EP4616127A1 - Agencement de vanne de dilatation à flotteur - Google Patents

Agencement de vanne de dilatation à flotteur

Info

Publication number
EP4616127A1
EP4616127A1 EP23798792.0A EP23798792A EP4616127A1 EP 4616127 A1 EP4616127 A1 EP 4616127A1 EP 23798792 A EP23798792 A EP 23798792A EP 4616127 A1 EP4616127 A1 EP 4616127A1
Authority
EP
European Patent Office
Prior art keywords
float
valve
valve element
arrangement according
liquid
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
EP23798792.0A
Other languages
German (de)
English (en)
Inventor
Johan Van Beek
Niels P. VESTERGAARD
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.)
Danfoss AS
Original Assignee
Danfoss AS
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 Danfoss AS filed Critical Danfoss AS
Publication of EP4616127A1 publication Critical patent/EP4616127A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/315—Expansion valves actuated by floats
    • 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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide

Definitions

  • the inner valve element comprises a first cylinder wall having a plurality of first openings and the outer valve element comprises at least a corresponding number of wall sections, wherein in a closed position of the valve element the first openings are covered by the wall sections of the outer valve element.
  • the wall sections of the outer valve element open or close the openings in the first cylinder wall of the inner valve element.
  • the valve is configured such that in a fully open position (in a fully open state) of the valve, all first openings are uncovered by the wall sections (not covered by the wall sections) for allowing liquid flow through the first openings, for example from the hollow to the expansion chamber.
  • Fig. 1 shows schematically a system in which the float valve arrangement can be used
  • Fig. 2 shows schematically a section through the float valve arrangement
  • Fig. 3 shows schematically a section perpendicular to the section of Fig. 2 and
  • Fig. 4 shows details of the valve within an insert.
  • Fig. 1 shows schematically a system 1 comprising an evaporator 2 (which can also be a liquid separator for a CO2 plant) and an expansion valve 3 which is simply termed “valve” in the following.
  • the valve 3 is actuated by means of a float 4 which is arranged in a float chamber 5.
  • the float chamber 5 is connected to the evaporator 2 by means of a gas balancing pipe 6 connecting a gas side of the evaporator 2 with a gas side of the float chamber 5 and by means of a liquid balancing pipe 7 connecting the liquid side of the evaporator 2 to the liquid side of the float chamber 5.
  • the valve 3 is arranged between a first liquid port 8 and a second liquid port 9 in the system 1 shown in Fig. 1.
  • the first liquid port 8 is supplied with a liquid under high pressure, for example CO2 having a pressure of 60 to 70 bar.
  • the second liquid port 9 is connected to the evaporator 2 by means of an expanded liquid pipe 10.
  • a liquid level 11 in the evaporator 2 is determined by a liquid level 12 in the float chamber 5.
  • the liquid level 12 in the float chamber 5 is detected by means of the float 4.
  • the float 4 in turn actuates the valve 3.
  • the float chamber 5 and the valve 3 are arranged in a common float valve arrangement 13.
  • the float valve arrangement comprises a housing having a first part 14 and a second part 15.
  • the second part 15 is fixed to a mounting face 16 of the first part 14.
  • the first part 14 comprises a bore 17 in which an insert 18 is arranged.
  • the insert 18 is shown in more detail in Fig. 4.
  • the bore 17 is a blind bore having a bottom wall 19 in which the second liquid port 9 is arranged.
  • the valve 3 is arranged within the insert 18.
  • the valve 3 comprises a cylindrical inner valve element 20 which is stationary, and a cylindrical outer valve element 21 which can be rotated around the inner valve element 20.
  • the movement of the cylindrical outer valve element 21 is caused by the float 4 which is connected to the cylindrical outer valve element 21 by means of a lever 22.
  • the cylindrical inner valve element 20 comprises a hollow 23 which is directly connected to the first liquid port 8. Furthermore, the cylindrical inner valve element 20 comprises a plurality of first openings 24 which are covered by wall sections 25 of the cylindrical outer valve element 21 when the valve 3 is closed. However, when the cylindrical outer valve element 21 is rotated with respect to the cylindrical inner valve element 20, the wall sections 25 are moved away from the openings 24, so that there is a connection between the first liquid port 8 and an expansion chamber 26 arranged in the insert 18. The expansion chamber 26 is connected to the second liquid port 9.
  • the first liquid port 8 is connected or arranged in a front face 19 of the cylindrical inner valve element 20.
  • the hollow 23 is closed at an end opposite to the first front face 29.
  • the insert 18 is mounted to the first housing part 14 from the mounting face 16. When the second housing part 15 is fixed to the first housing part 14 the insert 18 is reliably held within the float valve arrangement 13.
  • the insert 18 is sealed in the bore 17 by means of a first sealing ring 27 near the end of the insert 18 adjacent the mounting face 16 and by a second sealing ring 28 near the other end, i.e. near the second liquid port 9.
  • the hollow 23 within the cylindrical inner valve element 20 is closed at the side from which the cylindrical outer valve element 21 is mounted.
  • the connection between the float 4 and the cylindrical outer valve element 21 can be kept free from the high pressures at the first pressure port 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Float Valves (AREA)

Abstract

Un agencement de vanne à flotteur (13) est décrit, l'agencement de vanne à flotteur (13) comprenant un boîtier (14, 15), un premier orifice de liquide (8), un deuxième orifice de liquide (9), une entrée de gaz d'équilibrage (6) et une entrée de liquide d'équilibrage (7), l'entrée de gaz d'équilibrage (6) et l'entrée de liquide d'équilibrage (7) étant reliées à une chambre à flotteur (5) dans laquelle est agencé un flotteur (4), le flotteur (4) agissant sur une vanne (3) à l'extérieur de la chambre à flotteur (4), la vanne (3) étant agencée entre le premier orifice de liquide (8) et le deuxième orifice de liquide (9). La vanne (3) comprend un élément de vanne interne cylindrique (20) comprenant un creux (23) et un élément de vanne externe cylindrique (21) pouvant tourner autour de l'élément de vanne interne (20), le flotteur (4) agissant sur l'élément de vanne externe (21) et le premier orifice de liquide (8) étant raccordé au creux (23) de l'élément de vanne interne (20). Un tel agencement de vanne à flotteur doit supporter des différences de pression élevées avec peu d'effort. À cet effet, la vanne (3) est disposée à l'intérieur d'une chambre de dilatation (26).
EP23798792.0A 2022-11-08 2023-11-01 Agencement de vanne de dilatation à flotteur Pending EP4616127A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA202201015 2022-11-08
PCT/EP2023/080454 WO2024099845A1 (fr) 2022-11-08 2023-11-01 Agencement de vanne de dilatation à flotteur

Publications (1)

Publication Number Publication Date
EP4616127A1 true EP4616127A1 (fr) 2025-09-17

Family

ID=88647630

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23798792.0A Pending EP4616127A1 (fr) 2022-11-08 2023-11-01 Agencement de vanne de dilatation à flotteur

Country Status (3)

Country Link
EP (1) EP4616127A1 (fr)
CN (1) CN120092161A (fr)
WO (1) WO2024099845A1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3375504B1 (fr) * 2017-03-14 2021-02-24 Danfoss A/S Soupape de vidange et agencement de soupape
CN110701806B (zh) * 2019-10-24 2024-04-30 天津商业大学 带液位控制及旁通导气管的双流程微通道蒸发器制冷系统

Also Published As

Publication number Publication date
CN120092161A (zh) 2025-06-03
WO2024099845A1 (fr) 2024-05-16

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