• 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:
    1461039 Rotary positive-displacement fluidmachines KUHLAUTOMAT VEB 21 Feb 1975 [22 Feb 1974] 7439/75 Heading E1F In a meshing-screw compressor, Figs. 1, 3 and 4, having male and female rotors 7, 8 and a "slide valve" 11 to regulate the delivery rate, ducts 19, 20 in the valve and a "bracket" 18 connect a delivery chamber 5 to a contracting chamber between the rotor lands and lobes, so as to equalize the pressures and thus reduce noise, when the valve is at or near to its minimum delivery position. The positions of the ducts 19, 20 may be in effect reversed, Figs. 2 and 5 (not shown). Alternatively, the ducts 19, 20 are arranged to connect the chamber 5 to a suction chamber 4 when the valve is at or near to its minimum delivery position, Fig. 6 (not shown).
    公开号:SU962673A1
    申请号:SU752107744
    申请日:1975-02-21
    公开日:1982-09-30
    发明作者:Моземанн Дитер；Кольберг Петер
    申请人:Феб Кюльаутомат (Фирма)；
    IPC主号:
    专利说明:

    (SCREW COMPRESSOR
    one
    The invention relates to a pump compressor building and concerns oil-injected screw compressors.
    Closest to the present invention is a screw compressor, comprising a housing with end caps, inlet and outlet ports, suction, working, injection and discharge chambers, the latter of which is equipped with a reciprocating displacement performance regulator, made in the form of a spool grooves and located parallel to the interacting viit rotors placed in the working chamber formed by the adjoining cylindrical surfaces p b
    A disadvantage of the known compressor is the presence of pulsation of compressed gas, reducing reliability.
    The purpose of the invention is to increase reliability by reducing the pulsation of the compressed gas.
    This goal is achieved by the fact that the housing is provided with a cantilever element placed in the discharge chamber and serving as a guide for the slide, and there are grooves in it, and in the slide there is at least one groove forming channels to communicate the higher pressure chamber with the lower chamber pressure when moving the spool, corresponding to close to the minimum or minimum compressor capacity.
    The grooves and grooves are made on the side surfaces of the cantilever element and the spool, forming channels for the communication of the working and injection chambers among themselves.
    There are grooves and a hole in the walls of the discharge chamber, and a slot in the wall of the working chamber, which form channels with grooves and grooves for communication between the working and suction chambers. In addition to this, the groove in the spool is molded in its lower part, forming channels with channels with channels for communicating the injection and suction chambers with each other. FIG. 1 shows the proposed compressor, a longitudinal section; in fig. 2 shows section A-A in FIG. 1 illustrating an embodiment of a compressor when the grooves and grooves are formed on the side surfaces of the cantilever element and the spool; in fig. 3 shows section A-A in FIG. 1 illustrating an embodiment of a compressor, when grooves are made in the walls of the discharge chamber; in fig. section bb in fig. 2; in fig. 5 is a section through BB in FIG. 3 in FIG. 6 spool with a groove made in its lower part. I, Screw compressor contains case 1 with end caps 2, inlet and outlet ports 3 and suction 5, working 6, discharge and discharge 8 chambers, the last of which is equipped with a reciprocating variable performance regulator in the form spool 9 with projections 10 forming the adjusting edges and located parallel to the interacting screw rotors 11 placed in the working chamber 6 formed by adjoining cylindrical surfaces. The housing 1 is provided with a cantilever element 12, placed in the discharge chamber 7 and serving as a guide for the spool 9, and has grooves 13 in it, and in the spool 9. with at least one groove I forming channels — for communicating a higher chamber pressure with a chamber of lower pressure when moving the spool 9 corresponding to close to the minimum or minimum compressor capacity. The grooves 13 and the grooves H can be made on the side surfaces of the cantilever element 12 and the spool 9, forming channels for the communication of the working and discharge chambers 6 and 7 between them. An embodiment of the compressor provides for the implementation in the walls of the discharge chamber 8-grooves 15 and holes 16, and in the walls of the working chamber 6 - slots 17, which form the grooves 13 and T-slots with channels to communicate the working 6 and suction 5 cameras. between themselves. Another embodiment of the compressor provides for the implementation of the groove k in the spool 9 in its lower part, forming with the grooves 13 channels for the communication of the injection and suction chambers 7 and 5 between themselves. When the compressor is working, the valve 9 when its movement adjusts its performance. Moreover, at its different positions due to the presence of a groove (grooves) T in it, and in the cantilever element 12 of the grooves 13, channels are formed to communicate a higher pressure chamber with a lower pressure chamber: working and discharge chambers 6 and 7 (Fig. 2) ; working and suction chambers 6 and 5 (Fig. 3) -; injection and suction chambers 7 and 5 (Fig. 6) between them. At the positions of the spool 9 corresponding to the minimum or minimum performance close, the working medium flows through the grooves 13 and the grooves 1 from the discharge chamber 7 into the working chamber 6, as a result of which the pressure rises in the latter before the outlet window k establishes a connection between these cameras. Due to this, by the time the discharge port k is opened, the pressure difference between chambers 5 and 6 is reduced, due to which the pulsations of the compressed gas are stopped. When the position of the spool 9 corresponds to the maximum supply of the working medium, the grooves 13 and the grooves I are automatically closed by the side walls of the spool 9- For the compressor, operating with oil injection, the grooves k are filled with oil as soon as they are closed, as the oil is centrifuged outside by rotating helical rotors 11. For the position of the spool 9 of the corresponding 100% supply of working medium, the grooves And from the side of the working chamber 6 are in the region of low pressures, so that they do not have a harmful effect on the degree of supply and performance be a compressor. The proposed improvements significantly reduce compressed gas pulsations, which effectively increases the reliability of the screw compressor.
    权利要求:
    Claims (3)
    [1]
    1. Screw compressor, comprising a housing with end caps, inlet and outlet ports, suction, working, discharge and discharge chambers, in the latter of which a performance regulator is installed with reciprocating movement, made in the form of a spool with grooves and located parallel to the interacting screw rotors placed in a working chamber formed by conjugated cylindrical surfaces, characterized in that, in order to increase reliability by reducing pulsations of compressed gas, the housing is provided with a cantilever element placed in the discharge chamber and serving as a guide for the spool, and there are grooves in it, and in the spool at least one groove, forming channels for communication of the higher pressure chamber with the lower pressure chamber at
    moving the spool corresponding to the minimum or minimum compressor capacity.
    five ,
    [2]
    2. A compressor according to claim 1, about a tl, which is characterized by the fact that the groove and. the grooves are made on the side surfaces of the cantilever element and the spool, forming channels for the communication of the equal barrels and the injection chambers among themselves.
    [3]
    3. The compressor according to claim 1, -o tl and h and y, and with the fact that in the walls of the discharge chamber are made grooves and hole, and in the wall of the working chamber - a slit, forming channels with grooves and grooves working and suction chambers among themselves.
    . A compressor according to Claim 1, dt and 0, which is due to the fact that the groove in the spool is made in its lower part, to form; grooves (i: analytes for communicating the injection and suction chambers among themselves.
     Information sources,
    taken into account in the examination, 1. Patent of England H 1108570,
    0 cl. F 1 F, publ. 1568.
    Af
      // / T
    Fig. "
    /four /
    FIG. five
    f2 7
     6 f1 to / 7
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    同族专利:
    公开号 | 公开日
    DK67575A|1975-11-03|
    DE2501451A1|1975-08-28|
    NL184580C|1989-09-01|
    FR2262210A1|1975-09-19|
    NL7501233A|1975-08-26|
    SE7501980L|1975-08-25|
    DK139689C|1979-09-10|
    CS180815B1|1978-02-28|
    SE398912B|1978-01-23|
    FR2262210B3|1977-10-28|
    DK139689B|1979-03-26|
    GB1461039A|1977-01-13|
    NL184580B|1989-04-03|
    DE2501451C2|1985-10-31|
    DD110920A1|1975-01-12|
    引用文献:
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    RU2538188C1|2013-08-20|2015-01-10|Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Омский государственный технический университет"|Multipurpose spur displacement machine|NO117317B|1964-03-20|1969-07-28|Svenska Rotor Maskiner Ab|
    US3367562A|1966-06-23|1968-02-06|Atlas Copco Ab|Means for unloading and controlling compressor units|JPS5627716B2|1978-06-14|1981-06-26|
    DE3414039C2|1984-04-13|1988-04-21|Aerzener Maschinenfabrik Gmbh, 3251 Aerzen, De|
    DE10326466B4|2003-06-12|2016-03-17|Gea Refrigeration Germany Gmbh|Slide with start unloading|
    EP2089609A4|2006-12-05|2013-01-09|Carrier Corp|Integral slide valve relief valve|
    CN106151041B|2016-08-22|2018-07-10|珠海格力电器股份有限公司|Guiding valve and helical-lobe compressor and Screw chiller equipped with the guiding valve|
    TWI666387B|2017-10-17|2019-07-21|復盛股份有限公司|compressor|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DD17674874A|DD110920A1|1974-02-22|1974-02-22|
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