AU630256B2 - Improvements relating to airconditioning ducting - Google Patents

Improvements relating to airconditioning ducting Download PDF

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Publication number
AU630256B2
AU630256B2 AU67626/90A AU6762690A AU630256B2 AU 630256 B2 AU630256 B2 AU 630256B2 AU 67626/90 A AU67626/90 A AU 67626/90A AU 6762690 A AU6762690 A AU 6762690A AU 630256 B2 AU630256 B2 AU 630256B2
Authority
AU
Australia
Prior art keywords
members
connector
inner end
tubular
end peripheral
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.)
Ceased
Application number
AU67626/90A
Other versions
AU6762690A (en
Inventor
Bruce Victor Benfield
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.)
Ductair Pty Ltd
Original Assignee
Heatshield Pty Ltd
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 Heatshield Pty Ltd filed Critical Heatshield Pty Ltd
Priority to AU67626/90A priority Critical patent/AU630256B2/en
Publication of AU6762690A publication Critical patent/AU6762690A/en
Application granted granted Critical
Publication of AU630256B2 publication Critical patent/AU630256B2/en
Assigned to Ductair Pty Ltd reassignment Ductair Pty Ltd Alteration of Name(s) in Register under S187 Assignors: HEATSHIELD PTY. LTD.
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0236—Ducting arrangements with ducts including air distributors, e.g. air collecting boxes with at least three openings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/70—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5224—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52297—Joining tubular articles involving the use of a socket said socket comprising slip-off prevention means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52298—Joining tubular articles involving the use of a socket said socket being composed by several elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/02—Branch units, e.g. made in one piece, welded, riveted
    • F16L41/023—Y- pieces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
    • F16L59/161—Housings for valves, tee pieces, or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Insulation (AREA)
  • Duct Arrangements (AREA)

Description

1' 34162DIV HKS:PFB COMMONWEALTH OF AUSTRALIA Patents Act 1952 Form COMPLETE SPECIFICATION
(ORIGINAL)
FOR OFFICE USE: 630256 Class Int. Class Application No Lodged Complete Application No Specification Lodged Published Priority: Related art: 0 0 0 0 0 0 0 0 999, 0 O, 09 o lJ a TO BE COMPLETED BY APPLICANT 9 0 0 *9 a 0 94 0 0 a o o~uua+ 0 o 0040 000 00 0 I 0 Name of Applicant: Address of Applicant: Actual Inventor: Address for Service: 18-24 Plymouth Road, Wingfield, State of South Australia,
REG
Commonwealth of Australia -o 22.10 BRUCE VICTOR BENFIELD 7 1 Care of GOL-L-1SON-& CO., 1---Kg-Wiliam- Stfeet-Ade aid e-Seuth-Au-st-atia--GG DA6 Izing \\YoM A5tdf, lQde :nA soQC HEATSHIELD PTY. LTD.
Complete Specification for the invention entitled: IMPROVEMENTS RELATING TO AIRCONDITIONING DUCTING The following statements is a full description of this invention, including the best method of performing it known to us: -2- This invention relates to an airconditioning ducting.
The problem to which this invention is directed relates to the cost at the present time of providing airconditioning ducting which has an insulated outer coating usually of foamed plastics materials such as polyurethane foam.
It is conventional especially in the manufacture of dividers to provide a sheet metal body which is then subsequently coated with foam plastics material.
Such a manufacturing technique requires then that the quite complex shapes must be cut from sheet steel, formed and then joined together so as to provide a continuous sheet steel surface over which the plastics material is then coated.
In accord with this invention it has now been discovered that an alternate technique can be used which very considerably lessens the cost of manufacture of such articles.
The invention accordingly can be said to reside in a method of manufacture of a three-way connector used for connecting together lengths of airconditioning ducting in an air distribution system, comprising the steps of: o positioning three open ended tubular connector members S in a substantially Y configuration, wherein the central axis of each member is angled with respect to the axes of the other two members with inner end peripheral edge portions of each connector member contacting respectively inner end peripheral edge portions of the other two said connector 'o members, the inner end peripheral edges of the members, when so positioned, defining opposed intervening gaps of substantially triangular shape, securing together those o connector member inner end edge portions which are in contact with one another, and applying a covering layer of pliable or o flexible sheet material across the intervening gaps between -3the inner end edges of the tubular members so as to close off said gaps.
In preference, the sheet material includes a foam plastic insulating layer.
In preference, each of the connectors is made from sheet steel and is formed into a cylindrical conduit shape providing thereby effective means for access or egress of airconditioning air.
In preference, as an initial manufacturing step, three connectors are joined by having an outer side of an inner edge respectively joined to the outer side of the inner edge of the other two connectors by being welded thereto.
The invention also resides in a three-way connector for connecting together lengths of ducting in an air distribution system, comprising: three open ended tubular duct connector members joined together in an approximately Y configuration wherein the central axis of each member is angled with respect to the axes of the other two members, each tubular member having an inner end peripheral edge portion which is contiguous with and is secured to an inner end peripheral edge portion of each of the other two tubular members at approximately diametrically opposite locations, the inner end peripheral edges of the tubular members defining intervening gaps of approximately triangular shape, and covering layers of pliable or flexible material attached to the outer surfaces of the connector members for closing off the intervening gaps between the inner end peripheral edges of the tubular members, each said tubular connector member having an outer end peripheral edge arranged for connection to a respective length of ducting.
In preference, the sheet material is joined to the connectors by an adhesive.
I I -3A- It will be understood herein that the term "inner peripheral edge" in reference to a connector member means a peripheral edge of the connector member which is axially spaced from its other outer peripheral edge to which is connected a length of ducting conduit, and which is arranged to be covered by the sheet material fcorming the wall of the connector assembly.
A better understanding of this invention will now be gained by reference to a description of the embodiment of the invention as well as claims appended to this specification.
The embodiment will now be described with assistance of drawings in which: FIGURE 1 is a perspective view of a connector, FIGURE 2 is a plan view of the three connectors joined by welding to their respective inner edge and outer side to the other connectors.
FIGURE 3 illustrates that the connectors as shown in FIG. 2 in perspective with pliable plastics material extending across the gap thus left, FIGURE 4 is a partly cut away view showing the ducting at the next stage in which the plastics material has been sprayed and allowed to polymerize and foam over the surface of the particle as shown in FIG. 3, 1 0 FIGURE 5 is a perspective view along the same lines as in FIG. 3 with however the outer foamed plastics coating as in FIG. 4 cut away to expose the outer ends of each of the connectors, FIGURE 6 is a plan view of the duct part is shown in FIG. 5, and 1,5 o 0 FIGURE 7 is a cross-sectional view along the lines 7/7 as shown in FIG. 6.
S Referring in detail to the drawings, each of the connectors as shown at 1,2 and o 3 comprise a cylindrical article which is open at both ends and which has a 20., fluted outer end at 4, 5 and 6 to provide assistance in inter-connecting with the 000) joining ducting conduits. Clip shapes at 7 include inner tongues 8 which are adapted to effect an ensnaring of an adjoining conduit.
oo-, The three connectors 1,2 and 3 have an outer edge at 9, 10 and 11 respectively and an inner edge at 12, 13 and 14 respectively and an outer side of such inner 0° edge typically for connector 1 at 15 is welded at 16 by convention spot welding a to an outer side of the inner edge 13 of connector 2 and like wise at 17 to the Sinner edge 14 and the outer side of this of the connector 3.
00* 0 0 The next step in the method of manufacture comprises extending across an a~ o area now left between the connectors 1,2 and 3 in such a way as to provide a 0 relative smooth inner surface extending between the respective inner edges.
This is achieved in a very convenient way by simply taking a broad adhesive tape typically of the type used for holding packaging together and including one sided adhesive and then simply stretching this over and around the respective outer edges of the connectors typically in the manner shown so as to have this extend over the two gaps thus formed.
Such plastics tape typically is made from ply-vinyl film and while some times exhibiting some resilient characteristics is essentially pliable and will therefore mould itself across the intervening space in such a way as to provide the smooth inner surface that is desired.
This tape shown typically at 18 replaces what was previously required namely 1 0 shaped members of sheet steel.
The next step which is shown with it result at FIG. 4 includes spraying a prepolymerized form of urethane foam around the outside surface of the article as ,i shown at FIG. 3 the foam being shown at 19. Each of the connectors 1,2 and 3 K 1 5 are then cleared by allowing the polyurethane foam to set and indeed harden S ,and this is then cut at edges such as those shown at 20, 21 and 22 to allow for conventional functioning connectors.
V1 4 The ducting article in the form of a Y shaped divider shown generally at 2 is i t2 therefore constituted by in this case three connectors 1,2 and 3 each of cylindrical shape and each being connected at a respective inner edge and an outer side of this to adjoining connectors the two gaps at 24 being covered by a pliable sheet material 25 and the whole of this being coated by a foamed and K moulded polyurethane plastics material.
S The advantages of this invention are a very considerable saving in cost.
Further, however as the plastics tape material is a better insulator than sheet metal, there is also an additional insulating effect achieved essentially because i 3 0 of the removal of the previously intervening sheet material so the product as a ii result is also an improved product.

Claims (10)

1. A method of manufacture of a three-way connector used for connecting together lengths of airconditioning ducting in an air distribution system, comprising the steps of: positioning three open ended tubular connector members in a substantially Y configuration, wherein the central axis of each member is angled with respect to the axes of the other two members with inner end peripheral edge portions of each connector member contacting respectively inner end peripheral edge portions of the otner two said connector members, the inner end periperhal edges of the members, when so positioned, defining opposed intervening gaps of substantially triangular shape, securing together those connector member inner end edge portions which are in contact with one another, and applying a covering layer of pliable or flexible sheet material across the intervening gaps between the inner end edges of the tubular members so as to close off said gaps.
2. A method according to claim 1 wherein the securing :i0: together of the inner end edge portions of the adjacent -5 o connector members is effected by welding.
3. A method according to either claim 1 or claim 2 wherein each said connector member is of cylindrical shape and formed from sheet steel.
4. A method according to any one of claims 1 to 3 wherein the step of applying a covering layer of sheet material includes applying an outer layer of insulating foamed plastics material. 0 5. A method according to any one of the preceding claims wherein the covering layer of flexible sheet material is secured to the outer surfaces of the connector members by adhesive tape.
7- 6. A method of manufacturing a connector according to any one of the preceding claims wherein each of the tubular members has an axial length which is small relative to its diameter. 7. A three-way connector for connecting together lengths of ducting in an air distribution system, comprising: three open ended tubular duct connector members joined together in an approximately Y configuration wherein the central axis of each member is angled with respect to the axes of the other two members, each tubular member having an inner end peripheral edge portion which is contiguous with and is secured to an inner end peripheral edge portion of each of the other two tubular members at approximately diametrically opposite locations, the inner end peripheral edges of the tubular members defining intervening gaps of approximately triangular shape, and covering layers of pliable or flexible material attached to the outer surfaces of the connector members for closing off the intervening gaps between the inr.r end peripheral edges of the tubular members, each said tubular connector member having an outer end peripheral edge arranged for connection to a respective length of ducting.
8. A three-way connector according to claim 7 wherein the covering layers are adhesively connected to the tubular members.
9. A three-way connector according to claim 8 wherein the 0 covering layers comprise a plurality of individual plastics strips adhesively connected to the tubular members. A three-way connector according to any one of claims 7 to 9 wherein the covering layers each include an outer layer of foam plastics material for insulating purposes.
11. A three-way connector according to any one of claims 7 to 10 wherein each of the tubular connector members is of cylindrical shape and formed from sheet steel. _1 p 8
12. A three-way connector according to any one of claims 7 to 11 wherein each said tubular member has an axial length. which is small relative to its diameter.
13. A three-way connector according to any one of claims 7 to 12 wherein the contiguous inner end edge portions of adjacent tubular members are secured together by welding. DATED this 24th day of August, 1992 HEATSHIELD PTY LTD By its Patent Attorneys R K MADDERN ASSOCIATES o Vs 0 00 O 00 00 o o 0 0 0 0 oo 0 a a
AU67626/90A 1986-10-17 1990-11-30 Improvements relating to airconditioning ducting Ceased AU630256B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU67626/90A AU630256B2 (en) 1986-10-17 1990-11-30 Improvements relating to airconditioning ducting

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPH8554 1986-10-17
AUPH855486 1986-10-17
AU67626/90A AU630256B2 (en) 1986-10-17 1990-11-30 Improvements relating to airconditioning ducting

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
AU79878/87A Division AU601229B2 (en) 1986-10-17 1987-10-16 Improvements relating to airconditioning ducting

Publications (2)

Publication Number Publication Date
AU6762690A AU6762690A (en) 1991-03-14
AU630256B2 true AU630256B2 (en) 1992-10-22

Family

ID=25635448

Family Applications (1)

Application Number Title Priority Date Filing Date
AU67626/90A Ceased AU630256B2 (en) 1986-10-17 1990-11-30 Improvements relating to airconditioning ducting

Country Status (1)

Country Link
AU (1) AU630256B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012016363A1 (en) * 2010-08-04 2012-02-09 上海盈达空调设备有限公司 Combination structure for air conditioning ventilation duct
EP4092348A1 (en) * 2021-05-19 2022-11-23 Zehnder Group International AG Air distributor unit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU664353B3 (en) * 1995-06-13 1995-11-09 Nordin Engineered Air Technologies Pty Ltd Split branched duct fitting
AU743294B2 (en) * 1998-05-12 2002-01-24 Air Diffusion Agencies Pty Ltd Flexible ventilation ducting/conduit which incorporates branch conduit connector portions

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012016363A1 (en) * 2010-08-04 2012-02-09 上海盈达空调设备有限公司 Combination structure for air conditioning ventilation duct
US8485561B2 (en) 2010-08-04 2013-07-16 Shanghai Yinda Air Conditioning Enterprise Co., Ltd. Combined structure used for air-conditioning ventilation
EP4092348A1 (en) * 2021-05-19 2022-11-23 Zehnder Group International AG Air distributor unit

Also Published As

Publication number Publication date
AU6762690A (en) 1991-03-14

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Owner name: DUCTAIR PTY LTD

Free format text: FORMER OWNER WAS: HEATSHIELD PTY. LTD.