Spray structure for cleaning machine and cleaning machine

Abstract

The present invention relates to a spray structure for a cleaning machine and a cleaning machine, wherein the spray structure comprises a spray arm having a flow channel inside, the spray arm being provided with a spray hole and a water inlet in fluid communication with the flow channel; a containing box for containing detergent, the containing box comprising a box body, one side of the box body being open; a box cover being movably arranged at the open portion of the box body and capable of opening and closing the open portion of the box body; and a driving member being arranged on the containing box and used for opening or closing the box cover. The containing box for containing detergent is arranged on the spray arm, the spray arm has a high degree of integration, and no detergent dispensing structure is required to be arranged on the door body.

Description

Technical Field

[0001] The present invention relates to the technical field of washing machines for washing tableware, fruits and vegetables, and in particular to a spray structure for a washing machine and the washing machine. Background Art

[0002] Dishwashers are becoming increasingly popular due to their excellent cleaning performance, ability to disinfect food, and time-saving and labor-saving advantages. Currently, most dishwashers use dishwashing powder as a detergent. A dispenser is located in the dishwasher door. After opening the door, the user places the dishwashing powder in the dispenser. During the wash cycle, the dispenser dispenses the powder into the dishwasher's wash chamber at the appropriate time, as described in the "Door Structure and Dishwasher" patent application filed in Chinese Utility Model Patent No. CN202122838628.7 (Publication No. CN216364965U).

[0003] Most of the current detergent dispensing structures are as shown in the above-mentioned patents, which require an additional detergent dispensing structure to be specially set on the door body, increasing costs. In order to be able to transport detergent into the washing chamber of the dishwasher, or to be able to dispense washing liquid at a specific cleaning sequence, the detergent dispensing structure is usually electronically controlled, which is costly and has a high failure rate.

[0004] Of course, you can also manually add detergent to the washing chamber, but this is more troublesome. Secondly, it is not convenient to add it during a specific cleaning sequence, which affects the cleaning effect. Moreover, if the detergent is solid, it may be discharged before it is completely dissolved if it is directly added to the washing chamber.

[0005] Therefore, the existing detergent dispensing structure needs to be further improved. Summary of the Invention

[0006] The first technical problem to be solved by the present invention is to provide a spray structure for a washing machine capable of dispensing detergent in response to the current status of the existing technology.

[0007] The second technical problem to be solved by the present invention is to provide a cleaning machine using the above-mentioned spray structure in view of the current status of the existing technology.

[0008] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a spray structure for a cleaning machine, comprising

[0009] A spray arm has a flow channel inside, and a spray hole and a water inlet are opened on the spray arm and are fluidically connected to the flow channel;

[0010] Characterized in that, the spray structure also includes

[0011] A container for containing detergent, the container comprising

[0012] a box body, one side of which is open;

[0013] The box cover is movably arranged at the opening of the box body and can open and close the opening of the box body;

[0014] The driving member is provided on the accommodating box and is used for opening or closing the box cover.

[0015] The driving member may be a motor and a push rod, and the push rod is connected to the box cover. However, this also requires the driving member to be integrated into the spray arm, which is not only structurally complex, but also has a certain gravity on the driving member, which increases the resistance to the rotation of the spray arm. Therefore, the side of the box body is open, and the box cover is tilted from top to bottom toward the box body. The lower end of the box cover is connected to the box body via a rotating shaft, and the upper end of the box cover is a free end. Under the action of the elastic member, the box cover always maintains its upper end against the box body, thereby closing the opening of the box body. The driving member is slidably arranged on the box cover and can move up and down. When the driving member moves upward to the free end of the box cover, the box cover deflects downward about the rotating shaft under the action of its own gravity and the driving member. When the driving member moves to the upper end of the box cover, it presses the box cover downward to deflect the box cover, thereby opening the opening of the box body. When the driving member is located at the lower end of the box cover, the box cover closes the opening of the box body under the action of the elastic member.

[0016] To enable the driver to move up and down along the lid, the spray arm is strip-shaped, with the water inlet located in the center of the arm and the container positioned to one side. The container body faces away from the water inlet and opens toward the end of the spray arm. The rotating shaft extends along the width of the spray arm. This allows the driver to move to the upper end of the lid when the spray arm rotates, especially at high speeds. However, at lower speeds, the centrifugal force generated by the spray arm is insufficient to move the driver upward.

[0017] To prevent the driver from being immersed in detergent or wash water, which would create excessive resistance to its movement, the lid is provided with a receiving portion having a groove extending along the length of the lid. The driver is accommodated within the groove and can move along the groove. The groove isolates the driver from the outside world, minimizing its resistance to movement.

[0018] Preferably, the driving member is spherical, and spherical objects are easy to roll.

[0019] If the detergent is solid, to enhance its cleaning performance, the lid is provided with a through-hole extending through the wall thereof, and the spray arm is provided with a nozzle in fluid communication with the flow channel, with the outlet end of the nozzle angled toward the through-hole in the lid. This allows the nozzle to spray water into the container, dissolving the solid detergent into a liquid state. The liquid detergent then dissolves well in the water in the washing chamber, resulting in a better cleaning effect.

[0020] To control the movement of the driver to the upper or lower end of the lid, the spray mechanism also includes a speed regulating mechanism for adjusting the speed of the spray arm. When the spray arm rotates at a high speed, the driver can move to the upper end of the lid. When the spray arm rotates at a low speed, the centrifugal force generated by the spray arm is insufficient to move the driver upward.

[0021] The speed of the spray arm can be adjusted by adjusting the speed of the motor that drives the spray arm to rotate, but the cost of a motor with a speed change function is relatively high, so a spray hole that is fluidically connected to the flow channel is also provided near the end of the spray arm. The spray hole is arranged at an angle, and a slide groove extending along the length of the spray arm is provided on the spray arm. The slide groove is inclined from bottom to top toward the end of the spray arm, and the spray hole intersects with the slide groove. A shielding member that can open or close the spray hole is provided in the slide groove, and the shielding member can slide along the slide groove. The shielding member and the spray hole together constitute the speed regulation structure.

[0022] The water jetting from the spray holes, angled to rotate the spray arm, accelerates the speed of the water entering the spray arm, intensifies the water jetting from the spray holes, and increases the arm's speed. During this process, the shield, under the centrifugal force of the shield, overcomes the gravity of the inclined surface at the bottom of the chute and rolls to the spray holes, blocking the water jet there and causing the spray arm's speed to rapidly decrease. As the speed decreases, the shield experiences less centrifugal force, and gravity pulls it away from the spray holes, returning it to its lower position. At this point, the water jetting from the spray holes rapidly ejects, accelerating the spray arm's speed. The reciprocating action of the shield allows the spray arm to adjust its speed while maintaining a fixed motor speed.

[0023] The change in the rotation speed of the spray arm creates different water flow impact forces on the surface of the tableware, improving the cleanliness; and also causes the driving member to move along the box cover to open or close the opening of the box body.

[0024] As can be seen from the above, the rotation speed of the spray arm can be adjusted by providing the shielding member and the spray hole, which is low in cost and simple in structure.

[0025] Preferably, the shielding member is spherical, and spherical objects are easy to roll.

[0026] In the above solution, the spray hole is located on the top wall of the spray arm, and the injection hole and the receiving box are both located at the bottom of the spray arm. The injection hole and the receiving box are located on opposite sides of the water inlet, and the injection hole is tilted from top to bottom toward the water inlet. This ensures that the receiving box and the injection hole do not interfere with the spray hole, which is a reasonable design.

[0027] The technical solution adopted by the present invention to solve the second technical problem is: a cleaning machine using the above-mentioned spray structure, characterized in that it includes a box body with a washing chamber, and the spray arm is rotatably arranged in the box body.

[0028] Compared with the prior art, the advantages of the present invention are as follows: the present invention arranges the storage box for detergent on the spray arm, the spray arm has a high degree of integration, and there is no need to provide a detergent dispensing structure on the door body; in addition, the storage box is designed to be divided into a box body and a box cover, and the box cover can open or close the opening of the box body, so that when detergent is needed, the box body is opened and the detergent is thrown out under the centrifugal force of the rotation of the spray arm; when detergent is not needed, the box body is closed and the detergent is dispensed under the centrifugal action of the spray arm, and there is no need to set up components such as a pump body to pump the detergent into the washing chamber of the cleaning machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram of a spray structure according to an embodiment of the present invention;

[0030] Figure 2 for Figure 1 A schematic diagram of the structure in another direction;

[0031] Figure 3 for Figure 1 Schematic diagram of the structure with the upper half shell removed;

[0032] Figure 4 for Figure 3 sectional view of

[0033] Figure 5 for Figure 4 Enlarged view of point B. DETAILED DESCRIPTION

[0034] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0035] like Figures 1 to 5 As shown, the cleaning machine of this preferred embodiment includes a box body (not shown in the figure) and a spray structure A, and a washing chamber is provided inside the box body.

[0036] Spray structure A includes a spray arm 1, which is rotatably mounted within a housing. It has a flow channel 10 within it, along with a spray hole 11, a water inlet 12, and an ejection hole 13, all in fluid communication with the flow channel 10. This is prior art and will not be further described here. Reference is made to CN202221059985.1, "A Spray Arm 1 and Cleaning Machine with Adjustable Speed," filed by the present applicant. The spray arm 1 is composed of an upper half shell 1a and a lower half shell 1b joined together.

[0037] In this embodiment, the spray arm 1 is strip-shaped, the spray hole 11 is provided on the top wall of the spray arm 1, and the injection hole 13 is provided on the bottom wall of the spray arm 1. The injection hole 13 is inclined from top to bottom toward the water inlet 12. The water inlet 12 is provided on the bottom wall of the spray arm 1 and is located in the central part of the spray arm 1. Of course, the spray hole 11, the injection hole 13 and the water inlet 12 are not limited to the arrangement of this embodiment, and other reasonable layout methods can also be used.

[0038] The spray structure also includes a container box 2 for holding detergent, which can be liquid or solid. The container box 2 includes a box body 21, a box cover 22 and a driving member 23. The container box 2 is located on one side of the water inlet 12. The container box 2 is arranged at the bottom of the spray arm 1, and the spray hole 13 and the container box 2 are respectively located on opposite sides of the water inlet 12.

[0039] The box body 21 faces away from the water inlet 12 and is open toward the end of the spray arm 1. The box cover 22 is movably mounted on the open portion of the box body 21 and can be opened and closed. In this embodiment, a box with open sides and a top is provided at the bottom of the spray arm 1. This box and the bottom of the spray arm 1 together form the box body 21 with open sides. Alternatively, the box body 21 with open sides can be directly mounted on the spray arm 1.

[0040] The lid 22 is tilted downwardly toward the body 21. The lower end of the lid 22 is connected to the body 21 via a rotating shaft 24. The rotating shaft 24 extends along the width of the spray arm 1. The upper end of the lid 22 is free. Under the action of an elastic member 25, the lid 22 always maintains its upper end against the body 21, thereby closing the opening of the body 21. In this embodiment, the elastic member 25 is a torsion spring mounted on the rotating shaft 24.

[0041] The driving member 23 is disposed on the lid 22 and is used to open or close the lid 22. The lid 22 is provided with a receiving portion 26 having a receiving groove 261 extending along the length of the lid 22. The driving member 23 is received in the receiving groove 261 and can move along the receiving groove 261. Specifically, the driving member 23 is slidably disposed on the lid 22 and can move up and down. When the driving member 23 moves upward to the free end of the lid 22, the lid 22 deflects downward about the rotation axis 24 under the action of its own gravity and the driving member 23. In this embodiment, the driving member 23 is spherical, and spherical objects are easy to roll.

[0042] When the driving member 23 moves to the upper end of the box cover 22, it presses the box cover 22 downward to deflect the box cover 22 downward, thereby opening the opening of the box body 21. When the driving member 23 is located at the lower end of the box cover 22, the box cover 22 closes the opening of the box body 21 under the action of the elastic member 25.

[0043] In addition, the cover 22 is provided with a through hole 221 extending through the wall thereof, and the bottom wall of the spray arm 1 is provided with a nozzle 15, with the water outlet of the nozzle 15 tilted toward the through hole 221 in the cover 22. In this embodiment, the nozzle 15 is tilted from top to bottom toward the water inlet 12, so that the nozzle 15 can spray water into the accommodating box 2, dissolving the solid detergent into liquid form. The liquid detergent can then be effectively dissolved in the water in the washing chamber, achieving a good cleaning effect.

[0044] When the rotation speed of the spray arm 1 is relatively high, the driving member 23 can move to the upper end of the box cover 22, and the box cover 22 opens; when the rotation speed of the spray arm 1 is relatively low, the centrifugal force generated by the spray arm 1 is insufficient to move the driving member 23 upward, and the box cover 22 closes. Therefore, this embodiment is also provided with a speed regulating structure for adjusting the rotation speed of the spray arm 1.

[0045] The spray arm 1 is provided with a chute 14 extending along its length. The chute 14 slopes upward from bottom to top toward the end of the spray arm 1. The spray hole 13 intersects the chute 14. A shielding member 3 is provided in the chute 14 to open or close the spray hole 13. The shielding member 3 can slide along the chute 14. The shielding member 3 and the spray hole 13 together form a speed control mechanism. In this embodiment, the shielding member 3 is spherical, which is easy to roll.

[0046] The working process of the spray structure of this embodiment is as follows:

[0047] The water flow sprayed from the spray hole 13 is set at a certain angle, which can drive the spray arm 1 to rotate. When the speed of the motor (the motor is the main power to drive the spray arm 1 to rotate, and the spray hole 13 is the auxiliary power to drive the spray arm 1 to rotate) increases, the speed of the water flow entering the spray arm 1 is accelerated, the water flow sprayed from the spray hole 13 is strengthened, and the speed of the spray arm 1 is increased.

[0048] As the speed of the spray arm 1 increases, the shield 3, under the action of centrifugal force, overcomes the gravity of the inclined surface at the bottom of the chute 14 in which it is located and rolls to the spray hole 13, blocking the spraying water flow there. This causes the speed of the spray arm 1 to rapidly decrease. As the speed decreases, the centrifugal force on the shield 3 decreases, and gravity moves it away from the spray hole 13 and returns to the lower position. At this time, the water flow from the spray hole 13 is rapidly ejected, driving the speed of the spray arm 1 to increase. The reciprocating action of the shield 3 realizes the speed adjustment of the spray arm 1 under the condition of fixed motor speed.

[0049] As the speed of the spray arm 1 changes, the container 2 located on the other side of the water inlet 12 also operates accordingly. When the speed is low, the container lid 22 is closed, and the water from the spray hole 13 can enter the container 2 through the through hole 221 in the container lid 22, pre-rinsing the high-concentration detergent or dishwashing powder in the container 2. When the speed of the spray arm 1 increases, the driving member 23, under the centrifugal force of the spray arm 1, overcomes the effect of gravity and rolls toward the upper end of the container lid 22. Under the action of its own gravity, it presses down the container lid 22, opening the opening of the container body 21, and the detergent is thrown outward under the action of centrifugal force, achieving delivery. When the speed of the spray arm 1 decreases, the shielding member 3 moves downward under the action of gravity, and the container lid 22 returns to its original position under the action of the elastic member 25, closing the opening of the container body 21.

[0050] The change in the rotation speed of the spray arm 1 creates different water flow impact forces on the surface of the tableware, thereby improving the cleanliness; and also enables the driving member 23 to move along the box cover 22 to open or close the opening of the box body 21.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration 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.

[0052] The "fluid communication" referred to in the present invention refers to the spatial position relationship between two components or parts (hereinafter collectively referred to as the first part and the second part), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, conduit, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A spray structure for a cleaning machine, comprising: A spray arm (1) having a flow channel (10) therein, wherein the spray arm (1) is provided with a spray hole (11) and a water inlet (12) in fluid communication with the flow channel (10); It is characterized in that The spray structure also includes A containing box (2) for containing detergent, the containing box (2) comprising A box body (21), one side of the box body (21) being open; A box cover (22) is movably disposed at the opening of the box body (21) and can open and close the opening of the box body (21); A driving member (23), disposed on the containing box (2), and used for opening or closing the box cover (22); The side of the box body (21) is open, and the box cover (22) is inclined from top to bottom toward the box body (21). The lower end of the box cover (22) is connected to the box body (21) through a rotating shaft (24), and the upper end of the box cover (22) is a free end. Under the action of the elastic member (25), the box cover (22) always maintains its upper end against the box body (21), thereby closing the open part of the box body (21); the driving member (23) is slidably arranged on the box cover (22) and can move up and down. When the driving member (23) moves upward to the free end of the box cover (22), the box cover (22) deflects downward around the rotating shaft (24) under the action of its own gravity and the driving member (23); The box cover (22) is provided with a receiving portion (26), the receiving portion (26) having a receiving groove (261) extending along the length direction of the box cover (22), and the driving member (23) is received in the receiving groove (261) and can move along the receiving groove (261); The driving member (23) is spherical.

2. The spray structure according to claim 1, characterized in that: The spray arm (1) is strip-shaped, the water inlet (12) is located in the central part of the spray arm (1), the accommodating box (2) is located on one side of the water inlet (12), the box body (21) faces away from the water inlet (12) and is open toward the end of the spray arm (1), and the rotating shaft (24) extends along the width direction of the spray arm (1).

3. The spray structure according to claim 1, characterized in that: The box cover (22) is provided with a through hole (221) penetrating the wall thickness thereof, the spray arm (1) is provided with a nozzle (15) in fluid communication with the flow channel (10), and the water outlet end of the nozzle (15) is inclined toward the through hole (221) on the box cover (22).

4. The spray structure according to any one of claims 1 to 3, characterized in that: It also includes a speed regulating structure for adjusting the rotation speed of the spray arm (1).

5. The spray structure according to claim 4, characterized in that: A spray hole (13) in fluid communication with the flow channel (10) is also provided at a position adjacent to the end of the spray arm (1), the spray hole (13) being arranged at an angle, the spray arm (1) being provided with a slide groove (14) extending along its length direction, the slide groove (14) being inclined from bottom to top toward the end of the spray arm (1), the spray hole (13) intersecting with the slide groove (14), the slide groove (14) being provided with a shielding member (3) capable of opening or closing the spray hole (13), the shielding member (3) being able to slide along the slide groove (14), the shielding member (3) and the spray hole (13) together constituting the speed regulating structure.

6. The spray structure according to claim 5, characterized in that: The shielding member (3) is spherical.

7. The spray structure according to claim 5, characterized in that: The spray hole (11) is arranged on the top wall of the spray arm (1), the injection hole (13) and the accommodating box (2) are both arranged at the bottom of the spray arm (1), the injection hole (13) and the accommodating box (2) are respectively located on opposite sides of the water inlet (12), and the injection hole (13) is arranged obliquely from top to bottom toward the water inlet (12).

8. A cleaning machine using the spray structure according to any one of claims 1 to 7, characterized in that: It comprises a box body with a washing chamber, and the spray arm (1) is rotatably arranged in the box body.

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