外熱交換器１０６内の熱交換管内壁面に付着して
いる残存液冷媒を蒸発させることができ、回収効率を向
上できる。In step S4, by operating the outdoor unit fan 102, the remaining liquid refrigerant adhering to the inner wall surface of the heat exchange pipe in the outdoor heat exchanger 106 can be evaporated in the latter half of the refrigerant recovery. And the collection efficiency can be improved.
【００２７】なお、ステップＳ２において、室外温度が
１５℃以上である場合には、ポンプダウン運転を行う
と、冷凍機油にガス冷媒が溶解し、ガス相の冷媒を引き
出すのに時間がかかる。したがって、ステップＳ８に示
すように、ポンプダウン運転を行わないで、冷媒回収を
行って、冷媒回収効率を向上させている。また、ステッ
プＳ２において、室外温度が１５℃以上である場合に
は、室外機ファン１０２を回すと冷凍機油への冷媒の溶
け込みを促進させてしまう。したがって、ステップＳ８
に示すように、室外機ファン１０２を回さないで、冷媒
回収を行って、冷媒回収効率を向上させている。In step S2, when the outdoor temperature is 15 ° C. or more, when the pump-down operation is performed, the gas refrigerant dissolves in the refrigerating machine oil, and it takes time to extract the gas-phase refrigerant. Therefore, as shown in step S8, the refrigerant recovery is performed without performing the pump-down operation, thereby improving the refrigerant recovery efficiency. Also, in step S2, when the outdoor temperature is 15 ° C. or higher, turning the outdoor unit fan 102 promotes the dissolution of the refrigerant into the refrigerating machine oil. Therefore, step S8
As shown in (2), the refrigerant recovery is performed without rotating the outdoor unit fan 102, thereby improving the refrigerant recovery efficiency.
【００２８】尚、上記実施形態では、図２のステップＳ
１,Ｓ６,Ｓ７に示すように、圧縮機１０１の吐出管温度
が所定温度(約２０〜３０℃)未満のときに、圧縮機１０
１を暖気運転したが、暖気運転を行わない場合には、図
２に一点鎖線で示すように、ステップＳ６,Ｓ７を削除
し、ステップＳ１から直接ステップＳ３に進むようにし
てもよい。暖気運転を行わない場合には、圧縮機１０１
が冷えているので、冷凍機油にガス冷媒が溶け込む心配
がないから、室外温度に関係無く、ポンプダウン運転を
行うことで、冷媒回収効率を向上させることができる。In the above embodiment, step S in FIG.
As shown in 1, S6 and S7, when the discharge pipe temperature of the compressor 101 is lower than a predetermined temperature (about 20 to 30 ° C.), the compressor 10
In the case where the warm-up operation is performed but the warm-up operation is not performed, steps S6 and S7 may be deleted as shown by a dashed line in FIG. When the warm-up operation is not performed, the compressor 101
Since the gas is cooled, there is no concern that the gas refrigerant dissolves in the refrigerating machine oil. Therefore, the pump recovery operation can be performed irrespective of the outdoor temperature to improve the refrigerant recovery efficiency.
【００２９】[0029]
【発明の効果】以上より明らかなように、請求項１の発
明の冷媒回収方法は、冷媒回収対象の圧縮機の吐出管温
度が所定温度以上、かつ、外気温度が設定温度以上であ
るときに、冷媒回収対象のポンプダウン運転をしないか
ら、室外熱交換器内で冷媒を冷凍機油に溶解させずに、
効率良く冷媒を回収できる。また、圧縮機の吐出管温度
が所定温度以上、かつ、外気温度が設定温度未満である
ときには、室外熱交換器内で冷媒がガス相で冷凍機油に
溶解する心配がないから、冷媒回収対象のポンプダウン
運転をして、室外熱交換器に冷媒を溜め込むことで、冷
媒回収効率を向上できる。As is apparent from the above description, in the refrigerant recovery method according to the first aspect of the present invention, the temperature of the discharge pipe of the compressor from which the refrigerant is to be recovered is equal to or higher than the predetermined temperature, and the temperature of the outside air is equal to the set temperature. When it is above, since the pump down operation of the refrigerant recovery target is not performed, the refrigerant is not dissolved in the refrigerating machine oil in the outdoor heat exchanger,
The refrigerant can be efficiently collected. Further, when the discharge pipe temperature of the compressor is equal to or higher than the predetermined temperature and the outside air temperature is lower than the set temperature, there is no fear that the refrigerant dissolves in the refrigerating machine oil in the gas phase in the outdoor heat exchanger. By performing the pump-down operation and storing the refrigerant in the outdoor heat exchanger, the refrigerant recovery efficiency can be improved.
【００３０】また、請求項２の発明の冷媒回収方法は、
圧縮機の吐出管温度が所定温度未満であるときに、圧縮
機の暖気運転を行って、冷凍機油の中に溶け込んでいる
冷媒を引き出して、冷媒を回収するから、冷媒回収効率
を向上できる。なお、外気温度が設定温度以上であると
きには、冷凍機油への冷媒溶け込みを避けるために、ポ
ンプダウン運転を行なわず、外気温度が設定温度未満で
あるときには、ポンプダウン運転を行って、冷媒回収効
率の向上を図る点は、請求項１の発明と同様である。Further, the refrigerant recovery method according to the second aspect of the present invention,
When the temperature of the discharge pipe of the compressor is lower than the predetermined temperature, the compressor is warmed up, the refrigerant dissolved in the refrigerating machine oil is drawn out, and the refrigerant is recovered, so that the refrigerant recovery efficiency can be improved. When the outside air temperature is equal to or higher than the set temperature, the pump-down operation is not performed to avoid the refrigerant from being mixed into the refrigerating machine oil. When the outside air temperature is lower than the set temperature, the pump-down operation is performed and the refrigerant recovery efficiency is reduced. This is the same as the first aspect of the present invention.
【００３１】また、請求項３の発明の冷媒回収方法は、
圧縮機の吐出管温度が所定温度以上である場合に、外気
温度が高ければ、ポンプダウン運転せず、外気温度が低
ければ、ポンプダウン運転してから、冷媒を回収するこ
とで、冷媒回収効率の向上を図る点は請求項１の発明と
同様である。これに加え、請求項３の発明では、圧縮機
の吐出管温度が所定温度未満であるときには、外気温度
の高低にかかわらず、冷凍機油へのガス冷媒の溶け込み
が起こらないから、ポンプダウン運転してから、冷媒を
回収する。これにより、冷媒を効率よく回収できる。Further, according to the third aspect of the present invention, there is provided a method for recovering refrigerant.
When the temperature of the discharge pipe of the compressor is equal to or higher than a predetermined temperature, the pump-down operation is not performed if the outside air temperature is high, and the pump-down operation is performed if the outside air temperature is low, and the refrigerant is recovered. This is the same as the first aspect of the present invention. In addition, in the invention of claim 3, when the discharge pipe temperature of the compressor is lower than the predetermined temperature, the gas refrigerant does not dissolve into the refrigerating machine oil regardless of the level of the outside air temperature. And then recover the refrigerant. Thereby, the refrigerant can be efficiently collected.
【００３２】また、請求項４の発明の冷媒回収装置は、
圧縮機温度判断手段で圧縮機の吐出管温度が所定温度以
上であると判断され、外気温度判断手段で外気温度が設
定温度以上であると判断されたときに、冷媒回収対象を
ポンプダウン運転をしないで、冷媒回収を行うように、
第１回収制御手段によって制御される。これにより、請
求項１の発明と同様、冷凍機油にガス冷媒を溶解させる
ことなく、冷媒を回収して、冷媒回収効率を向上させる
ことができる。Further, the refrigerant recovery apparatus of the invention according to claim 4 is
When the discharge pipe temperature of the compressor is determined to be equal to or higher than the predetermined temperature by the compressor temperature determining means and the outdoor temperature is determined to be equal to or higher than the set temperature by the outdoor air temperature determining means, the refrigerant recovery target is pumped down. Do not do the refrigerant recovery,
It is controlled by the first collection control means. Thus, similar to the first aspect of the invention, the refrigerant can be recovered without dissolving the gas refrigerant in the refrigerating machine oil, and the refrigerant recovery efficiency can be improved.
【００３３】一方、圧縮機の吐出管温度が所定温度以上
であると判断され、かつ、外気温度が設定温度未満であ
ると判断されたときには、冷凍機油にガス冷媒が溶け込
み難い。したがって、第２回収制御手段は、ポンプダウ
ン運転をして室外熱交換器に冷媒を溜め込んでから、冷
媒を効率良く回収するように制御している。On the other hand, when it is determined that the discharge pipe temperature of the compressor is equal to or higher than the predetermined temperature and that the outside air temperature is lower than the set temperature, the gas refrigerant hardly dissolves in the refrigerating machine oil. Therefore, the second recovery control means performs a pump-down operation to store the refrigerant in the outdoor heat exchanger, and then controls to efficiently recover the refrigerant.
【００３４】また、請求項５の発明の冷媒回収装置は、
圧縮機温度判断手段で圧縮機の吐出管温度が所定温度未
満であると判断されたときに、第１,第２回収制御手段
が、圧縮機加熱手段を制御して圧縮機の暖気運転を行わ
せる。これにより、冷凍機油の中に溶け込んでいる冷媒
を引き出して、効率良く冷媒回収できる。なお、外気温
度が設定温度以上であるときには、第１回収制御手段
は、冷凍機油への冷媒溶け込みを避けるため、回収前の
ポンプダウン運転を行わず、外気温度が設定温度未満で
あるときには、第２回収制御手段は、ポンプダウン運転
を行って、冷媒回収効率の向上を図る点は、請求項４の
発明と同様である。[0034] Further, the refrigerant recovery apparatus of the invention according to claim 5 includes:
When the compressor temperature determining means determines that the discharge pipe temperature of the compressor is lower than the predetermined temperature, the first and second recovery control means control the compressor heating means to perform a warm-up operation of the compressor. Let Thereby, the refrigerant dissolved in the refrigerating machine oil can be drawn out and the refrigerant can be efficiently recovered. When the outside air temperature is equal to or higher than the set temperature, the first recovery control unit does not perform the pump-down operation before the collection to avoid the refrigerant from being mixed into the refrigerating machine oil, and when the outside air temperature is lower than the set temperature, (2) The point that the recovery control means performs the pump-down operation to improve the refrigerant recovery efficiency is the same as the invention of claim 4.
【００３５】また、請求項６の発明の冷媒回収装置は、
圧縮機温度判断手段が判断した圧縮機の吐出管温度が所
定温度以上である場合に、外気温度判断手段が判断した
外気温度が高ければ、第１回収制御手段は、ポンプダウ
ン運転せずに冷媒を回収するように制御する。一方、外
気温度が低ければ、第２回収制御手段は、ポンプダウン
運転してから、冷媒を回収することで、冷媒回収効率の
向上を図る点は請求項４の発明と同様である。これに加
え、この請求項６の発明では、圧縮機の吐出管温度が所
定温度未満であると圧縮機温度判断手段が判断したとき
には、外気温度の高低にかかわらず、冷凍機油へのガス
冷媒の溶け込みが起こらないから、第３回収制御手段
は、ポンプダウン運転してから冷媒を回収する。これに
より、冷媒を効率よく回収できる。Further, the refrigerant recovery apparatus of the invention according to claim 6 is:
If the temperature of the discharge pipe of the compressor determined by the compressor temperature determination means is equal to or higher than the predetermined temperature, and if the outside air temperature determined by the outside air temperature determination means is high, the first recovery control means does not perform the pump-down operation, and Is controlled to be collected. On the other hand, if the outside air temperature is low, the second recovery control means improves the refrigerant recovery efficiency by recovering the refrigerant after performing the pump-down operation as in the invention of claim 4. In addition, according to the invention of claim 6, when the compressor temperature determining means determines that the discharge pipe temperature of the compressor is lower than the predetermined temperature, regardless of the level of the outside air temperature, the gas refrigerant to the refrigerating machine oil can be obtained. Since no melting occurs, the third recovery control means recovers the refrigerant after performing the pump-down operation. Thereby, the refrigerant can be efficiently collected.
【図１】 この発明の冷媒回収装置の実施形態を示す冷
媒回路図である。FIG. 1 is a refrigerant circuit diagram showing an embodiment of a refrigerant recovery device of the present invention.
【図２】 上記実施形態の動作を示すフローチャートで
ある。FIG. 2 is a flowchart showing an operation of the embodiment.
１…冷媒回収装置、２…圧縮機、２Ａ…吸入側、２Ｂ…
吐出側、３…熱交換器、５…回収ポート、６…閉鎖弁、
７…排出ポート、８…回収制御部、１０…第１温度セン
サ、１１…第２温度センサ、１００…冷凍機、１０１…
圧縮機、１０２…室外機ファン。DESCRIPTION OF SYMBOLS 1 ... Refrigerant recovery apparatus, 2 ... Compressor, 2A ... Suction side, 2B ...
Discharge side, 3 ... heat exchanger, 5 ... recovery port, 6 ... closing valve,
7 discharge port, 8 recovery controller, 10 first temperature sensor, 11 second temperature sensor, 100 refrigerator, 101
Compressor 102: Outdoor unit fan.
Claims (6)
の吐出管温度が所定温度以上、かつ、外気温度が設定温
度以上であるときに、上記冷媒回収対象(１００)のポン
プダウン運転をしないで、上記冷媒回収対象(１００)か
ら冷媒を回収し、 上記圧縮機(１０１)の吐出管温度が上記所定温度以上、
かつ、外気温度が設定温度未満であるときに、上記冷媒
回収対象(１００)のポンプダウン運転をしてから、上記
冷媒回収対象(１００)から冷媒を回収することを特徴と
する冷媒回収方法。1. A compressor (101) of a refrigerant recovery target (100).
When the discharge pipe temperature is equal to or higher than the predetermined temperature, and the outside air temperature is equal to or higher than the set temperature, the refrigerant is not recovered from the refrigerant recovery target (100), and the refrigerant is recovered from the refrigerant recovery target (100). The discharge pipe temperature of the compressor (101) is equal to or higher than the predetermined temperature,
In addition, when the outside air temperature is lower than a set temperature, the refrigerant recovery target (100) is pumped down, and then the refrigerant is recovered from the refrigerant recovery target (100).
の吐出管温度が所定温度未満、かつ、外気温度が設定温
度以上であるときに、上記圧縮機(１０１)の暖気運転を
行い、かつ、上記冷媒回収対象(１００)のポンプダウン
運転を行なわないで、上記冷媒回収対象(１００)から冷
媒を回収し、 上記圧縮機(１０１)の吐出管温度が上記所定温度未満、
かつ、外気温度が設定温度未満であるときに、上記圧縮
機(１０１)の暖気運転を行い、かつ、上記冷媒回収対象
(１００)のポンプダウン運転をしてから、上記冷媒回収
対象(１００)から冷媒を回収することを特徴とする冷媒
回収方法。2. A compressor (101) of a refrigerant recovery target (100).
When the discharge pipe temperature is lower than the predetermined temperature and the outside air temperature is equal to or higher than the set temperature, the compressor (101) performs the warm-up operation and does not perform the pump-down operation of the refrigerant recovery target (100). A refrigerant is recovered from the refrigerant recovery target (100), and a discharge pipe temperature of the compressor (101) is lower than the predetermined temperature,
And, when the outside air temperature is lower than the set temperature, the compressor (101) performs a warm-up operation, and
A refrigerant recovery method, wherein the refrigerant is recovered from the refrigerant recovery target (100) after performing the pump-down operation of (100).
の吐出管温度が所定温度以上、かつ、外気温度が所定温
度以上であるときに、上記冷媒回収対象(１００)のポン
プダウン運転をしないで、上記冷媒回収対象(１００)か
ら冷媒を回収し、 上記圧縮機(１０１)の吐出管温度が上記所定温度以上、
かつ、外気温度が設定温度未満であるときに、上記冷媒
回収対象(１００)のポンプダウン運転をしてから、上記
冷媒回収対象(１００)から冷媒を回収し、 上記圧縮機(１０１)の温度が上記所定温度未満であると
きに、上記冷媒回収対象(１００)のポンプダウン運転を
してから、上記冷媒回収対象(１００)から冷媒を回収す
ることを特徴とする冷媒回収方法。3. A compressor (101) of a refrigerant recovery target (100).
When the discharge pipe temperature is equal to or higher than a predetermined temperature, and the outside air temperature is equal to or higher than a predetermined temperature, the refrigerant is not collected from the refrigerant collection target (100) without performing the pump-down operation, and the refrigerant is collected from the refrigerant collection target (100). The discharge pipe temperature of the compressor (101) is equal to or higher than the predetermined temperature,
And, when the outside air temperature is lower than the set temperature, after performing the pump-down operation of the refrigerant recovery target (100), the refrigerant is recovered from the refrigerant recovery target (100), the temperature of the compressor (101) A method of performing a pump-down operation on the refrigerant recovery target (100) when the temperature is lower than the predetermined temperature, and then recovering the refrigerant from the refrigerant recovery target (100).
の吐出管温度が所定温度以上であるか否かを判断する圧
縮機温度判断手段(８,１０)と、 外気温度が設定温度以上であるか否かを判断する外気温
度判断手段(８,１１)と、 上記圧縮機温度判断手段(８,１０)が、上記圧縮機(１０
１)の吐出管温度が上記所定温度以上であると判断し、
かつ、上記外気温度判断手段(８,１１)が、上記外気温
度が上記設定温度以上であると判断したときに、上記冷
媒回収対象(１００)をポンプダウン運転しないで、冷媒
回収を行うように制御する第１回収制御手段(８,Ｓ１,
Ｓ２,Ｓ８)と、 上記圧縮機温度判断手段(８,１０)が、上記圧縮機(１０
１)の吐出管温度が上記所定温度以上であると判断し、
かつ、上記外気温度判断手段(８,１１)が、上記外気温
度が上記設定温度未満であると判断したときに、上記冷
媒回収対象(１００)をポンプダウン運転してから、冷媒
回収を行うように制御する第２回収制御手段(８,Ｓ１,
Ｓ２,Ｓ３,Ｓ５)とを備えたことを特徴とする冷媒回収
装置。4. A compressor (101) of a refrigerant recovery target (100).
Compressor temperature judging means (8, 10) for judging whether or not the discharge pipe temperature is higher than a predetermined temperature; and outside air temperature judging means (8, 11) for judging whether the outside air temperature is higher than a set temperature. ) And the compressor temperature determination means (8, 10)
It is determined that the discharge pipe temperature of 1) is equal to or higher than the predetermined temperature,
In addition, when the outside air temperature determining means (8, 11) determines that the outside air temperature is equal to or higher than the set temperature, the refrigerant recovery target (100) is not pumped down, and the refrigerant is recovered. The first recovery control means (8, S1,
S2, S8) and the compressor temperature determination means (8, 10)
It is determined that the discharge pipe temperature of 1) is equal to or higher than the predetermined temperature,
Further, when the outside air temperature determining means (8, 11) determines that the outside air temperature is lower than the set temperature, the refrigerant recovery target (100) is pumped down, and then the refrigerant recovery is performed. Recovery control means (8, S1,
S2, S3, S5).
の吐出管温度が所定温度以上であるか否かを判断する圧
縮機温度判断手段(８,１０)と、 外気温度が設定温度以上であるか否かを判断する外気温
度判断手段(８,１１)と、 上記圧縮機(１０１)を暖気運転する圧縮機加熱手段(８,
Ｓ６,Ｓ７)と、 上記圧縮機温度判断手段(８,１０)が、上記圧縮機(１０
１)の吐出管温度が上記所定温度未満であると判断し、
かつ、上記外気温度判断手段(８,１１)が、上記外気温
度が上記設定温度以上であると判断したときに、上記圧
縮機加熱手段(８,Ｓ６,Ｓ７)で圧縮機(１０１)の暖気運
転を行い、かつ、上記冷媒回収対象(１００)のポンプダ
ウン運転を行わずに、冷媒回収を行うように制御する第
１回収制御手段(８,Ｓ１,Ｓ２,Ｓ６,Ｓ７,Ｓ８)と、 上記圧縮機温度判断手段(８,１０)が、上記圧縮機(１０
１)の吐出管温度が上記所定温度未満であると判断し、
かつ、上記外気温度判断手段(８,１１)が、上記外気温
度が上記設定温度未満であると判断したときに、上記圧
縮機加熱手段(８,Ｓ６,Ｓ７)で圧縮機(１０１)の暖気運
転を行い、かつ、上記冷媒回収対象(１００)のポンプダ
ウン運転を行なってから、冷媒回収を行うように制御す
る第２回収制御手段(８,Ｓ１,Ｓ２,Ｓ６,Ｓ７,Ｓ８)と
を備えたことを特徴とする冷媒回収装置。5. A compressor (101) of a refrigerant recovery target (100).
Compressor temperature judging means (8, 10) for judging whether or not the discharge pipe temperature is higher than a predetermined temperature; and outside air temperature judging means (8, 11) for judging whether the outside air temperature is higher than a set temperature. ), And compressor heating means (8,
S6, S7) and the compressor temperature determining means (8, 10)
It is determined that the discharge pipe temperature of 1) is lower than the predetermined temperature,
When the outside air temperature determining means (8, 11) determines that the outside air temperature is equal to or higher than the set temperature, the compressor heating means (8, S6, S7) uses the warm air of the compressor (101). A first recovery control means (8, S1, S2, S6, S7, S8) for performing an operation, and performing a refrigerant recovery without performing a pump-down operation of the refrigerant recovery target (100); The compressor temperature judging means (8, 10) is provided with the compressor (10
It is determined that the discharge pipe temperature of 1) is lower than the predetermined temperature,
When the outside air temperature judging means (8, 11) judges that the outside air temperature is lower than the set temperature, the compressor heating means (8, S6, S7) warms up the compressor (101). The second recovery control means (8, S1, S2, S6, S7, S8) for performing the operation and performing the pump-down operation of the refrigerant recovery target (100) and then performing the refrigerant recovery. A refrigerant recovery device comprising:
の吐出管温度が所定温度以上であるか否かを判断する圧
縮機温度判断手段(８,１０)と、 外気温度が設定温度以上であるか否かを判断する外気温
度判断手段(８,１１)と、 上記圧縮機温度判断手段(８,１０)が、上記圧縮機(１０
１)の吐出管温度が上記所定温度以上であると判断し、
かつ、上記外気温度判断手段(８,１１)が、上記外気温
度が上記設定温度以上であると判断したときに、上記冷
媒回収対象(１００)のポンプダウン運転を行わずに、冷
媒回収を行うように制御する第１回収制御手段(８,Ｓ
１,Ｓ２,Ｓ８)と、 上記圧縮機温度判断手段(８,１０)が、上記圧縮機(１０
１)の吐出管温度が上記所定温度以上であると判断し、
かつ、上記外気温度判断手段(８,１１)が、上記外気温
度が上記設定温度未満であると判断したときに、上記冷
媒回収対象(１００)のポンプダウン運転を行なってか
ら、冷媒回収を行うように制御する第２回収制御手段
(８,Ｓ１,Ｓ２,Ｓ３,Ｓ５)と、 上記圧縮機温度判断手段(８,１０)が、上記圧縮機(１０
１)が上記所定温度以下であると判断したときに、上記
冷媒回収対象(１００)のポンプダウン運転を行ってか
ら、冷媒回収を行うように制御する第３回収制御手段
(８,Ｓ１,Ｓ３,Ｓ５)を備えたことを特徴とする冷媒回
収装置。6. A compressor (101) for a refrigerant recovery target (100).
Compressor temperature judging means (8, 10) for judging whether or not the discharge pipe temperature is higher than a predetermined temperature; and outside air temperature judging means (8, 11) for judging whether the outside air temperature is higher than a set temperature. ) And the compressor temperature determination means (8, 10)
It is determined that the discharge pipe temperature of 1) is equal to or higher than the predetermined temperature,
When the outside air temperature determining means (8, 11) determines that the outside air temperature is equal to or higher than the set temperature, the refrigerant recovery is performed without performing the pump-down operation of the refrigerant recovery target (100). Collection control means (8, S
1, S2, S8) and the compressor temperature determination means (8, 10)
It is determined that the discharge pipe temperature of 1) is equal to or higher than the predetermined temperature,
When the outside air temperature determination means (8, 11) determines that the outside air temperature is lower than the set temperature, the refrigerant recovery target (100) is pumped down, and then the refrigerant is recovered. Collection control means for controlling
(8, S1, S2, S3, S5) and the compressor temperature determination means (8, 10)
When it is determined that 1) is equal to or lower than the predetermined temperature, a third recovery control means for performing a pump-down operation of the refrigerant recovery target (100) and then performing a refrigerant recovery.
A refrigerant recovery device comprising (8, S1, S3, S5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10373502A JP3109502B2 (en) | 1998-12-28 | 1998-12-28 | Refrigerant recovery method and refrigerant recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10373502A JP3109502B2 (en) | 1998-12-28 | 1998-12-28 | Refrigerant recovery method and refrigerant recovery device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000199660A JP2000199660A (en) | 2000-07-18 |
| JP3109502B2 true JP3109502B2 (en) | 2000-11-20 |
Family
ID=18502272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10373502A Expired - Fee Related JP3109502B2 (en) | 1998-12-28 | 1998-12-28 | Refrigerant recovery method and refrigerant recovery device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3109502B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6440568B1 (en) | 1997-05-27 | 2002-08-27 | Nippon Arc Co., Ltd. | Plastic lenses and primer composition used for coating the same |
| US6680125B1 (en) | 1998-05-01 | 2004-01-20 | Hoya Corporation | Coating composition and method for preparing the same, and scuff-resistant plastic lense |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003028542A (en) | 2001-07-16 | 2003-01-29 | Daikin Ind Ltd | Refrigeration unit |
| CN112752937B (en) * | 2018-09-28 | 2022-09-02 | 大金工业株式会社 | Refrigerant charging method, heat source unit, and refrigerating cycle device |
| JP7151394B2 (en) * | 2018-11-08 | 2022-10-12 | 株式会社デンソー | refrigeration cycle equipment |
| JP7462186B2 (en) | 2020-05-29 | 2024-04-05 | パナソニックＩｐマネジメント株式会社 | Air Conditioning System |
-
1998
- 1998-12-28 JP JP10373502A patent/JP3109502B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6440568B1 (en) | 1997-05-27 | 2002-08-27 | Nippon Arc Co., Ltd. | Plastic lenses and primer composition used for coating the same |
| US6680125B1 (en) | 1998-05-01 | 2004-01-20 | Hoya Corporation | Coating composition and method for preparing the same, and scuff-resistant plastic lense |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000199660A (en) | 2000-07-18 |
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