• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a suction valve, a compressor for a gaseous medium compressor, and a method for controlling a suction valve. The suction valve comprises: - a body (1), - an inlet duct (9) formed through a body for introducing a gaseous medium into the inlet valve on its inlet side, - a discharge chamber (10) formed through the body to remove a gaseous medium from the suction valve at its outlet side, arranged at least partially inside the body (1), - the piston (4), which is submerged in the piston and arranged in the first direction of the cylinder (7), i.e. towards the inlet and in the other direction, i.e. away from the inlet channel, - two or more flow paths of the control medium (5, 6, 17) formed through the body into the cylinder space for guiding the control medium into and out of the cylinder space, and thus for moving the piston, - for closing and closing the flow of the gaseous medium (2), if desired, which closing member (2) is coupled to the piston for movement with the piston.
    公开号:FI20175511A1
    申请号:FI20175511
    申请日:2017-06-05
    公开日:2018-12-06
    发明作者:Vesa Ropponen
    申请人:Pneumaxpert Oy；
    IPC主号:
    专利说明:

    Gaseous Media Compressor Compressor Intake Valve, Compressor, and Method for Controlling Compressor Intake Valve
    TECHNICAL FIELD OF THE INVENTION
    The invention relates to a suction valve for a gaseous media compressor as set forth in the preambles of the independent claims below, to a compressor and to a method for controlling the suction valve of a compressor.
    BACKGROUND OF THE INVENTION
    Compressor suction valves are known per se. For example, CN 201779018 U, US 5533873 A and DE 19916768 A1 disclose various suction valves and their control system.
    There are many disadvantages to prior art solutions. Often, structures are large and slow, for example, compressor start-up is slow if the fluid flow path of the compressed medium does not open fast enough. Liquid medium-controlled suction valves may accumulate gas, which will interfere with valve operation. Frictional forces on valve seals, such as the piston, are often high. If large amounts of hot or cold air flow through the valve, the valve temperature may become unfavorable. For example, outdoor equipment in the winter is prone to excessive cooling. Excessive cooling reduces the reliability of the seals and causes the lubricants to stiffen, thus reducing the reliability of the entire system.
    PURPOSE OF THE INVENTION
    The object of the present invention is to reduce or even eliminate the above-mentioned problems in the prior art.
    One object of the present invention is to provide a reliable suction valve for a compressor.
    20175511 prh 05 -06- 2017
    It is an object of the present invention to provide a suction valve for a compressor, the operation of which can be precisely and quickly controlled.
    One object of the present invention is to provide a suction valve for a compressor 5 whose body temperature is controllable.
    DESCRIPTION OF THE INVENTION
    To accomplish the above purposes, the compressor suction valve, compressor and method of the invention and other objects of the invention are characterized in what is disclosed in the appended independent claims.
    The application examples and advantages mentioned herein apply, mutatis mutandis, to the compressor inlet valve of the invention, the compressor and the method, although not always specifically mentioned.
    A typical suction valve for a gaseous media compressor according to the invention comprises
    - body,
    - an inlet duct formed through the body to introduce a gaseous medium into the suction valve at its inlet side,
    - an outlet duct formed through the body to remove gaseous medium from the suction valve on its outlet side,
    - a cylinder space arranged at least partially inside the body,
    - a piston disposed in the cylinder space in a first direction, i.e. towards the inlet, and in a second direction, away from the inlet,
    - two or more control fluid flow paths formed through the housing to the cylinder space for introducing the control medium into and out of the cylinder space and thereby moving the piston,
    - a closure member disposed in the inlet duct to close it if desired and which genitalia is connected to the piston to move with its movement,
    A typical piston of the invention is a plunger.
    20175511 prh 05 -06- 2017
    A typical compressor according to the invention comprises a suction valve according to the invention, the outlet of which is connected to the inlet of the compressor.
    A typical method of controlling the suction valve of a gaseous media compressor 5 according to the invention comprises at least the following steps:
    introducing a gaseous medium into the suction valve inlet side into the suction valve inlet;
    removing gaseous medium from the outlet side of the suction valve to the suction valve from the outlet duct;
    - moving the piston in the suction valve cylinder space arranged at least partially within the suction valve body, in the first direction, i.e. towards the inlet, and in the second direction, away from the inlet;
    closing the inlet duct, if desired, by means of a genital member which is coupled to the piston so as to move with the movement of the piston;
    The piston of the invention is a recessed piston, wherein
    - guiding the control medium through two or more flow paths of the control medium through and through the suction valve body to the cylinder space and thereby moving the piston and genital by controlling the pressure of the control medium in the cylinder space.
    In one embodiment of the invention, the suction valve comprises a piston spring arranged between the cylinder head and the piston, which is arranged to exert a piston displacement force on the piston. A spring exerts a force on the piston, which tends to move the piston so-called. its basic position. Depending on the application of the valve and the situation 25, the basic position may be either an open position or a closed position. The spring makes the valve more efficient.
    In one embodiment of the invention, the suction valve comprises a gut seal which is arranged to seal between the gut member and the sealing surface of the inlet duct when the inlet duct is to be lubricated.
    In one embodiment of the invention, the genitalia is movably coupled to the piston and is provided with a genital spring disposed therebetween.
    20175511 prh 05 -06- 2017 a force for moving the closure member in the first direction. This solution allows the genital to move to compensate for pressure differences and / or to prevent backflow through the suction valve, even if the piston does not move.
    In one embodiment of the invention, a piston-bearing bearing surface is provided between the suction valve cylinder space and the inlet passage, to which is attached a piston clearance seal arranged to seal the bearing surface and piston surface clearance. The invention provides a simple and reliable structure.
    In one embodiment of the invention, at least one control medium flow path is arranged to lead to a clearance of the bearing surface and the piston surface outside the cylinder space. This flow path can easily reduce the pressure on the piston clearance seal. The piston gap seal may be located, for example, in said gap or in the post-clearance space. This reduces seal friction and increases seal life. It is advantageous for the smooth operation of the valve if the seal frictions can be kept low.
    In one embodiment of the invention, the suction valve comprises a degassing conduit arranged to guide a fluid flow path from the cylinder space, typically from its upper part. It is important for the operation of the control arrangement that as much of the gases as possible, even all the gases, have been removed from the cylinder space and from the channels of the control medium.
    In one embodiment of the invention, the flow paths of the control medium lead to a storage medium of the control medium.
    In one embodiment of the invention, the suction valve body has a central axis, and the piston and closing member are disposed on the central axis and movable in the first and second directions in the center axis.
    In one embodiment of the invention, the control medium is a liquid medium, for example a hydraulic oil. When the suction valve flows through the compressor
    20175511 prh 05 -06- 2017 To control the amount of medium accurately, it is preferable to use a fluid medium as the control medium.
    One major advantage of the invention is the ability to control the temperature of the suction valve, for example its body, by the temperature of the pressure medium. Large quantities of gas, for example air from outside air, can flow through the valve of the invention, which tends to effectively change the temperature of the valve. In the suction valve of the invention, the heat or coolness of the control medium used to control the valve can be utilized. It can be used to heat or cool, for example, the valve body or the flow duct. In the embodiment of the invention, the parts communicating with the pressure medium, e.g., the cylinder space, the piston, the spring and the pressure medium duct system may be located inside the suction valve body. For example, these parts may be located inside the outlet duct and the surrounding suction valve body portion. If the body is made of 15 particularly heat-conductive materials, such as aluminum, the temperature control of the structure is further enhanced.
    It is possible, in connection with the suction valve according to the invention, to provide a pressure medium heating device or a cooling device and temperature control devices. In this way, the temperature control of the 20 suction valves can be made very accurate if desired.
    BRIEF DESCRIPTION OF THE FIGURES
    The invention will now be described in more detail with reference to the accompanying schematic drawing in which
    Figure 1 shows a suction valve according to the invention and a partial enlargement thereof; and Figure 2 illustrates the attachment of a suction valve according to the invention to a compressor screw unit and a partial enlargement thereof.
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
    Some of the corresponding parts in the various figures and embodiments are used for the sake of clarity by the same reference numerals.
    20175511 prh 05 -06- 2017
    Figure 1 shows, placed on a compressor input-side suction valve manifold intended for the flowing medium according to the invention. By means of the suction valve, the flow between the inlet duct 9 and the outlet duct 10 can be closed, adjusted and its backflow prevented. The suction valve comprises a body 1 fitted with a family member 2 and a plunger 4 movable in the direction of the central axis K.
    A spring 3 is disposed for moving the genital member 2 which tends to move the genital relative to the piston against the sealing surface 12 at the lower end of the inlet channel 9. At the lower end of the piston 4 is a spring 8 disposed parallel to the central axis K, the function of which is to move the piston to its base position, i.e. lower position 10, when the pressure of the control medium has been discharged through the flow paths 5, 6, 17. For closing and / or controlling the flow, control pressure is typically applied and discharged through channels 5 and 6 into and out of the barrel 7.
    For example, if the valve is in the open position, that is, when the flow depresses the genital member 2 in the figure, when the compressor drive motor stops, the inventive design allows the genital member 2 to move upward, i.e. to the closed position. The spring 3 assists in moving the genitalia to the closed position, i.e. upwards in the pattern. In this way, backflow between the inlet channel 9 and the outlet channel 10 of the valve 20 can be prevented.
    The valve shown in Fig. 1 may be mounted, for example, as shown in Fig. 2, to the compressor screw unit 23. The valve is secured to the compressor body such that the lower valve flow channel or outlet 10 is intimately connected to the suction port 21 or
    When the compressor starts, a negative pressure is formed in the outlet duct 10, which acts on the closing member 2. The spring 3 is compressed and the genitalia moves downward in the open position. In this case, air or other compressible gas is allowed to flow through the inlet 9 and the outlet 10 to the compressor. The compressor begins to produce pressure which is discharged through pressure port 22. When the pressure has reached the desired level, the control system of the compressor, for example, through the connection channel 6, becomes a pressurized control medium in the cylinder bore 7. Thus, the piston
    20175511 prh 05 -06- 2017 begins to move the closing member 2 which moves upwardly towards the inlet 9 in the image while limiting the amount of gas flowing through the inlet 9. At the same time, the control medium exits the access channel 5 via some part of the control system (not shown). Also, a suitable amount of control medium is discharged through the access channel 17. For example, the control medium may exit directly into the control medium tank line, where the pressure is lower than the control pressure prevailing in the cylinder space 7. When the control pressure changes to a suitable level, the piston 4 moves the gingival member 2 against the sealing surface 12, thereby preventing the flow of gas into the compressor.
    The parts communicating with the pressure medium, i.e. the cylinder space 7, the piston 4, the spring 8 and the pressure medium duct 5, 6, 17 are located inside the suction valve body 1. For example, these parts may be located inside the outlet duct 10 and the surrounding suction valve body 1. In this way, the heat or coolness of the control medium used to control the valve can be used to heat or cool the suction valve.
    In the embodiment of the invention, the spring force of the spring 8 exerts a force on the piston which pushes the piston toward its basic position. A typical piston according to the invention has a so-called piston. plunger. For sealing frictions, this is an advantageous solution since only one piston clearance gasket 15 is required. During valve operation, the control pressure varies in the cylinder space 7 and thus also with the gasket 15. The increase in steering pressure increases the compression 15 against the piston surface 18. At the same time, the friction increases. It is advantageous if the pressure on the seal can be reduced by a suitable structure. In the structure shown in the figures, the flow passage 17 leads to a tank line where the pressure is below the control pressure. The clearance 19 starting from the cylinder space 7 can be made to a suitable size such that the pressure acting on the seal 15 is practically the same as the pressure on the tank line. By this arrangement it is possible to reduce the pressure on the seal 15 and thus also to reduce the friction of the seal.
    The performance of the seals is also affected by their temperature. In the structure of the figures, the piston 4 and the surrounding cylinder space 7 as well as the gasket 15 are located inside the suction valve body. Two or more control fluid flow paths lead to cylinder space 7
    5, 6, 17. One of these may be connected to the control system and another may be connected to the return flow piping or control system. Such an arrangement allows the control medium to effectively heat or cool the structure. The heat transfer is efficient especially if the material of the body 1 is aluminum, which 5 well conducts the temperatures of the structure.
    In one embodiment of the invention, compared with the example shown in the figures, flow path 5 and channel 24 may be omitted. The clearance 19 is then formed so that the pressure medium flow between the channels 6 and 17 is made such that the pressure medium is capable of effectively heating the valve body.
    At the same time, any air accumulated in the suction valve duct system is effectively removed.
    When multiple control fluid flow paths are used, the removal of air or other gas 15 from the control system is more efficient than that of a single flow path system. The escape of gases from the control system can be enhanced by placing a suitably sized channel 24 in the structure to connect the cylinder space 7 and the flow channel 17 directly to each other so that the gas does not have to pass through the clearance 19. Channel 24 is best seen in partial magnification B.
    The invention is not intended to be limited to the examples given, but the scope of the invention is defined by the independent claims. The dependent claims disclose some advantageous embodiments of the invention.
    权利要求:
    Claims (13)
    [1]
    A suction valve for a gaseous media compressor comprising:
    - the body (1),
    - an inlet conduit (9) formed through the housing to introduce a gaseous medium into the suction valve at its inlet side,
    - an outlet duct (10) formed through the body for removing gaseous medium from the suction valve on its outlet side,
    - a cylinder space (7) arranged at least partially inside the body (1),
    10 - a piston (4) disposed in the cylinder space (7) in a first direction, i.e. towards the inlet and in a second direction, away from the inlet,
    - two or more control fluid flow paths (5, 6, 17) formed through the body to guide the control medium
    15 in and out of the cylinder space and thus to move the piston,
    - a closing member (2) for controlling and closing the flow of gaseous medium, if desired, and which closing member (2) is connected to the piston to move with its movement, characterized in that the piston (4) is a plunger.
    [2]
    Suction valve according to Claim 1, characterized in that it comprises a piston spring (8) arranged between the cylinder space and the piston, which is arranged to apply a piston displacement force on the piston.
    25
    [3]
    Suction valve according to any one of the preceding claims, characterized in that it comprises a sealing member (16) arranged to seal between the closing member (2) and the sealing surface (12) of the inlet channel when the inlet channel (9) is to be closed.
    30
    [4]
    Suction valve according to any one of the preceding claims, characterized in that the closing element (2) is movably connected to the piston (4) and a closing element spring (3) is arranged between the closing element and the suction valve body, directional force.
    20175511 prh 05 -06- 2017
    [5]
    A suction valve according to any one of the preceding claims, characterized in that a bearing surface (14) supporting the piston (4) is arranged between the cylinder space (7) and the inlet channel (9), to which a piston gap seal (15) is attached
    5 arranged to seal the clearance (19) of the bearing surface (14) and the piston surface (18).
    [6]
    Suction valve according to Claim 5, characterized in that at least one control medium flow path (17) is arranged to lead from the clearance (19) of the bearing surface (14) and the piston surface (18) to the outside of the cylinder space (7).
    [7]
    A suction valve according to claim 6, characterized in that it comprises a degassing duct (24) arranged to guide a fluid flow path (17) from the cylinder space (7), typically from its upper part.
    15
    [8]
    Suction valve according to one of the preceding claims, characterized in that the flow paths (5, 6, 17) of the control medium lead to a storage medium of the control medium.
    [9]
    Suction valve according to one of the preceding claims, characterized in that the suction valve body (1) has a central axis (K), wherein the piston (4) and the genus (2) are
    20 positioned on the central axis (K) and moving in the first and second directions in the direction of the central axis (K).
    [10]
    A compressor comprising a suction valve having an outlet duct (10) connected to the suction opening (21) of the compressor, characterized in that the suction valve is
    1-9.
    [11]
    A method for controlling the suction valve of a gaseous media compressor, characterized in that the method comprises at least the following steps:
    - introducing a gaseous medium into the inlet valve on the inlet side of the inlet valve
    30 input channels (9);
    removing gaseous medium from the outlet side of the suction valve to the suction valve from the outlet duct (10);
    moving the piston (4) in the suction valve cylinder space (7) arranged at least partially inside the suction valve body (1), in the first direction, i.e. towards the inlet, and in the second direction, away from the inlet;
    closing the inlet channel (9), if desired, with the genital member (2) connected
    5 in the piston so that it moves with the piston movement;
    characterized in that the piston (4) is a recessed piston, wherein
    - guiding the control medium along the flow paths (5, 6, 17) of the control medium through and through the suction valve body (1) to and from the cylinder space (7), thereby moving the piston and genital by controlling the pressure of the control medium in the cylinder space.
    [12]
    A method according to claim 11, characterized in that the control medium is a liquid medium, for example a hydraulic oil.
    [13]
    Method according to one of the preceding claims 11 or 12, characterized in that the pressure medium is introduced from the bearing (14) of the bearing surface (14) and the piston surface (19) between the cylinder space (7) and the inlet channel (9) outside the cylinder space (7) pressure on the clearance (19) or piston gap seal (15) located in the space after the clearance (19).
    Suction valve according to one of the preceding claims, characterized in that the flow paths (6, 17) of the control medium lead to a storage medium of the control medium.
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    AT403948B|1994-07-29|1998-06-25|Hoerbiger Ventilwerke Ag|INTAKE CONTROL VALVE FOR ROTATIONAL COMPRESSORS|
    US6027315A|1997-09-03|2000-02-22|Vmac Division Of Mangonel Corporation|Inlet control valve for compressors|
    DE19916768A1|1999-03-04|2000-09-14|Kaeser Kompressoren Gmbh|Device and method for controlling a compressor by throttling the intake volume flow|
    ITVI20010086A1|2001-04-19|2002-10-21|Virgilio Mietto|COMPRESSED AIR INTAKE REGULATOR IN A TANK|
    US8157538B2|2007-07-23|2012-04-17|Emerson Climate Technologies, Inc.|Capacity modulation system for compressor and method|
    CN201344129Y|2008-12-12|2009-11-11|上海飞和实业集团有限公司|Air inlet capacity control valve for air compressor|
    CN201779018U|2010-07-30|2011-03-30|上海斯可络压缩机有限公司|Oil pressure control air inlet valve for oilless screw compressor|
    CN102817850B|2012-08-01|2015-03-25|南通市红星空压机配件制造有限公司|High-degree integration air inlet control valve of screw air compressor|
    CN105402122A|2014-08-17|2016-03-16|西安格瑞德化工新材料有限公司|Nature gas compressor with good integral airtightness and steady and dependable loading and unloading|
    法律状态:
    2018-10-12| PC| Transfer of assignment of patent|Owner name: POLARTEKNIK OY |
    2019-03-07| PC| Transfer of assignment of patent|Owner name: PIMATIC OY |
    2021-08-31| FG| Patent granted|Ref document number: 129182 Country of ref document: FI Kind code of ref document: B |
    优先权:
    申请号 | 申请日 | 专利标题
    FI20175511A|FI129182B|2017-06-05|2017-06-05|Inlet valve for compressor pressing gaseous medium, compressor and method for controlling the inlet valve of the compressor|FI20175511A| FI129182B|2017-06-05|2017-06-05|Inlet valve for compressor pressing gaseous medium, compressor and method for controlling the inlet valve of the compressor|
    PCT/FI2018/050422| WO2018224734A1|2017-06-05|2018-06-05|Inlet valve for compressor pressing gaseous medium, compressor and method for controlling the inlet valve of the compressor|
    EP18813822.6A| EP3635255A4|2017-06-05|2018-06-05|Inlet valve for compressor pressing gaseous medium, compressor and method for controlling the inlet valve of the compressor|
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