Water pump volute for cleaning machine, water pump and cleaning machine

Abstract

The utility model relates to a water pump volute for a cleaning machine, a water pump and the cleaning machine, the side part of the volute is provided with a first flow channel and a second flow channel, a first baffle tongue and a second baffle tongue are formed between the flow channels and the volute, and a volute line projected by the volute in a horizontal plane comprises a first volute line section taking the first baffle tongue as a starting point and a second volute line section taking the second baffle tongue as a starting point. The first volute segment is longer than the second volute segment. According to the utility model, the first spiral line section part is used for pressurizing the second flow channel, the second spiral line section part is used for pressurizing the first flow channel, the flow rate and the pressure of water flow output by the second flow channel are greater than those of the first flow channel, the second flow channel is used for supplying water to the lower spraying arm, and the first flow channel is used for supplying water to the upper spraying arm. The lower spraying arm serves as a main cleaning source, the upper spraying arm assists in cleaning, the flow and water pressure of two paths of water flow are distributed more reasonably, the cleaning requirement of the small-size dish washing machine is met, energy is saved, and the cleaning effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a water pump volute, a water pump and a washing machine for washing machines. Background Art

[0002] Dishwashers have been widely used in home kitchens. Dishwashers are generally provided with a spray arm for spraying water, a concave water return area is provided at the bottom of the cabinet, the top of the water return area is covered with a filter plate, and a water pump is used to pump water from the water return area to the spray arm above the filter plate to realize the circulation spraying of washing water.

[0003] The applicant's prior application CN202410042279.3 "Open water pump and cleaning machine for cleaning machine" discloses a structure, in which the water pump includes a disc-shaped volute, a water inlet is opened at the bottom of the volute, and a first water outlet and a second water outlet are opened on the side at intervals. The volute line projected on the horizontal plane includes a first volute line segment and a second volute line segment which are axially symmetrical. The first volute line segment is used to pressurize the water flow to the first water outlet, and the second volute line segment is used to pressurize the water flow to the second water outlet.

[0004] The above-mentioned water pump structure is mainly used for large-volume dishwashers, that is, dishwashers that can perform upper and lower layer cleaning. The flow requirements for upper and lower layer cleaning are similar. The two axially symmetrical spiral lines can evenly pressurize the two water outlets, thereby balancing the water flow and water pressure of the two channels. However, for small-volume sink dishwashers, they mainly rely on the lower spray arm for cleaning, and the upper spray arm is only used to provide low-intensity auxiliary cleaning. When the above-mentioned water pump is used, there is a problem of waste of upper water flow and insufficient cleaning intensity of the lower water flow. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide a water pump volute for a cleaning machine that can more reasonably distribute two-way water flow and water pressure to meet the small-capacity cleaning needs in view of the current status of the existing technology.

[0006] The second technical problem to be solved by the utility model is to provide a water pump with the volute as described above in view of the current status of the prior art.

[0007] The third technical problem to be solved by the utility model is to provide a cleaning machine using the above-mentioned water pump in view of the current status of the prior art.

[0008] The technical solution adopted by the utility model to solve at least one of the above technical problems is:

[0009] A water pump volute for a cleaning machine is disc-shaped, with a water inlet at the bottom of the volute, and a first flow channel and a second flow channel arranged at intervals on the side of the volute, a first baffle tongue is formed between the first flow channel and the volute, and a second baffle tongue is formed between the second flow channel and the volute, and a volute line projected by the volute in the horizontal plane includes a first volute line segment with the first baffle tongue as the starting point and a second volute line segment with the second baffle tongue as the starting point, and the length of the first volute line segment is greater than the length of the second volute line segment.

[0010] The utility model utilizes the first volute portion to pressurize the second flow channel and utilizes the second volute segment portion to pressurize the first flow channel. Since the length of the first volute segment is greater than that of the second volute segment, the flow rate and pressure of the water flow output through the second flow channel are greater than those of the first flow channel. The second flow channel can be used to supply water to the lower spray arm and the first flow channel can be used to supply water to the upper spray arm. For a small-volume dishwasher, the lower spray arm serves as the main cleaning source and the upper spray arm serves as an auxiliary cleaning source. The utility model meets the cleaning needs of a small-volume dishwasher by more reasonably distributing the flow rates and water pressures of the two water flows, which is beneficial to saving energy and improving the cleaning effect.

[0011] Preferably, the inner side wall of the volute corresponding to the first volute segment forms a first pressurizing surface for pressurizing the second flow channel, and the inner side wall of the volute corresponding to the second volute segment forms a second pressurizing surface for pressurizing the first flow channel. With the above structure, it is convenient to control the water flow rate and water pressure of the first flow channel and the second flow channel to meet special cleaning needs.

[0012] Preferably, the first baffle tongue forms a line segment L1 to the center of the pump housing, and the second baffle tongue forms a line segment L2 to the center of the pump housing, and L1 and L2 form an angle of 85-95°, preferably 90°. With such a structure, the best cleaning effect can be obtained for the requirements of the upper flow rate of the water tank cleaning machine of 15-21L / MIN and the bottom flow rate of 27-45L / MIN.

[0013] Preferably, the second flow channel at least extends spirally close to the outer periphery of the second spiral line segment at its starting section. This structure can reasonably design the length and curvature of the first flow channel and the second flow channel, thereby reducing the loss of water flow capacity and improving the cleaning effect.

[0014] Preferably, the end of the first flow channel is bent upward to form a first water outlet, and the end of the second flow channel is bent upward to form a second water outlet, and the aperture of the first water outlet is smaller than the aperture of the second water outlet. Preferably, the aperture of the second water outlet is 1 to 4 mm larger than the aperture of the first water outlet. Since the second water outlet directly supplies water to the lower spray arm at a low position, and the first water outlet needs to supply water to the upper spray arm through a water pipe extending upward, appropriately reducing the aperture of the first water outlet is conducive to reducing the loss of water flow capacity.

[0015] A water pump for a cleaning machine comprises an impeller and the above-mentioned volute, wherein the impeller is rotatably arranged in the volute.

[0016] Preferably, the distance from the edge of the impeller to the first baffle is d1, and the distance from the edge of the impeller to the second baffle is d2, and d2>d1. Further preferably, d1=3-5mm; d2=8-11mm. The above structure is used in conjunction with the first spiral line segment and the second spiral line segment of different lengths to pressurize the first flow channel and the second flow channel, which can effectively reduce the water pressure pulsation obtained at the baffle, reduce vibration and noise, and improve the overall pumping performance of the water pump.

[0017] A cleaning machine comprises a box body, a lower spray arm, and an upper spray arm. The bottom of the box body is provided with a concave return water area. The box body also comprises the above-mentioned water pump, which is arranged in the return water area. The first flow channel is connected to the upper spray arm through a water pipe extending upward, and the water outlet end of the second flow channel is connected to the lower spray arm.

[0018] Compared with the prior art, the advantages of the utility model are: the utility model utilizes the first spiral line segment to pressurize the second flow channel, and utilizes the second spiral line segment to pressurize the first flow channel. Since the length of the first spiral line segment is greater than the length of the second spiral line segment, the flow rate and pressure of the water flow output through the second flow channel are greater than those of the first flow channel. The second flow channel can be used to supply water to the lower spray arm, and the first flow channel can be used to supply water to the upper spray arm. For a small-volume dishwasher, the lower spray arm serves as the main cleaning source and the upper spray arm serves as an auxiliary cleaning source. The utility model meets the cleaning needs of a small-volume dishwasher by reasonably allocating the flow rate and water pressure of the two water flows, which is beneficial to saving energy and improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 for Figure 1 Schematic diagram from another angle;

[0021] Figure 3 for Figure 1 A cross-sectional view of

[0022] Figure 4 It is a spiral line diagram of the volute of the embodiment of the utility model;

[0023] Figure 5 This is a cross-sectional view of a water pump according to an embodiment of the utility model;

[0024] Figure 6 It is a schematic diagram of the structure of a cleaning machine according to an embodiment of the utility model. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 6 As shown, the water pump volute 1 for the cleaning machine in this embodiment is disc-shaped, with a water inlet 13 at the bottom of the volute 1, and a first flow channel 11 and a second flow channel 12 arranged at intervals on the side of the volute 1, a first baffle tongue 10 is formed between the first flow channel 11 and the volute, and a second baffle tongue 20 is formed between the second flow channel 12 and the volute 1, and the volute line projected by the volute 1 in the horizontal plane includes a first volute line segment 101 with the first baffle tongue 10 as the starting point, and a second volute line segment 201 with the second baffle tongue 20 as the starting point, and the length of the first volute line segment 101 is greater than the length of the second volute line segment 201.

[0027] In this embodiment, part of the first volute segment 101 is used to pressurize the second flow channel 12, and part of the second volute segment 201 is used to pressurize the first flow channel 11. Since the length of the first volute segment 101 is greater than the length of the second volute segment 201, the flow rate and pressure of the water output through the second flow channel 12 are greater than those of the first flow channel 11. The second flow channel 12 can be used to supply water to the lower spray arm, and the first flow channel 11 can be used to supply water to the upper spray arm. For a small-volume dishwasher, the lower spray arm serves as the main cleaning source and the upper spray arm assists in cleaning. The utility model meets the cleaning needs of a small-volume dishwasher by more reasonably distributing the flow rates and water pressures of the two water flows, which is beneficial to saving energy and improving cleaning effects.

[0028] The inner side wall of the volute 1 corresponding to the first volute segment 101 forms a first pressurizing surface 102 for pressurizing the second flow channel 12, and the inner side wall of the volute 1 corresponding to the second volute segment 201 forms a second pressurizing surface 202 for pressurizing the first flow channel 11. With the above structure, it is convenient to control the water flow rate and water pressure of the first flow channel 11 and the second flow channel 12 to meet special cleaning needs.

[0029] The first partition tongue 10 forms a line segment L1 to the center of the pump housing 1, and the second partition tongue 20 forms a line segment L2 to the center of the pump housing, and L1 and L2 form an angle a of 85-95°, preferably 90°. With such a structure, the best cleaning effect can be obtained for the requirements of the upper flow rate of the water tank cleaning machine of 15-21L / MIN and the bottom flow rate of 27-45L / MIN.

[0030] The second flow channel 12 at least extends spirally close to the outer periphery of the second spiral line segment 201 at its starting section. This structure can reasonably design the length and curvature of the first flow channel 11 and the second flow channel 12, thereby reducing the loss of water flow capacity and improving the cleaning effect.

[0031] The end of the first flow channel 11 is bent upward to form a first water outlet 111, and the end of the second flow channel 12 is bent upward to form a second water outlet 121. The aperture of the first water outlet 111 is smaller than the aperture of the second water outlet 121. The aperture of the second water outlet 121 is 1 to 4 mm larger than the aperture of the first water outlet 111, preferably 2 mm. Since the second water outlet 121 directly supplies water to the lower spray arm at a low position, and the first water outlet 111 needs to supply water to the upper spray arm through a water pipe extending upward, appropriately reducing the aperture of the first water outlet is conducive to reducing the loss of water flow capacity.

[0032] The water pump 2 for a cleaning machine in this embodiment includes an impeller 3 and the volute 1, wherein the impeller 3 is rotatably disposed in the volute 1. The distance from the edge of the impeller 3 to the first baffle 10 is d1, and the distance from the edge of the impeller 3 to the second baffle 20 is d2, wherein d2>d1, d1=3-5mm; d2=8-11mm. The above structure is used in conjunction with the first volute segment 101 and the second volute segment 201 of different lengths to pressurize the first flow channel 11 and the second flow channel 12, which can effectively reduce the water pressure pulsation obtained at the baffle, reduce vibration and noise, and improve the overall water pumping performance of the water pump.

[0033] The cleaning machine of this embodiment includes a box body 4, a lower spray arm 5, and an upper spray arm 6. A concave return water area 41 is provided at the bottom of the box body 4. The box body 4 also includes the above-mentioned water pump 2, which is arranged in the return water area 41. The first flow channel 11 is connected to the upper spray arm 6 through a water pipe 7 extending upward, and the water outlet end of the second flow channel 12 is connected to the lower spray arm 5.

[0034] The utility model utilizes the second flow channel 12 to supply water to the lower spray arm 5 and utilizes the first flow channel 11 to supply water to the upper spray arm 6. For a small-volume dishwasher, the lower spray arm serves as the main cleaning source and the upper spray arm assists in cleaning. The utility model satisfies the cleaning needs of a small-volume dishwasher by reasonably allocating the flow rates and water pressures of the two water flows, which is beneficial to saving energy and improving the cleaning effect.

[0035] 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. A water pump volute for a cleaning machine, in the shape of a disc, wherein a water inlet (13) is provided at the bottom of the volute (1), and a first flow channel (11) and a second flow channel (12) are provided at intervals on the side of the volute (1), characterized in that: A first baffle tongue (10) is formed between the first flow channel (11) and the volute (1), and a second baffle tongue (20) is formed between the second flow channel (12) and the volute (1). The volute line projected on the horizontal plane of the volute (1) includes a first volute line segment (101) with the first baffle tongue (10) as a starting point, and a second volute line segment (201) with the second baffle tongue (20) as a starting point. The length of the first volute line segment (101) is greater than the length of the second volute line segment (201).

2. The water pump volute for a cleaning machine according to claim 1, characterized in that: The inner side wall of the volute (1) corresponding to the first volute segment (101) forms a first pressurizing surface (102) for pressurizing the second flow channel (12), and the inner side wall of the volute (1) corresponding to the second volute segment (201) forms a second pressurizing surface (202) for pressurizing the first flow channel (11).

3. The water pump volute for a cleaning machine according to claim 2, characterized in that: The first partition tongue (10) forms a line segment L1 to the center of the pump housing, and the second partition tongue (20) forms a line segment L2 to the center of the pump housing, and L1 and L2 form an angle of 85 to 95 degrees.

4. The water pump volute for a cleaning machine according to any one of claims 1 to 3, characterized in that: The second flow channel (12) extends in a spiral manner close to the outer periphery of the second spiral segment (201) at least at its starting section.

5. The water pump volute for a cleaning machine according to any one of claims 1 to 3, characterized in that: The end of the first flow channel (11) is bent upward to form a first water outlet (111), and the end of the second flow channel (12) is bent upward to form a second water outlet (121), and the aperture of the first water outlet (111) is smaller than the aperture of the second water outlet (121).

6. The water pump volute for a cleaning machine according to claim 5, characterized in that: The aperture of the second water outlet (121) is 1 to 4 mm larger than the aperture of the first water outlet (111).

7. A water pump for a cleaning machine, comprising an impeller (3), characterized in that: It also comprises the volute (1) according to any one of claims 1 to 6, wherein the impeller (3) is rotatably arranged in the volute (1).

8. The water pump for a cleaning machine according to claim 7, characterized in that: The distance between the edge of the impeller (3) and the first partition tongue (10) is d1, and the distance between the edge of the impeller (3) and the second partition tongue (20) is d2, where d2>d1.

9. The water pump for a cleaning machine according to claim 8, characterized in that: d1=3~5mm; d2=8~11mm.

10. A cleaning machine, comprising a box (4), a lower spray arm (5), and an upper spray arm (6), wherein a concave water return area (41) is provided at the bottom of the box (4), characterized in that: It also includes a water pump (2) according to any one of claims 7 to 9, wherein the water pump (2) is arranged in the return water area (41), the first flow channel (11) is connected to the upper spray arm (6) through a water pipe (7) extending upward, and the water outlet end of the second flow channel (12) is connected to the lower spray arm (5).

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