TWI668399B - Intelligent oxygen-free nitrogen storage cabinet - Google Patents

Abstract

The utility model relates to an intelligent oxygen-free nitrogen-filling fresh-keeping cabinet, which is installed in an enclosed space and comprises a fresh-keeping cabinet for storing foods, and the fresh-keeping cabinet is connected with a gas device through a connecting exhaust duct and an intake duct. The exhaust duct is provided with a first gas sensor capable of detecting the gas inside the fresh cabinet, and the first gas in the fresh cabinet is reacted by the input gas device to output a second gas, and the first gas is sensed The gas sensing data obtained by the detecting device is transmitted to a microcomputer control unit, and the gas device is driven to output the second gas in the air inlet conduit to automatically control the first gas concentration and the second gas concentration in the freshening cabinet. .

Description

Intelligent oxygen-free nitrogen storage cabinet

The invention relates to an intelligent oxygen-free nitrogen-filling fresh-keeping cabinet, which is composed of a fresh-keeping cabinet connected to a gas inlet device through an exhaust duct and an air inlet duct, wherein the gas device is provided with a microcomputer control unit, which can be obtained by sensing The gas sensing data automatically adjusts the gas concentration input into the interior of the fresh-keeping cabinet to improve the low-temperature preservation effect of the food in the fresh-keeping cabinet.

At present, most of the food low-temperature logistics products are introduced or extended by the introduction of Modified Atmosphere Packaging (MAP) technology to increase the shelf life of the food, thereby causing food deterioration. It is caused by fat in food. When fat reacts with oxygen in the air to cause oxidation, it will cause rancidity of oil and fat, and also produce harmful substances, which is a considerable threat to the quality and safety of food; Therefore, the preservation of food on the consumer side, such as the restaurant "professional kitchen", the family "refrigerator" can still meet the basic requirements of anaerobic and sterilized, is also an important link.

At present, the market is roughly divided into ozone (O3), ultraviolet, vacuum, etc., if it is used in the above restaurant or home environment, the number of switching will be quite frequent, for example: open vacuum storage cabinet At the time, the original internal vacuum space was destroyed. When the vacuum storage cabinet was closed, the internal unit would start to operate to evacuate the air in its internal space until a vacuum was formed. The process was not fast and time consuming, and the long-term cost was seen. Energy and costs will be considerable.

In summary, there is still room for improvement and inconvenience, so the inventor is aware of the above problems and years of experience in research and development, and is interested in the inconvenience and problems that can be improved. In the spirit of excellence, the present invention has finally been proposed to provide a rapid preservation and easy installation, and to maintain a long-term application, which can effectively improve the above problems.

The invention relates to an intelligent oxygen-free nitrogen-filling fresh-keeping cabinet. In addition to the characteristics of convenient installation and use, the invention has an intelligent control function, and the food is in an anti-oxidation and antibacterial environment by supplementing nitrogen gas, thereby prolonging the safe storage time, so that Food can be more flexible in restocking and ordering time, and its main technical purpose is to provide low-cost, stable and continuous nitrogen use, and to provide unmanned nitrogen for continuous supply.

The intelligent oxygen-free nitrogen-filled fresh-keeping cabinet of the present invention mainly comprises a fresh-keeping cabinet for storing and storing food, and a gas device having an exhaust duct and an intake duct connected to the fresh-keeping cabinet, and the electromagnetic type The gas device can input the first gas in the fresh-keeping cabinet, and after the reaction, output a second gas into the fresh-keeping cabinet, wherein the exhaust gas conduit is provided with a first gas sensor, which can be used for detecting the fresh-keeping cabinet Gas, and a gas sensing data, the gas sensing data includes a first gas concentration and a second gas concentration, and the gas sensing data is transmitted to a microcomputer control unit disposed in the electromagnetic gas device, The microcomputer control unit can drive the gas device to output an appropriate amount of the second gas to the intake duct according to the gas sensing data, thereby automatically controlling the first gas concentration and the second gas concentration in the fresh cabinet.

Accordingly, the intelligent oxygen-free nitrogen-filled fresh-keeping cabinet of the present invention drives the gas device through the microcomputer control unit, so that the first gas and the second gas in the fresh-keeping cabinet can be adjusted according to the needs of the user, so that the fresh-keeping cabinet can Automatically achieve low temperature and long-term operation without interruption.

(10) ‧‧‧ gas installations

(11)‧‧‧Exhaust duct

(111)‧‧‧First gas

(12) ‧‧‧intake conduit

(121)‧‧‧Second gas

(20)‧‧‧Microcomputer Control Unit

(201)‧‧‧ Door opening and closing sensor

(202)‧‧‧First gas sensor

(2021) ‧ ‧ gas sensing data

(2022) ‧‧‧First gas concentration

(2023) ‧‧‧second gas concentration

(203)‧‧‧Compressor Sensor

(204)‧‧‧Filter sensor

(205)‧‧‧Second gas sensor

(21)‧‧‧Compressors

(22)‧‧‧First gas storage tank

(23)‧‧‧Second gas storage tank

(24)‧‧‧Nitrogen bottles

(30) ‧ ‧ fresh cabinet

(40) ‧ ‧ enclosed space

[Fig. 1] is a flow chart of a preferred embodiment of the present invention.

[Fig. 2] is a system block diagram of a microcomputer control unit in accordance with a preferred embodiment of the present invention.

[Fig. 3] is a system block diagram of gas sensing data according to a preferred embodiment of the present invention.

[Fig. 4] is a system block diagram of an automatic detection operation of a preferred embodiment of the present invention.

[Fig. 5] is a block diagram of a system for automatic detection operation during a rest period according to a preferred embodiment of the present invention.

The invention relates to an intelligent oxygen-free nitrogen-filling fresh-keeping cabinet, which is mainly installed in an enclosed space (40). The closed space (40) is substantially below a refrigerating temperature of 7 ° C or a freezing temperature of -18 ° C or less, and the actual Often used in refrigerators, truck refrigerators, etc., can also be applied to general ambient temperature environment, please refer to Figure 1~4, as shown in the figure, the structure mainly includes a fresh cabinet (30), the fresh cabinet (30) mainly For providing food storage, and the fresh-keeping cabinet (30) has a door or a drawer, or other equivalent design for opening and closing, and a joint that can be connected to the outside, the fresh-keeping cabinet (30) is installed on In the enclosed space (40); a gas device (10) disposed outside the enclosed space (40), the gas device (10) having an exhaust conduit (11) and an intake conduit (12) through the foregoing The connection is connected to the fresh cabinet (30), and the fresh-keeping cabinet is located at the joint A first gas (111) in the cabinet (30) is input to the gas device (10) through the exhaust conduit (11) for reaction, and then a second gas (121) is output through the inlet conduit (12). Between the exhaust duct (11) and the gas device (10), a first gas sensor (202) for detecting gas in the fresh cabinet (30) is provided, and the first gas is The gas sensing data (2021) obtained by the sensor (202) includes: a first gas concentration (2022) and a second gas concentration (2023). In a preferred embodiment of the present invention, the general air is mainly caused by 78% nitrogen, 21% oxygen, and a mixture of 1% rare gas and impurities, in order to extend and preserve the freshness of the food, mainly by increasing nitrogen and reducing oxygen, and the first gas in the fresh cabinet (30) 111) is an oxygen gas, and the second gas (121) is a nitrogen gas; and a microcomputer control unit (20) electrically connected to the gas device (10) and the first gas sensor (202), After the microcomputer control unit (20) determines the gas sensing data (2021), the gas device (10) can be further driven to the air inlet conduit (12). 1) The amount of the second gas (121) outputted is automatically controlled to control the first gas concentration (2022) and the second gas concentration (2023) in the fresh cabinet (30).

The gas device (10) in the present invention is mainly provided with: a microcomputer control unit (20), a compressor (21), a first gas storage tank (22), a second gas storage tank (23), and a nitrogen bottle (24); The compressor (21) has an input end and an output end, and the compressor (21) is electrically connected to the microcomputer control unit (20), and the input end is used to connect the exhaust duct (11), and the output end And connecting to the first gas storage tank (22), and the pipeline between the first gas storage tank (22) and the second gas storage tank (23) is matched with the valve seat to form a check valve in a single direction, and The second gas storage tank (23) connects the air inlet duct (12) to the fresh-keeping cabinet (30), and the second gas storage tank (23) is further connected with a nitrogen bottle (24); Please refer to Figure 2:

1. The door opening and closing sensor (201) is disposed in the fresh keeping cabinet (30) for detecting the state record of opening and closing of the fresh keeping cabinet (30).

2. The first gas sensor (202) is disposed between the exhaust conduit (11) and the gas device (10) for detecting the first gas (111) inside the fresh cabinet (30) and simultaneously transmitting to The microcomputer control unit (20) performs calculations.

3. The compressor sensor (204) is provided on the compressor (21) for detecting the operating state of the compressor (21), such as voltage, operating temperature, and the like.

4. The filter sensor (204) is disposed in the first gas storage tank (22). The first gas storage tank (22) is generally a nitrogen molecular sieve capable of reacting the first gas (111) into the second gas. In a consumable of (121), the filter sensor (204) records the amount of the second gas (121) after the reaction in addition to the wear state of the consumable.

5. The second gas sensor (205) is disposed in the second gas storage tank (23) for recording the amount of the second gas (121) in the second gas storage tank (23) and the nitrogen gas bottle ( 24) The internal storage, if the nitrogen bottle (24) is used normally, it can be replaced once every two years.

Each of the foregoing sensors is electrically connected to the microcomputer control unit (20), and the connection manner is wired or wirelessly connected, and is not limited.

Please refer to Figure 4 as shown in Figure 4. Under normal use, the storage space of the fresh-keeping cabinet (30) is fixed at the time of installation. When the fresh-keeping cabinet (30) is opened and closed, the door is triggered to open and close. The sensor (201) transmits the time difference data of its opening to closing to the microcomputer control unit (20) for calculation, and the calculated data will simultaneously drive the compressor (21) to start pumping from the exhaust duct (11), and At this time, the first gas sensor (202) also starts to monitor the amount of pumping, and the first gas (111) drawn by the compressor (21). After cooling and treatment with the nitrogen-producing molecular sieve in the first gas storage tank (22) (this treatment is a common method for heating and filtering impurities and gases other than nitrogen, those who are generally knowledgeable in the field should understand, and therefore no longer In the rumor, a part of the second gas (121) is introduced into the second gas storage tank (23) through a unidirectional pipeline, and the second gas stored in the second gas storage tank (23) (121) ) is monitored by the second gas sensor (205), and then the gas sensing data (2021) calculated by the microcomputer control unit (20) allows the second gas storage tank (23) to pass through the intake conduit ( 12) outputting the predicted second gas (121) into the fresh-keeping cabinet (30), the step of which can be completed from the start to the end of the slowest time of 2 minutes; and the second gas storage tank (23) through the intake air During the actual output application, the conduit (12) is additionally provided with a rotary valve and a pipeline connecting the first gas storage tank (22) and the second gas storage tank (23), by switching the functions of the intake and exhaust gases. The second gas (121) and the first gas (111) can be simultaneously guided to flow outside the gas device (10).

As in the foregoing general use case, when the second gas (121) in the second gas storage tank (23) is insufficient, the second gas sensor (205) returns the relevant signal to the microcomputer control unit (20). When receiving the signal that the reserve is insufficient, the nitrogen bottle (24) provided in the gas device (10) is further opened for replenishment into the second gas storage tank (23), so that the fresh storage cabinet (30) The required second gas (121) is replenished, and after the replenishing action is completed, the nitrogen bottle (24) is blocked and the supply is stopped to ensure its safety. The setting of the nitrogen bottle (24) can help the first The second gas (121) in the second gas storage tank (23) maintains a normal operation amount and accelerates the process of replenishing the second gas (121) by the fresh cabinet (30).

Please refer to the operation flow during the rest period as shown in Figure 5. Except that the door opening and closing sensor (201) is not driven, the other processes are basically the same as the normal use conditions mentioned above. The human-machine interface connected to the microcomputer control unit (20) performs the operation cycle of seconds, minutes, hours, days, and months to optimize the supplement of the second gas (121) inside the fresh-keeping cabinet (30). Let this Inventing the intelligent oxygen-free nitrogen storage cabinet to maintain a long-term anaerobic state; if the first gas (111) content in the fresh-keeping cabinet (30) is too high, a warning will be issued through the microcomputer control unit (20) .

In summary, the intelligent oxygen-free nitrogen-filled fresh-keeping cabinet of the present invention is equipped with a gas device (10) provided with a microcomputer control unit (20), and an exhaust duct (11) for use with a hot plug. The air inlet duct (12) is connected to the air inlet duct (12), and the first gas sensor (202) is transmitted to the microcomputer control unit (20) to calculate the gas sensing data (2021), and the driving is further provided on the gas device (20). The second gas storage tank (23) in 10) outputs the second gas (121) to the inside of the fresh-keeping cabinet (30), thereby automatically controlling the first gas concentration (2022) and the second gas in the fresh-keeping cabinet (30). The concentration (2023), and the nitrogen bottle (24) provided inside the gas device (10), in addition to ensuring the second gas (23) storage, can accelerate the process of outputting the second gas (121), so that the present invention The intelligent oxygen-free nitrogen storage cabinet can achieve low temperature and long-term operation without interruption. Although the embodiments of the present invention have been described above, it should be understood that various changes and modifications can be made to the embodiment without departing from the The scope of the invention as set forth in the appended claims.

Claims (5)

The utility model relates to an intelligent oxygen-free nitrogen-filling fresh-keeping cabinet, which is installed and used in an enclosed space, comprising: a fresh-keeping cabinet for storing and storing food; a gas device having an exhaust duct and an intake duct communicating with the fresh-keeping cabinet, A first gas in the fresh-keeping cabinet is outputted into a second gas by inputting the gas device, and a first gas sensor is disposed between the exhaust conduit and the gas device for detecting the Preserving the gas of the cabinet and obtaining a gas sensing data, the gas sensing data comprising a first gas concentration and a second gas concentration; and a microcomputer control unit electrically connecting the gas device and the first gas sense And a first gas storage tank and a second gas storage tank, wherein the first gas storage tank and the second gas storage tank are connected to the gas device, and the same is provided by the gas device a first gas and the second gas, and the second gas storage tank further includes a nitrogen gas bottle disposed in the gas device, and the nitrogen gas bottle is in communication with the second gas storage tank; Microcomputer control unit based on the gas Sensor data, which in turn drives the gas conduit means to the output of the gas into the second gas to reach a first and a second gas concentration of the fresh gas concentration automatic control cabinet. According to the intelligent oxygen-free nitrogen-filled fresh-keeping cabinet according to the first aspect of the patent application, the first gas storage tank further comprises: a filter sensor disposed outside the first gas storage tank for monitoring the first An amount of gas entering, and the filter sensor is electrically coupled to the microcomputer control unit. According to the intelligent oxygen-free nitrogen-filled fresh-keeping cabinet according to the first aspect of the patent application, the second gas storage tank further comprises: a second gas sensor disposed outside the second gas storage tank for monitoring The output of the second gas from the second gas storage tank to the intake duct, and the second gas sensor is electrically connected to the microcomputer control unit. The intelligent oxygen-free nitrogen-filled fresh-keeping cabinet according to claim 1, further comprising: a compressor disposed in the gas device, wherein the compressor is provided with a compressor sensor, the pressure The compressor sensor is configured to monitor a driving current and an operating temperature of the compressor, and the compressor sensor is electrically connected to the microcomputer control unit. The intelligent oxygen-free nitrogen-filled fresh-keeping cabinet according to the first aspect of the patent application includes: a door opening and closing sensor, which is disposed in the fresh-keeping cabinet for sensing switch operation, and the door is opened and closed The sensor is electrically connected to the microcomputer control unit.