JP4503049B2 - Storage - Google Patents

Description

  The present invention relates to a storage cabinet that keeps the inside of a cabinet cold by a thermo module to store the beverage in a cold state or store food at a low temperature.

  For example, as a storage container that cools or keeps the inside of a container that stores conventional food and drink with a thermo module, for example, a heat insulating container for storing the stored object at a predetermined temperature, and a thermo provided on the rear wall of the heat insulating container Module, inner box for heat absorption formed of aluminum metal attached to the inner surface of the thermo module (heat absorption side heat exchange surface), and the outer surface of the thermo module (heat dissipation side heat exchange) And a heat sink for heat dissipation attached to the surface portion. Then, the rear wall of the heat insulating container is moved so that the heat inside the box is moved to the outside surface by the thermo module through the inner box for absorbing heat, and the moved heat is released outside the box via the heat sink for heat dissipation. A cover having an air inlet and an air outlet is attached to the outside of the air passage to form a ventilation path (outside chamber).

  As such a storage, for example, in Patent Document 1, the outside chamber is configured with an intake port, a heat sink, an axial blower, and an exhaust port. The blower is arranged in the upper part of the outside chamber, sucks heat radiation air from the bottom through a filter, takes heat of the heat sink heated by the thermo module, and exhausts it to the rear of the storage.

JP 2006-336906 A

  Since the conventional storage is configured as described above, in a storage having a storage capacity of about 35 L to 45 L, the storage temperature is set to a set temperature of 5 ° C. in the ambient environment in the summer where the ambient temperature is about 30 ° C. In order to maintain, improve the performance on the heat absorption side by applying the maximum voltage allowed by the thermo module, or improve the performance on the heat dissipation side by increasing the air flow rate by increasing the rotation speed of the blower There was a need. However, even if it is possible to ensure sufficient heat absorption performance and maintain the internal temperature, there is a problem that the energy efficiency of the thermo module deteriorates and the power consumption of the storage increases. In addition, if the rotation speed of the blower is increased to improve the performance on the heat dissipation side, the noise caused by the flow of air, wind noise, bearing noise, or vibration noise generated by transmitting vibration due to rotation to the housing increases. There was a problem.

  Further, since the blower is disposed at the exhaust port portion, there is a problem that the sound source of the blower is close to the user's ear and that reflected sound from the wall on the back of the casing is likely to occur. Furthermore, there was a problem that water intrusion from the upper part of the storage led to a failure of the blower. In addition, it is necessary to provide a narrow lattice at the exhaust port so that fingers do not enter to prevent injury due to the rotating object of the blower, and there is a problem that an increase in pressure loss causes a decrease in air volume and an increase in blowing sound.

  This invention was made in order to solve the above-mentioned subject, and while providing the cooling capacity which keeps the internal temperature at a preset temperature, it provides a storage which reduces various noises caused by the blower. With the goal.

The storage according to the present invention stores the stored items in a range of 3 ° C to 7 ° C, and is formed on the outside of the rear wall of the heat insulation container having a capacity of 35L to 45L and the heat insulation container, and is opened at the bottom. An external chamber having an intake port and an exhaust port opened in the upper part, and disposed in the heat insulating container, having a Peltier element, a heat absorption side heat exchange surface part, and a heat radiation side heat exchange surface part, and the inside of the heat insulation container is predetermined. A thermo module that maintains temperature, a blower that circulates air to the outside chamber, a control board that drives the thermo module and the blower to control the temperature in the heat insulating container, and an upper portion of the intake port An electrical component box that accommodates the control board, a heat sink that exchanges heat with the air introduced into the heat-dissipation side heat exchange surface of the thermo module and the outside chamber, and an air passage that covers the heat sink With components The thermo-module are arranged two on the left and right, the blower, the disposed below the electrical component box of the upper and the heat sink, upper end compartment outside chamber with the lower end portion of the blower is disposed in the heat insulating container side The air path forming member forms a ventilation path through which the air introduced from the air inlet by the blower passes through the heat sink to the upper air outlet, and the air outlet Is formed in a recess formed in the uppermost rearmost part of the outer chamber, on the surface where the air exhaust direction is the rear of the outer chamber, the exhaust port forming surface extending in the vertical direction of the rearmost surface of the outer chamber Even if the rearmost surface is attached to the wall so that it can be exhausted from the exhaust port and water enters the outside chamber from the exhaust port so that it is located between the surface and the vertically extending surface of the plate member The air passage forming member Sink, but that to prevent the ingress of water into the blower and the electric component box.

According to the present invention, when the capacity of the heat insulating container is in the range of 35L to 45L and two thermo modules are provided, one having good cooling efficiency can be obtained. In addition, since the blower is arranged between the heat sink and the electrical component box in the outside chamber, the noise caused by the increase in the rotation speed of the blower is prevented from being released to the outside of the storage room, and the user feels Noise can be reduced. In addition, two thermo modules are arranged on the left and right sides, and the blower is arranged on the upper part of the electrical component box and the lower part of the heat sink, and is inclined with respect to the rear wall of the heat insulating container, so that the front and rear dimensions of the outer chamber can be reduced. In addition to being able to reduce the size, it is possible to allow the air sucked from the intake port to pass through the electrical component box without stagnation and to efficiently cool the electrical component box. Furthermore, the exhaust port of the outer chamber is opened in a recess formed in the uppermost rearmost part of the outer chamber on the surface where the air exhaust direction is the rear of the outer chamber. Since it is located between the vertical extension surface of the back surface and the vertical extension surface of the plate member, it is possible to secure a ventilation path for the exhaust port even if the back cover of the outside chamber is attached to the wall side. And since it was configured to fix the blower with the air passage forming member that forms the ventilation path of the air flowing through the heat sink, the fixing mechanism of the blower can be configured at low cost and easily prevent water from entering from the exhaust port Can do.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing a configuration of a storage according to Embodiment 1 of the present invention. 2 is a sectional view taken along line AA in FIG. 1, FIG. 3 is a sectional view taken along line BB in FIG. 2, and FIG. 4 is a sectional view taken along line CC in FIG. The configuration of the main storage will be described with reference to FIGS. In Embodiment 1, the preservation | save which hold | maintains the internal temperature at about 3-7 degreeC using the thermomodule 10 is shown. The heat insulating container 1 includes an inner box 2, an outer box 3, and a heat insulating material 4 injected so as to be interposed between the inner box 2 and the outer box 3. The inner box 2 is formed of an aluminum metal plate having good thermal conductivity. Moreover, the opening part is provided in the front part of the heat insulation container 1, and the opening / closing door 5 is provided in the said opening part. The capacity | capacitance of the heat insulation container 1 has about 40L. The capacity | capacitance of a heat insulation container can be changed suitably. An external chamber 6 is defined on the outside of the rear wall of the heat insulating container 1.

  The thermo module 10 includes a Peltier element 10a, a heat absorption side heat exchange surface portion 10b, and a heat radiation side heat exchange surface portion 10c. On the rear wall of the heat insulating container 1, a storage hole having substantially the same size as the thermo module 10 is formed through the outer box 3 and the heat insulating material 4, leaving the metal plate forming the inner box 2, and the thermo hole is formed in the storage hole. A module 10 is provided. Also, an aluminum alloy heat transfer block 11 having good thermal conductivity is interposed between the thermo module 10 and the inner box 2, and the heat transfer block 11 is joined to the inner box 2 in a state of being thermally conducted by screwing. is doing. Further, the heat absorption side heat exchange surface portion 10 b of the thermo module 10 and the inner box 2 are joined via the heat transfer block 11 so that heat can be transferred. The heat transfer block 11 is fixed integrally with the thermo module 10 by resin. Further, as shown in FIG. 3, two thermo modules 10 are arranged on the left and right.

  The heat sink 12 is joined to the heat radiation side heat exchange surface portion 10c of the thermo module 10 in a heat conductive manner. The heat sink 12 has a large number of aluminum fins 12a arranged in the vertical direction, and has a function of circulating air in the vertical direction from the lower side to the upper side to exchange heat. The air path forming member 13 is disposed on the back surface of the heat insulating container 1 so as to cover the heat sink 12, and the back cover 14 covers the entire back surface of the air path forming member 13 and the heat insulating container 1, and outside the rear wall of the heat insulating container 1. A chamber 6 is formed. An axial blower 20 is fixed to the air path forming member 13 below the heat sink 12. Details of the air passage forming member 13 will be described later.

  As shown in FIG. 2, the axial blower 20 is disposed such that the upper end portion is below the center line D in the vertical direction of the storage. The axial blower 20 is provided to be inclined with respect to the rear wall of the heat insulating container 1, and the lower end portion is disposed on the heat insulating container 1 side and the upper end portion is disposed on the rearmost side of the external chamber 6. This is to form a ventilation path for allowing the air to flow from the electrical component box 32 to the heat sink 12 without stagnation, and the inclination angle varies depending on the shape and arrangement of the electrical component box 32, the axial blower 20, and the heat sink 12. . Note that the storage according to the first embodiment is configured with an inclination angle of approximately 45 degrees with respect to the rear wall of the heat insulating container 1.

  Further, as shown in FIG. 4, two axial flow fans 20 corresponding to the number of thermo modules 10 (not shown) and heat sinks 12 are arranged. The number of installed axial flow fans 20 can be changed as appropriate according to the number of thermo modules 10 and heat sinks 12. As shown by the air flow 90 in FIG. 4, the air flow 90 that flows in from the air inlet and passes through the rear surface of the electrical component box 32 passes through the axial blower 20 and flows between the heat sink 12 and the air path forming member 13. It passes through and is discharged from the exhaust port 16.

  FIG. 5 is a perspective view of the air passage forming member of the storage according to Embodiment 1 of the present invention, and FIG. 5 (a) is a view showing a state where the axial blower is removed, and FIG. 5 (b). FIG. 3 is a view showing a state where an axial blower is attached. The air passage forming member 13 includes an air passage forming portion (plate member) 13a that covers the heat sink 12, a fixed portion (fixing member) 13b that is an extension from the air passage forming portion 13a and is bent toward the back cover side, and a fixing portion. It is comprised by the fixing | fixed part (fixing member) 13c extended to the heat insulation container side in the direction substantially orthogonal to 13b. A locking piece 13d and a locking piece 13e for fixing the axial flow fan 20 are formed on the fixed part 13b and the fixed part 13c, respectively, and a locking claw 13f is provided at the end of the locking pieces 13d and 13e. As shown in FIG. 5B, the axial blower 20 is fixed by the locking claws 13f.

  U-shaped concave portions are provided on both sides of the locking piece 13d, and the locking piece 13d is formed in a shape in which the end of the fixed portion 13b is cut out. On the other hand, the locking piece 13e is formed in a shape rising from the fixing portion 13c. The air passage forming portion 13a, the fixing portions 13b and 13c, the engaging pieces 13d and 13e, and the engaging claws 13f forming the air passage forming member 13 are integrally molded resin molded products. By integrally molding each member forming the air passage forming member 13 with resin, the air passage and the fixing member of the axial blower 20 can be configured with inexpensive members, and the shaft using the spring property of the resin can be used. The air blower 20 can be easily fixed. In the first embodiment, the locking pieces 13d and 13e are arranged on the primary side of the air flow of the axial blower 20, but may be arranged on the secondary side. Further, the shapes of the locking pieces and the locking claws are not limited to the above shapes.

  As shown in FIG. 2, the control board 31 is accommodated in an electrical component box 32 made of metal, and is disposed at the lower part of the axial blower 20 and the upper part of the intake port 15. The intake port 15 is provided so as to be located below the back cover 14 and below the electrical component box 32 and to be located in substantially the same plane as the bottom surface of the heat insulating container 1. The exhaust port 16 is provided in a substantially L-shaped recess provided on the uppermost back surface of the back cover 14 so that the air exhaust direction is the back direction of the storage, and further includes a lattice 17. Yes. The formation surface of the exhaust port 16 is configured to be positioned between the formation surface of the back cover 14 and the formation surface of the air passage forming portion 13 a of the air passage forming member 13 at the upper portion of the heat sink 12. Thereby, the ventilation path of the exhaust port 16 can be ensured even if the back cover 14 is attached to the wall side. Even when water enters from the exhaust port 16, the exhaust port 16 is provided at a position retracted toward the back cover 14 from the air channel forming part 13 a of the air channel forming member 13. Water can be prevented from entering the blower 20 and the electrical component box 32.

  Next, the operation of the storage will be described with reference to FIG. When the operation of the storage is started, DC power is supplied to the thermo module 10, and the heat absorption operation is performed at the heat absorption side heat exchange surface portion 10b of the thermo module 10, and the axial blower 20 is operated, and the arrow in the figure As shown, the air flow 90 passes through the filter 30 and is sucked from the intake port 15 and circulates through the aluminum fins 12a of the heat sink 12 inside the air passage forming member 13 via the axial blower 20, and the ceiling. It is guided to the grid 17 from the exhaust port 16 on the lower back surface of the wall 18 and discharged. Thereby, in the heat insulation container 1, the inner box 2 of the heat insulation container 1 is cooled via the heat transfer block 11, and the inside of the heat insulation container 1 is controlled to predetermined temperature. Further, in the heat radiation side heat exchange surface portion 10c of the thermo module 10, heat radiation is performed between the heat flowing through the air passage forming member 13 via the heat sink 12, and the amount of heat absorbed in the heat insulating container 1 is converted into air. Heat is dissipated.

  As described above, according to the first embodiment, the axial blower is configured to be disposed below the ventilation path between the heat sink and the electrical component box and the central portion of the external chamber. It is possible to effectively cool the electrical component box warmed by the heat generated from the substrate, noise caused by the blower is reduced, and noise felt by the user can be reduced. Moreover, since the noise of the storage is reduced, the rotational speed of the axial blower can be increased to increase the air volume, thereby improving the performance on the heat dissipation side.

  Furthermore, according to this Embodiment 1, since it comprised so that an axial-flow fan might be arrange | positioned below the centerline of the up-down direction of an exterior chamber, the axial-flow fan is kept away from an exhaust port, and the noise which leaks from an exhaust port Can be reduced.

  Further, according to the first embodiment, the air passage forming portion that covers the heat sink and forms the air passage, and the fixing portion having the locking piece and the locking claw for fixing the axial blower are integrally formed by resin molding. Since it comprised as mentioned above, while forming a ventilation path using an inexpensive member, it becomes possible to fix an axial-flow fan. Moreover, it becomes possible to fix the axial blower by utilizing the spring property of the resin, and the fixing work can be facilitated.

  Further, according to the first embodiment, the exhaust port and the lattice forming surface of the exhaust port are configured to be positioned between the rear cover forming surface and the air path forming portion forming surface above the heat sink. Therefore, the ventilation path of the exhaust port can be secured even if the back cover surface is attached to the wall side. Moreover, even when water spills from the upper part of the storage and water enters from the exhaust port, the air passage forming member can prevent water from entering the heat sink, the axial blower, the electrical component box, and the like.

  Furthermore, according to this Embodiment 1, since it comprised so that an axial blower might be inclined and arrange | positioned with respect to the rear wall of a heat insulation container, the air which flows in from an inlet port is allowed to pass through an electrical component box without delay. Can efficiently cool the electrical box. In addition, the front and rear dimensions, which are the thickness of the outer chamber, can be reduced, and a large-diameter axial blower can be provided without increasing the front and rear dimensions of the storage, which is the dimension from the door to the back cover. A large air volume and low noise axial fan can be selected.

  In the first embodiment, a heat transfer block is provided between the heat insulating container and the thermo module, and the heat absorption side heat exchange surface portion of the thermo module is arranged to be able to transfer heat to the inner box via the heat transfer block. Although the example comprised in this way was shown, you may comprise so that the heat absorption side heat exchange surface part of a thermo module may be directly arrange | positioned with an inner case so that heat transfer is possible.

  In the first embodiment, an example is shown in which the storage capacity is 40L and two thermo modules are provided. However, the thermo module is adapted to the design matters of the storage such as storage capacity and cooling efficiency. The number to be provided can be changed. Two to four thermomodules with good cooling efficiency can be obtained for the range of storage capacity 30L to 60L, especially when the storage capacity is in the range of 35L to 45L. If two are provided, one having good cooling efficiency can be obtained.

It is a perspective view of the storage which concerns on Embodiment 1 of this invention. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is CC sectional view taken on the line in FIG. It is a perspective view of the air path formation member of the storage according to Embodiment 1 of the present invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Heat insulation container, 2 Inner box, 3 Outer box, 4 Heat insulation material, 5 Opening / closing door, 6 Outer chamber, 10 Thermo module, 10a Peltier element, 10b Heat absorption side heat exchange surface part, 10c Heat radiation side heat exchange surface part, 11 Heat transfer Block, 12 Heat sink, 12a Aluminum fin, 13 Air path forming member, 13a Air path forming part, 13b, 13c Fixing part, 13d, 13e Locking piece, 13f Locking claw, 14 Back cover, 15 Air inlet, 16 Air outlet 17 grid, 18 ceiling wall, 20 axial blower, 30 filter, 31 control board, 32 electrical component box, 90 air flow.

Claims (3)

A stored container in a range of 3 ° C to 7 ° C, and a heat insulating container having a capacity of 35L to 45L ;
A compartment formed outside the rear wall of the heat insulating container, having an intake opening opened at the lower part and an exhaust opening opened at the upper part,
A thermo module disposed in the heat insulation container, having a Peltier element, a heat absorption side heat exchange surface portion, and a heat radiation side heat exchange surface portion, and holding the inside of the heat insulation container at a predetermined temperature;
A blower that circulates air through the external chamber;
A control board for controlling the temperature in the heat insulation container by driving the thermo module and the blower;
An electrical component box disposed immediately above the intake port and storing the control board;
A heat sink that exchanges heat with the air introduced into the heat-dissipation side heat exchange surface of the thermo module and the outside chamber;
An air path forming member covering the heat sink,
Two thermo modules are arranged on the left and right,
The blower is disposed at the upper part of the electrical component box and the lower part of the heat sink, the lower end portion of the blower is disposed on the heat insulating container side, and the upper end portion is disposed on the rearmost side of the external chamber,
The air path forming member forms a ventilation path for discharging the air introduced from the intake port by the blower through the heat sink to the upper exhaust port ,
The exhaust port is opened on the surface where the exhaust direction of the air is the rear of the outer chamber in a recess formed in the uppermost back of the outer chamber,
The exhaust port forming surface is positioned between the vertical extension surface of the rearmost surface of the outer chamber and the vertical extension surface of the plate member, and exhausts from the exhaust port even if the rearmost surface is attached to the wall. The air passage forming member prevents water from entering the heat sink, the blower, and the electrical box even if water enters the outside chamber from the exhaust port. Characteristic storage.   The storage according to claim 1, wherein a plurality of blowers are disposed below the center line in the vertical direction of the outer chamber.   The air passage forming member is composed of a plate member constituting the air passage and a fixing member provided with a locking piece for fixing the blower, and the plate member, the fixing member and the locking piece are integrally molded with resin. The storage according to claim 1 or claim 2, wherein

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