Abstract: The present invention is a cooling plate including a groove, which becomes a passage of a coolant, inside a body, wherein one or more fins are provided inside the groove, wherein the groove is covered with a lid having width larger than the groove, wherein the lid is joined to the body by friction stir welding, and wherein a weld bead formed by: the joining is outside the passage, and the weld bead formed by the joining is formed within the body and further, is characterized by a manufacturing method of a cooling plate that has a first groove, which becomes a passage of a coolant, and a second groove, which has width larger than the first groove and receives a lid on the first groove, inside a body, receives the lid on the second groove, and is joined to the body, the manufacturing method of a cooling plate wherein, while the lid and the body are joined together by the friction stir welding owing to insertion of a-rotation tool having a shoulder and a pin, the joining is performed so that a weld bead formed b

Abstract: The present invention is a cooling plate including a groove, which becomes a passage of a coolant, inside a body, wherein one or more fins are provided inside the groove, wherein the groove is covered with a lid having width larger than the groove, wherein the lid is joined to the body by friction stir welding, and wherein a weld bead formed by: the joining is outside the passage, and the weld bead formed by the joining is formed within the body and further, is characterized by a manufacturing method of a cooling plate that has a first groove, which becomes a passage of a coolant, and a second groove, which has width larger than the first groove and receives a lid on the first groove, inside a body, receives the lid on the second groove, and is joined to the body, the manufacturing method of a cooling plate wherein, while the lid and the body are joined together by the friction stir welding owing to insertion of a-rotation tool having a shoulder and a pin, the joining is performed so that a weld bead formed b

Abstract: The present invention is a cooling plate including a groove, which becomes a passage of a coolant, inside a body, wherein one or more fins are provided inside the groove, wherein the groove is covered with a lid having width larger than the groove, wherein the lid is joined to the body by friction stir welding, and wherein a weld bead formed by: the joining is outside the passage, and the weld bead formed by the joining is formed within the body and further, is characterized by a manufacturing method of a cooling plate that has a first groove, which becomes a passage of a coolant, and a second groove, which has width larger than the first groove and receives a lid on the first groove, inside a body, receives the lid on the second groove, and is joined to the body, the manufacturing method of a cooling plate wherein, while the lid and the body are joined together by the friction stir welding owing to insertion of a-rotation tool having a shoulder and a pin, the joining is performed so that a weld bead formed b

Abstract: The present invention is a cooling plate including a groove, which becomes a passage of a coolant, inside a body, wherein one or more fins are provided inside the groove, wherein the groove is covered with a lid having width larger than the groove, wherein the lid is joined to the body by friction stir welding, and wherein a weld bead formed by the joining is outside the passage, and the weld bead formed by the joining is formed within the body and further, is characterized by a manufacturing method of a cooling plate that has a first groove, which becomes a passage of a coolant, and a second groove, which has width larger than the first groove and receives a lid on the first groove, inside a body, receives the lid on the second groove, and is joined to the body, the manufacturing method of a cooling plate wherein, while the lid and the body are joined together by the friction stir welding owing to insertion of a rotation tool having a shoulder and a pin, the joining is performed so that a weld bead formed by

Abstract: The present invention is a cooling plate including a groove, which becomes a passage of a coolant, inside a body, wherein one or more fins are provided inside the groove, wherein the groove is covered with a lid having width larger than the groove, wherein the lid is joined to the body by friction stir welding, and wherein a weld bead formed by the joining is outside the passage, and the weld bead formed by the joining is formed within the body and further, is characterized by a manufacturing method of a cooling plate that has a first groove, which becomes a passage of a coolant, and a second groove, which has width larger than the first groove and receives a lid on the first groove, inside a body, receives the lid on the second groove, and is joined to the body, the manufacturing method of a cooling plate wherein, while the lid and the body are joined together by the friction stir welding owing to insertion of a rotation tool having a shoulder and a pin, the joining is performed so that a weld bead formed by

Abstract: In a rectifying apparatus of vapor/liquid contact type, the rectifier 5 is disposed above a regenerator 4 and has two stages, a lower recovery stage and an upper condensation stage. The two stages are filled with filler elements 7a, 7b and 7c, 7d, respectively. Each filler elements 7a and 7c has a conical bottom for biasing the falling liquid towards its center and the rising refrigerant vapor towards its outer edge. The rising speed of the refrigerant vapor is made more uniform and the falling liquid has less tendency to drip down along the side wall. As the contact between the vapor and the liquid is increased, the efficiency of rectification is enhanced.

Abstract: An absorption refrigerating/heating apparatus in which a refrigerant vapor generated in the evaporator (1) is absorbed to produce absorption heat by the absorbent in an absorber (2). There are first tube for chilled water in the evaporator, a second tube for cooling water in the absorber, a third tube in an indoor unit (15), and a forth tube in a sensible heat exchanger. The first tube and the second tube are respectively connected to the third tube and the fourth tube in a cooling operation, while to the fourth tube and the third tube respectively in a heating operation.

Abstract: Pipings for joining pumps for delivering absorbent solution and refrigerant with an absorber and an evaporator are eliminated for minimizing the dimensions of the absorber or the evaporator, preventing leakage under pressure, and reducing heat loss and cavitation. Two pumps P2 and P3 for circulating and delivering the absorbent solution in a lower tank 21 are mounted in side-by-side relationship in a recess of a base 23 of the lower tank 21. The base 23 has a space therein for accommodating an impeller 36. The space forms a part of pump chamber communicated to a flow passage 37.

Abstract: In an asynchronous transfer mode (ATM) switching system, an N-byte ATM cell containing a header and user data is received from a line circuit and an N-bit header containing routing information is derived from the received header. The received ATM cell is converted into a sequence of N parallel data bits and supplied to a first-stage controller to generate a first switching control signal. A successive bit of the N-bit header of the ATM cell is switched through a first-stage header-transfer switch in response to the first switching control signal and successive N parallel data bits of the cell are switched through a first-stage cell-transfer switch in response to the same control signal in synchronism with the first-stage header-transfer switch. A second-stage controller is responsive to the N-bit header switched from the first-stage header-transfer switch for generating a second switching control signal.

Abstract: A method for producing a strip of material having a non-uniform cross section is carried out by passing a strip of material in the longitudinal direction through a first set of working rolls, at least one of which is provided with an annular slot intermediate the ends thereof so that a reducing force is applied only to those portions of the strip engaging said roll on opposite sides of the slot whereby the excess material flows toward that portion of the strip opposed to the slot to cause the strip to buckle outwardly into the slot. The strip is subsequently passed through a set of smooth rolls to flatten the buckled portion. This procedure is repeated any desired number of times with the width of the slot becoming progressively smaller. The strip may then be passed through one or more sets of finishing rolls and a heating and annealing operation can take place before each passage through a set of finishing rolls.