KR102197455B1 - High pressure multi-stage regenerative type turbo-machinery - Google Patents

Abstract

Disclosed is a high-pressure multistage regenerative fluid machine. According to an embodiment of the present invention, the high-pressure multistage regenerative fluid machine includes: an impeller which is a disc-shaped impeller including a first side and a second side opposed to the first side, wherein a first flow path groove is formed on the circumference of the first side in a circumferential direction, a plurality of first vanes dividing the first flow path groove, a second flow path groove is formed on the circumference of the second side in a circumferential direction, and a plurality of second vanes dividing the second flow path groove are placed; and a housing first and second casings surrounding the impeller. The first casing includes a first inner side opposed to the first side of the impeller, a fluid supply part introducing fluids into the housing, and a first curved groove formed on the circumference of the first inner side to be opposed to the first flow path groove, and a first channel through which the fluids can flow is formed between the first curved groove and the first flow path groove. The second casing includes a second inner side opposed to the second side of the impeller, a fluid discharge part discharging fluids from the inside of the housing, and a second curved groove formed on the circumference of the second inner side to be opposed to the second flow path groove, and a second channel through which the fluids can flow is formed between the second curved groove and the second flow path groove. The housing includes a connection part with which one end of the first channel and one end of the second channel are connected such that fluids can be communicated. Thus, the fluids introduced through the fluid supply part are pressed while flowing through the first channel, and then, are additionally pressed while flowing through the second channel after passing by the connection part, and the additionally pressed fluids are discharged to the outside of the housing through the fluid discharge part.

Description

High pressure multi-stage regenerative fluid machine {HIGH PRESSURE MULTI-STAGE REGENERATIVE TYPE TURBO-MACHINERY}

The present invention relates to a regenerative fluid machine, and more particularly, to a high-pressure multi-stage regenerative fluid machine for transferring fluid at a high pressure.

The regenerative fluid machine is a device mainly used for conveying gas at relatively low flow rate and high pressure, such as industrial high pressure blowers (ring blowers). Recently, a blower for supplying air in a sewage treatment plant, and a vacuum conveying system in the production process It is applied to fuel pumps for automobiles, high-pressure water pumps for fire fighting, and groundwater supply pumps for farms.

Among them, in particular, a method of improving the efficiency of a fuel cell, that is, a method of applying a regenerative fluid machine to a system in which hydrogen used as fuel for the fuel cell is recycled and supplied back to the stack is being sought.

However, when using the previously developed regenerative fluid machine, there is a disadvantage of low efficiency due to friction loss due to multiple impeller layers. In addition, since it is not possible to pressurize multiple stages with a single impeller due to the structure, in order to supply high pressure hydrogen, a plurality of impellers must be connected in multiple stages or the number of rotations of the impeller must be increased.

In order to solve this problem, a method of adjusting the shape of the impeller groove and channel, which are key elements of a regenerative fluid machine, has been sought, but this also causes a problem that the size of the machine and the number of rotations of the impeller increase, and the efficiency decreases.

Accordingly, there is a need to develop a regenerative fluid machine capable of transferring fluid at high pressure while reducing the number of impellers and the number of rotations of the impeller.

An embodiment of the present invention is to provide a high-pressure multi-stage regenerative fluid machine capable of reducing product size for a compact design.

An embodiment of the present invention is to provide a high-pressure multi-stage regenerative fluid machine capable of reducing the number of rotations of an impeller.

An embodiment of the present invention is to provide a high-efficiency, high-pressure multi-stage regenerative fluid machine capable of multi-stage pressurization with only a single impeller.

According to an aspect of the present invention, as a disc-shaped impeller having a first surface and a second surface opposite to the first surface, a first flow path groove is formed in a circumferential direction around the first surface, and the first 1 Impeller in which a plurality of first vanes for partitioning the channel grooves are disposed, a second channel groove is formed in a circumferential direction around the second surface, and a plurality of second vanes for partitioning the second channel grooves are disposed And a housing including a first casing and a second casing surrounding the impeller, wherein the first casing has a first inner surface facing the first surface of the impeller, and a fluid supply unit through which fluid flows into the housing. And a first curved groove formed around the first inner surface so as to face the first flow path groove, and allowing the fluid to flow between the first curved groove and the first flow path groove. 1 channel is formed, and the second casing has a second inner surface facing the second surface of the impeller, a fluid discharge part through which the fluid is discharged from the housing, and the second inner surface facing the second flow path groove. A second channel including a second curved groove formed around a circumference of a side surface, and a second channel through which the fluid can flow is formed between the second curved groove and the second flow path groove, and the first channel in the housing And a connection part connected to one end of the second channel in fluid communication, and after the fluid introduced through the fluid supply part is pressurized while flowing through the first channel, the second channel flows through the connection part. A high-pressure multi-stage regenerative fluid machine is provided, which is additionally pressurized while the fluid is discharged to the outside of the housing through the fluid discharge unit.

At this time, the connection part is connected to one end of the first curved groove of the first casing and one end of the second curved groove of the second casing from the outside of the radial direction of the impeller so as to be provided inside the housing. Can be formed.

In this case, one end of the connection part is coupled to one end of the first channel, and the other end of the connection part is coupled to the other end of the first channel to transfer the fluid from the first channel side to the second channel side. It may be formed as a separate tubular member.

In this case, the movement of the fluid between the first channel and the second channel may be performed only through the connection part.

In this case, the fluid supply unit and the fluid discharge unit may be disposed in a direction perpendicular to a rotation direction of the impeller.

In this case, the fluid supply unit may be connected to the other end of the first channel, and the fluid discharge unit may be connected to the other end of the second channel.

According to another aspect of the present invention, the high-pressure multi-stage regenerative fluid machine comprises at least two or more, wherein the two or more high-pressure multi-stage regenerative fluid machines include a first high-pressure multi-stage regenerative fluid machine and the first high-pressure multi-stage regenerative fluid machine. A multi-high pressure multi-stage regenerative fluid machine is provided, comprising a second high-pressure multi-stage regenerative fluid machine connected to the fluid machine.

In this case, the second casing of the first high pressure multistage regenerative fluid machine and the first casing of the second high pressure multistage regenerative fluid machine may be integrally formed.

At this time, the fluid discharge unit of the first high pressure multistage regenerative fluid machine and the fluid supply unit of the second high pressure multistage regenerative fluid machine are coupled to each other, and the fluid supply unit of the second high pressure multistage regenerative fluid machine It is formed to protrude toward the fluid discharge part of the multistage regenerative fluid machine, and may be fitted and coupled to the fluid discharge part of the first high pressure multistage regenerative fluid machine.

At this time, the first high-pressure multi-stage regenerative fluid machine and the second high-pressure multi-stage regenerative fluid machine are disposed to be spaced apart from each other, and the fluid discharge portion of the first high-pressure multi-stage regenerative fluid machine and the second high-pressure multi-stage regenerative fluid machine It may be connected in fluid communication with each other by a separate tubular connection member connecting the fluid supply of the machine.

In this case, the first impeller of the first high pressure multistage regenerative fluid machine and the second impeller of the second high pressure multistage regenerative fluid machine may rotate around a single rotation axis.

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According to an embodiment of the present invention, by forming separate fluid channels on both sides of a single impeller, but connecting them in series, it is possible to provide a high-efficiency, high-pressure multi-stage regenerative fluid machine capable of pressing multiple stages with only a single impeller. .

One embodiment of the present invention is compact and economical because it is possible to reduce the number of impellers required and reduce the number of rotations of the impeller by forming a two-stage pressurization structure through the first and second channels connected in series to transfer fluid. We can provide a mechanical design.

1 is a perspective view showing a high-pressure multi-stage regenerative fluid machine according to an embodiment of the present invention.
2 is an exploded perspective view of a high-pressure multi-stage regenerative fluid machine according to an embodiment of the present invention.
3 is a cross-sectional perspective view of a high-pressure multi-stage regenerative fluid machine according to an embodiment of the present invention.
4 is an enlarged perspective view showing an enlarged connection portion of a first channel and a second channel of a high-pressure multistage regenerative fluid machine according to an embodiment of the present invention.
5 is a block diagram showing a first channel and a second channel of a high-pressure multi-stage regenerative fluid machine according to an embodiment of the present invention.
6 is a view as viewed from the outer surface of the first casing by separating the first channel, the second channel and the impeller shown in FIG. 5.
7 is a perspective view showing a multi-high pressure multi-stage regenerative fluid machine according to another embodiment of the present invention.
8 is an exploded perspective view of a multi-high pressure multi-stage regenerative fluid machine according to another embodiment of the present invention.
9 is a cross-sectional perspective view of a multi-high pressure multi-stage regenerative fluid machine according to another embodiment of the present invention.
10 is a block diagram showing each channel of a multi-high pressure multi-stage regenerative fluid machine according to another embodiment of the present invention.
11 is a view viewed from the outer side of the first casing by separating each channel and the impeller shown in FIG. 10.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement the present invention. The present invention may be implemented in various different forms, and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and the same reference numerals are assigned to the same or similar components throughout the specification.

1 is a perspective view showing a high-pressure multi-stage regenerative fluid machine according to an embodiment of the present invention. 2 is an exploded perspective view of a high-pressure multi-stage regenerative fluid machine according to an embodiment of the present invention. 3 is a cross-sectional perspective view of a high-pressure multi-stage regenerative fluid machine according to an embodiment of the present invention.

1 to 3, a high-pressure multi-stage regenerative fluid machine (1, hereinafter, regenerative fluid machine) according to an embodiment of the present invention is for transferring fluid at high pressure by rotating an impeller built in the casing. Device.

In one embodiment of the present invention, the fluid conveyed by the regenerative fluid machine 1 may be a gas or a liquid. In particular, the regenerative fluid machine 1 according to an embodiment of the present invention may be effective in transferring a fluid having a high pressure and a low flow rate at the same time. For example, hydrogen used as fuel for a fuel cell is recycled and supplied back to the stack. It can be applied to the system

Referring to FIG. 2, the regenerative fluid machine 1 according to an embodiment of the present invention may include a first casing 10, a second casing 30, and an impeller 50.

In one embodiment of the present invention, the first casing 10 is a member having a volume that can sufficiently wrap one side (first side) of the impeller 50. In the drawings, the first casing 10 is shown to have a disk shape, but the shapes of the first casing 10 and the second casing 30 to be described later are not limited thereto. A shape capable of accommodating the impeller 50 is sufficient, but for a compact design, a disk shape similar to the shape of the impeller 50 will be advantageous.

The first casing 10 is a first outer surface 12 exposed to the outside, a first inner surface 14 in contact with the impeller 50, and between the first inner surface 14 and the first outer surface 12 It may include a first thickness surface 13 present in the.

In this case, a fluid supply unit 16 for supplying fluid from the outside to the inside of the regenerative fluid machine 1 may be formed on a part of the first outer surface 12 and the first thickness surface 13. The fluid supply unit 16 may be formed to protrude a predetermined height from the first outer surface 12 as shown in FIG. 2.
In addition, the fluid supply unit 16 may be disposed in a direction perpendicular to the rotation direction of the impeller as shown in FIG. 1.

However, unlike this, it does not protrude from the first outer surface 12 and may exist in the form of an opening formed on the first outer surface 12 like the fluid discharge part 36 shown in FIG. 1.

In an embodiment of the present invention, referring to FIGS. 2 and 3, in a direction opposite to the first outer surface 12 of the first casing 10, the first inner surface 14 in direct contact with the impeller 50 Exists.

At this time, the first inner surface 14 may form a first channel 20 through which the fluid supplied from the fluid supply unit 16 can flow together with the first flow path groove 52 of the impeller 50 to be described later. have. In detail, the first channel 20, which is a space in which fluid can move and flow in a circular motion around the rotation shaft 58 of the impeller 50 between the first inner surface 14 and the first flow path groove 52. Can be formed.

At this time, the first inner surface 14 is the first inner surface 14 corresponding to the first flow path groove 52 of the impeller 50 when the first casing 10 and the impeller 50 are coupled. It may include a first curved groove 15 formed concave in a part of the.

More specifically, the first curved groove 15 is formed concave in the direction from the first inner surface 14 to the first outer surface 12 to form a space, that is, the first channel 20 so that the fluid can flow. Plays a role. Here, the first curved groove 15 may have a semicircular cross section as shown in FIG. 3. However, the cross-sectional shape of the first curved groove 15 and the second curved groove 35 to be described later is not limited thereto, and may be formed in various shapes such as an ellipse or a trapezoid.

The regenerative fluid machine 1 according to an embodiment of the present invention is coupled to the first casing 10, and a second casing 30 forming a second channel 40 similar to the first casing 10 Includes.

At this time, the second casing 30 has a second outer surface 32 exposed to the outside, like the first casing 10, a second inner surface 34 and a second inner surface 34 in contact with the impeller 50. ) And a second thickness surface 23 between the second outer surface 32.

In this regard, the structure and function of the second outer surface 32, the second inner surface 34, and the second thickness surface 23 are almost similar to those of the first casing 10, so a duplicate description thereof will be omitted, Let's focus on the differences.

In an embodiment of the present invention, referring to FIG. 2, the second casing 30 may include a fluid discharge part 36 through which fluid is discharged from the inside of the regenerative fluid machine 1 to the outside.

In more detail, the second casing 30 is a fluid channel (a first channel 20 and a second channel 40 to be described later) through which the fluid supplied to the inside of the regenerative fluid machine 1 through the fluid supply unit 16 is As an outlet that is discharged at a higher pressure than when flowing into the fluid supply unit 16 after flowing in steps, a fluid discharge unit 36 may be included.

At this time, the fluid discharge part 36 may be formed to protrude a predetermined height from the second outer surface 32 like the fluid supply unit 16, and as shown in FIG. 2, the fluid discharge part 36 is opened on the second outer surface 32 without protrusion. It can also exist in form.
In addition, the fluid discharge part 36 may be disposed in a direction perpendicular to the rotation direction of the impeller as shown in FIGS. 1 and 3.

In an embodiment of the present invention, referring again to FIGS. 2 and 3, the second casing 30 flows between the second inner surface 34 and the second flow path groove 54 of the impeller 50. As a possible space, a second channel 40 may be formed. At this time, it goes without saying that the second inner surface 34 may form a second curved groove 35 that is concave in the direction of the second outer surface 32 like the first inner surface 14. That is, the second channel 40 may be formed by the second flow path groove 54 and the second curved groove 35 of the impeller 50.

The regenerative fluid machine 1 according to an embodiment of the present invention includes an impeller 50 that rotates about a rotation shaft 58 between the first and second casings described above.

At this time, the impeller 50 may be formed in a disk shape as shown in FIGS. 2 and 3, and consists of a pair of circular side surfaces 51a and 51b and an outer peripheral surface 56 positioned at the edge of the rotation shaft 58 Can be

In one embodiment of the present invention, ring-shaped flow path grooves 52 and 54 that are concave along the circumferential direction may be formed in a region adjacent to the outer circumferential surface 56 as part of both side surfaces 51a and 51b of the impeller.

In this case, the flow path grooves 52 and 54 may include a first flow path groove 52 in contact with the first inner surface 14 and a second flow path groove 54 in contact with the second inner surface 34.

Meanwhile, the first flow path grooves 52 and the second flow path grooves 54 present on both sides of the impeller 50 may be symmetrical to each other based on a cross section perpendicular to the rotation axis 58 of the impeller 50. This is because the fluid flowing through the first channel 20 again flows through the second channel 40, so it is safe to form the same flow path grooves on both sides, considering that there is no change in the flow rate between each channel. This is to promote convenience in the production of (50).

On the other hand, the first flow path groove 52 and the second flow path groove 54 exist separately from each other and are not connected to each other. That is, in one embodiment of the present invention, there is no through hole penetrating the both side surfaces 51a and 51b of the impeller 50. This is when the first flow path groove 52 and the second flow path groove 54 are connected to each other, a flow between the first channel 20 and the second channel 40 occurs, and consequently, the first channel 20 and This is because it is impossible to connect the second channel 40 in series.

In addition, the impeller 50 is provided with a plurality of vanes in the first and second flow path grooves 54. In more detail, the vane is a blade-shaped plate member that divides each of the flow path grooves 52 and 54 into a plurality of regions, and serves to flow the fluid in one direction by applying pressure to the fluid according to the rotation of the impeller 50 can do.

In this case, the shape of the vane may be formed in a semicircular shape so as to correspond to the shape of the concave passage grooves 52 and 54 as shown in FIG. 4. However, the shape of the vane is not limited thereto, and may be variously formed according to a desired design flow.

On the other hand, the first and second flow path grooves 54 are each of the first and second channels 40 together with the first and second inner surfaces 34, specifically first and second curved grooves 15 and 35 The formation of is as described above.

Hereinafter, a connection structure of the first and second channels 40 by the regenerative fluid machine 1 according to an embodiment of the present invention and a flow of fluid related thereto will be described with different drawings.

4 is an enlarged perspective view illustrating a connection portion between a first channel and a second channel of a high-pressure multistage regenerative fluid machine according to an embodiment of the present invention. 5 is a block diagram showing a first channel and a second channel of a high-pressure multi-stage regenerative fluid machine according to an embodiment of the present invention. 6 is a view as viewed from the outer surface of the first casing by separating the first channel, the second channel and the impeller shown in FIG. 5. However, it should be noted that the first and second channels shown here are virtual fluid movement paths, and are shown to facilitate explanation.

In an embodiment of the present invention, referring to FIGS. 4 to 6, the first channel 20 and the second channel 40 are connected in series with each other. Here, that the channels are connected in series with each other may mean a state in which they are sequentially connected to each other or a state in which they are continuously connected to each other. In other words, it may mean that the fluid finishes flow in one channel, moves to the next channel, and starts flow again.

In more detail, referring to FIG. 5, the fluid enters the first channel 20 through the fluid supply unit 16 of the first casing 10. At this time, starting from the start portion 22 of the first channel adjacent to the fluid supply unit 16, the first flow path groove 52 and the first inner surface 14 are passed through the first flow path groove 52 and the first inner surface 14 according to the rotation of the impeller 50. The flow through the first channel 20 ends while moving to the end portion 24 of the channel.

After that, the fluid that has finished flowing in the first channel 20 is not discharged to the outside, and the second channel is rotated from the start portion 42 of the second channel 40 as the same impeller 50 rotates. It moves to the end portion 44 of the second channel through the flow path groove 54 and the second inner surface 34, and finally discharges it to the outside of the regenerative fluid machine 1 through the fluid discharge portion 36. do.

Through the above-described process, the regenerative fluid machine 1 according to an embodiment of the present invention can increase the pressure of the fluid step by step by dividing it into two stages only by rotating a single impeller 50.

As a result, even if a plurality of impellers are not provided, a fluid having a high pressure can be transferred through a two-step pressurization process. As a result, it is possible to design the regenerative fluid machine 1 with a more compact structure. In addition, since the fluid can be pressurized at a higher pressure without increasing the number of rotations of the impeller 50, it is effective in terms of energy efficiency.

In an embodiment of the present invention, the first channel 20 and the second channel 40 may be directly connected to each other, or may be connected by a separate connecting member (not shown).

First, as an example of directly connecting the first channel 20 and the second channel 40 to each other in series, the first and second casings so that the first curved groove 15 and the second curved groove 35 are connected to each other. You can design the inner side of (30).

Specifically, referring to FIG. 4, two channels are limited to the connection portions 24 and 42 in which the end portion 24 of the first channel 20 and the start portion 42 of the second channel 40 are connected to each other. The first and second flow path grooves 54 of the impeller 50 and the first and second curved grooves 35 of the casings 10 and 30 are partially overlapped and may be designed so as to be in fluid communication with each other. .
To this end, specifically, referring to FIG. 4 again, inside the housings 10 and 30, one end of the first curved groove 15 of the first casing and one end of the second curved groove 35 of the second casing A connection portion formed by being connected to each other outside the radial direction of the additional impeller 50 may be formed. That is, as shown in FIG. 4, the first and second curved grooves 35 may be designed to be located in an outer area than the outer peripheral surface 56 of the impeller 50. This is to form a space in the outer region of the outer peripheral surface 56 through which the fluid can move to the second channel 40.
At this time, after the fluid flowing into the first casing 10 through the fluid supply unit 16 is pressurized while flowing through the first channel 20, it is additionally pressurized while flowing through the second channel 20 through the connection. Then, the additionally pressurized fluid may be finally discharged to the outside of the housings 10 and 30 through the fluid discharge part 36 of the second casing 30.

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However, referring again to FIG. 3, the first and second curved grooves 35 in the remaining regions excluding the above-described connection portions 24 and 42 correspond to the shapes of the first and second flow path grooves 54, respectively. Therefore, it goes without saying that the first curved groove 15 and the second curved groove 35 cannot be connected to each other in areas other than the connecting portion.

In this way, when the first curved groove 15 and the second curved groove 35 are directly connected, there is an advantage that the first channel 20 and the second channel 40 can be connected in series only by the design of the casing.

In one embodiment of the present invention, as another example for connecting the first channel 20 and the second channel 40 so that the fluid is pressed sequentially through the first channel 20 and the second channel 40, It may be connected indirectly by introducing a separate connecting member (not shown). For example, the connecting member may be a tubular member that has both ends connected to the end portion 24 of the first channel and the start portion 42 of the second channel to transfer fluid.

Hereinafter, with different drawings, a multi-high pressure multi-stage regenerative fluid machine 100 (hereinafter, a multi regenerative fluid machine) according to another embodiment of the present invention will be described.

7 is a perspective view showing a multi-high pressure multi-stage regenerative fluid machine according to another embodiment of the present invention. 8 is an exploded perspective view of a multi-high pressure multi-stage regenerative fluid machine according to another embodiment of the present invention. 9 is a cross-sectional perspective view of a multi-high pressure multi-stage regenerative fluid machine according to another embodiment of the present invention.

The multi regenerative fluid machine 100 according to another embodiment of the present invention is formed by connecting at least two regenerative fluid machines 1 according to an embodiment of the present invention. The multi regenerative fluid machine 100 can secure a greater number of channels by connecting a plurality of regenerative fluid machines 1. This makes it possible to transport a fluid with a higher pressure.

Duplicate description of the structure and function of the individual regenerative fluid machine (1) constituting the multi regenerative fluid machine (100) will be omitted, and a differentiated configuration will be emphasized compared to the single regenerative fluid machine (1). .

The multi regenerative fluid machine 100 is formed by connecting individual regenerative fluid machines 1 in series. As described above, that being connected in series may mean a state in which each channel is sequentially connected to each other or a state in which the channels are connected in a straight line.

As a method of connecting individual regenerative fluid machines (1), there are a direct connection method and an indirect connection method.

First, the direct connection method is a method of directly connecting the fluid discharge part 36 of one regenerative fluid machine and the fluid supply part of the other regenerative fluid machine without a separate member.

In another embodiment of the present invention, as an example of directly connecting the individual regenerative fluid machines 1, at least one second casing 30 of the plurality of regenerative fluid machines 1 and at least one other first There is a method of integrally forming the casing 10.

In more detail, referring to FIGS. 8 and 9, a hub casing 30 positioned in the middle of the multi-regenerative fluid machine 100 may be introduced.

In detail, the hub casing 30 may be formed to contact the impellers 50 and 90 on both sides without distinction between the outer and inner surfaces, unlike the conventional casing. That is, by introducing the hub casing 30 integrally formed by combining one second casing and the other first casing, a plurality of fluid channels can be formed on both sides with only one casing.

At this time, on one side of the hub casing 30, the first impeller 50 and the first casing 10 are located in the same way as the existing regenerative fluid machine, and the second impeller 50 and the third casing 70 are located on the other side. Can be located. Also, each of the impellers 50 and 90 may be formed to share the rotation shaft 58 so as to be rotatable by a single motor.

In the case of the hub casing 30 as described above, it is not necessary to have a separate coupling structure, and it is possible to prevent leakage of unnecessary fluid that may occur between the coupling structures.

Next, as another example of directly connecting the individual regenerative fluid machines 1, there is a method of coupling and connecting a fluid discharge part in an opening form and a fluid supply part in a protruding form formed to correspond thereto.

In this case, as a method of coupling, a method of force fitting between the fluid supply unit and the fluid discharge unit or a method of coupling by adding a bearing may be used. However, the coupling method between the multi-regenerative fluid machine 100 according to another embodiment of the present invention is not limited thereto.

In another embodiment of the present invention, a separate connection member (not shown) may be introduced to indirectly connect the individual regenerative fluid machine 1.

At this time, as an example of the connecting member, a tubular member that is connected to one fluid discharge unit 36 and the other fluid supply unit 16 among a plurality of regenerative fluid machines to transfer fluid may be applied.

A description will be given of pressurizing and transporting the fluid through the multi regenerative fluid machine 100 having the above structure.

10 is a block diagram showing each channel of a multi-high pressure multi-stage regenerative fluid machine according to another embodiment of the present invention. 11 is a view viewed from the outer side of the first casing by separating each channel and the impeller shown in FIG. 10. However, it should be noted that each channel shown here is a virtual fluid movement path, and is shown for ease of explanation.

Referring to FIG. 10, the fluid flows from the start 24 of the first channel 20 to the end 24 and the second channel 40 through the start 42 of the second channel 40 connected thereto. The flow and transfer process to the end portion 44 of the is the same as already described above.

However, the multi-regenerative fluid machine 100 does not end the pressurization process at the end portion 44 of the second channel 40, and transfers the fluid to the third channel 60 included in the other individual regenerative fluid machine 1. Transfer to the beginning of ).

Thereafter, the multi-regenerative fluid machine 100 may repeat the pressurization process again through the third channel 60 and the fourth channel 80 to transfer a fluid having a higher pressure. Finally, the fluid is pressurized through a flow path through which the four channels 20, 40, 60, and 80 are connected in series.

However, either one of the third channel 60 or the fourth channel 80 may not be used for fluid transfer, depending on the fluid pressure required by design. For example, only the third channel 60 is connected to the second channel 40, and the fourth channel 80 connected to the third channel 60 is not separately formed, or in a closed state so that fluid does not communicate. In this case, it is possible to finally pressurize the fluid in three stages through the three channels 20, 40, and 60.

In addition, when a higher pressure is required, it is of course possible to create a flow path in which N or more channels are connected in series whenever N individual regenerative fluid machines 1 are added. Therefore, the multi-regenerative fluid machine 100 according to another embodiment of the present invention has the advantage of being able to pressurize a fluid to a higher level with only N impellers. As a result, the number of impellers required for design or the number of rotations of the impeller can be reduced.

Although an embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiment presented in the present specification, and those skilled in the art who understand the spirit of the present invention can add components within the scope of the same idea. It will be possible to easily propose other embodiments by changing, deleting, adding, etc., but it will be said that this is also within the scope of the present invention.

1 High pressure multistage regenerative fluid machine 10 No. 1 casing
12 1st outer side 14 1st inner side
15 1st curved groove 16 Fluid supply part
20 First channel 22, the beginning of channel 42
24, 44 channel end 30 second casing
32 2nd outer side 34 2nd inner side
35 2nd curved groove 36 Fluid outlet
40 second channel 50 impeller
52 No. 1 Eurohome 53 Bain
54 2nd flow groove 56 Outer circumference of impeller
58 Rotary shaft 60 3rd channel
70 3rd casing 80 4th channel
90 Second Impeller 100 Multi High Pressure Multistage Regenerative Fluid Machine

Claims (12)

A disk-shaped impeller having a first surface and a second surface opposite to the first surface, wherein a first flow path groove is formed in a circumferential direction around the first surface, and a plurality of An impeller in which a first vane is disposed, a second channel groove is formed in a circumferential direction around the second surface, and a plurality of second vanes partitioning the second channel groove are disposed;
Including a housing including a first casing and a second casing surrounding the impeller,
The first casing includes a first inner surface facing the first surface of the impeller, a fluid supply unit through which fluid flows into the housing, and a first inner surface formed around the first inner surface to face the first flow path groove. A first channel including a curved groove and through which the fluid can flow is formed between the first curved groove and the first flow path groove,
The second casing is formed around a second inner surface facing the second surface of the impeller, a fluid discharge part through which the fluid is discharged from the inside of the housing, and the second inner surface facing the second flow path groove. A second channel including a second curved groove and through which the fluid can flow is formed between the second curved groove and the second flow channel,
The housing is provided with a connection part connected to one end of the first channel and one end of the second channel in fluid communication, and after the fluid introduced through the fluid supply part is pressurized while flowing through the first channel, the connection part A high-pressure multi-stage regenerative fluid machine that is additionally pressurized while flowing through the second channel, and the additionally pressurized fluid is discharged to the outside of the housing through the fluid discharge unit. The method of claim 1,
The connection part is formed by connecting one end of the first curved groove of the first casing and one end of the second curved groove of the second casing from the outside of the radial direction of the impeller so as to be provided inside the housing High pressure multi-stage regenerative fluid machine. The method of claim 1,
One end of the connection part is coupled to one end of the first channel, and the other end of the connection part is coupled to the other end of the first channel to transfer the fluid from the first channel side to the second channel side. High pressure multi-stage regenerative fluid machine formed of tubular members. The method of claim 1,
A high-pressure multistage regenerative fluid machine, wherein the fluid movement between the first channel and the second channel occurs only through the connection portion. The method of claim 4,
The fluid supply unit and the fluid discharge unit are arranged in a direction perpendicular to a rotation direction of the impeller. The method of claim 1,
The fluid supply unit is connected to the other end of the first channel, and the fluid discharge unit is connected to the other end of the second channel. delete Including at least two or more high-pressure multi-stage regenerative fluid machines according to any one of claims 1 to 6,
The two or more high pressure multistage regenerative fluid machines include a first high pressure multistage regenerative fluid machine and a second high pressure multistage regenerative fluid machine connected to the first high pressure multistage regenerative fluid machine. machine. The method of claim 8,
The second casing of the first high-pressure multi-stage regenerative fluid machine and the first casing of the second high-pressure multi-stage regenerative fluid machine are integrally formed. The method of claim 8,
The fluid discharge unit of the first high pressure multistage regenerative fluid machine and the fluid supply unit of the second high pressure multistage regenerative fluid machine are coupled to each other,
The fluid supply unit of the second high-pressure multi-stage regenerative fluid machine is formed to protrude toward the fluid outlet of the first high-pressure multi-stage regenerative fluid machine, and is fitted to the fluid outlet portion of the first high-pressure multi-stage regenerative fluid machine. , Multi high pressure multi-stage regenerative fluid machine. The method of claim 8,
The first high-pressure multi-stage regenerative fluid machine and the second high-pressure multi-stage regenerative fluid machine are disposed to be spaced apart from each other, and the fluid discharge portion of the first high-pressure multi-stage regenerative fluid machine and the second high-pressure multi-stage regenerative fluid machine A multi-high pressure multi-stage regenerative fluid machine connected in fluid communication with each other by separate tubular connecting members connecting the fluid supply unit. The method of claim 8,
A first impeller of the first high-pressure multi-stage regenerative fluid machine and a second impeller of the second high-pressure multi-stage regenerative fluid machine rotate around a single rotation axis.

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