CN108617766B - Fruit and vegetable humidifying device and method - Google Patents
Fruit and vegetable humidifying device and method Download PDFInfo
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- CN108617766B CN108617766B CN201810278996.0A CN201810278996A CN108617766B CN 108617766 B CN108617766 B CN 108617766B CN 201810278996 A CN201810278996 A CN 201810278996A CN 108617766 B CN108617766 B CN 108617766B
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/153—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of liquids or solids
- A23B7/158—Apparatus for preserving using liquids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- Automation & Control Theory (AREA)
- Storage Of Fruits Or Vegetables (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention discloses a fruit and vegetable humidifying device, wherein an air inlet and an air outlet are formed in the top of a water storage tank, a first atomizing group and a second atomizing group are arranged in the water storage tank, a plurality of atomizing heads for atomizing water are arranged at the lower parts of the first atomizing group and the second atomizing group, the top surfaces of the atomizing heads are lower than the water surface, a circulating water pump arranged outside the water storage tank is respectively connected with the bottom of the water storage tank and a filtering device through pipelines, and the water outlet end of the filtering device is communicated with the interior of the water storage tank. Compared with the prior art, the technical scheme of the invention has the advantages of precise control and the like, and can improve the humidity control precision of fruit and vegetable fresh-keeping and ensure the reliability of fruit and vegetable fresh-keeping.
Description
Technical Field
The invention relates to the technical field of fruit and vegetable preservation, in particular to a fruit and vegetable humidifying device and method.
Background
China is a large country for fruit and vegetable production, the annual yield of fruits and vegetables is stable in the world for nearly ten years, and although the annual yield of fruits and vegetables is very high, the fruits and vegetables are easy to deteriorate and not easy to store due to various reasons such as physiological aging, microbial damage, mechanical damage and the like after being picked.
The humidity control is an important factor for ensuring the quality of the fruits and vegetables, and the fruits and vegetables can be stored for a long time within a proper relative humidity range (80% -95%) without easy deterioration. If the relative humidity of the environment for storing fruits and vegetables is too low for a long time, for example, lower than 80%, respiration of fruits and vegetables is increased, and the quality of the fruits and vegetables is reduced. If relative humidity is higher, relative humidity is higher than 95% for a long time, can make water smoke adhere to and condense to the drop on fruit vegetables surface easily, evaporates along with time and influences environmental humidity and be unfavorable for the accurate regulation and control to humidity. Meanwhile, when the relative humidity of the air in the fruit and vegetable fresh-keeping environment is too high, the growth of bacteria is facilitated, the fruit and vegetable spoilage speed is accelerated, and therefore the accurate regulation and control of the humidity are important factors for improving the quality of the fruits and vegetables.
In addition, among the prior art, among the ultrasonic humidifying device that fruit vegetables kept fresh and used, the atomising head receives quality of water influence easily, though prior art's ultrasonic humidifying device's atomising head can adopt the natural vibration mode to clear up the impurity that adheres to the surface, but when the atomising head stopped working, the impurity of aquatic also can adhere to the surface of atomising head and influence the follow-up work of atomising head, can damage the atomising head even, finally influences the humidification effect.
Disclosure of Invention
The invention mainly aims to provide a device for accurately controlling the humidification of fruits and vegetables and also provides a method for using the device for humidifying fruits and vegetables, aiming at improving the humidity control accuracy of fruit and vegetable preservation and ensuring the reliability of fruit and vegetable preservation.
In order to achieve the purpose, the top of the water storage tank is provided with an air inlet and an air outlet, a first atomization group and a second atomization group are arranged inside the water storage tank, the lower parts of the first atomization group and the second atomization group are respectively provided with a plurality of atomization heads for atomizing water, the top surfaces of the atomization heads are lower than the water surface, a circulating water pump arranged outside the water storage tank is respectively connected with the bottom of the water storage tank and a filtering device through pipelines, and the water outlet end of the filtering device is communicated with the inside of the water storage tank.
Preferably, the top of the first atomization group and the second atomization group is provided with a cleaning spray head for spraying cleaning water to the atomization heads, and the cleaning spray head is connected with the cleaning water pump deep into the bottom of the water body through a pipeline.
Preferably, the top surface of the atomizing head is 2-3 cm lower than the water surface.
Preferably, a water quality sensor is arranged at the lower part of the water storage tank and connected with a control device so as to detect the quality of the water body in the water storage tank.
Preferably, a water level sensor for detecting the height of the water level is arranged at the lower part of the water storage tank and connected with the control device.
Preferably, the air outlet part is provided with a filter membrane, the tail end of the air outlet is provided with a common fan and a filter membrane fan side by side, the filter membrane fan is over against the filter membrane, and the air outlets of the common fan and the filter membrane fan face outwards.
Preferably, the bottom of the water storage tank is provided with a drainage pipeline, and the end part of the drainage pipeline is provided with a drainage valve for controlling opening or closing.
Preferably, the water quality sensor, the water level sensor, the common fan, the filter membrane fan and the drain valve are respectively electrically connected with the control device, and the control device is a single chip microcomputer control circuit.
The invention also provides a control method using the fruit and vegetable humidifying device, which comprises the following steps:
s1: the water quality sensor detects whether the water quality in the water storage tank meets the requirement, if the water quality does not meet the requirement, the water in the water storage tank is sucked by the circulating water pump to the filtering device for filtering, and then the water flows back into the water storage tank until the water quality meets the requirement;
s2: the difference between the current humidity value and the target humidity value of the fruit and vegetable fresh-keeping environment is greater than or equal to 20%, and the first atomization group, the second atomization group, the filter membrane fan and the common fan are simultaneously started to convey the mist generated by the atomization head to the fruit and vegetable fresh-keeping environment to improve the humidity; if the difference between the current humidity value and the target humidity value of the fruit and vegetable fresh-keeping environment is less than 20%, the second atomization group and the filter membrane fan are simultaneously started to convey the mist generated by the atomization head to the fruit and vegetable fresh-keeping environment to improve the humidity;
s3: the difference between the current humidity value and the target humidity value of the fruit and vegetable fresh-keeping environment is greater than or equal to 5%, and the first atomization group, the second atomization group, the filter membrane fan and the common fan are simultaneously started to convey the mist generated by the atomization head to the fruit and vegetable fresh-keeping environment so as to reduce the humidity difference between the two; and if the difference between the current humidity value and the target humidity value of the fruit and vegetable fresh-keeping environment is less than 5%, the filter membrane fan reduces the speed and closes the second atomization group until the humidity reaches the set target value.
Compared with the prior art, the technical scheme of the invention has the following advantages:
according to the technical scheme, when the relative humidity of the fruit and vegetable preservation environment is lower than a set minimum value, the first atomization group and the second atomization group are simultaneously started to generate the atomization gas, and the atomization gas is directly conveyed into the fruit and vegetable preservation environment through the common ventilator and the filter membrane fan to improve the relative humidity of the environment. When the relative humidity is higher than the minimum value, only the second atomization group is controlled to work to generate atomization gas, meanwhile, the filter membrane fan absorbs the atomization gas and enables the atomization gas to pass through the filter membrane and then be conveyed to the fruit and vegetable fresh-keeping environment, water mist with larger particles is filtered under the resistance action of the filter membrane, the water mist particles reaching the fruit and vegetable fresh-keeping environment are fine and few, the fruit and vegetable fresh-keeping environment is humidified slowly, and the humidification process is stopped when the humidity of the air reaches a target value, so that the technical scheme of the invention can perform effective and accurate humidity control through the filter membrane.
According to the technical scheme, the cleaning spray heads are arranged to clean the surfaces of the atomization spray heads of the first atomization group and the second atomization group, impurities on the surfaces of the atomization heads can be effectively removed by cleaning the atomization heads regularly, the humidification effect is improved, and the service life of the atomization heads is prolonged.
In addition, the technical scheme of the invention adopts the water level sensor to detect the height of the water level in the water storage tank in real time, and the water quality in the water storage tank is detected by the water quality sensor, so that whether the atomizing head needs to be cleaned or not and whether the water in the water tank needs to be filtered and cleaned or not can be accurately judged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a fruit and vegetable humidifying device of the present invention;
FIG. 2 is a schematic side view of the humidifying device for fruits and vegetables according to the present invention;
FIG. 3 is a schematic diagram of the atomizing group of the present invention;
FIG. 4 is a control flow chart of the fruit and vegetable humidifying device of the present invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a fruit and vegetable humidifying device.
Referring to fig. 1 to 3, in the embodiment of the present invention, the fruit and vegetable humidifying device includes a water storage tank 1, wherein the top of the water storage tank 1 is respectively provided with an air inlet 14 and an air outlet 15, a first atomizing group 4 and a second atomizing group 13 are arranged inside the water storage tank 1, and a plurality of atomizing heads for atomizing a water body and having a top surface lower than a water surface are arranged at the lower portions of the first atomizing group 4 and the second atomizing group 13. Meanwhile, the bottom of the water storage tank 1 is connected with the circulating water pump 2 through a pipeline, the circulating water pump 2 is further connected with the filtering device 3, the water outlet end of the filtering device 3 is communicated with the inside of the water storage tank 1, and preferably, an activated carbon filtering material is arranged inside the filtering device 3 of the embodiment of the invention to filter and clean the water body.
In order to clean the surface of the atomized atomizing head in time, the top of the first atomizing group 4 and the second atomizing group 13 of the embodiment of the invention is provided with the cleaning spray head 5 for spraying cleaning water to the atomizing head, and the cleaning spray head 5 is connected with the cleaning water pump 12 which is deep into the bottom of the water body through the connecting hose 6.
In order to enable the atomizing head in the water storage tank 1 to generate the atomizing gas more efficiently when generating the atomizing gas, the first atomizing group 4 and the second atomizing group 13 of the embodiment of the invention float on the water surface, and preferably the top surface of the atomizing head is 2-3 cm lower than the water surface.
In order to monitor parameters such as pH value, salt conductivity, conductivity and salinity of the water in the water storage tank 1 in real time, a water quality sensor 8 is arranged at the lower part of the water storage tank 1 in the embodiment of the invention and is connected with a control device 7 so as to detect the quality of the water in the water storage tank 1. Preferably, the lower part of the water storage tank 1 is provided with a water level sensor 9 for detecting the water level height, and the water level sensor is connected with the control device 7, so that the water level of the water body in the water storage tank 1 can be conveniently and timely detected.
In the embodiment of the invention, the air outlet 15 is partially provided with a filter membrane 19, the tail end of the air outlet 15 is provided with a common fan 17 and a filter membrane fan 20 in parallel, the filter membrane fan 20 is over against the filter membrane 19, and the air outlets of the common fan 17 and the filter membrane fan 20 face outwards.
In addition, the bottom of the water storage tank 1 of the embodiment of the invention is provided with a drainage pipeline 10, the end part of the drainage pipeline 10 is provided with a drainage valve 11 for controlling the opening or closing, wherein the water quality sensor 8, the water level sensor 9, the common fan 17, the filter membrane fan 20 and the drainage valve 11 are respectively and electrically connected with a control device 7, and the control device 7 is a singlechip control circuit.
Referring to fig. 1 to 4, the present invention further provides a control method using the fruit and vegetable humidifying device, including the following steps:
s1: the water quality sensor 8 detects whether the water quality in the water storage tank 1 meets the requirement, if the water quality does not meet the requirement, the water in the water storage tank 1 is sucked to the filtering device 3 through the circulating water pump 2 for filtering, and then the water flows back into the water storage tank 1 until the water quality meets the requirement;
s2: the difference between the current humidity value and the target humidity value of the fruit and vegetable fresh-keeping environment is greater than or equal to 20%, the first atomization group 4, the second atomization group 13, the filter membrane fan 20 and the common fan 17 are simultaneously started to convey the mist generated by the atomization head to the fruit and vegetable fresh-keeping environment to improve the humidity; if the difference between the current humidity value and the target humidity value of the fruit and vegetable fresh-keeping environment is less than 20%, the second atomization group 13 and the filter membrane fan 20 are simultaneously started to convey the mist generated by the atomization head to the fruit and vegetable fresh-keeping environment to increase the humidity;
s3: the difference between the current humidity value and the target humidity value of the fruit and vegetable fresh-keeping environment is greater than or equal to 5%, the first atomization group 4, the second atomization group 13, the filter membrane fan 20 and the common fan 17 are simultaneously started to convey the mist generated by the atomization head to the fruit and vegetable fresh-keeping environment, and the humidity difference between the two is reduced; if the difference between the current humidity value and the target humidity value of the fruit and vegetable fresh-keeping environment is less than 5%, the speed of the filter membrane fan 20 is reduced, and the second atomization group 13 is closed until the humidity reaches the set target value.
Referring to fig. 1 to 4, the working principle of the fruit and vegetable humidifying device according to the embodiment of the present invention is as follows:
when the fruit and vegetable humidifying device provided by the embodiment of the invention starts to work, water is added into the water storage tank 1 firstly, and the water is stopped being added into the water storage tank 1 when the added water reaches the set height.
If the water quality sensor 8 detects that the water quality in the water storage tank 1 does not meet the corresponding labeling requirement, the control device 7 controls the circulating water pump 2 to work to suck the water in the water storage tank 1 and convey the water to the filtering device 3 for filtering until the water in the water storage tank 1 meets the corresponding parameter requirement.
When the water quality in the water storage tank 1 meets the corresponding quality requirement and the relative humidity of the fresh-keeping environment of the fruits and vegetables is lower than 80%, the control device 7 controls the first atomization group 4 and the second atomization group 13 to work simultaneously to generate water mist, and meanwhile, the filter membrane fan 20 and the common fan 17 arranged at the water mist conveying port 16 work simultaneously to generate suction force so as to enable the water mist to pass through the filter membrane 19 and the common air outlet 18 and reach the fresh-keeping area of the fruits and vegetables, and the fresh-keeping environment of the fruits and vegetables is humidified. When the relative humidity of the fruit and vegetable fresh-keeping environment is greater than 80%, the common fan 17 and the first atomization group 4 are closed, so that the water mist cannot reach the fresh-keeping environment of the fruit and vegetable, the water mist can only reach the fresh-keeping area of the fruit and vegetable after passing through the filter membrane 19, and after the relative humidity of the fruit and vegetable fresh-keeping environment reaches the setting range of 80-95%, the second atomization group 13 and the filter membrane fan 20 are controlled to stop working.
When the fruit vegetables fortune reaches destination or fruit vegetables humidification device needs to be idle for a long time, open through controlling means 7 control drain valve 11 circular telegram to can be to the water emission in the storage water tank 1, when the water level in the storage water tank 1 descends to level sensor 9 target water level, will close in order to stop outwards carrying out the water emission through controlling means 7 control drain valve 11, then wash water pump 12 upwards delivery water body, thereby accessible cleaning spray 5 sprays downwards in order to clean the atomising head surface, finally clear away the impurity on atomising head surface. After the water is cleaned for a period of time, the cleaning water pump 12 stops conveying the water upwards, and after the cleaning of the atomizing head is finished, the drain valve 11 is opened again and continues to discharge the water outwards until the water in the water storage tank 1 is completely discharged.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (1)
1. The control method of the fruit and vegetable humidifying device is characterized in that an air inlet and an air outlet are formed in the top of a water storage tank, a first atomizing group and a second atomizing group are arranged in the water storage tank, a plurality of atomizing heads for atomizing water are arranged on the lower portions of the first atomizing group and the second atomizing group, the top surfaces of the atomizing heads are lower than the water surface, a circulating water pump arranged outside the water storage tank is respectively connected with the bottom of the water storage tank and a filtering device through pipelines, and the water outlet end of the filtering device is communicated with the interior of the water storage tank; cleaning nozzles are arranged at the tops of the first atomization group and the second atomization group and used for spraying cleaning water to the atomization heads, and the cleaning nozzles are connected with a cleaning water pump which extends deep into the bottom of a water body through a pipeline; the top surface of the atomizing head is 2-3 cm lower than the water surface; the lower part of the water storage tank is provided with a water quality sensor which is connected with a control device to detect the water quality in the water storage tank; a water level sensor for detecting the height of the water level is arranged at the lower part of the water storage tank and is connected with the control device; the air outlet part is provided with a filter membrane, the tail end of the air outlet is provided with a common fan and a filter membrane fan in parallel, the filter membrane fan is over against the filter membrane, and the air outlets of the common fan and the filter membrane fan face outwards; the bottom of the water storage tank is provided with a drainage pipeline, and the end part of the drainage pipeline is provided with a drainage valve for controlling opening or closing; the water quality sensor, the water level sensor, the common fan, the filter membrane fan and the drain valve are respectively and electrically connected with the control device, and the control device is a single chip microcomputer control circuit;
the method comprises the following steps:
s1: the water quality sensor detects whether the water quality in the water storage tank meets the requirement, if the water quality does not meet the requirement, the water in the water storage tank is sucked by the circulating water pump to the filtering device for filtering, and then the water flows back into the water storage tank until the water quality meets the requirement;
s2: the difference between the current humidity value and the target humidity value of the fruit and vegetable fresh-keeping environment is greater than or equal to 20%, and the first atomization group, the second atomization group, the filter membrane fan and the common fan are simultaneously started to convey the mist generated by the atomization head to the fruit and vegetable fresh-keeping environment to improve the humidity; if the difference between the current humidity value and the target humidity value of the fruit and vegetable fresh-keeping environment is less than 20%, the step S3 is executed;
s3: the difference between the current humidity value and the target humidity value of the fruit and vegetable fresh-keeping environment is greater than or equal to 5%, and the second atomization group and the filter membrane fan are simultaneously started to convey the mist generated by the atomization head to the fruit and vegetable fresh-keeping environment so as to reduce the humidity difference between the current humidity value and the target humidity value; and if the difference between the current humidity value and the target humidity value of the fruit and vegetable fresh-keeping environment is less than 5%, the filter membrane fan reduces the speed and closes the second atomization group until the humidity reaches the set target value.
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| CN109938091A (en) * | 2019-01-24 | 2019-06-28 | 华南农业大学 | A kind of preserving fruit and vegetable utilizing humidifier and its humidifying controlling method |
| CN111887376A (en) * | 2020-08-05 | 2020-11-06 | 惠州市文承环境技术有限公司 | Ultrasonic gas food fresh-keeping purifier |
| CN113119837B (en) * | 2021-04-19 | 2022-01-21 | 广东顶鑫农业供应链集团有限公司 | Fresh cold chain logistics transportation and storage environment intelligent regulation and control method based on environmental characteristic real-time monitoring |
| CN113785875B (en) * | 2021-09-01 | 2023-03-10 | 西南大学 | Application of geraniol and leaf alcohol in storage and preservation of fruits and vegetables and method for postharvest treatment and preservation of fruits |
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| CN106005792A (en) * | 2016-07-18 | 2016-10-12 | 苏州大福外贸食品有限公司 | Container capable of achieving dry mist humidity control and fresh keeping of fruits and vegetables |
| CN206838604U (en) * | 2017-04-04 | 2018-01-05 | 孙丽兰 | A kind of veterinary drug material cleaning device for recycling water resource |
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