EP3948109B1 - Vanne de détente - Google Patents

Vanne de détente Download PDF

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Publication number
EP3948109B1
EP3948109B1 EP20715298.4A EP20715298A EP3948109B1 EP 3948109 B1 EP3948109 B1 EP 3948109B1 EP 20715298 A EP20715298 A EP 20715298A EP 3948109 B1 EP3948109 B1 EP 3948109B1
Authority
EP
European Patent Office
Prior art keywords
valve
housing
connecting element
expansion valve
partially
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.)
Active
Application number
EP20715298.4A
Other languages
German (de)
English (en)
Other versions
EP3948109A1 (fr
Inventor
Gerald Kuenzel
Thomas Holzer
Balint Janos Repasi
Jan Schlegel
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority claimed from DE102020203757.4A external-priority patent/DE102020203757A1/de
Publication of EP3948109A1 publication Critical patent/EP3948109A1/fr
Application granted granted Critical
Publication of EP3948109B1 publication Critical patent/EP3948109B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • F25B41/35—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors

Definitions

  • the invention is based on an expansion valve with the features of the independent claim.
  • the EP 1 806 550 A2 discloses an expansion valve according to the preamble of claim 1.
  • the invention is based on an expansion valve for controlling a fluid flow, with a valve center housing and at least one valve means movably arranged in the valve center housing and an actuator housing in which the electric drive of the expansion valve is arranged, the valve center housing essentially being at least partially made of a metal, in particular Aluminum is formed and wherein the actuator housing is essentially at least partially made of plastic and wherein the actuator housing is attached to the valve center housing by means of at least one connecting element.
  • the connecting element is at least partially designed as a latching element and, in addition or alternatively, as a clip element.
  • the expansion valve according to the invention with the features of the independent claim has the advantage that a simple and cost-effective connection between the actuator housing and the valve center housing can be provided.
  • the actuator housing can be mounted particularly easily on the valve center housing using the connecting element according to the invention. Furthermore, the space required for the connection can be reduced.
  • the connecting element according to the invention enables different expansion valve variants to be connected without additional adjustment.
  • the connecting element according to the invention is advantageously able to provide a simple and secure connection between two components made of different materials.
  • the fluid in the flow area of the valve center housing is at least partially in a gaseous phase, with high pressures in the range between 1-30 bar and briefly up to 100 bar prevailing.
  • a valve center block is made of a metal, preferably aluminum or an aluminum alloy.
  • at least one housing part of the valve center housing has a plastic body with a diffusion-inhibiting barrier layer that contains metal.
  • Such a valve center housing can be manufactured easily and inexpensively compared to an aluminum block housing.
  • due to the gas-tightness of the expansion valve according to the invention it can be used in fluid circuits in which the fluid is at least partially in a gaseous phase.
  • the actuator housing in which the electric drive is arranged, is subject to different boundary conditions in terms of tightness and functionality, so that it is at least partially made of plastic.
  • a fluid of the type in question here is a heat transfer medium that circulates within the fluid circuit.
  • the fluid is a natural refrigerant, such as hydrocarbons, carbon dioxide, ammonia, propane, butane, Propene, water or a synthetic refrigerant such as chlorofluorocarbons or hydrofluorocarbons.
  • the connecting element has at least a first section and at least a second section, with the first section engaging at least partially in the valve center housing and with the second section locking at least in sections with the actuator housing and with the second section on has a Christmas tree-shaped toothing on its outer surface.
  • a Christmas tree-shaped toothing can be understood to mean an outer contour of the connecting element which has a large number of teeth.
  • the teeth or projections of the Christmas tree-shaped toothing lock or claw in an advantageous manner with the receptacle on the actuator housing, so that a particularly simple and secure connection of the housing can be provided.
  • the actuator housing made of plastic, the actuator housing is deformed when the Christmas tree-shaped toothing is inserted, so that a captive connection can be provided.
  • the first section of the connecting element is designed to be elastic in the circumferential direction.
  • Such a connecting element, which is elastic in the circumferential direction can be introduced particularly easily into the valve center housing under prestress, so that the connecting element is held in the housing due to the restoring force.
  • a particularly simple and robust solution can be provided in that the first section is designed as an at least partially slotted sleeve.
  • the second section extends essentially in the axial direction, the second section being essentially flat and having an insertion bevel at its free end facing away from the first section.
  • an insertion bevel enables the second section to be inserted particularly easily into the actuator housing.
  • the axial direction of such an expansion valve can be understood to mean, in particular, the direction of extension of the valve stem on which the valve means is arranged.
  • the connecting element surrounds the valve center housing and the actuator housing in the axial direction.
  • the connecting element is preferably designed as a clamp element.
  • a particularly simple and space-saving connecting element can be provided in particular in that the connecting element is essentially U-shaped and has at least two legs, the legs being arranged essentially parallel to one another.
  • the legs of the connecting element preferably also each have a free end, with clamping projections being arranged at the free ends of the connecting element. When assembled, these clamping projections can be inserted into corresponding undercuts, which are on Valve center housing and alternatively or additionally also arranged on the actuator housing intervene.
  • a particularly cost-effective connecting element can be provided in particular in that the connecting element is designed in one piece, in particular as a stamped and bent part.
  • Figure 1 shows a first exemplary embodiment of an expansion valve 10 in an exploded view.
  • the expansion valve 10 has, as in Figure 1 can be clearly seen, an actuator housing 14 and a valve center housing 12. At least one valve means 16 is arranged within the valve center housing 12.
  • the valve means 16 is designed to be movable, in particular rotatable, relative to the valve means housing 12.
  • the first valve center housing 12 has a flow area which is composed of one Fluid flows through.
  • a fluid of the type in question here is a heat transfer medium that circulates within the fluid circuit.
  • the fluid is a natural refrigerant, such as hydrocarbons, carbon dioxide, ammonia, propane, butane, propene, water or a synthetic refrigerant such as chlorofluorocarbons or partially halogenated fluorocarbons.
  • a natural refrigerant such as hydrocarbons, carbon dioxide, ammonia, propane, butane, propene, water or a synthetic refrigerant such as chlorofluorocarbons or partially halogenated fluorocarbons.
  • the valve center housing 12 has at least two first openings 20, 22, which form an inlet or an outlet for the fluid into the valve center housing 12. Due to the view chosen, in Figure 1 only one of the first two openings 20, 22 can be seen.
  • the two openings 20, 22 are according to FIG Figure 1 illustrated embodiment of the invention is arranged perpendicular to an axial direction 18 of the expansion valve 10 within the valve center housing 12.
  • the valve center housing 10 can in particular be designed as a valve center block, which is designed to be essentially gas-tight under the thermodynamic conditions present in an expansion valve 10.
  • the fluid in the flow area of the valve center housing 12 is at least partially in a gaseous phase, with high pressures in the range between 1-30 bar and briefly up to 100 bar prevailing.
  • a valve center block 12 is made of a metal, preferably aluminum or an aluminum alloy.
  • at least one housing part of the valve center housing 12 has a plastic body with a diffusion-inhibiting barrier layer which contains metal.
  • Such a valve center housing 12 can be manufactured easily and inexpensively compared to an aluminum block housing.
  • the expansion valve 10 according to the invention can be used in fluid circuits in which the fluid is at least partially in a gaseous phase.
  • an actuator housing 14 is arranged on the valve center housing 12.
  • the actuator housing 14 has two actuator housing parts 24, 26, within which an electric drive (not shown here) is arranged.
  • an electric drive can in particular be designed as a stepper motor, brushless motor or brush motor.
  • the actuator housing 14 is essentially at least partially made of plastic. In particular, the actuator housing 14 is manufactured using injection molding.
  • a gear is arranged within the actuator housing 14, which transmits the movement of the electric drive to a corresponding valve stem 30.
  • Motor electronics for controlling the electric drive are also arranged in the actuator housing 14.
  • the corresponding valve means is arranged on the valve stem 30.
  • the valve stem 30 passes through an opening 32 of the valve center housing 12 and extends essentially in the axial direction 18.
  • a housing element 34 designed as a cover is arranged on the second opening 32.
  • the housing element 34 has a bore concentric to the axial direction 18, through which the valve stem 30 protrudes into the valve center housing 12.
  • the actuator housing 14 is fastened to the valve center housing 14 by means of at least one connecting element 40, which is at least partially designed as a latching element and alternatively or additionally as a clip element.
  • Figures 1 and 2 each show a first embodiment of such a locking or clip element.
  • the connecting element 40 surrounds the valve center housing 12 and the actuator housing 14 in the axial direction 18 and is designed as a clamp element.
  • the clamping element 40 has a clamping projection 44 at one of its free ends 42b and a further clamping projection 45 is formed by the arc segment 60.
  • the arc segment is part of the free end 42a, in particular of the leg 58.
  • the clamping projections 44, 45 engage in corresponding undercuts 46, 47 of the valve center housing 12 and the actuator housing 14, respectively.
  • the undercut 46 of the valve center housing 12 is designed as a recess in the valve center housing 12 that extends essentially in the radial direction.
  • the side surface 48 of the undercut 46 facing the actuator housing 14 extends essentially perpendicular to the axial direction 18. In the assembled state, this side surface 48 acts as an axial stop for the connecting element 40.
  • At least one projection 50 extending in the radial direction is arranged on the actuator housing 14, on which the undercut 47 of the actuator housing 14 is at least partially formed.
  • the first clamping projection is usually first 44 is hooked into the undercut 46 of the valve center housing 12 and then the second clamping projection 45 is inserted into the corresponding undercut 47 of the actuator housing 14.
  • the projection 50 of the actuator housing 14 preferably has an insertion bevel 52.
  • the expansion valve 10 has two connecting elements 40, which are each arranged on opposite sides of the expansion valve 10.
  • the number and arrangement of the connecting elements 40 can vary.
  • the connecting element 40 is off Figure 1 shown enlarged
  • the clamp element 40 is essentially U-shaped, having a first middle section 56 and legs 58, 59 arranged on both sides of the middle section 56, which each form the free ends 42a, b of the connecting element 40.
  • the legs 58, 59 of the clamping element 40 are arranged essentially parallel to one another and, in the assembled state, extend essentially in the radial direction.
  • the middle section 56 of the clamp element 40 is according to FIG Figure 2 illustrated embodiment is at least partially flat and extends essentially in the axial direction 18 in the assembled state.
  • the clamping element 40 spans with its legs 58, 59 the edge area between the abutting valve center housing 12 and the actuator housing 14.
  • the clamping element has clamping projections 44, 45, which in the assembled state in the respective Undercuts 46, 47 engage on the valve center housing 12 or actuator housing 14.
  • the clamping projection 45 which engages in the actuator housing 14 in the assembled state, is bent at an acute angle ⁇ relative to the direction of extension of the associated leg 58.
  • the clamping projection 45 expediently has an arc segment 60 which extends in the axial direction 18 and which slides over the insertion bevel 52 during assembly before it snaps into the corresponding undercut 47.
  • the leg 59 which engages in the valve center housing 12 in the assembled state, is essentially arcuate, with the free end 42b of the arcuate leg 59 in the assembled state resting against the side wall 48 of the undercut 46 of the valve center housing 12. In this way, sufficient preload can be applied to the clamp element 40 during assembly.
  • the connecting element 40 shown is made in one piece. Such a connecting element 40 can be produced particularly easily using a stamping and bending process.
  • the free end 42b of the clamping element 40 forms the clamping projection 44.
  • the clamp element 40 has a bend in the area 49 across its width.
  • a bend is also formed across the width in the middle section 56.
  • the optional bend in region 49 is preferably the reverse of the optional bend in region 56.
  • the end faces 51 of the free ends 42a, b have edges and/or corners that are preferably not rounded or angled. On the end faces 51, the free ends 42a, b are formed with edges and/or corners. There are no tapers towards the free ends 42a, b.
  • the Clamping projection 44 and the free end 42b have no taper in width.
  • the clamping projection 44 and the free end 42b have edges and/or corners.
  • the clamping projection 44 and the free end 42b preferably have no roundings.
  • the end faces 51 of the free ends 42a, b are rectangular.
  • the edges are preferably angular and not rounded.
  • the width of the clip element 40 is substantially the same over its entire length.
  • the end face 51 of the free end 42b which forms the clamping projection 44, has a concave shape across the width.
  • the middle section 56 preferably has no kink in the axial direction.
  • the free end 42b forms the clamping projection 44.
  • a further clamping projection 45 is formed by the leg 58 or the further free end 42a, in particular the arc segment 60.
  • the normal vector of the end face 51 of the free end 42b points essentially in the axial direction 18.
  • Figures 3 and 4 each show a second embodiment of a connecting element 40.
  • Figure 3 shows a perspective view of the valve center housing 12 of the expansion valve 10.
  • the valve block has at least two first openings 20, 22 through which the fluid can flow in or out.
  • the valve center housing 12 has a second opening 32 through which the valve stem 30 passes.
  • the valve center housing 12 has a substantially flat contact surface 35 on which the actuator housing 14 is arranged in the assembled state.
  • the connecting element 40 for connecting the valve center housing 12 to the actuator housing 14 has at least a first section 70 and a second section 72.
  • the first section 70 engages at least partially in a corresponding bore 80 of the valve center housing 12.
  • the second section 72 has a Christmas tree-shaped toothing 74 on its outer surface.
  • the second section 72 of the connecting element 40 extends essentially in the axial direction 18.
  • the first section 70 of the connecting element 40 is designed to be elastic in the circumferential direction and is held in the valve center housing 12 due to its spring force and the friction.
  • the second section 72 engages with its Christmas tree-shaped teeth 74 in the actuator housing 14 and locks or claws here, whereby a secure connection between the valve center housing 12 and the actuator housing 14 can be provided.
  • two connecting elements 40 are provided for connecting the actuator housing 14 to the valve center housing 12, the two connecting elements 40 each being arranged rotated by 45 ° to one another in the circumferential direction.
  • FIG 4 is a connecting element according to in Figure 3 illustrated embodiment shown enlarged.
  • the connecting element 40 has a first section 70 and a second section 72.
  • the connecting element 40 extends essentially in the axial direction 18.
  • the first section 70 engages at least partially in the valve center housing 12 and the second section 72 locks with the actuator housing 14 with its Christmas tree-shaped toothing 74 arranged on the outer surface.
  • the first section 70 is designed to be elastic in the circumferential direction.
  • the second section 70 is designed as a slotted sleeve for this purpose.
  • both the slot 88 and the through opening 90 of the slotted sleeve 70 extend essentially in the axial direction 18.
  • the slotted sleeve 70 is pressed together and inserted into the bore 80 of the valve center housing 12, which extends in the axial direction 18. Due to the restoring force of the elastic sleeve, it is pressed against the bore wall of the valve center housing 12 and held here.
  • the second section 72 is arranged on an end face 92 of the sleeve 70.
  • the second section 72 lies radially opposite the slot 88.
  • the second section 72 extends essentially in the axial direction 18 and is essentially flat. It has the Christmas tree-shaped teeth 74 on its outer surface.
  • the Christmas tree-shaped toothing is formed by three, Teeth 94 arranged on both sides of the second section are formed. The tooth size of the teeth 94 preferably decreases as the distance from the first section 70 increases.
  • the second section 72 has an insertion bevel 96 at its free end facing away from the first section, which facilitates the assembly of the actuator housing 14 on the valve center housing 12.
  • the connecting element 40 shown is made in one piece. Such a connecting element 40 can be produced particularly easily using a stamping and bending process.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Valve Housings (AREA)

Claims (10)

  1. Vanne de détente (10) pour la commande d'un écoulement de fluide, avec un boîtier de moyen de vanne (12) et au moins un moyen de vanne (16) agencé de manière mobile dans le boîtier de moyen de vanne (12) et un boîtier d'actionneur (14) dans lequel est agencé l'entraînement électrique de la vanne de détente (10), le boîtier de moyen de vanne (12) étant réalisé au moins partiellement en un métal, notamment en aluminium ou en un alliage d'aluminium, ou au moins partiellement en un corps en matière plastique avec une couche de blocage empêchant la diffusion, qui contient du métal, et le boîtier d'actionneur (14) étant réalisé au moins partiellement en matière plastique, et le boîtier d'actionneur (14) étant fixé au boîtier de moyen de vanne (12) au moyen d'au moins un élément de liaison (40), caractérisée en ce que l'élément de liaison (40) est réalisé au moins partiellement sous forme d'élément d'encliquetage et/ou d'élément de clipsage.
  2. Vanne de détente (10) selon la revendication 1, caractérisée en ce que l'élément de liaison (40) présente au moins une première section (70) et une deuxième section (72), la première section (70) s'engageant au moins partiellement dans le corps de moyen de vanne (12) et la deuxième section (72) s'encliquetant au moins par sections avec le boîtier d'actionneur (14) et la deuxième section (72) présentant sur sa surface d'enveloppe extérieure une denture (74) en forme de sapin.
  3. Vanne de détente (10) selon la revendication précédente, caractérisée en ce que la première section (70) de l'élément de liaison (40) est réalisée sous forme élastique dans la direction périphérique, notamment sous forme de manchon au moins partiellement fendu.
  4. Vanne de détente (10) selon l'une quelconque des revendications 2 à 3, caractérisée en ce que la deuxième section (72) s'étend essentiellement dans la direction axiale (18), la deuxième section (72) étant réalisée sous forme essentiellement plane et présentant un biais d'introduction (96) à son extrémité libre détournée de la première section (70) .
  5. Vanne de détente (10) selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément de liaison (40) entoure le boîtier de moyen de vanne (12) et le boîtier d'actionneur (14) dans la direction axiale (18), l'élément de liaison (40) étant de préférence réalisé sous forme d'élément de pince.
  6. Vanne de détente (10) selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément de liaison (40) est réalisé essentiellement en forme de U et présente au moins deux branches (58, 59), les branches (58, 59) étant agencées essentiellement parallèlement entre elles.
  7. Vanne de détente (10) selon la revendication précédente, caractérisée en ce que les branches (58, 59) de l'élément de liaison (40) présentent chacune une extrémité libre (42a, b), des saillies de serrage (44, 45) étant agencées respectivement aux extrémités libres (42a, b) de l'élément de liaison (40).
  8. Vanne de détente (10) selon l'une quelconque des revendications précédentes, caractérisée en ce qu'une contre-dépouille (46, 47) est agencée sur le boîtier de moyen de vanne (12) et/ou sur le boîtier d'actionneur (14), dans laquelle s'engage la saillie de serrage (44, 45) correspondante de l'élément de liaison (40).
  9. Vanne de détente (10) selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément de liaison (40) est réalisé d'une seule pièce, notamment sous forme de pièce découpée et pliée.
  10. Vanne de détente (10) selon l'une quelconque des revendications précédentes, caractérisée en ce que le boîtier de moyen de vanne (12) présente au moins deux premières ouvertures (20, 22), le moyen de vanne (16) étant agencé de manière mobile à l'intérieur du boîtier de moyen de vanne (12) et un écoulement de fluide à travers les ouvertures (20, 22) pouvant être libéré et pouvant être modifié en fonction de la position du moyen de vanne (16) par rapport aux ouvertures (20, 22).
EP20715298.4A 2019-03-29 2020-03-24 Vanne de détente Active EP3948109B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019204471 2019-03-29
DE102020203757.4A DE102020203757A1 (de) 2019-03-29 2020-03-24 Expansionsventil
PCT/EP2020/058136 WO2020193538A1 (fr) 2019-03-24 2020-03-24 Vanne de détente

Publications (2)

Publication Number Publication Date
EP3948109A1 EP3948109A1 (fr) 2022-02-09
EP3948109B1 true EP3948109B1 (fr) 2023-10-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20715298.4A Active EP3948109B1 (fr) 2019-03-29 2020-03-24 Vanne de détente

Country Status (4)

Country Link
US (1) US20220170676A1 (fr)
EP (1) EP3948109B1 (fr)
CN (1) CN113574333B (fr)
WO (1) WO2020193538A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022263290A1 (fr) * 2021-06-15 2022-12-22 Robert Bosch Gmbh Dispositif de distribution de fluide pour une soupape fluidique
US11802632B2 (en) * 2021-06-29 2023-10-31 Textron Innovations Inc. Modulating butterfly valve control

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6073907A (en) * 1997-11-07 2000-06-13 Erie Manufacturing Company Removable and interchangeable valve actuator system
JP4550528B2 (ja) * 2004-09-01 2010-09-22 株式会社不二工機 電動弁
US7131635B2 (en) * 2004-12-17 2006-11-07 Invensys Building Systems, Inc. Removable interconnection of an actuator to a valve body
JP4812601B2 (ja) * 2006-01-05 2011-11-09 株式会社不二工機 電動弁
DE102011006202A1 (de) * 2011-03-28 2012-10-04 Robert Bosch Gmbh Ventil zum Zumessen eines Mediums
US9423143B2 (en) * 2013-12-18 2016-08-23 Honeywell International Inc. HVAC actuator with light indicator
CN107076327B (zh) * 2014-10-31 2018-11-20 三菱电机株式会社 流体控制阀
JP6481155B2 (ja) * 2014-11-25 2019-03-13 株式会社テージーケー 電動弁
US9702474B1 (en) * 2015-06-12 2017-07-11 Richard Mu Latch mechanism for a valve actuator housing
US10288122B2 (en) * 2016-02-19 2019-05-14 Honeywell International Inc. HVAC actuator assembly
DE102016206272A1 (de) * 2016-04-14 2017-10-19 Robert Bosch Gmbh Bypassventil und Expandereinheit mit einem Bypassventil
DE102016013492A1 (de) * 2016-11-11 2018-05-17 Hanon Systems Expansions- und Absperrventil
FR3074872B1 (fr) * 2017-12-08 2019-11-01 Moving Magnet Technologies Vanne de reglage compacte
EP3696454A1 (fr) * 2019-02-14 2020-08-19 TGK CO., Ltd. Vanne motorisée
US10948099B2 (en) * 2019-02-14 2021-03-16 Tgk Co., Ltd. Motor operated valve

Also Published As

Publication number Publication date
EP3948109A1 (fr) 2022-02-09
CN113574333B (zh) 2023-05-05
CN113574333A (zh) 2021-10-29
US20220170676A1 (en) 2022-06-02
WO2020193538A1 (fr) 2020-10-01

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