WO1996030735A1 - A leakage indicator - Google Patents

A leakage indicator Download PDF

Info

Publication number
WO1996030735A1
WO1996030735A1 PCT/SE1996/000417 SE9600417W WO9630735A1 WO 1996030735 A1 WO1996030735 A1 WO 1996030735A1 SE 9600417 W SE9600417 W SE 9600417W WO 9630735 A1 WO9630735 A1 WO 9630735A1
Authority
WO
WIPO (PCT)
Prior art keywords
indicator
indicating
liquid
triggering means
indicator according
Prior art date
Application number
PCT/SE1996/000417
Other languages
French (fr)
Inventor
Mats Linder
Original Assignee
Mats Linder
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 Mats Linder filed Critical Mats Linder
Publication of WO1996030735A1 publication Critical patent/WO1996030735A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/09—Component parts or accessories
    • E03B7/095—Component holders or housings, e.g. boundary boxes
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/01—Domestic plumbing installations for fresh water or waste water; Sinks for combinations of baths, showers, sinks, wash-basins, closets, urinals, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/12—Tube and panel arrangements for ceiling, wall, or underfloor heating
    • F24D3/14—Tube and panel arrangements for ceiling, wall, or underfloor heating incorporated in a ceiling, wall or floor
    • F24D3/146—Tubes specially adapted for underfloor heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/12—Tube and panel arrangements for ceiling, wall, or underfloor heating
    • F24D3/16—Tube and panel arrangements for ceiling, wall, or underfloor heating mounted on, or adjacent to, a ceiling, wall or floor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0246—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid heat-exchange elements having several adjacent conduits forming a whole, e.g. blocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

Definitions

  • the present invention relates to a leakage indicator of the kind defined in the preamble of the following Claim 1.
  • the object of the present invention is to provide a leakage indicator of the aforesaid kind which is reliable in operation, which reacts rapidly in response to the presence of water, which can be handled and fitted readily, and which is inexpensive to purchase and maintain.
  • Fig. 1 is a schematic, partly cut-away view of a loaded leakage indicator fitted in the cavity wall of a building structure and shows the indicator in a rest position and in a dry state;
  • Fig. 2 illustrates the leakage indicator of Fig. 1 in an indicating and wet state.
  • the leakage indicator 2 includes a casing in the form of a sleeve 4 in which a rod-like member 6 is displaceably mounted.
  • the end of the rod-like member inserted into the sleeve is connected with a latch hook 8 having an elongated connecting part 10 which extends through an opening in a spring attachment 12 fixed on the inside of the sleeve.
  • the connecting part has an attachment part 14 which is let, or sunk, partially into said end of the rod.
  • a pressure spring 16 is fitted between the spring attachment 12 and the inserted end of the rod-like member.
  • the indicator When no load acts on said spring, i.e. when the rod 6 is in its indicating position, the latch hook 8 rests against the end of the spring attachment 12 that lies distal from the spring.
  • the indicator is loaded with a triggering means, in the present case a sugar lump 18 of conventional kind which normally has a very long length of life in a dry state.
  • the indicator is loaded with the sugar lump, by pressing the rod 6 into the sleeve 4 against the force of the spring 16 and by pressing the outer end 20 of the rod-like member to a level flush with the outer end 21 of said sleeve.
  • the indicator also includes a suction strip 22 having a lead weight 24 at one end thereof.
  • the other end of the suction strip is wound around approximately half the perimeter of the sugar lump 18 and said sugar lump and the strip hanging therefrom are placed in the other end 26 of the sleeve 4.
  • the sugar lump shall be primed so that the latch hook 8 will lie against the sugar lump and press said lump against the spring attachment 12 under the action of the force exerted by the spring 16.
  • the indicator is now ready for use and a mounting hole adapted to the outer diameter of the indicator is drilled in a selected wall 28 at the installation site.
  • the hole is drilled at a distance of about 30 mm above the bottom of the cavity to be monitored and a conventional setting adhesive is applied in a ring around the periphery of the outer end 21 of the sleeve.
  • the suction strip 22 is then inserted through the hole and the sleeve inserted therein and pressed into abutment with the wall 28.
  • the lead weight 24 on the suction strip will rest on the bottom of the wall cavity.
  • an extension tape is provided as an accessory.
  • water is drawn up through the suction tape and wets the sugar lump 18, which dissolves within the space of about ten minutes after the water has reached the suction tape.
  • This causes the latch hook 8 to be released and therewith enable the spring 16 to expand and project the rod-like member 6 from the sleeve, until the latch hook lies against the spring attachment 12.
  • the outer end 21 of the rod-like member may be conveniently coloured green and the outer cylindrical surface of said rod ⁇ like member coloured red.
  • the indicator In dry conditions, i.e. in which the indicator is in a starting position, only the green colour can be seen, therewith indicating a normal state of the indicator.
  • the red colour on the outwardly projecting part of the rod-like member can be seen, therewith indicating an alarm state.
  • the triggered indicator can be reloaded and has an individual serial number which can be noted when reloading the indicator and connected with a damage report used as a basis for water damage statistics.
  • the indicator sleeve 4 and rod-like member 6 are preferably made of powder-lacquered aluminium and the release mechanism of stainless material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Public Health (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Supports For Pipes And Cables (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

The invention relates to an indicator (2) for indicating the presence of water in a cavity and includes a suction strip (22) which functions to suck water up to a sugar lump (18) which holds an indicating device (6) in a starting position in a sleeve (4) against the force exerted by a coil spring (16), through the medium of a latch hook (8). When water has been drawn up to the sugar lump by the suction strip and the sugar lump dissolves, the latch hook is released and the spring projects the indicating device (6) from the sleeve to an indicating position.

Description

A LEAKAGE INDICATOR
The present invention relates to a leakage indicator of the kind defined in the preamble of the following Claim 1.
Insurance statistics show that the total costs incurred by leakages in older houses and buildings is in the order of about 1.5 billion Swedish kronor. Existing pipe-housing service ducts, permanently installed dishwashers, kitchen sinks, etc., constitute presumptive sources of hidden leakages which often remain undiscovered until the building framework becomes saturated with water and the damage caused thereby is a matter of fact. It is, therefore, beneficial to be able to reduce the costs incurred by water damage with the aid of simple and inexpensive measures, both in the case of new buildings and while awaiting for more comprehensive replacement of installations in older buildings. When checking existing ducts, it is beneficial to fit a leakage indicator as a guard against future water damage in conjunc- tion with repairing a discovered leakage.
Accordingly, the object of the present invention is to provide a leakage indicator of the aforesaid kind which is reliable in operation, which reacts rapidly in response to the presence of water, which can be handled and fitted readily, and which is inexpensive to purchase and maintain.
This object is achieved with a leakage indicator of the aforedefined kind that has the characteristic features set forth in Claim 1. Advantageous further developments and improvements are achieved by the features set forth in the dependent Claims.
The invention will now be described in more detail with reference to the accompanying drawing, in which
Fig. 1 is a schematic, partly cut-away view of a loaded leakage indicator fitted in the cavity wall of a building structure and shows the indicator in a rest position and in a dry state; and
Fig. 2 illustrates the leakage indicator of Fig. 1 in an indicating and wet state.
The leakage indicator 2 includes a casing in the form of a sleeve 4 in which a rod-like member 6 is displaceably mounted. The end of the rod-like member inserted into the sleeve is connected with a latch hook 8 having an elongated connecting part 10 which extends through an opening in a spring attachment 12 fixed on the inside of the sleeve. The connecting part has an attachment part 14 which is let, or sunk, partially into said end of the rod. A pressure spring 16 is fitted between the spring attachment 12 and the inserted end of the rod-like member.
When no load acts on said spring, i.e. when the rod 6 is in its indicating position, the latch hook 8 rests against the end of the spring attachment 12 that lies distal from the spring. The indicator is loaded with a triggering means, in the present case a sugar lump 18 of conventional kind which normally has a very long length of life in a dry state. The indicator is loaded with the sugar lump, by pressing the rod 6 into the sleeve 4 against the force of the spring 16 and by pressing the outer end 20 of the rod-like member to a level flush with the outer end 21 of said sleeve.
The indicator also includes a suction strip 22 having a lead weight 24 at one end thereof. The other end of the suction strip is wound around approximately half the perimeter of the sugar lump 18 and said sugar lump and the strip hanging therefrom are placed in the other end 26 of the sleeve 4. The sugar lump shall be primed so that the latch hook 8 will lie against the sugar lump and press said lump against the spring attachment 12 under the action of the force exerted by the spring 16. The indicator is now ready for use and a mounting hole adapted to the outer diameter of the indicator is drilled in a selected wall 28 at the installation site. The hole is drilled at a distance of about 30 mm above the bottom of the cavity to be monitored and a conventional setting adhesive is applied in a ring around the periphery of the outer end 21 of the sleeve. The suction strip 22 is then inserted through the hole and the sleeve inserted therein and pressed into abutment with the wall 28. When the indicator is fitted in place, the lead weight 24 on the suction strip will rest on the bottom of the wall cavity.
When the indicator is to be mounted in elongated kitchen ducts or in other installations where a longer suction tape is required, an extension tape is provided as an accessory. In the event of a leakage wherein water collects on the bottom defining surface of the cavity concerned, water is drawn up through the suction tape and wets the sugar lump 18, which dissolves within the space of about ten minutes after the water has reached the suction tape. This causes the latch hook 8 to be released and therewith enable the spring 16 to expand and project the rod-like member 6 from the sleeve, until the latch hook lies against the spring attachment 12.
In order to enhance the signalling effect of the indicator, the outer end 21 of the rod-like member may be conveniently coloured green and the outer cylindrical surface of said rod¬ like member coloured red.
In dry conditions, i.e. in which the indicator is in a starting position, only the green colour can be seen, therewith indicating a normal state of the indicator. When the indicator is triggered, the red colour on the outwardly projecting part of the rod-like member can be seen, therewith indicating an alarm state. The triggered indicator can be reloaded and has an individual serial number which can be noted when reloading the indicator and connected with a damage report used as a basis for water damage statistics.
The indicator sleeve 4 and rod-like member 6 are preferably made of powder-lacquered aluminium and the release mechanism of stainless material.

Claims

1. A reloadable leakage indicator (2) for indicating the presence of liquid, e.g. water, in a normally closed cavity, wherein the indicator includes a suction line (22) whose one end (24) is intended to lie against a bottom surface in said cavity and whose other end is connected to an indicator triggering means (18) positioned in a casing (4), character¬ ized in that the indicator triggering means (18) is comprised of a substance which is hard when in a dry state and which has a long life span and which changes character under the influence of said liquid; and in that an indicating device (6) arranged in the casing is displaced from a starting position to an indicating position as a result of said change in character of said triggering means, therewith indicating the presence of liquid (30) on the bottom surface of said cavity.
2. An indicator according to Claim 1, characterized in that the indicator triggering means is comprised of a dry, compacted material (18) which swells in contact with liquid (30) and therewith presses the indicating device (6) from its starting position to its indicating position.
3. An indicator according to Claim 1 or Claim 2, character¬ ized in that the indicator triggering means is comprised of a sponge material (18).
4. An indicator according to Claim 1, characterized in that the indicator -triggering means is comprised of a sugar lump
(18) which dissolves upon contact with the liquid (30); and in that the indicating device (6) is biassed by a spring (16) such as to be pressed from its starting position to its indicating position when the sugar lump is dissolved by said liquid.
5. An indicator according to any one of the preceding Claims, characterized by a weight, e.g. a lead weight (24) fixedly mounted on the free end of the suction line (22).
6. An indicator according to any one of the preceding Claims, characterized in that the suction line is a porous tape (22) which sucks liquid (30) present in its vicinity up to the indicator triggering means (18).
7. An indicator according to any one of the preceding Claims, characterized in that the suction line is a strip of blotting paper (22); and in that the spring is a coil spring (16).
8. An indicator according to any one of the preceding Claims, characterized in that the suction line is a strip
(22) of Wettex cloth.
9. An indicator according to any one of Claims 4-9, characterized in that the indicating device (6) is connected to a latch hook (8) which abuts the sugar lump (18) and holds the indicating device in its starting position against the force exerted by the spring (16).
10. An indicator according to any one of the preceding Claims, characterized in that each indicator (2) has an individual serial number which, in conjunction with reloading the indicator, can be associated with a damage report forming the basis of water damage statistics.
PCT/SE1996/000417 1995-03-29 1996-03-29 A leakage indicator WO1996030735A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9501130A SE9501130D0 (en) 1995-03-29 1995-03-29 Device for wet room installations
SE9501130-0 1995-03-29

Publications (1)

Publication Number Publication Date
WO1996030735A1 true WO1996030735A1 (en) 1996-10-03

Family

ID=20397730

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/SE1996/000418 WO1996030599A1 (en) 1995-03-29 1996-03-29 Installation unit for wet rooms
PCT/SE1996/000417 WO1996030735A1 (en) 1995-03-29 1996-03-29 A leakage indicator

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/SE1996/000418 WO1996030599A1 (en) 1995-03-29 1996-03-29 Installation unit for wet rooms

Country Status (3)

Country Link
EP (1) EP0828901A1 (en)
SE (1) SE9501130D0 (en)
WO (2) WO1996030599A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20010513A0 (en) * 2001-03-14 2001-03-14 Seppo Partanen Radiator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE371714B (en) * 1974-02-01 1974-11-25 Husqvarna Ab
DE3718080A1 (en) * 1986-06-20 1987-12-23 Eltek Spa Overrun or overflow prevention device for washing machines
EP0337630A1 (en) * 1988-04-07 1989-10-18 Junkosha Co. Ltd. Oil detection
DE3905661C2 (en) * 1989-02-24 1991-08-14 Heinz 7701 Aach De Schiele
GB2273167A (en) * 1992-12-03 1994-06-08 Snecma Fluid supply system with leak detection device.
FI93782B (en) * 1992-03-13 1995-02-15 Toralf Jansson Damp indicator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE837314C (en) * 1951-01-09 1952-04-21 Joachim Jess Installation wall
DE2308519A1 (en) * 1973-02-21 1974-08-22 Rammbloc Systems Gmbh INSTALLATION BLOCK
PT95538A (en) * 1989-10-12 1991-06-25 Geberit Ag MOUNTING DEVICE IN AN INSTALLATION BLOCK FOR SANITARY EQUIPMENT
SE501842C2 (en) * 1992-09-17 1995-06-06 Lasse Butler Arkitektkontor Ab Tube shaft for mounting next to a wall for a wall-mounted toilet chair

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE371714B (en) * 1974-02-01 1974-11-25 Husqvarna Ab
DE3718080A1 (en) * 1986-06-20 1987-12-23 Eltek Spa Overrun or overflow prevention device for washing machines
EP0337630A1 (en) * 1988-04-07 1989-10-18 Junkosha Co. Ltd. Oil detection
DE3905661C2 (en) * 1989-02-24 1991-08-14 Heinz 7701 Aach De Schiele
FI93782B (en) * 1992-03-13 1995-02-15 Toralf Jansson Damp indicator
GB2273167A (en) * 1992-12-03 1994-06-08 Snecma Fluid supply system with leak detection device.

Also Published As

Publication number Publication date
EP0828901A1 (en) 1998-03-18
WO1996030599A1 (en) 1996-10-03
SE9501130D0 (en) 1995-03-29

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