JPH06229655A - Ice making machine - Google Patents

Abstract

PURPOSE:To smoothly perform the first time purifying process, and also to reliably prevent inundation in an ice making machine caused by spraying of water in a reverse cell-type ice making machine. CONSTITUTION:When it is judged that a water tray is in the horizontal blockage position or in the halfway of tilting motion, the water tray is once tilted and moved to stay in the tilted opening position and then returned and moved again to stay in the horizontal blockage position. After that, a microcomputer 25 in a controller 20 drives a circulation pump 9 on the basis of the state of a water tray position detecting switch ASW, after the power source is turned on.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called reverse cell type ice making machine.

[0002]

2. Description of the Related Art Conventionally, this type of ice making machine is disclosed in, for example, Japanese Patent Laid-Open No.
As shown in Japanese Patent No. 129275 (F25C1 / 04), a tiltable water tray is provided below a cooler that defines a large number of downwardly opening ice making compartments, and the water tray closes the ice making compartment. At the horizontal closed position, water is sprayed from the fountain holes formed on the surface of the water tray to each ice making chamber to perform the ice making process, and at the inclined open position where the water tray opens the ice making chamber, the high temperature high pressure refrigerant from the compressor is supplied to the cooler. It is configured to perform a deicing process by sinking and heating. The tilting movement of the water tray is realized by a drive motor capable of forward and reverse rotation. However, in order to stop the drive motor when the water tray reaches a predetermined tilt open position and horizontal closed position, the water tray of the water tray is moved. A changeover switch that is reversed by movement is provided.

Further, in the above-mentioned publication, a short ice making process is executed immediately after the power is turned on in order to remove dust and water stains accumulated or adhered to the circulation water passage which goes around the fountain hole-ice making chamber-return hole-water tank. By circulating water from the fountain hole to the ice making chamber by the circulation pump, the cleaning process in the circulation water channel is automatically performed the first time after the power is turned on. By the way, the state of the water tray when the power is turned on to the ice maker is not constant. Therefore, if the first washing process is performed in a state where the water tray is inclined, there is a risk that the water sprayed from the fountain hole will drop into the ice storage below.

Therefore, in the above publication, the state of the water tray is judged from the state of the changeover switch to solve this. That is, when the changeover switch is on the return side, the water tray is in the tilt open position or is in the process of returning, so in the above publication, the changeover switch is on the return side when the power is turned on. If it is on the return side, the water tray is moved back once and the changeover switch is inverted to the tilt side, and then the cleaning is performed.

[0005]

However, in the above publication, when the changeover switch is on the tilting side when the power is turned on, the circulation pump is operated as it is to start the fountain, and the water tray is horizontally closed by the subsequent water supply time. Since it was judged that it was not in the position, it was not possible to achieve reliable cleaning of the circulating water channel, and there was the problem that the water sprayed in the ice storage dropped during the judgment of the water supply time and the inside of the ice maker was flooded. there were.

Further, if the compressor is immediately energized at the moment of a momentary power failure such as when the outlet of the ice making machine is accidentally unplugged and then turned on again, an excessive load is applied to the compressor due to the pressure difference in the refrigerant circuit. Therefore, in order to cause a start-up failure such as a failure to start up, conventionally, a special timer is provided to prohibit restarting for a certain period of time, resulting in an increase in the number of parts and a complicated program under computer control.

The present invention has been made in order to solve the problems of the prior art, and in a so-called reverse cell type ice making machine, the first washing step is smoothly performed, and water in the ice making machine is surely inundated by a fountain. The purpose is to prevent. Another object of the present invention is to prevent a start-up failure of the compressor when the power is turned on in a so-called reverse cell type ice making machine that performs a first washing process without complicating the configuration.

[0008]

An ice making machine I according to a first aspect of the present invention is capable of tilting and retracting a cooler 1 having a plurality of downwardly opening ice making chambers 1A defined therein and closing each ice making chamber 1A. A water tray 5 is provided, and water is sprayed from the fountain holes 3 formed on the surface of the water tray 5 to each ice making chamber 1A by the circulation pump 9 to perform the ice making process, and the cooler 1 is heated to perform the ice removing process, The circulating pump 9 is operated after the power is turned on to perform the first washing process of the circulating water channel. The driving device for tilting the water tray 5 and the water tray 5 are reversed by the movement of the water tray 5. And a controller 20 for controlling the drive unit and the circulation pump 9 based on the reversing operation of the water tray position detection switch ASW. Control device 20 after power-on When it is determined that the water tray 5 is in the horizontal closed position or in the middle of tilting based on the state of the water tray position detection switch ASW, the water tray 5 is once tilted to the tilt open position and then returned again. The circulation pump 9 is operated after the horizontal closing position.

The ice making machine I according to the second aspect of the present invention is a cooler 1 in which a large number of downwardly opening ice making chambers 1A are defined.
And a compressor 21 for supplying a refrigerant to this cooler 1 and a tiltable water tray 5 for closing each ice making chamber 1A, and the high temperature refrigerant discharged from the compressor 21 is condensed and decompressed. The ice making process of supplying water to the cooler 1 and spraying water from the fountain holes 3 formed on the surface of the water tray to each ice making chamber 1A by the circulation pump 9 and the high temperature refrigerant discharged from the compressor 21 are made to flow to the cooler 1. The control device 20 is provided with a drive device for tilting the water tray 5 and a control device 20 for controlling the drive device and the circulation pump 9 for performing a deicing step of heating.
Is characterized in that after the power is turned on, the circulation pump 9 is operated to perform the first washing step of washing the circulating water channel, and the compressor 21 is stopped for the entire period of the first washing step or a predetermined period from the start of the first washing step. And

Further, the ice making machine I of the third aspect of the invention is a cooler 1 in which a large number of downwardly opening ice making chambers 1A are defined.
And a compressor 21 for supplying a refrigerant to this cooler 1 and a tiltable water tray 5 for closing each ice making chamber 1A, and the high temperature refrigerant discharged from the compressor 21 is condensed and decompressed. , The fountain hole 3 formed on the surface of the water tray 5 while being supplied to the cooler 1.
From the circulation pump 9, the ice making process of spraying water into each ice making chamber 1A and the valve (hot gas solenoid valve) 23 are opened, and the compressor 2
A high temperature refrigerant discharged from the cooling device 1 is caused to flow into the cooler 1 for heating, and a deicing process is performed. The driving device tilts and moves the water tray 5, the driving device, the circulation pump 9 and the valve (hot The control device 20 controls the gas solenoid valve) 23. The control device 20 operates the circulation pump 9 after the power is turned on to perform the first cleaning step of cleaning the circulating water channel, and
It is characterized in that the compressor 21 is stopped for the entire period of the first cleaning process or a predetermined period from the start of the first cleaning process, and the valve (hot gas solenoid valve) 23 is opened before the compressor 21 is operated. .

[0011]

The water tray position detection switch ASW repeats the reversing operation to the tilting side or the returning side according to the movement of the water tray 5, and the water tray 5 is in the horizontal closed position or in the middle of tilting. Only in this case, the water tray position detection switch ASW is on the tilt side. According to the ice making machine I of the invention of claim 1, the water tray position detection switch ASW is determined by the state of the water tray position detection switch ASW related to the initial washing process after the power is turned on.
Is on the tilting side and is in the horizontal closing position or in the middle of tilting, the water tray 5 is once tilted to the tilting open position, then returned to the horizontal closing position and then circulated. Since the pump 9 is operated, water can be sprayed in a state where the water tray 5 is surely in the horizontal closed position, the circulation channel can be smoothly washed, and the water in the ice maker I can be reliably prevented. be able to.

Further, according to the ice making machine I of the second aspect of the present invention, the compressor 21 is stopped for the entire period of the first washing process or for a predetermined period from the start of the first washing process. It is possible to avoid the start-up failure of the compressor 21 when the power is turned on without providing a special timer such as a function. Furthermore,
According to the ice making machine I of the invention of claim 3, in addition to the above, the valve (hot gas solenoid valve) 23 for supplying the high temperature refrigerant to the cooler 1 is opened before the compressor 21 is operated. The pressure in the refrigerant circuit before the start-up of the machine 21 is quickly balanced, and the start-up failure can be more surely prevented.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is an electric circuit diagram of a control device 20 of the ice making machine I of the present invention, and FIG. 2 is a partially cutaway side view of the ice making machine I. Ice machine I
Is a so-called reverse cell type ice making machine, which has a large number of downwardly opening ice making chambers 1A, a cooler 1 in which an evaporation pipe 2 of a cooling device is arranged on an outer surface of an upper wall, and a predetermined horizontal At the closing position, each ice making chamber 1A is closed from below with a sufficient margin, and a water tray 5 having a fountain hole 3 and a return hole 4 corresponding to each ice making chamber 1A on the surface and a water tray 5 fixed to the water tray 5 are provided. A water tank 6 communicating with the hole 4, a circulation pump 9 for ejecting the water in the water tank 6 from the fountain hole 3 through the water supply pipe 7 and the distribution pipe 8, and circulating the water to each ice making chamber 1A, and the water tray 5. A drive unit 11 including a deceleration motor 10 having a high gear ratio capable of tilting and reciprocating rotations, a sprinkler 13 that sprinkles water on the surface of the water tray 5 when the water supply solenoid valve 12 is opened, and the bottom of the water tank 6. In the float tank 14A communicating with the
The water level switch WLSW is activated by B, and the water tank 6
The water level detection device 14 and the like for detecting the predetermined full water level.

Then, the mounting plate 1 fixed to the supporting beam 15
An output shaft of the reduction motor 10 supported by the first and second arms 17 </ b> A and 1 </ b> A extending in mutually opposite directions.
7B is connected to the drive cam 17, and the coil spring 18 is attached to the end of the first arm 17A of the drive cam 17.
The other end of the water tray 5 is connected to the side portion of the water tray 5, and the rear portion of the water tray 5 is supported by the rotating shaft 19.

The ASW is a water tray position detecting switch for detecting the horizontal closed position and the tilt open position of the water tray 5 by opening and closing the contacts. The water dish position detection switch ASW is used for the first and second arms 1 of the drive cam 17.
7A and 17B are in contact with each other, and when the drive cam 17 rotates counterclockwise in FIG. 2 due to the normal rotation of the reduction motor 10, the second arm 17B is placed at the position where the water tray 5 is in the tilt open position. Is a water tray position detection switch ASW
The contact of the water tray position detection switch ASW is closed and switched back to the backward movement side.

When the drive cam 17 rotates clockwise in FIG. 2 due to the reverse rotation of the deceleration motor 10, the first arm 17A functions as a water tray position detection switch ASW when the water tray 5 reaches the horizontal closed position. The contact of the water tray position detection switch ASW is opened by this contact, and is switched and inverted to the tilting side. Next, in the control device 20 of FIG. 1, the following circuits are connected to the power supply AC via the operation switch 35. That is, the compressor 21 that constitutes the cooling device is connected in series with the relay R1, and the condenser cooling fan 22 that cools the condenser (not shown) of the cooling device is the relay R2.
Are connected in series. The circulation pump 9 is a relay R
3, a hot gas solenoid valve 23 for controlling the supply of hot gas (high-temperature high-pressure gas refrigerant) to the evaporation pipe 2 of the cooler 1 is connected in series with the relay R7, and the water supply solenoid The valve 12 is connected in series with the relay R4. The deceleration motor 10 is connected in series with a relay R5 and a switching relay R6. This switching relay R6 has a contact a
The speed reduction motor 10 is normally rotated by closing the switch to the contact side and is switched to the contact b side to rotate the speed reduction motor 10 in the reverse direction.

These relays R1 to R7 are controlled by a general-purpose microcomputer 25. The water level switch WLSW and the water tray position detection switch ASW are connected to the input of the microcomputer 25, and
An ice storage switch BSW that closes the contacts when a predetermined full ice amount in an ice storage (not shown) located below is detected is connected. In addition, for the input of the microcomputer 25,
A sensor 26 for detecting the temperature of the cooler 1 and a sensor 31 for detecting the temperature of the condenser are connected, and a monitor 27 is connected to the output of the microcomputer 25.

Next, the operation of the ice making machine I of the present invention will be described based on the flowcharts showing the program of the microcomputer 25 of FIGS. 3 and 4 and the operation process charts of the ice making machine I shown in FIGS. . After installing the ice maker I, or because it has not been used for a long time, or due to an instantaneous power failure, the power supply AC
After the power is cut off, the operation switch 35 is closed again and the ice making machine I
It is assumed that the power is turned on (ON). At this time water tray 5
The position of is not determined, and is the horizontal closed position, or the inclined open position, or the inclined state in the middle,
The tilted state may be in the middle of tilting or in the middle of returning.

However, such a state can be discriminated into two kinds by the open / closed state of the contact of the water tray position detecting switch ASW. That is, when the contact of the water tray position detection switch ASW is open and is on the tilt side, the water tray 5 is in the horizontal closed position or in the middle of tilting, and the contact of the water tray position detection switch ASW is closed and is on the return side. At one time, the water tray 5 is in the inclined open position or in the middle of returning.

Therefore, when the operation switch 35 is closed and the power supply AC is turned on (ON), the microcomputer 25 determines the state of the water tray position detection switch ASW in step S1, and the contact is open to the tilting side. If there is (Fig. 5
Situation. The water tray 5 is in the horizontal closed position or in the middle of tilting),
In step S2, the relay R5 is closed and the switching relay R
6 is closed to the contact a side, the deceleration motor 10 is normally rotated, and the water tray 5 is tilted. Then, in step S4, the state of the water tray position detection switch ASW is discriminated again, and if it is still on the tilt side, the process returns to step S2 to continue tilting. The water tray 5 comes to the predetermined tilt open position, and the water tray position detection switch AS
When the contact point of W is closed and reversed to the return side, the microcomputer 25 proceeds from step S4 to step S5 and this time closes the switching relay R6 to the contact point b side, and the deceleration motor 10
Reverse and start the return movement of the water tray 5.

Next, in step S6, the microcomputer 25 determines whether or not it is 15 seconds before the water tray 5 is completely closed (horizontal closed position). If not, the process proceeds to step S9 and the water tray position detection switch is restarted. The state of the ASW is judged, and if it is still on the backward movement side, the procedure returns to step S5 to continue the backward movement. Then, 15 seconds before, the process proceeds from step S6 to step S7 and the water tank 6 is turned on by the water level switch WLSW.
It is determined whether or not the water level has reached a predetermined full water level, and if not, the process proceeds to step S8 to close the relay R4 and open the water supply solenoid valve 12 (ON). When the water supply solenoid valve 12 is opened, water is sprayed from the sprinkler 13 onto the surface of the water tray 5, and is mainly supplied to the water tank 6 through the return hole 4.

Thereafter, the water tray 5 is moved to the horizontal closing position (see FIG. 2).
When the contact of the water tray position detection switch ASW is opened and inverted to the tilting side, the microcomputer 25 returns from step S9 to step S6, and the return movement of the water tray 5 is stopped. . On the other hand, when the power tray AC is turned on (ON), the contact of the water tray position detection switch ASW is closed and is on the backward movement side (state of FIG. 5).
When the water tray 5 is in the inclined open position or in the backward movement), the microcomputer 25 proceeds from step S1 to step S3 to close the relay R5, close the switching relay R6 to the contact b side, and reverse the deceleration motor 10 to rotate the water. Move the dish 5 back. After that, the process proceeds to step S6, and thereafter step S9 as described above.
Then, the backward movement is continued until the water tray position detection switch ASW is reversed to the tilting side, and the water tray 5 is similarly stopped at the horizontal closed position.

In this way, the microcomputer 25 determines the state of the water tray 5 according to the open / closed state of the contact of the water tray position detection switch ASW when the power is turned on (ON), and the water tray 5
If it is judged that the horizontal closing position or the tilting is in progress, the water tray 5
Is temporarily tilted and then returned to a predetermined horizontal closing position, and when it is judged that the water tray 5 is in the tilt open position or in the middle of returning, the water tray 5 is moved back to the horizontal closing position. Position. In any case, according to the ice making machine I of the present invention, after the power is turned on, the water tray 5 is always initialized to the horizontal closed position.

After that, when the water tank 6 becomes full, the process proceeds from step S7 to step S10 in FIG.
4 is opened, the water supply solenoid valve 12 is stopped (OFF), and the state of the water tray position detection switch ASW is determined in step S11. Here, assuming that the water tray 5 has already been returned to the horizontal closed position and the water tray position detection switch ASW is on the tilting side, the microcomputer 25 causes the microcomputer 25 to perform step S12.
Then, the relay R3 and the relay R7 are closed, the circulation pump 9 is operated (ON), and the hot gas solenoid valve 23 is opened (ON).

When the circulation pump 9 is operated, the water in the water tank 6 is sprayed from the fountain hole 3 into the ice making chamber 1A, and is circulated in the route from the return hole 4 back to the water tank 6. As a result, dust and water stains accumulated or attached in the circulating water passage are washed, and the dust clogging the fountain hole 3 is also removed. Next, the microcomputer 25 determines in step S13 whether or not the count of the timer having the function is 30 seconds, and if not, the process returns to step S12 to continue the cleaning. In this way, the ice maker I executes the first washing step after turning on the power source to wash the inside of the circulating water channel.
Is surely set to the horizontal closed position, so that the inconvenience that water is sprayed from the fountain hole 3 in a state where the water tray 5 is inclined can be reliably prevented. Therefore, the lower ice storage was flooded and created,
Alternatively, it is possible to prevent the inconvenience that the ice generated thereafter is damaged.

After the cleaning is performed for 30 seconds, the microcomputer 25 executes steps S13 to S14.
Then, the relay R1 is closed, the compressor 21 is started, and at the same time, the ice removal process below is performed. That is, the ice maker I does not activate the compressor 21 during the first washing process after the power is turned on. Here, when the power is immediately turned on after the momentary power failure and the compressor 21 is operated at the same time, the pressure difference between the high pressure side and the low pressure side in the refrigerant circuit of the cooling device is large, and a large load is applied to the startup of the compressor 21. . Therefore, in the state where the pressure difference is large, there is a risk that startup failure such as inability to start the compressor 21 may occur, but in the present invention, the compressor 21 is not started during the first cleaning step after power-on. Therefore, the high / low pressure difference in the refrigerant circuit is alleviated during that time, and therefore the above-described start-up failure is prevented.

In particular, the forced stop period of the compressor 21 is ensured by the operating time of the water tray 5 and the timer for setting the period (30 seconds) for cleaning, so that a special motor timer or a micro as in the conventional case is used. The program of the computer 25 is unnecessary, and the configuration of the control device 20 of the ice making machine I can be simplified. In addition, during the 30 seconds in which the cleaning is performed before the compressor 21 is started, the microcomputer 25 opens the hot gas solenoid valve 23, so that the pressure equilibrium in the refrigerant circuit is performed more quickly. The start-up failure of the compressor 21 can be prevented more reliably.

Then, in the ice removing process, the microcomputer 25 opens the relays R2 and R3, stops the condenser cooling fan 22 and the circulation pump 9, and relays R5.
The relay R7 is closed, the switching relay R6 is closed to the contact a side, the deceleration motor 10 is normally rotated, and the water tray 5 is tilted. Further, since the hot gas solenoid valve 23 is opened, the hot gas discharged from the compressor 21 is circulated through the evaporation pipe 2 to heat the cooler 1.

When the water tray 5 tilts to a predetermined tilt open position (fully opened) as shown by the broken line in FIG. 2, the drive cam 1
2nd arm 17B of 7 is a water tray position detection switch ASW
Then, the microcomputer 25 opens the relay R5 and stops the deceleration motor 10 to stop the tilting of the water tray 5. When the water tray 5 is at the inclined open position, the circulating water in the water tank 6 is drained to a drainage section (not shown) located immediately below the water tank 6. Then, the temperature of the cooler 1 taken in by the sensor 26 is, for example, +
It is determined whether the temperature is higher than the ice removal completion temperature such as 9 ° C., and if it is higher, the relay R5 is closed, the switching relay R6 is closed to the contact b to reverse the deceleration motor 10, and the water tray 5 is moved upward. I will move it back.

When the water tray 5 is returned to a predetermined horizontal closed position (fully closed) as shown by the solid line in FIG. 2 by such a return movement, the first arm 17A of the drive cam 17 contacts the water tray position detection switch ASW. The microcomputer 25 opens the relays R5 and R7, closes the hot gas solenoid valve 23, and stops the deceleration motor 10 to stop the return movement of the water tray 5 because the tilting side is reversed. Then, the microcomputer 25 proceeds to step S15 and relay R
1 is closed, and the compressor 21 is operated to shift to the following ice making process. Note that the microcomputer 25 closes the relay R4 and opens the water supply solenoid valve 12 15 seconds before the water tray 5 is completely closed, and starts water supply to the water tank 6 as described above.

In the ice making process, the hot gas refrigerant discharged from the compressor 21 is condensed and liquefied by the condenser and decompressed by a decompression device such as a capillary tube (not shown),
It is supplied to the evaporation pipe 2 where it evaporates and cools the cooler 1. Further, the microcomputer 25 has a relay R
2 and the relay R4 are closed to supply water, the condenser cooling fan 22 is operated, the relay R3 is closed after a delay of 10 to 30 seconds, and the circulation pump 9 is operated to spray the water in the water tank 6. The ice making operation is started by circulating the holes 3 into the ice making chambers 1A.

Thereafter, the microcomputer 25 determines whether the water level switch WLSW is closed, a predetermined amount of water is supplied to the water tank 6, and the water level switch WLSW detects a predetermined full water level and closes the relay R4. The water supply solenoid valve 12 is opened and the water supply is stopped. Further, the microcomputer 25 uses the sensor 26 to cool the cooler 1
When the temperature reaches, for example, 0 ° C., the microcomputer 25 starts the integration of the ice making timer having the function.

By the ice making operation, the ice making chamber 1 of the cooler 1
When ice is gradually generated in A and the integrated value of the ice making timer is timed up, the microcomputer 25 proceeds to step S16 to open the relay R2 and the relay R3 to open the condenser cooling fan 22 and the circulation pump 9 To stop. Next, the relays R5 and R7 are closed, and
The switching relay R6 is closed to the contact a side, the deceleration motor 10 is rotated in the normal direction, the tilting of the water tray 5 is started, and the hot gas solenoid valve 23 is opened to circulate the hot gas in the evaporation pipe 2 to cool the cooler 1. Is heated and the frozen ice in the ice making chamber 1A is transferred to the ice removing step.

This ice removing process is executed in the same manner as described above. Then, during this ice removal process, the microcomputer 25 determines whether or not the ice storage switch BSW is closed. If a predetermined amount of ice is stored in the ice storage (not shown), the microcomputer 25 proceeds to step S17 and relays R1 and relays. R7 is opened, the operation of the compressor 21 is stopped, and the ice storage process is started. After that, the ice in the ice storage decreases and the ice storage switch BSW
Is maintained until it is closed, and when the ice storage switch BSW is closed, the ice making process is executed again.

In the embodiment, the compressor 21 is stopped for the entire period of the first cleaning stroke, but the invention is not limited to this. Even if the compressor 21 is stopped for a predetermined period from the start of the first cleaning stroke and started before the end, The effect of preventing defective starting of the compressor is exhibited. Further, the various times shown in the embodiments are not limited thereto, and may be set as appropriate according to the capacity and capacity of the ice making machine I.

[0036]

As described in detail above, according to the invention of claim 1, it is determined that the water tray is in the horizontal closed position or in the middle of tilting depending on the state of the water tray position detection switch in the first washing process after the power is turned on. In this case, once the water tray is tilted to the tilt open position and then returned again to the horizontal closed position, the circulation pump is operated, so that the water tray must be securely in the horizontal closed position. The water can be sprayed, the inside of the circulating water channel can be smoothly washed, and the water in the ice making machine can be reliably prevented.

Further, according to the invention of claim 2, since the compressor is stopped for the entire period of the initial cleaning process or for a predetermined period from the start of the initial cleaning process, compression of a timer function by a motor timer or a computer program is performed. Without providing a special timer for stopping the machine, it is possible to avoid the start-up failure of the compressor when the power is turned on, and to simplify the configuration of the control device of the ice making machine.

Further, according to the invention of claim 3, in addition to the above, the valve for supplying the high temperature refrigerant to the cooler is opened before the compressor is operated, so that in the refrigerant circuit before the start of the compressor. The pressure equilibrium is rapidly performed, and the start-up failure of the compressor can be more surely prevented.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram of a control device for an ice making machine according to the present invention.

FIG. 2 is a partially cutaway side view of the ice making machine.

FIG. 3 is a flowchart showing a program of a microcomputer.

FIG. 4 is a flowchart showing a program of a microcomputer.

FIG. 5 is an operation process diagram of the ice maker.

FIG. 6 is likewise an operation process chart of the ice making machine.

FIG. 7 is also an operation process chart of the ice maker.

[Explanation of symbols]

 ASW Water tray position detection switch I Ice maker 1 Cooler 1A Ice maker 2 Evaporation pipe 3 Fountain hole 5 Water tray 9 Circulation pump 10 Deceleration motor 20 Controller 23 Hot gas solenoid valve 25 Microcomputer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Minoru Okajima 2-18 Keihan Hondori, Moriguchi City, Osaka Prefecture Sanyo Electric Co., Ltd. (72) Inventor Yoshiharu Abe 2-Chome Keihan Hondori, Moriguchi City, Osaka Sanyo Denki Incorporated (72) Inventor Tsuyoshi Kurosawa 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (3)

[Claims] 1. A circulation pump provided with a cooler in which a large number of downwardly opening ice making chambers are defined and formed, and a tiltable water tray for closing each ice making chamber, and a fountain hole formed in the surface of the water tray. By performing a ice making process by spraying water into each ice making chamber, heating the cooler to perform an ice removing process, and by operating the circulation pump after turning on the power, an ice making machine that performs a first washing process of the circulating water channel. , A drive device for tilting and moving the water tray, a water tray position detection switch which is reversed by the movement of the water tray and detects a predetermined tilt open position and horizontal closed position of the water tray, and the water tray position detection A controller for controlling the drive unit and the circulation pump based on a reversing operation of the switch, and the controller controls the horizontal position of the water tray based on the state of the water tray position detection switch after the power is turned on. Blocked position or tilt If it is determined that the water tray is in the middle of movement, the water tray is once tilted to the tilt open position,
The ice-making machine, wherein the circulation pump is operated after returning to the horizontal closed position again. 2. A cooler in which a large number of downwardly opening ice making chambers are defined, and a compressor for supplying a refrigerant to the cooler,
A water tray capable of tilting back and forth that closes each of the ice making chambers, condenses and decompresses the high temperature refrigerant discharged from the compressor, and supplies the water to the cooler and the fountain formed on the surface of the water tray. In an ice making machine that performs an ice making process of spraying water from a hole into each ice making chamber by a circulation pump and an ice making process of flowing high temperature refrigerant discharged from the compressor to the cooler to heat the ice making machine, the water tray is tilted. And a control device for controlling the circulation pump. The control device operates the circulation pump after the power is turned on and performs a first cleaning step of cleaning the circulating water channel. An ice-making machine characterized in that the compressor is stopped for the entire period of the initial cleaning step or for a predetermined period from the start of the initial cleaning step. 3. A cooler having a plurality of downwardly opening ice making chambers defined therein, and a compressor for supplying a refrigerant to the cooler.
A water tray capable of tilting back and forth that closes each of the ice making chambers, condenses and decompresses the high temperature refrigerant discharged from the compressor, and supplies the water to the cooler and the fountain formed on the surface of the water tray. In an ice-making machine that performs an ice-making process in which water is sprayed from a hole into each ice-making chamber by a circulation pump, a valve is opened, and a high-temperature refrigerant discharged from the compressor is caused to flow into the cooler to heat the ice-making machine, It is provided with a drive device for tilting and moving the dish and a control device for controlling the drive device, the circulation pump and the valve, and the control device operates the circulation pump after the power is turned on to wash the circulation water passage. Performing the initial cleaning step, stopping the compressor for the entire period of the initial cleaning step, or for a predetermined period from the start of the initial cleaning step, and opening the valve before operating the compressor. A characteristic ice machine.