JP3203145B2 - Vapor compression refrigeration equipment - Google Patents
Vapor compression refrigeration equipmentInfo
- Publication number
- JP3203145B2 JP3203145B2 JP07898495A JP7898495A JP3203145B2 JP 3203145 B2 JP3203145 B2 JP 3203145B2 JP 07898495 A JP07898495 A JP 07898495A JP 7898495 A JP7898495 A JP 7898495A JP 3203145 B2 JP3203145 B2 JP 3203145B2
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- evaporator
- liquid
- vapor
- liquid refrigerant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005057 refrigeration Methods 0.000 title claims description 29
- 230000006835 compression Effects 0.000 title claims description 15
- 238000007906 compression Methods 0.000 title claims description 15
- 239000003507 refrigerant Substances 0.000 claims description 131
- 239000007788 liquid Substances 0.000 claims description 74
- 238000007599 discharging Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 7
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000011555 saturated liquid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、冷暖房運転や給湯・冷
凍などに供する蒸気圧縮式冷凍装置に関するBACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vapor compression refrigeration system for cooling and heating operations, hot water supply and freezing.
【０００２】。[0002]
【従来の技術】従来、室内空調に利用する蒸気圧縮式冷
凍装置は、主に４つの要素部品によって構成されてい
る。以下に、この冷凍サイクルについて、図５に基づい
て説明する。同図に示すように、圧縮機１と、凝縮器２
と、減圧器３と、蒸発器４で冷凍サイクルが構成されて
おり、それぞれの要素部品は金属配管を介して接続され
ている。そして、フロンＲ−２２などの冷媒が、この冷
凍サイクル内を循環し、この冷媒が気体状態や液体状態
に変化することによって、熱の吸収または放出を行って
いる。2. Description of the Related Art Conventionally, a vapor compression refrigeration system used for indoor air conditioning is mainly composed of four component parts. Hereinafter, the refrigeration cycle will be described with reference to FIG. As shown in the figure, a compressor 1 and a condenser 2
, A decompressor 3 and an evaporator 4 constitute a refrigeration cycle, and the respective component parts are connected via metal piping. A refrigerant such as Freon R-22 circulates through the refrigeration cycle, and the refrigerant changes into a gas state or a liquid state, thereby absorbing or releasing heat.
【０００３】圧縮機１は、蒸発器４から送り込まれた低
圧のガス状冷媒を、圧縮することによって高温高圧のガ
ス状冷媒に変換し、この圧縮機１に金属配管を介して接
続された凝縮器２へ、高温高圧に圧縮されたガス状冷媒
を送り込んでいる。The compressor 1 converts the low-pressure gaseous refrigerant sent from the evaporator 4 into a high-temperature and high-pressure gaseous refrigerant by compressing the gaseous refrigerant, and connects the condensate connected to the compressor 1 via a metal pipe. A gaseous refrigerant compressed to a high temperature and a high pressure is sent to the vessel 2.
【０００４】そして、凝縮器２は、圧縮機１から送り込
まれた高温高圧のガス状冷媒を、空気または水等で冷却
することによって、高温高圧のガス状冷媒から熱を奪
い、ガス状冷媒を液化する。The condenser 2 cools the high-temperature and high-pressure gaseous refrigerant sent from the compressor 1 with air or water, thereby removing heat from the high-temperature and high-pressure gaseous refrigerant and converting the gaseous refrigerant. Liquefy.
【０００５】減圧器３は、金属配管を介して凝縮器２に
接続されており、凝縮器２から高圧の液状冷媒が送り込
まれる。そして、この減圧器３では、高温高圧の液状冷
媒を、減圧することによって蒸発しやすい低温の液状冷
媒にしている。[0005] The decompressor 3 is connected to the condenser 2 through a metal pipe, and a high-pressure liquid refrigerant is sent from the condenser 2. The decompressor 3 converts the high-temperature and high-pressure liquid refrigerant into a low-temperature liquid refrigerant that is easily evaporated by decompression.
【０００６】蒸発器４は、金属配管を介して減圧器３に
接続されており、減圧器３から低温の液状冷媒が送り込
まれる。この蒸発器４内に送り込まれた液状冷媒は、蒸
発器４内を通過する間に周囲から熱を奪うことによって
蒸発し、低圧のガス状冷媒が圧縮機１内に再び送り込ま
れる。[0006] The evaporator 4 is connected to the pressure reducer 3 via a metal pipe, from which a low-temperature liquid refrigerant is sent. The liquid refrigerant sent into the evaporator 4 evaporates by removing heat from the surroundings while passing through the evaporator 4, and the low-pressure gaseous refrigerant is sent back into the compressor 1.
【０００７】以上の冷凍サイクルを繰り返すことによっ
て、凝縮器２で放熱を行い、蒸発器４で吸熱により冷凍
を発生させる。次に、図６を参照して、上記冷凍サイク
ルにおけるそれぞれの要素部品による冷媒の状態変化に
ついて説明する。図６は、上記冷凍サイクルのモリエル
線図を示しており、縦軸に圧力、横軸にエンタルピーを
とっている。尚、図中、ｘは冷媒の気相状態、液相状態
および気液２相状態の境界を示す曲線であり、頂点ｙよ
り右側の曲線部分は飽和蒸気線を示し、頂点ｙより左側
の曲線部分は飽和液線を示している。[0007] By repeating the above refrigeration cycle, heat is radiated in the condenser 2 and refrigeration is generated by heat absorption in the evaporator 4. Next, with reference to FIG. 6, a description will be given of a change in the state of the refrigerant due to each element in the refrigeration cycle. FIG. 6 shows a Mollier diagram of the refrigeration cycle, in which the vertical axis represents pressure and the horizontal axis represents enthalpy. In the drawing, x is a curve indicating a boundary between a gas phase state, a liquid phase state, and a gas-liquid two-phase state of the refrigerant, a curve portion on the right side from the vertex y indicates a saturated vapor line, and a curve on the left side from the vertex y. The part shows the saturated liquid line.
【０００８】そして、上記の飽和蒸気線の右側の領域で
は冷媒は過熱蒸気であり、飽和蒸気線の左側の領域では
冷媒は湿り蒸気となっている。また、上記の飽和液線の
左側の領域では冷媒は液体状態であり、飽和液線の右側
の領域では冷媒は湿り蒸気となっている。よって、図中
ａ−ｂ間では、冷媒は圧縮機１で圧縮されることによっ
て、高温高圧の過熱蒸気となっている。また、図中ｂ−
ｃ間では、冷媒は凝縮器２内で凝縮されることによっ
て、過熱蒸気状態から液体状態になる。そして、図中ｃ
−ｄ間では、冷媒は減圧器３で減圧されることによっ
て、気液２相状態（液冷媒と蒸気冷媒）の液状冷媒とな
る。図中ｄ−ａ間では、液状の冷媒は蒸発器４内で周囲
から熱を奪うことによって蒸発し、過熱蒸気となる。そ
して、過熱蒸気となった冷媒が、再び圧縮機１内へ送り
込まれることになる。In the region on the right side of the above-mentioned saturated vapor line, the refrigerant is superheated vapor, and in the region on the left side of the saturated vapor line, the refrigerant is wet vapor. Further, the refrigerant is in a liquid state in a region on the left side of the saturated liquid line, and is in a wet vapor in a region on the right side of the saturated liquid line. Therefore, between a and b in the figure, the refrigerant is compressed by the compressor 1 to become high-temperature and high-pressure superheated steam. In addition, b-
During period c, the refrigerant is condensed in the condenser 2 to change from a superheated vapor state to a liquid state. And c in the figure
Between -d, the refrigerant is decompressed by the decompressor 3 to become a liquid refrigerant in a gas-liquid two-phase state (a liquid refrigerant and a vapor refrigerant). Between d and a in the figure, the liquid refrigerant evaporates by removing heat from the surroundings in the evaporator 4 to become superheated steam. Then, the refrigerant that has become the superheated steam is sent into the compressor 1 again.
【０００９】次に、蒸発器４での熱交換動作について説
明する。図７は蒸発器４内部での冷媒の状態変化を示す
概略断面図である。図７から分かるように、減圧器３か
ら送り込まれた液状冷媒（気液２相状態）の液冷媒が、
蒸発器４内を通過する間に周囲から熱を奪うことによっ
て蒸発し、蒸発器４出口では蒸気冷媒のみとなる。そし
て、この際の蒸発器４内部での熱交換効率が、蒸発器４
内部での冷媒の状態によって異なることが実験的に確認
されている。具体的には、図８に示すように、液状冷媒
の液冷媒の割合が大きい蒸発器４の冷媒流入側ではその
個所での熱伝達率が小さく、液冷媒の割合が小さくな
る、即ち、液状冷媒に対する蒸気冷媒の割合（以下、乾
き度という）が大きくなるに連れて熱伝達率が上昇する
傾向を有している。Next, the heat exchange operation in the evaporator 4 will be described. FIG. 7 is a schematic sectional view showing a state change of the refrigerant inside the evaporator 4. As can be seen from FIG. 7, the liquid refrigerant of the liquid refrigerant (gas-liquid two-phase state) sent from the pressure reducer 3 is:
While passing through the inside of the evaporator 4, it evaporates by removing heat from the surroundings. At the outlet of the evaporator 4, only the vapor refrigerant is present. The heat exchange efficiency inside the evaporator 4 at this time is
It has been experimentally confirmed that it differs depending on the state of the refrigerant inside. Specifically, as shown in FIG. 8, on the refrigerant inflow side of the evaporator 4 where the ratio of the liquid refrigerant to the liquid refrigerant is large, the heat transfer coefficient at that point is small, and the ratio of the liquid refrigerant is small. The heat transfer coefficient tends to increase as the ratio of the vapor refrigerant to the refrigerant (hereinafter, referred to as dryness) increases.
【００１０】[0010]
【発明が解決しようとする課題】このため、従来の蒸発
器４では、図８に示すように冷媒吐出側を除いて殆どの
領域において、乾き度が小さく、熱伝達率が低い状態で
熱交換されており、その結果、蒸発器４の冷媒流路管の
全長を長くしなければならず、圧力損失も大きなものと
なっていた。For this reason, in the conventional evaporator 4, as shown in FIG. 8, in almost all regions except for the refrigerant discharge side, heat exchange is low in a state of low dryness and low heat transfer coefficient. As a result, the total length of the refrigerant flow pipe of the evaporator 4 has to be increased, and the pressure loss is also large.
【００１１】本発明は、斯かる点に鑑みてなされたもの
であって、蒸発器内での熱交換効率を高め、従来装置に
比べ蒸発器内での圧力損失を低減させた蒸気圧縮式冷凍
装置を提供することを目的とする。The present invention has been made in view of the above points, and has been made in view of the above circumstances, and has been made to improve the heat exchange efficiency in an evaporator and reduce the pressure loss in the evaporator as compared with a conventional apparatus. It is intended to provide a device.
【００１２】[0012]
【課題を解決する為の手段】本発明による第１の蒸気圧
縮式冷凍装置は、蒸発器及び減圧器の間に設けられ、該
減圧器からの液状冷媒を蓄える受液タンクを備え、該受
液タンクは、前記液状冷媒を液冷媒と蒸気冷媒とに分離
して前記蒸発器に供給し、前記蒸発器の冷媒流路管の全
長において液状冷媒に対する蒸気冷媒の割合が６０％な
いし９０％の範囲内となるようにしたものである。A first vapor compression refrigeration system according to the present invention includes a liquid receiving tank provided between an evaporator and a decompressor for storing a liquid refrigerant from the decompressor. The liquid tank separates the liquid refrigerant into a liquid refrigerant and a vapor refrigerant and supplies the liquid refrigerant and the vapor refrigerant to the evaporator, and the ratio of the vapor refrigerant to the liquid refrigerant is 60% to 90% over the entire length of the refrigerant flow pipe of the evaporator. It is set to be within the range.
【００１３】そして、本発明による第２の蒸気圧縮式冷
凍装置は、蒸発器及び減圧器の間に設けられ、該減圧器
からの液状冷媒を蓄え、該液状冷媒を液冷媒と蒸気冷媒
とに分離して前記蒸発器に供給する受液タンクを備え、
該受液タンクは液冷媒を吐出する液冷媒出口と、蒸気冷
媒を吐出する蒸気冷媒出口とを有しており、該蒸気冷媒
出口を前記蒸発器の冷媒流入部に連結すると共に、前記
液冷媒出口を前記蒸発器の冷媒流入部及び冷媒流路途中
に連結しているものである。The second vapor compression refrigeration apparatus according to the present invention is provided between the evaporator and the pressure reducer, stores the liquid refrigerant from the pressure reducer, and converts the liquid refrigerant into a liquid refrigerant and a vapor refrigerant. A liquid receiving tank that is separated and supplied to the evaporator,
The liquid receiving tank has a liquid refrigerant outlet for discharging a liquid refrigerant, and a vapor refrigerant outlet for discharging a vapor refrigerant, and connects the vapor refrigerant outlet to a refrigerant inflow portion of the evaporator and the liquid refrigerant. The outlet is connected to the refrigerant inflow section of the evaporator and the middle of the refrigerant flow path.
【００１４】また、蒸発器内での液状冷媒に対する蒸気
冷媒の割合が６０％ないし９０％の範囲内となるように
したものである。The ratio of the vapor refrigerant to the liquid refrigerant in the evaporator is in the range of 60% to 90%.
【００１５】[0015]
【作用】本発明によれば、蒸発器内での液状冷媒に対す
る蒸気冷媒の割合が高めになるように設定することによ
り、高乾き度の状態において周囲と熱交換されることに
なる。According to the present invention, by setting the ratio of the vapor refrigerant to the liquid refrigerant in the evaporator to be high, heat exchange is performed with the surroundings in a state of high dryness.
【００１６】また、蒸発器内での液状冷媒に対する蒸気
冷媒の割合が６０％ないし９０％の範囲内となるように
設定することにより、従来装置に比べて蒸発器での平均
熱伝達率を２倍近くに向上させることができる。Further, by setting the ratio of the vapor refrigerant to the liquid refrigerant in the evaporator to be in the range of 60% to 90%, the average heat transfer coefficient in the evaporator can be reduced by 2 times as compared with the conventional apparatus. It can be improved almost twice.
【００１７】[0017]
【実施例】以下、本発明の蒸気圧縮式冷凍装置につい
て、その一実施例を示す図面に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a vapor compression refrigeration system according to the present invention will be described with reference to the drawings showing one embodiment.
【００１８】図１は本発明の蒸気圧縮式冷凍装置の冷媒
回路を示す概略構成図である。尚、上述の従来例（図
５）と同じ構成については、同一符号を付してある。図
において、５は減圧器としてのキャピラリーチューブ３
と蒸発器４との間に設けられた受液タンクであり、キャ
ピラリーチューブ３から送られてくる液状冷媒を蓄え、
その液状冷媒を液冷媒と蒸気冷媒とに分離して蒸発器４
に供給している。そして、後述するように、受液タンク
５から蒸発器４へ液冷媒及び蒸気冷媒を供給して、蒸発
器４内の全領域において乾き度を一定範囲内（本実施例
では６０％〜９０％に設定）に設定している。FIG. 1 is a schematic configuration diagram showing a refrigerant circuit of a vapor compression refrigeration system of the present invention. The same components as those in the above-described conventional example (FIG. 5) are denoted by the same reference numerals. In the figure, 5 is a capillary tube 3 as a decompressor
And a liquid receiving tank provided between the evaporator 4 and stores the liquid refrigerant sent from the capillary tube 3,
The liquid refrigerant is separated into a liquid refrigerant and a vapor refrigerant and the evaporator 4
To supply. Then, as described later, the liquid refrigerant and the vapor refrigerant are supplied from the liquid receiving tank 5 to the evaporator 4 so that the dryness of the entire region within the evaporator 4 is within a certain range (60% to 90% in the present embodiment). Set to).
【００１９】次に、上記構成の備えた本発明の蒸気圧縮
式冷凍装置における蒸発器４での熱交換動作について、
本発明の蒸発器４内部での冷媒の状態変化を示す概略断
面図（図２）を参照して説明する。尚、本発明の冷凍サ
イクルの基本的な動作原理は、上述した従来例と同一で
あるので詳細説明は省略する。Next, the heat exchange operation in the evaporator 4 in the vapor compression refrigeration system of the present invention having the above-mentioned structure will be described.
A description will be given with reference to a schematic cross-sectional view (FIG. 2) showing a state change of the refrigerant inside the evaporator 4 of the present invention. Note that the basic operation principle of the refrigeration cycle of the present invention is the same as that of the above-described conventional example, and thus detailed description is omitted.
【００２０】図２に示すように、キャピラリーチューブ
３から供給された低温の液状冷媒が受液タンク５に供給
され、受液タンク５において液冷媒と蒸気冷媒に分離さ
れ、そして、受液タンク５には液冷媒を吐出する液冷媒
出口６と、蒸気冷媒を吐出する蒸気冷媒出口７とが設け
られており、蒸気冷媒出口７を蒸発器４の冷媒流入部８
に配管接続すると共に、液冷媒出口６を蒸発器４の冷媒
流入部８及び冷媒流路途中の複数個所９（本実施例では
４個所）（以下、液冷媒供給部９と称する）に配管接続
している。そして、蒸発器４内の全領域において乾き度
が６０％〜９０％になるように、液冷媒出口６から供給
される液冷媒量を調節している。As shown in FIG. 2, the low-temperature liquid refrigerant supplied from the capillary tube 3 is supplied to the liquid receiving tank 5, where it is separated into a liquid refrigerant and a vapor refrigerant. Is provided with a liquid refrigerant outlet 6 for discharging a liquid refrigerant and a vapor refrigerant outlet 7 for discharging a vapor refrigerant. The vapor refrigerant outlet 7 is connected to a refrigerant inlet 8 of the evaporator 4.
And the liquid refrigerant outlet 6 is connected to the refrigerant inflow portion 8 of the evaporator 4 and to a plurality of locations 9 (four locations in this embodiment) in the middle of the refrigerant flow path (hereinafter, referred to as a liquid refrigerant supply portion 9). are doing. Then, the amount of the liquid refrigerant supplied from the liquid refrigerant outlet 6 is adjusted so that the dryness is 60% to 90% in the entire region in the evaporator 4.
【００２１】これにより、蒸発器４の冷媒流入部８及び
液冷媒供給部９において乾き度が６０％となるように、
受液タンク５から液冷媒が供給されている。また、液冷
媒供給部９は、周囲との熱交換により液冷媒が蒸発して
乾き度が９０％まで上昇した蒸発器４の冷媒流路位置に
設けられている。Accordingly, the refrigerant inflow section 8 and the liquid refrigerant supply section 9 of the evaporator 4 have a dryness of 60%.
Liquid refrigerant is supplied from the liquid receiving tank 5. The liquid refrigerant supply unit 9 is provided at a refrigerant flow path position of the evaporator 4 where the liquid refrigerant evaporates due to heat exchange with the surroundings and the dryness rises to 90%.
【００２２】次に、図３に蒸発器での乾き度と熱伝達率
との関係図を示す。図に示すように、乾き度が大きくな
るに連れて熱伝達率が徐々に上昇し、乾き度が６０％以
上になると急激に上昇している。そして、乾き度が９０
％前後でピーク値となり、その後、急激に減少する傾向
を有している。尚、上記図５に示す従来装置では、一般
に蒸発器４での平均乾き度が５０％前後となっている場
合が多く、図３から明らかなように、蒸発器４での平均
熱伝達率が低く、実験によると約５kW/m2Kであった。Next, FIG. 3 shows the relationship between the degree of dryness in the evaporator and the heat transfer coefficient. As shown in the figure, the heat transfer coefficient gradually increases as the degree of dryness increases, and sharply increases when the degree of dryness exceeds 60%. And the dryness is 90
%, And tends to sharply decrease thereafter. In the conventional apparatus shown in FIG. 5, the average dryness of the evaporator 4 is generally around 50% in many cases. As is clear from FIG. It was low, about 5 kW / m2K according to experiments.
【００２３】これに対して、本願の上記構成によると前
述したように、蒸発器４の冷媒流路管の全長において乾
き度が６０％〜９０％に設定されているため、図４に示
すように蒸発器４の各位置での熱伝達率が５．５〜１
２．５kW/m2Kとなり、全長での平均熱伝達率が約９kW/m
2Kであり、単位長当りの熱交換量が従来装置の２倍近く
となる。On the other hand, according to the configuration of the present invention, as described above, the dryness is set at 60% to 90% over the entire length of the refrigerant flow pipe of the evaporator 4, so that as shown in FIG. The heat transfer coefficient at each position of the evaporator 4 is 5.5 to 1
2.5 kW / m 2 K, average heat transfer coefficient over the entire length of about 9 kW / m
2 K, and the amount of heat exchange per unit length is nearly twice that of the conventional device.
【００２４】以上のように、本発明によれば蒸発器４に
おいて高乾き度の状態で熱交換することにより、従来に
比べ熱伝達率の向上させた熱交換を行うことができる。
尚、上記実施例では蒸発器４内での乾き度が６０〜９０
％となるように構成した場合について説明したが、特に
この範囲に限定する必要は無く、蒸発器内で乾き度が６
０％ないし９０％の範囲内であればその他の値であって
も構わない。As described above, according to the present invention, by performing heat exchange in the evaporator 4 in a state of high dryness, it is possible to perform heat exchange with an improved heat transfer coefficient as compared with the prior art.
In the above embodiment, the degree of dryness in the evaporator 4 is 60 to 90.
% Has been described, but it is not necessary to particularly limit to this range, and the degree of dryness in the evaporator is 6%.
Any other value within the range of 0% to 90% may be used.
【００２５】[0025]
【発明の効果】以上のとおり本発明によれば、蒸発器内
での液状冷媒に対する蒸気冷媒の割合が高めになるよう
に設定することにより、高乾き度の状態において周囲と
熱交換されることになり、従来装置に比べて蒸発器での
熱伝達率を飛躍的に向上させることができる。As described above, according to the present invention, by setting the ratio of the vapor refrigerant to the liquid refrigerant in the evaporator to be high, heat exchange with the surroundings can be achieved in a state of high dryness. Thus, the heat transfer coefficient in the evaporator can be dramatically improved as compared with the conventional apparatus.
【００２６】このため、従来装置に比べて、蒸発器の冷
媒流路管の全長を短くし、圧力損失を低減させることが
出来、冷凍装置の小型化を図ることが可能となる。For this reason, compared with the conventional apparatus, the total length of the refrigerant flow pipe of the evaporator can be shortened, the pressure loss can be reduced, and the size of the refrigeration apparatus can be reduced.
【図１】本発明の蒸気圧縮式冷凍装置の冷媒回路の概略
構成図である。FIG. 1 is a schematic configuration diagram of a refrigerant circuit of a vapor compression refrigeration apparatus of the present invention.
【図２】本発明の蒸発器内部での冷媒の状態変化を示す
概略断面図である。FIG. 2 is a schematic sectional view showing a state change of a refrigerant inside an evaporator of the present invention.
【図３】蒸発器での乾き度と熱伝達率との関係図であ
る。FIG. 3 is a diagram illustrating a relationship between dryness and a heat transfer coefficient in an evaporator.
【図４】本発明の蒸発器内部での熱伝達率の変化を示す
図である。FIG. 4 is a diagram showing a change in the heat transfer coefficient inside the evaporator of the present invention.
【図５】従来の蒸気圧縮式冷凍装置の冷媒回路の概略構
成図である。FIG. 5 is a schematic configuration diagram of a refrigerant circuit of a conventional vapor compression refrigeration apparatus.
【図６】蒸気圧縮式冷凍装置における冷凍サイクルのモ
リエル線図である。FIG. 6 is a Mollier chart of a refrigeration cycle in the vapor compression refrigeration apparatus.
【図７】蒸発器内部での冷媒の状態変化を示す概略断面
図である。FIG. 7 is a schematic sectional view showing a state change of a refrigerant inside an evaporator.
【図８】従来の蒸発器内部での熱伝達率の変化を示す図
である。FIG. 8 is a diagram showing a change in heat transfer coefficient inside a conventional evaporator.
１ 圧縮機 ２ 凝縮器 ３ 減圧器（キャピラリーチューブ） ４ 蒸発器 ５ 受液タンク ６ 液冷媒出口 ７ 蒸気冷媒出口 ８ 冷媒流入部 REFERENCE SIGNS LIST 1 compressor 2 condenser 3 decompressor (capillary tube) 4 evaporator 5 liquid receiving tank 6 liquid refrigerant outlet 7 vapor refrigerant outlet 8 refrigerant inflow section
───────────────────────────────────────────────────── フロントページの続き (72)発明者 黒河 通広 大阪府守口市京阪本通２丁目５番５号 三洋電機株式会社内 (72)発明者 名迫 賢二 大阪府守口市京阪本通２丁目５番５号 三洋電機株式会社内 (56)参考文献 特開 平３−17478（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F25B 39/02 F25B 1/00 383 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Mitsuhiro Kurokawa 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Kenji Nasako 2-chome Keihanhondori, Moriguchi-shi, Osaka No. 5-5 Inside Sanyo Electric Co., Ltd. (56) References JP-A-3-17478 (JP, A) (58) Field investigated (Int. Cl. 7 , DB name) F25B 39/02 F25B 1/00 383
Claims (3)
とを接続して冷凍サイクルを構成する蒸気圧縮式冷凍装
置において、 前記蒸発器及び減圧器の間に設けられ、該減圧器からの
液状冷媒を蓄える受液タンクを備え、 該受液タンクは、前記液状冷媒を液冷媒と蒸気冷媒とに
分離して前記蒸発器に供給し、前記蒸発器の冷媒流路管
の全長において液状冷媒に対する蒸気冷媒の割合が６０
％ないし９０％の範囲内となるようにしたことを特徴と
する蒸気圧縮式冷凍装置。1. A vapor compression refrigeration system comprising a compressor, an evaporator, a decompressor, and a condenser to form a refrigeration cycle, wherein the refrigeration cycle is provided between the evaporator and the decompressor. A liquid receiving tank for storing the liquid refrigerant from the container, wherein the liquid receiving tank separates the liquid refrigerant into a liquid refrigerant and a vapor refrigerant and supplies the liquid refrigerant and the vapor refrigerant to the evaporator; The ratio of vapor refrigerant to liquid refrigerant is 60
% To 90% .
とを接続して冷凍サイクルを構成する蒸気圧縮式冷凍装
置において、 前記蒸発器及び減圧器の間に設けられ、該減圧器からの
液状冷媒を蓄え、該液状冷媒を液冷媒と蒸気冷媒とに分
離して前記蒸発器に供給する受液タンクを備え、 該受液タンクは液冷媒を吐出する液冷媒出口と、蒸気冷
媒を吐出する蒸気冷媒出口とを有しており、該蒸気冷媒
出口を前記蒸発器の冷媒流入部に連結すると共に、前記
液冷媒出口を前記蒸発器の冷媒流入部及び冷媒流路途中
に連結していることを特徴とする蒸気圧縮式冷凍装置。2. A vapor compression refrigeration system comprising a compressor, an evaporator, a decompressor, and a condenser, forming a refrigeration cycle, wherein the refrigeration cycle is provided between the evaporator and the decompressor. A liquid receiving tank that stores the liquid refrigerant from the vessel, separates the liquid refrigerant into a liquid refrigerant and a vapor refrigerant, and supplies the liquid refrigerant to the evaporator. A vapor refrigerant outlet for discharging a refrigerant, the vapor refrigerant outlet being connected to a refrigerant inflow portion of the evaporator, and the liquid refrigerant outlet being connected to a refrigerant inflow portion of the evaporator and in the middle of the refrigerant flow path. A vapor compression refrigeration apparatus characterized in that:
の割合が６０％ないし９０％の範囲内となるようにした
ことを特徴とする請求項２に記載の蒸気圧縮式冷凍装
置。3. The vapor compression refrigeration system according to claim 2, wherein a ratio of the vapor refrigerant to the liquid refrigerant in the evaporator is in a range of 60% to 90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07898495A JP3203145B2 (en) | 1995-04-04 | 1995-04-04 | Vapor compression refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07898495A JP3203145B2 (en) | 1995-04-04 | 1995-04-04 | Vapor compression refrigeration equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08278068A JPH08278068A (en) | 1996-10-22 |
| JP3203145B2 true JP3203145B2 (en) | 2001-08-27 |
Family
ID=13677166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07898495A Expired - Fee Related JP3203145B2 (en) | 1995-04-04 | 1995-04-04 | Vapor compression refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3203145B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4591413B2 (en) * | 2006-06-26 | 2010-12-01 | 株式会社デンソー | Ejector refrigeration cycle |
-
1995
- 1995-04-04 JP JP07898495A patent/JP3203145B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08278068A (en) | 1996-10-22 |
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