JPS59161661A - Detector for slip-off of ice - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dehydration detection device used in an ice-making device for making ice cubes called Kugu Ice.

The ice making device that makes ice cubes is generally an ice making machine called a cell type (in some cases, a jet water jet type, a jet spray type, or a jet jet type).
This ice-making device itself has already been known since 1995, and a considerable number of its products are still in use in snack shops, coffee shops, hotels, restaurants, kitchens, etc. This cell-type ice-making device is Once the amount of water needed to make ice is stored in a water tank, this water is sent to the water tray by a circulation pump, and the water is poured into the ice tray through a number of small injection holes, one of which is placed on the top of the water tray, facing the bottom of the ice tray. By flowing the refrigerant from the refrigerator into the cooling pipe of the evaporator installed on the two sides of the
The ice was cooled to an extremely low temperature of around 111 degrees Celsius, and the ice was sprayed into each of the small square chambers provided on the bottom of the 111L ice tray. Drop the water tank through the return hole, water tank - circulation pump - water dish -
Ice is created in the small chamber of the ice tray by repeatedly circulating ice making water in the path between the ice tray and the water tank. Water drains and the amount of ice to be made grows from around the many small chambers formed on the bottom surface, and when it grows to a predetermined size and one small chamber becomes this large, a preset time is set at the time of starting ice making. time-up of the timer, the mostat or thermistor that detects that the temperature of the ice tray itself or the water body has fallen to a predetermined temperature, or the suction pressure (low pressure side pressure) of the refrigerator reaches a predetermined value. The operation of the pressure switch that detects when the pressure has dropped by one level, and the operation of the daffodil switch and float sinch that detect that the water returned to the aquarium has decreased by a predetermined amount, are automatically activated. At the same time, the circulation pump is stopped and the water injection is stopped, and the water tray is forcibly separated from the ice cube tray using one end as a rotation axis using a forward-reversible gear motor, and the other end of the water tray is lowered to a predetermined position. , the rotation of the gear motor is stopped at that position, and X is formed on the top side of the ice tray.
The ice cubes, whose surroundings have been slightly melted, detach from the small chamber of the ice cube tray under their own weight.
The ice slides on the top of the tilted water tray and falls into the stocker. When the ice falls from the ice tray, a dehydration detection device such as a thermostat or thermistor detects the temperature rise in the ice tray, and the gear motor is activated. Rotate in the opposite direction to the previous direction, close the open water tray so that the top 1 m of the water tray is on the bottom of the ice cube tray, and when the other end of the water tray rises to the specified position, At the same time as stopping the rotation of the gear motor, the hot gas that was flowing into the cooling pipe of the ice tray's evaporator was stopped, and instead liquid refrigerant was pumped into the cooling pipe from the condenser of the refrigerator through a pressure reducing element such as an expansion valve or capillary digger. water to cool the ice tray to an extremely low temperature, which returns it to its initial state again, and the water supply solenoid valve connected to the water supply pipe opens and ice-making water is poured into the water tank, filling it with a predetermined amount of water. The water supply solenoid valve is closed and the water supply is stopped due to the time-up of a preset timer or the operation of a flow switch or daffodil switch that detects the water level and amount of water in the aquarium. Then, water is sprayed from the water tray's injection hole into two small chambers located 1 m below the ice tray, and a series of ice-making operations are automatically performed. Various methods have been proposed and put into practical use.

When this type of cell-type ice making device finishes making trees in the ice tray, it is heated in a hot vat to dehydrate it, and starts making ice again, so it can detect when the dehydration has finished. A dehydration detection device is provided. Traditional dehydration detection is
During dehydration, the ice tray is heated.When the ice is removed from the ice tray, the temperature of the ice tray rises. mostat, thermistor, etc.), or by activating a timer after detection by a sensor to further increase the detection accuracy, and allowing the timer to time out a preset predetermined time.

This detection method involves setting the temperature detected by the temperature sensor to be sufficiently higher than the actual internal temperature when the ice is removed, and by setting the timer time to a sufficiently long timer to ensure that dehydration can be detected reliably. However, there is a considerable time lag between the actual end of dehydration and the time when the temperature sensor detects dehydration, or the time when the timer times up and detects dehydration. The disadvantage is that the time required to make ice is longer than the actual time and the ice making efficiency is poor, or the time that the pot θ is flowing is correspondingly longer.
The temperature of the refrigerator compressor and ice tray increases by 1,
The disadvantage is that these devices tend to overheat, shortening their lifespan.Furthermore, it takes time for these devices to cool down before the next ice-making operation begins, which reduces ice-making efficiency. etc.

This invention was made in view of the above circumstances, and allows dehydration to be detected almost at the same time as ice falls from the small chamber of the ice tray, thereby increasing ice making efficiency and eliminating unnecessary equipment. The object of the present invention is to provide a dehydration detection device that can detect dehydration.

The present invention will be described below based on embodiments shown in the accompanying drawings.

As shown in FIGS. 1 to 3, the water tray 2 provided below the ice tray 1 has one end connected to a motor such as a gear motor (not shown).
) It is fixed to a rotating shaft 2a which is rotated by the ice cube, and during ice making it is approached so as to overlap the ice tray 1 as shown by the solid line, and during ice removal it is approached so that it overlaps with the ice tray 2 as shown by the dashed line. The other end is separated from the ice tray 1. A dehydration detection device main body 3 for detecting dehydration is provided above the water I12, and an arm 4 extending upward from the side of the ice tray 1 is swingably supported on the side of the device main body 3. . A detection rod 5 is provided at one end of the arm 4 and projects downward t, and the detection rod 5 is formed so as to be freely retractable into an air vent hole 1b provided on the upper surface of the ice-making chamber 1a of the ice-making tray 1. The air vent hole 1 formed through the ceiling of the ice making tray 1 is a vent hole to prevent ice cubes from falling off due to their own weight from the ice making chamber 1a of the ice making section 1 during dehydration, and generally Although it is formed in only a few of the large number of ice-making compartments 1a, the large number of ice-making compartments 1a
All of a may be provided respectively.

In the device body 3, a dehydration detector 7 consisting of a limit switch, a microswitch, etc. and an ice jam detector 8 are housed facing each other, sandwiching a detection piece 6 provided in the middle of the arm 4. . When the water tray 2 is closed to a predetermined position during ice making and the ice tray 1 and the water tray 2 are close to each other, the arm 4 touches the upper edge formed on the side of the water tray 2. The detection rod 5 is formed so as to be moved upward upon contact with the ice-making chamber 1a, and the detection rod 5 is formed so as not to be deeply immersed in the ice-making chamber 1a, and is positioned so that the dehydration detector 7 does not operate in this state. The device main body 3 enters the ice-making state when the bite detector 8 comes into contact with the detection piece 6, and when dehydration is performed and the detection rod 5 enters the air vent hole 1b, the dehydration detector 7 or the detection piece A counter is installed near the ice tray 1 so that the ice tray 1 operates in contact with the ice tray 1.

The present invention has the above-described configuration, and the device main body 3 shifts to the ice-making state when the ice jam detector 8 operates, and when the ice is dehydrated, the dehydration detector 7 activates (this is located near the ice-making section 1). Install it.

Immediately after ice making is completed, the water tray 2 is moved downward by the motor to the dewatering position, but the arm 4 does not descend because the ice making compartment 1a of the ice tray 1 is filled with ice. Ice tray 1
Hot gas is supplied to the cooling pipe 9 of the evaporator on the top and heated, so the ice in the ice tray 1 gradually melts and immediately escapes from the ice tray 1. The arm 4 falls due to its own weight, the detection rod 5 sinks into the air vent hole 1b, and the detection piece 6 provided halfway through the arm 4 comes into contact with the dehydration detector 7, so dehydration is completed. Therefore, when the dehydration detector 7 is activated, the water amount 2 is increased by the action of an appropriate control circuit.
If ice is not stuck between the upper surface of the rising water tray 2 and the downward direction of the ice tray 1 due to defective deicing or failure to slide down, etc., the jamming detector 8 will be activated. It detects that it is OK to start the next water OJ production, and resumes ice production by activating the circulation pump, etc. However, for some reason, the ice tray 1
If all the trees have not fallen, when the water tray 27 is raised, the ice making section 1 and the water tray 2 may get caught in the tree, causing the water tray 1 to not rise to the predetermined position for ice making, and thus causing When the jamming detector 8 does not operate, it is detected that the wood has jammed, and an appropriate control circuit lowers the water tray 2 again, and this control circuit operates to start ice making [1+111 The ice is heated again by flowing water for a predetermined period of time, and after a period of time long enough for complete dehydration has elapsed, the water trays 2 are placed in a row to make ice.

By performing the following two operations consecutively, ice can be manufactured continuously.

In the first embodiment described above, the detection rod 5 is a single piece of wood, but a plurality of rods #S are provided, and the detection rods 5 are provided at appropriate positions of the ice tray 1. ], and since all the dehydration detectors 7 are installed in the same way as in the first step, it is possible to detect dehydration with higher accuracy by moving the water tray 2 to the upper position. It goes without saying that the detector '7.8 does not necessarily have to be a limit switch or microswitch that emits a signal with a single touch, and may be replaced with other detectors that use magnetism, light, etc.

As described above, this invention detects dehydration by using a detection rod that comes into direct contact with the wood of the ice cube tray. Since the time from start to start of the next ice making can be reduced to almost zero, ice making efficiency is improved and the temperature rise of the ice tray and compressed tuna can be reduced.
The effects are also significant in terms of device protection and energy conservation. Another advantage is that there is no need to install a relatively expensive temperature sensor in the ice cube tray, unlike conventional dehydration detection devices.

[Brief explanation of the drawing]

The drawings show an example of the present invention; FIG. 1 is an IE view, FIG. 2 is a plan view, and FIG. 3 is a side 1111 view showing the main parts. 1...Ice making 111j, 1a...Ice making chamber, 1b...
Air vent hole, 2...Water volume, 2a...Time IU axis, 3
... Dehydration detector body, 4... Naam, 5... Detector, 6... Detection piece, 7... Deicing detector, 8... Bite detector, 9... Cooling. tube.

Claims (1)

[Claims] An arm that is attached to the side of the ice tray and extends upward is swingably supported, and a detection rod that can freely appear and retract into the air vent hole of the ice tray is installed downward from the tip of the arm. A dehydration detection device equipped with a detector that detects an arm or its interlocking part when it is immersed in a hole.