EP0364381A1 - Vorrichtung zur Klimatisierung von Innenluft - Google Patents

Vorrichtung zur Klimatisierung von Innenluft Download PDF

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Publication number
EP0364381A1
EP0364381A1 EP89450014A EP89450014A EP0364381A1 EP 0364381 A1 EP0364381 A1 EP 0364381A1 EP 89450014 A EP89450014 A EP 89450014A EP 89450014 A EP89450014 A EP 89450014A EP 0364381 A1 EP0364381 A1 EP 0364381A1
Authority
EP
European Patent Office
Prior art keywords
exchanger
air
tubes
outlet
inlet
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
EP89450014A
Other languages
English (en)
French (fr)
Other versions
EP0364381B1 (de
Inventor
Jean-Louis Michel
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.)
SAFRAIR SA
Original Assignee
SAFRAIR 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
Priority claimed from FR8813672A external-priority patent/FR2637966B1/fr
Application filed by SAFRAIR SA filed Critical SAFRAIR SA
Priority to AT89450014T priority Critical patent/ATE90442T1/de
Publication of EP0364381A1 publication Critical patent/EP0364381A1/de
Application granted granted Critical
Publication of EP0364381B1 publication Critical patent/EP0364381B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0087—Indoor units, e.g. fan coil units with humidification means
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0067—Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/005—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted on the floor; standing on the floor
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • 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
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/037—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing with humidification means
    • 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
    • F24F2221/22—Cleaning ducts or apparatus
    • F24F2221/225—Cleaning ducts or apparatus using a liquid

Definitions

  • the present invention relates to an indoor air conditioning device.
  • the device according to the invention is more particularly suitable for equipping enclosures in which physical conditions of air such as temperature and hygrometry or others must be maintained, under strict conditions of cleanliness.
  • enclosures are for example cheese dairies.
  • these known devices comprise on the air flow, generated by one or more fans, hot and cold heat exchangers of the finned coil type which tend to retain dust and therefore to cause accumulations thereof.
  • these devices also have an exchanger for heating the humidification water of the air flow to be diffused and therefore require simultaneous production of heat for the water and cooling for the inlet air.
  • These systems use a large amount of energy.
  • the present invention aims to overcome these drawbacks by proposing a thermally very efficient indoor air conditioning device, providing a clean treated air flow and offering great ease of cleaning.
  • the device according to the invention is provided with at least one fan, at least one air inlet chamber and at least one air outlet chamber to which it is connected.
  • a duct for blowing and diffusing the treated air is essentially characterized in that it comprises at least one heat exchanger provided with several internally smooth tubes arranged in a heat transfer fluid and through which the air flow to be treated d an inlet chamber to an outlet chamber and means for cleaning the tubes of the exchanger or exchangers in which the air flow is treated.
  • the indoor air conditioning device is intended to regulate the temperature and the humidity of the air in a closed enclosure.
  • the device according to the invention is provided with at least one fan 1 generating a flow of air to be treated, that is to say, to be heated or cooled and humidified.
  • the fan or fans 1 of the device according to the invention are of the helical type and therefore deliver an air flow parallel to their axis of rotation.
  • the electric motor type drive motor of each fan is arranged so as not to be in contact with the air flow.
  • the device according to the invention is provided with at least one inlet chamber 2 for the air flow to be treated supplied by the fan or fans 1 and with at least one outlet chamber 3 for the treated air on which is intended to be connected to a duct 4 for blowing and diffusing the treated air into the corresponding enclosure.
  • the packaging device considered comprises only a single fan 1, a single air inlet chamber 2, an outlet chamber 3 and a blowing duct 4.
  • the interior air conditioning device comprises at least one heat exchanger 5 provided with several internally smooth tubes 6 arranged in a heat transfer fluid and through which the air to be treated passes from an inlet chamber 2 to an outlet chamber 3 and means for cleaning the tubes 6 of the exchanger or exchangers 5 in which the air flow is treated.
  • the device according to the invention is provided with a single air cooling exchanger 5 provided with a plurality of 6 smooth tubes.
  • This exchanger 5 has the function of cooling the air flow generated by the fan 1.
  • the 6 smooth tubes through which the air to be treated passes are surrounded by a heat transfer fluid and establish communication between the inlet chamber 2 and the outlet chamber 3 of the conditioning device.
  • the heat transfer fluid preferably consists of ice water without this being limiting.
  • the number of tubes 6 and the size thereof define the heat exchange surface between the air and the heat transfer fluid.
  • the said tubes In order, on the one hand, to avoid accumulations of dust and impurities in the tubes 6 of the exchanger 5, the said tubes have a smooth internal surface and are devoid of their length and their surface of salient or re-entrant angles.
  • the tubes 6 of the device according to the invention has a circular interior cross section.
  • the impurities which can be carried by the air are difficult to deposit inside the tubes 6 of the exchanger 5, these being devoid of protrusions on their internal surface and their cleaning is all the easier.
  • the air inlet 2 and outlet 3 chambers and the exchanger 5 are aligned on the same unbroken line.
  • the tubes 6 of the exchanger 5 are preferably parallel to the alignment axis of the inlet 2 and outlet 3 chambers.
  • the outlet chamber 3 is cylindrical and the inlet chamber 2 has a conical portion whose conicity is oriented towards the fan 1.
  • the chambers 2 and 3 and the cooling exchanger 5 are aligned on the same rectilinear axis and the tubes 6 are straight and parallel to the alignment axis.
  • the tubes 6 of the exchanger 5 have at their end opening into the inlet chamber 2 a flaring 7 of polygonal cross section. The edges of the flares 7 of the adjacent tubes 6 are joined and the total entry surface of said tubes occupies almost the total surface of the face of the heat exchanger 5.
  • the flaring 7 is of square section but it goes without saying that this section could be in the shape of a regular polygon such as a hexagon.
  • the end of the tubes 6 opening into the outlet chamber 3 also has a flare 7 of polygonal cross section.
  • the flaring section of the ends of the tubes 6 opening into the outlet chamber are square, but it goes without saying that this could be in the shape of a regular polygon such as a hexagon.
  • the flares 7 of the tubes 6 are aligned from one end to the other of the said tubes.
  • the air inlet chamber 2 is open at its end and receives the blades of the fan 1.
  • the axis of rotation of the latter is preferably coaxial with the axis of said inlet chamber 2.
  • the outlet chamber 3 of the treated air, therefore downstream of the cylindrical cooling exchanger 5 is open to communicate with the blowing duct 4 which is connected to it directly or not.
  • the air conditioning device is provided at the outlet chamber 3 with an exchanger 8 for heating the air coming from the cold exchanger 5 which makes it possible to heat the air treated in the case where it would have been too cooled at the outlet of the first exchanger and / or in the case where the air temperature of the enclosure must be increased.
  • the heating exchanger 8 is arranged in the air flow.
  • the air heating exchanger 8 is of a constitution identical to that of the cold exchanger 5, that is to say, that it is provided with a plurality of tubes 6 parallel to the alignment axis of the inlet 2 and outlet 3 chambers and arranged in a container filled with a heat-transfer liquid such as hot water.
  • This heat exchanger 8 occupies the entire section of the outlet chamber 3 and divides the latter into two parts.
  • tubes 6 of this heat exchanger 8 are also provided on their ends with flares 7 of polygonal and preferably square section.
  • the heat exchanger 8 consists of metallic electrical resistances of food quality constituted by fins arranged parallel to the alignment axis of the inlet 2 and outlet 3 chambers.
  • said heating exchanger 8 is constituted by a hermetic low pressure steam exchanger.
  • the heating exchanger 8 is disposed outside the flow of treated air and is in contact with the external wall of the outlet chamber. 3.
  • the device according to the invention can receive any of the above-mentioned types of exchanger in order to be able to adapt to the energy available at the implantation site.
  • outlet chamber 3 can be mounted at least one humidifier of the air leaving said first exchanger.
  • this or these humidifiers consist of atomizers which spray the water in the form of very fine droplets, which promotes the homogeneity of the water with the air.
  • This or these humidifiers is or are supplied with food-grade pressurized water produced by an independent treatment center.
  • These cleaning means allow the washing of the tubes 6 of the exchangers 5 and 8 but also of the inlet 2 and outlet 3 chambers and of the fan 1 and prevents pollution of the air surrounding the conditioning device.
  • These cleaning means comprise at least one means 10 for injecting detergents, a recovery system and evacuation of said detergents and a set of isolation of the air conditioning device from the ambient air of the enclosure.
  • At least one injection means 10 is placed in the inlet chamber 2 and in the outlet chamber 3 in order to wash both of them, the tubes 6 of the exchangers through which passes the air flow to be treated and the fan blades 1.
  • an injection means 10 is placed between the cold exchanger 5 and the hot exchanger 8 and another injection means 10 is placed downstream of the exchanger hot 8 according to the direction of the flow to be treated.
  • each injection means 10 is constituted by at least one rotary arm 11 on which are arranged nozzles 12 for spraying the washing product.
  • This washing arm is rotated by the pressure of the washing liquid, the axis of rotation of said arm preferably being coaxial with the longitudinal median axis of the device.
  • the arm 11 is provided with a series of nozzles 12 oriented so as to ensure the cleaning of the parts arranged on either side of its plane of rotation.
  • the washing injection means 10 are constituted by at least one nozzle 13 fixed on the face of the cold exchanger 5 and oriented towards the fan 1 and by at least one hollow spherical head perforated with several orifices 10A placed opposite the fan 1 relative to the exchanger 5.
  • the nozzles 13 fixed on the cold exchanger 5 allow the cleaning of the internal wall of the inlet chamber 2 and of one face of the blades of the fan 1.
  • the spherical head 10A makes it possible to clean the face of the cold exchanger 5 carrying the nozzles 13, the inner wall of the inlet chamber 2 and the other face of the blades of the fan 1.
  • any other type of means 10 for injecting detergents may be suitable insofar as it covers a large area.
  • Washing involves the successive injection of suitable detergents and then a rinsing product such as water, in abundant quantity and under pressure or not.
  • a rinsing product such as water, in abundant quantity and under pressure or not.
  • hot water can be used as a detergent.
  • the air conditioning device is isolated from the outside.
  • the isolation assembly comprises a shutter portion 20 of the air inlet chamber 2, and a device for shutting off the outlet chamber 3.
  • the shutter part 20 of the inlet chamber 2 of the conditioning device is placed in abutment against the edge of said entry room to close it.
  • a seal may be provided on the obturating part 20 bearing against the end of the inlet chamber.
  • the shutter part 20 of the isolation assembly when it is spaced from the inlet chamber 2 defines the opening of said inlet chamber through which the air intake of the fan 1 takes place.
  • This shutter portion 20 can be moved in translation towards the opening of the inlet chamber 2 by any known means such as a jack (not shown) and is guided in translation by slides or the like.
  • Said shutter part can be locked on the inlet chamber by any means known for example by the drive cylinder in translation.
  • the obturating part can be provided with a conical peripheral portion intended to be fitted with a complementary conical portion formed peripherally at the end of the inlet chamber 2.
  • the closure device of the outlet chamber consists of at least one flap 25 articulated along at least one axis of rotation and disposed in the treated air flow leaving the packaging device for so as to be opened by the treated air flow and to be in the closed position when the air flow is stopped.
  • the outlet chamber 3 is extended by a cylindrical sleeve 26 closed at the end, on which is transversely fixed a pipe 27 in which is or are mounted the articulated flap (s) ( s) and to which the sheath 4 is connected.
  • each flap 25 is mounted on the same axis of rotation in the pipe 27.
  • Each flap is constituted by a semi-disc plate and the axis of rotation of the flaps is mounted on the right edge of said flaps and is arranged in a median vertical plane to the pipe 27 of circular cross section.
  • the axis of rotation of the flaps 25 is slightly inclined relative to the vertical in the median vertical plane to the pipe 27 so that the flaps 25 are placed in the closed position by gravity as soon as the air flow is stopped and open easily under the pressure of the treated air flow.
  • the pipe 27 is inclined relative to the sleeve 26 so that the detergents and rinses and the condensation water flow by gravity to the outlet chamber 3 to then be evacuated.
  • the closure device of the outlet chamber 3 implemented during the washing phase is constituted according to another preferred embodiment by the sheath 4 itself which is connected in this case directly to the outlet chamber 3.
  • a system for recovering and evacuating washing products is provided in the cleaning means.
  • This recovery system can be constituted by a suction device by pumping or by a simple tank 22 in which the products are collected and evacuated by gravity.
  • the inlet 2 and outlet 3 chambers, the exchanger 5 and the exchanger 8 are arranged in vertical alignment, the inlet chamber being arranged in the lower part.
  • the washing products injected by the washing arms 10 of the outlet chamber 3 disposed in the upper part flow into the tubes 6 of the exchangers 5 and 8 by gravity.
  • the tubes of the exchangers being rectilinear and parallel to the alignment axis of the chambers 2 and 3 allow an easy flow of the washing products.
  • the shutter part 20 and the system for recovering the washing products are constituted by the same part being in the form of a tank 22.
  • the bottom of this tank has a product drain.
  • This plug can be closed by any known means such as a manual valve.
  • the washing head 10A is driven by the tank 22 during its translation and is supplied by hoses due to the mobility of said tank.
  • the cylindrical wall of the inlet 2 and outlet 3 chambers, the upper and lower faces of the exchangers 5 and 8, the internal surface of the tubes 6 of the said exchangers and the fan propeller are cleaned by direct jets from the means of injection 10 or by flow.
  • the support 15 of the device according to the invention formed by at least one upright resting on the ground.
  • At least one upright of said support can serve as a guide slide for the obturating part 20 of the inlet chamber 2.
  • the device can be fixed at a distance from the ground, for example to a ceiling or to a wall.
  • the motor 14 of the fan 1 is housed in the central part of the cold exchanger 5 which is provided for this purpose with a housing 14A.
  • the tubes 6 of the central part receive practically no air and the condensation water tends to flow through its tubes.
  • the position of the motor in the exchanger therefore makes it possible to hide the central part of the exchanger placed in the dead zone of action of the fan 1 by preventing the flow of condensation water.
  • a dome 15 is formed, preventing the retention of washing products and condensation water in the central part of the exchanger 5.
  • the conditioning device is also provided with a condensate recovery and evacuation assembly mounted in the outlet chamber 3.
  • This assembly consists of a channel 16 formed around the cooling exchanger 5, the outer wall of which is aligned with the wall of the outlet chamber 3.
  • the condensation water at the outlet of the cold exchanger 5 is misted and tends to be entrained towards the wall of the outlet chamber 3 due to the differences in speed of the air flow at the outlet of said exchanger 5. These condensation waters run down the wall of the outlet chamber 3 to be recovered in the channel 16.
  • the latter has an inclined bottom which ensures the evacuation of this water by a drain 17.
  • exchangers 5 and 8 In addition to the fact that the exchangers 5 and 8 by their constitution from tubes 6 makes it possible to avoid the retention of dust and facilitates cleaning, these exchangers also have a role of humidifying the air to be treated.
  • the air flow loses by condensation a part of the water vapor which it contains while passing in the tubes of the exchangers
  • This condensation water is however partly entrained in the blowing duct 4 by the air flow.
  • leaving the tubes 6 the droplets of condensed water are sprayed, which allows better reabsorption by air.
  • the packaging device according to the invention operates automatically as well as its washing.
  • a soaking phase of the air conditioning device which consists after filling by the tank 22, filling the device with a detergent, keeping this product for a certain time, evacuating it through the opening of the tank 22 then rinse the assembly by the injection means 10.
  • a set of sensors continuously monitors the thresholds of levels, flow rates, pressures, temperature and humidity by sending commands to a PLC ensuring the functions of control of the start and stop procedures, regulation and operational safety and which also starts the washing or soaking cycles, thus avoiding any human intervention.
  • all of the elements of the device are made of a material resistant to corrosion and of food grade such as stainless steel and / or polyester.
  • the device according to the invention provides indoor air conditioning with little energy consumption and offers great ease of cleaning in order to meet the criteria of cleanliness.

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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)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Duct Arrangements (AREA)
EP89450014A 1988-10-13 1989-10-10 Vorrichtung zur Klimatisierung von Innenluft Expired - Lifetime EP0364381B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89450014T ATE90442T1 (de) 1988-10-13 1989-10-10 Vorrichtung zur klimatisierung von innenluft.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8813672A FR2637966B1 (fr) 1988-10-13 1988-10-13 Dispositif de conditionnement d'air interieur
FR8813672 1988-10-13
FR898902463A FR2643444B2 (fr) 1988-10-13 1989-02-21 Dispositif de conditionnement d'air interieur
FR8902463 1989-02-21

Publications (2)

Publication Number Publication Date
EP0364381A1 true EP0364381A1 (de) 1990-04-18
EP0364381B1 EP0364381B1 (de) 1993-06-09

Family

ID=26226939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89450014A Expired - Lifetime EP0364381B1 (de) 1988-10-13 1989-10-10 Vorrichtung zur Klimatisierung von Innenluft

Country Status (4)

Country Link
EP (1) EP0364381B1 (de)
DE (1) DE68907003T2 (de)
ES (1) ES2043079T3 (de)
FR (1) FR2643444B2 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994017356A1 (en) * 1993-01-25 1994-08-04 Gm Paxton Australia Pty. Ltd. Automated decontamination system for air conditioning plant
US6228185B1 (en) 1991-09-09 2001-05-08 London & Scandinavian Metallurgical Co., Ltd. Metal matrix alloys
FR2833338A1 (fr) 2001-12-10 2003-06-13 Air Quality Process Unite de diffusion d'air sous faible vitesse, selon une temperature differente de celle de l'ambiance dans laquelle il est diffuse, en vue de la production d'une strate d'air
WO2005037585A1 (en) * 2003-10-20 2005-04-28 Mikael Nutsos Air conditioner cleaning apparatus and method
CN100365349C (zh) * 2006-01-25 2008-01-30 西安交通大学 利用小型风机加热的通风***风门防结冰加热装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020127770A1 (de) 2020-10-21 2022-04-21 KLAISS Kälte - Klima GmbH & Co. KG Kühlvorrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2022133A (en) * 1932-04-09 1935-11-26 American Blower Corp Air conditioning system
FR2534363A1 (fr) * 1982-10-08 1984-04-13 Textima Veb K Echangeurs de chaleur a recuperation
DE3635776A1 (de) * 1986-10-21 1988-04-28 Schmitz Kuehler Baierbrunn Verdampfer mit nassreinigungseinheit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2022133A (en) * 1932-04-09 1935-11-26 American Blower Corp Air conditioning system
FR2534363A1 (fr) * 1982-10-08 1984-04-13 Textima Veb K Echangeurs de chaleur a recuperation
DE3635776A1 (de) * 1986-10-21 1988-04-28 Schmitz Kuehler Baierbrunn Verdampfer mit nassreinigungseinheit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6228185B1 (en) 1991-09-09 2001-05-08 London & Scandinavian Metallurgical Co., Ltd. Metal matrix alloys
WO1994017356A1 (en) * 1993-01-25 1994-08-04 Gm Paxton Australia Pty. Ltd. Automated decontamination system for air conditioning plant
FR2833338A1 (fr) 2001-12-10 2003-06-13 Air Quality Process Unite de diffusion d'air sous faible vitesse, selon une temperature differente de celle de l'ambiance dans laquelle il est diffuse, en vue de la production d'une strate d'air
WO2005037585A1 (en) * 2003-10-20 2005-04-28 Mikael Nutsos Air conditioner cleaning apparatus and method
CN100365349C (zh) * 2006-01-25 2008-01-30 西安交通大学 利用小型风机加热的通风***风门防结冰加热装置

Also Published As

Publication number Publication date
ES2043079T3 (es) 1993-12-16
FR2643444A2 (fr) 1990-08-24
DE68907003D1 (de) 1993-07-15
FR2643444B2 (fr) 1991-07-05
EP0364381B1 (de) 1993-06-09
DE68907003T2 (de) 1994-01-20

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