JP2001153528A - Cold accumulator for cold insulation compartment and cold insulation compartment using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance assembling workability and service workability by making possible to discriminate between a cold accumulating agent for freezing and a cold accumulating agent for refrigeration easily from the appearance. SOLUTION: The cold accumulator comprising cooling tubes 17, 17,... acting as an evaporator in a freezer 13, and cold accumulating agents 27A, 27B for freezing and refrigeration disposed contiguously to the cooling tubes 17, 17,... is further provided with means 33 for discriminating the cold accumulating agent 27A for freezing from the cold accumulating agent 27B for refrigeration so that the cold accumulating agent 27A for freezing can be discriminated from the cold accumulating agent 27B at a glance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cool storage device for use in a cool box which is loaded on a truck or the like and transported, and a cool box using the same.

[0002]

2. Description of the Related Art In general, a cool box loaded and transported on a truck or the like is provided with a cool unit comprising, for example, a refrigerating device and a regenerator cooled and stored by the refrigerating device. It operates only in the storage warehouse of the delivery terminal, does not operate the refrigeration equipment during transportation,
The cold stored in the regenerator cools the luggage stored in the cool box.

[0003] By the way, one cool box has a cool temperature of-
A regenerator having a configuration in which a refrigerating refrigerating agent having a low melting point and a refrigerating regenerator having a high melting point are mixed so that it can be used in a freezing mode of about 18 ° C. or a refrigerating mode of about 3 ° C. It has been done to adopt.

[0004]

As described above, in the case of a regenerator constructed by mixing a refrigerating agent for refrigerating and a refrigerating agent for refrigerating, the operation in the refrigerating mode or the operation in the refrigerating mode is well compatible. For this purpose, it is necessary to optimally design the number ratio between the refrigerating agent and the refrigerating agent.

[0005] Incidentally, since both the refrigerating agent and the refrigerating agent have a structure in which a gel-type regenerating agent is filled in a bag having a four-layer structure, for example, it is difficult to distinguish them from the appearance. There is a problem that it is difficult to read the set number ratio at the time of assembly.

Further, when the refrigerating refrigerating agent or the refrigerating refrigerating agent is damaged, it may be confused when it is difficult to discriminate between freezing and refrigerating when replacing with a new one. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and improves the assembling workability and service workability by allowing the refrigerating refrigerating agent and the refrigerating refrigerating agent to be easily distinguished from the appearance. The purpose is to make

[0008]

According to the first aspect of the present invention, as means for solving the above problems, cooling pipes 17, 17,... Acting as evaporators in the refrigeration system 13, and the cooling pipes 17, 17,. ····································································································· is configured will include the refrigerating regenerative agent 27A and the refrigerating regenerative agent 27B which are arranged adjacent to. .

With the above-described configuration, the identification means 33 makes it possible to confirm at a glance whether the refrigerant is the refrigerating refrigerating agent 27A or the refrigerating refrigerating agent 27B. At the time of assembly, the number ratio becomes as designed. Can be easily inspected, and it can be easily confirmed whether the refrigerating agent 27A or the refrigerating agent 27B when replacing with a new one. That is, workability at the time of assembly and service is improved.

[0010] As in the invention of claim 2, claim 1
In the regenerator for cold storage described above, when the identification means 33 is provided on the surface of the refrigerating agent 27B, the refrigerating agent for freezing 2
When 7A and the cold storage agent 27B are mixed, the identification number 33 may be provided in the cold storage agent 27B whose number is usually limited (for example, 1/2 to 1/3). This is advantageous in terms of workability and cost.

[0011] As in the invention of claim 3, claim 1
3. The regenerator for cold storage according to any one of claims 2 and 3, wherein the refrigerating cold storage agent 27A and the refrigerating cold storage agent 27B.
Are supported by the spacers 26 inserted between the cooling pipes 17, 17,..., The support of the cold storage agents 27A, 27B becomes easy and reliable.

According to a fourth aspect of the present invention, as a means for solving the above-mentioned problems, a cool storage box is provided with the cool storage unit for a cool storage box according to any one of the first, second and third aspects. .

With the above-described structure, the refrigerating regenerator 27A and the refrigerating regenerative agent 27B in the regenerator can be easily distinguished, and workability in assembling the refrigerator and in service is improved. .

[0014]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

This cool box is loaded on a truck or the like and transported. As shown in FIGS. 1 and 2, a cool box body 1 having a heat insulating structure and an opening 4 of the cool box body 1 are provided. It is configured to include a door 2 that opens and closes, and a cooling unit 3 disposed in the cooling box body 1.

The refrigerator compartment body 1 is in the form of a vertically long rectangular parallelepiped box having an opening 4 on the front side for loading and unloading luggage, and has a cooling compartment 5 for storing luggage and a cooling compartment 5.
And a machine room 6 defined above the top plate and covered by a lid cover 7. Reference numeral 8 denotes an air suction port for sucking air into the machine room 6, reference numeral 9 denotes an air outlet for blowing air from the machine room 6, and reference numeral 10 denotes a caster for moving the cool box.

The outer wall of the cool room 5 in the cool box main body 1 has a heat insulating structure in which a heat insulating material is filled between inner and outer plates made of synthetic resin (for example, made of FRP).

The door 2 is adapted to be fitted into the opening 4 of the cool box main body 1 at the time of the closing operation, and the inner and outer plates made of synthetic resin (for example, made of FRP) like the cool box main body 1. It has a heat insulating structure in which a heat insulating material is filled in between. The door 2 is pivotally supported by hinges 11 and 11 on the right side edge of the opening 4 so as to be freely opened and closed. Locking devices 12 for holding the door 2 in a closed state are provided at upper and lower edges of the opening 4 and at upper and lower ends of the door 2.

The refrigerating means 3 comprises a refrigerating device 13 and a regenerator 14 which is cooled and stored by the refrigerating device 13.

The refrigerating device 13 includes a compressor 15 and a condenser 16 disposed in the machine room 6 and the refrigerating room 5.
And a cooling pipe 17 (see FIGS. 3 to 5) to which the liquid refrigerant from the condenser 16 is supplied. Reference numeral 18 denotes a cooling fan for cooling the condenser 16, and 19 denotes a drain pan. The compressor 15, the condenser 16 and the cooling pipe 17 are:
Refrigerant compressed by a compressor 15 is condensed and liquefied by a condenser 16, decompressed by an expansion valve (not shown), and then evaporated by a cooling pipe 17. Cold storage is performed by cooling the regenerator stored in the regenerator 14 by the latent heat. The operation of the refrigeration apparatus 13 is performed only in the storage warehouse at the delivery terminal, and the refrigeration apparatus 13 is not operated during transportation, and the luggage stored in the cool storage box by the cold stored in the regenerator 14 is stored. Is to be kept cool.

On the outer wall of the cold storage room 5 of the cold storage main body 1, there are formed reinforcing projections 20, 20, 20 which are vertically divided into three stages and are continuous from both side surfaces to the back surface.

The door 2 also has reinforcing projections 21, 21, 21 connected to the reinforcing projections 20, 20, 20 on the side of the cool box main body 1, respectively.

Further, of the reinforcing projections 20, 20, 20 on the side of the cold storage main body 1, the reinforcing projection 2 located at the middle stage is provided.
In FIG. 0, grips 22 to be gripped when the cool box is moved are provided at the corners of the corners of the opening 4 and the corners of the back side of the cool box body 1 respectively. Have been.

In the present embodiment, the outer wall and the door 2 of the cool box main body 1 are provided with an upper reinforcing projection 2.
Buffer rubbers 23, 24 protruding outward from the reinforcing projections 20, 21 are attached adjacent to the lower sides of the reinforcing projections 20, 21 and the lower reinforcing projections 20, 21.

As shown in FIGS. 3 to 5, the regenerators 14 are arranged in parallel in a large number (that is, a number of rows of cooling pipes D, D,... Line),
Cooling pipe 17, through which the refrigerant flows to act as an evaporator,
, And four upper and lower two pipes of the four cooling pipes 17 constituting each cooling pipe row D.
One end of the book is a hairpin 17a, 17b. On the other hand, four cooling pipes 17 constituting each cooling pipe row D,
The other two ends located in the middle of 17.
The other ends of the uppermost cooling pipe 17 and the lowermost cooling pipe 17 of adjacent cooling pipe rows D, D connected by a U-shaped connection pipe 17c are connected to the connection pipe 17b. It is connected by a U-shaped connecting pipe 17d that curves outside. Reference numerals 17e and 17f are a refrigerant inlet and a refrigerant outlet to which a refrigerant inlet tube and a refrigerant outlet tube (not shown) are connected.

.. Of the cooling pipes 17, 17... On the hairpin portions 17a, 17b side, an intermediate portion, and the cooling pipe 1
The refrigerant inlet / outlet portions 17e and 17f (in other words, the ends where the connection pipes 17c and 17d and the refrigerant inlet pipe and the refrigerant outlet pipe are connected) at 7, 17,...
5 supported.

As shown in FIGS. 3 and 4, the regenerator 14 includes spacers 26, 26,... Disposed between the cooling pipe rows D, D,. A refrigerating agent in a bag (a refrigerating refrigerating agent 27A having a low melting point and a refrigerating regenerator 27B having a high melting point) sandwiched between the pipe rows D is provided. Each of the spacers 26
It has a substantially hat-shaped cross section that widens from the upper end to the lower end, and has openings 28, 28,.
Are formed. Further, on both sides of the lower end of the spacer 26, cold storage agent receiving portions 29 having an L-shaped cross section for supporting the lower ends of the inserted cold storage agents 27A and 27B are integrally provided. With this configuration, the cold storage agents 27A and 27B
Are brought into close contact with the cooling pipes 17, 17,..., And the cold storage agents 27A, 27B are efficiently cooled by the cooling pipe 17 during cold storage. Moreover, the regenerator 27A, 2
7B shows the cooling pipe 17 and the spacer 26 in an almost exposed state.
Therefore, it is in good contact with the air in the cold storage room 5 at the time of cooling, and the cooling performance is also improved.

As shown in FIG. 4, openings 30, 30,... Through which the cooling pipes 17, 17,.
Are formed at the longitudinal edges of the openings 30, 30... And at both longitudinal ends of the tube sheet 25A.
1, 31 ... are integrally provided. Each of the cut-and-raised pieces 31 is provided with cooling pipe supports 32, 32,... Made of synthetic resin for supporting the cooling pipes 17, 17,. Each of the cooling pipe supports 32 is formed of a synthetic resin integrally formed from an attachment portion 32a attached to the cut-and-raised piece 31 and a holding portion 32b for holding the cooling pipe 17. The cooling pipe 17 is sandwiched between the holding portions 32b in
To be supported in a fixed state. Therefore, the cooling pipe 17 is not damaged or detached by the vibration. By the formation of the openings 30, 30,..., The weight of the tube sheet 25A is greatly reduced.

As described above, the regenerator 14A has a low melting point (melting point = -25.degree. C.).
.. And the high-melting point (melting point = −5 ° C.) refrigerating regenerators 27B, 27B,... Are arranged in a mixed manner, but as shown in FIG. On the outermost side opposed to both wall surfaces 1a, 1a of the cold storage main body 1 at
The refrigerating cool storage agents 27A are arranged.

Further, in the regenerator 14, the number of the number M ₁ and refrigerating cold accumulating agent 27A for refrigerating the refrigerant 13A 27B M ₂
The ratio M ₁ / M ₂ and is in the range of 1 / 3-1 / 2 desirable. If M ₁ / M ₂ is smaller than _１ ／, the refrigerating agent 27B is insufficient, and it is not possible to secure the cooling in the refrigeration mode. If M ₁ / M ₂ is larger than _１ ／, the refrigeration agent is not used. Insufficient cold storage agent 27A makes it impossible to secure cold storage in the freezing mode.

In this embodiment, the refrigerating regenerator 2
An identification means 33 for identifying 7A and the cold storage agent 27B is provided on the surface of the cold storage agent 27B. As shown in FIG. 6, the identification means 33 is a red band-shaped mark written on the surface of the bag 34 of the refrigerating agent 27B with an oil-based pen or the like. Reference numeral 35 denotes a gel-like regenerator. In this way, when the regenerator 14 is assembled, the refrigerating refrigerant 2
Whether or not the arrangement of 7A and the cold storage agent 27B is correctly performed can be visually confirmed from the outside, and
At the time of service, it is possible to visually confirm which of the refrigerating cold storage agent 27A and the refrigerating cold storage agent 27B has been replaced. In addition, since the identification mark 33 is attached to a small number of the cold storage agents 27B for refrigeration, it is advantageous in terms of workability and cost.

In the present embodiment, the identification means 33 is provided on the refrigerating agent 27B, but may be provided on the refrigerating agent 27A or on both. In addition to the mark as in the present embodiment, the identification unit 33 may change the shape of a container (for example, a bag) or change the color of the container in some cases.

[0033]

According to the first aspect of the present invention, the refrigeration system 13
Pipes 17 acting as evaporators in the
, And a refrigerating regenerative agent 27A and a refrigerating regenerative agent 27B arranged adjacent to the cooling pipes 17, 17,..., And distinguish between the refrigerating regenerative agent 27A and the refrigerating regenerative agent 27B. The identification means 33 is provided so that the identification means 33 can confirm at a glance whether it is the refrigerating cold storage agent 27A or the refrigerating cold storage agent 27B. Can be easily inspected, and even when replaced with a new one, it can be easily confirmed whether the refrigerant is the refrigerating agent 27A or the refrigerating agent 27B, and the workability during assembly and service is improved. There is.

As in the invention of claim 2, claim 1
In the regenerator for cold storage described above, when the identification means 33 is provided on the surface of the refrigerating agent 27B, the refrigerating agent for refrigerating 2
When 7A and the cold storage agent 27B are mixed, the identification number 33 is attached to the cold storage agent 27B whose number is usually limited (for example, ２〜 to １ ／).
This is advantageous in terms of workability and cost.

As in the invention of claim 3, claim 1
3. The regenerator for cold storage according to any one of claims 2 and 3, wherein the refrigerating cold storage agent 27A and the refrigerating cold storage agent 27B.
Are supported by the spacers 26 inserted between the cooling pipes 17, 17,..., The support of the cold storage agents 27A, 27B becomes easy and reliable.

According to the fourth aspect of the present invention, the first aspect,
A cold storage device comprising the cold storage device according to any one of items 2 and 3, and a refrigerating agent 27 for freezing in the cold storage device.
Since A and the cold storage agent 27B can be easily distinguished from each other, there is an effect that workability at the time of assembling and service of the cool box is improved.

[Brief description of the drawings]

FIG. 1 is a side view of a cool box according to an embodiment of the present invention.

FIG. 2 is a front view of the cool box according to the embodiment of the present invention.

FIG. 3 is a side view of the regenerator in the cool box according to the embodiment of the present invention.

FIG. 4 is an enlarged sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a partial bottom view of the regenerator used in the cool box according to the embodiment of the present invention, in which spacers are omitted.

FIG. 6 is an enlarged perspective view of a refrigerating regenerator in the regenerator used in the cool box according to the embodiment of the present invention.

[Explanation of symbols]

1 is a cool box main body, 2 is a door, 13 is a refrigerating device, 14 is a regenerator, 26 is a spacer, 27A is a refrigerating cold storage agent, 27B is a refrigerating cold storage agent, and 33 is an identification means.

Continued on the front page F term (reference) 3L044 AA04 BA02 CA11 DC03 DD07 KA04 3L045 AA04 BA02 BA03 BA10 CA02 CA03 DA02 DA05 GA07 HA01 KA06 PA04

Claims (4)

[Claims] 1. A cooling pipe (17) serving as an evaporator in a refrigerating device (13), and a refrigeration unit arranged adjacent to the cooling pipes (17), (17). And a refrigerating agent (27A) and a refrigerating agent (27B).
A regenerator for a cold storage, comprising an identification means (33) for distinguishing between A) and a refrigerating agent (27B). 2. The method according to claim 1, wherein the identification means is provided on a surface of a cold storage agent for cooling.
A regenerator for the cold storage described. 3. The cooling pipes (17), (17), wherein the refrigerating regenerator (27A) and the refrigerating regenerator (27B) are supplied to the cooling pipes (17), (17).
3. A regenerator for a cool storage according to claim 1, wherein the regenerator is supported by a spacer (26) inserted therebetween. 4. A cool box comprising the cool storage device according to any one of claims 1, 2 and 3.