JP2007175122A - Wet type vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wet type vacuum cleaner which is miniaturized and can ensure operation time as well as perform a wash-finishing. <P>SOLUTION: This wet type electric vacuum cleaner is equipped with a washing liquid jetting nozzle 51, a function nozzle 11, a suction hose 12, a gas-water separator 13, an electric fan 15, a dirty water tank 14, a dirty water jetting nozzle 51, a suction force detecting means, a liquid feeding pump 53, a jetting amount controlling means, and a jetting liquid switching means 55. In this case, the washing liquid jetting nozzle 51 jets a washing liquid W. The suction nozzle 11 sucks water or the like. The suction hose 12 conducts a mixed stream A which has been sucked in from the suction nozzle 11. The gas-water separator 13 separates the mixed stream A into contamination or the like. The electric fan 15 sucks in/discharges air C' which has been separated from the mixed stream A by the gas-water separator 13. The dirty water tank 14 stores dirty water B which has been separated from the mixed stream A by the gas-water separator 13. The dirty water jetting nozzle 51 jets the dirty water B which has been stored in the dirty water tank 14. The suction force detecting means detects the suction force of the air C' which has been sucked in from the suction nozzle 11. The liquid feeding pump 53 which jets the washing liquid W or the dirty water B. The jetting amount controlling means controls the jetting amount of the washing liquid W or the dirty water B which is jetted from the liquid feeding pump 53. The jetting liquid switching means 55 switches the jetting of the washing liquid W from the washing liquid jetting nozzle 51 and the jetting of the dirty water B from the dirty water jetting nozzle 51. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wet type vacuum cleaner that injects a cleaning liquid onto an object to be cleaned and sucks dirt on the object to be cleaned together with moisture and air.

  2. Description of the Related Art Conventionally, a wet type vacuum cleaner that uses a cleaning liquid to spray an object to be cleaned and sucks dirt on the object to be cleaned together with moisture and air has been used. In such a wet type vacuum cleaner, it becomes impossible to use when the cleaning liquid is exhausted, but a wet type vacuum cleaner is disclosed in which the cleaning liquid can be used repeatedly and the usage time is extended (see Patent Document 1 below).

  The wet type vacuum cleaner described in Patent Document 1 includes a main tank in which a cleaning liquid is stored and a filter that filters the cleaning liquid. The cleaning liquid in the main tank is sprayed on an object to be cleaned, and the sprayed cleaning liquid is cleaned. By sucking them together and collecting them in the main tank, the cleaning liquid is used repeatedly, thereby extending the usage time. In addition, the cleaning liquid is filtered by a filter so that the cleaning liquid can be used repeatedly.

JP 2004-141845 A

  However, even if the cleaning liquid is filtered, its cleaning effect is limited, and the cleaning liquid in the main tank is contaminated by repeated use. As a result, there is no cleaning liquid (unused) in the main tank. It will not exist. Therefore, it is not possible to finish the object to be cleaned with a cleaning liquid that is not dirty at all. Patent Document 1 also describes a mode in which a sub tank in which a cleaning finishing liquid is stored is provided in addition to the main tank. However, in this mode, it is necessary to store an extra cleaning finishing liquid. It is difficult to reduce the size of the wet vacuum cleaner.

  Therefore, the object of the present invention is to reduce the capacity of the cleaning liquid to reduce the size of the wet electric vacuum cleaner, to ensure a sufficiently long use time, and to perform cleaning with an unused cleaning liquid. It is in providing the wet-type vacuum cleaner which can do.

  The present invention is a wet type vacuum cleaner that injects a cleaning liquid onto an object to be cleaned and sucks dirt on the object to be cleaned together with moisture and air, a cleaning liquid injection nozzle that injects the cleaning liquid onto the object to be cleaned, water containing the cleaning liquid, and A suction nozzle for sucking dirt together with air; a suction hose for conducting a mixed flow of dirt, moisture and air sucked from the suction nozzle; and a steam-water separator for separating the mixed flow into dirt, moisture and air An electric fan that sucks and exhausts air separated from the mixed stream by the steam separator, and stores waste water that is a mixed water of dirt and moisture separated from the mixed stream by the steam separator. A sewage tank, a sewage injection nozzle for injecting sewage containing cleaning liquid stored in the sewage tank onto an object to be cleaned, suction force detection means for detecting the suction force of air sucked from the suction nozzle, and cleaning liquid or sewage Fountain And a spray amount control means for controlling the spray amount of the cleaning liquid or sewage sprayed from the liquid pump, and the cleaning liquid spray from the cleaning liquid spray nozzle and the sewage from the sewage spray nozzle The above-mentioned object is achieved by providing a wet type vacuum cleaner provided with a spray liquid switching means for switching between the above-described spraying.

  The present invention also relates to a wet type vacuum cleaner that is connected to an external air suction device and injects cleaning liquid onto an object to be cleaned and sucks dirt on the object to be cleaned together with moisture and air, and injects the cleaning liquid onto the object to be cleaned. A cleaning liquid jet nozzle, a suction nozzle that sucks moisture and dirt containing the cleaning liquid together with air, a suction hose that conducts a mixed flow of dirt, water, and air sucked from the suction nozzle, and the mixed stream becomes dirty and moisture. And a sewage tank for storing sewage which is a mixed water of dirt and moisture separated from the mixed flow by the steam / water separator. A sewage spray nozzle for spraying sewage containing the cleaning liquid stored in the sewage tank onto the object to be cleaned, a suction force detecting means for detecting a suction force of air sucked from the suction nozzle, and a cleaning liquid or sewage is jetted Do A liquid pump, and an injection amount control means for controlling an injection amount of the cleaning liquid or sewage injected from the liquid pump, and the cleaning liquid injection from the cleaning liquid injection nozzle and the sewage injection from the sewage injection nozzle The above object is achieved by providing a wet type electric vacuum cleaner provided with a jet liquid switching means for switching between the two.

  According to the wet vacuum cleaner of the present invention, it is possible to secure a sufficiently long use time while reducing the size of the wet vacuum cleaner by reducing the amount of cleaning liquid accommodated, and cleaning with an unused cleaning liquid. Can do.

Hereinafter, a preferred embodiment of the wet type vacuum cleaner of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the wet vacuum cleaner 1 of this embodiment is a wet vacuum cleaner that injects a cleaning liquid W onto an object to be cleaned and sucks dirt on the object to be cleaned together with moisture and air.

  The wet type vacuum cleaner 1 according to the present embodiment includes a cleaning liquid injection nozzle 51 that injects a cleaning liquid W onto an object to be cleaned, a suction nozzle 11 that sucks moisture and dirt including the cleaning liquid together with air, and dirt sucked from the suction nozzle 11. , A suction hose 12 for conducting the mixed flow A of moisture and air, a steam separator 13 for separating the mixed stream A into dirt, moisture and air, and air separated from the mixed stream A by the steam separator 13. An electric fan 15 that sucks and exhausts C ′, a sewage tank 14 that stores sewage B, which is a mixed water of dirt and moisture separated from the mixed flow A by the steam / water separator 13, and is stored in the sewage tank 14. The sewage spray nozzle 51 for spraying the sewage B containing the cleaning liquid W onto the object to be cleaned, the suction force detection means for detecting the suction force of the air C ′ sucked from the suction nozzle 11, and the cleaning liquid W or the sewage B are sprayed. Sending A pump 53, and a injection quantity control means for controlling the injection quantity of the washing liquid W or sewage B is injected from the liquid feed pump 53.

In the present embodiment, the cleaning liquid spray nozzle and the sewage spray nozzle are shared by one spray nozzle 51.
The suction nozzle 11 sucks moisture and dirt including the cleaning liquid W together with air. In the present embodiment, as shown in FIG. 1, the suction nozzle 11 is formed of a hollow body having a divergent shape in plan view, and its tip is open. The contact surface with the object to be cleaned. Inside the suction nozzle 11, as shown in FIG. 2, an ejection nozzle 51 that ejects the cleaning liquid W or the sewage B is provided.

As shown in FIGS. 1 and 2, the wet type vacuum cleaner 1 of the present embodiment includes a liquid supply tank 17 (details will be described later) for supplying the cleaning liquid W to the (cleaning liquid) injection nozzle 51, and an inside of the liquid supply tank 17. The liquid feed pump 53 that sends out the cleaning liquid W or the waste water B in the waste water tank 14, the first connection tube 54 that connects the liquid feed pump 53 and the switching valve 55, and the switching valve 55 and the liquid supply tank 17 communicate with each other. A second connection tube 56 that communicates with the switching valve 55 and the sewage tank 14, and a liquid feed tube 52 that feeds the cleaning liquid W or the sewage B to the injection nozzle 51 by driving the liquid feed pump 53. And are provided.
The liquid feeding tube 52 also serves as a cleaning liquid feeding pipe that feeds the cleaning liquid W to the (cleaning liquid) jet nozzle 51 and a sewage liquid feeding pipe that feeds the sewage B to the (sewage) jet nozzle 51.

  According to the switching valve 55, it is possible to switch between the first connection tube 54 and the second connection tube 56 or the first connection tube 54 and the third connection tube 57. In other words, the switching valve 55 is a spray liquid switching unit that switches between the spray of the cleaning liquid W from the (cleaning liquid) spray nozzle 51 and the spray of the dirty water B from the (sewage) spray nozzle 51.

  In the present embodiment, there is provided an injection liquid identification means that can identify which one of the injection of the cleaning liquid W from the (cleaning liquid) injection nozzle 51 and the injection of the sewage B from the (sewage) injection nozzle 51 is performed. . The jet liquid identification means is not particularly limited, and examples thereof include coloring of an identification display (lamp etc.) and generation of an identification sound. In the wet type vacuum cleaner, since the driving sound is not small, the identification display is preferable to the identification sound.

  As shown in FIGS. 1 and 2, the suction hose 12 communicates the suction nozzle 11 and the sewage tank 14, and introduces a mixed flow A of dirt, moisture and air sucked from the suction nozzle 11 into the sewage tank 14. Is.

  As shown in FIG. 1, the suction hose 12 and the liquid feeding tube 52 are exposed from the front surface of the housing 20, and both are connected to the suction nozzle 11 in parallel. It is preferable that all or part of the exposed range of the liquid feeding tube 52 is transparent or translucent so that the cleaning liquid W or the sewage B fed through the liquid feeding tube 52 can be visually recognized.

  The injection nozzle 51 is connected to the liquid supply tube 52, and the cleaning liquid W or the sewage B supplied from the liquid supply tube 52 is injected from the tip of the injection nozzle 51 toward the object to be cleaned. Yes. The injection nozzle 51 can be selected according to the object to be cleaned, such as a type in which the cleaning liquid or sewage is gently sprayed in a mist or a type in which the cleaning liquid or sewage is sprayed linearly and vigorously. In this embodiment, what is sprayed in mist form is used.

As shown in FIG. 2, one end 12 </ b> A of the suction hose 12 communicates with the inside of the suction nozzle 11, and the other end 12 </ b> B communicates with a sewage introduction port 14 </ b> A (details will be described later) of the sewage tank 14.
As the suction hose 12, a suction hose conventionally used for a wet vacuum cleaner can be used without any particular limitation. For example, the outer surface is a bellows-like hose, the outer surface is a bellows-like, and the inner surface is smooth. And a hose having a smooth outer surface. In the present embodiment, a hose having a bellows-like outer side and a smooth inner side is used from the viewpoint of preventing sewage from staying and adhering to the inner surface of the hose while ensuring the ease of bending of the hose.

  As shown in FIG. 2, the sewage tank 14 is a tank that stores sewage B that is a mixed water of dirt and moisture separated from the mixed stream A by the steam separator 13. As shown in FIG. 3, the sewage tank 14 is disposed in the sewage tank storage part 24B on the front side of the housing 20, and as shown in FIG. 7, the cross section expands from the bottom to the upper opening. It has a substantially cylindrical shape. The sewage tank 14 is formed of a transparent material so that the sewage B stored in the sewage tank 14 can be visually recognized.

  As shown in FIG. 7, a sewage introduction port 14 </ b> A that communicates with the other end portion 12 </ b> B of the suction hose 12 is provided above the outer peripheral surface 14 </ b> D of the sewage tank 14. Two positioning protrusions 14B are provided at the peripheral edge of the upper opening of the sewage tank 14 with a 180 ° gap in the circumferential direction. As shown in FIG. 3, the positioning overhanging portion 14B is fitted into a recess 24C provided in the sewage tank storage portion 24B of the housing 20, thereby positioning the sewage tank 14 with respect to the sewage tank storage portion 24B of the housing 20. It can be done.

As shown in FIGS. 2 and 7, a sewage discharge port 14 </ b> E that discharges sewage B from the inside is provided on the bottom surface 14 </ b> C of the sewage tank 14. An open / close valve 14F is provided at the sewage discharge port 14E.
Inside the sewage introduction port 14A of the sewage tank 14, an upper filter 18A is provided as a dirt removal mechanism for removing dirt that is about to pass through the sewage introduction port 14A. A bottom filter 18B is provided on the bottom surface 14C of the sewage tank 14 as a dirt removing mechanism for removing dirt from the sewage B that is about to pass through the sewage discharge port 14E. In addition to the filter, for example, a fine net can be used as the dirt removing mechanism.

  As shown in FIG. 2, the steam separator 13 has a function of separating the mixed flow A introduced through the suction hose 12 and the sewage tank 14 into dirt, moisture, and air. Will be described later.

The electric fan 15 (see FIG. 2, not shown in other than FIG. 2) is provided inside the housing 20 below the housing handle 25 provided at the upper center of the housing 20. As shown in FIG. 2, the electric fan 15 draws air from the suction part 15 </ b> A and discharges it from the exhaust part 15 </ b> B, thereby going from the suction nozzle 11 to the steam / water separator 13 via the suction hose 12 and the sewage tank 14. It generates a suction force for the path. The air C ′ sucked from the suction part 15A and from which the dirt and moisture are substantially separated from the mixed flow A is discharged from the exhaust part 15B into the outside air as shown in FIG.
As the electric fan 15, an electric fan having a power output of 1.5 kW or less is preferable in terms of compacting a wet vacuum cleaner or a general household, and depending on conditions such as the type of an object to be cleaned, The thing of 1.2 kW or less and the thing of 1.0 kW or less can be used.

  Between the discharge part 13C of the steam separator 13 and the suction part 15A of the electric fan 15, there is provided an exhaust filter 16 for separating a small amount of dirt and moisture remaining in the mixed flow A as shown in FIG. It has been. As the exhaust filter 16, a filter capable of separating a small amount of dirt and moisture from the mixed stream A can be used without any particular limitation.

  As shown in FIG. 9, leg portions corresponding to tank leg portions 77A to 77C and a liquid discharge port 78 (details will be described later) of the liquid supply tank 17 are provided at the bottom of the liquid supply tank storage portion 21 of the housing 20, respectively. Fitting portions 21A to 21C and a discharge port receiving portion 22 are provided. In addition, the liquid supply tank storage portion 21 is provided with a housing protruding portion 23 that bulges toward the back surface of the housing 20 in correspondence with a tank back recess 73 (details will be described later) of the liquid supply tank 17. ing.

  The electric fan 15, the sewage tank 14, the liquid feed pump 53, the first connection tube 54, the switching valve 55, the second connection tube 56, the third connection tube 57 and the like are housed in the housing 20. As shown in FIGS. 1 and 8, a power switch 26 is provided on the upper portion of the housing 20. At the lower part of the housing 20, a front wheel and a rear wheel (not shown) for moving the wet type vacuum cleaner 1 are provided.

The liquid feeding tube 52, the first connecting tube 54, the second connecting tube 56, and the third connecting tube 57 are particularly limited in their material, shape, size, etc., as long as they fulfill the required functions. There is no. The switching valve 55 is not particularly limited as long as it has the function, but in the present embodiment, an electromagnetic valve that can be switched by operating a switching switch (not shown) is used.
As the cleaning liquid, an appropriate one containing a detergent is used according to the object to be cleaned. You may use the water which does not contain a detergent.

Next, the configuration of the steam separator 13 will be described in detail.
As shown in FIGS. 1 to 4, the steam / water separator 13 is mounted on the steam / water separator storage portion 24 </ b> A on the front side of the housing 20 in a state where the wastewater tank 14 is stored in the wastewater tank storage portion 24 </ b> B. It is arranged above the sewage tank 14.

The steam separator 13 is mainly composed of a bottomed cylindrical rotating body 13 </ b> B provided above the sewage tank 14. As shown in FIG. 5, the rotating body 13 </ b> B has a cylindrical trapezoidal shape having a circular upper opening 31 and a circular cylindrical bottom 33, which is narrowed downward. Therefore, the area of the cylinder bottom 33 is smaller than the area of the upper opening 31. An upper edge extending portion 36 that extends outward as viewed from above is formed at the peripheral edge of the upper opening 31.
As shown in FIG. 5, a shaft coupling hole 35 for coupling to a rotating shaft 13E (described later) is formed at a position corresponding to the central axis 34 of the rotating body 13B.

  As shown in FIG. 5, the circumferential side portion of the rotating body 13 </ b> B is formed with a large number of blades 32 having a predetermined width standing in the circumferential direction R <b> 3 of the rotating body 13 </ b> B. The blades 32 have a parallelogram shape that is inclined from the upper edge extending portion 36 toward the tube bottom portion 33 in a front view. As shown in FIG. 5B, the blade 32 is inclined by a predetermined angle with respect to a reference line connecting the base in the width direction of the blade 23 and the central axis 34 with respect to the rotation direction R3 of the rotating body 13B. It is preferable that they are erected.

As shown in FIG. 6, a ventilation window 13 </ b> F is provided on the bottom side of the upper part 13 </ b> A of the steam / water separator 13, and a discharge part 13 </ b> C is provided on the back side of the upper part 13 </ b> A of the steam / water separator 13. ing.
A propeller (not shown) is provided inside the upper part 13A of the steam separator 13 as a rotating mechanism for rotating the rotating body 13B. The propeller is rotated by the air current generated in the steam separator 13 by the electric fan 15 (that is, driven by wind power). As shown in FIG. 6, a rotating shaft 13E is connected to the rotating shaft of the propeller. The rotating shaft 13E is connected to the shaft connecting hole 35 of the rotating body 13B. Therefore, when the propeller is rotated by the airflow, the rotating body 13B rotates through the rotating shaft 13E according to the rotation. Thus, the rotating body 13B is rotatable about the rotating shaft 13E as the central axis.

Therefore, in the steam / water separator 13, the rotating body 13 </ b> B is rotated by rotating the rotating body 13 </ b> B with the rotating mechanism in a state where the suction force from the rotating body 13 </ b> B toward the discharge unit 13 </ b> C is exerted by the suction force of the electric fan 15. In the body 13B, most of the dirt and moisture are separated from the mixed flow A in the sewage tank 14, and air C ′ (see FIG. 2) from which the dirt and moisture are substantially separated from the mixed flow A can be discharged from the discharge portion 13C. It has become.
The dirt and moisture (sewage B) separated from the mixed stream A by the steam separator 13 are dropped and stored in the sewage tank 14.

Next, the liquid supply tank 17 will be described in detail.
As shown in FIGS. 8 and 9, the liquid supply tank 17 is detachably attached to the liquid supply tank storage part 21 on the rear side of the housing 20 of the wet type vacuum cleaner 1. As shown in FIG. 10, the liquid supply tank 17 has a tank body 71 that stores the cleaning liquid W. The tank main body 71 can visually recognize the cleaning liquid W in the tank main body 71. In plan view, both left and right side portions bulge from the front to the rear, and a pair of tank rear bulges 72 and the A tank back recess 73 is formed between the two.

  As shown in FIG. 2, a liquid injection port 74 </ b> A for injecting the cleaning liquid W is provided in the upper part of the tank body 71. The liquid injection port 74A is closed by a tank cap 74. As shown in FIG. 10, a tank handle 75 is provided on the front surface of the tank body 71. A tank bottom 76 at the bottom of the tank body 71 is provided with a liquid discharge port 78 for discharging the cleaning liquid W from the inside. As shown in FIG. 2, the liquid discharge port 78 is provided with an on-off valve 78A.

  As shown in FIG. 10, three tank leg portions 77 </ b> A to 77 </ b> C projecting downward from the liquid discharge port 78 are provided on the tank bottom 76 at the lower portion of the tank body 71. The liquid supply tank 17 is detachable from the housing 20 by attaching and detaching the tank bottom 76 and the tank legs 77A to 77C to the liquid supply tank storage part 21.

  The liquid supply tank 17 is preferably provided with a remaining amount warning means that can warn the user of the state when the remaining amount of the cleaning liquid W runs out or falls below a predetermined amount. Examples of the remaining amount warning means include coloration of identification display (lamp etc.) and generation of identification sound.

Next, a switching mechanism between the injection of the cleaning liquid W from the (cleaning liquid) injection nozzle 51 and the injection of the dirty water B from the (sewage) injection nozzle 51 by the switching valve 55 will be described with reference to FIG.
When the liquid feed pump 53 is driven in a state where the first connection tube 54 and the second connection tube 56 are communicated by the switching valve 55, the cleaning liquid W in the liquid supply tank 17 is driven by the driving force of the liquid feed pump 53. The liquid is discharged from the injection nozzle 51 through the liquid discharge port 78, the second connection tube 56, the switching valve 55, the first connection tube 54, the liquid supply pump 53, and the liquid supply tube 52 in this order.

On the other hand, when the liquid feed pump 53 is driven in a state where the first connection tube 54 and the third connection tube 57 are communicated by the switching valve 55, the sewage B in the sewage tank 14 is driven by the driving force of the liquid feed pump 53. The sewage discharge port 14E, the third connection tube 57, the switching valve 55, the first connection tube 54, the liquid supply pump 53, and the liquid supply tube 52 are sequentially injected from the injection nozzle 51.
As described above, the switching valve 55 can switch between the injection of the cleaning liquid W from the (cleaning liquid) injection nozzle 51 and the injection of the sewage B from the (sewage) injection nozzle 51.

As the suction force detection means (not shown), a commonly used means can be appropriately employed. For example, by attaching a commercially available negative pressure gauge to the suction hose 12, the suction force detecting means can be obtained.
The suction force can also be detected by detecting a change in airflow generated by the electric fan 15. This is to detect the rotational speed of the rotating body 13B that is rotated by the air current generated in the steam separator 13 by the electric fan 15, and utilizes the relationship between the rotational speed and the suction force. A mirror surface body such as an aluminum foil or a reflecting mirror is attached to a part of the rotating body 13B or a part of the rotating shaft 13E, and a sensor such as a photoelectric sensor is attached to a part of the periphery of the rotating body 13B or the like. The number of rotations of the rotating body 13B is measured by the number of pulses reflected by the mirror body and received by the sensor again.

The injection amount control means controls the liquid feed pump 53 by inverter control according to the suction force (number of rotations) detected by the suction force detection means. If the number of rotations detected by the suction force detection means is high, the suction nozzle 11 is not in contact with the object to be cleaned, and the amount of the cleaning liquid W (or sewage B) ejected from the liquid feed pump 53 is reduced. To do. If the number of rotations detected by the suction force detection means is low, the suction nozzle 11 is in contact with the object to be cleaned, and the amount of cleaning liquid W (or sewage B) ejected from the liquid feed pump 53 To increase.
The injection amount control between the high rotation range and the low rotation range can be performed by using control of the supply voltage to the liquid feed pump 53 according to the rotation speed of the rotating body 13B, feedback control, synchronous control, etc. in addition to the inverter control. Good.

Next, as a method of using the wet vacuum cleaner 1 of the present embodiment, a case where a residential carpet is washed will be described below. Before use, as shown in FIG. 11, sewage B is not stored in the sewage tank 14, and a sufficient amount of cleaning liquid W is stored in the liquid supply tank 17.
First, the changeover switch is operated to connect the first connection tube 54 and the second connection tube 56 by the changeover valve 55 so that the cleaning liquid W is ejected from the (cleaning liquid) ejection nozzle 51.

  Next, the power switch 26 is operated, the wet vacuum cleaner 1 is turned on, and the liquid feed pump 53 and the electric fan 15 are driven. Thereafter, the suction nozzle 11 is brought into contact with a dirty portion of the carpet (not shown). Then, as shown in FIG. 12, the cleaning liquid W in the liquid supply tank 17 is jetted through the second connection tube 56, the switching valve 55, the first connection tube 54, and the liquid supply tube 52 by driving the liquid supply pump 53. It is sprayed from the nozzle 51 in the form of a mist. As a result, the carpet is cleaned with the sprayed cleaning liquid W, and the dirt is removed.

  In addition, as shown in FIG. 2, the cleaning liquid W including dirt removed from the suction nozzle 11 through the suction hose 12 and the sewage tank 14 is driven by the electric fan 15 so that the hair, cotton dust, and dust adhered to the carpet. The air is sucked toward the steam-water separator 13 together with the dry dust and the air. Hereinafter, these dirt, cleaning liquid, and dry waste are collectively referred to as “dirt and moisture” or “sewage B”, and the dirt, moisture, and air are collectively referred to as “mixed flow A”.

  When the mixed stream A is introduced from the suction nozzle 11 through the suction hose 12 into the sewage tank 14, the water in the mixed stream A aggregates due to a sudden drop in atmospheric pressure, which becomes water droplets in the sewage tank 14. Fall into. In addition, the mixed flow A in the sewage tank 14 tends to pass between the blades 32 of the rotating body 13B in the steam / water separator 13, but is contaminated by the blades 32 of the rotating body 13B rotated by the rotating mechanism. And the moisture (sewage B) is beaten to further separate the air and water. As a result, as shown in FIG. 12, the cleaning liquid W in the liquid supply tank 17 decreases in accordance with the amount of use, and on the other hand, almost the same amount of sewage B (most of the water is the cleaning liquid W). ) Is stored in the sewage tank 14.

  Thereafter, as shown in FIG. 2, the air C ′ from which the sewage B has been substantially separated from the mixed flow A is discharged from the discharge portion 13 </ b> C of the steam separator 13. In the air C ′ discharged from the discharge portion 13 </ b> C, almost no dirt and moisture remain, but the remaining dirt and moisture are almost completely removed when passing through the exhaust filter 16. The air flow C that has passed through the exhaust filter 16 is sucked from the suction portion 15A of the electric fan 15 and discharged from the exhaust portion 15B.

Such cleaning by spraying the cleaning liquid W in the liquid supply tank 17 is performed for a while (for example, 1) until a certain amount (for example, 200 to 500 ml) of sewage B containing the cleaning liquid W is stored in the sewage tank 14. Continue for ~ 3 minutes).
Thereafter, the changeover switch is operated, and as shown in FIG. 13, the first connecting tube 54 and the third connecting tube 57 are communicated by the changeover valve 55, and the sewage B is injected from the (sewage) injection nozzle 51. Put it in a state. Here, it is preferable to leave an appropriate amount (for example, 200 to 500 ml) of the cleaning liquid W in the liquid supply tank 17 in consideration of the cleaning finish after the cleaning by the sewage B injection.

  (Sewage) In the state where the sewage B is jetted from the jet nozzle 51, the sewage B jetted from the jet nozzle 51 is sucked from the suction nozzle 11 and stored again in the sewage tank 14, so that it should be used repeatedly. Can do. The sewage B stored in the sewage tank 14 is mainly composed of the cleaning liquid W even though dirt is mixed therein. Depending on the degree of cleaning, the cleaning power sufficient for actual use remains. There are many cases. Therefore, even if the sewage B is used repeatedly, sufficient cleaning can be performed in actual use.

  After the dirt of the object to be cleaned is sufficiently removed by the repeated use of the sewage B or the cleaning power of the sewage B becomes insufficient, the changeover valve is operated again as shown in FIG. The first connection tube 54 and the second connection tube 56 are communicated by 55 so that the cleaning liquid W is ejected from the (cleaning liquid) ejection nozzle 51. Here, the unused cleaning liquid W remaining in the liquid supply tank 17 is ejected from the ejection nozzle 51, and therefore, the object to be cleaned that has been cleaned by repeated use of the sewage B can be cleaned. it can.

  Thus, according to the wet type vacuum cleaner 1 of the present embodiment, as the spray liquid switching means for switching between the spray of the cleaning liquid W from the (cleaning liquid) spray nozzle 51 and the spray of the dirty water B from the (sewage) spray nozzle 51. Since the switching valve 55 is provided, the liquid supply tank 17 is used to obtain a strong cleaning power or to perform cleaning finishing until a sufficient amount of the sewage B is stored in the sewage tank 14. Cleaning by jetting unused cleaning liquid W can be performed. On the other hand, after a sufficient amount of sewage B has been stored in the sewage tank 14, the sewage B is repeatedly used within the range where the cleaning power of the sewage B remains, and unused in the liquid supply tank 17. Without using the cleaning liquid W, cleaning by jetting the sewage B can be performed for a long time.

Accordingly, since cleaning can be performed with the cleaning liquid W that is not soiled (or less contaminated) at the start of use, and then repeatedly cleaned with the sewage B containing the cleaning liquid W, a sufficiently long use time can be ensured with a small amount of the cleaning liquid W. In addition, cleaning can be performed efficiently from the viewpoint of the amount used. Further, the amount of use of the cleaning liquid W is optimized by the injection amount control based on the suction force detection means and the injection amount control means, and the amount of the cleaning liquid W accommodated can be further reduced. As a result, the wet vacuum cleaner 1 can be downsized.
Moreover, it is possible to finish the cleaning with an unused cleaning liquid W, and according to conditions, it is possible to deodorize or disinfect the object to be cleaned, to finish it softly, or to prevent stickiness.

Since the cleaning liquid is provided with the spray liquid identifying means that can identify which one of the spray of the cleaning liquid W from the (cleaning liquid) spray nozzle 51 and the spray of the sewage B from the (sewage) spray nozzle 51 is performed, the user sprays The liquid can be easily identified and is convenient.
Since it is equipped with a dirt removal mechanism (filters 18A, 18B) that removes dirt in the sewage tank 14, most of the dirt mixed in the sewage B can be removed thereby repeatedly washing with the sewage B with relatively little dirt. It can be performed. Moreover, clogging of the injection nozzle 51 and the like due to dirt can be prevented.

  Depending on the location of dirt on the object to be cleaned, the degree of dirt, the kind of dirt, etc., the spraying of the cleaning liquid W and the spraying of the sewage B can be switched as appropriate, and the spraying time can also be changed accordingly. In particular, it can be effectively used for cleaning against persistent dirt (stains or the like) in a narrow range.

The wet vacuum cleaner of the present invention is not limited to the above-described embodiment, and can be appropriately changed as shown below without departing from the gist of the present invention.
The spray liquid switching means for switching between the spray of the cleaning liquid W from the (cleaning liquid) spray nozzle 51 and the spray of the dirty water B from the (sewage) spray nozzle 51 is not limited to the switching valve 55.
The cleaning liquid spray nozzle and the sewage spray nozzle can be configured as separate bodies (non-shared form). In that case, it is preferable that the cleaning liquid feeding pipe and the sewage liquid feeding pipe are also configured separately.
The sewage tank 14 may have an integral configuration that cannot be separated from the housing 20.

  Moreover, although the electric fan 15 is provided in the inside of the housing 20 as the suction | attraction force generation | occurrence | production means, the wet electric vacuum cleaner 1 of the said embodiment does not use the electric fan 15, but uses an external air suction device in this invention. By using it, the vacuum cleaner can be further reduced in size and weight. That is, as shown in FIG. 15, the electric fan 15 is omitted, and instead, a connection portion 19 with an external air suction device 15 ′ is provided, and similarly to the electric fan 15, a suction portion 15 A ′ that sucks air and By adopting a configuration that can connect an external air suction device 15 ′ having an exhaust portion 15B ′ that exhausts air, a cleaner that is smaller and lighter than conventional ones can be obtained. As a result, it is possible to perform cleaning up to a place where cleaning has been difficult until now.

When a sufficient amount of sewage B or cleaning liquid W is stored in the sewage tank 14, it can be used repeatedly from the start of use.
The wet vacuum cleaner of the present invention is particularly suitable for cleaning objects with fine irregularities such as carpets, sofas and car seats, but for cleaning various parts of the house such as tatami mats, flooring and window glass. Can also be used.

FIG. 1 is a perspective view of an embodiment of the wet type vacuum cleaner of the present invention as viewed from the front upper side. FIG. 2 is a schematic view showing the whole of the wet type vacuum cleaner shown in FIG. 1 together with distribution channels such as dirt and moisture. FIG. 3 is a perspective view of the state in which the steam separator and the liquid supply tank are removed from the wet type vacuum cleaner shown in FIG. 1 as viewed obliquely from above. 4A and 4B are views showing a steam separator in the wet type vacuum cleaner shown in FIG. 1, wherein FIG. 4A is a perspective view and FIG. 4B is a rear view. 5A and 5B are diagrams showing a rotating body, in which FIG. 5A is a perspective view showing a simplified blade, and FIG. 5B is a plan view. 6A and 6B are views showing a state in which the rotating body is removed from the steam-water separator shown in FIG. 4, and FIG. 6A is a perspective view and FIG. 6B is a bottom view. FIG. 7 is a perspective view showing a sewage tank in the wet type vacuum cleaner shown in FIG. 1. FIG. 8 is a perspective view of the wet type vacuum cleaner shown in FIG. 9 is a view showing a state in which the liquid supply tank is removed from the wet type vacuum cleaner shown in FIG. 1, wherein (a) is a perspective view (corresponding to FIG. 8) seen from the front upper side, and (b) is a partial plan view. It is. 10A and 10B are diagrams showing a liquid supply tank in the wet type vacuum cleaner shown in FIG. 1, wherein FIG. 10A is a perspective view and FIG. 10B is a rear view. FIG. 11 is a schematic diagram showing a switching mechanism between the cleaning liquid injection from the cleaning liquid injection nozzle and the sewage injection from the sewage injection nozzle by the switching valve. FIG. 12 is a schematic diagram showing a state next to the state shown in FIG. FIG. 13 is a schematic diagram showing a state next to the state shown in FIG. FIG. 14 is a schematic diagram showing a state next to the state shown in FIG. FIG. 15 is a schematic diagram (corresponding to FIG. 2) showing a wet type vacuum cleaner using an external air suction device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wet vacuum cleaner 11 Suction nozzle 12 Suction hose 13 Air-water separator 13B Rotating body 14 Sewage tank 14A Sewage introduction port 14B Positioning overhanging part 14C Bottom surface 14D Outer peripheral surface 14E Sewage discharge port 15 Electric fan 15 'External air suction device 16 Exhaust Filter 17 Supply tank 18A Upper filter (dirt removal mechanism)
18B Bottom filter (dirt removal mechanism)
19 connection part 20 housing 32 blade | wing 51 injection nozzle (cleaning liquid injection nozzle, sewage injection nozzle)
52 Liquid feeding tube (cleaning liquid feeding pipe, sewage liquid feeding pipe)
53 Liquid feed pump 54 1st connection tube 55 switching valve (injection liquid switching means)
56 2nd connection tube 57 3rd connection tube A Mixed flow B Wastewater C Air C 'Air W which substantially separated the wastewater B from the mixed flow A Cleaning fluid

Claims (8)

A wet type vacuum cleaner that injects cleaning liquid onto an object to be cleaned and sucks dirt on the object to be cleaned together with moisture and air,
A cleaning liquid injection nozzle for injecting a cleaning liquid onto an object to be cleaned, a suction nozzle for sucking moisture and dirt containing the cleaning liquid together with air, a suction hose for conducting a mixed flow of dirt, water and air sucked from the suction nozzle; An air / water separator that separates the mixed stream into dirt and moisture and air, an electric fan that sucks and exhausts air separated from the mixed stream by the air / water separator, and an air / water separator that A sewage tank for storing sewage, which is a mixed water of dirt and water separated from the mixed flow, a sewage injection nozzle for injecting sewage containing cleaning liquid stored in the sewage tank onto an object to be cleaned, and suction from the suction nozzle A suction force detecting means for detecting the suction force of the air, a liquid feed pump for injecting cleaning liquid or sewage, and an injection amount control means for controlling the injection quantity of the cleaning liquid or sewage injected from the liquid pump. Cage,
The wet type vacuum cleaner provided with the injection liquid switching means which switches injection of the cleaning liquid from the said cleaning liquid injection nozzle, and injection of the sewage from the said sewage injection nozzle. A wet type vacuum cleaner that is connected to an external air suction device, sprays cleaning liquid onto the object to be cleaned, and sucks dirt on the object to be cleaned together with moisture and air,
A cleaning liquid injection nozzle for injecting a cleaning liquid onto an object to be cleaned, a suction nozzle for sucking moisture and dirt containing the cleaning liquid together with air, a suction hose for conducting a mixed flow of dirt, water and air sucked from the suction nozzle; An air / water separator that separates the mixed stream into dirt and moisture and air; a connection portion of the external air suction device; and a mixed water of dirt and moisture separated from the mixed stream by the steam / water separator. A sewage tank for storing certain sewage, a sewage injection nozzle for injecting sewage containing cleaning liquid stored in the sewage tank onto an object to be cleaned, and a suction force detecting means for detecting the suction force of air sucked from the suction nozzle And a liquid feed pump for injecting cleaning liquid or sewage, and an injection amount control means for controlling the amount of cleaning liquid or sewage injected from the liquid pump,
A wet type vacuum cleaner cleaner comprising spray liquid switching means for switching between spraying of cleaning liquid from the cleaning liquid spray nozzle and spraying of sewage from the sewage spray nozzle.   The wet type vacuum cleaner according to claim 1 or 2, further comprising: a spray liquid identification unit capable of identifying which one of the cleaning liquid spray from the cleaning liquid spray nozzle and the sewage spray from the sewage spray nozzle is performed. .   The wet-type vacuum cleaner according to any one of claims 1 to 3, further comprising an injection nozzle that serves as both the cleaning liquid injection nozzle and the sewage injection nozzle.   The wet electric vacuum cleaner according to any one of claims 1 to 4, further comprising a dirt removing mechanism that removes dirt from the dirty water in the dirty water tank.   The wet-type vacuum cleaner according to any one of claims 1 to 5, further comprising a liquid supply tank that supplies the cleaning liquid to the cleaning liquid injection nozzle, and the liquid supply tank can visually recognize the cleaning liquid therein.   The wet electric vacuum cleaner according to any one of claims 1 to 6, wherein the sewage tank can be visually recognized.   A cleaning liquid supply pipe for supplying cleaning liquid to the cleaning liquid injection nozzle and a sewage liquid supply pipe for supplying sewage to the sewage injection nozzle are provided, and the cleaning liquid supply pipe can visually recognize the cleaning liquid therein. The wet vacuum cleaner according to any one of claims 1 to 7, wherein the sewage liquid feeding pipe can visually recognize the sewage inside.