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 refers to a combined hot air and hot water apparatus for production of partly hot water and/or radiator water by means of a water heater and partly hot air for heating purposes, whereby the thermal insulation of the water heater is provided at some distance from the heater forming a free space about the same for an air stream con ⁇ tained in a circulation system
• central heaters which may be oil-fired or electric heated or heated by solid fuel. These central heaters in effect give no possibility of using alternative energy sources, and more ⁇ over are expensive to procure and demand supervision, servi ⁇ ce and maintenance.
• the central heaters which are available on the market today either produce solely hot water for direct consumption and radiator hot water or are exclusively intended for heating of ventilating air. Indeed from the patent litterature (SE 123675 and SE 197145) there are previously known combined hot air and hot water generators, but with these it is not possible, to use alternative sources of heat or to produce hot air for different zones within the building and with individual control of the air temperature.
• the object of the invention is to provide a heating assembly of the type stated in the introduction, which is simple in construction and thereby inexpensive in manufacturing and which may be connected to different types of energy sources, e.g. municipal heating networks in winter and solar heating during summer, and which can be used for accumulation of heat by using low cost night tariff and where the external energy source may be arbitrary as long as it produces varm or hot water. Further it should be possible to produce hot air for different parts within the building where the air temperature in every zone is individually controllable.
• Fig. 1 shows a section through the heating apparatus accor- ding to the invention.
• Fig. 2 shows a section along the line II-II in fig. 1.
• Fig. 3 shows a wiew from above of a modified heating appara ⁇ tus according to the invention.
• Fig. 4 shows a heating apparatus according to fig. 3 in a view from below.
• Fig. 5 shows a section along the line V-V in fig. 3, comple ⁇ ted with a diagrammatically illustrated connection diagram.
• Fig. 6 shows a section along the line VI-VI in fig. 4, where the heating apparatus is connected to a heat store.
• Fig. 7 shows in an enlarged scale a section through the cooling flanges of the heating apparatus.
• Fig. 8 shows a view analogous to that of fig. 5 of the heating apparatus with accompanying equipment in a compact design.
• the heating apparatus consists of an outer casing 11, e.g. of sheet metal, which in size and form resembles a conventional wardrobe.
• an outer casing e.g. of sheet metal, which in size and form resembles a conventional wardrobe.
• a water heater 12 in the form of a pressure vessel, which on the outside is provided with radially arranged cooling flanges 13, which extend along the longitudinal direction of the vessel, which flanges form a number of vertical upwards directed cooling flange channels 18.
• a thermal insulation 14 between the inside of the cover and the radially arranged cooling flanges is provided between the inside of the cover and the radially arranged cooling flanges is provided a thermal insulation 14 in such a way, that a space 15 is formed around the heat exchanger.
• the space 15 is defined in the downward direction by means of a horizontal intermediate wall 16, and by means of a partition wall 17 the space 15 is divided such, that two compartments are formed, of which each extend about half the periphery of the heater.
• the cooling flange channels 18 in their upper part end in a horizontal connection channel 19, which includes the upper end wall of the heater and which channel 19 goes over to a number of downwards directed vertical channels 20, which comprise the other half of the periphery of the heater 12.
• the space below the intermediate wall 16 is occupied by a space 21, in which a fan 22 is provided, and which communi- cates with the cooling flange channels 20.
• Each of the both spaces 21 and 23, which are separated by a common partition wall 32, in their turn are connected to an external air circulation system by at least one intake 24 and at least one outlet 25.
• Below the water heater 12 is provided a by pass channel 33, which is divided into two compartments by means of the partition wall 17, which compartments can communicate with each other by a shunt valve 32 in an ope- ning 35 in the partition wall 17.
• the reference 31 is designated an electrical immersion heater.
• the water heater 12 may have different designs depending on which heating system is going to be used.
• the water heater 12 is provided with a coiled heat exchanger 26 with an inlet 27 and an outlet 28, either for a medium which emits heat to the heater, or a medium as e.g. cold water which absorbs heat.
• the water heater 12 as is common, also is provided with an inlet 29 and an outlet 30 which in a similar way as the coil 26 may be connected alternative media.
• the heater can also be double- jacketed, if for example an additional heat medium is to be used alterna- tively.
• the embodiment shown in Figs. 3 - 6 differs from the pre ⁇ vious embodiment by the cooling flange channels being divi ⁇ ded into several sections where every section and pair of sections respectively supplies a specific zone within the building.
• the zone division for example may be for different floors, but it may also comprise one or several rooms at the same floor.
• the heating apparatus is connected to three zones A, B and C, which in turn are connected to the heat sectors a,b and c of the heating apparatus.
• the heat sector a as can be seen in fig 4 and 6 comprises a first distributing box 35 with an inlet tube 36, vertical upwards leading cooling " flange channels 18a, in the upper part of the heating apparatus a connection channel 19a, vertical downwards leading cooling flange channels 20a, a second distributing box 37 with an outlet socket 38 which ends in a tubular channel 39, which in the embodiment shown is connected to a channel system 40 in the bottom beams 41, which is formed as a heat store.
• a fan 22a is connected to the inlet socket 36 of the first distributing box 35, which fan by a tubular channel 42 connects the opposite end of the channel system 40.
• a by-pass channel 33 in which is provided a shunt valve 32.
• the heating section a at an excess of heat has the ability to transfer this to the heat store formed as bottom beams 41.
• the heat store In countries with colder climate the heat store is used as a heated floor, that is as a radiator for the bottom floor.
• the heat sections B and C are identical and can be be used for heating of two different floors. Both these heating sections each consist of a supply channel 43b and 43c re ⁇ spectively, which by a shunt valve 32b, 32c are connected to the supply air outlet 44 belonging to an air-air heat ex- changer 45, which is provided with a drain air outlet 47 and a supply air intake 48.
• the preheated supply air heated by the heat exchanger 45 thus is conveyed via the supply chan ⁇ nels 43b and 43c to distribution boxes 49b and 49c, which distribute the air to the cooling flange channels 18b and 18c, in order threafter to be supplied to the heating zone B and C respectively possibly after mixture of preheated air via the shunt valves 32b and 32c.
• These cooling flange channels are made from two extruded aluminium profiles, which are formed such, that they can be snapped together to a complete hea- ting section, whereby the external form of the internal end walls 50 has been adapted to the external envelope surface of the water heater 12.
• the cooling flange channels 18 are used as downwards directed channels, that is they conduct the supply air from the air-air ex ⁇ changer 45 downwards along the water heater, while the supply channels 43 conducts the heated air up to the heat zones b or c respectively.
• the air-air heat exchanger 45 has been placed directly on the top of the heating apparatus and the space above the water heater 12 has been divided into two compartments, that is one connec- tion channel 19 nearest the roof of the heater and a dis ⁇ tribution chamber 53, which is separated from the connection channel 19 by means of a subroof 54. In this way the air-air heat exchanger can emit its preheated supply air to the both upper distribution boxes 52b and 52c.
• the heating apparatus operates as a heater as well as a source for airborne ventilation heat
• a compact device is accomplished with very simple means to a low price.
• hot water from a district heating system can be considered, which is supplied to the heater by the inlet conduit 29, but it may also be connected to an existing heater for oil, solid fuel or gas.
• the water heater can also be provided with double heating coils of which one of them can be intended for tap hot water and the other can be connected to an alternative heat source, e.g a sun collec ⁇ tor.
• the heater naturally also can be provided with an internal heat source, eg. in the form of an immersion heater 31.
• an accumulator in addition to a concrete slab formed as a heat storage, eg. for sleeper wall foundations also a sand bed can be used, which is placed beneath an unisolated set of wooden bottom beams.

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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)
• Steam Or Hot-Water Central Heating Systems (AREA)
• Central Heating Systems (AREA)

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Cited By (1)

Citations (11)

• 1988
  • 1988-06-10 SE SE8802171A patent/SE8802171L/sv not_active Application Discontinuation
• 1989
  • 1989-12-11 WO PCT/SE1989/000723 patent/WO1991009257A1/en unknown

Patent Citations (11)

Non-Patent Citations (1)

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