JPH05288414A - Freezer device - Google Patents

Freezer device

Info

Publication number
JPH05288414A
JPH05288414A JP11088892A JP11088892A JPH05288414A JP H05288414 A JPH05288414 A JP H05288414A JP 11088892 A JP11088892 A JP 11088892A JP 11088892 A JP11088892 A JP 11088892A JP H05288414 A JPH05288414 A JP H05288414A
Authority
JP
Japan
Prior art keywords
oil
valve
compressor
valves
pipe
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.)
Granted
Application number
JP11088892A
Other languages
Japanese (ja)
Other versions
JP3133477B2 (en
Inventor
Kazuhiro Shimura
一廣 志村
Takeshi Okubo
健 大久保
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP04110888A priority Critical patent/JP3133477B2/en
Publication of JPH05288414A publication Critical patent/JPH05288414A/en
Application granted granted Critical
Publication of JP3133477B2 publication Critical patent/JP3133477B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To prevent oil from invading into a valve and an operating movement of a plunger from being dulled by a method wherein oil separated by an oil separator is returned back to a compressor through a returning pipe, an oil returning amount in the return pipe is adjusted by a valve and the valve is arranged at a higher location than that of the oil separator. CONSTITUTION:An outdoor unit 11 of a freezer device is constructed such that an accumulator 101, a compressor 111, an oil separator 121, a four-way valve 131, an outdoor heat exchanger 141 and a refrigerant adjuster 161 and the like are connected in sequence. Oil separated by the oil separator 121 is returned back to the compressor 111 through the return pipe. The return pipe is provided with each of valves 231 and 251 for use in adjusting an oil returning volume. In this case, each of the valves 231 and 251 is arranged at a higher location than that of the oil separator 121. When the outdoor unit 11 is stopped for a long period of time, oil is prevented from flowing, reaching up to the position of each of valves 231 and 251 and staying there. With such an arrangement, the oil is prevented from entering each of the valves 231 and 251, and the movement of the plunger is prevented from being dulled.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、油分離器で分離された
油を圧縮機へ戻す戻し管を備える冷凍装置に係り、とく
に戻し管に設けられた油の戻り量を調整する弁の改良に
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating apparatus provided with a return pipe for returning oil separated by an oil separator to a compressor, and more particularly to an improvement of a valve provided in the return pipe for adjusting the amount of returned oil. Regarding

【0002】[0002]

【従来の技術】圧縮機と、この圧縮機から吐出された冷
媒中の油を分離する油分離器と、この油分離器で分離さ
れた油を圧縮機へ戻す戻し管とを備え、この戻し管に油
の戻り量を調整する弁を設けた冷凍装置として、出願人
は特願平2−307923号を提案している。
2. Description of the Related Art A compressor, an oil separator for separating oil in a refrigerant discharged from the compressor, and a return pipe for returning the oil separated by the oil separator to the compressor are provided. The applicant has proposed Japanese Patent Application No. 2-307923 as a refrigerating device in which a pipe is provided with a valve for adjusting the amount of returned oil.

【0003】この提案で使用されている弁は、一般的に
図3に示すように、入口パイプ51及び出口パイプ53
を有するハウジング55と、このハウジング55の上端
に設けられる吸引子56、コイル57及びコイルホルダ
59を有する。そして、ハウジング55内にはプランジ
ャ61が摺動自在に設けられ、コイル57に通電させ
て、ばね63のばね力に抗して吸引子56によりプラン
ジャ61が上方に吸引されると、入口パイプ51及び出
口パイプ53が連通し、通電が解かれると、プランジャ
61がばね63により付勢されて、プランジャ61先端
のボール65が両パイプ51,53をつなぐ通路52を
塞ぐ構成である。
The valve used in this proposal is generally an inlet pipe 51 and an outlet pipe 53, as shown in FIG.
And a suction element 56, a coil 57, and a coil holder 59 provided at the upper end of the housing 55. A plunger 61 is slidably provided in the housing 55. When the coil 57 is energized and the plunger 61 is sucked upward by the suction element 56 against the spring force of the spring 63, the inlet pipe 51 Also, when the outlet pipe 53 is communicated and the energization is released, the plunger 61 is biased by the spring 63, and the ball 65 at the tip of the plunger 61 blocks the passage 52 connecting the pipes 51 and 53.

【0004】また、上記構成の弁は油の戻し管に設けら
れるので、入口パイプ51及び出口パイプ53を通じて
は、油がフロン22などの冷媒に混じって流れる構成で
ある。
Further, since the valve having the above structure is provided in the oil return pipe, the oil flows through the inlet pipe 51 and the outlet pipe 53 mixed with the refrigerant such as CFC 22.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、従来の
ものでは、上記油分離器が弁よりも高所にあるので、長
時間に亘って圧縮機の運転が停止した場合などに、油分
離器からの油が入口パイプ51を通じてハウジング55
の内壁とプランジャ61とのわずかな隙間66を介して
ばね63部の空間67内に流入し、そこに滞留するの
で、その後、コイル57に通電した際などに、油の粘性
によりプランジャ61の動きが悪くなるという問題があ
る。なお、運転中であれば、上記したように、フロン2
2等の冷媒に混じって油が流されるので、油の粘性が低
くなり、かりに空間67内に流入したとしてもプランジ
ャ61の動きが阻害されることはない。
However, in the conventional one, since the oil separator is located higher than the valve, the oil separator is not operated when the operation of the compressor is stopped for a long time. Oil from the housing 55 through the inlet pipe 51
Flows into the space 67 of the spring 63 through a slight gap 66 between the inner wall of the plunger 61 and the plunger 61, and stays there. Therefore, when the coil 57 is energized, the viscosity of the oil causes the plunger 61 to move. There is a problem that it gets worse. If the vehicle is in operation, as described above, Freon 2
Since the oil is mixed with the refrigerant such as 2 to flow the oil, the viscosity of the oil becomes low, and even if the oil flows into the space 67, the movement of the plunger 61 is not hindered.

【0006】そこで、本発明の目的は、上述した従来の
技術が有する問題点を解消し、油の戻り量を調整する弁
の動きがいずれの場合でも阻害されることのない冷凍装
置を提供することにある。
[0006] Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art and to provide a refrigeration system in which the movement of the valve for adjusting the amount of oil return is not obstructed in any case. Especially.

【0007】[0007]

【課題を解決するための手段】上記目的を達成するため
に、本発明は、圧縮機と、この圧縮機から吐出された冷
媒中の油を分離する油分離器と、この油分離器で分離さ
れた油を圧縮機へ戻す戻し管とを備え、この戻し管に油
の戻り量を調整する弁を配置した冷凍装置において、弁
を油分離器よりも高所に配置したことを特徴とするもの
である。
In order to achieve the above object, the present invention provides a compressor, an oil separator for separating the oil in the refrigerant discharged from the compressor, and an oil separator for separating the oil. In a refrigerating apparatus having a return pipe for returning the recovered oil to the compressor and arranging a valve for adjusting the return amount of the oil in the return pipe, the valve is arranged at a higher position than the oil separator. It is a thing.

【0008】[0008]

【作用】室外ユニットの停止時間が長時間に亘って、こ
れにより油分離器からの油が高所から低所に流れる作用
により流出したとしても、本発明によれば、弁が、油分
離器よりも高所に配置されているので、潤滑油は弁の位
置にまで達することがなく、その内部に浸入することは
なく、よってプランジャの動きが油により阻害されるこ
とはない。
According to the present invention, even if the oil from the oil separator flows out due to the action of flowing from the high place to the low place due to a long stop time of the outdoor unit, according to the present invention, the valve is Since it is located higher than, the lubricating oil does not reach the position of the valve and does not penetrate into it, so that the movement of the plunger is not disturbed by the oil.

【0009】[0009]

【実施例】以下、本発明の実施例を図面を参照して説明
する。
Embodiments of the present invention will be described below with reference to the drawings.

【0010】図1において、11 ,12 は室外ユニット
を示し、3は室内ユニットを示している。室外ユニット
1 は、アキュームレータ101 と、圧縮機111 と、
油分離器121 と、四方弁131 と、室外熱交換器14
1 と、室外電動式膨脹弁151 と、冷媒調節器161
で構成されている。
In FIG. 1, 1 1 and 1 2 are outdoor units, and 3 is an indoor unit. The outdoor unit 1 1 includes an accumulator 10 1 , a compressor 11 1 , and
Oil separator 12 1 , four-way valve 13 1 and outdoor heat exchanger 14
1 , an outdoor electric expansion valve 15 1 and a refrigerant regulator 16 1 .

【0011】室外ユニット12 については、室外ユニッ
ト11 と同じであるので、説明を省略する。また、室内
ユニット3は、室内熱交換器34と、室内電動式膨脹弁
35(以下「室内メカ弁35」という。)とで構成され
る。この室内ユニット3からは、ガス管5及び液管7か
らなるユニット間配管が延び、このユニット間配管に
は、室外ユニット11 ,12 が並列に接続される。
Since the outdoor unit 1 2 is the same as the outdoor unit 1 1 , its explanation is omitted. The indoor unit 3 includes an indoor heat exchanger 34 and an indoor electric expansion valve 35 (hereinafter referred to as "indoor mechanical valve 35"). From this indoor unit 3, an inter-unit pipe consisting of a gas pipe 5 and a liquid pipe 7 extends, and the outdoor units 1 1 and 1 2 are connected in parallel to this inter-unit pipe.

【0012】油分離器121 は、圧縮機111 から吐出
される冷媒中の潤滑油を分離するものであり、ここで分
離された潤滑油は戻し管211 ,221 を通じて圧縮機
111 に戻される。戻し管211 には開閉弁231 ,2
1 が設けられる。戻し管211 と圧縮機111 の吸込
管とは管路65でつながれる。
The oil separator 12 1 separates the lubricating oil in the refrigerant discharged from the compressor 11 1, and the separated lubricating oil passes through the return pipes 21 1 and 22 1 to the compressor 11 1 Returned to. The return pipe 21 1 has on-off valves 23 1 , 2
5 1 is provided. The return pipe 21 1 and the suction pipe of the compressor 11 1 are connected by a pipe line 65.

【0013】室外ユニット11 ,12 の戻し管211
212 どうしは、バランス管51によりつながれる。こ
のバランス管51は、補助管531 を通じて、四方弁1
1とチェッキ弁181 との間につながれ、この補助管
531 には、開閉弁551 が設けられる。
Return pipes 21 1 of the outdoor units 1 1 and 1 2 ,
21 2 are connected by a balance pipe 51. The balance pipe 51, through the auxiliary pipe 53 1, the four-way valve 1
An on-off valve 55 1 is provided in the auxiliary pipe 53 1 which is connected between 3 1 and the check valve 18 1 .

【0014】冷媒調節器161 は、補助管571 を通じ
てバランス管51につながれ、補助管571 には開閉弁
591 が設けられる。冷媒調節器161 の液管7には開
閉弁601 が設けられる。この開閉弁601 は一方向性
を有する電磁弁であり、図中で左から右への流れを止め
ることはできない。
[0014] refrigerant regulator 16 1 is connected to the balance pipe 51 through the auxiliary pipe 57 1, closing valve 59 1 is provided in the auxiliary pipe 57 1. An on-off valve 60 1 is provided in the liquid pipe 7 of the refrigerant regulator 16 1 . This on-off valve 60 1 is a one-way solenoid valve and cannot stop the flow from left to right in the figure.

【0015】しかして、この実施例によれば、潤滑油の
戻し管211 に設けられる開閉弁231 ,251 の設置
位置に特徴があり、図2を参照して、少なくとも開閉弁
231 ,251 は、油分離器121 よりも高所に配置さ
れている。
However, this embodiment is characterized by the installation positions of the opening / closing valves 23 1 and 25 1 provided in the lubricating oil return pipe 21 1 , and at least the opening / closing valve 23 1 is referred to with reference to FIG. , 25 1 are located higher than the oil separator 12 1 .

【0016】これら開閉弁231 ,251 の構成は、従
来のものと全く同じであり、図3に示すように、入口パ
イプ51及び出口パイプ53を有するハウジング55
と、このハウジング55の上端に設けられる吸引子5
6、コイル57及びコイルホルダ59を有する。そし
て、ハウジング55内にはプランジャ61が摺動自在に
設けられ、コイル57に通電させて、ばね63のばね力
に抗して吸引子56によりプランジャ61が上方に吸引
されると、入口パイプ51及び出口パイプ53が連通
し、通電が解かれると、プランジャ61がばね63によ
り付勢されて、プランジャ61先端のボール65が通路
52を塞ぐ構成である。
The construction of these on-off valves 23 1 and 25 1 is exactly the same as the conventional one, and as shown in FIG. 3, a housing 55 having an inlet pipe 51 and an outlet pipe 53.
And the suction element 5 provided at the upper end of the housing 55
6, a coil 57 and a coil holder 59. A plunger 61 is slidably provided in the housing 55. When the coil 57 is energized and the plunger 61 is sucked upward by the suction element 56 against the spring force of the spring 63, the inlet pipe 51 When the outlet pipe 53 and the outlet pipe 53 communicate with each other and the power supply is released, the plunger 61 is biased by the spring 63, and the ball 65 at the tip of the plunger 61 closes the passage 52.

【0017】次に、作用を説明する。Next, the operation will be described.

【0018】四方弁131 ,132 が、図1に示すよう
に切替わると、冷媒は、同図中に矢印で示す方向に流れ
る。この場合には、室外ユニット11 ,12 はともに運
転され、室外電動式膨脹弁151 ,152 、及び室内メ
カ弁35は負荷に応じて開度調整される。室外熱交換器
141 ,142 は蒸発器として作用し、室内熱交換器3
4は凝縮器として作用する。即ち、室内熱交換器34か
らは温風が送出され、暖房運転が行われる。
When the four-way valves 13 1 and 13 2 are switched as shown in FIG. 1, the refrigerant flows in the direction indicated by the arrow in the figure. In this case, the outdoor unit 1 1, 1 2 are both operated, the outdoor electric expansion valve 15 1, 15 2, and the indoor mechanical valve 35 is opening control according to the load. The outdoor heat exchangers 14 1 and 14 2 function as evaporators, and the indoor heat exchanger 3
4 acts as a condenser. That is, warm air is sent from the indoor heat exchanger 34, and heating operation is performed.

【0019】四方弁131 ,132 が、図示と反対に切
替わると、冷媒は、同図中で矢印と反対の方向に流れ
る。この場合には、室外ユニット11 ,12 はともに運
転され、室外電動式膨脹弁151 ,152 は略全開で、
室内メカ弁35は負荷に応じて開度調整される。室外熱
交換器141 ,142 は凝縮器として作用し、室内熱交
換器34は蒸発器として作用する。即ち、室内熱交換器
34からは冷風が送出され、冷房運転が行われる。
When the four-way valves 13 1 and 13 2 are switched in the opposite direction to that shown in the figure, the refrigerant flows in the direction opposite to the arrow in the figure. In this case, the outdoor unit 1 1, 1 2 are both operated, the outdoor electric expansion valve 15 1, 15 2 is substantially fully opened,
The opening degree of the indoor mechanical valve 35 is adjusted according to the load. The outdoor heat exchangers 14 1 and 14 2 act as condensers, and the indoor heat exchanger 34 acts as an evaporator. That is, the cool air is sent from the indoor heat exchanger 34, and the cooling operation is performed.

【0020】ところで、室外ユニット11 ,12 の運転
中において、油分離器121 ,122 で分離される油
は、油分離器121 ,122 の下部につながれた戻し管
211,212 、及び油分離器121 ,122 の上部に
つながれた戻し管221 ,222 を通じて圧縮器1
1 ,112 に戻される。しかして、戻し管211 ,2
2には、上記のように開閉弁231 ,251 ,2
2 ,252 が設けられるので、戻し管211 ,212
を通じて戻される油は、この開閉弁231 ,251 ,2
2 ,252 を通過して戻ることになる。
By the way, in the outdoor unit 1 1, 1 2 in operation, the oil separated by the oil separator 12 1, 12 2, oil separator 12 1, 12 2 of the return pipe 21 1 which is connected to the lower, 21 2, and the oil separator 12 1, 12 2 of the return pipe 22 1 which is connected to the upper, 22 2 through compressor 1
It is returned to 1 1 and 11 2 . Then, the return pipes 21 1 and 2
1 to 2, on-off valve 23 1 as described above, 25 1, 2
Since 3 2 and 25 2 are provided, the return pipes 21 1 and 21 2
The oil returned through the on-off valve 23 1 , 25 1 , 2
It will pass through 3 2 , 25 2 and return.

【0021】これが運転中であれば、戻される油はフロ
ン22等の冷媒に混じって戻されるので、油の粘性は低
く、開閉弁231 ,251 ,232 ,252 の空間67
内に油が流入してもプランジャ61の動きが阻害される
ことはない。
When this is in operation, the oil to be returned is mixed with the refrigerant such as Freon 22 and returned, so that the viscosity of the oil is low and the space 67 of the on-off valves 23 1 , 25 1 , 23 2 , 25 2
Even if the oil flows in, the movement of the plunger 61 is not hindered.

【0022】しかしながら、マルチ形空気調和装置にお
いては、ある室外ユニットを運転させながら、となりの
室外ユニットを停止させる場合がある。従来のもので
は、室外ユニットの停止時間が長時間に亘る場合には、
油分離器121 ,122 からの油が高所から低所に流れ
る作用により流出し、図3を参照して、開閉弁231
251 ,232 ,252 の入口51を通じてばね63部
の空間67内に流入し、そこに滞留するので、その後、
コイル57に通電した際などに、油の粘性によりプラン
ジャ61の動きが悪くなる恐れが生じる。
However, in a multi-type air conditioner, a certain outdoor unit may be operated while the next outdoor unit is stopped. In the conventional type, when the stop time of the outdoor unit is long,
Oil from the oil separator 12 1, 12 2 flows out under the action of flowing at low from a height, with reference to FIG. 3, the on-off valve 23 1,
Since it flows into the space 67 of the spring 63 through the inlet 51 of 25 1 , 23 2 , 25 2 and stays there, after that,
When the coil 57 is energized, the viscosity of the oil may impair the movement of the plunger 61.

【0023】しかして、この実施例によれば、図2を参
照して、開閉弁231 ,251 ,232 ,252 が油分
離器よりも高所に配置されているので、室外ユニットの
停止中に、潤滑油は開閉弁の位置に達することがなく、
潤滑油の戻りはなくなり、従って、高粘度の油が開閉弁
231 ,251 ,232 ,252 の空間67内に流入す
ることはなく、プランジャ61の動きは常にスムーズに
なる。
However, according to this embodiment, referring to FIG. 2, since the on-off valves 23 1 , 25 1 , 23 2 , 25 2 are arranged at a higher position than the oil separator, the outdoor unit The lubricating oil does not reach the position of the on-off valve during
The lubricating oil does not return, so that the high-viscosity oil does not flow into the space 67 of the on-off valves 23 1 , 25 1 , 23 2 , 25 2 , and the movement of the plunger 61 is always smooth.

【0024】以上、一実施例に基づいて本発明を説明し
たが、本発明は、これに限定されるものでないことは明
らかであり、例えば、開閉弁231 ,251 ,232
252 以外の弁でも、油が循環するライン(バランス管
51)に設けられる弁551,552 ,591 ,592
であれば、それを高所に配置することが望ましい。
Although the present invention has been described based on one embodiment, it is obvious that the present invention is not limited to this. For example, the on-off valves 23 1 , 25 1 , 23 2 ,
Even with valves other than 25 2 , valves 55 1 , 55 2 , 59 1 , 59 2 provided in the oil circulation line (balance pipe 51)
If so, it is desirable to place it in a high place.

【0025】[0025]

【発明の効果】以上の説明から明らかなように、本発明
によれば、弁を油分離器よりも高所に配置したので、室
外ユニットの停止時間が長時間に亘る場合であっても、
弁の内部に油が浸入することはなく、油の粘性によりプ
ランジャの動きが悪くなることもない。
As is apparent from the above description, according to the present invention, since the valve is arranged at a higher place than the oil separator, even when the outdoor unit is stopped for a long time,
No oil will enter the inside of the valve, and the viscosity of the oil will not impair the movement of the plunger.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明による一実施例を示す冷媒回路図であ
る。
FIG. 1 is a refrigerant circuit diagram showing an embodiment according to the present invention.

【図2】同じく弁の配置を示す図である。FIG. 2 is a view showing the arrangement of valves as well.

【図3】弁の構造を示す断面図である。FIG. 3 is a sectional view showing the structure of the valve.

【符号の説明】[Explanation of symbols]

1 ,12 室外ユニット 3 室内ユニット 101 ,102 アキュームレータ 111 ,112 圧縮機 121 ,122 油分離器 211 ,212 戻し管 231 ,251 ,232 ,252 1 1 , 1 2 Outdoor unit 3 Indoor unit 10 1 , 10 2 Accumulator 11 1 , 11 2 Compressor 12 1 , 12 2 Oil separator 21 1 , 21 2 Return pipe 23 1 , 25 1 , 23 2 , 25 2 valve

【手続補正書】[Procedure amendment]

【提出日】平成4年4月20日[Submission date] April 20, 1992

【手続補正1】[Procedure Amendment 1]

【補正対象書類名】図面[Document name to be corrected] Drawing

【補正対象項目名】図3[Name of item to be corrected] Figure 3

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【図3】 [Figure 3]

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 圧縮機と、この圧縮機から吐出された冷
媒中の油を分離する油分離器と、この油分離器で分離さ
れた油を前記圧縮機へ戻す戻し管とを備え、この戻し管
に油の戻り量を調整する弁を配置した冷凍装置におい
て、前記弁を前記油分離器よりも高所に配置したことを
特徴とする冷凍装置。
1. A compressor comprising: a compressor; an oil separator for separating oil in the refrigerant discharged from the compressor; and a return pipe for returning the oil separated by the oil separator to the compressor, A refrigeration system in which a valve for adjusting the amount of returned oil is arranged in a return pipe, wherein the valve is arranged at a higher position than the oil separator.
JP04110888A 1992-04-03 1992-04-03 Refrigeration equipment Expired - Fee Related JP3133477B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04110888A JP3133477B2 (en) 1992-04-03 1992-04-03 Refrigeration equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04110888A JP3133477B2 (en) 1992-04-03 1992-04-03 Refrigeration equipment

Publications (2)

Publication Number Publication Date
JPH05288414A true JPH05288414A (en) 1993-11-02
JP3133477B2 JP3133477B2 (en) 2001-02-05

Family

ID=14547237

Family Applications (1)

Application Number Title Priority Date Filing Date
JP04110888A Expired - Fee Related JP3133477B2 (en) 1992-04-03 1992-04-03 Refrigeration equipment

Country Status (1)

Country Link
JP (1) JP3133477B2 (en)

Also Published As

Publication number Publication date
JP3133477B2 (en) 2001-02-05

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