A distributor for falling film evaporator of low pressure refrigeration system

A falling-film evaporator, refrigeration system technology, applied in evaporator/condenser, refrigerator, refrigeration components, etc., can solve the problem of abnormal formation of liquid film, poor heat exchange effect of evaporative heat exchange tube, uneven distribution of refrigerant, etc. question

Active Publication Date: 2022-03-18
顿汉布什(中国)工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing drip type distributor is provided with a liquid outlet hole on the bottom plate of the channel assembly, and the liquid refrigerant directly drips into the drip tray through the liquid outlet hole, causing the liquid refrigerant to splash in the drip tray. The refrigerant in the drip pan is unevenly distributed, so that the refrigerant dripped on the evaporator tube by the drip pan is unevenly distributed, and the refrigerant on the part of the evaporating heat exchange tube is too small to form a liquid film normally, resulting in evaporation The heat exchange effect of the heat exchange tube is poor, which affects the overall cooling effect of the air conditioning system

Method used

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  • A distributor for falling film evaporator of low pressure refrigeration system
  • A distributor for falling film evaporator of low pressure refrigeration system
  • A distributor for falling film evaporator of low pressure refrigeration system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Please refer to figure 1 with figure 2 As shown, the invention discloses a distributor for a falling film evaporator of a low-pressure refrigeration system, which includes a gas-liquid separator 1, a channel assembly 2 and a drip tray 3;

[0039] Described gas-liquid separator 1 comprises bottom plate one 1-3 and the top plate one 1-2 that is installed on described bottom plate one 1-3, and described bottom plate one 1-3 and described top plate one 1-2 cooperate to form gas-liquid In the separation chamber, the top plate 1-2 includes a connected liquid inlet plate and a gas storage plate, the liquid inlet plate is provided with a liquid inlet 1-1, and the gas storage plate is provided with an air outlet, and the outlet The air port communicates with the air guide cover 1-4, and the bottom plate 1-3 is provided with a liquid outlet 1-5.

[0040] In this embodiment, the air guiding cover 1-4 is arranged at the end of the gas storage plate and away from the liquid inlet...

Embodiment 2

[0055] Different from Embodiment 1, Embodiment 2 provides a distributor for a falling film evaporator in a low-pressure refrigeration system that further includes a baffle 4 .

[0056] Please refer to image 3 As shown, a distributor for a falling film evaporator of a low-pressure refrigeration system includes a gas-liquid separator 1, a channel assembly 2 and a drip tray 3, and the channel assembly 2 is arranged in the drip tray 3, The gas-liquid separator 1 is installed on the end plate 3-2, the channel assembly 2 includes a top plate 2-1 and a bottom plate 2-2 that cooperate to form a sealed cavity, and the top plate 2-1 is There is a liquid inlet pipe 2-3 and a plurality of liquid discharge holes 2-5, the liquid inlet pipe 2-3 corresponds to the liquid outlet 1-5, and the plurality of liquid discharge holes 2-5 are along the The length direction of the top plate 2-1 is uniformly arranged. Baffles 4 are provided on both sides of the channel assembly 2, and the baffles 4 a...

Embodiment 3

[0060] Different from Embodiment 1, the distributor provided in Embodiment 3 for a falling film evaporator of a low-pressure refrigeration system further includes a baffle 4, and the baffle 4 is L-shaped.

[0061] Please refer to Figure 4 to Figure 7 As shown, a distributor for a falling film evaporator in a low-pressure refrigeration system includes a gas-liquid separator 1, a channel assembly 2 and a drip tray 3, and the channel assembly 2 is placed on a drip tray through a support plate 2-4. In the tray 3, the baffle 4 is L-shaped. The baffle 4 includes a short side 4-1 and a long side 4-2. The baffle 4 is placed on the drip tray 3 through the short side 4-1. and the short side 4-1 is located above the drain hole 2-5, and the distance between the two long sides 4-2 is greater than the width of the drip tray 3.

[0062] The height of the support plate 2-4 is equal to the height of the end plate 3-2 of the drip tray 3, and the short side 4-1 of the baffle plate 4 is placed ...

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PUM

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Abstract

The invention relates to a distributor for a falling film evaporator of a low-pressure refrigeration system, which includes a gas-liquid separator, a channel assembly and a drip tray; the gas-liquid separator includes a gas-liquid separation chamber formed by cooperation of a bottom plate and the top plate , the top plate includes a connected liquid inlet plate and a gas storage plate, the liquid inlet plate is provided with a liquid inlet, the gas storage plate is provided with an air outlet, the air outlet is connected to the air guide cover, and the bottom plate is provided with a liquid outlet; The channel assembly includes the top plate 2 and the bottom plate 2 that cooperate to form a sealed cavity. The top plate 2 is provided with a liquid inlet pipe and a plurality of liquid discharge holes. The liquid inlet pipe corresponds to the liquid outlet. The length direction is set; the drip tray includes a rectangular shell, the bottom plate 3 of the drip tray is provided with a plurality of drip holes, the channel assembly is arranged in the drip tray, and the gas-liquid separator is on the end plate of the drip tray. The liquid discharge hole reduces the speed of the liquid refrigerant flowing to the drip tray, solves the problem of splashing, makes the refrigerant in the drip tray evenly distributed, and ensures the heat exchange effect of the heat exchange tube.

Description

technical field [0001] The invention relates to the technical field of HVAC systems, in particular to a distributor for a falling film evaporator of a low-pressure refrigeration system. Background technique [0002] In the low-pressure air-conditioning system, the throttled gas-liquid two-phase refrigerant enters the drip distributor in the evaporator, and then passes through the distributor for gas-liquid separation so that the gas is discharged from the distributor, and the liquid refrigerant enters the drip pan. The liquid refrigerant drops on the evaporating heat exchange tube under the action of gravity, forming a wrapped liquid film on the evaporating heat exchange tube, and exchanges heat with the refrigerant inside the evaporating heat exchange tube to produce a cooling effect. [0003] The falling film drip distributor is an important component of the falling film low pressure system evaporator, which determines the heat transfer performance of the falling film evap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B39/02F28F25/06
CPCF25B39/028F28F25/06F25B2339/021
Inventor 王明君肖仁华文志成张鹏
Owner 顿汉布什(中国)工业有限公司
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