EP1980794B1 - Gas-fired air heater with reversible air-conditioner - Google Patents

Gas-fired air heater with reversible air-conditioner Download PDF

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Publication number
EP1980794B1
EP1980794B1 EP08006964A EP08006964A EP1980794B1 EP 1980794 B1 EP1980794 B1 EP 1980794B1 EP 08006964 A EP08006964 A EP 08006964A EP 08006964 A EP08006964 A EP 08006964A EP 1980794 B1 EP1980794 B1 EP 1980794B1
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EP
European Patent Office
Prior art keywords
gas
air
exchanger
building
unit
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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.)
Not-in-force
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EP08006964A
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German (de)
French (fr)
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EP1980794A1 (en
Inventor
Yves Cazard
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Yahtec Sas
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Yahtec Sas
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Publication of EP1980794A1 publication Critical patent/EP1980794A1/en
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Publication of EP1980794B1 publication Critical patent/EP1980794B1/en
Not-in-force legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/26—Refrigerant piping
    • F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • F24F11/47—Responding to energy costs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/34—Heater, e.g. gas burner, electric air heater

Definitions

  • the invention relates to gas heaters with a cold chiller direct expansion or chilled water, used for the need for heating and cooling of commercial and industrial premises.
  • the present invention aims to overcome the disadvantages mentioned above.
  • This invention as characterized in the claims, solves the problem of using a method and creating a gas heater with a direct expansion chiller or chilled water, made in two very compact units facilitating their operation. implantation, avoiding, during momentary needs of heat, to make use of the supplement of energy consuming heating resistances, by inversion of the cycle of the cold group transforming the cold battery into hot battery, by using the principle of the heat pump, until the gas exchanger takes over the system if necessary, while preventing air from passing into the cold battery in winter to prevent clogging of it and that of its filter.
  • the aerothermal process of air conditioning of premises and buildings, operating on gas and according to a thermodynamic cycle with a refrigerant gas, whose heating function is provided by a gas exchanger and the refrigeration function by a refrigerant unit comprising a compressor, an evaporator and a condenser, the circulation of air being provided by fans, consists in associating, within the room or the building, the gas exchanger with a direct expansion or chilled water battery, to arrange the refrigerant group to outside the room, near the gas exchanger, and manage the installation by an electronic box selecting the form of energy best suited to its cost.
  • the cold unit is turned on when the indoor room thermostat is in cold demand, or turns on the gas burner of the heat exchanger if it is in heat demand (room thermostat).
  • room thermostat that the outside temperature is not too low (+ 5 ° C) and that it makes it possible to obtain a correct coefficient of performance of the cooling group, this one starts in use and reverses its cycle to deliver hot on the battery of the indoor unit to the building; this, by automatic selection of the form of energy best suited to its cost.
  • the device for implementing the method as set out above consisting of two units, one of which, located inside the building, comprises a high-efficiency tubular heat exchanger, a multi-torch gas burner.
  • the advantages obtained by this invention consist mainly in that the realization of the device in two units of small size facilitates their assembly and their implementation and in that the automatic selection of the most economical heating mode, as well as the functionality of the exchanger gas, can reduce by three the necessary electrical energy, since any heating supplement by heating elements is replaced by the gas exchanger, more economical in this case.
  • the Figures 1 and 2 represent an aerothermal gas-air conditioner system made up of an indoor unit 1 having the heater-air conditioner gas, diffusing the conditioned air by a blast gate 10 to fins 11 inlet nozzle, and a suction connection 6 for the flue gas exhaust 8 and combustion air suction 9; said indoor unit 1 being connected to a gas source via a pipe 7 and to the outdoor unit 2 via a thermal insulating connection sheath 3 surrounding the tubes for the return of the refrigerant and the electrical connection of the two units 1, 2 .
  • the gas-air-conditioner unit constituting the indoor unit 1 of the installation is installed directly in the room concerned, with connection by wall-mounted suction pad 6 or on the roof.
  • the cold unit constituting the outdoor unit 2 is mounted on the other side of the partition wall. It can be installed directly on the floor, hung on the wall or placed on the roof when no space is available around the building.
  • the blower grid 10 comprises fins 11 for directing the flow of air. In cold mode, the fins 11 are oriented horizontally to obtain a horizontal blow, while in hot mode, they tilt to the ground according to the installation height of the unit 1, to obtain a blowing without stratification.
  • the installation according to the invention is intended primarily for the air conditioning of commercial and industrial premises, but nothing would preclude its use in other kinds of premises, subject to minor adaptations of the mainspring of the man of business, without departing from the scope of this application.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Air Conditioning Control Device (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

The method involves assuring a heating function of gas by a gas exchanger and a cooling function by a refrigerating unit. The refrigerating unit is set in operation when an air thermostat is in a cold state, or the burnt gas from the exchanger is ignited when the exchanger is in hot state. A performance coefficient of the refrigerating unit is assured when an outer temperature is too low. The refrigerating unit is set in operation and its cycle is reversed for delivering the heat on a battery situated inside in an inner unit (1) mounted inside the building by automatic selection of energy. An independent claim is also included for a device for implementing a method of conditioning air in building, comprising an inner unit.

Description

L'invention concerne les aérothermes à gaz équipés d'une batterie froide à détente directe ou à eau glacée, utilisés pour le besoin de chauffage et de climatisation des locaux commerciaux et industriels.The invention relates to gas heaters with a cold chiller direct expansion or chilled water, used for the need for heating and cooling of commercial and industrial premises.

Deux sortes d'appareils existent actuellement sur le marché :

  1. 1) Des appareils intégrant dans un même module l'échangeur à gaz, la batterie d'évaporateur, le condenseur, ainsi que le compresseur. Ces appareils sont de grandes dimensions et relativement lourds. Leur implantation s'effectue de ce fait à l'extérieur des bâtiments, et plus particulièrement sur les toits, ce qui impose de disposer d'une infrastructure adaptée et le recours à des moyens de levage de forte capacité, tels que grue ou hélicoptère. Leur installation est de type centralisé, ce qui oblige de disposer d'un réseau de gaine pour répartir l'air à l'intérieur des bâtiments.
  2. 2) Des appareils tels que décrits dans JP 03 291 432 , JP 62 280 525 , JP 55 099536 et US 2002/112495 constitués de deux unités, dont l'une est placée à l'extérieur et l'autre à l'intérieur ; une liaison par deux tubes de cuivre étant nécessaire pour faire circuler le gaz frigorigène. Le chaud et le froid étant obtenus par l'intermédiaire d'un compresseur permettant de réaliser le cycle thermodynamique correspondant, les énergies froide et chaude étant équivalentes. Ainsi, lorsque l'installation est en demande de chaleur et que la température extérieure chute en dessous de cinq degrés, l'unité extérieure effectue des inversions de cycle pour dégivrer la batterie extérieure, ce qui diminue le coefficient de performance de l'unité. De plus, lorsque la température extérieure est trop basse, le groupe compresseur s'arrête et des résistances électriques placées dans l'unité intérieure prennent la relève ; or, ce besoin d'énergie n'est nécessaire que quelques jours par an, ce qui oblige à recourir à une installation électrique appropriée et à souscrire un abonnement trois fois supérieur au besoin courant. L'installation de ces appareils est cependant décentralisée et la répartition de l'air dans les bâtiments s'effectue directement.
Two kinds of devices currently exist on the market:
  1. 1) Devices integrating the gas heat exchanger, the evaporator coil, the condenser and the compressor in a single module. These devices are large and relatively heavy. Their implementation is therefore done outside buildings, especially on roofs, which requires having a suitable infrastructure and the use of high capacity lifting means, such as crane or helicopter. Their installation is of centralized type, which forces to have a network of sheath to distribute the air inside the buildings.
  2. 2) Devices as described in JP 03 291 432 , JP 62 280 525 , JP 55 099536 and US 2002/112495 consist of two units, one of which is placed on the outside and the other on the inside; a connection by two copper tubes being necessary to circulate the refrigerant gas. The hot and the cold being obtained by means of a compressor for carrying out the corresponding thermodynamic cycle, the cold and hot energies being equivalent. Thus, when the installation is in heat demand and the outdoor temperature drops below five degrees, the outdoor unit performs cycle reversals to defrost the outdoor battery, which decreases the unit's coefficient of performance. In addition, when the outside temperature is too low, the compressor unit stops and electrical resistors placed in the indoor unit take over; however, this need for energy is only a few days a year, which makes it necessary to use an appropriate electrical installation and to take out a subscription three times higher than the current need. The installation of these devices is however decentralized and the distribution of air in the buildings is done directly.

La présente invention a pour but de remédier aux inconvénients ci-dessus évoqués. Cette invention, telle qu'elle est caractérisée dans les revendications, résout le problème consistant à utiliser un procédé et à créer un aérotherme à gaz équipé d'une batterie froide à détente directe ou à eau glacée, réalisé en deux unités très compactes facilitant leur implantation, évitant, lors de besoins momentanés de chaleur, de recourir à l'appoint de résistances chauffantes consommatrices d'énergie, par inversion du cycle du groupe froid transformant la batterie froide en batterie chaude, en utilisant le principe de la pompe à chaleur, jusqu'à ce que l'échangeur gaz prenne la relève du système si nécessaire, tout en empêchant l'air de passer dans la batterie froide en hiver pour éviter l'encrassement de celle-ci et celui de son filtre.The present invention aims to overcome the disadvantages mentioned above. This invention, as characterized in the claims, solves the problem of using a method and creating a gas heater with a direct expansion chiller or chilled water, made in two very compact units facilitating their operation. implantation, avoiding, during momentary needs of heat, to make use of the supplement of energy consuming heating resistances, by inversion of the cycle of the cold group transforming the cold battery into hot battery, by using the principle of the heat pump, until the gas exchanger takes over the system if necessary, while preventing air from passing into the cold battery in winter to prevent clogging of it and that of its filter.

Le procédé aérothermique de conditionnement d'air de locaux et de bâtiments, fonctionnant au gaz et selon un cycle thermodynamique à gaz frigorigène, dont la fonction chauffage est assurée par un échangeur gaz et la fonction réfrigération par un groupe réfrigérant comportant un compresseur, un évaporateur et un condenseur, la circulation d'air étant assurée par des ventilateurs, consiste à associer, à l'intérieur du local ou du bâtiment, l'échangeur gaz à une batterie à détente directe ou à eau glacée, à disposer le groupe réfrigérant à l'extérieur du local, à proximité de l'échangeur gaz, et à gérer l'installation par un boîtier électronique sélectionnant la forme d'énergie la mieux adaptée en fonction de son coût.The aerothermal process of air conditioning of premises and buildings, operating on gas and according to a thermodynamic cycle with a refrigerant gas, whose heating function is provided by a gas exchanger and the refrigeration function by a refrigerant unit comprising a compressor, an evaporator and a condenser, the circulation of air being provided by fans, consists in associating, within the room or the building, the gas exchanger with a direct expansion or chilled water battery, to arrange the refrigerant group to outside the room, near the gas exchanger, and manage the installation by an electronic box selecting the form of energy best suited to its cost.

Ainsi, le groupe froid se met en service quand le thermostat intérieur d'ambiance est en demande de froid, ou allume le brûleur gaz de l'échangeur si celui-ci est en demande de chaleur (thermostat d'ambiance). Lorsque le thermostat d'ambiance est en demande de chaleur, que la température extérieure n'est pas trop basse (+ 5 °C) et qu'elle permet d'obtenir un coefficient de performance correct du groupe réfrigérant, celui-ci se met en service et inverse son cycle pour délivrer du chaud sur la batterie de l'unité intérieure au bâtiment ; ceci, par sélection automatique de la forme d'énergie la mieux adaptée en fonction de son coût.Thus, the cold unit is turned on when the indoor room thermostat is in cold demand, or turns on the gas burner of the heat exchanger if it is in heat demand (room thermostat). When the room thermostat is in heat demand, that the outside temperature is not too low (+ 5 ° C) and that it makes it possible to obtain a correct coefficient of performance of the cooling group, this one starts in use and reverses its cycle to deliver hot on the battery of the indoor unit to the building; this, by automatic selection of the form of energy best suited to its cost.

Le dispositif de mise en oeuvre du procédé tel qu'exposé ci-dessus, constitué de deux unités, dont l'une, située à l'intérieur du bâtiment, comporte un échangeur tubulaire à haut rendement, un brûleur à gaz multi-torches à allumage électronique, un double ventilateur centrifuge à action, une batterie d'échange et un filtre sur l'aspiration d'air avec contrôle d'encrassement, et dont l'autre, située à l'extérieur, à proximité immédiate de la première, comporte le groupe réfrigérant se caractérise en ce que la batterie d'échange est munie d'un clapet de by-pass, évitant à l'air de la traverser en hiver, lorsque l'appareil fonctionne au gaz et en ce que le fonctionnement du dispositif est contrôlé par un boîtier électronique asservi au coût des différentes formes d'énergie.The device for implementing the method as set out above, consisting of two units, one of which, located inside the building, comprises a high-efficiency tubular heat exchanger, a multi-torch gas burner. electronic ignition, a double acting centrifugal fan, a battery exchange and a filter on the air intake with contamination control, and the other, located outside, in close proximity to the first, includes the refrigeration unit is characterized in that the exchange battery is provided with a by-pass valve, avoiding the air to cross it in winter, when the device runs on gas and in that the operation of the The device is controlled by an electronic control unit that is controlled by the cost of the different forms of energy.

Les avantages obtenus par cette invention consistent principalement en ce que la réalisation du dispositif en deux unités de faible encombrement facilite leur montage et leur implantation et en ce que la sélection automatique du mode de chauffage le plus économique, ainsi que la fonctionnalité de l'échangeur gaz, permettent de réduire par trois l'énergie électrique nécessaire, puisque tout appoint de chaleur par résistances chauffantes est remplacé par l'échangeur gaz, plus économique dans ce cas.The advantages obtained by this invention consist mainly in that the realization of the device in two units of small size facilitates their assembly and their implementation and in that the automatic selection of the most economical heating mode, as well as the functionality of the exchanger gas, can reduce by three the necessary electrical energy, since any heating supplement by heating elements is replaced by the gas exchanger, more economical in this case.

D'autres caractéristiques et avantages apparaîtront dans la description qui va suivre d'une installation aérothermique gaz - climatiseur, destinée à satisfaire le besoin de conditionnement d'air de locaux commerciaux et industriels, réalisée selon l'invention, donnée à titre d'exemple non limitatif, au regard des dessins annexés, sur lesquels :

  • la figure 1 montre, en perspective, l'installation vue de l'intérieur, avec représentation des parties cachées en trait pointillé,
  • la figure 2 montre, en perspective, l'installation vue de l'extérieur, avec représentation en trait pointillé des parties cachées.
Other features and advantages will become apparent in the following description of an aerothermal gas-air conditioner installation, intended to satisfy the need for air conditioning of commercial and industrial premises, produced according to the invention, given by way of example non-limiting, with reference to the accompanying drawings, in which:
  • the figure 1 shows, in perspective, the installation seen from the inside, with representation of the hidden parts in dashed line,
  • the figure 2 shows, in perspective, the installation seen from the outside, with dotted line representation of the hidden parts.

Les figures 1 et 2 représentent une installation aérothermique gaz-climatiseur constituée d'une unité intérieure 1 comportant l'aérotherme gaz-climatiseur, diffusant l'air conditionné par une grille de soufflage 10 à ailettes 11 d'orientation du flux, et une connexion ventouse 6 pour l'évacuation des fumées 8 et l'aspiration d'air de combustion 9 ; ladite unité intérieure 1 étant reliée à une source de gaz par une conduite 7 et à l'unité extérieure 2 par une gaine de connexion 3 à isolant thermique entourant les tubes aller et retour du fluide frigorigène et la liaison électrique des deux unités 1, 2. The Figures 1 and 2 represent an aerothermal gas-air conditioner system made up of an indoor unit 1 having the heater-air conditioner gas, diffusing the conditioned air by a blast gate 10 to fins 11 inlet nozzle, and a suction connection 6 for the flue gas exhaust 8 and combustion air suction 9; said indoor unit 1 being connected to a gas source via a pipe 7 and to the outdoor unit 2 via a thermal insulating connection sheath 3 surrounding the tubes for the return of the refrigerant and the electrical connection of the two units 1, 2 .

Comme on le remarque, en examinant conjointement les figures 1 et 2, l'aérotherme gaz - climatiseur constituant l'unité intérieure 1 de l'installation est installé directement dans le local concerné, avec raccordement par ventouse murale 6 ou en toiture. Le groupe froid constituant l'unité extérieure 2 est monté de l'autre côté du mur de séparation. Il peut être installé directement sur le sol, accroché au mur ou disposé en toiture lorsque aucun espace n'est disponible autour du bâtiment.As noted, by examining jointly the Figures 1 and 2 , the gas-air-conditioner unit constituting the indoor unit 1 of the installation is installed directly in the room concerned, with connection by wall-mounted suction pad 6 or on the roof. The cold unit constituting the outdoor unit 2 is mounted on the other side of the partition wall. It can be installed directly on the floor, hung on the wall or placed on the roof when no space is available around the building.

On remarque aussi que les unités 1 et 2 ont été conçues pour n'occuper qu'un très faible espace, compte tenu de leur réalisation plate qui permet une grande souplesse d'utilisation. Le soufflage d'air conditionné s'effectue horizontalement pour éviter les courants d'air. La grille de soufflage 10 comporte des ailettes 11 d'orientation du flux d'air. En mode froid, les ailettes 11 s'orientent horizontalement pour obtenir un soufflage horizontal, alors qu'en mode chaud, elles s'inclinent vers le sol en fonction de la hauteur d'installation de l'unité 1, afin d'obtenir un soufflage sans stratification.We also note that the units 1 and 2 were designed to occupy a very small space, given their flat design that allows great flexibility of use. The conditioned air is blown horizontally to prevent drafts. The blower grid 10 comprises fins 11 for directing the flow of air. In cold mode, the fins 11 are oriented horizontally to obtain a horizontal blow, while in hot mode, they tilt to the ground according to the installation height of the unit 1, to obtain a blowing without stratification.

L'installation selon l'invention est destinée principalement au conditionnement d'air de locaux commerciaux et industriels, mais rien ne s'opposerait à son utilisation dans d'autres sortes de locaux, sous réserve d'adaptations mineures du ressort de l'homme de métier, sans sortir du champ d'application de la présente demande.The installation according to the invention is intended primarily for the air conditioning of commercial and industrial premises, but nothing would preclude its use in other kinds of premises, subject to minor adaptations of the mainspring of the man of business, without departing from the scope of this application.

Claims (2)

  1. Air-heating process for conditioning the air in buildings and parts of buildings which is gas-fired and operates in accordance with a refrigerating-gas thermodynamic cycle, the air being heated by a gas exchanger and the cooled by a refrigeration unit, comprising a compressor, an evaporator and a condenser, the air being circulated by means of ventilators, consisting of the association within the building or part thereof of the gas exchanger and a direct expansion coil or cold water coil, the disposition outside the building or part thereof in proximity to the gas exchanger of the refrigeration unit and the automatic management the whole process,
    characterised in that
    the refrigeration unit is set in operation when the interior ambient temperature thermostat requires cold or ignites the gas burner of the exchanger when the latter requires heat and, where the exterior temperature is not too low and is sufficient to provide a reasonable refrigeration unit performance coefficient, said unit is set in operation and inverts its cycle in order to supply heat to the coil located in the unit mounted inside the building by automatically selecting the best adapted form of energy depending on its cost.
  2. Device for implementing the process disclosed in claim 1 comprising two units (1, 2), one (1) being located inside the building and comprising a high-yield tubular exchanger, an electronically ignited multi-torch gas burner, a double centrifugal impulse ventilator, an exchange coil and an air intake filter with contamination level detection, and the other (2) being located outside in the immediate proximity of the first and comprising the refrigeration unit,
    characterised in that
    the exchange coil is provided with a by-pass valve preventing the air from passing through it in winter when the device is gas-fired, and the operation of the device is controlled by an electronic control unit triggered by the cost of the various forms of energy.
EP08006964A 2007-04-10 2008-04-08 Gas-fired air heater with reversible air-conditioner Not-in-force EP1980794B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0702588A FR2914988B1 (en) 2007-04-10 2007-04-10 AEROTHERMAL GAS AND REVERSIBLE AIR CONDITIONER

Publications (2)

Publication Number Publication Date
EP1980794A1 EP1980794A1 (en) 2008-10-15
EP1980794B1 true EP1980794B1 (en) 2009-12-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08006964A Not-in-force EP1980794B1 (en) 2007-04-10 2008-04-08 Gas-fired air heater with reversible air-conditioner

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EP (1) EP1980794B1 (en)
AT (1) ATE450759T1 (en)
DE (1) DE602008000330D1 (en)
FR (1) FR2914988B1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5599536A (en) * 1979-01-22 1980-07-29 Hitachi Ltd Combustor-fitted air conditioner
JPS62280525A (en) * 1986-05-27 1987-12-05 Mitsubishi Electric Corp Cooling and heating machine
JPH0613929B2 (en) * 1990-04-06 1994-02-23 リンナイ株式会社 Air conditioner for air conditioning
JP3291432B2 (en) 1996-06-11 2002-06-10 シャープ株式会社 Liquid crystal display device and terminal device using the same
US5967411A (en) * 1998-01-23 1999-10-19 Carrier Corporation Method and apparatus for controlling supplemental heat in a heat pump system
FR2802620B1 (en) * 1999-12-20 2002-03-22 Valeo Climatisation HEATING AND / OR AIR CONDITIONING SYSTEM WITH DETECTION OF FILTER CLOGGING
US6457653B1 (en) * 2001-02-21 2002-10-01 Nordyne, Inc. Blowerless air conditioning system
US7085626B2 (en) * 2004-04-15 2006-08-01 York International Corporation Method and apparatus to prevent low temperature damage using an HVAC control

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Publication number Publication date
DE602008000330D1 (en) 2010-01-14
EP1980794A1 (en) 2008-10-15
ATE450759T1 (en) 2009-12-15
FR2914988A1 (en) 2008-10-17
FR2914988B1 (en) 2009-12-18

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