CN215838821U - Surface cleaning device and dirt recovery device thereof - Google Patents

Abstract

The utility model discloses a surface cleaning device and a dirt recovery device thereof, wherein the dirt recovery device comprises: the device comprises a box body provided with an inner cavity, wherein an outlet is formed in the upper part of the box body and is used for discharging fluid flowing through the box body; the outlet is located at a front portion of the case in a front-rear direction of the surface cleaning apparatus when the dirt recovery device is mounted to the surface cleaning apparatus. The technical scheme provided by the utility model aims to solve the technical problem that sewage is easy to flow into a fan from an outlet of a box body when the existing sewage recovery device overturns.

Description

Surface cleaning device and dirt recovery device thereof

Technical Field

The utility model relates to the field of electrical equipment, in particular to a surface cleaning device and a dirt recovery device thereof.

Background

The floor washing machine can greatly facilitate the cleaning work of families, and the housework intensity of people is reduced.

The effective volume of the sewage tank of the floor washing machine is defined as the maximum sewage volume in the sewage tank which can not lead sewage to be sucked into the fan, and the ratio of the maximum sewage volume in the static state of the sewage tank to the maximum volume of the sewage tank which can store water is the utilization rate of the effective volume. Because the sewage case volume of scrubber is limited, and the liquid level in the use rocks, all with greatly reduced sewage case's effective volume utilization to lead to the single clean time to shorten, influenced user and used and experienced. Therefore, how to improve the effective volume utilization rate becomes one of the key problems that must be considered in the design of the sewage tank of the floor washing machine.

The current floor scrubber usually adopts a design of gas-liquid separation in a sewage tank. As shown in fig. 1, fig. 1 shows a foul water tank capable of gas-liquid separation, which includes a tank body 1a, a standpipe 2a, a filter medium 4a, a baffle 3a, and a fan 5 a. The case 1a is provided with an inlet 11a and an outlet 12 a. The inlet 11a is provided at the bottom of the case 1a, and the outlet 12a is provided at the top of the case 1 a. The standpipe 2a extends vertically upward from the inlet 11a of the tank 1 a. The baffle 3a extends downward from the middle of the ceiling of the tank 1a, and the outlet 12a of the tank 1a and the upper end port of the inlet pipe are located at both sides of the baffle 3 a.

The filter medium 4a is disposed on the top surface of the case 1a and covers the outlet 12a of the case 1 a. The fan 5a is disposed on the side of the filter medium 4a facing away from the outlet 12a of the case 1 a.

After the fan 5a is started, air in the box body 1a is sucked through the outlet 12a of the box body 1a, the gas-liquid mixture is sucked from the inlet 11a of the box body 1a and vertically moves upwards along the vertical pipe 2a, a dead zone which is not communicated with the outlet 12a of the box body 1a is formed by enclosing the baffle plate 3a, the top wall of the box body 1a and the side wall of the box body 1a, the gas-liquid mixture entering the box body 1a from the top end port of the vertical pipe 2a is diffused in the dead zone, the speed of the gas-liquid mixture is reduced, and gas-liquid separation does not occur in the dead zone.

The gas-liquid mixture bypasses the baffle 3a from the dead zone and enters the outlet 12a of the box body 1a, the gas-liquid mixture needs to turn when bypassing the baffle 3a, and liquid drops in the gas-liquid mixture are thrown off in the turning process, so that the first gas-liquid separation is realized. Because only once gas-liquid separation is carried out, the gas-liquid separation is still incomplete, and a plurality of liquid drops still exist in the gas flow, the liquid drops in the gas flow need to be filtered out for the second time through the filter medium 4a, and the liquid drops are prevented from entering the fan 5a along with the gas flow. Such a waste tank has several disadvantages:

1. the flow channel in the box body is unreasonable in design, so that the gas-liquid separation efficiency is low.

2. Because the filter medium is required to be arranged for secondary filtration, and the filter medium is usually a consumable material such as waterproof cotton or hypa, the filter medium needs to be replaced frequently in the process of using the scrubber, and the use cost is high.

3. When the sewage tank overturns, sewage easily flows into the fan from the outlet of the tank body.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a sewage tank, and aims to solve the technical problem that sewage is easy to flow into a fan from an outlet of a tank body when the existing sewage tank is overturned.

To achieve the above object, the present invention provides a dirt recovery apparatus for a surface cleaning apparatus, comprising:

the device comprises a box body provided with an inner cavity, wherein an outlet is formed in the upper part of the box body and is used for discharging fluid flowing through the box body;

the outlet is located at a front portion of the case in a front-rear direction of the surface cleaning apparatus when the dirt recovery device is mounted to the surface cleaning apparatus.

In an exemplary embodiment, the tank includes a top wall, and the outlet is provided at an edge of the top wall.

In an exemplary embodiment, the box includes a side wall and a top wall disposed at one end of the side wall, and the outlet is disposed at an end of the side wall adjacent to the top wall.

In an exemplary embodiment, the tank is provided with a sewage flow passage, one end of which is communicated with the inner cavity, and the other end of which is used for introducing recycled sewage.

In an exemplary embodiment, the sewage flow channel is provided with one or more corners, and the sewage flow channel is bent at the corners by 180 °.

In an exemplary embodiment, the sewage flow path and the outlet are located on the same side of a lateral center plane of the tank.

In an exemplary embodiment, the dirt recovery device further includes an output flow channel extending from the outlet to a direction close to the bottom wall, an end of the output flow channel facing away from the outlet is closed, and an opening is provided on a pipe wall of the output flow channel.

In an exemplary embodiment, the dirt recovery device further includes a pneumatic impeller disposed in the inner cavity, the pneumatic impeller is disposed outside the opening and covers the opening, and the pneumatic impeller can rotate around its axis.

The utility model also provides a surface cleaning apparatus comprising a dirt recovery device as described above.

In an exemplary embodiment, the surface cleaning apparatus includes a body, the dirt recovery device is disposed at a front side of the body, and the outlet is located at a side of the box body facing away from the body; or

The surface cleaning equipment comprises a machine body, the dirt recovery device is arranged on the rear side of the machine body, and the outlet is located on one side, close to the machine body, of the box body.

When the box is placed vertically, the liquid level of the sewage only needs to not reach the height of the outlet of the box, and the box can contain the sewage of at least a half box because the outlet of the box is positioned at the upper part of the box. When the box body is placed in a backward dumping mode, the liquid level of the sewage is only required to be not higher than the outlet of the box body, and the outlet is located at the front part of the box body, so that the outlet of the box body is located at the position above the box body when the box body is placed in a backward dumping mode, and the sewage of most of box water can be contained. Therefore, even if the box body is inclined backwards, the sewage cannot flow into the negative pressure source from the outlet of the box body, the lying angle of the sewage recovery device is increased, and the effective volume utilization rate of the sewage recovery device is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a prior art dirt recovery device;

FIG. 2 is a schematic cross-sectional view of a soil reclamation apparatus in an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of the dirt recovery device in an in-use condition in accordance with an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of the dirt recovery device in an upright position in an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of the dirt recovery device in a dumped condition in accordance with an embodiment of the present invention;

FIG. 6 is an enlarged partial view of a dirt recovery device in accordance with an embodiment of the present invention;

FIG. 7 is a front view of a wind driven impeller according to an embodiment of the present invention.

The reference numbers illustrate:

1a, a box body; 2a, a vertical pipe; 3a, a baffle plate; 4a, a filter medium; 5a, a fan; 100. a dirt recovery device; 1. a box body; 11. an inlet; 12. an outlet; 13. a top wall; 14. a bottom wall; 15. a side wall; 16. an inner cavity; 2. a sewage flow channel; 21. a first straight flow channel; 22. a second straight flow passage; 23. bending the flow channel; 3. an output flow channel; 31. an opening; 4. a wind driven impeller; 41. a blade; 5. a source of negative pressure; 6. sewage; 7. a mounting seat; 8. a mandrel; 81. a limiting part.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The present embodiment provides a surface cleaning apparatus comprising a body and a dirt recovery device 100. The surface cleaning apparatus may be a floor scrubber and the dirt recovery device 100 may be a sump of the floor scrubber. The dirt recovery device 100 is mounted to the body and is located at one side of the body. The dirt collection device 100 may be installed at the front side of the body, and the dirt collection device 100 may be installed at the rear side of the body.

As shown in FIG. 2, FIG. 2 shows a dirt recovery device 100 of the surface cleaning apparatus of the present embodiment. The sewage recovery apparatus 100 includes a tank 1, a sewage flow passage 2, and a negative pressure source 5. The sewage flow passage 2 is arranged in the box body 1, and the negative pressure source 5 can be arranged at the top of the box body 1.

An inner cavity 16 is arranged in the box body 1, and the inner cavity 16 is used for containing sewage. The interior cavity 16 includes a top wall 13, a bottom wall 14, and side walls 15. The top wall 13 is located above the bottom wall 14. The top wall 13 and the bottom wall 14 may be configured in a planar configuration, with the top wall 13 and the bottom wall 14 being parallel to each other. The side wall 15 is disposed between the top wall 13 and the bottom wall 14. The side wall 15 may be cylindrical, and the top wall 13 and the bottom wall 14 cover both ends of the side wall 15, respectively. The top wall 13, bottom wall 14 and side walls 15 enclose an inner cavity 16. The top wall 13 and the bottom wall 14 may be parallel to the horizontal plane and the side walls 15 may be vertically disposed.

The inner chamber 16 further comprises an inlet 11 and an outlet 12. The inlet 11 is arranged on the edge of the bottom wall 14 and abuts against the side wall 15. The inlet 11 communicates with the outside of the inner chamber 16.

The outlet 12 is used to discharge the fluid flowing through the tank 1. The outlet 12 is provided at an upper portion of the cabinet 1, and the distance from the outlet 12 to the top wall 13 is smaller than the distance from the outlet 12 to the bottom wall 14. The outlet 12 is located at the front of the cabinet 1 in the front-rear direction of the surface cleaning apparatus.

The sewage flow passage 2 is strip-shaped. The cross section of the sewage flow path 2 may be circular, elliptical or rectangular. The sewage flow channel 2 may be arranged in the inner cavity 16. One end of the sewage flow path 2 is connected to the inlet 11 and communicates with the outside of the inner chamber 16 through the inlet 11, and the one end of the sewage flow path 2 is used for introducing the recovered sewage into the tank 1. The other end of the sewage flow passage 2 is communicated with the inner cavity 16.

As shown in fig. 3, the negative pressure source 5 may be a vacuum blower. The negative pressure source 5 is connected to the outlet 12 of the inner cavity 16. The negative pressure source 5, when activated, creates a negative pressure at the outlet 12 of the lumen 16 to draw air within the lumen 16. After the negative pressure source 5 is started, the air pressure at the outlet 12 of the inner cavity 16 is smaller than the air pressure at the inlet 11 of the inner cavity 16, and the dirt in a gas-liquid mixture state enters the sewage flow channel 2 from the inlet 11 and then enters the inner cavity 16 from the sewage flow channel 2.

As shown in FIG. 4, when the tank 1 is placed vertically, the surface of the sewage is not higher than the outlet 12 of the inner cavity 16, and the tank 1 can contain at least half of the sewage in the tank because the outlet 12 is located at the upper part of the tank. As shown in FIG. 5, when the box body 1 is placed in a backward tilting manner, the liquid level of the sewage is not higher than the height of the outlet 12 of the inner cavity 16, and the outlet 12 is positioned at the front part of the box body 1, so that the outlet 12 is positioned at the upper part of the box body 1 when the box body 1 is placed in a tilting manner, and the sewage of half-box water can be contained. Therefore, when the sewage recovery device is overturned backwards, the sewage cannot flow into the negative pressure source 5 from the outlet 12 of the box body 1, the lying angle of the sewage recovery device 100 is increased, and the effective volume utilization rate of the sewage recovery device 100 is high.

In an exemplary embodiment, the outlet 12 is disposed on an edge of the top wall 13 and abuts the side wall 15. The outlet 12 and the inlet 11 may be located on the same side of the inner chamber 16, and the outlet 12 may be located directly above the inlet 11.

As shown in FIG. 4, when the tank 1 is placed vertically, the surface of the sewage is not higher than the outlet 12 of the inner chamber 16, and the tank 1 can be almost filled with the sewage because the outlet 12 of the inner chamber 16 is located on the top wall 13. As shown in fig. 5, when the box body 1 is placed in a backward tilting manner, the liquid level of the sewage does not reach the height of the outlet 12, and since the outlet 12 of the inner cavity 16 is located on the edge of the side wall 15 and at the front part of the box body 1, and the outlet 12 is located at the highest position of the box body 1 when the box body is placed in a backward tilting manner, the inside of the box body 1 can be almost filled with the sewage, and the effective volume utilization rate of the sewage recovery device 100 is further increased.

In an exemplary embodiment, the port of the end of the sewage flow path 2 facing away from the inlet 11 of the inner chamber 16, the inlet 11 of the inner chamber 16 and the outlet 12 of the inner chamber 16 are all disposed on the same side of the central plane of the tank 1.

As shown in fig. 5, when the sewage conduit 2 is inclined, the sewage in the tank 1 does not flow out of the tank 1 through the sewage conduit 2 because the outlet 12 of the inner chamber 16 and the end of the sewage conduit 2 opposite to the inlet 11 of the inner chamber 16 are both located on the same side of the central plane of the tank 1.

In one embodiment, all or part of the sewage flow channel 2 abuts against the side wall 15. The sewage flow channel 2 is provided with one or more corners so that the sewage flow channel 2 meanders in the inner chamber 16. The sewage flow passage 2 is bent at the corner thereof by 180 degrees. One port of the sewage flow path 2 is connected to the inlet 11 of the inner chamber 16, and the other port of the sewage flow path 2 is directed toward the bottom wall 14.

In the present embodiment, the sewage flow path 2 is provided with only one corner. Specifically, the sewage flow path 2 includes a first straight flow path 21, a second straight flow path 22, and a bent flow path 23. The first straight flow passage 21, the bent flow passage 23 and the second straight flow passage 22 are sequentially connected end to end. The first straight flow passage 21 may be a straight pipe section. The first straight flow passage 21 extends from the inlet 11 of the bottom wall 14 in a direction close to the top wall 13. The second straight flow channel 22 is a straight tube section. The second straight flow channel 22 and the first straight flow channel 21 are parallel to each other, and the first straight flow channel 21 and the second straight flow channel 22 are arranged side by side. The length of the second straight flow passage 22 is smaller than the length of the first straight flow passage 21. The ends of the first straight flow passage 21 and the second straight flow passage 22 toward the top wall 13 are flush with each other. Both ends of the bent flow passage 23 are connected to the ends of the first straight flow passage 21 and the second straight flow passage 22 facing the top wall 13, respectively. The bent flow passage 23 connects the first straight flow passage 21 and the second straight flow passage 22 to each other. At the bent flow passage 23, the sewage flow passage 2 forms a corner bent by 180 °. The end of the second straight flow passage 22 facing away from the bent flow passage 23 is ported toward the bottom wall 14.

As shown in fig. 3, after the negative pressure source 5 is activated, the air pressure at the outlet 12 of the inner cavity 16 is lower than the air pressure at the inlet 11 of the inner cavity 16, the dirt in a gas-liquid mixture state enters the sewage flow channel 2 from the inlet 11, and the dirt undergoes preliminary gas-liquid separation when flowing through the sewage flow channel 2. Specifically, when the sewage passes through the corner of the sewage flow channel 2 at a high speed, because the inertia of the liquid drops in the sewage is large, the liquid drops can not turn to the direction and collide with the inner wall of the sewage flow channel 2, the liquid drops flow into the inner cavity 16 from the port of the end, deviating from the inlet 11, of the sewage flow channel 2 along the pipe wall of the sewage flow channel 2, so that preliminary gas-liquid separation is realized, and most of liquid in the sewage is separated from the sewage in the gas-liquid separation process.

Because the end of the sewage flow channel 2, which is far away from the inlet 11, faces the bottom wall 14, the sewage is sprayed out towards the direction of the bottom wall 14 when being output from the sewage flow channel 2, the gas in the sewage turns under the action of the negative pressure of the outlet 12 and moves towards the direction close to the top wall 13, part of liquid drops mixed in the gas do not turn under the action of inertia and gravity and are mutually fused with the liquid level of the sewage 6 in the inner cavity 16, and the liquid drops in the sewage are fused into the sewage 6, so that secondary gas-liquid separation is realized.

Because the outlet 12 of the inner cavity 16 is arranged on the edge of the top wall 13, after the airflow moves to the vicinity of the top wall 13 in the direction close to the top wall 13, the airflow turns to be close to the outlet 12 in the direction parallel to the top wall 13, part of small droplets mixed in the airflow are not turned by inertia in the process of turning the airflow and collide with the top wall 13 to be attached to the top wall 13, and the small droplets on the top wall 13 are converged and then drop into sewage below under the action of gravity, so that the third gas-liquid separation is realized.

The outlet 12 is arranged on the edge of the top wall 13 and is close to the side wall 15, the air outlet direction of the outlet 12 is a direction departing from the bottom wall 14, when the airflow moves to the vicinity of the outlet 12 along the top wall 13, the airflow needs to turn to move to the direction departing from the bottom wall 14, a part of small droplets mixed in the airflow collide with the side wall 15 without turning under the action of inertia, so that the small droplets are attached to the side wall 15, and after being collected on the side wall 15, the small droplets slide down to the sewage under the action of gravity, so that the fourth gas-liquid separation is realized.

Therefore, by adopting the sewage recovery device 100 with the structure, the sewage can be subjected to gas-liquid separation at least four times in the process of moving in the box body 1, the gas-liquid separation effect is good, the efficiency is high, and a filter medium is not required to be arranged.

In an exemplary embodiment, the dirt recovery device 100 further comprises an output flow channel 3. The outlet flow channel 3 extends from the outlet 12 of the inner chamber 16 in a direction close to the bottom wall 14. The outlet flow channel 3 may extend along the side wall 15. The end of the output flow channel 3 facing away from the outlet 12 is closed. The end of the outlet channel 3 facing away from the outlet 12 may be connected to the outer wall of the sewage channel 2 facing the outlet 12. The wall of the output flow channel 3 is provided with an opening 31.

After the arrangement, the speed of the airflow from the opening 31 of the output flow channel 3 to the outlet 12 of the inner cavity 16 is higher, the turning radius is smaller, the turning angle is larger, and the gas-liquid separation effect is more obvious.

In an exemplary embodiment, as shown in fig. 2, 6 and 7, a pneumatic impeller 4 is also provided in the dirt collection device 100. The wind driven impeller 4 is disposed within the internal cavity 16. The wind driven impeller 4 is arranged on the advancing path of the air flow, and the axial direction of the wind driven impeller 4 is parallel to the flow direction of the air flow. In the present embodiment, the wind turbine 4 is disposed outside the opening 31 of the output flow path 3 and blocks the opening 31 of the output flow path 3. The wind-driven impeller 4 can rotate around the axis thereof.

When the air flow passes through the pneumatic impeller 4, the air flow drives the pneumatic impeller 4 to rotate. When the wind rotor 4 rotates, the blades 41 of the wind rotor 4 stir the air flow so that the air flow also rotates. Because the gas flow is in the rotating process, the small liquid drops can be thrown out of the gas flow due to the large inertia of the small liquid drops, and therefore gas-liquid separation is achieved.

In an exemplary embodiment, the dirt recovery device 100 further includes a mounting base 7, a spindle 8, and a connector (not shown). The mounting seat 7 can be sleeve-shaped. The mounting seat 7 is inserted through an opening 31 of the output flow path 3 and is disposed coaxially with the opening 31. The connecting piece can be configured as a straight strip. One end of the connecting piece is connected to the outer peripheral surface of the mounting seat 7, and the other end of the connecting piece is connected to the output flow channel 3. The connecting members may be provided in plurality and radially distributed around the outlet flow passage 3. The mandrel 8 is fixedly connected with the mounting seat 7. The mandrel 8 may be inserted into the interior of the mounting seat 7 and interference fit with the mounting seat 7. The spindle 8 is arranged coaxially with the opening 31. One end of the mandrel 8 departing from the mounting seat 7 is provided with a limiting part 81. The stopper 81 projects radially outward from the spindle 8.

The pneumatic impeller 4 is sleeved on the mandrel 8, and the pneumatic impeller 4 is located between the limiting portion 81 and the mounting base 7. The wind driven impeller 4 is in clearance fit with the mandrel 8. The wind driven impeller 4 is rotatable about the spindle 8. The stopper 81 prevents the wind turbine 4 from coming off the spindle 8.

Alternatively, the wind rotor 4 may be mounted on the shaft 8 by bearings, such as ball bearings or roller bearings, in a rotational connection with the shaft 8.

In an exemplary embodiment, the dirt recovery device 100 is mounted on the front side of the fuselage, and the outlet 12 of the tank 1 is located on the side of the tank 1 facing away from the fuselage.

When the body of the surface cleaning device is laid down backwards, since the dirt recovery device 100 is installed at the front side of the body, and the outlet 12 of the box body 1 is located at the side of the box body 1 departing from the body, the box body 1 is then laid down backwards as shown in fig. 5, the sewage in the box body 1 is difficult to flow out from the outlet 12, and the effective volume utilization rate of the dirt recovery device 100 is large.

In an exemplary embodiment, the dirt recovery device 100 is mounted to the rear side of the body, and the outlet 12 of the tank 1 is located on the side of the tank 1 adjacent to the body.

When the body of the surface cleaning apparatus is laid down backward, since the dirt recovery apparatus 100 is installed at the rear side of the body and the outlet 12 of the case 1 is located at the side of the case 1 close to the body, the case 1 is tilted backward as shown in fig. 5, the sewage in the case 1 is hard to flow out from the outlet 12, and the effective volume utilization rate of the dirt recovery apparatus 100 is large.

It will be appreciated that the outlet 12 may also be provided in a side wall 15, the outlet 12 being spaced from the top wall 13 by a distance less than the outlet 12 is spaced from the bottom wall 14, and the outlet 12 may be provided in an end of the side wall 15 adjacent the top wall 13.

When the box body 1 is vertically placed, the liquid level of the sewage is only required to be not higher than the height of the outlet 12 of the inner cavity 16, and the box body 1 can contain at least half of the sewage of the box body as the distance from the outlet 12 to the top wall 13 is smaller than the distance from the outlet 12 to the bottom wall 14. And because the outlet 12 of the inner cavity 16 is positioned on the side wall 15 of the inner cavity 16, the box body 1 can contain sewage of half box water when being poured. Therefore, when the dirt recovery device 100 is overturned, the sewage cannot flow into the negative pressure source 5 from the outlet 12 of the box 1, the lying angle of the dirt recovery device 100 is increased, and the effective volume utilization rate of the dirt recovery device 100 is high.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A dirt recovery device for a surface cleaning apparatus, comprising:

the device comprises a box body provided with an inner cavity, wherein an outlet is formed in the upper part of the box body and is used for discharging fluid flowing through the box body;

the outlet is located at a front portion of the case in a front-rear direction of the surface cleaning apparatus when the dirt recovery device is mounted to the surface cleaning apparatus.

2. The dirt recovery device of claim 1 wherein the tank includes a top wall, the outlet being provided at an edge of the top wall.

3. The dirt recovery device of claim 1 wherein the tank includes a side wall and a top wall disposed at one end of the side wall, the outlet being disposed at an end of the side wall adjacent the top wall.

4. The soil recovery device according to any one of claims 1 to 3,

the box is provided with the sewage runner, the one end of sewage runner with the inner chamber intercommunication, the other end is used for introducing the filth of retrieving.

5. The dirt recovery device of claim 4 wherein the dirt flow channel is provided with one or more corners, the dirt flow channel being bent 180 ° at said corners.

6. The dirt recovery device of claim 4 wherein the dirt flow passage and the outlet are on the same side of a transverse central plane of the tank.

7. The dirt recovery device of claim 6 further including an output flow path extending from the outlet in a direction adjacent the bottom wall, wherein an end of the output flow path facing away from the outlet is closed, and an opening is provided in a wall of the output flow path.

8. The dirt recovery device of claim 7, further comprising a pneumatic impeller disposed within the internal cavity, the pneumatic impeller disposed outside of and covering the opening, the pneumatic impeller being rotatable about its axis.

9. A surface cleaning apparatus comprising a dirt retrieval device according to any one of claims 1 to 8.

10. A surface cleaning apparatus as claimed in claim 9, characterised in that the surface cleaning apparatus comprises a body, the dirt retrieval device being provided on a front side of the body, the outlet being located on a side of the tank facing away from the body; or

The surface cleaning equipment comprises a machine body, the dirt recovery device is arranged on the rear side of the machine body, and the outlet is located on one side, close to the machine body, of the box body.

Images