WO2010142910A1

WO2010142910A1 - Spraying device for generating a water jet for washing

Info

Publication number: WO2010142910A1
Application number: PCT/FR2010/051137
Authority: WO
Inventors: Alain Vernet
Original assignee: Alain Vernet
Priority date: 2009-06-12
Filing date: 2010-06-08
Publication date: 2010-12-16
Also published as: FR2946517A1; EP2440713B1; FR2946517B1; EP2440713A1; ES2563173T3

Abstract

A spraying device (1) for generating a water jet for washing the body or a part of the body, including a water inlet (11) connected to a high-pressure water pipe (6) and a water outlet. The device includes at least one nozzle (2) located at the water outlet, and at least one screen (3, 4) spaced apart from the nozzle by a distance d so as to sufficiently reduce the size of the water droplets of said water jet to provide a gentle washing.

Description

SPRAY DEVICE FOR PRODUCING A WATER JET

INTENDED FOR WASHING

The invention relates to a spraying device for producing a water jet which is intended to reduce the consumption of water intended for personal hygiene (showering, washing hands, feet, etc.) with a greater washing power. important and more effective than the traditional shower or hand basin faucet.

For the shower, we spend the water on the body so as to be wet to the maximum and then receive the soap, then perform the rinsing. In the absolute, and if we managed to master the use of water for the action of wet body, it would have to happen that we are perfectly wet before a single drop does not go down the drain. In reality, one must stay two or three minutes before the body is perfectly wet before soaping and 30 or 45 liters of water have gone down the drain, just for this operation. It's huge. My invention is to use and exploit each droplet or water particles to "wash as well using less water".

For this purpose, the invention relates to a spraying device for producing a water jet for washing the body or part of the body, comprising a water inlet connected to a high-pressure water pipe and a water outlet. 'water. According to the invention, it comprises at least one nozzle placed at the outlet of water, and at least one sieve spaced from the nozzle by a distance d so as to refine the water droplets of said jet of water sufficiently small to ensure a gentle wash.

Preferably, the angle of diffusion of the nozzle is adjustable so as to obtain an optimum ratio between the diameter of the water jet and the flow rate. Preferably, the optimum ratio is obtained for a water jet of 1 cm in diameter for a water flow of 1 l / min.

Preferably, the size of the mesh of said at least one screen is 0.5 mm.

Preferably, it comprises a sieve placed at a distance of 2 cm from the outlet of the nozzle.

Preferably, it comprises a first sieve placed at a distance of 2 cm from the exit of the nozzle and a second sieve placed at a distance of 1 cm from the first sieve.

Preferably, the water pressure at the water inlet is between 80 and 130 bar.

The invention also relates to a sanitary installation comprising

- a water inlet connected to a high pressure pump;

the outlet of this high-pressure pump being connected to a high pressure water pipe; the outlet of said pipe being connected to a spraying device as defined above.

Other features and advantages of the invention will emerge from the following description of nonlimiting embodiments, with reference to the figures which represent: FIG. 1 schematically represents a profile view of a spraying device according to FIG. invention;

-Figure 2 schematically shows a top view of a grid; FIG. 3 schematically represents a profile view of a spraying device according to a first embodiment of the invention comprising a grid;

FIG. 4 schematically represents a profile view of a spraying device according to a second embodiment of the invention comprising two grids;

FIG. 5 schematically represents the spraying device of FIG. 4;

FIG. 6 schematically represents an installation according to the invention.

The shower and basin mixer each have a flow rate of approximately 15 liters per minute. It is therefore easy to imagine the quantity of drinking water consumed solely for body hygiene, in France, in the world, per day, per year ... water is an essential part of our life, so you have to save it as much as possible. By consuming less water we therefore reject less sewer and pollution is reduced accordingly.

The spraying device 1 according to the invention uses a low flow of water which is sent by a high-pressure pump 7, so as to obtain a powerful jet of fine droplets, sufficiently fine not to attack the skin and sufficiently concentrated for have a good washing efficiency. From the fillet of water used it is extracted all the particles that constitute it to form, with the high pressure a larger jet of microbeads which propelled at high speed ensure at the time of impact on the skin a wash more effective than the shower traditional. Overall, this device is characterized in that a low water flow (from 0.5 to 3 liters / minute) (washing hands or shower) is propelled at high pressure (> 80 bar) into a device spray to produce a jet of fine drops of water. For the shower, the spraying device 1 uses a nozzle 2 which has an outlet orifice such that at 130 bars of pressure the flow must be: 3 liters per minute and 1.5 liters for handwashing.

The jet forms a solid cone (FIG No. 1); the angle at the top of this cone is about 7 ° or 6 °. At 20 mm from the outlet of the nozzle is a first sieve 3 or stainless steel grid, each mesh screen is 0.5 mm side (FIG No. 2). It has the effect of: a) prohibiting access to the outlet of the nozzle 2 because at this distance the jet is dangerous for the skin, b) to divide, refine and distribute the droplets in the cone thus created ( FIG No. 3). A second sieve 4 is placed a centimeter further, of identical dimensions to the first: it materializes the output of the washing jet. At this point, the droplets are thin enough to ensure a soft effect on the skin. At the outlet of the device 1, the jet has a diameter of 20 to 30 millimeters (FIG No. 4) to reach 150 to 200 millimeters one meter further (Figure 5). It is the angle of the cone that determines the size of the jet as well as its concentration in water particles. After tests, the best ratio between the diameter of the jet and the flow is 1/1 or a jet of one centimeter in diameter for a flow of one liter per minute. All these data are not rigorous. They may vary according to the convenience of each.

For washing hands a flow rate of 1.5 liters per minute is sufficient, the pressure at the inlet of the nozzle is also 120 to 130 bar. The nozzle diffuses a cone full of water particles whose apex angle is 4 ° to 5 ° to form an exit jet of 1.5 centimeters in diameter (FIG. 3).

Two centimeters after the exit of the nozzle a mini grid prohibits access to the hazardous area of the jet and makes it possible to equalize and resize all the microbeads of water (FIG No. 3). Here, compared to the shower system, a single grate is sufficient, the flow of water compared to the shower is twice as low, more the skin of the hands is thicker than that of the rest of the body and one does not feel "tingling" due to the pressure and speed of projection of the water microbeads. This system is particularly effective for washing between the fingers, around and under the nails. These two systems: showering and hand washing are part of a set

5 composed of: a water inlet 11 connected to a softener 8, followed by an instantaneous water heater 9, a high pressure pump 7 actuated by a single-phase electric motor, a shower hose 6 at high pressure and the spraying device described above 1 (FIG. 6). Apart from the spraying device, the rest of these elements are commercially available and are of no interest for a detailed description.

Compared to the traditional shower jet, the size of the jet is a little smaller, the size of the drops is divided by 10, 50, 100. But they are also very fast, it is what allows them to remove the dirt with greater ease. Let's make a comparison between the traditional shower and the high pressure system to evaluate the savings.

If you shower for 10 minutes at 15 liters per minute, it is 150 liters of water that must be heated to 40 °. Assuming that the cold water inlet temperature is 13 ° to heat 150 liters to 40 °, it is necessary to spend 4703w for one hour or 4.7 KWH to pay for the electrical service. For the shower at "high pressure" 3 liters per minute 10 mn = 30 liters of water so an electrical power 5 times greater is: 4700: 5 = 940W to which must be added the power of the pump motor which is 120Ow (snapshot), so brought back to hour: 1200: 6 = 200 WH. So total electric expenditure 940 + 200 = 1140 WH. In summary, for 10 minutes of operation we save: 4700-1140wh = 3560wh or 3.56 KWH and 120 liters of water for the shower system; for washing hands: 4KWH and 135 liters of water. If we calculate the number of shower and handwashing in the year for a family or a single person, the saving is very important. This suggests that many people will be interested in this mode of washing where an economic impact that is likely to be very important.

Claims

A spraying device (1) for producing a water jet for washing the body or part of the body, comprising a water inlet (11) connected to a high pressure water pipe (6) and a water outlet, characterized in that it comprises at least one nozzle (2) placed at the water outlet, and at least one sieve (3, 4) spaced from the nozzle by a distance d so as to refine the droplets of water of said jet of water sufficiently fine to ensure a gentle wash.

2. Device according to claim 1, characterized in that the angle of diffusion of the nozzle is adjustable so as to obtain an optimum ratio between the diameter of the water jet and the flow.

3. Device according to claim 2, characterized in that the optimum ratio is obtained for a water jet of 1 cm in diameter for a water flow of 1 liter / minute.

4. Device according to one of claims 1 to 3, characterized in that the size of the mesh (3, 4) of said at least one screen is 0.5 mm.

5. Device according to one of claims 1 to 4, characterized in that it comprises a sieve placed at a distance of 2 cm from the outlet of the nozzle.

6. Device according to one of claims 1 to 4, characterized in that it comprises a first sieve (3) placed at a distance of 2 cm from the outlet of the nozzle and a second sieve (4) placed at a distance 1 cm from the first sieve.

7. Device according to one of claims 1 to 6, characterized in that the water pressure at the water inlet is between 80 and 130 bar.

8. Sanitary installation (5) comprising:

- a water inlet (11) connected to a high pressure pump (7);

the outlet of this high-pressure pump being connected to a high-pressure water pipe (6);

the outlet of said pipe being connected to a spraying device (1) defined according to one of Claims 1 to 7.