JPH0531500Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Purpose of invention] (Industrial application field) The present invention relates to a water cooler that is directly connected to the water supply.

(Prior Art) As shown in FIG. 8, a conventional water cooler directly connected to the water supply has a water fountain 2 and a drain 3 on the upper surface of the body 1 of the water cooler, and the fountain 2 has a water outlet pipe 4. It communicates with the cooling tank 5 inside the main body 1 through the cooling tank 5 .
Further, a water supply pipe 6 is connected to the cooling tank 5, and tap water is supplied to the cooling tank 5 from an external water pipe 7 through the water supply pipe 6. Furthermore, a solenoid valve 8 for water supply is inserted in the middle of this water supply pipe 6, and this solenoid valve 8 for water supply is operated in response to signals from water supply switches 11 and 12 which operate in response to operation of a push button 9 or a foot pedal 10. It opens and closes.

The water supply solenoid valves 8 are operated in response to the operation of a push button 9 or a foot pedal 10, and the water supply switches 11 and 12 are micrometers whose contacts are activated by mechanical arm operation.

(Problems to be Solved by the Invention) However, since the water supply switches 11 and 12 use micrometers whose contacts are activated by mechanically operating an arm, they have the following drawbacks.

First, since the arm of the microswitch must be operated with high precision, the microswitch must be mounted with a high degree of precision. Therefore, advanced technology is required, and the mounting structure is also complicated and expensive.

Also, the micro switch itself is not waterproof. In order to provide waterproofness, special means must be added, but this is troublesome due to the moving arm, and the structure becomes large and complicated.

This invention was made with attention to the above circumstances,
The purpose of this is to create a water cooler that can be easily and easily installed without requiring advanced technology to install the water supply switch, and also to simplify the installation structure, and to create a water cooler that can easily be made waterproof. It is about providing.

[Structure of the invention] (Means and effects for solving the problems) In order to solve the above problems, the water cooler of the invention includes a cooling tank, a water supply pipe that supplies tap water to the cooling tank, and A water supply on-off valve provided in the middle of the water supply pipe, a water supply switch that controls opening and closing of the water supply on-off valve, a water supply operating body that operates the water supply switch, and a water outlet pipe that discharges water from the cooling tank; Each water supply switch moves in conjunction with the operation of a push button installed at the top of the main body and a pedal installed at the bottom of the main body as a water supply operation body. Each magnetic slide plate is provided with a recess that penetrates and opens vertically into which the magnetic slide plate enters or retreats, and a magnet, a reed switch, and a lead wire lead-out portion are integrally molded at least inside the magnetic slide plate, and the magnetic slide plate The reed switch is configured to sense when the reed switch enters or withdraws from the recessed space and opens and closes its contacts, and each has a magnetic sensing type switch body that is fixedly attached to a mounting plate.

In this way, since a magnetic sensing type switch is used as the water supply switch, the mounting accuracy of the magnetic slide plate etc. for operating the switch does not need to be very high. Therefore, the water supply switch, magnetic slide plate, etc. can be easily and easily installed without requiring advanced technology, and the mounting structure can be simplified, and the water supply switch part can be made waterproof. can be easily achieved. More specifically, a magnetic slide plate linked to the operation of a push button and a pedal installed at the bottom of the main unit enters or retreats into a recess in the switch main body, opening and closing the switch and controlling the water supply. , the structure is simpler, and the magnetic slide plate is placed in the recessed space of the switch body, which eliminates the need for strict dimensional accuracy of parts and installation. Because there is no contact with the switch, there is no wear on the switch even after long-term use, and since the recess passes through the top and bottom, dripping dew does not accumulate as a result of the water cooler, ensuring reliability and durability. can be increased.

(Embodiment) FIGS. 1 to 7 show an embodiment of the present invention. The water cooler of this embodiment, which is directly connected to the water supply, has a water fountain 22 and a drain 23 on the upper surface of the main body 21 of the water cooler, as shown in FIG. It communicates with a cooling tank 25 inside 21. Further, a water supply pipe 26 is connected to the cooling tank 25, and tap water from an external water pipe 27 is supplied to the cooling tank 25 through this water supply pipe 26. Furthermore, a water supply solenoid valve 28 as a water supply on/off valve is inserted in the middle of this water supply pipe 26, and this water supply solenoid valve 28 can be operated by operating a push button 29 or a foot pedal 30 as a water supply operating body. The water supply switches 31 and 32 open and close in response to signals from the water supply switches 31 and 32. The push button 29 is provided near the fountain 22, and the foot pedal 30 is provided at the lower front of the main body 21.

A drain pipe 33 is connected to the bottom of the cooling tank 25, and a drain opening/closing valve 34 is inserted in the middle of the drain pipe 33. The water in the cooling tank 25 can be disposed of by opening the drain valve 34. Also,
A drain pipe 35 is connected to the drain port 23, and the water is discharged to the outside through the drain pipe 35 and further through an external drain pipe 36. The water supply pipe 26, drain pipe 33, and drain tube 35 are connected to connection caps 37, 38, and 39 provided on the back surface of the main body 21, respectively.

Further, a cooling pipe 41 is wound around the outer periphery of the cooling tank 25, and the water inside the cooling tank 25 is cooled by the cooling pipe 41.

Further, this cooling pipe 41 constitutes an evaporator of the refrigeration cycle. A compressor 42 and a condenser 43 of the refrigeration cycle are installed in the lower part of the main body 21 of the water cooler. The condenser 43 is air-cooled by a fan 44.

On the other hand, the water supply solenoid valve 28 has a pilot flam valve type pressure reduction flow sheet built therein, and this pressure reduction flow sheet maintains the flow rate within a certain range even if the water supply pressure increases. . In other words, when the water passes through this, the pressure is reduced so that the water supply pressure does not increase excessively, and the flow rate is regulated to within a certain range. In addition, the above water outlet pipe 2
4, there is a capillary tube 45 in the middle, and this capillary tube 45 connects the water outlet pipe 24.
The strength of the water jetted from the water fountain 22 is limited to a certain level. Therefore, even if the strength of tap water supplied by the pressure reduction flow sheet inside the water supply solenoid valve 28 and the capillary tube 45 changes, it is temporarily regulated by the pressure reduction flow sheet inside the water supply solenoid valve 28. In addition, the flow rate is secondarily regulated by a capillary tube 45. Therefore, even if the strength of the tap water changes, a constant amount of water will be ejected from the water fountain 22.

Further, as shown in FIG. 5, a retractable elastic tube 47 is inserted in the middle of the water outlet pipe 24 near the water fountain 22. Further, the elastic tube 47 is held down along the pedestal 48 by a holding tool 49. Then, the pedestal 48 and the presser 49
The flow rate is adjusted by changing the inner diameter of the flow path in the elastic tube 47 depending on the amount crushed by the tube. Further, the presser 49 is connected to an adjustment knob 50 that is slidable up and down, so that the presser 49 can be slid up and down together with the adjustment knob 50. moreover,
The adjustment knob 50 is guided by a tilting table 51, and when sliding the presser 49 up and down together with the adjustment knob 50, the presser 49 moves back and forth with respect to the pedestal 48 to crush or expand the elastic tube 47. The flow rate passing through this elastic tube 47 is changed. In other words, the amount of water jetted from the water fountain 22 can be adjusted using the adjustment knob 50.

On the other hand, the water supply solenoid valve 28 and the water drain on-off valve 34 are connected to a timer device 52, as shown in FIG. This timer device 52 is connected to the cooling tank 2.
5, the opening/closing operations of the water supply solenoid valve 28 and water drain on/off valve 34 are controlled.

FIG. 6 shows the configuration of the electric circuit of this water cooler. That is, 53 is a commercial AC power supply, and a first timer 54 is connected to this power supply 53. Further, a second timer 55 is connected to the power source 53 via a timer contact 54a. A pilot lamp 56 is connected in parallel to this second timer 55. Furthermore, one contact of the timer contact 55a and the water supply switch 3 are connected to the power supply 53.
Water supply solenoid valve 28 via parallel circuits 1 and 32
is connected. This water supply solenoid valve 28 is also connected to the power source 53 via a relay contact 57a. Further, a relay 57 is connected to the power source 53 via the other contact of the timer contact 55a. A draining on-off valve 34 is connected in parallel to this relay 57. Then, for the power supply 53, the timer contact 55b
A compressor drive motor 52M is connected via the operation stop switch 58. This drive motor 52M includes a compressor fan motor 4.
4M are connected in parallel.

On the other hand, as shown in FIGS. 2 to 4, the water supply switches 31 and 32 are composed of a switch body 60 that is made by integrally molding a ferrite magnet and a reed switch, and the reed switch senses the magnetism of the ferrite magnet and opens its contact point. It has the ability to open and close. The water supply switches 31 and 32 are fixedly attached to mounting plates 61 and 62, respectively. Furthermore, each water supply switch 31, 32 has a recessed portion 63, 64 formed therein, respectively. The magnetic slide plates 65 and 66 enter or retreat into the recesses 63 and 64.

Further, a magnetic slide plate 65 on the water supply switch 31 side on the push button 29 side is attached to the lower end of a rod 67 connected to the push button 29. This rod 67 passes through guide plates 68 and 69 so that it is guided in the vertical direction. Also,
Between the guide plates 68 and 69 is a coil spring 70 wound around the outer circumference of the rod 67. The upper end of this coil spring 70 is connected to a receiving plate 7 fixed to the rod 67.
1 and is pressed from below, urging the rod 67 upward. During normal standby, the rod 67 together with the magnetic slide plate 65 is in a raised position where the receiving plate 71 abuts against the upper guide plate 68. In this standby position, the magnetic slide plate 65 is located above and out of the recess 63 of the water supply switch 31. Therefore, the contact of the water supply switch 31 is open without the magnetism being interrupted.

In addition, the water supply switch 32 on the foot pedal 30 side
The magnetic slide plate 66 in the foot pedal 30
It is attached to the arm 72 of. The arm 72 is pivotally supported by a shaft 73 and is biased by a biasing spring (not shown) in a direction that raises the foot pedal 30. Normally, the arm 72 hits the receiving part 74 and is on standby as shown in FIG. are doing. During normal standby, the magnetic slide plate 67 rises together with the arm 72 and enters the recess 64 of the water supply switch 31 to cut off the magnetism and open the contacts.

Next, in the water cooler configured as described above, the cold water tank 2
Tap water supplied in advance into the tank 5 is cooled by a cooling pipe 41. And push button 29
Alternatively, when the foot pedal 30 is pressed or stepped on, the corresponding water supply switches 31 and 32 are operated, and the water supply on-off valve 28 is opened. When this water supply solenoid valve 28 opens, tap water flows into the water supply pipe 2.
6 and is supplied into the cooling tank 25. Due to this supply pressure, the water in the cooling tank 25 passes through the water outlet pipe 24 and is ejected from the water fountain 22.
Also, after this, push button 29 or foot pedal 3
When the operation of 0 is stopped, the corresponding water supply switches 31 and 32 send a closing signal to the water supply on-off valve 28, and the water supply on-off valve 28 is closed. Incidentally, excess water spouted from the water fountain 22 is discharged from the drain port 23 to the outside through the drain pipe 35.

On the other hand, as shown in the time chart of FIG. 7, during normal water supply operation, the water supply on/off valve 28 is opened by operating the water supply switches 32, 32.
At this time, the compressor 42 of the refrigeration cycle continues to operate.

Further, the inside of the cooling tank 25 is automatically and periodically cleaned. That is, it is controlled by the timer device 52. First, when the first timer 54 operates, its timer contact 54a is switched to the contact on the pilot lamp 56 side. This energizes the pilot lamp 56 for displaying stoppage, lighting up the pilot lamp 56, and at the same time as this operation, the second timer 55 operates and switches the timer contacts 55a and 55b. This opens the circuits of the water supply switches 31 and 32, and cuts off the power supply to the compressor drive motor 52M. At the same time, the water supply electromagnetic valve 28 and the water drain opening/closing valve 34 are respectively opened, and tap water is supplied to and discharged from the cooling tank 25, thereby cleaning the inside of the cooling tank 25. Then, when the cleaning is completed (according to the second timer 55), the drive motor 52M is energized, and the compressor 42
make it work. After a certain period of time (20 to 30 minutes) has passed after the compressor 42 operates, the first timer 54
The operation switches the timer contact 54a and turns off the pilot lamp 56.

Therefore, when the pilot lamp 56 for indicating a stop is turned off, the water in the cooling tank 25 has been sufficiently cooled, and the cooling water can be used immediately.

Incidentally, when the water supply switches 31 and 32 are not operated by the push button 29 or the foot pedal 30, the magnetic slide plates 65 and 66 enter into the recesses 63 and 64 to cut off the magnetism.
Then, by operating the push button 29 or the foot pedal 30, the magnetic slide plates 65, 66 are lowered and separated from the recesses 63, 64, allowing the magnetic field to pass therethrough and closing the contact of the reed switch. In this manner, each of the water supply switches 31 and 32 has the function of opening and closing its contacts by the reed switch sensing the magnetism that changes due to the movement of the magnetic slide plates 65 and 66. For this reason, each water supply switch 31, 32
Since it is not a type of switch that mechanically operates an arm to open and close contacts like a micro switch, it will operate reliably even if the mounting position is slightly shifted.

Furthermore, as shown in FIGS. 2 to 4, the water supply switches 31 and 32 have a switch main body 60 formed by integrally molding a ferrite magnet and a reed switch, so that they have good waterproof properties and have a waterproof structure. There is no particular need to provide it separately.

[Effect of idea]

As explained above, according to the present invention, since a magnetic sensing type switch is used as the water supply switch, the mounting precision of the magnetic slide plate, etc. for operating the water supply switch does not need to be very high. Therefore, the water supply switch, magnetic slide plate, etc. can be installed simply and easily without requiring advanced technology, and the structure for removing it can be simplified, and the water supply switch part can be easily installed. It is easy to make it waterproof, and from this point of view, the structure can be simplified. More specifically, a magnetic slide plate linked to the operation of a push button and a petal installed at the bottom of the main body enters or retreats into a recess in the switch main body, thereby opening and closing the switch and controlling the water supply. , the structure is simpler, and since the magnetic slide plate is placed in the recessed space of the switch body, the dimensional accuracy of parts and installation does not need to be so strict.
In addition, since there is no contact with the switch, there is no wear on the switch even after long-term use, and since the recess passes through the top and bottom, as a result of being a water cooler, there is no risk of water leaking from the gap between the buttons, or cooling water Dew that drips from the back of the cabinet due to the cooling pipes of the refrigeration cycle does not accumulate on the switch, improving reliability and durability.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a schematic structural explanatory diagram of the water cooler, Fig. 2 is a sectional view showing the structure of the water supply switch on the push button side and related parts, and Fig. 3 is a cross-sectional view showing the structure of the water supply switch on the push button side and related parts. The figure is a plan view of the part shown by arrow A in Fig. 2, Fig. 4 is a sectional view showing the configuration of the water supply switch on the foot pedal side and related parts, Fig. 5 is a side sectional view of the spout part, and Fig. 6 is An electric circuit diagram of this water cooler, FIG. 7 is a time chart for explaining the operation of this water cooler, and FIG. 8 is a schematic explanatory diagram of a conventional water cooler. 22...Fountain, 24...Water pipe, 25...
... Cooling tank, 26 ... Water supply pipe, 28 ... Solenoid valve for water supply, 29 ... Push button, 30 ... Foot pedal, 31, 32 ... Water supply switch, 60 ... Switch body, 63, 64 ... Recess , 65, 66...
...Sliding board.

Claims (1)

[Scope of utility model registration request] A cooling tank, a water supply pipe that supplies tap water to this cooling tank, a water supply on-off valve installed in the middle of this water supply pipe, a water supply switch that controls the opening and closing of this water supply on-off valve, and a water supply switch that operates this water supply switch. It is equipped with a water supply operating body, a water outlet pipe for discharging water from the cooling tank, and a spout connected to the water outlet pipe, and each water supply switch is installed on the upper part of the main body as a water supply operating body. Each magnetic slide plate moves in conjunction with the operation of the push button and the pedal installed at the bottom of the main unit, and the magnetic slide plate has a recess that penetrates vertically and opens into which the magnetic slide plate enters or retreats, and has a magnet and reed switch inside. and a lead wire lead-out portion are molded at least integrally, and when the magnetic slide plate enters or retreats into the recessed space, the reed switch senses and opens/closes its contacts, and each is attached and fixed to the mounting plate. A water cooler characterized by being equipped with a magnetically sensitive switch body.