Refrigeration system and method based on multi-capillary flow control

By using a multi-capillary flow control system, the capillary length is dynamically adjusted to match the speed of the variable frequency compressor, which solves the problems of poor matching, high noise, and imprecise energy consumption in variable frequency compressor refrigeration systems, and achieves efficient, quiet, and precise refrigeration effects.

CN122305634APending Publication Date: 2026-06-30AUCMA
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
AUCMA
Filing Date
2026-04-10
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In existing variable frequency compressor refrigeration systems, the capillary tube's flow capacity cannot simultaneously meet the refrigerant flow requirements at high and low speeds, resulting in poor system matching, low energy efficiency, high noise, and imprecise energy consumption, especially when the variable frequency compressor stops and the refrigerant flow generates noise.

Method used

The system employs a multi-capillary flow control system, which uses a throttling switching component consisting of a two-position three-way solenoid valve and a three-way pipe to dynamically adjust the capillary length to match the speed of the variable frequency compressor. This achieves precise matching between high speed and large flow rate and low speed and small flow rate, reducing refrigerant flow noise and optimizing energy efficiency.

Benefits of technology

It enables the variable frequency compressor to operate efficiently across the entire speed range, reduces system energy consumption, improves noise reduction and temperature control accuracy, and ensures stable operation of the refrigeration system under different operating conditions.

โœฆ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122305634A_ABST
    Figure CN122305634A_ABST
Patent Text Reader

Abstract

This invention provides a refrigeration system and method based on multi-capillary flow control, specifically relating to the field of refrigeration equipment technology. The refrigeration system includes a variable frequency compressor, a condenser, a main capillary tube, an evaporator, and at least one set of throttling switching components. The throttling switching components include an auxiliary capillary tube, a two-position three-way solenoid valve, and a three-way pipe. The discharge port of the variable frequency compressor is connected to the inlet of the condenser. The liquid outlet of the condenser is connected to the inlet of the two-position three-way solenoid valve via the main capillary tube. One outlet of the two-position three-way solenoid valve is connected to one inlet of the three-way pipe. The other outlet of the two-position three-way solenoid valve is connected to the liquid inlet of the auxiliary capillary tube, and the outlet of the auxiliary capillary tube is connected to the other inlet of the three-way pipe. The outlet of the three-way pipe is connected to the inlet of the evaporator. The return port of the evaporator is connected to the suction port of the variable frequency compressor via a return pipe. This invention enables dynamic tracking of the total refrigerant throttling length and the speed of the variable frequency compressor, ensuring that the refrigeration system always operates under optimal conditions.
Need to check novelty before this filing date? Find Prior Art