JP2002250576A5 - - Google Patents
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- JP2002250576A5 JP2002250576A5 JP2001049646A JP2001049646A JP2002250576A5 JP 2002250576 A5 JP2002250576 A5 JP 2002250576A5 JP 2001049646 A JP2001049646 A JP 2001049646A JP 2001049646 A JP2001049646 A JP 2001049646A JP 2002250576 A5 JP2002250576 A5 JP 2002250576A5
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- oil
- refrigeration cycle
- cycle apparatus
- refrigerant
- recovery mechanism
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- 239000003921 oil Substances 0.000 description 108
- 238000005057 refrigeration Methods 0.000 description 68
- 239000003507 refrigerant Substances 0.000 description 52
- 238000011084 recovery Methods 0.000 description 51
- 239000010687 lubricating oil Substances 0.000 description 34
- 238000010521 absorption reaction Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- 238000011017 operating method Methods 0.000 description 6
- 230000002708 enhancing Effects 0.000 description 3
- 239000010696 ester oil Substances 0.000 description 3
- 239000002480 mineral oil Substances 0.000 description 3
- 235000010446 mineral oil Nutrition 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- OHMHBGPWCHTMQE-UHFFFAOYSA-N 2,2-Dichloro-1,1,1-trifluoroethane Chemical compound FC(F)(F)C(Cl)Cl OHMHBGPWCHTMQE-UHFFFAOYSA-N 0.000 description 2
- 210000001736 Capillaries Anatomy 0.000 description 2
- KYKAJFCTULSVSH-UHFFFAOYSA-N chloro(fluoro)methane Chemical group F[C]Cl KYKAJFCTULSVSH-UHFFFAOYSA-N 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Description
【特許請求の範囲】
【請求項１】
第一の冷媒と第一の潤滑油を用いた冷凍サイクル装置に使用していた延長配管及び／又は利用側機を、第二の冷媒と第二の潤滑油を用いた冷凍サイクル装置の延長配管及び／又は利用側機として用いる冷凍サイクル装置において、
前記第一及び第二の潤滑油を含むガス冷媒に液冷媒を混合して二相分離させ前記第一の潤滑油を分離する油回収機構を備えたことを特徴とする冷凍サイクル装置。
【請求項２】
さらに、冷媒から前記第一の潤滑油を吸着する油吸着機構を備えたことを特徴とする請求項１に記載の冷凍サイクル装置。
【請求項３】
前記油回収機構を、主冷媒回路のガス冷媒配管に設置したことを特徴とする請求項１又は２に記載の冷凍サイクル装置。
【請求項４】
前記油吸着機構を、前記油回収機構の下流に設置したことを特徴とする請求項２又は３に記載の冷凍サイクル装置。
【請求項５】
前記油吸着機構を、アキュムレータに内蔵したことを特徴とする請求項４に記載の冷凍サイクル装置。
【請求項６】
前記油吸着機構を、前記油回収機構に内蔵したことを特徴とする請求項２又は３に記載の冷凍サイクル装置。
【請求項７】
第一の冷媒と第一の潤滑油を用いた冷凍サイクル装置に使用していた延長配管及び／又は利用側機を、第二の冷媒と第二の潤滑油を用いた冷凍サイクル装置の延長配管及び／又は利用側機として用いる冷凍サイクル装置において、
前記第一及び第二の潤滑油と液冷媒とが混合する油回収機構を備え、前記油回収機構内部に二相分離した前記第一の潤滑油を分離するフィルタを備えたことを特徴とする冷凍サイクル装置。
【請求項８】
前記油吸着機構を、前記油回収機構と並列に設けた冷媒回路に設置したことを特徴とする請求項２に記載の冷凍サイクル装置。
【請求項９】
前記油吸着機構を、前記主冷媒回路の液冷媒配管に設置したことを特徴とする請求項２に記載の冷凍サイクル装置。
【請求項１０】
前記油吸着機構を、前記主冷媒回路の液冷媒配管を分岐してアキュムレータに流入させる分岐配管に設置したことを特徴とする請求項２に記載の冷凍サイクル装置。
【請求項１１】
前記油吸着機構を、圧縮機吐出側の油分離器の下流を分岐して圧縮機の吸入側に流入させる分岐配管に設置したことを特徴とする請求項２に記載の冷凍サイクル装置。
【請求項１２】
前記油吸着機構を、圧縮機吐出側の油分離器からアキュムレータに返油する返油回路に設置したことを特徴とする請求項２に記載の冷凍サイクル装置。
【請求項１３】
前記主冷媒回路に前記油回収機構をバイパスする、流通制御可能なバイパス配管を設けたことを特徴とする請求項２に記載の冷凍サイクル装置。
【請求項１４】
前記油回収機構と前記油吸着機構の運転を切換可能に設置したことを特徴とする請求項２に記載の冷凍サイクル装置。
【請求項１５】
前記油回収機構及び・又は前記油吸着機構を冷媒回路から切り離し可能に設置したことを特徴とする請求項２に記載の冷凍サイクル装置。
【請求項１６】
前記油回収機構の上流の主冷媒回路に流通制御可能なバイパス回路を設け、別の油回収器を切り離し可能に設置したことを特徴とする請求項２に記載の冷凍サイクル装置。
【請求項１７】
前記第一の冷媒がクロロフルオロカーボン系冷媒またはハイドロクロロフルオロカーボン系冷媒で、前記第一の潤滑油が鉱油であり、前記第二の冷媒としてハイドロフルオロカーボン系冷媒を用い、前記第二の潤滑油としてエステル油またはエーテル油を用いることを特徴とする請求項１〜１６のいずれかに記載の冷凍サイクル装置。
【請求項１８】
請求項１４に記載の冷凍サイクル装置を運転する運転方法において、前記油回収機構を運転して前記油吸着機構を運転しない第一のモードと、前記油回収機構を運転せず前記油吸着機構を運転する第二のモードと、前記油回収機構と前記油吸着機構とを同時に運転する第三のモードと、前記油回収機構と前記油吸着機構とをともに運転しない第四のモードとのいずれかを、運転条件に応じて適宜切り替えて運転することを特徴とする冷凍サイクル装置の運転方法。
【請求項１９】
請求項１５に記載の冷凍サイクル装置を運転する運転方法において、運転条件に応じて前記油回収機構及び・又は前記油吸着機構を冷媒回路から切り離すことを特徴とする冷凍サイクル装置の運転方法。
【請求項２０】
請求項１６に記載の冷凍サイクル装置を運転する運転方法において、運転条件に応じて前記別の油回収器を切り離すことを特徴とする冷凍サイクル装置の運転方法。
[Claims]
(1)
The extension pipe and / or the utilization side machine used for the refrigeration cycle apparatus using the first refrigerant and the first lubricating oil is replaced with the extension pipe for the refrigeration cycle apparatus using the second refrigerant and the second lubrication oil. And / or a refrigeration cycle device used as a utilization side machine,
A refrigeration cycle apparatus comprising: an oil recovery mechanism that mixes a liquid refrigerant with a gas refrigerant containing the first and second lubricating oils to separate two phases and separate the first lubricating oil.
(2)
The refrigeration cycle apparatus according to claim 1, further comprising an oil adsorption mechanism that adsorbs the first lubricating oil from a refrigerant.
(3)
The refrigeration cycle apparatus according to claim 1, wherein the oil recovery mechanism is provided in a gas refrigerant pipe of a main refrigerant circuit.
(4)
The refrigeration cycle apparatus according to claim 2, wherein the oil absorption mechanism is provided downstream of the oil recovery mechanism.
Claim 5.
The refrigeration cycle apparatus according to claim 4, wherein the oil adsorption mechanism is built in an accumulator.
6.
The refrigeration cycle apparatus according to claim 2, wherein the oil adsorption mechanism is built in the oil recovery mechanism.
7.
The extension pipe and / or the utilization side machine used for the refrigeration cycle apparatus using the first refrigerant and the first lubricating oil is replaced with the extension pipe for the refrigeration cycle apparatus using the second refrigerant and the second lubrication oil. And / or a refrigeration cycle device used as a utilization side machine,
An oil recovery mechanism for mixing the first and second lubricating oils and the liquid refrigerant is provided, and a filter for separating the first lubricating oil separated into two phases is provided inside the oil recovery mechanism. Refrigeration cycle device .
Claim 8.
The refrigeration cycle apparatus according to claim 2, wherein the oil adsorption mechanism is provided in a refrigerant circuit provided in parallel with the oil recovery mechanism.
9.
The refrigeration cycle apparatus according to claim 2, wherein the oil adsorption mechanism is provided in a liquid refrigerant pipe of the main refrigerant circuit.
10.
The refrigeration cycle apparatus according to claim 2, wherein the oil adsorption mechanism is provided on a branch pipe that branches a liquid refrigerant pipe of the main refrigerant circuit and flows into an accumulator.
11.
The refrigeration cycle apparatus according to claim 2, wherein the oil adsorption mechanism is installed in a branch pipe that branches downstream of the oil separator on the compressor discharge side and flows into the suction side of the compressor.
12.
The refrigeration cycle apparatus according to claim 2, wherein the oil adsorption mechanism is provided in an oil return circuit that returns oil from an oil separator on a compressor discharge side to an accumulator.
Claim 13
3. The refrigeration cycle apparatus according to claim 2, wherein a bypass pipe capable of controlling flow is provided in the main refrigerant circuit to bypass the oil recovery mechanism.
14.
The refrigeration cycle apparatus according to claim 2, wherein the operation of the oil recovery mechanism and the operation of the oil adsorption mechanism are switchably installed.
15.
The refrigeration cycle apparatus according to claim 2, wherein the oil recovery mechanism and / or the oil adsorption mechanism are installed so as to be detachable from a refrigerant circuit.
16.
The refrigeration cycle apparatus according to claim 2, wherein a bypass circuit capable of controlling flow is provided in a main refrigerant circuit upstream of the oil recovery mechanism, and another oil recovery device is installed so as to be detachable.
17.
The first refrigerant is a chlorofluorocarbon-based refrigerant or a hydrochlorofluorocarbon-based refrigerant, the first lubricating oil is a mineral oil, a hydrofluorocarbon-based refrigerant is used as the second refrigerant, and an ester is used as the second lubricating oil. The refrigeration cycle apparatus according to any one of claims 1 to 16 , wherein oil or ether oil is used.
18.
The operating method for operating the refrigeration cycle device according to claim 14 , wherein the first mode in which the oil recovery mechanism is operated and the oil absorption mechanism is not operated, and the oil absorption mechanism is operated without operating the oil recovery mechanism. One of a second mode of operation, a third mode of simultaneously operating the oil recovery mechanism and the oil absorption mechanism, and a fourth mode of not operating both the oil recovery mechanism and the oil absorption mechanism The method of operating the refrigeration cycle apparatus, wherein the method is operated by appropriately switching the operation according to operating conditions.
(19)
The method for operating a refrigeration cycle apparatus according to claim 15 , wherein the oil recovery mechanism and / or the oil adsorption mechanism is separated from a refrigerant circuit according to operation conditions.
20.
17. The operating method for operating a refrigeration cycle apparatus according to claim 16 , wherein the another oil recovery unit is disconnected according to operating conditions.
この発明の冷凍サイクル装置は、請求項６に記載のとおり、前記油吸着機構を、前記油回収機構に内蔵したものである。
この発明の冷凍サイクル装置は、請求項７に記載のとおり、第一の冷媒と第一の潤滑油を用いた冷凍サイクル装置に使用していた延長配管及び／又は利用側機を、第二の冷媒と第二の潤滑油を用いた冷凍サイクル装置の延長配管及び／又は利用側機として用いる冷凍サイクル装置において、 前記第一及び第二の潤滑油と液冷媒とが混合する油回収機構を備え、前記油回収機構内部に二相分離した前記第一の潤滑油を分離するフィルタを備えたものである。
According to a refrigeration cycle apparatus of the present invention, the oil adsorption mechanism is built in the oil recovery mechanism.
According to the refrigeration cycle apparatus of the present invention, the extension pipe and / or the use side machine used in the refrigeration cycle apparatus using the first refrigerant and the first lubricating oil are connected to the second refrigerant. A refrigeration cycle apparatus used as an extension pipe and / or a utilization side machine of a refrigeration cycle apparatus using a refrigerant and a second lubricating oil, comprising an oil recovery mechanism in which the first and second lubricating oils and the liquid refrigerant are mixed. And a filter for separating the first lubricating oil separated into two phases inside the oil recovery mechanism.
この発明の冷凍サイクル装置は、請求項８に記載のとおり、前記油吸着機構を、前記油回収機構と並列に設けた冷媒回路に設置したものである。 Refrigeration cycle device of the present invention, as described in claim 8, the oil suction mechanism, in which was installed in a refrigerant circuit provided in parallel with the oil recovery mechanism.
この発明の冷凍サイクル装置は、請求項９に記載のとおり、前記油吸着機構を、前記主冷媒回路の液冷媒配管に設置したものである。 Refrigeration cycle device of the present invention, as described in claim 9, said oil suction mechanism, in which was installed in the liquid refrigerant pipe of the main refrigerant circuit.
この発明の冷凍サイクル装置は、請求項１０に記載のとおり、前記油吸着機構を、前記主冷媒回路の液冷媒配管を分岐してアキュムレータに流入させる分岐配管に設置したものである。 According to a refrigeration cycle apparatus of the present invention, as described in claim 10 , the oil adsorption mechanism is installed in a branch pipe that branches a liquid refrigerant pipe of the main refrigerant circuit and flows into an accumulator.
この発明の冷凍サイクル装置は、請求項１１に記載のとおり、前記油吸着機構を、圧縮機吐出側の油分離器の下流を分岐して圧縮機の吸入側に流入させる分岐配管に設置したものである。 In the refrigeration cycle apparatus according to the present invention, as described in claim 11 , the oil adsorption mechanism is installed in a branch pipe that branches downstream of the oil separator on the compressor discharge side and flows into the suction side of the compressor. It is.
この発明の冷凍サイクル装置は、請求項１２に記載のとおり、前記油吸着機構を、圧縮機吐出側の油分離器からアキュムレータに返油する返油回路に設置したものである。 According to a refrigeration cycle apparatus of the present invention, as described in claim 12 , the oil adsorption mechanism is installed in an oil return circuit that returns oil from an oil separator on the compressor discharge side to an accumulator.
この発明の冷凍サイクル装置は、請求項１３に記載のとおり、前記主冷媒回路に前記油回収機構をバイパスする、流通制御可能なバイパス配管を設けたものである。 According to a thirteenth aspect of the present invention, in the refrigeration cycle device, a flow controllable bypass pipe that bypasses the oil recovery mechanism is provided in the main refrigerant circuit.
この発明の冷凍サイクル装置は、請求項１４に記載のとおり、前記油回収機構と前記油吸着機構の運転を切換可能に設置したものである。 Refrigeration cycle device of the present invention, as described in claim 14, the operation of the oil recovery mechanism and the oil suction mechanism is obtained by installing switchably.
この発明の冷凍サイクル装置は、請求項１５に記載のとおり、前記油回収機構及び・又は前記油吸着機構を冷媒回路から切り離し可能に設置したものである。 Refrigeration cycle device of the present invention, as described in claim 15, said oil recovery mechanism and, or the oil suction mechanism is obtained by installed to be separated from the refrigerant circuit.
この発明の冷凍サイクル装置は、請求項１６に記載のとおり、前記油回収機構の上流の主冷媒回路に流通制御可能なバイパス回路を設け、別の油回収器を切り離し可能に設置したものである。 Refrigeration cycle device of the present invention, as described in claim 16, the distribution controllable bypass circuit to the main refrigerant circuit upstream of the oil recovery mechanism is provided, in which was mounted separably another oil recovery equipment .
この発明の冷凍サイクル装置は、請求項１７に記載のとおり、前記第一の冷媒がクロロフルオロカーボン系冷媒またはハイドロクロロフルオロカーボン系冷媒で、前記第一の潤滑油が鉱油であり、前記第二の冷媒としてハイドロフルオロカーボン系冷媒を用い、前記第二の潤滑油としてエステル油またはエーテル油を用いるものである。 Refrigeration cycle device of the present invention, as described in claim 17, wherein in the first refrigerant chlorofluorocarbon-based refrigerant or hydrochlorofluorocarbon-based coolant, the first lubricating oil is mineral oil, said second refrigerant , A hydrofluorocarbon-based refrigerant is used, and an ester oil or an ether oil is used as the second lubricating oil.
この発明の冷凍サイクル装置の運転方法は、請求項１８に記載のとおり、請求項１３に記載の冷凍サイクル装置を運転する運転方法において、前記油回収機構を運転して前記油吸着機構を運転しない第一のモードと、前記油回収機構を運転せず前記油吸着機構を運転する第二のモードと、前記油回収機構と前記油吸着機構とを同時に運転する第三のモードと、前記油回収機構と前記油吸着機構とをともに運転しない第四のモードとのいずれかを、運転条件に応じて適宜切り替えて運転するものである。 Method of operating a refrigeration cycle device of the present invention, as described in claim 18, in the operation method of operating a refrigeration cycle apparatus according to claim 13, do not drive the oil suction mechanism to operate the oil recovery mechanism A first mode, a second mode in which the oil absorption mechanism is operated without operating the oil recovery mechanism, a third mode in which the oil recovery mechanism and the oil absorption mechanism are simultaneously operated, and The operation is performed by appropriately switching any one of a fourth mode in which both the mechanism and the oil absorption mechanism are not operated according to operating conditions.
この発明の冷凍サイクル装置の運転方法は、請求項１９に記載のとおり、請求項１４に記載の冷凍サイクル装置を運転する運転方法において、運転条件に応じて前記油回収機構及び・又は前記油吸着機構を冷媒回路から切り離すものである。 Method of operating a refrigeration cycle device of the present invention, as described in claim 19, in the operation method of operating a refrigeration cycle apparatus according to claim 14, wherein the oil recovery mechanism in accordance with the operating condition and, or the oil suction The mechanism is separated from the refrigerant circuit.
この発明の冷凍サイクル装置の運転方法は、請求項２０に記載のとおり、請求項１５に記載の冷凍サイクル装置を運転する運転方法において、運転条件に応じて前記別の油回収器を切り離すものである。 According to a twentieth aspect of the present invention, there is provided an operating method for operating a refrigeration cycle apparatus according to the twelfth aspect, wherein the another oil recovery device is separated according to operating conditions. is there.
【００６４】
【発明の効果】
この発明の冷凍サイクル装置は、請求項１〜１２に記載のとおり、第一の冷媒と第一の潤滑油を用いた冷凍サイクル装置に使用していた延長配管及び／又は利用側機を、第二の冷媒と第二の潤滑油を用いた冷凍サイクル装置の延長配管及び／又は利用側機として用いる冷凍サイクル装置において、第一及び第二の潤滑油を含むガス冷媒に液冷媒を混合して二相分離させ前記第一の潤滑油を分離する油回収機構を備えた。また、さらに冷媒から前記第一の潤滑油を吸着する油吸着機構を備えた。
これにより、圧縮機内の鉱油濃度の一時的な増加を防ぎ、エステル油の劣化・スラッジの発生を抑え、冷凍サイクルの信頼性を高めることができる。
[0064]
【The invention's effect】
As described in claims 1 to 12 , the refrigeration cycle apparatus of the present invention includes an extension pipe and / or a use side machine used in a refrigeration cycle apparatus using a first refrigerant and a first lubricating oil. In a refrigeration cycle apparatus used as an extension pipe and / or a utilization side machine of a refrigeration cycle apparatus using a second refrigerant and a second lubricating oil, a liquid refrigerant is mixed with a gas refrigerant containing the first and second lubricating oils. An oil recovery mechanism for separating the first lubricating oil by two-phase separation is provided. Further, an oil adsorption mechanism for adsorbing the first lubricating oil from the refrigerant is provided.
Thus, it is possible to prevent a temporary increase in the concentration of mineral oil in the compressor, suppress deterioration of ester oil and generation of sludge, and increase the reliability of the refrigeration cycle.
また、この発明の冷凍サイクル装置は、請求項１３に記載のとおり、主冷媒回路に油回収機構をバイパスする、流通制御可能なバイパス配管を設けたものである。
これにより、油回収機構からの第一の潤滑油の流出を防止し、その分離を確実に行い冷凍サイクルの信頼性を高めることができる。
In the refrigeration cycle apparatus according to the present invention, as described in claim 13 , a bypass pipe capable of controlling flow is provided in the main refrigerant circuit to bypass the oil recovery mechanism.
Thus, it is possible to prevent the first lubricating oil from flowing out from the oil recovery mechanism, to reliably separate the first lubricating oil, and to enhance the reliability of the refrigeration cycle.
また、この発明の冷凍サイクル装置は、請求項１４に記載のとおり、油回収機構と油吸着機構の運転を切換可能に設置したものである。
これにより、冷凍サイクル内で混合した第一の潤滑油と第二の潤滑油とを確実に分離し、第二の潤滑油の劣化を防止し、リプレース時の圧縮機の信頼性を高め、スラッジの生成による毛細管のつまりを防止することで冷凍サイクルの信頼性を高めることができる。
Further, the refrigeration cycle apparatus of the present invention, as described in claim 14, in which was placed the operation of the oil recovery mechanism and an oil suction mechanism switchably.
This ensures that the first lubricating oil and the second lubricating oil mixed in the refrigeration cycle are separated, preventing deterioration of the second lubricating oil, increasing the reliability of the compressor during replacement, and improving sludge The reliability of the refrigeration cycle can be improved by preventing the clogging of the capillaries due to the generation of.
また、この発明の冷凍サイクル装置は、請求項１５に記載のとおり、油回収機構及び・又は油吸着機構を冷媒回路から切り離し可能に設置したものである。
これにより、油回収機構及び・又は油吸着機構からの第一の潤滑油の流出を防止し、その分離を確実に行い冷凍サイクルの信頼性を高めることができる。
Further, the refrigeration cycle apparatus of the present invention, as described in claim 15, in which the oil recovery mechanism and-or oil suction mechanism was installed to be separated from the refrigerant circuit.
Accordingly, it is possible to prevent the first lubricating oil from flowing out from the oil recovery mechanism and / or the oil adsorption mechanism, to reliably separate the first lubricating oil, and to enhance the reliability of the refrigeration cycle.
また、この発明の冷凍サイクル装置は、請求項１６に記載のとおり、油回収機構の上流の主冷媒回路に流通制御可能なバイパス回路を設け、別の油回収器を切り離し可能に設置したものである。
これにより、ユニット施工後の初期運転時に回収される第一の潤滑油に富む油を全て別の回収器に回収することで、油回収機構および油吸着機構をコンパクトで安価に製造することができる。
Further, the refrigeration cycle apparatus of the present invention, according to as described in claim 16, the distribution controllable bypass circuit to the main refrigerant circuit upstream of the oil recovery mechanism is provided, in which the installed separably another oil recovery equipment is there.
Thereby, the oil recovery mechanism and the oil absorption mechanism can be manufactured compactly and inexpensively by collecting all the oil rich in the first lubricating oil recovered during the initial operation after the unit construction in another recovery device. .
この発明の冷凍サイクル装置は、請求項１７に記載のとおり、新規の冷媒としてハイドロフルオロカーボン系冷媒を用い、潤滑油としてエステル油またはエーテル油を用いるものである。
これにより、環境対策上安全な冷凍サイクル装置を得ることができる。
Refrigeration cycle device of the present invention, as described in claim 17, using a hydrofluorocarbon refrigerant as the new refrigerant, is to use an ester oil or ether oil as a lubricant.
Thus, a refrigeration cycle device that is safe in terms of environmental measures can be obtained.
また、この発明の冷凍サイクル装置の運転方法は、請求項１８に記載のとおり、油回収機構を運転して油吸着機構を運転しない第一のモードと、油回収機構を運転せず油吸着機構を運転する第二のモードと、油回収機構と油吸着機構とを同時に運転する第三のモードと、油回収機構と油吸着機構とをともに運転しない第四のモードとのいずれかを、運転条件に応じて、適宜切り替えて運転することができるものである。
これにより、冷凍サイクル内で混合した第一の潤滑油と第二の潤滑油を確実に分離し、第二の潤滑油の劣化を防止し、リプレース時の圧縮機の信頼性を高め、スラッジの生成による毛細管のつまりを防止することで冷凍サイクルの信頼性を高めることができる。
Also, the operating method of the refrigeration cycle apparatus of the present invention, according to as described in claim 18, the oil recovery mechanism driving the first mode without operating the oil adsorption mechanism, the oil suction mechanism without operating the oil recovery mechanism Operating either the second mode of operating the oil recovery mechanism, the third mode of operating the oil recovery mechanism and the oil absorption mechanism simultaneously, or the fourth mode of not operating the oil recovery mechanism and the oil absorption mechanism together. It can be operated by appropriately switching according to conditions.
As a result, the first lubricating oil and the second lubricating oil mixed in the refrigeration cycle are reliably separated, the deterioration of the second lubricating oil is prevented, the reliability of the compressor at the time of replacement is improved, and sludge is removed. Prevention of the clogging of the capillaries due to generation can increase the reliability of the refrigeration cycle.
また、この発明の冷凍サイクル装置の運転方法は、請求項１９に記載のとおり、運転条件に応じて、油回収機構及び・又は油吸着機構を冷媒回路から切り離すことができるものである。
これにより、油回収機構及び・又は油吸着機構からの第一の潤滑油の流出を防止し、その分離を確実に行い冷凍サイクルの信頼性を高めることができる。
Also, the operating method of the refrigeration cycle apparatus of the present invention, as described in claim 19, in accordance with the operating condition, in which the oil recovery mechanism and-or oil adsorption mechanism can be disconnected from the refrigerant circuit.
Accordingly, it is possible to prevent the first lubricating oil from flowing out from the oil recovery mechanism and / or the oil adsorption mechanism, to reliably separate the first lubricating oil, and to enhance the reliability of the refrigeration cycle.
また、この発明の冷凍サイクル装置の運転方法は、請求項２０に記載のとおり、運転条件に応じて、別に設けた油回収器を切り離すことができるものである。
これにより、ユニット施工後の初期運転時に回収される第一の潤滑油に富む油を全て別の油回収器に回収することで、油回収機構及び油吸着機構をコンパクトで安価に製造することができる。
Also, the operating method of the refrigeration cycle apparatus of the present invention, as described in claim 20, in accordance with the operating condition, in which can be disconnected separately provided oil collector.
As a result, the oil recovery mechanism and the oil adsorption mechanism can be manufactured compactly and inexpensively by collecting all of the first lubricating oil-rich oil collected during the initial operation after the unit is installed in another oil recovery unit. it can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001049646A JP4554098B2 (en) | 2001-02-26 | 2001-02-26 | Refrigeration cycle apparatus and operation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001049646A JP4554098B2 (en) | 2001-02-26 | 2001-02-26 | Refrigeration cycle apparatus and operation method thereof |
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| JP2002250576A JP2002250576A (en) | 2002-09-06 |
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| JP4554098B2 JP4554098B2 (en) | 2010-09-29 |
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| JP2004263885A (en) | 2003-02-07 | 2004-09-24 | Daikin Ind Ltd | Cleaning method of refrigerant pipe, renewing method of air conditioner and air conditioner |
| CN107353973B9 (en) * | 2016-05-10 | 2022-12-06 | 特灵国际有限公司 | Lubricant blends for reducing refrigerant solubility |
| CN113654192B (en) * | 2021-07-15 | 2023-04-18 | 青岛海尔空调器有限总公司 | Method for controlling self-cleaning in pipe of outdoor heat exchanger |
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| JPH074789A (en) * | 1993-06-17 | 1995-01-10 | Sanyo Electric Co Ltd | Filter for removing impurity refrigerating cycle using refrigerant of hfc series |
| JPH08219596A (en) * | 1995-02-13 | 1996-08-30 | Mitsubishi Heavy Ind Ltd | Oil separator |
| JPH08271098A (en) * | 1995-04-03 | 1996-10-18 | Matsushita Refrig Co Ltd | Refrigerating system |
| JPH10153362A (en) * | 1996-11-21 | 1998-06-09 | Sanyo Electric Co Ltd | Refrigerating plant |
| JP4169875B2 (en) * | 1999-08-03 | 2008-10-22 | 三菱電機株式会社 | Refrigeration cycle equipment |
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