JPH0278871A - Flush evaporator - Google Patents
Flush evaporatorInfo
- Publication number
- JPH0278871A JPH0278871A JP22872588A JP22872588A JPH0278871A JP H0278871 A JPH0278871 A JP H0278871A JP 22872588 A JP22872588 A JP 22872588A JP 22872588 A JP22872588 A JP 22872588A JP H0278871 A JPH0278871 A JP H0278871A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- evaporator
- flash evaporator
- vapor
- communicating pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003507 refrigerant Substances 0.000 claims abstract description 85
- 238000010521 absorption reaction Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 21
- 239000006096 absorbing agent Substances 0.000 abstract description 6
- 230000007423 decrease Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、熱媒体が直接し、蒸発器内で自己蒸発し、そ
のときの蒸発熱によって熱媒体を自己冷却するフラッシ
ュ蒸発器に係り、特に吸収式冷温水機もしくは吸収式冷
温風機に好適なフラッシュ蒸発器に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a flash evaporator in which a heat medium directly evaporates within the evaporator, and the heat medium is self-cooled by the heat of evaporation at that time. In particular, the present invention relates to a flash evaporator suitable for absorption type cold/hot water machines or absorption type cold/hot air machines.
〔従来の技術〕 □
従来のフラッシュ蒸発器には１例えば特開昭５８−２１
４７６０号に開示されるようにスプレーを利用して熱媒
体（以下液冷媒という）を滴下するフラッシュ蒸発器が
ある。[Prior art] □ Conventional flash evaporators include
As disclosed in Japanese Patent No. 4760, there is a flash evaporator that drips a heat medium (hereinafter referred to as liquid refrigerant) using a spray.
流入液冷媒の温度と蒸発器の器内蒸発圧力との平衡温度
差が大きい液冷媒流入口では液が沸騰し、冷媒蒸気の発
生量が多い、このため、過流速になると液冷媒の蒸気随
伴現象が発生する。At the liquid refrigerant inlet where there is a large equilibrium temperature difference between the temperature of the incoming liquid refrigerant and the evaporation pressure inside the evaporator, the liquid boils and a large amount of refrigerant vapor is generated.For this reason, when the flow rate becomes excessive, the liquid refrigerant vapor entrains. A phenomenon occurs.
本発明の目的は上記問題点を解決し蒸気随伴現象の発生
しないフラッシュ蒸発器を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and provide a flash evaporator that does not cause vapor entrainment phenomena.
上記目的は、互い違い（スタガー状）に複数段に受皿を
配置し、上段から下段へ液冷媒を流下させて自己蒸発さ
せるフラッシュ蒸発器において、上段から下段に向うに
従って受皿の配置間隔を狭くすることによって、達成さ
れる。The above purpose is to narrow the spacing between the trays from the top to the bottom in a flash evaporator in which saucers are arranged in multiple stages in a staggered manner and the liquid refrigerant flows down from the top to the bottom for self-evaporation. achieved by.
又、上記目的は、受皿を螺旋状に形成し、上方から下方
へ液冷媒を流下させて自己蒸発させるフラッシュ蒸発器
において、上方から下方へ向うに従って受皿の間隔を狭
くすることによって、達成される。Further, the above object is achieved in a flash evaporator in which the saucers are formed in a spiral shape and the liquid refrigerant flows downward from above to self-evaporate, and the spacing between the saucers is narrowed from the top to the bottom. .
互い違いに複数段に配置した受皿のうち、上段に配置す
る受皿の間隔を下段に配置する受皿の間隔より大きくす
ることＫよって、上段の受皿に多量の冷媒蒸気が発生し
ても蒸気随伴現象を伴うことなく冷媒蒸気は容易に冷媒
蒸気通路に流れることができる。Of the saucers arranged in multiple stages alternately, the interval between the saucers arranged in the upper stage is made larger than the interval between the saucers arranged in the lower stage.Therefore, even if a large amount of refrigerant vapor is generated in the upper stage saucers, the vapor accompanying phenomenon can be prevented. Refrigerant vapor can easily flow into the refrigerant vapor path without entrainment.
以下本発明の実施例を図面を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図はフラッシュ蒸発器の縦断面図、第２図は第１図
のｘ−Ｘ線に沿う横断面図である。蒸発器１は密閉され
た箱体２、この箱体２に互い違いに取付けられた複数の
冷媒受皿３ａ、３ｂ、３ｃ。FIG. 1 is a longitudinal cross-sectional view of the flash evaporator, and FIG. 2 is a cross-sectional view taken along line XX in FIG. 1. The evaporator 1 includes a sealed box 2 and a plurality of refrigerant trays 3a, 3b, and 3c attached alternately to the box 2.
３ｄ、３ｅ、液冷媒が通る冷媒連絡管４、この連絡管４
に結合される冷媒流入口５、冷媒連絡管６、この連絡管
６に結合された冷媒流出ロア、冷媒蒸気が通る冷媒蒸気
連絡管８から構成さ九、この連絡管８は吸収器（図示せ
ず）に通じている。前述の冷媒受皿３ａ〜３ｅは上段に
おいて互いの間隔は大きく、下段になるに従って互いの
間隔が小さく、即ち冷媒受皿４８〜４ｅの互いの間隔は
上段から下段になるに従って冷媒蒸気通路９ａ、９ｂ。3d, 3e, refrigerant communication pipe 4 through which liquid refrigerant passes, this communication pipe 4
It consists of a refrigerant inlet 5 connected to the refrigerant, a refrigerant communication pipe 6, a refrigerant outflow lower connected to the connection pipe 6, and a refrigerant vapor communication pipe 8 through which refrigerant vapor passes. ). The above-mentioned refrigerant trays 3a to 3e are spaced apart from each other in the upper stage, and the distance between them becomes smaller as they move toward the lower stage.In other words, the distance between the refrigerant trays 48 to 4e decreases from the upper stage to the lower stage.
９ｃ、９ｄ、９ｅが徐々に狭くなるよう配置されるが、
冷媒が流れ易いように若干斜むけることが好ましい。9c, 9d, and 9e are arranged so that they become gradually narrower,
It is preferable to angle it slightly so that the refrigerant can flow easily.
上記構成において、例えば案内のファンコイルユニット
で熱交換して加熱された冷媒は、冷媒連絡管４から流入
口５へ入るが、冷媒受皿３８〜３８を流れ、流下する過
程で高真空に保たれた蒸発器１内の圧力に相当する飽和
圧力まで液冷媒の一部が蒸発し、液冷媒は自己冷却して
液温か低下する。冷媒蒸気の通路９８〜９ｅは上段に大
きく。In the above configuration, the refrigerant heated by heat exchange with the guide fan coil unit, for example, enters the inlet 5 from the refrigerant communication pipe 4, but flows through the refrigerant trays 38 to 38, and is maintained at a high vacuum during the process of flowing down. A portion of the liquid refrigerant evaporates to a saturation pressure corresponding to the pressure inside the evaporator 1, and the liquid refrigerant self-cools and its temperature drops. The refrigerant vapor passages 98 to 9e are large in the upper stage.
下段になるに従って小さくなるよう配置されているため
、上段から下段の全てにおいて均一に蒸発し、効率的に
液冷媒の自己冷却作用がなされる。Since the refrigerant is arranged so that it becomes smaller toward the lower stage, it evaporates uniformly from the upper stage to the lower stage, and the self-cooling effect of the liquid refrigerant is efficiently performed.
自己冷却した液冷媒は流出ロア、連絡管６を経て再び前
述のファンコイルユニットへ導かれて室内の空気と熱交
換する。The self-cooled liquid refrigerant is led back to the aforementioned fan coil unit via the outflow lower and the connecting pipe 6, where it exchanges heat with the indoor air.
蒸発する冷媒蒸気の発生量は、液冷媒温度と蒸発器内の
蒸発圧′力との平衡温度差が大きい上段受皿３ａの方が
多く、下段３ｅ方にいくほど少なくなる。上述したよう
に本実施例によれば、上段受皿の冷媒蒸気通路を冷媒蒸
気発生量に応じて広くし、蒸気発生量の少ない下段受皿
の冷媒蒸気通路を狭く取っているため、蒸発した冷媒蒸
気流速が均一化でき、過流速による液冷媒の蒸気随伴現
象（未蒸発冷媒液滴が冷媒蒸気の流動に随伴する現象）
を防止し、蒸発器の効率低下防止と蒸発器の小形化に効
果がある。The amount of evaporated refrigerant vapor generated is greater in the upper tray 3a where the equilibrium temperature difference between the liquid refrigerant temperature and the evaporation pressure in the evaporator is large, and decreases toward the lower tray 3e. As described above, according to this embodiment, the refrigerant vapor passage in the upper tray is widened according to the amount of generated refrigerant vapor, and the refrigerant vapor passage in the lower tray, where the amount of vapor generated is small, is narrowed, so that the evaporated refrigerant vapor is The flow rate can be made uniform, and the liquid refrigerant vapor accompanying phenomenon due to excessive flow rate (a phenomenon in which unevaporated refrigerant droplets accompany the flow of refrigerant vapor)
This is effective in preventing a decrease in evaporator efficiency and downsizing the evaporator.
又、冷媒蒸気を吸収器へ導く吸収式冷凍機の場合に、蒸
気随伴現象によって冷媒液滴が吸収器へ流入すると吸収
器の溶液が液冷媒で直接希釈され、このために、吸収器
の冷媒蒸気吸収能力が低下する。また蒸発器では冷媒の
蒸発潜熱を有効利用できないため、冷房能力が低下する
。この結果、冷房サイクルのｃｏｐ （冷凍効率）が低
下する。In addition, in the case of an absorption refrigerator that introduces refrigerant vapor to an absorber, when refrigerant droplets flow into the absorber due to vapor entrainment phenomenon, the solution in the absorber is directly diluted with liquid refrigerant, and for this reason, the refrigerant in the absorber Vapor absorption capacity is reduced. Furthermore, since the evaporator cannot effectively utilize the latent heat of vaporization of the refrigerant, the cooling capacity decreases. As a result, the cop (refrigeration efficiency) of the cooling cycle decreases.
第３図はフラッシュ蒸発器の他の実施例で、冷媒受皿を
螺旋状に形成したものである。FIG. 3 shows another embodiment of the flash evaporator, in which the refrigerant tray is formed in a spiral shape.
フラッシュ蒸発器１１は密閉された箱体１２と、螺旋状
に形成された冷媒受皿１３．冷媒連絡管１４、流入口１
５．冷媒連絡管１６．流出口１７゜冷媒蒸気１８から構
成され、冷媒蒸気通路１９ａ。The flash evaporator 11 includes a sealed box 12 and a refrigerant tray 13 formed in a spiral shape. Refrigerant communication pipe 14, inlet 1
5. Refrigerant communication pipe 16. Outlet 17° consists of refrigerant vapor 18 and refrigerant vapor passage 19a.
１９ｂ、１９ｃ、１９ｄ、１９ｓは上段から下段になる
に従って間隔が徐々に狭くなっている。The spacing between 19b, 19c, 19d, and 19s gradually narrows from the top to the bottom.
上記構成において、液冷媒が連絡管１４．流入口１５を
経て冷媒受皿１３に流入し、流下して流出口１６から蒸
発器外へ出る過程で高真空に保たれた蒸発器１内で冷媒
が蒸発し、冷媒蒸気が冷媒蒸気連絡管１８から例えばフ
ァンコイルユニットもしくは吸収器へ導かれることは前
述の実施例と同様である。又、この実施例においても蒸
気随伴現象を伴うことなく冷媒蒸気が発生するという効
果があるが、受皿１３が連続しており、前述の実施例の
ように前段の受皿から次段の受皿へ冷媒が流れる際に液
冷媒が落下するという過程がないので、冷媒液滴の発生
は一層防止できる。In the above configuration, the liquid refrigerant is connected to the connecting pipe 14. The refrigerant flows into the refrigerant tray 13 through the inlet 15, flows down, and exits the evaporator through the outlet 16. During the process, the refrigerant evaporates in the evaporator 1, which is maintained at a high vacuum, and refrigerant vapor flows into the refrigerant vapor communication pipe 18. It is the same as in the previous embodiment that the air is guided from the air to, for example, a fan coil unit or an absorber. In addition, this embodiment also has the effect of generating refrigerant vapor without vapor entrainment, but the trays 13 are continuous, and the refrigerant flows from the previous tray to the next tray as in the previous embodiment. Since there is no process in which the liquid refrigerant falls when it flows, the generation of refrigerant droplets can be further prevented.
流入液冷媒の温度と器内蒸気圧力との平衡温度差が大き
い冷媒液流入部では沸騰して自己蒸発するが、その後の
下段の方では沸騰しにくくなるが、本発明は蒸発面積を
大きくとれるため十分に低温になる。その時蒸発器から
流出する冷媒蒸気流速は受皿上段も下段も均一になり、
冷媒液の蒸気随伴を防止する効果がある。At the refrigerant liquid inlet where there is a large equilibrium temperature difference between the temperature of the inflow liquid refrigerant and the steam pressure inside the vessel, it boils and self-evaporates, but boiling becomes difficult in the lower stages after that, but the present invention allows a large evaporation area. Therefore, the temperature becomes sufficiently low. At that time, the flow rate of refrigerant vapor flowing out from the evaporator becomes uniform in both the upper and lower trays.
This has the effect of preventing vapor entrainment of the refrigerant liquid.
図面は本発明に係るフラッシュ蒸発器の説明図で、第１
図は実施例の縦断面図、第２図は第１図のｘ−ｘｉに沿
う横断面図、第３図は他の実施例の縦断面図、第４図は
第３図のｘ−Ｘ線に沿う横断面図である。
１．１１・・・フラッシュ蒸発器、２，１２・・・箱体
、３ａ〜３ｅ、１３ａ〜１３ｅ・・・冷媒受皿、４，６
゜１４．１６・・・冷媒連絡管、５，１５・・・冷媒流
入口。
７．１７・・・冷媒流出０．８．１８・・・冷媒蒸気連
絡管、９ａ〜９ｅ、１９ａ〜１９ｅ・・・冷媒蒸気通路
。
毛 １１！］
第 ２ 囚
第３ 囚
！４４ 記The drawing is an explanatory diagram of the flash evaporator according to the present invention, and the first
The figure is a vertical cross-sectional view of the embodiment, FIG. 2 is a cross-sectional view taken along x-xi in FIG. 1, FIG. 3 is a vertical cross-sectional view of another embodiment, and FIG. FIG. 1.11... Flash evaporator, 2, 12... Box, 3a to 3e, 13a to 13e... Refrigerant tray, 4, 6
゜14.16... Refrigerant communication pipe, 5, 15... Refrigerant inlet. 7.17... Refrigerant outflow 0.8.18... Refrigerant vapor communication pipe, 9a to 9e, 19a to 19e... Refrigerant vapor passage. Hair 11! ] 2nd prisoner 3rd prisoner! 44 notes
Claims (1)
段へ熱媒体を流下させて自己蒸発させるフラッシュ蒸発
器において、上段から下段に向うに従つて受皿の配置間
隔を狭くすることを特徴とするフラッシュ蒸発器。 ２、吸収式冷温水機に用いることを特徴とする請求項１
記載のフラッシュ蒸発器。 ３、吸収式冷温風機に用いることを特徴とする請求項１
記載のフラッシュ蒸発器。 ４、受皿に繊維を充填することを特徴とする請求項１記
載のフラッシュ蒸発器。 ５、冷媒受皿を螺旋状に形成し、上方から下方へ熱媒体
を流下させて自己蒸発させるフラッシュ蒸発器において
、上方から下方へ向うに従つて受皿の間隔を狭く配置す
ることを特徴とするフラッシュ蒸発器。 ６、吸収式冷温水機に用いることを特徴とする請求項５
記載のフラッシュ蒸発器。 ７、吸収式冷温風機に用いることを特徴とする請求項５
記載のフラッシュ蒸発器。[Claims] 1. In a flash evaporator in which refrigerant trays are alternately arranged in a plurality of stages and the heat medium flows down from the upper stage to the lower stage to self-evaporate, the interval between the trays is changed from the upper stage to the lower stage. Flash evaporator characterized by narrowing. 2. Claim 1 characterized in that it is used for an absorption type water cooler/heater.
Flash evaporator as described. 3. Claim 1 characterized in that it is used for an absorption type cold/hot air fan.
Flash evaporator as described. 4. The flash evaporator according to claim 1, wherein the tray is filled with fibers. 5. A flash evaporator in which the refrigerant tray is spirally formed and the heat medium flows downward from above to self-evaporate, characterized in that the spacing between the trays becomes narrower from the top to the bottom. Evaporator. 6. Claim 5 characterized in that it is used for an absorption type water chiller/heater.
Flash evaporator as described. 7. Claim 5 characterized in that it is used for an absorption type cold/hot air fan.
Flash evaporator as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22872588A JPH0278871A (en) | 1988-09-14 | 1988-09-14 | Flush evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22872588A JPH0278871A (en) | 1988-09-14 | 1988-09-14 | Flush evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0278871A true JPH0278871A (en) | 1990-03-19 |
Family
ID=16880837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22872588A Pending JPH0278871A (en) | 1988-09-14 | 1988-09-14 | Flush evaporator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0278871A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014198031A1 (en) * | 2013-06-13 | 2014-12-18 | Trane International Inc. | Methods and systems of streaming refrigerant in a heat exchanger |
-
1988
- 1988-09-14 JP JP22872588A patent/JPH0278871A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014198031A1 (en) * | 2013-06-13 | 2014-12-18 | Trane International Inc. | Methods and systems of streaming refrigerant in a heat exchanger |
| US10317114B2 (en) | 2013-06-13 | 2019-06-11 | Trane International Inc. | Methods and systems of streaming refrigerant in a heat exchanger |
| US11092365B2 (en) | 2013-06-13 | 2021-08-17 | Trane International Inc. | Methods and systems of streaming refrigerant in a heat exchanger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4201263A (en) | Refrigerant evaporator | |
| JP3195100B2 (en) | High-temperature regenerator of absorption chiller / heater and absorption chiller / heater | |
| JPS6342291Y2 (en) | ||
| JP3102483B2 (en) | Absorption refrigerator | |
| JPH0278871A (en) | Flush evaporator | |
| KR890004392B1 (en) | Air cooled absorption refrigeration system | |
| JP2568769B2 (en) | Absorption refrigerator | |
| US3550394A (en) | Condensate heating of intermediate strength solution in two-stage absorption machine | |
| JP2881593B2 (en) | Absorption heat pump | |
| CN108827027B (en) | Pipe heat exchanger and downward film evaporator | |
| JP6805473B2 (en) | Absorption chiller | |
| US2164045A (en) | Refrigeration | |
| JPH05118708A (en) | Absorving/evaporating device | |
| US2323186A (en) | Refrigeration | |
| JPS6133483Y2 (en) | ||
| JP2779565B2 (en) | Absorption refrigerator | |
| JP7080001B2 (en) | Absorption chiller | |
| US1993379A (en) | Absorption refrigerating apparatus | |
| US3520144A (en) | Absorption refrigeration system | |
| KR0143852B1 (en) | Evaporator for absorptive airconditioner | |
| JP2973653B2 (en) | Absorption refrigerator | |
| JP3852891B2 (en) | Solution heat exchanger for absorption refrigerator | |
| JPS5933963Y2 (en) | Absorption chiller regenerator | |
| JP3027646B2 (en) | Absorption chiller / heater | |
| JP4004019B2 (en) | Absorption refrigerator |