JP3338289B2 - Cooling storage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling storage for keeping articles cool, and more particularly to a cooling storage loaded on a truck or the like and transported.

[0002]

2. Description of the Related Art Conventionally, this kind of cold storage has been used in a distribution system of low-temperature goods such as fresh food, and is loaded on a carrier of a delivery vehicle such as a truck and transported together with the cooling storage. No. 3,83,784 (F25D11 / 00).

[0003] In such a cooling storage, since the supply of AC power is cut off during transportation, a regenerator is arranged in the storage for storing goods (delivery items). A method of keeping the items in the refrigerator cool is adopted.

[0004]

By the way, if the heat-insulating box of this kind of cooling storage has an upper opening, if the heat-insulating door for opening and closing the opening is a hinge-opening type, one side is used when delivering the goods. The product must be taken out with the other hand while the door is opened and placed with the other hand, which makes the delivery work extremely complicated.

Therefore, if the opening is closed by a plurality of detachable heat-insulating lids, when the opening is opened, the detached heat-insulating lid can be placed on another heat-insulating lid, thereby facilitating the operation. However, since significant vibration is applied to the cooling storage during transportation, there is a problem that simply placing the heat-insulating lid may cause the cooling storage to fall off or shift, causing leakage of cool air from the gap, and deteriorating the cooling performance.

Further, in the case where the regenerator is disposed, the vibration causes the regenerator to move, and the bag ruptures due to contact with the surrounding wall surface.

[0007] The present invention has been made to solve the above-mentioned conventional technical problem, and an object of the present invention is to provide a cooling storage in which the cooling performance during transportation is improved.

[0008]

SUMMARY OF THE INVENTION The cooling storage of the present invention comprises:
Cooling the interior of the heat insulation box with a cold storage agent.
Equipped with a heat conductive case attached to the interior of the heat box,
The cool storage agent is constructed by enclosing brine with high specific heat in the bag.
The case is stored in the case, and the case is
Is composed of a curved inner surface smooth member,
Has a curved cross-section on the widest surface and protrudes inward
The projection is bent.

According to the present invention, the heat is well introduced into the heat insulating box.
A case was attached, and a cold storage agent was stored in this case.
Therefore, when the cold storage is transported,
The inside of the case can be kept cool and the corner
Because it is composed of curved inner smooth members, vibration during transportation
Turn the disadvantage that the dough bag also applied to the cold storage agent to rupture in advance
You can avoid it.

The widest surface of the case has a curved cross section.
Since the projection that protrudes inward in a shape is bent,
When the cold storage agent freezes, does the cold storage agent engage with the protrusions?
Us. Therefore, vibration is applied during transportation as described above.
Even if the regenerator does not displace, it is stable
Will be held properly and safely.

[0011] Furthermore, the cold storage agent is placed in a bag with a briquette having a large specific heat.
And heat conduction is smooth.
The freezing time is also reduced. Also, the cool storage agent in the bag is strange.
Since it can be shaped, the cold storage agent deforms and freezes as it freezes.
Will adhere to the surface. This allows the cool storage
Cooling of the inside will be performed more smoothly.
You.

The cooling storage according to the invention of claim 2 is as described above.
And a plurality of projections are formed, and
The temperature sensor is located inside the case
You.

According to the second aspect of the present invention, in addition to the above,
A plurality of raised portions are formed, and the
With the temperature sensor, the ability to hold the cold storage agent is further improved.
As well as the temperature sensor, the cold storage agent
The temperature sensor is sandwiched between the case and
It is possible to prevent misalignment and falling off of the
become.

Since the regenerator is contained in a bag, the temperature
It can be easily deformed according to the shape of the sensor. This allows
It also improves the adhesion between the regenerator and the temperature sensor.
You.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a cooling storage 1 of the present invention, FIG. 2 is a front view of the cooling storage 1, and FIG.
FIG. 4 is a longitudinal sectional view of one side of the heat insulating box 2 of the cooling storage 1.

The cooling storage 1 of the present invention is used, for example, for mailing fresh foods (articles) while keeping them cool. When the goods are stored in a delivery base, the cooling storages 1 and trucks are used together. It is loaded on the carrier of the delivery vehicle and transported. Then, after arriving at the delivery destination, the goods are taken out from the cooling storage 1 and delivered.

The cooling storage 1 has a main body composed of a heat insulating box 2 opened on the upper surface and a lower structure 3 attached to the lower surface of the heat insulating box 2. Insulated box 2
Is a steel plate (stainless steel) opened on the upper surface as shown in FIG.
Box 4 and inner box 6 made of metal, a connection breaker 7 made of hard resin for connecting between upper ends of both boxes 4 and 6, and a space surrounded by these two boxes 4, 6 and breaker 7. And a polyurethane foam insulation material 8 filled by an in-situ foaming method.

In this case, an inward flange 4A is formed at the upper end of the outer box 4 after being bent inward at a right angle and then bent downward at a right angle. An outward flange 6A is formed, which is bent at a right angle to the right and then bent at a right angle downward. The breaker 7 has a substantially L-shaped cross section having an upper surface 7A and an inner surface 7B.
An engagement groove 7C that opens upward is formed inside the lower end of B.

First, the upper surface 7A is screwed to the upper surface of the inward flange 4A from above with the upper surface 7A and the upper surface of the inner surface 7B of the breaker 7 in contact with the rear surface of the inward flange 4A of the outer box 4. In this state, the inner box 6 is dropped into the outer box 4 from above and inserted, and the tip of the outward flange 6A is inserted into and engaged with the engaging groove 7C of the breaker 7 from above. As a result, the outer box 4 and the inner box 6 are connected with an interval therebetween.

An evaporating pipe 9 constituting a cooler of the cooling device R is mounted on the side (outside) of the inner box 6 on the side of the outer box 4 in a meandering manner by a fixture 11 made of a metal plate or aluminum tape. And has a heat conduction relationship with the inner box 6. In this state, the heat insulating material 8 is foam-filled between the two boxes 4 and 6, and the respective members are integrated to complete the heat insulating box 2.

The inside of the inner box 6 of the heat-insulating box 2 serves as a storage room 12 serving as a storage, and a hard synthetic resin breaker 13 for decoration is attached to the upper opening edge. The breaker 13 has a crank-shaped cross section including an upper side 13A, a vertical side 13B, and a lower side 13C, and the upper side 13A conceals a screw-fastened portion of the breaker 7.

The vertical side 13B of the breaker 13 and the lower side 1
3C is in intimate contact with the inward flange 4A of the outer box 4 and the surface of the breaker 7 and the outward flange 6A of the inner box 6, respectively. 14 are configured. Further, the vertical side 13B and the lower side 1B of the breaker 13 constituting this paragraph section 14
3C has a curved shape with a relatively large curvature, and a soft fin 16 projecting obliquely inward and upward at the tip of the lower side 13C by double extrusion molding.
3 and integrally formed.

The upper opening of the storage room 12 is closed by two heat insulating lid members 17 and 18 so as to be openable and closable. Each of the heat insulating lid members 17 and 18 has the same shape, and the periphery of the rectangular outer surface material 21 and the inner surface material 22 made of a steel plate (stainless steel) is connected by a hard synthetic resin frame member 23 to be inside. The heat insulating material 24 is filled.

At the center of the outer surface material 21 of the heat insulating lid members 17 and 18, a handle portion 26 is formed so as to be depressed.
As shown in FIG. 5, seal portions 27 and 27 made of a soft synthetic resin are formed integrally at the upper and lower portions around the frame member 23 by double extrusion molding.

The lower edges of the frame members 23 of the heat insulating lid members 17 and 18 are connected to the breakers 13
The opening of the storage room 12 is closed by placing it on the lower side 13C so as to be detachable. In this case, the upper surfaces of the heat-insulating lid members 17 and 18 are substantially flush with the upper side 13A of the breaker 13, and the heat-insulating lid members 17 and 18 are dropped inside the opening edge of the heat-insulating box 2. Therefore, even when the cooling storage 1 is loaded and transported on the carrier of a delivery vehicle as described above, the vibration during transportation causes the heat-insulating lid member 1 to move.
Even if the parts 7 and 18 slightly bounce, they do not fall off, and the opening can be stably closed.

The frame members 23 on the side surfaces of the heat-insulating lid members 17 and 18 are formed with soft seal portions 27 and 27.
Sealed by close contact of 7, 27. Further, a frame member 23 and a breaker 1 are provided between the heat insulating box 2 and the heat insulating lid members 17 and 18.
3 and is sealed by the soft fins 16, so that it is possible to prevent cold air from leaking from the opening of the storage room 12 as a whole, and to improve the cooling performance.

In particular, since the corners of the paragraph section 14 have a curved shape with a relatively large predetermined curvature as described above, the lower edges of the heat insulating lid members 17 and 18 extend inward along this curved shape. You will be guided. Therefore, the heat insulating lid members 17, 1
Since the sealing member 27 is urged in a direction in which the sealing portions 27 come into close contact with each other, the sealing performance between the heat insulating lid members 17 and 18 is further improved.

A regenerator 28 is installed in the storage room 12 of the heat insulating box 2. The cold storage agent 28 is formed by enclosing a brine having a large specific heat in a resin bag, and has an effect of cooling the surroundings by the latent heat when being melted from a frozen state. The cold storage agent 28 is first stored in a rectangular container-like case 29 opened on one side. This case 2
Numeral 9 is made of a member having a smooth surface (inner surface) such as stainless steel and having good thermal conductivity, and the inner surface of the corner portion has a smoothly curved shape.

Projections 29A, 29A having a curved cross section are formed on the bottom surface of the case 29, which is the widest surface, with a vertical interval of two, and project inward. A flange 29B protruding outward is provided on the periphery of the opening of the case 29.
Is formed. A temperature sensor 32 such as a thermistor is first housed in such a case 29 and disposed between the protrusions 29A. Then, the regenerator 28 is stored from above.

After storing the regenerator 28, the opening of the case 29 is closed with a stainless steel cover 33. This cover 33 has an engagement flange 33 folded inward on both sides.
A, 33A.
The opening is closed by sliding the 3A into engagement with the flange 29B of the case 29. In addition, the lead wire 32A of the temperature sensor 32 is drawn out from the concave groove 29C formed in the flange 29B with which the engaging flanges 33A and 33A are not engaged.

Then, with the case 29 containing the temperature sensor 32 and the regenerator 28 closed with a cover 33,
The cover 33 is brought into close contact with the side surface of the inner box 6, and the flange 29B
At the same time, the case 29 and the cover 33 are fixed to the side of the inner box 6 by screwing the engagement flange 33A to the inner box 6.

As described above, since the case 29 for storing the regenerator 28 is formed of a member having a smooth inner surface with a curved corner, even if the vibration during transportation as described above is applied to the regenerator 28, the bag is not damaged. The inconvenience of rupture can be avoided beforehand.

Further, since the projecting portions 29A, 29A projecting inward with a curved cross section on the widest surface of the case 29 are formed in a bent manner, the cold storage agent 28 freezes and solidifies as described later. The regenerator 28 and the projections 29A, 29A are engaged with each other. Therefore, even if vibration is applied during the transportation as described above, the regenerator 28 does not shift, and can be stably and safely held.

Further, since the temperature sensor 32 is disposed between the projections 29A, 29A, the temperature sensor 32 is
A and 29A are sandwiched between the regenerator 28 and the case 29, so that the temperature sensor 32 can be prevented from being displaced or falling off.

An inner plate 36 is attached to the inside of the case 29 in which the regenerator 28 is housed, with an interval from the case 29. The inner surface plate 36 is made of a heat conductive metal plate such as stainless steel and substantially serves as a side surface of the storage room 12, and its periphery is bent toward the inner box 6. Constitutes a gap.

On the other hand, a handle 4 is provided on the front and rear surfaces of the heat insulating box 2.
1 are respectively attached. The handle 41 is formed of a metal pipe bent in a U-shape, and is held on both sides by holding plates 42, 42 with the U-shape facing downward so as to be vertically movable. In addition, stoppers 43, 43 which can freely move in and out of the holding plates 42, 42 are attached to the heat insulating box 2 inside the central portions of the holding plates 42, 42, respectively.

Guards 44 are provided on the left and right surfaces of the heat insulating box 2.
Are attached. The handle 44 is also formed of a metal pipe bent in a U-shape, and is held on both sides by holding plates 46, 46 with the U-shape facing downward so as to be vertically movable. In addition, stoppers 47, 47 which can freely move into and out of the holding plates 46, 46 are attached to the heat insulating box 2 inside the central portions of the holding plates 46, 46, respectively.

Each handle 41, 41 and guards 44, 4
4 is pressed down as shown in FIGS. 2 and 3, and when most of them are inserted into the holding plates 42, 42, 46, 46, the upper side thereof is higher than the upper surface of the heat insulating box 2 (the upper surface of the breaker 13). It is located below. Then, the stoppers 43, 4
3, or 47, 47 is released, and each of them is protruded above the heat insulating box 2 in a state of being pulled out upward as shown in FIG. Note that this pulled-out state corresponds to the stoppers 43, 4
3, or by returning 47, 47 (projecting into the holding plates 42, 42 or 46, 46).

On the other hand, the lower structure 3 is made of a relatively thick steel plate or the like, and has a rectangular shape with a small vertical dimension as a whole. The lower structure 3 is fixed to the center of the lower surface of the heat-insulating box 2. Therefore, the heat-insulating box 2 projects outward from the lower structure 3, and the lower structure 3 extends inward from the heat-insulating box 2. positioned. Further, a machine room 50 is formed in the lower structure 3, and the machine room 50 is rectangular as shown in FIG. 9 (FIG. 9 is a plan view seen through the heat insulating box 2). Mouth 51, 52, 5
3, 54.

Then, the condensing unit 56 of the cooling device R is inserted into the machine room 50 from the insertion port 53 on the side surface. The condensing unit 56 includes a compressor 58, a condenser 59, and a blower 61 for a condenser mounted on a unit base 57. The condensing unit 56 is inserted through an insertion port 53 and positioned at an angle 62 located at the bottom of the machine room 50. , 62.

In this state, the insertion ports 53 and 54 are closed by panels 64 and 66 having a plurality of slits 63 as shown in FIG. At this time, the edges of the panels 64 and 66 are screwed to both the lower structure 3 and the unit base 57 from the outside, whereby the condensing unit 56
Are fixed to the lower structure 3 via the panels 64 and 66.

As described above, the condensing unit 56 of the cooling device R is simultaneously provided with the panels 64 and 66 and the lower structure 3.
And the fixing operation can be performed outside the side of the lower structure 3, so that a series of mounting workability from insertion of the condensing unit 56 to fixing is significantly improved.

The compressor 58 and the condenser 59 are connected to the evaporating pipe 9 by a refrigerant pipe, and constitute a well-known refrigerant circuit together with a pressure reducing device (not shown).

An electrical box 68 as shown in FIG. 7 is inserted into the machine room 50 from the front insertion slot 51. The control box 68 has a built-in control device (such as a board) inside, and a power supply port 69 to which a plug of a power supply line is detachably connected and an earth leakage breaker 71 are exposed on the front surface. At the front end of the electrical box 68, a mounting flange 72 that protrudes outward is formed.

After the electrical box 68 is inserted into the machine room 50, the mounting flange 72 is screwed to the lower structure 3 from outside. As a result, the space in the machine room 50 can be saved, and the mounting operation of the electrical box 68 can be performed from the outside on the side of the lower structure 3, so that it becomes extremely easy. The lead wire 32A of the temperature sensor 32
Is drawn into the electrical box 68 and connected to the control device.
Further, the insertion port 52 is also closed by the panel 73.

On the other hand, casters 76 are attached to the four lower corners of the heat insulating box 2 outside the lower structure 3. The caster 76 includes a mounting portion 78 having a supporting member 77 rotatably on a horizontal plane at a lower end thereof, and a wheel 81 rotatably mounted on a horizontal rotation shaft 79 at the lower end of the supporting member 77. The mounting portion 78 is rotatably supported by a left-right rotating shaft 83 of a holding member 82 attached to the lower surface of the heat-insulating box 2, and one upper end corner is centered on the rotating shaft 83. It has an arc shape.

Reference numerals 86, 86 denote operating arms. The operation arm 86 is formed in a U-shape as a whole by bending a steel material, and both ends are pivotally supported by shafts 87, 87 at the upper center of the side surface of the lower structure 3 so as to be rotatable.
In each case, it extends along the front and rear of the lower structure 3 below the heat insulating box 2. Elongated holes 88 are formed in the left and right sides of the operation arm 86, and the elongated holes 88 are provided with engagement projections 89 attached to the lower end corners of the mounting portions 78 of the pair of left and right casters 76. Are respectively inserted and engaged, so that the left and right casters 76, 7
6 are interconnected.

Further, stopper pieces 91... Slidable in the front-rear direction are provided on the left and right side front and rear upper parts of the lower structure 3.
Are attached.

The operation of the cooling storage 1 of the present invention having the above configuration will be described. When articles such as fresh food are stored in the storage room 12 on a delivery base (post office or the like), FIG.
As shown in FIG. 3, for example, the operation arms 86 are pulled up, and the stopper pieces 91.
6. Hold to the lower side of 86. In this state, the operation arm 86 is located above the power supply port 69 as shown in FIG.

The casters 76... Are rotated clockwise in FIG. 3, and the rear left and right casters are rotated counterclockwise about the rotation shaft 83, and include wheels 81. The entire caster 76 is stored (submerged) above the lower surface of the lower structure 3. Accordingly, in this state, the lower surface of the lower structure 3 of the cooling storage 1 is installed on the floor surface. In this case, as described above, the condensing unit 5 of the cooling device R
6 and the electrical box 68 are attached from the side, so that the lower surface of the lower structure 3 is flat. Therefore, the installation state of the cooling storage 1 is stable.

In this state, a plug of a power supply line (not shown) is connected to the power supply port 69, and AC power is supplied to the cooling device R. Thus, the compressor 58 and the condenser blower 61 of the cooling device R are operated, and the evaporating pipe 9 exerts a cooling function. As a result, the inside of the storage chamber 12 is cooled to a predetermined temperature, and at the same time, the regenerator 28 in the case 29 is also cooled. The operation of the compressor 58 is controlled by the temperature sensor 32.
Based on the temperature sensing operation, the control device in the electrical component box 68 controls the temperature in the storage room 12 to be a predetermined temperature.

By the cooling operation, the inside of the storage room 12 is cooled to a predetermined temperature, and the regenerator 28 is frozen and solidified. In this state, the articles are stored in the storage room 12, and the heat-insulating lid members 17, 1
8 is placed and the opening is closed.

When loading on a delivery vehicle, first, the plug of the power supply line is removed from the power supply port 69, and the stopper piece 91 is pushed in to lower the front and rear operation arms 86, 86. As a result, the casters 76... Are rotated counterclockwise in FIG. 3 on the front left and right sides, and clockwise on the rear left and right about the rotation shaft 83 in FIG.
.. Protrude below the lower surface of the lower structure 3 as shown in FIGS. The handle 41 is pulled out as described above. In this state, the cooling storage 1 is a caster 76
Are brought into contact with the floor surface, and by pushing with the handle 41, loading and unloading of the cooling storage 1 to and from the delivery vehicle becomes extremely easy.

In this state, the casters 76
The rotating shaft 79 of the wheel 81 is located closer to the shaft 87 than the rotating shaft 83 of the mounting portion 78. Further, the upper surface of the mounting portion 78 comes into contact with the inner surface of the upper end of the holding member 82 and receives the load of the heat insulating box 2, and this load acts to prevent the rotation of the casters 76. Therefore, casters 76
The attachment portion 78 becomes difficult to rotate. For safety, the stopper piece 91 is pulled out again and the operation arms 86, 86
It is needless to say that it is brought into contact with the upper edge and kept in the lowered state.

Further, in this state, the operation arm 86 moves
0, the power supply port 69 can be connected to a plug of a power supply line even when the casters 76 are projected.

After being loaded on the carrier, the operating arms 86 are again pulled up as described above, and the casters 76 are stored (FIGS. 2 and 3). Therefore, the lower surface of the lower structure 3 comes into contact with the carrier of the delivery vehicle, but also in this case, since the lower surface of the lower structure 3 is flat as described above, the stability during transportation is significantly improved. I do.

In the above operation, the pair of left and right casters 76, 76 are simultaneously protruded and retracted by the operation arm 86, so that the operation is extremely easy and the inclination of the cooling storage 1 during the operation is minimized. Can be suppressed.

During transportation, the guard 44 is lifted to prevent other luggage from falling onto the cooling storage 1. During transportation, the storage chamber 12 is kept cool by the latent heat of fusion of the cold storage agent 28. At this time, the inside of the storage chamber 12 receives a cooling action via the inner surface plate 36. In addition, since the inner article does not directly contact the case 29 due to the presence of the inner surface plate 36, the freezing accident due to local cooling is also prevented.

After arriving at the delivery destination, the operator removes the heat-insulating lid member 17 or 18 to open the opening, takes out the article placed on the other, and takes out the article again with the heat-insulating lid member 17 or 18. The closing work is done.

[0060]

As described in detail above, according to the present invention, heat insulation
Attach a heat conductive case to the inside of the box
The cold storage is stored in the cold storage
Can keep the inside of the refrigerator cool with a regenerator,
The case consists of a smooth inner surface with curved corners.
The bag ruptures even if vibration during transportation is applied to the regenerator
Can be avoided beforehand.

The widest surface of the case has a curved cross section.
Since the projection that protrudes inward in a shape is bent,
When the cold storage agent freezes, does the cold storage agent engage with the protrusions?
Us. Therefore, vibration is applied during transportation as described above.
Even if the regenerator does not displace, it is stable
Will be held properly and safely.

Further, the cool storage agent is placed in the bag with a briquette having a large specific heat.
And heat conduction is smooth.
The freezing time is also reduced. Also, the cool storage agent in the bag is strange.
Since it can be shaped, the cold storage agent deforms and freezes as it freezes.
Will adhere to the surface. This allows the cool storage
Cooling of the inside will be performed more smoothly.
You.

According to the second aspect of the present invention,
A plurality of protrusions, and a cable between these protrusions
Temperature sensor in the storage space,
With further improvement, the temperature sensor is stored between the protrusions.
Since the shape to be sandwiched between the cold agent and the case, the temperature
The position sensor can be prevented from being displaced or falling off.
Become so.

Also, since the regenerator is contained in a bag,
It can be easily deformed according to the shape of the sensor. This allows
It also improves the adhesion between the regenerator and the temperature sensor.
You.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cooling storage of the present invention with a caster stored therein.

FIG. 2 is a front view of the cooling storage of the present invention with the casters stored.

FIG. 3 is a side view of the cooling storage of the present invention with the casters stored.

FIG. 4 is a longitudinal sectional view of one side of a heat insulating box of the cooling storage according to the present invention.

FIG. 5 is an enlarged sectional view of a heat insulating lid member of the cooling storage according to the present invention.

FIG. 6 is a perspective view of a case for storing a regenerator in the cooling storage of the present invention.

FIG. 7 is a front view of the heat insulating box and the lower structure of the cooling storage according to the present invention.

FIG. 8 is a side view of the heat insulating box and the lower structure of the cooling storage according to the present invention.

FIG. 9 is a plan view of the lower structure seen through the heat insulating box of the cooling storage of the present invention.

FIG. 10 is a front view of the cooling storage of the present invention with the casters protruding.

FIG. 11 is a side view of the cooling storage of the present invention with the casters protruding.

FIG. 12 shows a state in which a handle and a guard are pulled out.
It is a side view of 1 cooling storage.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooling storage 2 Heat insulation box 12 Storage room 14 Step part 17, 18 Heat insulation lid member 28 Cold storage agent 29 Case 29A Projection part 32 Temperature sensor

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F25D 23/02 301

Claims (2)

(57) [Claims] 1. A cooling method for cooling the interior of a heat insulating box with a regenerator.
In the heat storage, the heat conductive case attached to the inside of the heat insulating box is
Wherein the refrigerant 13A is filled with large consisting brine specific heat bag
While being configured and housed in the case, the case is formed of a smooth inner surface member having a curved corner.
With a curved cross section on the widest surface of the case.
The projection that protrudes inward is bent
A cooling storage. 2. The method according to claim 1, wherein the plurality of protrusions are formed, and
A temperature sensor was placed in the case between the protrusions
2. The cooling storage according to claim 1, wherein: