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KR-20260065254-A - method for predicting one-dimensional performance of scroll compressor based on numerical code

KR20260065254AKR 20260065254 AKR20260065254 AKR 20260065254AKR-20260065254-A

Abstract

The present invention relates to a method for predicting the one-dimensional performance of a scroll compressor based on a numeric code, and more specifically, to a method for predicting the one-dimensional performance of a scroll compressor based on a numeric code for calculating and providing the optimal scroll shape and performance based on basic information regarding the shape information of the scroll, operating conditions, and working fluid. In addition, it is characterized by including a first input step for receiving shape information of a scroll, a second input step for receiving operating conditions of a scroll, a third input step for receiving physical properties of an operating fluid, a first calculation step for calculating the volume of each chamber of a scroll based on the shape information received through the first input step, a second calculation step for calculating the flow properties for each chamber, and a display step for displaying the result calculated through the second calculation step.

Inventors

  • 양종인
  • 김경록

Assignees

  • 국립금오공과대학교 산학협력단

Dates

Publication Date
20260508
Application Date
20241101

Claims (7)

  1. A first input step for receiving shape information of a scroll; A second input step for receiving the operating conditions of the scroll; A third input step for receiving physical properties of the working fluid; A first calculation step for calculating the volume of each chamber of the scroll based on shape information input through the first input step; A second calculation step for calculating the fluidity value for each chamber; Characterized by including a display step that displays the result calculated through the above second calculation step. One-dimensional performance prediction method for scroll compressors based on numeric codes.
  2. In Article 1, The above first input step is Basic circle radius (a), involute angle ( ), scroll height( ), number of chambers( ), flow coefficient( , ), radial gap( ), lateral gap( ), scroll thickness( Characterized by receiving ) as input One-dimensional performance prediction method for scroll compressors based on numeric codes.
  3. In Article 1, The above second input step is Operating speed (ω), initial chamber pressure ( ), initial chamber temperature( ), pressure upstream of the valve at the inlet of the scroll compressor chamber ( ), temperature upstream of the scroll compressor chamber inlet valve ( ), pressure at the rear of the valve at the exit of the scroll compressor chamber ( ), temperature at the downstream end of the valve at the exit of the scroll compressor chamber ( Characterized by receiving ) as input One-dimensional performance prediction method for scroll compressors based on numeric codes.
  4. In Article 1, The above first operation step is Based on the input shape information, the radius of rotation and the end involute angle are calculated, and based on this, the scroll shell radius is calculated, and Characterized by calculating the volume per chamber based on input shape information and operating speed and the calculated scroll shell radius. One-dimensional performance prediction method for scroll compressors based on numeric codes.
  5. In Paragraph 2, The above first operation step is Based on the input shape information, the radius of rotation ( Calculate ) and the longitudinal involute angle ( After calculating ) based on the calculated result, the scroll shell radius ( It produces ), Calculated scroll shell radius ( Characterized by calculating the volume per chamber based on ). One-dimensional performance prediction method for scroll compressors based on numeric codes. Equation (1) (2) (3)
  6. In Article 1, The above second operation step is After calculating the flow rate, lateral leakage flow rate, and radial leakage flow rate for each chamber, the heat transfer amount is calculated based on this, and Characterized by calculating each fluid work and isentropic efficiency based on volume, pressure, temperature, and flow rate values over time for each chamber. One-dimensional performance prediction method for scroll compressors based on numeric codes.
  7. In Article 1, The above display step is Based on the input shape information, the shapes of the rotating scroll and the fixed scroll; While displaying the relative positions of the rotating scroll and fixed scroll that operate according to the input operating conditions, Information on volume, temperature, pressure, and flow rate per chamber over time; Characterized by displaying information on fluid work and isentropic efficiency over time One-dimensional performance prediction method for scroll compressors based on numeric codes.

Description

Method for predicting one-dimensional performance of scroll compressor based on numerical code The present invention relates to a method for predicting the one-dimensional performance of a scroll compressor based on a numeric code, and more specifically, to a method for predicting the one-dimensional performance of a scroll compressor based on a numeric code for calculating and providing the optimal scroll shape and performance based on basic information regarding the shape information of the scroll, operating conditions, and working fluid. Generally, compressors can be divided into piston compressors and scroll compressors. Among them, the scroll compressor has a structure in which multiple scrolls having involute curves are interlocked, and a compression chamber consisting of a suction chamber, an intermediate pressure chamber, and a discharge chamber is formed between the two scrolls. Scroll compressors are widely used for refrigerant compression in air conditioning systems and other applications due to their advantages, such as the ability to achieve a relatively high compression ratio compared to other types of compressors and stable torque through a smooth succession of the refrigerant suction, compression, and discharge strokes. Although the performance of such scroll compressors is determined by the geometric structure of the scroll, there were limitations in the designer deriving an optimized geometric structure by considering various conditions during the compressor design process and in predicting its performance. Recently, technologies such as Korean Patent Publication No. 10-2023-0148669, "Machine Learning-based Gas Turbine Compressor Performance Analysis Method and System and Compressor Cleaning Device Using the Same," have been developed as methods for analyzing the performance of gas turbine compressors; however, there have been difficulties in predicting the performance of scroll compressors. FIG. 1 is a flowchart illustrating, in sequence, a one-dimensional performance prediction method for a scroll compressor based on a numeric code according to the present invention. FIG. 2 is a diagram illustrating the involute angle input through the input step of the one-dimensional performance prediction method for a scroll compressor based on a numeric code according to the present invention. FIG. 3 is a diagram illustrating the positions of shape information input through the input step of a one-dimensional performance prediction method for a scroll compressor based on a numeric code according to the present invention. FIG. 4 is a drawing showing each chamber of a scroll whose shape is determined through a one-dimensional performance prediction method for a scroll compressor based on a numeric code according to the present invention. FIG. 5 is a diagram illustrating information displayed through the display step of a one-dimensional performance prediction method for a scroll compressor based on a numeric code according to the present invention. Specific structural or functional descriptions of embodiments according to the concept of the present invention disclosed herein are provided merely for the purpose of explaining embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may be implemented in various forms and are not limited to the embodiments described herein. Embodiments according to the concept of the present invention may be subject to various modifications and may take various forms; therefore, embodiments are illustrated in the drawings and described in detail in this specification. However, this is not intended to limit the embodiments according to the concept of the present invention to specific disclosed forms, and includes all modifications, equivalents, or substitutions that fall within the spirit and scope of the present invention. Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings. FIG. 1 is a flowchart illustrating a one-dimensional performance prediction method for a scroll compressor based on a numeric code according to the present invention in sequence; FIG. 2 is a diagram illustrating an involute angle input through the input step of a one-dimensional performance prediction method for a scroll compressor based on a numeric code according to the present invention; FIG. 3 is a diagram illustrating each position of shape information input through the input step of a one-dimensional performance prediction method for a scroll compressor based on a numeric code according to the present invention; FIG. 4 is a diagram illustrating each chamber of a scroll whose shape is determined through a one-dimensional performance prediction method for a scroll compressor based on a numeric code according to the present invention; and FIG. 5 is a diagram illustrating information displayed through the display step of a one-dimensional performance prediction me