EP3714163B1 - Compresseur - Google Patents

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Publication number
EP3714163B1
EP3714163B1 EP18827065.6A EP18827065A EP3714163B1 EP 3714163 B1 EP3714163 B1 EP 3714163B1 EP 18827065 A EP18827065 A EP 18827065A EP 3714163 B1 EP3714163 B1 EP 3714163B1
Authority
EP
European Patent Office
Prior art keywords
compressor
spring
receptacle
spring element
lubricant
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
EP18827065.6A
Other languages
German (de)
English (en)
Other versions
EP3714163A1 (fr
Inventor
Hans Peter SCHÖGLER
Reinhard Resch
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 GmbH
Original Assignee
Secop 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 Secop GmbH filed Critical Secop GmbH
Publication of EP3714163A1 publication Critical patent/EP3714163A1/fr
Application granted granted Critical
Publication of EP3714163B1 publication Critical patent/EP3714163B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B39/127—Mounting of a cylinder block in a casing
    • 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
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0044—Pulsation and noise damping means with vibration damping supports
    • 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
    • F04B39/02—Lubrication
    • F04B39/0284—Constructional details, e.g. reservoirs in the casing

Definitions

  • the lubricant sump is formed in the interior of the housing, more precisely in the bottom area of the interior of the housing.
  • a crankshaft which is driven by the motor of the compressor-motor unit for the purpose of compressing refrigerant and projects into the lubricant sump in sections, lubricant is conveyed in a known manner from the lubricant sump in the direction of the compressor-motor unit including a crank pin of the crankshaft, a connecting rod that creates an operative connection between the piston and the crank pin, a bearing in which the crankshaft is mounted, and / or a cylinder wall of the To lubricate the cylinder.
  • the lubricant then flows off the compressor-motor unit and is thus fed back to the lubricant sump.
  • the receptacle according to the invention which receives the respectively assigned spring element for the purpose of connecting it to the compressor housing, in particular to the storage area of the compressor housing, makes it possible to increase the level of the lubricant in each case in the area of the spring element without the level of the To have to increase the total lubricant sump.
  • the lubricant present inside the housing during operation can thus be used to dampen the spring elements.
  • jacket element of the receptacle which jacket element at least largely prevents lubricant that has collected in the receptacle volume of the receptacle from flowing out of the receptacle into the lubricant sump.
  • An outflow of lubricant from the receptacle is "largely” prevented in this sense if the degree of tightness of the receptacle ensures that any outflow of lubricant from the receptacle, for example through porosities in the wall element, is not greater than the steady inflow of lubricant into the receptacle open in the direction of the compressor-motor unit, which inflow is caused by the lubricant that splashes around inside the housing during operation of the compressor and flows off from the compressor-motor unit.
  • So lubricant which drips or runs off from the compressor-motor unit of the compressor and collects in the receiving volume of the receptacle, initially remains inside the receptacle and is prevented by the casing element of the receptacle from leaving the receptacle volume in the direction of the lubricant sump . Since the receptacle protrudes above the sump height of the lubricant sump with its jacket element in the vertical direction, the level of the lubricant, based in each case on a common reference point, is significantly higher within the receptacle volume of the receptacle than in the lubricant sump.
  • This increased level of the viscous lubricant (and oil) in the area of the spring elements ensures that the damping effect of the lubricant described at the beginning can be optimally used, since a much larger height section of the spring elements can be lubricated than with known compressors, in which the height of the lubricant sump is limited by the factors also mentioned at the beginning, in particular by the arrangement of the compressor-motor unit. In this way, in the event of deflection, compression or expansion of the spring elements, optimal damping of the spring elements can be achieved and the noise emission caused by the vibration transmission of the spring elements can be significantly reduced.
  • any collisions between the receptacle and the compressor-motor unit more precisely between the spring holder of the receptacle and a further spring holder of the compressor-motor unit, which further spring holder is used to fasten the respective spring element to the compressor-motor unit and in sections protrudes into the spring element, dampened by a film of lubricant located between these parts.
  • Both the first spring coils and the further spring coils of the spring element are in an operating state of the compressor in the receiving volume of the receptacle, in which operating state only the weight of the compressor-motor unit acts on the at least one spring element.
  • Radial spacing of the spring coils from the casing element denotes that distance which is normal to the height direction and extends between the spring coils, which are inside the receptacle and thus surrounded by the casing element, and the casing element.
  • a minimum clear inside diameter of the casing element is greater than a maximum outside diameter of the spring element, so that all spring coils of the respective spring element arranged within the receiving volume are radially spaced from the casing element of the respective receptacle.
  • the spring element can be surrounded by lubricant in the area of its entire height section extending within the receptacle.
  • the first spring windings - and thus all spring windings arranged within the receptacle - of the respective spring element are also spaced apart from the jacket element. The movement of the spring is thus not hindered by the casing element, at least in the case of smaller amplitudes. Collisions between the spring coils and the casing element of the receptacle are largely avoided in compressors of this embodiment. In particular in connection with receptacles that are rigid, for example made of metal, a significant noise reduction can be achieved in this way.
  • At least the first three spring coils (21, 22) preferably 50% of the spring coils, particularly preferably more than 70% of the spring coils, of the spring element lie within the receiving volume (32) of the respective receptacle (15,16,17,18).
  • the lubricant level in the receiving volume is increased in such a way that even in the case of complete compression of the spring element, no spring coils of the spring element outside the receptacle - and thus outside the lubricant - collide with one another. All collisions that occur between spring coils are thus dampened by the lubricant present in the receptacle. This results in an additional reduction in noise emissions.
  • At least two of the spring coils of the respective spring element lying within the receiving volume are spaced apart from one another, so that a spring path extends between them.
  • the spring element is particularly preferably arranged at least up to and including a transition area between active and passive spring coils within the receiving volume.
  • the spring coils that are not spaced apart are interpreted as passive and the spring coils that are spaced apart from one another as active.
  • the receptacle has a pin-like spring holder protruding vertically from the receptacle, via which spring holder the spring element is connected with its inside with a force fit with the receptacle.
  • the spring holder of the receptacle which is usually designed as a fastening bolt with a diameter that tapers in the vertical direction, enables the spring element to be fastened to the receptacle - and thus to the storage area - in a particularly simple and at the same time reliable manner.
  • the spring element is designed as a helical spring
  • a particularly simple and reliable fixation of the spring element on the receptacle can be achieved by pushing the helical spring onto the spring holder, provided the diameter of the spring holder is matched to an inside diameter of the helical spring.
  • the spring holder can be made in one piece with a base element and the jacket element of the receptacle and a hollow inner section can be turned up on a raised portion of the compressor housing arranged in the base area in order to fasten the receptacle to the compressor housing.
  • the receptacle can have a recess in its base element formed in one piece with the casing element, through which recess a pin-like part of the compressor housing protruding from the base area in the vertical direction into the Admission protrudes into it.
  • the recess is matched to the protruding part of the compressor housing in such a way that leakage of lubricant from the receptacle in the area in which the protruding part and the recess contact each other is not possible or largely prevented.
  • the base element can be formed by the bearing area of the compressor housing.
  • Another embodiment of the compressor according to the invention is particularly preferred, in which embodiment the jacket element projects beyond the spring holder of the receptacle in the vertical direction.
  • the receiving volume of the receptacle for lubricant is maximized, so that the receiving volume can accommodate several spring coils.
  • the casing element of the receptacle is designed to be elastic.
  • At least the jacket element, but preferably the entire receptacle is made from an elastomer, particularly preferably from a fluoroelastomer. This material leads to an increased service life of the receptacle, which is permanently exposed to particularly high temperatures and the lubricant itself during the operating state of the compressor.
  • a clear inside diameter of the jacket element increases monotonically when viewed in the height direction, namely the clear inside diameter increases in the sense of a monotonically increasing function of the height direction.
  • this measure further increases the receiving volume of the receptacle, in which lubricant can collect and contribute to the damping of the spring element.
  • this takes into account the fact that the amplitude of the deflection of the spring element increases with the height direction. It is thus ensured that the spring element does not contact the jacket element even in the event of extreme deflections of the spring element, for example during the start / stop process of the compressor-motor unit of the compressor. This in turn is accompanied by the reduction of that proportion of the noise emission which is due to the collision between the deflected spring element and the casing element of the receptacle, made for example of metal.
  • the casing element of the receptacle surrounding the spring element and possibly the pin holder in the form of a sleeve is curved sharply outward at its end region facing away from the compressor housing.
  • the jacket element viewed in a cross-section running parallel to the vertical direction, at least in sections has the shape of a circular arc, with a to This circular arc corresponding circle has its center outside of the recording.
  • the jacket element has a first height section and a second height section, the first height section and the second height section each extending in the height direction, with a first clear inner diameter of the jacket element in the area of the first height section is constant and wherein the second height section of the jacket element has an enlarged diameter.
  • Fig. 1 shows a refrigerant compressor in a sectional view, the section running through the compressor housing 1 of the compressor.
  • a compressor-motor unit 4 is arranged, which initially comprises a motor 8 and a cylinder 5 for compressing refrigerant, the refrigerant being able to flow into the housing interior 2 via an inlet in the compressor housing 1.
  • a crankshaft 7 driven by the engine 8 is in operative connection via a connecting rod with a piston 6 arranged in the cylinder 5, so that the rotation of the crankshaft 7 leads to a periodic linear movement of the piston 6 between two dead centers of the cylinder 5.
  • the receptacle 15 is made in one piece and comprises a base element 28 contacting the storage area 34, a casing element 20 adjoining the base element 28 and a spring holder 19 protruding in a height direction 23 from the base element 28 turned up on an elevation 29 of the compressor housing 1, whereby the receptacle 15 is connected to the compressor housing 1 with a force fit.
  • the casing element 20 surrounds the spring holder 19 and a receiving volume 32 of the receptacle 15 which is formed between the spring holder 19 and the casing element 20 on the circumference or in the form of a sleeve.
  • the jacket element 20 protrudes beyond the spring holder 19 in the height direction 23 (see also Fig. 2 ).
  • Fig. 2 is a detailed view of the receptacle 15. It can be seen that a level of the lubricant 9 within the receiving volume 32 of the receptacle 15 is significantly higher than in a floor area of the compressor housing 1, where a lubricant sump 30 is formed during normal operation of the refrigerant compressor however, the maximum sump height 14 is limited by the position of the compressor-motor unit 4. This is achieved according to the invention in that the jacket element 20 of the receptacle 15 projects beyond the sump height 14 of the lubricant sump 30 in the height direction 23.
  • the spring element 10 is pushed onto the spring holder 19 of the receptacle and connected to it with a force fit.
  • the spring element 10 is connected to the compressor-motor unit 4 via a further spring holder 33 of the compressor-motor unit 4.
  • the jacket element 20 surrounds the spring holder 19 of the receptacle 15 in the shape of a sleeve and has the same clear inside diameter viewed over its entire height.
  • all spring windings of the spring element 10 which is designed as a helical spring, contact the jacket element 20, which are arranged within the receptacle 15.
  • this noise reduction effect is particularly pronounced , since this material has the flexibility required for this and also withstands the high temperatures and constant contact with lubricant 9 over the long term.
  • first spring windings 21 of the spring element 10 - here: the first and the second winding - with the jacket element 20 of the in Fig. 3 depicted receptacle 15 in contact, so that further spring windings 22 of the spring element 10, which continue from the bearing area 34 of the compressor housing 1 are removed than the first spring coils 21, are radially spaced from the casing element 20 of the receptacle 15.
  • Radial spacing within the meaning of the present invention is a normal to the height direction, i.e. the direction in which the spring element 10 and possibly the spring holder 19 protrudes from the receptacle 15, between a spring coil arranged within the receptacle volume 32 and the one at the same height to be understood with the respective spring coil arranged portion of the jacket element 20.
  • the spacing of the further spring windings 22 - here: the third, fourth and fifth windings - from the casing element 20 leads to an additional reduction in the overall noise emission of the refrigerant compressor, since noises are caused by the collision of the spring element 10 with the casing element 20 can be avoided as far as possible.
  • the jacket element 20 of the receptacles 15 from Fig. 3 has a first height section 25 arranged to run in height direction 23 and a second height section 26 also arranged to run in height direction 23.
  • a first clear inner diameter 27 of the sleeve-shaped casing element 20 is constant over the entire first height section 25.
  • the jacket element 20 has a diameter enlargement 24 running continuously from the first clear inner diameter 27 to a maximum clear inner diameter 31 reached at the upper end of the jacket element 20. This ensures that the spring element 10 cannot collide with the jacket element 20 even with high deflections.
  • Fig. 4 shows a plan view of a bottom area of the compressor housing 1.
  • the receptacles 15, 16, 17, 18 are arranged in each of a bearing area 34 of the compressor housing 1.
  • Each receptacle 15, 16, 17, 18 holds a spring element 10, 11, 12, 13 arranged.
  • the receptacles 15, 16, 17, 18, which can be designed according to the embodiment variants described above, and the spring elements 10, 11, 12, 13 arranged therein form a bearing system 3 for the compressor-motor unit 4 of the compressor.

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

Claims (11)

  1. Compresseur pour comprimer un réfrigérant circulant dans un circuit de réfrigération, comprenant
    - un corps de compresseur (1) renfermant un intérieur de corps (2) du compresseur,
    - une unité moteur-compresseur (4) comprenant au moins un piston (6) se déplaçant dans un cylindre (5) ainsi qu'un moteur (8),
    - au moins un élément ressort (10, 11, 12, 13), de préférence plusieurs éléments ressort (10, 11, 12, 13), par l'intermédiaire desquels l'unité moteur-compresseur (4) est reliée de manière élastique à une zone de support (34) du corps de compresseur (1), de préférence à une zone de base du corps de compresseur (1), ainsi que
    - au moins un réceptacle (15, 16, 17, 18) disposé sur la zone de support pour ledit au moins un élément ressort (10, 11, 12, 13), de préférence un réceptacle (15, 16, 17, 18) pour chaque fois un élément ressort (10, 11, 12, 13), l'élément ressort respectif (10, 11, 12, 13) étant reçu dans le réceptacle (15, 16, 17, 18),
    - dans lequel le réceptacle (15, 16, 17, 18) présente un élément de base (28) qui est relié à la zone de support (34) et duquel l'élément ressort (10, 11, 12, 13) fait saillie dans une direction de la hauteur (23), un élément d'enveloppe (20), lequel élément d'enveloppe (20) entoure l'élément ressort (10, 11, 12, 13) à la manière d'un manchon et présente un volume de réception (32) délimité par l'élément de base (28) et l'élément d'enveloppe (20), afin de permettre une accumulation de lubrifiant (9) dans le volume de réception (32), de sorte qu'une partie de l'élément ressort (10, 11, 12, 13) disposée dans le volume de réception (32) est enveloppée de lubrifiant (9) dans l'état de fonctionnement du compresseur,
    caractérisé en ce que
    l'élément d'enveloppe (20) fait saillie dans la direction de la hauteur (23) au-delà d'une hauteur de carter (14) d'un carter de lubrifiant (30), lequel carter de lubrifiant (30) est formé dans l'intérieur de corps (2) dans l'état de fonctionnement du compresseur.
  2. Compresseur selon la revendication 1, caractérisé en ce qu'un diamètre intérieur libre minimal de l'élément d'enveloppe (20) est supérieur à un diamètre extérieur maximal de l'élément ressort (10, 11, 12, 13).
  3. Compresseur selon la revendication 1 ou 2, caractérisé en ce que, dans un état de fonctionnement du compresseur, dans lequel état de fonctionnement ledit au moins un élément ressort (10, 11, 12, 13) est chargé uniquement par le poids de l'unité moteur-compresseur (4), au moins les trois premières spires de ressort (21, 22), de préférence 50 % des spires de ressort (21, 22), de manière particulièrement préférée plus de 70 % des spires de ressort (21, 22) de l'élément ressort (10, 11, 12, 13) sont situées à l'intérieur du volume de réception (32) du réceptacle respectif (15, 16, 17, 18).
  4. Compresseur selon la revendication 3, caractérisé en ce qu'une course de ressort s'étend au moins entre deux des spires de ressort (21, 22) de l'élément ressort respectif (10, 11, 12, 13) situées à l'intérieur du volume de réception (32) dans ledit état de fonctionnement du compresseur.
  5. Compresseur selon l'une des revendications 1 à 4, caractérisé en ce que le réceptacle (15, 16, 17, 18) présente un support de ressort (19) en forme de tige faisant saillie du réceptacle (15, 16, 17, 18) dans la direction de la hauteur (23), par lequel support de ressort (19) l'élément ressort (10, 11, 12, 13) est relié par son côté intérieur au réceptacle (15, 16, 17, 18) par une liaison de force.
  6. Compresseur selon la revendication 5, caractérisé en ce que l'élément d'enveloppe (20) fait saillie au-delà du support de ressort (19) du réceptacle (15, 16, 17, 18) dans la direction de la hauteur (23).
  7. Compresseur selon l'une des revendications 1 à 6, caractérisé en ce que l'élément d'enveloppe (20) du réceptacle (15, 16, 17, 18) est réalisé de manière élastique.
  8. Compresseur selon les revendications 1 à 7, caractérisé en ce qu'au moins l'élément d'enveloppe (20), mais de préférence l'ensemble du réceptacle (15, 16, 17, 18), est constitué d'un élastomère, de manière particulièrement préférée d'un fluoroélastomère.
  9. Compresseur selon l'une des revendications 1 à 8, caractérisé en ce qu'un diamètre intérieur libre de l'élément d'enveloppe (20), vu dans la direction de la hauteur (23), augmente de manière monotone.
  10. Compresseur selon la revendication 9, caractérisé en ce que l'élément d'enveloppe (20) présente une première partie de hauteur (25) et une seconde partie de hauteur (26), la première partie de hauteur (25) et la seconde partie de hauteur (26) s'étendant chacune dans la direction de la hauteur (23), un premier diamètre intérieur libre (27) de l'élément d'enveloppe (20) étant constant dans la zone de la première partie de hauteur (25) et la seconde partie de hauteur (26) de l'élément d'enveloppe (20) présentant un élargissement de diamètre (24).
  11. Compresseur selon la revendication 9 ou 10, caractérisé en ce que, vu dans une section transversale parallèle à la direction de la hauteur (23), l'élément d'enveloppe (20) présente, au moins sur certaines parties, la forme d'un arc de cercle, un cercle correspondant à cet arc de cercle ayant son centre à l'extérieur du réceptacle (15, 16, 17, 18).
EP18827065.6A 2017-12-22 2018-12-19 Compresseur Active EP3714163B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17210207.1A EP3502473A1 (fr) 2017-12-22 2017-12-22 Compresseur
PCT/EP2018/085960 WO2019121993A1 (fr) 2017-12-22 2018-12-19 Compresseur

Publications (2)

Publication Number Publication Date
EP3714163A1 EP3714163A1 (fr) 2020-09-30
EP3714163B1 true EP3714163B1 (fr) 2021-11-24

Family

ID=60856887

Family Applications (2)

Application Number Title Priority Date Filing Date
EP17210207.1A Withdrawn EP3502473A1 (fr) 2017-12-22 2017-12-22 Compresseur
EP18827065.6A Active EP3714163B1 (fr) 2017-12-22 2018-12-19 Compresseur

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP17210207.1A Withdrawn EP3502473A1 (fr) 2017-12-22 2017-12-22 Compresseur

Country Status (4)

Country Link
US (1) US20210363982A1 (fr)
EP (2) EP3502473A1 (fr)
CN (1) CN111868381A (fr)
WO (1) WO2019121993A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT15707U1 (de) * 2016-11-18 2018-04-15 Secop Gmbh Kältemittelkompressor
KR102414137B1 (ko) 2020-08-20 2022-06-28 엘지전자 주식회사 밀폐형 압축기

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977043A (en) * 1958-12-11 1961-03-28 Gen Electric Hermetic compressor unit mounting means
US3246836A (en) * 1964-01-10 1966-04-19 Westinghouse Electric Corp Spring systems for refrigerant compressors
US3857652A (en) * 1974-02-01 1974-12-31 Westinghouse Electric Corp Internal liquid refrigerant trap for hermetic compressors
US4236874A (en) * 1979-03-02 1980-12-02 Westinghouse Electric Corp. Dual capacity compressor with reversible motor and controls arrangement therefor
US4487555A (en) * 1981-02-13 1984-12-11 Mitsubishi Denki Kabushiki Kaisha Hermetic motor compressor
IT1161497B (it) * 1983-07-12 1987-03-18 Aspera Spa Dispositivo di sospensione per motocompressori ermetici di frigoriferi e simili
BRPI0904172A2 (pt) * 2009-10-27 2011-06-28 Whirlpool Sa arranjo de montagem das molas de suspensão em um compressor de refrigeração
WO2013098126A1 (fr) * 2011-12-27 2013-07-04 Arcelik Anonim Sirketi Compresseur comprenant un élément d'aspiration d'huile
AT14651U1 (de) * 2015-05-22 2016-03-15 Secop Gmbh Kältemittelverdichter

Also Published As

Publication number Publication date
EP3502473A1 (fr) 2019-06-26
WO2019121993A1 (fr) 2019-06-27
US20210363982A1 (en) 2021-11-25
EP3714163A1 (fr) 2020-09-30
CN111868381A (zh) 2020-10-30

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