Compound washing machine and control method

Abstract

The invention discloses a duplex washing machine and a control method, the washing machine comprises a box body, the upper side and the lower side in the box body are correspondingly provided with a first water containing drum and a second water containing drum, and the first water containing drum and the second water containing drum are correspondingly provided with a first drainage pipeline and a second drainage pipeline which extend downwards respectively; the first control valve and the second control valve are correspondingly arranged on the first drainage pipeline and the second drainage pipeline; the drainage pump is arranged on the second drainage pipeline; one end of the external water pipe is respectively communicated with the water outlets of the first drainage pipeline and the second drainage pipeline, and the other end of the external water pipe is movably arranged outside the box body. The single-drainage-pump integrated drainage system is adopted, by controlling opening and closing of the first control valve, the second control valve and the drainage pump, the upper drainage function of the first water containing barrel and the second water containing barrel can be achieved, the lower drainage function of the first water containing barrel can also be achieved, the manufacturing cost is saved, the drainage pump is installed at the bottom of the box body, operation noise is reduced, and the service life of the box body is prolonged. And the arrangement space of the capacity of the cylinder in the box body is increased.

Description

Technical Field

[0001] The invention belongs to the field of washing equipment, and in particular, relates to a duplex washing machine and a control method thereof. Background Art

[0002] A duplex washing machine has two washing units, one above the other, and needs to take into account the drainage functions of both the upper and lower washing units. Duplex washing machines are taller than ordinary single-layer washing machines, and the drainage method can rely on the gravity of the water to drain to a floor drain below the installation surface of the washing machine. However, this drainage method limits the washing machine to a place with a floor drain, and the washing machine must be placed close to the floor drain. In places without a floor drain, where the drain outlet is higher than the water outlet of the washing machine, or where the washing machine cannot be placed in a position where it can be inserted into the floor drain due to insufficient space, the simple downward drainage mode cannot be used.

[0003] The existing upper drainage requires a drainage motor pump for each of the upper washing unit and the lower washing unit, which is more expensive, occupies more space, compresses the capacity of the washing machine, and the drainage pump of the upper washing machine is installed in the air, which makes a lot of drainage noise.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art. The purpose is to provide a duplex washing machine that adopts a single drainage pump integrated drainage system, which can realize the upper drainage function of the upper washing machine and the lower laundry machine, and can also realize the lower drainage function of the upper washing machine. The drainage methods are diversified and available for users to choose, which can save manufacturing costs. The drainage pump is installed at the bottom of the box, which reduces the noise generated during operation and increases the layout space of the drum capacity in the box.

[0006] Another object of the present invention is to provide a control method for a duplex washing machine, which uses an energy-saving drainage mode when draining the upper washing machine, relies on gravity to drain the water downward, does not require a drainage pump, and has lower drainage costs and less noise.

[0007] In order to solve the above technical problems, the basic idea of ​​the technical solution adopted by the present invention is to provide a duplex washing machine, comprising

[0008] The upper and lower sides of the box body are respectively provided with a first water storage cylinder and a second water storage cylinder, and respectively correspondingly have a first drainage pipeline and a second drainage pipeline extending downward;

[0009] The first control valve and the second control valve are respectively arranged on the first drainage pipeline and the second drainage pipeline to control the on-off of the pipeline;

[0010] A drainage pump, arranged on the second drainage pipeline;

[0011] An external water pipe has one end which is respectively connected to the water outlets of the first drainage pipeline and the second drainage pipeline, and the other end which is movably arranged outside the box.

[0012] Furthermore, it also includes

[0013] A drainage tee is fixed at the bottom of the box body, and a water outlet end of the drainage tee is arranged in a drainage port at the bottom of the side wall of the box body and is connected to one end of the external water pipe;

[0014] The first drainage pipeline is extended downward from the water outlet of the first water container and connected to a water inlet end of the drainage tee. The first control valve is arranged at the water inlet end of the first drainage pipeline.

[0015] The second drainage pipeline extends downward from the water outlet of the second water storage cylinder and then extends horizontally to be connected to the other water inlet end of the drainage tee. The drainage pump and the second control valve are sequentially connected to the second drainage pipeline along the drainage direction.

[0016] Furthermore, the bottom of the box body has a base, the drain pump is fixed on an end of the base opposite to the drain outlet, and the second control valve is detachably clamped on the base between the drain pump and the drain outlet.

[0017] Furthermore, the base is provided with a clamping groove and a sliding groove with a certain extension length in sequence from the inside to the outer circumference;

[0018] The bottom of the second control valve is provided with a buckle and a guide protrusion with a certain extension length, and when the guide protrusion slides and is engaged in the slide groove along the extension direction, the buckle is engaged in the engagement groove;

[0019] Preferably, the base has two sliding grooves that are spaced apart and extend side by side and are located outside the two sides of the sliding direction of the card slot;

[0020] The second control valve is provided with a support rib and two guide protrusions, the two guide protrusions are located outside the two sides of the sliding direction of the buckle, the support rib extends and connects between the two sides of the sliding direction of the buckle and the two guide protrusions, and the support rib presses against the base outside the slot.

[0021] Furthermore, the base has a mounting surface protruding from bottom to top, the clamping groove and the sliding groove are arranged on the mounting surface, and the second control valve is slidably clamped on the mounting surface.

[0022] The present invention also provides a control method for any of the above-mentioned duplex washing machines, wherein the washing machine is preset with an energy-saving drainage mode and an electric drainage mode, and the control method comprises:

[0023] Get the drainage mode to be executed. If the energy-saving drainage mode is executed, the first drainage pipeline is controlled to be connected for drainage; if the electric drainage mode is executed, after the first drainage pipeline is closed, the second drainage pipeline is controlled to be connected and the drainage pump is operated.

[0024] Further, obtaining the drainage mode to be executed and the cylinder to be drained;

[0025] If only the first water storage drum is drained and the energy-saving drainage mode is executed, the second drainage pipeline is controlled to be disconnected, the drainage pump stops working, and the first drainage pipeline is connected to drain.

[0026] Furthermore, if only the second water storage drum is drained, when the electric drainage mode is executed, the drainage pipeline of the first water storage drum is controlled to be disconnected, the drainage pipeline of the second water storage drum is connected, and the drainage pump works to drain.

[0027] Furthermore, if both the first water storage cylinder and the second water storage cylinder are drained, or only the first water storage cylinder is drained, and the electric drainage mode is executed, the first drainage pipeline is controlled to be connected and disconnected after drainage, and then the second drainage pipeline is controlled to be connected and the drainage pump works to drain.

[0028] Furthermore, if both the first water cylinder and the second water cylinder are drained, or only the first water cylinder is drained, and the electric drainage mode is executed, the first control valve arranged at the water inlet end of the first drainage pipe is controlled to connect the drainage, and the first control valve is closed after the drainage water level in the first water cylinder is lower than the first control valve, and then the second control valve is controlled to connect and the drainage pump works.

[0029] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0030] (1) The present invention adopts a single drainage pump integrated drainage system, and only sets a drainage pump on the lower second drainage pipeline. By controlling the opening and closing of the first control valve and the second control valve, the upper drainage function of the upper first water cylinder and the lower second water cylinder can be realized, and the lower drainage function of the upper first water cylinder can be realized separately. The drainage methods are diversified and can be selected by users, which can save manufacturing costs. The drainage pump is installed at the bottom of the box body, which reduces the operating noise and increases the layout space of the cylinder capacity in the box body.

[0031] (2) The base of the present invention has a mounting surface protruding from bottom to top, which improves the installation position of the second control valve so that the water in the second drainage pipe can be discharged as much as possible, and a certain space can be left below the mounting surface, which can not only reserve space for the installation of the buckle and the guide protrusion, but also facilitate the vertical positioning of the second control valve.

[0032] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0034] Figure 1 is a schematic diagram of a duplex washing machine of the present invention;

[0035] Figure 2 is a schematic diagram of a duplex washing machine of the present invention;

[0036] Figure 3 It is a schematic diagram of a duplex washing machine of the present invention;

[0037] Figure 4 is a schematic diagram of a duplex washing machine of the present invention;

[0038] Figure 5 is a schematic diagram of a duplex washing machine of the present invention;

[0039] Figure 6 The present invention Figure 5 A schematic diagram of the enlarged structure at center A;

[0040] Figure 7 is a schematic diagram of a second control valve of the present invention;

[0041] Figure 8 is a flow chart of a control method of a duplex washing machine of the present invention;

[0042] Fig. 9 It is a detailed flow chart of a control method of a duplex washing machine of the present invention.

[0043] In the figure: 1. box body; 11. base; 111. mounting surface; 112. slot; 113. slide; 12. drain outlet; 2. first water container; 3. second water container; 4. first drain pipeline; 41. first control valve; 5. second drain pipeline; 51. second control valve; 511. buckle; 512. guide protrusion; 513. support rib; 52. drain pump; 6. drain tee; 7. external water pipe.

[0044] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0046] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] like Figures 1 to 7 As shown, the present invention provides a duplex washing machine, comprising a housing 1, a first water storage drum 2, a second water storage drum 3, a first control valve 41, a second control valve 51, a drainage pump 52 and an external water pipe 7.

[0049] The first water cylinder 2 and the second water cylinder 3 are respectively arranged on the upper side and the lower side of the interior of the box 1, that is, the first water cylinder 2 is arranged on the upper part of the second water cylinder 3. The first water cylinder 2 and the second water cylinder 3 respectively have a first drainage pipeline 4 and a second drainage pipeline 5 extending downward. The first control valve 41 and the second control valve 51 are respectively arranged on the first drainage pipeline 4 and the second drainage pipeline 5 to control the on and off of the pipelines.

[0050] The drainage pump 52 is disposed on the second drainage pipeline 5. One end of the external water pipe 7 is connected to the water outlets of the first drainage pipeline 4 and the second drainage pipeline 5 respectively, and the other end of the external water pipe 7 is movably disposed outside the box 1.

[0051] The present invention arranges a drainage pump 52 and a second control valve 51 on the second drainage pipeline 5 at the lower part. When the second water storage cylinder 3 at the lower part is drained, the second control valve 51 can be opened and the drainage pump 52 can be operated to drain water upwards; a first control valve 41 is arranged on the first drainage pipeline 4 at the upper part, and the drainage of the first water storage cylinder 2 at the upper part can be carried out by downward drainage. The external water pipe 7 is inserted into the floor drain. The washing machine can close the second control valve 51 and open the first control valve 41 to drain water downwards to prevent water from flowing downwards and backflowing into the second water storage cylinder 3. The upper first water storage cylinder 2 is located at a high position, and the gravity of the sewage can be used for drainage. The drainage can be completed without the operation of the drainage pump 52, thereby saving electric energy and avoiding the noise of the drainage motor pump; the upper first water storage cylinder 2 can also adopt upward drainage. The first control valve 41 is opened for drainage and then closed. A closed high air pressure is formed in the first drainage pipeline 4. Then the second control valve 51 is opened, and the water flows downwards into the second drainage pipeline 5. The drainage pump 52 operates to discharge the water upwards.

[0052] The present invention adopts a single drainage pump 52 integrated drainage system, and the drainage pump 52 is only set on the lower second drainage pipeline 5. By controlling the opening and closing of the first control valve 41 and the second control valve 51, the upper drainage function of the upper first water cylinder 2 and the lower second water cylinder 3 can be realized, and the lower drainage function of the upper first water cylinder 2 can also be realized separately. The drainage methods are diversified for users to choose, which can save manufacturing costs. The drainage pump 52 is installed at the bottom of the box body 1, which reduces the operating noise and increases the layout space of the cylinder capacity in the box body 1.

[0053] like Figure 1 to Figure 2 As shown, the duplex washing machine further includes a drainage tee 6 , and the drainage tee 6 is fixed at the bottom of the housing 1 .

[0054] The first drainage pipeline 4 extends downward from the water outlet of the first water container 2, and the water outlet is connected to a water inlet end of the drainage tee 6. The first control valve 41 is arranged at the water inlet end of the first drainage pipeline 4.

[0055] The second drainage pipeline 5 extends downward from the water outlet of the second water container 3 and then extends horizontally, and the water outlet is connected to the other water inlet end of the drainage tee 6. The drainage pump 52 and the second control valve 51 are sequentially connected to the second drainage pipeline 5 along the drainage direction.

[0056] The water outlet end of the drainage tee 6 is arranged in the drainage port 12 at the bottom of the side wall of the box body 1 and is connected to one end of the external water pipe 7 .

[0057] The present invention arranges the water outlet end of the drainage tee 6 in the drainage port 12 at the bottom of the side wall of the box body 1, so that the drainage port 12 of the washing machine is raised to a certain position, so that the drainage port 12 can be higher than the floor drain position of the user's home, ensuring that the water in the drainage pipe of the washing machine can be drained out when draining water from above.

[0058] The drainage pump 52 of the present invention is arranged at the front end of the second control valve 51, and can cooperate with the second control valve 51 and the first control valve 41 to realize various upper drainage situations. When the lower second water storage cylinder 3 uses upper drainage, the first control valve 41 can be closed, the second control valve 51 can be opened, and the drainage pump 52 can be operated to prevent water from being discharged upward into the first water storage cylinder 2; when the upper first water storage cylinder 2 uses upper drainage, the first control valve 41 is controlled to open to discharge the water in the first water storage cylinder 2 until the water level is lower than the first control valve 41, the first control valve 41 is closed, and then the second control valve 51 is opened, and the water passes through the second control valve 51 into the drainage pump 52, and the drainage pump 52 works to discharge the water in the second drainage pipeline 5 upward through the external water pipe 7.

[0059] Preferably, the first control valve 41 is arranged at the water inlet end of the first drainage pipeline 4, close to the water outlet of the first water storage cylinder 2. The first control valve 41 is located at the bottom of the first water storage cylinder 2.

[0060] Preferably, the drainage tee 6 is a T-shaped tee. A water inlet end of the drainage tee 6 connected to the second drainage pipeline 5 is coaxially connected to the water outlet end, and a water inlet end of the drainage tee 6 connected to the first drainage pipeline 4 is vertically connected to the water outlet end.

[0061] like Figure 3 to Figure 4 As shown, the bottom of the box body 1 has a base 11. The drain pump 52 is fixed on the end of the box body 1 opposite to the drain port 12, and the drain pump 52 is fixed on the base 11. The second control valve 51 is detachably clamped on the base 11 between the drain pump 52 and the drain port 12.

[0062] The present invention facilitates the installation of the second control valve 51 by detachably clamping the second control valve 51 on the base 11, and fixes the second control valve 51 on the base 11 to prevent the second control valve 51 and the part of the second drainage pipe 5 where it is located from vibrating or colliding with the box body 1 when the washing machine is running, thereby avoiding abnormal noise; and the second control valve 51 is arranged between the drainage pump 52 and the drainage port 12, which can prevent the second drainage pipe 5 from being excessively bent, resulting in poor drainage.

[0063] The washing machine is a drum washing machine, the first water drum 2 and the second water drum 3 have their openings facing forward, and the water outlets of the first water drum 2 and the second water drum 3 are arranged at the bottom of the drum peripheral wall.

[0064] Preferably, the drain port 12 is arranged at the bottom of the rear side wall of the box body 1, close to the left side wall of the box body 1. The drain pump 52 and the drain tee 6 are fixed to the front and rear ends of the base 11 respectively. The drain tee 6 is fixed to the base 11 by bracket screws.

[0065] The second drainage pipe 5 extends from the water outlet of the second water storage cylinder 3 to the front side and is extended toward one side of the drainage pump 52, is connected with the drainage pump 52, then bends and extends to the rear side to be connected with the second control valve 51, and then continues to extend backward to be connected with a forward water inlet end of the drainage tee 6.

[0066] The first drainage pipe 4 extends from the water outlet at the bottom of the first water storage cylinder 2, downward to the right rear side wall near the box body 1, and is connected with the first control valve 41; then it extends obliquely downward to the corner of the right rear side wall of the box body 1 and continues to extend vertically downward, extends to the front side when it is a certain distance away from the base 11, and then bends and extends obliquely downward and leftward, and is connected with the water inlet end perpendicular to the water outlet end of the drainage tee 6.

[0067] The water inlet of the drainage pump 52 is transversely arranged at the right side of the drainage pump 52, and the water outlet of the drainage pump 52 is upwardly arranged at the top of the drainage pump 52. A portion of the second drainage pipeline 5 is bent backward from the top of the drainage pump 52 and then extends to the front water inlet end of the drainage tee 6, and the second control valve 51 is connected and arranged on the portion of the second drainage pipeline 5.

[0068] like Figures 5 to 7 As shown, the bottom of the second control valve 51 is slidably engaged on the base 11 .

[0069] The base 11 includes two first connecting plates that are spaced opposite to each other and two second connecting plates that are spaced opposite to each other. The two first connecting plates are extended forward and backward and are respectively arranged below the left side wall and the right side wall of the box body 1. The two second connecting plates are extended left and right and are respectively arranged below the front side wall and the rear side wall of the box body 1. The front ends of the two first connecting plates are respectively connected to the two ends of the second connecting plate on the front side, and the rear ends of the two second connecting plates are respectively connected to the two ends of the second connecting plate on the rear side, forming a "U" shape. The middle part of the base 11 has an opening.

[0070] The drainage pump 52, the second control valve 51, and the drainage tee 6 are arranged on the first connecting plate on the left side.

[0071] The external water pipe 7 is a corrugated pipe, which extends upward from the drain port 12 along an outer wall of the box body 1 to a position between the upper and lower water cylinders, then extends horizontally along the outer wall of the box body 1 to an end of the outer wall of the box body 1 opposite to the drain port 12, and then extends downward.

[0072] like Figure 6 to Figure 7 As shown, the base 11 is provided with a clamping groove 112 and a sliding groove 113 with a certain extension length in sequence from the inside to the outer circumference. The clamping groove 112 is provided close to the opening of the base 11.

[0073] A buckle 511 and a guide protrusion 512 with a certain extension length are provided at the bottom of the second control valve 51 . When the guide protrusion 512 slides and is engaged in the slide groove 113 along the extension direction, the buckle 511 is engaged in the engagement groove 112 .

[0074] The present invention arranges the card slot 112 close to the opening of the base 11 and the slide groove 113 close to the periphery, so that when the second control valve 51 is installed, it can slide from the middle to the periphery and be connected to the base 11, the guide protrusion 512 extends into the slide groove 113, slides toward the periphery in the slide groove 113, and the buckle 511 slides into the card slot 112 to achieve the connection, which is convenient for installation and firm fixation without the need for other auxiliary connecting accessories.

[0075] The width of the slide groove 113 gradually decreases as it extends from the inside to the periphery, and the width of the guide protrusion 512 in the extending direction gradually decreases as it extends from the inside to the periphery.

[0076] During installation, the narrow end of the guide protrusion 512 is inserted into the wide part of the slide groove 113 near one end of the card slot 112, and pushed toward the peripheral direction, so that the narrow end of the guide protrusion 512 is pushed to the narrow part of the other end of the card slot 112 to achieve the limitation on the left and right sides of the extension direction. At the same time, the buckle 511 slides into the card slot 112 under the guidance of the guide protrusion 512, completing the limitation in the extension direction.

[0077] The width of the narrow end of the slide groove 113 is greater than the width of the narrow end of the guide protrusion 512, and smaller than the width of the wide end of the guide protrusion 512. The width of the wide end of the slide groove 113 is greater than the width of the wide end of the guide protrusion 512. The extended length of the slide groove 113 is greater than the extended length of the guide protrusion 512.

[0078] The narrow end of the slide groove 113 is 0.1 mm wider than the narrow end of the guide protrusion 512 .

[0079] Preferably, the base 11 has two spaced apart and extended side by side sliding grooves 113, which are located outside the two sides of the sliding direction of the clamping groove 112. The second control valve 51 is provided with a supporting rib 513 and two guiding protrusions 512, which are located outside the two sides of the sliding direction of the buckle 511 and matched with the sliding groove 113.

[0080] The support rib 513 extends and connects the two sides of the sliding direction of the buckle 511 and between the two guide protrusions 512. The support rib 513 presses against the base 11 outside the slot 112 to support the second control valve 51 and avoid damage to the buckle 511 and the guide protrusion 512.

[0081] More preferably, the second control valve 51 has two supporting ribs 513 , which extend from both sides of the sliding direction of the buckle 511 to between the two guide protrusions 512 along the sliding direction, and then bend inwards and extend to be connected to the two guide protrusions 512 respectively.

[0082] The extending direction of the slide slot 113 is inclined at a certain angle to the extending direction of the first connecting plate.

[0083] Furthermore, the base 11 has a mounting surface 111 protruding from bottom to top, which is formed by protruding from the lower side upward, and the clamping groove 112 and the sliding groove 113 are arranged on the mounting surface 111, and the second control valve 51 is slidably clamped on the upper side of the mounting surface 111.

[0084] The base 11 of the present invention has a mounting surface 111 protruding from bottom to top, which improves the installation position of the second control valve 51, so that the water in the second drainage pipe 5 can be discharged as much as possible, and a certain space can be left below the mounting surface 111, which can reserve space for the installation of the buckle 511 and the guide protrusion 512, and can also facilitate the vertical positioning of the second control valve 51.

[0085] Preferably, the mounting surface 111 is a mounting plane.

[0086] like Figures 8 to 9 As shown, the present invention also provides a control method for a duplex washing machine as described above. The control method of the present invention utilizes Figures 1 to 7 The duplex washing machine shown in the figure can use the energy-saving drainage mode when draining the water from the first water holding drum 2 at the top, and does not need to use the drainage pump 52, so the drainage cost is lower and the noise is smaller.

[0087] The washing machine is preset with an energy-saving drainage mode and an electric drainage mode, and the washing machine is provided with a selection module for allowing a user to select a drainage mode of the drum.

[0088] The control method comprises:

[0089] Get the drainage mode to be executed;

[0090] If the energy-saving drainage mode is executed, the first drainage pipeline 4 is controlled to be connected for drainage; if the electric drainage mode is executed, after the first drainage pipeline 4 is closed, the second drainage pipeline 5 is controlled to be connected and the drainage pump 52 is operated.

[0091] Furthermore, the control method comprises:

[0092] Obtain the drainage mode to be executed and the cylinder to be drained;

[0093] If the first water storage drum 2 is drained and the energy-saving drainage mode is executed, the second drainage pipeline 5 is controlled to be disconnected, the drainage pump 52 stops working, and the first drainage pipeline 4 is connected to drain.

[0094] Preferably, when the user inserts the external water pipe 7 into the floor drain, the energy-saving drainage mode of the first water cylinder 2 can be selected, and the washing machine can close the second control valve 51 and open the first control valve 41 to drain the water downward to prevent the water from flowing downward and back into the second water cylinder 3. The upper first water cylinder 2 is located at a high position, so the gravity of the water can be used for drainage, and the drainage can be completed without the operation of the drainage pump 52, thereby saving electric energy and avoiding the noise of the drainage motor pump.

[0095] Furthermore, if only the second water storage cylinder 3 drains water and the electric drainage mode is executed, the drainage pipeline of the first water storage cylinder 2 is controlled to be disconnected, a closed high air pressure is formed in the first drainage pipeline 4, the drainage pipeline of the second water storage cylinder 3 is connected, and the drainage pump 52 works to drain water.

[0096] If both the first water storage cylinder 2 and the second water storage cylinder 3 are drained, or only the first water storage cylinder 2 is drained, and the electric drainage mode is executed, the first drainage pipe 4 is controlled to be connected for drainage, and the drainage is disconnected after the first water storage cylinder 2 is drained. A closed high air pressure is formed in the first drainage pipe 4, and then the second drainage pipe 5 is controlled to be connected, and water enters the second drainage pipe 5 at the drainage pump 52. The drainage pump 52 can drain the water upward and prevent water from entering the first water storage cylinder 2.

[0097] Preferably, if both the first water cylinder 2 and the second water cylinder 3 are draining and the electric drainage mode is executed, the first control valve 41 provided at the water inlet end of the first drainage pipe 4 is controlled to be connected for drainage, and the first control valve 41 is closed after the drainage water level of the first water cylinder 2 is lower than the first control valve 41, and a closed high air pressure is formed in the first drainage pipe 4, and then the second control valve 51 is controlled to be connected and the drainage pump 52 is operated, and the residual water in the first drainage pipe 4 and the water entering the second drainage pipe 5 from the second water cylinder 3 are collected in the second drainage pipe 5 and are all discharged through the drainage pump 52.

[0098] If only the first water storage drum 2 is drained and the electric drainage mode is executed, the first control valve 41 arranged at the water inlet end of the first drainage pipe 4 is controlled to be connected for drainage. After the drainage water level in the first water storage drum 2 is lower than the first control valve 41, the first control valve 41 is closed, and a closed high air pressure is formed in the first drainage pipe 4. Then, the second control valve 51 is controlled to be connected and the drainage pump 52 is operated. The residual water in the second drainage pipe 5 flows through the second control valve 51 and the drainage pump 52 in turn and is discharged through the drainage pump 52.

[0099] After obtaining the water cylinder to be drained and the drainage mode to be executed, it is detected whether the external water pipe 7 is separated from the box body 1 and reaches the predetermined position. If so, the corresponding operation is performed; if not, the user is reminded to install the external water pipe 7.

[0100] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A duplex washing machine, characterized in that: include The upper and lower sides of the box body are respectively provided with a first water storage cylinder and a second water storage cylinder, and respectively correspondingly have a first drainage pipeline and a second drainage pipeline extending downward; The first control valve and the second control valve are respectively arranged on the first drainage pipeline and the second drainage pipeline to control the on-off of the pipeline; A drainage pump, arranged on the second drainage pipeline; An external water pipe has one end which is respectively connected to the water outlets of the first drainage pipeline and the second drainage pipeline, and the other end which is movably arranged outside the box.

2. A duplex washing machine according to claim 1, characterized in that: Also includes A drainage tee is fixed at the bottom of the box body, and a water outlet end of the drainage tee is arranged in a drainage port at the bottom of the side wall of the box body and is connected to one end of the external water pipe; The first drainage pipeline is extended downward from the water outlet of the first water container and connected to a water inlet end of the drainage tee. The first control valve is arranged at the water inlet end of the first drainage pipeline. The second drainage pipeline extends downward from the water outlet of the second water storage cylinder and then extends horizontally to be connected to the other water inlet end of the drainage tee. The drainage pump and the second control valve are sequentially connected to the second drainage pipeline along the drainage direction.

3. A duplex washing machine according to claim 2, characterized in that: The bottom of the box body has a base, the drainage pump is fixed on the end of the base opposite to the drainage port, and the second control valve is detachably clamped on the base between the drainage pump and the drainage port.

4. A duplex washing machine according to claim 3, characterized in that: The base is provided with a clamping groove and a sliding groove with a certain extension length in sequence from the inside to the outer circumference; The bottom of the second control valve is provided with a buckle and a guide protrusion with a certain extension length, and when the guide protrusion slides and is engaged in the slide groove along the extension direction, the buckle is engaged in the engagement groove; Preferably, the base has two sliding grooves that are spaced apart and extend side by side and are located outside the two sides of the sliding direction of the card slot; The second control valve is provided with a support rib and two guide protrusions, the two guide protrusions are located outside the two sides of the sliding direction of the buckle, the support rib extends and connects between the two sides of the sliding direction of the buckle and the two guide protrusions, and the support rib presses against the base outside the slot.

5. A duplex washing machine according to claim 4, characterized in that: The base has a mounting surface protruding from bottom to top, the clamping groove and the sliding groove are arranged on the mounting surface, and the second control valve is slidably clamped on the mounting surface.

6. A control method for a duplex washing machine according to any one of claims 1 to 5, characterized in that: The washing machine is preset with an energy-saving drainage mode and an electric drainage mode. The control method includes Get the drainage mode to be executed. If the energy-saving drainage mode is executed, the first drainage pipeline is controlled to be connected for drainage; if the electric drainage mode is executed, after the first drainage pipeline is closed, the second drainage pipeline is controlled to be connected and the drainage pump is operated.

7. A control method for a multiple washing machine according to claim 6, characterized in that: Obtain the drainage mode to be executed and the cylinder to be drained; If only the first water storage drum is drained and the energy-saving drainage mode is executed, the second drainage pipeline is controlled to be disconnected, the drainage pump stops working, and the first drainage pipeline is connected to drain.

8. A control method for a duplex washing machine according to any one of claims 6-7, characterized in that: If only the second water storage drum is drained, when the electric drainage mode is executed, the drainage pipeline of the first water storage drum is controlled to be disconnected, the drainage pipeline of the second water storage drum is connected, and the drainage pump works to drain.

9. A control method for a duplex washing machine according to any one of claims 6-7, characterized in that: If both the first water storage drum and the second water storage drum are drained, or only the first water storage drum is drained, and the electric drainage mode is executed, the first drainage pipeline is controlled to be connected and disconnected after drainage, and then the second drainage pipeline is controlled to be connected and the drainage pump works to drain.

10. The control method of a multiple washing machine according to claim 9, characterized in that: If both the first water storage drum and the second water storage drum are drained, or only the first water storage drum is drained, and the electric drainage mode is executed, the first control valve arranged at the water inlet end of the first drainage pipe is controlled to connect for drainage, and the first control valve is closed after the drainage water level in the first water storage drum is lower than the first control valve, and then the second control valve is controlled to connect and the drainage pump is operated.

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