Shaft seal for airtight rotatable guiding of a wave through a wall

Abstract

A climate chamber apparatus for airtight, rotatable guiding a shaft through an opening of a climate chamber wall can include a roller bearing for receiving the shaft and a one-piece seal of an elastic material. The one-piece seal can include a roller-bearing receiving section, with which the roller bearing is connected, a wall receiving section, and a flexible connection section which gaplessly connects the roller-bearing receiving section with the wall receiving section. Further, a climate chamber with a heating chamber wall, a ventilator disposed on the wall, where the ventilator includes a motor, disposed external to the wall and which drives across a shaft, guided through the wall, a fan impeller, wherein the wall includes an opening which is sealed airtight such that the shaft is guided airtight through the wall.

Claims

1-13. (canceled)

14. A climate chamber apparatus, comprising: one-piece seal of an elastic material, wherein the one-piece seal is configured for airtight, rotatable guiding of a shaft through an opening of a climate chamber wall, and wherein the one-piece seal comprises: a roller-bearing receiving section; a roller bearing connected to the roller-bearing receiving section, wherein the roller bearing receives the shaft; a wall receiving section, and a flexible connection section which gaplessly connects the roller-bearing receiving section with the wall receiving section.

15. The climate chamber apparatus as in claim 14, wherein the roller-bearing receiving section is annular.

16. The climate chamber apparatus as in claim 14, wherein a roller bearing facing side face of the roller-bearing receiving section encompasses an outer margin of the roller bearing in the form of a U.

17. The climate chamber apparatus 14, wherein the wall receiving section is annular.

18. The climate chamber apparatus 16, wherein a side of the wall receiving section that faces away from the roller bearing comprises a groove for inserting the outer margin in an opening of the wall.

19. The climate chamber apparatus 14, wherein the wall receiving section, at least in sections, tapers conically.

20. The climate chamber apparatus 14, wherein the roller bearing is clamped with the roller-bearing receiving section.

21. The climate chamber apparatus 14, wherein the flexible connection section, in a non-loaded state, comprises a first segment, which extends offset in an axial direction (A) relative to a second segment of the connection section, and a third segment which connects the first segment with the second segment and bridges an axial offset.

22. The climate chamber apparatus as in claim 21, wherein in the non-loaded state of the flexible connection section, the first segment and the second segment extend substantially in the radial direction and the third segment extends substantially in the axial direction (A).

23. The climate chamber apparatus as in claim 14, wherein the elastic material is silicone.

24. The climate chamber apparatus as in claim 1, wherein the connection section connects to the roller-bearing receiving section at a location offset from exterior and interior ends of the roller-bearing receiving section.

23. The climate chamber apparatus as in claim 21, wherein the wall receiving section is of such length in the axial direction (A) that the wall receiving section projects over the roller-bearing receiving section when the roller-bearing section is displaced, as far as the connection section permits, in the axial direction (A) and/or projects over the roller-bearing receiving section counter to the axial direction (A) when the roller-bearing receiving section is displaced, as far as the connection section permits, counter to the axial direction (A).

23. The climate chamber as in claim 14, further comprising: a ventilator disposed on the climate chamber wall, wherein the ventilator comprises a motor disposed outside of the climate chamber wall and which drives a fan impeller across a shaft guided through the climate chamber wall, wherein the climate chamber wall is sealed airtight with the one-piece seal such that the shaft is guided airtight through the climate chamber wall.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG. 1: in cross section a lead-through inserted as a ventilator shaft seal for a shaft in the state installed in a climate chamber.

DETAILED DESCRIPTION

[0028] FIG. 1 shows a ventilator 10 disposed on a climate chamber of which only a wall 1, the heating chamber wall, is shown, with a motor 11 that drives a fan impeller 13 across a shaft 12 guided through the wall 1. For this purpose the wall 1 comprises an opening that is sealed airtight with a lead-through 100 comprised solely of a roller bearing 110 and a seal 120 such that the shaft 12 is guided airtight through wall 1.

[0029] The seal 120 comprises an annular roller-bearing receiving section 121 that encompasses in the form of a U the outer margin 2 facing it of the roller bearing 110 and in this way clamps the roller bearing 110 tightly.

[0030] The annular roller-bearing receiving section 121 is connected across a flexible, markedly thinner connection section 122 with a wall receiving section 123, also annular in form, which comprises an annular groove into which the inner margin 2, facing the shaft 12, of the opening engages such that it is secured. To facilitate the insertion of the lead-through 100 into the opening the outer side, facing away from the shaft 12, of the wall receiving section 123 tapers conically in the axial direction A.

[0031] In the non-loaded state depicted in FIG. 1 the flexible connection section 122 comprises a first segment 122a, which in the axial direction A extends offset relative to a second segment 122b of the connection section 122, and a third segment 122c which connects the first segment 122a with the second segment 122b and bridges the axial offset. Accordingly, the length of the entire flexible connection section 122 is greater than the distance between the roller-bearing receiving section 121 and the wall receiving section 123 which enables moving the roller-bearing receiving section 121 relative to the wall receiving section 123 and, in this manner, compensating coaxiality and concentricity deviations. In the non-loaded state of the flexible connection section 122 the first segment 122a and the second segment 122b herein extend substantially in the radial direction and the third segment 122c extends substantially in the axial direction A. The wall receiving section 123 is furthermore implemented in the axial direction A of such length that it still projects over the roller-bearing receiving section 121 counter to the axial direction A when the roller-bearing [receiving] section 121, as far as the connection section 122 permits, is displaced counter to the axial direction A and is thereby mechanically protected.

[0032] To guide the shaft 12 rotatable through wall 1 it is received in the roller bearing 110 and connected therewith.

LIST OF REFERENCE SYMBOLS

[0033] 1 Wall [0034] 2 Margin [0035] 10 Ventilator [0036] 11 Motor [0037] 12 Shaft [0038] 13 Fan impeller [0039] 100 Lead-through [0040] 110 Roller bearing [0041] 120 Seal [0042] 121 Roller-bearing receiving section [0043] 122 Connection section [0044] 122a First segment [0045] 122b Second segment [0046] 122c Third segment [0047] 123 Wall receiving section [0048] A Axial direction