KR101584233B1 - diaphragm type pump - Google Patents

Abstract

A diaphragm type pump is provided to function as both of a water pump and an air pump or only as the air pump and to retain a constant level of a mixture ratio between fluid and air without additional control. The diaphragm type pump comprises: a body housing provided with a rolling plate for vertically moving by rotating using the power of a drive motor; a diaphragm having a plurality of compression chambers for pumping fluid or air by repeating compression and expansion with the vertical movement of the rolling plate; an air port formed with a plurality of connection holes provided with an opening/closing valve penetrated vertically to introduce fluid or air into the compression chambers; a cover body having separate intake chambers connected by the connection hole in a space to a surface facing the air port by covering the lower end of the air port, wherein a fluid inlet pipe allowing the introduction of fluid is connected to some intake chambers among the intake chambers and an air inlet pipe allowing the introduction of air is connected to the remaining intake chambers; a backflow prevention member provided in the air inlet pipe to prevent fluid or air flowing backward from the intake chambers by flexibly opening and closing the flow passage; and a fluid outlet part guiding the discharge of the fluid or air pumped by each compression chamber.

Description

An integrated diaphragm pump (diaphragm type pump)

The present invention relates to a diaphragm type pump, and more particularly, to a diaphragm type pump in which only a function as a water pump for supplying a fluid mixed with air and a function as an air pump are performed at the same time, To a new type of integrated diaphragm pump that can be used alone.

Generally, a diaphragm pump is a small-sized pump that pumps air or fluid while repeating compression and expansion of the diaphragm by driving a driving motor. In this regard, the diaphragm pump is disclosed in Korean Patent Publication No. 10-0739042, Japanese Patent Application Laid-Open No. 10-0901737, Japanese Patent Application Laid-Open No. 2003-56465, Japanese Patent Application Laid-Open No. 2004-239101, and the like.

Since such a diaphragm pump can be provided in a small size, it can be applied to a fluid pipe such as a bidet. However, it is inevitably required to perform only one of the fluid pumping and the air pumping.

In consideration of this, in the use such as a bidet in which air is mixed with air to be discharged, a water pump for pumping fluid and an air pump for pumping air are separately prepared and connected to a single pipeline There was an inconvenience.

Furthermore, since the water pump and the air pump are separately provided, not only the overall cost is increased but also the space for the installation of the two pumps must be additionally provided, which leads to an increase in the size of the entire equipment .

SUMMARY OF THE INVENTION The present invention has been made in order to solve various problems of the prior art described above, and it is an object of the present invention to provide a structure of a diaphragm pump so that a corresponding pump can simultaneously perform functions of a water pump and an air pump Or to be used only as a function of an air pump, and to provide a new integrated diaphragm pump in which the mixing ratio of the fluid and the air can be kept constant without any adjustment.

In order to accomplish the above object, the integrated diaphragm pump of the present invention includes a body housing having a driving motor coupled to an upper end thereof, a rolling plate rotatably driven by a driving force of the driving motor, A diaphragm coupled to a lower end of the rolling plate and having a plurality of compression chambers for pumping fluid or air while being supported by the diaphragm guide by up and down movement of the rolling plate while repeating compression and expansion; And each of the compression chambers of the diaphragm is seated on an upper surface thereof and a plurality of communication holes each having an opening and closing valve are formed in the upper and lower portions of the compression chamber in such a manner that fluid or air flows into the compression chamber Air port; And a suction chamber communicating with the communication hole is formed between the opposed faces of the air port while covering the lower end of the air port. The fluid inlet and outlet ports for communicating with a part of the suction chambers of the respective suction chambers, A cover body provided with an air inlet pipe for introducing air while communicating with the suction chamber of the pipe and another part of the pipe; A backflow preventing member which is provided in the air inlet pipe and elastically prevents a backflow of fluid or air from the suction chamber while the flow passage is opened and closed; And a fluid discharge unit for guiding the discharge flow of the fluid or air pumped by the respective compression chambers.

Here, the fluid discharging portion is formed to be protruded downward from the central portion of the air port, through the center of the cover to protrude to the bottom, and the inside of the air discharging portion is formed of an empty tube, And a discharge chamber into which the fluid or air flows during compression of each of the compression chambers constituting the diaphragm communicates with the internal space.

In addition, the inflow pipe of at least one of the fluid inlet pipe and the air inlet pipe of the cover body is formed to protrude outward in the circumferential direction of the cover body.

The air inlet pipe is formed to have a mounting space in which the backflow preventing member is received and mounted, and an air flow path for guiding the air flow between the mounting space and the suction chamber is formed. And an opening / closing cap having an air inlet formed therein so as to prevent the backflow preventing member from coming off but allowing air to flow therein.

The backflow prevention member may include a fixed end coupled to an outer end portion of the air inflow pipe and a fixed end extending from the fixed end toward an inner side portion of the air inflow pipe, And a resilient opening / closing end which is opened by a suction pressure in the suction chamber or which maintains a state in which it is disengaged by a self-restoring force.

Since the integrated diaphragm pump of the present invention as described above can pump the fluid and the air simultaneously with a single product, it can be applied to a system that simultaneously supplies fluid and air (for example, a mixed fluid supply system of bidet) It is possible to reduce the installation cost and to reduce the installation space.

Moreover, since the fluid and the air can be simultaneously pumped by the operation control of the single product rather than the operation control of the two products, the control error can be minimized.

In particular, since the integrated diaphragm pump of the present invention is pumped with the driving force provided by the single driving motor 10, the pumping amount of the air and the fluid is always constant, whereby the integrated diaphragm pump The mixed fluid to be supplied always has a constant mixing ratio of the air and the fluid, so there is no inconvenience of controlling the mixing ratio of the fluid and the air, and the reliability of the product is improved.

1 is an exploded perspective view illustrating an integrated diaphragm pump according to an embodiment of the present invention;
FIG. 2 is a perspective view illustrating an integrated diaphragm pump according to an embodiment of the present invention.
3 is a cross-sectional view illustrating an integrated diaphragm pump according to an embodiment of the present invention
Fig. 4 is an enlarged view of the " A &
5 is a cross-sectional view for explaining the operation state of the integrated diaphragm pump according to the embodiment of the present invention
6 is a cross-sectional view illustrating an integrated diaphragm pump according to another embodiment of the present invention

Hereinafter, a preferred embodiment of the integrated diaphragm pump of the present invention will be described with reference to FIGS. 1 to 6 attached hereto.

Prior to the description, the position and direction of each component constituting the integrated diaphragm pump of the present invention will be described with reference to the direction shown in the figure, and the actual direction may be varied depending on the part or application to be applied to the actual product have.

FIG. 1 is an exploded perspective view illustrating an integrated diaphragm pump according to an embodiment of the present invention, FIG. 2 is an exploded perspective view illustrating an integrated diaphragm pump according to an embodiment of the present invention, 3 to 5 are cross-sectional views illustrating an integrated diaphragm pump according to an embodiment of the present invention.

As shown in these drawings, the integrated diaphragm pump according to an embodiment of the present invention includes a main body housing 100, a diaphragm 200, an air port 400, a cover body 500, And a fluid discharge unit 700. In particular, the present invention provides a fluid supply apparatus and a fluid supply apparatus that can simultaneously supply fluid and air while maintaining a constant mixing ratio of the fluid and air without any adjustment The main feature of

This will be described in more detail below for each configuration.

First, the body housing 100 is formed as a cylindrical body having an internal space and opening to the bottom to form an external appearance of the integrated diaphragm pump according to an embodiment of the present invention.

A driving motor 10 is coupled to an upper end of the body housing 100 and a motor shaft 11 of the driving motor 10 passes through an upper surface of the body housing 100, As shown in FIG.

An eccentric shaft 12 is provided on the motor shaft 11 of the driving motor 10 disposed in the body housing 100 so as to be eccentrically rotated with respect to the axis of the motor shaft 11, And the eccentric shaft 12 is further provided with an inclined fin 13 which is inclined with respect to the axial direction of the motor shaft 11 of the drive motor 10. At this time, the inclined fin 13 revolves around the axis of the motor shaft 11 constituting the driving motor 10 in a state inclined when the driving motor 10 is driven.

The body housing 100 is provided with a rolling plate 110 which is rotated by a driving force of the driving motor 10 in a state of being axially coupled to the inclined fin 13 to perform a vertical rocking motion.

The rolling plate 110 is formed in a sloped downwardly inclined structure toward the circumferential end with respect to the central portion. A coupling hub 111, into which the inclined fin 13 is inserted, is formed at the central portion of the upper surface, .

Next, the diaphragm 200 generates a pumping force so that air and fluid can be forcedly pumped. Here, the air means a gas such as air, and the fluid means a liquid fluid such as water.

The diaphragm 200 is formed of a rubber material coupled to the lower end of the rolling plate 110 and has a plurality of compression chambers 210 and 220 along the circumferential direction. At this time, each of the compression chambers 210 and 220 includes a compression chamber 210 for pumping fluid and a compression chamber 220 for pumping air.

Each of the compression chambers 210 and 220 is formed in the shape of a dome protruding upward and coupling protrusions 211 and 221 penetrating through the rolling plate 110 are formed on the upper surfaces of the compression chambers 210 and 220, .

That is, each of the compression chambers 210 and 220 of the diaphragm 200 is repeatedly compressed and expanded by the upward and downward movement of the rolling plate 110, and air or fluid is introduced into the compression chambers 210 and 220 Or to discharge the air or fluid in the compression chambers 210 and 220, respectively.

The diaphragm 200 is supported by the diaphragm guide 300 while being accommodated in the diaphragm guide 300 so that the diaphragm 200 can be maintained in a mounted state and a stable compression and expansion operation can be performed. do.

Here, the diaphragm guide 300 is formed as a circular block having a plurality of receiving holes 310 through which the compression chambers 210 and 220 of the diaphragm 200 are received, respectively, and the body housing 100 As shown in Fig. Of course, although not shown, the body housing 100 and the diaphragm guide 300 may be integrally formed.

Next, the air port 400 separates the spaces in the compression chambers 210 and 220 from the suction chambers 510 and 520 formed between the air port 400 and the cover body 500 to be described later, and discharges air and fluid And a portion where the chamber 410 is formed.

The air port 400 is coupled to the bottom surface of the diaphragm guide 300 and the compression chambers 210 and 220 of the diaphragm 200 are seated on the upper surface thereof.

In order to allow fluid or air in the respective suction chambers 510 and 520 to flow into the compression chambers 210 and 220 at the positions where the compression chambers 210 and 220 are seated in the respective portions of the air port 400, And communication holes 420 penetrating upward and downward are respectively formed.

In addition, an opening / closing valve 430 is provided in each of the communication holes 420 to prevent the fluid or air in the compression chambers 210 and 220 from flowing back to the communication hole 420. At this time, the on-off valves 430 are installed to block the communication holes 420 in the compression chambers 210 and 220, and when the compression chambers 210 and 220 are inflated, they are separated from the communication holes 420 by the expansion force The compression chambers 210 and 220 are communicated with the suction chambers 510 and 520 to be described later.

A discharge chamber 410 is formed at the center of the upper surface of the air port 400. At this time, a plurality of communication grooves 411 are formed in the inner circumferential surface of the discharge chamber 410 so as to communicate with the inside of the compression chambers 210 and 220 of the diaphragm 200, respectively. That is, the air in the compression chambers 210 and 220 can be discharged to the discharge chamber 410 through the communication groove 411 when the compression chambers 210 and 220 are compressed.

At the same time, the diaphragm 200 is further formed with an opening-closing membrane 230 at a central portion of the bottom of the diaphragm 200. The opening portion 230 selectively opens and closes each of the communication grooves 411 and the discharge chamber 410 of the air port 400. The opening portion 230 has a cylindrical structure having a plurality of cut- 4, when the air in the compression chambers 210 and 220 flows into the communication grooves 411, the communication grooves 411 and the communication grooves 411 are formed in the same direction as the communication grooves 411, So that the inside of the discharge chamber 410 is communicated.

Next, the cover body 500 forms a plurality of divided suction chambers 510 and 520 in cooperation with the air port 400.

The upper end of the cover body 500 is in close contact with the bottom end of the air port 400 while being in close contact with the air port 400, The portions of the opposite surfaces communicating with the communication holes 420 are formed so as to have a space for forming the suction chambers 510 and 520.

In addition, in the embodiment of the present invention, the fluid inlet pipe 530 for guiding the inflow flow of the fluid to the cover body 500 and the air inflow pipe 540 for guiding the inflow flow of the air are collectively provided, The fluid inlet pipe 530 is formed to communicate with a suction chamber (hereinafter referred to as " fluid suction chamber ") 510 of each of the suction chambers 510 and 520 formed by the cover body 500, The air inlet pipe 540 is configured to communicate with a suction chamber (hereinafter referred to as "air suction chamber") 520 of another one of the suction chambers 510, 520.

That is, in the embodiment of the present invention, not only one of air or fluid is sucked into each of the suction chambers 510 and 520, but air and fluid are simultaneously sucked into the suction chambers 510 and 520, So that the diaphragm pump of the present invention can be used as an integral unit of fluid and air.

In particular, although the fluid inflow pipe 530 and the air inflow pipe 540 are each provided as one embodiment, the present invention is not limited thereto. That is, the fluid inlet pipes 530 may be formed in a plurality of two or more, or a plurality of the air inlet pipes 540 may be formed of two or more, depending on the number of the suction chambers 510 and 520 or the mixture ratio of the fluid and the air . In addition, the suction chambers 510 and 520 may be configured such that two or more of the suction chambers 510 and 520 communicate with each other depending on the use of pumping fluid or pumping air.

At the same time, the inflow pipe of at least one of the fluid inlet pipe 530 and the air inflow pipe 540 of the cover body 500 is formed to protrude outward in the circumferential direction of the cover body 500. In order to minimize an increase in the overall product size or mounting space due to the pipe connection in the same direction, the structure of the air inlet pipe 540, And is formed to protrude outward in the circumferential direction of the cover body 500. [

The air inlet pipe 540 is formed to have a mounting space in which a backflow preventing member 600 to be described later is received and mounted and an air flow path 541 for guiding air flow between the mounting space and the air suction chamber 520 Closing cap 550 having an air inlet port 551 is provided at an outer end of the air inlet pipe 530 so as to prevent the backflow preventing member 600 from being separated from the air inlet port 530, .

Next, the backflow preventing member 600 is configured to prevent the fluid or the air from flowing back toward the air inflow pipe 540 from the air suction chamber 520.

That is, although the open / close valve 430 is provided in the communication hole 420 of the air port 400, when the compression expansion of the air pumping compression chamber 220 is rapidly repeated, There is a possibility that the amount of air pumped in the compression chamber 220 for air pumping may be insufficient at the time of back flow of the air. When the fluid flows backward, It is most preferable that the backflow preventing member 600 is additionally provided in the air inlet pipe 540 because the reliability of the user may be deteriorated due to the phenomenon of leaking to the outside through the opening 530.

The backflow prevention member 600 may include a fixed end 610 formed in the air inlet pipe 540 and made of a rubber material and fixed to the outer end of the air inlet pipe 540, The air suction chamber 520 extends from the fixed end 610 toward the inner portion of the air inlet pipe 540 and is opened by the suction pressure in the air suction chamber 520 or is maintained in a state of being retracted by the self- 620).

At this time, the elastic open / close end 620 is formed into a structure in which the elastic open / close end 620 gradually reaches the end portion extending toward the inside of the air inflow pipe 540 and comes into contact with each other. In order to obtain quick response to opening and closing thereof do.

In addition, the fixed end 610 is formed in a stepped structure having an expanded outer circumferential surface in comparison with the elastic open / close end 620, and the outer end portion of the air inflow pipe 540 is also fixed to the fixed end 610 As shown in FIG. Accordingly, the backflow preventing member 600 is always fixed at the correct position, so that the problem of departing from the correct position due to the suction pumping force of the air can be prevented in advance, and the backflow preventing member 600) can be prevented.

In other words, considering that the air inlet pipe 540 and the opening / closing cap 550 closing the end of the air inlet pipe 540 are fixed to each other by welding, the fixed end 610 of the backflow preventing member 600 is connected to the air inlet pipe 540, the opening / closing cap 550 can be mounted and fused to prevent the backflow prevention member 600 from being assembled with poor assembling performance.

Next, the fluid discharge portion 700 is a portion for guiding the discharge flow of the fluid or air pumped by the compression chambers 210 and 220 of the diaphragm 200.

In the embodiment of the present invention, the fluid discharge part 700 is formed as an empty tubular body which is protruded downward from the center side portion of the air port 400 and protrudes to the bottom part through the center of the cover body 500 As an example.

At this time, the inside of the fluid discharging part 700 is formed to communicate with the discharging chamber 410 formed at a central portion of the air port 400.

Of course, the fluid discharge part 700 may be formed integrally with the center of the bottom of the air port 400, as shown in FIG. 6, In this case, when the shape of the air port 400 is modified so that the internal piping of the fluid discharge part 700 and the discharge chamber 410 of the air port 400 can communicate with each other, do.

Hereinafter, the operation of the integrated diaphragm pump according to the embodiment of the present invention will be described in more detail.

First, when power supply or operation control according to the user's needs is performed, the motor shaft 10 of the drive motor 10 is rotated while the drive motor 10 is driven.

The inclined pin 13 eccentrically joined to the motor shaft 11 by the eccentric shaft 12 is revolved around the center of the motor shaft 11 in a tilted state, The circumferential surface of the rolling plate 110 to which the inclined fin 13 is coupled by the operation is repeatedly oscillated up and down. By the oscillation of the rolling plate 110, the diaphragm 110, which is coupled to the bottom surface of the rolling plate 110, The compression chambers 210 and 220 of the diaphragm guide 200 repeatedly compress and expand in the receiving hole 310 of the diaphragm guide 300.

During this process, the pumping force due to the repeated expansion and compression of the compression chamber 210 for fluid pumping, which is communicated with each fluid suction chamber 510 of each of the compression chambers 210 and 220 of the diaphragm 200, The fluid in the suction chamber 510 flows into the discharge chamber 410 after the fluid is introduced into the compression chamber 210 for fluid pumping and is repeatedly discharged to the discharge chamber 410 of the compression chamber 220 for air pumping, The fluid in the air suction chamber 520 flows into the discharge chamber 410 after the fluid in the air suction chamber 520 flows into the compression chamber for air pumping 220 by the pumping force due to the expansion and compression, The fluid is discharged through the fluid discharge portion 700. [ The opening and closing valves 430 installed in the communication holes 420 of the air port 400 located in the compression chambers 210 and 220 close the corresponding communication holes 420 during the compression operation of the compression chambers 210 and 220 Thereby preventing backflow of fluid or air.

In addition, when the air suction force is provided in the air suction chamber 520, the backflow prevention member 600 positioned in the air inlet pipe 540 is opened as shown in FIG. 5, When the supply of the air suction force to the inside of the air suction chamber 520 is interrupted, it is possible to suck the air outside the air inlet pipe 540 as shown in FIG. 3, The suction of the air outside the air inlet pipe 540 is blocked while the air in the air suction chamber 520 or the outflow of the remaining fluid is blocked.

As a result, as the above-described process is repeatedly performed, it becomes possible to provide a mixed fluid in which fluid and air are mixed through the integrated diaphragm pump of the present invention.

Meanwhile, the integrated diaphragm pump according to the embodiment of the present invention may function as an air pump without performing a function as a water pump.

That is, when it is intended to use only for the supply of air, it is necessary to block the fluid flow of the fluid channel (not shown) to which the fluid inlet pipe 530 is connected. In this case, And only air is sucked into the air suction chamber 520 through the air inlet pipe 540, so that it is possible to perform only the function of the air pump.

If the air inlet pipe 540 of the integrated diaphragm pump according to the embodiment of the present invention is connected to a separate shuttable duct, it may be set to perform only the function as a fluid pump through interception of the duct Of course.

As such, the integrated diaphragm pump of the present invention is capable of simultaneously pumping fluid and air into a single product, so that when applied to a system that simultaneously supplies fluid and air (for example, a mixed fluid supply system of bidet) And it is possible to reduce the mounting space.

Furthermore, since the fluid and the air can be simultaneously pumped by the operation control of the single product rather than the operation control of the two products, the control error can be minimized.

In particular, since the integrated diaphragm pump of the present invention is pumped with the driving force provided by the single driving motor 10, the pumping amount of the air and the fluid is always constant, whereby the integrated diaphragm pump As the mixing ratio of the air and the fluid is constantly maintained, there is no inconvenience of controlling the mixing ratio of the fluid and the air, and the reliability of the product can be improved.

10. Drive motor 11. Motor shaft
12. Eccentric shaft 13. Lever pin
100. Body housing 110. Rolling plate
111. Coupling hub 200. Diaphragm
210. Compression chamber 211 for pumping fluid.
220. Compression chamber 221 for air pumping.
230. Opening Closure 300. Diaphragm Guide
310. Reception hall 400. Airport
410. Discharge chamber 411. Communicating groove
420. Communication hole 430. Opening / closing valve
500. Cover body 510. Fluid suction chamber
520. Air suction chamber 530. Fluid inlet pipe
540. Air inlet pipe 541. Air flow path
550. Opening and closing cap 551. Air inlet
600. Reverse-flow preventing member 610. Fixing end
620. Elastic opening and closing 700. Fluid discharging part

Claims (5)

A body housing having a driving motor coupled to an upper end thereof, a rolling plate rotatable by a driving force of the driving motor to move up and down,
A diaphragm coupled to a lower end of the rolling plate and having a plurality of compression chambers for pumping fluid or air while being supported by the diaphragm guide by up and down movement of the rolling plate while repeating compression and expansion;
And each of the compression chambers of the diaphragm is seated on an upper surface thereof and a plurality of communication holes each having an opening and closing valve are formed in the upper and lower portions of the compression chamber in such a manner that fluid or air flows into the compression chamber Air port;
And a suction chamber communicating with the communication hole is formed between the opposed faces of the air port while covering the lower end of the air port. The fluid inlet and outlet ports for communicating with a part of the suction chambers of the respective suction chambers, A cover body provided with an air inlet pipe for introducing air while communicating with the suction chamber of the pipe and another part of the pipe;
A backflow preventing member which is provided in the air inlet pipe and elastically prevents a backflow of fluid or air from the suction chamber while the flow passage is opened and closed; And,
And a fluid discharge portion for guiding the discharge flow of the fluid or air pumped by each of the compression chambers. The method according to claim 1,
Wherein the fluid discharge portion is formed so as to protrude downward from the central portion of the air port and protrude to the bottom portion through the center of the cover body,
And a discharge chamber through which fluid or air flows during compression of each of the compression chambers constituting the diaphragm is communicated with the inner space of the fluid discharge portion at the center of the upper surface of the air port. . The method according to claim 1,
Wherein an inlet pipe of at least one of a fluid inlet pipe and an air inlet pipe of the cover body is formed to protrude outward in a circumferential direction of the cover body. The method according to claim 1,
Wherein the air inlet pipe is formed to have a mounting space in which the backflow preventing member is received and mounted, and an air flow path for guiding the air flow between the mounting space and the suction chamber is formed,
Wherein an opening / closing cap having an air inlet is coupled to an outer end of the air inlet pipe so as to prevent the backflow preventing member from coming off but allow air to flow in. 5. The method according to any one of claims 1 to 4,
The backflow prevention member
A fixed end coupled to an outer end portion of the air inlet pipe,
And the end portion of the end portion is gradually formed as a shaft tube toward the end, and is opened by the suction pressure in the suction chamber, or maintained in a state where the end portion is clogged by the self-restoring force And a flexible diaphragm pump.

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