Sterilization constant temperature hot water equipment based on pasteurization

Abstract

The invention discloses pasteurization-based sterilization constant-temperature water heating equipment, comprising a first heat exchanger for increasing water temperature to be between 70 DEG C and 90 DEG C to realize a pasteurization function, a second heat exchanger for converting hot water passing through the first heat exchanger into domestic water with required temperature, and a sterilization kettle for hot water storage, wherein first PID temperature control devices for temperature adjustment are mounted on a first flow pass and a second flow pass, a second PID temperature control device for temperature adjustment is mounted on a fourth flow pass, a water outlet of the second flow pass is connected with a water inlet of the fourth flow pass after passing through the sterilization kettle via a pipeline, a water inlet of the fourth flow pass is further provided with a three way control valve, and a water inlet of the first flow pass is provided with a two way control valve. Firstly, normal temperature water is heated up and pasteurization is performed, and then the water is cooled to reach the use temperature of the domestic water, so that the safety, health and comfort of the domestic water are well ensured.

Description

technical field [0001] The invention relates to the technical field of hot water equipment, in particular to a sterilized constant temperature hot water equipment based on pasteurization. Background technique [0002] There are mainly two types of hot water equipment in the prior art. One is volumetric or semi-volume heat exchangers. The low heat exchange efficiency of these products leads to poor immediate water supply capacity. Water storage is used to ensure water supply and temperature. The stability, large floor space and equipment use space, high procurement costs and on-site supporting equipment costs, and a large number of on-site pipeline construction, difficult disassembly and cleaning, and high maintenance costs for later equipment. Due to the above reasons, users who use volumetric or semi-volume heat exchangers to prepare hot water are forced to reduce the configuration of water supply capacity and sacrifice customer satisfaction; [0003] The other type is ins...

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Problems solved by technology

[0003] The other type is instant or semi-instant hot water equipment, which has high heat exchange efficiency and strong instant water supply capacity, but the temperature is unstable, especially in the case of steam heat source, the outlet water temperature is difficult to keep constant, which seriously affects comfort , even poses a safety hazard

[0004] In the hot water system using the above two equipment, because there is only one water temperature, it is difficult to take into account the comfort and hygiene requirements. The water temperature is often maintained between 40 and 50 degrees, which makes bacteria, plankton and parasites and other pathogens breed, the water quality is poor, there is a peculiar smell, and it is harmful to health

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