US2622754A - Refrigerator cabinet construction - Google Patents

Refrigerator cabinet construction Download PDF

Info

Publication number
US2622754A
US2622754A US22869A US2286948A US2622754A US 2622754 A US2622754 A US 2622754A US 22869 A US22869 A US 22869A US 2286948 A US2286948 A US 2286948A US 2622754 A US2622754 A US 2622754A
Authority
US
United States
Prior art keywords
heat
breaker strip
insulating material
walls
space
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.)
Expired - Lifetime
Application number
US22869A
Inventor
Horace W Eagles
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Priority to US22869A priority Critical patent/US2622754A/en
Application granted granted Critical
Publication of US2622754A publication Critical patent/US2622754A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F25D23/08—Parts formed wholly or mainly of plastics materials
    • F25D23/082—Strips
    • 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
    • F25D23/08—Parts formed wholly or mainly of plastics materials
    • F25D23/082—Strips
    • F25D23/085—Breaking strips
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/10—Refrigerator top-coolers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S62/00—Refrigeration
    • Y10S62/13—Insulation

Definitions

  • My invention relates to refrigerated cabinets and more particularly to arrangements for insulating such cabinets.
  • heat-insulating materials of the aerogel type including inorganic aerogels, such as, silica aerogel, alumina aerogel, etc., organic aerogels, such as, organosilicon aerogel, described and claimed in the application of John R. Elliott and Robert H. Krieble, Serial No. 577,343, filed February 10, 1945, now Patent No.
  • organic-inorganic aerogels such as, organo-silicon-silica aerogels, described and claimed in the application of Robert H. Krieble and John R. Elliott, Serial No. 577,342, filed February 10, 1945, now Patent No. 2,441,422, and assigned to the same assignee as the present invention.
  • the presence of such voids adversely affects the insulating properties.
  • the insulating properties of the inorganic aerogels may be adversely affected by condensation of moisture thereon in the insulation space, because of resultant shrinkage of the material involved.
  • FIG. 1 is a rear elevation view of a refrigerator cabinet incorporating my invention
  • Fig. 2 is an enlarged view of a portion of the cabinet shown in Fig. 1
  • Fig. 3 is a rear elevation view of the cabinet in an inverted position
  • Fig. 4 isan enlarged view of a portion of the cabinet illustrated in Fig. 3
  • Fig. 5 is an enlarged view of a portion of the cabinet showing the elements in a slightly diiierent position.
  • a refrigerated cabinet 1 of the chest type suitable for the storage of frozen foods The cabinet includes an outer wall 2 and an inner wall 3, the inner wall forming a compartment 4 for food storage.
  • the compartment 4 is provided with an access opening at the top and this opening is closed by a lid 5.
  • a machinery compartment 6 is provided for housing the refrigerant condensing apparatus (not shown).
  • a breaker strip 1 of suitable heat-insulating material is provided for closing the space between the inner and outer walls adjacent the access opening of the cabinet.
  • the breaker strip is secured to the walls 2 and 3 respectively by screws 8, 9 or other suitable fastening devices.
  • a gasket Iii is provided between the lid 5 and the outer wall 2 for sealing the storage space. The gasket is clamped between the breaker strip and the outer wall by the screw 8.
  • the space between the walls 2 and 3 is adapted to be filled with a heat-insulating material I l of the aerogel type, for example, silica aerogel.
  • a heat-insulating material I l of the aerogel type for example, silica aerogel.
  • This material may be subject to settling due to jarring or vibration during handling or operation of the cabinet.
  • voids may form, particularly in the upper portion of the insulating space between the walls 2 and 3, and thereby reduce the insulating effect.
  • a construction including a flexible diaphragm I2 is employed within the space between the walls 2 and 3 in the general area of the breaker strip 1.
  • This diaphragm is formed of a flexible, moisture-impervious material, such as rubber.
  • One edge of the diaphragm is held between a retaining strip l3 and the outer Wall 2 by a screw M or other suitable fastening device.
  • the other edge of the diaphragm is similarly held between a retaining strip 15 and the inner wall 3 by a screw It or other suitable fastening device.
  • the diaphragm is preferably cemented to these walls to insure sealing engagement therewith.
  • the cabinet is first placed in the inverted position shown in Fig. 3.
  • the rear wall of the cabinet includes two filling openings I! and I8 adjacent a bottom portion I9 of the outer wall 2.
  • the heat-insulating material II is introduced into the space between the inner and outer walls through the filling opening I1. This is accomplished by blowing, pouring or vibrating the insulation into this opening, the air being vented through the opening I8.
  • a suitable filter bag
  • the cabinet may be tipped forward toward the end of the filling operation so as to insure that the filling hole I! is at the highest point in the space to be filled.
  • the flexible diaphragm I2 is forced toward the breaker strip during this operation minimizing the space between the breaker strip and the flexible diaphragm.
  • the holes I1 and I8 are closed by suitable caps 2
  • the cabinet is then placed in the upright position illustrated in Fig. 1.
  • the breaker strip I is removed and resilient compressible heat-insulating material 23, such as spun glass, wood fiber, felt, etc. i placed within the space 20.
  • An excess of heat-insulating material 23 is employed, that is, an amount which is of greater volume before compression than the space 20 between the diaphragm I2 and the normal position of the breaker strip 1.
  • the breaker strip 1 is then replaced, compressing the heat-insulating material 23 and forcing the diaphragm I2 into the general shape illustrated in Fig. 2.
  • the space 20 between the diaphragm and the breaker strip in Fig. 2 is less than the maximum space available between the diaphragm and the breaker strip, as illustrated in Fig. 5.
  • the heat-insulating material 23 in Fig. 2 is compressed between the breaker strip I and the mass of heat-insulating material I I.
  • the heat-insulating material I I may settle to some extent.
  • the compressed resilient heat-insulating material 23 expands to maintain the diaphragm I2 against the mass of heat-insulating material II, and thereby fill any voids which might otherwise be left by the receding heat-insulating material I I.
  • the resilient compressible heat-insulating material 23 is arranged in the region adjacent the breaker strip I.
  • the area in the region of the access opening of the cabinet and of the breaker strip I is particularly susceptible to the condensation of water vapor or sweating, and this condition is aggravated by any voids which might appear in the area adjacent the breaker strip.
  • the arrangement disclosed above by providing the compressible heat-insulating material in this particular region, specifically insures the presence of heat-insulating material in this area.
  • the heat-insulating material II employed is an aerogel of the inorganic type, it may be adversely affected by moisture, and hence it is desirable to minimize the transmission of moisture into the insulation space between the walls 2 and 3. While the walls of the cabinet may be securely Welded to prevent such leakage of moisture, moisture may leak into the insulation space in the region around the breaker strip I.
  • the flexible diaphragm minimizes such leakage of moisture in this region, since the diaphragm is made of a moisture-impervious material, such as rubber, and is arranged along those portions of the cabinet where leakage might otherwise occur.
  • the heat-insulating material I I has been de scribed as being introduced into the cabinet before any heat-insulating material is placed in the space 20 between the diaphragm and the breaker strip.
  • the resilient compressible heat-insulating material 23 may be first placed in the space 20, forcing the diaphragm I2 to the general shape shown in Fig. 5.
  • the cabinet may then be inverted as shown in Fig. 3 and the heat-insulating material II introduced as before.
  • the mass of the heat-insulating material II compresses the heat-insulating material 23 to the general shape shown in Fig. 2. Any subsequent settling of the heat-insulating material II results in an expansion of the heat-insulating material 23 toward the shape shown in Fig. 5, as previously described.
  • the breaker strip I was set forth as secured in position before the cabinet was inverted and the heat-insulating material II introduced.
  • the cabinet was shifted to the position shown in Fig. 1 it was necessary to remove the breaker strip, introduce the heat-insulating material 23, and then replace the breaker strip.
  • the original assembly of the breaker strip is required because in the particular cabinet construction illustrated, the breaker strip constitutes the support holding the inner and outer walls in spaced relationship. It will be apparent, therefore, that should a form of cabinet construction be employed in which other elements are utilized for holding the Walls in spaced relationship, the breaker strip need not be installed until after the heat-insulating material II has been introduced and the resilient compressible heat-insulating material 23 has been placed in the space 20.
  • a refrigerated cabinet comprising an outer wall, an inner wall spaced from said outer wall, a breaker strip closing the space between said walls, a moisture-impervious, flexible diaphragm engaging said walls adjacent said breaker strip and extending into the space between said walls, a heat-insulating material filling the space between said walls, and a resilient compressed heat-insulating material filling the space between said breaker strip and said diaphragm and exerting pressure on said diaphragm.
  • a refrigerated cabinet comprising an outer wall, an inner wall spaced from said outer wall, a breaker strip closing the space between said walls, a moisture-impervious, flexible diaphragm, a retaining strip maintaining one edge of said diaphragm in engagement with said outer wall, a second retaining strip maintaining another edge of said diaphragm in engagement with said inner wall, said diaphragm being spaced from said breaker strip and extending into the space between said walls, a heat-insulating material filling the space between said walls, and a resilient compressed heat-insulating material filling the space between said breaker strip and said diaphragm and exerting pressure on said diaphragm.
  • a refrigerated cabinet comprising an outer wall, an inner wall spaced from said outer wall, a breaker strip closing the space between said walls, a moisture-impervious, flexible diaphragm engaging said walls adjacent said breaker strip and extending into the space between said walls, a heat-insulating material of the aerogel type filling the space between said walls, and aresilient compressed heat-insulating material filling the space between said breaker strip and said diaphragm.
  • a refrigerated cabinet comprising an outer wall, an inner wall spaced from said outer wall, a breaker strip closing the space between said walls, a moisture-impervious, flexible diaphragm engaging said Walls adjacent said breaker strip and extending into the space between said walls, a heat-insulating material filling the space between said. walls, said material being of a type subject to settling due to vibration during handling and operation of the cabinet, and a resilient compressed heat-insulating material filling the space between said breaker strip and said diaphragm, said last-named heat-insulating material expanding to fill any voids resulting from settling of said flrstmamed heat-insulatin material.
  • a refrigerated cabinet comprisin an outer wall, an inner wall spaced from said outer wall, said walls being formed to provide an access opening at the top of said cabinet, 3, breaker strip closing the space between said wall adjacent said access opening, a moisture-impervious, flexible diaphragm secured to said walls adjacent said breaker strip, said diaphragm being spaced from said strip and extending into the space between said walls, a heat-insulating material of the aerogel type filling the space between said walls, and a resilient compressible heat-insulating material filling the space between said diaphragm and said breaker strip, said last-named heat-insulating material being placed in said last-named space under compression and having the characteristic of expanding to fill any voids resulting from the settling of said first-mentioned heat-insulating material.
  • a refrigerated cabinet comprising an outer wall, an inner wall spaced from said outer wall, a breaker strip closing the space between said walls, a moisture-impervious, flexible diaphragm, a retaining strip maintaining one edge of said diaphragm in engagement with said outer wall, a second retaining strip maintaining another edge of said diaphragm in engagement with said inner wall, said diaphragm being spaced from said breaker strip and extending into the space between said walls, a heat-insulating material of the aerogel type filling the space between said walls, and a resilient compressed heat-insulating material filling the space between said breaker strip and said diaphragm, said last-mentioned heat-insulating material tending to expand and 6. thereby increase the extension of said diaphragm into said space between said walls.
  • the method of insulating the cabinet which comprises filling the space between the walls with heat-insulating material, placing an excess of a resilient compresssible heat-insulating material adjacent said diaphragm on the breaker strip side thereof, placing said breaker strip against said resilient heatinsulating material, pressing said breaker strip into engagement with the walls of said cabinet to compress said resilient heat-insulating material and cause said resilient heat-insulating material to exert pressure on said diaphragm, and securing said breaker strip in position in engagement with said walls.
  • the method of insulating the cabinet which comprises arranging the cabinet with the access opening downward, filling the space between said walls with heat-insulating material,
  • the method of insulating the cabinet which comprises filling the space between the walls with a heat-insulating material of the aerogel type, placing an excess of a resilient compressible heat-insulatin material adjacent said diaphragm on the breaker strip side thereof, placing said breaker strip against said resilient heat-insulating material, pressing said breaker strip into engagement with the walls of said cabinet to compress said resilient heatinsulating material and cause said resilient heatinsulating material to exert pressure on said diaphragm, and securing said breaker strip in position in engagement With said walls.
  • the method of insulating the cabinet which comprises filling the space between the walls with a heat-insulating material of theaerogel type, removing the breaker strip, placing an excess of a resilient compressible heat-insulating material adjacent said diaphragm on the breaker strip side thereof, and replacing the breaker strip to compress said resilient heat-insulating material and cause said resilient heat-insulating material to exert pressure on said diaphragm.
  • the method of insulating the cabinet which comprises filling the space between the diaphragmand the plane occupied by the breaker strip in the assembled position of said breaker strip with a resilient compressible heat-insulating material, closing said space with said breaker strip, and filling the space between said walls with a heat-insulating material of the aerogel type sufiicient in amount to compress said first-mentioned heat-insulating material.
  • the method of insulating the cabinet which comprises arranging the cabinet with the access opening downward, filling the space between the walls with a heat-insulating material of the aerogel type, arranging the cabinet with the access opening upward, placing an excess of a resilient compressible heat-insulating material adjacent said diaphragm on the breaker strip side thereof, placing said breaker strip against said resilient heat-insulating material, pressing said breaker strip into engagement with the walls of said cabinet to compress said resilient heat-insulating material andcause said resilient heat-insulating material .to exert pressure on said diaphragm, and securing said breaker strip in positionin engagement with said walls.
  • the method of insulating the cabinet which comprises arranging the cabinet with the access opening downward, filling the space between the walls with a heat-insulating material of the aerogel type, arranging the cabinet with said access opening upward, removing said breaker strip, placing an excess of a resilient compressible heat-insulating material adjacent said diaphragm on the breaker strip side thereof, and replacing saidibreaker strip to compress said last-named heat-insulating material and cause said resilient heat-insulating material to exert pressure on said diaphragm.

Description

Dec. 23, 1952 H. w. EAGLES REFRIGERATOR CABINET CONSTRUCTION Filed April 25, 1948 Inventor 4 HoracewEagles His Attorney.
Patented Dec. 23, 1952 UNITED STATES PATENT OFFICE 2,622,754 REFRIGERATOR CABINET CONSTRUCTION Horace W. Eagles, Erie, Pa., assignor to General Electric Company, a corporation of New York Application April 23, 1948, Serial No. 22,869
13 Claims.
My invention relates to refrigerated cabinets and more particularly to arrangements for insulating such cabinets.
In the construction of refrigerated cabinets, and particularly of household freezers wherein a low temperature must be maintained, it is desirable to employ a material with good thermalinsulating properties so as to be able to minimize the thickness of insulation required. Reduction in the thickness of insulation is, of course, refiected in increased space available within the freezer for the storage of frozen foods without any increase in the space required by the cabinet. Some materials having desirable heat-insulating characteristics have an undesirable characteristic of limited settling due to jarring or vibration during factory handling and shipment and during operation of the cabinet, with the resultant appearance of voids within the insulation. The above characteristics are exhibited for example, by heat-insulating materials of the aerogel type, including inorganic aerogels, such as, silica aerogel, alumina aerogel, etc., organic aerogels, such as, organosilicon aerogel, described and claimed in the application of John R. Elliott and Robert H. Krieble, Serial No. 577,343, filed February 10, 1945, now Patent No.
2,441,423, and assigned to the same assignee as the present invention, and organic-inorganic aerogels, such as, organo-silicon-silica aerogels, described and claimed in the application of Robert H. Krieble and John R. Elliott, Serial No. 577,342, filed February 10, 1945, now Patent No. 2,441,422, and assigned to the same assignee as the present invention. The presence of such voids adversely affects the insulating properties. Also, the insulating properties of the inorganic aerogels may be adversely affected by condensation of moisture thereon in the insulation space, because of resultant shrinkage of the material involved.
It is an object of my invention to provide an improved arrangement for insulating a refrigerated cabinet.
7 It is another object of my invention to provide a refrigerated cabinet construction including an improved arrangement for minimizing voids in the insulation.
. It is a further object of my invention to provide a refrigerated cabinet construction including an improved arrangement for minimizing transmission of moisture into the insulation space.
Other objects and advantages of my invention will become apparent as the following descrip- 2 tion proceeds and the features of novelty which characterize my invention will be pointed out with particularity in the claims annexed to and forming part of this specification.
For a better understanding of my invention reference may be had to the accompanying drawing in which Fig. 1 is a rear elevation view of a refrigerator cabinet incorporating my invention; Fig. 2 is an enlarged view of a portion of the cabinet shown in Fig. 1; Fig. 3 is a rear elevation view of the cabinet in an inverted position; Fig. 4 isan enlarged view of a portion of the cabinet illustrated in Fig. 3; and Fig. 5 is an enlarged view of a portion of the cabinet showing the elements in a slightly diiierent position.
Referring now to the drawing, there is shown a refrigerated cabinet 1 of the chest type suitable for the storage of frozen foods. The cabinet includes an outer wall 2 and an inner wall 3, the inner wall forming a compartment 4 for food storage. The compartment 4 is provided with an access opening at the top and this opening is closed by a lid 5. At the bottom of the cabinet a machinery compartment 6 is provided for housing the refrigerant condensing apparatus (not shown).
A breaker strip 1 of suitable heat-insulating material is provided for closing the space between the inner and outer walls adjacent the access opening of the cabinet. The breaker strip is secured to the walls 2 and 3 respectively by screws 8, 9 or other suitable fastening devices. A gasket Iii is provided between the lid 5 and the outer wall 2 for sealing the storage space. The gasket is clamped between the breaker strip and the outer wall by the screw 8.
The space between the walls 2 and 3 is adapted to be filled with a heat-insulating material I l of the aerogel type, for example, silica aerogel. This material may be subject to settling due to jarring or vibration during handling or operation of the cabinet. Hence, voids may form, particularly in the upper portion of the insulating space between the walls 2 and 3, and thereby reduce the insulating effect. In order to minimize such voids a construction including a flexible diaphragm I2 is employed within the space between the walls 2 and 3 in the general area of the breaker strip 1. This diaphragm is formed of a flexible, moisture-impervious material, such as rubber. One edge of the diaphragm is held between a retaining strip l3 and the outer Wall 2 bya screw M or other suitable fastening device. The other edge of the diaphragm is similarly held between a retaining strip 15 and the inner wall 3 by a screw It or other suitable fastening device. The diaphragm is preferably cemented to these walls to insure sealing engagement therewith.
During the process of introducing heat-insulating material into the space between the walls 2 and 3, the cabinet is first placed in the inverted position shown in Fig. 3. The rear wall of the cabinet includes two filling openings I! and I8 adjacent a bottom portion I9 of the outer wall 2. The heat-insulating material II is introduced into the space between the inner and outer walls through the filling opening I1. This is accomplished by blowing, pouring or vibrating the insulation into this opening, the air being vented through the opening I8. A suitable filter bag,
may be placed across the opening I8 to allow the exhausting of the air therethrough without permitting the passage of the heat-insulating material therethrough. The space between the inner and outer walls is filled with the heat-insulating material during this operation. The cabinet may be tipped forward toward the end of the filling operation so as to insure that the filling hole I! is at the highest point in the space to be filled. As shown most clearly in Fig. 4, the flexible diaphragm I2 is forced toward the breaker strip during this operation minimizing the space between the breaker strip and the flexible diaphragm.
When the filling with the heat-insulating material II has been completed the holes I1 and I8 are closed by suitable caps 2| and 22. These caps may be welded or otherwise secured to the outer wall 2 to seal these openings. The cabinet is then placed in the upright position illustrated in Fig. 1. The breaker strip I is removed and resilient compressible heat-insulating material 23, such as spun glass, wood fiber, felt, etc. i placed within the space 20. An excess of heat-insulating material 23 is employed, that is, an amount which is of greater volume before compression than the space 20 between the diaphragm I2 and the normal position of the breaker strip 1. The breaker strip 1 is then replaced, compressing the heat-insulating material 23 and forcing the diaphragm I2 into the general shape illustrated in Fig. 2.
It will be observed that the space 20 between the diaphragm and the breaker strip in Fig. 2 is less than the maximum space available between the diaphragm and the breaker strip, as illustrated in Fig. 5. Thus the heat-insulating material 23 in Fig. 2 is compressed between the breaker strip I and the mass of heat-insulating material I I. During handling of the cabinet and during operation of the refrigerating apparatus the heat-insulating material I I may settle to some extent. As it does so, the compressed resilient heat-insulating material 23 expands to maintain the diaphragm I2 against the mass of heat-insulating material II, and thereby fill any voids which might otherwise be left by the receding heat-insulating material I I.
It should be noted particularly that the resilient compressible heat-insulating material 23 is arranged in the region adjacent the breaker strip I. The area in the region of the access opening of the cabinet and of the breaker strip I is particularly susceptible to the condensation of water vapor or sweating, and this condition is aggravated by any voids which might appear in the area adjacent the breaker strip. The arrangement disclosed above, by providing the compressible heat-insulating material in this particular region, specifically insures the presence of heat-insulating material in this area.
Where the heat-insulating material II employed is an aerogel of the inorganic type, it may be adversely affected by moisture, and hence it is desirable to minimize the transmission of moisture into the insulation space between the walls 2 and 3. While the walls of the cabinet may be securely Welded to prevent such leakage of moisture, moisture may leak into the insulation space in the region around the breaker strip I. The flexible diaphragm minimizes such leakage of moisture in this region, since the diaphragm is made of a moisture-impervious material, such as rubber, and is arranged along those portions of the cabinet where leakage might otherwise occur.
In describing the process of insulating the cabinet the heat-insulating material I I has been de scribed as being introduced into the cabinet before any heat-insulating material is placed in the space 20 between the diaphragm and the breaker strip. If desired, the resilient compressible heat-insulating material 23 may be first placed in the space 20, forcing the diaphragm I2 to the general shape shown in Fig. 5. The cabinet may then be inverted as shown in Fig. 3 and the heat-insulating material II introduced as before. The mass of the heat-insulating material II compresses the heat-insulating material 23 to the general shape shown in Fig. 2. Any subsequent settling of the heat-insulating material II results in an expansion of the heat-insulating material 23 toward the shape shown in Fig. 5, as previously described.
In the insulating arrangement previously described the breaker strip I was set forth as secured in position before the cabinet was inverted and the heat-insulating material II introduced. When the cabinet was shifted to the position shown in Fig. 1 it was necessary to remove the breaker strip, introduce the heat-insulating material 23, and then replace the breaker strip. The original assembly of the breaker strip is required because in the particular cabinet construction illustrated, the breaker strip constitutes the support holding the inner and outer walls in spaced relationship. It will be apparent, therefore, that should a form of cabinet construction be employed in which other elements are utilized for holding the Walls in spaced relationship, the breaker strip need not be installed until after the heat-insulating material II has been introduced and the resilient compressible heat-insulating material 23 has been placed in the space 20.
While I have shown and described a specific embodiment of my invention, I do not desire my invention to be limited to the particular construction shown and I intend by the appended claims to cover all modifications within the spirit and scope of my invention.
What I claim as new and desire to secure by Letters Patent of the United States is:
1. A refrigerated cabinet comprising an outer wall, an inner wall spaced from said outer wall, a breaker strip closing the space between said walls, a moisture-impervious, flexible diaphragm engaging said walls adjacent said breaker strip and extending into the space between said walls, a heat-insulating material filling the space between said walls, and a resilient compressed heat-insulating material filling the space between said breaker strip and said diaphragm and exerting pressure on said diaphragm.
2. A refrigerated cabinet comprising an outer wall, an inner wall spaced from said outer wall, a breaker strip closing the space between said walls, a moisture-impervious, flexible diaphragm, a retaining strip maintaining one edge of said diaphragm in engagement with said outer wall, a second retaining strip maintaining another edge of said diaphragm in engagement with said inner wall, said diaphragm being spaced from said breaker strip and extending into the space between said walls, a heat-insulating material filling the space between said walls, and a resilient compressed heat-insulating material filling the space between said breaker strip and said diaphragm and exerting pressure on said diaphragm. 3. A refrigerated cabinet comprising an outer wall, an inner wall spaced from said outer wall, a breaker strip closing the space between said walls, a moisture-impervious, flexible diaphragm engaging said walls adjacent said breaker strip and extending into the space between said walls, a heat-insulating material of the aerogel type filling the space between said walls, and aresilient compressed heat-insulating material filling the space between said breaker strip and said diaphragm.
4. A refrigerated cabinet comprising an outer wall, an inner wall spaced from said outer wall, a breaker strip closing the space between said walls, a moisture-impervious, flexible diaphragm engaging said Walls adjacent said breaker strip and extending into the space between said walls, a heat-insulating material filling the space between said. walls, said material being of a type subject to settling due to vibration during handling and operation of the cabinet, and a resilient compressed heat-insulating material filling the space between said breaker strip and said diaphragm, said last-named heat-insulating material expanding to fill any voids resulting from settling of said flrstmamed heat-insulatin material.
5. A refrigerated cabinet comprisin an outer wall, an inner wall spaced from said outer wall, said walls being formed to provide an access opening at the top of said cabinet, 3, breaker strip closing the space between said wall adjacent said access opening, a moisture-impervious, flexible diaphragm secured to said walls adjacent said breaker strip, said diaphragm being spaced from said strip and extending into the space between said walls, a heat-insulating material of the aerogel type filling the space between said walls, and a resilient compressible heat-insulating material filling the space between said diaphragm and said breaker strip, said last-named heat-insulating material being placed in said last-named space under compression and having the characteristic of expanding to fill any voids resulting from the settling of said first-mentioned heat-insulating material.
6. A refrigerated cabinet comprising an outer wall, an inner wall spaced from said outer wall, a breaker strip closing the space between said walls, a moisture-impervious, flexible diaphragm, a retaining strip maintaining one edge of said diaphragm in engagement with said outer wall, a second retaining strip maintaining another edge of said diaphragm in engagement with said inner wall, said diaphragm being spaced from said breaker strip and extending into the space between said walls, a heat-insulating material of the aerogel type filling the space between said walls, and a resilient compressed heat-insulating material filling the space between said breaker strip and said diaphragm, said last-mentioned heat-insulating material tending to expand and 6. thereby increase the extension of said diaphragm into said space between said walls.
'7. In the assembly of a refrigerated cabinet including spaced inner and outer walls, a breaker strip for closing the space between said walls, and a moisture-impervious, flexible diaphragm secured to the Walls adjacent the breaker strip and spaced from the breaker strip in the assembled position of the breaker strip, the method of insulating the cabinet which comprises filling the space between the walls with heat-insulating material, placing an excess of a resilient compresssible heat-insulating material adjacent said diaphragm on the breaker strip side thereof, placing said breaker strip against said resilient heatinsulating material, pressing said breaker strip into engagement with the walls of said cabinet to compress said resilient heat-insulating material and cause said resilient heat-insulating material to exert pressure on said diaphragm, and securing said breaker strip in position in engagement with said walls.
8. In the assembly of a refrigerated cabinet including spaced inner and outer walls formed to provide an access opening for the cabinet, a breaker strip for closing the space between the Wa11s adjacent the access opening, and a moisture-impervious, flexible diaphragm engaging the walls adjacent the breaker strip and spaced from the breaker strip in the assembled position of the breaker strip, the method of insulating the cabinet which comprises arranging the cabinet with the access opening downward, filling the space between said walls with heat-insulating material,
arranging the cabinet with the access opening upward, placing an excess of a resilient compressible heat-insulating material adjacent said diaphragm on the breaker strip side thereof, placing said breaker stri against said resilient heatinsulating material, pressin said breaker strip into engagement with the walls of said cabinet to compress said resilient heat-insulating material and cause said resilient heat-insulating material to exert pressure on said diaphragm, and securing said breaker strip in position in engagement with said walls.
9. In the assembly of a refrigerated cabinet including spaced inner and outer walls, a breaker strip for closing the space between said walls, and a moisture-impervious, flexible diaphragm secured to the walls adjacent the breaker strip and spaced from the breaker strip in the assembled position of the breaker strip, the method of insulating the cabinet which comprises filling the space between the walls with a heat-insulating material of the aerogel type, placing an excess of a resilient compressible heat-insulatin material adjacent said diaphragm on the breaker strip side thereof, placing said breaker strip against said resilient heat-insulating material, pressing said breaker strip into engagement with the walls of said cabinet to compress said resilient heatinsulating material and cause said resilient heatinsulating material to exert pressure on said diaphragm, and securing said breaker strip in position in engagement With said walls.
10. In the assembly of a refrigerated cabinet including spaced inner and outer walls, a breaker strip for closing the space between said walls, and a moisture-impervious, flexible diaphragm engaging the walls adjacent the breaker strip and spaced from the breaker strip in the assembled position of the breaker strip, the method of insulating the cabinet which comprises filling the space between the walls with a heat-insulating material of theaerogel type, removing the breaker strip, placing an excess of a resilient compressible heat-insulating material adjacent said diaphragm on the breaker strip side thereof, and replacing the breaker strip to compress said resilient heat-insulating material and cause said resilient heat-insulating material to exert pressure on said diaphragm.
11. In the assembly of a refrigerated cabinet including spaced inner and outer walls, a breaker strip for closing the space between said walls, and a moisture-impervious, flexible diaphragm secured to the walls adjacent the breaker strip and spaced from the breaker strip in the assembled position'of the breaker strip, the method of insulating the cabinet which comprises filling the space between the diaphragmand the plane occupied by the breaker strip in the assembled position of said breaker strip with a resilient compressible heat-insulating material, closing said space with said breaker strip, and filling the space between said walls with a heat-insulating material of the aerogel type sufiicient in amount to compress said first-mentioned heat-insulating material.
12. In the assembly of a refrigerated cabinet including spaced inner and outer walls formed to provide an access opening for the cabinet, a breaker strip for closing the space between the walls adjacent the access opening, and a moisture-impervious, flexible diaphragm engaging the walls adjacent the breaker strip and spaced from the breaker strip in the assembled position of the breaker strip, the method of insulating the cabinet which comprises arranging the cabinet with the access opening downward, filling the space between the walls with a heat-insulating material of the aerogel type, arranging the cabinet with the access opening upward, placing an excess of a resilient compressible heat-insulating material adjacent said diaphragm on the breaker strip side thereof, placing said breaker strip against said resilient heat-insulating material, pressing said breaker strip into engagement with the walls of said cabinet to compress said resilient heat-insulating material andcause said resilient heat-insulating material .to exert pressure on said diaphragm, and securing said breaker strip in positionin engagement with said walls.
13. In the assembly of a refrigerated cabinet including spaced inner and outer walls formed to provide an access opening for the cabinet, a. breaker strip for closing the space betweensaid walls adjacent the access opening, and a moisture-impervious, flexible diaphragm secured to the walls adjacent the breaker strip and spaced from the breaker strip in the assembled position of the breaker strip, the method of insulating the cabinet which comprises arranging the cabinet with the access opening downward, filling the space between the walls with a heat-insulating material of the aerogel type, arranging the cabinet with said access opening upward, removing said breaker strip, placing an excess of a resilient compressible heat-insulating material adjacent said diaphragm on the breaker strip side thereof, and replacing saidibreaker strip to compress said last-named heat-insulating material and cause said resilient heat-insulating material to exert pressure on said diaphragm.
HORACE W. EAGLES.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS
US22869A 1948-04-23 1948-04-23 Refrigerator cabinet construction Expired - Lifetime US2622754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US22869A US2622754A (en) 1948-04-23 1948-04-23 Refrigerator cabinet construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22869A US2622754A (en) 1948-04-23 1948-04-23 Refrigerator cabinet construction

Publications (1)

Publication Number Publication Date
US2622754A true US2622754A (en) 1952-12-23

Family

ID=21811862

Family Applications (1)

Application Number Title Priority Date Filing Date
US22869A Expired - Lifetime US2622754A (en) 1948-04-23 1948-04-23 Refrigerator cabinet construction

Country Status (1)

Country Link
US (1) US2622754A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2720334A (en) * 1952-04-24 1955-10-11 Amana Refrigeration Inc Breaker strip
US2793781A (en) * 1952-07-15 1957-05-28 Admiral Corp Refrigerator liner sealing means
US2810266A (en) * 1954-11-12 1957-10-22 Gen Motors Corp Refrigerator cabinet structure
US2817123A (en) * 1955-03-24 1957-12-24 Gen Motors Corp Refrigerating apparatus
US3243855A (en) * 1965-02-08 1966-04-05 Dow Chemical Co Cold space door
US3328933A (en) * 1963-07-02 1967-07-04 Lutze Gunter Wall panels
US5586680A (en) * 1993-12-22 1996-12-24 Aktiebolaget Electrolux Box constituting vacuum insulated walls of a refrigerator or freezer cabinet

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1845353A (en) * 1928-12-14 1932-02-16 Virgil K Snell Heat-insulating construction
US1967611A (en) * 1932-03-15 1934-07-24 Joseph L Finck Heat insulating structure
US2065608A (en) * 1932-11-25 1936-12-29 Termisk Isolation Ab Heat insulating cabinet
US2267279A (en) * 1939-11-13 1941-12-23 Servel Inc Refrigerator
US2319001A (en) * 1940-10-07 1943-05-11 Gen Electric Refrigerator cabinet
US2439604A (en) * 1943-03-02 1948-04-13 Wood Conversion Co Insulating confined spaces
US2439603A (en) * 1943-03-02 1948-04-13 Wood Conversion Co Insulating confined spaces

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1845353A (en) * 1928-12-14 1932-02-16 Virgil K Snell Heat-insulating construction
US1967611A (en) * 1932-03-15 1934-07-24 Joseph L Finck Heat insulating structure
US2065608A (en) * 1932-11-25 1936-12-29 Termisk Isolation Ab Heat insulating cabinet
US2267279A (en) * 1939-11-13 1941-12-23 Servel Inc Refrigerator
US2319001A (en) * 1940-10-07 1943-05-11 Gen Electric Refrigerator cabinet
US2439604A (en) * 1943-03-02 1948-04-13 Wood Conversion Co Insulating confined spaces
US2439603A (en) * 1943-03-02 1948-04-13 Wood Conversion Co Insulating confined spaces

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2720334A (en) * 1952-04-24 1955-10-11 Amana Refrigeration Inc Breaker strip
US2793781A (en) * 1952-07-15 1957-05-28 Admiral Corp Refrigerator liner sealing means
US2810266A (en) * 1954-11-12 1957-10-22 Gen Motors Corp Refrigerator cabinet structure
US2817123A (en) * 1955-03-24 1957-12-24 Gen Motors Corp Refrigerating apparatus
US3328933A (en) * 1963-07-02 1967-07-04 Lutze Gunter Wall panels
US3243855A (en) * 1965-02-08 1966-04-05 Dow Chemical Co Cold space door
US5586680A (en) * 1993-12-22 1996-12-24 Aktiebolaget Electrolux Box constituting vacuum insulated walls of a refrigerator or freezer cabinet

Similar Documents

Publication Publication Date Title
US2817123A (en) Refrigerating apparatus
US4050145A (en) Method of making refrigeration apparatus enclosure structure
US2939811A (en) Heat-insulating units for refrigerator cabinets
DE59604893D1 (en) THERMAL INSULATING HOUSING
KR20120046621A (en) Refrigerator with vacuum insulation panel
US2622754A (en) Refrigerator cabinet construction
US3913996A (en) Refrigeration apparatus enclosure structure
US3177678A (en) Refrigerating apparatus
US3376711A (en) Refrigerator cabinet construction
US2169967A (en) Electrical lead-in bushing
US2279272A (en) Refrigerating apparatus
US2639593A (en) Refrigerator insulation
US2179542A (en) Insulated structure and method of making the same
US1908248A (en) Refrigerating apparatus
KR20040002175A (en) Refrigerator for kimchi
US2441080A (en) Refrigerator cabinet including means for preventing condensation
US3474640A (en) Household refrigerator cabinet construction
US1515165A (en) Refrigerating apparatus
US1896046A (en) Refrigerator
US2728958A (en) Insulating structure
US2346641A (en) Refrigeration apparatus
US2795020A (en) Methods of making insulated cabinets
KR0139857Y1 (en) Storage for preserving foods
CN216245021U (en) Ice maker with sealed and waterproof plastic part
US1829748A (en) Refrigerating apparatus