WO2024252031A1 - Compresseur de fluide frigorigène - Google Patents

Compresseur de fluide frigorigène Download PDF

Info

Publication number
WO2024252031A1
WO2024252031A1 PCT/EP2024/065985 EP2024065985W WO2024252031A1 WO 2024252031 A1 WO2024252031 A1 WO 2024252031A1 EP 2024065985 W EP2024065985 W EP 2024065985W WO 2024252031 A1 WO2024252031 A1 WO 2024252031A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder
valve plate
cylinder housing
refrigerant compressor
shoulder
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.)
Ceased
Application number
PCT/EP2024/065985
Other languages
English (en)
Inventor
Michaela Kohl
Water BRABEK
Gunther ZIPP
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.)
Secop Austria GmbH
Original Assignee
Nidec Global Appliance Austria 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 Nidec Global Appliance Austria GmbH filed Critical Nidec Global Appliance Austria GmbH
Publication of WO2024252031A1 publication Critical patent/WO2024252031A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/122—Cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/126—Cylinder liners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves

Definitions

  • the invention relates to a refrigerant compressor with a compressor housing in which a refrigerantcompressing compression unit is arranged .
  • the compression unit comprises a piston-cylinder unit that compresses the refrigerant , and the cylinder housing is closed by a valve plate .
  • EP 1 864 021 Al discloses a design as described above with a valve plate that is fixed to the cylinder housing by means of a clamping element .
  • the clamping element encircles the valve plate and is connected to the outside of the cylinder housing at the height of the cylinder in the axial direction by engaging in a reces s in the cylinder housing . This necessitates a complex construction of the clamping element , particularly because the clamping element is also designed to clampingly attach a suction channel and a pressure channel to the valve plate .
  • valve plate is inserted into a receiving recess of the cylinder housing, and a pressing element presses the valve plate against the cylinder housing in the direction of the cylinder, a shoulder is provided that is firmly connected to the cylinder housing away from the cylinder in the axial direction, and the pressing element is arranged and pre-tensioned in the axial direction between the valve plate and the shoulder .
  • the arrangement of the pressing element in the axial direction between the valve plate and the shoulder achieves a simple construction in which the individual components can be stacked one after another on the cylinder housing .
  • the pressing element does not need to be specially adapted in shape , but standard components can be used, and the valve plate can still be pressed sufficiently firmly onto the cylinder housing .
  • the cylinder housing no longer needs to have recesses at the height of the cylinder, as the shoulder is arranged in the axial direction above the cylinder . This results in a particularly simple yet stable design .
  • the pressing element no longer needs to have arms or other connecting elements to connect to the cylinder housing but can rest directly against the shoulder .
  • in the axial direction it is meant the axial direction of the receiving recess . This is usually also coaxial with the cylinder, in which case the axial direction corresponds to the axis of the cylinder .
  • the shoulder is not movable relative to the cylinder housing in the axial direction, meaning it is not movable in the axial direction towards the cylinder either .
  • This can be achieved, for example , by inserting the element forming the shoulder into a radial recess of the cylinder housing that is matched to the shape of the element .
  • the shoulder can be formed by one or more elements that are separable from the cylinder housing . It can also be provided that the at least one element forming the shoulder is made in one piece with the cylinder housing, i . e . , part of the cylinder housing . The element forming the shoulder and/or the shoulder itself is preferably arranged in the receiving recess . The shoulder thus supports itself on the inside of the cylinder housing .
  • the insert is preferably inserted into the receiving recess and connected to the cylinder housing in the receiving recess. It thus supports itself on the inside.
  • At least one sealing element is arranged between the cylinder housing and the valve plate.
  • the pressing element and preferably also the element forming the shoulder are arranged in the receiving recess.
  • the receiving recess has at least one notch, preferably a radial notch, into which the element forming the shoulder is inserted.
  • the notch can be, for example, a groove.
  • the compressor housing is hermetically sealed.
  • the pressing element is elastic in the axial direction and is particularly preferably made of micro-alloyed steel or spring steel. This enables a simple and cost-effective design that can still effectively pretension the valve plate.
  • the pressing element has at least one disc spring and is preferably formed by at least one disc spring.
  • a disc spring is a preferably ring-shaped or disc-shaped element that acts as a mechanical spring in the axial direction. Preferably, it has the shape of a usually flat truncated cone.
  • the pressing element comprises several disc springs, which can be arranged at least partially in parallel— i . e . , in the same direction— or in series— i.e., in opposite directions . It is particularly advantageous if the pressing element has only one disc spring or is formed by only one disc spring . This is a particularly simple , cost- effective , and easy-to-assemble construction that usually provides sufficient pre-tensioning .
  • the shoulder is formed by an insert , preferably ring-shaped or ringsegment-shaped, which is inserted into a preferably radial notch of the cylinder housing and is preferably made of spring steel .
  • the insert which is fixed in the valve housing, is divided into two separate components by the pressing element . This allows for simpler assembly and the use of standard components .
  • the notch can, for example , be a groove .
  • the notch is preferably arranged in the receiving recess . Such an insert can be easily placed on the disc spring after its arrangement and brought into the intended position relative to the cylinder housing through compression .
  • valve plate can also fit into the receiving position when reversed, i . e . , when it is inserted such that the surface originally facing the cylinder now faces away from the cylinder .
  • the pressing element presses the valve plate against the cylinder housing with a force of at least 1500 N, preferably at least 2000 N, and particularly preferably at least 2500 N in the direction of the cylinder .
  • the pressing element has at least one positioning element that engages with a corresponding positioning element of a channel component .
  • Such positioning elements assist in assembling the channel components in the correct position with the cylinder housing .
  • the pressing element only needs to be brought into the correct position relative to the cylinder housing once , and the subsequent arrangement of one or more channel components is then easily possible , as they are indicated and/or determined by the positioning elements .
  • Positioning elements can include , for example , tongues for engaging in corresponding recesses or holders .
  • the positioning elements can also include appropriate recesses or holders .
  • the rotational position of the pressing element relative to the cylinder housing is fixed, and particularly preferably that the rotational position is determined by the element forming the shoulder .
  • This determination can be achieved, for example , by matching the shape of the pressing element with the shape of the cylinder housing, and/or through a force fit via the shoulder .
  • the valve plate has at least one pressure opening and at least one suction opening . This is particularly useful as the valve plate is easy to process .
  • the pressure opening has a pressure valve and/or the suction opening has a suction valve . Through this suction valve , coolant can be drawn into the interior of the cylinder, where it is compressed by the piston and expelled through the pressure valve from the interior of the cylinder into a pressure channel .
  • a pressure channel connects to the pressure opening outside the cylinder and a suction channel connects to the suction opening out side the cylinder, and preferably the pressure channel is formed by a first channel component and/or the suction channel is formed by a second channel component . It may be provided that the first and second channel components have connecting elements for connecting to each other . This allows the channel components to be connected to each other and then connected to the cylinder housing together in one step .
  • the pressing element has at least one first positioning element that engages with a corresponding positioning element of the first channel component , and at least one second positioning element that engages with a corresponding positioning element of the second channel component . It may also be provided that the pressing element has at least one first positioning element that engages with a corresponding positioning element of the first channel component and another channel component is rotatably connected to the first channel component about the cylinder axis . This allows the rotational position of both channel components relative to the cylinder housing to be adjusted .
  • At least one channel component is attached to the cylinder housing with at least one , preferably Y-shaped, clamp, wherein the clamp is connected to the cylinder housing via at least one locking element .
  • the cylinder housing has at least one undercut into which the locking element can engage . This undercut can be formed, for example , by a groove on the cylinder housing .
  • FIG. 1 is a top view of a compression unit of a refrigerant compressor according to the present invention in a first embodiment ;
  • Fig . 2 is a partial sectional view of the compression unit along line A - A in Fig . 1 ;
  • Fig . 3 shows an enlarged section B from Fig . 2 ;
  • Fig . 4 is an exploded view of the compression unit of Figs . 1 to 3 .
  • the embodiment shown in the figures discloses a compression unit 1 of a refrigerant compressor according to the present invention, which comprises a piston-cylinder unit with a cylinder housing 2 .
  • the cylinder 5 has a cylinder axis Z along which the cylinder 5 extends and along which the piston, not shown, performs its up and down movements .
  • a receiving recess 3 is provided, which has an axis coaxial with the cylinder axis Z .
  • a valve plate 4 is inserted in this receiving recess 3 .
  • the receiving recess 3 has a substantially cylindrical shape .
  • the receiving recess 3 has a radial shoulder on which the valve plate 4 rests in the direction of the cylinder 5 . This prevents further movement of the valve plate 4 towards the cylinder 5 and is advantageous for other embodiments as well .
  • at least one sealing element 13 in the form of a sealing ring is arranged between the radial shoulder and the valve plate 4 .
  • a pressing element 6 is arranged, which is designed as a disc spring and is arranged in another recess 3a .
  • the insert 12 designed as an internal locking ring, has a ring segment shape . It is inserted into a radially executed notch 8 , which is designed as a groove and prevents the movement of the internal locking ring in the axial direction away from the cylinder 5 . Movement in the axial direction towards the cylinder 5 is only possible to a limited extent , but is in any case limited by the preload .
  • the internal locking ring can be inserted into the notch 8 by compressing and thereby bringing its two circumferential ends closer together .
  • the pressing element 6 is arranged in the axial direction between the valve plate 4 and the shoulder 7 and is elastically deformed by them in the axial direction .
  • the pressing element 6 presses the valve plate 4 with approximately 2 , 000 N in the axial direction into the receiving recess 3 .
  • a significant advantage of this construction is that the axial force is distributed very evenly in the circumferential direction, ensuring reliable sealing .
  • the valve plate 4 has a pressure opening 9 and a suction opening 10 , which can be closed by a suction valve or pressure valve , not shown here .
  • the pressing element 6 has two positioning elements 11 in the form of radially inward-directed tongues . They are arranged on the inner diameter of the pressing element 6 and serve to engage with channel components 18 , 19 .
  • a channel component 18 has two corresponding positioning elements in the form of notches into which the tongues engage .
  • the first and second channel components 18 , 19 are connected to each other via a plug connection .
  • a bearing housing 14 serves to accommodate the crankshaft bearings , not shown .
  • the suction unit 18 and the pressure unit 19 are pressed onto the valve plate 4 and secured by a clamp 20 , which is also supported on the outer groove 17 of the cylinder housing 2 by means of three locking elements 22 . Fig .
  • the clamp 20 presses the first channel component 18 , designed as a suction unit , and the second channel component 19 , designed as a pressure unit , together with the positioning unit 21 for positioning relative to the cylinder housing 2 , onto the cylinder housing 2 and the valve plate 4 lying thereon . Due to the independent attachment and preloading of the valve plate 4 via the disc spring serving as the pressing element 6 , the holding forces applied by the clamp 20 can be adjusted to the connection between the valve plate 4 and the suction unit 18 and the pressure unit 19 .
  • the receiving recess 3 features a radial recess 23 , positioned at the level of the valve plate 4 . Within this recess , a radial extension of the valve plate 4 is inserted, which in Fig . 4 is obscured by the compression spring and thus not visible . The engagement of this extension into the radial recess 23 ensures that the valve plate 4 can only be positioned in a specific rotational orientation relative to the cylinder housing 2 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

Le compresseur de fluide frigorigène comprend un carter de compresseur dans lequel est disposée une unité de compression de fluide frigorigène (1), l'unité de compression comportant une unité piston-cylindre de compression de fluide frigorigène, dont le logement de cylindre (2) est fermé au moyen d'une plaque porte-soupape (4), ladite plaque porte-soupape étant insérée dans un évidement de réception (3) du carter de cylindre et un élément de pression (6) pressant la plaque porte-soupape par rapport au carter de cylindre dans la direction du cylindre, un élément inséré (12) présentant un épaulement (7) est prévu qui est solidement relié au carter de cylindre, et l'élément de pression est agencé et pressé dans la direction axiale entre la plaque porte-soupape et l'épaulement, l'élément de pression comprenant au moins un élément de positionnement (11) qui vient en prise avec un élément de positionnement correspondant d'un élément constitutif de canal (18, 19).
PCT/EP2024/065985 2023-06-09 2024-06-10 Compresseur de fluide frigorigène Ceased WO2024252031A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50454/2023 2023-06-09
AT504542023 2023-06-09

Publications (1)

Publication Number Publication Date
WO2024252031A1 true WO2024252031A1 (fr) 2024-12-12

Family

ID=91469867

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/065985 Ceased WO2024252031A1 (fr) 2023-06-09 2024-06-10 Compresseur de fluide frigorigène

Country Status (1)

Country Link
WO (1) WO2024252031A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3021995A (en) 1958-01-06 1962-02-20 Trane Co Compressor
EP1864021A1 (fr) 2005-03-31 2007-12-12 ACC Austria GmbH Compresseur de fluide frigorigene
EP1888918A1 (fr) 2005-03-31 2008-02-20 ACC Austria GmbH Compresseur de fluide frigorigene
US9605666B2 (en) * 2000-10-17 2017-03-28 Fisher & Paykel Appliances Limited Linear compressor
EP4170162A1 (fr) * 2021-10-25 2023-04-26 Secop GmbH Compresseur de réfrigérant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3021995A (en) 1958-01-06 1962-02-20 Trane Co Compressor
US9605666B2 (en) * 2000-10-17 2017-03-28 Fisher & Paykel Appliances Limited Linear compressor
EP1864021A1 (fr) 2005-03-31 2007-12-12 ACC Austria GmbH Compresseur de fluide frigorigene
EP1888918A1 (fr) 2005-03-31 2008-02-20 ACC Austria GmbH Compresseur de fluide frigorigene
EP4170162A1 (fr) * 2021-10-25 2023-04-26 Secop GmbH Compresseur de réfrigérant

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