JPH05172409A - Refrigerating cycle - Google Patents
Refrigerating cycleInfo
- Publication number
- JPH05172409A JPH05172409A JP34279591A JP34279591A JPH05172409A JP H05172409 A JPH05172409 A JP H05172409A JP 34279591 A JP34279591 A JP 34279591A JP 34279591 A JP34279591 A JP 34279591A JP H05172409 A JPH05172409 A JP H05172409A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- compressor
- temperature
- compressor body
- passage
- 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.)
- Pending
Links
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- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は圧縮機本体から吐出され
た冷媒により該圧縮機本体を収納した密閉容器内を冷却
し、或いは加熱するようにした冷凍サイクルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating cycle in which a refrigerant discharged from a compressor body cools or heats a hermetically sealed container containing the compressor body.
【０００２】[0002]
【従来の技術】例えば自動販売機などの冷凍サイクルに
あって、その圧縮機としては、通常、密閉形のものが多
く使用されている。この密閉形の圧縮機は、周知のよう
に、密閉容器内に圧縮機本体及びこの圧縮機本体を駆動
する電動機を収納して構成されており、その密閉容器内
には軸受部分などを潤滑するための潤滑油が溜められて
いる。2. Description of the Related Art In a refrigerating cycle such as an automatic vending machine, a compressor of a hermetic type is usually used as a compressor. As is well known, this hermetic compressor is configured by accommodating a compressor body and an electric motor for driving the compressor body in a hermetic container, and lubricating the bearing portion and the like in the hermetic container. Lubricating oil is stored for this.
【０００３】[0003]
【発明が解決しようとする課題】このような圧縮機を備
えた冷凍サイクルでは、気温が高いとき、多量の缶入り
商品を収納したときのように熱的負荷が大きい場合、圧
縮器本体の吐出圧力が高くなる。このため、冷媒を余計
に圧縮しなければならなくなり、効率が低下する。ま
た、電動機の巻線温度が高くなり、特性および寿命に悪
影響を与える。In a refrigeration cycle equipped with such a compressor, when the temperature is high and the thermal load is large, such as when a large number of canned products are stored, the discharge of the compressor body Increased pressure. Therefore, the refrigerant has to be compressed excessively, and the efficiency is reduced. In addition, the winding temperature of the electric motor becomes high, which adversely affects the characteristics and life.
【０００４】一方、自動販売機の冷凍サイクルに使用さ
れている冷媒は、潤滑油の温度が低いほどその潤滑油に
溶解する量が多くなるという特性がある。このため、気
温が低いときには、圧縮機の密閉容器内に溜められてい
る潤滑油の温度も低くなり、冷媒が密閉容器内の潤滑油
に多く溶解することとなる。この結果、冷凍サイクル中
を循環する冷媒量が少なくなり、冷却不足となって缶入
り飲料の冷却に長時間を要するという問題を生ずる。On the other hand, the refrigerant used in the refrigerating cycle of the vending machine has a characteristic that the lower the temperature of the lubricating oil, the larger the amount of the refrigerant dissolved in the lubricating oil. For this reason, when the air temperature is low, the temperature of the lubricating oil stored in the closed container of the compressor also becomes low, and the refrigerant is largely dissolved in the lubricating oil in the closed container. As a result, the amount of the refrigerant circulated in the refrigeration cycle is reduced, resulting in insufficient cooling, which causes a problem that it takes a long time to cool the canned beverage.
【０００５】本発明は上記の事情に鑑みてなされたもの
で、その目的は、気温が高いとき、多量の缶入り商品を
収納したときのように熱的負荷が大きい場合、圧縮機本
体の吐出圧力を低下させると共に電動機の巻線温度を低
下させることができ、また気温が低いときには、密閉容
器内の潤滑油を加熱して該潤滑油に溶解する冷媒量を少
なくし、冷凍サイクル中を循環する冷媒量を多くするこ
とができる冷凍サイクルを提供するにある。The present invention has been made in view of the above circumstances, and its object is to discharge the compressor body when the temperature is high and the thermal load is large, such as when a large number of canned products are stored. The pressure can be reduced and the winding temperature of the electric motor can be reduced, and when the temperature is low, the lubricating oil in the closed container is heated to reduce the amount of refrigerant dissolved in the lubricating oil and circulate in the refrigeration cycle. It is to provide a refrigeration cycle capable of increasing the amount of refrigerant to be used.
【０００６】[0006]
【課題を解決するための手段】本発明は上記の目的を達
成するために、密閉容器内に圧縮機本体及びこれを駆動
する電動機を収納してなる圧縮機に対し、凝縮器、絞り
装置、蒸発器を順に接続してなる冷凍サイクルにおい
て、一端側を前記圧縮機本体の吐出口に連通させると共
に他端側を前記密閉容器内或いは該密閉容器内に設けら
れた熱交換通路を介して前記凝縮器に連通させ途中に密
閉容器の外側に位置する放熱部を有した第１の通路と、
一端側を前記圧縮機本体の吐出口に連通させると共に他
端側を前記密閉容器内或いは前記熱交換通路を介して前
記凝縮器に連通させた第２の通路と、前記圧縮機本体の
吐出口から吐出される冷媒を前記第１の通路に流す場合
と前記第２の通路に流す場合とに切り換える切換装置と
を設けたことを特徴とするとするものである。In order to achieve the above-mentioned object, the present invention provides a compressor, a compressor, a throttle device, and a compressor having a compressor main body and an electric motor for driving the compressor main body in a closed container. In a refrigerating cycle in which evaporators are sequentially connected, one end side is communicated with the discharge port of the compressor main body and the other end side is in the closed container or through a heat exchange passage provided in the closed container. A first passage having a heat radiating portion which is communicated with the condenser and is located outside the closed container on the way;
A second passage having one end communicating with the discharge port of the compressor body and the other end communicating with the condenser in the closed container or through the heat exchange passage, and the discharge port of the compressor body. It is characterized in that a switching device for switching between a case of flowing the refrigerant discharged from the first passage to the first passage and a case of flowing the refrigerant to the second passage is provided.
【０００７】[0007]
【作用】熱的負荷が大きい場合や気温が高い場合、圧縮
機本体の吐出口に対し、第１の通路を接続した状態にす
る。すると、圧縮機本体から吐出された冷媒は、第１の
通路に流入し、その放熱部にて放熱する。放熱後の冷媒
は圧縮機の密閉容器内、或いは密閉容器内の熱交換通路
に流入し、密閉容器内を冷却する。このため、圧縮機本
体に吸入される冷媒の温度が低下して吐出圧力が低下す
ると共に、電動機の巻線も冷やされる。When the thermal load is large or the temperature is high, the first passage is connected to the discharge port of the compressor body. Then, the refrigerant discharged from the compressor body flows into the first passage and radiates heat in the heat radiating portion. The heat-dissipated refrigerant flows into the airtight container of the compressor or a heat exchange passage in the airtight container to cool the airtight container. Therefore, the temperature of the refrigerant sucked into the compressor body is lowered, the discharge pressure is lowered, and the winding of the electric motor is cooled.
【０００８】気温が低い場合、圧縮機本体の吐出口に対
し、第２の通路を接続した状態にする。すると、圧縮機
本体から吐出された冷媒は、第２の通路に流入し、その
まま圧縮機の密閉容器内、或いは密閉容器内の熱交換通
路に流入する。このため、密閉容器内の潤滑油が加熱さ
れ、その中に溶解している冷媒が抜け出る。この結果、
冷凍サイクル中を循環する冷媒量が増加する。When the temperature is low, the second passage is connected to the discharge port of the compressor body. Then, the refrigerant discharged from the compressor body flows into the second passage and then directly into the closed container of the compressor or the heat exchange passage in the closed container. Therefore, the lubricating oil in the closed container is heated, and the refrigerant dissolved therein escapes. As a result,
The amount of refrigerant circulating in the refrigeration cycle increases.
【０００９】[0009]
【実施例】以下、本発明の一実施例を自動販売機の冷凍
サイクルに適用して図１を参照しながら説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG. 1 by applying it to a refrigerating cycle of a vending machine.
【００１０】この冷凍サイクルの圧縮機１は密閉形のも
ので、これは周知のように、密閉容器２内には、例えば
レシプロ式或いはロータリ式の圧縮機本体３及びこの圧
縮機本体３内の図示しないピストン或いはロータを駆動
する電動機４が配設されている。また、密閉容器２内に
は、軸受部分を潤滑するための潤滑油Ａが貯留されてい
る。The compressor 1 of this refrigeration cycle is of a hermetic type, and as is well known, this is, for example, a reciprocating type or rotary type compressor main body 3 in the closed container 2 and the inside of the compressor main body 3. An electric motor 4 for driving a piston or a rotor (not shown) is provided. Lubricating oil A for lubricating the bearing portion is stored in the closed container 2.
【００１１】上記圧縮機１において、その圧縮機本体３
の吐出口３ａには吐出パイプ５が接続されており、この
吐出パイプ５の先端は密閉容器２の外側に導出され、切
換装置としての電磁弁６の入口に接続されている。この
電磁弁６は２個の出口を有しており、断電状態では入口
を一方の出口に連通させ、通電されると入口を他方の出
口に連通させるように切り換わる。In the compressor 1, the compressor main body 3
A discharge pipe 5 is connected to the discharge port 3a, and the tip of the discharge pipe 5 is led to the outside of the closed container 2 and connected to the inlet of a solenoid valve 6 as a switching device. The solenoid valve 6 has two outlets. When the power is cut off, the inlet is connected to one outlet, and when energized, the inlet is connected to the other outlet.
【００１２】上記電磁弁６の一方の出口は第１の通路を
構成する冷却パイプ７に接続されている。この冷却パイ
プ７の途中部分には、蛇行状に曲げられた放熱部８が形
成されている。そして、この放熱部８はファン装置９に
より冷却されるようになっている。One outlet of the solenoid valve 6 is connected to a cooling pipe 7 which constitutes a first passage. A radiating portion 8 bent in a meandering shape is formed in the middle of the cooling pipe 7. The heat dissipation portion 8 is cooled by the fan device 9.
【００１３】また、電磁弁６の他方の出口は第２の通路
を構成する加熱パイプ１０に接続されており、この加熱
パイプ１０及び冷却パイプ７の先端部は一本化されて密
閉容器２に取り付けられ、該密閉容器２内に開口してい
る。The other outlet of the solenoid valve 6 is connected to a heating pipe 10 which constitutes a second passage, and the heating pipe 10 and the cooling pipe 7 are integrated at their tips into a closed container 2. It is attached and opens in the closed container 2.
【００１４】しかして、上記電磁弁６は例えば気温に応
じて通断電制御されるようになっている。すなわち、図
示はしないが、本実施例の自動販売機は、気温を検出す
る温度センサを有しており、その温度センサの検出信号
は自動販売機全体の制御を行うマイクロコンピュータに
入力される。そして、マイクロコンピュータは気温が所
定温度以上のとき、電磁弁６を断電し（圧縮機本体３の
吐出口を冷却パイプ７に連通させる状態）、気温が所定
温度以上になると、電磁弁６に通電する（圧縮機本体３
の吐出口３ａを冷却パイプ７に連通させる状態）ように
なっている。However, the solenoid valve 6 is designed to be switched on and off in accordance with the temperature, for example. That is, although not shown, the vending machine of the present embodiment has a temperature sensor that detects the temperature, and the detection signal of the temperature sensor is input to a microcomputer that controls the entire vending machine. Then, the microcomputer turns off the electromagnetic valve 6 when the temperature is equal to or higher than a predetermined temperature (a state in which the discharge port of the compressor body 3 is communicated with the cooling pipe 7). Energize (compressor body 3
The discharge port 3a is communicated with the cooling pipe 7).
【００１５】さて、圧縮機１の密閉容器２には、出口パ
イプ１１がその開口端を該密閉容器２内に開放した状態
で取り付けられており、この出口パイプ１１は凝縮器１
２に連なっている。この凝縮器１２は金属管を蛇行状に
曲げて構成されたもので、この凝縮器１２は前記冷却パ
イプ７の放熱部８と同様にファン装置９により冷却され
るようになっている。An outlet pipe 11 is attached to the airtight container 2 of the compressor 1 in a state where its open end is opened inside the airtight container 2, and the outlet pipe 11 is attached to the condenser 1.
Two in a row. The condenser 12 is formed by bending a metal tube in a meandering shape, and the condenser 12 is cooled by a fan device 9 like the heat radiating portion 8 of the cooling pipe 7.
【００１６】上記凝縮器１２の出口側は二分岐されてお
り、一方の分岐パイプ１３は電磁弁１４及び絞り装置た
る第１のキャピラリチューブ１５、第１の蒸発器１６、
第２の蒸発器１７を順に直列に介して吸入パイプ１８に
接続されている。そして、吸入パイプ１８の先端は圧縮
機本体３の吸入口３ｂに接続されている。The outlet side of the condenser 12 is bifurcated, and one branch pipe 13 has a solenoid valve 14 and a first capillary tube 15, which is a throttle device, a first evaporator 16,
The second evaporator 17 is sequentially connected in series to the suction pipe 18. The tip of the suction pipe 18 is connected to the suction port 3b of the compressor body 3.
【００１７】また、凝縮器１２の出口側における他方の
分岐パイプ１９は冷媒を第１の蒸発器１６を迂回して第
２の蒸発器１７に供給するためのもので、電磁弁２０及
び絞り装置たる第２のキャピラリチューブ２１を介して
第２の蒸発器１７に接続されている。The other branch pipe 19 on the outlet side of the condenser 12 serves to bypass the first evaporator 16 and supply the refrigerant to the second evaporator 17, and the solenoid valve 20 and the expansion device. It is connected to the second evaporator 17 through the barrel second capillary tube 21.
【００１８】次に上記構成の作用を説明する。Next, the operation of the above configuration will be described.
【００１９】今、気温が所定温度以上にあるとする。こ
のとき、電磁弁６は断電状態にあって圧縮機本体３の吐
出口３ａを冷却パイプ７に連通させている。It is now assumed that the air temperature is above a predetermined temperature. At this time, the solenoid valve 6 is in a disconnected state, and the discharge port 3a of the compressor body 3 is in communication with the cooling pipe 7.
【００２０】この状態で、圧縮機１の電動機４が通電さ
れ圧縮機本体３が起動すると、圧縮機本体３により圧縮
された高温高圧のガス冷媒が冷却パイプ７に流入する。In this state, when the electric motor 4 of the compressor 1 is energized and the compressor body 3 is started, the high-temperature and high-pressure gas refrigerant compressed by the compressor body 3 flows into the cooling pipe 7.
【００２１】冷却パイプ７に流入したガス冷媒は放熱部
８においてファン装置９から送られる風により冷却さ
れ、その後、密閉容器２内に流入する。この密閉容器２
内に流入したガス冷媒は放熱部８での放熱により冷却さ
れた状態となっているから、密閉容器２内、ひいては圧
縮機本体３を冷却することとなり、これにより圧縮機本
体３からのガス冷媒の吐出圧力が低下することとなる。
また、電動機４の巻線も放熱部８において冷却されたガ
ス冷媒により冷却されることとなり、その温度は低下す
る。The gas refrigerant flowing into the cooling pipe 7 is cooled by the wind sent from the fan unit 9 in the heat radiating section 8, and then flows into the closed container 2. This closed container 2
Since the gas refrigerant flowing into the inside is cooled by the heat dissipation in the heat dissipation part 8, the inside of the hermetically sealed container 2 and hence the compressor body 3 is cooled, whereby the gas refrigerant from the compressor body 3 is cooled. The discharge pressure of is decreased.
Further, the winding of the electric motor 4 is also cooled by the gas refrigerant cooled in the heat radiating portion 8, and the temperature thereof is lowered.
【００２２】そして、密閉容器２内に流入して圧縮機本
体３を冷却した冷媒は、その後、出口パイプ１１に流入
し、凝縮器１２で凝縮される。凝縮された冷媒は、電磁
弁１４が開、電磁弁２０が閉じているものとすると、第
１のキャピラリチューブ１５を通って第１及び第２の蒸
発器１６及び１７に供給され、この両蒸発器１６，１７
で蒸発して冷却作用を呈し、再び圧縮器本体３に吸入さ
れて圧縮される、というように循環する。The refrigerant that has flowed into the closed container 2 to cool the compressor body 3 then flows into the outlet pipe 11 and is condensed in the condenser 12. The condensed refrigerant is supplied to the first and second evaporators 16 and 17 through the first capillary tube 15, assuming that the electromagnetic valve 14 is open and the electromagnetic valve 20 is closed. Bowl 16, 17
It evaporates and exhibits a cooling effect, and is sucked into the compressor body 3 again and compressed, and so on.
【００２３】なお、電磁弁１４が閉じ、電磁弁２０が開
いた状態では、凝縮された冷媒は第２のキャピラリチュ
ーブ２１を通って第２の蒸発器１７のみに供給される。When the solenoid valve 14 is closed and the solenoid valve 20 is opened, the condensed refrigerant is supplied only to the second evaporator 17 through the second capillary tube 21.
【００２４】また、気温が所定温度以下になると、電磁
弁６は通電されて圧縮機本体３の吐出口３ａを加熱パイ
プ１０に連通させる。When the temperature falls below a predetermined temperature, the solenoid valve 6 is energized to connect the discharge port 3a of the compressor body 3 to the heating pipe 10.
【００２５】すると、圧縮機本体３により圧縮された高
温高圧のガス冷媒が加熱パイプ１０に流入する。加熱パ
イプ１０に流入した冷媒は強制冷却されることなく、そ
のまま密閉容器２内に流入する。このため、密閉容器２
内に流入したガス冷媒は密閉容器２内に溜められている
潤滑油Ａを加熱することとなり、これにより潤滑油Ａへ
の冷媒の溶解量が減少し、その結果、冷凍サイクル中を
循環する冷媒量が増加する。従って、蒸発器１６，１７
に十分なる液冷媒を供給でき、低気温時の冷却不足の問
題を解消できる。Then, the high temperature and high pressure gas refrigerant compressed by the compressor body 3 flows into the heating pipe 10. The refrigerant flowing into the heating pipe 10 flows into the closed container 2 as it is without being forcibly cooled. Therefore, the closed container 2
The gas refrigerant flowing into the inside heats the lubricating oil A stored in the closed container 2, thereby reducing the amount of the refrigerant dissolved in the lubricating oil A, and as a result, the refrigerant circulating in the refrigeration cycle. The amount increases. Therefore, the evaporators 16 and 17
Sufficient liquid refrigerant can be supplied to solve the problem of insufficient cooling at low temperatures.
【００２６】なお、上記実施例では、気温が所定温度以
上のとき圧縮機本体３の吐出口３ａを冷却パイプ７に連
通させるようにしたが、これは冷凍サイクルの熱的負荷
が大きい場合においても、吐出口３ａを冷却パイプ７に
連通させるように構成しても良い。冷凍サイクルの熱的
負荷の大小は例えば冷却器の入口側と出口側との温度差
等によって、或いは圧縮機本体３の吐出側と吸入側との
圧力差等によって検出することができる。In the above embodiment, the discharge port 3a of the compressor body 3 is communicated with the cooling pipe 7 when the air temperature is higher than the predetermined temperature, but this is also applicable when the thermal load of the refrigeration cycle is large. The discharge port 3a may be connected to the cooling pipe 7. The magnitude of the thermal load of the refrigeration cycle can be detected by, for example, the temperature difference between the inlet side and the outlet side of the cooler or the pressure difference between the discharge side and the suction side of the compressor body 3.
【００２７】図２は本発明の他の実施例を示すもので、
図１に示す一実施例との相違は、密閉容器２内に熱交換
通路たる蛇行状の熱交換パイプ２２を設け、この熱交換
パイプ２２の一端側に冷却パイプ７及び加熱パイプ１０
の出口側を接続し、熱交換パイプ２２の他端側を出口パ
イプ１１に接続する構成としたところにある。FIG. 2 shows another embodiment of the present invention.
The difference from the embodiment shown in FIG. 1 is that a meandering heat exchange pipe 22 as a heat exchange passage is provided in the closed container 2, and the cooling pipe 7 and the heating pipe 10 are provided at one end side of the heat exchange pipe 22.
The outlet side is connected, and the other end side of the heat exchange pipe 22 is connected to the outlet pipe 11.
【００２８】この構成によれば、圧縮機本体３の吐出口
３ａから吐出されたガス冷媒は、冷却パイプ７或いは加
熱パイプ１０を流通した後、熱交換パイプ２２内に流入
し、ここで密閉容器２内を冷却或いは加熱し、そして出
口パイプ１１を経て凝縮器１２へと流れるので、前記一
実施例と同様の効果を得ることができる。According to this structure, the gas refrigerant discharged from the discharge port 3a of the compressor body 3 flows through the cooling pipe 7 or the heating pipe 10 and then flows into the heat exchange pipe 22 where the hermetic container is closed. Since the inside of 2 is cooled or heated and then flows through the outlet pipe 11 to the condenser 12, the same effect as that of the above-mentioned one embodiment can be obtained.
【００２９】なお、本発明は上記し且つ図面に示す実施
例に限定されるものではなく、例えば自動販売機の冷凍
サイクルばかりでなく、冷蔵庫の冷凍サイクルなどに適
用しても良い等、要旨を逸脱しない範囲で種々変更して
実施できるものである。The present invention is not limited to the embodiments described above and shown in the drawings. For example, the present invention may be applied not only to a refrigeration cycle of a vending machine but also to a refrigeration cycle of a refrigerator. Various modifications can be made without departing from the scope.
【００３０】[0030]
【発明の効果】以上説明したように本発明は、気温が高
いとき、或いは熱的負荷が大きい場合、圧縮機本体の吐
出圧力を低下させると共に電動機の巻線温度を低下させ
ることができ、また気温が低いときには、密閉容器内の
潤滑油を加熱して該潤滑油に溶解する冷媒量を少なく
し、冷凍サイクル中を循環する冷媒量を多くすることが
できるという優れた効果を奏するものである。As described above, the present invention can reduce the discharge pressure of the compressor body and the winding temperature of the electric motor when the temperature is high or the thermal load is large, and When the temperature is low, the lubricating oil in the closed container is heated to reduce the amount of the refrigerant dissolved in the lubricating oil, and the amount of the refrigerant circulating in the refrigeration cycle can be increased, which is an excellent effect. ..
【図１】本発明の一実施例を示す冷凍サイクル構成図FIG. 1 is a refrigeration cycle configuration diagram showing an embodiment of the present invention.
【図２】本発明の他の実施例を示す冷凍サイクル構成図FIG. 2 is a refrigeration cycle configuration diagram showing another embodiment of the present invention.
１は圧縮機、２は密閉容器、３は圧縮機本体、４は電動
機、６は電磁弁（切換装置）、７は冷却パイプ（第１の
通路）、８は放熱部、１０は加熱パイプ（第２の通
路）、１２は凝縮器、１５は第１のキャピラリチューブ
（絞り装置）、１６，１７は第１，第２の蒸発器、２０
は第２のキャピラリチューブ（絞り装置）、２２は熱交
換パイプ（熱交換通路）である。1 is a compressor, 2 is a closed container, 3 is a compressor body, 4 is an electric motor, 6 is an electromagnetic valve (switching device), 7 is a cooling pipe (first passage), 8 is a heat radiating portion, and 10 is a heating pipe ( (Second passage), 12 is a condenser, 15 is a first capillary tube (throttle device), 16 and 17 are first and second evaporators, 20
Is a second capillary tube (throttle device), and 22 is a heat exchange pipe (heat exchange passage).
Claims (1)
する電動機を収納してなる圧縮機に対し、凝縮器、絞り
装置、蒸発器を順に接続してなる冷凍サイクルにおい
て、一端側を前記圧縮機本体の吐出口に連通させると共
に他端側を前記密閉容器内或いは該密閉容器内に設けら
れた熱交換通路を介して前記凝縮器に連通させ途中に密
閉容器の外側に位置する放熱部を有した第１の通路と、
一端側を前記圧縮機本体の吐出口に連通させると共に他
端側を前記密閉容器内或いは前記熱交換通路を介して前
記凝縮器に連通させた第２の通路と、前記圧縮機本体の
吐出口から吐出される冷媒を前記第１の通路に流す場合
と前記第２の通路に流す場合とに切り換える切換装置と
を設けたことを特徴とする冷凍サイクル。1. A refrigeration cycle in which a condenser, a throttle device, and an evaporator are sequentially connected to a compressor in which a compressor body and an electric motor for driving the compressor body are housed in a hermetically sealed container A heat radiating section that is in communication with the discharge port of the compressor body and has the other end in communication with the condenser through the heat exchange passage provided in the closed container or in the closed container and located outside the closed container on the way. A first passage having
A second passage having one end communicating with the discharge port of the compressor body and the other end communicating with the condenser in the closed container or through the heat exchange passage, and the discharge port of the compressor body. A refrigeration cycle provided with a switching device for switching between a case of flowing the refrigerant discharged from the first passage and a case of flowing the refrigerant into the second passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34279591A JPH05172409A (en) | 1991-12-25 | 1991-12-25 | Refrigerating cycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34279591A JPH05172409A (en) | 1991-12-25 | 1991-12-25 | Refrigerating cycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05172409A true JPH05172409A (en) | 1993-07-09 |
Family
ID=18356559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34279591A Pending JPH05172409A (en) | 1991-12-25 | 1991-12-25 | Refrigerating cycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05172409A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009293905A (en) * | 2008-06-09 | 2009-12-17 | Daikin Ind Ltd | Refrigerating device |
| JP2012026725A (en) * | 2011-11-11 | 2012-02-09 | Mitsubishi Electric Corp | Air conditioner |
| US9528733B2 (en) | 2009-11-11 | 2016-12-27 | Mitsubishi Electric Corporation | Air-conditioning apparatus |
| CN114353360A (en) * | 2022-01-06 | 2022-04-15 | 青岛海尔空调电子有限公司 | Double-compressor refrigerant circulating system and control method thereof |
-
1991
- 1991-12-25 JP JP34279591A patent/JPH05172409A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009293905A (en) * | 2008-06-09 | 2009-12-17 | Daikin Ind Ltd | Refrigerating device |
| US9528733B2 (en) | 2009-11-11 | 2016-12-27 | Mitsubishi Electric Corporation | Air-conditioning apparatus |
| JP2012026725A (en) * | 2011-11-11 | 2012-02-09 | Mitsubishi Electric Corp | Air conditioner |
| CN114353360A (en) * | 2022-01-06 | 2022-04-15 | 青岛海尔空调电子有限公司 | Double-compressor refrigerant circulating system and control method thereof |
| CN114353360B (en) * | 2022-01-06 | 2024-02-23 | 青岛海尔空调电子有限公司 | Dual compressor refrigerant cycle system and control method thereof |
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