KR101690079B1 - Pump - Google Patents

Abstract

The present invention relates to a pump for use in a washing machine, a dishwasher, and the like. The pump includes first and second outflow portions through which fluid flows, and the first and second outflow portions And a first opening / closing ball is provided on the opening / closing plate. When a fluid flows into the first outlet, the first opening / closing ball is positioned above the opening / closing plate closing the second outlet, The present invention relates to a bi-directional pump of a transfer-discharge type in which an opening / closing ball is able to control the flow of fluid more completely by closing and closing the first or second discharge port.

Description

PUMP "

The present invention relates to a pump for use in a washing machine, a dishwasher, and the like. The pump includes first and second outflow portions through which fluid flows, and the first and second outflow portions And a first opening / closing ball is provided on the opening / closing plate. When a fluid flows into the first outlet, the first opening / closing ball is positioned above the opening / closing plate closing the second outlet, The present invention relates to a bi-directional pump of a transfer-discharge type in which an opening / closing ball is able to control the flow of fluid more completely by closing and closing the first or second discharge port.

Generally, a washing machine or dishwasher requires a water pump to recirculate the wash water or to discharge it to the outside. Generally, a circulation pump is used to circulate washing water or rinse water, and a drain pump is used to discharge wash water and rinse water.

 In such a conventional structure, since the circulation pump and the drain pump are installed separately, the cost is raised, and further additional space for installing the internal piping is required, which makes it difficult to miniaturize the washing machine. Recently, to overcome this difficulty, a technology has been proposed in which an electronic three-way valve is installed on a pump discharge line with one pump to selectively connect the discharge line according to the circulation mode and the drainage mode . Figure 2 shows the construction of a washing machine with a combination of three-way valve and pump. However, since such an electronic three-way valve is expensive, it is difficult to expect a great result in terms of cost reduction.

Therefore, a bidirectional discharge pump has been variously proposed to solve such a problem.

Such conventional technology is disclosed in Korean Utility Model Registration No. 20-0170590 entitled " Bi-directional pump of dishwasher &

The above-mentioned prior art is provided with a housing, a housing and a housing having a first outlet and a second outlet to the lower and upper ends of the housing, respectively, so as to improve the reliability of the pump by performing smooth operation of the opening and closing member for performing opening and closing operations of the outlet by the pumping action An impeller which is formed so as to communicate with the inside of the housing and has a packing at the inlet side of the first outlet and the second outlet and a rotary vane at the other side of the housing; A bidirectional pump of the dishwasher is constituted by a partition wall in which a first flow path and a second flow path are formed and an opening and closing member which selectively opens and closes the first and second outlets in accordance with the rotating direction of the impeller.

In addition, there is a conventional over-pressure discharge structure in the case of closing a heating pipe of a gas boiler using a bidirectional circulation pump,

In the prior art, a bypass hole is formed in one side of the discharge pipe between the two open / close holes formed in the discharge pipe of the bidirectional circulation pump, and a bypass pipe is connected between the bypass hole and the heat recovery pipe. .

Furthermore, there is another prior art registration utility model No. 20-0154843 " Dishwasher bidirectional pump leak prevention device "

The prior art is characterized in that the sealing ball of a rubber material having a predetermined buffering force is provided to smoothly move the water supply port and the discharge port by the water pressure of the washing water supplied by the impeller and to close the water supply port and the discharge port, And a cushioning portion which is tightly fitted to the outlet side so that the sealing ball can be closely grounded while being finely buffered due to the pressure of the sealing ball moved by the washing water.

However, the above-mentioned prior arts relate to a bidirectional pump using a sealed ball, in which the sealed ball moves by the flow of fluid to open or close the discharge port, and when the sealed ball moves by the flow of the fluid and opens and closes, The fluid can leak through the gap between the ball and the discharge port, and when the flow of the fluid is weak, the sealed ball may not be brought into close contact with the discharge port.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a ball valve control apparatus and a ball valve control method for controlling rotation direction and speed of a pump impeller using a BLDC motor capable of forward and reverse bi- The present invention relates to a bidirectional pump.

Further, since the opening and closing plate is provided in the first and second outlet portions through which the fluid flows out to the discharge port, the opening and closing plate can selectively close the outlet, so that the opening and closing ball is used more stably and completely And the first opening / closing ball is provided on the opening / closing plate, and the opening / closing plate is located above the opening / closing plate on the side of the outlet which closes by the flow of the fluid, thereby closing the outlet and closing the outlet. The purpose.

And a pair of second openable and closable balls provided respectively in the first and second discharge openings through which the fluid is discharged to close the outlet and the discharge opening by the first openable ball and the second openable ball, Another object of the present invention is to provide a bidirectional pump that prevents leaks.

In order to accomplish the above object, the bidirectional pump of the transfer type according to the present invention comprises:

A main body including an inlet through which the fluid flows and first and second outlets through which the introduced fluid is discharged;

Flow out means connected to the inlet and having first and second outflow portions connected to the first and second outlets in one direction, and having an impeller;

Closing means for opening / closing the first and second outflow portions, and opening / closing means provided on the opening / closing plate and including a first opening / closing ball for pressing the opening / closing plate and closing the first or second outlet;

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The open /

A first opening and closing part for opening and closing the first outlet part, and a second opening and closing part hinged to the first opening and closing part for opening and closing the second outlet part,

Closing the first outlet when the first opening / closing ball is located above the first opening / closing part, and closing the second outlet when the first opening / closing ball is located above the second opening / closing part.

The bidirectional pump according to the present invention is a bidirectional pump according to the present invention. The bidirectional pump according to the present invention includes an inlet and an outlet for connecting the inlet and the outlet to a main body having an inlet and an outlet for the fluid and first and second discharge ports, And the flow of the fluid can be controlled by selectively opening or closing the outlet according to the flow of the fluid. By the flow control, the first opening / closing ball provided on the opening / closing plate closes the first outlet or the second outlet It is natural to choose the bidirectional flow to flow the fluid, so there is no need for a separate electrical structure, which simplifies the structure, reduces the risk of failure, and is effective in cost reduction.

In addition, the first and second discharge ports may further include a second opening / closing ball, so that the first opening / closing ball and the second opening / closing ball can be closed together in both directions of the first discharge opening or the second discharge opening, Can be prevented from being lost.

In addition, the second opening / closing ball is smaller in diameter than the first opening / closing ball and can be moved more easily in the discharge port, so that the discharge port can be easily opened and closed by the flow of the fluid. In particular, It is easy to prevent the pump from being completely blocked, thereby improving the reliability of the pump.

1 and 2 show a bidirectional pump according to a first embodiment of a bidirectional pump according to the present invention
Figs. 3 and 4 are views showing a second embodiment of a bi-directional pump of a bidirectional delivery type according to the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

The bidirectional pump according to the present invention includes a main body 10 having an inlet (not shown) and a discharge port, and outlet means 20 (21, 23, 25) connected to the inlet to discharge the fluid to the outlet .

More specifically, the main body 10 is provided with an inlet through which fluid flows, and a first outlet 13 and a second outlet 15 through which the fluid moved from the inlet are discharged in different directions . The first and second outflow ports 21 and 21 connected to the first and second outlets 13 and 15 are connected to the first and second outlets 13 and 15, And an outlet means 20 in which an impeller 25 for controlling the flow of the fluid is embedded.

1 and 2, the main body 10 is provided with outflow means 20, and the outflow means 20 is provided with the impeller and the impeller, A motor is provided. Also, the fluid is drawn through the inlet and selected by the first and second outflow portions (21) and (23) provided on the impeller by the rotation of the impeller. The inflow fluid is transferred to the first and second discharge ports 13 and 15 provided on both sides of the main body 10 and at this time the communication hole 15 connecting the first discharge port 13 and the second discharge port 15 The first and second outflow ports 21 and 23 are connected to the first and second discharge ports 13 and 15 so that the fluid can be discharged to the first and second discharge ports 13 and 15 naturally.

At this time, the inner diameters of the first and second discharge ports (13, 15) can be freely changed according to the purpose of use, and the scope of the right should not be limited.

Although the motor is not shown in the drawing, it is preferable to use a BLDC motor (Brushless DC motor), but it is not necessary to use a BLDC motor, and the motor should be capable of rotating in both directions.

Next, the inlet is formed in the outlet means 20, and the introduced fluid flows into the communication hole 17 by the pumping pressure formed by the impeller 25.

Further, the bidirectional pump according to the present invention is further provided with an opening / closing means 30 for selectively moving the fluid to the first discharge port 13 or the second discharge port 15 by rotation of the impeller.

The opening and closing means 30 includes an opening and closing plate 31 for opening and closing the first and second outlet portions 21 and 23 and a second opening and closing plate 31 provided on the opening and closing plate 31, And a first opening / closing ball 33 closing the first discharge port 13 or the second discharge port 15 as the communication hole 17 moves to the left and right.

1 and 2, the opening and closing plate 31 is provided in the communication hole 17 and has a first outlet portion 21 and a second outlet portion 21, (23).

The opening and closing plate 31 is connected to the first outlet portion 21 on the hinge shaft 315 provided between the first outlet portion 21 and the second outlet portion 23, The second opening and closing part 313 is hinged to the upper part of the second outlet part 23. The second opening and closing part 313 is hinge-

When the fluid flows out through the first outlet portion 21, the first opening and closing portion 311 is opened by the hydraulic pressure and the second opening and closing portion 313 is opened when the fluid flows out through the second outlet portion 23 .

Furthermore, the communication hole 17 is provided with a first opening / closing ball 33, and a first outlet 13 and a second outlet 15 are provided on both sides of the communication hole 17, A first discharge hole 131 is formed between the discharge port 13 and the communication hole 17 and a second discharge hole 151 is formed between the second discharge hole 15 and the communication hole 17. [

The opening and closing ball is formed to be larger than the diameter of the first discharge hole 131 and the second discharge hole 151 so as not to communicate the first discharge hole 131 and the second discharge hole 151, So that the first discharge hole 131 or the second discharge hole 151 can be blocked. The first opening and closing ball 33 is preferably made of an elastic material such as rubber to secure a close contact with the first opening and closing ball 131. In this case, It is preferable that the packing 135 and the second packing 155 are provided to prevent the fluid from leaking through the gap when the first opening and closing ball 33 is blocked.

As a second embodiment of the bidirectional pump according to the present invention, the second opening / closing ball 35 (351, 353) may be further provided to more effectively and stably prevent the first and second discharge ports 13, 15 ,

3 and 4, more specifically, the second opening / closing ball 35 includes a second-1 opening / closing ball 351 provided inside the first opening 13, And a second 2-2 opening and closing ball 353 provided on the inner side of the second opening and closing ball 15.

Accordingly, the second-1 opening / closing ball 351 closes the first discharging hole 131 in accordance with the flow of the fluid inside the first discharging opening 13, and the second-2 opening / closing ball 353 closes the second discharging hole 151 to prevent the water from leaking more completely by blocking both sides of the respective discharge holes together with the first opening and closing ball 33. This operation will be described in more detail below.

The second openable and closable ball 35 may have a larger diameter than the first and second discharge holes 131 and 151 like the first openable and closable ball 33. Further, It is preferable that the diameter of the ball 33 is smaller than that of the ball 33 so that the second opening and closing ball 35 can be moved by the hydraulic pressure difference described later.

The second opening / closing ball 35 is also made of rubber-like material, like the first opening / closing ball 33, so that the second opening / closing ball 35 can secure adhesion between the second opening / closing ball 35 and each of the discharging holes.

As described above, the bidirectional pump according to the present invention is configured such that the flow of the fluid can be controlled more completely through the opening / closing means 30, and this operation is performed for the first embodiment and the second embodiment This will be described in more detail with reference to the drawings.

First, FIG. 1 shows an operation in which a fluid is discharged to the first discharge port 13 in the first embodiment, and FIG. 2 shows an operation in which fluid is discharged to the second discharge port 15 in the opposite direction.

1, when the impeller 25 rotates counterclockwise, the fluid is discharged to the first outlet 21 in accordance with the rotation of the impeller 25. At this time, (311) rises and the fluid flows into the communication hole (17). At this time, the first open / close ball 33 is pushed to the left side by the flow of the fluid to close the second discharge hole 151,

2, when the impeller 25 rotates in the clockwise direction, the fluid is discharged to the second outlet 23 as the impeller 25 rotates, contrary to FIG. 1, The second opening and closing part 313 rises and the fluid flows into the communication hole 17. In this case, the first opening / closing ball 33 moves to the first opening / closing hole to block the first opening / closing hole and prevent the first opening / closing unit 311 from rising, thereby controlling the flow of the fluid.

Fig. 3 shows an operation in which the fluid is discharged to the first discharge port 13 in the second embodiment, and Fig. 4 shows an operation in which the fluid is discharged to the second discharge port 15 in the opposite direction.

3 and 4, when the impeller 25 rotates in the counterclockwise direction as shown in FIG. 3, the fluid flows from the impeller 25 to the impeller 25. In this case, The first opening and closing part 311 is lifted and the fluid flows into the communication hole 17. In this case, At this time, the first open / close ball 33 is pushed to the left by the flow of the fluid to close the second discharge hole 151, and the second-1 opening / closing ball 351 is moved to the first discharge port 13 by the pressure of the fluid, And moves to the first seating portion 133 on the inner side so that the first discharge port 13 is opened.

In this case, since the first open / close ball 33 blocks the second discharge hole 151, the pressure inside the second discharge port 15 rises and the second-second open / close ball 353 naturally flows into the second discharge hole 151 To prevent the fluid from leaking by blocking the second discharge hole 151 from the first open / close ball 33 and the second open / close ball 353 at both sides.

4, when the impeller 25 rotates in the clockwise direction, the fluid is discharged to the second outlet 23 in contradistinction to FIG. 3 in accordance with the rotation of the impeller 25, The second opening and closing part 313 rises and the fluid flows into the communication hole 17. In this case, the first open / close ball 33 moves to the first open / close hole to block the first open / close hole and prevent the first open / close unit 311 from rising, 2 opening and closing ball 351 moves to the first discharging hole 131 by the pressure difference to move the first discharging hole 131 to the second seating portion 153 inside the discharging opening 15, Closing ball 33 and the 2-1 opening and closing ball 351 can be closed on both sides.

The second-1 opening / closing ball 351 or the second-second opening / closing ball 353 may be formed to have a smaller diameter than the first opening / closing ball 33 so as to be easily moved by a pressure difference. The diameter of the opening / closing hole and the diameter of the second opening / closing hole is preferably larger than the diameter of the second opening / closing hole, so as to be prevented from escaping into the communication hole (17).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Substitutions should be construed as falling within the scope of protection of the present invention.

10: Body
13: first discharge port 131: first discharge port
133: first seat part 135: first packing
15: second discharge port 151: second discharge port
153: second seat part 155: second packing
17: communicating hole 20: outlet means
21: first outlet portion 23: second outlet portion
25: impeller 30: opening / closing means
31: opening / closing plate 311: first opening /
313: second opening and closing part 315: hinge shaft
33: first opening / closing ball 35: second opening / closing ball
351: the 2-1 opening and closing ball 353: the 2-2 opening and closing ball

Claims (4)

(17) for connecting the first and second discharge ports (13, 15) and the first and second discharge ports (13, 15) through which the inflow fluid is discharged A main body 10;
First and second outflow portions 21 and 23 connected to the inlet port and connected to the communication hole 17 to communicate with the first and second discharge ports 13 and 15 in one direction are formed (20) having an impeller (25);
An opening and closing plate 31 for opening and closing the first and second outflow portions 21 and 23 and a second opening and closing plate 31 provided on the opening and closing plate 31 to press the opening and closing plate 31, Closing means (30) including a first opening / closing ball (33) for closing the first door (13) (15);
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The opening / closing means (30)
A second opening and closing ball 351 provided inside the first discharge port 13 and a second opening and closing ball 353 provided inside the second discharge opening 15; 35,
When the impeller 25 rotates in the counterclockwise direction, the fluid is discharged to the first outlet 21 and the first opening and closing ball 33 is pushed so that the first opening and closing ball 33 is moved to the second outlet 15 The second discharge hole 151 is closed and the inner pressure of the second discharge hole 151 blocked by the first open / close ball 33 rises, so that the second open / close ball 353 is closed by the first open / The first opening and closing ball 33 and the second opening and closing ball 353 block both sides of the second discharging hole 151 so that the fluid flows through the first discharging hole 131 1 discharge port 13,
When the impeller 25 rotates in the clockwise direction, the fluid is discharged to the second outlet 23 and the first opening / closing ball 33 is pushed so that the first opening / closing ball 33 is provided in the first discharge port 13 The first discharge hole 131 is closed and the pressure of the first discharge hole 131 clogged by the first opening and closing ball 33 rises and the second opening and closing ball 351 is closed by the first opening and closing ball 33 so that the first opening and closing ball 33 and the second opening and closing ball 351 block both sides of the first discharging hole 131 so that the fluid flows through the second discharging hole 151, (15). ≪ / RTI > The method according to claim 1,
The opening / closing plate 31
A first opening and closing part 311 for opening and closing the first outlet part 21 and a second opening and closing part 313 hinged to the first opening and closing part 311 for opening and closing the second outlet part 23,
When the first opening and closing ball 33 is located above the first opening and closing part 311 and the first opening and closing ball 33 is located above the second opening and closing part 313, (23). ≪ / RTI > The method according to claim 1,
Wherein the second opening / closing ball (35) is smaller in diameter than the first opening / closing ball (33). 4. The method according to any one of claims 1 to 3,
The first open / close ball 33 or the second open / close ball 35 or both of them are made of a material having elasticity,
Wherein the first discharge hole (131) and the second discharge hole (151) are further provided with a first packing (135) and a second packing (155), respectively.

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