Heat pump water heating system with function of divided-flow reinforced heat recovery

Abstract

Disclosed is a heat pump water heating system with a function of divided-flow reinforced heat recovery. The heat pump water heating system with the function of divided-flow reinforced heat recovery comprises a first heat pump device, a second heat pump device, a heating device, a first inlet water flow path and a second inlet water flow path, wherein the heating device is used for heating water flow. The first heat pump device comprises a first compressor, a first condenser, a first throttling device and a first evaporator, wherein the first compressor, the first condenser, the first throttling device and the first evaporator are combined to form a circulation circuit. The second heat pump device comprises a second compressor, a second condenser, a second throttling device and a second evaporator, wherein the second compressor, the second condenser, the second throttling device and the second evaporator are combined to form a circulation loop. The first inlet water flow path passes through the first condenser and the second evaporator, the second inlet water flow path passes through the first evaporator, the heating device and the second condenser, the heating device is arranged between the first evaporator and the second condenser, and an ultraviolet disinfection device is arranged on the second inlet water flow path and arranged between the first evaporator and the second condenser. By the adoption of the structure, the heat absorption effect of the second inlet water flow path is greatly enhanced, refrigerant cannot enter the heating device, the structure is simple, the production cost is low, and the installation difficulty and the maintenance rate are greatly reduced.

Description

technical field [0001] The invention relates to a hot water system, in particular to a heat pump hot water system of split flow enhanced heat recovery. Background technique [0002] When people bathe with hot water in the bathroom, the waste water produced has a high temperature and a large amount of heat energy. In order to make full use of this part of the heat energy, people have proposed a heat pump water heater with two-stage shower waste heat recovery. For example, the patent number is "ZL201320753365.2 "The Chinese patent discloses a bathroom waste heat recovery heat pump hot water system. This structure uses two-stage heat exchange, that is, cold water heat exchange and refrigerant heat exchange to absorb the heat in the waste water. The waste water is discharged after cooling down. Heat exchange, to achieve the first stage heat exchange, and then the waste heat of the waste water is further absorbed by the refrigerant, which is used to heat the water flow after the ...

AI Technical Summary

Problems solved by technology

This structure makes good use of the two-stage heat exchange method to increase the recovery effect of waste water waste heat, and the auxiliary heating also increases the applicability of the product, but it is precisely the poor adaptability of the two-stage heat exchange on site that restricts its large-scale popularization and application. The reason is that There are two types of pipelines (cold water pipe and refrigerant pipe) built into the waste heat recovery device, which are expensive to manufacture and difficult to install, and easy to cause refrigerant leakage due to disassembly and handling

Images