JP3243242B2 - Washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to water supply, washing, rinsing,
In connection with a fully automatic washing machine that automatically performs processes such as dehydration,
More specifically, the present invention relates to a fully automatic washing machine having a bath water suction pump.

[0002]

2. Description of the Related Art Conventionally, the remaining hot water in a bath is used as washing water to save tap water.

As a means for supplying bath water, there is a type in which a throw-in type bath water suction pump is put in a bath tub, and water in the bath tub is fed into the washing tub via the pump.

As another example, there is a type in which a washing machine has a built-in bath water suction pump and supplies water in a bathtub to the washing tub via the pump. The pump used in this case is, of course, a self-priming type pump. The priming method is such that when the first priming is performed, the priming is not returned to the suction side of the pump by a check valve built into the pump.

[0005] A prior art for incorporating a bath water suction pump into a washing machine and sending water in a bath tub into the washing tub via this pump is disclosed in, for example, JP-A-57-117894.
JP-A-57-117895 and JP-A-6-23190 can be cited.

[0006]

However, when a bath water suction pump of a throw-in type is used, there is a drawback in that the hose and the lead wire are entangled with each other, and both workability and storage are poor.

On the other hand, the type in which a bath water suction pump is built in a washing machine generally has a pump installed below the washing machine, which requires not only a priming tank but also a lower portion of the washing machine. The length of the pipe from the pump to the opening of the washing tub becomes longer, which causes an increase in cost. Regarding priming, if the check valve is not properly assembled or dirt or hair gets caught in the check valve, the priming flows back through the water suction hose due to the siphon phenomenon, and every time the water suction pump is used, It becomes necessary to perform priming.

In the above-mentioned JP-A-57-117894 and JP-A-57-117895, a washing machine with a bath water suction pump which does not require a priming tank is proposed. Even so, the pump is provided below the washing machine.

A washing machine with a bath water suction pump which does not require a priming tank is also proposed in the above-mentioned Japanese Patent Application Laid-Open No. Hei 6-23190.

[0010] However, the publication only discloses a very simplified diagram, and there is no specific description in which part of the washing machine the pump is incorporated. It is not known at all whether the pump is installed below the washing machine or at any other place, as in the above two known examples, and it is not clear whether the pump is installed below the washing machine. Is not disclosed at all. Also, there is no disclosure of a specific system for priming.

The present invention provides a bath which does not require a priming tank.
It is an object of the present invention to provide a fully automatic washing machine with a bath water suction pump that can incorporate a water suction pump in the upper rear portion of the washing machine and that is easy to use.

A washing tub having stirring blades, a washing motor arranged below the washing tub, a top cover arranged above the washing tub, a bath water suction pump for sucking bath water through a suction hose; and a water feed water solenoid valve, the tap water supply solenoid valve and the bath water intake pump disposed in part on the person after the top cover, water inlet tap water or bath water from above the washing tub A washing machine that supplies water into a washing tub through the washing motor to rotate and drive the agitating blades and the washing tub by the washing motor to perform washing, rinsing, and dewatering.The bath water suction pump includes a pump runner. A pump driving motor that is driven to rotate, a discharge chamber that also serves as a gas / water separation function that communicates with the discharge side of the pump runner, a suction chamber that communicates with the suction side of the pump runner, and a water absorption that also serves as a connection port for a bath water suction hose. Having a configuration such that the bath water absorbed from the water inlet by the rotational drive of the pump runner is discharged from the discharge port through the suction chamber, the runner chamber, and the discharge chamber, and the water inlet is connected to a hose connection port. A back panel, which is formed integrally with the suction chamber so as to face upward and covers the bath water suction pump and the tap water supply solenoid valve behind the top cover, is attached.The upper end of the hose connection port of the water suction port is attached. A bath water suction hose which penetrates the back panel and has an L-shaped end, and the L-shaped end of which is detachably connected to the water inlet through a О-ring is provided. Things.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to one embodiment of the drawings. In FIG. 1, reference numeral 1 denotes a top cover of a washing machine, 2 denotes a controller for controlling operation of the washing machine, and 2 Is built in the front of the top cover 1 and includes a microcomputer having a timer function.

Reference numeral 3 denotes a membrane switch that allows the operator to externally specify the operation of the washing machine.

Reference numeral 4 denotes a lid which covers the laundry input port 6 which is largely opened at the center of the top cover, and which opens upward with the fulcrum 5 as an axis.

Reference numeral 7 denotes a cover for preventing the laundry from falling between the washing and dewatering tub (hereinafter simply referred to as a washing tub) 8 and the outer tub 9, and is provided on the upper portion of the outer tub 9.

Reference numeral 10 denotes a dehydration hole formed in the wall of the washing tub 8.

Reference numeral 11 denotes a balance ring fixed to the upper end of the washing tub 8 for reducing the amplitude of vibration generated in the washing tub 8 during the spin-drying operation.

The outer tub 9 is suspended above the outer frame 21 by a suspension rod 12 and elastically supports the outer tub 9 by inserting a spring 13 therebetween.

Numeral 14 denotes a stirring blade, which is rotatably installed at the center of the bottom of the washing tub 8, and rotates and reverses in a short time cycle during washing and rinsing.

Reference numeral 15 denotes a motor. The power of the motor 15 is transmitted via a motor pulley 16, a belt 17, a driven pulley 18, and a clutch / reduction unit 19 to the stirring blade 14 during washing and rinsing.
During the dehydration, the washing tub 8 and the stirring blade 14 are driven together.

Reference numeral 20 denotes a leg for supporting the outer frame 21, and reference numeral 22 denotes a drain hole provided in the bottom of the outer tub 9. Downstream of the drain hole 22, a drain solenoid valve 2 that opens and closes according to a command from the controller 2 is provided.
3 and a drain hose 24.

Reference numeral 25 denotes a back panel, which incorporates a bath water suction pump 26 and a water supply solenoid valve 31, which will be described later.

Reference numeral 26 denotes a bath water suction pump whose casing is formed of a synthetic resin containing an antibacterial agent, and is incorporated in the back panel 25 of the top cover 1.

27 is a bath water absorption hose containing an antibacterial agent,
The connection end is detachably attached to a bath water inlet 26 a provided on the upper surface of the pump 26 via an O-ring 28.

FIG. 2 is a view showing the internal structure with the back panel 25 removed, wherein 1a is a water inlet for supplying tap water into the washing tub and a water inlet for bath water provided on the top cover 1. The tap water inlet and the bath water inlet 1a are also used, and a softener is also supplied from the tap water inlet and the bath water inlet 1a.

The bath water suction pump 26 is provided with a bath water suction port 2.
6a and a bath water discharge pipe 26b. In the back panel 25, a lid switch 29 and a water supply electromagnetic valve 31 are further incorporated, and the water supply electromagnetic valve 31 is provided integrally with a tap water receiving port 30 that is connected to a tap water faucet by a hose.

Reference numeral 33 denotes a priming water supply port, and 34 denotes a water supply solenoid valve 3.
This is a priming hose that supplies a part of the tap water discharged from 1 to the bath water suction pump as priming water.

FIG. 4 shows a vertical section of the bath water suction pump 26.
In the figure, reference numeral 40 denotes a casing integrally formed of a synthetic resin, comprising a pump casing part for housing a pump runner, a motor holding part for housing a motor, and a coupling housing part in which a pump and a motor are formed. I have.
Further, the casing 40 integrally includes a cooling water passage 40e, a water drain hole 40f for discharging water leakage from the mechanical seal, steam drain holes 40g and 40h, and a discharge chamber 40i.

Reference numeral 41 denotes a casing cover to be combined with the casing 40. The casing cover is integrally formed with a suction chamber forming wall 41c, a suction chamber 41d, and the like.

Reference numeral 42 denotes a runner of the pump, which is fixed to an end of a runner shaft 49.

43 is a pump motor whose shaft 43a
Is connected to a runner shaft 49 via a coupling 45 made of an insulating material. 46 is a check valve provided in the casing cover suction chamber 41d to prevent water in the pump from flowing out to the suction side.

A partition plate 44 is interposed between the casing 40 and the casing cover 41. This partition plate separates the runner chamber and the suction chamber 41d.
The two chambers communicate with each other by a suction hole opened corresponding to the water inlet of No. 2.

Numeral 47 denotes a packing for keeping the joint surface between the casing 40 and the casing cover 41 secure. Numeral 48 is a mechanical seal for keeping the pump chamber and the coupling chamber watertight.

FIG. 5 is a front view in which the casing cover 41 and the partition plate 44 are removed.
The upper volute 40a1 and the lower volute 40a2 formed integrally with the outer wall 0 have separation walls 40b1 and 40b2 protruding in the direction of the runner 42, and a return water hole 40c1 communicating between the inside and outside of the volute adjacent to the separation wall in the runner rotation direction.
And 40c2. At the upper end of the lower volute 40a2, a bubble prevention rib 40d extending in the horizontal direction is provided.

Outside the upper and lower volutes, a discharge chamber 40 is provided.
This chamber has the function of a steam-water separation chamber having a large volume at the top.

A part of the steam separator bulges in the direction of the motor holding portion to form the cooling water passage 40e described above.

FIG. 6 is a cross-sectional view taken along the line YY of FIG. 5, in which a discharge port 41a to which the discharge pipe 26b is connected integrally with the casing cover 41 and a priming port 41b to which the priming hose 34 is connected are formed. Have been.

When the power switch is turned on and the bath water course start button is pressed, the water supply solenoid valve 31 is energized for 15 seconds to supply tap water. The water flowing from the tap water discharge port hits the wall of the priming supply port 33, and a part of the tap water is supplied as priming water from the priming port 41 b of the casing cover 41 through the priming hose 34 into the pump.
After 15 seconds have elapsed, the power supply to the water supply electromagnetic valve 31 is stopped, and the pump 26 is started.

When the motor 43 rotates, the runner 42 rotates in the P direction via the motor shaft 43, the coupling 45, and the runner shaft 49. Due to the rotation of the runner 42, the suction chamber 41d has a negative pressure, sucks air in the water suction hose 27 connected to the water suction port 26a, and sucks and discharges air.
Bath water is absorbed while discharging from 0i. At this time, the air sucked into the runner 42 has a structure in which air and water are separated in a short time by the effects of the separation wall 40b1, the separation wall 40b2, the return water hole 40c1, the return water hole 40c2, and the bubble prevention rib 40d. . Further, the absorbed bath water circulates through the cooling water passage 40e to cool the motor and absorb the noise of the motor. Suction chamber 41d and discharge chamber 40i
Rib 44a of the partition plate 44 for separating the casing 4
The first suction chamber forming wall 41c is attached in a labyrinth structure. Also, the runner tip 42a and the partition plate 44
Of the runner 42 and the flat portion 42
The gap between b and the partition plate 44 is set to 0.6 to 1.3 mm. The absorbed bath water is sent to the discharge chamber 40i via the runner 42 by the same water supply method as that of a conventional pump of this type, and the bath water sent to the discharge chamber 40i is thereafter transferred via the bath water discharge pipe 26b. And supplied into the washing tub 8.

[0041]

According to the present invention, a priming tank is not required.
Bath water suction pump can be built in the upper rear of the washing machine,
Moreover, it is possible to provide a washing machine equipped with the bath water intake pump usability is not good.

[Brief description of the drawings]

FIG. 1 is an overall internal structure explanatory view showing one embodiment of a fully automatic washing machine of the present invention.

FIG. 2 is a plan view showing the internal structure of the vehicle with a back panel removed.

FIG. 3 is a sectional view taken along line XX of FIG. 2;

FIG. 4 is a longitudinal sectional view showing an internal structure of a bath water suction pump.

FIG. 5 is a front view showing the inside of the pump after removing a casing cover and a partition plate.

FIG. 6 is a sectional view taken along the line YY of FIG. 5;

[Explanation of symbols]

1 ... Top cover, 8 ... Washing tub (washing and dewatering tub), 25
... back panel, 26 ... bath water suction pump, 31 ... water supply solenoid valve, 33 ... priming water supply port, 34 ... priming hose.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akira Miyao 1-1-1 Higashitaga-cho, Hitachi City, Ibaraki Prefecture Inside the Taga Headquarters, Electrical Appliances Division, Hitachi, Ltd. 1-1-1, Hitachi, Ltd.Electrical Equipment Division, Taga Headquarters (72) Inventor Takami Koyama 1-1-1, Higashitagacho, Hitachi City, Ibaraki Prefecture Hitachi, Ltd.Electrical Equipment Division, Taga Headquarters (72) Inventor Isao Hiyama 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Pref. Taga Headquarters, Electric Appliances Division, Hitachi, Ltd. (56) References JP-A-8-66588 (JP, A) JP-A-6-238089 ( JP, A) JP-A-57-192595 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06F 39/08 301 D06F 39/08 321

Claims (1)

(57) [Claims] 1. A washing tub having stirring blades, a washing motor arranged below the washing tub, a top cover arranged above the washing tub, and a bath water suction pump for sucking bath water through a suction hose. , and a tap water supply solenoid valve, and placing the solenoid valve and the bath water intake pump for tap water supply to parts on towards after the top cover, the tap water or the bath water from the upper side of the washing tub A washing machine that supplies water into a washing tub through a water inlet, and performs washing, rinsing, and dehydration by rotating the stirring blades and the washing tub with the washing motor, and the bath water suction pump is a pump. A pump driving motor for rotating and driving the runner, a discharge chamber also serving as a gas / water separation function communicating with the discharge side of the pump runner, a suction chamber communicating with the suction side of the pump runner, and a suction port also serving as a connection port for bath water suction hose. Having a mouth, and configured to discharge bath water from the water suction port through the suction chamber, the runner chamber, and the discharge chamber from the discharge port through rotation of the pump runner, wherein the water suction port is a hose connection port. The back panel is formed integrally with the suction chamber with the top facing upward, and a back panel that covers and hides the bath water suction pump and the tap water supply electromagnetic valve is mounted on the rear side of the top cover.
Bath water absorption in which the upper end of the hose connection port of the water intake port penetrates the back panel, and the end has an L-shape, and the L-shaped end portion can be detachably connected to the water intake port via a ring. A washing machine comprising a hose.