JPH1163707A - Air conditioner cycle - Google Patents
Air conditioner cycleInfo
- Publication number
- JPH1163707A JPH1163707A JP24214597A JP24214597A JPH1163707A JP H1163707 A JPH1163707 A JP H1163707A JP 24214597 A JP24214597 A JP 24214597A JP 24214597 A JP24214597 A JP 24214597A JP H1163707 A JPH1163707 A JP H1163707A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- compressor
- expander
- evaporator
- pressure
- 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
Links
Landscapes
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、車両等に用いら
れるエアコンサイクルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner cycle used for a vehicle or the like.
【０００２】[0002]
【従来の技術】冷媒を昇圧する圧縮機、この昇圧された
冷媒を液化する凝縮器、液化された冷媒を減圧する膨張
弁、及びこの減圧された冷媒を気化する蒸発器を含むエ
アコンサイクルは、多用されている周知な構成である
が、このような構成においては、膨張弁で冷媒が膨張す
る際のエネルギーを回収することなく無駄に捨てていた
ので、サイクルとしては効率が悪いという欠点がある。2. Description of the Related Art An air conditioner cycle including a compressor for increasing the pressure of a refrigerant, a condenser for liquefying the increased pressure of the refrigerant, an expansion valve for reducing the pressure of the liquefied refrigerant, and an evaporator for evaporating the reduced pressure of the refrigerant, comprises: Although it is a well-known configuration that is frequently used, such a configuration has a drawback that the cycle is inefficient because the energy when the refrigerant expands at the expansion valve is wasted and wasted without being recovered. .
【０００３】そこで、従来においては、特開平６１−４
９９６８号公報に示されるように、膨張弁１１の下流側
に気液分離器１２を設けて膨張弁１１を通過した冷媒を
蒸気と液体とに分離し、分離された蒸気を膨張機１４、
低圧凝縮器１８、ポンプ２０を経て前記気液分離器１２
で分離された液体と混合し、しかる後にこの混合された
冷媒を減圧弁１６を介して蒸発器１へ送るようなサイク
ルを構成し、駆動機１５Ａに直結される圧縮機５と前記
膨張機１４とを同軸上に配設して膨張機１４で得られる
動力を圧縮機５の駆動動力の一部に用い、膨張時のエネ
ルギーを有効に回収することが考えられている。Therefore, conventionally, Japanese Patent Application Laid-Open No. 61-4 / 1994
As shown in Japanese Patent No. 9968, a gas-liquid separator 12 is provided downstream of the expansion valve 11 to separate the refrigerant that has passed through the expansion valve 11 into steam and liquid, and the separated steam is used as an expander 14,
The gas-liquid separator 12 passes through a low-pressure condenser 18 and a pump 20.
And a cycle in which the mixed refrigerant is sent to the evaporator 1 via the pressure reducing valve 16. The compressor 5 and the expander 14 are connected directly to the driving device 15A. It is conceived that the power generated by the expander 14 is disposed coaxially and the power obtained by the expander 14 is used as a part of the driving power of the compressor 5 to effectively recover the energy at the time of expansion.
【０００４】また、特開昭６１−９６３７０号公報や特
開平４−３４００６２号公報においては、冷媒を減圧す
る機構として膨張機を用い、主圧縮機とは別に補助圧縮
機を膨張機と同軸上に設け、膨張機で回収されるエネル
ギーを補助圧縮機での冷媒の圧縮に利用できるように
し、前者（特開昭６１−９６３７０号公報）においては
補助圧縮機を主圧縮機に対して直列に、後者（特開平４
−３４００６２号公報）においては並列にそれぞれ設け
るようにした点が開示されている。In Japanese Patent Application Laid-Open Nos. 61-96370 and 4-340062, an expander is used as a mechanism for reducing the pressure of a refrigerant, and an auxiliary compressor is provided coaxially with the expander separately from the main compressor. And the energy recovered by the expander is used for compressing the refrigerant in the auxiliary compressor. In the former (Japanese Patent Laid-Open No. 61-96370), the auxiliary compressor is connected in series with the main compressor. , The latter (Japanese Unexamined Patent Publication No.
Japanese Patent Application Laid-Open No. 340062) discloses that they are provided in parallel.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、特開平
６１−４９９６８号公報に示されるように、駆動機に直
結された圧縮機を膨張機と同軸上に配設する構成におい
ては、駆動機、圧縮機、及び膨張機を同軸方向にレイア
ウトする必要があり、特に車両のエンジンルームのよう
に狭いスペースにおいては、駆動機に対して軸方向にレ
イアウトできるだけのスペースを確保することは困難で
あり、仮に可能であるとしても、限られた取付け箇所で
の敷設となり、レイアウトの自由度は著しく制限された
ものとなる。However, as disclosed in Japanese Patent Application Laid-Open No. 61-49968, in a configuration in which a compressor directly connected to a drive unit is disposed coaxially with an expander, the drive unit and the compression unit are not provided. It is necessary to lay out the engine and the expander in the coaxial direction, and especially in a narrow space such as the engine room of a vehicle, it is difficult to secure a space that can be laid out in the axial direction with respect to the driving machine. Even if it is possible, the layout is limited to a limited number of places, and the degree of freedom in layout is significantly limited.
【０００６】また、特開昭６１−９６３７０号公報や特
開平４−３４００６２号公報に用いられる補助圧縮機
は、稼動しなければ冷媒が流通しない構成であることか
ら、前者（特開昭６１−９６３７０号公報）においては
主圧縮機と同一容量が得られるように稼動する必要があ
り、補助圧縮機を主圧縮機に合わせて駆動させるだけの
動力が回収されない場合にはサイクルの効率が低下する
不都合がある。かかる不都合は後者（特開平４−３４０
０６２号公報）の構成によれば解消されるものである
が、補助圧縮機を主圧縮機に対して併設したのでは、主
経路しか持たない既存のサイクルに対してバイパス経路
を新設しなければならず、変更が大きくなると共に、配
管の敷設スペースを新たに確保する必要がある等、既存
のサイクルに対応しにくい欠点がある。The auxiliary compressor used in JP-A-61-96370 and JP-A-4-340062 has a configuration in which the refrigerant does not flow unless it is operated. No. 96370), it is necessary to operate so as to obtain the same capacity as the main compressor. If the power for driving the auxiliary compressor in accordance with the main compressor is not recovered, the efficiency of the cycle is reduced. There are inconveniences. Such inconvenience is the latter (Japanese Patent Laid-Open No. 4-340).
However, if the auxiliary compressor is provided alongside the main compressor, a new bypass path must be provided for an existing cycle having only the main path. However, there are drawbacks in that it is difficult to cope with the existing cycle, for example, the change is large and it is necessary to newly secure a space for laying pipes.
【０００７】そこで、この発明においては、冷媒膨張時
のエネルギーを回収してサイクルの効率を高め、膨張機
と圧縮機とを同軸上に配設する構成を避けてレイアウト
の自由度を確保し、狭いスペースにも敷設することがで
きるエアコンサイクルを提供することを課題としてい
る。また、サイクルの効率の向上を図り、既存のサイク
ルに大きな変更を加えずに僅かな変更によって本構成の
サイクルを構成でき、既設のサイクルにも対応すること
ができるエアコンサイクルを提供することを課題として
いる。Therefore, in the present invention, the efficiency of the cycle is enhanced by recovering the energy at the time of refrigerant expansion, and the freedom of layout is ensured by avoiding the configuration in which the expander and the compressor are arranged coaxially. It is an object of the present invention to provide an air conditioner cycle that can be laid in a narrow space. Another object of the present invention is to provide an air conditioner cycle that can improve the cycle efficiency, configure the cycle of the present configuration with small changes without making significant changes to the existing cycle, and can also respond to the existing cycle. And
【０００８】[0008]
【課題を解決するための手段】上記課題を達成するため
に、この発明にかかるエアコンサイクルは、冷媒を昇圧
する圧縮機と、この圧縮機で昇圧された冷媒が流入され
て放熱する凝縮器と、この凝縮器よりも冷媒下流側に配
されて冷媒を減圧する膨張機と、この膨張機で減圧され
た冷媒が流入されて吸熱する蒸発器と、前記蒸発器と圧
縮機との間に配されて前記冷媒を昇圧する過給機とを有
し、前記膨張機と過給機とを同軸上に配設したことを特
徴としている（請求項１）。In order to achieve the above object, an air conditioner cycle according to the present invention comprises a compressor for increasing the pressure of a refrigerant, and a condenser for flowing the refrigerant, which has been increased in pressure by the compressor, and radiating heat. An expander arranged downstream of the condenser to reduce the pressure of the refrigerant, an evaporator into which the refrigerant decompressed by the expander flows and absorbs heat, and an evaporator disposed between the evaporator and the compressor. And a supercharger for increasing the pressure of the refrigerant, wherein the expander and the supercharger are disposed coaxially (claim 1).
【０００９】即ち、エアコンサイクルは、圧縮機、凝縮
器、膨張機、蒸発器、過給機を含むようにこの順で直列
に接続して構成され、膨張機と過給機とを同軸上に配設
することで冷媒が減圧膨張する際のエネルギーを回収で
きる構成となっており、圧縮機で圧縮された冷媒は、凝
縮器で液化された後に膨張機で減圧膨張され、この膨張
時に生じるエネルギーによって膨張機と同軸上に配設さ
れた過給機を稼動する。そして、蒸発器に流入した冷媒
は、ここで蒸発された後に過給機に入り、この過給機に
よって幾分昇圧されて圧縮機へ戻される。That is, an air conditioner cycle is configured by connecting a compressor, a condenser, an expander, an evaporator, and a supercharger in series in this order, and includes an expander and a supercharger coaxially. By arranging the refrigerant, it is possible to recover energy when the refrigerant is decompressed and expanded, and the refrigerant compressed by the compressor is liquefied by the condenser and then decompressed and expanded by the expander. The supercharger arranged coaxially with the expander is operated. Then, the refrigerant that has flowed into the evaporator enters the supercharger after being evaporated here, and is somewhat pressurized by the supercharger and returned to the compressor.
【００１０】よって、膨張機で冷媒が減圧膨張する際に
取り出される動力をもって冷媒を過給機で昇圧すること
ができるので、膨張時のエネルギーを部分的に回収する
ことができ、また、過給機によって冷媒の昇圧を助ける
ので、圧縮機の必要動力を低減することができる。Accordingly, the refrigerant can be boosted in pressure by the supercharger with the power taken out when the refrigerant is decompressed and expanded by the expander, so that the energy at the time of expansion can be partially recovered, and Since the compressor assists in increasing the pressure of the refrigerant, the required power of the compressor can be reduced.
【００１１】上述の構成は、従来の膨張弁に代えて過給
機と連動する膨張機によって代用する構成であるが、過
熱度制御を必要とするサイクルにあっては、蒸発器に関
する温度に応じて開度が調節される膨張弁を凝縮器と膨
張機との間に設けるとよい（請求項２）。また、このよ
うな構成は、限られたスペースでレイアウトする必要が
ある例えば車両において、蒸発器を車室側に配し、残り
をエンジンルーム側に配するような場合に有効な構成と
なる（請求項３）。The above-described configuration is a configuration in which a conventional expansion valve is replaced with an expansion device that works in conjunction with a supercharger. However, in a cycle that requires superheat control, the temperature depends on the temperature of the evaporator. It is preferable to provide an expansion valve whose opening degree is adjusted between the condenser and the expander (claim 2). Further, such a configuration is effective when, for example, in a vehicle that needs to be laid out in a limited space, the evaporator is disposed on the vehicle compartment side and the rest is disposed on the engine room side ( Claim 3).
【００１２】車両の場合には、圧縮機の駆動源はエンジ
ン又はモータであるが、エンジンルームのような制限さ
れた空間では、駆動源の軸上に圧縮機だけでなく膨張機
をも配置するレイアウトは採りにくいものである。しか
しながら、本発明においては、圧縮機とは無関係に膨張
機や過給機を稼動できる構成となっているので、これら
膨張機や過給機を圧縮機の位置を考慮することなくレイ
アウトすることが可能となる。また、膨張機や過給機
は、既設の配管途中に設ければよく、新たに配管を設け
る必要もない。In the case of a vehicle, the drive source of the compressor is an engine or a motor, but in a limited space such as an engine room, not only the compressor but also the expander is arranged on the shaft of the drive source. The layout is difficult to take. However, in the present invention, since the expansion device and the supercharger can be operated independently of the compressor, the expansion device and the supercharger can be laid out without considering the position of the compressor. It becomes possible. Further, the expander and the supercharger may be provided in the middle of the existing pipe, and it is not necessary to newly provide a pipe.
【００１３】膨張機と過給機とが同軸上に配置されるこ
とから、これらをできるだけ近接して設けることが省ス
ペースを図る上では好ましく、車両への配置を考えた場
合には、蒸発器からエンジンルーム側に引き出される配
管は近接しているのが通常であるから、例えば、車室と
エンジンルームとを仕切る仕切壁の近傍に配置する構成
等が考えられる。Since the expander and the supercharger are disposed coaxially, it is preferable to provide them as close as possible in order to save space. In consideration of the arrangement in a vehicle, the evaporator is preferably used. Since the pipe drawn from the engine room to the engine room side is usually close to the engine room, for example, a configuration in which the pipe is arranged near a partition wall that separates the vehicle room from the engine room can be considered.
【００１４】[0014]
【発明の実施の形態】以下、この発明の構成例を図面に
より説明する。図１において、車両１に搭載されるエア
コンサイクル２の第１の構成例が示され、このエアコン
サイクル２は、冷媒を圧縮する圧縮機３、この圧縮機３
で圧縮された冷媒を放熱液化する凝縮器４、凝縮器４の
冷媒下流側に配された膨張機５、膨張機５で減圧された
冷媒を蒸発気化する蒸発器６、蒸発器６の冷媒下流側に
配された過給機７、過給機７と圧縮機３との間に配され
たアキュムレータ８とをこの順で直列に配管接続して構
成されている。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 1 shows a first configuration example of an air conditioner cycle 2 mounted on a vehicle 1. The air conditioner cycle 2 includes a compressor 3 for compressing a refrigerant, a compressor 3
Condenser 4 for radiating and liquefying the refrigerant compressed by the compressor, an expander 5 disposed downstream of the condenser 4 for the refrigerant, an evaporator 6 for evaporating the refrigerant decompressed by the expander 5, and a refrigerant downstream of the evaporator 6 The supercharger 7 disposed on the side, and an accumulator 8 disposed between the supercharger 7 and the compressor 3 are connected in series in this order by piping.
【００１５】圧縮機３は、エンジン又はモータを駆動源
９として駆動するようになっており、膨張機５と過給機
７とは、同軸上に配置されて圧縮機３から独立したもの
となっており、それぞれの内部に図示しない羽根車を収
納し、これら羽根車を同一の軸１０に固装して同時に回
転できるようになっている。The compressor 3 is driven by an engine or a motor as a drive source 9. The expander 5 and the supercharger 7 are arranged coaxially and are independent of the compressor 3. Each of them accommodates impellers (not shown) therein, and these impellers are mounted on the same shaft 10 and can be rotated simultaneously.
【００１６】このエアコンサイクル２は、車両のエンジ
ンルーム１１と車室１２とを分ける仕切壁１３を境にし
て、エンジンルーム側に圧縮機３、凝縮器４、膨張機
５、過給機７、アキュムレータ８を配置し、車室側に蒸
発器６を配置する構成となっており、蒸発器６からエン
ジンルーム側に引き出される２つの配管１４ａ、１４ｂ
は仕切壁１３を貫通させる部分において近接しており、
膨張機５と過給機７とはこれに合わせて軸１０を短くし
て近接して設けられ、仕切壁近傍の余裕のあるスペース
に配置されている。The air conditioner cycle 2 includes a compressor 3, a condenser 4, an expander 5, a supercharger 7, a compressor 3, a condenser 4, an engine compartment 11 and a partition wall 13 separating the engine compartment 11 and the compartment 12. An accumulator 8 is arranged, and the evaporator 6 is arranged on the vehicle compartment side. Two pipes 14a, 14b drawn from the evaporator 6 to the engine room side
Are close to each other at a portion where the partition wall 13 penetrates,
The expander 5 and the supercharger 7 are provided in proximity to each other with the shaft 10 shortened in accordance with this, and are arranged in a marginal space near the partition wall.
【００１７】上記構成において、圧縮機３によって圧縮
された冷媒は、高温高圧のガス状冷媒として凝縮器４に
入り、ここで凝縮器４を通過する空気と熱交換して液化
する。この液状冷媒は、膨張機５に送られてここで一気
に減圧膨張されて低温低圧の湿り蒸気となり、その際に
生じるエネルギーによって膨張機５の羽根車を回転させ
る。この膨張機５を介して蒸発器６へ送られた冷媒は、
蒸発器６を通過する空気と熱交換してガス状冷媒とな
り、過給機７へ送られる。過給機７の羽根車は膨張機５
によって得られた動力によって回転していることから、
膨張機５で取り出されたエネルギーが過給機７において
冷媒を昇圧する仕事に変換され、冷媒は幾分昇圧した状
態でアキュムレータ８へ送られる。そして、このアキュ
ムレータ８において蒸発しきれなかった液状冷媒が分離
され、完全なガス状冷媒として圧縮機３へ戻され、再び
圧縮される。In the above configuration, the refrigerant compressed by the compressor 3 enters the condenser 4 as a high-temperature and high-pressure gaseous refrigerant, where it exchanges heat with the air passing through the condenser 4 and liquefies. This liquid refrigerant is sent to the expander 5 where it is decompressed and expanded at a stretch to become low-temperature and low-pressure wet steam, and the energy generated at that time rotates the impeller of the expander 5. The refrigerant sent to the evaporator 6 via the expander 5 is
Heat exchange with the air passing through the evaporator 6 becomes gaseous refrigerant, which is sent to the supercharger 7. The impeller of the supercharger 7 is the expander 5
Because it is rotated by the power obtained by
The energy extracted by the expander 5 is converted into the work of increasing the pressure of the refrigerant in the supercharger 7, and the refrigerant is sent to the accumulator 8 in a slightly increased pressure. The liquid refrigerant that has not completely evaporated in the accumulator 8 is separated, returned to the compressor 3 as a complete gaseous refrigerant, and compressed again.
【００１８】以上の過程を図２で示すモリエール線図を
用いつつ、膨張弁を用いた従来のエアコンサイクルと比
較しつつ説明すると、Ａ点で示される圧縮機で圧縮され
た高温高圧の冷媒は、凝縮器によって放熱液化されてＢ
点で示す液相となる。従来の膨張弁を用いたサイクルに
よれば、実線で示されるように、このＢ点からほぼ等エ
ンタルピー変化してＣ点で示す低圧低温の湿り蒸気とな
り、蒸発器で気化されてＤ点に至る。これに対して、上
記構成の膨張機５を用いる場合には、膨張機５において
形成されるエネルギーによって羽根車が回転されるの
で、この仕事に相当する分だけエンタルピーを小さくす
ることができ、破線で示されるように、Ｂ点からＣ’点
で示す低圧低温の湿り蒸気となる。The above process will be described with reference to a Moliere diagram shown in FIG. 2 and a comparison with a conventional air conditioner cycle using an expansion valve. As shown in FIG. Liquefied by the condenser, B
The liquid phase is indicated by the dots. According to the cycle using the conventional expansion valve, as shown by the solid line, almost equal enthalpy changes from this point B to low-pressure low-temperature wet steam shown at point C, which is vaporized by the evaporator and reaches point D. . On the other hand, when the expander 5 having the above configuration is used, the impeller is rotated by the energy generated in the expander 5, so that the enthalpy can be reduced by an amount corresponding to this work, and As shown by, a low-pressure and low-temperature wet steam indicated by points B to C ′ is obtained.
【００１９】また、圧縮機のみによって昇圧する従来の
サイクルによれば、蒸発器を通過した冷媒は、実線で示
されるように、配管での圧損等の影響から圧縮機の入口
においてＥ点で示すガス相となり、圧縮機で圧縮されて
再びＡ点で示す高温高圧の冷媒となる。これに対して、
膨張機５と連動する過給機７が設けられている本サイク
ルでは、蒸発器６の出口の状態が同じくＤ点であるとす
ると、破線で示されるように、Ｄ点から過給機７によっ
て幾分昇圧されてＦ点に至り、その後配管を通って圧縮
機へ至るので、配管での圧損等の影響によって圧縮機の
入口においてはＥ’点で示すガス相となる。Further, according to the conventional cycle in which the pressure is increased only by the compressor, the refrigerant that has passed through the evaporator is indicated by a point E at the inlet of the compressor due to the pressure loss in the piping as shown by the solid line. It becomes a gas phase, is compressed by the compressor, and becomes a high-temperature and high-pressure refrigerant again indicated by point A. On the contrary,
In this cycle in which the supercharger 7 interlocked with the expander 5 is provided, assuming that the state of the outlet of the evaporator 6 is also the point D, the supercharger 7 starts from the point D as shown by the broken line. The pressure is increased somewhat to reach the point F, and then reaches the compressor through the pipe. Therefore, the gas phase at the inlet of the compressor becomes a point E ′ due to the pressure loss in the pipe.
【００２０】したがって、本構成例においては、実線で
示す従来のサイクルに比べて、冷媒の膨張時におけるエ
ネルギー損失を減らして膨張機での状態変化を等エント
ロピー変化に近づけ、冷却能力をＣ点とＣ’点との間の
エンタルピー差（Δｉ）に相当する分（数％程度）だけ
増加させることができる。また、圧縮機３による昇圧も
過給機７による昇圧分（ΔＰ）だけ減らすことができ、
圧縮機３の仕事を低減することができ、効率のいいエア
コンサイクルを構成することができる。Therefore, in the present configuration example, as compared with the conventional cycle indicated by the solid line, the energy loss during the expansion of the refrigerant is reduced, the state change in the expander approaches the isentropic change, and the cooling capacity is reduced to the point C. It can be increased by an amount (about several%) corresponding to the enthalpy difference (Δi) with the point C ′. Further, the pressure increase by the compressor 3 can also be reduced by the pressure increase amount (ΔP) by the supercharger 7,
The work of the compressor 3 can be reduced, and an efficient air conditioner cycle can be configured.
【００２１】さらに、上述の構成によれば、膨張機５と
過給機７とを動力源９の位置とは関係なく配設すること
ができるので、膨張機５と過給機７とをエアコンサイク
ル２の動力源９の近くに配設する必要はなく、余裕のあ
るスペースを適宜選択して配設すればよく（上記構成例
では仕切壁１３の近傍に配設）、レイアウトの自由度を
大きくすることができる。しかも、膨張機５と過給機７
とは、これらを設けるために新たにバイパス経路等を設
ける必要はなく、既存のエアコンサイクルに対して蒸発
器６から引き出される配管の途中に付け加えるだけでよ
い。Further, according to the above-described configuration, the expander 5 and the supercharger 7 can be arranged regardless of the position of the power source 9, so that the expander 5 and the supercharger 7 can be connected to the air conditioner. It is not necessary to dispose it near the power source 9 of the cycle 2, and it is sufficient to appropriately select a disposable space and dispose it (in the above configuration example, it is disposed near the partition wall 13). Can be bigger. Moreover, the expander 5 and the supercharger 7
This means that it is not necessary to newly provide a bypass path or the like in order to provide them, but only to add them to the existing air-conditioning cycle in the middle of the pipe drawn from the evaporator 6.
【００２２】図３に本発明の第２の構成例が示され、以
下、主として異なる点を中心に説明し、同一構成部分に
は同一番号を付して説明を省略する。この構成例にあっ
ては、凝縮器４と膨張機５との間にレシーバタンク１５
を設け、このレシーバタンク１５よりも冷媒下流側で膨
張機５よりも冷媒上流側の箇所に膨張弁１６を配置する
ようにしている。この膨張弁１６は、感熱膨張弁からな
り、蒸発器６から流出する冷媒の過熱度の変化を感温筒
１７で感知し、蒸発器６に流入する冷媒量を調節して過
熱度を一定に保つようにした周知の構成を有している。FIG. 3 shows a second configuration example of the present invention. Hereinafter, mainly different points will be mainly described, and the same components will be denoted by the same reference numerals and description thereof will be omitted. In this configuration example, the receiver tank 15 is disposed between the condenser 4 and the expander 5.
The expansion valve 16 is disposed at a position downstream of the receiver tank 15 on the refrigerant side and upstream of the expander 5 on the refrigerant side. The expansion valve 16 is composed of a heat-sensitive expansion valve. The temperature-sensitive cylinder 17 detects a change in the degree of superheat of the refrigerant flowing out of the evaporator 6, and adjusts the amount of refrigerant flowing into the evaporator 6 to keep the degree of superheat constant. It has a well-known configuration to keep it.
【００２３】このような構成においては、凝縮器４で液
化した冷媒がレシーバタンク１５において気泡と分離さ
れ、膨張弁１６において蒸発器６の過熱度が一定となる
ように減圧膨張され、続く膨張機５においてエネルギー
の一部を羽根車の回転動力に変換してエネルギーの回収
を図り、第１の構成例と同様に冷却能力の向上を実現す
ると共に圧縮機の必要動力の低減を図るようになってい
る。In such a configuration, the refrigerant liquefied in the condenser 4 is separated from the bubbles in the receiver tank 15, and is decompressed and expanded in the expansion valve 16 so that the degree of superheat of the evaporator 6 is constant. 5, a part of the energy is converted into the rotational power of the impeller to recover the energy, thereby improving the cooling capacity and reducing the required power of the compressor as in the first configuration example. ing.
【００２４】即ち、モリエール線図としては、図４に示
されるように、膨張弁を追加したことで過熱度（ＳＨ）
が制御される分の変化はあるものの、全体としてみれ
ば、膨張機５と過給機７とを設けた破線で示されるサイ
クルと、これらを有しない実線で示される従来のサイク
ルとは、図２で示される変化とほぼ同様であり、冷却能
力をエンタルピー差（Δｉ’）の分だけ増加させること
ができると共に、過給機による昇圧分（ΔＰ’）だけ圧
縮機の仕事を低減することができ、効率のいいエアコン
サイクルを構成することができる。That is, as shown in FIG. 4, the degree of superheat (SH) is increased by adding an expansion valve.
Although there is a change to the extent that is controlled, as a whole, the cycle shown by the broken line provided with the expander 5 and the supercharger 7 and the conventional cycle shown by the solid line without these are shown in FIG. 2, the cooling capacity can be increased by the enthalpy difference (Δi ′), and the work of the compressor can be reduced by the pressure increase (ΔP ′) by the supercharger. It is possible to construct an efficient air-conditioning cycle.
【００２５】尚、図３で示す構成も、図１（ａ）で示す
ように、蒸発器６のみを車室側に、残りをエンジンルー
ム側にそれぞれ配置し、膨張機５と過給機７とを軸１０
を短くして仕切壁近傍のスペースに余裕のある箇所にま
とめて配置する構成が好ましい。特にこの構成において
は、既存のエアコンサイクルから膨張弁を除去する必要
がないので、膨張機５と過給機７との追加作業を行えば
足り、サイクルの変更作業も非常に容易なものとなる。In the configuration shown in FIG. 3, as shown in FIG. 1 (a), only the evaporator 6 is arranged on the vehicle compartment side and the rest is arranged on the engine room side, and the expander 5 and the supercharger 7 are arranged. And axis 10
It is preferable to shorten the distance and to arrange them collectively in a place where there is room in the space near the partition wall. In particular, in this configuration, since it is not necessary to remove the expansion valve from the existing air conditioner cycle, additional work of the expander 5 and the supercharger 7 is sufficient, and the work of changing the cycle becomes very easy. .
【００２６】[0026]
【発明の効果】以上述べたように、この発明によれば、
圧縮機、凝縮器、膨張機、蒸発器、過給機を含むように
この順で直列に配管接続してサイクルを構成し、膨張機
と過給機とを同軸上に配設するようにしたので、膨張機
において冷媒が減圧膨張する際のエネルギーを一部回収
することが可能となり、冷却能力を向上させると同時に
圧縮機で必要とする動力を低減することができ、サイク
ル全体として効率のよい運転が可能となる。As described above, according to the present invention,
A cycle was constructed by connecting pipes in series in this order so as to include a compressor, a condenser, an expander, an evaporator, and a supercharger, and the expander and the supercharger were arranged coaxially. Therefore, it is possible to recover a part of the energy when the refrigerant is decompressed and expanded in the expander, and it is possible to improve the cooling capacity and at the same time to reduce the power required by the compressor, thereby improving the efficiency of the entire cycle. Driving becomes possible.
【００２７】また、膨張機とこの膨張機で得られたエネ
ルギーで駆動する過給機とを圧縮機とは独立に設けたの
で、圧縮機との関係でレイアウトを決定する必要がなく
なり、レイアウトの自由度を大きくすることができ、狭
いスペースでも敷設しやすくなる。しかも、膨張機や過
給機を設けたことによって新たに配管を敷設する必要も
なく、既存のサイクルの配管途中に膨張機と過給機とを
追加する程度の僅かな変更で済み、既設のサイクルを変
更する場合にも対応することができる。Further, since the expander and the supercharger driven by the energy obtained by the expander are provided independently of the compressor, it is not necessary to determine the layout in relation to the compressor. The degree of freedom can be increased, and it is easy to lay even in a narrow space. In addition, there is no need to lay new piping due to the provision of an expander and a supercharger, and only a small change of adding an expander and a turbocharger in the middle of the existing cycle piping is sufficient. It is possible to cope with a case where the cycle is changed.
【図１】図１は、本発明にかかるエアコンサイクルの第
１の構成例を示し、図１（ａ）は、車両に搭載された状
態の概略を示す図、図１（ｂ）は、エアコンサイクル自
体を示す構成図である。FIG. 1 shows a first configuration example of an air conditioner cycle according to the present invention. FIG. 1 (a) is a diagram schematically showing a state of being mounted on a vehicle, and FIG. 1 (b) is an air conditioner. It is a block diagram showing a cycle itself.
【図２】図２は、図１で示すエアコンサイクルのモリエ
ール線図を示す。FIG. 2 is a Mollier diagram of the air conditioner cycle shown in FIG.
【図３】図３は、本発明にかかるエアコンサイクルの第
２の構成例を示す図である。FIG. 3 is a diagram showing a second configuration example of the air conditioner cycle according to the present invention.
【図４】図４は、図３で示すエアコンサイクルのモリエ
ール線図を示す。FIG. 4 is a Mollier diagram of the air conditioner cycle shown in FIG. 3;
１ 車両 ２ エアコンサイクル ３ 圧縮機 ４ 凝縮器 ５ 膨張機 ６ 蒸発器 ７ 過給機 １０ 軸 １１ エンジンルーム １２ 車室 １３ 仕切壁 １６ 膨張弁 DESCRIPTION OF SYMBOLS 1 Vehicle 2 Air-conditioning cycle 3 Compressor 4 Condenser 5 Expander 6 Evaporator 7 Turbocharger 10 Shaft 11 Engine room 12 Car room 13 Partition wall 16 Expansion valve
Claims (3)
昇圧された冷媒が流入されて放熱する凝縮器と、この凝
縮器よりも冷媒下流側に配されて冷媒を減圧する膨張機
と、この膨張機で減圧された冷媒が流入されて吸熱する
蒸発器と、前記蒸発器と圧縮機との間に配されて前記冷
媒を昇圧する過給機とを有し、前記膨張機と過給機とを
同軸上に配設したことを特徴とするエアコンサイクル。A compressor that pressurizes the refrigerant, a condenser that receives the refrigerant pressurized by the compressor and radiates heat, and an expander that is disposed downstream of the condenser and that decompresses the refrigerant. An evaporator that receives the refrigerant decompressed by the expander and absorbs heat; and a supercharger that is disposed between the evaporator and the compressor and pressurizes the refrigerant. An air conditioner cycle characterized in that the feeder and the feeder are arranged coaxially.
に関する温度に応じて開度が調節される膨張弁を設けた
ことを特徴とする請求項１記載のエアコンサイクル。2. The air conditioner cycle according to claim 1, wherein an expansion valve whose opening degree is adjusted according to the temperature of the evaporator is provided between the condenser and the expander.
ジンルーム側に配する車両用として用いられることを特
徴とする請求項１又は２記載のエアコンサイクル。3. The air conditioner cycle according to claim 1, wherein the evaporator is used for a vehicle in which the evaporator is disposed on the vehicle compartment side and the remaining is disposed on the engine room side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24214597A JP2964231B2 (en) | 1997-08-22 | 1997-08-22 | Air conditioner cycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24214597A JP2964231B2 (en) | 1997-08-22 | 1997-08-22 | Air conditioner cycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1163707A true JPH1163707A (en) | 1999-03-05 |
| JP2964231B2 JP2964231B2 (en) | 1999-10-18 |
Family
ID=17084997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24214597A Expired - Lifetime JP2964231B2 (en) | 1997-08-22 | 1997-08-22 | Air conditioner cycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2964231B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000329416A (en) * | 1999-03-15 | 2000-11-30 | Denso Corp | Refrigeration cycle |
| US6272871B1 (en) | 2000-03-30 | 2001-08-14 | Nissan Technical Center North America | Air conditioner with energy recovery device |
| US6655165B1 (en) | 2002-12-19 | 2003-12-02 | Nissan Technical Center North America, Inc. | Air conditioner with power recovery device having a sound suppression device |
| EP1376030A1 (en) * | 2002-06-25 | 2004-01-02 | Carrier Corporation | Refrigeration cycle with a main compressor and a screw expander-compressor |
| EP1467158A2 (en) * | 2003-04-09 | 2004-10-13 | Hitachi, Ltd. | Refrigeration cycle apparatus |
| US8459048B2 (en) | 2010-07-23 | 2013-06-11 | Nissan North America, Inc. | Gerotor expander for an air conditioning system |
| CN104422197A (en) * | 2013-08-19 | 2015-03-18 | 易真平 | Kinetic energy feedback heat pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101622153B1 (en) * | 2014-10-16 | 2016-05-18 | 주식회사 만도 | Hydraulic brake system |
-
1997
- 1997-08-22 JP JP24214597A patent/JP2964231B2/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000329416A (en) * | 1999-03-15 | 2000-11-30 | Denso Corp | Refrigeration cycle |
| US6272871B1 (en) | 2000-03-30 | 2001-08-14 | Nissan Technical Center North America | Air conditioner with energy recovery device |
| EP1376030A1 (en) * | 2002-06-25 | 2004-01-02 | Carrier Corporation | Refrigeration cycle with a main compressor and a screw expander-compressor |
| US6655165B1 (en) | 2002-12-19 | 2003-12-02 | Nissan Technical Center North America, Inc. | Air conditioner with power recovery device having a sound suppression device |
| EP1467158A2 (en) * | 2003-04-09 | 2004-10-13 | Hitachi, Ltd. | Refrigeration cycle apparatus |
| EP1467158A3 (en) * | 2003-04-09 | 2004-12-01 | Hitachi, Ltd. | Refrigeration cycle apparatus |
| US6923016B2 (en) | 2003-04-09 | 2005-08-02 | Sunao Funakoshi | Refrigeration cycle apparatus |
| US8459048B2 (en) | 2010-07-23 | 2013-06-11 | Nissan North America, Inc. | Gerotor expander for an air conditioning system |
| CN104422197A (en) * | 2013-08-19 | 2015-03-18 | 易真平 | Kinetic energy feedback heat pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2964231B2 (en) | 1999-10-18 |
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