Reversing valve and cooling system having same
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Solution Overview
Problem
The existing reversing valves in refrigerating systems face instability in pressure within the valve chamber during switching processes and are not adaptable to various refrigerating system configurations, such as those with multiple outdoor heat exchangers.
Innovation Solution
A reversing valve design featuring a main valve with multiple valve ports and flow path ports, a sliding valve core with independent channels, and a spring pressing flake for stable pressure management, along with two independent output pipes from the compressor to maintain pressure stability and adaptability to different system configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the valve chamber serves as part of the refrigerant switching channel, then the reversing valve can switch between cooling and heating states, but the pressure in the valve chamber becomes unstable during switching
Solution Approach 1:
The invention divides the refrigerant flow path by introducing a separate high-pressure medium introduction channel that is independent from the valve chamber. This segmentation allows the valve chamber to maintain stable pressure while the high-pressure refrigerant flows through a dedicated channel, resolving the contradiction between reversing functionality and pressure stability.
Solution Approach 2:
The invention introduces an intermediary component - the separate high-pressure medium introduction channel - that mediates between the compressor outlet and the valve chamber. This intermediary channel allows high-pressure refrigerant to be introduced without directly affecting the valve chamber pressure, thus maintaining stability while enabling the reversing function.
2Device complexity
If a single connecting pipe is used for the compressor vent port, then the reversing valve structure is simple, but it cannot adapt to systems with multiple outdoor heat exchangers
Solution Approach 1:
The invention makes the reversing valve universal by providing multiple flow path ports (first, second, third, fourth, and fifth flow path ports) that can be selectively connected to different system components. This multi-functionality allows the same valve structure to adapt to various system configurations, including systems with multiple outdoor heat exchangers, without increasing structural complexity.
Solution Approach 2:
The invention introduces dynamic adaptability through a selectable connection mechanism where different flow path ports can be actively connected or disconnected based on system requirements. This allows the reversing valve to dynamically adapt to different refrigerating system configurations, transforming from a fixed-configuration valve to a versatile, reconfigurable component.
3Device complexity
If the sliding valve core abuts against the valve seat through elastic flake, then the reversing mechanism is simple, but the unstable pressure causes reversing instability
Solution Approach 1:
The invention segments the pressure management function by introducing a separate high-pressure medium introduction channel that is isolated from the valve chamber. This segmentation ensures that the unstable high-pressure refrigerant flow does not directly affect the valve chamber pressure, thereby maintaining the simplicity of the elastic flake mechanism while improving reversing stability.
Solution Approach 2:
The separate high-pressure medium introduction channel acts as an intermediary that prevents direct interaction between the unstable high-pressure refrigerant and the valve chamber. This intermediary protects the simple elastic flake reversing mechanism from pressure fluctuations, maintaining both structural simplicity and operational reliability.
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
The solution ensures stable pressure within the valve chamber, enhances the reliability of the refrigerating system's reversing process, and allows the valve to adapt to various system configurations, including those with multiple outdoor heat exchangers, while also enabling energy savings through auxiliary heat exchanger usage.
Implementation Method 1
a spring pressing flake pressing the sliding valve core against the valve seat
Data Source
AI summary
The present invention discloses a reversing value which includes a pilot valve and a main valve. The main valve includes: a valve body with a valve chamber, wherein the valve chamber is provided with a valve seat therein, and the valve seat is provided with a plurality of valve ports thereon; a plurality of flow path ports are correspondingly communicated with the plurality of valve ports; a sliding valve core matching the valve seat. When the sliding valve core (60) slides to a second preset position, the D2 port is communicated with the C port, and the S port is communicated with the E port. The present invention also discloses a cooling system with the reversing valve. The reversing valve can effectively solve the problem in the prior art that the pressure of high pressure fluid in a valve chamber of a reversing valve is unstable in the switching process.