EP1363088A1 - Sammler Trockner - Google Patents

Sammler Trockner Download PDF

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Publication number
EP1363088A1
EP1363088A1 EP02010459A EP02010459A EP1363088A1 EP 1363088 A1 EP1363088 A1 EP 1363088A1 EP 02010459 A EP02010459 A EP 02010459A EP 02010459 A EP02010459 A EP 02010459A EP 1363088 A1 EP1363088 A1 EP 1363088A1
Authority
EP
European Patent Office
Prior art keywords
charge
casing
strainer
receiver drier
port
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.)
Granted
Application number
EP02010459A
Other languages
English (en)
French (fr)
Other versions
EP1363088B1 (de
Inventor
Michele c/oSKG Italiana S.P.A. Bernini
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.)
Finber SpA
Original Assignee
SKG Italiana SpA
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 SKG Italiana SpA filed Critical SKG Italiana SpA
Priority to AT02010459T priority Critical patent/ATE334360T1/de
Priority to DE60213371T priority patent/DE60213371T2/de
Priority to ES02010459T priority patent/ES2267894T3/es
Priority to EP02010459A priority patent/EP1363088B1/de
Publication of EP1363088A1 publication Critical patent/EP1363088A1/de
Application granted granted Critical
Publication of EP1363088B1 publication Critical patent/EP1363088B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/003—Filters
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/044—Condensers with an integrated receiver
    • F25B2339/0441—Condensers with an integrated receiver containing a drier or a filter
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0413—Refrigeration circuit bypassing means for the filter or drier
    • 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
    • F25B39/04—Condensers

Definitions

  • the invention relates to a receiver drier for an automotive air-conditioning system according to the preamble part of claim 1.
  • the receiver drier of an automotive air-conditioning system (or generally in a refrigerating system) has the task to extract any water contained in the refrigerant, to store a predetermined amount of the refrigerant during operation of the system, and to filter out impurities from the refrigerant circulating through the receiver drier.
  • the water is extracted by at least one charge of a desiccant material placed inside the casing. Impurities are caught by a filter structure.
  • the desiccant material is contained in a permeable bag placed on top of a bell-shaped strainer fixed to a free end of a central refrigerant tube.
  • the filter structure is placed in the strainer. All of the refrigerant entering the receiver drier has to pass through the desiccant material.
  • the charge of desiccant material is placed outside of the direct refrigerant flow path and occupies only a small part of the volume of the casing.
  • the charge fulfils its function, so to speak, at a static level, and does not influence the pressure drop for the refrigerant flow negatively.
  • the only pressure drop which is to be overcome by the refrigerant flow is caused by the cross-sections of the flow facilities and the filter structure.
  • the charge is directly received in the casing end closed by a port-free end part. No bag is necessary to confine the charge, however, if desired a permeable bag may be used.
  • the desiccant material can be filled in directly into the casing, before the strainer is inserted and confines the charge, preferably under light compression, in a well defined manner outside of the direct refrigerant flow path. No further labour intensive installation steps are necessary.
  • the accommodation of the desiccant charge assures that only a part of the refrigerant contained in the receiver drier will enter the charge in a static manner, even if the direct refrigerant flow is lively and strong.
  • the arrangement of the charge outside of the direct flow path reflects the recognition that the desiccant material by nature generates a very strong attraction for any water contained in the refrigerant and reliably extracts water out of the refrigerant even if the refrigerant contacts the desiccant material in a static manner only.
  • the charge is confined in an end part of the casing remote from the inlet/outlet ports. This occupies only a small part of the volume of the receiver drier. The remaining volume may desirably be used to enhance the sub-cooling effect of the receiver drier.
  • the inlet/outlet ports are commonly provided in one end part of the casing, while the deflection chamber is located with axial distance from the port-equipped end part.
  • a substantially central refrigerant tube extends from one port of the port-equipped end part into the deflection chamber.
  • the filter structure is placed at or adjacent to the free end of the refrigerant tube. The only significant flow obstacle is created by the filter structure, while the charge of desiccant material fulfils its task in a static manner.
  • the filter structure needs some support, because it is arranged separately. Expediently, the filter structure is secured to a positioning holder which may be mounted to the free end of the refrigerant tube and/or may be supported by the inner casing wall.
  • the charge of desiccant material changes its volume during operation of the system. For this reason it is expedient to hold the charge under light compression and such that it may expand or contract.
  • the strainer is placed with a slide-fit contact at the casing inner wall such that it is able to move with the charge when the charge expands or contracts.
  • a compression spring loads the strainer and compresses the charge via the strainer.
  • the compression spring is seated on the positioning holder.
  • the refrigerant tube is stabilised by an adapter part of the port-equipped end part of the receiver drier. Via the adapter part the reaction force from the positioning holder and/or the strainer is backed up by the end part of the casing.
  • a pot-shaped strainer is easy to insert into the casing and is well guided by its contact to the inner wall of the receiver drier.
  • a layer of a gap recovering material may be placed between the strainer and the charge and/or between the port-free end part and the charge.
  • the layer has to be permeable when positioned at the strainer.
  • the layer only needs to be resilient. Volume changes of the charge are taken up or compensated for by the layer. The charge remains under a relatively constant compression and, as a consequence, occupies only the minimum volume in the receiver drier.
  • the refrigerant pipe, the positioning holder and the strainer coupled to the positioning holder by the compression spring may form one prefabricated unit which can be inserted comfortably into the casing.
  • the structural unit even may be completed by the charge and/or the adapter part.
  • the receiver drier R in Fig. 1 has a substantially cylindrical, relatively slim casing 2 of aluminium or steel material.
  • the casing 2 is closed at the left end by an integrated end part 1, and is closed at the opposite, open end by an inserted and rigidly coupled end part 3.
  • End part 3 is a so-called connector head H which serves to establish fluid-tight connections with a not shown connecting structure to which the receiver drier is to be mounted.
  • the receiver drier R e.g. will operate in a position with the connector head H oriented downwardly.
  • the left end of casing 2 contains a charge D of a desiccant material.
  • the material may be filled into the casing directly from the open casing end.
  • the charge D is held in place and in contact with the casing inner wall and the end part 1 by a strainer 4.
  • the strainer 4 has the shape of a pot with a perforated pot bottom wall 9 and a circumferentially continuous guiding wall 10. Guiding wall 10 may engage the inner casing wall with a slide-fit.
  • a positioning holder 7 is installed in contact with the inner wall.
  • the holder 7 has the shape of a pot with a perforated or partly open pot bottom wall carrying a net filter structure 11 and a circumferential guiding wall 12 which may contact the casing inner wall.
  • the drier receiver R is equipped with a central longitudinally extending refrigerant tube 13 inserted by an adapter port A into port-equipped end part 3, and extending to the holder 7.
  • the holder 7 may have a central tubular projection 14 which is inserted into the free end of the refrigerant tube 13.
  • the holder 7 defines flow paths 6 for a refrigerant circulating through the receiver drier R.
  • the refrigerant enters the receiver drier R through an inlet port 15 in end part 4, the adapter part A and further through the refrigerant tube 13 from which it reaches a flow deflection chamber C commonly defined by strainer 4 and holder 7.
  • a part of the refrigerant in chamber C also enters the charge D.
  • the charge D extracts any water contained in the refrigerant.
  • From chamber C the refrigerant passes through net filter structure 11 and then into the remaining part of the casing 2 until it leaves the receiver drier R through an outlet port 16.
  • the chamber C and the remaining free space in the casing 2 provides a relatively big volume desirable for an effective sub-cooling effect of the receiver drier.
  • the connector head H as the port-equipped end part 3 is inserted into the free end of casing 2 and is rigidly coupled to casing 2 by a radial inward deformation 18, e.g. a circular crimping, of the casing wall.
  • the connection region between the connector head H and the casing 2 additionally is sealed by O-rings 17.
  • Other suitable connecting principles may be used instead.
  • a compression spring 5 is inserted between the strainer 4 and the holder 7 such that the strainer 4 is slightly pressed against the charge D.
  • the part of the refrigerant entering the charge D is indicated by an arrow 8.
  • the compression spring 5 allows the strainer 4 to move axially in case that the volume of the charge D should decrease due to a certain setting effect, or should increase for other reasons. In all operating conditions, however, the charge D may remain under a slight axial pre-load by the first strainer 4 and the compression spring 5.
  • the refrigerant tube 13, the holder 7, and strainer 4 coupled to the holder 7 by compression spring 5 may be prefabricated as a structural unit which can be inserted into the casing 2 comfortably after the charge D has been filled in.
  • the structural unit even can be pre-mounted to the connector head H such that it can be placed by one installation step when inserting the connector head H.
  • the structure as described above allows to reduce the costs to manufacture and assemble the receiver drier in comparison with conventional ones and considerably improves the system operational functionality by reducing the pressure drop for the refrigerant flow.
  • the charge D e.g. constituting a molecular sieve
  • the charge D is applied at a static level close to the upper bottom of the casing, e.g. in case of an upright operating position of the drier receiver in the system.
  • the diameter of the receiver drier tends to decrease.
  • the pressure difference of the refrigerant flow between the inlet port and the outlet port increases considerably such that the performance of the receiver drier and of the entire system may be jeopardised.
  • the filter structure is separated from the charge absorbing the water. This is not only useful for receiver driers which will be installed in a stand alone location in the system, but also for receiver driers which are integrated to or into the condenser of the system.
  • the integration into the condenser does not cause problems because the charge of desiccant material resists temperatures of up to 750°C and more when soldering the condenser and the receiver drier at the same time.
  • the quality, pearl size, volume, and the like of the charge D easily can be adapted to the demand of the customer using the receiver drier.
  • the same is true for the filter structure.
  • the port-equipped end part 3 can be secured in place also by welding or the like.
  • the receiver drier of Fig. 2 is designed similar to the receiver drier of Fig. 1.
  • the charge D of the desiccant material is received in the closed end of the casing 2 in direct contact with integrated end part 1.
  • a layer 19 of a gap recovering material is provided which is permeable for the refrigerant but not for the desiccant material and which compensates for any volume variations of the charge D.
  • the central refrigerant tube 13 is secured to end part 3 (connector head H) via adapter part A and abuts against the, in this case, bell-shaped positioning holder 7 resting on a projecting boss of strainer 4.
  • the open end of holder 7 is equipped with the net filter structure 11.
  • the chamber C is defined in part inside holder 7. In this case refrigerant tube 13 may be connected to outlet port 16.
  • the connector head H is welded to the casing 2 via adapter part A.
  • the receiver drier R of Fig. 3 is intended to be integrated with a condenser casing 20 (Fig. 4) of the system.
  • the tube-like, cylindrical casing 2 is closed at both ends by plug-shaped fixed end parts 1, 3.
  • the charge D of the desiccant material is received directly in the end of the casing 2 closed by end part 1.
  • At both ends of charge D layers 19 of a gap recovering material are provided.
  • Strainer 4 with its perforated bottom wall 9 is installed with a press-fit contact with the casing inner wall.
  • the positioning holder 7 is placed with axial distance from strainer 4 and carries the net filter structure 11.
  • the refrigerant flow deflection chamber C is defined between the strainer 4 and the holder 7.
  • inlet port 15 is formed in the casing wall 2, while the outlet port 16 is formed in the casing wall 2 about midway between the holder 7 and the other end part 3.
  • the operating position of the receiver drier R may be selected such that the charge D will be at the top.
  • the receiver drier of Fig. 3 is mounted to the side of the condenser casing 20 such that the receiver drier R is supported by the casing 20 and such that the inlet and outlet ports 15, 16 establish the necessary flow connections with the interior of the casing 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Drying Of Gases (AREA)
  • Amplifiers (AREA)
  • Gasification And Melting Of Waste (AREA)
EP02010459A 2002-05-08 2002-05-08 Sammler Trockner Expired - Lifetime EP1363088B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT02010459T ATE334360T1 (de) 2002-05-08 2002-05-08 Sammler trockner
DE60213371T DE60213371T2 (de) 2002-05-08 2002-05-08 Sammler Trockner
ES02010459T ES2267894T3 (es) 2002-05-08 2002-05-08 Recipiente desecador.
EP02010459A EP1363088B1 (de) 2002-05-08 2002-05-08 Sammler Trockner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02010459A EP1363088B1 (de) 2002-05-08 2002-05-08 Sammler Trockner

Publications (2)

Publication Number Publication Date
EP1363088A1 true EP1363088A1 (de) 2003-11-19
EP1363088B1 EP1363088B1 (de) 2006-07-26

Family

ID=29265917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02010459A Expired - Lifetime EP1363088B1 (de) 2002-05-08 2002-05-08 Sammler Trockner

Country Status (4)

Country Link
EP (1) EP1363088B1 (de)
AT (1) ATE334360T1 (de)
DE (1) DE60213371T2 (de)
ES (1) ES2267894T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9599414B2 (en) 2010-11-17 2017-03-21 Zhejiang Sanhua Automotive Components Co., Ltd Liquid reservoir

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893563A (en) * 1954-07-12 1959-07-07 Edward W Bottum Strainer
DE3601342A1 (de) * 1986-01-18 1987-07-23 Hansa Metallwerke Ag Fluessigkeitssammler
EP0276943A2 (de) * 1987-01-27 1988-08-03 Ford Motor Company Limited Sammler mit Kältemittel behandelnder Patrone für Autoklimaanlage
JPH02287066A (ja) * 1989-04-27 1990-11-27 Nippondenso Co Ltd 冷凍サイクルのための水分分離装置
US5038582A (en) * 1989-03-13 1991-08-13 Calsonic Corporation Liquid receiver
JPH0743049A (ja) * 1993-07-30 1995-02-10 Daikin Ind Ltd 冷凍装置用冷媒乾燥装置
EP0816779A1 (de) * 1995-03-17 1998-01-07 Hitachi, Ltd. Klimaanlage und feuchtigkeitsentfernvorrichtung zur anwendung bei der klimaanlage
JPH1073346A (ja) * 1996-08-30 1998-03-17 Mitsubishi Heavy Ind Ltd ヒートポンプ用高圧レシーバ
US5910165A (en) * 1996-07-31 1999-06-08 Parker-Hannifin Corporation Receiver/dryer and method of assembly

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893563A (en) * 1954-07-12 1959-07-07 Edward W Bottum Strainer
DE3601342A1 (de) * 1986-01-18 1987-07-23 Hansa Metallwerke Ag Fluessigkeitssammler
EP0276943A2 (de) * 1987-01-27 1988-08-03 Ford Motor Company Limited Sammler mit Kältemittel behandelnder Patrone für Autoklimaanlage
US5038582A (en) * 1989-03-13 1991-08-13 Calsonic Corporation Liquid receiver
JPH02287066A (ja) * 1989-04-27 1990-11-27 Nippondenso Co Ltd 冷凍サイクルのための水分分離装置
JPH0743049A (ja) * 1993-07-30 1995-02-10 Daikin Ind Ltd 冷凍装置用冷媒乾燥装置
EP0816779A1 (de) * 1995-03-17 1998-01-07 Hitachi, Ltd. Klimaanlage und feuchtigkeitsentfernvorrichtung zur anwendung bei der klimaanlage
US5910165A (en) * 1996-07-31 1999-06-08 Parker-Hannifin Corporation Receiver/dryer and method of assembly
JPH1073346A (ja) * 1996-08-30 1998-03-17 Mitsubishi Heavy Ind Ltd ヒートポンプ用高圧レシーバ

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 057 (M - 1080) 12 February 1991 (1991-02-12) *
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 05 30 June 1995 (1995-06-30) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 08 30 June 1998 (1998-06-30) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9599414B2 (en) 2010-11-17 2017-03-21 Zhejiang Sanhua Automotive Components Co., Ltd Liquid reservoir

Also Published As

Publication number Publication date
EP1363088B1 (de) 2006-07-26
DE60213371D1 (de) 2006-09-07
ES2267894T3 (es) 2007-03-16
DE60213371T2 (de) 2006-11-23
ATE334360T1 (de) 2006-08-15

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