CN222640431U - Cleaning machine - Google Patents

Abstract

The utility model relates to a cleaning machine, comprising: a box body with a washing chamber, a mounting opening intersecting the washing chamber is provided on the side wall of the box body; an overflow seat, which is installed on the outer side wall of the box body and covers the mounting opening on the side wall of the box body, an overflow chamber with an open opening and an overflow flow channel are defined in the overflow seat, the open opening of the overflow chamber is opposite to the mounting opening on the side wall of the box body, the overflow flow channel has an overflow port connected to the overflow chamber for the water flow in the washing chamber to be discharged, and also includes a drain pipe connected to the outlet position of the overflow flow channel, and the drain pipe is provided with an outlet for gas to be discharged outward. If the sewer pipe is blocked or the valve on the pipe fails to open, the water or odor in the drain pipe that cannot be discharged in time will emerge from the outlet, and will not flow back into the inner cavity of the cleaning machine, thereby ensuring the cleanliness of the inner cavity of the cleaning machine. In addition, it is easier for users to timely identify whether the drainage pipe is blocked and to inspect or dredge the pipe.

Description

Cleaning machine

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to a cleaning machine.

Background

With the increasing level of living of people, kitchen washers, such as dish washers, are increasingly entering the home as a kitchen household appliance. The existing cleaning machines in the market are generally divided into a table type, a cabinet type and a trough type, wherein the table type dish washing machine is of an integral independent structure and is generally placed on a table top for use, the cabinet type dish washing machine is of an independent structure and is needed to be embedded into a kitchen cabinet for use, and the trough type dish washing machine is combined with a trough and is generally installed in the kitchen cabinet for use.

The dish washing machine in various forms generally lifts water by the water pump and sprays the water to dishes in the washing space so as to achieve the washing effect, and the box body of the washing cavity is provided with the overflow seat which can be connected with an external water inlet pipe, so that overflow water is conveniently discharged. The Chinese patent application with the application number of CN202022220774.9 (the authorized bulletin number is CN 214760956U) discloses a cleaning machine, which comprises a box body with a cleaning cavity, wherein a water inlet is formed in the side wall of the box body, a water inlet pipeline connected with the water inlet is arranged at the outer side of the box body, and an ultrasonic generator capable of generating bubbles in water is arranged in the water inlet pipeline. The water inlet is positioned in the middle or upper part of the side wall of the box body and forms an overflow port, the outer side wall of the box body is provided with an overflow seat connected with the overflow port, and the overflow seat is provided with a first opening communicated with the output end of the water inlet pipeline and a second opening for overflow discharge. The side wall of the overflow seat is provided with openings which are arranged corresponding to the overflow openings, the inside of the overflow seat is hollow to form an overflow cavity, and the first opening is arranged on the bottom wall of the overflow seat, communicated with the water inlet and relatively isolated from the overflow cavity.

However, the existing cleaning machine has a certain defect, the second opening for overflow discharge on the overflow seat is connected with the conventional drain pipe and the sewer pipe, in order to prevent the sewer pipe from blocking the waste water and flowing back to the cleaning machine through the overflow port, a one-way valve is usually arranged on the path of the drain pipe, but sometimes the condition that the one-way valve fails exists, so that the cleaning machine can not normally drain water, water flow or odor easily flows back into the inner cavity of the cleaning machine, the air quality of the inside and surrounding environment of the cleaning machine is reduced, discomfort is brought to a user, and especially, bacteria, viruses and other harmful substances possibly contained in the odor pollute the inside of the cleaning machine again, and the cleaning effect is influenced.

Therefore, further improvements are needed in the existing cleaning machines.

Disclosure of utility model

The utility model aims to solve the technical problem of providing a cleaning machine capable of effectively preventing odor generated by drain pipe blockage from flowing back into an inner cavity of the cleaning machine.

The utility model solves the technical problems by adopting the technical scheme that the cleaning machine comprises:

The washing device comprises a box body with a washing chamber, wherein a mounting opening communicated with the washing chamber is formed in the side wall of the box body;

The overflow seat is arranged on the outer side wall of the box body and covers the mounting opening on the side wall of the box body, an overflow chamber with an opening and an overflow runner are defined in the overflow seat, the opening of the overflow chamber is opposite to the mounting opening on the side wall of the box body, the overflow runner is provided with an overflow opening which is communicated with the overflow chamber and is used for discharging water flow in the washing chamber, the overflow seat further comprises a water outlet position drain pipe connected with the overflow runner, and an air outlet for discharging air outwards is formed in the drain pipe.

As a preferable scheme, the whole drain pipe extends vertically, an exhaust branch pipe extending upwards in an inclined way is further connected to the main body of the drain pipe, and the top port of the exhaust branch pipe is the air outlet.

As another preferred scheme, the drain pipe comprises an upper pipe and a lower pipe which are sequentially arranged from top to bottom, the upper end part of the lower pipe is of a taper pipe structure with the caliber gradually increased from bottom to top, the lower port of the lower pipe is connected with the outer peripheral edge of the taper pipe structure through a connecting rib, and the upper port of the taper pipe structure is the air outlet.

As a further preferable scheme, the drain pipe comprises a first pipe and a second pipe which are vertically arranged and are arranged in a staggered mode in the up-down direction, wherein the bottom of the first pipe is connected with the second pipe through a horizontal pipe which horizontally extends, and the top port of the second pipe is higher than the horizontal pipe, so that the air outlet is formed.

As a further preferable scheme, the drain pipe comprises a first pipe and a second pipe which are vertically arranged and are arranged in a staggered manner in the up-down direction, the bottom of the first pipe is connected with the upper part of the second pipe through a first inclined pipe extending obliquely upwards, the bottom of the first pipe is also connected with the lower part of the second pipe through a second inclined pipe extending obliquely downwards, and the top port of the second pipe is higher than the first inclined pipe, so that the air outlet is formed.

In order to be connected with other drainage pipelines (such as a sewer pipe of a conventional water tank) conveniently, the drainage pipe is also provided with a connecting branch pipe.

In order to facilitate the overflowed water flow to smoothly flow down, the main body of the overflow seat is also provided with an overflow pipe, the overflow pipe is shaped into an inverted L-shaped structure, the end part of the transverse part of the L-shaped overflow pipe is connected with the overflow port, and the inner cavity of the overflow pipe forms the overflow flow channel.

As an improvement, the drain pipe is connected with the lower end of the vertical part of the L-shaped overflow pipe.

As an improvement, the overflow port is positioned higher than the bottom wall of the overflow chamber. When the cleaning machine works normally, water sprayed by the spray arm can be sputtered into an overflow cavity of the overflow seat, so that the water is prevented from missing from the overflow port, the cleaning degree is affected, and the design of lifting the overflow surface of the overflow port (namely, the plane where the lowest position of the overflow port is located) is adopted.

In order to avoid sewage backflow, the drain pipe is also provided with a one-way valve for water flow to pass through in one way.

Compared with the prior art, the utility model has the advantages that after the water draining pipe is connected at the outlet position of the overflow flow channel and the air outlet for discharging air outwards is arranged on the water draining pipe, if the water draining pipeline is blocked or the valve on the pipeline is opened and fails, the water or odor which is discharged downwards in the water draining pipe can not emerge from the air outlet at the moment and can not flow back into the inner cavity of the cleaning machine, so that the cleanliness of the inner cavity of the cleaning machine is ensured, and in addition, a user can more easily and timely identify whether the water draining pipeline is blocked or not, and the pipeline is overhauled or dredged.

Drawings

Fig. 1 is a schematic perspective view of a cleaning machine according to embodiment 1 of the present utility model;

FIG. 2 is a schematic view of a perspective view of a cleaning machine according to another embodiment of the present utility model;

fig. 3 is a schematic perspective view of a cleaning machine according to embodiment 1 of the present utility model (the overflow seat mounting structure is in an exploded state);

FIG. 4 is a vertical sectional view of the overflow seat of the washing machine of embodiment 1 of the present utility model;

fig. 5 is a schematic perspective view of an overflow seat mounting structure according to embodiment 1 of the present utility model;

FIG. 6 is an exploded view of the overflow seat mounting structure of embodiment 1 of the present utility model;

fig. 7 is a schematic perspective view of an overflow seat according to embodiment 1 of the present utility model;

Fig. 8 is a schematic perspective view of an overflow seat mounting structure according to embodiment 2 of the present utility model;

fig. 9 is a schematic perspective view of an overflow seat mounting structure according to embodiment 3 of the present utility model;

Fig. 10 is a schematic perspective view of an overflow seat mounting structure according to embodiment 4 of the present utility model;

fig. 11 is a sectional view of an overflow seat mounting structure of embodiment 4 of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Example 1

Figures 1-7 illustrate a preferred embodiment of the washer of the present utility model. A cleaning machine includes a cabinet 10 having a washing chamber 100, a shower arm rotatably provided in the washing chamber 100, and an overflow seat 20 provided on an outer sidewall of the cabinet 10. The bottom of the box body 10 is also provided with a water pumping mechanism for pumping water at the bottom of the box body 10 into the spray arm. The pumping mechanism and spray arm are the same as those of the prior application 201320889945.4 of the present inventor and will not be described in detail herein.

Referring to fig. 3, a mounting port 11 penetrating the washing chamber 100 is formed in a sidewall of the cabinet 10. The overflow seat 20 is installed on the outer sidewall of the casing 10 and covers the installation opening 11 on the sidewall of the casing 10. The overflow seat 20 defines therein an overflow chamber 200 having an opening, a water inlet flow passage 210, and an overflow flow passage 220.

The inner side wall of the case 10 is provided with a mounting plate 30 covering the mounting opening 11. The mounting plate 30 may be coupled to the overflow seat 20 such that the overflow seat 20 is lockingly coupled to the sidewall of the tank 10. Specifically, the overall size of the mounting plate 30 is slightly larger than the mounting port 11, wherein the outer peripheral edge of the mounting plate 30 may be limited inside the outer peripheral edge of the mounting port 11 of the case 10. The overflow chamber 200 has a rear wall opposite to an opening thereof, left and right opposite side walls, and top and bottom walls opposite to each other up and down. The rear wall of the overflow chamber 200 has support columns 23 extending forward, and the support columns 23 have two spaced apart left and right. The mounting plate 30 is partially deformed outwards and protrudes through the mounting opening 11 to be propped against the end parts of the two support columns 23 of the overflow seat 20, the position of the mounting plate 30 opposite to the two support columns 23 is provided with a connecting hole 300, and a screw passes through the connecting hole 300 to be connected with the end parts of the support columns 23. After the screws are locked in place, the outer peripheral edge of the mounting plate 30 abuts against the inner side of the outer peripheral edge of the mounting port 11 of the casing 10, and the main body of the overflow seat 20 abuts against the inner side of the outer peripheral edge of the mounting port 11 of the casing 10. After the overflow seat 20 is installed in place, the opening of the overflow chamber 200 is opposite to the mounting opening 11 on the side wall of the box body 10, and a sealing ring 24 in sealing contact with the opening of the overflow seat 20 and the outer peripheral edge of the mounting opening 11 on the side wall of the box body 10 is further arranged between the periphery of the opening of the overflow seat 20 and the outer peripheral edge of the mounting opening 11 on the side wall of the box body 10, and the sealing ring 24 can prevent water flow from leaking or seeping from a gap between the overflow seat 20 and the side wall of the box body 10, so that the sealing effect is ensured. In order to avoid the influence of the installation plate 30 on the overflow process, an opening 31 opposite to the opening of the overflow chamber 200 is opened at the middle of the installation plate 30, and the water flow in the washing chamber 100 may enter the overflow chamber 200 of the overflow seat 20 through the opening 31 of the installation plate 30.

The main body of the overflow seat 20 is also provided with a vertically extending water inlet pipe 21 and an overflow pipe 22 with an inverted L-shaped structure. The water inlet pipe 21 and the overflow pipe 22 are integrally designed with the main body of the overflow seat 20. The inlet pipe 21 may be used to connect with an external water supply pipe. The overflow pipe 22 may be used to connect with an external waste water discharge line. More specifically, in order to further reasonably utilize the space in the overflow chamber of the overflow seat 20, the overall volume of the overflow seat 20 is smaller and more compact, the overall body of the overflow seat 20 is in a flat structure, and the L-shaped overflow pipe 22 is located at the right side of the main body of the overflow seat 20. The end of the lateral part of the L-shaped overflow pipe 22 penetrates to the right side wall of the overflow chamber, that is, the right side wall of the overflow chamber is provided with an overflow port 221 for water to enter the overflow pipe 22. In normal operation of the cleaning machine, water sprayed from the spray arm may be sputtered into the overflow chamber of the overflow seat 20, so as to prevent the water from flowing away from the overflow gap 221 and thus affect the cleaning degree, so the overflow seat 20 of the embodiment adopts a design of raising the overflow surface of the overflow gap 221 (i.e. the plane where the lowest position of the overflow gap 221 is located), specifically, as shown in fig. 4, the position of the overflow gap 221 is higher than the bottom wall of the overflow chamber 200, and the distance between the lowest position of the overflow gap 221 and the bottom wall of the overflow chamber is denoted as the second distance.

A downwardly-arched shroud 212 is provided on the top wall of the overflow chamber 200. The shroud 212 extends in the front-rear direction with the front end portion extending forward to the position of the mounting opening 11 of the cabinet 10, and forms a water inlet 211 communicating with the washing chamber 100 in an area defined by the outer peripheral edge of the mounting opening 11. The water inlet pipe 21 extends vertically, specifically, extends into the overflow chamber 200 from the bottom of the overflow seat 20, the top of the water inlet pipe 21 is connected with the enclosing plate 212, and the enclosing plate 212 is correspondingly provided with a water passing port 2120 at the position connected with the upper port of the water inlet pipe 21, so that the inner cavity of the water inlet pipe 21 and a section enclosed between the enclosing plate 212 and the top wall of the overflow chamber 200 together form a water inlet flow passage 210 of the overflow seat 20. The overflow pipe 22 is biased at the side part of the main body of the overflow seat 20 and the water inlet pipe 21 vertically penetrates into the overflow cavity, so that the situation that the overflow seat 20 excessively protrudes outwards relative to the side wall of the box body 10 to occupy the installation space can be effectively avoided, and the whole overflow seat 20 is smaller and more compact.

As can be seen from fig. 7, the water inlet 211 of the water inlet flow path 210 is located higher than the water overflow 221 of the water overflow flow path 220. Considering the water quantity and overflow quantity in the washing chamber 100, the space between the water inlet 211 of the water inlet channel 210 and the overflow hole 221 of the overflow channel 220 needs to be reasonably designed, so that the water overflowed in the washing chamber and the water inlet source are not polluted, the vertical distance between the lowest position of the water inlet 211 of the water inlet channel 210 and the lowest position of the overflow hole 221 of the overflow channel 220 is recorded as a first space L1, and the value of the first space L1 ranges from 2.5cm to 5.5cm. The water inlet 211 of the water inlet channel 210 is higher than the water outlet 221 of the water outlet channel 220, so that the purpose of cutting off the communication state between the washing chamber 100 of the washing machine and the water inlet channel 210 can be achieved, the contact pollution of overflowed water in the washing chamber and the water inlet source is effectively avoided, and the cleaning of the washing chamber 100 is ensured.

In order to prevent the water flow of the washing chamber 100 from splashing into the overflow chamber 200 during the normal operation of the washing machine, a blocking cover 40 is further connected to the mounting plate 30, and the blocking cover 40 is blocked at the open front side of the overflow chamber 200. The blocking cover 40 is square, and four corner positions of the blocking cover are provided with outward extending inserting sheets 41. Each insert 41 is provided with a limiting blocking part 411 and a limiting protrusion 412 which are sequentially arranged along the length direction of the insert 41, the limiting blocking part 411 is relatively close to the main body of the blocking cover 40, and the limiting protrusion 412 is relatively far away from the main body of the blocking cover 40. The mounting plate 30 is correspondingly provided with a slot 32 for inserting the inserting piece 41 therein, and the slot 32 is a strip-shaped slot matched with the inserting piece 41. The limiting projection 412 on the insert 41 is an arc projection protruding outwards relative to the wall surface of the insert 41. The arc-shaped protrusion can extend into the overflow chamber 200 of the overflow seat 20 through the slot 32 of the mounting plate 30. In the state that the blocking cover 40 is assembled on the mounting plate 30 in place, the blocking cover 40 covers the front side of the opening 31 of the mounting plate 30, the limiting protrusion 412 on the inserting sheet 41 is limited on one side of the outer peripheral edge of the inserting slot 32 on the mounting plate 30 facing the overflow chamber 200, and the limiting blocking part 411 of the inserting sheet 41 is correspondingly limited on one side of the outer peripheral edge of the inserting slot 32 on the mounting plate 30 facing away from the overflow chamber 200. The limiting stop 411 of the insert 41 is spaced from the main body of the stop cover 40, so that the peripheral edge of the stop cover 40 and the main body of the mounting plate 30 are reserved for the water flow in the washing chamber 100 to enter the water passing gap 50 in the overflow chamber 200. By arranging the baffle cover at the side wall mounting opening of the box body, food residues in the operation process of the cleaning machine are not easy to enter the overflow cavity to block the overflow opening, so that the risk of food residues remained at the overflow opening of the cleaning machine is effectively reduced, and the normal operation of the cleaning machine and the sanitation and safety of tableware cleaning are ensured. On the other hand, the arrangement of the baffle cover is coordinated with the overall appearance of the inner wall of the box body of the cleaning machine, and the exposed opening can be covered, so that the appearance of the cleaning machine is tidier and more uniform, the visual aesthetic feeling of the cleaning machine is enhanced, and the overall product texture is also improved.

The lower end of the vertical portion of the L-shaped overflow pipe 22 of the overflow seat is connected with a drain pipe 60, and a check valve (not shown) is further provided on the drain pipe 60 to prevent the overflowed water from flowing back. The drain pipe 60 may be connected to an external drain line. The drain pipe 60 of this embodiment extends vertically as a whole, and an exhaust branch pipe 604 extending obliquely upwards is further connected to the main body of the drain pipe 60, and the top port of the exhaust branch pipe is an air outlet 60a for exhausting air. If the sewer pipe is blocked or the valve on the sewer pipe is opened and fails, the water or odor discharged from the sewer pipe 60 can not flow out from the air outlet 60a at the moment and can not flow back into the inner cavity of the cleaning machine, so that the cleanliness of the inner cavity of the cleaning machine is ensured, and in addition, a user can easily and timely identify whether the sewer pipe 60 is blocked or not, and the sewer pipe is overhauled or dredged. In order to connect with other drain pipes 60 (such as the drain pipe of a conventional sink), the drain pipe 60 of this embodiment is further provided with a connecting branch pipe 66, and the connecting branch pipe 66 also extends obliquely upward.

Example 2

Fig. 8 shows another preferred embodiment of the cleaning machine of the present utility model. The difference between this embodiment and embodiment 1 is that the structure of the drain pipe 60 connected to the overflow pipe 22 is different, specifically, the drain pipe 60 of this embodiment includes an upper pipe 601 and a lower pipe 602 sequentially arranged from top to bottom, the upper end of the lower pipe 602 is in a taper pipe structure with a gradually larger caliber from bottom to top, the caliber of the pipe orifice of the upper pipe 601 is smaller than that of the top opening 31 of the taper pipe structure, and the lower port of the lower pipe 602 is connected to the outer peripheral edge of the taper pipe structure through a connecting rib 603, so that the upper port of the taper pipe structure is the air outlet 60a for the odor to be discharged upwards and outwards.

Example 3

Fig. 9 shows another preferred embodiment of the cleaning machine of the present utility model. The difference between this embodiment and embodiment 1 is that the structure of the drain pipe 60 connected to the overflow pipe 22 is different, specifically, the drain pipe 60 includes a first pipe 61 and a second pipe 62 which are all vertically arranged and are arranged in a staggered manner in the up-down direction, and the bottom of the first pipe 61 is connected to the second pipe 62 by a horizontal pipe 63 extending horizontally, where the horizontal pipe 63 may extend horizontally or may be inclined slightly downward with respect to the horizontal plane. The top port of the second pipe 62 is higher than the horizontal pipe 63, i.e. the position where the horizontal pipe 63 is connected with the second pipe 62 is lower than the top port of the second pipe 62, and the top port of the second pipe 62 is the air outlet 60a for discharging odor.

Example 3

Fig. 10 and 11 show another preferred embodiment of the cleaning machine of the present utility model. The difference between this embodiment and embodiment 1 is that the structure of the drain pipe 60 connected to the overflow pipe 22 is different, specifically, the drain pipe 60 includes a first pipe 61 and a second pipe 62 which are all vertically disposed and are staggered in the up-down direction, wherein the bottom of the first pipe 61 is communicated with the upper portion of the second pipe 62 through a first inclined pipe 64 extending obliquely upward, the bottom of the first pipe 61 is also connected with the lower portion of the second pipe 62 through a second inclined pipe 65 extending obliquely downward, the top port of the second pipe 62 is higher than the first inclined pipe 64, that is, the position where the second inclined pipe 65 is connected with the second pipe 62 is lower than the top port of the second pipe 62, and the top port of the second pipe 62 is the air outlet 60a for discharging odor.

Claims (10)

1. A cleaning machine, comprising:

A box body (10) provided with a washing chamber (100), wherein the side wall of the box body (10) is provided with a mounting opening (11) communicated with the washing chamber (100);

The water overflow seat (20) is arranged on the outer side wall of the box body (10) and covers the mounting opening (11) on the side wall of the box body (10), a water overflow chamber (200) with an opening and a water overflow flow channel (220) are defined in the water overflow seat (20), the opening of the water overflow chamber (200) is opposite to the mounting opening (11) on the side wall of the box body (10), the water overflow flow channel (220) is provided with a water overflow opening (221) which is communicated with the water overflow chamber (200) and is used for discharging water flow in the washing chamber (100), and the water overflow seat is characterized by further comprising a water outlet position drain pipe (60) connected to the water overflow flow channel (220), and a gas outlet (60 a) for discharging gas outwards is arranged on the water drain pipe (60).

2. The cleaning machine according to claim 1, wherein the drain pipe (60) extends vertically as a whole, and an exhaust branch pipe (604) extending obliquely upward is further connected to the main body of the drain pipe (60), and a top port of the exhaust branch pipe (604) is the air outlet (60 a).

3. The cleaning machine according to claim 1, wherein the drain pipe (60) comprises an upper pipe (601) and a lower pipe (602) which are sequentially arranged from top to bottom, the upper end part of the lower pipe (602) is in a taper pipe structure with a gradually enlarged caliber from bottom to top, a lower port of the lower pipe (602) is connected with the outer peripheral edge of the taper pipe structure through a connecting rib (603), and the upper port of the taper pipe structure is the air outlet (60 a).

4. The cleaning machine according to claim 1, wherein the drain pipe (60) comprises a first pipe (61) and a second pipe (62) which are vertically arranged and are arranged in a staggered manner in the vertical direction, the bottom of the first pipe (61) is connected with the second pipe (62) through a horizontal pipe (63) which horizontally extends, and the top port of the second pipe (62) is higher than the horizontal pipe (63), so that the air outlet (60 a) is formed.

5. The cleaning machine according to claim 1, wherein the drain pipe (60) comprises a first pipe (61) and a second pipe (62) which are vertically arranged and are arranged in a staggered manner in the vertical direction, the bottom of the first pipe (61) is connected with the upper part of the second pipe (62) through a first inclined pipe (64) extending obliquely upwards, the bottom of the first pipe (61) is also connected with the lower part of the second pipe (62) through a second inclined pipe (65) extending obliquely downwards, and the top port of the second pipe (62) is higher than the first inclined pipe (64), so that the air outlet (60 a) is formed.

6. The cleaning machine according to any one of claims 1 to 5, wherein the drain pipe (60) is further provided with a connecting branch pipe (66).

7. The cleaning machine according to any one of claims 1 to 5, wherein the main body of the overflow seat (20) is further provided with an overflow pipe (22), the overflow pipe (22) is shaped into an inverted L-shaped structure, the end of the transverse portion of the L-shaped overflow pipe (22) is connected with the overflow port (221), and the inner cavity of the overflow pipe (22) forms the overflow flow channel (220).

8. The washing machine as claimed in claim 7, wherein the drain pipe (60) is connected to a lower end of the vertical portion of the L-shaped overflow pipe (22).

9. The cleaning machine according to claim 7, wherein the overflow port (221) is located higher than the bottom wall of the overflow chamber (200).

10. The cleaning machine according to any one of claims 1 to 5, wherein the drain pipe (60) is further provided with a one-way valve through which water flows in one direction.