JPH0681590B2 - Cooling storage device ozone injection method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an apparatus for cooling and storing food such as vegetables, meat and fresh fish with cooling water.

(B) Conventional technology For example, Japanese Utility Model Publication No. 56-12936 includes a water tank for storing frozen foods, a cooler, and an ozone generator, and a gas main and a plurality of air bubbles branching from the gas main are formed on the bottom surface of the water tank. A frozen food which is provided with a container and connects its main pipe to the outlet conduit of the ozone generator, sends ozone air from the ozone generator into the water tank, and sterilizes the frozen food stored in the water tank by this ozone. Is shown.

(C) Problems to be Solved by the Invention In the above-mentioned conventional technique, in order to completely sterilize the water in the tank, it is necessary to send ozone into the water tank before about 20 to 30 minutes before adding the frozen food. However, when this delivery operation is delayed, the sterilization of water in the tank is incomplete. In order to make the osmotic pressure of the frozen food equal to that of the water in the water tank, when salt is mixed in the water, the operation of the cooler is continued due to some trouble and the salt water in the water tank is cooled to 0 ° C or less. In this case, salt water does not freeze, but fresh water remaining in the bubble generator or the main pipe provided in the water tank freezes and ozone cannot be delivered into the water tank. The present invention aims to solve the above problems.

(D) Means for Solving the Problems In order to solve the above problems, the present invention provides a water storage tank, a cooler for cooling water stored in the water storage tank, and an opening in the water storage tank. In the cooling storage device including an ozone injection pipe for injecting ozone into the water, when the cooling storage device is activated, the cooling operation of the water in the water storage tank is started by the cooler, and the cooling operation is performed. The present invention provides a method for injecting ozone in a cooling storage device, in which ozone is injected into water from the ozone injection pipe simultaneously with the start of the above.

(E) Action When water is supplied to the water tank and the circulation pump is operated to cool the water in the water tank by exchanging heat with the cooler, the cooling storage device is activated and ozone is injected from the ozone injection pipe. It is injected into water, and the water that has entered the pipe is extruded by the ozone passing through the ozone injection pipe to fill the pipe with gas.

(F) Embodiment Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. FIG. 2 shows a side view of the cooling storage device (1), and FIG. 3 shows the same plan view. (2) is a water storage tank defined by a heat-insulating box opened upward, and is internally formed by a partition plate (3) so as to be divided into left and right main water tanks (4) and sub water tanks (5). Since food is stored in the main water tank (4), a net shelf (6) is arranged at the bottom. In the sub water tank (5), a screen (7) as a filter is installed horizontally below the upper end of the partition plate (3), and further below it is provided as a cooler included in the refrigeration cycle of the cooling device. The cooled cooling pipe (8) is arranged apart from the bottom of the water storage tank (2). Further, a draining board (10) is installed above the sub water tank (5) at the opening of the water storage tank (2). Reference numeral (12) is a unit box for accommodating an electric compressor (13) and a condenser (14) which form a refrigeration cycle of a cooling device, and a sterilizer (15) including an ozone generator, and a sub water tank (5). Side water tank (2) side, the cooling pipe (8) extends into the sub water tank (5) therefrom, and the ozone injection pipe (16) extending from the sterilizer (15). ) Also extends into the sub water tank (5) and opens near the opening of the suction pipe (20) at the bottom. The ozone injection pipe (16) is made of rubber or vinyl, for example, and has a diameter of about 1 cm. Box body (1
The upper surface of 2) is a flat surface and its height is the same as that of the drainage stand (10). As a result, the upper surface of the box body (12) can be used as a table. Also, drainer (10)
Is on the sub water tank (5), it is very easy to drain the food (17) after cooling, washing or thawing.

The water injected into the flood control layer (2) is mixed with salt to control the osmotic pressure when the food to be stored is meat or fresh fish, and about 1% salt solution for meat and 3.5% salt solution for fresh fish. To be done.
In addition, in the case of vegetables, it is still fresh water. The salt water (18) is sucked through the suction pipe (20) opened at the bottom of the sub water tank (5) by a pump (19), which will be described later, arranged in the box (12), and at this time, it is generated in the sterilizer (15). After being sterilized by ozone blown from the ozone injection pipe (16),
It is discharged into the main water tank (4) through a discharge pipe (21) opened at the bottom of the main water tank (4). The water level in the main water tank (4) is assumed to exceed the height of the partition plate (3) in advance, and the salt water (18) overflowed by this is filtered by the screen (7) and dropped into the sub water tank (5). It is stored and recirculated by being sucked again through the suction pipe (20). At this time, the water level in the sub water tank (5) is set to be higher than the cooling pipe (20), whereby the water is cooled, and for vegetables, for example, +5.
℃, 0 ℃ for meat, -2 ℃ for fresh fish. By cooling such food in the main water tank (4) with cold water, there is an effect of increasing the cooling rate of the core temperature. Also, when used for cleaning food, dust is filtered by the screen (7), so that clogging of the pump (19) and the like does not occur.

Since the salt water (18) contains the smell of food and fine debris that has not been filtered by the screen (7), it must be replaced. Therefore, in the present application, as shown in FIG. 4, the suction pipe (20) is connected to the pump (19). ) A conduit (52) branching from the conduit (51) is provided, and a normally closed drain valve (53) is installed in the middle of this conduit (52). That is, when the salt water (18) is discarded, the partition plate (3) is removed and the main water tank (4) and the sub water tank (5) are communicated with each other, and the drain valve (53) is opened to store the water tank (2). The water (18) therein flows down through the suction pipe (20) and the conduit (52) and is discharged from the discharge port (54).
Further, at this time, since the discharge pipe (21) is positioned above the conduits (51) (52) and the like, the water (18) in the discharge pipe (21) also flows backward through the pump (19) and the conduit (51). Since it is then discharged from the discharge port (54), sewage in each pipe can be discharged well.

The cooling pipe (8) is made of copper-nickel alloy, and the lead wire (30) is connected to the proper place as shown in FIG. Further, (31) is an electrode made of, for example, titanium, which is more excellent in corrosion resistance than the copper and nickel alloys, and is separated from the cooling pipe (8), and its lower end is at substantially the same height as the lower part of the cooling pipe (8). The electric current flows from the electrode (31) to the cooling pipe (8) in order to protect the cooling pipe (8) from corrosion.

Further, FIG. 1 is a schematic block diagram of the operation control device of the sterilizer (15), (40) the operation control unit of the cold salt water treatment device constituted by a microcomputer, (41) the operation control unit (40 ), The operation of the sterilizer (15) is controlled by an ON / OFF signal from the sterilizer controller (41). A sterilization switch (41S) is connected to the sterilization device control unit (41), and the sterilization device control unit (4S) is pressed by pressing the sterilization switch (41S).
The on / off signal output from 1) switches. In addition, the control signal from the operation control section (40) is sent to the compressor relay (42).
And the water feed pump relay (43) are respectively input, and the relays (42) and (43) control the energization of the compressor (13) and the water feed pump (19).

Hereinafter, the operation of the sterilization device (15) based on the operation of the operation control device will be described.

The cooling storage device is started by a preset time, a time calculated by the operation control unit (40) based on the water temperature in the water tank, or by the operation of a manual switch (not shown). At this time, the high level signal which is a start signal is given from the operation control unit (40) to the sterilizer control unit (41) at the time of start. This high level signal causes the sterilizer controller (4
1) operates and outputs an ON signal to the sterilizer (15). The sterilizer (15) starts operating when an ON signal is input, ozone is generated from the sterilizer (15), and ozone is injected from the ozone injection pipe (16) into the water in the water tank. Therefore, the water that has entered the ozone injection pipe (16) when the water is supplied to the water storage tank (2) is pushed out of the pipe by the ozone.

Further, at the time of start-up, a start-up signal is given from the operation control section (40) to the compressor relay (42) and the water feed pump relay (43), and the relays (42) and (43) operate to operate the compressor ( 13) and water pump (19) start operation. Then, with the operation of the compressor (13), the refrigerant flows through the cooling pipe (8), the water in the water storage tank is cooled, and the water temperature gradually decreases. Further, by operating the water supply pump (19), the water in the water tank is circulated and the water temperature is kept substantially uniform.

When a certain amount of time has passed since the cold storage device (1) was started and salt water was added to adjust the osmotic pressure to further immerse the fresh fish in the water storage tank and the compressor (13) continued to operate. The salt water temperature around the cooling pipe (8) falls below 0 ° C. Therefore, the salt water temperature around the ozone injection pipe (16) hanging near the cooling pipe (8) is also 0 ° C.
Lower. At this time, the water that has entered the ozone injection pipe (16) at the time of supplying water to the water storage tank (2) is pushed out by the ozone when the sterilization device (15) is started, and therefore the ozone injection pipe (16) This pipe will not be blocked due to freezing of water inside the pipe.

Also, after the cooling storage device (1) is started, for example, when the sterilization device (15) is operating, the sterilization switch (41S)
When is pressed, the output of the sterilizer control unit (41) is switched from the ON signal to the OFF signal, the operation of the sterilizer (15) is stopped, and the injection of ozone is stopped. Furthermore, sterilization equipment (15)
If the sterilization switch (41S) is pressed while the operation is stopped, the output of the sterilization device control unit (41) switches from the OFF signal to the ON signal, and the sterilization device (15) starts operation and ozone Injection is started. Furthermore, when stopping the operation of the cooling storage device (1), the operation control unit (40) sends a low level signal, which is a stop signal, to the sterilization device control unit (41).
Output to. Then, the sterilizer control unit (41) outputs an OFF signal to the sterilizer (15), the sterilizer (15) stops operating, and ozone injection is stopped. In addition, from the operation control section (40) to the compressor relay (42) and the water pump relay (4
The stop signal is given to 3) and each relay (42), (4
3) operates and both the compressor (13) and the water supply pump (19) stop operating.

After that, for example, when the cooling storage device (1) is started up on the next day, the sterilization device (15) starts operating similarly to the above operation, and ozone is injected into the water tank from the ozone injection pipe (16). The water that has entered the pipe (16) is pushed out by ozone.

Further, FIG. 5 is a flow chart showing the control operation of the sterilizer. For example, when the cooling storage device (1) is not operating by judging whether it is operating, the OFF signal of the sterilizing device (15) is output. It is output and the sterilizer (15) does not operate. Also, when the cooling storage device (1) is operating, this operation may be due to the activation of the cooling storage device (1), or the temperature of the salt water in the water tank after the activation may be constant, not due to activation. To determine if it is due to a thermocycle. When the operation of the cooling storage device (1) is started, the ON signal of the sterilization device (15) is output and the sterilization device (15) starts its operation. For this reason,
The water that has entered the ozone injection pipe (16) is pushed out into the water by ozone.

When the operation of the cooling storage device (1) is not the operation at startup, it is determined whether or not the sterilization switch (41S) has been pressed. Then, when the sterilization switch (41S) is pressed, it is next determined whether or not the sterilization device (15) is turned on.
At this time, when the sterilizer (15) is operating in the on state, an off signal of the sterilizer (15) is output and the sterilizer (15) is stopped. When the sterilizer (15) is stopped, an OFF signal of this sterilizer is output and the sterilizer (15) starts its operation. In addition, the sterilization switch (41
When S) is not pressed, the sterilizer (15) continues to operate or stop.

Therefore, when the cooling storage device (1) is started, the sterilization device (15) is started to operate, and the water in the water storage tank is cooled and the injection of ozone into the water is automatically started without any user operation. The water can be sufficiently sterilized by the time the temperature of the water is cooled to a predetermined value, and the ozone generated in the sterilizer (15) passes through the ozone injection pipe (16) and the water in the pipe (16) is discharged. Is pushed out and injected into the water in the water tank.
Therefore, even if the ambient temperature of the ozone injection pipe (16) becomes 0 ° C. or lower due to the cooling of the water or salt water in the water storage tank, there is no water in the pipe, so it does not freeze, and it is stored by cooling. When immersing food in the device (1), ozone can be reliably injected into the water or salt water in the water tank by operating the sterilization device (15).

(G) Effect of the Invention Since the present invention is the ozone injection method for the cooling storage device as described in the above embodiment, the cooling storage device is activated and the cooling operation of the water in the water storage tank is started by the cooler. At the same time, the ozone is automatically released from the ozone injection pipe extending into the water storage tank, so that the water that has entered the ozone injection pipe due to the release of ozone is pushed out to the ozone, and as a result, Even if, for example, salt water in the water tank is cooled and the ambient temperature of the ozone injection pipe becomes 0 ° C or lower, the water does not freeze in the ozone injection pipe, and ozone is arbitrarily injected into the water tank. Further, since the injection of ozone into the water storage tank starts with the activation of the cold storage device, the water or salt water in the water storage tank can be sufficiently sterilized before the food is immersed in the water storage tank.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, FIG. 1 is a schematic block diagram of an operation control device of a sterilizer, FIG. 2 is a side view of a cooling storage device, and FIG. 3 is a plan view of the same. FIG. 4 is a sectional view of the water tank, and FIG. 5 is a flow chart showing the control operation of the sterilizer. (1) ... Cooling storage device, (2) ... Water tank, (8) ...
… Cooling pipe, (16) …… Ozone injection pipe, (19)
...... Circulation pump.

Claims (1)

[Claims] 1. A cooling storage device comprising a water storage tank, a cooler for cooling water stored in the water storage tank, and an ozone injection pipe which is opened in the water storage tank and injects ozone into the water. In the above, when the cooling storage device is started, the cooling operation of the water in the water storage tank is started by the cooler, and at the same time when the cooling operation is started, ozone is injected into the water from the ozone injection pipe. Method for injecting ozone into a cooling storage device.