Patents by Inventor Niclas BORNEGARD
Niclas BORNEGARD has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11878373Abstract: 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.Type: GrantFiled: September 21, 2022Date of Patent: January 23, 2024Assignee: SWEP International ABInventors: Tomas Dahlberg, Niclas Bornegård
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Publication number: 20230256530Abstract: A method for brazing a plate heat exchanger (10) having a stack of heat exchanger plates with depressions and elevations forming interplate flow channels and port openings being in selective fluid communication with said interplate flow channels, the method comprising the steps of placing the stack of heat exchanger plates in a heating chamber (16) of a furnace (15), conducting a gas for changing the temperature of the stack of heat exchanger plates through a plurality of nozzles (23) inside the heating chamber (16), and conducting gas from at least one of said nozzles (23) into at least one of the port openings (O1-O4) of the stack of heat exchanger plates. Disclosed is also a system for brazing a plate heat exchanger (10).Type: ApplicationFiled: July 2, 2021Publication date: August 17, 2023Applicant: SWEP International ABInventor: Niclas BORNEGÅRD
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Publication number: 20230131567Abstract: 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.Type: ApplicationFiled: September 21, 2022Publication date: April 27, 2023Applicant: SWEP INTERNATIONAL ABInventors: Tomas DAHLBERG, Niclas BORNEGÅRD
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Patent number: 11491588Abstract: 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.Type: GrantFiled: December 11, 2017Date of Patent: November 8, 2022Assignee: SWEP INTERNATIONAL ABInventors: Tomas Dahlberg, Niclas Bornegård
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Patent number: 11413714Abstract: 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.Type: GrantFiled: January 16, 2019Date of Patent: August 16, 2022Assignee: SWEP INTERNATIONAL ABInventors: Niclas Bornegard, Sven Andersson, Hans Andre
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Publication number: 20220184725Abstract: The present application relates to a stencil device (150) for simultaneous stencil printing of brazing material onto elevations, areas surrounding port openings, and a circumferential skirt (210) of a heat exchanger plate (200) wherein the stencil device (150) comprises an upper stencil having openings for applying brazing material to elevations and areas surrounding port openings of the heat exchanger plate (200) and a lower stencil printing stencil (150) having a large opening (190) for receiving the heat exchanger plate (200) and contacting an outer perimeter of the circumferential skirt (210) of the heat exchanger plate (200), wherein an inner surface (195) of the large opening (190) comprises brazing material exits (160) for applying brazing material to the circumferential skirts (195). Disclosed is also a method of such stencil printing and also the use of a stencil device for applying heat exchanger plates (200) with a brazing material.Type: ApplicationFiled: April 1, 2020Publication date: June 16, 2022Applicant: SWEP INTERNATIONAL ABInventors: Sven ANDERSSON, Tomas DAHLBERG, Niclas BORNEGÅRD
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Publication number: 20200338674Abstract: 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.Type: ApplicationFiled: January 16, 2019Publication date: October 29, 2020Applicant: SWEP International ABInventors: Niclas BORNEGARD, Sven ANDERSSON, Hans ANDRE
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Publication number: 20190375055Abstract: 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.Type: ApplicationFiled: December 11, 2017Publication date: December 12, 2019Inventors: Tomas DAHLBERG, Niclas BORNEGARD
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Publication number: 20180236611Abstract: A brazing material for brazing articles of austenitic stainless steel comprises: 1.8-2.2% Molybdenum (Mo); 12.5-13.5% Nickel (Ni); 16.8-18.6% Chromium (Cr); 7.0-12.0% Silicon (Si); 3.0-5.5% Mn; 1.0-2.0% Boron (B); balance being Iron (Fe) and small amounts of other elements, wherein the percentages of these elements are lower than 0.1% for each element, all percentages being given by weight.Type: ApplicationFiled: October 6, 2015Publication date: August 23, 2018Applicant: SWEP International ABInventor: Niclas BORNEGÅRD
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Patent number: 10035207Abstract: A method for brazing a plate heat exchanger comprising a stack of heat exchanger plates (110,115) is provided with a pressed pattern of ridges (R) and grooves (G) adapted to form contact points between the plates (110, 115) and provide for interplate flow channels for media to exchange heat is provided. The interplate flow channels are in selective fluid communications with port openings (120, 130, 140, 150) provided near corners of the heat exchanger plates (110, 115).Type: GrantFiled: October 24, 2014Date of Patent: July 31, 2018Assignee: SWEP INTERNATIONAL ABInventor: Niclas Bornegard
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Publication number: 20160250703Abstract: A method for brazing a plate heat exchanger comprising a stack of heat exchanger plates (110,115) is provided with a pressed pattern of ridges (R) and grooves (G) adapted to form contact points between the plates (110, 115) and provide for interplate flow channels for media to exchange heat is provided. The interplate flow channels are in selective fluid communications with port openings (120, 130, 140, 150) provided near corners of the heat exchanger plates (110, 115).Type: ApplicationFiled: October 24, 2014Publication date: September 1, 2016Inventor: Niclas BORNEGARD