JP2019536512A - Drum washing machine and control method - Google Patents

Abstract

A drum washing machine includes a housing (1), an outer tub (2), and an inner tub (3), wherein the inner tub (3) has a perforated area (4) having a hole and a closed non-porous area. (5), a sealing unit (6) is provided between the inner tank (3) and the outer tank (2) on at least one side of the perforated area (4), and the sealing unit (6) is provided. ), A sealed area (8) is formed between the non-porous area (5) of the inner tank (3) and the outer tank (2). In the washing machine, water supply and drainage can be effectively realized by the perforated area (4) of the inner tub (3). In addition, the cooperation of the non-porous area (5) of the inner tank (3) and the sealing unit (6) makes it possible to form a sealed area (8) between the inner tank and the outer tank, so that the inflow of the cleaning wastewater is performed. Is effectively prevented, so that the accumulation of dirt between the inner tank and the outer tank is avoided. Such a stain-prevention type cleaning system eliminates the need for cleaning in a drum washing machine. [Selection diagram] Fig. 1

Description

  The present invention belongs to the field of home appliances, and more specifically, to a drum washing machine and a control method.

  The space between the inner tub and the outer tub in the conventional drum washing machine is a sealed area for the user and cannot be directly cleaned. After a certain period of use, a certain amount of dirt adheres and accumulates in this area, and if it is not cleaned over a long period of time, secondary contamination of clothes occurs during the washing process. As a result, not only a bad smell is generated in the washing machine, but also health is affected by secondary contamination of the clothes after washing.

Currently, there are mainly the following treatment methods for cleaning the inner tub and outer tub of a washing machine.
1. Rinsing the inner tank with a stream of water reduces dirt attached to the inner tank.
2. Periodically wash the washing machine with a bath cleaner to remove dirt.
3. In the case of a pulsator washing machine, contamination is avoided by using an inner tub without holes, but accumulation of dust between the inner tub and the outer tub is inevitable.

  However, these cleaning methods have the following disadvantages. First, it cannot be washed cleanly and thoroughly with water currents. Next, chemical cleaning takes a long time, is troublesome, and increases costs. In addition, dirt remains between the non-perforated tanks of the pulsator because of the drainage path.

  Patent Document 1 discloses a drum washing machine related to the present invention. The drum washing machine includes a housing, and an inner tub and an outer tub are provided in the housing. A door seal is provided between the outer tank and the housing, and the inner tank is connected to a driving device. The inner tank is a holeless inner tank. Further, the inner tank has a conical tank having a small diameter at the bottom of the tank and a large diameter at the mouth of the tank. The opening of the inner tank is contracted in an arc toward the inside. The door seal is provided with a water supply conduit. One end of the water supply conduit is connected to the washing water rapid heating device, and the other end of the water supply conduit extends through the door seal and into the inner tank. The outer tank is provided with a drain port and a water pressure detecting device. Although this technique employs a perforated inner tank, the problem to be solved is to save water for washing. In addition, since the drainage hole is provided in the outer tank, dirt still remains between the inner tank and the outer tank at the bottom, and the existing problem cannot be solved.

  In view of these, the present invention is proposed.

Chinese Patent Application No. 20142141546.3

  SUMMARY OF THE INVENTION An object of the present invention is to provide a drum washing machine which eliminates defects in the prior art and does not require cleaning, and is a technical problem to be solved. In the washing machine of the present invention, water supply and drainage can be effectively realized by the perforated region of the inner tub, and the washing machine is easily washed off, so that the residue is avoided. In addition, since the non-porous area of the inner tank and the sealing unit cooperate with each other, it is possible to form a sealed area between the inner tank and the outer tank. The accumulation of dirt between the outer tanks is avoided. Such a dirt-prevention type cleaning system eliminates the need for cleaning in a drum washing machine.

  In order to solve the above technical problems, a basic idea of a technical solution adopted in the present invention will be described below.

  A first object of the present invention includes a housing, an outer tub and an inner tub, wherein the inner tub includes a perforated area in which a hole is opened and a closed non-porous area, and at least one of the perforated areas. A sealing unit is provided between the inner tub and the outer tub on the side, and by providing a drum washing machine in which a sealed area is formed between the sealing unit and the non-porous area of the inner tub and the outer tub. is there.

  Further, the sealing unit is fixed to the inner wall of the outer tub and dynamically seals the outer wall of the inner tub.

  Further, a water supply / drainage space is formed between the sealed unit and the perforated area of the inner tank and the outer tank, and the water supply / drainage space communicates with the inside of the inner tank.

  Further, a water supply line and a drainage line are provided between the housing and the outer tank, and the water supply line and the drainage line communicate with the water supply / drainage space, respectively.

  Further, the water outlet of the water supply pipe is provided on the outer tank wall of the water supply / drain space, and corresponds to the perforated area at the upper part of the inner tank, and the water supply port of the water supply pipe is provided on the outer tank wall of the water supply / drain space. And a drainage pump corresponding to the perforated area below the inner tank.

  Further, the perforated area of the inner tank is provided at one end near the inlet, and a sealing unit is provided on a side of the perforated area away from the inlet, and a non-porous area between the sealed unit and the inner tank is provided. A sealed region is formed between the outer tub and the outer tub.

  Further, a water supply / drainage space is formed between the sealing unit and the window gasket of the viewing window in the washing machine, the perforated area of the inner tub, and the outer tub. Is in communication with

  Further, a flow guiding structure for guiding water from the non-porous area to the perforated area is provided on the inner surface of the non-porous area of the inner tank.

  A second object of the present invention is a control method for the double-drum washing machine, which includes at least a washing program, a rinsing program and a dehydration program, wherein the washing machine executes the washing program or the rinsing program to supply water. If water enters from the perforated area of the inner tub to the non-perforated area and the washing machine executes a drainage or dewatering program, water enters from the non-perforated area to the perforated area.

  Further, after the washing program or the rinsing program is completed, the washing machine supplies water to wash the water supply / drainage space, and thoroughly flushes dirty water.

  By using the above technical solution, the present invention has the following advantageous effects as compared with the prior art.

  (1) The inner tub of the washing machine according to the present invention includes a perforated area and a non-perforated area. That is, the water supply / drainage hole is provided only in a part of the inner tank. In addition, the cooperation between the non-porous area of the inner tank and the sealing unit enables the inner tank and the outer tank to be effectively isolated from each other, thereby preventing the inflow of cleaning wastewater. Thereby, accumulation of dirt between the inner tank and the outer tank is avoided, and a dirt-prevention type cleaning system is realized.

  (2) Water supply and drainage can be effectively realized by the perforated area of the inner tank in the present invention. In addition, after draining in a program such as washing or rinsing, the water supply / drain space for water supply / drainage can be easily washed away, so that dirt residue is further avoided.

  (3) The perforated area of the inner tank in the present invention is preferably provided near the inlet at the tip of the body. In this case, it is possible to combine with the conventional water supply / drainage system of the washing machine, and the inner tub and the outer tub can be separated by only one sealing unit. In addition, since it is only necessary to change or add a conventional washing machine, the change cost is suppressed, and it is easy to realize.

  Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the drawings.

  The drawings are provided as a part of the present invention for a better understanding of the present invention. The schematic examples of the invention and the description thereof are used for the interpretation of the invention, but do not unduly limit the invention. It goes without saying that the drawings described below are only some of the examples, and those skilled in the art can obtain still other drawings from these drawings without requiring creative labor.

FIG. 1 is a diagram showing the structure of the drum washing machine of the present invention.

  The drawings and text description are not intended to limit the scope of the inventive concept in any way, but rather to explain the inventive concept to those skilled in the art with reference to specific embodiments.

  Hereinafter, in order to clarify the purpose, technical solution and advantages of the embodiment of the present invention, the technical solution of the embodiment will be described clearly and concisely with reference to the drawings according to the embodiment of the present invention. The following examples are for illustrating the present invention, but do not limit the scope of the present invention.

  In the description of the present invention, directions or positions indicated by terms such as "up", "down", "front", "rear", "left", "right", "vertical", "in", "out" The relationship is a direction or a positional relationship based on the drawings and is only for convenience of description of the present invention and for simplification of the description, and a target device or member has a specific direction and a specific direction. Does not imply or imply that it is configured and operated. Therefore, it should not be understood as limiting the invention.

  In the description of the present invention, the terms "attach", "connect", and "connect" should be interpreted in a broad sense, unless explicitly defined and limited otherwise. For example, the connection may be a fixed connection, a detachable connection, or an integrated connection. Further, the connection may be a mechanical connection or an electrical connection. Furthermore, it may be a direct connection or an indirect connection via an intermediate medium. Those skilled in the art can interpret the specific meanings of the above terms in the present invention according to specific situations.

  As shown in FIG. 1, the present embodiment provides a drum washing machine that does not require cleaning. The drum washing machine includes a housing 1, an outer tub 2, and an inner tub 3. The inner tank 3 includes a perforated area 4 in which holes are opened and a closed non-perforated area 5. On at least one side of the perforated area 4, a sealing unit 6 is provided between the inner tank and the outer tank. A sealed area 8 is formed between the sealed unit 6 and the non-porous area of the inner tank and the outer tank.

  In the conventional washing machine, although water can accumulate in the region between the inner tub and the outer tub, dirt is likely to accumulate, but cannot be directly cleaned. Further, thorough cleaning is impossible with the conventional method, and it takes time and effort. On the other hand, in the inner tub of the drum washing machine of the present invention, an opening is provided as a perforated area only on a part of the tub wall, and the other part is a closed non-porous area. Openings in the perforated area of the inner tank are used for water supply and drainage. In order to realize effective water supply and drainage of the washing machine, one or more openings may be provided. In addition, by using the non-porous area of the inner tank to form a sealed area between the inner tank and the outer tank, the ingress of sewage is prevented, and the accumulation of dirt is eradicated.

  It is necessary to prevent the inflow of sewage by shutting off the area between the perforated area and the outer tank and the area between the non-perforated area and the outer tank by providing a sealing unit in the inner tank of this embodiment. There is. The sealing unit is provided on one or both ends of the perforated area of the inner tank so that a sealed area is formed between the sealing unit and the non-porous area of the inner tank and the outer tank. By setting the position and the number of the sealing units, the size of the sealing area can be adjusted. The perforated area of the inner tank may be provided at one end of the inner tank such as one end near the inlet, or may be provided at the center of the inner tank. The position of the sealing unit is provided according to the position of the perforated area. When the perforated area is provided at the front end of the inner tank, that is, at one end near the inlet, by providing a sealing unit at the rear end of the perforated area, the voids at the center and rear of the inner tank are provided. An anhydrous sealed area is formed between the pore area and the outer bath.

  Further, the sealing unit 6 is fixed to the inner wall of the outer tub 2 and dynamically seals the outer wall of the inner tub 3.

  The sealing unit of this embodiment may be fixed to the inner wall of the outer tub in any fixable manner. Further, the sealing unit dynamically seals the outer wall of the inner tank in accordance with the distance between the inner tank and the outer tank, so that the sealing can be realized even if the inner tank rotates. And it is easy to attach and replace.

  The sealing unit of this embodiment includes a packing and a fixing member. The packing is connected to the inner wall of the outer tub via a fixing member. Note that a bolt or the like can be used as the fixing member. The packing includes a retaining ring, a connection, a dynamic seal ring and a preload ring. The stationary ring and the dynamic seal ring are connected via a connection. Also, the fixing ring, the connection and the dynamic seal ring are integrally formed. The fixed ring is provided on the outer ring of the dynamic seal ring and is connected to the inner wall of the outer tub. The inner wall of the dynamic seal ring provides a dynamic seal to the outer wall of the inner tub. A preload ring is provided on the outer wall of the dynamic seal ring, and the preload ring is used for preloading the sealing unit.

  As shown in FIG. 1, the present embodiment further restricts the first embodiment. A water supply / drainage space 9 for water supply / drainage is formed between the sealed unit 6 and the perforated area 4 of the inner tank and the outer tank 2. The water supply / drain space 9 communicates with the inside of the inner tank.

  The sealing unit is provided on one side or both ends of the perforated area to form a sealed area, and can form a water supply / drainage space for water supply and drainage between the perforated area of the inner tank and the outer tank. . The water supply / drainage space communicates with the inside of the inner tub through an opening in the perforated area, and is used to realize water supply / drainage of the washing machine. When the perforated area is provided at one end near the input port, the sealing unit may be provided on the side of the perforated area that is separated from the input port. In this case, the water supply / drainage space is formed by the window gasket of the viewing window, the perforated area of the inner tank, the outer tank, and the sealing unit. In addition, a sealed area is formed between the sealed unit, the non-porous area of the inner tank, and the outer tank.

  Further, a water supply line 10 and a drainage line 11 are provided between the housing 1 and the outer tub 2, and the water supply line 10 and the drainage line 11 communicate with the water supply / drainage space 9, respectively. .

  A water supply line and a drainage line of the washing machine are provided between the housing and the outer tub, and communicate with a water supply / drainage space formed between the inner tub and the outer tub to realize water supply and drainage of the washing machine. . The water supply pipe and the drainage pipe penetrate the outer tank wall of the water supply / drainage space, are suspended in the water supply / drainage space, and the opening may correspond to the perforated area of the inner tank, or the outer tank forming the water supply / drainage space The openings of the water supply pipe and the drain pipe may be provided directly on the wall, and the openings may correspond to the perforated area of the inner tank. At the time of washing or rinsing, the water supply / drainage space can be washed out by supplying water after drainage. Since the water supply / drainage space is small in volume and has a small contact area with the inner tank, it can be thoroughly washed away with water, and wastewater can be prevented from remaining.

  Further, the water outlet of the water supply pipe 10 is provided on the outer tank wall of the water supply / drain space 9 and corresponds to the perforated area 4 on the upper part of the inner tank. The water supply port of the drainage pipe 11 is provided on the outer tank wall of the water supply / drainage space 9 and corresponds to the perforated area 4 below the inner tank.

  The water supply line is provided at the upper end of the washing machine. The drainage outlet of the water supply pipeline is provided on the outer tank wall of the water supply and drainage space, and also corresponds to the perforated area above the inner tank. In this case, the water flow flows from the upper end, which is advantageous for immersing the clothing. In addition, it is advantageous in that water is supplied after drainage to flush the water supply / drainage space and to remove residual sewage. The drain pipe is provided below the washing machine. The water supply port of the drainage pipe is provided on the outer tank wall of the water supply / drainage space, and corresponds to the perforated area below the inner tank. Therefore, it is advantageous in consolidating and discharging the washing water.

  The drainage pipe may be provided with a drainage pump 14 to supply power for drainage, or a drainage valve may be provided to control discharge of water flow.

  As shown in FIG. 1, the perforated area 4 of the inner tank 3 in this embodiment is provided at one end near the inlet, and a sealing unit 6 is provided on the side of the perforated area away from the inlet. . A sealed area is formed between the sealed unit 6 and the non-porous area 5 of the inner tank and the outer tank 2.

  In addition, a perforated area of the inner tank is provided at one end near the inlet, and the other part is a non-porous area. More preferably, the perforated area of the inner tub is provided in the front flange portion of the body of the drum washing machine, and the opening is provided one or more times. In this case, by simply providing the sealing unit on the side of the perforated area away from the inlet, a sealed area is formed between the sealing unit, the non-porous area of the inner tank, and the outer tank. According to this, a cleaning unnecessary area for preventing ingress of sewage is formed between most of the inner tank and the outer tank.

  Further, a water supply / drainage space is formed between the sealing unit 6 and the window gasket 13 of the viewing window 12 of the washing machine, the perforated area 4 of the inner tub, and the outer tub 2, and the water supply line 10 and the drainage pipe of the washing machine are formed. Each of the roads 11 communicates with the water supply / drain space 9.

  The perforated area of the inner tank is provided at one end near the inlet. Preferably, the perforated area of the inner tub is provided on the front flange portion of the body of the drum washing machine, and water supply and drainage are performed by the window gasket of the viewing window, the perforated area of the inner tub and one sealing unit in a conventional washing machine. A water supply / drainage space for water supply and drainage can be formed, and a water supply / drainage line can be connected to the water supply / drainage space to be used for water supply and drainage. In this case, it is possible to combine with the conventional water supply and drainage system of the washing machine, and it is possible to realize the separation between the inner tub and the outer tub with only one sealing unit. In addition, since it is only necessary to change or add a conventional washing machine, the change cost is suppressed, and it is easy to realize.

  A flow guiding structure for guiding water from the non-porous region to the perforated region is provided on the inner surface of the non-porous region of the inner tank in this embodiment.

  A drainage structure such as a diversion channel is provided in the non-porous area of the inner tank, and water is guided from the non-porous area to the perforated area to drain water. Water accumulation is avoided.

  The present embodiment provides a method for controlling a drum washing machine that does not require the cleaning described above. The control method includes at least a cleaning program, a rinsing program, and a dehydration program. When the washing machine executes the washing program or the rinsing program to supply water, water enters from the perforated area 4 of the inner tub into the non-perforated area 5. When the washing machine executes the drainage or dewatering program to drain the water, the water enters from the non-porous area 5 to the perforated area 4.

  When the washing program or the rinsing program is started, the tap water enters the water supply / drainage space between the outer tank and the perforated area of the inner tank via the water supply pipe, flows into the inner tank from the perforated area, and flows into the non-porous area. To enter. Also, at the time of drainage or activation of the dehydration program, water in the inner tank enters the non-porous area into the perforated area. Alternatively, it is guided by the flow guiding structure, enters the non-porous area into the perforated area, enters the bottom water supply / drainage space via the perforated area, and is discharged from the drain pipe. In this way, the water supply and drainage of the washing machine can be effectively realized, and since there is no entry of wastewater into the sealed area between most of the inner tub and the outer tub, accumulation of dirt is avoided, and furthermore, Eliminates the need for cleaning.

  Further, after the washing program or the rinsing program is completed, the washing machine supplies water to wash the water supply / drainage space, and thoroughly flushes dirty water.

  After washing or rinsing is completed and drained, the washing machine is again supplied with water to wash the water supply / drain space between the inner tub and the outer tub, so that the remaining sewage can be more thoroughly washed away, and the residue is avoided. .

Cleaning process:
Water supply: At the time of washing, the viewing window 12 is closed, and tap water is caused to flow from the water supply line 10 between the outer tub and the perforated area of the inner tub to wash out the water supply / drain space 9. The water enters the inner tub 3 of the washing machine through the perforated area 4 of the inner tub until it reaches an appropriate water level. At this time, water does not enter the sealed area 8, and water exists inside the water supply / drainage space 9 and the inner tank 3.

  Washing and draining: When the water supply is completed, the motor causes the inner tank to perform washing with a program of a fixed rotation stop ratio. When the washing is completed, the drainage pump is activated to drain the water, and the washing water in the inner tank is made to enter from the water supply / drainage hole of the perforated area 4 to the lower part of the bottom of the water supply / drainage space and is discharged from the drainage pipe 11.

  Rinse: Water is supplied from the water supply line 10 of the washing machine, and the water supply / drain space is washed, so that the sewage is thoroughly washed away. Free water is discharged from the drain pipe 11.

  Dehydration: The inner tub 3 performs dehydration. The water is guided from the non-porous area 5 to the perforated area 4 of the inner tank by the flow guiding structure on the inner surface of the inner tank 3, and enters the drain pipe 11 from the lower part of the water supply / drainage space to be drained.

  Thereafter, the above process is repeated, and rinsing is performed until the washing is completed.

  The above are only preferred embodiments of the present invention, and do not limit the present invention to any form. Although the present invention has been disclosed above by the preferred embodiments, it is not intended to limit the present invention, but is performed by a person skilled in the art using the technical contents presented above without departing from the technical solution of the present invention. Minor variations or supplements are considered equivalently modified equivalent embodiments. Without departing from the contents of the technical solution of the present invention, simple modifications, equivalent modifications and supplements made to the above-described embodiments based on the technical essence of the present invention are all within the scope of the solution of the present invention. Is done.

DESCRIPTION OF SYMBOLS 1 Housing 2 Outer tank 3 Inner tank 4 Perforated area 5 Non-perforated area 6 Sealed unit 7 Water supply and drainage hole 8 Sealed area 9 Water supply and drainage space 10 Water supply line 11 Drainage line 12 Viewing window 13 Window gasket 14 Drainage pump

Claims (10)

In a drum washing machine including a housing, an outer tub and an inner tub,
The inner tank includes a perforated area in which a hole is opened and a sealed non-porous area, and a sealing unit is provided between the inner tank and the outer tank on at least one side of the perforated area, A drum washing machine, wherein a sealed area is formed between a sealed unit, a non-porous area of an inner tub, and an outer tub.   The drum washing machine according to claim 1, wherein the sealing unit is fixed to an inner wall of the outer tub and dynamically seals the outer wall of the inner tub.   3. A water supply / drainage space is formed between the sealed unit and the perforated area of the inner tank and the outer tank, and the water supply / drainage space communicates with the inside of the inner tank. A drum washing machine as described.   A water supply line and a drainage line are provided between the housing and the outer tub, and the water supply line and the drainage line communicate with the water supply and drainage space, respectively. A drum washing machine as described. The water outlet of the water supply pipe is provided on the outer tank wall of the water supply and drainage space, and corresponds to a perforated area on the upper part of the inner tank,
5. The drum washing machine according to claim 4, wherein a water supply port of the drainage pipe is provided on an outer tub wall of the water supply / drainage space and corresponds to a perforated area below the inner tub.   The perforated area of the inner tank is provided at one end near the inlet, and a sealing unit is provided on the side of the perforated area away from the inlet, and the non-perforated area and the outer area of the sealed unit and the inner tank are provided. The drum washing machine according to claim 1, wherein a sealed area is formed between the drum washing machine and the tub.   A water supply / drainage space is formed between the sealing unit and the window gasket of the viewing window in the washing machine, the perforated area of the inner tub, and the outer tub, and a water supply line and a drainage line of the washing machine communicate with the water supply / drainage space, respectively. The drum washing machine according to claim 6, wherein the washing is performed.   The drum according to any one of claims 1 to 7, wherein a flow guiding structure for guiding water from the non-porous area to the perforated area is provided on an inner surface of the non-porous area of the inner tank. Washing machine. The control method of the drum washing machine according to any one of claims 1 to 8, which includes at least a washing program, a rinsing program, and a dehydration program.
When the washing machine executes the washing program or the rinsing program to supply water, water enters from the perforated area of the inner tub to the non-perforated area,
When the washing machine executes a drainage or dehydration program, water enters from a non-porous area to a perforated area.   The control method according to claim 9, wherein after the washing program or the rinsing program is completed, the washing machine supplies water to wash the water supply / drainage space, and thoroughly flushes dirty water.