EP2977696A1 - System und verfahren zur steuerung der flüssigkondensate eines wärmetauschers - Google Patents

System und verfahren zur steuerung der flüssigkondensate eines wärmetauschers Download PDF

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Publication number
EP2977696A1
EP2977696A1 EP15178367.7A EP15178367A EP2977696A1 EP 2977696 A1 EP2977696 A1 EP 2977696A1 EP 15178367 A EP15178367 A EP 15178367A EP 2977696 A1 EP2977696 A1 EP 2977696A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
condensates
heating element
tank
channel
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
EP15178367.7A
Other languages
English (en)
French (fr)
Other versions
EP2977696B1 (de
Inventor
Hector BRAVO
Jean-Francis Clement
Erwan FONTBONNE
Luc SAÏSSET
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.)
Societe Industrielle de Chauffage SIC SAS
Original Assignee
Societe Industrielle de Chauffage SIC SAS
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 Societe Industrielle de Chauffage SIC SAS filed Critical Societe Industrielle de Chauffage SIC SAS
Priority to PL15178367T priority Critical patent/PL2977696T3/pl
Publication of EP2977696A1 publication Critical patent/EP2977696A1/de
Application granted granted Critical
Publication of EP2977696B1 publication Critical patent/EP2977696B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/36—Drip trays for outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F17/00—Removing ice or water from heat-exchange apparatus
    • F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
    • 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
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/141—Removal by evaporation
    • F25D2321/1413—Removal by evaporation using heat from electric elements or using an electric field for enhancing removal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/144—Collecting condense or defrost water; Removing condense or defrost water characterised by the construction of drip water collection pans
    • F25D2321/1441—Collecting condense or defrost water; Removing condense or defrost water characterised by the construction of drip water collection pans inside a refrigerator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer

Definitions

  • the invention relates to a system and a method for managing the recovery and liquid evacuation of condensates from a heat exchanger such as an evaporator.
  • said at least one heating element By controlling the operation of said at least one heating element, on the one hand, to the operation of the thermostat and, on the other hand, to the defrosting of the heat exchanger, it is ensured that the heating of the liquid condensates will take place only when certain predetermined conditions will be met, namely when the condensate generation is likely to occur (defrosting operation in progress or to come) and when these may freeze in the tank (the thermostat detects a temperature close to freezing conditions ).
  • the heating operation is then controlled and limited in time (the heating element does not heat up permanently), which generates energy savings.
  • the system therefore makes it possible to minimize the power consumption necessary for heating all or part of the tank in a particularly simple manner. Note that the dual condition is necessary to ensure the consistent operation of said at least one heating element in all circumstances.
  • a simple de-icing condition is not sufficient because it could lead to unwanted activation of said at least one heating element when the heat exchange unit is used to produce cold (air conditioning).
  • the The operation of the heat exchange unit in cooling or cooling mode is, from the point of view of the refrigerating cycle, perfectly identical to its operation during a defrosting situation. Therefore, in this situation where the exchanger is used to cool (so during a hot period) it is the thermostat on the outside temperature that prevents the operation of said at least one heating element.
  • the annual energy consumption of the at least one heating element is negligible since it operates less than 1% of the time of the heating season.
  • the liquid condensates are simply discharged, naturally, through said at least one discharge opening of the tank without having to provide any energy.
  • Said at least one heating element is distinct from the heating means of the conventional automatic defrosting system which ensure the defrosting of the exchanger, the system according to the invention therefore does not interfere with the automatic defrosting of the exchanger.
  • the system according to the invention cooperates or interfaces with the automatic defrost only through the information received or obtained indirectly and which informs said at least one heating element of a current or future defrosting.
  • the operation of the system according to the invention therefore does not modify or interfere with the operation of the automatic defrosting system of the exchanger. It can therefore easily be added to an existing refrigeration plant or circuit.
  • the heating element only interfaces with the tank and in particular the part or areas to be heated.
  • the heating of the tank therefore intervenes only when the dual condition set out above is met: information representative of the defrosting of the heat exchanger is generated and supplied to one or more heating elements which are intended to heat the single tank and the medium temperature is close to condensate freezing conditions (temperature equal to or lower than a predetermined threshold).
  • information representative of the defrosting of the heat exchanger is generated and supplied to one or more heating elements which are intended to heat the single tank and the medium temperature is close to condensate freezing conditions (temperature equal to or lower than a predetermined threshold).
  • a building such as a dwelling comprises several rooms or premises of which only two, referenced 12, 14, are shown in plan view, separated by an internal partition 11 connected to an outer wall 13.
  • a building heating system 20 is installed in the building 10. This system is based on the principle of the heat pump and is for example of the type with separate heat exchange units (also known as split technology). in Anglo-Saxon terminology).
  • the system 20 comprises a first heat exchange unit 22 which is installed in the unheated room 12 and which comprises a compressor, an evaporator, and an expansion member (not shown in the figure).
  • This first unit 22 is for example enclosed inside a box 24.
  • the system 20 also includes a second heat exchange unit 26 installed in the room 14 which is heated.
  • the second unit 26 comprises for example a condenser (not shown) and a regulation equipment with organs dedicated to the control of the heating system and to the management of climatic comfort of the habitat.
  • the condenser will allow, for example, to heat water flowing in pipes connected to the pipes of a heated floor.
  • one or more other "second" heat exchange units 26 may be installed in other premises or parts of the building (technology "multi-split" in English terminology).
  • the first heat exchange unit 22 is connected to the second unit 26 by unrepresented refrigerating links conveying the heat transfer fluid to change state which is used in the refrigerant circuit.
  • a tank 42 for recovering the liquid condensates generated by the heat exchanger 32 is disposed below the heat exchange unit 22 housed in its chamber 23.
  • the outline of the tank 42 is schematically illustrated in dashed lines on the figure 2 .
  • the unit 22 is for example implanted on the tray 42 as described later.
  • the tray 42 takes for example the form of a plate illustrated in perspective on the figure 3 .
  • a channel 44 is hollowed into the thickness of the plate and extends longitudinally in a form substantially corresponding to the general shape of the exchanger 32 projected on the plate (in top view).
  • This channel 44 is inclined (in the longitudinal direction of extension of the channel) so as to direct gravitarily liquid condensates collected by the channel to a through opening 46 of condensate discharge which is practiced in the bottom of the channel. at one end of it (see the vertical axial section of the figure 4 ; in this figure only the main elements of the system have been represented, the other elements have not been represented for the sake of clarity).
  • a discharge tube 48 may be inserted into the through opening 46 to guide the flow of the condensates downward below the plate 42.
  • the plate 42 has an upper face 42a which is also sloped towards the channel 44 (in a direction transverse to the longitudinal direction of extension of the channel) to facilitate the flow of condensate (see the vertical cross section of the figure 5 ).
  • the channel 44 thus forms a recess in the thickness of the plate 42 and which has at the bottom a central groove 50. This groove 50 is hollowed in the bottom of the channel 44 so as to constitute the lowest point thereof. .
  • the channel 44 is delimited by two lateral faces 44a, 44b which extend from the upper face 42a inclined towards the bottom. As shown on the figure 5 the two faces 44a, 44b are inclined, each forming a double slope, namely a first slope formed by a first inclined section P1 and a second slope softer than the first, formed by a second inclined section P2, to join the groove central 50. Alternatively, the two lateral faces 44a, 44b join the central groove 50 forming a rounded (without breaking angle between two consecutive inclined faces).
  • the channel 44 comprises a first portion 44c corresponding to the longest of the two branches of the L which extends from the opening 46 located at a first edge 42b of the plate to the end of the second branch 44d (second part of channel) of L.
  • the second channel portion 44d or second branch forms a bend from the end of the first portion 44c and extends to a second edge 42c of the plate adjacent to the first edge 42b.
  • a heating element 60 is disposed inside the central groove 50 of the trough ( Fig. 5 ) and extends along almost the entire length of the channel.
  • This elongated heating element 60 is for example a heating wire.
  • a strip of heat sink material 70 such as a metal strip, for example aluminum, is placed at the bottom of the channel, over the groove 50 housing the heating element 60 (on the figures 3 and 4 the band 70 is not shown for the sake of clarity), over all or part of the width of the channel.
  • This band 70 which is highly conductive thermal quickly dissipates the heat produced by the heating element it covers when it is activated and generates heat.
  • heating element 60 at the bottom of the groove 50 which is arranged at a lower dimension than that of the bottom of the channel and covering the upper opening of the groove by the band 70 ensures that liquid condensates will not stagnate around the heating element. This would be the case if the heating element was directly arranged on the flat or inclined bottom of the channel, in its most concave part.
  • the heating wire dissipates 50 W / m and the strip has a width of 50 mm and a thickness of less than 2 mm and, preferably, less than 1 mm, and for example equal to 0.3 mm. .
  • the thickness is chosen as low as possible in order to minimize the thermal capacity of the strip.
  • the plate 42 for its part, is made of a material with low thermal conductivity, which makes it possible to promote the evacuation of the heat generated by the heating element on the side of the dissipative band 70.
  • the material constituting the plate is, for example, polystyrene, more particularly of the film-coated type, or even another sealed cellular plastic material, with low thermal effusivity (less than 100 Jm -2 .K -1 .s -1/2 ) and adapted to this use.
  • the metal strip is made of a material having a coefficient of thermal conductivity greater than or equal to 10 W / m ° C., while the material of the plate has a coefficient of thermal conductivity of less than 0.1. W / m. ° C.
  • the width along which the strip of heat sink material 70 extends may vary depending on its thickness.
  • the objective being to minimize the thermal capacity of the band and therefore its volume, a very thin band ( ⁇ 0.5 mm) can easily cover the whole width of the channel (greater than 100 mm wide) without having too much impacts on energy consumption.
  • the enclosure 23 enclosing the heat exchange unit 22 comprises a base 23a which is pierced with a plurality of through orifices 80 disposed vertically above the first channel portion 44c and under the exchanger 32.
  • the base 23a may have only one orifice in line with the channel or a small number of orifices relative to that illustrated in the figures.
  • two indentations 42d, 42e parallel to each other and perpendicularly crossing the portion 44c of the trough, are arranged in the thickness of the plate 42.
  • the figure 6 illustrates a perspective view of the plate 42 on the edge side 42c.
  • Two rails 52, 54 extend inside the two respective indentations 42d and 42e and each have two free ends curved so as to engage the respective opposite recesses of each imprint.
  • a damping member for example of anti-vibratile studs (also known by the name of "silent block” in English terminology) is arranged and the corresponding curved free end of the rail is mounted on this member.
  • two members 56, 58 are respectively represented at the bottom of the cavities 42d2 and 42e2 and the curved ends 52a and 54a of the rails 52 and 54 are respectively fixed on the corresponding members.
  • the figure 7 illustrates the enclosure 23 of the unit 22 positioned on the rails 52 and 54 by means of mounting feet of which only two, 62 and 64, are shown.
  • the enclosure of the figure 7 is in the position of implantation of the enclosure of the figure 4 .
  • the enclosure was put in place by sliding the feet to the upper part of the rails, along them to the stop position in abutment.
  • the rails are intended to serve as guide elements for the supply of the heat exchange unit 22 in its implantation position above the plate.
  • the enclosure 23 rests on the rails 52, 54 which are mounted in a damping manner on a metal base 66 ( figure 6 ) on which is disposed the plate 42. This greatly limits the transmission of vibrations from the enclosure 23 to the base 66 (reduction of the noise level).
  • an overflow device 82 ( figure 3 ) is arranged on the plate 42 and communicates with the channel 44 to be able to evacuate an excess of liquid condensates from the channel (in the case where the opening 46 is no longer sufficient for evacuation).
  • Such a device comprises a channel 84 which extends transversely to the channel from the zone of the channel which is close to the opening 46 and towards an edge of the plate, for example, the edge 42c. The channel is dug from the upper face 42a of the plate.
  • the figure 1 illustrates the principle of a system according to one embodiment of the invention for managing the recovery and evacuation of condensates from an exchanger such as the evaporator 32.
  • the system comprises the heating wire 60 which has an electrical resistance R and forms an electrical circuit (connected to a phase and neutral) open in two parts of the circuit: a first place where is located a thermostat 90 inside the box 24 (in the room 12) and a second location where is located a contactor 92 in the second heat exchange unit 26 (in the room 14). Note that the thermostat 90 is located in the portion 44d of the channel, adjacent the edge 42c of the plate.
  • the heating wire forms a loop inside the housing 60 of the heating element at the thermostat 90.
  • the heating wire is electrically powered by the same source of energy as that used for unit 22.
  • the thermostat 90 and the switch 92 are connected in series in the circuit so that the electric current can flow through the electrical resistance of the heating wire only if both of these elements are closed.
  • the contactor 92 is connected to an electronic card 94 which controls the control portion of the heat pump system.
  • the electronic card 94 relays the defrosting information, which defrosting is performed in known and automatic manner by reversing the cycle of the evaporator 32 of the first unit 22.
  • a defrosting operation begins with the switching of a valve (ex; 4-way valve) which reverses the cycle and ends with the inverse switching of this valve.
  • the thermostat 90 measures the temperature of the medium air in which the tank 42 is located (in particular where the air is in contact with the tank) and compares it with a set value which is adjusted. so that the thermostat switch closes when the measured air temperature is low enough to risk condensate freezing in the tank.
  • the set temperature is chosen to be close to the solidification temperature of the condensates. Such a set temperature is for example less than 5 ° C.
  • the electrical circuit of the figure 1 is closed. This allows the establishment of an electric current in the heating wire 60 and thus the generation of heat in the central groove 50 and in the bottom of the channel through the dissipating band 70.
  • the heating of a part of the The tank therefore takes place during at least part of the defrosting operation.
  • the relevant part of the tank is hot when the condensate reaches this part, which prevents the freezing of the latter.
  • the heating element can be activated when the defrost cycle begins or soon after and be deactivated at the end of the cycle, or extended after the cycle.
  • the condensates which fall into liquid form in the channel (following the defrosting of the exchanger) and are in contact with the strip 70 dissipating the heat released by the heating element 60 are thus maintained at a temperature sufficient to eliminate any risk of freezing condensates.
  • the temperature must be sufficient so that the condensates remain in liquid form and can thus be removed by drainage (economically) but it must not be too high so as not to consume energy unnecessarily.
  • the liquid condensates collected in the channel are evacuated gravity by flowing along it to the opening 46 passing through the plate 42.
  • the operation of the heating element is slaved, on the one hand, to the automatic defrosting of the exchanger 32 and, on the other hand, to the temperature of the air surrounding the heating element.
  • the coupling of the automatic defrosting system with the operation of the heating element also makes it possible to minimize the energy consumption of the system. Indeed, the automatic defrost prevents a layer of frost too large accumulates on the heat exchanger which therefore operates more economically, less condensate is generated during defrosting and the operating time of the heating element is thus reduced.
  • the heated zone has a relatively small area compared to the entire surface of the plate 42.
  • This localized heating (due in particular to the use of a heating wire) also contributes to reducing the consumption of electrical energy. compared to a situation where almost all of the area of the plate 42 condensate recovery would be heated.
  • system according to this embodiment of the invention is particularly simple design since, outside, conventional electronics necessary for defrosting the exchanger, no other electronics are necessary and only a thermostat is used . No signal processing from different sensors is necessary to implement the system according to the invention.
  • the transverse profile of the channel, its width, its longitudinal extension shape, the shape of the central groove may vary depending on the needs and application, particularly depending on the layout and shape of the exchangers from which it is appropriate to recover and evacuate the liquid condensates.
  • the number of channels that are able to be heated can also vary and, for example, the number of heating elements (one per channel).
  • the system may comprise more than one through opening 46 according to the needs and / or the configuration of the exchanger (s) and the tray.
  • some elements of the aforementioned circuit may be arranged elsewhere than in the second heat exchange unit 26 or in the vicinity of the latter and, for example, in the first heat exchange unit 22 or near the latter.
  • the contactor 92 is disposed in the heat exchange unit 22 and not in the heat exchange unit 26.
  • the heat exchange unit 22 also comprises a unit or electronic card which has defrosting information and which is connected to the contactor to function as in the diagram of the figure 1 and close the circuit at the switch in case of defrosting.
  • This variant facilitates the installation operations of the system since the defrosting information is used where it is generated (at the level of the heat exchange unit 22).
  • the invention is applicable to any cooling system, air conditioning or heating comprising, on the one hand, a heat exchanger which is able to undergo defrosting operations on command of an automatic defrosting system (remote or part of the heat exchange unit including the exchanger) and to generate liquid condensates and, on the other hand, a device or condensate recovery tank which is associated with at least one heating element which is adapted to heat at least a portion of the device or tray.
  • the invention may especially apply to a cooling system, air conditioning or heating of the type with separate heat exchange units.
  • the invention may alternatively be applied to a cooling system, air conditioning or heating monoblock type, that is to say, all components of the refrigerant circuit are contained in the same cabinet, box or cabinet.
  • the figure 8 schematically illustrates a system according to another embodiment of the invention for managing the recovery and evacuation of condensates from an exchanger such as the evaporator 32.
  • the heating system 200 of the building 10 comprises the elements of the figure 1 , namely the units 22 and 26 connected to a refrigerating circuit 210 which was not shown on the figure 1 .
  • the system 200 also comprises the heating element 220 (eg heating wire) which is for example identical to the heating wire 60 of the figure 1 except the absence of the contactor 92 connected to the card 94 of the figure 1 and the presence of an additional contact or switch 222.
  • thermostat 222 is installed on the refrigerant circuit 210 which includes the heat exchanger 22 in addition to the ambient air thermostat 90.
  • the thermostat 222 comprises a contactor that is present in the electrical circuit 220 and the two thermostats are connected in series in the electrical circuit so that the electric current can flow in the electrical resistance of the heating wire only if both of these elements are closed.
  • no defrosting information is provided (for example sent by the card 94 of the figure 1 ) when defrosting the evaporator is about to occur (or in progress).
  • the information representative of the defrosting of the exchanger is indirectly obtained by the additional thermostat 222 placed in the refrigerant circuit (this thermostat provides a temperature information of the circuit).
  • This additional thermostat detects a sudden change in temperature in the circuit when the defrosting of the exchanger occurs (well-known phenomenon) and closes the corresponding contact in the electric circuit when the temperature reaches a setpoint (same principle of operation as for the thermostat 90).
  • the thermostat 90 detects a temperature close to the freezing conditions, the corresponding contact closes in the circuit.
EP15178367.7A 2014-07-25 2015-07-24 System und verfahren zur steuerung der flüssigkondensate eines wärmetauschers Active EP2977696B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15178367T PL2977696T3 (pl) 2014-07-25 2015-07-24 System i sposób zarządzania ciekłymi kondensatami z wymiennika ciepła

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1457227A FR3024222A1 (fr) 2014-07-25 2014-07-25 Systeme de gestion des condensats liquides d'un echangeur thermique

Publications (2)

Publication Number Publication Date
EP2977696A1 true EP2977696A1 (de) 2016-01-27
EP2977696B1 EP2977696B1 (de) 2016-11-23

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EP15178367.7A Active EP2977696B1 (de) 2014-07-25 2015-07-24 System und verfahren zur steuerung der flüssigkondensate eines wärmetauschers

Country Status (4)

Country Link
EP (1) EP2977696B1 (de)
ES (1) ES2614261T3 (de)
FR (1) FR3024222A1 (de)
PL (1) PL2977696T3 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06281201A (ja) * 1993-03-26 1994-10-07 Sharp Corp 空気調和機
EP1403589A1 (de) * 2002-09-30 2004-03-31 BSH Bosch und Siemens Hausgeräte GmbH Klimagerät
WO2011030678A1 (ja) * 2009-09-09 2011-03-17 三菱重工業株式会社 空気調和機のデフロストヒータ制御方法
EP2333440A1 (de) * 2008-08-25 2011-06-15 Sharp Kabushiki Kaisha Klimaanlage
WO2013088713A1 (ja) * 2011-12-12 2013-06-20 ダイキン工業株式会社 ヒータ及びそれを備えた冷凍装置の室外ユニット

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06281201A (ja) * 1993-03-26 1994-10-07 Sharp Corp 空気調和機
EP1403589A1 (de) * 2002-09-30 2004-03-31 BSH Bosch und Siemens Hausgeräte GmbH Klimagerät
EP2333440A1 (de) * 2008-08-25 2011-06-15 Sharp Kabushiki Kaisha Klimaanlage
WO2011030678A1 (ja) * 2009-09-09 2011-03-17 三菱重工業株式会社 空気調和機のデフロストヒータ制御方法
WO2013088713A1 (ja) * 2011-12-12 2013-06-20 ダイキン工業株式会社 ヒータ及びそれを備えた冷凍装置の室外ユニット
EP2792955A1 (de) * 2011-12-12 2014-10-22 Daikin Industries, Ltd. Heizelement und ausseneinheit für eine kühleinheit mit dem heizelement

Also Published As

Publication number Publication date
ES2614261T3 (es) 2017-05-30
EP2977696B1 (de) 2016-11-23
PL2977696T3 (pl) 2017-06-30
FR3024222A1 (fr) 2016-01-29

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