EP1403589A1 - Air-conditioning device - Google Patents

Air-conditioning device Download PDF

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Publication number
EP1403589A1
EP1403589A1 EP03021479A EP03021479A EP1403589A1 EP 1403589 A1 EP1403589 A1 EP 1403589A1 EP 03021479 A EP03021479 A EP 03021479A EP 03021479 A EP03021479 A EP 03021479A EP 1403589 A1 EP1403589 A1 EP 1403589A1
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EP
European Patent Office
Prior art keywords
air conditioner
conditioner according
heating element
air
module
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
EP03021479A
Other languages
German (de)
French (fr)
Other versions
EP1403589B1 (en
Inventor
Alberto Ruiz De Larramendi
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP1403589A1 publication Critical patent/EP1403589A1/en
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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
    • F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
    • 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
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
    • 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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays

Definitions

  • the present invention relates to an air conditioner with an interior module provided in the room to be air-conditioned with a first heat exchanger and an outdoor module functionally connected to the indoor module via connecting lines, such as electrical lines, a refrigerant line or the like, which is provided outside the room to be air-conditioned in the outside atmosphere is.
  • the outdoor module has a blower with blower blades for generating an air flow directed towards a second heat exchanger and a bottom provided below the blower for collecting dripping condensate water, in which an outlet opening is provided through which the collected condensed water can flow off the bottom.
  • a generic air conditioner is known from EP 1660517.
  • the air conditioner has an indoor module in a room to be air-conditioned and an outdoor module provided in the outside atmosphere.
  • a condenser is provided in the outdoor module, which is cooled with condensation water to increase the output.
  • the condensation water dripping from the condenser collects in a collecting container, which can be emptied via a closable outlet opening.
  • the object of the present invention is to provide an air conditioner that works reliably regardless of the climatic conditions in the outside atmosphere.
  • a heating element is provided on the bottom of the outer module, which prevents ice formation of the condensed water collected on the bottom by heating the bottom to a temperature above the water freezing temperature. This eliminates the risk of ice forming below the fan blades if the outside temperature is low. This prevents contact between the fan blades and ice formed on the ground - which affects the operation of the air conditioner.
  • the heating element can be designed as an electrical resistance heater in a particularly simple and inexpensive manner. So that the functionality of the resistance heating is not impaired, the resistance heating can be arranged on an underside of the outdoor module base.
  • the heating element is assigned a sensor which switches on the heating element if there is a risk of ice forming on the floor.
  • the heating element is therefore switched on in an energy-saving manner only when there is a risk of ice formation.
  • the senor can be designed as an outside temperature sensor which switches on the heating element at an outside temperature in the range of the water freezing temperature.
  • the bottom of the outside module located in the outside atmosphere is formed with a separating agent which divides the bottom into two bottom sections.
  • a first bottom section directs the draining off condensate to an outlet opening of the outdoor module.
  • the second bottom section is located below the fan blades.
  • the release agent prevents condensation from accumulating in the second bottom section below the fan blades.
  • the heating element is also assigned to the second floor section. Should water nevertheless collect in the second floor section, ice formation in the second floor section is prevented by the heating element.
  • the separating means is designed as a dividing wall which separates the first bottom section from the second bottom section. This reliably prevents the condensed water from collecting below the fan blades.
  • the separating means can be designed as an elevation which protrudes from the first bottom section. An upper side of the elevation forms the second bottom section below the fan blades.
  • the second base section is also connected to the outlet opening. If necessary, condensate dripping onto the second floor section can thus be discharged via the outlet opening.
  • the outflow of the condensed water from the first or from the second bottom section by means of gravity can be improved by the bottom sections falling at an angle, in particular 2 °, towards the outlet opening.
  • the overall height of the fan in the outdoor module can be significantly reduced.
  • An outer circumferential line of the fan blades of the fan can approach the ground up to 2 to 3 mm.
  • the outdoor module can be made compact with a low overall height.
  • the air conditioning device according to the invention can work both in a room cooling device and in a room heating operation.
  • the second heat exchanger provided in the outdoor module works as a condenser.
  • the outlet opening in the outdoor module is closed by means of a closure element.
  • Condensed water is led from the indoor module to the outdoor module via a connecting line.
  • the condensed water is distributed to the second heat exchanger in order to increase its condensing capacity.
  • the dripping condensate is collected on the floor. Due to the low overall height of the blower, the condensed water collected on the bottom is absorbed by the blower blades and spun onto the second heat exchanger again.
  • the second heat exchanger in the outdoor module works as an evaporator on which water condenses.
  • the outlet opening in the outdoor module is open. This allows condensed water to drip from the second heat exchanger onto the first base section and flow out through the outlet opening. This prevents the risk of ice forming in the outdoor module at low outside temperatures.
  • FIG. 1 shows an air conditioner with an indoor module 3 and an outdoor module 9.
  • the indoor module 3 of the air conditioner is located in a room 1 to be air-conditioned.
  • the outdoor module 9 is provided in the outside atmosphere 11.
  • the two modules 3 and 9 are connected to one another via a wiring harness 7.
  • the wiring harness 7 runs, for example, via an open window to the outer module 9.
  • the outer module 9 can be arranged on an outer wall in the region of the window.
  • electrical lines, a refrigerant line or a condensate line 8 shown in FIG. 2 are bundled in the line strand 7.
  • the indoor module has a first heat exchanger 5 and the outdoor module 9 has a second heat exchanger 17.
  • the second heat exchanger 17 is shown in detail in FIG. 2.
  • the second heat exchanger 17 is U-shaped.
  • a blower 13 with blower blades 15 is arranged between the two legs of the U-shaped heat exchanger 17.
  • the fan 13 is mounted on a bracket 18.
  • a lower end of the bracket 18 is inserted in the bottom 19.
  • An upper end of the bracket 18 is mounted on the outdoor module housing, not shown.
  • the heat exchanger 17 is seated with a U-shaped end face on the bottom 19 of the outer module 9.
  • the bottom 19, as shown in FIG 32 is in connection with the outside atmosphere 11.
  • a closure element 33 closes the outlet opening 32 in a closed manner.
  • FIG. 2 also shows that a partition 29 is formed on the bottom 19.
  • the partition wall 29 divides the floor 19 into a first floor section 23 and a second floor section 25.
  • the second floor section 25 is delimited on the one hand by the partition wall 29 and by the drainage channel 31 according to FIG. From FIG. 4 it can be seen that an outer circumferential line 27 of the fan blades 15 is approximated to the second base section 25 to a slight distance a of approximately 3 mm.
  • a heating element 35 is formed as a resistance heater.
  • the resistance heater 35 is connected to a control device 36.
  • the control device 36 has an outside temperature sensor 38, which is provided on a front side of the module base 19.
  • a space cooling operation of the air conditioning device 1 is described below:
  • the second heat exchanger 17 in the outdoor module 9 works as a condenser.
  • the first heat exchanger 5 in the indoor module 3 works as an evaporator, on which condensed water from the room air condenses.
  • the condensed water collects in the indoor module 3.
  • the condensed water in the condensate line 8 shown in FIG. 2 is fed into the outdoor module 9 by means of a pump, not shown.
  • the condensate line 8 opens into the outer module 9 in the area above the fan blades 15. The condensate water therefore drips onto the fan blades 15 in the space cooling mode, which they fling in the direction of the U-shaped heat exchanger 17.
  • the condensed water is distributed over the heat exchanger 17.
  • a condensing capacity of the second heat exchanger 17 is increased.
  • the outlet opening 32 is closed by the closure element 33 in the room cooling operation of the air conditioning device. Dripping water therefore collects on the floor 19.
  • the water level of the condensed water collected on the bottom 19 can thereby rise during the room cooling operation.
  • the water collected on the bottom 19 is taken up by means of the fan blades 15 and hurled again against the second heat exchanger 17.
  • the condensate dripping from the condensate water line 17 is consequently, on the one hand, directly captured by the fan blades 15 and distributed via the heat exchanger 17.
  • the fan blades 15 can also pick up condensed water directly from the bottom 19 and distribute it via the heat exchanger 17.
  • the first heat exchanger 5 in the indoor module 3 works as a condenser to heat the room 1.
  • the second heat exchanger 17 in the outdoor module 9 works as an evaporator. In this case condenses water from the outside atmosphere on the second heat exchanger 17.
  • the condensation water 21 drips from the second heat exchanger 17 in the direction of the arrow to the second bottom section 23.
  • the second bottom section 23 directs the collected condensed water 21 to the drainage channel 31. This is not closed by the closure element 33 in the space heating mode.
  • the condensed water 21 therefore flows out of the outdoor module 9 via the drain channel 31.
  • the outside temperature sensor 38 of the control device 36 detects an outside temperature in the region of the water freezing point, the control device 36 switches on the heating element 35.
  • the bottom 19 thereby heats up to a temperature above the water freezing temperature. As a result, the risk is eliminated that ice can form underneath the fan blades at correspondingly low outside temperatures. This prevents contact between the fan blades and ice formed on the ground.
  • the first bottom section 25 below the fan blades 15 is inaccessible to the water flowing off in the second bottom section 23.
  • condensation water 21 dripping from the heat exchanger 17 will reach the first floor section 25.
  • a division of the floor 19 into a first and second floor section by the partition wall 29 can be dispensed with.
  • 19 water accumulates on the entire floor. Due to the heating element 35, however, the collected water is prevented from freezing to ice, which can come into contact with the fan blades 15.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Abstract

The air-conditioning device has an internal module with a first heat exchanger located within the air-conditioned room and coupled via electrical and refrigeration medium lines with an external module on the outside of the air-conditioned room, provided with a fan for directing an air flow across a second heat exchanger. The external module has a base (19) below the fan blades (15) for collection of condensate water, provided with a drainage opening and a heating element (35) operated by an associated control (36) coupled to an external temperature sensor (38), for heating the base to prevent freezing of the condensate water.

Description

Die vorliegende Erfindung betrifft ein Klimagerät mit einem im zu klimatisierenden Raum vorgesehenen Innenmodul mit einem ersten Wärmetauscher und einem über Verbindungsleitungen, wie etwa elektrische Leitungen, eine Kältemittelleitung oder dergleichen, funktional mit dem Innenmodul verbundenen Außenmodul, das außerhalb des zu klimatisierenden Raumes in der Außenatmosphäre vorgesehen ist. Das Außenmodul weist ein Gebläse mit Gebläseschaufeln zum Erzeugen einer auf einen zweiten Wärmetauscher gerichteten Luftströmung und einen unterhalb des Gebläses vorgesehenen Boden zum Sammeln von abtropfendem Kondenswasser auf, in welchem eine Auslassöffnung vorgesehen ist, durch die das gesammelte Kondenswasser vom Boden abfließen kann.The present invention relates to an air conditioner with an interior module provided in the room to be air-conditioned with a first heat exchanger and an outdoor module functionally connected to the indoor module via connecting lines, such as electrical lines, a refrigerant line or the like, which is provided outside the room to be air-conditioned in the outside atmosphere is. The outdoor module has a blower with blower blades for generating an air flow directed towards a second heat exchanger and a bottom provided below the blower for collecting dripping condensate water, in which an outlet opening is provided through which the collected condensed water can flow off the bottom.

Aus der EP 1660517 ist ein gattungsgemäßes Klimagerät bekannt. Das Klimagerät weist ein in einem zu klimatisierenden Raum Innenmodul sowie ein an der Außenatmosphäre vorgesehenes Außenmodul auf. Im Außenmodul ist Kondensator vorgesehen, der mit Kondensationswasser gekühlt wird, um die Leistung zu erhöhen. Das vom Kondensator tropfende Kondensationswasser sammelt sich in einem Sammelbehälter, der über eine verschließbare Ausgangsöffnung entleert werden kann.A generic air conditioner is known from EP 1660517. The air conditioner has an indoor module in a room to be air-conditioned and an outdoor module provided in the outside atmosphere. A condenser is provided in the outdoor module, which is cooled with condensation water to increase the output. The condensation water dripping from the condenser collects in a collecting container, which can be emptied via a closable outlet opening.

Die Aufgabe der vorliegenden Erfindung besteht darin, ein Klimagerät bereitzustellen, das unabhängig von den klimatischen Verhältnissen in der Außenatmosphäre zuverlässig arbeitet.The object of the present invention is to provide an air conditioner that works reliably regardless of the climatic conditions in the outside atmosphere.

Die Aufgabe der vorliegenden Erfindung ist durch das Klimagerät mit den Merkmalen des Patentanspruches 1 gelöst. Gemäß dem kennzeichnenden Teil des Patentanspruches 1 ist am Boden des Außenmoduls ein Heizelement vorgesehen, das eine Eisbildung des auf dem Boden gesammelten Kondenswassers durch ein Erwärmen des Bodens auf eine über der Wasser-Gefriertemperatur liegende Temperatur verhindert. Dadurch ist die Gefahr beseitigt, dass bei entsprechenden niedrigen Außentemperaturen sich Eis unterhalb der Gebläseschaufeln bilden kann. Ein Kontakt zwischen Gebläseschaufeln und auf dem Boden gebildetem Eis - wodurch der Betrieb des Klimageräts beeinträchtigt wird - ist somit verhindert.The object of the present invention is achieved by the air conditioner with the features of claim 1. According to the characterizing part of patent claim 1, a heating element is provided on the bottom of the outer module, which prevents ice formation of the condensed water collected on the bottom by heating the bottom to a temperature above the water freezing temperature. This eliminates the risk of ice forming below the fan blades if the outside temperature is low. This prevents contact between the fan blades and ice formed on the ground - which affects the operation of the air conditioner.

In einer besonders fertigungstechnisch einfachen und günstigen Weise kann das Heizelement als elektrische Widerstandsheizung ausgebildet sein. Damit die Funktionsfähigkeit der Widerstandsheizung nicht beeinträchtigt wird, kann die Widerstandsheizung auf einer Unterseite des Außenmodul-Bodens angeordnet sein.The heating element can be designed as an electrical resistance heater in a particularly simple and inexpensive manner. So that the functionality of the resistance heating is not impaired, the resistance heating can be arranged on an underside of the outdoor module base.

Von Vorteil ist es, wenn dem Heizelement ein Sensor zugeordnet ist, der bei Gefahr einer Eisbildung am Boden das Heizelement einschaltet. Das Heizelement ist daher in energiesparender Weise nur bei Gefahr von Eisbildung eingeschaltet.It is advantageous if the heating element is assigned a sensor which switches on the heating element if there is a risk of ice forming on the floor. The heating element is therefore switched on in an energy-saving manner only when there is a risk of ice formation.

In fertigungstechnisch einfacher Weise kann der Sensor als Außentemperatursensor ausgebildet sein, der bei einer Außentemperatur im Bereich der Wasser-Gefriertemperatur das Heizelement einschaltet.In a production-technically simple manner, the sensor can be designed as an outside temperature sensor which switches on the heating element at an outside temperature in the range of the water freezing temperature.

Zudem kann es von Vorteil sein, wenn der Boden des in der Außenatmosphäre befindlichen Außenmoduls mit einem Trennmittel ausgebildet ist, das den Boden in zwei Bodenabschnitte unterteilt. Ein erster Bodenabschnitt leitet das abfließende Kondenswasser zu einer Auslassöffnung des Außenmoduls. Der zweite Bodenabschnitt befindet sich unterhalb der Gebläseschaufeln. Das Trennmittel verhindert eine Ansammlung von Kondenswasser im zweiten Bodenabschnitt unterhalb der Gebläseschaufeln. Dem zweiten Bodenabschnitt ist zudem das Heizelement zugeordnet. Sollte sich daher trotzdem im zweiten Bodenabschnitt Wasser sammeln, wird eine Eisbildung im zweiten Bodenabschnitt durch das Heizelement verhindert.In addition, it can be advantageous if the bottom of the outside module located in the outside atmosphere is formed with a separating agent which divides the bottom into two bottom sections. A first bottom section directs the draining off condensate to an outlet opening of the outdoor module. The second bottom section is located below the fan blades. The release agent prevents condensation from accumulating in the second bottom section below the fan blades. The heating element is also assigned to the second floor section. Should water nevertheless collect in the second floor section, ice formation in the second floor section is prevented by the heating element.

Gemäß einem vorteilhaften Ausführungsbeispiel ist das Trennmittel als eine Trennwand ausgebildet, die den ersten Bodenabschnitt vom zweiten Bodenabschnitt trennt. Dadurch wird zuverlässig verhindert, dass sich das abfließende Kondenswasser unterhalb der Gebläseschaufeln sammelt.According to an advantageous exemplary embodiment, the separating means is designed as a dividing wall which separates the first bottom section from the second bottom section. This reliably prevents the condensed water from collecting below the fan blades.

Gemäß einer weiteren Ausgestaltung kann das Trennmittel als eine Erhebung ausgebildet sein, die aus dem ersten Bodenabschnitt ragt. Eine Oberseite der Erhebung bildet den zweiten Bodenabschnitt unterhalb der Gebläseschaufeln.According to a further embodiment, the separating means can be designed as an elevation which protrudes from the first bottom section. An upper side of the elevation forms the second bottom section below the fan blades.

Vorteilhaft ist es, wenn zusätzlich auch der zweite Bodenabschnitt mit der Auslassöffnung in Verbindung ist. Gegebenenfalls auf den zweiten Bodenabschnitt tropfendes Kondenswasser kann somit über die Auslassöffnung abgeführt werden.It is advantageous if the second base section is also connected to the outlet opening. If necessary, condensate dripping onto the second floor section can thus be discharged via the outlet opening.

Das Abfließen des Kondenswassers aus dem ersten bzw. aus dem zweiten Bodenabschnitt mittels Schwerkraft kann verbessert werden, indem die Bodenabschnitte in einem Winkel, insbesondere 2° zur Auslassöffnung hin abfallen.The outflow of the condensed water from the first or from the second bottom section by means of gravity can be improved by the bottom sections falling at an angle, in particular 2 °, towards the outlet opening.

Da sich erfindungsgemäß kein Eis unterhalb der Gebläseschaufeln bildet, kann die Bauhöhe des Gebläses im Außenmodul wesentlich reduziert werden. Eine Außenumfangslinie der Gebläseschaufeln des Gebläses kann sich bis auf 2 bis 3 mm dem Boden annähern. Dadurch kann das Außenmodul kompakt mit geringer Bauhöhe gefertigt werden.Since, according to the invention, no ice forms below the fan blades, the overall height of the fan in the outdoor module can be significantly reduced. An outer circumferential line of the fan blades of the fan can approach the ground up to 2 to 3 mm. As a result, the outdoor module can be made compact with a low overall height.

Besonders vorteilhaft ist es, wenn das erfindungsgemäße Klimagerät sowohl in einem Raumkühlungsgerät als auch in einem Raumheizungsbetrieb arbeiten kann. Im Raumkühlungsbetrieb arbeitet der im Außenmodul vorgesehene zweite Wärmetauscher als ein Kondensator. In diesem Fall ist die Auslassöffnung im Außenmodul mittels eines Verschlusselements geschlossen. Kondenswasser wird über eine Verbindungsleitung vom Innenmodul in das Außenmodul geführt. Im Außenmodul wird das Kondenswasser auf den zweiten Wärmetauscher verteilt, um dessen Kondensierleistung zu erhöhen. Das abtropfende Kondenswasser wird auf dem Boden gesammelt. Aufgrund der geringen Bauhöhe des Gebläses wird das am Boden gesammelte Kondenswasser mittels der Gebläseschaufeln aufgenommen und erneut auf den zweiten Wärmetauscher geschleudert. Dagegen arbeitet im Raumheizungsbetrieb der zweite Wärmetauscher im Außenmodul als ein Verdampfer, an dem Wasser kondensiert. In diesem Fall ist die Auslassöffnung im Außenmodul geöffnet. Dadurch kann Kondenswasser vom zweiten Wärmetauscher auf den ersten Bodenabschnitt tropfen und durch die Auslassöffnung abfließen. Eine bei niedrigen Außentemperaturen bestehende Gefahr einer Eisbildung im Außenmodul ist somit verhindert.It is particularly advantageous if the air conditioning device according to the invention can work both in a room cooling device and in a room heating operation. In room cooling operation, the second heat exchanger provided in the outdoor module works as a condenser. In this case, the outlet opening in the outdoor module is closed by means of a closure element. Condensed water is led from the indoor module to the outdoor module via a connecting line. In the outdoor module, the condensed water is distributed to the second heat exchanger in order to increase its condensing capacity. The dripping condensate is collected on the floor. Due to the low overall height of the blower, the condensed water collected on the bottom is absorbed by the blower blades and spun onto the second heat exchanger again. In contrast, in room heating mode, the second heat exchanger in the outdoor module works as an evaporator on which water condenses. In this case, the outlet opening in the outdoor module is open. This allows condensed water to drip from the second heat exchanger onto the first base section and flow out through the outlet opening. This prevents the risk of ice forming in the outdoor module at low outside temperatures.

Nachfolgend ist ein Ausführungsbeispiel der Erfindung anhand der beigefügten Figuren beschrieben. Es zeigen:

Fig. 1
ein Innenmodul und ein Außenmodul des Klimageräts;
Fig. 2
in einer perspektivischen Ansicht das Außenmodul ohne Gehäuse;
Fig. 3
eine Ansicht in Pfeilrichtung A aus der Figur 2 auf den Boden des Außenmoduls ohne den zweiten Wärmetauscher; und
Fig. 4
eine Schnittansicht in Pfeilrichtung B aus der Figur 2 ohne den zweiten Wärmetauscher.
An exemplary embodiment of the invention is described below with reference to the attached figures. Show it:
Fig. 1
an indoor module and an outdoor module of the air conditioner;
Fig. 2
in a perspective view the outdoor module without housing;
Fig. 3
a view in the direction of arrow A from Figure 2 on the bottom of the outdoor module without the second heat exchanger; and
Fig. 4
a sectional view in the direction of arrow B from Figure 2 without the second heat exchanger.

In der Figur 1 ist gemäß dem ersten Ausführungsbeispiel ein Klimagerät mit einem Innenmodul 3 und einem Außenmodul 9 dargestellt. Das Innenmodul 3 des Klimageräts befindet sich dabei in einem zu klimatisierenden Raum 1. Das Außenmodul 9 ist in der Außenatmosphäre 11 vorgesehen. Die beiden Module 3 und 9 sind über einen Leitungsstrang 7 miteinander verbunden. Der Leitungsstrang 7 verläuft beispielsweise über ein geöffnetes Fenster zum Außenmodul 9. Das Außenmodul 9 kann dabei an einer Außenwand im Bereich des Fenster angeordnet sein. Im Leitungsstrang 7 sind beispielsweise elektrische Leitungen, eine Kältemittelleitung oder eine in der Figur 2 gezeigte Kondenswasserleitung 8 gebündelt. In bekannter Weise weist das Innenmodul einen ersten Wärmetauscher 5 sowie das Außenmodul 9 einen zweiten Wärmetauscher 17 auf. Der zweite Wärmetauscher 17 ist in der Figur 2 detailliert dargestellt. Daraus geht hervor, dass der zweite Wärmetauscher 17 U-förmig ausgebildet ist. Zwischen den beiden Schenkeln des U-förmigen Wärmetauschers 17 ist ein Gebläse 13 mit Gebläseschaufeln 15 angeordnet. Das Gebläse 13 ist an einer Halterung 18 montiert. Ein unteres Ende der Halterung 18 ist in dem Boden 19 eingesteckt. Ein oberes Ende der Halterung 18 ist an dem nicht gezeigten Außenmodul-Gehäuse montiert. Der Wärmetauscher 17 sitzt mit einer U-förmigen Stirnseite auf dem Boden 19 des Außenmoduls 9. Der Boden 19 neigt sich, wie in der Figur 4 dargestellt ist, über einen Winkel α in Richtung auf einen Abflusskanal 31. Der Abflusskanal 31 ist über eine Auslassöffnung 32 mit der Außenatmosphäre 11 in Verbindung ist. In den Figuren 2 bis 4 schließt ein Verschlusselement 33 die Auslassöffnung 32 geschlossen. Aus der Figur 2 geht ferner hervor, dass am Boden 19 eine Trennwand 29 ausgebildet ist. Die Trennwand 29 unterteilt den Boden 19 in einen ersten Bodenabschnitt 23 und einen zweiten Bodenabschnitt 25. Der zweite Bodenabschnitt 25 ist dabei gemäß der Figur 2 einerseits durch die Trennwand 29 sowie durch den Abflusskanal 31 eingegrenzt. Aus der Figur 4 geht hervor, dass eine Außenumfangslinie 27 der Gebläseschaufeln 15 bis auf einen geringfügigen Abstand a von ca. 3 mm dem zweiten Bodenabschnitt 25 angenähert ist.According to the first exemplary embodiment, FIG. 1 shows an air conditioner with an indoor module 3 and an outdoor module 9. The indoor module 3 of the air conditioner is located in a room 1 to be air-conditioned. The outdoor module 9 is provided in the outside atmosphere 11. The two modules 3 and 9 are connected to one another via a wiring harness 7. The wiring harness 7 runs, for example, via an open window to the outer module 9. The outer module 9 can be arranged on an outer wall in the region of the window. For example, electrical lines, a refrigerant line or a condensate line 8 shown in FIG. 2 are bundled in the line strand 7. In a known manner, the indoor module has a first heat exchanger 5 and the outdoor module 9 has a second heat exchanger 17. The second heat exchanger 17 is shown in detail in FIG. 2. This shows that the second heat exchanger 17 is U-shaped. A blower 13 with blower blades 15 is arranged between the two legs of the U-shaped heat exchanger 17. The fan 13 is mounted on a bracket 18. A lower end of the bracket 18 is inserted in the bottom 19. An upper end of the bracket 18 is mounted on the outdoor module housing, not shown. The heat exchanger 17 is seated with a U-shaped end face on the bottom 19 of the outer module 9. The bottom 19, as shown in FIG 32 is in connection with the outside atmosphere 11. In FIGS. 2 to 4, a closure element 33 closes the outlet opening 32 in a closed manner. FIG. 2 also shows that a partition 29 is formed on the bottom 19. The partition wall 29 divides the floor 19 into a first floor section 23 and a second floor section 25. The second floor section 25 is delimited on the one hand by the partition wall 29 and by the drainage channel 31 according to FIG. From FIG. 4 it can be seen that an outer circumferential line 27 of the fan blades 15 is approximated to the second base section 25 to a slight distance a of approximately 3 mm.

Auf der Unterseite des Bodens 19 ist ein Heizelement 35 als Widerstandsheizung ausgebildet. Die Widerstandsheizung 35 ist mit einer Steuereinrichtung 36 verbunden. Die Steuereinrichtung 36 weist einen Außentemperatursensor 38 auf, der an einer Frontseite des Modulbodens 19 vorgesehen ist.On the bottom of the bottom 19, a heating element 35 is formed as a resistance heater. The resistance heater 35 is connected to a control device 36. The control device 36 has an outside temperature sensor 38, which is provided on a front side of the module base 19.

Nachfolgend ist ein Raumkühlungsbetrieb des Klimageräts 1 beschrieben: Im Raumkühlungsbetrieb arbeitet der zweite Wärmetauscher 17 im Außenmodul 9 als ein Kondensator. Der erste Wärmetauscher 5 im Innenmodul 3 arbeitet als ein Verdampfer, an dem Kondenswasser aus der Raumluft kondensiert. Das Kondenswasser sammelt sich im Innenmodul 3. Mittels einer nicht gezeigten Pumpe wird das Kondenswasser in der in der Figur 2 gezeigten Kondensatleitung 8 in das Außenmodul 9 geführt. Die Kondensatleitung 8 mündet im Bereich oberhalb der Gebläseschaufeln 15 in das Außenmodul 9. Das Kondensatwasser tropft daher im Raumkühlungsbetrieb auf die Gebläseschaufeln 15, die es in Richtung auf den U-förmigen Wärmetauscher 17 abschleudern. Dadurch verteilt sich das Kondenswasser über den Wärmetauscher 17. In bekannter Weise wird somit eine Kondensierleistung des zweiten Wärmetauschers 17 erhöht. Zugleich ist im Raumkühlungsbetrieb des Klimageräts die Auslassöffnung 32 durch das Verschlusselement 33 verschlossen. Auf dem Boden 19 sammelt sich daher abtropfendes Wasser. Der Wasserpegel des am Boden 19 gesammelten Kondenswassers kann dadurch während des Raumkühlungsbetriebes ansteigen. Wenn sich der Wasserpegel der Außenumfangslinie 27 der Gebläseschaufeln 15 nähert, wird das am Boden 19 gesammelte Wasser mittels der Gebläseschaufeln 15 aufgenommen und erneut gegen den zweiten Wärmetauscher 17 geschleudert. Das von der Kondensatwasserleitung 17 abtropfende Kondenswasser wird demzufolge einerseits direkt von den Gebläseschaufeln 15 erfasst und über den Wärmetauscher 17 verteilt. Andererseits können die Gebläseschaufeln 15 auch Kondenswasser direkt vom Boden 19 aufnehmen und über den Wärmetauscher 17 verteilen.A space cooling operation of the air conditioning device 1 is described below: In the space cooling operation, the second heat exchanger 17 in the outdoor module 9 works as a condenser. The first heat exchanger 5 in the indoor module 3 works as an evaporator, on which condensed water from the room air condenses. The condensed water collects in the indoor module 3. The condensed water in the condensate line 8 shown in FIG. 2 is fed into the outdoor module 9 by means of a pump, not shown. The condensate line 8 opens into the outer module 9 in the area above the fan blades 15. The condensate water therefore drips onto the fan blades 15 in the space cooling mode, which they fling in the direction of the U-shaped heat exchanger 17. As a result, the condensed water is distributed over the heat exchanger 17. In a known manner, a condensing capacity of the second heat exchanger 17 is increased. At the same time, the outlet opening 32 is closed by the closure element 33 in the room cooling operation of the air conditioning device. Dripping water therefore collects on the floor 19. The water level of the condensed water collected on the bottom 19 can thereby rise during the room cooling operation. When the water level approaches the outer circumferential line 27 of the fan blades 15, the water collected on the bottom 19 is taken up by means of the fan blades 15 and hurled again against the second heat exchanger 17. The condensate dripping from the condensate water line 17 is consequently, on the one hand, directly captured by the fan blades 15 and distributed via the heat exchanger 17. On the other hand, the fan blades 15 can also pick up condensed water directly from the bottom 19 and distribute it via the heat exchanger 17.

In einem Raumheizungsbetrieb des Klimageräts arbeitet der erste Wärmetauscher 5 im Innenmodul 3 als ein Kondensator, um den Raum 1 zu erwärmen. Der zweite Wärmetauscher 17 im Außenmodul 9 arbeitet als ein Verdampfer. In diesem Fall kondensiert Wasser aus der Außenatmosphäre an dem zweiten Wärmetauscher 17. Vom zweiten Wärmetauscher 17 tropft das Kondenswasser 21 in Pfeilrichtung zum zweiten Bodenabschnitt 23 ab. Der zweite Bodenabschnitt 23 leitet das gesammelte Kondenswasser 21 zum Abflusskanal 31. Dieser ist im Raumheizungsbetrieb nicht durch das Verschlusselement 33 geschlossen. Das Kondenswasser 21 fließt daher über den Abflusskanal 31 aus dem Außenmodul 9 ab. Erfasst der Außentemperatursensor 38 der Steuereinrichtung 36 eine Außentemperatur im Bereich des Wasser-Gefrierpunktes, so schaltet die Steuereinrichtung 36 das Heizelement 35 ein. Der Boden 19 erwärmt sich dadurch auf eine über der Wasser-Gefriertemperatur liegende Temperatur. Demzufolge ist die Gefahr beseitigt, dass sich bei entsprechenden niedrigen Außentemperaturen Eis unterhalb der Gebläseschaufeln bilden kann. Ein Kontakt zwischen Gebläseschaufeln und auf dem Boden gebildetem Eis ist somit verhindert.In a room heating operation of the air conditioner, the first heat exchanger 5 in the indoor module 3 works as a condenser to heat the room 1. The second heat exchanger 17 in the outdoor module 9 works as an evaporator. In this case condenses water from the outside atmosphere on the second heat exchanger 17. The condensation water 21 drips from the second heat exchanger 17 in the direction of the arrow to the second bottom section 23. The second bottom section 23 directs the collected condensed water 21 to the drainage channel 31. This is not closed by the closure element 33 in the space heating mode. The condensed water 21 therefore flows out of the outdoor module 9 via the drain channel 31. If the outside temperature sensor 38 of the control device 36 detects an outside temperature in the region of the water freezing point, the control device 36 switches on the heating element 35. The bottom 19 thereby heats up to a temperature above the water freezing temperature. As a result, the risk is eliminated that ice can form underneath the fan blades at correspondingly low outside temperatures. This prevents contact between the fan blades and ice formed on the ground.

Aufgrund der Trennwand 29 ist der erste Bodenabschnitt 25 unterhalb der Gebläseschaufeln 15 für das im zweiten Bodenabschnitt 23 abfließende Wasser unzugänglich. Dadurch besteht im Raumheizungsbetrieb des Klimageräts nicht die Gefahr, dass vom Wärmetauscher 17 abtropfendes Kondenswasser 21 in den ersten Bodenabschnitt 25 gelangt.Because of the partition wall 29, the first bottom section 25 below the fan blades 15 is inaccessible to the water flowing off in the second bottom section 23. As a result, in the room heating operation of the air conditioning unit, there is no risk that condensation water 21 dripping from the heat exchanger 17 will reach the first floor section 25.

In Abwandlung zu dem gezeigten Ausführungsbeispiel kann auf eine Unterteilung des Bodens 19 in einen ersten und zweiten Bodenabschnitt durch die Trennwand 29 verzichtet werden. Dadurch sammelt sich auf dem gesamten Boden 19 Wasser an. Aufgrund des Heizelements 35 ist jedoch verhindert, dass das gesammelte Wasser zu Eis gefriert, das mit den Gebläseschaufeln 15 in Kontakt kommen kann.In a modification of the exemplary embodiment shown, a division of the floor 19 into a first and second floor section by the partition wall 29 can be dispensed with. As a result, 19 water accumulates on the entire floor. Due to the heating element 35, however, the collected water is prevented from freezing to ice, which can come into contact with the fan blades 15.

Claims (10)

Klimagerät mit einem, im zu klimatisierenden Raum (1) vorgesehenen Innenmodul (3) mit einem ersten Wärmetauscher (5) und einem über Verbindungsleitungen (7), wie elektrische Leitungen, eine Kältemittelleitung oder dergleichen, funktional mit dem Außenmodul (3) verbundenen Außenmodul (9), das außerhalb des zu klimatisierenden Raumes (1) an der Außenatmosphäre (11) vorgesehen ist, welches Außenmodul (9) ein Gebläse (13) mit Gebläseschaufeln (15) zum Erzeugen einer auf einen zweiten Wärmetauscher (17) gerichteten Luftströmung und einen unterhalb des Gebläses (13) vorgesehenen Boden (19) zum Sammeln von abtropfendem Kondenswasser (21) aufweist, in welchem eine Auslassöffnung (32) vorgesehen ist, durch die das gesammelte Kondenswasser (21) vom Boden (19) abfließen kann, dadurch gekennzeichnet, dass am Boden (19) des Außenmoduls (9) ein Heizelement (35) vorgesehen ist, das eine Eisbildung des auf dem Boden (19) gesammelten Kondenswassers (21) durch ein Erwärmen des Bodens (19) auf eine über der Wasser-Gefriertemperatur liegende Temperatur verhindert.Air conditioning device with an internal module (3) provided in the room to be air-conditioned (1) with a first heat exchanger (5) and an external module (1) that is functionally connected to the external module (3) via connecting lines (7), such as electrical lines, a refrigerant line or the like. 9), which is provided outside the space to be air-conditioned (1) on the outside atmosphere (11), which outside module (9) is a blower (13) with blower blades (15) for generating an air flow directed towards a second heat exchanger (17) and one has a bottom (19) provided below the blower (13) for collecting dripping condensate (21), in which there is an outlet opening (32) through which the collected condensed water (21) can flow off the bottom (19), characterized in that that a heating element (35) is provided on the bottom (19) of the outer module (9), which prevents the condensed water (21) collected on the bottom (19) from forming ice by heating the bottom (19) prevented from reaching a temperature above the freezing water temperature. Klimagerät nach Anspruch 1, dadurch gekennzeichnet, dass das Heizelement (35) als elektrische Widerstandsheizung ausgebildet ist.Air conditioner according to claim 1, characterized in that the heating element (35) is designed as an electrical resistance heater. Klimagerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass dem Heizelement (35) ein Sensor (38) zugeordnet ist, der bei Gefahr einer Eisbildung am Boden (19) das Heizelement (35) einschaltet.Air conditioner according to claim 1 or 2, characterized in that the heating element (35) is assigned a sensor (38) which switches on the heating element (35) in the event of ice formation on the floor (19). Klimagerät nach Anspruch 3, dadurch gekennzeichnet, dass der Sensor als Außentemperatursensor (38) ausgebildet ist, der bei einer Außentemperatur im Bereich der Wasser-Gefriertemperatur das Heizelement einschaltet.Air conditioner according to claim 3, characterized in that the sensor is designed as an outside temperature sensor (38) which switches on the heating element at an outside temperature in the range of the water freezing temperature. Klimagerät nach einem der vorhergehendenden Ansprüche, dadurch gekennzeichnet, dass der Boden (19) ein Trennmittel (29, 30) aufweist, das den Boden (19) in zwei Bodenabschnitte (23, 25) unterteilt, von denen der erste Bodenabschnitt (23) das abfließende Kondenswasser (21) zur Auslassöffnung (32) leitet und dem zweiten Bodenabschnitt (25) das Heizelement (35) zugeordnet ist.Air conditioner according to one of the preceding claims, characterized in that the bottom (19) has a separating means (29, 30) which divides the bottom (19) into two bottom sections (23, 25), of which the first bottom section (23) flowing condensate (21) leads to the outlet opening (32) and the heating element (35) is assigned to the second bottom section (25). Klimagerät nach Anspruch 5, dadurch gekennzeichnet, dass das Trennmittel als eine Trennwand (29) ausgebildet ist, die den ersten Bodenabschnitt (23) vom zweiten Bodenabschnitt (25) trennt.Air conditioner according to claim 5, characterized in that the separating means is designed as a partition (29) which separates the first floor section (23) from the second floor section (25). Klimagerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Außenumfangslinie (27) der Gebläseschaufeln (15) bis auf einen Abstand (a) von 2-3 mm dem zweiten Bodenabschnitt (19) angenähert ist.Air conditioner according to one of the preceding claims, characterized in that an outer circumferential line (27) of the fan blades (15) is approximated to the second base section (19) up to a distance (a) of 2-3 mm. Klimagerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Auslassöffnung (32) ein Verschlußelement (33) zugeordnet ist zum Verschließen der Auslassöffnung (32).Air conditioner according to one of the preceding claims, characterized in that the outlet opening (32) is associated with a closure element (33) for closing the outlet opening (32). Klimagerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der zweite Wärmetauscher (17) in einem Raumkühlungsbetrieb des Klimageräts als ein Kondensator und in einem Raumheizungsbetrieb des Klimageräts als ein Verdampfer arbeitet, an dem Wasser kondensiert.Air conditioner according to one of the preceding claims, characterized in that the second heat exchanger (17) works as a condenser in a room cooling operation of the air conditioner and as an evaporator in a room heating operation of the air conditioner, on which water condenses. Klimagerät nach Anspruch 9, dadurch gekennzeichnet, dass das Heizelement (35) im Raumheizungsbetrieb eingeschaltet ist und im Raumkühlungsbetrieb ausgeschaltet ist.Air conditioner according to claim 9, characterized in that the heating element (35) is switched on in the room heating mode and is switched off in the room cooling mode.
EP03021479A 2002-09-30 2003-09-23 Air-conditioning device Expired - Lifetime EP1403589B1 (en)

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FR2904685A1 (en) * 2006-08-04 2008-02-08 Prima Froid Sarl Soc Nouv Exterior air conditioning unit for building, has element absorbing water produced by condensation at level of condenser operating in reversible manner, and resistor to heat element and evaporate absorbed water
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WO2016103448A1 (en) * 2014-12-26 2016-06-30 三菱電機株式会社 Outdoor machine

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JP7497184B2 (en) * 2020-03-25 2024-06-10 日本キヤリア株式会社 Air conditioner indoor unit

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* Cited by examiner, † Cited by third party
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EP1746359A2 (en) * 2005-07-19 2007-01-24 Gerardo Ballesteros Avellaneda Evaporation device for air conditioning systems
EP1746359A3 (en) * 2005-07-19 2007-03-07 Gerardo Ballesteros Avellaneda Evaporation device for air conditioning systems
CN100441976C (en) * 2006-01-19 2008-12-10 西安交通大学 Impeller built-in heater capable of preventing air door of fan from freezing
FR2904685A1 (en) * 2006-08-04 2008-02-08 Prima Froid Sarl Soc Nouv Exterior air conditioning unit for building, has element absorbing water produced by condensation at level of condenser operating in reversible manner, and resistor to heat element and evaporate absorbed water
EP2180267A2 (en) * 2008-10-27 2010-04-28 LG Electronics Inc. Outdoor unti of air conditioner
EP2180267A3 (en) * 2008-10-27 2011-08-10 LG Electronics Inc. Outdoor unti of air conditioner
EP2977696A1 (en) * 2014-07-25 2016-01-27 Societe Industrielle de Chauffage (SIC) System and method for managing liquid condensates of a heat exchanger
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Also Published As

Publication number Publication date
ES2215469A1 (en) 2004-10-01
ATE348986T1 (en) 2007-01-15
ES2215469B1 (en) 2005-12-16
EP1403589B1 (en) 2006-12-20
DE50306017D1 (en) 2007-02-01
ES2277012T3 (en) 2007-07-01

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