Patents by Inventor Uwe FOERSTER

Uwe FOERSTER 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).

  • Patent number: 11143464
    Abstract: A collector tube for a heat exchanger, which may have at least one flat tube, may include a base and a cover arranged opposite one another and embodying a longitudinal duct. The base may have at least one passage having an opening for accommodating the at least one flat tube of the heat exchanger. The at least one passage may have a collar, which may extend away from the longitudinal duct. The cover may have at least one notch, which may be located opposite the at least one passage and which may be embodied for accommodating a subarea of the at least one flat tube.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: October 12, 2021
    Inventors: Axel Dolderer, Uwe Foerster, Martin Kaspar
  • Patent number: 11117440
    Abstract: A heat pump heater for an air conditioning system of a motor vehicle may include a first tube row and a second tube row each including a plurality of flat tubes arranged spaced apart from one another. The first and second tube row may be arranged in parallel to form a tube block. At least some flat tubes of the first tube row may lead into an inlet pipe and at least some flat tubes of the second tube row may lead into an outlet pipe. A refrigerant may be flowable from the inlet pipe via the first tube row and to the outlet pipe via the second tube row. The inlet pipe and the outlet pipe may be fluidically connected to one another via at least one bypass duct such that a liquid phase of the refrigerant is flowable out of the inlet pipe into the outlet pipe.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: September 14, 2021
    Inventors: Uwe Foerster, Martin Sievers
  • Publication number: 20210260966
    Abstract: A heat exchanger for a refrigerant circuit of an air conditioning system, with a heat exchanger block with a first fluid channel as a refrigerant channel for the flow of refrigerant as a first fluid and with a second fluid channel for the flow of a second fluid therethrough. The first fluid channel and the second fluid channel are in thermal contact for the exchange of heat. A third fluid channel is provided, which is provided as a second refrigerant channel for the flow of refrigerant therethrough, wherein a second refrigerant inlet and a second refrigerant outlet are provided, which are in fluid communication with the third fluid channel, wherein the first fluid channel is in direct thermal contact with the third fluid channel as an internal heat exchanger for the exchange of heat between the refrigerant in the first fluid channel with the refrigerant in the third fluid channel.
    Type: Application
    Filed: February 23, 2021
    Publication date: August 26, 2021
    Applicant: MAHLE International GmbH
    Inventors: Michael WALTER, Uwe FOERSTER
  • Publication number: 20200200491
    Abstract: A collector tube for a heat exchanger, which may have at least one flat tube, may include a base and a cover arranged opposite one another and embodying a longitudinal duct. The base may have at least one passage having an opening for accommodating the at least one flat tube of the heat exchanger. The at least one passage may have a collar, which may extend away from the longitudinal duct. The cover may have at least one notch, which may be located opposite the at least one passage and which may be embodied for accommodating a subarea of the at least one flat tube.
    Type: Application
    Filed: November 21, 2019
    Publication date: June 25, 2020
    Inventors: Axel Dolderer, Uwe Foerster, Martin Kaspar
  • Publication number: 20200166277
    Abstract: A collector tube for a heat exchanger having at least one flat tube, may include a base and a cover arranged opposite the base. The base and the cover may define a longitudinal duct. The base may include at least one passage having an opening configured to accommodate the at least one flat tube of the heat exchanger. The opening may have at least one wide edge and at least one narrow edge. The longitudinal duct may have, in a cross section, a diameter that is smaller than the at least one wide edge of the opening. The at least one passage may include a collar extending away from the longitudinal duct.
    Type: Application
    Filed: November 22, 2019
    Publication date: May 28, 2020
    Inventors: Uwe Foerster, Martin Kaspar, Hicham Rouhana, Markus Wawzyniak
  • Publication number: 20200166294
    Abstract: A collector tube for a heat exchanger, which may have at least one flat tube, may include at least one recess, through which a separator may be inserted into the collector tube in an insertion position. The separator may have a separating wall comprising a separating wall thickness, wherein a clearance fit may be present between the separating wall and the recess in response to the insertion of the separator. The separating wall may provide at least one elevation to attain an increase of the separating wall thickness in a subarea of the separator. In the insertion position of the separator, the at least one elevation may be arranged in an area of the recess. In the insertion position, a press fit may be present between the at least one elevation and the recess.
    Type: Application
    Filed: November 22, 2019
    Publication date: May 28, 2020
    Inventors: Axel Dolderer, Uwe Foerster, Martin Kaspar
  • Patent number: 10627140
    Abstract: A receiver having a receiver housing that has a fluid-receiving chamber, a fluid inlet, and a fluid outlet. A drier is provided in the fluid-receiving chamber. The receiver is has an inlet channel protrudes into the fluid-receiving chamber, which inlet channel has a channel outlet in the fluid-receiving chamber and conducts fluid into the fluid-receiving chamber from the fluid inlet as a channel inlet, the inlet channel being shaped in such a way that the fluid flowing out of the channel outlet flows out in a lateral direction. A condenser having the receiver is also provided.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: April 21, 2020
    Assignee: MAHLE International GmbH
    Inventors: Martin Kaspar, Herbert Hofmann, Uwe Foerster
  • Publication number: 20200070620
    Abstract: A heat pump heater for an air conditioning system of a motor vehicle may include a first tube row and a second tube row each including a plurality of flat tubes arranged spaced apart from one another. The first and second tube row may be arranged in parallel to form a tube block. At least some flat tubes of the first tube row may lead into an inlet pipe and at least some flat tubes of the second tube row may lead into an outlet pipe. A refrigerant may be flowable from the inlet pipe via the first tube row and to the outlet pipe via the second tube row. The inlet pipe and the outlet pipe may be fluidically connected to one another via at least one bypass duct such that a liquid phase of the refrigerant is flowable out of the inlet pipe into the outlet pipe.
    Type: Application
    Filed: August 29, 2019
    Publication date: March 5, 2020
    Inventors: Uwe Foerster, Martin Sievers
  • Patent number: 10240826
    Abstract: A heat exchanger is provided that includes a first tube/fin block, first headers arranged on both sides of the first tube/fin block, which first headers communicate with the tubes of the first tube/fin block, and a second tube/fin block having second headers arranged on both sides of the second tube/fin block, which second headers communicate with the tubes of the second tube/fin block, wherein the first tube/fin block having the corresponding first headers is an air-cooled low-temperature coolant cooler and the second tube/fin block having the corresponding second headers is an air-cooled refrigerant cooler, wherein the headers of the first tube/fin block arranged on a respective side of the tube-fin block and a header of the second tube/fin block are connected to one another.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: March 26, 2019
    Assignee: MAHLE International GmbH
    Inventors: Johannes Diem, Uwe Foerster, Pedro Gonzalez Rechea, Klaus Haβdenteufel, Herbert Hofmann, Martin Kaspar
  • Patent number: 10107566
    Abstract: The invention relates to a condenser, in particular a condenser cooled by a coolant, said condenser consisting of at least one tube/fin block having several flat tubes, each flat tube having a plurality of flow channels that extend adjacent to one another in the tube transverse direction and define a refrigerant-side hydraulic diameter (Dh refrigerant). At least one respective intermediate element defining a coolant-side hydraulic diameter (Dh coolant) is arranged in the region of the flat tubes. The condenser is characterized in that the ratio of the two hydraulic diameters (Dh coolant) to (Dh refrigerant) is greater than (>) 1.3.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: October 23, 2018
    Assignee: MAHLE INTERNATIONAL GMBH
    Inventors: Uwe Förster, Herbert Hofmann, Christoph Walter
  • Patent number: 10088204
    Abstract: The invention relates to a condenser of stacked-plate design, having a first flow duct for a refrigerant and having a second flow duct for a coolant.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: October 2, 2018
    Assignee: MAHLE INTERNATIONAL GMBH
    Inventors: Helmut Eibner, Klaus Förster, Uwe Förster, Andreas Dränkow, Martin Kaspar, Christoph Kästle, Thomas Mager, Herbert Hofmann, Markus Pflieger, Holger Striege, Christoph Walter, David Mayor Tonda
  • Patent number: 9970694
    Abstract: This application relates to a coolant condenser assembly for an air conditioning system for a motor vehicle. In a supercooling region, at least two cooling pipes, as the first supercooling parallel section, are acted upon in parallel by the coolant in a fluid-conducting manner, the coolant which flows out of the first supercooling parallel section flows into a first supercooling intermediate flow duct, and the first supercooling intermediate flow duct opens into at least two cooling pipes as the second supercooling parallel section, and the second supercooling parallel section opens into a second supercooling intermediate flow duct and the second supercooling intermediate flow duct opens into at least two cooling pipes as the third supercooling parallel section, such that the outlet opening is disposed on a second longitudinal side of the coolant condenser assembly.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: May 15, 2018
    Assignee: MAHLE International GmbH
    Inventors: Guillaume David, Uwe Förster, Matthias Jung, Andreas Kemle, Christoph Walter, Herbert Hofmann
  • Patent number: 9945614
    Abstract: A heat exchanger is provided that includes a first flow channel for a refrigerant, a second flow channel for a refrigerant, and a third flow channel for a coolant, wherein the first flow channel has a first region for initial cooling of the refrigerant and a second region for further cooling of the refrigerant. The refrigerant can flow in a high-pressure phase in the first flow channel and the refrigerant can flow in a low-pressure phase in the second flow channel. A first heat exchange occurs between the refrigerant in the first region of the first flow channel and the coolant in the third flow channel and a second heat exchange occurs between the refrigerant in the second region of the first flow channel and the refrigerant in the second flow channel.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: April 17, 2018
    Assignee: MAHLE International GmbH
    Inventors: Uwe Foerster, Gottfried Duerr, Herbert Hofmann, Christoph Walter
  • Patent number: 9874405
    Abstract: A heat exchanger with mutually adjacent first flow channels and second flow channels. The first flow channels and the second flow channels are received in a first manifold at a first end region of the flow channel end regions and in a second manifold at a second end region of the flow channel end regions. The first manifold has a first base and the second manifold has a second base, the first base and second base having a plurality of openings in which the end regions of the flow channels are received. The first manifold has a first longitudinal channel and a second longitudinal channel. The second manifold has a second cover which together with the second base of the second manifold forms transverse channels, and one first flow channel and one second flow channel are fluidically connected to each other via a respective transverse channel.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: January 23, 2018
    Assignee: MAHLE International GmbH
    Inventors: Gottfried Duerr, Uwe Foerster, Martin Kaspar, Wolfgang Seewald, Siegfried Tews, Christoph Walter
  • Publication number: 20170307262
    Abstract: A method for assembling a heat exchanger device of a refrigeration unit may include pushing a heat exchanger coil of the heat exchanger device over a refrigerant collecting vessel of the heat exchanger device. The method may also include fluidically connecting the heat exchanger coil to the at least one cover of the heat exchanger device. The method may further include pushing a tubular casing of the heat exchanger device over the heat exchanger coil, and deforming the tubular casing radially inward.
    Type: Application
    Filed: October 6, 2015
    Publication date: October 26, 2017
    Inventors: Uwe FOERSTER, Wolfgang GEIGER, Andreas KOENIG, Karl-Gerd KRUMBACH, David MAYOR-TONDA
  • Patent number: 9783761
    Abstract: A lubricant composition characterized as having a viscosity of less than about 150,000 cP at ?40° C., a kinematic viscosity of less than about 150,000 cSt at ?40° C., and a kinematic viscosity of at least about 18.5 cSt at 100° C. for use in association with a device involving metal to metal contact of moving parts comprising: (a) base-stock comprising (i) at least one relatively low viscosity polyalphaolefin, (ii) at least one ester, and at least one Group III base oil; (b) viscosity improver comprising (i) at least one relatively high viscosity polyalphaolefin, and (ii) a least one olefin copolymer; (c) a performance additive comprising at least one additive effective to improve at least one property of the lubricant and/or the performance of the equipment in which the lubricant is to be used; (d) at least one pour-point depressant; and, optionally, (e) at least one antifoam agent.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: October 10, 2017
    Assignee: COGNIS IP MANAGEMENT GmbH
    Inventors: Vasudevan Balasubramaniam, Mark Witschger, Uwe Förster
  • Patent number: 9546805
    Abstract: In a coolant condenser assembly for a motor vehicle air conditioning system, comprising cooling pipes for conducting a coolant through, two collecting pipes for fluidically connecting the cooling pipes, a collecting container with an upper cover wall and a lower bottom wall and a side wall as well as with an inlet opening for conducting the coolant into the collecting container and an outlet opening for conducting the coolant out of the collecting container, with the result that through the inlet and outlet openings the collecting container is fluidically connected to the collecting pipe and/or the cooling pipes, the collecting container comprises an outlet chamber and a riser pipe, and the outlet opening opens into the outlet chamber, and the outlet chamber is connected to the riser pipe and a storage chamber for the coolant is formed within the collecting container and outside the outlet chamber and outside the riser pipe, the collecting container preferably has an inlet chamber and a downpipe, and the inle
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: January 17, 2017
    Assignee: MAHLE INTERNATIONAL GMBH
    Inventors: Hofmann Herbert, Uwe Förster, Walter Christoph, Guillaume David, Kaspar Martin
  • Publication number: 20160169567
    Abstract: A device is provided that includes a fluid inlet and a fluid outlet, wherein the device is in fluid communication with the refrigerant circuit via the fluid inlet and the fluid outlet, wherein the device contains a granular material which can absorb an amount of fluid from the refrigerant, wherein the amount of granular material contained in the device is calculated according to the formula MG=W/WA, where MG is the mass in [g] of the granular material contained in the device, W is the total amount of fluid in [g] that can be absorbed by the granular material, and WA is the amount of fluid that can be absorbed per gram of granular material.
    Type: Application
    Filed: February 24, 2016
    Publication date: June 16, 2016
    Applicant: MAHLE International GmbH
    Inventors: Uwe FOERSTER, Martin KASPAR, Sabine BITZER, Roger GORGES
  • Publication number: 20160091229
    Abstract: The invention relates to a condenser of stacked-plate design, having a first flow duct for a refrigerant and having a second flow duct for a coolant.
    Type: Application
    Filed: May 15, 2014
    Publication date: March 31, 2016
    Applicant: MAHLE INTERNATIONAL GMBH
    Inventors: Helmut EIBNER, Klaus FÖRSTER, Uwe FÖRSTER, Andreas DRÄNKOW, Martin KASPAR, Christoph KÄSTLE, Thomas MAGER, Herbertä HOFMANN, Markus PFLIEGER, Holger STRIEGE, Christoph WALTER, David MAYOR TONDA
  • Publication number: 20160069597
    Abstract: A condenser assembly including a plurality of heat-exchanger pipes, which are arranged equidistant from each other having corrugated fins arranged therebetween and lead into deflection regions at both ends and have a free length used for heat exchange and, in connection with the corrugated fins, form a frontal area having a width corresponding to the free length of the heat-exchanger pipes and a height, such that the frontal area results from the product of width and height. The heat-exchanger pipes are connected in parallel in groups and the individual groups are connected in series. The heat-exchanger pipes of the individual groups are arranged adjacent and each group has at least two heat-exchanger pipes. The percentage share of the heat-exchanger pipes of the first group results from 26.162 In (S/dm2)?40.746?P?25.49 In (S/dm2)?27.842 for a frontal area.
    Type: Application
    Filed: September 11, 2015
    Publication date: March 10, 2016
    Applicant: MAHLE INTERNATIONAL GMBH
    Inventors: Uwe FOERSTER, Guillaume DAVID, Andreas KEMLE, Matthias JUNG, Christoph WALTER, Ottokar KUNBERGER