JP2008231936A - Linear drive compressor - Google Patents

Linear drive compressor Download PDF

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JP2008231936A
JP2008231936A JP2007068606A JP2007068606A JP2008231936A JP 2008231936 A JP2008231936 A JP 2008231936A JP 2007068606 A JP2007068606 A JP 2007068606A JP 2007068606 A JP2007068606 A JP 2007068606A JP 2008231936 A JP2008231936 A JP 2008231936A
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cylinder
gas
piston
linear drive
discharge port
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JP4860515B2 (en
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Minoru Tezuka
稔 手塚
Takeshi Yanagisawa
健 柳澤
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Anest Iwata Corp
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Anest Iwata Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent the excessive amplitude of a piston in low-load and also ease resistance of power in excessive load, by simple structure. <P>SOLUTION: In this linear drive compressor, gas compressed in a cylinder 9 is delivered from a delivery port 12 by reciprocating a piston 8 in the cylinder 9. An orifice hole 13 which can be elongated and contracted by the elastic deformation of an aperture allowing gas to pass therethrough according to pressure of gas compressed in the cylinder 9, is arranged in a part communicating with the delivery port 12. The orifice hole 13 is formed in an elastic packing 11 for sealing between the cylinder 9 and a cylinder head 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、ピストンがシリンダ内を往復移動することにより、シリンダ内で圧縮された気体を吐出口から吐出するようにしたリニア駆動式圧縮機に関する。   The present invention relates to a linear drive type compressor in which a gas compressed in a cylinder is discharged from a discharge port by reciprocating a piston in the cylinder.

リニア駆動式圧縮機においては、ピストンがシリンダ内を往復移動することにより、シリンダ内で圧縮された気体を吐出口から吐出するようにしている（例えば、特許文献１参照）。このような圧縮機は、吐出口から吐出される気体の圧力が低い低負荷時、例えば、シリンダ内の気体が十分に圧縮されていない状態の運転初期時に、定格負荷時の電圧を印加させると、ピストンの往復運動が過大振幅となり、ピストンの頭部がシリンダヘッドに衝突して、ピストン又はシリンダヘッドの破損を招くおそれがある。この問題を解決するには、吐出口の口径をシリンダ内で圧縮された気体の圧力に応じて手動で変化させる方法、または圧縮機の運転を電気的制御により調節する方法が考えられる。
特開２００６−１０５０８９号公報 In the linear drive type compressor, the piston is reciprocated in the cylinder so that the gas compressed in the cylinder is discharged from the discharge port (see, for example, Patent Document 1). When such a compressor applies a voltage at the rated load at a low load when the pressure of the gas discharged from the discharge port is low, for example, at the initial stage of operation when the gas in the cylinder is not sufficiently compressed, The reciprocating motion of the piston has an excessive amplitude, and the piston head may collide with the cylinder head, causing damage to the piston or the cylinder head. In order to solve this problem, a method of manually changing the diameter of the discharge port according to the pressure of the gas compressed in the cylinder, or a method of adjusting the operation of the compressor by electric control can be considered.
JP 2006-105089 A

しかし、上述における前者の方法においては、吐出口の口径を気体の圧力に応じてその都度調節しなければならず、調節作業が面倒であり、また、吐出口の口径を絞り過ぎると、低負荷時以外のときそれが圧縮機の運転の抵抗となって、駆動効率の低下を招くこととなる。また、後者の方法においては、電気制御が複雑になり、コストアップを招く問題がある。   However, in the former method described above, the diameter of the discharge port must be adjusted each time according to the gas pressure, and the adjustment work is troublesome, and if the diameter of the discharge port is excessively reduced, the load is low. When it is not time, it becomes resistance of the operation of the compressor, and the drive efficiency is lowered. In the latter method, there is a problem that the electric control is complicated and the cost is increased.

本発明は、従来の技術が有する上記のような問題点に鑑み、簡単な構成により、低負荷時でのピストンの過大振幅を防止するとともに、過負荷時での動力の抵抗を緩和することができるようにしたリニア駆動式圧縮機を提供することを目的としている。   In view of the above-described problems of the prior art, the present invention can prevent an excessive amplitude of a piston at a low load with a simple configuration and reduce a resistance of power at an overload. An object of the present invention is to provide a linear drive compressor that can be used.

本発明によると、上記課題は次のようにして解決される。
（１）ピストンがシリンダ内を往復移動することにより、前記シリンダ内で圧縮された気体を吐出口から吐出するようにしたリニア駆動式圧縮機において、前記吐出口に通じる部分に、前記気体の圧力に応じて、前記気体が通過する口径が弾性変形により伸縮可能な絞り孔を設ける。 According to the present invention, the above problem is solved as follows.
(1) In a linear drive compressor in which a gas compressed in the cylinder is discharged from a discharge port by reciprocating the piston in the cylinder, the pressure of the gas in a portion communicating with the discharge port Accordingly, the aperture hole through which the gas passes can be expanded and contracted by elastic deformation.

（２）上記(１)項において、前記絞り孔を、前記シリンダとシリンダヘッドとの間をシールする弾性パッキンに設ける。 (2) In the above item (1), the throttle hole is provided in an elastic packing that seals between the cylinder and the cylinder head.

本発明によると、次のような効果を奏することができる。
請求項１記載の発明によると、低負荷運転時、すなわちシリンダ内で圧縮される気体の圧力が低いときには、絞り孔の口径が小さく保たれて、吐出口から吐出する気体の吐出量を制限し、それが抵抗となってピストンの過大振幅を阻止して、ピストンがシリンダヘッドに衝突することを防止することができる。また、高負荷運転時、すなわちシリンダ内で圧縮された気体の圧力が高くなると、その圧力に応じて、絞り孔が弾性変形してその口径が拡大するため、動力抵抗を緩和することができる。 According to the present invention, the following effects can be achieved.
According to the first aspect of the invention, during low-load operation, that is, when the pressure of the gas compressed in the cylinder is low, the diameter of the throttle hole is kept small to limit the amount of gas discharged from the discharge port. , It becomes a resistance to prevent an excessive amplitude of the piston, and the piston can be prevented from colliding with the cylinder head. Further, during high-load operation, that is, when the pressure of the gas compressed in the cylinder increases, the throttle hole is elastically deformed according to the pressure and the diameter of the throttle hole is increased, so that the power resistance can be relaxed.

請求項２の発明によると、絞り孔を設ける弾性パッキンを別途設ける必要が無く、部品数の増加を抑えることができる。   According to the invention of claim 2, it is not necessary to separately provide an elastic packing for providing a throttle hole, and an increase in the number of parts can be suppressed.

図１は、本発明を適用したリニア駆動式圧縮機の断面図、図２は、同じく要部の分解斜視図である。圧縮機１は、左右１対の円筒状のハウジング２、２と、両ハウジング２間に設けられる磁性体のヨーク３と、両ハウジング２内にあって、ヨーク３の両端部に固定されている左右１対のコイル４と、ヨーク３の内周面に固定されているリング状の永久磁石５と、ハウジング２内に左右方向へ移動可能に支持されている可動鉄心６と、可動鉄心６の中心部に固着され、可動鉄心６と共に左右方向へ移動可能なピストンロッド７と、ハウジング２内に設けられたシリンダ９、９内に往復移動可能に挿入され、ピストンロッド７の両端部に連結された左右のピストン８、８と、シリンダ９、９の外端部に複数のボルト２０により固定されるシリンダヘッド１０、１０とを備えている。   FIG. 1 is a cross-sectional view of a linear drive compressor to which the present invention is applied, and FIG. 2 is an exploded perspective view of the main part. The compressor 1 includes a pair of left and right cylindrical housings 2 and 2, a magnetic yoke 3 provided between the two housings 2, and is fixed to both ends of the yoke 3 in both housings 2. A pair of left and right coils 4, a ring-shaped permanent magnet 5 fixed to the inner peripheral surface of the yoke 3, a movable iron core 6 supported in the housing 2 so as to be movable in the left-right direction, and a movable iron core 6 A piston rod 7 fixed to the center and movable in the left-right direction together with the movable iron core 6 is inserted into cylinders 9 and 9 provided in the housing 2 so as to be reciprocally movable, and is connected to both ends of the piston rod 7. The left and right pistons 8 and 8 and the cylinder heads 10 and 10 fixed to the outer ends of the cylinders 9 and 9 by a plurality of bolts 20 are provided.

各シリンダ９の外端部は、ハウジング２の外端面と同一面となっている。シリンダ９及びハウジング２の外端部とシリンダヘッド１０との間には、その間をシールするための耐熱性ゴム等からなる弾性パッキン１１が設けられている。   The outer end portion of each cylinder 9 is flush with the outer end surface of the housing 2. Between the cylinder 9 and the outer ends of the housing 2 and the cylinder head 10, an elastic packing 11 made of heat-resistant rubber or the like is provided for sealing between the cylinder head 10 and the cylinder head 10.

シリンダヘッド１０には、シリンダ９内で圧縮された気体をハウジング２の外部に吐出するための吐出口１２が設けられている。また、弾性パッキン１１における吐出口１２に対向する面には、吐出口１２に通じて、シリンダ９内で圧縮された気体が通過可能な絞り孔１３が穿設されている。絞り孔１３の口径は、常時（弾性変形する前の状態）、吐出口１２の口径よりも小径であるが、シリンダ９内で圧縮された気体の圧力に応じて適正に弾性変形して拡大するようになっている。   The cylinder head 10 is provided with a discharge port 12 for discharging the gas compressed in the cylinder 9 to the outside of the housing 2. Further, a throttle hole 13 through which the gas compressed in the cylinder 9 can pass through the discharge port 12 is formed in the surface of the elastic packing 11 facing the discharge port 12. The diameter of the throttle hole 13 is always smaller (the state before elastic deformation) than the diameter of the discharge port 12, but expands by appropriately elastically deforming according to the pressure of the gas compressed in the cylinder 9. It is like that.

本実施例においては、絞り孔１３をシリンダ９の外端部とシリンダヘッド１０との間をシールするための弾性パッキン１１に設けたが、本発明は、これに特定されるものではなく、例えば、絞り孔１３を弾性パッキン１１と別体で形成する弾性パッキンに設けても良い。   In the present embodiment, the throttle hole 13 is provided in the elastic packing 11 for sealing between the outer end portion of the cylinder 9 and the cylinder head 10, but the present invention is not limited to this, for example, The throttle hole 13 may be provided in an elastic packing formed separately from the elastic packing 11.

上記構成において、コイル４に通電すると、可動鉄心６と共にピストンロッド７は左右方向へ往復運動し、左右のピストン８は、圧縮、吸気工程を繰返す。ピストン８の吸気工程において、シリンダ９内の負圧により、外部の気体は、ハウジング２の側面に設けられた吸気ポート１４からハウジング２の吸気室１５に吸入され、ピストン８に設けられた吸入孔１６及び吸入弁１７を通ってシリンダ９内に流入される。そして、シリンダ９内に吸い込まれた気体は、ピストン８の圧縮工程で圧縮されて、シリンダ９の側面に設けられた吐出孔１８及び吐出弁１９を経て、絞り孔１３を通ってシリンダヘッド１０の吐出口１２からハウジング２の外部へ吐出される。   In the above configuration, when the coil 4 is energized, the piston rod 7 reciprocates in the left-right direction together with the movable iron core 6, and the left and right pistons 8 repeat the compression and intake processes. In the intake process of the piston 8, due to the negative pressure in the cylinder 9, external gas is sucked into the intake chamber 15 of the housing 2 from the intake port 14 provided on the side surface of the housing 2, and the suction hole provided in the piston 8. 16 and the suction valve 17 and flow into the cylinder 9. Then, the gas sucked into the cylinder 9 is compressed in the compression process of the piston 8, passes through the discharge hole 18 and the discharge valve 19 provided on the side surface of the cylinder 9, passes through the throttle hole 13, and flows into the cylinder head 10. It is discharged from the discharge port 12 to the outside of the housing 2.

この場合、低負荷運転時、例えば、シリンダ９内の気体が十分に圧縮されていない状態の運転初期時、シリンダ９内から吐出される気体は低圧であるため、図３に示すように、絞り孔１３の口径は小さく保たれて、吐出口１２から吐出される気体２１の吐出量は制限され、それが抵抗となってピストン８の過大振幅を阻止して、ピストン８がシリンダヘッド１０に衝突することを防止することができる。   In this case, at the time of low load operation, for example, at the initial stage of operation when the gas in the cylinder 9 is not sufficiently compressed, the gas discharged from the cylinder 9 is at a low pressure, so as shown in FIG. The diameter of the hole 13 is kept small, and the discharge amount of the gas 21 discharged from the discharge port 12 is limited, which acts as a resistance to prevent an excessive amplitude of the piston 8 and the piston 8 collides with the cylinder head 10. Can be prevented.

また、高負荷運転運転時、例えば、シリンダ９内の気体が十分に圧縮された状態においては、シリンダ９内から吐出される気体が高圧であるため、図４に示すように、絞り孔１３の口径は、シリンダ９内から吐出される気体の圧力に応じて、弾性変形により拡径する。これにより、吐出口１２から吐出される気体２１は、絞り孔１３の抵抗を受けることなく、吐出口１２から外部へ吐出される。この結果、高負荷運転時における動力抵抗を緩和することができる。   Further, during high-load operation, for example, in a state where the gas in the cylinder 9 is sufficiently compressed, the gas discharged from the cylinder 9 is at a high pressure, so that as shown in FIG. The diameter is expanded by elastic deformation according to the pressure of the gas discharged from the cylinder 9. Thereby, the gas 21 discharged from the discharge port 12 is discharged outside from the discharge port 12 without receiving the resistance of the throttle hole 13. As a result, the power resistance during high load operation can be relaxed.

本発明におけるリニア駆動式圧縮機の断面図である。It is sectional drawing of the linear drive type compressor in this invention. 同じく要部の分解斜視図である。It is an exploded perspective view of the principal part similarly. 低負荷時における図１に示すＡ部の拡大図である。It is an enlarged view of the A section shown in Drawing 1 at the time of low load. 高負荷時における図１に示すＡ部の拡大図である。It is an enlarged view of the A section shown in FIG. 1 at the time of high load.

符号の説明Explanation of symbols

１ リニア駆動式圧縮機
２ ハウジング
３ ヨーク
４ コイル
５ 永久磁石
６ 可動鉄心
７ ピストンロッド
８ ピストン
９ シリンダ
１０ シリンダヘッド
１１ 弾性パッキン
１２ 吐出口
１３ 絞り孔
１４ 吸気ポート
１５ 吸気室
１６ 吸入口
１７ 吸入弁
１８ 吐出口
１９ 吐出弁
２０ ボルト
２１ 気体 DESCRIPTION OF SYMBOLS 1 Linear drive type compressor 2 Housing 3 Yoke 4 Coil 5 Permanent magnet 6 Movable iron core 7 Piston rod 8 Piston 9 Cylinder 10 Cylinder head 11 Elastic packing 12 Discharge port 13 Restriction hole 14 Intake port 15 Intake chamber 16 Intake port 17 Intake valve 18 Discharge port 19 Discharge valve 20 Bolt 21 Gas

Claims (2)

ピストンがシリンダ内を往復移動することにより、前記シリンダ内で圧縮された気体を吐出口から吐出するようにしたリニア駆動式圧縮機において、
前記吐出口に通じる部分に、前記気体の圧力に応じて、前記気体が通過する口径が弾性変形により伸縮可能な絞り孔を設けたことを特徴とするリニア駆動式圧縮機。 In a linear drive compressor in which the piston is reciprocated in the cylinder to discharge the gas compressed in the cylinder from the discharge port.
A linear drive compressor characterized in that, in a portion communicating with the discharge port, a throttle hole through which the diameter of the gas passes can be expanded and contracted by elastic deformation according to the pressure of the gas. 前記絞り孔を、前記シリンダとシリンダヘッドとの間をシールする弾性パッキンに設けたことを特徴とする請求項１記載のリニア駆動式圧縮機。   2. The linear drive compressor according to claim 1, wherein the throttle hole is provided in an elastic packing that seals between the cylinder and the cylinder head.
JP2007068606A 2007-03-16 2007-03-16 Linear drive compressor Expired - Fee Related JP4860515B2 (en)

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JP4860515B2 JP4860515B2 (en) 2012-01-25

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010087438A1 (en) * 2009-01-30 2010-08-05 日東工器株式会社 Air pump
WO2020066626A1 (en) * 2018-09-25 2020-04-02 日立オートモティブシステムズ株式会社 Compressor device
JP2020143747A (en) * 2019-03-07 2020-09-10 株式会社Ｉｈｉ回転機械エンジニアリング Gasket and fluid device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003176779A (en) * 2001-12-10 2003-06-27 Toyota Industries Corp Flow detector and displacement controller for variable displacement compressor
JP2004019650A (en) * 2002-06-17 2004-01-22 Samsung Electronics Co Ltd Device and method of controlling linear compressor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003176779A (en) * 2001-12-10 2003-06-27 Toyota Industries Corp Flow detector and displacement controller for variable displacement compressor
JP2004019650A (en) * 2002-06-17 2004-01-22 Samsung Electronics Co Ltd Device and method of controlling linear compressor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010087438A1 (en) * 2009-01-30 2010-08-05 日東工器株式会社 Air pump
JP2010174801A (en) * 2009-01-30 2010-08-12 Nitto Kohki Co Ltd Air pump
US8770951B2 (en) 2009-01-30 2014-07-08 Nitto Kohki Co., Ltd. Air pump
WO2020066626A1 (en) * 2018-09-25 2020-04-02 日立オートモティブシステムズ株式会社 Compressor device
CN112840125A (en) * 2018-09-25 2021-05-25 日立安斯泰莫株式会社 Compressor device
JPWO2020066626A1 (en) * 2018-09-25 2021-08-30 日立Astemo株式会社 Compressor device
JP2020143747A (en) * 2019-03-07 2020-09-10 株式会社Ｉｈｉ回転機械エンジニアリング Gasket and fluid device
JP7267782B2 (en) 2019-03-07 2023-05-02 株式会社Ｉｈｉ回転機械エンジニアリング Gasket and fluid system

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