JP2023020737A - dehumidifier - Google Patents

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JP2023020737A
JP2023020737A JP2021126269A JP2021126269A JP2023020737A JP 2023020737 A JP2023020737 A JP 2023020737A JP 2021126269 A JP2021126269 A JP 2021126269A JP 2021126269 A JP2021126269 A JP 2021126269A JP 2023020737 A JP2023020737 A JP 2023020737A
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adsorbent
compressed air
adsorbent container
adsorption
container
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JP2023020737A5 (en
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岳廣 松坂
Takehiro Matsuzaka
克昭 田中
Katsuaki Tanaka
真克 岡谷
Masakatsu Okaya
利明 矢部
Toshiaki Yabe
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FLAIR NAGAO Inc
Hitachi Industrial Equipment Systems Co Ltd
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FLAIR NAGAO Inc
Hitachi Industrial Equipment Systems Co Ltd
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Abstract

To provide a dehumidifier which can increase recovery of adsorption capacity of an adsorbent.SOLUTION: A dehumidifier 2 comprises: an adsorbent container 13A, 13B, 13C which include an adsorbent for adsorbing moisture content in compressed air; a selector valve 14A, 14B, 14C to 16A, 16B, 16C provided on one side of the adsorbent container 13A, 13B, 13C; a selector valve 17A, 17B, 17C, 18A, 18B, 18C provided on the other side of the adsorbent container 13A, 13B, 13C; and a control device 19 which controls the selector valve 14A, 14B, 14C to 18A, 18B, 18C, thereby sequentially switching processes for each adsorbent container to an adsorption process, a regeneration process, a cooling process, and an adsorption preparation process.SELECTED DRAWING: Figure 1

Description

本発明は、圧縮空気を除湿する除湿装置に関する。 The present invention relates to a dehumidifier for dehumidifying compressed air.

特許文献1の除湿装置は、圧縮空気中の水分(水蒸気)を吸着する吸着剤を内包した3つの吸着剤容器と、3つの吸着剤容器の一方側にそれぞれ設けられ、各吸着剤容器の一方側を第1ヘッダと第2ヘッダのうちの一方に連通する3つの第1切替弁(三方弁)と、3つの吸着剤容器の他方側にそれぞれ設けられ、各吸着剤容器の他方側を第3ヘッダと第4ヘッダのうちの一方に連通する3つの第2切替弁(三方弁)と、第2ヘッダを低温再生空気供給ラインと再生空気処理ラインのうちの一方に連通する第3切替弁(三方弁)と、第4ヘッダを高温再生空気供給ラインと再生空気処理ラインのうちの一方に連通する第4切替弁(三方弁)と、第1切替弁、第2切替弁、第3切替弁、及び第4切替弁を制御することにより、各吸着剤容器の工程を吸着工程、再生加熱工程、及び再生冷却工程に順次切替える制御装置とを備える。 The dehumidifier of Patent Document 1 is provided with three adsorbent containers containing an adsorbent that adsorbs moisture (water vapor) in compressed air, and one side of each of the three adsorbent containers. three first switching valves (three-way valves) communicating one side of the first header and the second header; Three second switching valves (three-way valves) communicating with one of the third header and the fourth header, and a third switching valve communicating the second header with one of the low temperature regeneration air supply line and the regeneration air processing line. (three-way valve); a fourth switching valve (three-way valve) that connects the fourth header to one of the high-temperature regeneration air supply line and the regeneration air processing line; a first switching valve, a second switching valve, and a third switching valve; and a control device for sequentially switching the process of each adsorbent vessel to an adsorption process, a regeneration heating process, and a regeneration cooling process by controlling the valve and the fourth switching valve.

第1ヘッダは、圧縮空気を冷却するアフタークーラの下流側に接続されている。第3ヘッダは、除湿装置の外部へ圧縮空気(乾燥空気)を供給する供給流路の上流側に接続されている。 The first header is connected downstream of an aftercooler that cools the compressed air. The third header is connected upstream of a supply channel that supplies compressed air (dry air) to the outside of the dehumidifier.

高温再生空気供給ラインは、アフタークーラと第1ヘッダの間から分流するように構成されており、アフタークーラの上流側の圧縮空気との熱交換により、アフタークーラで冷却された圧縮空気を加熱する加熱器を有する。そして、加熱器で加熱された圧縮空気(高温の再生空気)を再生加熱工程の吸着剤容器へ供給するようになっている。 The high-temperature regeneration air supply line is configured to divert from between the aftercooler and the first header, and heats the compressed air cooled by the aftercooler by heat exchange with the compressed air on the upstream side of the aftercooler. It has a heater. Then, the compressed air (high-temperature regeneration air) heated by the heater is supplied to the adsorbent container in the regeneration heating step.

低温再生空気供給ラインは、アフタークーラと第1ヘッダの間から分流するように構成されている。そして、アフタークーラで冷却された圧縮空気(低温の再生空気)を再生冷却工程の吸着剤容器へ供給するようになっている。 A cold regeneration air supply line is configured to divert from between the aftercooler and the first header. Then, the compressed air (low-temperature regeneration air) cooled by the aftercooler is supplied to the adsorbent container in the regeneration cooling step.

再生空気処理ラインは、アフタークーラと第1ヘッダの間に合流するように構成されており、再生加熱工程又は再生冷却工程の吸着剤容器から流出した圧縮空気(再生空気)を冷却する冷却器と、冷却器で冷却された圧縮空気から凝縮水を除去するドレンセパレータとを有する。 The regenerated air processing line is configured to join between the aftercooler and the first header, and serves as a cooler for cooling the compressed air (regenerated air) flowing out from the adsorbent vessel in the regeneration heating step or the regeneration cooling step. , and a drain separator for removing condensate from the compressed air cooled by the cooler.

制御装置は、第1切替弁を制御して吸着剤容器の一方側を第1ヘッダに連通し、第2切替弁を制御して吸着剤容器の他方側を第3ヘッダに連通する。これにより、吸着剤容器の工程を吸着工程に切替える。吸着剤容器の吸着工程では、アフタークーラで冷却された圧縮空気(湿り空気)が第1ヘッダを介し吸着剤容器の一方側に流入し、圧縮空気中の水分が吸着剤に吸着される。すなわち、圧縮空気が除湿される。その後、吸着剤容器の他方側から流出した圧縮空気(乾燥空気)が第3ヘッダ及び供給流路を介し外部へ供給される。 The control device controls the first switching valve to communicate one side of the adsorbent container with the first header, and controls the second switching valve to communicate the other side of the adsorbent container with the third header. Thereby, the process of the adsorbent container is switched to the adsorption process. In the adsorption process of the adsorbent container, the compressed air (moist air) cooled by the aftercooler flows into one side of the adsorbent container through the first header, and moisture in the compressed air is adsorbed by the adsorbent. That is, the compressed air is dehumidified. After that, the compressed air (dry air) flowing out from the other side of the adsorbent container is supplied to the outside through the third header and the supply channel.

制御装置は、第2切替弁を制御して吸着剤容器の他方側を第4ヘッダに連通すると共に、第4切替弁を制御して第4ヘッダを高温再生空気供給ラインに連通する。また、第1切替弁を制御して吸着剤容器の一方側を第2ヘッダに連通すると共に、第3切替弁を制御して第2ヘッダを再生空気処理ラインに連通する。これにより、吸着剤容器の吸着工程を再生加熱工程に切替える。吸着剤容器の再生加熱工程では、高温再生空気供給ラインからの高温の圧縮空気(再生空気)が第4ヘッダを介し吸着剤容器の他方側に流入し、吸着剤が加熱されて、吸着剤から水分が脱離される。その後、吸着剤容器の一方側から流出した圧縮空気が第2ヘッダを介し再生空気処理ラインへ供給される。 The controller controls the second switching valve to communicate the other side of the adsorbent vessel with the fourth header, and controls the fourth switching valve to communicate the fourth header with the high-temperature regeneration air supply line. Also, the first switching valve is controlled to connect one side of the adsorbent container to the second header, and the third switching valve is controlled to connect the second header to the regeneration air processing line. As a result, the adsorption process of the adsorbent container is switched to the regeneration heating process. In the adsorbent vessel regeneration heating step, high-temperature compressed air (regeneration air) from the high-temperature regeneration air supply line flows into the other side of the adsorbent vessel through the fourth header, and the adsorbent is heated. Moisture is released. Compressed air exiting one side of the adsorbent vessel is then supplied to the regeneration air treatment line through the second header.

制御装置は、第1切替弁を制御して吸着剤容器の一方側を第2ヘッダに連通すると共に、第3切替弁を制御して第2ヘッダを低温再生空気供給ラインに連通する。また、第2切替弁を制御して吸着剤容器の他方側を第4ヘッダに連通すると共に、第4切替弁を制御して第4ヘッダを再生空気処理ラインに連通する。これにより、吸着剤容器の再生加熱工程を再生冷却工程に切替える。吸着剤容器の再生冷却工程では、低温再生空気供給ラインからの低温の圧縮空気(再生空気)が第2ヘッダを介し吸着剤容器の一方側に流入し、吸着剤が冷却される。その後、吸着剤容器の他方側から流出した圧縮空気が第4ヘッダを介し再生空気処理ラインへ供給される。 The control device controls the first switching valve to communicate one side of the adsorbent container with the second header, and controls the third switching valve to communicate the second header with the low temperature regeneration air supply line. Also, the second switching valve is controlled to connect the other side of the adsorbent container to the fourth header, and the fourth switching valve is controlled to connect the fourth header to the regeneration air processing line. As a result, the regenerative heating process for the adsorbent container is switched to the regenerative cooling process. In the adsorbent vessel regeneration cooling step, low-temperature compressed air (regeneration air) from the low-temperature regeneration air supply line flows through the second header into one side of the adsorbent vessel to cool the adsorbent. After that, the compressed air flowing out from the other side of the adsorbent container is supplied to the regeneration air processing line through the fourth header.

特開平01-310717号公報JP-A-01-310717

特許文献1の除湿装置では、各吸着剤容器の工程を吸着工程、再生加熱工程、及び再生冷却工程に順次切替える。再生冷却工程を行うことにより、吸着剤を冷却して、その後の吸着工程における吸着剤の吸着能力を高めることが可能である。しかしながら、再生冷却工程は、低温の圧縮空気(再生空気)を用いて吸着剤を強制冷却する。そのため、吸着剤の冷却と同時に、圧縮空気中の水分が吸着剤に吸着されてしまい、吸着剤の吸着能力の回復度が減じる。 In the dehumidifier of Patent Document 1, the process of each adsorbent container is sequentially switched to an adsorption process, a regeneration heating process, and a regeneration cooling process. By performing the regeneration cooling step, it is possible to cool the adsorbent and increase the adsorption capacity of the adsorbent in the subsequent adsorption step. However, the regeneration cooling step uses cold compressed air (regeneration air) to force cool the adsorbent. Therefore, at the same time when the adsorbent is cooled, moisture in the compressed air is adsorbed by the adsorbent, and the degree of recovery of the adsorption capacity of the adsorbent is reduced.

本発明は、上記事柄に鑑みてなされたものであり、吸着剤の吸着能力の回復度を高めることを課題の一つとするものである。 The present invention has been made in view of the above problems, and one of the objects thereof is to increase the degree of recovery of the adsorption capacity of the adsorbent.

上記課題を解決するために、特許請求の範囲に記載の構成を適用する。本発明は、上記課題を解決するための手段を複数含んでいるが、その一例を挙げるならば、圧縮空気中の水分を吸着する吸着剤を内包した少なくとも3つの吸着剤容器と、前記少なくとも3つの吸着剤容器の一方側に設けられた少なくとも3つの第1切替弁と、前記少なくとも3つの吸着剤容器の他方側に設けられた少なくとも3つの第2切替弁と、前記第1切替弁及び前記第2切替弁を制御することにより、各吸着剤容器の工程を、低温の圧縮空気が前記吸着剤容器に流れて前記圧縮空気中の水分が前記吸着剤に吸着される吸着工程、高温の圧縮空気が前記吸着剤容器に流れて前記吸着剤から水分が脱離される再生工程、圧縮空気が前記吸着剤容器に流れないで前記吸着剤が自然冷却される冷却工程、及び前記吸着工程と比べて小流量となるように低温の圧縮空気が前記吸着剤容器に流れる吸着準備工程に順次切替える制御装置と、圧縮機ユニットから供給された圧縮空気を加熱し、前記第1切替弁を介し前記再生工程の前記吸着剤容器へ供給する加熱器と、前記第2切替弁を介し前記再生工程の前記吸着剤容器から流出した圧縮空気を冷却する冷却器と、前記冷却器で冷却された圧縮空気から凝縮水を除去し、前記第2切替弁を介し前記吸着工程か前記吸着準備工程の前記吸着剤容器へ前記圧縮空気を供給するドレンセパレータと、前記第1切替弁を介し前記吸着工程か前記吸着準備工程の前記吸着剤容器から流出した圧縮空気を外部へ供給する供給流路とを備える。 In order to solve the above problems, the configurations described in the claims are applied. The present invention includes a plurality of means for solving the above problems. To give an example, at least three adsorbent containers each containing an adsorbent that adsorbs moisture in compressed air; At least three first switching valves provided on one side of one adsorbent container, at least three second switching valves provided on the other side of the at least three adsorbent containers, the first switching valve and the By controlling the second switching valve, the process of each adsorbent vessel can be divided into an adsorption process in which low-temperature compressed air flows into the adsorbent vessel and moisture in the compressed air is adsorbed by the adsorbent, and a high-temperature compression process. Compared to a regeneration step in which air is flowed into the adsorbent vessel to desorb moisture from the adsorbent, a cooling step in which compressed air is not flowed into the adsorbent vessel and the adsorbent is naturally cooled, and the adsorption step A control device that sequentially switches to an adsorption preparation step in which low-temperature compressed air flows into the adsorbent container so that the flow rate is small; a heater that supplies to the adsorbent container of the above, a cooler that cools the compressed air that has flowed out of the adsorbent container in the regeneration step through the second switching valve, and condensed from the compressed air cooled by the cooler a drain separator that removes water and supplies the compressed air to the adsorbent container in the adsorption step or the adsorption preparation step through the second switching valve; and from the adsorption step or the adsorption preparation through the first switching valve. and a supply channel for supplying compressed air flowing out of the adsorbent container in the process to the outside.

本発明によれば、吸着剤の吸着能力の回復度を高めることができる。 ADVANTAGE OF THE INVENTION According to this invention, the recovery degree of the adsorption capability of adsorbent can be improved.

なお、上記以外の課題、構成及び効果は、以下の説明により明らかにされる。 Problems, configurations, and effects other than those described above will be clarified by the following description.

本発明の第1の実施形態における圧縮空気供給システムの構成を表す概略図であり、除湿装置の第1の吸着剤容器が吸着工程、第2の吸着剤容器が再生工程、第3の吸着剤容器が冷却工程である状態を示す。1 is a schematic diagram showing the configuration of a compressed air supply system according to a first embodiment of the present invention, in which a first adsorbent container of a dehumidifier is an adsorption step, a second adsorbent container is a regeneration step, and a third adsorbent The container is shown in a cooling process. 本発明の第1の実施形態における圧縮空気供給システムの構成を表す概略図であり、除湿装置の第1の吸着剤容器が吸着工程、第2の吸着剤容器が再生工程、第3の吸着剤容器が吸着準備工程である状態を示す。1 is a schematic diagram showing the configuration of a compressed air supply system according to a first embodiment of the present invention, in which a first adsorbent container of a dehumidifier is an adsorption step, a second adsorbent container is a regeneration step, and a third adsorbent It shows the state where the container is in the adsorption preparatory step. 本発明の第1の実施形態における圧縮空気供給システムの構成を表す概略図であり、除湿装置の第1の吸着剤容器が再生工程、第2の吸着剤容器が冷却工程、第3の吸着剤容器が吸着工程である状態を示す。1 is a schematic diagram showing the configuration of a compressed air supply system in a first embodiment of the present invention, in which a first adsorbent container of a dehumidifier is a regeneration step, a second adsorbent container is a cooling step, and a third adsorbent The vessel is shown in the adsorption process. 本発明の第1の実施形態における除湿装置の吸着剤容器の工程の推移を表す図である。It is a figure showing transition of the process of the adsorption agent container of the dehumidifier in the 1st Embodiment of this invention. 本発明の一変形例における圧縮空気供給システムの構成を表す概略図であり、除湿装置の第1の吸着剤容器が吸着工程、第2の吸着剤容器が再生工程、第3の吸着剤容器が冷却工程である状態を示す。It is a schematic diagram showing the configuration of a compressed air supply system in a modified example of the present invention, in which the first adsorbent container of the dehumidifier is in the adsorption process, the second adsorbent container is in the regeneration process, and the third adsorbent container is in the regeneration process. It shows the state of the cooling process. 本発明の一変形例における圧縮空気供給システムの構成を表す概略図であり、除湿装置の第1の吸着剤容器が吸着工程、第2の吸着剤容器が再生工程、第3の吸着剤容器が吸着準備工程である状態を示す。It is a schematic diagram showing the configuration of a compressed air supply system in a modified example of the present invention, in which the first adsorbent container of the dehumidifier is in the adsorption process, the second adsorbent container is in the regeneration process, and the third adsorbent container is in the regeneration process. It shows the state of the adsorption preparatory step. 本発明の一変形例における圧縮空気供給システムの構成を表す概略図であり、除湿装置の第1の吸着剤容器が再生工程、第2の吸着剤容器が冷却工程、第3の吸着剤容器が吸着工程である状態を示す。It is a schematic diagram showing the configuration of a compressed air supply system in a modified example of the present invention, in which the first adsorbent container of the dehumidifier is in the regeneration step, the second adsorbent container is in the cooling step, and the third adsorbent container is in the cooling step. It shows the state of the adsorption process. 本発明の第2の実施形態における圧縮空気供給システムの構成を表す概略図であり、除湿装置の第1の吸着剤容器が吸着工程、第2の吸着剤容器が再生工程である状態を示す。FIG. 4 is a schematic diagram showing the configuration of a compressed air supply system according to a second embodiment of the present invention, showing a state where the first adsorbent container of the dehumidifier is in the adsorption step and the second adsorbent container is in the regeneration step. 本発明の第2の実施形態における圧縮空気供給システムの構成を表す概略図であり、除湿装置の第1の吸着剤容器が吸着工程、第2の吸着剤容器が冷却工程である状態を示す。FIG. 4 is a schematic diagram showing the configuration of a compressed air supply system according to a second embodiment of the present invention, showing a state in which the first adsorbent container of the dehumidifier is in the adsorption process and the second adsorbent container is in the cooling process. 本発明の第2の実施形態における圧縮空気供給システムの構成を表す概略図であり、除湿装置の第1の吸着剤容器が吸着工程、第2の吸着剤容器が吸着準備工程である状態を示す。FIG. 4 is a schematic diagram showing the configuration of a compressed air supply system according to a second embodiment of the present invention, showing a state in which the first adsorbent container of the dehumidifier is in the adsorption step and the second adsorbent container is in the adsorption preparation step. . 本発明の第2の実施形態における圧縮空気供給システムの構成を表す概略図であり、除湿装置の第1の吸着剤容器が再生工程、第2の吸着剤容器が吸着工程である状態を示す。FIG. 4 is a schematic diagram showing the configuration of a compressed air supply system according to a second embodiment of the present invention, showing a state where the first adsorbent container of the dehumidifier is in the regeneration process and the second adsorbent container is in the adsorption process. 本発明の第2の実施形態における除湿装置の吸着剤容器の工程の推移を表す図である。It is a figure showing transition of the process of the adsorption agent container of the dehumidification apparatus in the 2nd Embodiment of this invention.

本発明の第1の実施形態を、図1~図4を用いて説明する。 A first embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG.

図1~図3は、本実施形態における圧縮空気供給システムの構成を表す概略図であり、図4は、本実施形態における除湿装置の吸着剤容器の工程の推移を表す図である。図1は、第1の吸着剤容器が吸着工程、第2の吸着剤容器が再生工程、第3の吸着剤容器が冷却工程である状態を示す。図2は、第1の吸着剤容器が吸着工程、第2の吸着剤容器が再生工程、第3の吸着剤容器が吸着準備工程である状態を示す。図3は、第1の吸着剤容器が再生工程、第2の吸着剤容器が冷却工程、第3の吸着剤容器が吸着工程である状態を示す。なお、図1~図3において、切替弁の閉状態を黒塗りで示し、開状態を白抜きで示す。 1 to 3 are schematic diagrams showing the configuration of the compressed air supply system according to the present embodiment, and FIG. 4 is a diagram showing the process transition of the adsorbent container of the dehumidifier according to the present embodiment. FIG. 1 shows the first adsorbent vessel in the adsorption step, the second adsorbent vessel in the regeneration step, and the third adsorbent vessel in the cooling step. FIG. 2 shows the first adsorbent vessel in the adsorption step, the second adsorbent vessel in the regeneration step, and the third adsorbent vessel in the adsorption preparatory step. FIG. 3 shows the first sorbent vessel in the regeneration step, the second sorbent vessel in the cooling step, and the third sorbent vessel in the adsorption step. 1 to 3, the closed state of the switching valve is shown in black, and the open state is shown in white.

本実施形態では、圧縮空気供給システムは、圧縮空気を生成する圧縮機ユニット1と、圧縮機ユニット1で生成された圧縮空気を除湿する除湿装置2とを備える。 In this embodiment, the compressed air supply system includes a compressor unit 1 that generates compressed air and a dehumidifier 2 that dehumidifies the compressed air generated by the compressor unit 1 .

圧縮機ユニット1は、吸込みフィルタ3を介し空気を吸込んで圧縮する低圧段圧縮機4と、低圧段圧縮機4から吐出された圧縮空気を冷却するインタークーラ5と、インタークーラ5で冷却された圧縮空気から凝縮水を除去するドレンセパレータ6Aと、ドレンセパレータ6Aからの圧縮空気を更に圧縮する高圧段圧縮機7と、高圧段圧縮機7から吐出された圧縮空気を190℃程度まで冷却するプレクーラ8と、プレクーラ8からの圧縮空気を40℃程度まで冷却するアフタークーラ9と、アフタークーラ9で冷却された圧縮空気から凝縮水を除去し、除湿装置2へ圧縮空気を供給するドレンセパレータ6Bとを備える。 The compressor unit 1 is cooled by a low-pressure stage compressor 4 that sucks and compresses air through a suction filter 3, an intercooler 5 that cools the compressed air discharged from the low-pressure stage compressor 4, and an intercooler 5. A drain separator 6A that removes condensed water from the compressed air, a high-pressure stage compressor 7 that further compresses the compressed air from the drain separator 6A, and a precooler that cools the compressed air discharged from the high-pressure stage compressor 7 to about 190°C. 8, an aftercooler 9 that cools the compressed air from the precooler 8 to about 40° C., and a drain separator 6B that removes condensed water from the compressed air cooled by the aftercooler 9 and supplies the compressed air to the dehumidifier 2. Prepare.

圧縮機ユニット1は、プレクーラ8とアフタークーラ9の間の流路に設けられた逆止弁10と、逆止弁10の上流側から分岐された流路に設けられた放気弁11と、アフタークーラ9の下流側における圧縮空気の圧力を検出する圧力センサ12と、圧力センサ12の検出結果に基づいて放気弁11を制御する制御装置(図示せず)とを更に備える。 The compressor unit 1 includes a check valve 10 provided in a flow path between the precooler 8 and the aftercooler 9, an air release valve 11 provided in a flow path branched from the upstream side of the check valve 10, A pressure sensor 12 that detects the pressure of the compressed air on the downstream side of the aftercooler 9 and a control device (not shown) that controls the air release valve 11 based on the detection result of the pressure sensor 12 are further provided.

圧縮機ユニット1の制御装置は、圧力センサ12で検出された圧力が所定の上限値まで上昇したときに、放気弁11を閉状態から開状態に切替えて、逆止弁10より上流側の圧縮空気を外部へ放出させる。これにより、負荷運転から無負荷運転へ切替える。その後、圧力センサ12で検出された圧力が所定の下限値まで下降したときに、放気弁11を開状態から閉状態に切替える。これにより、無負荷運転から負荷運転へ切替える。 When the pressure detected by the pressure sensor 12 rises to a predetermined upper limit, the control device of the compressor unit 1 switches the air release valve 11 from a closed state to an open state to open the upstream side of the check valve 10. Release compressed air to the outside. Thereby, the load operation is switched to the no-load operation. After that, when the pressure detected by the pressure sensor 12 drops to a predetermined lower limit, the release valve 11 is switched from the open state to the closed state. Thereby, the no-load operation is switched to the load operation.

除湿装置2は、圧縮空気中の水分を吸着する吸着剤(詳細には、活性アルミナ、シリカゲル、又は合成ゼオライト等)を内包した3つの吸着剤容器13A,13B,13Cと、吸着剤容器13Aの一方側(図1~図3の上側)に設けられた切替弁14A,15A,16A(第1切替弁)と、吸着剤容器13Aの他方側(図1~図3の下側)に設けられた切替弁17A,18A(第2切替弁)と、吸着剤容器13Bの一方側(図1~図3の上側)に設けられた切替弁14B,15B,16B(第1切替弁)と、吸着剤容器13Bの他方側(図1~図3の下側)に設けられた切替弁17B,18B(第2切替弁)と、吸着剤容器13Cの一方側(図1~図3の上側)に設けられた切替弁14C,15C,16C(第1切替弁)と、吸着剤容器13Cの他方側(図1~図3の下側)に設けられた切替弁17C,18C(第2切替弁)と、切替弁14A,14B,14C~18A,18B,18Cを制御することにより、各吸着剤容器の工程を吸着工程、再生工程、冷却工程、及び吸着準備工程に順次切替える制御装置19とを備える。 The dehumidifier 2 includes three adsorbent containers 13A, 13B, and 13C containing adsorbents (specifically, activated alumina, silica gel, synthetic zeolite, etc.) that adsorb moisture in compressed air, and the adsorbent container 13A. Switching valves 14A, 15A, 16A (first switching valves) provided on one side (the upper side in FIGS. 1 to 3) and the other side of the adsorbent container 13A (the lower side in FIGS. 1 to 3) are provided. Switching valves 17A, 18A (second switching valves), switching valves 14B, 15B, 16B (first switching valves) provided on one side of the adsorbent container 13B (upper side in FIGS. 1 to 3), and adsorption Switching valves 17B and 18B (second switching valves) provided on the other side (lower side in FIGS. 1 to 3) of the agent container 13B and one side (upper side in FIGS. 1 to 3) of the adsorbent container 13C. Switching valves 14C, 15C, 16C (first switching valves) provided, and switching valves 17C, 18C (second switching valves) provided on the other side (lower side in FIGS. 1 to 3) of the adsorbent container 13C and a control device 19 that sequentially switches the processes of each adsorbent vessel to an adsorption process, a regeneration process, a cooling process, and an adsorption preparation process by controlling the switching valves 14A, 14B, 14C to 18A, 18B, and 18C. .

除湿装置2は、圧縮機ユニット1から供給された圧縮空気を、例えばアフタークーラ9の上流側の圧縮空気との熱交換によって加熱し、切替弁14A,14B,14Cのうちのいずれかを介し再生工程の吸着剤容器へ圧縮空気を供給する加熱器20と、切替弁17A,17B,17Cのうちのいずれかを介し再生工程の吸着剤容器から流出した圧縮空気を冷却する冷却器21と、冷却器21で冷却された圧縮空気から凝縮水を除去し、切替弁18A,18B,18Cのうちのいずれかを介し吸着工程か吸着準備工程の吸着剤容器へ圧縮空気を供給するドレンセパレータ22と、切替弁15A,15B,15Cのうちのいずれかを介し吸着工程の吸着剤容器から流出した圧縮空気と切替弁16A,16B,16Cのうちのいずれかを介し吸着準備工程の吸着剤容器から流出した圧縮空気を除湿装置2の外部(詳細には、圧縮空気を使用する機器等)へ供給する供給流路23とを更に備える。 The dehumidifier 2 heats the compressed air supplied from the compressor unit 1, for example, by heat exchange with the compressed air on the upstream side of the aftercooler 9, and regenerates it through one of the switching valves 14A, 14B, and 14C. A heater 20 that supplies compressed air to the adsorbent vessel in the process, a cooler 21 that cools the compressed air that has flowed out of the adsorbent vessel in the regeneration process via one of the switching valves 17A, 17B, and 17C, and a cooling a drain separator 22 for removing condensed water from the compressed air cooled by the vessel 21 and supplying the compressed air to the adsorbent container for the adsorption process or the adsorption preparatory process through one of the switching valves 18A, 18B, and 18C; Compressed air that has flowed out of the adsorbent container in the adsorption step through one of the switching valves 15A, 15B, and 15C and the compressed air that has flowed out of the adsorbent container in the adsorption preparation step through one of the switching valves 16A, 16B, and 16C It further includes a supply channel 23 for supplying compressed air to the outside of the dehumidifier 2 (more specifically, equipment that uses compressed air, etc.).

切替弁(開閉弁)14A,14B,14Cの各々は、各吸着剤容器の一方側と加熱器20の下流側を接続する流路に配置されている。切替弁(開閉弁)15A,15B,15Cの各々は、各吸着剤容器の一方側と供給流路23の上流側を接続する流路に配置されている。切替弁(開閉弁)16Aは、切替弁15Aをバイパスする流路にオリフィス24Aと共に配置されている。切替弁(開閉弁)16Bは、切替弁15Bをバイパスする流路にオリフィス24Bと共に配置されている。切替弁(開閉弁)16Cは、切替弁15Cをバイパスする流路にオリフィス24Cと共に配置されている。切替弁(開閉弁)17A,17B,17Cの各々は、各吸着剤容器の他方側と冷却器21の上流側を接続する流路に配置されている。切替弁(開閉弁)18A,18B,18Cの各々は、各吸着剤容器の他方側とドレンセパレータ22の下流側を接続する流路に配置されている。 Each of the switching valves (on-off valves) 14A, 14B, and 14C is arranged in a channel connecting one side of each adsorbent container and the downstream side of the heater 20 . Each of the switching valves (on-off valves) 15A, 15B, and 15C is arranged in a channel connecting one side of each adsorbent container and the upstream side of the supply channel 23 . A switching valve (on-off valve) 16A is arranged together with an orifice 24A in a flow path that bypasses the switching valve 15A. The switching valve (on-off valve) 16B is arranged together with the orifice 24B in a flow path that bypasses the switching valve 15B. A switching valve (on-off valve) 16C is arranged together with an orifice 24C in a flow path that bypasses the switching valve 15C. Each of the switching valves (on-off valves) 17A, 17B, and 17C is arranged in a channel connecting the other side of each adsorbent container and the upstream side of the cooler 21 . Each of the switching valves (on-off valves) 18A, 18B, and 18C is arranged in a channel connecting the other side of each adsorbent container and the downstream side of the drain separator 22 .

制御装置19は、例えば、プログラム等を記憶するメモリと、プログラムに従って処理を実行するプロセッサとを有するものである。制御装置19は、上述した通り、切替弁14A,14B,14C~18A,18B,18Cを制御することにより、各吸着剤容器の工程を吸着工程、再生工程、冷却工程、及び吸着準備工程に順次切替える。このとき、図4で示すように、吸着剤容器13A,13B,13Cの工程を互いにずらすように制御する。これにより、吸着剤容器13A,13B,13Cのうちの1つの吸着剤容器に吸着工程を行わせて、圧縮空気の除湿を連続的に行わせる。また、別の吸着剤容器に再生工程を行わせて、吸着剤の吸着能力を回復させると共に、更に別の吸着剤容器に冷却工程及び吸着準備工程を行わせるようになっている。その詳細を説明する。 The control device 19 has, for example, a memory that stores programs and the like, and a processor that executes processes according to the programs. As described above, the control device 19 controls the switching valves 14A, 14B, 14C to 18A, 18B, and 18C so that the process of each adsorbent vessel is sequentially changed to the adsorption process, the regeneration process, the cooling process, and the adsorption preparation process. switch. At this time, as shown in FIG. 4, the processes of the adsorbent containers 13A, 13B, and 13C are controlled so as to be shifted from each other. As a result, one of the adsorbent containers 13A, 13B, and 13C is caused to perform the adsorption step to continuously dehumidify the compressed air. In addition, another adsorbent container is caused to undergo a regeneration step to recover the adsorption capacity of the adsorbent, and another adsorbent container is caused to undergo a cooling step and an adsorption preparatory step. The details will be explained.

例えば図1で示すように、制御装置19は、吸着剤容器13Bの制御として、切替弁15B,16B,18Bを閉状態に制御し、切替弁14Bを開状態に制御して吸着剤容器13Bの一方側を加熱器20の下流側に連通し、切替弁17Bを開状態に制御して吸着剤容器13Bの他方側を冷却器21の上流側に連通する。これにより、吸着剤容器13Bに再生工程を行わせる。吸着剤容器13Bの再生工程では、加熱器20からの高温の圧縮空気が吸着剤容器13Bの一方側に流入し、吸着剤が加熱されて、吸着剤から水分が脱離される。その後、吸着剤容器13Bの他方側から流出した圧縮空気は、冷却器21で冷却され、ドレンセパレータ22で凝縮水が除去される。 For example, as shown in FIG. 1, the controller 19 closes the switching valves 15B, 16B, and 18B and opens the switching valve 14B to control the adsorbent container 13B. One side is communicated with the downstream side of the heater 20 and the other side of the adsorbent container 13B is communicated with the upstream side of the cooler 21 by controlling the switching valve 17B to be open. This causes the adsorbent container 13B to perform the regeneration step. In the process of regenerating the adsorbent container 13B, high-temperature compressed air from the heater 20 flows into one side of the adsorbent container 13B to heat the adsorbent and desorb moisture from the adsorbent. After that, the compressed air that has flowed out from the other side of the adsorbent container 13B is cooled by the cooler 21 and the condensed water is removed by the drain separator 22 .

制御装置19は、上述した吸着剤容器13Bの制御と同時に、吸着剤容器13Aの制御として、切替弁14A,16A,17Aを閉状態に制御し、切替弁18Aを開状態に制御して吸着剤容器13Aの他方側をドレンセパレータ22の下流側に連通し、切替弁15Aを開状態に制御して吸着剤容器13Aの一方側を供給流路23の上流側にオリフィス24Aを介さず連通する。これにより、吸着剤容器13Aに吸着工程を行わせる。吸着剤容器13Aの吸着工程では、ドレンセパレータ22からの低温の圧縮空気が吸着剤容器13Aの他方側に流入し、圧縮空気中の水分が吸着剤に吸着される。すなわち、圧縮空気が除湿される。その後、吸着剤容器13Aの一方側から流出した圧縮空気が供給流路23を介し除湿装置2の外部へ供給される。 At the same time as controlling the adsorbent container 13B described above, the controller 19 controls the switching valves 14A, 16A, and 17A to close and the switching valve 18A to open to control the adsorbent container 13A. The other side of the container 13A is communicated with the downstream side of the drain separator 22, and the switching valve 15A is controlled to be open to communicate the one side of the adsorbent container 13A with the upstream side of the supply channel 23 without passing through the orifice 24A. This causes the adsorbent container 13A to perform the adsorption step. In the adsorption step of the adsorbent container 13A, low-temperature compressed air from the drain separator 22 flows into the other side of the adsorbent container 13A, and moisture in the compressed air is adsorbed by the adsorbent. That is, the compressed air is dehumidified. After that, the compressed air flowing out from one side of the adsorbent container 13A is supplied to the outside of the dehumidifier 2 through the supply flow path 23 .

制御装置19は、上述した吸着剤容器13A,13Bの制御と同時に、吸着剤容器13Cの制御として、切替弁14C~18Cを閉状態に制御する。これにより、吸着剤容器13Cに冷却工程を行わせる。吸着剤容器13Cの冷却工程では、圧縮空気が吸着剤容器13Cに流れないで、吸着剤が自然冷却される。 At the same time as controlling the adsorbent containers 13A and 13B described above, the controller 19 controls the adsorbent container 13C to close the switching valves 14C to 18C. This causes the adsorbent container 13C to perform a cooling process. In the step of cooling the adsorbent container 13C, the compressed air does not flow into the adsorbent container 13C, and the adsorbent is naturally cooled.

制御装置19は、タイマを用いて、吸着剤容器13Cの冷却工程の時間が所定時間に達したと判定したときに、切替弁14C,15C,17Cを閉状態に制御し、切替弁18Cを開状態に制御して吸着剤容器13Cの他方側をドレンセパレータ22の下流側に連通し、切替弁16Cを開状態に制御して吸着剤容器13Cの一方側を供給流路23の上流側にオリフィス24Cを介し連通する(図2参照)。これにより、吸着剤容器13Aの吸着工程と吸着剤容器13Bの再生工程を行わせたまま、吸着剤容器13Cの冷却工程を吸着準備工程に切替える。吸着剤容器13Cの吸着準備工程では、オリフィス24Cによって吸着工程と比べて小流量となるように、低温の圧縮空気が吸着剤容器13Cに流れる。 The controller 19 uses a timer to control the switching valves 14C, 15C, and 17C to the closed state and opens the switching valve 18C when it determines that the time for the cooling process of the adsorbent container 13C has reached a predetermined time. state to connect the other side of the adsorbent container 13C to the downstream side of the drain separator 22, and control the switching valve 16C to the open state to open the one side of the adsorbent container 13C to the upstream side of the supply channel 23 orifice. 24C (see FIG. 2). As a result, the cooling step of the adsorbent container 13C is switched to the adsorption preparation step while the adsorption step of the adsorbent container 13A and the regeneration step of the adsorbent container 13B are being performed. In the adsorption preparatory step of the adsorbent container 13C, low-temperature compressed air flows into the adsorbent container 13C through the orifice 24C such that the flow rate is smaller than that in the adsorption step.

制御装置19は、タイマを用いて、吸着剤容器13Cの吸着準備工程の時間が所定時間に達したと判定したときに、切替弁14C,16C,17Cを閉状態に制御し、切替弁18Cを開状態に制御して吸着剤容器13Cの他方側をドレンセパレータ22の下流側に連通し、切替弁15Cを開状態に制御して吸着剤容器13Cの一方側を供給流路23の上流側にオリフィス24Cを介さず連通する(図3参照)。これにより、吸着剤容器13Cの吸着準備工程を吸着工程に切替える。これと同時に、吸着剤容器13Aの吸着工程を再生工程に切替え、吸着剤容器13Bの再生工程を冷却工程に切替える。これ以降の説明は、省略する。 The control device 19 uses a timer to control the switching valves 14C, 16C, and 17C to the closed state when determining that the time for the adsorption preparation process of the adsorbent container 13C has reached a predetermined time, and closes the switching valve 18C. The other side of the adsorbent container 13C is controlled to the open state to communicate with the downstream side of the drain separator 22, and the switching valve 15C is controlled to the open state to move the one side of the adsorbent container 13C to the upstream side of the supply channel 23. It communicates without going through the orifice 24C (see FIG. 3). As a result, the adsorption preparation process for the adsorbent container 13C is switched to the adsorption process. At the same time, the adsorption process of the adsorbent container 13A is switched to the regeneration process, and the regeneration process of the adsorbent vessel 13B is switched to the cooling process. The explanation after this is omitted.

以上のように本実施形態では、各吸着剤容器の工程を吸着工程、再生工程、冷却工程、及び吸着準備工程に順次切替える。冷却工程を行うことにより、吸着剤を冷却して、その後の吸着工程における吸着剤の吸着能力を高めることができる。特に、冷却工程は圧縮空気が吸着剤容器に流れないため、低温の圧縮空気が吸着剤容器に流れる場合と比べ、吸着剤の吸着能力の回復度を高めることができる。また、冷却工程と吸着工程の間に吸着準備工程が介在することにより、吸着剤容器における圧縮空気の流量変化を抑えて、吸着材の吸着の過渡現象を抑えることができる。その結果、除湿装置2の外部へ供給される圧縮空気の露点温度を低くすると共に安定させることができる。 As described above, in this embodiment, the processes of each adsorbent container are sequentially switched to the adsorption process, the regeneration process, the cooling process, and the adsorption preparation process. By performing the cooling step, the adsorbent can be cooled and the adsorption capacity of the adsorbent in the subsequent adsorption step can be enhanced. In particular, since compressed air does not flow into the adsorbent container in the cooling step, recovery of the adsorption capacity of the adsorbent can be enhanced compared to the case where low-temperature compressed air flows into the adsorbent container. In addition, by interposing the adsorption preparatory step between the cooling step and the adsorption step, it is possible to suppress changes in the flow rate of the compressed air in the adsorbent container, thereby suppressing transient adsorption of the adsorbent. As a result, the dew point temperature of the compressed air supplied to the outside of the dehumidifier 2 can be lowered and stabilized.

なお、第1の実施形態において、除湿装置2は、切替弁14A,14B,14C~18A,18B,18Cを備えた場合を例にとって説明したが、これに限られない。本発明の一変形例を、図5~図7を用いて説明する。なお、本変形例において、第1の実施形態と同等の部分は同一の符号を付し、適宜、説明を省略する。 In the first embodiment, the case where the dehumidifier 2 includes the switching valves 14A, 14B, 14C to 18A, 18B, 18C has been described as an example, but the present invention is not limited to this. A modified example of the present invention will be described with reference to FIGS. 5 to 7. FIG. In addition, in this modified example, the same code|symbol is attached|subjected to the part equivalent to 1st Embodiment, and description is abbreviate|omitted suitably.

図5~図7は、本変形例における圧縮空気供給システムの構成を表す概略図である。図5は、第1の吸着剤容器が吸着工程、第2の吸着剤容器が再生工程、第3の吸着剤容器が冷却工程である状態を示す。図6は、第1の吸着剤容器が吸着工程、第2の吸着剤容器が再生工程、第3の吸着剤容器が吸着準備工程である状態を示す。図7は、第1の吸着剤容器が再生工程、第2の吸着剤容器が冷却工程、第3の吸着剤容器が吸着工程である状態を示す。なお、図5~図7において、切替弁のポートの閉状態を黒塗りで示し、開状態を白抜きで示す。 5 to 7 are schematic diagrams showing the configuration of the compressed air supply system in this modified example. FIG. 5 shows the first adsorbent vessel in the adsorption step, the second adsorbent vessel in the regeneration step, and the third adsorbent vessel in the cooling step. FIG. 6 shows the first adsorbent vessel in the adsorption process, the second adsorbent vessel in the regeneration process, and the third adsorbent vessel in the adsorption preparation process. FIG. 7 shows the first sorbent vessel in the regeneration step, the second sorbent vessel in the cooling step, and the third sorbent vessel in the adsorption step. In FIGS. 5 to 7, the closed state of the switching valve port is shown in black, and the open state is shown in white.

本変形例では、除湿装置2は、切替弁(開閉弁)14A,15Aの代わりに、吸着剤容器13Aの一方側を加熱器20の下流側と供給流路23の上流側のうちの一方に連通する切替弁(三方弁)25Aを備え、切替弁17A,18Aの代わりに、吸着剤容器13Aの他方側を冷却器21の上流側とドレンセパレータ22の下流側のうちの一方に連通する切替弁(三方弁)26Aを備える。また、切替弁(開閉弁)14B,15Bの代わりに、吸着剤容器13Bの一方側を加熱器20の下流側と供給流路23の上流側のうちの一方に連通する切替弁(三方弁)25Bを備え、切替弁17B,18Bの代わりに、吸着剤容器13Bの他方側を冷却器21の上流側とドレンセパレータ22の下流側のうちの一方に連通する切替弁(三方弁)26Bを備える。また、切替弁(開閉弁)14C,15Cの代わりに、吸着剤容器13Cの一方側を加熱器20の下流側と供給流路23の上流側のうちの一方に連通する切替弁(三方弁)25Cを備え、切替弁17C,18Cの代わりに、吸着剤容器13Cの他方側を冷却器21の上流側とドレンセパレータ22の下流側のうちの一方に連通する切替弁(三方弁)26Cを備える。 In this modified example, the dehumidifier 2 has one side of the adsorbent container 13A positioned either downstream of the heater 20 or upstream of the supply channel 23 instead of switching valves (on-off valves) 14A and 15A. A switching valve (three-way valve) 25A that communicates is provided, and instead of the switching valves 17A and 18A, the other side of the adsorbent container 13A is connected to one of the upstream side of the cooler 21 and the downstream side of the drain separator 22. A valve (three-way valve) 26A is provided. Further, instead of the switching valves (on-off valves) 14B and 15B, switching valves (three-way valves) that connect one side of the adsorbent container 13B to one of the downstream side of the heater 20 and the upstream side of the supply channel 23. 25B, and instead of the switching valves 17B and 18B, a switching valve (three-way valve) 26B that connects the other side of the adsorbent container 13B to one of the upstream side of the cooler 21 and the downstream side of the drain separator 22 is provided. . Further, instead of the switching valves (on-off valves) 14C and 15C, a switching valve (three-way valve) that communicates one side of the adsorbent container 13C with one of the downstream side of the heater 20 and the upstream side of the supply channel 23. 25C, and instead of the switching valves 17C and 18C, a switching valve (three-way valve) 26C that connects the other side of the adsorbent container 13C to one of the upstream side of the cooler 21 and the downstream side of the drain separator 22 is provided. .

切替弁16Aは、切替弁25Aと供給流路23の上流側を接続する流路に配置され、オリフィス24Aは、切替弁16Aをバイパスする流路に配置されている。切替弁16Bは、切替弁25Bと供給流路23の上流側を接続する流路に配置され、オリフィス24Bは、切替弁16Bをバイパスする流路に配置されている。切替弁16Cは、切替弁25Cと供給流路23の上流側を接続する流路に配置され、オリフィス24Cは、切替弁16Cをバイパスする流路に配置されている。 16 A of switching valves are arrange|positioned at the flow path which connects 25 A of switching valves, and the upstream of the supply flow path 23, and the orifice 24A is arrange|positioned at the flow path which bypasses 16 A of switching valves. The switching valve 16B is arranged in a channel that connects the upstream side of the switching valve 25B and the supply channel 23, and the orifice 24B is arranged in a channel that bypasses the switching valve 16B. 16 C of switching valves are arrange|positioned at the flow path which connects 25 C of switching valves, and the upstream of the supply flow path 23, and the orifice 24C is arrange|positioned at the flow path which bypasses 16 C of switching valves.

例えば図5で示すように、制御装置19は、吸着剤容器13Bの制御として、切替弁16Bを閉状態に制御し、切替弁25Bを制御して吸着剤容器13Bの一方側を加熱器20の下流側に連通し、切替弁26Bを制御して吸着剤容器13Bの他方側を冷却器21の上流側に連通する。これにより、吸着剤容器13Bに再生工程を行わせる。 For example, as shown in FIG. 5, the control device 19 controls the switching valve 16B to close the adsorbent container 13B and controls the switching valve 25B to switch one side of the adsorbent container 13B to the heater 20. The other side of the adsorbent container 13B is communicated with the upstream side of the cooler 21 by controlling the switching valve 26B. This causes the adsorbent container 13B to perform the regeneration step.

制御装置19は、上述した吸着剤容器13Bの制御と同時に、吸着剤容器13Aの制御として、切替弁26Aを制御して吸着剤容器13Aの他方側をドレンセパレータ22の下流側に連通し、切替弁25Aを制御して吸着剤容器13Aの一方側を供給流路23の上流側に連通し、切替弁16Aを開状態に制御する。これにより、吸着剤容器13Aに吸着工程を行わせる。 At the same time as controlling the adsorbent container 13B described above, the control device 19 controls the switching valve 26A to communicate the other side of the adsorbent container 13A to the downstream side of the drain separator 22 as the control of the adsorbent container 13A. One side of the adsorbent container 13A is communicated with the upstream side of the supply flow path 23 by controlling the valve 25A, and the switching valve 16A is controlled to be open. This causes the adsorbent container 13A to perform the adsorption step.

制御装置19は、上述した吸着剤容器13A,13Bの制御と同時に、吸着剤容器13Cの制御として、切替弁25Cを制御して吸着剤容器13Aの一方側を供給流路23の上流側に連通し、切替弁26Cを制御して吸着剤容器13Cの他方側を冷却器21の上流側に連通し、切替弁16Cを閉状態に制御する。これにより、吸着剤容器13Cに冷却工程を行わせる。吸着剤容器13Cの冷却工程では、圧縮空気が吸着剤容器13Cに流れないで、吸着剤が自然冷却される。 At the same time as controlling the adsorbent containers 13A and 13B described above, the control device 19 controls the switching valve 25C as control of the adsorbent container 13C to connect one side of the adsorbent container 13A to the upstream side of the supply channel 23. Then, the switching valve 26C is controlled to connect the other side of the adsorbent container 13C to the upstream side of the cooler 21, and the switching valve 16C is controlled to be closed. This causes the adsorbent container 13C to perform a cooling step. In the step of cooling the adsorbent container 13C, the compressed air does not flow into the adsorbent container 13C, and the adsorbent is naturally cooled.

制御装置19は、タイマを用いて、吸着剤容器13Cの冷却工程の時間が所定時間に達したと判定したときに、切替弁26Cを制御して吸着剤容器13Cの他方側をドレンセパレータ22の下流側に連通し、切替弁25Cを制御して吸着剤容器13Cの一方側を供給流路23の上流側に連通し、切替弁16Cを閉状態に制御する(図6参照)。これにより、吸着剤容器13Aの吸着工程と吸着剤容器13Bの再生工程を行わせたまま、吸着剤容器13Cの冷却工程を吸着準備工程に切替える。吸着剤容器13Cの吸着準備工程では、オリフィス24Cによって吸着工程と比べて小流量となるように、低温の圧縮空気が吸着剤容器13Cに流れる。 The control device 19 uses a timer to control the switching valve 26C to switch the other side of the adsorbent container 13C to the drain separator 22 when it determines that the time for the cooling process of the adsorbent container 13C has reached a predetermined time. By controlling the switching valve 25C, one side of the adsorbent container 13C is communicated with the upstream side of the supply channel 23, and the switching valve 16C is controlled to be closed (see FIG. 6). As a result, the cooling step of the adsorbent container 13C is switched to the adsorption preparation step while the adsorption step of the adsorbent container 13A and the regeneration step of the adsorbent container 13B are being performed. In the adsorption preparatory step of the adsorbent container 13C, low-temperature compressed air flows into the adsorbent container 13C through the orifice 24C such that the flow rate is smaller than that in the adsorption step.

制御装置19は、タイマを用いて、吸着剤容器13Cの吸着準備工程の時間が所定時間に達したと判定した場合に、切替弁26Cを制御して吸着剤容器13Cの他方側をドレンセパレータ22の下流側に連通し、切替弁25Cを制御して吸着剤容器13Cの一方側を供給流路23の上流側に連通し、切替弁16Cを開状態に制御する(図7参照)。これにより、吸着剤容器13Cの吸着準備工程を吸着工程に切替える。これと同時に、吸着剤容器13Aの吸着工程を再生工程に切替え、吸着剤容器13Bの再生工程を冷却工程に切替える。これ以降の説明は、省略する。 The control device 19 uses a timer to control the switching valve 26C to switch the other side of the adsorbent container 13C to the drain separator 22 when it is determined that the adsorption preparation process time of the adsorbent container 13C has reached a predetermined time. , one side of the adsorbent container 13C is communicated with the upstream side of the supply channel 23 by controlling the switching valve 25C, and the switching valve 16C is controlled to be open (see FIG. 7). As a result, the adsorption preparation process for the adsorbent container 13C is switched to the adsorption process. At the same time, the adsorption process of the adsorbent container 13A is switched to the regeneration process, and the regeneration process of the adsorbent vessel 13B is switched to the cooling process. The explanation after this is omitted.

以上のように構成された本変形例においても、第1の実施形態と同様の効果を得ることができる。本変形例においては、第1の実施形態と比べ、切替弁の数を減らすことができ、信頼性やメンテナンス性を向上させることができる。 The same effects as those of the first embodiment can be obtained in this modified example configured as described above. Compared to the first embodiment, this modification can reduce the number of switching valves and improve reliability and maintainability.

なお、他の変形例として、除湿装置2は、切替弁25A,16A及びオリフィス24Aの代わりに、吸着剤容器13Aの一方側を加熱器20の下流側と供給流路23の上流側のうちの一方に連通すると共に流量を可変可能な切替弁(三方調節弁)を備えてもよい。また、切替弁25B,16B及びオリフィス24Bの代わりに、吸着剤容器13Bの一方側を加熱器20の下流側と供給流路23の上流側のうちの一方に連通すると共に流量を可変可能な切替弁(三方調節弁)を備えてもよい。また、切替弁25C,16C及びオリフィス24Cの代わりに、吸着剤容器13Cの一方側を加熱器20の下流側と供給流路23の上流側のうちの一方に連通すると共に流量を可変可能な切替弁(三方調節弁)を備えてもよい。 As another modified example, the dehumidifier 2 is arranged such that one side of the adsorbent container 13A is positioned either downstream of the heater 20 or upstream of the supply channel 23 instead of the switching valves 25A and 16A and the orifice 24A. A switching valve (three-way control valve) that communicates in one direction and is capable of varying the flow rate may be provided. Further, instead of the switching valves 25B and 16B and the orifice 24B, one side of the adsorbent container 13B is communicated with one of the downstream side of the heater 20 and the upstream side of the supply flow path 23, and a switching valve that can vary the flow rate. A valve (three-way control valve) may be provided. Further, instead of the switching valves 25C and 16C and the orifice 24C, one side of the adsorbent container 13C is communicated with one of the downstream side of the heater 20 and the upstream side of the supply flow path 23, and the flow rate is variable. A valve (three-way control valve) may be provided.

また、第1の実施形態及びその変形例において、制御装置19は、タイマを用いて、例えば吸着剤容器13Cの冷却工程の時間が所定時間に達したと判定したときに、吸着剤容器13Cの冷却工程を吸着準備工程に切替える場合を例にとって説明したが、これに限られない。除湿装置2は、吸着剤容器13A,13B,13C内の温度(詳細には、圧縮空気、吸着剤、又は吸着剤容器の温度)をそれぞれ検出する温度センサ27A,27B,27C(図1~図3又は図5~図7にて点線で示す)を備えてもよい。制御装置19は、温度センサ27A,27B,27Cのうちのいずれかで検出された冷却工程の吸着剤容器内の温度が所定の閾値以下となるときに、吸着剤容器の冷却工程を吸着準備工程に切替えてもよい。 Further, in the first embodiment and its modification, the control device 19 uses a timer to determine, for example, that the time for the cooling process of the adsorbent container 13C has reached a predetermined time. Although the case where the cooling process is switched to the adsorption preparation process has been described as an example, the present invention is not limited to this. The dehumidifying device 2 includes temperature sensors 27A, 27B, and 27C (FIGS. 1 to 4) that respectively detect the temperatures in the adsorbent containers 13A, 13B, and 13C (specifically, the temperature of the compressed air, the adsorbent, or the adsorbent containers). 3 or indicated by dotted lines in FIGS. 5-7). When the temperature inside the adsorbent container in the cooling step detected by any one of the temperature sensors 27A, 27B, and 27C becomes equal to or lower than a predetermined threshold value, the controller 19 changes the adsorbent container cooling step to the adsorption preparation step. You can switch to

また、圧縮空気中の湿分量を検出する湿分センサ30(図1~図3又は図5~図7にて点線で示す)を供給経路23に設けてもよい。制御装置19は、湿分量センサ30で検出された圧縮空気中の湿分量が所定の閾値以上となるときに、吸着剤容器の工程を次の工程へ切替えてもよい。例えば、吸着剤容器13Aが吸着工程中、吸着剤容器13Bが再生工程中、吸着剤容器13Cが冷却工程中だった場合は、吸着剤容器13Cを次の工程である吸着準備工程へ切替える。また、吸着剤容器13Aが吸着工程中、吸着剤容器13Bが再生工程中、吸着剤容器13Cが吸着準備工程中だった場合は、次の工程である再生工程、冷却工程、吸着工程へとそれぞれ切替える。これにより、必要な露点の圧縮空気をより安定的に供給することができる。 Also, a moisture sensor 30 (indicated by a dotted line in FIGS. 1 to 3 or 5 to 7) for detecting the amount of moisture in the compressed air may be provided in the supply path 23. FIG. The control device 19 may switch the process of the adsorbent container to the next process when the amount of moisture in the compressed air detected by the moisture amount sensor 30 reaches or exceeds a predetermined threshold. For example, when the adsorbent container 13A is in the adsorption step, the adsorbent container 13B is in the regeneration step, and the adsorbent container 13C is in the cooling step, the adsorbent container 13C is switched to the adsorption preparation step which is the next step. Further, when the adsorbent container 13A is in the adsorption process, the adsorbent container 13B is in the regeneration process, and the adsorbent container 13C is in the adsorption preparation process, the next processes, namely the regeneration process, the cooling process, and the adsorption process, are performed. switch. Thereby, the compressed air with the required dew point can be more stably supplied.

また、第1の実施形態及びその変形例において、除湿装置2は、3つの吸着剤容器13A,13B,13Cを備えた場合を例にとって説明したが、これに限られず、4つ以上の吸着剤容器を備えてもよい。 In addition, in the first embodiment and its modification, the dehumidifier 2 has been described as an example in which the three adsorbent containers 13A, 13B, and 13C are provided. A container may be provided.

本発明の第2の実施形態を、図8~図12を用いて説明する。なお、本実施形態において、第1の実施形態と同等の部分は同一の符号を付し、適宜、説明を省略する。 A second embodiment of the present invention will be described with reference to FIGS. 8 to 12. FIG. In addition, in this embodiment, the same code|symbol is attached|subjected to the part equivalent to 1st Embodiment, and description is abbreviate|omitted suitably.

図8~図11は、本実施形態における圧縮空気供給システムの構成を表す概略図であり、図12は、本実施形態における除湿装置の吸着剤容器の工程の推移を表す図である。図8は、第1の吸着剤容器が吸着工程、第2の吸着剤容器が再生工程である状態を示す。図9は、第1の吸着剤容器が吸着工程、第2の吸着剤容器が冷却工程である状態を示す。図10は、第1の吸着剤容器が吸着工程、第2の吸着剤容器が吸着準備工程である状態を示す。図11は、第1の吸着剤容器が再生工程、第2の吸着剤容器が吸着工程である状態を示す。なお、図8~図11において、切替弁の閉状態を黒塗りで示し、開状態を白抜きで示す。 8 to 11 are schematic diagrams showing the configuration of the compressed air supply system in this embodiment, and FIG. 12 is a diagram showing the process transition of the adsorbent container of the dehumidifier in this embodiment. FIG. 8 shows the first adsorbent vessel in the adsorption step and the second adsorbent vessel in the regeneration step. FIG. 9 shows the first adsorbent vessel in the adsorption step and the second adsorbent vessel in the cooling step. FIG. 10 shows a state in which the first adsorbent container is in the adsorption step and the second adsorbent container is in the adsorption preparatory step. FIG. 11 shows the first adsorbent vessel in the regeneration step and the second adsorbent vessel in the adsorption step. 8 to 11, the closed state of the switching valve is shown in black, and the open state is shown in white.

本実施形態では、除湿装置2は、圧縮空気中の水分を吸着する吸着剤を内包した2つの吸着剤容器13A,13Bと、吸着剤容器13Aの一方側(図8~図11の上側)に設けられた切替弁14A,15A,16A(第1切替弁)と、吸着剤容器13Aの他方側(図8~図11の下側)に設けられた切替弁17A,18A(第2切替弁)と、吸着剤容器13Bの一方側(図8~図11の上側)に設けられた切替弁14B,15B,16B(第1切替弁)と、吸着剤容器13Bの他方側(図8~図11の下側)に設けられた切替弁17B,18B(第2切替弁)と、吸着剤容器13A,13Bをバイパスするバイパス流路28と、バイパス流路28に設けられたバイパス弁29と、切替弁14A,14B~18A,18B及びバイパス弁29を制御することにより、各吸着剤容器の工程を吸着工程、再生工程、冷却工程、及び吸着準備工程に順次切替える制御装置19とを備える。 In this embodiment, the dehumidifier 2 includes two adsorbent containers 13A and 13B containing an adsorbent that adsorbs moisture in compressed air, and one side of the adsorbent container 13A (upper side in FIGS. 8 to 11). Switching valves 14A, 15A, 16A (first switching valves) provided, and switching valves 17A, 18A (second switching valves) provided on the other side of the adsorbent container 13A (lower side in FIGS. 8 to 11) , switching valves 14B, 15B, and 16B (first switching valves) provided on one side of the adsorbent container 13B (the upper side in FIGS. 8 to 11) and the other side of the adsorbent container 13B (FIGS. 8 to 11 switching valves 17B and 18B (second switching valve) provided on the lower side of the container), a bypass flow path 28 that bypasses the adsorbent containers 13A and 13B, a bypass valve 29 provided in the bypass flow path 28, and a switching A control device 19 is provided for sequentially switching the process of each adsorbent vessel to an adsorption process, a regeneration process, a cooling process, and an adsorption preparation process by controlling the valves 14A, 14B to 18A, 18B and a bypass valve 29.

制御装置19は、上述した通り、切替弁14A,14B~18A,18B及びバイパス弁29を制御することにより、各吸着剤容器の工程を吸着工程、再生工程、冷却工程、及び吸着準備工程に順次切替える。このとき、図12で示すように、吸着剤容器13A,13Bのうちの一方の吸着剤容器に吸着工程を行わせて、圧縮空気の除湿を連続的に行わせる。また、他方の吸着剤容器に再生工程を行わせて、吸着剤の吸着能力を回復させ、更に冷却工程及び吸着準備工程を行わせるようになっている。その詳細を説明する。 As described above, the control device 19 controls the switching valves 14A, 14B to 18A, 18B and the bypass valve 29 so that the process of each adsorbent container is sequentially changed to the adsorption process, the regeneration process, the cooling process, and the adsorption preparation process. switch. At this time, as shown in FIG. 12, one of the adsorbent containers 13A and 13B is caused to perform the adsorption step to continuously dehumidify the compressed air. In addition, the other adsorbent container is caused to undergo a regeneration step to recover the adsorption capacity of the adsorbent, and further undergo a cooling step and an adsorption preparatory step. The details will be explained.

例えば図8で示すように、制御装置19は、吸着剤容器13Bの制御として、バイパス弁29を閉状態に制御し、切替弁15B,16B,18Bを閉状態に制御し、切替弁14Bを開状態に制御して吸着剤容器13Bの一方側を加熱器20の下流側に連通し、切替弁17Bを開状態に制御して吸着剤容器13Bの他方側を冷却器21の上流側に連通する。これにより、吸着剤容器13Bに再生工程を行わせる。 For example, as shown in FIG. 8, the controller 19 controls the adsorbent container 13B to close the bypass valve 29, close the switching valves 15B, 16B, and 18B, and open the switching valve 14B. state to connect one side of the adsorbent container 13B to the downstream side of the heater 20, and control the switching valve 17B to the open state to connect the other side of the adsorbent container 13B to the upstream side of the cooler 21. . This causes the adsorbent container 13B to perform the regeneration step.

制御装置19は、上述した吸着剤容器13Bの制御と同時に、吸着剤容器13Aの制御として、切替弁14A,16A,17Aを閉状態に制御し、切替弁18Aを開状態に制御して吸着剤容器13Aの他方側をドレンセパレータ22の下流側に連通し、切替弁15Aを開状態に制御して吸着剤容器13Aの一方側を供給流路23の上流側に連通する。これにより、吸着剤容器13Aに吸着工程を行わせる。 At the same time as controlling the adsorbent container 13B described above, the controller 19 controls the switching valves 14A, 16A, and 17A to close and the switching valve 18A to open to control the adsorbent container 13A. The other side of the container 13A is communicated with the downstream side of the drain separator 22, and the switching valve 15A is controlled to be open to communicate the one side of the adsorbent container 13A with the upstream side of the supply channel 23. This causes the adsorbent container 13A to perform the adsorption step.

制御装置19は、タイマを用いて、吸着剤容器13Bの再生工程の時間が所定時間に達したと判定したときに、バイパス弁29を開状態に制御し、切替弁14B~18Bを閉状態に制御する(図9参照)。これにより、吸着剤容器13Aの吸着工程を行わせたまま、吸着剤容器13Bの再生工程を冷却工程に切替える。吸着剤容器13Bの冷却工程では、圧縮空気が吸着剤容器13Bに流れないで、吸着剤が自然冷却される。なお、加熱器20からの圧縮空気は、バイパス流路28を介し冷却器21へ供給される。 The control device 19 uses a timer to open the bypass valve 29 and close the switching valves 14B to 18B when it is determined that the time for the regeneration process of the adsorbent container 13B has reached a predetermined time. control (see FIG. 9). As a result, the regeneration process of the adsorbent container 13B is switched to the cooling process while the adsorption process of the adsorbent container 13A is being performed. In the step of cooling the adsorbent container 13B, the compressed air does not flow into the adsorbent container 13B, and the adsorbent is naturally cooled. Compressed air from the heater 20 is supplied to the cooler 21 through the bypass flow path 28 .

制御装置19は、タイマを用いて、吸着剤容器13Bの冷却工程の時間が所定時間に達したと判定したときに、バイパス弁29を開状態に制御し、切替弁14B,15B,17Bを閉状態に制御し、切替弁18Bを開状態に制御して吸着剤容器13Bの他方側をドレンセパレータ22の下流側に連通し、切替弁16Bを開状態に制御して吸着剤容器13Bの一方側を供給流路23の上流側にオリフィス24Bを介し連通する(図10参照)。これにより、吸着剤容器13Aの吸着工程を行わせたまま、吸着剤容器13Bの冷却工程を吸着準備工程に切替える。吸着剤容器13Bの吸着準備工程では、オリフィス24Bによって吸着工程と比べて小流量となるように、低温の圧縮空気が吸着剤容器13Bに流れる。 The controller 19 uses a timer to open the bypass valve 29 and close the switching valves 14B, 15B, and 17B when it determines that the time for the cooling process of the adsorbent container 13B has reached a predetermined time. , the switching valve 18B is controlled to open to communicate the other side of the adsorbent container 13B with the downstream side of the drain separator 22, and the switching valve 16B is controlled to open to the one side of the adsorbent container 13B. communicates with the upstream side of the supply channel 23 via an orifice 24B (see FIG. 10). As a result, the cooling process of the adsorbent container 13B is switched to the adsorption preparation process while the adsorption process of the adsorbent container 13A is being performed. In the adsorption preparatory step of the adsorbent container 13B, the orifice 24B causes low-temperature compressed air to flow into the adsorbent container 13B so that the flow rate is smaller than that in the adsorption step.

制御装置19は、タイマを用いて、吸着剤容器13Bの吸着準備工程の時間が所定時間に達したと判定したときに、切替弁14B,16B,17Bを閉状態に制御し、切替弁18Bを開状態に制御して吸着剤容器13Bの他方側をドレンセパレータ22の下流側に連通し、切替弁15Bを開状態に制御して吸着剤容器13Bの一方側を供給流路23の上流側に連通する(図11参照)。これにより、吸着剤容器13Bの吸着準備工程を吸着工程に切替える。これと同時に、バイパス弁29を閉状態に制御し、切替弁15A,16A,18Aを閉状態に制御し、切替弁14Aを開状態に制御して吸着剤容器13Aの一方側を加熱器20の下流側に連通し、切替弁17Aを開状態に制御して吸着剤容器13Aの他方側を冷却器21の上流側に連通する。これにより、吸着剤容器13Aの吸着工程を再生工程に切替える。これ以降の説明は、省略する。 The controller 19 uses a timer to control the switching valves 14B, 16B, and 17B to the closed state when it determines that the time for the adsorption preparation process of the adsorbent container 13B has reached a predetermined time, and closes the switching valve 18B. The other side of the adsorbent container 13B is controlled to the open state to communicate with the downstream side of the drain separator 22, and the switching valve 15B is controlled to the open state to move the one side of the adsorbent container 13B to the upstream side of the supply channel 23. Communicate (see FIG. 11). As a result, the adsorption preparation process for the adsorbent container 13B is switched to the adsorption process. At the same time, the bypass valve 29 is controlled to close, the switching valves 15A, 16A and 18A are controlled to be closed, and the switching valve 14A is controlled to be open so that one side of the adsorbent container 13A is moved from the heater 20. The other side of the adsorbent container 13A is communicated with the upstream side of the cooler 21 by controlling the switching valve 17A to be open. As a result, the adsorption process of the adsorbent container 13A is switched to the regeneration process. The explanation after this is omitted.

以上のように本実施形態では、各吸着剤容器の工程を吸着工程、再生工程、冷却工程、及び吸着準備工程に順次切替える。冷却工程を行うことにより、吸着剤を冷却して、その後の吸着工程における吸着剤の吸着能力を高めることができる。特に、冷却工程は圧縮空気が吸着剤容器に流れないため、低温の圧縮空気が吸着剤容器に流れる場合と比べ、吸着剤の吸着能力の回復度を高めることができる。また、冷却工程と吸着工程の間に吸着準備工程が介在することにより、吸着剤容器における圧縮空気の流量変化を抑えて、吸着材の吸着の過渡現象を抑えることができる。その結果、除湿装置2の外部へ供給される圧縮空気の露点温度を低くすると共に安定させることができる。 As described above, in this embodiment, the processes of each adsorbent container are sequentially switched to the adsorption process, the regeneration process, the cooling process, and the adsorption preparation process. By performing the cooling step, the adsorbent can be cooled and the adsorption capacity of the adsorbent in the subsequent adsorption step can be enhanced. In particular, since compressed air does not flow into the adsorbent container in the cooling step, recovery of the adsorption capacity of the adsorbent can be enhanced compared to the case where low-temperature compressed air flows into the adsorbent container. In addition, by interposing the adsorption preparatory step between the cooling step and the adsorption step, it is possible to suppress changes in the flow rate of the compressed air in the adsorbent container, thereby suppressing transient adsorption of the adsorbent. As a result, the dew point temperature of the compressed air supplied to the outside of the dehumidifier 2 can be lowered and stabilized.

なお、第2の実施形態において、除湿装置2は、切替弁14A,14B~18A,18Bを備えた場合を例にとって説明したが、これに限られない。一変形例として、除湿装置2は、切替弁(開閉弁)14A,15Aの代わりに、吸着剤容器13Aの一方側を加熱器20の下流側と供給流路23の上流側のうちの一方に連通する切替弁(三方弁)25Aを備え、切替弁17A,18Aの代わりに、吸着剤容器13Aの他方側を冷却器21の上流側とドレンセパレータ22の下流側のうちの一方に連通する切替弁(三方弁)26Aを備えてもよい。また、切替弁(開閉弁)14B,15Bの代わりに、吸着剤容器13Bの一方側を加熱器20の下流側と供給流路23の上流側のうちの一方に連通する切替弁(三方弁)25Bを備え、切替弁17B,18Bの代わりに、吸着剤容器13Bの他方側を冷却器21の上流側とドレンセパレータ22の下流側のうちの一方に連通する切替弁(三方弁)26Bを備えてもよい。 In the second embodiment, the case where the dehumidifier 2 includes the switching valves 14A, 14B to 18A, 18B has been described as an example, but the present invention is not limited to this. As a modified example, the dehumidifier 2 is arranged such that one side of the adsorbent container 13A is positioned either downstream of the heater 20 or upstream of the supply channel 23 instead of switching valves (on-off valves) 14A and 15A. A switching valve (three-way valve) 25A that communicates is provided, and instead of the switching valves 17A and 18A, the other side of the adsorbent container 13A is connected to one of the upstream side of the cooler 21 and the downstream side of the drain separator 22. A valve (three-way valve) 26A may be provided. Further, instead of the switching valves (on-off valves) 14B and 15B, switching valves (three-way valves) that connect one side of the adsorbent container 13B to one of the downstream side of the heater 20 and the upstream side of the supply channel 23. 25B, and instead of the switching valves 17B and 18B, a switching valve (three-way valve) 26B that connects the other side of the adsorbent container 13B to one of the upstream side of the cooler 21 and the downstream side of the drain separator 22 is provided. may

また、他の変形例として、除湿装置2は、切替弁25A,16A及びオリフィス24Aの代わりに、吸着剤容器13Aの一方側を加熱器20の下流側と供給流路23の上流側のうちの一方に連通すると共に流量を可変可能な切替弁(三方調節弁)を備えてもよい。また、切替弁25B,16B及びオリフィス24Bの代わりに、吸着剤容器13Bの一方側を加熱器20の下流側と供給流路23の上流側のうちの一方に連通すると共に流量を可変可能な切替弁(三方調節弁)を備えてもよい。 As another modification, the dehumidifying device 2 is arranged such that one side of the adsorbent container 13A is positioned either downstream of the heater 20 or upstream of the supply channel 23 instead of the switching valves 25A and 16A and the orifice 24A. A switching valve (three-way control valve) that communicates in one direction and is capable of varying the flow rate may be provided. Further, instead of the switching valves 25B and 16B and the orifice 24B, one side of the adsorbent container 13B is communicated with one of the downstream side of the heater 20 and the upstream side of the supply flow path 23, and a switching valve that can vary the flow rate. A valve (three-way control valve) may be provided.

また、第2の実施形態及びその変形例において、制御装置19は、タイマを用いて、例えば吸着剤容器13Bの冷却工程の時間が所定時間に達したと判定したときに、吸着剤容器13Bの冷却工程を吸着準備工程に切替える場合を例にとって説明したが、これに限られない。除湿装置2は、吸着剤容器13A,13B内の温度をそれぞれ検出する温度センサ27A,27B(図8~図11にて点線で示す)を備えてもよい。制御装置19は、温度センサ27A,27Bのうちのいずれかで検出された冷却工程の吸着剤容器内の温度が所定の閾値以下となるときに、吸着剤容器の冷却工程を吸着準備工程に切替えてもよい。 In addition, in the second embodiment and its modification, the control device 19 uses a timer to determine, for example, that the time for the cooling process of the adsorbent container 13B has reached a predetermined time. Although the case where the cooling process is switched to the adsorption preparation process has been described as an example, the present invention is not limited to this. The dehumidifying device 2 may include temperature sensors 27A and 27B (indicated by dotted lines in FIGS. 8 to 11) that detect temperatures in the adsorbent containers 13A and 13B, respectively. The control device 19 switches the cooling process of the adsorbent container to the adsorption preparation process when the temperature inside the adsorbent container in the cooling process detected by one of the temperature sensors 27A and 27B becomes equal to or lower than a predetermined threshold value. may

また、圧縮空気中の湿分量を検出する湿分センサ30(図8~図11にて点線で示す)を供給経路23に設けてもよい。制御装置19は、湿分センサ30で検出された圧縮空気中の湿分量が所定の閾値以上となるときに、吸着剤容器の工程を次の工程へ切替えてもよい。例えば、吸着剤容器13Aが吸着工程中、吸着剤容器13Bが再生工程中だった場合は、吸着剤容器13Bを次の工程である冷却工程へ切替える。また、吸着剤容器13Aが吸着工程中、吸着剤容器13Bが冷却工程中だった場合は、吸着剤容器13Bを次の工程である吸着準備工程へ切替える。また、吸着剤容器13Aが吸着工程中、吸着剤容器13Bが吸着準備工程中だった場合は、吸着剤容器13Aを再生工程へ、吸着剤容器13Bを吸着工程へ切替える。これにより、必要な露点の圧縮空気をより安定的に供給することができる。 Also, a moisture sensor 30 (indicated by dotted lines in FIGS. 8 to 11) for detecting the amount of moisture in the compressed air may be provided in the supply path 23. FIG. The control device 19 may switch the process of the adsorbent container to the next process when the amount of moisture in the compressed air detected by the moisture sensor 30 reaches or exceeds a predetermined threshold value. For example, when the adsorbent container 13A is in the adsorption step and the adsorbent container 13B is in the regeneration step, the adsorbent container 13B is switched to the cooling step which is the next step. Further, when the adsorbent container 13A is in the adsorption step and the adsorbent container 13B is in the cooling step, the adsorbent container 13B is switched to the adsorption preparation step which is the next step. Further, when the adsorbent container 13A is in the adsorption step and the adsorbent container 13B is in the adsorption preparation step, the adsorbent container 13A is switched to the regeneration step and the adsorbent container 13B is switched to the adsorption step. Thereby, the compressed air with the required dew point can be more stably supplied.

また、第2の実施形態及びその変形例において、除湿装置2は、2つの吸着剤容器13A,13Bを備えた場合を例にとって説明したが、これに限られず、3つ以上の吸着剤容器を備えてもよい。 In addition, in the second embodiment and its modification, the dehumidifier 2 has been described as an example in which the two adsorbent containers 13A and 13B are provided. You may prepare.

2…除湿装置、13A,13B,13C…吸着剤容器、14A,14B,14C…切替弁(第1切替弁)、15A,15B,15C…切替弁(第1切替弁)、16A,16B,16C…切替弁(第1切替弁)、17A,17B,17C…切替弁(第2切替弁)、18A,18B,18C…切替弁(第2切替弁)、19…制御装置、20…加熱器、21…冷却器、22…ドレンセパレータ、23…供給流路、25A,25B,25C…切替弁(第1切替弁)、26A,26B,26C…切替弁(第2切替弁)、27A,27B,27C…温度センサ、28…バイパス流路、29…バイパス弁、30…湿分センサ 2 Dehumidifier 13A, 13B, 13C Adsorbent container 14A, 14B, 14C Switching valve (first switching valve) 15A, 15B, 15C Switching valve (first switching valve) 16A, 16B, 16C ... switching valve (first switching valve), 17A, 17B, 17C ... switching valve (second switching valve), 18A, 18B, 18C ... switching valve (second switching valve), 19 ... control device, 20 ... heater, 21... cooler, 22... drain separator, 23... supply channel, 25A, 25B, 25C... switching valve (first switching valve), 26A, 26B, 26C... switching valve (second switching valve), 27A, 27B, 27C...Temperature sensor, 28...Bypass flow path, 29...Bypass valve, 30...Moisture sensor

Claims (6)

圧縮空気中の水分を吸着する吸着剤を内包した少なくとも3つの吸着剤容器と、
前記少なくとも3つの吸着剤容器の一方側に設けられた少なくとも3つの第1切替弁と、
前記少なくとも3つの吸着剤容器の他方側に設けられた少なくとも3つの第2切替弁と、
前記第1切替弁及び前記第2切替弁を制御することにより、各吸着剤容器の工程を、低温の圧縮空気が前記吸着剤容器に流れて前記圧縮空気中の水分が前記吸着剤に吸着される吸着工程、高温の圧縮空気が前記吸着剤容器に流れて前記吸着剤から水分が脱離される再生工程、圧縮空気が前記吸着剤容器に流れないで前記吸着剤が自然冷却される冷却工程、及び前記吸着工程と比べて小流量となるように低温の圧縮空気が前記吸着剤容器に流れる吸着準備工程に順次切替える制御装置と、
圧縮機ユニットから供給された圧縮空気を加熱し、前記第1切替弁を介し前記再生工程の前記吸着剤容器へ供給する加熱器と、
前記第2切替弁を介し前記再生工程の前記吸着剤容器から流出した圧縮空気を冷却する冷却器と、
前記冷却器で冷却された圧縮空気から凝縮水を除去し、前記第2切替弁を介し前記吸着工程か前記吸着準備工程の前記吸着剤容器へ前記圧縮空気を供給するドレンセパレータと、
前記第1切替弁を介し前記吸着工程か前記吸着準備工程の前記吸着剤容器から流出した圧縮空気を外部へ供給する供給流路とを備えたことを特徴とする除湿装置。
at least three adsorbent containers containing adsorbents that adsorb moisture in compressed air;
at least three first switching valves provided on one side of the at least three adsorbent containers;
at least three second switching valves provided on the other side of the at least three adsorbent containers;
By controlling the first switching valve and the second switching valve, low-temperature compressed air flows into the adsorbent container and moisture in the compressed air is adsorbed by the adsorbent. a regeneration step in which high-temperature compressed air flows into the adsorbent container to desorb water from the adsorbent; a cooling step in which the adsorbent is naturally cooled without flowing compressed air into the adsorbent container; and a control device that sequentially switches to an adsorption preparation step in which low-temperature compressed air flows into the adsorbent container so that the flow rate is smaller than that in the adsorption step;
a heater that heats compressed air supplied from a compressor unit and supplies the compressed air to the adsorbent container in the regeneration step through the first switching valve;
a cooler that cools the compressed air that has flowed out of the adsorbent container in the regeneration step through the second switching valve;
a drain separator that removes condensed water from the compressed air cooled by the cooler and supplies the compressed air to the adsorbent container in the adsorption step or the adsorption preparation step through the second switching valve;
A dehumidifier, comprising: a supply passage for supplying compressed air flowing out of said adsorbent container in said adsorption step or said adsorption preparation step via said first switching valve to the outside.
請求項1に記載の除湿装置において、
前記制御装置は、第1の吸着剤容器、第2の吸着剤容器、及び第3の吸着剤容器の工程を互いにずらすように制御し、前記第1の吸着剤容器の前記吸着工程と前記第2の吸着剤容器の前記再生工程を行わせている間に、前記第3の吸着剤容器の前記冷却工程と前記吸着準備工程を行わせることを特徴とする除湿装置。
In the dehumidifier according to claim 1,
The control device controls the steps of the first adsorbent container, the second adsorbent container, and the third adsorbent container to be shifted from each other, and the adsorption step of the first adsorbent container and the adsorption step of the third adsorbent container. wherein the cooling step and the adsorption preparatory step of the third adsorbent container are performed while the regeneration step of the second adsorbent container is being performed.
圧縮空気中の水分を吸着する吸着剤を内包した複数の吸着剤容器と、
前記複数の吸着剤容器の一方側に設けられた複数の第1切替弁と、
前記複数の吸着剤容器の他方側に設けられた複数の第2切替弁と、
前記複数の吸着剤容器をバイパスするバイパス流路と、
前記バイパス流路に設けられたバイパス弁と、
前記複数の第1切替弁、前記複数の第2切替弁、及び前記バイパス弁を制御することにより、各吸着剤容器の工程を、低温の圧縮空気が前記吸着剤容器に流れて前記圧縮空気中の水分が前記吸着剤に吸着される吸着工程、高温の圧縮空気が前記吸着剤容器に流れて前記吸着剤から水分が脱離される再生工程、圧縮空気が前記吸着剤容器に流れないで前記吸着剤が自然冷却される冷却工程、及び前記吸着工程と比べて小流量となるように低温の圧縮空気が前記吸着剤容器に流れる吸着準備工程に順次切替える制御装置と、
圧縮機ユニットから供給された圧縮空気を加熱し、前記第1切替弁を介し前記再生工程の前記吸着剤容器へ前記圧縮空気を供給する加熱器と、
前記第2切替弁を介し前記再生工程の前記吸着剤容器から流出した圧縮空気を冷却する冷却器と、
前記冷却器で冷却された圧縮空気から凝縮水を除去し、前記第2切替弁を介し前記吸着工程か前記吸着準備工程の前記吸着剤容器へ前記圧縮空気を供給するドレンセパレータと、
前記第1切替弁を介し前記吸着工程か前記吸着準備工程の前記吸着剤容器から流出した圧縮空気を外部へ供給する供給流路とを備えたことを特徴とする除湿装置。
a plurality of adsorbent containers each containing an adsorbent that adsorbs moisture in compressed air;
a plurality of first switching valves provided on one side of the plurality of adsorbent containers;
a plurality of second switching valves provided on the other side of the plurality of adsorbent containers;
a bypass channel that bypasses the plurality of adsorbent containers;
a bypass valve provided in the bypass flow path;
By controlling the plurality of first switching valves, the plurality of second switching valves, and the bypass valve, the process of each adsorbent container is controlled so that low-temperature compressed air flows into the adsorbent container and enters the compressed air. a regeneration step in which high-temperature compressed air flows into the adsorbent container to desorb moisture from the adsorbent; and a regeneration step in which compressed air does not flow into the adsorbent container and the adsorption a control device that sequentially switches between a cooling step in which the agent is naturally cooled and an adsorption preparation step in which low-temperature compressed air flows into the adsorbent container so that the flow rate is smaller than that in the adsorption step;
a heater that heats compressed air supplied from a compressor unit and supplies the compressed air to the adsorbent container in the regeneration step via the first switching valve;
a cooler that cools the compressed air that has flowed out of the adsorbent container in the regeneration step through the second switching valve;
a drain separator that removes condensed water from the compressed air cooled by the cooler and supplies the compressed air to the adsorbent container in the adsorption step or the adsorption preparation step through the second switching valve;
A dehumidifier, comprising: a supply passage for supplying compressed air flowing out of said adsorbent container in said adsorption step or said adsorption preparation step via said first switching valve to the outside.
請求項1又は3に記載の除湿装置において、
各吸着剤容器内の温度を検出する温度センサを備え、
前記制御装置は、前記温度センサで検出された前記冷却工程の前記吸着剤容器内の温度が所定の閾値以下となるときに、前記吸着剤容器の前記冷却工程を前記吸着準備工程に切替えることを特徴とする除湿装置。
In the dehumidifier according to claim 1 or 3,
Equipped with a temperature sensor that detects the temperature in each adsorbent container,
The control device switches the cooling process of the adsorbent container to the adsorption preparation process when the temperature inside the adsorbent container in the cooling process detected by the temperature sensor becomes equal to or lower than a predetermined threshold. A dehumidifier characterized by:
請求項1又は3に記載の除湿装置において、前記供給経路に圧縮空気の湿分量を検出する湿分センサを備え、
前記制御装置は、前記湿分センサで検出された圧縮空気中の湿分量が所定の閾値以上となるときに、全部又は一部の前記吸着剤容器の工程を切替えることを特徴とする除湿装置。
4. The dehumidifier according to claim 1 or 3, wherein the supply path is provided with a moisture sensor for detecting the amount of moisture in the compressed air,
The dehumidifier, wherein the control device switches all or part of the processes of the adsorbent container when the amount of moisture in the compressed air detected by the moisture sensor reaches or exceeds a predetermined threshold value.
請求項1又は3に記載の除湿装置において、
前記加熱器は、前記圧縮機ユニットのアフタークーラで冷却された圧縮空気を、前記アフタークーラの上流側の圧縮空気との熱交換によって加熱することを特徴とする除湿装置。
In the dehumidifier according to claim 1 or 3,
The dehumidifier, wherein the heater heats the compressed air cooled by the aftercooler of the compressor unit by heat exchange with the compressed air on the upstream side of the aftercooler.
JP2021126269A 2021-07-30 2021-07-30 dehumidifier Pending JP2023020737A (en)

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