JP2017205339A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To exhibit washing performance and a softening agent effect by surely inputting a liquid detergent and a softening agent.SOLUTION: An input device 50 is constituted by a case 57, a water pouring device 62 and caps 67a, 67b, and it inputs a liquid detergent or a softening agent into a washing tub 53 by a siphon phenomenon. When a total passage cross-section area between an inner bottom part 80 and a lower end of the cap 67a(or 67b) is defined as Sa, a minimum passage cross-section area between an inner peripheral surface of the cap and an outer peripheral surface of a detergent input part is defined as Sb, a total passage area between an upper end of the detergent input part and an inner surface upper direction of the cap 67a (or 67b) is defined as Sc and a minimum passage area on the inner surface of the detergent input part 66a (or 66b) is defined as Sd, the input device is constituted so that the Sd becomes the smallest. Thus, predetermined washing performance and a softening agent effect can be exhibited by surely inputting the liquid detergent or the softening agent by a siphon phenomenon.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a washing machine having an input device for supplying a liquid detergent and a softening agent to a washing tub.

  Conventionally, in this type of washing machine, a configuration of an input device that automatically supplies liquid detergent and softener during an operation process has been proposed (see, for example, Patent Document 1).

  6 is a partially cutaway perspective view of a conventional washing machine described in Patent Document 1, FIG. 7 is an exploded perspective view of a liquid detergent and a softener charging device of the washing machine, and FIG. FIG. 9 is a cross-sectional view of the liquid detergent charging unit of the apparatus, FIG. 9 is a cross-sectional view of the softener charging part of the charging apparatus, and FIG. 10 is a cross-sectional view of the charging apparatus as viewed from the front.

  As shown in FIG. 6, the outer frame 1 has an outer box 2 fixed to the upper portion, and supports an outer tub 5 in which the upper portion of the outer frame 1 is covered with a cover 4 from the upper corner of the outer frame 1. A washing tub 3 is rotatably supported in the outer tub 5, and a plurality of small holes 3 a are formed in the peripheral wall of the washing tub 3. A large opening 2a is formed at the center of the outer box 2, and the opening 1a is closed by a lid 6 so as to be freely opened and closed.

  The liquid detergent and softener charging device 7 is for charging liquid detergent and softener. As shown in FIG. 7, a case 10 having a liquid detergent charging portion 8 and a softener charging portion 9, and this case 10. And a water injection device 13 for injecting water into the washing tub 3 through the case 10 from the water supply paths 11 and 12.

  As shown in FIG. 8, the water injection device 13 enables water injection from the water injection part 14 communicating with the water supply path 11 to the liquid detergent introduction part 8 in the case 10 through the plurality of holes 15, and as shown in FIG. Water can be poured into the softener charging unit 9 in the case 10 through a plurality of holes 17 from a water injection unit 16 communicating with the water supply path 12.

  A substantially cylindrical cleaning agent charging unit 18 that communicates with the lower surface of the water injection device 13 is provided at the inner bottom of the liquid detergent charging unit 8, and an upper portion and a periphery of the cleaning agent charging unit 18 are connected to a cap 19 via a gap. Covered with.

  A substantially cylindrical cleaning agent charging unit 20 that communicates with the lower surface of the water injection device 13 is provided at the inner bottom of the softening agent charging unit 9, and an upper portion and a periphery of the cleaning agent charging unit 20 are connected to a cap 21 via a gap. Covered with.

  In the above configuration, when the liquid detergent is used, the case 10 is pulled out, the liquid detergent is put into the liquid detergent charging unit 8, and the case 10 is stored in the water injection device 13 as shown in FIG. In this state, when tap water is supplied from the water supply path 11 to the water injection section 14, the supplied water is injected into the liquid detergent input section 8 through the plurality of holes 15, and the liquid detergent in the liquid detergent input section 8 is diluted. Through the path indicated by the arrow a, the liquid detergent overflows from the liquid detergent inlet 8 and is poured into the washing tub 3 along with the liquid detergent through the discharge port 22.

  Further, the cleaning liquid containing the liquid detergent remaining in the liquid detergent charging unit 8 is discharged from the path indicated by the arrow b even after the water injection from the water supply path 11 is finished by the siphon phenomenon, and the outlet of the liquid detergent charging unit 8 The water is poured into the washing tub 3 from the discharge port 22 through 8c.

  Here, the siphon phenomenon will be described. When water is poured from the plurality of holes 15 and the water level rises to the inner upper surface c of the cap 19, the cleaning liquid containing the liquid detergent starts to fall from within the liquid detergent charging unit 8. At this time, the falling cleaning liquid works to suck up the cleaning liquid in the liquid detergent charging unit 8 and discharges all the cleaning liquid in the liquid detergent charging unit 8 in a chain.

  Next, when using the softening agent, the case 10 is pulled out, the softening agent is put into the softening agent charging unit 9, and the case 10 is stored in the water injection device 13 as shown in FIG. 9. In this state, when tap water is supplied from the water supply path 12 to the water injection section 16 during rinsing, the supplied water is injected into the softener input section 9 through the plurality of holes 17 and the soft detergent in the softener input section 9 is diluted. However, it overflows from the softener charging section 9 through the path indicated by the arrow a, and is poured into the washing tub 3 together with the softener through the discharge port 22.

  Further, the cleaning liquid containing the softener remaining in the softener charging section 9 is discharged from the path indicated by the arrow b even after the water injection from the water supply path 12 is finished according to the siphon principle. Water is poured into the washing tub 3 from the discharge port 22 through the outlet 9c.

JP 2010-240047 A

  However, in the conventional configuration, when the tap water pressure is low and the amount of water to be injected is small, or the momentum of water injection is low, or the temperature is low and the viscosity of the liquid detergent or softener is high, the liquid The detergent or softening agent cannot be sufficiently diluted, the liquid detergent or the cleaning liquid containing the softening agent remains in the flow path inside the caps 19 and 21 with a high viscosity, and the siphon phenomenon does not work well. There is a problem that the cleaning liquid cannot flow out from the outlets 8c and 9c, or the outflow amount is reduced, and a large amount of the cleaning liquid remains in the liquid detergent charging unit 8 or the softener charging unit 9.

  The present invention solves the above-mentioned conventional problems. Regardless of the water pressure, the amount of water used, the type of liquid detergent or softener, the temperature, etc. It aims at providing the washing machine which exhibits the washing performance and the softening agent effect.

  In order to solve the above-described conventional problems, the washing machine of the present invention includes an outer frame, an outer tub supported by vibration isolation in the outer frame, a washing tub rotatably supported in the outer tub, An upper frame disposed on the upper part of the outer frame; and a charging device that is housed in the upper frame and supplies a liquid detergent or a softening agent into the washing tub. A case for containing a cleaning agent, and a water injection device for storing the case so that the case can be pulled out, the case being formed in communication with a lower surface of an inner bottom portion, the substantially cylindrical cleaning agent charging portion, and the cleaning agent A cap that covers the upper portion and the periphery of the charging portion with a gap therebetween, and the charging device has a total cross-sectional area Sa between the inner bottom portion of the case and the lower end of the cap, and an inner peripheral surface of the cap. The minimum cross-sectional area between the outer peripheral surfaces of the cleaning agent charging portion is Sb, and the cleaning agent injection Upper parts and the total passage area between the inner surface on side of the cap Sc, the smallest passage area of the inner surface of the cleaning agent dispenser unit as Sd, is obtained by setting such that the Sd is the smallest.

This ensures that regardless of water pressure, amount of water used, type of liquid detergent or softener, temperature, etc.
Due to the siphon phenomenon, a liquid detergent or a softening agent can be put into the washing tub to exhibit a predetermined cleaning performance and softening agent effect.

  The washing machine of the present invention ensures that a liquid detergent or softener is introduced by a siphon phenomenon regardless of the water pressure, the amount of water used, the type of liquid detergent or softener, the temperature, etc. The softener effect can be exhibited.

The longitudinal cross-sectional view of the washing machine in embodiment of this invention Disassembled perspective view of liquid detergent and softener charging device of the washing machine Longitudinal sectional view of the washing machine as viewed from the front Longitudinal section viewed from the side of the washing machine input device Enlarged cross-sectional view around the detergent charging part of the washing machine charging device Perspective view of a conventional washing machine with a part cut away Disassembled perspective view of liquid detergent and softener charging device of the washing machine Sectional view of the liquid detergent charging part of the washing machine charging device Sectional view of the softener charging section of the washing machine charging device Sectional view seen from the front of the input device of the washing machine

The first invention includes an outer frame, an outer tub supported in a vibration-proof manner in the outer frame, a washing tub rotatably supported in the outer tub, and an upper frame disposed on the upper portion of the outer frame. And a charging device that is placed in the upper frame and supplies a liquid detergent or softening agent into the washing tub. The charging device draws out the case and a case that stores the liquid detergent or softening agent. The case has a water injection device stored therein, and the case has a gap between a substantially cylindrical cleaning agent charging portion formed in communication with the lower surface of the inner bottom portion, and an upper portion and the periphery of the cleaning agent charging portion. A cap provided and covered, wherein the charging device has a total passage cross-sectional area Sa between the bottom of the case and the lower end of the cap, and a minimum between the inner peripheral surface of the cap and the outer peripheral surface of the cleaning agent charging unit. The cross-sectional area of the passage becomes Sb, the upper end of the cleaning agent charging part and the upper surface of the inner surface of the cap The total passage area of the Sc, the smallest passage area of the inner surface of the cleaning agent dispenser unit as Sd, is obtained by setting such that the Sd is the smallest.

  As a result, regardless of the water pressure, the amount of water used, the type of liquid detergent or softener, the temperature, etc., the liquid detergent or softener is put into the washing tub by the siphon phenomenon, and the predetermined cleaning performance and softener effect are achieved. Can be demonstrated.

  In the second aspect of the invention, in particular, in the first aspect of the invention, the passage sectional area of the inner surface of the cleaning agent introduction part is set so that the passage sectional area of the outlet which is the lowest end part is minimized.

  As a result, regardless of the water pressure, the amount of water used, the type of liquid detergent or softener, the temperature, etc., the liquid detergent or softener is put into the washing tub by the siphon phenomenon, and the predetermined cleaning performance and softener effect are achieved. Can be demonstrated.

  According to a third aspect of the present invention, in particular, in the first or second aspect of the present invention, the charging device has a ratio of the respective passage cross-sectional areas Sa, Sb, Sc, Sd such that Sa: Sb: Sc: Sd = 2 ± 10%: 2 ± 10%: 2 ± 10%: 1 is set.

  As a result, regardless of the water pressure, the amount of water used, the type of liquid detergent or softener, the temperature, etc., the liquid detergent or softener is put into the washing tub by the siphon phenomenon, and the predetermined cleaning performance and softener effect are achieved. Can be demonstrated.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a washing machine according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a liquid detergent and softener charging device of the washing machine, and FIG. 3 is a drawing of the washing machine charging device. FIG. 4 is a longitudinal sectional view as seen from the front, and FIG. 4 is a longitudinal sectional view as seen from the side of the charging device of the washing machine.

  As shown in FIGS. 1 to 4, the outer frame 51 is provided with an upper frame body 52 at the top, and the outer tank 55 covered with a cover 54 is suspended from the upper corner of the outer frame 51. I support it. A washing tub 53 is rotatably disposed in the outer tub 55, and the washing tub 53 has a plurality of small holes (not shown) on the peripheral wall. In the substantially central portion of the upper frame 52, a charging port 52a is formed, and a lid 56 is provided so as to cover the charging port 52a so as to be freely opened and closed.

  A pulsator 82 for stirring clothes is rotatably disposed on the inner bottom of the washing tub 53, and a motor (not shown) is provided on the outer bottom of the outer tub 55, and the motor (not shown) is pulsator. The laundry tub 53 is selectively rotated.

  Further, in the upper frame body 52, a pouring device 50 constituted by a water pouring device 62 and a case 57 accommodated in the water pouring device 62 so as to be drawable is accommodated at a position facing the washing tub 53.

  The case 57 includes a liquid detergent box 59 into which a liquid detergent is placed and a softener box 60 into which a liquid softener is placed. A space 61 is provided between the liquid detergent box 59 and the softener box 60. .

  The water injection device 62 drops the tap water supplied via the water supply path 65 into the case 57 from the water injection port 69 and injects the water into the washing tub 53 from the discharge port 63. The water supply path 65 is connected to a water supply valve (not shown) having a multi-valve structure in which two or more water paths can be opened and closed, and water is separately poured into the liquid detergent box 59 and the softener box 60 in the case 57, respectively. As will be described later, a liquid detergent or a softening agent is put into the washing tub 53 by a siphon phenomenon.

  The case 57 includes a substantially cylindrical cleaning agent charging portion 66a communicating with the lower surface of the inner bottom portion 80 of the liquid detergent box 59, a cap 67a covering the upper portion and the periphery of the cleaning agent charging portion 66a with a gap S therebetween, The softener box 60 also has a substantially cylindrical cleaning agent charging portion 66b having the same configuration, and a cap 67b that covers the upper portion and the periphery of the cleaning agent charging portion 66b with a gap S therebetween.

  The cap 67a has an opening 68 at substantially the center, is provided on the top surface of the water injection device 62, and is provided with an inclined wall 70 at a position facing the water injection port 69 located above the opening 68 of the cap 67a. .

  Further, a control means 83 is disposed on the back surface portion of the outer frame 51, and controls the motor, the water supply valve, and the like, and sequentially controls each process such as washing, rinsing and dehydration.

  In the above configuration, when liquid detergent and softener are used, the case 57 is pulled out, the liquid detergent is put into the liquid detergent box 59 to which the cap 67a is attached, and the softener is put into the softener box 60 to which the cap 67b is attached. Into the water injection device 62.

In the washing process, when tap water is supplied from the water supply valve through the water supply path 65, the supplied water is injected into the liquid detergent box 59 from the water injection port 69 located on the upper side of the liquid detergent box 59,
The liquid detergent box 59 is filled while thinning the liquid detergent in the liquid detergent box 59.

  When the water level in the liquid detergent box 59 rises, cleaning liquid containing tap water and liquid detergent enters the gap S between the cleaning agent charging part 66a and the cap 67a, and the water level rises and tap water and liquid detergent become cleaning agents. It reaches the upper end of the insertion portion 66a.

  Since the viscosity of the liquid detergent is generally considerably large with respect to water, the passage resistance when the cleaning liquid passes through the gap S between the cleaning agent charging portion 66a and the cap 67a cannot be ignored. Until the liquid detergent is sufficiently diluted with water, the gap S is filled with a liquid having a high viscosity and a high viscosity. Therefore, the flow rate of the cleaning liquid in the gap S is slow.

  When a certain amount of dilution is performed and the viscosity of the cleaning liquid becomes small, the air between the cleaning agent charging portion 66a and the cap 67a is pushed out from the outlet 81 by the flow of the cleaning liquid, and the cleaning liquid increases the momentum from the outlet 81 due to the siphon phenomenon. Then, the siphon operation is started.

  Even after the water supply from the water supply path 65 is stopped, the siphon operation is continued, and the cleaning liquid in the liquid detergent box 59 is discharged, so that the liquid detergent is put into the washing tub 53 through the discharge port 63. Then, when the water level of the liquid detergent box 59 falls and siphon operation cannot be continued, the air flows backward from the outlet 81, and the cleaning liquid between the cleaning agent charging part 66a and the cap 67a is put into the liquid detergent box 59. Pushing back ends the siphon operation.

  Here, if the gap S between the cleaning agent charging part 66a and the cap 67a is large, the remaining amount of the cleaning liquid pushed back into the liquid detergent box 59 after the siphon operation is finished increases. If the gap S is reduced in order to reduce the remaining water amount of the cleaning liquid, if the viscosity of the cleaning liquid is high, the siphon operation itself does not start or stops halfway, and the remaining water amount increases, resulting in a liquid detergent. Can no longer flow into the washing tub 3.

  In the rinsing process, when water is supplied from the water supply valve in the same manner as in the washing process, the softening agent stored in the softening agent box 60 is put into the washing tub 53 by a siphon phenomenon.

  FIG. 5 is an enlarged cross-sectional view of the periphery of the detergent charging portion of the charging device for the washing machine in the embodiment of the present invention.

  In FIG. 5, Sa represents an annular passage cross-sectional area generated between the inner bottom portion 80 and the lower end of the cap 67a, and Sb represents a passage cross-sectional area (minimum portion) between the inner peripheral surface of the cap 67a and the outer peripheral surface of the cleaning agent charging portion 66a. An annular passage cross-sectional area between the upper end of the cleaning agent charging part 66a and the upper surface of the inner surface of the cap 67a is Sc, and a cross-sectional area (minimum part) of the inner surface of the cleaning agent charging part 66a is Sd.

  Since the inner surface of the cleaning agent charging portion 66a has an inverted conical shape in the downward direction, that is, the outlet 81 has the smallest cross-sectional area, the passage cross-sectional area (minimum portion) Sd of the inner surface of the cleaning agent charging portion 66a is equal to the area of the outlet 81. Become. The inner surface of the cleaning agent feeding portion 66a is a smooth surface without steps or protrusions so as not to adversely affect the siphon operation.

  Further, among the passage cross-sectional areas Sa to Sd, the shape is set so that Sd becomes the smallest, and the ratio thereof is set to the ratio of Sa: Sb: Sc: Sd = 2: 2: 2: 1. Yes. This is because if the speed at which the cleaning liquid flows out from the outlet 81 (Sd portion) is larger than the speed at which the cleaning liquid flows in from the Sa portion, air flows backward from the outlet 81 and the siphon operation stops halfway.

By setting the shapes as described above, when the siphon operation is finished, the liquid detergent in the liquid detergent box 59 and the solution thereof do not leave a specified amount or more, and the liquid when the liquid detergent is put in next time use is used. Detergent overflow can be prevented, and an appropriate amount can be introduced at an appropriate time.

  In the present embodiment, the liquid detergent box 59 into which the liquid detergent is introduced has been described, but the softener box 60 into which the softener is put in is also configured in a similar manner so that the soft detergent and its solution remain. It is possible to suppress and throw in an appropriate amount at an appropriate time.

  As described above, in the present embodiment, the charging device 50 that includes the case 57, the water injection device 62, and the caps 67a and 67b and supplies the liquid detergent or softener to the washing tub 53 by the siphon phenomenon is the case. Sa is the total passage sectional area between the inner bottom 80 and the lower end of the cap 67a (or 67b), and Sb is the smallest passage sectional area between the inner peripheral surface of the cap and the outer peripheral surface of the cleaning agent charging portion. Sd is the smallest when Sc is the total passage area between the upper end of the cap and the upper surface of the inner surface of the cap 67a (or 67b), and Sd is the minimum passage area of the inner surface of the cleaning agent inlet 66a (or 66b). By forming and configuring, the liquid detergent or softener is ensured by the siphon phenomenon regardless of the water pressure, amount of water used, liquid detergent or softener By turned it can exhibit a predetermined cleaning performance and softening effect.

  Further, the charging device 50 is configured so that the channel cross-sectional area of the outlet 81 that is the lowermost end portion is formed to be the smallest in the channel cross-sectional area of the inner surface of the cleaning agent charging part 66a (or 66b), Regardless of the water pressure, the amount of water used, the type of liquid detergent or softener, the temperature, etc., the liquid detergent or softener can be reliably introduced by the siphon phenomenon to achieve the specified cleaning performance and softener effect. it can.

  In addition, the charging device 50 is configured so that the ratio of the passage cross-sectional areas Sa, Sb, Sc, Sd is Sa: Sb: Sc: Sd = 2 ± 10%: 2 ± 10%: 2 ± 10%: 1. By forming the structure, the liquid detergent or softener can be surely introduced by the siphon phenomenon regardless of the water pressure, the amount of water used, the type of liquid detergent or softener, the temperature, etc. An agent effect can be exhibited.

  Regardless of water pressure, amount of water used, type of liquid detergent or softener, temperature, etc., make sure that liquid detergent or softener is introduced by the siphon phenomenon to exert the specified cleaning performance and softener effect. Therefore, it can be applied to other washing machine uses such as a drum type.

50 charging device 51 outer frame 52 upper frame 53 washing tub 55 outer tub 57 case 62 water injection device 66a, 66b cleaning agent charging part 67a, 67b cap 80 inner bottom part

Claims (3)

An outer frame, an outer tub supported in an anti-vibration manner in the outer frame, a washing tub rotatably supported in the outer tub, an upper frame disposed on the upper portion of the outer frame, and the upper frame A charging device that is placed in the body and supplies a liquid detergent or softening agent into the washing tub, the charging device storing a case that stores the liquid detergent or softening agent, and a water injection device that stores the case so that the case can be pulled out The case includes a substantially cylindrical cleaning agent charging portion formed in communication with the lower surface of the inner bottom portion, and a cap that covers the upper portion and the periphery of the cleaning agent charging portion with a gap therebetween. The charging device has a total passage cross-sectional area Sa between the inner bottom portion of the case and the lower end of the cap, and a minimum cross-sectional area between the inner peripheral surface of the cap and the outer peripheral surface of the cleaning agent charging portion. Sb, the total passage area between the upper end of the cleaning agent charging part and the upper surface of the inner surface of the cap Sc, the minimum passage area of the inner surface of the cleaning agent dispenser unit as Sd, washing machine was set to the Sd is the smallest. The washing machine according to claim 1, wherein the passage cross-sectional area of the inner surface of the cleaning agent charging portion is set so that the passage cross-sectional area of the outlet that is the lowermost end portion is minimized. The charging device is set so that the ratio of the cross-sectional areas Sa, Sb, Sc, Sd is set to be Sa: Sb: Sc: Sd = 2 ± 10%: 2 ± 10%: 2 ± 10%: 1 Item 3. The washing machine according to Item 1 or 2.

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