US2089909A

US2089909A - Insulation or covering

Info

Publication number: US2089909A
Application number: US51951A
Authority: US
Inventors: James T Mansfield
Original assignee: Individual
Current assignee: Individual
Priority date: 1935-11-27
Filing date: 1935-11-27
Publication date: 1937-08-10
Anticipated expiration: 1954-08-10

Description

Aug. 10, 1937. J. T. MANSFIELD 2,089,909

INSULATION OR COVERING FiledNov. 27, 1955 2 Sheets-Sheet 1 INVENTOR ATTOR NE! I I I mvENT 25;, BY Wkwfi J. T. MANSFIELD 2,089,909

INSULAIION OR COVERING Aug. 10, 1937.

Filed NOV. 2'7, 1955 2 Sheets-Sheet 2 ATTORNEY Patented Aug. 10, 1937 UNITED STATE.

ATE? @FFIQE INSULATION R COVERING 1 Claim.

This invention relates to insulations, more particularly to fabricated units for insulating pipes, and has for an object to provide insulation of this character for hot or cold pipes, ice water pipes, brine pipes, or any other pipe, and which will be sound-proof, which will eliminate the use of canvas covering and the painting of the same, which will be inexpensive to install, inexpensive to manufacture, and may be installed. in minimum time and with minimum manual labor.

A further object is to provide fabricated units comprising sections each including an inner core and an outer shell spaced apart to provide an air space between them, both the core and the shell being faced with aluminum sheet metal facings which are corrugated, indented, or otherwise deformed beyond a plain surface so as to provide additional insulating air spaces within the structure.

A further object is to provide a fabricated unit in which the two sections will be hinged together by thealuminum facing of both the outer shells, said facing also projecting beyond one of the shells to form a flap which overlaps and is cemented to the facing of the other shell to seal the joint between the shells there being a metal tie strap concealed between'the outer facing of both shells and provided at one end with an eye through which the free end of the strap is looped before the flap is cemented down in order to tightly bind the sections of the unit upon the pipe and permit of the operator using both hands to cement the flap, thus promoting speed in installing the insulation and cutting down the cost of installation.

A further object is to provide fabricated units in which the base material of the core and the shell may be stiifened by silicate of soda to render it water-proof and stiff and rigid, the same cement being also used to adhesively secure the facings to the core and to the shell of each section, thus the fabricated unit will be impervious to moisture.

With the above and other objects in View the invention consists of certain novel details of construction and combinations of parts hereinafter fully described and claimed, it being understood that various modifications may be resorted to within the scope of the appended claims without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings forming part of this specification,

Figure 1 is a side elevation of adjoining units constructed in accordance with my invention applied to a pipe, portions being broken away to expose the component parts.

Figure 2 is an enlarged cross sectional view taken through the fabricated insulating unit applied to a pipe.

Figure 3 is a cross sectional view of the units showing the sections open to facilitate application to the pipe.

Figure 4 is a perspective view of one of the fabricated insulating units.

Figure 5 is a fragmentary cross sectional view with parts in elevation, showing a modified form of the invention.

Figure 6 is a side elevation of a modified form of the invention used for insulating high or low pressure steam pipes.

Figure 7 is a cross sectional view taken on the line 'll of Figure 6.

Figure 8 is a cross sectional view of another modified form of the invention used for insulating low pressure steam pipes.

Figure 9 is a side elevation of an elbow constructed in accordance with the invention.

Figure 10 is a cross sectional view through a modified form of the invention used for insulating cold Water pipes.

Referring now to the drawings in which like characters of reference designate similar parts in the various views, Ill designates channeled mating sections of the insulating unit. Each section is provided at one end with a channeled tongue l I and at the opposite end with an arcuate recess I2, to interfit with complementary parts on adjoining units and lock the units together at their meeting ends as will be understood.

Each section Iii comprises an inner core l3 which may be formed of wire mesh, felt, asbestos, paper treated with silicate of soda or other cement to make it water-proof and stiff. An outer shell I4 is disposed concentric with and spaced from the inner core to provide an air chamber lfi'between the core and the shell. The shell also, like the core, may be formed of any or all of the above mentioned materials to provide a rigid water-proof structure. The core is provided with inner and outer facings I6 and ll of sheet metal, preferably aluminum foil of the type corrugated, indented, creased or otherwise deformed to provide a myriad or labyrinth of air cells. Likewise the outer shell is provided with inner and outer. facings l8 and IQ of the same aluminum foil just described and in the present embodiment the inner facing I8 is shown as being deformed quite extensively to provide flutings, open pleats or similar large corrugations V labyrinth of air cells is in of both mating sections ii! of the unit register when the sections are closed upon the pipe 22 and permit inter-communication between the air spaces of both sections of the unit.

The outer facings of the shells of both sections are integrally connected at the longitudinal edges of the shells as shown at 23 to form a hinge which secures the sections together and permits of the sections being spread apart as shown in Figure 3 to be applied to the pipe 22. The outer facing of one of the shells is continued beyond the shell to form a flap 24 which may be'adhesiVely secured to the outer facing of the mating section when the sections are closed upon the pipe, as shown in Figure 2, and seal the joint between the sections. 7

A tie strap 24 is concealed between the outer facings of the shells of the sections, one end of the strap being equipped with an eye 25. When the sections are closed upon the pipe 22 the free end of the strap may be passed through the eye and looped back upon itself so that the strap will hold the sections clamped to the pipe. The operator then may have both hands free to cement the flap 2 3 in place. i

In Figure 5 there is shown a modified form of the invention, in which each section comprises a core 23 having outer and

inner facings

21 and 28 of sheet aluminum. The core as above explained' may be formed of any suitable insulating material and is preferably water-proofed and stiffened by means of silicate of soda, which substance may also effectively be used as a cement for cementing the facings on the core.

A shell 29 is spaced from the core and is disposed concentrically therewith to provide an air space 3!) between the core and the shell. The shell is formed of the same insulating material as the'core. Inner and outer facings 3| and 32 of sheet aluminum are cemented to the shell preferably by silicate of soda. A deformed aluminum sheet 33 is secured to the inner facing of the shell and this sheet may have longitudinal convolutions, pleats, or folds or may be otherwise constructed to provide longitudinal air channels between the core and the shell.

A plurality of sheet aluminum tubes 34 are disposed to extend longitudinally of the outer facing Z'i'of the core, and these tubes are provided with perforations 35. A housing 36 formed of an aluminum sheet is disposed in the air space between the core and the shell and embraces all of the tubes 34. The tubes and the housing coact in forming a labyrinth of air cells in the section between the core and the shell and this 7 communication with the air space Sitthrough openings 31 formed in the end tubes of the series of tubes. Other openings 38 formed in said end tubes establish communication between the air spaces 30 of both sections of the unit as well as between the labyrinth of air cells of both sections of the unit.

.In the modified form of the invention shown in Figure 5 the sections of the unit are equipped with a metal tie strap 39' for clamping the sections to the pipe and also the outer facing of one of the shells is extended to provide a flap 4!) which may be overlapped upon the facing of the mating section and cemented thereto to seal the joint between the sections as above described.

In the modified form of the invention shown in Figure 6 the shell 39 and the core ii! are formed of any suitable insulating material and the connecting webs 4! are perforated as shown at 42 to provide circulation in the spaces between the core and shell as previously described so that temperature equalization may take place longitudinally of the insulating conduit as previously described. In this modification of the invention a corrugated roughened or otherwise deformed aluminum sheet is disposed on the inner surface of the core and the ends thereof carried across the opposing faces of the terminal webs of each half section of the unit as shown at 44 and 45 in Figure '7. The outer surface'of the shell is faced with sheet aluminum 46 throughout the entire superficial area of the shell. Thus there is an aluminum facing both inside and outside the insulating unit. In practice it has been found that an insulating unity of this type'may equally well be applied to both high and low pressure steam pipes. Tie straps 46 of conventional type may be secured at intervals to the outer surface of the shell to hold the two mating sections of the shell closed upon the steam pipesto be insulated. r r W In Figure 8 there is shown still another modification of the invention, in this instance, the shell M and the core 48 being similar in construction to the modified form shown in Figures 6 and 7 but withthe following difference, the sheet aluminum 49 is only used as a facing for the inner face of thecore and for the terminal webs 50 of the half sections of the unit as shown at 5!. The half sections of the unit in this embodiment are held assembled upon the pipe by a wrapping of fabric52 lapped and cemented at the edges as shown at 53. This modification of the invention is found particularly well adapted for insulating low pressure steam pipes.

The elbow 54 shown in Figure 9 is formed of a core 55 of suitable insulating material and both the inner face and the outer face of the elbow are faced with sheet aluminum as shown at 56 and 57, the sheet aluminum being continued over the end edges of the elbow as shown at 58. The elbow is formed of two mating half sections which are enclosed upon the pipe to be insulated by conventional tie straps 59. V

In the modified form of the invention shown in Figure 10 the sheet aluminum facing may be dispensed with, this modifiedform including an outer shell 63 and an inner core 65 connected to gether by webs 52 which are provided with perforations 63 to equalize temperature throughout the insulating spaces between the core and the shell. The unit is formed of two mating half sections which may be closed upon the pipe to be insulated by a fabric strip 64, the ends of which are lapped and adhesively secured together as shown at 65. This form of the invention is particularly well suited for insulating cold water pipes. The core and the shell are of substantially equal thickness and are spaced radially apart a distance greater than the thickness of either the shell or the core to provide arcuate insulating spaces of about a quadrant in length.

Whenever in the specification sheet aluminum is mentioned it is intended to include aluminum foil and to be interpreted as being synonymous with aluminum foil or other relatively thin flexible sheet aluminum.

Also whenever in the specification the word sheet is used it is intended to include one or more sheets, and extend to the use of blocks of the material, for the purpose of accommodating the invention to any degree of heat to be insulated against, and to accommodate the invention for use in tanks and boiler walls.

From the above description it is thought that the construction and operation of my invention will be fully understood without further explanation.

What is claimed is:

A pipe insulating unit comprising channeled mating sections each having an inner core, an

outer shell spaced from the core, metal facings of sheet aluminum on the inner and outer surfaces of the core and the shell, a plurality of longitudinally extending tubes of sheet aluminum in the space between the core and the shell, a housing of sheet aluminum disposed to bridge all of the tubes, said tubes being perforated transversely, said tubes and said housing forming a labyrinth of air cells in the space between the core and the shell, a metal tie strap concealed between the shells and the outer facings of the shells for clamping the mating sections around i the pipe, and a flap integral with the outer facing of one of the shells adapted to overlap and be adhesively secured to the outer facing of the 15 other shell to seal the joint between the sections.

JAMES T. MANSFIELD.