JPH042864B2 - - Google Patents
Info
- Publication number
- JPH042864B2 JPH042864B2 JP7761683A JP7761683A JPH042864B2 JP H042864 B2 JPH042864 B2 JP H042864B2 JP 7761683 A JP7761683 A JP 7761683A JP 7761683 A JP7761683 A JP 7761683A JP H042864 B2 JPH042864 B2 JP H042864B2
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- condenser
- compressor
- oil
- evaporator
- 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
Links
- 239000003507 refrigerant Substances 0.000 claims description 51
- 239000000498 cooling water Substances 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000009834 vaporization Methods 0.000 claims description 4
- 230000008016 vaporization Effects 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 21
- 238000009835 boiling Methods 0.000 description 9
- 238000001704 evaporation Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ターボ圧縮機を用いた冷凍機に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a refrigerator using a turbo compressor.
現在大型冷凍機においては圧縮機や駆動機の潤
滑油としてオイルクーラーを有しているものが多
く、これらオイルクーラーの冷却は冷媒の蒸発潜
熱により冷却されるのが一般的である。
Currently, many large-sized refrigerators have oil coolers as lubricating oil for compressors and drive machines, and these oil coolers are generally cooled by the latent heat of vaporization of the refrigerant.
従来では、オイルクーラーを冷媒で冷却する方
法は市水等を必要としないという利点があるが、
オイルクーラーを冷却する容量分だけ、冷凍機の
冷凍容量が減少する欠点があり、しかも蒸発温度
が低すぎ、油が冷えすぎる場合があるなど問題が
あつた。
Conventionally, the method of cooling oil coolers with refrigerants has the advantage of not requiring city water, etc.
The drawback was that the refrigerating capacity of the refrigerator was reduced by the amount needed to cool the oil cooler, and the evaporation temperature was too low, causing the oil to become too cold.
本発明は、これら従来の欠点を排除しようとす
るもので、冷凍機の動力当たりの冷凍容量があま
り減少せず、しかも油温を適温に制御しうる冷凍
機を提供することを目的とするものである。 The present invention aims to eliminate these conventional drawbacks, and aims to provide a refrigerator that does not significantly reduce the refrigeration capacity per unit of power of the refrigerator and can control the oil temperature to an appropriate temperature. It is.
本発明は、圧縮機、凝縮器、減圧装置、被冷却
流体を冷却する蒸発器を備えた冷凍機において、
冷媒として非共沸混合冷媒を用い、前記圧縮機に
供給される油を冷媒液の蒸発潜熱により冷却する
ための補助蒸発器を備え、前記凝縮器は、凝縮器
内の冷媒流れの下流側端部に形成された低温側冷
媒出口が前記減圧装置を介して前記蒸発器に接続
され、かつ前記凝縮器内の冷媒流れの上流側端部
で凝縮器下部に形成された高温側冷媒出口が減圧
装置を経て前記補助蒸発器部に接続されていると
共に、該凝縮器内に前記冷媒流れと向流となる冷
却水流れとなつている冷却水配管を備えたことを
特徴とする冷凍機である。
The present invention provides a refrigerator equipped with a compressor, a condenser, a pressure reducing device, and an evaporator that cools a fluid to be cooled.
A non-azeotropic refrigerant mixture is used as a refrigerant, and an auxiliary evaporator is provided for cooling the oil supplied to the compressor using the latent heat of vaporization of the refrigerant liquid, and the condenser is located at the downstream end of the refrigerant flow in the condenser. A low-temperature side refrigerant outlet formed at the lower part of the condenser is connected to the evaporator via the pressure reducing device, and a high-temperature side refrigerant outlet formed at the lower part of the condenser is connected to the upstream end of the refrigerant flow in the condenser. A refrigerating machine characterized by comprising a cooling water pipe connected to the auxiliary evaporator section through the device and having a cooling water flow in the condenser that is countercurrent to the refrigerant flow. .
本発明の実施例を図面により説明すると、第１
図において、圧縮機１、凝縮機１６、膨張弁６の
減圧機構及び蒸発器１１から構成される冷凍機に
は冷媒として、非共沸混合冷媒が充填されてい
て、圧縮機１にて圧縮された冷媒ガスは冷媒の流
れの順に、高温側凝縮器２と低温側凝縮器２′と
よりなる凝縮器１６に送られる。この凝縮器１６
では冷媒ガスは冷却水配管３により冷媒に対して
向流で送られる冷却水により冷却され凝縮液化す
る。この凝縮冷媒の出口としては、冷却水の入口
側に近い、冷媒の流れの下流側の低温凝縮器２′
下部の主凝縮液出口ノズル４と、冷却水出口側に
近い冷媒の流れの上流側の高温側凝縮器２下部の
バイパス用凝縮液出口ノズル５との二つの出口が
ある。
Embodiments of the present invention will be described with reference to the drawings.
In the figure, a refrigerator consisting of a compressor 1, a condenser 16, a pressure reducing mechanism of an expansion valve 6, and an evaporator 11 is filled with a non-azeotropic mixed refrigerant as a refrigerant, and is compressed by the compressor 1. The refrigerant gas is sent to a condenser 16 consisting of a high temperature side condenser 2 and a low temperature side condenser 2' in the order of refrigerant flow. This condenser 16
In this case, the refrigerant gas is cooled by cooling water sent in a countercurrent to the refrigerant through the cooling water pipe 3, and is condensed and liquefied. The outlet of this condensed refrigerant is a low-temperature condenser 2' on the downstream side of the refrigerant flow, close to the inlet side of the cooling water.
There are two outlets: a main condensate outlet nozzle 4 at the bottom and a bypass condensate outlet nozzle 5 at the bottom of the high temperature side condenser 2 on the upstream side of the refrigerant flow near the cooling water outlet side.
冷却水出口部に近いところは、冷却水の温度が
高いので、ガスのうち、主として高沸点冷媒が凝
縮液化するので前記バイパス用凝縮液出口ノズル
５より出る液冷媒は主として高沸点冷媒である。
残りの冷媒ガスは配管１５を通つて低温側凝縮器
２′に送られる。一方冷却水入口部は冷却水温度
が低いので、主凝縮液出口ノズル４の分では低沸
点冷媒も凝縮し、このノズル４より主として低沸
点冷媒が流出する。 Since the temperature of the cooling water near the cooling water outlet is high, mainly the high-boiling point refrigerant among the gases is condensed and liquefied, so the liquid refrigerant coming out from the bypass condensate outlet nozzle 5 is mainly the high-boiling point refrigerant.
The remaining refrigerant gas is sent to the low temperature side condenser 2' through the pipe 15. On the other hand, since the cooling water temperature at the cooling water inlet is low, the low boiling point refrigerant is also condensed at the main condensate outlet nozzle 4, and mainly the low boiling point refrigerant flows out from this nozzle 4.
前記凝縮液出口ノズル５より流出した高沸点液
冷媒は膨張弁６により減圧され、補助蒸発器部７
内のチユーブ８内で、チユーブ外側の油により加
熱されて蒸発する。一方油は冷却されて、油ポン
プ９により圧縮機１に送られる。 The high boiling point liquid refrigerant flowing out from the condensate outlet nozzle 5 is depressurized by the expansion valve 6 and then transferred to the auxiliary evaporator section 7.
Inside the inner tube 8, the oil is heated and evaporated by the oil outside the tube. Meanwhile, the oil is cooled and sent to the compressor 1 by the oil pump 9.
また、前記主凝縮液出口ノズル４より流出した
低沸点冷媒は膨張弁１０で減圧され、蒸発器１１
に送られ被冷却流体を冷却する。逆に加熱されて
蒸発した冷媒ガスは高沸点冷媒とともに圧縮機１
に吸込まれる。 Further, the low boiling point refrigerant flowing out from the main condensate outlet nozzle 4 is depressurized by the expansion valve 10, and the evaporator 11
to cool the fluid to be cooled. On the other hand, the heated and evaporated refrigerant gas is sent to the compressor 1 along with the high boiling point refrigerant.
be sucked into.
なお第１図では高温側凝縮器２と低温側凝縮器
２′は別体となり、管路１５，１５′により接続さ
れているが、第２図のように一体とすることも可
能である。 In FIG. 1, the high-temperature side condenser 2 and the low-temperature side condenser 2' are separate bodies connected by pipes 15 and 15', but they can also be integrated as shown in FIG.
なお、前記補助蒸発器部７は圧縮機１を駆動す
るモーターの冷却作用としても活用するのも有効
である。 Note that it is also effective to utilize the auxiliary evaporator section 7 as a cooling function for the motor that drives the compressor 1.
この場合は第３図のように膨張弁６で減圧され
た冷媒は直接、圧縮機１の駆動用モーターケーシ
ング１３内に補助蒸発器部７を形成し、ロータ
ー、ステーターを冷却して、アキユームレーター
１４、吸込管１２を経て、圧縮器１に吸込まれ
る。 In this case, as shown in Fig. 3, the refrigerant whose pressure has been reduced by the expansion valve 6 is directly supplied to the auxiliary evaporator section 7 in the drive motor casing 13 of the compressor 1, cools the rotor and stator, and The air is sucked into the compressor 1 through the rotor 14 and the suction pipe 12.
この場合もモーター内部の液冷媒の蒸発温度は
蒸発器１１の蒸発温度より高くてよいので、この
非共沸混合冷媒を用いた冷凍サイクルが有効であ
る。 In this case as well, the evaporation temperature of the liquid refrigerant inside the motor may be higher than the evaporation temperature of the evaporator 11, so a refrigeration cycle using this non-azeotropic mixed refrigerant is effective.
この実施例では、バイパス用凝縮液出口ノズル
５より流出する冷媒は混合冷媒のうち露点の高い
冷媒、すなわち沸点の高い冷媒が濃くなつている
ので、補助蒸発器部７内の蒸発温度は比較的高く
なつている。一方蒸発器１１内の冷媒は主凝縮液
出口ノズル４を通つてくる露点の低い冷媒、すな
わち沸点の低い冷媒が濃くなつているので、この
部分の蒸発温度は低くなつている。従つて、吸込
管１２内の圧力は同一であるにもかかわらず、補
助蒸発器部７及び蒸発器１１内の蒸発温度は異な
つている。 In this embodiment, the refrigerant flowing out from the bypass condensate outlet nozzle 5 is concentrated in the refrigerant having a high dew point among the mixed refrigerants, that is, the refrigerant having a high boiling point, so that the evaporation temperature in the auxiliary evaporator section 7 is relatively high. It's getting expensive. On the other hand, since the refrigerant in the evaporator 11 has a low dew point, that is, a low boiling point, which passes through the main condensate outlet nozzle 4, and is concentrated, the evaporation temperature in this portion is low. Therefore, although the pressure in the suction pipe 12 is the same, the evaporation temperatures in the auxiliary evaporator section 7 and the evaporator 11 are different.
前記圧縮機１に供給される油の温度又はモータ
内温度は被冷却流体の温度より高いので、補助蒸
発器部７のチユーブ８やケーシング１３内の温度
が高くても、圧縮機に供給される油又はモータ内
は十分に冷却される。このことは熱力学的に考え
ても無駄なエネルギーを用いていないことを意味
する。 Since the temperature of the oil supplied to the compressor 1 or the temperature inside the motor is higher than the temperature of the fluid to be cooled, oil is supplied to the compressor even if the temperature inside the tube 8 or the casing 13 of the auxiliary evaporator section 7 is high. The oil or inside of the motor is sufficiently cooled. From a thermodynamic point of view, this means that no energy is wasted.
また補助蒸発器部７のチユーブ８内の蒸発温度
が高いので、油冷却の場合は、油が異常に冷えす
ぎることがなく制御が簡単である。 In addition, since the evaporation temperature in the tube 8 of the auxiliary evaporator section 7 is high, in the case of oil cooling, the oil does not get too cold and the control is simple.
本発明は、圧縮機に供給される油を冷媒液の蒸
発潜熱により冷却するための補助蒸発器を備え、
前記凝縮器は、凝縮器内の冷媒流れの下流側端部
に形成された低温側冷媒出口が前記減圧装置を介
して前記蒸発器に接続され、かつ前記凝縮器内の
冷媒流れの上流側端部で凝縮器下部に形成された
高温側冷媒出口が減圧装置を経て前記補助蒸発器
部に接続されていると共に、該凝縮器内に前記冷
媒流れと向流となる冷却水流れとなつている冷却
水配管を備えたことにより、冷媒にて圧縮機に供
給される油又はモータの冷却を行いながら動力当
たりの冷凍容量をあまり減少せしめず、油を冷却
する場合は油が冷えすぎることなく油温を適確に
制御するこができる効果を奏する。
The present invention includes an auxiliary evaporator for cooling the oil supplied to the compressor using the latent heat of vaporization of the refrigerant liquid,
The condenser is configured such that a low temperature side refrigerant outlet formed at a downstream end of the refrigerant flow in the condenser is connected to the evaporator via the pressure reducing device, and an upstream end of the refrigerant flow in the condenser. A high temperature side refrigerant outlet formed at the lower part of the condenser is connected to the auxiliary evaporator section via a pressure reducing device, and a cooling water flow is formed in the condenser in a countercurrent to the refrigerant flow. By providing cooling water piping, the refrigerant is used to cool the oil supplied to the compressor or the motor without significantly reducing the refrigeration capacity per unit of power, and when cooling oil, the oil does not get too cold. It has the effect of being able to accurately control the temperature.
第１図、第２図、第３図は本発明のそれぞれ別
の実施例のフロー図である。
１……圧縮機、２……高温側凝縮器、２′……
低温側凝縮器、３……冷却吸い配管、４，５……
凝縮液出口ノズル、６……膨張弁、７……補助蒸
発器部、８……チユーブ、９……油ポンプ、１０
……膨張弁、１１……蒸発器、１２……配管、１
３……ケーシング、１４……アキユムレーター、
１５，１５′……管路、１６……凝縮器。
1, 2, and 3 are flow diagrams of different embodiments of the present invention. 1...Compressor, 2...High temperature side condenser, 2'...
Low temperature side condenser, 3... Cooling suction pipe, 4, 5...
Condensate outlet nozzle, 6... Expansion valve, 7... Auxiliary evaporator section, 8... Tube, 9... Oil pump, 10
...Expansion valve, 11...Evaporator, 12...Piping, 1
3... Casing, 14... Accumulator,
15, 15'...pipe line, 16...condenser.
Claims (1)
却する蒸発器を備えた冷凍機において、冷媒とし
て非共沸混合冷媒を用い、前記圧縮機に供給され
る油を冷媒液の蒸発潜熱により冷却するための補
助蒸発器を備え、前記凝縮器は、凝縮器内の冷媒
流れの下流側端部に形成された低温側冷媒出口が
前記減圧装置を介して前記蒸発器に接続され、か
つ前記凝縮器内の冷媒流れの上流側端部で凝縮器
下部に形成された高温側冷媒出口が減圧装置を経
て前記補助蒸発器部に接続されていると共に、該
凝縮器内に前記冷媒流れと向流となる冷却水流れ
となつている冷却水配管を備えたことを特徴とす
る冷凍機。1. In a refrigerator equipped with a compressor, a condenser, a pressure reducing device, and an evaporator for cooling the fluid to be cooled, a non-azeotropic mixed refrigerant is used as the refrigerant, and the oil supplied to the compressor is heated by the latent heat of vaporization of the refrigerant liquid. an auxiliary evaporator for cooling, the condenser having a low temperature side refrigerant outlet formed at a downstream end of the refrigerant flow in the condenser connected to the evaporator via the pressure reducing device; A high-temperature side refrigerant outlet formed in the lower part of the condenser at the upstream end of the refrigerant flow in the condenser is connected to the auxiliary evaporator section via a pressure reducing device, and a A refrigerator characterized in that it is equipped with cooling water piping that allows cooling water to flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7761683A JPS59210267A (en) | 1983-05-04 | 1983-05-04 | Refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7761683A JPS59210267A (en) | 1983-05-04 | 1983-05-04 | Refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59210267A JPS59210267A (en) | 1984-11-28 |
| JPH042864B2 true JPH042864B2 (en) | 1992-01-21 |
Family
ID=13638841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7761683A Granted JPS59210267A (en) | 1983-05-04 | 1983-05-04 | Refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59210267A (en) |
-
1983
- 1983-05-04 JP JP7761683A patent/JPS59210267A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59210267A (en) | 1984-11-28 |
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