JPH10160306A - Ice machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ice machine capable of rapidly separating a water pan from a cooler and melting the residual ice on an upper surface of the water pan, and capable of effectively preventing breakage of the water pan. SOLUTION: An ice is provided with a cooler 1 having a large number of ice making chambers open downwardly, and a water pan 5 which is located below the cooler 1 and tiltable by being turned around a turning shaft on one end, an open lower side of the ice making chambers is closed by the water pan 5 in the ice-making process, water is sprayed in each ice-making chamber, and the water pan 5 is tilted to separate the ice from each ice-making chamber in the ice-separating process. A water sprayer 13 to spray water on the upper surface of the water pan 5 in the ice separating process is provided, and a thick-walled part 61 whose upper surface is raised in a stepped manner is formed on the water pan at the outer side of the cooler 1 in the condition where the lower side of the opening of the ice making chamber is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plurality of downwardly opening ice-making chambers, in which the lower surfaces of the ice-making chambers are closed with water trays, and fountains are made there to perform ice-making. The present invention relates to a so-called inverted cell type ice making machine that performs ice.

[0002]

2. Description of the Related Art A conventional ice maker of this type is disclosed in
-265247 / F25C1 / 04, a tiltable water tray is provided below a cooler that defines a large number of ice making compartments (ice making compartments) that open downward.
In a state where the water tray closes the ice-making chamber, the circulating pump sprays ice-making water stored in the water tank from the fountain hole on the surface of the water tray into each of the ice-making chambers to perform an ice-making process, and ends the ice-making operation for a predetermined time. Thereafter, a high-temperature and high-pressure refrigerant from a compressor is flowed into the cooler to heat the water, and the deceleration motor is used to tilt the water tray to open the ice making chamber, thereby performing the ice-separation process.

Next, the structure of a conventional inverted cell type ice maker of this type will be described with reference to FIGS. 14 and 15. FIG. 1 in each figure
Reference numeral 01 denotes a water tray rotatably supported on the main body by a rotating shaft (not shown) at the left end in the figure. On the upper surface thereof, there are provided a large number of ice making chambers (see FIG. A large number of fountain holes and return holes (both not shown) corresponding to the respective fountain holes (not shown) are formed.

The water tray 101 is formed of a hard synthetic resin, and has a side wall 101A on its rotating shaft side and front and rear edges.
Are erected continuously. In the ice making process, when the water tray 101 closes the lower surface of the opening of the ice making chamber of the cooler 102 as described above, the side wall 101A of the water tray 101 is located outside the cooler 102. In addition, the cooler 10
A sprinkler 103 is provided on the left side (rotating shaft side) of the 2 above the water tray 101.

The sprinkler 103 sprays ice making water on the upper surface of the water tray 101 as shown by an arrow in the figure, and supplies water to a water tank (not shown) located below the water tray 101.
This watering is performed at the beginning of the ice-removal process. That is, in the ice making process, water generated on the water tray 101 frozen in the cooler 102 is sprinkled on the upper surface of the water tray 101 so that ice generated in the ice making chamber and the water
The reason is to promote the separation from the ice tray 01 and to melt the ice remaining on the upper surface of the tilted water tray 101.

[0006]

However, in the prior art, since the upper surface of the water tray 101 was a substantially uniform flat surface, the water flowing out of the sprinkler 103 was cooled by the cooler 102 and the water tray 10.
1 did not effectively flow to the frozen portion (the inside of the upper surface of the water tray 101), and flowed around the outer periphery (the upper surface of the water tray 101 outside the cooler 102). For this reason, at the start of the ice-removing process, the cooler 102 and the water tray 101 are not quickly separated, and a large acting force is applied to the water tray 101 from the deceleration motor.

Further, even after the water tray 101 is tilted,
Since it was difficult to sprinkle water on the residual ice on the upper surface of the ice tray 1, the ice was not effectively melted, and the cooler 1
02 and the remaining ice between the water dish 101 are bitten,
As a result, a large acting force is applied to the water tray 101, and the portion on the rotating shaft side of the water tray 101 is damaged by these forces.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and quickly removes a water tray from a cooler and melts residual ice on the upper surface of the water tray, thereby damaging the water tray. It is an object of the present invention to provide an ice making machine capable of effectively preventing the ice making.

[0009]

According to a first aspect of the present invention, there is provided an ice making machine comprising: a cooler having a plurality of downwardly opened ice making chambers; and a rotating shaft at one end located below the cooler. Equipped with a water tray that can be tilted back and forth by rotating about the center, closing the lower surface of the opening of the ice making chamber with the water tray in the ice making process,
A fountain is sprayed into each ice making room, and a water tray is tilted in the ice making process to separate ice from each ice making room.In the ice making process, a water sprinkler for sprinkling water on the upper surface of the water tray is provided. In the dish, a thick portion in which the upper surface rises stepwise is formed in a portion outside the cooler with the opening lower surface of the ice making chamber closed.

According to the present invention, in a so-called inverted cell type ice making machine, a water sprinkling device for sprinkling water on an upper surface of a water tray in a de-icing process is provided. In the outer part, the upper part has a thick part that rises in a step-like manner, so the ice making water flowing out of the sprinkler is more frozen in the cooler than the outer thick part that rises. It is easier to flow inside the upper surface of the water dish.

[0011] This makes it possible to effectively promote peeling of the water tray from the cooler at the start of the ice-removing process, and also effectively removes ice remaining on the upper surface of the water tray after the water tray is tilted. It can be sprinkled and melted away.
Therefore, the acting force applied to the water tray due to the biting of the ice at the start of the tilting of the water tray or at the end of the backward movement can be greatly reduced.

In addition, the provision of the thick portion in the portion of the water tray outside the cooler also reinforces the water tray around the pivot shaft at one end. Can be effectively prevented.

According to a second aspect of the present invention, there is provided an ice making machine comprising: a cooler having a plurality of ice making chambers which open downward; and a cooler located below the cooler and rotated about a rotation shaft at one end. Equipped with a water tray that can be tilted back and forth, the lower surface of the opening of the ice making chamber is closed by the water tray during the ice making process, and the water is fountained into each ice making room. In the deicing process, a water sprinkling device for sprinkling water on the upper surface of the water tray is provided, and the water tray has a portion outside the cooler with the lower surface of the opening of the ice making chamber closed. , A thick portion whose upper surface gradually increases toward the outside.

According to a second aspect of the present invention, in the so-called inverted cell type ice making machine, a water sprinkling device is provided for sprinkling water on the upper surface of the water tray during the deicing process, and the water tray is provided with the lower surface of the opening of the ice making chamber closed. The ice making water that flowed out of the water sprinkler was formed on the part outside the cooler, with the upper surface gradually rising toward the outside. , And flows inside the upper surface of the water tray frozen in the cooler.

[0015] This makes it possible to effectively promote the separation of the water tray from the cooler at the start of the de-icing process, and also effectively removes the ice remaining on the upper surface of the water tray after the tilting of the water tray. It can be sprinkled and melted away.
Therefore, the acting force applied to the water tray due to the biting of the ice at the start of the tilting of the water tray or at the end of the backward movement can be greatly reduced.

Further, by providing a thick portion in a portion of the water tray outside the cooler, the water tray around the rotation shaft at one end can be reinforced. Can be effectively prevented.

According to a third aspect of the present invention, there is provided an ice making machine comprising: a cooler having a plurality of ice making chambers which open downward; and a cooler positioned below the cooler and rotating about a rotating shaft at one end. Equipped with a water tray that can be tilted back and forth, the lower surface of the opening of the ice making chamber is closed by the water tray during the ice making process, and the water is fountained into each ice making room. A water sprinkling device for sprinkling water on the upper surface of the water tray during the ice releasing process, and the corner of the upper surface of the water tray has a curved shape with a predetermined curvature.

According to a third aspect of the present invention, in a so-called inverted cell type ice making machine, a water sprinkling device for sprinkling water on an upper surface of a water tray in a deicing process is provided, and a corner of the upper surface of the water tray is formed into a curved shape having a predetermined curvature. As a result, the ice making water flowing out of the sprinkler is guided into a curved shape at the corner, and flows inside the upper surface of the water tray frozen to the cooler.

This makes it possible to effectively promote the separation of the water tray from the cooler at the start of the de-icing process, and also effectively removes the ice remaining on the upper surface of the water tray after the water tray is tilted. It can be sprinkled and melted away.
Therefore, the acting force applied to the water tray due to the biting of the ice at the start of the tilting of the water tray or at the end of the backward movement can be greatly reduced.

Further, by forming the corner portion of the water dish into a curved shape having a predetermined curvature, the outer portion of the water dish becomes thicker, and the water dish around the rotation shaft at one end is reinforced. Therefore, these can effectively prevent the breakage of the water tray.

According to a fourth aspect of the present invention, in the ice making machine described above, the water sprinkler is located on the rotating shaft side of the cooler above the water dish, and the thick part or the curved shape of the water dish is at the other end. Has been deleted.

According to the fourth aspect of the present invention, in addition to the above, the water sprinkler is disposed on the rotating shaft side of the cooler above the water tray, and the thick portion or the curved shape of the water tray is formed by water. Since the ice is removed at the other end of the dish, the residual ice that has been washed away by the sprinkled ice-making water can easily flow out from the other end of the water dish, so that the damage of the water dish due to the remaining ice can be more effectively eliminated. It becomes something.

[0023]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a control device 2 of the ice making machine I of the present invention.
FIG. 2 is a side view of an ice making section of the ice making machine I in a state where the water tray 5 is in a horizontal closed position, and FIG. 3 is an ice making machine in a state where the water tray 5 is in an inclined open position. FIG. 4 is a refrigerant circuit diagram of a cooling device R of the ice making machine I, and FIG. 5 is a perspective view of the water tray 5.

Referring to FIGS. 2 and 3, the ice making machine I of the present invention is shown.
Is a so-called inverted cell type ice making machine, which has a plurality of ice making chambers 1A opened downward, and a cooler 1 in which an evaporating pipe 2 of a cooling device R is arranged on an outer surface of an upper wall; A water tray 5 that closes each ice making chamber 1A from below at a predetermined horizontal closing position and forms a fountain hole 3 and return holes 4, 4 (see FIG. 5) corresponding to each ice making chamber 1A on the upper surface; This water dish 5
And a water tank 6 communicating with the return hole 4, water in the water tank 6 is jetted from the fountain hole 3 into each ice making chamber 1A through a water supply pipe 7 and a distribution pipe (not shown) to be circulated. A circulating pump 9, a driving device 11 including a high gear ratio reduction motor 10 capable of forward and reverse rotation for tilting and returning the water tray 5, and a water tray 5 when the water supply solenoid valve 12 shown in FIG.
And a water sprinkler 13 serving as a water sprinkler for spraying water on the surface.

The water tank 6 is provided with a float type water level switch WLSW for detecting the full level of the supplied ice making water.

The mounting plate 1 fixed to the support beam 15
The first and second arms 17A and 17A extending in opposite directions are attached to the output shaft of the reduction motor 10 supported by
7B, and the driving cam 17
Coil spring 1 attached to end of first arm 17A
The other end of the water tray 8 is connected to the side of the water tray 5, and one end of the water tray 5 is rotatably supported by a rotation shaft 19.

ASW is a water tray position detection switch for detecting the horizontal closed position and the inclined open position of the water tray 5 by opening and closing the contacts. The water dish position detection switch ASW is connected to the first and second arms 1 of the drive cam 17.
When the drive cam 17 rotates counterclockwise in the figure due to the forward rotation of the deceleration motor 10, the second tray 7A and 17B come into contact with each other as shown in FIG. Arm 17B abuts on the water tray position detection switch ASW, whereby the contact of the water tray position detection switch ASW is closed and switched to the reversing side.

Further, when the drive cam 17 rotates clockwise in the drawing due to the reverse rotation of the deceleration motor 10, the first arm 17A detects the water tray position as shown in FIG. The switch ASW contacts the switch ASW, whereby the contact of the water dish position detection switch ASW is opened and switched to the tilting side.

Here, the water tray 5 is formed of a hard synthetic resin, and a side wall 5A is provided on the rotating shaft 19 side (the left side in FIGS. 2 and 3) and the front and rear edges in FIGS. 2 and 3. It is erected continuously. When the water tray 5 is in the horizontal closed position, the side wall 5A of the water tray 5 is located outside the cooler 1 at a predetermined interval.

Further, in the horizontal closed position, the cooler 1
The upper surface of the water tray 5 on the outer side is raised stepwise from the inner part where the fountain holes 3 and the like are present as shown in FIGS. 6 to 8, and a thick part 61 is formed there. ing. Note that the thick portion 61 is formed continuously only on the upper surface on the rotating shaft 19 side and the upper surface on the front and rear edges of the water tray 5, and the other end (right end) on the opposite side to the rotating shaft 19 is deleted. Have been.
That is, this portion is flush with the upper surface where the fountain holes 3 and the like corresponding to the cooler 1 exist. The sprinkler 13 is provided on the left side (rotating shaft side) of the cooler 1 and above the thick portion 61 at the left end of the water tray 5.

The components provided on the ice making unit side of the ice making machine I have been described above. On the machine room side of the ice making machine I, the compressor 21, the auxiliary condenser 41 and the condenser 21 of the cooling device R as shown in FIG. A device 42 and the like are provided. Next, the circulation of the refrigerant in the cooling device R will be described with reference to the refrigerant circuit diagram of FIG.
The high-temperature and high-pressure gas refrigerant discharged from 1 is supplied to the auxiliary condenser 4
After returning to the compressor 1 and radiating heat, it once returns to the compressor 21 and is discharged again to reach the three-way pipe 43. The refrigerant flowing out of one outlet of the three-way pipe 43 is air-cooled in the condenser 42 and condensed, and reaches the expansion valve 46 via the liquid receiver 44 and the dryer 45.

The refrigerant throttled by the expansion valve 46 flows into the evaporating pipe 2 and evaporates, and absorbs heat from the cooler 1 to cool it. And this evaporation pipe 2
Is returned to the compressor 21 via the accumulator 47. Further, the expansion valve 46 is supplied from the other outlet of the three-way valve 43.
A hot gas pipe 48 having a hot gas solenoid valve 23 interposed is connected to the outlet side of the hot gas solenoid valve 23, and a high-temperature and high-pressure gas refrigerant (hot gas) discharged from the compressor 21 with the hot gas solenoid valve 23 opened. ) Is supplied directly to the evaporation pipe 2.

The water supply electromagnetic valve 12 is provided with the above-mentioned flow control valve, and is connected to a water supply path 52 such as a water pipe at the installation site as shown in FIG.

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 constituting the cooling device R is connected in series with the relay R1, and the condenser cooling fan 22 for cooling the condenser 42 of the cooling device R is connected to the relay R2.
And are connected in series. The circulation pump 9 has a relay R
3, the hot gas solenoid valve 23 is connected in series with the relay R7, and the hot water solenoid valve 12 is connected to the relay R7.
Is connected in series with the relay R4.

The speed reduction motor 10 is connected in series with a relay R5 and a switching relay R6. The switching relay R6 closes to the contact a to rotate the deceleration motor 10 forward, and switches to the contact b to rotate the deceleration motor 10 reversely.

These relays R1 to R7 are controlled by a general-purpose microcomputer 25. The input of the microcomputer 25 includes the water tray position detection switch AS.
W and a water level switch WLSW are connected, and an ice storage switch BSW that closes a contact when a predetermined amount of ice in the ice storage (not shown) is detected is connected. The inputs of the microcomputer 25 include an ET sensor 26 for detecting the temperature of the cooler 1, a CT sensor 31 for detecting the outlet temperature of the condenser 42, and a temperature of ice making water in the water tank 6. A WT sensor 51 as a water temperature sensor, an outside air temperature sensor 60, and the like are connected.

The WT sensor 51 is provided in the lower part of the water tank 6 so as to be immersed in the water for ice making stored in the water tank 6. When a required amount of ice making water is supplied, the WT sensor 51 is used for the ice making operation. It is arranged so that it does not rise above the level of the residual water even at the end. Further, a monitor 27 is connected to an output of the microcomputer 25.

Next, the operation of the ice maker I with the above configuration will be described. It is assumed that the water tray 5 is at a horizontal closed position as shown in FIG. When the operation switch 35 is closed and the power AC is turned on, the microcomputer 25 enters a water supply process, closes the relay R4, and opens the water supply electromagnetic valve 12. When the water supply electromagnetic valve 12 is opened, water for ice making is supplied from the water supply path 52 to the water sprinkler 13.
And water is sprinkled from the sprinkler 13 onto the upper surface of the water tray 5, and is mainly supplied to the water tank 6 through the return hole 4.

When the water tank 6 becomes full and the water level switch WLSW closes the contact, the microcomputer 25 closes the water supply electromagnetic valve 12 and ends the water supply process. Next, the microcomputer 25 shifts to the ice making process,
The temperature of the ice making water in the water tank 6 detected by the T sensor 51 is read. And the temperature of the ice making water is, for example, + 3 ° C.
It is determined whether the temperature has dropped below (set temperature).

Here, in the ice making process, the refrigerant discharged from the compressor 21 is supplied to the auxiliary condenser 41 and the condenser 42 as described above.
After being condensed and liquefied by the expansion valve 46, it is supplied to the evaporation pipe 2, where it is evaporated to cool the cooler 1. The microcomputer 25 closes the relay R2 to operate the condenser cooling fan 22. Further, the microcomputer 25 closes the relay R3 and operates the circulating pump 9 to supply ice making water in the water tank 6 from the fountain hole 3. Circulate through the ice making chamber 1A.

As a result, the temperature of the ice making water in the water tank 6 decreases, and when the temperature drops to + 3 ° C. or less, the microcomputer 25 starts counting an ice making timer having the function, and starts the ice making operation. Start.

Next, the microcomputer 25 determines whether or not the ice making time has elapsed and the count of the ice making timer has ended. The ice making time set in the ice making timer is determined by the microcomputer 25 based on the output of the CT sensor 31. If the ice making time has not elapsed, the count of the ice making timer is continued.

By such an ice making operation, ice is gradually generated in the ice making chamber 1A of the cooler 1, and the water tray 5 freezes on the cooler 1. Then, when the ice making time elapses and the counting of the ice making timer is completed, the microcomputer 25 shifts to the ice removing process.

In this de-icing process, the microcomputer 25 opens the relay R2 and the relay R3, and stops the condenser cooling fan 22 and the circulation pump 9. Next, the microcomputer 25 closes the relays R5 and R7, closes the switching relay R6 to the contact a side, and sets the speed reduction motor 1
When 0 is rotated forward, the hot gas solenoid valve 23 opens to circulate the high-temperature and high-pressure gas refrigerant (hot gas) through the evaporating pipe 2. Then, the relay R4 is closed, and the water supply solenoid valve 12 is closed.
Is opened, and water for ice making is sprinkled from the sprinkler 13 onto the upper surface of the water tray 5. This sprinkling is continued until the water tray 5 reaches the inclined open position as described later.

Here, the upper surface of the water tray 5 outside the cooler 1 is a thick portion 61 rising up in a step-like manner, and the water sprinkler 13 has a thickness at the left end (the rotating shaft 19 side). Meat part 6
1, the ice making water flowing out of the sprinkler 13 first flows down onto the thick portion 61, and freezes inside the lower water tray 5, that is, the cooler 1. Flows toward the upper surface of the water tray 5 and finally the other end (right end) of the water tray 5
It will flow more out.

As described above, according to the present invention, the water spray is more likely to flow into the upper surface of the water tray 5 frozen to the cooler 1 than the rising thick portion 61 on the outer side.
The separation of the water tray 5 from the water can be effectively promoted. Therefore, the acting force applied to the water tray 5 at the start of the tilting of the water tray 5 can be greatly reduced. Then, the peeled water tray 5 is tilted by the deceleration motor 10. At this time, water sprinkles effectively flow on the ice remaining on the upper surface of the water tray 5, so that the ice can be melted and removed.

Further, since the thick portion 61 is provided in a portion of the water tray 5 outside the cooler 1, the rotating shaft 19 at one end is provided.
The water tray 5 in the peripheral portion is reinforced. Therefore,
Even if an excessive force is applied when the water tray 5 is driven, the occurrence of breakage of the water tray 5 can be effectively prevented.

In this manner, the tilting of the water tray 5 is started, and the cooler 1 is heated by the high-temperature and high-pressure gas refrigerant (hot gas), and the ice frozen in the ice making chamber 1A is released.

When the water tray 5 is tilted to a predetermined tilt opening position as shown in FIG. 3, the second arm 17B of the driving cam 17 comes into contact with the water tray position detection switch ASW and reverses to the backward movement side. The microcomputer 25 opens the relay R5, stops the deceleration motor 10, and stops the tilting of the water tray 5.

Next, the microcomputer 25 reads the temperature of the cooler 1 detected by the ET sensor 26, and determines whether or not the temperature has become equal to or higher than the deicing completion temperature, for example, + 8 ° C. Continue ice. When the ice removal is completed and the temperature of the cooler 1 becomes equal to or higher than + 8 ° C., the microcomputer 25 determines whether or not the ice storage is full with the ice storage switch BSW. Then, the switching relay R6 is closed to the contact point b, the deceleration motor 10 is reversely rotated, and the water tray 5 is moved upward.

Thereafter, when the water tray 5 returns to the predetermined horizontal closing position as shown in FIG. 2, the first arm 17A of the drive cam 17 comes into contact with the water tray position detection switch ASW and is turned to the tilting side. The microcomputer 25 opens the relays R5 and R7, closes the hot gas solenoid valve 23, stops the deceleration motor 10, and stops the water tray 5 from returning.

At this time, as described above, even when the water tray 5 is tilted, the water spray flows to the inner part thereof.
Ice remaining on the inner upper surface of the water tray 5 when peeled from the water tray is also effectively melted and removed by watering. Therefore, the acting force applied to the water tray 5 due to the ice bite at the end of the return movement of the water tray 5 is greatly reduced.

Further, since the thick portion 61 at the other end of the water tray 5 is deleted, the residual ice that has been washed away by the sprinkled ice making water is more likely to flow out from the other end of the water tray 5 and the ice is removed. Breakage of the water tray 5 due to the residual can be more effectively eliminated.

Thereafter, the microcomputer 25 returns to the water supply process, closes the relay R4, opens the water supply electromagnetic valve 12, and starts water supply to the water tank 6 in the same manner as described above. When the ice storage is full, the microcomputer 25 shifts to the ice storage process and maintains that state until the full ice is released.

Here, in the above embodiment, the thick portion 61 is formed by rising up in a stepwise manner. However, the present invention is not limited to this. The upper surface is gradually raised toward the outside of the water tray 5 as shown in FIGS. The thick part 61 may be formed so as to be as follows. With this configuration, the ice making water from the sprinkler 13 can be easily guided into the water tray 5, and the water tray 5 is similarly reinforced. In this case as well, it is assumed that the thick portion 61 on the other end side of the water tray 5 has been deleted.

As shown in FIGS. 12 and 13, the corner of the upper surface of the water tray 5 may be formed into a curved shape 62 having a curvature R2 or C2 or more. With such a configuration, the ice making water from the sprinkler 13 can be easily guided into the water tray 5, and the water tray 5 is similarly reinforced. The other end of the water tray 5 has a side wall 5.
Since there is no A, the curved shape 62 naturally does not exist.

[0057]

As described above in detail, according to the invention of claim 1, in a so-called inverted cell type ice making machine, a water sprinkling device for sprinkling water on the upper surface of a water tray in a de-icing process is provided. The ice making water that flowed out of the sprinkler was formed on the portion outside the cooler with the lower surface of the opening closed, and the upper surface of the upper portion formed a step-like shape. It becomes easier to flow inside the upper surface of the water tray frozen in the cooler than the part.

This makes it possible to effectively promote the separation of the water tray from the cooler at the start of the de-icing process, and also effectively removes the ice remaining on the upper surface of the water tray after tilting the water tray. It can be sprinkled and melted away.
Therefore, the acting force applied to the water tray due to the biting of the ice at the start of the tilting of the water tray or at the end of the backward movement can be greatly reduced.

Further, the provision of the thick portion in the portion of the water tray outside the cooler also reinforces the water tray in the vicinity of the rotating shaft at one end. Can be effectively prevented.

According to the second aspect of the present invention, in a so-called inverted cell type ice making machine, a water sprinkling device for sprinkling water on the upper surface of a water tray in a de-icing process is provided. The ice making water that flowed out of the water sprinkler was formed on the part outside the cooler, with the upper surface gradually rising toward the outside. And flow toward the inside of the upper surface of the water tray frozen in the cooler.

This makes it possible to effectively promote the separation of the water tray from the cooler at the start of the deicing process, and also to effectively remove ice remaining on the upper surface of the water tray after the water tray is tilted. It can be sprinkled and melted away.
Therefore, the acting force applied to the water tray due to the biting of the ice at the start of the tilting of the water tray or at the end of the backward movement can be greatly reduced.

Further, the provision of the thick portion in the portion of the water tray outside the cooler also reinforces the water tray in the vicinity of the rotating shaft at one end. Can be effectively prevented.

According to a third aspect of the present invention, in a so-called inverted cell type ice making machine, a water sprinkling device for sprinkling water on the upper surface of the water tray in the deicing process is provided, and the corner of the upper surface of the water tray is formed into a curved shape having a predetermined curvature. As a result, the ice making water flowing out of the sprinkler is guided into a curved shape at the corner, and flows inside the upper surface of the water tray frozen to the cooler.

As a result, the separation of the water tray from the cooler at the start of the ice-removing process can be effectively promoted, and the ice remaining on the upper surface of the water tray after tilting of the water tray can be effectively reduced. It can be sprinkled and melted away.
Therefore, the acting force applied to the water tray due to the biting of the ice at the start of the tilting of the water tray or at the end of the backward movement can be greatly reduced.

Further, by forming the corner portion of the water dish into a curved shape having a predetermined curvature, the outer portion of the water dish becomes thick, and the water dish around the rotation shaft at one end is reinforced. Therefore, these can effectively prevent the breakage of the water tray.

According to the fourth aspect of the present invention, in addition to the above, the water sprinkler is disposed on the rotating shaft side of the cooler above the water tray, and the thick portion or the curved shape of the water tray is formed by water. Since the ice is removed at the other end of the dish, the residual ice that has been washed away by the sprinkled ice-making water can easily flow out from the other end of the water dish, and damage to the water dish due to the remaining ice can be more effectively eliminated. It becomes something.

[Brief description of the drawings]

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

FIG. 2 is a side view of an ice making section of the ice making machine in a state where a water tray is at a horizontal closed position.

FIG. 3 is a side view of an ice making section of the ice making machine in a state where a water tray is at an inclined open position.

FIG. 4 is a refrigerant circuit diagram of the cooling device of the ice making machine of the present invention.

FIG. 5 is a perspective view of a water tray of the ice making machine of the present invention.

FIG. 6 is a vertical view of a water tray of the ice making machine of the present invention.

FIG. 7 is a plan view of a water tray and a cooler of the ice making machine of the present invention.

FIG. 8 is a sectional view taken along line AA of FIG. 5;

FIG. 9 is a view as viewed in the direction of arrow B in FIG. 5;

FIG. 10 is a sectional view of a water dish showing another embodiment of the present invention.

FIG. 11 is an enlarged view of the edge of the water tray of FIG. 10;

FIG. 12 is a sectional view of a water tray showing another embodiment of the present invention.

FIG. 13 is an enlarged view of the edge of the water dish of FIG. 12;

FIG. 14 is a sectional view of a water tray of a conventional inverted cell type ice making machine.

FIG. 15 is an enlarged view of the edge of the water dish of FIG. 14;

[Explanation of symbols]

 I Ice machine R Cooling device 1 Cooler 1A Ice making room 2 Evaporation pipe 5 Water tray 6 Water tank 9 Circulation pump 13 Sprinkler 19 Rotation axis 61 Thick part 62 Curved shape

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hirofumi Yanagi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (4)

[Claims] 1. A cooler having a plurality of ice-making chambers that open downward, and water positioned below the cooler and capable of tilting by rotating about a rotating shaft at one end. A dish is provided, and the lower surface of the opening of the ice making chamber is closed by the water tray in the ice making process, and water is fountained into each ice making room. In the ice removing process, the water tray is tilted to separate ice from each ice making room. In the ice making machine, a water sprinkling device for sprinkling water on the upper surface of the water tray in the ice removing process is provided, and the water tray has a portion outside the cooler in a state where an opening lower surface of the ice making chamber is closed, An ice making machine characterized in that the upper surface forms a thick portion rising up in a step-like manner. 2. A cooler having a plurality of ice-making chambers that open downward, and water positioned below the cooler and capable of tilting back and forth by rotating about a rotating shaft at one end. A dish is provided, and the lower surface of the opening of the ice making chamber is closed by the water tray in the ice making process, and water is fountained into each ice making room. In the ice removing process, the water tray is tilted to separate ice from each ice making room. In the ice making machine, a water sprinkling device for sprinkling water on the upper surface of the water tray in the ice removing process is provided, and the water tray has a portion outside the cooler in a state where an opening lower surface of the ice making chamber is closed, An ice making machine characterized in that a thick portion whose upper surface gradually increases toward the outside is formed. 3. A cooler having a plurality of ice-making chambers that open downward, and water positioned below the cooler and capable of tilting back and forth by rotating about a rotating shaft at one end. A dish is provided, and the lower surface of the opening of the ice making chamber is closed by the water tray in the ice making process, and water is fountained into each ice making room. In the ice removing process, the water tray is tilted to separate ice from each ice making room. The ice making machine according to claim 1, wherein a water sprinkling device is provided for sprinkling water on the upper surface of the water tray in the ice removing process, and a corner of the upper surface of the water tray has a curved shape with a predetermined curvature. 4. The water sprinkling device is located on the rotating shaft side of the cooler above the water tray, and the thick portion or the curved shape of the water tray is deleted at the other end. The ice making machine according to claim 1, 2 or 3.