Device for a hot air shower

[0001] The invention relates to a device for a hair dryer, having a fan and a heater, for generating a central hot-air stream and a concentric cold-air stream at a blower opening.

[0002] A hair dryer of this kind, for instance for drying or otherwise treating hair on the head, is known for instance from German Utility Model DE9001199U1. In it, a concentric cold-air stream from a blower opening of a hair dryer is meant to prevent the scalp from becoming excessively hot from the hot-air stream. A disadvantage here is that the concentric cold-air stream simultaneously strikes the hair on the head as well, which leads to unwanted cooling.

[0003] The object of the invention is therefore to create a device of this same generic type which does not have the aforementioned disadvantages and is simple in construction and can be produced economically.

[0004] This object and others, which will be made more apparent hereinafter, are attained in an air nozzle attachment for a hair dryer having a fan and a heater for producing said device comprising means for generating a central hot-air stream and a concentric cold-air stream at a blower opening.

[0005] According to the invention the air nozzle attachment is connectable to the blower opening and produces a hot-air stream and a cold-air stream from the central hot-air stream and the concentric cold-air stream of the hair dryer at the blower opening the hot-air stream and the cold-air stream produced by the air nozzle attachment are arranged side-by-side, the air nozzle attachment comprises a hot-air nozzle and a cold-air nozzle located side-by-side, the air nozzle attachment, on an end connectable with the blower opening, is provided with a central conduit entrance and a coaxial conduit entrance coaxial to the central conduit entrance, and the central conduit entrance opens into the hot-air nozzle and the coaxial conduit entrance opens into the cold-air nozzle.

[0006] Further advantageous features of the present invention will become apparent from various preferred embodiments described hereinbelow.

[0007] Preferably the air nozzle attachment is connectable to the blower opening by means of a snap-on coupling so that the air nozzle attachment can be again detached. Preferably the air nozzle attachment is axially connectable to the hair dryer at the blower opening so that it can be rotated to any angular position.

[0008] In a preferred embodiment of the present device the air nozzle attachment is made of heat resistant plastic.

[0009] Preferably the outer parts of the hot-air nozzle and the cold-air nozzle have different appearances so that they are easily visually distinguished. For example, an outer section of the hot-air nozzle can have a red color and an outer section of the cold-air nozzle can have a blue color.

[0010] The invention will be described in further detail in terms of an exemplary embodiment.

[0017] FIGS. 1 through 6 show a device 1 for a hair dryer 2, having a fan 3 and a heater 4 for generating a central hot-air stream 5 and a concentric cold-air stream 6 at a blower opening 7, and in the region of the heater 4, the hot-air stream 9 and the cold-air stream 10 are separated by a partition 22. As the device 1, an air nozzle attachment 8 embodied as connectable to the blower opening 7 is provided of a kind such that the air nozzle attachment 8, from the central hot-air stream 5 and the concentric cold-air stream 6 of the hair dryer 2, generates a hot-air stream 9 and a cold-air stream 10 that are located side by side. The air nozzle attachment 8, on the end with the blower opening 7, has a central conduit entrance 11 and a coaxial conduit entrance 12, and the central conduit entrance 11 discharges into a hot-air nozzle 13 and the coaxial conduit entrance 12 discharges into a cold-air nozzle 14, and the hot-air nozzle 13 and the cold-air nozzle 14 are located side by side. The central conduit entrance 11 and the coaxial conduit entrance 12 are joined together by means of connecting struts 24.

[0018] The hot-air nozzle 13 and the cold-air nozzle 14 are each designed as a flat nozzle 15 and are each located with one flat side against one another; the hot-air nozzle 13 and the cold-air nozzle 14 have at least approximately the same blower cross section 16, 17.

[0019] In embodients in which the hot-air nozzle has a smaller blower cross section 16 than the blower cross section 17 of the cold-air nozzle 14, very good cooling of a scalp is attained.

[0020] For practical reasons, the hot-air nozzle 13 and the cold-air nozzle 14 end at the same length.

[0021] Because the air nozzle attachment 8 is embodied as being axially rotatably connectable in the region of the blower opening 7, the air nozzle attachment 8 can be positioned in any angular position, simplifying manipulation of the hair dryer 2 such that areas of the hair on the side of the head, especially, can be treated optimally and in an aimed manner with the air nozzle attachment 8.

[0022] The air nozzle attachment 8 is connectable with the region of the blower opening 7 by means of a snap-on connection 18, which is known per se and not shown in further detail, that can be detached again.

[0023] For reasons of cost, the air nozzle attachment 8 comprises heat-resistant plastic 19.

[0024] For simple visual monitoring of the air nozzle attachment 8 adjusted to a particular angle of rotation, the outer parts of the hot-air nozzle 13 and of the cold-air nozzle 14 are identified visually differently, for instance by providing that the outer part 20 of the hot-air nozzle 13 is identified by a red color, and the outer part 21 of the cold-air nozzle 14 is identified by a blue color.

[0025] FIG. 7 shows a further air nozzle attachment 23, which produces only a hot-air stream 9, 35. Because a hot-air nozzle attachment 23 is provided for the air nozzle attachment 8 for optional use, it is optionally possible to generate solely a hot-air stream 9 with the hair dryer 2. The hot-air stream 9 only is produced by the further air nozzle attachment 23 by closing the blower evening 7 at 33 in FIG. 7 to the concentric cold-air stream 6. Thus only the hot-air stream 9 is allowed to pass through it.

• [0026] 1 Device
• [0027] 2 Hair dryer
• [0028] 3 Fan
• [0029] 4 Heater
• [0030] 5 Central hot-air stream
• [0031] 6 Concentric cold-air stream
• [0032] 7 Blower opening
• [0033] 8 Air nozzle attachment
• [0034] 9 Hot-air stream
• [0035] 10 Cold-air stream
• [0036] 11 Central conduit entrance
• [0037] 12 Coaxial conduit entrance
• [0038] 13 Hot-air nozzle
• [0039] 14 Cold-air nozzle
• [0040] 15 Flat nozzle
• [0041] 16 Blower cross section of hot-air nozzle
• [0042] 17 Blower cross section of cold-air nozzle
• [0043] 18 Snap-on connection
• [0044] 19 Plastic
• [0045] 20 Outer part of hot-air nozzle
• [0046] 21 Outer part of cold-air nozzle
• [0047] 22 Partition
• [0048] 23 Hot-air nozzle attachment
• [0049] 24 Connecting strut