VOLATILE SUBSTANCE EVAPORATION DEVICE

Abstract

The volatile substance evaporation device comprises a casing (1) provided with an evaporation surface (2), said casing (1) housing inside it a substrate (3) impregnated with said volatile substances, wherein said substrate (3) is a sheet which preferably comprises a plurality of grooves. It allows the device to have a similar diffusion value for a specific air flow and for a considerable internal temperature of the vehicle, thus ensuring continuous evaporation.

Claims

1. A volatile substance evaporation device, comprising: a casing provided with an evaporation surface, said casing housing inside it a substrate impregnated with volatile substances, wherein said substrate is a sheet.

2. The volatile substance evaporation device according to claim 1, wherein said substrate comprises a plurality of grooves formed therein.

3. The volatile substance evaporation device according to claim 1, wherein said substrate is made of non-woven fabric.

4. The volatile substance evaporation device according to claim 2, wherein said grooves are placed parallel to one another.

5. The volatile substance evaporation device according to claim 2, wherein said grooves include two rows of grooves.

6. The volatile substance evaporation device according to claim 1, wherein said evaporation surface is formed by a grid.

7. The volatile substance evaporation device according to claim 3, wherein a grammage of said non-woven fabric is between 30 and 40 g/m.sup.2.

8. The volatile substance evaporation device according to claim 4, wherein said grooves are placed parallel to one another at a distance between 2.5 and 3 mm.

9. The volatile substance evaporation device according to claim 1, wherein said substrate comprises a first plurality of fixing holes which match a second plurality of fixing holes formed in the casing (1).

10. The volatile substance evaporation device according to claim 1, wherein said casing comprises a fastening clip.

11. The volatile substance evaporation device according to claim 2, wherein said substrate is made of non-woven fabric.

12. The volatile substance evaporation device according to claim 11, wherein a grammage of said non-woven fabric is between 30 and 40 g/m.sup.2.

13. The volatile substance evaporation device according to claim 4, wherein said grooves include two rows of grooves.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to better understand what has been set forth above, several drawings schematically depicting only by way of non-limiting example a practical embodiment are attached.

[0020] FIG. 1 is an exploded perspective view of the volatile substance evaporation device according to the present invention;

[0021] FIG. 2 is a plan view of the substrate impregnated in the volatile substances of the evaporation device according to the present invention; and

[0022] FIG. 3 is a perspective view of the volatile substance evaporation device according to the present invention.

DESCRIPTION OF A PREFERRED EMBODIMENT

[0023] As is shown in the figures, the volatile substance evaporation device according to the present invention comprises a casing 1 provided with an evaporation surface 2, such as for example a grid, and houses in its interior a substrate 3 impregnated in said volatile substances.

[0024] Said casing 1 also preferably comprises a fastening clip 4 to fix the device to a ventilation outlet of a vehicle.

[0025] According to the embodiment shown in FIG. 1, said casing 1 is formed by a front half 11 and a back half 12 which, in their position of use (FIG. 3), are joined together.

[0026] The substrate 3 is in the form a sheet, that is to say, thin and occupying a substantial surface, and is preferably formed of non-woven fabric, of any type known by the person skilled in the art, although it could be made of another material, for example ceramic.

[0027] Said substrate 3 comprises a plurality of grooves 5, i.e. grooves or through-holes which pass through said substrate 3. It should be indicated that, for the sake of simplicity, the grooves 5 of the substrate 3 have only been represented in FIG. 2.

[0028] According to a preferred embodiment shown in FIG. 2, said grooves 5 are arranged parallel to one another and defining two rows of grooves 5, although they could be placed in another suitable manner.

[0029] In order to ensure the correct fixing of the substrate 3 on the casing 1, said substrate 3 comprises a plurality of fixing holes 6 which match fixing holes 7 in the casing 1, for example in the back half 12 of the casing 1, as shown in FIG. 1. In this way, the substrate 3 is fixed in position by means of complementary protrusions (not shown in the figures) of the front half 11 of the casing 1.

[0030] In addition, this fixing system and the grid configuration of the evaporation surface 2 prevents the substrate 3 from rippling due to its thinness when the air flow passes.

[0031] Only as an example, a non-woven substrate 1 with a surface of 2045 mm.sup.2 and a grammage of approximately 35 g/cm.sup.2 can be used, with two parallel rows of grooves 5 with a distance of 2.8 mm between each groove.

[0032] Evaporations of a formulation (for example insecticide and solvents) have been made with a low-volatility component and the following loss values in weight of the substrate 3 are observed, which are very similar under a flow of 1 m/s or statically at a temperature of 45° C.

[0033] It should be indicated that the evaporation of insecticide is maintained in a similar manner in both cases and in the desired range, generating the efficiency required of the product, with a target duration of 320 hours.

[0034] Despite the fact that reference has been made to a specific embodiment of the invention, it is evident for the person skilled in the art that numerous variations and changes may be made to the volatile substance evaporation device described, and that all the aforementioned details may be substituted by other technically equivalent ones, without detracting from the scope of protection defined by the attached claims.