JP2007054416A - Drum type washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum type washing machine with high energy saving performance without the need of the circulation pump of high output and a drum type washing machine in which the disposing route of a circulation hose or the like can be shortened as much as possible. <P>SOLUTION: Liquid (washing water) inside a water tub 2 is circulated inside a water discharge duct 7 and the circulation hose 10 and supplied into the water tub 2 again through a water supply port 2c provided on the water tub 2. The water supply port 2c which is an entrance for leading the washing water into the water tub 2 in such a manner is provided below the center P3 of a drum opening 3a which is the opening of a rotary drum 3 rotatably provided inside the water tub 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a laundry used for washing (hereinafter referred to as washing water) and a water tank that holds the laundry inside, a rotating drum that is rotatably provided inside the water tank, and a water tank. A circulation inlet which is an inlet for leading the wash water in the water tank to a predetermined circulation path, a water supply port connected to the circulation inlet via the circulation path, and the circulation path via the water supply opening And a circulation pump for supplying the liquid into the water tank.

  In recent years, as described in Patent Document 1 and Patent Document 2, a washing machine having a function of circulating washing water in a water tank through a predetermined circulation path is known. Such circulation of the washing water promotes dissolution of the detergent in the washing water, penetration of the washing water into the laundry, and the like. Thereby, the improvement of the washing effect of the laundry in a washing process is implement | achieved, and the effect of reduction of the required amount of detergent and water and the shortening of the time of a washing process is brought about.

  FIG. 5 shows a schematic cross-sectional view of a conventional drum-type washing and drying machine B having a washing water circulation function described in Patent Document 1 and Patent Document 2. As shown in FIG. 5, a conventional drum-type washing and drying machine B includes an outer box 101, a water tank 102 disposed in the outer box 101 and having a water tank opening 102a serving as a loading / unloading port for laundry, and the water tank. A rotating drum 103 that accommodates laundry, a door 104 that opens and closes an outer box opening 101a formed on the front surface of the outer box 101, an operation panel 105 having operation keys and a display unit, It has. The outer box opening 101a and the water tank opening 102a are opposed to each other, and the outer box opening 101a and the water tank opening 102a are watertightly connected by a packing 106. The door 104 is a pivot door that pivots forward by a hinge mechanism (not shown), and the water tank 102 is sealed in a watertight manner by closing the door 104.

  In addition, the rotating drum 103 is rotated by a motor (not shown) in a state where the water tank 102 is sealed in a watertight manner, thereby washing, rinsing, dehydrating, and the like for the laundry stored in the rotating drum 103 is performed. Is called.

  As shown in FIG. 5, the drainage port 102 b for draining the liquid in the water tank 102 (hereinafter referred to as washing water) to the outside of the water tank 102 is provided at the lower part of the water tank 102. An upper end portion of a drain pipe 107 is connected to the drain port 102b. On the other hand, the lower end of the drain pipe 107 is connected to a drain hose 109 and a circulation pipe 110 via a filter device 108. The washing water flowing through the drain pipe 107 can flow into the drain hose 109 or the circulation pipe 110 after passing through the filter device 108. Since this filter device 108 removes foreign matter such as lint in the washing water flowing through the drain pipe 107, entry of foreign matter into the drain hose 109 or the circulation pipe 110 can be prevented.

  An injection nozzle 102 c is provided above the water tank 102. The injection nozzle 102c is an inlet that guides the washing water in the circulation pipe 110 into the water tank 102 again as will be described later. The circulation pipe 110 has one end connected to the filter device 108 and the other end connected to the injection nozzle 102c. That is, the drain port 102b and the injection nozzle 102c are communicated with the outside of the water tank 102 by the drain pipe 107 and the circulation pipe 110.

The drain hose 109 is provided with a drain valve 111. A circulation pump 112 is provided at a connection point between the filter device 108 and the circulation pipe 110. When the drain valve 111 is in the open state, the washing water that has flowed through the drain pipe 107 and passed through the filter device 108 is drained to the outside of the drum type washing dryer B through the drain hose 109. Is done. On the other hand, when the drain valve 111 is in a closed state, the wash water that has flowed through the drain pipe 107 and passed through the filter device 108 flows into the circulation pump 112. The washing water in the circulation pump 112 is lifted to the upper part of the drum type washing and drying machine B through the circulation pipe 110 by the operation of the circulation pump 112. The raised washing water is supplied into the water tank 102 through the spray nozzle 102c. Such circulation of the washing water is performed in a washing process or a rinsing process.
Japanese Patent Laid-Open No. 10-235075 Japanese Patent Laid-Open No. 9-182887

  However, the conventional drum-type washing and drying machine B described above has the following two problems.

  The first problem is as follows. That is, since the injection nozzle 102c for introducing the washing water in the circulation pipe 110 to the water tank 102 is provided in the upper part of the water tank 102, in order to circulate the washing water, the washing water is at least the water tank. Must be lifted to the top of 102. Therefore, the circulation pump 112 that lifts the washing water must be a high-output pump, which increases energy consumption.

  The second problem is as follows. For example, various components such as a drive motor for the rotary drum 103, a drying system, a supply path for supplying tap water or bath water to the water tank 102, and the like are arranged in the drum type washing dryer B. However, as described above, when the spray nozzle 102c is provided in the upper part of the water tank 102, the circulation hose 110 must be disposed in a long path extending up and down of the washing machine. 110 prevents the placement of various other components.

  Therefore, the present invention has been made to solve the above-mentioned two problems, and its object is to provide a drum-type washing machine with high energy saving performance that does not require a high-output circulation pump, a circulation hose, etc. An object of the present invention is to provide a drum-type washing machine capable of shortening the arrangement path of the as much as possible.

  In order to solve the above-mentioned problems, a drum-type washing machine of the present invention includes a water tub and a drum opening that is disposed in the water tub so as to be rotatable about a rotation shaft and opens on one surface through which the rotation shaft passes. A rotating drum having a rotation inlet, a circulation inlet that is provided in the water tank and guides the liquid in the water tank to a predetermined circulation path, and is connected to the circulation inlet through the circulation path. A water supply port that is an inlet that leads again into the water tank, and a circulation pump that supplies the liquid in the circulation path to the water tank through the water supply port, the water supply port from the center of the drum opening. Is also provided below. At this time, with respect to those having a water tank opening facing the drum opening, it is preferable that the water supply port is provided below the water tank opening. If it does in this way, it is not necessary to distribute | circulate the said circulation path outside the drum, and the freedom degree of arrangement | positioning of another component can be raised.

  Moreover, it is good also considering the connection part of the said water supply port and the said circulation path as the highest position of the said circulation path. Accordingly, the lifting distance of the washing water by the circulation pump can be reduced, so that it is possible to realize a drum-type washing machine with high energy saving that does not require a high-output circulation pump.

  Further, it faces the drum opening portion of the rotating drum in which the rotating shaft is inclined with respect to a horizontal plane so that the surface having the drum opening portion is higher in the surface through which the rotating shaft passes. You may provide the said water supply opening in. In this case, since the laundry does not concentrate below the drum opening where the water supply port is arranged and blocks the water supply port, the washing water is applied to the laundry evenly by circulating water flow from the water supply port. Effects such as penetration can be exhibited.

  Furthermore, when the washing water is supplied from the water supply port toward the rotating shaft of the rotating drum, the washing water can be uniformly sprinkled on the laundry held in the rotating drum. Thus, it is possible to promote uniform penetration of the washing water.

  According to the present invention, since a liquid such as washing water (hereinafter referred to as washing water) can be supplied into the water tank from below the laundry outlet, which is below the water tank, the required distance for lifting the washing water is Get smaller. Therefore, a high-power circulation pump is not required for lifting the washing water, and a drum type washing machine with low energy consumption can be realized. Further, the circulation path for circulating the washing water is shortened, and the degree of freedom of arrangement of other components (rotary drum drive motor, drying system, supply path for supplying tap water or bath water to the water tank, etc.) is increased. Can be increased.

  Embodiments of the present invention will be described below with reference to the accompanying drawings for understanding of the present invention. In addition, the following embodiment is an example which actualized this invention, Comprising: It is not the thing of the character which limits the technical scope of this invention.

  FIG. 1 is a perspective view of a drum type washing / drying machine A according to an embodiment of the present invention, and FIG. 2 is a sectional view of the drum type washing / drying machine A as viewed from F3-F3 in FIG. Hereinafter, the drum type washing and drying machine A will be schematically described with reference to FIGS. 1 and 2.

  As shown in FIG. 1, the drum-type washing and drying machine A includes an outer box opening 1a on the front surface of the outer box 1, and an outer door 4 for opening and closing the outer box opening 1a is shown in the outer box 1. It is attached so as to be rotatable by a hinge mechanism that does not. An operation panel 6 is provided on the front surface of the outer box 1.

  As shown in FIG. 2, a bottomed cylindrical water tank 2 is provided inside the outer box 1. The water tank 2 is disposed horizontally and inclined at an angle θ (0 <θ <45 °) with respect to the horizontal direction so that the bottom 2d side is at a low position. Moreover, the said water tank 2 is equipped with the water tank opening part 2a opened facing the outer box opening part 1a. The water tank opening 2a is watertightly connected to the outer box opening 1a by a packing 20. When the external door 4 is closed, the rear surface portion of the external door 4 and the peripheral edge portion of the packing 20 are in watertight contact with each other, thereby maintaining the water tank opening 2a in watertight state.

  Inside the water tank 2, a bottomed cylindrical rotating drum 3 is installed. The rotating drum 3 is rotatable by being inclined by an angle θ with respect to the horizontal direction so that the rear side (the bottom side of the rotating drum 3) is located at a lower position around the rotating shaft L3-L3 coinciding with the cylindrical shaft. It is installed sideways. The rotating drum 3 includes a drum opening 3a that opens to face the water tank opening 2a on one surface in the direction of the rotation axis L3-L3. The drum opening 3a is opened in a circle around the intersection P3 with the rotation axis L3-L3. The laundry is put into and out of the rotating drum 3 through the outer box opening 1a, the water tank opening 2a, and the drum opening 3a.

  A drying system DS is disposed below the water tank 2. The ventilation path inside the drying system DS is configured to be immersed in washing water during the washing process or the rinsing process, and is a part of the drying system DS and disposed in the ventilation path of FIG. The blower fan (not shown) installed in the heater, the heater 14 and the like can be washed with washing water.

  FIG. 3 is a perspective view of the water tank 2. Hereinafter, among the bottom surfaces of the cylindrical shape of the water tank 2, the bottom surface which is provided with the water tank opening 2a (a laundry outlet / outlet) and is relatively higher by the angle θ is the high bottom surface HS, and the bottom 2d is the bottom surface 2d. A bottom surface formed at a relatively low position is referred to as a low bottom surface LS. In addition, the vertically lower part of the water tank 2 as a result of installing the water tank 2 so as to be inclined by the angle θ is referred to as a lower BS.

  As shown in FIG. 2, the drain BS 2 b for draining the wash water in the water tank 2 to the outside of the water tank 2 is provided in the lower BS of the water tank 2. Further, the position where the drain port 2b is provided is arranged so as to be a position on the downstream side in the blowing direction by the blower fan installed in the casing 13. An upper end portion of a drain duct 7 is connected to the drain port 2b. A lower end portion of the drainage duct 7 is connected to a filter device 8 disposed below the outside of the water tank 2. The filter device 8 has a filter (not shown) therein, and removes foreign matters such as lint of washing water passing through the filter device 8. A drainage hose 9 is connected below the filter device 8, and a circulation pump 12 is connected behind the filter device 8. The drain hose 9 is provided with a switching valve 11.

  A circulation hose 10 is connected to the circulation pump 12 so as to extend upward. One end of the circulation hose 10 is connected to the circulation pump 12, and the other end is connected to a water supply port 2c provided below the water tank opening 2a so as to face the drum opening 3a. The position of the water supply port 2c is lower than the intersection P3 which is the center position of the drum opening 3a. Moreover, it is comprised so that the connection part with the said water supply port 2c may become the highest position in the path | route of the said circulation hose 10. FIG. Note that the water supply port 2c faces the drum opening 3a means that when the water supply port 2c is projected onto the opening surface of the drum opening 3a, the projection area is within the range of the drum opening 3a. Say there is. The water supply port 2 c is an outlet to the water tank 2 where the washing water discharged from the water tank 2 through the drainage duct 7 to the filter device 8 is supplied again into the water tank 2 through the circulation hose 10. It is. Here, the drainage duct 7 and the circulation hose 10 are an example of a circulation path that allows the drainage port 2 b and the water supply port 2 c to communicate with each other outside the water tank 2. The drain port 2b, which is an inlet for leading the washing water in the water tank 2 to the circulation path, is an example of the circulation inlet.

  When the switching valve 11 is in the open state, the washing water that has flowed through the drainage duct 7 and passed through the filter device 8 is drained to the outside of the drum type laundry dryer A via the drainage hose 9. The On the other hand, when the switching valve 11 is in the closed state, the wash water that has flowed through the drain duct 7 and passed through the filter device 8 flows into the circulation hose 10. Since the circulation hose 10 is configured such that the connection portion with the water supply port 2 c is at the highest position, the washing water in the circulation hose 10 is connected to the circulation hose 10 by the operation of the circulation pump 12. Then, when the water is lifted up to the height of the water supply port 2c, the wash water is supplied from the water supply port 2c into the rotary drum 3, that is, into the water tank 2 through the drum opening 3a.

  In this way, the water supply port 2c is provided at a position lower than the center P3 of the drum opening 3a, so that the distance between the water supply port 2c and the laundry housed in the rotary drum 3 is increased. Therefore, the wash water supply flow from the water supply port 2c can be concentrated on the laundry. In addition, by providing the water supply port 2c below the water tank opening 2a facing the drum opening 3a, there is no need to extend the circulation hose 10 above the water tank 2, and the outside of the water tank 2 It does not disturb the arrangement of other components arranged in Moreover, since the connection part of the said circulation hose 10 and the water supply port 2c should just be made into the highest height of the circulation path containing the circulation hose 10, the said washing water by the said circulation pump 12 only by the part which the water supply port 2c is below. Since the necessary lifting distance is short, the circulating pump 12 having a small output can be used.

  By the way, the reason why the water supply port 2c is provided below the high bottom surface HS instead of below the low bottom surface LS is as follows. That is, the laundry in the rotating drum 3 tends to gather near the lower BS in the water tank 2 in the rotating drum 3. Accordingly, the laundry does not concentrate on the lower side of the drum opening 3a where the water supply port 2c is disposed, thereby blocking the water supply port 2c, so that the water flow from the water supply port 2c is applied to the laundry. On the other hand, it can be applied evenly to exert effects such as soaking of washing water.

  FIG. 4 shows an enlarged view of the water supply port 2c and its surroundings. As shown in FIG. 4, the water supply port 2 c is partially blocked by a lid member 15, thereby forming an injection nozzle. More specifically, the lid member 15 closes the lower side of the water supply port 2c and opens only the diagonally upper side, so that the washing water flow WS from the water supply port 2c is rotated on the rotating shaft of the rotary drum 3. It blows out toward L3-L3.

  The following effects are obtained depending on the direction of the balloon. That is, the laundry accommodated in the rotary drum 3 is lifted up from the wash water in the water tank as the rotary drum 3 is driven to rotate and falls into the wash water again. At this time, the laundry falls along the rotation axis L3-L3. Therefore, since the washing water can be sprinkled on the falling laundry, it is possible to enhance the effect of the washing water soaking in by circulation.

  As described above, according to the drum type washing / drying machine A according to the embodiment of the present invention, the washing water is supplied into the water tank through the water supply port 2c provided below the water tank 2, so that the washing As a result of shortening the required water lifting distance, the circulation pump 12 is not required to have a high output, so that the energy saving performance of the drum type washing and drying machine A can be improved. Further, the circulation path for circulating the washing water is shortened, and the degree of freedom of arrangement of other components (for example, the drive motor of the rotating drum 3, the drying system DS, etc.) can be increased.

  In the above-described embodiment, the drum type laundry dryer A in which the drying system DS is provided below the water tank 2 has been described as an example, but the scope of application of the present invention is not limited to this. That is, there is no problem in applying the technology of the present invention regardless of the position of the drying system DS or even if no drying system is provided.

1 is a schematic perspective view of a drum type washing and drying machine according to an embodiment of the present invention. 1 is a schematic cross-sectional view of a drum type washing and drying machine according to an embodiment of the present invention. 1 is a perspective view of a water tank of a drum type washing and drying machine according to an embodiment of the present invention. The enlarged view near the water supply opening | mouth of the drum type washing-drying machine which concerns on one Embodiment of this invention. The schematic sectional drawing of the conventional drum type washing-drying machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer box 2 Water tank 2a Water tank opening 3 Rotating drum 3a Drum opening 7 Drain duct 8 Filter device 10 Circulating hose 12 Circulating pump 15 Cover member

Claims (5)

A water tank, a rotary drum that is rotatably arranged around the rotation axis in the water tank and has a drum opening that opens on one surface through which the rotation axis passes, and a liquid that is provided in the water tank and that is in the water tank. A circulation inlet which is an inlet leading to the circulation path, a water supply port which is connected to the circulation inlet via the circulation path and leads the liquid in the circulation path again into the water tank, and via the water supply opening A drum-type washing machine comprising: a circulation pump that supplies liquid in the circulation path into the rotary drum
The drum-type washing machine, wherein the water supply port is provided below the center of the drum opening. The water tank has a water tank opening that opens facing the drum opening,
The drum type washing machine according to claim 1, wherein the water supply port is provided below the water tank opening.   The drum type washing machine according to claim 1 or 2, wherein a connection portion between the water supply port and the circulation path is located at the highest position of the circulation path.   The rotating shaft is inclined with respect to a horizontal plane so that the surface having the drum opening is higher in the surface through which the rotating shaft passes, and the water supply port is formed in the drum opening. The drum type washing machine according to any one of claims 1 to 3, wherein the drum type washing machine is provided so as to face.   The drum type laundry according to any one of claims 1 to 4, wherein the supply of the liquid in the circulation path from the water supply port is performed obliquely upward toward the rotating shaft of the rotating drum. Machine.

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