摘要:
A cooling apparatus includes a refrigerant tank containing boiling and condensing refrigerant and a radiator for cooling the refrigerant. The radiator is connected to the refrigerant tank on a front surface thereof, and hot objects to be cooled are attached to a heat-receiving surface formed on a rear surface of the refrigerant tank. The refrigerant is circulated in the apparatus so that the refrigerant is vaporized in the refrigerant tank and condensed in the radiator. The radiator is connected to the refrigerant tank by inserting a pair of header tanks thereof into the refrigerant tank. The insertion length is controlled to obtain good heat conductivity between the radiator and the refrigerant tank and to avoid deformation of a radiator fin contacting the refrigerant tank. Holes for mounting a substrate carrying the hot objects may be made on enlarged portions of a cover plate closing the refrigerant tank. The heat-receiving surface may be elevated from the rear surface of the refrigerant tank to avoid interference between other components mounted on the substrate and the rear surface of the refrigerant tank.
摘要:
A cooling device for cooling a heat-generating member includes a refrigerant tank for boiling liquid refrigerant by heat from the heat-generating member and a radiator for cooling and condensing gas refrigerant from the refrigerant tank. The refrigerant tank has therein a plurality of refrigerant passages defined by ribs which are integrally formed with any one of opposite wall parts of the refrigerant tank. The ribs continuously extend in an up-down direction to be slightly longer than an up-down dimension of a boiling surface of the refrigerant tank. In the cooling device, because each passage width of the refrigerant passages is set to be equal to or smaller than double Laplace length, an outer diameter of bubbles in the refrigerant passages becomes larger, and liquid refrigerant can be moved upwardly by bubbles. Accordingly, it can restrict liquid refrigerant surface from being lowered even when gas-generating amount is increased.
摘要:
A cooling device boiling and condensing refrigerant includes a refrigerant tank having a boiling space in which a part of liquid refrigerant is boiled and vaporized to gas refrigerant by absorbing heat from a heat-generating member, first and second radiators disposed at upper and lower parts of the refrigerant tank, defined by a liquid refrigerant surface within the refrigerant tank, and a connection pipe connecting the first and second radiators. The first and second radiators have the same shape, and are disposed to cool and condense gas refrigerant from the boiling space. In the cooling device, even when the cooling device is used in a normal state or a vertically reversed state, sufficient radiating performance of the first and second radiators can be obtained.
摘要:
A cooling device boiling and condensing refrigerant includes a refrigerant tank having a boiling space in which a part of liquid refrigerant is boiled and vaporized to gas refrigerant by absorbing heat from a heat-generating member, and a radiator having a header through which gas refrigerant from the boiling space flows into plural tubes connected to the header. One end of the header is inserted into the refrigerant tank, and the inserted end portion of the header has a communication port communicating with the boiling space through a gas refrigerant outlet. The communication port has a lower end at the same position as a lower end of the gas refrigerant outlet. Further, the tubes are inserted into the header to have opened ends within the header, and each lower end of the opened ends of the tubes is set at a position higher than the lower end of the communication port and the lower end of the gas refrigerant outlet. Thus, the cooling device prevents liquid refrigerant from flowing into the tubes from the opened ends in the header.
摘要:
A cooling apparatus for cooling a heating body such as a CPU by boiling and condensing refrigerant has a tank having a heating body mounting portion on which the CPU is mounted; a porous metallic sintered body arranged in the tank; and refrigerant contained in the tank. The tank has a pair of faced walls including a heat-receiving wall and a radiation wall. The porous metallic sintered body is arranged along the heat-receiving wall, and transports the refrigerant collected at the bottom of the tank to an adjacent portion of the heating body mounting portion by using a capillary action. Since the refrigerant is boiled at such a wide adjacent portion, a superheat degree of the heating body mounting portion can decrease. Furthermore, since the refrigerant collected at the bottom of the tank is transported to the adjacent portion by the capillary action, an area of the radiation wall soaked in the refrigerant becomes small. As a result, a condensation area for condensing the vapor refrigerant becomes large, and then the supercool degree of the radiation wall can decrease. In this way, a cooling capacity of the cooling apparatus can increase.
摘要:
In a cooling apparatus, a radiating part mounted on a refrigerant tank is made by stacking refrigerant tubes and fins alternately. A first header and a second header are provided at the ends of the refrigerant tubes. When the cooling apparatus is used in a vertical attitude, the first header is positioned above the liquid surface of refrigerant inside the refrigerant tank, and the second header is positioned below the liquid surface. Consequently, vapor refrigerant boiled by heat from a heat-emitting body attached to the refrigerant tank can flow through the first header into the refrigerant tubes, and liquid refrigerant liquefied in the refrigerant tubes can flow through the second header back to the refrigerant tank.
摘要:
An (n)th adsorber and (n+1)th adsorber among a plurality of adsorbers in an adsorption process are connected thermally in series, and adsorbent of the (n)th adsorber which is a previous stage is cooled by adsorption of refrigerant by adsorbent of the (n+1)th adsorber which is a subsequent stage. That is to say, adsorbent of a first-stage adsorber on the left-hand side which adsorbs vapor of refrigerant such as water which exits from an evaporator is strongly cooled by adsorption of vapor from refrigerant such as water which flows through a cooling pipe by adsorbent of a second-stage adsorber on the right-hand side, large adsorption capacity is imparted by a reduction in temperature, and as a result, the evaporator demonstrates large refrigeration capacity. Consequently, a compact adsorptive type refrigeration apparatus which demonstrates large refrigeration capacity while having a compact adsorber and using a comparatively small quantity of adsorbent is provided. The present invention can also be applied with respect to an adsorption process of a refrigeration system in which adsorbent circulates in an adsorber.
摘要:
In a cooling device, a condensation unit is constructed by stacking plural unit plates and two outer plates. The plural unit plates are superimposed in a plate-thickness direction between the outer plates, and three sheets of unit plates are also arranged in the planar direction. The radiating fins are provided such that the width of the base is substantially equal to the width of the unit plate, and are arranged in parallel on one of the outer plates in the same manner as the unit plate. According to this structure, the number of the unit plates arranged in parallel with the outer plates and the number of the radiating fins are increased or decreased, so that it is possible to easily change the size of a radiating unit in accordance with a necessary cooling capacity.
摘要:
In a cooling device, a condensation unit is constructed by stacking plural unit plates and two outer plates. The plural unit plates are superimposed in a plate-thickness direction between the outer plates, and three sheets of unit plates are also arranged in the planar direction. The radiating fins are provided such that the width of the base is substantially equal to the width of the unit plate, and are arranged in parallel on one of the outer plates in the same manner as the unit plate. According to this structure, the number of the unit plates arranged in parallel with the outer plates and the number of the radiating fins are increased or decreased, so that it is possible to easily change the size of a radiating unit in accordance with a necessary cooling capacity.
摘要:
In a cooling device boiling and condensing refrigerant, a heat conductor portion for thermally connecting a heat reception wall and a heat radiation wall defining a closed container is disposed in the closed container, a heat-generating member is attached on the heat reception wall, and a heat radiation fin for radiating heat generated from the heat-generating member to an outside is provided on the heat radiation wall. In the cooling device, both ends of the tube are connected to the closed container at different position of the heat radiation wall to communicate with the closed container, so that the heat radiation fin is enclosed by the heat radiation wall and the tube.