JP2016075408A - Portable type cooling box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable type cooling box increasing a cold insulation operation time in a secondary battery, and capable of preventing life deterioration of the secondary battery.SOLUTION: A portable type cooling box includes a cold insulation space and a housing having a cold storage material. In the housing, provided are a condenser, an air blower blowing air to the condenser, and a machine room housing a secondary battery. The secondary battery is a nonaqueous electrolyte secondary battery, and arranged so that air blown from the air blower to the condenser is not blown to the secondary battery.SELECTED DRAWING: Figure 1

Description

  Embodiments of the present invention relate to a portable cool box.

  Conventionally, a general portable cold storage used by a carrier or the like has a cold storage space surrounded by a wall surface filled with a foaming agent, and has a machine room disposed below or above the cold storage space. doing. The machine room is provided with a refrigeration cycle apparatus for cooling the cold storage material provided in the cold insulation space. Moreover, in order to perform the cold insulation operation in the cold insulation space by the cold heat stored in the cold storage material, a blower for blowing air into the warehouse through the cold storage material is provided, and a secondary battery for supplying electric power to the blower is provided. Is provided. A conventional portable cool box is provided with a lead-acid battery, and is used as a power source for a cool air circulation blower in the cool box.

However, lead-acid batteries are short-lived and require frequent maintenance of portable cold storage. Moreover, since the storage capacity is not so large, the operating rate of the portable cool box is limited.
Thus, there is a demand for a portable cool box using a storage battery having a longer life and a large storage capacity.

JP-A-9-269174

The problem to be solved by the present invention is to provide a portable cool box using a non-aqueous electrolyte secondary battery such as a lithium ion storage battery having a longer life and a large storage capacity in order to solve the above problems. .
Further, the nonaqueous electrolyte secondary battery generates heat during charging / discharging, and has a characteristic that when the temperature becomes higher than a predetermined temperature, the amount of stored electricity is drastically reduced and the life is remarkably reduced. In particular, if it is placed in the same space as heat-generating parts such as a refrigeration cycle device, it will have a long life by being heated by exhaust heat or compressor heat when the refrigeration cycle device is operated to cool the regenerator material. The fall is suppressed and a more reliable portable cooler is provided.

  It is a portable cold storage provided with a cold storage space and a case having a cold storage material inside, and the case is provided with a condenser, a blower for blowing air to the condenser, and a machine room for storing a secondary battery. ing. The secondary battery is a non-aqueous electrolyte secondary battery, and is arranged so that the air blown from the blower to the condenser and subjected to heat exchange does not hit the secondary battery.

The perspective view of the portable cold storage in 1st Embodiment. The longitudinal cross-sectional view of the portable cold storage in 1st Embodiment. The top view of the portable cold storage in 1st Embodiment. Schematic which shows the machine room of the portable cold storage in 1st Embodiment. The top view of the portable cold storage in 2nd Embodiment. Schematic which shows the machine room of the portable cold storage in 2nd Embodiment.

Hereinafter, a portable cool box 100 according to an embodiment will be described with reference to the drawings.
(First embodiment)

The portable cool box 100 described in the present embodiment is a portable cool box for transporting cargo that needs cooling / cold storage such as fresh food. The portable cool box 100 includes a cool box 18 (see FIG. 2) and has a rectangular parallelepiped casing 1 that is long in the vertical direction (vertical direction in FIG. 1).
The casing 1 is surrounded by six wall surfaces (front wall surface portion 21, right wall surface portion 22, left wall surface portion 23, upper wall surface portion 24, lower wall surface portion 25, and rear wall surface portion 26). An opening 21a that communicates with the inside and outside of the cold insulation chamber 18 is provided in the central portion of the front wall portion 21, and a door 2 that closes the opening 21a in the center of the front wall portion 21 is provided so that the right end can be rotated. A locking mechanism 2a is provided near the center of the front side.

  The front wall surface portion 21, the right wall surface portion 22, the left wall surface portion 23, the upper wall surface portion 24, the lower wall surface portion 25, the rear wall surface portion 26, and the door 2 of the housing 1 include an exterior body that forms an outer peripheral surface, and an inner peripheral surface. It has a laminated structure of an interior body to be configured and an inner heat insulating material and an outer heat insulating material sandwiched between the outer body and the inner body. The exterior body and the interior body are formed of stainless steel or the like, a vacuum heat insulating material is used as the inner heat insulating material, and foamed urethane is used as the outer heat insulating material.

A recess 21b is provided at the upper end of the opening 21a, and a magnetic sensor 45 for detecting the opening and closing of the door 2 by magnetism is provided in the recess 21a.
At the upper end of the door 2, a magnetic reaction part 2b is provided at a position facing the magnetic sensor 45 in a state where the door 2 is closed. As the magnetic sensor 45, for example, a magnet operation type or an iron plate operation type can be used. When the magnet operation type is used, it is necessary to provide a magnet in the magnetic reaction part 2b. In the case of the iron plate operation type, it is necessary to provide a ferromagnetic material such as iron or nickel in the magnetic reaction part 2b.
When the door 2 is opened, the magnetic sensor 45 and the magnetic reaction part 2b are separated from each other so that no magnetism is detected by the magnetic sensor 45. Therefore, the open state of the door 2 is detected, the door 2 is closed, and the magnetic reaction part 2b. When approaching the magnetic sensor 45, the magnetic sensor 45 detects magnetism and detects that the door 2 is closed.
A power connection terminal portion 35 is provided above the outer left side end of the front wall portion 21. The power connection terminal portion 35 is provided with a concave portion for accommodating a connection end portion to which an external three-phase AC power source can be connected. When performing a cold storage operation and charging, which will be described later, the lid 35a is slid upward to connect a three-phase AC power source, which is an external power source, to the connection end and supply power.

  A display operation unit 40 described later is provided below the power connection terminal unit 35.

  Four casters 30 are provided on the lower surface of the portable cool box 100, and handles 31 are provided on the left and right side ends of the front surface and the left and right side ends of the back surface. When carrying the portable cool box 100, the operator pulls the handle 31 so that the caster 30 can move it.

As shown in FIG. 2, a machine room 17 that is partitioned from the cold room 18 by an upper wall surface portion 24 is provided above the portable cold box 100. The machine room 17 is surrounded by the front wall part 21, the right wall part 22, the left wall part 23, and the upper end part of the rear wall part 26 at the front, back, left and right, closed below by the upper wall part 24, and above the top plate 15 It is blocked by.
The upper wall surface portion 24 is formed higher on the front side (near the door 2) than on the rear side. That is, the bottom surface of the machine chamber 17 is formed in a substantially stepped shape having different heights between the first bottom surface portion 24a on the rear side and the second bottom surface portion 24b on the front side, and the second bottom surface portion 24b is located at a higher position. Is formed.
For this reason, the height from the second bottom surface portion 24 b to the top plate 15 is narrower than the height from the first bottom surface portion 24 a to the top plate 15.
The first bottom surface portion 24a and the second bottom surface portion 24b are connected via a slope-shaped bottom surface portion 24c. Since the first bottom surface portion 24a and the second bottom surface portion 24b are connected in a slope shape, the air flow can be made smooth during the operation of the blower 13 described later without narrowing the space in the cold insulation chamber 18. .

  On the 1st bottom face part 24a of the machine room 17, as a component of the refrigerating cycle apparatus 3 for cooling the cool storage material 10 provided in the cold storage room 18, the compressor 4, the condenser 5, and the expansion apparatus 6 (FIG. 4), the compressor 4, the condenser 5, and the expansion device 6 are sequentially connected by an evaporator 20 and a refrigerant pipe arranged below the cold storage chamber 18 to form a closed line of the refrigeration cycle. The cycle device 3 is configured.

The evaporator 20 is configured by arranging a plurality of refrigerant pipes extending in the front-rear direction in the left-right direction. The regenerator material 10 is placed on the upper surface of the lower wall surface portion 25 so as to sandwich the refrigerant pipe rows of the evaporator 20, and the evaporator 20 and the regenerator material 10 can exchange heat. Furthermore, each row of the regenerator material 10 arranged in a plurality of rows corresponding to each refrigerant piping row of the evaporator 20 is arranged with a gap in the left-right direction, and the gap in the cold insulation chamber 18 is placed in this gap. The air is configured to exchange heat with the regenerator material 10 so as to be cooled and flow into the cold insulation chamber 18.
The cold storage material 10 is a heat medium that reversibly transitions between a liquid and a solid and is packaged with an aluminum material, and absorbs and dissipates the latent heat that is generated along with the phase transition of the heat medium. In this case, the cold storage material 10 absorbs heat when melting, and dissipates heat (cold storage) when solidifying.

  Further, the regenerator materials 10 arranged in a plurality of rows are covered with a protective metal plate (not shown), and further, a heat insulating partition plate 27 arranged above the regenerator material 10 with a gap from the front wall surface portion 21. Is provided, and serves as a basis for luggage stored in the cold insulation chamber 18 while closing the upper end of the gap between the rows of the cold storage material 10.

A duct plate 28 facing the rear wall surface portion 26 with a gap is provided on the rear side of the cold insulation chamber 18. The upper end of the duct plate 28 is in contact with the upper wall surface portion 24, the lower end is in contact with the rear end of the heat insulating partition plate 27, and the left and right ends are in contact with the left wall surface portion 23 and the right wall surface portion 22, respectively. A path 12 is formed. (The direction of air flow is indicated by solid arrows in the figure.)
In addition, three internal blowers 11 are juxtaposed in the left-right direction above the duct plate 28, and the air in the internal air passage 12 is blown into the cold insulation chamber 18.

  As a result, when the internal fan 11 is operated in the internal cold storage operation, the air in the cold storage chamber 18 is sucked from the gap between the front wall portion 21 and the front end of the heat insulating partition plate 27, and the clearance between the cool storage materials 10 is While being cooled by exchanging heat with the street cold storage material 10, the air is guided into the internal air passage 12 and is blown into the cold storage chamber 18 from the internal air blower 11 above the internal air passage 12. As described above, the air in the cold storage chamber 18 can be cooled by circulating the air through the cold storage material 18 in the cold storage chamber 18.

The compressor 4 disposed on the first bottom surface portion 24a of the machine chamber 17 is a hermetic compressor having a horizontal cylindrical shape, and has a vertical cylindrical accumulator 4a in a suction pipe portion. The condenser 5 disposed in front of the compressor 4 on the first bottom surface portion 24a is a plate fin tube type air-refrigerant heat exchanger, and flows in the refrigerant pipe when blown by the blower 13. The heat exchange between the refrigerant and the air is promoted.
On the 1st bottom face part 24a, the condenser 5, the air blower 13, and the compressor 4 are arrange | positioned sequentially from the front side toward the back, and the air blower 13 is arrange | positioned so that it may blow from the front toward the back. Yes.
Further, on the front side of the condenser 5, electric power is supplied to the upper surface of the second bottom surface portion 24 b that has risen from the slope-shaped bottom surface portion 24 c to the internal fan 11 and the main control portion 61 that will be described later in the cold insulation operation described later. The lithium ion storage battery 7 which is a nonaqueous electrolyte secondary battery for this is arrange | positioned.

  The lithium ion storage battery 7 has a power storage unit in which a plurality of lithium ion battery cells are juxtaposed in the left-right direction in a metal case, and the plurality of cells are stacked in the vertical direction. Furthermore, the storage battery control part connected to the electrical storage part is accommodated in the metal case. This storage battery control unit monitors the temperature and the amount of charge / charge of the lithium ion storage battery 7 to control charging / discharging, and provides the state of the storage battery to the main control unit 61 described later.

As shown in FIG. 2, an air outlet 15 a is provided near the compressor 4 and the blower 13 of the top plate 15, and an air inlet 15 b is provided near the upper portion of the lithium ion storage battery 7.
The blowout port 15a and the suction port 15b are formed by a number of punching holes provided in the top plate 15, for example. (See Figure 3)

  Thereby, when the blower 13 is operated, the outside air sucked from the suction port 15b located at the front passes through the upper part of the lithium ion storage battery 7 and flows to the first bottom surface portion 24a side along the slope-shaped bottom surface portion 24c. It passes through the condenser 5 while exchanging heat, and is exhausted through the blower 13 from the outlet 15a.

Further, as shown in FIG. 4, the rectifier circuit unit 60 is arranged on the left side of the second bottom surface part 24b, and the main control unit 61 is arranged on the right side.
The rectifying circuit unit 60 includes a rectifying substrate for rectifying the power supply current supplied from the power connection terminal unit 35, and is connected to the main control unit 61, the compressor 4, the blower 13, and the lithium ion storage battery 7 to supply power. Supply.
The main control unit 61 is connected to the compressor 4, the blower 13, and the expansion device 6 and controls the cold storage operation by the refrigeration cycle device 3.
Further, when the three-phase AC power supply is disconnected, the power supply switching circuit, the open phase determination circuit, and the reverse phase determination circuit for switching the power supply to the main control unit 61 and the internal fan 11 from the three-phase AC power supply to the lithium ion storage battery 7. And a control board including an abnormality detection circuit and the like.
Further, the main controller 61 is connected to various sensors such as a temperature sensor for detecting the outside temperature, the cold room temperature, and the machine room temperature.
Further, the main control unit 61 is connected to the internal fan 11, the operation display unit 40, and notification means such as a communication module and a buzzer (not shown).
The operation display unit 40 has an operation unit for performing operation settings and the like of the portable cool box 100. Moreover, it has a display part which displays storage amount etc. based on the information provided from the storage temperature and the storage battery control circuit of the lithium ion storage battery 7.
When it is determined that there is an abnormality or failure of the device detected by the open state of the door 2 or various sensors, the main control unit 61 performs notification by display on the operation display unit 40 or notification means. In addition, it is also possible to transmit internal information and information such as abnormality / failure to an external terminal such as an external personal computer or tablet by a communication module.

The operation state of the portable cool box 100 configured as described above will be described below.
When the portable cool box 100 is carried into the delivery terminal and the power supply is connected to the power connection terminal 35, the compressor 4 is operated by the control signal of the main control unit 61, and the refrigeration cycle apparatus 3 is operated. The blower 13 also performs a blowing operation. That is, the refrigerant compressed by the compressor 4 is condensed by the condenser 5, expanded by the expansion device 6 and evaporated by the evaporator 20 while exchanging heat with the air blown by the blower 13. The livestock cooling material 10 is cooled by the refrigerant latent heat of evaporation of the evaporator 20 and the livestock cooling operation is performed.

  Further, when the storage battery control unit 61 detects that the storage amount is less than the predetermined value, the lithium ion storage battery 7 is charged.

Here, the non-aqueous electrolyte secondary battery such as the lithium ion storage battery 7 generates heat at the time of charging / discharging, and has a characteristic that when the temperature becomes higher than a predetermined temperature, the storage amount is drastically reduced and the life is remarkably reduced. Yes. In particular, if it is placed in the same space as a heat generating component such as a refrigeration cycle device, the amount of stored electricity decreases drastically due to heating by the exhaust heat of the condenser or the heat of the compressor generated during operation of the refrigeration cycle device. The lifetime of itself may be significantly reduced.
The lithium ion storage battery 7 which is a non-aqueous electrolyte secondary battery also has a characteristic of generating heat during charging and discharging, and has a characteristic that the storage capacity is remarkably reduced when the temperature rises to a predetermined value or more. For this reason, by operating the blower 13 during the charging operation, the lithium ion storage battery 7 is cooled by the outside air, and a significant reduction in the storage capacity can be prevented.

  In particular, the cold storage operation and the storage operation are performed at the same time, the lithium ion storage battery 7 is arranged on the windward side as in the above-described configuration, and the condenser 5 and the compressor 4 are arranged on the leeward side at a certain distance. High temperature air is not blown to the lithium ion storage battery 7. Further, the outside air sucked from the suction port 15b becomes cooling air for cooling the lithium ion storage battery 7, and the temperature rise of the lithium ion storage battery 7 can be suppressed and the storage capacity can be prevented from being significantly reduced.

When the portable cool box 100 moves from the delivery terminal, the three-phase AC power is removed from the power connection terminal 35 and switched to the power supply from the lithium ion storage battery 7 by the power switching circuit of the main control unit 61. .
Then, based on the operation of the operation display unit 40 and the temperature detected by the temperature sensor provided in the cold storage chamber 18, the main control unit 61 determines ON / OFF of the cold storage operation and drives the internal fan 11.

  By configuring as described above, it can be operated by using a secondary battery that enables longer life, higher storage capacity, and faster charging than lead storage batteries, such as non-aqueous electrolyte secondary batteries such as lithium ion storage battery 7 It is possible to make the portable cold storage 100 having a high rate, and without giving the lithium ion storage battery 7 the heat of the condenser 7 and the compressor 4 generated during the cold storage operation by connecting an external power source. It is possible to prevent a significant decrease in the service life due to the abnormally high temperature of the storage battery 7 and to provide a more reliable portable cool box 100.

  In other words, the refrigeration cycle apparatus having a heat generating component placed in a narrow machine room and the stationary water electrolyte secondary battery are spaced apart from each other, and the nonaqueous electrolyte secondary battery is cooled by the sucked outside air. By exhausting from the compressor side, it is possible to provide a portable cooler with high reliability and a long durability by preventing a decrease in the amount of power stored in the secondary battery and a decrease in life due to an abnormally high temperature.

(Second Embodiment)
The portable cool box 101 according to the second embodiment has substantially the same configuration as the portable cool box 100 of the first embodiment, and has a suction port 15c provided in the top plate 15 as a different configuration. And the arrangement of the outlet 15d is different from the arrangement of the compressor 4, the condenser 5 and the blower 13 of the refrigeration cycle apparatus 3 housed in the machine room 17.
Specifically, as shown in FIG. 5, the suction port 15 c is disposed on the right end side of the top plate 15, and the blowout port 15 d is disposed on the left end side of the top plate 15.
Further, as shown in FIG. 6, the condenser 5, the blower 13, and the compressor 4 are sequentially arranged on the first bottom surface portion 24 a from the right to the left. Further, the condenser 4 and the blower 13 are disposed in the vicinity of the center of the first bottom surface portion 24a in the left-right direction, and are located to the left of the suction port 15c of the top plate 15 and to the right of the blowout port 15d. Yes.
Moreover, the left-right direction position is arrange | positioned substantially the same as the lithium ion storage battery 7 arrange | positioned on the 2nd bottom face part 24b.

  In other words, the suction port 15c and the blowout port 15d are juxtaposed above the second bottom surface portion of the top plate 15, and the blowing direction by the blower 13 is substantially the same as the direction from the first bottom surface portion toward the second bottom surface portion. Go straight.

  As described above, the suction port 15c, the blowout port 15d, the condenser 5, the blower 13, and the lithium ion storage battery 7 are arranged, so that when the cold storage operation is performed, the blower 13 operates to suck from the suction port 15c. After the outside air that has passed through the condenser 5 does not go to the lithium ion storage battery 7 and goes to the outlet 15d, the condensation heat of the condenser 5 is not supplied to the lithium ion storage battery 7.

  In addition, since the lithium ion storage battery 7 is not arranged in the blowing direction of the blower 13, even if the cold storage operation is performed using the portable cold storage 101 in an environment of low outside air temperature, the lithium ion storage battery 7 is cooled more than necessary. Thus, a decrease in the amount of stored electricity at low temperatures can be prevented.

  In the second embodiment described above, the machine room 17 has been described as a single space, but a partition plate for preventing heat inflow from the condenser and the compressor 5 side to the lithium ion storage battery 7 side is provided. It may be divided into a plurality of spaces.

  By using the portable cool box of the first embodiment and the second embodiment described above, the air heated through the condenser when performing the cold storage operation is a nonaqueous electrolyte secondary battery. It is possible to prevent the lithium ion storage battery from being in an abnormally high temperature state without being blown to the lithium ion storage battery. Thereby, the fall of the amount of electrical storage of a lithium ion storage battery and a lifetime fall can be prevented, and a reliable portable cold storage can be provided.

  Further, a non-aqueous electrolytic secondary battery such as a lithium ion storage battery can be configured to be less subject to shape restrictions, unlike a lead storage battery. For example, a thin lithium-ion battery cell with a module configuration that is arranged side by side in the left-right direction while keeping the height of the stack in the vertical direction low, even in a narrow space in the height direction that cannot be placed with conventional lead-acid batteries Can be arranged.

  By using the magnetic sensor 45 as a configuration for detecting the opening and closing of the door 2 of the portable cooler 100, 101, it is possible to have higher durability, airtightness, and waterproofness than when a push button mechanical switch or the like is used. It can be set as the portable cold storage 100,101. Further, when the door 2 is in the open state, even if a foreign matter such as a non-magnetic material contacts the recess 21b, the door 2 is not erroneously detected as being closed, and the open state of the door 2 is accurately detected. be able to.

In the lithium ion storage battery used in the portable cold storage 100, 101 of the first and second embodiments described above, a lithium ion storage battery in which the negative electrode material is lithium titanate may be used.
Lithium ion storage batteries using lithium titanate as the negative electrode material may become abnormally hot due to heat generation during charging and discharging and heating from the components of the refrigeration cycle device, which may cause a decrease in the amount of electricity stored and a significant decrease in service life. is there.
However, by adopting the same configuration as the portable cold storage 100, 101 of the first and second embodiments, it is possible to suppress a decrease in the amount of stored electricity and a decrease in life, and the portable cold storage 100 with high reliability. , 101 can be provided.

In addition, a lithium ion storage battery using lithium titanate as a negative electrode material has high safety, and can have a larger capacity and a shorter charge completion time. For example, even if the machine room is damaged and the lithium ion battery is damaged due to a collision or falling during transportation, a traffic accident while being transported by a truck, etc., it is difficult to cause an internal short circuit or abnormal heat generation of the storage battery itself. Can be prevented, and a highly safe portable cooler can be provided.
Further, the reinforcing material around the machine room can be reduced, and a cheaper and lighter portable cooler can be obtained.

In addition to those described above, other nonaqueous electrolyte secondary batteries such as sodium ion storage batteries may be used.
In the above embodiment, the door 2, the power connection terminal portion 35, and the operation display portion 40 are provided on the front surface, but may be provided on the left and right side surfaces.
Moreover, in the said embodiment, although the 1st bottom face part 24a and the 2nd bottom face part 24b of the upper wall surface part 24 are made into the substantially step-like structure which has a height difference, it is not limited to this, It forms as a continuous inclined surface. Also good.
Moreover, you may provide the protective case for accommodating and protecting electric components, such as the lithium ion storage battery 7 arrange | positioned in the machine room 17, the rectifier circuit part 60, and the main-control part 61. FIG.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the invention described in the claims and the equivalents thereof as well as included in the scope and gist of the invention.

Claims (5)

A housing having a cold storage space and a cold storage material inside, a condenser, a condenser, a blower that blows air to the condenser, and a machine room that houses a secondary battery,
The secondary battery is a non-aqueous electrolyte secondary battery,
The portable refrigerating machine, wherein the secondary battery is disposed at a position where the air blown from the blower to the condenser and subjected to heat exchange does not hit. A housing having a cold storage space and a cold storage material inside, a condenser, a condenser, a blower that blows air to the condenser, and a machine room that houses a secondary battery,
The secondary battery is a non-aqueous electrolyte secondary battery,
The machine room is provided with a suction port that is arranged on the secondary battery side and sucks outside air, and a blowout port that is arranged on the condenser side and blows out the outside air sucked from the suction port,
The air blower blows air from the suction port toward the blowout port. A housing having a cold storage space and a cold storage material inside, a condenser, a blower that blows air to the condenser, and a machine room that houses the secondary battery are provided in the upper portion of the housing,
The secondary battery is a non-aqueous electrolyte secondary battery,
The bottom surface of the machine room has a first bottom surface portion where the condenser is disposed and a second bottom surface portion where the secondary battery is disposed, and the second bottom surface portion is higher than the first bottom surface portion. Formed in position,
The machine room is provided with a suction port that is arranged on the secondary battery side and sucks outside air, and a blowout port that is arranged on the condenser side and blows out the outside air sucked from the suction port,
The air blower blows air from the suction port toward the blowout port. A housing having a cold storage space and a cold storage material inside, a condenser, a blower that blows air to the condenser, and a machine room that houses the secondary battery are provided in the upper portion of the housing,
The secondary battery is a non-aqueous electrolyte secondary battery,
The bottom surface of the machine room has a first bottom surface portion on which the condenser is disposed and a second bottom surface portion on which the secondary battery is disposed, and the second bottom surface portion is higher than the first bottom surface portion. Formed into
The machine room is provided with a suction port for sucking outside air into the machine room, and a blowout port for blowing outside air sucked from the suction port to the outside of the machine room,
The suction port and the blowout port are disposed above the first bottom surface,
A portable cool box characterized in that a blowing direction by the blower is perpendicular to a direction from the first bottom surface portion to the second bottom surface portion.   The said 1st bottom face part is arrange | positioned in the front side, the said 2nd bottom face part is arrange | positioned in the back side, The door which opens a cold storage space in the front surface of the said housing | casing was provided. 4. The portable cold storage according to 4.

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