A sink composed of metal, preferably composed of a solid metal block, in particular composed of aluminium, and also to a method and a tool for the production of same. The heat sink has a plurality of fluid lines for conducting cooling fluid which are separated from one another by heat sink ribs arranged between them, which are arranged next to one another and which run in a parallel manner. It is characterized in that the fluid lines are formed by grooves which are milled into the metal.

The disclosure relates to a heat exchanger. The heat exchanger includes a shell and heat exchange tube bundles located in the shell, the shell has an inlet and an outlet, and a refrigerant flows in through the inlet, exchanges heat with a fluid in the heat exchange tube bundles, and then flows out from the outlet, and the outlet is provided with an extension section that extends into an interior of the shell and has a receiving portion configured to receive at least a part of a liquid in the refrigerant flowing toward the outlet after heat exchange. The disclosure is easy to manufacture, install and maintain, and has a low cost. By optimizing the structure of an outlet pipeline of the heat exchanger, the influence of liquid carryover can be effectively controlled, and the overall performance, safety and reliability of the system can be enhanced.

The present invention discloses an oral scanner, including an outer casing, a reflector, a heat source, an optical module and a forced convection element. The outer casing has a cavity. The reflector is located at the front end of the cavity. The heat source is located in the outer casing. The optical module is located in the casing. A heat channel is formed between the optical module and the outer casing. The forced convection element is disposed in the heat channel and configured to forcedly dissipate the waste heat of the heat source to the cavity to heat the reflector. Thus, the temperature of the heat source can be reduced, and vapor will not be generated on the reflector heated by the waste heat.

A heat exchanger includes a plurality of fins extending along upper and lower directions, and a flat tube extending crosswise to the plurality of fins. Each of the plurality of fins has a first side edge portion and a second side edge portion, the first side edge portion and the second side edge portion extending along the upper and lower directions. The flat tube has end portions in the longitudinal axis direction of the flat tube, the end portions including a first end portion and a second end portion. The first end portion is positioned closer to the first side edge portion than the second end portion is to the first side edge portion. Each of the plurality of fins includes at least one water guide portion formed at at least one of a position between the first side edge portion and the first end portion, and a position between the second side edge portion and the second end portion, the water guide portion extending in the upper and lower directions, a lower edge portion positioned below the flat tube in the upper and lower directions, and a protruding edge portion positioned below the water guide portion and protruding downwardly relative to the lower edge portion.

A heat exchanger includes a plurality of fins extending along upper and lower directions, and a flat tube extending crosswise to the plurality of fins. Each of the plurality of fins has a first side edge portion and a second side edge portion, the first side edge portion and the second side edge portion extending along the upper and lower directions. The flat tube has end portions in the longitudinal axis direction of the flat tube, the end portions including a first end portion and a second end portion. The first end portion is positioned closer to the first side edge portion than the second end portion is to the first side edge portion. Each of the plurality of fins includes at least one water guide portion formed at at least one of a position between the first side edge portion and the first end portion, and a position between the second side edge portion and the second end portion, the water guide portion extending in the upper and lower directions, a lower edge portion positioned below the flat tube in the upper and lower directions, and a protruding edge portion positioned below the water guide portion and protruding downwardly relative to the lower edge portion.

A method for manufacturing a roll-bond heat exchanger has steps of: (1) A preparing step: preparing an in-process roll-bond plate that has a main plate with a bulged structure, and a degassing portion with a tube; (2) A degassing step: removing air from the bulged structure through the tube; (3) A filling step: filling refrigerant into the bulged structure; (4) A pressing step: pressing the bulged structure flat to form a pressed portion; (5) A cutting step: cutting the degassing portion to form a cut portion on the main plate; and (6) A sealing step: welding the cut portion. The main plate and the degassing portion are integrally formed as a single part and the degassing portion is able to be directly connected with the vacuum filling machine. Accordingly, processing steps and manpower for manufacturing the roll-bond heat exchanger are reduced.

A heat transfer medium liquid circulation flow channel having a first heat exchange unit exchanging heat to a second heat exchange unit is provided, and a fixed amount of first heat transfer medium liquid circulates therein. A feed pipe couples heat source holding second heat transfer medium liquid having temperature difference from the first medium liquid to the heat transfer medium liquid circulation flow channel. The feed pipe is coupled to an inlet end side of the first heat exchange unit and a discharge pipe is coupled to an outlet end side thereof. A necessary amount of second medium liquid is supplied to the inlet end side via the feed pipe so that a detected temperature of the first medium liquid in the outlet end maintains required set temperature. The same amount of the first medium liquid as the supplied second medium liquid is discharged out of the discharge pipe.

A heat exchange system for transferring heat energy to control the temperature of a building comprising: a first heat exchanger having a first and second inlet and a first and second outlet wherein waste water flows through said first inlet of said first heat exchanger and out said first outlet while a water supply flows through said second inlet through said first heat exchanger and out said second outlet so as to transfer heat energy between said waste water and said water supply; and a second heat exchanger having a first and second inlet and a first and second outlet wherein domestic water flows through said first inlet, through said second heat exchanger and out said first outlet while said water supply from said second outlet of said first heat exchanger flows through said second inlet, through said second heat exchanger and out said second outlet so as to further transfer heat energy between said domestic water and said water supply from said second outlet of said second heat exchanger and control the temperature of said building.

A heat exchanger, a heat exchanger unit, and a refrigeration cycle apparatus in which frost melt water is inhibited from reaching an upper surface of a header include: heat transfer tubes arranged in parallel with each other; a fin connected to one of the heat transfer tubes; and a header connected to the heat transfer tubes and having a header end surface along a direction in which the heat transfer tubes are arranged in parallel. The fin has an edge facing the header and extends in a first direction perpendicular to the axes of the heat transfer tubes. An end portion of the fin projects in the first direction relative to the header end surface, and another end portion of the fin in the first direction is positioned closer in the first direction to the heat transfer tubes than the header end surface is.

A heat exchange structure includes a primary heat exchange body with a first fluid channel fluidly separated from a second fluid channel by a barrier channel, an inlet manifold in fluid communication with the first fluid channel, and a secondary heat exchange body. The secondary heat exchange body is in fluid communication with the barrier channel, is arranged within the inlet manifold, and fluidly couples the barrier channel to the external environment. Fluid systems and heat exchange methods are also described.