• 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:
    PURPOSE: A discharge valve assembly of fluid machinery is provided to reduce fluid resistance. CONSTITUTION: An assembly comprises a valve housing(10) having a valve receiving space(11) fluidically connected with discharge side of a compression chamber, and receiving a valve, a discharge hole(12) formed on the other side of the valve receiving space and a backflow hole(13) formed on the other side of the valve receiving space to be separated from the discharge hole, and fixed in a discharge chamber; and a sliding valve(20) placed between the discharge side of the compression chamber and the discharge hole of the valve housing, inserted into the valve receiving space, and slid by difference of pressure between the compression chamber and the discharge chamber to open and close the discharge hole.
    公开号:KR20030018848A
    申请号:KR1020010053429
    申请日:2001-08-31
    公开日:2003-03-06
    发明作者:장영일；구인회
    申请人:엘지전자 주식회사；
    IPC主号:
    专利说明:

    Discharge valve assembly of fluid machine {DISCHARGE VALVE ASSEMBLY FOR COMPRESSOR}
    [10] The present invention relates to a discharge valve assembly for limiting the discharge of the pressurized fluid in the fluid machine, and more particularly to a discharge valve assembly of the fluid machine that can be opened and closed in a sliding manner to reduce the fluid resistance during discharge and prevent the reverse flow of the discharged fluid in advance It is about.
    [11] In general, a fluid machine sucks, compresses, and discharges a fluid into a cylinder by using a rotational or straight motion of a piston coupled to a drive motor. The cylinder of the fluid machine includes a discharge valve assembly for restricting the discharge of fluid. have.
    [12] Well-known discharge valve assemblies include a reed valve as shown in FIG. 1 or a piston valve as shown in FIG.
    [13] The reed valve restricts the discharge of the compressed fluid by installing the rectangular valve 1 fixed to one end to the cylinder or the valve plate 2 and the other end to be free to face the discharge port 2a. 1) basically blocks the discharge port 2a, and when the fluid is discharged, if the pressure ratio rises together with the loss due to the fluid resistance, the valve 1 opens and closes, causing a valve burn. 3 is a retainer for limiting the opening degree of the valve.
    [14] On the other hand, the piston valve has to be discharged while the compressed fluid is discharged while lifting the heavy valve (4) up, and not only the fluid resistance during the discharge, but also during the high pressure ratio operation, the valve (4) does not smoothly prevent the back flow of the compressed fluid There is a disadvantage in that a loss due to backflow occurs while the valve 4 rises and falls inside the valve housing 6 fixed to the cylinder or the valve plate 5 during abnormal operation, and also generates a valve collision sound.
    [15] In the figure, 5a is a discharge port of a cylinder or a valve plate, and 6a and 6b are a discharge hole and a backflow hole of a valve housing.
    [16] The present invention has been made in view of the problems of the conventional reed valve or the piston valve as described above, the discharge valve assembly of the fluid machine that can reduce the fluid resistance, reduce noise and effectively prevent the back flow of the fluid during the discharge of the compressed gas It is an object of the present invention to provide.
    [1] 1 and 2 are schematic longitudinal sectional views showing examples of a discharge valve assembly of a conventional fluid machine.
    [2] Figure 3 is an exploded perspective view showing a breakdown valve assembly of the fluid machine of the present invention.
    [3] 4 and 5 are longitudinal cross-sectional view showing the operation of the discharge valve assembly of the fluid machine of the present invention.
    [4] ** Description of symbols for the main parts of the drawing **
    [5] 1 cylinder or valve plate 1a discharge port
    [6] 10: valve housing 11: valve accommodation space
    [7] 12 discharge hole 13 counter flow hole
    [8] 13a: through part 13b: groove part
    [9] 20: sliding valve 21: discharge flow path groove
    [17] In order to achieve the object of the present invention, it is in communication with the discharge side of the compression chamber and at the same time to form a valve receiving space for accommodating the valve and to form a discharge hole on the other side of the valve receiving space and the valve at a predetermined interval with the discharge hole A valve housing having a reverse flow hole formed on the other side of the accommodation space and fixedly installed in the discharge chamber, and a discharge side of the compression chamber and the valve housing so as to slide and open the discharge hole according to the pressure difference between the pressure of the compression chamber and the pressure of the discharge chamber. It is provided with a discharge valve assembly of a fluid machine, characterized by consisting of a sliding valve which is located between the discharge holes to slide into the interior of the valve receiving space.
    [18] Hereinafter, the discharge valve assembly of the fluid machine according to the present invention will be described in detail based on the embodiment shown in the accompanying drawings.
    [19] Figure 3 is an exploded perspective view showing a breakdown valve assembly of the fluid machine of the present invention, Figures 4 and 5 are longitudinal cross-sectional view showing the operation of the discharge valve assembly of the fluid machine of the present invention.
    [20] As shown in the drawing, the discharge valve assembly according to the present invention includes a valve housing 10 which is fixedly installed at the front end surface of the cylinder or the front end surface of the valve plate 1 in communication with the discharge port 1a of the compression chamber. The sliding valve 20 accommodates the housing 10 in a radial direction and slides according to the difference between the pressure Pd of the discharge chamber and the pressure Pc of the compression chamber, and opens and closes the discharge port 1a.
    [21] The valve housing 10 is formed in a cross-sectional shape of the “overset” in the front projection so that the valve accommodation space 11 communicating with the discharge port 1a is provided on the surface in contact with the cylinder or the valve plate 1, and the upper surface The discharge hole 12 and the counter flow hole 13 communicating with the valve accommodation space 11 on the side are formed at regular intervals.
    [22] The discharge holes 12 and the counter flow holes 13 are preferably formed at intervals where only one of them can necessarily overlap the moving range of the sliding valve 20.
    [23] The discharge hole 12 is preferably disposed on the same vertical line as the discharge port 1a of the cylinder or the valve plate 1 in consideration of fluid resistance when discharging the compressed gas, and is formed larger than the diameter of the discharge port 1a. .
    [24] The backflow hole 13 is a through portion 13a penetrating through the valve accommodation space 11 and a groove portion 13b provided in series with the through portion 13a and formed with a groove in the side surface of the valve accommodation space 11. Is done. The through part 13a faces the plane of the sliding valve 20 and the groove part 13b is formed to face one side of the sliding valve 20.
    [25] In addition, the groove portion 13b may be formed on one side of the sliding valve 20 so as to be included in the counter flow hole 13.
    [26] The sliding valve 20 has a " " in frontal projection so as to have a discharge flow path groove 21 always in communication with the discharge port 1a of the cylinder or valve plate 1 on the contact surface with the cylinder or valve plate 1; It is formed into a cross-sectional shape.
    [27] The discharge flow path groove 21 is formed in a straight line or oblique line or a curve so as to face the reverse flow hole 13 of the valve housing 10 at the center of the bottom surface of the sliding valve 20.
    [28] On the other hand, both sides of the valve housing space 11 of the valve housing 10 and the front and rear sides of the corresponding sliding valve 20 on the detachable surface between the valve housing 10 and the sliding valve 20, the impact noise A shock absorbing member (not shown) may be mounted to prevent it.
    [29] The discharge valve assembly of the fluid machine of the present invention as described above has the following effects.
    [30] That is, as shown in FIG. 4, when the pressure Pc of the compression chamber is higher than the pressure Pd of the discharge chamber, the compressed gas ejected through the discharge port 1a of the compression chamber is discharge flow path groove of the sliding valve 20 ( 21, which is directed toward the rear side of the valve, increases the compressed gas directed to the rear side of the valve 20, and pushes the sliding valve 20 to the repulsive force with the side of the valve accommodation space 11, the sliding valve 20 ) Is pushed to the opposite side of the valve accommodation space 11 of the valve housing 10, the discharge hole 12 is opened, and the compressed gas discharged from the compression chamber is smoothly discharged to the discharge chamber.
    [31] On the other hand, when the compressor is stopped or the over-vacuum or over-compression operation is performed, the pressure Pc of the compression chamber is lower than the pressure Pd of the discharge chamber as shown in FIG. It penetrates into the penetrating part 13a and the groove part 13b of 13, and pushes out the sliding valve 20 by the repulsive force, and the sliding valve 20 has the pressure Pd of the discharge chamber compared with the pressure Pc of the compression chamber. The larger the c) is pushed toward the rear side to block the discharge hole 12 and to block the backflow hole 13 and the discharge port 1a of the compression chamber to prevent the discharged compressed gas from flowing back into the compression chamber.
    [32] In this way, the sliding valve slides smoothly in the valve housing space of the valve housing according to the pressure difference between the pressure of the compression chamber and the discharge chamber, thereby limiting the discharge of the compressed gas, and the discharge port of the compression chamber and the discharge hole of the valve housing are in the same vertical line. As it is located at, it is possible to improve the compressor performance by greatly reducing the fluid resistance.
    [33] In addition, the high reaction speed of the valve can effectively prevent the reverse flow of the discharged gas, the sliding movement during the opening and closing of the valve, the discharge gas or compressed gas in the front and rear sides as well as the buffering role as well as the buffer member on both sides In addition, the collision noise of the valve can be effectively reduced.
    [34] The discharge valve assembly of the fluid machine according to the present invention comprises a valve housing having a valve accommodation space and a sliding valve that restricts discharge of compressed gas while sliding inside the valve accommodation space, thereby providing a sliding valve at the time of discharge of the compressed gas. The fluid resistance can be greatly reduced by completely opening the discharge side of the compression chamber and the discharge hole of the valve housing.
    [35] In addition, by restricting the discharge of the compressed gas as the valve slides, the reaction speed of the valve is increased, thereby effectively preventing the reverse flow of the discharged gas and effectively reducing the collision noise between the valve and the valve housing.
    权利要求:
    Claims (4)
    [1" claim-type="Currently amended] A valve receiving space is formed in communication with the discharge side of the compression chamber and at the same time, a discharge hole is formed at the other side of the valve accommodation space, and a counter flow hole at the other side of the valve accommodation space is spaced apart from the discharge hole. A valve housing which is formed and fixed to the discharge chamber,
    And a sliding valve which is located between the discharge side of the compression chamber and the discharge hole of the valve housing so as to slide in accordance with the pressure of the compression chamber and the pressure difference between the discharge chamber and slides into the valve accommodation space. Discharge valve assembly of the fluid machine.
    [2" claim-type="Currently amended] The method of claim 1,
    The reverse flow hole of the valve housing includes a through part formed to penetrate to correspond to the plane of the sliding valve, and a groove part formed in the side of the valve accommodation space to be connected to the through part so as to correspond to one side of the sliding valve. Discharge valve assembly of the fluid machine.
    [3" claim-type="Currently amended] The method of claim 1,
    The sliding valve includes a fluid flow path groove having a surface in contact with the discharge side of the compression chamber and always in communication with the discharge side of the compression chamber to allow the fluid discharged from the compression chamber to move the valve body in the opening direction. Discharge valve assembly.
    [4" claim-type="Currently amended] The method of claim 1,
    And a buffer member for reducing collision noise in a valve receiving space of the valve housing or a detachable surface of a sliding valve corresponding thereto.
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    同族专利:
    公开号 | 公开日
    CN1403714A|2003-03-19|
    CN1219980C|2005-09-21|
    US6748971B2|2004-06-15|
    US20030070712A1|2003-04-17|
    JP2003106468A|2003-04-09|
    KR100417426B1|2004-02-05|
    JP3605094B2|2004-12-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2001-08-31|Application filed by 엘지전자 주식회사
    2001-08-31|Priority to KR10-2001-0053429A
    2003-03-06|Publication of KR20030018848A
    2004-02-05|Application granted
    2004-02-05|Publication of KR100417426B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR10-2001-0053429A|KR100417426B1|2001-08-31|2001-08-31|Discharge valve assembly for compressor|
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