JP2005239044A - Cold insulation vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress lowering of temperature of an article placed at a position near a storage warehouse floor surface when an empty box becoming low temperature is recovered. <P>SOLUTION: In the cold insulation vehicle provided with refrigerator units 2, 4 building-in a heater for adjusting the temperature of the storage 12, 13, heaters 61, 62 for heating the neighborhood to a floor plate 52 are provided below the floor plate 52 placed with the article. Since the heaters 61, 62 are provided below the floor plate 52, the neighborhood to the floor plate 52 can be quickly returned to an appropriate temperature when the temperature of the storage floor surface is lowered. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cold-storage / warm-up vehicle that transports goods while keeping them cold or warm.

  2. Description of the Related Art Conventionally, refrigeration vehicles used for transporting frozen foods are known (see, for example, Patent Document 1).

On the other hand, in recent years, the number of refrigerated warm storage carts for delivering cooked rice to convenience stores has increased, and the temperature inside the cabinet is adjusted to + 20 ° C. as the optimum temperature. The inside temperature is controlled by a refrigerator unit and a heater in response to temperature load fluctuations at high and low outside temperatures.
Japanese Patent Laid-Open No. 7-232588

  However, the heat load of a cold storage car for convenience store delivery is not only the outside air that enters when the door is opened, but also the collection empty box left outside the store, which is hot in the summer and cold in the winter, Heat load.

  In particular, a recovery empty box in winter has a problem of lowering the temperature of cooked rice (article) placed near the storage floor due to heat conduction from the floor board.

  Moreover, since the heater is generally installed at the upper position in the storage together with the refrigerator unit, it is difficult to quickly return the temperature of the part to an appropriate temperature when the temperature near the storage floor is lowered. It is.

  In view of the above points, an object of the present invention is to suppress a temperature drop of an article placed at a position close to a storage floor when an empty box having a low temperature is collected.

  In order to achieve the above object, according to the first aspect of the present invention, a storage (12, 13) for storing and storing articles and a temperature adjusting device (2, 4) for adjusting the temperature of the storage (12, 13). In the cold storage warm storage car provided with the heating means (61, 62) for heating the vicinity of the floor board (52, 93) is provided below the floor board (52, 93) on which the article is placed. To do.

  According to this, since the heating means is provided below the floorboard, when the temperature of the storage floor surface is lowered, the vicinity of the floorboard can be quickly returned to an appropriate temperature, and therefore the position close to the storage floor surface. The temperature drop of articles such as cooked rice placed in can be suppressed.

  In the second aspect of the present invention, an air passage (94) for circulating the air in the storage (12, 13) is formed below the floor plates (52, 93), and the floor plates (52, 93) The communication part (95) which connects the air passage (94) and the internal space of the storage (12, 13) is formed, and the heating means (61, 62) is arranged in the air passage (94). It is characterized by.

  According to this, articles | goods, such as cooked rice placed in the position close | similar to a storage floor, can be rapidly heated with the air heated by the heating means.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.

(First embodiment)
A first embodiment of the present invention will be described. FIG. 1 is a perspective view of a cold-reserved warm storage vehicle according to the first embodiment, FIG. 2 is a diagram showing a heater hot water circuit in the cold-reserved warm storage vehicle of FIG. 1, and FIG. It is sectional drawing of the vicinity.

  As shown in FIG. 1, the cold insulated warm car 1 is provided with two storage boxes 12 and 13 for storing and storing articles in the rear part of the cab 11 of the cab. The storages 12 and 13 are separated by a partition wall 14.

  On the side surface side of the first storage 12 on the front side of the vehicle, an opening / closing door 15 that opens and closes an opening for loading and unloading the luggage into the first storage 12 is provided. At the rearmost part of the second storage 13 on the rear side of the vehicle, two opening / closing doors 16 and 17 are provided for opening and closing the opening for loading and unloading the luggage into the second storage 13.

  A first refrigerator unit 2 that adjusts the temperature of the first storage 12 is disposed on the ceiling of the first storage 12 on the front side of the vehicle (the frontmost part in this example). The first refrigerator unit 2 includes an electric blower fan and an evaporator that cools the blown air of the blower fan. Incidentally, the evaporator constitutes a well-known refrigeration cycle apparatus together with a refrigerant compressor and the like, and cools the blown air by heat exchange between the blown air and the refrigerant. The first refrigerator unit 2 includes a built-in hot water type first unit heater 21 (see FIG. 2) that uses cooling water that cools the engine 3 (see FIG. 2) of the vehicle as a heat source. Further, the first refrigerator unit 2 includes a first internal temperature sensor 22 that detects the temperature of the air sucked into the first refrigerator unit 2 (that is, the temperature of the first storage 12).

  A second refrigerator unit 4 that adjusts the temperature of the second storage 13 is arranged on the ceiling of the second storage 13 on the vehicle rear side (the rearmost part in this example). The second refrigerator unit 4 has the same configuration as the first refrigerator unit 2, and includes a second unit heater 41 (see FIG. 2) and a second internal temperature sensor 42.

  In addition, the 1st refrigerator unit 2 and the 2nd refrigerator unit 4 are equivalent to the temperature control apparatus of this invention.

  As shown in FIG. 3, a heat insulating plate 51 made of a material having a high heat insulating property such as a veneer plate or a foamed plate material is laid on the floors of the storage boxes 12 and 13. An upper floor board 52 and a lower floor board 53 made of material are laid. The article is placed on the upper floor plate 52. Therefore, the upper floor board 52 corresponds to the floor board of the present invention.

  A gap is formed between the two floor plates 52 and 53, and floor heaters 61 and 62 are disposed in the gap. More specifically, the first floor heater 61 is disposed on the floor of the first storage 12, and the second floor heater 62 is disposed on the floor of the second storage 13. These floor heaters 61 and 62 are in contact with the two floor boards 52 and 53, and heat the vicinity of the upper floor board 52 to adjust the floor surface temperature of the storage cabinets 12 and 13, according to the present invention. It corresponds to the heating means.

  Next, a heater hot water circuit in the cold insulated warm storage vehicle 1 will be described with reference to FIG.

  First, the cooling water of the engine 3 is circulated to the radiator 32 by the engine water pump 31 and is appropriately adjusted to the temperature. When the cooling water temperature is low, the thermostat 33 prevents the circulation to the radiator 32.

  Cooling water (warm water) of the engine 3 is circulated to the unit heaters 21 and 41, the floor heaters 61 and 62, and the cab heater 7 used for air conditioning in the cab 11 by an electric heater water pump 81. It has come to be.

  The hot water circuit connecting the first unit heater 21 and the first floor heater 61 and the heater water pump 81 is provided with an electric first open / close valve 82 for opening and closing the circuit, and the second unit heater 41. The hot water circuit connecting the second floor heater 62 and the heater water pump 81 is provided with an electric second on-off valve 83 for opening and closing the circuit.

  Next, the operation will be described. Since the temperature adjustment operation of the first storage 12 and the temperature adjustment operation of the second storage 13 are the same, only the temperature adjustment operation of the first storage 12 will be described here.

  In summertime when the outside air temperature is high, first, the refrigerant compressor is driven by the engine 3 to operate the refrigeration cycle, the air in the first storage 12 is cooled by the first refrigerator unit 2, and the first storage is performed. The internal temperature of the storage 12 is lowered. And if the internal temperature of the 1st storage 12 falls below preset temperature (for example, +20 degreeC), the cooling by the 1st refrigerator unit 2 will be stopped. When the internal temperature of the first storage 12 exceeds a set temperature (for example, + 20 ° C.), cooling by the first refrigerator unit 2 is started again.

  On the other hand, in winter or the like when the outside air temperature is low, the heater water pump 81 is operated and the first on-off valve 82 is opened to cause the first unit heater 21 and the first floor heater 61 to cool the engine 3 with cooling water. Circulate. Thereby, the 1st unit part heater 21 and the 1st floor part heater 61 heat the air in the 1st storage 12, and raise the internal temperature of the 1st storage 12. And if the internal temperature of the 1st storage 12 exceeds preset temperature, the heating by the 1st unit heater 21 and the 1st floor heater 61 will be stopped. When the internal temperature of the first storage 12 becomes equal to or lower than the set temperature, heating by the first unit heater 21 and the first floor heater 61 is started again.

  By the way, when recovering an empty box that is left outdoors and has a low temperature when the outside air temperature is low, the internal temperature decreases, and in particular, the temperature of the upper floor plate 52 on which the empty box is placed tends to decrease. However, in this embodiment, the upper floor plate 52 and the vicinity thereof can be heated by the first floor heater 61 to quickly return the floor surface temperature of the storage 12 to an appropriate temperature. Temperature drop of articles such as cooked rice placed near the position can be suppressed.

(Second Embodiment)
A second embodiment of the present invention will be described. FIG. 4 is a view showing a heater hot water circuit in the cold-storage warm storage vehicle according to the second embodiment. The same or equivalent parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In the present embodiment, a floor temperature sensor for detecting the temperature of the air at that portion (that is, the temperature in the vicinity of the upper floor board 52) is provided on the upper surface of the upper floor board 52, and only the temperature in the vicinity of the upper floor board 52 in the entire chamber is provided. In this case, only the floor heaters 61 and 62 out of the unit heaters 21 and 41 and the floor heaters 61 and 62 can be operated.

  That is, as shown in FIG. 4, the hot water circuit connecting the first unit heater 21 and the heater water pump 81 is provided with an electric first main on-off valve 82a for opening and closing the circuit. The hot water circuit connecting the heater 61 and the heater water pump 81 is provided with an electric first sub-open / close valve 82b that opens and closes the circuit, and accordingly, the first open / close valve 82 (see FIG. 2). Has been abolished.

  Similarly, the warm water circuit connecting the second unit heater 41 and the heater water pump 81 is provided with an electric second main on-off valve 83a for opening and closing the circuit, and the second floor heater 62 and the heater The hot water circuit connecting the water pump 81 is provided with an electric second sub-open / close valve 83b that opens and closes the circuit, and the second open / close valve 83 (see FIG. 2) is eliminated accordingly.

  According to this, when the outside air temperature is low, the empty box that is left outside and becomes a low temperature is collected, and the empty box is placed on the upper floor plate 52, for example, only the temperature near the upper floor plate 52 in the first storage 12. When the temperature drops, the heater water pump 81 is operated and the first sub-open / close valve 82b is opened to circulate the cooling water of the engine 3 to the first floor heater 61. Thereby, the upper floor board 52 and its vicinity can be heated with the 1st floor part heater 61, and the floor surface temperature of the storage 12 can be rapidly returned to appropriate temperature, Therefore, it is in the position close | similar to the floor of the storage 12 It is possible to suppress the temperature drop of articles such as cooked rice.

  When only the temperature in the vicinity of the upper floor plate 52 is lowered in the second storage 13, the heater water pump 81 is operated and the second auxiliary opening / closing valve 83b is opened, so that the second floor heater The cooling water of the engine 3 is circulated through 62.

(Third embodiment)
A third embodiment of the present invention will be described. FIG. 5 is a perspective view of the vicinity of the floor plate of the storage in the cold-storage warm storage vehicle according to the third embodiment. The same or equivalent parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 5, instead of the two floor boards 52 and 53 (see FIG. 3) in the first embodiment, an integrated floor board member 9 is used.

  The floor plate member 9 is made of aluminum, and has a flat plate-like base portion 91 that contacts the heat insulating plate 51, a large number of plate-like leg portions 92 that extend upward from the base portion 91, and the upper ends of the leg portions 92. And a large number of plate-like floor plate portions 93 extending in the horizontal direction. An article can be placed on the floor plate portion 93. Therefore, the floor board portion 93 corresponds to the floor board of the present invention.

  An air passage 94 for circulating the air in the storages 12 and 13 is formed in the floor plate member 9 and below the floor plate portion 93, and floor heaters 61 and 62 are arranged in the air passage 94. . Further, the air passage 94 and the internal spaces of the storage boxes 12 and 13 are communicated with each other by a gap 95 between the adjacent floor plate portions 93. The gap 95 corresponds to the communication portion of the present invention.

  According to this, the air heated by the floor heaters 61 and 62 in the air passage 94 can move to the internal spaces of the storage boxes 12 and 13 through the gap 95 as indicated by arrows. Therefore, the article placed near the storage floor can be heated more quickly than the case where the article close to the storage floor is heated via the upper floor plate 52 as in the first embodiment. .

(Other embodiments)
In each of the above embodiments, a hot water heater is shown as the heating means for heating the vicinity of the floor plate. However, a heater using the heat of the catalyst for purifying the exhaust gas, or an electric heater may be used as the heating means. .

1 is a perspective view of a cold storage car according to a first embodiment of the present invention. It is a figure which shows the heater warm water circuit in the cold storage warm storage vehicle of FIG. It is sectional drawing of the floor board vicinity of the storage in the cold storage warm storage vehicle of FIG. It is a figure which shows the heater warm water circuit of the cold storage warm storage vehicle which concerns on 2nd Embodiment of this invention. It is a perspective view of the floor board vicinity of the storage in the cold storage warm storage vehicle which concerns on 3rd Embodiment of this invention.

Explanation of symbols

  2, 4 ... Refrigerator unit (temperature adjusting device), 12, 13 ... Storage, 52 ... Upper floor plate (floor plate), 61, 62 ... Floor heater (heating means), 93 ... Floor plate portion (floor plate).

Claims (2)

In a cold storage warm storage car comprising a storage (12, 13) for storing and storing articles and a temperature adjusting device (2, 4) for adjusting the temperature of the storage (12, 13),
A cold storage warm storage car characterized in that heating means (61, 62) for heating the vicinity of the floor board (52, 93) is provided below the floor board (52, 93) on which the article is placed. Below the floor plate (93) is formed an air passage (94) for circulating the air in the storage (12, 13),
The floor plate (93) is formed with a communication portion (95) that communicates the air passage (94) and the internal space of the storage (12, 13).
The cold insulated warm storage car according to claim 1, wherein the heating means (61, 62) is disposed in the air passage (94).

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