JP2016113177A - Electromagnetic valve of beverage supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electromagnetic valve of a beverage supply device, which can perform sterilization reliably in a short time.SOLUTION: An electromagnetic valve of a beverage supply device comprises a plunger moving linearly by electromagnetic force of an electromagnetic coil, and a valve body which is provided at a distal end part of the plunger and closes a valve port by being pressed against a valve seat. The distal end part of the plunger of the electromagnetic valve, which is fixed in the beverage supply device, is positioned below a base end part on the opposite side, and the base end part is inclined with respect to a vertical axis line in a direction away from an inflow port of the electromagnetic valve.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electromagnetic valve that opens and closes a flow path of a beverage supply device such as a water server.

  In addition to manual cock-type faucets for water servers that supply drinking water, electromagnetic valves that operate by users operating switches are increasingly used. . As a solenoid valve for a water server that handles beverages, a direct-acting type that is simpler in sterilization or cleaning is mainly used because the configuration of the flow path is simple compared to the pilot type. Of the direct acting types, a diaphragm type that isolates the beverage flowing through the solenoid valve and the operating portion of the plunger is mainly used.

  The water server may be required to periodically sterilize the piping system including the valve. In this case, sterilization passes high-temperature water through the piping system as described in Patent Document 1. Is done. However, the sterilization process is often carried out with the stop cock closed, in which case the hot water circulates through the piping system in the water server but does not pass through the stop cock. The plug portion, usually the outflow line side, is sterilized at a high temperature by transferring the heat of the high-temperature water that flows to the vicinity through a metal pipe. However, at that time, if drinking water remains in a portion where high-temperature water in the water stop cock is not passed, there arises a problem that the time required to reach the sterilization temperature is considerably increased.

  FIG. 6 is a schematic longitudinal sectional view of a solenoid valve 200 conventionally used as a water stop cock of the water server. The solenoid valve 200 includes an inflow conduit 211, an outflow conduit 212, and the inflow conduit 211. A valve port 213 provided at one end of the motor, an electromagnetic coil 216, a plunger 217, a valve body 219, a diaphragm 221 and the like. In the electromagnetic valve 200, when the valve port 213 is closed after the water server is used, the region B on the inflow conduit 211 side is filled with water, and the water remains in the region C on the outflow conduit 212 side. Water that fills area B does not cause sanitary problems, but water that remains in area C may cause sanitary problems or otherwise sterilize if sterilizing hot water does not pass through area C. It became a factor that prolongs the time required for. This is because the residual water in the region C comes into contact with the outside air at one end, and there is a possibility of attachment and growth of airborne bacteria.

JP 2006-021793 A

  This invention is made | formed in view of the above-mentioned situation, Comprising: It aims at providing the electromagnetic valve of the drink supply apparatus which can perform sterilization reliably in a short time.

  In order to solve the above-mentioned problems, the present invention is an electromagnetic valve of a beverage supply device, which is a plunger that moves linearly by electromagnetic force of an electromagnetic coil, and a valve body that is provided at the tip of the plunger, A valve body that closes the valve opening by being pressed against the seat, and the plunger of the solenoid valve fixed in the beverage supply device has a tip portion lower than a base end portion on the opposite side. The beverage supplying device is provided with an electromagnetic valve, wherein the proximal end portion is inclined with respect to a vertical axis in a direction away from the inlet of the electromagnetic valve.

  By tilting the solenoid valve in this way, it is possible to realize a configuration in which the liquid beverage does not remain in the outflow pipe, so that it is possible to realize a sanitary solenoid valve in which microorganisms are difficult to propagate and sterilization is easy. Become. In addition, even if an air pool is unlikely to occur or an air pool is generated, the location is limited to the distribution path of the beverage liquid or an area very close to the distribution path. Therefore, it is possible to realize a solenoid valve that can carry away the accumulated air. Thereby, the solenoid valve which can sterilize in a short time without the trouble on the heat transfer with respect to the site | part which should be sterilized can be provided.

  In this invention, the said plunger may have an enlarged diameter part which works so that the moving speed of the said plunger may be reduced by fitting to the said cylinder part. Since the enlarged diameter portion of the plunger and the air inside the cylinder portion act as an air damper to reduce the moving speed of the plunger, it is possible to prevent liquid splashing to the user especially when the valve is closed.

  In the present invention, the solenoid valve is a viscous fluid sealed in a gap between the cylinder part and the plunger, and works so as to reduce the moving speed of the plunger in cooperation with the enlarged diameter part. A viscous fluid may further be provided. Again, this makes it possible to prevent liquid splashing for the user, especially when the valve is closed.

  In the present invention, the valve body may have a conical protrusion at the tip thereof.

  In the present invention, the electromagnetic valve may be a diaphragm type valve having a diaphragm for isolating the liquid flowing therethrough from the plunger.

  The present invention further relates to an electromagnetic valve of a beverage supply device, which is a plunger that moves linearly by electromagnetic force of an electromagnetic coil, and a valve body that is provided at the distal end of the plunger and is pressed against the valve seat. A valve body that closes the mouth, and a diaphragm that isolates the liquid flowing through the solenoid valve from the plunger, and the plunger of the solenoid valve fixed in the beverage supply device has the tip portion Is positioned below the base end on the opposite side so that the portion of the diaphragm closer to the inlet of the solenoid valve with respect to the central axis of the plunger is located higher than the portion of the diaphragm on the far side And providing an electromagnetic valve for a beverage supply device, wherein the diaphragm is inclined with respect to a horizontal line.

  The present invention also provides a beverage supply device including any of the electromagnetic valves of the beverage supply device described above, and in the beverage supply device, the electromagnetic valve is provided at a bent portion of the flow path.

  In the present invention, the solenoid valve may be used for controlling water injection to the outside.

It is a typical longitudinal cross-sectional view of the solenoid valve of the drink supply apparatus by the 1st Embodiment of this invention. It is a typical longitudinal cross-sectional view of the solenoid valve of the drink supply apparatus by the 2nd Embodiment of this invention. It is a typical longitudinal cross-sectional view of the solenoid valve of the drink supply apparatus by the 3rd Embodiment of this invention. It is a typical longitudinal cross-sectional view of the solenoid valve of the drink supply apparatus by the 4th Embodiment of this invention. It is a typical longitudinal section of a solenoid valve of a drink supply device by related technology of the present invention. It is a typical longitudinal cross-sectional view of the solenoid valve of the conventional beverage supply apparatus.

  Before describing the electromagnetic valve of the beverage supply device according to the embodiment of the present invention, the electromagnetic valve of the beverage device according to the related art of the present invention will be described with reference to FIG. 5 which is a schematic longitudinal sectional view thereof.

  The solenoid valve 100 shown in FIG. 5 is devised to prevent the generation of residual water on the outflow pipe side in the conventional solenoid valve 200 as shown in FIG. It has a passage 112, a valve port 113 provided at one end of the outflow conduit 112, an electromagnetic coil 116, a plunger 117, a valve body 119, a diaphragm 121, and the like. According to the electromagnetic valve 100, the valve port 113 is provided at one end of the outflow pipe 112 and the outflow pipe extends downward, so that no residual water is generated on the outflow pipe side. However, in this electromagnetic valve 100, when a water server was used, it was confirmed that an air pool in which air accumulated was generated in the region indicated by A in FIG. 5 in the flow path above the valve body 119. The air reservoir was also desired to be removed as it would be a barrier to the propagation of microorganisms and heat transfer to the site to be sterilized.

  Next, the electromagnetic valve 1 of the beverage supply device according to the first embodiment of the present invention will be described below with reference to FIG. 1 which is a schematic longitudinal sectional view thereof. This solenoid valve 1 can suppress residual water and air accumulation by attaching to a location where the direction of the water flow path changes (bent portion of the flow path), and is particularly effective for water injection for beverage supply devices and the like. It is.

  First, the “beverage supply apparatus” in the present specification will be described. This apparatus dispenses water stored in an internal tank or the like or tea or other beverage liquid according to the operation of a water injection button or the like by the user. It is a device to supply. Moreover, this apparatus is installed and used on a desk or a floor. As an example of such a device, there is a water server as described in Patent Document 1, and in this specification, the invention will be described by taking a water server as an example of a beverage supply device.

  Moreover, since this invention has a technical feature regarding the solenoid valve of a drink supply apparatus, detailed description and illustration about a drink supply apparatus or a water server are abbreviate | omitted in this specification.

  In the first embodiment, the electromagnetic valve 1 serves as a water stop cock of the water server, and is attached to the end portion of the water discharge pipe 30 of the water server. The solenoid valve 1 is a direct acting type, and has, as main components, an inflow conduit 11 having an inflow port 11a at an end portion and extending substantially horizontally, a valve port 13 at an upper end portion, and an outflow port at a lower end portion. An outflow pipe 12 having 12 a and extending substantially vertically downward; a valve seat 14 surrounding the valve port 13; a valve housing 15; an electromagnetic coil 16; and a plunger 17 that moves linearly by the electromagnetic force of the electromagnetic coil 16; The cylinder portion 18 of the valve housing 15 that guides the movement of the plunger 17, the valve body 19 that is fixed or integrally formed with the distal end portion of the plunger 17, and the end surface on the proximal end side of the plunger 17 are pressed. The compression coil spring 20 accommodated in the cylinder portion 18 and the rubber member in this embodiment extend between the valve body 19 and the valve housing 15 so that the flowing liquid is isolated from the plunger 17. ; And a Yafuramu 21. Moreover, the front-end | tip part of the plunger 17 is located below rather than the base end part on the opposite side.

  Since the electromagnetic valve 1 is configured as described above, when the electromagnetic coil 16 is not energized, the valve element 19 is pressed against the valve seat 14 by the force generated by the spring 20, and the valve port 13 is closed. . On the other hand, when the electromagnetic coil 16 is energized by the user operating a water injection button (not shown) of the water server, the generated electromagnetic force overcomes the force of the spring 20 and the plunger 17 and thus the valve element 19 is valved. Lifting from the seat 14 opens the valve port 13 and discharges drinking water.

  In addition, as shown in FIG. 1, in the solenoid valve 1, each component other than the inflow conduit 11 and the outflow conduit 12 is oriented obliquely with respect to the vertical axis Ag indicating the direction of gravity or the horizontal axis. ing. In this embodiment, the plunger 17 has its longitudinal axis Ap tilted from the vertical axis Ag by approximately 25 ° counterclockwise in FIG. 1, that is, by approximately 25 ° in the direction in which the base end of the plunger 17 is away from the inflow port 11a. Similarly, the contact surface of the valve body 19 with the valve seat 14 is inclined about 25 ° counterclockwise in FIG. 1 from the horizontal axis.

  In the water discharge line 30 of the water server in FIG. 1, the end connected to the electromagnetic valve 1 extends horizontally. Therefore, in the electromagnetic valve 1 whose inflow pipe 11 is connected to the water discharge pipe 30, the contact surface of the plunger 17 and the valve body 19 is the same as that described above with respect to the vertical axis Ag or the horizontal axis in FIG. It is fixed to the water server in a state where it is tilted approximately 25 ° counterclockwise.

  The solenoid valve 1 in FIG. 1 is connected to the water discharge conduit 30 by screwing a female screw portion formed at the tip of the inflow conduit 11 and a male screw portion at the end of the water discharge conduit 30. Is fixed. It will be apparent that various other known pipe joints or flange joints may be used to secure the connection instead.

  In the first embodiment, since the electromagnetic valve 1 is tilted and fixed as shown in FIG. 1, the region on the left side of the valve body 19 is lower than the region on the right side. As a result, there is no air accumulation in the region at least on the left side of the valve body 19 of the water remaining around the valve body 19 when the valve port 13 is closed. On the other hand, an air pool may occur in the right region of the valve body 19. However, even if the air pool is generated in the solenoid valve 1 of FIG. 1, the generation location is very close to the water flow path or the water flow path. And will not expand. Of course, no water remains in the outflow pipe 12.

  In the first embodiment, the inclination angle θ from the vertical axis Ag of the plunger 17 of the solenoid valve 1 fixed to the water discharge pipe 30 is set to about 25 °. However, in the present invention, the inclination angle θ is 10 ° to 40 ° is a preferable range, and therefore, an inclination angle θ other than 25 ° is of course possible. In the present invention, the inclination angle θ is the shape and size of components such as the valve seat 14, the valve body 19, the inflow conduit 11, the outflow conduit 12, and the diaphragm 21 of the solenoid valve 1, and the positional relationship between them. It will be appreciated that the optimum value may vary depending on

  Next, the electromagnetic valve 2 of the beverage supply device according to the second embodiment will be described with reference to FIG. The electromagnetic valve 2 of this embodiment is the same as that of the first embodiment in that the plunger 17 has an enlarged diameter portion 22 and the valve body 19 has a conical protrusion 23 on the side in contact with the valve seat 14. Different from valve 1. However, since other parts are the same as those of the electromagnetic valve 1 of the first embodiment, only different parts will be described.

  The plunger 17 of the electromagnetic valve 2 shown in FIG. 2 is guided by the cylinder portion 18 of the valve housing 15 in the same manner as in the first embodiment, but in the middle between the distal end portion and the proximal end portion. An enlarged diameter portion 22 having an enlarged diameter is formed. The enlarged diameter portion 22 has an outer diameter slightly smaller than the inner diameter of the cylinder portion 18 so as to reduce the moving speed of the plunger 17, that is, to perform an air damper function in cooperation with air in the cylinder portion. It has been. When the movement speed of the plunger 17 decreases, particularly when the valve is closed, that is, when the plunger 17 is moved by being pushed by the spring 20 and the valve body 19 closes the valve seat 14, the water pushed out from the outflow pipe 12. As a result, the liquid splash to the user can be prevented.

  Moreover, the conical protrusion part 23 formed in the valve body 19 enters the valve port 13 from the tip thereof when the valve is closed. By providing the conical protrusion 23, the direction of water extrusion when the valve is closed is changed, and the amount of water to be pushed out is reduced. As a result, it is possible to prevent liquid splashing.

  Next, the electromagnetic valve 3 of the beverage supply device according to the third embodiment will be described with reference to FIG. The electromagnetic valve 3 of this embodiment is different from the electromagnetic valve 1 of the first embodiment in that a viscous fluid such as oil is sealed in the cylinder portion 18 to provide an oil damper function. However, since other parts are the same as those of the electromagnetic valve 1 of the first embodiment, only different parts will be described.

  In the solenoid valve 3 of the third embodiment, an O-ring 24 is disposed near the outlet of the cylinder part 18 in order to enclose a viscous fluid such as oil in the cylinder part 18. Moreover, the plunger 17 has the enlarged diameter part 22 similarly to the case of 2nd Embodiment. However, the diameter-expanded portion 22 of the plunger 17 of the third embodiment is made with dimensions such that the clearance between the cylinder portion 18 and the cylinder portion 18 is larger than that of the second embodiment in consideration of the viscosity of the oil. It has been.

  In the solenoid valve 3 of the third embodiment, when the valve is closed, the oil present in the cylinder chamber below the enlarged diameter portion 22 of the plunger 17 moves the gap while the plunger 17 moves downward in FIG. The moving speed of the plunger 17 is decelerated by the viscous resistance when moving through and passing into the cylinder chamber above the enlarged diameter portion 22. As a result, as in the case of the second embodiment, the speed of the water pushed out from the outflow pipe 12 is reduced, so that it is possible to prevent the liquid from splashing to the user.

  Next, the electromagnetic valve 4 of the beverage supply device according to the fourth embodiment will be described with reference to FIG. This electromagnetic valve 4 is different from that of the above-described embodiment, and is of a type that does not have a diaphragm. However, the other points are basically the same as those of the electromagnetic valve 1 of the first embodiment.

  Also in the fourth embodiment, the solenoid valve 4 has a longitudinal axis Ap of the plunger 17 tilted by about 25 ° counterclockwise in FIG. 4 from the vertical axis Ag indicating the direction of gravity, and enters the water discharge line 30 of the water server. Since the connection is fixed, the region on the left side of the valve body 19 is lower than the region on the right side. As a result, no air pool is generated in the region on the left side of FIG. 4 of the valve body 19 of the water staying around the valve body 19 when the valve is closed. On the other hand, an air pool may occur in the right region of the valve body 19. However, even if the air pool is generated by the solenoid valve shown in FIG. 4, since the generation location is close to the water flow path, it is carried away by the water every time the water flows, and it accumulates and expands. There is nothing.

  Although not shown, an embodiment in which the occurrence of air accumulation in the region on the right side of the valve body 19 is suppressed by increasing the diameter of the inflow conduit 11 of the electromagnetic valve 4 of the fourth embodiment upward is also possible.

  Although not shown in the figure, in order to suppress the occurrence of air accumulation in the region on the right side of the valve element 19 of the solenoid valve 4 of the fourth embodiment, the thickness of the valve housing 15 is set inward so as to fill the gap in that region. Increased embodiments are also possible.

  Further, with respect to the electromagnetic valve 4 of the fourth embodiment, the features of the enlarged diameter portion 22 of the plunger 17 and the conical protrusion 23 of the valve body 19 described in the second embodiment, and the third An embodiment in which the feature of the oil damper function described in the embodiment is added alone or in some cases in combination is also possible.

DESCRIPTION OF SYMBOLS 1 Solenoid valve 11 Inflow line 12 Outflow line 13 Valve port 14 Valve seat 16 Electromagnetic coil 17 Plunger 18 Cylinder part 19 Valve body 20 Compression coil spring 21 Diaphragm 30 Water discharge line

Claims (8)

A solenoid valve of a beverage supply device,
A plunger that moves linearly by the electromagnetic force of the electromagnetic coil;
A valve body provided at a distal end portion of the plunger, the valve body closing the valve port by being pressed against the valve seat,
The plunger of the electromagnetic valve fixed in the beverage supply device is such that the distal end portion is positioned below the opposite proximal end portion, and the proximal end portion is separated from the inlet of the electromagnetic valve. An electromagnetic valve of the beverage supply device, which is inclined with respect to the vertical axis. A cylinder portion for guiding the movement of the plunger;
The electromagnetic valve of the beverage supply device according to claim 1, wherein the plunger has an enlarged diameter portion that works so as to reduce a moving speed of the plunger by being fitted to the cylinder portion.   The viscous fluid enclosed in a gap between the cylinder part and the plunger, further comprising a viscous fluid that works to reduce the moving speed of the plunger in cooperation with the enlarged diameter part. The electromagnetic valve of the beverage supply apparatus according to 2.   The electromagnetic valve of the beverage supply device according to any one of claims 1 to 3, wherein the valve body has a conical protrusion at a tip thereof.   The electromagnetic valve of the beverage supply device according to any one of claims 1 to 4, wherein the electromagnetic valve is a diaphragm type valve having a diaphragm for isolating liquid flowing through the electromagnetic valve from the plunger. A solenoid valve of a beverage supply device,
A plunger that moves linearly by the electromagnetic force of the electromagnetic coil;
A valve body provided at a tip of the plunger, the valve body closing the valve port by being pressed against the valve seat;
A diaphragm for isolating the liquid flowing through the solenoid valve from the plunger;
The plunger of the solenoid valve fixed in the beverage supply device has the tip portion positioned below the base end portion on the opposite side,
The beverage supply device according to claim 1, wherein the diaphragm is inclined with respect to a horizontal line such that a portion of the diaphragm closer to the inlet of the solenoid valve is positioned above a portion of the diaphragm on the far side with respect to the central axis of the plunger. solenoid valve. A beverage supply device comprising the electromagnetic valve of the beverage supply device according to any one of claims 1 to 6,
A beverage supply device, wherein the electromagnetic valve is provided at a bent portion of a flow path.   The beverage supply device according to claim 7, wherein the electromagnetic valve is used to control water injection to the outside.

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