Rotary knob type water heater

Abstract

The invention provides a rotary knob type water heater, which comprises a container and a shell covering outside the container. A water inlet pipe and a water outlet pipe are connected with the container; heating bodies are arranged in the container; a rotary knob is arranged on the shell; the knob and a first microswitch arranged in the shell are at contact and separation states; a differential pressure switch is connected onto a water inlet pipeline; a water inlet and a water outlet are formed in the differential pressure switch and connected to the water inlet pipeline; an ejector pin on the top part of the differential pressure switch is connected with one end of a metal support plate; at least two contacts are arranged on the other end of the metal support plate; each contact corresponds to a switch; each contact and the corresponding switch are at contact and separation states; one switch is serially connected with the first microswitch; the switches are arranged on the top part of the differential pressure switch; and the switches, the heating bodies and a power supply are serially connected to form a power supply circuit. The water heater provided by the invention is simple in structure, can meet the demands of users on water temperature in different seasons, and is energy-saving.

Description

Technical field [0001] The invention relates to the field of water heaters, in particular to a knob type water heater. Background technique [0002] At present, water heaters commonly used in households include storage-type electric water heaters, solar water heaters and gas water heaters. These products have mature technology and are comfortable and safe to use. However, there are the following problems during use: [0003] Solar water heaters and gas water heaters are used. Since the water heater is far from the water outlet at the end, there is a long connecting pipeline in the middle. Before each continuous use, the water temperature in the connecting pipeline often cannot meet the requirements of users. In order to obtain higher temperature hot water, the water in this section of the connecting pipeline will be discharged in vain, causing inconvenience and waste of water resources. [0004] When a large number of users use water, when the water pressure drops, the water inlet...

AI Technical Summary

Problems solved by technology

[0003] Solar water heaters and gas water heaters are used. Since the water heater is far away from the water outlet at the end, there is a long connecting pipeline in the middle. Before continuous use every time, the water temperature in the connecting pipeline often cannot meet the user's requirements.

In order to obtain hot water at a higher temperature, the water in this section of the connecting pipeline will be drained in vain, causing inconvenience in use and waste of water resources

[0004] When a large number of users use water, when the water pressure drops, the water heater inlet pressure fluctuates, causing the outlet water temperature to fluctuate, resulting in an uncomfortable feeling

[0005] When using a storage-type water heater, it is necessary to heat the water in the storage tank first. If there are many users, the water heated in the storage tank cannot meet the usage requirements, and it is necessary to wait for the water heater to heat the water in the storage tank, otherwise it cannot be reached Use temperature; if the number of users is small, the hot water in the water storage tank will slowly become cold, wasting energy; secondly, if the water is stored in the water storage tank for a long time, the water storage tank is prone to rust and cause the water in the water storage tank to deteriorate

Images