Outer cylinder assembly, washing equipment and heating control method of washing equipment

Abstract

The invention discloses an outer cylinder assembly, washing equipment and a heating control method of the washing equipment, and the outer cylinder assembly comprises a front cylinder integral part which is integrally provided with a cylinder opening and a front cylinder cavity which are communicated with each other, and a front water storage cavity which is isolated from the front cylinder cavity, and is provided with a front separation part used for separating the front cylinder cavity from the front water storage cavity; a rear cylinder cavity and a rear water storage cavity which are separated from each other are integrally formed in the rear cylinder integral part, and the rear cylinder integral part is provided with a rear separation part for separating the rear cylinder cavity from the rear water storage cavity; the rear cylinder integral part is connected to the end, away from the cylinder opening, of the front cylinder integral part, the front cylinder cavity and the rear cylinder cavity are communicated front and back to form an inner cavity of the outer cylinder, and the front water storage cavity and the rear water storage cavity are communicated front and back to form a water storage cavity; the water storage cavity is formed below the inner cavity of the outer barrel, and the front partition part and the rear partition part at least partially coincide up and down. According to the invention, the inner cavity of the outer cylinder is integrally connected with the water storage cavity below, so that the stress is more uniform, the use durability is stronger, and the problem that the front separation part and the rear separation part are difficult to seal is solved through the up-and-down overlapping structure of the front separation part and the rear separation part.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of washing equipment, in particular to an outer drum assembly, a washing equipment and a heating control method thereof. BACKGROUND

[0002] In the prior art, most of the drum washing machines are provided with counterweights outside the outer drum. The main purposes of installing the counterweights are as follows: one is to increase the weight of the outer drum and the inner drum assembly of the washing machine, so as to increase the inertia, thereby reducing the vibration of the washing machine during high-speed dehydration, which is the main purpose of installing the counterweights; the other is to adjust the balance by using the counterweights, so that the axis of the inner drum of the washing machine is basically parallel to the horizontal plane when it is normally placed. However, on some washing machines, since the outer drum and the inner drum assembly have reached balance during design, the counterweights do not play a balancing role, but increase the weight. Generally, the weight of the counterweight is between 10-20 kg, which is made of materials with high specific gravity and low price, such as cement. Since the counterweight is added, the weight of the washing machine is greatly increased, resulting in increased cost and cost during the assembly and transportation of the washing machine.

[0003] In order to solve the above problems, a light washing machine with a recovery water tank is disclosed in Chinese Patent No. 202321526662.3, which comprises a washing machine shell, a water containing drum and a recovery water tank. Two mounting lugs are provided on the recovery water tank, and a protruding rib is provided on the outer wall of the water containing drum. The recovery water tank is connected to the top end of the water containing drum by means of the two mounting lugs and the protruding rib. By replacing the cement counterweight with the recovery water tank, the weight of the washing machine during assembly and transportation is effectively reduced.

[0004] However, whether it is the prior art of installing the counterweight or the above-mentioned scheme of replacing the counterweight with the recovery water tank, there is a problem of stress concentration at the installation position. Specifically, the counterweight in the prior art is generally fixed on the outer drum at several points by means of bolts, and the stress concentration is serious. In the above-mentioned scheme of providing the recovery water tank, the water containing drum cannot avoid the problem of stress concentration at the position where the protruding rib is provided. After long-term use, the position of stress concentration is easily damaged, resulting in poor durability of the outer drum.

[0005] Therefore, the present application is proposed. SUMMARY

[0006] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, and to provide an outer drum assembly, a washing equipment and a heating control method thereof, so as to evenly distribute the stress at the connection between the outer drum and the water storage tank structure, thereby improving the durability of the outer drum.

[0007] To solve the above technical problems, the basic idea of the technical solution of the present application is as follows:

[0008] An outer drum assembly comprises:

[0009] A front drum integral piece integrally formed with a front drum opening and a front drum cavity in communication, and a front water storage cavity isolated from the front drum cavity, and having a front partition for separating the front drum cavity and the front water storage cavity;

[0010] A rear drum integral piece integrally formed with a rear drum cavity and a rear water storage cavity isolated, and having a rear partition for separating the rear drum cavity and the rear water storage cavity;

[0011] The rear drum integral piece is connected to the front drum integral piece at an end away from the drum opening, the front drum cavity and the rear drum cavity pass through from front to back to form an inner cavity of the outer drum, and the front water storage cavity and the rear water storage cavity pass through from front to back to form a water storage cavity;

[0012] The water storage cavity is formed below the outer drum, and the front partition and the rear partition at least partially overlap vertically.

[0013] Further, the end of the front drum integral piece away from the drum opening is a first open end, the front partition is provided by the front drum integral piece extending from an end with the drum opening to the first open end, and the extension end protrudes from the first open end;

[0014] And / or, the end of the rear drum integral piece connected to the front drum integral piece is a second open end, the rear partition is provided by the rear drum integral piece extending from the other end to the second open end, and the extension end protrudes from the second open end.

[0015] Further, the thickness of the front partition in the region close to the extension end thereof is smaller than that in the region close to the starting end thereof;

[0016] The thickness of the rear partition in the region close to the extension end thereof is smaller than that in the region close to the starting end thereof.

[0017] Further, a sealing member is provided between the front drum integral piece and the rear drum integral piece, and the sealing member surrounds the first open end;

[0018] The front drum integral piece and the rear drum integral piece are connected by fasteners, and the fasteners are provided in multiple and distributed at intervals around the first open end.

[0019] A washing device has the above-mentioned outer drum assembly, and a rotatable inner drum is arranged in the inner cavity of the outer drum.

[0020] Further, the central axis of the outer drum is arranged obliquely relative to the horizontal direction, and one end where the front drum integral piece is located is higher than one end where the rear drum integral piece is located;

[0021] Preferably, the length of the front drum integral piece along the axial direction of the outer drum is smaller than the length of the rear drum integral piece along the axial direction of the outer drum.

[0022] Further, the washing device is provided with a drain pipe, a water inlet end of the drain pipe being connected to the rear cylinder integral part and communicating with the inner cavity of the outer cylinder;

[0023] Preferably, the water inlet end of the drain pipe is connected to the end of the rear cylinder integral part away from the front cylinder integral part, close to the bottom of the outer cylinder.

[0024] Further, the inner cylinder can independently hold water during the washing process;

[0025] The washing device is provided with a water immersion sensor;

[0026] The water immersion sensor is arranged on the bottom wall of the inner cavity of the outer cylinder, or in the drain pipe.

[0027] Further, the washing device has a water inlet pipe, the inlet end of which is in communication with the water storage cavity, and the outlet end is in communication with the inner cylinder;

[0028] The washing device is provided with a circulating pipe in communication with the water storage cavity, a water pump is arranged on the circulating pipe, and the inlet end of the water inlet pipe is in communication with the circulating pipe;

[0029] The washing device is provided with a control valve, through which the water pump can switch to execute the first working state or the second working state;

[0030] Wherein, the water pump executes the first working state, drives the water in the water storage cavity to enter the circulating pipe, and then returns to the water storage cavity along the circulating pipe to form a circulation; the water pump executes the second working state, drives the water in the water storage cavity to enter the water inlet pipe along the circulating pipe, and injects into the inner cylinder along the water inlet pipe;

[0031] Preferably, the washing device is provided with a heating device for heating the water in the water storage cavity;

[0032] More preferably, the outer cylinder assembly has a circulating water outlet in communication with the water storage cavity, the water in the water storage cavity enters the circulating pipe through the circulating water outlet when the water pump executes the first working state; the heating device is arranged in the water storage cavity close to the circulating water outlet.

[0033] A heating control method of the above-mentioned washing device, the washing device has a water inlet pipe, the inlet end of which is in communication with the water storage cavity, and the outlet end is in communication with the inner cylinder;

[0034] The washing device is provided with a heating device for heating the water in the water storage cavity, and a water pump for driving the water in the water storage cavity to inject into the inner cylinder along the water inlet pipe;

[0035] The washing device obtains the target heating temperature T0 of this operation and the washing water amount H0;

[0036] Start the water pump, and inject the washing water from the water storage cavity to the inner cylinder to reach a first water injection amount H1, and then close the water pump, wherein H1

[0037] The heating device operates to heat the remaining water in the water storage cavity;

[0038] Detect the water temperature in the water storage cavity to reach a set temperature T1, and then start the water pump again to inject the washing water from the water storage cavity to the inner cylinder to reach a second water injection amount H2, and then close the water pump, wherein T1>T0, and H2=H0-H1.

[0039] Compared with the prior art, the present application has the following beneficial effects.

[0040] In the present application, the front cylinder integral part and the rear cylinder integral part are integrally formed respectively, and after being assembled, the inner part forms the outer cylinder cavity and the water storage cavity which are arranged in isolation from each other, and the connection between the two cavities is in an integral connection mode, so that the stress is more uniform, and the problem of stress concentration is avoided, and the use durability of the outer cylinder assembly is improved. In addition, the front partition part and the rear partition part form an upper-lower overlapping structure, which can effectively block the flow of water between the outer cylinder cavity and the water storage cavity, and solve the problem that this place is closed inside the overall structure after the outer cylinder assembly is completed and is difficult to be additionally sealed.

[0041] In the present application, the outer cylinder assembly is installed in the washing equipment, and the axis of the outer cylinder is arranged obliquely, so that the end where the cylinder port is located is higher, and cooperates with the upper-lower overlapping structure of the front partition part and the rear partition part, so that the water in the outer cylinder cavity cannot enter the water storage cavity, and the cleanliness of the water in the water storage cavity is ensured.

[0042] In the present application, for the case that the washing water needs to be heated, part of the washing water is first injected from the water storage cavity to the inner cylinder, then the remaining water in the water storage tank is continuously heated to a set temperature T1 which is higher than the target heating temperature T0, and then the remaining water is injected into the inner cylinder to mix with the injected washing water, so that the washing water with the target heating temperature T0 is obtained, which is beneficial to improve the heating efficiency and shorten the overall time of the washing program.

[0043] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0044] The accompanying drawings are part of the present application and serve to provide a further understanding of the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application but do not constitute an improper limitation on the present application. Obviously, the accompanying drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creating laborious work. In the drawings:

[0045] Figure 1is a front view of the outer cylinder assembly in the first to fifth embodiments of the present application;

[0046] Figure 2 is a sectional view of the outer cylinder assembly in the first to fifth embodiments of the present application;

[0047] Figure 3 is a sectional view of the outer cylinder assembly in the first to fifth embodiments of the present application along Figure 2 the A-A section;

[0048] Figure 4 is a structural schematic view of the washing device in the first, third to fifth embodiments of the present application;

[0049] Figure 5 is a front view of the washing device in the first to fifth embodiments of the present application (without the machine shell, machine door and waterway structure);

[0050] Figure 6 is a structural schematic view of the washing device in the second to fifth embodiments of the present application.

[0051] In the drawings: 100, machine shell; 200, machine door; 210, window pad; 300, drain pipe; 310, water immersion sensor; 320, drain valve; 410, water injection pipe; 420, water storage tank; 420a, water storage cavity; 420a-1, front water storage cavity; 420a-2, rear water storage cavity; 421, first joint; 422, second joint; 423, third joint; 430, circulation pipe; 440, water pump; 450, control valve; 460, water inlet pipe; 500, heating device; 600, driving motor; 710, outer cylinder; 710a, inner cavity; 710a-1, front cylinder cavity; 710a-2, rear cylinder cavity; 711, front cylinder integral piece; 7111, cylinder mouth; 7112, front partition portion; 7113, front flange of cylinder; 712, rear cylinder integral piece; 7121, rear flange of cylinder; 7122, shaft sleeve hole; 7123, fourth joint; 7124, rear partition portion; 7125, drain port; 713, sealing piece; 714, fastening piece; 720, inner cylinder; 810, water inlet valve; 820, flushing pipe; 830, detergent dispenser; 910, support damper; 920, hanging spring.

[0052] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0054] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0055] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] Embodiments of the present application provide an outer cylinder assembly, and a washing device having the outer cylinder assembly. The washing device can be a washing machine, a washer-dryer, a care machine, etc. household appliances with laundry washing function.

[0057] Specifically, as shown in Figures 1 to 6 The washing device has an outer cylinder 710 and an inner cylinder 720, and the inner cylinder 720 is rotatably arranged inside the outer cylinder 710.

[0058] As a specific structure, the washing device has a cabinet 100, and the outer cylinder 710 is arranged inside the cabinet 100. A hanging spring 920 is arranged between the outer cylinder 710 and the top wall of the cabinet 100, for hanging the outer cylinder 710, and a support damper 910 is arranged between the outer cylinder 710 and the bottom wall of the cabinet 100, for assisting the support of the outer cylinder 710 inside the cabinet 100. The hanging spring 920 and the support damper 910 can jointly reduce the vibration of the outer cylinder 710 during the operation of the washing device.

[0059] In a further scheme, a water storage tank 420 is arranged below the outer cylinder 710, and the water storage tank 420 is in communication with an external water source and can inject water into the inside of the water storage tank 420. When the water storage tank 420 stores water, it can replace the counterweight in the traditional washing machine structure, or, under the premise of retaining the existing counterweight, it can enhance the anti-eccentricity capability and further reduce the vibration.

[0060] In existing structures, the water tank 420 and the outer cylinder 710 are generally manufactured separately, and then the water tank 420 is installed to the bottom of the outer cylinder 710. Specifically, several fixing points are usually set on the outer cylinder 710, and the water tank 420 is fixed to these fixing points one by one using bolts or other connectors. However, this assembly method can lead to stress concentration at the fixing points. The outer cylinder 710 is generally made of plastic, and after long-term use, it is prone to damage at the stress concentration points.

[0061] Example 1

[0062] like Figures 1 to 3 As shown, this embodiment provides an outer cylinder assembly to solve the problem of stress concentration in the later assembly of the outer cylinder 710 with the water storage tank 420, which leads to poor durability of the outer cylinder 710.

[0063] In this embodiment, the outer cylinder assembly integrates the functions of the outer cylinder 710 and the water storage tank 420 into one unit. It is assembled from the front cylinder integral component 711 and the rear cylinder integral component 712, and has the following structure.

[0064] The front cylinder integral component 711 is manufactured using a one-piece molding process, forming a cylinder opening 7111 that communicates with the external environment, and a front cylinder cavity 710a-1 that communicates with the cylinder opening 7111. Below the front cylinder cavity 710a-1, a front water storage cavity 420a-1 that is completely isolated from the front cylinder cavity 710a-1 is also formed. Specifically, the front water storage cavity 420a-1 is completely separated from the front cylinder cavity 710a-1 by a front partition 7112.

[0065] The rear cylinder integral component 712 also adopts an integral molding process, forming two relatively independent spaces: the rear cylinder cavity 710a-2 and the rear water storage cavity 420a-2. The two spaces are distributed vertically and are completely separated by the rear partition 7124.

[0066] During assembly, the rear cylinder integral component 712 is connected to the end of the front cylinder integral component 711 away from the cylinder opening 7111, allowing the front cylinder cavity 710a-1 and the rear cylinder cavity 710a-2 to be connected front to back, together forming the inner cavity 710a of the outer cylinder 710. Simultaneously, the front water storage cavity 420a-1 and the rear water storage cavity 420a-2 are also connected front to back, together forming the water storage cavity 420a of the water storage tank 420. The front partition 7112 and the rear partition 7124 cooperate to completely isolate the inner cavity 710a of the outer cylinder 710 from the water storage cavity 420a of the water storage tank 420, allowing the water storage tank 420 to hold water independently of the outer cylinder 710.

[0067] With the above structure, the front barrel integral part 711 and the rear barrel integral part 712 are respectively integrally formed parts, so that the connection between the outer barrel 710 and the water storage tank 420 in the outer barrel assembly is an integral connection structure, and stress is more evenly distributed, avoiding the problem of stress concentration. In this way, the outer barrel assembly has stronger durability.

[0068] In this embodiment, the rear barrel integral part 712 and the front barrel integral part 711 are provided with sealing members 713 and fasteners 714 at the connection to ensure the sealing performance of the outer barrel assembly.

[0069] However, the sealing method of installing the sealing members 713 and the fasteners 714 is generally only achieved from the outside, but the front partition part 7112 and the rear partition part 7124 are closed inside the outer barrel assembly after the rear barrel integral part 712 and the front barrel integral part 711 are connected, and it is difficult to install the fasteners 714. If only the fasteners 714 on the outer periphery are used to press the front barrel integral part 711 and the rear barrel integral part 712, the force at the connection between the front partition part 7112 and the rear partition part 7124 is limited, and the sealing reliability is low. Therefore, the present embodiment further adopts the following scheme.

[0070] In this embodiment, after the front barrel integral part 711 and the rear barrel integral part 712 are assembled in place, the front partition part 7112 and the rear partition part 7124 at least partially overlap, forming a structure that overlaps up and down. In this way, the front partition part 7112 and the rear partition part 7124 are arranged in close contact, which can effectively block the flow of water between the inner cavity 710a of the outer barrel 710 and the water storage cavity 420a of the water storage tank 420, especially can prevent the water collected in the outer barrel 710 from seeping into the water storage tank 420, and ensure the cleanliness of the water in the water storage tank 420.

[0071] Specifically, the end of the front barrel integral part 711 away from the barrel mouth 7111 (i.e. the rear end in Figure 2 ) is a first open end, and the front partition part 7112 is arranged by extending from the end of the front barrel integral part 711 having the barrel mouth 7111 to the first open end. The end of the rear barrel integral part 712 connected to the front barrel integral part 711 (i.e. the front end in Figure 2 ) is a second open end, and the rear partition part 7124 is arranged by extending from the rear end of the rear barrel integral part 712 to the second open end. During assembly, the first open end of the front barrel integral part 711 and the second open end of the rear barrel integral part 712 are arranged opposite to each other.

[0072] As a specific implementation, the extension end of the front partition part 7112 protrudes from the first open end of the front barrel integral part 711, and the extension end of the rear partition part 7124 protrudes from the second open end of the rear barrel integral part 712.

[0073] After the front barrel integral member 711 and the rear barrel integral member 712 are assembled in place, the extended end of the front partition 7112 extends into the interior of the rear barrel integral member 712, and the extended end of the rear partition 7124 extends into the interior of the front barrel integral member 711. In this way, the front partition 7112 and the rear partition 7124 form a structure in which the upper and lower portions overlap and are joined.

[0074] As another specific embodiment, the extended end of the front partition protrudes beyond the first open end of the front barrel integral member, and the extended end of the rear partition is flush with the second open end of the rear barrel integral member.

[0075] After the front barrel integral member and the rear barrel integral member are assembled in place, the extended end of the front partition extends into the interior of the rear barrel integral member, and forms a structure in which the upper and lower portions overlap and are joined with the rear partition located in the interior of the rear barrel integral member.

[0076] As another specific embodiment, the extended end of the front partition protrudes beyond the first open end of the front barrel integral member, and the extended end of the rear partition is flush with the second open end of the rear barrel integral member.

[0077] After the front barrel integral member and the rear barrel integral member are assembled in place, the extended end of the front partition extends into the interior of the rear barrel integral member, and forms a structure in which the upper and lower portions overlap and are joined with the rear partition located in the interior of the rear barrel integral member.

[0078] In a further aspect of the embodiment, the thickness of the front partition 7112 is smaller in the region near the extended end than in the region near the starting end, and similarly, the thickness of the rear partition 7124 is smaller in the region near the extended end than in the region near the starting end.

[0079] In the above aspect, the thickness of the front partition 7112 and the rear partition 7124 is reduced in the region where the upper and lower portions overlap, so that the total thickness of the overlapping region is substantially the same as the thickness of each of the non-overlapping regions.

[0080] As one specific structure, specifically, the front partition 7112 has two sections with different thicknesses, and the section near the extended end has a smaller thickness. Similarly, the rear partition 7124 has two sections with different thicknesses, and the section near the extended end has a smaller thickness.

[0081] In one specific embodiment, when the front barrel integral member 711 and the rear barrel integral member 712 are assembled, the front partition 7112 is joined to the upper side of the rear partition 7124. The upper side of the front partition 7112 is a smooth surface, and the lower side has a stepped structure at the junction of the two sections with different thicknesses. Similarly, the lower side of the rear partition 7124 is a smooth surface, and the upper side has a stepped structure at the junction of the two sections with different thicknesses.

[0082] In another specific embodiment, the rear partition portion can be arranged to overlap the upper side of the front partition portion. In this structure, the upper side of the rear partition portion is a smooth surface, and the lower side of the rear partition portion has a stepped structure at the joint between the two sections with different thicknesses. The lower side of the front partition portion is a smooth surface, and the upper side of the front partition portion has a stepped structure at the joint between the two sections with different thicknesses.

[0083] Further, after the front cylinder integral part 711 and the rear cylinder integral part 712 are assembled, the upper sides of the front partition portion 7112 and the rear partition portion 7124 are flush, and the lower sides of the front partition portion 7112 and the rear partition portion 7124 are flush. In this way, the joint between the front cylinder integral part 711 and the rear cylinder integral part 712 in the inner cavity 710a of the outer cylinder 710 and the water storage cavity 420a of the water storage tank 420 is close to a smooth transition.

[0084] In a further scheme of the present embodiment, a sealing member 713 is arranged between the first open end of the front cylinder integral part 711 and the second open end of the rear cylinder integral part 712, and the sealing member 713 surrounds the first open end. After the front cylinder integral part 711 and the rear cylinder integral part 712 are assembled in place, the sealing member 713 is clamped and compressed by the front cylinder integral part 711 and the rear cylinder integral part 712, thereby achieving sealing.

[0085] The front cylinder integral part 711 and the rear cylinder integral part 712 are connected by fasteners 714, and the sealing member 713 between the two is compressed. The fasteners 714 are arranged in multiple numbers and are distributed at intervals around the first open end.

[0086] Specifically, the first open end of the front cylinder integral part 711 has a front cylinder flange 7113 protruding outwardly and arranged around the first open end, and the second open end of the rear cylinder integral part 712 has a rear cylinder flange 7121 protruding outwardly and arranged around the second open end. The fasteners 714 are arranged through the front cylinder flange 7113 and the rear cylinder flange 7121.

[0087] More specifically, the front cylinder flange 7113 and the rear cylinder flange 7121 are respectively provided with a plurality of fastening holes corresponding in position, and the fasteners 714 are fastening bolts arranged in the fastening holes. The fastening bolts are provided with nuts at both ends, and the nuts are tightened to compress the sealing member 713 between the front cylinder flange 7113 and the rear cylinder flange 7121.

[0088] In a more specific structure, the first open end of the front cylinder integral part 711 has a first groove on the end face, and the first groove surrounds the first open end. The second open end of the rear cylinder integral part 712 has a second groove on the end face, and the second groove surrounds the second open end. The sealing member 713 is arranged in the space formed by the first groove and the second groove, and is compressed and sealed against the inner walls of the first groove and the second groove, respectively.

[0089] In the preferred structure of this embodiment, after the front cylinder integral component 711 and the rear cylinder integral component 712 are assembled in place, the first open end face of the front cylinder integral component 711 and the second open end face of the rear cylinder integral component 712 are positioned opposite each other without contacting each other. Furthermore, there is a certain gap between the extended end of the front partition 7112 and the stepped surface formed at the junction of the two sections of the rear partition 7124 with different thicknesses; similarly, there is also a certain gap between the extended end of the rear partition 7124 and the stepped surface formed at the junction of the two sections of the front partition 7112 with different thicknesses.

[0090] Through the above design, anti-interference space is reserved for the front cylinder integral component 711 and the rear cylinder integral component 712 to press the sealing component 713, thus ensuring the sealing effect.

[0091] This embodiment also provides a washing device with the above-mentioned outer drum assembly. The washing device can be a washing machine, washer-dryer combo, garment care machine, or other household appliances with clothing cleaning functions.

[0092] like Figures 1 to 5 As shown, the washing equipment described in this embodiment has an inner drum 720 that can independently hold water during the washing process. The inner drum 720 is rotatably disposed inside the outer drum 710 and is coaxially arranged with the outer drum 710.

[0093] In one specific implementation, the inner drum 720 does not have a dewatering hole; instead, it has a water passage hole with a sealing valve only in a localized area, such as the installation area covered by the lifting ribs (not shown in the figure). During the washing process, the sealing valve remains closed to the water passage hole. The inner drum 720 can both hold clothes and store water, while the outer drum 710 does not store water. During drainage and spin-drying, the sealing valve can open the water passage hole, thereby draining the water in the inner drum 720 into the outer drum 710, where it is collected and drained away.

[0094] The washing equipment has a water inlet pipe 460 for injecting water into the inner drum 720. The inlet end of the water inlet pipe 460 can be connected to the water storage chamber 420a of the water storage tank 420, and the outlet end is connected to the inner drum 720.

[0095] The water storage tank 420 is connected to an external water source through a water inlet system, and the washing equipment is equipped with a water pump 440. When the washing equipment is filled with water, tap water is first injected into the water storage tank 420, and then the water pump 440 drives the water in the water storage tank 420 to be injected into the inner drum 720 along the water inlet pipe 460.

[0096] In one specific embodiment, a certain amount of water can be pre-filled into the water storage tank 420. When the washing equipment reaches the water inlet stage of the washing program, the water in the water storage tank 420 is pumped into the inner drum 720 by the water pump 440. The water injection speed is much greater than the water inlet speed of tap water, which shortens the time required for the water inlet operation and helps to reduce the overall washing time.

[0097] In the specific structure, the water inlet system comprises a water injection pipe 410, and an outlet end of the water injection pipe 410 is connected to the water storage tank 420, so as to introduce water into the water storage tank 420 along the water injection pipe 410.

[0098] More specifically, the water inlet system further comprises a flushing pipe 820 and a detergent dispenser 830. The flushing pipe 820 is connected to an external water source, and a water inlet valve 810 for controlling the opening and closing of the flushing pipe 820 is arranged on the flushing pipe 820. An outlet end of the flushing pipe 820 is connected to the detergent dispenser 830, and water can be introduced into a distributor box of the detergent dispenser 830 to mix with the detergent in the distributor box and then be discharged. An inlet end of the water injection pipe 410 is connected to the detergent dispenser 830, and an outlet end of the water injection pipe 410 is connected to the water storage tank 420, so as to introduce the mixture of the detergent and water into the water storage tank 420.

[0099] In the embodiment, a first connector 421 for connecting the water injection pipe 410 is further arranged on the outer drum assembly. Specifically, the first connector 421 is arranged on the front drum integral piece 711 and communicates with the front water storage cavity 420a-1.

[0100] Preferably, the first connector 421 is arranged on the front end of the front drum integral piece 711. In the washing appliance, the detergent dispenser 830 is generally arranged on the front side of the whole machine, and the first connector 421 is arranged on the front end of the front drum integral piece 711, so as to facilitate the connection between the detergent dispenser 830 and the first connector 421 through the water injection pipe 410.

[0101] In a further scheme of the embodiment, when the outer drum assembly is installed into the cabinet 100 of the washing appliance, the central axis of the outer drum 710 is arranged to be inclined relative to the horizontal direction, so that the end where the front drum integral piece 711 is located is higher than the end where the rear drum integral piece 712 is located.

[0102] The outer drum assembly has a drain 7125 which communicates with the inner cavity 710a of the outer drum 710, and the water discharged from the inner drum 720 enters the outer drum 710 and is then discharged through the drain 7125. In this way, a large amount of water is not stored in the inner part of the outer drum 710. By using the above-mentioned inclined installation manner, the washing water entering the outer drum 710 will gather towards the rear end, and thus a large amount of washing water will not be left at the joint between the front partition 7112 and the rear partition 7124, further ensuring that water will not enter the water storage tank 420 from the outer drum 710.

[0103] Preferably, the length of the front drum integral piece 711 along the axial direction of the outer drum 710 is smaller than the length of the rear drum integral piece 712 along the axial direction of the outer drum 710. In this way, the joint between the front partition 7112 and the rear partition 7124 is closer to the front end of the outer drum assembly, further reducing the probability of the joint contacting the washing water.

[0104] Further, the washing device is provided with a drain pipe 300 for draining water outside, a water inlet end of the drain pipe 300 being communicated with the inner cavity 710a of the outer drum 710, and a water outlet end extending outside the cabinet 100.

[0105] In the embodiment, the inner drum 720 can independently hold water, the outer drum 710 is not used for water storage, and is only used for collecting and draining water of the inner drum 720. The lower water draining structure can be used, the setting of the water draining pump or other water draining driving device is omitted, the cost is saved, and the disadvantages of the upper water draining structure can be avoided, and no residual sewage can be left after the water draining is completed. At the same time, the water draining valve does not need to be arranged on the drain pipe 300, and a normal open state can be maintained. In addition, since the water draining driving device is omitted, the lint filter matched with the water draining driving device also does not need to be arranged, and the cost is saved.

[0106] In addition, since the water flow driven by the water pump 440 is tap water directly injected from an external water source, the tap water does not contact the clothes in the inner drum 720, and thus no lint is contained in the tap water, and thus the lint filter also does not need to be arranged, and the cost can be saved.

[0107] In the washing stage, the inner drum 720 independently holds water, and the outer drum 710 is water-free, so that the water consumption for washing can be greatly reduced, and the amount of washing agent can also be reduced. The washing water is only drained from the inner drum 720 to the outer drum 710, and no water flow from the outer drum 710 to the inner drum 720 exists, the water between the inner drum 720 and the outer drum 710 is not mixed, and the problem of cross contamination of the clothes by the dirt between the inner drum 720 and the outer drum 710 is avoided.

[0108] In a specific scheme, the water draining port 7125 of the outer drum assembly is arranged on the rear drum integral piece 712 and is communicated with the rear drum cavity 710a-2, and the outer periphery of the water draining port 7125 extends to the outside of the rear drum cavity 710a-2 to form a fourth joint 7123 for connecting the drain pipe 300.

[0109] As a specific embodiment, the water draining port 7125 is arranged at the rear end of the rear drum integral piece 712 and is close to the lowest position of the outer drum 710. Preferably, the lowest position of the water draining port 7125 is flush with the lowest position of the rear partition 7124, and cooperates with the inclined structure of the outer drum 710 that is high in front and low in rear, so that the water in the outer drum 710 can be completely drained through the water draining port 7125, and residual water can be avoided.

[0110] The drain pipe 300 extends from the rear side of the cabinet 100, and the water draining port 7125 is arranged at the rear end of the rear drum integral piece 712, so that the extension length of the drain pipe 300 can be saved. At the same time, the fourth joint 7123 does not occupy the space below the outer drum 710, and provides space for increasing the volume of the water storage tank 420.

[0111] In the embodiment, when the water storage tank 420 is filled with water, the mass of the bottom of the outer drum assembly can be increased to serve as a counterweight for the bottom of the outer drum 710, thereby reducing the vibration amplitude of the outer drum 710 during operation of the washing appliance. By increasing the volume of the water storage tank 420, the mass of the water storage tank 420 when filled with water can be increased, thereby improving the damping effect.

[0112] In the preferred structure of the embodiment, the front and rear ends of the water storage tank 420 are flush with the front and rear ends of the outer drum 710, so that the volume of the water storage tank 420 is larger and can hold more water, thereby further improving the damping effect.

[0113] In the embodiment, the rear drum integral piece 712 of the outer drum assembly is further provided with a shaft sleeve hole 7122 that is in communication with the rear drum cavity 710a-2. The outer drum assembly is applied to a washing appliance, and the driving motor 600 of the washing appliance is arranged at the rear side of the outer drum 710. A shaft sleeve is arranged in the shaft sleeve hole 7122, and the inner drum driving shaft passes through the shaft sleeve and is connected to the inner drum 720 and the driving motor 600, respectively, so that the inner drum 720 can be driven to rotate in the outer drum 710 by the driving motor 600.

[0114] In the embodiment, the inclined installation of the outer drum assembly has the following advantages. On the one hand, the inner drum 720 is coaxially arranged with the outer drum 710, and the drum opening end of the inner drum 720 is higher than the drum bottom end without closing the drum opening of the inner drum 720. Compared with the horizontal placement, more washing water can be held, and washing and rinsing are facilitated. At the same time, when the inner drum 720 rotates, the clothes are close to the rear part of the inner drum 720, and the washing water is also collected at the rear part, thereby avoiding the risk of water leakage at the window cushion 210.

[0115] On the other hand, during the dehydration process, the clothes are closer to the rear part of the inner drum 720 and closer to the inner drum driving shaft connected at the bottom of the drum and the driving motor 600 arranged at the rear side of the outer drum 710, which is also conducive to reducing the vibration amplitude during dehydration.

[0116] In addition, in the embodiment, only three support dampers 910 need to be arranged below the outer drum 710, wherein one support damper 910 is arranged on the left and right sides of the region close to the front end of the outer drum 710, and the third support damper 910 is arranged at the rear side of the outer drum 710. The upper end of the support damper 910 is hinged to the middle region of the rear wall of the outer drum 710. Compared with the structure in which at least four support dampers need to be arranged in the prior structure, the scheme of the embodiment reduces the number of support dampers 910 arranged, thereby saving costs.

[0117] In a further scheme of the embodiment, the washing appliance is provided with a heating device 500 at the water storage tank 420, which can heat the water in the water storage cavity 420a, and then inject the heated water into the inner drum 720, thereby realizing the washing water heating function.

[0118] In a further aspect of the embodiment, the washing device is provided with a water immersion sensor 310 in the drain pipe 300. During the process of water injection into the inner drum 720 from the water storage cavity 420a, the inner drum 720 is controlled to continuously rotate. When the laundry in the inner drum 720 is fully soaked, the water level in the inner drum 720 gradually rises until it reaches the lowest point of the opening of the inner drum 720. At this time, if the water injection into the inner drum 720 continues, the washing water will overflow from the opening of the inner drum 720, enter the outer drum 710 through the gap between the opening of the inner drum 720 and the opening 7111 of the outer drum 710, and then flow out along the drain pipe 300. At this time, the water flowing out can be detected by the water immersion sensor 310.

[0119] In the above aspect, when the water immersion sensor 310 detects water flow, it triggers a corresponding feedback signal. When the control system of the washing device receives the feedback signal, it stops the water injection into the inner drum 720 and starts the washing or rinsing process.

[0120] In another aspect of the embodiment, the water immersion sensor can also be arranged on the bottom wall of the inner cavity of the outer drum, preferably near the rear end of the outer drum. When the washing water in the inner drum overflows, the water immersion sensor can also be triggered to control the water injection into the inner drum to stop.

[0121] In the embodiment, at the beginning of the dehydration stage, the washing device adopts a dehydration mode of water injection and dehydration at the same time, which increases the time and intensity of the washing of the laundry by clean water, and uses a large amount of spin-drying water to wash away the lint, so that the lint does not accumulate and the laundry is rinsed more thoroughly.

[0122] The outer drum assembly provided by the embodiment is integrally connected with the water storage tank 420, the stress at the connection is more uniform, the problem of stress concentration existing in the structure of the externally mounted water tank is avoided, and the durability of the outer drum assembly is stronger. Inside the outer drum assembly, the front partition 7112 and the rear partition 7124 form an overlapping structure, which can effectively block the flow of water between the outer drum 710 and the water storage tank 420 without additional sealing treatment. In combination with the inclined installation mode of the outer drum assembly, it can be ensured that the water in the outer drum 710 cannot enter the water storage tank 420, and the cleanliness of the water in the water storage tank 420 is ensured. In addition, even if a slight leakage occurs when the water storage tank 420 is full of water, the leakage will directly flow out through the outer drum 710 and the drain pipe 300, without affecting the use.

[0123] Embodiment Two

[0124] As shown in Figures 1 to 3 , and Figure 5 , and Figure 6 The difference between the embodiment and the above-mentioned embodiment one is that the inner drum 720 is provided with a dehydration hole to communicate the inner drum 720 and the outer drum 710.

[0125] In this embodiment, when the washing machine is running, the outer drum 710 is used to hold washing water, and the inner drum 720 is used to hold laundry. Further difference from the first embodiment is that the drain pipe 300 is provided with a drain valve 320. When the outer drum 710 holds water, the drain valve 320 is closed to cut off the drain pipe 300. During the draining and dewatering processes, the drain valve 320 is opened to drain water out of the washing machine along the drain pipe 300.

[0126] Further, in this embodiment, the water level detecting device can be directly arranged on the outer drum 710 to obtain the water inflow, without the need to arrange the water immersion sensor as described in the first embodiment.

[0127] As a specific implementation, the washing machine can adopt a conventional water inflow mode, i.e. the liquid outlet of the detergent dispenser is directly connected to the outer drum through a pipeline to inject the mixture of detergent and water into the outer drum, and then the mixture enters the inner drum through the dewatering holes on the inner drum to contact the laundry.

[0128] In the above scheme, the water storage tank is connected to an external water source and is only used to increase the overall mass of the outer drum assembly after water injection, thereby enhancing the anti-eccentricity capability and reducing vibration.

[0129] As another specific implementation, similar to the scheme of the first embodiment, the water storage tank 420 is connected to an external water source through the water injection pipe 410, connected to the inner drum 720 through the water inflow pipe 460, and the washing machine is provided with a water pump 440 to drive the water in the water storage tank 420 to directly inject into the inner drum 720 through the water inflow pipe 460.

[0130] More specifically, the flushing pipe 820 of the washing machine is connected to an external water source, and the outlet end of the flushing pipe 820 is connected to the detergent dispenser 830 to flush the distributor box of the detergent dispenser 830 to allow the detergent therein to mix with water and then be discharged. The inlet end of the water injection pipe 410 is connected to the detergent dispenser 830, and the outlet end is connected to the water storage tank 420 to guide the mixture of detergent and water into the water storage tank 420.

[0131] Further, in the above scheme, the washing machine is provided with a heating device 500 at the water storage tank 420 to heat the water in the water storage tank 420, and then inject the heated water into the inner drum 720.

[0132] On the one hand, the heating process helps to accelerate the dissolution process of the washing water, thereby facilitating the detergent to be more fully and uniformly dissolved before entering the inner drum 720. On the other hand, since the water in the water storage tank 420 has not contacted the laundry, it does not carry lint, thereby avoiding the problem of residual lint on the heating device 500, which poses a safety hazard.

[0133] In this embodiment, the other structures of the washing machine are the same as those in the first embodiment, and will not be described again.

[0134] In this embodiment, the washing apparatus has an outer tub 710 and an inner tub 720 which are in communication with each other, and water is stored in the outer tub 710 and the inner tub 720 is used to store laundry to perform washing. The water storage tank 420 below the outer tub 710 can increase the overall mass of the outer tub assembly by storing water, thereby enhancing the anti-eccentricity capability and reducing vibration.

[0135] When the water storage tank 420 is communicated with the inner tub 720 through the water inlet pipe 460, the washing apparatus can also use the water injection method of first injecting water into the water storage tank 420, and then using the water pump 440 to pump water into the inner tub 720. On the one hand, the water pump 440 is used to drive water injection to speed up the water injection efficiency, and on the other hand, the water storage tank 420 can be used to dissolve the detergent and heat the washing water in advance, thereby further improving the washing efficiency.

[0136] Embodiment Three

[0137] As shown in the figure, this embodiment is a further limitation of the above-mentioned embodiment one or two, and the washing apparatus is provided with a circulating pipe 430 which is in communication with the water storage cavity 420a, and the water pump 440 is arranged on the circulating pipe 430. The water pump 440 can extract water in the water storage cavity 420a to the circulating pipe 430, and flow back to the water storage cavity 420a along the circulating pipe 430, to form a microcirculation in the water storage cavity 420a. Figures 1 to 6 In the specific structure of this embodiment, the circulating pipe 430 is arranged outside the water storage tank 420, and the inlet end and the outlet end thereof are respectively connected to the corresponding openings of the water storage tank 420.

[0138] More specifically, the outer tub assembly is provided with a second joint 422 and a third joint 423 which are respectively in communication with the water storage cavity 420a, and are used to connect the circulating pipe 430. In the circulating process, the water in the water storage cavity 420a is sucked into the circulating pipe 430 through the second joint 422, and then reenters the water storage cavity 420a through the third joint 423.

[0139] In this embodiment, when the washing apparatus is filled with water, the mixed solution of the detergent and water is sent into the water storage tank 420 along the water injection pipe 410. The circulation flow of the mixed solution between the water storage tank 420 and the circulating pipe 430 driven by the water pump 440 can accelerate the dissolution of the detergent, and the mixed solution after the detergent is fully dissolved is sent into the inner tub 720. In this way, the presence of detergent residues in the water storage tank 420 can be avoided, which affects the washing and rinsing effect.

[0140]

[0141] ​Further, the washing device is provided with a heating device 500 for heating the water in the water storage tank 420. During the heating process, the water pump 440 is used to drive the circulation of the water, which can improve the heating efficiency, complete the heating process faster, and make the water temperature distribution in the water storage tank 420 more uniform, thereby achieving efficient and uniform heating effect. Moreover, the water circulates during the heating process, and the heating device 500 and the inner wall of the water storage tank 420 are less likely to deposit scale.

[0142] In a further scheme of the embodiment, the second joint 422 is arranged near the rear end of the water storage tank 420, and the third joint 423 is arranged near the front end of the water storage tank 420. Since the outer cylinder assembly is installed obliquely, the rear end of the water storage tank 420 is lower than the front end, and the second joint 422 for water outlet is arranged near the rear end of the water storage tank 420, so that the water outlet is more complete during the circulation.

[0143] In a preferred structure, the second joint 422 and the third joint 423 are arranged diagonally at the bottom of the water storage tank 420. For example, referring to Figure 4 and Figure 5 , the second joint 422 is arranged at the rear end right side area of the bottom of the water storage tank 420, and the third joint 423 is arranged at the front end left side area of the bottom of the water storage tank 420.

[0144] It can be understood that the arrangement positions of the second joint and the third joint can also be reversed, that is, the second joint is arranged at the rear end left side area of the bottom of the water storage tank, and the third joint is arranged at the front end right side area of the bottom of the water storage tank.

[0145] In a more specific structure, the second joint 422 and the third joint 423 can be arranged on the bottom wall of the water storage tank 420.

[0146] In another specific structure, the second joint and the third joint can also be arranged on the side wall of the water storage tank near the bottom area, so that the circulation pipe does not occupy the space below the water storage tank, and the volume of the water storage tank can be increased.

[0147] In a further scheme, the heating device 500 is arranged on the water storage tank 420 and near the arrangement position of the second joint 422. This arrangement can ensure a high circulation heating speed, and can be compatible with the existing heater structure. The existing heater can be used as the heating device 500 in the embodiment, which can save costs.

[0148] In a further scheme of the embodiment, the water pump 440 can be used to drive the circulation of the water in the water storage tank 420 and to drive the water in the water storage tank 420 to be injected into the inner cylinder 720.

[0149] Specifically, in the embodiment, the inlet end of the water inlet pipe 460 is in communication with the circulation pipe 430, and a control valve 450 is arranged on the waterway structure to cooperate with the water pump 440 to switch the water pump 440 to execute the first working state or the second working state.

[0150] The first working state executed by the water pump 440 refers to that the water pump 440 drives the water in the water storage tank 420 to enter the circulation pipe 430 and then return to the water storage tank 420 along the circulation pipe 430 to form microcirculation. The second working state executed by the water pump 440 refers to that the water pump 440 drives the water in the water storage tank 420 to enter the water inlet pipe 460 along the circulation pipe 430 and then inject the inner cylinder 720 along the water inlet pipe 460.

[0151] In the specific structure of the embodiment, the control valve 450 for controlling the on-off of the circulation pipe 430 is arranged on the circulation pipe 430 between the outlet end of the circulation pipe 430 and the water pump 440. The inlet end of the water inlet pipe 460 is connected to the region of the circulation pipe 430 between the water pump 440 and the control valve 450, and the outlet end is in communication with the inner cylinder 720. The water inlet pipe 460 is at least partially higher than the top of the water storage tank 420.

[0152] In the above scheme, the control valve 450 is a shut-off valve with only two states of opening and closing. When the control valve 450 is opened, the circulation pipe 430 is in communication. When the control valve 450 is closed, the circulation pipe 430 is cut off.

[0153] With the above structure, the water inlet pipe 460 has a portion higher than the top of the water storage tank 420, and the pipeline lift along the water inlet pipe 460 is much greater than the pipeline lift along the circulation pipe 430. When the control valve 450 is closed, the water discharged from the water outlet end of the water pump 440 can only flow to the water inlet pipe 460. However, when the control valve 450 is opened and the water pump 440 is started, the water discharged from the water outlet end of the water pump 440 can flow along the circulation pipe 430 to form a circulating flow, resulting in a decrease in the water pressure flowing to the water inlet pipe 460, which is insufficient to enter the inner cylinder 720 along the water inlet pipe 460, and thus the water basically does not flow to the water inlet pipe 460.

[0154] In a further scheme, the inlet end of the water inlet pipe 460 is connected to the middle region of the circulation pipe 430, which can further prevent water from flowing into the water inlet pipe 460 when the control valve 450 is opened.

[0155] In the embodiment, the water in the water storage cavity 420a flows out through the second joint 422 in both the circulating process and the water injection process to the inner cylinder 720. By arranging the second joint 422 at a lower position at the rear end of the water storage tank 420, the water discharge of the water storage tank 420 can be ensured to be more thorough in both the circulating process and the water injection process to the inner cylinder 720.

[0156] In a detailed structure of the embodiment, the circulation pipe 430 at least comprises a front main section and a circulation rear section. One end of the front main section is connected to the second joint 422, and the other end is connected to a tee structure. The other two openings of the tee structure are connected to the water inlet pipe 460 and the circulation rear section of the circulation pipe 430 respectively. The circulation rear section is connected to the third joint 423, and the control valve 450 is arranged on the circulation rear section.

[0157] In detail, the water inlet pipe 460 extends from the inlet end to the front side, extends upwards to a height higher than the window pad 210 on the front side of the outer cylinder 710, and then bends downwards through the top of the window pad 210, bends towards the direction of the cylinder opening of the inner cylinder 720 on the observation window of the machine door 200, and the outlet end is arranged towards the cylinder opening of the inner cylinder 720.

[0158] In further structure, the first joint 421 for connecting the water injection pipe 410 is arranged at the front end of the front cylinder integral part 711, close to the top wall of the water storage cavity 420a, i.e. close to the front partition part 7112. In this way, the outlet end of the water injection pipe 410 is connected to the area close to the top of the water storage tank 420, and after the water storage tank 420 is filled with water, it can ensure that there is no liquid remaining in the water injection pipe 410.

[0159] If there is liquid remaining in the water injection pipe 410, this part of the remaining liquid is difficult to participate in the circulation process driven by the water pump 440, which can easily cause uneven water heating, or insufficient and uneven detergent mixing problems.

[0160] More specifically, the first joint 421 is arranged close to the side where the detergent dispenser 830 is located. In this way, the water injection pipe 410 extends downward from the bottom of the detergent dispenser 830, can avoid the window pad 210 and the surrounding structure at the cylinder opening 7111 of the outer cylinder 710, and is connected to the first joint 421.

[0161] The working process of the washing equipment provided in the embodiment is as follows.

[0162] When the washing equipment is filled with water, the water inlet valve 810 is opened, and tap water enters the distributor box of the detergent dispenser 830 through the flushing pipe 820, and the detergent is flushed out of the distributor box to form a mixed liquid with tap water and is discharged from the detergent dispenser 830 to enter the water storage tank 420 through the water injection pipe 410.

[0163] The control valve 450 is in the open state by default, and the water pump 440 is started to drive the liquid in the water storage tank 420 to flow along the circulation pipe 430 to form a circulating flow, so that the liquid in the water storage tank 420 is continuously pumped out through the second joint 422 and then returned to the water storage tank 420 through the third joint 423, so that the detergent and water are fully mixed and dissolved. When the washing water needs to be heated, the heating device 500 can be turned on during the circulation process to heat the liquid flowing through the heating device 500. During the heating process, the water flows in a circulating flow, which can improve the heating efficiency, speed up the heating, and prevent scale from depositing on the inner wall of the heating device 500 and the water storage tank 420.

[0164] After the detergent is fully dissolved and the heating is completed, the control valve 450 is closed, and the water pump 440 is operated to drive the liquid in the water storage tank 420 to flow into the inner drum 720 through the water inlet pipe 460. Since the water entering the inner drum 720 is fully dissolved, the washing effect is better.

[0165] In this embodiment, the washing device is provided with a circulation pipe 430 connected to the water storage tank 420, so that when there is water in the water storage tank 420, the water can be circulated to accelerate the dissolution of the detergent, and then the washing water with fully and uniformly dissolved detergent is injected into the inner drum 720 to ensure the washing effect of the clothes. When the washing water needs to be heated, the circulation and heating can be performed simultaneously to improve the heating efficiency, save the heating time, and make the heating more uniform.

[0166] The circulation of water in the water storage tank 420 and the injection of water from the water storage tank 420 into the inner drum 720 are driven by the same water pump 440, and only the control valve 450 with on-off control function cooperates with the water pump 440 to switch the water flow between the circulation along the circulation pipe 430 and the injection into the inner drum 720 along the water inlet pipe 460. Therefore, a three-way switching valve with a complex structure is not needed, and multiple water flow driving devices are not needed, so that the water control structure is simplified. In addition, the water flow driven by the water pump 440 is not in contact with the clothes, so it does not carry lint, and there is no problem of lint entanglement causing the water pump 440 to malfunction, so a lint filter cooperating with the water pump 440 is not needed.

[0167] Embodiment Four

[0168] The embodiment provides a control method of the washing device in the above-mentioned embodiment three.

[0169] As shown in Figures 1 to 6 the control method of the washing device in the embodiment includes:

[0170] The control valve 450 switches the water pump 440 to execute the first working state, starts the water pump 440, and drives the water in the water storage tank 420 to flow along the circulation pipe 430 to form a circulating flow.

[0171] The control valve 450 switches the water pump 440 to execute the second working state, starts the water pump 440, and drives the water in the water storage tank 420 to flow into the inner cylinder 720 through the water inlet pipe 460.

[0172] More specifically, in the washing apparatus in the embodiment, opening the control valve 450 can switch the water pump 440 to execute the first working state, and closing the control valve 450 can switch the water pump 440 to execute the second working state. Therefore, the control method of the washing apparatus specifically includes:

[0173] opening the control valve 450, starting the water pump 440, and driving the water in the water storage tank 420 to form a circulating flow through the circulating pipe 430;

[0174] and closing the control valve 450, starting the water pump 440, and driving the water in the water storage tank 420 to flow into the inner cylinder 720 through the water inlet pipe 460.

[0175] As a specific implementation, the control valve 450 is in a default open state, and is closed only when water is injected into the inner cylinder 720.

[0176] In the above scheme, the water pump 440 can provide power for both the circulating process and the water injection into the inner cylinder 720. When the liquid flow mode in the water storage tank 420 is changed, only the action of opening or closing the control valve 450 needs to be performed, and the control logic is simple and easy to implement.

[0177] In a further scheme of the embodiment, in the last rinsing stage of the washing program, the washing apparatus injects water into the water storage tank 420 to reach a preset water injection amount. After the washing apparatus completes the operation of the current washing program and is powered off, the control valve 450 is kept in an open state after the washing apparatus is powered on again before the washing program is started, and the heating device 500 and the water pump 440 are started to circulate and heat the water in the water storage tank 420. After the washing program is started, the control valve 450 is kept in an open state, and the heating device 500 and the water pump 440 are kept in a running state. When it is detected that the water in the water storage tank 420 reaches a set temperature, the control valve 450 is closed, and the water pump 440 runs to inject the water in the water storage tank 420 into the inner cylinder 720 through the water inlet pipe 460.

[0178] Further, the water level detection device, such as a water level sensor, is arranged in the water storage tank 420 in the embodiment. The washing apparatus can determine the water injection amount injected into the water storage tank 420 according to the water level detection result fed back by the water level detection device. Meanwhile, when the washing apparatus injects water from the water storage tank 420 into the inner cylinder 720, the water level detection result fed back by the water level detection device can also be used to determine whether the water in the water storage tank 420 has been completely injected into the inner cylinder 720, so as to accurately control the water injection amount of the inner cylinder 720.

[0179] It can be understood that the washing apparatus of the present embodiment can only inject water into the inner tub 720 through the water storage tank 420. Therefore, the above-mentioned "injecting water into the water storage tank 420 in the last rinsing stage of the washing course" refers to the operation of injecting a certain amount of water into the water storage tank 420 after the water injection operation from the water storage tank 420 to the inner tub 720 is completed in the last rinsing stage.

[0180] The "preset water injection amount" refers to the minimum amount of water that can form a circulation in the water storage tank 420 under the driving of the water pump 440 and can start the heating device 500 to heat. More specifically, the "preset water injection amount" is slightly less than the minimum water consumption in the washing stage of the washing course in which the washing apparatus is operated. In this way, if the water consumption in the washing stage of the washing course in which the washing apparatus is operated next time is exactly the above-mentioned minimum water consumption, no separate water injection is required in addition to the normal water injection for washing the detergent. If the water consumption in the washing stage of the washing course in which the washing apparatus is operated next time is more than the above-mentioned minimum water consumption, water can be continuously injected into the water storage tank 420 during the process of mixing the detergent and / or heating the washing water until the water consumption in the washing stage is reached. Through the above-mentioned design, the water injection speed can be ensured, and at the same time, sufficient detergent concentration can be ensured.

[0181] The "set temperature" refers to the set temperature of the washing water in the present washing course, such as 40°C.

[0182] Through the above-mentioned scheme, the washing apparatus injects and stores a certain amount of water in the water storage tank 420 before the final dehydration stage of each washing course. After the washing apparatus is started again, the heating device 500 and the water pump 440 can be started before the user sets the washing course or even before the user closes the door 200, so that the water in the water storage tank 420 can be heated in advance. In this way, when the washing course is started, the water in the water storage tank 420 can reach the set temperature more quickly, and then be injected into the inner tub 720 to start washing, saving the time for heating the washing water and improving the clothes washing efficiency. At the same time, the circulation of the water in the water storage tank 420 during the heating process can further improve the heating efficiency.

[0183] On the other hand, the washing apparatus injects water into the water storage tank 420 in the last rinsing stage of each washing course, and a certain amount of water is stored in the water storage tank 420 in the final dehydration stage after the last rinsing stage, so that the mass of the components connected to the outer tub 710 can be increased, acting as a counterweight at the bottom of the outer tub 710, and the vibration amplitude of the outer tub 710 during dehydration can be greatly reduced. Moreover, since the water storage tank 420 is not filled with water, the shaking of the water can also offset a part of the vibration of the inner tub 720.

[0184] Since the water stored in the water storage tank 420 is substantially the minimum amount of water required in the washing stage of all washing programs, the washing apparatus needs to perform the operation of supplementing water to the water storage tank 420 after the washing program is started. In order to match the final amount of water in the water storage tank 420 with the actual amount of water used in the washing stage of the actual washing program, the washing apparatus of the embodiment further performs the following control process.

[0185] The operation of supplementing water to the water storage tank 420 is started after the washing program is started. At the same time, the washing apparatus obtains the amount of laundry in the inner tub 720, determines the amount of water used in the washing stage according to the amount of laundry, supplements water to the water storage tank 420 to the water level corresponding to the amount of water, and then injects water heated to the set temperature into the inner tub 720.

[0186] As a specific embodiment, after the washing apparatus receives the starting instruction of the washing program and detects that the machine door 200 is closed, the water inlet valve 810 is opened, tap water is injected to flush the dispenser box of the detergent injection device 830, the detergent is injected into the water storage tank 420 together with the tap water, and the water in the water storage tank 420 is heated together. At the same time that the water inlet valve 810 is opened, the weighing system of the washing apparatus obtains the amount of laundry in the inner tub 720 by weighing.

[0187] After the weighing is completed, the amount of water used in the washing stage is determined according to the obtained amount of laundry, the water inlet valve 810 remains open to continue supplementing water to the water storage tank 420. When the water storage tank 420 reaches the water level corresponding to the amount of water used in the washing stage, the water inlet valve 810 is closed.

[0188] During the process of supplementing water to the water storage tank 420, and after the supplementing of water is completed, the heating device 500 and the water pump 440 remain in the running state, continuously heating and dissolving and mixing the detergent by using the circulation process. When it is detected that the water in the water storage tank 420 reaches the set temperature, the control valve 450 is closed, and the water pump 440 is operated to inject the mixed liquid containing the detergent which is fully mixed and reaches the standard temperature into the inner tub 720.

[0189] In the above scheme, since the water is not in contact with the inner tub 720 during the process of injecting water into the water storage tank 420, the weighing can be performed while the water is being injected, thereby shortening the overall washing time.

[0190] In a further scheme of the embodiment, the washing apparatus injects water into the water storage tank 420 during the washing stage and / or the intermediate rinsing stage of the washing program, and the amount of water injected is the amount of water used in the next rinsing stage. When water is injected in the next rinsing stage, the control valve 450 is closed, and the water pump 440 is started to inject the water in the water storage tank 420 into the inner tub 720 along the water inlet pipe 460.

[0191] As a specific embodiment, during the washing stage, the washing machine opens the water inlet valve 810 to continuously fill water into the water storage tank 420 until the water level in the water storage tank 420 reaches a water level corresponding to the water consumption of the next rinsing stage, and then closes the water inlet valve 810. After the washing stage, the main washing drainage and dehydration are performed, and in particular, at the beginning of the main washing dehydration, the vibration amplitude is the largest. Since a large amount of water has been stored in the water storage tank 420 at this time, the mass of the assembly connected to the outer drum 710 is increased, and the dehydration vibration can be greatly reduced.

[0192] After the main washing dehydration is completed, the control valve 450 is closed, and the water pump 440 is started to quickly inject the water in the water storage tank 420 into the inner drum 720. Since the water injection process into the inner drum 720 is driven by the water pump 440, the water injection speed is much greater than the water inlet speed of tap water, and the time required for the water inlet operation is shortened, thereby further reducing the overall washing time.

[0193] Similarly, during each intermediate rinsing stage, the washing machine opens the water inlet valve 810 to continuously fill water into the water storage tank 420 until the water level in the water storage tank 420 reaches a water level corresponding to the water consumption of the next rinsing stage, and then closes the water inlet valve 810. After the current intermediate rinsing stage is completed, the intermediate rinsing drainage and dehydration are performed, and at this time, the water storage in the water storage tank 420 is beneficial to reduce the vibration amplitude of the outer drum 710 during the dehydration process. After the intermediate rinsing dehydration is completed, the control valve 450 is closed, and the water pump 440 is started to inject the water in the water storage tank 420 into the inner drum 720, and the next rinsing can be started.

[0194] In the above scheme, the water is stored in the water storage tank 420 for a long time, which increases the mass of the overall assembly of the outer drum 710, and in each dehydration stage, the washing machine is more stable, the vibration is smaller, and the working noise is low. Moreover, since the vibration is greatly reduced, the reserved gap between the drum wall of the outer drum 710 and the machine shell 100 can be greatly reduced, and in the case of not changing the overall size of the machine, the drum diameter of the outer drum 710 and the inner drum 720 can be improved, thereby improving the washing capacity.

[0195] The water stored in the water storage tank 420 is used for the next washing / rinsing stage, which is fresh water and will not deteriorate. Each time the washing machine injects water into the inner drum 720, it is directly injected by the water pump 440, which greatly saves the water inlet time compared to the direct injection by tap water in the prior art, thereby shortening the overall washing time.

[0196] In the embodiment, the washing apparatus injects a certain amount of water into the water storage tank 420 before each washing program ends, so as to prepare for the next washing program. The water in the water storage tank 420 can be heated in advance before the next washing program starts, thereby saving the heating time and shortening the overall washing time. During the operation of each stage, the water storage tank 420 is injected with the water required by the next stage. When the water is injected into the inner drum 720, the water pump 440 is driven to inject the water into the inner drum 720, thereby shortening the water injection time and further shortening the overall washing time. In addition, the water storage tank 420 has a certain water storage capacity during each dehydration process, which increases the mass of the components connected to the outer drum 710, thereby greatly reducing the vibration amplitude of the outer drum 710 and making the operation of the washing apparatus more stable.

[0197] Embodiment Five

[0198] The embodiment provides a heating control method of the washing apparatus in any one of the above-mentioned embodiments one to three.

[0199] Specifically, as shown in Figures 1 to 6 the heating control method of the washing apparatus in the embodiment includes:

[0200] The washing apparatus obtains a target heating temperature T0 of the current operation and a washing water amount H0;

[0201] The water pump 440 is started, and the washing water is injected from the water storage cavity 420a into the inner drum 720 to reach a first water injection amount H1, and the water pump 440 is closed, wherein H1

[0202] The heating device 500 operates to heat the remaining water in the water storage cavity 420a;

[0203] When the water temperature in the water storage cavity 420a reaches a set temperature T1, the water pump 440 is started again, and the washing water is injected from the water storage cavity 420a into the inner drum 720 to reach a second water injection amount H2, and the water pump 440 is closed, wherein T1

[0204] It can be understood that, in the embodiment, the water level sensor can be arranged in the water storage tank 420, or the flow sensor can be arranged in the water inlet pipe 460, so as to obtain the amount of washing water injected from the water storage cavity 420a into the inner drum 720.

[0205] In the above scheme, for the case of heating the washing water, the washing apparatus first injects part of the washing water from the water storage cavity 420a into the inner drum 720, and then continues to heat the remaining water in the water storage tank 420a to a set temperature T1 higher than the target heating temperature T0, and then injects the remaining water into the inner drum 720 to mix with the injected washing water, so as to obtain the washing water with the target heating temperature T0, which is beneficial to improve the heating efficiency and further shorten the overall washing time of the washing program.

[0206] Further, after the first water injection amount H1 of washing water is injected into the inner tub 720 from the water storage cavity 420a, the inner tub 720 is controlled to start rotating, so that the laundry in the tub is fully contacted with the mixed solution of washing agent and water. In this way, the washing process and the water heating process can be performed synchronously, and the overall washing time is further shortened.

[0207] In a further scheme of the embodiment, after the washing program is started, the washing apparatus starts injecting water into the water storage tank 420 and detects the initial water temperature Ts in the water storage tank 420. Meanwhile, the washing apparatus acquires the amount of laundry in the inner tub 720, determines the washing water amount H0 according to the amount of laundry, and injects water into the water storage tank 420 to the water level corresponding to the washing water amount H0.

[0208] During the process of injecting water into the water storage tank 420, the control valve 450 is kept in an open state, and the water pump 440 is operated to fully dissolve the washing agent. After a period of time, the control valve 450 is closed, the water pump 440 is operated to inject the first water injection amount H1 of washing water into the inner tub 720, and then the water pump 440 is closed.

[0209] The driving motor 600 is started to drive the inner tub 720 to rotate and drive the laundry in the tub to overturn.

[0210] The control valve 450 is opened, the water pump 440 is started to circulate, and the heating device 500 is started to heat. When it is detected that the water temperature in the water storage cavity 420a reaches the set temperature T1, the control valve 450 is closed, the water pump 440 is operated to inject washing water from the water storage cavity 420a into the inner tub 720, and after the second water injection amount H2 of washing water is injected, the water pump 440 is closed.

[0211] As a specific implementation, the heating device 500 itself is provided with a temperature sensor for acquiring the initial water temperature Ts in the water storage tank 420 and detecting the water temperature in the water storage cavity 420a during the heating process.

[0212] In the above scheme, the washing apparatus determines the value of the set temperature T1 according to the initial water temperature Ts, the target heating temperature T0, and the ratio H1 / H0 of the first water injection amount H1 to the washing water amount H0.

[0213] In a specific scheme, the first water injection amount H1 is half of the washing water amount H0, and the value of the set temperature T1 satisfies T1=2×T0-Ts.

[0214] For example, the initial water temperature Ts is 20℃, the target heating temperature T0 is 40℃, the washing water amount H0 is 20 liters, and the first water injection amount H1 is 10 liters. At this time, the remaining 10 liters of washing water is heated to 60℃, and then pumped into the inner tub 720 by the water pump 440, so that the washing water of 40℃ is obtained by mixing.

[0215] In another specific solution, the value of the set temperature T1 needs to be corrected in consideration of heat dissipation during the process. Specifically, when the first water injection amount H1 is half of the washing water amount H0, the value of the set temperature T1 is: T1 = 2 x T0 - Ts + AT. Wherein, AT is a temperature correction value, AT > 0. It can be understood that the specific value of AT can be measured by experiment in advance.

[0216] For example, for the case that the initial water temperature Ts is 20℃, the target heating temperature T0 is 40℃, the washing water amount H0 is 20 liters, and the first water injection amount H1 is 10 liters, AT is 5℃, that is, the remaining 10 liters of washing water is heated to 65℃ and then injected into the inner drum 720.

[0217] In a further solution of the embodiment, for the structure that the water storage tank 420 is connected with the circulation pipe 430, since the detergent can be fully dissolved before being injected into the inner drum 720, the washing effect of the ordinary washing machine can be achieved without heating. Therefore, the above-mentioned heating control method can be applied only in some special programs, such as the stubborn stain washing program.

[0218] In the embodiment, the water is injected into the inner drum 720 in batches, a part of the normal temperature tap water is first injected into the inner drum 720, so that the clothes can contact the washing water with detergent and start the washing process, and then the remaining washing water is heated to a higher temperature and injected into the inner drum 720, and after mixing, the washing water with the target heating temperature T0 is obtained, and the washing process continues, which can shorten the washing time and improve the efficiency.

[0219] Embodiment six

[0220] The difference between the embodiment and the above-mentioned embodiments three to five is that the circulation pipe and the water pump are integrally arranged inside the water storage cavity of the water storage tank.

[0221] Specifically, in the embodiment, the inlet end and the outlet end of the circulation pipe are located in the water storage cavity, and no opening for connecting the circulation pipe is needed on the water storage tank. The inlet end of the water inlet pipe is connected with the circulation pipe in the water storage cavity, and a through hole structure is formed on the water storage tank, and the water inlet pipe is sealingly arranged in the through hole structure, so as to extend upward from the inside of the water storage tank to supply water to the inner drum.

[0222] In a further structure, the control valve is arranged between the connection position of the water inlet pipe and the outlet end of the circulation pipe. Alternatively, the control valve can also be arranged directly at the outlet end of the circulation pipe.

[0223] When the control valve is opened, the water pump is started, and the water flow can flow along the circulation pipe, so that the water pressure is not enough to pump the water flow to the highest position of the water inlet pipe, and thus the water in the water storage tank only forms an internal circulation along the circulation pipe and cannot be injected into the inner drum. When the control valve is closed, the water pump can only drain water in the direction of the water inlet pipe, so as to inject water into the inner drum.

[0224] In the scheme of the embodiment, the circulating pipe and the water pump are integrally arranged inside the water storage tank, without occupying the space outside the periphery of the water storage tank, so that the volume of the water storage tank can be further increased, and a larger water storage capacity can be achieved without increasing the overall volume.

[0225] Embodiment Seven

[0226] The difference between the embodiment and the above-mentioned embodiments three to six is that the control valve is a three-way switching valve, and the water pump is switched to different working states by switching the communication direction of the pipeline.

[0227] Specifically, in the embodiment, the control valve has an inlet, a first outlet and a second outlet, and the first outlet and the second outlet can be controlled to be selectively communicated with the inlet. The inlet and the first outlet are connected to the circulating pipe, and the second outlet is used to connect the water inlet pipe.

[0228] More specifically, the control valve is arranged on the circulating pipe and located downstream of the water pump. The inlet of the control valve is communicated with the water outlet end of the water pump, and the first outlet of the control valve is communicated with the water storage tank. The inlet end of the water inlet pipe is connected to the second outlet of the control valve.

[0229] In the embodiment, when the inlet and the first outlet of the control valve are communicated, the water outlet end of the water pump and the water storage cavity are communicated, and at the same time, the communication between the water inlet pipe and the circulating pipe is cut off. At this time, the water pump can execute the first working state, and the water in the water storage tank forms a microcirculation along the circulating pipe.

[0230] When the inlet and the second outlet of the control valve are communicated, that is, the water inlet pipe and the circulating pipe are communicated, and the water outlet end of the water pump and the water storage cavity are no longer communicated. At this time, the water pump can execute the second working state, and the water in the water storage tank is injected into the inner cylinder along the water inlet pipe.

[0231] As a specific embodiment, the circulating pipe is arranged outside the water storage tank, and the second joint and the third joint are arranged on the water storage tank to connect the circulating pipe. The specific connection position and manner of the circulating pipe and the water storage tank can refer to any one of the schemes in embodiment three, which will not be described here.

[0232] As another specific embodiment, the circulating pipe and the water pump can be integrally arranged inside the water storage tank, and the water inlet pipe is sealed through the wall of the water storage tank and connected to the control valve inside the water storage tank.

[0233] In the embodiment, a three-way switching valve is used as the control valve, and the switching control of different working states of the water pump during operation is realized by switching the communication direction of the control valve, so that the purpose of driving the circulation and driving the water injection into the inner cylinder by using one water pump can also be achieved.

[0234] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any skilled person in the art can make some changes or modifications to the above-mentioned technical content with the above-mentioned prompt as equivalent embodiments with equivalent changes, but as long as it does not deviate from the technical solution of the present application, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application are still within the scope of the present application.

Claims

1. An outer cylinder assembly characterized by, The application relates to a washing device, which comprises: a front barrel integral part, which is integrally formed with a barrel opening and a front barrel cavity, and a front water storage cavity which is arranged separately from the front barrel cavity and has a front separation part for separating the front barrel cavity and the front water storage cavity; a rear barrel integral part, which is integrally formed with a rear barrel cavity and a rear water storage cavity which are arranged separately, and has a rear separation part for separating the rear barrel cavity and the rear water storage cavity; the rear barrel integral part is connected to the end of the front barrel integral part which is away from the barrel opening, the front barrel cavity and the rear barrel cavity are connected in series to form an inner cavity of an outer barrel, and the front water storage cavity and the rear water storage cavity are connected in series to form a water storage cavity; the water storage cavity is arranged below the outer barrel, and the front separation part and the rear separation part at least partially overlap in the vertical direction.

2. The outer barrel assembly of claim 1, wherein, the end of the front barrel integral part which is away from the barrel opening is a first open end, the front separation part is arranged to extend from the end of the front barrel integral part which has the barrel opening to the first open end, and the extension end of the front separation part protrudes from the first open end; and / or the end of the rear barrel integral part which is connected to the front barrel integral part is a second open end, the rear separation part is arranged to extend from the other end of the rear barrel integral part to the second open end, and the extension end of the rear separation part protrudes from the second open end.

3. The outer barrel assembly of claim 2, wherein, the thickness of the front separation part is smaller in the region close to the extension end of the front separation part than in the region close to the starting end of the front separation part; the thickness of the rear separation part is smaller in the region close to the extension end of the rear separation part than in the region close to the starting end of the rear separation part.

4. The outer barrel assembly according to claim 2 or 3, characterized in that a sealing part is arranged between the front barrel integral part and the rear barrel integral part, and the sealing part surrounds the first open end in the circumferential direction; the front barrel integral part and the rear barrel integral part are connected by fasteners, and a plurality of fasteners are arranged to be distributed in the circumferential direction of the first open end.

5. A washing apparatus characterized by comprising: The application further relates to a washing device which comprises the outer barrel assembly as described in any one of claims 1 to 4, and a rotatable inner barrel which is arranged in the inner cavity of the outer barrel.

6. The washing apparatus according to claim 5, wherein The central axis of the outer barrel is arranged to be inclined relative to the horizontal direction, and the end of the front barrel integral part is higher than the end of the rear barrel integral part; Preferably, the length of the front barrel integral part in the axial direction of the outer barrel is smaller than the length of the rear barrel integral part in the axial direction of the outer barrel.

7. The washing apparatus according to claim 6, characterized by The washing device is provided with a drain pipe, and the water inlet end of the drain pipe is connected to the rear barrel integral part and communicates with the inner cavity of the outer barrel. Preferably, the water inlet end of the drain pipe is connected to the end of the rear barrel integral part which is away from the front barrel integral part and is close to the bottom of the outer barrel.

8. The washing apparatus according to claim 7, characterized by The inner barrel can be independently filled with water during the washing process. The washing device is provided with a water immersion sensor. The water immersion sensor is arranged on the bottom wall of the inner cavity of the outer barrel or in the drain pipe.

9. The washing apparatus according to any one of claims 5 to 8, characterized by, The washing device is provided with a water inlet pipe, the inlet end of which communicates with the water storage cavity, and the outlet end of which communicates with the inner barrel. The washing device is provided with a circulation pipe which communicates with the water storage cavity, and a water pump is arranged on the circulation pipe, and the inlet end of the water inlet pipe communicates with the circulation pipe. The washing device is provided with a control valve, and the water pump can be switched to execute a first working state or a second working state through the control valve. When the water pump executes the first working state, the water in the water storage cavity is driven to enter the circulation pipe, to return to the water storage cavity along the circulation pipe, and to form a circulation; when the water pump executes the second working state, the water in the water storage cavity is driven to enter the water inlet pipe along the circulation pipe, and to be injected into the inner barrel along the water inlet pipe. Preferably, the washing device is provided with a heating device for heating water in the water storage cavity; More preferably, the outer cylinder assembly has a circulating water outlet communicating with the water storage cavity, and when the water pump is in the first working state, water in the water storage cavity enters the circulating pipe through the circulating water outlet; the heating device is arranged in the water storage cavity close to the circulating water outlet.

10. A heating control method of a washing apparatus as claimed in any one of claims 5 to 9, characterized in that, The washing device has a water inlet pipe, an inlet end of which is in communication with the water storage cavity, and an outlet end of which is in communication with the inner cylinder; The washing device is provided with a heating device for heating water in the water storage cavity, and a water pump for driving water in the water storage cavity to flow into the inner cylinder along the water inlet pipe; The washing device obtains a target heating temperature T0 for this operation and a washing water amount H0; The water pump is started to inject washing water from the water storage cavity into the inner cylinder to reach a first water injection amount H1, and then the water pump is stopped, wherein H1 < H0; The heating device is operated to heat the remaining water in the water storage cavity; When the water temperature in the water storage cavity reaches a set temperature T1, the water pump is started again to inject washing water from the water storage cavity into the inner cylinder to reach a second water injection amount H2, and then the water pump is stopped, wherein T1 > T0 and H2 = H0 - H1.

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