JP2015068178A - Magnetic coil pump and cooling system using magnetic coil pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic coil pump of low costs and a cooling system using the magnetic coil pump, capable of reducing the number of components, being miniaturized, and simultaneously achieving high reliability and long service life.SOLUTION: A magnetic coil 1 is a magnetic coil pump having a cylinder 2, a shuttle 4, one valve 6, a permanent magnet 5 or a movable iron core, and a magnetic coil 3. The shuttle has a recessed portion at one end portion, one valve is disposed inside of the cylinder, electricity is applied to the magnetic coil disposed outside of the cylinder to magnetize the same, and the shuttle is moved by moving the permanent magnet or the movable iron core incorporated in the shuttle, to be operated as a pump. A cooling system has the magnetic coil pump 1 having one valve, a refrigerant tank, a cooling fan, and a refrigerant flow channel, and is miniaturized by improving space efficiency by arranging two or more magnetic coil pumps in series.

Description

The present invention relates to a magnetic coil pump and a cooling system using the magnetic coil pump.

  Electronic computers, personal computers, and the like are progressing in integration and speeding up of semiconductor devices, and it is necessary to suppress the temperature rise due to heat generation of the semiconductor devices in order to improve reliability. Also, in these fields, there are very strong demands for downsizing and thinning of the device itself, and cooling technology is becoming increasingly important as a key technology for meeting such demands. Conventionally, an air-cooling type is used as a cooling method for these devices. However, air cooling does not have enough performance for the significant increase in the amount of heat generated due to the high integration and speeding up of semiconductor ICs, and in recent years cooling systems using refrigerants such as water cooling have come to be adopted. .

  In a cooling system using a coolant such as a water cooling type, a pump is indispensable as a device for circulating the coolant. This pump is required to be small, highly reliable, and suppress deterioration of parts due to wear or the like. In particular, a pump having no consumable parts can sufficiently meet such a demand, and is highly expected.

  Conventional pumps include tube pumps, gear pumps, ultrasonic vibration pumps, and pumps that use diaphragms. These pumps are smaller, but their drive systems and motors are larger than expected. There is a tendency to become things. In addition, there are various disadvantages such as a worn part, a complicated and expensive drive circuit, a large number of parts, and a short life.

  In order to solve the technical problem of such a conventional pump, an electromagnetic pump or a magnetic force driven reciprocating pump operating with a driving system different from the conventional one has been proposed (for example, see Patent Documents 1 to 3). .

Japanese Patent Laid-Open No. 9-151841 JP 2001-41147 A JP 2007-40309 A

  Although the pumps described in Patent Documents 1 to 3 can improve the leakage prevention function and the fluid conveyance function, the number of parts is still large and it is difficult to manufacture an inexpensive one. Moreover, since these pumps are equipped with parts that wear, such as packing materials and seal materials, wear during use is unavoidable, and improvement is required in terms of extending the life. Furthermore, the pumps described in Patent Documents 1 and 3 include at least two valves, an inlet check valve and an outlet check valve, and the structure of the pump is somewhat complicated. Similarly, since the pump described in Patent Document 2 includes two pump chambers, it is difficult to obtain a small pump. In addition, the pump is subject to some restrictions in terms of high reliability and low cost.

  The present invention has been made in view of the above-described conventional problems, and is a low-cost magnetic coil pump that has a small number of parts, is small, can achieve high reliability and long life, and uses the same. Is to provide a cooling system.

  The present invention uses a magnetic coil and a permanent magnet or a movable iron core to move the shuttle incorporating the permanent magnet or the movable iron core by utilizing the action of repulsion and adsorption by the magnetic coil arranged in the cylinder. In the pump, by optimizing the structure and arrangement of the valve that controls the flow of liquid and simplifying the pump configuration, it is possible to achieve high pump reliability and long life while reducing the number of parts. As a result, the present invention was reached.

That is, the configuration of the present invention is as follows.
[1] The present invention is a magnetic coil pump having a cylinder, a magnetic coil, a shuttle, a permanent magnet or a movable iron core, and a single valve, the shuttle at one end and a liquid chamber in the cylinder. A recess is provided to prevent liquid from entering the gap between the shuttle and the inner wall of the cylinder when the liquid is discharged from the cylinder, and the one valve is disposed inside the cylinder, A magnetic coil pump characterized in that electricity is passed through the magnetic coil arranged outside the cylinder to magnetize it, and the shuttle is moved by moving a permanent magnet or a movable iron core built in the shuttle to operate as a pump. provide.
[2] The present invention provides the magnetic coil pump according to [1], wherein one valve arranged inside the shuttle is a spherical ball valve.
[3] The present invention is a magnetic coil pump having a cylinder, a magnetic coil, a shuttle, a permanent magnet, and one valve, comprising a cylinder having two or more magnetic coils. The magnetic coil pump according to [1] or [2] is provided.
[4] The present invention is a magnetic coil pump having a cylinder, a magnetic coil, a shuttle, a movable iron core, and a single valve, wherein the magnetic coil attracts the shuttle incorporating the movable iron core. The magnetic coil pump according to [1] or [2], wherein a magnetic coil for pushing out the shuttle incorporating the movable iron core and a magnetic coil for pushing out the shuttle are provided in the cylinder. .
[5] The present invention provides a cooling system including the magnetic coil pump according to any one of [1] to [4], a refrigerant tank, a cooling fan, and a refrigerant flow path.
[6] The present invention provides the cooling system according to [5], wherein two or more of the magnetic coil pumps are used.
[7] The present invention provides the cooling system according to [6], wherein two or more of the magnetic coil pumps are arranged in series.

  The magnetic coil pump of the present invention has a small number of parts, a simple drive circuit, no worn parts and parts, high reliability, and long life. Further, since the pump structure can be simplified, a low-cost pump can be obtained.

  Since the cooling system of the present invention includes a magnetic coil pump that is excellent in the transfer efficiency of refrigerants such as water and has high reliability, the cooling performance and efficiency can be improved as compared with the case of using a conventional pump. . In addition, a backup pump can be prepared when one of the cooling magnetic coil pumps fails. Furthermore, by arranging magnetic coil pumps in series, it is possible to increase the space efficiency by reducing the layout area of the cooling pump while sufficiently fulfilling the backup function at the time of failure. Can be planned.

In the magnetic coil pump of this invention, it is a figure which shows a state when a liquid chamber is filled with a liquid and discharge is started. In the magnetic coil pump of this invention, it is a figure which shows a state when entering into the motion of attraction | suction which is going to fill a liquid chamber with a liquid. In the magnetic coil pump of this invention, it is a figure which shows the shuttle structure which provided the valve which has another shape inside. In the magnetic coil pump which has another structure of this invention, it is a figure which shows a state when a liquid is filled with a liquid chamber and a discharge is started. In the magnetic coil pump which has another structure of this invention, it is a figure which shows a state when entering into the movement of the suction which is going to fill a liquid chamber. It is a figure which shows the cooling system which has arrange | positioned one of the magnetic coil pumps of this invention. It is the schematic which shows the cooling system which has arrange | positioned several of the magnetic coil pumps of this invention in parallel. It is the schematic which shows the cooling system which has arrange | positioned several of the magnetic coil pumps of this invention in series.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

<Example 1>
FIG. 1 is a cross-sectional view and a front view of a magnetic coil pump 1 of the present invention used for circulation, and shows a state when liquid is filled in a liquid chamber 7 and discharge is started. As shown in FIG. 1, a magnetic coil pump 1 according to the present invention includes a cylinder 2, a magnetic coil 3 arranged outside the cylinder 2, a shuttle 4, a permanent magnet 5 built in the shuttle 4, and the shuttle interior. And a ball valve 6 disposed on the surface. Here, the cylinder 2 not only functions as a cylindrical container for the liquid flow path but also is provided as a container for supporting and fixing the magnetic coil 3 to the outside. The inner diameter, thickness, and size of the cylinder 2 can be appropriately determined according to the shape and size of other components. Further, the ball valve 6 needs to be disposed inside the shuttle 4. If a structure in which the ball valve 6 is provided on the liquid chamber 7 side outside the shuttle 4 is adopted, the ball valve 6 is placed on the inner surface of the left surface of the cylinder 2 when the shuttle 4 is moved to the liquid discharge side. This is because the liquid cannot be discharged due to a collision.

  Further, in the present invention, a U-shaped recess 41 is provided at one end in order to obtain a sealing effect when the shuttle 4 shown in FIG. 1 operates toward the discharge side. In this way, liquid can be prevented from entering the gap between the shuttle 4 and the inner wall of the cylinder 2 when the liquid is discharged from the liquid chamber in the cylinder. If the shuttle 2 is moved toward the discharge side without providing the concave portion 41, the liquid freely moves through the gap between the cylinder 2 and the shuttle 4, and the liquid discharge capacity of the pump is reduced. On the other hand, when the shuttle 4 operates in the returning direction, this sealing effect is lost. In conventional magnetic coil pumps, it was necessary to use a wearable rubber packing or seal in order to obtain a sealing effect. However, since the present invention does not require the use of such parts, it is highly reliable and has a long service life. It is possible to obtain a magnetic coil pump having

  FIG. 2 is a cross-sectional view showing a state of the magnetic coil pump according to the present invention when the liquid chamber 7 shown in FIG. A current is applied to the magnetic coil 3 in the direction opposite to that shown in FIG. 1 to change the state shown in FIG. 1 to the state shown in FIG.

  As shown in FIG. 2, the shuttle 4 of the pump operates by changing the magnetic field of the magnetic coil 3 and pushes out fluid in the direction of the arrow. In that case, since the shuttle 4 moves in the returning direction, as described above, the recess 41 provided at one end of the shuttle 1 does not exhibit a sealing function.

  1 and 2, reference numerals 9 and 10 denote pump pipes on the suction side and discharge side, respectively, and a magnetic shield cap indicated by 8 prevents the magnetism from leaking to the outside. The suction side pump pipe 9 and the discharge side pump pipe 10 are each connected to the magnetic coil pump 1 to form a liquid flow path.

  Unlike the conventional pump, the magnetic coil pump of the present invention has a great feature in that it has only one valve for controlling the discharge and suction of the liquid instead of two. This feature is provided by providing a recess 41 at one end of the shuttle 4 to prevent liquid from entering the gap between the shuttle 4 and the inner wall of the cylinder 2 when the liquid is discharged from the liquid chamber in the cylinder 2. can get. In the magnetic coil pump of the present invention, the mechanism that functions sufficiently as a pump even when only one valve is used is considered as follows.

  2, when the shuttle 4 is moved backward (right side in FIG. 2) to fill the liquid chamber 7 shown in FIG. 1, the liquid from the suction side pump pipe opens the ball valve 6 and the shuttle 4 Move forward (left side in FIG. 2). Since the liquid which moves at that time is not provided with a seal or packing between the cylinder 2 and the shuttle 4, the liquid can freely travel between the two. That is, the liquid from the suction side pump pipe can easily enter the liquid chamber 7 in front of the shuttle 4 without receiving any resistance.

  Next, as shown in FIG. 1, when the liquid filled in the liquid chamber 7 is discharged by moving the shuttle 4 forward (left side in FIG. 1), the ball valve 6 is closed and the liquid is moved backward (suction side pump). In addition to preventing backflow to the pipe 9 side), the recess 41 provided at one end of the shuttle 4 prevents liquid from entering the gap between the shuttle 4 and the inner wall of the cylinder 2 from the liquid chamber 7 in the cylinder. can do. Thereby, the back flow of the liquid is almost completely prevented, and a sufficient discharge performance can be obtained. If the recess 41 is not provided at one end of the shuttle 4, the liquid flows backward from the gap between the shuttle 4 and the inner wall of the cylinder 2 to the rear of the shuttle 4 (on the right side of the shuttle 4 in FIG. 1) The drop in performance becomes significant and the pump does not function sufficiently.

  On the other hand, in the conventional magnetic coil pump, a packing or a seal is used between the shuttle and the cylinder in order to obtain a sealing effect when the liquid protrudes. However, in this structure, when a suction movement is attempted to fill the liquid chamber 7 with a liquid, a resistance acts against the suction of the liquid from the suction-side pump pipe by the packing and the seal, which is sufficient. A large amount of liquid cannot be transported smoothly. For this reason, a conventional magnetic coil pump has a structure including two valves.

  The present invention can solve the above-described problems of the conventional magnetic coil pump by providing a recess 41 at one end of the shuttle 4. And when connecting the magnetic coil pump of this invention with each pump piping of a suction side and discharge side and comprising a closed-loop liquid flow path, it turned out that the function which can convey sufficient liquid quantity as a pump can be exhibited. Such studies have not been carried out so far, and by adopting the structure and configuration of the present invention, as shown in FIGS. Degradation is suppressed. As a result, the number of parts can be reduced, and a small and high-performance pump can be obtained.

  In the present invention, instead of the ball valve 6, a flat valve 11 as shown in FIG. 3 are a left side view and a front sectional view of the shuttle 4, respectively. In the left figure of FIG. 3, the flat valve 11 and the pin 12 for supporting it are shown by the dotted line. Further, as shown in FIG. 3, the shuttle 4 is provided with a U-shaped recess 41 around the liquid discharge side, and this recess 41 provides a sealing effect when the liquid protrudes.

  As shown in FIG. 3, the flat valve 11 is supported on the shuttle 4 by pins 12 at an interval that can move a predetermined distance. When the flat valve 11 moves left and right in this direction in the liquid flow direction, the liquid is discharged or sucked.

  Although the flat valve 11 shown in FIG. 3 can sufficiently function as a valve, the shape thereof is slightly more complicated than the ball-like valve shown in FIG. For this reason, the flat valve 11 is not only difficult to manufacture, but also requires skill in alignment and adjustment when attached to the shuttle 4. Therefore, as the valve used in the present invention, the ball-shaped valve shown in FIG. 1 is suitable.

  Further, in the present invention, when two or more magnetic coils are provided and operated in sequence, the stroke of the shuttle 4 can be increased, and the amount of liquid discharged and sucked can be increased by one operation. This movement is the same drive system as the linear motor. By this method, a larger amount of liquid can be transported, and the effect of improving the liquid transport efficiency by the magnetic coil pump can be obtained.

<Example 2>
FIG. 4 is a cross-sectional view and a front view showing a magnetic coil pump 20 having another structure of the present invention, and shows a state when the liquid chamber 26 is filled with liquid and discharge is started. FIG. 5 is a cross-sectional view and a front view showing a state when the magnetic coil pump 20 having the same structure as FIG. 4 enters a suctioning motion to fill the liquid chamber 26 shown in FIG. . 4 and 5, the ball valve 24, the liquid chamber 26, the suction side pump pipe 27, the magnetic seal cap 28, and the discharge side pump pipe 29 have the same configuration as the magnetic pump 1 shown in FIGS. 1 and 2.

  The magnetic coil pump 20 shown in FIG. 4 has a movable iron core 21 in place of the permanent magnet 5 used in the magnetic coil pump shown in FIG. 1 as a shuttle 25, and sets magnetic coils 22 and 23 provided in the cylinder. And has a function of extruding fluid. When extruding the fluid, the magnetic coil 22 pulls in the shuttle 25 containing the movable iron core 21, and then turns off the power of the magnetic coil 22 and causes the current to flow through the magnetic coil 23, so that the state shown in FIG. The fluid is sent by repeating the state shown in FIG. 4 and the state shown in FIG.

  As described above, the magnetic coil pump shown in FIGS. 4 and 5 is a set of a magnetic coil for attracting the shuttle 25 containing the movable iron core 21 and a magnetic coil for pushing out the shuttle 25 containing the movable iron core 21. It is a feature that a cylinder is provided with a magnetic coil. The direction in which the shuttle 25 moves is controlled by switching the current flowing through each of the magnetic coils 22 and 23. With this structure, a magnetic coil pump having the same functions and operations as the first embodiment can be obtained. In this embodiment, the set of magnetic coils 22 and 23 provided in the cylinder is not limited to one set, and may be two or more sets. When two or more sets of magnetic coils are operated in sequence, the stroke of the shuttle 25 can be increased, and the amount of liquid discharged and sucked can be increased by one operation.

  Next, a cooling system using the magnetic coil pump of the present invention will be described.

<Example 3>
FIG. 6 is a diagram showing a cooling system 90 of the present invention in which one of the magnetic coil pumps of the present invention is arranged. As shown in FIG. 6, the cooling system 90 of the present invention includes a refrigerant tank 93, a magnetic coil pump 94, and a cooling fin 95, and is a cooling fin 95 for the purpose of cooling an object 92 that has generated heat. Circulate the cooled refrigerant. The circulation of the refrigerant is performed by a flow path 96 that connects the cooling object 92 and the functional members 93 to 95 described above. By connecting the object to be cooled 92, the refrigerant tank 93, the pump 94, and the cooling fin 95 using the flow path 96, the same function as a conventional pump having two (double) valves in both flow rate and pressure is achieved. Can do. That is, in the present invention, cooling can be performed by the magnetic coil pump of the present invention having only one valve, so that the pump price is inexpensive and reliable, and the pump is small in size and light in weight so that it is economical. Become a pump.

<Example 4>
In the present invention, it is possible to construct a cooling system in which a backup pump is prepared and provided in the event that one normal cooling pump fails. FIG. 7 is a schematic view showing a cooling system of the present invention in which a plurality of cooling magnetic coil pumps 13, 14 and 15 are arranged in parallel. In FIG. 7, magnetic coil pumps 13, 14 and 15 are arranged in parallel and connected to the flow path 16 by piping. The installation method of the magnetic coil pump shown in FIG. 7 is common in the conventional cooling system, but this method requires a lot of space. In order to solve this technical problem, the present invention can provide a cooling system having another configuration.

<Example 5>
FIG. 8 shows a schematic diagram of the cooling system 91 of the present invention in which a plurality of magnetic coil pumps of the present invention are arranged in series. In FIG. 8, by arranging a plurality of magnetic coil pumps 13, 14 and 15 in series, when one pump is normally operating and the pump stops operating due to an electrical trouble or the like, It is possible to ensure safety by using a system in which the pump operates.

  Since the cooling system shown in FIG. 8 requires less installation area, the cooling device can be miniaturized. What can be done in this way is a system that can be constructed for the first time by using a magnetic coil pump with only one valve per pump. For example, if the pump has two valves, it is composed of a pump that closes when one of the valves is opened, so that it provides a backup function when one pump stops working. I can't. Further, when a conventional rotary pump is used as a pump, since the rotor blades obstruct the flow path when the pump is stopped, this pump cannot also exert a backup function. In this way, by using the magnetic coil pump of the present invention having only one valve, the pump is arranged in series and the pump backup system of the cooling system can be assembled, so that the space efficiency is improved and the conventional pump is used. Has no excellent features.

  7 and 8 show an example in which three magnetic coil pumps are used as the cooling system, but the number of magnetic coil pumps to be used is not limited to three. When a plurality of magnetic coil pumps are arranged in parallel or in series in the cooling system of the present invention, the number may be two or four or more.

  As described above, the magnetic coil pump of the present invention has a small number of parts, a simple drive circuit, no worn parts and parts, high reliability, and long life. Further, since the pump structure can be simplified, a low-cost pump can be obtained.

  The cooling system of the present invention can improve the cooling performance and efficiency compared with the conventional pump, and prepares a backup pump when one of the cooling magnetic coil pumps fails. be able to. Furthermore, by arranging magnetic coil pumps in series, it is possible to increase the space efficiency by reducing the layout area of the cooling pump while sufficiently fulfilling the backup function at the time of failure, and reducing the size of the cooling device system itself. Can be planned. The cooling system of the present invention can be applied not only to the field of electronic and electrical equipment such as electronic computers and personal computers, but also to cooling equipment for transportation equipment such as automobiles and trains and industrial equipment such as machine tools. , Its usefulness is extremely high.

DESCRIPTION OF SYMBOLS 1 ... Magnetic coil pump 2 ... Cylinder 3 ... Magnetic coil 4 ... Shuttle 5 ... Permanent magnet 6 ... Ball valve 7 ... Liquid chamber 8 ... Magnetic shield cap 9 ..Suction side pump pipe 10 ... Discharge side pump pipe 11 ... Plate-shaped valve 12 ... Pins 13, 14, 15 ... Magnetic coil pump 16 ... Flow path 20 ... Magnetic coil Pump 21 ... Movable iron core 22,23 ... Magnetic coil pump 24 ... Ball valve 25 ... Shuttle 26 ... Liquid chamber 27 ... Suction side pump 28 ... Magnetic shield cap 29 ... -Discharge side pump 41 ... Recess 90 ... Cooling system 92 ... Cooling object 93 ... Refrigerant tank 94 ... Magnetic coil pump 95 ... Cooling fin 96 ... Flow path

Claims (7)

  A magnetic coil pump having a cylinder, a magnetic coil, a shuttle, a permanent magnet or a movable iron core, and a single valve, wherein the shuttle is discharged at one end from a liquid chamber in the cylinder. A recess is provided to prevent liquid from entering the gap between the shuttle and the inner wall of the cylinder, and the one valve is arranged inside the cylinder, and the one arranged outside the cylinder. A magnetic coil pump characterized in that electricity is passed through a magnetic coil to magnetize it, and the shuttle is moved by moving a permanent magnet or a movable iron core built in the shuttle to operate as a pump.   The magnetic coil pump according to claim 1, wherein the one valve disposed inside the shuttle is a spherical ball valve.   The magnetic coil pump having a cylinder, a magnetic coil, a shuttle, a permanent magnet, and a single valve, comprising a cylinder having two or more of the magnetic coils. Magnetic coil pump.   A magnetic coil pump having a cylinder, a magnetic coil, a shuttle, a movable iron core, and a single valve, wherein the magnetic coil draws the shuttle incorporating the movable iron core and the movable iron core. The magnetic coil pump according to claim 1, wherein the cylinder is provided in a set with a magnetic coil for extruding the shuttle that incorporates the shuttle.   A cooling system comprising the magnetic coil pump according to claim 1, a refrigerant tank, a cooling fan, and a refrigerant flow path. The cooling system according to claim 5, wherein two or more of the magnetic coil pumps are used.   The cooling system according to claim 6, wherein two or more of the magnetic coil pumps are arranged in series.

Images