JP2015200461A - Cold temperature load assortment work bench - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cold temperature load assortment work bench capable of classification working when the whole load is placed in a low temperature atmosphere while obtaining sufficient cooling effect and restraining equipment cost.SOLUTION: A cold temperature load assortment work bench comprises: a work bench body 2 having an operation room 6 capable of loading and unloading through an opened front face 3 and lateral faces and being surrounded by a bottom face part 2b, a back face part 2c, a top plate part 2d, and both the right and left lateral faces; load transfer means 10 provided on the bottom face part 2b of the operation room 6 for moving the load along a longer direction of the operation room 6; an evaporator 15 and an air blower 14 that are disposed below the load transfer means 10 and constitute a refrigerating-cycle; a cold air circulation duct 5 for circulating cold air, which is blown by the air blower 14 to exchange heat in the evaporator 15, upward from the back face lower part of the operation room 6; a cold air blowing out port 18 opened on the cold air circulation duct 5 for blowing the cold air toward the operation room 6; and a suction port 12 provided at a top edge side part of a front face part 2a of the operation room 6 for guiding the cold air blown from the cold air blowing out port 18 to the air blower 14.

Description

  Embodiments of the present invention relate to a low-temperature baggage sorting work table that enables sorting of packages to be stored at a low temperature in a low-temperature atmosphere.

  In order to sort packages that should be stored at low temperatures, for example, for multiple destinations (shipping areas), a large refrigeration room is provided, a work table is stored in the refrigeration room, and a number of personnel are placed in front of the work table. Although it is sufficient to arrange and work, the capital investment for providing the refrigerator compartment becomes extremely large.

It is also conceivable to use a low-temperature conveyor device that cools only the object. This type of device has a heat insulation box that extends in the longitudinal direction and opens at the upper surface, and has a cold air duct that extends in the longitudinal direction in the heat insulation box, and the cold air duct can be closed at a suitable place of the cold air duct. A motorized valve is provided.
By closing the necessary motor-operated valve, it is possible to work by cooling only a part of the necessary conveyor without cooling the entire work chamber, so that energy saving can be achieved.

JP 2001-108346 A

  However, when such a conveyor device is used, it is sufficient if the baggage has a small vertical dimension. However, if the baggage is tall and protrudes from the upper surface opening of the heat insulation box, the cold air blown out from the cold air duct is reduced. The cooling effect is weakened without reaching the top of the luggage. When the vertical dimension of the heat insulation box is made high and the distance from the conveyor to the upper surface opening is increased, workability is deteriorated for loading / unloading the luggage into / from the conveyor.

  The cold air duct is long, and it must be expected that the temperature rises to some extent in a state where the cold air sent from one end reaches the other end. Further, since cold air is blown from one side of the load and the cold air blown from the other side is sucked, only one side of the load is cooled, and the other side is not cooled so much. Occurs.

  Under such circumstances, there is a need for a low-temperature baggage sorting work table that can perform sorting work by placing the entire baggage in a low-temperature atmosphere to obtain a sufficient cooling effect and reduce facility costs. .

  According to the low temperature luggage sorting work table of the present embodiment, the work table is provided with a work room in which luggage can be taken in and out from the opened front and side surfaces, and is surrounded by a bottom surface portion, a back surface portion, a top plate portion, and left and right side plate portions. A main body, a load moving means provided on the bottom surface of the work chamber in the work table main body and capable of moving the load along the longitudinal direction of the work chamber, an evaporator constituting a refrigeration cycle disposed below the load moving means, and A blower, a cool air circulation duct that circulates from the lower part of the back of the work room to the upper part as cold air generated from the air blown from the blower and heat-exchanged by the evaporator, and opened to the cool air circulation duct and led to the cold air circulation duct. A cooling outlet that blows the cool air into the working chamber, and a suction inlet that is provided at the upper end of the front portion of the working chamber and sucks the cold air blown from the cooling outlet and guides it to the blower.

The external appearance perspective view of the low-temperature package sorting work table based on this embodiment. The longitudinal cross-sectional view of the outline of the low-temperature package sorting work table based on the embodiment. The schematic longitudinal cross-sectional view of the low-temperature package sorting work bench | platform based on the modification of the embodiment. The perspective view of the goods movement means based on the modification. The schematic front view of the low-temperature baggage sorting work table according to still another modification. The figure which shows the state which connected the two low-temperature baggage sorting work platforms which concern on another modification.

Hereinafter, the present embodiment will be described with reference to the drawings.
FIG. 1 is an external perspective view of a low temperature luggage sorting work table, and FIG. 2 is a schematic longitudinal sectional view of the low temperature luggage sorting work table.

  The low-temperature baggage sorting work table is formed by integrally mounting a work table body 2 having a heat insulating structure on a base 1 formed in a box shape with a thin steel plate at the bottom. The base 1 and the workbench main body 2 are substantially rectangular in a front view and a plan view, and the positions of the back parts of the workbench main body 2 are the same, but the front part 2a of the workbench main body 2 is the front part 1a of the base 1. Protrudes further forward. In other words, the front surface portion 1 a of the base 1 is located on the back side of the front surface portion 2 a of the worktable main body 2. Further, the base 1 and the work table main body 2 have a horizontally long shape.

The worktable body 2 is substantially U-shaped when viewed from the side, and includes a front surface portion 2a, a bottom surface portion 2b, a back surface portion 2c, a top plate portion 2d, and left and right side plate portions 2e. .
As a heat insulating structure of the worktable body 2, the front surface portion 2a, the back surface portion 2c, the top plate portion 2d, and the left and right side plate portions 2e constituting the outer shell are made of a flat metal plate or a bent product thereof, Thermal insulation is affixed.

  The front surface 2a, the back surface 2c, the top plate portion 2d, and the outer surfaces (exterior surfaces) of the left and right side plate portions 2e are painted or mirror-finished, hairline finished, etc., in order to improve the appearance. Further, the bottom surface portion 2b is formed of a heat insulating resin material as will be described later.

  As shown in FIG. 2, the front end portion of the top plate portion 2d is a front upper side portion 2dd that is bent downward, and the front opening 3 is formed between the upper end portion of the front portion 2a. Edges of the left and right side plate portions 2e are provided between the bottom surface portion 2b at substantially the same height as the upper end of the front surface portion 2a, and are provided on the inner side with a predetermined distance from the back surface portion 2c and the top plate portion 2d. And provided between the front upper side 2dd.

  The bottom surface portion 2b that forms the bottom surface of the workbench main body 2 is formed to have a predetermined height dimension from the front surface portion 2a to the middle portion between the rear surface portion 2c, but is further lowered from the middle portion to the rear surface portion 2c. It is formed. A partition wall 4 and a cool air circulation duct 5 are connected to the bottom surface portion 2b between the upper end portion of the front surface portion 2a and the back surface portion 2c.

  The worktable body 2 is placed on the base 1. Since the base 1 has no member that covers the top surface and is open, when the worktable main body 2 is attached to the base 1, the bottom surface 2 b of the worktable main body 2 is a ceiling that covers the top surface of the base 1. Also functions as a plate.

  The left and right side portions of the partition wall 4 are closely fixed to the left and right side plate portions 2 e of the work table main body 2. And the front side edge part which covers the upper end side part of the front part 2a and the back side edge part connected to the duct 5 for circulating cold air are formed at the same height, but the intermediate part excluding these both ends is formed with a recess. The recessed portion 4a is formed.

  A space portion surrounded by the partition wall 4 and the cool air circulation duct 5 inside the work table body 2 is a work chamber 6, which has a front opening 3 and both left and right end portions excluding the left and right side plate portions 2 e. 7 is opened. Therefore, the front and side surfaces of the work chamber 6 are open.

  On the inner side of the upper surface of the cold air circulation duct 5 constituting the ceiling of the work room 6, there is provided a lighting fixture 8 made up of fluorescent lamps or LEDs constituting the illumination means, and illuminates the work room 6 brightly to every corner. , Making it easier to work early in the morning and at night.

  The partition wall 4 on the bottom of the work chamber 6 has a dish shape, and a large number of roller conveyors 10 serving as load moving means are disposed on the recessed portion 4 a recessed below the work chamber 6. It is provided so that it can rotate freely.

  If it demonstrates, the bearing plate 11 will be provided in the intermediate part of the front-back depth direction of the recessed part 4a, and the inside of the recessed part 4a will be divided into the front and back. The shaft portion of the roller conveyor 10 on the front row side is supported by the front wall of the partition recess 4a and the bearing plate 11, and the shaft portion of the roller conveyor 10 on the rear row side is supported by the rear wall of the bearing plate 11 and the recess 4a. . Accordingly, the roller conveyors 10 are arranged in parallel in the front and rear rows along the partition recesses 4a.

  Further, a suction port 12 including a large number of holes is provided between the front end of the partition wall 4 which is the upper end side of the front surface 2a in the work chamber 6 and the front end of the recessed portion 4a. The suction port 12 allows communication between the inside of the working chamber 6 and the space between the partition wall 4 and the bottom surface portion 2b.

  A space between the bottom surface portion 2b of the worktable body 2 and the partition wall 4 and the left and right side plate portions 2e is referred to as a heat exchange chamber 13. The front end of the heat exchange chamber 13 communicates with the front opening 3 of the work chamber 6 through the suction port 12, and the rear end of the heat exchange chamber 13 communicates with the cold air circulation duct 5.

  The blower 14 and the evaporator 15 that constitutes the refrigeration cycle are arranged to face each other at a position that is further lowered from the intermediate portion that forms the bottom surface portion 2b of the workbench main body 2 of the heat exchange chamber 13 to the back surface portion. The support that supports the blower 14 is mounted on the bottom surface portion 2b, but the evaporator 15 is spaced from the bottom surface portion 2b and the back surface portion 2c via a support tool (not shown) attached to the bottom surface portion 2b. Supported through.

  The bottom surface portion 2 b has a function of a drain pan that receives drain water dripped from the evaporator 15. The drain water discharged to the bottom surface portion 2b is drained to the lower base 1 from a drain port provided at a lower position of the bottom surface portion 2b (not shown). This drain water is discharged from the base 1 as it is. When drain water is not desired to be discharged to the outside as it is, a method of providing a drain water evaporating function in the base 1 or temporarily storing it in a tank may be used.

  The bottom surface portion 2b is a top plate of the base 1 as described above. The base 1 contains electrical components such as a compressor 23, which will be described later, and it is desirable to prevent the inside from being splashed with water as much as possible. For this reason, the bottom surface 2b is formed of a heat insulating material such as a foamed resin material. As a result, it is possible to prevent the condensed water from adhering to the lower surface (base 1) side of the bottom surface portion 2b, and it is possible to prevent the condensed water from dripping inside the base 1.

  On the other hand, the duct 5 for circulating cold air is composed of a back surface portion 2c, a top plate portion 2d, left and right side plate portions 2e, a partition plate 16 and a duct plate 17 of the workbench main body 1, and as will be described later, The main cold air circulation duct 5A on the side and the auxiliary cold air circulation duct 5B on the back side have a two-layer structure.

  That is, the lower end portion of the partition plate 16 is in close contact with the end surface on the back side of the evaporator 15 to cover the entire back surface, and is provided with a gap from the work table main body back surface portion 2c. The partition plate 16 is extended upward with the back surface portion 2c and the gap, further bent with the top plate portion 2d and the gap, and reaches the front side portion 2dd of the top plate portion 2d. The left and right end portions of the partition plate 16 are closely attached to the left and right side plate portions 2e.

  The lower end portion of the duct plate 17 that forms the back surface and the upper surface of the work chamber 6 is bent integrally with the rear end portion of the partition wall 4. The partition plate 16 extends upward in parallel with a gap, and maintains the same distance to the front side portion 2bb of the top plate portion 2d so as to constitute the ceiling portion of the work chamber 6. The left and right side portions of the duct plate 17 are also in close contact with the left and right side plate portions 2e.

  Therefore, the cold-air circulation duct 5 includes a space portion surrounded by the partition plate 16, the duct plate 17, and the left and right side plate portions 2e, and the partition plate 16, the back surface portion 2c, the top plate portion 2d, and the left and right side plate portions 2e. The former is called a main cold air circulation duct 5A, and the latter is called an auxiliary cold air circulation duct 5B.

  The upper end portion of the evaporator 15 is sandwiched between the back wall of the recessed portion 4a and the partition plate 16, and is opened to the main cold air circulation duct 5A. Further, as described above, the lower end portion of the partition plate 16 is in close contact with the end surface on the back side of the evaporator 15, while the lower end surface of the evaporator 15 is disposed via the bottom surface 2b and the gap. Only the auxiliary cold air circulation duct 5B is opened.

  A cooling outlet 18 including a plurality of holes is provided on the back surface of the duct plate 17, and the working chamber 6 and the main cold air circulation duct 5 </ b> A are communicated with each other through the cooling outlet 18. By driving the blower 14, the cool air guided to the main cool air circulation duct 5 </ b> A is blown out to the working chamber 6 through the cooling air outlet 18, but the cool air guided to the auxiliary cold air circulation duct 5 </ b> B is cooled by the cooling air outlet. 18 will not be blown out.

  An air curtain outlet 20 that is inclined obliquely downward toward the inlet 12 is provided on the front side 2 d of the top plate 2 d of the partition plate 16 and the duct plate 17. The air curtain outlet 20 is formed with a large number of honeycomb-shaped openings, and communicates with the main cold air circulation duct 5A and the auxiliary cold air circulation duct 5B, so that the cold air led to both the ducts 5A and 5B. Will be blown out at the same time.

  On the other hand, the front plate 1a and the back plate 1b of the base 1 are made of so-called punching metal provided with a large number of holes. A condenser 21 is disposed at a position facing the front plate 1a inside the base 1, and a blower 22 is disposed with the condenser 21 as a suction side and the back plate 1b as a blow-out side.

  Further, a compressor 23 and valves and tanks (not shown) are arranged and connected to the evaporator 15 in the workbench main body 2 by piping, and these parts constitute a refrigeration cycle. In addition, a hole (not shown) through which refrigerant piping for connecting the evaporator 15 and the refrigeration cycle component on the base 1 side can be formed in the bottom surface portion 2b of the worktable body 2 described above.

  At the four corners of the bottom surface of the base 1, there are provided rotatable vehicles (so-called casters: registered trademarks) 24 that make the base 1 and the worktable body 2 movable, that is, the low-temperature luggage sorting worktable is movable. ing.

  This is a low-temperature baggage sorting work table configured as described above, and the refrigeration cycle equipment including the compressor 23 and the fans 14 and 22 are activated in advance and the lighting fixture 8 is turned on. The blower 14 disposed in the heat exchange chamber 13 sucks air from the front opening 3 through the suction port 12 and blows it to the evaporator 15. The evaporator 15 exchanges heat with the air that has been sent to change it into cold air.

  While the upper end portion of the evaporator 15 is open to the main cold air circulation duct 5 </ b> A, the rear end surface of the evaporator 15 is covered with the partition plate 16. The cold air that has circulated through the entirety is guided to the main cold air circulation duct 5A.

  Further, there is cold air that flows along the lower end portion of the evaporator 15, exchanges heat to become cold air, and is guided to the auxiliary cold air circulation duct 5 </ b> B through a gap between the partition plate 16 and the back surface portion 2 c. Since the cold air led here is only circulated through the lower end surface of the evaporator 15 and exchanged heat, it is not cooled so much and is somewhat higher in temperature than the cold air led to the main cold air circulation duct 5A.

  On the other hand, cooler cold air communicating with the main cold air circulation duct 5A is blown out from the cooling outlet 18 provided on the back surface of the duct plate 17 to the work chamber 6 to maintain the work chamber 6 in a low temperature atmosphere. Then, the cool air that has not been blown out from the cooling outlet 18 to the working chamber 6 circulates through the ceiling portion of the working chamber 6 and reaches the air curtain outlet 20.

  The cold air flowing through the auxiliary cold air circulation duct 5B is directly guided along the back surface portion 2c and the top plate portion 2d, reaches the air curtain outlet 20, and is blown out together with the cold air guided from the main cold air circulation duct 5A. A cold air curtain is formed in the front opening 3 of the work chamber 6.

  In the front opening 3 of the working chamber, cold air blown out from the auxiliary cold air circulation duct 5B, which is blown out from the auxiliary cold air circulation duct 5B, flows to the front side of the cooler cold air blown out from the main cold air circulation duct 5a. The cold wind. Therefore, even if an object enters and exits the work chamber 6 from the front opening 3 of the workbench main body 2, the air curtain is less affected by them.

  The cold air blown out from the cooling blowout port 18 and the cold air blown out from the air curtain blowout port 20 are guided from the front opening 3 of the work chamber to the suction port 12 and further sucked into the blower 14 in the heat exchange chamber 13. It circulates through the above system. The air blown out from the cooling outlet 18 on the back side of the work chamber 6 in the air curtain to the work chamber 6 is also sucked from the suction port 12 and circulated.

  In this manner, the above-described refrigeration cycle operation is performed in advance, and the sorting operation of the luggage N (hereinafter simply referred to as “luggage”) to be refrigerated / refrigerated is performed in a state where the working chamber 6 is in a low temperature atmosphere. .

  For example, the luggage N collected and transported in the freezer car is sequentially transferred from the freezer car to the work room 6 from the opening at one end of the work chamber 6 (for example, the opening at the left side end 7) using a chute. Send it in. The loaded luggage N is placed on the roller conveyor 10 at the bottom of the work chamber 6.

  As described above, since the refrigeration cycle operation is started in the work chamber 6, the atmosphere is low, and the entire baggage N is not exposed to the outside air and is cooled without causing partial cooling unevenness. Can maintain a low temperature state.

  As shown in FIG. 2, a worker M is waiting on the front surface of one end portion of the work chamber 6, and loads N loaded on the roller conveyor 10 after being taken down from the chute are sequentially placed on the other end portion (on the right side). Send out in the direction of the side edge. In front of the work chamber 6, a plurality of workers M stand by along with the workers M.

  Since it is desirable that as much luggage N as possible can be placed in the working chamber 6, the working chamber 6 preferably has a long horizontally long shape. However, if the lateral dimension is increased, a large place is required when not in use. Appropriate lateral dimensions are set in consideration of the above.

  In this state, the sorting work of the luggage N is performed. Each worker M is in charge of a destination (delivery area). A delivery slip P is attached to the upper surface of the package N, and the destination is described on it.

  The worker M reads the destination of the sending slip P, and takes out the baggage when the destination baggage N in charge is moved. Further, when a package N that is not the destination in charge is sent out, the package is sent out to the next.

  The worker loads the baggage N taken out as the destination in charge, separately on the freezing vehicle that is on standby. If a plurality of workers are made to wait for the same destination, and the loading work is performed on the refrigerated vehicle waiting from the work chamber 6 in turn, the luggage N is quickly and smoothly sorted.

  Even if the work is done outdoors, even if it is hot, if the stand-by freezer and the low-temperature baggage sorting work table are placed close to each other, the baggage N can be kept in a frozen / refrigerated storage state with little contact with the outside air. Maintained.

  Formed in the front opening 3 of the work chamber 6 is a cold air curtain in which the front side (worker M side) is at a certain low temperature and the back side (work chamber 6 side) is cooler and the temperature state is two layers. Therefore, even if the baggage is taken in and out of the work room 6 from the front opening 3 and the arm of the worker M is put in and out, the effect as a cold air curtain is hardly disturbed. The inside maintains a low temperature atmosphere.

  Since the lighting fixture 8 is attached to the top plate portion of the guide plate 17, which is the ceiling portion of the work chamber 6, and the interior of the work chamber 6 is brightly illuminated, the destination characters on the delivery slip P attached to the luggage N are easy to read and work It is possible to improve the performance.

  A heat exchange chamber 13 was formed in the upper part of the base 1, and a bottom surface portion of the work chamber 6 was formed in the upper part of the heat exchange chamber 13 to provide a roller conveyor 10 as a load moving means. The roller conveyor 10 is provided at a predetermined height from the ground G, so that the worker M who puts and removes the luggage N can work in an easy posture and can obtain an ideal height ergonomically.

Furthermore, since the front surface portion 1a of the base 1 is formed on the back side rather than the front surface portion 2a of the work table main body 2, one leg of the worker M can be put under the work table 2. For this reason, when the luggage N is taken in and out of the work chamber 6, the trunk of the worker M can be brought closer to the work chamber 6, and the fatigue level of the worker M can be reduced.
Since the rotatable vehicle 24 is attached to the bottom of the base 1, it is easy to move the low-temperature baggage sorting work table to a necessary place and separately store it in a warehouse or the like when not in use.

  While the left and right ends 7 of the work chamber 6 are open, a plurality of roller conveyors 10 are arranged in parallel at the bottom of the work chamber 6 so as to be rotatable in the longitudinal direction. Therefore, there is a possibility that the luggage N may be accidentally dropped on the ground G from either one of the left and right end portions 7 of the work chamber 6.

  In order to prevent such an accident, a flat stopper plate (indicated by a two-dot chain line in FIG. 2) 25 can be attached and detached detachably on either or both of the left and right sides of the work chamber 6. Keep it.

  That is, it is possible to prevent the luggage N from falling from one side by attaching the stopper plate 25 to the opposite side without attaching the stopper plate 25 to the side where the luggage N is carried from the freezer. If the stopper plate 25 can be attached to either of the left and right ends, the positional relationship between the freezer truck for carrying the luggage N and the low-temperature luggage sorting work table can be handled in the same manner in either case. .

  The stopper plate 25 only needs to be able to prevent the load N on the roller conveyor 10 from falling from the left and right end portions 7, so that the stopper plate 25 is above the upper surface of the roller conveyor 10, preferably in the height direction of the load N as shown in FIG. It should be higher than half of the height. Furthermore, if the stopper plate 25 is enlarged to cover one whole of the left and right side end portions 7 of the work chamber 6, the leakage of cold air in the work chamber 6 from the left and right side end portions 7 on the side where the stopper plate 25 is attached is prevented. It can be prevented and more energy can be saved.

  FIG. 3 is a schematic longitudinal sectional view of a low-temperature baggage sorting work table showing a modification of the present embodiment, and FIG. 4 is a perspective view of the baggage moving means 10B provided here. Since the other components except for the load moving means 10B and the partition 4B are the same as those shown in FIGS. 1 and 2, the same explanation is applied and a new description is omitted.

  The left and right side portions of the partition wall 4B are provided across the left and right side plate portions 2e of the workbench main body 1, the front side portion of the partition wall 4B is placed on the upper end side portion of the front surface portion 2a, and the suction port 12 is opened. Is unchanged. Further, the front wall 40a of the recessed portion 4b is provided to be inclined obliquely rearward from the upper end to the lower end, and the bottom wall 40b is formed at an angle of approximately 90 ° with the front wall 40a.

  That is, the bottom wall 40b is inclined with the front end side being deep and the back side being shallow. The back wall 40c of the recessed portion 4b has an angle of approximately 90 ° with the bottom wall 40b and is formed in parallel with the front wall 40a.

  The duct plate 17 constituting the main cold air circulation duct 5A supports the bent portion of the bottom wall 40b and the back wall 40c of the partition recess 4b and is connected to the upper front corner of the evaporator 15. Therefore, there is no change in that the partition wall 4B partitions the work chamber 6 and the heat exchange chamber 13.

  A plurality of roller conveyors 100a, which are the load moving means 10B, are juxtaposed in the partition recesses 4b. Since the bottom wall 40b of the recessed portion 4b is formed with a low front end and a high back end, the axial direction of the roller conveyor 100a also has a low front end, a high back side end, and is parallel to the bottom wall 40b. Supported by And the fact that it is provided so as to be freely rotatable in the left-right direction, which is the longitudinal direction of the working chamber 6, remains unchanged.

  Further, a plurality of ball conveyors 100b constituting the load moving means 10B together with the roller conveyor 100a are pivotally supported on the front wall 40a of the recessed portion 4b with a predetermined interval. As described above, the recessed portion front wall 40a and the back wall 40b form an angle of approximately 90 °, and the axial direction of the roller conveyor 100a is parallel to the back wall 40b. It has a positional relationship of about 90 ° with respect to the axial direction, and is rotatable in any direction.

  When such a work chamber 6 is provided, the load N sent from the chute is supported by the roller conveyor 100a at the bottom and by the ball conveyor 100b at the front. The load N is low on the front surface and is inclined high on the back surface, and the upper surface is almost directly opposite to the field of view of the worker M. A sending slip P is attached to the upper surface of the luggage N, and the worker M can accurately and easily read the contents (sending destination) described in the sending slip P.

  In order to take out the luggage N corresponding to the destination from the work chamber 6, it is necessary to raise the height of the front wall 40a of the recessed portion 4b. However, since the front wall 40a is provided with a plurality of ball conveyors 100b. These ball conveyors 100b can rotate and lightly pull out the load N, which helps reduce the labor of the worker M.

FIG. 5 is a front view of a low-temperature baggage sorting work table, which shows a further modification of the present embodiment. In addition, about the work-table main body 2 lower part and the base 1, the inside is shown in perspective.
The left and right end portions 7 of the work chamber 6 are almost open, and depending on the weather conditions such as strong wind blowing, outside air enters the work chamber 6 from here or the cool air in the work chamber 6 leaks to the outside and cools down. The effect may be impaired.

  Therefore, the cooling outlets 18A provided in the vicinity of the left and right side end portions 7 of the work chamber 6 are configured by holes provided at a close interval, and are provided in the central portion between the left and right side end portions 7 of the work chamber 6. The cooling outlet 18B is composed of a plurality of holes provided at rough intervals.

  Compared with the central portion of the work chamber 6, the amount of cool air blown from the vicinity of the left and right side end portions 7 is increased, and the influence of uneven cooling due to the opening of the left and right side end portions 7 of the work chamber 6 is suppressed. And uniform cooling.

  In addition, an air curtain outlet 20 (not shown) extends from the front end of the ceiling portion of the work chamber 6 to the left and right side plate portions 2e, and a suction port provided at the upper end of the front portion 2a of the work chamber 6. 12 is extended to the left and right side plate portions 2e.

In this case, when looking into the ceiling from the working chamber 6 side, a U-shaped air curtain outlet 20 is formed along the open surface of the working chamber 6. Similarly, when looking downward from the working chamber 6, a U-shaped suction port 12 is formed. The U-shaped air curtain outlet 20 and the U-shaped suction port 12 face each other through the work chamber 6.
Therefore, an air curtain can also be formed in the vicinity of the left and right side end portions 7 of the work chamber 6, and a further uniform degree of cooling of the work chamber 6 can be obtained.

FIG. 6 is a front view of a low temperature baggage sorting work table in which two units are connected, showing a further modification of the present embodiment.
By providing the connection tool 30 at predetermined positions on the front surface and the back surface of the workbench main body 2 of the low-temperature baggage sorting work table T in advance, it can be connected to another low-temperature baggage sorting work table T as necessary. For example, when there are a large number of sorting destinations and when the processing cannot be completed with one low-temperature baggage sorting work table T, two low-temperature baggage sorting work tables TT are connected.

  Since the baggage moving means 10 is provided across the left and right end portions 7 of the work chamber 6, the baggage can be moved from one low-temperature baggage sorting work table T to the other low-temperature baggage sorting work table T without any trouble.

  When a plurality of machines are installed side by side in this way, naturally, it is necessary to remove the stopper plates 25 on the connection side of the two low-temperature baggage sorting work tables TT. The installation location of the connection tool 30 is not limited to the front and back surfaces of the workbench main body 2 but may be provided on the base 1. In short, the adjacent low-temperature luggage sorting work tables TT can be connected with as little gap as possible. Any position and structure may be used.

  As described above, in the case of a low-temperature package sorting work table of the type in which the suction port 12 is extended in a U-shape from the upper end side of the front surface portion 2a to the left and right side plate portions 2e, the load N between the work tables The arrangement structure of the luggage moving means 10 and 10B may be designed in consideration, such as providing roller conveyors or ball conveyors on the left and right side plate portions 2e as appropriate.

  In the above embodiment, the work table body 2 has been described as a separate body from the base 1. However, both the left and right sides of the work table main body 2 are used as the top plate of the base 1. The plate portion 2e may be shared by the same single plate.

  As mentioned above, although this embodiment was described, the above-mentioned embodiment is shown as an example and does not intend limiting the range of embodiment. The novel embodiment can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  2a ... front part, 2b ... bottom part, 2c ... back part, 2d ... top plate part, 2e ... left and right side plate parts, 3 ... front opening part, 6 ... work room, 2 ... worktable body, 10, 10B ... luggage Moving means, 4 ... partition wall, 15 ... evaporator, 14 ... blower, 5 ... cool air circulation duct, 18 ... cooling outlet, 12 ... air inlet, 20 ... air curtain outlet, 10, 100a ... roller conveyor (luggage) Moving means), 100b ... ball conveyor (baggage moving means), 8 ... lighting fixture (illuminating means), 1 ... base, 24 ... rotary car, 30 ... connector

Claims (12)

A worktable body provided with a work room in which luggage can be taken in and out from the opened front and side surfaces, and surrounded by a bottom surface portion, a back surface portion, a top plate portion, and left and right side plate portions,
A load moving means provided on a bottom surface portion of the work chamber in the work table main body, and capable of moving the load along the longitudinal direction of the work chamber;
An evaporator and a blower which are arranged in a lower part of the load moving means and constitute a refrigeration cycle;
Cold air that is blown from the blower and that is generated by heat exchange in the evaporator, as a cold air that circulates from the lower back to the upper part of the work chamber back, and
A cooling outlet that is opened in the cold air circulation duct and blows out the cold air led to the cold air circulation duct to the working chamber;
A suction port provided at the upper end side of the front portion of the working chamber, for sucking the cold air blown from the cooling outlet and guiding it to the blower;
A low temperature luggage sorting work table characterized by comprising: The cold air circulation duct extends from the upper back of the work chamber to the front end of the top plate,
2. An air curtain blowout port is provided for blowing and guiding the cool air guided to the extended end of the cold air circulation duct toward the suction port below through the front opening. The listed low temperature luggage sorting workbench.   2. The load carrying means is a plurality of roller conveyors arranged side by side along the longitudinal direction of the working chamber at intervals, each being rotatably provided in the longitudinal direction. Low temperature luggage sorting work table.   2. The load moving means is arranged in parallel along the longitudinal direction of the work chamber, with a front end portion being low and a back side end portion being inclined high. The listed low temperature luggage sorting workbench.   The load moving means are arranged side by side along the longitudinal direction of the work chamber, and in the respective axial directions, the front side end portion is low and the back side end portion is inclined with a high inclination. A plurality of roller conveyors provided rotatably in the longitudinal direction, and a plurality of ball conveyors disposed at a 90 ° position relative to the axial direction of the roller conveyor at the front end of the roller conveyor and rotatable. The low-temperature luggage sorting workbench according to claim 1, wherein   6. The low-temperature luggage sorting worktable according to claim 1, further comprising an illumination unit that illuminates the work chamber at a ceiling portion of the work chamber. A base is provided at the bottom of the work table body,
The low-temperature load sorting work table according to any one of claims 1 to 6, wherein a front surface of the base is provided on a deeper side than a front surface of the work table main body.   8. The low-temperature baggage sorting work table according to claim 7, wherein a rotatable vehicle that can move the work table body is provided at the bottom of the base.   9. The low temperature load sorting work table according to claim 7, wherein a condenser and a compressor connected to the evaporator and constituting a refrigeration cycle are housed in the base.   The cooling outlet is characterized in that the left and right side portions of the working chamber are composed of a plurality of holes provided densely, and the central portion between the left and right sides is a plurality of holes provided roughly. The low-temperature baggage sorting work table according to any one of claims 1 to 9.   The low-temperature baggage sorting work table according to any one of claims 1 to 10, further comprising a connecting tool capable of connecting another low-temperature baggage sorting work table to the low-temperature baggage sorting work table.   The low-temperature baggage sorting according to any one of claims 1 to 11, further comprising a stopper plate that can be detachably attached to at least one of the left and right sides of the work chamber to prevent the baggage from falling. Workbench.

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