KR100886204B1 - Solenoid Pressure Pump - Google Patents

Abstract

The present invention relates to a solenoid pressure pump, and an object of the present invention is to provide a solenoid pressure pump that can pressurize a fluid with a simpler structure and can selectively pressurize a fluid by a solenoid. To this end, in the pressure pump for discharging the fluid by applying pressure to the fluid, a hollow valve housing 21 in which the induction coils 22 and 23 are wound, and an elastic tool 26 installed inside one side of the valve housing 21. ) And a hollow moving spindle 27 which is positioned at one end of the elastic sphere in the valve housing and is provided with permanent magnets 27a and 27b on one side of the outer circumference and interlocks with the induction coil, and the valve housing. It is installed to be movable inside one end of the moving spindle, the one end is penetrated through the hollow portion (28g), the oil through hole (28e) is penetrated to the side and the piston end (28b) is located at the other end of the piston head It characterized in that it comprises a pressing piston 28, the discharge groove groove portion 28c is formed in the groove on the outer periphery.

Description

Solenoid Pressure Pump

1 is a cross-sectional view of a conventional non-return solenoid pump.

2 is a cross-sectional view of a solenoid pressure pump for selectively pressurizing a fluid according to an electrical signal according to the present invention.

3 to 4 is a side cross-sectional view showing an enlarged state of the assembly of the moving spindle and the pressure piston of the piston assembly according to the present invention a perspective view of the pressure piston.

Figure 5 is an enlarged cross-sectional view of the check valve applied to the solenoid pressure pump according to the present invention.

Explanation of symbols on the main parts of the drawings

21: valve housing 26: elastic sphere

27: moving spindle 28: pressure piston

30: check valve

The present invention relates to a solenoid pressure pump for discharging by applying pressure to a fluid. The present invention relates to a solenoid pressure pump having a solenoid and a permanent magnet and applying a pressure to the fluid by controlling the solenoid.

A solenoid pump, which is a general application type of a pressure pump using a solenoid, is a pump using a magnetic material and an electric induction coil. When a power is applied to the induction coil, a magnetic force is generated in the induction coil, thereby allowing the magnetic material to reciprocate and suck the fluid. And a pump configured to discharge. Due to this operation principle, the solenoid pump is widely used in applications requiring small capacity and high pressure, for example, fuel injection pump, etc., because the structure of the solenoid pump is simpler and smaller than the conventional pump.

1 shows an example of a conventional non-return solenoid pump.

Reference numeral 1 is a housing, which has an upper cover 11 and a lower cover 12. The upper cover 11 is formed in a ring shape and the lower part is open. In addition, the lower cover 12 is formed in a ring shape corresponding to the upper cover 11 and has an open top. Therefore, when the openings of the upper cover 11 and the lower cover 12 are coupled to each other, a space is formed between the upper cover 11 and the lower cover 12. An induction coil 2 wound around a bobbin (not shown) is installed in a space formed as described above.

On the other hand, an inlet 4 for introducing a fluid is provided in the lower part of the housing 1, and the inlet 4 is provided with a suction valve 41. Therefore, the fluid flows into the housing 1 as the intake valve 41 is opened. In addition, an upper portion of the housing 1 is provided with a discharge part 5 for discharging the fluid introduced into the housing 1, and the discharge part 5 is provided with a discharge valve 51. In the hollow of the housing 1, the magnetic body plunger 6 is installed up and down reciprocally in order to suck the fluid into the housing 1 and pressurize and discharge the sucked fluid to the discharge part 5 according to the up and down movement. The magnetic plunger 6 is formed in a substantially cylindrical shape, and a flow path 61 is formed in the upper and lower sides thereof, and a flow path discharge valve 62 is installed at an upper end of the flow path 61, and the magnetic plunger 6 is installed. The space formed between the magnetic plunger 6 and the inlet portion 4 serves as the low pressure portion 17, and the space formed between the magnetic plunger 6 and the discharge portion 5 is the high pressure portion 16. Acts as)

Therefore, when power is applied to the induction coil (2), a magnetization force is generated, and thus the magnetic plunger 6 moves up and down. When the upper portion of the magnetic plunger 6 is moved, the suction valve 41 is opened by the suction force, but the flow path discharge valve 62 installed on the upper end of the flow path 61 of the magnetic plunger 6 is closed, so that the fluid is inlet ( It flows into the flow path 61 of the low pressure part 17 and the magnetic body plunger 6 via the flow path of 4). That is, when the upper portion of the magnetic plunger 6 is moved, the pressure decreases in the low pressure portion 17 according to the increase in the volume of the low pressure portion 17 relative to the high pressure portion 16 as well as the supply pressure of the fluid itself to the inlet portion 4. As a result, the fluid can flow into the low pressure portion 17 in a low pressure state. In addition, since the discharge valve 51 is opened during the upper movement of the magnetic plunger 6, the fluid present in the high pressure portion 16 is pressurized according to the upper movement of the magnetic plunger 6 and discharged through the flow path of the discharge portion 5. .

On the other hand, when the magnetic plunger 6 is moved downward, the intake valve 41 is closed to prevent the fluid present in the low pressure portion 17 from flowing back to the inlet portion 4 and the magnetic body by the water pressure at this time. The flow path discharge valve 62 of the plunger 6 is opened and the discharge valve 51 of the discharge part 5 is closed. Accordingly, the water present in the flow path 61 of the low pressure portion 17 and the magnetic plunger 6 moves toward the high pressure portion 16.

However, in the solenoid pump, the fluid supply to the low pressure portion 17 is made only when the magnetic plunger 6 moves upward, and the suction valve 41 is closed when the magnetic plunger 6 moves downward. There is no supply of fluid. The solenoid pump is generally operated at a very high speed. When the fluid is supplied only at the upper movement of the plunger as described above, the supply of sufficient fluid is impossible and the efficiency decreases, which leads to a loss of lifting pressure.

In addition, since all three check valves are used, not only the structure is complicated but also the manufacturing is difficult, and there is a problem in that the productivity is lowered.

Accordingly, another object of the present invention is to provide a solenoid pressure pump capable of pressurizing a fluid with a simpler structure and selectively pressurizing the fluid by a solenoid.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.

Solenoid pressure pump of the present invention to solve the above problems, in the pressure pump for applying pressure to the fluid, the hollow valve housing 21, the induction coil (22, 23) is wound, and the valve housing ( 21 is provided on one side of the elastic sphere 26, and the inside of the valve housing is located at one end of the elastic sphere, the outer peripheral one side is provided with a permanent magnet (27a, 27b) is a hollow interlocking with the induction coil The movable spindles 27 and the valve housings are installed to be movable inside one end of the movable spindles, one end of which passes through a hollow portion 28g and an oil through hole 28e penetrates through the other side thereof. It characterized in that it comprises a pressure piston 28, the piston head 28b is positioned while the discharge groove groove portion 28c is formed in the groove on the outer periphery of the piston head.

Permanent magnets (27a, 27c) are installed on both outer periphery of the moving spindle to provide a solenoid pressure pump, characterized in that the moving spindle is easily moved by the magnetic flux in the valve housing.

The pressure piston 28 provides a solenoid pressure pump, characterized in that the hemispherical protrusion 28f protrudes from the back of the piston head to induce a smooth inflow of oil.

An elastic rubber ring 29 is installed on the outer circumferential surface of the pressure piston so that the inner side of the moving spindle and the pressure piston are spaced at a predetermined interval, thereby providing a solenoid pressure pump, which reduces noise and wear during movement of the pressure piston.

Both ends of the valve housing provides a solenoid pressure pump, characterized in that the check valve 30 is installed.

The check valve has a check valve housing 31 through which the inner diameter of the end portion of the oil outflow side is larger than the inner diameter of the end portion of the oil inflow side, and is located in the check valve housing so as to be movable within the check valve housing. The outer diameter of the check sheet 32 is formed larger than the outer diameter of the oil inflow side, and the elastic sphere 33 is provided on one end of the check sheet toward the oil outflow from the inside of the check valve housing Provides a solenoid pressure pump.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the illustrated drawings.

2 is a cross-sectional view of a solenoid pressure pump for selectively pressurizing a fluid according to an electrical signal.

The solenoid pressure pump of the present invention is to discharge pressure by applying pressure to a fluid, and is provided with a solenoid and a permanent magnet to control the solenoid to apply a pressure to the fluid. The solenoid pressure pump comprises a valve housing, an elastic sphere, a moving spindle and a pressure piston.

The valve housing 21 is formed in a hollow shape and the induction coils 22 and 23 are wound in two places on both sides of the outer circumference. On both sides of the outer periphery of the valve housing, the recesses 24 and 25 are divided into two grooves, and the first and second guide coils 22 and 23 are wound in the longitudinal direction to form electromagnets.

An elastic tool 26 is installed at one inner side of the valve housing 21, and a movable spindle 27 is installed at the other side of the valve housing 21 in line with the elastic tool 26. In the present invention, the elastic sphere uses a coil spring but can impart an elastic force to the moving spindle in the valve housing, and other elastic spheres may be used.

The moving spindles 27 are formed in a hollow shape to form an internal flow path through which oil can flow, and the first and second permanent magnets 27a and 27b are installed on one side of the outer circumferential side and installed with the first and second induction coils. Each pair is linked. The moving spindles 27 are regularly spaced apart from the inside of the valve housing 21 to move in the longitudinal direction inside the valve housing. A third permanent magnet 27c is installed at the other outer circumferential side of the moving spindle 27.

When power is applied to the first induction coil 22, the polarity is opposite to that of the first permanent magnet 27a, thereby forming magnetic flux so that mutual attraction works. On the contrary, when the power is applied, the second induction coil 23 has a second polarity. The same polarity as the permanent magnet (27b) to form a magnetic flux so that mutual repulsive force acts.

The first, second, and third permanent magnets are spaced apart from the inner circumferential surface of the valve housing by a predetermined repulsion with the second induction coil 23 at a predetermined interval. In this state, when power is applied to the solenoid, the moving spins are moved while minimizing friction between the inner surface of the valve housing and the outer surface of the moving spindles. By installing permanent magnets on both outer peripheries of the moving spindles, the moving spindles are movable inside the valve housing without being affected by friction even if the inner surface of the valve housing and the outer surface of the moving spindles are not precisely machined.

A narrowing end 27d is formed at the end of the moving spindle in which the oil flows (the right end of FIGS. 2 and 3) to restrain the pressure piston. The narrowing end is formed to protrude into the ends of the moving spindles.

3 and 4 are side cross-sectional views showing the assembly state of the moving spindle 27 and the pressing piston 28, and a perspective view of the pressing piston 28.

The pressurized piston 28 is installed to be movable inside one end of the moving spindles in the valve housing. The pressure piston is formed by forming a piston head 28b and a piston flange 28d at both ends of the piston body 28a.

A pressurized piston is inserted into one end of the movable spins 27 so that the piston body 28a can slide at the narrow end 27d of the movable spindle 27. The piston head is larger than the diameter of the piston body and smaller in diameter than the inner diameter of the moving spindle, the piston body is smaller in diameter than the inner diameter of the narrowing end. The piston flange is larger in diameter than the diameter of the piston body and larger than the inner diameter of the moving spindle. The pressurized piston is moved together with the moving spins by the narrowing end to pressurize the oil.

A hollow portion 28g penetrates inside the piston body and the piston flange, an oil through hole 28e penetrates through the side of the piston body, and a discharge groove 28c is formed in the outer periphery of the piston head. Here, the direction in which the piston is installed in the moving spindle of the piston is the direction toward the elastic sphere 26. Oil flows into and out of the moving spindle, which flows through the pressure piston into the moving spindle. The oil flows into the hollow portion of the pressurized piston and is moved to the side of the piston body through the oil through hole, and then flows into the moving spindle through the discharge recess of the piston head.

In the pressure piston 28, a hemispherical protrusion 28f protrudes from the rear surface of the piston head to induce smooth inflow of oil. An elastic rubber ring 29 is installed at the contact portion between the moving spindle and the pressure piston. That is, the rubber ring 29 is installed at the joint portion of the piston head 28b and the piston flange 28d on the outside of the piston body to reduce the noise and wear generated at the contact portion and the contact portion when the pressure piston is operated. desirable.

Check valves 30 are installed at both ends of the valve housing. The check valve includes a check valve housing 31, a check seat 32, and an elastic ball 33.

The check valve housing 31 penetrates larger than the inner diameter of the end portion of the oil outflow side of the check valve housing 31. The boundary between the inner diameter of the oil outflow side and the inner diameter of the oil inflow side of the check valve housing is inclined.

The check seat 32 is movably positioned inside the check valve housing, and the outer diameter of the oil outflow side is larger than the outer diameter of the oil inflow side. The boundary between the outer diameter of the oil spill side and the outer diameter of the oil spill side of the check sheet is formed to be inclined. If the inner diameter inclined part of the check valve housing and the outer diameter inclined part of the check seat are in contact with each other, the oil does not flow. The oil inlet groove 32a is formed in the check sheet so that the oil flowing therein pushes the check sheet by inertia. The oil inlet groove is formed in the groove on the side where the oil flows in the check sheet.

The elastic sphere 33 is installed at one end of the check sheet toward the oil outflow from the inside of the check valve housing. In the present invention, the elastic sphere uses a coil spring, but it is possible to impart an elastic force to the moving spindle inside the check valve housing, and other elastic spheres may be used. The elastic sphere pushes the check seat so that the inner diameter inclined portion of the check valve housing and the outer diameter inclined portion of the check sheet come into contact with each other. The check valves 30a and 30b provided at both ends of the valve housing are installed in the same structure and in the same direction.

Looking at the operation of the solenoid pressure pump according to the present invention made as described above are as follows.

The oil flowing into the solenoid pressure pump flows into the valve housing through the check valve 30a and the pressure piston, and then flows out through another check valve 30b by the action of the induction coil and the permanent magnet.

When oil flows through the check valve (30a), the oil first flows into the oil inlet groove and pushes the check sheet receiving the elastic force. When the check sheet is pushed out due to the inertia of the incoming oil, the inner diameter inclined portion of the check valve housing and the outer diameter inclined portion of the check sheet are separated. At this time, the oil is introduced between the inner surface of the check valve housing and the outer surface of the check seat.

The oil passing through the check valve flows into the hollow portion 28g of the pressure piston 28 and flows through the oil through hole along the surface of the hemispherical protrusion 28f. The oil flowing into the oil through hole 28e flows into the valve housing through the discharge recess 28c of the piston head 28b.

After oil is introduced into the valve housing, when power is applied to the first and second induction coils 22 and 23, between the first and second induction coils 22 and 23 and the first and second permanent magnets 27a and 27b, respectively. Attraction and repulsion are at work.
In other words, by generating different electrodes in the first induction coil 22 and the second induction coil 23, the first and second permanent magnets 27a and 27b and the attraction force and the repulsive force can act simultaneously. In the first induction coil 22 generates the opposite pole to the first and second permanent magnets (27a, 27b), and the second induction coil (23) the same pole as the first and second permanent magnets (27a, 27b) Generate.
As such, when the electrodes opposite to the first induction coil 22 and the second induction coil 23 are generated, they are generated between the first induction coil 22 and the first and second permanent magnets 27a and 27b. Due to the repulsive force generated between the attraction force and the second guide coil 23 and the first and second permanent magnets 27a and 27b, the moving spindle 27 overcomes the elastic force of the elastic sphere 26 toward the check valve 30b. Is moved.
When the moving spindle 27 is moved toward the elastic sphere, as the narrowing end portion 27d moves the piston head 28b in the same direction, the moving piston 27 moves the pressure piston 28 to move the inside of the moving spindle 27 and the valve housing. 21 pressurizes the oil introduced into the check valve (30b).

When the oil is pressurized by the moving spindle 27 and the pressure piston 28 to the check valve 30b, the oil flows into the oil inlet groove and pushes the check sheet which is being subjected to elastic force. When the check sheet is pushed out due to the inertia of the incoming oil, the inner diameter inclined portion of the check valve housing and the outer diameter inclined portion of the check sheet are separated. At this time, the oil flows out between the inner side of the check valve housing and the outer side of the check seat and is completely discharged from the valve housing.
At this time, when the narrowing end 27d of the moving spindle 27 moves the pressurized piston 28, the narrowed end 27d closes the oil through hole 28e of the pressurized piston 28 so that the oil It is prevented from moving in the reverse direction.
As such, when the oil is prevented from moving in the reverse direction, while the oil introduced into the moving spindle 27 is pressurized in the discharge direction, the discharge end check valve 30b is opened to discharge the oil, and at the same time, the inlet check valve ( 30a) is opened by pressure to introduce new oil.

On the other hand, when the power applied to the first and second guide coils 22 and 23 is cut off, the moving spins are moved to the oil inlet side by the restoring force of the elastic sphere 26 and returned to their original positions. When the moving spindles return, the narrow end 27d pulls the piston flange 28d to move the pressure piston 28 to the oil inlet side.
At this time, the narrowing end portion 27d opens the oil through portion 28e so that the newly introduced oil is moved into the moving spindle 27.

If the pressurized piston does not operate, the check seat is in close contact with the inclined surface of the check valve housing by the restoring force of the resilient sphere of the check valve. When the check seat is in close contact with the check valve housing, the spilled oil does not flow back into the valve housing, and oil remaining in the valve housing cannot flow back to the oil inlet side of the valve housing.

While the invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, the invention is not limited to the construction and operation as shown and described. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

The present invention having the above-described configuration can pressurize the fluid with a simpler structure, and provides the effect of selectively pressurizing the fluid by the solenoid.

Claims (6)

In the pressure pump to discharge the fluid by applying pressure, A hollow valve housing 21 in which induction coils 22 and 23 are wound, and check valves are respectively provided at both ends of the oil inlet and the oil outlet; The inlet end portion 27d is moved along the inside of the valve housing by the magnetic force of the induction coil, and the inside is hollow to protrude an inner surface thereof, and permanent magnets 27a and 27b are installed on the other side of the outer circumference. Moving spindles 27; An elastic sphere (26) installed at the other side of the valve housing (21) to press the moving spins to one side; And One end of the moving spine is formed so as to be movable a predetermined distance in the longitudinal direction inside the one end is formed, one end is formed with a hollow portion (28g) through which the inside is penetrated, the side is in communication with the oil through the hollow portion 28e is formed, and the other end includes a pressure piston 28 having a piston head 28b having a plurality of discharge grooves 28c formed along its outer circumference, The attraction magnet or repulsive force is applied to the permanent magnet by the operation of the guide coil to move the moving spins along the inside of the valve housing, and the pinching end of the moving spins contacts the piston head to move the pressure piston. Since the narrowing end is moved while closing the oil through hole, it is pressurized while preventing oil from flowing backward in the valve housing, and discharged through the check valve 30b located at the oil discharge end. New oil is introduced through the check valve (30a), When the induction coil is stopped, the moving spindle and the pressing piston are moved in opposite directions by the compressed elastic sphere, but the inflow end of the moving spindle moves to open the oil passage of the pressing piston. Solenoid pressure pump, characterized in that flowing into the moving spindle. The method of claim 1, Solenoid pressure pump, characterized in that the permanent magnets (27a, 27c) is installed on both outer periphery of the moving spines are moved by the magnetic flux in the valve housing. The method of claim 1, Solenoid pressure pump, characterized in that the hemispherical projection (28f) is formed protruding on the back of the piston head of the hollow piston in the pressure piston (28) to induce the smooth inflow of oil. The method of claim 1, Solenoid pressure pump, characterized in that the elastic rubber ring 29 is installed on the outer circumferential surface of the pressure piston so that the inner surface of the moving spindle and the pressure piston is spaced at a predetermined interval to reduce the noise and wear during the movement of the pressure piston. The method of claim 1, Solenoid pressure pump, characterized in that the check valve 30 is installed at both ends of the valve housing. The method of claim 5, The check valve has a check valve housing 31 through which the inner diameter of the end of the oil outflow side is larger than the inner diameter of the end of the oil inflow side, and a side in which the oil flows out while being movably positioned inside the check valve housing. It includes an outer diameter of the check sheet 32 is formed larger than the outer diameter of the oil inflow side, and the elastic sphere 33 is installed on one end of the check sheet toward the oil outflow from the inside of the check valve housing Solenoid pressure pump characterized by.

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