JP2006038261A - Water storage type ice making device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a large amount of ice cubes without frequently performing water supply work to a water storage tank and without enlarging a device itself. <P>SOLUTION: An auger-type ice making machine 15 is mounted in a machine chamber 13 of the device body 11, and an internal water storage tank 16 for supplying the ice-making water to the ice making machine 15, is placed in an ice storage chamber 14 of the device body 11. A reserve tank 26 communicated and connected with the auger-type ice making machine 15 is mounted in the device body 11, and the ice-making water in the internal water storage tank 16 is supplied to the reserve tank 26 by setting a mouthpiece 30 of the internal water storage tank 16 to a connection port 28 of the reserve tank 26. A water supply circuit 33 communicated and connected with the auger-type ice making machine 15 is formed in the machine chamber 13, and an external water storage tank 32 is communicated and connected with the water supply circuit 33. By operating an electromagnetic pump PM of the water supply circuit 33, the ice-making water in the internal water storage tank 16 is supplied to the auger-type ice making machine 15. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a water storage type ice making device that can be used both as an internal water storage tank and an external water storage tank.

As a water storage type ice making device including an ice making machine that performs ice making using ice making water (water) stored in a water storage tank, for example, Patent Document 1 exists. In the apparatus disclosed in this document 1, a water storage tank capable of storing a predetermined amount of ice making water is housed in a housing in which an ice making machine for continuously producing a large number of ice blocks of a desired shape is disposed. The internal ice making water is supplied to the ice making machine via a water supply pump.
Japanese Patent Laid-Open No. 7-234051

  In the water storage type ice making device, the capacity of the water storage tank is small because a space for accommodating the water storage tank is provided inside the housing. For this reason, when manufacturing a large amount of ice blocks, the ice making water in the water storage tank is consumed in a short time, and it is necessary to frequently remove the water storage tank from the apparatus, supply water, and perform the complicated work of reattaching it. In other words, troublesome problems are pointed out. In addition, if the capacity | capacitance of a water storage tank is enlarged, the frequency | count of water supply work can be reduced, However In this case, the problem that the apparatus itself enlarges and a big installation space is needed is pointed out.

  That is, the present invention has been proposed to solve the above-described problems inherent in the conventional technology, and can produce a large amount of ice blocks while suppressing the enlargement of the device itself. It is an object of the present invention to provide a water storage type ice making device that can handle water supply operations to the water storage tank without frequently performing it.

In order to overcome the above-mentioned problems and to suitably achieve the intended purpose, a water storage type ice making device according to the present invention comprises:
In a water storage type ice making device provided with an internal water storage tank in which ice making water to be supplied to the ice making machine is stored inside an apparatus main body in which an ice making machine for producing an ice lump of a required shape is disposed,
A water supply circuit that communicates with the ice making machine is provided inside the apparatus body, and an external water storage tank that stores ice making water that is installed outside the apparatus body and is supplied to the ice making machine is stored in the water supply circuit. It is characterized in that it can be detachably connected.

  According to the water storage type ice making device according to claim 1 of the present invention, since the external water storage tank can be connected to the water supply circuit disposed inside the device main body, it is possible to increase the capacity without increasing the size of the device main body. An external water storage tank can be used, and the labor of frequently supplying water to the internal water storage tank can be saved when producing ice blocks in large quantities.

  According to the water storage type ice making device according to claim 2, when the detecting means provided in the reserve tank to which ice making water is supplied from the internal water storage tank detects the lower limit water level, the pump of the water supply circuit is operated to operate the external water storage Since the ice making water in the tank is supplied to the ice making machine, the ice making water from the internal water storage tank and the ice making water from the external water storage tank do not interfere with each other, and a large load is applied to the water circuit. Is prevented.

  According to the water storage type ice making device of the third aspect, when the cleaning liquid stored in the external water storage tank is supplied to the ice making machine and the water circuit is cleaned, the drain valve of the drain circuit is opened, so that the cleaning liquid is discharged outside the apparatus. Can do. That is, the water circuit can be washed without affecting the ice blocks produced by the ice making machine.

  Next, the water storage type ice making device according to the present invention will be described below with reference to the accompanying drawings by giving a preferred embodiment.

  FIG. 1 shows a schematic configuration of a water storage type ice making device according to an embodiment. A plurality of casters 12 are arranged at the bottom of a main body 11 of the water storage type ice making device 10, and the water storage type ice making device 10. Is configured to be movable as needed. The apparatus main body 11 is partitioned into a lower machine chamber 13 and an upper ice storage chamber 14, and an auger type ice maker (ice maker) 15 is installed in the machine chamber 13, and the ice storage chamber 14 is connected to the ice maker 15. An internal water storage tank 16 for supplying ice making water is detachably accommodated.

[About auger type ice machine]
The auger type ice making machine 15 is a well-known one, and its configuration will be described briefly. A refrigeration mechanism comprising a compressor CM (see FIG. 3), a condenser, etc. on the outer periphery of a cylindrical refrigeration casing 17. An evaporation pipe 18 communicating with (not shown) is tightly wound, and the refrigeration casing 17 is forcibly cooled by circulating a refrigerant through the evaporation pipe 18 during an ice making operation. In addition, ice making water is supplied to the refrigeration casing 17 from a reserve tank 26, which will be described later, so as to reach a set water level L, which will be described later, and the ice making operation is started and the refrigeration casing 17 is forcibly cooled. From this point, icing gradually begins to form layered thin ice.

  An auger screw 19 is rotatably inserted into the refrigeration casing 17, and the auger screw 19 is rotationally driven by a geared motor GM disposed at the lower part of the ice making machine. The auger screw 19 is formed with a cutting blade having an outer diameter slightly smaller than the inner diameter of the refrigeration casing 17 in a spiral shape. The auger screw 19 is rotated by a geared motor GM for thin ice that freezes on the inner wall surface of the casing 17. It is comprised so that it may convey upwards while scraping off with the cutting blade of this. Then, the pressing head 20 disposed on the refrigeration casing 17 and rotatably supporting the upper shaft portion of the auger screw 19 compresses the flaky ice that is scraped off by the auger screw 19 and transferred upward. The compressed ice (ice block) is discharged into the ice storage chamber 14 and stored sequentially from the bottom side.

[About the ice storage room]
The ice storage chamber 14 is formed in a box shape that opens upward, and a top plate 21 is detachably disposed at an upper end of the ice storage chamber 14 so as to close the upper opening. The inner bottom portion of the ice storage chamber 14 is provided with a required step so that the front side where an ice take-out port (not shown) is provided is lowered and the back side is raised one step further. And the upper end part of the freezing casing 17 which comprises the said auger type ice making machine 15 penetrates in the front side in the deep bottom part 14a which is one step higher in the ice storage room 14, and it is comprised so that it may face in the ice storage room 14. A drainage pipe 22 communicating with a later-described drainage tank 39 provided at the bottom of the apparatus main body 11 is provided at the front bottom part 14 b which is one step lower than the ice storage room 14, and is accumulated in the ice storage room 14. The melted water of the ice block can be discharged to the drain tank 39 through the drain pipe 22.

[Reserve tank and internal water storage tank]
A concave portion 24 is formed on the rear side of the deep bottom portion 14 a of the ice storage chamber 14, and a reserve tank 26 connected to the auger type ice making machine 15 through a water supply pipe 25 is disposed in the concave portion 24. The reserve tank 26 opens upward, and the opening is closed so as to be opened and closed by a lid member 27 provided with a first float switch (detection means) FS1 for detecting the storage amount (water level) of ice making water. It is to be made. Further, the lid member 27 is provided with a connection port portion 28 to which the internal water storage tank 16 is detachably connected, and by setting a later-described base 30 provided in the internal water storage tank 16 to the connection port portion 28, The ice making water (water) stored in the internal water storage tank 16 is configured to be able to flow into the reserve tank 26. By removing the internal water storage tank 16 and the lid member 27 from the reserve tank 26, maintenance such as cleaning of the reserve tank 26 and maintenance of the first float switch FS1 can be easily performed. In FIG. 1, reference numeral 29 denotes an overflow pipe for preventing the ice-making water stored in the reserve tank 26 from being stored exceeding the upper limit water level defined by the first float switch FS1. Is connected in communication with the drainage tank 39.

  As shown in FIG. 2, the connection port portion 28 is recessed downward from the upper surface of the lid member 27 by a predetermined height, and a pin 28a projects at a predetermined height at the center of the bottom surface. A plurality of through holes 28b are formed in the bottom surface around the pin 28a. The internal water storage tank 16 is detachably housed on the bottom side of the ice storage chamber 14, and a base 30 having a valve mechanism is detachably attached to a water supply port 16a provided on the bottom surface. It has been. The valve mechanism includes a valve body 31 that can open and close the mouth of the base 30, and when the internal water storage tank 16 is installed above the reserve tank 26 by setting the base 30 in the connection port portion 28 of the reserve tank 26. The valve body 31 is pushed up by the pin 28a of the connection port portion 28 to open the port, so that the ice making water in the internal water storage tank 16 flows into the reserve tank 26 through the through hole 28b. . When the water surface in the reserve tank 26 reaches the position of the through hole 28b in the connection port portion 28, the flow path from the internal storage tank 16 to the reserve tank 26 is blocked, and in this state, the internal storage tank 16 The pressure between the inside and the reserve tank 26 is balanced, and the inflow of ice making water is stopped. That is, in a state where ice making water remains in the internal water storage tank 16, the water surface in the reserve tank 26 always has a through hole 28 b in the connection port portion 28 that serves as an inlet for ice making water from the internal water storage tank 16 to the reserve tank 26. At the drilling level (set water level L).

[Water supply circuit]
The machine room 13 has a water supply circuit 33 for supplying ice making water (water) stored in an external water storage tank 32 different from the internal water storage tank 16 to the auger type ice making machine 15. It is disposed below the position where the reserve tank 26 is disposed. The water supply circuit 33 includes a water detection device 35 whose inlet side is connected to the external water storage tank 32 via a first connection pipe 34, and a suction port connected to the outlet side of the water detection device 35 via a second connection pipe 36. And an electromagnetic pump (pump) PM having a discharge side connected to the water supply pipe 25 via a third connection pipe 37 and operating the pump PM. The ice making water is configured to be supplied to the auger type ice making machine 15 through the first connecting pipe 34 → the water detecting device 35 → the second connecting pipe 36 → the electromagnetic pump PM → the third connecting pipe 37 and the water supply pipe 25. The At this time, the ice making water in the external water storage tank 32 is also supplied to the reserve tank 26.

  A second float switch FS2 for detecting the amount of ice-making water flowing through the inside of the device (in the embodiment, the water level in the inside) is disposed inside the water detection device 35, and the water level in the device is a preset lower limit. When the second float switch FS2 detects that the water level is below the water level (below the lower limit flow rate), the operation of the auger type ice making machine 15 is set to be stopped by an electric control circuit described later. A small hole (not shown) communicating with the outside is provided at the bottom of the flow path of the ice making water in the water detection device 35 and remains inside when the operation of the auger type ice making machine 15 is stopped. The ice making water is discharged to the outside through the small holes to prevent the ice making water from remaining unsatisfactory for a long time. Further, if ice-making water remains in the water detection device 35, the scale contained in the water adheres to the shaft of the second float switch FS2, and there is a high possibility that the float will not operate normally. The occurrence of such a situation can be suppressed by discharging the ice making water through the hole.

[External water storage tank]
The external water storage tank 32 is set to have a larger capacity than the internal water storage tank 16 and is configured to be able to store a large amount of ice making water. The external water storage tank 32 is placed on the floor on which the main body 11 of the water storage type ice making device 10 is installed. Thus, it is used in a state where it is installed below the position where the reserve tank 26 is disposed. A take-out pipe 38 having a lower end facing the vicinity of the inner bottom surface is inserted into the external water storage tank 32, and its upper end extends to the upper part of the tank. And the external water storage tank 32 is detachably connected to the water supply circuit 33 by detachably connecting the first connecting pipe 34 to the upper end of the take-out pipe 38. In the auger type ice making machine 15, when cleaning the water circuit (the portion where the ice making water circulates) (cleaning operation), the cleaning liquid is stored in the external water storage tank 32, and the cleaning liquid is distributed to the water circuit. The scale such as calcium adhered in the circuit can be removed. This cleaning liquid is produced, for example, by putting a cleaning agent having no problem in food hygiene into ice-making water (water) stored in the external water storage tank 32.

[Drain circuit]
The machine room 13 is provided with a drain circuit 40 for connecting a drain tank 39 and an auger type ice maker 15 disposed at the bottom of the apparatus body 11, and a drain solenoid valve (drain valve) is connected to the drain circuit 40. 41 is provided. The drain electromagnetic valve 41 is opened during a cleaning operation described later, and is set to discharge the cleaning liquid supplied from the external water storage tank 32 to the auger type ice making machine 15 to the drain tank 39 through the drain circuit 40. Further, a third float switch FS3 for detecting the amount (water level) of drainage stored in the tank 39 is disposed inside the drain tank 39, and when the float switch FS3 detects a preset upper limit water level. Further, the humidifier 42 described later is operated by the electric control circuit, and the wastewater stored in the drainage tank 39 is exhausted to the outside as steam. And when the 3rd float switch FS3 detects that the water level of the waste_water | drain in the waste_water | drain tank 39 fell to the preset lower limit water level, the driving | operation of the humidifier 42 is stopped by an electric control circuit. .

[About humidifier]
At the bottom of the apparatus main body 11, a humidifier 42 that is connected in communication with the drainage tank 39 for collecting various wastewater generated inside the main body 11 is disposed. The humidifier 42 has a humidifying tank 43 into which drainage flows from the drainage tank 39, a heater H for heating the drainage stored in the tank 43, and steam generated by heating the drainage through the exhaust port 44. It is basically composed of an exhaust fan EFM for discharging to the outside of the apparatus main body 11. The humidification tank 43 is connected to the drainage tank 39 so that the drainage is stored at the same water level as that in the drainage tank 39. Further, the exhaust port 44 is connected to the humidification tank 43 at one end, is opened on the outer surface side of the apparatus main body 11, and is formed so as to expand from the humidification tank 43 toward the main body surface. Steam can be exhausted.

[Electric control circuit]
FIG. 3 shows an electric control circuit of the water storage type ice making device 10, and only the main components will be described. That is, the main board 45 connected to the power supply bus and the sub board 46 driven at a low voltage are electrically separated by the transformer TR. Between the power supply line R connected to the power supply of the main board 45 and the power supply line T, the compressor CM connected in series to the normally open contact X ₂ -a of the relay X _{2 and} the normally open contact X of the relay X _{1 1} -a electromagnetic pump PM to be connected in series to the normally open contact X ₅ -a of the condenser fan CFM and relay X ₅ connected in series are connected in parallel to the. A geared motor GM and a relay X ₃ are connected between the normally open contact X ₁ -a of the relay X ₁ and the power supply line T in parallel with the condenser fan CFM.

Wherein the sub-substrate 46, with the relay X ₅ in the normally open contact X ₆ -a of the relay X ₆ are connected in series, to the relay X ₅ is a cleaning button PBS and the second float switch FS2 are connected in parallel. The second float switch FS2 closes the contact when the water level in the water detection device 35 is higher than a preset lower limit water level, and opens the contact when the water level falls below the lower limit water level. Is set. Further, the contact point of the cleaning button PBS is a manual operation automatic return contact point, and is set so that the contact point is closed when the cleaning button PBS is pressed and the contact point is opened when released. The washing button PBS is a button for performing an initial water supply operation of operating the electromagnetic pump PM and supplying ice-making water into the water detector 35 when the external water storage tank 32 is connected to the water supply circuit 33. Is also used.

Wherein in the connected ice switch SW to the ice making contact of the changeover switch SS provided on the sub-substrate 46, connected in series to the normally closed contact X ₆ -b of the normally closed contact X ₄ -b and relay X ₆ of the relay X ₄ A drain electromagnetic valve 41 is connected in series. Note that a connection point d between the normally open contact X ₆ -a relay X ₅ of the relay X _6, and the connection point e between the normally closed contact X ₆ -b and the water discharge solenoid valve 41 of the relay X ₆ Is connected. Also between the connection point g and the relay X ₄ between the normally closed contact X ₄ -b ice making switch SW and the relay X _4, upper contacts f-1a and the relay X ₄ of the first float switch FS1 normally open The lower limit contact f-2a of the first float switch FS1 connected in series to the contact X ₄ -1a is connected in parallel. The upper limit contact f-1a of the first float switch FS1 is closed when the water level in the reserve tank 26 is equal to or higher than the upper limit water level, and is opened when the water level is lower than the upper limit water level, and the lower limit contact f-2a is lower than the water level. If it is above the water level, it will be closed, and if it falls below the lower limit water level, it will be opened. The upper limit water level detected by the upper limit contact f-1a of the first float switch FS1 is set to a position lower than the set water level L.

Relay X ₆ are connected in series to the cleaning contacts of the changeover switch SS. A drain electromagnetic valve 41 is connected in series to the drain contact of the changeover switch SS.

A relay X ₁ , a geared motor GM, a relay X ₂ and a compressor CM are connected to a control board 47 disposed on the sub board 46. Further, the normally open contact X ₄ -2a of the relay X ₄ is connected to the geared motor GM, and the normally open contact X ₃ -a of the relay X ₃ is inserted between the geared motor GM and the relay X ₂ . . The relay X ₁ can be excited when the contact of the second float switch FS2 is closed, and is set to be demagnetized when the contact is opened.

4, there is shown an electrical control circuit associated with the humidifier 42, between the power supply line R and the power supply line T, is serially connected to the normally open contact X ₇ -1a relay X ₇ that the heater H, the exhaust fan EFM connected in series to the normally open contact X ₇ -2a of the relay X _7, connected in series with the delay timer TM and the relay X ₇ are serially connected to the normally closed contact X ₇ -b relay X ₇ The third float switches FS3 are connected in parallel. Between the power supply line R and the exhaust fan EFM, normally closed contact t-b of the delay timer TM in a parallel relationship with the normally open contact X ₇ -2a of the relay X ₇ is connected. The third float switch FS3 is set so that the contact is closed when the water level in the drainage tank 39 reaches the upper limit water level, and the contact is opened when the water level falls below the lower limit water level. The delay timer TM is set to open its normally closed contact tb when a preset time set by energization is counted.

(Effects of Example)
Next, the operation of the water storage type ice making device according to the above-described embodiment will be described.

[About ice making operation]
When the water storage type ice making device 10 is moved to a place where there is no water supply facility or drainage facility and the base 30 of the internal water storage tank 16 supplied with ice making water is set in the connection port portion 28 of the reserve tank 26, the pin When the valve body 31 is pushed up by 28 a, the mouth of the base 30 is opened, and the ice making water stored in the internal water storage tank 16 flows into the reserve tank 26 through the through hole 28 b of the connection port portion 28. Ice making water is also supplied from the reserve tank 26 to the auger type ice making machine 15 through the water supply pipe 25. When the water level of the ice making water in the reserve tank 26 reaches a position (set water level L) that closes the through hole 28b of the connection port portion 28 (see FIG. 2), there is a gap between the reserve tank 26 and the internal water storage tank 16. The pressure balances and the inflow of ice making water from the internal water storage tank 16 stops. In this state, both the upper limit contact f-1a and the lower limit contact f-2a of the first float switch FS1 are closed.

Here, ice-making water is also supplied from the reserve tank 26 to the water supply circuit 33 that is connected to the water supply pipe 25 and located below the reserve tank 26, and the inside of the electromagnetic pump PM and the water detection device 35. Also filled with ice making water. That is, the internal since the ice making water accumulates than the lower water level in the water detector 35, the contacts of the second float switch FS2 is closed, the relay X ₁ becomes excited state. In addition, an extraction pipe 38 of the external water storage tank 32 to which ice-making water installed outside the apparatus main body 11 is supplied is connected to the water detection apparatus 35 via a first connection pipe 34. Since no drainage is stored in the drainage tank 39, the contact of the third float switch FS3 is open.

In the state described above, in order to perform the ice making operation by the auger type ice making machine 15, when the ice making switch SW is turned on while the changeover switch SS is connected to the ice making contact, the second float switch FS2 is turned on. Since the contact is closed, the relay X ₁ is excited, the normally open contact X ₁ -a cooperating therewith is closed, and energization to the condenser fan CFM is started. Further, the relay X ₃ is excited, and the normally open contact X ₃ -a that cooperates with the relay X ₃ is closed. At this time, the upper contact f-1a of the first float switch FS1 is closed as described above, the relay X ₄ is excited, the normally open contact X ₄ -2a is closed for cooperation with this The energization of the geared motor GM is started. Further, the normally open contact X ₄ -1a cooperating with the relay X ₄ is closed, whereby the relay X ₄ is self-held through the lower limit contact f-2a of the first float switch FS1. Further, when the normally open contact X ₃ -a of the relay X ₃ is closed, the relay X ₂ is excited, and the normally open contact X ₂ -a cooperating with the relay X ₂ is closed, so that the compressor CM is connected. Energization is started. Thereby, the ice making operation in the auger type ice making machine 15 is started, and the compressed ice is sequentially stored in the ice storage chamber 14. Since the normally closed contact X ₄ -b that cooperates with the relay X ₄ is opened, the relay X ₅ is not excited and the electromagnetic pump PM does not operate.

[About the empty operation of the internal water storage tank]
When the ice making operation is continued, ice making water in the internal water storage tank 16 is consumed, and when the water level in the reserve tank 26 falls below the upper limit water level, the upper limit contact f-1a of the first float switch FS1 is opened. At this time, since the relay X ₄ is self-held through the normally open contact X ₄ -1a and the lower limit contact f-2a of the first float switch FS1, the electromagnetic pump PM is not yet energized in this state. Not.

The ice making water is further reduced in the reserve tank 26, the first float switch FS1 that drops to the lower limit level is detected, the lower contact f-2a is opened, the self-holding of the relay X ₄ is released relay X ₄ is demagnetized. As a result, the normally open contact X ₂ -2a cooperating with the relay X ₄ is opened, and the geared motor GM is stopped. Further, the normally closed contact X ₄ -b cooperating with the relay X ₄ is closed, so that the relay X ₅ can be energized. At this time, since the contact of the second float switch FS2 is closed, the energized relay X _5, energization of the electromagnetic pump PM by the normally open contact X ₅ -a cooperating therewith to close The ice making water in the external water storage tank 32 is supplied to the auger type ice making machine 15 and the reserve tank 26 through the water supply circuit 33 by the operation of the pump PM.

Ice making water from the external water storage tank 32 is supplied to the auger type ice making machine 15 and the reserve tank 26, and when the water level in the reserve tank 26 rises and exceeds the lower limit water level, the lower limit contact f-2a is closed. When the temperature further rises and reaches the upper limit water level, the upper limit contact f-1a is closed. As a result, the relay X ₄ is energized again, the normally closed contact X ₄ -b cooperating with the relay X ₄ is opened, the relay X ₅ is demagnetized, and the cooperating normally open contact X ₅ -a is opened. This stops the electromagnetic pump PM. Further, the normally open contact X ₄ -1a cooperating with the relay X ₄ is closed, and the relay X ₄ is self-held. Further, the normally open contact X ₄ -2a cooperating with the relay X ₄ is closed, the energization to the geared motor GM is resumed, and the ice making operation in the auger type ice making machine 15 is resumed.

  Then, when the water level in the reserve tank 26 falls again to the lower limit water level, the electromagnetic pump PM is operated to generate ice-making water in the external water storage tank 32, and the water level in the reserve tank 26 is the upper limit water level as described above. Then, the process of stopping the electromagnetic pump PM is repeated. That is, after the ice making water stored in the small internal water storage tank 16 is consumed, the ice making water stored in the large external water storage tank 32 is used without supplying water to the internal water storage tank 16. Thus, the ice making operation of the auger type ice making machine 15 can be continued. Therefore, even when a large amount of ice blocks are produced, it is not necessary to frequently perform the water supply operation of the small-capacity internal water storage tank 16, and the burden on the operator can be reduced. Moreover, since the apparatus main body 11 is set to a size that can accommodate the internal water storage tank 16 having a small capacity, there is no increase in installation space due to an increase in size. Furthermore, since the ice making water in the external water storage tank 32 is supplied to the auger type ice making machine 15 after the ice making water in the internal water storage tank 16 is consumed, the ice making water is supplied from both the water storage tanks 16 and 32 simultaneously. No load is added to the water circuit.

Wherein the ice making water is consumed in the external reservoir tank 32, the second float switch FS2 being arranged in the water detector 35 detects the lower limit level, the contacts open, the relay X ₁ is demagnetized The As a result, the normally open contact X ₁ -a cooperating with the relay X ₁ is opened, the condenser fan CFM is stopped, and the relay X ₃ is demagnetized. Then, the normally open contact X ₃ -a cooperating with the relay X ₃ is opened, the geared motor GM is stopped, the relay X ₂ is demagnetized, and the normally open contact X ₂ -a cooperating with this is opened. As a result, the compressor CM is stopped, and the ice making operation in the auger type ice making machine 15 is stopped.

[About humidification operation]
During the ice making operation described above, when the third float switch FS3 disposed in the drainage tank 39 detects that the drainage has been stored exceeding the upper limit water level, the relay X is closed by closing the contact point. ₇ is excited, normally open contacts X ₇ -1a and X ₇ -2a cooperating therewith are closed, and energization to the heater H and the humidifying fan EFM is started. That is, the waste water flowing into the humidification tank 43 from the drain tank 39 is heated by the heater H, and the steam generated thereby is exhausted to the outside through the exhaust port 44 by the humidification fan EFM.

The drainage tank drain in 39 lowers the water level in evaporation, the the third float switch FS3 detects the lower limit level, the relay X ₇ is deenergized the contact is open, the normally open contact X for cooperation with this ₇ -1a is opened, the energization of the heater H is stopped. The normally open contact X ₇ -2a that cooperates with the relay X ₇ is also opened, but the energization to the exhaust fan EFM is continued through the normally closed contact tb of the delay timer TM, and the heating by the heater H is stopped. After that, the steam is exhausted to the outside by the exhaust fan EFM. Further, the normally closed contact X ₇ -b cooperating with the relay X ₇ is closed, energization to the delay timer TM is started, and the timer TM counts the set time. Then, when the set time of the delay timer TM elapses, the normally closed contact t-b is opened, whereby the energization to the humidifying fan EFM is stopped and the humidifying operation is ended.

  When the amount of drainage discharged into the drainage tank 39 increases and the third float switch FS3 detects that the water level of the drainage has reached the upper limit water level, the same humidification operation as described above is performed. That is, since the wastewater accumulated in the drainage tank 39 is evaporated by the humidifier 42, it is not necessary to secure a discharge facility for discharging the wastewater, and the installation location of the water storage type ice making device 10 is limited. Absent. Further, since the drainage is not collected in the drain pan as in the prior art, it is not necessary for the operator to frequently remove the drain pan from the apparatus and discharge the drainage, and the labor of the operator can be reduced.

[About washing operation]
When the operation of the auger type ice making machine 15 is continued, impurities such as calcium contained in the ice making water are deposited as scales in the water circuit, and therefore it is necessary to periodically wash and remove them. In the water storage type ice making device 10 of the embodiment, the external water storage tank 32 storing the cleaning liquid is connected to the water supply circuit 33 during the cleaning operation of the water circuit. Then, by switching the changeover switch SS to be connected to the cleaning contact, the relay X ₆ is excited, the normally open contact X ₆ -a cooperating therewith is closed, and the drain electromagnetic valve 41 is energized. Open. When the washing button PBS is pressed in this state, the contact is closed, the relay X ₅ is excited, the normally open contact X ₅ -a cooperating with this is closed, and the energization of the electromagnetic pump PM is started. The Accordingly, the cleaning liquid stored in the external water storage tank 32 is supplied to the auger type ice making machine 15 through the water supply circuit 33, and the water circuit is cleaned. The cleaning liquid is collected in the drain tank 39 through the drain circuit 40.

Even if the contact of the second float switch FS2 is closed when the cleaning liquid from the external water storage tank 32 passes through the water detection device 35 and the contact is opened by releasing the cleaning button PBS, the second float switch relay X ₅ through the closed contacts supplied for FS2 is subsequently excited. Then, when the amount of the cleaning liquid decreases and the second float switch FS2 detects the lower limit water level and the contact is opened, the relay X ₅ is demagnetized, and the normally open contact X ₅ -a cooperating therewith is opened, When the energization of the electromagnetic pump PM is stopped, the cleaning operation is automatically stopped.

  In other words, since the water circuit is cleaned using the cleaning liquid stored in the external water storage tank 32, the cleaning operation can be performed without affecting the ice liquid stored in the ice storage chamber 14 with the cleaning liquid. Can be done. Further, since the cleaning liquid is discharged to the drain tank 39 via the drain circuit 40, the cleaning liquid supplied to the water circuit does not overflow into the ice storage chamber 14. With the top plate 21 removed from the ice storage chamber 14 and the upper opening opened, the internal water storage tank 16 is removed from the ice storage chamber 14 to clean the inside of the ice storage chamber 14 and the reserve tank 26. Is easy to do.

[About drainage operation]
When the changeover switch SS is switched to be connected to the drainage contact, the drainage electromagnetic valve 41 is energized and opened, and the ice making water remaining in the auger type ice making machine 15 is discharged to the drainage tank 39 via the drainage circuit 40. can do.

[Example of change]
In the embodiment, the internal water storage tank 16 is connected to the reserve tank 26 and the auger type ice making machine 15 is operated with the external water storage tank 32 connected to the water supply circuit 33. However, only the internal water storage tank 16 is operated. It is possible to drive even when connected. That is, as described above, by connecting the internal water storage tank 16 to the reserve tank 26, the ice making water is filled up to the inside of the water detection device 35 in the water supply circuit 33, and the contact of the second float switch FS2 is closed. Thus, since the relay X ₁ is in an exciting state, the auger type ice making machine 15 can be operated. When the ice making water in the internal water storage tank 16 is exhausted, the internal water storage tank 16 is taken out of the ice storage chamber 14 and supplied externally while the top plate 21 is removed from the ice storage chamber 14 and the upper opening is opened. Later, the ice storage chamber 14 may be accommodated again.

Further, it is possible to operate even when only the external water storage tank 32 is connected to the water supply circuit 33. In this case, the external reservoir tank 32 which stores the ice making water in Moto connected to the water supply circuit 33, the press wash button PBS When the contact is closed, the relay X ₅ is energized, cooperate with this The normally open contact X ₅ -a is closed, and energization of the electromagnetic pump PM is started. As a result, the ice making water stored in the external water storage tank 32 is supplied to the auger type ice making machine 15 and the reserve tank 26 via the water supply circuit 33, and the first float switch FS1 detects the upper limit water level and detects the upper limit water level. contact f-1a is closed, the excitation of the relay X _4, electromagnetic pump PM is stopped by the opening of the degaussing relay X ₅ and normally-open contact X ₅ -a. Thereafter, the operation is the same as that in the case of the empty operation of the internal water storage tank.

  In the embodiment, an auger type ice making machine is used as the ice making machine disposed in the apparatus main body, but various other types of ice making machines such as a jet type and a flow down type can be adopted. In addition, the pump provided in the water supply circuit and the drain valve provided in the drain circuit are not limited to the electromagnetic type of the embodiment, but may be other types as long as they operate according to the state of the corresponding switch. There may be. Furthermore, in the embodiment, a float switch is arranged in the reserve tank, the water detection device, and the drainage tank so as to detect the water level, but any means for detecting the water level is not limited to the float switch, Other types of detection means may be employed. Note that the electric control circuit shown in FIGS. 3 and 4 is an example, and the circuit configuration can be arbitrarily changed.

It is a schematic block diagram of the water storage type ice making apparatus which concerns on an Example. It is principal part sectional drawing which shows the connection part of the reserve tank and internal water storage tank which concern on an Example. It is an electrical control circuit diagram of the water storage type ice making device according to the embodiment. It is an electric control circuit diagram regarding the humidifier which concerns on an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Apparatus main body, 15 Auger type ice machine (ice machine), 16 Internal water storage tank 26 Reserve tank, 32 External water storage tank, 33 Water supply circuit, 40 Drain circuit 41 Drain solenoid valve (drain valve), FS1 1st float switch ( (Detection means)

Claims (3)

An internal water storage tank (16) for storing ice making water to be supplied to the ice making machine (15) is provided inside the apparatus main body (11) where an ice making machine (15) for producing ice blocks of a required shape is arranged. In the water storage type ice making device,
A water supply circuit (33) communicating with the ice making machine (15) is provided inside the apparatus body (11), and the water supply circuit (33) is installed outside the apparatus body (11). A water storage type ice making device characterized in that an external water storage tank (32) in which ice making water supplied to an ice making machine (15) is stored can be detachably connected. The reserve tank (26) connected to the ice making machine (15) is connected to the internal water storage tank (16) disposed above the reserve tank (26) so that ice-making water can be supplied,
The external water storage tank (32) is disposed below the reserve tank (26), and the water supply circuit (33) is provided with a pump (PM),
When the detection means (FS1) disposed in the reserve tank (26) detects that the water level in the reserve tank (26) has dropped to the lower limit water level, the pump (PM) is operated to operate the external water storage The water storage type ice making device according to claim 1, wherein ice making water in the tank (32) is supplied to an ice making machine (15). A drainage circuit (40) having a drainage valve (41) is connected to the ice maker (15), and the pump (PM) is operated to store the cleaning liquid stored in the external water storage tank (32). The water storage system according to claim 2, wherein when supplying to 15), the drainage valve (41) is opened and the cleaning liquid supplied to the ice making machine (15) is discharged through the drainage circuit (40). Ice making equipment.

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