Dry evaporator refrigerant distribution structure

Abstract

The utility model discloses a kind of dry evaporator refrigerant liquid distribution structure, including liquid equalizing device, the liquid distribution structure of liquid equalizing device is protruding arc structure, arc structure is equipped with upper and lower symmetry several φ3mm through-hole, φ4mm through-hole, φ5mm through-hole and φ6mm through-hole.The utility model can evenly distribute liquid phase refrigerant to each heat exchange tube, improve the heat exchange efficiency of dry evaporator.

Description

Technical Field

[0001] This utility model relates to the field of refrigerant separation structure of a dry evaporator. Background Technology

[0002] In the operation of a dry evaporator, high-temperature, high-pressure liquid refrigerant enters the evaporator. Because the evaporator's internal structure consists of densely arranged heat exchange tubes, refrigerant needs to be separated before entering the tubes. Ideally, the amount of refrigerant flowing into each heat exchange tube after separation should be completely uniform. Existing refrigerant distributors have relatively simple structures, making it difficult to evenly distribute the liquid refrigerant to each heat exchange tube. This results in some heat exchange tubes receiving too much refrigerant, leading to incomplete heat exchange; while other heat exchange tubes receive too little refrigerant, causing dry burning. Both of these situations significantly reduce the overall efficiency of the evaporator.

[0003] Therefore, it is necessary to develop a new type of refrigerant distribution structure for dry evaporators to evenly distribute the refrigerant. Summary of the Invention

[0004] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, this utility model provides a refrigerant liquid distribution structure for a dry evaporator, which can evenly distribute the liquid refrigerant to each heat exchange tube, thereby improving the heat exchange efficiency of the dry evaporator.

[0005] Technical solution: The refrigerant liquid distribution structure of the dry evaporator of this utility model is characterized by: including a liquid equalization device, the liquid distribution structure of the liquid equalization device is a raised arc-shaped structure, and the arc-shaped structure is provided with several symmetrical through holes of φ3mm, φ4mm, φ5mm and φ6mm.

[0006] Among them, several of the φ3mm through holes are arranged in a row.

[0007] Among them, several of the φ4mm through holes are arranged in an arc shape, with the φ4mm through holes located outside the φ3mm through holes.

[0008] Among them, several of the φ5mm through holes are arranged in an arc shape, with the φ5mm through holes located outside the φ6mm through holes.

[0009] Among them, several of the φ6mm through holes are arranged in an arc shape, with the φ6mm through holes located outside the φ5mm through holes.

[0010] The liquid equalization device is equipped with a refrigerant inlet for conveying refrigerant to the dry evaporator, and the liquid equalization device is connected to the heat exchange tubes through end caps and tube sheets.

[0011] A sealing gasket is provided between the end cap and the tube sheet.

[0012] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: The present invention can evenly distribute the liquid refrigerant to each heat exchange tube, thereby improving the heat exchange efficiency of the dry evaporator. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the liquid separation structure of this utility model;

[0015] In the figure, 1 is the liquid equalization device; 2 is the refrigerant inlet; 3 is the sealing gasket; 4 is the tube sheet; 5 is the end cap; 6 is the heat exchange tube; 11 is the φ3mm through hole; 12 is the φ4mm through hole; 13 is the φ5mm through hole; and 14 is the φ6mm through hole. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] The refrigerant distribution structure of this utility model for a dry evaporator includes a liquid equalization device 1. The liquid equalization device 1 has a raised arc-shaped structure with several symmetrically arranged φ3mm through holes 11, φ4mm through holes 12, φ5mm through holes 13, and φ6mm through holes 14. The φ3mm through holes 11 are arranged in a row. The φ4mm through holes 12 are arranged in an arc-shaped row, located outside the φ3mm through holes 11. The φ5mm through holes 13 are arranged in an arc-shaped row, located outside the φ6mm through holes 14. The φ6mm through holes 14 are arranged in an arc-shaped row, located outside the φ5mm through holes 13. The liquid equalization device 1 has a refrigerant inlet 2 for conveying refrigerant to the dry evaporator. The liquid equalization device 1 is connected to the heat exchange tube 6 via an end cap 5 and a tube sheet 4. A sealing gasket 3 is provided between the end cap 5 and the tube sheet 4.

[0018] In operation, the liquid refrigerant enters the evaporator through the evaporator inlet and is then dispersed into each heat exchange tube by the liquid distributor. The liquid distributor has an arc-shaped structure, which causes the refrigerant, which originally entered the evaporator in a direct flow, to become diffused due to pressure after passing through the distributor. The liquid distributor has four sizes of through-holes: ∅3, ∅4, ∅5, and ∅6, arranged separately. The resistance encountered by the refrigerant when flowing through each size of through-hole is different. This resistance difference results in a different outflow rate of refrigerant in each area, ensuring that the refrigerant is evenly distributed to each heat exchange tube.

Claims

1. A refrigerant separation structure for a dry evaporator, characterized in that: It includes a liquid equalization device (1), the liquid equalization device (1) has a convex arc structure, and the arc structure is provided with several symmetrical through holes (11) of φ3mm, (12) of φ4mm, (13) of φ5mm and (14) of φ6mm.

2. The refrigerant separation structure of the dry evaporator according to claim 1, characterized in that: Several of the aforementioned φ3mm through holes (11) are arranged in a row.

3. The refrigerant separation structure of the dry evaporator according to claim 1, characterized in that: Several of the aforementioned φ4mm through holes (12) are arranged in an arc shape, with the φ4mm through holes (12) located outside the φ3mm through holes (11).

4. The refrigerant separation structure of the dry evaporator according to claim 1, characterized in that: Several of the aforementioned φ5mm through holes (13) are arranged in an arc shape, with the φ5mm through holes (13) located outside the φ6mm through holes (14).

5. The refrigerant separation structure of the dry evaporator according to claim 1, characterized in that: Several of the aforementioned φ6mm through holes (14) are arranged in an arc shape, with the φ6mm through holes (14) located outside the φ5mm through holes (13).

6. The refrigerant separation structure of the dry evaporator according to claim 1, characterized in that: The liquid equalization device (1) is provided with a refrigerant inlet (2) for conveying refrigerant to the dry evaporator. The liquid equalization device (1) is connected to the heat exchange tube (6) through an end cap (5) and a tube sheet (4).

7. The refrigerant separation structure of the dry evaporator according to claim 6, characterized in that: A sealing gasket (3) is provided between the end cap (5) and the tube sheet (4).

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