Foam spraying device and foam spraying system

Abstract

The present invention provides a foam spraying device and foam spraying system for cleaning floors in kitchens and other areas by spraying foam. [Solution] The foam spraying device 100 consists of a main body comprising a foam supply unit, an air supply unit, and a water supply unit, and a pipe 1 that generates and sprays foam. When foam is formed in the middle of the pipe 1, the foam supply unit is located inside the pipe or in the middle of the pipe 1, and the main body consists of an air supply unit and a water supply unit. The pipe has a structure in which the inside is divided into multiple sections in one direction, and in the cross-sectional shape, the length in the vertical direction is greater than the length in the horizontal direction, and one of the foam supply unit, air supply unit, or water supply unit is connected to each divided pipe. Conventionally, because it was necessary to arrange pipes with a circular cross-sectional shape in a complex manner, there was a concern that they would have a certain thickness when installed on a wall and would get in the way when installing kitchen equipment.

Description

Technical Field

[0001] The present invention relates to a foaming spraying device and a foaming spraying system for spraying foam on the floor surface in a kitchen or the like for cleaning.

Background Art

[0002] Conventionally, a foaming system as described in Patent Document 1 has been known. This foaming system includes a plurality of foam generators, a foaming liquid supply means for supplying an aqueous surfactant solution foamed by the plurality of foam generators to the floor surface, a liquid supply pipe for supplying the aqueous surfactant solution to the plurality of foam means, an air supply pipe for supplying gas to the plurality of foam means, and a liquid supply pipe for supplying water to the floor surface, and has a configuration having a plurality of pipe-shaped members (split pipes) provided corresponding to the plurality of foam generators.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above conventional foaming system, since it is necessary to arrange pipes with a circular cross-sectional shape in a complicated manner, it has a certain thickness when installed on the wall surface, which becomes an obstacle when installing kitchen equipment. In addition, since it becomes a complicated and intricate structure, there is a problem that it is difficult to clean the pipes themselves. The present invention has been made to solve such problems.

Means for Solving the Problems

[0005] This invention relates to a foam spraying device comprising a main body having one of a foam supply unit, an air supply unit, or a water supply unit, and piping for generating and spraying foam. The piping has a structure in which the inside is divided into multiple sections in one direction, with the length in the vertical direction being greater than the length in the horizontal direction, and one of the foam supply unit, air supply unit, or water supply unit is connected to each divided pipe.

[0006] Furthermore, this invention is a foam spraying system characterized by comprising the foam spraying device described above, a controller for controlling it, and a camera for acquiring images of the area to be washed. [Brief explanation of the drawing]

[0007] [Figure 1] This is a diagram showing a foam spraying device according to Embodiment 1 of the present invention. [Figure 2] This is a cross-sectional view of the piping of the foam spraying device according to the present invention. [Figure 3] This is a diagram showing a foam spraying device according to Embodiment 2 of the present invention. [Figure 4] This is a cross-sectional view of the scraper that makes up the foam spraying device. [Figure 5] This is a cross-sectional view showing a modified version of the scraper shown in Figure 4. [Figure 6] This is a diagram showing a foam spraying device according to a modified example of Embodiment 2 of the present invention. [Figure 7] Figure 6 is a cross-sectional view of the scraper of the foam spraying device. [Figure 8] This is a diagram showing a foam spraying device according to Embodiment 3 of the present invention. [Figure 9] This is a cross-sectional view showing the configuration near the piping. [Figure 10] This is a cross-sectional view showing the configuration near the piping. [Figure 11] This is a cross-sectional view showing the configuration near the piping. [Figure 12] This is a cross-sectional view showing a modified example of the foam supply unit. [Figure 13] This is a perspective view showing a modified example of the foam supply unit. [Figure 14] It is a configuration diagram showing a foam spraying device according to Embodiment 4 of the present invention. [Figure 15] It is a configuration diagram showing a modified example of the foam spraying device according to Embodiment 4 of the present invention. [Figure 16] It is a configuration diagram showing a modified example of the foam spraying device according to Embodiment 4 of the present invention. [Figure 17] It is a cross-sectional view of the pipe shown in FIG. 16. [Figure 18] It is a configuration diagram showing a modified example of the foam spraying device according to Embodiment 4 of the present invention. [Figure 19] It is a configuration diagram showing a foam spraying system according to Embodiment 5 of the present invention. [Figure 20] It is an explanatory diagram showing the determination process for pests and the like. [Figure 21] It is an explanatory diagram showing the determination process for dirt and the like. [Figure 22] It is a configuration diagram showing a foam spraying system according to Embodiment 6 of the present invention. [Figure 23] It is a configuration diagram showing a modified example of the foam spraying system according to Embodiment 6 of the present invention. [Figure 24] It is a configuration diagram showing an antifoaming robot according to Embodiment 7 of the present invention. [Figure 25] It is a configuration diagram showing a modified example of the antifoaming robot according to Embodiment 7 of the present invention. [Figure 26] It is an explanatory diagram showing an example of the path generated by the antifoaming robot. [Figure 27] It is a configuration diagram showing a foam spraying device according to Embodiment 8 of the present invention.

Mode for Carrying Out the Invention

[0008] (Basic Embodiment) Figure 1 is a diagram showing the configuration of a foam spraying device according to Embodiment 1 of the present invention. This foam spraying device 100 consists of a main body comprising a foam supply unit, an air supply unit, and a water supply unit, and a pipe 1 for generating and spraying foam. When foam is formed in the middle of the pipe 1, the foam supply unit is located inside the pipe or in the middle of the pipe 1, and the main body consists of an air supply unit and a water supply unit.

[0009] The main unit is connected to a controller, which is equipped with a dirt detection unit and other components described later. Furthermore, various sensors, lights, cameras, etc., are connected to it. Finally, it is connected to a network.

[0010] (Embodiment 1) Figure 2 is a cross-sectional view of the piping of the foam spraying device according to the present invention. The piping shown in the figure can be manufactured by extrusion molding. For example, in the foam spraying device 100 described above, the piping 1 shown in Figure (a) has a semi-circular cross-section. With this cross-sectional shape, the entire piping can be made thin, so when the piping is laid on the wall surface 2, it does not interfere with kitchen equipment such as sinks. The piping 1 is divided into three sections vertically, with foam supplied to the upper section 1a, air supplied to the middle section 1b, and water containing detergent supplied to the lower section 1c. The foam is generated from air and water. Although the overall shape is semi-circular, the thickness can be made even thinner. Making the piping thinner in this way increases the flexibility of the installation location.

[0011] Furthermore, compared to the case where three circular pipes are connected in series, the surface shape is smoother. That is, it becomes a smooth surface without irregularities. Therefore, it is easier to wipe away dirt and other debris, making cleaning easier. In addition, liquids slide off the surface easily, making it difficult for dirt to adhere. Moreover, multiple holes 3 for spraying foam are provided at the top of pipe 1. The diameter and shape of these holes 3 are adjusted so that the foam is sprayed out with a predetermined force. Furthermore, by providing the foam-spraying holes 3 at the top 1a, the surface of pipe 1 is also cleaned by the foam.

[0012] The flat portion is attached in contact with the wall surface 2 on which the pipe 1 is placed. Furthermore, the upper end of the pipe 1 is positioned in a curved or curved slope relative to the wall surface 2, so that the wall surface 2 and the pipe surface are smoothly continuous, making it easier for liquid that has traveled along the wall surface 2 to flow downward along the surface of the pipe 1. Similarly, the lower end is also positioned in a curved or curved slope relative to the wall surface 2, so that the wall surface 2 and the pipe surface are smoothly continuous, making it easier for liquid to flow downward from the surface of the pipe 1 along the wall surface 2.

[0013] Next, the pipe 1 shown in Figure (b) has a triangular cross-section. With this cross-sectional shape, the entire pipe 1 can be made thin, so when the pipe 1 is laid on the wall surface 2, it does not interfere with kitchen equipment such as sinks. The pipe 1 is divided into three sections vertically, with foam supplied to the upper section 1a, air supplied to the middle section 1b, and water containing detergent supplied to the lower section 1c. The foam is generated from air and water. Although the overall shape is triangular, the thickness can be made even thinner. Making the pipe 1 thin in this way increases the flexibility of the installation location. The peaks of the triangular shape may also be curved (not shown).

[0014] Furthermore, compared to the case where three circular pipes 1 are connected in series, the surface shape is smoother. That is, it becomes a smooth surface without irregularities. Therefore, it is easier to wipe away dirt and other debris, making cleaning easier. In addition, liquids slide off the surface easily, making it difficult for dirt to adhere. Moreover, multiple holes 3 for spraying foam are provided in the upper part 1a of pipe 1. The diameter and shape of these holes 3 are adjusted so that the foam is sprayed out with a predetermined force. Furthermore, by providing foam-spraying holes in the upper part 1a, the surface of pipe 1 is also cleaned by the foam.

[0015] The flat portion is attached in contact with the wall surface 2 on which the pipe 1 is placed. Furthermore, the upper end of the pipe 1 is positioned at an angle to the wall surface 2, and the shape is such that the wall surface 2 and the surface of the pipe 1 are smoothly continuous, so that liquid that has traveled along the wall surface 2 can easily flow downward along the surface of the pipe 1. Similarly, the lower end is also positioned at an angle to the wall surface 2, and the shape is such that the wall surface 2 and the surface of the pipe 1 are smoothly continuous, so that liquid can easily flow downward from the surface of the pipe 1 along the wall surface 2.

[0016] Alternatively, as shown in Figure (c), a mountain shape is also acceptable. This has almost the same effect as the triangular shape, but because the slope has a gently curving surface and the top is curved, the liquid flow on the surface of pipe 1 is improved. The other configurations are the same as those in Figure (b).

[0017] In the pipe 1 shown in Figure (d), the cross-section is roughly rectangular in shape, or a rectangle where the longer side is between three and fifteen times the shorter side. With this cross-sectional shape, the entire pipe 1 can be made thin, so when the pipe 1 is laid on the wall surface 2, it does not interfere with kitchen equipment such as sinks. The pipe 1 is divided into three sections vertically, with foam supplied to the upper section 1a, air supplied to the middle section 1b, and water containing detergent supplied to the lower section 1c. The foam is generated from air and water. Although the overall shape is semi-circular, the thickness can be made even thinner. Making the pipe 1 thin in this way increases the flexibility of its installation location.

[0018] Furthermore, compared to the case where three circular pipes 1 are connected in series, the surface shape is smoother. That is, it becomes a smooth surface without irregularities. Therefore, it is easier to wipe away dirt and other debris, making cleaning easier. In addition, since liquids slide off the surface easily, dirt is less likely to adhere. Moreover, the upper part 1a of pipe 1 is provided with multiple holes for spraying foam. The diameter and shape of these holes are adjusted so that the foam is sprayed with a predetermined force. Furthermore, the lower part 1c of pipe 1 is provided with multiple holes 4 for spraying water.

[0019] The flat (back) portion is attached in contact with the wall surface 2 where the piping 1 is placed. As described above, this cross-sectional shape allows for a thinner design than a roughly triangular one for the same cross-sectional area. Also, because it is flat, it is easier to integrate with kitchen equipment.

[0020] Next, we show a configuration in which foam ejection holes 3 are provided on the upper and lower sides. As shown in Figure 2(e), the pipe 1 is configured such that the upper part 1a and lower part d, which constitute the pipe in the vertical direction, are connected to form an upper and lower part 1e, and air and water are supplied to the middle upper part 1b and middle lower part 1c. Foam is supplied to the upper and lower part 1e. The cross-section is semi-circular. With this cross-sectional shape, the entire pipe 1 can be made thin, so when the pipe 1 is laid on the wall surface 2, it does not interfere with kitchen equipment such as sinks. The pipe 1 is divided into three parts in the vertical direction, with foam supplied to the upper and lower part 1e, air supplied to the central part 1b, and water containing detergent supplied to the lower part 1c. Foam is generated from air and water. Although the overall shape is semi-circular, the thickness can be made even thinner. Making the pipe 1 thin in this way increases the flexibility of the installation location.

[0021] Furthermore, compared to the case where three circular pipes are connected in series, the surface shape is smoother. That is, it becomes a smooth surface without bumps or irregularities. Therefore, it is easier to wipe away dirt and other debris, making cleaning easier. In addition, liquids slide off the surface easily, making it difficult for dirt to adhere.

[0022] Furthermore, multiple holes 3 for spraying foam are provided on the upper and lower sides of the upper and lower parts 1e of the pipe 1. The diameter and shape of these holes 3 are adjusted so that the foam is sprayed out with a predetermined force. In addition, by providing foam-spraying holes 3 on the upper side of the upper and lower parts 1e, the surface of the pipe 1 is also cleaned with foam. Moreover, by providing holes 3 on the lower side, the foam can be efficiently sprayed down to just below the wall surface 2. Also, when spraying water during rinsing, it can flow near the area just below the wall surface 2.

[0023] Since the upper and lower sections 1e are connected on the opposite side of the curved surface, the same effect as connecting four regular pipes 1 can be achieved. In other words, when supplying foam to this pipe 1, it is only necessary to supply it to a portion of the upper and lower sections 1e, making the piping work during installation easier.

[0024] The flat portion on the back is attached in contact with the wall surface 2 on which the pipe 1 is placed. Furthermore, the upper end of the pipe 1 is positioned in a curved or curved slope relative to the wall surface 2, so that the wall surface 2 and the surface of the pipe 1 are smoothly continuous, making it easier for liquid that has traveled along the wall surface 2 to flow downward along the surface of the pipe 1. Similarly, the lower end is also positioned in a curved or curved slope relative to the wall surface 2, so that the wall surface 2 and the surface of the pipe 1 are smoothly continuous, making it easier for liquid to flow downward from the surface of the pipe 1 along the wall surface 2.

[0025] Furthermore, as shown in Figure (f), the cross-sectional shape of the pipe 1 shown in (e) above may be made approximately trapezoidal (a semi-circular shape with a flattened top). In this case, the thickness can be made relatively thin. In addition, the surface becomes flat, making it easier to clean. The other configurations and functions / effects are the same as those of pipe 1 shown in (e).

[0026] Furthermore, as shown in Figure (g), the cross-sectional shape of the pipe 1 may be a right triangle with the longer side being the surface in contact with the wall 2. In this case as well, holes 3 for ejecting bubbles are provided at the upper and lower parts 1e. The effects of this configuration are the same as those of the pipe 1 shown in Figure (e) above, but because the upper slope is wider, the bubbles ejected from the upper holes 3 flow more easily downwards. In this configuration as well, the top may be a small curved surface.

[0027] The pipe 1 shown in Figure (h) has a right-angled triangular cross-section, with its middle side in contact with the wall surface 2. In this case, the lower surface is approximately perpendicular to the wall surface 2, and the foam ejection hole 3 is located on this surface. As a result, the foam is ejected downwards, making it possible to clean another pipe 1 installed on the wall surface 2. Other effects and benefits are the same as those of pipe 1 shown in (e) to (g) above.

[0028] Next, as shown in Figure (i), the cross-sectional shape of pipe 1 is approximately trapezoidal. With this cross-sectional shape, the entire pipe 1 can be made thin, so when pipe 1 is laid on the wall surface 2, it does not interfere with kitchen equipment such as sinks. Pipe 1 is divided into three sections vertically, and the internal shape of the pipe is circular. Foam is supplied to the upper part 1a, air to the central part 1b, and water containing detergent is supplied to the lower part 1c. Foam is generated from air and water. Making pipe 1 thin in this way increases the flexibility of its installation location.

[0029] Furthermore, compared to the case where three circular pipes 1 are connected in series, the surface shape is smoother. That is, it becomes a smooth surface without irregularities. Therefore, it is easier to wipe away dirt and other debris, making cleaning easier. In addition, liquids slide off the surface easily, making it difficult for dirt to adhere. Moreover, multiple holes 3 for spraying foam are provided in the upper part 1a of pipe 1. The diameter and shape of these holes 3 are adjusted so that the foam is sprayed out with a predetermined force. Furthermore, by providing the foam-spraying holes 3 in the upper part 1a, the surface of pipe 1 is also cleaned by the foam.

[0030] The flat portion is attached in contact with the wall surface 2 on which the pipe 1 is placed. Furthermore, the upper end of the pipe 1 is positioned in a curved or curved slope relative to the wall surface 2, so that the wall surface 2 and the surface of the pipe 1 are smoothly continuous, making it easier for liquid that has traveled along the wall surface 2 to flow downward along the surface of the pipe 1. Similarly, the lower end is also positioned in a curved or curved slope relative to the wall surface 2, so that the wall surface 2 and the surface of the pipe 1 are smoothly continuous, making it easier for liquid to flow downward from the surface of the pipe 1 along the wall surface 2. In addition, because the shape of the inside of the pipe is circular, it is easy to connect to standard parts at the end. For example, standard elbows can be connected directly.

[0031] The cross-sectional shape of the following pipe 1 is a right triangle, as shown in Figure (j). The shorter side is in contact with the floor surface 5, and the middle side, which is perpendicular to the floor surface 5, is in contact with the wall surface 2. This pipe 1 has a relief section 6 at the lower part 1c where it contacts the wall surface 2. This is to avoid the baseboard installed at the corner between the floor surface 5 and the wall surface 2, and to make surface contact with both the wall surface 2 and the floor surface 5.

[0032] With this cross-sectional shape, the entire pipe can be made thin, so when pipe 1 is laid on wall surface 2, it does not interfere with kitchen equipment such as sinks. Also, since pipe 1 can be installed in the corner between floor surface 5 and wall surface 2, areas that tend to be dead space can be effectively utilized. Furthermore, since debris tends to accumulate in such corners, installing pipe 1 in the corner and spraying foam can prevent debris from accumulating.

[0033] Pipe 1 has a right-angled triangular cross-section, with its middle side being the side that contacts the wall surface 2. The slanted surface of this middle side has a hole 3 for ejecting bubbles. Other functions and effects are the same as those of pipe 1 shown in (e) to (g) above. Making pipe 1 thin in this way increases the flexibility of its installation location. In the example shown in the figure, the shorter side determines the depth, so it is also possible to make it thinner by shortening the shorter side and lengthening the other sides.

[0034] Furthermore, compared to the case where three circular pipes 1 are connected in series, the surface shape is smoother. That is, it becomes a smooth surface without irregularities. Therefore, it is easier to wipe away dirt and other debris, making cleaning easier. In addition, liquids slide off the surface easily, making it difficult for dirt to adhere. Moreover, multiple holes 3 for spraying foam are provided at the top and bottom 1e of pipe 1. The diameter and shape of these holes 3 are adjusted so that the foam is sprayed out with a predetermined force. Furthermore, by providing holes for spraying foam 3 at the top and bottom 1e, the surface of pipe 1 is also cleaned by the foam.

[0035] The flat portion is attached in contact with the wall surface 2 on which the pipe 1 is placed. Furthermore, the upper end of the pipe 1 is positioned at an angle to the wall surface 2, so that the wall surface 2 and the surface of the pipe 1 are smoothly continuous, making it easier for liquid that has traveled along the wall surface 2 to flow downward along the surface of the pipe 1. Similarly, the lower end is also positioned at an angle to the floor surface 5, so that the floor surface 5 and the surface of the pipe 1 are smoothly continuous, making it easier for liquid to flow from the surface of the pipe 1 to the floor surface 5.

[0036] The piping 1 shown in Figure (k) is configured to be placed on the floor surface 5. To allow for installation on the floor surface 5, it has a relatively flat cross-sectional shape, and the foam ejection holes 3 are provided on the top and left and right sides. The inside of the piping 1 is divided into three sections; the left and right sections are connected at the bottom to form the left and right sections 1f, with the central right section 1g and central left section 1h located in the center of the left and right sections 1f. The cross-sectional shape is made into a thin, plate-like shape (strip shape) or a gently sloping triangular or mountain-shaped shape (not shown) to allow for installation on the floor surface 5. Furthermore, the left and right sides are sloped to form a trapezoid to prevent tripping. Foam is supplied to the left and right sections 1f, air to the central right section 1g, and water containing detergent to the central left section 1h. Foam is generated from air and water. By installing it on the floor surface 5, foam can be supplied to the entire floor surface 5, even in large kitchens.

[0037] Furthermore, the surface has a smooth, even shape with no bumps or irregularities. This makes it easy to wipe away dirt and other debris, thus simplifying cleaning. Additionally, by providing foam-dispensing holes 3 on the top surface, the surface of the pipe 1 is also cleaned with foam. The bottom surface is installed in contact with the floor surface 5. Moreover, the left and right surfaces of the pipe 1 are positioned at an angle to the floor surface 5, creating a shape that allows the floor surface 5 and the surface of the pipe 1 to connect smoothly, making it easy to walk on and easy to clean.

[0038] Furthermore, since this pipe 1 will bear body weight, the thickness of the pipe 1 and the columns within the space on the left and right sides 1f will be designed to withstand sufficient load.

[0039] (Embodiment 2) Figure 3 is a diagram showing a foam spraying device according to Embodiment 2 of the present invention. This foam spraying device 200 consists of a long main body 201 having winches 202 on both sides, a long scraper 204 suspended by wires 203 of the winches 202, a control unit 205 that controls the operation of the winches 202 and the like, and a supply device 206 that supplies water and air.

[0040] The main unit 201 is installed on the wall surface 2. The scraper 204, located at the bottom of the main unit 201, moves up and down along the wall surface 2. The scraper 204 is straight but is held at a slight incline by the winch 202. This ensures that water flows in one direction. The motor and transmission of the winch 202 are housed inside the winch housing, and the end of the wire 203 is connected to the scraper 204.

[0041] Figure 4 is a cross-sectional view of the scraper 204 described above. The scraper 204 has a roughly rectangular cross-section. On the surface facing the wall 2, rubber scrapers 204c are provided at the upper part 204a and the lower part 204b. In addition, the upper part 204 of the scraper 204 is gutter-shaped. Specifically, a wall portion 204f rises outwards to prevent scooped-up foam and water from flowing over the scraper 204 and down.

[0042] The scraper 204 shown in Figure 4 is divided into three sections vertically. Foam is supplied to the upper section 1a, air to the middle section 1b, and water containing detergent is supplied to the lower section 1c. The foam is generated from the air and water. Although the overall shape is rectangular, it can be made even thinner. Making the scraper 204 thinner increases the flexibility of its installation location. A thinner design is particularly useful because the scraper 204 moves up and down.

[0043] Multiple holes 3 for spraying foam are provided on the upper part 1a of the scraper 204. The diameter and shape of these holes 3 are adjusted so that the foam is sprayed out with a predetermined force. The control unit 205 drives and controls the motor of the winch 202. The water and air supply pipe 206a from the supply device 206 is made of a flexible pipe and is connected to one end of the scraper 204.

[0044] Next, the operation of the foam spraying device 200 will be explained. The following control is performed by the control unit 205. The winch 202 of the main body pulls the scraper 204 up to the top. In this state, water and air are supplied from the supply device 206 to generate foam inside the scraper 204 (the method of foam generation is disclosed in the applicant's prior utility model registration application, etc.). While generating foam, the foam is ejected from the hole 3 and the winch 202 is lowered to lower the scraper 204. This sprays the foam onto the wall surface 2. The density of the foam is adjusted to make it easy to adhere to the wall surface 2.

[0045] Next, the winch 202 is driven to pull up the scraper 204. At this time, foam and water accumulate in the trough section 204g of the scraper 204, and because the scraper 204 is slightly sloped overall, the foam and water flow downstream. The foam and water flow out at the end in the direction of this slope and fall down. Therefore, it is only necessary to wipe this section at the end. Alternatively, a collection tank can be connected to this end with a hose to automatically collect the foam and water (not shown in the diagram).

[0046] Figure 5 is a cross-sectional view showing a modified version of the scraper in Figure 4. This scraper 204 has an airbrush 204h attached to the lower end of the scraper 204. Multiple air outlet holes 204j are provided on the back surface of the scraper 204 body. The airbrush 204h blows away any foam or water that leaks out when the scraper 204 is lifted, and also dries the wall surface 2 by moving the scraper 204 up and down.

[0047] Figure 6 is a configuration diagram showing a foam spraying device according to a modified embodiment 2 of the present invention. This foam spraying device 250 consists of a long main body 251 having winches 202 on both sides, a long scraper 254 suspended by wires 203 of the winches 202, a control unit 205 that controls the operation of the winches 202, etc., and a supply device 206 that supplies water and air. The main body 251 is installed on the wall surface 2. The lower part of the main body 251 is provided with numerous holes 251a for spraying foam.

[0048] The motor and transmission of the winch 202 are housed inside the winch housing. The supply device 206 is connected to the main body 251 to supply water and air to the main body 251. A scraper 254 located at the bottom of the main body 251 moves up and down along the wall surface 2. The scraper 254 is linear but is supported by the winch 202.

[0049] Figure 7 is a cross-sectional view of the scraper described above. The scraper 254 has a roughly L-shaped cross-section. A rubber scraper 254a is provided at the end facing the wall surface 2. In addition, the upper part of the scraper 254 is gutter-shaped. With this shape, the scraper 254 can move up and down while retaining the foam inside the gutter.

[0050] Next, the operation of the foam spraying device 250 will be explained. In this foam spraying device 250, first the winch 202 is lowered to move the scraper 254 to the lower part of the wall surface 2. In this state, water and air are supplied from the supply device 206 to the main body 251, and foam is generated inside the main body 251. The generated foam is ejected from a hole 251a provided at the bottom of the main body 251. After a predetermined time has elapsed, the winch 202 is driven to pull up the scraper 254. As a result, the foam and water on the wall surface 2 accumulate inside the scraper 254 and are scooped up along the wall surface 2. Therefore, foam is sprayed over the entire wall surface 2.

[0051] (Embodiment 3) Figure 8 is a diagram showing a foam spraying device according to Embodiment 3 of the present invention. The foam supply unit of this foam spraying device 300 is provided in a pipe 1. A piezoelectric element 301 is attached to the outside of the pipe 1. A voltage of a predetermined frequency is applied to the piezoelectric element 301. The thickness of the pipe 1 on which the piezoelectric element 301 is provided is preferably such that vibrations are easily transmitted to the inside. In addition, vibrations propagate around the piezoelectric element 301, causing the pipe 1 around the piezoelectric element 301 to vibrate. A drive device 302 is connected to the piezoelectric element 301. The drive device 302 controls the on / off state of the voltage.

[0052] The piezoelectric elements 301 are installed in a divided manner around the pipe 1. As shown in the cross-sectional view in Figure 9, the pipe 1 has a circular cross-section, and the piezoelectric elements 301 are installed in a divided manner around this perimeter. By installing them outside the pipe 1, the effects of water can be prevented, and the degree of waterproofing required for wiring, etc., can be reduced. Furthermore, the piezoelectric elements 301 can be installed at any desired location. For example, by installing one downstream at a predetermined distance (for example, a position where the bubbles would become larger) from an upstream location, the state of the bubbles can be maintained. Moreover, since different frequencies and amplitudes can be applied to each piezoelectric element 301 installed in the pipe 1, it becomes easy to control the quality of the bubbles in the entire system.

[0053] This foam supply unit is supplied with water containing detergent from a main unit (not shown). When the piezoelectric element 301 is vibrated at a predetermined frequency and amplitude, cavitation occurs on the pipe wall surface of the pipe 1, generating a large number of fine bubbles. This creates bubbles within the pipe 1, allowing the bubbles to be supplied downstream from the location where the piezoelectric element 301 is installed. The drive device 302 can control the bubble supply state. For example, when sufficient bubbles have been generated in the pipe 1, the water supply amount is reduced and the drive of the piezoelectric element 301 is stopped. Then, when the amount of bubbles decreases, the piezoelectric element 301 is driven again. The increase or decrease in the amount of bubbles is measured with the entire device assembled, and the timing of turning the drive device 302 on and off is determined based on the measurement results.

[0054] As shown in Figure 10, piezoelectric elements 301 can be installed at multiple locations on the pipe 1. In this case, each piezoelectric element 301 can be individually controlled by a drive unit 302. A large amount of foam can be generated by the upstream piezoelectric element 301, and a smaller amount can be generated downstream. Furthermore, since foam can be generated where needed, optimal foam distribution can be achieved for the entire system. The piezoelectric element 301 is attached with adhesive, but as shown in Figure 11, it may also be attached to the pipe 1 at any desired location using a clamp. In this case, the piezoelectric element 301 is provided at the tip of the clamp 303, and the piezoelectric device 301 is attached to the desired location on the pipe 1. In this configuration, the quality of the foam can be adjusted by the user or on-site.

[0055] This configuration requires only one pipe, making installation easy. Furthermore, precise control can be performed for each location. The simple structure also reduces equipment costs. Since foam can be freely regenerated within the piping, the foam can be uniformly distributed across the floor surface.

[0056] Figure 12 is a cross-sectional view showing a modified example of the foam supply unit. Alternatively, plate-shaped fins 304 may be provided inside the pipe 1 in the axial direction of the pipe, and a piezoelectric element 301 may be provided on the outer circumference of the pipe 1 where the fins 304 are provided. As shown in Figure 12(b), the fins 304 are provided in the longitudinal direction inside the pipe 1. By providing the fins 304, vibrations from the piezoelectric element 301 are transmitted to the fins 304, increasing the generation of bubbles. This allows for the generation of a large amount of bubbles.

[0057] Figure 13 is a perspective view showing a modified example of the foam supply unit. This foam supply unit has a configuration in which a piezoelectric element 301 is attached to a lever portion 306 of a fan-shaped net-like plate 305. This plate 305 is placed inside the piping 1 or installed inside the connector portion between two pipes 1. In the example shown in Figure 13, it is placed inside the piping 1.

[0058] The piezoelectric element 301 is of the cantilever type, and the expansion and contraction of the piezoelectric element 301 bends the lever portion 306, causing it to move like a fan. By applying a voltage of a predetermined frequency to the piezoelectric element 301, the plate body 305 vibrates at high speed, and the net of the plate body 305 agitates the water containing detergent, generating foam. In this foam supply unit, cavitation may be generated by the vibration of the net-like plate body 305, or water and air may be sent into the pipe 1 in a mixed state and agitated in the pipe 1 to generate foam. Such a structure can be placed at any desired position in the piping as needed.

[0059] (Embodiment 4) Figure 14 is a diagram showing the configuration of a foam spraying device according to Embodiment 4 of the present invention. The foam supply unit of this foam spraying device 400 consists of a water tank 401 installed inside the main body, a porous stone 402 provided at the bottom of the water tank 401, and an air supply unit 403 that supplies air to the porous stone 402. Water containing detergent is supplied to the water tank. This is done by the water supply unit. The air supply unit 403 may be provided independently of the air supply unit that supplies to the piping 1, or it may be configured by branching off from the same pump or the like.

[0060] A foam outlet 404 is provided at the top of the water tank 401. The outlet 404 is connected to the pipe 1. When this foam spraying device 400 is used, the pipe 1 can consist of only one pipe for foam. When air is supplied to the porous stone 402 placed inside the water tank 401, a large amount of bubbles are ejected, causing a large amount of foam to be generated from the water containing detergent. This foam fills the water tank 401 and overflows from the outlet 404 into the pipe 1.

[0061] This configuration allows for easy foam generation, resulting in a simple device setup. Furthermore, since only one pipe is required, installation is easy.

[0062] Furthermore, as shown in Figure 15, the foam supply unit can also be installed in the middle of the piping 1. A bypass path 410 parallel to the piping 1 is formed via a valve 412, and water containing detergent is taken in from this bypass path 410 to generate foam in the water tank 401. This foam is returned to the piping 1 from the bypass path 410. The air supply unit and the valve 412 are controlled by the control unit 411. Multiple foam supply units can be installed in the piping 1 (not shown). In this way, the quality of the foam can be controlled throughout the entire device.

[0063] Figure 16 is a configuration diagram showing a modified example of a foam spraying device according to Embodiment 4 of the present invention. Figure 17 is a cross-sectional view of the piping shown in Figure 16. The foam supply section of this foam spraying device has an air pipe 451 and a water pipe 452 connected inside the pipe 1. The water pipe 452 is on the upper side. A hole 453 is provided between the air pipe 451 and the water pipe 452, and a porous stone 454 is provided at the location of the hole 453. In addition, a hole 455 for foam ejection is provided in the water pipe 452. Air is supplied to the air pipe 451 from the air supply section. Water containing detergent is supplied to the water pipe 452 from the water supply section.

[0064] The control unit 456 controls the operation of the air supply unit and the water supply unit. First, water containing detergent is supplied to the water pipe 452. This causes the porous stone 454 to be submerged in water. When air is supplied to the air pipe 451 in this state, air is ejected from the porous stone 454, and a large amount of foam is generated in the water pipe 452. This foam is ejected to the outside from the holes 455. When the air supply is stopped, the amount of water containing detergent in the water pipe 452 increases, immersing the porous stone 454. By supplying air again in this state, foam is generated. Depending on the water flow rate, it is also possible to continuously generate foam by supplying air while supplying water. When ejecting only water, only water is supplied to the water pipe 1, and the water is discharged to the outside from the holes.

[0065] This configuration allows bubbles to be generated at any desired location. Furthermore, the density of the porous stone 454 can be adjusted to produce fine bubbles, thus controlling the quality of the bubbles. In addition, fewer pipes 1 are required, making installation easier. The porous stone can be replaced with other materials having similar functions. For example, porous scrubbing brushes, porous metal bodies, and other porous materials can be used.

[0066] Next, as shown in Figure 18, a bubble tube 461 that ejects bubbles may be inserted into the pipe 460 to generate bubbles throughout the entire interior of the pipe 460. The bubble tube 461 is made of a porous resin tube. It is inserted and positioned inside the pipe 460. An air supply unit is connected to this bubble tube 461. A water supply unit is connected to the pipe 460. Because the bubble tube 461 is inserted inside the pipe 460, it can be treated as essentially a single pipe. In addition, since the bubble tube 461 can be used even in curved sections, the elbow section of the pipe 460 can also be bent and used as is.

[0067] In this foam supply unit, water containing detergent is supplied into the pipe 460, and air is then supplied to the bubble tube 461. This causes air to be ejected from the bubble tube 461, generating foam inside the pipe 460. Since the bubble tube 461 is inserted inside the pipe 460, it is located at the bottom and is easily immersed when water is supplied. Therefore, foam can be generated efficiently. In addition, foam is generated throughout the entire section of the pipe 460 where the bubble tube 461 is laid, resulting in uniform foam generation within the pipe 460. The generated foam is ejected to the outside through holes provided in the pipe 460.

[0068] When water is to be ejected, supplying only water into the pipe 460 will cause water to be ejected from the hole 462. With this configuration, only one pipe 460 needs to be laid.

[0069] (Embodiment 5) Figure 19 is a diagram showing a foam spraying system according to Embodiment 5 of the present invention. This foam spraying system 500 uses a plurality of foam spraying devices 501. The foam spraying system 500 has a controller 502 that controls the plurality of foam spraying devices 501. A camera 503 and lighting 504 installed on the ceiling of each room to be cleaned are connected to the controller 502. Various sensors 505 are also connected to the controller 502.

[0070] The controller 502 includes an image processing unit that performs predetermined processing on images acquired from the camera 503, a pest detection unit that identifies insects, a dirt detection unit that identifies dirt, a cleaning detection unit that determines whether or not to perform cleaning with a foam spraying device, and a communication unit that is connected to a network and communicates with the outside. In each target location (room, kitchen, etc.), it is preferable to install the camera 503 on the ceiling. The lighting 504 is arranged to illuminate mainly areas that are prone to getting dirty or where pests are likely to appear.

[0071] Furthermore, the controller 502 may be connected to a mobile information terminal via a network so that it can be operated from an external source. The communication unit can also notify the mobile information terminal 550 from the controller 502 of the occurrence of pests. In addition, the controller 502 can also notify the mobile information terminal 550 when a predetermined level of soiling occurs.

[0072] Figure 20 is an explanatory diagram illustrating the process for determining pests and other harmful organisms. The image processing unit acquires images from the camera 503 and performs predetermined image processing. For example, the kitchen floor 5 has image data 561 of the best condition, and the difference between this image data 561 and the acquired image data 562 is calculated. The part where the difference occurs is extracted to construct image data 563 for determination. The pest determination unit 569 determines the shape of the difference displayed in 563 in the image by pattern matching. The pest determination unit 569 has typical pattern images of pests and other harmful organisms, and if it matches any of these, it determines that pests and other harmful organisms are present in the kitchen. Pests and other harmful organisms are insects and vermin, and are particularly hygienic. The size of the pests that can be determined is determined by the resolution of the camera 503.

[0073] If the pest detection unit 569 determines that pests are present, the controller 502 issues an operation command to the foam spraying device 501 based on the determination of the cleaning detection unit. The cleaning detection unit makes a cleaning decision when the number of pests reaches a predetermined number, or each time it detects pests. These decisions are made for each location where the camera 503 and lighting 504 are installed.

[0074] Figure 21 is an explanatory diagram illustrating the process for determining dirt and other contaminants. The image processing unit acquires images from camera 503 and performs predetermined image processing. For example, the kitchen floor 5 has image data 571 of the best condition, and the difference between this image data 571 and the acquired image data 572 is calculated. The part where the difference occurs is extracted to construct an image 573 for determination. The dirt and contaminant determination unit 579 determines the presence of dirt based on the area, color, reflected light, etc. of the difference. If the dirt and contaminant determination unit 579 determines that the floor 5 is dirty, the controller 502 issues an operation command to the foam spraying device 501 based on the determination of the cleaning determination unit. These operations are performed for each location where the camera 503 and lighting 504 are installed.

[0075] The stain detection unit 579 can determine the type of stain. This is done by comparing the reflected light, the outline of the stained area, the color, etc., with characteristic stain data stored. For example, if the reflected light is strong, it is determined that an oily stain has occurred, and the area is obtained from the image. The cleaning detection unit then issues a cleaning command when the sum of the areas of all stains reaches a predetermined area. In addition, if the outline is circular or fixed in that position in the image, it is determined that the stain is of high viscosity.

[0076] Furthermore, the lighting 504 can use infrared light for pests and ultraviolet light for dirt. Infrared light makes it easier to detect the activity of insects, rodents, etc. Dirt is more easily detected by ultraviolet light, making it easier to identify dirt from the acquired image. The lighting 504 can use both infrared light and ultraviolet light or one of them, and can also be used in combination with a normal light. When using infrared light or ultraviolet light, a reference image acquired with infrared light or ultraviolet light should be acquired in advance.

[0077] Furthermore, an ultrasonic generator 580 may be installed on the ceiling. This ultrasonic generator 580 is controlled by a controller 502 and generates ultrasonic waves of a desired frequency by applying a voltage of a predetermined frequency to a piezoelectric element. The desired frequency is a frequency that insects and rodents dislike. The frequency is either preset in the ultrasonic generator 580 or adjusted by the controller 502. When the pest detection unit 569 determines that pests have appeared, the pest repellent unit operates the ultrasonic generator 580 at a predetermined frequency. The pest repellent unit stores the effective ultrasonic frequencies for each type of pest and controls the unit to emit appropriate ultrasonic waves according to the type of pest determined by the pest detection unit 569.

[0078] Furthermore, the controller 502 can be configured to work in conjunction with an external mouse detector. The cleaning decision unit will make a cleaning decision based on the detection signal received from the mouse detector.

[0079] (Embodiment 6) Figure 22 is a diagram showing a foam spraying system according to Embodiment 6 of the present invention. This foam spraying device 600 has a configuration in which the inside of the piping 1 is divided into four sections, with a fourth pipe 1g provided at the bottom. The other configurations are substantially the same as those of Embodiment 1. Air, water, and defoaming agent are supplied individually to the fourth pipe 1g. The end of the fourth pipe 1g is connected to the air supply section, water supply section, and defoaming agent supply section via a switching valve. The switching valve is switched and controlled by the control unit 601.

[0080] The control unit 601 performs control in the following procedure. When foam is ejected from pipe 1, foam is ejected from hole 3 provided in the upper part 1a. This foam is a so-called "bulging foam M" which remains as foam for a long time and has a high cleaning effect. Because this type of foam is difficult to move, water for movement is ejected onto the floor surface 5 from the fourth pipe 1g. This causes the bulging foam M to move on the floor surface 5, as shown in Figure (b). Next, the control unit 601 ejects bulging foam M again, followed by ejecting water from the fourth pipe 1g. By doing this continuously, the bulging foam M is supplied widely to the floor surface 5.

[0081] Next, to eliminate the bulging foam M, an antifoaming agent is supplied from the fourth pipe (1g) and sprayed onto the floor surface 5. This eliminates the bulging foam M. Alternatively, it is acceptable to leave it for a long time to allow it to disappear naturally. Finally, air is supplied from the fourth pipe (1g) to dry the floor surface 5. Drying the floor surface 5 prevents slipping.

[0082] Furthermore, as shown in Figure 23, a fifth pipe 1h for spraying disinfectant and sterilizing mist may be provided at the top 1a. The fifth pipe 1h is connected to a mist supply device (not shown). The mist supply device is a general-purpose sprayer. The sprayer supplies water containing hypochlorous acid in a mist to the fifth pipe 1h. The mist supply device is driven periodically or when it is determined that pests or other infestations have occurred in the above embodiment.

[0083] (Embodiment 7) Figure 24 is a configuration diagram showing a defoaming robot according to Embodiment 7 of the present invention. This defoaming robot 700 is a robotic vacuum cleaner for removing foam scattered on a floor surface 5. This defoaming robot 700 has wheels 701 for travel, a drive unit 702 that drives the steering of the wheels, a power supply 703 that supplies power to the entire robot, and a control device 704 that generates a travel path and controls the drive unit 702 to travel along the desired path. These are made up of general technical elements. A defoaming device 706 that sucks up and removes foam is provided in the center of the housing 705 that houses these devices. A general rotary type can be used for the defoaming device 706. Wheels 701 for travel are provided on the left and right rear of the housing 705 and are driven by the drive unit 702.

[0084] Furthermore, a rotary dust collector 708 is provided in front of the housing 705. The dust collector 708 consists of a rotary brush 707, which is driven by the drive unit 702. The brush 707 rotates in opposite directions on the left and right sides, rotating to capture foam in the center. The defoaming robot 700 travels across the floor surface by generating a predetermined path with the control device 704, rotates the brush 707 to capture foam inwards, and then the defoaming device 706 sucks up the foam to defoam it. In this way, floor cleaning can be completed without waiting for the foam to disappear.

[0085] Alternatively, as shown in Figure 25, a curved plate 709 may be used to collect foam instead of the brush 707. Figure 25(b) shows a vertical configuration diagram. Because the plate 709 is curved, it can collect foam in front of it towards the center while it is moving. The foam collected in the center is sucked into a defoaming device 706 located above the central part and defoamed. The other configurations are the same as those of the defoaming robot shown in Figure 24.

[0086] Figure 26 is an explanatory diagram showing an example of a path generated by a defoaming robot. The defoaming robot 700 generates a predetermined path using the control device 704 and moves accordingly. In this floor surface, a grating G is provided in the center, and a drainage channel is provided inside the grating G. The control device 704 of the defoaming robot 700 generates a path so that the foam is ultimately collected in the drainage channel (solid line in the figure). Specifically, it either travels to the front of the drainage channel, turns around and collects the foam again, or travels over the grating G to drop the foam into the drainage channel, generates a path again to collect the foam, and drops the foam into the drainage channel again (dotted line in the figure). During this operation, the defoaming device 706 also removes foam. In this way, foam can be processed in a short time. Furthermore, small debris can also be washed into the drainage channel.

[0087] (Embodiment 8) Figure 27 is a diagram showing a foam spraying device according to Embodiment 8 of this invention. This foam spraying device 800 is for use in cold regions and consists of a main body 804 comprising a detergent supply unit 801, an air supply unit 802, and a water supply unit 803, and piping 1 for generating and spraying foam. A predetermined detergent is placed in the detergent supply unit 801. It can be either undiluted or diluted, but it is preferable to use a concentration that does not freeze.

[0088] A water heating unit 805 is connected to the water supply unit 803. The water heating unit 805 is located upstream of the water supply path of the water supply unit 803. The controller 806 controls the on / off operation of the water heating unit 805. It is preferable to use an electric instantaneous water heater for the water heating unit 805. The piping 1 leading to the water heating unit 805 is equipped with a heating element to prevent freezing and insulation material 807. The water supply unit 803 is also equipped with a drain 808 for drainage. A valve 809 is provided in the drain 808, and its opening and closing is controlled by the controller 806. Lighting, various sensors, cameras, etc. are the same as in Figure 1.

[0089] In this foam spraying device 800, water is introduced from the water pipe into the water heating unit 805 in a sub-zero environment. At this time, the heating heater 807 prevents the water pipe from freezing. The water is at a temperature close to 0 degrees Celsius, and this water is heated to a predetermined temperature by the water heating unit 805. For example, in the middle of winter, the water is heated to 15 degrees Celsius. In this state, water is supplied to the pipe 1. This melts any remaining frozen water inside the pipe 1. In particular, even if the holes for spraying foam are frozen and blocked, the heated water melts them, preventing clogging.

[0090] After melting the ice in the piping, the controller 806 supplies detergent from the detergent supply unit 801 to the water supply unit 803 to create water containing detergent at a predetermined concentration. From this state, the water containing detergent is supplied from the water supply unit 803 to the piping 1, and air is supplied to the piping 1 from the air supply unit 802. Foam is generated by a foam generation system installed in the piping 1. For example, the system described in Embodiment 3 above can be used. After dispersing the foam from the piping 1, the controller 806 opens the valve 809 of the drain 808 to discharge the water remaining inside the water supply unit 803. This prevents freezing inside the water supply unit 803. The valve 809 is closed when in use.

[0091] Furthermore, the air supply unit 802 introduces air into the piping 1 after use of the foam spraying device 800 to purge any moisture inside. This operation is controlled by the controller 806. With this configuration, the foam spraying device 800 can be operated in cold regions without freezing. [Explanation of symbols]

[0092] 100 Foam spraying device 1 Piping 1a Upper part 1b central part 1c Lower part 3 holes 200 Foam spraying device 201 Main Unit 202 Winch 203 Wire 204 Scraper 205 Control Unit 206 Feeding device 300 Foam spraying device 301 Piezoelectric element 302 Drive unit 400 Foam spraying device 401 Aquarium 402 Porous stone 403 Air supply unit 404 Outlet

Claims

1. A foam spraying device comprising a main body having one of a foam supply unit, an air supply unit, or a water supply unit, and piping for spraying foam, wherein the piping has a structure in which the inside is divided into multiple sections in one direction, and the length in the vertical direction is greater than the length in the horizontal direction in the cross-sectional shape, and one of the foam supply unit, air supply unit, or water supply unit is connected to each divided pipe.

2. The foam spraying device according to claim 1, characterized in that the piping has a semi-circular cross-section.

3. The foam spraying device according to claim 1, characterized in that the piping has a triangular or mountain-shaped cross-section.

4. The foam spraying device according to claim 1, characterized in that the piping has a substantially rectangular cross-section.

5. The foam spraying device according to claim 1, characterized in that the upper and lower parts of a pipe composed of three or more sections are connected inside the aforementioned piping.

6. The foam spraying device according to claim 1, characterized in that the piping has a cross-section that is approximately a right triangle, with the shorter side corresponding to the floor surface and the middle side corresponding to the wall surface.

7. The foam spraying device according to any one of claims 1 to 6, characterized in that the upper part of the piping is provided with multiple holes for spraying and dispersing foam.

8. A foam spraying device comprising a main body having one of a foam supply unit, an air supply unit, or a water supply unit, and piping for generating and spraying foam, wherein the piping has a structure in which the inside is divided into multiple sections in one direction, the horizontal length of the cross-section is greater than the vertical length, and it is installed on the floor surface, and one of the foam supply unit, air supply unit, or water supply unit is connected to each divided pipe.

9. The foam spraying device according to claim 8, characterized in that the piping has a cross-sectional shape that is thin and plate-like, or a triangular or mountain-shaped shape with a gentle slope.

10. The foaming spraying device according to claim 1 or 8, wherein the foam supply unit is configured to have a piezoelectric element provided in the piping.

11. The foaming spraying apparatus according to claim 1 or 8, wherein the foam supply unit has a porous stone that receives air from the air supply unit.

Images