JP4477887B2 - Auger ice machine - Google Patents

Description

  The present invention relates to an auger type ice making machine, and more particularly to control of a geared motor.

  The auger type ice making machine includes, for example, a driving device including a geared motor, a coupling and a housing, an ice making cylinder disposed on the upper side of the driving apparatus, an evaporator disposed on the outer periphery of the ice making cylinder, an ice making cylinder It is comprised by the auger etc. which are coaxially arrange | positioned inside and are driven with a drive device. During ice making operation, the ice making water supplied to the ice making cylinder by the evaporator is cooled to form a thin ice layer on the inner peripheral wall surface of the ice making cylinder, and the formed ice is scraped off by an auger rotated by a geared motor. However, it is configured so that it is sequentially fed upward, cut into an appropriate size, and continuously supplied to the outside of the apparatus.

  By the way, in the auger type ice making machine configured as described above, a reverse rotation of the auger may occur due to a wiring mistake of the three-phase geared motor. When the reverse rotation occurs, the ice that should be transported upward in the ice making cylinder is pressed downward, and not only can the ice not be formed, but there is a possibility that a great deal of damage is given to the components of the ice making machine. In order to avoid this problem, conventionally, an anti-relay relay is incorporated and the ice making machine is stopped by detecting reverse connection, or a Hall IC is used as disclosed in Patent Document 1, and reverse rotation is performed after the geared motor is started. The method of stopping the ice making machine by detecting this was adopted.

JP 2002-318042 A

  However, the above-described method for incorporating a reciprocal relay has a problem that a space for incorporation is required and the cost is excessive. In addition, the method using the Hall IC has a problem that it is impossible to detect a wiring mistake or the like until the actual ice making operation is started since the reverse rotation cannot be detected until the motor is started and starts rotating after the completion of water supply.

  The present invention has been made to solve such a problem, and prevents a mistake in wiring of the geared motor and saves a space and a cost necessary for incorporating a reciprocal relay before starting the ice making operation. Another object is to provide an auger type ice making machine that detects rotation abnormality.

In order to achieve the above object, an auger type ice making machine according to the present invention comprises an ice making cylinder, an auger rotatably provided in the ice making cylinder, a motor for driving the auger, and a rotation detecting means for detecting the rotation of the motor. When the power-on means, coupled to the power-on means and the rotation detecting means, in the auger type ice making machine provided with a control device for controlling the motor, the controller, when the power-on means thus power is turned on, The motor is rotated before the ice making water supply to the ice making cylinder is started , and the rotation abnormality of the motor is detected based on the rotation of the motor.

According to the present invention, when the power is turned on , the motor is rotated before the ice making water supply to the ice making cylinder is started to detect a rotation abnormality. Therefore, the motor is in a stage before the actual ice making operation is started. The rotation direction abnormality can be detected, and the component parts of the ice making machine are not seriously damaged.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
Embodiment 1 FIG.
FIG. 1 shows a side view including a partial cross section of an auger type ice making machine according to Embodiment 1 of the present invention. The auger type ice making machine 1 mainly includes an ice making cylinder 3, an auger 5, and a geared motor 7. The ice making cylinder 3 is a cylindrical member made of metal and extending in the vertical direction, and an evaporator 9 extending spirally is provided on the outer periphery thereof. A heat insulating material 11 is provided around the evaporator 9 so as to surround the ice making cylinder 3 and the evaporator 9 together. A water supply pipe 13 for supplying ice making water to the inside of the ice making cylinder 3 is connected to the lower part of the ice making cylinder 3.

The auger 5 is rotatably provided in the ice making cylinder 3, and includes a main body 5a and a spiral blade 5b provided on the outer periphery thereof. An upper end 5 c of the auger 5 is supported by the fixed blade 15. On the other hand, the lower end 5d of the auger 5 is splined, and the lower end 5d is connected to the driving force transmission shaft 17 of the geared motor 7 similarly subjected to the spline processing via a coupling 19. .
The coupling 19 is covered by a housing 21 joined to the case of the geared motor 7 and the ice making cylinder 3.

  As shown in FIGS. 1 and 2, the inner cylinder surface 3 a of the ice making cylinder 3 is provided with a rotation sensor 31 made of a substrate on which two Hall ICs 27 and 29 are mounted. A magnet 33 that is a detection target of the rotation sensor 31 is embedded in the main body 5a of the auger 5 connected to the geared motor 7. The rotation sensor 31 is attached at a position where the magnetic force of the magnet 33 can be detected. Here, the rotation sensor 31 and the magnet 33 constitute rotation detection means for detecting the rotation of the geared motor 7.

  The entire auger type ice making machine 1 is controlled by a control board 50 which is a control device. The control board 50 also receives a signal from the rotation sensor 31 and controls the geared motor 7 and a compressor of a refrigeration circuit (not shown). Connected to the control board 50 are a display unit 52 of the auger type ice making machine 1 attached to an operation panel (not shown) and a power button 51 as power-on means.

Next, the operation of the auger type ice making machine according to Embodiment 1 will be described based on the flowchart of FIG.
First, when the power button 51 is pressed and the power is turned on (step S1), the control board 50 immediately rotates the geared motor 7 (step S2). At this time, since no water is supplied into the ice making cylinder, the idling operation is performed in a no-load state. The rotation time of the geared motor 7 may be about 1 second, for example.
While the geared motor 7 is idling, the control board 50 determines the rotation direction of the geared motor 7 based on a signal input from the rotation sensor 31 to the control board 50 (step S3).
In step S3, when the geared motor 7 is not rotating in the normal direction, that is, when it is not rotating forward, the control unit displays an error message notifying the rotation abnormality on the display unit 52 of the operation panel (not shown) (step S3). S10) After that, the operation of the ice making machine, for example, the operation of the ice making machine such as the function stop of the refrigerant circuit (stop of the compressor not shown) and the stop of the geared motor 7 is stopped (step S11).

On the other hand, when the geared motor 7 is rotating forward, water supply to the ice making cylinder 3 is started (step S4).
Thereafter, after completion of water supply (step S5), the geared motor 7 is started again (step 6). Thereafter, the ice making operation is started (step S7).
When the ice making operation is started, as shown in FIG. 1, the ice making water supplied into the ice making tube 3 is cooled by the evaporator 9 and freezes in layers on the inner surface of the ice making tube 3. The layered ice is scraped off by the spiral blade 5b of the rotating auger 5, and is sent upward in a sherbet shape. The sherbet-like ice is compressed into a columnar shape by the fixed blade 15.

As described above, according to the above-described embodiment, the auger type ice making machine does not require a reciprocal relay for detecting reverse rotation wiring, so that space and cost can be saved.
Further, since the detection is performed by rotating the motor immediately after the power is turned on and before the start of water supply, the operation of the motor can be confirmed without water supply. For this reason, tests can be performed before starting actual ice making work, such as immediately after installation of an ice making machine, and rotation abnormality can be detected by idling, so that ice can be pressed downward at the start of ice making work. And avoids damage to the ice machine.

It is a side view including the partial cross section of the auger type ice making machine which concerns on Embodiment 1 of this invention. It is a figure which shows the cross section regarding the auger of the auger type ice making machine which concerns on Embodiment 1 of this invention, and an ice making cylinder. It is a flowchart which shows the flow of control from the power activation of the auger type ice making machine which concerns on Embodiment 1 of this invention to the start of ice making operation.

Explanation of symbols

  1 auger type ice making machine, 5 auger, 7 motor, 31 rotation sensor, 33 magnet, 50 control board (control device), 51 power button (power-on means).

Claims (1)

An ice maker,
An auger rotatably provided in the ice making cylinder;
A motor for driving the auger,
Rotation detection means for detecting rotation of the motor;
Power-on means;
In an auger type ice making machine provided with a control device connected to the power-on means and the rotation detecting means and controlling the motor,
Wherein the controller, when thus power to the power-on means is turned on, along with rotating the motor before the start of the water supply of the ice making water to the ice making cylinder, based on the rotation of the motor, the rotation abnormality of the motor An auger type ice maker characterized by detecting

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