JP6219082B2 - Drinking water dispenser and water sterilization method - Google Patents

Description

  The present invention relates to a drinking water dispenser that supplies drinking water from a replaceable drinking water bag, and more particularly, and a heat sterilization means for a member that may be contaminated when the drinking water bag is replaced, and The present invention relates to a heat sterilization method.

A drinking water bag is a thin plastic bag part filled with drinking water, and uses a lightweight and inexpensive bag part to facilitate commercial distribution of drinking water. This replaceable drinking water bag can be installed in a more permanent drinking water supply machine to supply drinking water easily.
By the way, all parts of this drinking water bag are sterilized at the time of commercialization, but when installed in this drinking water dispenser, the interior of the water flow valve, water flow opening, etc. inevitably floats in the atmosphere and the atmosphere. The entire drinking water dispenser may be contaminated by the propagation of these bacteria. Moreover, the piping installed in the direction of the drinking water dispenser may similarly come into contact with bacteria at the time of installation of the drinking water bag. Therefore, sterilizing these piping parts is inevitable in terms of hygiene.
An example of such pipe sterilization is disclosed in, for example, Japanese Patent Application Laid-Open No. 2008-156001 (hereinafter referred to as “Patent Document 1”). In Patent Document 1, heat sterilization is performed by circulating hot water stored in a hot water tank to a cold water tank and other piping parts.

JP 2008-156001 A

However, the heat sterilization as in Patent Document 1 has a problem to be improved. That is, since it is necessary to circulate the hot water in the hot water tank to other piping parts, the circulation mechanism becomes complicated. In addition, it is necessary to circulate a large amount of hot water during heat sterilization, and power consumption becomes enormous.
Accordingly, the inventor has found a need to achieve a sterilization means and method for a drinking water dispenser that is energy saving and efficient and can be implemented with a simple mechanism.

  This invention is made | formed in order to solve this subject, and this inventor temporarily opens the water supply valve of a drinking water bag, after installing a drinking water bag with a drinking water feeder. Therefore, it is possible to temporarily fill the drinking water only to the piping part where the contact with the atmosphere is remarkable, and by heating this filling water, only the part having high possibility of bacterial contamination can be sterilized uniformly, In addition, it was confirmed by experiments and the like that the limit temperature of the pipe portion could not be exceeded. The present invention is based on this experimental result.

  Accordingly, the first aspect of the present invention includes a bag portion filled with drinking water, a water passage valve disposed at the opening portion of the bag portion and openable and closable, and opened at a front end of the water passage valve. A drinking water bag having at least a water passage through which the drinking water is led out, a bag storage unit in which the drinking water bag is housed, a joint pipe detachably connected to the water passage at one end, and the water passage; A joint adapter that shields and holds the joint portion of the joint pipe from the outside, and a heater device that heats the filled water filled with the drinking water through and inside the water valve and the joint pipe And a drinking water dispenser having at least a drinking water tank communicating with the other end of the joint pipe and temporarily storing the drinking water.

  A second aspect of the present invention is a drinking water dispenser in which the heater device is disposed on the joint pipe and / or the joint adapter.

  A third aspect of the present invention is a drinking water dispenser provided with a heating control means for heating the heater device.

  The 4th form of this invention is a drinking water dispenser provided with the safety cover which shields the outer periphery of the said joint adapter.

  A fifth aspect of the present invention is a drinking water dispenser in which a switch for starting the heater device is provided in the safety cover, and the switch is started when the safety cover is attached.

  A sixth aspect of the present invention is a drinking water dispenser in which a switch for starting the heater device is provided in the joint adapter, and the switch is started when the joint adapter is attached.

  According to a seventh aspect of the present invention, there is provided a bag portion that is filled with drinking water, a water passage valve that is disposed at an opening portion of the bag portion and that can be freely opened and closed, and that is opened at a front end of the water passage valve and is the beverage. When replacing a drinking water bag having at least a water outlet from which water is derived, a new drinking water bag is stored in the bag storage unit, one end of a joint pipe is connected to the water outlet, and the water outlet and the joint pipe are connected. The joint portion is shielded and held from the outside by a joint adapter, and the inside of the water flow valve and the inside of the joint pipe is filled with the drinking water by filling it with water, and the filled water is heated by a heater device. It is a water heater heat sterilization method which heats and sterilizes the inside of the water flow valve, the inside of the joint pipe, and the full water.

  The eighth aspect of the present invention is a water heater heat sterilization method for sterilizing the full water by heating the joint pipe and / or the joint adapter by the heater device and transferring the heat to the full water. .

Ninth aspect of the present invention, the filling water is water supply heat sterilization method which is heated by a predetermined heating time t _h.

  In a tenth aspect of the present invention, after the filling water is filled, a safety cover is arranged around the joint adapter, and heating of the filling water is started when the safety cover is arranged. This is a heat sterilization method.

  An eleventh aspect of the present invention is a water heater heat sterilization method in which, when the joint adapter is attached, the full water is filled and heating of the full water is started.

According to the first aspect of the present invention, since it has a heater device that heats the filled water filled with the drinking water through the interior of the water flow valve and the joint pipe, it floats in the atmosphere. By bringing the inside of the water inlet and the joint pipe contaminated with bacteria into contact with heated full water, these pipe parts can be uniformly heat sterilized. In the prior art, heat sterilization was performed by introducing hot water from a hot water tank of a drinking water feeder into the water inlet and the joint pipe, but in such an apparatus, the mechanism becomes complicated. There were drawbacks. According to this embodiment, these piping portions can be reliably heat sterilized using a simple mechanism.
The heater device in this embodiment is preferably a Joule heating device, but induction heating or dielectric heating can also be used. As described in the second embodiment, the heater device is preferably installed in the joint adapter and / or the joint pipe, but may be installed in the water flow valve or the water flow port.
In order to reduce the weight and facilitate the production, the water flow valve and the water flow opening of the drinking water bag in this embodiment are usually made of plastic. The joint adapter and the joint pipe in this embodiment may be made of a metal such as stainless steel, copper or aluminum in order to impart heat resistance, or may be made of plastic in order to reduce the weight and facilitate production. good. Since heat sterilization in this embodiment is performed at a temperature of about 70 to 80 ° C., even plastics are sufficiently resistant.
In the drinking water dispenser according to the present invention, it is preferable that a drinking water tank for temporarily storing drinking water before supply is interposed between the joint pipe and the water inlet. By providing the drinking water tank with a cooling mechanism, it is possible to supply cold water, and by providing a heating mechanism, it is possible to supply hot water.

  According to the second aspect of the present invention, since the heater device is disposed in the joint pipe and / or the joint adapter, these portions can be reliably sterilized by heating the portions to be heat sterilized. . As described in the first embodiment, the heater device in this embodiment is preferably a joule heating device, but an induction heating device, a dielectric heating device, or the like can also be used.

According to the third aspect of the present invention, in the drinking water dispenser, since the heating control means is provided to heat the heater device, the operation time of the heater device using the heating control means By controlling the temperature of the filling water, the heating can be controlled so that the temperature of the filling water does not exceed the limit temperature of the material forming the water passage and the joint pipe.
For example, using the heating control means, it is possible to heat the filling water for a predetermined heating time t _h. The predetermined heating time t _h are of course also be achieved by controlling the heater operation time by a manual switch, by using the heating control means in the present embodiment, automatically predetermined heating time t _h only heater device Can be operated to prevent damage due to overheating of the piping part. The predetermined heating time t _h is obtained by experiments in advance. In this test, the temperature of the full water being heated is measured by a thermometer, a temperature sensor, or the like, and the heater operating time before reaching the limit temperature of the piping component is determined.
Further, in the heating control means, by connecting a temperature sensor for measuring the temperature of the filling water, by performing the heating control based on the temperature, so that the temperature of the filling water does not exceed a predetermined heating temperature T _h Heat sterilization can also be performed. Here, the predetermined heating temperature _Th is equal to or lower than the limit temperature of the pipe component.

  According to the 4th form of this invention, since the safety cover which shields the outer periphery of the said joint adapter was provided, a burn can be prevented with a safety cover. In the heat sterilization process, the vicinity of the water inlet and the vicinity of the joint pipe are heated, so it is necessary to cover them to prevent burns. In particular, the vicinity of the water inlet is a place where it is easy to make an erroneous contact, and it is necessary to coat it during heat sterilization.

  According to the fifth aspect of the present invention, a switch for starting the heater device is provided in the safety cover, and the switch is started when the safety cover is attached. By providing this, the heating control means in the present invention can be reliably started by mounting the safety cover.

  According to the sixth aspect of the present invention, a switch for starting the heater device is provided in the joint adapter, and the switch is started when the joint adapter is attached. By providing, the heating control means in the present invention can be reliably started by connecting the water flow port and the joint pipe. In this embodiment, the heating control means is started before the filled water is filled into the water inlet and the joint pipe, but the water valve is opened immediately after the joint adapter is attached. The filled water can be heated safely without emptying.

  According to the seventh aspect of the present invention, in the water heater heat sterilization method, the drinking water is passed through and filled into the interior of the water flow valve and the joint pipe to fill the filled water. Since the inside of the water flow valve, the inside of the joint pipe, and the filled water are sterilized by heating with a heater device, the water inlet and the joint pipe contaminated by bacteria floating in the atmosphere as in the first embodiment These pipe parts can be uniformly heat sterilized by bringing the inside of the tube into contact with heated full water.

  According to an eighth aspect of the present invention, in the water heater heat sterilization method, the joint pipe and / or the joint adapter is heated by the heater device and is transferred to the full water, whereby the full water is obtained. As in the second embodiment, these parts can be reliably sterilized by heating the parts to be heat sterilized.

According to a ninth aspect of the present invention, in the water supply heat sterilization method, since the filling water is heated for a predetermined heating time t _h, as in the third embodiment, to form a passage Mizuguchi and joint pipe The heating of the full water can be performed to the extent that the limit temperature of the material is not exceeded.

  According to the 10th form of this invention, after the said filling water is filled, when the safety cover is arrange | positioned around the said joint adapter and the said safety cover is arrange | positioned, the heating of the said filling water is started. Therefore, as in the fourth embodiment, it is possible to prevent burns by the safety cover, and by incorporating a switch in the safety cover, as in the fifth embodiment, the heater can be reliably attached by mounting the safety cover. The device can be started.

  According to the eleventh aspect of the present invention, in the water heater heat sterilization method, when the joint adapter is attached, the filling water is filled and heating of the filling water is started. Similarly to the form, the heater device can be reliably started by the connection of the water inlet and the joint pipe, and the filled water can be sterilized. Since the joint adapter in this embodiment is provided with a switch for starting the heater device, the heater device is turned on when the joint adapter is attached. Thereafter, the water flow valve is opened to fill the full water, and at the same time, heating of the full water is started.

It is the front view (1A) and side view (1B) of the drinking water feeder 2 equipped with the heater apparatus which concerns on this invention. It is AA sectional drawing (2A) and BB sectional drawing of the drinking water dispenser 2 in FIG. It is CC partial expanded sectional view which shows the water supply valve 10 of the joint adapter 4 and piping of the drinking water dispenser 2 in FIG. It is a conceptual partial expanded sectional view which shows the state removed from the water flow opening 6 of the water flow valve 10 in the joint adapter 4 in FIG. It is CC partial expanded sectional view which shows what equips the lower surface of the curved pipe part of the joint pipe | tube 36 in FIG. 3 with the rod-shaped heater 12 penetrated through the hole 35 drilled. It is CC partial expanded sectional view which shows what incorporated the heater 12 in the inside of the joint adapter 4 in FIG. It is CC partial expanded sectional view which shows what equips the microswitch 14 inside the joint adapter 4 in FIG. It is a notional partial expanded sectional view showing what attached the safety cover to the exterior of joint adapter 4 in FIG. It is CC partial expanded sectional view which shows what equipped the full water sensor 15 inside the joint pipe | tube 36 in FIG. It is CC partial expanded sectional view which shows what equipped the temperature sensor 17 inside the joint pipe | tube 36 in FIG. It is the front view (11A) and side view (11B) of the drinking water dispenser 2 which supplies hot water and cold water. It is DD sectional drawing of the drinking water dispenser 2 in FIG. It is a wiring diagram (13A) and a time chart (13B) of a heater device in a drinking water dispenser designed to manually turn on and off a heater. It is the wiring diagram (14A) and time chart (14B) of a heater apparatus in the drinking water dispenser which equips a timer and controls the operation time of a heater with a timer. Wiring diagram of the heater device in a drinking water dispenser equipped with a filling water detection means and a timer, the timer is activated when the filling water is filled into the water inlet and the joint pipe, and the operation time of the heater is controlled by the timer ( 15A) and a time chart (15B). Equipped with temperature rise control means, at the time when the temperature T of the filled water reaches a predetermined heating temperature T _h, the drinking water supply unit the heater is turned off, the wiring diagram of the heater device (16A) and a time chart (16B ). It is a block diagram of the drinking water dispenser in which heat sterilization operation is controlled by CPU. It is a flowchart of the heat sterilization process in the drinking water dispenser which performs ON operation and OFF operation of a heater manually. It is a drinking water feeder which controls the operation time of a heater with a timer, and is a flowchart of the heat sterilization process in the drinking water feeder which a timer operates with a manual switch. It is a flowchart of the heat sterilization process in the drinking water dispenser which a timer operates by mounting | wearing with a safety cover. It is a flowchart of the heat sterilization process in the drinking water dispenser which a timer operates by filling with full water. It is a flowchart of the heat sterilization process in the drinking water dispenser which a timer operates by connection of a joint pipe and a water flow port. Equipped with temperature rise control means, at the time when the temperature T of the filled water reaches a predetermined heating temperature T _h, the drinking water supply unit the heater is turned off, a flow chart of the heat sterilization treatment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view (1A) and a side view (1B) of a drinking water dispenser 2 equipped with a heater device according to the present invention. The drinking water dispenser 2 in this figure is composed of a bag storage portion 18 and a water dispenser body 20. A drinking water bag is stored in the bag storage unit 18, and a drinking water tank 42 for temporarily storing drinking water is provided in the water supply body 20. The drinking water tank 42 is communicated with the water inlet 22, and drinking water is supplied from the water inlet 22. A heating switch 24 for starting the heater 12 (heater device) is disposed at the front of the water supply body 20.

FIG. 2 is an AA sectional view (2A) and a BB sectional view of the drinking water dispenser 2 in FIG. In the bag storage part 18, the installation shelf 26 in which the drinking water bag 8 is installed forms a bottom part. The drinking water bag 8 includes a bag portion 7 filled with drinking water, a water passage valve 10 installed in the opening portion 9 of the bag portion and openable and closable, and opened at a tip of the water passage valve and the beverage. At least the water inlet 32 through which water is led out is provided.
As described in the description of FIG. 1, the drinking water tank 42 disposed in the water main body 20 temporarily stores the drinking water supplied from the drinking water bag 8 before provision. The drinking water tank 42 may have a cooling function or a heat and heat retaining function.
The water inlet 32 of the drinking water bag 8 and the drinking water tank 42 include a joint pipe 36 that can be connected to the water inlet 32 at the end, a connecting pipe 38 that is a tube formed of a flexible material, and a drinking water tank. They are connected by a pipe made of an introduction pipe 40 that is directly connected to 42. The connection part 34 of the water flow port 32 and the joint pipe 36 is fixed by a joint adapter 4 which is a connection member. 3 and 5, the heater 12 (heater device) is disposed in the joint pipe 36 and / or the joint adapter 4, and the heater fills the water inlet 20 and the joint pipe 36 with the filled water. Sterilize by heating.
The outlet pipe 44 extends from the bottom of the drinking water tank 42, and the drinking water is supplied from the water injection valve 21 to the water inlet 22 through a pump 46 that sends out the drinking water and a water injection pipe 48 from which the drinking water sent out from this pump is pumped. Provided via. That is, the water inlet 22 in the present invention includes the water valve 10, the water inlet 32, the joint pipe 36, the connection pipe 38, the inlet pipe 40, the drinking water tank 42, the outlet pipe 44, the pump 46 and the water inlet pipe of the drinking water bag 8. It communicates with the piping system comprised from 48 and provides the drinking water which distribute | circulates through this piping system.

3 is a C-C partial enlarged cross-sectional view showing the joint adapter 4 and piping of the drinking water dispenser 2 in FIG. 1 and the water flow valve 10 of the drinking water bag 8. 4 and 9, only the flange 50 that reinforces the joint adapter 4, the joint pipe 36, the connection pipe 38, and the connection portion between the drinking water tank 42 and the connection pipe 38 is shown as a cross section. As shown in the figure, the heater 12 is arranged around the joint pipe 36 in a coiled form. The heater 12 generates heat by Joule heat. As a heating mechanism of the heater 12, induction heating (IH) that heats the metal constituting the joint pipe 36 and the like by electromagnetic waves, and dielectric that heats the filled water by microwaves. Heating can also be used. The heater 12 in this figure is turned on or off by operating the heating switch 24 in FIG. 1, but other operating mechanisms are illustrated in FIGS.
After the drinking water bag 8 is replaced, the water inlet 32 and the joint pipe 36 are connected, and the water inlet 32 and the joint pipe 36 are connected and fixed by the joint adapter 4 at the connecting portion 34, and then the cock lever 28 of the water inlet valve 10 is moved. It is rotated to open the water valve 10 for a short time, and the drinking water is filled only in the water valve 10 and the joint pipe 36. Thereafter, the cock lever 28 is rotated in the reverse direction to close the water flow valve 10. The full water is in contact with the inside of the water inlet 32 and the inside of the joint pipe 36 that may have been contaminated with bacteria due to exposure to the atmosphere. However, when the heater 12 is turned on, the joint pipe 20 is heated. And this heat is transferred to the full water. By heating the filling water, the inside of the joint pipe 36 and the inside of the water flow valve 10 are uniformly and uniformly transferred to be sterilized by heating.

FIG. 4 is a conceptual partial enlarged cross-sectional view showing a state where the joint adapter 4 in FIG. 3 is removed from the water flow port 32 of the water flow valve 10. As illustrated, the joint adapter 4 and the joint pipe 36 can be easily detached from the water passage 32 due to the elasticity of the connection pipe 38.
When the drinking water bag 8 is replaced, the water inlet 32 of the water valve 10 and the interior close to the end of the joint pipe 36 are exposed to the atmosphere, so these parts are easily contaminated with bacteria. Therefore, it is necessary to sterilize these parts before the start of water supply by the drinking water dispenser 2, but by operating the heater mechanism (heater 12) of the present invention to heat the full water, these parts are It is sterilized by heating effectively and completely.

FIG. 5 is a partially enlarged cross-sectional view taken along the line C-C showing the heater 12 that penetrates the curved pipe portion of the joint pipe 36 in FIG. 3. The heater 12 here is rod-shaped, and penetrates through a hole portion 35 drilled in the lower surface of the bent tube portion of the joint tube 36. A current cord 37 is provided at the lower end of the heater. In what is illustrated in FIG. 4, the second and eighth aspects of the present invention are implemented, while in FIG. 5, the first and seventh aspects of the present invention are implemented. Since the joint adapter 4 and the joint pipe 36 are not directly heated by the heater 12, these pipes can be formed from a material having relatively low heat resistance. Moreover, in FIG. 5, since filled water is directly heated by the heater 12, the efficiency of filling water heating is good.
Although the heater 12 in FIG. 5 is disposed inside the joint pipe 36, the upper end of the rod-shaped heater 12 may extend to the inside of the water flow port 32 of the water flow valve 10. As described above, when the heater 13 extends to the inside of the water passage 32, the filling water filled in the water passage 32 is also efficiently heated in the same manner as the filling water in the joint pipe 36.

  FIG. 6 is a partial enlarged cross-sectional view taken along the line C-C showing the joint adapter 4 shown in FIG. The joint adapter 4 is heated by the heater 12 and is transferred to the full water, whereby the pipe portion in contact with the full water is heat sterilized. Since the Jonto adapter 4 is in direct contact with the water inlet 32 at the connecting portion 34, heating of the filled water in the water inlet 32 can be made efficient. Of course, the heater 12 may be installed in both the joint adapter 4 and the joint pipe 36.

  FIG. 7 is a partial enlarged cross-sectional view taken along the line CC, showing a micro switch 14 that is a switch inside the joint adapter 4 in FIG. When the joint adapter 4 fixes the connection state, the micro switch 14 is activated, and the heater 12 connected to the micro switch 14 is activated. After the heater 12 is turned on, the cock lever 28 of the water flow valve 10 is rotated to fill the filled water into the water inlet 32 and the joint pipe 36. The joint pipe 36 has already been heated by the heater 12, but heat is transferred immediately when the full water is filled, and the inside of the water flow valve 10, the inside of the water flow port 32, and the inside of the joint pipe 36 are heat sterilized. .

  FIG. 8 is a conceptual partial enlarged cross-sectional view showing the safety adapter 16 attached to the outside of the joint adapter 4 in FIG. When the water is heated by the heater 12, it is preferable to temporarily shield the joint adapter 4 and / or the joint pipe 36 with the removable safety cover 16 in order to prevent burns due to erroneous contact. The safety cover 16 in this figure is equipped with a micro switch 14, and when the safety cover 16 is attached to the joint adapter 4 and / or the joint pipe 36, the micro switch is activated and the heater 12 is turned on to fill. Water heating is started.

  FIG. 9 is a partial enlarged cross-sectional view taken along the line C-C showing the full water sensor 15 provided inside the joint pipe 36 in FIG. 3. The full water sensor 15 is a full water detection means, is built in the joint adapter 4 and / or the joint pipe 36, and is connected to the full water sensor 15 when the full water is filled in the joint pipe 36 and the water passage 34. The activated switch is activated, the heater 12 is turned on, and heat sterilization of the full water is automatically started. The full water sensor 15 can be selected from a variety of devices such as optical means for detecting changes in refractive index and light absorption rate, and electrical means for detecting changes in conductivity, as required.

FIG. 10 is a partially enlarged cross-sectional view taken along the line C-C showing the temperature sensor 17 provided inside the joint pipe 36 in FIG. At the time of heat sterilization, it is preferable that the temperature of the filling water does not exceed the tolerance temperature of the joint pipe 36 and the water flow valve 10. In particular, when the joint pipe 36 and / or the water flow valve 10 is formed of a resin or the like, the resistance temperature is particularly important.
Temperature control of such filling water, for example, set the predetermined heating time t _h, it is conceivable to heat only fill water the predetermined heating time t _h. This method can be implemented relatively easily by using a timer or the like, but the temperature of the full water is directly measured and a heater is used so that this temperature does not exceed the resistance temperature of the water flow valve 10 or the like. More preferably, 12 is controlled.
The temperature sensor 17 measures the temperature T of the full water. The temperature sensor 17 is connected to a temperature rise controller and heater 12, the temperature rise control, the temperature T is a predetermined heating temperature T _h is less resistant temperature of the piping member in order to raise the upper limit, the heater 12 is operated and controlled. The temperature sensor 17 is most preferably a thermocouple or a thermistor, but an infrared measuring device can also be used, for example.

  FIG. 11: is the front view (11A) and side view (11B) of the drinking water dispenser 2 which supplies hot water and cold water. Moreover, FIG. 12 is DD sectional drawing of the drinking water feeder 2 in FIG. As illustrated in FIG. 12, two drinking water tanks are equipped. The warm water tank 42a is equipped with a heating mechanism, and communicates with the warm water injection port 22a to supply warm water. The cold water tank 42b is equipped with a cooling mechanism, and communicates with the cold water injection port 22b to supply cold water.

FIG. 13 is a wiring diagram (13A) and a time chart (13B) of the heater device in a drinking water dispenser designed to manually turn on and off the heater. The switch S is, for example, the heating switch 24 illustrated in FIG. 1, and the heater H is, for example, the heater 12 illustrated in FIG. The mechanism is very simple. When the switch S is turned on, the heater H is turned on, and when the switch S is turned off, the heater H is turned off.

FIG. 14 is a wiring diagram (14A) and a time chart (14B) of a heater device in a drinking water dispenser equipped with a timer as a heating control means and controlling the operation time of the heater by the timer. Timer T in this diagram is the operation time controller, it turned on by the switch S to the connected state, to sustain the ON state only a predetermined heating time t _h. Therefore, the timer T is heating the filled water by operating only the heater H prescribed heating time t _h. Examples of the switch S herein include an operation switch 42 illustrated in FIG. 1 and the like, a micro switch 14 illustrated in FIGS. 7 and 8, a switch connected to the full water sensor 15 in FIG. 9, and the like. . The full water sensor 15 will be described in detail with reference to FIG.

FIG. 15 shows a heater device in a drinking water dispenser equipped with a filling water detecting means and a timer, the timer is operated when the filling water is filled in the water inlet and the joint pipe, and the operation time of the heater is controlled by the timer. These are a wiring diagram (15A) and a time chart (15B). The switch S in this figure is in a connected state before the start time t ₀ , but the heater H is not turned on at this point. When the start-up time t ₀ is filled with the full water, and the full water is detected by the full-water detection means D, the switch connected to the full-water detection means D is activated to start the timer T and the heater H. . Therefore, when the full water is filled, heating of the full water is automatically started. Timer T in the figure has the same function as the timer T in FIG. 14, to heat the filling water by operating the predetermined heating time t _h only heater H.

Figure 16 is equipped with a temperature rise control unit is a heating control unit, at the time when the temperature T of the filled water reaches a predetermined heating temperature T _h, the drinking water supply unit the heater is turned off, the wiring of the heater device It is a figure (16A) and a time chart (16B). The heater device in this figure shows temperature rise control means R connected to the temperature sensor 17 in FIG. When the filled water is filled in the water inlet and the joint pipe and the switch S is connected, a temperature sensor (not shown in the figure) for measuring the temperature T of the filled water is connected to the temperature sensor. Then, the temperature rise control means for controlling the operation of the heater H is turned on, the heater H is also started, and the temperature T of the full water is raised. Temperature T is raised to a predetermined heating temperature T _h as the upper limit, the temperature T reaches a predetermined heating temperature T _h, a temperature rise control unit is the heater H is turned off. The temperature T gradually decreases, and when the temperature T decreases to near room temperature, the water valve 10 is opened and the drinking water tank 42 (or the hot water tank 42a and the cold water tank 42b) is filled with drinking water. The drinking water dispenser 2 is put into use.

FIG. 17 is a block diagram of a drinking water dispenser in which the heat sterilization operation is controlled by the CPU. In FIGS. 13 to 16, temperature control and time control are performed by an analog circuit, but in FIG. 17, these heating controls are performed by a digital circuit. By using a digital circuit, for example, a drinking water dispenser can be controlled centrally using a CPU that controls the temperature of the hot water tank 42a and the cold water tank 42b.
The CPU 52 is connected to the ROM 51 and the RAM 54 and is connected to the drinking water dispenser 2 via the input / output port 62 (I / O port). Further, through the input and output ports 62, the desired input 56 and which is a keyboard for inputting predetermined heating time t _h and a predetermined heating temperature T _h and the like, the temperature T of the filling water, heating the elapsed time t, the hot water tank An output 58, which is a display for displaying the temperature of the 42a and the cold water tank 42b, and a clock 60 that controls the operation time of the CPU 52 and has the same function as the timer in FIGS. 14 and 15 are also connected.
In the vicinity of the Jonto adapter 4 and the joint pipe 36, the heater 12, the micro switch 14, the temperature sensor 17, the full water sensor 15, and the like are arranged, and these are connected to the CPU 52 via the input / output port 62. Therefore, in the drinking water dispenser 2 in this figure, temperature control and operation time control can be performed simultaneously.

FIG. 18 is a flowchart of the heat sterilization process in the drinking water dispenser in which the heater is manually turned on and off. The flowchart here is an operation diagram of the drinking water dispenser 2 having the heater device shown in FIG. 13, in which the water flow valve 10 of the water flow port 32 and the protective cover that holds the sterilized state of the water flow port 32 are removed (steps). S1), the water flow port 32 and the joint pipe 36 are connected and fixed by the joint adapter 4 (step S2), the water flow valve 10 is temporarily opened to fill the full water (step S3), and the heating switch 24 is It is turned on (step S4). When the full water is heated (step S5) and heated for a predetermined heating time th (step S6), the heating switch 24 is manually turned off (step S7).

FIG. 19 is a flowchart of a heat sterilization process in a drinking water dispenser that controls the operation time of the heater by a timer that is a heating control means, and the timer is operated by a manual switch. Similarly to FIG. 18, the water flow valve 10 of the water flow port 32 and the protective cover that maintains the sterilized state of the water flow port 32 are removed (step S <b> 8), and the water flow port 32 and the joint pipe 36 are connected and fixed by the joint adapter 4. (Step S9), the water flow valve 10 is temporarily opened to fill the filled water (Step S10), and the heating switch 24 is turned on (Step S11). Here, a timer is started and heating of the full water is started (step S12). When the predetermined heating time th elapses (step S13), the timer stops and the heater also stops (step S14).

FIG. 20 is a flowchart of the heat sterilization process in the drinking water dispenser in which the timer is activated by attaching the safety cover 16. (Refer to FIG. 8 for the safety cover 16.) As in FIG. 18, the water flow valve 10 of the water flow port 32 and the protective cover that holds the sterilized state of the water flow port 32 are removed (step S 15). And the joint pipe 36 are connected and fixed by the joint adapter 4 (step S16), and the water flow valve 10 is temporarily opened to fill the filled water (step S17). Here, the safety cover 16 is attached (step S18), the timer is started by the micro switch 14 provided in the safety cover 16 (step S19), and heating of the full water is started (step S20). When the predetermined heating time _{t h} has elapsed (step S21), and the timer is also stopped heater is stopped (step S22). After the heater is stopped, the safety cover 16 is removed (step S23).

FIG. 21 is a flowchart of a heat sterilization process in a drinking water dispenser in which a timer is activated by filling full water. In this figure, the full water is detected by a full water sensor 15 as shown in FIG. As in FIG. 18, the water flow valve 10 of the water flow port 32 and the protective cover that maintains the sterilized state of the water flow port 32 are removed (step S 24), and the water flow port 32 and the joint pipe 36 are connected and fixed by the joint adapter 4. (Step S25), the water flow valve 10 is temporarily opened to fill the filled water (Step S26). This full water is detected by the full water sensor 15, a timer is started (step S27), and heating of the full water is started (step S28). When the predetermined heating time _{t h} has elapsed (step S29), the timer also stops the heater is stopped (step S30).

FIG. 22 is a flowchart of a heat sterilization process in a drinking water dispenser in which a timer is operated by connecting a joint pipe and a water passage. Similarly to FIG. 18, the water flow valve 10 of the water flow port 32 and the protective cover that maintains the sterilized state of the water flow port 32 are removed (step S 31), and the water flow port 32 and the joint pipe 36 are connected and fixed by the joint adapter 4. (Step S32). At the time of fixing, the micro switch 14 provided in the joint adapter 4 is turned on, and the timer and the heater 12 are started (step S33). At this time, since the filled water is not yet filled in the water flow valve 10, the water flow port 32, and the joint pipe 36, the water flow valve 10 is temporarily opened to fill the filled water (step S34). . Since the filling water is transferred from the joint pipe 36 and / or the joint adapter 4 that has already been heated, the heating of the filling water is started simultaneously with the filling (step S35). When the predetermined heating time _{t h} has elapsed (step S36), the heater 12 timer is stopped also turned off (step S37).

Figure 23 is equipped with a temperature rise control unit is the heating control means, at the time when the temperature T of the filled water reaches a predetermined heating temperature T _h, heaters in drinking water supply unit to be turned off, the heat sterilization treatment It is a flowchart. Similarly to FIG. 18, the water flow valve 10 of the water flow port 32 and the protective cover for maintaining the sterilized state of the water flow port 32 are removed (step S38), and the water flow port 32 and the joint pipe 36 are connected and fixed by the joint adapter 4. (Step S39), the water flow valve 10 is temporarily opened to fill the water (Step S40), the heating switch 24 is turned on (Step S41), the temperature sensor, the temperature rise control means and the heater are turned on. Start (step S42). At the time the filling water reaches a predetermined heating temperature T _h (step S43), the temperature sensor and the temperature rise control means, the heater is turned off (step S44).

  It should be noted that the present invention is not limited to the above-described embodiment, but includes modifications, design changes, and the like within the technical scope without departing from the technical idea of the present invention. Nor.

  By using the drinking water feeder and the water sterilization method of the present invention, the water inlet of the drinking water bag and the piping of the drinking water feeder exposed to bacteria in the atmosphere can be sterilized by heating. Since the heat sterilization in the present invention can be achieved only by heating a small amount of drinking water, it leads to saving of electric power and the like and simplification of piping, and the drinking water feeder can be reduced in cost and size.

DESCRIPTION OF SYMBOLS 2 Drinking water dispenser 4 Joint adapter 7 Bag part 8 Drinking water bag 9 Opening part 10 Water flow valve 12 Heater 14 Micro switch 15 Filling water sensor 16 Safety cover 17 Temperature sensor 18 Bag storage part 22 Water inlet 22a Hot water inlet 22b Cold water Water injection port 24 Heating switch 28 Cock lever 32 Water flow port 34 Connection part 35 Hole part 36 Joint pipe 37 Cord 38 Connection pipe 40 Introduction pipe 41 Heating device 42 Drinking water tank 42a Hot water tank 42b Cold water tank 43 Cooling device 44 Outlet pipe 46 Pump 48 Injection pipe 50 Flange 51 ROM
52 CPU
54 RAM
56 input 58 output 60 clock 62 input / output port D filling water detection means H heater R temperature rise control means S switch T timer

Claims (11)

At least a bag portion filled with drinking water, a water passage valve disposed at the opening of the bag portion and freely openable and closed, and a water passage opening opened at a tip of the water passage valve and through which the drinking water is led out. A drinking water bag, a bag storage part in which the drinking water bag is stored, a joint pipe detachably connected to the water flow opening at one end, and a connection part between the water flow opening and the joint pipe are shielded from the outside. A joint adapter for fixing and holding, a heater device for heating the filled water filled with the drinking water through the inside of the water flow valve and the joint pipe, and the other end of the joint pipe. A drinking water dispenser comprising at least a drinking water tank in which the drinking water is temporarily stored. The drinking water dispenser according to claim 1, wherein the heater device is disposed on the joint pipe and / or the joint adapter. The drinking water dispenser according to claim 1 or 2, further comprising a heating control means for heating the heater device. The drinking water dispenser according to any one of claims 1 to 3, further comprising a safety cover that shields an outer periphery of the joint adapter. The drinking water dispenser according to claim 4, wherein a switch for starting the heater device is provided in the safety cover, and the switch is started when the safety cover is attached. The drinking water dispenser according to claim 1, wherein a switch for starting the heater device is provided in the joint adapter, and the switch is started when the joint adapter is attached. At least a bag portion filled with drinking water, a water passage valve disposed at the opening of the bag portion and freely openable and closed, and a water passage opening opened at a tip of the water passage valve and through which the drinking water is led out. When replacing a drinking water bag, a new drinking water bag is stored in the bag storage part, one end of a joint pipe is connected to the water passage, and the connection part of the water passage and the joint pipe is externally connected by a joint adapter. It is shielded and fixed, and the inside of the water passage valve and the inside of the joint pipe are filled with the drinking water by filling it, and the inside of the water passage valve is heated by a heater device. The water sterilization method of sterilizing the inside of the joint pipe and the filled water. The water heater heat sterilization method according to claim 7, wherein the joint water and / or the joint adapter is heated by the heater device and transferred to the full water to sterilize the full water. Water supply heat sterilization method according to claim 7 or 8 wherein the filling water is heated for a predetermined heating time t _h. The water heater heat sterilization according to claim 9, wherein a safety cover is arranged around the joint adapter after the filling water is filled, and heating of the filling water is started when the safety cover is arranged. Method. The water heater heat sterilization method according to claim 9, wherein when the joint adapter is attached, the full water is filled and heating of the full water is started.