KR100959419B1 - Method and system for designing impeller of centrifugal and mixed flow pump - Google Patents

Abstract

The present invention relates to a method and system for designing an impeller for centrifugal and four-flow pumps, and more particularly, to provide a three-dimensional shape for an impeller used for centrifugal and four-flow pumps, a meridional surface representing a basic shape of an impeller. View) and front view information showing wing angles, and information on wing developments showing wing angles according to meridional coordinates, providing easy design of impellers, and providing more stable and efficient centrifugal and quadrilateral pumps. It is to be done.

In particular, by setting the design parameters of the impeller, inputting the set variable value to generate the meridion shape data of the impeller, and provides the impeller wing angle information based on the generated meridion shape data, for the impeller of the centrifugal and four-flow pump As a numerical representation of the shape, it is possible to facilitate the design of the impeller for centrifugal and quadruple pumps, as well as to improve the reliability and competitiveness of the product for the centrifugal and quadruple pumps manufactured using the same. .

Centrifugal and vortex pumps, impellers, meandering surfaces, design variables

Description

Method and system for designing impeller of centrifugal and mixed flow pump

The present invention by the numerical representation of the shape of the impeller, it is possible to more easily design the impeller for centrifugal and four-flow pump, as well as centrifugal and to improve the reliability and competitiveness of the product for the centrifugal and four-flow pump A method and system for designing an impeller for a four-flow pump.

Centrifugal and reciprocating pumps refer to a fluid machine that pumps a fluid, that is, transports a fluid or generates pressure by using centrifugal and circulating forces generated by an impeller rotating by power from the outside.

In order to derive the shape of the impeller, which is the main part of the centrifugal and vortex pump,

As shown in FIG. 1, wing view information indicating a meridional view representing a shape of a wing and a wing angle according to a front view or a meridion coordinate representing a wing angle is required.

Among these, the meridion surface represents the entrance and exit diameter of the blade, the hub and the shroud shape, and is the most basic design variable in the impeller design. However, the existing Miao surface design has been made by defining the inlet / outlet diameter of the wing and the shape of the hub and shroud depending on the empirical aspect, and smoothly connecting the inlet and outlet using arc curves. Because design variables that could be controlled were not established, it was difficult to design because the shape could not be represented numerically.

The present invention solves the problem that the design of the impeller was difficult because the variable to control the meridion surface was not established in the related art, and thus the impeller shape could not be expressed numerically, thereby numerically expressing the meandering surface of the impeller. This is to facilitate the creation of a three-dimensional shape.

As a means for solving the above problems, the design method of the impeller for the centrifugal and four-flow pump according to the embodiment of the present invention, the meridion surface which receives the meridion surface design variable set for meridion surface shape control and calculates meridion surface shape data of the impeller. Shape design process; A wingspan design process for calculating wing angles by inputting wingspan shape data of the impeller calculated in the mesothelial shape design process and set wing spread design variables for wing spread control; And an impeller shape generation process of generating and outputting a three-dimensional shape of the impeller by combining the calculated meridian surface data and the wing angle information.

In addition, according to another embodiment of the present invention, the design system of the impeller for the centrifugal and four-flow pump, the input unit for inputting the command for the impeller design and the meridion surface design variable and the blade development pattern design variable of the impeller; After receiving the meridion surface design variable and the wingspan design variable of the impeller through the input unit, the meridion shape data is calculated using the meridion surface design variable, and the wing angle is calculated using the meridion surface shape data and the blade development plan design variable. A controller configured to generate a three-dimensional shape of an impeller through the meridional shape data and the wing angle; A storage unit for storing meridian surface data, wing angle information, and three-dimensional shape data of the impeller calculated by the controller; And an output unit for outputting a meridion surface design variable and a wing pattern design variable input screen of the impeller, a calculated meridion shape data of the impeller, and a three-dimensional shape of the wing angle and the impeller under control of the controller.

The control unit may include a meridion design parameter input module configured to receive a meridion design variable of the impeller set for meridion shape control of the impeller; A meridion shape data calculation module configured to calculate meridion shape data of an impeller using the input meridion design parameter; A wingspan design variable input module for receiving the meridian shape data and wingspan design variables for wing spread control; A wing angle calculation module for constructing a wing spread view using the meridional surface shape data and wing spread design variables and calculating wing angles therefrom; And an impeller shape generation module for generating the three-dimensional shape of the impeller by combining the calculated meridian surface data and the wing angle.

In addition, in the impeller design method and system for the centrifugal and four-flow pump, the meandering surface design variable of the impeller, the inner diameter R _1h of the hub portion at the inlet of the impeller, the inner diameter R _1t of the shroud portion at the inlet of the impeller, impeller Inclination angle φ ₁ of the front end of the blade, diameter R ₂ of the impeller outlet, blade width B ₂ at the impeller trailing edge, angle of inclination φ ₂ of the blade rear end, axial length of the shroud inlet and outlet Z _tip , the inlet angle θ _{1t where} the shroud curve of the impeller forms the horizontal and vertical lines and the outlet angle θ _2t , the inlet angle θ _1h the hub curve of the impeller forms the horizontal and vertical lines, the outlet angle θ _2h , and the impeller outlet hub Shroud inlet adjustment to create a Bezier curve from the point where the length of the straight part in the shroud,% L _h ,% L _t , and the outlet segment ends at the impeller inlet Point and outlet adjustment points% CP _1t ,% CP _2t and hub inlet adjustment points and outlet adjustment points% CP _1h and% CP _2h .

In addition, in the impeller design method and system for the centrifugal and four-flow pump, the impeller wing design parameters, the total length of the meridion curve M_total_ (h, m, t), the exit start point TE start point, the sweep angle and the average of the impeller The product of the set radius r_theta_total, the entry angle beta1_ (h, m, t), the exit angle beta2_ (h, m, t), the length of the entry straight part% beta_LE_ (h, m, t), the length of the exit straight part% beta_TE_ (h , m, t), each d_theta (m, h) inclined in the rotational direction at the outlet, the control point% CP_LE_ (h, m, t) at the inlet, and the control point% CP_TE_ (h, m, t) or the total length of the curve when it is meridion, M_total_ (h, m, t), entrance angle beta1_ (h, m, t), exit angle beta2_ (h, m, t), length of entry straight line% beta_LE_ (h, m, t), length% beta_TE_ (h, m, t) of the outlet straight portion, and each of the d_theta (m, h) inclined in the rotational direction at the outlet may be included.

According to the present invention, it is possible to establish a meridion plane and a wing development view design variable representing the three-dimensional shape of the impeller, and to control the respective design variables, thereby numerically representing the shape of the impeller. Databases can be made, and the design of the impeller can be made easier, as well as it can be used to improve the reliability and competitiveness of the product for centrifugal and quadruple pumps.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing in detail the operating principle of the preferred embodiment of the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In addition, the same reference numerals are used for parts having similar functions and functions throughout the drawings.

In addition, when a part of the specification is said to be 'connected' to another part, it includes not only 'directly connected' but also 'indirectly connected' with another element in between. do. In addition, the term 'comprising' a certain component means that the component may be further included, without excluding the other component unless specifically stated otherwise.

In addition, the term 'module' refers to a unit for processing a specific function or operation, which may be implemented in hardware or software or a combination of hardware and software.

The present invention sets basic design parameters for the design of the impeller, and when the design variables are inputted, automatically calculates the meridian shape information of the impeller, and uses the calculated meridian shape information to calculate the wing angle θ of the impeller. The present invention provides a method and system for representing a three-dimensional shape of an impeller by calculating a value.

2 is a flowchart illustrating a method of designing an impeller according to the present invention.

Referring to FIG. 2, the design method of the impeller according to the present invention includes a meandering surface design process S10, a wing plan view design process S20, and an impeller three-dimensional shape generation process S30.

That is, the mesosurface shape information, which is the impeller basic shape information, is obtained through the mesosurface design process (S10), and then the impeller wing angle θ value is obtained through the wing development plan design process (S20). Then, in step S30, the meridian shape information and the impeller wing angle θ are combined to generate a three-dimensional shape of the impeller.

Hereinafter, the meridian surface design process S10 and the wing exploded view design process S20 will be described in detail with reference to FIGS. 3 to 8.

As described above, the meridion shape represents the entrance and exit diameter of the wing and the shape of the hub and shroud, which is the most basic design variable in the design of the impeller.

In the present invention, first, in step S11, the meridion design parameter for controlling the meridion shape is input. In the present invention, the meridional design variable for meridional shape control is defined as shown in FIG. 3.

Referring to FIG. 3, the meridional design parameter is an internal diameter R _1h of the hub portion at the inlet of the impeller, an inner diameter R _1t of the shroud portion at the inlet of the impeller, and an inclination of the impeller wing front in order to set the basic frame of the meridional surface. Φ ₁ , the diameter R ₂ of the impeller outlet, the blade width B ₂ at the impeller trailing edge, the inclination angle φ ₂ at the trailing edge, and the axial length Z _tip of the shroud inlet and outlet. Include.

The variables R _1h and R _1t indicate the area and the wing shape of the impeller inlet, and provide basic coordinate information, and the variable φ ₁ represents R _{1h and} R _1t. With regard to identify each the area distribution of the blade front end inclined relative to the impeller central axis (Z-axis) is related to the area of the inlet portion, R ₂ is the impeller shape by R ₂ variables as a variable representing the full size impeller You can determine the size of B ₂ , The area of the exit portion is determined by φ ₂ . The area thus determined later influences the outlet pressure and speed. And Z _{_ tip} is a variable for determining shape size of the impeller in the axial direction by representing the impeller axial dimension.

The above-described parameters are used to determine the basic coordinate values of the meridians, and in addition, additional variables are needed to connect the hub part and the shroud part from the inlet part to the outlet part. For this purpose, the design variables are the inlet angle θ _1t and the outlet angle θ _{2t where} the shroud curve of the impeller forms the horizontal and vertical lines, the inlet angle θ _1h and the outlet angle θ _2h , which the hub curve of the impeller forms the horizontal and vertical lines. the outlet length% L _h of the linear portion of the hub and the shroud,% L _t, shroud inlet adjustment for Bezier at a point outlet portion straight portion ends to the impeller entrance section generates a curve point and the outlet control points % CP _1t ,% CP _2t , and hub inlet and outlet adjustment points% CP _1h and% CP _2h are further included.

Briefly describing the above variable, there is a straight length section at the outlet of the impeller meridion surface according to the specific velocity, and the variables of% L _h and% L _t represent the straight length section at the outlet. The curves connected at the inlet and outlet of the impeller Miao surface form a curved line at the inlet and outlet at a constant angle with respect to the horizontal line and vertical line, where θ _1h , θ _2h , θ _1t , and θ _2t are hubs and shrouds. Each side represents the angle of inlet and outlet.

In addition, in order to connect in a smooth curve form from the end point of the straight section of the outlet of the impeller, conventionally, a method of combining Arc was used. In the present invention, a Bezier curve is used, and the Bezier curve is used. In addition, the curve is represented by defining the curve using the vertices of the polygon that includes the curve to be generated. The% CP _1t ,% CP _2t ,% CP _1h and% CP _2h are variables for adjustment points for generating Bezier curves.

In the step S11 of the present invention, the basic design variable and the additional design variable of the meridian surface of the impeller described above may be input through an input window as shown in FIG. 4A.

Then, in step S12, the meridion shape data of the impeller is calculated using the input design variables. The calculation of the meridion shape data may include calculating a basic coordinate value of the meridion plane based on a basic design variable, and then calculating a straight section included in the hub and shroud through additional design variables, and then connecting the input section and the output section. Is calculated in order.

In operation S13, the calculated meridion shape data of the impeller is stored or output to the screen, which may be output through an output window as shown in FIG. 4B. At this time, the meridian surface data of the impeller is represented by coordinate values in the axial direction (z axis) and the radial direction (r axis). The calculated meridian shape data may be stored in various formats, for example, a CAD format and a wing pattern input format, as necessary.

Next, the wing development plan design process S20 for calculating the wing angle of the wing development using the meridian shape data of the impeller calculated as described above will be described in detail.

Wing development of the impeller can be represented by using the meridian surface and the front surface, referring to Figure 5, as shown in (a), the meridian surface showing the wing shape of the impeller, the axial direction and the radial direction (z, r) of the impeller As shown in (b), the front face representing the blade angle of the impeller is represented by the radius and the direction of rotation (r, h), and as shown in (c), the meridians and the front face of the impeller The wing development developed on the vertical line easily represents the inlet angle, the outlet angle, and the blade length of the impeller blade.

Therefore, the blade angle value of the impeller can be calculated using the blade development.

Referring back to FIG. 2, in the wing development plan design process S20, first, the meridion shape data of the impeller calculated in the meridion plane design process S10 is received in step S21. 7A and 8A show an example of a meridion shape data input screen for designing a wing pattern according to a Bezier curve control method and a classic curve control method, and include coordinate values (z, r) in the axial direction and the radial direction. When the image is cut, the shape data is imported.

Next, in step S22, the values of the remaining wing development design variables are received.

In the present invention, the impeller wing design parameters are defined as Bezier curve control method and classical curve control method according to the curve control method. Here, the Bezier curve control method has the advantage that the wing length can be controlled because the sweep angle of the wing is included as a variable.

FIG. 6A is a view showing a wing exploded view design variable according to a Bezier curve control method. Referring to FIG. 6A, the impeller wing exploded view design variable is a total length M_total_ (h, m, t), of the meridion curve of the meridion shape data. Exit start point TE start point, product of sweep angle of impeller and averaged radius r_theta_total, entrance angle beta1_ (h, m, t), exit angle beta2_ (h, m, t), length of entry straight line% beta_LE_ (h, m, t), the length of the exit straight part% beta_TE_ (h, m, t), the angle d_theta (m, h) inclined in the rotational direction at the exit part, the adjustment point% CP_LE_ (h, m, t) of the inlet part, And the adjustment point% CP_TE_ (h, m, t) of the outlet portion. In this case, the parameter h is the impeller hub, m is the impeller mid, t is characterized in that the impeller shroud.

The total length of the meridians curve M_total_ (h, m, t) is the Y-axis value of the wing development, and the Y-axis varies depending on the curve of the meridians. The variable value comes from the meridion shape data calculated in the meridion design process (S10).

Normally, since the wing development shows the wing angle distribution at the exit or inlet as needed, the reference point of the wing development is required to show the wing development. Therefore, the exit start point TE start point is used as a reference point of the wing development.

Next, r_theta_total is the X-axis value of the blade development degree. Therefore, the X axis of the wing development depends on the sweep angle of the impeller.

Inlet angle beta1_ (h, m, t) related to incidence angle affects the impeller operating flow rate, and outlet angle beta2_ (h, m, t) has a great influence on the head and efficiency which represent the impeller performance.

In addition, the variables of% beta_LE_ (h, m, t) and% beta_TE_ (h, m, t) do not exist in the impeller design when the inlet and outlet angles are smoothly connected. This is necessary because the angles of the inlet / outlet parts may need to be the same.

The variable of d_theta (m, h) changes the impeller shape according to the design of the specific speed. Especially in the four-flow pump, the speed distribution varies according to the shape of the impeller (outlet variable) when the impeller and the diffuser are combined. Because it affects performance, it is necessary to control the speed distribution.

The variables of% CP_, LE_ (h, m, t) and% CP_TE_ (h, m, t) are sweeps of the impeller when the expansion of the wing development is developed by smoothly connecting the inlet / outlet angles of the impeller. Since the angle is determined by the inlet / outlet angle, not the fixed variable, the inlet / outlet angle may not be smoothly connected when the impeller sweep angle is given as a design variable as described above. Shown to adjust Bezier curves to smoothly connect exit angles.

FIG. 7B illustrates an embodiment of a wing development view design variable input screen according to a Bezier curve control method, and is provided to display the defined variable together with the shape of the wing development view and input the defined variables. In FIG. 7B, wing development design variables according to the Bezier curve control method defined above are input, and the starting point calculation is performed by the parameters.

Next, design variables in the classical curve control scheme will be described, in which the defined design parameters are shown in FIG. 6B. The classical curve control method defines the impeller wing length as a curve that smoothly connects the inlet / outlet angles, so the wing length and sweep angle are determined by the impeller inlet / outlet angles.

Thus, in the classical curve control scheme, the wing spread design variables are the variable r_theta_total related to the sweep angle, the TE start point of the exit point, and the adjustment points of the inlet and outlet points for the Bezier curve% CP_LE_ (h, m, t),% CP_TE_ (h, m, t) is not necessary.

Therefore, in the case of the classical curve control method, in step S22, as shown in FIG. 8B, the entrance angle beta1_ (h, m, t), the exit angle beta2_ (h, m, t), and the length% of the inlet straight portion are shown. Enter only beta_LE_ (h, m, t), the length% beta_TE_ (h, m, t) of the exit straight section, and each d_theta (m, h) inclined in the rotational direction from the exit section.

As described above, when the wing spread design variable is input, a straight section and a curved section of the wing spread view are calculated using the input parameters in step S23, and a wing angle (theta value) according to the coordinates is calculated. In step S24, the wing angle calculated as in FIGS. 7C and 7B is output.

As described above, the meridion shape information and the wing angle information, which are variables necessary for expressing the three-dimensional shape of the impeller, may be automatically calculated, and in step S30, the three-dimensional shape of the impeller may be combined.

Next, Figure 9 is a block diagram showing the configuration of the design system of the impeller for centrifugal and quadrilateral pump according to the present invention for generating the impeller three-dimensional shape by the above-described method.

Referring to FIG. 9, the impeller design system of the present invention includes an input unit 91 for inputting an instruction for an impeller design, a meridion surface design variable of the impeller, and a value of a wing exploded view design variable, and through the input unit 91. Meridian surface design variables and wing development chart design variables are inputted, meridian surface shape data of an impeller is calculated using the meridian surface design variables, and wing angles are calculated using the meridian surface shape data and the wing development plan design variables, and then the meridian surface shape data. And a control unit 92 for combining a wing angle to generate a three-dimensional shape of the impeller, and a storage unit 93 for storing the meridian surface data, wing angle information, and three-dimensional shape data of the impeller calculated by the control unit 92. And the meridion surface design variable and the blade development pattern design variable of the impeller under the control of the controller 92, and the calculated meridion surface shape of the impeller. And an output unit 94 for outputting data, wing angles, and three-dimensional shapes.

In the above, the input unit 91 represents commonly used input means, for example, a keyboard, a mouse, and the like, and the output unit 94 represents a display device, which is another device capable of performing the same function. The input and output devices are generally known and thus will not be described in detail.

The control unit 92, which is the most important component in the system according to the present invention, is more specifically, a meridian design variable input module 921, a meridian shape data calculation module 922, and a wing development diagram design variable input module ( 923, a wing angle calculation module 924, and an impeller-shaped module 925.

The Meridian design variable input module 921 is for receiving input of the Meridian design variable of the impeller described above, and provides an input window through which the user can input the design variables when the Meridian is shown in FIG. 4A through the output unit 94. Get the value of each variable.

The meridion shape data calculation module 922 has a meridion design variable received from the meridion design variable input module 921 and the meridion shape data of the impeller, that is, coordinate values for the hub curve and the shroud curve of the meridion. , r) is calculated and stored in the storage unit 93. In addition, a result window as shown in FIG. 4B is output to inform the calculation result to the user.

The vane design variable input module 923 imports the meridian surface data of the impeller necessary to calculate the vane angle from the storage unit 94, and then provides an input window as shown in FIGS. Wing pattern of impeller wing is inputted.

The wing angle calculation module 924 calculates a wing angle of each point when it is turned on using the variables inputted from the wing design view input module 923, and outputs a result window as shown in FIGS. 7C and 8C. 94) to inform the user of the result of the calculation.

The impeller shape generation module 925 generates a three-dimensional shape of the impeller using the meridion shape data and the wing angles calculated by the meridion shape data calculation module 922 and the wing angle calculation module 924 and outputs the same. Output through the unit 94.

The operation of each module described above is based on the impeller shape design method, which will be more readily understood from the description with reference to FIGS. 2 to 8.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be apparent to those skilled in the art.

By using the impeller design method and system according to the present invention, the design of the impeller becomes easy, and the numerical representation of the shape of the impeller facilitates the construction of a database for each model, and the design of stable and efficient centrifugal and cross-flow pulp. Becomes possible.

1 is a view for explaining the process of deriving the three-dimensional shape of the impeller,

2 is a flow chart showing an impeller design method according to the present invention,

3 is a view showing the meridional design parameters defined by the present invention,

4a to 4b is an exemplary view showing a meridian surface design process according to the present invention,

5 is a view showing a wing development of the impeller,

6A and 6B are diagrams showing wing exploded view design parameters defined in accordance with the present invention;

7A to 7C are exemplary views illustrating a process of designing a wing pattern according to a Bezier curve control method according to the present invention.

8A to 8C are exemplary views illustrating a process of designing a wing pattern according to a classical curve control method according to the present invention.

Figure 9 is a block diagram showing a design system of the impeller according to the present invention.

Claims (9)

A meridion shape design process of receiving a meridion design variable of the impeller set for meridion shape control of the impeller and calculating meridion shape data of the impeller; A wingspan design process for calculating wing angles by inputting wingspan design data of the set impeller for controlling the wingspan shape data calculated in the mesothelial shape design process and the wingspan of the impeller; And The method of designing an impeller for centrifugal and circumferential pump, comprising an impeller shape generation process of generating and outputting a three-dimensional shape of an impeller by combining the calculated meridian surface data and wing angle information. The method of claim 1, wherein the Meridian design variable is Inner diameter R _1h of the hub part at the inlet of the impeller, Inner diameter of the shroud at the inlet of the impeller R _1t , Inclination angle φ ₁ of the impeller blade shear, Diameter R ₂ of the impeller outlet; Wing width B ₂ at impeller trailing edge Inclination angle φ _{2 at the} rear end of the wing, Axial length Z _tip of shroud inlet and outlet The inlet angle θ _1t and the outlet angle θ _2t , which the shroud curve of the impeller forms with the horizontal and vertical lines, The inlet angle θ _1h and the outlet angle θ _2h , The lengths of the straight parts in the impeller outlet hub and shroud% L _h ,% L _t , and Shroud inlet and outlet adjustment points% CP _1t ,% CP _2t , and hub inlet and outlet adjustment points% to create a Bezier curve from the end of the straight section of the outlet to the impeller inlet. Including CP _1h and% CP _2h , The hub represents an inner curve of the meridians corresponding to the outer length of the impeller, The shroud design method of the impeller for centrifugal and four-fluid pump, characterized in that the outer curve of the meridians corresponding to the outer length of the impeller. The method of claim 1, wherein the blade development design variable, The total length of the curve M_total_ (h, m, t), TE start point of the outlet starting point corresponding to the upper portion of the impeller, The product of the impeller sweep angle and the averaged radius r_theta_total, Inlet angle beta1b_ (h, m, t), which is a part corresponding to the lower part of the impeller, Outlet angle beta2b_ (h, m, t), which is a part corresponding to the upper part of the impeller, Length% beta_LE_ (h, m, t) of the inlet linear part for maintaining the inlet angle in a linear state among the inlet parts corresponding to the lower part of the impeller, Length% beta_TE_ (h, m, t) of the straight line of the outlet to maintain the outlet angle in a linear state of the outlet corresponding to the upper part of the impeller, Each d_theta (m, h) inclined in a rotational direction at an outlet corresponding to an upper portion of the impeller, An adjustment point% CP_LE_ (h, m, t) of the inlet portion, which is an extension line portion of the inlet straight portion corresponding to the lower part of the impeller, and And a control point% CP_TE_ (h, m, t) of the outlet portion, which is an extension line portion of the outlet straight portion corresponding to the upper portion of the impeller. The method of claim 1, wherein the blade development design variable, The total length of the curve M_total_ (h, m, t), Inlet angle beta1_ (h, m, t), which is an angle of the inlet part corresponding to the lower part of the impeller, An exit angle beta2_ (h, m, t), which is an angle of an exit portion corresponding to an upper portion of the impeller, Length of inlet straight portion% beta_LE_ (h, m, t), which is a straight portion that maintains the inlet angle in a linear state among the inlets corresponding to the lower part of the impeller, Length% beta_TE_ (h, m, t) of the exit straight part which is a straight part which maintains an exit angle in a linear state among the exit parts corresponding to the upper part of the impeller, and Design method of the impeller for centrifugal and four-flow pump, characterized in that it comprises each d_theta (m, h) inclined in the rotational direction at the outlet portion which is a portion corresponding to the upper portion of the impeller. An input unit for inputting a command for an impeller design, a meandering surface design variable, and a wingspan design variable in an impeller wing generation program (ANSYS bladeGEN); The meridion surface design variable and the wingspan design variable are inputted through the input unit, the meridion shape data is calculated using the meridion surface design variable, and the wing angle is calculated using the meridion shape data and the wing development plan design variable. A controller for generating a three-dimensional shape of the impeller through the shape data and the wing angle; A storage unit for storing meridian surface data, wing angle information, and three-dimensional shape data of the impeller calculated by the controller; And Design system of the impeller for centrifugal and four-flow pump including the output variable for outputting the design variable, the blade development view input screen, and the calculated result under the control of the controller. The method of claim 5, wherein the control unit, A Zao-Yang design variable input module for receiving the Zhao-O design parameters set for the control of the shape A meridian shape data calculation module configured to calculate meridian shape data using the input meridian design variable; A wingspan design variable input module configured to receive the meridian shape data and wingspan design variables for wing spread control; A wing angle calculation module for constructing a wing spread view using the meridional surface shape data and wing spread design variables and calculating wing angles therefrom; And Impeller design system for a centrifugal and four-fluid pump comprising an impeller shape generation module for generating a three-dimensional shape of the impeller by combining the calculated meridian surface data and the wing angle. The method of claim 5, wherein the Meridian design variable is Inner diameter R _1h of the hub part at the inlet of the impeller, Inner diameter of the shroud at the inlet of the impeller R _1t , Inclination angle φ ₁ of the impeller blade shear, Diameter R ₂ of the impeller outlet; Wing width B ₂ at impeller trailing edge Inclination angle φ _{2 at the} rear end of the wing, Axial length Z _tip of shroud inlet and outlet The inlet angle θ _1t and the outlet angle θ _2t , which the shroud curve of the impeller forms with the horizontal and vertical lines, The inlet angle θ _1h and the outlet angle θ _2h , The lengths of the straight parts in the impeller outlet hub and shroud% L _h ,% L _t , and Shroud inlet and outlet adjustment points% CP _1t ,% CP _2t , and hub inlet and outlet adjustment points% to create a Bezier curve from the end of the straight section of the outlet to the impeller inlet. Including CP _1h and% CP _2h , The hub represents an inner curve of the meridians corresponding to the outer length of the impeller, The shroud design system of the impeller for centrifugal and four-fluid pump, characterized in that the outer curve of the meridians corresponding to the outer length of the impeller. The method of claim 5, wherein the blade development design variable, The total length of the curve M_total_ (h, m, t), TE start point of the outlet starting point corresponding to the upper portion of the impeller, The product of the impeller sweep angle and the averaged radius r_theta_total, Inlet angle beta1b_ (h, m, t), which is a part corresponding to the lower part of the impeller, Outlet angle beta2b_ (h, m, t), which is a part corresponding to the upper part of the impeller, Length% beta_LE_ (h, m, t) of the inlet linear part for maintaining the inlet angle in a linear state among the inlet parts corresponding to the lower part of the impeller, Length% beta_TE_ (h, m, t) of the straight line of the outlet to maintain the outlet angle in a linear state of the outlet corresponding to the upper part of the impeller, Each d_theta (m, h) inclined in a rotational direction at an outlet corresponding to an upper portion of the impeller, An adjustment point% CP_LE_ (h, m, t) of the inlet portion, which is an extension line portion of the inlet straight portion corresponding to the lower part of the impeller, and And a control point% CP_TE_ (h, m, t) of the outlet portion, which is an extension line portion of the outlet straight portion corresponding to the upper portion of the impeller. The method of claim 5, wherein the blade development design variable, The total length of the curve M_total_ (h, m, t), Inlet angle beta1_ (h, m, t), which is an angle of the inlet part corresponding to the lower part of the impeller, An exit angle beta2_ (h, m, t), which is an angle of an exit portion corresponding to an upper portion of the impeller, Length of inlet straight portion% beta_LE_ (h, m, t), which is a straight portion that maintains the inlet angle in a linear state among the inlets corresponding to the lower part of the impeller, Length% beta_TE_ (h, m, t) of the exit straight part which is a straight part which maintains an exit angle in a linear state among the exit parts corresponding to the upper part of the impeller, and Design system of the impeller for centrifugal and four-flow pump, characterized in that it comprises each d_theta (m, h) inclined in the rotational direction at the outlet portion which is a portion corresponding to the upper portion of the impeller.

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