A single u-shaped buried heat exchanger

Abstract

The invention relates to a single-U-tube underground heat exchanger. The single-U-tube underground heat exchanger comprises two buried tubes, a U-shaped elbow and a maintaining device, wherein the U-shaped elbow is used for connecting the bottoms of the two buried tubes; the maintaining device is used for maintaining a noncontact state between the two buried tubes; the maintaining device comprisesa supporting body, guide rings, steel cables and a tightening mechanism; the supporting body is fixedly connected with the tops of the two buried tubes; the opposite inner sides of the two buried tubes are correspondingly provided with a plurality of guide rings; the plurality of guide rings on each buried tube are distributed in a spaced manner in the length direction of the corresponding buriedtube; the two steel cables are arranged; the lower end of each steel cable is connected with one end of the U-shaped elbow; and the upper end of each steel cable is connected with the tightening mechanism after penetrating through the plurality of guide rings on one buried tube, wherein the tightening mechanism is arranged on the supporting body and is used for tightening the steel cables. The heat exchanger with the structure can guarantee that all backfilling soil around the buried tubes can be compacted, so the compactness degree of a backfilling material is increased, generation of air cavities is prevented, the heat resistance of the backfilling material is reduced, and the heat transfer efficiency is improved.

Description

technical field [0001] The invention relates to a single U-shaped buried heat exchanger. Background technique [0002] The buried heat exchanger is a device that uses the relatively stable temperature of the underground soil to exchange heat with the soil through the piping system buried deep in the soil around the building. The pipeline system in the soil and the pipeline system in the building are respectively connected with circulating fluid. In winter, the soil acts as a heat source, and the circulating fluid absorbs the heat in the soil, and provides it to the building for heating through the heat pump unit; in summer, the soil As a cooling source, the circulating fluid absorbs the heat in the building and discharges it to the soil through the heat pump unit. Compared with traditional coal and gas heating methods and air-conditioning refrigeration methods, the single U-shaped buried heat exchanger only needs to consume a small amount of electricity to achieve the same ...

AI Technical Summary

Problems solved by technology

After the buried pipes and pipe clamps are installed and the soil is backfilled, due to the lateral barrier of the pipe clamps, it is very easy to cause air pockets under them, which increases the thermal resistance of the backfilled soil and deteriorates the heat transfer effect.

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