JPH0686972B2 - Ice machine controller - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ice making machine that circulates ice making water in a water storage tank in an ice making member that constitutes a refrigerating device with a circulation pump device to produce plate ice, and particularly to an operation switch. Is related to control from turning on the power to entering the ice making cycle.

2. Description of the Related Art An example of a conventional ice making machine will be described below with reference to the drawings. FIG. 3 shows the structure of a conventional ice making machine, and FIG. 4 shows a flow chart of the operation thereof. Reference numeral 1 denotes an ice making machine main body formed of a heat insulating wall. Are formed from. An ice making member 5 having an evaporator 4 is installed in an inclined manner in the ice making chamber 2. In addition, ice making member 5
Is equipped with a sprinkler 4a for flowing uniform water. Further, a water storage tank 6 for storing ice making water and a circulation pump 7 are installed in the water storage tank 6, and the ice making member 5 constitutes a running water circulation type ice making system. The ice making member 5 is attached in close contact with an ice making detector 23 for detecting ice making by detecting a predetermined temperature of the ice making member 5. Further, below the ice making member 5, there is provided an ice storage chamber 8 and a plate ice cutting heater device 9 for receiving the plate ice after the ice removal and cutting it into an ice block of a predetermined size. In addition, an electric compressor 10 and a condenser 11 that form a refrigeration circuit together with the evaporator 4 are arranged in the machine room 3. Reference numeral 12 denotes an air cooling fan of the condenser 11 and its motor. Further, 13 is an ice storage detecting device having a temperature sensing portion for detecting a predetermined amount of ice in the ice storage chamber 8 and is set so as to detect the ice storage by sensing the contact temperature of the ice blocks. Reference numeral 14 is a water supply valve as a water supply device for electrically opening and closing a water supply pipe 15 connected to a water source to introduce ice making water into the water storage tank 6. In the water storage tank 6, a drainage pipe 16 for maintaining a predetermined water level,
An upper water level detecting device 18 for detecting an upper level water level 17 and a lower water level detecting device 20 for detecting a lower level water level 19 are provided.

Reference numeral 21 is a solenoid valve for electrically controlling the hot gas flowing from the electric compressor 10 to the evaporator 4 when the ice generated in the ice making member 5 is released.

Next, the operation will be described. After installation, operation switch
The power is turned on at 22 and the ice-making cycle starts immediately, but at that time, the ice-making operation is started in an empty state with no ice-making water in the water storage tank 6. Since there is no ice making water in the water storage tank 6 and it is empty, it is detected by the lower water level detection device 20, and the ice making cycle is stopped and switched to the ice removing cycle. When ice making is started from a state where the water storage tank 6 is filled with ice making water, the ice making water delivered by the circulation pump 7 installed in the water storage tank 6 is guided to the sprinkler 4a by the circulation hose 24. . The ice making water guided to the water sprinkling device 4a is caused to flow out to the evaporator 4 and is collected in the water storage tank 6.

As ice is generated in the ice making member 5, the water level in the water storage tank 6 drops, and when it reaches the lower level water level 19 set to a predetermined ice thickness, it is detected by the lower water level detection device 20 and the ice making cycle is stopped and released. Switch to ice cycle. In the deicing cycle, hot gas flows into the evaporator 4 by switching the solenoid valve 21 to defrost the plate ice generated in the ice making member 5, and
Ice water is supplied to the water storage tank 6 by the water supply valve 14. When the ice making water reaches the upper water level 17 of the water storage tank 6, the upper water level detecting device 18 detects the ice making water, and the overflow timer 28 operates. At this time, the water level in the water storage tank 6 is kept constant by the drainage pipe 16. This constant water level serves as a reference for the predetermined ice thickness. When the plate ice is released from the ice making member 5 and the ice making member 5 reaches a predetermined temperature, the ice making detection device 23 operates to stop the ice making and switch to the ice making cycle. The separated plate ice is cut by the plate ice cutting heater device 9 provided at the lower portion of the ice making member 5 and stored in the ice storage chamber 8. When a predetermined amount of ice blocks is stored in the ice storage chamber 8, it is detected by the ice storage detection device 13,
After the ice making-ice releasing of the cycle is completed, only the plate ice cutting heater device 9 is energized and the rest is completely stopped. Immediately after the detection of the ice storage detecting device 13 is released, the operation is switched to the ice making cycle.

Problems to be Solved by the Invention However, in the ice making machine having the above configuration, the power is turned on by the operation switch after installation, and the ice making cycle is started immediately, but the ice making member surface is dry, and there is no water familiarity,
It is difficult to obtain a uniform flow of water on the surface of the ice making member.
In the worst case, there was a drawback that water leakage occurred and an ice block with a constant ice thickness could not be obtained.

Means for Solving Problems In the present invention for solving the above problems, after the power is turned on by the operation switch, the water supply valve and the circulation pump are operated, and the stored water is detected by the upper water level detection device. After that, the ice supply valve and the circulation pump are operated for a certain period of time, and then the water supply valve and the circulation pump are stopped for a certain period of time to shift to the ice making cycle.

Effect The present invention, due to the above-described configuration, does not immediately shift to the ice making cycle after turning on the power with the operation switch, but first operates the water supply valve and the circulation pump to cause water leakage due to poor water familiarity on the surface of the ice making member. Even if the upper water level detector detects water storage at the water level detection position, the water supply valve and the circulation pump continue to operate for a certain period of time to keep the ice making water flowing on the surface of the ice making member and to improve the water familiarity. To do. Next, the water supply valve and the circulation pump are stopped for a certain period of time to prevent the thickness of the circulating water from becoming too thick, and the stored water is stabilized at a certain water level.

Therefore, during the ice-making cycle, the surface of the ice-making member is well fit to the water, uneven water flow and water leakage are prevented, and an ice block having a constant ice thickness is obtained.

Embodiment Hereinafter, a control device for an ice making machine according to an embodiment of the present invention will be described with reference to the drawings. The structure of the ice maker main body excluding the control device is the same as the conventional one, and the description thereof will be omitted. 1 and 2 are block diagrams and flow charts showing the control device of the ice making machine according to the present invention, the main part of which is constituted by a microcomputer 25. This microcomputer 25 has a well-known program (water supply →
(Ice-making → ice-breaking operation) is memorized and after turning on the power,
The first timer 26 that operates after the upper water level 17 is detected by the upper water level detection device 18 before entering the ice making cycle
And a second timer 27 that operates after the first timer 26 expires. Next, the operation will be described. After turning on the power with the operation switch 22, first, the water supply valve 14 and the circulation pump 7 are operated, and the upper water level detector 17 operates the upper water level 17
Is detected, the water supply valve 14 and the circulation pump 7 are continuously operated for a certain time until the first timer 26 counts up, and after the first timer 26 counts up, the water supply valve
15 and the circulation pump 7 are stopped for the second timer setting time. By this stop, the circulating water returns to the water storage tank 6 and overflows from the drainage pipe 16, and the ice-making water reaches a predetermined amount. After that, it is transferred to an ice making cycle. Therefore, during the ice-making cycle, the surface of the ice-making member 4 is better fit to the water, uneven flow of water and occurrence of water leakage are prevented, and an ice block having a constant ice thickness is obtained.

EFFECTS OF THE INVENTION As is clear from the above description, the ice making machine of the present invention is
After turning on the power with the operation switch, do not immediately move to the ice making cycle, first operate the water supply valve and the circulation pump, and supply water until a certain time elapses after the upper water level is detected by the upper water level detection device. The valve and the circulation pump continue to operate, and then the water supply valve and the circulation pump are stopped for a predetermined time, and then transferred to the ice making cycle, so that the water fitting on the surface of the ice making member is improved and uneven water flow and water leakage occur. It has the effect of being prevented.

[Brief description of drawings]

FIG. 1 is a block diagram showing a controller of an ice making machine according to an embodiment of the present invention, FIG. 2 is a flow chart showing the operation of the controller, FIG. 3 is a sectional view of a conventional ice making machine, and FIG. Is a flow chart showing the operation of the conventional ice making machine. 5 ... Ice making member, 6 ... Water tank, 7 ... Circulation pump, 14 ... Water supply valve, 17 ... Upper water level, 18 ... Upper water level detection device, 22 ... Operation switch, 26 ... First timer , 27
...... Second timer.

Claims (1)

[Claims] 1. An ice making member for producing plate ice, a circulation pump device for circulating ice making water in the ice making member, a water storage tank for storing ice making water, and a water level of a higher level provided in the water storage tank. And a water supply valve for supplying ice making water from the water supply to the water storage tank, and an operation switch for operating and stopping the ice making machine, and the water supply valve after the power is turned on by the operation switch. A first timer for operating the circulation pump, starting operation after the upper water level is detected by the upper water level detection device, and continuing the operation of the water supply valve and the circulation pump for a certain period of time; and ending the first timer. A control device for an ice making machine, comprising a second timer for starting a post-operation and stopping a water supply valve and a circulation pump for a certain period of time, and shifting to an ice-making cycle after these operations.