Abstract: A brazed plate heat exchanger (100; 200) comprises a number of heat exchanger plates (120a-120h; 201-204) provided with a pressed pattern of ridges (R) and grooves (G) adapted to keep the plates on a distance from one another by providing contact points between crossing ridges (R) and grooves (G) of neighbouring plates under formation of interplate flow channels for media to exchange heat, said interplate flow channels being in selective fluid communication with first, second, third and fourth large port openings (O1, O2, O3, O4; 210a, 210b, 210c, 210d) and first and second small port openings (SO1, SO2) for letting in fluids to exchange heat, characterized in that fluid passing between the first and second large port openings (O1, O2; 210a, 210b) exchanges heat with fluids passing between third and fourth port openings (O3, O4; 210c, 210d) over a first heat exchanging portion of each plate and fluid passing between the first and second small port openings (SO1, SO2) over a second portion of each plate.

Abstract: A plate heat exchanger without straight flow channels is provided, for exchanging heat between fluids. Said heat exchanger, comprises a start plate, an end plate and a number of heat exchanger plates provided with a pressed pattern of ridges and grooves with a pitch. The heat exchanger plates are kept at a distance from each other by contact between ridges and grooves of neighboring plates in contact points, when said plates are being stacked onto one another. Flow channels are thus formed between said plates, the contact points are positioned so that no straight lines are formed along the length of the heat exchanger plates.

Abstract: A brazed plate heat exchanger (100) for exchanging heat between at least two fluids comprises several elongate heat exchanger plates (110) provided with a pressed pattern comprising depressions and elevations adapted to keep the plates on a distance from one another by contact points between the elevations and depressions of neighboring plates under formation of interplate flow channels for media to exchange heat. At least four port openings are placed in corner regions of the elongate heat exchanger plates and have selective fluid communication with the interplate flow channels such that the fluids to exchange heat will flow between port openings parallel to long sides of the elongate heat exchanger plates. A circumferential seal sealing off the interplate flow channels from communication with the surroundings is provided, and the heat exchanger plates are joined by brazing.

Abstract: A heat exchanger comprises a number of identical heat exchanger plates stacked in a stack. Every other heat exchanger plate is turned 180 degrees in its plane relative to its neighboring plates, and each heat exchanger plate comprises at least four port openings and a herringbone pattern comprising pressed ridges and grooves. The ridges and grooves are adapted to keep the plates on a distance from one another under formation of flow channels, wherein areas around the port openings are arranged on different levels, such that selective flow from the port openings to the flow channels is achieved. Dents are arranged in the ridges and grooves in the vicinity of any of the port openings, the dents being arranged to increase the flow resistance to promote a more even flow distribution in the flow channel.

Abstract: A method for producing a brazed plate heat exchanger comprising a stack of heat exchanger plates provided with a pressed pattern adapted to provide contact points between neighboring heat exchanger plates, such that the heat exchanger plates are kept on a distance from one another under formation of interplate flow channels for media to exchange heat, wherein the interplate flow channels are in selective communication with port openings for the media to exchange heat and circumferentially sealed along an outer periphery in order to avoid external leakage, comprises the following method steps: a. Calculating the position of the contact points between neighboring plates; b. Calculating a force that must be transferred by each contact point when the heat exchanger is in use; c. Based on the method steps above, calculating a necessary amount of brazing material for each contact point; d.

Abstract: A plate heat exchanger without straight flow channels is provided, for exchanging heat between fluids. Said heat exchanger, comprises a start plate, an end plate and a number of heat exchanger plates provided with a pressed pattern of ridges and grooves with a pitch. The heat exchanger plates are kept at a distance from each other by contact between ridges and grooves of neighboring plates in contact points, when said plates are being stacked onto one another. Flow channels are thus formed between said plates, the contact points are positioned so that no straight lines are formed along the length of the heat exchanger plates.

Abstract: A brazed plate heat exchanger (100; 200) comprises a number of heat exchanger plates (120a-120h; 201-204) provided with a pressed pattern of ridges (R) and grooves (G) adapted to keep the plates on a distance from one another by providing contact points between crossing ridges (R) and grooves (G) of neighbouring plates under formation of interplate flow channels for media to exchange heat, said interplate flow channels being in selective fluid communication with first, second, third and fourth large port openings (O1, O2, O3, O4; 210a, 210b, 210c, 210d) and first and second small port openings (SO1, SO2) for letting in fluids to exchange heat, characterized in that fluid passing between the first and second large port openings (O1, O2; 210a, 210b) exchanges heat with fluids passing between third and fourth port openings (O3, O4; 210c, 210d) over a first heat exchanging portion of each plate and fluid passing between the first and second small port openings (SO1, SO2) over a second portion of each plate.

Abstract: A brazed plate heat exchanger comprises a number of heat exchanger plates (100) provided with a pressed pattern comprising ridges (R) and grooves (G). The ridges and grooves of neighboring plates contact one another in order to keep the plates on a distance from one another under formation of interplate flow channels for media to exchange heat when the heat exchanger plates are placed in a stack to form the heat exchanger. Means (120a, 120b) are provided for allowing temperature measurement of a fluid present in a second flow channel counted from an end of the stack of heat exchanger plates (100).

Abstract: A plate heat exchanger (100) comprises a number of plates (110) provided with a pressed pattern of ridges (R) and grooves (G) arranged to keep the plates (110) on a distance from one another under formation of interplate flow channels for media to exchange heat. The interplate flow channels communicate with port openings (A, B, C, 140) being in selective communication with said interplate flow channels, one of the port openings (140) providing for connection to a downstream side of an expansion valve (EXP) such that coolant from the expansion valve (EXP) may enter the interplate flow channels communicating with the one port opening (140). A heat exchanging means (160, 165, 150, 155; HEP, LC, DP) is provided inside the one port opening (140), said heat exchanging means (160, 165, 150, 155; HEP, LC, DP) being arranged for exchanging heat between coolant downstream the expansion valve (EXP) and coolant about to enter the expansion valve (EXP).

Abstract: An evaporator for an absorption heat pump or a single coolant cooling process comprises a number of stacked plates provided with a pressed pattern to hold the plates on a distance from one another to form a heat exchanging strip, vapor leading spaces and outer walls, the heat exchanging strip being designed such that flow channels are formed by internal surfaces of the strip, said flow channels connecting a heat carrier inlet and a heat carrier outlet, wherein a coolant forms a falling film on external surfaces of the heat carrier channels by being provided above the heat carrier channels by a coolant inlet, wherein coolant being vaporized from the external surfaces by heat from a heat carrier flowing from the inlet to the outlet rapidly enters the vapor leading spaces. The vapor leading spaces are provided between the heat exchanging strip and the outer walls.

Abstract: A combined evaporator and condenser (1100) is manufactured from a number of stacked heat exchanger plates (980) provided with a pressed pattern of ridges and grooves for keeping the plates on a distance from one another for creating interplate flow channels (1180, 1200). The evaporator portion (1120, 1150) of the combined evaporator and condenser (1100) has a coolant outlet connectable to an expansion valve (R), and a connection between the condenser portion and the expansion valve (R) runs through the evaporator portion.

Abstract: An evaporator for an absorption heat pump or a single coolant cooling process comprises a number of stacked plates provided with a pressed pattern to hold the plates on a distance from one another to form a heat exchanging strip, vapor leading spaces and outer walls, the heat exchanging strip being designed such that flow channels are formed by internal surfaces of the strip, said flow channels connecting a heat carrier inlet and a heat carrier outlet, wherein a coolant forms a falling film on external surfaces of the heat carrier channels by being provided above the heat carrier channels by a coolant inlet, wherein coolant being vaporized from the external surfaces by heat from a heat carrier flowing from the inlet to the outlet rapidly enters the vapor leading spaces. The vapor leading spaces are provided between the heat exchanging strip and the outer walls.

Abstract: A plate heat exchanger without straight flow channels is provided, for exchanging heat between fluids. Said heat exchanger, comprises a start plate, an end plate and a number of heat exchanger plates provided with a pressed pattern of ridges and grooves with a pitch. The heat exchanger plates are kept at a distance from each other by contact between ridges and grooves of neighboring plates in contact points, when said plates are being stacked onto one another. Flow channels are thus formed between said plates, the contact points are positioned so that no straight lines are formed along the length of the heat exchanger plates.

Abstract: A heat exchanger comprises a number of identical heat exchanger plates stacked in a stack. Every other heat exchanger plate is turned 180 degrees in its plane relative to its neighboring plates, and each heat exchanger plate comprises at least four port openings and a herringbone pattern comprising pressed ridges and grooves. The ridges and grooves are adapted to keep the plates on a distance from one another under formation of flow channels, wherein areas around the port openings are arranged on different levels, such that selective flow from the port openings to the flow channels is achieved. Dents are arranged in the ridges and grooves in the vicinity of any of the port openings, said dents being arranged to increase the flow resistance to promote a more even flow distribution in said flow channel.

Abstract: A brazed heat exchanger comprises a number of heat exchanger plates (100, 200, 300) provided with a pressed pattern of ridges (110a) and grooves (110b) arranged such that flow channels for media to exchange heat are formed between neighboring plates (100,200,300). The plates (100,200,300) are further provided with port openings (120a-d) in selective communication with said flow channels and with a circumferential edge formed by skirts (130;240; 335) of neighboring plates (100,200,300) overlapping one another. A reinforcement portion (140; 250;340) extends outside the skirt (130;240; 335), and comprises a ribbon of sheet metal.

Abstract: A brazed heat exchanger (100,200) for exchanging heat between fluids comprises a number of heat exchanging plates (110,210) provided with a pressed pattern of ridges (120,220) and grooves (130,230). The heat exchanger plates (110,210) are stacked onto one another such that flow channels (211,212) are formed between said plates (110,210), and the flow channels (211,212) are in selective communication with port openings (140,240). Port skirts (170,250,260) are arranged on the heat exchanging plates (110,210), said port skirts (170, 250, 260) at least partly surrounding the port openings (140,240), extending in a generally perpendicular direction as compared to a plane of the heat exchanger plates (110,210) and being arranged to overlap one another to form a pipe like configuration or a part thereof.

Abstract: A combined evaporator and condenser (1100) is manufactured from a number of stacked heat exchanger plates (980) provided with a pressed pattern of ridges and grooves for keeping the plates on a distance from one another for creating interplate flow channels (1180, 1200).

Abstract: A plate heat exchanger (100) comprises a number of plates (110) provided with a pressed pattern of ridges (R) and grooves (G) arranged to keep the plates (110) on a distance from one another under formation of interplate flow channels for media to exchange heat. The interplate flow channels communicate with port openings (A, B, C, 140) being in selective communication with said interplate flow channels, one of the port openings (140) providing for connection to a downstream side of an expansion valve (EXP) such that coolant from the expansion valve (EXP) may enter the interplate flow channels communicating with the one port opening (140). A heat exchanging means (160, 165, 150, 155; HEP, LC, DP) is provided inside the one port opening (140), said heat exchanging means (160, 165, 150, 155; HEP, LC, DP) being arranged for exchanging heat between coolant downstream the expansion valve (EXP) and coolant about to enter the expansion valve (EXP).

Abstract: A brazed heat exchanger (100, 200) comprises a number of heat exchanger plates (110, 120, 130, 140, 150) provided with a pressed pattern of ridges and grooves to form flow channels for media to exchange heat between neighboring heat exchanger plates (110,120,130,140,150). The flow channels are in selective fluid communication with port openings (160). The port openings (160) are provided with dented surfaces (180; 280) being arranged along an interior circumference of the port openings (160) and comprising ridges (181; 282) and grooves (182; 281), said ridges (181; 282) and grooves (182; 281) being arranged such that a ridge (181; 282) of one heat exchanger plate (110, 120, 130, 140, 150) contacts a groove (182; 281) of a neighboring plate (110,120,130,140,150) to form a honeycomb pattern.

Abstract: An end plate (200, 300) for a brazed heat exchanger comprises a relief pattern comprising ridges (230, 330) and grooves (240, 340) pressed into the plate material. The relief pattern (330, 340) is symmetric.