Heat exchanger

一种热交换器、传热管的技术，应用在热交换设备、间接换热器、换热器类型等方向

Active Publication Date: 2015-01-21
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, the sudden change in direction of the vapor refrigerant flow caused by the shroud will cause most of the entrained liquid droplets to be removed from the vapor refrigerant flow

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 2 example

[0074] Now refer to Figure 14 to Figure 19 , the evaporator 101 according to the second embodiment will be described. In view of the similarity between the first and second embodiments, parts of the second embodiment that are identical to parts of the first embodiment are given the same reference numerals as parts of the first embodiment. In addition, the description of the parts of the second embodiment that are the same as those of the first embodiment may be omitted for the sake of simplicity.

[0075] The evaporator 101 according to the second embodiment is in addition to the geometry of the tube bundle 130, and in Figure 2 to Figure 7 The evaporator 1 of the first embodiment shown in is basically the same. In the second embodiment, the heat transfer tubes 31 are arranged such that the horizontal spacing between adjacent columns in the columns in the outer area of ​​the tube bundle 130 is greater than the above-mentioned horizontal spacing in the inner area of ​​the tu...

no. 3 example

[0085] Now refer to Figure 20 to Figure 25 , the evaporator 201 according to the third embodiment will be described. In view of the similarity between the third embodiment and the first embodiment and the second embodiment, for the parts of the third embodiment that are the same as the parts of the first embodiment or the second embodiment, mark the same as the first embodiment or the second embodiment The parts of the two embodiments have the same reference numerals. In addition, descriptions of parts of the third embodiment that are the same as those of the first embodiment or the second embodiment may be omitted for the sake of brevity.

[0086] The evaporator 201 according to the second embodiment, except the geometry of the tube bundle 230, is the same as in Figure 2 to Figure 7 The evaporator 1 of the first embodiment shown in is basically the same. In the third embodiment, the vertical gap between adjacent heat transfer tubes of the heat transfer tubes 31 in each o...

no. 4 example

[0097] Now refer to Figure 26 with Figure 27 , the evaporator 301 according to the fourth embodiment will be described. In view of the similarity between the first to fourth embodiments, for the parts of the fourth embodiment that are the same as those of the first embodiment, the second embodiment or the third embodiment, mark the same as the first embodiment, the second embodiment example or the same reference numerals as the third embodiment. Furthermore, descriptions of parts of the fourth embodiment that are the same as those of the first embodiment, the second embodiment, or the third embodiment may be omitted for the sake of brevity.

[0098] In the evaporator 301 of the fourth embodiment, the intermediate tray portion 60 is disposed between the heat transfer tubes 31 in the supply line group and the heat transfer tubes 31 in the return line group. The middle tray part 60 includes a plurality of discharge holes 60a through which liquid refrigerant is discharged dow...

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PUM

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Abstract

A heat exchanger is adapted to be used in a vapor compression system, and includes a shell, a distributing part and a tube bundle. The tube bundle includes a plurality of heat transfer tubes arranged in a plurality of columns extending parallel to each other when viewed along the longitudinal center axis of the shell. The heat transfer tubes has at least one of: an arrangement in which a vertical pitch between adjacent ones of the heat transfer tubes in at least one of the columns is larger in an upper region of the tube bundle than in a lower region of the tube bundle; and an arrangement in which a horizontal pitch between adjacent ones of the columns is larger in an outer region of the tube bundle than in an inner region of the tube bundle.

Description

technical field [0001] The present invention generally relates to a heat exchanger suitable for use in a vapor compression system. More specifically, the present invention relates to a heat exchanger having a prescribed configuration of tube bundles to prevent steam flow velocity from exceeding a prescribed level. Background technique [0002] Vapor compression refrigeration is the most commonly used method in air conditioning of large buildings and the like. Conventional vapor-compression refrigeration systems typically have an evaporator, which is a heat exchanger that allows the refrigerant to evaporate from a liquid to a gas while absorbing heat from the liquid to be cooled passing through the evaporator. One type of evaporator includes a tube bundle having a plurality of horizontally extending heat transfer tubes through which a liquid to be cooled circulates and is housed inside a cylindrical shell. Several methods are known for evaporating refrigerant in this type o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D3/02F25B39/02F28D7/16F28F1/00
CPCF25B39/02F28D3/02F28D7/1607F25B2339/0242F28F1/006F25B39/028F28D3/04
Inventor 沼田光春笠井一成
Owner DAIKIN IND LTD
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