Gas-liquid type intercooler

A gas-liquid cooler technology, applied to machines/engines, internal combustion piston engines, mechanical equipment, etc., can solve the problems of heat transfer effect to be improved and flow resistance, etc., to achieve enhanced heat transfer effect and reduced flow resistance , The effect of increasing the convection coefficient

Active Publication Date: 2013-04-24
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to enhance the heat exchange effect, various structures of turbulent flow elements are used in the prior art, such as twisted ribbons, helical coils, coiled filaments, coil springs, etc. The high-temperature compressed air flowing in the heat pipes generates turbulence, thereby enhancing the heat transfer effect, but their heat transfer effect still needs to be improved, and the flow resistance is relatively large

Method used

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Embodiment 1

[0033] see Figure 1-7 , the gas-liquid intercooler of the present invention is mainly composed of an air inlet 1, an air inlet chamber 2, a tube plate 3, a shell 4, a heat exchange tube 5, a spiral baffle 6, a liquid inlet 7, and an exhaust chamber 8 , Exhaust port 9 and drain port 10.

[0034] see figure 1 and Figure 7 , the cross-section of the housing 4 is circular, its two ends are heads 14, and the two ends of its inner cavity are respectively provided with a tube plate 3, and the two tube plates 3 are respectively surrounded by the corresponding head 14 to form two air chambers. chamber, one of which is the air intake chamber 2, and the other is the exhaust chamber 8, and the two heads 14 are respectively provided with an air inlet 1 communicating with the air intake chamber 2 and an exhaust port 9 communicating with the exhaust chamber 8 . The space between the two tube sheets 3 in the shell 4 forms a heat exchange chamber, and the shell 4 at both ends of the heat...

Embodiment 2

[0042] see Figure 8 and Figure 9 , The difference between this embodiment and Embodiment 1 is that in this embodiment, the flow channel is 21 groups of circular through holes 15 distributed around the axis of the spiral spoiler 11, and each group of through holes 15 consists of a spiral One end of the spoiler 11 runs through to the other end; the diameter of the through hole 15 is 2 mm, and the 21 groups of through holes 15 are divided into three parts, the number is respectively 3, 6 and 12, and they are evenly distributed in the diameter of 4mm, 10mm and 16mm on the circumference.

[0043] The helix angle of the spiral spoiler 11 is 60°.

[0044] Embodiments other than the above in this embodiment are the same as in Embodiment 1.

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Abstract

The invention discloses a gas-liquid type intercooler which comprises a housing and a heat exchange pipe which is arranged inside the housing, wherein a spoiler element is arranged inside the heat exchange pipe, the spoiler element is a spiral type spoiler piece, the outer spiral edge of the spiral spoiler piece is connected with the inner wall of the heat exchange pipe, and the spiral spoiler piece is provided with a flow channel which is through along the axial direction of the heat exchange pipe. Under the guidance of the spiral spoiler piece, part of high temperature compressed air performs spiral flow along the spiral spoiler piece inside the heat exchange pipe; simultaneously part of high temperature compressed air flows along the axial flow channel on the spiral spoiler piece; and spiral airflow and axial airflow perform mutual disturbance and produce continuous vortex to be mixed fully; and accordingly the effect of heat transfer is greatly improved. Furthermore, neither a flow dead angle nor an abrupt change position of a cross section is formed in a spiral flow path, so that the flow resistance is reduced.

Description

technical field [0001] The invention relates to an intercooler in a turbocharged diesel engine, in particular to a gas-liquid intercooler. Background technique [0002] Turbocharged engines have become the power core of construction machinery, generator sets, large vehicles and ships because they have greater power and less harmful gas emissions than ordinary engines, and are also being popularized and used in small and medium-sized vehicles . The engine using the turbocharger can increase the output power with the same displacement and little increase in weight, improve energy utilization efficiency, and reduce pollution emissions. The temperature of the air compressed by the turbocharger will reach about 200 degrees Celsius. If it enters the combustion chamber directly without cooling, it will not only affect the charging efficiency of the engine, but also easily cause the engine combustion temperature to be too high, causing knocking and other faults, and increasing the ...

Claims

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Application Information

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IPC IPC(8): F02B29/04
CPCY02T10/146Y02T10/12
Inventor 简弃非李勇军马广青詹伟民
Owner SOUTH CHINA UNIV OF TECH
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