Drum type washing machine

Abstract

To provide a drum type washing machine capable of simplifying the structure of a washing water circulation part.SOLUTION: A drum type washing machine includes: a housing having a housing opening part opened on the front surface; a water tub having a water tub opening part opened on the front surface, and elastically supported in the housing; a rotary drum arranged inside the water tub, and rotationally driven; a door capable of opening / closing the housing opening part; a packing for connecting between the housing opening part and the water tub opening part; and a washing water circulation part for circulating the washing water stored in the washing tub. The washing water circulation part includes: a circulation path; a circulation pump; and a washing water supply part for mixing the air into the washing water in the circulation path, and supplying it in an internal space of the rotary drum. The washing water supply part includes a mixing part for mixing the air into the washing water, and an inflow port and an outflow port each connected to the mixing part, and at least part of the washing water supply part is provided at the packing.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a drum-type washing machine. [Background technology]

[0002] For example, Patent Document 1 discloses a drum-type washing machine that includes a housing, a water tub, a rotating drum, a circulation path for circulating the wash water in the water tub, and a foam generating unit that mixes air with the wash water that has passed through the circulation path to generate detergent foam.

[0003] In the drum-type washing machine described in Patent Document 1, the foam generating unit is provided on a cover member arranged in front of the water tub. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2023-033699 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the drum-type washing machine of Patent Document 1, the foam generation unit is located in the water tub, which means that vibrations from the rotating drum are easily transmitted to the foam generation unit, and components such as bellows and elbows are required to suppress the transmission of vibrations, which makes the structure of the wash water circulation unit, including the foam generation unit and circulation path, prone to becoming complicated.

[0006] Therefore, an object of the present disclosure is to solve the above-mentioned problems and to provide a drum-type washing machine that can simplify the structure of the wash water circulation unit. [Means for solving the problem]

[0007] A drum-type washing machine according to one embodiment of the present disclosure comprises a housing having a housing opening that opens at the front, a water tub having a water tub opening that opens at the front and that is elastically supported within the housing, a rotating drum that is disposed inside the water tub and is driven to rotate, a door that can open and close the housing opening, a gasket that connects the housing opening and the water tub opening, and a wash water circulation unit that circulates wash water stored in the water tub, wherein the wash water circulation unit comprises a circulation path, a circulation pump, and a wash water supply unit that mixes air into the wash water in the circulation path and supplies the water to the internal space of the rotating drum, and the wash water supply unit has a mixing unit that mixes air into the wash water, and an inlet and an outlet that are respectively connected to the mixing unit, and at least a portion of the wash water supply unit is provided in the gasket. [Effects of the Invention]

[0008] According to the present disclosure, the structure of the wash water circulation unit can be simplified. [Brief explanation of the drawings]

[0009] [Figure 1] Schematic cross-sectional view of a drum-type washing machine according to an embodiment. [Figure 2] FIG. 1 is a perspective view showing a configuration of a washing water supply unit and its surroundings according to an embodiment; [Figure 3] FIG. 1 is a perspective view showing a configuration of a washing water supply unit and its surroundings according to an embodiment; [Figure 4] Cross section II in Figure 2 [Figure 5] Cross section II-II in Figure 2 [Figure 6] III-III cross section in Figure 2

[0010] (Embodiment) A drum-type washing machine according to an embodiment of the present disclosure will be described.

[0011] 1 is a schematic cross-sectional view of a drum type washing machine 100 according to an embodiment of the present disclosure. As shown in FIG. 1, the drum type washing machine 100 includes a housing 101, a water tub 102, and a rotating drum 103.

[0012] Water tub 102 is disposed within housing 101 and is supported in a vibration-isolating manner by vibration dampers (not shown). Rotating drum 103 is contained within water tub 102 and is rotatable by motor 112. A plurality of water passage holes 103b are formed on the circumferential surface of rotating drum 103. Water passage holes 103b connect water tub 102 and rotating drum 103 to allow water to pass through. Water tub 102 and rotating drum 103 are formed in a cylindrical shape with a bottom. A drum opening 103a is provided on the front side of rotating drum 103 for loading and unloading clothes, and similarly, a water tub opening 102a is provided on the front side of water tub 102.

[0013] Housing 101 has housing opening 101a on the front surface thereof so as to face water tub opening 102a and drum opening 103a. Door 105, which can be opened and closed to cover housing opening 101a, is provided on the front surface of housing 101. A user opens door 105 and loads laundry into rotating drum 103 through housing opening 101a, water tub opening 102a, and drum opening 103a.

[0014] A packing 115 is provided at the front interior portion of the housing 101. The packing 115 is a member that provides a watertight seal between the housing opening 101a and the water tank opening 102a. A first end of the packing 115 is connected to the housing opening 101a, and a second end is connected to the water tank opening 102a.

[0015] A water supply unit 120 is provided in an upper interior portion of the housing 101. The water supply unit 120 includes a water supply valve 121, a water supply path 122, and a detergent case 125.

[0016] Water supply valve 121 is provided so as to be able to be opened and closed freely. Water supply path 122 connects water supply valve 121 and water tub 102. Detergent case 125 is provided midway along water supply path 122. When water supply valve 121 is opened, wash water introduced into housing 101 passes through water supply path 122 and is poured into water tub 102 while dissolving the detergent contained in detergent case 125.

[0017] A drainage section 130 is provided in the lower inner portion of the housing 101. The drainage section 130 includes a drainage path 131 and a drainage valve 132.

[0018] Drain path 131 is a path that connects the bottom of water tub 102 to the outside of drum type washing machine 100. Drain valve 132 is a valve that can be opened and closed and is provided midway along drain path 131. When drain valve 132 is opened, the wash water in water tub 102 is drained to the outside of drum type washing machine 100.

[0019] Inside housing 101, there is provided a washing water circulation unit 140 that circulates the washing water in water tub 102. Washing water circulation unit 140 includes a circulation path 141, a circulation pump 142, and a washing water supply unit 200, which will be described later.

[0020] Circulation path 141 branches off from drain path 131 at a location upstream of drain valve 132 and is connected to wash water supply unit 200. Circulation pump 142 is a pump provided midway along circulation path 141, and is driven by a pump motor (not shown) to send the wash water flowing into circulation path 141 to wash water supply unit 200.

[0021] The wash water supply unit 200 generates foamy wash water by mixing air with the wash water sent from the circulation path 141, and discharges the foamy wash water into the internal space of the rotary drum 103. This improves the washing effect of the clothes. The wash water supply unit 200 may also be called a "foam generating unit."

[0022] Drainage path 131 is provided with drainage filter 135 upstream of the point where drainage path 131 branches off from circulation path 141. Drainage filter 135 filters out foreign matter such as lint contained in the wash water that flows from water tub 102 into drainage path 131.

[0023] Control means 180 is provided at the lower interior portion of housing 101. Control means 180 controls components of drum-type washing machine 100, such as motor 112, water supply valve 121, drain valve 132, and circulation pump 142, to control the washing operation, including the washing stroke, rinsing stroke, and spin-drying stroke. Control means 180 controls the operation of the pump motor of circulation pump 142, thereby enabling circulation pump 142 to send wash water to circulation path 141. If the rotation speed N of the pump motor of circulation pump 142 is variable, control means 180 can change the flow rate of wash water sent by circulation pump 142 to circulation path 141 by controlling the rotation speed N of the pump motor. When the rotation speed N of the pump motor is high, wash water is sent from circulation pump 142 at a high flow rate, and when the rotation speed N of the pump motor is low, wash water is sent from circulation pump 142 at a low flow rate.

[0024] An operation display unit 185 is provided on the upper front surface of the housing 101. The operation display unit 185 receives instructions from the user regarding the washing operation. The operation display unit 185 displays information regarding the operation status and the like.

[0025] In this embodiment, the wash water supply unit 200 is provided in the packing 115. This allows foamy wash water to be generated with a simple configuration, and simplifies the structure of the wash water circulating unit 140. The peripheral configuration of the wash water supply unit 200 will be described below with reference to Figure 2 and subsequent drawings.

[0026] 2 and 3 are perspective views showing the peripheral configuration of the wash water supply unit 200. In Fig. 3, the packing 115 and the circulation path 141 are omitted. Fig. 4 is a cross-sectional view taken along line II in Fig. 2, Fig. 5 is a perspective view showing the cross-section taken along line II-II in Fig. 2, and Fig. 6 is a perspective view showing the cross-section taken along line III-III in Fig. 2.

[0027] As shown in FIGS. 2 and 3, the wash water supply unit 200 includes a first pipe unit 202, a second pipe unit 204, and a mixer unit 206 (FIG. 3).

[0028] First pipe section 202 is a pipe section for connecting circulation path 141 to wash water supply section 200, and is connected to end section 150 of circulation path 141. As shown in FIG. 3 , first pipe section 202 has inlet 210 for allowing wash water to flow in from circulation path 141. First pipe section 202 having inlet 210 constitutes the “inlet section” of wash water supply section 200.

[0029] The end of the first pipe section 202 opposite to the inlet 210 is connected to a connection hose 302 of a packing washer 300. The packing washer 300 will be described later.

[0030] The second pipe section 204 is a pipe section that branches off from the middle of the first pipe section 202, and connects the first pipe section 202 and the mixing section 206. The second pipe section 204 passes a portion of the wash water flowing through the first pipe section 202 to the mixing section 206.

[0031] By connecting the second pipe section 204 to the first pipe section 202, part of the washing water flowing through the first pipe section 202 flows into the second pipe section 204, and the remaining washing water flows into the gasket washing section 300.

[0032] 3 is a section that mixes air with the wash water flowing from the second pipe section 204 to generate foamy wash water. An outlet 212 is formed at the end of the mixer 206, and the foamy wash water generated in the mixer 206 is discharged to the outside (see arrow W1).

[0033] The mixer 206 of this embodiment is a box-shaped member that incorporates a flow path for flowing wash water, and may also be called a "mixing box."

[0034] The box-shaped mixing section 206 is inserted into the insertion section 152 of the packing 115 shown in Fig. 2. The insertion section 152 is a cylindrical receptacle for receiving the mixing section 206 of the wash water supply section 200. In the example shown in Fig. 2, the insertion section 152 is a part of the annular packing 115 that protrudes radially outward, and is integral with the packing 115.

[0035] A fixing member 208 is disposed on the outer periphery of the insertion portion 152. The fixing member 208 tightens the insertion portion 152 containing the mixing portion 206 from the outside, thereby connecting and fixing the wash water supply portion 200 including the mixing portion 206 to the packing 115.

[0036] Packing 115 further includes guide portion 154. Guide portion 154 is a portion for guiding foamy washing water flowing out from outlet 212 of wash water supply portion 200 in a desired direction toward internal space S1 of rotating drum 103. Guide portion 154 contacts with the washing water flowing out from outlet 212, thereby guiding the washing water in the desired direction (see arrow W2). In the example shown in FIG. 2, guide portion 154 is a portion of annularly extending packing 115 that protrudes radially inward, and is integral with packing 115.

[0037] A communication port 155 is formed in the guide portion 154. The communication port 155 is an opening that communicates with the internal space S1 of the rotary drum 103, and functions as a discharge port for discharging the wash water.

[0038] The packing 115 further includes a first mounting portion 156 , a second mounting portion 158 , and a bellows portion 160 .

[0039] The first mounting portion 156 is a portion that is attached to the water tank opening 102a of the water tank 102, and the second mounting portion 158 is a portion that is attached to the housing opening 101a of the housing 101. As shown in Fig. 4, the first mounting portion 156 is attached to the end 102b that defines the water tank opening 102a of the water tank 102, and the second mounting portion 158 is attached to the end 101b that defines the housing opening 101a of the housing 101.

[0040] Bellows portion 160 is a bellows-shaped portion provided between first mounting portion 156 and second mounting portion 158. By providing bellows portion 160, vibrations of rotating drum 103 and water tub 102 that occur when drum-type washing machine 100 is in operation are prevented from being transmitted to housing 101.

[0041] 4, the side of bellows portion 160 on which first mounting portion 156 is arranged is referred to as the "vibrating side P1," and the side on which second mounting portion 158 is arranged is referred to as the "fixed side P2." By providing bellows portion 160, vibrations generated on vibrating side P1 are prevented from being transmitted to fixed side P2.

[0042] Insertion portion 152 that receives mixer 206 is provided between bellows portion 160 and second attachment portion 158, i.e., on fixed side P2. By providing insertion portion 152 on fixed side P2 and connecting wash water supply portion 200 including mixer 206 to fixed side P2 of packing 115, vibrations on vibration side P1 are less likely to be transmitted to wash water circulation portion 140 including wash water supply portion 200 and circulation path 141. This eliminates the need for components such as bellows portions and elbows to suppress transmission of vibrations in wash water circulation portion 140, thereby simplifying the structure of wash water circulation portion 140.

[0043] As shown by arrow A in FIG. 4, when box-shaped mixing section 206 is inserted into insertion section 152 of packing 115 , it is received by reduced diameter section 162 provided inside packing 115 .

[0044] The reduced diameter section 162 is a portion that reduces the diameter so as to reduce the flow path cross-sectional area of ​​the insertion section 152, and is provided at the lower end of the insertion section 152. The reduced diameter section 162 abuts against the end of the mixing section 206, and positions the mixing section 206 inserted into the insertion section 152 at a predetermined position. In the example shown in Fig. 4, the reduced diameter section 162 is a step that reduces the flow path cross-sectional area of ​​the insertion section 152 in a step-like manner.

[0045] The foamy wash water flowing out from outlet 212 of mixer 206 is collected by reduced diameter section 162 and discharged together from communication port 155. This allows for a good-looking shower discharge.

[0046] In the above configuration, wall surface 163 of water tub 102 shown in Fig. 3 is covered with packing 115, and dirt is likely to adhere to wall surface 163 as the drum-type washing machine 100 is used. As a configuration for cleaning dirt adhering to wall surface 163, packing cleaning section 300 is provided.

[0047] The packing cleaning unit 300 includes a connection hose 302, a connection unit 304, and a discharge unit 306 (FIG. 3).

[0048] Connection hose 302 is a hose connected to first pipe portion 202, and connects first pipe portion 202 and connecting portion 304. Connecting portion 304 is a cylindrical portion connected to connection hose 302, and communicates with discharge portion 306 shown in FIG. 3 as part of the wall surface that constitutes water tub 102. Discharge portion 306 is an opening through which wash water is discharged from connecting portion 304, and is provided so as to be exposed from wall surface 163 of housing 101, and faces gasket 115.

[0049] By discharging the washing water from discharge portion 306, the inner wall surface of packing 115 and wall surface 163 of housing 101 facing thereto can be cleaned.

[0050] Next, the detailed configuration of the mixer 206 of the wash water supply unit 200 will be described with reference to FIGS.

[0051] As shown in FIGS. 5 and 6, the mixing section 206 has a first flow path 214 and a second flow path 216 as internal flow paths.

[0052] First flow path 214 is a space through which the wash water flowing from second pipe section 204 flows toward outlet 212 (see arrow W3). First flow path 214 is connected to second pipe section 204 on the upstream side and to outlet 212 on the downstream side. First flow path 214 is arranged to extend vertically, and causes the wash water to flow downward toward outlet 212 by gravity. As shown in FIG. 5, first flow path 214 is defined by side wall sections 217 and 218 of mixer section 206.

[0053] The second flow path 216 is a flow path provided at a position adjacent to the first flow path 214 via a side wall portion 218, and is provided to supply air to the first flow path 214. The second flow path 216 is defined by the side wall portion 218 of the mixing section 206 and the side wall portion 164 of the insertion section 152. A through hole 219 is formed in the side wall portion 218, and the second flow path 216 communicates with the first flow path 214 via the through hole 219. The lower end of the second flow path 216 is open, and communicates with the internal space S1 of the rotating drum 103 via a communication port 155.

[0054] As the wash water flows in first flow path 214 toward outlet 212, negative pressure is generated around through-hole 219, and air flows from second flow path 216 into first flow path 214 via through-hole 219 due to the so-called Venturi effect (see arrows B1 and B2). As a result, the air is mixed with the wash water flowing in first flow path 214, and foamy wash water is generated. The generated foamy wash water is collected by reduced diameter portion 162 at outlet 212, flows out, and is supplied to internal space S1 of rotating drum 103 via communication port 155 (see arrow W4).

[0055] Mixing section 206 further has protruding section 220 that protrudes second pipe section 204 inward. Providing protruding section 220 ensures that a space around protruding section 220 is not filled with washing water when washing water flows through first flow path 214. This makes it possible to more reliably cause air to flow from second flow path 216 to first flow path 214 via through-hole 219.

[0056] The mixing section 206 further has a side wall section 222 that is separate from the side wall section 218. The side wall section 222 is a portion that extends outward relative to the side wall section 218, and extends outward from the side wall section 218 at a position above the through-hole 219. The side wall section 222, together with the side wall section 164 and the side wall section 218, defines the second flow path 216.

[0057] The side wall portion 222 extends outward from the side wall portion 218 and then bends upward so as to fit along the side wall portion 164 of the insertion portion 152. The fixing member 208 described above is provided on the outside of the portion where the side wall portion 222 and the side wall portion 164 meet.

[0058] By providing such a side wall portion 222, the second flow path 216 can be defined together with the side wall portions 164, 218, and can also be used as a fixing point for fixing the mixing portion 206.

[0059] (summary) As described above, by providing wash water supply unit 200, which generates and supplies foamy wash water, connected to packing 115, foamy wash water can be generated with a simple configuration and introduced into water tub 102. Furthermore, by connecting wash water supply unit 200 to fixed side P2 shown in Fig. 4, vibrations from vibration side P1 are less likely to be transmitted to wash water circulation unit 140, which includes wash water supply unit 200 and circulation path 141. This makes it possible to omit bellows sections, elbows, etc. for suppressing vibrations, thereby simplifying the structure of wash water circulation unit 140.

[0060] In mixer 206, second flow path 216 is provided adjacent to first flow path 214, separated by sidewall 218, and communicates with each other via through-hole 219. As a result, when wash water flows through first flow path 214, air in second flow path 216 is mixed with the wash water to produce foamy wash water. Furthermore, second flow path 216 for supplying air communicates with internal space S1 via communication port 155, and can draw air from internal space S1. Therefore, compared to drawing air from the external space of water tub 102 (the internal space of housing 101), foamy wash water can be produced while suppressing water leakage outside gasket 115.

[0061] [effect] The drum type washing machine 100 according to the embodiment can provide the following effects.

[0062] As described above, drum type washing machine 100 of this embodiment includes housing 101 having housing opening 101a opening at the front, water tub 102 having water tub opening 102a opening at the front and elastically supported within housing 101, rotating drum 103 arranged inside water tub 102 and driven to rotate, door 105 that can open and close housing opening 101a, packing 115 that connects housing opening 101a and water tub opening 102a, and a washing machine that circulates wash water stored in water tub 102. The washing machine includes a water circulation unit 140, which includes a circulation path 141, a circulation pump 142, and a washing water supply unit 200 that mixes air into the washing water in the circulation path 141 and supplies the mixed water to the internal space S1 of the rotating drum 103. The washing water supply unit 200 has a mixing unit 206 that mixes air into the washing water, and an inlet 210 and an outlet 212 that are connected to the mixing unit 206, and at least a part of the washing water supply unit 200 (for example, the mixing unit 206) is provided in the packing 115.

[0063] According to this configuration, by providing the wash water supply unit 200 in the packing 115, foamy wash water can be generated with a simple configuration, and the structure of the wash water circulation unit 140 can be simplified.

[0064] Furthermore, in drum type washing machine 100 of the present embodiment, packing 115 has first attachment portion 156 attached to water tub opening 102a, second attachment portion 158 attached to housing opening 101a, and bellows portion 160 located between first attachment portion 156 and second attachment portion 158, and at least a part of wash water supply unit 200 (e.g., mixing portion 206) is provided between bellows portion 160 and second attachment portion 158. With this configuration, by providing wash water supply unit 200 on fixed side P2 rather than on vibration side P1, vibration is less likely to be transmitted to wash water circulation unit 140, and the structure of wash water circulation unit 140 can be simplified.

[0065] In the drum type washing machine 100 of the present embodiment, at least a part of the wash water supply section 200 provided in the packing 115 includes the mixer section 206. With this configuration, by providing the mixer section 206, which has a large volume in the wash water supply section 200, in the packing 115, the wash water supply section 200 can be provided stably.

[0066] In addition, in the drum type washing machine 100 of this embodiment, the packing 115 has an insertion portion 152 into which at least a part of the wash water supply portion 200 (e.g., the mixing portion 206) is inserted, and a communication port 155 that connects the insertion portion 152 to the internal space S1 of the rotating drum 103. With this configuration, by inserting the wash water supply portion 200 into the insertion portion 152 of the packing 115, the wash water supply portion 200 can be provided in the packing 115 with a simple configuration.

[0067] In addition, in drum type washing machine 100 of this embodiment, at least a part of wash water supply section 200 provided in packing 115 includes mixer section 206, and mixer section 206 has first flow path 214 through which wash water flows from inlet 210 and side wall section 218 (wall section) defining first flow path 214, with through hole 219 formed in side wall section 218, and second flow path 216 communicating with first flow path 214 through through hole 219 provided between side wall section 218 and insertion section 152 of packing 115. With this configuration, by passing wash water through first flow path 214, air can be caused to flow from second flow path 216 into first flow path 214 by the Venturi effect and mixed with the wash water.

[0068] In the drum type washing machine 100 of this embodiment, the second flow path 216 communicates with the internal space S1 of the rotating drum 103 through the communication port 155. With this configuration, the second flow path 216 can suck air through the communication port 155, and therefore, even though the wash water supply unit 200 is provided in the packing 115, water leakage to the outside of the packing 115 can be suppressed.

[0069] Furthermore, in the drum type washing machine 100 of this embodiment, the mixing section 206 further has a side wall 222 (another wall) that protrudes outward from the side wall 218 (wall) and contacts the insertion section 152, and is further provided with a fixing member 208 that fixes from the outside the portion of the insertion section 152 that contacts the side wall 222. With this configuration, the wash water supply section 200 can be fixed to the insertion section 152 by using the side wall 222.

[0070] In the drum-type washing machine 100 of this embodiment, the packing 115 has a guide portion 154 that guides the wash water discharged from the communication port 155 into the internal space S1 of the rotating drum 103. With this configuration, the foamy wash water can be discharged in a desired direction, and providing the guide portion 154 in the packing 115 adds a fluid guide function without increasing the number of parts.

[0071] Furthermore, in the drum type washing machine 100 of this embodiment, the insertion part 152 has a reduced diameter part 162 that reduces in diameter to receive the wash water supply part 200 in the insertion direction and faces the outlet 212. With this configuration, the wash water supply part 200 inserted into the insertion part 152 can be easily positioned, and the foamy wash water can be collected by the reduced diameter part 162, making it easier to create a good-looking shower.

[0072] Furthermore, in the drum type washing machine 100 of this embodiment, the wash water supply section 200 has a second pipe section 204 (pipe section) that connects the inlet 210 and the mixer section 206, and the mixer section 206 has a protruding section 220 that protrudes the second pipe section 204 into the internal space S1 of the mixer section 206. With this configuration, a space that is not filled with liquid is secured around the protruding section 220, and the inflow of air from the through-hole 219 can be secured.

[0073] In drum type washing machine 100 of the present embodiment, wash water supply section 200 has second pipe section 204 (pipe section) connecting inlet 210 and mixer section 206, and first pipe section 202 (another pipe section) connecting inlet 210 and wall surface 163 of water tub 102 covered with packing 115. With this configuration, washing water can be passed through the space between water tub 102 and packing 115 to perform washing.

[0074] The present disclosure is not limited to the above-described embodiment, and can be embodied in various other forms. For example, in the present embodiment, a case has been described in which a mixer 206 separate from the packing 115 is inserted into the packing 115 to connect the wash water supply unit 200 to the packing 115, but the present disclosure is not limited to such a case. For example, a mixer integrated with the packing 115 may be provided, and the circulation path 141 may be connected to the mixer. In other words, the packing 115 itself may be the wash water supply unit, and the wash water supply unit may be provided in the packing.

[0075] In this embodiment, the case where the mixer 206 of the wash water supply unit 200 is provided in the packing 115 has been described, but the present invention is not limited to this case, and it is sufficient that at least a part of the wash water supply unit 200 is provided in the packing 115.

[0076] (Outline of the embodiment) A drum-type washing machine in a first aspect includes a housing having a housing opening that opens on its front side, a water tub having a water tub opening that opens on its front side and that is elastically supported within the housing, a rotating drum that is arranged inside the water tub and is driven to rotate, a door that can open and close the housing opening, a gasket that connects the housing opening and the water tub opening, and a wash water circulation unit that circulates wash water stored in the water tub, the wash water circulation unit including a circulation path, a circulation pump, and a wash water supply unit that mixes air into the wash water in the circulation path and supplies the water to the internal space of the rotating drum, the wash water supply unit including a mixing unit that mixes air into the wash water, and an inlet and an outlet that are respectively connected to the mixing unit, and at least a portion of the wash water supply unit is provided in the gasket.

[0077] As a drum type washing machine in a second aspect, in the drum type washing machine in the first aspect, the gasket has a first mounting portion attached to the water tub opening, a second mounting portion attached to the housing opening, and a bellows portion located between the first mounting portion and the second mounting portion, and the wash water supply portion is provided between the bellows portion and the second mounting portion.

[0078] A drum type washing machine according to a third aspect is the drum type washing machine according to the first or second aspect, wherein at least the part of the wash water supply section includes the mixer section.

[0079] As a drum type washing machine in a fourth aspect, in the drum type washing machine in any one of the first to third aspects, the gasket has an insertion portion into which the wash water supply portion is inserted and a communication port that connects the insertion portion to the internal space of the rotating drum.

[0080] As a drum type washing machine in a fifth aspect, in the drum type washing machine in the fourth aspect, at least a part of the wash water supply section includes the mixing section, and the mixing section has a first flow path through which wash water flows from the inlet and a wall section that defines the first flow path, and a through hole is formed in the wall section, and a second flow path that communicates with the first flow path through the through hole is provided between the wall section and the insertion section of the gasket.

[0081] A drum type washing machine according to a sixth aspect is the drum type washing machine according to the fifth aspect, wherein the second flow path communicates with the internal space of the rotary drum through the communication port.

[0082] As a drum type washing machine in a seventh aspect, in the drum type washing machine in the fifth or sixth aspect, the mixing section further has another wall section that protrudes outward from the wall section and contacts the insertion section, and a fixing member is further provided to fix from the outside the point of the insertion section that contacts the other wall section.

[0083] As a drum type washing machine in an eighth aspect, in the drum type washing machine in any one of the fourth to seventh aspects, the gasket has a guide portion that guides the washing water discharged from the communication port into the internal space of the rotating drum.

[0084] As a drum type washing machine in a ninth aspect, in the drum type washing machine in any one of the fourth to eighth aspects, the insertion portion has a reduced diameter portion that reduces in diameter to receive the wash water supply portion in the insertion direction and faces the outlet.

[0085] As a drum type washing machine in a tenth aspect, in the drum type washing machine in any one of the first to ninth aspects, the wash water supply unit further has a pipe portion connecting the inlet and the mixing unit, and the mixing unit has a protrusion that protrudes the pipe portion into the internal space of the mixing unit.

[0086] As a drum type washing machine in an eleventh aspect, in the drum type washing machine in any one of the first to tenth aspects, the wash water supply section has a pipe section connecting the inlet and the mixing section, and another pipe section connecting the inlet and a wall surface of the water tub covered with the gasket.

[0087] Although the present disclosure has been fully described in connection with the preferred embodiments with reference to the accompanying drawings, various changes and modifications will be apparent to those skilled in the art, and such changes and modifications are to be understood as included within the scope of the present invention as defined by the appended claims unless they depart therefrom. [Industrial Applicability]

[0088] The washing machine of the present disclosure is applicable to any drum-type washing machine. [Explanation of symbols]

[0089] 100 Drum washing machine 101 Case 101a Housing opening 102 Aquarium 102a Aquarium opening 103 Rotating Drum 103a Drum opening 105 Doors 115 Gasket 140 Washing water circulation section 141 Circulation Route 142 Circulation Pump 200 Washing water supply unit 202 First Pipe Section 204 Second Pipe Section 206 Mixing section 210 Inlet 212 Outlet

Claims

1. a housing having a housing opening on the front surface; a water tank having a water tank opening on the front surface and elastically supported within the housing; a rotary drum disposed inside the water tank and driven to rotate; a door that can open and close the housing opening; a packing that connects the housing opening and the water tank opening; a washing water circulation unit that circulates the washing water stored in the water tub, the washing water circulation unit includes a circulation path, a circulation pump, and a washing water supply unit that mixes air with the washing water in the circulation path and supplies the mixed water to the interior space of the rotary drum; The washing water supply unit has a mixing unit that mixes air into the washing water, and an inlet and an outlet that are connected to the mixing unit, and at least a portion of the washing water supply unit is provided in the gasket.

2. the packing has a first mounting portion attached to the water tank opening, a second mounting portion attached to the housing opening, and a bellows portion located between the first mounting portion and the second mounting portion, The drum-type washing machine according to claim 1 , wherein the at least a portion of the wash water supply unit is provided between the bellows portion and the second mounting portion.

3. The drum-type washing machine according to claim 1 , wherein the at least part of the wash water supply unit includes the mixing unit.

4. The drum-type washing machine according to claim 1, wherein the packing has an insertion portion into which at least a portion of the wash water supply portion is inserted, and a communication port that connects the insertion portion to an internal space of the rotary drum.

5. At least a portion of the wash water supply unit includes the mixing unit, 5. The drum-type washing machine according to claim 4, wherein the mixing section has a first flow path through which the wash water flows from the inlet and a wall portion defining the first flow path, a through hole formed in the wall portion, and a second flow path communicating with the first flow path through the through hole provided between the wall portion and the insertion portion of the gasket.

6. The drum-type washing machine according to claim 5, wherein the second flow path communicates with an internal space of the rotary drum through the communication port.

7. the mixing section further has another wall section that protrudes outward from the wall section and contacts the insertion section, The drum-type washing machine according to claim 5 , further comprising a fixing member for fixing from outside a portion of the insertion portion that contacts the other wall portion.

8. The drum-type washing machine according to claim 4, wherein the packing has a guide portion that guides the wash water discharged from the communication port into the internal space of the rotary drum.

9. The drum-type washing machine according to claim 4, wherein the insertion portion has a reduced diameter portion that is reduced in diameter to receive the wash water supply portion in the insertion direction and faces the outlet.

10. The wash water supply unit further includes a pipe unit connecting the inlet and the mixing unit, The drum-type washing machine according to claim 1 , wherein the mixing section has a protruding portion that protrudes the pipe portion into an internal space of the mixing section.

11. 2. The drum-type washing machine according to claim 1, wherein the wash water supply unit has a pipe unit connecting the inlet and the mixing unit, and another pipe unit connecting the inlet and a wall surface of the water tub covered with the packing.

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