EP0389021A2 - Hot air induction and diffusion unit for heating a space, for example a room - Google Patents

Hot air induction and diffusion unit for heating a space, for example a room Download PDF

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Publication number
EP0389021A2
EP0389021A2 EP90200536A EP90200536A EP0389021A2 EP 0389021 A2 EP0389021 A2 EP 0389021A2 EP 90200536 A EP90200536 A EP 90200536A EP 90200536 A EP90200536 A EP 90200536A EP 0389021 A2 EP0389021 A2 EP 0389021A2
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EP
European Patent Office
Prior art keywords
air
chamber
space
induction
hot
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Withdrawn
Application number
EP90200536A
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German (de)
French (fr)
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EP0389021A3 (en
Inventor
Jozef De Lepeleire
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LEPELEIRE JOZEF DE
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LEPELEIRE JOZEF DE
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Publication date
Application filed by LEPELEIRE JOZEF DE filed Critical LEPELEIRE JOZEF DE
Publication of EP0389021A2 publication Critical patent/EP0389021A2/en
Publication of EP0389021A3 publication Critical patent/EP0389021A3/en
Withdrawn legal-status Critical Current

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    • 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
    • F24D5/00—Hot-air central heating systems; Exhaust gas central heating systems
    • F24D5/02—Hot-air central heating systems; Exhaust gas central heating systems operating with discharge of hot air into the space or area to be heated

Definitions

  • the present invention relates to a hot air induction and diffusion unit intended to heat a space such as a bedroom, for example.
  • Any hot air heating system inevitably includes vents, or supply grilles, through which hot air is introduced into the room to be heated.
  • vents which are distinguished either by their shape, or by the different possible types of adjustable or fixed deflectors, or by the envisaged application on the ground, wall or ceiling.
  • induction devices commonly called ejector convectors are used.
  • These ejector-convectors are essentially equipped with a heat exchanger or coil and / or cooling and use the induction effect of small jets of primary pulsed air to suck the ambient air through the above-mentioned exchanger to cool induced air.
  • These ejector-convectors are also often fitted with a heating coil to compensate for heat losses in the winter season.
  • any recycling of air in a room or a set of rooms promotes the dissemination of odors, dust, smoke or possibly bacteria in all rooms served by the central heating system with hot air.
  • the object of the invention is to remedy the drawbacks described above and to produce a new and original installation operating under remarkable economic conditions.
  • the unit according to the invention comprises, for each space to be heated, at least one hot air supply pipe delivering a primary air current to a forced air chamber causing a secondary air flow at room temperature, the flow of hot primary air being brought to a temperature higher than that of ambient air, i.e. the temperature of the space considered.
  • the above-mentioned forced air chamber has a longitudinal slot constituting an injection device and oriented so as to entrain the secondary air current through an induction chamber.
  • the invention is characterized in that the above-mentioned forced air chamber comprises a series of nozzles directed so as to entrain the secondary air current through an induction chamber.
  • the secondary air flow is entrained between a profile forming a rail-rail for a curtain and the forced air chamber disposed above said profile.
  • the induction and diffusion unit is therefore illustrated in a first embodiment in FIG. 1.
  • the two figures show particular embodiments for the integrated mounting above a window, at the same time forming a curtain rail cover, the connection to the primary air supply duct being made either above, either laterally.
  • the unit according to FIG. 1 essentially comprises a forced air chamber 1, to be connected to a hot air supply duct 2, called primary air, a longitudinal slot forming a device 3 for injecting this primary air into a induction chamber 4, a suction opening 5 of induced ambient air, called secondary air, and a mouth 6 or supply and diffusion device in the room 7 to be heated, of the mixture of primary and secondary air.
  • the unit according to Figure 2 operates on the same principle. It consists of a forced air chamber 1 connected to a hot air delivery duct 2.
  • the injection device 3 specific to the first embodiment and constituted by a longitudinal slot is formed here by a series of nozzles 11 causing by venturi effect the aspiration of ambient air which enters the induction chamber 4 through the suction opening 5.
  • the mixture of hot air leaving the nozzles 11 with the ambient air entering through the suction opening 5 is done perfectly.
  • the air mixture leaves the induction chamber 4 through the mouth 6.
  • the induction chamber 4 is limited to the upper part by the base of the forced air chamber 1 and to the lower part by the profile 9 also forming a rail cover.
  • the unit according to the invention in a particular embodiment, allows an integrated mounting above a window 8 and makes use of a rail cover 9 of the curtain 10. This is illustrated by the figures.
  • the temperature to which the hot air is brought into the forced air chamber 1 and which reaches the mouth 6 is significantly higher than the temperature of the ambient air.
  • the entrainment by this hot air of the secondary air at a temperature of about 20 ° C will allow to obtain at the outlet of the mouth 6 an air flow having a temperature of about 36 ° C.
  • the primary air flow at a higher temperature may be equal to or less than the secondary air flow. This is a question of choice without influencing the principle of the invention.
  • the unit according to the invention is also distinguished from any other design currently applied and this by its specific concept adapting to inhabited premises.
  • the device indeed allows, in a particularly advantageous embodiment, an invisible installation and integrated in the rail cover of a curtain above a window, while favoring an air flow directed upwards and inspired by induction, by opposing, moreover, the current of cold air descending along the glass surfaces, which phenomenon occurs regularly at the expense of thermal comfort.

Abstract

The unit is characterised in that it comprises, for each space to be heated, at least one hot-air pulsion duct (2) which delivers towards a pulsed-air chamber (1) a current of hot primary air drawing with it a current of secondary air at ambient temperature, the delivery of hot primary air being heated to a temperature which is greater than that of the ambient air, that is to say the temperature of the space in question. <IMAGE>

Description

La présente invention concerne une unité d'induction et de diffusion d'air chaud destiné à chauffer un espace tel qu'une chambre, par exemple.The present invention relates to a hot air induction and diffusion unit intended to heat a space such as a bedroom, for example.

Tout système de chauffage à air chaud comporte inévitablement des bouches, ou grilles de pulsion par lesquelles l'air chaud est introduit dans la pièce à chauffer.Any hot air heating system inevitably includes vents, or supply grilles, through which hot air is introduced into the room to be heated.

Plusieurs types de bouches sont utilisés qui se dis­tinguent soit par leur forme, soit par les différents types possibles de déflecteurs réglables ou fixes, soit par l'application envisagée au sol, murale ou sous forme de plafonnier.Several types of vents are used which are distinguished either by their shape, or by the different possible types of adjustable or fixed deflectors, or by the envisaged application on the ground, wall or ceiling.

Toutes ces bouches ont en commun de régulariser et/ou de diriger, de façon plus ou moins efficace, un débit d'air à la sortie d'une canalisation.All these mouths have in common to regulate and / or direct, more or less effectively, an air flow at the outlet of a pipe.

D'autre part, on utilise dans certaines installations de conditionnement d'air des appareils à induction communément appelés des éjecto-convecteurs.On the other hand, in certain air conditioning installations, induction devices commonly called ejector convectors are used.

Ces éjecto-convecteurs sont essentiellement équipés d'un échangeur ou batterie de chauffage et/ou de refroidissement et utilisent l'effet d'induction de petits jets d'air primaire pulsé pour aspirer l'air ambiant à travers l'échangeur susdit pour refroidir l'air induit. Ces éjecto-convecteurs sont également souvent équipés d'une batterie de chauffe permettant de compenser les déperditions thermi­ques en saison d'hiver.These ejector-convectors are essentially equipped with a heat exchanger or coil and / or cooling and use the induction effect of small jets of primary pulsed air to suck the ambient air through the above-mentioned exchanger to cool induced air. These ejector-convectors are also often fitted with a heating coil to compensate for heat losses in the winter season.

Les problèmes causés, propres à tout système de chauffage central à air chaud d'une habitation résultent principa­lement du fait que l'air, par sa faible chaleur spécifique, se présente comme un médium caloporteur assez médiocre.The problems caused, which are specific to any central hot air heating system in a home, result mainly from the fact that air, by its low specific heat, presents itself as a rather mediocre heat transfer medium.

Comme les exigences de confort thermique imposant des limites à la température de l'air pulsé dans la pièce à chauffer, il faut donc mettre en oeuvre des débits d'air relativement importants et nettement supérieurs aux besoins de la ventilation.As the requirements of thermal comfort imposing limits on the temperature of the air forced into the room to be heated, it is therefore necessary to implement relatively large air flow rates which are clearly greater than the ventilation requirements.

Les installations de chauffage à air chaud actuelles exigent donc des canalisations d'air assez encombrantes, dimensionnées pour faire circuler des quantités d'air composées d'air frais extérieur et d'air recyclé.Current hot air heating systems therefore require fairly bulky air ducts, sized to circulate quantities of air composed of fresh outside air and recycled air.

De plus, tout recyclage d'air dans une pièce ou un ensemble de pièces favorise la dissémination des odeurs, poussières, fumées ou éventuellement bactéries dans tous les locaux déservis par l'installation de chauffage central à air chaud.In addition, any recycling of air in a room or a set of rooms promotes the dissemination of odors, dust, smoke or possibly bacteria in all rooms served by the central heating system with hot air.

Il faut donc limiter le plus possible, ou même éliminer, les quantités d'air recyclé par le système central de chauffage par air chaud.It is therefore necessary to limit as much as possible, or even eliminate, the quantities of air recycled by the central hot air heating system.

Même en mettant en oeuvre des systèmes de récupé­ration de chaleur, le fonctionnement faisant uniquement appel à de l'air neuf quoiqu'éliminant le recyclage de l'air, signifie inévitablement une forte augmentation des besoins, et donc un gaspillage d'énergie thermique, tant que l'on ne parvient pas à limiter le débit d'air de l'installation aux besoins de la ventilation.Even when using heat recovery systems, operation using only fresh air, although eliminating air recycling, inevitably means a large increase in needs, and therefore a waste of thermal energy, as long as it is not possible to limit the air flow of the installation to the needs of ventilation.

L'installation de filtres spéciaux d'air, permettant d'éliminer les odeurs et les bactéries, mène inévitablement à un coût d'investissement et d'entretien excessif.The installation of special air filters, eliminating odors and bacteria, inevitably leads to excessive investment and maintenance costs.

L'invention a pour objet de remédier aux inconvénients décrits ci-dessus et de réaliser une installation nouvelle et originale fonctionnant dans des conditions d'économie remarquables.The object of the invention is to remedy the drawbacks described above and to produce a new and original installation operating under remarkable economic conditions.

Pour réaliser cet objectif conformément à l'invention, l'unité selon l'invention comporte pour chaque espace à chauffer, au moins une conduite de pulsion d'air chaud débitant vers une chambre d'air pulsé un courant d'air primaire entraînant un courant d'air secondaire à température ambiante, le débit d'air primaire chaud étant porté à une température supérieure à celle de l'air ambiant, c.à.d. la température de l'espace considéré.To achieve this objective in accordance with the invention, the unit according to the invention comprises, for each space to be heated, at least one hot air supply pipe delivering a primary air current to a forced air chamber causing a secondary air flow at room temperature, the flow of hot primary air being brought to a temperature higher than that of ambient air, i.e. the temperature of the space considered.

Dans une première forme de réalisation, la chambre d'air pulsé précitée comporte une fente longitudinale constituant un dispositif d'injection et orientée de manière à entraîner le courant d'air secondaire au travers d'une chambre d'induction.In a first embodiment, the above-mentioned forced air chamber has a longitudinal slot constituting an injection device and oriented so as to entrain the secondary air current through an induction chamber.

Dans une autre forme de réalisation, l'invention est caractérisée en ce que la chambre d'air pulsé précitée comporte une série d'ajutages dirigés de manière à entraîner le courant d'air secondaire au travers d'une chambre d'induction.In another embodiment, the invention is characterized in that the above-mentioned forced air chamber comprises a series of nozzles directed so as to entrain the secondary air current through an induction chamber.

Toujours selon ces formes de réalisation remar­quables, le courant d'air secondaire est entraîné entre un profilé formant chache-rail pour un rideau et la chambre d'air pulsé disposée au-dessus dudit profilé.Still according to these remarkable embodiments, the secondary air flow is entrained between a profile forming a rail-rail for a curtain and the forced air chamber disposed above said profile.

D'autres détails et avantages de l'invention ressor­tiront de la description qui sera donnée ci-après d'une installation d'induction et de diffusion d'air chaud, selon l'invention. Cette des­cription n'est donnée qu'à titre d'exemple et ne limite pas l'invention. Les notations de référence se rapportent à la figure ci-jointe.

  • La figure 1 représente une coupe transversale au travers d'un conduit longitudinal combiné avec cache-rail n'est évi­demment qu'une forme de réalisation préférentielle de l'invention.
  • La figure 2 représente, également en coupe trans­versale une autre forme d'exécution.
Other details and advantages of the invention will emerge from the description which will be given below of an installation for the induction and diffusion of hot air, according to the invention. This description is given by way of example only and does not limit the invention. The reference ratings refer to the attached figure.
  • Figure 1 shows a cross section through a longitudinal duct combined with rail cover is obviously only a preferred embodiment of the invention.
  • Figure 2 shows, also in cross section another embodiment.

L'unité d'induction et de diffusion est donc illustrée dans une première forme de réalisation par la figure 1.The induction and diffusion unit is therefore illustrated in a first embodiment in FIG. 1.

Les deux figures montrent des formes d'exécution particulière pour le montage intégré au-dessus d'une fenêtre, formant en même temps un cache-rail de rideau, le raccordement au conduit de pulsion d'air primaire se faisant soit au-dessus, soit latéralement.The two figures show particular embodiments for the integrated mounting above a window, at the same time forming a curtain rail cover, the connection to the primary air supply duct being made either above, either laterally.

L'unité selon la figure 1 comporte essentiellement une chambre d'air pulsé 1, à raccorder à un conduit de pulsion 2 d'air chaud, dit air primaire, une fente longitudinale formant un dispo­sitif d'injection 3 de cet air primaire dans une chambre d'induction 4, une ouverture d'aspiration 5 d'air ambiant induit, dit air secondaire, et une bouche 6 ou dispositif de pulsion et de diffusion dans le local 7 à chauffer, du mélange d'air primaire et secondaire.The unit according to FIG. 1 essentially comprises a forced air chamber 1, to be connected to a hot air supply duct 2, called primary air, a longitudinal slot forming a device 3 for injecting this primary air into a induction chamber 4, a suction opening 5 of induced ambient air, called secondary air, and a mouth 6 or supply and diffusion device in the room 7 to be heated, of the mixture of primary and secondary air.

L'unité selon la figure 2 fonctionne selon le même principe. Elle est constituée par une chambre d'air pulsé 1 raccordée à un conduit de pulsion d'air chaud 2. Le dispositif d'injection 3 propre à la première forme d'exécution et constitué par une fente longitudinale est formé ici par une série d'ajutages 11 provoquant par effet venturi l'aspiration de l'air ambiant qui pénètre dans la chambre d'induction 4 par l'ouverture d'aspiration 5. Le mélange de l'air chaud sortant des ajutages 11 avec l'air ambiant pénétrant par l'ouverture d'aspi­ration 5 se fait de façon parfaite. Le mélange d'air quitte la chambre d'induction 4 par la bouche 6.The unit according to Figure 2 operates on the same principle. It consists of a forced air chamber 1 connected to a hot air delivery duct 2. The injection device 3 specific to the first embodiment and constituted by a longitudinal slot is formed here by a series of nozzles 11 causing by venturi effect the aspiration of ambient air which enters the induction chamber 4 through the suction opening 5. The mixture of hot air leaving the nozzles 11 with the ambient air entering through the suction opening 5 is done perfectly. The air mixture leaves the induction chamber 4 through the mouth 6.

Ici également la chambre d'induction 4 est limitée à la partie supérieure par la base de la chambre d'air pulsé 1 et à la partie inférieure par le profilé 9 formant également cache-rail.Here also the induction chamber 4 is limited to the upper part by the base of the forced air chamber 1 and to the lower part by the profile 9 also forming a rail cover.

L'unité selon l'invention, dans une exécution par­ticulière, permet un montage intégré au-dessus d'une fenêtre 8 et fait usage d'un cache-rail 9 du rideau 10. Ceci est illustré par les figures.The unit according to the invention, in a particular embodiment, allows an integrated mounting above a window 8 and makes use of a rail cover 9 of the curtain 10. This is illustrated by the figures.

La température à laquelle est porté l'air chaud dans la chambre d'air pulsé 1 et qui parvient à la bouche 6 est sensi­blement plus élevée que la température de l'air ambiant.The temperature to which the hot air is brought into the forced air chamber 1 and which reaches the mouth 6 is significantly higher than the temperature of the ambient air.

Si l'on considère une température de 60°C dans la chambre d'air chaud pulsé, l'entraînement par cet air chaud de l'air secondaire à une température d'environ 20°C permettra d'obtenir à la sortie de la bouche 6 un débit d'air ayant une température d'en­viron 36°C. Le débit de l'air primaire à une température plus élevée peut être égal ou inférieur au débit de l'air secondaire. Ceci est une question de choix sans influence sur le principe de l'invention.If we consider a temperature of 60 ° C in the forced air chamber, the entrainment by this hot air of the secondary air at a temperature of about 20 ° C will allow to obtain at the outlet of the mouth 6 an air flow having a temperature of about 36 ° C. The primary air flow at a higher temperature may be equal to or less than the secondary air flow. This is a question of choice without influencing the principle of the invention.

De toute évidence et ainsi qu'il résulte de la descrip­tion qui vient d'en être donnée, l'air ambiant se trouve recyclé dans le local à chauffer et on n'a donc pas à craindre l'introduction d'air recyclé à partir de pièces ou de locaux qui peuvent ne pas convenir à cet effet. Il est visé par là qu'on ne désire pas recycler certains volumes d'air chargé d'odeurs ou de l'air contenant un degré d'humidité exceptionnellement élevé.Obviously and as follows from the description which has just been given, the ambient air is recycled in the room to be heated and there is therefore no need to fear the introduction of recycled air from rooms or premises which may not be suitable for this purpose. It is intended there that one does not wish to recycle certain volumes of air charged with odors or air containing an exceptionally high degree of humidity.

En dehors de cet avantage très particulier, l'unité selon l'invention se distingue aussi de toute autre conception actuel­lement appliquée et cela par son concept spécifique s'adaptant à des locaux habités. Le dispositif permet en effet, dans une forme d'exécution particulièrement avantageuse, une installation invisible et intégrée dans le cache-rail d'un rideau au-dessus d'une fenêtre, tout en favorisant un courant d'air dirigé vers le haut et inspiré par induction, en s'opposant, de plus, au courant d'air froid descendant le long des surfaces vitrées, lequel phénomène se produit régulièrement au détriment du confort thermique.Apart from this very particular advantage, the unit according to the invention is also distinguished from any other design currently applied and this by its specific concept adapting to inhabited premises. The device indeed allows, in a particularly advantageous embodiment, an invisible installation and integrated in the rail cover of a curtain above a window, while favoring an air flow directed upwards and inspired by induction, by opposing, moreover, the current of cold air descending along the glass surfaces, which phenomenon occurs regularly at the expense of thermal comfort.

L'invention n'est cependant pas limitée à la forme d'exécution décrite ci-dessus et bien des modifications pourraient y être apportées sans sortir du cadre de la présente demande de brevet.The invention is however not limited to the embodiment described above and many modifications could be made to it without departing from the scope of the present patent application.

Claims (4)

1. Unité d'induction et de diffusion d'air chaud destiné à chauffer un espace tel qu'une chambre, par exemple, caracté­risée en ce qu'elle comporte, pour chaque espace à chauffer, au moins un conduit de pulsion d'air chaud (2) débitant vers une chambre d'air pulsé (1) un courant d'air primaire chaud entraînant au travers d'une chambre d'induction (4) un courant d'air secondaire à température ambiante, le débit d'air primaire chaud étant porté à une température supérieure à celle de l'air ambiant, c.à.d. la température de l'espace considéré.1. Unit for the induction and diffusion of hot air intended to heat a space such as a room, for example, characterized in that it comprises, for each space to be heated, at least one air supply duct hot (2) delivering to a forced air chamber (1) a current of hot primary air driving through an induction chamber (4) a secondary air stream at room temperature, the air flow hot primary being brought to a temperature higher than that of ambient air, i.e. the temperature of the space considered. 2. Unité selon la revendication 1, caractérisée en ce que la chambre d'air pulsé (1) précitée comporte une fente longitudinale constituant un dispositif d'injection (3) et orientée de manière à entraîner le courant d'air secondaire au travers de ladite chambre d'induction (4).2. Unit according to claim 1, characterized in that the aforesaid forced air chamber (1) has a longitudinal slot constituting an injection device (3) and oriented so as to entrain the secondary air flow through said induction chamber (4). 3. Unité selon la revendication 1, caractérisée en ce que la chambre d'air pulsé (1) précitée comporte une série d'ajutages (11) dirigés de manière à entraîner le courant d'air se­condaire au travers de ladite chambre d'induction (4).3. Unit according to claim 1, characterized in that the aforesaid forced air chamber (1) comprises a series of nozzles (11) directed so as to entrain the stream of secondary air through said induction chamber (4). 4. Unité selon l'une quelconque des revendications 1 - 3, caractérisée en ce que le courant d'air secondaire est entraîné entre un profilé formant cache-rail (9) pour un rideau (10) et la chambre d'iar pulsé (1) disposée au-dessus dudit profilé.4. Unit according to any one of claims 1 - 3, characterized in that the secondary air flow is entrained between a profile forming a rail cover (9) for a curtain (10) and the pulsed air chamber ( 1) disposed above said profile.
EP19900200536 1989-03-20 1990-03-07 Hot air induction and diffusion unit for heating a space, for example a room Withdrawn EP0389021A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE8900298A BE1002944A7 (en) 1989-03-20 1989-03-20 HOT AIR INDUCTION AND DIFFUSION UNIT FOR HEATING A SPACE SUCH AS A CHAMBER, FOR EXAMPLE.
BE8900298 1989-03-20

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EP0389021A2 true EP0389021A2 (en) 1990-09-26
EP0389021A3 EP0389021A3 (en) 1991-06-05

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EP19900200536 Withdrawn EP0389021A3 (en) 1989-03-20 1990-03-07 Hot air induction and diffusion unit for heating a space, for example a room

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BE (1) BE1002944A7 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR968359A (en) * 1948-06-25 1950-11-24 Hot air heating process and apparatus for carrying out this process
EP0003811A2 (en) * 1978-02-24 1979-09-05 Ditta FERRARI CLAUDIO di LUIGI FERRARI &amp; C. S.p.A. Method and plant for the heating and/or conditioning of rooms
WO1987003071A1 (en) * 1985-11-13 1987-05-21 SÖDERSTRÖM, Bo An air supply device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR968359A (en) * 1948-06-25 1950-11-24 Hot air heating process and apparatus for carrying out this process
EP0003811A2 (en) * 1978-02-24 1979-09-05 Ditta FERRARI CLAUDIO di LUIGI FERRARI &amp; C. S.p.A. Method and plant for the heating and/or conditioning of rooms
WO1987003071A1 (en) * 1985-11-13 1987-05-21 SÖDERSTRÖM, Bo An air supply device

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Publication number Publication date
EP0389021A3 (en) 1991-06-05
BE1002944A7 (en) 1991-09-17

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