Cleaning machine

Abstract

The utility model relates to a cleaning machine which comprises a box body, a main spraying arm and an auxiliary spraying arm, the auxiliary spraying arm is arranged on the main spraying arm in a rotating mode, water spraying holes are formed in the main spraying arm, and the top of the main spraying arm is provided with a gas collecting cavity which can surround the water spraying holes so as to supply gas to the water spraying holes to form a spraying water column with bubbles. A water pump used for drawing water for the main spraying arm and providing power is arranged at the bottom of the box body, an output shaft of a driving part of the water pump extends upwards into the air collecting cavity, and the output shaft of the driving part is further connected with the auxiliary spraying arm through a transmission assembly arranged in the air collecting cavity and used for driving the auxiliary spraying arm to rotate at a constant speed. The driving part of the water pump of the cleaning machine is used as power, and the auxiliary spraying arm is connected with the output shaft of the driving part through the transmission assembly, so that the auxiliary spraying arm is controlled to rotate at a constant speed in the rotating process of the output shaft of the driving part, the clamping stagnation problem is avoided, cleaning dead angles are better eliminated, 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] Dishwashers are generally provided with spray arms for rinsing dishes or fruits and vegetables by spraying water jets.

[0003] In order to eliminate cleaning dead angles and expand the cleaning effect, the applicant's prior application CN202211611048.7 "A cleaning machine" discloses a structure, which includes a box and a spray arm. The spray arm is rotatably arranged in the box, and the spray arm is provided with a hollow flow channel. The spray arm is also provided with a water outlet connected to the flow channel, and the water outlet is connected to a nozzle that can rotate relative to the spray arm. The above-mentioned spray arm also forms a cavitation water column through an aeration structure. At the moment when the cavitation water column contacts the pollutant, the bubbles entrained in the water flow burst, which can increase the stripping force of the pollutants on the surface of the object to be cleaned, and further improve the cleaning effect.

[0004] The above solution, on the one hand, eliminates the cleaning dead corners at the corners of the washing chamber through the nozzle, and on the other hand, improves the stripping force of pollutants by forming a water column with bubbles. However, due to the relatively unstable flow pattern of the water flow at the end of the spray arm, it is easy to cause the nozzle to rotate unstably or even get stuck, affecting the cleaning effect. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a cleaning machine which can make the auxiliary spray arm rotate stably so as to improve the cleaning effect in view of the current status of the prior art.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] A cleaning machine comprises a housing, a main spray arm and an auxiliary spray arm, wherein the main spray arm is rotatably arranged in the housing, the main spray arm is provided with a hollow flow channel, the auxiliary spray arm is rotatably arranged on the main spray arm and is connected with the flow channel, the main spray arm is provided with a water spray hole connected with the flow channel, the top of the main spray arm is provided with an air collecting chamber which can surround the water spray hole so as to supply gas to the water spray hole to form a spray water column with bubbles, the bottom of the housing is provided with a water pump for drawing water and providing power for the main spray arm, the output shaft of the driving member of the water pump extends upward into the air collecting chamber, the output shaft of the driving member is also connected with the auxiliary spray arm through a transmission assembly provided in the air collecting chamber, and is used to drive the auxiliary spray arm to rotate at a constant speed.

[0008] The utility model utilizes the driving part of the water pump of the cleaning machine as the power, and connects the auxiliary spray arm with the output shaft of the driving part through a transmission component, so that the auxiliary spray arm is controlled to rotate at a constant speed during the rotation of the output shaft of the driving part, thereby avoiding the occurrence of the jamming problem, thereby better eliminating the cleaning dead angle and improving the cleaning effect.

[0009] Preferably, a top plate arranged at intervals is provided on the top of the main spray arm, and the top plate and the top wall of the main spray arm enclose the gas collecting chamber, and jet holes arranged corresponding to the water spray holes are opened on the top plate, and a gap is formed between the jet hole and the water spray hole for air to be sucked into the jet water column in the jet state. According to the Venturi effect, when the water column passes through the water spray hole and the jet hole, negative pressure is generated in the gap, so that the air around it is sucked into the water column, forming a cavitation water column with bubbles. When the cavitation water column hits the surface of the object to be cleaned, the bubbles burst at the moment, which can increase the stripping force on the pollutants and improve the cleaning effect.

[0010] Preferably, the top plate forms an installation cavity between the side corresponding to the auxiliary spray arm and the main spray arm, and a transmission assembly for decelerating and linking the output shaft of the driving member with the auxiliary spray arm is arranged in the installation cavity. The above structure is adopted to control the rotation speed of the auxiliary spray arm and make it rotate stably.

[0011] Preferably, the upper end of the output shaft of the driving member is located in the air collecting chamber and is connected to a first gear, and the first gear is respectively connected to the transmission assembly and the impeller. This structure facilitates the linkage between the output shaft of the driving member and the impeller and the auxiliary spray arm.

[0012] Preferably, the top wall of the main spray arm is provided with a water outlet connected to the flow channel, the bottom of the auxiliary spray arm is provided with a water inlet sleeve, the lower end of the water inlet sleeve is rotationally constrained at the water outlet, and the outer peripheral wall of the water inlet sleeve is connected to the output shaft of the driving member through a transmission assembly. The above structure is adopted to facilitate the linkage between the auxiliary spray arm and the output shaft of the driving member.

[0013] Preferably, the transmission assembly includes a second gear and a third gear, the diameter of the second gear is larger than the diameter of the first gear and meshes with the first gear for transmission, the diameter of the third gear is larger than the diameter of the second gear and meshes with the second gear for transmission, and a first gear ring is provided on the outer periphery of the water inlet jacket, and the first gear ring meshes with the third gear for transmission. The above structure is adopted to facilitate the linkage between the auxiliary spray arm and the output shaft of the driving member.

[0014] Preferably, a second gear ring is provided at the lower end of the central axis of the impeller, and the second gear ring is meshed with the first gear for transmission. The above structure facilitates the linkage between the impeller and the output shaft of the driving member.

[0015] In the utility model, the water pump includes a guide sleeve, an impeller assembly and a driving member. The bottom of the box body is provided with a concave water return area. The guide sleeve is provided in the water return area and the bottom is the water inlet end and the top is the water outlet end. The main spray arm can be rotatably supported on the guide seat and the bottom is connected with the water outlet end of the guide sleeve. The impeller assembly can be rotatably provided in the guide sleeve and the main spray arm to pump water in the water return area to the main spray arm. The driving member is provided on the outer bottom wall of the box body and the output shaft extends upward through the bottom wall of the box body and is connected to the impeller assembly. With the above structure, the driving member is operated to drive the impeller to rotate, and the water in the water return area can be pumped to the main spray arm to form a spray water column for cleaning.

[0016] Compared with the prior art, the advantages of the utility model are: the utility model utilizes the driving part of the cleaning machine water pump as the power, and connects the auxiliary spray arm with the output shaft of the driving part through the transmission assembly, so that the auxiliary spray arm is controlled to rotate at a constant speed during the rotation of the output shaft of the driving part, avoiding the occurrence of the jamming problem, thereby better eliminating the cleaning dead corners and improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a partial structural schematic diagram of a cleaning machine according to an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the spray arm of an embodiment of the utility model;

[0019] Figure 3 for Figure 1 A cross-sectional view of

[0020] Figure 4 It is a partial structural schematic diagram of the spray arm of the embodiment of the utility model;

[0021] Figure 5 for Figure 2 Another cross-sectional view of . DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] like Figures 1 to 5 As shown, the cleaning machine of this embodiment includes a housing 1, a main spray arm 2 and an auxiliary spray arm 3. The main spray arm 2 is rotatably disposed in the housing 1. The main spray arm 2 is provided with a hollow flow channel 21. The auxiliary spray arm 3 is rotatably disposed on the main spray arm 2 and is connected to the flow channel 21.

[0024] The main spray arm 2 is provided with a water spray hole 22 connected with the flow channel 21, and the top of the main spray arm 2 is provided with a gas collecting chamber 23 which can surround the water spray hole 22 so as to supply gas to the water spray hole 22 to form a water column with bubbles. The bottom of the box body 1 is provided with a water pump 4 for drawing water and providing power for the main spray arm 2, and the output shaft 411 of the driving member 41 of the water pump 4 extends upward into the gas collecting chamber 23, and the side of the gas collecting chamber 23 is provided with a drainage port 230, and the inner bottom wall of the gas collecting chamber 23 forms a guide slope 236 which gradually slopes downward from the inside to the outside near the drainage port 230.

[0025] The top of the main spray arm 2 is provided with a top plate 24 arranged at intervals, and a gas collecting chamber 23 is enclosed between the top plate 24 and the top wall of the main spray arm 2. The top plate 24 is provided with jet holes 241 arranged corresponding to the water spray holes 21, and a gap 10 is formed between the jet holes 241 and the water spray holes 22 for air to be sucked into the jet water column in the jet state. According to the Venturi effect, when the water column passes through the water spray hole and the jet hole, negative pressure is generated in the gap, so that the air around it is sucked into the water column, forming a cavitation water column with bubbles. When the cavitation water column hits the surface of the object to be cleaned, the bubbles burst at the moment, which can increase the stripping force on the pollutants and improve the cleaning effect.

[0026] The top plate 24 forms an installation cavity 231 between the side corresponding to the auxiliary spray arm 3 and the main spray arm 2, and the installation cavity 231 is provided with a transmission assembly 6 for reducing the speed of the output shaft 411 of the driving member 41 and the auxiliary spray arm 3. The above structure is adopted to control the rotation speed of the auxiliary spray arm 3 and make it rotate stably.

[0027] The upper end of the output shaft 411 of the driving member 41 is located in the gas collecting chamber 23 and is connected to a first gear 412, which is respectively connected to the transmission assembly 6 and the impeller 5. This structure facilitates the linkage between the output shaft of the driving member and the impeller and the auxiliary spray arm.

[0028] The top wall of the main spray arm 2 is provided with a water outlet 27 connected to the flow channel 21, and the bottom of the auxiliary spray arm 3 is provided with a water inlet sleeve 31, the lower end of the water inlet sleeve 31 is rotationally constrained at the water outlet 27 through a buckle structure, and the outer peripheral wall of the water inlet sleeve 31 is connected to the output shaft 411 of the driving member 41 through the transmission assembly 6. The above structure is adopted to facilitate the linkage between the auxiliary spray arm and the output shaft of the driving member.

[0029] The transmission assembly 6 includes a second gear 62 and a third gear 63. The diameter of the second gear 62 is larger than that of the first gear 412 and meshes with the first gear 412 for transmission. The diameter of the third gear 63 is larger than that of the second gear 62 and meshes with the second gear 62 for transmission. The outer periphery of the water inlet jacket 31 is provided with a first gear ring 311, which meshes with the third gear 63 for transmission. The above structure facilitates the linkage between the auxiliary spray arm and the output shaft of the driving member.

[0030] The lower end of the central axis of the impeller 5 is provided with a second gear ring 54, which is meshed with the first gear 412. The above structure facilitates the linkage between the impeller and the output shaft of the driving member.

[0031] In this embodiment, the water pump 4 includes a guide sleeve 42, an impeller assembly 43 and a driving member 41. A concave return water area 11 is provided at the bottom of the housing 1. The guide sleeve 42 is provided in the return water area 11 and the bottom is the water inlet end and the top is the water outlet end. The main spray arm 2 is rotatably supported on the guide seat 42 and the bottom is connected to the water outlet end of the guide sleeve 42. The impeller assembly 43 is rotatably provided in the guide sleeve 42 and the main spray arm 2 to pump the water in the return water area 11 to the main spray arm 2. The driving member 41 is provided on the outer bottom wall of the housing 1 and the output shaft 411 extends upward through the bottom wall of the housing 1 and is connected to the impeller assembly 43. With the above structure, the driving member 41 is operated to drive the impeller assembly 43 to rotate, so that the water in the return water area 11 can be pumped to the main spray arm 2 to form a spray water column for cleaning.

[0032] During the process of washing dishes, the driving member 41 of the washing machine water pump 4 is used as the power, and the auxiliary spray arm 3 is connected to the output shaft 411 of the driving member 41 through the transmission assembly 6, so that the auxiliary spray arm 3 is controlled to rotate at a constant speed during the rotation of the output shaft 411 of the driving member 41, thereby avoiding the occurrence of jamming problems, thereby better eliminating cleaning dead corners and improving the cleaning effect.

[0033] 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 cleaning machine, comprising a housing (1), a main spray arm (2) and an auxiliary spray arm (3), wherein the main spray arm (2) is rotatably arranged in the housing (1), the main spray arm (2) is provided with a hollow flow channel (21), the auxiliary spray arm (3) is rotatably arranged on the main spray arm (2) and is connected to the flow channel (21), the main spray arm (2) is provided with a water spray hole (22) connected to the flow channel (21), the top of the main spray arm (2) is provided with a gas collecting chamber (23) capable of surrounding the water spray hole so as to supply gas to the water spray hole to form a water column with bubbles, characterized in that: A water pump (4) for drawing water and providing power for the main spray arm (2) is arranged at the bottom of the box body (1); an output shaft (411) of a driving member (41) of the water pump (4) extends upward into the air collecting chamber (23); the output shaft (411) of the driving member (41) is connected to the auxiliary spray arm (3) via a transmission assembly (6) arranged in the air collecting chamber, and is used to drive the auxiliary spray arm (3) to rotate at a constant speed.

2. The cleaning machine according to claim 1, characterized in that: The top of the main spray arm (2) is provided with a top plate (24) arranged at intervals, the top plate (24) and the top wall of the main spray arm (2) enclose the air collecting chamber (23), the top plate (24) is provided with jet holes (241) arranged corresponding to the water spray holes, and a gap (10) is formed between the jet holes and the water spray holes for allowing air to be sucked into the jet water column in the jet state.

3. The cleaning machine according to claim 1, characterized in that: The upper end of the output shaft (411) of the driving member (41) is located in the air collecting chamber (23) and is connected to a first gear, and the first gear is respectively connected to the transmission assembly (6) and the impeller (5) in a transmission manner.

4. The cleaning machine according to claim 3, characterized in that: The top wall of the main spray arm (2) is provided with a water outlet connected to the flow channel (21); the bottom of the auxiliary spray arm (3) is provided with a water inlet sleeve, the lower end of which is rotationally constrained at the water outlet; the outer peripheral wall of the water inlet sleeve is connected to the output shaft (411) of the driving member (41) via a transmission assembly (6) in a speed reducing manner.

5. The cleaning machine according to claim 4, characterized in that: The transmission assembly (6) comprises a second gear and a third gear. The diameter of the second gear is greater than the diameter of the first gear and meshes with the first gear for transmission. The diameter of the third gear is greater than the diameter of the second gear and meshes with the second gear for transmission. A first gear ring is arranged on the outer periphery of the water inlet jacket and meshes with the third gear for transmission.

6. The cleaning machine according to claim 4, characterized in that: A second gear ring is arranged at the lower end of the central axis of the impeller (5), and the second gear ring is meshed with the first gear for transmission.

7. The cleaning machine according to any one of claims 1 to 6, characterized in that: The water pump (4) comprises a guide sleeve (42), an impeller assembly (43) and a driving member (41); a concave water return area is arranged at the bottom of the housing (1); the guide sleeve (42) is arranged in the water return area with the bottom as the water inlet end and the top as the water outlet end; the main spray arm (2) is rotatably supported on the guide seat and the bottom is connected to the water outlet end of the guide sleeve (42); the impeller assembly (43) is rotatably arranged in the guide sleeve (42) and the main spray arm (2) to pump the water (4) in the water return area to the main spray arm (2); the driving member (41) is arranged on the outer bottom wall of the housing (1) and the output shaft (411) passes through the bottom wall of the housing (1) and extends upward to be connected to the impeller assembly (43).

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