Sewage water source heat pump system

Abstract

The invention relates to a sewage source heat pump system, consisting of a compressor, a condenser, an evaporator, a reversing valve and an expansion valve; wherein, the condenser or the evaporator is designed into a sewage source heat exchanger; the sewage source heat exchanger comprises a sleeve and a heat exchange tube which penetrates the sleeve, a connector joint and a screw cover are arranged between the two ends of the sleeve and the heat exchange tube, and the inlet and the outlet interfaces of a heating medium are opened on the pipe wall of the sleeve; the two ends of the heat exchange tube extending out of the sleeve are provided with a three-way joint and an end cover, and a sewage inlet interface and a sewage outlet interface are arranged along the radial direction of the three-way joint; the heat exchange tube is internally provided with a pitch type chain axle cleaner. In addition, the system is additionally provided with an auxiliary evaporator of the compressor, a filter purifying device and a dosing device. The condenser or the evaporator of the invention adopts the sewage source heat exchanger with the same structure, therefore, the system can run effectively for a long time and the service life of the sewage source heat pump system is prolonged; the added auxiliary evaporator can ensure the system to work normally under overheating or overcooling environmental temperature.

Description

technical field [0001] The invention relates to water source heat pump technology, in particular to a sewage source heat pump system. Background technique [0002] Water source heat pump is a new type of heating and cooling device, because of its excellent characteristics of environmental protection and energy saving, it has attracted people's attention. The evaporators or condensers in the water source heat pump system devices currently on the market are mainly plate-type, cluster-type, fin-type, casing-type and other structures. The evaporators or condensers of these structures cannot be applied to heat pump systems with unnatural water as the heat source, such as urban raw sewage and industrial circulating water. This is because unnatural water, especially raw sewage contains sediment, solid waste, organic matter, microorganisms, etc. During the heat exchange process, not only will the heat exchange pipe be blocked, but also easy to scale, which seriously affects the hea...

AI Technical Summary

Problems solved by technology

The evaporator or condenser of these structures cannot be applied to heat pump systems with non-natural water as the heat source, such as urban raw sewage, industrial circulating water, etc.

This is because unnatural water, especially raw sewage contains sediment, solid waste, organic matter, microorganisms, etc. During the heat exchange process, not only will the heat exchange pipe be blocked, but also easy to scale, which seriously affects the heat exchange effect and makes the The efficiency of the system unit decreases and cannot work stably for a long time

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