JP2002138958A - Air compressor - Google Patents
Air compressorInfo
- Publication number
- JP2002138958A JP2002138958A JP2000334063A JP2000334063A JP2002138958A JP 2002138958 A JP2002138958 A JP 2002138958A JP 2000334063 A JP2000334063 A JP 2000334063A JP 2000334063 A JP2000334063 A JP 2000334063A JP 2002138958 A JP2002138958 A JP 2002138958A
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- Prior art keywords
- compressor
- switching valve
- tank
- pressure
- port
- Prior art date
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、空気圧を利用する
各種の機械・装置に、圧縮空気を供給するための空気圧
縮装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air compressor for supplying compressed air to various machines and devices utilizing air pressure.
【０００２】[0002]
【従来の技術】工場などで高圧の圧縮空気を使用したい
場合、通常は図４(a) に示すように、１台の高昇圧比の
圧縮機51を電動機により作動させ、空気を圧縮して高圧
の圧縮空気を作り出し、タンク52に充填している。１台
の圧縮機51で高圧まで昇圧するためには、圧縮機51を多
段にする必要があり、圧縮機51の構造が複雑となり、大
きな動力を要しコスト高となる欠点がある。しかも、各
種の機械・装置に利用され得る高圧に空気を一気に昇圧
させると、過大の温度の圧縮空気となり、圧縮空気を冷
却しなければならない。2. Description of the Related Art When it is desired to use high-pressure compressed air in a factory or the like, usually, as shown in FIG. 4 (a), one compressor 51 having a high pressure ratio is operated by an electric motor to compress the air. High-pressure compressed air is produced and filled in the tank 52. In order to increase the pressure to a high pressure by one compressor 51, the compressor 51 needs to be provided in multiple stages, and the structure of the compressor 51 becomes complicated, requiring large power and increasing costs. In addition, when the pressure of the air is increased to a high pressure that can be used for various machines and devices, the compressed air becomes excessively hot and the compressed air must be cooled.
【０００３】過大の温度上昇を生じないようにするた
め、図４(b) に示すように、２台の低昇圧比の圧縮機5
5，56を直列に接続し、１段目の圧縮機55で空気を大気
圧から中圧に昇圧させ、２段目の圧縮機56で中圧の圧縮
空気を高圧に昇圧させ、タンク53に充填することが考え
られている。複数の低昇圧比の圧縮機を利用した、空気
の２段圧縮，多段圧縮により空気の温度上昇は減少す
る。しかし、圧縮空気の使用量が少ない場合には、複数
台の圧縮機を必要とすることはコストの上昇をもたらす
こととなる。In order to prevent an excessive rise in temperature, as shown in FIG.
5 and 56 are connected in series, the first stage compressor 55 raises the pressure of the air from atmospheric pressure to medium pressure, and the second stage compressor 56 raises the pressure of the medium pressure air to high pressure. It is contemplated to fill. The temperature rise of the air is reduced by two-stage compression and multi-stage compression of the air using a plurality of compressors having a low boost ratio. However, when the amount of compressed air used is small, the need for a plurality of compressors leads to an increase in cost.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、空気圧縮装
置において、１台の低昇圧比の圧縮機により高圧の圧縮
空気を発生させることを第１課題とし、昇圧の途中の圧
縮空気を取り出して高圧、低圧等の圧縮空気を発生させ
ることを第２課題とする。SUMMARY OF THE INVENTION It is a first object of the present invention to generate high-pressure compressed air by a single compressor having a low boosting ratio in an air compressor. A second object is to generate high-pressure, low-pressure, etc. compressed air.
【０００５】[0005]
【課題を解決するための手段】本発明は、前記課題を達
成するために、低昇圧比の圧縮機により高圧の圧縮空気
を発生させる空気圧縮装置において、１台の低昇圧比の
圧縮機と適宜数の切換弁と複数個のタンクが配管により
連通され、圧縮機の作動と切換弁の切換操作により、相
対的に低い圧力の空気が相対的に高い圧力の空気に順次
に圧縮して昇圧されることを第１構成とする。本発明
は、第１構成において、３ポートの第１切換弁・第２切
換弁及び低圧タンク・高圧タンクがそれぞれ配設され、
第１切換弁・第２切換弁が低圧位置にそれぞれ位置する
とき、大気が圧縮機の吸込ポートに連通されるとともに
圧縮機の吐出ポートが低圧タンクに連通され、第１切換
弁・第２切換弁が高圧位置にそれぞれ位置するとき、低
圧タンクが圧縮機の吸込ポートに連通されるとともに圧
縮機の吐出ポートが高圧タンクに連通されることを第２
構成とする。本発明は、第１構成において、６ポートの
切換弁及び低圧タンク・高圧タンクがそれぞれ配設さ
れ、前記切換弁が低圧位置に位置するとき、大気が圧縮
機の吸込ポートに連通されるとともに圧縮機の吐出ポー
トが低圧タンクに連通され、前記切換弁が高圧位置に位
置するとき、低圧タンクが圧縮機の吸込ポートに連通さ
れるとともに圧縮機の吐出ポートが高圧タンクに連通さ
れることを第３構成とする。本発明は、第１構成におい
て、６ポートの切換弁及び低圧タンク・中圧タンク・高
圧タンクがそれぞれ配設され、前記切換弁が低圧位置に
位置するとき、大気が圧縮機の吸込ポートに連通される
とともに圧縮機の吐出ポートが低圧タンクに連通され、
前記切換弁が中圧位置に位置するとき、低圧タンクが圧
縮機の吸込ポートに連通されるとともに圧縮機の吐出ポ
ートが中圧タンクに連通され、前記切換弁が高圧位置に
位置するとき、中圧タンクが圧縮機の吸込ポートに連通
されるとともに圧縮機の吐出ポートが高圧タンクに連通
されることを第４構成とする。本発明は、第１構成にお
いて、４ポートの第１切換弁・第２切換弁及び第１タン
ク・第２タンクがそれぞれ配設され、第１切換弁が連通
位置に位置し第２切換弁が遮断位置に位置するとき、大
気が圧縮機の吸込ポートに連通されるとともに圧縮機の
吐出ポートが第１タンクに連通され、第１切換弁が遮断
位置に位置し第２切換弁が連通位置に位置するとき、第
１タンクが圧縮機の吸込ポートに連通されるとともに圧
縮機の吐出ポートが第２タンクに連通されることを第５
構成とする。本発明は、第１構成において、４ポートの
第１切換弁〜第 ｎ切換弁及び第１タンク〜第ｎタンク
がそれぞれ配設され、第１切換弁が連通位置に位置し第
２切換弁〜第ｎ切換弁が遮断位置に位置するとき、大気
が圧縮機の吸込ポートに連通されるとともに圧縮機の吐
出ポートが第１タンクに連通され、第２切換弁〜第ｎ切
換弁及び第２タンク〜第ｎタンクについてｎを２から順
次に増加して、第１切換弁〜第ｎ−１切換弁が遮断位置
に位置し第ｎ切換弁が連通位置に位置するとき、第ｎ−
１タンクが圧縮機の吸込ポートに連通されるとともに圧
縮機の吐出ポートが第ｎタンクに連通されることを第６
構成とする。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an air compressor for generating high-pressure compressed air by a low-pressure-ratio compressor. An appropriate number of switching valves and a plurality of tanks are communicated by pipes. By operating the compressor and switching the switching valves, the air having a relatively low pressure is sequentially compressed into the air having a relatively high pressure to increase the pressure. This is referred to as a first configuration. According to the present invention, in the first configuration, a three-port first switching valve / second switching valve and a low-pressure tank / high-pressure tank are provided, respectively.
When the first switching valve and the second switching valve are respectively located at the low pressure position, the atmosphere is communicated with the suction port of the compressor, and the discharge port of the compressor is communicated with the low pressure tank. When the valves are respectively located at the high pressure position, it is required that the low pressure tank is connected to the suction port of the compressor and the discharge port of the compressor is connected to the high pressure tank.
Configuration. According to the present invention, in the first configuration, a 6-port switching valve and a low-pressure tank / high-pressure tank are respectively provided, and when the switching valve is located at the low-pressure position, the atmosphere is communicated with the suction port of the compressor and compressed. When the discharge port of the compressor is connected to the low-pressure tank and the switching valve is located at the high-pressure position, the low-pressure tank is connected to the suction port of the compressor and the discharge port of the compressor is connected to the high-pressure tank. There are three configurations. According to the present invention, in the first configuration, a 6-port switching valve and a low-pressure tank / intermediate-pressure tank / high-pressure tank are respectively disposed, and when the switching valve is located at the low-pressure position, the atmosphere communicates with the suction port of the compressor. And the discharge port of the compressor communicates with the low pressure tank.
When the switching valve is at the medium pressure position, the low pressure tank is communicated with the suction port of the compressor, and the discharge port of the compressor is communicated with the medium pressure tank. A fourth configuration is such that the pressure tank is connected to the suction port of the compressor and the discharge port of the compressor is connected to the high-pressure tank. According to the present invention, in the first configuration, a 4-port first switching valve / second switching valve and a first tank / second tank are respectively disposed, and the first switching valve is located at the communication position and the second switching valve is located at the communication position. When located at the shutoff position, the atmosphere is communicated with the suction port of the compressor, the discharge port of the compressor is communicated with the first tank, the first switching valve is located at the shutoff position, and the second switching valve is located at the communication position. When in position, the first tank communicates with the suction port of the compressor and the discharge port of the compressor communicates with the second tank.
Configuration. According to the present invention, in the first configuration, the four-port first switching valve to the n-th switching valve and the first tank to the n-th tank are respectively disposed, and the first switching valve is located at the communication position and the second switching valve to the n-th switching valve are arranged. When the n-th switching valve is located at the shut-off position, the atmosphere is communicated with the suction port of the compressor, and the discharge port of the compressor is communicated with the first tank, and the second to n-th switching valves and the second tank N is sequentially increased from 2 for the n-th tank, and when the first switching valve to the (n-1) th switching valve are located at the shut-off position and the n-th switching valve is located at the communication position, the n-th switching valve is switched to the n-th switching valve.
It is assumed that the first tank is connected to the suction port of the compressor and the discharge port of the compressor is connected to the n-th tank.
Configuration.
【０００６】[0006]
【発明の実施の形態】図１は、本発明の空気圧縮装置の
実施の形態第１を示す。実施の形態第１では、低昇圧比
の圧縮機が１台、３ポート２位置式切換弁が２個、タン
クが２個用いられている。第１切換弁（第１電磁切換
弁）11及び第２切換弁（第２電磁切換弁）12は、ともに
ポート１〜３を備え、低圧位置Ｉと高圧位置IIとを有し
ている。FIG. 1 shows a first embodiment of an air compressor according to the present invention. In the first embodiment, one compressor with a low boost ratio, two three-port two-position switching valves, and two tanks are used. The first switching valve (first electromagnetic switching valve) 11 and the second switching valve (second electromagnetic switching valve) 12 both have ports 1 to 3 and have a low pressure position I and a high pressure position II.
【０００７】第１切換弁11は、低圧位置Ｉにおいてポー
ト１（大気側ポート）とポート３（圧縮機の吸込側ポー
ト）とが連通されるとともにポート２（低圧タンク側ポ
ート）がブロック（閉鎖）され、高圧位置IIにおいてポ
ート２とポート３とが連通されるとともにポート１がブ
ロックされるように構成されている。第２切換弁12は、
低圧位置Ｉにおいてポート１（圧縮機の吐出側ポート）
とポート２（低圧タンク側ポート）とが連通されるとと
もにポート３（高圧タンク側ポート）がブロックされ、
高圧位置IIにおいてポート１とポート３とが連通される
とともにポート２がブロックされるように構成されてい
る。In the first switching valve 11, the port 1 (atmosphere side port) and the port 3 (suction side port of the compressor) communicate with each other at the low pressure position I, and the port 2 (low pressure tank side port) is blocked (closed). ), The port 2 and the port 3 communicate with each other and the port 1 is blocked at the high pressure position II. The second switching valve 12
Port 1 at low pressure position I (compressor discharge port)
And port 2 (low pressure tank side port) are communicated and port 3 (high pressure tank side port) is blocked,
In the high pressure position II, the port 1 and the port 3 are connected to each other and the port 2 is blocked.
【０００８】第１切換弁11のポート１は配管16によって
大気に連通され、第１切換弁11のポート２は配管20によ
って低圧タンク13に連通され、第１切換弁11のポート３
は配管17によって低昇圧比の圧縮機10の吸込ポートに25
に連通されている。第２切換弁12のポート１は配管18に
よって圧縮機10の吐出ポート26に連通され、第２切換弁
12のポート２は配管19によって低圧タンク13に連通さ
れ、第２切換弁12のポート３は配管22によって高圧タン
ク14に連通されている。The port 1 of the first switching valve 11 is connected to the atmosphere by a pipe 16, the port 2 of the first switching valve 11 is connected to a low-pressure tank 13 by a pipe 20, and the port 3 of the first switching valve 11
Is connected to the suction port of the compressor 10 with a low
Is communicated to. The port 1 of the second switching valve 12 is connected to the discharge port 26 of the compressor 10 by the pipe 18, and the second switching valve 12
The port 2 of 12 is connected to the low pressure tank 13 by a pipe 19, and the port 3 of the second switching valve 12 is connected to the high pressure tank 14 by a pipe 22.
【０００９】配管19と高圧タンク14との間には配管21が
接続され、配管21には配管19（低圧タンク13）から高圧
タンク14の方向の空気の流れのみを許すチェック弁15が
配設されている。低圧タンク13内の低圧の圧縮空気は配
管23を通ってアクチュエータなどへ流出され、高圧タン
ク14内の高圧の圧縮空気は配管24を通ってアクチュエー
タなどへ流出される。低圧タンク13及び高圧タンク14に
は圧力計が配設され、圧縮機10は電動機により作動され
る。[0009] A pipe 21 is connected between the pipe 19 and the high-pressure tank 14, and a check valve 15 that allows only the flow of air from the pipe 19 (the low-pressure tank 13) to the high-pressure tank 14 is provided in the pipe 21. Have been. The low-pressure compressed air in the low-pressure tank 13 flows out to an actuator or the like through a pipe 23, and the high-pressure compressed air in the high-pressure tank 14 flows out to an actuator or the like through a pipe 24. Pressure gauges are provided in the low-pressure tank 13 and the high-pressure tank 14, and the compressor 10 is operated by an electric motor.
【００１０】実施の形態第１の作用について説明する。
第１切換弁11及び第２切換弁12がともに図示の低圧位置
Ｉ（オフ位置）に位置するとき、圧縮機10の作動によ
り、大気が配管16、第１切換弁11のポート１，３、配管
17、吸込ポート25を通って圧縮機10に吸い込まれる。圧
縮機10で１段目の圧縮により昇圧された低圧の圧縮空気
は吐出ポート26、配管18、第２切換弁12のポート１，
２、配管19を通って低圧タンク13に充填される。The first operation of the embodiment will be described.
When the first switching valve 11 and the second switching valve 12 are both located at the illustrated low pressure position I (off position), the operation of the compressor 10 causes the atmosphere to flow through the pipe 16, the ports 1, 3 of the first switching valve 11, Piping
17, is sucked into the compressor 10 through the suction port 25. The low-pressure compressed air pressurized by the first-stage compression in the compressor 10 is supplied to the discharge port 26, the pipe 18, the port 1 of the second switching valve 12,
2. The low pressure tank 13 is filled through the pipe 19.
【００１１】低圧タンク13内の圧縮空気が所定の圧力に
達したとき、第１切換弁11及び第２切換弁12がともに高
圧位置II（オン位置）に切り換えられる。低圧タンク13
内の低圧の圧縮空気は配管20、第１切換弁11のポート
２，３、配管17、吸込ポート25を通って圧縮機10に吸い
込まれる。圧縮機10で２段目の圧縮により低圧から高圧
に昇圧された圧縮空気は吐出ポート26、配管18、第２切
換弁12のポート１，３、配管22を通って高圧タンク14に
充填される。When the compressed air in the low pressure tank 13 reaches a predetermined pressure, both the first switching valve 11 and the second switching valve 12 are switched to the high pressure position II (on position). Low pressure tank 13
The low-pressure compressed air therein is sucked into the compressor 10 through the pipe 20, the ports 2 and 3 of the first switching valve 11, the pipe 17, and the suction port 25. The compressed air that has been boosted from a low pressure to a high pressure by the second stage compression in the compressor 10 passes through the discharge port 26, the pipe 18, the ports 1 and 3 of the second switching valve 12, and the pipe 22 and is charged into the high-pressure tank 14. .
【００１２】高圧タンク14内の圧縮空気が所定の高圧に
昇圧されると、この圧縮空気を高圧の圧縮空気として使
用することができる。また、低圧タンク13内の圧縮空気
を低圧の圧縮空気として使用することができる。低圧タ
ンク13内の圧縮空気及び高圧タンク14内の圧縮空気の使
用量に応じて、第１切換弁11及び第２切換弁12を低圧位
置Ｉ又は高圧位置IIに切り換えながら圧縮機10を作動さ
せることとなる。なお、高圧タンク14内の空気が低圧タ
ンク13内の空気よりも低圧のときは、配管19・21、チェ
ック弁15を通って低圧タンク13から高圧タンク14へ圧縮
空気が流れることとなる。When the pressure of the compressed air in the high-pressure tank 14 is increased to a predetermined high pressure, the compressed air can be used as high-pressure compressed air. Further, the compressed air in the low-pressure tank 13 can be used as low-pressure compressed air. The compressor 10 is operated while switching the first switching valve 11 and the second switching valve 12 to the low-pressure position I or the high-pressure position II according to the amount of compressed air in the low-pressure tank 13 and the amount of compressed air in the high-pressure tank 14. It will be. When the air in the high-pressure tank 14 is lower in pressure than the air in the low-pressure tank 13, the compressed air flows from the low-pressure tank 13 to the high-pressure tank 14 through the pipes 19 and 21 and the check valve 15.
【００１３】図２は、本発明の空気圧縮装置の実施の形
態第２を示す。実施の形態第２では、低昇圧比の圧縮機
が１台、６ポート３位置の切換弁が１個、タンクが３個
用いられている。切換弁（電磁切換弁）31には低圧位置
Ｉ、中圧位置II、高圧位置III があり、低圧位置Ｉでは
ポート１（大気側ポート）とポート５（圧縮機の吸込側
ポート）とが連通されるとともにポート６（圧縮機の吐
出側ポート）とポート２（低圧タンク側ポート）とが連
通され、ポート３（中圧タンク側ポート）と４ポート
（高圧タンク側ポート）がともにブロックされる。中圧
位置IIではポート２と５とが連通されるとともにポート
６と３とが連通され、ポート１と４がともにブロックさ
れる。高圧位置III ではポート３と５とが連通されると
ともにポート６と４とが連通され、ポート１と２がとも
にブロックされる。FIG. 2 shows a second embodiment of the air compressor according to the present invention. In the second embodiment, one compressor having a low boost ratio is used, one 6-port 3-position switching valve, and three tanks are used. The switching valve (electromagnetic switching valve) 31 has a low pressure position I, a medium pressure position II, and a high pressure position III. In the low pressure position I, port 1 (atmosphere side port) communicates with port 5 (compressor suction port). At the same time, port 6 (the discharge side port of the compressor) and port 2 (the low pressure tank side port) communicate with each other, and both port 3 (the medium pressure tank side port) and 4 ports (the high pressure tank side port) are blocked. . At the intermediate pressure position II, ports 2 and 5 are communicated, ports 6 and 3 are communicated, and both ports 1 and 4 are blocked. At the high pressure position III, ports 3 and 5 are communicated, ports 6 and 4 are communicated, and both ports 1 and 2 are blocked.
【００１４】切換弁31のポート１は配管38によって大気
に連通され、切換弁31のポート２〜４が配管41、42、43
によって低圧タンク32、中圧タンク33、高圧タンク34に
それぞれ連通されている。切換弁31のポート５は配管39
によって圧縮機30の吸込ポート57に連通され、圧縮機30
の吐出ポート58は配管40によって切換弁31のポート６に
連通されている。The port 1 of the switching valve 31 is connected to the atmosphere by a pipe 38, and the ports 2 to 4 of the switching valve 31 are connected to pipes 41, 42, 43.
The low pressure tank 32, the medium pressure tank 33, and the high pressure tank 34 communicate with each other. Port 5 of switching valve 31 is pipe 39
The compressor 30 communicates with the suction port 57 of the
The discharge port 58 is connected to the port 6 of the switching valve 31 by the pipe 40.
【００１５】配管41と配管42との間には配管44が接続さ
れ、配管44には配管41から配管42の方向の空気の流れの
みを許す第１チェック弁35が配設されている。また、配
管42と配管43との間には配管45が接続され、配管45には
配管42から配管43の方向の空気の流れのみを許す第２チ
ェック弁36が配設されている。低圧タンク32、中圧タン
ク33、高圧タンク34内の圧縮空気はそれぞれ配管46、4
7、48を通ってアクチュエータなどへ流出される。A pipe 44 is connected between the pipe 41 and the pipe 42. The pipe 44 is provided with a first check valve 35 that allows only air flow from the pipe 41 to the pipe 42. In addition, a pipe 45 is connected between the pipe 42 and the pipe 43, and a second check valve 36 that allows only the flow of air from the pipe 42 to the pipe 43 is provided in the pipe 45. The compressed air in the low-pressure tank 32, medium-pressure tank 33, and high-pressure tank 34
It flows out to the actuator etc. through 7, 48.
【００１６】各タンク32、33、34には圧力計がそれぞれ
配設され、圧縮機30は電動機により作動される。なお、
図２には３段圧縮の空気圧縮装置が示されているが、中
圧タンク33、第２チェック弁36等を取り除き（タンクを
低圧タンク及び高圧タンクの２個とし）、切換弁を低圧
位置と高圧位置の２位置の切換弁となして、２段圧縮の
空気圧縮装置とすることができる。A pressure gauge is provided in each of the tanks 32, 33 and 34, and the compressor 30 is operated by an electric motor. In addition,
FIG. 2 shows a three-stage compression air compressor. The intermediate pressure tank 33, the second check valve 36, and the like are removed (the tank is a low pressure tank and a high pressure tank), and the switching valve is moved to the low pressure position. And a two-position switching valve of a high-pressure position and a two-stage compression air compressor.
【００１７】実施の形態第２の作用について説明する。
切換弁31が図示の低圧位置Ｉ（中立位置）に位置すると
き、圧縮機30の作動により、大気が配管38、切換弁31の
ポート１，5 、配管39、吸込ポート57を通って圧縮機30
に吸い込まれる。圧縮機30で１段目の圧縮により昇圧さ
れた低圧の圧縮空気は吐出ポート58、配管40、切換弁31
のポート６，２、配管41を通って低圧タンク32に充填さ
れる。The operation of the second embodiment will be described.
When the switching valve 31 is located at the illustrated low-pressure position I (neutral position), the operation of the compressor 30 causes the atmosphere to pass through the pipe 38, the ports 1 and 5 of the switching valve 31, the pipe 39, and the suction port 57. 30
Sucked into. The low-pressure compressed air pressurized by the first-stage compression in the compressor 30 is supplied to the discharge port 58, the pipe 40, and the switching valve 31.
The low pressure tank 32 is filled through the ports 6 and 2 and the pipe 41.
【００１８】低圧タンク32内の圧縮空気が所定の圧力に
達したとき、ソレノイド28に電圧が印可され、切換弁31
が中圧位置IIに切り換えられる。低圧タンク32内の低圧
の圧縮空気が配管41、切換弁31のポート２，5 、配管3
9、吸込ポート57を通って圧縮機30に吸い込まれる。圧
縮機30で２段目の圧縮により低圧から中圧に昇圧された
圧縮空気は、吐出ポート58、配管40、切換弁31のポート
６，３、配管42を通って中圧タンク33に充填される。When the compressed air in the low pressure tank 32 reaches a predetermined pressure, a voltage is applied to the solenoid 28 and the switching valve 31
Is switched to the medium pressure position II. Low-pressure compressed air in the low-pressure tank 32 is supplied to the pipe 41, the ports 2 and 5 of the switching valve 31, and the pipe 3
9, is sucked into the compressor 30 through the suction port 57. The compressed air whose pressure has been raised from low pressure to medium pressure by the compressor 30 in the second stage passes through the discharge port 58, the pipe 40, the ports 6 and 3 of the switching valve 31, and the pipe 42 and is charged into the medium pressure tank 33. You.
【００１９】中圧タンク33内の圧縮空気が所定の圧力に
達したとき、ソレノイド29に電圧が印可され、切換弁31
が高圧位置III に切り換えられる。中圧タンク33内の中
圧の圧縮空気が配管42、切換弁31のポート３，5 、配管
39、吸込ポート57を通って圧縮機30に吸い込まれる。圧
縮機30で３段目の圧縮により中圧から高圧に昇圧された
圧縮空気は吐出ポート58、配管40、切換弁31のポート
６，４、配管43を通って高圧タンク34に充填される。When the compressed air in the medium pressure tank 33 reaches a predetermined pressure, a voltage is applied to the solenoid 29 and the switching valve 31
Is switched to the high pressure position III. The medium-pressure compressed air in the medium-pressure tank 33 is supplied to the pipe 42, the ports 3 and 5 of the switching valve 31, and the pipe.
39, is sucked into the compressor 30 through the suction port 57. The compressed air that has been pressurized from a medium pressure to a high pressure by the third stage compression by the compressor 30 passes through the discharge port 58, the pipe 40, the ports 6 and 4 of the switching valve 31, and the pipe 43 and is charged into the high-pressure tank 34.
【００２０】高圧タンク34内の空気が中圧タンク33の空
気よりも低圧のときは、配管42・45、第２チェック弁3
6、配管43を通って中圧タンク33から高圧タンク34へ圧
縮空気が流される。同様に、中圧タンク33内の空気が低
圧タンク32の空気よりも低圧のときは、配管41・44、第
１チェック弁35、配管42を通って低圧タンク32から中圧
タンク33へ圧縮空気が流される。When the air in the high-pressure tank 34 is lower in pressure than the air in the medium-pressure tank 33, the pipes 42 and 45 and the second check valve 3
6. Compressed air flows from the medium pressure tank 33 to the high pressure tank 34 through the pipe 43. Similarly, when the air in the medium-pressure tank 33 is lower in pressure than the air in the low-pressure tank 32, the compressed air from the low-pressure tank 32 to the medium-pressure tank 33 passes through the pipes 41 and 44, the first check valve 35, and the pipe 42. Is shed.
【００２１】高圧タンク34内の圧縮空気が所定の高圧に
昇圧されると、この圧縮空気を高圧の圧縮空気として使
用することができる。同様に、中圧タンク33又は低圧タ
ンク32内の圧縮空気を中圧又は低圧の圧縮空気として使
用することができる。なお、低圧タンク32、中圧タンク
33、高圧タンク34内のそれぞれの圧縮空気の使用量に応
じて、切換弁31を切り換えながら圧縮機10を作動させる
こととなる。When the pressure of the compressed air in the high-pressure tank 34 is increased to a predetermined high pressure, the compressed air can be used as high-pressure compressed air. Similarly, the compressed air in the medium pressure tank 33 or the low pressure tank 32 can be used as the medium or low pressure compressed air. The low-pressure tank 32 and the medium-pressure tank
33, the compressor 10 is operated while switching the switching valve 31 in accordance with the amount of each compressed air in the high-pressure tank 34.
【００２２】図３は本発明の空気圧縮装置の実施の形態
第３を示す。実施の形態第３では、低昇圧比の圧縮機が
１台、４ポート２位置の切換弁（電磁切換弁）が４個、
タンクが４個用いられている。第１切換弁61〜第４切換
弁64にはそれぞれ遮断位置Ｉ及び連通位置IIがあり、遮
断位置Ｉではポート１〜４がすべてブロックされ、連通
位置IIではポート１と３とが連通されるとともにポート
４と２とが連通される。FIG. 3 shows a third embodiment of the air compressor according to the present invention. In the third embodiment, one compressor with a low boost ratio is provided, and four 4-port 2-position switching valves (electromagnetic switching valves) are provided.
Four tanks are used. Each of the first switching valve 61 to the fourth switching valve 64 has a shutoff position I and a communication position II. In the shutoff position I, all the ports 1 to 4 are blocked, and in the communication position II, the ports 1 and 3 are communicated. Also, ports 4 and 2 are communicated.
【００２３】第１切換弁61〜第４切換弁64の各ポート３
（圧縮機の吸込側ポート）は配管79によって圧縮機60の
吸込ポート75に連通され、圧縮機60の吐出ポート76は配
管80によって第１切換弁61〜第４切換弁64の各ポート４
（圧縮機の吐出側ポート）に連通されている。なお、配
管79、80は第１切換弁61〜第４切換弁64の各ポート３、
4 に連通するため分岐されているが、分岐された配管を
含めて配管79、80と総称することとする。Each port 3 of the first to fourth switching valves 61 to 64
(The suction side port of the compressor) is connected to a suction port 75 of the compressor 60 by a pipe 79, and a discharge port 76 of the compressor 60 is connected by a pipe 80 to each port 4 of the first switching valve 61 to the fourth switching valve 64.
(A discharge port of the compressor). The pipes 79 and 80 are connected to the respective ports 3 of the first to fourth switching valves 61 to 64,
Although it is branched to communicate with 4, the pipes 79 and 80 are collectively referred to including the branched pipe.
【００２４】第１切換弁61のポート１（大気側ポート）
は配管78によって大気に連通され、第１切換弁61のポー
ト２（第１タンク側ポート）は配管81によって第１タン
ク66に連通されている。第２切換弁62のポート１（第１
タンク側ポート）は配管82，81によって第１タンク66に
連通され、第２切換弁62のポート２（第２タンク側ポー
ト）は配管84によって第２タンク67に連通されている。
第３切換弁63のポート１（第２タンク側ポート）は配管
85，84によって第２タンク67に連通され、第３切換弁63
のポート２（第３タンク側ポート）は配管87によって第
３タンク68に連通されている。第４切換弁64のポート１
（第３タンク側ポート）は配管88、87によって第３タン
ク68に連通され、第４切換弁64のポート２（第４タンク
側ポート）は配管90によって第４タンク69に連通されて
いる。Port 1 of first switching valve 61 (atmosphere side port)
Is connected to the atmosphere by a pipe 78, and the port 2 (first tank side port) of the first switching valve 61 is connected to the first tank 66 by a pipe 81. Port 1 of the second switching valve 62 (first
The tank-side port is connected to the first tank 66 by pipes 82 and 81, and the port 2 (second tank-side port) of the second switching valve 62 is connected to the second tank 67 by pipe 84.
Port 1 (port on the second tank side) of the third switching valve 63 is piping
85, 84 communicate with the second tank 67, and the third switching valve 63
Port 2 (third tank side port) is connected to the third tank 68 by a pipe 87. Port 1 of fourth switching valve 64
The (third tank side port) is connected to the third tank 68 by pipes 88 and 87, and the port 2 (fourth tank side port) of the fourth switching valve 64 is connected to the fourth tank 69 by a pipe 90.
【００２５】配管81と配管84との間には配管83が接続さ
れ、配管83には配管81から配管84の方向の空気の流れの
みを許す第１チェック弁71が配設されている。また、配
管84と配管87との間には配管86が接続され、配管86には
配管84から配管87の方向の空気の流れのみを許す第２チ
ェック弁72が配設されている。同様に、配管87と配管90
との間には配管89が接続され、配管89には配管87から配
管90の方向の空気の流れのみを許す第３チェック弁73が
配設されている。A pipe 83 is connected between the pipe 81 and the pipe 84, and the pipe 83 is provided with a first check valve 71 that allows only the flow of air from the pipe 81 to the pipe 84. A pipe 86 is connected between the pipe 84 and the pipe 87, and the pipe 86 is provided with a second check valve 72 that allows only the flow of air from the pipe 84 to the pipe 87. Similarly, pipe 87 and pipe 90
A pipe 89 is connected between the first and second pipes, and the pipe 89 is provided with a third check valve 73 that allows only the air flow from the pipe 87 to the pipe 90.
【００２６】第１タンク66〜第４タンク69の圧縮空気は
それぞれ配管91〜94を通ってアクチュエータなどへ流出
される。第１タンク66〜第４タンク69には圧力計がそれ
ぞれ配設され、圧縮機60は電動機により作動される。な
お、図３には４段圧縮の例が記載されているが、第４切
換弁64，第４タンク69，第３チェック弁73，配管を取り
去って３段圧縮の装置にすることができ、同様にして２
段圧縮の装置にすることができる。また、図３の装置に
切換弁、タンク、チェック弁を順次に追加し、配管によ
り２〜４段と同様に接続して、ｎ段圧縮とすることがで
きる。The compressed air in the first tank 66 to the fourth tank 69 flows out to an actuator or the like through pipes 91 to 94, respectively. Pressure gauges are respectively arranged in the first tank 66 to the fourth tank 69, and the compressor 60 is operated by an electric motor. FIG. 3 shows an example of four-stage compression. However, the fourth switching valve 64, the fourth tank 69, the third check valve 73, and the piping can be removed to provide a three-stage compression device. Similarly, 2
It can be a stage compression device. Further, a switching valve, a tank, and a check valve are sequentially added to the apparatus shown in FIG.
【００２７】実施の形態第３の作用について説明する。
第１切換弁61を連通位置に切り換え、第２切換弁62〜第
４切換弁64を遮断位置に維持し、圧縮機60を作動させ
て、１段目の圧縮が行われる。大気が配管78、第１切換
弁61のポート１，３、配管79、吸込ポート75を通って圧
縮機60に吸い込まれる。圧縮機60で１段目の圧縮により
昇圧された圧縮空気は吐出ポート76、配管80、第１切換
弁61のポート４，２、配管81を通って第１タンク66に充
填される。The operation of the third embodiment will be described.
The first switching valve 61 is switched to the communication position, the second switching valve 62 to the fourth switching valve 64 are maintained in the shut-off position, and the compressor 60 is operated to perform the first-stage compression. Atmosphere is sucked into the compressor 60 through the pipe 78, the ports 1 and 3 of the first switching valve 61, the pipe 79, and the suction port 75. The compressed air that has been pressurized by the first stage compression in the compressor 60 is filled into the first tank 66 through the discharge port 76, the pipe 80, the ports 4 and 2 of the first switching valve 61, and the pipe 81.
【００２８】第１タンク66内の圧縮空気が所定の圧力に
達したとき、第１切換弁61が遮断位置に切り換えられ、
第２切換弁62が連通位置に切り換えられ、第３切換弁63
・第４切換弁64が遮断位置に維持されて、２段目の圧縮
が行われる。第１タンク66内の圧縮空気が配管81，82、
第２切換弁62のポート１，３、配管79、吸込ポート75を
通って圧縮機60に吸い込まれる。圧縮機60で２段目の圧
縮により昇圧された圧縮空気は吐出ポート76、配管80、
第２切換弁62のポート４，２、配管84を通って第２タン
ク67に充填される。When the compressed air in the first tank 66 reaches a predetermined pressure, the first switching valve 61 is switched to the shut-off position,
The second switching valve 62 is switched to the communication position, and the third switching valve 63
-The fourth switching valve 64 is maintained at the shut-off position, and the second-stage compression is performed. The compressed air in the first tank 66 is
The gas is sucked into the compressor 60 through the ports 1 and 3 of the second switching valve 62, the pipe 79, and the suction port 75. The compressed air pressurized by the second stage compression in the compressor 60 is supplied to the discharge port 76, the pipe 80,
The second tank 67 is filled through the ports 4 and 2 of the second switching valve 62 and the pipe 84.
【００２９】第２タンク67内の圧縮空気が所定の圧力に
達したとき、第３切換弁63が連通位置に切り換えられ、
他の切換弁61，62，64が遮断位置に位置され、第２段目
の圧縮と同様にして、第２タンク67内の圧縮空気が圧縮
機60で３段目の圧縮により昇圧されて第３タンク68に充
填される。同様に、第３タンク68内の圧縮空気が所定の
圧力に達したとき、第３タンク87内の圧縮空気が圧縮機
60で４段目の圧縮により昇圧されて第４タンク69に充填
される。第１チェック弁71〜第３チェック弁73の機能、
第１切換弁61〜第４切換弁64の操作、その他のことは実
施の形態第１，第２と同様である。When the compressed air in the second tank 67 reaches a predetermined pressure, the third switching valve 63 is switched to the communication position,
The other switching valves 61, 62, and 64 are located at the shut-off positions, and the compressed air in the second tank 67 is pressurized by the third stage compression by the compressor 60 in the same manner as in the second stage compression. The third tank 68 is filled. Similarly, when the compressed air in the third tank 68 reaches a predetermined pressure, the compressed air in the third tank 87 is
At 60, the pressure is increased by the fourth stage compression and the fourth tank 69 is filled. Functions of the first to third check valves 71 to 73,
The operation of the first switching valve 61 to the fourth switching valve 64, and others are the same as those of the first and second embodiments.
【００３０】[0030]
【発明の効果】本発明においては、１台の低昇圧比の圧
縮機により２〜ｎ段の圧縮を行って高圧の圧縮空気を発
生させることができ、昇圧の途中の圧縮空気を取り出し
て低圧〜高圧（２〜ｎ種類の圧力）の圧縮空気を発生さ
せることができる。低昇圧比の圧縮機を１台使用するの
みであるので、圧縮空気の温度上昇が小さくて冷却が不
要であり、電力消費及び空気圧縮装置のコストが低い。According to the present invention, high-pressure compressed air can be generated by performing compression in two to n stages using a single compressor having a low pressure-rise ratio, and the compressed air that is being pressurized is taken out to produce low-pressure compressed air. To generate high-pressure (2 to n kinds of pressures) compressed air. Since only one compressor having a low boost ratio is used, the temperature rise of the compressed air is small and cooling is not required, and the power consumption and the cost of the air compressor are low.
【図１】本発明の空気圧縮装置の実施の形態第１の回路
図である。FIG. 1 is a first circuit diagram of an embodiment of an air compression device of the present invention.
【図２】本発明の空気圧縮装置の実施の形態第２の回路
図である。FIG. 2 is a circuit diagram of a second embodiment of the air compressor according to the present invention.
【図３】本発明の空気圧縮装置の実施の形態第３の回路
図である。FIG. 3 is a circuit diagram of an air compressor according to a third embodiment of the present invention.
【図４】図４(a) は空気圧縮装置の従来例１の回路図で
あり、図４(b) は空気圧縮装置の従来例２の回路図であ
る。FIG. 4 (a) is a circuit diagram of a first conventional example of an air compressor, and FIG. 4 (b) is a circuit diagram of a second conventional example of an air compressor.
10：圧縮機 11：第１切換弁 12：第２切換弁 13：低圧タンク 14：高圧タンク 10: Compressor 11: First switching valve 12: Second switching valve 13: Low pressure tank 14: High pressure tank
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小根山 尚武 茨城県筑波郡谷和原村絹の台４−２−２ エスエムシー株式会社筑波技術センター内 Ｆターム(参考） 3H045 AA05 AA09 AA12 AA26 BA20 CA04 CA05 DA12 DA15 EA13 EA26 EA45 3H076 BB34 BB41 CC44 CC94 CC95 CC97 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Naotake Oneyama 4-2-2 Kinudai, Yawahara-mura, Tsukuba-gun, Ibaraki Pref. EA26 EA45 3H076 BB34 BB41 CC44 CC94 CC95 CC97
Claims (6)
を発生させる空気圧縮装置において、１台の低昇圧比の
圧縮機と適宜数の切換弁と複数個のタンクが配管により
連通され、圧縮機の作動と切換弁の切換操作により、相
対的に低い圧力の空気が相対的に高い圧力の空気に順次
に圧縮して昇圧されることを特徴とする空気圧縮装置。1. An air compressor for generating high-pressure compressed air by a compressor having a low pressure ratio, one compressor having a low pressure ratio, an appropriate number of switching valves, and a plurality of tanks are communicated by piping. An air compressor characterized in that relatively low pressure air is sequentially compressed into relatively high pressure air and pressurized by operating a compressor and switching a switching valve.
低圧タンク・高圧タンクがそれぞれ配設され、第１切換
弁・第２切換弁が低圧位置にそれぞれ位置するとき、大
気が圧縮機の吸込ポートに連通されるとともに圧縮機の
吐出ポートが低圧タンクに連通され、第１切換弁・第２
切換弁が高圧位置にそれぞれ位置するとき、低圧タンク
が圧縮機の吸込ポートに連通されるとともに圧縮機の吐
出ポートが高圧タンクに連通される請求項１の空気圧縮
装置。2. A three-port first switching valve and a second switching valve and a low-pressure tank and a high-pressure tank are respectively provided. When the first switching valve and the second switching valve are located at the low-pressure position, the atmosphere is compressed. The compressor is connected to a suction port and a discharge port of a compressor is connected to a low-pressure tank.
2. The air compressor according to claim 1, wherein the low pressure tank is connected to a suction port of the compressor and a discharge port of the compressor is connected to the high pressure tank when the switching valve is located at each of the high pressure positions.
タンクがそれぞれ配設され、前記切換弁が低圧位置に位
置するとき、大気が圧縮機の吸込ポートに連通されると
ともに圧縮機の吐出ポートが低圧タンクに連通され、前
記切換弁が高圧位置に位置するとき、低圧タンクが圧縮
機の吸込ポートに連通されるとともに圧縮機の吐出ポー
トが高圧タンクに連通される請求項１の空気圧縮装置。3. A 6-port switching valve and a low-pressure tank / high-pressure tank are provided, respectively. When the switching valve is located at a low-pressure position, the atmosphere is communicated with a suction port of the compressor and a discharge port of the compressor. 2. The air compressor according to claim 1, wherein the low pressure tank is communicated with a suction port of the compressor and the discharge port of the compressor is communicated with the high pressure tank when the switching valve is located at a high pressure position. .
タンク・高圧タンクがそれぞれ配設され、前記切換弁が
低圧位置に位置するとき、大気が圧縮機の吸込ポートに
連通されるとともに圧縮機の吐出ポートが低圧タンクに
連通され、前記切換弁が中圧位置に位置するとき、低圧
タンクが圧縮機の吸込ポートに連通されるとともに圧縮
機の吐出ポートが中圧タンクに連通され、前記切換弁が
高圧位置に位置するとき、中圧タンクが圧縮機の吸込ポ
ートに連通されるとともに圧縮機の吐出ポートが高圧タ
ンクに連通される請求項１の空気圧縮装置。4. A 6-port switching valve and a low-pressure tank / intermediate-pressure tank / high-pressure tank are provided, respectively. When the switching valve is located at a low-pressure position, the atmosphere is communicated with a suction port of the compressor and compressed. When the discharge port of the compressor is in communication with the low pressure tank and the switching valve is located at the medium pressure position, the low pressure tank is in communication with the suction port of the compressor and the discharge port of the compressor is in communication with the medium pressure tank. 2. The air compressor according to claim 1, wherein when the switching valve is located at the high pressure position, the medium pressure tank is communicated with a suction port of the compressor and a discharge port of the compressor is communicated with the high pressure tank.
第１タンク・第２タンクがそれぞれ配設され、第１切換
弁が連通位置に位置し第２切換弁が遮断位置に位置する
とき、大気が圧縮機の吸込ポートに連通されるとともに
圧縮機の吐出ポートが第１タンクに連通され、第１切換
弁が遮断位置に位置し第２切換弁が連通位置に位置する
とき、第１タンクが圧縮機の吸込ポートに連通されると
ともに圧縮機の吐出ポートが第２タンクに連通される請
求項１の空気圧縮装置。5. A four-port first switching valve / second switching valve and a first tank / second tank are provided, respectively, wherein the first switching valve is located at the communicating position and the second switching valve is located at the shut-off position. When the air is communicated with the suction port of the compressor and the discharge port of the compressor is communicated with the first tank, the first switching valve is located at the shut-off position and the second switching valve is located at the communication position. The air compressor according to claim 1, wherein the first tank is connected to a suction port of the compressor, and a discharge port of the compressor is connected to a second tank.
第１タンク〜第ｎタンクがそれぞれ配設され、第１切換
弁が連通位置に位置し第２切換弁〜第ｎ切換弁が遮断位
置に位置するとき、大気が圧縮機の吸込ポートに連通さ
れるとともに圧縮機の吐出ポートが第１タンクに連通さ
れ、第２切換弁〜第ｎ切換弁及び第２タンク〜第ｎタン
クについてｎを２から順次に増加して、第１切換弁〜第
ｎ−１切換弁が遮断位置に位置し第ｎ切換弁が連通位置
に位置するとき、第ｎ−１タンクが圧縮機の吸込ポート
に連通されるとともに圧縮機の吐出ポートが第ｎタンク
に連通される請求項１の空気圧縮装置。6. A four-port first switching valve to an n-th switching valve and a first tank to an n-th tank are respectively disposed, and the first switching valve is located at a communication position and a second switching valve to an n-th switching valve is provided. Is in the shut-off position, the atmosphere is communicated with the suction port of the compressor, the discharge port of the compressor is communicated with the first tank, and the second switching valve to the n-th switching valve and the second tank to the n-th tank N is sequentially increased from 2 so that when the first switching valve to the (n-1) th switching valve are located at the shut-off position and the n-th switching valve is located at the communication position, the (n-1) th tank is driven by the suction of the compressor. The air compressor according to claim 1, wherein the air compressor is connected to the port and a discharge port of the compressor is connected to the n-th tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000334063A JP3668421B2 (en) | 2000-11-01 | 2000-11-01 | Air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000334063A JP3668421B2 (en) | 2000-11-01 | 2000-11-01 | Air compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002138958A true JP2002138958A (en) | 2002-05-17 |
| JP3668421B2 JP3668421B2 (en) | 2005-07-06 |
Family
ID=18810049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000334063A Expired - Fee Related JP3668421B2 (en) | 2000-11-01 | 2000-11-01 | Air compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3668421B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1798416A1 (en) * | 2005-12-16 | 2007-06-20 | ING. ENEA MATTEI S.p.A. | Rotary compressor with improved working efficiency and relative method |
| JP2009008065A (en) * | 2007-06-29 | 2009-01-15 | Hitachi Ltd | Compressor |
| CN107044437A (en) * | 2017-05-22 | 2017-08-15 | 无锡商业职业技术学院 | The regulation and control system of compound compressor |
-
2000
- 2000-11-01 JP JP2000334063A patent/JP3668421B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1798416A1 (en) * | 2005-12-16 | 2007-06-20 | ING. ENEA MATTEI S.p.A. | Rotary compressor with improved working efficiency and relative method |
| JP2009008065A (en) * | 2007-06-29 | 2009-01-15 | Hitachi Ltd | Compressor |
| CN107044437A (en) * | 2017-05-22 | 2017-08-15 | 无锡商业职业技术学院 | The regulation and control system of compound compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3668421B2 (en) | 2005-07-06 |
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