JP2005323671A - Wet-type vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wet-type vacuum cleaner suitable for domestic use, in which a compact air/water separator having a specified structure is used for obtaining a sufficient air/water separating effect. <P>SOLUTION: The wet-type vacuum cleaner comprises a suction nozzle 11 for sucking dirt and moisture with air, a suction hose 12 for guiding mixture flow A composed of the dirt, the moisture and the air sucked from the suction nozzle 11, the air/water separator 13 for separating the dirt and the moisture from the mixture flow A, an electric fan 15 having a generating power of 1.5 kW or lower provided for sucking the mixture flow A, and a waste water tank 14 for storing the dirt and the moisture separated from the mixture flow A. The air/water separator 13 comprises an upper plate 35, an lead-in cylinder 31 of the mixture flow A provided on the upper plate 35, a liquid lead-out port 37 communicating with the waste water tank 14, and a plurality of partition walls 32A and 33A provided on the periphery of the lead-in cylinder 31. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wet type vacuum cleaner that sucks dirt on an object to be cleaned together with moisture.

  2. Description of the Related Art Conventionally, a wet type vacuum cleaner that sucks dirt of a cleaning object together with water while spraying water on the cleaning object or after previously spraying water on the cleaning object has been used mainly for business use. .

JP 2001-161762 A Japanese Patent Laid-Open No. 11-19603

  However, in such a wet vacuum cleaner, unlike a dry vacuum cleaner that sucks only dirt, the steam and water separator separates dirt and water (sewage) from a mixed stream consisting of dirt, water and air ( After the so-called air-water separation, it is necessary to suck and exhaust the mixed stream (most of which is air), so a large suction force is required. For this reason, high-power electric fans are used, and the size of the vacuum cleaner is increased.

  In addition, when the mixed flow is sucked with a large suction force, the mixed flow strikes the sewage surface stored in the sewage tank vigorously, and the sewage surface undulates and bubbles are easily generated in the sewage tank. As a result, there is also a problem that the air-water separation efficiency is lowered.

  Accordingly, an object of the present invention is to provide a wet type vacuum cleaner suitable for home use, which can obtain a sufficient effect of separating air and water using a compact air and water separator having a specific structure.

  The present invention relates to a suction nozzle that sucks dirt and moisture together with air, a suction hose that conducts a mixed flow of dirt, moisture, and air sucked from the suction nozzle, and air / water that separates dirt and moisture from the mixed flow A wet electric vacuum cleaner comprising: a separator; an electric fan with an output of 1.5 kW or less for sucking the mixed stream; and a sewage tank for storing dirt and moisture separated from the mixed stream, The separator includes an upper plate, an inlet tube for the mixed flow provided on the upper plate, a liquid outlet port communicating with the sewage tank, and a plurality of partition walls provided around the inlet tube. By providing the above, the above object is achieved.

  According to the wet type vacuum cleaner of the present invention, a sufficient air-water separation effect can be obtained, so that the wet type vacuum cleaner is compact and suitable as a home-use wet vacuum cleaner.

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 type vacuum cleaner 1 of the present embodiment includes a suction nozzle 11 that sucks dirt and water together with air, and a mixed flow of dirt, water, and air sucked from the suction nozzle 11. A suction hose 12 that conducts A, an air-water separator 13 that separates dirt and water from the mixed flow A introduced from the suction hose 12, and an output 1.5 kW that sucks and exhausts air C from the mixed flow A The following electric fan 15 and a sewage tank 14 for storing sewage B separated from the mixed flow A are provided.

As shown in FIGS. 3 to 5, the steam / water separator 13 is provided with an introduction cylinder 31 for introducing the mixed flow A at the center thereof on the upper plate 35 of the steam / water separator 13. A liquid outlet 37 for communicating the steam separator 13 and the sewage tank 14 is provided below the cylinder 31, and a plurality of partition walls 32A and 33A functioning as baffle plates are provided around the introduction cylinder 31 (this embodiment). 2 in the form) are provided.
In addition, as shown in FIGS. 1 to 5, when the electric fan 15 is driven, two mixed flows A are introduced from the introduction cylinder 31 through the suction hose 12 in the steam / water separator 13. While the gas and water separator 13 is exhausted while hitting the partition walls 32A and 33A, dirt and water (sewage B) are separated from the mixed flow A, and the separated dirt and water are stored in the sewage tank 14. It is supposed to be.

The wet type vacuum cleaner 1 of this embodiment is explained in full detail.
The suction nozzle 11 sucks sewage together with air. In the present embodiment, as shown in FIG. 1, the suction nozzle 11 is a hollow body having a divergent shape in a plan view, the tip of which is open, and the object to be cleaned It is a contact surface.

As shown in FIGS. 1 and 2, the suction hose 12 communicates the suction nozzle 11 and the air / water separator 13 and conducts a mixed flow A of sewage and air sucked from the suction nozzle 11. is there.
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 is fitted inside the upper opening of the introduction tube 31 of the steam / water separator 13. Match.
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.

  The air / water separator 13 has a function of separating the sewage B from the mixed flow A introduced from the suction hose 12, and details thereof will be described later.

The electric fan 15 sucks and exhausts air C from the mixed flow A. As shown in FIG. 2, the air C sucked from the suction part 15A is discharged from the exhaust part 15B into the outside air.
The electric fan 15 preferably has an output of 1.5 kW or less in terms of downsizing of the wet vacuum cleaner, but depending on the conditions such as the object to be cleaned, it is 1.2 kW or less, 1.0 kW or less. Can be used.

The sewage tank 14 is a tank for storing sewage B separated from the mixed flow A. In this embodiment, the sewage tank 14 has a cylindrical shape with an upper opening as shown in FIG. Moreover, the sewage tank 14 is arrange | positioned under the steam-water separator 13, as shown in FIGS.
A female screw portion 14A is formed on the upper peripheral edge of the sewage tank 14 (see FIG. 10), and a male screw portion 39C (see FIG. 8, described later) formed on the peripheral edge of the bottom plate 36 of the steam / water separator 13. It can be screwed together. Although not shown, a snap fastener (a so-called snap lock) can be used instead of the screw joint.

Between the discharge part 38 (described later) of the steam separator 13 and the suction part 15A of the electric fan 15, there is provided a filter 16 that adsorbs and separates a small amount of sewage remaining in the mixed flow A from which sewage has been substantially removed. It has been.
The filter 16 may be any filter that can adsorb and separate the sewage from the mixed stream A, and a normal filter made of various sponges or non-woven fabrics can be used.

Below, the structure of the steam-water separator 13 of the wet type vacuum cleaner of this invention is explained in full detail with reference to FIGS.
As shown in FIGS. 3 to 6, the steam separator 13 has a substantially cylindrical shape and is disposed on the upper portion of the sewage tank 14. The steam separator 13 is provided with the introduction tube 31 for introducing the mixed flow A at the center thereof.
The partition walls 32A and 33A are cylindrical partition walls. Two cylindrical partition walls 32A and 33A are provided so as to surround the introduction cylinder 31, and the first chamber 32 and the second chamber are sequentially formed outside the introduction cylinder 31 by the two cylindrical partition walls 32A and 33A. A chamber 33 and a third chamber 34 are formed. An outer peripheral wall 34A is located outside the cylindrical partition wall 33A, and the outer peripheral wall 34A also functions as a baffle plate.
As shown in FIG. 5, the cylindrical wall 31A, the first partition wall 32A, the second partition wall 33A, and the outer peripheral wall 34A are all cylindrical and are arranged substantially concentrically in plan view. In addition, although not shown in figure, it may replace with a substantially concentric shape and may arrange | position in a substantially concentric ellipse shape.

As shown in FIG. 4, the lower end of the cylinder wall 31A is located above the lower end of the first partition wall 32A, and the introduction cylinder 31 and the first chamber 32 communicate with each other below them. The distance L2 between the lower end of the cylindrical wall 31A and the lower end of the first partition wall 32A is preferably 1 to 3 cm.
The upper end of the first partition wall 32A is located below the upper end of the second partition wall 33A, and the first chamber 32 and the second chamber 33 communicate with each other above them. A distance L3 between the upper end of the first partition 32A and the upper end of the second partition 33A is preferably 1 to 2 cm.
The lower end of the second partition wall 33A is located above the lower end of the outer peripheral wall 34A, and the second chamber 33 and the third chamber 34 communicate with each other below them. The distance L4 between the lower end of the second partition 33A and the lower end of the outer peripheral wall 34A is preferably 1 to 3 cm. In addition, the above-described communication state, that is, the introduction cylinder 31 and the first chamber 32 communicate with each other at the lower part thereof, the first chamber and the second chamber communicate with each other at the upper part thereof, and the second chamber and the third chamber further communicate with each other. In the present invention, the state of communicating at the lower part of the "has been communicated in a state of forming a meandering path".

  As shown in FIG. 4, the upper surface of the steam separator 13 is closed by an upper plate 35 except for a portion where the introduction tube 31 penetrates the upper plate 35. On the lower surface of the upper plate 35, the upper end of the second partition wall 33A and the upper end of the outer peripheral wall 34A are joined over the entire circumference thereof, but there may be a portion that is not partly joined.

  As shown in FIG. 4, the bottom surface of the steam separator 13 is substantially closed by the bottom plate 36 except for the liquid outlet 37, and the water accumulated on the bottom plate 36 is stored in the sewage tank 14. An auxiliary lead-out hole 41 leading to is provided. On the upper surface of the bottom plate 36, the lower end of the first partition wall 32A and the lower end of the outer peripheral wall 34A are joined over their entire circumference.

  As shown in FIGS. 3 to 6, a discharge part 38 is provided above the outer peripheral wall 34 </ b> A of the steam separator 13, and the air in the mixed flow A flowing into the third chamber 34 is discharged to the discharge part 38. Discharged from.

In the present embodiment, the lower end of the second partition wall 33A has a step as shown in FIG. 7, and the step surface 33B shown in FIG. 7 is joined to the upper surface of the bottom plate 36 as shown in FIGS. However, the step surface 33C is not joined to the upper surface of the bottom plate 36, and is separated from the upper surface of the bottom plate 36 by L4. As shown in FIG. 7, each of the step surface 33B and the step surface 33C occupies about half (180 °) of the entire circumference of the cylindrical second partition wall 33A. 4 and 5, the discharge portion 38 is provided on the step surface 33B side of the second partition wall 33A on the side joined to the upper surface of the bottom plate 36. Therefore, the second chamber 33 and the third chamber 34 communicate with each other through the vicinity of the lower end of the step surface 33C of the second partition wall 33A, but do not communicate with each other near the lower end of the step surface 33B of the second partition wall 33A. The ratio of the stepped surface 33C to the entire circumference 360 ° of the second partition wall 33A is preferably 90 ° to 270 °, more preferably, on condition that the second chamber 33 and the third chamber 34 communicate with each other. 150 ° to 210 ° (this embodiment). Further, it is preferable that the discharge portion 38 is positioned on the outer peripheral wall 34A corresponding to the midpoint portion of the arc of the step surface 33B in plan view.

A liquid outlet 37 is provided at the center of the bottom plate 36. The liquid outlet 37 is disposed below the introduction cylinder 31 and its diameter gradually decreases gradually toward the inside of the sewage tank 14 as shown in FIG. Note that the diameter of the liquid outlet 37 may be decreased stepwise instead of continuously.
In addition, the bottom plate 36 of the steam separator 13 is provided with an auxiliary outlet hole 41 (see FIGS. 4 and 8) for leading water accumulated thereon to the sewage tank 14. The size, shape, number, etc. of the auxiliary outlet holes 41 are such that the water accumulated on the bottom plate 36 of the steam separator 13 is naturally led to the sewage tank 14 and inhibits the flow of the mixed stream A and the steam separation. It may be set within a range that does not.

Cross-sectional area S0 of the internal space of the introduction tube 31 is preferably 5 to 20 cm ^2, more preferably 5 to 10 cm ^2.
The area ratio (S1 / S0) of the cross-sectional area S1 of the internal space of the first chamber 32 to the cross-sectional area S0 of the internal space of the introduction cylinder 31 is preferably 5-20.
The overlapping length L1 in the vertical direction between the cylindrical wall 31A of the introducing cylinder 31 and the first partition 32A (innermost cylindrical partition) is preferably 2 to 10 cm.

  In this embodiment, the relationship between the inner diameter D2 of the upper part of the liquid outlet 37, the inner diameter D3 of the lower part thereof, and the inner diameter D0 of the introducing cylinder 31 is D2> D0> D3. A part of A hits the inner slope of the liquid outlet 37 and flows into the sewage tank 14 after the flow velocity is weakened, and foaming of the sewage B in the sewage tank 14 is less likely to occur.

  The steam-water separator 13 can be separated into an upper block 13A and a lower block 13B as shown in FIGS. That is, each block is joined by screw fitting between a female screw portion 39A formed on the peripheral edge portion of the upper plate 35 of the steam separator 13 and a male screw portion 39B formed on the upper peripheral edge portion of the outer peripheral wall 34A. And separated by mating release.

  In the upper block 13A, as shown in FIG. 7, the cylindrical wall 31A of the introducing cylinder 31 is joined to the center of the lower surface of the upper plate 35, and the second partition 33A is joined to the outside thereof.

In the lower block 13B, as shown in FIGS. 8 and 9, a first partition wall 32A is joined to the center of the upper surface of the bottom plate 36, an outer peripheral wall 34A is joined to the outside, and a liquid outlet 37 is formed in the center of the bottom plate 36. Is formed.
The lower block 13B and the sewage tank 14 are joined by screwed fitting of a male screw part 39C formed on the peripheral edge of the bottom plate 36 and the female screw part 14A formed on the sewage tank 14, and separated by releasing the fitting. Is done.

In FIG. 4, the upper block 13 </ b> A is indicated by a lower right oblique line, and the lower block 13 </ b> B is indicated by a lower left oblique line.
Further, above the steam / water separator 13, as shown in FIG. 3, a hose switching cylinder 40 is provided so as to extend laterally from the upper part of the introduction cylinder 31. The hose switching cylinder 40 is for connecting a suction hose having an inner diameter different from that of the suction hose 12.

As shown in FIG. 2, an injection nozzle 51 for injecting the cleaning liquid W is provided inside the suction nozzle 11 in the wet vacuum cleaner 1 of the present embodiment, and these nozzles inject the cleaning liquid W. An “injection suction nozzle 10” that sucks dirt and water together with air is configured.
Furthermore, the wet type vacuum cleaner 1 of this embodiment includes a liquid supply tank 55 in which the cleaning liquid W is stored, a liquid supply pump 53 that sends out the cleaning liquid W, and a connection tube that connects the liquid supply pump 53 and the liquid supply tank 55. 54 and a liquid feeding tube 52 that feeds the cleaning liquid W to the ejection nozzle 51 via the connection tube 54 by driving the liquid feeding pump 53.

As shown in FIG. 1, the air / water separator 13, the electric fan 15, the sewage tank 14, the liquid supply tank 55, the liquid feed pump 53, the connection tube 54, and the like are accommodated in the housing 20. The suction hose 12 and the liquid feeding tube 52 are exposed from the upper part of the housing 20, and both are connected in parallel to the suction nozzle 11.
A front wheel 21 and rear wheels 22 and 22 are provided at the lower part of the housing 20, and these wheels facilitate the movement of the wet vacuum cleaner 1.

A liquid feed tube 52 is connected to the spray nozzle 51, and the cleaning liquid W fed from the liquid feed tube 52 is sprayed toward the object to be cleaned from the tip of the spray nozzle 51.
The spray nozzle 51 can be selected from a type that gently sprays the cleaning liquid in a mist state to a type that sprays the cleaning liquid linearly and vigorously according to the object to be cleaned. In this embodiment, what is sprayed in a mist form is used.

The liquid feeding tube 52, the connecting tube 54, the liquid feeding pump 53, and the liquid feeding tank 55 are not particularly limited in material, shape, size, and the like as long as they fulfill their required functions.
As the cleaning liquid, an appropriate one containing a detergent is used according to the object to be cleaned. In some cases, water containing no detergent may be used.

As a method of using the wet electric vacuum cleaner 1 of the present embodiment configured as described above, a case of cleaning a residential carpet will be described below.
When the suction nozzle 11 is brought into contact with a soiled portion of a carpet (not shown), the wet vacuum cleaner 1 is turned on and the liquid feed pump 53 and the electric fan 15 are driven, the cleaning liquid W in the liquid supply tank 55 is discharged. The mist is sprayed from the spray nozzle 51 through the connecting tube 54 and the liquid feeding tube 52. The carpet is cleaned by the sprayed cleaning liquid W, and the dirt is removed.
In addition, when the electric fan 15 is driven, the cleaning liquid W including dirt removed from the suction nozzle 11 through the suction hose 12 is separated into air and water together with dry dust and air such as hair, cotton dust, and dust attached to the carpet. Suction toward the container 13. 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”.

The mixed stream A is introduced from the suction nozzle 11 through the suction hose 12 to the introduction cylinder 31 of the steam separator 13. At this time, moisture in the mixed stream A aggregates due to a sudden drop in atmospheric pressure. It becomes a water droplet and falls into the dirty water tank 14 from the liquid outlet 37. Such a pressure drop slows down the flow rate of the mixed stream A, so that the time during which the mixed stream A stays in the steam / water separator 13 is lengthened, and the separation of dirt and moisture from the mixed stream A is promoted. .
The mixed stream A also flows into the sewage tank 14 and circulates in the sewage tank 14. At this time, the mixed stream A hits the inner wall of the sewage tank 14, sewage, etc. Moisture adheres to the inner surface of the sewage tank 14 or mixes with sewage. As a result, dirt and water are further separated from the mixed stream A. The meandering of the mixed stream A contributes to increasing the time during which the mixed stream A stays in the steam / water separator 13, and has an effect of aggregating fine water droplets from the mixed stream A in particular.

The mixed flow A introduced into the introduction cylinder 31 directly or circulates in the sewage tank 14, and then flows from the lower end of the cylinder wall 31A into the first chamber 32 from below and flows upward from below in the same chamber. Furthermore, it flows into the second chamber 33 from above from the upper end of the first partition wall 32A, and flows downward from above in the same chamber (see the white arrow in FIG. 2).
In such a distribution process, the mixed flow A hits the partition walls 32A, 33A, the upper plate 35, the bottom plate 36, etc., particularly when the flow direction changes, and dirt and moisture contained in the mixed flow A adhere to the partition walls 32A, etc. To do. As a result, dirt and moisture are further separated from the mixed stream A.

By the way, the second chamber 33 and the third chamber 34 communicate with each other in the vicinity of the lower end of the step surface 33C located far from the discharge portion 38, but in the vicinity of the lower end of the step surface 33B located near the discharge portion 38. It is not in communication. Therefore, the mixed flow A flowing into the vicinity of the step surface 33B flows around the step surface 33C and then flows into the third chamber 34 from below. Similarly, dirt and moisture are separated from the mixed stream A in the third chamber.
The water separated in the second chamber and the third chamber is led into the sewage tank 14 from the auxiliary lead hole 41 formed in the bottom plate 36 of the steam separator 13.

Thereafter, the mixed flow A flows through the third chamber 34 from below to above and is discharged from the discharge portion 38.
In the mixed flow A discharged from the discharge unit 38, almost no dirt and moisture remain, but the remaining dirt and moisture are almost completely removed when passing through the filter 16.
The air flow C that has passed through the filter 16 is sucked from the suction portion 15A of the electric fan 15 and discharged from the exhaust portion 15B.

According to the wet type vacuum cleaner 1 of the present embodiment, carpet stains can be removed by sucking the carpet stains together with water while spraying the cleaning liquid onto the carpet.
Moreover, according to the wet type vacuum cleaner 1 of this embodiment, when the mixed stream A is introduced into the introduction cylinder 31, the flow rate of the mixed stream A becomes slow due to a sudden drop in atmospheric pressure, and the moisture in the mixed stream A is reduced. Aggregate and separate from mixed stream A. Further, the mixed stream A circulates in the sewage tank 14 and the dirt and moisture are separated from the mixed stream A. Further, the mixed flow A hits the partition walls 32A, 33A, the outer peripheral wall 34A, etc., and the dirt and moisture are separated from the mixed flow A. The filter 16 also removes dirt and moisture from the mixed stream A.
Thus, in the wet type vacuum cleaner 1 of this embodiment, the flow path of the mixed flow A in the steam separator 13 is made into a complicated state with a meandering flow, and the mixed stream A is separated from the steam for as long as possible. Since it is designed to stay in the vessel 13, dirt and water are efficiently separated from the mixed stream A.
Therefore, according to the present invention, by using the steam / water separator having the specific structure described above, a sufficient steam / water separation effect can be obtained, and the capacity of the steam / water separator can be reduced. A wet vacuum cleaner is provided.

Further, since the sewage tank 14 is disposed under the steam / water separator 13, the mixed stream A easily flows into the sewage tank 14, and the mixed stream A circulates in the sewage tank 14. Water separation effect is also obtained.
Since the diameter of the liquid outlet 37 that connects the steam separator 13 and the sewage tank 14 gradually decreases toward the inside of the sewage tank 14, the occurrence of foaming of the sewage B stored in the sewage tank 14 is reduced. can do. Further, it is possible to suppress the bubbles generated in the sewage tank 14 from flowing back into the steam / water separator 13.
According to the wet type vacuum cleaner 1 of this embodiment, since the injection nozzle 51 is provided in the suction nozzle 11, dirt and moisture can be sucked while spraying the cleaning liquid, and the cleaning work is easy.

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 shape of the partition walls in the steam / water separator is not limited to a cylindrical shape as long as it has a baffle plate function, and the number thereof is not limited to two in the above embodiment, and may be one or three or more. . If the number of partition walls increases, the flow path of the mixed flow becomes more complicated, and the residence time of the mixed flow in the steam / water separator becomes longer, which further improves the steam / water separation effect, thereby inhibiting compactness. You may increase the number of partition walls in the range which does not.
The introduction cylinder, the partition wall, and the outer peripheral wall are not limited to the cylindrical shape of the above embodiment, and may be other shapes such as a square cylinder.
The sewage tank 14 is preferably installed under and in contact with the steam / water separator 13, but may be installed so as not to contact the steam / water separator 13. The upper or lower communication portion between adjacent partition walls may not be formed over the entire circumference of the partition wall. For example, a configuration in which communication portions and non-communication portions are alternately arranged in the circumferential direction of the partition wall. It is good.

The suction nozzle can be used by replacing it with one having an appropriate shape according to the object to be cleaned.
The wet vacuum cleaner of the present invention is particularly suitable for cleaning objects with fine irregularities such as carpets and car seats, but also for cleaning various parts of a house such as tatami mats, flooring, and window glass. Can be used.

It is also possible to arrange the spray nozzle outside the suction nozzle so that the cleaning liquid is sprayed from the outside of the suction nozzle. Also. The cleaning liquid spraying function may not be provided. In that case, after the cleaning liquid is sprayed on the object to be cleaned, the dirt on the object to be cleaned may be sucked together with moisture.
The liquid feeding tube may be provided integrally with the suction hose on the outer peripheral surface of the suction hose, or may be disposed inside the suction hose.

FIG. 1 is a perspective view showing a wet type vacuum cleaner according to an embodiment of the present invention, with its housing virtually seen through. 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 showing an air / water separator and a sewage tank in the wet type vacuum cleaner of one embodiment of the present invention. FIG. 4 is a schematic cross-sectional view showing an air / water separator and a sewage tank in the wet type vacuum cleaner of one embodiment of the present invention. 5A to 5D are an AA sectional view, a BB sectional view, a CC sectional view, and a DD sectional view, respectively, shown in FIG. FIG. 6 is a perspective view showing a steam separator in the wet type vacuum cleaner of one embodiment of the present invention. FIG. 7 is a perspective view of the upper block obtained by disassembling the steam-water separator shown in FIG. 6 as viewed obliquely from below. FIG. 8 is a perspective view of the lower block obtained by disassembling the steam-water separator shown in FIG. 6 as viewed obliquely from above. FIG. 9 is a perspective view of the lower block obtained by disassembling the steam-water separator shown in FIG. 6 as viewed obliquely from below. FIG. 10 is a perspective view showing a sewage tank in the wet type vacuum cleaner of one embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wet electric vacuum cleaner 10 Injection suction nozzle 11 Suction nozzle 12 Suction hose 13 Air-water separator 14 Sewage tank 15 Electric fan 16 Filter 20 Housing 21 Front wheel 22 Rear wheel 31 Introduction cylinder 31A Cylinder wall 32 1st chamber 32A 1st partition ( Innermost cylindrical partition)
33 Second chamber 33A Second partition 34 Third chamber 34A Peripheral wall 35 Top plate 36 Bottom plate 37 Liquid outlet 38 Discharge portion 41 Auxiliary outlet 51 Injection nozzle 52 Liquid supply tube 53 Liquid supply pump 54 Connection tube 55 Liquid supply tank A Mixed flow B Wastewater C Air W Cleaning liquid

Claims (6)

A suction nozzle that sucks dirt and moisture together with air; a suction hose that conducts a mixed flow of dirt, moisture and air sucked from the suction nozzle; and a steam / water separator that separates dirt and moisture from the mixed flow; A wet type electric vacuum cleaner comprising an electric fan with an output of 1.5 kW or less for sucking the mixed flow, and a sewage tank for storing dirt and water separated from the mixed flow,
The steam separator includes a top plate, a mixed flow introduction tube provided on the top plate, a liquid outlet opening communicating with the sewage tank, and a plurality of partition walls provided around the introduction tube. Electric vacuum cleaner. The partition wall is a cylindrical partition wall, and at least two cylindrical partition walls are provided so as to surround the introduction cylinder, and at least first of the cylindrical partition walls is sequentially provided to the outside of the introduction cylinder by at least two of the cylindrical partition walls. A chamber, a second chamber and a third chamber are formed,
2. The wet type vacuum cleaner according to claim 1, wherein the mixed flow communicates with the introduction tube from the first chamber to the third chamber in a state of forming a meandering path.   2. The sewage tank is disposed below the steam separator, and the liquid outlet port is disposed below the introduction tube, the diameter of the liquid outlet being reduced toward the inside of the sewage tank. Or the wet vacuum cleaner of 2.   The wet vacuum cleaner according to any one of claims 1 to 3, wherein an auxiliary lead-out hole for leading water accumulated on the bottom plate of the steam / water separator to the sewage tank is provided. The cross-sectional area S0 of the internal space of the introduction tube is 5 to ²⁰ cm ² ,
The area ratio (S1 / S0) of the cross-sectional area S1 of the internal space of the first chamber to the cross-sectional area S0 of the internal space of the introduction cylinder is 5 to 20,
The wet vacuum cleaner according to any one of claims 2 to 4, wherein an overlapping length L1 in the vertical direction between the cylindrical wall of the introduction cylinder and the innermost cylindrical partition wall is 2 to 10 cm. The said introduction cylinder is cylindrical shape, The relationship between the internal diameter D2 of the upper part of the said liquid outlet, the internal diameter D3 of the lower part, and the internal diameter D0 of this introduction cylinder is D2>D0> D3. A wet vacuum cleaner as described in 1.

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