Abstract: A refrigerant circulation device includes a primary flow path serving as a flow path of a primary refrigerant, a secondary flow path serving as a flow path of a secondary refrigerant, a heat exchanger connected to the primary flow path and the secondary flow path, a pump connected to the secondary flow path, and a housing including an accommodation region extending in a first direction and a second direction intersecting each other and having a dimension longer in the first direction than in the second direction. The housing accommodates the primary flow path, the secondary flow path, the heat exchanger, and the pump in the accommodation region. An entirety of the heat exchanger is positioned on one side in the second direction relative to the pump.

Abstract: A system cools a heat source in a rack, and includes a cold plate that is in thermal contact with the heat source and through which a first refrigerant flows, a radiator that is in contact with air in the rack and through which a second refrigerant different from the first refrigerant flows, and a heat exchanger to exchange heat between the first refrigerant flowing out of the cold plate and the second refrigerant.

Abstract: A liquid feeder includes a first casing with a flow path, and a pump. An upstream flow path located upstream of the pump and communicating with a pump inlet includes a first flow path, a second flow path, a third flow path, a fourth flow path, a fifth flow path, and a sixth flow path that are located on one side in a first direction, another side in the first direction, one side in a second direction, another side in the third direction, one side in the third direction, and another side in the third direction with respect to the pump inlet, respectively.

Abstract: A fluid machine includes a flow path including an outflow port of a fluid, a first portion through which the fluid flows from the other side to one side in a first direction, and a second portion through which the fluid flows. The second portion is located between one end of the first portion in the first direction and the outflow port. The fluid machine further includes a check valve portion that is movable along the first direction in the first portion, and is located at a first position at which the one end is closed, a second position that is located on one side in the first direction and through which the fluid can circulate between the first and second portions, and a third position at which the one end is closed and that is located on another side in the first direction with respect to the first position.

Abstract: A cooling device includes a first component, a second component, and a shielding portion. The first component cools a heat generating component. The second component is different from the first component. The shielding portion performs shielding between the first component and the second component. The shielding portion includes a conductive material.

Abstract: A cylinder includes a cylindrical portion, an insertion portion, and a first sealing portion. The cylindrical portion has a central axis, extends in an axial direction along the central axis, and allows liquid to flow. The insertion portion extends along the central axis and is inserted into the inside of the cylindrical portion. The first sealing portion seals a space between the cylindrical portion and the insertion portion. The insertion portion includes a recessed portion and a second sealing portion. The recessed portion is annular. The recessed portion is located along an outer peripheral surface of the insertion portion and accommodates the first sealing portion. A second sealing portion seals a space between a step on a bottom surface of the recessed portion and the first sealing portion.

Abstract: A tank includes a housing, a tank chamber inflow hole, a tank chamber outflow hole, and a protruding flow path. The housing includes a tank chamber. Liquid flows into the tank chamber from the tank chamber inflow hole. Liquid in the tank chamber flows out from the tank chamber outflow hole. The protruding flow path is connected to the tank chamber outflow hole, and protrudes into the tank chamber from the tank chamber outflow hole. With this arrangement, outflow of gas from the tank chamber through which liquid flows is suppressed.

Abstract: A container includes a first container portion and a second container portion. The first container portion includes a flow path therein through which liquid passes. The second container portion is connected to the flow path and is capable of containing the liquid. The second container portion includes a reservoir and a changing assembly. The reservoir can store the liquid in at least a portion thereof. The changing assembly changes the volume of the reservoir according to a change in the liquid.

Abstract: A cooling device includes a pump assembly to circulate a refrigerant, a tank to accommodate the refrigerant, and a heat exchanger to cool the refrigerant circulating in the tank and the pump assembly. The pump assembly and the tank are connected via a first flow path having a tubular shape. An end portion positioned on a vertically upper side of the tank is above an end portion on a vertically upper side of the pump assembly. One end portion of the first flow path is connected to a surface facing a vertically lower portion of the tank.

Abstract: A pump device includes a first pump, a second pump, and a casing. The first pump and the second pump are centrifugal pumps. The casing includes a first pump chamber in which the first pump is located and a second pump chamber in which the second pump is located. The first pump chamber includes a first bottom surface, a first side surface, a first inlet, and a first outlet. The first bottom surface is located on one side in the first direction with respect to a first motor of the first pump. The first side surface is connected to the first bottom surface and extends in the first direction. The first outlet is open with respect to the first side surface. The second pump chamber includes a second bottom surface, a second side surface, a second inlet, and a second outlet.

Abstract: A cooling assembly includes a cold plate in contact with a heat generating component, a housing on one side of the cooling assembly in a first direction with respect to the cold plate, a first wall located between the housing and the cold plate, and a second wall separating a plate chamber defined by the housing and the first wall into a first plate chamber and a second plate chamber adjacent to each other in a second direction orthogonal to the first direction. The first wall includes a first through hole opposing the cold plate in the first plate chamber and a second through hole opposing the cold plate in the second plate chamber.

Abstract: A refrigerant circulation device includes a housing including an opening, a protrusion protruding from the housing, and a pump movable in a first direction in an internal space of the housing through the opening and mounted at a mounting position on one side in the first direction relative to the opening. The pump includes a stopper movable between a first position that does not overlap with the protrusion and a second position that overlaps with the protrusion and is on one side in the first direction relative to the protrusion.

Abstract: A liquid feeder includes a pump which is prevented from idling, and a replenisher including a cylinder that is a bottomed tube including an opening on a side adjacent to a communication flow path, the opening being connected to the communication flow path, and that is capable of accommodating a liquid in at least a portion of the cylinder, a seal that is housed in the cylinder in a movable manner along the cylinder, and seals the liquid in the cylinder, and a pressurizer to pressurize the seal toward a pump chamber.

Abstract: A heat dissipation device includes a first heat dissipator, a second heat dissipator, a first tank connected to one side of each of the first heat dissipator and the second heat dissipator in a first direction, and a second tank connected to another side in the first direction. A coolant flows through an inside of the first heat dissipator, the second heat dissipator, the first tank, and the second tank. The first tank includes a tank-side first outflow port through which the coolant flows out to a first cooling device, and a tank-side first inflow port through which the coolant from the first cooling device flows in. The second tank includes a tank-side second outflow port through which the coolant flows out to a second cooling device, and a tank-side second inflow port through which the coolant from the second cooling device flows in.

Abstract: A heat dissipation device includes a radiator, a first tank, and a pump assembly. The radiator cools liquid and extends in a first direction. The first tank is connected to the radiator, and the liquid passes through the first tank. The pump assembly is connected to the first tank and circulates the liquid flowing in from the first tank. The radiator includes a pipe through which the liquid passes. The pipe extends along the first direction. The pump assembly is located on one side in the first direction of the radiator. The pump assembly includes a first pump, a second pump, and a flow path portion. The first pump feeds and circulates the liquid. The second pump feeds and circulates the liquid. The flow path portion guides the liquid fed from the first pump and the second pump toward an outside of the pump assembly.

Abstract: A cooling assembly includes a radiator, a pump and a casing. The radiator includes a plurality of refrigerant flow paths and a plurality of ventilation paths. The radiator is operable to cool a refrigerant circulating in the plurality of refrigerant flow paths with air flowing through the plurality of ventilation paths. The pump is connected to the radiator to pressurize the refrigerant. The casing accommodates the radiator and the pump. The radiator is inclined with respect to a first surface of the casing. At least a portion of the pump is positioned between the radiator and the first surface.

Abstract: A cooling unit includes a cold plate extending in a horizontal direction, a tank defining a tank chamber that stores a refrigerant, the tank including an outer tank surface and an inner tank surface, and a pump defining a pump chamber, the pump including an outer pump surface and an inner pump surface. The pump chamber is spaced away from and outside of the tank chamber. A portion of the outer tank surface and a portion of the outer pump surface are directly adjacent to one another in the horizontal direction. The pump chamber accommodates a rotating body that transfers the refrigerant. An upper end of the tank chamber in a first direction perpendicular to the horizontal direction is positioned higher than an upper end of the pump chamber in the first direction.

Abstract: A cold plate includes an opposing portion, a cover portion, and a heat exchange chamber. The opposing portion opposes a heat generating component on one side in a first direction. The cover portion is arranged on another side of the opposing portion in the first direction. The heat exchange chamber includes at least the opposing portion and the cover portion to conduct heat from the heat generating component to a refrigerant through the opposing portion. The opposing portion includes a first cooling surface and a second cooling surface. The first cooling surface is provided on the one side in the first direction. The second cooling surface is provided on the one side in the first direction. The second cooling surface is spaced away from the first cooling surface in the first direction.

Abstract: A cooling assembly is connectable with a cold plate that comes into thermal contact with a heat source, and includes a first manifold, a second manifold, and a radiator. The first manifold causes a refrigerant having circulated through a first pipe to flow out from outflow ports toward the cold plate. In the second manifold, the refrigerant flowing into inflow ports from the cold plate circulates through a second pipe. In the radiator, the refrigerant having circulated through the second pipe circulates through the flow paths arranged side by side at intervals. Each of the first and second pipes opposes a portion of the radiator in the first direction.

Abstract: A liquid feeder switches a flow path of a liquid having flowed in from an inflow port to one of a flow path communicating with a first base communication port and a bypass outflow path. When a pump is attached to a base, the bypass outflow path is closed to allow the liquid having flowed in from the inflow port to flow to the pump. When the pump is removed from the base, the bypass outflow path is opened to allow the liquid having flowed in from the inflow port to flow from the bypass outflow path to the outflow port. The liquid feeder is able to prevent liquid leakage when a pump of a liquid feeder is replaced or repaired.