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Marine flowing type evaporator and application method thereof

A flow-type, evaporator technology, applied in the direction of evaporator/condenser, heat exchanger shell, indirect heat exchanger, etc., can solve the problem of low replacement efficiency of evaporator, high refrigerant injection volume, and poor oil return effect To achieve the effect of compact structure, low refrigerant charge and high degree of freedom in structure setting

Pending Publication Date: 2017-07-21
英得艾斯(上海)冷冻空调有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problems to be solved by the present invention are: the existing marine flooded evaporator has poor oil return effect, the evaporator replacement efficiency is low, and the refrigerant injection volume is high. Due to the turbulence of the ship, in order to prevent After the liquid refrigerant sloshes and is discharged from the outlet pipe, it will cause liquid shock risk to the compressor, and the volume of the heat exchanger is forced to be relatively large, which takes up a lot of installation space and has insufficient reliability.

Method used

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  • Marine flowing type evaporator and application method thereof
  • Marine flowing type evaporator and application method thereof
  • Marine flowing type evaporator and application method thereof

Examples

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Embodiment 1

[0040] This example is a flow-type evaporator used in a refrigeration and air-conditioning system with a cooling capacity of 500kW, a chilled water return temperature of 12°C, an outlet water temperature of 7°C, and an evaporation temperature of 6.5°C. The model is FJE150. figure 1 and figure 2 It is installed by the structure, which is composed of end plate 1, cylinder body 2, evaporation tube bundle 3, partition plate 4, liquid inlet 5, air outlet pipe 6, baffle plate 8; end plate 1 and the outer diameter φ500, length 3000mm The steel cylinder 2 forms a closed space, and the air outlet pipe 6 with an outer diameter of φ100mm is arranged vertically near the water outlet, on the upper part of the cylinder 2; the evaporation tube bundle 3 and the end plate 1 are fixed by expansion joints or welding, and the partition plate 4 will evaporate The tube bundle is divided into upper and lower areas, the first evaporation area 301 and the second evaporation area 302, and the flow num...

Embodiment 2

[0045] Figure 7 and Figure 8 It is a combination of flow evaporators. The relative position is stacked up and down. The outlet of the lower flow evaporator is the inlet of the upper flow evaporator, which is realized through the pipeline 9. The combination includes a refrigerant liquid inlet 5 and a gas outlet 6 , the spacing of the baffles 8B becomes larger along the refrigerant flow direction, and the flow evaporator has no partition 4 .

[0046] like Figure 9 As shown, the refrigerant flows in the flow evaporator combination under the action of the baffle plate 8 .

[0047] Both the inside and the outside of the heat exchange tube are subjected to heat exchange enhancement treatment, coupled with the flushing of the refrigerant, the heat transfer coefficient of the present invention is better than that of flooded evaporators and falling film evaporators, due to the simple design and simple manufacture , the cost of this heat exchanger is better than that of the fallin...

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Abstract

The invention relates to a marine flowing type evaporator. The marine flowing type evaporator comprises a cylinder, a heat exchange tube bundle, an exhaust pipe and a liquid inlet; the inner wall of the cylinder is fixedly provided with a set of baffle plates perpendicular to the inner wall of the cylinder; the baffle plates are provided with small holes for enabling the heat exchange tube bundle to penetrate through; the baffle plates divide the internal of the cylinder into refrigerant channels for enabling a refrigerant to scour the heat exchange tube bundle in a reciprocating manner; the exhaust pipe is vertically upward; a liquid inlet pipe can be arranged in any corresponding position on the cylinder according to arrangement of the refrigerant channels; and the flowing direction of non-refrigerant liquid in the heat exchange tube bundle is opposite to the flowing direction of the refrigerant in the cylinder. The marine flowing type evaporator has the advantages of a dry evaporator, a full-liquid evaporator and a falling film evaporator, meanwhile, overcomes the defects of the three evaporators, and has such characteristics as compact structure, convenience in oil return, low injecting quantity of the refrigerant, high heat exchange coefficient and high degree of freedom in liquid inlet setting.

Description

technical field [0001] The invention relates to a marine fluid evaporator and a using method thereof, belonging to the technical field of refrigeration. Background technique [0002] Existing shell and tube evaporators include dry evaporators, flooded evaporators and falling film evaporators. The heat transfer coefficient of the dry evaporator is low, and the heat exchange tube adopts an internally threaded copper tube. It flows out of the evaporator, so the reliability is relatively high. In addition, the refrigerant charge is relatively small, which is suitable for the turbulent occasion where the ship is located. The disadvantage is that the heat exchange effect is not good. [0003] The flooded evaporator has a high heat transfer coefficient. The inner thread of the heat exchange tube is used to enhance the flow, and the outer surface is designed to enhance evaporation. It belongs to pool boiling and has a good heat transfer effect. It is widely used in central air cond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B39/02F28F9/24F28F9/18F28D7/16
CPCF25B39/02F28D7/16F28F9/18F28F9/24
Inventor 赵锁民施新峰徐根斌陆文杰梅丹丹王朝生
Owner 英得艾斯(上海)冷冻空调有限公司
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