JPH0514104Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a ventilation fan equipped with a heat exchanger.

[Conventional technology]

For example, the conventional ventilation fans shown in Utility Model Publication No. 55-53867 are shown in Figures 4 to 10.
This will be explained using figures.

4 and 5 are a schematic plan view and a schematic side view of the ventilation fan, and FIG. 6 is a side view showing the heat exchanger housing section. In these figures, 1 is a heat exchanger,
2 is a filter arranged on the air intake surface of two adjacent sides of the heat exchanger 1; 3 is a holder that holds the heat exchanger 1; 4 is an outer box that houses the heat exchanger 1, the filter 2, and the holder 3. , 5 is the outer box front plate, 6
is a removable cover for closing a maintenance opening provided on the front panel 5 of the outer box, and the opening is configured such that the heat exchanger 1 and the filter 2 can be taken in and taken out. 7 is a filter guide for supporting the filter 2; 8 is a partition plate provided on the outer box 4; 9 is a holder stopper for fixing the holder 3; 10 is a blower having an electric motor and an impeller for blowing air; 11, 12 indicates the flow of air that exchanges heat.

Then, for maintenance of the heat exchanger 1 and the filter 2, the cover 6 is opened, and the heat exchanger 1 is taken out of the outer case 7 by sliding it against the holder 3 fixed to the outer case 4 via the filter guide 7. It is possible to remove the filter 2 from the outer box 4 by sliding it against the filter guide 7, and by performing the reverse operation, hold the heat exchanger 1 in the holder 3 and remove the filter 2. can be supported by the filter guide 7 and housed in the outer box 4. Furthermore, as shown in FIGS. 7 and 8, the holder 3 attached to the partition plate 8 of the outer box 4 is provided with a protruding piece 8a by cutting and bending the partition plate 8, and fixed by the protruding piece 8a, or As shown in FIGS. 9 and 10, a holder stopper 9, which is a separate component, is welded to the partition plate 8 or the filter guide 7. The holder 3 attached to the outer box 4 may be welded in the same manner as the partition plate 8 shown in FIGS. 7 and 8 described above.

[Problem that the invention attempts to solve]

In the conventional ventilation fans mentioned above, the partition plate and the outer box are separate parts, so cutting, bending and welding increases the number of molds for production, and welding requires separate parts. Since the holder stopper is a small sheet metal product, it is difficult to weld and it is difficult to achieve high dimensional accuracy.

The purpose of this invention is to solve the above-mentioned problems and provide a ventilation fan whose holder can be easily fixed with a small number of molds and with high dimensional accuracy.

[Means for solving problems]

In the ventilation fan according to this invention, the holder is fixed by a fixing part formed on the front panel of the outer box.

[Effect]

As mentioned above, the ventilation fan of this invention utilizes the front panel of the outer box, and the holder is fixed by the fixing part formed on this front panel, so unlike the conventional fan, there are multiple parts such as the outer box, partition plate, etc. There is no need to cut and bend the plate or weld a separate holder stopper, reducing the number of molds for production and improving dimensional accuracy since welding is not performed.

〔Example〕

An embodiment of this invention will be described below with reference to FIGS. 1 to 3.

FIG. 1 is a side view showing the heat exchanger accommodating part, FIG. 2 is a partially enlarged side view showing the holder fixing part, and FIG. 3 is a cross-sectional view taken along the line --. Figures 1 to 3
In the figure, 1 to 12 are parts corresponding to the same reference numerals of the conventional one described above, and 5 is an outer box front plate having openings for maintenance of the heat exchanger 1 and filter 2; Fixing portions 5a are formed around the opening by cutting and bending to the back side, and the holder 3 and the filter guide 7 are fixed to these fixing portions 5a by appropriate means such as clamping. Note that the configuration of this embodiment other than the fixing portions of the holder 3 and filter guide 7 is the same as that of the conventional one described above.

In the above embodiment, fixing parts 5a are provided on all sides of the outer box front plate 5 by cutting and bending, and all (four) holders 3 are fixed with these parts, but how many places are cut and bent? Good too.

[Effect of idea]

As explained above, according to this invention, the holder that holds the heat exchanger is fixed by the fixing part formed on the front panel of the outer box that has the opening for maintenance, so it is possible to Compared to fixing the holder by cutting and bending or welding separate parts, fewer molds are required, there is no need for welding, and the holder can be fixed easily and with high dimensional accuracy. This effect can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a side view of the main parts of a ventilation fan according to an embodiment of this invention, Fig. 2 is a partially enlarged side view showing the holder fixing part, Fig. 3 is a sectional view taken along the line - - of Fig. 2, and Fig. 4. is a schematic plan view of a conventional ventilation fan, Fig. 5 is a schematic side view thereof, Fig. 6 is a side view of the heat exchanger housing part, Fig. 7 is a side view of the holder fixing part of the partition plate, and Fig. 8 is a schematic side view of the conventional ventilation fan. FIG. 7 is a sectional view taken along the - line in FIG. 7, FIG. 9 is a side view of a holder fixing portion formed by a separate member, and FIG. 10 is a sectional view taken along the - line in FIG. 3...Holder, 5...Front plate, 5a...Fixing part, 7...Filter guide In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A ventilation fan characterized in that a holder for holding a heat exchanger inside an outer box is fixed by a fixing part formed on a front panel of the outer box that has an opening for maintenance. . (2) The ventilation fan according to claim 1 of the utility model registration claim, wherein the fixed part is formed around the maintenance opening of the front panel of the outer box.