JP5197964B2 - Ejector type vacuum pump - Google Patents

Ejector type vacuum pump Download PDF

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Publication number
JP5197964B2
JP5197964B2 JP2007005841A JP2007005841A JP5197964B2 JP 5197964 B2 JP5197964 B2 JP 5197964B2 JP 2007005841 A JP2007005841 A JP 2007005841A JP 2007005841 A JP2007005841 A JP 2007005841A JP 5197964 B2 JP5197964 B2 JP 5197964B2
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Japan
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tank
liquid
ejector
vacuum pump
type vacuum
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JP2008169798A (en
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伸英 原
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Tlv Co Ltd
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Tlv Co Ltd
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Description

本発明は、エゼクタとポンプ手段を組み合わせたエゼクタ式真空ポンプに関する。エゼクタ式真空ポンプは、ポンプ手段で流体をエゼクタ内に循環させることにより、エゼクタ部で真空吸引力を生じるものであり、低圧蒸気使用装置等からの復水吸引回収装置として従来から用いられている。   The present invention relates to an ejector type vacuum pump in which an ejector and pump means are combined. The ejector type vacuum pump generates a vacuum suction force in the ejector section by circulating a fluid in the ejector by a pump means, and has been conventionally used as a condensate suction recovery device from a low-pressure steam using device or the like. .

従来のエゼクタ式真空ポンプは、渦巻きポンプと、この渦巻きポンプの吐出口と吸込口を結ぶ循環通路と、循環通路の途中に配置したエゼクタ及びタンクとで構成される。 A conventional ejector-type vacuum pump includes a spiral pump, a circulation path connecting a discharge port and a suction port of the spiral pump, and an ejector and a tank disposed in the middle of the circulation path.

上記従来のエゼクタ式真空ポンプでは、エゼクタでの吸引力を所定値に維持するために大量の冷却水を補給しなければならない問題があった。エゼクタで発生することのできる吸引力は、エゼクタを通過する液体の温度によって決まるために、特に、液体温度を下げる場合には、大量の冷却水を補給しなければならないのである。
特開平７−２５３１００号公報 The conventional ejector type vacuum pump has a problem that a large amount of cooling water has to be replenished in order to maintain the suction force of the ejector at a predetermined value. Since the suction force that can be generated by the ejector is determined by the temperature of the liquid passing through the ejector, a large amount of cooling water must be replenished particularly when the liquid temperature is lowered.
JP 7-253100 A

解決しようとする課題は、循環流体からの放熱を多くすることによって、補給する冷却流体の量を少なくすることのできるエゼクタ式真空ポンプを得ることである。   The problem to be solved is to obtain an ejector vacuum pump that can reduce the amount of cooling fluid to be replenished by increasing the heat radiation from the circulating fluid.

本発明は、エゼクタの入口側に液体圧送ポンプ手段を介して循環通路でタンクと接続したものにおいて、循環通路のタンク側端部に液体を噴霧する噴霧ノズルを取り付けて、当該噴霧ノズルでタンク内へ循環液体を霧状に供給することによって、タンク内での空気との接触面積が多くなり、循環液体の放熱量を増大させて、循環液体の温度をより低下させることができると共に、タンクの上部にタンク内を大気と連通する大気連通管を接続したものである。 The present invention is such that a spray nozzle for spraying liquid is attached to the tank side end portion of the circulation passage, and connected to the tank on the inlet side of the ejector via a liquid pumping pump means. By supplying the circulating liquid in the form of a mist , the area of contact with the air in the tank is increased, the amount of heat released from the circulating liquid can be increased, the temperature of the circulating liquid can be further lowered , and the tank Connected to the top is an air communication pipe that communicates with the atmosphere inside the tank.

本発明は、タンク内へ循環液体を噴霧する噴霧ノズルを取り付けたことにより、タンク内での噴霧循環液体と空気との接触面積が多くなり、循環液体から空気中への放熱量が増大することによって、補給する冷却流体の量を少なくすることができる。   In the present invention, by attaching a spray nozzle for spraying the circulating liquid into the tank, the contact area between the sprayed circulating liquid and the air in the tank increases, and the amount of heat released from the circulating liquid into the air increases. Thus, the amount of cooling fluid to be replenished can be reduced.

タンク内への噴霧ノズルは、１個だけ取り付けることもできるが、タンクの容積によっては２個以上の複数個を取り付けることもできる。   Although only one spray nozzle into the tank can be attached, two or more plural nozzles can be attached depending on the volume of the tank.

図１において、エゼクタ１と循環通路２と液体圧送ポンプ３、及び、循環通路２に介在したタンク４とでエゼクタ式真空ポンプを構成する。   In FIG. 1, an ejector type vacuum pump is constituted by an ejector 1, a circulation passage 2, a liquid pumping pump 3, and a tank 4 interposed in the circulation passage 2.

循環通路２のタンク４側端部に噴霧ノズル５を取り付ける。この噴霧ノズル５は、液体圧送ポンプ３から吐出されたタンク４内の液体を、エゼクタ１を通過して再度タンク４内へ噴霧するものであり、液体が噴霧されることによって、タンク４内での空気との接触面積が多くなり、循環液体の放熱量を増大させて、循環液体の温度をより低下させることができるものである。   A spray nozzle 5 is attached to the end of the circulation passage 2 on the tank 4 side. The spray nozzle 5 sprays the liquid in the tank 4 discharged from the liquid pump 3 through the ejector 1 and again into the tank 4. When the liquid is sprayed, the liquid is sprayed in the tank 4. This increases the contact area with the air, increases the heat radiation amount of the circulating liquid, and further reduces the temperature of the circulating liquid.

タンク４の上部には、冷却水を補給する冷却水補給管６を接続すると共に、タンク４内を大気と連通する大気連通管７を接続する。一方、タンク４の下部にはタンク４内の余剰水を外部へ排出する余剰水排出管８を接続する。また、エゼクタ１の吸込室には吸引通路９を接続する。 A cooling water supply pipe 6 for supplying cooling water is connected to the upper part of the tank 4, and an atmosphere communication pipe 7 that communicates the inside of the tank 4 with the atmosphere is connected. On the other hand, a surplus water discharge pipe 8 for discharging surplus water in the tank 4 to the outside is connected to the lower portion of the tank 4. A suction passage 9 is connected to the suction chamber of the ejector 1.

液体圧送ポンプ３からエゼクタ１へタンク４内の液体が吐出されてエゼクタ１で吸引力を発生し、吸引通路９から所定の流体、例えば、蒸気の凝縮した復水等を吸引する。   The liquid in the tank 4 is discharged from the liquid pressure pump 3 to the ejector 1 to generate a suction force in the ejector 1, and a predetermined fluid, for example, condensate condensed with steam, is sucked from the suction passage 9.

本発明のエゼクタ式真空ポンプの実施例を示す構成図。The block diagram which shows the Example of the ejector type vacuum pump of this invention.

符号の説明Explanation of symbols

１ エゼクタ
２ 循環通路
３ 液体圧送ポンプ
４ タンク
５ 噴霧ノズル
６ 冷却水補給管
７ 大気連通管
８ 余剰水排出管
DESCRIPTION OF SYMBOLS 1 Ejector 2 Circulation passage 3 Liquid pumping pump 4 Tank 5 Spray nozzle 6 Cooling water supply pipe 7 Atmospheric communication pipe 8 Excess water discharge pipe

Claims (1)

エゼクタの入口側に液体圧送ポンプ手段を介して循環通路でタンクと接続したものにおいて、循環通路のタンク側端部に液体を噴霧する噴霧ノズルを取り付けて、当該噴霧ノズルでタンク内へ循環液体を霧状に供給することによって、タンク内での空気との接触面積が多くなり、循環液体の放熱量を増大させて、循環液体の温度をより低下させることができると共に、タンクの上部にタンク内を大気と連通する大気連通管を接続したことを特徴とするエゼクタ式真空ポンプ。 A spray nozzle for spraying liquid is attached to the tank side end of the circulation passage, and connected to the tank on the inlet side of the ejector via a liquid pumping pump means, and the circulation liquid is introduced into the tank by the spray nozzle. By supplying in the form of a mist , the contact area with the air in the tank increases, the amount of heat dissipated in the circulating liquid can be increased, the temperature of the circulating liquid can be further lowered , and Ejector type vacuum pump, characterized in that it is connected to an atmosphere communication pipe that communicates with the atmosphere.
JP2007005841A 2007-01-15 2007-01-15 Ejector type vacuum pump Expired - Fee Related JP5197964B2 (en)

Priority Applications (1)

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JP2007005841A JP5197964B2 (en) 2007-01-15 2007-01-15 Ejector type vacuum pump

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Application Number Priority Date Filing Date Title
JP2007005841A JP5197964B2 (en) 2007-01-15 2007-01-15 Ejector type vacuum pump

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JP2008169798A JP2008169798A (en) 2008-07-24
JP5197964B2 true JP5197964B2 (en) 2013-05-15

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6076717B2 (en) * 2012-12-05 2017-02-08 株式会社テイエルブイ Ejector type vacuum pump
JP6130160B2 (en) * 2013-02-15 2017-05-17 株式会社テイエルブイ Ejector type vacuum pump
CN106151120B (en) * 2016-07-01 2018-07-13 连云港久盛电力辅机有限公司 A kind of heat radiating type water tank suitable for water jet air ejector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3620870B2 (en) * 1994-03-15 2005-02-16 株式会社テイエルブイ Ejector vacuum pump
JPH10196599A (en) * 1997-01-17 1998-07-31 Tlv Co Ltd Combination pump for both high temperature and low temperature
JP4260996B2 (en) * 1999-09-16 2009-04-30 株式会社テイエルブイ Evaporative cooling device
JP2006223928A (en) * 2005-02-15 2006-08-31 Tlv Co Ltd Steam-heating apparatus

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