Cleaning machine spray structure

Abstract

A spray structure for a cleaning machine, characterized in that it includes a shell, a motor, a connecting pipe and a spray arm, wherein the motor is arranged at the outer end of the bottom of the shell, the output shaft of the motor extends upward from the bottom of the shell and the end is provided with an impeller capable of throwing water into the connecting pipe; one end of the connecting pipe is rotatably arranged at the bottom of the shell and covers the impeller, and the other end is rotatably connected to the spray arm, the connecting pipe is provided with a first pressure relief hole, and the spray arm is provided with a second pressure relief hole and a spray hole. The spray arm can radiate a large space, and can basically achieve 360° spraying without dead angles. While reducing water consumption, the water flow force of the spray can be increased, and the overall cost is also low.

Description

Technical Field

[0001] The invention relates to a cleaning device, in particular to a cleaning machine capable of cleaning tableware, fruits and vegetables. Background Art

[0002] With the development of society and the advancement of science and technology, people's requirements for life are getting higher and higher. More and more families are starting to install and use washing machines (or dishwashers). Washing machines can be used to wash tableware, fruits and vegetables, as well as pots and knives, which not only brings convenience to people, but also saves people's time.

[0003] The basic structure of an existing cleaning machine includes a tank body (or cabinet body), a motor and a spray arm. The motor is arranged at the bottom of the tank body and an impeller is arranged on the output shaft. The spray arm is rotatably arranged in the tank body. There are spray holes and pressure relief holes on the spray arm. The motor drives the impeller to rotate to draw water in the tank body into the spray arm. A small part of the water is ejected from the pressure relief hole, and most of the water is sprayed from the spray hole. Since the water flow ejected from the pressure relief hole generates a reverse force, the spray arm rotates and sprays at the same time. Thus, the tableware, fruits and vegetables in the tank body are fully sprayed and rinsed. In the existing cleaning machine, the spray arm rotates and sprays around the axis of the motor output shaft. Considering that the spray area must be large enough, the spray arm is often made relatively long, but there are still dead corners that cannot be cleaned, which reduces the user experience.

[0004] For this purpose, an improved structure of multiple spray arms has appeared in the prior art, refer to the Chinese invention patent application with application number 201610562444.3 entitled "A dishwasher spray structure and a dishwasher" (application publication number CN107616771A); the document mentions that a spray rod is provided on the spray arm, and both the spray arm and the spray rod are provided with spray holes.

[0005] You can also refer to the Chinese invention patent application publication with application number 201710932525.2 "A sprayer for a dishwasher and a dishwasher" (application publication number CN 109620087 A). The document mentions a pair of auxiliary spray arms at both ends of the main spray arm, and water spray outlets are respectively provided on the main spray arm and the auxiliary spray arm.

[0006] Similarly, you can also refer to the Chinese invention patent application published with application number 202111370906.9 "Spray arm assembly and dishwasher" (application publication number CN113854923A).

[0007] However, the improved structure disclosed above has the following shortcomings: first, more spray arms are required, and the manufacturing cost is relatively high; second, the auxiliary spray arm blocks the main spray arm, affecting the cleaning effect; finally, if the spray speed reaches a certain level, the water consumption is relatively high. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a spray structure of a cleaning machine with a large spray area and low cost in view of the above technical status quo.

[0009] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a cleaning machine spray structure, characterized in that it includes a shell, a motor, a connecting pipe and a spray arm, the motor is arranged at the outer end of the bottom of the shell, the output shaft of the motor extends upward from the bottom of the shell and the end is provided with an impeller that can throw water into the connecting pipe; one end of the connecting pipe is rotatably arranged at the bottom of the shell and covers the impeller, and the other end is rotatably connected to the spray arm, the connecting pipe is provided with a first pressure relief hole, and the spray arm is provided with a second pressure relief hole and a spray hole.

[0010] Furthermore, the water inlet port of the spray arm is provided with a rotating seat, which is rotatably arranged on the water outlet of the connecting pipe and is limited by a first nut.

[0011] The upper end of the motor is provided with an upper cover, the bottom surface of which is in contact with the bottom of the housing, the upper cover is axially hollow and forms a water inlet laterally, the output shaft is provided with a guide wheel capable of guiding the lateral water flow upward, the guide wheel is located inside the upper cover and below the impeller, and the impeller is located on the water outlet of the upper cover. The guide wheel is used to quickly draw water flow from the bottom of the housing into the inner cavity of the upper cover.

[0012] Furthermore, a deflector cover is provided on the outer side of the upper cover, and a tongue piece is extended laterally from the deflector cover, and a water inlet gap communicating with the water inlet of the upper cover is formed between the tongue piece and the upper end surface of the bottom of the shell.

[0013] The water inlet of the upper cover is trumpet-shaped and is used for centralized water absorption, so that the water absorbed into the spray arm is stronger and more sufficient.

[0014] In order to make the structure compact and reasonable, the upper cover is provided with a plurality of clamping feet extending upward, and correspondingly, the air guide cover is provided with clamping holes for the clamping feet to fit into.

[0015] Furthermore, a connecting seat is provided at one end of the connecting pipe, and the connecting seat is sleeved on the outside of the upper cover and located inside the clamping foot. A second nut is provided outside the aforementioned connecting seat and is connected and assembled with the air deflector.

[0016] Compared with the prior art, the advantages of the present invention are: during the spraying process, the connecting pipe can rotate by utilizing the force of the water flow in combination with the first pressure relief hole, and the spray arm can also rotate relative to the connecting pipe by utilizing the force of the water flow in combination with the second pressure relief hole, so that the spray arm can rotate itself in addition to rotating around the axis of the motor output shaft, and the spray arm can radiate to a large space, basically achieving 360° no-dead-angle spraying. The connecting pipe is added on the original basis, and the volume of the spray arm can be appropriately reduced, which can reduce water consumption while increasing the water flow intensity of the spray, and the overall cost is also low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of an embodiment.

[0018] Figure 2 It is an enlarged schematic diagram after the shell is taken out in the embodiment.

[0019] Figure 3 for Figure 2 Exploded diagram of .

[0020] Figure 4 for Figure 2 An enlarged stereoscopic cross-sectional view of .

[0021] Figure 5 for Figure 3 Rear view of the center spray arm. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below with reference to the accompanying drawings.

[0023] like Figure 1 to Figure 4 As shown, the spray structure of the cleaning machine in this embodiment includes a shell 10, a motor 1, a connecting pipe 3 and a spray arm 4. The motor 1 is arranged at the outer end of the bottom of the shell 10. The shell 10 of this embodiment is in the form of a trough body, and of course a cabinet body can also be used, which will not be expanded here.

[0024] The output shaft 11 of the motor 1 extends upward from the bottom of the housing 10 and is provided with an impeller 13 at the end thereof, which can throw water into the connecting pipe; one end of the connecting pipe 3 is rotatably provided at the bottom of the housing 10 and covers the impeller 13, and the other end is rotatably connected to the spray arm 4, a first pressure relief hole 32 is provided on the connecting pipe 3, and a second pressure relief hole 42 and a spray hole 41 are provided on the spray arm 4.

[0025] The water inlet port of the spray arm 4 is provided with a rotating seat 6, which is rotatably arranged on the water outlet of the connecting pipe 3 and is limited by a first nut 51. Considering that the first nut 51 needs to be sleeved in advance, the rotating seat 6 in this embodiment is detachably arranged on the water inlet port of the spray arm 4. Specifically, a buckle structure can be adopted, and a clamping block 61 is convexly provided on the upper end of the rotating seat 6. Correspondingly, a clamping hole 43c (refer to Figure 5 As shown), after the clamping block 61 is inserted into the clamping hole 43 and then rotated, the rotating seat 6 and the connecting pipe 3 can be fixed as a whole.

[0026] An upper cover 14 is provided at the upper end of the motor 1, and the bottom surface of the upper cover 14 is in contact with the bottom of the housing 10. The upper cover 14 is hollow axially and has a water inlet 141 formed laterally. A guide wheel 12 capable of guiding the lateral water flow upward is provided on the output shaft 11. The guide wheel 12 can generate eddy currents. The guide wheel 12 is located inside the upper cover 14 and below the impeller 13. The impeller 13 is located on the water outlet 143 of the upper cover 14.

[0027] The water inlet 141 of the upper cover 14 is trumpet-shaped and is used for centralized water absorption, so that the water absorbed into the spray arm is stronger and more sufficient.

[0028] A deflector 2 is disposed outside the upper cover 14 , and a tongue 22 is extended laterally from the deflector 2 . A water inlet gap 1 a communicating with a water inlet 141 of the upper cover 14 is formed between the tongue 22 and the upper end surface of the bottom of the housing 10 .

[0029] The upper cover 14 has a plurality of clamping pins 142 extending upwardly, and correspondingly, the air guide cover 2 is formed with clamping holes 21 for the clamping pins 142 to fit into.

[0030] A connecting seat 31 is provided at one end of the connecting pipe 3 , and the connecting seat 31 and the connecting pipe 3 are also connected in a detachable manner. The specific connection structure can refer to the snap-fit ​​assembly method of the above-mentioned spray arm 4 and the rotating seat 6 .

[0031] The connecting seat 31 is sleeved on the outer side of the upper cover 14 and is located inside the clamping foot 142 . The second nut 52 is disposed outside the connecting seat 31 and is connected and assembled with the air deflector 2 .

[0032] During spraying, the motor starts running, and the guide wheel and impeller on the output shaft rotate at the same time. The guide wheel sucks the water at the bottom of the shell from the water inlet gap through the water inlet of the upper cover, and the water flow generates vortex. At the same time, the impeller throws the sucked water into the connecting pipe, and a small part of the water is ejected from the first pressure relief hole in the connecting pipe, acting in the reverse direction on the connecting pipe. The connecting pipe rotates, and most of the water enters the spray arm through the connecting pipe, and a small part of the water will be ejected from the second pressure relief hole of the spray arm, acting in the reverse direction on the spray arm, causing the spray arm to rotate relative to the connecting pipe, and most of the water is ejected from the spray hole of the spray arm to clean tableware, fruits and vegetables, pots and pans or knives.

[0033] The connecting pipe can rotate 360° around the axis of the motor output shaft, and the spray arm can rotate 360° relative to the water pipe to spray water, thereby achieving 360° cleaning without dead angles; the radiation area is larger, making the cleaning comprehensive, the structure is ingenious, flexible and reliable, improving the cleaning degree and enhancing the user experience. Compared with the spray arm in the prior art, the spray arm in this embodiment can be made smaller. Under the condition of the same water output, the water sprayed from the spray hole of the spray arm is stronger and faster, making the cleaning effect better.

Claims

1. A spray structure of a cleaning machine, characterized in that The invention comprises a housing (10), a motor (1), a connecting pipe (3) and a spray arm (4); the motor (1) is arranged at the outer end of the bottom of the housing (10); the output shaft (11) of the motor (1) extends upward from the bottom of the housing (10) and is provided with an impeller (13) at the end thereof which can throw water into the connecting pipe; one end of the connecting pipe (3) is rotatably arranged at the bottom of the housing (10) and covers the impeller (13); the other end is rotatably connected to the spray arm (4); the connecting pipe (3) is provided with a first pressure relief hole (32); and the spray arm (4) is provided with a second pressure relief hole (42) and a spray hole (41).

2. The spray structure of the cleaning machine according to claim 1, characterized in that The water inlet port of the spray arm (4) is provided with a rotating seat (6), and the rotating seat (6) is rotatably arranged on the water outlet of the connecting pipe (3) and is limited by a first nut (51).

3. The spray structure of the cleaning machine according to claim 1, characterized in that The motor (1) is provided with an upper cover (14) at the upper end, the bottom surface of the upper cover (14) is in contact with the bottom of the housing (10), the upper cover (14) is axially hollow and has a water inlet (141) formed laterally, the output shaft (11) is provided with a guide wheel (12) capable of guiding the lateral water flow upward, the guide wheel (12) is located inside the upper cover (14) and below the impeller (13), and the impeller (13) is located on the water outlet (143) of the upper cover (14).

4. The spray structure of the cleaning machine according to claim 3, characterized in that The water inlet (141) of the upper cover (14) is in a trumpet shape.

5. The spray structure of the cleaning machine according to claim 3, characterized in that A flow guide cover (2) is provided on the outside of the upper cover (14), and a tongue piece (22) is extended laterally from the flow guide cover (2). A water inlet gap (1a) communicating with a water inlet (141) of the upper cover (14) is formed between the tongue piece (22) and the upper end surface of the bottom of the shell (10).

6. The spray structure of the cleaning machine according to claim 5, characterized in that The upper cover (14) is provided with a plurality of clamping feet (142) extending upwards, and correspondingly, the air guide cover (2) is provided with clamping holes (21) adapted for the clamping feet (142).

7. The spray structure of the cleaning machine according to claim 6, characterized in that A connecting seat (31) is provided at one end of the connecting pipe (3). The connecting seat (31) is sleeved on the outside of the upper cover (14) and located inside the clamping foot (142). A second nut (52) is provided outside the connecting seat (31) and is connected and assembled with the air deflector (2).

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