Freeze proof type vacuum tube sun water heater of water conservation blowdown

The utility model provides a freeze proof type vacuum tube sun water heater of water conservation blowdown, on the basis of inserting the original system of formula compact vacuum tube sun water heater member to one side, the applied physics principle to its water tank advance, the outlet pipe, overflow, blow -off pipe, the blow off pipe and give, drainage system optimal design and adjustment overall arrangement, under the prerequisite that is not consuming the supplementary energy and adding the power consumption device, realized the water conservation function of " the valve is opened, hot water come ", carry out the self -cleaning blowdown of corresponding in indoor manual control to holding water box " dead water region ", and will cool, the hot -water line evacuation, holding water box water total capacity is automatic to be reduced discharging below the safety level to prevent the emergence of freeze injury accident. A series of " cross -centennial difficult problems " that vacuum tube water heater thes