JP2009036498A - Insulated van - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce cost, by securing an insulated space of an insulated van, by equipping an insulated storage of the insulated van with a cooling panel capable of reducing manufacturing cost, by simplifying and thinning a constitution of a heat exchange panel. <P>SOLUTION: This insulated van has the insulated storage of a thermal insulation sealed structure having the insulated space for storing an insulated object and having a wall surface constituted of a thermal insulation panel, and is composed of a plurality of plates 3 and 4 forming a continuous flow passage space (f) of a cooling medium by partially superposing through-holes by dispersively arranging and mutually laminating a plurality of through-holes 3a and 4a on a partition wall opposed to the insulates space (c) of the insulated storage 12, and end plates 2 and 5 joined to an upper surface and an under surface of the plurality of plates so as to cover the flow passage space, and is constituted so as to cold-insulate the insulated space (c) by making the low temperature brine flow to the flow passage space (f) of the heat exchange panel by arranging the heat exchange panel 1 of arranging a plurality of flow passage spaces (f) in parallel. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cold storage vehicle having a cold storage unit in which a plate-type heat exchange panel having a simple structure, high strength, and low cost is attached to a wall surface, and the manufacturing time and the manufacturing cost can be greatly reduced as compared with the prior art. .

Conventionally, a heat exchanger is manufactured by a combination of a copper tube and an aluminum plate. Therefore, it cannot be made into a thin shape, and there are restrictions on the installation location. In addition, since this type of heat exchanger requires a device that generates forced convection, it is necessary to install an accessory device in addition to the main body of the heat exchanger.
Furthermore, the holding amount of the heat source medium and the like is large, and the heat source medium cannot be used for applications that have been required to be light and compact.

  For this reason, plate-type heat exchangers that can be made more compact have also been used. A plate heat exchanger is formed by stacking a plurality of plates so as to form a flow path space of a heat source medium between the surfaces, and joining them by a joining method such as brazing. Since it is used and has a thin shape, it has the advantage that it can be installed in a narrow space without taking up space.

  For example, Patent Document 1 (Japanese Patent Laid-Open No. 2000-258085) and Patent Document 2 (Japanese Patent Laid-Open No. 2001-116483) disclose such a plate heat exchanger. However, the plate-type heat exchangers disclosed in Patent Documents 1 and 2 have to form irregularities with complex shapes on a plurality of plates in order to form the flow path of the heat source medium, He spent time and man-made expenses.

  Patent Document 3 (Japanese Patent Application Laid-Open No. 9-113156) discloses that a plurality of plates are provided with channel through holes without forming three-dimensional irregularities, and the plates that are in contact with each other are appropriately overlapped. Discloses a plate heat exchanger configured to form a flow path for a cooling medium.

  Patent Document 4 (Japanese Patent Application Laid-Open No. 2004-108700) discloses a cold car in which a refrigerator is mounted and the cold insulation space in the cold storage is kept cold by the refrigerator. In this cold storage vehicle, a cooling panel that introduces cold air from the refrigerator is provided on the ceiling surface and floor surface of the cold storage chamber so that the inside of the cold storage chamber is maintained at a low temperature.

Japanese Patent Laid-Open No. 2000-258085 JP 2001-116483 A JP-A-9-113156 JP 2004-108700 A

  However, even in the plate heat exchanger disclosed in Patent Document 3, the arrangement of the plurality of flow passage through holes is set in a complicated manner, the arrangement of the flow passage through holes is designed, and these flow passage through holes are arranged. It took a lot of man-hours and time to drill.

  In the cool box disclosed in Patent Document 4, a cavity for circulating cold air is provided in the cooling panel. For this reason, the cooling panel is increased in thickness and requires a lot of man-hours to process the cooling panel. When the thickness of the cooling panel is increased, the cold storage space of the cold storage is reduced correspondingly, and the capacity for storing the object to be cooled decreases.

  Thus, it is effective to install a plate heat exchanger that does not take up space on the wall surface in order to secure a limited cold storage space in the cold storage vehicle having the cold storage. Therefore, it is necessary to manufacture a cooling panel that is easy to process and low in cost and does not take up space.

  The present invention has been made in view of the above-described problems of the prior art, and by providing a cooling panel that can reduce the manufacturing cost by simplifying the structure of the cooling panel and installing the cooling panel in the cold storage room of the cold storage vehicle, The objective is to realize a cold-reserved vehicle that secures low-cost.

In order to achieve the above-mentioned object,
In a cold car equipped with a cold insulation space having a cold insulation space for storing the object to be cooled and having a heat insulation sealed structure in which the wall surface is constituted by a heat insulation panel,
A plurality of through holes are distributed and stacked on the partition wall facing the cold storage space of the cold storage, and a plurality of the through holes are partially overlapped to form a continuous flow passage space for the cooling medium. A plate and an end plate joined to cover the flow path space on the upper and lower surfaces of the plurality of plates, and a heat exchange panel in which the plurality of flow path spaces are arranged in parallel,
The cold insulation space is cooled by flowing low temperature brine through the flow path space of the heat exchange panel.

The heat exchange panel to be attached to the cold car according to the present invention is composed of a plurality of plates and end plates each having a through-hole, and does not need to form a three-dimensional shape on each plate. The plate can be easily processed, and the number of manufacturing steps and manufacturing costs can be greatly reduced.
Note that the size, arrangement position, shape, and the like of the through holes provided in each plate vary depending on the heat exchange amount of the heat exchanger, the flow rate of the heat source medium, and the like.

  Further, by arranging the plurality of flow path spaces in parallel, the flow resistance of the low-temperature brine flowing through the flow path space can be reduced. Various metals or resins can be used as the material of each plate, and the bonding method between the plates is performed by, for example, pressure bonding or heat welding. In addition, the flow path space may be designed in advance such as a cross-sectional area, a flow path shape, and the like so that the heat source medium is evenly distributed to each flow path.

In the present invention, the through holes formed in the plurality of plates have the same shape and are formed at the same interval, and are arranged so as to partially overlap the through holes of the plates adjacent to each other. A continuous flow path space may be formed. A punching metal plate may be used as the plurality of plates.
Thus, since only one type of die cutting blade for punching the through hole in the plate has to be manufactured, the processing time and processing cost can be greatly reduced. This also enables mass production of plates.

  Further, in the present invention, a refrigeration apparatus mounted on a vehicle body, a brine circulation path for circulating the low-temperature brine through the heat exchange panel, a refrigerant of the refrigeration apparatus interposed in the brine circulation path and the low-temperature brine And a heat exchanger for heat exchange.

With such a configuration, it is possible to return to a low temperature by using the heat exchanger to exchange heat with the refrigerant in the cold storage, so that it is possible to return to a low temperature. There will be no continuous use of brine.
Moreover, in this invention, the temperature sensor which detects the temperature of the brine which flows through a heat exchange panel may be installed, and the temperature control of the brine may be performed based on the detector of this temperature sensor.

  According to the cold storage vehicle of the present invention, a plurality of through-holes are distributed and stacked on the partition wall facing the cold-reserving space of the cold-reservoir, and the coolant is continuously flowed by partially overlapping the through-holes. A plurality of plates formed with spaces, and end plates joined to the upper and lower surfaces of the plurality of plates so as to cover the flow path space; There is no need to form complicated irregularities, and it is only necessary to open the through hole, so the processing time and cost of the plate can be greatly reduced, and this makes plate-type heat exchange simple and inexpensive. Can be manufactured.

  In addition, since it is composed of a flat plate and an end plate having through holes, local stress concentration does not occur and high strength can be obtained.

  In addition, by disposing a heat exchange panel in which a plurality of flow path spaces are arranged in parallel and flowing low temperature brine through the flow path space of the heat exchange panel, the flow resistance of the brine flowing through the flow path space is reduced. be able to.

  Furthermore, by providing the heat exchange panel on the partition wall facing the cold storage space of the cold storage room, it is possible to realize a cold insulation device that does not require forced convection, and because it has a thin shape, it does not take up space and is narrow It has the advantage that it can be installed without taking up space.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this embodiment are not intended to limit the scope of the present invention to that unless otherwise specified.
FIG. 1 is an assembly explanatory view of a heat exchange panel according to an embodiment of the present invention, and FIG. 2 is a partially enlarged view of a plate forming a brine flow path in the heat exchange panel.

  1 and 2, the heat exchange panel 1 of the present embodiment is configured by arranging end plates 2 and 5 on both sides of plates 3 and 4. The plate 3 is made of a punching metal plate having long holes 2a having the same width and semicircular ends at regular intervals in the vertical and horizontal directions. In the plate 4, long elongated holes 4 a having the same size and shape as the elongated holes 3 a of the plate 3 are regularly drilled in the vertical and lateral directions with the same interval as the elongated holes 3 a. It consists of a horizontal punching metal plate.

  However, the long holes 4 a of the plate 4 are formed at positions shifted by a half pitch with respect to the long holes 3 a of the plate 3. That is, when the plate 3 and the plate 4 are overlapped at a position where they exactly overlap, the long hole 4a is arranged at a position straddling the long hole 3a.

The end plates 2 and 5 are end plates having a sealing function without holes superimposed on both sides of the plates 3 and 4. The plates 3 and 4 and the end plates 2 and 5 are made of resin or aluminum.
As shown in FIG. 1, the plates 3 and 4 and the end plates 2 and 5 are laminated and joined together to form a heat exchange panel. At this time, as shown in FIG. 2, the plates 2 and 3 have a positional relationship in which the long holes 3a and 4a are shifted from each other so that they overlap only at the circular portions at both ends of the long holes. A continuous flow path space is formed.

  Further, as shown in FIG. 1, due to the arrangement relationship of the long holes 3a and 4a, the flow path space formed by the combination of the long holes 3a and 4a is formed linearly in parallel in one direction ( In other words, it is formed in the direction of arrow a when a cold car to be described later is attached). The brine channel space is covered with the end plates 2 and 5 joined to both sides of the plates 3 and 4, thereby forming a brine channel f. The brine flow path f is sealed to the outside except for the inlet / outlet of the brine b (not shown), and independent flow paths except for the header parts (not shown) provided at the inlet and outlet portions of the heat exchange panel 1. Forming.

FIG. 3 is a partial cross-sectional view of the heat exchange panel 1, showing the end joints of the end plates 2 and 5, bonded at the joint 6 of the end plates 2 and 5 with a plastic adhesive or CO Bonding is performed using _two lasers.

  FIG. 4 is a schematic side view showing a case where the heat exchange panel 1 having such a configuration is mounted in a cool box of a cool car, and FIG. 5 is a cross-sectional view taken along line AA in FIG. 4 and 5, the cool box 12 is installed above the cargo bed portion of the cool box 10, that is, above the chassis 11. A cold insulation space c is formed inside the cold insulation box 12. A heat insulating panel 13 is mounted on the six surfaces of the cool box 12 surrounding the cool space c, that is, all the wall surfaces. The heat insulation panel 13 is comprised with the heat insulating material which consists of foamed resins, such as styrene and urethane.

  The heat exchange panel 1 is attached to the inside of the heat insulating panel 13 on the ceiling surface and the left and right side surfaces of the cool box 12. A refrigeration apparatus 14 is attached to the front wall 12 a of the cool box 12. A heat exchanger 16 is installed inside the cool box 12 near the refrigeration apparatus 14, and a refrigerant circulation path 15 is connected between the refrigeration apparatus 14 and the heat exchanger 16. On the other hand, an inlet pipe 1a and an outlet pipe 1b communicating with a brine flow path f formed in the heat exchange panel 1 are connected to the heat exchange panel 1, and the inlet pipe 1a and the outlet pipe 1b are connected to a brine circulation path 17. Connected with.

  The brine circulation path 17 is provided with a pump 18 and an on-off valve 19 for circulating the brine in the direction of the arrow. The brine circulation path 17 is connected to the heat exchanger 16, and the brine flowing through the brine circulation path 17 is cooled by exchanging heat with the refrigerant circulated from the refrigeration apparatus 14. An openable / closable rear door 21 with the heat insulating panel 12 attached inside is provided at the rear of the cool box 12, and the object to be cooled w is loaded or unloaded from the rear door 21.

In the present embodiment having such a configuration, a refrigerant cooled by the refrigeration apparatus 14, for example, CO ₂ or the like is supplied to the heat exchanger 16 through the refrigerant circulation path 15. On the other hand, brine such as calcium chloride solution, saline, or magnesium chloride solution circulates in the brine circulation path 17, and these brines are cooled by exchanging heat with the refrigerant in the heat exchanger 16.

  Inside the heat exchange panel 1, brine flow paths f having independent flow paths are formed. At the inlet of the heat exchange panel 1, headers (not shown) for connecting the brine flow paths f are provided. . And when the brine b flows in into the heat exchange panel 1 from the inlet pipe 1a, the inflow brine b is distributed to each brine flow path f from this header. And the brine b which flowed into the brine flow path f from the inlet pipe 1a flows toward the arrow a direction (vehicle body rear direction). At this time, the cold insulation space c is cooled by the brine b.

  A header (not shown) that connects each brine channel f is also provided at the rear end portion of the heat exchange panel 1, and the brine that has reached the rear end portion of the heat exchange panel 1 by cooling the cold insulation space c and heating it in reverse. After b has joined at the header, it flows out from the outlet pipe 1 b to the brine circulation path 17. The brine b flowing out from the brine circulation path 17 is cooled again by the heat exchanger 16 and returned to the heat exchange panel 1.

According to the present embodiment, the plates 3 and 4 of the heat exchange panel 1 are composed of punched metal plates formed by regularly drilling the same size and shape of the long holes 3a and 4a at the same constant interval, In addition, since the brine flow path f is formed by joining the plate 3 and the plate 4 in a state where the long holes 3a and 4a are at least partially overlapped, complex irregularities are formed on the plate as in the past. There is no need to do.
Therefore, it is only necessary to use the same die cutting blade, and the plate can be mass-produced using the same die cutting blade. Therefore, the manufacturing time and manufacturing cost of the plate can be greatly reduced.

  Moreover, since the plate | board thickness can be made thin in the heat exchange panel 1 of the said structure, the cold storage space c can be expanded by that amount and the utilization efficiency of the cold storage space c can be improved.

Further, for example, when CO ₂ is used as the refrigerant of the refrigeration apparatus 14, CO ₂ has a high pressure. Therefore, when CO ₂ is directly flowed into the brine flow path f of the heat exchange panel 1, the flow resistance increases, and the refrigeration apparatus 14 Decreases the efficiency. In this embodiment, by flowing brine through the heat exchange panel 1 instead of the refrigerant, the flow resistance can be reduced and the cooling efficiency can be improved. Furthermore, in the present embodiment, the brine flow path f is provided in one direction, that is, in a straight line and in parallel in the direction of the arrow a in FIG.

  Furthermore, in this embodiment, since the refrigeration apparatus 14 is mounted on the vehicle body and the brine b is cooled by the refrigerant cooled by the refrigeration apparatus 14d, it is necessary to replace the heated brine b for cooling the cold insulation space c one by one. The brine b can be continuously subjected to cooling.

Furthermore, the installation of the heat exchange panel 1 eliminates the need for a device that causes forced convection inside the cool box 12, and can greatly simplify and reduce the weight of the device.
In this embodiment, the refrigeration apparatus 14 is installed on the upper part of the front wall 12a of the cool box 12, but the refrigeration apparatus 14 may be attached to the chassis 11 instead.

  According to the present invention, it is possible to significantly reduce the manufacturing time and manufacturing cost of the heat exchange panel as compared with the prior art, and thereby, it is possible to realize a cold car having a simple structure and good cold keeping efficiency.

It is assembly explanatory drawing of the heat exchange panel which concerns on one Embodiment of this invention. It is a partial enlarged view of the flow path forming plate according to the embodiment. It is a partial cross section figure of the heat exchange panel of the said embodiment heat. It is a typical side view of the cool box of the embodiment. It is sectional drawing which follows the AA line in FIG.

Explanation of symbols

1 Heat exchange panel 2, 5 End plate 3, 4 Plate 3a, 4a Long hole (through hole)
DESCRIPTION OF SYMBOLS 10 Cold storage vehicle 11 Cold storage 13 Heat insulation panel 14 Refrigeration apparatus 16 Heat exchanger 17 Brine circulation path b Low temperature brine c Cold storage space f Brine flow path

Claims (4)

In a cold car equipped with a cold insulation space having a cold insulation space for storing the object to be cooled and having a heat insulation sealed structure in which the wall surface is constituted by a heat insulation panel,
A plurality of through holes are distributed and stacked on the partition wall facing the cold storage space of the cold storage, and a plurality of the through holes are partially overlapped to form a continuous flow passage space for the cooling medium. A plate and an end plate joined to cover the flow path space on the upper and lower surfaces of the plurality of plates, and a heat exchange panel in which the plurality of flow path spaces are arranged in parallel,
A cold-reserving vehicle, wherein the cold-reserving space is cooled by flowing low-temperature brine through the flow path space of the heat exchange panel.   The through holes formed in the plurality of plates have the same shape and are formed at the same interval, and are arranged so as to partially overlap the through holes of the plates adjacent to each other. The cold insulated vehicle according to claim 1, wherein a road space is formed.   The cold storage vehicle according to claim 1 or 2, wherein the plurality of plates are punched metal plates.   A refrigeration apparatus mounted on a vehicle body, a brine circulation path for circulating the low-temperature brine through the heat exchange panel, and a heat exchanger interposed in the brine circulation path for exchanging heat between the refrigerant of the refrigeration apparatus and the low-temperature brine. The cold insulated vehicle according to claim 1, further comprising:

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