FI76880C - ANSLUTNINGSORGAN FOER INBLAOSNINGS- ELLER UTBLAOSNINGSORGAN. - Google Patents

Description

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(Fl) (21) Patent application - Patentansökning 800316 (22) Application date - Ansökningsdag 01.02.80

National Board of Patents and Registration (23) Start Date-Giltighetsdag 01.02.80

Patent- och registerstyreleen | 41 ^ Tul) ut jU || <jseksi _ aiivit offemiig 29.04.80 (44) Date of presentation and publication - 31.08.88

Ansökan utlagd och utl.skriften publicerad (86) Kv. Application-Int. ansökan (32) (33) (31) Privilege requested - Begärd priority (71) Haiton Oy, * »7 ** 00 Kausala, Finland-Finland (Fl) (72) Erkki Aalto, Kausala, Arvi Tolmunen, Kausala, Finland Finland (FI) (7 * 0 Forssan & Salomaa Oy (5 * 0 Connection element for supply or exhaust fan -Anslutningsorgan för inbläsnings- elier utbläsningsorgan

The invention relates to a connecting member of an inflating or exhausting member, comprising a body part delimiting the flow channel and provided with a connecting collar, which connecting member comprises an intermediate collar adapted to nest with the body part of the connecting member.

Such connecting members of the supply-in or exhaust-blowing member are used, for example, as a connecting member of the floor-in-blowing-in or exhaust-blowing members. Such connectors are not electrically insulated, as a result of which all electrical sockets in the vicinity of the supply or exhaust fan must be earthed for safety reasons.

The object of the invention is to eliminate the above-mentioned drawback. It is a more detailed object of the invention to provide a connecting member of the supply or exhaust fan member, the structure of which is such that it is not necessary to ground the electrical sockets in the vicinity of the supply or exhaust fan member. Other objects and advantages of the invention will be apparent from the description of the invention.

2,76880

The objects of the invention are achieved by a connecting member of a blow-on or exhaust-blowing member, characterized in that the intermediate collar is formed of a non-conductive material so that the blow-off or blow-off (18) is in contact only from electrically conductive components or soil of a metallic in-blow or exhaust blower member.

According to claim 2, the intermediate collar according to the invention is dimensioned so that the intermediate collar exceeds the extreme dimensions of the blow-in or exhaust blow-off member. According to claim 3, the intermediate collar according to the invention at the same time acts as a fastening part of the blow-in or blow-out member. According to claim A, the intermediate collar according to the invention can be used as a telescopic part between the flap and the blow-out or discharge-blowing member.

Thanks to the flare collar according to the invention, e.g. the non-blowing element of the louvre is electrically isolated from the electrically conductive building parts, in which case the electrical plastic strips in the vicinity of the blowing element need to be earthed for safety reasons. In addition, the use of a flare collar according to the invention is a better solution from the point of view of safety than the previously used earthing of electrical sockets.

For reasons of strength and fire safety, the entire connecting element or grille can be made of non-conductive material.

The invention will be explained in detail with reference to a preferred embodiment of the invention shown in the figures of the accompanying drawing, to which, however, the invention is not intended to be exclusively limited.

Figure 1 shows a front view of a connecting member of a blow-in or blow-out member according to the invention.

Fig. 2 shows a side view of the connecting member according to Fig. 1.

Fig. 3 shows a top view of the connecting member according to Fig. 1.

The connecting member according to the invention is generally indicated in Figure 1 by reference numeral 3 76880. According to Figures 1-3, the connecting member 10 comprises a body part formed by a front plate 11, a rear plate 12, side plates 13 and 14 and a base plate 13. In this embodiment, the connecting element 10 is substantially rectangular in cross-section. The connecting member 10 is provided with a connecting table 16 by means of which the connecting member 10 can be connected to an air conditioning duct. In this embodiment, the connection collar 16 delimits a substantially circular opening 16a through which air flows from the air conditioning duct to the connection member 10.

The connecting member 10 is provided with an intermediate collar 17. The connecting member 10 according to the invention is intended as a connecting member of the supply or exhaust blow member 18. In this embodiment, the blow-in or blow-out member 18 is a grille-like blow-in or blow-out member having a substantially rectangular cross-section. The intermediate collar 17 of the connecting member 10 according to the invention thus acts as a fastening part of the supply or exhaust blow member 18. The intermediate collar 17 can be adjusted in the up-down direction, whereby the intermediate collar 17 can be used as a telescopic part between the connecting member 10 and the blowing-in or out-blowing member 18. The blow-in or blow-out member 18 is preferably provided with a spring device 19, whereby the blow-in or blow-out member 18 is reliably attached to the intermediate collar 17. The intermediate collar 17 according to the invention is dimensioned so that the intermediate collar 17 exceeds the extreme dimensions of the blow-in or blow-out member 18.

In this embodiment, the volume flow control device of the supply or exhaust blow member 18 comprises two control flaps 20, the operation of which is delayed. There is a scale 21 for reading the adjustment position. The connecting element 10 is sound-insulated by means of an insulator 22. As can be seen from Figure 2, a groove is formed between the insulator 22 on the preferably oblique base plate 15 of the connecting member 10 and the front plate 11 of the connecting member 10, whereby the control flaps 20 can be pressed into such a groove. The edge of the adjustment flaps 20 serves as a numerical indicator for determining the adjustment position, since preferably the scale 21 provided with a velcro fastening is placed at the edge of said groove. The adjustment flaps 20 can be easily detached from said groove and pressed again into said groove to provide the desired adjustment position. The edge of the control flaps 20 is preferably rounded on the airflow side through the opening 16a. A strip 23 of suitable metal is preferably printed to protect the edge of the sound insulating material 22. The locking of the strip 23 is indicated by reference numeral 24. As best seen in Figure 2, the mounting groove of the control flaps 20 widens towards the bottom, creating space for debris and other contaminants. The spray of the sound-insulating material 22 holding the control flap 20 «76880 in place is provided by the resilience of the sound-insulating material 22. In Figures 1 and 2, reference numerals 25 denote spot welds by means of which the connection member 10 is brought together.

According to the basic idea of the invention, the intermediate collar 17 is formed of an electrically non-conductive material which electrically insulates the metallic supply-blow or discharge-blowing member from the electrically conductive components or the ground. In this case, for safety reasons, it is not necessary to ground the electrostatic precipitator in the vicinity of the blow-in or blow-out member 18. The use of the flare collar 17 according to the invention is even safer in its solution than the previously used grounding of the electrical plastic strip. Since the intermediate collar 17 made of a non-conductive non-conductive material according to the invention is dimensioned so that the intermediate collar 17 exceeds the extremes of the blow-in or exhaust-blow member 18, such dimensioning ensures good electrical insulation regardless of the installation. At the same time, the intermediate collar 17 acts as a fastening groove for the supply-blow or exhaust-blow member 18, whereby the grille 18 can be fastened without compromising the electrical insulation. Likewise, the flare collar 17 according to the invention can be used as a telescopic part between the connecting member 10 and the blow-in or exhaust-blow member 18.

Only a preferred embodiment of the invention has been described above and it will be apparent to a person skilled in the art that it can be modified in a number of different ways within the scope of the inventive idea set out in the appended claims.

Claims (4)

5,76880 A blow-in or exhaust blower connection member comprising a body portion (11,12,13,14,15) defining a flow passage and provided with an insertion collar (16), and said connection member (10) comprising an intermediate collar (17). ), which is arranged to nest with the body part (11,12,13,14,15) of the molding member (10), characterized in that the flare collar (17) is formed of a non-electrically conductive material so that the blowing in or out blowing member (18) is in contact only to said intermediate collar (17), wherein said flared collar (17) is adapted to electrically insulate the metallic blower or exhaust blower (18) from electrically conductive building components or soil. Connecting element according to Claim 1, characterized in that the electrically insulating flange collar (17) is dimensioned in such a way that the intermediate collar (17) exceeds the extremes of the blow-in or out-blow blow collar (18). Connecting element according to Claim 1 or 2, characterized in that the electrically insulating flange collar (17) at the same time acts as a fastening part for the supply or exhaust blow-off element (18). Connecting member according to Claim 1, 2 or 3, characterized in that the electrically insulating flange collar (17) is movable in the up-down direction in order to change the height position of the connecting member (10).