Inner water pipe structure for cleaning machine and cleaning machine

Abstract

The utility model discloses an inner water pipe structure for a cleaning machine, which comprises an inner water pipe, an air inlet is arranged on the side wall of the inner water pipe, and the inner water pipe structure is characterized in that a valve plate is rotatably connected in the inner water pipe, so that the inner water pipe structure has at least two states, the valve plate is overturned upwards under the action of water flow so as to cover the air inlet; and in the second state, the valve plate falls under the action of gravity so as to release the coverage of the air inlet. The utility model further discloses a cleaning machine applying the inner water pipe structure. Compared with the prior art, the structure is simple, and an additional control system for controlling opening and closing of the air inlet to be matched with the cleaning process is not needed.

Description

Technical Field

[0001] This utility model relates to the field of kitchen equipment technology, specifically to an internal water pipe structure for a cleaning machine and the cleaning machine itself. Background Technology

[0002] For countertop and cabinet dishwashers, due to their large washing space, they are generally designed with three spray arms: top, middle, and bottom, in order to achieve better washing results. The middle and top spray arms are supplied with water through an inner water pipe that extends upward close to the inner wall of the washing chamber.

[0003] After washing, dishwashers often require dish drying to prevent bacterial growth. If residual water inside the cavity and components is not effectively removed, unpleasant odors will develop over time, affecting the customer experience. For example, Chinese patent application CN 201811068318.8, entitled "A Dishwasher," connects the drying device directly to the internal water pipe of the water circulation system. By using a blower or exhaust fan, it can achieve complete ventilation or exhaust within the water circulation system, more directly and effectively removing residual water and eliminating odors.

[0004] However, the above solution, which uses a one-way solenoid valve to open and close the air inlet of the inner water pipe, is structurally complex and requires an additional control system to coordinate the opening and closing of the air inlet with the cleaning process. Utility Model Content

[0005] The first technical problem to be solved by this utility model is to provide an internal water pipe structure for a cleaning machine that is simple in structure and does not require an additional control system to control the opening and closing of the air inlet in coordination with the cleaning process, in light of the current state of the technology.

[0006] The second technical problem to be solved by this utility model is to provide a cleaning machine with the above-mentioned internal water pipe structure.

[0007] The technical solution adopted by this utility model to solve the first technical problem mentioned above is as follows: an inner water pipe structure for a cleaning machine, comprising an inner water pipe, wherein an air inlet is provided on the side wall of the inner water pipe, characterized in that: a valve plate is rotatably connected inside the inner water pipe, so that the inner water pipe structure has at least two states:

[0008] In the first state, the valve plate flips upward under the action of water flow to cover the air inlet;

[0009] In the second state, the valve plate falls under the influence of gravity to remove the cover from the air inlet.

[0010] To facilitate the installation of the valve plate, the inner water pipe has a vertical section extending from bottom to top along the direction of water flow, the air inlet is located on the side wall of the vertical section, and the valve plate is located inside the vertical section.

[0011] To reduce the impact of the valve plate on hydraulic performance and reduce pipe loss, the rear side wall inside the vertical section of the inner water pipe has an outwardly recessed portion. The air inlet is located on the rear side wall of the recessed portion. The connecting end of the valve plate is hinged to the side wall inside the recessed portion. In the first state, the valve plate is hidden inside the recessed portion.

[0012] To further reduce the impact of the valve plate on hydraulic performance and reduce pipe loss, in the first state, the bottom surface of the valve plate is flush with the rear side of the vertical section of the inner water pipe.

[0013] In order to achieve the hinge of the valve plate inside the recess, the left and right sides of the valve plate connection end have a pivot extending in the left and right direction, which is rotatably mounted on the side wall inside the recess.

[0014] To facilitate the installation and rotation of the shaft, the edge of the shaft end is chamfered.

[0015] In order to limit the extreme position of the valve plate flipping up, the top wall inside the recess has a first limiting boss. In the first state, the first limiting boss is limited to the free end of the valve plate and prevents the valve plate from continuing to flip up.

[0016] In order to limit the first limiting boss to the free end of the valve plate and improve the stability of this state by means of the friction between the two, the end face of the free end of the valve plate is an outwardly convex arc shape, and the end of the first limiting boss facing the valve plate has a first groove. The inner wall of the first groove is an inwardly concave arc shape. In the first state, the free end of the valve plate is inserted into the first groove and the opposite surfaces of the two are in contact with each other.

[0017] In order to provide guidance and increase the friction between the valve plate and the first limiting boss, a vertically penetrating groove is provided on the end face of the free end of the valve plate, and a first interlocking protrusion corresponding to the interlocking groove is provided on the inner wall of the first groove. In the first state, the first interlocking protrusion is inserted into the corresponding interlocking groove.

[0018] In order to limit the extreme position of the valve plate's descent, a second limiting protrusion is provided on the front side wall inside the vertical section of the inner water pipe. In the second state, the second limiting protrusion is positioned at the free end of the valve plate to prevent the valve plate from falling further.

[0019] In order to limit the second limiting boss to the free end of the valve plate and improve the stability of this state by means of the friction between the two, the end face of the free end of the valve plate is convex arc shape, and the end of the second limiting boss facing the valve plate has a second groove. The inner wall of the second groove is concave arc shape. In the second state, the free end of the valve plate is inserted into the second groove and the opposite surfaces of the two are in contact with each other.

[0020] In order to provide guidance and increase the friction between the valve plate and the second limiting boss, a vertically penetrating groove is provided on the end face of the free end of the valve plate, and a second interlocking protrusion corresponding to the interlocking groove is provided on the inner wall of the second groove. In the second state, the second interlocking protrusion is inserted into the corresponding interlocking groove.

[0021] To further ensure that the second limiting boss is located at the free end of the valve plate, a limiting groove is provided at the bottom of the free end of the valve plate, and a limiting protrusion corresponding to the limiting groove is provided on the inner wall of the second groove. In the second state, the limiting protrusion is inserted into the corresponding limiting groove.

[0022] The technical solution adopted by this utility model to solve the second technical problem mentioned above is: a cleaning machine, characterized in that: it applies the above-mentioned internal water pipe structure.

[0023] Compared with the prior art, the advantages of this utility model are as follows: a simple valve plate is used to control the opening and closing of the air inlet. In this way, during cleaning, the valve plate flips upward under the action of water flow to cover the air inlet, preventing the air inlet from depressurizing during the cleaning process and affecting the cleaning result. During drying, the valve plate falls under the action of gravity to remove the cover of the air inlet, realizing the flow of gas and heat exchange inside the inner water pipe during the drying process. The structure is simple and there is no need to set up an additional control system to control the opening and closing of the air inlet in coordination with the cleaning process. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the inner water pipe structure in the first state in an embodiment of the cleaning machine of this utility model;

[0025] Figure 2 for Figure 1 A longitudinal sectional view;

[0026] Figure 3 for Figure 1 Longitudinal sectional view of the internal water pipe structure after switching to the second state;

[0027] Figure 4 This is a three-dimensional structural diagram of the valve plate in an embodiment of the cleaning machine of this utility model. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0030] like Figures 1 to 4 The image shows a preferred embodiment of the cleaning machine with an internal water pipe structure according to this utility model. The internal water pipe structure includes an internal water pipe 1 and a valve plate 2, and the cleaning machine is equipped with a drying mechanism.

[0031] The inner water pipe 1 is generally E-shaped, including a main pipe 101 and a first branch pipe 102 and a second branch pipe 103 branching from the outlet end of the main pipe 101. Specifically, the main pipe 101 includes a horizontal section extending from front to back along the water flow direction and a vertical section extending upward from the rear end of the horizontal section. The inlet end of the main pipe 101 is used to connect to the water pump of the cleaning machine. The first branch pipe 102 is connected to the side of the top of the main pipe 101 and extends from back to front. The outlet end of the first branch pipe 102 is used to connect to the middle spray arm of the cleaning machine. The second branch pipe 103 is connected to the top of the top of the main pipe 101 and includes a vertical section extending from bottom to top along the water flow direction and a horizontal section extending forward from the top of the vertical section. The outlet end of the second branch pipe 103 is used to connect to the top spray arm of the cleaning machine. This is the conventional structure of the cleaning machine and will not be described in detail here.

[0032] In this embodiment, the rear sidewall inside the vertical section of the main pipeline 101 has an outwardly recessed portion 11, and the rear sidewall of the recessed portion 11 has a plurality of air inlets 12 arranged at intervals in the left and right direction; the top wall inside the recessed portion 11 has a first limiting boss 13; the front sidewall inside the vertical section of the main pipeline 101 has a second limiting boss 14.

[0033] Specifically, the bottom end of the first limiting boss 13 has a first groove 131, the inner wall of which is a concave arc shape; a plurality of first interlocking protrusions 132 are provided on the inner wall of the first groove 131, which are arranged at intervals in the left and right direction and correspond one-to-one with the interlocking grooves 22 described below.

[0034] The rear end of the second limiting boss 14 has a second groove 141, the inner wall of which is a concave arc shape; a plurality of second interlocking protrusions 142 are provided on the inner wall of the second groove 141, which are arranged at intervals in the left and right direction and correspond one-to-one with the interlocking grooves 22 described below; a plurality of limiting protrusions 143 are provided on the lower part of the inner wall of the second groove 141, which are arranged at intervals in the left and right direction.

[0035] Valve plate 2 is rotatably connected to the vertical section of main pipeline 101.

[0036] Specifically, the valve plate 2 has a rotating shaft 21 extending in the left and right directions on both sides of the connecting end. The rotating shaft 21 is rotatably mounted on the side wall inside the recess 11, thereby realizing the hinge of the valve plate 2 inside the recess 11. In this embodiment, the edge of the end of the rotating shaft 21 has a chamfer to facilitate the installation and rotation of the rotating shaft 21.

[0037] The end face of the free end of the valve plate 2 is an outwardly convex arc shape; multiple interlocking grooves 22 are opened through the end face of the free end of the valve plate 2 in the vertical direction and are spaced apart in the left and right direction; multiple limiting grooves 23 are opened at the bottom of the free end of the valve plate 2 in the left and right direction and correspond one-to-one with the aforementioned limiting protrusions 143.

[0038] The valve plate 2 described above can flip upwards under the action of water flow and fall downwards under the action of gravity, so that the inner water pipe structure has at least two states:

[0039] In the first state, such as Figure 2 As shown, the valve plate 2 flips upward under the action of water flow to cover the air inlet 12, thereby allowing the water flow in the main pipeline 101 to be supplied to the first branch pipeline 102 and the second branch pipeline 103 respectively. At this time, the valve plate 2 is hidden in the recess 11, and the bottom surface of the valve plate 2 is flush with the rear side of the vertical section of the main pipeline 101, reducing the impact of the valve plate 2 on the hydraulic performance and reducing pipe loss. At the same time, the free end of the valve plate 2 is inserted into the first groove 131 and the opposite surfaces of the two are in contact with each other. The first interlocking protrusion 132 is inserted into the corresponding interlocking groove 22, so that the first limiting protrusion 13 is limited to the free end of the valve plate 2 to prevent the valve plate 2 from continuing to flip and to improve the stability of this state by means of the friction between the two.

[0040] In the second state, such as Figure 3As shown, the valve plate 2 falls under the action of gravity to remove the cover on the air inlet 12, thereby allowing the hot air in the inner cavity of the cleaning machine to enter the inner water pipe 1 through the air inlet 12. At this time, the free end of the valve plate 2 is inserted into the second groove 141 and the opposite surfaces of the two are in contact with each other. The second interlocking protrusion 142 is inserted into the corresponding interlocking groove 22 so that the second limiting protrusion 14 is limited to the free end of the valve plate 2 and prevents the valve plate 2 from falling further. At the same time, the limiting protrusion 143 is inserted into the corresponding limiting groove 23 to further ensure that the second limiting protrusion 14 is limited to the free end of the valve plate 2 and prevents the valve plate 2 from falling further.

[0041] The working principle of this embodiment is as follows:

[0042] (1) During cleaning, the water pump of the cleaning machine pumps water into the inner water pipe 1. The upward force of the water flow will push the valve plate 2 up, causing the valve plate 2 to flip upward until it covers the air inlet 12. At this time, if Figure 2 As shown, the internal water pipe structure is in the first state, and the water flow in the main pipe 101 is supplied to the first branch pipe 102 and the second branch pipe 103 respectively. Since the valve plate 2 covers the air inlet 12, the air inlet 12 is closed to prevent the air inlet 12 from depressurizing during the cleaning process and affecting the cleaning result.

[0043] (2) During the drying process after cleaning, the valve plate 2 loses the support of the water flow and falls under the action of gravity until the limiting protrusion 143 is inserted into the limiting groove 23. At this time, if Figure 3 As shown, the inner water pipe structure is in the second state, and the valve plate 2 removes the cover of the air inlet 12 to open the air inlet 12, thereby realizing the flow and heat exchange of gas inside the inner water pipe 1 during the drying process, effectively removing the residual water inside the inner water pipe 1 and improving the user experience.

[0044] The advantages of the above scheme are:

[0045] (1) The opening and closing of the air inlet 12 is controlled by a simple valve plate 2, which has low cost and high process feasibility.

[0046] (2) It provides a channel for gas exchange between the inside and outside of the inner water pipe 1, which improves drying efficiency, reduces residual water inside the parts, and improves user experience;

[0047] (3) The scheme has little impact on hydraulic performance, does not affect the cleaning effect and does not increase energy consumption.

Claims

1. An internal water pipe structure for a cleaning machine, comprising an internal water pipe (1) having an air inlet (12) on its side wall, characterized in that: A valve plate (2) is rotatably connected inside the inner water pipe (1) so that the inner water pipe structure has at least two states: In the first state, the valve plate (2) flips upward under the action of water flow to cover the air inlet (12); In the second state, the valve plate (2) falls under the action of gravity to remove the cover on the air inlet (12).

2. The internal water pipe structure according to claim 1, characterized in that: The inner water pipe (1) has a vertical section extending from bottom to top along the flow direction of the water flow, the air inlet (12) is located on the side wall of the vertical section, and the valve plate (2) is located inside the vertical section.

3. The internal water pipe structure according to claim 2, characterized in that: The vertical section of the inner water pipe (1) has an outwardly recessed portion (11) on its rear side wall. The air inlet (12) is located on the rear side wall of the recessed portion (11). The connecting end of the valve plate (2) is hinged to the side wall inside the recessed portion (11). In the first state, the valve plate (2) is hidden inside the recessed portion (11).

4. The internal water pipe structure according to claim 3, characterized in that: In the first state, the bottom surface of the valve plate (2) is flush with the rear side of the vertical section of the inner water pipe (1).

5. The internal water pipe structure according to claim 3, characterized in that: The valve plate (2) has a rotating shaft (21) extending in the left and right directions on both sides of the connecting end. The rotating shaft (21) is rotatably mounted on the side wall inside the recess (11).

6. The internal water pipe structure according to claim 5, characterized in that: The edge of the end of the shaft (21) has a chamfer.

7. The internal water pipe structure according to any one of claims 3 to 6, characterized in that: The top wall inside the recess (11) has a first limiting boss (13). In the first state, the first limiting boss (13) is located at the free end of the valve plate (2) and prevents the valve plate (2) from continuing to rotate.

8. The internal water pipe structure according to claim 7, characterized in that: The end face of the free end of the valve plate (2) is an outwardly convex arc shape. The end of the first limiting boss (13) facing the valve plate (2) has a first groove (131). The inner wall of the first groove (131) is an inwardly concave arc shape. In the first state, the free end of the valve plate (2) is inserted into the first groove (131) and the opposite surfaces of the two are in contact with each other.

9. The internal water pipe structure according to claim 8, characterized in that: The valve plate (2) has a vertically penetrating groove (22) on the free end face. The inner wall of the first groove (131) is provided with a first interlocking protrusion (132) corresponding to the interlocking groove (22). In the first state, the first interlocking protrusion (132) is inserted into the corresponding interlocking groove (22).

10. The internal water pipe structure according to any one of claims 3 to 6, characterized in that: The front side wall inside the vertical section of the inner water pipe (1) has a second limiting boss (14). In the second state, the second limiting boss (14) is located at the free end of the valve plate (2) and prevents the valve plate (2) from falling further.

11. The internal water pipe structure according to claim 10, characterized in that: The end face of the free end of the valve plate (2) is an outwardly convex arc shape. The end of the second limiting boss (14) facing the valve plate (2) has a second groove (141). The inner wall of the second groove (141) is an inwardly concave arc shape. In the second state, the free end of the valve plate (2) is inserted into the second groove (141) and the opposite surfaces of the two are in contact with each other.

12. The internal water pipe structure according to claim 11, characterized in that: The valve plate (2) has a vertically penetrating groove (22) on the free end face. The inner wall of the second groove (141) is provided with a second interlocking protrusion (142) corresponding to the interlocking groove (22). In the second state, the second interlocking protrusion (142) is inserted into the corresponding interlocking groove (22).

13. The internal water pipe structure according to claim 11, characterized in that: A limiting groove (23) is provided at the bottom of the free end of the valve plate (2). A limiting protrusion (143) corresponding to the limiting groove (23) is provided on the inner wall of the second groove (141). In the second state, the limiting protrusion (143) is inserted into the corresponding limiting groove (23).

14. A cleaning machine, characterized in that: The application has the internal water pipe structure as described in any one of claims 1 to 13.

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