KR101209394B1 - Electrical Breast Pumping System - Google Patents

Abstract

      The present invention is a device for automatically milking breast milk from the mother's breast by using the vacuum pressure (negative pressure) generated by the reciprocating motion of the piston of the mother's breast milk, the vacuum pressure (negative pressure) generated in the forward and backward movement of the piston The present invention relates to a high-efficiency electric breast milking machine that doubles the vacuum (-) pressure generating ability, and the electric breast milking machine according to the present invention comprises: a motor unit for generating a power source by converting a rotational movement of the motor into a linear reciprocating motion; A double-acting cylindrical pump unit for generating vacuum pressure (negative pressure) and air pressure (positive pressure) by a piston reciprocating motion; The vacuum pressure (negative pressure) and air pressure (positive pressure) generated in the cylinder are separated by four non-return valves installed before and after the cylinder, and each separation connects the same pressure [vacuum pressure (negative pressure), air pressure (positive pressure)]. Pressure summing unit connected by two pipes; A pressure branch for branching the vacuum pressure (negative pressure) to the two inlets so as to simultaneously milk the breasts using the vacuum pressure (negative pressure); Connected to the end of the hose branched from the middle part of the hose connected between the pressure summing part and the pressure branch part, and closes the valve in a short moment by the force of the electromagnet to introduce atmospheric pressure to destroy the vacuum pressure (negative pressure) and prevent it again. The solenoid valve portion; A control unit configured of an electronic component such as a microcomputer and an operation switch for storing a program to select a motor operation and an operation state; A pressure regulating unit composed of a rotary pressure regulating device connected to the branch to adjust the vacuum pressure (negative pressure); And a control unit.

Description

Electric Breast Pumping System

The present invention relates to an electric breast milking machine. More specifically, the vacuum pressure (negative pressure) and the air pressure (positive pressure) generated by the piston reciprocating motion are separated by using four non-return valves mounted on the front and the back of the cylinder. Electric breast milking machine which has the effect of continuously generating the vacuum pressure (negative pressure) by adding the same pressures through the pipes formed on the upper and lower sides of the vacuum pressure (negative pressure) and the air pressure (positive pressure) separated before and after the cylinder. to be.
In general, breast milkers (also known as breast pumps) are devices for breastfeeding and storing mothers who feed their infants' breast milk, when the mother is suffering from excessive breast milk and the mother feels painful. In addition, it is used to reduce the amount of breast milk or to increase the amount of breast milk. It is currently commercially available in various forms, and is classified into manual and electric motors according to the type of power source.

In addition, the electric breast milking machine is largely divided into a piston system having a motor and an air cylinder, and a method of milking breast milk by a vacuum pressure (negative pressure) generated by using a DC motor and a diaphragm vacuum pump.

The electric breast milking machine is configured to store milk in a storage container after the milk is milked and collected through a funnel-type inhaler covered by the mother's breast using a vacuum pressure (negative pressure).

    Referring to FIGS. 3 and 5, the piston milking machine milks breast milk from the breast using a vacuum pressure (negative pressure) generated when the piston is pulled at a constant rotational speed, and the piston Milking is carried out by forcibly pushing the breast milk collected in the inhaler to the breast milk collection bottle mounted in the lower part of the inhaler by using the air pressure (positive pressure) generated when pushing. That is, the vacuum pressure generated when the piston descends from the top dead center to the bottom dead center generates pressure (negative pressure) that sucks the mother's breast through an external hose. As a result, breast milk flows out of the mother's breast, and when the piston reaches the bottom dead center, air is introduced into the cylinder to release pressure. In addition, when the piston moves from the bottom dead center to the top dead center, air pressure (positive pressure) is generated, which is not transmitted to the mother's breast, but rather to transfer the milk collected in the inhaler to the storage container by the air barrier membrane in the inhaler. It is composed. Therefore, the milk is squeezed at regular intervals according to the reciprocating motion of the piston, and it operates to repeat the cycle flowing to the storage container.

However, the piston method had the following problems. 1) It is not possible to induce milking (let-down reflex), which occurs naturally according to the mother's milk production (when the baby sucks the milk shortly and sucks quickly to suck the mother's milk at the beginning of feeding. Do. 2) Inhalation and suction force destruction occurs regularly, it is impossible to massage using irregular suction cycles to loosen the breasts such as congestion. 3) When milked milk flows back into the cylinder, it often happens that the milk flows back into the reservoir through the hose and inhaler.
4) Due to the vacuum pressure (negative pressure) and air pressure (positive pressure) that occur alternately when the piston reciprocates, the piston suddenly sucks due to the vacuum pressure (negative pressure) formed in the cylinder at the upper limit of the crankshaft. The impact of repetitive phenomena of sudden decrease and increase of the load causes severe noise and vibration, and the irregular motor load causes the increase of power consumption and shorten the life of the equipment.

In addition, the diaphragm vacuum pump method also had the following problems. 1) Due to the small amount of suction force generated by the short stroke, the pressure is controlled by the rotational force of the motor, making it difficult to freely control the suction pressure control, which is most important in breast milking. 2) It is inevitable to use DC motor for speed control for pressure control, separate adapter for current conversion, and short life of DC motor itself. 3) There were various problems such as heavy weight due to large size of breast milking machine and vibration noise caused by eccentricity of crank rod.

The present invention for solving the above problems, to improve the user's convenience, to solve the above-mentioned problems by applying the AC motor to the piston system with good efficiency of the pump, the appearance increase by using the adapter, the service life of the motor We solved the problem of short DC motor and the increase of production cost.

In addition, four backflow check valves are installed symmetrically in the front, rear, and top of the cylinder, and a connecting pipe for summing the same pressure before and after the cylinder is installed to check the vacuum pressure (negative pressure) and air pressure (positive pressure) generated before and after the cylinder. Separate the pressures of the same type and place them in one place so that a continuous vacuum pressure (negative pressure) is generated, and the air pressure (positive pressure) is configured to be discharged into the atmosphere. In addition, due to the same vacuum pressure (negative pressure) generated before and after the cylinder, there was no pressure difference between the cylinder and the cylinder, which solved the problems of vibration, noise, and power load imbalance of the motor.

In addition, by applying an electronic valve, the suction cycle (cycle) that is most suitable for breast pumping and massage can be programmed to induce the injection reflection response by the user's choice, and the irregular suction cycle can be operated to maximize the massage effect. .

In addition, by applying a needle valve type pressure regulating device that finely regulates the vacuum pressure (negative pressure) by introducing atmospheric pressure into the cylinder, the user can arbitrarily adjust the pressure without being affected by the suction cycle, thereby preventing teat wounds caused by excessive pressure. The above-mentioned problems are solved by applying the principle and the structure to prevent and increase convenience and milking effect.

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According to the present invention, the following effects can be obtained when the method of the above-mentioned problem solving means is applied and operated. Referring to (b) the milking method of FIG. 5, the uniform vacuum pressure (negative pressure) is continuously generated, and as the generation amount is doubled compared to the existing method, the size of the cylinder used in the existing product is reduced. It can provide better performance and reduce power consumption by using small power source. In addition, the program can be applied to a variety of milking cycles (cycles), thereby increasing the convenience of induction of the injection reflection reaction and the expansion of the selection of the pumping function according to the user's body type. In addition, the application of a separate solenoid valve enables irregular intermittent operation by a program, thereby providing a more effective massage function to the user.
Due to the reciprocating motion of the piston, the air pressure (positive pressure) and the reversed breast milk generated before and after the cylinder are discharged to the atmosphere through the designated outlet, so that harmful microorganisms and odors caused by the reversed breast milk are prevented. The problem of being mixed with the breast milk storage container has been solved, so that hygienic breast milk can be fed to the baby. In addition, since the same vacuum pressure (negative pressure) is generated before and after the cylinder, there is no pressure difference, thereby eliminating vibration, noise problems, and irregular load problem of the motor.

And since the AC motor can be applied for the above technical use, it operates the piston at a fixed RPM, and it is possible to apply an endless pressure regulating device using a separate needle valve, so that the existing vacuum pressure (negative pressure) and suction cycle (cycle) It solves the difficult problem of separate adjustment, can program a variety of operation options, and can reduce the production cost by miniaturizing the product, reducing the weight, and simplifying the structure.

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1 is an assembly view showing the overall configuration of the electric breast milking machine.
2 is a conceptual diagram to help understanding of the present invention
Figure 3 is an air flow chart showing the flow of the vacuum pressure (negative pressure) and air pressure (positive pressure) of the conventional cylindrical milking machine of the present invention and the milking machine of the present invention.
Figure 4 is an exploded view and a perspective view of the non-return valve showing the detailed configuration of the pump unit and the pressure summing unit of the present invention electric milking machine.
5 is a graph comparing the generation and operation of vacuum pressure between the existing breast milking machine and the milking machine of the present invention.
6 is an exploded perspective view showing an inhaler, an air barrier holder, an air barrier, and a storage container of an electric breast milking machine.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the electric breast milking machine according to the present invention.

Referring to Figure 1 showing the overall structure and Figure 2 is a conceptual diagram to help understanding of the present invention, the electric breast milking machine of the present invention, the motor unit 100 for converting the rotational motion of the motor into a reciprocating motion of the pressure generating cylinder In the pump unit 200 for generating a vacuum pressure (negative pressure), the pressure summing unit 300 for summing the pressures up and down the piston, the pressure branch 400 for dividing the vacuum pressure (negative pressure) into two, and the cylinder 220. The lower case 700, which is formed integrally with the solenoid valve unit 500 for destroying the vacuum pressure (negative pressure), the control unit 900 for controlling the pressure intensity control unit 800, the motor and the solenoid valve, etc. ) Is mounted and consists of an upper case 1000 covering all the above-mentioned parts. Meanwhile, an inhaler 1200 which connects a flexible connection hose 430 from the pressure branch 400 to the outside of the electric breast milking machine for breast milk and adheres to the mother's breast to suck up breast milk and the inhaler 1200 It is connected to the lower side to help generate vacuum pressure (negative pressure), and temporarily collect the milk milk, and then to the storage container (1300) air blocking film 1220 and the air blocking film holder for fixing the air blocking film (1220) ( 1210, and a storage container 1300 for storing breast milk discharged through the air barrier film 1220.

The inhaler 1200 is formed in a funnel shape, the lower end of the inhaler 1200, the air blocking membrane holder 1210 for discharging the sucked breast milk to the storage container 1300 and the air blocking membrane of a flexible material for opening and closing the outlet ( 1220 is installed, and the storage container 1300 may be made of, for example, a bottle or a breast milk storage pack. The inhaler 1200 and the storage container 1300 are generally widely used in breast milking machines.

The detailed configuration and role of each component will be described.
The motor unit 100 is connected to the circular rotating plate 110 as a commercial product in which a motor and a reducer are integrated, and converts the rotary motion into a linear reciprocating motion to the piston rod 210 and transmits it.
The pump unit 200 has a general configuration in which a piston 240 for generating pressure is configured in the cylinder 220, but two connecting pipes 250a and 250b are separated to enable mutual gas flow above and below the cylinder 220. ) Is added and is integrally constructed. One of the two connecting pipes (250a) of the negative pressure inlet port 330a for the suction of the vacuum pressure (negative pressure), and the other one of the pipes (250b) positive pressure outlet for the discharge of air pressure (positive pressure) 330b are each configured on the passage of the connecting pipe.
The pressure summing unit 300 is formed at both ends of the cylinder 220 to add up the pressure generated during the reciprocating motion of the piston 240, and the two connecting pipes 250a and 250b for summing the pressures. One at each inlet, ie, four check valves 340a, 340b, 340c, and 340d, are symmetrically fixed.
The pressure branch unit 400 generates a vacuum pressure (negative pressure) from the pump unit 200 to separate the vacuum pressure (negative pressure) provided through the pressure summing unit 300 into one or two, and optionally, an inhaler outside the device ( 1200, and is connected to the solenoid valve 500 for the vacuum destruction.
The solenoid valve unit 500 opens and closes the valve at a predetermined interval according to the control signal of the control unit 900. In the present invention, the inhaler may be opened through the pressure branch 400 at the moment the valve is opened using a three-way solenoid valve. 1200) As the atmospheric pressure flows into the chamber, the vacuum pressure is destroyed. At this time, the air blocking membrane 1220 mounted on the air blocking membrane holder 1210 in which breast milk milked from the mother's breast is temporarily collected is discharged to the storage container 1330 while the air blocking membrane 1220 is opened by atmospheric pressure.
The pressure regulating unit 800 is a mechanical device that allows fine air to be introduced in accordance with the rotation of the knob to adjust the vacuum pressure (negative pressure) and is configured as a general needle valve.
The control unit 900 supplies a signal for controlling the solenoid valve unit 500, various lamp signals, and power by referring to a signal such as an operation switch by a microcomputer mounted on a PCB board.
4 is an exploded view of the pump unit 200 and the pressure summing unit 300 which are the core of the present invention. As shown in FIG. 4, the pump unit 200 includes two connecting pipes 250a and 250b separated up and down outside the cylinder 220 in parallel with the cylinder 220, and the pressure summing unit 300 includes a cylinder ( Four check valves 340a, 340b, 340c, and 340d for controlling the flow of gas flowing into the connection pipes 250a and 250b are located at both ends of the connection pipes 250a and 250b. It is a structure that is located. In this case, a fixing plate is required for fixing the four non-return valves 340a, 340b, 340c, and 340d, and the end of the cylinder 220 has a rubber packing 370 and a fixing plate 330, and a piston rod 210. The side is composed of rubber packing (350, 360) and the fixed plate (310, 320) to prevent the loss of gas.
In addition, the non-return valves 340a, 340b, 340c, and 340d all have the same structure and protrude the edge 343 for fixing to the lower portion of the cylinder 344 as shown in FIG. The upper surface is provided with a symmetrical inclined surface 342 so that the ends of the inclined surface 342 are gathered in a straight line to form a fine cut 341 at the end thereof. When the non-return valve of such a structure is made of a flexible material such as silicon, gas may flow in the direction of the cutout portion 341 due to the pressure generated inside the cylinder 344, but on the contrary, it is generated outside the cutout portion 341. The pressure is characterized by applying the principle that gas can not flow in the direction of the cylinder 344 by closing the cutout 341.
On the other hand, the fixed plate 330 located at the end side of the cylinder 220 has a negative pressure suction port 330a for suctioning the vacuum pressure (negative pressure) in the cylinder 220 is configured on the path of the connecting pipe 250a, and the air pressure Positive pressure outlet 330b for (positive pressure) discharge is comprised on the path | route of the remaining connection pipe 250b.

Hereinafter, the operation of the present invention will be described in detail with reference to FIG.
When the rotational force generated in the motor unit 100 causes the piston 240 to reciprocate through the rotating plate 110 and the piston rod 210, the vacuum pressure (negative pressure) and air pressure (positive pressure) inside the sealed cylinder 220. Pressure occurs simultaneously.
That is, when the piston 240 moves from the bottom dead center to the top dead center (from front to back of FIG. 3B), the air pressure (positive pressure) in the cylinder 220 is connected to the connection pipe 250b and the non-return valve 340d and It is discharged out through the positive pressure outlet 330b and at the same time the check valve 340c is closed. At the same time, the vacuum pressure (negative pressure) generated in the cylinder 220 acts as a pressure for squeezing milk by acting on the external inhaler 1200 through the connection pipe 250a, the non-return valve 340a, and the negative pressure inlet 330a. At the same time, the non-return valve 340b is closed.
On the contrary, when the piston 240 moves from the top dead center to the bottom dead center (forward from the back of FIG. 3B), the air pressure (positive pressure) is connected to the connection pipe 250b, the non-return valve 340d, and the positive pressure outlet 330b. Is sent out through and at the same time closes the non-return valve (340a). At the same time, the vacuum pressure (negative pressure) generated in the cylinder 220 through the connection pipe 250a and the non-return valve 340c acts on the external inhaler 1200 through the negative pressure inlet 330a to act as a pressure for milking. At the same time, the check valve 340d is closed. Operation according to the cycle stroke of each of the non-return valves 340a, 340b, 340c, and 340d is shown in a table of FIG.
In this way, while the reciprocating motion of the piston 240 forms a cycle, the air pressure (positive pressure) continues to be discharged out, and the vacuum pressure (negative pressure) continues to act as a pressure for milking. Therefore, if the reciprocating motion of the piston 240 is made continuously, since the vacuum pressure (negative pressure) continues to accumulate, the vacuum pressure (negative pressure) can be adjusted in strength by temporal control.

Referring to Figure 5 (b), in the milking method according to the present invention, if the reciprocation of the piston is made continuously, the air pressure (positive pressure) is continuously discharged to the atmosphere and the vacuum pressure (negative pressure) accumulates continuously do. However, in order to use milking pressure, the vacuum pressure (milk pressure) and the atmospheric pressure for milking must cross at regular intervals. Therefore, in the present invention, the solenoid valve unit 500 is opened and closed by a program stored in the microcomputer of the controller 900 in order to destroy the accumulated vacuum pressure. The solenoid valve 500 of the present invention is configured to perform an on, off operation according to a control signal by using a conventional solenoid valve, thereby providing various breast milking functions. That is, while the vacuum pressure (negative pressure) is accumulated by vacuum pumping, the solenoid valve part 500 is kept closed, and when the solenoid valve part 500 is opened by the control signal of the controller 900 at a predetermined time. As the atmospheric pressure flows into the inhaler 1200 through the pressure branch 400, the vacuum is discarded. Therefore, for example, if the solenoid valve has three on / off times of 500ms / 500ms, 1000ms / 500ms, and 1500ms / 500ms, the longer the on time, the higher the accumulated vacuum pressure will be. Three modes can be provided: strong milking. Therefore, in the present invention, it is possible to provide a breast milking machine having various modes by simply controlling the vacuum pressure generated continuously.

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100: motor portion 110: rotating plate
200: pump portion 210: piston rod
220: cylinder 240: piston
250a, 250b: connector 300: pressure adding part
310, 320, 330: fixed plate 330a: negative pressure inlet
330b: positive pressure outlet 341: incision
340a, 340b, 340c, 340d: non-return valve
350, 360, 370: Rubber packing 400: Pressure branch
500: solenoid valve 700: lower case
800: pressure control unit 900: control unit
1000: upper case 1200: inhaler
1210: air barrier holder 1220: air barrier
1300: storage container

Claims (4)

In the breast milking machine which milks breast milk from the mother's breast by using the vacuum pressure generated in the cylinder by causing the piston movement by the rotational force of the motor,
An electric breast milking machine, characterized by comprising a continuous vacuum pressure generating means which continuously uses forward and reverse pressures generated at the time of forward and backward movement of the piston as milking pressure.        The method of claim 1, wherein the continuous vacuum pressure generating means is configured in parallel with the cylinder 220, the closed cylinder 220 for generating a bidirectional pressure by the reciprocating motion of the piston 240, and connects both ends of the cylinder 220 Each of the two connecting pipes 250a and 250b, which are separated from each other, is located at each end of the two connecting pipes 250a and 250b, and the non-return valve is opened and closed by the pressure generated by the movement of the piston 240 ( 340a, 340b, 340c, and 340d, a negative pressure suction port 330a positioned in an intermediate path of the connection pipe 250a for sucking continuous vacuum pressure (negative pressure) generated in the cylinder 220, and the connection pipe ( Electric breast milking machine characterized in that it comprises a positive pressure outlet (330b) for discharging the continuous air pressure (positive pressure) generated in the cylinder 220 in the intermediate path of (250b).        The method of claim 1, wherein the continuous vacuum pressure generating means is a negative pressure suction port 330a through the pressure branch 400, the atmospheric air provided through the solenoid valve unit 500 that is opened and closed by a control signal programmed in the control unit 900 Electric breast milking machine, characterized in that configured to destroy the vacuum pressure inside the inhaler (1200).          The rim of claim 2, wherein the non-return valves 340a, 340b, 340c, and 340d are opened and closed along the mounting direction by pressure generated by the movement of the piston 240. 343 protrudes and is provided with a symmetrical inclined surface 342 at the top so that the ends of the inclined surface 342 are gathered in a straight line, and have a shape in which a fine cut 341 is formed at the end. Electric breast milking machine, characterized in that.

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