TW201823618A - Solenoid valve and beverage supplying apparatus - Google Patents

Abstract

A solenoid valve 10 of this invention includes: a valve casing 11; an inlet port 11a for inpouring a beverage into the valve casing 11; an outlet port 11b for outpouring the beverage out from the valve casing 11; a movable iron-core portion 13 accommodated in the valve casing 11 between the inlet port 11a and the outlet port 11b; a seal portion 19 disposed at one end side of the movable iron-core portion 13 for closing the outlet port 11b; a spring 17 disposed at the other end side of the movable iron-core portion 13 for biasing the seal portion 19 so as to close the outlet port 11b. The solenoid valve 10 includes one or a plurality groove portion (inter-passage port) 13a formed on the movable iron-core portion 13, and a cycling port 11d, wherein a sterilizing medium is circulated between the inlet port 11a and the cycling port 11c through the one or the plurality groove portion 13a with the outlet port 11b being closed by the seal portion19.

Description

 Solenoid valve and beverage supply device  

The present invention relates to a solenoid valve that can sterilize a sealing portion in a closed state, and a beverage supply device including a water dispenser having the electromagnetic valve.

In the past, there has been proposed a water dispenser for a beverage supply device which has a water tank for storing drinking water in a piping system, and as means for sterilizing the piping system, further comprising: heating means for arranging the water tank The drinking water is heated to a sterilizable temperature; the pump supplies the high temperature water in the water tank to the piping system; and the circulation line is used to transfer the high temperature water to the piping system by the pump Return to the aforementioned sink again.

In such a water dispenser, the piping system is maintained in a state in which the microorganisms are not propagated by periodically performing sterilization treatment, and the sterilization treatment is performed by supplying the high-temperature water to the piping system through the pump and the natural circulation (convection).

An example of the above water dispenser will be described using Fig. 7. The water dispenser 100 includes a drinking water container 102, a cold water tank 103 for receiving drinking water dropped from the drinking water container 102, a warm water tank 105 for receiving drinking water from the cold water tank 103, and a cold water injection unit 107 for cooling. The cold water in the water tank 103 is injected into a beverage container or the like, and the warm water injection unit 120 injects warm water in the warm water tank 105 into a beverage container or the like. Further, a heater (not shown) is provided in the warm water tank 105, and a cooler (not shown) is provided in the cold water tank 103. The solenoid valve 110 shown in Fig. 8 below is provided in the cold water injection unit 107 of the water dispenser 100.

As shown in Fig. 8, the solenoid valve 110 is provided with a main body portion 111 having an inlet port 111a for supplying drinking water, a valve box 111d connected to the inlet port 111a, and an outlet connected to the valve box 111d. 111b.

The solenoid valve 110 includes a diaphragm (valve body) 119 which is disposed in the valve casing 111d and switches a pipe between the inlet port 111a and the outlet port 111b; the movable core portion 113 is connected to the diaphragm 119; the coil portion 115 The movable core portion 113 is moved by magnetic force; the spring 117 applies the movable core portion 113 and the diaphragm 119 to the valve seat 111e with potential energy; and the injection port portion 118 is connected to the outlet port 111b.

When the solenoid valve 110 shown in Fig. 8 is closed, the sealing surface 119a of the diaphragm 119 is seated on the valve seat 111e, and the flow before and after the valve seat 111e is blocked. In this state, the hot water for sterilization flows from the circulation port 111c of the solenoid valve 110 to the inlet port 111a. However, in the configuration of the solenoid valve 110, since the hot water does not flow into the vicinity of the sealing surface 119a of the diaphragm 119 during the circulating water cleaning, it takes time to rise to the temperature required for sterilization of the solenoid valve. Further, a space is formed below the peripheral portion 119b of the diaphragm 119 which is not in direct contact with the hot water, and it takes time to rise to the temperature required for sterilization of the space.

 [Previous Technical Literature]    [Non-patent literature]  

[Patent Document 1] International Publication No. 2012/165775

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2013-180803

As shown in Fig. 8, the flow path during the hot water washing does not pass through the main portion of the solenoid valve (the sealing surface 119a of the diaphragm 119 and the outer peripheral portion 119b), so that the sterilization of the solenoid valve takes time, so that the energy efficiency is deteriorated. Further, there is a space in the outer peripheral portion of the diaphragm in which the hot water is not in direct contact, and in particular, the energy efficiency for sterilization in this space is poor.

An object of the present invention is to provide a solenoid valve and a beverage supply device which are sufficiently sterilizable inside a solenoid valve and which have excellent sterilization efficiency.

In order to solve the above problems, the configuration of the present invention is as follows.

(First Aspect) A solenoid valve comprising: a valve box; an inlet port for allowing a beverage to flow into the valve box; and an outlet port for discharging a beverage from the valve box; the movable portion being attached to the inlet port and The outlet port is housed in the valve box; the sealing portion is provided on one end side of the movable portion to close the outlet port; and the potential energy member is provided on the other end side of the movable portion Potential energy is applied to the sealing portion to close the outlet port; the solenoid valve is provided; the inter-turn flow path is for flowing the beverage between the inlet port and the outlet port; and the circulation port is at the outlet The crotch side is connected to the inter-turn flow path; and the sterilizing medium is circulated through the inter-turn flow path between the inlet port and the circulation port in a state where the sealing portion closes the outlet port. (Second aspect) In the solenoid valve according to the first aspect, the inter-turn flow path is one or a plurality of grooves formed on an inner surface of the valve casing or an outer surface of the movable portion, or A space is formed between the inner surface of the valve casing and the outer surface of the movable portion. (Section 3) In the solenoid valve according to the first aspect or the second aspect, the circulation enthalpy is provided on a side wall of the valve casing adjacent to the outlet port. (Aspect 4) The solenoid valve according to any one of the first aspect to the third aspect, wherein the circulation enthalpy is disposed so as to form a predetermined angle with respect to a longitudinal direction of the electromagnetic valve.

In the solenoid valve according to any one of the first aspect to the fourth aspect, the valve housing includes a movable portion accommodating portion that fixes the movable portion The movable portion accommodating portion has a diameter larger than a diameter of the inlet port and/or the outlet port. The electromagnetic valve according to any one of the first aspect to the fifth aspect, wherein the movable portion is a movable core portion, and the electromagnetic valve is provided to move the movable core portion by a magnetic force The coil part that moves. In the electromagnetic valve according to any one of the first aspect to the sixth aspect, the potential energy member is a spring, and the electromagnetic valve includes an accommodating portion that accommodates the spring. (Aspect 8) The electromagnetic valve according to the seventh aspect, wherein the accommodating portion is a concave accommodating portion provided on the other end side of the movable portion, and the spring is housed in the inlet 埠 and the concave shape Between the containment departments. (9) The solenoid valve according to the eighth aspect, wherein the recessed accommodating portion is provided with one or a plurality of slits, and the inter-turn flow path and the inlet port are connected to each other through the slit. . According to a tenth aspect of the invention, in the solenoid valve of the seventh aspect, the solenoid valve includes an extension pipe portion extending from the inlet port into the valve casing, and the accommodation portion is formed in the extension pipe portion and the valve An annular housing between the boxes. (Eleventh Aspect) The electromagnetic valve according to the tenth aspect, wherein one or a plurality of slits are provided in the extension pipe portion, and the inter-turn flow path and the inlet port are connected to each other through the slit .

(12th aspect) In the electromagnetic valve according to the tenth aspect or the eleventh aspect, the extension pipe portion is provided with an opening at a distal end thereof, and the inter-turn flow path and the inlet port are transmitted through the opening Connected. The electromagnetic valve according to any one of the first aspect to the twelfth aspect, wherein the circulation raft is provided in a lower portion of the valve casing. The electromagnetic valve according to any one of the first aspect to the thirteenth aspect, wherein the sterilizing medium is hot water. (Fifteenth aspect) A beverage supply device comprising the electromagnetic valve according to any one of the first aspect to the fourteenth aspect. (Sixteenth aspect) In the beverage supply device according to the fifteenth aspect, the heating means is provided in a line connected to the circulation port or the inlet port. (17th aspect) The beverage supply device according to the sixteenth aspect, wherein the sterilization medium generated by the heating of the heating member is transmitted through the circulation or the aforesaid state in a state where the sealing portion closes the outlet port The inlet port is supplied into the aforementioned solenoid valve. (Eighth aspect) The beverage supply device according to the sixteenth aspect or the seventeenth aspect, wherein the sterilization medium is supplied through the circulation port or the inlet port by convection generated by heating by the heating member Go to the aforementioned solenoid valve. (19th aspect) The beverage supply device according to any one of the 15th aspect to the 18th aspect, further comprising a circulation line for causing the sterilization medium to circulate in the electromagnetic valve. (20th aspect) A water dispenser comprising the beverage supply device according to any one of the 15th aspect to the 19th aspect. (21st aspect) The water dispenser of the 20th aspect is equipped with the said electromagnetic valve in the cold water supply part side.

The present invention can reliably sterilize the inside of the solenoid valve in the closed state of the solenoid valve. Further, according to the present invention, the periphery of the seal portion, the groove portion, and the potential energy-providing member can be reliably sterilized even in the closed state of the electromagnetic valve.

10, 20‧‧‧ solenoid valve

11, 21‧‧‧ valve box

11a, 21a‧‧‧ Entrance埠

11b, 21b‧‧‧ Export 埠

11c, 21c‧‧‧ cycle

11d, 21d‧‧‧ Large diameter pipe department (movable part storage department)

13‧‧‧ movable iron core (movable part)

13a‧‧‧Ditch Department (Daytime Flow Path)

13b‧‧‧Receiving Department

13c, 21a3‧‧‧ slit

15, 25‧‧‧ coil department

17, 27 ‧ ‧ springs (giving potential energy components)

19, 29‧‧‧ Sealing part (valve body)

21a1‧‧‧Extension of the Department

21a2‧‧‧ openings

23‧‧‧ movable iron core

29a‧‧‧Flange

30, 40, 50, 60‧‧‧ circulation lines

31, 41, 51, 61‧‧‧ heater (heating member)

Fig. 1 is a cross-sectional view showing a closed state of a solenoid valve according to a first embodiment of the present invention.

Fig. 2 is a cross-sectional view showing the open state of the solenoid valve of Fig. 1.

Fig. 3 is a cross-sectional view showing the closed state of the solenoid valve according to the second embodiment of the present invention.

Fig. 4 is a cross-sectional view showing the open state of the solenoid valve of Fig. 3.

Fig. 5 is a view showing the configuration of a first circulation line having the solenoid valve of the first embodiment.

Fig. 6 is a view showing the configuration of a second circulation line having the solenoid valve of the first embodiment.

Figure 7 is a schematic view showing the water supply structure of a conventional water dispenser.

Figure 8 is a cross-sectional view of a solenoid valve used in a conventional water dispenser.

Hereinafter, each of the embodiments in which the electromagnetic valve and the beverage supply device of the present invention are applied to a solenoid valve and a water dispenser for a water dispenser will be described. Further, the water supply structure of the water dispenser according to each embodiment of the present invention is the same as that of the water dispenser of Fig. 7, but includes a solenoid valve of each embodiment to be described later, instead of the electromagnetic valve of the water dispenser of Fig. 7. The solenoid valve and the water dispenser of each of the embodiments of the present invention can sterilize the periphery of the sealing portion of the electromagnetic valve when the flow path is sterilized.

 (First embodiment)  

The electromagnetic valve for a water dispenser according to the first embodiment of the present invention will be described with reference to Figs. 1 and 2 . The solenoid valve 10 is provided with a valve box (body portion) 11 that accommodates a valve body such as a sealing portion 19 to be described later, and constitutes a flow path through which the sealing portion 19 is opened and closed, and the valve box 11 is provided separately. : an inlet for drinking water 埠 11a; an outlet for drinking water 埠 11b; a circulation for sterilizing media (hot water, warm water or bactericide) 埠 11c; and a large diameter pipe connected to each 埠11d. In the valve casing 11, the inlet port 11a, the large diameter pipe portion 11d, and the outlet port 11b are arranged linearly, and the circulation port 11c is attached to the outlet port 11b side so as to form a predetermined angle with respect to the longitudinal direction of the solenoid valve 10. It is connected to the large diameter pipe part (movable part accommodating part) 11d. The predetermined angle is preferably in the range from 45 degrees to 135 degrees, more preferably in the range from 80 degrees to 100 degrees, and particularly preferably in a substantially right angle. The inner diameter of the large diameter pipe portion 11d is formed to be larger than the inner diameter of each of the turns. As shown in Fig. 1 and Fig. 2, the circulation port 11c is provided on the side wall of the valve box 11 adjacent to the outlet port 11b. Further, the hot water is preferably set to be heated to a temperature ranging from 60 to 100 ° C, and more preferably to be heated to a temperature ranging from 80 to 100 ° C.

Further, the solenoid valve 10 includes a movable core portion (movable portion) 13 that can advance and retreat along the longitudinal direction of the large-diameter pipe portion 11d while the large-diameter pipe portion is attached to the large-diameter pipe portion. 11d is disposed at one end (left end) of the movable core portion 13, and the outlet port 11b can be closed; the return spring (giving the potential energy member) 17 applies the potential energy to the outlet port 11b; and the coil portion 15, The outer diameter of the large diameter pipe portion 11d is provided to move the movable portion 13 by the magnetic force. Further, the spring 17 is disposed between the other end (right end) of the movable portion 13 and the inlet port 11a.

The sealing portion 19 is formed in a disk shape by a flexible member such as rubber. The diameter of the seal portion 19 is smaller than the diameter of the movable core portion 13 and larger than the diameter of the opening of the outlet weir 11b. The movable core portion 13 has an elongated columnar shape, and one or a plurality of groove portions 13a through which water can flow are formed along the longitudinal direction on the outer peripheral curved surface. The inter-turn flow path between the inlet port 11a and the outlet port 11b is formed through the groove portion 13a. Further, the groove portion may be formed not on the outer surface of the movable core portion 13, but on the inner surface of the large diameter pipe portion 11d, and may be formed one or more along the longitudinal direction thereof. Further, the space between the inner surface of the valve casing 11 and the outer surface of the movable core portion 13 from the inlet port to the outlet port may be formed without forming the groove portion, thereby forming the inter-turn flow path. At the other end (the right end of the first drawing) of the movable core portion 13, a concave accommodating portion 13b for accommodating the spring 17 is formed. One or a plurality of slits 13c through which water can flow are formed in a portion where the groove portion 13a and the accommodating portion 13b of the movable core portion 13 overlap each other.

The flow of the sterilization medium in the closed state of the solenoid valve 10 will be described. As shown in Fig. 1, the solenoid valve 10 is in a closed state in which the movable core portion 13 and the seal portion 19 advance and the seal portion 19 closes the outlet port 11b. In this closed state, the sterilizing medium (hot water, warm water or bactericide) can be flowed in a countercurrent and countercurrent flow. Specifically, as the downstream flow, when the sterilization medium flows into the inlet port 11a of the electromagnetic valve 10, the sterilization medium is in accordance with the housing portion 13b, one or a plurality of slits 13c, one or a plurality of grooves 13a, and the sealing portion 19. The surroundings and the circulation enthalpy 11c flow in the order, and flow out to the outside of the solenoid valve 10, and circulate through a circulation line to be described later. Further, as the counterflow, when the sterilization medium flows into the circulation port 11c of the electromagnetic valve 10, the sterilization medium is in accordance with the periphery of the sealing portion 19, one or a plurality of grooves 13a, one or a plurality of slits 13c, the receiving portion 13b, and the inlet. The 埠11a flows in the order and flows out to the outside of the solenoid valve 10, and circulates through a circulation line to be described later. In the first embodiment, the sterilizing medium can flow only in a forward flow or only in a countercurrent flow, or can alternately switch between the forward flow and the reverse flow.

Next, the flow of the drinking water in the open state of the solenoid valve 10 will be described. As shown in Fig. 2, the electromagnetic valve 10 is in an open state in which the movable core portion 13 and the sealing portion 19 retreat and the sealing portion 19 opens the outlet port 11b. In this open state, when drinking water (cold water) flows from the cold water tank (not shown) to the inlet port 11a of the electromagnetic valve 10, the drinking water passes through the accommodating portion 13b, one or a plurality of slits 13c, and one in order. The periphery of the plurality of groove portions 13a and the sealing portion 19 flows out from the outlet port 11b to the outside of the electromagnetic valve 10 (cold water injection portion). Further, since the pipe connected to the circulation port 11c is closed by a valve (not shown) or the like, the drinking water does not flow out to the side of the circulation port 11c.

 (Second embodiment)  

The electromagnetic valve 20 of the second embodiment will be described with reference to Figs. 3 and 4 . The solenoid valve 20 includes a valve box (main body portion) 21 that accommodates a valve body such as a sealing portion 29 to be described later, and constitutes a flow path through which the sealing portion 29 is opened and closed, and the valve box 21 is provided separately for drinking water. An inflow port 21a; an outlet port 21b for discharging drinking water; a circulation port 21c for circulating a sterilization medium (hot water, warm water or a sterilizing agent); and a large-diameter pipe portion 21d communicating with each of the crucibles. In the valve casing 21, the inlet weir 21a, the large diameter pipe portion 21d, and the outlet weir 21b are arranged in a straight line, and the circulation weir 21c is on the side of the outlet weir 21b to form the aforementioned predetermined angle with respect to the longitudinal direction of the solenoid valve 10. The method is connected to the large diameter pipe portion 21d. Further, as shown in FIGS. 3 and 4, the circulation port 21c is provided on the side wall of the valve box 21 adjacent to the outlet port 21b.

Further, the electromagnetic valve 20 includes a movable core portion 23 that is movable forward and backward along the longitudinal direction of the large-diameter pipe portion 21d, and the seal portion 29 is provided in the large-diameter pipe portion 21d. One end (left end) of the core portion 23 can close the outlet port 21b; a return spring (giving the potential energy member) 27 applies the potential energy to the outlet port 21b; and the coil portion 25 is disposed in the large diameter pipe portion. The outer side of 21d is used to move the movable portion 23 by magnetic force. Further, the spring 27 is provided between the other end (right end) of the movable portion 23 and the inlet port 21a in the large diameter pipe portion 21d.

The sealing portion 29 is formed in a disk shape by a flexible member such as rubber. The seal portion 29 has a flange portion 29a having a diameter smaller than the diameter of the movable core portion 23 and larger than the diameter of the outlet weir 21b. The movable core portion 23 has an elongated columnar shape, and one or a plurality of groove portions 23a through which water can flow are formed along the longitudinal direction on the outer peripheral curved surface. The inter-turn flow path between the inlet port 21a and the outlet port 21b is formed through the groove portion 23a. Further, the groove portion may be formed not on the outer surface of the movable core portion 23 but on the inner surface of the large diameter pipe portion 21d. Further, the space between the inner surface of the valve casing 21 and the outer surface of the movable core portion 23 may be formed without forming a groove from the inlet port to the outlet port, thereby forming an inter-turn flow path. The extension pipe portion 21a1 is provided on the other end (the right end of the third figure) of the movable core portion 23, and the extension pipe portion 21a1 extends the pipe of the inlet port 21a into the large diameter pipe portion 21d. The annular space formed between the outer surface of the extension pipe portion 21a1 of the inlet weir 21a and the inner surface of the large diameter pipe portion 21d constitutes the accommodating portion 21e of the accommodating spring 27. An opening 21a2 is formed to extend toward the end surface of the tube portion 21a1 so as to face the movable core portion 23. One or a plurality of slits 21a3 are formed in parallel with the longitudinal direction of the large diameter pipe portion 21d around the extension pipe portion 21a1. Water can flow between the inlet port 21a and the inside of the large diameter pipe portion 21d through the opening 21a2 and the slit 21a3.

The flow of the sterilization medium in the closed state of the solenoid valve 20 will be described. As shown in Fig. 3, the solenoid valve 20 is in a closed state in which the movable core portion 23 and the sealing portion 29 advance and the sealing portion 29 closes the outlet port 21b. In this closed state, the sterilization medium (hot water, warm water or bactericide) for sterilization can be flowed in a countercurrent flow and a countercurrent flow. Specifically, as the downstream flow, when the sterilization medium flows into the inlet port 21a of the electromagnetic valve 20, the sterilization medium is sealed in accordance with the opening 21a2, one or a plurality of slits 21a3, the accommodating portion 21e, one or a plurality of groove portions 23a, and the sealing medium. The order around the portion 29 flows, and flows out to the outside of the electromagnetic valve 20, and is circulated through a circulation line to be described later. Further, when the sterilization medium flows into the circulation port 21c of the electromagnetic valve 20, the sterilization medium is in accordance with the periphery of the sealing portion 29, one or a plurality of groove portions 23a, the housing portion 21e, the opening 21a2, and one or a plurality of slits. The slit 21a3 and the inlet port 21a flow in the order, and flow out to the outside of the solenoid valve 20, and are circulated by a circulation pipe to be described later. In the second embodiment, the sterilizing medium can flow only in a forward flow or only in a countercurrent flow, or can alternately switch between the forward flow and the reverse flow.

Next, the flow of the drinking water in the open state of the solenoid valve 20 will be described. As shown in Fig. 4, the solenoid valve 20 is in an open state in which the movable core portion 23 and the seal portion 29 retreat and the seal portion 29 opens the outlet port 21b. In this open state, when drinking water (cold water) flows from the cold water tank (not shown) to the inlet port 21a of the electromagnetic valve 20, the drinking water passes through the extension pipe portion 21a1, one or a plurality of slits 21a3, and the like. The portion 12e, the one or a plurality of groove portions 23a, and the periphery of the sealing portion 29 flow out from the outlet port 21b to the outside of the electromagnetic valve 20. Further, since the circulation path connected to the circulation port 21c is closed by a valve (not shown), the drinking water does not flow out to the side of the circulation port 21c.

 (circulation line)  

Next, the state in which the solenoid valve 10 of the first embodiment is connected to the circulation line will be described using Figs. 5 and 6 . In the fifth and sixth figures, the solenoid valves 10 are all set to the closed state. In addition, in the fifth and sixth figures, the electromagnetic valve 10 of the first embodiment is disposed in each circulation line, but the electromagnetic valve 20 of the second embodiment may be disposed in the same manner in each circulation line.

The circulation line 30 will be described using Fig. 5(a). In the circulation line 30, a heater (heating member) 31 is provided below the line connected to the circulation port 11c. Since the solenoid valve 10 is disposed in a horizontal shape, the inlet port 11a and the outlet port 11b are arranged in the lateral direction, and the circulation port 11c faces downward. When the circulation line 30 performs sterilization, when the heater 31 heats the water in the pipeline, the water is heated to become a sterilization medium (hot water) and rises in the pipeline by convection, and according to the circulation 埠11c, electromagnetic The inside of the valve 10 and the inlet port 11a are circulated in order.

The circulation line 40 will be described using Fig. 5(b). In the circulation line 40, a heater 41 (heating member) is provided below the line connected to the circulation port 11c. Since the solenoid valve 10 is arranged in a vertical shape, the inlet port 11a and the outlet port 11b are arranged in the longitudinal direction, and the circulation port 11c faces the lateral direction. When the circulation line 40 performs sterilization, when the heater 41 heats the water in the pipeline, the water is heated to become a sterilization medium (hot water) and rises in the pipeline by convection, and according to the circulation 埠11c, electromagnetic The inside of the valve 10 and the inlet port 11a are circulated in order.

The circulation line 50 will be described using Fig. 6(a). In the circulation pipe 50, a heater (heating member) 51 is provided in a pipe branched from the pipe connected to the inlet port 11a to the lower side. Since the solenoid valve 10 is disposed in a horizontal shape, the inlet port 11a and the outlet port 11b are arranged in the lateral direction, and the circulation port 11c faces the lateral direction. When the circulation line 50 is sterilized, when the heater 51 heats the water in the line, the water is heated to become a sterilization medium (hot water) and rises in the line by convection, and according to the inlet port 11a, electromagnetic The inside of the valve 10 and the cycle 埠 11c are circulated in the order.

The circulation line 60 will be described using Fig. 6(b). In the circulation line 60, a heater (heating member) 61 is provided in a line branched from the line connected to the inlet port 11a to the lower side. Since the solenoid valve 10 is arranged in a vertical shape, the inlet port 11a and the outlet port 11b are arranged in the longitudinal direction, and the circulation port 11c faces the lateral direction. When the circulation line 60 performs sterilization, when the heater 61 heats the water in the piping, the water is heated to become a sterilization medium (hot water) and rises in the pipeline by convection, and according to the inlet port 11a, electromagnetic The inside of the valve 10 and the cycle 埠 11c are circulated in the order.

According to the electromagnetic valve of the first or second embodiment of the present invention, all the internal surfaces of the electromagnetic valve other than the surface of the sealing portion on the side close to the outlet port and the outlet port can be circulated, so that the electromagnetic valve can be efficiently performed. The entire solenoid valve is heated to the sterilization temperature in a short period of time to obtain an appropriate sterilization effect, and the energy required for sterilization can be reduced more than the prior art.

Further, in the first or second embodiment of the present invention, the water dispenser for supplying water is described as a beverage supply device including the electromagnetic valve 10 or the electromagnetic valve 20. However, the present invention is not limited to the water dispenser, and may be, for example, Suitable for beverage supply devices that supply cool drinking water. Further, in the first and second embodiments of the present invention, the electromagnetic valve 10 or 20 is provided in the beverage supply device, but the present invention is not limited thereto, and the electromagnetic valve may be provided in a liquid that supplies any liquid that is not a beverage. Supply device.

Claims (21)

 A solenoid valve comprising: a valve box; an inlet port for flowing a beverage into the valve box; an outlet port for discharging a beverage from the valve box; and a movable portion being between the inlet port and the outlet port Storing in the valve box; the sealing portion is provided on one end side of the movable portion to close the outlet port; and the potential energy member is provided on the other end side of the movable portion to allow the outlet port to be The closing means applies a potential energy to the sealing portion; the solenoid valve includes a day-to-day flow path for flowing a beverage from the inlet port to the outlet port, and a circulation port connected to the port on the side of the outlet port The intermediate flow path is configured to allow the sterilization medium to flow through the inter-turn flow path between the inlet port and the circulation port in a state where the sealing portion closes the outlet port.    The solenoid valve according to claim 1, wherein the inter-turn flow passage is one or a plurality of grooves formed on an inner surface of the valve casing or an outer surface of the movable portion, or is formed in the foregoing a space between the inner surface of the valve box and the outer surface of the aforementioned movable portion.    The solenoid valve according to claim 1 or 2, wherein the circulation cymbal is disposed on a side wall of the valve casing adjacent to the outlet port.    The solenoid valve according to any one of claims 1 to 3, wherein the circulation cymbal is disposed so as to form a predetermined angle with respect to a longitudinal direction of the solenoid valve.    The solenoid valve according to any one of the first to fourth aspect, wherein the valve box includes a movable portion accommodating portion that allows the movable portion to move forward and backward In a mode, the diameter of the movable portion accommodating portion is larger than a diameter of the inlet port and/or the outlet port.    The solenoid valve according to any one of the first aspect, wherein the movable portion is a movable core portion, and the electromagnetic valve includes a coil portion for moving the movable core portion by a magnetic force. .    The electromagnetic valve according to any one of claims 1 to 6, wherein the potential energy-applying member is a spring, and the electromagnetic valve includes a housing portion that accommodates the spring.    The electromagnetic valve according to claim 7, wherein the accommodating portion is a concave accommodating portion provided on the other end side of the movable portion, and the spring is housed in the inlet 埠 and the concave accommodating portion. Between the ministries.    The solenoid valve according to claim 8, wherein one or a plurality of slits are provided in the concave accommodating portion, and the inter-turn flow path and the inlet port are communicated through the slit.    The solenoid valve according to claim 7, wherein the solenoid valve includes an extension pipe portion extending from the inlet port into the valve casing, and the housing portion is formed in the extension pipe portion and the valve casing. The annular housing between the two.    The solenoid valve according to claim 10, wherein one or a plurality of slits are provided in the extension pipe portion, and the inter-turn flow passage and the inlet port are communicated through the slit.    The solenoid valve according to claim 10, wherein the extension pipe portion has an opening at a distal end thereof, and the inter-turn flow passage and the inlet port communicate with each other through the opening.    The solenoid valve according to any one of claims 1 to 12, wherein the circulation raft is provided in a lower portion of the valve casing.    The electromagnetic valve according to any one of claims 1 to 13, wherein the sterilizing medium is hot water.    A beverage supply device is provided with a solenoid valve according to any one of claims 1 to 14.    The beverage supply device according to claim 15, wherein the heating means is provided in a pipe connected to the circulation port or the inlet port.    The beverage supply device according to claim 16, wherein the sterilization medium generated by the heating of the heating member is transmitted through the circulation port or the inlet port in a state where the sealing portion closes the outlet port. Go to the aforementioned solenoid valve.    The beverage supply device according to claim 16 or 17, wherein the sterilization medium is supplied to the electromagnetic valve through the circulation port or the inlet port by convection generated by heating by the heating member. Inside.    The beverage supply device according to any one of claims 15 to 18, further comprising a circulation line for circulating the sterilization medium to the electromagnetic valve.    A water dispenser, which is a beverage supply device according to any one of claims 15 to 19.    The water dispenser according to claim 20, wherein the water valve is provided on the cold water supply unit side.