water heater

Abstract

The invention provides a water heater. The water heater comprises a filter unit, a dirt collecting pipe and a flow path control device, wherein the filter unit is provided with a filter element, a water inlet hole, a clear water outlet hole and a sewage outlet hole; the dirt collecting pipe is configured for receiving water from a blow-off pipe and the dirt collecting pipe; and the flow path control device is configured for opening or closing a water route between the inlet of the blow-off pipe and the outlet of the dirt collecting pipe and a water route between the sewage outlet and the outlet of the dirt collecting pipe at the same time in a controlled way. The water heater provided by the invention has the advantages that the water route between the inlet of the blow-off pipe and the outlet of the dirt collecting pipe and the water route between the sewage outlet and the outlet of the dirt collecting pipe are opened at the same time when a filter screen and / or the dirt in a water tank need to be cleaned, and the filter element in the filter unit does not need to be disassembled, so that cleaning is simple and convenient, the problems of manual disassembly and cleaning of the filter element and pollution discharge difficulty are solved, cleaning period of the water heater is shortened, maintenance cost is saved, and water quality and usability of the water heater are improved.

Description

technical field [0001] The invention relates to the technical field of water heating, in particular to a water heater. Background technique [0002] At present, in order to ensure the water quality in the water heater, especially the water quality in the heat pump water heater, it is necessary to install a filter device at the cold water inlet of the water heater, and to remove the dirt in the water tank in time. Generally, when the water heater is blowing down or cleaning the filter screen, a professional needs to come to disassemble or open the filter or the sewage outlet for cleaning, and some water heaters are installed in a location where the cleaning and maintenance will not change, resulting in difficult maintenance. Therefore, the cleaning and maintenance cycle of most users' water heaters is very long. , thereby reducing the water quality used by users. Contents of the invention [0003] The purpose of the present invention is to overcome at least one defect of t...

AI Technical Summary

Problems solved by technology

Generally, when the water heater is blowing down or cleaning the filter screen, a professional needs to come to disassemble or open the filter or the sewage outlet for cleaning, and some water heaters are installed in the same location, which makes the cleaning and maintenance unchanged, resulting in difficult maintenance. Therefore, the cleaning and maintenance cycle of most users' water heaters is very long. , thereby reducing the user's water quality

Images