KR200313778Y1 - Pressure controller and milking device including the pressure controller - Google Patents

Abstract

A pressure regulator disposed between a pneumatic generator and a suction device to indirectly regulate pressure and a breast pump including the pressure regulator are disclosed. The pressure regulator is mounted on the air inlet pipe to connect the pressure regulator and the air flow passage connecting the pneumatic generator and the suction device, the air inlet pipe to connect the pneumatic connector and the external air inlet, and the air inlet pipe to adjust the opening degree. It is provided with a flow rate control valve, an air discharge pipe connected to the pneumatic connection pipe and a check valve which is mounted on the air discharge pipe to pass only the air flow from the pneumatic connection pipe, it is possible to adjust both the suction force and the output of the air. In addition, the breast pump can be simply configured by using the pressure regulator and the single-acting air cylinder.

Description

PRESSURE CONTROLLER AND MILKING DEVICE INCLUDING THE PRESSURE CONTROLLER}

The present invention relates to a pressure regulator of a breast pump, and more particularly, a pressure regulator for adjusting suction power in a device including a pneumatic generator and a suction device, such as a breast pump for forcibly squeezing breast milk from a mother's breastfeeding part (breast). It relates to a breast pump including a pressure regulator.

There is a breast pump as a device for regulating suction pressure. Breast pump is a device forcibly squeezing breast milk from the mother's breastfeeding mother. If the mother's breastfeeding remains after the birth, or if the infant does not breastfeed, the mother's breastfeeding excess milk can cause severe pain around the nursing mother. At this time, the breast pump may be used to forcibly squeeze out excess milk in the lactation part.

Various types of breast pumps are currently disclosed, and these breast pumps are classified into manual and electric motors according to a driving method.

First, the manual breast pump is generally composed of a suction tube in the form of a fallopian tube which is covered by a nursing part, a vacuum pneumatic generator in the form of a rubber ball for generating pneumatic pressure in the suction tube, and a bottle for storing breast milk introduced into the suction tube.

The manual breast pump forcibly removes breast milk from the nursing mother through an operation in which a mother or an assistant presses the suction tube with one hand and presses and releases the vacuum pneumatic generator with the other hand. However, such a manual breast pump generates air pressure due to a user's grip force, so it is impossible to generate strong air pressure, so the pumping efficiency is very low, and the air pressure is not easily adjusted. In addition, since the user must provide a repetitive grip force, the user has to consume excessive force and has a problem of being easily tired.

On the other hand, the electric breast pump is generally composed of a pneumatic generator that is automatically operated by a motor and an air cylinder, an adsorption tube connected to the pneumatic generator, and a baby bottle in which breast milk introduced through the adsorption tube is stored.

1 is a perspective view of a conventional electric breast pump, and FIG. 2 is a partial cross-sectional view of a conventional pressure regulator. The pressure regulator of FIG. 2 may be installed in the electric breast pump of FIG. 1 to function as a pressure regulator.

1 and 2, an adsorption tube 2 is connected to a pneumatic generator 1 in which a motor and an air cylinder are built in via a hose 4. The adsorption tube 2 is connected to a feeding bottle 3 for storing sucked breast milk.

On the other hand, the pressure regulator for adjusting the degree to which the air pressure generated in the pneumatic generator (1) is transmitted to the adsorption pipe (2) includes an adjustment bolt (6), the adjustment bolt (6) is a pneumatic generator (1) Is fastened to a moving passage 5 of air, which is connected to the suction pipe 2 through the hose 4. The end of the adjustment bolt 6 is partially cut and has a V-shaped inclined cross section 7.

It is comprised as mentioned above, and when the pressure applied to the nursing part of mother is too high, the adjustment bolt 6 is loosened. As the V-shaped cross section 7 exposed to the outside increases, the hole provided by the cross section 7 expands. As the hole expands, the amount of air discharged from the air movement passage 5 to the outside through the hole increases, and the pressure delivered to the adsorption device decreases.

On the other hand, if the pressure on the nursing part of the mother is too low, tighten the adjusting bolt 6. Then, as the V-shaped cross section 7 exposed to the outside decreases, the hole provided by the cross section 7 is reduced. As the hole shrinks, the amount of air discharged from the moving passage 5 of the air to the outside through the hole decreases, and the pressure delivered to the adsorption device increases.

By the way, the conventional adjustment bolt 6 is directly coupled to the air movement passage (5) to receive air pressure directly. For this reason, excessive force is required when tightening or releasing the adjusting bolt 6. In particular, in the case of releasing the adjusting bolt 6, since there is no structure limiting the degree to which the adjusting bolt 6 is loosened from the air moving passage 5, the adjusting bolt 6 is excessively loosened to make the air moving passage ( 5) often separated completely from.

On the other hand, the most important function of the breast pump is the regulation of suction power and earth output. That is, the suction power of the breast pump should be able to be adjusted according to the user's choice, and the earth output should be able to prevent the feeding part from being forcibly pushed out by generating a relatively low pressure compared to the suction power.

In particular, a pneumatic generator comprising a single-acting air cylinder simply composed of a cylinder and a piston has the problem of providing excessive and direct earth output to the feeding portion. Specifically, the pneumatic generator including the single-acting air cylinder repeats the suction stroke in which the piston moves away from the suction device and milks the breast milk and the discharge stroke in which the piston returns to its original position and discharges the air in the cylinder. In general, a pressure regulator regulates suction force, but a pressure regulator capable of regulating earth output is rarely disclosed.

Accordingly, an object of the present invention is to provide a pressure regulator that can be indirectly regulated to enable easy use and precisely control the pneumatic pressure.

In addition, another object of the present invention is to provide a pressure regulator that can adjust the suction force and the earth output.

In addition, another object of the present invention is to provide a breast pump that can indirectly adjust the pneumatic pressure, the suction force and the earth output, and has a simple structure.

1 is a perspective view of a conventional electric breast pump.

2 is a partial cross-sectional view of a conventional pressure regulator.

Figure 3 is a cross-sectional view for explaining the suction step of the pressure regulator according to an embodiment of the present invention.

4 is a cross-sectional view for describing a discharging step of the pressure regulator of FIG. 3.

FIG. 5 is a cross-sectional view illustrating complete shutoff of the flow regulating valve to explain the flow regulating function of the pressure regulator of FIG. 3.

6 is a cross-sectional view showing the full opening of the flow control valve to explain the flow control function of the pressure regulator of FIG.

7 is a perspective view of a breast pump according to an embodiment of the present invention.

8 is a schematic view for explaining the operation of the breast pump of FIG.

-Explanation of symbols for the main parts of the drawing-

100: Pressure regulator 110: Body

120: pneumatic connector 130: air inlet pipe

140: flow rate control valve 150: air discharge pipe

160: ball check valve 200: oil pump

210: Case 220: Suction machine

230: Cycle adjustment knob 235: Pressure adjustment knob

240: pneumatic generating section 250: driving section

260: control member

In order to achieve the above object of the present invention, the pressure regulator according to the present invention includes a pneumatic connection pipe, an air inlet pipe, a flow control valve, an air discharge pipe and a check valve.

The pneumatic connector connects the pressure regulator with the air movement passage connecting the pneumatic generator and the suction device, and the pressure regulator indirectly controls the transfer of pneumatics generated by the pneumatic generator through the pneumatic connector to generate the suction device. Adjust the suction power.

The pneumatic connection tube is in communication with the air inlet tube and the air discharge tube. The air inlet pipe is connected to the external air inlet source, and air is introduced from the external air inlet source during the intake stroke of the cylinder to lower the suction force of the intake device. The air inlet pipe is equipped with a flow control valve, and the flow control valve controls the degree of suction power drop by varying the opening rate of the air inlet pipe.

The air discharge pipe communicates with the pneumatic connection pipe and the outside, and one end of the air discharge pipe is located between the pneumatic connection pipe and the flow control valve to communicate with the air inlet pipe. The air discharge pipe is equipped with a check valve, which checks the air flow in only one direction, i.e., from the air inlet pipe to the outside, and prevents air from entering the pressure regulator from the outside. Accordingly, the check valve prevents the flow of air introduced into the pressure regulator through the discharge tube from the outside during the intake stroke of the air cylinder, and is opened by the pressure inside the pressure regulator during the discharge stroke of the air cylinder to open the air through the discharge tube. Discharge. Since the air is discharged through the discharge pipe during the discharge stroke, the earth output generated in the suction device is further dropped, and generates a relatively low earth output compared to the suction force.

In addition, in order to achieve another object of the present invention, the breast pump according to the present invention is connected to the pneumatic generating member, the inhaler for suctioning the object, the pneumatic generating member and the air transfer pipe for transmitting the suction force connecting the inhaler, the air transfer pipe An air inlet pipe connecting a pneumatic connector, a pneumatic connector and an external air inlet source, a flow control valve mounted on the air inlet pipe, an air discharge pipe connected to the pneumatic connection pipe, and a check valve mounted on the air discharge pipe.

The pneumatic connection pipe, the air inlet pipe, the flow control valve, the air discharge pipe and the check valve constitute a pressure regulator, the pressure regulator adjusts the suction force transmitted through the air transfer pipe, and significantly reduces the earth output to operate the breast pump Provide users with comfort.

Since the pressure regulator can provide both suction force and earth output, the pneumatic generating member can sufficiently perform the function of the pressure regulator even if it is composed of only a single-acting air cylinder, and can simplify the structure of the air cylinder. Can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, but the content of the present invention is not limited and limited by the following embodiments.

3 and 4 are cross-sectional views illustrating a pressure regulator according to an embodiment of the present invention. 3 is for explaining the flow of air in the intake stroke of the pneumatic generating member, Figure 4 is for explaining the flow of air in the discharge stroke of the pneumatic generating member.

3 and 4, the pressure regulator 100 includes a pneumatic connection pipe 120, an air inlet pipe 130, a flow control valve 140, an air discharge pipe 150, and a check valve 160. The components are molded in the body 110.

The suction device of the air delivery pipe 105 and the pneumatic generator (not shown) are connected. When the pressure regulator is installed in the breast pump, the upper end of the air transfer pipe 105 is connected to the suction device for sucking breast milk from the breast feeding unit, and the lower end is connected to the pneumatic generator based on the drawing. The pneumatic generator is composed of a single-acting air cylinder including a cylinder and a piston, and provides suction power and earth output to the suction device corresponding to the suction stroke and the discharge stroke of the piston, respectively.

The pneumatic connection pipe 120 connects the air transfer pipe 105 and the pressure regulator 100 to transfer suction power and toe output from the pneumatic generator to the pressure regulator 100, and the pressure by the pressure regulator 100. The adjustment effect is transmitted to the air delivery pipe 105. The pressure regulator 100 is not mounted directly on the air delivery pipe 105 to directly control the air delivery amount and the pneumatic delivery, but is indirectly mounted by the pneumatic connection pipe 120 branched from the air delivery pipe 105. Indirectly controls air delivery and pneumatic delivery.

The pneumatic connector 120 is in communication with the air inlet tube 130, the air inlet tube 130 connects the pneumatic connector 120 and the external air inlet source (not shown). The external air source may be air around the pressure regulator, or may be a separate device such as an air storage tank mounted on the pressure regulator.

The air inlet pipe 130 is equipped with a flow control valve 140 for changing the opening degree of the air inlet pipe 130. The flow control valve 140 includes a flow control valve body 142 and a valve spool 144.

The valve spool 144 partially penetrates the flow regulating valve body 142 and moves therein to adjust the opening degree of the air inlet pipe 130. The valve spool 144 has a cylindrical shape and a male thread portion is formed on its outer circumferential surface and a female thread portion is formed in a corresponding hole of the flow regulating valve body 142. As the valve spool 144 rotates, it moves in the front and rear direction inside the flow regulating valve 140, and the opening degree of the air inlet pipe 130 varies according to the movement amount of the valve spool 144. In this embodiment, the valve spool 144 adjusts the relative amount of movement with respect to the valve body 142 by using a screw, but can adjust the amount of movement through surface friction without a screw and can adjust the relative amount of movement by other movement methods.

The valve spool 144 has a tapered end, and the flow regulating valve body 142 is formed with a groove 146 corresponding to the tapered end of the valve spool 144. The end of the valve spool 144 is partially inserted into the groove 146 to effectively block the flow of air, it is possible to smoothly control the flow of air. In addition, the other end of the valve spool 144 is connected to a pressure adjusting knob (not shown), and a rotation or input signal of the knob is transmitted to the valve spool 144 to determine the amount of movement of the valve spool 144. do.

The air discharge pipe 150 is connected to the pneumatic connection pipe 120, the air discharge pipe 150 connects the pneumatic connection pipe 120 and the outside. In addition, the air discharge pipe 150 is equipped with a ball check valve 160 to pass only the air flow from the pneumatic connecting pipe 120, and blocks the flow in the reverse direction. The ball check valve 160 is a ball for blocking the inlet of the air discharge pipe 150, a spring for pressurizing the ball toward the inlet of the air discharge pipe 150, and the ball and the spring to accommodate the spring against the ball It includes a check valve body for supporting.

As shown in FIGS. 3 and 4, the air inlet pipe 130, the flow control valve body 142, the air discharge pipe 150, and the check valve 160 may be integrally formed into a single body 110. Can be.

Hereinafter, the function of the pressure regulator 100 will be described with reference to FIGS. 3 and 4.

A suction force is generated in the suction device during the suction stroke of the piston of the pneumatic generator. At this time, the air may be introduced into the air transfer pipe 105 through the air inlet pipe 130, the flow control valve 140 and the pneumatic connection pipe 120 from the external air inlet source, the amount of air introduced from the external air inlet source In response to the suction force generated in the suction device can be adjusted. The ball check valve 160 blocks the flow from the outside into the pressure regulator 100, and does not introduce air through the air discharge pipe 150 during the suction stroke of the piston.

On the other hand, earth output may occur in the suction device during the discharge stroke of the piston of the pneumatic generator. When discharging, the air moves in the opposite direction to be introduced into the pressure regulator 100 through the pneumatic connection pipe 120, and the introduced air is discharged to the outside through the air inlet pipe 130 or the air discharge pipe 150. Can be. At this time, the ball check valve 160 is opened. When the adsorption device is sealed, it has a relatively large resistance compared to the pressure regulator 100, and most of the air can be discharged through the pressure regulator 100 having a relatively low resistance. Thus, very low earth output occurs in the suction device.

5 and 6 are cross-sectional views for explaining the flow control function of the pressure regulator of FIG. 3, FIG. 5 shows the complete shutoff of the flow control valve 140, and FIG. 6 shows the complete control of the flow control valve 140. It shows the opening.

5 and 6, when the valve spool 144 descends to closely contact the groove 146, the air inlet pipe 130 is blocked, and the suction device generates the highest suction force during the suction stroke of the piston. On the contrary, when the valve spool 144 is raised to fully open the air inlet pipe 130, the suction device generates the lowest suction force during the suction stroke of the piston.

7 is a perspective view of a breast pump according to an embodiment of the present invention, and FIG. 8 is a schematic view for explaining the operation of the breast pump of FIG. 7. In the description of this embodiment, reference may be made to the contents of the pressure regulator of the previous embodiment, and repeated descriptions may be omitted.

7 and 8, the breast pump 200 includes a pneumatic generating member, an inhaler 220, an air transfer pipe 205, and a pressure regulator 100. The pressure regulator 100 includes a pneumatic connection pipe 120, an air inlet pipe 130, a flow control valve 140, an air discharge pipe 150, and a check valve 160, wherein the components are the body 110. ) Is molded inside (see FIG. 3).

The high pressure generating member includes a pneumatic generator 240 and a driver 250. The pneumatic generator 240 is a single-acting air cylinder composed of a cylinder 242 and a piston 244, and generates suction and toe output to the inhaler 220 by the reciprocating motion of the piston 244. The driver 250 includes a motor 252, a reducer 254, and a crank 256. The driving force generated in the motor 252 rotates the crank 256 via the reducer 254, and the piston 244 reciprocates by the rotation of the crank 256.

The case 210 of the breast pump 200 is equipped with a period adjusting knob 230 and a pressure adjusting knob 235. The period adjusting knob 230 is used to control the reciprocating period of the piston 244 and may adjust the rotational speed of the motor 252 or the reduction ratio of the reducer 254, and the pressure adjusting knob 235 may be used to control the inhaler 220. As to control the suction force, the amount of movement of the valve spool 144 may be adjusted. The adjustment values of the knobs 230 and 235 are transmitted to the driving unit 250 or the pressure regulator 100 through the control member 260, respectively. Preferably, complete opening and closing of the air inlet tube 130 and adjusting the piston cycle are performed in one rotation of the knobs 230 and 235.

The inhaler 220 includes a suction plate 222, a connecting portion 224 and a reservoir 226. Adsorption plate 220 is in close contact with the mother's nursing part, the obtained breast milk is stored in the reservoir 226. The adsorption plate 220 and the reservoir 226 communicate with each other, and the connection portion 224 is mounted therebetween. The air transfer pipe 205 is connected to the connection portion 224 so that suction force from the pneumatic generating member is generated in the suction plate 220 and the reservoir 226 through the connection portion 224.

Since the pneumatic generator 240 according to the present embodiment has a simple structure as a single-acting air cylinder, the manufacturing and maintenance of the pneumatic generator 240 is very easy, and the manufacturing cost is low. In addition, it is possible to implement the function of the breast pump simply and inexpensively by providing the output power adjustment function to the pressure regulator 100 instead of the pneumatic generator 240.

As described above, according to the present invention, the pressure regulator includes a suction force and a power output adjustment function to facilitate the pressure control between the pneumatic generator and the suction device, adopt a simple pneumatic generator or the structure of the pneumatic generator Its simple design makes it convenient and economically profitable.

In addition, the pressure regulator is indirectly connected to the air conveying pipe via a branch passage called a pneumatic connecting pipe to facilitate the pressure adjusting operation.

In addition, the breast pump can use a cylinder and a piston of a simple structure by including a pressure regulator that can adjust the suction force and the earth output, and the breast pump structure can be manufactured and assembled simply, and the manufacturing cost and assembly cost can be remarkably increased. Can be lowered.

In the above description and description of the pressure regulator and the breast pump of the breast pump according to a preferred embodiment of the present invention, but the subject innovation is not limited by the above-described embodiment and out of the gist of the subject innovation claimed in the utility model registration claims below Without this, it will be understood by those skilled in the art that the present invention may be modified in various ways.

Claims (13)

A pneumatic connector connected to an air movement passage connecting a pneumatic generator and a suction device for sucking an object using pneumatic pressure generated from the pneumatic generator; An air inlet pipe connecting the pneumatic connector and an external air inlet source; A flow control valve mounted on the air inlet pipe and controlling a pneumatic pressure generated in the suction device by adjusting an opening degree of the air inlet pipe; An air discharge pipe connected to the pneumatic connection pipe; And And a check valve mounted to the air discharge pipe to pass only the air flow from the pneumatic connection pipe. The method of claim 1, The flow control valve is a pressure regulator characterized in that it comprises a flow control valve body mounted to the air inlet pipe and a valve spool movably mounted inside the flow control valve body to adjust the opening degree of the air inlet pipe. . The method of claim 2, A male screw is formed on an outer surface of the valve spool, and a female screw corresponding to the male screw is formed on the flow regulating valve body, and the valve spool adjusts the opening degree of the air inlet pipe. . The method of claim 2, And the valve spool has a tapered end and the flow regulating valve body has a groove corresponding to the tapered end of the valve spool. The method of claim 2, And the air inlet pipe, the flow control valve body, the discharge pipe and the check valve are provided by an integral body. The method of claim 1, The check valve is a pressure regulator, characterized in that the ball check valve. Pneumatic generating means; An inhaler for sucking an object using pneumatic pressure generated by the pneumatic pressure generating means; An air transfer pipe connecting the pneumatic generator and the inhaler; A pneumatic connector connected to the air conveying pipe; An air inlet pipe connecting the pneumatic connector and an external air inlet source; A flow rate control valve mounted to the air inlet pipe and controlling a pneumatic pressure generated in the inhaler by adjusting an opening degree of the air inlet pipe; An air discharge pipe connected to the pneumatic connection pipe; And And a check valve mounted to the air discharge pipe and having a check valve for passing only the air flow from the pneumatic connection pipe. The method of claim 7, wherein The pneumatic generating means is a breast pump, characterized in that it comprises a single-acting air cylinder consisting of a cylinder and a piston. The method of claim 7, wherein The inhaler includes an adsorption plate in close contact with the mother's feeding part, a reservoir communicating with the adsorption plate for storing the object, and a connection portion installed between the adsorption plate and the storage tank and connected to the pneumatic connection tube to provide air pressure to the adsorption plate. Breast pump, characterized in that. The method of claim 7, wherein The flow control valve is a breast pump, characterized in that it comprises a flow control valve body mounted to the air inlet pipe and a valve spool movably mounted inside the flow control valve body to adjust the opening of the air inlet pipe. The method of claim 10, A male screw is formed on an outer surface of the valve spool, and a female screw corresponding to the male screw is formed on the flow regulating valve body so that the valve spool adjusts the opening of the air inlet pipe. The method of claim 10, And the air inlet pipe, the flow control valve body, the discharge pipe and the check valve are provided by an integral body. The method of claim 7, wherein The check valve is a breast pump, characterized in that the ball check valve.