JP2013188142A - Moving cultivation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a moving cultivation device that is capable of making the temperature of a medium appropriate without requiring a complex structure.SOLUTION: A magnetic flux generating device 61 is disposed near a moving cultivation device 1. The magnetic flux generating device 1 generates alternating magnetic fluxes when carrying an alternating current. A metallic plate 62 is disposed in each of a plurality of cultivation benches 40. The cultivation benches 40 pass near the magnetic flux generating device 61 when circulated and transferred by the moving cultivation device 1. The metallic plate 62 produces Joule heat because of an eddy current that flows inside as the alternating magnetic fluxes change. Culture soil in a planter 50 is heated by heat transferred from the metallic plate 62.

Description

  The present invention relates to a closed-loop mobile cultivation apparatus that circulates and transfers a plurality of cultivation benches that cultivate vegetables, flower buds, and the like.

  2. Description of the Related Art Conventionally, a cultivation apparatus that cultivates vegetables, flower buds and the like using a cultivation bench (bed) is known. For example, Patent Document 1 described below describes a closed-loop mobile cultivation apparatus that circulates and transfers a plurality of cultivation benches. Moreover, in patent document 2 mentioned later, a duct is arrange | positioned between the cultivation benches arranged in parallel, and the culture medium temperature is made suitable temperature by flowing the air blown from an air conditioner (air conditioner) into the duct. A cultivation device to be described is described.

JP 2010-57448 A Japanese Patent Laid-Open No. 11-275953

  In the mobile cultivation apparatus of Patent Document 1 described above, in order to realize high-density planting cultivation, the cultivation bench is horizontally circulated and moved in the transfer direction (vertical direction and lateral direction) without rotating the cultivation bench. For this reason, it is difficult to apply the technique of patent document 2 to the mobile cultivation apparatus of patent document 1 and to provide a duct between cultivation benches.

  Further, as other means for achieving an appropriate temperature of the culture medium, means for flowing water in a pipe provided between the cultivation benches using a hot water supply device, and means for providing each cultivation bench with an electric heater to generate heat However, in any means, since piping and wiring for the cultivation bench are required, it is difficult to apply to the mobile cultivation apparatus.

  In order to solve the above-described problems, an object of the present invention is to provide a mobile cultivation apparatus that can achieve an appropriate culture medium temperature without requiring a complicated structure.

  The invention according to claim 1 is a closed-loop mobile cultivation device that circulates and transfers a plurality of cultivation benches for cultivating vegetables, flower buds, etc., and a magnetic flux generator that generates alternating magnetic flux when energized with alternating current, and the alternating magnetic flux A heating element that generates heat, and the magnetic flux generator is arranged in the vicinity of the mobile cultivation apparatus, and the heating element is arranged in each of the cultivation benches.

  According to the said structure, each cultivation bench passes the vicinity of a magnetic flux generator, when it circulates by the mobile cultivation apparatus. At this time, the heating element generates Joule heat by an eddy current flowing inside as the alternating magnetic flux changes. That is, the heating element generates heat by induction heating. The soil in the cultivation bench is heated by the heat transmitted from the heating element. For this reason, it is possible to optimize the culture medium temperature without requiring a complicated structure such as piping or wiring. Therefore, also in the cultivation apparatus of the structure where a cultivation bench moves, the cultivation soil in a cultivation bench can be heated as needed.

  The invention according to claim 2 is the mobile cultivation apparatus according to claim 1, wherein the mobile cultivation apparatus includes a pair of conveyance apparatuses in which the conveyance directions of the cultivation bench are opposite to each other, and a terminal end of the one conveyance apparatus. And a pair of moving devices for moving the cultivation bench from the terminal end of the other conveying device to the starting end of the one conveying device, and moving the cultivation bench to the starting end of the other conveying device. The gist is that one or more generators are arranged on at least one side of the pair of transport devices.

  A conveyance apparatus conveys a cultivation bench to a conveyance direction for every predetermined time. On the other hand, the moving device quickly moves the cultivation bench from one transport device to the other transport device. For this reason, according to the said structure, the dielectric heating time of a heat generating body can be adjusted by changing the conveyance space | interval (time) of a cultivation bench suitably, and culture medium temperature can be raised to predetermined temperature (suitable temperature). Therefore, compared with the case where a magnetic flux generator is arrange | positioned at the moving apparatus side, the frequency | count of a cultivation bench can be reduced.

  Invention of Claim 3 is a mobile cultivation apparatus of Claim 2, The said heat generating body is comprised from the metal plate laid in the bottom part in the said cultivation bench, The said magnetic flux generator is the said conveying apparatus. The gist is that it is arranged at a position opposite to the cultivation bench.

  According to the said structure, since the Joule heat which arises in a metal plate can be directly transmitted to the cultivation soil in a cultivation bench, heating efficiency can be improved. Moreover, since a magnetic flux generator is arrange | positioned under a conveying apparatus, space saving of a mobile cultivation apparatus can be achieved.

  The invention according to claim 4 is the mobile cultivation apparatus according to claim 2 or 3, wherein the magnetic flux generator supplies the alternating current from an alternating current power source when an environmental temperature of the cultivation bench is lower than a predetermined temperature. The gist of the pair of conveying devices and the pair of moving devices is to circulate and transfer the cultivation bench until the environmental temperature is equal to or higher than the predetermined temperature.

  According to the above configuration, it is possible to easily maintain an appropriate temperature state of the culture medium. In addition, since unnecessary heating by the heating element can be suppressed, power saving can be achieved.

  The present invention provides a mobile cultivation apparatus that can achieve an appropriate culture medium temperature without requiring a complicated structure.

The schematic plan view which shows the structure of the mobile cultivation apparatus which is embodiment of this invention. The enlarged plan view which shows the structure of a conveying apparatus and a moving apparatus. The perspective view which shows the structure of a cultivation bench. Schematic which shows the structure of a temperature adjustment mechanism. The flowchart which shows operation | movement of a temperature adjustment mechanism.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the same reference numerals are given to the same portions or corresponding portions.

  With reference to FIG. 1, schematic structure of the mobile cultivation apparatus 1 which is embodiment of this invention is demonstrated. The mobile cultivation apparatus 1 is a closed-loop mobile cultivation apparatus that circulates and transfers a plurality of cultivation benches 40 that cultivate vegetables (fruit vegetables and leaf vegetables), flower buds, and the like in a highly dense planted state.

  As shown in FIG. 1, the mobile cultivation apparatus 1 includes a pair of transfer apparatuses 10, a pair of movement apparatuses 20, an irrigation apparatus 31, a control apparatus 32, a cultivation bench 40, a planter 50, and a temperature adjustment mechanism 60. Here, as is well known, the mobile cultivation apparatus 1 also includes various other peripheral devices (such as a power supply device). However, illustration and description are omitted because they are not related to the present invention.

  A pair of conveyance apparatus 10 has 10 A of forward path side conveyance apparatuses and 10 B of return path side conveyance apparatuses with which the conveyance direction of the cultivation bench 40 is mutually opposite. The forward path side conveyance device 10A conveys the cultivation bench 40 in the conveyance direction C1. The return path side conveyance apparatus 10B conveys the cultivation bench 40 in the conveyance direction C2. In the following, both the transport direction C1 and the transport direction C2 are referred to as “vertical direction C”.

  The pair of moving devices 20 includes a feeding-side moving device 20A that moves the cultivation bench 40 from the terminal end (conveying end position) of the outward-side conveying device 10A to the starting end (conveying start position) of the returning-side conveying device 10B, and the returning-side conveying device. A return-side moving device 20B that moves the cultivation bench 40 from the terminal end of 10B (conveyance end position) to the start end (conveyance start position) of the forward-path-side conveyance device 10A. The sending side moving device 20A moves the cultivation bench 40 in the moving direction M1. The return side moving device 20B moves the cultivation bench 40 in the moving direction M2. In the following, both the movement direction M1 and the movement direction M2 are referred to as “lateral direction M”.

  The forward path side transport device 10A and the return path side transport device 10B are arranged in parallel in a state separated by a predetermined distance in the lateral direction M. The feed side moving device 20A and the return side moving device 20B are arranged in parallel in a state of being separated by a predetermined distance in the vertical direction C.

  The starting end (conveyance start position) side of the forward-side transport device 10A faces the end (movement end position) side half of the return-side moving device 20B, and the terminal end (conveyance end position) side of the forward-side transport device 10A is It faces the start end (movement start position) side half of the side moving device 20A.

  The starting end (conveyance start position) side of the return path side transport apparatus 10B faces the end (movement end position) side half of the feed side moving apparatus 20A, and the end position (conveyance end position) side of the return path side transport apparatus 10B is returned. It faces the start end (movement start position) side half of the side moving device 20A.

  The forward-side transport device 10A and the feed-side moving device 20A are configured in a state where the cultivation bench 40 can be exchanged. The sending side moving device 20A and the return side conveying device 10B are configured in a state in which the cultivation bench 40 can be exchanged. The return path side conveyance device 10B and the return side movement device 20B are configured in a state in which the cultivation bench 40 can be exchanged. The return side moving device 20B and the forward path side conveying device 10A are configured in a state in which the cultivation bench 40 can be exchanged.

  That is, the mobile cultivation apparatus 1 is in the order of the forward path side transport apparatus 10A, the forward side transport apparatus 20A, the return path side transport apparatus 10B, the return side transport apparatus 20B, and the forward path side transport apparatus 10A (clockwise in the plan view of FIG. 1). The cultivation bench 40 is circulated and transferred.

  In the mobile cultivation apparatus 1, the vertical direction C and the horizontal direction M are both parallel to the horizontal plane (ground) (perpendicular to the direction of gravity), but the present invention is not limited to this. The vertical direction C and the horizontal direction M may be slightly inclined with respect to the horizontal plane as long as they do not hinder cultivation.

  With reference to FIGS. 1-4, the schematic structure of the mobile cultivation apparatus 1 is demonstrated.

  A pair of conveyance apparatus 10 shown by FIG. 1 and FIG. 2 has the same basic structure. Specifically, the forward path side transport device 10A and the return path side transport device 10B each include a framework composed of a large number of columns and frames, four rails 11, and a collection basket 12. For simplification of illustration, the illustration of the framework in FIGS. 1 and 2 is omitted.

  The rail 11 is comprised from the metal member long in the vertical direction C, for example. The rail 11 is formed in a V-shape that opens to the side of the planter 50 when viewed from the longitudinal direction C. Each of the rails 11 is arranged in the lateral direction M at an appropriate interval, and is supported by a framework composed of a number of columns and frames.

  The collection basket 12 is made of a plastic member that is long in the longitudinal direction C, for example. The collection basket 12 is formed in a half-angle cylindrical shape that opens to the side of the planter 50 when viewed in the longitudinal direction C. In the forward path side transport apparatus 10A, the recovery basket 12 is supported by a side frame facing the reverse path side transport apparatus 10B. In the return path side transport apparatus 10B, the recovery basket 12 is supported by a side frame that does not face the forward path side transport apparatus 10A.

  The pair of moving devices 20 have the same basic structure. Specifically, the feed-side moving device 20A and the return-side moving device 20B include a pair of conveyor frames 21, a drive sprocket 22, a driven sprocket 23, a conveyor chain 24, an electric motor 25, a mounting plate 26, an extrusion device 27, and Each has a stopper 28.

  The conveyor frame 21 is composed of a metal member that is long in the lateral direction M, for example. One end of the conveyor frame 21 is located on the start end (movement start position) side of each moving device 20, and the other end of the conveyor frame 21 is located on the end (movement end position) side of each moving device 20. The pair of conveyor frames 21 are arranged in parallel with a predetermined interval in the longitudinal direction C, and are supported by a plurality of legs (not shown).

  The drive sprocket 22 is rotatably supported at one end of the conveyor frame 21. The drive sprocket 22 rotates with the longitudinal direction C as the rotation axis direction. The driven sprocket 23 is rotatably supported at the other end of the conveyor frame 21. The driven sprocket 23 rotates with the longitudinal direction C as the rotation axis direction. That is, in the pair of conveyor frames 21, two drive sprockets 22 facing each other are provided at one end, and two driven sprockets 23 facing each other are provided at the other end.

  The conveyor chain 24 is stretched between one end and the other end of the conveyor frame 21. The conveyor chain 24 is wound around the drive sprocket 22 and the driven sprocket 23. That is, the pair of conveyor frames 21 is provided with two conveyor chains 24 substantially parallel to the vertical direction C.

  The electric motor 25 is connected to a drive shaft (not shown) of the drive sprocket 22. The electric motor 25 synchronizes and rotates two substantially parallel conveyor chains 24 in the same direction via the transmission system of the drive sprocket 22 and the driven sprocket 23 and the conveyor chain 24.

  The mounting plate 26 is attached across the two conveyor chains 24. The mounting plates 26 are arranged in parallel in the lateral direction M with appropriate intervals. The mounting plate 26 moves in the lateral direction M when the electric motor 25 is driven and the pair (two) of conveyor chains 24 are rotationally driven. That is, when the cultivation bench 40 is on the mounting plate 26, the cultivation bench 40 is moved in each movement direction (M1, M2) by each moving device 20.

  The extrusion device 27 is a direct acting actuator such as an electromagnetic solenoid or an air cylinder, for example, and is configured to expand and contract in multiple stages. The extrusion device 27 is provided between the intermediate portion and the end (movement end position) of each moving device 20. A laterally long (longitudinal direction is the lateral direction M) contact bar 27 </ b> B that contacts the cultivation bench 40 is connected to the distal end side of the piston rod 27 </ b> A constituting the extrusion device 27.

  The extrusion device 27 is extended in multiple stages, thereby bringing the contact bar 27B into contact with the side surface of the cultivation bench 40 at the end (movement end position) side half of the return-side moving device 20B, and passing the cultivation bench 40 forward. Push out toward the side transfer device 10A. Thereby, the plurality of cultivation benches 40 on the forward path side conveyance device 10A successively collide in a ball shape. Then, the cultivation bench 40 at the terminal end (conveyance end position) of the forward path side transport device 10A is pushed out to the starting end (movement start position) side half of the feed side moving device 20A.

  In addition, the extrusion device 27 is extended in multiple stages, thereby bringing the contact bar 27B into contact with the side surface of the cultivation bench 40 at the end (movement end position) side half of the feeding-side moving device 20A. Is pushed out toward the return path side conveying apparatus 10B. As a result, the plurality of cultivation benches 40 on the return path side conveyance device 10 </ b> B collide one after another in a ball shape. And the cultivation bench 40 in the termination | terminus (conveyance end position) of the return path side conveying apparatus 10B is pushed out to the start end (movement start position) side half part of the return side moving apparatus 20B.

  The stopper 28 is provided between the start end (movement start position) of each moving device 20 and the intermediate portion. The stopper 28 regulates the movement in the vertical direction C of the cultivation bench 40 pushed out to the half of the starting end side of each moving device 20.

  The irrigation device 31 and the control device 32 are provided in the middle part (between the start and end points) of the feed-side moving device 20A. The irrigation device 31 sprays water toward the cultivation bench 40 that is moved in the movement direction M1 by the feed side moving device 20A. The control device 32 sprays a control agent or a chemical solution toward the cultivation bench 40 that is moved in the movement direction M1 by the feed side moving device 20A.

  Here, in the mobile cultivation apparatus 1, the operator's work space is set in a space facing the return side movement apparatus 20B (particularly, a space near the return path side conveyance apparatus 10B). That is, the work space is arranged at a position farthest from the irrigation device 31 and the control device 32. The worker performs various works (for example, harvesting work, weeding work, pruning work, planter 50 replacement work, etc.) in the work space. For this reason, it is possible to reliably prevent the control agent and the chemical solution from adhering to the worker in the work space.

  As shown in FIG. 3, the cultivation bench 40 includes a frame 41, wheels 42, a receiving basket 43, a pair of restriction arms 44, a support arm 45, and an IC (Integrated Circuit) tag 46.

  The frame frame 41 is formed in a box frame shape that is long in the lateral direction M. The frame frame 41 includes an upper frame 47, a lower frame 48, and a connection frame 49 that connects the upper frame 47 and the lower frame 48. The frame 41 houses a planter 50 described later.

  The wheel 42 is attached to the lower surface side of the lower frame 48, a total of four sets of two (see FIG. 4). A total of four sets of wheels 42 are arranged side by side in the lateral direction M of the cultivation bench 40 (frame frame 41) at an appropriate interval in accordance with the arrangement width of the rails 11 of each conveyance device 10. The wheel 42 easily guides the plurality of cultivation benches 40 to each moving device 20 without being derailed by the rail 11 having a V-shaped cross section.

  In addition, you may provide the sliding body instead of the wheel 42 in each conveyance apparatus 10 side. Moreover, the sliding body provided in the cultivation bench 40 side or each conveyance apparatus 10 side is not limited to the wheels 42 but may have another structure such as a roller, a slider, or a roller.

  The receiving rod 43 is provided on the upper surface side of the lower frame 48. The receiving rod 43 collects excess water and chemicals discharged from the lower surface side of the planter 50. The water and the chemical solution collected in the receiving basket 43 of each cultivation bench 40 are collected and collected by the collection basket 12 (see FIG. 1) extending along the longitudinal direction C of each transport device 10.

  The restriction arm 44 is formed in an L shape (see FIGS. 1 and 2). The pair of regulating arms 44 can be attached to and detached from the upper frame 47 with one extending portion protruding in the transport direction C2 (return side moving device 20B side) and the other extending portion facing each other in the lateral direction M. Is attached.

  For this reason, in a state where the pair of regulating arms 44 are in contact with the cultivation bench 40 adjacent in the vertical direction C, an appropriate interval (for example, about 500 mm) is provided between the adjacent cultivation benches 40 along the vertical direction C. Will open.

  Here, when the restriction arm 44 is configured to be detachable as described above, the arrangement interval between the adjacent cultivation benches 40 can be changed, and the cultivation bench 40 can be added or reduced. It is possible to increase or decrease the cultivation bench 40 depending on the type.

  Further, the structure of the restriction arm 44 is not limited to the above-described shape. For example, from the respective cultivation benches 40 so as to be appropriately spaced along the longitudinal direction (longitudinal direction C) of each moving device 20 between the adjacent cultivation benches 40 in a state of being in contact with the adjacent cultivation benches 40. Any projecting structure may be used.

  The support arm 45 is provided on the upper frame 47. A plurality of support arms 45 are arranged between the pair of restriction arms 44. The support arm 45 protrudes in the same direction (conveying direction C2) as the pair of regulating arms 44.

  Although not shown in detail, a wire rod is tied to a fixing hole formed in the protruding piece portion of the pair of restricting arms 44, and a middle portion of the wire rod is inserted into a guide groove formed on the upper surface of each support arm 45 from above. Hook and put a net on these, for example. The portion of the net is supported from below by a pair of restriction arms 44, a plurality of support arms 45, and wire rods, and protects a portion that has extended outside the planter 50 in vegetables or florets being cultivated.

  The IC tag 46 is provided at the lower surface side central portion of the lower frame 48. The IC tag 46 stores (reads and writes) various types of information such as vegetables and flowers cultivated on the cultivation bench 40. The use of the IC tag 46 improves the traceability of vegetables and flowers.

  The planter 50 is composed of a box-like container that is open on the upper surface side and is long in the lateral direction M. The planter 50 accommodates soil for cultivation (culture soil), and a drain hole (not shown) for discharging excess water and chemicals to the outside is formed on the bottom surface thereof. At the edge of the upper surface of the planter 50 in the horizontal direction M, a locking piece 51 that engages with the upper frame 47 is formed. The planter 50 is supported by the cultivation bench 40 when the locking piece 51 is hooked and engaged with the upper frame 47. The planter 50 has a metal plate 62 to be described later.

  As shown in FIGS. 1 and 4, the temperature adjustment mechanism 60 includes a magnetic flux generator 61 and a metal plate 62.

  The magnetic flux generator 61 includes a coil 71, an AC power source 72, and a switch 73. The magnetic flux generator 61 is connected to a controller 81 that controls each part of the mobile cultivation device 1. The magnetic flux generator 61 is arranged in the vicinity of the mobile cultivation device 1. Specifically, the magnetic flux generation device 61 includes a middle part between the start end (conveyance start position) and the end (conveyance end position) of the forward path side transport apparatus 10A, and the start end (conveyance start position) of the return path side transport apparatus 10B. And a terminal portion (conveyance end position) in the middle (see FIG. 1). More specifically, the magnetic flux generator 61 is disposed at a position facing the cultivation bench 40 with the rail 11 interposed therebetween.

  The metal plate 62 is disposed on each of the plurality of cultivation benches 40. Specifically, the metal plate 62 is laid on the bottom of the planter 50. The metal plate 62 is disposed inside the planter 50 in a state where a discharge hole (not shown) formed on the bottom surface of the planter 50 is not blocked.

  The operation of the temperature adjustment mechanism 60 will be described with reference to FIGS. Under the control of the control device 81, the temperature adjustment mechanism 60 performs temperature adjustment so that the environmental temperature of each cultivation bench 40 does not become lower than a predetermined temperature. Here, the environmental temperature in the present embodiment is a radiation temperature of the planter 50. In addition, the above-mentioned environmental temperature is not limited to the radiation temperature of the planter 50, For example, the culture medium temperature in the planter 50 may be sufficient.

  Specifically, for example, the control device 81 receives the temperature from the temperature measuring device 82 (FIG. 4) disposed on the upstream side of the magnetic flux generator 61, that is, on the start end side of the transport device 10 relative to the magnetic flux generator 61. The temperature information of the planter 50 in the vicinity of the measuring device 82 is received. And the control apparatus 81 determines whether environmental temperature is less than predetermined temperature based on the received temperature information (step S1 of FIG. 5). The temperature measuring device 82 is preferably, for example, a radiation thermometer (non-contact thermometer) that measures the temperature of an object by measuring the intensity of infrared or visible light emitted from the object.

  When the environmental temperature is lower than the predetermined temperature (step S1: YES in FIG. 5), the control device 81 drives the magnetic flux generator 61 (FIG. 4) (step S2 in FIG. 5). Specifically, the switch 73 (FIG. 4) is switched from OFF to ON in the magnetic flux generation device 61 under the control of the control device 81. Thereby, the coil 71 (FIG. 4) is energized by the alternating current supplied from the alternating current power source 72 to generate an alternating magnetic flux.

  Here, the mobile cultivation apparatus 1 starts circulating and transferring the plurality of cultivation benches 40 when operating the magnetic flux generation apparatus 61.

  Of the metal plates 62 laid on the bottom of the planter 50, the metal plate 62 located in the alternating magnetic flux generated from the magnetic flux generator 61 has a Joule heat due to the eddy current flowing inside as the alternating magnetic flux changes. Produce. That is, the metal plate 62 generates heat by induction heating. The soil in the planter 50 is heated by the heat transmitted from the metal plate 62.

  After driving the magnetic flux generator 61, the controller 81 receives the temperature information of the planter 50 again. And the control apparatus 81 determines whether environmental temperature became more than predetermined temperature based on the received temperature information (step S3 of FIG. 5).

  When the environmental temperature is equal to or higher than the predetermined temperature (step S3 in FIG. 5: YES), the control device 81 stops the magnetic flux generator 61 (step S4 in FIG. 5). Specifically, the switch 73 is switched from ON to OFF in the magnetic flux generator 61 under the control of the control device 81. As a result, the coil 71 is in a non-energized state, and the generation of the alternating magnetic flux is stopped.

  Here, the mobile cultivation apparatus 1 stops the circulatory transfer of the plurality of cultivation benches 40 as the magnetic flux generator 61 is stopped.

  The metal plate 62 located in the alternating magnetic flux generated from the magnetic flux generator 61 stops heat generation by induction heating as the alternating magnetic flux is stopped. Thereby, the heating of the cultivation soil in the planter 50 stops.

  When the environmental temperature is not lower than the predetermined temperature (step S1: NO in FIG. 5), the control device 81 returns to immediately before step S1 without driving the magnetic flux generation device 61 (FIG. 4), and the room temperature. Receive the information again.

  Further, when the environmental temperature is not equal to or higher than the predetermined temperature (step S3 in FIG. 5: NO), the control device 81 continues to drive the magnetic flux generator 61 and returns immediately before step S3 to perform the process of step S3. Try again.

  The temperature adjustment mechanism 60 performs the process of the above-mentioned step S1-step S4 suitably, and performs temperature adjustment so that the environmental temperature of each cultivation bench 40 does not become less than predetermined temperature.

  The temperature adjustment mechanism 60 is preferably set so as to operate at night when the environmental temperature tends to be lower than a predetermined temperature. Further, it is desirable that the irrigation device 31 and the control device 32 are not operated during the operation of the temperature adjustment mechanism 60.

(Effect of embodiment)
The mobile cultivation apparatus 1 of this embodiment has the following effects.

  (1) The magnetic flux generator 61 is arranged in the vicinity of the mobile cultivation device 1. The magnetic flux generator 61 generates an alternating magnetic flux when an alternating current is applied. The metal plate 62 is disposed on each of the plurality of cultivation benches 40.

  For this reason, when each cultivation bench 40 is circulated and transferred by the mobile cultivation device 1, it passes near the magnetic flux generation device 61. At this time, the metal plate 62 generates Joule heat by an eddy current flowing inside as the alternating magnetic flux changes. That is, the metal plate 62 generates heat by induction heating. The soil in the planter 50 (cultivation bench 40) is heated by the heat transmitted from the metal plate 62. For this reason, it is possible to optimize the culture medium temperature without requiring a complicated structure such as piping or wiring. Therefore, also in the cultivation apparatus of the structure where the cultivation bench 40 moves, the cultivation soil in a cultivation bench can be heated as needed.

  (2) The mobile cultivation apparatus 1 includes a pair of conveyance apparatuses 10 in which the conveyance directions of the cultivation bench 40 are opposite to each other, and the other conveyance apparatus 10 (from the end of one conveyance apparatus 10 (for example, the forward conveyance apparatus 10A)). For example, it has a pair of moving devices 20 that move the cultivation bench 40 to the start end of the return path side transfer device 10B) and move the cultivation bench 40 from the end of the other transfer device 10 to the start end of the one transfer device 10. The magnetic flux generator 61 is configured such that the magnetic flux generator 61 is a midway between the start end (transport start position) and the end (transport end position) of the forward path side transport apparatus 10A, and the start end (transport start position) of the return path side transport apparatus 10B. ) And the end (conveyance end position).

  The conveyance apparatus 10 conveys the cultivation bench 40 to a conveyance direction (C1, C2) for every predetermined time. On the other hand, the moving device 20 quickly moves the cultivation bench 40 from one transport device 10 to the other transport device 10. For this reason, by appropriately changing the conveyance interval (time) of the cultivation bench 40, the dielectric heating time of the metal plate 62 can be adjusted, and the culture medium temperature can be raised to a predetermined temperature (appropriate temperature). Therefore, compared with the case where the magnetic flux generator 61 is arrange | positioned at the moving apparatus 20 side, the frequency | count of the circumference | surroundings of the cultivation bench 40 can be reduced.

  (3) The metal plate 62 is laid on the bottom of the planter 50. The magnetic flux generator 61 is arranged at a position facing the cultivation bench 40 with the rail 11 interposed therebetween. For this reason, the Joule heat which arises in the metal plate 62 can be directly transmitted to the cultivation soil in the cultivation bench 40, and heating efficiency can be improved. Moreover, since the magnetic flux generation device 61 is disposed below the transport device 10, space saving of the mobile cultivation device 1 can be achieved.

  (4) When the environmental temperature is lower than the predetermined temperature, the control device 81 switches the switch 73 of the magnetic flux generator 61 from OFF to ON and supplies an AC current from the AC power source 72 to the coil 71. The mobile cultivation apparatus 1 starts circulating and transferring the plurality of cultivation benches 40 as the magnetic flux generation apparatus 61 is driven (generation of alternating magnetic flux). When the environmental temperature becomes equal to or higher than the predetermined temperature, the control device 81 switches the switch 73 of the magnetic flux generation device 61 from ON to OFF, puts the coil 71 in a non-energized state, and stops the generation of the alternating magnetic flux. The mobile cultivation apparatus 1 stops the circulation transfer of the plurality of cultivation benches 40 with the stop of the magnetic flux generation apparatus 61 (the generation stop of the alternating magnetic flux). For this reason, it is possible to easily maintain an appropriate temperature state of the culture medium. Moreover, since unnecessary heating by the metal plate 62 can be suppressed, power saving can be achieved.

  In addition, the structure of each part (each apparatus) of the mobile cultivation apparatus 1 is not limited to embodiment of illustration, A various change is possible in the range which does not deviate from the meaning of this invention. For example, the circulation transfer direction of the cultivation bench 40 may be counterclockwise in a plan view of FIG. Moreover, when operating the magnetic flux generator 61, when the circulation transfer of the some cultivation bench 40 is started and the frequency | count of the said circulation movement turns into predetermined frequency (for example, 2 to 3 times), a magnetic flux generator. While stopping 61, circulation transfer of a plurality of cultivation benches 40 may be stopped.

  DESCRIPTION OF SYMBOLS 1 ... Mobile cultivation apparatus, 10 ... Conveyance apparatus, 10A ... Outward side conveyance apparatus, 10B ... Return path side conveyance apparatus, 11 ... Rail, 12 ... Collection basket, 20 ... Movement apparatus, 20A ... Feeding side movement apparatus, 20B ... Return side Moving device, 21 ... conveyor frame, 22 ... driving sprocket, 23 ... driven sprocket, 24 ... conveyor chain, 25 ... electric motor, 26 ... mounting plate, 27 ... extrusion device, 27A ... piston rod, 27B ... contact bar, DESCRIPTION OF SYMBOLS 28 ... Stopper, 31 ... Irrigation device, 32 ... Control device, 40 ... Cultivation bench, 41 ... Frame frame, 42 ... Wheel, 43 ... Receptacle, 44 ... Restriction arm, 45 ... Support arm, 46 ... IC tag, 47 ... Upper frame, 48 ... lower frame, 49 ... connecting frame, 50 ... planter, 51 ... locking piece, 60 ... temperature adjusting mechanism, 61 ... magnetic flux generator, 62 ... metal plate 71 ... Coil, 72 ... AC power supply, 73 ... Switch, 81 ... Control device, 82 ... Temperature measuring device, C ... Longitudinal direction, C1 ... Conveying direction, C2 ... Conveying direction, M ... Lateral direction, M1 ... Moving direction, M2 …Direction of movement.

Claims (4)

In a closed-loop mobile cultivation device that circulates multiple cultivation benches that cultivate vegetables, flowers, etc.,
A magnetic flux generator that generates an alternating magnetic flux when an alternating current is applied, and a heating element that generates heat by the alternating magnetic flux,
Arranging the magnetic flux generator in the vicinity of the mobile cultivation device,
The mobile cultivation apparatus, wherein the heating element is disposed on each of the cultivation benches. The mobile cultivation apparatus is
A pair of conveying devices in which the conveying directions of the cultivation bench are opposite to each other;
A pair of moving devices for moving the cultivation bench from the terminal end of the one conveying device to the starting end of the other conveying device and moving the cultivation bench from the terminal end of the other conveying device to the starting end of the one conveying device When,
Have
The mobile cultivation apparatus according to claim 1, wherein one or more of the magnetic flux generation devices are arranged on at least one side of the pair of transport devices. The heating element is composed of a metal plate laid on the bottom in the cultivation bench,
The said magnetic flux generator is arrange | positioned in the position facing the said cultivation bench on both sides of the said conveying apparatus, The mobile cultivation apparatus of Claim 2 characterized by the above-mentioned. The magnetic flux generator supplies the alternating current from an alternating current power source when the environmental temperature of the cultivation bench is lower than a predetermined temperature,
4. The mobile cultivation apparatus according to claim 2, wherein the pair of transport apparatuses and the pair of movement apparatuses circulate and transfer the cultivation bench until the environmental temperature becomes equal to or higher than the predetermined temperature.

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