Arrangement of an exhaust nozzle for a portable air conditioner at a window gap

Abstract

The invention relates to an arrangement of an exhaust air nozzle (10) for a mobile air conditioner for discharging exhaust air from the mobile air conditioner through a window gap, comprising an inlet hollow body (11) with an inlet nozzle (12) for connection with an exhaust air hose of the mobile air conditioner, to which an exhaust air duct (13) with a rectangular cross-section is connected, which has an outlet (14) for the exhaust air. The exhaust nozzle (10) is characterized in that the inlet hollow body (11) is a prism with a substantially triangular base (114) and a lateral surface which has a front side (111) of the inlet hollow body (11) on which the inlet nozzle (12) is arranged, a support side (112) with which the exhaust nozzle rests on or against a sash frame (7) of a window (5), and a rear side (113) on which an airflow entering the air inlet nozzle (12) impinges.

Description

[0001] The invention relates to an arrangement of an exhaust air nozzle on a window gap for discharging exhaust air from a mobile air conditioner from the window gap, in particular from a tilted window. The exhaust air nozzle has a hollow inlet body with an inlet nozzle for connection to an exhaust air hose of the mobile air conditioner. Adjoining the hollow inlet body is an exhaust air duct with a rectangular cross-section, which has an outlet from which the exhaust air from the mobile air conditioner is released into the environment.

[0002] When mobile air conditioning units are operated, heated exhaust air is generated that must be vented from a building to the outside. Similarly, exhaust air from drying units used to dry the structure of a building during construction or after water damage, or from certain types of air purification units, must also be vented to the outside.

[0003] Suitable exhaust air options, e.g. in the form of a wall duct, can not always be provided to allow the exhaust air to be released to the outside. In these cases, windows are usually suitable as building openings through which an exhaust hose from the mobile air conditioning unit can be laid to the outside. To do this, the window can be fully or partially swung open and the exhaust hose fed through. The window sash is fixed in the fully or partially open position and the gap remaining outside the hose is closed with a suitable cover. This is not only time-consuming but also unsatisfactory from a burglar-proofing perspective. Another option is to route the exhaust hose through the gap in a tilted window. Due to the hose diameter usually used in the range of 10-15 centimeters (cm), this is not always possible.

[0004] There are exhaust nozzles on the market that reduce the hose diameter in the area of ​​the window gap when the window is tilted open, resulting in a substantially rectangular exhaust duct that is inserted through the window gap and through which the exhaust air from the portable air conditioner can be discharged to the outside. However, with these types of exhaust nozzles, the change in cross-section leads to loud exhaust noise and increased hose resistance, which reduces the effectiveness of the portable air conditioner. Furthermore, the exhaust nozzles available on the market are cumbersome to handle, as they tend to slip out of the window gap without special fastening.

[0005] Comparable exhaust nozzles for mobile air conditioners are shown in the publications WO 2014 / 015356 A2, DE 195 33 226 A1, and DE 20 2006 000 695 U1. A round inlet nozzle leads into an exhaust duct with a substantially rectangular cross-section. The exhaust duct is either curved or formed from at least two angled sections to facilitate its passage through a window gap. The curved or angled shape of the exhaust duct prevents the exhaust nozzle from slipping out of the window gap. However, the change in cross-section from the round inlet nozzle to the rectangular outlet duct also results in an increase in flow resistance.

[0006] US Pat. No. 5,338,255 A discloses an exhaust box that can be mounted on a rectangular wall opening and features a prism-shaped attachment. A round hose connection is located on one side of the prism-shaped attachment. Due to the geometry of the attachment, a hose connected to it does not run vertically away from the exhaust box, making it easier to guide the hose downwards, for example. The exhaust box is designed for permanent installation in the wall and is not suitable for use with a mobile air conditioner in a window gap.

[0007] It is an object of the present invention to provide an arrangement of an exhaust air nozzle on a window gap which influences the effectiveness of the mobile air conditioning unit as little as possible, in which the exhaust air is discharged with the lowest possible noise emission and in which the exhaust air nozzle is simple and safe to handle.

[0008] This object is achieved by arranging an exhaust air nozzle at a window gap with the features of the independent claim. Advantageous embodiments and further developments are the subject of the dependent claims.

[0009] An arrangement of the type mentioned at the outset according to the application is characterized in that the inlet hollow body of the exhaust air nozzle is a prism with a triangular base, the outer surface of which has a front side of the inlet hollow body on which the inlet nozzle is arranged, a support side with which the exhaust air nozzle rests on or against a sash frame of a window and which is arranged perpendicular to the front side, and a rear side onto which an air flow entering the inlet nozzle strikes.

[0010] The exhaust air nozzle designed in this way can be inserted into the window gap with its exhaust air duct, preferably the upper horizontal window gap with a tilted window. The inlet hollow body, with its triangular profile in a direction perpendicular to the air flow, provides the support side that rests on the edge of the sash of the tilted window, whereby the exhaust air nozzle is securely held in this position and can absorb the weight and tensile forces of a connected exhaust air hose without slipping out of the window gap. At the same time, the triangular shape of the inlet hollow body means that its rear wall is inclined to the air flow entering through the inlet nozzle. This redirects the air flow towards the exhaust air duct, keeping flow resistance and noise levels as low as possible.

[0011] In an advantageous refinement of the arrangement, the support side and the front side of the exhaust air nozzle are perpendicular to one another. Further preferably, the rear side lies in a plane with the top side of the exhaust air duct, i.e., the rear side of the hollow inlet body merges directly into the top side of the exhaust air duct. This also minimizes air resistance within the exhaust air nozzle.

[0012] Preferably, an acute angle is formed between the front and rear of the inlet hollow body, which advantageously lies in the range of 20-50° and particularly preferably in the range of 30-40°, for example at approximately 35°. The angle between the support side and an underside of the exhaust air duct is then preferably an obtuse angle in the range of 110-140° and particularly advantageously in the range of 120-130°, for example at approximately 125°. This geometry allows the acute angle between the front and rear of the inlet hollow body to be positioned outside a window niche, which enables the exhaust air nozzle to be used in an upper window gap with a tilted window, even when there is little space between a window sash and the window lintel.

[0013] In a further advantageous development of the arrangement, the exhaust air duct of the exhaust air nozzle has two sections that are aligned at an angle to one another. In particular, the section in which the outlet is located, i.e. the outer section of the exhaust air duct, is angled towards the inlet hollow body so that when used in the window it is angled towards the window pane. The angle can, for example, be in a range of 140-170° and preferably 150-160°. The exhaust air stream emitted by the exhaust air nozzle is thus not blown as strongly towards a sidewalk running in front of the building, for example. This effect can also be reinforced by an additional angled lip protruding from one side of the exhaust air duct. The angled shape of the exhaust air duct also advantageously influences the weight distribution of the exhaust air nozzle, ensuring that it sits securely on the tilted sash frame even when no exhaust air hose is connected.

[0014] In a further advantageous embodiment of the arrangement, the cross-sectional area of ​​the exhaust air duct approximately corresponds to the cross-sectional area of ​​the inlet nozzle. This prevents the exhaust air duct itself from creating increased air resistance for the exhaust air nozzle.

[0015] In a further advantageous embodiment of the arrangement, the exhaust air nozzle is made of sheet metal, e.g., from folded and riveted sheet metal elements. This allows for robust yet cost-effective production. The increased weight compared to other materials is also advantageous for ensuring the exhaust air nozzle fits snugly in the window gap.

[0016] The invention is explained in more detail below using an exemplary embodiment and the accompanying figures. The figures show: Fig. 1, Fig. 2 a perspective view of a tilted window with an inserted exhaust air nozzle from different viewing directions; Fig. 3, Fig. 4 a perspective view of the exhaust air nozzle of the Fig. 1 and Fig. 2 from different perspectives; and Fig. 5 The exhaust air nozzle of the previous figures inserted into a side window gap of a tilted window.

[0017] In the Fig. 1 and Fig. Figure 2 shows a section of a wall 1 with a window recess 2 with a reveal 3 and lintel 4, each in a perspective view from different viewing directions. A window 5 is inserted into the window recess 2, which has a frame 6 anchored in the recess and a sash 7.

[0018] The window is tilted so that in the area of ​​the reveal 3 a narrow gap is formed which widens upwards and in the area of ​​the lintel 4 a larger gap which is evenly wide over its length.

[0019] An exhaust air nozzle 10 is inserted into this wider upper gap. It has a triangular, prism-shaped hollow inlet body 11, hereinafter referred to simply as the inlet box 11, on which an inlet nozzle 12 is located. This inlet nozzle 12 is connected to an exhaust air hose of a mobile air conditioner or drying device during operation of the exhaust air nozzle 10. Typical exhaust air hoses for this purpose have a diameter in the range of 10-15 cm, to which the outer diameter of the inlet nozzle 12 is adapted.

[0020] Connected to the inlet box 11 of the exhaust air nozzle 10 is an exhaust air duct 13 that projects outward through the window gap. The exhaust air duct 13 has a rectangular cross-section and a thickness of a few centimeters. The exhaust air duct 13 is open on the side opposite the inlet box 11, forming a slot-shaped outlet 14 for the exhaust air. The inlet box 11 and the exhaust air duct 13 are the same width (extension toward the window gap). The width is in the range of a few tens of centimeters. With these dimensions, the exhaust air duct 13 can be easily installed in the window gap typically found in windows of a typical size.

[0021] Details of the construction of the exhaust air nozzle 10 are shown in the two perspective drawings in the Fig. 3 and Fig. 4. The inlet box 11 has a triangular profile in a direction transverse to the airflow, in this case a right-angled triangular profile. The inlet box 11 is thus a prism with triangular base surfaces 114 and a bounding lateral surface formed by a front side 111, a support side 112, and a rear side 113.

[0022] The aforementioned inlet nozzle 12 is centrally located on the front side 111. Perpendicular to the front side 111 is the support side 112, which rests on the top of the tilted window 5 when the exhaust air nozzle 10 is inserted. The support side 112 allows the exhaust air nozzle 10 to be securely placed on the window frame. The flat support across the entire width of the exhaust air nozzle 10 prevents damage to the surface of the sash frame 7.

[0023] Due to the triangular prism shape of the inlet box 11, the rear side 113 opposite the inlet nozzle 12 is arranged at an angle in the air flow of the exhaust air flowing into the inlet nozzle 12. In this way, the exhaust air is directed with low flow resistance toward the adjoining exhaust air duct 13.

[0024] The exhaust air duct 13 has a bottom side 131 and a top side 132 aligned parallel thereto, wherein the top side 132 and the back side 113 of the inlet box 11 lie in one plane and merge seamlessly and straight into one another. The latter is advantageous in terms of aerodynamics and also takes into account the often very tight space conditions between the top side of the casement 7 and the lintel 4. The triangular shape of the inlet box 11 forms an acute angle between the front side 111 and the back side 113, which can be positioned outside the window recess 2 in front of the wall 1 even with a small distance between the casement 7 and the lintel 4. The angle between the front side 111 and the back side 113 is advantageously in the range of 20-50° and particularly preferably in the range of 30-40°, for example 35°.The angle between the support side 112 and the underside 131 of the exhaust air duct 13 is then preferably an obtuse angle in the range of 110-140° and particularly advantageously in the range of 120-130°, for example 125°.

[0025] In one embodiment, the exhaust air duct 13 can be straight up to the outlet 14. In the example shown, however, it is angled approximately in the middle, so that it has two sections 13a, 13b that are within a range of 150-160°, for example 155°, to each other. Due to the angled design of the exhaust air duct 13, the outlet 14 protrudes less far outwards from the building, which reduces the risk of impact in the area of ​​windows close to the ground, for example in basement apartments. In addition, the exhaust air flow is directed less strongly towards a path running in front of the building, which could otherwise be perceived as disruptive. This effect is enhanced by an extension of the upper side 132 in the form of an angled lip 141.

[0026] Finally, the angled design of the exhaust air duct 13 results in a more favorable weight distribution of the exhaust air nozzle 10, which further secures the fit of the exhaust air nozzle 10 on the casement 7, especially when no exhaust air hose is connected. In this case, if the exhaust air duct 13 extends too far outward, the exhaust air nozzle 10 could otherwise tend to slide outward from the edge of the casement.

[0027] Fig. Figure 5 shows an alternative use of the previously described exhaust air nozzle 10, in which the nozzle is inserted with its exhaust air duct 13 into the gap created laterally between the frame 6 and the sash 7 when the window is tilted. Although less preferred, use in this position is also possible with the exhaust air nozzle 10 according to the application. List of reference symbols 1 wall 2 window niches 3 reveal 4 Fall 5 windows 6 frame 7 sash frames 10 exhaust air nozzle 11 Inlet hollow body (inlet box) 111 Front 112 support page 113 Back 114 floor space 12 inlet nozzles 13 Exhaust air duct 131 subpage 132 top 13 a, b Sections of the exhaust air duct 14 Outlet 141 Lippe

Claims

[1] Arrangement of an exhaust air nozzle (10) on a window gap for discharging exhaust air from a mobile air conditioning unit from the window gap, wherein the exhaust air nozzle (10) has an inlet hollow body (11) with an inlet nozzle (12) for connection to an exhaust air hose of the mobile air conditioning unit, and wherein the inlet hollow body (11) is adjoined by an exhaust air duct (13) with a rectangular cross-section, which has an outlet (14) for the exhaust air, characterized byin that the inlet hollow body (11) is a prism with a triangular base area (114) and a lateral surface, wherein the lateral surface has a front side (111) of the inlet hollow body (11), on which the inlet nozzle (12) is arranged, a support side (112) with which the exhaust air nozzle rests on or against a casement (7) of a window (5) and which is arranged perpendicular to the front side (111), and a rear side (113) onto which an air flow entering the inlet nozzle (12) strikes, wherein the rear side (113) merges straight into an upper side (132) of the exhaust air duct (13). [2] Arrangement of an exhaust air nozzle (10) on a window gap for discharging exhaust air from a mobile air conditioning unit from the window gap, wherein the exhaust air nozzle (10) has an inlet hollow body (11) with an inlet nozzle (12) for connection to an exhaust air hose of the mobile air conditioning unit, and wherein the inlet hollow body (11) is followed by an exhaust air duct (13) with a rectangular cross-section, which has an outlet (14) for the exhaust air, characterized byin that the inlet hollow body (11) is a prism with a triangular base area (114) and a lateral surface, wherein the lateral surface has a front side (111) of the inlet hollow body (11), on which the inlet nozzle (12) is arranged, a support side (112) with which the exhaust air nozzle rests on or against a sash (7) of a window (5) and which is arranged perpendicular to the front side (111), and a rear side (113) onto which an air flow entering the inlet nozzle (12) strikes, wherein the support side (112) and the exhaust air duct (13) are at an angle in a range of 110-140° and in particular 120-130° to one another. [3] Arrangement according to claim 1 or 2, wherein the front side (111) and the rear side (113) are arranged at an angle in a range of 20-50° and in particular 30-40° to each other. [4] Arrangement according to one of claims 1 to 3, wherein the exhaust air duct (13) has two sections (13a, 13b) which are aligned at an angle to one another. [5] Arrangement according to claim 4, wherein the sections (13a, 13b) of the exhaust air duct (13) are at an angle in a range of 140-170° and in particular 150-160° to one another. [6] An arrangement according to any one of claims 1 to 5, wherein a protruding and angled lip (141) is formed along the outlet (14). [7] Arrangement according to one of claims 1 to 6, wherein a cross-sectional area of the exhaust air duct (13) is equal to a cross-sectional area of the inlet nozzle (12). [8] Arrangement according to one of claims 1 to 7, wherein the exhaust air nozzle (10) is made of sheet metal.

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