KR102329240B1 - Mixing gas injection device for packing box - Google Patents

Abstract

The present invention relates to a packaging container mixed gas injector for injecting a mixed gas into the packaging container, comprising: a plurality of gas storage tanks (120, 120a, 120b) in which different gases are stored; a storage unit 141 storing the type of mixed gas for each food accommodated in the packaging container, the mixing ratio of the mixed gas, and the injection time of the mixed gas; an input unit 140 for receiving food contained in the packaging container; a plurality of solenoid valves (150, 160, 170) coupled to each of the plurality of gas storage tanks (120, 120a, 120b) to discharge the gas of the gas storage tanks (120, 120a, 120b); a gas mixing tank 180 connected to the plurality of gas storage tanks 120, 120a, 120b and each of the gas supply pipes 123, 123a, 123b to mix a plurality of gases; a vacuum pump 190 provided on one side of the gas mixing tank 180 to suck and discharge the air inside the packaging container P by vacuum pressure; Each gas is supplied to the gas mixing tank 180 from the plurality of gas storage tanks 120, 120a, 120b at a mixing ratio of the mixed gas corresponding to the food input through the input unit 140, and then mixed and mixed into the packaging container It is characterized in that it comprises a control unit 200 for controlling the solenoid valves (150, 160, 170) to be supplied to (P).

Description

Mixed gas injector for packaging container {MIXING GAS INJECTION DEVICE FOR PACKING BOX}

The present invention relates to a packaging container mixed gas injector, and more particularly, to a packaging container mixed gas injector capable of mixing and supplying a mixed gas suitable for food contained in a packaging container at an accurate concentration.

For the purpose of storing food for a long time, a low temperature storage method, a wrap method, a vacuum packaging method, a modified atmosphere packaging method (MAP), etc. in which a gas such as nitrogen is injected are used.

Among them, in relation to the gas replacement packaging technology, Utility Model Registration No. 20-0213394 "Vacuum packaging machine capable of injecting nitrogen gas" has been disclosed.

As disclosed, the conventional gas replacement packaging method prevents deterioration of food due to oxidation by injecting nitrogen gas into the packaging material.

However, since the conventional gas replacement packaging method is a form of simply filling nitrogen, there is a limit that oxidation cannot be prevented properly when applied to various foods, particularly broad-leaved vegetables or fruits such as strawberries or tomatoes.

In addition, the conventional gas replacement packaging method is applied only to small packaging containers, and there is a limitation in that it is difficult to accurately set the injection amount of gas in large packaging containers.

An object of the present invention is to solve the above-mentioned problems, and to provide a packaging container mixed gas injector that allows food to be kept fresh for a long time by injecting a mixed gas mixed with a plurality of gases in a standard ratio according to each food into a packaging material will do

Another object of the present invention is to provide a packaging container mixed gas injector capable of injecting an accurate amount of mixed gas even into a large packaging container.

The above objects and various advantages of the present invention will become more apparent from preferred embodiments of the present invention by those skilled in the art.

The object of the present invention can be achieved by a packaging container mixed gas injector for injecting a mixed gas into the packaging container. a plurality of gas storage tanks (120, 120a, 120b) in which different gases are stored; a storage unit 141 storing the type of mixed gas for each food accommodated in the packaging container, the mixing ratio of the mixed gas, and the injection time of the mixed gas; an input unit 140 for receiving food contained in the packaging container; a plurality of solenoid valves (150, 160, 170) coupled to each of the plurality of gas storage tanks (120, 120a, 120b) to discharge the gas of the gas storage tanks (120, 120a, 120b); a gas mixing tank 180 connected to the plurality of gas storage tanks 120, 120a, 120b and each of the gas supply pipes 123, 123a, 123b to mix a plurality of gases; a vacuum pump 190 provided on one side of the gas mixing tank 180 to suck and discharge the air inside the packaging container P by vacuum pressure; Each gas is supplied to the gas mixing tank 180 from the plurality of gas storage tanks 120, 120a, 120b at a mixing ratio of the mixed gas corresponding to the food input through the input unit 140, and then mixed and mixed into the packaging container It is characterized in that it comprises a control unit 200 for controlling the solenoid valves (150, 160, 170) to be supplied to (P).

According to one embodiment, the plurality of gas storage tanks (120, 120a, 120b) is provided as a CO ₂ gas storage tank, N ₂ gas storage tank, O ₂ gas storage tank, each of the gas storage tanks (120, 120a, 120b) and the A pressure gauge and a flow meter may be coupled between the solenoid valves 150, 160, and 170 of the .

According to an embodiment, a gas injection pipe 183 extending from the gas mixing tank 180 and injecting the mixed gas into the packaging container; Further comprising a discharge valve 181 provided in the gas injection pipe 183 to control the movement of the mixed gas through the gas injection pipe 183, the control unit 200 to the vacuum pump (190) When all the air inside the packaging container (P) is discharged by this, the discharge valve 181 is opened to inject the mixed gas into the packaging container.

The packaging container mixed gas injector according to the present invention sets the mixing ratio of the mixed gas that can keep each food fresh for the longest through repeated experiments, and when only the type of food is selected through the input unit, each The gases are automatically mixed and injected into the packaging container.

Accordingly, it is possible to inject an optimal mixed gas suitable for each food, and it is possible to keep the food fresh for a long period of time.

In addition, since the injection time of the mixed gas is automatically set according to the capacity of the large packaging container, there is an advantage that it can be used regardless of the size of the packaging container.

In addition, since the mixed gas is injected after the air inside the packaging container is discharged by vacuum pressure, there is no fear that the mixed gas and air are mixed.

1 is a perspective view showing the configuration of a packaging container mixed gas injector according to the present invention;
2 is an exemplary view showing the configuration of the input unit of the packaging container mixed gas injector according to the present invention;
3 is a block diagram showing the control flow of the packaging container mixed gas injector according to the present invention;
4 is a front view showing an enlarged configuration of the gas injection control box of the packaging container mixed gas injector according to the present invention;
5 is an exemplary view illustrating a process of injecting a mixed gas using a packaging container mixed gas injector according to the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shape of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. Detailed descriptions of well-known functions and configurations determined to unnecessarily obscure the gist of the present invention will be omitted.

1 is a perspective view showing the configuration of a packaging container mixed gas injector 100 according to the present invention.

As shown, the packaging container mixed gas injector 100 according to the present invention includes a storage tank support 110 supporting a plurality of gas storage tanks 120, 120a, and 120b, and a plurality of gas storage tanks loaded on the storage tank support 110 ( 120, 120a, 120b), the input unit 140 for receiving input from the user the type of food accommodated in the packaging container (P) into which the mixed gas (G) is to be put and the size of the packaging container (P), and a plurality of gas storage tanks ( A plurality of solenoid valves 150, 160, 170 for controlling whether or not gas is supplied to 120, 120a, 120b, and a gas mixing tank 180 in which the gases discharged from the plurality of gas storage tanks 120, 120a, 120b are mixed to form a mixed gas; , a vacuum pump 190 for discharging the air inside the packaging container (P), and solenoid valves (150, 160, 170) so that a plurality of gases are mixed and supplied to the packaging container (P) according to the type of food input from the input unit 140. It includes a control unit 200 to control.

A plurality of gas storage tanks (120, 120a, 120b) is CO ₂ The stored first gas storage tank 120, O ₂ The second gas storage tank (120a) _{is stored, and N 2 It} includes a third gas storage tank (120b) is stored. In the present invention, _{since only three gases of CO 2,} O _{2, and} N ₂ are mixed and used, only three gas storage tanks are provided, but a gas storage tank suitable for mixing four or more gases is provided.

On/off valves 121, 121a, and 121b and gas supply pipes 123, 123a, and 123b are coupled to each of the gas storage tanks 120, 120a, and 120b, respectively.

Here, the packaging object to be packaged in the packaging container (P) of the present invention is vegetables including vegetables and fruits such as strawberries.

The packaging container mixed gas injector 100 of the present invention injects an optimal mixed gas capable of keeping food fresh into the packaging container (P). For this, the mixing ratio and injection time of the mixed gas suitable for each food are investigated through multiple experiments.

For example, in order to find the optimal mixed concentration suitable for cherry tomatoes and strawberries, treatment concentration, concentration ratio (CO ₂ : O ₂ : N ₂ ), treatment time (12, 24, 48 hours), storage period (up to 15-20 hours) 1) according to the experiment was performed. In addition, the shelf life is set by analyzing the quality and appearance sensory evaluation, hardness, sugar acidity, etc.

In order to identify the concentration of mixed gas suitable for each food, the respiration rate and ethylene generation amount of products processed and stored for each mixed gas concentration are measured by GC to analyze physiological characteristics, and external sensory evaluation that affects quality, hardness, sugar acidity, etc. to evaluate the quality.

The mixing ratio and injection time of the mixed gas for each food determined through these experiments are stored in a database in the storage unit 141 .

The gas injection control box 130 is provided to be spaced apart from the storage tank support 110 , and mixes each gas stored in the plurality of gas storage tanks 120 , 120a and 120b at a predetermined ratio and supplies it to the packaging container P .

A door 131 is provided in the gas injection control box 130 , and an input unit 140 is provided in the door 131 . Inside the gas injection control box 130, a plurality of solenoid valves (150, 160, 170) for controlling the discharge of the gas of each gas storage tank (120, 120a, 120b), and a plurality of pressure gauges (151, 161, 171) for controlling the discharge pressure of each gas and , a plurality of flow meters (153, 163, 173) for adjusting the discharge flow rate of each gas is provided.

The input unit 140 is provided on the outside of the door 131 to receive the type of food to be packaged in the packaging container P from the user.

FIG. 2A is an exemplary diagram illustrating an example of receiving the type of food through the input unit 140 . As shown, the name of each food stored in the storage unit 141 is displayed on the input unit 140 , and the user selects the type of food to be accommodated in the packaging container P among them. That is, you can choose any one of green vegetables, chicory (red chicory), tomatoes, spinach (green mustard greens), and salad.

When one is selected in this way, the concentration and injection time of the mixed gas for each food stored in the storage unit 141 are automatically displayed as shown in FIG. The gas injection is carried out at the concentration.

Here, when the desired food is not displayed on the input unit 140 , the user selects user designation and manually inputs the desired concentration for each gas as shown in FIG. 2C .

Meanwhile, although not shown in the drawing, the size of the packaging container P may be input together in the input unit 140 . As an example, the packaging container can be selected on a corrugated cardboard box basis or on a pallet basis (1,100mm × 1,100mm).

3 and 4 are a block diagram and a front view showing the internal components of the gas injection control box 130. As shown, the first solenoid valve 150 is connected to the first gas supply pipe 123, the second solenoid valve 160 is connected to the second gas supply pipe 123a, and the third solenoid valve 170 is It is connected to the third gas supply pipe (123b).

A first pressure gauge 151 and a first flow meter 153 are provided in the path of the first gas supply pipe 123 , and the pressure and flow rate of _{CO 2 supplied from the first gas storage tank 120 to the gas injection pipe 183 .} is adjusted to the set pressure and flow rate. Similarly, a second pressure gauge 161 and a second flow meter 163 are provided in the path of the second gas supply pipe 123a _{to adjust the pressure and flow rate of N 2} , and the third gas supply pipe 123b is provided in the path of the third gas supply pipe 123b. A pressure gauge and a third flow meter 173 are provided to control the pressure and flow rate of _{O 2 .}

The first solenoid valve 150 , the second solenoid valve 160 , and the third solenoid valve 170 are opened and closed according to the control signal of the controller 200 , and each gas is supplied to the gas mixing tank 180 . At this time, the three solenoid valves 150 , 160 , 170 may be sequentially driven or driven simultaneously.

The packaging container mixed gas injector 100 of the present invention uses an amplifier (not shown) to accurately control the flow rate according to _{each mixed gas composition ratio (CO 2} : O ₂ : N _{2 ). A plurality of solenoid valves (150, 160, 170)} Each gas storage tank (120, 120a, 120b) is designed to be opened and closed with a furnace, and N ₂ used a lot in the mixed gas composition ratio is 20L/min, CO ₂ is 10L/min, and O ₂ used in a small amount is 5L/min. The flow rate according to the composition ratio of the three gases is continuously supplied.

The gas mixing tank 180 is connected to each of the gas supply pipes 123 , 123a , and 123b , and the gas supplied from the respective gas storage tanks 120 , 120a and 120b is received and mixed together. A gas injection pipe 183 extending to the outside of the gas injection control box 130 is coupled to the gas mixing tank 180 . The gas injection pipe 183 is coupled to the gas inlet (not shown) side of the packaging container P to supply the mixed gas G therein.

The gas injection pipe 183 is provided with a discharge valve 181 for controlling the supply of the mixed gas of the gas mixing tank 180 to the packaging container (P).

The vacuum pump 190 discharges the air in the packaging container P, and applies suction pressure so that the mixed gas G accommodated in the gas mixing tank 180 is supplied to the packaging container. The vacuum pump 190 is connected to an air intake pipe 193 and an air exhaust pipe 191, respectively.

The air suction pipe 193 is coupled to the packaging container (P) to suck the air (A) remaining in the packaging container (P). The air discharge pipe 191 discharges the air (A) sucked through the air suction pipe 193 to the outside.

The packaging container P from which the internal air is discharged by the vacuum pump 190 is in a vacuum state. When the discharge valve 181 is opened in this state, a relatively high-pressure mixed gas (G) may be supplied to the inside of the packaging container (P).

The controller 200 mixes the gases in each gas storage tank 120, 120a, and 120b at an optimum gas mixing ratio corresponding to the food input by the user through the input unit 140 so that the gases can be mixed and injected into the packaging container P. Control the configurations.

The control unit 200 sets an injection time corresponding to the food input through the input unit 140 and the food stored in the storage unit 141 according to the size of the packaging container in the mixed gas ratio to the packaging container, and sets the set mixed gas A plurality of solenoid valves (150, 160, 170) are controlled so that the gases of each gas storage tank (120, 120a, 120b) are supplied to the packaging container (P) at the ratio and injection time.

At this time, each pressure gauge (151 161 171) and the respective flow meters (153 163 173) coupled to the respective solenoid valves (150 160 170) have a predetermined pressure and a set flow rate of CO _2, N _2, O ₂ gas pressure to be supplied to the gas mixing chamber 180 and adjust the flow rate.

A process of using the packaging container mixed gas injector 100 according to the present invention having such a configuration will be described with reference to FIGS. 1 to 5 .

The user arranges the packaging container (P) next to the gas injection control box 130 as shown in FIG. 1, and couples the gas injection tube 183 and the air intake tube 193 to the packaging container P, respectively.

Then, as shown in (a) of FIG. 2 , the type of food accommodated in the packaging container P is selected through the input unit 140 . When selecting the type of food, the control section so that also the respective gas-specific mixing concentration and injection time is displayed, as shown mixed concentration and injection time of CO _2, N _2, and O ₂ is supplied as shown in 2 (b) ( 200) controls each solenoid valve (150, 160, 170).

4 and 5 , the first solenoid valve 150 is opened and the CO ₂ gas is supplied to the gas mixing tank 180 through the first gas supply pipe 123 . At this time, the first pressure gauge 151 and the first flow meter 153 coupled to the first gas supply pipe 123 control the supply of the CO ₂ gas in a state in which the pressure and flow rate are constantly maintained at set values.

In the same manner, N ₂ , O ₂ gases are respectively supplied to the gas mixing tank 180 . When the three types of gases are mixed in the gas mixing tank 180 and the mixed gas is formed, the control unit 200 drives the vacuum pump 190 with the discharge valve 181 closed to air inside the packaging container (P). (A) is sucked through the air intake pipe (193).

After all the air (A) inside the packaging container (P) is discharged through the air suction pipe (193), the control unit 200 opens the discharge valve (181). Since the pressure inside the packaging container P is low, the mixed gas G of the gas mixing tank 180 moves into the packaging container P through the gas injection pipe 183 and is filled.

When the filling of the mixed gas (G) is completed, the gas injection pipe 183 and the air suction pipe 193 are removed and sealed.

As described above, the mixed gas injector for the packaging container according to the present invention sets the mixing ratio of the mixed gas that can keep each food fresh for the longest through repeated experiments, and selects only the type of food through the input unit. Each gas is automatically mixed at a mixing ratio of

Accordingly, it is possible to inject an optimal mixed gas suitable for each food, and it is possible to keep the food fresh for a long period of time.

In addition, since the injection time of the mixed gas is automatically set according to the capacity of the large packaging container, there is an advantage that it can be used regardless of the size of the packaging container.

In addition, since the mixed gas is injected after the air inside the packaging container is discharged by vacuum pressure, there is no fear that the mixed gas and air are mixed.

The embodiments of the packaging container mixed gas injector of the present invention described above are merely exemplary, and those of ordinary skill in the art to which the present invention pertains can make various modifications and equivalent other embodiments therefrom. You will know well. Therefore, it will be well understood that the present invention is not limited to the form mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims.

100: packaging container mixed gas injector 110: storage tank support
120: first gas storage tank 120a: second gas storage tank
120b: third gas storage tank 121: first on-off valve
121a: second on-off valve 121b: third on-off valve
123: first gas supply pipe 123a: second gas supply pipe
123b: third gas supply pipe 130: gas injection control box
131: door 140: input unit
141: storage 150: first solenoid valve
151: first pressure gauge 153: first flow gauge
160: second solenoid valve 161: second pressure gauge
163: second flow meter 170: third solenoid valve
171: third pressure gauge 173: third flow gauge
180: gas mixing tank 181: discharge valve
183: gas injection pipe 190: vacuum pump
191: air exhaust pipe 193: air intake pipe
200: control unit
A: Air
G: mixed gas
P : Packaging container

Claims (3)

In the large packaging container mixed gas injector that injects the mixed gas into the large packaging container (P),
a plurality of gas storage tanks (120, 120a, 120b) in which different gases are stored;
a storage unit 141 for storing the type of mixed gas for each food accommodated in the packaging container (P), a mixing ratio of the mixed gas, and an injection time of the mixed gas;
an input unit 140 for inputting the type of food accommodated in the packaging container (P) and the size of the packaging container (P);
a plurality of solenoid valves (150, 160, 170) coupled to each of the plurality of gas storage tanks (120, 120a, 120b) to discharge the gas of the gas storage tanks (120, 120a, 120b);
a gas mixing tank 180 connected to the plurality of gas storage tanks 120, 120a, 120b and each of the gas supply pipes 123, 123a, 123b to mix a plurality of gases;
a vacuum pump 190 provided on one side of the gas mixing tank 180 to suck and discharge the air inside the packaging container P by vacuum pressure;
Each gas is supplied to the gas mixing tank 180 from the plurality of gas storage tanks 120, 120a, 120b at a mixing ratio of the mixed gas corresponding to the food input through the input unit 140, and then mixed and mixed into the packaging container Includes a control unit 200 for controlling the solenoid valve (150, 160, 170) so as to be supplied to (P),
a gas injection pipe 183 extending from the gas mixing tank 180 and injecting the mixed gas into the packaging container P;
Further comprising a discharge valve 181 provided in the gas injection pipe 183 to control the movement of the mixed gas through the gas injection pipe 183,
When all the air inside the packaging container P is discharged by the vacuum pump 190, the control unit 200 opens the discharge valve 181 to inject the mixed gas into the packaging container P. , A large-sized packaging container mixed gas injector, characterized in that the injection is performed at an injection time set according to the size of the packaging container (P).
According to claim 1,
The plurality of gas storage tanks (120, 120a, 120b) are provided as a CO ₂ gas storage tank, a N ₂ gas storage tank, and an O ₂ gas storage tank,
A large package container mixed gas injector, characterized in that a pressure gauge and a flow meter are respectively coupled between the respective gas storage tanks (120, 120a, 120b) and the respective solenoid valves (150, 160, 170).
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