Abstract: According to one embodiment, a cooling device includes: a heat transfer unit thermally connected to a mounted first heating element and a mounted second heating element whose mounted height is higher than that of the first heating element, the heat transfer unit including a passage through which a coolant circulates, a heat-receiving section having a first portion thermally connected to the first heating element and a second portion thermally connected to the second heating element, a heat-sinking section that dissipates heat received by the heat-receiving section, a first plate member in which is formed a first groove corresponding to the passage, and a second plate member that covers the first groove. The heat-receiving section is formed at least one of the first and second plate members.

Abstract: A cooling apparatus comprises an outlet port through which cooling air is applied in a radial direction, a plurality of heat radiating fins which are arranged at intervals and which surround the outlet port, and first to third paths in which liquid coolant flows. The first path extends in the direction the heat radiating fins are arranged and is thermally connected to a second edge of each heat radiating fin. The second path extends in the direction the heat radiating fins are arranged and is thermally connected to a first edge of each heat radiating fin. The third path which connects a downstream end of the first path and an upstream end of the second path.

Abstract: Disclosed herein is an electronic apparatus that comprises a housing, and a circulating path. A heat-generating component is contained in the housing. Liquid coolant for cooling the heat-generating component flows through the circulating path. The circulating path has a first connecting end and a second connecting end connected to the first connecting end. The junction between the first connecting end and the second connecting end is covered with a coolant-absorbent member. The electronic apparatus further includes a leak detection system to alert the user of a fluid leak within the apparatus and a liquid absorption means to absorb any leaking fluid.

Abstract: A cooling unit includes a heat receiving portion thermally connected to a heat generating component, a heat radiating portion which radiates heat generated by the heat generating component, and a circulation path which circulates a liquid coolant between the heat receiving portion and the heat radiating portion. The heat radiating portion includes a first path portion, a second path portion, a third path portion, and a plurality of heat radiating fins. Each of the first and second path portions has a flat pipe through which the liquid coolant flows. The two pipes have cross sections which are elongated in the same direction and facing each other. The heat radiating fins are interposed between the two pipes and thermally connected to the two pipes.

Abstract: A cooling system includes a heat receiving portion thermally connected to a heating element, a heat radiating portion which radiates a heat of the heating element, and a circulation path circulating a liquid coolant between the heat receiving portion and the heat radiating portion. The circulation path includes a reservoir which holds the liquid coolant, wherein the reservoir section includes a third pipe having a first opening end and a second opening end positioned at an opposite side of the first opening end, a first pipe inserted into the first opening end, and a second pipe inserted into the second opening end, and wherein each of the first pipe and the second pipe opens in the third pipe so as to provide gaps respectively, between an inside of the third pipe and an outside of the first pipe and between an inside of the third pipe and an outside of the second pipe.

Abstract: A cooling device comprises a circulation passage through which a liquid coolant flows, and a pump provided in the circulation passage configured to circulate the liquid coolant along the circulation passage. The pump includes, (1) a pump casing including a pump chamber into which the liquid coolant flows, (2) an impeller mounted in the pump chamber to push out the liquid coolant from the pump chamber to the circulation passage, and (3) an injection portion provided in the pump casing configured to inject the liquid coolant to the pump chamber.

Abstract: According to one embodiment, a cooling device comprises a heat receiving member to receive heat from a heat generating element, a circulation path thermally connected to the heat receiving member, the circulation path carrying coolant which the heat is transferred through the heat receiving member, a pump unit to circulate the coolant inside the circulation path, a first heat radiation mechanism including a first heat radiation member thermally connected to the circulation path, and a first fan which sends air toward the first heat radiation member, and a second heat radiation mechanism including a second heat radiation member thermally connected to the circulation path, and a second fan which sends air toward the second heat radiation member.

Abstract: A cooling unit including a fan, a plurality of heat-radiating fins and a tube. Liquid coolant that has absorbed heat from a heat-radiating component is made to circulate in the tube. The fan has an impeller. The draws cooling air at its center part and expels the cooling air at its periphery. The heat-radiating fins oppose the periphery of the impeller. The tube is thermally connected to the heat-radiating fins.

Abstract: An electronic apparatus includes a heat-generating component, a heat receiving portion thermally connected to the heat-generating component, a heat radiating portion to radiate heat generated y the heat-generating component, and a circulation path to circulate a liquid coolant between the heat receiving and radiating portions. The heat radiating portion has a circulation passage defined therein, a first region including a coolant inlet port, and a second region including a coolant outlet port. The circulation passage has first and second circulation passages. The first circulation passage extends from the coolant inlet port in the first region to a position distant from the coolant inlet port, and reaches the second region after passing beside the coolant inlet port again. The second circulation passage extends between the first circulation passage and the coolant outlet port in the second region.

Abstract: A pump has a pump casing and an impeller. The pump casing has a pump chamber, an inlet path through which a liquid is guided to the pump chamber and an outlet path through which the liquid is discharged from the pump chamber. The impeller is housed in the pump chamber. With the rotation of the impeller, the liquid is sucked through the inlet path into the pump chamber and pushed out of the pump chamber into the outlet path. The outlet path has a first opening end which is opened in the pump chamber, and a second opening end located downstream of the first opening end. The first opening end has an opening area larger than that of the second opening end.

Abstract: There is disclosed a pump comprising a pump housing, an impeller, and a motor. The pump housing comprises a pump chamber and at least one communication port opening into this pump chamber. The impeller comprises a plurality of vanes and is rotatably disposed in the pump chamber. The motor has a plurality of phases, and rotates the impeller. The number of communication ports, the number of vanes, and the number of phases of the motor are set in such a manner as to indicate prime numbers.

Abstract: A fluid pump for circulating the cooling liquid to cool the heat-generating part is disclosed.

Abstract: A pump includes: a housing having a heating receiving portion thermally connected to a heat generating element and a pump chamber; a stator; and a rotary member disposed in the pump chamber, and having a stirring portion which stirs a fluid in the pump chamber and a magnet contained within the rotary member.

Abstract: A cooling pump includes a rotor including a rotation axis, a disc fixed with the rotation axis, an impeller fixed with the disc for pressurizing a liquid coolant, and a plurality of permanent magnets arrayed to be fixed with the disc in a ring shape; a case including a pump chamber holding the rotor rotatably, the pump chamber having an inlet and an outlet for the liquid coolant, wherein a part of the bottom wall forming the pump chamber is a heat-receiving portion; a cover including a recess, the cover sealing the case, i.e., pump housing, liquid-tightly; and a circular stator disposed in the recess, the stator generating a rotating magnetic field with a plurality of electromagnets to provide the rotor with torque around the rotation axis, wherein a hydrophilic surface is disposed on the inner surface of the pump chamber.

Abstract: According to one embodiment, a pump housing comprises a heat receiving plate which is thermally coupled to a CPU, and a pump chamber. An impeller to be rotated by a motor is provided in the pump chamber. At least a part of the pump housing is made of resin containing at least one of metal filler, filler of material having lower linear expansion coefficient than the resin, and filler of material having lower water-vapor transmissivity than the resin.

Abstract: According to one embodiment, an electronic apparatus comprises a housing having a bottom wall, a circuit board arranged in the housing, a heat generating element mounted on the circuit board, a heat receiving member which is thermally connected to the heat generating member, a heat radiation member which radiates heat, a pipe which is arranged between the heat receiving member and the heat radiation member, the pipe connecting to the heat receiving member at a first connection portion, and connecting to the heat radiation member at a second connection portion, and a pump which circulates a liquid coolant through the pipe. The first connection portion and the second connection portion are located between the circuit board and the bottom wall.

Abstract: A heat-receiving plate of a pump has a heat-receiving surface and a guide. The heat-receiving surface is thermally connected to a heat-generating body. The guide is provided on the heat-receiving surface. The guide is opposed to the heat-generating body.

Abstract: The cooling unit includes a heat receiving portion, a heat radiating portion and a circulation path. The heat radiating portion has an impeller, a heat-radiating member and a case. The heat-radiating member surround the impeller that applies cooling air. The heat-radiating member has a coolant passage in which liquid coolant flows, and a plurality of heat-radiating fins which are thermally connected to the coolant passage. The case contains the impeller and the heat-radiating member and has at least one outlet port through which the cooling air is expelled.

Abstract: In one embodiment of the invention, a pump includes a pump housing, an impeller, and a motor. The pump housing has a pump chamber and a heat receiving plate to couple to a heat generating unit, such as a CPU. The impeller is provided in the pump chamber. The motor couples to the impeller to rotate it. A region of the heat receiving plate projects further outward than other regions to couple the heat receiving plate to the IC chip.

Abstract: The present invention provides a cooling pump, an electronic apparatus, and a cooling system in which positioning between a heat generating unit and a cooling pump can be achieved easily.