Automatic door opening and closing method of dishwasher and dishwasher

Abstract

The application belongs to the technical field of household appliances, and specifically discloses an automatic door opening and closing method of a dishwasher and the dishwasher. The automatic door opening and closing method comprises the following steps: when a door opening instruction is received and the upper end of a door assembly is opened by a preset distance, a door opening adjustment action is performed, so that the gravity torque of the gravity of the door assembly on the rotation axis of the door assembly is greater than the support torque applied to the door assembly by a hinge mechanism, and the door opening adjustment action comprises increasing the gravity center height of the door assembly and / or increasing the gravity of the door assembly; and / or when a door closing instruction is received and the door assembly is in an open state, a door closing adjustment action is performed, so that the gravity torque is less than the support torque, and the door closing adjustment action comprises reducing the gravity center height of the door assembly and / or reducing the gravity of the door assembly. The application can realize the automatic door opening and closing action of the dishwasher by adjusting the gravity and / or gravity center height of the door assembly, and improve the automation degree and use experience of the dishwasher.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to an automatic door opening and closing method for a dishwasher and the dishwasher itself. Background Technology

[0002] A dishwasher is an appliance used to automatically clean and dry dishes and other tableware. It can effectively free up the user's hands, reduce the user's labor intensity, and improve the user's quality of life.

[0003] A dishwasher typically consists of a body and a door. The body has a front-opening cleaning chamber containing a dish rack and a spray system. The door is usually hinged to the body at the bottom to close the opening of the cleaning chamber, and the door is locked or unlocked to the body at the top via a door lock mechanism to open and close the door.

[0004] To facilitate the discharge of steam from the washing chamber during the drying process, the prior art provides a door lock mechanism with a push-out function. The door lock mechanism can push the upper part of the door open relative to the machine body by a certain distance during the operation of the dishwasher, so that steam can be discharged through the gap formed between the door and the upper part of the machine body; after the steam is discharged, the door lock mechanism pulls the door to close.

[0005] While existing dishwasher technology can open the top of the door, it cannot fully open and automatically close the door, requiring users to manually open and close the door, which is time-consuming and laborious, affecting the automation and user experience of the dishwasher. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic door opening and closing method for a dishwasher and a dishwasher in general, so as to realize automatic door opening and closing control of the dishwasher, improve the automation level of the dishwasher and the user experience.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An automatic door opening and closing method for a dishwasher, the dishwasher including a body and a door assembly, the lower end of the door assembly being rotatably connected to the body via a hinge mechanism, the upper end of the door assembly being connectable to the body via a door lock mechanism, the top of the body having an ejection mechanism capable of opening the door assembly, the center of gravity height and / or gravity magnitude of the door assembly being adjustable, the automatic door opening and closing method comprising:

[0009] When a door opening command is received and the upper end of the door assembly is pushed open a preset distance by the ejection mechanism, a door opening adjustment action is performed so that the gravitational torque formed by the weight of the door assembly on the rotation axis of the door assembly is greater than the supporting torque applied to the door assembly by the hinge mechanism. The door opening adjustment action includes increasing the center of gravity height of the door assembly and / or increasing the weight of the door assembly.

[0010] And / or, upon receiving a closing command and when the door assembly is in the open state, a closing adjustment action is performed to make the gravitational torque less than the support torque, the closing adjustment action including lowering the center of gravity height of the door assembly and / or reducing the gravity of the door assembly.

[0011] As an optional technical solution for an automatic door opening and closing method, the door assembly includes a door body and a regulating liquid tank disposed on the door body, the regulating liquid tank being used to store regulating liquid;

[0012] The door opening adjustment action includes: injecting the adjustment liquid into the adjustment liquid tank to increase the gravity of the door assembly and increase the center of gravity height of the door assembly;

[0013] The door closing adjustment action includes: discharging a portion of the adjusting liquid from the adjusting liquid tank into the door assembly to reduce the weight of the door assembly and lower the center of gravity of the door assembly.

[0014] As an optional technical solution for an automatic door opening and closing method, when performing the door opening adjustment action, the adjustment liquid is controlled to be added to the adjustment liquid tank at a liquid inlet speed less than or equal to a first preset speed.

[0015] As an optional technical solution for an automatic door opening and closing method, after receiving the door opening command and before executing the door opening adjustment action, it is determined whether the liquid level in the adjustment tank has reached the first preset liquid level. If so, a portion of the adjustment liquid in the adjustment tank is first discharged from the door assembly until the liquid level in the adjustment tank is lower than or equal to the second preset liquid level before executing the door opening adjustment action.

[0016] As an optional technical solution for an automatic door opening and closing method, after receiving the door closing command and before executing the door closing adjustment action, it is determined whether the liquid level in the adjustment liquid tank has reached a third preset liquid level. If not, the adjustment liquid is first injected into the adjustment liquid tank until the liquid level reaches a fourth preset liquid level before executing the door closing adjustment action. The fourth preset liquid level is equal to or higher than the third preset liquid level.

[0017] As an optional technical solution for an automatic door opening and closing method, when performing the door closing adjustment action, the adjustment liquid is controlled to be discharged at a discharge rate greater than or equal to a second preset speed.

[0018] As an optional technical solution for an automatic door opening and closing method, when performing the door closing adjustment action, the drainage speed is controlled so that when the door assembly is fully closed, the regulating liquid in the regulating liquid tank is just drained or there is still regulating liquid in the regulating liquid tank.

[0019] As an optional technical solution for an automatic door opening and closing method, when the door closing adjustment action is completed, the liquid level in the adjustment tank reaches the equilibrium liquid level, which is the liquid level of the adjustment liquid in the adjustment tank when the gravitational torque is equal to the support torque.

[0020] As an optional technical solution for an automatic door opening and closing method, when performing the door closing adjustment action, the adjustment liquid in the adjustment tank is discharged into the washing circulation water circuit of the dishwasher.

[0021] As an optional technical solution for an automatic door opening and closing method, after receiving the door closing command and before executing the door closing adjustment action, it is determined whether the door lock mechanism of the dishwasher is in a locked state. If so, a first door closing abnormal alarm is issued.

[0022] And / or, when the door closing adjustment action is completed, detect whether the door lock mechanism of the dishwasher is in the locked state; if not, issue a second door closing abnormal alarm.

[0023] And / or, after receiving the door opening command and before performing the door opening adjustment action, determine whether the door lock mechanism of the dishwasher is in a locked state; if not, issue a door opening abnormality alarm.

[0024] As an optional technical solution for an automatic door opening and closing method, before receiving the door opening command and before the ejection mechanism extends, it is determined whether the door lock mechanism of the dishwasher is in a locked state. If so, the ejection mechanism is controlled to eject.

[0025] And / or, before receiving the door closing command and executing the door closing adjustment action, determine whether the ejection mechanism is in the ejection state. If so, control the ejection mechanism to return to the initial state before executing the door closing adjustment action.

[0026] A dishwasher includes a body and a door assembly. The lower end of the door assembly is rotatably connected to the body via a hinge mechanism, and the upper end of the door assembly is connected to the body via a door lock mechanism. The top of the body has an ejection mechanism capable of opening the door assembly. The door assembly includes a door body and a gravity adjustment component disposed on the door body. The gravity adjustment component is capable of adjusting the center of gravity height and / or the magnitude of gravity of the door body. The dishwasher uses the automatic door opening and closing method described above for automatic door opening and closing control.

[0027] The beneficial effects of this invention are as follows:

[0028] The automatic door opening and closing method for a dishwasher provided by this invention can achieve automatic door opening and closing control of the dishwasher door assembly by adjusting the center of gravity height and / or gravity of the door assembly, thereby improving the automation level of the dishwasher and enhancing the user experience.

[0029] The dishwasher provided by this invention, by adopting the above-mentioned automatic door opening and closing method, can realize automatic door opening and closing control of the dishwasher, improve the automation level of the dishwasher, and enhance the user experience of the dishwasher. Attached Figure Description

[0030] Figure 1 A partial structural schematic diagram of the dishwasher provided in Embodiment 1 of the present invention;

[0031] Figure 2 This is a flowchart of the automatic door opening method provided in Embodiment 5 of the present invention;

[0032] Figure 3 This is a flowchart of the automatic door closing method provided in Embodiment 5 of the present invention.

[0033] The markings in the image are as follows:

[0034] 1. Gravity adjustment component; 11. Adjustment tank; 12. Inlet pipe; 13. Drain pipe; 14. Drain valve;

[0035] 2. Door body; 3. Body; 31. Inner liner; 311. Water collection section; 32. Base; 321. Receiving groove; 33. Water inlet valve; 4. Hinge mechanism; 41. Hinge shaft; 42. Rotating hinge plate; 43. Fixed hinge plate; 44. Pull rope; 45. Guide wheel; 46. Tension spring; 5. Door lock mechanism; 6. Push-out mechanism. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0037] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0040] Example 1

[0041] This embodiment provides a dishwasher that can automatically open and close the dishwasher door assembly, improving the automation and user experience of the dishwasher.

[0042] like Figure 1 As shown, the dishwasher includes a body 3, a door assembly, a hinge mechanism 4, and a door lock mechanism 5. The body 3 has a washing chamber with a front opening. The lower end of the door assembly is hinged to the body 3 via the hinge mechanism 4, allowing the door assembly to rotate between an open position (open washing chamber opening) and a closed position (closed washing chamber opening). The upper end of the door assembly engages with the body 3 via the door lock mechanism 5, which has an unlocked state and a locked state. When the door assembly is in the closed state, the door lock mechanism 5 can switch from the unlocked state to the locked state to lock the door assembly and the body 3; when the door lock mechanism 5 is in the unlocked state, the door assembly can rotate from the closed state to the open state.

[0043] The body 3 includes a casing (not shown), a base 32 located inside the casing, and an inner liner 31. The base 32 is installed at the bottom inside the casing and its left and right sides are respectively connected to the two left and right side plates of the casing. The inner liner 31 sits on the upper end of the base 32 and is connected to the base 32. The left and right sides of the inner liner 31 are respectively connected to the left and right side plates of the two casings, and the rear side of the inner liner 31 is connected to the rear back plate of the casing. The base 32 has a receiving groove 321 with an opening at the top.

[0044] The top of the body 3 is also provided with an ejection mechanism 6, which has an ejection state and an initial state. When the ejection mechanism 6 changes from the initial state to the ejection state, the telescopic part of the ejection mechanism 6 can eject and push the upper end of the door assembly to open a preset distance. When the ejection mechanism 6 is in the extended state, the door lock mechanism 5 can maintain the locked state of the door assembly and the body 3.

[0045] Exemplarily, the hinge mechanism 4 includes a hinge shaft 41, a fixed hinge plate 43, a rotating hinge plate 42, a pull rope 44, a tension spring 46, and a guide wheel 45. Specifically, the rotating hinge plate is fixedly installed on one side of the lower end of the door assembly, and the fixed hinge plate is fixedly installed on the corresponding side of the lower end of the body 3. The fixed hinge plate and the rotating hinge plate are hinged by the hinge shaft 41, which extends in the left-right direction of the dishwasher, thereby allowing the door assembly to rotate relative to the body 3 about the axis of the hinge shaft 41. The rotating hinge plate is provided with a hook, which connects to one end of the pull rope 44; the guide wheel 45 is rotatably installed on the fixed hinge plate, and the pull rope 44 is wound around the guide wheel 45; the other end of the pull rope 44 passes around the guide wheel 45 and is connected to one end of the tension spring 46, and the other end of the tension spring 46 is connected to the body 3. During the opening or closing of the door assembly, the tension spring 46 applies a supporting torque to the hinge shaft 41 via the tension rope 44 to balance the gravitational torque formed by the weight of the door assembly at the axis of the hinge shaft 41.

[0046] It is worth noting that the body 3, hinge mechanism 4, door lock mechanism 5, and ejection mechanism 6 can all be configured using existing technologies, which is not the focus of this invention, and this invention does not limit the above structures. Furthermore, the door lock mechanism 5 and ejection mechanism 6 can be configured separately, that is, the ejection mechanism 6 and the door lock mechanism 5 can be arranged side-by-side on the top of the body 3; or the door lock mechanism 5 and the ejection mechanism 6 can be integrated, that is, the door lock mechanism 5 and the ejection mechanism 6 can be integrated into one device and share some structural components.

[0047] To achieve automatic opening and closing of the door assembly, in this embodiment, the door assembly includes a door body 2 and a gravity adjustment component 1. The gravity adjustment component 1 is installed on the door body 2. The gravity adjustment component 1 can adjust the magnitude of its own weight and / or the height of its center of gravity to regulate the weight and / or center of gravity of the door assembly, allowing the door assembly to switch between a downward deflection state and an upward deflection state. When the door assembly is in the downward deflection state, the gravitational torque generated by the gravity of the door assembly rotating around the hinge axis 41 is M. G1 When the door assembly is in the upward deflection state, the gravitational torque of the door assembly is M. G2 The supporting torque applied by hinge mechanism 4 to the door assembly is M0, M G1 >M0>M G2 .

[0048] The automatic door opening and closing device provided in this embodiment adjusts the center of gravity height and / or gravity magnitude of the door assembly by setting a gravity adjustment component 1. When the door assembly is in the upper open state and in the downward deflection state, the gravitational torque generated by the gravity of the door assembly is greater than the supporting torque applied by the hinge mechanism 4, so that the door assembly can flip downward and open under the torque difference between the gravitational torque and the supporting torque. When the door assembly is in the open state and the door assembly is in the upward deflection state, the gravitational torque generated by the gravity of the door assembly is less than the supporting torque applied by the hinge mechanism 4, so that the door assembly can flip upward and close under the drive of the supporting torque.

[0049] That is, the door assembly and dishwasher provided in this embodiment adjust the center of gravity height of the door assembly by setting the gravity adjustment component 1, so that the door assembly can automatically rotate from the closed state to the closed state when it is in the downward deflection state, and the door can rotate from the open state to the closed state when it is in the upward deflection state, thus realizing the automatic opening and closing of the door assembly, improving the automation level of the dishwasher and improving the user experience of the dishwasher; at the same time, the gravity adjustment component 1 is set on the door body 2, which can reduce the space occupied by the body 3, improve the convenience of setting the gravity adjustment component 1, reduce the probability of interference between the gravity adjustment component 1 and the internal structure of the body 3, improve the processing convenience of the dishwasher, and reduce the processing cost.

[0050] In this embodiment, the gravity adjustment assembly 1 includes an adjustment liquid tank 11 and a volume adjustment assembly. The adjustment liquid tank 11 is located within the receiving cavity and is used to store the adjustment liquid. The volume adjustment assembly is used to adjust the volume of the adjustment liquid in the adjustment liquid tank 11, thereby adjusting the magnitude of the gravity and / or the height of the center of gravity of the gravity adjustment assembly. This arrangement allows for flexible control of the overall weight and center of gravity position of the door assembly by controlling the amount of liquid entering the adjustment liquid tank 11, providing high adjustment flexibility and facilitating better control of the door opening and closing speed.

[0051] Furthermore, the regulating liquid tank 11 has an inlet and an outlet, the outlet of which can be selectively opened or closed. The volume regulating assembly includes an inlet pipe 12 and an outlet pipe 13. The inlet end of the inlet pipe 12 extends outside the door body 2 and is used to connect to the liquid source, while the outlet end of the inlet pipe 12 is located inside the receiving cavity and is sealed and connected to the inlet. The inlet end of the outlet pipe 13 is sealed and connected to the outlet, while the outlet end of the outlet pipe 13 extends outside the door body 2 to discharge the regulating liquid from the door assembly. This regulating method offers strong convenience and requires only the regulating liquid tank 11, inlet pipe 12, and outlet pipe 13 to be installed inside the door body 2, reducing the overall weight of the door assembly. It also facilitates the filling and emptying of the regulating liquid tank 11, improving the maintenance and cleaning convenience of the gravity regulating assembly.

[0052] The door body 2 includes an inner lining and an outer trim panel. The inner lining is connected to the inner side of the outer trim panel, and a receiving cavity is formed between the inner lining and the outer trim panel. The liquid tank 11, the liquid outlet of the liquid inlet pipe 12, and the liquid inlet of the liquid drain pipe 13 are all located within the receiving cavity. The liquid inlet of the liquid inlet pipe 12 and the liquid outlet of the liquid drain pipe 13 both extend out of the receiving cavity. This arrangement allows most of the gravity adjustment component 1 to be concealed inside the door body 2, improving the overall aesthetic appearance of the door assembly and reducing the interference of the dishwasher's washing and disinfection processes on the gravity adjustment component 1, thus improving the reliability of the gravity adjustment component 1. At the same time, it also effectively avoids interference between the gravity adjustment component 1 and the internal structure of the inner tank 31.

[0053] In other embodiments, the gravity adjustment component 1 can also be disposed on the inner side of the door body 2, such as by forming a mounting cavity in the inner side of the door body 2 and placing the gravity adjustment component 1 in the mounting cavity.

[0054] Furthermore, the inlet end of the inlet pipe 12 and the outlet end of the outlet pipe 13 both pass through the lower rear end of the door body 2 and extend into the base 32, so as to make the inlet and outlet settings of the inlet pipe 12 and the outlet pipe 13 more convenient, so that the inlet of the inlet pipe 12 and the outlet of the outlet pipe 13 can be better integrated with the water inlet and water outlet of the dishwasher.

[0055] In this embodiment, the inlet end of the liquid inlet pipe 12 is connected to the water inlet valve 33. The liquid inlet pipe 12 is connected to the external water supply pipe through the water inlet valve 33. The water inlet valve 33 is installed inside the base 32. The water supply pipe is connected to the faucet. Thus, when water is supplied to the regulating liquid tank 11, the water can be passed into the regulating liquid tank 11 by the water pressure of the tap water. There is no need to set up a drive structure for driving the water flow, which simplifies the structure and reduces costs.

[0056] In this embodiment, the water inlet valve 33 is a three-way solenoid valve, which has one water inlet and two water outlets. The water inlet is connected to an external water supply pipe, one of the water outlets is connected to the liquid inlet pipe 12, and the other water outlet is connected to the water inlet of the dishwasher's washing water pump. This allows the washing water pump and the liquid inlet pipe 12 to share a single water inlet valve 33, reducing the number of parts in the dishwasher and improving the water inlet convenience of the liquid inlet pipe 12.

[0057] The machine body 3 is equipped with a washing circulation water circuit for realizing cyclic washing. The liquid outlet of the drain pipe 13 is connected to the washing circulation water circuit, so that the liquid discharged from the drain pipe 13 can directly participate in the washing of the dishwasher, avoiding water waste and saving energy.

[0058] In another embodiment, a water storage tank can be installed in the receiving groove 321 of the base 32. The inlet end of the liquid inlet pipe 12 and the outlet end of the liquid outlet pipe 13 are both connected to the water storage tank. A circulation pump is installed on the liquid inlet pipe 12, which drives the liquid in the water storage tank to supply liquid to the regulating liquid tank 11. When it is necessary to discharge the regulating liquid, the liquid in the regulating liquid tank 11 is discharged into the water storage tank. That is, the regulating liquid circulates between the water storage tank, the liquid inlet pipe 12, the regulating liquid tank 11, and the liquid outlet pipe 13.

[0059] The drain pipe 13 gradually decreases in height from the inlet to the outlet, allowing the regulating liquid in the regulating tank 11 to be automatically discharged under gravity, eliminating the need for a drive structure and reducing costs. A drain outlet is provided at the bottom of the regulating tank 11 to ensure all liquid in the tank is discharged through the drain pipe 13. A drain valve 14 is installed at the drain outlet to control its opening and closing.

[0060] The drain pipe 13 and the inlet pipe 12 are preferably flexible hoses. The flexible hoses can be made of soft plastic or corrugated pipes to avoid pulling on the drain pipe 13 and the inlet pipe 12 during the rotation of the door assembly, thereby improving the stability and reliability of the gravity adjustment assembly 1 and reducing the probability of liquid leakage.

[0061] In this embodiment, the bottom of the inner liner 31 is recessed to form a water collection part 311, which forms a water collection trough with an open top. A washing water pump is installed in the receiving trough 321. The washing water pump is connected to the outlet of the water collection trough, and the outlet of the washing water pump is connected to the washing water supply pipe. The washing water supply pipe is connected to the spray mechanism in the washing chamber. The water collection trough, the washing water pump, and the washing water supply pipe are connected to form a washing circulation pipeline. The outlet end of the drain pipe 13 is preferably sealed and inserted through the water collection part 311 and connected to the water collection trough to simplify the connection structure, reduce the need for improvements to the washing circulation pipeline, and lower the improvement cost.

[0062] Furthermore, the water collection section 311 extends downward into the receiving groove 321, and the drain pipe 13 enters the receiving groove 321 through the front opening of the base 32 and is sealed and inserted into the water collection section 311. This arrangement eliminates the need for the drain pipe 13 to be exposed inside the inner tank 31, ensuring that both the inlet pipe 12 and the drain pipe 13 are concealed inside the dishwasher during normal use, thus improving the dishwasher's aesthetic appearance.

[0063] Furthermore, in order to achieve smooth injection and drainage of liquid in the regulating liquid tank 11, an exhaust port is provided on the top of the regulating liquid tank 11 to balance the internal and external pressure difference in the regulating liquid tank 11 and avoid obstruction of the flow of regulating liquid due to pressure difference.

[0064] In order to detect the liquid level in the regulating liquid tank 11 and better control the liquid filling and draining process in the regulating liquid tank 11, a liquid level detection device is installed in the regulating liquid tank 11. The liquid level detection device is used to detect the liquid level in the regulating liquid tank 11 and is communicatively connected to the controller of the dishwasher.

[0065] The regulating liquid tank 11 preferably adopts a rectangular box structure for ease of processing, and the length of the regulating liquid tank 11 is preferably greater than its height to better ensure the volume of the regulating liquid tank 11 and improve the regulating effect. The center of gravity of the regulating liquid tank 11 is preferably higher than the center of gravity of the door body 2, thereby increasing the gravitational torque generated by the weight of the regulating liquid tank 11 itself and improving the torque regulating effect. Furthermore, when the door body 2 is in the closed state, the line connecting the center of gravity of the regulating liquid tank 11 and the center of gravity of the door body 2 is preferably vertically arranged to ensure that when the volume of the regulating liquid in the regulating liquid tank 11 changes, the center of gravity of the door assembly only changes in height and does not change in the left and right direction, thereby improving the force balance on both sides of the door assembly during rotation.

[0066] Example 2

[0067] This embodiment provides a door assembly and a dishwasher. The structure of the door assembly and dishwasher provided in this embodiment is basically the same as that in Embodiment 1, except that the setting of the volume adjustment component is different. This embodiment will not repeat the contents that are the same as those in Embodiment 1.

[0068] In this embodiment, the volume regulating component includes a storage tank, an inlet pipe 12, and a drain pipe 13. The storage tank is mounted on the door body 2. Both ends of the inlet pipe 12 and the drain pipe 13 are connected to the regulating liquid tank 11 and the storage tank, respectively. The regulating liquid tank 11 is located above the center of gravity of the door body 2, and the storage tank is located below the center of gravity of the door body 2. A drain valve 14 is provided at the drain port of the drain pipe 13 or the regulating liquid tank 11.

[0069] A drive pump is installed on the inlet pipe 12 to drive the regulating liquid in the storage tank to flow to the regulating liquid tank 11, thereby increasing the volume of the regulating liquid in the regulating liquid tank 11 and decreasing the volume of the regulating liquid in the storage tank. This results in the gravity regulating component maintaining the same magnitude but increasing the center of gravity height, which in turn increases the overall center of gravity height of the door component.

[0070] When it is necessary to lower the height of the door assembly, the drain valve 14 opens, and the regulating liquid in the regulating liquid tank 11 is discharged into the storage tank through the drain pipe 13. This reduces the volume of the regulating liquid in the regulating liquid tank 11 and increases the volume of the regulating liquid in the storage tank. That is, the overall weight of the volume regulating assembly remains unchanged, but the center of gravity is lowered, meaning the overall height of the door assembly's center of gravity is lowered.

[0071] Example 3

[0072] This embodiment provides a door assembly and a dishwasher, and the structure of the door assembly and dishwasher provided in this embodiment is basically the same as that in Embodiment 1, except that the structure of the gravity adjustment assembly 1 is different.

[0073] In this embodiment, the gravity adjustment component 1 includes a gravity adjustment element and a driving element. The gravity adjustment element is slidably mounted on the door body 2, and the driving element can drive the gravity adjustment element to move along the extension direction of the door body 2, thereby changing the center of gravity position of the gravity adjustment element, that is, changing the center of gravity position of the door assembly.

[0074] Example 4

[0075] This embodiment provides an automatic door opening and closing method for a dishwasher, applicable to a dishwasher as described in any of the embodiments one to three.

[0076] The automatic door opening and closing method provided in this embodiment includes an automatic door opening method and an automatic door closing method. The automatic door opening method is used to realize the automatic opening of the door assembly, and the automatic door closing method is used to realize the automatic closing of the door assembly.

[0077] Specifically, the automatic door opening method includes: when a door opening command is received and the upper end of the door assembly is pushed open by a preset distance, an opening adjustment action is performed so that the gravitational torque formed by the gravity of the door assembly on the rotation axis of the door assembly is greater than the supporting torque applied to the door assembly by the hinge mechanism 4. The opening adjustment action includes increasing the magnitude of the gravity of the gravity adjustment component 1 and / or increasing the height of the center of gravity of the gravity adjustment component 1 so that the door assembly is in a downward deflection state.

[0078] The automatic door closing method includes: when a door closing command is received and the door assembly is in the open state, performing a door closing adjustment action to make the gravity torque less than the support torque, wherein the door closing adjustment action includes: reducing the gravity magnitude of the gravity adjustment assembly 1 and / or lowering the center of gravity height of the gravity adjustment assembly 1 to make the door assembly in an upward deflection state.

[0079] The automatic door opening and closing method provided in this embodiment can change the center of gravity height and / or gravity magnitude of the door assembly by adjusting the gravity adjustment component 1 and / or the center of gravity height. This makes the gravitational torque generated by the door assembly unequal to the supporting torque applied to the door assembly by the hinge mechanism 4. By adjusting the magnitude of the gravitational torque and the supporting torque, the automatic opening or closing operation of the door assembly can be realized, improving the automaticity of the dishwasher's door opening and closing and enhancing the user experience.

[0080] Example 5

[0081] This embodiment provides an automatic door opening and closing method for a dishwasher, and the automatic door opening and closing method provided in this embodiment can be applied to the dishwashers provided in Embodiment 1 and Embodiment 2.

[0082] The automatic door opening and closing method provided in this embodiment includes an automatic door opening method and an automatic door closing method. The automatic door opening method is used to realize the automatic opening of the door assembly, and the automatic door closing method is used to realize the automatic closing of the door assembly.

[0083] like Figure 2 As shown, specifically, the automatic door opening method includes: when receiving an opening command and the upper end of the door assembly opens a preset distance, performing an opening adjustment action to make the gravitational torque formed by the weight of the door assembly on the rotation axis of the door assembly greater than the supporting torque applied to the door assembly by the hinge mechanism 4. The opening adjustment action includes increasing the center of gravity height of the door assembly and / or increasing the weight of the door assembly.

[0084] Specifically, automatic door opening methods include:

[0085] Step S101: Receive the door opening command;

[0086] The dishwasher can be equipped with control buttons, allowing users to issue door-opening commands to the dishwasher's controller via these buttons; alternatively, it can be equipped with a voice recognition module that communicates with the dishwasher's controller, allowing users to send door-opening commands via voice; or, it can be equipped with a gesture recognition module, allowing users to send door-opening commands to the controller via specific gestures.

[0087] This embodiment does not restrict the specific implementation method of how the user sends the door opening command.

[0088] Step S102: Determine whether the door lock mechanism 5 is in the locked state. If not, proceed to step S103; if yes, proceed to step S104.

[0089] Before the door opens automatically, it is first determined whether the door lock mechanism 5 is in the locked state. Only after the door lock mechanism 5 is in the locked state will the door opening adjustment action continue to be executed. This avoids the problem of the door assembly suddenly flipping and falling due to the gravity of the adjustment mechanism door assembly when the door lock mechanism 5 is not locked, thus improving the safety of opening the door assembly.

[0090] Step S103: Issue an alarm to alert if the door is not opening properly;

[0091] Upon receiving the door opening command, if the door lock mechanism 5 is in the unlocked state, the execution of the door opening command will be interrupted, and an abnormal door opening alarm will be issued to remind the user to troubleshoot the abnormal state in time and ensure the normal use of the dishwasher.

[0092] In this embodiment, an alarm module can be installed in the dishwasher. The alarm module is communicatively connected to the controller, and the controller controls the alarm module to issue an alarm for abnormal door opening. The alarm module can be an audible and visual alarm, a buzzer alarm, or other existing modules capable of alarm function. This embodiment does not limit the type of alarm module or the specific presentation form of the alarm for abnormal door opening.

[0093] Step S104: Determine whether the liquid level in the regulating tank 11 has reached the first preset liquid level. If yes, proceed to step S105; otherwise, proceed to step S106.

[0094] If the liquid level in the regulating tank 11 is too high before the door assembly begins to rotate and open, the initial center of gravity of the door assembly will be too high or the gravity will be too great. This will result in a large torque difference between the gravitational torque and the supporting torque provided by the hinge mechanism 4. In this case, after the upper part of the door assembly is pushed open, the door assembly will fall rapidly due to the excessive downward flipping torque, reducing the safety and reliability of the door assembly's opening. To solve the problem of the door assembly falling too quickly after opening, in this embodiment, it is determined whether the liquid level in the regulating tank 11 has reached the first preset liquid level. This prevents the door assembly from having excessive gravity or a high center of gravity before rotating and opening, improving the safety and reliability of the door assembly's opening and reducing the probability of damage to the door assembly.

[0095] In this embodiment, the regulating liquid tank 11 has a balanced liquid level. At the balanced liquid level, the gravitational torque generated by the door assembly is equal to the supporting torque provided by the hinge mechanism 4 to the door assembly. That is, when the liquid level in the regulating liquid tank 11 is at the balanced liquid level, the door assembly can be suspended to any opening angle after being opened. In other words, the first preset liquid level is higher than the balanced liquid level.

[0096] Step S105: Drain the regulating liquid from the regulating liquid tank 11 so that the liquid level in the regulating liquid tank 11 is not higher than the second preset liquid level;

[0097] If there is too much regulating liquid in the regulating liquid tank 11 before the door assembly rotates to open, the liquid capacity in the regulating liquid tank 11 is changed by draining the regulating liquid, thereby reducing the center of gravity height and gravity of the door assembly when it is not open.

[0098] In this embodiment, the second preset liquid level is preferably less than or equal to the equilibrium liquid level.

[0099] Step S106: The ejection mechanism 6 pushes the upper end of the door assembly open by a preset distance.

[0100] Since the door assembly is typically vertically positioned when closed, it is difficult to rotate if the upper part of the door assembly is not pushed open, even if the magnitude of its weight or the height of its center of gravity is changed. Therefore, in this embodiment, an ejector mechanism 6 is used to push the upper part of the door assembly away from the body 3 by a predetermined distance, allowing the door assembly to move to an inclined state under the action of the ejector mechanism 6. This allows the weight of the door assembly to generate a gravitational torque that can cause the door assembly to flip downwards.

[0101] It is understood that the ejector mechanism 6 can adopt any existing structural form applicable to dishwashers, and dishwashers with both the ejector mechanism 6 and the door lock mechanism 5 are existing configurations. The specific structures of the door lock mechanism 5 and the ejector mechanism 6 can be set with reference to existing technologies, which is not the focus of this embodiment and will not be elaborated here. At the same time, the ejector mechanism 6 and the door lock mechanism 5 can be set separately or integrated.

[0102] Step S107: Perform the door opening adjustment action;

[0103] Step S108: End the automatic door opening program.

[0104] In this embodiment, the door opening adjustment action includes: introducing adjustment liquid into the adjustment liquid tank 11 at a liquid inlet speed not exceeding a first preset speed, so as to increase the gravity of the door assembly and increase the center of gravity height of the door assembly, thereby causing the door assembly to rotate and open at a preset angle.

[0105] When the upper part of the door assembly is pushed open, regulating liquid is introduced into the regulating liquid tank 11 to increase the capacity of the regulating liquid in the tank 11, thereby increasing the gravity and center of gravity of the door assembly. When the liquid level in the regulating liquid tank 11 is higher than the equilibrium liquid level, the gravitational torque generated by the door assembly is greater than the supporting torque generated by the hinge mechanism 4, causing the door assembly to flip downward.

[0106] During the process of introducing the regulating liquid, the liquid inlet speed is controlled to be lower than or equal to the first preset speed. This avoids the problem that excessive liquid inlet speed will cause the door assembly to fall too quickly due to the increased gravity of the door assembly. This allows the door assembly to slowly rotate and open while gravity increases, improving the safety and reliability of the door assembly opening and reducing the probability of the door assembly suddenly falling.

[0107] Preferably, during the process of introducing the conditioning liquid, the liquid is introduced at a constant speed of a first preset speed to improve control convenience and reduce control difficulty and cost.

[0108] In this embodiment, the flow of regulating liquid into the regulating liquid tank 11 can be stopped after a first preset time. During this first preset time, the angle at which the door assembly rotates open can be less than or equal to a preset angle.

[0109] Understandably, if the rotation angle of the door assembly is less than the preset angle, although the liquid inlet stops, the door assembly will still flip open to the preset angle because the gravitational torque is greater than the supporting torque. If the rotation angle of the door assembly is equal to the preset angle, the door assembly may rotate to the preset angle exactly when the regulating liquid is stopped, or the regulating liquid may be stopped after the door assembly has rotated to the preset angle.

[0110] In another embodiment, the timing of stopping the flow of regulating liquid can be controlled by determining whether the door assembly has reached a preset angle. That is, when it is determined that the door assembly has reached the preset angle, the flow of regulating liquid into the regulating liquid tank 11 is stopped.

[0111] The door opening method provided in this embodiment can change the magnitude of the gravity and the height of the center of gravity of the door assembly by introducing regulating liquid into the regulating liquid tank 11, thereby enabling the door assembly to open automatically and improving the automaticity of the dishwasher door opening. Furthermore, by controlling the inflow rate of the regulating liquid into the regulating liquid tank 11, the speed at which the door assembly rotates and opens can be controlled, allowing the door assembly to open slowly and reducing the problem of the door assembly opening too quickly or suddenly falling, thus improving the safety and reliability of the door assembly opening. By controlling the liquid level in the regulating liquid tank 11 before the door assembly rotates and opens, the sudden fall of the door assembly after being pushed open is prevented, further improving the opening safety of the door assembly.

[0112] The automatic door closing method provided in this embodiment includes: when a door closing command is received and the door assembly is in an open state, performing a door closing adjustment action to make the gravitational torque less than the supporting torque. The door closing adjustment action includes lowering the center of gravity height of the door assembly and / or reducing the gravity of the door assembly.

[0113] Specifically, such as Figure 3 As shown, the automatic door closing methods include:

[0114] Step S201: Receive the door closing command;

[0115] The dishwasher can be equipped with control buttons, allowing users to send a door-closing command to the dishwasher's controller via these buttons; alternatively, it can be equipped with a voice recognition module that communicates with the dishwasher's controller, allowing users to send a door-closing command via voice; or, it can be equipped with a gesture recognition module, allowing users to send a door-closing command to the controller via specific gestures.

[0116] This embodiment does not restrict the specific implementation method of how the user sends the door closing command.

[0117] Step S202: Determine whether the door lock mechanism 5 is in the locked state. If yes, proceed to step S203; otherwise, proceed to step S204.

[0118] Before performing the closing action, it is first determined whether the door lock mechanism 5 is in the locked state. If the door lock mechanism 5 is in the locked state, it means that the door assembly is not open and the closing action cannot be performed. If the door lock mechanism 5 is in the unlocked state, it means that the door assembly is open and the closing action can be performed.

[0119] Step S203: Issue the first door closing abnormality alarm;

[0120] When a door closing command is received and the current door lock mechanism 5 is in the locked state, it indicates that the door closing command is abnormal or the dishwasher is in an abnormal state. At this time, the controller controls the alarm module on the dishwasher to issue a door closing abnormality alarm to remind the user to check the abnormal state and troubleshoot it.

[0121] In this embodiment, an alarm module can be installed in the dishwasher. The alarm module is communicatively connected to the controller, and the controller controls the alarm module to issue an alarm for abnormal door closing. The alarm module can be an audible and visual alarm, a buzzer alarm, or other existing modules capable of alarm function. This embodiment does not limit the type of alarm module or the specific presentation form of the alarm for abnormal door closing.

[0122] Preferably, the alarm formats for the first door closing abnormal alarm and the door opening abnormal alarm are different. If an audible and visual alarm is used, the warning light emitted by the door opening abnormal alarm and the first door closing abnormal alarm can be controlled to be different. If a buzzer alarm is used, the alarm sound emitted can be controlled to be different. If a text alarm is used, the text information displayed can be controlled to be different, so as to facilitate users to identify different alarm information.

[0123] Step S204: Determine whether the liquid level in the regulating tank 11 has reached the third preset liquid level. If not, proceed to step S205. If yes, proceed to step S206.

[0124] Before performing the door closing adjustment action, it is first determined whether the liquid level in the regulating liquid tank 11 has reached the third preset liquid level. If it is lower than the third preset liquid level, it means that the liquid level in the regulating liquid tank 11 is too low. At this time, the liquid level in the regulating liquid tank 11 may not meet the discharge requirements required to perform the door closing adjustment action; or although the liquid level in the regulating liquid tank 11 can close the door assembly by discharge, the closing speed of the door assembly is relatively slow due to the small regulating liquid capacity, making it difficult to achieve the force required for the door assembly to close and lock with the door lock mechanism 5, resulting in difficulty in locking the door lock mechanism 5.

[0125] Therefore, in this embodiment, before performing the door closing adjustment action, it is first detected whether the liquid level in the regulating liquid tank 11 has reached the third preset liquid level, and it is determined whether the liquid capacity in the regulating liquid tank 11 meets the closing requirements of the door assembly. This ensures that the door assembly can be reliably closed and locked with the door lock mechanism 5 by discharging the regulating liquid in the regulating liquid tank 11, thereby improving the door closing reliability.

[0126] Furthermore, the third preset liquid level is higher than the equilibrium liquid level.

[0127] Step S205: Pour regulating liquid into regulating liquid tank 11 until the liquid level in regulating liquid tank 11 is higher than the fourth preset liquid level;

[0128] When the amount of regulating liquid in the regulating liquid tank 11 is low, regulating liquid is introduced into the regulating liquid tank 11 so that the liquid capacity in the regulating liquid tank 11 meets the discharge requirements for closing the valve.

[0129] It is understandable that when a door closing command is received, the door assembly may be in a fully open state or in a partially open state. If the door assembly is in a partially open state, the door assembly will continue to open from the current open state to the maximum open state when regulating liquid is injected into the regulating liquid tank 11.

[0130] The fourth preset liquid level can be equal to or higher than the third preset liquid level.

[0131] Step S206: Determine whether the ejection mechanism 6 is in the ejection state. If yes, proceed to step S207; otherwise, proceed to step S208.

[0132] Step S207: Restore the ejection mechanism 6 from the ejection state to the initial state;

[0133] During the automatic closing process, if the ejector mechanism 6 is in the ejector state, the extended push rod of the ejector mechanism 6 will obstruct the closing of the door assembly, preventing the door assembly from closing completely. Therefore, before performing the closing adjustment action, it is necessary to determine whether the ejector mechanism 6 is in the ejector state. If so, the ejector mechanism 6 is reset to its initial state to avoid the setting of the ejector mechanism 6 affecting the automatic closing of the door assembly, thereby improving the reliability of the door assembly closing and reducing the probability of failure.

[0134] In this embodiment, the determination of whether the ejector mechanism 6 is in the ejector state is placed after the determination of the liquid level in the regulating tank 11. In other embodiments, the step of determining whether the ejector mechanism 6 is in the ejector state can also be placed before the determination of the liquid level in the regulating tank 11.

[0135] Step S208: Perform the door closing adjustment action;

[0136] Performing the door closing adjustment action includes: draining the adjustment liquid in the adjustment liquid tank 11 at a drainage speed not less than the second preset speed to completely close the door assembly.

[0137] During the drainage process, the drainage speed is controlled to be no less than the second preset speed. If the drainage speed is too slow, the impact force generated when the door assembly closes will be too small to achieve the locking of the door lock mechanism 5. Controlling the drainage speed to be no less than the second preset speed can increase the impact force when the door assembly closes and improve the closing reliability of the door assembly.

[0138] Furthermore, the drainage speed is controlled to be no greater than the third preset value, and the regulating tank 11 is kept in the drainage state or just ends at the moment the door assembly is fully closed, so as to better ensure the impact force at the moment the door assembly closes.

[0139] Preferably, after the regulating liquid tank 11 is drained, the liquid level in the regulating liquid tank 11 is preferably lower than the first preset liquid level, so as to avoid too much regulating liquid remaining in the regulating liquid tank 11, which would require draining before the next automatic door opening, thus improving the efficiency of automatic door opening and closing.

[0140] More preferably, after the regulating tank 11 has finished draining, the liquid level in the regulating tank 11 is equal to the equilibrium liquid level, so that when the user manually opens the door, the door assembly can be suspended to any opening angle.

[0141] Step S209: Determine whether the door lock mechanism 5 is in the locked state. If not, proceed to step S210; if yes, proceed to step S211.

[0142] Step S210: Issue a second door closing abnormality alarm;

[0143] Step S211: End the automatic door closing program.

[0144] When the door assembly is fully closed, due to abnormality of the door lock mechanism 5 or insufficient closing force, the door lock mechanism 5 may not be locked. The door assembly may be accidentally opened, affecting the safety of the dishwasher. In this case, by checking whether the door lock mechanism 5 is locked, the problem of the door assembly not closing properly can be avoided, thus improving the safety and reliability of the door assembly closing.

[0145] The form of the second door closing abnormality alarm can be the same as or different from that of the first door closing abnormality alarm. This embodiment does not limit the specific display form of the second door closing abnormality alarm.

[0146] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. An automatic door opening and closing method for a dishwasher, the dishwasher comprising a body (3) and a door assembly, the lower end of the door assembly being rotatably connected to the body (3) via a hinge mechanism (4), the upper end of the door assembly being connectable to the body (3) via a door lock mechanism (5), and the top end of the body (3) having an ejection mechanism (6) capable of opening the door assembly, characterized in that, The center of gravity height and / or magnitude of gravity of the door assembly can be adjusted, and the automatic door opening and closing method includes: When a door opening command is received and the upper end of the door assembly is pushed open by the push-out mechanism (6) by a preset distance, a door opening adjustment action is performed so that the gravitational torque formed by the weight of the door assembly on the rotation axis of the door assembly is greater than the supporting torque applied to the door assembly by the hinge mechanism (4). The door opening adjustment action includes increasing the height of the center of gravity of the door assembly and / or increasing the weight of the door assembly. And / or, upon receiving a closing command and when the door assembly is in the open state, a closing adjustment action is performed to make the gravitational torque less than the support torque, the closing adjustment action including lowering the center of gravity height of the door assembly and / or reducing the gravity of the door assembly.

2. The automatic door opening and closing method according to claim 1, characterized in that, The door assembly includes a door body (2) and a regulating liquid tank (11) disposed on the door body (2), the regulating liquid tank (11) being used to store regulating liquid; The door opening adjustment action includes: injecting the adjustment liquid into the adjustment liquid tank (11) to increase the gravity of the door assembly and increase the center of gravity height of the door assembly; The door closing adjustment action includes: discharging part of the adjustment liquid in the adjustment liquid tank (11) from the door assembly to reduce the weight of the door assembly and lower the center of gravity of the door assembly.

3. The automatic door opening and closing method according to claim 2, characterized in that, When performing the door opening adjustment action, the adjustment liquid is injected into the adjustment liquid tank (11) at a liquid inlet speed less than or equal to the first preset speed.

4. The automatic door opening and closing method according to claim 2, characterized in that, After receiving the door opening command and before performing the door opening adjustment action, it is determined whether the liquid level in the regulating liquid tank (11) has reached the first preset liquid level. If so, part of the regulating liquid in the regulating liquid tank (11) is discharged from the door assembly until the liquid level in the regulating liquid tank (11) is lower than or equal to the second preset liquid level, and then the door opening adjustment action is performed.

5. The automatic door opening and closing method according to claim 2, characterized in that, After receiving the closing command and before performing the closing adjustment action, it is determined whether the liquid level in the regulating liquid tank (11) has reached the third preset liquid level. If not, the regulating liquid is injected into the regulating liquid tank (11) until the liquid level reaches the fourth preset liquid level, and then the closing adjustment action is performed. The fourth preset liquid level is equal to or higher than the third preset liquid level.

6. The automatic door opening and closing method according to claim 2, characterized in that, When performing the closing adjustment action, the adjustment liquid is discharged at a discharge rate greater than or equal to the second preset speed.

7. The automatic door opening and closing method according to claim 6, characterized in that, When performing the door closing adjustment action, the drainage speed is controlled so that when the door assembly is fully closed, the adjustment liquid in the adjustment tank (11) is just drained or the adjustment liquid is still present in the adjustment tank (11).

8. The automatic door opening and closing method according to claim 7, characterized in that, When the closing adjustment action is completed, the liquid level in the adjustment tank (11) reaches the equilibrium liquid level, which is the liquid level of the adjustment liquid in the adjustment tank (11) when the gravitational torque is equal to the support torque.

9. The automatic door opening and closing method according to claim 5, characterized in that, When performing the door closing adjustment action, the adjustment liquid in the adjustment liquid tank (11) is discharged into the washing circulation water path of the dishwasher.

10. The automatic door opening and closing method according to any one of claims 1-9, characterized in that, After receiving the door closing command and before performing the door closing adjustment action, determine whether the door lock mechanism (5) of the dishwasher is in the locked state. If so, issue the first door closing abnormal alarm. And / or, when the door closing adjustment action is completed, detect whether the door lock mechanism (5) of the dishwasher is in the locked state; if not, issue a second door closing abnormal alarm. And / or, after receiving the door opening command and before performing the door opening adjustment action, determine whether the door lock mechanism (5) of the dishwasher is in the locked state; if not, issue a door opening abnormality alarm.

11. The automatic door opening and closing method according to any one of claims 1-9, characterized in that, Before receiving the door opening command and before the ejection mechanism (6) extends, determine whether the door lock mechanism (5) of the dishwasher is in the locked state. If so, control the ejection mechanism (6) to eject. And / or, before receiving the closing command and executing the closing adjustment action, determine whether the ejection mechanism (6) is in the ejection state. If so, control the ejection mechanism (6) to return to the initial state before executing the closing adjustment action.

12. A dishwasher, comprising a body (3) and a door assembly, the lower end of the door assembly being rotatably connected to the body (3) via a hinge mechanism (4), the upper end of the door assembly being connectable to the body (3) via a door lock mechanism (5), and the top end of the body (3) having an ejection mechanism (6) capable of opening the door assembly, characterized in that, The door assembly includes a door body (2) and a gravity adjustment component (1) disposed on the door body (2). The gravity adjustment component (1) is capable of adjusting the center of gravity height and / or gravity magnitude of the door body (2). The dishwasher uses the automatic door opening and closing method as described in any one of claims 1-11 for automatic door opening and closing method control.

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