Evaporator and manufacturing method

Patent metadata

Field	Value
Publication number	US-2020232688-A1
Application number	US-202016748088-A
Country	US
Kind code	A1
Filing date	Jan 21, 2020
Priority date	Jan 22, 2019
Publication date	Jul 23, 2020
Grant date	—

Abstract

An evaporator includes an inlet in a lower manifold, an outlet in an upper manifold, and a multiport tube extending between the lower manifold and the upper manifold. The multiport tube provides a flow path between the lower manifold and the upper manifold. One of the outer side walls of the multiport tube is provided with a first evaporator section with a first heat receiving surface and a second evaporator section with a second heat receiving surface, the first and second evaporator sections passing a heat load received via the respective first and second heat receiving surfaces to a fluid in said multiport tube. The first and second heat receiving surfaces form an angle with each other to align with and contact different surfaces of an object to be cooled.

First claim

1 . An evaporator comprising:
an inlet in a lower manifold, an outlet in an upper manifold, and a multiport tube extending between the lower manifold and the upper manifold, wherein the multiport tube is provided with a plurality of separate flow channels which are delimited by outer opposite side walls and internal intermediate walls extending between the outer opposite side walls of the multiport tube, the multiport tube providing a flow path between the lower manifold and the upper manifold, wherein one of the outer side walls of the multiport tube is provided with a first evaporator section with a first heat receiving surface and a second evaporator section with a second heat receiving surface, the first and second evaporator sections passing a heat load received via the respective first and second heat receiving surfaces to a fluid in said multiport tube, and the first and second heat receiving surfaces form an angle with each other to align with and contact different surfaces of an object to be cooled.

2 . The evaporator according to claim 1 , wherein the outer side wall of the multiport tube is provided with a third evaporator section with a third heat receiving surface passing a heat load received to a fluid in said multiport tube, and wherein the third heat receiving surface forms an angle with the first and second heat receiving surfaces.

3 . The evaporator according to claim 1 , wherein the first heat receiving surface, the second heat receiving surface and the third heat receiving surface are plane surfaces.

4 . The evaporator according to claim 1 , further comprising an inlet tube that extends from the inlet and an outlet tube that extends from the outlet.

5 . The evaporator according to claim 1 , wherein at least one of the evaporator sections comprises a metal plate forming the evaporator section, the metal plate having a first surface contacting the multiport tube and another surface, which is opposite to the first surface, and which forms the heat receiving surface which contacts the object to be cooled.

6 . The evaporator according to claim 5 , wherein at least one metal plate is brazed to the multiport tube.

7 . The evaporator according to claim 5 , wherein at least one metal plate is brazed to the outer side wall of the multiport tube to form a first and second material layer in a space between the metal plate and the side wall of the multiport tube in vicinity of the opposite outer edges of the outer side wall of the multiport tube, said first and second material layer delimiting an air channel allowing air to pass between the outer side wall and the metal plate.

8 . The evaporator according to claim 1 , wherein the multiport tube comprises an extruded aluminum tube.

9 . The evaporator according to claim 1 , wherein said evaporator comprises an evaporator for cooling an object including a circuit breaker unit of a generator.

10 . The evaporator according to claim 1 , wherein the multiport tube is manufactured of a metallic material dimensioned to be bent at locations between the evaporator sections to form the angle between the first and second heat receiving surfaces.

11 . A circuit breaker unit forming an object to be cooled and at least one evaporator according to claim 1 that is thermally connected to said object.

12 . A method of manufacturing an evaporator, comprising:
extruding a multiport tube with a plurality of separate flow channels which are delimited by outer opposite side walls and internal intermediate walls extending between the outer opposite side walls of the multiport tube, providing a lower manifold with an inlet at first end of the multiport tube, providing an upper manifold with an outlet at a second end of the multiport tube, and bending the multiport tube to provide a first evaporator section with a first heat receiving surface and a second evaporator section with a second heat receiving surface such that the first and second heat receiving surfaces form an angle with each other.

13 . The method of claim 12 , wherein the first evaporator section comprises a plane first heat receiving surface and the second evaporator section comprises a plane second heat receiving surface.

14 . The method of claim 12 , wherein a metal plate is attached to at least one of the first and second evaporator sections, the metal plate having a first surface attached to the multiport tube and another surface, which is opposite to the first surface, and which forms the heat receiving surface.

15 . An evaporator comprising:
a first manifold; a second manifold; and a multiport tube extending between the lower manifold and the upper manifold, wherein the multiport tube comprises a plurality of separate flow channels for carrying a fluid between the first and second manifolds; wherein the multiport tube comprises a first evaporator section having a first heat receiving surface on a first side of the multiport tube and a second evaporator section having a second heat receiving surface on the first side of the multiport tube; and wherein the first and second heat receiving surfaces form an angle with each other.

16 . The evaporator according to claim 15 , wherein the first and second heat receiving surfaces are planar.

17 . The evaporator according to claim 15 , further comprising:
a third evaporator section having a third heat receiving surface, wherein the third heat receiving surface forms an angle with the first and second heat receiving surfaces.

18 . The evaporator according to claim 15 , further comprising an inlet on the first manifold and an outlet on the second manifold.

19 . The evaporator according to claim 15 , wherein the first evaporator section comprises a first metal plate having a first surface contacting the multiport tube and a second surface, opposite to the first surface, that forms the first heat receiving surface; and
the second evaporator section comprises a second metal plate having a first surface contacting the multiport tube and a second surface, opposite to the first surface, that forms the second heat receiving surface.

20 . The evaporator according to claim 15 , wherein the multiport tube comprises an extruded aluminum tube.

Assignees

• Abb Power Grids Switzerland Ag

Inventors

• Ganter Philipp
• Hiller Andreas
• Agostini Francesco

Classifications

• H05K7/20309 Primary

  Evaporators · CPC title

• F28F1/022

  with multiple channels · CPC title

• F25B39/024 Primary

  with elements constructed in the shape of a hollow panel · CPC title

• F28D2021/0028

  for cooling heat generating elements, e.g. for cooling electronic components or electric devices · CPC title

• F28D2021/0064

  Vaporizers, e.g. evaporators · CPC title