Waterway switching structure of cleaning machine

Abstract

A waterway switching structure of a cleaning machine comprises a groove body, an inner water pipe and an upper connecting pipe, the inner water pipe is arranged in the groove body, the upper connecting pipe is communicated with the water outlet end of the inner water pipe, and the waterway switching structure is characterized in that a pipe joint is arranged on the inner wall of the groove body and provided with a water inlet port and a water outlet port. The water inlet port is assembled and connected with the water outlet end of the inner water pipe, the upper connecting pipe is detachably connected with the water outlet port, and a water baffle capable of moving up and down is arranged at the position, close to the water outlet port, of the pipe joint; and when the upper connecting pipe is separated from the water outlet port, the water baffle falls down to seal the water outlet port. The whole structure is simple, electric logic cooperation is avoided, waterway switching is completed only through a pure mechanical linkage structure, cost is low, and stability and reliability are achieved.

Description

Technical Field

[0001] The present invention relates to a cleaning machine, which can be used for cleaning tableware and dishes. In particular, it relates to an improved structure for switching the internal water supply pipeline of a cleaning machine. Background Art

[0002] The existing sink-type cleaning machine (also known as a sink-type dishwasher) includes a tank body, an internal water pipe, an upper spray arm, a lower spray arm, an upper dish rack, a lower dish rack, and an upper connecting pipe disposed inside the tank body. The upper spray arm sprays water downward, the lower spray arm sprays water upward, the upper dish rack is rotatably disposed on the lower dish rack, and the upper connecting pipe is disposed on the upper dish rack and can rotate together with the upper dish rack. The internal water pipe supplies water to the upper spray arm of the upper dish rack.

[0003] When the upper dish rack is in the open and in-use state, the water in the internal water pipe passes through the upper connecting pipe to the upper spray arm to clean the tableware on the upper dish rack. When the user has only a small number of tableware to clean, there is no need to open the upper dish rack. At this time, the upper dish rack is retracted, but the water flow will still flow upward along the internal water pipe, and the water flow will flow out from the connection interface between the internal water pipe and the upper connecting pipe, resulting in the diversion of the water flow on the lower dish rack, the reduction of the water flow lift, the weakening of the water flow impact on the lower spray arm, and the reduction of the cleaning ability. Therefore, when only using the lower spray arm, it is necessary to block the water outlet of the internal water pipe. Currently, a water distribution valve is set on the pipeline, which is controlled through an automatic control program. There are high costs and complex program cooperation is required, so the failure rate is relatively high.

[0004] As an improvement, relevant technical solutions are disclosed in the prior art. See the Chinese patent application for invention "A Cleaning Machine and a Cleaning Method" (application publication number: CN117942008A) with the application number 202410227321.9. This document uses an adjustment mechanism to adjust the opening degree of the spray holes corresponding to the first water supply channel and the second water supply channel. When it is necessary to increase the water supply volume of the upper spray arm, the flow area of the first water supply channel can be adjusted to be larger.

[0005] Reference can also be made to the Chinese patent application for invention "A Cleaning Machine and a Cleaning Method" (application publication number: CN118058680A) with the application number 202410047041.X. This document discloses a control structure that can conduct the water distribution pipeline to supply water to the upper spray arm. After the upper dish basket and the upper spray arm are taken out of the washing cavity, the control structure cuts off the water distribution pipeline to prevent the water flow from rising, so that the water flow only sprays the lower dish basket through the lower spray arm, thereby enabling the selection of the spraying method according to the number of tableware to be cleaned, saving water while improving the cleaning degree. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a waterway switching structure for a cleaning machine that can automatically switch the waterway in view of the above technical status.

[0007] The technical solution adopted by the present invention to solve the above technical problems is as follows: A waterway switching structure of a cleaning machine, including a tank body, an inner water pipe and an upper connecting pipe. The aforementioned inner water pipe is arranged inside the tank body, and the aforementioned upper connecting pipe is communicated with the water outlet end of the inner water pipe. It is characterized in that a pipe joint is provided on the inner wall of the tank body. The pipe joint has a water inlet port and a water outlet port. The aforementioned water inlet port is assembled and connected with the water outlet end of the inner water pipe, and the aforementioned upper connecting pipe is detachably connected with the aforementioned water outlet port. A water blocking plate that can move up and down is provided near the water outlet port of the pipe joint; when the upper connecting pipe is separated from the water outlet port, the aforementioned water blocking plate drops to seal the water outlet port.

[0008] The cooperation structure between the water blocking plate and the water outlet port is preferably as follows: The aforementioned water outlet port is formed laterally on one side of the pipe joint, and a slot is provided on one side of the pipe joint. Correspondingly, the aforementioned water blocking plate is inserted into the slot from top to bottom.

[0009] Further, the upper end of the water blocking plate has a laterally protruding limiting portion. After the water blocking plate drops, the limiting portion is placed at the outer end of the slot to limit the further downward movement of the water blocking plate.

[0010] The lower end of the pipe joint near the water outlet port has a flared portion with a gradually expanding diameter from bottom to top. Guide grooves are formed on both sides of the flared portion. Correspondingly, guide strips are provided on both sides of the water inlet end of the upper connecting pipe and are in guiding cooperation with the guide grooves. The guide strips can move back and forth along the guide grooves, and the assembly and disassembly of the upper connecting pipe and the water outlet port can be quickly realized.

[0011] The water outlet end of the upper connecting pipe is connected to the water inlet end of the upper spray arm.

[0012] Further, a lower bowl rack and an upper bowl rack are provided inside the tank body. The aforementioned upper bowl rack is rotatably arranged on the lower bowl rack, and the aforementioned upper connecting pipe is arranged on the upper bowl rack and can be rotated together with the upper bowl rack.

[0013] Compared with the prior art, the advantages of the present invention are as follows: When the upper bowl rack needs to be used, the end of the upper connecting pipe pushes the water blocking plate to move upward, and the upper connecting pipe is communicated with the water outlet port of the inner water pipe. The water flows through the inner water pipe and the upper connecting pipe and finally flows into the upper spray arm to clean the upper bowl rack. When the upper bowl rack is not needed or the user does not open the upper bowl rack, at this time, the water blocking plate is not supported by the end of the upper connecting pipe, and it drops and is limited under the action of gravity. At this time, the water outlet port of the inner water pipe is sealed by the water blocking plate, and the water blocking plate prevents water leakage, thereby realizing the closure of the upper waterway. The overall structure is relatively simple, and there is no electric logic cooperation. Only a pure mechanical linkage structure is relied on to complete the waterway switching, which not only has a low cost but also is stable and reliable. Brief Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the upper bowl rack in the cleaning state in the embodiment.

[0015] Figure 2 Internal schematic diagram after removing the tank body in Figure 1

[0016] Figure 3 Internal schematic diagram after removing the upper bowl rack and lower bowl rack in Figure 2

[0017] Figure 4 Exploded enlarged view of Figure 3

[0018] Figure 5 Schematic diagram of the upper bowl rack in the unwashed state after flipping in the embodiment

[0019] Figure 6 Internal schematic diagram after removing the tank body in Figure 5

[0020] Figure 7 Internal schematic diagram after removing the upper bowl rack and lower bowl rack in Figure 6

[0021] Figure 8 Combined enlarged view of the pipe joint and the water baffle in Figure 7

[0022] Figure 9 Stereoscopic sectional view of Figure 8 Specific implementation mode

[0023] The present invention will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0024] As Figures 1 to 4 shown, the water path switching structure of the cleaning machine in this embodiment includes a tank body 1 and an inner water pipe 7, an upper spray arm 6, a lower spray arm 61, an upper bowl rack 3, a lower bowl rack 31 and an upper connecting pipe 4 arranged in the tank body 1. The upper spray arm 6 sprays water downward, the lower spray arm 61 sprays water upward, the upper bowl rack 3 is rotatably arranged on the lower bowl rack 31, specifically through the cooperation of rollers 32 on both sides and a slide rail 33, and the upper connecting pipe 4 is arranged on the upper bowl rack 3 and can rotate with the upper bowl rack 3.

[0025] A pipe joint 2 is arranged on the inner wall of the tank body 1. The pipe joint 2 has a water inlet port 25 and a water outlet port 22. The water inlet port 25 is assembled and connected to the water outlet end 71 of the inner water pipe 7, and the upper connecting pipe 4 is detachably connected to the water outlet port 22. In this way, the upper connecting pipe 4 and the water outlet end of the inner water pipe 7 are connected through the pipe joint 2, and the water outlet end of the upper connecting pipe 4 is connected to the water inlet end of the upper spray arm 6, so as to supply water to the upper spray arm 6.

[0026] ​​​​​​​The pipe joint 2 is provided with a water baffle 5 that can move up and down near the water outlet port 22; when the upper connecting pipe 4 is separated from the water outlet port 22, the water baffle 5 drops to seal the water outlet port 22.

[0027] The water outlet port 22 is formed laterally on one side of the pipe joint 2. One side of the pipe joint 2 has a slot 21. Correspondingly, the water baffle 5 is inserted into the slot 21 from top to bottom. The upper end of the water baffle 5 has a laterally protruding limit portion 51. After the water baffle 5 drops, the limit portion 51 is placed at the outer end of the slot 21 to further limit the downward movement of the water baffle 5.

[0028] The lower end of the pipe joint 2 near the water outlet port 22 has a flared portion 23 with a gradually expanding diameter from bottom to top. Guide grooves 24 are formed on both sides of the flared portion 23. Guide strips 41 that are in guiding cooperation with the guide grooves 24 are provided on both sides of the water inlet end of the upper connecting pipe 4.

[0029] Working principle: When the upper bowl rack needs to be used, the upper bowl rack will flip to the horizontal. As the upper bowl rack unfolds, the end of the upper connecting pipe connected to the upper spray arm will push the water baffle upward. Finally, as Figure 3 shown, at this time, the water outlet ports of the upper connecting pipe and the inner water pipe are connected. Water flows through the inner water pipe, the upper connecting pipe, and finally flows into the upper spray arm to clean the upper bowl rack. As Figure 5 and Figure 6 shown, when the upper bowl rack is not needed or the user does not open the upper bowl rack, at this time, the water baffle is not supported by the end of the upper connecting pipe and drops and is limited under the action of gravity. At this time, the water outlet port of the inner water pipe is sealed by the water baffle (as Figure 7 , Figure 8 and Figure 9 )). The water baffle prevents water leakage, thereby realizing the closure of the upper water circuit, reducing water flow loss, making the water flow head of the lower spray arm higher, the water flow impact greater, and improving the cleaning ability in this state. The overall structure is relatively simple, and there is no electric logic cooperation. Only a pure mechanical linkage structure is relied on to complete the water circuit switching, which not only has a low cost but also is stable and reliable.

Claims

1. A water circuit switching structure for a cleaning machine, comprising a tank body (1), an inner water pipe (7) and an upper connecting pipe (4), wherein the inner water pipe (7) is arranged in the tank body (1), and the upper connecting pipe (4) is connected to the water outlet end of the inner water pipe (7), characterized in that The inner wall of the tank body (1) is provided with a pipe joint (2), the pipe joint (2) having a water inlet port (25) and a water outlet port (22), the water inlet port (25) being assembled and connected with the water outlet end (71) of the inner water pipe (7), the upper connecting pipe (4) being detachably connected with the water outlet port (22), and the pipe joint (2) being provided with a water baffle (5) movable up and down near the water outlet port (22); when the upper connecting pipe (4) is detached from the water outlet port (22), the water baffle (5) falls down to seal the water outlet port (22).

2. The water channel switching structure of the cleaning machine according to claim 1, characterized in that The water outlet port (22) is formed laterally on one side of the pipe joint (2), and one side of the pipe joint (2) has a slot (21). Correspondingly, the water baffle (5) is inserted into the slot (21) from top to bottom.

3. The water channel switching structure of the cleaning machine according to claim 2, characterized in that The upper end of the water baffle (5) has a laterally extending limiting portion (51), and after the water baffle (5) falls, the limiting portion (51) is placed at the outer end of the slot (21) to limit the water baffle (5) from further moving downward.

4. The water channel switching structure of a cleaning machine according to claim 2, characterized in that The lower end of the pipe joint (2) is provided with a flared portion (23) whose diameter gradually increases from bottom to top near the water outlet port (22), and guide grooves (24) are formed on both sides of the flared portion (23). Correspondingly, the water inlet end of the upper connecting pipe (4) is provided with guide strips (41) on both sides thereof that cooperate with the guide grooves (24).

5. The water channel switching structure of a cleaning machine according to claim 1, characterized in that The water outlet end of the upper connecting pipe (4) is connected to the water inlet end of the upper spray arm (6).

6. The water channel switching structure of a cleaning machine according to claim 1, characterized in that The trough body (1) is provided with a lower bowl rack (31) and an upper bowl rack (3), wherein the upper bowl rack (3) is arranged on the lower bowl rack (31) in a flippable manner, and the upper connecting pipe (4) is arranged on the upper bowl rack (3) and can flip along with the upper bowl rack (3).

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