WO2002066911A1 - Condenser for a refrigeration appliance - Google Patents

Condenser for a refrigeration appliance Download PDF

Info

Publication number
WO2002066911A1
WO2002066911A1 PCT/BR2002/000023 BR0200023W WO02066911A1 WO 2002066911 A1 WO2002066911 A1 WO 2002066911A1 BR 0200023 W BR0200023 W BR 0200023W WO 02066911 A1 WO02066911 A1 WO 02066911A1
Authority
WO
WIPO (PCT)
Prior art keywords
condenser
cabinet
rear wall
hermetic shell
tubular extension
Prior art date
Application number
PCT/BR2002/000023
Other languages
French (fr)
Inventor
Luiz Antonio Diemer Lopes
Original Assignee
Multibrás S.A. Eletrodomésticos
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 Multibrás S.A. Eletrodomésticos filed Critical Multibrás S.A. Eletrodomésticos
Publication of WO2002066911A1 publication Critical patent/WO2002066911A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/003—General constructional features for cooling refrigerating machinery
    • 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
    • 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
    • F25B2339/046—Condensers with refrigerant heat exchange tubes positioned inside or around a vessel containing water or pcm to cool the refrigerant gas
    • 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
    • F25B2339/047—Water-cooled condensers

Definitions

  • the present invention refers to a condenser to be mounted to the rear part of a refrigeration appliance in the form of a refrigerator or a freezer for household use.
  • a condenser usually of the tube-wire type, which is provided in series with the refrigeration circuit of the household appliance for promoting the dissipation, to the ambient air, of the heat extracted from the gaseous refrigerant fluid pumped by the compressor, in order to liquefy said fluid before it is introduced in the evaporator .
  • a condenser for a refrigeration appliance defined by a refrigerator or a freezer presenting a cabinet provided with a rear wall .
  • the condenser comprises a hermetic shell externally attached to the rear wall of the cabinet and which carries, internally, a condensing tubular extension, for condensation of the refrigerant fluid and which is arranged in series with the refrigeration circuit of the refrigeration appliance and immersed in a working fluid contained inside the hermetic shell and which is capable of transferring to the latter the heat absorbed from the heated gaseous refrigerating fluid arriving to said condensing tubular extension.
  • the construction proposed above leads to the provision of a second heat dissipation surface, at a temperature as close as possible to the condensation temperature, and with acceptable aesthetical characteristics.
  • the heat of the condensing tubular extension is transferred to the working fluid and then from the latter to the hermetic shell, to be dissipated to the ambient air.
  • Figure 1 represents an exploded vertical sectional view of a condenser constructed according to the present invention and associated with the cabinet of a refrigeration appliance;
  • Figure 2 represents a similar view to that of the previous figure, but illustrating the condenser mounted to the rear wall of the cabinet. Description of the illustrated embodiment As schematically illustrated and mentioned before, the present condenser is applied to a refrigeration appliance defined by a refrigerator or a freezer of household use, presenting a cabinet 1 of adequate construction and provided with a rear wall 2. According to the present invention, the condenser comprises a hermetic shell 10 to be externally attached to the rear wall 2 of the cabinet 1.
  • the hermetic shell 10 is constructed in any adequate material, such as thermoplastic and metal, comprising a basic portion 11 in the form of a tray and provided with an outwardly projecting peripheral edge, in the form of a surrounding external flange 12 , which will be seated and attached, by any adequate means (not illustrated) against the rear wall 2 of the cabinet 1.
  • the closing of the basic portion 11 is obtained by a cover 15, which is seated and affixed against the peripheral edge of the basic portion 11, and which is preferably provided with a gasket 16 provided between the basic portion 11 and the cover 15, so as to assure the tightness of the peripheral region where said two parts of the hermetic shell 10 are seated to each other.
  • the fixation of the cover 15 to the basic portion 11 is obtained by affixing the latter to the rear wall 2 of the cabinet 1.
  • the gasket 16 may be formed by an adhesive tape sheet glued to the peripheral edge of the basic portion 11.
  • a condensing tubular extension 20 for condensing the refrigerant fluid of the refrigeration circuit of the refrigeration appliance, is mounted inside one of the parts of the hermetic shell 10.
  • the condensing tubular extension 20 is attached, by adequate fitting means, to the internal part of the cover 15, before the latter is seated and affixed to the basic portion 11.
  • the condensing tubular extension 20 may be defined, for example by a tube-wire condenser of known construction, which is mounted in series with the refrigeration circuit of the refrigeration appliance.
  • the ends of the condensing tubular extension 20 are connected to respective tubular inlet tubes 13, which are provided through the hermetic shell 10 and connected to the refrigeration circuit.
  • a working fluid 30, usually treated water by means of an upper nozzle 14, which is preferably provided in the basic portion 11, making the condensing tubular extension 20 be completely immersed in the working fluid 30.
  • the hermetic shell 10 is then affixed against the rear wall 2 of the cabinet 1, as illustrated in figure 2. It should be understood that the filling of the hermetic shell 10 with the working fluid 30 may be achieved after the hermetic shell 10 has been attached to the cabinet 1.
  • the hermetic shell 10 may present different embodiments. However, it is desirable that its shape causes a minimum possible interference with the total depth of the cabinet 1, maintaining the rear wall thereof with a "clean" appearance. Therefore, the hermetic shell 10 presents height and width that are compatible with the same dimensions of the rear wall 2 of the cabinet 1, and a thickness that is substantially smaller than said other dimensions. Since the working fluid 30, exemplarily represented by water, is a thermal conductor better than the air, the proposed construction allows a more efficient heat dissipation and consequently the use of smaller condensing tubular extensions (condensers) 20. Besides the aspect mentioned above, , the heat exchange between the working fluid 30 and the hermetic shell 10 is efficient enough to maintain the walls of the latter at temperatures that are approximately uniform and close to the condensing temperature of the refrigerant fluid.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

A condenser for a refrigeration appliance, to be used in a refrigerator or freezer, comprising a hermetic shell (10) externally attached to the rear wall (2) of the cabinet (1) and carrying, internally, a condensing tubular extension (20) immersed in a working fluid (30) contained inside the hermetic shell (10) and which is capable of transferring to the latter the heat absorbed from the heated gaseous refrigerant fluid arriving to said condensing tubular extension (20).

Description

CONDENSER FOR A REFRIGERATION APPLIANCE
Field of the invention
The present invention refers to a condenser to be mounted to the rear part of a refrigeration appliance in the form of a refrigerator or a freezer for household use. Prior art There are well known the refrigerators or freezers for household use presenting a cabinet, to the rear side of which is externally attached a condenser, usually of the tube-wire type, which is provided in series with the refrigeration circuit of the household appliance for promoting the dissipation, to the ambient air, of the heat extracted from the gaseous refrigerant fluid pumped by the compressor, in order to liquefy said fluid before it is introduced in the evaporator . While operating adequately within a wide range of room temperatures, assuring an acceptable thermodynamical performance and being economically viable, these tube- wire condensers of the prior art present the disadvantages of requiring a relatively large thermal exchange area and of being exposed, with the wired structure thereof projecting beyond the rear wall of the cabinet. In other words, these known condensers require large and anti-aesthetic structures to operate in a thermodynamically acceptable way. Object of the invention Thus, it is a generic object of the present invention to provide a condenser for a refrigeration appliance of the type considered herein, which presents an economically viable construction and a thermodynamically acceptable performance, and which imparts to the rear wall of the cabinet of the refrigeration appliance a clean appearance, without the salient figure of the condenser.
Summary of the invention
The object mentioned above is achieved by the provision of a condenser for a refrigeration appliance defined by a refrigerator or a freezer presenting a cabinet provided with a rear wall .
According to the invention, the condenser comprises a hermetic shell externally attached to the rear wall of the cabinet and which carries, internally, a condensing tubular extension, for condensation of the refrigerant fluid and which is arranged in series with the refrigeration circuit of the refrigeration appliance and immersed in a working fluid contained inside the hermetic shell and which is capable of transferring to the latter the heat absorbed from the heated gaseous refrigerating fluid arriving to said condensing tubular extension.
The construction proposed above leads to the provision of a second heat dissipation surface, at a temperature as close as possible to the condensation temperature, and with acceptable aesthetical characteristics.
In a first step, the heat of the condensing tubular extension is transferred to the working fluid and then from the latter to the hermetic shell, to be dissipated to the ambient air.
Brief description of the drawings
The invention will be described below, with reference to the attached drawings, in which: Figure 1 represents an exploded vertical sectional view of a condenser constructed according to the present invention and associated with the cabinet of a refrigeration appliance; and
Figure 2 represents a similar view to that of the previous figure, but illustrating the condenser mounted to the rear wall of the cabinet. Description of the illustrated embodiment As schematically illustrated and mentioned before, the present condenser is applied to a refrigeration appliance defined by a refrigerator or a freezer of household use, presenting a cabinet 1 of adequate construction and provided with a rear wall 2. According to the present invention, the condenser comprises a hermetic shell 10 to be externally attached to the rear wall 2 of the cabinet 1. In the illustrated construction, the hermetic shell 10 is constructed in any adequate material, such as thermoplastic and metal, comprising a basic portion 11 in the form of a tray and provided with an outwardly projecting peripheral edge, in the form of a surrounding external flange 12 , which will be seated and attached, by any adequate means (not illustrated) against the rear wall 2 of the cabinet 1. The closing of the basic portion 11 is obtained by a cover 15, which is seated and affixed against the peripheral edge of the basic portion 11, and which is preferably provided with a gasket 16 provided between the basic portion 11 and the cover 15, so as to assure the tightness of the peripheral region where said two parts of the hermetic shell 10 are seated to each other.
In a possible construction, the fixation of the cover 15 to the basic portion 11 is obtained by affixing the latter to the rear wall 2 of the cabinet 1. In order to facilitate the assembly of the parts, the gasket 16 may be formed by an adhesive tape sheet glued to the peripheral edge of the basic portion 11. Before the hermetic shell 11 is closed, a condensing tubular extension 20, for condensing the refrigerant fluid of the refrigeration circuit of the refrigeration appliance, is mounted inside one of the parts of the hermetic shell 10. In a possible arrangement, the condensing tubular extension 20 is attached, by adequate fitting means, to the internal part of the cover 15, before the latter is seated and affixed to the basic portion 11.
The condensing tubular extension 20 may be defined, for example by a tube-wire condenser of known construction, which is mounted in series with the refrigeration circuit of the refrigeration appliance. The ends of the condensing tubular extension 20 are connected to respective tubular inlet tubes 13, which are provided through the hermetic shell 10 and connected to the refrigeration circuit. Once the hermetic shell 10 is closed, it is filled up with a working fluid 30, usually treated water, by means of an upper nozzle 14, which is preferably provided in the basic portion 11, making the condensing tubular extension 20 be completely immersed in the working fluid 30. The hermetic shell 10 is then affixed against the rear wall 2 of the cabinet 1, as illustrated in figure 2. It should be understood that the filling of the hermetic shell 10 with the working fluid 30 may be achieved after the hermetic shell 10 has been attached to the cabinet 1.
The hermetic shell 10 may present different embodiments. However, it is desirable that its shape causes a minimum possible interference with the total depth of the cabinet 1, maintaining the rear wall thereof with a "clean" appearance. Therefore, the hermetic shell 10 presents height and width that are compatible with the same dimensions of the rear wall 2 of the cabinet 1, and a thickness that is substantially smaller than said other dimensions. Since the working fluid 30, exemplarily represented by water, is a thermal conductor better than the air, the proposed construction allows a more efficient heat dissipation and consequently the use of smaller condensing tubular extensions (condensers) 20. Besides the aspect mentioned above, , the heat exchange between the working fluid 30 and the hermetic shell 10 is efficient enough to maintain the walls of the latter at temperatures that are approximately uniform and close to the condensing temperature of the refrigerant fluid.

Claims

1. A condenser for a refrigeration appliance, defined by a refrigerator or a freezer, presenting a cabinet (1) provided with a rear wall (2) , characterized in that it comprises a hermetic shell (10) externally attached to the rear wall (2) of the cabinet (1) and which carries, internally, a condensing tubular extension (20), for condensation of a refrigerant fluid and which is arranged in series with the refrigeration circuit of the refrigeration appliance and immersed in a working fluid (30) contained inside the hermetic shell (10) and which is capable of transferring to the latter the heat absorbed from the heated gaseous refrigerant fluid arriving to said condensing tubular extension (20).
2. Condenser, according to claim 1, characterized in that said condensing tubular extension (20) is defined by a tube-wire condenser.
3. Condenser, according to claim 1, characterized in that the working fluid (30) is water.
4. Condenser, according to claim 1, characterized in that the hermetic shell (10) presents an upper nozzle (14) for introducing the working fluid (30) .
5. Condenser, according to claim 1, characterized in that the hermetic shell (10) is provided with tubular inlet tubes (13) for connecting the condensing tubular extension (20) to the refrigeration circuit of the refrigeration appliance.
6. Condenser, according to claim 1, characterized in that the hermetic shell (10) presents height and width compatible with the same dimensions of the rear wall 2 of the cabinet 1, and a thickness that is substantially smaller than said other dimensions.
7. Condenser, according to claim 1, characterized in that the hermetic shell (10) comprises a basic portion (11) in the form of a tray, and a cover (15) to be seated against the rear wall (2) of the cabinet (1).
8. Condenser, according to claim 7, characterized in that the basic portion (11) has a peripheral edge (12) receiving a gasket (16) against which is hermetically seated and attached the cover (15) .
9. Condenser, according to claim 8, characterized in that the attachment of the cover (15) against the basic portion (11) is obtained by attaching the latter to the rear wall (2) of the cabinet (1) .
10. Condenser, according to claim 8, characterized in that the gasket (16) is defined by an adhesive tape sheet .
11. Condenser, according to claim 7, characterized in that the peripheral edge of the basic portion (11) incorporates a surrounding external flange (12) to be seated and attached against the rear wall (2) of the cabinet (1) .
PCT/BR2002/000023 2001-02-16 2002-02-07 Condenser for a refrigeration appliance WO2002066911A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI0100723-8 2001-02-16
BR0100723-8A BR0100723A (en) 2001-02-16 2001-02-16 Condenser for refrigeration appliance

Publications (1)

Publication Number Publication Date
WO2002066911A1 true WO2002066911A1 (en) 2002-08-29

Family

ID=3946781

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2002/000023 WO2002066911A1 (en) 2001-02-16 2002-02-07 Condenser for a refrigeration appliance

Country Status (4)

Country Link
AR (1) AR032675A1 (en)
BR (1) BR0100723A (en)
UY (1) UY27152A1 (en)
WO (1) WO2002066911A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008142414A1 (en) * 2007-05-22 2008-11-27 4Energy Ltd. Condenser heatsink
DE102010010858A1 (en) 2010-02-10 2011-08-11 Liebherr-Hausgeräte Ochsenhausen GmbH, 88416 Cooling- and/or freezing- device, has refrigerant cycle provided with condenser, and secondary cooling agent transferring and discharging heat from condenser to environment, where cooling agent is circulated in secondary cycle
DE102012017345A1 (en) * 2012-08-29 2014-05-15 Johannes Georg Mehlig Refrigerator or freezer for use in household, has evaporator and condenser are located in front of rear wall in water tanks, and antifreeze is added to water tanks such that water remains liquid even at low evaporation temperatures
US10871315B2 (en) 2016-03-16 2020-12-22 Liebherr-Hausgerate Lienz Gmbh Refrigerant circuit for a cooling and/or freezing appliance

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2191198A (en) * 1937-02-26 1940-02-20 Gen Motors Corp Refrigerating apparatus
FR880816A (en) * 1941-04-19 1943-04-06 Improvements to refrigeration condensers
US2365786A (en) * 1943-09-09 1944-12-26 Westinghouse Electric & Mfg Co Refrigeration apparatus
US4501128A (en) * 1982-05-05 1985-02-26 Gallagher Paul H Heat reclamation
GB2207742A (en) * 1987-06-27 1989-02-08 P W Adamson Limited Refrigeration system
DD293638A5 (en) * 1990-04-09 1991-09-05 Veb Kombinat Ilka Luft- Und Kaeltetechnik,De KUEHLMOEBELGEHAEUSE
US5228311A (en) * 1990-08-16 1993-07-20 The Coca-Cola Company Cooling apparatus
EP0866289A2 (en) * 1997-03-18 1998-09-23 Société d'Electromenager du Nord Selnor A heat-exchanger such as a condenser and/or evaporator for refrigerating apparatus
EP1010956A1 (en) * 1998-12-15 2000-06-21 OCEAN S.p.A. A condenser for a refrigerator, a freezer, a combination thereof, or the like

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2191198A (en) * 1937-02-26 1940-02-20 Gen Motors Corp Refrigerating apparatus
FR880816A (en) * 1941-04-19 1943-04-06 Improvements to refrigeration condensers
US2365786A (en) * 1943-09-09 1944-12-26 Westinghouse Electric & Mfg Co Refrigeration apparatus
US4501128A (en) * 1982-05-05 1985-02-26 Gallagher Paul H Heat reclamation
GB2207742A (en) * 1987-06-27 1989-02-08 P W Adamson Limited Refrigeration system
DD293638A5 (en) * 1990-04-09 1991-09-05 Veb Kombinat Ilka Luft- Und Kaeltetechnik,De KUEHLMOEBELGEHAEUSE
US5228311A (en) * 1990-08-16 1993-07-20 The Coca-Cola Company Cooling apparatus
EP0866289A2 (en) * 1997-03-18 1998-09-23 Société d'Electromenager du Nord Selnor A heat-exchanger such as a condenser and/or evaporator for refrigerating apparatus
EP1010956A1 (en) * 1998-12-15 2000-06-21 OCEAN S.p.A. A condenser for a refrigerator, a freezer, a combination thereof, or the like

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008142414A1 (en) * 2007-05-22 2008-11-27 4Energy Ltd. Condenser heatsink
DE102010010858A1 (en) 2010-02-10 2011-08-11 Liebherr-Hausgeräte Ochsenhausen GmbH, 88416 Cooling- and/or freezing- device, has refrigerant cycle provided with condenser, and secondary cooling agent transferring and discharging heat from condenser to environment, where cooling agent is circulated in secondary cycle
DE102012017345A1 (en) * 2012-08-29 2014-05-15 Johannes Georg Mehlig Refrigerator or freezer for use in household, has evaporator and condenser are located in front of rear wall in water tanks, and antifreeze is added to water tanks such that water remains liquid even at low evaporation temperatures
US10871315B2 (en) 2016-03-16 2020-12-22 Liebherr-Hausgerate Lienz Gmbh Refrigerant circuit for a cooling and/or freezing appliance

Also Published As

Publication number Publication date
AR032675A1 (en) 2003-11-19
UY27152A1 (en) 2002-03-22
BR0100723A (en) 2002-11-12

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