Inner water pipe for cleaning machine and cleaning machine

Abstract

The inner water pipe comprises a water pipe body, the water pipe body comprises a first section located on the lower portion and vertically extending, a second section located on the upper portion and vertically extending and a bent section connected between the first section and the second section, the lower end of the bent section is connected with the upper end of the first section, and the lower end of the bent section is connected with the upper end of the second section. The upper end of the bent section is connected with the lower end of the second section, a first water outlet is formed in the front side wall of the bent section, and the inner side wall of the joint of the bent section and the lower end of the second section is arranged close to the edge of the first water outlet. The inner side wall of the joint of the bent section and the lower end of the second section is arranged close to the edge of the first water outlet, and the edge of the first water outlet basically corresponds to the side wall of the inner water pipe, so that water flow conveyed from bottom to top is output through the first water outlet once reaching the joint of the bent section and the second section; and vortex generated by buffering of the water flow is avoided, so that the conveying efficiency and lift of the water flow are improved, and the cleaning effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a washing machine used for washing tableware, fruits and vegetables. Background Art

[0002] For desktop and cabinet dishwashers, since their washing space is large, in order to achieve a better washing effect, they are generally designed with at least two sets of upper and lower spray arms; when working, the washing pump transports water to the upper and lower spray arms through pipes, and the water is sprayed out from each spray arm and rinses the dishes and then falls back into the water cup at the bottom of the dishwasher. The washing pump transports the fallen water to the upper and lower spray arms again to complete a cycle.

[0003] The applicant's prior application CN202011629756.4 "A water flow system and a cleaning machine using the water flow system" discloses a structure, which includes a spray device and a pump for supplying water to the spray device, the spray device includes a bottom spray arm, a middle spray arm, and a top spray arm, and the pump includes an upper impeller, a lower impeller, an upper shell, and a lower shell. The above scheme uses an open dual-pump system to supply water, and the power of the two water flows is independently supplied by the corresponding pumps, which increases the head and water flow of each water flow, which is conducive to improving the cleaning effect.

[0004] Since the above scheme adopts an open water pump, the bottom spray arm can be directly connected to the water pump, but the top spray arm needs to be connected to the water pump through the inner water pipe installed against the wall in the washing chamber for water supply. Limited by the partition structure of the chamber in our company's cleaning machine, the lower end of the inner water pipe cannot be centered, which requires a bending structure at the upper part of the inner water pipe to achieve the centering of the water outlet at the upper end of the inner water pipe. The bending structure is prone to water flow rotation and vortex generation, resulting in fluid energy loss, which greatly affects the normal transportation and transportation head of the water flow at this place, affecting the cleaning effect. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide an inner water pipe for a cleaning machine which can avoid vortex generation in water flow, thereby improving the conveying efficiency and lift and further improving the cleaning effect, in view of the current status of the prior art.

[0006] The second technical problem to be solved by the utility model is to provide a cleaning machine using the above-mentioned inner water pipe in view of the current status of the prior art.

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

[0008] An inner water pipe for a cleaning machine comprises a water pipe body extending from bottom to top, the water pipe body comprising a first section located at the bottom and extending vertically, a second section located at the top and extending vertically, and a bending section connected between the first section and the second section, the lower end of the bending section is connected to the upper end of the first section, the upper end of the bending section is connected to the lower end of the second section, a first water outlet is formed on the front side wall of the bending section, and the inner side wall of the connection between the bending section and the lower end of the second section is arranged close to the edge of the first water outlet.

[0009] In the present invention, the lateral width of the first section is greater than the lateral width of the second section, and the width of the bending section gradually decreases from bottom to top.

[0010] Preferably, the projection of the bending section in the axial direction of the first water outlet includes a first arc section located on the outside and a second arc section located on the inside, the length of the first arc section is greater than the length of the second arc section, and the two enclose a diversion channel that is arched upward obliquely. This structure is conducive to reducing fluid energy loss.

[0011] Preferably, the radius of the circle corresponding to the first arc segment is 6.7 to 7.9 times the radius of the first water outlet.

[0012] Preferably, the radius of the circle corresponding to the second arc segment is 2.5 to 3.5 times the radius of the first water outlet.

[0013] Preferably, the first arc segment is connected to the corresponding side wall of the second segment above it through a third arc segment, and the second arc segment is connected to the corresponding side wall of the second segment above it through a fourth arc segment. With such a structure, fluid energy loss can be further reduced.

[0014] Preferably, the radius of the circle corresponding to the third arc segment is smaller than the radius of the circle corresponding to the fourth arc segment, and there is a distance between the projection of the first water outlet in the axial direction and the third arc segment. With such a structure, it is convenient to transport the water flow transported from bottom to top to the second segment at a higher flow rate.

[0015] Preferably, the radius of the circle corresponding to the fourth arc segment is equal to the radius of the first water outlet, and the projection of the first water outlet on its axial direction is arranged close to the fourth arc segment. Furthermore, the partial projection of the first water outlet on its axial direction coincides with the fourth arc segment. With such a structure, the vortex problem at the first water outlet can be effectively eliminated, thereby improving the fluid delivery efficiency.

[0016] Preferably, the third arc segment is located above the fourth arc segment, and the upper end of the fourth arc segment is arranged corresponding to the lower end of the third arc segment. The front-to-back width of the bending segment is greater than the front-to-back width of the second segment, and the rear side wall of the water pipe body forms a diversion slope that tilts forward from bottom to top at the corresponding third arc segment. With such a structure, the water flow transported upward can be further pressurized, and the fluid energy loss at the joint can be eliminated, so that the water flow transported upward has better cleaning ability.

[0017] Preferably, the water pipe body further comprises a transverse portion that bends forward from the upper end of the second section and extends to the central portion of the top of the washing chamber of the washing machine, and the end of the transverse portion forms a second water outlet. The second water outlet can be connected to a top spray arm that sprays downward from the top of the washing chamber to rinse the back of the tableware in the upper bowl basket to improve the cleaning effect.

[0018] A cleaning machine comprises a box body, a water pump, a lower spray arm, and an upper spray arm. A concave water return area is provided at the bottom of the box body. The water pump is arranged in the water return area and has a water inlet, a first output port, and a second output port which are connected to the water return area. The lower spray arm is arranged in the box body and is arranged near the top of the water return area and is connected to the first output port. The machine also comprises the above-mentioned inner water pipe. The second output port of the water pump is connected to the lower end of the inner water pipe.

[0019] Compared with the prior art, the advantages of the utility model are: a first water outlet is opened on the front side wall of the bending section of the utility model, and the inner side wall of the connection between the bending section and the lower end of the second section is arranged close to the edge of the first water outlet. Since the edge of the first water outlet basically corresponds to the side wall of the inner water pipe, the water flow transported from bottom to top is output through the first water outlet as soon as it reaches the connection between the bending section and the second section, avoiding the buffering of the water flow here and the generation of vortex, which is beneficial to improve the water flow transportation efficiency and lift, and thus improve the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the water pipe in the embodiment of the utility model;

[0021] Figure 2 for Figure 1 Sectional view (vertical section) of the junction between the middle bending section and the second section;

[0022] Figure 3 for Figure 1 A cross-sectional view (cross section) of the junction between the middle bending section and the second section;

[0023] Figure 4 for Figure 1 A cross-sectional view of the junction between the middle bending section and the first and second sections. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] like Figures 1 to 4 As shown, the inner water pipe for the cleaning machine of this embodiment includes a water pipe body 1 extending from bottom to top, and the water pipe body 1 includes a first section 11 located at the bottom and extending vertically, a second section 12 located at the top and extending vertically, and a bending section 13 connected between the first section 11 and the second section 12, the lower end of the bending section 13 is connected to the upper end of the first section 11, the upper end of the bending section 13 is connected to the lower end of the second section 12, a first water outlet 131 is opened on the front side wall of the bending section 13, and the inner side wall of the connection between the bending section 13 and the lower end of the second section 12 is arranged close to the edge of the first water outlet 131.

[0026] In this embodiment, the lateral width of the first section 11 is greater than the lateral width of the second section 12, and the width of the bending section 13 gradually decreases from bottom to top. The projection of the bending section 13 in the axial direction of the first water outlet 131 includes a first arc section 1301 located on the outside and a second arc section 1302 located on the inside. The length of the first arc section 1301 is greater than the length of the second arc section 1302, and the two enclose a diversion channel 132 that is obliquely arched upward. This structure is conducive to reducing fluid energy loss.

[0027] The radius r1 of the circle corresponding to the first arc segment 1301 is 6.7 to 7.9 times the radius r of the first water outlet 131. The radius r2 of the circle corresponding to the second arc segment 1302 is 2.5 to 3.5 times the radius r of the first water outlet 131. This structure makes the connection between the bending section 13 and the first section 11 and the second section 12 slower and smoother. The first arc segment 1301 is connected to the corresponding side wall of the second section 12 above it through the third arc segment 1303, and the second arc segment 1302 is connected to the corresponding side wall of the second section 12 above it through the fourth arc segment 1304. The above can further reduce the fluid energy loss.

[0028] The radius r3 of the circle corresponding to the third arc segment 1303 is smaller than the radius r4 of the circle corresponding to the fourth arc segment 1304, and there is a distance d between the axial projection of the first water outlet 131 and the third arc segment 1303. With such a structure, it is convenient to transport the water flow transported from bottom to top to the second section 12 at a higher flow rate.

[0029] The radius r4 of the circle corresponding to the fourth arc segment 1304 is equal to the radius r of the first water outlet 131, and the projection of the first water outlet 131 in its axial direction is arranged close to the fourth arc segment 1304. In this embodiment, the partial projection of the first water outlet 131 in its axial direction coincides with the fourth arc segment 1304. With such a structure, the vortex problem at the first water outlet 131 can be effectively eliminated, thereby improving the fluid delivery efficiency.

[0030] The third arc segment 1303 is located above the fourth arc segment 1304, and the upper end of the fourth arc segment 1304 is arranged corresponding to the lower end of the third arc segment 1303. The front-to-back width of the bending segment 13 is greater than the front-to-back width of the second segment 12, and the rear side wall of the water pipe body 1 forms a diversion slope 1305 that tilts forward from bottom to top at the position corresponding to the third arc segment 1303. With such a structure, the water flow transported upward can be further pressurized, and the fluid energy loss at the joint can be eliminated, so that the water flow transported upward has better cleaning ability.

[0031] The water pipe body 1 also includes a transverse portion 14 that bends forward from the upper end of the second section 12 and extends to the central portion of the top of the washing chamber of the washing machine, and the end of the transverse portion 14 forms a second water outlet 141. The second water outlet 141 can be connected to a top spray arm that sprays downward from the top of the washing chamber to rinse the back of the tableware in the upper bowl basket to improve the cleaning effect.

[0032] The cleaning machine of this embodiment includes a box body, a water pump, a lower spray arm, and an upper spray arm. A concave return water area is provided at the bottom of the box body. The water pump is arranged in the return water area and has a water inlet, a first output port, and a second output port connected to the return water area. The lower spray arm is arranged in the box body and is arranged near the top of the return water area and is connected to the first output port. It also includes the above-mentioned inner water pipe, and the second output port of the water pump is connected to the lower end of the inner water pipe.

[0033] In this embodiment, a first water outlet 131 is formed on the front side wall of the bending section 13, and the inner side wall of the connection between the bending section 13 and the lower end of the second section 12 is arranged close to the edge of the first water outlet 131. Since the edge of the first water outlet 131 basically corresponds to the side wall of the inner water pipe, the water flow transported from bottom to top is output through the first water outlet 131 as soon as it reaches the connection between the bending section 13 and the second section 12, thereby avoiding the buffering of the water flow here and generating a vortex, which is beneficial to improving the water flow transportation efficiency and lift, and further improving the cleaning effect.

[0034] 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 inner water pipe for a cleaning machine, comprising a water pipe body (1) extending from bottom to top, characterized in that: The water pipe body (1) comprises a first section (11) located at the bottom and extending vertically, a second section (12) located at the top and extending vertically, and a bending section (13) connected between the first section (11) and the second section (12); the lower end of the bending section (13) is connected to the upper end of the first section (11), the upper end of the bending section (13) is connected to the lower end of the second section (12); a first water outlet (131) is provided on the front side wall of the bending section (13); and the inner side wall of the connection between the bending section (13) and the lower end of the second section (12) is arranged close to the edge of the first water outlet (131).

2. The inner water pipe for a cleaning machine according to claim 1, characterized in that: The transverse width of the first section (11) is greater than the transverse width of the second section (12), and the width of the bent section (13) gradually decreases from bottom to top.

3. The inner water pipe for a cleaning machine according to claim 2, characterized in that: The projection of the bending section (13) in the axial direction of the first water outlet (131) comprises a first arc section (1301) located on the outside and a second arc section (1302) located on the inside, the length of the first arc section (1301) being greater than the length of the second arc section (1302), and a diversion channel (132) that arches obliquely upward is enclosed between the first arc section (1301).

4. The inner water pipe for a cleaning machine according to claim 3, characterized in that: The radius of the circle corresponding to the first arc segment (1301) is 6.7 to 7.9 times the radius of the first water outlet (131).

5. The inner water pipe for a cleaning machine according to claim 3, characterized in that: The radius of the circle corresponding to the second arc segment (1302) is 2.5 to 3.5 times the radius of the first water outlet (131).

6. The inner water pipe for a cleaning machine according to claim 3, characterized in that: The first arc segment (1301) is connected to the corresponding side wall of the second segment (12) above it through a third arc segment (1303), and the second arc segment (1302) is connected to the corresponding side wall of the second segment (12) above it through a fourth arc segment (1304).

7. The inner water pipe for a cleaning machine according to claim 6, characterized in that: The radius of the circle corresponding to the third arc segment (1303) is smaller than the radius of the circle corresponding to the fourth arc segment (1304), and there is a distance (d) between the axial projection of the first water outlet (131) and the third arc segment (1303).

8. The inner water pipe for a cleaning machine according to claim 6, characterized in that: The radius of the circle corresponding to the fourth arc segment (1304) is equal to the radius of the first water outlet (131), and the projection of the first water outlet (131) in its axial direction is arranged close to the fourth arc segment (1304).

9. The inner water pipe for a cleaning machine according to claim 8, characterized in that: A partial projection of the first water outlet (131) in its axial direction coincides with the fourth circular arc segment (1304).

10. The inner water pipe for a cleaning machine according to claim 6, characterized in that: The third circular arc segment (1303) is located above the fourth circular arc segment (1304), and the upper end of the fourth circular arc segment (1304) is arranged corresponding to the lower end of the third circular arc segment (1303).

11. The inner water pipe for a cleaning machine according to claim 10, characterized in that: The front-to-back width of the bending section (13) is greater than the front-to-back width of the second section (12), and the rear side wall of the water pipe body (1) forms a diversion slope (1305) that tilts forward from bottom to top at a position corresponding to the third arc section (1303).

12. The inner water pipe for a cleaning machine according to any one of claims 1 to 11, characterized in that: The water pipe body (1) further comprises a transverse portion (14) bent forward from the upper end of the second section (12) and extending to the central portion of the top of the cleaning chamber of the cleaning machine, wherein the end of the transverse portion (14) forms a second water outlet (141).

13. A cleaning machine comprising a housing, a water pump, a lower spray arm, and an upper spray arm, wherein a concave water return area is provided at the bottom of the housing, the water pump is disposed in the water return area and has a water inlet, a first outlet, and a second outlet connected to the water return area, the lower spray arm being disposed in the housing and near the top of the water return area and connected to the first outlet, characterized in that: It also includes the inner water pipe according to any one of claims 1 to 12, and the second output port of the water pump is connected to the lower end of the inner water pipe.

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