MXPA97008924A - Double bar sprayer - Google Patents

Abstract

A double-barrel sprayer (2) to apply a diluted product, such as a diluted cleaning solution, to a surface, to clean it, and to eliminate it, by washing, the diluted product from the surface by washing it with a spray with water only. The sprayer (2) may include a perforated petrified plate (50) having one or more holes (52a and 52b) to regulate the water / product mixture ratio, or an insert having conduits therein to thereby provide a ratio product / desired dilution. To provide different sprays for washing water or for diluted product, the sprayer (2) may have a cover with suitably shaped outlet holes. The sprayer (2) includes separate flow conduits for washing only with water (239 and for the diluted product (24).) The flow conduit for the diluted product (24) includes a mixing chamber (28) in which the product The concentrate is siphoned from a container (6) and mixed with the water supplied by a garden hose (4) Before mixing with the water, the concentrated product passes through the insert or perforated plate (50) to provide a ratio Substantially constant water / product with a wide range of water pressures The sprayer (2) has a removable cover (30) that includes an outlet stop, of suitable shape and size, to obtain the desired spray patterns for washing only with water and for the diluted product sprayed from the sprayer (2) A rotary valve 40 allows the selective application of water or diluted product

Description

DOUBLE BARREL SPRAYER FIELD OF THE INVENTION The invention relates, in general, to mixing and dispensing sprinklers, and more particularly, to a sprinkler that is used to mix a concentrated liquid product with water in a preset water / product ratio, and to spray the product diluted on the surface to be treated. The sprayer can also be used to wash only with water to remove the product from the surface.

BACKGROUND OF THE INVENTION In U.S. Patent Nos. 3,201,049; 3,381,899; 5,039,016; 5,100,059; 5,213,265; and 5,383,603 sprinklers are described for mixing and distributing liquids in a carrier fluid such as water. Such sprinkler arrangements generally have an inlet for a hose, such as a garden hose, and an inlet for a siphon tube for removing the product from a container attached to the sprinkler. The complexity of sprinklers varies, and they generally spray a water / product mixture, or only water through a common sprinkler outlet. In addition, in some of the previous inventions, the product to be mixed with water is mixed in an open chamber, exposed to the atmosphere, which results in a fluctuation of the water / product ratio. Another disadvantage of such sprinklers of previous inventions is that sometimes they are not able to send a water / product mixture, or wash only with water, at the necessary distance. In the art there is a need for sprinkler apparatuses for cleaning buildings, which can provide a selective application of a water / product mixture, or of only water for washing, at distances capable of reaching the entire wall surface of a building. two floors, which provide the desired water / product ratio with a wide range of water pressures that residential garden hoses generally have, and / or offer an adaptability to the desired water / product mix ratio and / or to the shape of the spray patterns of the water / product mixture and to the spray patterns of only water to be washed, from the sprayer.

SUMMARY OF THE INVENTION The invention features a portable double-barrel sprayer for applying a diluted liquid product to a surface to be treated. The sprinkler includes a housing having a first inlet and a second inlet, a first and a second outlet, a mixing chamber and a valve. The first inlet is attached to a hose that feeds water to the sprinkler, the second inlet is attached to a container that feeds a concentrated liquid product to the sprinkler, and the chamber is in fluid communication with the first and second inlets, so that the water is mixed with the concentrated liquid product to form a diluted product, feeding water through the first inlet and feeding the concentrated liquid product through the second inlet. The first inlet sprays wash water from the sprayer to allow the removal of the diluted product from the surface to be treated; the second outlet sprinkles the diluted product from the sprayer on the surface to be treated, and the valve selectively feeds the diluted product to the second outlet or feeds only washing water to the first outlet. The sprinkler may include several optional features. For example, the sprinkler may have a siphoning tube that extends into the container of the concentrated liquid product, such that the second inlet is in fluid communication with the siphoning tube. The concentrated product can be removed from the container by feeding water through the mixing chamber and siphoning the concentrated product from the container. The shape of the spray patterns can be controlled by a cover attached to the housing, such that the first outlet of the desired shape of the cover is in fluid communication with the first housing outlet, and the second output of the desired shape of the cover is in fluid communication with the second outlet of the housing. The sprinkler may have an orifice that is in fluid communication with the second inlet and that has one or more ducts to deliver concentrated product to the mixing chamber in a substantially constant water / product ratio. Alternatively, the mixing chamber may be in a housing insert, and the insert may include an inlet conduit that receives water, a supply conduit that receives concentrated liquid product and an outlet conduit where the product and water mix and go to the second exit. The sprayer may include an anti-siphoning device in fluid communication with the first inlet to prevent the concentrated liquid product from leaving the first inlet. The sprinkler valve may be a rotary valve having a cylindrical body and an upper and lower conduit therein. The upper conduit is in fluid communication with the first inlet and the first outlet when the rotary valve is in a first position, and the lower conduit is in fluid communication with the second outlet when the rotary valve is rotated from the first position to the second one. position, in which the upper conduit is not in fluid communication with the first outlet. The housing may include a hole for receiving the cylindrical body of the valve, and the housing may include an upper conduit in fluid communication with the bore and the first outlet, and a lower conduit in fluid communication with the bore and the second outlet. The valve may include a sealing element that is hermetically joined with the upper and lower conduits when the valve is in the disengaged position. The housing may include a cavity in fluid communication with the hole and the first inlet, the valve being able to move from the first position in which the cavity is in fluid communication with only the upper passage, to the second position in which the cavity only It is in fluid communication with the lower conduit. Preferably, the lower conduit has an ascending portion and a descending portion, the second inlet being in fluid communication with the descending portion, and the descending portion having a greater cross section than the ascending portion so that the concentrated liquid product is siphoned towards the descending portion and mix with the water supplied through the rising portion. The water and the concentrated liquid product can be supplied to the sprayer by a water hose and a container of the product, respectively. To join the container, the housing can include a tubular projection and a rotating adapter mounted on the tubular projection, such that the rotating adapter can be attached to the container. To join the hose, the first inlet may have a portion of the internally threaded housing and said internally threaded portion may be connected to a hose by threading the internally threaded portion in an externally threaded portion of the hose. Alternatively, the housing may include a tubular projection and a rotating adapter mounted on the tubular projection, such that the rotating adapter can be attached to one end of the hose. The housing may include a single piece of molded plastic with an upper conduit therethrough in fluid communication with the first outlet, a lower conduit therein in fluid communication with the second outlet, and a mixing chamber located in the second outlet. conduit. The invention also provides a method for applying a diluted liquid product to the surface to be treated by a sprinkler attached to a hose to supply water to the first inlet of the sprinkler, and a container with concentrated liquid product attached to the second inlet of the sprinkler. sprayer. The method consists of spraying water through the first inlet of the sprayer, placing the sprinkler valve in the first position, in which the first inlet is in fluid communication with the first outlet. The method also includes mixing the concentrated liquid product with water to form a diluted product and spraying the diluted product from a second outlet of the sprayer by moving the valve to a second position in which the first inlet is in fluid communication with the second outlet. Preferably, the concentrated liquid product is siphoned from the container and passes through a perforated plate having one or more openings therein, so as to provide a water / product ratio in a substantially constant manner, with different water pressures in the container. the water that is supplied through the inlet, which can fluctuate between 40 and 60 psi. In order to provide the desired spray patterns, the sprinkler may have a cover mounted in the housing, the cover including a first outlet in fluid communication with the first outlet of the housing, and a second outlet in fluid communication with the second outlet of the housing. housing, the first and second outlet of the cover providing different washing spray patterns only with water and the diluted product, respectively. In a preferred embodiment, the concentrated liquid product is a cleaning solution constituted by a concentrated liquid, and the method consists in cleaning an outdoor surface, such as vinyl, by applying the diluted product to the surface, allowing the diluted product to remain in the surface for a certain time and then the diluted product is removed from the surface by washing it with the water sprayed through the first outlet of the sprayer.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a sprayer according to the invention, in a partially exploded cross-sectional view; Figure 2 shows a cross-sectional view of the sprinkler housing shown in Figure 1; Figures 3a to 3c show details of the cover illustrated in Figure 1, wherein Figure 3a shows a transverse longitudinal view of the cover, Figure 3b shows a cross-sectional view taken along line AA of Figure 3 and Figure 3 shows a view from the top of the cover shown in Figure 3a; Figure 4 shows details of the multi-positional valve illustrated in Figure 1; Figures 5a to 5d show details of an anti-siphoning device illustrated in Figure 1, wherein Figure 5 is an axial front view of a cylindrical element, Figure 5b is a cross-sectional side view of the cylindrical element of Figure 5a, Figure 5c is a side view in perspective of the cylindrical element illustrated in Figures 5a to 5b, and Figure 5d is a side view of a conical element which, together with the cylindrical element, forms the anti-siphoning device.

Figures 6a to 6b show details of the sprinkler housing illustrated in Figure 1, Figure 6a shows an axial front view in partial cross section of the housing, and Figure 6b shows a view from the top of the housing; Figures 7a to 7c show details of an embodiment of the sprinkler housing illustrated in Figure 1, Figure 7 shows a cross-sectional view from the top of a pressure adjustable element of the sprinkler pattern, Figure 7b shows a cross-sectional side view of the sprinkler pattern. element illustrated in Figure 7a, and Figure 7c shows a front view of the element shown in Figure 7a. Figures 8a to 8b show details of an embodiment of the perforated plate. Figures 9a to 9b show details of a modification of the sprinkler illustrated in Figure 1.

DETAILED DESCRIPTION OF THE INVENTION According to the invention, an improved sprayer is provided which has improved uniformity of the water / product mixture ratios, the delivery range and / or the different spray patterns for washing only with water or for a water mixture. product. The sprinkler can incorporate a closed venturi system, a distribution mechanism for the perforated plate, an insert with which a mixture is made to the desired ratio, and an outlet for a double chamber to supply only water from an exit hole and product from the other exit hole. The sprinkler may also include a three position valve to supply only water in the first position, a water / product mixture in a second position, and a third position to prevent the product or water from flowing out. As shown in Figure 1, the invention features a sprayer 2 that can be attached to a free end of a hose 4, such as a garden hose. The sprayer can also be attached to a container 6 containing a product such as a concentrated cleaning solution. The concentrated cleaning solution can be a suitable cleaning solution for cleaning vinyl coatings, such as the cleaning solution described in the jointly owned and co-pending US patent application Serial No. 08/383, 769, the memory of which is Incorporates to this document by reference. The product is extracted from the container 6 and mixed with a pressurized liquid as the water supplied by the hose 4. The sprayer 2 includes a first adapter 8 internally threaded to join a threaded end 10 of the hose 4, and a second internally rotatable adapter threaded 12 to connect to a threaded outlet 14 of the container 6. Alternatively, a rotating adapter can be used to join the hose 4 to the sprinkler. In addition, other methods for joining the hose 4 and the container 6 can be replaced by the threaded adapters 8 and 12, for example, snap-fit adapters, compression adapters, etc. According to a preferred embodiment, the sprayer 2 includes a housing 20, a cover 30 and a valve 40. As shown in Figure 2, the housing 20 has a dual outlet arrangement in which the upper outlet 21 is a outlet only for water and the lower outlet 22 is an outlet for diluted product. Also, as shown in Figures 3a to 3c, the cover 30 has an upper outlet 31 only for water and a lower outlet 32 for diluted product. At the upper outlet 31 water is supplied through an upper conduit 23 of the housing 20, and at the lower outlet 32 diluted product is supplied through the lower conduit 24 of the housing 20. With this arrangement, the outlets 31 and 32 can have different shapes and / or sizes to selectively provide the desired spray patterns for water only and diluted product sprayed by the sprayer. For example, by properly choosing the size and / or the shape of the outlet, it is possible to apply the diluted product in a wide range and / or with a moderate impact force on the surface to be coated with the diluted product. On the other hand, since washing with water is only applied through a different outlet, it is possible to apply the washing with water only to the surface with a narrower spray pattern and / or with a higher impact force compared to the Spray pattern of diluted product. With this double outlet arrangement, it is advisable to use a multi-position valve 40, as shown in Figure 4, to selectively apply only water or diluted product to the respective outlets 31 and 32. The valve 40 can be moved to the first, to the second or third position, whereby the outlets 31 and 32 are prevented from spraying only water or diluted product when the valve 40 is in the third position, at the outlet 32 the product is diluted and it is prevented from the outlet 31 only sprinkles water when the valve 40 is in the second position, and at the outlet 31 only water is supplied to it, and the outlet 32 is prevented from spraying diluted product when the valve 40 is in the first position. As shown in Figure 4, the valve 40 includes a cylindrical body 41 having an upper conduit 42 and a lower conduit 43. In order to be able to supply water from the hose 4 to the conduits 42 and 43, the housing 20 includes a cavity 26 that is in fluid communication with the upper and lower conduits 42 and 43. The body 41 is rotatably mounted in the opening 25 of the housing 20, so that the upper conduit 42 supplies water to the upper outlet 31 through of the upper conduit 23 when the valve 40 is in the first position. By turning the valve 40 to the second position, the conduit 42 is prevented, by rotating it, from continuing in fluid communication with the upper conduit 23, and the lower conduit 43 of the body 41 is aligned with the lower conduit 24 so that the product diluted can be supplied to the lower outlet 32. By turning the valve 40 to the third position, the upper conduit 42 ceases to have fluid communication with the upper conduit 23 and the lower conduit 43 no longer has fluid communication with the lower conduit 24.

To prevent leakage, the body 41 has a seal 44 which hermetically connects the conduit entries 23, 24, and an O-ring 45 and an O-ring 46 prevent leakage between the valve 40 and the housing 20. In another preferred embodiment of the invention, the concentrated product of the container 6 is supplied to the lower conduit 24 through a perforated plate 50 which is mounted in tubular projection 27 in the housing 20. In particular, the concentrated product is extracted from the container 6 through the tube 51 , passes through the holes 52a and 52b of the perforated plate 52, through the conduit 28 of the housing 20, and towards the lower conduit 24. As shown in Figure 2, the plate 52 is adjusted without gapping within an opening 29 defined by the tubular projection 29, and a free end of the tube 51 is hermetically joined to the opening 29 in such a way that the plate 52 is located between the tube 51 and the conduit 28. The perforated plate provides to a more uniform and consistent mixture of concentrated product with water within a desired range of water / product mixture ratios (eg, 10 to 30 parts of water and 1 part of concentrated liquid product) in a wide variety of pressures water (for example, 40 to 60 psi), which is what the external water faucets of the houses usually have. According to another embodiment of the invention, the concentrated product is mixed with water in a closed venturi system. The sprayer 2, in particular, compared to the sprinklers of previous inventions using outdoor mixing chambers, achieves the mixing of concentrated product of the container 6 and water of the hose 4 in the lower conduit 24, giving the conduit 24 a ascending portion 24a of small diameter and a descending portion 24b of larger diameter. To improve mixing, the ascending portion 24a may have a non-circular cross section and the descending portion 24b may have a circular cross-section. The conduit 28 is in fluid communication with the descending portion 24b, and. the water that passes under pressure through the riser 24a reduces its pressure in the downcomer 24b, thereby creating a partial vacuum in the area of the conduit 28 and bringing the concentrate product up through the tube 51 and into the downcomer 24b where the concentrated product is completely mixed with the water. According to another embodiment of the invention, the adapter 8 is integrated into the housing 20, for example, the adapter 8 and the housing 20 can be formed in a single piece of injection molded plastic, as shown in Figure 2. In in this case, the housing can be screwed to the hose 4 before the container 6 is placed. For easier positioning of the container 6, the housing 20 can include a tubular projection 60 having an annular depression 61 on the outer periphery thereof. . The adapter 12 is snapped onto the projection 60 by connecting the depression 61 with a suitable matching annular projection (not shown) by means of which the end 14 of the container 6 can be screwed into the adapter 12 by rotating said adapter 12. If As desired, another rotary adapter such as the one used to connect the container 6 can be used to join the hose 4. The sprinkler 2 can have an anti-siphoning device 70 to prevent the concentrated liquid product from leaving the entrance 8 and going to the hose 4. As shown in Figures 5a to 5d, the device 70 includes a cylindrical member 71 having a central conduit 72 therein for sending water to the cavity 26, an O-ring 72 for sealing the periphery exterior of the element 71 with the inner wall of the adapter 8, and the conical element 74 has a conical wall 75 and a central conduit 76 in fluid communication with the conduit 72. The anti- isifonant includes a hinge (not shown) to prevent backflow of fluid in the hose 4. The anti-siphoning device may have other suitable configurations, as those of the type incorporating the vacuum sprinklers made by Hayes Products, or may have a backflow valve as set forth in U.S. Patent No. 2,646,063. As shown in Figures 6a to 6b, the housing 20 includes a snap-fit element 80 that contacts the matching projection 34 of the cover 30 (see Figure 3a). With this arrangement, the cover 30 can be replaced or change to another cover that has outlets 31, 32 of different size and / or shape. Also, the cover 30 may include a baffle for deflecting the wash water or the diluted product that is sprayed from the outlet holes 31 and / or 32. For example, as shown in the dotted line of Figure 3a, the cover 30 may include a baffle 35 for deflecting the spray of diluted product, thus providing a wider spray pattern to be able to spray the diluted product onto nearby horizontal surfaces such as wooden decks, driveways, etc. With the sprayer arrangement described above, it is possible to mix highly concentrated cleaning solutions with the water supplied by a garden hose and to apply the diluted cleaning solution to exterior surfaces such as vinyl coatings of a building. The sprayer can offer a spray pattern one foot wide at a distance of 8 feet. In addition, with a water pressure of 60 psi at the end of the hose, the sprayer can throw the diluted product at heights of 30 feet and provide a wash spraying with water only at such distances. Moreover, the fact of throwing product and water only for washing at the desired distances, such as the upper part of a wall of a 2-story building, can be achieved well while maintaining a water / product mix ratio. substantially constant, for example, a water / product ratio of 20: 1. According to a preferred embodiment of the invention, a water / product mixing ratio of 20: 1 can be achieved if a perforated disk with two holes having diameters of 0.031 inches is used and the lower conduit 24 is configured so that the portion ascending 24a has a diameter of 0.032 inches and the descending portion 24b has a diameter of 0.116 inches. Also the water and the concentrated product are mixed in the descending portion 24b, which has a length of 0.875 inches. The upper conduit 23 for the wash water has a diameter of 0.140 inches. this arrangement was compared to a single-hole arrangement that had a perforated disk with a single 0.042-inch hole. In the following Table 1 the results of the test are exposed.

TABLE 1 As shown in Table 1 above, with the double-orifice arrangement according to the invention it is possible to maintain a desired water / product ratio of about 21 to 22: 1 with a water pressure ranging from 40 to 60 psi , while with a single hole arrangement the water / product ratio varied from approximately 16 to 23: 1 with the same water pressure range. A variation of the cover 30 is illustrated in Figures 7a to 7c. In this embodiment, the outlets 31, 32 of the cover 30 can be omitted and instead of them a single opening 36 can be provided in the cover 30, such as shown in the dotted line of Figure 3b. The opening 36 should be large enough to allow wash water to flow through conduit 23 or for the diluted product to flow through conduit 24a to pass through it. In order to provide the desired spray patterns for washing and the diluted product, respectively, the pressure adjusting element 80 of the spray pattern includes the outlets 31a, 32a, which extend therethrough. The outlet 31a is aligned with the conduit 23, and the outlet 32a is aligned with the conduit 24a when the element 80 is attached to the cover 30. In order to attach the element 80 to the cover 30, the cover 30 has the openings 37. , 38 (as shown in the dotted line of Figure 3c), the element 80 includes the snap fit projections 81, 82 to join the openings 37, 38 thereof. Each of the outlet portions of the outlets 31a, 32a has a rectangular shape as shown in Figure 7c. Each of the outlets 31a, 32a includes a first tapered portion 83 in the form of a V plus a second portion 84 of rectangular shape with a uniform cross section, as shown in Figure 7a. As shown in Figure 7c, the tapered portion 83 is formed by a pair of vertical flat walls converging toward the portion 84 of the uniform cross section. In the embodiment shown, the outlets 31a, 32a have outlet openings in the form of a rectangle, which have a horizontal dimension of 0.092 inches and a vertical dimension of 0.20 inches. The tapered portion 82 has a square-shaped entrance opening with dimensions of 0.20 inches on each side. However, the outlets 31a, 32a may have any suitable size and / or shape. In this way, the arrangement shown in Figures 7a to 7c allows the spray pattern to be easily changed by joining the element 80 having the outlets of desired size and / or shape. As shown in Figures 8a to 8b, the perforated plate 52 can be mounted on the upper end of the tube 51. In this case, the perforated plate 52 can have a single hole 52c extending axially through the projection 53. The projection 53 fits without gapping within the opening of the tube 51 thus allowing an easy mounting of the perforated plate and a simple regulation of the dilution ratio of the product based on the size of the opening 52c. Tube 51 can be a normal submersible tube with an inside diameter of 0.1875 inches and an outside diameter of 0.25 inches. The projection 23 and the perforated plate 52 can be molded as a single piece of plastic or other material having a length of approximately 0.125 inches. With this arrangement, the perforated plate 52 can be located between the tube 51 and the conduit 28 with the tube 51 in sealing contact with the opening 29. The dilution ratios of the product obtainable with the products can be seen in Table 2 below. 52c holes of different sizes. TABLE 2 A modified version of the sprinkler arrangement shown in Figure 1 is illustrated in Figures 9a to 9b, wherein the spray gun 100 includes an insert 110 which provides a desired ratio of the water entering and with the concentrate product., such as a concentrated cleaning solution. The details of the insert are shown in Figures 9c to 9d. The insert 110 includes a depression 112 that receives the upper end of the siphon tube 51 (shown in Figure 1), an inlet conduit 114 for directing water from the riser 24a to the downcomer 24b, an outlet conduit 116 for send the diluted cleaning solution to the descending conduit 24b, and a supply conduit 118 to extract, by suction, the concentrated cleaning solution from the siphoning tube 51 and send it to the outlet 116. The shape and size of the outlet 116, of the inlet 114 and / or conduit 118 can be adjusted relative to each other to achieve dilution of concentrated cleaning solution as desired, with water supplied from conduit 24a.

The insert 110 has a cylindrical shape and is slid into the depression 120 of the spray gun 100 until the insert makes contact with a bearing surface 121. To ensure alignment of the inlet duct 114 and that of the outlet duct 116 with the ducts 24a, 24b, the insert 110 has an axially extending projection 112 that fits into the matching slot 124 of the spray gun. Alternatively, the insert and the coincident depression may have a non-circular shape, such as flat on one side or polygonal shape, etc., in order to keep the flow passages aligned and to dispense with the projection and the groove. According to a preferred embodiment of the insert, the insert 110 has a diameter of 0.375 inches and a length of 0.854 inches. The projection 122 has a width of 0.040 inches, a length of 0.438 inches and is projected 0.0395 inches beyond the outer cylindrical surface of the insert. The feed conduit 118 has a diameter of 0.035 inches, the inlet conduit 114 has a diameter of 0.042 inches and the outlet conduit 116 has a diameter of 0.079 inches. The orifice forming the outlet conduit 116 includes a front face that extends perpendicular to the axis of the hole, whereby the sharp edges 126 are formed. The depression 112 has a diameter dimensioned so as to provide an adjustment without play and with the Siphoning tube 51. To assist the retention of the siphon tube 51 and to provide good seal with it, a rib 128 is provided adjacent the conical inlet portion 130 of the depression 112. If desired, the supply conduit 118 can be aligned with a hole of similar size through the end 132 of the insert 112, but the hole in the end 132 can be eliminated. The front face of the hole forming the outlet conduit 116 is located 0.0075 inches beyond the periphery outside of the supply conduit 118. The outlet conduit 116 and the inlet conduit 114 are axially aligned and the central axis thereof is located 0.160 pu. slides below the upper end 132. To reduce friction during the insertion of the insert 110 in the depression 120 of the spray gun 110, the upper end 132 includes a bevel 134 of 45 degrees, with a width of 0.020 inches, at the outer edge of the same.

Figure 9a shows the insert fitted to the spray gun 100. The depression 120 of the spray gun 100 has a front wall 136 located 0.160 inches above the central axis of the riser 24a, and the upper end 132 of the insert provides a stop that is fits against the front wall 136. As shown in Figure 9a, the inlet duct 114 has a smaller diameter than the outlet duct 116, the outlet duct 116 is smaller in diameter than the riser 24a and the riser duct 24a has a smaller diameter than the down conduit 24b. The supply conduit 118 is of larger diameter than the inlet conduit 114 but smaller than the outlet conduit 116. With this arrangement, the concentrated product mixture takes place in the space where the water supply conduit 114 and the conduit The product supply 118 opens to the outlet conduit 116. The level change between the water supply conduit 114 and the outlet conduit 116 creates a pressure drop that drags the concentrate product through the product supply conduit 118. As shown in FIG. towards the outlet conduit 116. For example, the outlet conduit 116 may have a cross section at least 50% greater than the inlet conduit 114. In the embodiment shown, the water supply conduit 114 has an approximately transverse area 18% of the cross-sectional area of the outlet conduit 116. Such an arrangement creates sufficient siphon effect to bring the concentrated product up through the conduit 118 of product supply, which has a cross-sectional area of approximately 12% of that of the outlet conduit 116. For those who are aware of the technique it will be obvious that alternative arrangements can be put into practice to supply the concentrated product to be mixed with the water . The above dimensions offer an arrangement in which the concentrated cleaning solution can be diluted 75% with water, with a ratio of 3 parts of water to one part of concentrated cleaning solution. For those who have knowledge of the technique, it will be obvious that the previous dimensions of the different conduits can be changed in relation to each one of them, in order to obtain any desirable flow characteristic and / or dilution of the product supplied through tube 51, with which can be obtained water / concentrated product ratios, for example, of 0.5: la200: l. The principles, preferred embodiments and modes of operation of the present invention have been described with the foregoing. However, it should not be construed that the invention is limited to the particularly disclosed embodiments. In this way, it can be considered that the embodiments described above are illustrative and not restrictive, and it will be appreciated that workers who are skilled in the art will be able to make variations to the embodiments without departing from the scope of the present invention as defined in the following claims.

Claims (36)

IT IS CLAIMED:

1. A portable sprayer for applying a diluted product to a surface to be treated, including: a housing having a first and a second inlet, a first and a second outlet, a mixing chamber and a valve; the first inlet supplies water to the sprinkler; the second inlet supplies a concentrated liquid product to the sprayer; the mixing chamber is in fluid communication with the first and second inlets, so that the water mixes with the concentrated liquid product to form a diluted product by feeding water through the first inlet and feeding the concentrated liquid product through the liquid. the second inlet, the housing including a conduit in fluid communication with the first and second inlet and the second outlet including the conduit an ascending portion and a descending portion, the second inlet being in fluid communication with the descending portion, and having the descending portion a cross section greater than the ascending portion, so that the concentrated liquid product is siphoned to the descending portion and mixed with the water supplied through the rising portion to provide the diluted product, the diluted product being transported in the descending portion without be exposed to atmospheric air until the diluted product is sprayed through the second outlet; the first outlet sprays washing water from the sprayer to allow the elimination of diluted product from the surface to be treated; the second outlet sprays the diluted product from the sprayer to a surface to be treated; and the valve can operate to selectively feed the diluted product to the second outlet or to feed wash water to the first outlet or to prevent the wash water from flowing to the first and second outlet.

2. The sprayer of Claim 1, further including a container of the concentrated liquid product, the container being attached to the sprayer, and the sprayer including a siphoning tube extending toward the container, the second inlet being in fluid communication with the sprayer. Siphoning tube, and removing the concentrated liquid product from the container by feeding water through the mixing chamber and siphoning the concentrated liquid product from the container.

3. The sprayer of Claim 1, further including a cover attached to the housing, the cover having a first and a second outlet, the first exit of the cover being in fluid communication with the first outlet of the housing, and the second exit being of the cover in fluid communication with the second exit of the housing.

4. The sprayer of Claim 1, further including a hole in fluid communication with the second inlet, the orifice having a plurality of ducts therein that deliver concentrated liquid product to the mixing chamber in a substantially water / product ratio. constant.

5. The sprayer of Claim 1, which includes an antisiphoning device in fluid communication with the first inlet, the anti-siphoning device preventing the concentrated liquid product from flowing out from the first inlet.

6. The sprayer of Claim 1, wherein the valve is a rotary valve, the rotary valve including a cylindrical body having an upper conduit and a lower conduit therein, the upper conduit being in fluid communication with the first inlet and the first one. outlet when the rotary valve is in a first position, and the lower conduit is in fluid communication with the second outlet when the rotary valve is rotated from the first position to a second position in which the upper conduit is not in fluid communication with the first exit

7. The sprayer of Claim 1, wherein the housing includes a hole, and the valve includes a cylindrical body fitted to the hole of the housing, the housing also having an upper conduit in fluid communication with the first outlet and a lower conduit in communication fluid with the second outlet, the valve having a sealing element that makes hermetically contact with the upper and lower conduit by rotating the valve to the deactivated position.

8. The sprayer of Claim 1, wherein the housing includes an orifice that receives a valve, an upper conduit extending between the orifice and the first outlet, a second conduit extending between the orifice and the second outlet, and a cavity in fluid communication with the orifice and the first inlet, the valve being able to move from a first position, in which the cavity is in fluid communication with only the upper conduit, to a second position in which the cavity is only in fluid communication with the lower conduit.

9. The sprayer of Claim 1, wherein the housing includes a tubular projection and a siphon tube attached to the tubular projection, the housing having a conduit in fluid communication with the siphoning tube and the second outlet.

10. The sprayer of Claim 1, wherein the mixing chamber provides a water / concentrated liquid product ratio of less than 10: 1.

11. The sprayer of Claim 1, further including a tubular projection extending from the housing, and a rotating adapter mounted on the tubular projection, the rotatable adapter being attached to a container for containing the concentrated liquid product.

12. The sprayer of Claim 1, wherein the first inlet has a threaded portion of the housing, the internally threaded portion being connectable to a garden hose by threading the internally threaded portion to an externally threaded portion of the garden hose.

13. The sprayer of Claim 1, further including a tubular projection extending from the housing, and a rotating adapter mounted on the tubular projection, the rotating adapter being connectable to a garden hose to supply water to the first inlet.

14. The sprayer of Claim 1, wherein the housing comprises a molded plastic part having an upper and a lower conduit therein, the upper conduit being in fluid communication with the first outlet, and the lower conduit being in fluid communication. with the second outlet, and the mixing chamber being located in the lower conduit.

15. The sprayer of Claim 3, wherein the cover includes a spray pattern element attached thereto, the spray pattern element being press fit to the cover, the first and second outlet of the cover being located on the cover. Spray pattern element.

16. The sprayer of Claim 1, further comprising a hole in fluid communication with the second inlet, the orifice including a single conduit that delivers concentrated liquid product to the mixing chamber.

17. The sprayer of Claim 2, further comprising a hole in fluid communication with the second inlet, the orifice including a single conduit that supplies concentrated liquid product to the mixing chamber, the orifice including a projection fitted to the siphoning tube. .

18. The sprayer of Claim 1, wherein the mixing chamber is placed in an insert supported by the housing, the insert providing a desired ratio of diluted product, concentrated liquid product / water.

19. The sprayer of Claim 18, wherein the insert is positioned in a depression in the housing, the insert having a supply conduit that is in fluid communication with the second inlet, an inlet conduit in fluid communication with the first inlet and a conduit of outlet in fluid communication with the second inlet, the outlet duct being larger than the inlet duct, and the supply duct being introduced into the outlet duct at a location adjacent to an interconnection between the inlet duct and the outlet duct. departure.

20. The sprayer of Claim 19, wherein the outlet duct has a cross section at least 50% larger than the cross section of the inlet duct.

21. The sprayer of Claim 2, wherein the mixing chamber is placed in an insert supported by the housing, the insert providing the desired diluted product ratio of concentrated liquid product / water, the insert having a depression receiving a free end of the insert. siphoning tube.

22. The sprayer of Claim 21, wherein the insert is positioned in a depression of the housing, the insert having a supply conduit that is in fluid communication with the second inlet, an inlet conduit in fluid communication with the first inlet and a conduit of outlet in fluid communication with the second outlet, the outlet conduit being greater than the inlet conduit, and the supply conduit being introduced into the outlet conduit at a location adjacent to an interconnection between the inlet conduit and the exhaust conduit. departure.

23. The sprayer of Claim 21, wherein the insert includes a suction opening in fluid communication with the second inlet, the suction opening providing concentrated liquid product to the mixing chamber to provide a substantially constant ratio of water / product through the second exit.

24. The sprayer of Claim 21, wherein the insert includes a depression, and a siphon tube is fitted to the depression, the insert having a suction opening in fluid communication with the siphoning tube and the second outlet.

25. The sprayer of Claim 21, wherein the insert provides a diluted product with a water / concentrated liquid product ratio of 0.5: 1 to 200: 1.

26. A method for using a portable double-barrel sprayer to selectively spray water-wash through a first outlet and spray a dilute liquid product through a second outlet, the sprayer having a housing with a first inlet and a second inlet, first outlet and a second outlet, a mixing chamber and a valve; the first inlet being joined to a water hose that supplies water to the sprinkler; the second inlet being joined to a container that supplies a concentrated liquid product to the sprayer; the mixing chamber being in fluid communication with the first and second inlets, so that the water is mixed with the concentrated liquid product, to form a diluted product, feeding water through the first inlet and feeding the concentrated liquid product through the second inlet, the housing including a conduit in fluid communication with the first inlet and the second inlet and the second outlet, the conduit having an ascending portion and a descending portion, the second inlet being in fluid communication with the descending portion , and the descending portion having a cross section greater than the ascending portion, such that the concentrated liquid product is siphoned to the descending portion and mixed with the water supplied through the rising portion to supply the diluted product, being transported the product diluted by the descending portion without being exposed to the air atmo spherical until the diluted product is sprayed through the second outlet; spraying the first washing water outlet from the sprayer to allow the removal of diluted product from a surface to be treated; by spraying the second outlet the diluted product from the sprayer to a surface to be treated; and the valve can be operated to selectively feed the diluted product to the second outlet or to feed the washing water to the first outlet, or to prevent the washing water from flowing to the first outlet and the second exit, mixing the liquid product with water concentrate to form a diluted product and spray the diluted product on a surface to be treated, spraying the diluted product through the second outlet of the sprayer by moving the valve to a position where the first inlet and the second inlet remain in fluid communication with the second entry; Y removing the diluted product from the surface by spraying wash water only on the surface, spraying the wash water only through the first outlet of the sprayer by moving the valve to a position where the first inlet is in fluid communication with the first departure.

27. The method of Claim 26, wherein the concentrated liquid product is siphoned from the container and passes through a perforated insert or plate having one or more openings therein which provide a substantially constant water / product ratio with variations of water pressure, in the water supplied through the inlet, which fluctuate between 40 and 60 psi.

28. The method of Claim 26, wherein the sprinkler includes a housing having a first conduit and a second conduit, the first conduit being in fluid communication with the first outlet and the first inlet, the second conduit being in fluid communication with the second conduit. outlet and the first inlet and the second inlet, the mixture being transported by the second conduit and the water being supplied only for washing through the first conduit.

29. The method of Claim 26, wherein the sprinkler includes a housing having therein the first outlet and the second exit, and a housing mounted on the housing, the housing having a first outlet in fluid communication with the first outlet of the housing. and a second outlet in fluid communication with the second outlet of the housing, the first and second outlet of the cover providing different patterns of water spray for washing only and diluted product, respectively.

30. The method of Claim 26, wherein the valve includes a first conduit and a second conduit therein, the first conduit being in fluid communication with the first inlet and the first outlet when the valve is in the first position, and the second conduit in fluid communication with the first inlet and the second outlet when the valve is in the second position.

31. The method of Claim 26, wherein the concentrated liquid product is constituted by a concentrated liquid cleaning solution, including the method of removing mold, moisture stains, algae and / or stains from an exterior surface, by applying the diluted liquid product to an outer surface, allowing the diluted liquid product to remain on the outer surface for a period of time and then washing the diluted product from the outer surface by spraying water through the first outlet of the sprayer.

32. The method of Claim 26, wherein the concentrated liquid product is siphoned from the container and passed through a perforated insert or plate having a single opening therein.

33. The method of Claim 29, wherein the housing includes a removable spray pattern, and the first and second inlets are in the spray pattern.

34. The method of Claim 26, wherein the sprinkler includes a housing having therein a first and a second outlet, plus a cover mounted on the housing, the cover having a first outlet in fluid communication with the first outlet of the housing, and a second outlet in fluid communication with the second outlet of the housing, and both the first outlet and the second exit of the cover have a tapered portion that receives the diluted product or water only for washing sprayed through the first and second departure from the accommodation.

35. The method of Claim 26, wherein the mixing chamber is located in an insert supported by the housing, the insert providing the desired ratio of diluted product of concentrated liquid product / water, the insert including a supply conduit in fluid communication with the second inlet, an inlet conduit in fluid communication with the first inlet and an outlet conduit in fluid communication with the second outlet, the outlet conduit being larger than the inlet conduit, and the supply conduit being introduced into the outlet conduit at a location adjacent to an interconnection between the inlet conduit and the outlet conduit, the mixture being extracted by the flow of water. Liquid product concentrated through the supply conduit, and flowing the water through the inlet conduit, so that the concentrated liquid product is mixed with the water in the outlet conduit.

36. The method of Claim 35, wherein the insert provides a diluted product with a water / concentrated liquid product ratio of 0.5: 1 to 200: 1. SUMMARY A double-barrel sprayer (2) to apply a diluted product, such as a diluted cleaning solution, to a surface, to clean it, and to eliminate, washing, the diluted product from the surface by washing it by spraying with water only. The sprayer (2) may include a press-fitted perforated plate (50) having one or more holes (52a and 52b) for regulating the water / product mixture ratio, or an insert having conduits therein to thereby provide a desired product / dilution ratio. To provide the different spray patterns for the wash water or for diluted product, the sprayer (2) may have a cover with suitably shaped outlet holes. The sprayer (2) includes separate flow conduits for washing only with water (23) and for the diluted product (24). The flow conduit for the diluted product (24) includes a mixing chamber (28) in which the concentrated product is siphoned from a container (6) and mixed with the water supplied by a garden hose (4). Before mixing with water, the concentrated product passes through the insert or perforated plate (50) to provide a substantially constant water / product ratio with a wide range of water pressures. The sprayer (2) has a removable cover (30) that includes an outlet stop, of suitable shape and size, to obtain the desired spray patterns for washing only with water and for the diluted product sprayed from the sprayer ( 2) . A rotary valve 40 allows the selective application of water or diluted product.