JPH01312372A - Control of deicing operation of automatic ice making machine - Google Patents

Abstract

PURPOSE:To enable lumps of ice to drop smoothly from first and second ice making chambers into an ice storage by such a control as not to circulate a refrigerant or a hot gas to an evaporator provided for the first ice making chamber while the second ice making chamber is heated by a heating means. CONSTITUTION:When ice making in first small ice making chambers 13 and second small ice making chambers 15 is finished, energization of a heater H is started to heat a second ice making chamber 12. When the temperature of the second ice making chamber 12 reaches or exceeds a predetermined value, the condition is detected by a temperature-detecting thermostat, whereby a compressor is restarted operating, the energization of the heater H is stopped, and an actuator motor AM is driven to forcibly release the ice making chamber 12 from the first ice making chamber 11 and open fully the chamber 12 in a suspended condition. Subsequently, a hot gas discharged from the compressor is circulatingly supplied to an evaporator 14 to start the melting of spherical lumps of ice at freezing surfaces in contact with the inner surfaces of the small ice making chambers 13, so that the lumps of ice drop under their own weight, and slide down a water guide plate 48 to be guided and received into an ice storage.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a method for controlling the deicing operation of an ice maker that automatically produces ice blocks of irregular shapes such as spherical water, and more specifically, In an automatic ice-making machine that closes the first ice-making compartment from below with a second ice-making compartment provided in a second ice-making compartment and produces ice cubes of a desired shape in an internal space defined in one ice-making compartment, ice removal is performed. The present invention relates to a deicing operation control method that can ensure that the obtained ice cubes remain in the first ice making compartment when the second ice making compartment is forcibly separated from the first ice making compartment during operation.

BACKGROUND OF THE INVENTION Automatic ice making machines that continuously produce regular hexahedral ice cubes, ice sheets of a required thickness, and other ice blocks are suitably used in various industrial fields depending on the application.

For example, as an ice maker for producing the ice cubes described above, (1) a cube-shaped ice making compartment is formed in a number of downward directions in the ice making compartment, the ice making compartment is opened and closed from below by a water tray, and the ice making water is poured from the water tray. There is a so-called closed cell method in which ice cubes are gradually formed in each ice-making chamber by spraying water into each ice-making chamber, and a system in which ice-making water is directly supplied to a number of ice-making chambers that open downward through a water tray. A so-called open-cell method is known in which ice cubes are formed in the small chamber without the need for a small ice cube.

In addition, as an ice-making machine that continuously produces ice sheets, an ice-making plate equipped with an evaporator connected to the refrigeration system is arranged at an angle, and ice-making water is supplied flowing down to the front or back surface of the ice-making plate. The flow-down method, which forms ice sheets on top, is widely studied. Furthermore, there is an ice making method in which the ice sheets obtained by the ice making machine described above are crushed to obtain fine granular crushed ice, and an ice making method in which water flows down and freezes on the inner wall of the cooling cylinder to form an ice layer, and this ice layer is rotated. An auger method is also used to obtain flaky ice by scraping it with an auger's cutting blade.

Problems to be Solved by the Invention As mentioned above, ice manufactured by various conventional ice making machines includes cube-shaped ice cubes, wooden blocks, other flaky ice, and crushed ice.

Among these types of ice, the ones that have the required shape and can be floated on drinks or used as cooling beds for various foodstuffs are:
(Ice ice cubes are produced with a fixed shape, but usually cannot be used in their original size).

However, in recent years, coffee shops, restaurants, and other service facilities are making strenuous efforts to differentiate themselves from their competitors in various ways and attract customers. For example, there is a trend to use spherical ice instead of the conventionally widely distributed ice cubes, thereby offering customers a new variety.

Since this spherical ice is widely used for eating and drinking, it must be clear and transparent ice cubes with high commercial value without clouding due to air inclusion, and it must also be able to be produced in large quantities. Until now, there has been no automatic ice maker that meets this type of requirement. Therefore, the inventor of the present application developed an ice-making machine capable of producing large amounts of transparent and clear spherical ice, and obtained a mechanism that fully satisfies the above requirements. On April 29th, he filed a patent application for his invention ``Automatic Ice Maker''.

The ice-making machine according to the previous application includes: ■ a first ice-making compartment that defines a number of first ice-making compartments that open downward and is equipped with an evaporator on the back;
■No. 2111 A second building with many ice chambers opening downward.
The ice making chamber is basically provided with an ice making chamber, and the first and second ice making chambers are configured to close correspondingly during ice making operation to define a spherical or other ice forming space therein. After performing ice making operation with this ice maker and producing ice blocks such as spherical ice in the space, it is necessary to shift to deicing operation and remove the ice blocks from both ice making compartments.

For this purpose, the second ice-making compartment, which closes the first ice-making compartment from below, is forcibly separated from the first ice-making compartment, but at this time, the ice cubes themselves are removed from the inner surfaces of the first and second ice-making compartments. Since both ice-making compartments are strongly frozen, the order in which these ice-making compartments are thawed is important. If the first and second ice-making chambers are allowed to heat up at the same time, the ice blocks that have been thawed from both ice-making chambers will fall all at once as the second ice-making chamber is forcibly removed. In this case, inconvenient situations such as ice blocks getting caught and remaining in the second ice-making compartment, which is recessed in the second ice-making compartment and open upwards, or preventing ice blocks from falling smoothly into the water storage, can be avoided. arise.

In view of the above-mentioned drawbacks, this invention has been proposed in order to suitably solve the problem. To provide a deicing operation control method which ensures that the obtained ice blocks remain in a first ice-making chamber without dropping the ice blocks all at once.

Means for Solving the Problems In order to overcome the above-mentioned problems and suitably achieve the intended purpose, the present invention is provided with an evaporator disposed inside the ice maker body and connected to the refrigeration system on the top surface. , first on the bottom
A first ice-making chamber is provided with a large number of ice-making compartments, and the first ice-making chamber is rotatably supported inside the ice-making machine main body, and the first ice-making chamber is rotatably supported inside the ice-making machine body.
a second ice-making compartment having a plurality of second ice-making compartments that correspondingly close the ice-making compartments from below, and a second ice-making compartment that separates from the first ice-making compartment to open the first ice-making compartment during deicing operation; An automatic ice making machine that is equipped with a heating means that is disposed in a second ice making compartment and is energized during deicing operation, and that injects and supplies ice making water to the first and second ice making compartments to produce ice cubes of a desired shape, The present invention is characterized in that the operation of the compressor in the refrigeration system is controlled to be stopped while the heating means is energized in accordance with the deicing operation.

Embodiment Next, a method for controlling the de-icing operation of an automatic ice maker according to the present invention will be described below with reference to the accompanying drawings in relation to a device that can suitably carry out the method. In addition, according to the automatic ice making machine according to the present invention, the spherical water 1 shown in FIG. 6(a)
In addition, diamond-cut polyhedral water 2 as shown in FIG. 6(b) can also be produced, but as an example, a case where a large number of spherical waters are continuously produced will be described. □
(Regarding ice-making mechanism) Fig. 1 schematically shows the main ice-making mechanism of an ice-making machine capable of suitably implementing the de-icing operation control method according to the present invention in an ice-making state. The ice-making compartment 10 basically includes an ice-making compartment 11 and a second ice-making compartment 12 that can be opened and closed from below.

The first ice maker 11 is a rectangular structure made of a metal with good thermal conductivity, and is located above inside the case (not shown) of the ice maker.
The first part is fixed at a required angle and opens downward.
A large number of ice-making chambers 13 are recessed in the lower surface of the ice-making chamber 13 in a predetermined alignment pattern. Their 1st GT1! The ice chamber 13 is formed as four hemispherical parts, the diameter of which is, for example, 3 cm, and the depth of the recess is set to 1.5 cm.

The upper surface of the first ice-making compartment 11 (that is, each first ice-making compartment 13
An evaporator 14 consisting of a tube constituting the - section of the refrigeration system (described later) shown in Fig. 3 is closely fixed to the top of the evaporator 14 (the top of the evaporator 14), and by operating the refrigeration system, refrigerant is circulated through the evaporator 14. As a result, the first ice making chamber 11 is cooled down to below freezing point. Further, during deicing operation, by opening the hot gas valve HV in the control circuit shown in FIG. 5, hot gas can be supplied to the evaporator 14 and the first ice making chamber 11 can be heated. .

At the top of the required first ice-making compartments 13 in the first ice-making compartment 11, ice-making detection thermos 1゛h are disposed. This ice-making detection thermometer Th1 is installed in the control circuit shown in FIG. 5, and during ice-making operation, its contact c-a is opened (contact c-b is open), and when the ice-making operation is finished,
It is set so that the contact c-a can be opened (the contact c-b can be closed). Further, a de-icing detection thermometer Th2 is disposed at the top of another first ice-making compartment 13, and this de-icing detection thermo Th2 opens its contacts only when the first ice-making compartment 13 is in a cooling state. The contact is set to close when the ice is separated from the ice making chamber 13 and the temperature rises.

Immediately below the first ice-making compartment 11, a second ice-making compartment 12 is arranged, which closes the first ice-making compartment 13 diagonally from below during ice-making operation and opens the first ice-making compartment 11 during de-icing operation. ing. This second ice-making chamber 12 is also made of a metal with good thermal conductivity, and on its upper surface, the second ice-making chambers 15 (consisting of hemispherical recesses corresponding to each of the first and fifth ice chambers 13) are arranged upward in a required alignment pattern. There are many recesses in the area. The diameter of the second ice-making chamber 15 is also set to, for example, 3G, and the depth of the recess is set to 1.5 mm. Therefore, when the first ice-making compartment 11 is closed by the second ice-making compartment 12 from below, both ice-making compartments 13.1
A spherical space with a diameter of 30 is defined inside 5.

Further, an electric heater H for promoting deicing is buried around the bottom of the second ice making compartment 15, and as will be described later in connection with the control circuit in FIG. 5, when the N ice operation is completed, the second ice making compartment The heater II is energized until the heater 12 reaches the required temperature.

Furthermore, a through hole 12a of a required diameter is provided at the bottom of each second ice making compartment 15.
is perforated and distributed through this as described below? +-? 24 supplies ice-making water and discharges unfrozen water.

The upper end of the second ice-making chamber 12 is attached to a bracket 45 that is tiltably supported via a pivot 16 at a fixed position above the inside of the ice-making machine casing. If the second ice-making chamber 12 is rotated clockwise about the pivot 16, the first ice-making chamber 13 can be opened (see FIGS. 2 and 4), and the first ice-making chamber 13 can be opened from the open state. By rotating it counterclockwise, the first ice making chamber 13 can be closed again. In addition,
An actuator motor AM shown in FIG. 1 is preferably used as the opening/closing means for the second ice making chamber 12.
A cam lever 17 and a lever piece 37 are commonly fixed to the rotating shaft.

Furthermore, the tip 17a of the cam lever 17 and the second ice making chamber 12
A coil spring 18 is elastically engaged between the front end of the coil spring 18 and the front end of the coil spring 18 . The cam surface 17b formed at the base of the cam lever 17 is the second cam surface 17b that closes the first w1 ice chamber 11.
The dimensions are set so as to be able to engage with the side upper surface of the ice making chamber 12. The first ice making chamber 11 is provided with a changeover switch S2 shown in the circuit diagram of FIG.
, is switched from the contact a-b side to the contact a-c side.

On the back side of the second ice-making chamber 12, a distribution pipe 24 having a pressure chamber 23 is arranged close to it with a slight gap. A water fountain hole 25 is provided. When the second ice making compartment 12 is opened relative to the first ice making compartment 11, each of the water fountain holes 25 is connected to the through hole 1 formed in the second ice making compartment 15.
It is configured to face 2a correspondingly.

A water guide plate 47 is disposed on the lower surface of the distribution 'i'l' 24 with a spacer 46 in between, and extends parallel to the lower surface of the second ice making chamber 12 . This water guide plate 47 is for collecting unfrozen water that falls from the through hole 12a of the second ice making chamber 15 during ice making operation and guiding it to the ice making water tank 19 below. Further, a temperature detection thermometer Th3 is disposed at a required location of the second ice making compartment 12, so that the temperature of the second ice making compartment 12 can be monitored.

As shown in FIG. 1, the ice making water tank 19 is provided below the housing of the ice making machine and directly below the first and second ice making chambers 11.12, and has an inclined surface 19a extending diagonally upward from the tank body. have. As shown in FIG. 1, it is preferable that a second water guide plate 48 be interposed between the inclined surface 19a and the water guide plate 47 in an inclined manner. The lowermost edge of the second water guide plate 48 is bent downward and faces above the upper end of the inclined surface 19a, and unfrozen water is guided to the inclined surface 19a via this bent edge. At the same time, ice blocks during deicing slide down on the second water guide plate 48 and can be collected in the water storage. A water supply pipe 21 led out from the bottom side of the ice-making water tank 19 is communicated with the pressure chamber 23 via a water supply pump 22, and the water supply to the tank 19 is as follows.
This is done by opening the water supply valve WV via the water supply pipe 27 connected to the external water supply system.

(Regarding the refrigeration system) Fig. 3 shows a schematic configuration of the refrigeration system in the ice maker, in which the vaporized refrigerant compressed by the compressor CM is condensed and liquefied in the condenser 28 via the discharge pipe 34, and then After being dehumidified in step 29, the pressure is reduced in capillary tube 30, and it flows into evaporator 14 where it expands and evaporates all at once, exchanging heat with first ice making chamber 11, and forming each first ice making small chamber 13. Cool to below freezing. The vaporized refrigerant evaporated in the evaporator 14 and the unevaporated liquefied refrigerant flow into the accumulator 31 in a gas-liquid mixed state, where they are separated into gas and liquid. The gas phase refrigerant then returns to the compressor CM via the suction pipe 32,
The liquid phase refrigerant is stored in the accumulator 31 .

Furthermore, a hot gas pipe 33 is branched from the compressed *CM discharge pipe 34, and this hot gas pipe 33 is communicated with the inlet side of the evaporator 14 via a hot gas valve HV. This hot gas valve HV is controlled to be opened only during deicing operation and closed during ice making operation. That is, during deicing operation, the hot gas valve HV is opened and the high temperature refrigerant discharged from the compressor CM is sent to the evaporator 1 via the hot gas pipe 33.
4 and heats each first ice-making chamber 13, the circumferential surface of the spherical ice produced inside the chamber is melted, and each ice block is caused to fall by its own weight. In addition, the high-temperature refrigerant flowing out from the evaporator 14 flows into the accumulator 31, heats and evaporates the liquid phase refrigerant staying in the accumulator 31, and returns it to the compressor CM from the suction pipe 32 as a gas phase refrigerant. let them return. Note that the symbol FM in FIG. 1 indicates a fan motor for the condenser 28.

(About the electrical control circuit) An example of the control circuit that operates the device according to this embodiment is as follows:
It is shown in FIG. In the figure, a fuse F and a water storage detection switch S1 are provided in series between the power supply line R and the connection point, and a compressor CM is connected to the relay X between the connection point and the power supply line T. are connected via normally closed contacts x-b.

Further, during the deicing operation, the terminal a of the changeover switch S2, which is energized by the tilting of the second ice making chamber 12, is connected to the connection point, and the changeover contact of the changeover switch S is connected to the contact point of the ice making detection thermometer Th1. Connected to C.

Between the contact a of the ice-making detection thermometer 1゛h and the line T, there is a drive motor PM of the pump 22 and a fan motor F.
M are connected in parallel, the contact of the thermometer Th1 is connected to the contact a of the temperature detection thermometer Th, and a relay X and a heater H are connected between the switching contacts of the thermometers Th and l and the line T. They are connected in parallel. Further, the other switching contact C of the temperature detection thermometer Th is connected to the tilting drive terminal m of the actuator motor AM. Further, the terminal of the motor AM is connected to a line T, and
The return drive terminal n is connected to the changeover contact C of the changeover switch S2 via the contact of the deicing detection thermometer Th2. In addition, the changeover contact C of the changeover switch S2 and the line T
A hot gas valve HV and a water supply valve Wv are connected in parallel between the two.

Effects of the Embodiment Next, a method for controlling the de-icing operation carried out by operating the automatic ice-making machine described above will be explained. )
Insert. At this time, since no ice blocks are stored in the water storage, the water storage detection switch S is closed, and the changeover switch S2 is connected to the contacts a and b.

Further, since the temperature of the first ice making chamber 11 is maintained at about room temperature, the ice making detection thermometer Th is connected to the contact point a-a side. Therefore, power supply to the compressor CM, fan motor FM, and pump motor PM is started at the same time as the power is turned on, and ice making operation is started to cool the first ice making chamber 11.

Also.

The ice-making water 20 from the ice-making water tank 19 is pumped to the distribution pipe 24, and is passed through each water fountain 25 in the distribution pipe 24 and the through hole 12a drilled in the second #ice chamber 12 to the respective corresponding water holes 12a. It is injected into the first ice making compartment 15.

The injected ice-making water comes into contact with the inner surface of the first ice-making chamber 13 and is cooled, moistening the second ice-making chamber 15 in the second ice-making chamber 12 located below. The ice falls through the through hole 12a into the water guide plate 47, and is further returned to the ice making water tank 19 via the second water guide plate 48 and the inclined surface 19a, where it is fed again. As this ice-making water circulation is repeated, the overall temperature of the ice-making water stored in the tank 19 gradually decreases. In addition, the second ice compartment 12 is partially in contact with the first ice making compartment 11, and unfrozen water cooled in the second ice compartment 15 is in contact with and circulated. Similarly, the temperature itself gradually decreases to below the freezing point. First, a portion of the ice-making water freezes on the inner wall surface of the first ice-making chamber 13 to form an ice layer, and the unfrozen water returns to the ice-making water tank 19 through the through hole 12a, which also serves as a return hole, repeating the cycle. In the meantime, the growth of the ice layer further progresses, and finally spherical ice 1 is gradually generated in the spherical space defined by the first ice making chamber 13 and the 21H ice chamber 15 (Ice making is completed) (transition to deicing operation) In this way, the first ice making compartment 13 and the second ice making compartment 15
When ice making is completed and the temperature of the first ice making chamber 11 falls to the required temperature range, the ice making detection thermo T detects this.
h, switches from the contact a-a side to the contact c-b side, and energization to the fan motor FM and pump motor PM is stopped (see the timing chart in FIG. 7). Also the second
Since the temperature in the ice making chamber 12 has fallen below the required temperature due to the formation of the spherical ice 1, the temperature detection thermometer Th is connected to the contact point a-
The relay X connected to the b side is energized and excited to open the normally closed contact x-b, and the operation of the compressor CM is also stopped. As a result, the circulation of the refrigerant to the evaporator 14 is stopped, and forced cooling of the first ice-making chamber 11 is no longer performed. Also, the electricity supply to the heater H is started and the second ice making chamber 12
is heated, and the heat conduction melts the frozen spherical ice 1 in the second ice making chamber 15, thereby reducing the bonding force between the obtained spherical ice 1 and the second ice making chamber 15.

Next, when the temperature of the second ice making chamber 12 rises to a predetermined value or more due to heating by the heater H, the temperature detection thermometer Th
3 detects this and switches the contact a-b to the contact a-a side. This de-energizes relay X and normally closed contact x
-b is closed, and as shown in the timing chart of FIG. 7, the operation of the compressor CM is restarted and the power supply to the heater H is stopped. Also, electricity is supplied through the tilting drive terminal m of the actuator motor AM, and the motor A
By driving M, the cam lever 17 rotates, and the cam surface 17b formed at the base forcibly presses the side upper surface of the second ice making chamber 12 downward. As already mentioned, since the spherical ice in the second ice making compartment 15 has been thawed, the second ice making compartment 12 is forcibly separated from the first ice making compartment 11 and begins to tilt clockwise. Finally, the second ice-making chamber 12 is completely opened in a hanging state, as shown in FIGS. 2 and 4.

At this time, the spherical ice 1 is still frozen and fixed in the first ice-making compartment 13 in the first ice-making compartment 11 .

At the timing when the second ice making chamber 12 is tilted to the maximum, the lever piece 37 presses and urges the changeover switch S2, and switches the contacts a-b to the contacts a-c side. As a result, the water supply valve Wv is opened, and new ice-making water is supplied to the ice-making water tank 19, and the hot gas valve HV is also opened, causing water to be discharged from the compressor CM, which has already restarted its operation as described above. High temperature refrigerant (hot gas) to the evaporator 14 #
Supply 4 rings. Therefore, the first ice making chamber 11 is heated by the hot gas, and the frozen surface between the inner surface of the 11j ice compartment 13 and the spherical ice begins to melt. Note that since the de-icing detection thermometer Th maintains its open state, a return command for the actuator motor AM is not issued yet.

Furthermore, when the eleventh ice chamber 13 is heated by the circulation of hot gas in the evaporator 14, the ice between the chamber wall and the spherical ice is broken, as shown in FIGS. 2 and 4. falls due to its own weight, slides down along the second water guide plate 48 provided directly below it, and is guided and collected in a water storage (not shown).

When all the spherical ice leaves the first ice making compartment 13 in this way, the temperature of the first ice making compartment 11 rises all at once due to the hot gas circulating in the evaporator 14.

When the deicing detection thermometer Th detects this temperature rise, the thermometer 1h closes and the actuator motor A
The return drive terminal n at M is energized. As a result, the motor AM rotates in the opposite direction to drive the cam lever 17, and the coil spring 18 elastically engaged between the lever 17 and the second ice-making chamber 12 causes the second ice-making chamber 12 to move counterclockwise. The first ice making chamber 13 of the first ice making chamber 11 is closed obliquely from below by being rotated and energized to return to the tilted state.

Incidentally, due to the reverse rotation of the motor AM, the cam lever 17 also rotates in the reverse direction, presses and energizes the changeover switch S2, and switches from the contact a-c side to the contact a-b side. As a result, the water supply valve Wv and the hot gas valve HV are closed, and the supply of ice-making water and hot gas is stopped E. The ice-making operation is then resumed by returning to the initial state, and the above-described operations are repeated. When the ice-making operation and the de-icing operation are repeated and a predetermined amount of spherical ice is stored in the water storage, the water storage detection switch S is activated.
, is opened and the operation of the ice maker is stopped (Fig. 7).

In the illustrated example, a control example is described in which an electric heater H is used as a heating means, and a combination of an ice-making detection thermometer Th1, a temperature detection thermometer Th3, and a relay X is used to stop the compressor CM and energize the electric heater H. However, it is not limited to this. For example, a timer may be incorporated into the control circuit, and the timer may provide control such that the electric heating of the electric heater H is only performed for a certain period of time.

Furthermore, the ice-making mechanism that automatically produces irregularly shaped ice cubes such as spherical water is not limited to the structure in which the first ice-making compartment is arranged at an angle inside the machine, as shown in the figure, but the first ice-making compartment is arranged horizontally inside the machine. Various configurations may be suitably adopted, such as a structure in which the first ice-making chamber is rotatably closed from below. That is, if it is a type that has a first and a second ice making compartment, and releases the generated ice cubes from the second ice making compartment first, and the second 'i# ice compartment is provided with a heating means. The deicing operation/control method according to this embodiment can be applied to any automatic ice making machine.

As described in detail of the invention, according to the deicing operation control method according to the present invention, an ice making machine that automatically produces irregularly shaped ice blocks such as spherical water, etc., for example, a first ice making compartment provided in a first ice making compartment. , in an automatic ice making machine that is closed from below by a second ice making compartment provided in the second ice making compartment and produces ice cubes of a desired shape in the internal space defined in both ice making compartments, when the second ice making compartment is closed during deicing operation. Control is preferably performed to stop the operation of the compressor in the refrigeration system while the heating means disposed in the ice making compartment is energized. Therefore, the second ice-making compartment can be forcibly separated from the first ice-making compartment while the ice cubes are reliably left in the first ice-making compartment.

That is, instead of heating the first and second ice-making compartments simultaneously during deicing operation, while the second ice-making compartment is being heated by the heating means, refrigerant and hot gas are supplied to the evaporator installed in the first ice-making compartment. Since control is provided to prevent circulation of any of the ice cubes, even if the second ice compartment is forcibly removed from the first ice compartment for dehydration, the ice cubes still remain in the first ice compartment in a frozen state. Therefore, even if the second ice-making compartment is tilted, falling ice cubes may be caught and remain in the second ice-making compartment that opens upward in the second ice-making compartment, and the ice cubes may not be smoothly transferred to the water storage. Inconvenient situations such as being blocked from falling can be effectively avoided.

[Brief explanation of the drawing]

FIG. 1 is a front-part vertical sectional view showing a schematic configuration of an automatic ice maker that can suitably implement the deicing operation control method according to the present invention, and FIG. 2 shows a second ice maker in the ice maker shown in FIG. Figure 3 is a schematic perspective view with the chamber open, Figure 3 is a circuit diagram of a general refrigeration system in an automatic ice maker, Figure 4 is a 1m diagram with the second ice maker open, and Figure 5 is a schematic diagram of the refrigeration system in an automatic ice maker. Sixth circuit diagram showing an example of an ice-making control circuit that controls the operation of the ice-making machine according to the embodiment
FIG. 6(a) is an explanatory diagram showing spherical water, FIG. 6(b) is an explanatory diagram showing multifaceted water, and FIG. 7 is an operation control of the ice making apparatus according to the embodiment by the ice making control circuit shown in FIG. It is a timing chart figure at the time of doing. 11...First ice making room 12...Second ice making room 13.
...First ice making compartment 14...Evaporator 15...Second ice making compartment H...Heating means (electric heater) CM...Compressor FIG, 3 Viewing 11...First ice making compartment 12 ...2nd @ice chamber 13...1N ice chamber 14...evaporator FIG, 6 (al fbl FIG, S °1-

Claims (1)

[Claims] It is disposed inside the ice maker main body, and includes an evaporator (14) connected to the refrigeration system on the top surface, and a first ice making chamber (14) on the bottom surface.
A first ice-making chamber (11) having a plurality of recessed ice-making chambers (13) is rotatably supported inside the ice-making machine body, and correspondingly closes the first ice-making chamber (13) from below during ice-making operation. A second ice-making compartment (12) is provided with a large number of second ice-making compartments (15), and separates from the first ice-making compartment (11) to open the first ice-making compartment (13) during deicing operation. and a heating means (H) disposed in the second ice-making chamber (12) and energized during deicing operation, and configured to inject and supply ice-making water to the first and second ice-making compartments (13, 15). In an automatic ice maker that produces ice blocks of a desired shape, while the heating means (H) is energized during deicing operation,
A method for controlling the deicing operation of an automatic ice maker, comprising controlling the operation of a compressor (CM) in a refrigeration system to be stopped.