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1. 发明授权

US11867469B2 Heat exchanger 有权
公开(公告)号：US11867469B2
公开(公告)日：2024-01-09
申请号：US16770057
申请日：2018-12-04
申请人： SWEP International AB
发明人： Tomas Dahlberg , Sven Andersson
IPC分类号： F28D9/00 , F28F3/04 , F28F3/10
CPC分类号： F28D9/005 , F28F3/046 , F28F3/10 , F28F2230/00 , F28F2275/04
摘要： 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. The circumferential seal results partly from contact between skirts of neighboring plates contacting one another, said skirts extending at least partly along two sides of each heat exchanger plates, and partly from contact between flat areas extending along two other sides of the heat exchanger plates.

2. 发明授权

US11491588B2 Brazing material 有权
公开(公告)号：US11491588B2
公开(公告)日：2022-11-08
申请号：US16470118
申请日：2017-12-11
申请人： SWEP INTERNATIONAL AB
发明人： Tomas Dahlberg , Niclas Bornegård
IPC分类号： B23K35/30 , B23K35/02 , C22C38/58 , C22C38/54 , C22C38/44 , C22C38/34 , B23K101/14
摘要： A brazing material for brazing a brazed plate heat exchanger comprising a number of heat exchanger plates being provided with a pressed pattern of ridges and grooves adapted to provide contact points between neighbouring heat exchanger plates, such that the heat exchanger plates are kept on a distance from one another and such that interplate flow channels for media to exchange heat are formed between the heat exchanger plates comprises a brazing alloy comprising at least one melting point depressing element and metals resembling the composition of the heat exchanger plates. The brazing material comprises a mixture between grains of a melting brazing material having solidus and liquidus temperatures lower than a brazing temperature and a non-melting brazing material having solidus and liquidus temperatures above the brazing temperature. The ratio between the melting and non-melting brazing materials is such that an alloy formed by the melting and non-melting brazing materials has a solidus temperature lower than the brazing temperature and a liquidus temperature higher than the brazing temperature.

3. 发明授权

US11480367B2 Refrigeration system 有权
公开(公告)号：US11480367B2
公开(公告)日：2022-10-25
申请号：US16615717
申请日：2018-05-22
申请人： SWEP International AB
发明人： Tomas Dahlberg , Sven Andersson
IPC分类号： F25B13/00 , F25B40/00 , F25B25/00 , F25B49/02 , F28D9/00
摘要： A reversible refrigeration system including a compressor arranged to compress gaseous refrigerant, a four-way valve switchable between a heating position in which a payload is heated and a cooling position in which the payload is cooled. A payload heat exchanger is connected to the payload requiring heating or cooling, and a dump heat exchanger, two one-way valves, and two controllable expansion valves as well, wherein the one-way valves each are connected parallel to a corresponding expansion valve, wherein switching of the four-way valve between the heating position and the cooling position controls a flow of pressurized refrigerant to either of the payload heat exchanger or the dump heat exchanger and wherein the heat exchanger which receives the flow of pressurized refrigerant functions as a condenser and the other heat exchanger functions as an evaporator.

4. 发明授权

US10378799B2 Port opening with supercooling 有权
公开(公告)号：US10378799B2
公开(公告)日：2019-08-13
申请号：US14764515
申请日：2014-02-14
申请人： SWEP INTERNATIONAL AB
发明人： Sven Andersson , Tomas Dahlberg
IPC分类号： F25B39/02 , F25B39/04 , F28F27/02 , F28D9/00 , F25B40/00 , F28F9/02
摘要： 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).

5. 发明授权

US11878373B2 Brazing material 有权
公开(公告)号：US11878373B2
公开(公告)日：2024-01-23
申请号：US17933961
申请日：2022-09-21
申请人： SWEP INTERNATIONAL AB
发明人： Tomas Dahlberg , Niclas Bornegård
IPC分类号： B23K35/30 , B23K35/02 , C22C38/34 , C22C38/44 , C22C38/54 , C22C38/58 , B23K101/14
CPC分类号： B23K35/3086 , B23K35/025 , C22C38/34 , C22C38/44 , C22C38/54 , C22C38/58 , B23K2101/14
摘要： A brazing material for brazing a brazed plate heat exchanger comprising a number of heat exchanger plates being provided with a pressed pattern of ridges and grooves adapted to provide contact points between neighbouring heat exchanger plates, such that the heat exchanger plates are kept on a distance from one another and such that interplate flow channels for media to exchange heat are formed between the heat exchanger plates comprises a brazing alloy comprising at least one melting point depressing element and metals resembling the composition of the heat exchanger plates. The brazing material comprises a mixture between grains of a melting brazing material having solidus and liquidus temperatures lower than a brazing temperature and a non-melting brazing material having solidus and liquidus temperatures above the brazing temperature. The ratio between the melting and non-melting brazing materials is such that an alloy formed by the melting and non-melting brazing materials has a solidus temperature lower than the brazing temperature and a liquidus temperature higher than the brazing temperature.

6. 发明授权

US11841195B2 Means for sensing temperature 有权
公开(公告)号：US11841195B2
公开(公告)日：2023-12-12
申请号：US16470130
申请日：2017-12-11
申请人： SWEP INTERNATIONAL AB
发明人： Tomas Dahlberg , Sven Andersson
IPC分类号： F28F27/00 , F28D9/00 , F28F3/04 , G01K13/02
CPC分类号： F28F27/00 , F28D9/005 , F28F3/046 , G01K13/02
摘要： 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).

7. 发明授权

US11300366B2 Heat exchanger having an integrated suction gas heat exchanger 有权
公开(公告)号：US11300366B2
公开(公告)日：2022-04-12
申请号：US16615707
申请日：2018-05-22
申请人： SWEP International AB
发明人： Tomas Dahlberg , Sven Andersson
IPC分类号： F28F3/00 , F28F3/04 , F28F9/02
摘要： 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.

8. 发明授权

US10352597B2 Evaporation and absorption unit 有权
公开(公告)号：US10352597B2
公开(公告)日：2019-07-16
申请号：US15106408
申请日：2014-12-19
申请人： SWEP International AB
发明人： Sven Andersson , Tomas Dahlberg , Paris Chatzitakis , Belal Dawoud , Jan Hertwig , Peter Kleem , Ulrich Vedder
IPC分类号： B01D1/22 , F28D9/00 , F25B15/02 , F25B39/00 , F25B39/02 , F28D21/00
摘要： 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.

9. 发明授权

US10139141B2 Combined condensor and evaporator 有权
公开(公告)号：US10139141B2
公开(公告)日：2018-11-27
申请号：US14764510
申请日：2014-02-14
申请人： SWEP INTERNATIONAL AB
发明人： Sven Andersson , Tomas Dahlberg
IPC分类号： F25B39/02 , F25B39/04 , F28F27/02 , F28D9/00 , F25B40/00 , F28F9/02
摘要： 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.

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