WO2009000719A2

WO2009000719A2 - Household device

Info

Publication number: WO2009000719A2
Application number: PCT/EP2008/057683
Authority: WO
Inventors: Hans Gerd Keller; Renate Pradel
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2007-06-25
Filing date: 2008-06-18
Publication date: 2008-12-31
Also published as: EP2160554A2; CN101688732A; DE102007029183A1; WO2009000719A3; RU2009147681A

Abstract

The invention relates to a household device having a ventilator module (10) which is equipped with a support (9) which receives a ventilator (11), wherein a supply circuit (8) which supplies the ventilator (11) is situated in a recess (1) of the support (9).

Description

household appliance

The present invention relates to a household appliance such as a refrigerator or freezer serving as a refrigerator with a housing enclosing an interior and a fan module mounted in the interior. Such a fan module, for example, serve to intensify an air flow over a heat exchanger surface, so as to improve the cooling effect of the heat exchanger, or to equalize the temperature distribution in this by mixing the air of the interior.

In refrigerators with a fan module of conventional design of the fan motor driving fan motor is usually supplied with mains voltage. In this case, no additional supply circuit for the fan is necessary because no transformation of the mains voltage must be made. There are also refrigeration units with fans which are operated via a fan motor connected to low voltage. In such fans, the supply circuit, which includes, inter alia, the transformer, previously placed outside the refrigerated goods.

However, these solutions have disadvantages. In a supply of the fan motor with mains voltage, the energy consumption of the refrigerator is due to the lower

Efficiency of the fan motor higher than with a fan motor, which is operated with low voltage. In order to operate a fan with low voltage motor, a supply circuit must be provided, which is usually housed together with other electronic circuits outside of the cooled interior. The space required for the accommodation of the supply circuit is the

Lost interior, which has the consequence that for refrigeration appliances with the same external dimensions different inner container must be made, depending on whether the fan with

Mains voltage or operated with low voltage. This causes considerable

Extra cost. Although it would be possible to mount a fan with mains voltage motor in an inner container, which is dimensioned for a fan with low-voltage motor, but then remains outside the inner container for the

Supply circuit provided space unused, which is also unsatisfactory. The object of the present invention is to specify a domestic appliance with a fan module which allows the further use of a conventional inner container designed for use with a mains-voltage-fed fan when a fan with a low-voltage motor is installed instead of the mains-voltage-fed fan.

The object is achieved by the features of claim 1. Since the supply circuit is thus combined with the fan in a structural unit, no space for the supply circuit is needed outside of the inner container.

The recording is particularly easy to adapt to different structural conditions and differently structured supply circuits, if this can be mounted on the carrier, i. can be produced and fitted separately from the carrier.

In a domestic appliance, such as a refrigeration appliance with a mains-operated fan, the frame of the fan module according to the invention can be installed on its own, without the housing part. Thus, the space otherwise occupied by the housing part and the supply circuit is available for other purposes, in particular for accommodating refrigerated goods.

Due to the separate placement of the supply circuit are particularly simple and safe, the relevant safety regulations are maintained.

The supply circuit associated with the fan is preferably constructed on a circuit board which is plugged into guide channels formed in the housing part. Thus, the supply circuit can be mounted in a very simple manner on the fan module.

To ensure that the board, which carries the supply circuit has been inserted correctly into the guide channels, or to prevent inadvertent release of the board from the housing part, the board is preferably locked in the housing part. In an advantageous embodiment of this, the board has a recess into which engages in latched position, a detent of the housing part. Thus, the board is automatically fixed when fully inserted.

In a further advantageous embodiment of the invention, the housing part on a supply circuit enclosing shell. The shell increases the shape of the stability of the housing part and protects the supply circuit from the outside against influences.

Preferably, the housing part of the fan module, in which the supply circuit is housed, a grate, a suction or

Blowout opening of the frame covered. Thus, a protection against contact with a rotating fan wheel is ensured by the rust.

In a further advantageous embodiment of the invention, the housing part is held on the frame by at least one hook formed on the shell and at least one hook formed on the grate. The hooks fix the housing part from different sides of the frame and provide a reliable hold.

It is particularly advantageous if the shell and rust are connected by an elastic web. The elastic bridge makes it possible to deform the housing part during assembly so that the two mentioned hooks can be easily brought into their holding position.

In a further embodiment of the invention, said housing part may comprise a filter carrier which carries an air filter which covers an intake or exhaust opening of the frame. The decision as to whether an air filter is mounted in the filter carrier or not can be left to a user of the refrigeration device.

In a further embodiment of the invention, the housing part is held on the frame by at least one hook formed on the shell and at least one hook formed on the filter support. The hooks fix the housing part from different sides of the frame and provide a reliable hold. Again, it is particularly advantageous if shell and filter support are connected by an elastic web. The elastic bridge makes it possible to deform the housing part during assembly so that the two mentioned hooks can be easily brought into their holding position.

In a particularly advantageous embodiment of the invention, the grate is also designed as a filter carrier.

The fan module according to the invention allows the use of a standard axial fan, which is operated with low voltage, and thus a cost-effective production of the module.

Further features and advantages of the invention will become apparent from the following

Description of embodiments with reference to the accompanying figures.

Show it:

Fig. 1 is a perspective view of the housing part, which serves to receive the supply circuit, including serving as Berührschutz for the fan grate, according to the invention, seen obliquely from behind;

Fig. 2 is a perspective view of the power circuit formed on an electronic board;

Fig. 3 is a perspective view of the housing part of FIG. 1 with built-in

Supply circuit, viewed obliquely from behind;

Fig. 4 is a perspective view of the frame carrying the fan to which the housing part containing the supply circuit is mounted, seen obliquely from behind;

5 shows a perspective view of the fan module with the housing part containing the supply circuit, viewed obliquely from the front;

Fig. 6, the fan module of FIG. 5 with a rust-mounted air filter. Fig. 1 shows a perspective view of a housing part 1, which comprises a grate 2 and a shell 3. Grate 2 and shell 3 are connected by a web 4, which may be designed to be elastic in an advantageous embodiment. The shell 3 comprises a front wall 31, a side wall 32, a ceiling 33 and a floor 34. The floor 34 may comprise a plurality of partial surfaces. On a side facing away from the side wall 32 edge of the bottom 34 two substantially parallel to the side wall 32 extending webs 35, 35 'are formed, which form a groove in its center and thus form a guide channel 5. At the edge of the bottom 34, a U-shaped hook 6 is formed, the open end terminates in a locking lug 61. A projecting from an upper edge of the front wall 31 U-profile extends parallel to the guide channel 5 and forms a further guide channel 5 '. From the front wall 31 of the shell 3, a latching finger 36 projects horizontally inwardly into the shell 3. A latching nose of the latching finger 36 faces a plane passing through the two guide channels 5, 5 '. On the grate 2, a clamp 21 is formed on the web 4 opposite side, which protrudes in the direction of the back of the grate 2 on this. The bracket 21 extends in the direction of its rear side upwards in a tip, which carries a latching hook 22. Furthermore, the grate 2 comprises two latching tongues 23 on two horizontally extending webs which project beyond the latter in the direction of the front side of the grate 2.

FIG. 2 shows a perspective view of a supply circuit 8 constructed on a circuit board 7. Such a supply circuit 8 converts an externally supplied AC voltage into a DC voltage. The board 7 has an upper edge 71 and a lower edge 72. Further, the board 7 has a recess 73 which is disposed near the front edge 74 of the board in the lower half. On the surface of the board 7 a plurality of plug contacts 81 are constructed.

FIG. 3 shows a perspective view of the housing part 1 from FIG. 1, in which the supply circuit 8 constructed on the circuit board 7 is mounted. The board 7 is shown from the back. The lower edge 72 of the board 7 is fully inserted into the guide channel 5 at the bottom 34 of the shell 3, and the upper edge 71 of the Board 7 is inserted in parts of its length in the guide channel 5 '. In the recess 73 on the board 7 engages from behind the locking lug (not visible here) of the integrally formed on the inner front wall 31 of the shell 3 locking finger 36 (not visible here). Thus, the board 7 is fixed in the shell 3 by the two guide channels 5, 5 'and the latching fingers 36 and is secured against unintentional withdrawal. The supply circuit 8 is now enclosed on the one hand by the surfaces 31, 32, 33 and 34 of the shell 3 and on the other hand by the circuit board 7.

The illustration in Fig. 4 shows, seen from the rear, a perspective view of a frame 9, on which the housing part 1 is mounted. The frame 9 forms a receptacle for a fan, which is bounded by two side surfaces 91, 91 'and a bottom 92. An upper front bow 93 and a lower rear bow 94 form further limits of the receiving compartment forward and backward. The side surfaces 91, 91 'are continued to the rear by side walls 95, 95', wherein the distance of the side surfaces 91, 91 'from each other is greater than the distance between the side walls 95, 95', so that in each case between side surface 91 and side wall 95th or side surface 91 'and side wall 95' is formed a vertical edge. At the bottom 92 of the receiving compartment is followed by the lower rear tie bow 94, a grid with a plurality of webs 96, which connect the side walls 95 and 95 'on its underside. The latching lug 61 on the hook 34 formed on the bottom 34 of the shell 3 comprises the rearmost web 96 of the frame 9. On the opposite side of the frame 9, the latching hook 22 formed on the grate 2 of the clamp 21 engages in a latching nose 97 integrally formed on the frame 9. In this way, the housing part 1 is stably fixed to the frame 9. By the elastic web 4 (hidden in this view), which connects the grate 2 and the shell 3, in the assembly of the housing part 1 on the frame 9, the grate 2 and the shell 3 are mutually deformed, so that the assembly is facilitated.

Fig. 5 shows a perspective view of the fan module 10, wherein the housing part 1 is mounted on the frame 9 and the frame 9 receives a fan 11, viewed obliquely from the front. The grate 2 covers a of the retaining bow 93, the side surfaces 91, 91 'and the bottom 92 limited intake of the frame 9 for the fan 11 and serves as contact protection for the fan 11. The grid formed by the webs 96 serves as a blow-out opening of the fan module 10.

The lateral positioning of the supply circuit 8 (hidden in this view) enclosing shell 3 on the fan 11 supporting frame 9 in particular has the advantage that the air flow generated by the fan 11 is not hindered.

5, with an air filter 12 attached thereto. The air filter 12 is held by the latching tongues 23, which are integrally formed on the grate 2 and protrude toward the front side out of the grate 2. The grate 2 can thus simultaneously represent a filter carrier. The air filter 12 substantially covers the intake opening of the frame 9 for the fan 1 1 (partially hidden). Depending on the direction of the fan 1 1, the suction port may instead serve as a blowout, so that the air filter 12 then substantially covers the exhaust port.

Due to the lateral arrangement of the supply circuit 8 enclosing shell 3 on the fan module 10, it is possible in a further embodiment of the invention in an advantageous manner, with minor structural changes on the shell 3 opposite side of the fan module 10 to install an additional recording, in which components for another additional functional element can be installed, such as for a temperature controller or for an ionization element for air purification.

Claims

claims

1. Household appliance with a fan module (10) which is equipped with a fan (1 1) receiving carrier (9), characterized in that the fan (1 1) supplying supply circuit (8) in a receptacle (1) of the

Carrier (9) is housed.

2. Household appliance according to claim 1, characterized in that the receptacle as to the carrier (9) mountable housing part (1) is formed.

3. Household appliance according to claim 1 or 2, characterized in that the carrier is designed as a frame (9) and which the housing part (1) on an outer surface of the frame (9) is designed releasably.

4. Household appliance according to claim 1, characterized in that the

Supply circuit (8) on a circuit board (7) is constructed, which in the housing part (1) shaped guide channels (5, 5 ') is inserted.

5. Household appliance according to claim 4, characterized in that the circuit board (7) in the housing part (1) is latched.

6. Household appliance according to one of claims 4 or 5, characterized in that the board (7) has a recess (73) into which engages in latched position a latching finger (36) of the housing part (1).

7. Household appliance according to one of the preceding claims, characterized in that the housing part (1) has a supply circuit (8) enclosing shell (3).

8. Household appliance according to one of the preceding claims, characterized in that the housing part (1) comprises a grate (2) which covers an intake or exhaust opening of the frame (9).

9. Household appliance according to claim 8, characterized in that the housing part (1) on the frame (9) by at least one hook (6) formed on the shell (3) and at least one hook (22) formed on the grate (2) is held.

10. Household appliance according to one of claims 8 or 9, characterized in that shell (3) and grate (2) by an elastic web (4) are connected.

11. Household appliance according to one of the preceding claims, characterized in that the housing part (1) comprises a filter carrier (2) for receiving an air filter (12) which covers an intake or exhaust opening of the frame (9).

12. Household appliance according to claim 10, characterized in that the housing part (1) on the frame (9) by at least one hook (6) formed on the shell (3) and at least one hook (22) formed on the filter support (2) is held.

13. Household appliance according to one of claims 1 1 or 12, characterized in that shell (3) and filter carrier (2) by an elastic web (4) are connected.

14. Household appliance according to one of claims 1 to 13, characterized in that it is designed as a refrigeration device.