A manufacturing method for a vapor chamber, a vapor chamber and a middle frame vapor chamber are disclosed. The manufacturing method for a vapor chamber includes preparing different raw materials for various parts of the vapor chamber, and machining and molding the various parts according to predetermined shapes of the various parts by using corresponding raw materials, assembling the machined and molded various parts of the vapor chamber, and welding and sealing the assembled various parts of the vapor chamber, performing a surface heat treatment on the vapor chamber, performing a passivating treatment on the vapor chamber, assembling the vapor chamber, injecting water into the vapor chamber assembled with the liquid injection pipe, vacuumizing the vapor chamber injected with water, performing a sealing treatment on the vacuumized vapor chamber, and welding the vapor chamber with a reinforcing rib.

A heat exchanger includes a header and an annular core fluidly connected to the header. The annular core includes an inner diameter, an outer diameter, first flow channels arranged in a first set of layers, and second flow channels arranged in a second set of layers and interleaved with the first flow channels. Each of the first flow channels includes a first inlet, a first outlet, and a first axial region extending between the first inlet and the first outlet. Each of the second flow channels includes a second inlet, a second outlet, and a second axial region extending between the second inlet and the second outlet.

A method includes providing a first metal sheet and a second metal sheet, printing a channel pattern on the first metal sheet, bonding the first metal sheet and the second metal sheet to each other, forming a plurality of channels by introducing a fluid between the first metal sheet and the second metal sheet, introducing working fluid in the plurality of channels, sealing the first metal sheet and the second metal sheet, and forming a plurality of through holes in locations where the first metal sheet and the second metal sheet are bonded to each other. The plurality of through holes are arranged in a plurality of rows, each row including at least two through holes, and each location where the first metal sheet and the second metal sheet are bonded to each other includes a single through hole of the plurality of through holes.

A heat exchanger and an air conditioning device are provided. The heat exchanger includes a plurality of fins and a plurality of flat pipes arranged in parallel. Each of the plurality of flat pipes includes a first finned region, a second finned region, and a finless region. An end of the finless region connected to the first finned region is twisted and defined as a first torsion section, the other end of the finless region connected to the second finned region is twisted and defined as a second torsion section, and a portion of the finless region between the first torsion section and the second torsion section is defined as a connecting section.

A heat dissipation device includes a base plate and a plurality of fins arranged on the base plate. Each fin includes a fin body including a first metal sheet and a second metal sheet coupled to each other, wherein the fin body is curved and includes a first portion and a second portion transverse to the first portion, an evaporation channel defined in the first portion, one or more connecting channels disposed in the first portion and in fluid communication with the evaporation channel, a condensation channel defined in the second portion, and one or more auxiliary channels disposed in the second portion and in fluid communication with the one or more connecting channels and the condensation channel.

A heat dissipation device includes a base plate and a plurality of fins arranged on the base plate. Each fin includes a fin body including a first metal sheet and a second metal sheet coupled to each other, wherein the fin body is curved and includes a first portion and a second portion transverse to the first portion, an evaporation channel defined in the first portion, one or more connecting channels disposed in the first portion and in fluid communication with the evaporation channel, a condensation channel defined in the second portion, and one or more auxiliary channels disposed in the second portion and in fluid communication with the one or more connecting channels and the condensation channel.

A preheating device for preheating the fuel of an internal combustion engine with a heating medium has a fuel transport device with a fuel inlet and a fuel outlet, and has a fuel transport channel connecting the fuel inlet and the fuel outlet. The preheating device also has a heating medium transport device with a heating medium inlet and a heating medium outlet, as well as a heating medium transport channel connecting the heating medium inlet and the heating medium outlet and/or at least one heating element. The fuel transport device and the heating medium transport device and/or the at least one heating element are in thermal contact with each other and thus form a heat exchanger via which a fuel transported in the fuel transport device can be heated by a heating medium transported in the heating medium transport device and/or by the at least one heating element.

A freezing plate including freezing tubes having a similar length extending in a longitudinal direction, where each of the tubes has top, bottom, first, and second sides, where the tubes are arranged adjacent and with their longitudinal direction next to each other. An inlet section, where at least part of the inlet section is arranged perpendicular to the longitudinal direction, where the inlet section includes an inlet cavity, which is in fluid communication with the inlet end through an aperture arranged along a longitudinal direction of the inlet section. An outlet section, where at least part of the outlet section is arranged perpendicular to the longitudinal direction, where the outlet section includes an outlet cavity, which is in fluid communication with the outlet end, through an aperture arranged along a longitudinal direction of the outlet section, where the inlet cavity is in fluid communication with the outlet cavity through a conduit.

A heat exchanger assembly and a method for assembling the heat exchanger assembly is provided. The heat exchanger assembly comprises a first heat exchanger and a second heat exchanger, and a subcooler; a first heat exchanger cold box, for accommodating the first heat exchanger and heat exchange fluid pipelines, with a first opening being disposed in a side of the first heat exchanger cold box, and a first group of pipelines extending through the first opening; a second heat exchanger cold box, for accommodating the second heat exchanger and heat exchange fluid pipelines, with a second opening being disposed in a side of the second heat exchanger cold box, and a second group of pipelines extending through the second opening; a subcooler cold box, for accommodating the subcooler and heat exchange fluid pipelines, with a third opening and a fourth opening being disposed in a side of the subcooler cold box, and a third group of pipelines and a fourth group of pipelines extending through the third opening and the fourth opening respectively, wherein the first group of pipelines and the third group of pipelines are connected and encapsulated in a first thermally isolating casing, and the second group of pipelines and the fourth group of pipelines are connected and encapsulated in a second thermally isolating casing.

A protection element for vapor chamber includes a main body and a protection element. The main body is divided into a working zone and a sealing zone. The sealing zone is located around an outer periphery of the working zone and is provided with a notch area, to which a fluid-adding and air-evacuating pipe is connected. The protection element is correspondingly mounted to the notch area to contact with the sealing zone of the main body. With the arrangement of the protection element, the fluid-adding and air-evacuating pipe is protected against collision and impact and accordingly, the main body of the vapor chamber is protected against vacuum and working fluid leakage.