KR101655412B1

KR101655412B1 - Pump

Info

Publication number: KR101655412B1
Application number: KR1020150076352A
Authority: KR
Inventors: 김현진; 노영재; 배병일; 배성우
Original assignee: 인천대학교 산학협력단; (주) 디.에이치.테크; 주식회사 성신
Priority date: 2015-05-29
Filing date: 2015-05-29
Publication date: 2016-09-09

Abstract

The present invention relates to a pump used in a washing machine, a dishwasher, and the like. The pump includes first and second outflow portions through which fluids flow into the first outflow portion or the second outflow portion, And a protruding pin is provided on the opening and closing member so as to rotate the opening and closing member in accordance with the flow of the fluid to more completely control the flow of the fluid.

Description

Bi-directional pump {PUMP}

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 to solve the above-mentioned problems, and it is an object of the present invention to provide a BLDC motor capable of forward and reverse bidirectional driving to control the rotational direction and speed of a pump impeller, The present invention provides a bidirectional pump using an opening / closing member capable of discharging fluid to a first or second discharge port.

The opening / closing member may be formed as an opening / closing plate or an opening / closing ring to selectively open / close the first outlet or the second outlet. The opening / closing member may include a projecting pin, Which is capable of moving in response to an operation of the pump.

Further, the opening / closing plate is slidably engaged with the main body, and the opening / closing ring is rotatably provided in the main body in the main body, so that the opening and closing member is moved only by the flow of the fluid without providing a separate power source And it is an object of the present invention to provide a bidirectional pump capable of opening and closing the first or second outlet.

In order to achieve the above object, the bidirectional pump according to the present invention comprises:

A main body having first and second discharge ports through which fluid is discharged,

First and second outflow portions connected to the first and second outlets, respectively, and an impeller provided in the inner portion;

Opening / closing means comprising an opening / closing member for opening / closing the first or second outlet portion;

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The opening /

And an opening / closing plate slidingly coupled to the main body and opening / closing the first outlet portion by moving the second outlet portion along the flow of the fluid,

Wherein the opening and closing member is provided with an opening and closing ring provided in the inner portion and having a first communication hole communicating with the first outlet portion and a second communication hole communicating with the second outlet portion.

The bidirectional pump according to the present invention has an opening and closing member at an outlet for connecting the inlet and the outlet to a main body having an inlet for introducing and discharging a fluid and a first and a second outlet, Accordingly, it is possible to control the flow of the fluid selectively by opening or closing the outflow portion, thereby eliminating the need for a separate electrical structure, simplifying the structure, reducing the risk of failure, and reducing the cost.

Further, the opening and closing member is composed of an opening / closing plate which slides on the main body to open / close the first outlet and the second outlet, so that the configuration is simple and there is no risk of failure, and the first outlet or the second outlet can be opened / There is an effect.

Furthermore, the opening and closing member can be formed as an opening and closing ring. Even in the case of the opening and closing ring, the structure is simple as in the case of the opening and closing plate.

1 is a perspective view of an bidirectional pump according to the present invention;
2 is a perspective view of a first embodiment of an bidirectional pump according to the present invention;
3 is a cross-sectional view of the first embodiment of the bidirectional pump according to the present invention
Fig. 4 is a view showing a second embodiment of the bidirectional pump according to the present invention
5 is a modification of the bidirectional pump 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 P 'according to the present invention includes a main body 10 having an inlet and an outlet, and outlet means 20 connected to the inlet to discharge the fluid to the outlet.

More specifically, the main body 10 is provided with an inlet through which the fluid flows, and the first outlet 131 and the second outlet 133 are provided so that the fluid moved from the inlet may be discharged in different directions . And first and second outflow ports 23 connected to the first and second discharge ports 133 for transmitting the fluid introduced into the fluid inlet port to the first and second fluid outlet ports 133, And an outlet means (20) having an inner part (111) in which an impeller for controlling the flow is built in.

1 to 4, the main body 10 is provided with outlet means 20 and the outlet means 20 is provided with an impeller 25 and an impeller 25, And a motor (not shown) for transmitting power to the motor. The fluid is introduced into an inner part (111) through which the impeller (25) is received via an inlet (not shown), and the first and second outflows (This selection is determined by the opening and closing member 30 to be described later). The inflowing fluid flows into the first and second discharge openings 133 provided in the main body 10 And the inner diameters of the first and second discharge openings 133 can be freely changed according to the purpose of use, and the scope of the right should not be limited.

The main body 10 further includes a first powder 11 provided with the insert part 111 and a second powder 11 provided on the first powder 11 and having the first and second discharge ports 133 13).

Although not shown in the drawing, a motor for rotating the impeller 25 is preferably a BLDC motor (Brushless DC motor), but it is not necessary to use a BLDC motor. The motor may be rotated in both directions Should be used.

The main feature of the bidirectional pump P 'according to the present invention is that the fluid flows out to one of the first discharge port 131 and the second discharge port 133. For this purpose, Means 30 are provided.

The shape of the opening and closing member 30 may be two embodiments including the shape of the opening and closing plate 31 and the shape of the opening and closing ring 33, and each embodiment will be described in detail with reference to the drawings do.

2 and 3, the opening and closing member 30 is slidably coupled to the main body 10 as a first embodiment of the opening and closing member 30 of the bidirectional pump P according to the present invention, And an opening / closing plate 31 for selectively opening / closing the first outlet 21 and the second outlet 23 by moving in accordance with the flow of the fluid.

More specifically, the main body 10 is provided with a slide hole 27 communicating with the inner part of the first powder 11, and the opening / closing plate 27 31 are combined with each other so as to be able to move within the slide hole 27. More specifically, a slide hole 27 is formed in the upper portion of the first body 10, and protruding rails 271 protruding inward are formed on both sides of the slide hole 27. The slide hole 27 is configured to communicate with both the first and second outflow portions 23 (more specifically, one side of the slide hole 27 is communicated with the first outflow portion 21) And the other end communicates with the second outlet 23. The opening and closing plate 31 is coupled to the slide hole 27 to move the first outlet 21 or the second outlet 23 So that it can be closed.

When the open / close board 31 is engaged with the protruding rail 271 for smooth movement of the open / close board 31, the open / close board 31 is slightly spaced from the edge of the slide ball 27 Therefore, it is desirable to minimize the frictional force so as to ensure freedom of movement.

The protruding pin 311 is provided on the opening and closing member 30, that is, the opening and closing plate 31 in the first embodiment. More specifically, the protruding pin 311 is provided on both ends of the opening and closing plate 31, So that the opening and closing plate 31 is formed in a 'C' shape. The protruding pin 311 protrudes through the slide hole 27 so as to be positioned at the inserted portion 111 when the opening and closing plate 31 is engaged with the slide hole 27, So that it can be positioned close to the impeller 25 located in the interpolating unit 111 without colliding with the impeller 25.

When the impeller 25 rotates in the clockwise direction, the fluid rotates in the clockwise direction along the impeller 25, and the fluid to be rotated in this manner flows through the opening / The opening and closing plate 31 is moved so as to close the second outlet 23 by pushing the projecting pin 311 of the plate 31 so that the fluid is discharged through the first outlet 21 When the impeller 25 moves in the counterclockwise direction, the fluid pushes the protruding pin 311 in the opposite direction to move the opening / closing plate 31 to the first outlet 311, So that the first outlet 21 and the second outlet 23 can be selectively opened and closed by the rotation of the impeller 25 so that the first outlet 21 and the second outlet 23 can be closed.

4 shows the second embodiment of the opening and closing member 30 according to the present invention. The opening and closing member 30 is provided in the inner part of the insertion part 111, 2 outflow section 23 of the second embodiment.

The opening and closing ring 33 is formed to have the same size as that of the inner part of the insertion part 111. The inner surface of the inner part of the insertion and removal part 111 The ring 33 is positioned. The first communication hole 333 and the second communication hole 335 are spaced apart from each other in the opening and closing ring 33 and between the first communication hole 333 and the second communication hole 335, At one side of the first communication hole 333 and the second communication hole 335, a projecting pin 331 protruding inward is formed.

The length of the projecting pin 331 is preferably such that the length of the projecting pin 331 does not affect the rotation of the impeller 25 as described in the first embodiment. It is preferable to have three units, but it is sufficient if plural units are provided, and the scope of the right should not be limited.

According to the operation of the second embodiment, the fluid presses the projecting pin 331 in accordance with the direction in which the impeller 25 rotates, thereby rotating the opening and closing ring 33. In accordance with the rotation direction, The second communicating hole 335 and the second outflowing portion 23 are communicated with each other so that the fluid communicates with the first communicating hole 333 or the second communicating hole 335 . At this time, when the first communication hole 333 and the first outlet 21 communicate with each other, the second communication hole 335 and the second outlet 23 do not communicate with each other, The first outlet 33 and the second outlet 33 are communicated with each other so that the first outlet 33 and the first outlet 21 do not communicate with each other, The fluid can selectively flow through the outflow portion 23 so that the same effect as that of the first embodiment can be obtained.

At this time, the opening / closing ring 33 rotates in accordance with the rotation of the fluid. If the opening / closing ring 33 rotates 360 degrees together with the fluid, the opening / closing ring 33 can not function. A stopping member 111A for controlling the rotation of the opening and closing ring 33 is provided and the stopping member 111A is protruded inward from the inner part 111 of the main body 10 One of which is located in the first communication hole 333 and the other of which is located in the second communication hole 335.

In other words, when the opening and closing ring 33 rotates, the stopping member 111A is connected to the first communication hole 333 so that the first communication hole 333 and the first outlet 21 can communicate with each other, And the stopping member 111A on the opposite side is positioned in the second communication hole 335 so that when the opening and closing ring 33 rotates in the opposite direction, And supports one side of the second communication hole 335 so that the second outlet 23 can be communicated.

Further, the shape of the first and second communication holes 335 may be various shapes such as a square shape and a circular shape, and the scope of the right and the left should not be limited.

5 shows a modification of the opening and closing ring 33 when the opening and closing member 30 is formed of the opening and closing ring 33. The opening and closing ring 33, The first and second communication holes 335 may not be formed in a shape of a small width so that the opening and closing ring 33 rotates in the interior portion 111 , The contact area is minimized to reduce the frictional force, so that the influence of the flow of the fluid can be more received, so that the function of the opening / closing ring 33 can be performed even if the flow velocity is small.

As shown in FIG. 5B, one end of the interpolating portion 111 is configured to protrude inward, and the protruding step 111B is formed in the interpolating portion 111, The shape of the projecting step 111B is formed in a curved shape rather than a circular shape so that the rotation of the opening and closing ring 33 is restricted by the projecting step 111B, It becomes possible to perform the function of the described stopping member 111A.

Further, in this case, although not shown in the drawing, a guide groove for guiding the rotation of the curved opening / closing ring 33 is provided on the inner surface of the interpolation section 111, and a guide protrusion Closing ring 33 so as to prevent the opening / closing ring 33 from moving arbitrarily in the inside of the insertion portion 111.

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.

P, P ': Pump
10: Body 11: First powder
111: an interpolation part 111A: a stopping member
111B: projecting step 13: second powder
131: first discharge port 133: second discharge port
20: outlet means 21: first outlet
23: second outflow section 25: impeller
27: slide ball 271: protruding rail
30: opening and closing means, opening and closing member 31: opening and closing plate
311: projecting pin 33: opening / closing ring
331: projecting pin 333: first communicating hole
335: second communication hole

Claims

A main body 10 having first and second discharge ports 131 and 133 through which fluid is discharged, and a central insertion portion 111;
The first and second outflow ports 21 and 23 connected to the first and second discharge ports 131 and 133 and the impeller 25 provided in the interpolation section 111, (20);
An opening / closing means 30 comprising an opening / closing member 30 for opening / closing the first or second outlet 21 or 23;
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The opening / closing member (30)
And an opening / closing plate (31) slidably coupled to the main body (10) for selectively opening and closing the first outlet (21) and the second outlet (23)
A first communicating hole 333 communicated with the first outlet 21 and a second communicating hole 335 communicating with the second outlet 23 are provided in the interpolating unit 111 When the first outlet portion 21 and the first communication hole 333 are communicated with each other, the second outlet portion 23 and the second communication hole 335 are out of communication with each other, When the second outflow portion 23 and the second communication hole 335 are communicated, the first outflow portion 21 and the first communication hole 333 do not communicate with each other,

The opening and closing member 30 is provided with projecting pins 311 and 331 so that the fluid is rotated by the rotation of the impeller 25 to push the projecting pin 311, And the second outlet (21) (23) is opened or closed.

The method according to claim 1,
And the projecting step (111B) is formed in the interpolating part (111).

The method according to claim 1,
The main body 10 is provided with a slide hole 27 communicating with the insertion portion 111 and a protruding rail 271 to which the opening and closing plate 31 is coupled is further provided on both sides of the slide hole 27 Features an interactive pump.

The method according to claim 1,
Wherein the inner surface of the interpolation unit (111) is further provided with a guide groove which is curved and guides the rotation of the opening / closing ring (33).