Refrigerating system and purification method for the same
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Solution Overview
Problem
The transportation of large-scale refrigeration equipment faces challenges with refrigerant leakage and equipment erosion due to atmospheric moisture permeation, and existing methods for separating pressure maintaining gases from refrigerants are inefficient and costly, requiring complex operation processes and higher material costs.
Innovation Solution
A refrigerating system design incorporating a purification loop that connects to the refrigerating loop at the highest position to separate and discharge pressure maintaining gases, utilizing a low-temperature separator, pressurizing separator, or semi-permeable membrane to efficiently separate refrigerant and pressure maintaining gases, reducing material and labor costs while preventing equipment erosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure maintaining gas is charged into the refrigeration equipment before transportation, then equipment erosion is prevented, but gas separation and discharge becomes complex and costly
Solution Approach 1:
The system divides the gas separation process into two distinct functional components: a gas pump-out unit for removing pressure maintaining gas and a refrigerant charging unit for introducing refrigerant. This segmentation allows each unit to perform its specific function efficiently without requiring complex integrated systems, thereby reducing overall device complexity while maintaining erosion prevention capabilities.
Solution Approach 2:
The invention extracts the pressure maintaining gas from the refrigeration equipment before refrigerant charging. By using the gas pump-out unit to remove the pressure maintaining gas through dedicated pump-out ports, the system separates the harmful gas component from the refrigerant, simplifying the subsequent refrigerant charging process and eliminating the need for complex gas-refrigerant mixture management.
2Reliability
If pressure maintaining gas is charged into the refrigeration equipment, then transportation safety is improved, but refrigerant charging quality becomes difficult to guarantee
Solution Approach 1:
The invention extracts the pressure maintaining gas from the refrigeration equipment through dedicated pump-out ports using the gas pump-out unit before refrigerant charging. This extraction step ensures that the refrigerant charging process operates on a vacuum or clean environment rather than a gas-filled environment, thereby guaranteeing refrigerant charging quality while maintaining transportation safety through the pressure maintaining gas protection during transit.
Solution Approach 2:
The system performs preliminary gas pump-out action before refrigerant charging. By removing the pressure maintaining gas in advance through the gas pump-out unit, the system prepares the refrigeration equipment for optimal refrigerant charging conditions, ensuring high charging quality while the preliminary action of charging pressure maintaining gas beforehand ensures transportation safety.
3Reliability
If pressure maintaining gas needs to be pumped out before refrigerant charging, then equipment performance is protected, but operation process becomes complex
Solution Approach 1:
The system segments the operation process into two simple, sequential steps: first pump out pressure maintaining gas using the gas pump-out unit, then charge refrigerant using the refrigerant charging unit. Each step uses dedicated ports and units, making the operation process straightforward and easy to execute while ensuring equipment performance is protected through proper gas removal before refrigerant introduction.
4Quantity of substance
If centralized refrigerant charging in production plant is used, then material costs are reduced, but transportation process stability deteriorates
Solution Approach 1:
The invention performs preliminary action by charging pressure maintaining gas into the refrigeration equipment at the production plant before transportation. This preliminary gas charging stabilizes the internal environment during transportation, preventing atmospheric moisture permeation and equipment erosion, while still allowing centralized refrigerant charging in the production plant to reduce material costs. The pressure maintaining gas acts as a protective barrier during transit.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution ensures safe and cost-effective transportation of refrigeration equipment by preventing refrigerant leakage and equipment erosion, simplifying operation processes, and reducing material and labor costs through efficient separation and discharge of pressure maintaining gases.
Implementation Method 1
a purification loop, connected to the refrigerating loop and configured to separate a pressure maintaining gas in the refrigerating loop
Implementation Method 2
utilizing a low-temperature separator, pressurizing separator, or semi-permeable membrane to efficiently separate refrigerant and pressure maintaining gases
Implementation Method 3
utilizing a low-temperature separator, pressurizing separator, or semi-permeable membrane to efficiently separate refrigerant and pressure maintaining gases
Implementation Method 4
utilizing a low-temperature separator, pressurizing separator, or semi-permeable membrane to efficiently separate refrigerant and pressure maintaining gases
Data Source
AI summary
The present invention provides a refrigerating system, including: a refrigerating loop, including a compressor, a condenser, a throttling element, and an evaporator that are connected in sequence through a pipeline; and a purification loop, connected to the refrigerating loop and configured to separate a pressure maintaining gas in the refrigerating loop; wherein the refrigerating loop is connected into the purification loop from the top of the condenser or the top of the compressor. The present invention further provides a purification method for a refrigerating system, including: in a first time period, performing S1: charging, into the refrigerating system, a refrigerant that satisfies a designed refrigerating capacity; and S2: charging a pressure maintaining gas into the refrigerating system, so that pressure in the refrigerating system is higher than atmospheric pressure; and in a second time period, performing S3: separating and discharging the pressure maintaining gas in the refrigerating system.