JP6311123B2 - Washing machine - Google Patents

Description

  The present invention relates to a washing machine provided with a water injection device for supplying a washing aid such as a detergent or a softener into a washing tub together with water supply.

  A conventional washing machine includes a water injection device that houses a detergent case into which a detergent is put before a user starts a washing operation, and has a water injection case that is connected to a water supply or the like to be supplied. (For example, refer to Patent Document 1). A conventional water injection device for a washing machine will be described with reference to FIGS. 9 and 10.

  FIG. 9 is a side sectional view of a conventional washing machine. As shown in FIG. 9, the washing machine has a water tank 102 inside the main body 101. A washing tub 103 is disposed inside the water tub 102. The washing tub 103 has a large number of water passage holes 103b on the side wall, and a pulsator 104 that agitates the laundry on the bottom. The washing tub 103 also functions as a dewatering tub that rotates at high speed in the dehydration process. A motor 105 is disposed below the main body 101. The motor 105 rotates the washing tub 103 and the pulsator 104 via the transmission mechanism 106.

  The main body 101 has an upper frame body 107 at the top. The upper frame 107 has an opening at the center where a laundry is taken in and out by a user, and includes a lid 108 that opens and closes the opening. The upper frame 107 has a control device 109 that executes a series of washing operations such as a washing process, a rinsing process, and a dehydrating process, and an operation display unit 109a that allows the user to set the washing operation, and has a laundry. A water injection device 110 for supplying water to the tank 103 is provided at the rear.

  FIG. 10 is an exploded perspective view of a conventional water injection device for a washing machine. The water injection device 110 is formed at the center of the lower surface cover 111 that covers the lower surface of the rear portion of the upper frame 107. Electric parts such as a vibration detection device (not shown) are disposed on both sides of the water injection device 110. The water injection device 110 includes a detergent case 112 into which detergent is poured by a user before the start of operation, a water supply valve 113 having a connection port 113a with water, a water injection case 114 that holds the detergent case 112 and has a water injection path. It has. The water injection case 114 has an opening at the front, and holds the detergent case 112 so that it can be inserted and removed freely. The water injection case 114 includes a lower water injection part 114a that constitutes the lower part of the water injection device 110 and an upper water injection part 114b that covers the upper part. The lower water injection portion 114a includes a bottom wall 114c having water injection holes, an upper water supply port 115a that supplies only the tap water to the washing tub 103, and a lower water supply port 115b that supplies tap water mixed with a detergent. And the lower water injection part 114a and the upper water injection part 114b are fixed by welding, and form the water injection path connected from the water supply valve 113.

  With these configurations, the control device 109 opens and closes the water supply valve 113 based on the setting of the user's washing operation. At this time, in the washing process, tap water is supplied from the upper water supply port 115a to the washing tub, and is supplied from the lower water supply port 115b to the washing tub while flowing into the detergent case 112 and mixing the detergent. In the rinsing process, tap water is supplied to the washing tub from the upper water supply port 115a, and the detergent in the detergent case 112 has already flowed out, so that only tap water is supplied from the lower water supply port 115b to the washing tub. Is done.

  Moreover, FIG. 11 is a perspective view of the water injection apparatus of the other conventional washing machine (for example, refer patent document 2). The water injection device 121 includes a detergent case 122 and a softener case 123, and includes a water supply port 122a through which tap water flows into the detergent case 122 and a water supply port 123a through which the softener case 123 flows. With this configuration, the control device can perform control so that the detergent is introduced in accordance with the washing process and the softening agent is introduced in accordance with the rinsing process.

JP 2014-033837 A JP 2007-181746 A

  However, in the structure of the water injection case of the conventional washing machine, when there is a part that is not completely bonded in the welding between the lower water injection part and the upper water injection part, water is supplied from the gap due to poor welding when water is supplied from the water supply valve. Leak out. In such a case, there is a problem that water contacts or enters the electrical terminals of electrical components such as a water supply valve of the water injection device, thereby causing malfunction or failure of the washing machine.

  The present invention solves the above-described conventional problems, and includes a water injection device having a water injection case integrally formed without using a fixing method such as adhesion, and causes malfunction due to water leakage from the water injection device. An object of the present invention is to provide a washing machine that prevents the above.

In order to solve the conventional problems, a washing machine of the present invention includes a washing tub provided inside a main body, a water injection device for supplying water to the washing tub, a series of steps such as a washing step, a rinsing step, and a dehydrating step. A control device that executes a washing operation, and the water injection device includes a housing case into which a user puts a washing aid before the start of operation, and an opening formed in the front part that is integrally formed with the housing case. A water injection case that is detachably held, a rectification unit that is disposed inside the water injection case and forms a water injection path, a first water injection unit that communicates with the rectification unit, and a first communication unit that communicates with the first water injection unit. a first water supply valve, possess a second water injection unit for injection into said receiving case provided in the water injection case, and a second water supply valve communicating with the second water injection unit, wherein the first injection At least on the left side or the right side on the rear side of the housing case. Provided to the water injection from one shift, the rectifying unit is provided in an rear side of the bottom of the housing case, and is formed with an outlet in the center of the housing case.

  As a result, the water injection device has a water injection case that is integrally formed without using a fixing method such as welding, thereby preventing malfunctions due to water leakage from the water injection device and improving the reliability of the washing machine. Can be improved. Moreover, it can be set as the rational manufacturing process which does not require adhesion processes, such as welding of a water injection case, and a leak test process.

  The washing machine of the present invention can prevent the occurrence of malfunction due to water leakage from the water injection device, and can improve the reliability of the washing machine.

Side surface sectional drawing of the washing machine in Embodiment 1 of this invention Cross-sectional side view of the main part of the washing machine in the present embodiment Exploded perspective view of water injection device for washing machine in the present embodiment (A) The top view of the storage case of the washing machine in this Embodiment (b) The top view of the storage case which removed the cover Side surface sectional view of the storage case of the washing machine in the present embodiment Front sectional view of the storage case of the washing machine in the present embodiment Front sectional view of a water injection device for a washing machine in the present embodiment Backward perspective view of rectification unit of washing machine in the present embodiment Cross section of the main part of a conventional washing machine An exploded perspective view of a conventional water injection device for a washing machine The perspective view of the water injection apparatus of other conventional washing machines

A washing machine according to a first aspect of the present invention includes a washing tub provided inside the main body, a water pouring device for supplying water to the washing tub, and a control device for executing a series of washing operations such as a washing step, a rinsing step, and a dehydrating step. The water injection device includes a storage case in which a user puts in a laundry aid before the start of operation, and a water injection case that has an opening at the front and is formed integrally and holds the storage case freely. A rectifying unit disposed in the water injection case to form a water injection path, a first water injection unit communicating with the rectification unit, a first water supply valve communicating with the first water injection unit, and the water injection a second water injection unit for injection into said receiving case provided in the case, have a, a second water supply valve communicating with the second water injection unit, the first water injection unit, after the housing case Set the side to pour water at least from either the left or right side. Is, the rectifying unit is provided in an rear side of the bottom of the housing case, and is formed with an outlet in the center of the housing case.

  As a result, the water injection device has a water injection case that is integrally formed without using a fixing method such as welding, thereby preventing the occurrence of malfunction due to water leakage from the water injection device and the reliability of the washing machine. Can be improved. Moreover, it can be set as the rational manufacturing process which does not require adhesion processes, such as welding of a water injection case, and a leak test process.

In addition, the water that has reached the outlet of the rectifier flows out to the substantial center of the water flow surface of the water injection case, flows smoothly through the water flow surface and is supplied to the washing tub, and the water splashes outside the washing tub. Can be prevented.

According to a second aspect of the present invention, particularly in the first aspect , the second water injection section is provided so as to inject only a part of the water supplied from the second water supply valve into the housing case. is there. Thus, the amount of water to be poured can be limited and the momentum of the water flow can be suppressed, so that the washing aid does not overflow from the storage case.

In a third aspect of the invention, particularly in the first or second aspect of the invention, the second water injection section is provided so as to inject water into the rear side of the storage case from above, and the storage case is the second water injection section. It is formed by inclining the part that receives water injection from the part. Thereby, it is possible to prevent the injected water from stirring the washing aid as a smooth water flow due to the inclination of the storage case and remaining in the storage case.

In a fourth aspect of the invention, particularly in any one of the first to third aspects of the invention, the rectifying portion has a rib on the inner side. Thereby, the water supply pressure at the time of water supply can be reduced by the rib, and the momentum of the water flow can be suppressed to prevent the water supplied to the washing tub from being scattered.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Further, the present invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a side sectional view of a washing machine according to Embodiment 1 of the present invention. As shown in FIG. 1, the washing machine has a water tank 13 inside the main body 11. The water tank 13 is suspended and supported by a suspension 12 for vibration isolation. A washing tub 15 is disposed inside the water tub 13. The washing tub 15 also serves as a dehydration tub. The washing tub 15 has a large number of water holes 16 on the side wall, a fluid balancer 17 is disposed at the top, and a pulsator 18 is disposed at the center bottom. The rotating shaft 14 is hollow and has a biaxial structure for rotating the washing tub 15 or the pulsator 18, and includes a transmission mechanism 19. The transmission mechanism 19 includes a reduction gear (not shown) during washing and a switching clutch (not shown) for the rotating shaft 14 and a brake (not shown) for stopping the washing tub 15 during dehydration. Yes.

  The motor 20 is attached to the bottom of the water tank 13. The motor 20 has a motor-side pulley 21, and transmits power to a mechanical-side pulley 22 of the transmission mechanism 19 via a belt 23 to rotate the rotating shaft 14.

  The main body 11 has an upper frame 24 at the top. The upper frame 24 has an opening 25 through which laundry is taken in and out by the user, and the opening 25 is covered with a lid 26 so as to be freely opened and closed. The upper frame body 24 is provided with a control device 36 that controls an electrical component such as the motor 20 to execute a series of washing operations such as a washing process, a rinsing process, and a dehydrating process. A display unit 37 is provided.

  FIG. 2 is a cross-sectional view of a main part of the washing machine in the present embodiment. FIG. 3 is an exploded perspective view of the water injection device for the washing machine according to the present embodiment. The upper frame body 24 includes a lower surface cover 38 that covers the lower surface of the rear portion. The lower surface cover 38 has a water injection case 31 for forming a water injection device 39 at the center, and bosses to which electric parts (not shown) such as a vibration detection device for detecting unbalance of laundry are attached on both sides thereof. Etc. are formed and attached from below the upper frame 24.

  The water injection device 39 is provided so as to be located at the rear portion of the opening 25 and is configured to be connected to water. The water injection device 39 includes a storage case 29 into which a washing aid is put by a user before starting operation in a water injection case 31 formed on the lower surface cover 38. The water injection case 31 has an opening at the front, and holds the housing case 29 so that it can be inserted and removed freely. In addition, the water injection case 31 has a bottom surface inclined from the rear to the front and a flowing water surface 35 inclined downward from the left and right to the center. In addition to the detergent added in the washing process, the washing aid includes a softener and a finish added in the rinsing process. In the present embodiment, a description will be given assuming that a rinse aid for rinsing is used in the rinsing step.

  4A and 4B are plan views of the storage case of the washing machine according to the present embodiment. FIG. 4A shows a normal state of the storage case, and FIG. 4B shows a state where the cover is removed from the storage case. FIG. 5 is a side sectional view of the housing case, and FIG. 6 is a front sectional view of the housing case. The storage case 29 has a handle 29a at the front portion, a storage portion 29b that holds a laundry aid that is depressed toward the center, and a cylindrical first member that has a through-hole in the vertical direction at the bottom of the storage portion 29b. 1 boss 29c. The first boss 29c has a longitudinal rib 29d around it.

  In addition, the storage case 29 includes a cover 43 that covers the storage portion 29b and has a loading portion 43a that serves as a guide for a position where the user loads the laundry aid. The cover 43 has a second boss 43b on the lower surface of the rear portion of the insertion portion 43a. The second boss 43b is fitted to the first boss 29c via a rib 29d. Accordingly, the cover 43 is supported by the first boss 29c and the peripheral wall 29e of the accommodating portion 29b with the gap S1 and the gap S2 between the upper and lower ends inside the second boss 43b. A siphon flow path 44 through which water containing the washing aid is discharged is formed by the gaps S1 and S2 between the first boss 29c and the second boss 43b and the through-hole of the first boss 29c.

  Furthermore, a groove 29f is formed on the front portion of the housing portion 29b and on the left and right outer sides. A through hole 29g opened to the flowing water surface 35 is provided at the bottom of the left and right grooves 29f. Further, the rear wall 29h of the housing case 29 has an inclination formed in a smooth arc toward the bottom surface of the housing portion 29b.

  FIG. 7 is a front sectional view of the water injection device for the washing machine in the present embodiment. As shown in FIG. 3 and FIG. 7, the water injection case 31 is formed with three water injection portions at the upper part on the rear side. Among these, the 1st water injection part 31a is provided with the 1st water supply valve 28a, the 2nd water injection part 31b is provided with the 2nd water supply valve 28b, and the 3rd water injection part 31c is provided with the 3rd water supply valve 28c. ing. The first water supply valve 28a and the second water supply valve 28b are connected to a water supply (not shown) so that room temperature tap water is supplied. The third water supply valve 28c is connected to a water heater (not shown) so that hot water is supplied. In the present embodiment, the first water supply valve 28a and the second water supply valve 28b are two integrated water supply valves. Further, if there is no water heater, the connection to the third water supply valve 28c may not be performed.

  FIG. 8 is a reverse perspective view of the rectifying unit of the washing machine in the present embodiment. The first water injection part 31a and the third water injection part 31c extend to the bottom part inside the water injection case 31, and have openings 32 so as to face each other near the bottom part. And the rectification | straightening part 42 is arrange | positioned in the back | inner side of the bottom part of the water injection case 31, and between the opening 32 which faces this. As shown in FIG. 8, the rectifying unit 42 has inlet portions 42 a communicating with the openings 32 at the left and right ends, and outlet portions 42 c at the substantial center on both sides with a partition portion 42 b formed at the center. Have Moreover, the rectification | straightening part 42 has several rib 42d so that water may meander and flow inside the entrance part 42a and the exit part 42c. As shown in FIG. 7, when the rectifying unit 42 is combined with the water injection case 31, each of the first water injection unit 31 a and the third water injection unit 31 c is turned 90 degrees to the center of the water injection case 31. Two flow paths are formed.

  As shown in FIG. 2, the second water injection section 31 b is provided directly above the rear wall 29 h of the storage case 29 in a state where the storage case 29 is stored in the water injection case 31. In the present embodiment, almost half of the hole area of the second water injection part 31 b overlaps the housing case 29. Furthermore, although the rear wall 29h is close to the rectifying unit 42, the rectifying unit 42 has a wall surface shape along the inclination of the rear wall 29h, and forms a gap S3 having a predetermined dimension with the rear wall 29h.

  In the water injection device 39 configured as described above, a flow path through which water flows will be described.

  First, as shown by an arrow A in FIGS. 7 and 8, water flowing from the first water supply valve 28a disposed on the right side of the water injection case 31 as viewed from the front passes through the first water injection section 31a. Then, the air flows from the opening 32a at the right bottom portion to the right inlet portion 42a of the rectifying portion 42, passes through the right flow path of the rectifying portion 42, and reaches the right outlet portion 42c.

  Further, as indicated by an arrow C, water (warm water) flowing in from the third water supply valve 28c disposed on the left side of the water injection case 31 when viewed from the front passes through the third water injection part 31c, and is on the left side. From the bottom opening 32b, the air flows into the inlet 42a on the left side of the rectifier 42, passes through the flow path on the left side of the rectifier 42, and reaches the outlet 42c on the left.

  In this way, the water that has reached the outlet 42c of the rectifying unit 42 meanders by the rib 42d formed inside the rectifying unit 42, the water supply pressure is reduced, and the momentum of the water flow is suppressed. As a result, it flows out to the substantial center of the water flow surface 35 of the water injection case 31, smoothly flows through the water flow surface 35 and is supplied to the washing tub 15 from the front end 35 a, and does not scatter water outside the washing tub 15. .

Next, as shown by the arrow B in FIGS. 2 and 7, the water that has flowed in from the second water supply valve 28b adjacent to the first water supply valve 28a passes through the second water injection portion 31b. Then, the rear wall 29h of the housing case 29 is located immediately below, and the rear wall 29h is divided into two directions of water flow indicated by arrows B1 and B2. Of these, the water flow indicated by arrow B1 is shown in FIG.
As shown in FIG. 4, the liquid flows to the outside of the housing case 29 and spreads left and right. However, the flow is adjusted to a smooth flow by the gap S <b> 3, flows out to the water flow surface 35 of the water injection case 31, and is supplied to the washing tub 15 from the front end 35 a of the water flow surface 35.

  Further, as shown in FIGS. 2, 5, and 6, the water flow indicated by another arrow B2 flows into the accommodating portion 29b of the accommodating case 29 along the inclination of the rear wall 29h. The water flow passes through the siphon flow path 44 and flows out from the storage case 29 to the flowing water surface 35 while mixing the washing aid that is swirled in the storage portion 29b and mixed before the start of operation. At this time, when the water injection into the storage case 29 is stopped, the water remaining in the storage case 29 is sucked by the siphon effect of the siphon channel 44 and almost all flows out. As a result, almost all of the supplied laundry aid flows out. And the water which flowed out from the storage case 29 to the flowing water surface 35 merges with the water flow outside the storage case 29 indicated by the arrow B 1, and is supplied to the washing tub 15 from the front end of the flowing water surface 35.

  Thus, only the water flow from the second water injection portion 31b indicated by the arrow B2 is injected into the housing case 29. And the 2nd water injection part 31b is provided so that only a part of supplied water may be poured into the storage case 29. FIG. Accordingly, the amount of water poured into the storage portion 29b is limited, the momentum of the water flow is suppressed, and the washing aid can be prevented from overflowing from the storage case 29. Further, the second water injection portion 31b is provided so as to inject water into the rear wall 29h of the storage case 29 from above, and the storage case 29 inclines the rear wall 29h that receives water injection from the second water injection portion 31b. Is formed. Accordingly, it is possible to prevent the injected water from stirring the washing aid as a smooth water flow due to the inclination of the rear wall 29 h of the storage case 29 and remaining in the storage case 29.

  In addition, when the laundry aid is put into the storage case 29 in an amount larger than the allowable amount, or when the water pressure in the water supply is strong and the amount of water poured into the storage portion 29b is larger than expected, the input portion 43a. The water level may rise and overflow from the cover 43. The overflowing water flows into the groove 29f, is guided to the through holes 29g provided on the left and right by the groove 29f, and falls to the flowing water surface 35. As a result, the overflowing water does not reach the outside of the storage case 29 and is contaminated with the laundry aid. Further, in the present embodiment, since the through holes 29g are provided in the left and right grooves 29f, the overflowing water falls to the water surface 35 at the back. The overflowing water falls irregularly, but with this configuration, the original water flow of the water flow from the rear side of the rear wall 29h and the water flow from the siphon channel 44 is joined and smoothly supplied with one water flow, Irregular fall does not cause water to scatter.

  About the washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated.

  The user opens the lid 26 and puts the laundry to be washed into the washing tub 15. Then, the storage case 29 of the water injection device 39 is pulled out from the water injection case 31 and a predetermined amount of washing aid is input to the input portion 43 a, and then the storage case 29 is stored in the water injection case 31. A predetermined amount of detergent is put into a predetermined position. The user starts the washing operation by the start switch provided on the operation display unit 37.

Thereby, the control apparatus 36 starts a washing process. First, when the 1st water supply valve 28a or warm water is used, the 3rd water supply valve 28c is opened, and water flows into the water injection case 31 from the 1st water injection part 31a or the 3rd water injection part 31c. The water that has flowed into the water injection case 31 is reduced in water supply pressure by the rectifier 42 and rectified and flows out to the water surface 35. At this time, since the water supply pressure is reduced, there is no scattering of water to the outside of the washing tub 15 due to the water supply pressure, and the appearance of the water flow is good. When the control device 36 reaches a predetermined water level, the control device 36 closes the first water supply valve 28a or the third water supply valve 28c to stop water supply, and drives the motor 20 to drive the pulsator 18.
Rotate the to perform the washing process.

  When the washing process is completed, the control device 36 drains the dirty washing water, performs intermediate dehydration, and starts the rinsing process. In the rinsing step, the second water supply valve 28b is opened, and approximately half of the flow rate of the water that passes through the second water injection part 31b flows into the housing case 29 in which the washing aid is introduced. Then, the water that has flowed into the water injection case 31 and the water that has flowed into the housing case 29 merge at the flowing water surface 35 and are supplied to the washing tub 15 as described above. When the control device 36 reaches a predetermined water level, the second water supply valve 28b is closed to stop water supply, and the motor 20 is driven to rotate the pulsator 18 to perform a rinsing process.

  When finishing the rinsing process, the control device 36 drains the rinsing water and starts the dehydration process. And if predetermined time passes, a spin-drying | dehydration process will be complete | finished and a series of washing operations will be complete | finished.

  As described above, the washing machine of the present invention, as the water injection device 39, the storage case 29 into which the user puts the laundry aid before the start of operation, and the storage case 29 that is integrally formed with an opening at the front. The water injection case 31 is provided in the water injection case 31. The water injection case 31 is provided in the water injection case 31. The water supply case 31 is provided in the water injection case 31. It has the 2nd water injection part 31b which injects water to the storage case 29, and the 2nd water supply valve 28b connected to the 2nd water injection part 31b. As a result, the water injection device 39 has the water injection case 31 formed integrally without using a fixing method such as adhesion, so that the occurrence of malfunction due to water leakage from the water injection device 39 is prevented, and the washing machine Reliability can be improved. Moreover, it can be set as the rational manufacturing process which does not require adhesion processes, such as welding of the water injection case 31, and a leak test process.

  Further, the first water injection part 31a is provided so as to inject water from at least the left side or the right side on the rear side of the storage case 29, and the rectifying part 42 is provided on the rear side of the bottom part of the storage case 29, An outlet portion 42 c is formed at the substantial center of the housing case 29. As a result, the water that has reached the outlet 42c of the rectifying unit 42 flows to the substantial center of the water flow surface 35 of the water injection case 31, flows smoothly through the water flow surface 35, and is supplied to the washing tub 15. Water can be prevented from splashing outside.

  Further, the second water injection section 31b is provided so as to inject only a part of the supplied water into the housing case 29. Accordingly, the amount of water to be poured can be restricted and the momentum of the water flow can be suppressed, so that the washing aid can be prevented from overflowing from the storage case 29.

  The second water injection portion 31b is provided at the rear end of the storage case 29 so as to inject water from above, and the storage case is formed by inclining the rear wall 29h that receives the water injection from the second water injection portion 31b. It is a thing. Accordingly, it is possible to prevent the injected water from stirring the washing aid as a smooth water flow due to the inclination of the rear wall 29 h and remaining in the housing case 29.

  Moreover, the rectification | straightening part 42 has the rib 42d inside. Thereby, the water supply pressure at the time of water supply can be reduced by the rib 42d, and the water flow supplied to the washing tub 15 can be adjusted to prevent water from being scattered.

  The storage case 29 has through holes 29g on the left and right sides that allow the overflowing water to flow into the storage case 29 and drop off. As a result, the overflowing water merges with the original water flow at the back and is smoothly supplied to the washing tub 15 with one water flow.

In the present embodiment, the washing tub is described as having a washing tub and a pulsator that are both used for washing and dehydration inside the water tub, but the application of the present invention is not limited to this, for example, The present invention can also be applied to a two-tank washing machine having a separate dewatering tank and a pulsator in a fixed washing tub, or a drum-type washing machine in which the washing tub rotates on a horizontal or inclined rotating shaft.

  In addition, the washing aid for rinsing is put into the housing case, water is supplied from the first water injection section in the washing process, and water is supplied from the second water injection section in the rinsing process. The washing aid for washing is put into the housing case, and water is supplied from the second water injection section in the washing process, and water is supplied from the first water injection section in the rinsing process. In this case, the rinse aid for rinsing can be configured to be charged in the rinsing process in a softener case provided in the washing tub.

  In addition, water supply in the rinsing process is performed only by the second water supply valve, and the amount of water injected into the housing case is adjusted by the rear wall. May flow into the housing case and at the same time the first water supply valve may be opened.

  In addition, although the plurality of water supply valves are configured to be directly attached to the corresponding water injection parts, they are connected to the water injection parts through communication pipes such as pipes and hoses, and are fixed at positions away from the water injection parts. Also good.

  Moreover, although the several water injection part was set as the structure poured from upper direction, the structure poured from the back or the side may be sufficient as a 1st water injection part and a 3rd water injection part. Moreover, the 1st water supply part and the 3rd water supply valve may be connected in parallel to the 1st water injection part, and the 3rd water injection part may be abbreviate | omitted.

  In addition, the rear wall of the housing case has an inclination formed in a smooth arc toward the bottom surface, but the present invention is not limited to this, and an inclination may be formed by combining one plane or a plurality of planes. Moreover, although the rectification | straightening part shall have a rib inside, it is not restricted to this, What is necessary is just a shape which suppresses the momentum of a water flow with the cross-sectional area and length of a flow path.

  Further, it is desirable that the through hole for dropping the overflowing water is formed so as to be located as far back as possible from the water surface. Moreover, the groove | channel provided with a through-hole may be connected from the front part of the accommodating part to right and left, and the front part may be formed only in right and left so that it may not overflow with a barrier etc.

  Further, the third water supply valve and the third water injection section are for the case of using warm water and can be omitted.

  As described above, the washing machine of the present invention, as a water injection device having an integrally formed water injection case that does not use a fixing method by bonding, prevents water leakage at the time of water supply, improves reliability, and supplies water to a water tank It is useful as a washing machine that can smooth out water and prevent splashing of water.

DESCRIPTION OF SYMBOLS 11 Main body 13 Water tank 15 Washing tank 28 Water supply valve 28a 1st water supply valve 28b 2nd water supply valve 28c 3rd water supply valve 29 Accommodating case 29a Handle 29b Accommodating part 29c Boss 29d Rib 29e Circumferential wall 29f Groove 29g Rear wall 29h 31 Water Injecting Case 31a First Water Injecting Unit 31b Second Water Injecting Unit 31c Third Water Injecting Unit 36 Control Device 38 Bottom Cover 39 Water Injecting Device 42 Rectifier 42a Inlet Portion 42b Partition Portion 42c Outlet Portion 42d Rib 43 Cover 43a Input Portion 43b Boss 44 Siphon channel

Claims (4)

A washing tub provided inside the main body, a water injection device for supplying water to the washing tub, and a control device for executing a series of washing operations such as a washing step, a rinsing step, and a dehydrating step,
The water injection device is
A storage case in which the user puts the laundry aid before the start of operation;
A water injection case that has an opening at the front and is integrally molded and holds the storage case in a freely accessible manner,
A rectifying unit disposed inside the water injection case to form a flow path;
A first water injection unit communicating with the rectifying unit;
A first water supply valve communicating with the first water injection section;
A second water pouring unit provided in the water pouring case for pouring water into the housing case;
Have a, a second water supply valve communicating with the second water injection unit,
The first water injection part is provided so as to inject water from at least the left side or the right side on the rear side of the housing case,
The rectifying unit is provided on the rear side of the bottom of the storage case, and an outlet is formed in the center of the storage case.
Washing machine. The second water injection section is provided to inject only a part of the water supplied from the second water supply valve into the housing case.
The washing machine according to claim 1 . The second water injection part is provided to inject water from above on the rear side of the housing case,
The storage case is formed by inclining a portion that receives water injection from the second water injection unit,
The washing machine according to claim 1 or 2 . The rectifying unit has a rib on the inside,
The washing machine according to any one of claims 1 to 3 .

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