WO2025144094A1 - Unité d'évaporateur et système la comprenant, destinés à des systèmes de ventilation d'air - Google Patents

Unité d'évaporateur et système la comprenant, destinés à des systèmes de ventilation d'air Download PDF

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Publication number
WO2025144094A1
WO2025144094A1 PCT/SE2024/051035 SE2024051035W WO2025144094A1 WO 2025144094 A1 WO2025144094 A1 WO 2025144094A1 SE 2024051035 W SE2024051035 W SE 2024051035W WO 2025144094 A1 WO2025144094 A1 WO 2025144094A1
Authority
WO
WIPO (PCT)
Prior art keywords
evaporator unit
sub
tube
tubes
cooling medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/SE2024/051035
Other languages
English (en)
Inventor
Bengt-Göran KARLSSON
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STOCKFORSA INVEST AB
Original Assignee
STOCKFORSA INVEST AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by STOCKFORSA INVEST AB filed Critical STOCKFORSA INVEST AB
Publication of WO2025144094A1 publication Critical patent/WO2025144094A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05333—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D7/00—Sublimation
    • B01D7/02—Crystallisation directly from the vapour phase
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/006—Tubular elements; Assemblies of tubular elements with variable shape, e.g. with modified tube ends, with different geometrical features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0282—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by varying the geometry of conduit ends, e.g. by using inserts or attachments for modifying the pattern of flow at the conduit inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2260/00—Heat exchangers or heat exchange elements having special size, e.g. microstructures
    • F28F2260/02—Heat exchangers or heat exchange elements having special size, e.g. microstructures having microchannels

Definitions

  • the present invention relates to an evaporator unit and energy recovery system for air ventilation systems.
  • the present invention is directed to providing a new type of system which aims at both providing an improved air purification as well as an increased energy efficiency with respect to heat exchanging and thus energy needed for air ventilation systems.
  • an evaporator unit intended for air ventilation systems said evaporator unit comprising
  • a collection tube arranged in connection to the sub-cooler chamber and arranged for receiving cooling medium in a subcooled liquid form from the sub-cooler chamber, arranged to provide for a first sub-cooling in the evaporator unit;
  • - multiple connection tubes extending along an air cooling surface of the evaporator unit and to their releasing ends, wherein the cooling medium transfers from a subcooled liquid phase to a gaseous phase along the multiple capillary tubes via desublimation on an outside of the multiple connection tubes, arranged to provide for a second sub-cooling in the evaporator unit;
  • releasing tube connected to the releasing ends of the multiple connection tubes, said releasing tube arranged to flow the cooling medium in overheated gaseous phase to a compressor of an energy recover system of an air ventilation system;
  • the evaporator unit according to the present invention provides an improved purification of the air as well as energy efficiency for a ventilation system. This is obtained by capturing particles, dirt and contaminants in the air.
  • the concept of the present invention, and thus technical foundation for energy recovery is further explained below.
  • a wire heat exchanger unit as part of the evaporator unit, with vertical tubes and direct expansion creating desublimation in the tubes/threads, which causes water in gaseous form to penetrate through any deposits and toward the pipe and turn into solid form.
  • the water expands (about 9%) when it transitions to solid form/ice with a force of about 2000kg/cm 2 , and the expansion and force “blasts” away the layers stuck to the pipes.
  • a specially adapted capillary tube throttling with subcooling is connected to the chamber in the lower part of the evaporator unit. This is to create a subcooled liquid before it is led further into the pipes/threads. Supercooled liquid is needed to get a fast process and reaction when liquid goes through the second capillary tube into the exchanger. Here, a large cooling effect is needed inside the pipe to create desublimation in the wire tubes of the evaporator unit.
  • the wire tubes are in turn mounted in the exhaust air.
  • One function of the unit according to the present invention is releasing a large amount of energy in a short time, which creates a directed cooling effect towards the inside of the small wire tubes. Desublimation occurs, as mentioned above.
  • the cooling effect will convert water in gaseous form to ice. If the high cooling effect is not achieved, water in gaseous form will first change to liquid and settle on the deposits stuck to the surface and then change to ice.
  • water in gaseous form must diffuse through the deposits and stick to the surface of the wire tubes in solid form. When this happens the water in gas form will change in volume. This occurs against the surface of the wire tubes, and this will blast away the deposits thereon as the water needs the place.
  • Each of the 3 units above are individually unique products for the market and together they have a completely unique function and solution for recycling and purifying exhaust air in industries, bathhouses, farms and stables, etc.
  • the evaporator unit and air ventilation system according to the present invention has a very high purification degree for air comprises particles. This type of air exists in most places today, both public and industrial. Moreover, it should be noted that ventilation systems used today is not adapted for purification of air with a high content of particles. The evaporator unit and air ventilation system are very suitable to handle such air types with a high degree of purification of and energy recover efficiency.
  • Another advantage of the evaporator unit according to the present invention is the fact that defrosting is simplified. Moreover, a defrosting procedure of the unit according to the present invention can be performed when the evaporator unit is operating, and also in less than a couple of minutes.
  • the evaporator comprises a valve for defrosting connected to the collection tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Geometry (AREA)
  • Combustion & Propulsion (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

La présente invention décrit une unité d'évaporateur (1) destinée à des systèmes de ventilation d'air, ladite unité d'évaporateur (1) comprenant : une chambre de sous-refroidisseur (15) prévue pour contenir un milieu réfrigérant sous forme liquide ; un tube de collecte (2) relié à la chambre de sous-refroidisseur (15) et prévu pour recevoir un milieu réfrigérant sous une forme liquide sous-refroidie en provenance de la chambre de sous-refroidisseur (15), prévue pour assurer un premier sous-refroidissement dans l'unité d'évaporateur (1) ; de multiples tubes de raccordement (3) qui s'étendent le long d'une surface de refroidissement par air de l'unité d'évaporateur (1) et jusqu'à leurs extrémités de libération (32), dans laquelle le milieu réfrigérant est transféré d'une phase liquide sous-refroidie vers une phase gazeuse le long des multiples tubes capillaires (3) par désublimation sur un extérieur des multiples tubes de raccordement (3), prévus pour assurer un second sous-refroidissement dans l'unité d'évaporateur (1) ; un tube de libération (4) relié aux extrémités de libération (32) des multiples tubes de raccordement (3), ledit tube de libération (4) étant prévu pour faire circuler le milieu réfrigérant en phase gazeuse surchauffée vers un compresseur (60) d'un système de récupération d'énergie (100) d'un système de ventilation d'air ; et de multiples tubes capillaires (13) prévus avec des extrémités de réception (31) à l'intérieur du tube de collecte (2), lesdits multiples tubes capillaires (13) s'étendant vers ou dans une partie des tubes de raccordement (3).
PCT/SE2024/051035 2023-12-29 2024-12-09 Unité d'évaporateur et système la comprenant, destinés à des systèmes de ventilation d'air Pending WO2025144094A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE2351524-0 2023-12-29
SE2351524 2023-12-29

Publications (1)

Publication Number Publication Date
WO2025144094A1 true WO2025144094A1 (fr) 2025-07-03

Family

ID=96219660

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2024/051035 Pending WO2025144094A1 (fr) 2023-12-29 2024-12-09 Unité d'évaporateur et système la comprenant, destinés à des systèmes de ventilation d'air

Country Status (1)

Country Link
WO (1) WO2025144094A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3122578B2 (ja) * 1994-06-23 2001-01-09 シャープ株式会社 熱交換器
JP3158722B2 (ja) * 1992-10-01 2001-04-23 ダイキン工業株式会社 気液分離型熱交換器
US20080105420A1 (en) * 2005-02-02 2008-05-08 Carrier Corporation Parallel Flow Heat Exchanger With Crimped Channel Entrance
WO2011003416A2 (fr) * 2009-07-06 2011-01-13 Danfoss A/S Procédé pour réguler le débit d'un fluide frigorigène dans un évaporateur à tubes multiples
CN107543336A (zh) * 2016-06-23 2018-01-05 杭州三花家电热管理系统有限公司 集流管和具有该集流管的换热器
CN206959099U (zh) * 2017-07-27 2018-02-02 宁波方太厨具有限公司 一种自清洁吸油烟机
WO2019048542A1 (fr) * 2017-09-06 2019-03-14 Enjay Ab Unité de conduite de fluide pour système de ventilation
US20220221227A1 (en) * 2019-05-20 2022-07-14 Technische Universitat Dresden Heat exchanger and cooling method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3158722B2 (ja) * 1992-10-01 2001-04-23 ダイキン工業株式会社 気液分離型熱交換器
JP3122578B2 (ja) * 1994-06-23 2001-01-09 シャープ株式会社 熱交換器
US20080105420A1 (en) * 2005-02-02 2008-05-08 Carrier Corporation Parallel Flow Heat Exchanger With Crimped Channel Entrance
WO2011003416A2 (fr) * 2009-07-06 2011-01-13 Danfoss A/S Procédé pour réguler le débit d'un fluide frigorigène dans un évaporateur à tubes multiples
CN107543336A (zh) * 2016-06-23 2018-01-05 杭州三花家电热管理系统有限公司 集流管和具有该集流管的换热器
CN206959099U (zh) * 2017-07-27 2018-02-02 宁波方太厨具有限公司 一种自清洁吸油烟机
WO2019048542A1 (fr) * 2017-09-06 2019-03-14 Enjay Ab Unité de conduite de fluide pour système de ventilation
US20220221227A1 (en) * 2019-05-20 2022-07-14 Technische Universitat Dresden Heat exchanger and cooling method

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