EP0071593B1 - Speicherheizung in Modulbauweise - Google Patents

Speicherheizung in Modulbauweise Download PDF

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Publication number
EP0071593B1
EP0071593B1 EP82870043A EP82870043A EP0071593B1 EP 0071593 B1 EP0071593 B1 EP 0071593B1 EP 82870043 A EP82870043 A EP 82870043A EP 82870043 A EP82870043 A EP 82870043A EP 0071593 B1 EP0071593 B1 EP 0071593B1
Authority
EP
European Patent Office
Prior art keywords
base
chimney
insulating
storage
heater according
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
EP82870043A
Other languages
English (en)
French (fr)
Other versions
EP0071593A2 (de
EP0071593A3 (en
Inventor
Paul Van Hove
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.)
Umicore NV SA
Original Assignee
Ateliers de Constructions Electriques de Charleroi SA
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 Ateliers de Constructions Electriques de Charleroi SA filed Critical Ateliers de Constructions Electriques de Charleroi SA
Publication of EP0071593A2 publication Critical patent/EP0071593A2/de
Publication of EP0071593A3 publication Critical patent/EP0071593A3/fr
Application granted granted Critical
Publication of EP0071593B1 publication Critical patent/EP0071593B1/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
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
    • F24H7/04—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
    • F24H7/0408—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply
    • F24H7/0433—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply the transfer medium being water

Definitions

  • the invention relates to a storage heater comprising a superstructure and an accumulator core supported by an insulating barrier on a box inside which slides like a drawer a watertight entity comprising the heat exchanger and the motor-fan unit.
  • the air circuit On leaving the fan, the air circuit has a slight overpressure which decreases as the pressure drops encountered in the ventilation channels of the accumulator core. At the inlet of the exchanger, the pressure in the air circuit is close to that of the ambient. However, because of the very large pressure drops created by the heat exchanger, there is a strong vacuum in the space between the heat exchanger and the fan, which can generate parasitic air inflows into the device. .
  • EP-A-0 038 305 (belonging to the state of the art according to Article 54 (3) of the EPC) it has been proposed to facilitate the dismantling of the device in the event of a breakdown by using a removable support serving to delimit the lower part of the air circuit and on which are mounted integrally the heat exchanger and the fan.
  • This entity is mounted laterally by sliding in the interior compartment, but this type of mounting makes the sealing of the entire lower part of the air circuit dependent on the quality of reassembly and risks being compromised by a dislocation of this entity due to the connection of water supply and inlet conduits.
  • Rigorous sealing in the part of the vacuum circuit eliminates any re-entry of fresh air into the device and, since it operates at constant air mass, also prevents any leakage of hot air to the outside from the rest of the air circuit which can then be built more simply to install an insulating barrier against leakage currents.
  • the claimed invention overcomes the aforementioned drawbacks by means of constructive arrangements making it possible to obtain sealing in the part of the air circuit under vacuum and to design the rest of the air circuit to allow effective insulation.
  • the device includes in particular a box acting as a slide in which a module formed by a motor-fan unit, heat exchanger and deflector cone is connected, in the manner of a drawer. the heat exchanger to the fan. Above this box and separated from it by thermal insulation, there is a metal superstructure formed by a front chimney, a rear chimney held by an upper cover. The whole complex is surrounded by thermal insulation which isolates it from the outside.
  • Figures 1a, 1b and 1c show the elements located at the bottom of the storage heater.
  • FIG. 2 represents the constituent elements of the metal superstructure, arranged around the accumulator core.
  • Figure 3 is a section showing the entire apparatus.
  • FIG. 1 shows a base 1, of parallelepipipal shape, made of very thick sheet metal, ribbed to increase its stiffness and surmounted by a series of support pieces 2 intended to take up the load on the core.
  • a thermal insulation 3 placed in a metal tray 4 to protect the insulation 3 against humidity of the laying surface.
  • front of the base 1 is an element called before base 5, of lighter construction, of the same width but of height a little greater than that of the base 1, so as to present a threshold 6 at the top and bottom of the base 1 to serve of the sliding elements inside; this front base 5 extends in a way the base 1 forwards.
  • the pedestal 5 has an opening 7 on its upper face and two slides 8 located on either side of this opening 7.
  • Behind the base 1 is another element called a rear base 9, the upper face of which is open and which is fitted inside two deflectors 10 and 11 to distribute the air streams well at the inlet of the base 1.
  • the pedestal 1, the front pedestal 5 and the rear pedestal 9 constitute a box 12 in which is slid, in the manner of a drawer, a set of elements presented in Figures 1b and 1c.
  • the central element of the box 12, namely the base 1 has at the base a stall relative to the front-base 5 and to the rear-base 9 for positioning the insulation 3 and its protective tank 4.
  • the thickness of the insulation has been chosen so that only the base 1 is supported on the ground. This arrangement guarantees that the entire load can be taken up by the sole base 1, even in the event of a slight subsidence of the ground under the weight of the device.
  • Figure 1b shows a heat exchanger 13 connected by a deflector cone 14 to a volute 15 of ventilation.
  • Two horizontal sheets 16 and 17 serve as guides inside the box 12 for this set of elements constituting a module 18. These guide sheets 16 and 17 are held parallel to one another by two spacers 19 and 20 respectively terminated by flanges fastening 21 and 22.
  • the heat exchanger 13 is held between the two guide sheets 16 and 17 by the interposition of insulating plates 23 and 24 whose role will be explained later.
  • a bottom plate 25 is secured to the module 18 and is provided with a circular hole 26 around which the volute 15 for ventilation is disposed.
  • the deflector cone 14 matches at one end the rectangular outline of the heat exchanger 13 and at the other end it has a circular section bearing on the circular hole 26 of the bottom plate 25 and opening into the interior of the ventilation volute 15 by a flared rim 27.
  • the end of the ventilation volute 15 carries two wings 28 coming to slide in the slides 8 of the casing 12.
  • the heat exchanger 13 is provided with two pipes for connection 29 and 30 to the external heating circuit.
  • the module 18 also includes a motor-fan shown in FIG. 1c.
  • FIG. 1c shows an insulating closure plate 31 provided with a support 32 on which a motor 33 rests, the axis 34 of which drives a fan wheel 35 provided with a hole 36.
  • the insulating closure plate 31 is fixed on the fixing flanges 21 and 22 of the bottom plate 25 so as to present the hole 36 of the fan wheel 35 in the center of the flared circular flange 27 of the deflection cone 14.
  • the bottom plate 25 abuts on the threshold 6 of the base 1 and the wings 28 of the ventilation scroll 15 slide in the slides 8 from the front base 5 for properly positioning the ventilation volute 15 opposite the opening 7 of the front base 5.
  • This opening 7 is surrounded by an extension 37 serving to channel the air flow leaving the volute 15 of ventilation.
  • thermal insulator 38 On the pedestal 5 is arranged a thermal insulator 38.
  • the rear pedestal 9 carries two lateral tabs 39 and a rear tab 40 for supporting an insulating seal 41 shaped so as not to obstruct the air streams moving towards the upper face of the rear pedestal 9.
  • Figure 2 shows all of the metal elements arranged around the storage core, not shown in this figure, and resting on the box 12 with interposition of thermal insulators 38 and 41 respectively for the front base 5 and the rear base 9 and for the base 1 an insulator 42 and 42 ′ distributed in two panels, on either side of an angle 43 serving as a support for the lateral thermal insulation not shown.
  • Two side plates 44 and 45 folded down towards the interior of the device rest on the insulating panel 42 'and are held in place by the weight of the accumulator core.
  • these side plates 44 and 45 receive a front chimney 46 and on the rear-base 9 side, a rear chimney 47.
  • the front chimney 46 has the general shape of a rectangular parallelepiped open on its entire upper face and carrying on its lower face an opening 48 aligning with the opening 7 of the front base 5.
  • the inner face of the chimney before 46 is pierced with holes 49 allowing the air carried by the motor-fan unit to enter the channels of the accumulator core, not shown.
  • the lateral faces of the front chimney 46 carry folds 50 allowing the interlocking of the front chimney 46 in the side sheets 44 and 45.
  • the front chimney 46 is also provided at its upper part with a fold 51 for the interlocking d 'a superior element.
  • These folds 50 slightly elastic by conformation, offer both sufficient sealing by interlocking and free expansion of the assemblies under the effect of temperature variations.
  • the rear chimney 47 is open on its upper and lower faces and is pierced with holes 52 and 53 respectively on its inner and outer faces.
  • the holes 52 on the inner face of the rear chimney 47 allow both the insertion of the heating elements, not shown, and the circulation of air leaving the accumulator core, not shown.
  • the holes 53 on the outer face of the rear chimney 47 allow the heating elements to pass to their source of electrical energy supply.
  • the rear chimney 47 also carries lateral folds 50 and a fold 51 at its upper part, identical to those of the front chimney 46.
  • a rear leg 54 and lateral legs 55 allow the rear chimney 47 to be supported on the rear plinth 9 with interposition of the thermal seal 41.
  • the side plates 44 and 45, the front chimney 46 and the rear chimney 47 are capped by a cover 56, provided, on two opposite faces with connection pleats 57 fitting into the side plates 44 and 45, the two other faces of the cover 56 sliding in the folds 51 of the front and rear chimneys.
  • the assembly formed of side plates 44 and 45, of the front chimney 46, of the rear chimney 47 and of the cover 56 constitutes the metal superstructure 58.
  • This superstructure 58 is obtained by simple interlocking of these constituents.
  • the fixing of the front and rear chimneys can be completed by screws joining the folds 50 of the chimneys to the edges of the side plates 44 and 45, taking care not to hinder the free expansion of the elements; use of buttonholes and shoulder screws. Given the nature of the insulators used for thermal insulation of the device, a good level of insulation can be achieved with these same insulators.
  • FIG. 3 shows an insulating barrier 59 which separates the metal superstructure 58, surrounding a core 60, from the box 12 in which the module 18 is slid.
  • This insulating barrier 59 consists of the insulation 38 placed on the front plinth 5, panels 42 and 42 'superimposed above the support pieces 2 and the insulating seal inserted between the side tabs 39 and the rear tab 40 of the rear plinth 9 and the side tabs 55 and the rear tab 54 rear chimney 47.
  • This insulating barrier 59 prevents any propagation of the leakage currents, generated by the heating elements 61 brought to high temperature, towards the box 12. Given the star supply of the heating elements 61, the superstructure 58 and the core 60 constitute a free neutral point, while the outer casing 62, the casing 12 and the module 18 are earthed.
  • FIG. 3 also shows that when leaving the fan wheel 35 a small amount of air can be introduced into the base 1 between the guide plates 16 and 17 and the deflection cone 14. This leakage flow is stopped by the insulators 23 and 24 arranged on either side of the heat exchanger.
  • FIGS. 4 and 5 show the shaft 34 connecting the wheel 35 to the motor 33 passing through the insulating closure plate 31 in a sheath 63 closed, motor side, by a washer 64 made of self-lubricating material with low friction coefficient.
  • Said washer carries a hole 65 with a diameter adapted to that of the shaft 34 and has an extension towards its upper part provided with a slot 66 to introduce a screw 67.
  • This screw 67 carries a shoulder 68 to allow the washer 64 to remain applied against the wall following a possible displacement of the shaft 34.

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)
  • Resistance Heating (AREA)
  • Inorganic Insulating Materials (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Central Heating Systems (AREA)

Claims (9)

1.. Speicherheizungsapparat aus einem Speicherkern (60), der über eine Wärmeisolierung (42, 42') auf einem Sockel (1) aufliegt, Heizelementen (61), die in den Speicherkern (60) eingesetzt sind, und aus einem Wärmeaustauscher (13), der über einen Umlenkkonus (14) mit einem Ventilations-Spiraldiffusor (15) einer Motor-Ventilator-Einheit (33-36) verbunden ist, die die Luft über einen Verteilerkamin (46), die Kanäle des Speicherkerns (60), und einen Sammlerkamin (47) umwälzt, wobei der Wärmeaustauscher (13), der Umlenkkonus (14), die Motor-Ventilator-Einheit (33-36) und der Ventilations-Spiraldiffusor (15) ein geschlossenes Gebilde (18) bilden, und der Sockel (1) mit Öffnungen zur Verbindung mit dem Verteilerkamin (46) und dem Sammlerkamin (47) versehen ist, dadurch gekennzeichnet, daß das geschlossene Gebilde (18) mit nichtmetallischen Dichtungen (23, 24, 64) versehen ist, die ein Eindringen von Luft in die unter Unterdruck stehenden Zonen verhindern, so daß dieses so abgedichtete, geschlossene Gebilde (18) ohne besondere Vorsichtsmaßnahmen in den Sockel (1) eingesetzt werden kann, und daß der robust gebaute Sockel (1) einen Vordersockel (5) und einen Hintersockel (9) von leichterer Bauweise aufweist, die mit dem Sockel (1) fest verbunden sind, wobei ein Kasten (12) gebildet wird, dessen Unterseite über dem Bereich des Sockels (1) einen Vorsprung aufweist, der eventuell aus einer Isolierung (3) in einem Schutzbehälter (4) besteht, auf der das Gewicht des Apparates ruht.
2. Speicherheizungsapparat gemäß Anspruch 1, dadurch gekennzeichnet, daß eine isolierende Barriere (59) die Unterseite des Speicherkerns (60), die Unterseite des Verteilerkamins (46), und die Unterseite des Sammlerkamins (47) vollständig von dem Sockel (1) isoliert, so daß die Leckströme unterbrochen werden, die die Heizelemente bei hoher Temperatur erzeugen.
3. Speicherheizungsapparat gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der über den Speicherkern (60) verlaufende Luftkreis von seitlichen Blechen (44, 45), einem vorderen Verteilerkamin (46), einem hinteren Sammlerkamin (47), und einem Deckel (56) gebildet wird, die durch Verfalzung (50, 51, 57) miteinander verbunden sind und eine metallische Superstruktur (58) bilden.
4. Speicherheizungsapparat gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Elemente, aus denen die metallische Superstruktur (58) besteht, mit Hilfe von eventuell elastischen Gleitfalzen (50, 51, 57) miteinander verbunden werden, die auf bestimmten Rändern der zu verbindenden Elemente angeordnet sind.
5. Speicherheizungsapparat gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die isolierende Barriere (59) gebildet wird von einer Wärmeisolierung (38), die den Vordersockel (5) von dem vorderen Verteilerkamin (46) trennt, und die so geformt ist, daß sie an einem Aufsatzrahmen (37) anliegt, der die Öffnung des Sockels nach dem Verteilerkamin umgibt und mit dem Vordersockel (5) fest verbunden ist, wobei die Dicke dieser Wärmeisolierung (38) größer als die Höhe dieses Aufsatzrahmens (37) ist ; von einer Wärmeisolierung aus zwei isolierenden Platten (42 und 42'), die durch ein oder mehrere Winkelbleche (43) voneinander getrennt sind, die als Halterung für Wärmeisolierungen dienen, die die seitlichen Flächen (44 und 45) bedecken ; und von einer Wärmeisolierung (41), die so geformt ist, daß sie auf den seitlichen Ansätzen (39) und dem oder den hinteren Ansätzen (40) des Hiritersockels (39) aufliegt, die die Öffnung des Sockels nach dem Sammlerkamin umgeben, und daß sie über seitliche Ansätze (55) und den oder die hinteren Ansätze (56) des hinteren Kamins (47) als Auflage für den hinteren Kamin (47) dient.
6. Speicherheizungsapparat gemäß Anspruch 5, dadurch gekennzeichnet, daß der Umlenkkonus (14) an dem einen Ende so geformt ist, daß er als Halterung für die Rohre des Wärmeaustauschers (13) dient, und an dem, anderen Ende so geformt ist, daß er auf einer Stirnplatte (25) aufliegt, die in unmittelbarer Nähe des Ventilatorrades (35) angeordnet ist.
7. Heizungsapparat gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Umlenkkonus (14) von der Stirnplatte (25) und Abstandsblechen (19 und 20) gehalten wird, und mit Führungsplatten (16, 17) versehen ist.
8. Apparat gemäß Anspruch 7, dadurch gekennzeichnet, daß der Umlenkkonus (14) durch eine oder mehrere Schichten einer Wärmeisolierung (23, 24) von den Führungsplatten (16, 17) isoliert ist.
9. Heizungsapparat gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Welle (34), die das Turbinenrad (35) mit dem Motor (33) verbindet, in einer Hülse (63) durch eine isolierende Wand (31) hindurchgeführt ist, wobei die Hülse (63) am Ende durch eine Unterlegscheibe (64) aus selbstschmierendem Material mit niedrigem Reibungskoeffizienten verschlossen ist, deren Bohrung an den Durchmesser der Welle (34) angepaßt ist, und die einen Spalt (66) für eine Schraube (67) mit einer Schulter (68) von gleicher Höhe wie die Dicke der Unterlegscheibe (64) aufweist.
EP82870043A 1981-07-31 1982-07-29 Speicherheizung in Modulbauweise Expired EP0071593B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP81200862 1981-07-31
EP81200862 1981-07-31

Publications (3)

Publication Number Publication Date
EP0071593A2 EP0071593A2 (de) 1983-02-09
EP0071593A3 EP0071593A3 (en) 1983-10-05
EP0071593B1 true EP0071593B1 (de) 1986-04-16

Family

ID=8188143

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82870043A Expired EP0071593B1 (de) 1981-07-31 1982-07-29 Speicherheizung in Modulbauweise

Country Status (3)

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EP (1) EP0071593B1 (de)
AT (1) ATE19298T1 (de)
DE (1) DE3270617D1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT309607B (de) * 1971-08-18 1973-08-27 Small & Cie D Wärmespeicheranlage
CH632828A5 (fr) * 1979-11-09 1982-10-29 Ind L D Equipement Appareil de chauffage electrique a accumulation.
CH635187A5 (fr) * 1980-04-15 1983-03-15 Battelle Memorial Institute Appareil de chauffage.

Also Published As

Publication number Publication date
EP0071593A2 (de) 1983-02-09
EP0071593A3 (en) 1983-10-05
DE3270617D1 (en) 1986-05-22
ATE19298T1 (de) 1986-05-15

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