Cleaning machine

Abstract

The utility model relates to a cleaning machine which comprises a box body, a main spraying arm, an auxiliary spraying arm and a water pumping mechanism, a driving piece of the water pumping mechanism is arranged at the bottom of the box body, an output shaft of the driving piece extends upwards, and a motor capable of driving the auxiliary spraying arm to rotate directionally and at a constant speed is further arranged at the bottom of the box body. The motor is located at the bottom of the driving piece, and a motor shaft penetrates through the output shaft and is connected with the auxiliary spraying arm through a transmission assembly. The spraying arm rotates to spray, namely the main spraying arm only provides a flow channel diversion effect, the motor capable of driving the auxiliary spraying arm to rotate directionally and at a constant speed is arranged at the bottom of the water pumping mechanism, and the motor shaft of the motor penetrates through the output shaft and is connected with the auxiliary spraying arm through the transmission assembly. Therefore, the auxiliary spraying arm can rotate in the specific rotating direction and at the specific rotating speed according to setting, rotation of the auxiliary spraying arm is controlled by the driving motor all the time and is not affected by changes of the washing environment, the rotating state is stable, cleaning dead corners can be eliminated, and the cleaning effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, and particularly refers to a cleaning machine for cleaning tableware and fruits and vegetables. Background Art

[0002] Generally, a spray arm for spraying water jets to wash tableware or fruits and vegetables is provided in a dishwasher.

[0003] In order to eliminate cleaning dead corners and expand the cleaning effect, a structure is disclosed in the applicant's prior application CN202211611048.7 "A Cleaning Machine", which includes a box body and a spray arm. The spray arm is rotatably arranged in the box body. The spray arm is provided with a hollow flow channel, and the spray arm is also provided with a water outlet communicating with the flow channel. A nozzle that can rotate relative to the spray arm is connected to the water outlet. The above spray arm also forms a cavitation water column through a gas injection structure. When the cavitation water column contacts pollutants, the bubbles entrained in the water flow burst, which can improve the peeling force of the pollutants on the surface of the object to be cleaned and further improve the cleaning effect.

[0004] On the one hand, the above solution eliminates the cleaning dead corners at the corners of the washing cavity through the nozzle, and on the other hand, it improves the peeling force on the pollutants by forming a water column with entrained bubbles. However, since the nozzle can only rotate unidirectionally relying on the water flow viscosity, and the water flow pattern at the end of the spray arm is relatively unstable, it is easy to cause unstable rotation of the nozzle or even jamming, affecting the cleaning effect. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a cleaning machine that can rotate the secondary spray arm forward or backward stably to improve the cleaning effect according to the current situation of the prior art.

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

[0007] A cleaning machine includes a box body, a main spray arm, a secondary spray arm and a water pumping mechanism. The main spray arm is rotatably arranged in the box body. The main spray arm is provided with a hollow flow channel. The secondary spray arm is rotatably arranged on the main spray arm and communicates with the flow channel. The water pumping mechanism is used to pump water at the bottom of the box body into the main spray arm. The driving part of the water pumping mechanism is arranged at the bottom of the box body and the output shaft extends upward. The inside of the output shaft of the driving part is hollow and extends to the top of the main spray arm. A motor that can drive the secondary spray arm to rotate in a fixed direction and at a fixed speed is also arranged at the bottom of the box body. The motor is located at the bottom of the driving part and the motor shaft passes through the output shaft and is connected to the secondary spray arm through a transmission component.

[0008] No water spraying holes are provided on the main spray arm of the present utility model, and all rely on the rotation of the spray arm for spraying, that is, the main spray arm only provides the function of guiding the flow path. A motor capable of driving the auxiliary spray arm to rotate directionally and at a constant speed is provided at the bottom of the water pump mechanism. The motor shaft of the motor passes through the output shaft and is connected to the auxiliary spray arm through a transmission component, so that the auxiliary spray arm can rotate in a specific rotation direction and at a specific rotation speed according to the setting. And because the rotation of the auxiliary spray arm is always controlled by the driving motor and will not be affected by changes in the washing environment, the rotation state is stable, which is beneficial to eliminating cleaning dead corners and improving the cleaning effect.

[0009] Preferably, the transmission component includes a gear, a first gear ring and a second gear ring. The gear is connected to the upper end of the motor shaft and rotates synchronously with the motor shaft. An inlet sleeve capable of being connected to the main spray arm is provided at the bottom of the auxiliary spray arm. The first gear ring is arranged around the inlet sleeve. The second gear ring is arranged around the periphery of the gear and the inlet sleeve and meshes with the gear and the first gear ring respectively for transmission. With the above structure, the stable linkage between the driving motor and the auxiliary spray arm is realized, and the motor shaft is hidden in the output shaft of the driving part, shortening the power connection line, and the connection is convenient and reliable.

[0010] Preferably, multiple groups of the auxiliary spray arms are arranged at intervals in the length direction of the main spray arm. First gear rings are arranged on the peripheries of the inlet sleeves of the auxiliary spray arms, and the auxiliary spray arms are linked through the first gear rings and the second gear rings. With the above structure, a larger spray coverage area is provided, and each auxiliary spray arm rotates under the cooperation and linkage of the gear rings, and the rotation speed and direction are stable and controllable, which is beneficial to eliminating cleaning dead corners and improving the cleaning effect.

[0011] Preferably, a receiving cavity arranged along the length direction is provided at the top of the main spray arm. The receiving cavity surrounds the inlet sleeves and gears of the auxiliary spray arms. The second gear ring is annular and is arranged along the edge of the receiving cavity in the receiving cavity. With the above structure, the transmission component is surrounded in the receiving cavity for protection to prevent the complex cleaning environment from having an adverse effect on it and maintaining the long-term and stable operation of the transmission component.

[0012] Preferably, a water outlet is provided on the top wall of the main spray arm. The lower end of the inlet sleeve of the auxiliary spray arm passes through the water outlet and is inserted into the flow path. A clamping foot capable of rotatably cooperating and limiting with the inner top wall of the main spray arm is provided at the lower end of the inlet sleeve. This structure facilitates the rotational restraint of each auxiliary spray arm on the main spray arm.

[0013] Preferably, the auxiliary spray arm includes a first auxiliary spray arm arranged near the end of the main spray arm and a second auxiliary spray arm arranged near the central part of the main spray arm. The first auxiliary spray arm is disc-shaped, and the second auxiliary spray arm is a long strip extending along the length direction. With the above structure, a larger spray range is provided to eliminate cleaning dead corners.

[0014] Preferably, there are two groups of the first auxiliary spray arms, which are respectively arranged at both ends of the main spray arm, and there are also two groups of the second auxiliary spray arms, which are arranged symmetrically with respect to the center of the main spray arm between the two first auxiliary spray arms. Preferably, the two groups of the second auxiliary spray arms are always vertically arranged. With the above structure, a larger spray range can be further provided to eliminate cleaning dead corners.

[0015] Preferably, an air adding structure is provided at the top of the first auxiliary spray arm, which can add air into the water column during the spraying process of the first auxiliary spray arm. The water pressure at the end of the spray arm is reduced. With the above structure, the stripping force of the water column sprayed at the end of the main spray arm on the pollutants can be improved to eliminate cleaning dead corners.

[0016] Preferably, the top wall of the first auxiliary spray arm is provided with water spraying holes, and the top of the first auxiliary spray arm is provided with spaced top plates. An air collecting cavity is enclosed between the top plates and the top wall of the first auxiliary spray arm. The top plates are provided with jet holes corresponding to the water spraying holes, and a gap is formed between the jet holes and the water spraying holes, which can suck air into the water column in a jet state. According to the Venturi effect, when the water column passes through the water spraying holes and the jet holes, negative pressure will be generated at the gap, so as to suck the surrounding air 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 instantaneous rupture of the bubbles can increase the stripping force on the pollutants and improve the cleaning effect.

[0017] Compared with the prior art, the advantages of the present utility model are as follows: no water spraying holes are provided on the main spray arm of the present utility model, and all rely on the rotation of the spray arm for spraying, that is, the main spray arm only provides the function of guiding the flow path. A motor capable of driving the auxiliary spray arm to rotate in a fixed direction and at a fixed speed is provided at the bottom of the water pumping mechanism. The motor shaft of the motor passes through the output shaft and is connected to the auxiliary spray arm through a transmission component, so that the auxiliary spray arm can rotate in a specific rotation direction and at a specific rotation speed according to the setting. Moreover, since the rotation of the auxiliary spray arm is always controlled by the driving motor and will not be affected by the change of the washing environment, the rotation state is stable, which is beneficial to eliminating cleaning dead corners and improving the cleaning effect. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0019] Figure 2 is Figure 1 a cross-sectional view of

[0020] Figure 3 is Figure 1 another cross-sectional view of

[0021] Figure 4 is a connection diagram of the auxiliary spray arm and the transmission mechanism in the embodiment of the present utility model;

[0022] Figure 5 For Figure 2 The enlarged view of part A in Specific embodiments

[0023] The following further describes the present utility model in detail with reference to the embodiments and the drawings.

[0024] As Figures 1 to 5 shown, the cleaning machine of this embodiment includes a box body 1, a main spray arm 2, a secondary spray arm, and a water pumping mechanism 3. The main spray arm 2 is rotatably arranged in the box body 1. The main spray arm 2 is provided with a hollow flow channel 21. The secondary spray arm is rotatably arranged on the main spray arm 2 and is communicated with the flow channel 21. The water pumping mechanism 3 is used to pump the water at the bottom of the box body 1 into the main spray arm 2. The driving member 31 of the water pumping mechanism 3 is arranged at the bottom of the box body 1 and the output shaft 311 extends upward. The inside of the output shaft of the driving member 31 is hollow and extends to the top of the main spray arm 2. A motor 4 capable of driving the secondary spray arm to rotate in a fixed direction and at a fixed speed is further arranged at the bottom of the box body 1. The motor 4 is located at the bottom of the driving member 31 and the motor shaft 41 passes through the output shaft and is connected to the secondary spray arm through a transmission assembly 5.

[0025] No water spraying holes are provided on the main spray arm 2 of this embodiment, and all rely on the rotation of the secondary spray arm for spraying. That is, the main spray arm 2 only provides the guiding function of the flow channel 21. A motor 4 capable of driving the secondary spray arm to rotate in a fixed direction and at a fixed speed is arranged at the bottom of the water pumping mechanism 3. The motor shaft 41 of the motor 4 passes through the output shaft 311 and is connected to the secondary spray arm through a transmission assembly 5, so that the secondary spray arm can rotate in a specific rotation direction and at a specific rotation speed according to the setting. And because the rotation of the secondary spray arm is always controlled by the driving motor 4 and is not affected by the change of the washing environment, the rotation state is stable, which is beneficial to eliminating the cleaning dead corners and improving the cleaning effect.

[0026] The water pumping structure 3 includes a driving member 31 (a motor) and an impeller assembly 32. The impeller assembly 32 is arranged in the middle and lower part of the box body 1 below the main spray arm 2 and extends into the main spray arm 2 at the upper part. The driving member 31 drives the impeller assembly 32 to rotate, and can pump the water at the bottom of the box body 1 into the main spray arm 2.

[0027] The transmission assembly 5 includes a gear 51, a first toothed ring 52, and a second toothed ring 53. The gear 51 is connected to the upper end of the motor shaft 4 of the motor 4 and rotates synchronously with the motor shaft 4. The bottom of the secondary spray arm is provided with a water inlet sleeve 63 capable of being connected to the main spray arm 2. The first toothed ring 52 is arranged around the water inlet sleeve 63. The second toothed ring 53 is arranged around the gear 51 and the periphery of the water inlet sleeve 63 and meshes with the gear 51 and the first toothed ring 52 respectively for transmission. With the above structure, the stable linkage between the driving motor 4 and the secondary spray arm is realized, and the motor shaft 41 is hidden in the output shaft of the driving member 31, shortening the power connection line, and the connection is convenient and reliable.

[0028] There are multiple sets of auxiliary spray arms, which are arranged at intervals in the length direction of the main spray arm 2. A first gear ring 52 is provided on the periphery of the water inlet sleeve 63 of each auxiliary spray arm and is linked with a second gear ring 53 through the first gear ring 52. With the above structure, a larger spray coverage area can be provided, and each auxiliary spray arm rotates under the combined linkage of the gear rings, and the rotation speed and direction are stable and controllable, which is beneficial to eliminating cleaning dead corners and improving the cleaning effect.

[0029] A receiving cavity 22 arranged along the length direction is provided at the top of the main spray arm 2. The receiving cavity 22 surrounds the water inlet sleeves 63 and gears 51 of each of the auxiliary spray arms. The second gear ring 53 is annular and is arranged along the edge of the receiving cavity 22 in the receiving cavity 22. With the above structure, the transmission assembly 5 is surrounded in the receiving cavity 22 for protection, so as to prevent the complex cleaning environment from having an adverse effect on it and maintaining the long-term and stable operation of the transmission assembly 5.

[0030] A water outlet 23 is opened on the top wall of the main spray arm 2. The lower end of the water inlet sleeve 63 of the auxiliary spray arm passes through the water outlet 23 and is inserted into the flow channel 21. A clamping foot 631 that can be rotationally matched and limited with the inner top wall of the main spray arm 2 is provided at the lower end of the water inlet sleeve 63. This structure facilitates the rotational restraint of each auxiliary spray arm on the main spray arm 2.

[0031] The auxiliary spray arm includes a first auxiliary spray arm 61 arranged near the end of the main spray arm 2 and a second auxiliary spray arm 62 arranged near the central part of the main spray arm 2. The first auxiliary spray arm 61 is in a disc shape, and the second auxiliary spray arm 62 is in a long strip shape extending along the length direction. With the above structure, a larger spray range can be provided to eliminate cleaning dead corners.

[0032] There are two sets of the first auxiliary spray arms 61, which are respectively arranged at both ends of the main spray arm 2. There are also two sets of the second auxiliary spray arms 62, which are arranged symmetrically with respect to the center of the main spray arm 2 between the two first auxiliary spray arms 61. Preferably, the two sets of the second auxiliary spray arms 62 are always vertically arranged. With the above structure, a larger spray range can be further provided to eliminate cleaning dead corners.

[0033] An air adding structure that can add air to the water column during the water column spraying process of the first auxiliary spray arm 61 is provided at the top of the first auxiliary spray arm 61. The water pressure at the end of the main spray arm is reduced. With the above structure, the stripping force of the water column sprayed at the end of the main spray arm 2 on the pollutants can be improved to eliminate cleaning dead corners.

[0034] The top wall of the first secondary spray arm 61 is provided with water spray holes 611. At the top of the first secondary spray arm 61, there are spaced-apart top plates 612 arranged. An air collection cavity 613 is enclosed between the top plate 612 and the top wall of the first secondary spray arm 61. The top plate 612 is provided with jet holes 614 arranged corresponding to the water spray holes. A gap 615 is formed between the jet holes 614 and the water spray holes 611, through which air can be inhaled into the water jet column in a jet state. According to the Venturi effect, when the water column passes through the water spray holes and the jet holes, negative pressure will be generated at the gap, thereby sucking the surrounding air into the water column to form a cavitation water column with bubbles. When the cavitation water column hits the surface of the object to be cleaned, the instantaneous rupture of the bubbles can increase the stripping force on the pollutants and improve the cleaning effect.

[0035] In the description and claims of the present invention, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention. However, these terms are used here only for the purpose of convenient description and are determined based on the exemplary orientations shown in the drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

Claims

1. A cleaning machine, comprising a box body (1), a main spray arm (2), a secondary spray arm and a water pumping mechanism (3). The main spray arm (2) is rotatably arranged in the box body (1). The main spray arm (2) is provided with a hollow flow channel (21). The secondary spray arm is rotatably arranged on the main spray arm (2) and is communicated with the flow channel (21). The water pumping mechanism (3) is used for pumping the water at the bottom of the box body (1) into the main spray arm (2). The driving member (31) of the water pumping mechanism (3) is arranged at the bottom of the box body (1) and the output shaft (311) extends upward. It is characterized in that: The output shaft (311) of the driving member (31) is hollow inside and extends to the top of the main spray arm (2). A motor (4) capable of driving the secondary spray arm to rotate directionally and at a constant speed is further provided at the bottom of the box body (1). The motor (4) is located at the bottom of the driving member (31), and the motor shaft (41) passes through the output shaft (311) and is connected to the secondary spray arm through a transmission assembly (5).

2. The washing machine according to claim 1, characterized in that: The transmission assembly (5) includes a gear (51), a first toothed ring (52) and a second toothed ring (53). The gear (51) is connected to the upper end of the motor shaft (41) and rotates synchronously with the motor shaft (41). An inlet sleeve capable of being connected to the main spray arm (2) is provided at the bottom of the secondary spray arm. The first toothed ring (52) is arranged around the inlet sleeve. The second toothed ring (53) is arranged around the gear (51) and the periphery of the inlet sleeve and meshes with the gear (51) and the first toothed ring (52) respectively for transmission.

3. The washing machine according to claim 2, wherein: There are multiple groups of the secondary spray arms, which are arranged at intervals in the length direction of the main spray arm (2). A first toothed ring (52) is provided on the periphery of the inlet sleeve of each secondary spray arm, and the secondary spray arms are interconnected through the first toothed ring (52) and the second toothed ring (53).

4. The cleaning machine according to claim 3, wherein: A receiving cavity arranged along the length direction is provided at the top of the main spray arm (2). The receiving cavity surrounds the inlet sleeves of the secondary spray arms and the gears (51). The second toothed ring (53) is annular and is arranged along the edge of the receiving cavity in the receiving cavity.

5. The washing machine according to claim 2, wherein: A water outlet is provided on the top wall of the main spray arm (2). The lower end of the inlet sleeve of the secondary spray arm passes through the water outlet and is inserted into the flow channel (21). A clamping foot capable of rotationally mating and limiting with the inner top wall of the main spray arm (2) is provided at the lower end of the inlet sleeve.

6. The washing machine according to any one of claims 1 to 5, characterized in that: The secondary spray arm includes a first secondary spray arm (61) arranged near the end of the main spray arm (2) and a second secondary spray arm (62) arranged near the central part of the main spray arm (2). The first secondary spray arm (61) is disc-shaped, and the second secondary spray arm (62) is strip-shaped and extends along the length direction.

7. The washing machine according to claim 6, wherein: There are two groups of the first secondary spray arms (61), which are respectively arranged at both ends of the main spray arm (2). There are also two groups of the second secondary spray arms (62), which are arranged between the two first secondary spray arms (61) and are symmetrically arranged with respect to the center of the main spray arm (2).

8. The washing machine according to claim 7, characterized in that: The two groups of the second secondary spray arms (62) are always vertically arranged.

9. The washing machine according to claim 6, characterized in that: A gas adding structure capable of adding air into the water column during the water jet spraying process of the first secondary spray arm (61) is provided at the top of the first secondary spray arm (61).

10. The washing machine according to claim 9, characterized in that: Spray holes are provided on the top wall of the first secondary spray arm (61). A top plate arranged at intervals is provided at the top of the first secondary spray arm (61). A gas collecting cavity is enclosed between the top plate and the top wall of the first secondary spray arm (61). Jet holes corresponding to the spray holes are provided on the top plate. A gap capable of allowing air to be inhaled into the jet water column in a jet state is formed between the jet holes and the spray holes.

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