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Distributor for falling-film evaporator of low-pressure refrigerating system

A falling-film evaporator, refrigeration system technology, applied in the direction of evaporator/condenser, refrigerator, refrigeration components, etc., can solve the problem of uneven distribution of refrigerant, uneven distribution of refrigerant, and poor heat exchange effect of evaporative heat exchange tube And other issues

Active Publication Date: 2022-01-25
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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  • Distributor for falling-film evaporator of low-pressure refrigerating system
  • Distributor for falling-film evaporator of low-pressure refrigerating system
  • Distributor for falling-film evaporator of low-pressure refrigerating system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Please refer to figure 1 and 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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Abstract

The invention relates to a distributor for a falling-film evaporator of a low-pressure refrigerating system. The distributor comprises a gas-liquid separator, a channel assembly and a dripping plate; the gas-liquid separator comprises a gas-liquid separation cavity formed by matching of a first bottom plate and a first top plate, the first top plate comprises a liquid inlet plate and a gas storage plate which are connected, a liquid inlet is formed in the liquid inlet plate, a gas outlet is formed in the gas storage plate, the gas outlet is communicated with a gas guide cover, and a liquid outlet is formed in the first bottom plate; the channel assembly comprises a second top plate and a second bottom plate which are matched to form a sealed cavity, the second top plate is provided with a liquid inlet pipe and a plurality of liquid drainage holes, the liquid inlet pipe corresponds to the liquid outlet, and the plurality of liquid drainage holes are formed in the length direction of the second top plate; and the dripping plate comprises a rectangular shell, a plurality of dripping holes are formed in a third bottom plate of the dripping plate, the channel assembly is arranged in the dripping plate, and the gas-liquid separator is arranged on an end plate of the dripping plate. The speed of a liquid refrigerant flowing to the dripping plate is reduced through the liquid drainage holes, the splashing problem is solved, the refrigerant in the dripping plate is evenly distributed, and the heat exchange effect of a heat exchange pipe is guaranteed.

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 Applications(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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