A drawer-type dishwasher and its working method

Abstract

The present invention discloses a drawer - type dishwasher and its working method, relating to the field of dishwashers. Currently, for a drawer - type dishwasher to enable the inner cavity of the dishwasher to be pulled out and pushed in, the required connecting pipelines are very long, and the long pipelines are prone to a large amount of water accumulation. The present invention includes a locking device for restricting the pulling out of the inner cavity of the dishwasher. The drainage assembly includes a first drain pipe, a drain pipe connection assembly, and a second drain pipe; the drain pipe connection assembly includes a drain pipe connector and a drainage pump; the connection between the first drain pipe and the drain pipe connection assembly is a plug - and - play type; the water outlet of the second drain pipe is arranged backward, and the water inlet of the drain pipe connection assembly is arranged forward. In the technical solution of the present invention, the connection between the first drain pipe and the drain pipe connection assembly is a plug - and - play type. The first drain pipe is directly plugged into the drain pipe connection assembly backward, with a short pipeline, thereby effectively reducing the amount of accumulated water; reducing the dampness and odor caused by a large amount of accumulated water. The locking device prevents the inner cavity of the dishwasher from being pulled out during operation.

Description

Technical Field

[0001] The present invention relates to the field of dishwashers, and particularly to a drawer - type dishwasher. Background Art

[0002] Currently, there is always a pipeline connection between the inner tank of the dishwasher and the drain pipe. Especially for drawer - type dishwashers, in order to enable the inner tank of the dishwasher to be pulled out and pushed in, the required connecting pipeline is very long. The water in the pipeline cannot be drained completely, and the long pipeline is prone to a large amount of water accumulation. The humid inner - tank environment will cause bacteria to breed, affecting the hygiene of the inner tank. At the same time, after the dishwasher has been idle for a long time, the accumulated water will stink, affecting its use. Summary of the Invention

[0003] The technical problem to be solved and the technical task proposed by the present invention are to improve and refine the existing technical solution, and provide a drawer - type dishwasher to achieve the purpose of reducing the length of the connecting pipeline. For this purpose, the present invention adopts the following technical solutions.

[0004] A drawer - type dishwasher includes a dishwasher cabinet, a dishwasher inner tank that can move back and forth, a water - inlet assembly for water inlet, a drainage assembly for drainage, a water - spraying assembly for water spraying, and a heating plate. The dishwasher inner - tank assembly is provided with a washing cavity. The water - inlet assembly includes a water inlet pipe communicating with the washing cavity and a water inlet valve for controlling the on - off of the water inlet pipe. The water - spraying assembly includes a spray pump and a spray arm. A plurality of water - spraying holes are provided on the spray arm. The spray pump pumps water into the spray arm, and as the water sprays out from the water - spraying holes, it drives the spray arm to rotate. It also includes a locking device for restricting the pulling - out of the dishwasher inner tank. The drainage assembly includes a first drain pipe provided at the bottom of the dishwasher inner tank, a drain - pipe connection assembly matching the first drain pipe, and a second drain pipe provided with a drain valve and connected to the drain - pipe connection assembly. The drain - pipe connection assembly is provided on the dishwasher cabinet and includes a drain - pipe connector and a drain pump connected to the drain - pipe connector. The connection between the first drain pipe and the drain - pipe connection assembly is a plug - and - play type. The outlet of the second drain pipe is arranged backward, and the inlet of the drain - pipe connection assembly is arranged forward. During the process of pushing the dishwasher inner tank into the dishwasher cabinet, the first drain pipe moves backward with the dishwasher inner tank until the outlet of the second drain pipe is docked with the inlet of the drain - pipe connection assembly, so that the inner cavity of the dishwasher is communicated with the second drain pipe through the first drain pipe and the drain - pipe connection assembly.

[0005] The dishwasher is in the working state, and the locking device is in the locked state to prevent the inner tank of the dishwasher from being pulled out; when the dishwasher finishes spraying and needs to drain water, the spray pump and the heating plate stop working, the drain valve is started first to make the second drain pipe in a through state, and then the drain pump is powered on and started for strong drainage. After the drain pump runs for a set time, it stops running and the drain valve is closed to complete the drainage; only when the dishwasher finishes working is the locking device allowed to be in the unlocked state to allow the inner tank of the dishwasher to be pulled out. When the drawer-type dishwasher is in the working state, the first drain pipe and the drain pipe connection component are in a connected state. After the drawer-type dishwasher stops working and the inner tank of the dishwasher is in the pulled-out state, the first drain pipe and the drain pipe connection component are in a disconnected state. In this technical solution, the first drain pipe and the drain pipe connection component are connected in a pluggable manner. The first drain pipe is directly plugged into the drain pipe connection component backward, the pipeline is short, and there is no need for a hose connection between the first drain pipe and the drain pipe connection component, reducing the length of the drainage channel, thereby effectively reducing the accumulated water volume. It alleviates the dampness and stench caused by a large amount of accumulated water. The locking device is used for locking, which can prevent the user from pulling out the inner tank of the dishwasher when there is still water in the inner tank of the dishwasher before the work is completed, resulting in the disconnection of the first drain pipe and the drain pipe connector and the accumulated water in the inner tank of the dishwasher flowing out from the first drain pipe, improving the reliability of the work; the locking device can be locked in a mechanical way, such as a bolt, etc., or an electric control method can also be adopted, such as using a solenoid valve, etc. When the dishwasher needs to drain water, the drain pump works to quickly suck the water in the inner tank to the drain pipe connection component and discharge it through the second drain pipe. Using the drain pump can suck the water as quickly as possible, further reducing the accumulated water volume in the pipeline.

[0006] As a preferred technical measure: the drain pipe connector is fixedly connected above the bottom plate of the dishwasher box body through a connector. The connector can be a screw, etc. The drain pipe connector can be connected to the bottom plate and / or the side plate of the box body through the connector to fix it on the box body of the dishwasher. The drain pipe connector is provided with a water inlet, a water outlet and a drain pump connection port; the water inlet of the drain pipe connector is arranged opposite to the drain pump connection port, and the water outlet of the drain pipe connector is arranged perpendicular to the water inlet and the drain pump connection port; the water inlet of the drain pipe connector is the water inlet of the drain pipe connection component, which is butted against the water outlet of the first drain pipe; the water outlet of the drain pipe connector is butted against the water inlet of the second drain pipe. The drain pipe connector is provided with three connection ports, and its structure is compact, which is beneficial to reducing the volume of the entire drainage system and further beneficial to reducing the accumulated water volume in the pipeline.

[0007] As a preferred technical measure: The drain pipe connector is provided with an "n"-shaped bracket. The bracket includes a front plate, a left plate and a right plate, and the rear side of the bracket is open; The bracket and the drain pipe connector are of an integral structure; The rear sides of the left plate and the right plate of the bracket are fixedly connected to the dishwasher cabinet through connectors; The drain pump connection port and the drain pump are located in the semi-enclosed cavity formed by the front plate, the left plate and the right plate of the bracket. The water inlet of the drain pipe connector extends forward and outward from the front plate of the bracket, and the water outlet of the drain pipe connector extends outward from the left plate or the right plate of the bracket. Providing the bracket can reliably fix the drain pipe connector on the cabinet, improve the structural stability, avoid deformation, displacement, etc. caused by repeated plugging and unplugging with the first drain pipe, and improve the working reliability.

[0008] As a preferred technical measure: A support plate is provided between the bottom of the bracket and the bottom of the dishwasher cabinet. Providing a support plate at the bottom of the bracket, the split structure can reduce the volume of the bracket and lower the processing cost. Providing the support plate can form a fulcrum and increase the distance between the bracket and the bottom of the cabinet, so that there is enough installation space for the drain pump.

[0009] As a preferred technical measure: The water inlet of the drain pipe connector is provided with a horn-shaped guiding part that is large at the front and small at the rear. There are a plurality of axially arranged reinforcing ribs between the outer periphery of the guiding part and the front plate of the bracket. The horn-shaped guiding part that is large at the front and small at the rear has the function of guiding the insertion of the first drain pipe, and facilitates the insertion of the first drain pipe into the drain pipe connector.

[0010] As a preferred technical measure: The first drain pipe includes a horizontal connecting pipe connected to the drain pipe connection assembly and a vertical connecting pipe connected to the dishwasher inner tank. The lower end of the vertical connecting pipe is closed to form a tapered hole that is large at the top and small at the bottom. The horizontal connecting pipe is connected to the tapered hole. The front end cross-section of the horizontal connecting pipe is arc-shaped. The horizontal connecting pipe is lower than the vertical connecting pipe, and the front of the horizontal connecting pipe is higher than the rear. There is a reinforcing rib at the connection between the horizontal connecting pipe and the vertical connecting pipe. The tapered hole that is large at the top and small at the bottom has a confluence function to avoid water accumulation. The head of the horizontal connecting pipe is arc-shaped to avoid forming dead corners, so that the water can flow down smoothly without accumulating; and the arrangement of the horizontal connecting pipe with the front higher than the rear enables the water to flow out as soon as possible.

[0011] As a preferred technical measure: The vertical connecting pipe is vertically arranged. The top of the vertical connecting pipe is a tray, and there is a connection hole below the tray. The diameter of the tray is larger than the diameter of the connection hole. The inner wall of the connection hole is provided with threads for connecting with the dishwasher inner tank. The edge of the tray abuts upward against the bottom of the dishwasher inner tank, and the connection hole is threadedly connected to the connector passing through the bottom of the dishwasher inner tank, so as to reliably connect the first drain pipe to the dishwasher inner tank. And because the diameter of the tray is larger than the diameter of the connection hole, the leaked water can flow back through the tray, reducing the possibility of water leakage.

[0012] As a preferred technical measure: the first drain pipe is a rigid part, the water outlet of the first drain pipe is a male port, and the water inlet of the drain pipe connection component is a female port; a plurality of annular sealing grooves are formed on the male port, and sealing rings are embedded in the sealing grooves. It is convenient to insert and avoid water leakage.

[0013] Another object of the present invention is to provide a working method of a drawer-type dishwasher.

[0014] A working method of a drawer-type dishwasher is that during the operation of the dishwasher, it includes one or more cleaning steps, a ventilation step, and an unlocking step; after all the cleaning steps are completed, the ventilation step is carried out. After the ventilation step is completed, it enters the unlocking step to enable the inner cavity of the dishwasher to be pulled out from the dishwasher cabinet; the cleaning steps include:

[0015] 1) The drain valve and the drain pump are turned on simultaneously; they are turned off after a set time.

[0016] 2) The water inlet valve is turned on with a delay to allow water to enter the washing cavity through the water inlet pipe.

[0017] 3) After the water injection is completed, the spray pump works, and the spray arm sprays. During the spraying process, the water is heated by the heating plate to raise the temperature to a set range and maintain the temperature; the heating plate needs to stop working immediately after the spraying ends.

[0018] 4) After the spraying ends, the drain valve is started first to make the second drain pipe in a through state, and then the drain pump is powered on and started for strong drainage. After the drain pump runs for a set time, it stops running, and the drain valve is closed to complete the drainage.

[0019] As a preferred technical measure: the dishwasher is provided with a variety of cleaning work modules; the user selects the corresponding cleaning work module according to needs; the cleaning work module includes a first cleaning work module and a second cleaning work module with a working duration longer than that of the first cleaning work module; the setting steps of the first cleaning work module include:

[0020] A) The first dishwashing:

[0021] The drain valve and the drain pump are turned on simultaneously, and are turned off after reaching the set time. The water inlet valve is turned on with a delay to let water in; the water inflow is determined according to the selected cleaning degree; the cleaning degrees are gentle wash, standard wash, and strong wash.

[0022] After the water injection is completed, the spray pump works, and the spray arm starts to swing and spray for cleaning. During the spraying process, the water is heated by the heating plate to raise the temperature to 70°C - 75°C. During this process, heating stops after reaching the specified temperature, and heating continues after the temperature drops back to 60°C - 65°C; the heating plate needs to stop working immediately after the spraying ends.

[0023] After running for the set time, the spray pump and the heating plate stop working simultaneously. At this time, the countdown pauses. After the drain valve operates first, the drain pump is turned on and stops operating and closes after reaching the set time.

[0024] B) Second dishwashing:

[0025] After the first dishwashing is completed, it automatically enters the water inlet for the second dishwashing. The water inlet volume is determined according to the selected cleaning degree of the water inlet volume.

[0026] After the water inlet is completed, the spray pump works, and the spray arm swings and sprays for cleaning again. At the same time, the heating plate continues to heat the water temperature to 70°C - 75°C and stops heating after reaching the specified temperature during this process.

[0027] After running for the set time, the spraying ends. After the drain valve operates first, the drain pump is turned on and stops operating and closes after reaching the set time.

[0028] C) Third dishwashing:

[0029] After the second dishwashing is completed, it automatically enters the water inlet for the third dishwashing. The water inlet volume is determined according to the selected cleaning degree of the water inlet volume.

[0030] After the water inlet is completed, the spray pump works, and the spray arm swings and sprays for cleaning again. At the same time, the heating plate continues to heat the water temperature to 70°C - 75°C and stops heating after reaching the specified temperature during this process.

[0031] After running for the set time, the spraying ends. After the drain valve operates first, the drain pump is turned on and stops operating and closes after reaching the set time.

[0032] The ventilation system is turned on, and the ventilation pump runs until the set time and stops.

[0033] After the ventilation ends, the electromagnetic door lock used as a locking device is closed; the electromagnetic door lock is in the unlocked state, allowing the inner tank of the dishwasher to be pulled out.

[0034] Beneficial effects: In this technical solution, the first drain pipe and the drain pipe connection component are of a pluggable connection. The first drain pipe is directly plugged into the drain pipe connection component backward. The pipeline is short, and there is no need for a hose connection between the first drain pipe and the drain pipe connection component, reducing the length of the drainage channel. Therefore, the accumulated water volume can be effectively reduced, and the dampness and odor caused by a large amount of accumulated water can be alleviated.

[0035] The locking device is used for locking, which can prevent the user from accidentally pulling out the inner tank of the dishwasher when there is still water in the inner tank of the dishwasher before the work is completed, resulting in the disconnection of the first drain pipe and the drain pipe connector and the accumulated water in the inner tank of the dishwasher flowing out from the first drain pipe, effectively improving the safety of the work. Description of the Drawings

[0036] Figure 1 It is a schematic structural view in a viewing direction of the drainage component of the present invention.

[0037] Figure 2 It is another schematic structural view in a viewing direction of the drainage component of the present invention.

[0038] Figure 3 It is a schematic blasting structure view of the drainage component of the present invention.

[0039] Figure 4 It is a schematic structural view in a viewing direction of the drainage component of the present invention assembled on the inner liner of the dishwasher.

[0040] Figure 5 It is another schematic structural view in a viewing direction of the drainage component of the present invention assembled on the inner liner of the dishwasher.

[0041] Figure 6 is Figure 5 The A-A sectional structural view of.

[0042] Figure 7 It is a schematic view of the moving route of the inner liner of the dishwasher of the present invention.

[0043] Figure 8 It is a three-dimensional structural view of the inner liner of the dishwasher of the present invention after adding a spray pump, a heating plate and a first drain pipe.

[0044] Figure 9 It is a top view structural view of the inner liner of the dishwasher of the present invention after adding a spray pump, a heating plate and a first drain pipe.

[0045] Figure 10 It is a schematic structural view of the present invention.

[0046] Figure 11 It is a flow chart of the present invention.

[0047] Figure 12 It is a cleaning flow chart of the present invention.

[0048] In the figure: 1. Inner liner of the dishwasher; 2. First drain pipe; 201. Horizontal connecting pipe; 202. Vertical connecting pipe; 203. Tray; 204. Sealing groove; 3. Second drain pipe; 4. Drain pipe connector; 401. Bracket; 402. Guide part; 5. Drain pump; 6. Drain valve; 7. Dishwasher cabinet; 8. Spray pump; 9. Heating plate. Detailed implementation manners

[0049] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings of the specification.

[0050] Such as Figures 1-10As shown in the figure, the present invention includes a dishwasher cabinet 7, a dishwasher inner container 1 that can move back and forth, a water inlet assembly for water inlet, a drainage assembly for drainage, a water spraying assembly for water spraying, a heating plate 9 for heating, and a locking device for restricting the pulling out of the dishwasher inner container 1; the dishwasher inner container 1 assembly is provided with a washing cavity; the water inlet assembly includes a water inlet pipe communicating with the washing cavity and a water inlet valve for controlling the on / off of the water inlet pipe, and the water spraying assembly includes a spray pump 8 and a spray arm; a plurality of water spraying holes are provided on the spray arm, and the spray pump 8 pumps water into the spray arm, and as the water sprays out from the water spraying holes, it drives the spray arm to rotate; the drainage assembly includes a first drainage pipe 2 provided at the bottom of the dishwasher inner container 1, a drainage pipe connection assembly matching with the first drainage pipe 2, and a second drainage pipe 3 provided with a drainage valve 6 connected to the drainage pipe connection assembly; the drainage pipe connection assembly is provided on the dishwasher cabinet 7 and includes a drainage pipe connector 4 and a drainage pump 5 connected to the drainage pipe connector 4; the connection between the first drainage pipe 2 and the drainage pipe connection assembly is a pluggable connection; the water outlet of the second drainage pipe 3 is arranged backward, and the water inlet of the drainage pipe connection assembly is arranged forward; during the process of pushing the dishwasher inner container 1 into the dishwasher cabinet 7, the first drainage pipe 2 moves backward with the dishwasher inner container 1 until the water outlet of the second drainage pipe 3 is docked with the water inlet of the drainage pipe connection assembly, so that the inner cavity of the dishwasher communicates with the second drainage pipe 3 through the first drainage pipe 2 and the drainage pipe connection assembly.

[0051] When the dishwasher is in the working state, the locking device is in the locked state to prevent the pulling out of the dishwasher inner container 1; when the dishwasher finishes spraying and needs to drain water, the spray pump 8 and the heating plate 9 stop working, the drainage valve 6 is first started to make the second drainage pipe 3 in a through state, and then the drainage pump 5 is powered on and started for strong drainage. After the drainage pump 5 runs for a set time, it ends the operation, closes the drainage valve 6, and completes the drainage; only when the dishwasher work is over is the locking device allowed to be in the unlocked state to allow the pulling out of the dishwasher inner container 1.

[0052] When the dishwasher needs to drain water, the drainage pump 5 works to quickly suck the water in the inner container to the drainage pipe connection assembly and discharge it through the second drainage pipe 3, and the drainage pump 5 can suck the water as quickly as possible to further reduce the accumulated water volume in the pipeline.

[0053] The locking device is used for locking, which can prevent the user from pulling out the dishwasher inner container 1 when the work is not completed and there is still water in the dishwasher inner container 1, resulting in the separation of the first drainage pipe 2 from the drainage pipe connector 4 and the accumulated water in the dishwasher inner container 1 flowing out from the first drainage pipe 2, improving the reliability of the work; the locking device can be locked in a mechanical way, such as a bolt, etc., or an electric control method can be adopted, such as using a solenoid valve, etc. In this embodiment, the locking device adopts an electromagnetic door lock to achieve automatic control and further improve the safety of the work.

[0054] In order to quickly drain the water completely: The drain pipe connection assembly includes a drain pipe connector 4 and a drain pump 5 connected to the drain pipe connector 4. When the dishwasher needs to drain water, the drain pump 5 operates to quickly suck the water in the inner tank to the drain pipe connection assembly and discharge it through the second drain pipe 3, so that the drain pump 5 can suck the water as quickly as possible, further reducing the accumulated water volume in the pipeline.

[0055] Among them, the drain pipe connector 4 is provided with a water inlet, a water outlet and a drain pump 5 connection port; the water inlet of the drain pipe connector 4 is arranged opposite to the drain pump 5 connection port, and the water outlet of the drain pipe connector 4 is arranged perpendicular to the water inlet and the drain pump 5 connection port; the water inlet of the drain pipe connector 4 is the water inlet of the drain pipe connection assembly, which is butted against the water outlet of the first drain pipe 2; the water outlet of the drain pipe connector 4 is butted against the water inlet of the second drain pipe 3. The drain pipe connector 4 is provided with three connection ports, and its structure is compact, which is beneficial to reducing the volume of the entire drainage system and further beneficial to reducing the accumulated water volume in the pipeline.

[0056] For convenient connection, the drain pipe connector 4 is provided with an "n"-shaped bracket 401. The bracket 401 includes a front plate, a left plate and a right plate, and the rear side of the bracket 401 is open; the bracket 401 and the drain pipe connector 4 are of an integral structure; the rear sides of the left plate and the right plate of the bracket 401 are fixedly connected to the dishwasher cabinet 7 through connectors; the drain pump 5 connection port and the drain pump 5 are located in the semi-surrounding cavity formed by the front plate, the left plate and the right plate of the bracket 401. The water inlet of the drain pipe connector 4 extends forward outside the front plate of the bracket 401, and the water outlet of the drain pipe connector 4 extends outside the right plate of the bracket 401. Providing the bracket 401 can reliably fix the drain pipe connector 4 on the cabinet, improve the structural stability, avoid deformation, displacement, etc. after being inserted and pulled out from the first drain pipe 2 multiple times, and improve the working reliability.

[0057] For convenient assembly, a support plate is provided between the bottom of the bracket 401 and the bottom of the dishwasher cabinet 7. Providing a support plate at the bottom of the bracket 401, the split structure can reduce the volume of the bracket 401 and reduce the processing cost. Providing the support plate can form a fulcrum and increase the distance between the bracket 401 and the bottom of the cabinet, so that there is enough installation space for the drain pump 5 and the drain valve 6.

[0058] For convenient docking of the first drain pipe 2 and the drain pipe connector 4, the water inlet of the drain pipe connector 4 is provided with a trumpet-shaped guiding portion 402 that is large at the front and small at the rear. Between the outer periphery of the guiding portion 402 and the front plate of the bracket 401, a plurality of axially arranged reinforcing ribs are provided. The trumpet-shaped guiding portion 402 that is large at the front and small at the rear has the function of guiding the insertion of the first drain pipe 2 and facilitating the insertion of the first drain pipe 2 into the drain pipe connector 4.

[0059] To further reduce the accumulated water volume, the first drain pipe 2 includes a horizontal connecting pipe 201 connected to the drain pipe connecting component and a vertical connecting pipe 202 connected to the inner tank 1 of the dishwasher. The lower end of the vertical connecting pipe 202 is closed to form a tapered hole with a larger upper part and a smaller lower part. The horizontal connecting pipe 201 is connected to the tapered hole. The front axial section of the horizontal connecting pipe 201 is arc-shaped. The horizontal connecting pipe 201 is lower than the vertical connecting pipe 202, and the front of the horizontal connecting pipe 201 is higher than the rear. A reinforcing rib is provided at the connection between the horizontal connecting pipe 201 and the vertical connecting pipe 202. The tapered hole with a larger upper part and a smaller lower part has a confluence effect to avoid water accumulation. The head of the horizontal connecting pipe 201 is arc-shaped to avoid forming dead corners, so that the water can flow down smoothly without accumulation; and the setting method of the horizontal connecting pipe 201 with a higher front and a lower rear enables the water to flow out as soon as possible.

[0060] To achieve a reliable connection between the first drain pipe 2 and the inner tank 1 of the dishwasher: the vertical connecting pipe 202 is vertically arranged. The top of the vertical connecting pipe 202 is a tray 203. There is a connection hole below the tray 203. The diameter of the tray 203 is larger than the aperture of the connection hole. The inner wall of the connection hole is provided with threads for connecting with the inner tank 1 of the dishwasher. The edge of the tray 203 abuts upward against the bottom of the inner tank of the dishwasher. The connection hole is threadedly connected with a connecting piece passing through the bottom of the inner tank of the dishwasher, so as to achieve a reliable connection between the first drain pipe 2 and the inner tank 1 of the dishwasher. And because the diameter of the tray 203 is larger than the aperture of the connection hole, the leaked water can flow back through the tray 203, reducing the possibility of water leakage.

[0061] To facilitate the insertion of the first drain pipe 2 into the drain pipe connecting component and ensure the sealing performance after the two are combined, the first drain pipe 2 is a rigid part. The water outlet of the first drain pipe 2 is a male socket, and the water inlet of the drain pipe connecting component is a female socket; two annular sealing grooves 204 are opened on the male socket, and sealing rings are embedded in the sealing grooves 204. It is convenient to insert and avoids water leakage.

[0062] Working process:

[0063] The working process of a drawer-type dishwasher will be further described below with specific embodiments:

[0064] As Figure 11 shown, in this embodiment, it includes a cleaning step, a ventilation step, and an unlocking step for three cleaning processes; after all the cleaning steps are completed, the ventilation step is carried out. After the ventilation step is completed, the unlocking step is entered to enable the inner tank 1 of the dishwasher to be pulled out from the dishwasher cabinet 7. The first cleaning work module of the dishwasher is used for standard cleaning work; the second cleaning work module is used for ultra-long cleaning work; the cleaning steps are as Figure 12 shown.

[0065] In this embodiment, the cleaning steps of the first cleaning work module are:

[0066] I. The first dishwashing:

[0067] The drain valve 6 and the drain pump 5 are turned on simultaneously, and are turned off after 15S, and the water inlet valve is turned on after 5S to fill water at 3.2L / 3.4L / 3.5L corresponding to gentle wash / normal wash / heavy wash; that is, when the user selects gentle wash, the water inlet volume is 3.2L; correspondingly, the water inlet volume for normal wash is 3.4L; the water inlet volume for heavy wash is 3.5L; in the following descriptions, the corresponding gentle wash / normal wash / heavy wash explanations are similar.

[0068] After the water injection is completed, the 30 / 45 / 60 on the display screen corresponding to gentle wash / normal wash / heavy wash starts to count down, and the spray arm starts to swing and spray. The gentle wash is for 10 minutes at 2600 revolutions, the normal wash is for 10 minutes at 2600 revolutions, and the heavy wash is for 15 minutes at 2600 revolutions. During the spraying process, the water is heated to 70℃ / 75℃ / 75℃ corresponding to gentle wash / normal wash / heavy wash by the heating plate 9. After reaching the specified temperature during this process, the heating stops, and continues to heat after the temperature drops back to 65℃ / 65℃ / 65℃. After the spraying ends, the heating plate 9 needs to stop working immediately.

[0069] After running for 10 / 10 / 15 minutes corresponding to gentle wash / normal wash / heavy wash, the spray pump 8 and the heating plate 9 stop working simultaneously. At this time, the countdown pauses. The drain valve 6 runs for 2S first and then the drain pump 5 is turned on. It ends the operation and is turned off after 18S. At this time, the remaining countdown time is 20 / 35 / 45 for gentle wash / normal wash / heavy wash respectively.

[0070] II. The second dishwashing:

[0071] After the first dishwashing is completed, it automatically enters the second dishwashing for water inlet, and the water inlet volume is 3.2L / 3.4L / 3.5L corresponding to gentle wash / normal wash / heavy wash.

[0072] After the water inlet is completed, the countdown on the display screen of 20 / 35 / 45 minutes corresponding to gentle wash / normal wash / heavy wash enters the countdown again. The spray pump 8 drives the spray arm to start spraying again. The gentle wash is for 10 minutes at 2600 revolutions, the normal wash is for 15 minutes at 2600 revolutions, and the heavy wash is for 25 minutes at 2600 revolutions. At the same time, the heating plate 9 continues to heat the water temperature to 70℃ / 75℃ / 75℃ corresponding to gentle wash / normal wash / heavy wash. During this process, the heating stops after reaching the specified temperature;

[0073] After running for 10 / 15 / 25 minutes corresponding to gentle wash / normal wash / heavy wash, the spraying ends. The drain valve 6 runs for 2S first and then the drain pump 5 is turned on. It ends the operation and is turned off after 18S. At this time, the remaining countdown time is 10 / 20 / 20 corresponding to gentle wash / normal wash / heavy wash respectively.

[0074] III. The third dishwashing:

[0075] After the second dishwashing is completed, it automatically enters the water inlet for the third dishwashing. The water inlet volume is 3.2L / 3.4L / 3.5L, corresponding to gentle wash / standard wash / heavy wash.

[0076] After the water inlet is completed, the countdown on the display screen is 10 / 20 / 20 minutes, corresponding to gentle wash / standard wash / heavy wash; it enters the countdown again. The spray pump 8 drives the spray arm to start spraying again for gentle wash for 10 minutes at 2600 revolutions, standard wash for 20 minutes at 2600 revolutions, and heavy wash for 20 minutes at 2600 revolutions. At the same time, the heating plate 9 continues to heat the water temperature to 70℃ / 75℃ / 75℃, corresponding to gentle wash / standard wash / heavy wash. During this process, the heating stops after reaching the specified temperature and continues to heat after the temperature drops back to 65℃. After the spraying ends, the work of the heating plate 9 stops. The drain valve 6 runs for 2S first and then the drain pump 5 is turned on and runs for 30S and then shuts down. At this time, the ventilation system is turned on and the ventilation pump runs for 15 minutes while the display screen counts down. After the ventilation ends, the electromagnetic door lock is closed.

[0077] The cleaning steps of the second cleaning work module are as follows:

[0078] I. In the standby state, short-press the extra-long cleaning key to make the key indicator light up. At this time, short-press the pause / start key once and the pause / start key indicator light will light up, and the extra-long cleaning function starts to run.

[0079] II. The drain valve 6 and the drain pump 5 are turned on simultaneously and closed after 15S. After 5S, the water inlet valve is turned on to let in 3.5L of water. After the water inlet volume is filled, the number 90 on the display screen starts to count down. The spray arm sprays in the standard wash mode for 20 minutes at 2600 revolutions. During the spraying process, the water is heated to 75℃ by the heating plate 9. During this process, the heating stops after reaching the specified temperature and continues to heat after the temperature drops back to 65℃. After the spraying ends, the heating plate 9 must stop working immediately.

[0080] III. After the 20-minute countdown is completed, the countdown pauses. The drain valve 6 runs for 2S first and then the drain pump 5 is turned on and runs for 18S and then shuts down.

[0081] IV. The second water inlet is 3.5L. After the water inlet volume is filled, the countdown starts. The spray arm sprays in the standard wash mode for 40 minutes at 2600 revolutions. During the spraying process, the water is heated to 75℃ by the heating plate 9. During this process, the heating stops after reaching the specified temperature and continues to heat after the temperature drops back to 65℃. After the spraying ends, the heating plate 9 must stop working immediately.

[0082] V. After the 40-minute countdown is completed, the countdown pauses. The drain valve 6 runs for 2S first and then the drain pump 5 is turned on and runs for 18S and then shuts down.

[0083] VI. The third water inlet is 3.5L. After the water inlet volume is injected, the countdown starts. The spray arm sprays for 30 minutes at 2600 revolutions in the standard washing mode. During the spraying process, the water is heated to 75°C by the heating plate 9. During this process, the heating stops after reaching the specified temperature and continues to heat after the temperature drops back to 65°C. After the spraying ends, the heating plate 9 must stop working immediately.

[0084] VII. The drain valve 6 operates for 2S first, then the drain pump 5 is turned on and runs for 30S and then shuts down. At this time, the ventilation system is turned on, the ventilation pump runs for 20 minutes, and the display screen counts down. After the ventilation ends, the electromagnetic door lock is closed.

[0085] The above Figures 1-10 The drawer - type dishwasher shown above is a specific embodiment of the present invention, which has already reflected the substantial features and progress of the present invention. According to actual usage needs, under the inspiration of the present invention, equivalent modifications can be made to its shape, structure, etc., and all are within the protection scope of this solution.

Claims

1. A drawer - type dishwasher, comprising a dishwasher body (7), a dishwasher inner container (1) capable of moving back and forth, a water inlet assembly for water inlet, a drainage assembly for drainage, a water spraying assembly for water spraying, and a heating plate (9) for heating. The dishwasher inner container (1) assembly is provided with a washing cavity; the water inlet assembly includes a water inlet pipe communicated with the washing cavity and a water inlet valve for controlling the on - off of the water inlet pipe. The water spraying assembly includes a spray pump (8) and a spray arm; a plurality of water spraying holes are provided on the spray arm, and the spray pump (8) pumps water into the spray arm. As the water sprays out from the water spraying holes, it drives the spray arm to rotate; it is characterized in that: It further includes a locking device for restricting the pulling out of the inner container (1) of the dishwasher. The drainage assembly includes a first drain pipe (2) provided at the bottom of the inner container (1) of the dishwasher, a drain pipe connection assembly matching with the first drain pipe (2), and a second drain pipe (3) provided with a drain valve (6) and connected to the drain pipe connection assembly. The drain pipe connection assembly is provided on the dishwasher cabinet (7), and includes a drain pipe connector (4) and a drain pump (5) connected to the drain pipe connector (4). The connection between the first drain pipe (2) and the drain pipe connection assembly is a pluggable connection. The water outlet of the second drain pipe (3) is arranged backward, and the water inlet of the drain pipe connection assembly is arranged forward. During the process of pushing the inner container (1) of the dishwasher into the dishwasher cabinet (7), the first drain pipe (2) moves backward with the inner container (1) of the dishwasher until the water outlet of the second drain pipe (3) is docked with the water inlet of the drain pipe connection assembly, so that the inner cavity of the dishwasher is communicated with the second drain pipe (3) through the first drain pipe (2) and the drain pipe connection assembly. When the dishwasher is in the working state, the locking device is in the locked state to prevent the inner container (1) of the dishwasher from being pulled out. When the dishwasher finishes spraying and needs to drain water, the spraying pump (8) and the heating plate (9) stop working. The drain valve (6) is started first to make the second drain pipe (3) in a through state, and then the drain pump (5) is powered on and started for strong drainage. After the drain pump (5) runs for a set time, it stops running and the drain valve (6) is closed to complete the drainage. The locking device is allowed to be in the unlocked state only after the dishwasher finishes working, and the inner container (1) of the dishwasher is allowed to be pulled out from the dishwasher cabinet (7).

2. The drawer - type dishwasher according to claim 1, characterized in that: The drain pipe connector (4) is fixedly connected above the bottom plate of the dishwasher cabinet through a connector. The drain pipe connector (4) is provided with a water inlet, a water outlet and a connection port for the drain pump (5). The water inlet of the drain pipe connector (4) is arranged opposite to the connection port for the drain pump (5), and the water outlet of the drain pipe connector (4) is arranged perpendicular to the water inlet and the connection port for the drain pump (5). The water inlet of the drain pipe connector (4) is the water inlet of the drain pipe connection assembly, and it is docked with the water outlet of the first drain pipe (2). The water outlet of the drain pipe connector (4) is docked with the water inlet of the second drain pipe (3).

3. The drawer - type dishwasher according to claim 1, characterized in that: The drain pipe connector (4) is provided with an "n"-shaped bracket (401). The bracket (401) includes a front plate, a left plate and a right plate, and the rear side of the bracket (401) is open. The bracket (401) and the drain pipe connector (4) are of an integral structure. The rear sides of the left plate and the right plate of the bracket (401) are fixedly connected to the dishwasher cabinet (7) through connectors. The connection port for the drain pump (5) and the drain pump (5) are located in the semi-surrounding cavity formed by the front plate, the left plate and the right plate of the bracket (401). The water inlet of the drain pipe connector (4) extends forward outside the front plate of the bracket (401), and the water outlet of the drain pipe connector (4) extends outside the left plate or the right plate of the bracket (401).

4. The drawer - type dishwasher according to claim 3, characterized in that: A support plate is provided between the bottom of the bracket (401) and the bottom of the dishwasher cabinet (7).

5. The drawer - type dishwasher according to claim 4, characterized in that: The water inlet of the described drain pipe connector (4) is provided with a horn-shaped guiding part (402) that is large at the front and small at the rear. A plurality of axially arranged reinforcing ribs are provided between the outer periphery of the guiding part (402) and the front plate of the bracket (401).

6. The drawer - type dishwasher according to claim 1, characterized in that: The described first drain pipe (2) includes a horizontal connecting pipe (201) connected to the drain pipe connection assembly and a vertical connecting pipe (202) connected to the inner tank (1) of the dishwasher. The lower end of the vertical connecting pipe (202) is closed to form a tapered hole that is large at the top and small at the bottom. The horizontal connecting pipe (201) is connected to the tapered hole. The front axial section of the horizontal connecting pipe (201) is arc-shaped. The horizontal connecting pipe (201) is lower than the vertical connecting pipe (202). The horizontal connecting pipe (201) is higher at the front and lower at the rear. A reinforcing rib is provided at the connection between the horizontal connecting pipe (201) and the vertical connecting pipe (202).

7. The drawer - type dishwasher according to claim 6, characterized in that: The described vertical connecting pipe (202) is vertically arranged. The top of the vertical connecting pipe (202) is a tray (203). Below the tray (203) is a connection hole. The diameter of the tray (203) is larger than the aperture of the connection hole. The inner wall of the connection hole is provided with threads for connecting to the inner tank (1) of the dishwasher.

8. The drawer - type dishwasher according to claim 1, characterized in that: The described first drain pipe (2) is a rigid part. The water outlet of the first drain pipe (2) is a male port, and the water inlet of the drain pipe connection assembly is a female port; a plurality of annular sealing grooves (204) are opened on the male port, and sealing rings are embedded in the sealing grooves (204).

9. A working method of a drawer - type dishwasher using any one of claims 1 - 8, characterized in that: During operation, the dishwasher includes one or more cleaning steps, a ventilation step, and an unlocking step; after all the cleaning steps are completed, the ventilation step is carried out. After the ventilation step is completed, it enters the unlocking step, enabling the inner tank (1) of the dishwasher to be pulled out from the dishwasher cabinet (7); Among them, the cleaning steps include: 1) The drain valve (6) and the drain pump (5) are opened simultaneously; they are closed after a set time; 2) The water inlet valve is opened with a delay, so that water enters the washing chamber through the water inlet pipe; 3) After the water injection amount is completed, the spray pump (8) operates, and the spray arm sprays. During the spraying process, the water is heated by the heating plate (9) at the same time to raise the water temperature to the set range and maintain the temperature; the heating plate (9) needs to stop working immediately after the spraying ends; 4) After the spraying ends, the drain valve (6) is started first to make the second drain pipe (3) in a through state, and then the drain pump (5) is powered on and started to carry out strong drainage. After the drain pump (5) runs for a set time, it ends the operation, and the drain valve (6) is closed to complete the drainage.

10. The working method according to claim 9, characterized in that: The dishwasher is provided with a variety of cleaning work modules; the user selects the corresponding cleaning work module according to needs; the cleaning work modules include a first cleaning work module and a second cleaning work module with a working duration longer than that of the first cleaning work module; Among them, the setting steps of the first cleaning work module include: A) The first dishwashing: The drain valve (6) and the drain pump (5) are opened simultaneously, and are closed after reaching the set time. The water inlet valve is opened with a delay to let water in; the water inlet amount is determined according to the selected cleaning degree; the cleaning degrees are gentle wash, standard wash, and strong wash; After the injection of the incoming water volume is completed, the spray pump (8) operates, and the spray arm starts to swing and spray for cleaning. During the spraying process, the water is heated to 70°C - 75°C by the heating plate (9). During this process, the heating stops after reaching the specified temperature, and continues to heat after the temperature drops back to 60°C - 65°C; after the spraying ends, the heating plate (9) needs to stop working immediately. After running for the set time, the spray pump (8) and the heating plate (9) stop working simultaneously. At this time, the countdown pauses. The drain valve (6) operates first, and then the drain pump (5) is turned on. It ends the operation and closes after reaching the set time. B) Second dishwashing: After the first dishwashing is completed, it automatically enters the water inlet for the second dishwashing. The incoming water volume is determined according to the selected cleaning degree. After the water inlet is completed, the spray pump (8) operates, and the spray arm swings and sprays for cleaning again. At the same time, the heating plate (9) continues to heat the water temperature to 70°C - 75°C. During this process, the heating stops after reaching the specified temperature. After running for the set time, the spraying ends. The drain valve (6) operates first, and then the drain pump (5) is turned on. It ends the operation and closes after reaching the set time. C) Third dishwashing: After the second dishwashing is completed, it automatically enters the water inlet for the third dishwashing. The incoming water volume is determined according to the selected cleaning degree. After the water inlet is completed, the spray pump (8) operates, and the spray arm swings and sprays for cleaning again. At the same time, the heating plate (9) continues to heat the water temperature to 70°C - 75°C. During this process, the heating stops after reaching the specified temperature. After running for the set time, the spraying ends. The drain valve (6) operates first, and then the drain pump (5) is turned on. It ends the operation and closes after reaching the set time. The ventilation system is turned on, and the ventilation pump runs until the set time and then stops. After the ventilation ends, the electromagnetic door lock as a locking device is closed; the electromagnetic door lock is in the unlocked state, allowing the dishwasher inner tank (1) to be pulled out.

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