JP2016093780A - Foam cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foam cleaning device which has sanitation and improves work property of a cleaning work.SOLUTION: A liquid pipe 3 is inserted into a gas pipe 2, namely the gas pipe 2 is exposed, but the liquid pipe 3 is not exposed. Therefore, compared with a case in which, both of the gas pipe 2 and liquid pipe 3 are exposed, in a foam cleaning device 1, foreign matters are hardly deposited, and the number of portions to be cleaned is small, so that cleaning is facilitated. The foreign matters are hardly deposited, and cleaning is facilitated in the foam cleaning device 1, so that the device has sanitation. In addition, gas and liquid detergent are individually supplied to a foam formation part 5 from the gas pipe 2 and the liquid pipe 3. Therefore, compared with a case in which, gas and liquid detergent are mixed and then supplied to the foam formation part 5, waste foam is not generated, so that, respective supply efficiency of gas and liquid detergent to the foam formation part 5 is enhanced. Because the supply efficiency of gas and liquid detergent to the foam formation part 5 is enhanced, foam supply efficiency to a cleaning object is enhanced. Therefore, a work property of the cleaning work can be improved.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a foam cleaning apparatus that discharges foam of a liquid detergent onto an object to be cleaned.

For example, in a backyard of a supermarket or a kitchen of a restaurant, the floor may be washed with a detergent for hygiene purposes. For this reason, conventionally, a foam cleaning apparatus has been proposed that discharges bubbles generated by mixing liquid detergent and air onto a floor to be cleaned (see Patent Document 1).
In the case of the first foam cleaning apparatus described in Patent Document 1, a first liquid supply pipe and an air supply pipe are connected upstream of the foamer. Further, a split pipe is connected to the downstream side of the foamer via a second liquid supply pipe.

The divided pipe is arranged on the wall near the floor, and the first and second liquid supply pipes, the air supply pipe, and the foamer are arranged above the divided pipe on the wall.
When the liquid detergent and air are supplied to the foamer through the first liquid supply pipe and the air supply pipe, bubbles are generated inside the foamer. The generated foam is supplied to the split pipe through the second liquid supply pipe, and supplied to the floor through the supply hole formed in the split pipe.

JP-A-2005-199257

In the case of the first foam cleaning apparatus described in Patent Document 1, on the surface of each part of the first foam cleaning apparatus, between each part of the first foam cleaning apparatus and the wall, or each part of the first foam cleaning apparatus Foreign matter such as dust or dust is likely to accumulate between each other.
A portion where foreign matter is likely to accumulate is a portion to be cleaned. The more parts to be cleaned, the more difficult it is to clean. A foam cleaning device that easily deposits foreign matter and is difficult to clean tends to be unsanitary.

Incidentally, Patent Document 1 describes a second foam cleaning apparatus provided with a gas-liquid supply pipe instead of the first liquid supply pipe and the air supply pipe. The second foam cleaning apparatus has fewer parts to be cleaned than the first foam cleaning apparatus.
However, since the liquid detergent and air flow through the gas-liquid supply pipe, the liquid detergent and air are mixed in the pipe and bubbles are generated unnecessarily, which may reduce the supply efficiency of the liquid detergent and air. is there. When the supply efficiency of the liquid detergent and air is reduced, the supply of foam to the floor is hindered, so that the workability of the cleaning operation is lowered.

Patent Document 1 describes a third foam cleaning apparatus including a passage block. The third foam cleaning apparatus has fewer parts to be cleaned than the first foam cleaning apparatus.
However, the passage block is unnecessarily large. This is because the passage block is provided with a supply path corresponding to the first liquid supply pipe, the air supply pipe, and the divided pipe.

  The present invention has been made in view of such circumstances, and a main object of the present invention is to provide a hygienic and compact foam cleaning apparatus with improved workability of the cleaning operation.

  The foam cleaning apparatus according to the present invention includes a gas pipe through which a gas flows, a liquid pipe through which a liquid detergent flows, and foam in which bubbles are generated by supplying the gas and the liquid detergent from the gas pipe and the liquid pipe. A foam cleaning apparatus that discharges bubbles generated in the foaming section to a cleaning target, wherein the liquid pipe is inserted into the gas pipe.

  The foam cleaning apparatus according to the present invention includes a plurality of the foaming parts, has the foaming part built therein, and further includes a plurality of nozzles for discharging bubbles generated in the foaming part to a cleaning target. It is characterized by.

  In the foam cleaning apparatus according to the present invention, the liquid pipe uses a drip tube in which a plurality of liquid discharge holes are arranged in parallel in the length direction of the liquid pipe, and the nozzle is a base end opening of the nozzle. Is connected to the gas pipe so as to be positioned below the liquid discharge hole, and the liquid detergent discharged from each liquid discharge hole is dropped onto the foamed portion built in the lower nozzle. It is characterized by.

  In the foam cleaning apparatus according to the present invention, each liquid discharge hole is located outside the range facing the base end opening of the lower nozzle in the liquid pipe, and the liquid detergent discharged from each liquid discharge hole, After passing through the outer peripheral surface of the liquid pipe, the liquid pipe is dropped onto the foamed portion built in the lower nozzle.

  In the foam cleaning apparatus according to the present invention, the foaming portion includes two mesh members that respectively cover the base end opening and the tip opening of the nozzle, and the two mesh members between the two mesh members. And having a sponge-like member for covering, and spacers are arranged between the two mesh-like members and between the tip opening side and the mesh-like member covering the tip opening, respectively.

  In the foam cleaning apparatus according to the present invention, both the gas and the cleaning liquid can flow through the gas pipe, and the gas supply to the gas pipe and the supply of the cleaning liquid are performed exclusively. A liquid supply unit and a liquid supply unit that performs supply or stop of supply of the liquid detergent to the liquid pipe are further provided.

  In the foam cleaning apparatus according to the present invention, each of the gas pipe and the liquid pipe is formed by connecting a plurality of tubular members with a joint that can be connected / separated, and the joint of the gas pipe is separated when the joint is separated. It is arranged at the position where the joint of the liquid pipe is exposed.

In the present invention, the liquid pipe and the gas pipe are combined into one by inserting the liquid pipe into the gas pipe. That is, the number of sites where foreign matter accumulates or needs to be cleaned is reduced.
The configuration in which the liquid pipe is inserted into the gas pipe is more compact than the configuration in which the flow paths of the liquid and the gas are arranged in parallel with the block body.
Liquid detergent flows through the liquid pipe. The gas flows between the inner peripheral surface of the gas pipe and the outer peripheral surface of the liquid pipe. In other words, since the liquid detergent flow path and the gas flow path exist separately, it is possible to suppress unnecessary generation of bubbles inside the liquid pipe or the gas pipe. Therefore, there is no possibility that the bubbles generated unnecessarily reduce the supply efficiency of the liquid detergent and gas to the foaming part.

  In the present invention, the nozzle incorporates the foamed portion. In other words, the pipe connecting the nozzle and the foaming portion is omitted. Therefore, the foam cleaning apparatus is less likely to accumulate foreign matter and easy to clean.

In the present invention, since the nozzle is connected to the gas pipe, the gas is naturally supplied to the foaming part built in the nozzle. Moreover, the liquid detergent drops from the liquid pipe to the foamed part. As a result, gas and liquid detergent are mixed in the foaming part.
Since the liquid pipe uses a drip tube, the amount of liquid detergent supplied to each foaming part is equal. Accordingly, the amount of foam discharged from each nozzle and the foam quality are likely to be uniform. When the amount of foam discharged to each part to be cleaned and the foam quality are uniform, the cleaning efficiency is higher than when the amount of foam discharged to each part to be cleaned and / or the foam quality is non-uniform.

In the present invention, the liquid detergent discharged from the liquid discharge hole of the liquid pipe drops along the outer peripheral surface of the liquid pipe and then drops onto the foamed portion. Therefore, compared with the case where the liquid detergent discharged from the discharge hole of the liquid pipe is dropped directly on the foamed portion, the liquid detergent is less dripped.
If the dropping force of the liquid detergent is too strong, the liquid detergent may pass through the foaming part before being mixed with the gas in the foaming part and be discharged from the nozzle without being foamed.
In other words, the foaming efficiency (and thus the cleaning efficiency of the object to be cleaned) is improved by weakening the dropping force of the liquid detergent.

In the present invention, the liquid detergent and the gas are easily mixed in the two mesh members and the sponge member. In particular, the sponge-like member prevents the unfoamed liquid detergent from being discharged from the nozzle through the foamed portion.
The spacer disposed between the two mesh members suppresses the sponge-like member from being unnecessarily compressed between the two mesh members. The spacer disposed between the tip opening side of the nozzle and the mesh member provides a sufficient space inside the nozzle for stably discharging bubbles.
As a result, foaming efficiency and cleaning efficiency are improved.

In the present invention, when the gas-liquid supply unit supplies gas to the gas pipe and the liquid supply unit supplies liquid detergent to the liquid pipe, bubbles are generated in the foaming unit, and bubbles are generated from the nozzle to the object to be cleaned. Supplied.
On the other hand, when the gas-liquid supply unit supplies the cleaning liquid to the gas pipe and the liquid supply unit stops supplying the liquid detergent, no foam is generated in the foaming unit, and the cleaning liquid is supplied from the nozzle to the object to be cleaned. .
That is, the foam cleaning apparatus can switch between cleaning of the cleaning target with the foam of the liquid detergent and cleaning of the cleaning target with the cleaning liquid.

  In the present invention, the tubular members constituting the gas pipe (and the liquid pipe) are connected by a joint. If the tubular members constituting the gas pipe are separated by a joint, the joint of the liquid pipe is exposed. Therefore, it is easy to extend or shorten both the gas pipe and the liquid pipe.

In the foam cleaning apparatus of the present invention, the gas pipe is exposed, but the liquid pipe is not exposed. That is, there is no liquid pipe in appearance. Therefore, compared with the case where both the gas pipe and the liquid pipe are exposed, foreign substances are less likely to accumulate in the foam cleaning apparatus. Moreover, since there are few places to be cleaned, it is easy to clean. The foam cleaning apparatus in which foreign substances do not easily accumulate and is easy to clean is hygienic.
A liquid pipe is built in the gas pipe. Therefore, the foam cleaning apparatus is compact.

  Furthermore, liquid detergent and gas are separately supplied to the foaming section. Therefore, compared with the case where the liquid detergent and the gas are mixed and supplied to the foaming part, bubbles are not generated unnecessarily at the part other than the foaming part. Therefore, the supply efficiency of each of the liquid detergent and gas to the foaming part is high. When the supply efficiency of each of the liquid detergent and gas to the foaming part is high, the supply efficiency of foam to the object to be cleaned is improved. As a result, the workability of the cleaning work can be improved.

It is a front view which shows the external appearance structure of the foam cleaning apparatus which concerns on embodiment of this invention. It is a front view which shows the external appearance structure of the upstream edge part of a foam cleaning apparatus. It is a front view which shows the external appearance structure of the coupling with which a foam cleaning apparatus is provided. It is sectional drawing which shows the internal structure of a foam cleaning apparatus. It is sectional drawing which shows the internal structure of the foaming part with which a foam cleaning apparatus is provided. It is sectional drawing which shows the internal structure of the upstream edge part of a foam cleaning apparatus.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. In the following description, up and down and left and right indicated by arrows in the figure are used.

FIG. 1 is a front view showing an external configuration of a foam cleaning apparatus 1 according to an embodiment of the present invention.
FIG. 2 is a front view showing an external configuration of the upstream end portion of the foam cleaning apparatus 1. FIG. 2 also includes a block diagram showing the configuration of the control system of the foam cleaning apparatus 1.
FIG. 3 is a front view showing an external configuration of the joints 22 and 32 included in the foam cleaning apparatus 1.
FIG. 4 is a cross-sectional view showing the internal configuration of the foam cleaning apparatus 1. 3 and 4 correspond to the portion surrounded by the two-dot chain line shown in FIG.
FIG. 5 is a cross-sectional view showing the internal configuration of the foaming part provided in the foam cleaning apparatus 1. FIG. 5 is also an enlarged view of a portion surrounded by a two-dot chain line shown in FIG.
FIG. 6 is a cross-sectional view showing the internal configuration of the upstream end of the foam cleaning apparatus 1. FIG. 6 corresponds to the front view shown in FIG.

The foam cleaning apparatus 1 includes a gas pipe 2, a liquid pipe 3, a plurality of nozzles 4, 4,..., A plurality of foaming parts 5, 5,. A valve 63, a gas pump 64, a liquid pump 65, a detergent pump 66, and a controller 67 are provided.
The gas pipe 2 includes a plurality of tubular members 21, 21,..., A plurality of joints 22, 22,.
The liquid pipe 3 includes a plurality of tubular members 31, 31, ..., a plurality of joints 32, 32, ..., and a plurality of support members 33, 33, ....
Each nozzle 4 includes a main body 41 and a tip 42.
Each foamed portion 5 includes mesh members 51 and 52, sponge-like members 53, and spacers 54 and 55.

The foam cleaning apparatus 1 foams the liquid detergent and then discharges it to the cleaning target. Below, the floor F of a kitchen is illustrated as a cleaning object of the foam cleaning apparatus 1.
The gas pipe 2 is attached to the wall W of the kitchen in a posture along the floor F. In order to simplify the description, it is assumed below that the gas pipe 2 is linear in the left-right direction, and the right end side of the gas pipe 2 is the upstream side and the left end side is the downstream side.

  Each tubular member 21 constituting the gas pipe 2 has a horizontal cylindrical shape in the left-right direction, and is made of, for example, vinyl chloride. The tubular members 21, 21,... Are juxtaposed in the length direction (left-right direction). The longitudinal center of each of the tubular members 21, 21,... Is fixed to the wall W via a fixing member (not shown). Therefore, useless deformation | transformation (for example, sagging by dead weight) of the gas pipe 2 is suppressed.

Two adjacent tubular members 21, 21 are connected via a joint 22 or a connecting portion 23. The tubular members 21 and 21 connected via the joint 22 or the connection portion 23 are separated from each other by an appropriate length at opposite ends.
Since the joint 22 uses an expansion / contraction union joint, the connection and separation of the tubular members 21 and 21 are easy. In addition, due to the stretchability of the joint 22, useless displacement accompanying thermal expansion or contraction of the gas pipe 2 is absorbed. Note that the joint 22 may not have elasticity.
The connection part 23 uses a T-shaped joint. Specifically, the tubular members 21 and 21 connected via the connection part 23 are connected via the main pipe of the T-shaped joint in the connection part 23.

The left end opening of the tubular member 21 arranged at the leftmost end is closed by a terminal member (not shown). A terminal member 24 is attached to the right end portion of the tubular member 21 arranged at the rightmost end.
The end member 24 has a bottomed cylindrical shape in a lateral posture. The opening side of the bottomed cylinder in the end member 24 is connected to the right end portion of the tubular member 21 disposed at the rightmost end. At least one opening 241 is provided in a side surface portion of the bottomed cylinder in the end member 24. An opening 242 is provided in the bottom surface portion of the bottomed cylinder in the end member 24. When the terminal member 24 is provided with a plurality of openings 241, 241,..., All other openings 241 may be closed except for one.
A supply pipe 600 is connected to the end member 24 through an opening 241. That is, the supply pipe 600 is connected to the gas pipe 2.

The liquid pipe 3 is linear in the left-right direction. The right end side of the liquid pipe 3 is an upstream side, and the left end side is a downstream side. The liquid pipe 3 is inserted through the gas pipe 2.
Each tubular member 31 constituting the liquid pipe 3 is a cylindrical drip tube arranged in a horizontal posture in the left-right direction. The drip tube may be commercially available. In the tubular member 31, a plurality of discharge holes 3a, 3a,... Are arranged in parallel in the length direction (left-right direction) at equal intervals (for example, intervals of 30 cm).
Each liquid discharge hole 3a is opened directly upward. Note that the liquid discharge hole 3a may be opened forward, backward, diagonally upward, diagonally downward, etc., as long as it is not directly downward. The tubular members 31, 31,... Are juxtaposed in the length direction.

Since the liquid pipe 3 is a drip tube, an equal amount of liquid droplets is discharged through each of the discharge holes 3a, 3a. The liquid droplets discharged from the liquid discharge hole 3 a are dropped after passing through the outer peripheral surface of the tubular member 31.
The arrangement position in the left-right direction of each liquid discharge hole 3a is equal to the arrangement position in the left-right direction of the gap between the tubular members 21, 21 connected via the connection portion 23 of the gas pipe 2. That is, the tubular member 21 does not exist below the discharge hole 3a.

Two adjacent tubular members 31, 31 are connected by a single joint 32. Since the joint 32 uses a union joint, the connection and separation of the tubular members 31 and 31 are easy. Are arranged in a one-to-one correspondence with the joints 22, 22,... Of the gas pipe 2, and when the tubular members 21, 21 are separated from each other by the joint 22, the joint 32 is exposed.
Each joint 32 may have elasticity.

The left end opening of the tubular member 31 arranged at the leftmost end is closed by a terminal member (not shown). The tubular member 31 is inserted into the leftmost tubular member 21 of the gas pipe 2.
The tubular member 31 arranged at the rightmost end passes through the tubular member 21 at the rightmost end of the gas pipe 2. A supply pipe 601 is connected to the right end portion of the tubular member 31 through the opening 242 of the end member 24 of the gas pipe 2. That is, the supply pipe 601 is connected to the liquid pipe 3.
The liquid pipe 3 is restrained from unnecessary deformation (for example, drooping due to its own weight) inside the gas pipe 2. For this purpose, each joint 32 is locked to the joint 22 via one support member 33 or two support members 33, 33.

The nozzles 4, 4,... Are juxtaposed at the same intervals as the intervals between the liquid discharge holes 3a, 3a,.
The main body 41 constituting each nozzle 4 has a vertical cylindrical shape. Hereinafter, the upper end opening of the main body 41 is referred to as a proximal end opening 4 a of the nozzle 4. The upper end portion of the main body 41 is connected to a branch pipe of a T-shaped joint in the connection portion 23 of the gas pipe 2.
That is, the main body 41 is connected to the gas pipe 2 so that the base end opening 4 a is positioned below the liquid discharge hole 3 a of the liquid pipe 3. Since the direction of the liquid discharge hole 3 a is directly upward (other than right downward), the liquid discharge hole 3 a is located outside the range facing the base end opening 4 a in the liquid pipe 3.

The distal end portion 42 has a bottomed cylindrical shape with a vertical posture. The opening side of the bottomed cylinder at the distal end portion 42 is connected to the lower end portion of the main body portion 41. A tip opening 4 b of the nozzle 4 is provided at the bottom of the bottomed cylinder at the tip 42. The front end opening 4b faces the floor F.
A step portion 421 is provided on the inner peripheral surface of the distal end portion 42. The vertical position of the step portion 421 is above the vertical position of the tip opening 4b, and the step portion 421 and the tip opening 4b are separated by an appropriate length. The distal end portion 42 has a larger inner diameter on the upper side than the step portion 421 (specifically, the outer diameter of the main body portion 41), and a smaller inner diameter on the lower side than the step portion 421.

The foamed portions 5, 5,... Are built into the nozzles 4, 4,. Specifically, each foaming part 5 is accommodated in the tip part 42 of the nozzle 4.
The net-like member 51 includes a net body 511 having a circular shape in plan view and a downward convex surface, and a hook-like part 512 projecting laterally from the peripheral edge of the net body 511. The net body 511 covers the base end opening 4 a of the nozzle 4 from below by covering the lower end opening of the main body 41 of the nozzle 4. The hook-shaped portion 512 is in contact with the lower end surface of the main body portion 41.
The mesh member 52 has the same shape and size as the mesh member 51, and includes a mesh body 521 and a hook-like portion 522. The net body 521 covers the tip opening 4b of the nozzle 4 from above.

The sponge-like member 53 is made of, for example, urethane foam and has an appropriate thickness (length in the vertical direction). The sponge-like member 53 is interposed between the net bodies 511 and 521 and covers each of the net bodies 511 and 521.
The spacers 54 and 55 each have a vertical cylindrical shape, and are made of, for example, synthetic rubber.
The spacer 54 is interposed between the flange portions 512 and 522. The spacer 54 suppresses the sponge-like member 53 from being crushed between the net bodies 511 and 521.

The lower end portion of the spacer 55 is placed on the step portion 421 of the tip end portion 42 of the nozzle 4. On the upper end portion of the spacer 55, a hook-shaped portion 522 is placed.
In other words, the spacer 55 is disposed between the end opening 4b side and the mesh member 52. The spacer 55, the mesh member 52, the spacer 54, and the mesh member 51 are placed on the step portion 421 in this order.
The mesh member 52 is spaced apart from the tip opening 4b by an appropriate length by a step 421 and a spacer 55. As a result, a space 40 is formed between the mesh member 52 and the tip opening 4b in the tip portion 42.

The liquid tank 61 stores a cleaning liquid (in this embodiment, tap water).
The detergent tank 62 stores a liquid detergent having an appropriate concentration.
The solenoid valve 63 is a three-port solenoid valve. The supply pipe 600 is connected to the gas pump 64 and the liquid pump 65 via the electromagnetic valve 63.
The gas pump 64 pumps gas (air in this embodiment).
The liquid pump 65 pumps the cleaning liquid in the liquid tank 61.
The detergent pump 66 pumps the liquid detergent in the detergent tank 62.
The electromagnetic valve 63, the gas pump 64, and the liquid pump 65 function as a gas-liquid supply unit in the embodiment of the present invention.
The detergent pump 66 functions as a liquid supply unit in the embodiment of the present invention.

The control unit 67 is a control center of the foam cleaning apparatus 1 and controls the operation of each of the electromagnetic valve 63 to the detergent pump 66 in accordance with a computer program and data stored in a storage unit (not shown). Control of each part of the foam cleaning apparatus 1 by the control unit 67 is performed at a predetermined timing (for example, when a user operates an operation unit (not shown), a time measurement unit (not shown) measures a predetermined time, or a clock unit (not shown)). Automatically) (for example, when indicates a predetermined time).
The user of the foam cleaning apparatus 1 may manually control the operation of each part of the foam cleaning apparatus 1 by operating the operation unit.

Next, a procedure for cleaning the floor F by the foam cleaning apparatus 1 will be described.
First, the control unit 67 turns on the gas pump 64 and the detergent pump 66 and switches the electromagnetic valve 63 so that the supply pipe 600 and the gas pump 64 are connected. At this time, the cleaning of the floor F by the foam cleaning apparatus 1 is started.
The gas pumped by the gas pump 64 is supplied to the gas pipe 2 through the electromagnetic valve 63 and the supply pipe 600. The gas sent under pressure flows through the gas pipe 2 and is supplied to the nozzles 4, 4,... Connected to the gas pipe 2. The gas flowing through the gas pipe 2 has a low flow rate to such an extent that the liquid detergent dripped from the liquid pipe 3 is not blown out to other than the foaming part 5.

The liquid detergent pumped from the detergent tank 62 by the detergent pump 66 is supplied to the liquid pipe 3 through the supply pipe 601. The liquid detergent thus pumped flows through the liquid pipe 3 and is discharged from each discharge hole 3a. The discharged liquid detergent travels along the outer peripheral surface of the tubular member 31 of the liquid pipe 3 and then drops onto the foaming portion 5 built in each nozzle 4.
As a result, the gas and the liquid detergent are supplied from the gas pipe 2 and the liquid pipe 3 to the foaming section 5 built in each nozzle 4.

The liquid detergent supplied to the foaming unit 5 adheres to the mesh member 51, the mesh member 52, or the sponge member 53. The gas supplied to the foaming part 5 passes through the mesh member 51, the sponge member 53, and the mesh member 52, and is blown toward the floor F through the tip opening 4 b of the nozzle 4. As a result, the liquid detergent is mixed with gas in the mesh member 51, the mesh member 52, or the sponge member 53. At this time, bubbles of liquid detergent are generated.
The foam generated in the foaming part 5 is temporarily stored in a space 40 provided in the nozzle 4 and then discharged to the floor F through the tip opening 4 b of the nozzle 4. If the space 40 does not exist, the mesh member 52 closes the tip opening 4b, so that the foam ejection efficiency may be reduced. Further, since the generated bubbles are immediately discharged from the nozzle 4, it is difficult to stably discharge a certain amount of bubbles.
The foam discharged to the floor F diffuses into the floor F and cleans the floor F.

  The amount of foam discharged from each nozzle 4 and the foam quality are uniform. This is because the amount of dripping from each discharge hole 3a of the liquid pipe 3 is equal, the amount of gas flowing into each nozzle 4 is the same, and the structure of each nozzle 4 is the same. Here, the uniform foam quality means that there is no difference in the particle diameter, concentration, hardness, or the like of the foam discharged from each nozzle 4. Therefore, the cleaning efficiency of the floor F is higher than the case where the amount of foam discharged from each nozzle 4 and / or the foam quality is not uniform.

By the way, when the foam-like liquid detergent is supplied to the floor F as compared with the case where the liquid detergent is supplied to the floor F in a liquid state, the adsorbing action of the pollutants by the foam occurs more efficiently. The cleaning efficiency of F is high. For this reason, it is necessary to suppress that the liquid detergent dripped from the liquid pipe 3 is discharged from the nozzle 4 without foaming in the foaming part 5.
In the present embodiment, since the liquid droplets discharged from the liquid discharge hole 3 a of the liquid pipe 3 are dropped after passing through the outer peripheral surface of the tubular member 31, they are directly dropped from the liquid discharge hole 3 a to the foaming portion 5. Compared with the case, it is suppressed that liquid detergent passes through the foaming part 5 without foaming. Moreover, since the dropped liquid detergent is received by the mesh member 51, the sponge member 53, or the mesh member 52, the liquid detergent is prevented from being ejected from the nozzle 4 without foaming.

More specifically, the liquid detergent attached to the mesh members 51 and 52 is more likely to foam than the liquid detergent attached to the sponge member 53. On the other hand, the sponge-like member 53 contributes to the suppression of unnecessary flow of the liquid detergent before foaming more than the net-like members 51 and 52.
Since the sponge member 53 is not crushed between the mesh members 51 and 52, the gas passage efficiency of the sponge member 53 is high. If the sponge-like member 53 is crushed, it becomes difficult for gas to pass through the sponge-like member 53, so that the ejection of bubbles is hindered.
In addition, as long as the foaming part 5 can prevent the unnecessary discharge | emission of liquid detergent reliably, the discharge hole 3a of the liquid pipe 3 may open directly downward.

Next, the control unit 67 turns off the gas pump 64 and the detergent pump 66, turns on the liquid pump 65, and switches the electromagnetic valve 63 so that the supply pipe 600 and the liquid pump 65 are connected.
The cleaning liquid pumped by the liquid pump 65 is supplied to the gas pipe 2 through the electromagnetic valve 63 and the supply pipe 600. The cleaning liquid thus pumped flows through the gas pipe 2 and is supplied to the nozzles 4, 4,... Connected to the gas pipe 2.
The cleaning liquid supplied to each nozzle 4 passes through the foaming portion 5 and is discharged to the floor F through the tip opening 4 b of the nozzle 4.
The cleaning liquid discharged to the floor F diffuses into the floor F and cleans the floor F. At this time, the foam adhering to the floor F is washed away. The cleaning liquid and foam flow into the sewer through a drainage groove (not shown).

Finally, the control unit 67 turns off the liquid pump 65. At this time, the cleaning of the floor F by the foam cleaning apparatus 1 is completed.
The cleaning liquid is not limited to tap water. For example, when the disinfecting liquid is used as the cleaning liquid, the removal of the bubbles from the floor F and the disinfection of the floor F are performed simultaneously. Alternatively, after the tap water is pumped to the gas pipe 2 and the floor F is washed, the disinfecting liquid is pumped to the gas pipe 2 to disinfect the floor F.
The gas for foaming the liquid detergent is not limited to air, but air is the cheapest and safest.

In the foam cleaning apparatus 1 as described above, the liquid pipe 3 is inserted into the gas pipe 2, and the foaming part 5 is built in each nozzle 4. That is, the liquid pipe 3 is not exposed, and there is no pipe connecting the nozzle 4 and the foaming portion 5. Further, each nozzle 4 is in a vertical posture. Accordingly, foreign substances are unlikely to accumulate in the foam cleaning apparatus 1 and are easy to clean because there are few places to be cleaned. That is, the foam cleaning apparatus 1 is sanitary.
Moreover, since the gas pipe 2 in which the liquid pipe 3 is incorporated is easy to reduce in size as compared with, for example, a block body in which liquid and gas passages are arranged in parallel, the foam cleaning apparatus 1 is configured in a compact manner.

  When it is desired to expose the liquid pipe 3, the user may separate the tubular members 21, 21 from each other with the joint 22 of the gas pipe 2. At this time, since the joint 32 of the liquid pipe 3 is exposed, the gas pipe 2 and the liquid pipe 3 can be easily extended or shortened.

  The liquid detergent flows through the liquid pipe 3, and the gas flows between the inner peripheral surface of the gas pipe 2 and the outer peripheral surface of the liquid pipe 3. That is, since liquid detergent and gas are individually supplied to each foaming part 5, it supplies to each foaming part 5 compared with the case where liquid detergent and gas are mixed and supplied to each foaming part 5. Unnecessary foaming of the liquid detergent before being used is suppressed. Therefore, there is no possibility that the bubbles generated unnecessarily hinder the supply of the liquid detergent and gas to each foaming part 5. In other words, since the supply efficiency of the liquid detergent and gas to each foaming part 5 is high, the supply efficiency of foam to the floor F is improved. As a result, the workability of the cleaning work can be improved.

  The outer shape and the inner shape of each of the tubular members 21 and 31 in the present embodiment are both circular, but either one or both of the outer shape and the inner shape may be other than a circular shape (for example, a rectangular shape). However, it is desirable that the outer shape of the tubular member 31 is circular because the liquid detergent needs to travel along the outer peripheral surface.

The cleaning liquid flushes the floor F, and also flushes the inside of the gas pipe 2, the outside of the liquid pipe 3, the nozzles 4, 4,..., And the foamed portions 5, 5,. The inside of the liquid pipe 3 that is running cannot be washed away. Therefore, it is conceivable to supply the cleaning liquid not to the gas pipe 2 but to the liquid pipe 3.
However, since the liquid pipe 3 uses a drip tube, the momentum of the cleaning liquid discharged from the nozzle 4 is weak compared to the case where the cleaning liquid is supplied to the gas pipe 2, and this hinders the cleaning of the floor F. There is a risk of coming. That is, the configuration of the present embodiment in which the cleaning liquid is supplied to the gas pipe 2 is more advantageous in terms of cleaning efficiency of the floor F.

The embodiment disclosed this time is to be considered as illustrative in all points and not restrictive. The scope of the present invention is not intended to include the above-described meanings, but is intended to include meanings equivalent to the claims and all modifications within the scope of the claims.
In addition, as long as the effects of the present invention are obtained, the foam cleaning apparatus 1 may include components that are not disclosed in the embodiment.

DESCRIPTION OF SYMBOLS 1 Foam washing apparatus 2 Gas pipe 21 Tubular member 22, 32 Joint 3 Liquid pipe 31 Tubular member (drip tube)
3a Discharge hole 4 Nozzle 4a Base end opening 4b Front end opening 5 Foamed portion 51, 52 Net-like member 53 Sponge-like member 54, 55 Spacer 63 Solenoid valve (gas-liquid supply portion)
64 Gas pump (gas-liquid supply part)
65 Liquid pump (gas-liquid supply part)
66 Detergent pump (liquid supply part)
F floor (cleaning target)

Claims (7)

A gas pipe through which gas flows;
A liquid pipe through which liquid detergent flows,
A foaming portion that generates bubbles when gas and liquid detergent are supplied from the gas pipe and the liquid pipe, and
In the foam cleaning apparatus for discharging the foam generated in the foaming part to the cleaning target,
The foam cleaning apparatus, wherein the liquid pipe is inserted into the gas pipe. A plurality of the foamed portions;
The foam cleaning apparatus according to claim 1, further comprising a plurality of nozzles that contain the foaming part and discharge the foam generated in the foaming part to an object to be cleaned. The liquid pipe uses a drip tube in which a plurality of liquid discharge holes are arranged in parallel in the length direction of the liquid pipe,
The nozzle is connected to the gas pipe such that a base end opening of the nozzle is located below the discharge hole,
3. The foam cleaning apparatus according to claim 2, wherein the liquid detergent discharged from each liquid discharge hole is dropped onto a foaming portion built in a lower nozzle. Each liquid discharge hole is located outside the range facing the base end opening of the lower nozzle in the liquid pipe,
4. The liquid detergent discharged from each liquid discharge hole is dropped onto a foamed portion built in the lower nozzle after passing through the outer peripheral surface of the liquid pipe. Foam cleaning equipment. The foamed part is
Two mesh members respectively covering the proximal end opening and the distal end opening of the nozzle;
A sponge member that covers the two mesh members between the two mesh members;
5. The spacer according to claim 2, wherein spacers are arranged between the two mesh members and between the tip opening side and the mesh member covering the tip opening. 6. The foam cleaning apparatus described. The gas pipe allows both gas and cleaning liquid to flow,
A gas-liquid supply unit that exclusively executes supply of gas to the gas pipe and supply of cleaning liquid; and
The foam cleaning apparatus according to any one of claims 2 to 5, further comprising a liquid supply unit that executes supply or stop of supply of the liquid detergent to the liquid pipe. Each of the gas pipe and the liquid pipe is formed by connecting a plurality of tubular members with joints that can be connected / separated,
The foam cleaning apparatus according to any one of claims 1 to 6, wherein the joint of the gas pipe is disposed at a position where the joint of the liquid pipe is exposed when the joint is separated.

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