Patent application number | Description | Published |
20080223566 | HEAT EXCHANGER - A heat exchanger used as an evaporator is configured such that two heat exchange tube groups, each composed of a plurality of heat exchange tubes, are provided between a pair of header tanks, while being separated from each other in a front-rear direction. Each of the header tanks includes two header sections. Each header tank includes a first member to which the heat exchange tubes are connected, a second member which is joined to the first member and covers the side of the first member opposite the heat exchange tubes, and a partition plate disposed between the first and second members and having partition portions which divide the interiors of the two header sections into respective upper and lower spaces. Through holes are formed in the partition portions so as to establish communication between the upper and lower spaces of the header sections. | 09-18-2008 |
20080229771 | Heat Exchanger - A heat exchanger | 09-25-2008 |
20080296003 | Heat exchanger - A heat exchanger used as an evaporator includes a refrigerant inlet header section having a refrigerant inlet at a right end portion, and a plurality of heat exchange tubes connected to the refrigerant inlet header section. The interior of the refrigerant inlet header section is divided by a partition plate into an upper space into which refrigerant flows via the refrigerant inlet and a lower space into which the heat exchange tubes project. A communication opening is formed in the partition plate on the left side of a heat exchange tube at the left end so as to establish communication between the upper and lower spaces. A guide portion is formed at a left edge portion of the communication opening such that the guide portion projects from a lower surface of the partition member into the lower space so as to guide the refrigerant toward the right end side. | 12-04-2008 |
20080302131 | Evaporator - An evaporator includes a plurality of flat heat exchange tubes arranged in a left-right direction at a spacing with the widthwise direction thereof pointing forward or rearward, and fins arranged between respective adjacent pairs of heat exchange tubes. The fins have at least front edges thereof projected forwardly outward beyond the heat exchange tubes. Assuming that the amount of projection of the fins beyond the heat exchange tubes is X mm and that the heat exchange tubes are Y mm in thickness in the left-right direction, i.e., in height, X and Y have the relationship of 0.11Y≦X≦1.0Y. The surfaces of the fins can be drained of condensation water efficiently. | 12-11-2008 |
20080314076 | Heat Exchanger - An evaporator includes a pair of header tanks arranged one above the other at a spacing, a plurality of heat exchange tubes arranged in parallel between the pair of header tanks and having opposite ends joined to the respective header tanks, and fins arranged between respective left-to-right adjacent pairs of heat exchange tubes. The lower header tank includes a tank forming member and a tube connecting plate joined to the tank forming member. The tube connecting plate has a plurality of drain guides arranged at a spacing in a left-right direction. The drain guides each include a cutout portion formed in an upper surface cover portion of the tube connecting plate for covering the upper surface of the tank forming member to a side cover portion of the plate for covering a side face of the member. The amount of condensation water to be collected on the top surface of the lower tank can be diminished. | 12-25-2008 |
20090007592 | HEAT EXCHANGER - A heat exchanger | 01-08-2009 |
20090166019 | Double-wall-tube heat exchanger - A double-wall-tube heat exchanger has an outer tube, and an inner tube disposed concentrically in and spaced apart from the outer tube. A clearance between the outer tube and the inner tube and the interior of the inner tube serve as respective refrigerant flow paths. The inner tube has a plurality of interior fins formed on its inner circumferential surface. The interior fins project radially inward; extend in a longitudinal direction of the inner tube; and are arranged at circumferential intervals. The inner tube has a plurality of elongated projections formed on its outer circumferential surface. The elongated projections project radially outward; extend in the longitudinal direction; and are arranged at circumferential intervals. The interior fins are greater in height than the elongated projections. The double-wall-tube heat exchanger exhibits excellent heat exchange performance. | 07-02-2009 |
20090236086 | HEAT EXCHANGER - An evaporator | 09-24-2009 |
20090282850 | EVAPORATOR - An evaporator includes plural refrigerant flow members and corrugate fins disposed in corresponding air-passing clearances between the adjacent refrigerant flow members. Each refrigerant flow member includes plural flat tubes arranged in the front-rear direction. Each corrugate fin extends across all the flat tubes. A vertically extending drain portion is formed between the flat tubes adjacent each other in the front-rear direction. At each connection portion of the corrugate fin, a louver group including plural louvers inclining downward toward the front is provided to correspond to a front portion of each flat tube. At least the front-end louver of the louver group provided to correspond to the front portion of each flat tube except for the flat tube at the front end is located in the drain portion. This evaporator exhibits excellent drainage of condensed water and enables high work efficiency in manufacture thereof. | 11-19-2009 |
20100031698 | Heat exchanger - An evaporator includes two header tanks and a plurality of heat exchange tubes disposed therebetween. The interior of a refrigerant inlet header section of the first header tank is divided into two spaces by a first flow diverging plate. The heat-exchange-tube-side space of the refrigerant inlet header section is divided into a plurality of sections by a first partition plate. Flow diverging openings are provided in portions of the first flow diverging plate facing the sections. The interiors of first and second intermediate header sections of the second header tank are each divided into sections, equal in number to those of the refrigerant inlet header section. The heat exchange tubes communicating with the sections of the refrigerant inlet header section communicate with the sections of the first intermediate header section, and the sections of the first intermediate header section communicate with the corresponding sections of the second intermediate header section. | 02-11-2010 |
20100077794 | Evaporator - An evaporator includes a refrigerant inlet header section, a refrigerant outlet header section, and a refrigerant circulation path connecting the two header sections. A refrigerant inlet-outlet member composed of a first plate, a second plate, and an intermediate plate is joined to the two header sections. The refrigerant inlet-outlet member has an inflow channel whose one end communicates with the refrigerant inlet of the refrigerant inlet header section and whose other end is opened to a rear edge of the refrigerant inlet-outlet member, and an outflow channel whose one end communicates with the refrigerant outlet of the refrigerant outlet header section and whose other end is opened to the rear edge. The first and second plates each have inflow-channel-forming and outflow-channel-forming outward swelled portions. Cutouts and a through hole are formed in the intermediate plate such that the inflow channel and the outflow channel cross each other. | 04-01-2010 |
20100083694 | Evaporator - Each heat exchange tube of an evaporator is composed of two press-worked rectangular metal plates joined together in a stacked condition. The metal plates of the heat exchange tube are swelled outward whereby at least one refrigerant flow space extending in the vertical direction and having opened upper and lower ends is provided in the heat exchange tube. Insertion portions to be inserted into header sections of header tanks of the evaporator via tube insertion holes are provided on upper and lower end portions of each heat exchange tube at positions corresponding to the refrigerant flow space. A concave portion is formed in each of the insertion portions, excluding opposite ends thereof with respect to the front-rear direction, of the upper and lower end portions of each heat exchange tube, the concave portion being concaved inward with respect to a longitudinal direction of the heat exchange tube. | 04-08-2010 |
20100223949 | Evaporator with cool storage function - An evaporator with a cool storage function includes flat refrigerant flow tubes and flat cool storage material containers each brazed to one side surface of the corresponding refrigerant flow tube. A plurality of sets each composed of refrigerant flow tubes and a cool storage material container are disposed such that they are spaced from one another. A fin is disposed in an air-passing clearance between adjacent sets, and is joined to the corresponding refrigerant flow tubes and the corresponding cool storage material container. Front portions of the cool storage material containers and the fins project frontward from the refrigerant flow tubes, and an internal-volume-increasing portion, whose container height is greater than that of the container body portion, is provided at the frontward projecting portion of each cool storage material container. Fins are brazed to opposite side surfaces of the internal-volume-increasing portion of each cool storage material container. | 09-09-2010 |
20100326640 | Double-wall-tube heat exchanger - A double-wall-tube heat exchanger has outer and inner tubes. A clearance between the outer and inner tubes and the interior of the inner tube serve as refrigerant flow paths. Opposite end portions of the inner tube project from opposite ends of the outer tube. The outer tube includes expanded portions formed near the opposite ends. Contracted portions are formed on the outer tube to be located on the outer sides of the expanded portions, and are brazed to the inner tube. Longitudinally extending ridges project radially inward from the inner circumferential surface of the outer tube at predetermined circumferential intervals. The ridges on the inner circumferential surfaces of the expanded portions and the contracted portions are crushed. The clearances between the inner tube and portions of the contracted portions of the outer tube where the ridges are not formed are filled with a brazing filler metal. | 12-30-2010 |
20110154855 | Evaporator with cool storage function - An evaporator with a cool storage function includes a plurality of flat refrigerant flow tubes spaced apart from one another, and a plurality of flat cool storage material containers each of which contains a cool storage material and is disposed on one side of the corresponding refrigerant flow tube, and is brazed to the corresponding refrigerant flow tube. The cool storage material container includes a container body brazed to the corresponding refrigerant flow tube, and an internal-volume-increasing portion which extends downstream from the container body, which projects downstream from the refrigerant flow tube, and which is greater in dimension in a thickness direction than the container body. An inner fin extending from the container body to the internal-volume-increasing portion is disposed in the cool storage material container. This evaporator is suitable for a refrigeration cycle which constitutes a car air conditioner. | 06-30-2011 |
20110303401 | Evaporator - A leeward tube row of an evaporator includes first to third tube groups, and a windward tube row thereof includes fourth and fifth tube groups. Within a third section of a leeward upper header portion with which heat exchange tubes of the third tube group communicate, a resistance member for flow division is provided so as to divide the interior of the third section into a first space which the heat exchange tubes face, and a second space which is separated from the first space and into which refrigerant flows. The resistance member for flow division has a plurality of refrigerant passage holes. The leeward upper header portion has a flow cutoff member for preventing flow of refrigerant into the first space of the third section. The third section of the leeward upper header portion communicates with the fourth section of the windward upper header portion via refrigerant communication passages. | 12-15-2011 |
20120042687 | EVAPORATOR WITH COOL STORAGE FUNCTION - An evaporator with a cool storage function includes a cool storage material container disposed at least one of air-passing clearances formed between adjacent refrigerant flow tubes, and fins disposed in air-passing clearances on opposite sides of the cool storage material container. The cool storage material container includes a container body portion joined to the corresponding refrigerant flow tubes, and an outward extending portion which extends from the front edge of the container body portion and projects frontward in relation to the refrigerant flow tubes. Each of the fins has a fin body portion joined to the corresponding refrigerant flow tubes, and an outward extending portion which extends from the front edge of the fin body portion body and projects frontward in relation to the refrigerant flow tubes. The outward extending portions of the fins are brazed to opposite sides of the outward extending portion of the cool storage material container. | 02-23-2012 |
20120096894 | EVAPORATOR - A leeward upper header portion of an evaporator includes first through third sections which communicate with upper ends of heat exchange tubes of first through third tube groups of a leeward tube row. The second tube group, which is an upward flow tube group, and the third tube group, which is a downward flow tube group, form a tube group set. A baffle plate is provided in the second section to be located on the side toward the third section. The baffle plate divides a portion of the interior of the second section into upper and lower spaces and prevents flow of refrigerant toward the upper space. A flow prevention member is provided below the baffle plate so as to prevent flow of refrigerant from the second section into the third section. These two sections communicate with each other in a region above the baffle plate. | 04-26-2012 |
20120198882 | EVAPORATOR - An evaporator includes a pair of header tanks spaced from each other in a vertical direction; a plurality of flat heat exchange tubes | 08-09-2012 |
20130067946 | COOLING UNIT OF AIR CONDITIONING APPARATUS FOR VEHICLE - A cooling unit includes an evaporator with a cool storage function, and a drain case disposed below the evaporator. Cool storage material containers and outer fins of the evaporator have respective outward projecting portions which project from the refrigerant flow tubes toward the leeward side. The drain case includes a condensed water drain portion which drains condensed water generated on the evaporator from at least one of the lower end of the outward projecting portion of each cool storage material container and the lower end of the outward projecting portion of each outer fin. The cooling unit is preferably used in a refrigeration cycle which constitutes an air conditioning apparatus for a vehicle in which an engine serving as a drive source for a compressor is temporarily stopped when the vehicle is stopped. | 03-21-2013 |
20130086938 | THERMAL STORAGE MATERIAL CONTAINER AND HEAT EXCHANGER - A cool storage material container is formed by brazing together peripheral edge portions of two aluminum plates. A cool storage material for storing cool is charged into a cool storage material accommodation space. The cool storage material container has a seal portion provided by closing a thermal storage material charging inlet which is formed at the peripheral edge portions of the two aluminum plates and is used to charge the cool storage material into the cool storage material accommodation space. The seal portion includes two outward protrusions which are formed by pressing and collapsing the thermal storage material charging inlet such that they project outward from the two aluminum plates and are brought into close contact with each other. The outward protrusions are bonded together by an anaerobic adhesive and are bent in the thickness direction of the aluminum plates such that their bent portions have a V-shaped cross section. | 04-11-2013 |
20130212881 | METHOD OF MANUFACTURING EVAPORATOR WITH COOL STORAGE FUNCTION - In a method of manufacturing an evaporator with a cool storage function, a plurality of flat refrigerant flow tubes and a plurality of container forming assemblies are disposed such that a width direction of each of the plurality of flat refrigerant flow tubes and a width direction of each of the plurality of container forming assemblies coincide with a vertical direction. Peripheral edge portions of container forming plates are brazed together to prepare each of the cool storage material containers. The flat refrigerant flow tubes and the cool storage material containers are brazed together. | 08-22-2013 |
20130319642 | CENTRIFUGAL BLOWER WITH COOLING FUNCTION - A centrifugal blower with a cooling function includes an impeller, a scroll casing, and an evaporator. The impeller includes a plurality of blades provided around a rotary shaft and blows out in a radially outward direction air taken in along the axial direction of the rotary shaft. The scroll casing accommodates the impeller, and has an intake port, a spiral air passage, and a discharge port. The evaporator is disposed in the air passage of the scroll casing. The evaporator includes a plurality of refrigerant passage members which are stacked in the longitudinal direction of the rotary shaft of the impeller and each of which has a refrigerant flow channel. An air-passing clearance is provided between adjacent refrigerant passage members. The centrifugal blower with a cooling function is used for a vehicle air conditioner. | 12-05-2013 |
20140165647 | EVAPORATOR WITH COOL STORAGE FUNCTION - An evaporator includes a cool storage material container. The cool storage material container contains a cool storage material and is disposed in a second part of the spaces. The cool storage material container includes a container main body portion joined to the refrigerant flow tubes. The outward projecting portion extends from an upper end of the leeward edge or windward edge of the container main body portion. The outward projecting portion has an expansion portion projecting from the container main body portion and projecting thickness of the expansion portion is greater than a thickness of the container main body portion. The expansion portion is located outward of the fins. At least one of left and right side walls of the expansion portion is so constructed to deform when an internal pressure in the cool storage material container increases beyond a predetermined pressure. | 06-19-2014 |