Water-saving anti-freezing apparatus for solar heater pipe
A technology for solar water heaters and antifreeze devices, which is applied to solar thermal devices, solar thermal power generation, heating devices, etc., can solve the problem of difficult emptying of residual water, and achieve significant water saving effects, prolong service life, and prevent freezing blockage.
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[0014] Such as figure 1 , figure 2 and image 3 As shown, this solar water heater pipeline water-saving antifreeze device includes a water tank, an upper and lower water pipe 1 and an air injection pipe 2. Put the ∩-shaped elbow 3 into the water tank, and the top of the ∩-shaped elbow communicates with the lower end of the gas injection check valve 9; one end of the ∩-shaped elbow extends into the bottom of the water tank, and the other end communicates with the upper end of the upper and lower water pipes 1; The lower end of the water pipe leads out of the water tank and communicates with the four-way 4, and the other ports of the four-way communicate with the lower ends of the water inlet valve 5, the water outlet valve 6 and the air extraction check valve 8 respectively; the upper end of the air extraction check valve communicates with the air pump 7 ; One end of the gas injection pipe 2 communicates with the upper end of the gas injection check valve 9, and the other en...
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