JPS6118040B2 - - Google Patents

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Publication number
JPS6118040B2
JPS6118040B2 JP11314578A JP11314578A JPS6118040B2 JP S6118040 B2 JPS6118040 B2 JP S6118040B2 JP 11314578 A JP11314578 A JP 11314578A JP 11314578 A JP11314578 A JP 11314578A JP S6118040 B2 JPS6118040 B2 JP S6118040B2
Authority
JP
Japan
Prior art keywords
suction
water vapor
chamber body
steam
steam injection
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
Application number
JP11314578A
Other languages
Japanese (ja)
Other versions
JPS5540252A (en
Inventor
Katsumi Nagasaki
Yoshihiro Inoe
Osao Nakade
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP11314578A priority Critical patent/JPS5540252A/en
Publication of JPS5540252A publication Critical patent/JPS5540252A/en
Publication of JPS6118040B2 publication Critical patent/JPS6118040B2/ja
Granted legal-status Critical Current

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Description

【発明の詳細な説明】 本発明は水蒸気をノズルから噴射するエゼクタ
ーに関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ejector that injects water vapor from a nozzle.

従来、蒸気駆動式のエゼクターは、吸引対象流
体の吸引口に連通したデイフユーザと、このデイ
フユーザの入口部に設けられた蒸気噴射ノズルと
で単に構成されただけのものが多い。しかし、こ
のような従来のものでは、吸引負圧の発生源はデ
イフユーザと蒸気噴射ノズルとによるエゼクター
部のみにしか存在しないため、その吸引効率は非
常に悪かつた。
Conventionally, many steam-driven ejectors simply consist of a diffuser communicating with a suction port for a fluid to be sucked, and a steam injection nozzle provided at an inlet of the diffuser. However, in such conventional devices, the source of suction negative pressure exists only in the ejector section formed by the diffuser and the steam injection nozzle, so the suction efficiency is very poor.

そこで本発明は、このような従来技術における
問題点を解決し、水蒸気をノズルから噴射するエ
ゼクターの吸引効率をよくすることを目的とす
る。
SUMMARY OF THE INVENTION An object of the present invention is to solve these problems in the prior art and to improve the suction efficiency of an ejector that injects water vapor from a nozzle.

このため本発明は、吸引対象流体の吸引口に連
通したデイフユーザ入口部に蒸気噴射ノズルを設
け、前記デイフユーザの出口部を吸引対象流体の
吐出口を有した室体で囲み、前記室体内における
前記デイフユーザの出口部と吸引対象流体の吐出
口との間に復水部を設けたものである。
For this reason, the present invention provides a steam injection nozzle at the inlet of the diff user communicating with the suction port for the fluid to be aspirated, surrounds the outlet of the diff user with a chamber body having a discharge port for the fluid to be suctioned, and A condensate section is provided between the outlet section of the diffuser and the discharge port for the fluid to be sucked.

このような構成によると、蒸気噴射ノズルとデ
イフユーザとによるエゼクター効果にもとづく吸
引力のみならず、水蒸気噴射ノズルで噴射された
水蒸気および吸引対象流体中に含まれた水蒸気成
分を復水部で復水させて負圧を発生させることに
もとづく吸引力をも得ることができるため、吸引
効率の良好なエゼクターを得ることができる。
According to such a configuration, not only the suction force based on the ejector effect of the steam injection nozzle and the diffuser, but also the water vapor injected by the steam injection nozzle and the water vapor components contained in the suction target fluid are condensed in the condensing section. Since it is possible to obtain a suction force based on the negative pressure generated by the ejector, an ejector with good suction efficiency can be obtained.

以下、本発明の一実施例を図面に基づいて説明
する。
Hereinafter, one embodiment of the present invention will be described based on the drawings.

1は並設された2本の吸引塔であり、各吸引塔
1は垂直方向に重ねられた3段の室体2,3,4
からなる。5,6は各室体2,3,4間を区画す
る仕切壁である。下段の室体2は底壁に吸引口7
を有し、両吸引塔1,1の吸引口7,7が二又の
分岐管部8を介して1本の吸引管9に接続されて
いる。吸引管9は、吸引搬送経路や適宣の吸引作
業機器に接続される。各室体2,3,4内は、復
水部10,11,12により上部空間16aと下
部空間16bとに仕切られている。各復水部1
0,11,12は室体2,3,4にそれぞれ固定
された1対の金網13,13間に、空間率の高い
固形物14を充填してなるものである。各室体
2,3,4の上部空間16aには復水部10,1
1,12へ冷却水を噴射する複数のノズル15の
冷却水噴出口15aが開口させてある。各ノズル
15は各室体2,3,4の上壁を貫通して該上壁
に固定してあるが、上部空間16a内にノズル1
5の全体を配置してもよい。各室体2,3,4の
下部空間16bの側壁には排出口17が設けら
れ、各排出口17は一本の排出管18を介してポ
ンプ19に接続されている。排水管18にはトラ
ツプ20および逆止弁21が設けられている。中
段と上段の室体3,4の復水部11,12には上
端閉塞でかつ下端が下部空間16bに開口する筒
体33,34が垂直に貫通して設けられ、下部空
間16bがデイフユーザ22,23の出口部を含
むように該筒体33,34内に出口部を位置させ
てデイフユーザ22,23が両室体3,4の底壁
に固定されている。デイフユーザ22,23の入
口部はそれぞれ下段および中段の室体2,3の上
部空間16aに開口し、前段における吸引対象流
体の吐出口を形成している。同様に上段の室体4
の上壁には上部空間16aに入口部が開口するデ
イフユーザ24が設けられ、該デイフユーザ24
の出口部は大気中に開放されている。各デイフユ
ーザ22,23,24の入口部には水蒸気噴射ノ
ズル25a,26a,27aが配置されている。
これら蒸気噴射ノズル25a,26a,27aは
各室体2,3,4の側壁を貫通した管体25,2
6,27の先端開口により構成されており、管体
25,26,27の他端は供給管31を介して高
圧蒸気供給装置32に接続されている。
Reference numeral 1 indicates two suction towers arranged in parallel, and each suction tower 1 has three chamber bodies 2, 3, and 4 stacked vertically.
Consisting of 5 and 6 are partition walls that partition the chamber bodies 2, 3, and 4. The lower chamber body 2 has a suction port 7 on the bottom wall.
The suction ports 7, 7 of both suction towers 1, 1 are connected to one suction pipe 9 via a bifurcated branch pipe section 8. The suction tube 9 is connected to a suction conveyance path or appropriate suction work equipment. The inside of each chamber body 2, 3, 4 is partitioned by condensing parts 10, 11, 12 into an upper space 16a and a lower space 16b. Each condensate section 1
0, 11, and 12 are formed by filling a solid material 14 with a high void ratio between a pair of wire meshes 13 and 13 fixed to the chamber bodies 2, 3, and 4, respectively. In the upper space 16a of each chamber body 2, 3, 4, condensate portions 10, 1
Cooling water spout ports 15a of a plurality of nozzles 15 for injecting cooling water to the nozzles 1 and 12 are opened. Each nozzle 15 penetrates the upper wall of each chamber body 2, 3, 4 and is fixed to the upper wall.
5 may be arranged in its entirety. A discharge port 17 is provided in the side wall of the lower space 16b of each chamber body 2, 3, 4, and each discharge port 17 is connected to a pump 19 via a single discharge pipe 18. The drain pipe 18 is provided with a trap 20 and a check valve 21. The condensing parts 11 and 12 of the middle and upper chamber bodies 3 and 4 are vertically penetrated by cylinders 33 and 34 whose upper end is closed and whose lower end is open to the lower space 16b, and the lower space 16b is connected to the differential user 22. , 23 are located within the cylindrical bodies 33, 34, and the diffusers 22, 23 are fixed to the bottom walls of both chamber bodies 3, 4. The inlets of the diff users 22 and 23 open into the upper spaces 16a of the lower and middle chamber bodies 2 and 3, respectively, and form discharge ports for the fluid to be sucked in the previous stage. Similarly, the upper chamber body 4
A diff user 24 having an entrance opening in the upper space 16a is provided on the upper wall, and the diff user 24
The outlet section of is open to the atmosphere. Steam injection nozzles 25a, 26a, 27a are arranged at the inlet portions of each of the differential users 22, 23, 24.
These steam injection nozzles 25a, 26a, 27a are pipe bodies 25, 2 that penetrate the side walls of the respective chamber bodies 2, 3, 4.
The other ends of the pipe bodies 25, 26, 27 are connected to a high pressure steam supply device 32 via a supply pipe 31.

つぎに作用につき説明する。各水蒸気噴射ノズ
ル25a,26a,27aから水蒸気をデイフユ
ーザ22,23,24内に噴射させ、これにより
各室体2,3,4内に負圧が生じ、吸引管9から
水蒸気成分を含んだ吸引気流が吸引される。この
吸引気流が下段の室体2内に流入し、復水部10
を通過すると、吸引気流中の水蒸気成分は復水部
10を通過する間に、ノズル15から噴射されて
復水部10内を流下する冷却水により熱交換され
復水する。この復水および冷却水は排水管18か
ら排出される。このようにして吸引気流中の水蒸
気成分が復水されて水蒸気の体積が急減すること
により下段の室体2内の負圧が増大し、吸引力が
増大する。復水部10を通過して上部空間16a
に至つた吸引気流は水蒸気噴射ノズル25aから
噴射された水雑蒸気と共に、中段の室体3の下方
空間16bに流入し、この吸引気流の水蒸気成分
は上記と同様に復水部11を通過する間に復水す
る。このとき水蒸気の体積が急減し中段の室体3
内の負圧が増大する。この水蒸気成分の復水され
た吸引気流は、さらに蒸気噴射ノズル26aで噴
射された水蒸気と共に上段の室体4内に至り、復
水部12で復水された後、デイフユーザ24を介
して大気中に放出される。復水部12で復水され
るときも上記と同様に室体4内の負圧は増大す
る。このように、単に蒸気噴射ノズル25a,2
6a,27aとデイフユーザ22,23,24に
より吸引力を得るだけでなく、水蒸気噴射ノズル
25a,26a,27aで噴射された水蒸気およ
び吸引気流中に含まれた水蒸気成分を復水部1
0,11,12で復水するので、高い負圧を得る
ことができる。蒸気駆動エジエクタを、単に蒸気
噴射ノズルとデイフユーザのみで構成した場合、
該蒸気駆動エジエクタを多段に配置しても、上段
側の蒸気駆動エジエクタで発生する水蒸気のため
に負圧を上昇させることが困難である。しかし、
上記構成であると、水蒸気噴射ノズル25a,2
6a,27aで発生した水蒸気は復水部11,1
2で復水されるので、室体2,3,4の段数、す
なわち蒸気噴射ノズル22,23,24と復水部
10,11,12の段数を増加させることによ
り、高い真空度を得ることができる。吸引容量
は、並列配置される吸引塔1の個数又は室体2,
3,4の容量を増すことにより増大させることが
できる。
Next, the effect will be explained. Steam is injected into the diffuser 22, 23, 24 from each steam injection nozzle 25a, 26a, 27a, thereby creating a negative pressure in each chamber body 2, 3, 4, and suction containing steam components from the suction pipe 9. Airflow is aspirated. This suction airflow flows into the lower chamber body 2, and the condensate part 10
While passing through the condensing part 10, the water vapor component in the suction airflow undergoes heat exchange with the cooling water injected from the nozzle 15 and flowing down in the condensing part 10, and condenses. This condensate and cooling water are discharged from the drain pipe 18. In this way, the water vapor component in the suction airflow is condensed and the volume of the water vapor is rapidly reduced, thereby increasing the negative pressure within the lower chamber body 2 and increasing the suction force. Passing through the condensate section 10 to the upper space 16a
The suction airflow that has reached this point flows into the lower space 16b of the middle chamber body 3 together with water and miscellaneous vapor injected from the steam injection nozzle 25a, and the water vapor component of this suction airflow passes through the condensing part 11 in the same manner as above. Water condenses in between. At this time, the volume of water vapor decreases rapidly, and the middle chamber body 3
The negative pressure inside increases. This suction airflow containing the condensed water vapor component reaches the upper chamber 4 together with the water vapor injected by the steam injection nozzle 26a, is condensed in the condensing part 12, and then enters the atmosphere via the diffuser 24. is released. When water is condensed in the condensing section 12, the negative pressure within the chamber body 4 increases in the same way as described above. In this way, simply the steam injection nozzles 25a, 2
6a, 27a and the differential users 22, 23, 24, the water vapor injected by the water vapor injection nozzles 25a, 26a, 27a and the water vapor components contained in the suction airflow are transferred to the condensing section 1.
Since water condenses at 0, 11, and 12, high negative pressure can be obtained. When a steam-driven ejector is simply composed of a steam injection nozzle and a differential user,
Even if the steam-driven ejectors are arranged in multiple stages, it is difficult to increase the negative pressure due to the water vapor generated in the steam-driven ejectors on the upper stage side. but,
With the above configuration, the steam injection nozzles 25a, 2
The water vapor generated in 6a and 27a is transferred to condensing parts 11 and 1.
2, a high degree of vacuum can be obtained by increasing the number of stages of chamber bodies 2, 3, and 4, that is, the number of stages of steam injection nozzles 22, 23, and 24 and condensing parts 10, 11, and 12. I can do it. The suction capacity depends on the number of suction towers 1 arranged in parallel or the chamber bodies 2,
It can be increased by increasing the capacity of 3 and 4.

なお、上記実施例では室体2,3,4を直列に
複数段に配置したが、各室体2,3,4を単独で
用いることもできる。
In the above embodiment, the chamber bodies 2, 3, and 4 are arranged in series in a plurality of stages, but each chamber body 2, 3, and 4 may be used alone.

以上説明したように、本発明によれば水蒸気噴
射ノズルから噴射された水蒸気が、復水部におい
て冷却水により復水して水蒸気の体積が急減して
負圧が発生する。従つて、噴射された水蒸気によ
り発生する負圧に水蒸気の体積の急減による発生
する負圧が加わり、エゼクターの吸引効率がよく
なるものである。
As explained above, according to the present invention, the water vapor injected from the water vapor injection nozzle is condensed by the cooling water in the condensing part, and the volume of the water vapor is rapidly reduced to generate negative pressure. Therefore, the negative pressure generated by the sudden decrease in the volume of the steam is added to the negative pressure generated by the injected steam, improving the suction efficiency of the ejector.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明の一実施例を示す部分断面図であ
る。 1……吸引塔、2,3,4……室体、9……吸
引管、10,11,12……復水部、15……ノ
ズル、15a……冷却水噴出口、18……排水
管、22,23,24……デイフユーザ、25
a,26a,27a……水蒸気噴射ノズル、32
……蒸気供給装置、33,34……筒体。
The drawing is a partial sectional view showing an embodiment of the present invention. 1... Suction tower, 2, 3, 4... Chamber body, 9... Suction pipe, 10, 11, 12... Condensing part, 15... Nozzle, 15a... Cooling water spout, 18... Drainage Tube, 22, 23, 24... Defuser, 25
a, 26a, 27a... water vapor injection nozzle, 32
... Steam supply device, 33, 34 ... Cylindrical body.

Claims (1)

【特許請求の範囲】[Claims] 1 吸引対象流体の吸引口に連通したデイフユー
ザ入口部に蒸気噴射ノズルを設け、前記デイフユ
ーザの出口部を、吸引対象流体の吐出口を有した
室体で囲み、前記室体内における前記デイフユー
ザの出口部と吸引対象流体の吐出口との間に復水
部を設けたことを特徴とするエゼクター。
1. A steam injection nozzle is provided at the inlet of the diff user communicating with the suction port for the fluid to be aspirated, the outlet part of the diff user is surrounded by a chamber body having a discharge port for the fluid to be suctioned, and the outlet part of the diff user in the chamber body is provided with a steam injection nozzle. An ejector characterized in that a condensing part is provided between the and the discharge port for the fluid to be sucked.
JP11314578A 1978-09-13 1978-09-13 Ejector Granted JPS5540252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11314578A JPS5540252A (en) 1978-09-13 1978-09-13 Ejector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11314578A JPS5540252A (en) 1978-09-13 1978-09-13 Ejector

Publications (2)

Publication Number Publication Date
JPS5540252A JPS5540252A (en) 1980-03-21
JPS6118040B2 true JPS6118040B2 (en) 1986-05-10

Family

ID=14604702

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11314578A Granted JPS5540252A (en) 1978-09-13 1978-09-13 Ejector

Country Status (1)

Country Link
JP (1) JPS5540252A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5939997A (en) * 1982-08-31 1984-03-05 Sakou Giken:Kk Steam ejector
JPS5939998A (en) * 1982-08-31 1984-03-05 Sakou Giken:Kk Steam ejector
JPS5990800A (en) * 1982-11-15 1984-05-25 Sakou Giken:Kk Vapor ejector
JPS5990621A (en) * 1982-11-15 1984-05-25 Sakou Giken:Kk Steam ejector
JPH0515910Y2 (en) * 1988-01-28 1993-04-26
JPH01201225A (en) * 1988-02-04 1989-08-14 Nippon Patent Electric Kk Floor surface grinder

Also Published As

Publication number Publication date
JPS5540252A (en) 1980-03-21

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