Cold water backflow heating device of instant electric water heater

Abstract

The invention discloses a cold water backflow heating device of an instant electric water heater. The device comprises a first pipe body and a movable pipe body, wherein the first pipe body is connected to the movable pipe body in a sleeving manner; one end of the movable pipe body is provided with a movable port and the other end of the movable pipe body is provided with a telescopic hose; the other end of the telescopic hose is provided with a fixed pipe body; one end of the first pipe body is provided with an opening, and the other end of the first pipe body is provided with a first outer ring; the first outer ring is arranged on a water outlet pipe body; and the outer side of the first outer ring is provided with a low-pressure pipe body. According to the invention, the heating deviceof the electric water heater is improved, so that water in the water outlet pipe of the water heater enters a heating pipeline in a state that the valve is closed; and the water heated inside the water heater is used for heat preservation, and hot water is directly discharged after air is discharged when the water heater is opened, so that water resources are effectively saved, cold water is not generated, and the electric water heater is convenient for bathing.

Description

technical field [0001] The invention relates to the technical field of electric water heaters, in particular to a cold water reflux heating device for instant electric water heaters. Background technique [0002] Electric water heaters and gas water heaters are widely used in family life as the most common water heaters in today's society. Electric water heaters include preheating water heaters and instant water heaters. For gas water heaters with limited energy, the traditional electric water heater makes the water stored in the water tank reach the bathing temperature by preheating, which makes the water heater do not need to be heated during use, which is safe and secure. However, this storage type electric water heater takes up There is a lot of space, and the number of bathers is limited by the size of the water tank of the electric water heater. An oversized water tank can allow many people to bathe but takes up a lot of space. The electric current quickly heats the w...

AI Technical Summary

Problems solved by technology

[0002] Electric water heaters and gas water heaters are widely used in family life as the most common water heaters in today's society. Electric water heaters include preheating water heaters and instant water heaters. For gas water heaters with limited energy, the traditional electric water heater makes the water stored in the water tank reach the bathing temperature by preheating, which makes the water heater do not need to be heated during use, which is safe and secure. However, this storage type electric water heater takes up There is a lot of space, and the number of bathers is limited by the size of the water tank of the electric water heater. An oversized water tank can allow many people to bathe but takes up a lot of space. The electric current quickly heats the water flowing through the pipe and transmits it to the outlet of the water pipe. This method saves a lot of time and space, and the number of bathers is not limited by the size of the water heater. The valve cannot be closed during the process. The water in the section of the outlet pipe of the water heater that closes the valve loses temperature quickly through the pipe. When the valve is opened again, the cold water in the water pipe must always be drained, which causes serious damage to water resources. waste

Images