EP0324881A1 - Haushaltswassererhitzer - Google Patents

Haushaltswassererhitzer Download PDF

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Publication number
EP0324881A1
EP0324881A1 EP88100858A EP88100858A EP0324881A1 EP 0324881 A1 EP0324881 A1 EP 0324881A1 EP 88100858 A EP88100858 A EP 88100858A EP 88100858 A EP88100858 A EP 88100858A EP 0324881 A1 EP0324881 A1 EP 0324881A1
Authority
EP
European Patent Office
Prior art keywords
outer shell
heater
water heater
hot water
wall
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.)
Granted
Application number
EP88100858A
Other languages
English (en)
French (fr)
Other versions
EP0324881B1 (de
Inventor
Abdul Aziz Abdullah Al-Saleh
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.)
Al-Saleh Abdul Aziz Abdullah
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19883874514 priority Critical patent/DE3874514T2/de
Priority to EP19880100858 priority patent/EP0324881B1/de
Publication of EP0324881A1 publication Critical patent/EP0324881A1/de
Application granted granted Critical
Publication of EP0324881B1 publication Critical patent/EP0324881B1/de
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
    • F24H6/00—Combined water and air heaters

Definitions

  • the present invention relates to a household water heater according to the preamble of claim 1.
  • cooling and heating systems are installed in rooms separate from bathrooms and kitchens. In the latter often a water heater is installed to heat water in winter, and when air heating is required, an additional heating system is installed.
  • the household water heater is a thermally insulated water storage tank enclosed in an outer shell operating by at least one heating element and fed from an electric supply, containing, besides, a thermostat and a safety valve.
  • the heating element consists of an electric resistant wire.
  • the water container is cylindrical in order to resist steam pressure.
  • the bottom and cover of the container are concave.
  • At the bottom of the tank there are three holes, one for an inlet of cold water, the second for an outlet of hot water and the third for fixing the heating assembly as well as or cleaning the heater when it requires maintenance.
  • the other shell of the heater is a steel cylinder welded to a cover and a base.
  • At the base there are two holes for cold and hot water passage.
  • At the center of the base there is a broad opening which has a separate cover screwed on that allows to check the heating unit, a thermostat and an indicating lamp.
  • the indicating lamp can be connected in parallel with the heating unit and shall indicate the switching-on and switching-off of the electric current.
  • a safety valve is installed at the inlet of cold water that - in case of a damage of the thermostat - opens automatically when the steam pressure exceeds the setting value of the valve.
  • a thermometer is installed to indicate the temperature of the water inside the heater.
  • the heater is also provided with a metal support fixed to the exterior structure to allow the mounting of the heater without coming in contact with the wall.
  • the heater is usually used in bathrooms and kitchens for heating water only. It also occupies a large space due to its circular shape and, when it is installed, it will seem as a projection contacting with the wall and is not lined up with the surface of the wall. This will leave useless spaces at the sides and on the top in addition to hot and cold water and electric connections that are outside the heater, which makes the appearance irregular. Therefore, some attempts are made to cover the heater by placing it inside a drawer in the bathroom, in the skylight or on the roof. Sometimes, a central heating system is installed, but it is costy and requires a continuous hot water circulation system.
  • One object of the present invention is to avoid all defects resulting from the normal household water heater and to add other advantages.
  • a further object of the present invention is to provide a household water heater that heats air to a required temperature as well.
  • the solution of the present invention is stated in the characterizing part of claim 1. Improvements and further developments of the invention are disclosed in the subclaims.
  • a household water heater comprises a substantially cylindrical hot water tank enclosed in a spaced insulating outer shell which has a substantially cylindrical front side and at least one flat rear side, the latter to be adjusted substantially in parallel to an adjacent wall or in a corner of two walls, so that extra spaces are left between said inner tank and said outer shell . Furthermore at least one of said extra spaces contains a substantially vertical air passage or channel contacting said hot water tank inside said outer shell; said air passage has a cold air inlet at the bottom and a hot air outlet at the top of the outer shell.
  • the new heater according to the present invention has two main functions; it heats water as well as air to a respective required temperature. It also occupies a small space and does not form a projection but seems to line up with the surface of the wall. All connections of hot and cold water as well as electricity can be hidden inside the heater. Above all, it is conforming to specifications. lhe water tank according to this invention, should be cylindrical and at both ends concave in order to resist to steam pressure.
  • the outer shell of the heater can be constructed according to the following two designs corresponding to the side designated for installation:
  • the outer shell will be a quarter cylinder that encloses a preferably cylindrical hot water tank.
  • the cross section of the heater appears as a quarter circle enclosing a smaller full circle, which is the hot water tank.
  • This type is provided to be installed in a corner between two perpendicular walls. On both sides near the walls a considerably large extra space is left between the smaller circle and the outer shell.
  • the outher shell or exterior structure of the heater is of a cylindrical shape a longitudinal segment of which is cut.
  • This outer shell should enclose a preferably cylindrical hot water tank.
  • the cross section of this heater appears as a circle, from which a segment or section is cut; this remainder of a circle encloses the smaller full circle characterizing the tank.
  • the length of the heater according to the invention can be increased within the limits allowed by specifications and the area of the respective section can been decreased for the following purposes;
  • the heater When the heater is installed as mentioned above, it will appear as part of the site and will not show any exposed projection but it will seem to be lined up with the surface of the wall.
  • a water heater of the invention can be installed on the wall at a metal base fixed on the top of the wall adjacant to the ceiling.
  • Fig. 1 shows a view of a heater 1 of a first design.
  • the external structure of this heater is a quarter cylinder.
  • the heater 1 is installed at a corner 2 between two perpendicular walls 3, 4.
  • the full conformity with the surface of the wall can be seen as well as the top which is in contact with the ceiling (not shown).
  • a hot air outlet appears as 5, thermometer 6, electric switch 7, indication lamp 8, control ON/OFF switch 9 and the external hot and cold water and electric connections are hidden inside the outer shell 10 of the heater 1.
  • Fig. 2 shows a view of a heater 11 of the second design.
  • the exterior structure of this heater is a cylindrical outer shell 12, from which a longitudinal segment or strip 13 is cut.
  • the heater 11 appears installed at the wall surface 14 and its top in contact with the ceiling. Similar to Fig. 1, the hot air outlet appears as 5.
  • the thermometer 6, the electric switch 7, the indication lamp 8, the control ON/OFF switch 9 and the external hot and cold water and electric connections are hidden inside the outer shell 12 of the heater 11.
  • Fig. 3 shows the path 15 of air current in a bathroom, in which a heater 1 (or 11) is installed.
  • the cold air 16 enters into the heating passage 17, 18 at the bottom 19 of the heater 1; inside the heater the air is heated; coming out through the outlet 5 the heated air forms a continuous air current 15.
  • the air current 15 can be stopped by closing the heating passages 17, 18.
  • the passages 17, 18 can be closed automatically by a heating thermostat which is effected by the ambient temperature only. In a similar way the passages 17, 18 can be opened when the room temperature decreases below a required threshold temperature.
  • Fig. 4 shows a section of the heater of Fig. 1 along the line IV - IV.
  • the circle of the water tank 20 and air heating passages 17 und 18 are represented.
  • a section of the thermostat appears as 21 at a point away from the heater tank 20 as far as a possible in order not to be effected by the heat emitted from the tank.
  • the outer shell 12 of the heater according to the present example is round at the rear side or back 22 and not square; this configuration helps to space the heater from the very corner and to decrease the quantity of insulation needed for the heater.
  • a rounded back 22 makes it easier to mount the heater in conformity with the surface of the wall, even if the angle of the corner is not fully square.
  • Fig. 5 shows a section of the heater 11 of Fig. 2 through the line V - V.
  • the circle of the water tank 20 and air heating passages 17 and 18 are represented.
  • This figure also shows a section of the thermostat 21.
  • the projecting edges 23, 24, e.g. of about 2 cm wide on the front side of the heater are supposed again to keep distance between the heater 11 and the surface 14 of the wall as specified.
  • Fig. 6 und 7 show a view of the heaters 1 or 11 as shown in Fig. 1 and 2, particularly the bottom cover appears and air inlets 25 are visible. lt is also noted that the heater 1 (or 11) does not come in an area contact with the adjacent surfaces of the walls 3, 4 or 14, respectively.
  • Fig. 8 is a section along the line VIII - VIII of Fig. 1, and shows the air passage 17, 18 within the heater 1 (or 11) where the temperature of the passing air 26 raises due to being passed along the hot water tank 20; the respective air flow 26 is maintained until the whole ambient room is heated to a required temperature. At that point, the passage is closed, e.g. by top covers 27 and 28, which are controlled by the thermostat 21.
  • This Fig. 8 also shows two bottom covers 29 and 30. They can be manually closed from outside when a heating is not required. When these bottom covers 29 and 30 are closed, the top covers 27, 28 shall also be closed; preferably, they shall be closed automatically. Exterior hot water connections 31 and cold water connections 32 as well as electric connections (not shown) of a heating cartridge or the like are hidden inside the heater structure, say its outer shell, the bottom side of the latter is covered by a bottom cover 34.
  • Cold air 16 enters through the bottom cover 34 of the heater, which covers the exterior connections but allows air intake; the air 26 is passed through the two passages 17, 18 where it contacts the hot water tank 20.
  • the temperature of the circulating air 16 increases due to the contact with the hot surface of the hot water tank and to the thermal radiation which is emitted by the hot water tank 20.
  • the inside of the passages 17, 18 shall be of a dark colour in order to emit as much heat as possible.
  • the air rises when its temperature increases, and exits through the hot air outlet 5, which is situated at the top.
  • the air passages 17, 18 shall be closed by the heat insulating covers 27, 28 at the top of Fig. 8, which are controlled by an inside thermostat 21 fixed at the outer shell 10 or 12 of the heater (see Fig. 4 and 5).
  • a heat insulating cover 29 or 30 at the bottom of the entrance of the air heating passages 17 and 18 of Fig. 8 as well. These covers 29, 30 may be manually closed by a switch 9 from the outside (see Fig. 1, 2) when the air heating function is not desired.
  • the bottom covers 29, 30 are designed to prevent the thermostat from opening the top covers 27, 28 in Fig. 8, which avoids an undesired heat leakage from the heaters 1 or 11.
  • the heater of the present invention may be used as a heating system, in the area where it is installed, especially in regions where people use heating and cooling systems for rooms separate from those of kitchens and bathrooms, which provides cost savings. ln the space at the bottom of the heater, a vertical barrier may be added to separate electrical connections in one side, and hot and cold water connections in the other.
  • said outer shell 10, 12 at its lower end is constructed to form a recess at the bottom of the hot water tank 20, said recess hiding the outside connections 31, 32, 33 of cold and hot water as well as the electric connections and said cold air inlet 25.
  • the idea of making the recess at the bottom of the hot water tank is that the recess will be particularly useful if the outside connections of hot and cold water and electric connections which come out of the wall, are installed in front of the recess during the construction of the building. Otherwise, the recess cannot cover the outside connections.
  • a "T” joint can be installed at cold water opening 35 (Fig. 8) in order to prevent the flow of cold water directly to the hot water opening at the top without being heated and completely mixed with hot water.
  • the front side of the heater preferably shall be extended by e.g. 2 cm at both vertical and longitudinal edges (see Fig. 4 and 5). This extension defines a space between the rearside of the heater and the wall surface, if the longitudinal extension of the heater touches the wall.
  • a metal grill shelf coated with chrome or plastic for decoration plants or other light objects may be fixed at the lower part of the heater.
  • the fixing procedure of the present heater 11 (or 1) on the wall 3, 4 or 14 is easier and more accurate than that of the conventional heaters. It does not require any measurements or adjustments.
  • the heater is set up above a fixing base 36 mounted up to the ceiling 37 as shown in Fig. 9 using a screw 38 at the bottom (see Fig. 9) in order to prevent any movement of the heater when pushed up, unless this screw is unscrewed.
  • a small channel or chrome pipe of e.g. about 60 cm may be installed under the heater in order to serve as a cold air inlet; furthermore if occasion arises the other openings on the bottom cover of the heater shall be omitted, so that the distance between air inlet and outlet points is increased respectively, and accumulation of the hot air at the top and the cold air at the bottom is avoided.
  • the length of such channel may be increased, and it may be installed inside the adjacent wall. A little fan may be fixed inside the heater to suck or push the heated air through the heating channel from the bottom to the top of the heater.
  • the present water heater which encloses a cylindrical hot water tank is used to heat the ambient air by passing it along the hot water tank.
  • the cylindrical hot water tank is enclosed in an outer shell which is lined up with the surface of the respective adjacent wall so that on both sides of the tank extra spaces are left for the installation of vertical channels for passing the air to be heated along the surface of the hot water tank.
  • an essential feature of the present invention is the combination of said lining up the outer shell with the surface of the wall on the one hand and the extra spaces on the other hand which are a rendt of the lining up.
  • said lining up the outer shell with the wall or walls constitutes a double function, that is: it not only improves the aesthetics of the heater but also - as a surprising effect - it furnishes the extra spaces (between the outer shell and the hot water tank) for a proper installation of vertical air heating channels.
  • Figs. 12 and 13 show other alternatives of the outer shell shape of the present heater. It can be similar to Fig. 4 and 5 but with corrugated outer shell 10 or 12 . Also the bottom cover can be with slope towards the wall.

Landscapes

  • 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)
  • Details Of Fluid Heaters (AREA)
EP19880100858 1988-01-21 1988-01-21 Haushaltswassererhitzer Expired EP0324881B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19883874514 DE3874514T2 (de) 1988-01-21 1988-01-21 Haushaltswassererhitzer.
EP19880100858 EP0324881B1 (de) 1988-01-21 1988-01-21 Haushaltswassererhitzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19880100858 EP0324881B1 (de) 1988-01-21 1988-01-21 Haushaltswassererhitzer

Publications (2)

Publication Number Publication Date
EP0324881A1 true EP0324881A1 (de) 1989-07-26
EP0324881B1 EP0324881B1 (de) 1992-09-09

Family

ID=8198665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880100858 Expired EP0324881B1 (de) 1988-01-21 1988-01-21 Haushaltswassererhitzer

Country Status (2)

Country Link
EP (1) EP0324881B1 (de)
DE (1) DE3874514T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991009257A1 (en) * 1988-06-10 1991-06-27 Ingeström Patent Kb A device in heating apparatuses

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH154745A (de) * 1931-04-02 1932-05-31 Rodel & Cie A Boiler.
US2225023A (en) * 1939-05-15 1940-12-17 Oscar G Watt Combination water and room heater
US3793654A (en) * 1971-07-14 1974-02-26 H Roberts Combination bathtub and water and space heating unit
EP0155339A2 (de) * 1984-03-02 1985-09-25 KÖPORC Elektronikai Alkatrész és Müszaki Kerámiagyártó Vállalat Elektrisches Speicherheizgerät

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH154745A (de) * 1931-04-02 1932-05-31 Rodel & Cie A Boiler.
US2225023A (en) * 1939-05-15 1940-12-17 Oscar G Watt Combination water and room heater
US3793654A (en) * 1971-07-14 1974-02-26 H Roberts Combination bathtub and water and space heating unit
EP0155339A2 (de) * 1984-03-02 1985-09-25 KÖPORC Elektronikai Alkatrész és Müszaki Kerámiagyártó Vállalat Elektrisches Speicherheizgerät

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991009257A1 (en) * 1988-06-10 1991-06-27 Ingeström Patent Kb A device in heating apparatuses

Also Published As

Publication number Publication date
EP0324881B1 (de) 1992-09-09
DE3874514T2 (de) 1993-04-08
DE3874514D1 (de) 1992-10-15

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