JPH1024194A - Pump for washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce noise, improve durability and downsize by making a runner revolve at a low speed with a motor using a permanent magnet rotor in a pump for a washing machine which can store priming water in a pump case and autosuck from a water inlet provided in the pump case. SOLUTION: Priming water can be stored in a pump case 13 and a runner casing 14 in which a volute chamber 15 which communicates with a water inlet 22 is formed, is provided, and a runner 18 provided in the runner casing 14 in rotatable manner is driven with a motor 19 in a counterclockwise and clockwise rotatable manner. The runner casing 14 has an outlet which discharges a mixture of priming water and air from a water inlet 22, and a volute chamber 15 nearly symmetrical to the center of the outlet and the runner 18 is formed, by the clockwise or counterclockwise rotation of the runner 18, priming water and air from the water inlet 22 are mixed, and separated into water and air in the pump case for autosuction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump device such as a washing machine which stores priming water in a pump case and is capable of self-priming from a water inlet provided in the pump case.

[0002]

2. Description of the Related Art Conventionally, this kind of pump device has been configured as shown in FIGS. Hereinafter, the configuration will be described.

[0003] As shown in the figure, a pump case 1 is provided with two volutes 2 to form a vortex chamber 3, and a discharge part 4 is communicated with a steam-water separation chamber 5. A runner 6 is rotatably provided inside the vortex chamber 3, and the runner 6 is driven by an electric motor 7. A hole 8 is provided in the volute 2 for return water communicating between the inside and the outside of the volute 2. The water inlet 9 is connected to a hose (not shown) or the like, and sucks bath water or the like, and communicates with the vortex chamber 3 via a check valve 10. Discharge port 11
Communicates with the air / water separation chamber 5, discharges the air separated in the priming step and discharges the water sucked into the vortex chamber 3 from the water inlet 9 in the pumping step. The priming port 12 supplies priming water into the pump case 1.

The operation of the above construction will be described. The tip of a hose connected to the water suction port 9 is put into bath water in a bathtub (not shown), and after the priming water is supplied from the priming port 12 into the pump case 1, When the runner 6 is driven by the electric motor 7, the rotation of the runner 6 causes the air in the hose and the priming water in the pump case 1 to be sucked into the vortex chamber 3 and mixed with air and water. It is discharged from.

[0005] The bubbles are separated from the water as they ascend in the water / water separation chamber 5 and are discharged from the discharge port 11. The water from which the bubbles have been separated is circulated through the holes 8 into the vortex chamber 3. In this way, the air in the hose is sequentially discharged, and when the air in the hose is exhausted, bath water or the like is sucked through the hose and discharged from the discharge port 11.

[0006]

In such a conventional structure, the runner 6 rotates in one direction to cause self-absorption, but the rotation speed of the runner 6 is 8000 to 100.
By setting the speed to 00 r / min, the pump characteristics are secured, and a high-speed rotating motor 7 must be used. In particular, the noise is extremely high in a typical commutator motor.
Furthermore, there was a drawback that the brush abrasion was limited and the durability was poor. In addition, they have problems that are practically inconvenient, such as high electrical noise and the presence of a noise prevention device.

In order to rotate the runner 6 at high speed,
Bubbles mixed in the vortex chamber 3 during the priming process were too fine, and had a problem that the water / water separation power was low and the lift characteristics were low. Furthermore, a vortex chamber 3 provided with two volutes 2
Has a problem that the shape is complicated and the shape becomes large.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, in which a runner is rotated at a low speed by a motor using a permanent magnet rotor to reduce noise, improve durability, and reduce the size of a washing machine body and the like. It is intended to be easily mounted inside.

[0009]

According to the present invention, in order to achieve the above object, a pump case is provided with a runner casing capable of storing priming water and having a swirl chamber communicating with a water suction port in the pump case. A runner is rotatably provided in the runner casing, and the runner is driven to rotate left and right by an electric motor. The runner casing has a discharge portion that discharges air and water that mixes priming water and air from the water suction port, forms a vortex chamber having a substantially symmetrical shape with respect to the discharge portion and the center of the runner, and is provided on either side of the runner. By the rotation, the priming water in the pump case and the air from the water suction port are mixed with air and water, and the air and water are separated in the pump case and self-absorbed.

Thus, the runner can be rotated left and right at a low speed by the electric motor using the permanent magnet rotor to reduce the noise, and the durability can be improved. It can be easily mounted.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a pump case capable of storing priming water, a runner casing provided in the pump case and forming a vortex chamber communicating with a water suction port, and the runner A runner rotatably provided in a casing, and an electric motor for driving the runner rotatably to the left and right are provided, and the runner casing has a discharge unit that discharges air and water mixed with priming water and air from a water suction port. Forming a vortex chamber having a substantially symmetrical shape with respect to the center of the discharge portion and the runner, and mixing the priming water in the pump case with air from the water suction port by air-water mixing by rotating the runner left or right. It is designed to separate water and water in the pump case and absorb water by itself.In general, the rotation direction of a motor using a permanent magnet for the rotor is not determined at startup, but such a motor is used. Even if the runner is rotated in either direction, the priming water in the pump case and the air from the water suction port can be mixed with air and water in the swirl chamber. be able to.
Also, by using a motor with a permanent magnet rotor as the motor, the runner rotates at low speed to reduce noise,
The durability can be improved, and the size can be reduced and easily installed inside the washing machine body or the like.

According to a second aspect of the present invention, in the first aspect of the present invention, a check valve for preventing backflow to the water intake port is provided between the water intake port and the runner casing; A rectification guide that guides water to the runner and rectifies the water.A check valve prevents backflow of air when the rotation of the runner stops in the priming process and water when the rotation of the runner stops in the pumping process. Backflow can be prevented, and the rotation of the runner allows air or water from the water suction port to be efficiently sucked into the swirl chamber.

According to a third aspect of the present invention, in the second aspect of the present invention, the rectifying guide has a cylindrical rectifying cylinder portion, and is provided between an outer periphery of an end of the rectifying cylinder portion and the runner casing. A ring-shaped air-water through-hole is provided, and in the priming process, the air from the water-intake port is sucked into the vortex chamber as a laminar flow by the rectifying cylinder portion by the rotation of the runner, and the air-flow is formed by the air flow. The priming water can be efficiently sucked from the through hole, and the priming water in the pump case and the air from the water suction port can be mixed with air and water in the swirl chamber, so that the air / water capacity can be increased.

According to a fourth aspect of the present invention, in the second aspect of the invention, the rectifying guide communicates with the water intake without leaking, and the entire pumping from the water intake through rotation of the runner. Water is absorbed, so that the water absorbing power from the water inlet can be increased, and the lifting capacity can be increased.

According to a fifth aspect of the present invention, in the first aspect of the invention, the runner uses a centrifugal fan and the suction direction side is an open blade, and the opposite suction direction side is smaller than the outer diameter of the blade. The shroud is a semimicros type, and the ability to mix the priming water and air in the vortex chamber to form a foam, that is, the air-water capacity is reduced by a low rotation speed of the runner (3000 to 3600 r / min).
It is possible to exhibit high efficiency and to maximize the air-water capacity, so that the self-priming power can be improved.

According to a sixth aspect of the present invention, in the first aspect of the present invention, a through hole is provided in a lowermost portion of the runner casing, and priming water is supplied from the lowermost portion in the runner casing during rotation of the runner. Replenishment can increase air-water capacity.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the pump case includes a priming port for injecting priming water and a discharge port for discharging water absorbed from the water inlet. The position of the port and the discharge port is higher than the runner casing, and the lowermost surfaces of the priming port and the discharge port are substantially the same plane. The pump head capacity can be increased, and the size of the pump case can be made compact.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) As shown in FIGS. 1 and 2, a pump case 13 is capable of storing priming water, is provided with a runner casing 14, forms a vortex chamber 15, and has a discharge portion 16 for separating water and water. It communicates with the chamber 17. A runner 18 is rotatably provided inside the vortex chamber 15, and the runner 18 is driven by an electric motor 19. The electric motor 19 includes a rotor 20
Is composed of a permanent magnet, and a commercial power supply is connected to the winding 21 so that the frequency of the commercial power supply is 3000 r / min.
Or it rotates at 3600 r / min.

The runner casing 14 forms a vortex chamber 15 having a substantially symmetrical shape with respect to the center of the discharge section 16 and the center of the runner 18. Is mixed with air and water, and the air and water are separated in a water and water separation chamber 17 in the pump case 13 so as to absorb water.

The water suction port 22 is connected to a hose or the like and sucks in bath water or the like. The check valve 23 for preventing backflow of air or water to the water suction port 22 and a vortex chamber via a rectifying guide 24 are provided. 15. The rectifying guide 24 is for guiding and rectifying air or water from the water inlet 22 to the runner 18, has a cylindrical rectifying cylinder 25, and is provided between the outer periphery of the end of the rectifying cylinder 25 and the runner casing 14. A ring-shaped through hole 26 is provided. The rectifying guide 24 communicates with the water intake port 22 without leaking, and absorbs all pumped water from the water intake port 22 by rotation of the runner 18.

The discharge port 27 communicates with the air / water separation chamber 17,
In addition to discharging the air separated from water and water in the priming step, the water sucked into the vortex chamber 15 from the water inlet 22 in the pumping step is discharged. The priming port 28 supplies priming water into the pump case 13.

The pump device 29 configured as described above is
As shown in FIG. 3, a water-absorbing hose 32 attached to a washing machine outer frame 30 and provided with a water-absorbing filter 31 at the tip is connected to the water-absorbing port 22.
, And the water absorption filter 31 is placed in the bathtub 33. The water supply valve 34 supplies water to the washing and dewatering tub 37 disposed in the water receiving tub 36 through the water inlet 35 and operates for a predetermined time (approximately 20 seconds) when using bath water. At the same time as water is injected into the pump 37, the pump case 13 of the pump device 29 passes through a priming pipe 39 connected to a priming port 28 from a priming discharge port 38 provided at a water inlet 35.
The inside is filled with water. Discharge port 25
Is connected to the water injection guide 41 through the discharge pipe 40,
It is configured to inject water into the washing and dewatering tub 37 along the water injection guide 41.

A rotating blade 42 is rotatably disposed on the bottom of the washing and dewatering tub 37, and the rotating blade 42 and the washing and dewatering tub 37 are driven by a reduction gear 45 via a belt 44 by rotation of a motor 43. It is configured to perform washing and dehydration.

In the above configuration, the operation when the washing machine uses bath water will be described. First, water is supplied from the water supply valve 31 for a predetermined time and water is poured into the washing and dewatering tub 37, and at the same time, the water is filled into the pump case 13 of the pump device 29 from the priming water discharge port 38 provided at the water supply port 35 through the priming pipe 39. Supplied to the state. Immediately after that, the pump device 2
9 is rotated, and the runner 18 is rotationally driven.

The rotation of the runner 18 causes the water absorbing hose 3
The air in the vortex chamber 2 is formed as a laminar flow by the rectifying cylinder 25.
The priming water in the pump case 13 is sucked into the vortex chamber 15 by this air flow, mixed with water and water, and the water containing bubbles is discharged from the discharge unit 16. Bubbles are separated from water as it rises in the gas-water separation chamber 17 and
It is discharged from 7. The water separated from the bubbles is circulated into the vortex chamber 15 through the through hole 26.

In this way, the air in the water absorption hose 32 is sequentially discharged, and when the air in the water absorption hose 32 is exhausted, the bath water is sucked through the water absorption hose 32, discharged from the discharge port 27, and the water injection guide 41. Is poured into the washing and dewatering tub 37 along. When water is supplied to the washing / dewatering tub 37 to a predetermined water level, the rotating blades 42 are rotated by the motor 43 to wash the laundry in the washing / dewatering tub 37.

After the washing step, when the rinsing step is started, water is supplied again into the washing and dewatering tub 37. However, the air in the water absorption hose 32 is exhausted in the previous step, and even if the runner 18 is stopped, the check valve 23 is stopped. From the pump device 29 to the water-absorbing hose 3
Since the air does not enter the inside 2, the bath water can be immediately absorbed from the water absorption hose 32 and supplied to the washing and dewatering tub 37 simultaneously with the rotation of the runner 18.

Generally, in a motor using a permanent magnet for the rotor, the direction of rotation is not determined at the time of startup. However, even when the motor 19 rotates the runner 18 in either the left or right direction, the inside of the vortex chamber 15 is not changed. Thus, the priming water in the pump case 13 and the air from the water inlet 22 can be mixed with air and water, and the water can be separated in the pump case 13 and self-primed. In addition, by using a motor using a permanent magnet rotor as the motor 19, the runner 18 is rotated at a low speed to reduce noise, improve durability, and is reduced in size to be easily mounted inside a washing machine body or the like. be able to.

The water inlet 22 and the runner casing 1
By providing a check valve 23 for preventing backflow to the water intake port 22 between the pump and the pump 4, the backflow of air can be prevented when the rotation of the runner 18 is stopped in the priming process. When the rotation of 18 stops, backflow of water can be prevented. Further, a rectifying guide 24 for guiding and rectifying air or water from the water inlet 22 to the runner 18.
Is provided, the air or water from the water suction port 22 can be efficiently sucked into the vortex chamber 15 by the rotation of the runner 18, and the air in the water suction hose 32 can be sucked in a short time and self-absorbed. it can.

Further, by providing the ring-shaped through-hole 26 between the outer periphery of the end of the rectifying cylinder portion 25 of the rectifying guide 24 and the runner casing 14, in the priming process, the rotation of the runner 18 causes the water from the water inlet 22 to rotate. Rectifying cylinder 2
5, the priming water is sucked into the vortex chamber 15 as a laminar flow, and the priming water can be efficiently sucked from the ring-shaped through-hole 26 by this air flow. Of air can be mixed with water.

The rectifying guide 24 communicates with the water intake port 22 without leaking, and absorbs all the pumped water from the water intake port 22 by rotation of the runner 18, thereby increasing the water absorbing power from the water intake port 22. And the lifting capacity can be increased.

Further, as shown in FIG. 2, by providing a through hole 46 at the bottom of the runner casing 14,
Priming water can be supplied from the bottom of the runner casing 14 while the runner 18 is rotating, so that the air-water capacity can be increased.

(Embodiment 2) As shown in FIG. 4, the runner 18 uses a centrifugal fan, the suction side Y is an open blade 47, and the counter suction side is smaller than the outer diameter of the blade 47. A shroud 48 is formed. That is,
The blade tip 47a of the blade 47 projects from the outer periphery of the shroud 48 to be of a semi-micros type. Other configurations are the same as those in the first embodiment.

The operation of the self-priming water pump device will be described in detail. The runner in the self-priming pump device is generally a closed type in which a shroud is provided on both sides. The number of revolutions of the runner 18 is set at a low speed (3000-3600 r
/ Min), the self-priming force can be improved because the air-water capacity can be maximized.

(Embodiment 3) As shown in FIG. 3, the positions of the priming port 28 and the discharge port 27 provided in the pump case 13 are
Above the runner casing 14 and the priming port 2
8 and the lowermost surface of the discharge port 27 are substantially the same. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. In the priming step, the rotation of the runner 18 sucks air from the water suction port 22 into the vortex chamber 15, and the priming water in the pump case 13 and the water suction port 22 in the vortex chamber 15. Is mixed with air and water, and water containing air bubbles is discharged from the discharge unit 16. Bubbles are separated from water as it moves up in the gas-water separation chamber 17 and are discharged from the discharge port 27. At this time, the priming capacity in the pump case 13 can be maximally utilized, the water absorption power is increased and the head capacity is increased, and the size of the pump case is reduced in the limited water absorption capacity and the head capacity. It can be compact.

In the above embodiment, the pump device 29 is attached to the washing machine to supply the bath water. However, the pump device 29 is used as a water supply means for water-using equipment other than the washing machine. it can.

[0039]

As described above, according to the first aspect of the present invention, a pump case capable of storing priming water and a runner casing provided in the pump case and forming a vortex chamber communicating with a water suction port. A runner rotatably provided in the runner casing, and an electric motor for driving the runner rotatably to the left and right, wherein the runner casing discharges air and water mixed with priming water and air from a water suction port. A swirl chamber having a substantially symmetrical shape with respect to the center of the discharger and the runner, and by rotating the runner left or right, the priming water in the pump case and the air from the water suction port are blown by air and water. The runner is rotated in either the left or right direction by an electric motor whose rotation direction is not determined at the time of start because the water is mixed and self-absorbed by separating water and water in the pump case. Also, the air from the priming and water intake of the pump casing in the vortex chamber can be mixed steam-water, it can be self-water separated steam in the pump casing.
Also, by using a motor with a permanent magnet rotor as the motor, the runner rotates at low speed to reduce noise,
The durability can be improved, and the size can be reduced and easily installed inside the washing machine body or the like.

According to the second aspect of the present invention, a check valve is provided between the water intake port and the runner casing to prevent backflow to the water intake port, and the air or water from the water intake port is guided to the runner and rectified. A check valve prevents the backflow of air when the rotation of the runner stops in the priming process, and prevents the backflow of water when the rotation of the runner stops in the pumping process. In addition, by providing the rectifying guide, air or water from the water suction port can be efficiently sucked into the swirl chamber by the rotation of the runner, and the air in the water suction hose can be sucked in a short time and self-absorbed. it can.

According to the third aspect of the present invention, the rectifying guide has a cylindrical rectifying cylinder, and a ring-shaped air-water passage is provided between an outer periphery of an end of the rectifying cylinder and the runner casing. Since the mouth is provided, in the priming process, the air from the water suction port is sucked into the vortex chamber as a laminar flow by the flow straightening part by the rotation of the runner, and the priming is efficiently sucked from the ring-shaped air-water through-hole by this air flow. The priming water in the pump case and the air from the water suction port can be mixed with air and water in the vortex chamber.

According to the fourth aspect of the present invention, the rectifying guide communicates with the water intake without leaking, and absorbs all pumped water from the water intake by rotation of the runner. Thus, the water absorbing power from the water inlet can be increased, and the lifting capacity can be increased.

According to the fifth aspect of the present invention, the runner uses a centrifugal fan, and the suction direction side is an open blade, and the counter suction side is a semi-micros having a shroud smaller than the outer diameter of the blade. Because of the type, the ability to mix the priming water and the air in the vortex chamber to form a foam, that is, the air / water capacity, is reduced by the low rotation speed of the runner (3000).
(Up to 3600 r / min), and the air-water capacity can be maximized, so that the self-priming power can be improved.

According to the sixth aspect of the present invention, the through hole is provided in the lowermost portion of the runner casing, so that the priming is replenished from the lowermost portion in the runner casing while the runner is rotating, thereby enhancing the water and water capacity. be able to.

According to the invention, the pump case is provided with a priming port for injecting priming water and a discharge port for discharging water absorbed from the water intake port, and the positions of the priming port and the discharge port are provided. Is located above the runner casing, and the lowermost surfaces of the priming port and the discharge port are substantially flush with each other, so that the priming capacity in the pump case is maximized, the water absorbing power is increased and the pumping capacity is increased. The size of the case can be made compact.

[Brief description of the drawings]

FIG. 1 is a sectional view of a pump device of a washing machine or the like according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway side view of the pump device of the washing machine and the like.

FIG. 3 is a sectional view of a washing machine provided with a pump device such as the washing machine.

FIG. 4 is a perspective view of a runner of a pump device such as a washing machine according to a second embodiment of the present invention.

FIG. 5 is a sectional view of a conventional pump device of a washing machine or the like.

FIG. 6 is a partially cutaway side view of the pump device of the washing machine and the like.

[Explanation of symbols]

 13 pump case 14 runner casing 15 vortex chamber 16 discharge section 18 runner 19 motor 22 water intake

Claims (7)

[Claims] 1. A pump case capable of storing priming water, a runner casing provided in the pump case and forming a vortex chamber communicating with a water intake, a runner rotatably provided in the runner casing, and the runner. An electric motor that can be driven to rotate left and right, and the runner casing has a discharge section that discharges air / water that mixes air from a priming water and a water suction port, and has a substantially symmetric shape with respect to the center of the discharge section and the runner. A vortex chamber is formed, and the priming water in the pump case and the air from the water suction port are mixed with air and water by rotation of the runner left or right, and the water is separated and self-absorbed in the pump case. Pumping equipment such as washing machines. 2. Between the water inlet and the runner casing,
The pump device for a washing machine or the like according to claim 1, further comprising a check valve for preventing backflow to the water suction port, and a rectification guide for guiding and rectifying air or water from the water suction port to the runner. 3. The washing machine according to claim 2, wherein the rectifying guide has a cylindrical rectifying cylinder portion, and a ring-shaped air-water through hole is provided between an outer periphery of an end of the rectifying cylinder portion and the runner casing. Etc pump equipment. 4. The pump device for a washing machine or the like according to claim 2, wherein the rectifying guide communicates with the water suction port without leaking to the other, and absorbs all pumped water from the water suction port by rotation of the runner. 5. The washing machine according to claim 1, wherein the runner uses a centrifugal fan, and the suction direction side is an open blade, and the counter suction side is a semimicros type having a shroud smaller than the outer diameter of the blade. Pumping equipment. 6. The pump device for a washing machine or the like according to claim 1, wherein a through hole is provided in a lowermost portion of the runner casing. 7. A pump case, comprising: a priming port for injecting priming water; and a discharge port for discharging water absorbed from the water intake port. The positions of the priming port and the discharge port are higher than a runner casing, and the priming water is provided. The pump device for a washing machine or the like according to claim 1, wherein the lowermost surfaces of the mouth and the discharge port are substantially the same.