Washing machine

Abstract

To provide a washing machine that allows a detergent to drop into the washing liquid between an inner tub and an outer tank, achieving improved detergency.SOLUTION: A washing machine S of the present invention includes an outer tank 2 in which washing liquid is reserved, an inner tub 3 rotatably installed in the outer tank 2, in which laundry is accommodated, and a detergent injection port 12 installed above the outer tank 2, through which a detergent is injected. The outer tank 2 includes a detergent injection path 2a protruding outward in the radial direction below the detergent injection port 12 through which the detergent falls.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a washing machine. [Background technology]

[0002] In a vertical washing machine in which the washing tub is placed vertically, a detergent case for dispensing detergent such as powder detergent or liquid detergent is disposed inside the rear part of the top cover. When a user wants to add detergent, he or she pulls the detergent case out of the top cover, adds the detergent, and then pushes the detergent case back into the top cover. Then, the detergent contained in the detergent case is supplied between the outer tub and the inner tub through the detergent inlet. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-34905 Summary of the Invention [Problem to be solved by the invention]

[0004] Detergent injected into the outer tub between the outer and inner tubs may enter the inner tub through the spin holes on its way to the bottom of the outer tub, potentially splashing directly onto the clothes inside. In this case, the detergent may not reach the bottom of the outer tub and dissolve in the wash water, resulting in a loss of cleaning power.

[0005] SUMMARY OF THE INVENTION The present invention has been made in consideration of the above circumstances, and has as its object to provide a washing machine in which detergent falls into the washing liquid between the inner and outer tubs, thereby improving detergency. [Means for solving the problem]

[0006] In order to solve the above problem, the washing machine of the present invention comprises an outer tub in which washing liquid is stored, an inner tub that is rotatably arranged within the outer tub and in which laundry is stored, and a detergent inlet that is arranged at the top of the outer tub and through which detergent is added, and the outer tub is provided with a detergent addition path that is formed by projecting radially outward at a portion below the detergent inlet through which the detergent falls. [Effects of the Invention]

[0007] According to the present invention, a washing machine can be provided in which detergent falls into the washing liquid between the inner tub and the outer tub, improving detergency. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is an external view of a washing machine according to an embodiment of the present invention; [Figure 2] 1 is a perspective view of a washing machine with the outer lid open and the detergent container pulled out. [Figure 3] FIG. 2 is a longitudinal cross-sectional view showing the main parts of the washing machine. [Figure 4] This is a perspective view of the outer tub, washing and spin tub, etc., viewed from diagonally above and behind the washing machine with the outer frame, top cover, and base removed. [Figure 5] Cross-sectional view II of Figure 4. [Figure 6] FIG. 2 is a view taken in the direction of the arrow II in FIG. 4. [Figure 7] Enlarged view of part III in Figure 6. [Figure 8] IV-IV cross-sectional view of Figure 7. [Figure 9] FIG. 8 is a perspective view of the vicinity of line IV-IV in FIG. 7 . DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an external view of a washing machine S according to this embodiment. In the following, a vertical washing machine S capable of washing, rinsing, and spin-drying will be described as an example.

[0010] 2 is a perspective view of the washing machine S with the outer lid 5 open and the detergent container 11 pulled out. FIG. The washing machine S of the present invention can also be effectively applied to a vertical washing machine that can also perform a drying process.

[0011] 1, the washing machine S of the embodiment has an outer shell formed by an outer frame 1 of a housing that forms the outer shape. The outer frame 1 is formed by fixing together several steel plates that have been formed by sheet metal molding. Although not shown in FIG. 3, the inside of the outer frame 1 is reinforced with a reinforcing member made of rust-proof steel plate. A synthetic resin base 32 is provided as a bottom plate at the bottom of the outer frame 1. The base 32 is reinforced by providing lattice-shaped ribs or the like inside to increase the moment of inertia.

[0012] In addition, a top cover 6 made of synthetic resin is provided above the outer frame 1. By making the base 32 and the top cover 6 out of insulating synthetic resin, leakage of electricity from the washing machine S and electric shock are suppressed.

[0013] As shown in Fig. 2, an outer lid 5 that can be opened and closed freely when a user puts laundry in or takes laundry out is provided on the upper part of the outer frame 1. The rear side of the outer lid 5 is pivotally supported by a top cover 6 provided on the upper part of the outer frame 1. Below the outer lid 5, an inner lid 5u (see Fig. 3) is provided around the rear axis so that it can be opened and closed freely when putting laundry in or taking laundry out.

[0014] The washing machine S shown in FIG. 3 includes an outer frame 1 of an outer tub 2 for storing washing water, a washing and spin-drying tub (inner tub) 3 in the outer tub 2, a rotating blade plate 4 that rotates at the bottom of the washing and spin-drying tub 3, and a drive motor 10 that rotates the rotating blade plate 4. Laundry can be put into or taken out of the washing / spin-drying tub 3 by opening and closing the outer lid 5 and the inner lid 5u through a laundry insertion opening 6a (see FIG. 2).

[0015] An operation panel 6p is provided on the upper front surface of the top cover 6 shown in Fig. 1 to enable a user to operate the washing machine S. The operation panel 6p is electrically connected to a control device e (see Fig. 3) provided at the lower front portion inside the washing machine S.

[0016] The outer tub 2 shown in FIG. 3 is made of synthetic resin, for example, glass fiber-reinforced PP (Polypropylene). The outer tub 2 is generally cylindrical with a bottom. The outer tub 2 is supported in the center of the outer frame 1 via a vibration-isolating device 2b that engages with a locking portion 2k of the outer tub 2. The vibration-isolating device 2b has a coil spring 2s formed from a spring wire with a predetermined spring constant, and elastic rubber 2g that damps vibrations through internal friction. The vibration-isolating device 2b supports the outer tub 2 by suspending it from the upper square corners of the outer frame 1, and suppresses vibration of the outer tub 2 and washing / spin-drying tub 3 through the consumption of elastic energy by the coil spring and damping by the elastic rubber.

[0017] Washing and spin-drying tub 3 has a generally cylindrical shape with a bottom and contains laundry (clothes) to be washed and spin-dried. Washing and spin-drying tub 3 is provided in the center of outer tub 2 and is supported so as to be freely rotatable within outer tub 2. The rotation axis O (see FIG. 3) of washing and spin-drying tub 3 is arranged in a generally vertical direction to prevent imbalance (bias) caused by gravity acting on the laundry when it rotates at high speed during spin-drying.

[0018] Washing and spin-drying tub 3 is formed in a generally cylindrical shape using titanium-containing stainless steel. The circumferential wall of washing and spin-drying tub 3 has numerous small through-holes 3a for water passage and spin-drying. Note that Fig. 1 shows only a portion of the numerous small through-holes 3a in a representative manner, with the rest omitted. The washing and spin-drying tub 3 also has a plurality of through-holes 3b in its bottom wall through which wash water and rinse water pass. The upper edge of the washing and spin-drying tub 3 is also equipped with a ring-shaped fluid balancer 3c. Fluid balancer 3c moves the internal fluid to the opposite side of the laundry imbalance during high-speed rotation in the spin-drying cycle. This suppresses excessive whirling vibrations, particularly during high-speed rotation at the natural frequency of the washing and spin-drying tub 3.

[0019] A rotary blade disc 4 is rotatably provided at the bottom of washing / spin-drying tub 3 for agitating the washing water and rinsing water to perform washing, rinsing, etc. Rotating blade disc 4 is rotatably installed at the center of the bottom of washing / spin-drying tub 3. Rotating blade disc 4 rotates repeatedly in forward and reverse directions during the washing and rinsing operations.

[0020] Drive motor 10 is provided within outer frame 1 and selectively drives rotary blade plate 4 and washing / spin-drying tub 3 to rotate via electromagnetic clutch 10c. Drive motor 10 is, for example, a DC brushless motor driven by direct current. The DC brushless motor is controlled by vector control using control device e. Drive motor 10 may directly drive rotary blade plate 4 and washing / spin-drying tub 3, or may indirectly drive them using a reduction mechanism such as a belt.

[0021] <Water supply> A water supply unit 7 that supplies wash water and rinse water is provided within the outer frame 1, behind the outer lid 5 of the top cover 6. The water supply unit 7 has a water supply box (not shown) with multiple water channels inside. The water supply unit 7 receives wash water and rinse water from a water supply hose connection port 8 that protrudes upward from the top cover 6. Specifically, tap water or bath water is supplied from the water supply hose connection port 8 and poured into the outer tub 2.

[0022] A detergent container 11 for detergent and finishing agent is provided on the rear side of the top cover 6 shown in FIGS. As shown in FIG. 2, when a user p adds detergent, he or she pulls out the detergent dispenser 11 from the top cover 6, adds the detergent, and then pushes the detergent dispenser 11 back into the top cover 6 (see FIG. 1). The detergent and finishing agent put into the detergent dispenser 11 are poured into between the outer tub 2 and the washing / spin-drying tub 3 from a detergent dispenser port 12 (see FIGS. 3 and 6) by means of a dispenser hose (not shown).

[0023] The rear bottom of the outer tub 2 is connected to a washing water drainage channel 52 for draining the washing water via a normally closed drain valve 53 that is opened only when draining the washing water. Drain valve 53 is closed during the washing operation and the rinsing operation. Drain valve 53 opens when draining the wash water, and discharges the wash water and rinsing water stored in outer tub 2 from wash water drain channel 52 to the outside of washing machine S (outside the machine). Washing machine S is equipped with water level sensor 55 that detects the water levels of wash water and rinse water collected in outer tub 2. An air trap 50 is provided near the bottom of outer tub 2. An air tube 56 is connected to and communicates with air trap 50, and a water level sensor 55 is connected to and communicates with the upper end of air tube 56.

[0024] <Wash water and rinse water circulation within washing and spin tub 3> Here, at the bottom of outer tub 2, circulation water channels 51a, 61a are provided for circulating wash water and rinse water inside washing / spin-drying tub 3 from the bottom to the top. Additionally, circulation water channels 51b and 61b are provided at the rear and front of washing and spin-drying tub 3, respectively, for circulating wash water and rinse water from the bottom to the top inside washing and spin-drying tub 3. Circulation water channels 51b and 61b are arranged symmetrically about the central axis of washing and spin-drying tub 3. This prevents imbalance when washing and spin-drying tub 3 rotates at high speed during the spin-drying process, and suppresses rotational vibrations at the natural frequency of washing and spin-drying tub 3.

[0025] Further, a lint filter 33 is disposed on the inner central side of the circulating water passage 51b at the front of the washing / spin-drying tub 3 to remove lint generated during washing and rinsing. Wash water and rinse water stored in outer tub 2 flows from circulation water channel 51a at the bottom of outer tub 2 into circulation water channel 51b at the rear of washing and spin-drying tub 3, and flows upward within circulation water channel 51b.

[0026] Similarly, the wash water and rinse water stored in outer tub 2 flows from circulation water channel 61a at the bottom of outer tub 2 into circulation water channel 61b at the front of washing and spin-drying tub 3, and flows upward within circulation water channel 61b. A portion of the wash water that rises up circulation water channel 51b at the rear of washing and spin-drying tub 3 has lint removed by lint filter 33 and enters washing and spin-drying tub 3. The other portion of the wash water that rises up circulation water channel 51b behind lint filter 33 is discharged from outlet 51c at the upper end of circulation water channel 51, hits fluid balancer 3c, and is sprayed like a shower near the center of washing and spin-drying tub 3.

[0027] Meanwhile, part of the wash water that has risen up circulation water channel 61b at the front of washing and spin-drying tub 3 is sprayed in a shower-like manner from slit-shaped, stepless shower outlet channel 15a1 of shower case 15 toward the center of washing and spin-drying tub 3. The other part of the wash water that has risen up circulation water channel 61b at the rear of washing and spin-drying tub 3 further rises up circulation water channel 61b, is discharged from outlet 61c at the upper end of circulation water channel 61b, collides with fluid balancer 3c, and is poured from above in a shower-like manner onto the laundry in washing and spin-drying tub 3.

[0028] <Washing operation> Next, the operation of the washing machine S according to the embodiment in a washing operation will be described. In the washing step, first, the water supply unit 7 supplies water to the dispenser 36 into which the detergent has been dispensed, thereby supplying the detergent, tap water, etc. into the outer tub 2. In the outer tub 2, the solid detergent is dissolved in tap water or the like, while the liquid detergent is diluted with tap water or the like to produce a highly concentrated detergent solution. At this time, if necessary, the drive motor 10 may rotate the rotor disk 4 to generate a water flow by the ridges 41 of the rotor disk 4, thereby producing a highly concentrated detergent solution.

[0029] When the drive motor 10 rotates the rotor disk 4 at the first water level, the high-concentration detergent solution accumulated at the bottom of the outer tub 2 flows out as follows. Specifically, the high-concentration detergent solution accumulated at the bottom of outer tub 2 flows upward from circulation water channel 51a at the rear bottom of outer tub 2 through circulation water channel 51b at the rear of washing and spin-drying tub 3, and is supplied into washing and spin-drying tub 3. Also, the high-concentration detergent solution accumulated at the bottom of outer tub 2 flows upward from circulation water channel 61a at the front bottom of outer tub 2 through washing and spin-drying tub 3 and front circulation water channel 61b, and is supplied into washing and spin-drying tub 3.

[0030] In this way, the highly concentrated detergent solution is circulated so that it drips onto the laundry from above (51c, 61c) and the center (15a1), while the rotor disk 4 is rotated alternately in forward and reverse directions, causing the ridge portion 41 to repeatedly apply an upward force to the laundry, thereby forcing it to wash (pre-wash). Thereafter, the water supply unit 7 supplies water until the water level reaches a second high level, which is higher than the first high level, and the drive motor 10 rotates the washing and spin-drying tub 3 and the rotary blade plate 4 alternately in forward and reverse directions, and washing is performed at the high water level (main wash).

[0031] As the rotary blade plate 4 shown in Figure 1 rotates, the detergent liquid, etc. that has accumulated near the outer diameter side of the bottom of the washing and spin-drying tub 3 and the detergent liquid, etc. that has been pushed outward by the first blade 46 are pushed further outward, and with that momentum, they pass through the circulating water channels 51b, 61b (see Figure 1) and come into contact with the circular fluid balancer 3c, forming a shower-like liquid toward the center, and the detergent liquid, etc. is supplied to the laundry in the washing and spin-drying tub 3.

[0032] FIG. 4 is a perspective view of the outer tub 2, washing and spin-drying tub 3, etc., viewed from diagonally above and behind the washing machine S with the outer frame 1, top cover 6, and base 32 removed. Fig. 5 is a cross-sectional view taken along line II in Fig. 4. Fig. 6 is a view taken in the direction of the arrow II in Fig. 4. As shown in FIGS. 4 and 6, in outer tub 2, which is generally cylindrical and has a bottom, washing and spin-drying tub 3, which is also generally cylindrical and has a bottom, is supported rotatably about a rotation axis O (see FIG. 3). Here, between outer tub 2 and washing / spin-drying tub 3, a gap (space) p1 (see FIG. 5) of a predetermined dimension is provided.

[0033] <Detergent injection path 2a for outer tub 2> A detergent feed path 2a, which projects outward from the outer tub 2 (diametrically outward) below the detergent feed port 12 of the outer tub 2 shown in Figures 4 and 6, extends in the axial direction of the outer tub 2 (the direction of the rotation axis O of the washing and spin-drying tub 3 (see Figure 3)) (see Figure 5). As shown in Figure 5, the detergent feed path 2a, which projects outward from the outer tub 2, extends downward from the detergent feed port 12 at the upper end of the outer tub 2 to a position below the small through-hole 3a of the spin-drying hole at the bottom of the washing and spin-drying tub 3. That is, the washing and spin-drying tub 3 has a large number (plurality) of small through-holes 3a in its peripheral side wall, and the detergent feed path 2a extends to a position below the lowest small through-hole 3a.

[0034] The gap (space) p2 between the washing / spin-drying tub 3 and the detergent dispensing path wall 2a1 of the detergent dispensing path 2a shown in Figure 5 is set larger than the gap (space) p1 between the outer tub 2 and the washing / spin-drying tub 3. For example, p2 = 20 mm and p1 = 10 mm. Note that the dimensions of p1 and p2 can be selected arbitrarily as long as there is a size relationship of p2 > p1 and the detergent falls smoothly into the washing liquid between the outer tub 2 and the washing / spin-drying tub 3. The detergent feeding path 2a is formed with a slope such that the lower part 2a2 of the feeding path below the dehydration hole (small through hole 3a) at the bottom of the washing and spin-drying tub 3 approaches the washing and spin-drying tub 3 to the extent that it does not hinder the detergent from falling.

[0035] FIG. 7 is an enlarged view of part III in FIG. 8 is a cross-sectional view taken along line IV-IV in FIG. 7, and FIG. 9 is a perspective view of the vicinity of line IV-IV in FIG.

[0036] Below the detergent inlet 12 shown in Figure 7, a detergent guide plate 14 is provided contiguous with the detergent inlet wall 12a, sloping downward from the washing and spin-drying tub 3 side to the detergent inlet path wall 2a1 (see Figure 8) side of the detergent inlet path 2a. The detergent guide plate 14 is a component that guides the detergent entering the detergent inlet 12 toward the detergent entry path wall 2a1 so as not to enter the washing and spin-drying tub 3.

[0037] The detergent guide plate 14 shown in FIGS. 8 and 9 has a first detergent guide plate 14a and a second detergent guide plate 14b. As shown in FIG. 9, the second detergent guide plate 14b on the outer tub 2 side is formed with a greater downward inclination than the first detergent guide plate 14a on the washing / spinning tub 3 side. A detergent drop space sp into which the detergent drops is provided between the second detergent guide plate 14b on the outer tub 2 side and the detergent inlet wall 12a shown in FIG.

[0038] <Detergent guide rib 13> In the detergent drop space sp, three plate-shaped detergent guide ribs 13 (see FIG. 8) for guiding the detergent are formed in the approximately radial direction of the bottomed, approximately cylindrical outer tub 2, connecting the second detergent guide plate 14b and the detergent inlet wall 12a. With this configuration, the detergent falls along the detergent guide ribs 13 due to the friction between the detergent guide ribs 13 and the detergent and the viscosity of the detergent, and is guided further toward the detergent drop path 2a of the outer tub 2. In this way, the detergent can fall downward along the detergent guide ribs 13 within the detergent drop path 2a, as shown by arrow α11 in FIGS. 8 and 9. Since the detergent guide ribs 13 are plate-shaped, a large space for the detergent to fall between the detergent guide ribs 13 can be secured, and the area for guiding the detergent by the detergent guide ribs 13 can be secured large.

[0039] The detergent guide ribs 13 are formed using, for example, PP (Polypropylene), which has high strength, good processability, and excellent waterproof and chemical resistance. The material of the detergent guide ribs 13 can be selected arbitrarily as long as it satisfies the required functions and lifespan.

[0040] The three detergent guide ribs 13 shown in FIG. 7 extend in the radial direction of the outer tub 2 and are formed in substantially the same shape (see FIG. 9). The detergent guide rib 13 shown in FIGS. 8 and 9 has a detergent receiving sloped portion 13a, an upwardly extending rib region 13b having the detergent receiving sloped portion 13a as its upper surface, and a downwardly extending rib region 13c. 8 has an inclined surface 13a1 that is positioned downward as it approaches the outer tub 2, and a curved surface 13a2 that is connected outward to the inclined surface 13a1 and has a concave curvature downward. The inclined surface 13a1 of the detergent receiving sloped portion 13a can guide the detergent further toward the outer tub 2. The concave curved surface 13a2 of the detergent receiving sloped portion 13a can receive a large amount of detergent and allow the detergent to fall along the detergent guide ribs 13.

[0041] In this way, the detergent receiving slope 13a receives the detergent dispensed into the detergent dispense opening 12 (see FIGS. 3 and 9) and allows the detergent to flow down the upwardly extending rib area 13b. The detergent flows down the upwardly extending rib area 13b shown in FIGS. 8 and 9 to the downwardly extending rib area 13c, and then falls downward within the detergent dispense path 2a (see arrow α11 in FIGS. 3 and 9). Guide rib lower surfaces 13u (see FIG. 8) that form the lower surfaces of the upwardly extending rib regions 13b and the downwardly extending rib regions 13c have an upwardly concave curvature. In this way, the guide rib lower surface 13u of the detergent guide rib 13 is formed to extend further downward on the detergent feeding path wall 2a1 side than the first detergent guide plate 14a, so that the detergent can be separated further from the washing and spin-drying tub 3 and allowed to fall downward within the detergent feeding path 2a (see arrow α11 in Figure 8).

[0042] Furthermore, when washing and spin-drying tub 3 starts rotating during spin-drying operation or when rotating at its natural frequency during high-speed operation, washing and spin-drying tub 3 makes large contact with and rotates around, resulting in a large amplitude. However, since guide rib lower surface 13u of detergent guide rib 13 (see FIG. 8) has an upwardly concave curvature, washing and spin-drying tub 3 can be prevented from contacting detergent guide rib 13. Here, if the spacing s1 between the detergent guide ribs 13 shown in Fig. 7 is set to 2 mm, clumps of detergent may get caught on the detergent guide ribs 13. Therefore, it is considered that the spacing between the detergent guide ribs 13 needs to be approximately 3 mm or more in order for the detergent to fall smoothly without getting caught on the detergent guide ribs 13. Therefore, the spacing between the detergent guide ribs 13 is set to approximately 3 mm to approximately 5 mm, and the number of detergent guide ribs 13 is set to three.

[0043] The number of detergent guide ribs 13 is not limited by the size of the detergent inlet 12 and can be selected arbitrarily. Here, the greater the number of detergent guide ribs 13, the greater the amount of detergent that can be guided by the detergent guide ribs 13. For example, three detergent guide ribs can guide a greater amount of detergent than two detergent guide ribs 13.

[0044] <Action and effect> According to the washing machine S of this embodiment, a detergent injection path 2a (see FIG. 8) is provided by projecting the outer tub 2 below the detergent inlet 12 toward the outer periphery, so that the detergent falls down along the detergent injection path 2a provided on the inner wall surface of the outer tub 2. As a result, the detergent does not enter the washing and spin-drying tub 3 through the small through-holes 3a (see FIG. 5), but falls downward within the detergent injection path 2a (arrow α11 in FIGS. 8 and 9) and is mixed with the washing liquid. Therefore, the detergent is prevented from entering the washing and spin-drying tub 3 through the small through-holes 3a (see FIG. 5) and coming into contact with the clothes directly. Therefore, the detergent falls into the washing liquid at the bottom of the outer tub and is agitated by the rotary blade disc 4. This allows the detergent to be thoroughly stirred and dissolved in the washing liquid, thereby improving the washing power of the washing machine S.

[0045] Furthermore, as shown in Figure 5, the detergent feeding path 2a is provided below the small through-holes 3a of the spin-drying holes at the bottom of the washing and spin-drying tub 3, thereby reliably preventing detergent from passing through the small through-holes 3a of the spin-drying holes and entering the washing and spin-drying tub 3. Specifically, during the detergent descending process (arrow α11 in Figures 8 and 9), detergent enters the washing and spin-drying tub 3 through the small through-holes 3a (see Figures 3 and 8) of the spin-drying holes of the washing and spin-drying tub 3, more reliably reducing the risk of detergent getting on clothes.

[0046] 7 and 8, a detergent guide rib 13 is provided below the detergent inlet 12 through which the detergent is poured into the outer tub 2. The detergent guide rib 13 allows the detergent to flow along the detergent guide rib 13 and fall along the detergent pouring path wall 2a1 (see FIG. 8) that forms the inner wall surface of the outer tub 2. The above configuration allows the detergent to reliably drop into the washing liquid at the bottom between the outer tub 2 and the washing and spin-drying tub 3 without coming into direct contact with the clothes in the washing and spin-drying tub 3 (see arrow α11 in Figure 3).

[0047] <<Other embodiments>> 1. The present invention is not limited to the above-described embodiment and modified configurations, and various modifications and specific forms are possible within the scope of the appended claims. [Explanation of symbols]

[0048] 2 Outer tank 2a Detergent injection route 3 Washing and spin tub (inner tub) 3a Dehydration hole (small through hole) 4 rotor blades 12 Detergent dispenser 13 Detergent guide rib (detergent dispenser) 13a1 Slope 13a2 curved surface S washing machine s1 Spacing (spacing between detergent dispensers)

Claims

1. an outer tub in which the washing liquid is stored; an inner tub that is rotatably provided in the outer tub and that accommodates laundry; a detergent inlet provided at an upper portion of the outer tub, into which a detergent is poured; The outer tub is provided with a detergent introduction path that is formed by projecting radially outward from the detergent introduction port, through which the detergent falls. A washing machine characterized by:

2. The washing machine according to claim 1, The inner tank has a plurality of dewatering holes formed in the peripheral wall, The detergent feeding path is provided to a position below the dewatering hole at the bottom of the inner tub. A washing machine characterized by:

3. an outer tub formed in a cylindrical shape with a bottom and configured to store washing liquid; an inner tub that is rotatably provided in the outer tub and that accommodates laundry; a detergent inlet provided at an upper portion of the outer tub, into which a detergent is poured; A detergent dispenser is provided below the detergent dispenser opening, extending in a substantially radial direction of the outer tub, and guiding the detergent so that it falls between the outer tub and the inner tub. A washing machine characterized by:

4. The washing machine according to claim 1, A detergent dispenser is provided below the detergent dispenser opening, extending in a substantially radial direction of the outer tub, and guiding the detergent so that it falls between the outer tub and the inner tub. A washing machine characterized by:

5. The washing machine according to claim 3 or 4, The detergent dispenser is plate-shaped. A washing machine characterized by:

6. The washing machine according to claim 3 or 4, The detergent dispenser is formed so that the outer side is longer and lower than the center side of the outer tub. A washing machine characterized by:

7. The washing machine according to claim 3 or 4, The upper surface of the detergent dispenser has an inclined surface that is positioned downward as it approaches the outer tub, and a curved surface that is connected to the inclined surface outward and has a concave curvature downward. A washing machine characterized by:

8. The washing machine according to claim 3 or 4, The detergent dispenser is provided in plurality. A washing machine characterized by:

9. The washing machine according to claim 8, The spacing between the detergent dispensers is greater than 2 mm. A washing machine characterized by:

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