Coaxial double-pipe heat exchanger
Technical Field
The utility model belongs to car refrigerating system field, concretely relates to coaxial double pipe heat exchanger.
Background
A heat exchanger (also called heat exchanger) is a device that transfers part of the heat of a hot fluid to a cold fluid. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in chemical industry production, and is widely applied.
At present, heat exchangers used in automobile refrigeration systems mostly have the problem of low heat exchange efficiency.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model discloses make the improvement to the problem that above-mentioned prior art exists, promptly the utility model discloses a coaxial double pipe heat exchanger, it can obviously improve the heat transfer effect.
The technical scheme is as follows: a coaxial double pipe heat exchanger comprising:
the air side pipe is a fold line-shaped pipeline, an air inlet is arranged at the upstream of the air side pipe, and an air outlet is arranged at the downstream of the air side pipe;
the liquid side pipe is sleeved on the outer side of the gas side pipe, the liquid side pipe and the gas side pipe are coaxially arranged, and the inner wall of the liquid side pipe and the outer wall of the gas side pipe form a heat exchange cavity;
the first outer branch pipe is connected with the upstream end of the liquid side pipe and is provided with a liquid inlet;
the second outer branch pipe is connected with the downstream end of the liquid side pipe and is provided with a liquid outlet;
and the flange is connected with the downstream air outlet of the air side pipe.
Furthermore, the inner wall and the outer wall of the gas side pipe are both smooth arc-shaped walls.
Further, the air inlet is of a necking structure.
Further, the gas outlet is of a necking structure.
Has the advantages that: the utility model discloses a coaxial double pipe heat exchanger has following beneficial effect:
the utility model discloses because inner tube outer tube inside and outside wall all is smooth arc pipe wall, liquid heat transfer medium water flows at the passageway convenient, is difficult to form the incrustation scale, guarantees coaxial double pipe heat exchanger's heat exchange efficiency and effect, improves coaxial double pipe heat exchanger's practicality and popularity.
Drawings
Fig. 1 is a schematic view of a coaxial double pipe heat exchanger according to the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view at Q of FIG. 2;
wherein:
the specific implementation mode is as follows:
the following describes the embodiments of the present invention in detail.
As shown in fig. 1-3: a coaxial double pipe heat exchanger comprising:
the device comprises an air side pipe 1, a gas inlet 11 and a gas outlet 12, wherein the air side pipe 1 is a fold line-shaped pipeline, the upstream of the air side pipe 1 is provided with the gas inlet 11, and the downstream of the air side pipe 1 is provided with the gas outlet 12;
the liquid side pipe 2 is sleeved on the outer side of the gas side pipe 1, the liquid side pipe 2 and the gas side pipe 1 are coaxially arranged, and the inner wall of the liquid side pipe 2 and the outer wall of the gas side pipe 1 form a heat exchange cavity;
a first outer branch pipe 3 connected with the upstream end of the liquid side pipe 2, the first outer branch pipe 3 being provided with a liquid inlet 31;
a second outer branch pipe 4 connected to a downstream end of the liquid side pipe 2, the second outer branch pipe 4 being provided with a liquid outlet 41;
and the flange 5 is connected with the downstream of the gas side pipe 1 near the gas outlet 12.
Further, the inner wall and the outer wall of the gas side pipe 1 are both smooth arc-shaped walls.
Further, the air inlet 11 is of a necking structure.
Further, the air outlet 12 is of a necking structure.
The embodiments of the present invention have been described in detail. However, the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by a person of ordinary skill in the art.