JPH03502954A - Valve structures for pumps or compressors - Google Patents

Abstract

A valve arrangement for compressor with oscillating piston wings (116b) has a series of mutually angularly displaced discharge slots (119) arranged in a radially extending end wall (113) between working chamber of the machine and on oppositely disposed discharge chamber (111b). The discharge slots (119) are controlled by their respective spring-loaded valve member (112b). The valve member (112b) is inserted in the end wall (113) in a groove (121) which has a minimum opening directed towards the working chamber and a maximum opening directed towards the discharge chamber (111b). A valve seat (121a) is arranged between these openings. The inner surface of the valve is flush or substantially flush with the adjacent inner surface of the working chamber.

Description

[Detailed description of the invention] Valve structures for pumps or compressors Technical field The present invention relates to a compressor having an oscillating winged piston, or a compressor having an oscillating winged piston. A mechanical device similar to that in which a winged piston has a series of mutually inclined outlets. The discharge port extends in the radial direction. The working chamber of the mechanical device and the working chamber of the mechanical device are provided between the discharge chamber and the discharge chamber arranged to face the discharge chamber, and The outlet is controlled by a respective spring-actuated valve member of the outlet. Concerning the structure of.

Background technology The intention of the invention is particularly for very high speed mechanical devices (rapid oscillating mechanical devices), e.g. For example, if the rotational speed ranges from 10,000 to 20,000 revolutions per minute (in other words For use in mechanical equipment of the type with rotational speeds ranging from 111 to 333 revolutions per second. It is to be used. Therefore, it is possible to move between the open and closed positions very quickly. What is needed is a valve structure that can

The requirements mentioned above are such that the weight of the valve member is minimal and the efficiency is high. It is a valve structure that has very good performance and can perform its functions with high precision. This valve structure A distinctive feature provided by the structure is that the valve member of the valve in the closed position or The dead space formed between the valve seat and the working chamber can be minimized. This means that

Disclosure of invention The valve structure according to the present invention is such that the valve member is inserted into the end wall of the groove, and the end wall is The smallest opening points towards the working chamber and the smallest opening faces towards the evacuation chamber. the largest opening of the valve member, and a valve seat is disposed between these openings; the inner surface is flat or nearly flat with the inner surface of the adjacent working chamber; It is characterized by

According to the invention, the valve member of the end wall itself is used to separate the discharge chamber and the working chamber. By inserting the valve seat between the It can be placed between the largest opening and the smallest opening.

In this way, it is practically possible to expose the dead space between the valve seat and the working chamber. It can be reduced to a minimum to the extent that it is not recognized by the author.

Furthermore, in accordance with the invention, the inner surface of the valve member is arranged in a working chamber adjacent to the valve member. the largest part of the valve member in the closed position by The passage between the largest opening and the smallest opening can be closed using a valve member. Ru. This minimizes dead space between the working chamber and the valve member or seat. can be completely reduced.

Furthermore, by inserting the valve member into the end wall, the valve member can be It is also possible to confine the movement of the material to the inside of the groove in the end wall; It is also possible to easily control the movement of the valve member using simple devices.

In special configurations, the valve seat is connected to the opposite opening of the discharge slot (the opening of the inlet). , and the outlet opening), and associated with the valve member. A discharge slot with an equivalent conical shape between the valve seat and the inlet opening of the discharge slot It is characterized by having a shaped part.

This allows the valve member and the discharge slot to be removed in a simple but effective manner. between open and closed positions controlled using equivalent conical surfaces of the valve member. can be moved. At the same time, when the valve is in the closed position, the valve member In addition, the evacuation hole can be almost completely blocked. Furthermore, the weight of the valve member is significantly reduced. In addition, the volume can be made relatively small.

The valve member is operated by a so-called spring-operated valve member with a structure that exhibits common elasticity. It is preferable that the This makes it simple and easy to implement. The valve member is secured to the required position using a common device that can be secured by any method that can be used. can be held in place, thereby reducing the weight and volume of this common equipment. A very small valve member can be effectively placed in the required position inside the associated discharge slot. can be retained.

A particularly preferred construction of the valve structure according to the invention is such that each valve member thereof provides a discharge elongated hole. is controlled and each valve member is individually and permanently connected to a common valve arrangement. the valve members are individually actuated against the valve members by the action of a spring, and The valve member is inserted into the end wall with the valve member inside a common groove. It is a structure characterized by the following.

the valve member comprises an annular portion, the annular portion has a finger-shaped valve member, and the finger-shaped valve member is common to the annular portion; preferably extends radially from the edge of one side of the annular part located in the plane of That's true.

This makes it possible to mutually control the valve members using an effective method, Along with this, the valve member is accurately guided to a position opposite to the valve seat of the valve in the closed position. , in order to accurately guide the valve member from the valve seat of the valve in the open position to the position where the valve member is moved. A minimum of special control equipment is required.

To achieve the most preferred and practicable control of the valve system and associated valve seats, In order to located at the outermost position, with the annular portion being axially immobile or almost immobile. The finger-shaped valve member crosses the plane that crosses the annulus. It is characterized by the fact that it can be rotated individually so as to point.

According to the invention, a valve device and an associated valve with a very thin wall structure are provided. The weight of the valve device and the weight of the associated valve member can be reduced by It is possible to make the valve member extremely lightweight and therefore to attach the valve member to the valve device particularly quickly. and in a particularly controlled manner.

Furthermore, the valve member in the valve opening position can be supported by a special support device. and the support device can be shaped to correspond to a valve device associated with the valve member. , on the other hand, the rigidity and strength of this support device is defined as the rigidity of the valve device and the valve member device. It is preferable to make it approximately larger than the strength and the strength. This support device It is also possible to hold the valve device and valve member in the desired position relative to the groove in the end wall. It is.

Brief description of the drawing Fig. 1 is a longitudinal sectional view of a compressor according to the first embodiment of the present invention, and Fig. 2 is a longitudinal sectional view of the compressor shown in Fig. 1. A perspective view of the most important parts of a compressor that pull independently from each other in the axial direction. , FIG. 3 corresponds to the part shown in FIG. 2 of the compressor which is the second embodiment of the present invention. Fig. 4 is a plan view of the valve shown in Fig. 3, Fig. 5 and Fig. FIG. 6 is a side view of both sides of the end wall body of the second embodiment of the present invention, and FIGS. 7 and 8 are FIG. 4. The valve shown in FIG. FIG. 9 is a partial view showing the valve in the open position and the closed position. A cross-sectional view along line 9--9 of the embodiment shown, FIG. 10 shows a third embodiment of the valve according to the invention. The perspective views, Figures 11 and 12, are of the valve of Figure 10 as shown in Figures 7 and 8. Figures 13 and 14 are partial views of the rocking device in the open and closed positions. of a mechanical device having a member and in which the member of the oscillating device is in two equivalent positions on the outside A cross-sectional view of the housing, and FIG. 15 is a cross-sectional view of the members of the rocking device shown in FIG. 13. It is.

BEST MODE FOR CARRYING OUT THE INVENTION In the first embodiment of the present invention shown in FIGS. 1 and 2, the compressor 10 is The stator includes a manifold housing 11, a valve device 12, and a first stator. a compressor housing member 14 having an end wall 13 and a partition wall 14a; a second end wall 15, and the compressor 10 further includes a swinging member; This swinging member has a swinging piston member 16, and this swinging piston member 16 has a cylindrical shape. This piston has a sleeve-shaped hub part 16a and several piston vanes 16b. radially outwardly from the cylindrical sleeve-shaped hub portion.

For example, if four pistons g16b are adopted, as shown in the figure, four pairs of working chambers can be employed, or in this case, as required. , the number of airfoils of the piston is increased or decreased to correspond to the logarithm of the working chamber. be able to.

In one configuration, for example, three airfoil pistons are employed and corresponding 3 pairs of working chambers, e.g. 2 pairs of low pressure chambers and 1 pair of high pressure chambers. and supplying the pressure medium from the two pairs of low pressure chambers to the high pressure chamber. The high pressure chamber can be operated by supplying the high pressure chamber.

As shown in FIG. An intake 11a is provided for the insertion, and this intake lla extends in the axial direction. is connected directly to the interior of the hub portion 16a via a duct 17 extending to the There are four pairs of first shaped boat openings (two pairs shown) extending axially in the hub portion 16a. (only the boat opening of the first shape shown) is provided, and this boat opening is elongated. This is a long inlet hole 18 with a narrow shape, and this long inlet hole is connected to the main body of the hub part. through which the inlet elongated hole is controlled by movement of the hub portion 16a; Movement of the hub portion 16a causes movement of the partition wall 14a of the compressor housing member. This is done by letting If necessary, the boat opening should be shaped as shown in the diagram. Other shapes, for example circular boat openings, are also possible.

The end wall 13 is provided with four pairs of radially extending boat openings of other shapes; This boat opening is the discharge port 19, and this discharge port 19 is long and narrow. The boat opening extends through the main body of the end wall 13 in the axial direction. Ru. The valve device 12 includes an annular support portion 12a, and four pairs of valve devices are connected from the support portion 12a. The flap 12b for the position forming member protrudes radially inward, and the flap 12b is provided so as to overlap the boat opening, that is, the elongated discharge hole 19, and this flap A flap 12b is attached to close the elongated discharge hole 19, and a flap 12b is attached to the flap 12b. The blockage of the discharge elongated hole 19 by the pressure device operated by the medium downstream of the medium outlet or by using the pressure action of the spring of the flap 12b, and this action pressure Force is stored inside the end wall 13. In practice, the valve arrangement 12 is particularly thin-walled. The valve device is made of a slightly resilient material of Fixed attachment between the edge portion and the radial outer peripheral edge portion of the manifold housing 11 be done. This valve device moves the flap 12b away from the elongated discharge hole 19. perform the action to

The compressors shown in Figures 3 to 9 are similar to those shown in Figures 1 and 2. This is a compressor as a second type of compressor.

FIG. 3 shows a support device 10 made using a wall that has high rigidity and is relatively thick. Indicates 0. This support device 100 forms a support and stop device for the valve device 112. The supporting and stopping device for this valve device is made of relatively thin walls. There is.

The valve device 112 shown in FIGS. 3 and 4 has a radially extending annular inner support portion "1". 2a, and radially and outwardly extending from the support portion 112a, four pairs of valve-shaped The annuloplasty flap 112b protrudes from the annuloplasty flap 112b. so as to overlap the elongated discharge hole 119 provided in the end wall 113 so as to correspond to the drain hole 119. It is fixedly attached to the sea urchin.

The support device 100 has a shape corresponding to the valve device 112 and has an annular radial direction. It has an inner support part 100a and four pairs of flaps 100b, and this inner support aB1 00a and the flap 100b project radially outward from the inner support portion 100a. It's out. As shown in FIGS. 7 and 8, the flap 100b of this support device is curved so as to be inclined outward from the main surface of the support portion 100a, and due to this shape, this The flap 100b of the support part of the valve device 112b of the valve device It can be supported in the open position as shown.

Using a method corresponding to the method described above, the elongated discharge hole 119 is inserted into the valvuloplasty flap. 112b so that it can be closed, and the valvuloplasty flap 112b allows drainage. The elongated hole 119 is blocked by a pressure device operated by the pressure of the medium at the downstream medium outlet, or can be performed using the pressure action of the spring of the flap 112b. . In the second form, the support portion 112a is the outermost part in the radial direction as shown in FIG. Firstly, by arranging the valve device at the radially innermost position rather than at the side, Can be fixed more easily and effectively independently of the manifold housing Ru. Second, the support portion 112a shown in FIGS. 3 and 4 is shaped with a small surface area. This reduces weight to accommodate this reduction in surface area. can be done.

The additional flap 112b of the valve device is placed in the position where the flap 100b of the support device opens. The thickness of the valve arrangement can be reduced in a simple manner by supporting the Therefore, this shape can be realized using a simple and uncomplicated method. Ru.

The elongated discharge hole 119 provided in the end wall 113 is located at the innermost point in the axial direction of the end wall 113. It is localized in the part of the side layer that transitions into the working chamber of the compressor. Twist Physically, the evacuation elongated hole 119 has a main side face facing the working chamber and an evacuation elongated hole 119. Between the substantially inner axial surface of the main surface of the end wall 113 facing the chamber It is localized in

A groove 121 is provided on the side of the radially inner annular groove 120 facing the discharge chamber. is provided, and this groove portion 121 projects radially from the side surface of this evacuation chamber. Ru.

The shapes of the annular groove 120 and the groove portion 121 are the same as the shapes of the support portion 112a and the flap 12b. This corresponds to the shape of the inner support portions 100a and 100b. Groove 121 In the center of the inlet opening, which opens to the elongated discharge hole 119, is formed. A valve seat 121a is formed in a groove 121 next to the inlet opening. The valve seat 121a forms a support surface for connecting the valve member forming flap 112b. are doing. This valve seat 121a has a groove formed by an annular spherical member as shown in FIG. The spherical member is formed at the bottom of the section 121, and this spherical member is formed by a special annular cavity device. , are formed at the bottom of the groove 121.

The thickness of the annular groove 120 and the groove portion 121 is determined from the end wall 113 in the axial direction. measured and displayed) are the support portion 112a and the flap 112b and the support portion 100. It is thicker than the combined thickness of a. As shown in FIGS. 7 and 8, the support portion 112 a and the support part 100a are fixed to the radialmost position of the annular groove 120 by the stop member 122. is also retained in the inner part. The flap 112b is arranged as shown in FIGS. 7 and 8. can be rotated independently of each other, but is limited by the contour of the support device 100. It can be installed in such a way that it can be Practically, all annuloplasty flaps 112b are between the closed position as shown in Figure 7 and the open position as shown in Figure 8. Rotates in steps. The guide surface 1 is arranged so that it slopes outward from the groove portion 121. 21b extends, and this guide surface 121b directs the compressed air to the adjacent discharge chamber. This compressed air is guided efficiently between the valve seat 121a and the flap 112b. This is done via an open passage. The shoulder portion 121C shown in the figure has a rotating flap. 7 and 8, the valve device 112 is introduced into the space between the two positions shown in FIGS. 7 and 8. Ki1. This results in an annular groove 120 in the end wall 113 associated therewith. It is possible to prevent accidental rotation between the support part 112a and the inner support part 100a. can.

A third embodiment is shown in FIGS. 10 to 12. In this form, the end wall 21 3 is provided with four pairs of discharge elongated holes 219. An overview of the structure of this form is shown in Figure 10. Further, details of this structure are shown in FIGS. 11 and 12.

The four pairs of valve devices 212b shown in these figures are supported by a common separate valve member 212. held. These valve devices 212b are further arranged in the annular groove 220 and in the annular groove 220. The method of fixing the valve device 212b, which is fixed in the groove 221, is shown in FIGS. This corresponds to the fixing method explained using FIG. the second valve device 212b, They are shown in FIG. 11 and FIG. 12, respectively. This valve device 212b includes a valve head portion 212. b' is provided, and this valve head portion 212b' forms a supporting abutment member. However, this support abutting member is connected to the valve that extends laterally outward from the elongated discharge hole 219. It is supported by the seat 221a, and a protrusion 212' is provided on this support abutting member. This protruding portion 212' has an isodominant shape (conical shape), and its dimensions are equal to that of the elongated discharge hole and the base. Essentially equivalent or slightly smaller. As a result, the protrusion 212'' Dead space formed between the working chamber and the valve seat when the valve is in the closed position The space can be almost completely blocked. The shape of the protrusion 212' and the elongated discharge hole 219 is By having approximately corresponding conical shapes, this protrusion is prevented when the valve opens and closes. The protruding part can move relatively freely inside the discharge slot, and therefore the protrusion of the discharge slot Adjustments for centering can be made automatically using the section.

The support member 212' is shown in FIGS. 11 and 12.

This support member is a support member having elasticity and repulsive force, and is a support member that has elasticity and repulsive force, and is a support member that has elasticity and repulsive force, and is 12b. Further, the support member 212' is an annular support member 212a. ', and the annular support member 212a' is connected to the annular groove 22 by the stopper 222. 0, whereas the support member flap 212c' is fixed at the support member 212 It is on a plane perpendicular to the main plane of ' and is S-shaped.

13 and 14 show the compressor 1 housing member 114 and related components. a partition wall 114a and an end wall 115 (facing the discharge chamber); A cross section of the locking piston 116 connected to the wall and the end wall is shown. Fixing pin The piston 116 has a cylindrical sleeve-shaped central portion 116a and four pairs of winged pistons 11. 6b, the winged piston 116b has a cylindrical sleeve-shaped central portion 116a. extending radially outward from the This winged piston 116b has a particularly thin wall. It is made of.

The reason for this structure is to reduce the weight of the swinging member to a minimum, and This is to enable rapid rocking. this The winged piston 116b has a substantially T-shaped cross section for reasons of strength. Ru. The stem portion 116c of this T-shaped portion has a structure that itself consists of a relatively thin wall. The shape of the stem portion 116c of this T-shaped portion is such that the inner end has the widest width. is also wide, and the width of the outer end of the stem portion 116c of this T-shaped portion is the narrowest. This stem part has a cross-shaped web, i.e. the flaps 135, 136. inserted inside. The shape of these flaps 135 and 136 is also such that the inner edge is the widest. The outer end of the stem portion 116c of this T-shaped portion has the narrowest width. . The partition 9114a is formed with cavities on opposite sides, and has a cross-sectional shape. corresponds to flaps 135 and 136, and this shape allows these cavities to When the winged piston moves the air that exists inside the tee, a flap is used to move the air inside the tee. and moved to a position outside the associated working chamber. This allows the shaking Between the moving member and the associated bulkhead 114a, there may be a large end surface and During this period, an effective buffering effect can be exerted. This intersecting web As shown in FIG. 15, a pair of lubrication grooves 135a are formed on the end surface in the axial direction.

136a is provided.

A guide groove 140 is cut out in the partition wall 114a. 0 extends in an inclined manner.

This guide groove 140 is located on the surface of the end of the partition wall, and It has a shape and dimensions corresponding to the elongated hole 119, and is connected to these parts in the axial direction and It has a shape and size that allows it to open flat both outward and outward. Also, If necessary, attach the wing piston stem to the corresponding protrusion (details not shown). (without) can be rotated and the pressure medium to be shut off is moved within it. In order to can be inserted into the cavity.

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Claims (9)

[Claims] 1. a pump, compressor, or A valve structure for mechanical devices similar to these, which move at an angle to each other. A series of evacuation slots (19, 119, 129) capable of opening the end walls (13, 11 3, 213), and the end wall (13, 113, 213) a working chamber, and a discharge chamber (11b, 1 11b, 211b), and a discharge elongated hole extends radially between the Valve structure controlled by valve member with pull (12b, 112b, 212b) In the valve member (12b, 112b, 212b), the end wall (13, 113, 213) is inserted into the groove (21, 121, 221) of the end wall (13, 113, 213) has the smallest opening, with the smallest opening pointing in the direction of the working chamber. orientation, the end wall (13, 113, 213) further has the largest opening; , the largest opening points toward the evacuation chamber (11b, 111b, 211b). A valve seat (121a, 221a) is arranged between these openings, and the valve member the inner surface of the working chamber is flat or nearly flat with the inner surface of the adjacent working chamber; A valve structure characterized by: 2. The valve seat (221a) is connected to the opposing opening ( the valve member (the inlet opening and the outlet opening); 12) and the associated discharge slot (119) are connected to the valve seat and the discharge slot inlet. Claim 1, characterized in that it has a conical equivalent part between the openings. The valve structure described in . 3. The valve seat (221a) preferably has a groove (221a) parallel to the plane of the inlet opening. ) is disposed at the top of an annular spherical member projecting outwardly from the bottom of the The valve member (212b) extends inward from the valve seat (221a) at the protrusion (212''). It extends toward the inlet closing part of the elongated discharge hole, and when the valve is in the closed position. At some point, the protrusion (212'') inwardly extends the associated working chamber. It protrudes to the inner surface and closes the space between the square seat and the inlet opening of the elongated discharge hole. The valve structure according to claim 2, characterized in that: 4. The valve member (12b, 112b, 212b) is a common member that exhibits elasticity. controlled by a loose spring actuated valve member (12, 112, 212); The valve structure according to any one of claims 1 to 4, characterized in that: 5. The discharge elongated hole (19, 119) is opened by its respective valve member (12b, 112b). each valve member (12b, 112b) is controlled by a common valve device (12, 112b), respectively. 112), the valve member (12, 112) being permanently coupled to the valve member (112); 12b, 112b) in the common groove (20, 2) of the end wall (13, 113). 1; 120, 121). Valve structure. 6. The valve member (12, 112) includes an annular portion (12a, 112a), and the annular portion (1 2a, 112a) has a finger-shaped valve member (12b, 112b); b, 112b) from the edge of one side of the annular part arranged in a common plane to the annular part , extending radially, any one of claims 1 to 5. The valve structure described in the above item. 7. The annular portion (112a) is arranged radially innermost and the finger valve member (112h) ) are arranged radially outermost, and the annular part (112a) is fixed in the axial direction, or The finger-shaped valve member (112b) is fixedly mounted in an almost immovable state, whereas the finger-shaped valve member (112b) is mounted in an annular shape. It is characterized by being able to be rotated individually to intersect the plane that crosses the section. The valve structure according to claim 6. 8. The valve member (12b, 112b) associated with the valve device (12, 112) is particularly thin. Claims 1 to 7, characterized in that the structure is formed by a thin wall structure. The valve structure described in section. 9. A valve member (112b) is supported in the valve open position, said support being supported by a special support device ( 100), and the support device (100) holds the valve member (112b) thereto. Shaped to correspond to the associated valve device (112), its rigidity and Claim 1, characterized in that the strength is generally greater than that of the valve device and the valve member device. The valve structure according to item 8.