EP0126801B1 - Chauffe-eau - Google Patents

Chauffe-eau Download PDF

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Publication number
EP0126801B1
EP0126801B1 EP83108783A EP83108783A EP0126801B1 EP 0126801 B1 EP0126801 B1 EP 0126801B1 EP 83108783 A EP83108783 A EP 83108783A EP 83108783 A EP83108783 A EP 83108783A EP 0126801 B1 EP0126801 B1 EP 0126801B1
Authority
EP
European Patent Office
Prior art keywords
tubular member
row
orifice
circular tubular
water heater
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
Application number
EP83108783A
Other languages
German (de)
English (en)
Other versions
EP0126801A2 (fr
EP0126801A3 (en
Inventor
Otto Z. Vado
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.)
State Industries LLC
Original Assignee
State Industries LLC
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 State Industries LLC filed Critical State Industries LLC
Publication of EP0126801A2 publication Critical patent/EP0126801A2/fr
Publication of EP0126801A3 publication Critical patent/EP0126801A3/en
Application granted granted Critical
Publication of EP0126801B1 publication Critical patent/EP0126801B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
    • F24H1/205—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes with furnace tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/12—Arrangements for connecting heaters to circulation pipes
    • F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
    • F24H9/133—Storage heaters

Definitions

  • the invention relates to a water heater according to the preamble part of claim 1.
  • a longstanding problem in the water heater industry is the tendency of dissolved solid particles to precipitate out of the water being heated, which particles will accumulate on the bottom of the tank, causing adverse operation and tank failure.
  • Prior constructions directed to this problem are disclosed in US-A-4,157,077, US-A-4,257,355 and US-A-4.,263,879, the last one disclosing a water heater according to the preamble part of claim 1.
  • the latter water heater includes an agitator assembly having a circular tubular member which is positioned between the outer row of flue tubes and the tank wall with all orifices extending only in a horizontal plane, in other words, parallel to the bottom.
  • venturi fitting being directed upwardly in the center of the tank, and being disposed on a straight portion which extends from a connection point to the inner side of the ring portion. Due this latter feature, the known water heater is relatively complicated structurally and, although a certain swirling and sweeping action is possible, the effect of this known arrangement is not satisfactory. Thus, the generic water heater also suffers from the before-mentioned drawback that there is a tendency for dissolved solid par- tides to precipitate out of the water being heated. If the scale accumulations are not periodically removed bysometypeoftankcieaning procedure, theywill gradually build up and harden, causing an adverse effect on the heating efficiency of the unit and, in many cases, will ultimately cause a premature failure of the heater tank.
  • the water heater of the present invention is comprised of a tank wall 10, a tank top member 12 and a tank bottom member 14.
  • Top and bottom members 12 and 14 are provided with a plurality of aligned openings 16 and 18, respectively, in which flue tubes 20 are mounted (Fig. 1 does not show a complete set of flue tubes 20).
  • Tank top and bottom members 12 and 14 are sealed to the tank wall 10 and to the flue tubes 20 by any suitable means such as welding to form a liquid tight tank having a water heating chamber 22 therein.
  • a hot water outlet fitting 23 is provided in the top portion of the tank wall 10.
  • the flue tube pattern shown in Fig. 2 is typical.
  • the flue tubes 20 are positioned in an outer row designated by numeral 24 and an inner row designated by reference number 26.
  • the water heater tank is mounted on a support base 28 which houses a burner 30 of conventional construction. Burner 30 is shown schematically in Fig. 1.
  • Agitator assembly 32 is mounted in the lower portion of tank chamber 22 in the lower portion of tank chamber 22.
  • Agitator assembly 32 is comprised of a circular tubular member 34 and a straight inlet tubular member 36 connected to the circular member 34 at point 38 by any suitable means such as welding.
  • members 34 and 36 are made of heat and corrosion resistant material such as stainless steel.
  • Inlet tube 36 extends through the tank wall 10 and fits inside a sleeve 40 which, in turn, is sealed inside a nipple 42.
  • Sleeve 40 is made of an electrically nonconductive material such as plastic.
  • Nipple 42 is threaded into a spud 44 which is welded to the tank wall 10.
  • Nipple 42 is connected to a source of water under pressure by any suitable means (not shown).
  • circular tubular member 34 of the agitator assembly 32 is located between the outer row 24 and the inner row 26 of flue tubes 20. More specifically, member 34 is located internally of and closely adjacent the outer row 24 of flue tubes 20. The significance of this location will be explained in detail hereinafter.
  • Circular tubular member 34 is provided with three (3) rows of orifice assemblies 46; i.e., one row on the inner side of the member, a second row on the outer side of the member and a third row on the top of the member.
  • Orifice assemblies 46 are of identical construction and are mounted on member 34 in an identical manner. In the preferred embodiment, orifice assemblies 46 are mounted on member 34 by the following procedure. Referring to Fig. 3, the first step is to form an indentation in the wall of member 34 to provide a substantially flat angled wall portion 48. This can be accomplished by any suitable means such as an hydraulic press. The next step is to punch or drill an opening 50 in wall 48.
  • orifice assembly 46 is comprised of two parts, namely, a mounting clip 52 and an orifice member 54.
  • Clips 52 preferably made of spring steel
  • Orifice members 54 are of cylindrical shape and have a flow passageway 56 therethrough.
  • orifice members 54 are made of an inorganic material such as ceramic and have an external groove 58 in one end thereof adapted for snap engagement with shoulders 60 formed in the end of mounting clips 52. It will be appreciated from the foregoing description that to install an orifice assembly 46 in tubular member 34, a mounting clip 52 is first snapped into opening 50 and then an orifice member 54 is snapped into clip 52 to complete the installation.
  • the row of orifice assemblies 46 on the top of member 32 are positioned so that the axis of each assembly is directed upwardly and at an angle with respect to the verticle. As indicated in Fig. 3 in the preferred embodiment, such angle is approximately 35°.
  • the orifice assemblies 46 on the inner and outer sides of tubular member 34 extend substantially tangential with respect to the circular axis of tube 34, i.e. at an angle with respect to a radius line extending through orifice openings 50.
  • Orifice assemblies also extend downwardly with respect to a horizontal plane extending through the axis of member 34. As noted in Figs. 4 and 5 in the preferred embodiment, such downward angle from the horizontal is approximately 30°. In the preferred embodiment, such tangential angle is approximately 35° with respect to a radius line through each orifice opening 50.
  • orifice assemblies 46 in the inner, outer and top rows all extend in the same direction with respect to the axis of tubular member 34, i.e., either in a clockwise or counterclockwise direction with respect to the axis of tubular member 32.
  • agitator assembly 32 is mounted in the lower portion of the water heater chamber 22 in a spaced relationship with respect to the bottom 14 of the water heater tank. As shown in Fig. 7, the agitator assembly is supported in such spaced relationship with the tank bottom 14 by means of a plurality of leg members 62.
  • leg members 62 are of plastic material and have a groove 64 and a slot 65 therein dimensioned for snap engagement with openings 66 in the bottom of tubular member 32.
  • the inlet tube 36 and its mounting engagement in tank wall 10 also serves to provide support for the agitator assembly 32 in its desired position in the bottom of the water heater tank.
  • the bottom of agitator assembly 32 is spaced as close to the tank bottom 14 as is practicable. In the embodiment shown and described herein, the distance is approximately 1-5/8 inches (41 mm).
  • the water in chamber 22 will be heated by the hot gases and products of combustion passing through flue tubes 20 from burner 30 or in the case of an electric heater, the water will be heated by an electric heating element.
  • the cold water drawn into the tank each time hot water is drawn off the top will be expelled into chamber 22 through orifice members 54 in the form of a plurality of jet-like streams.
  • the streams emanating from the outer row of orifices in member 34 will be directed somewhat downwardly at a tangential angle with respect of the flue tubes 20 in the outer row.
  • the streams emanating from the inner row of orifices on member 34 will be directed somewhat downwardly and at a tangential angle with respect to the flue tubes 20 in the inner row 26.
  • the streams emanating from the upper row of orifices on member 34 will be directed upwardly at an angle with respect to the axis of tubular member 34.
  • jet-like streams emanating from the outer row of orifices will effectively sweep the tank bottom around the base of flue tubes 20 in row 24.
  • the jet-like streams emanating from the inner row of orifices will effectively sweep the tank bottom around the base of flue tubes 20 in inner row 26.
  • the jet-like streams emanating from the top row of orifices will enhance the swirling action produced by the jet-like streams emanating from the inner and outer rows of orifices and will further provide an upwardly directed flow component to the overall swirling action.
  • the agitator assembly means 32 is dimensioned so that the aggregate size of flow passageways 56 in orifice members 54 is less than the size of the flow passageway through inlet tube 36. With such relationship, the velocity of the water flowing through the orifices 56 will be greater than the velocity of water flowing through inlet tube 36 from the source of cold water under pressure.
  • inlet tube 36 is made from 1-1/8 inch (28,6 mm) O.D. stainless steel tubing and passageways 56 in orifice members 54 have a diameter .2 inches (5,08 mm). With such dimensions, the ratio of the total area of the flow passageways 56 in the orifices 56 (total of 21 orifices) will be approximately 84% of the flow area through inlet tube 36.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Claims (9)

1. Chauffe-eau comprenant:
un moyen de réservoir étanche à l'eau (10, 12, 14,16,18) apte à contenir de l'eau sous pression;
une source de chaleur comprenant une pluralité de tubes formant carneaux (20) montés dans ledit moyen de réservoir étanche à l'eau (10,12,14,16, 18) lesdits tubes formant carneaux (20) étant disposés en une rangée extérieure (24) et en une rangée intérieure (26);
un moyen de sortie d'eau chaude (23) situé dans la partie supérieure dudit moyen de réservoir (10, 12, 14, 16, 18);
un moyen d'ensemble d'agitation (32) monté dans la partie formant le fond dudit moyen de réservoir (10,12,14,16,18) ledit moyen d'ensemble d'agitation (32) comprenant un organe tubulaire circulaire (34) relié à une source d'eau sous pression;
ledit organe tubulaire circulaire (34) comportant une première et une seconde rangées d'ensembles d'orifices (46), la première rangée étant montée autour du côté intérieur dudit organe tubulaire circulaire (34) et étant orientée en direction de ladite rangée intérieure (26) de tubes (20) formant carneaux, et la seconde rangée étant orientée en direction de la rangée extérieure (24) de tubes formant carneaux (20),
chacun desdits ensembles d'orifices (46) comprenant un passage d'écoulement (56) dans lequel un courant d'eau semblable à un jet est dirigé vers l'intérieur dudit moyen de réservoir (10, 12, 14, 16, 18), chaque fois que de l'eau est tirée à la partie supérieure dudit moyen de réservoir (10, 12, 14, 16, 18) dans lesdits moyens de sortie d'eau chaude (23),
étant caractérisé en ce que
ledit organe tubulaire circulaire (34) est placé entre ladite rangée extérieure et ladite rangée intérieure (24, 26) de tubes formant carneaux (20),
que ladite seconde rangée d'ensemble d'orifices (46) est montée autour du côté extérieur dudit organe tubulaire circulaire (34) et s'étend sensiblement de façon tangentielle par rapport à l'axe horizontal dudit organe tubulaire circulaire (34),
qu'une troisième rangée d'ensemble d'orifices (46) est montée au sommet dudit organe tubulaire circulaire (34) et est positionnée de façon telle que l'axe de chacun de ses ensembles d'orifices (46) est orienté vers le haut en formant un angle par rapport à la verticale,
et que ladite première rangée d'ensemble d'orifices (46) s'étend vers le bas par rapport à un plan horizontal comprenant l'axe dudit organe tubulaire circulaire (34).
2. Chauffe-eau selon la revendication 1, caractérisé en ce que lesdits ensembles d'orifices (46) des première et seconde rangées sont orientés avec un angle par rapport à une ligne de rayon traversant chacun des ensembles (46) d'orifices, lesdits ensembles (46) d'orifices des première, seconde et troisième rangées étant tous orientés dans la même direction par rapport à l'axe dudit organe tubulaire (34) afin de créer un effet de tourbillon dans la partie formant le fond dudit moyen de réservoir (10,12,14,16,18) chaque fois que de l'eau est tirée par ledit moyen de sortie d'eau chaude (23).
3. Chauffe-eau selon la revendication 1 ou 2, caractérisé en ce que chacun desdits ensembles d'orifices (46) comprend un organe d'orifice (54) comportant ledit passage d'écoulement (56) qui s'étend dans son corps cylindrique.
4. Chauffe-eau selon l'une des revendications 1 à 3, caractérisé en ce que chacun des ensembles (46) d'orifices comprend en outre un organe de pince à ressort (52) apte à s'enclencher dans une ouverture dudit organe tubulaire circulaire (34), apte en outre à recevoir et à y maintenir un desdits organes d'orifices (54).
5. Chauffe-eau selon la revendication 4, caractérisé en ce que ledit organe d'orifice (54) est fabriqué en matériau non-organique.
6. Chauffe-eau selon la revendications 1 à 5, caractérisé en ce que ledit organe tubulaire circulaire (34) dudit ensemble d'agitation (32) est placé dans ledit moyen de réservoir (10, 12, 14, 16, 18) avec un écart par rapport au fond (14) dudit moyen de réservoir (10,12,14,16,18) et que ledit espacement entre ledit organe tubulaire circulaire (34) et ledit fond de réservoir (14) est approximativement de 1 inch à 5/8 d'inch (25,4 mm à 60 mm).
7. Chauffe-eau selon une des revendications 1 à 6, caractérisé en ce que l'ensemble d'orifices (56) des première et seconde rangées sont orientées vers le bas à partir de l'horizontale avec un angle d'approximativement 30°.
8. Chauffe-eau selon l'une des revendications 1 à 7 caractérisé en ce que ladite direction dans laquelle s'étendent tous les ensembles d'orifices (46) est la même par rapport à l'axe dudit organe tubulaire circulaire (34).
9. Chauffe-eau selon l'une des revendications 1 à 8 caractérisé en ce que lesdits ensembles d'orifices (46) des première, seconde et troisième rangées sont toutes orientées dans le sens inverse de celui des aiguilles d'une montre par rapport à l'axe dudit organe tubulaire circulaire (34) lorsqu'on observe à partir de la partie supérieure dudit moyen de réservoir (10, 12, 14, 16, 18).
EP83108783A 1983-05-25 1983-09-06 Chauffe-eau Expired EP0126801B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US49801983A 1983-05-25 1983-05-25
US498019 1983-05-25

Publications (3)

Publication Number Publication Date
EP0126801A2 EP0126801A2 (fr) 1984-12-05
EP0126801A3 EP0126801A3 (en) 1985-06-19
EP0126801B1 true EP0126801B1 (fr) 1989-01-11

Family

ID=23979291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83108783A Expired EP0126801B1 (fr) 1983-05-25 1983-09-06 Chauffe-eau

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EP (1) EP0126801B1 (fr)
CA (1) CA1215276A (fr)
DE (1) DE3378927D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4791888A (en) * 1987-09-11 1988-12-20 State Industries, Inc. Water heater tank construction
US4972804A (en) * 1989-04-25 1990-11-27 Alexander T. Kindling Method and apparatus for organizing the flow of fluid in a vertical steam generator
US5165472A (en) * 1991-03-18 1992-11-24 Louis Cloutier Heat exchanger with fluid injectors
DE19638851C1 (de) * 1996-09-21 1998-02-26 Oschatz Gmbh Dampferzeuger
CA2239007C (fr) * 1997-05-29 2008-01-22 Eric M. Lannes Raccord d'admission pour chauffe-eau

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157077A (en) * 1977-11-25 1979-06-05 Lindahl John R Water heater
US4263879A (en) * 1977-11-25 1981-04-28 State Industries, Inc. Water heater
US4257355A (en) * 1979-08-17 1981-03-24 A. O. Smith Corporation Cold water inlet tube

Also Published As

Publication number Publication date
EP0126801A2 (fr) 1984-12-05
EP0126801A3 (en) 1985-06-19
CA1215276A (fr) 1986-12-16
DE3378927D1 (en) 1989-02-16

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