-
公开(公告)号：US20250010283A1
公开(公告)日：2025-01-09
申请号：US18763022
申请日：2024-07-03
Applicant: Weiss Technik GmbH
Inventor： Yannik Zahrt , Christian Haack , Johannes Teichmann
Abstract: A test chamber and a method for conditioning air in a test space thereof for receiving test material, the test space being configured to be sealed from an environment and temperature-insulated, a cooling device of a temperature control device of the test chamber, which comprises a cooling circuit with carbon dioxide as a refrigerant, a heat exchanger in the test space, a low-pressure compressor, and a high-pressure compressor, a gas cooler, and an expansion valve downstream of the low-pressure compressor in a flow direction of the refrigerant, being used to establish a temperature between −20° C. to +180° C. within the test space, a control device of the test chamber being used to control the temperature and/or a relative humidity in the test space. A dehumidifier bypass of the cooling circuit, which comprises a second expansion valve and a second heat exchanger, is used to dehumidify air in the test space.
-
公开(公告)号：US11920835B2
公开(公告)日：2024-03-05
申请号：US17171639
申请日：2021-02-09
Applicant: WEISS TECHNIK GMBH
Inventor： Murat Aydin , Tobias Goepfert , Christian Haack
CPC classification number: F25B41/22 , F25B9/008 , F25B41/31 , F25B2309/06 , F25B2600/2513
Abstract: A method for operating a cooling device, a cooling device and a test chamber having a cooling device, a temperature of at least −80° C. or lower being established at the heat exchanger by means of the cooling device having a cooling circuit comprising a refrigerant, a heat exchanger, an internal heat exchanger, a compressor, a condenser and a controllable expansion element of the cooling device, the refrigerant undergoing a phase transition in the heat exchanger, the refrigerant of a high-pressure side of the cooling circuit being cooled by means of the internal heat exchanger, the cooling of the refrigerant of the high-pressure side by means of the internal heat exchanger being used to reduce an evaporation temperature at the expansion element, a zeotropic refrigerant being used as refrigerant, the expansion element being controlled by means of a control device of the cooling device in such a manner that the refrigerant partially freezes during an expansion at the expansion element.
-
公开(公告)号：US20240044775A1
公开(公告)日：2024-02-08
申请号：US18228079
申请日：2023-07-31
Applicant: Weiss Technik GmbH
Inventor： Yannik Zahrt
CPC classification number: G01N17/002 , G01M99/002 , F24F11/84
Abstract: A method and a test chamber for conditioning air, in which the test chamber comprises a temperature-insulated test space, which is closable to an environment and serves for receiving test material, and a temperature control device for controlling the test space in temperature, a temperature ranging from −40° C. to +180° C. being generable within the test space by the temperature control device. The temperature control device comprises a heating apparatus and a cooling apparatus having a cooling cycle, the cooling cycle having a refrigerant, a heat exchanger disposed in the test space, a compressor, a condenser and an expansion element, the refrigerant being a hydrocarbon or a refrigerant mixture made of hydrocarbons. A stop element is disposed in the cooling cycle downstream of the heat exchanger and upstream of the compressor, the stop element being able to stop reflux of refrigerant in the heat exchanger in the opposite direction of flow.
-
公开(公告)号：US20240044530A1
公开(公告)日：2024-02-08
申请号：US18228095
申请日：2023-07-31
Applicant: Weiss Technik GmbH
Inventor： Yannik Zahrt , Dennis Reuschel , Christian Haack
CPC classification number: F24F5/001 , G01N17/002 , F24F11/86 , F25B9/008 , F25B2600/2513
Abstract: A method for conditioning air in a temperature-insulated test space of a test chamber and a test chamber serving for receiving test material, in which a temperature ranging from −20° C. to +180° C. is generated within the test space. A cooling cycle has an internal heat exchanger, which is connected on a high-pressure side of the cooling cycle downstream of a gas cooler and upstream of an expansion valve, the internal heat exchanger being coupled with a medium-pressure bypass of the cooling cycle, the medium-pressure bypass being connected downstream of the internal heat exchanger or the gas cooler and upstream of the expansion valve on the high-pressure side as well as upstream of a high-pressure compressor and downstream of a low-pressure compressor on a medium-pressure side of the cooling cycle, refrigerant being dosed in the medium-pressure side from the high-pressure side via the internal heat exchanger by a second expansion valve.
-
公开(公告)号：US11891560B2
公开(公告)日：2024-02-06
申请号：US17319525
申请日：2021-05-13
Applicant: WEISS TECHNIK GMBH
Inventor： Christian Haack , David Blaufelder , Murat Aydin
CPC classification number: C09K5/045 , F25B9/008 , C09K2205/106 , C09K2205/126 , C09K2205/128 , F25B2309/06
Abstract: The invention relates to a refrigerant for a cooling device (10) comprising a cooling circuit (11) comprising at least one heat exchanger (12), the refrigerant undergoing a phase transition in the heat exchanger, the refrigerant being a refrigerant mixture composed of a fraction of carbon dioxide (CO2), a fraction of 1,1-difluoroethene and a fraction of at least one other component, wherein the fraction of carbon dioxide in the refrigerant mixture is 45 to 90 mole percent, the fraction of 1,1-difluoroethene being 5 to 40 mole percent.
-
Patent Agency Ranking
公开(公告)号：US20220026116A1
公开(公告)日：2022-01-27
申请号：US17494776
申请日：2021-10-05
Applicant: WEISS TECHNIK GMBH
Inventor： Christian Haack , Yannik Zahrt , Dennis Reuschel , Andre Zinnkann , Pascal Bellet
Abstract: A method for conditioning a fluid in a temperature-insulated test space and a test space of a test chamber for receiving test materials. A cascading cooling device creates a particular temperature range within the test space, and the cooling device has a first cooling circuit comprising a cascading heat exchanger, a first compressor, a condenser and a first expanding element, and a second cooling circuit comprising a heat exchanger, a second compressor, the cascading heat exchanger and a second expanding element. The cascading heat exchanger is cooled by the first cooling circuit, the heat exchanger is cooled by a bypass passing through the heat exchanger and bridging the cascading heat exchanger, the first compressor is turned off, and a first refrigerant is conducted and condensed in a gaseous state in the cascading heat exchanger on a low-pressure side of the bypass.
-
公开(公告)号：US20240044774A1
公开(公告)日：2024-02-08
申请号：US18228052
申请日：2023-07-31
Applicant: Weiss Technik GmbH
Inventor： Yannik Zahrt , Felix Diehl , Christian Haack
CPC classification number: G01N17/002 , F24F11/84 , G01M99/002
Abstract: A test chamber and a method for conditioning air in which the test chamber comprises a temperature-insulated test space, which is closable to an environment and serves to receive test material, and a temperature control device for controlling the test space in temperature, a temperature ranging from −40 ° C. to +180 ° C. being generable within the test space by the temperature control device. The temperature control device comprises a cooling apparatus having a first and second cooling cycle, the first cooling cycle having a first refrigerant, a first heat exchanger, a first compressor, a first condenser and a first expansion element, the first refrigerant being a hydrocarbon or a refrigerant mixture made of hydrocarbons. The second cooling cycle has a heat transfer medium, a second heat exchanger in the test space and a pump, the second cooling cycle being coupled to the first cooling cycle by the first heat exchanger.
-
公开(公告)号：US20240044677A1
公开(公告)日：2024-02-08
申请号：US18228142
申请日：2023-07-31
Applicant: WEISS TECHNIK GMBH
Inventor： Marc Loeffler , Juergen Nufer
IPC: G01D11/24
CPC classification number: G01D11/24
Abstract: A test chamber for conditioning air (such as a climate chamber) and a method for controlling the test chamber. The chamber includes a temperature-insulated test space, (limited by walls closable using a door, and serving to received test material), a control device configured to control a function of the test chamber, and a temperature control device for controlling temperature of a test space that has at least one window. The temperature control device includes a cooling apparatus and a heating apparatus, and is configured to control the temperature within the test space from -40° C. to +180° C. The window of the test space is formed to have a shield device of the test chamber. The control device is configured to bring the shield device either into a first operating state or a second operating state. Here, in the first operational state the shield device establishes a window transmittance that is smaller (and/or a window absorbance that is larger) than that/those in the second operating state.
-
9.外观设计公开(公告)号：USD932511S1
公开(公告)日：2021-10-05
申请号：US35502286
申请日：2016-11-25
Applicant: WEISS TECHNIK GMBH
Designer： Patrick Alt , Lisa Foellinger
-
公开(公告)号：US11434402B2
公开(公告)日：2022-09-06
申请号：US16808625
申请日：2020-03-04
Applicant: WEISS TECHNIK GMBH
Inventor： Murat Aydin , Christian Haack
Abstract: A refrigerant for a cooling device comprising a cooling circuit with at least one heat exchanger, the refrigerant undergoing a phase transition in the heat exchanger, the refrigerant being a refrigerant mixture composed of a mass fraction of carbon dioxide (CO2), a mass fraction of pentafluoroethane (C2HF5) and a mass fraction of at least one other component, wherein the mass fraction of carbon dioxide in the refrigerant mixture is up to 60 mass percent, the mass fraction of pentafluoroethane being 11 to 72 mass percent, the other component being 2,3,3,3-tetrafluoropropene (C3H2F4), the mass fraction of 2,3,3,3-tetrafluoropropene being up to 51 mass percent.
-
-
-
-
-
-
-
-
-
Search Results
10
records
(took 0.014 seconds)
