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Flat-tube evaporation and condensation heat exchanger

A technology of evaporative condensation and heat exchanger, which is applied in the direction of evaporator/condenser, heat exchanger shell, refrigerator, etc., which can solve the problem of poor water film formation on the heat exchange plate surface and ensure the integrity of the water film , small size, avoid the effect of cooling water accumulation

Pending Publication Date: 2021-03-30
HANRUN UNITED HIGH TECH DEV BEIJING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a flat tube evaporating and condensing heat exchanger, which adopts the flat tube and the radial separation of the flat tube to effectively solve the problem of poor water film formation on the heat exchange plate surface, and , make full use of the space of the refrigerant channel and improve the heat exchange efficiency

Method used

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  • Flat-tube evaporation and condensation heat exchanger
  • Flat-tube evaporation and condensation heat exchanger
  • Flat-tube evaporation and condensation heat exchanger

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Please refer to Figure 1 to Figure 4 As shown, this embodiment provides a flat tube evaporating and condensing heat exchanger, including at least one heat exchange plate 1, and the heat exchange plate 1 includes at least one heat exchange unit; the heat exchange unit includes a cooling tube 11 and at least one condensation pipe 12; the cooling pipe 11 and the condensation pipe 12 are all flat pipes, and the height of the flat pipe is greater than the width; the cooling pipe 11 and the condensation pipe 12 are all left and right directions and are vertically arranged without gaps Plate-shaped structure, the two sides of the plate-shaped structure constitute the evaporative heat exchange plate surface; the cooling tube 11 of the same heat exchange unit is located on the top side of the heat exchange unit; the tube wall of the cooling tube 11 is distributed near the bottom side. A number of water outlet holes 13; the condensation pipe 12 is provided with at least one inne...

Embodiment 2

[0046] Please refer to Figure 5 to Figure 13 As shown, this embodiment also provides a flat tube evaporating and condensing heat exchanger. Pipe 14; the inner pipe 14 is located in the central area of ​​the condensation pipe 12; there is a passage between the outer wall of the inner pipe 14 and the inner wall of the condensation pipe 12, and the passage is divided into at least two refrigerant passages by the inner partition 121 The refrigerant passage between the condensing pipe 12 and the inner pipe 14 is used to exchange heat between the delivered refrigerant and the water curtain on the outer wall side of the condensing pipe 12, and is also used to exchange the delivered refrigerant with the water in the inner pipe hot, where, as Figure 5 As shown, the inner tube and the outer tube of this embodiment are arranged concentrically.

[0047] A flat tube evaporating and condensing heat exchanger in this embodiment provides a cascaded heat exchange design, adopts an inner tu...

Embodiment 3

[0052] Please refer to Figure 14 As shown, this embodiment provides a flat tube evaporating and condensing heat exchanger. The difference between this embodiment and Embodiment 1 or 2 is that the evaporating and condensing heat exchanger includes a plurality of heat exchange plates (specifically as Figure 14 As shown, there are ten heat exchange plates); a plurality of heat exchange plates are arranged at intervals; the evaporation and condensation heat exchanger also includes a refrigerant steam main pipe 3, a refrigerant liquid main pipe 4, and a water inlet main pipe 2; each heat exchange plate The first refrigerant delivery port 19 is communicated with the refrigerant liquid main pipe 4; the second refrigerant delivery port 18 of each heat exchange plate is communicated with the refrigerant steam main pipe 3; the water inlet 17 of each heat exchange plate is communicated with the water inlet main pipe 2 .

[0053] Here, taking Embodiment 2 and Embodiment 3 as examples, ...

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Abstract

The invention relates to a flat tube evaporation and condensation heat exchanger. The flat tube evaporation and condensation heat exchanger comprises at least one heat exchange plate, each heat exchange plate comprises at least one heat exchange unit, and each heat exchange unit comprises a cooling pipe and at least one condenser pipe; both the cooling pipes and the condenser pipes are flat pipes,and the height of each flat pipe is greater than the width of each flat pipe; the cooling pipes and the condenser pipes are vertically arranged in a left-right direction and in a seamless mode to form a plate-shaped structure, the two faces of the plate-shaped structure form an evaporation heat exchange plate face, the cooling pipes of one same heat exchange unit are located on the topmost side of the heat exchange unit, a plurality of water outlet holes are formed in the position, close to the bottom side, of the pipe wall of each cooling pipe, at least one inner partition plate consistent with the condenser pipe in length direction is arranged in the condenser pipe, and a channel in the condenser pipe is divided into at least two refrigerant channels by the inner partition plate. According to the flat tube evaporation and condensation heat exchanger, the flat tubes and the radial separation mode of the flat tubes are adopted, the problem that the water film-forming property of the heat exchange plate face is poor is effectively solved, the space of the refrigerant channels is fully utilized, and the heat exchange efficiency is improved.

Description

technical field [0001] The invention relates to the field of condensation heat exchangers, in particular to a flat tube evaporation condensation heat exchanger. Background technique [0002] Existing water-cooled chillers generally use shell-and-tube condensers or evaporative condensers; for evaporative condensers, for example: Chinese patent application CN2020104015228 discloses a cascade evaporative-condensing heat exchanger, which uses circular tubes and cloth Although the water tank can improve the heat exchange efficiency and reduce the volume of the heat exchanger, it still has the following problems: 1. The round tube heat exchange tube still has a small curvature on the outer surface of the tube, so that the gap between two adjacent heat exchange tubes has formed. 2. It has been disclosed that the refrigerant channel of the heat exchanger is a single-tube process. After the refrigerant vapor is liquefied, it forms accumulation at the bottom of the heat exchange tube....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F1/02F28F9/02F25B39/00
CPCF25B39/00F28F1/02F28F9/02
Inventor 李国斌李一杰李一搏
Owner HANRUN UNITED HIGH TECH DEV BEIJING CO LTD