Overflow seat for cleaning machine and cleaning machine

Abstract

The utility model relates to an overflow seat for a cleaning machine, which comprises a seat body, the interior of the seat body is hollow to form an overflow cavity, the top of the seat body is provided with an air pressure balance channel communicated with the overflow cavity, the bottom of the seat body is connected with a water inlet pipe for supplying water to a washing cavity through an opening, and the local inner diameter of the water inlet pipe is shrunk to form a throat part. And the throat part is communicated with the air pressure balance channel through an air guide pipe. The throat part is arranged at the local part of the water inlet pipe and is communicated with the air pressure balance channel through the air guide pipe and the throat part, so that in the water inlet process, when water flows through the throat part, negative pressure can be formed at the throat part due to the fact that the flow speed of the water flow at the throat part is large, and air in the air pressure balance channel is sucked in; the gas and the liquid are fully fused and then enter the washing cavity, a gas-liquid two-phase flow washing medium can be obtained, when tableware, fruits and vegetables are washed, especially the fruits and vegetables are washed, water flow carrying bubbles can effectively improve the stripping force of pollutants, and then the washing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to an overflow seat for a cleaning machine and a cleaning machine. Background Art

[0002] Generally, a dishwasher pumps water up and sprays it onto the dishes in the cleaning space to achieve the cleaning effect. An overflow protection structure is generally provided on the dishwasher. When the liquid level sensor in the overflow protection structure detects that the liquid level in the water tank reaches a preset dangerous height, an alarm sound will be sent to the user through the control system and the water inlet will be cut off.

[0003] The prior patent ZL 201920162474.4 "An overflow protection device for a cleaning machine" of the applicant discloses a structure, which includes a pipeline main body. An opening is provided on the pipeline main body, and a cavity is formed at the position of the pipeline main body corresponding to the opening. An overflow cavity is arranged in the cavity. An overflow opening is provided at the top of the overflow cavity, and an overflow protection channel for discharging the water flowing through the overflow opening is connected to the overflow opening. The overflow protection channel includes a first chamber arranged above the overflow opening and communicated with the overflow opening, and a second chamber communicated with the end of the first chamber far away from the overflow opening and extending downward. A water outlet is provided at the bottom of the second chamber. In the water flow path, the cross-sectional area of the second chamber in the overflow protection channel is smaller than that of the first chamber.

[0004] The above structure utilizes the siphon effect in the overflow protection channel, without the need to set an overflow protection sensor and an external drainage power device, with low maintenance cost and simple structure, and can meet the large water volume drainage requirements. At present, the washing effect of ordinary washing water is weak, and usually detergents need to be added to clean it, which is difficult to meet the more needs of consumers. Summary of the Utility Model

[0005] The first technical problem to be solved by the utility model is to provide an overflow seat for a cleaning machine that can automatically send air into the incoming water during the water inlet process, so that the incoming water is entrained with bubbles, thereby improving the cleaning effect, in view of the current situation of the prior art.

[0006] The second technical problem to be solved by the utility model is to provide a cleaning machine applying the above overflow seat, in view of the current situation of the prior art.

[0007] The technical solution adopted by the utility model to solve at least one of the above technical problems is as follows:

[0008] An overflow seat for a cleaning machine, comprising a seat body. The interior of the seat body is hollow to form an overflow chamber. An opening is provided on the side wall of the seat body to communicate the overflow chamber with the washing chamber of the cleaning machine. A pneumatic balance channel communicating with the overflow chamber is arranged at the top of the seat body. A water inlet pipe for supplying water to the washing chamber through the opening is connected to the bottom of the seat body. A partial inner diameter of the water inlet pipe is constricted to form a throat portion, and the throat portion is communicated with the pneumatic balance channel through a gas guide pipe.

[0009] In the utility model, a throat portion is provided at a part of the water inlet pipe and is communicated with the pneumatic balance channel through a gas guide pipe. During the water inlet process, when the water flow passes through the throat portion, due to the large water flow velocity at the throat portion, a negative pressure will be formed at the throat portion, sucking the gas in the pneumatic balance pipe. The gas and liquid will be fully mixed and then enter the washing chamber, and a gas-liquid two-phase flow cleaning medium can be obtained. When washing tableware, fruits and vegetables, especially fruits and vegetables, the water flow carrying bubbles can effectively improve the stripping force of pollutants, thereby improving the cleaning effect.

[0010] Preferably, a first tapered section, a straight pipe section, and a second tapered section are sequentially connected along the water inlet direction at a part of the water inlet pipe. The inner diameter of the first tapered section gradually decreases along the water inlet direction. The inner diameter of the straight pipe section is the same as the diameter of the upper port of the first tapered section. The inner diameter of the second tapered section is the same as the inner diameter of the straight pipe section and gradually increases along the water inlet direction. The lower end of the gas guide pipe is communicated with the straight pipe section. With the above structure, a negative pressure can be formed at the straight pipe section during the water inlet process, so that the gas is sucked into it through the gas guide pipe.

[0011] Preferably, the lower end of the gas guide pipe is obliquely connected to the straight pipe section, and the included angle a between the lower end of the gas guide pipe and the water incoming side in the straight pipe section is an acute angle. With the above structure, the air intake direction is kept consistent with the water inlet direction, avoiding affecting the water inlet, and being beneficial to improving the air intake effect and increasing the air intake volume.

[0012] Preferably, the upper end of the gas guide pipe is obliquely connected to the pneumatic balance channel, and the included angle b between the upper end of the gas guide pipe and the gas outgoing side in the pneumatic balance pipe is an obtuse angle. With the above structure, the gas output direction is roughly consistent with the incoming gas direction to improve the gas output effect.

[0013] Preferably, a water inlet corresponding to the upper end of the water inlet pipe is provided on the bottom wall of the seat body, and a baffle is arranged at the bottom of the overflow chamber to surround the water inlet so as to isolate the water inlet from the overflow chamber. Setting this baffle to isolate the water inlet from the overflow chamber can prevent the water inlet from being mixed into the overflow chamber and being discharged by mistake.

[0014] Preferably, the cross section of the baffle is an inverted U-shaped structure, and the semi-enclosed cavity of the U-shaped structure and the inner bottom wall of the overflow cavity enclose a water inlet cavity that can directly introduce the incoming water into the washing cavity through the opening. This structure can shorten the water inlet path and quickly deliver the incoming water to the washing cavity.

[0015] Preferably, the throat is arranged close to the water inlet, and the baffle covers the water inlet so that the water inlet forms a gas-melting chamber for mixing gas and water. This structure fully fuses gas and water with the help of the water inlet, so that bubbles are evenly dispersed in the water to improve the washing effect.

[0016] Preferably, an overflow pipe capable of discharging overflow water is provided at the top of the overflow chamber near a corner, and the overflow pipe is an inverted U-shaped structure, which facilitates timely discharge of overflow water in the overflow chamber through the siphon effect.

[0017] A cleaning machine comprises an inner tank, a side wall of which is provided with a flow guide port, and the overflow seat, which is arranged on the outer side wall of the inner tank and whose opening is connected to the flow guide port.

[0018] Compared with the prior art, the utility model has the following advantages: the utility model sets a throat part in a part of the water inlet pipe, and connects the throat part with the air pressure balance channel through an air guide pipe. During the water inlet process, when the water flows through the throat part, due to the large water flow velocity at the throat part, a negative pressure will be formed at the throat part, and the gas in the air pressure balance pipe will be sucked in. The gas and liquid will be fully merged and enter the washing chamber, so that a gas-liquid two-phase flow cleaning medium can be obtained. When washing tableware, fruits and vegetables, especially washing fruits and vegetables, the water flow carrying bubbles can effectively improve the stripping force of pollutants, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the overflow seat of the utility model embodiment;

[0020] Figure 2 for Figure 1 sectional view of . DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] like Figures 1-2As shown in the figure, the overflow seat of the cleaning machine in this embodiment includes a seat body 1. The interior of the seat body 1 is hollow to form an overflow chamber 11. An opening 12 is provided on the side wall of the seat body 1 to communicate the overflow chamber 11 with the washing chamber of the cleaning machine. A pneumatic balance channel 2 communicating with the overflow chamber 11 is provided at the top of the seat body 1. A water inlet pipe 3 for supplying water to the washing chamber through the opening 12 is connected to the bottom of the seat body 1. A partial inner diameter of the water inlet pipe 3 contracts to form a throat portion 30. The throat portion 30 is communicated with the pneumatic balance channel 2 through a gas guide pipe 4.

[0023] In this embodiment, a throat portion 30 is provided at a part of the water inlet pipe 3 and is communicated with the pneumatic balance channel 2 through the gas guide pipe 4. During the water inlet process, when the water flow passes through the throat portion 30, due to the large water flow velocity at the throat portion 30, a negative pressure will be formed at the throat portion 30, sucking the gas in the pneumatic balance pipe. The gas and liquid will be fully mixed and then enter the washing chamber, and a gas-liquid two-phase flow cleaning medium can be obtained. When washing tableware and fruits and vegetables, especially fruits and vegetables, the water flow carrying bubbles can effectively improve the stripping force of pollutants, thereby improving the cleaning effect.

[0024] A first tapered section 31, a straight pipe section 33, and a second tapered section 32 are sequentially connected along the water inlet direction at a part of the water inlet pipe 3. The inner diameter of the first tapered section gradually decreases along the water inlet direction. The inner diameter of the straight pipe section 33 is consistent with the diameter of the upper port of the first tapered section 31. The inner diameter of the second tapered section 32 is consistent with the inner diameter of the straight pipe section 33 and gradually increases along the water inlet direction. The lower end of the gas guide pipe 4 is communicated with the straight pipe section 33. With the above structure, a negative pressure can be formed at the straight pipe section 33 during the water inlet process, so as to suck the gas into it through the gas guide pipe 4.

[0025] The lower end of the gas guide pipe 4 is obliquely connected to the straight pipe section 33, and the included angle a between the lower end of the gas guide pipe 4 and the water incoming side in the straight pipe section 33 is an acute angle. With the above structure, the air inlet direction is kept consistent with the water inlet direction, avoiding affecting the water inlet and being beneficial to improving the air inlet effect and increasing the air inlet volume.

[0026] The upper end of the gas guide pipe 4 is obliquely connected to the pneumatic balance channel 2, and the included angle b between the upper end of the gas guide pipe 4 and the gas outgoing side in the pneumatic balance pipe is an obtuse angle. With the above structure, the gas output direction is roughly consistent with the incoming gas direction to improve the gas output effect.

[0027] A water inlet 13 corresponding to the upper end of the water inlet pipe 3 is provided on the bottom wall of the seat body 1. A baffle 14 is provided at the bottom of the overflow chamber 11 to surround the water inlet 13, thereby isolating the water inlet from the overflow chamber 11. Setting the baffle 14 to isolate the water inlet from the overflow chamber 11 can prevent the water inlet from being mixed into the overflow chamber 11 and being accidentally discharged.

[0028] The cross section of the baffle 14 is an inverted U-shaped structure, and the semi-enclosed cavity of the U-shaped structure and the inner bottom wall of the overflow cavity 11 enclose an inlet cavity 15 that can directly introduce the incoming water into the washing cavity through the opening 12. This structure can shorten the water inlet path and quickly deliver the incoming water to the washing cavity.

[0029] The throat portion 30 is arranged close to the water inlet cavity 15, and the baffle 14 covers the water inlet 13 so that the water inlet cavity 15 forms a gas-melting cavity for mixing gas and water. This structure fully fuses gas and water with the help of the water inlet cavity 15, so that bubbles are evenly dispersed in the water flow to improve the washing effect.

[0030] The top of the overflow chamber 11 is provided with an overflow pipe 5 near a corner for discharging overflow water, and the overflow pipe 5 is an inverted U-shaped structure, which facilitates timely discharging of overflow water in the overflow chamber 11 through the siphon effect.

[0031] The cleaning machine of this embodiment includes an inner tank, a side wall of which is provided with a flow guide port, and also includes the above-mentioned overflow seat, which is provided on the outer side wall of the inner tank and whose opening 12 is connected to the flow guide port.

[0032] In this embodiment, a throat portion 30 is provided locally at the water inlet pipe 3, and the throat portion 30 is connected to the air pressure balance channel 2 through the air guide pipe 4. During the water inlet process, when the water flows through the throat portion 30, due to the large water flow velocity at the throat portion 30, a negative pressure is formed at the throat portion 30, and the gas in the air pressure balance pipe is sucked in. The gas and liquid are fully merged and enter the washing chamber, and a gas-liquid two-phase flow cleaning medium can be obtained. When washing tableware, fruits and vegetables, especially when washing fruits and vegetables, the water flow carrying bubbles can effectively improve the stripping force of pollutants, thereby improving the cleaning effect.

[0033] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. An overflow seat for a washing machine, comprising a seat body (1), the interior of the seat body (1) is hollow to form an overflow cavity (11), an opening (12) communicating the overflow cavity (11) with the washing cavity of the washing machine is provided on the side wall of the seat body (1), a pneumatic balance channel (2) communicating with the overflow cavity (11) is arranged at the top of the seat body (1), a water inlet pipe (3) for supplying water to the washing cavity through the opening (12) is connected to the bottom of the seat body (1), and it is characterized in that: The local inner diameter of the water inlet pipe (3) is contracted to form a throat portion (30), and the throat portion (30) is connected to the air pressure balance channel (2) via an air guide pipe (4).

2. The water overflow seat for a cleaning machine according to claim 1, characterized in that: The water inlet pipe (3) is partially formed with a first conical section, a straight pipe section, and a second conical section which are connected in sequence along the water inlet direction. The inner diameter of the first conical section gradually decreases along the water inlet direction. The inner diameter of the straight pipe section matches the diameter of the upper end of the first conical section. The inner diameter of the second conical section matches the inner diameter of the straight pipe section and gradually increases along the water inlet direction. The lower end of the air guide pipe (4) is connected to the straight pipe section.

3. The water overflow seat for a cleaning machine according to claim 2, characterized in that: The lower end of the air guide pipe (4) is connected to the straight pipe section at an angle, and the angle a between the lower end of the air guide pipe (4) and the water inlet side of the straight pipe section is an acute angle.

4. The water overflow seat for a cleaning machine according to claim 1 or 2 or 3, characterized in that: The upper end of the air guide pipe (4) is connected to the air pressure balance channel (2) at an angle, and the angle b between the upper end of the air guide pipe (4) and the degassing side of the air pressure balance pipeline is an obtuse angle.

5. The water overflow seat for a cleaning machine according to claim 1 or 2 or 3, characterized in that: The bottom wall of the seat body (1) is provided with a water inlet (13) arranged corresponding to the upper end of the water inlet pipe (3), and the bottom of the overflow chamber (11) is provided with a baffle (14) capable of surrounding the water inlet (13) and isolating the incoming water from the overflow chamber (11).

6. The water overflow seat for a washing machine according to claim 5, characterized in that: The cross section of the baffle (14) is an inverted U-shaped structure, and a water inlet cavity is enclosed between the semi-enclosed cavity of the U-shaped structure and the inner bottom wall of the overflow cavity (11), which can directly introduce the incoming water into the washing cavity through the opening (12).

7. The water overflow seat for a cleaning machine according to claim 6, characterized in that: The throat portion (30) is arranged close to the water inlet cavity, and the baffle (14) covers the water inlet (13) so that the water inlet cavity forms a melting cavity where gas and water flow are mixed.

8. The water overflow seat for a cleaning machine according to claim 1 or 2 or 3, characterized in that: An overflow pipe (5) capable of discharging overflow water is arranged at the top of the overflow chamber (11) near a corner, and the overflow pipe (5) is in an inverted U-shaped structure.

9. A cleaning machine, including an inner tank, wherein a diversion port is arranged on the side wall of the inner tank, and it is characterized in that: It also comprises the overflow seat according to any one of claims 1 to 8, wherein the overflow seat is arranged on the outer wall of the inner container and its opening (12) is connected to the guide port.

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