WO2020173290A1

WO2020173290A1 - Front-loading washing machine

Info

Publication number: WO2020173290A1
Application number: PCT/CN2020/074379
Authority: WO
Inventors: 赵志强; 吕佩师; 许升
Original assignee: 青岛海尔滚筒洗衣机有限公司; 海尔智家股份有限公司
Priority date: 2019-02-25
Filing date: 2020-02-06
Publication date: 2020-09-03
Also published as: JP2022524946A; JP7293373B2

Abstract

Disclosed is a front-loading washing machine, comprising: a shell; an inner tub arranged inside the shell; a water inlet structure arranged on the shell and guiding a water flow provided by an external water supply system into the shell of a washing machine; a water inlet provided in the inner tub and making the interior of the inner tub be in communication with the exterior thereof; and an inlet water flow channel for guiding the water flow guided from the water inlet structure to a nozzle provided spaced apart from the water inlet, wherein the water flow sprayed from the nozzle is sprayed into the water inlet via the spacing, and is conveyed into the inner tub. According to the present invention, the problem of dirt accumulation between an outer wall of the inner tub and an inner wall of an outer tub is solved, thereby realizing the flow of water into the hole-free inner tub, without influencing the rotation of the inner tub.

Description

A drum washing machine Technical field

The invention belongs to the field of household appliances, and specifically relates to a drum washing machine. Background technique

Existing drum washing machines generally include an inner tube and an outer tube that are fitted with each other. The outer tube is a water tub. The inner tube is used to hold clothes, and the inner tube is rotated to tumbling and washing the clothes. There is a space between the inner tube and the outer tube. There is a gap, and dirt will accumulate after the washing machine is used for a period of time. Because the inner and outer tubs are fitted together, it is impossible to directly clean the outer wall of the inner tub and the inner wall of the outer tub. This will increase the bacteria inside the washing machine and affect the health of users. Users can only achieve this by removing the inner tub. Cleaning the outer wall of the inner cylinder and the inner wall of the outer cylinder.

In order to solve the above problems, the inner drum of the drum washing machine is designed as a non-porous inner drum, which can not only hold water but also wash clothes. The non-porous washing machine solves the problem of dirt accumulation between the inner drum and the outer drum, and at the same time, reduces This caused a waste of water resources. However, the water inflow problem of the non-porous inner cylinder is more difficult, and how to achieve efficient and reliable water inflow is an urgent problem to be solved. In view of this, the present invention is proposed. Summary of the invention

The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a drum washing machine, which aims to solve the problem of dirt accumulated between the inner wall of the inner tube and the inner wall of the outer tube of the drum washing machine and is difficult to clean. Another purpose is Solve the water inlet problem of the drum washing machine. In order to solve the above technical problems, the basic idea of the technical solution adopted by the present invention is: a drum washing machine, including a casing; an inner tube arranged inside the casing; a water inlet structure arranged on the casing, and an external water supply system The provided water flow is introduced into the casing of the washing machine; the water inlet is arranged on the inner cylinder and communicates with the inside and outside of the inner cylinder; the water inlet flow channel diverts the water flow introduced by the water inlet structure to the nozzle provided with a gap with the water inlet, and the water is ejected from the nozzle The water flows across the gap and is sprayed to the water inlet and delivered to the inner cylinder.

Further, the water inlet end of the water inlet channel is communicated with the water inlet structure, and the water outlet end of the water inlet channel passes through the outer cylinder wall, and a spout is formed on the side of the outer cylinder wall facing the inner cylinder, and the spout is aligned with the water inlet at intervals Set up.

Further, a pressure boosting device that increases the pressure of the flowing water is installed on the water inlet channel, so that the nozzles spray the water outward. Further, the drum washing machine includes an outer tub, the inner tub is sleeved inside the outer tub and rotates relative to the outer tub, the central axis of the inner tub and the outer tub extend horizontally, and the water inlet is provided at the bottom of the inner tub, at least partially The water flow path is parallel to the inner, The direction of the central axis of the outer cylinder passes through the bottom wall of the outer cylinder, and the spout of the water inlet channel faces the direction of the water inlet.

Further, the distance from the center of the water inlet to the center of the bottom of the inner cylinder is d, and the diameter of the inner cylinder is D, where 0.033^d/D<0.9; preferably, 0.07^d/D< 0.4; More preferably, 0.1 d/D<0.22. Further, a positioning mechanism is provided between the inner cylinder and the outer cylinder. During the water intake process, the inner cylinder is stopped at a set position under the action of the positioning mechanism, so that the nozzle of the water inlet channel is aligned with the water inlet on the wall of the inner cylinder. coincide. Further, the inner cylinder is a non-porous inner cylinder without dewatering holes on the cylinder wall. Further, the shape of the spout is tapered, and the diameter of the end of the spout facing the water inlet is smaller than the diameter of the water inlet channel, so as to increase the water flow pressure sprayed from the spout and reduce the diameter of the water column sprayed out. Further, the water inlet is a tapered hole, and the diameter of the water inlet on the side facing the inner cylinder is larger than the diameter on the side facing the spout. Further, the diameter of the side of the spout facing the water inlet is smaller than the diameter of the side of the water inlet facing the spout. After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

1. The inner tube of the drum washing machine in the present invention is a non-porous inner tube. When washing, the inner tube contains washing water for washing, which solves the problem of dirt accumulation between the outer wall of the inner tube and the inner wall of the outer tube. At the same time, the present invention provides A non-porous inner tub water inlet method realizes the delivery of water to the inner tub without affecting the rotation of the inner tub for washing.

2. In the present invention, a water inlet channel is provided at the bottom of the outer cylinder to divert the water flow introduced by the water inlet structure to the spout provided on the outer cylinder and facing the water inlet of the inner cylinder. The water jet from the spout passes over the inner and outer cylinders. It is sprayed to the water inlet and transported to the inner cylinder between the gaps, and there is no need to add additional water inlet pipes, which saves installation space.

3. A pressurizing device is installed on the water inlet channel to increase the water pressure in the water inlet channel, so that the water in the water inlet channel is sprayed into the inner tube through the water inlet at a certain speed, and the clothes in the inner tube can be washed to improve the clothes. Washing ratio. The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, and also provides a drum washing machine. Its purpose is to solve the problem of dirt accumulated between the inner wall of the inner tube and the inner wall of the outer tube of the drum washing machine, and it is difficult to clean. The purpose is to provide a solution to the water intake problem of the drum washing machine. In order to solve the above-mentioned technical problems, the basic idea of the technical solution adopted by the present invention is: a drum washing machine, including a shell, a decorative door is arranged on the front panel of the shell; an outer tube; an inner tube, which is sleeved inside the outer tube and opposite to The outer tub rotates, and the inner tub is equipped with a sealed door that opens and closes the opening for users to put clothes in; the water inlet structure is arranged on the shell, and the water flow provided by the external water supply system is introduced into the washing machine shell; the water inlet is arranged at On the sealed door, Connecting the inside and outside of the inner cylinder; the water inlet channel, which guides the water flow introduced by the water inlet structure to the spout provided on the decorative door and facing the water inlet of the inner cylinder, and the water jet from the spout passes between the sealed door and the decorative door The gap between them is sprayed to the water inlet and delivered to the inner cylinder.

Further, the water inlet end of the water inlet channel extends to the water inlet structure, and at least part of the water inlet channel extends along the interior of the decorative door, and a spout is formed on the side of the decorative door facing the inner cylinder, and the direction of the spout is perpendicular to the water inlet channel In the extension direction inside the decorative door, the spout and the water inlet on the sealed door are aligned and arranged at intervals; preferably, the water inlet channel extends in the vertical direction inside the decorative door, and the spout is located at the lowest position of the water inlet channel, Increase the water pressure at the spout. Further, a booster device is installed on the water inlet channel to increase the pressure of the passing water flow, so that the nozzle sprays the water flow across the gap into the water inlet.

Further, the sealing door is provided with a circular area with a diameter d and centered on the center of the sealing door, the water inlet is arranged in the circular area, the diameter of the inner cylinder is D, the diameter d of the water inlet area and the inner cylinder The ratio of the diameter D is less than or equal to 0.5. Further, a positioning mechanism is provided between the inner cylinder and the outer cylinder. During the water intake process, the inner cylinder stops at a set position under the action of the positioning mechanism, so that the water inlet on the sealed door coincides with the spout of the water inlet channel . Further, the spout is arranged at the center of the decorative door, and the water inlet is arranged at the center of the sealed door. Further, the shape of the spout is tapered, and the diameter of the end of the spout facing the water inlet is smaller than the diameter of the water inlet channel, so as to increase the water flow pressure sprayed from the spout and reduce the diameter of the water column sprayed out. Further, the diameter of the water inlet on the side facing the inner cylinder is larger than the diameter on the side facing the spout. Further, the diameter of the side of the spout facing the water inlet is smaller than the diameter of the side of the water inlet facing the spout. Further, the inner cylinder is a non-porous inner cylinder without dewatering holes on the cylinder wall. After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

1. The inner tube of the drum washing machine in the present invention is a non-porous inner tube. When washing, the inner tube contains washing water for washing, which solves the problem of dirt accumulation between the outer wall of the inner tube and the inner wall of the outer tube. At the same time, the present invention provides A non-porous inner cylinder water inlet method is implemented to deliver water to the inner cylinder without affecting the washing of the inner cylinder.

2. The water inlet channel of the present invention diverts the water flow introduced by the water inlet structure to the nozzle set on the decorative door and facing the water inlet of the inner cylinder, and the water jet from the nozzle passes over the sealing door and the decorative door. The gap is sprayed to the water inlet and delivered to the inner cylinder, so that the water can be fed into the inner cylinder, the sealing of the inner cylinder is ensured, and the space for installing the water inlet device is saved.

3. A pressurizing device is installed on the inlet flow channel, which can increase the water pressure flowing through the inlet flow channel and make the water in the inlet flow channel pass over The gap between the sealed door and the decorative door flows into the water inlet, and the pressurized water flow can also wash the clothes in the inner cylinder, improving the laundry washing ratio.

The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings. Description of the drawings

The accompanying drawings are used as a part of the present invention to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 is a schematic structural diagram of a drum washing machine in an embodiment of the present invention;

Figure 2 is a schematic structural view of a drum washing machine in another embodiment of the present invention;

Figure 3 is an enlarged view of A in Figure 1; Figure 4 is a schematic structural view of the bottom of the inner tub in an embodiment of the present invention; Figure 5 is a structural schematic view of a drum washing machine in another embodiment of the present invention; Figure 6 is another of the present invention The structure diagram of the drum washing machine in implementation; Figure 7 is a front view of the inner tub in the embodiment of the present invention. Description of main components in the figure: 1. Shell; 2. Outer cylinder; 3. Inner cylinder; 10. Decorative door; 31. Water inlet; 32. Lifting rib; 33. Centrifugal control valve; 4. Drive device; 51. Inlet Water valve; 52. Flow sensor; 53, detergent box; 6. Water inlet channel; 60, Spout; 61, booster device; 300, Water inlet; 310, Sealed door;. It should be noted that these drawings and text descriptions are not intended to limit the scope of the present invention in any way, but to explain the concept of the present invention for those skilled in the art by referring to specific embodiments.

detailed description

To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention. , But not used to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have The specific orientation, construction and operation in a specific orientation cannot be understood as a limitation of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, they may be fixed or detachable. Connected, or integrally connected; may be mechanically connected or electrically connected; may be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in specific situations. Example one

As shown in Figures 1 to 4, the drum washing machine described in the embodiment of the present invention includes a casing 1 and an inner tub 3 arranged inside the casing 1. The casing 1 is provided with a water inlet structure. In order to introduce water from the external water supply system into the washing machine housing 1, the water inlet structure includes a water inlet valve 51, a flow sensor 52 and a detergent box 53 containing washings connected in series; the drum washing machine includes the set The water inlet 31 on the wall of the cylinder 3 communicates the inside and the outside of the inner cylinder 3; a water inlet channel 6 is provided between the water inlet structure and the water inlet 31, and the water inlet channel 6 enters the water The water flow introduced by the structure is guided to a spray port 60 which is provided with a gap with the water inlet 31, and the water sprayed from the spray port 60 passes through the gap and is sprayed to the water inlet 31 and delivered to the inner cylinder 3. The drum washing machine in this embodiment may be provided with an outer tub 2 or not. In the embodiment of the present invention, the drum washing machine includes an outer tub 2. The inner tub 3 is sleeved inside the outer tub 2 and is rotatable relative to the outer tub 2, and the inner tub 3 and the outer tub 2 are coaxially arranged with the central axis horizontally arranged. A driving device 4 is installed between 3 and the outer cylinder 2 to drive the inner cylinder 3 to rotate around the outer cylinder 2, and the outer wall of the inner cylinder 3 and the inner wall of the outer cylinder 2 are separated by a certain distance. The inner tube 3 of this embodiment is a non-porous inner tube 3 with no dehydration holes on the tube wall. When washing, the inner tube 3 contains washing water, and the driving device 4 drives the inner tube 3 to rotate to wash the clothes. The inner cylinder is provided with a water inlet 31, and the water inlet channel 6 guides the water flow introduced by the water inlet structure to the nozzle 60 provided on the outer cylinder 2 and facing the water inlet 31 of the inner cylinder 3. The water jet from the nozzle 60 Pass the gap between the inner and outer cylinders 2 and spray to the water inlet 31 and deliver to the inner cylinder 3. In the embodiment of the present invention, the water inlet end of the water inlet channel 6 is communicated with the water inlet structure to introduce the water flow of the external system into the water inlet channel 6 through the water inlet structure, and the water outlet end of the water inlet channel 6 passes through the outer cylinder 2 walls, and on the side of the outer cylinder 2 facing the inner cylinder 3, a spout 60 is formed. The spout 60 and the water inlet 31 on the wall of the inner cylinder 3 are arranged correspondingly. There is a certain gap between 60 and the water inlet 31, and the spray port 60 sprays a water stream, and the sprayed water flows across the gap and is sprayed to the water inlet 31 and delivered to the inner cylinder 3. In order to increase the pressure of the water flowing through the water inlet channel 6 and make the water flow at the spout 60 flow out in a jet shape, a booster 61 is added to the water inlet channel 6, as shown in Figure 2, which can reduce the flow of water through the gap. Waste of water resources. In the design, the gap between the bottoms of the inner and outer cylinders 2 is reduced as much as possible, so that the pressurized water flow can cross the gap. The bottom of the inner cylinder 3 is provided with a ventilation hole with a smaller diameter, which facilitates the jet of water into the inner cylinder 3. The ventilation hole is higher than the water inlet 31 when the inner cylinder 3 is in a static state. The diameter is small. During the rotating washing process of the inner tub 3, only a small part of the washing water in the inner tub 3 flows out. The outer tub 2 is provided with a drain, and the water flowing between the outer tub 2 and the inner tub 3 is drained口出。 Mouth discharge.

In the embodiment of the present invention, a positioning mechanism (not shown in the figure) is provided between the inner cylinder 3 and the outer cylinder 2, and the inner cylinder 3 stops at a set position under the action of the positioning mechanism, so that the nozzle of the water inlet channel 6 60 coincides with the water inlet 31 on the wall of the inner cylinder 3, and the inner cylinder 3 will not rotate relative to the outer cylinder 2 during the water intake process. Example two

In the embodiment of the present invention, the spout 60 and the water inlet 31 are arranged opposite to each other. The water inlet 31 and the spout 60 are two opposite conical mouths. The diameter of the end of the spout 60 facing the water inlet 31 is smaller than that of the water inlet flow channel 6. The diameter not only increases the pressure of the water jet sprayed from the nozzle 60, but also reduces the diameter of the jetted water column; the diameter of the water inlet 31 on the side facing the inner cylinder 3 is larger than the diameter on the side facing the nozzle 60, the water inlet 31 The water flow at the position flows into the inner tube 3 along the tapered surface. When the inner tube 3 is rotated and washed, the water in the inner tube 3 is reduced from flowing out of the water inlet 31; the diameter of the nozzle 60 toward the water inlet 31 is smaller than the water inlet 31 The diameter toward the side of the spout 60 makes the water jet sprayed from the spout 60 completely enter the water inlet 31. Example three

As shown in FIGS. 1 to 4, the water inlet 31 described in the embodiment of the present invention is provided at the bottom of the inner cylinder 3, and at least part of the water inlet channel 6 passes through the outer cylinder in a direction parallel to the central axis of the inner and outer cylinders 2 2 Bottom wall, the spout 60 of the water inlet channel 6 faces the direction of the water inlet 31. In the embodiment of the present invention, as shown in FIG. 4, the distance from the water inlet 31 to the bottom center of the inner cylinder 3 is d, and d can be determined according to the diameter of the inner cylinder 3, and the diameter of the inner cylinder 3 is D, where 0 . 033 d/D<0. 9; Preferably, 0.07^d/D <0.4; More preferably, 0.1 <d/D<0.22. This can ensure that the water in the inner tub 3 will not leak from the water inlet 31 during the washing process. Example four

As shown in FIG. 1, the water inlet structure described in the embodiment of the present invention includes a water inlet valve 51, a flow sensor 52, and a detergent box 53, which are connected in series in sequence, and the water inlet structure communicates with the water inlet channel 6 and The water structure introduces the water flow of the external water supply system into the water inlet flow channel 6, and the water flow is sprayed into the inner cylinder 3 from the nozzle 60 at the end of the water inlet flow channel 6. In this embodiment, the water inlet structure is provided with a flow sensor 52 to detect the amount of water entering the inner tub 3 of the drum washing machine. When the amount of water flowing into the inner tub 3 reaches a set value, the water inlet valve 51 is closed to stop the water inlet. The washing machine starts washing, and the flow sensor 52 is arranged downstream of the water inlet valve 51; preferably, the flow sensor 52 may be a rotor flow sensor 52, a turbine flow sensor 52, an ultrasonic flow sensor 52, an electromagnetic flow sensor 52, orifice plate flow Sensor 52 and so on. In this embodiment, the detergent box 53 can contain detergent, washing powder, and softener, etc. The water flow enters the detergent box 53 to dissolve the detergent, or the washing powder, or the softener, and then is delivered to the water inlet channel 6 Inside. In this embodiment, a heating device (not shown in the figure) is also provided on the water inlet structure, which can fully dissolve detergent and the like, and the heating device can be set at any position. For example, the heating device may be arranged downstream of the detergent box 53, and the water inlet valve 51, the flow sensor 52, the detergent box 53, and the heating device are sequentially connected in series from the water inlet end of the water inlet structure to the water outlet end of the water inlet structure; or, The heating device is arranged between the flow sensor 52 and the detergent box 53, and the water inlet valve 51, the flow sensor 52, the heating device and the detergent box 53 are sequentially connected in series from the water inlet end of the water inlet structure to the water outlet end of the water inlet structure. Example five

As shown in Figures 1 and 2, a plurality of lifting ribs 32 are evenly spaced on the inner wall of the inner cylinder 3 in the embodiment of the present invention. The outer shell of the lifting ribs 32 is provided with a plurality of permeable holes, and the inner wall of the inner cylinder 3 The upper part is provided with an opening at a position relative to the lifting rib 32. The opening is provided with a centrifugal control valve 33, and the lowest position of the outer cylinder 2 is provided with a drainage port. The centrifugal control valve 33 opens when the inner cylinder 3 rotates at a high speed to discharge water.

In this embodiment, the centrifugal control valve 33 has two positions, and the centrifugal control valve 33 can be switched between the first position and the second position according to the rotation speed of the inner cylinder 3. When the inner cylinder 3 is at a low speed, the centrifugal control valve 33 is in the first position to close the opening, and when the inner cylinder 3 is rotating at a high speed, the centrifugal control valve 33 is in the second position to open the opening, so as to discharge the water in the inner cylinder 3. In this embodiment, the centrifugal control largely includes a valve plug, a lever, and a weight. The valve plug corresponds to a closed opening. The weight and the valve plug are respectively arranged on both sides of the lever. When the inner cylinder 3 is stationary or rotating at a low speed The valve plug closes the opening. When the inner cylinder 3 rotates at a high speed, the weight is subjected to centrifugal force to move outward in the radial direction of the inner cylinder 3, driving the valve plug to move away from the opening to open the opening.

Example Six

As shown in Figures 5 to 7, the drum washing machine in the embodiment of the present invention includes a casing 1 and an inner tub 3 arranged inside the casing 1. The casing 1 is provided with an external water supply The water flow in the system is introduced into the water inlet structure inside the washing machine, the inner cylinder 3 is provided with a discharge port for the user to put clothes into, and the inner cylinder 3 is fixedly installed with a sealed door 310 that closes and opens the discharge port. The sealed door 310 is provided with a water inlet 300 for injecting water into the inner cylinder 3, a water inlet channel 6 is arranged between the water inlet 300 and the water inlet structure, the water outlet end of the water inlet channel 6 extends to the water inlet structure, and the water outlet of the water inlet structure A spout is formed at the end, and the spout and the water inlet 300 are arranged opposite to each other with a certain gap. The water inlet channel 6 guides the water flow introduced by the water inlet structure to the spout that has a gap with the water inlet 300, and the water jet from the spout crosses the gap It is shot to the water inlet 300 and delivered to the inner cylinder 3. The inner tube 3 is a non-porous inner tube 3 without a dehydration hole on the tube wall, and the drum washing machine can be provided There is an outer cylinder 2, and a driving device 4 for driving the inner cylinder 3 to rotate is provided between the outer cylinder 2 and the inner 3, or the outer cylinder 2 may not be provided. 3 the volume of water.

In the embodiment of the present invention, the front of the housing 1 is provided with a decorative door 10 opposite to the sealed door 310, and at least part of the water inlet channel 6 extends inside the decorative door 10 and is formed on the side of the decorative door 10 facing the inner cylinder 3. The spout, the water inlet channel 6 guides the water flow introduced by the water inlet structure to the spout provided on the decorative door 10 and facing the water inlet 300 of the inner cylinder 3, and the water jet from the spout passes over the sealed door 310 and the decorative door The gap between 10 is sprayed to the water inlet 300 and delivered to the inner cylinder 3. The rear wall of the inner cylinder 3 perpendicular to the axis, or the sealing door 310 is provided with a vent with a smaller diameter, which facilitates the jet of water into the inner cylinder 3. The diameter of the vent is small. During the washing process of the inner cylinder 33, The washing water in the inner tub 3 hardly flows out from the ventilation holes.

The decorative door 10 has a plate-like structure. The water inlet channel 6 extends along the inner plane of the decorative door 10. The nozzle passes through the decorative door 10 and opens toward the inner cylinder 3 side. The direction of the nozzle is perpendicular to the water inlet channel 6 in the decorative door 10 Internal extension direction; Preferably, the water inlet channel 6 extends in the vertical direction in the decorative door 10, and the nozzle is located at the lowest position of the water inlet channel 6 to increase the water pressure at the nozzle. The water inlet channel 6 is also equipped with a pressure boosting device 61 that increases the pressure of the water flowing through, so that the water jet is sprayed into the water inlet 300 across the gap, and the water jetted from the nozzle enters the inner cylinder 3 through the water inlet 300 It can also wash the clothes inside the inner cylinder 3 and improve the washing ratio.

In the embodiment of the present invention, the sealing door 310 is provided with a circular area with a diameter d and the center of the sealing door 310, the water inlet 300 is arranged in the circular area, and the diameter of the inner cylinder 3 is D. The ratio of the diameter d of the water area to the diameter D of the inner cylinder 3 is less than or equal to 0.5. A positioning mechanism (not shown in the figure) is provided between the inner cylinder 3 and the housing 1. During the water intake process, the inner cylinder 3 stops at a set position under the action of the positioning mechanism, so that the inlet on the sealed door 310 The nozzle 300 coincides with the nozzle of the water inlet flow channel 6.

In the embodiment of the present invention, the spout is set at the center of the decorative door 10, and the water inlet 300 is set at the center of the sealed door 310. This design method can eliminate the need to design a positioning mechanism, and provide a larger washing space for the inner cylinder 3, and the water intake During the process, the inner tube 3 can stop rotating or rotate at a certain speed, and the inner tube 3 rotates into water to fully soak the clothes and reduce the washing time of the clothes.

Example Seven

In the embodiment of the present invention, the spout and the water inlet 300 are arranged opposite to each other. The water inlet 300 and the spout are two opposite conical mouths. The diameter of the end of the spout facing the water inlet 300 is smaller than the diameter of the water inlet channel 6. The pressure of the water jet sprayed by the nozzle is increased, and the diameter of the jetted water column is also reduced; the diameter of the water inlet 300 facing the inner cylinder 3 is larger than the diameter of the side facing the nozzle, and the water flow at the water inlet 30031 follows The tapered surface flows into the inner tube 3, and the inner tube 3 rotates to wash When washing, reduce the water in the inner cylinder 3 to flow out of the water inlet 300; the diameter of the nozzle toward the water inlet 300 is smaller than the diameter of the water inlet 300 toward the nozzle, so that the water jet from the nozzle completely enters the water inlet 300, reducing The water sprayed from the spout may flow into the outer cylinder 2 or the housing 1 in the gap, causing waste of water resources. Example eight

The difference between this embodiment and the foregoing embodiment is that a connecting pipe is provided between the spout and the water inlet 300, the axis of the connecting pipe is coaxially arranged with the water inlet 300 and the spout, and one end of the connecting pipe is fixed to the spout or the water inlet. The other end of the outer circumference of 300 is connected with the water inlet 300 or the spout in a relatively rotatable sealing connection. When water is fed, the water in the water inlet channel 6 enters the inner cylinder 3 through the connecting pipe. In this embodiment, the connecting pipe is fixed on the outer circumference of the water inlet 300, and the other end of the connecting pipe is sealed and connected with the outer circumference of the spout in a relatively rotatable manner, so that the water flowing from the spout enters the inner cylinder through the connecting pipe and the water inlet 300 3. Alternatively, the connecting pipe is fixed on the outer circumference of the spout, and the other end of the connecting pipe is connected to the outer circumference of the water inlet 300 in a relatively rotatable sealing connection, so that the water flowing out of the spout enters the inner cylinder through the connecting pipe and the water inlet 300 3 in. Example 9

As shown in FIG. 5, the water inlet structure described in the embodiment of the present invention includes a water inlet valve 51, a flow sensor 52, and a detergent box 53, which are connected in series in sequence, and the water inlet structure is connected to the water inlet channel 6, and The water structure introduces the water flow of the external water supply system into the water inlet flow passage 6, and the water flow is sprayed into the inner cylinder 3 from the nozzle at the end of the water inlet flow passage 6. In this embodiment, the water inlet structure is provided with a flow sensor 52 to detect the amount of water entering the inner tub 3 of the drum washing machine. When the amount of water flowing into the inner tub 3 reaches a set value, the water inlet valve 51 is closed to stop the water inlet. The washing machine starts washing, and the flow sensor 52 is arranged downstream of the water inlet valve 51; preferably, the flow sensor 52 may be a rotor flow sensor 52, a turbine flow sensor 52, an ultrasonic flow sensor 52, an electromagnetic flow sensor 52, orifice plate flow Sensor 52 and so on. In this embodiment, the detergent box 53 can contain detergent, washing powder, and softener, etc. The water flow enters the detergent box 53 to dissolve the detergent, or the washing powder, or the softener, and then is delivered to the water inlet channel 6 Inside. In this embodiment, a heating device (not shown in the figure) is also provided on the water inlet structure, which can fully dissolve detergent and the like, and the heating device can be set at any position. For example, the heating device may be arranged downstream of the detergent box 53, and the water inlet valve 51, the flow sensor 52, the detergent box 53, and the heating device are sequentially connected in series from the water inlet end of the water inlet structure to the water outlet end of the water inlet structure; or, The heating device is arranged between the flow sensor 52 and the detergent box 53, and the water inlet valve 51, the flow sensor 52, the heating device and the detergent box 53 are sequentially connected in series from the water inlet end of the water inlet structure to the water outlet end of the water inlet structure. Example ten As shown in Figures 5 and 6, a plurality of lifting ribs 32 are evenly spaced on the inner wall of the inner cylinder 3 in the embodiment of the present invention, and the outer shell of the lifting ribs 32 is provided with a plurality of permeable holes, and the inner wall of the inner cylinder 3 An opening is provided on the upper part relative to the lifting rib 32, the opening is provided with a centrifugal control valve 33, the outer cylinder 2 or the housing 1 is provided with a drainage port, and the centrifugal control valve 33 opens when the inner cylinder 3 rotates at a high speed to discharge water.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed in the preferred embodiments as above, it is not intended to limit the present invention. Anyone familiar with this patent Without departing from the scope of the technical solution of the present invention, the skilled person can use the technical content suggested above to make slight changes or modification into equivalent embodiments with equivalent changes, but any content that does not deviate from the technical solution of the present invention, according to the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments by technical essence still fall within the scope of the present invention.

Claims

1. A drum washing machine, including a casing;

The inner cylinder is arranged inside the housing; the water inlet structure is arranged on the housing, and introduces the water flow provided by the external water supply system into the washing machine housing;

It is characterized in that: the water inlet is arranged on the inner cylinder and communicates with the inside and outside of the inner cylinder;

The water inlet channel diverts the water flow introduced by the water inlet structure to a nozzle provided with a gap with the water inlet, and the water jet from the nozzle crosses the gap and is sprayed to the water inlet and delivered to the inner cylinder.

2. A drum washing machine according to claim 1, characterized in that: the water inlet end of the water inlet channel is communicated with the water inlet structure, and the water outlet end of the water inlet channel passes through the outer tube wall and faces inward on the outer tube wall. A spout is formed on one side of the barrel, and the spout is aligned with the water inlet at intervals.

3. The drum washing machine according to claim 1, characterized in that: a pressure boosting device is installed on the water inlet channel to increase the pressure of the flowing water, so that the spray port sprays the water outward.

4. A drum washing machine according to claims 1 to 3, characterized in that: the drum washing machine comprises an outer tub, the inner tub is sleeved inside the outer tub and rotates relative to the outer tub, and the center of the inner tub and the outer tub The axis extends horizontally, the water inlet is arranged at the bottom of the inner cylinder, at least part of the water inlet channel passes through the bottom wall of the outer cylinder in a direction parallel to the central axis of the inner and outer cylinders, and the spout of the water inlet channel faces the water inlet direction.

5. A drum washing machine according to claim 4, characterized in that: the distance from the center of the water inlet to the center of the bottom of the inner tube is d, and the diameter of the inner tube is D, where 0.033<d/D <0. 9; Preferably, 0. 07^d/D<0. 4;

More preferably, 0.1 d/D<0.22.

6. A drum washing machine according to any one of claims 1 to 5, characterized in that: a positioning mechanism is provided between the inner tub and the outer tub, and during the water intake process, the inner tub stops under the action of the positioning mechanism Set the position so that the spout of the water inlet flow channel coincides with the water inlet on the inner cylinder wall.

7. A drum washing machine according to any one of claims 1 to 6, characterized in that: the inner tub is a non-porous inner tub without dewatering holes on its wall.

8. A drum washing machine according to any one of claims 1 to 4, characterized in that: the shape of the nozzle is cone The diameter of the end of the nozzle facing the water inlet is smaller than the diameter of the water inlet channel, so as to increase the pressure of the water flow from the nozzle and reduce the diameter of the water column.

9. A drum washing machine according to any one of claims 1 to 8, characterized in that: the water inlet is a tapered hole, and the diameter of the water inlet toward the inside of the inner tub is larger than the diameter of the side toward the spout .

10. A drum washing machine according to any one of claims 1 to 9, characterized in that: the diameter of the side of the spout facing the water inlet is smaller than the diameter of the side of the water inlet facing the spout.

11. A drum washing machine, including:

Shell, the front panel of the shell is provided with a decorative door; the inner tube is installed inside the shell, and the inner tube is installed with a sealed door that opens and closes the opening for users to put clothes in; the water inlet structure is arranged in the shell Physically, the water flow provided by the external water supply system is introduced into the washing machine housing;

It is characterized in that: the water inlet is arranged on the sealed door and communicates with the inside and outside of the inner cylinder; the water inlet channel guides the water flow introduced by the water inlet structure to the spout arranged on the decorative door and facing the water inlet of the inner cylinder, The water jet ejected from the nozzle passes the gap between the sealed door and the decorative door and is sprayed to the water inlet and delivered to the inner cylinder.

12. A drum washing machine according to claim 11, characterized in that: the water inlet end of the water inlet channel extends to the water inlet structure, and at least part of the water inlet channel extends along the inside of the decorative door and faces the decorative door A spout is formed on one side of the inner cylinder, the direction of the spout is perpendicular to the extension direction of the water inlet channel inside the decorative door, and the spout and the water inlet on the sealed door are spaced and aligned;

Preferably, the water inlet channel extends in the vertical direction in the decorative door, and the nozzle is located at the lowest position of the water inlet channel to increase the water pressure at the nozzle.

13. The drum washing machine according to claim 11, characterized in that: a booster device is installed on the water inlet channel to increase the pressure of the flowing water flow, so that the spray nozzle sprays the water flow across the gap into the water inlet.

14. A drum washing machine according to claim 11 or 13, characterized in that: the sealed door is provided with a circular area with a diameter d and centered on the center of the sealed door, and the water inlet is arranged in the circular area 5。 Inside, the diameter of the inner cylinder is D, and the ratio of the diameter d of the water inlet area to the diameter D of the inner cylinder is less than or equal to 0.5.

15. A drum washing machine according to claim 14, characterized in that: a positioning mechanism is provided between the inner tub and the housing, and the inner tub stops at a set position under the action of the positioning mechanism during the water intake process , Make the water inlet on the sealed door and The nozzles of the water flow channel coincide.

16. The drum washing machine according to claim 14, characterized in that the spout is arranged at the center of the decorative door, and the water inlet is arranged at the center of the sealed door.

17. A drum washing machine according to any one of claims 11 to 16, characterized in that: the shape of the spout is tapered, and the diameter of the end of the spout facing the water inlet is smaller than the diameter of the water inlet flow channel to enlarge the spout The pressure of the sprayed water stream reduces the diameter of the sprayed water column.

18. A drum washing machine according to any one of claims 11 to 17, characterized in that: the diameter of the water inlet on the side facing the inner cylinder is larger than the diameter on the side facing the spout.

19. A drum washing machine according to any one of claims 11 to 18, characterized in that the diameter of the side of the spout facing the water inlet is smaller than the diameter of the side of the water inlet facing the spout.

20. The drum washing machine according to any one of claims 11 to 19, characterized in that: the inner tub is a non-porous inner tub without dewatering holes on its wall.