RU2424168C1 - Automatic dual-spraying dispenser - Google Patents

Abstract

FIELD: process engineering. ^ SUBSTANCE: invention relates to automatic dispenser intended for intermittent spraying of some amount of fluid from two aerosol containers. Invention aims at improving aromatisation of ambient air. Proposed automatic dispenser comprises first and second sprayer valves and cam to actuate said valves. Besides, it comprises motor with its drive shaft coupled with said cam to set it running. Note here that said cam is arranged to selectively drive first and second valves. Motor cur in to revolve in one direction, cam may come into activating position to actuate one of sprayer valves. ^ EFFECT: cheap aromatiser with better aromatisation performances. ^ 10 cl, 5 dwg

Description

FIELD OF THE INVENTION

The invention relates to an automatic metering device for periodically spraying a certain amount of liquid from at least two aerosol containers.

Preferably, two aerosol containers contain liquids of various kinds, for example, different flavoring agents or compositions with an active substance, so that one device can alternately spray two or more different substances.

State of the art

Automatic metering devices for periodically spraying liquids are well known. Typically, these devices comprise a single aerosol nozzle for atomizing a first liquid, which is driven by a cam or lever element, which in turn is driven by a DC motor. An electronic timer is connected to the electric motor to actuate the spray valve at predetermined time periods.

Some examples of aerosol dispensing devices are described in the following documents: US 4483466, US 3739944 and US 5249718.

There is a need for more sophisticated devices that provide greater opportunities for flavoring or processing of the surrounding space, but inexpensive to manufacture.

Disclosure of invention

The invention relates to an automatic metering device for spraying, comprising a first spray valve for spraying a liquid and a rotatable cam configured to move from a starting position in which the valve is closed to a first on position in which it actuates the first spray valve beyond account of pressure on him.

The principle of operation of the spray valve is well known to specialists in this field of technology, therefore, there is no need for a detailed explanation for understanding the invention.

The cam is driven by an electric motor connected to an electronic timer including an electric motor.

According to the invention, the device comprises a second spray valve, and the cam is configured to selectively actuate the first and second spray valves due to the action of an electric motor.

To this end, the electric motor is driven by electronic means to change the direction of rotation of the engine so that when the motor shaft rotates in one direction, the cam actuates one of the spray valves, and when the shaft rotates in the other direction, the cam drives the other spray valve .

The metering spray device according to the invention can spray two different liquids alternately at selected time periods, with only one electric motor being used predominantly to reduce the cost of production.

Brief Description of the Drawings

The invention is further described with reference to the attached drawings.

Figure 1 shows a device with a cam in the initial position and with the removed part of the housing, rear view;

figure 2 is a perspective view similar to figure 1, but removed for clarity, all parts of the body;

figure 3 is a device where all parts of the housing are removed, front view;

figure 4 is another perspective view similar to figure 3, which shows the internal elements of the device;

5 is a device with a closed housing, a perspective view from the front.

The implementation of the invention

As shown in FIG. 1, the dispensing metering device in a preferred embodiment of the invention comprises a housing 1 in which two spray valves (not shown) are mounted connected to the first and second containers A and B under pressure.

The first and second containers A and B are held by dome-shaped elements 15 and 16 of the housing 1. In the dome-shaped elements 15 and 16, the first and second levers 11 and 12 are respectively rotatably mounted for acting on the valves to spray a certain amount of fine liquid through aerosol nozzles 13 and 14.

On the inner surface of one of the parts of the housing 1 there is a protruding cylindrical element 23 on which the cam 2 is rotatably mounted. The cam 2 has a T-shape formed by the left shoulder 4, the right shoulder 3 and the central shoulder 5.

The cam 2 is pivotally mounted on the cylindrical element 23, which forms a pivot axis intersecting the longitudinal axis of the central shoulder 5.

Cam 2 is configured to actuate the spray valve of container A or the spray valve of container B.

The DC motor 6 includes a drive shaft 7 kinematically connected to the cam to actuate it so that rotating the shaft 7 in a clockwise direction (FIG. 1) rotates the cam 2 and activates the second lever 12. Rotating the shaft 7 in the counterclockwise direction (Fig. 1), the cam 2 is rotated and the first lever 11 is actuated.

To actuate the spray valves, the free ends of the arms 3 and 4 are in contact with the levers 11 and 12, respectively, which, in turn, press on the spray valves. The levers 11 and 12 convert the rotational movement of the arms 2 and 3, respectively, into the longitudinal movement of the spray valves, avoiding damage to the valves.

The levers 11, 12 have dimensions that allow them to reach the spray valves inside the domed elements 15, 16.

The drive shaft 7 of the electric motor is kinematically connected in a known manner to the central shoulder 5 of the cam 2 by means of lowering gears 8, 9 and 10. To this end, the free end 17 of the central shoulder 5 has a gear shape, and one of the lowering gears engages with it, as shown figure 3.

The device according to the invention contains an electronic board 19 with an electronic timer, equipped with, for example, programmable electronic means that are connected to the terminals of the electric motor 6 to actuate it. The device also contains electronic means connected to the terminals of the motor for changing the direction of rotation of the drive shaft.

In the automatic operation of the device, the electronic means turn on the electric motor at predetermined time periods set by the program so that the electric motor shaft rotates in the required direction to actuate the selected atomizing valve according to the programmed sequence.

In a preferred embodiment of the invention, the two spray valves act alternately to spray two different flavoring substances in the room.

The electronic tool can store various programs that can be selected by the user. In addition, the user can manually specify a command to actuate one of the spray valves.

Due to the T-shape of the cam, the reduction gears and the electric motor can be located in the space available in the container accommodating device, which optimizes the use of volume inside the housing, making it possible to obtain a compact device.

In addition, due to the T-shape of the cam element, the moment applied by lowering gears can be increased without the occurrence of mechanical stresses in the gears.

In a preferred embodiment, the spray valves are metering valves that release a predetermined amount of volatile matter regardless of how long the valve has been actuated by the cam.

Claims (10)

1. Automatic dosing device for double spraying for periodic spraying of liquids, comprising a first valve for spraying the first liquid, a cam mounted rotatably from its initial position to the first activating position, in which it has the ability to actuate the first spray valve, an electric motor, a drive shaft which is kinematically connected with the cam to actuate it, and an electronic timer associated with the electric motor to turn it on, characterized in that it contains a second spray valve, and a cam driven by an electric motor is configured to selectively actuate the first and second spray valves, so that when the motor is turned on in one direction, the cam can be moved to the first activating position, enabling one of spray valves, and when actuating the electric motor in the other direction, it can move to the second activating position, providing e in the action of another atomizing valve. 2. The device according to claim 1, characterized in that it further comprises electronic means connected to the terminals of the motor for alternately changing the direction of rotation of its drive shaft. 3. The device according to any one of claims 1 or 2, characterized in that the cam has a T-shape with left, right and central shoulders and is mounted to rotate around an axis crossing the longitudinal axis of the central shoulder. 4. The device according to claim 3, characterized in that the drive shaft of the electric motor through kinetic gears is kinematically connected with the central cam arm. 5. The device according to claim 4, characterized in that the free end of the Central cam shoulder has a gear shape, and one of the gears engages with it. 6. The device according to claim 3, characterized in that the electric motor, the central shoulder of the cam and lower gears are located in the space available in the device, designed to accommodate containers. 7. A device according to any one of claims 4 or 5, characterized in that the electric motor, the central cam arm and lower gears are located in the space available in the device for the containers. 8. The device according to claim 6, characterized in that the spray valves are connected to containers for liquid. 9. The device according to claim 7, characterized in that the spray valves are connected to containers for liquid. 10. Device according to any one of paragraphs.8 or 9, characterized in that the liquids in the containers have different properties.

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