JPS6017655Y2 - ice making device - Google Patents

Description

[Detailed description of the invention] This invention uses a rotary body or auger with spiral protrusions formed around it to peel off the ice formed on the inner surface of the ice-making cylinder, which is cooled at freezing temperature in the evaporation pipe of the refrigeration cycle. Regarding an ice-making device that transfers ice into a compression chamber installed on an ice-making cylinder and compresses it into dense ice using a rotating spiral blade installed in the compression chamber, when the water supply to the ice-making cylinder is cut off, and when the inside of the water storage In any case when the water is full, if the operation of the electric compressor of the refrigeration cycle and the spiral blade and auger are stopped, the compression chamber will be filled with ice, and when the ambient temperature becomes low, the compression chamber and the ice making cylinder will be filled with ice. When the ice is refrozen and the water supply is restored, and when the ice making operation is started again due to a decrease in the amount of stored water, the refrozen ice becomes a heavy load and causes failure of the drive device for rotating the spiral blades and auger. Therefore, it is an object of the present invention to provide an apparatus that can smoothly perform ice remaking operation without such problems.

Next, embodiments of the present invention will be described in detail based on the drawings.

Reference numeral 1 denotes an ice-making cylinder that is cooled to freezing temperature by an evaporation pipe 2 of a refrigeration cycle, and its surroundings are covered with a heat insulating material 3, and the water level inside the cylinder is maintained at the water level of a tank 6, which is controlled by a float valve 5. It is connected to the tank 6 by a pipe 4.

A rotary body (auger) 8 is rotatably supported in the cylinder 1 and has a spiral protrusion 7 formed around it to peel off ice that has grown on the inner surface of the cylinder 1 and transport it upward. The rotation of the electric motor 9 is transmitted via a reduction gear device 10 .

11 is a compression chamber installed on the ice making cylinder 1, which is made of a metal wall connected to the ice making cylinder 1 in a heat transfer relationship, and has an ice discharge port 1 at the tip.
It has a conical shape with an inner diameter decreasing toward 2, and has a rotating helical blade 14 connected to the central axis 13 of the rotating body δ in a cantilevered state supported by an upper bearing 15 of the rotating body 8. .

The refrigeration cycle includes an electric compressor 16, a condenser 17, and an expansion valve 1.
8. Consists of a closed loop of evaporation pipes 2.

An electric heater 19 is wound around the compression chamber 11 to heat the compression chamber 11.

FIG. 3 shows an electric circuit diagram, in which 21 is a manual operation switch, 22 is a blower for the condenser 17, 23 is a timer,
24 is a relay, and 25 is a water cutoff detection switch that opens when a cutoff of water supply to the ice making cylinder 1 is detected, which is provided in the tank 6 or the pipe 4.

26 is a water reservoir (
This is a full water detection switch that opens when it detects that the tank (not shown) is full of water.

In the above configuration, when the operation switch 21 is closed to contact a for automatic operation, the contact 23A of the timer 23 is normally open, the switches 25 and 26 are closed, the relay 24 is energized, and the switch 24A is closed. It is opened and the timer 23 is stopped.

Further, the electric compressor 16, blower 22, and electric motor 9 are in operation.

Therefore, the rotating body 8 and the rotating spiral blade 14 rotate, and the ice stripped off by the rotating body 8 is transferred into the compression chamber 11 through the ice passage formed in the bearing 15 and compressed by the spiral blade 14. It becomes dense ice and is introduced into the water storage through the discharge port 12.

When the water is cut off or the water is full, the switch 25 or 26 is opened, so the relay 24 is de-energized, the switch 24A is closed, and the electric compressor 16, electric motor 9, and blower 22 are stopped.

On the other hand, since the timer 23 is energized through the switch 24A, the timer 23 is started and the switch 23A is closed, so that the electric heater 19 is energized and the compression chamber 11 is heated.

As a result of this heating, heat is transferred to the ice-making cylinder 1, and at the same time, the ice-melting water in the compression chamber 11 enters the ice-making cylinder 1 and melts the ice.

The timer 23 opens the contact 23A when a certain period of time has elapsed, and stops energizing the electric heater 19.

The timer 23 is reset by turning off the power supply, and when either the switch 25 or 26 is closed, the relay 24 is energized and the switch 24A is opened and reset.

When the switch 21 is closed to the contact point, the timer 23 is forcibly energized and the electric heater 19 can generate heat for a certain period of time, so it has the function of arbitrarily thawing the ice.

As described above, in this invention, when the water for ice making is cut off or when the amount of stored water reaches a predetermined amount, the timer device starts and energizes the electric heater for a certain period of time to heat the compression chamber and melt the ice in the compression chamber. Since the ice inside the ice-making cylinder can be melted together with the dregs, there is no increase in the load on the rotating spiral blades or auger caused by refreezing the ice, and ice-making operations can be resumed smoothly, preventing damage to any parts. can also be prevented.

Furthermore, by adding a circuit that operates a timer so that the compression chamber can be heated at will, the function as a safer ice making device is further improved.

[Brief explanation of the drawing]

Each figure shows an embodiment of the present invention; FIG. 1 is a partially sectional configuration diagram of an ice making apparatus, FIG. 2 is a refrigerant piping diagram, and FIG. 3 is an electric circuit diagram. 1... Ice making cylinder, 2... Evaporation pipe,
8...Rotating body, 11...Compression chamber, 14
...Rotating spiral blade, 19...Electric heater, 23...Timer, 25...Water cutoff detection switch, 26...Full water detection switch .

Claims (1)

[Scope of utility model registration request] The ice formed on the inner surface of the ice-making cylinder, which is cooled to a freezing temperature by the evaporation pipe of the refrigeration cycle, is stripped off by a rotating body having spiral protrusions formed around the periphery and transferred to a compression chamber separate from the ice-making cylinder; In an ice making device that compresses ice into dense ice using a rotating spiral blade provided in a compression chamber, the compression chamber is made of a metal wall connected to the ice making cylinder in a heat transfer relationship, and an electric heater for heating the compression chamber is provided. , a water cutoff detection switch for ice making water supplied to the ice making cylinder, a full water detection switch in a water storage for storing ice delivered from the compression chamber, and a timer are provided, and the rain detection switch detects water cutoff and full water, respectively. When the detection is made, the electric compressor of the refrigeration cycle and the electric motor for driving the rotating body and the rotating spiral blade are controlled to stop operating, and the timer is started based on the detected operation of either of the two switches. An ice making device characterized in that the heater is energized for a certain period of time.