CN201785630U - Drum washing machine - Google Patents

Abstract

The utility model provides a drum washing machine comprising a rotating drum, a water tank, a motor and a water circulation system. The water circulation system is provided with a water inlet, a water guide, a plurality of ejection ports and a plurality of ejection ports. The front of the front end wall of the rotary drum is opened within a predetermined circumferential range, and the back of the front wall of the water tank has a guide surface for guiding the washing water sprayed from the plurality of spray ports to the inside of the rotary drum, so that the washing water sprayed from the multiple spray ports The washing water flows along the back surface and the guide surface of the front end wall of the water tank, and is sprayed from a plurality of injection ports, and the opening direction of the plurality of injection ports and the plurality of injection ports faces the rotation center side of the rotary drum.

Description

front load washing machine

technical field

The utility model relates to a drum type washing machine.

Background technique

The structure of the conventional front-loading type washing machine is as follows. That is, the rotating drum is formed in a bottomed cylindrical shape, and is installed in the water tank so that the rotating shaft is horizontal from the front side of the opening toward the back side serving as the bottom, or is inclined downward from the horizontal direction. Then, the rotary drum is driven to rotate, and the laundry accommodated in the rotary drum is washed. There is also known a front-loading washing machine having a circulation function for circulating wash water in a water tank by a circulation pump (for example, refer to JP-A-10-127978 and JP-A-2008-073128).

The drum-type washing machine of Japanese Patent Application Laid-Open No. 10-127978 has a plurality of injection ports which are angularly shifted from each other, and sprays into the rotary drum from the front side of the rotary drum to the central side of the rotary drum by means of a circulation member. As a result, a large-volume to-be-processed object can be washed efficiently.

The pump casing of the circulation pump of the front-loading-type washing machine disclosed in JP-A-2008-073128 has two discharge ports for switching discharge according to forward and reverse rotation of the pump impeller. Accordingly, the direction in which the washing water is sprayed changes during washing and rinsing in accordance with the forward and reverse rotation of the rotary drum.

However, in the water circulation technology disclosed in Japanese Patent Application Laid-Open No. 10-127978, since a plurality of injection ports which are slightly shifted in angle from each other are formed to spray columnar showers, each shower is located in a local area. In order to make up for the localized range of the spraying flow, multiple jetting ports at different angles are formed. However, in a drum-type washing machine aimed at saving water, a small amount of water needs to be used for water circulation, and there is a limit to using the number of jetting ports to compensate.

In addition, the water circulation technology disclosed in JP-A-2008-073128 has two discharge ports that switch discharge according to forward and reverse rotation of the pump impeller. Accordingly, the directions in which the washing water is sprayed during washing and rinsing are changed in accordance with the forward and reverse rotation of the rotary drum. The spray stream is sprayed on the laundry that falls when the rotary drum rotates in the forward and reverse directions, increasing the weight of the laundry and improving the washing power of the beat washing. However, especially in the case of a large-volume laundry, it cannot be in the state of beating washing, and the effect of beating washing cannot be obtained.

Utility model content

The main purpose of the utility model is to provide a method to improve the efficiency of spraying the washing water into the rotating drum from the spray side passage of the self-circulating pump of the washing water when the washing water in the tank is circulated by the circulating pump and the washing water Drum-type washing machine with high penetration characteristics, detergency to laundry.

Therefore, the drum-type washing machine of the present invention includes: a rotating drum formed in a bottomed cylinder; The method is provided with a rotating drum; a motor is used to control the rotation of the rotating drum; a water circulation system uses a circulating pump to circulate the washing water in the tank to the rotating drum through a circulation path connected to the tank, and the drum washing machine can drive the motor and the circulating pump And at least one of the washing process and the rinsing process is performed, wherein the water circulation system is provided with: a water inlet, which is arranged on the outer peripheral wall of the water tank, and connected to the discharge side passage from the circulation pump; a water guide, which is arranged on the water tank. The front end wall is connected with the water inlet and diverts the washing water; a plurality of ejection outlets are arranged in the water guiding path for ejecting the washing water between the back of the front end wall of the water tank and the front of the front end wall of the rotary drum; the plurality of ejection outlets , used to spray the washing water sprayed from a plurality of outlets into the rotary drum, the plurality of outlets open within a specified circumferential range between the back of the front end wall of the water tank and the front of the front end wall of the rotary drum, and the front end of the water tank The back surface of the wall has a guide surface for allowing the washing water jetted from the plurality of jets to flow toward the inside of the rotary drum, and the washing water jetted from the plurality of jets flows along the back side and the guide surface of the front end wall of the water tank. It is sprayed from a plurality of jetting ports, and the opening direction of the water inlet, the plurality of jetting ports, and the plurality of jetting ports faces the rotation center side of the rotary drum.

Such a drum type washing machine can reduce the loss of water flow pressure at the water inlet in the water circulation system as much as possible. In addition, since the water flow pressure of the spray ports can be ensured to the maximum, even with a small amount of water, it is possible to spray wash water with a high water flow pressure from a plurality of spray ports. Therefore, stronger washing water can be sprayed on small-volume and large-volume laundry, and the penetration of the washing water into the laundry and the washing effect can be improved.

Description of drawings

FIG. 1 is a cross-sectional view showing a schematic structure of a front-loading washing machine according to Embodiment 1 of the present invention.

FIG. 2A is a cross-sectional view of a circulation pump used in the drum type washing machine.

Fig. 2B is a side view of a circulation pump used in the drum type washing machine.

Fig. 3A is a perspective view of main parts of the water tank of the front-loading washing machine.

Fig. 3B is a rear view of the front wall of the water tank of the front-loading washing machine seen from the inside.

Fig. 4 is a cross-sectional view of the vicinity of the water guide path of the water circulation path of the front-loading washing machine.

Fig. 5 is a front view showing a state of spraying washing water of the front-loading washing machine.

6 is a rear view of the front wall of the front wall of the drum-type washing machine according to Embodiment 2 of the present invention viewed from the direction of the rotation axis of the rotary drum.

Fig. 7 is a rear view of the front wall of the water tank of the front-loading-type washing machine according to Embodiment 3 of the present invention seen from the inside.

Fig. 8A is a rear view of the front wall of the water tank of the front-loading-type washing machine according to Embodiment 4 of the present invention seen from the inside.

Fig. 8B is an enlarged cross-sectional view of the water guide of the front-loading washing machine taken along line L-L.

Fig. 8C is an enlarged cross-sectional view of the water guide of the front-loading washing machine cut along the R-R line.

Fig. 9A is a rear view of the front wall of the water tank of the front-loading-type washing machine according to Embodiment 5 of the present invention seen from the inside.

Fig. 9B is an enlarged cross-sectional view of the water guide of the front-loading washing machine taken along line L1-L1.

Fig. 9C is an enlarged cross-sectional view of the water guide of the front-loading washing machine cut along line L2-L2.

Fig. 9D is an enlarged cross-sectional view of the water guide of the front-loading washing machine cut along line L3-L3.

Fig. 10 is a front view showing a state of spraying washing water of the front-loading-type washing machine.

Detailed ways

Hereinafter, embodiment of this invention is demonstrated, referring drawings. In addition, this invention is not limited to this embodiment.

(Embodiment 1)

1 is a cross-sectional view showing a schematic structure of a drum-type washing machine according to Embodiment 1 of the present invention, FIG. 2A is a cross-sectional view of a circulation pump used in the drum-type washing machine, and FIG. 2B is a side view of the circulation pump used in the drum-type washing machine. view.

According to the mode setting and control program, the front-loading washing machine according to Embodiment 1 has automatic control of the motor 6, the water supply system 7, the drainage system 8, and the drying system 9 shown in FIG. function of the drying process. However, the drying system 9 can be omitted. In addition, in addition to the above, the water circulation system 16 can be used to circulate the washing water in the water tank 3 during the washing preparation process, the washing process, and the rinsing process as needed, so as to achieve rapid dissolution of the detergent and prevent localized washing of the detergent. Concentrates to improve washing and rinsing functions.

In addition, the water supply system 7 can supply water timely by opening and closing the electromagnetic valve as shown by the solid arrow, and can also inject the detergent in the detergent storage part into the water tank 3 timely by using the water supply. The drainage system 8 can drain water when necessary, such as at the end of the washing process or at the end of the rinsing process, as indicated by the dotted arrows by opening and closing the drain valve 19 . In addition, the water circulation system 16 repeatedly sucks the washing water in the water tank 3 by the circulation pump 20 and returns the washing water to the water tank 3 .

That is, the front-loading washing machine according to Embodiment 1 of the present invention includes rotary drum 4 , water tank 3 , motor 6 , and water circulation system 16 , and at least one of the washing process and the rinsing process is performed by driving motor 6 and circulation pump 20 . Here, the rotary drum 4 is formed in a bottomed cylindrical shape. In the water tank 3 , the rotating drum 4 is installed so that the direction of the rotating shaft 10 of the rotating drum 4 is horizontal or inclined downward from the horizontal direction from the front side toward the rear side serving as the bottom. The motor 6 controls the rotation of the rotary drum 4 . The water circulation system 16 uses the circulation pump 20 to circulate the washing water in the water tank 3 to the rotary drum 4 through a circulation path connected to the water tank 3 .

Modes such as the operation process and selection of various functions are input from the operation panel 21 provided on the upper front surface of the washing machine main body 2 . Based on the input information, the control system 22 notifies the user of the operation progress and the like by displaying on the display means on the operation panel 21 . In addition, when the component setting operation start is set by the input of the operation panel 21, the data from the water level detection component and the like that detect the water level in the water tank 3 are input to start driving, and the operation of the drain valve 19, the water supply valve, etc. is controlled, and the operation is performed. Washing, dehydration, drying and other operations.

In addition, a main body opening 2b is provided on the front side of the washing machine main body 2, and it is configured to put the laundry into the rotary drum through the second opening 13 on the front side of the water tank 3 and the first opening 54 on the front side of the rotary drum 4. 4 or take out the laundry from the rotating drum 4. The opening and closing door 5 is provided in the main body opening 2b. The opening and closing door 5 closes the second opening 13 with the sealing member 14 attached to the mouth edge of the second opening 13, and the opening and closing door 5 can be opened.

In addition, the drive of the rotary drum 4 includes a forward and reverse continuous rotation drive mode and a forward and reverse arc rotation drive mode in which rapid forward and reverse arc rotation is performed. Here, the rapid positive arc rotation is the rotation of the rotary drum 4 greater than 90 degrees and less than 180 degrees. The forward and reverse arc rotation drive mode alternately repeats rapid forward arc rotation and rapid reverse arc rotation. In the forward and reverse continuous rotation driving mode, the rotating drum 4 is repeatedly and continuously rotated alternately in the forward and reverse directions at a rotation speed at which the laundry lifted by the rotation of the rotating drum 4 falls from a height position dominated by its own weight. In the washing step, or the washing step and the rinsing step, the forward and reverse arc rotation drive mode and the forward and reverse continuous rotation drive mode are alternately performed.

Thus, through the rapid arc rotation and emergency braking of the rotating drum 4 greater than 90 degrees and less than 180 degrees, the laundry is lifted to a position greater than 90 degrees and less than 180 degrees to the maximum. In addition, the brake state is produced by emergency braking at the last stage of lifting the laundry, and the laundry is peeled off from the inner surface of the rotary drum 4 by the inertia and self-weight of the laundry, and can be dropped to the same position as the laundry by its own weight. Lift the left and right opposite sides. Therefore, a high unwinding action can be exerted particularly on the laundry that is sufficiently wetted with washing water and is in a loose and slippery state, and a mechanical force can be applied to the laundry, thereby improving washing performance.

Further, in the forward and reverse arc rotation drive mode, the forward rapid forward arc rotation and the reverse rapid reverse arc rotation of the arc rotational drive are alternately repeated. Using the forward and reverse arc rotation driving mode, the lifting position and dropping position of the laundry under the rapid arc rotation driving alternately in the forward and reverse directions are alternately exchanged left and right in each arc rotation driving. Therefore, it is possible to avoid entanglement with laundry and to further improve the untangling effect. In addition, since the number of mechanical forces received by the laundry can be increased, the washing performance can be improved.

In addition, due to the high unraveling action, it is possible to suppress the entanglement of the laundry items during the washing and rinsing steps. Thus, the effective beat washing in the forward and reverse arc rotation mode can be performed for a long time, and the washing effect and the rinsing effect can be improved.

In addition, if only the positive and negative arc rotation drive mode is used, the entanglement, twisting, and wrinkling of the laundry can be alleviated, but it is difficult to change the position of the laundry in the vertical direction, and the laundry at the bottom of the rotary drum 4 is difficult to move. Therefore, washing unevenness is likely to occur, but by using the forward and reverse continuous rotation drive mode together, the position exchange of the laundry in the up and down direction can be realized. That is, the entanglement, twisting, and wrinkling of the laundry in the forward and reverse continuous rotation drive mode are reduced. In addition, the imbalance of the mechanical force acting on the laundry in the normal and reverse arc rotation driving mode is reduced, so that two different actions can be applied to the laundry in washing and rinsing by utilizing the two modes. That is, specifically, by using the positive and negative arc rotation driving mode, the entanglement, twisting, and wrinkling of the laundry can be reduced, and the reliable hand scrubbing action can be applied. In addition, using the forward and reverse continuous rotation drive mode, the laundry is continuously moved greatly, and the unevenness is reduced while washing is performed, and effective washing action is applied to uniform and stubborn stains.

As shown in FIG. 1, the circulation pump 20 is fixed on the bottom plate 2a. The discharge-side passage 16b of the water circulation system 16 from the circulation pump 20 extends toward the front of the washing machine main body 2 where the second opening 13 is located. Specifically, as shown in FIG. 2A and FIG. 2B , the pump housing 20 b made of resin in which the impeller 20 a is accommodated in the circulation pump 20 is the opening side of the circulation pump 20 . In addition, the circulating pump 20 is integrally contacted with the bearing partition 20d1 at the front end of the motor housing 20d of the circulating motor 20c, and the impeller 20a is directly connected to the motor shaft 20e.

In addition, FIG. 3A is a perspective view of main parts of the water tank of the drum-type washing machine according to Embodiment 1 of the present invention, FIG. 3B is a rear view of the front wall of the water tank of the drum-type washing machine viewed from the inside, and FIG. A cross-sectional view near the water guide of the water circulation channel. As shown in FIG. 3A , a bulging portion 3 a that bulges forward in a substantially U-shape is formed below a front wall 3 h of the water tank 3 . As shown in FIG. 3B and FIG. 4 , the covering member 55 whose outer shape is substantially the same as that of the bulging portion 3 a is screwed together so that the packing 55 a is sandwiched between the covering member 55 and the bulging portion 3 a from the inside. installed to form the water guide 55b.

As shown in FIG. 3A , at the lower left portion (lower right portion in FIG. 3B ) of the bulging portion 3 a, that is, at a lower left position than the center of rotation of the rotating drum 4, there is a hole that opens in the vertical direction of the rotating drum 4. Water inlet 51. In order to close the opening of the water inlet 51 , the opening of the water inlet 51 is connected to the discharge side passage 16 b of the water circulation system 16 . Moreover, the notch part 55c of the non-sealing structure which does not include the packing material 55a is formed in each upper end part of the covering member 55 formed in substantially U shape. Utilizing the notch 55c, at the upper end portion of the water guiding path 55b, between the notch 55c and the back surface of the front end wall 3h of the water tank 3 corresponding to the notch 55c, an ejection port 55d having an opening extending along the circumferential area is formed. Here, the water guide path 55b is formed by branching into a substantially U-shape from the bulging portion 3a and the covering member 55 .

The washing water pressurized by the circulation pump 20 flows into the water guide passage 55 b from the water inlet 51 through the discharge side passage 16 b of the water circulation system 16 . Then, the washing water is sprayed from the spray port 55d between the back surface of the front end wall 3h of the water tub 3 and the front surface of the front end wall 4b of the rotary drum 4 corresponding to the front end wall 3h. The wash water passes through the flow path 52 formed between the rear surface of the front end wall 3h and the front surface of the front end wall 4b. Furthermore, the washing water is sprayed from the injection port 53 into the rotary drum 4 (in the direction of the arrow a in FIG. 4 ) through the second opening 13 provided on the front side of the water tub 3 and guided by the guide surface 56 facing the rotary drum 4 .

In addition, the opening direction of the water inlet 51, the discharge port 55d, and the injection port 53 is toward the substantially rotation center side of the rotary drum 4 (direction of the arrow mark of FIG. 3B). In addition, between the water inlet 51 at one position and the discharge ports 55d at two positions, each is connected by a closed water guide path 55b. Therefore, especially for the discharge port 55d far from the water inlet 51, the internal shape of the water guide 55b suppresses a drop in the flow pressure of the wash water from the water inlet 51 to the discharge port 55d.

In this way, the water circulation system 16 is provided with a water inlet 51 , a water guiding path 55 b , a plurality of ejection ports 55 d and a plurality of ejection ports 53 . Here, the water inlet 51 is provided on the outer peripheral wall of the water tank 3 and is connected to the discharge-side passage 16 b from the circulation pump 20 . The water guiding path 55b is provided on the front end wall 3h of the water tank 3, is connected to the water inlet 51, and distributes the washing water. A plurality of spray ports 55d are provided in the water guide path 55b, and spray washing water between the back of the front end wall 3h of the water tank 3 and the front of the front end wall 4b of the rotary drum 4. As shown in FIG. The wash water sprayed from multiple spray ports 55d is sprayed into rotary drum 4 from multiple spray ports 53 .

Moreover, 55 d of several discharge ports are opened in the predetermined|prescribed circumferential direction range between the front-end wall 3h back surface of the water tub 3, and the front-end wall 4b front of the rotary drum 4. As shown in FIG. Further, the back surface of the front end wall 3h of the water tub 3 has a guide surface 56 for allowing the washing water sprayed from the plurality of spray ports 55d to flow toward the inside of the rotary drum 4 . Then, the washing water sprayed from the plurality of spray ports 55 d flows along the back surface of the front end wall 3 h of the water tank 3 and the guide surface 56 , and is sprayed from the plurality of spray ports 53 . And the opening direction of the water inlet 51, 55 d of several ejection ports, and the several ejection port 53 faces the rotation center side of the rotary drum 4. As shown in FIG. With the above structure, the front-loading-type washing machine according to Embodiment 1 of the present invention can suppress the flow pressure loss of the wash water from the water inlet 51 to the discharge port 55d. Therefore, even with a small amount of water, high-pressure wash water can be sprayed from the two spray ports 53, and more powerful wash water can be sprayed on both small-volume and large-volume laundry. As a result, since the front-loading-type washing machine according to Embodiment 1 of the present invention can improve the penetration property of washing water into the laundry, the washing effect can be improved.

Moreover, FIG. 5 is a front view which shows the state which sprays wash water from the front-loading-type washing machine in Embodiment 1 of this invention. When the laundry at the start of washing is bulky without washing water, even if the vicinity of the spray port 53 on the left side shown in FIG. The spray port 53 sprays toward the vicinity of the first opening 54 of the rotary drum 4 . Then, the laundry in the vicinity of the spray port 53 is quickly wetted, and the volume is reduced, so that the clogging near the spray port 53 on the left side caused by the laundry can be solved.

In addition, the front-loading-type washing machine according to Embodiment 1 of the present invention can effectively use washing water regardless of the amount of laundry in rotary drum 4 . In addition, because the ejection port 55d is located at a position not in contact with the laundry in the rotary drum 4, it can prevent the laundry from being caught and affecting necessary actions such as washing, rinsing, and drying, or preventing damage or breaking the laundry. . The spraying effect of the washing water is improved by combining the action of exchanging the laundry up and down in the forward and reverse continuous rotation drive mode and the action of exchanging the laundry left and right in the forward and reverse arc rotation drive mode.

In addition, the drum-type washing machine according to Embodiment 1 of the present utility model can increase the number of spray ports 55d and change the shape of the spray port 53 corresponding to the spray port 55d, so that the rotation of the washing water relative to the rotation shaft 10 of the rotary drum 4 can be increased. The spray angle is different from the spread angle of the spray.

In this way, the expansion width toward the direction of the rotating shaft 10 of the rotary drum 4 from the one spray port 53 is small, and the spray toward the inner side of the rotary drum 4 is performed. In addition, spraying with a wide spread width is performed from the other spray port 53, and the laundry in the inner portion near the center of rotary drum 4, which is difficult to wet, is also quickly wetted, thereby improving the washing effect. In addition, by allowing washing water to infiltrate the laundry in the inner portion near the center of rotary drum 4 to reduce the volume of the laundry, the laundry in rotary drum 4 tends to move earlier. Therefore, the effect of beat washing can also be improved, and the washing water can be sprayed to the entire laundry through the gap formed by the volume reduction of the laundry, and the washing effect can be further improved.

In addition, in this Embodiment 1, although 55 d of discharge ports are provided in two positions on the left and right, it is also possible to have discharge ports in three or more positions.

(Embodiment 2)

6 is a rear view of the front wall of the front wall of the drum-type washing machine according to Embodiment 2 of the present invention viewed from the direction of the rotation axis of the rotary drum. In Embodiment 2 of this invention, the same code|symbol is attached|subjected to the same component as Embodiment 1, the description is abbreviate|omitted, and a different point is demonstrated.

As shown in FIG. 6 , in a plane perpendicular to the direction of the rotating shaft 10 of the rotating drum 4 , a line connecting the rotation center of the rotating drum 4 and the water inlet 51 is a first line 61 . Then, on both sides of the first line 61 in this plane, a plurality of discharge ports 55d having different distances from the water inlet 51 are provided. The line connecting the center of rotation of the rotary drum 4 and the discharge port 55d near the water inlet 51 is the second line 62, and the line connecting the center of rotation of the rotary drum 4 and the discharge port 55d far from the water inlet 51 is the third line. 63. In addition, the angle α is the angle formed by the first line 61 and the second line 62 , and the angle β is the angle formed by the first line 61 and the third line 63 . Furthermore, a line obtained by projecting a vertical line passing through the rotation center of rotary drum 4 onto a plane perpendicular to the direction of rotation axis 10 of rotary drum 4 is fourth line 64 .

The water inlet 51 is arranged at an angle γ from the fourth line 64 . That is, the angle formed by the first line 61 and the fourth line 64 is an angle γ. When the angle α=angle β holds true, the washing water sprayed from the water inlet 51 through the water guide passage 55b, the spray port 55d, and the spray port 53 are sprayed at substantially equal pressure.

On the other hand, in the case of angle α<angle β, the jetting of the washing water jetted from the jet port 53 on the side of the angle α has a higher flow pressure than the case of the angle α=angle β. Conversely, the jetting of the washing water jetted from the jetting port 53 on the side of the angle β has a lower water flow pressure than the case where the angle α=the angle β.

In such a front-loading washing machine according to Embodiment 2 of the present invention, angle α<angle β. According to the above configuration, as shown in FIG. 5 , the wash water from the spray port 53 on the left side is sprayed at an angle having a substantially linear expansion width in the substantially upward direction as in the spray flow shape A as seen from the front. The wash water from the spray port 53 on the right side is sprayed in a fan shape having a wider spread width than the spray shape A in the downward direction of the spray shape A, as seen from the front.

That is, the washing water sprayed from the respective spray ports 55d has different flow pressures, and is sprayed from the left and right spray ports 53 into the rotary drum 4 through the first opening 54 in FIG. 1 . Therefore, it is possible to realize sprays with different spray angles with respect to the rotary shaft 10 of the rotary drum 4 , and sprays with different spray widths and spread angles.

Moreover, in this embodiment, the water inlet 51 is arrange|positioned in FIG. 6, and the distance with the discharge port 55d of the right side is shorter than the distance with the discharge port 55d of the left side. Therefore, the discharge water pressure of the short-distance right discharge port 55d can be higher than the discharge water pressure of the long-distance discharge port 55d. In addition, when washing water is sprayed from the spray port 53 near the water inlet 51, the spray angle with respect to the rotation shaft 10 of the rotary drum 4 can be increased compared with the spray from the spray port 53 far from the water inlet 51. . Furthermore, it is possible to increase the spray water pressure and reduce the spread angle of the spray, and it is also possible to spray the washing water on the laundry on the rear side (inside) of the rotary drum 4 .

On the other hand, when the washing water is sprayed from the spray port 53 which is far from the water inlet 51, compared with spraying the wash water from the spray port 53 which is short from the water inlet 51, the water flow rate relative to the rotating drum 4 can also be reduced. Spray angle of rotation axis 10. Furthermore, it is possible to reduce the spray water pressure, increase the spread angle of the spray, and spray the washing water to the laundry on the front side (opening side) of the rotary drum 4 .

Therefore, from the injection port 53 on the left side shown in FIG. 5 , which is an inverted position from FIG. 6 , spraying is performed toward the inner side of the rotary drum 4 with a small spread width toward the rotating shaft 10 of the rotary drum 4 . Therefore, washing water can be sprayed even to the laundry in the inner portion near the center of rotary drum 4 that is difficult to be wetted by the spray from the right spray port 53 having a wide spread width. In addition, by allowing washing water to infiltrate the laundry at the inner portion near the center of rotary drum 4 to reduce the volume of the laundry, the laundry can be easily moved within rotary drum 4 . As a result, the beat washing effect during washing is also improved, and the washing water can be sprayed to the entire laundry from the gap formed by the volume reduction of the laundry.

In addition, even if the laundry at the start of washing is bulky in a state that does not contain washing water, and the vicinity of the injection port 53 on the left side shown in FIG. 5 is clogged in the circumferential direction by the laundry, the following the circumstances described. That is, spraying with a wide spread width is performed from the spray port 53 on the right side toward the vicinity of the first opening 54 of the rotary drum 4, and the laundry near the spray port 53 is quickly wetted and the volume is reduced. Thereby, the clogging near the jet port 53 on the left side caused by the laundry is resolved.

Furthermore, if the position of the water inlet 51 is set on the disposition side of the circulation pump 20 , the discharge-side passage 16 b connected from the circulation pump 20 to the water inlet 51 can be minimized. Furthermore, the loss of the water flow pressure in the water circulation system 16 can be reduced as much as possible, and the water flow pressure of the discharge port 55d can be ensured to the maximum. Thus, even with a small amount of water, it is possible to spray wash water with a higher water flow pressure from the spray port 53, and more powerful wash water can be sprayed for small-volume or large-volume laundry. Enhanced, so it can improve the washing effect.

Moreover, the spraying effect of the washing water is further improved by combining the action of exchanging the laundry up and down in the forward and reverse continuous rotation drive mode and the action of exchanging the laundry left and right in the forward and reverse arc rotation drive mode.

In addition, in this embodiment, the same effect can be exhibited even if it is the structure which reversed the injection port 53, 55 d of discharge ports, and the water inlet 51 left and right.

(Embodiment 3)

Fig. 7 is a rear view of the front wall of the water tank of the front-loading-type washing machine according to Embodiment 3 of the present invention seen from the inside. In Embodiment 3 of the present invention, the same reference numerals are assigned to the same components as those in Embodiment 1 or Embodiment 2, and description thereof will be omitted.

As shown in FIG. 7, the opening cross-sectional area of the water inlet 51 is S51, and in the discharge port 55d arranged at two positions on the left and right with respect to the rotating shaft 10, the front (the front here refers to the front view direction of FIG. 5) left The opening cross-sectional area of the ejection port 55d on the side is S55d (L), the opening cross-sectional area of the ejection port 55d on the right side of the front (the front here refers to the front view direction of FIG. 5 ) is S55d (R), and the cross-sectional area ratio is S55d. (L)/S51=SL, the cross-sectional area ratio S55d(R)/S51=SR.

When the cross-sectional area ratio SL=SR (>1 or ≤1) is established, the two jets of the washing water jetted from the water inlet 51 through the water guide path 55b and jetted from the jet port 55d and jetted from the jet port 53 become Approximately equal discharge pressure.

On the other hand, when the cross-sectional area ratio SL<SR, SL<1, and SR≥1 hold true, the water flow pressure ratio of the washing water generated from the water inlet 51 to the discharge port 55d on the left side of the front is compared to the cross-sectional area ratio SL=SR The water flow pressure at the time of establishment is high. The water flow pressure when the washing water sprayed from the spray port 53 on the front left side is stronger than the water flow pressure when the cross-sectional area ratio SL=SR holds true. Conversely, the flow pressure of the wash water sprayed from the spray port 53 on the front right side is lower than the water flow pressure when the cross-sectional area ratio SL=SR holds true.

In such a drum-type washing machine according to Embodiment 3 of the present invention, the ratio of the opening cross-sectional area of the plurality of discharge ports 55d to the opening cross-sectional area of the water inlet 51 is made different.

According to the above configuration, as shown in FIG. 5 , the wash water from the spray port 53 on the left side is sprayed at an angle having a substantially linear expansion width in the substantially upward direction as in the spray flow shape A as seen from the front. The wash water from the spray port 53 on the right side is sprayed in a fan shape having a wider spread width than the spray shape A in the downward direction of the spray shape A, as seen from the front.

That is, the washing water sprayed from each spray port 55d has different water flow pressures, and is sprayed into rotary drum 4 from left and right spray ports 53 through first opening 54 in FIG. 1 . Therefore, it is possible to realize sprays with different spray angles with respect to the rotary shaft 10 of the rotary drum 4 , and sprays with different spray widths and spread angles.

Therefore, from the injection port 53 on the left side shown in FIG. 5 , which is an inverted position from FIG. 7 , spraying is performed toward the inner side of the rotary drum 4 with a small spread width toward the rotating shaft 10 of the rotary drum 4 . Therefore, washing water can be sprayed even to the laundry in the inner portion near the center of rotary drum 4 that is difficult to be wetted by the spray from the right spray port 53 having a wide spread width. In addition, by allowing washing water to infiltrate the laundry at the inner portion near the center of rotary drum 4 to reduce the volume of the laundry, the laundry can be easily moved within rotary drum 4 . As a result, the beat washing effect during washing is also improved, and the washing water can be sprayed to the entire laundry from the gap formed by the volume reduction of the laundry.

In addition, even if the laundry at the start of washing is bulky in a state that does not contain washing water, and the vicinity of the injection port 53 on the left side shown in FIG. 5 is clogged in the circumferential direction by the laundry, the following the circumstances described. That is, spraying with a wide spread width is performed from the spray port 53 on the right side toward the vicinity of the first opening 54 of the rotary drum 4, and the laundry near the spray port 53 is quickly wetted and the volume is reduced. Thereby, the clogging near the jet port 53 on the left side caused by the laundry is resolved.

Moreover, the spraying effect of the washing water is further improved by combining the action of exchanging the laundry up and down in the forward and reverse continuous rotation drive mode and the action of exchanging the laundry left and right in the forward and reverse arc rotation drive mode.

In addition, in this embodiment, the same effect can be exhibited even if it is the structure which reversed the injection port 53, 55 d of discharge ports, and the water inlet 51 left and right.

(Embodiment 4)

Fig. 8A is a rear view of the front wall of the front wall of the drum-type washing machine according to Embodiment 4 of the present invention, and Fig. 8B is an enlarged cross-sectional view when cutting the water guide of the drum-type washing machine on the line L-L, and Fig. 8C is An enlarged cross-sectional view when the R-R line cuts through the water guide of the front-loading washing machine. In Embodiment 4 of the present invention, the same reference numerals are assigned to the same components as in Embodiment 1, and description thereof will be omitted.

As shown in FIG. 8A , the water inlet 51 communicates with the discharge ports 55d arranged at two positions on the left and right with respect to the rotating shaft 10 via a closed substantially planar water guide 55b extending in a substantially U-shape. Here, as shown in Figure 8B and Figure 8C, the cross-sectional area of the water guide 55b on the left side of the front (the front here refers to the front view direction of Figure 5) is S55b (L), and the right side of the front (the front here is refers to the front view direction of FIG. 5) and the cross-sectional area of the water guiding path 55b is S55d (R).

In the two water guiding paths 55b, when the cross-sectional area S55b (L)=the cross-sectional area S55d (R) is established, the water jetted from the water inlet 51 through the water guiding path 55b is ejected from the ejection port 55d and ejected from the jet port 53. Both jets of wash water have substantially equal pressure.

On the other hand, when the cross-sectional area S55b(L)<the cross-sectional area S55d(R) holds true, the water flow pressure ratio of the washing water from the water inlet 51 to the discharge port 55d on the front left side is the cross-sectional area S55b(L)=the cross-sectional area S55b(L) The water flow pressure when the area S55d(R) is established is high. Conversely, the flow pressure of the washing water sprayed from the spray port 53 on the front right side is lower than the water flow pressure when the cross-sectional area S55b (L) = cross-sectional area S55d (R).

In such a front-loading-type washing machine according to Embodiment 4 of the present invention, water guiding path 55b has various cross-sectional areas.

According to the above configuration, as shown in FIG. 5 , the wash water from the spray port 53 on the left side is directed relatively upward as seen from the front as in the spray flow shape A, and is sprayed at an angle having a substantially linear spread width. The washing water from the spray port 53 on the right side is sprayed toward the downward direction of the spray flow shape A as in the spray flow shape B as viewed from the front, and is sprayed at an angle having a fan-shaped spread width.

That is, the washing water sprayed from the respective spray ports 55 d has different water flow pressures, and is sprayed from the left and right spray ports 53 through the first opening 54 into the rotary drum 4 . Therefore, it is possible to realize sprays with different spray angles with respect to the rotary shaft 10 of the rotary drum 4 , and sprays with different spray widths and spread angles.

In addition, if the cross-sectional area at a predetermined position of the water guide 55b is reduced, the discharge pressure of the discharge port 55d connected to the water guide 55b can be increased. Furthermore, in spraying the wash water from spray port 53, the spray angle with respect to rotation shaft 10 of rotary drum 4 can be increased, and the spray width and spread angle can be further reduced.

From the injection port 53 on the left side shown in FIG. 5 , which is a reversed position from FIG. 8 , jets are sprayed toward the inner side of the rotary drum 4 with a small spread width toward the rotating shaft 10 of the rotary drum 4 . Therefore, washing water can be sprayed even to the laundry in the inner portion near the center of rotary drum 4 that is difficult to be wetted by the spray from the right spray port 53 having a wide spread width. In addition, by allowing washing water to infiltrate the laundry at the inner portion near the center of rotary drum 4 to reduce the volume of the laundry, the laundry can be easily moved within rotary drum 4 . As a result, the beat washing effect during washing is also improved, and the washing water can be sprayed to the entire laundry from the gap formed by the volume reduction of the laundry.

In addition, even if the laundry at the start of washing is bulky in a state that does not contain washing water, and the vicinity of the injection port 53 on the left side shown in FIG. 5 is clogged in the circumferential direction by the laundry, the following the circumstances described. That is, spraying with a wide spread width is performed from the spray port 53 on the right side toward the vicinity of the first opening 54 of the rotary drum 4, and the laundry near the spray port 53 is quickly wetted and its volume is reduced. Thereby, the clogging near the jet port 53 on the left side caused by the laundry is resolved.

Moreover, the spraying effect of the washing water is further improved by combining the action of exchanging the laundry up and down in the forward and reverse continuous rotation drive mode and the action of exchanging the laundry left and right in the forward and reverse arc rotation drive mode. In addition, in this embodiment, the same effect can be exhibited even if it is the structure which reversed the injection port 53, 55 d of discharge ports, and the water inlet 51 left and right.

(Embodiment 5)

Fig. 9A is a rear view of the front wall of the front wall of the drum-type washing machine according to Embodiment 5 of the present invention viewed from the inside; Fig. 9B is an enlarged cross-sectional view when the water guide of the drum-type washing machine is cut along line L1-L1; Fig. 9C Figure 9D is an enlarged cross-sectional view when the water guide of the drum-type washing machine is cut on the line L2-L2, and Fig. 9D is an enlarged cross-sectional view when the water guide of the drum-type washing machine is cut on the line L3-L3. Moreover, FIG. 10 is a front view which shows the state in which the spray wash water of the front-loading-type washing machine in Embodiment 5 of this invention is sprayed. In Embodiment 5 of the present invention, the same reference numerals are assigned to the same components as in Embodiment 1, and description thereof will be omitted.

As shown in FIG. 9A, the water inlet 51 and the two discharge ports 55d arranged on the left and right sides of the rotating shaft 10 respectively pass through a water guide channel that expands in a substantially U-shape in a closed state in a substantially planar shape (making the unevenness difference between the front and rear as small as possible). 55b is connected. Here, in FIG. 9B , there is a cross-sectional portion near the water inlet 51 in the water guiding path 55 b on the left side of the front (the front here refers to the front view direction in FIG. 10 ). Moreover, as shown in FIG. 9C, it has the cross-sectional part of the rib 3f provided in the bulging part 3a of the water tank 3. As shown in FIG. And, as shown in FIG. 9D, at the position in front of the curved portion of the bulging portion 3a of the water tank 3, there is a cross-sectional portion in which the groove width of the bulging portion 3a is narrower than the groove width of the cross-sectional portion near the water inlet 51, and each cross-section The cross-sectional areas are S55b (L1), S55b (L2), and S55b (L3).

In the case of S55b(L1)>S55b(L2) and S55b(L1)>S55b(L3), the water flow pressure of the washing water generated from the water inlet 51 to the outlet 55d on the left side of the front has S55b(L1) The cross-sectional area of the cross-sectional portion hardly changes. However, the flow pressure of the wash water increases in the cross-section of the rib 3f and the cross-section where the groove width of the bulge 3a is narrower than the width of the cross-section near the water inlet 51 . From the water inlet 51 through the water guiding channel 55b on the left side of the front, the water pressure ratio of the water flow when spraying from the spray port 55d and the washing water sprayed from the spray port 53 is S55b (L1)=S55b(L2)=S55b(L3 ) when the water flow pressure is strong.

In such a front-loading-type washing machine according to Embodiment 5 of the present invention, the cross-sectional area of the water guide path 55b decreases as it approaches the discharge port 55d. Moreover, if it is a structure such as the cross-sectional area of S55b (L1)>S55b (L2)>S55b (L3)>S55d, the washing water sprayed from the spray port 53 through the spray port 55d on the left side of the front can be sprayed with a stronger pressure. Spray on the laundry. As shown in FIG. 10 , the spray flow shape A' is located in a slightly lower direction of the spray flow A, and sprays wash water at an angle slightly wider than that of the spray flow A. As shown in FIG. However, according to the above-mentioned structure, the washing water from the spray port 53 on the left side, as seen in the spray flow shape A, is directed upward from the spray flow shape A', and is slightly suppressed compared with the spray flow shape A'. Angled spray with straight-line spread width. That is, by changing the cross-sectional area in the channel of the water guide 55b, the water flow pressure, water flow velocity, and water flow rate of the water guide 55b can be freely changed. As a result, it is also possible to adjust the spray angle, spray width, and spread angle with respect to the rotating shaft 10 of the rotary drum 4 during the spraying of the wash water from the spray port.

In addition, in this embodiment, the same effect can be exhibited even if it is the structure which reversed the injection port 53, 55 d of discharge ports, and the water inlet 51 left and right.

Claims (5)

1. tumbling-box washing machine comprises:

Swing roller has formed round-ended cylinder shape;

Tank is provided with this swing roller to make the rotating shaft direction of above-mentioned swing roller be level or to be from the downward-sloping mode of horizontal direction towards the rear side that becomes the bottom from face side;

Motor is used to control above-mentioned rotary drum rotating;

Water circulation system utilizes circulating pump that the washings in the above-mentioned tank are circulated in above-mentioned swing roller via the peripheral passage that is connected with above-mentioned tank,

This drum type washing function is carried out at least 1 operation in the middle of washing procedure, the rinsing process by driving above-mentioned motor and above-mentioned circulating pump, it is characterized in that,

Above-mentioned water circulation system is provided with:

Water inlet is located at the periphery wall of above-mentioned tank, is connected with ejection side path from above-mentioned circulating pump;

The front bulkhead of above-mentioned tank is located on the water guide road, links with above-mentioned water inlet, and makes the washings shunting;

A plurality of ejiction openings are located at above-mentioned water guide road, are used to make washings to spray between the front bulkhead back side of above-mentioned tank and above-mentioned swing roller front bulkhead front;

A plurality of jets are used for the washings from a plurality of above-mentioned ejiction opening ejections are sprayed in above-mentioned swing roller,

A plurality of above-mentioned ejiction openings between the front bulkhead back side of above-mentioned tank and above-mentioned swing roller front bulkhead front at the circumferential scope inner opening of regulation, the front bulkhead back side of above-mentioned tank has and is used to make from the washings of a plurality of above-mentioned ejiction openings ejections guide surface towards the internal flow of above-mentioned swing roller, the back side from the washings of a plurality of above-mentioned ejiction openings ejections along the front bulkhead of above-mentioned tank and above-mentioned guide surface are flowed and be ejected above-mentioned water inlet from a plurality of above-mentioned jets, the opening direction of a plurality of above-mentioned ejiction openings and a plurality of above-mentioned jets is towards the pivot side of above-mentioned swing roller.

2. tumbling-box washing machine according to claim 1 is characterized in that,

In the plane vertical with the above-mentioned rotating shaft direction of above-mentioned swing roller, with the pivot that links above-mentioned swing roller and the line of above-mentioned water inlet is the 1st line, be provided with in the both sides of above-mentioned the 1st line and the different a plurality of above-mentioned ejiction opening of distance apart from above-mentioned water inlet, line with the near above-mentioned ejiction opening of the distance that links above-mentioned pivot and the above-mentioned water inlet of distance is the 2nd line, to link above-mentioned pivot and to be the 3rd line apart from the line of the above-mentioned ejiction opening of the distance of above-mentioned water inlet, above-mentioned the 1st line and above-mentioned the 2nd line angulation are littler than above-mentioned the 1st line and above-mentioned the 3rd line angulation.

3. tumbling-box washing machine according to claim 1 is characterized in that,

Make the long-pending ratio difference long-pending of opening section of a plurality of above-mentioned ejiction openings with respect to the opening section of above-mentioned water inlet.

4. tumbling-box washing machine according to claim 1 is characterized in that,

Above-mentioned water guide road has multiple sectional area.

5. tumbling-box washing machine according to claim 4 is characterized in that,

The sectional area on above-mentioned water guide road is along with reducing near above-mentioned ejiction opening.

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