EP2226587B1 - Air/water heat pump with a heat exchanger in a housing - Google Patents

Air/water heat pump with a heat exchanger in a housing Download PDF

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Publication number
EP2226587B1
EP2226587B1 EP10002291.2A EP10002291A EP2226587B1 EP 2226587 B1 EP2226587 B1 EP 2226587B1 EP 10002291 A EP10002291 A EP 10002291A EP 2226587 B1 EP2226587 B1 EP 2226587B1
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EP
European Patent Office
Prior art keywords
air
heat exchanger
airstream
heat pump
fan
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EP10002291.2A
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German (de)
French (fr)
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EP2226587A2 (en
EP2226587A3 (en
Inventor
Steffen Smollich
Michael Schjaumlöffel
Lutz Grünig
Frank Strohmeyer
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Stiebel Eltron GmbH and Co KG
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Stiebel Eltron GmbH and Co KG
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Publication of EP2226587A2 publication Critical patent/EP2226587A2/en
Publication of EP2226587A3 publication Critical patent/EP2226587A3/en
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    • 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
    • F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards
    • F24F1/58—Separate protective covers for outdoor units, e.g. solar guards, snow shields or camouflage

Definitions

  • the invention relates to an air / water heat pump with a housing arranged in a heat exchanger through which a first air is conveyed by means of a fan and a heat exchange between the first air and a refrigerant located in the heat exchanger.
  • air is conveyed through a heat exchanger by means of a blower or fan.
  • the heat exchanger operates in heat pump mode as an evaporator, wherein heat is transferred to the refrigerant through the air guided through the evaporator and this evaporates.
  • an opening in the air / water heat pump is provided, as well as for the blowing out of the air an opening is provided.
  • An air / water heat pump in which a housing in a lower mounting space is formed, in which a compressor, a condenser and electrical switching means are installed.
  • An upper mounting space is formed, in which an evaporator, a fan and an air guide are formed.
  • the lower mounting compartment is separated from the upper mounting compartment by a defrosting tray.
  • the outlet opening and the suction opening are formed on the ceiling of the upper mounting space. On the ceiling, a headboard with a suction channel and an outlet channel is placed.
  • the object of the invention is to provide a compact and efficient air / water heat pump, wherein the air flow is improved with a simultaneous noise reduction.
  • At least one first air duct which has a first opening to a first heat exchanger, is arranged on at least one side of the air / water heat pump.
  • the opening has a boundary and an edge, and the boundary to the air duct is at least partially approximately at the level of a first end of the heat exchanger. Due to the arrangement of the first air duct, so that a first boundary is substantially flush with the first end of the air duct and with the first boundary, the air duct is at least partially deflected approximately at right angles to the heat exchanger in the air duct.
  • the heat exchanger can be arranged slightly obliquely or vertically in the air / water heat pump.
  • the heat pump described here is a so-called air / water heat pump, in which heat which is withdrawn from the outside, heat is transferred to a refrigerant circuit with refrigerant and from there to a fluid, such. Water, in particular for the heating of service water and / or rooms is transmitted.
  • air / air heat pumps are also included in the invention.
  • a first edge which forms a boundary for the air duct of the first air duct, is arranged so that it lies approximately at the level of the central axis of the evaporator or in the region of the central axis of the evaporator.
  • the first opening is formed so that at least partially an air supply in the upper region of the evaporator, substantially without an air deflection by more than about 120 °, in particular 90 °, takes place.
  • the edge forms part of the first boundary of a
  • a wall opening is arranged below the first air channel in addition to the first opening.
  • air can pass directly, preferably through a grid, to the heat exchanger. This air preferably undergoes no or only a slight deflection through the grid.
  • the invention is also achieved in that a central axis of an evaporator, a first channel center of a first air channel and a fan center are approximately in line. It is advantageous if the line is inclined, approximately at an angle of 20-60 °
  • a first air is drawn in from the outside in an advantageous manner. At least a portion of the first air is deflected by about 90 ° in the first air duct before the first air is conveyed through the heat exchanger. The first air is conveyed by a fan and deflected in this by about 90 °. In a second air duct, the first air then flows in and is deflected there by about 150-180 ° and flows outward.
  • a second air is guided through at least one wall opening and deflected less than 90 °, preferably with almost no deflection, the second air is guided through the wall opening, impinges on the evaporator and mixes at least partially with the first air.
  • the invention is furthermore achieved by virtue of the fact that a first air is guided through a wall opening to the evaporator through a first air duct and a second air.
  • An air / water heat pump 1, as in Fig. 1 has a first air channel 30 and a second air channel 40.
  • the air channel 30 is formed by a first channel side 35, a first boundary 33, a first opening 32, a first edge 34 and a suction opening 31.
  • the first air duct 30 stands laterally from the air / water heat pump 1 and the intake opening 31 points downward.
  • the intake opening 31 is slightly inclined, approximately at an angle of 10 °. It has been shown that a considerable reduction in noise is achieved by this arrangement of the first air duct. This is in the embodiment in a line 60 with a central axis 21 of the heat exchanger 20 and a fan center 55.
  • the first channel center 36, the center axis 21 and the fan center 55 do not necessarily have to be exactly in line, but this has proved to be advantageous in the exemplary embodiment.
  • the line 60 at an angle of about 30 ° to the horizontal.
  • the air / water heat pump 1, a cover 9, with a conclusion is formed upwards.
  • This cover 9 is formed in an advantageous manner as a pitched roof and slightly bevelled on both sides, advantageously at an angle of at least 2 °.
  • incident rainwater flows off easily.
  • the first channel side 35 connects, which is arranged in the embodiment at an angle of about 110 ° to the lid.
  • the intake opening 31 is then angled largely at right angles to the first channel side 35 and connected to a wall 5.
  • the suction port 31 with the Wall 5 meets the first edge 34 is formed.
  • the first opening 32 is approximately as large as half of the heat exchanger 20.
  • the first opening 32 is greater than half of the flowed through surface of the heat exchanger 20th
  • a defrosting trough 24 is disposed below the heat exchanger 20 obliquely at an angle of about 10 °. Also visible is a port 23, with which the heat exchanger is connected to the refrigerant circuit of the heat pump.
  • the air / water heat pump 1 stands on a foot 3 of a base 4.
  • a frame 12 of the air / water heat pump 1 has advantageously struts 10 for enhancing and improving the mechanical stability.
  • Above the Abtauwanne 24 is the second end 26 of the heat exchanger 20.
  • a first end 25 is located in an advantageous manner in contact with the first boundary 33.
  • the heat exchanger 20 is also advantageously substantially airtight between the first end 25 to the first boundary 33 sealed, at least so far airtight, so that no significant sidestream arises on the heat exchanger 20 over.
  • the air guide is defined by the first boundary 33 and by the first end 25.
  • the cover 9 forms the air guide. In this case, it is advantageous to bring the heat exchanger 20 with its first end 25 to the cover 9 or form a seal between the first end 25 and the cover 9 so that no side stream is formed on the heat exchanger 20 over.
  • the heat exchanger 20 is advantageously airtight sealed at its second end 26 and other surfaces not shown, at least insofar airtight that as far as possible no secondary flow is formed on the heat exchanger 20 over.
  • the air / water heat pump 1 has inside a further intermediate wall 8 between two rooms, in each of which once the heat exchanger 20 and at least one fan 50 is arranged.
  • the intermediate wall 8 has an opening 13 in the region of the fan 50.
  • the fan center 55 may be at the center of the entire fan 50 or in the center of the fan 51.
  • the second air duct 40 is arranged laterally on the air / water heat pump 1. This is formed by a second boundary 43, a second channel side wall 45, an outlet opening 41, a second opening 42 and a second edge 44, which is formed at the point where the outlet opening 41 coincides with the second opening 42.
  • the second opening 42 is advantageously present in a side wall 6, so that the first air 52 and advantageously also the second air 53 or the mixture of first and second air 52, 53 flows from the heat pump into the second air duct.
  • the heat pump shown in the embodiment has in Fig. 1 the line 60, which connects the first channel center 36, the central axis 21 and the fan center 55.
  • this line 60 forms an angle ⁇ with a line of symmetry 61, which forms approximately a symmetrical axis of the geometry of the first air channel 30.
  • the angle ⁇ is about 60 °.
  • An angle ⁇ is formed between a line 62 which represents from the fan center point 55 approximately an average flow direction of the first air 52 and / or the second air 53.
  • the line 62 meets a line 63, which forms approximately a symmetry line of the geometry of the second air channel 40. According to the lines 62 and 63, the first air 52 and / or the second air 53 is deflected by an angle ⁇ of about 130 ° to 180 °, in particular about 150 °.
  • Fig. 2 the air flow through the heat pump is shown.
  • the first air 52 flows through the intake opening 31 into the air / water heat pump 1.
  • the first air is deflected substantially at an angle of approximately 90 ° and directed onto the heat exchanger 20.
  • a first boundary 33 which is preferably in contact with a first end 25 of the heat exchanger 20, the air is confined above, so that it preferably does not flow higher than the first end 25 of the heat exchanger.
  • the first boundary 33 may be round. In this case, or if the boundary 33 is designed to be higher, the first air 52 may also flow higher than the first end 25.
  • Other forms of the first and second air channels 30, 40 are also encompassed by the invention.
  • a grid 11 is partially used in an advantageous manner.
  • the grid 11 has air baffles with which the air is deflected, preferably a slight deflection of the air takes place.
  • the first air 52 propagates in different directions on the heat exchanger 20, then flows through the heat exchanger 20 and flows to an opening 13 to be taken by the fan 50 and blown into the second air passage 40.
  • the first and second air 52, 53 largely mixed and thus flows out of the air / water heat pump 1.
  • the insulating materials are used in the first air channel 30 and in the second air channel 40.
  • a particularly good soundproofing is achieved when as many walls as possible are insulated.
  • the edges 34 and / or 44 and other edges are covered with a flow profile or designed as an airfoil, z. B. are at least rounded, have a trailing edge or are configured in the form of a support surface. Also attached demolition edges, which are symmetrical or asymmetrical can be placed.
  • the air / water heat pump has two fans 50.
  • the fans 50 are arranged side by side substantially below the second opening 42.
  • a room 14 is arranged, in which a refrigeration unit or other electrical equipment of the heat pump are provided.
  • a refrigeration unit or other electrical equipment of the heat pump are provided.
  • the space 14 and the electrical and thermal connection Preferably, in the space 14 and the electrical and thermal connection.
  • Fig. 4 the first and second air channels 30, 40 are shown. Like ears, these two air channels 30, 40 are arranged on the air / water heat pump 1.
  • the cover 9 forms a slightly pointed roof, so that water can flow away and the side wall 6 on the output side of the air / water heat pump 1 is largely closed.
  • the corresponding wall 5 is preferably with a in Fig. 3 provided invisible wall opening 2, whereby the second air 53 is sucked.
  • it is provided to provide openings for blowing out air, even in the side wall 6 (not shown), in particular when the fan 50 is low. From the area where the fans 50 are arranged, air then also passes through the openings.
  • first and second air channels are shown.
  • Fig. 5 c an asymmetric arrangement and in Fig. 5 a with round boundaries for the air duct.
  • the first and second air channels 30, 40 have the same shape.
  • the first and second air ducts 30, 40 are separate components and are installed after the heat pump has been installed.
  • the edge 34 may be a flow area or a part of a continuous grid such. B. a grid strut.
  • the first opening 32 for the first air 52 and the wall opening 2 for the second air 53 form an opening, in particular designed as an air grid.
  • the edge 34 is then z. B. a component of this air grille.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Description

Die Erfindung betrifft eine Luft/Wasser-Wärmepumpe mit einem in einem Gehäuse angeordneten Wärmetauscher, durch den mittels eines Lüfters eine erste Luft gefördert wird und ein Wärmeaustausch zwischen der ersten Luft und einem im Wärmetauscher befindlichen Kältemittel erfolgt.The invention relates to an air / water heat pump with a housing arranged in a heat exchanger through which a first air is conveyed by means of a fan and a heat exchange between the first air and a refrigerant located in the heat exchanger.

Bei Luft/Wasser-Wärmepumpen wird Luft mittels eines Gebläses oder Lüfters über einen Wärmetauscher gefördert. Der Wärmetauscher arbeitet im Wärmepumpenbetrieb als Verdampfer, wobei durch die über den Verdampfer geführte Luft Wärme auf das Kältemittel übertragen wird und dieses verdampft. Zur Ansaugung der Luft ist eine Öffnung in der Luft/Wasser-Wärmepumpe vorgesehen, ebenso wie für das Ausblasen der Luft eine Öffnung vorgesehen ist.For air / water heat pumps, air is conveyed through a heat exchanger by means of a blower or fan. The heat exchanger operates in heat pump mode as an evaporator, wherein heat is transferred to the refrigerant through the air guided through the evaporator and this evaporates. For the intake of air, an opening in the air / water heat pump is provided, as well as for the blowing out of the air an opening is provided.

Aus DE 83 02 548 U1 ist eine Luft/Wasser-Wärmepumpe bekannt, bei der in einem Gehäuse ein unterer Montageraum ausgebildet ist, in dem ein Verdichter, ein Verflüssiger und elektrische Schaltmittel eingebaut sind. Ein oberer Montageraum ist ausgebildet, in dem ein Verdampfer, ein Lüfter und eine Luftführung ausgebildet sind. Der untere Montageraum ist vom oberen Montageraum durch eine Abtauwanne getrennt. Die Ausgangsöffnung und die Ansaugöffnung sind an der Decke des oberen Montageraums ausgebildet. Auf die Decke ist ein Kopfteil mit einem Ansaugkanal und einem Auslasskanal aufgesetzt.Out DE 83 02 548 U1 An air / water heat pump is known in which a housing in a lower mounting space is formed, in which a compressor, a condenser and electrical switching means are installed. An upper mounting space is formed, in which an evaporator, a fan and an air guide are formed. The lower mounting compartment is separated from the upper mounting compartment by a defrosting tray. The outlet opening and the suction opening are formed on the ceiling of the upper mounting space. On the ceiling, a headboard with a suction channel and an outlet channel is placed.

Aus US 4,139,052 , ist eine Luft/Wasser-Wärmepumpe nach dem Oberbegriff des Anspruchs 1 bekannt.Out US 4,139,052 , an air / water heat pump according to the preamble of claim 1 is known.

Aufgabe der Erfindung ist es, eine kompakte und effiziente Luft/Wasser-Wärmepumpe bereitzustellen, bei der die Luftführung bei einer gleichzeitigen Schallreduzierung verbessert ist.The object of the invention is to provide a compact and efficient air / water heat pump, wherein the air flow is improved with a simultaneous noise reduction.

Gelöst ist die Aufgabe durch den kennzeichnenden Teil des Anspruchs 1.The problem is solved by the characterizing part of claim 1.

In vorteilhafter Weise ist an wenigstens einer Seite der Luft/Wasser-Wärmepumpe wenigstens ein erster Luftkanal angeordnet, der eine erste Öffnung zu einem ersten Wärmetauscher aufweist. Die Öffnung weist eine Begrenzung und eine Kante auf, und die Begrenzung zur Luftführung liegt zumindest teilweise etwa auf der Höhe eines ersten Endes des Wärmetauschers. Durch die Anordnung des ersten Luftkanals, so dass eine erste Begrenzung im wesentlichen mit dem ersten Ende des Luftkanal abschließt und mit der ersten Begrenzung die Luftführung erfolgt, wird die angesaugte Luft im Luftkanal zumindest teilweise etwa rechtwinklig auf den Wärmetauscher umgelenkt. Der Wärmetauscher kann in der Luft/Wasser-Wärmepumpe leicht schräg oder auch senkrecht angeordnet sein. Bei der hier beschriebenen Wärmepumpe handelt es sich im Ausführungsbeispiel um eine sogenannte Luft/Wasser-Wärmepumpe, bei der der Luft, die von außen kommt, Wärme entzogen wird, auf einen Kältemittelkreislauf mit Kältemittel übertragen wird und von dort auf ein Fluid, wie z.B. Wasser, insbesondere zur Heizung von Brauchwasser und/oder Räumen übertragen wird. Gemäß der Erfindung sind allerdings auch Luft/Luft-Wärmepumpen von der Erfindung umfasst.In an advantageous manner, at least one first air duct, which has a first opening to a first heat exchanger, is arranged on at least one side of the air / water heat pump. The opening has a boundary and an edge, and the boundary to the air duct is at least partially approximately at the level of a first end of the heat exchanger. Due to the arrangement of the first air duct, so that a first boundary is substantially flush with the first end of the air duct and with the first boundary, the air duct is at least partially deflected approximately at right angles to the heat exchanger in the air duct. The heat exchanger can be arranged slightly obliquely or vertically in the air / water heat pump. In the exemplary embodiment, the heat pump described here is a so-called air / water heat pump, in which heat which is withdrawn from the outside, heat is transferred to a refrigerant circuit with refrigerant and from there to a fluid, such. Water, in particular for the heating of service water and / or rooms is transmitted. However, according to the invention, air / air heat pumps are also included in the invention.

Gemäß einem weiteren Gedanken der Erfindung ist eine erste Kante, die eine Grenze für die Luftführung des ersten Luftkanals bildet, so angeordnet, dass sie etwa in Höhe der Mittelachse des Verdampfers oder im Bereich der Mittelachse des Verdampfers liegt. Somit ist erreicht, dass die erste Öffnung so ausgebildet ist, dass zumindest teilweise eine Luftzufuhr im oberen Bereich des Verdampfers, im wesentlichen ohne dass eine Luftumlenkung um mehr als etwa 120°, insbesondere 90°, erfolgt. Vorteilhafterweise bildet die Kante einen Teil der ersten Begrenzung einerAccording to a further aspect of the invention, a first edge, which forms a boundary for the air duct of the first air duct, is arranged so that it lies approximately at the level of the central axis of the evaporator or in the region of the central axis of the evaporator. Thus, it is achieved that the first opening is formed so that at least partially an air supply in the upper region of the evaporator, substantially without an air deflection by more than about 120 °, in particular 90 °, takes place. Advantageously, the edge forms part of the first boundary of a

Gemäß der Erfindung wird zusätzlich zur ersten Öffnung eine Wandöffnung unterhalb des ersten Luftkanals angeordnet. Somit kann Luft direkt, vorzugsweise durch ein Gitter, zum Wärmetauscher gelangen. Diese Luft erfährt vorzugsweise keine oder nur eine geringfügige Umlenkung durch das Gitter.According to the invention, a wall opening is arranged below the first air channel in addition to the first opening. Thus, air can pass directly, preferably through a grid, to the heat exchanger. This air preferably undergoes no or only a slight deflection through the grid.

Gelöst ist die Erfindung ebenfalls dadurch, dass eine Mittelachse eines Verdampfers, ein erster Kanalmittelpunkt eines ersten Luftkanals und ein Lüfterradmittelpunkt in etwa auf einer Linie liegen. Vorteilhaft ist es, wenn die Linie schräg verläuft, etwa in einem Winkel von 20-60°The invention is also achieved in that a central axis of an evaporator, a first channel center of a first air channel and a fan center are approximately in line. It is advantageous if the line is inclined, approximately at an angle of 20-60 °

Weiterhin gelöst ist die Erfindung durch die kennzeichnenden Merkmale des Anspruchs 5.Furthermore, the invention is solved by the characterizing features of claim 5.

Gemäß einem Verfahren wird in vorteilhafter Weise eine erste Luft von außen angesaugt. Zumindest ein Teil der ersten Luft wird um etwa 90° im ersten Luftkanal umgelenkt, bevor die erste Luft durch den Wärmetauscher gefördert wird. Die erste Luft wird durch einen Lüfter gefördert und in diesem um etwa 90° umgelenkt. In einen zweiten Luftkanal strömt die erste Luft dann ein und wird dort um ca. 150-180° umgelenkt und strömt nach außen.According to a method, a first air is drawn in from the outside in an advantageous manner. At least a portion of the first air is deflected by about 90 ° in the first air duct before the first air is conveyed through the heat exchanger. The first air is conveyed by a fan and deflected in this by about 90 °. In a second air duct, the first air then flows in and is deflected there by about 150-180 ° and flows outward.

Eine zweite Luft wird erfindungsgemäß durch wenigstens eine Wandöffnung geführt und weniger als 90° abgelenkt, vorzugsweise nahezu ohne eine Ablenkung wird die zweite Luft durch die Wandöffnung geführt, trifft auf den Verdampfer und mischt sich zumindest teilweise mit der ersten Luft.According to the invention, a second air is guided through at least one wall opening and deflected less than 90 °, preferably with almost no deflection, the second air is guided through the wall opening, impinges on the evaporator and mixes at least partially with the first air.

Gelöst ist die Erfindung weiterhin dadurch, dass eine erste Luft durch einen ersten Luftkanal und eine zweite Luft durch eine Wandöffnung zum Verdampfer geführt ist.The invention is furthermore achieved by virtue of the fact that a first air is guided through a wall opening to the evaporator through a first air duct and a second air.

In den Figuren sind Ausführungsbeispiele der Luftwärmepumpe gezeigt:

  • Figur 1: Luftwärmepumpe im Schnitt mit Verdampfer und Lüfter,
  • Figur 2: Luftwärmepumpe mit Luftführung einer ersten und einer zweiten Luft,
  • Figur 3: Schnitt durch eine Luftwärmepumpe mit zwei Lüftern,
  • Figur 4: Ansicht einer Luft-Wärmepumpe,
  • Figur 5.
    • a - d: Formen von Luftkanälen an einer Luft-Wärmepumpe.
In the figures, embodiments of the air heat pump are shown:
  • FIG. 1 : Air heat pump on average with evaporator and fan,
  • FIG. 2 : Air heat pump with air guidance of a first and a second air,
  • FIG. 3 : Section through an air heat pump with two fans,
  • FIG. 4 Image: View of an air heat pump,
  • FIG. 5 ,
    • a - d: forming air ducts on an air heat pump.

Eine Luft/Wasser-Wärmepumpe 1, wie sie in Fig. 1 gezeigt ist, weist einen ersten Luftkanal 30 und einen zweiten Luftkanals 40 auf. Der Luftkanal 30 ist durch eine erste Kanalseite 35, eine erste Begrenzung 33, eine erste Öffnung 32 eine erste Kante 34 und eine Ansaugöffnung 31 gebildet. Der erste Luftkanal 30 steht dabei seitlich von der Luft/Wasser-Wärmepumpe 1 ab und die Ansaugöffnung 31 weist nach unten. Im Ausführungsbeispiel ist die Ansaugöffnung 31 leicht schräg, etwa in einem Winkel von 10°, angeordnet. Es hat sich gezeigt, dass durch diese Anordnung des ersten Luftkanals eine erhebliche Schallreduzierung erreicht ist. Geometrisch im Schnitt bildet sich ein erster Kanalmittelpunkt 36 im ersten Luftkanal 30. Dieser liegt im Ausführungsbeispiel in einer Linie 60 mit einer Mittelachse 21 des Wärmetauschers 20 und einem Lüftermittelpunkt 55. Dabei ist es vorteilhaft, aber nicht zwingend erforderlich, dass der Wärmetauscher 20 wie im Ausführungsbeispiel gezeigt, leicht schräg in einem Winkel von etwa 15° in der Luft/Wasser-Wärmepumpe angeordnet ist. Er kann auch in einem anderen Winkel oder auch senkrecht eingebaut sein. Der erste Kanalmittelpunkt 36, die Mittelachse 21 und der Lüftermittelpunkt 55 müssen nicht unbedingt exakt auf einer Linie liegen, dies hat sich aber im Ausführungsbeispiel als vorteilhaft erwiesen. Im Ausführungsbeispiel weist die Linie 60 einen Winkel von etwa 30° zur Horizontalen auf.An air / water heat pump 1, as in Fig. 1 is shown has a first air channel 30 and a second air channel 40. The air channel 30 is formed by a first channel side 35, a first boundary 33, a first opening 32, a first edge 34 and a suction opening 31. The first air duct 30 stands laterally from the air / water heat pump 1 and the intake opening 31 points downward. In the exemplary embodiment, the intake opening 31 is slightly inclined, approximately at an angle of 10 °. It has been shown that a considerable reduction in noise is achieved by this arrangement of the first air duct. This is in the embodiment in a line 60 with a central axis 21 of the heat exchanger 20 and a fan center 55. It is advantageous, but not mandatory, that the heat exchanger 20 as in Embodiment shown slightly obliquely disposed at an angle of about 15 ° in the air / water heat pump. It can also be installed at a different angle or vertically. The first channel center 36, the center axis 21 and the fan center 55 do not necessarily have to be exactly in line, but this has proved to be advantageous in the exemplary embodiment. In the exemplary embodiment, the line 60 at an angle of about 30 ° to the horizontal.

Weiterhin weist die Luft/Wasser-Wärmepumpe 1 einen Deckel 9 auf, mit dem ein Abschluss nach oben gebildet ist. Dieser Deckel 9 ist in vorteilhafter Weise wie ein Satteldach ausgebildet und nach beiden Seiten leicht abgeschrägt, vorteilhafterweise etwa in einem Winkel von mindestens 2°. Dadurch fließt auftreffendes Regenwasser leicht ab. An den Deckel 9 schließt sich die erste Kanalseite 35 an, die im Ausführungsbeispiel in einem Winkel von etwa 110° zum Deckel angeordnet ist. Die Ansaugöffnung 31 ist dann weitgehend rechtwinklig zur ersten Kanalseite 35 abgewinkelt und mit einer Wand 5 verbunden. Dort, wo die Ansaugöffnung 31 mit der Wand 5 zusammentrifft, ist die erste Kante 34 gebildet. Im Ausführungsbeispiel befindet sich in der Ansaugöffnung 31 oder der ersten Öffnung 32 in vorteilhafter Weise ein Luftgitter, mit dem der Berührungsschutz des Gerätes gewährleistet ist. Die erste Kante 34 liegt in vorteilhafter Weise etwa auf Höhe des Bereichs 22 des Wärmetauschers 20. In vorteilhafter Weise ist die erste Öffnung 32 etwa so groß wie die Hälfte des Wärmetauschers 20. Gemäß einem vorteilhaften Ausführungsbeispiel ist die erste Öffnung 32 größer als die Hälfte der durchströmten Fläche des Wärmetauschers 20.Furthermore, the air / water heat pump 1, a cover 9, with a conclusion is formed upwards. This cover 9 is formed in an advantageous manner as a pitched roof and slightly bevelled on both sides, advantageously at an angle of at least 2 °. As a result, incident rainwater flows off easily. To the lid 9, the first channel side 35 connects, which is arranged in the embodiment at an angle of about 110 ° to the lid. The intake opening 31 is then angled largely at right angles to the first channel side 35 and connected to a wall 5. There, where the suction port 31 with the Wall 5 meets, the first edge 34 is formed. In the exemplary embodiment is located in the intake port 31 or the first opening 32 in an advantageous manner, an air grille, with which the contact protection of the device is ensured. Advantageously, the first opening 32 is approximately as large as half of the heat exchanger 20. According to an advantageous embodiment, the first opening 32 is greater than half of the flowed through surface of the heat exchanger 20th

Weiter in Figur 1 ist eine Abtauwanne 24 unterhalb des Wärmetauschers 20 schräg in einem Winkel von ca. 10° angeordnet. Weiterhin sichtbar ist ein Anschluss 23, mit dem der Wärmetauscher an den Kältemittelkreislauf der Wärmepumpe angeschlossen ist. Die Luft/Wasser-Wärmepumpe 1 steht auf einem Fuß 3 eines Sockels 4. Ein Rahmen 12 der Luft/Wasser-Wärmepumpe 1 weist in vorteilhafter Weise Streben 10 zur Verstärkung und Verbesserung der mechanischen Stabilität auf. Oberhalb der Abtauwanne 24 befindet sich das zweite Ende 26 des Wärmetauschers 20. Ein erstes Ende 25 befindet sich in vorteilhafter Weise in Kontakt mit der ersten Begrenzung 33. Der Wärmetauscher 20 ist weiterhin in vorteilhafter Weise zwischen dem ersten Ende 25 zur ersten Begrenzung 33 weitgehend luftdicht abgedichtet, zumindest so weit luftdicht, dass damit kein erheblicher Nebenstrom am Wärmetauscher 20 vorbei entsteht. Die Luftführung ist durch die erste Begrenzung 33 und durch das erste Ende 25 definiert. Anstelle der ersten Begrenzung 33 ist es in einem anderen Ausführungsbeispiel auch möglich, dass der Deckel 9 die Luftführung bildet. In diesem Fall ist es von Vorteil, den Wärmetauscher 20 mit seinem ersten Ende 25 bis an den Deckel 9 heranzuführen oder eine Abdichtung zwischen dem ersten Ende 25 und dem Deckel 9 so auszubilden, dass kein Nebenstrom am Wärmetauscher 20 vorbei entsteht. Durch diese Anordnung der ersten Öffnung 32 mit der ersten Kante 34 und der ersten Begrenzung 33 kann zumindest ein Teil der Luft im wesentlichen ohne eine Umlenkung von mehr als 90 oder 110° zum Wärmetauscher 20 strömen. Der Wärmetauscher 20 ist in vorteilhafter Weise auch an seinem zweiten Ende 26 und nicht dargestellten weiteren Flächen weitgehend luftdicht abgedichtet, wenigstens insoweit luftdicht, dass möglichst kein Nebenstrom am Wärmetauscher 20 vorbei entsteht.Further in FIG. 1 a defrosting trough 24 is disposed below the heat exchanger 20 obliquely at an angle of about 10 °. Also visible is a port 23, with which the heat exchanger is connected to the refrigerant circuit of the heat pump. The air / water heat pump 1 stands on a foot 3 of a base 4. A frame 12 of the air / water heat pump 1 has advantageously struts 10 for enhancing and improving the mechanical stability. Above the Abtauwanne 24 is the second end 26 of the heat exchanger 20. A first end 25 is located in an advantageous manner in contact with the first boundary 33. The heat exchanger 20 is also advantageously substantially airtight between the first end 25 to the first boundary 33 sealed, at least so far airtight, so that no significant sidestream arises on the heat exchanger 20 over. The air guide is defined by the first boundary 33 and by the first end 25. Instead of the first boundary 33, it is also possible in another embodiment that the cover 9 forms the air guide. In this case, it is advantageous to bring the heat exchanger 20 with its first end 25 to the cover 9 or form a seal between the first end 25 and the cover 9 so that no side stream is formed on the heat exchanger 20 over. As a result of this arrangement of the first opening 32 with the first edge 34 and the first boundary 33, at least part of the air can flow to the heat exchanger 20 essentially without a deflection of more than 90 or 110 °. The heat exchanger 20 is advantageously airtight sealed at its second end 26 and other surfaces not shown, at least insofar airtight that as far as possible no secondary flow is formed on the heat exchanger 20 over.

Die Luft/Wasser-Wärmepumpe 1 weist im Inneren weiterhin eine Zwischenwand 8 zwischen zwei Räumen auf, in denen jeweils einmal der Wärmetauscher 20 und wenigstens ein Lüfter 50 angeordnet ist. Die Zwischenwand 8 weist im Bereich des Lüfters 50 eine Öffnung 13 auf. Der Lüftermittelpunkt 55 kann im Mittelpunkt des gesamten Lüfters 50 oder im Zentrum des Lüfterrades 51 liegen. Mittels einer Trennwand 7 ist der Bereich des Wärmetauschers 20 und des Lüfters 50 von einem Raum 14 abgegrenzt. Im Raum 14 ist insbesondere ein Kälteaggregat und die Schaltungstechnik sowie die Regelung für die Luft/Wasser-Wärmepumpe 1 angeordnet.The air / water heat pump 1 has inside a further intermediate wall 8 between two rooms, in each of which once the heat exchanger 20 and at least one fan 50 is arranged. The intermediate wall 8 has an opening 13 in the region of the fan 50. The fan center 55 may be at the center of the entire fan 50 or in the center of the fan 51. By means of a partition 7, the area of the heat exchanger 20 and the fan 50 is delimited from a space 14. In space 14 in particular a refrigeration unit and the circuit technology and the control for the air / water heat pump 1 is arranged.

Ausgangsseitig, nach dem die erste Luft den Lüfter 50 passiert hat, ist seitlich an der Luft/Wasser-Wärmepumpe 1 der zweite Luftkanal 40 angeordnet. Dieser ist gebildet durch eine zweite Begrenzung 43, eine zweite Kanalseitenwand 45, eine Auslassöffnung 41, eine zweite Öffnung 42 sowie eine zweite Kante 44, die an der Stelle gebildet ist, wo die Auslassöffnung 41 mit der zweiten Öffnung 42 zusammentrifft. Die zweite Öffnung 42 ist in vorteilhafter Weise in einer Seitenwand 6 vorhanden, damit die erste Luft 52 und in vorteilhafter Weise auch die zweite Luft 53 oder die Mischung aus erster und zweiter Luft 52, 53 aus der Wärmepumpe in den zweiten Luftkanal strömt.On the output side, after the first air has passed through the fan 50, the second air duct 40 is arranged laterally on the air / water heat pump 1. This is formed by a second boundary 43, a second channel side wall 45, an outlet opening 41, a second opening 42 and a second edge 44, which is formed at the point where the outlet opening 41 coincides with the second opening 42. The second opening 42 is advantageously present in a side wall 6, so that the first air 52 and advantageously also the second air 53 or the mixture of first and second air 52, 53 flows from the heat pump into the second air duct.

Die im Ausführungsbeispiel gezeigte Wärmepumpe weist in Fig. 1 die Linie 60 auf, die den ersten Kanalmittelpunkt 36, die Mittelachse 21 und den Lüftermittelpunkt 55 verbindet. Eingangsseitig bildet diese Linie 60 einen Winkel α mit einer Symmetrielinie 61, die etwa eine symmetrische Achse der Geometrie des ersten Luftkanals 30 bildet. Der Winkel α beträgt etwa 60°. Abhängig davon, ob die Ansaugöffnung 31 waagerecht oder leicht abgewickelt ausgebildet ist, ändert sich dieser Winkel α. Ein Winkel β ist zwischen einer Linie 62 gebildet, die vom Lüftermittelpunkt 55 in etwa eine mittlere Strömungsrichtung der ersten Luft 52 und/oder der zweiten Luft 53 darstellt. Die Linie 62 trifft auf eine Linie 63, die in etwa eine Symmetrielinie der Geometrie des zweiten Luftkanals 40 bildet. Gemäß den Linien 62 und 63 wird die erste Luft 52 und/oder die zweite Luft 53 um einen Winkel γ von etwa 130 ° bis 180°, insbesondere ca. 150 ° umgelenkt.The heat pump shown in the embodiment has in Fig. 1 the line 60, which connects the first channel center 36, the central axis 21 and the fan center 55. On the input side, this line 60 forms an angle α with a line of symmetry 61, which forms approximately a symmetrical axis of the geometry of the first air channel 30. The angle α is about 60 °. Depending on whether the intake opening 31 is formed horizontally or slightly unwound, this angle α changes. An angle β is formed between a line 62 which represents from the fan center point 55 approximately an average flow direction of the first air 52 and / or the second air 53. The line 62 meets a line 63, which forms approximately a symmetry line of the geometry of the second air channel 40. According to the lines 62 and 63, the first air 52 and / or the second air 53 is deflected by an angle γ of about 130 ° to 180 °, in particular about 150 °.

Gemäß Fig. 2 ist die Luftströmung durch die Wärmepumpe gezeigt. Die erste Luft 52 strömt durch die Ansaugöffnung 31 in die Luft/Wasser-Wärmepumpe 1. Im ersten Luftkanal 30 wird die erste Luft im Wesentlichen um einen Winkel von ca. 90° umgelenkt und auf den Wärmetauscher 20 gelenkt. Durch eine erste Begrenzung 33, die mit einem ersten Ende 25 des Wärmetauschers 20 vorzugsweise in Kontakt steht, wird die Luft oben begrenzt, so dass sie vorzugsweise nicht höher als das erste Ende 25 des Wärmetauschers strömt. Für eine verbesserte Strömung kann die erste Begrenzung 33 rundlich ausgeführt sein. In diesem Fall, oder wenn die Begrenzung 33 höher ausgelegt ist, kann die erste Luft 52 auch höher als das erste Ende 25 strömen. Von der Erfindung umfasst sind auch andere Formen des ersten und zweiten Luftkanals 30, 40.
Eine zweite Luft 53 strömt durch eine Wandöffnung 2 im Wesentlichen waagerecht ohne eine Umlenkung auf den Wärmetauscher 20. In die Wandöffnung 2 ist in vorteilhafter Weise teilweise ein Gitter 11 eingesetzt. Soweit das Gitter 11 Luftleitbleche aufweist, mit denen die Luft abgelenkt wird, erfolgt vorzugsweise eine leichte Ablenkung der Luft. Insbesondere ist es von Vorteil, in verschiedenen Höhen des Gitters Bleche anzuordnen, die einen unterschiedlichen Winkel aufweisen so, dass die zweite Luft 53 möglichst senkrecht auf den Wärmetauscher 20 auf trifft. Die Bleche sind demnach so ausgerichtet, dass sie nahezu senkrecht auf den Wärmetauscher 20 weisen. In Fig. 2 ist gezeigt, dass sich die erste Luft 52 in verschiedene Richtungen auf dem Wärmetauscher 20 ausbreitet, dann durch den Wärmetauscher 20 strömt und auf eine Öffnung 13 zuströmt, um vom Lüfter 50 mitgenommen und in den zweiten Luftkanal 40 geblasen zu werden. Spätestens im Lüfter 50 wird die erste und zweite Luft 52, 53 weitgehend gemischt und strömt so aus der Luft/Wasser-Wärmepumpe 1 aus.According to Fig. 2 the air flow through the heat pump is shown. The first air 52 flows through the intake opening 31 into the air / water heat pump 1. In the first air duct 30, the first air is deflected substantially at an angle of approximately 90 ° and directed onto the heat exchanger 20. By a first boundary 33, which is preferably in contact with a first end 25 of the heat exchanger 20, the air is confined above, so that it preferably does not flow higher than the first end 25 of the heat exchanger. For improved flow, the first boundary 33 may be round. In this case, or if the boundary 33 is designed to be higher, the first air 52 may also flow higher than the first end 25. Other forms of the first and second air channels 30, 40 are also encompassed by the invention.
A second air 53 flows through a wall opening 2 substantially horizontally without a deflection on the heat exchanger 20. In the wall opening 2, a grid 11 is partially used in an advantageous manner. As far as the grid 11 has air baffles with which the air is deflected, preferably a slight deflection of the air takes place. In particular, it is advantageous to arrange at different heights of the grid plates, which have a different angle so that the second air 53 as possible perpendicular to the heat exchanger 20 hits. The sheets are therefore aligned so that they are almost perpendicular to the heat exchanger 20. In Fig. 2 It is shown that the first air 52 propagates in different directions on the heat exchanger 20, then flows through the heat exchanger 20 and flows to an opening 13 to be taken by the fan 50 and blown into the second air passage 40. At the latest in the fan 50, the first and second air 52, 53 largely mixed and thus flows out of the air / water heat pump 1.

Zur Schalldämmung ist es vorteilhaft in die Zonen, wo eine Luftströmung erfolgt Dämmmatten oder Dämmmaterial einzulegen. Insbesondere sind die Dämmmaterialien im ersten Luftkanal 30 und im zweiten Luftkanal 40 eingesetzt. Eine besondefers gute Schalldämmung wird erreicht, wenn möglichst viele Wände gedämmt sind. So ist es von Vorteil die Trennwand 7, die Zwischenwand 8, den Deckel 9 und oder die Begrenzung 33 zu dämmen. Hinsichtlich der Strömungsgeräusche ist es weiterhin von Vorteil wenn die Kanten 34 und/oder 44 sowie andere Kanten mit einem Strömungsprofil abgedeckt sind oder als Strömungsprofil ausgestaltet sind, z. B. zumindest abgerundet sind, eine Abrisskante haben oder in der Form einer Tragfläche ausgestaltet sind. Auch aufgesetzte Abrisskanten, die symmetrisch oder unsymmetrisch sind können aufgesetzt sein.For sound insulation, it is advantageous in the zones where an air flow is made to insert insulating mats or insulation material. In particular, the insulating materials are used in the first air channel 30 and in the second air channel 40. A particularly good soundproofing is achieved when as many walls as possible are insulated. Thus, it is advantageous to insulate the dividing wall 7, the intermediate wall 8, the cover 9 and / or the boundary 33. With regard to the flow noise, it is also advantageous if the edges 34 and / or 44 and other edges are covered with a flow profile or designed as an airfoil, z. B. are at least rounded, have a trailing edge or are configured in the form of a support surface. Also attached demolition edges, which are symmetrical or asymmetrical can be placed.

Im Ausführungsbeispiel gemäß Fig. 3 weist die Luft/Wasser-Wärmepumpe zwei Lüfter 50 auf. Die Lüfter 50 sind nebeneinander im Wesentlichen unterhalb der zweiten Öffnung 42 angeordnet. Durch eine Trennwand 7 lufttechnisch getrennt ist ein Raum 14 angeordnet, in dem ein Kälteaggregat oder weitere elektrotechnische Einrichtungen der Wärmepumpe vorgesehen sind. Vorzugsweise liegt im Raum 14 auch der elektrotechnische sowie wärmetechnische Anschluss.In the embodiment according to Fig. 3 the air / water heat pump has two fans 50. The fans 50 are arranged side by side substantially below the second opening 42. Separated by a partition wall 7 a room 14 is arranged, in which a refrigeration unit or other electrical equipment of the heat pump are provided. Preferably, in the space 14 and the electrical and thermal connection.

In Fig. 4 ist der erste und zweite Luftkanal 30, 40 gezeigt. Wie Ohren sind diese beiden Luftkanäle 30, 40 an der Luft/Wasser-Wärmepumpe 1 angeordnet. Der Deckel 9 bildet ein leicht spitzes Dach, damit Wasser abfließen kann und die Seitenwand 6 auf der Ausgangsseite der Luft/Wasser-Wärmepumpe 1 ist weitgehend geschlossen. Auf der Seite der Luft/Wasser-Wärmepumpe 1, in die die erste und die zweite Luft 52, 53 einströmen, ist die entsprechende Wand 5 vorzugsweise mit einer in Fig. 3 nicht sichtbaren Wandöffnung 2 versehen, wodurch die zweite Luft 53 angesaugt wird. In einem weiteren Ausführungsbeispiel ist vorgesehen, auch in der Seitenwand 6 (nicht dargestellt) Öffnungen zum Ausblasen von Luft vorzusehen, insbesondere dann, wenn der Lüfter 50 tief liegt. Aus dem Bereich, wo die Lüfter 50 angeordnet sind, tritt dann Luft auch durch die Öffnungen.In Fig. 4 the first and second air channels 30, 40 are shown. Like ears, these two air channels 30, 40 are arranged on the air / water heat pump 1. The cover 9 forms a slightly pointed roof, so that water can flow away and the side wall 6 on the output side of the air / water heat pump 1 is largely closed. On the side of the air / water heat pump 1, in which the first and the second air flow 52, 53, the corresponding wall 5 is preferably with a in Fig. 3 provided invisible wall opening 2, whereby the second air 53 is sucked. In a further embodiment, it is provided to provide openings for blowing out air, even in the side wall 6 (not shown), in particular when the fan 50 is low. From the area where the fans 50 are arranged, air then also passes through the openings.

In Fig. 5 a, b, c und d sind Ausführungsformen der ersten und zweiten Luftkanäle gezeigt. Insbesondere in Fig. 5 c eine asymmetrische Anordnung und in Fig. 5 a mit runden Begrenzungen für die Luftführung. Vorzugsweise weisen der erste und zweite Luftkanal 30, 40 die gleiche Form auf. Gemäß einem weiteren Gedanken der Erfindung sind der erste und der zweite Luftkanal 30, 40 separate Bauteile und werden nach der Aufstellung der Wärmepumpe angebracht.In Fig. 5 a, b, c and d Embodiments of the first and second air channels are shown. In particular in Fig. 5 c an asymmetric arrangement and in Fig. 5 a with round boundaries for the air duct. Preferably, the first and second air channels 30, 40 have the same shape. According to another aspect of the invention, the first and second air ducts 30, 40 are separate components and are installed after the heat pump has been installed.

In weiteren vorteilhaften Ausführungen kann die Kante 34 eine Strömungsfläche sein oder ein Teil eines durchgehenden Gitters wie z. B. eine Gitterstrebe. Somit ist von der Erfindung auch umfasst, dass die erste Öffnung 32 für die erste Luft 52 und die Wandöffnung 2 für die zweite Luft 53 eine Öffnung bilden, insbesondere als ein Luftgitter ausgeführt sind. Somit ist die Kante 34 dann z. B. ein Bestandteil dieses Luftgitters.In further advantageous embodiments, the edge 34 may be a flow area or a part of a continuous grid such. B. a grid strut. Thus, it is also encompassed by the invention that the first opening 32 for the first air 52 and the wall opening 2 for the second air 53 form an opening, in particular designed as an air grid. Thus, the edge 34 is then z. B. a component of this air grille.

Claims (5)

  1. Air/water heat pump (1) with an encased heat exchanger (20) through which a first airstream (52) is conveyed by means of a fan (50) and where a heat exchange takes place between the first airstream (52) and a coolant inside the heat exchanger (20), with at least one first air duct (30) provided on at least one side of the air/water heat pump (1) that has a first opening (32) to the heat exchanger (20), and the first opening (32) featuring a first boundary (33) and first edge (34), while a suction intake (31) of the air duct (30) is provided into which the first airstream (52) can flow through the air/water heat pump (1), the boundary (33) for guiding the air is at least partly approximately located on the level of a first end (25) of the heat exchanger (20), with at least one wall opening (2) provided underneath the edge (34),
    characterized in that
    the at least one wall opening (2) is provided before the heat exchanger (20) through which a second airstream (53) can flow horizontally to the heat exchanger (20), while a partition (8) is provided inside between two spaces, the partition (8) having an opening (13) in the area of the fan (50), and the heat exchanger (20) is respectively provided in each of the two spaces and at least one fan (50).
  2. Air/water heat pump (1) as per Claim 1,
    characterized in that the edge (34) is placed horizontally and approximately at the level of the area (22) of the centreline (21) of the heat exchanger (20).
  3. Air/water heat pump (1) as per one of the preceding claims,
    characterized in that the edge (34) forms a boundary of a suction intake (31).
  4. Air/water heat pump (1) with an evaporator and a fan wheel,
    characterized in that a centreline (21) of the heat exchanger (20), a first duct centre (36) of a first air duct (30) and a fan wheel centre (55) are all approximately in line.
  5. Process for conducting air in an air/water heat pump (1) as per Claim 1, with a fan (50) conducting a first airstream (52) to a heat exchanger (20) so that a heat exchange takes place between the first airstream (52) and coolant located inside the heat exchanger (20), including the process step that the first airstream is sucked in from the outside, at least part of the first airstream (52) is subjected to a first deflection of around 90° in a first air duct (30) before the first airstream (52) is conveyed through the heat exchanger (20), the first airstream (52) is conveyed through a fan (50) wherein it is deflected by around 90°, the first airstream (52) flows into a second air duct (40), where it partly flows to the outside deflected by at least 130°, and a second airstream (53) is horizontally conducted through a wall opening (2) to the heat exchanger (20) where the second airstream (53) is deflected less than 90°, preferably conveyed through the wall opening (2) with virtually no deflection, reaches the heat exchanger (20) and at least partly mixes with the first airstream (52).
EP10002291.2A 2009-03-05 2010-03-05 Air/water heat pump with a heat exchanger in a housing Active EP2226587B1 (en)

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DE102009011370.3A DE102009011370B4 (en) 2009-03-05 2009-03-05 Air / water heat pump with a housing arranged in a heat exchanger

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EP2226587A3 EP2226587A3 (en) 2014-01-15
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DE102017101264A1 (en) 2017-01-24 2018-07-26 Vaillant Gmbh Air heat exchanger

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JP5220076B2 (en) * 2010-09-29 2013-06-26 三菱電機株式会社 Outdoor unit and air conditioner equipped with the same
DE102020207457A1 (en) 2020-06-17 2021-12-23 Robert Bosch Gesellschaft mit beschränkter Haftung Heat exchanger unit

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US4139052A (en) 1977-11-23 1979-02-13 Westinghouse Electric Corp. Roof top air conditioning unit
DE8302548U1 (en) 1983-01-31 1987-11-05 Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden Air Water heatpump
DE4002560C2 (en) * 1990-01-30 1995-07-20 Stiebel Eltron Gmbh & Co Kg Air conditioner
US6038879A (en) * 1995-08-08 2000-03-21 Yvon Turcotte Combined air exchange and air conditioning unit
WO2003046440A1 (en) 2001-11-30 2003-06-05 Choon-Kyoung Park Air conditioning apparatus
DE202005016955U1 (en) 2005-10-27 2007-03-08 Glen Dimplex Deutschland Gmbh Heat pump for heating or cooling of building, has heat exchanger and lining encasing outer housing whereby lining is provided with second air inlet and second air outlet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017101264A1 (en) 2017-01-24 2018-07-26 Vaillant Gmbh Air heat exchanger

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DE102009011370A1 (en) 2010-09-16
EP2226587A2 (en) 2010-09-08
EP2226587A3 (en) 2014-01-15

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