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 lack adaptability 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 a sliding valve core that uses two independent output pipes from the compressor, ensuring stable pressure and adaptability to different system configurations by communicating the fourth and fifth valve ports with the compressor's vent port, along with an auxiliary heat exchanger for energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the valve chamber serves as part of the refrigerant switching channel, then the structure is simplified, but the pressure in the valve chamber becomes unstable during switching
Solution Approach 1:
The patent divides the valve system into two independent parts: the valve chamber (for pressure stability) and the refrigerant switching channel. By separating the high-pressure refrigerant flow path from the valve chamber, the pressure stability issue is resolved while maintaining structural efficiency.
Solution Approach 2:
The patent extracts the valve chamber from the refrigerant switching channel function. The valve chamber is isolated from the high-pressure refrigerant flow, allowing it to maintain stable pressure for accurate valve core positioning, while the refrigerant switching occurs through separate dedicated channels.
2Device complexity
If only one connecting pipe is matched with the vent port of the compressor, then the reversing valve structure is simple, but the system cannot adapt to configurations with multiple outdoor heat exchangers
Solution Approach 1:
The patent designs the reversing valve with multiple connecting pipes (first, second, third, fourth, and fifth connecting pipes) that can be selectively connected to different system components. This multi-functional design allows the same reversing valve to adapt to various system configurations, including those with one or multiple outdoor heat exchangers, by simply changing the connection arrangement rather than modifying the valve structure itself.
Data Source
Figure 1
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Figure 4a~5b
AI summary
The present invention discloses a reversing value (1000) which includes a pilot valve (1200) and a main valve (1100). The main valve (1100) includes: a valve body (10) with a valve chamber (20), wherein the valve chamber (20) is provided with a valve seat (30) therein, and the valve seat (30) is provided with a plurality of valve ports (40) thereon; a plurality of flow path ports (50) are correspondingly communicated with the plurality of valve ports (40); a sliding valve core (60) matching the valve seat (30). The plurality of valve ports (40) include a first valve port (41), a second valve port (42), a third valve port (43), a fourth valve port (44), and a fifth valve port (45). The plurality of flow path ports (50) include an S port (S), an E port (E), a C port (C), a D1 port (D1), and a D2 port (D2). When the sliding valve core (60) slides to a first preset position, the D1 port (D1) is communicated with the E port (E), and the S port (S) is communicated with the C port (C). When the sliding valve core (60) slides to a second preset position, the D2 port (D2) is communicated with the C port (C), and the S port (S) is communicated with the E port (E). The present invention also discloses a cooling system with the reversing valve (1000). The reversing valve (1000) 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.