Nonbearing water heater

Abstract

The utility model discloses a non-pressure-bearing outlet-open water-storage water heater which comprises a water tank 1, a cold water inlet pipe 2, a hot water outlet pipe 2, an electric heating pipe 4, a small-capacity chamber 21 at the highest water level, and a water nozzle 18, and is characterized in that (1) in the water tank 1, the upper end of the hot water outlet pipe 3 directly extends into the small-capacity chamber 21 at the highest water level; the lower end of the hot water outlet pipe is connected with a hot water outlet 18-5 of the water nozzle 18, and communicated with a shower head port 18-7; the hot water outlet pipe 3 is always communicated with an atmosphere by the shower head port 18-7 no matter a handle 18-3 of the water nozzle 18 is opened or closed; and hot water can be mixed with cold water in the water nozzle 18 to adjust the water temperature. The water heater has the advantages that in the water tank, the water directly meets with the atmosphere, and the working pressure is 0, so that weld cracks and water leakage caused by thermal expansion and cold contraction can be avoided, and water tank explosion due to the fact that the electric heating pipe works for a long time and is full of steam due to a circuit fault can be avoided.

Description

technical field [0001] The invention relates to a non-pressurized, open-outlet storage water heater. Background technique [0002] In the Chinese standard GB4706.12-2006 <Special requirements for safe storage water heaters for household and similar electrical appliances>, Figure 101d shows a typical structure of a storage water heater with an open outlet, and the water flow is only controlled by a valve in the water inlet pipe , the hot water outlet channel does not pass through the valve, and the outlet water temperature cannot be adjusted by the same valve. This kind of non-pressurized, open-outlet storage water heater was produced decades ago, but it is not suitable for current use. There is no such product in the market. Sale. [0003] The storage water heaters currently on the market are 100% pressure-bearing water heaters welded with metal materials. There are still four worldwide problems in this product that cannot be overcome; ;②After the temperature-limitin...

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Problems solved by technology

[0002] In the Chinese standard GB4706.12-2006 , Figure 101d shows a typical structure of a storage water heater with an open outlet, and the water flow is only controlled by a valve in the water inlet pipe , the hot water outlet channel does not pass through the valve, and the outlet water temperature cannot be adjusted by the same valve. This kind of non-pressurized, open-outlet storage water heater was produced decades ago, but it is not suitable for current use. There is no such product in the market. Sales

[0003] The

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