JP3510099B2 - Wind nozzle device for carpet cleaner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of carpet cleaners for cleaning carpets with high-temperature, high-pressure steam (cleaning water), and specifically, a window nozzle device suitable for use in carpet cleaners. It is about.

[0002]

2. Description of the Related Art FIG. 7 shows, for example, JP-A-60-92724.
FIG. 1 is a schematic view of a conventional carpet cleaner seen in Japanese Patent Publication No. JP-A No. 2004-242242, in which 1 is a body of the carpet cleaner, 1A and 1B are a supply tank and a recovery tank, and a CW.
And DW are wash water and dirty water stored and collected in the insides 1X and 1Y of these tanks 1A and 1B, respectively, and E is a container used when supplying wash water CW (hot water) containing a detergent.

Further, 2P is a pump for supplying high-pressure cleaning water CW taken from an inlet 2 provided at an inner bottom portion of the supply tank 1A to a water supply pipe 3 side formed by using a flexible hose, and 4 is a water supply pipe 3 The cleaning water CW housed in the supply tank 1A, which is a heater attached to the peripheral surface on the root end 3A side of
By these pumps 2P and heater 4, high-temperature and high-pressure washing water of about 80 ° C. is formed, and then, as shown in FIGS. 8 and 9, it is attached to the manifold pipe 3X connected to the tip 3S of the water supply pipe 3 in communication therewith. Multiple injection nozzles 3
From N ..., As shown by the symbol CWa, each is in the form of a shower and is configured to be jetted vigorously toward the carpet DC.

Also in FIG. 7, 6 is a vacuum pump, 6T is a vacuum cylinder that exerts a strong vacuum force (suction force) by the vacuum pump 6 on the inside 1Y of the recovery tank 1B, and 6A is the vacuum cylinder 6T. The automatic water absorption stop device 5 attached to the upper end is a pipe-structured hand member in which the root end 5A is connected to the recovery tank 1B and the vacuum head 5T is provided at the front end. The generated strong vacuum action reaches the vacuum head 5T at the tip through the hand member 5, and as shown in the sectional view of FIG.
Is configured to suck and recover the dirty water DW that has been washed with the high-temperature and high-pressure washing water CWa jetted from the carpet DC toward the carpet DC from the suction port 5D into the collection tank 1B with its strong suction force. .

Incidentally, in FIGS. 7 to 9, 5X and 5X are cover plates attached to the left and right sides of the vacuum head 5T, respectively.
Reference numeral 3H indicates a band for fixing the water supply pipe 3 to the above-mentioned hand member 5, and CK indicates a carpet cleaned by cleaning.

Further, in FIG. 7, 3 V is an opening / closing valve provided in the water supply pipe 3 described above, and 3 L is this opening / closing valve 3.
Wand lever for opening and closing V, 7 is recovery tank 1B
A shielding plate provided inside, a drain valve 8 and a waste water recovery container F.

In the above structure, the vacuum pump 6 is driven and rotated to suck the suction port 5D of the vacuum head 5T.
When the open / close valve 3V is opened by grasping the window lever 3L while exerting a strong vacuum force on the valve, the high temperature / high pressure wash water heated to about 80 ° C. passes through the water supply pipe 3 and the manifold as shown in FIG. A plurality of jet nozzles 3N attached to the pipe 3X are jetted vigorously as shown by the reference numeral CWa to wash the carpet DC, and at the same time, the dirty water DW generated by this washing is used as a source of the suction port 5D of the vacuum head 5T. It is designed to be sucked from and collected in the collection tank 1B.

Further, when the dirty water DW is sucked by the above-mentioned vacuum head 5T, in order to exert a strong vacuum force at the suction port 5D in a stable state, as shown in FIG. 8 and FIG. By forming the lower end contact surface 5Dc on the inner edge side of the mouth 5D to be slightly shorter than the lower end contact surface 5Tc on the outer edge side, the suction opening 5D is formed on the carpet D.
When pressed against the surface of C, a slight gap is formed inside so that outside air can be sucked.

[0009]

However, in the conventional carpet cleaner configured as described above, it is difficult to move the vacuum head 5T while always keeping the gap of the suction port 5D constant, and the vacuum head 5T is difficult to move.
Depending on the angle at which the carpet DC is pressed against the surface of the carpet DC, the gap may be completely blocked by the carpet DC, and a sufficient suction action may not be exhibited.

Further, in the conventional carpet cleaner described above, the cleaning water C sprayed from the plurality of spray nozzles 3N ...
Since Wa is a high temperature and high pressure, this cleaning water CWa hits the surface of the carpet DC and blows up in a mist form, and the condition of cleaning and sewage suction by the window nozzle device is not clearly seen by the mist or air. There was also a problem that secondary contamination was caused by the diffusion of detergent into the inside.

In addition, in the conventional carpet cleaner described above, a plurality of injection nozzles 3N ...
When the supply of the cleaning water CW is stopped, the cleaning water remaining in the manifold pipes 3X leaks little by little from each of the injection nozzles 3N ... When it is slightly inclined to one side, the air is sucked from the upper injection nozzle 3N, and the cleaning water accumulated in the manifold pipe 3X and the injection nozzle 3N flows out from the lower injection nozzle 3N at once. There was a problem that the cleaning water stains the surrounding area.

Further, in order to prevent clogging of each of the injection nozzles 3N ... Attached to the manifold pipe 3X, a strainer is attached to each of the injection nozzles 3N .. There is also a problem that the manufacturing cost becomes high because the parts cost and the assembly cost are required.

Therefore, the technical problem of the present invention is that when cleaning a carpet using a carpet cleaner, the carpet is moved while ensuring a constant gap between the suction ports of the vacuum head, and a strong vacuum is applied to the carpet. The effect can be exhibited in a stable state, and at the time of washing, high-temperature and high-pressure washing water hits the carpet and is sprayed in a mist state, and the detergent is prevented from diffusing into the air, so that the carpet can be washed safely and , Hygienic.

Further, another technical problem of the present invention is that it remains inside the manifold pipe and the injection nozzle both when the supply of washing water is stopped and when the manifold pipe is inclined. This is to prevent the cleaning water that is present from leaking from the jet nozzle, and to make it possible to eliminate clogging of the jet nozzle and to clean the nozzle very easily and reliably.

[0015]

[Means for Solving the Problems] Means taken in the present invention for solving the above technical problems are as follows.

High temperature from the jet nozzle to the carpet
In a carpet cleaner configured to suck the dirty water with a strong vacuum force acting on the suction port of the vacuum head while spraying and cleaning high-pressure cleaning water,

(1) Of the suction ports of the vacuum head, which are generally elongated horizontally, the inner edge of the suction port is formed shorter than the outer edge of the suction port for suction between the lower end contact surface of the inner edge and the carpet surface. On the other hand, the injection nozzle and the cover body surrounding the injection nozzle are provided inside the vacuum head, and the lower end contact surface of the cover body is the same as the lower end contact surface of the outer edge forming the suction port. At the same time as forming the level, provide an air introduction hole on the wall surface of the cover body.
(Claim 1)

(2) The air introduction hole provided on the wall surface of the cover body is formed in a shape that is inclined obliquely downward from the outside toward the inside. (Claim 2)

(3) A manifold pipe is communicatively connected to the water supply pipe for supplying the high-temperature, high-pressure cleaning water, and a plurality of injection nozzles are attached at intervals in the longitudinal direction of the manifold pipe, and at the same time, the manifold pipe is connected. Both ends of the inside are closed with blocking plugs, and the windings are normally in close contact with each other by elasticity so that the washing water supply port and the above injection nozzles and the injection nozzles are not in communication with each other. When water is supplied to the cleaning steam, a close contact coil spring configured to expand the space between the windings by the water pressure so that the water supply port and each injection nozzle can communicate with each other is fitted. (Claim 3)

(4) A cover body having a lower end opened is attached to the inside of the vacuum head, and a manifold pipe having a plurality of injection nozzles is provided inside the cover body. (Claim 4)

(5) An injection in which a close contact coil spring is movably fitted inside the manifold pipe and a plurality of axial lengths when the close contact coil spring is in close contact are attached from at least one inner end of the manifold pipe. Of the nozzles, the length should be such that it extends to the front of the injection nozzle attached to the farthest end on the other end side. (Claim 5)

(6) Closing one or both ends of the manifold pipe with a removable plug.
(Claim 6)

(7) The entire cover body is made of a transparent synthetic resin plate having flexibility. (Claim 7)

[0024]

According to the means of claim 1 described in the above (1), when the carpet is washed while moving the jet nozzle and the vacuum head, the gap of the suction port provided in the vacuum head is provided outside the suction port. The bottom edge contact surface on the edge side and the bottom edge contact surface of the cover attached to the inside of the suction port are supported at two points in front and behind to ensure a constant level, so a strong vacuum action is always exerted on the carpet surface to collect dirty water. Along with being able to suck, the high temperature
Since the cover body covers the spray of high-pressure washing water and prevents its scattering, the washing condition can be easily confirmed from the outside, and the detergent is prevented from diffusing into the air to prevent secondary contamination. On the other hand, since the cover body cuts off the contact between the sprayed cleaning water and the outside air to prevent the temperature from lowering, it becomes possible to exhibit a superior cleaning action by the high-temperature cleaning water. In addition, by providing an air introduction hole in the cover body
More stable air flow and flow of sprayed cleaning steam
Can be made.

According to the second aspect of the invention described in (2) above, the air is introduced (induced) from the air introduction hole inclined downward.
The generated air can introduce a strong airflow near the carpet surface, which makes it possible to improve the cleaning power of high-temperature and high-pressure cleaning water and the recovery performance of dirty water after cleaning.

According to the fourth aspect of the invention described in (3) above, when the high-temperature and high-pressure cleaning water is supplied, the contact pressure of the close contact coil spring in the manifold pipe is expanded by the water pressure so that the gap between the windings is increased. Expanding, the wash water supply port and each injection nozzle are in communication with each other, so high temperature and high pressure wash water that is pressure-fed through the water supply pipe is injected from each injection nozzle,
While the carpet surface can be cleaned cleanly, when the supply of the cleaning water is stopped, the close contact coil spring in the manifold pipe contracts by its own elasticity to stick the windings together, and between the water supply port and each injection nozzle, and , The nozzles remain in the manifold pipe and each jet nozzle when the supply of washing water is stopped and when the manifold pipe is tilted so that the jet nozzles are not in communication with each other. It makes it possible to maintain the washing water in each state without leaking.

According to the fourth aspect of the invention described in (4) above, since the cover body covers the rising of the high-temperature and high-pressure cleaning water sprayed from each spray nozzle, the scattering of the cleaning water is prevented. The state of cleaning can be easily confirmed from the outside, and the detergent can be prevented from diffusing into the air to prevent secondary contamination, while the cover body prevents contact between the sprayed cleaning water and the outside air. In order to prevent the temperature from lowering, it is possible to exhibit a superior cleaning action with high-temperature cleaning water.

According to the means of claim 5 described in the above (5), the contact coil spring is expanded and contracted in the axial direction inside the manifold pipe to inject high-temperature, high-pressure cleaning water from each injection nozzle. The cleaning water remaining inside the manifold pipe or inside each injection nozzle can be stored in each of them without flowing out to the outside, and the contact coil spring deviates to one side inside the manifold pipe at the time of contact. Even if it moves to the position, the injection nozzle at the farthest end on the opposite side will only come off the contact coil spring, and two or more injection nozzles on the opposite side will not be in communication at the same time. Irrespective of the above, it is possible to prevent the washing water accumulated in the manifold pipe or the injection nozzle from flowing out and maintain the accumulated state.

According to the means of claim 6 described in the above (6), when the amount of dust adhering to the inside of the manifold pipe or the close contact coil spring increases and the injection amount of cleaning water decreases,
The inside of the manifold pipe can be easily cleaned by removing the plugs at one or both ends of the manifold pipe and taking out the internal coil spring, and dust inside the coil coil spring can be pulled by winding both ends of the coil coil. By widening the gap between the lines, it is possible to easily wash with tap water.

According to the means of claim 7 described in (7) above, since the inside of the cover body can be checked from the outside through the transparent plate, the washing water is jetted from the jet nozzle. If not, or various problems such as insufficient suction of dirty water due to blockage of the suction port can be easily detected from the outside, and the flexibility of the cover body allows carpets and surrounding furniture to be cleaned. Allows you to clean and gently clean without scratching.

As described above, the above (1)-
By solving the above-mentioned technical problem by means of (7),
It is possible to solve the problems of the conventional technology.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a window nozzle device for a carpet cleaner according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic view for explaining the entire configuration of the present invention.
2 is a perspective view of an essential part of the present invention as seen from the bottom side, FIG. 3 is a sectional view of the essential part of the present invention, and FIGS. 4 to 6 are sectional views of the injection nozzle portion, In the description, the members having the same configurations as those of the conventional device shown in FIGS. 7 to 9 are given the same reference numerals, and the description of the configuration and operation is omitted. Here, the features of the present invention will be described. Will be explained only.

In FIGS. 1 to 3, 9 is the inner surface of the vacuum head 5T, specifically, the left and right cover plates 5S,
A cover body having an open bottom structure attached to the portion 5S. The cover body 9 is formed into a substantially U-shaped cross section by using a transparent plate made of synthetic resin having flexibility such as soft vinyl chloride. The cleaning water CWa is formed so that the high-temperature and high-pressure cleaning water CWa is vigorously injected toward the inside 9A from an injection nozzle described later.

Further, 9c is a lower end contact surface of the cover body 9, and the contact surface 9c and the lower end contact surface 5Tc on the outer side of the suction port 5D are at the same level. It is formed to be a little longer than the surface 5Dc, and the gap between the contact surface 5Dc and the surface of the carpet DC is always kept constant by the front and rear lower end contact surfaces 5Tc and 9c.

Reference numerals 9H, ... Are air introduction holes formed in the wall surface of the cover body 9 with a slight inclination downward while facing the floor surface. When the high-pressure cleaning water CWa is sprayed, the outside air is introduced (attracted) from these air introduction holes 9H ... to the floor surface, that is, the surface of the carpet DC, forming a strong wind velocity. Carpet D with the above washing water CWa
The structure is such that the cleaning effect of C is enhanced and the collecting performance of the dirty water DW by the vacuum head 5T is enhanced.

As described above, the air introducing holes 9H ... serve to introduce the outside air, but since the outside air is sequentially attracted from the gaps between the long hairs of the carpet DC, the air introducing holes are intentionally provided in the cover body 9. Of course, the desired cleaning effect and sewage recovery effect can be exhibited without providing 9H. (See claim 4)

2 to 6, 3X is a manifold pipe connected to the tip 3S of the water supply pipe 3 through the water supply port 3Xa, and 3XT and 3XT are screwed into both end ports of the manifold pipe 3X. It is a plug for removably attached by means such as the above, and is described above in the longitudinal direction of the bottom surface of the manifold pipe 3X which is laterally laid across the inside 9A of the cover body 9 as shown in FIGS. As shown in FIGS. 2 and 4 to 6, a plurality of injection nozzles 3N are mounted at equal intervals (four in the case of the drawings), and high-temperature / high-pressure cleaning is sent through the water supply pipe 3. The water is configured to be jetted vigorously as indicated by the symbol CWa.

In FIG. 4 to FIG. 6, 3P is a close contact coil spring fitted tightly in the inside 3R of the manifold pipe 3X and movably left and right.
This contact coil spring 3P with Pa and 3Pa attached, as shown in FIG. 5, keeps the windings in close contact with each other by elasticity during normal operation (when high temperature and high pressure wash water is not supplied) shown in FIG. Central water inlet 3Xa and each injection nozzle 3N ...
, And each of the injection nozzles 3N ... Are not in communication with each other, but at the time of supplying high-temperature and high-pressure cleaning water shown in FIG. 6, as shown in FIG. The steam water supply port 3Xa and each injection nozzle 3N
.. are made to communicate with each other, and the high-temperature, high-pressure cleaning water CWa is vigorously ejected from the respective ejection nozzles 3N.

The axial length of the contact coil spring 3P configured as described above when in contact (FIG. 5) is at least from one end of the interior 3R of the manifold pipe 3X to the end on the other end side. Even if the close contact coil spring 3P moves to one side of the inside 3R of the manifold pipe 3X while being used, even if the contact coil spring 3P moves to the front side of the injection nozzle 3N, it is The structure is such that one or more injection nozzles 3N ... Are not in the communicating state at the same time.

4 to 6, reference numerals 3Ra ... Are mounting holes formed on the bottom surface of the manifold pipe 3X at equal intervals, and the injection nozzles 3N are provided in the respective mounting holes 3Ra.
The upper end neck portion 3Na of ... Is fitted and attached.

Since the window nozzle device for carpet cleaner according to the present invention has the structure as described above, when the carpet DC is washed and the dirty water is sucked, it is placed between the suction port 5D of the vacuum head 5T and the carpet DC. The formed gap for suction is connected to the front and rear lower end contact surfaces 5Tc.
And 9c, it is possible to ensure a constant level at all times, so that a strong vacuum action is exerted on the suction port 5D, and the cleaning dirty water DW is effectively sucked to collect the recovery tank 1B.
Can be collected.

When the high-temperature, high-pressure cleaning water CWa is sprayed onto the carpet DC from the spraying nozzles 3N, the outside air is attracted by the high-pressure spraying cleaning water CWa and the outside air passes through the air introducing holes 9H. Since it is vigorously introduced toward the carpet DC, the cleaning water CWa can be more strongly sprayed onto the carpet DC surface to exert an excellent cleaning effect, and the collection performance of the dirty water by the vacuum head 5T can be further enhanced.

Further, in the case of cleaning with the cleaning water CWa, since the surroundings of the injection nozzles 3N ... Are covered by the cover body 9, the spray of water mist is prevented and the diffusion of the detergent into the air is prevented. It is possible to prevent the secondary pollution, and in addition, by preventing contact between the cleaning water CWa and the outside air to prevent the temperature from decreasing, the cleaning effect by the cleaning water CWa can be further enhanced, and the cover body 9 is flexible. Since it is made of a transparent synthetic resin transparent plate, it is possible to clean the carpet DC and surrounding furniture without damaging it, and check the internal cleaning and sewage suction conditions. It is possible to easily find various troubles such as drainage of water and blockage of the suction port 5D.

In addition, according to the invention, the manifold pipe 3
Since the close contact coil spring 3P fitted in the X makes the non-communication state between the wash water supply port 3Xa and each injection nozzle 3N ... And between each injection nozzle 3N ... It is possible to solve the problem that the cleaning water remaining in the manifold pipe 3X or each of the injection nozzles 3N ... At the time of stoppage flows out from the injection nozzle 3N and pollutes the surroundings.

When dust is accumulated inside the close contact coil spring 3P or the manifold pipe 3X and the injection amount of the cleaning water CWa drops, one or both plugs 3XT of the manifold pipe 3X are removed and the close contact coil spring is released from the inside 3R. By pulling out 3P, this can be washed with tap water or the like to easily wash away dust.

[0046]

As described above, according to the window nozzle device for a carpet cleaner according to the present invention, the cleaning of the carpet by the carpet cleaner and the recovery of the dirty water can be performed by the strong cleaning water jet and the strong vacuum force. Due to the suction action, in a very stable state, even though it can hygienically proceed without damaging the carpet etc., since the washing water does not flow out from the injection nozzle when not washing, it does not pollute the surroundings. It is possible to exert an advantage that the carpet can be washed cleanly.

[Brief description of drawings]

FIG. 1 is a schematic diagram illustrating the overall configuration of a carpet cleaner including a window nozzle device according to the present invention.

FIG. 2 is a perspective view of a main part of the present invention viewed from the bottom side.

FIG. 3 is a cross-sectional view illustrating a main part of the present invention.

FIG. 4 is a partial cross-sectional front view showing an exploded view of a close contact coil spring and a manifold pipe to which an injection nozzle, which is an essential part of the present invention, is attached.

FIG. 5 is a partial cross-sectional front view illustrating the state of the close contact coil spring in the manifold pipe when the cleaning is not performed.

FIG. 6 is a partial cross-sectional front view explaining the state of the close contact coil spring in the manifold pipe during cleaning.

FIG. 7 is a schematic diagram illustrating the configuration of a conventional carpet cleaner.

FIG. 8 is a perspective view of a window nozzle device used in a conventional carpet cleaner as viewed from the bottom side.

FIG. 9 is a sectional view of a conventional window nozzle device.

[Explanation of symbols]

1 Carpet cleaner body 1A supply tank 1B recovery tank 2P pump 3 water supply pipe 3X manifold pipe 3Xa Wash water inlet 3XT stopper 3P close contact coil spring 3 Pa block plug 3N injection nozzle 4 heater 5 Hand parts 5T vacuum head 5D suction port 5Dc Inner end contact surface 5Tc Outside bottom contact surface 6 vacuum pump 9 cover body 9c Bottom contact surface 9H air inlet DC carpet CWa High temperature / high pressure cleaning water

Continuation of the front page (56) References JP-A-60-92724 (JP, A) Actual opening 60-57350 (JP, U) Actual opening 62-143462 (JP, U) Actual opening Flat 6-38849 (JP , U) Actual development Sho 51-121263 (JP, U) Actual development Sho 53-151265 (JP, U) Registered utility model 3024834 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47L 11/34 A47L 11/30

Claims (7)

(57) [Claims] 1. A carpet cleaner configured to spray high-temperature, high-pressure cleaning water from a spray nozzle onto a carpet to clean the carpet while sucking the dirty water with a strong vacuum force acting on a suction port of a vacuum head. In the suction port of the vacuum head that is elongated horizontally in its entirety, the inner edge of the suction port is formed shorter than the outer edge, and a suction gap is provided between the lower end contact surface of the inner edge and the carpet surface. On the other hand, the injection nozzle and the cover body surrounding the injection nozzle are provided inside the vacuum head, and the lower end contact surface of the cover body is at the same level as the lower end contact surface of the outer edge forming the suction port. A wind nozzle device for a carpet cleaner, which is formed and provided with an air introduction hole on a wall surface of a cover body. 2. An air introduction hole provided on the wall surface of the cover body,
The window nozzle device for a carpet cleaner according to claim 1, wherein the window nozzle device has a shape inclined obliquely downward from the outside toward the inside. 3. A carpet cleaner configured to spray high-temperature, high-pressure cleaning water from a spray nozzle onto a carpet to clean the carpet while sucking the dirty water with a strong vacuum force acting on a suction port of a vacuum head. In this case, a manifold pipe is connected to the water supply pipe for supplying the high temperature and high pressure cleaning water, and a plurality of injection nozzles are attached at intervals in the longitudinal direction of the manifold pipe.
Both ends of the manifold pipe are closed with blocking plugs, and the windings are normally in close contact with each other by elasticity to keep the space between the water supply port of the washing water and each of the above-mentioned injection nozzles and between the injection nozzles from each other. When the washing water is supplied,
A wound nozzle device for a carpet cleaner, characterized in that a close contact coil spring configured to expand the space between the windings by the water pressure so as to establish communication between the water supply port and each of the injection nozzles. 4. A carpet cleaner according to claim 3, wherein a cover body having a lower end opened is attached to the inside of the vacuum head, and a manifold pipe having a plurality of injection nozzles is provided inside the cover body. Nozzle device for car. 5. An injection nozzle in which a close contact coil spring is movably fitted inside the manifold pipe, and a plurality of axial lengths when the close contact coil spring is in close contact are attached from at least one inner end of the manifold pipe. The window nozzle device for a carpet cleaner according to claim 3, wherein the window nozzle device is configured to have a length up to the front of the injection nozzle attached to the outermost end of the other end. 6. The window nozzle device for a carpet cleaner according to claim 3, wherein one or both ends of the manifold pipe are closed by a removable plug. 7. The window nozzle device for a carpet cleaner according to claim 1, wherein the entire cover body is formed by using a transparent plate made of a flexible synthetic resin.