Stop-throttle valve and application thereof
A throttle valve and reversing valve technology, applied in cut-off throttle valves and its application fields, can solve problems such as high cost, poor flexibility of use, unstable product performance and quality, reduce manufacturing materials and processes, and achieve good energy-saving effects , The effect of reducing manufacturing costs
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Embodiment 1
[0073] 1. The structure diagram of the first cut-off throttle valve applied in this embodiment is as follows: Figure 5 As shown, the reversing valve adopts an electromagnetic direct-acting four-way reversing valve such as figure 2 As shown, a reversing valve port 26 of the four-way reversing valve is blocked to form a three-way reversing valve 19 such as figure 1 Shown; external balance thermostatic expansion valve 5 as Figure 4 As shown, a two-way throttling type externally balanced thermal expansion valve is adopted; the reversing valve port of the reversing valve of the three-way reversing valve 19 is connected with the external balance port 28 of the externally balanced thermal expansion valve 5;
[0074] This embodiment applies the first implementation of the cut-off throttle valve, which is applied to the Chinese Patent Publication No. CN200955880Y. The publication date is October 3, 2007. In the device, the indoor heat exchanger 15 of the prior art is expanded into...
Embodiment 2
[0093] 1. The structure diagram of the third implementation of the cut-off throttle valve used in this embodiment is as follows: Figure 9 As shown, the reversing valve adopts electromagnetic direct-acting four-way reversing valve 1 such as figure 2 As shown, the external balance thermal expansion valves 5 and 6 adopt two-way throttling external balance thermal expansion valves; the output of the four-way reversing valve 1 is normally connected to the reversing port 27 and the external balance port 28 of the external balance thermal expansion valve 5; The input normally open reversing port 26 is connected with the external balance port 28 of the external balance thermal expansion valve 6 .
[0094] The cut-off throttle valve of this embodiment is applied in Chinese Patent Publication No. CN2771763Y, the publication date is April 12, 2006, and the name is "Multipurpose Refrigeration and Heating Air Conditioning Device", replacing the two-way solenoid valve and capillary string...
Embodiment 3
[0111] 1. The structure diagram of the third implementation of the cut-off throttle valve using a one-way throttling externally balanced thermal expansion valve is as follows Figure 11 As shown, the electromagnetic direct-acting four-way reversing valve 1 is adopted; the external balance thermal expansion valve 5 adopts a one-way throttling external balance thermal expansion valve connected with the bypass valve check valve 9; the external balance thermal expansion valve 6 adopts a parallel One-way throttling external balance thermodynamic expansion valve connected to bypass valve one-way valve 25; output normally open reversing port 27 of four-way reversing valve 1 is connected with external balance port 6 of external balance thermal expansion valve; input normally open The reversing port 26 is connected with the external balance port of the external balance thermal expansion valve 5 .
[0112] This embodiment applies the first cut-off throttle valve, which is applied to the...
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