CN219070174U - A drainage structures and cleaning machine for cleaning machine - Google Patents

Abstract

The utility model relates to a drainage structure for a cleaning machine and the cleaning machine, wherein the drainage structure comprises a pump shell, a pump cavity is formed in the hollow part of the pump shell, a water inlet and a water outlet which are in fluid communication with the pump cavity are formed in the pump shell, and an exhaust port which is in fluid communication with the pump cavity is also formed in the pump shell; the valve cover is arranged at the exhaust port and can open or close the exhaust port; the driving part is arranged outside the pump shell, is in driving connection with the valve cover and is used for driving the valve cover to open or close the exhaust port. According to the utility model, the driving piece is arranged, so that the driving piece can drive the valve cover to move, and the working reliability is high relative to a mode that the valve cover only acts under the action of air pressure in the drainage channel, so that the exhaust port can be effectively ensured to be opened, and the air in the pump cavity can be exhausted.

Description

A drainage structures and cleaning machine for cleaning machine

Technical Field

The utility model relates to the technical field of dish washers, in particular to a drainage structure for a cleaning machine and the cleaning machine.

Background

A dishwasher is a device that sprays cold water or hot water to dishes to remove dirt adhering to the dishes or fruits and wash the dishes or fruits. The dish-washing machine is provided with a drainage pump and a drainage valve, and sewage is required to be drained after the washing work of the dish-washing machine is completed. When the drainage of the drainage pump is finished, the drainage valve is firstly closed, then the drainage pump is closed, after the pump is stopped, the hung drainage pipe is favorable for water which is not discharged to the drainage pipe to flow back into the pump cavity, but the water which flows back is mixed with air, air remains in the pump cavity in the last running time, and gas remains in the pump cavity after the drainage in the pump cavity is finished. The draining pump has no load (no water), half load (water-gas mixture) and full liquid (full load), and the efficiency of the draining pump in full load operation is best, so that the gas in the pump cavity of the draining pump can be discharged completely when the draining pump works.

In order to solve the above problems, chinese patent publication No. CN202122998061.X (publication No. CN 216776960U) discloses a valve pump mechanism for a cleaning machine and a cleaning machine, the valve pump mechanism includes a valve housing having a drain passage (corresponding to the above pump chamber) therein, the drain passage having a water inlet for communicating with a drain port of the cleaning machine and a water outlet for communicating with a drain pipe; the air outlet valve body is arranged on the valve shell, an air outlet channel communicated with the drainage channel is arranged in the air outlet valve body, and an air outlet valve port is formed in the air outlet valve body; the valve cover is arranged at the air outlet valve port of the air outlet valve body, is pushed by air pressure in the drainage channel to move away from the air outlet valve port to open the air outlet valve port, so that trapped air in the drainage channel is timely discharged, and the valve cover can also move close to the air outlet valve port to close the air outlet valve port.

However, the valve cover is pushed by air pressure in the drainage channel to move, and the valve cover and the air outlet valve body are matched through magnetic attraction, if the air pressure in the drainage channel is smaller, the valve cover cannot be opened to exhaust, and air still exists in the pump cavity, so that the full-load work of the drainage pump is influenced.

Disclosure of Invention

The first technical problem to be solved by the present utility model is to provide a drainage structure for a cleaning machine, which can reliably discharge the gas in the pump chamber.

The second technical problem to be solved by the utility model is to provide a cleaning machine applying the drainage structure aiming at the current state of the art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: a drainage structure for a cleaning machine includes

The pump comprises a pump shell, wherein a pump cavity is formed in the pump shell, a water inlet and a water outlet which are in fluid communication with the pump cavity are formed in the pump shell, and an exhaust port which is in fluid communication with the pump cavity is also formed in the pump shell;

a valve assembly comprising

The valve cover is arranged at the exhaust port and can open or close the exhaust port;

wherein the valve assembly further comprises

And the driving piece is in driving connection with the valve cover and is used for driving the valve cover to open or close the exhaust port.

In order to enable the driving member to work timely when needed, the valve cover is opened, and the water draining structure further comprises

The pressure sensor is arranged in the pump cavity and used for sensing the air pressure in the pump cavity;

and the input end of the controller is electrically connected with the pressure sensor, and the output end of the controller is electrically connected with the driving piece. Thus, the pressure sensor detects that the air pressure is increased, signals are transmitted to the controller, the controller controls the driving piece to work, and the valve cover is opened to exhaust.

When the cleaning machine works, the pump cavity and the cleaning cavity of the cleaning machine are required to be blocked, cleaning water and residues are prevented from entering the pump cavity, the pump cavity is divided into a first pump cavity and a second pump cavity along the water flow direction, the water inlet is in fluid communication with the first pump cavity, the water outlet and the air outlet are both in fluid communication with the second pump cavity, and the first pump cavity is provided with a water outlet valve for controlling the residues and the water to enter the drainage pump.

In order to be convenient for discharge the water in the pump chamber, be provided with in the second pump chamber and be used for sucking the water in the second pump chamber to the drain pump of outlet department, the second pump chamber includes first rivers passageway and the second rivers passageway that set gradually along the rivers direction, the drain pump includes the motor and the impeller that links to each other with the output shaft drive of motor, and the length direction of second rivers passageway is followed to the output shaft of motor extends, in the impeller was located the second rivers passageway, the outlet is located on the roof of second rivers passageway.

In order to ensure that the second pump cavity has enough space for assembling the impeller and enough power for water to enter the second pump cavity from the first pump cavity, the inner diameter of the first water flow channel is smaller than that of the second water flow channel, and the top wall of the first water flow channel is lower than that of the second water flow channel.

Preferably, the air outlet is also provided on the top wall of the second water flow passage, and the pressure sensor is provided adjacent to the air outlet. So as to improve the detection accuracy of the air pressure.

In order to further facilitate the discharge of air from the pump chamber, a drain pipe is connected to the drain port, and at least the portion of the drain pipe connected to the drain port extends upward. Therefore, the drain pipe has a certain hanging height, water flowing back by the drain pipe enters the pump cavity, and air is extruded to flow upwards, and finally flows out of the exhaust port.

The driving member may have various structural forms, such as a motor, and the valve cover is connected to an output shaft of the motor, preferably, the valve assembly is an electromagnetic valve, the driving member includes a coil seat and an elastic member, the elastic member acts on the valve cover to keep the valve cover moving toward the exhaust port, and in a state that the coil seat is energized, the valve cover moves close to the coil seat under the electromagnetic attraction force of the coil seat so as to be away from the exhaust port.

The utility model solves the second technical problem by adopting the technical proposal that: the utility model provides an use cleaning machine of above-mentioned drainage structures which characterized in that: the water draining device comprises a box body with a washing cavity, wherein a water outlet communicated with a water inlet of the pump shell is formed in the bottom wall of the box body, and the water draining structure is located below the box body.

After the dish washer is cleaned, an air inlet channel is usually required to be arranged, hot air is blown in to dry tableware, so an air inlet communicated with a washing cavity is formed in the side wall of the box body, a shell outside the box body is arranged on the side wall of the box body, an air channel is formed in the hollow inside the shell, an air outlet connected with the air channel and the air inlet is formed in the shell, an air inlet connected with the air channel and the outside is also formed in the shell, a heating piece arranged between the air outlet and the air inlet is arranged in the air channel, an exhaust pipe is connected to the air outlet, and the exhaust pipe is in fluid communication with the air channel. The air outlet is communicated with the air duct, the air is discharged into the air duct, and the air is heated and then enters the cleaning machine to dry tableware, so that the utilization rate is high.

In order to drive the outside air to the position of a possible air outlet, a fan is further arranged in the air duct, an air inlet hole of the fan is in fluid communication with an air inlet of the shell, and an air outlet hole of the fan is in fluid communication with an air outlet of the shell.

Compared with the prior art, the utility model has the advantages that: according to the utility model, the driving piece is arranged, so that the driving piece can drive the valve cover to move, and the working reliability is high relative to a mode that the valve cover only acts under the action of air pressure in the drainage channel, so that the exhaust port can be effectively ensured to be opened, and the air in the pump cavity can be exhausted.

Drawings

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

FIG. 2 is a schematic view of a part of the structure of FIG. 1;

FIG. 3 is a schematic view of the drainage structure of FIG. 1;

FIG. 4 is a schematic view of the structure of FIG. 3 with the exhaust pipe and drain pipe removed;

FIG. 5 is a cross-sectional view of FIG. 4;

FIG. 6 is an enlarged view at A of FIG. 5;

fig. 7 is a schematic structural view of the drying structure in fig. 1;

fig. 8 is a cross-sectional view of the partial structure of fig. 1.

Detailed Description

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

As shown in fig. 1 to 8, the cleaning machine of the present preferred embodiment includes a tank 8, a drain structure, and a drying structure.

The drainage structure comprises a pump shell 1, a valve assembly 2, a pressure sensor 3, a drainage pump 4 and a drainage valve 5.

As shown in fig. 3 to 6, the pump housing 1 is hollow to form a pump cavity 11, a water inlet 12 and a water outlet 13 which are in fluid communication with the pump cavity 11 are formed on the pump housing 1, and an air outlet 14 which is in fluid communication with the pump cavity 11 is also formed on the pump housing 1. In this embodiment, the pump chamber 11 is divided into a first pump chamber 111 and a second pump chamber 112 along the water flow direction, the water inlet 12 is in fluid communication with the first pump chamber 111, the water outlet 13 and the air outlet 14 are both in fluid communication with the second pump chamber 112, and the water outlet valve 5 for controlling the residue and water to enter the drain pump 4 is arranged on the first pump chamber 111. The drain valve 5 adopts the prior art, and will not be described herein, when the cleaning machine works, the drain valve 5 blocks the fluid in the first pump cavity 111, and the fluid cannot enter the second pump cavity 112.

The second pump cavity 112 comprises a first water flow channel 1121 and a second water flow channel 1122 which are sequentially arranged along the water flow direction, a drainage pump 4 used for sucking water in the second pump cavity 112 to the drainage outlet 13 is arranged in the second pump cavity 112, the drainage pump 4 comprises a motor 41 and an impeller 42 connected with the output shaft of the motor 41 in a driving manner, the output shaft of the motor 41 extends along the length direction of the second water flow channel 1122, the impeller 42 is arranged in the second water flow channel 1122, the drainage outlet 13 is arranged on the top wall of the second water flow channel 1122, the drainage outlet 13 is connected with a drainage pipe 6, and at least the part of the drainage pipe 6 connected with the drainage outlet 13 extends upwards. So that the drain pipe 6 has a certain hanging height, water can flow into the pump cavity 11 to discharge gas.

The inner diameter of the first water flow passage 1121 is smaller than the inner diameter of the second water flow passage 1122, and the top wall of the first water flow passage 1121 is lower than the top wall of the second water flow passage 1122. Such a construction, while ensuring that there is sufficient space in the second pumping chamber 112 to accommodate the impeller 42 and sufficient power to move water from the first pumping chamber 111 into the second pumping chamber 112, also results in insufficient water flowing back only through the drain pipe 6 to completely squeeze out the air in the pumping chamber 11, and therefore requires the provision of the vent 14 and the valve assembly 2 to ensure the evacuation of the gas.

As shown in fig. 6, the valve assembly 2 includes a valve cover 21 and a driving member, the valve cover 21 is movably provided at the exhaust port 14, and the valve cover 21 is movable in a direction toward or away from the exhaust port 14 to open or close the exhaust port 14. A driving member is provided outside the pump housing 1, and is drivingly connected to the valve cover 21 for driving the valve cover 21 to open or close the exhaust port 14.

The valve assembly 2 of the present embodiment is a solenoid valve, the driving member includes an electromagnet and an elastic member 23, the elastic member 23 is a spring, the spring keeps the valve cover 21 moving toward the exhaust port 14, and in a state in which the electromagnet is energized, the valve cover 21 moves toward the electromagnet under the electromagnetic attraction force of the electromagnet so as to be away from the exhaust port 14, so as to open the exhaust port 14. The solenoid valve may be of conventional construction, only a few of which are briefly described herein, and the remaining components are not described again.

The solenoid valve further comprises a valve body 26 having a hollow interior, and the valve cover 21 and the driving member are both disposed in the valve body 26. The valve body 26 may be of a split design, and the valve body 26 is assembled after the valve cap 21 and the driving member are assembled. The valve body 26 has an inlet port 261 communicating with the exhaust port 14 and an outlet port 262 communicating with the exhaust pipe 15 below.

A seal ring 24 is provided between the valve cover 21 and the exhaust port 14, and a tapered insertion portion 25 is formed on the bottom wall surface of the valve cover 21 so as to be inserted into the exhaust port 14.

The pump chamber 11 is provided with a pressure sensor 3 for sensing the air pressure in the pump chamber 11, and the cleaning machine is provided with a controller, of course, the controller can also be arranged on the pump shell 1, the input end of the controller is electrically connected with the pressure sensor 3, and the output end of the controller is electrically connected with the driving part. When the pressure sensor 3 detects that the air pressure is increased, a signal is transmitted to the controller, and the controller controls the driving member to work, so that the valve cover 21 is opened for exhausting. The electrical connection among the pressure sensor 3, the controller and the driving element may be made by using the existing technology, and will not be described herein.

An exhaust port 14 is also provided on the top wall of the second water flow passage 1122, and the pressure sensor 3 is provided adjacent to the exhaust port 14.

The box body 8 is provided with a washing cavity 80, a water outlet 81 communicated with the water inlet 12 of the pump shell 1 is formed in the bottom wall of the box body 8, and a drainage structure is positioned below the box body 8.

The drying structure comprises a shell 7 arranged on the side wall of a box body 8 and positioned outside the box body 8, an air inlet 82 communicated with a washing cavity 80 is formed in the side wall of the box body 8, an air channel 71 is formed in the interior of the shell 7 in a hollow mode, a heating element (not shown in the figure) and a fan (not shown in the figure) are arranged in the air channel 71, an air outlet 72 communicated with the air channel 71 and the air inlet 82 is formed in the shell 7, an air inlet 73 communicated with the air channel 71 and the outside is formed in the shell 7, the heating element is arranged between the air outlet 72 and the air inlet 73, an air inlet hole of the fan is in fluid communication with the air inlet 73 of the shell 7, an air outlet hole of the fan is in fluid communication with the air outlet 72 of the shell 7, an exhaust pipe 15 is connected to the air outlet 14, and the exhaust pipe 15 is in fluid communication with the air channel 71. The exhaust port 14 is communicated with the air duct 71, the air is discharged into the air duct 71, and the air is heated and then enters the cleaning machine to dry tableware, so that the utilization rate is high. The heating element may be an existing PTC heating element.

The working process of the drainage structure of this embodiment is as follows:

the drain valve 5 is opened to communicate the first pump chamber 111 with the second pump chamber 112, water in the washing chamber 80 enters the pump chamber 11, because the top wall of the second water flow passage 1122 is higher than the top wall of the first water flow passage 1121, water cannot completely drain air in the pump chamber 11, and air trapping phenomenon occurs in the second water flow passage 1122, but the residual air is squeezed by the water flow, the air pressure rises, the pressure sensor 3 senses that the air pressure is increased, the driving member is controlled to work by the controller, the valve cover 21 is clamped, the air trapped in the pump chamber 11 is drained, and the drain pump 4 starts to operate under full load.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present utility model may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity.

The term "fluid communication" as used herein refers to a spatial positional relationship between two components or parts (hereinafter collectively referred to as a first part and a second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow along a flow path from the first part to the second part or/and be transported to the second part, or the first part and the second part may be directly communicated with each other, or the first part and the second part may be indirectly communicated with each other through at least one third party, and the third party may be a fluid channel such as a pipe, a channel, a conduit, a flow guiding member, a hole, a groove, or the like, or a chamber allowing the fluid to flow through, or a combination thereof.

Claims (11)

1. A drainage structure for a cleaning machine includes

The pump comprises a pump shell (1), wherein a pump cavity (11) is formed in the pump shell (1), a water inlet (12) and a water outlet (13) which are in fluid communication with the pump cavity (11) are formed in the pump shell (1), and an exhaust port (14) which is in fluid communication with the pump cavity (11) is also formed in the pump shell (1);

valve assembly (2) comprising

A valve cover (21) which is arranged at the exhaust port (14) and can open or close the exhaust port (14);

characterized in that the valve assembly (2) further comprises

And the driving piece is in driving connection with the valve cover (21) and is used for driving the valve cover (21) to open or close the exhaust port (14).

2. The drainage structure of claim 1, wherein: the drainage structure further comprises

The pressure sensor (3) is arranged in the pump cavity (11) and is used for sensing the air pressure in the pump cavity (11);

and the input end of the controller is electrically connected with the pressure sensor (3), and the output end of the controller is electrically connected with the driving piece.

3. The drainage structure of claim 2, wherein: the utility model discloses a drainage pump, including pump chamber (11), drain valve (5), pump chamber (112), water inlet (12), outlet (13), outlet (14), pump chamber (112) are divided into first pump chamber (111) and second pump chamber (112) along the rivers direction, water inlet (12) and first pump chamber (111) fluid communication, outlet (13) and gas vent (14) all with second pump chamber (112) fluid communication, be provided with in second pump chamber (112) and be used for sucking the water in second pump chamber (112) to drain pump (4) of outlet (13) department, be provided with on first pump chamber (111) and be used for controlling residue and water entering drain valve (5) in drain pump (4).

4. A drainage structure according to claim 3 wherein: the second pump cavity (112) comprises a first water flow channel (1121) and a second water flow channel (1122) which are sequentially arranged along the water flow direction, the drainage pump (4) comprises a motor (41) and an impeller (42) connected with the output shaft of the motor (41) in a driving mode, the output shaft of the motor (41) extends along the length direction of the second water flow channel (1122), the impeller (42) is arranged in the second water flow channel (1122), and the drainage outlet (13) is arranged on the top wall of the second water flow channel (1122).

5. The drainage structure of claim 4, wherein: the inner diameter of the first water flow channel (1121) is smaller than the inner diameter of the second water flow channel (1122), and the top wall of the first water flow channel (1121) is lower than the top wall of the second water flow channel (1122).

6. The drainage structure of claim 2, wherein: the exhaust port (14) is also arranged on the top wall of the second water flow channel (1122), and the pressure sensor (3) is arranged adjacent to the exhaust port (14).

7. The drainage structure of claim 1, wherein: the water outlet (13) is connected with a water outlet (6), and at least the part of the water outlet (6) connected with the water outlet (13) extends upwards.

8. The drainage structure of any one of claims 1 to 7, wherein: the valve assembly (2) is an electromagnetic valve, the driving piece is located outside the pump cavity (11), the driving piece comprises an electromagnet and an elastic piece (23), the elastic piece (23) acts on the valve cover (21) to enable the valve cover (21) to keep a trend of moving towards the exhaust port (14), and in the state that the electromagnet is electrified, the valve cover (21) moves close to the electromagnet under the electromagnetic attraction of the electromagnet so as to be away from the exhaust port (14).

9. A washer applying the drainage structure of any one of claims 1 to 8, characterized in that: the water draining device comprises a box body (8) with a washing cavity (80), wherein a water outlet (81) communicated with a water inlet (12) of the pump shell (1) is formed in the bottom wall of the box body (8), and the water draining structure is located below the box body (8).

10. The cleaning machine of claim 9, wherein: an air inlet (82) communicated with the washing cavity (80) is formed in the side wall of the box body (8), a shell (7) located outside the box body is arranged on the side wall of the box body (8), an air channel (71) is formed in the interior of the shell (7), a heating piece (9) is arranged in the air channel (71), an air outlet (72) communicated with the air channel (71) and the air inlet (82) is formed in the shell (7), an air inlet (73) communicated with the air channel (71) and the outside is further formed in the shell (7), the air outlet (14) is in fluid communication with an exhaust pipe (15), and the exhaust pipe (15) is in fluid communication with the air channel (71).

11. The cleaning machine of claim 10, wherein: the air duct (71) is also internally provided with a fan, an air inlet hole of the fan is in fluid communication with an air inlet (73) of the shell (7), and an air outlet hole of the fan is in fluid communication with an air outlet (72) of the shell (7).

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