JP4966919B2 - Insecticides for fruits and vegetables - Google Patents

Description

  The present invention relates to an insecticidal apparatus for fruits and vegetables for killing citrus fruit flies and oyster flies (eggs and larvae) adhering to fruits and vegetables such as mango.

  It is known that the eggs and larvae of citrus fruit flies and pellucidae are killed by steaming (temperature 46-47 ° C, humidity 90-100%) for about 3 hours, depending on the production area, type and variety of fruits and vegetables. ing. In recent years, a treatment method for reducing heat damage of fruits and vegetables has also been established by a combined treatment in which steaming heat treatment is performed after dry heat treatment by dry heat (temperature 30 to 43 ° C., humidity 55 to 80%).

The fruit and vegetable insecticidal apparatus used for the above-mentioned purpose is a plurality of differential pressure insecticide cylinders for storing fruits and vegetables placed in a processing chamber, and steam or dry heat whose temperature and humidity are adjusted is applied to each differential pressure insecticide cylinder. It is forcibly distributed upward from below to kill insects (eggs and larvae) that adhere to the fruits and vegetables in each differential pressure insecticide tube, but as described in Patent Document 1, In the insecticide device for seeds of fruits and vegetables, steam or dry heat with adjusted temperature and humidity generated in the steam or dry heat generating area is provided on one side wall of the insecticidal treatment area that supports a plurality of differential pressure insecticide tubes. It is fed into the inside from the air inlet, and after flowing through each differential pressure insect cylinder in this insecticidal treatment area upward from the bottom, it is discharged from the exhaust port provided on the other side wall of the insecticidal treatment area, Constructed to circulate circulation path back to steam or dry heat generation area It was those.
Japanese Patent Publication No.61-1094

  That is, in the conventional insecticide for fruits and vegetables as described above, the distance from one steaming or dry heat generation area to each air supply port provided on one side wall of the insecticidal treatment area is different, and each air supply port Due to the fact that the distance from the differential pressure insecticide cylinder in the insecticidal treatment area is not constant, there is a large variation in the flow rate per unit time of steam or dry heat flowing through each differential pressure insecticide cylinder. In order to reduce this variation in flow rate, the conventional type has a structure in which a blower is incorporated in each air supply port and each exhaust port in the insecticidal treatment area, and a flow rate adjustable blower is also incorporated in each differential pressure insecticide tube. The equipment cost was very high. In addition, even if the flow rate per unit time of steaming or dry heat that circulates in each differential pressure insecticide cylinder can be made uniform by these blowers, it is circulated in each differential pressure insecticide cylinder due to the above causes. As a result, the temperature and humidity of the steaming or dry heat that is generated vary, and there is a fear that an equal insecticidal effect cannot be expected for all the fruits and vegetables in one processing unit stored in the insecticidal treatment area.

The object of the present invention is to provide an insecticide for fruits and vegetables that can solve the above-mentioned conventional problems, and the insecticide for fruits and vegetables according to claim 1 is referred to an embodiment described later. If it attaches and shows a code | symbol, the several differential pressure insecticide cylinder 4 which accommodates the fruits and vegetables 45 will be mounted in the process chamber 1, and the steam or dry heat in which temperature and humidity were adjusted will be put in each differential pressure insecticide cylinder 4 A fruit and vegetable insecticidal device that forcibly circulates upward from below and performs insecticidal processing on the fruits and vegetables 45 in each differential pressure insecticide tube 4, and includes a plurality of differential pressure insecticide tube support sections 5 a to 5 d in the processing chamber 1. Are disposed in series, and a steaming or dry heat generation area 3 parallel to the series direction of the differential pressure insecticide tube support section is provided. The insecticidal treatment area 2 and the steaming or dry heat generation area 3 have a differential pressure. Lower than the differential pressure insecticide tube 4 supported by the insecticide tube support sections 5a to 5d. The side flow passage 11 and the upper flow passage 12 above the differential pressure insecticide tube 4 supported by the differential pressure insecticide tube support sections 5a to 5d communicate with each other, and the steam or dry heat generation area 3 is heated downward. A plurality of heating air blowing means 17a to 17d for generating a flow are arranged so as to be positioned directly beside each differential pressure insecticidal cylinder support section 5a to 5d in the insecticidal treatment area 2, and steam or dry heat with the insecticidal treatment area 2 In the insecticide apparatus for fruits and vegetables in which the humidification means 32 which replenishes moisture in the heated air flow circulating through the generation area 3 is provided .
The humidifying means 32 includes humidifying nozzles 33 a to 33 f that spray water toward the upper flow passage 12 at the upper end of the insecticidal treatment area 2 .

More specifically, the humidifying nozzles 33a to 33f are more than the number of the differential pressure insecticidal cylinders 4 supported in series in the insecticidal treatment area 2. The number can be arranged at appropriate intervals along the differential pressure insecticide tube support section series direction.

Further, as described in claim 3 , at the upper end of the insecticidal treatment area 2, exhaust ports 20a to 20d whose opening degree can be adjusted are arranged so as to be located directly above the differential pressure insecticidal tube support sections 5a to 5d. In addition, intake ports 21a to 21d whose opening degree can be adjusted can be arranged at the upper end of the steaming or dry heat generation area 3 so as to be positioned directly above the heating air blowing means 17a to 17d. Further, as described in claim 4 , an openable / closable passage blocking door 13 can be provided in the upper flow passage 12 that connects the insecticidal treatment area 2 and the steam or dry heat generation area 3.

Furthermore, as described in claim 5 , water spraying means (water spray nozzles 28a to 28d) for spraying water into the differential pressure insecticidal tube support sections 5a to 5d on the upper end side of the insecticidal treatment area 2. Can be arranged. Further, as described in claim 6 , the processing chamber outer wall 1a forming the insecticidal treatment area 2 is adjacent to the upper end of the differential pressure insecticidal cylinder 4 supported by the differential pressure insecticidal cylinder supporting sections 5a to 5d. The windows 29a to 29d that can be freely opened and closed can be provided.

Further, as described in claim 7 , the bottom part of the insecticidal treatment area 2 is substantially covered by the required number of differential pressure insecticide cylinders 4 that are supported in series by the differential pressure insecticide cylinder support sections 5a to 5d. An opening 37 having a rectangular shape in plan view that covers the entire area is provided, and the lower flow passage 11 and the insecticidal treatment area 2 are configured to communicate with each other through the opening 37. In the opening 37, A differential pressure insecticidal tube support section A process that slidably supports the differential pressure insecticidal tube 4 in the series direction but permits the flow of air from the bottom to the top, and is adjacent to at least one of the front and rear ends of the conveyor 7 The outdoor wall can be provided with a differential pressure insecticidal tube inlet / outlet 9a provided with a door 8a that can be freely opened and closed. In this case, as described in claim 8 , the differential pressure insecticidal cylinder 4 includes a transport pallet 40 and a fruit and vegetable storage container 41 stacked on the pallet 40 so as to cover almost the entire surface thereof. The pallet 40 is provided with a unidirectional fork insertion hole 42 and a vertical ventilation hole 43 provided on the entire surface including a region overlapping with the fork insertion hole 42, and the fruit and vegetables storage container 41 has a bottom surface. The differential pressure insecticidal cylinder 4 is provided with a fork insertion hole 42 of the pallet 40 in a direction parallel to the series direction of the differential pressure insecticidal cylinder support section of the insecticidal treatment area 2. Fork insertion of the pallet 40 of the differential pressure insecticidal cylinder 4 adjacent to the inside of the door 8a when closed on the open / close door 8a of the differential pressure insecticidal cylinder insertion / removal port 9a. It can be attached a packing 46 for closing the hole 42.

  According to the insecticide apparatus for fruits and vegetables according to the present invention having the above-described configuration, a plurality of differential pressure insecticide tubes that contain fruits and vegetables are serially supported by each differential pressure insecticide tube support section in the insecticidal treatment area, and steam or dry heat is generated. By operating each heating air blowing means and humidifying means in the area, steam or dry heat adjusted to a predetermined temperature and predetermined humidity, from the steam or dry heat generation area to the lower flow path, in the insecticidal treatment area, And forced circulation in a circulation path that returns to the original steam or dry heat generation area via the upper flow passage. At this time, the steam or dry heat that circulates from the bottom to the top in each differential pressure insecticide tube supported by each differential pressure insecticide tube support section in the insecticidal treatment area is the source of the heating air blowing means in the insecticide treatment area. Since the flow path lengths before being fed to each differential pressure insecticidal tube are equal and pass through the shortest distance, steam passing through each heating air blowing means or As long as the temperature and humidity of the dry heat are adjusted to a certain level, the temperature or humidity of the steam or dry heat passing through each differential pressure insecticide tube will hardly vary from one differential pressure insecticide tube to another. Since energy is efficiently supplied into each differential pressure insecticide cylinder, all the fruits and vegetables stored in the insecticidal treatment area using multiple differential pressure insecticide cylinders can achieve the desired insecticidal action uniformly. Can work efficiently. In addition, the blower means only needs to be installed in the same number as the differential pressure insecticide tube, and the equipment cost can be reduced as compared with the configuration described in Patent Document 1.

Basically, the humidifying means may be in a circulation path that returns from the steam or dry heat generation area to the original steam or dry heat generation area through the lower flow path, the insecticidal treatment area, and the upper flow path. However, according to the configuration of the present invention , the path length in the flow direction of steam or dry heat from the humidifying means to the steam or dry heat generation area is maximized, and the difference Each of the differential pressure insect cylinders is a simple configuration that uses a humidifying nozzle that is spot-arranged at appropriate intervals in the series direction of the pressure insecticide cylinders, but sufficiently disperses moisture until it reaches the steaming or dry heat generation area. The humidity of steam or dry heat passing through the water is made uniform, and the expected insecticidal effect can be expected without any unevenness. The number of humidifying nozzles in this case, the insecticide treatment area in the same number of series supported is crush insects cylinder, but may be disposed so as to correspond to the difference crush insects cylinder in claim 2 When configured as described, it becomes easier to equalize the humidity of steam or dry heat passing through each differential pressure insecticide tube.

Moreover, according to the structure of Claim 3 , high humidity air is automatically carried out of a processing chamber by opening the exhaust port located in the terminal of the ascending flow path which passes in the insecticidal treatment area (differential pressure insecticidal cylinder). The low humidity outside the processing chamber can be automatically taken into the processing chamber by opening the intake port located at the beginning of the downward flow path that is exhausted and passes through the steam or dry heat generation area. Therefore, the humidity of the heated air passing through the insecticidal treatment area (differential pressure insecticide cylinder) can be easily adjusted to a level suitable for dry heat treatment by appropriately adjusting the opening degree of the exhaust port and the intake port. it can. That is, a composite treatment for performing a dry heat treatment before the steam heat treatment can be easily performed as necessary. In this case, according to the configuration of claim 4 , the exhaust air and the intake port are fully opened and at the same time the upper flow passage is blocked by the passage blocking door, so that the outside air taken in from the fully opened intake port is steamed or Since it passes through the inside of the insecticidal treatment area (inside the differential pressure insecticide cylinder) from the dry heat generation area and is discharged out of the processing chamber through the fully open exhaust port, the temperature inside the processing chamber can be determined by performing this operation after the end of the steam heat treatment. The humidity can be lowered quickly, and thus the temperature of the processed fruit and vegetables can be lowered to room temperature.

Moreover, according to the structure of Claim 5 , after processing, water can be sprayed in each differential-pressure insecticide cylinder, and the temperature of the processed fruit and vegetables in each differential-pressure insecticide cylinder can be reduced rapidly. . Accordingly, it is possible to maintain the quality by preventing thermal injury of the processed fruits and vegetables. In particular, it is desirable to implement the configuration according to claim 5 in combination with the configuration according to claim 4 .

In steaming or dry heat treatment, it is ideal to adjust the temperature and humidity of steaming or dry heat that is sent into the insecticidal treatment area (inside the differential pressure insecticidal cylinder) according to the internal temperature of the fruits and vegetables actually processed. In this case, according to the configuration of claim 6 , the window that can be opened and closed adjacent to the upper end of each differential pressure insecticide tube after each differential pressure insecticide tube is set in the insecticidal treatment area. The temperature sensor for temperature detection is manually inserted into the fruits and vegetables in each differential pressure insecticide tube, and the connection cord and controller for the temperature sensor for temperature sensors already inserted in the fruits and vegetables in each differential pressure insecticide tube It is easy to perform the connection work with the side fruit and vegetables internal temperature information fetching code or the work of inserting the temperature sensor for the temperature sensor already inserted into the fruit and vegetables in each differential pressure insecticide tube outside the processing chamber. it can.

Furthermore, according to the structure of Claim 7 , although the operation | work which installs the required number of differential-pressure insecticide cylinders in each differential-pressure insecticide cylinder support section of an insecticidal treatment area can be performed easily, a lower side flow path The steam or dry heat fed to the bottom of the insecticidal treatment area is virtually eliminated from rising through the space around each differential pressure insecticidal cylinder with low flow resistance, and the insecticidal treatment from the lower flow passage Almost all of the steam or dry heat fed to the lower side of the area can be distributed to each differential pressure insecticide tube for efficient processing. In this case, according to the configuration of the eighth aspect , the differential pressure insecticide tube can be easily fed into the insecticidal treatment area of the processing chamber by using the forklift, but the lowermost stage constituting each differential pressure insecticide tube Steam or dry heat to be fed into the fruit and vegetable storage containers stacked on the transport pallet via the vertical vents of the transport pallet is provided in the fork insertion hole of the transport pallet. It is possible to prevent leakage to the side via the packing provided at the opening / closing door of the differential pressure insect tube outlet, and the generated steam or dry heat is more efficiently generated in each differential pressure insect tube. It can be used to produce the desired insecticide efficiently.

  A specific embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, reference numeral 1 denotes a processing chamber, which includes an insecticidal treatment area 2 and an insecticidal treatment area 2. Parallel steaming or dry heat generation areas 3 are provided. The insecticidal treatment area 2 is provided such that a plurality of (four in the illustrated example) differential pressure insecticide tube support sections 5a to 5d each having a size substantially equal to the bottom area of the differential pressure insecticide tube 4 are adjacent to each other in series. Thus, a free roller conveyor 7 comprising a pair of left and right roller rails 6a, 6b is laid over the entire length of the differential pressure insecticide tube support section in the series direction, and the differential pressure insecticide tube support section of the insecticide treatment area 2 in the serial direction On the outer walls of the processing chambers at both ends, differential pressure insecticide tube access ports 9a and 9b having opening / closing doors 8a and 8b are provided.

  In the vertical partition 10 that divides the insecticidal treatment area 2 from the steam or dry heat generation area 3 and parallel to the series direction of the differential pressure insecticidal cylinder support compartment, the insecticidal treatment area 2 and steam or dry heat are provided below the free roller conveyor 7. The lower communication passage 11 that communicates with the heat generation area 3 and the insecticidal treatment area 2 and the steam or dry heat generation area 3 above the differential pressure insect kill cylinder 4 supported by the differential pressure insect kill support sections 5a to 5d. An upper communication passage 12 that is in communication is provided so as to be continuous over substantially the entire length of the vertical partition wall 10, and the upper communication passage 12 is provided with a passage blocking door 13 that opens and closes the upper communication passage 12. In this embodiment, the passage blocking door 13 is pivotally supported around the horizontal support shaft 14 supported along the upper side of the upper communication passage 12 so that the horizontal support shaft 14 can be swung up and down. An opening / closing actuator (cylinder) 15 that is driven to rotate is attached to the outside of the processing chamber 1.

  In the steam or dry heat generation area 3, a horizontal partition wall 16 is installed at an intermediate height between the lower communication path 11 and the upper communication path 12, and an insecticidal treatment located on the horizontal partition wall 16 with the vertical partition wall 10 therebetween. Four heating air blowing means 17a to 17d are attached so as to be positioned directly beside each of the differential pressure insecticidal tube support sections 5a to 5d in the area 2. Each heating air blowing means 17a to 17d includes a fan 18 that blows air from an upper space of the horizontal partition wall 16 toward a lower space, and a heater that heats the air supplied to the lower space of the horizontal partition wall 16 by the electric fan 18. 19.

  On the ceiling of the processing chamber 1, there are four exhaust ports 20 a to 20 d positioned directly above the differential pressure insecticidal tube support sections 5 a to 5 d in the insecticidal treatment area 2, and each heating in the steaming or dry heat generation area 3. Four intake ports 21a to 21d are provided directly above the blowing means 17a to 17d. The exhaust ports 20a to 20d and the intake ports 21a to 21d are provided with dampers 22 and 23 that can be individually adjusted in opening degree by motor drive from fully closed to fully open, respectively. In addition, each exhaust port 20a-20d and each intake port 21a-21d are provided in the slant of the diagonally outward upward of the mutually opposite recessed spaces 24 and 25 projected upward from the ceiling of the process chamber 1, respectively. The insect nets 26 and 27 are stretched, and the dampers 22 and 23 are configured to open and close inside the recessed spaces 24 and 25.

  Water injection nozzles 28a to 28a are provided as water injection means for injecting water toward the differential pressure insecticidal cylinder support sections 5a to 5d at positions directly above the differential pressure insecticidal cylinder support sections 5a to 5d in the insecticidal treatment area 2. 28d is disposed. Each of these water injection nozzles 28a to 28d is disposed at the center of the lower end of the recessed space 24 provided with the exhaust ports 20a to 20d.

  Each differential pressure insecticide tube is placed on the processing chamber outer wall 1a facing the upper communication path 12 in the space above the differential pressure insecticide tube 4 supported by the differential pressure insecticide tube support sections 5a to 5d in the insecticide treatment area 2. Openable and closable windows 29a to 29d are provided at the upper ends of the differential pressure insecticidal cylinders 4 supported by the support sections 5a to 5d, respectively, and the tip temperature detector is inserted into the fruits for each of the windows 29a to 29d. Temperature measuring sensors 30a to 30d to be used are arranged inside the processing chamber outer wall 1a via connection cords 31a to 31d, respectively.

  Further, the humidifying means 32 is provided on the processing chamber outer wall 1a facing the upper communication path 12 in the space above the differential pressure insecticidal cylinder 4 supported by the differential pressure insecticidal cylinder supporting sections 5a to 5d in the insecticidal treatment area 2. Is provided. The humidifying means 32 is composed of a larger number (six in the embodiment) of humidifying nozzles 33a to 33f than the number of the differential pressure insecticidal tube support sections 5a to 5d. A high-pressure air pipe is provided inside the processing chamber outer wall 1a at appropriate intervals in the series direction of the differential-pressure insecticidal cylinder support section so as to spray water toward the passage 12, and is connected to the hot water pipe in a spray nozzle. Is a type of spraying hot water from high pressure air.

  The processing chamber floor surface 1b in the insecticidal processing area 2 and the processing chamber floor surface 1c in the steaming or dry heat generation area 3 are inclined so that the portion adjacent to the vertical partition wall 10 is lowest, and on the floor surfaces 1b and 1c. The drain that has flowed through the drainage pipe 35 is configured to be taken out from the treatment chamber through the drain pipe 35 from the drain collecting groove 34 disposed at the lower inclined end of the floor surfaces 1b and 1c.

  In the above configuration, when the exhaust ports 20a to 20d and the intake ports 21a to 21d are fully closed by the dampers 22 and 23 and the passage 18 is opened, the fans 18 of the heating and blowing means 17a to 17d are operated. Then, the steam or dry heat generation area 3 is lowered through the fans 18 and enters the lower end space of the insecticidal treatment area 2 from the lower communication path 11, that is, enters the lower end space 2 a of the free roller conveyor 7. 2 in the differential pressure insecticidal tube support sections 5a to 5d of 2 and forced circulation flow through the circulation path from the upper end space 2b of the insecticidal treatment area 2 through the upper communication passage 12 and back into the steaming or dry heat generation area 3 An air flow is generated. Thus, the air flow rising from within the lower end space 2a of the insecticidal treatment area 2 is closed by the doors 8a and 8b at the ends in the series direction of the four differential pressure insecticidal tube support sections 5a to 5d adjacent to each other in series. The right and left sides of the row of differential pressure insecticide tube support sections 5a to 5d are closed between the processing chamber outer wall 1a and the vertical partition wall 10 by roller support frames 36a and 36b outside the roller rails 6a and 6b. In the opening 37 having a rectangular shape in plan view surrounded by the open / close doors 8a and 8b and the roller support frames 36a and 36b, in other words, in the four differential pressure insecticide tube support sections 5a to 5d adjacent to each other in series. Will only rise via. At this time, the air flow can rise not only between the pair of left and right roller rails 6a and 6b but also through a gap between adjacent rollers in the front and rear of each roller rail 6a and 6b.

  In addition, guide rails 38a and 38b for centering the differential pressure insecticide tube 4 are attached to the roller support frames 36a and 36b outside the pair of left and right roller rails 6a and 6b. At both ends, a guide roller 39 capable of rotating around a vertical support shaft for introducing the differential pressure insecticidal cylinder 4 into the guide rails 38a and 38b is disposed.

  As shown in FIGS. 2 to 4, the differential pressure insecticidal cylinder 4 has a transport pallet 40 having a bottom area substantially equal to each differential pressure insecticidal cylinder supporting section 5 a to 5 d in the insecticidal treatment area 2, The fruits and vegetables storage containers 41 are stacked so as to cover almost the entire surface. The transport pallet 40 includes a unidirectional fork insertion hole 42 and a vertical ventilation hole 43 provided on the entire surface including a region overlapping the fork insertion hole 42. The fruit and vegetables storage container 41 is provided with a vertical vent 44 on the bottom surface, and the bottom part is configured to be fitted and positioned inside the opening of the lower fruit and vegetables storage container 41 during stacking. Has been. Therefore, in the differential pressure insecticidal cylinder 4 constituted by stacking a predetermined number of stages of fruit and vegetables storage containers 41 packed with insecticidal target fruit and vegetables 45 so as to cover almost the entire surface of the transport pallet 40, When the differential pressure is applied so that the bottom surface (the bottom surface of the transport pallet 40) is positive pressure and the top surface (the top surface of the uppermost fruit and vegetables storage container 41) is negative pressure, An air flow that rises through the gap between the insecticidal fruits and vegetables 45 in each stage of the fruits and vegetables storage container 41 can be generated via the vent holes 44 on the bottom surface of the stages of the fruits and vegetables storage container 41.

  When the differential pressure insecticidal cylinder 4 having the above-described configuration is installed in the insecticidal treatment area 2 of the processing chamber 1, for example, one of the opening / closing doors 8a is opened and the fork insertion hole 42 of the lowermost transport pallet 40 is used by a forklift. Then, the differential pressure insecticidal cylinder 4 is placed on the free roller conveyor 7 so that the fork insertion hole 42 is parallel to the series direction of the differential pressure insecticidal cylinder support section. At this time, by using the guide roller 39 and the guide rails 38a and 38b, the differential pressure insecticidal cylinder 4 can be reliably transferred to a predetermined position in a predetermined direction. Next, the differential pressure insecticidal cylinder 4 carried onto the free roller conveyor 7 is pushed by the differential pressure insecticidal cylinder 4 (transport pallet 40) to be carried onto the free roller conveyor 7, and the differential pressure insecticidal cylinder 4 is moved. As shown in FIG. 5, four differential pressure insecticide tubes 4 are sequentially transferred in series on the free roller conveyor 7 in the manner of sliding on the free roller conveyor 7 and moving the door 8a. close. As a result, four differential-pressure insecticidal cylinders 4 are supported in a state adjacent to each other in series in the differential-pressure insecticidal cylinder support sections 5a to 5d set in the insecticidal treatment area 2, and open / close doors are provided at both ends in the series direction. 8a and 8b are adjacent to each other, and the four differential-pressure insecticidal cylinders 4 are in a state of closing the rectangular opening 37 in plan view at the bottom of the insecticidal treatment area 2.

  As described above, the four differential-pressure insecticidal cylinders 4 carried in and installed in the insecticidal treatment area 2 of the processing chamber 1 are adjacent to each other at the end surfaces where the fork insertion holes 42 of the respective transport pallets 40 are opened, and are connected in series. The fork insertion holes 42 of the transport pallet 40 located at both ends of the transport pallet 40 are closed by the open / close doors 8a and 8b, but actually the open / close doors 8a and 8b and the end face where the fork insert hole 42 of the transport pallet 40 opens. There is a gap between them. Accordingly, as shown in FIGS. 1 and 6, the open / close doors 8a and 8b are provided with a fork insertion hole 42 of the transport pallet 40 of the differential pressure insecticide tube 4 adjacent to the inside of the doors 8a and 8b when the doors 8a and 8b are closed. A packing 46 is provided in contact with the end face of the surrounding pallet to close the fork insertion hole 42, and the air flow flowing into the fork insertion hole 42 from the ventilation hole 43 of the transport pallet 40 opens and closes the fork insertion hole 42. Leakage from the opening end on the door 8a, 8b side to the outside of the differential pressure insecticide tube 4 can be suppressed.

  If four differential-pressure insecticidal cylinders 4 are carried in and installed in the insecticidal treatment area 2 of the processing chamber 1, the windows 29a to 29d adjacent to the upper ends of the differential-pressure insecticidal cylinders 4 are opened. Insecticides packed in the fruit and vegetable storage container 41 at the uppermost stage of each differential pressure insecticide tube 4 with temperature measuring sensors 30a-30d prepared in the insecticidal treatment area 2 corresponding to the windows 29a-29d. The figure which inserts the temperature sensor 30a-30d for temperature detection into one insecticide target fruit 45 selected suitably among the object fruits and vegetables 45, and is connected via each temperature detection temperature sensor 30a-30d via the connection cords 31a-31d. In the outside control device, the internal temperature of the insecticidal object fruits and vegetables 45 for each differential pressure insecticidal cylinder 4 can be measured.

  When the above preparatory work is completed, the exhaust ports 20a to 20d and the intake ports 21a to 21d are fully closed by the dampers 22 and 23, and the passage blocking door 13 is opened. When the fan 18 and the heater 19 of each heating air blowing means 17a to 17d are operated and the humidifying means 32 is operated, the steam or dry heat generation area 3 descends from each fan 18 as described above, From the lower communication passage 11, it enters the lower end space 2 a of the insecticidal treatment area 2 and rises directly above the differential pressure insecticidal cylinder support sections 5 a to 5 d from the opening 37 at the bottom of the insecticidal treatment area 2. A circulating air flow that flows through the circulation path from the upper end space 2b to the original fan 18 in the steam or dry heat generation area 3 via the upper communication path 12 is generated. The bottom surface of the four differential-pressure insecticidal cylinders 4 (the bottom surface of the transport pallet 40) is closed at the opening 37 of the unit, and heating air blowing means 17a to 17d are respectively disposed directly beside each differential-pressure insecticidal cylinder 4. Therefore, almost all of the air flow generated by each fan 18 (heating air blowing means 17a to 17d) is supplied to each differential pressure insecticidal cylinder 4 corresponding to the side without being mixed with each other. The inside of the insecticide tube 4 will rise. The air flow rising in each differential pressure insecticidal cylinder 4 is heated by the heater 19 and can be humidified with moisture sprayed from the humidifying nozzles 33 a to 33 f of the humidifying means 32.

  That is, the heater 19 and the humidifying nozzles 33a to 33f of each of the heating and blowing means 17a to 17d, for example, the heating and blowing means 17a to 17d provided on the passage wall below the horizontal partition 16 in the steaming or dry heat generation area 3 are provided. Current temperature information and current humidity information obtained from each temperature sensor 47a to 47d and one humidity sensor 48, and internal temperature information of insecticide target fruits and vegetables 45 for each differential pressure insecticide tube 4 obtained from temperature sensors 30a to 30d for temperature detection Based on the above, by executing a control program set in advance in a control device (not shown) and automatically controlling the temperature and humidity of the air flow forcibly flowing in each differential pressure insecticide tube 4, It can be automatically adjusted based on temperature change and elapsed time, etc., and each differential pressure insecticide by this air flow with automatically adjusted temperature and humidity The insecticidal target fruit or vegetable 45 accommodated in the 4, increasing the internal temperature was heated under a predetermined humidity environment, it can be obtained the insecticidal effect of interest.

  As described above, the difference between the dry heat treatment and the steam heat treatment is the difference in the temperature and humidity of the air flow forcibly flowing in the differential pressure insecticidal cylinder 4, so that the dry heat treatment control program or the steam heat treatment control program. The target dry heat treatment or steam heat treatment can be carried out by automatically controlling the heater 19 of each heating air blowing means 17a-17d and the humidifying nozzles 33a-33f in the above manner. In carrying out the dry heat treatment, the opening degree of the dampers 22 and 23 of the exhaust ports 20a to 20d and the intake ports 21a to 21d is adjusted as described above, and the excessively humid air rising in the insecticidal treatment area 2 is discharged to the exhaust port 20a. At the same time as it is discharged from the processing chamber to 20d, low humidity outside air is automatically taken into the steaming or dry heat generation area 3 from the intake ports 21a to 21d, and the inside of each differential pressure insecticide tube 4 is forced. Temperature of the air stream to be moving can be lowered up promptly predetermined value. Of course, the dampers 22 and 23 are automatically controlled by a control device (not shown) based on the current humidity information of the circulating air flow obtained from the humidity sensor 48. In this dry heat treatment, the humidifying means 32 (humidifying nozzles 33a to 33f) can be used in combination as appropriate.

  When the heat treatment or the combined heat treatment of the dry heat treatment and the steam heat treatment is performed as described above and the insecticidal treatment for the insecticide target fruits and vegetables 45 in the differential pressure insecticidal cylinders 4 is completed, the exhaust ports 20a to 20d and the intake port 21a. In the state where the dampers 22 and 23 of ˜21d are fully opened and the upper communication passage 12 is closed by the passage blocking door 13, only the fan 18 of the heating air blowing means 17 a ˜ 17 d is operated and continuously taken in at room temperature and low humidity. The outside air can be forcibly circulated in each differential pressure insecticide tube 4 in the insecticidal treatment area 2, and the temperature of the insecticide-treated fruits and vegetables 45 in each differential pressure insecticide tube 4 can be quickly reduced. Simultaneously with the step of forcibly circulating the ambient air at a low humidity within each differential pressure insecticide tube 4, or as a pre-process or a post-process of the relevant step, the water injection nozzles 28a to 28a located directly above each differential pressure insecticide tube 4 2 Conduct water spray rapid cooling step of spraying water from above to the difference crush insects cylinder 4 from d, the temperature of the insecticide treated fruits or vegetables 45 of each difference crush insects cylinder 4 can be further rapidly lowered. At this time, the cooling drainage flowing down in each pressure killing cylinder 4 and the dew condensation water adhering and dropping on the inner surface of the processing chamber 1 during normal steaming heat treatment are transferred to the drain collecting groove 34 from the floor surfaces 1b and 1c of the processing chamber 1. It can be recovered and discharged out of the processing chamber by the drain pipe 35.

  The cooling process of the processed fruits and vegetables 45 may be controlled only by the set time, or the temperature and temperature sensors 30a to 30d obtained from the temperature measuring temperature sensors 30a to 30d inserted into the insecticidal target fruits and vegetables 45 at the upper ends of the differential pressure insecticide tubes 4 may be used. You may control based on internal temperature information. Thus, when the cooling process of the processed fruits and vegetables 45 is completed, the openable and closable windows 29a to 29d are opened, the temperature measuring sensors 30a to 30d are removed from the insecticidal fruits and vegetables 45, and at least one of the open / close doors 8a and 8b. For example, the open / close door 8b opposite to the side where the differential pressure insecticide tube 4 is loaded is opened, and each of the differential pressure insecticide tube support sections 5a to 5d in the insecticidal treatment area 2 from the differential pressure insecticide tube loading / unloading port 9b. What is necessary is just to carry out the differential pressure insecticide cylinder 4 using a forklift. In addition, although a differential pressure insecticidal tube insertion / exit opening / closing by an opening / closing door may be provided only at one end side in the lengthwise direction of the insecticidal treatment area 2, as in the above-described embodiment, the lengthwise direction of the insecticidal treatment area 2 may be provided. When the differential pressure insecticidal tube outlets 9a, 9b that are opened and closed by the open / close doors 8a, 8b are provided at both ends, the differential pressure insecticidal tube outlets 9a, 9b are alternatively opened, and the inside of the insecticidal treatment area 2 is opened. The differential-pressure insecticidal cylinder 4 can be carried in and out so that the differential-pressure insecticidal cylinder 4 moves in one way.

  In addition, when it is necessary, it replaces with the free roller conveyor 7 when driving the total length of the insecticidal treatment area 2 (steaming or dry heat generating area 3) to increase the number of differential pressure insecticidal cylinders 4 to be driven. It is also possible to provide a drive conveyor, such as a drive roller conveyor, that can transport the differential pressure insecticide tube 4 supported by the above in the length direction of the insecticidal treatment area 2 (differential pressure insecticide tube support section series direction). In this case, the drive source of the drive conveyor is installed outside the processing chamber 1, and the drive source and the conveyor main body are interlocked and connected by transmission means (transmission shaft) penetrating the wall of the process chamber. It can prevent being adversely affected by the high humidity environment in the processing chamber 1.

  Further, in actual control, as described above, temperature measuring temperature sensors 30a to 30d to be inserted into the fruits and vegetables 45 accommodated in each differential pressure insecticidal cylinder 4 are used in combination. ˜30d is a stage where the fruits and vegetables storage containers 41 packed with the fruits and vegetables 45 are stacked on the transport pallet 40 before being carried into the processing chamber 1, and at any position in the fruits and vegetables storage container 41 at an arbitrary level. It is inserted into a certain fruit and vegetable 45, and the connection ends of the connection cords 31a to 31d of the temperature detecting temperature sensors 30a to 30d and the connection end of the fruit and vegetables internal temperature information fetching cord connected to the controller side are processed. It can also comprise so that it may mutually connect by the connection operation of the connection tool performed through each openable window 29a-29d of the outdoor wall 1a.

  In this case, a connecting tool capable of freely connecting / disconnecting between the connecting cords 31a to 31d of the temperature measuring temperature sensors 30a to 30d and the fruit and vegetables internal temperature information fetching cord connected to the controller side is provided in the processing chamber 1. In order to prevent adverse effects due to a high humidity environment, the connection tool on the side of the fruit and vegetables internal temperature information fetching cord is arranged outside the processing chamber 1 and adjacent to the openable windows 29a to 29d on the processing chamber outer wall 1a. A small opening for passing the connection cords 31a to 31d of the temperature measuring temperature sensors 30a to 30d from the insecticidal treatment area 2 side to the outside of the processing chamber 1 is provided at the position where the temperature sensors 30a to 30d are opened. The connecting ends of the connecting cords 31a to 31d of the temperature measuring temperature sensors 30a to 30d are inserted through the small opening to the outside of the processing chamber 1 through the outer side of the processing chamber 1. It is configured to connect the connecting end of the connecting cord 31a~31d of the temperature detecting temperature sensor 30a~30d the fruit or vegetable internal temperature information fetching code side of the connector is desirable. Of course, the small opening provided in the processing chamber outer wall 1a for passing the connecting cords 31a to 31d is provided with an elastic sealing material for minimizing the flow of air inside and outside the processing chamber.

  Moreover, the differential pressure insecticidal cylinder 4 can be carried into and out of the insecticidal treatment area 2 by any means. For example, a transporting carriage equipped with a roller conveyor (or a driving roller conveyor) that can be connected to the free roller conveyor 7 in the insecticidal treatment area 2 through the opened differential pressure insecticide inlet / outlet 9a, 9b is used together. Between the roller conveyor of the transporting carriage and the free roller conveyor 7 in the insecticidal treatment area 2 in a state where the carriage is positioned at a predetermined position outside the opened differential pressure insecticidal tube entrances 9a and 9b. The differential pressure insecticide tube 4 may be transferred.

It is a cross-sectional top view of the whole processing chamber. It is a vertical side view of the processing chamber in use state. It is a perspective view which shows the pallet for conveyance and fruit and vegetables storage container which comprise a differential pressure insecticide cylinder. It is a vertical side view of a fruit and vegetables storage container. It is a cross-sectional top view of the whole processing chamber which shows the state which supported the differential pressure insecticide cylinder of the required number in series in the insecticidal treatment area. FIG. 6 is an enlarged longitudinal sectional side view showing details of a part in the state shown in FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Processing chamber 2 Insecticide processing area 3 Steaming or dry-heat generation area 4 Differential pressure insect cylinder 5a-5d Differential pressure insect cylinder support section 6a, 6b Roller rail 7 Free roller conveyor 8a, 8b Open / close door 9a, 9b Differential pressure insect cylinder Port 10 Vertical partition 11 Lower communication passage 12 Upper communication passage 13 Passage blocking door 16 Horizontal partition walls 17a to 17d Heating blower 18 Fan 19 Heaters 20a to 20d Exhaust ports 21a to 21d Inlet ports 22 and 23 Dampers 28a to 28d Water injection nozzles 29a to 29d Openable and closable windows 30a to 30d Temperature detecting sensor 32 Humidifying means 33a to 33f Humidifying nozzle 37 Opening 38a, 38b Guide rail 40 Carrying pallet 41 Vegetable storage container 42 Fork insertion hole 43, 44 Vent hole 45 Insecticide target Fruits and vegetables 46 Packing 47a-47d Temperature sensor 4 8 Humidity sensor

Claims (8)

A plurality of differential-pressure insecticide tubes that contain fruits and vegetables are placed in the processing chamber, and steam or dry heat whose temperature and humidity are adjusted is forced to flow through the differential-pressure insecticide tubes from the bottom to the top. a fruit or vegetable insecticide apparatus that performs insecticide treatment for fruits or vegetables in the cylinder, the processing chamber, and insecticide treatment areas in which a plurality of difference crush insects barrel support compartments in series, in parallel with this difference crush insect barrel support section series direction A steam heat or dry heat generation area is provided, and the insecticidal treatment area and the steam heat or dry heat generation area are a lower flow path below the differential pressure insect tube supported by the differential pressure insect tube support section and the differential pressure insecticide. In the insecticidal treatment area, there are a plurality of heating air blowing means that communicate with each other in the upper flow path above the differential pressure insecticidal cylinder supported by the cylinder support section, and in the steaming or dry heat generation area, generate a heated airflow downward. So that it is located directly beside each differential pressure insecticide support section Is disposed, in the fruit or vegetable insecticide apparatus humidifying means for supplying moisture to the heated air stream circulating and insecticide treatment area and steaming or dry heat generating area is juxtaposed,
The said humidification means is an insecticidal apparatus for fruits and vegetables comprised with the humidification nozzle which sprays water toward the said upper flow path at the upper end part of an insecticidal treatment area . 2. The humidification nozzle is disposed at an appropriate interval along the series direction of the differential pressure insecticide tube support section, wherein the number of differential pressure insecticide cylinders supported in series in the insecticidal treatment area is greater than the number of differential pressure insecticide tubes. The insecticide apparatus for fruit and vegetables as described. At the upper end of the insecticidal treatment area, an exhaust port whose opening degree can be adjusted is disposed so as to be located immediately above each differential pressure insecticidal cylinder support section, and at the upper end of the steaming or dry heat generating area, each heating air blowing means The fruit and vegetable insecticidal apparatus according to claim 1, wherein an air inlet whose opening degree can be adjusted is provided so as to be positioned directly above the fruit. The insecticide for fruits and vegetables according to claim 3, wherein an openable / closable passage blocking door is additionally provided in an upper flow passage that connects the insecticidal treatment area and the steam or dry heat generation area . The insecticide for fruits and vegetables according to any one of claims 1 to 4, wherein water injection means for injecting water into each differential pressure insecticide tube support section is arranged on the upper end side of the insecticide treatment area. apparatus. A window that can be opened and closed at a position adjacent to the upper end of the differential pressure insecticide tube supported by each differential pressure insecticide tube support section is provided on the outer wall of the processing chamber forming the insecticidal treatment area. The insecticide for fruits and vegetables according to any one of the above. At the bottom of the insecticidal treatment area, there is provided a rectangular opening in plan view that is almost entirely covered by the required number of differential-pressure insect cylinders that are supported in series by each differential-pressure insect cylinder support section in a state adjacent to each other. The lower flow passage and the insecticidal treatment area are communicated with each other through an opening, and the differential pressure insecticide cylinder is slidably supported in the opening in the series direction of the differential pressure insecticide tube support section. A conveyor allowing the air flow from the top to the top is installed, and a differential pressure insecticidal tube outlet with a door that can be opened and closed is provided on the outer wall of the processing chamber adjacent to at least one of the front and rear ends of the conveyor . The insecticide for fruits and vegetables according to any one of claims 1 to 6. The differential pressure insecticide cylinder is composed of a transport pallet and a fruit and vegetable storage container stacked on the pallet so as to cover almost the entire surface thereof. The pallet has a unidirectional fork insertion hole and a fork insertion hole. A vertical vent hole provided on the entire surface including a region overlapping with the hole, the fruit and vegetable storage container includes a vertical vent hole on the bottom surface, and the differential pressure insecticide tube is a fork insertion hole of the pallet. Is loaded onto the conveyor in a direction parallel to the serial direction of the differential pressure insecticide tube in the insecticidal treatment area, and the open / close door of the differential pressure insecticide tube inlet / outlet has a differential pressure adjacent to the inside of the door when closed. The insecticide for fruits and vegetables according to claim 7 , wherein packing for closing a fork insertion hole of the pallet of the insecticide tube is attached .

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