JP3199434B2 - Constant temperature and high humidity 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 refrigerator with a constant temperature and high humidity, which is required to have a constant temperature and high humidity.

[0002]

2. Description of the Related Art In recent years, from the viewpoint of maintaining freshness in food preservation, freshness preservation techniques include refrigerated storage, frozen preservation partial storage,
Furthermore, constant temperature and high humidity storage and various other technologies have been put to practical use. Among these technologies, a constant-temperature and high-humidity chamber forms a cool air circulation duct by enclosing a duct on five sides, up, down, left, right, and rear, excluding the front face, to increase the humidity inside the chamber. . (For example, JP-A-3-1073).

Hereinafter, the above-mentioned conventional constant temperature and high humidity chamber will be described with reference to the drawings. 3 to 6 show a conventional constant temperature and high humidity chamber. In the drawing, reference numeral 1 denotes a main body of a constant temperature and high humidity chamber, and the main body 1 is composed of an outer box 2, an inner box 3, and a heat insulating material 4, and a front surface of the main body 1 has an opening 5 for storing and taking out foods and the like. The opening 5 is provided with a rotatable heat insulating door 6 which can be opened and closed. The lower surface of the main body 1 is provided with four legs 7 for supporting the main body 1. And
A machine room 8 for a refrigerating device is formed in an upper portion of the main body 1. An opening 9 is provided on the upper surface of the main body 1, and a heat insulating panel 10 covering the opening 9 is provided. A condenser 11, a blower 12, and a leeward side of the blower 12 are provided above the heat insulating panel 10. A compressor 13 is provided, a blower 14 for suction is provided on a lower side, an evaporator 15 is provided on a leeward side of the blower 14, and a drain pan 16 that covers the evaporator 15 is provided therebelow.

[0004] Reference numeral 17 denotes an interior box made of a heat conductor which also serves as a duct component.
1.

[0005] The interior box 17 is sealed by providing a certain space 22A between itself and the inner box 3 so as to completely seal the cool air sent by the blower 14. The partition between the inner box 3 and the side plates 20A and 20B, and between the drain pan 16 and the upper plate 18 are separated by partition plates 23A, 23B and 23C for guiding the flow of cool air in a certain direction.

Reference numeral 24 denotes a storage inside the interior box 17.
Reference numeral 25 denotes a fan for stirring in the refrigerator, which is provided between a fan mounting plate 27 having openings 26A and 26B on the leeward and leeward sides, respectively, and the upper plate 18. The fan mounting plate 27 is fixedly attached to the upper plate 18.
Reference numeral 28 denotes a shelf on which food (not shown) is placed.

The operation of the constant temperature / high humidity chamber configured as described above will be described below, focusing on the flow of cold air.

While the cool air (open arrows in the drawing) passing through the blower 14 and the evaporator 15 is lowered, the upper plate 18, the partition plates 23A, 23B and 23C, the side plates 20A and 20B, the rear plate 19, and the lower plate The air flows in the space 22A between the inner box 17 and the inner box 3 partitioned by 21, and the side plates 20A, 20A
B, a cycle that flows toward the space 22B surrounded by the inner box 3 and the partition plates 23A and 23B and returns to the blower 14 is formed. At this time, since the cool air is completely shut off from the inside 24, no cool air flows into the inside 24. Therefore 24
Is cooled by the interior box 17, so that the interior 24 is kept in a high humidity cooling state.

On the other hand, in order to reduce the cooling temperature difference between the upper and lower portions of the interior 24 and to increase the effect of heat conduction from the interior box 17, the opening portion 26 is formed by the interior stirring fan 25.
Opening air 2 (solid arrow in the figure) sucked from A
Food discharged from 6B and placed on shelf 28 (not shown)
Is allowed to cool.

[0010]

However, in the above configuration, even if the cool air discharged from the blower 14 flows into the space 22A between the rear plate 19 and the inner box 3, the partition plates 23A, 23B Since the cool air which is the return air from the lower plate 21 side is heat-exchanged, the temperature becomes higher and returns to the blower 14, so that the surface temperature of the interior box 17 varies depending on the location and the internal temperature ( Humidity).

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned conventional problems, and it is an object of the present invention to quickly recover the returning cool air discharged from a blower and to reduce the fluctuation of the temperature of the surface of the interior box.

[0012]

In order to achieve the above object, a constant temperature and high humidity chamber according to the present invention comprises a heat insulating material between an outer box and an inner box.
It consists of a box-shaped main body having an upper plate, a rear plate, both side plates, and a lower plate.
And the top, back, both sides, and bottom of the inner box of the body
Interior box provided at a predetermined distance from each of the surfaces
And disposed in a cooling chamber formed above the interior box.
The blower and the evaporator, and the cool air in the cooling chamber, first,
Flowing downward between the rear plate of the inner box and the back of the inner box,
Next, at the rear of both side plates of the interior box and on both sides of the inner box
With the part facing the rear part of both side plates of the interior box body
Flows upward, and then in the front-rear direction of both side plates of the interior box body
Both sides of the inner box at the center and both sides of the inner box
Flow downward between the plate and the part facing the center in the front-rear direction.
Then, the front of both side plates of the interior box and both sides of the inner box
Of the interior box facing the front portions of both side plates of the interior box
So that it flows upwards and returns to the cooling chamber.
A plurality of partition plates for partitioning a space between a body and the interior box body
And the front of both side plates of the interior box and both sides of the inner box
Of the interior box facing the front of both side plates and the front
The space formed by the partition plate and the side plate of the interior box
Partition into the space on the side and the space on the side of the inner box,
Both the central part in the front-rear direction of both side plates of the inner box and the inner box
At the center in the front-rear direction of both side plates of the interior box on the side surface
The cool air that has flowed downward between the opposing parts is
A suction using only the space on the side plate side of the interior box for the returning air path
And a built-in duct .

[0013]

In the constant temperature and high humidity chamber of the present invention, the partition plate is
To increase the length of the air path through which cold air flows to cool the interior box
By narrowing, the cool air is smooth without stagnation in the wind path
Heat exchanges with the interior box while flowing quickly,
The area of contact with the interior box is
Because it was narrow while securing, by heat exchange with the interior box body
The returning cold air whose temperature has risen is smooth and smooth without stagnation.
Return to the cooling room and exchange heat efficiently with the inner box.
Can quickly recover high-temperature cold air,
Has the effect of reducing variations in surface temperature
You.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a constant temperature and high humidity chamber according to an embodiment of the present invention. The same components as those of the conventional example are denoted by the same reference numerals, and detailed description is omitted.

1 and 2, the inner box 3 and the side plate 20
A, 20B, between the drain pan 16 and the upper plate 18, and between the inner box 3 and the lower plate 21, partition plates 23A, 23B, 23C, 23D, 23 for guiding the flow of cold air in a certain direction.
E, 23F. 29A and 29B are suction ducts for guiding the inflowing cool air to the blower 14. The opening cross-sectional area of the space 22B is reduced to half or less, and openings 30A and 30B are provided at the bottom and the top, respectively. 41 is a guide, which is provided in the opening 30A and guides the returning cold air to flow into the suction ducts 29A, 29B. The suction ducts 29A and 29B have their longitudinal surfaces in close contact with the side plates 20A and 20B of the interior box 17. The suction ducts 29A and 29B and the side plates 20A and 20B are in close contact with a partition wall 31.

Reference numeral 40 denotes a side plate 20 of the interior box 17.
A and 20B are contact portions that contact the inner box 3.

The operation of the constant temperature / high humidity chamber constructed as described above will be described below. Blower 14, evaporator 1
The cool air flowing through 5 (open arrow in the figure) is
Partition plates 23A, 23B, 23C, 23D, 23E, 23
F, from the space 22A to the space 22B between the inner box 3 and the inner box 3 partitioned by the side plates 20A, 20B and the lower plate 21.
It flows while sequentially exchanging heat in the air passage communicating with the air. And
The cool air forms a cycle in which the wind speed increases from the opening 30A of the suction duct 29A, 29B and returns to the blower 14 through the opening 30B.

Since the opening cross-sectional areas of the openings 29A and 29B are smaller than the cross-sectional area of the space 22B, it is necessary to increase the flow rate of the return cool air as compared with the case where the entire space 22B is used as the return cool air path. Can be.

At this time, the inside of the suction ducts 29A and 29B
Although the pressure is lower than that of the atmosphere, the suction duct 2 in the space 22B
The space other than 9A and 29B is closed at the top (not shown), so that the pressure becomes higher than that of the suction ducts 29A and 29B and the atmosphere.

The constant temperature and high humidity chamber of the present embodiment comprises an outer box 2 and an inner box.
3, a box-shaped main body 1 having a foamed heat insulating material 4 therebetween, and an upper plate
18, a rear plate 19, both side plates 20A and 20B, and a lower plate 21.
Of the top, back, both sides and bottom of the inner box 3 of the main body 1.
Interior box 17 provided at a predetermined interval from each other
And a cooling chamber formed above the interior box 17.
First, the blower 14 and the evaporator 15 and the cool air in the cooling chamber
The space between the rear plate 19 of the inner box 17 and the back of the inner box 3
Flow, and then the rear portions of both side plates 20A, 20B of the interior box 17
And both side plates 20 of the inner box 17 on both sides of the inner box 3
A, 20B flows upward between the part facing the rear part,
Next, in the front-rear direction of both side plates 20A and 20B of the interior box 17
Both side plates 2 of the interior box 17 at the center and both sides of the inner box 3
0A, 20B between the part facing the center in the front-rear direction
It flows downward, and then both side plates 20A, 20B of the interior box 17
Of the interior box 17 at the front of the inner box 3 and at both sides of the inner box 3
20A and 20B flow upward between the portion facing the front portion.
Between the main body 1 and the interior box 17 so as to return to the cooling chamber
Partitions 23A, 23B, 23C,
23D, 23E, 23F and both side plates 20 of the interior box 17
A, interior box 1 on both sides of front part of 20B and inner box 3
7 and the part opposite to the front part of both side plates 20A and 20B
Space 22B formed by plates 23A, 23B and 23C
To the space on the side plates 20A, 20B side of the interior box 17 and the inner box.
3 and the space on the side of the interior box 17
Central portions in the front-rear direction of the side plates 20A and 20B and both side surfaces of the inner box 3
Front and rear of both side plates 20A, 20B of the interior box 17 at
The cold air that has flowed downward between the part facing the
The side plate 20A, 20B side of the interior box 17 in the air path to return to the room
And suction ducts 29A and 29B that use only
And partition plates 23A, 23B, 23C, 23
D, 23E, 23F are increased and the interior box 17 is cooled.
By making the wind path through which cold air flows long and narrow,
Interior box 1 flowing smoothly and fast without stagnation on the road
7 and heat exchange with suction ducts 29A and 29B.
The air passage returning to the cooling chamber is secured with a contact area with the interior box 17.
The heat exchange with the interior box 17
The returning cold air that has increased in degree is smoothly and quickly without stagnation
Returning to the cooling chamber, the side plates 20A, 20B of the interior box 17 are returned.
Can efficiently exchange heat with high-speed cold air.
And can reduce the variation of the surface temperature of the interior box 17
I can do it.

Further, the side plates 20A, 20B of the interior box 17 are provided.
Are in contact with the sides of the inner box 3 at the front end portions of the side plates 20A and 20B.
Abutting portion 40 which is formed by suction duct 29
A, on the space side on the side of the inner box 3 partitioned by 29B
Since it is located, outside air flows from the contact portion 40 to the main body 1 and the interior box.
17 can be suppressed from entering the cold air path .

[0022]

As described above, the constant temperature and high humidity chamber of the present invention
Is a box-shaped main body having a heat insulating material between the outer box and the inner box,
It is composed of an upper plate, a rear plate, both side plates, and a lower plate.
Between the top, back, both sides, and bottom of the inner box and a specified distance
An interior box provided at an interval, and above the interior box
A blower and an evaporator arranged in a cooling chamber formed in
First, the cool air in the cooling chamber is first illuminated by the rear plate of the interior box and the inside of the interior box.
Flows downward between the back of the box and then on both sides of the interior box
Both the rear part of the plate and the inner box body on both sides of the inner box
It flows upward between the part facing the rear part of the side plate, and then
The center in the front-rear direction of both side plates of the inner box and both sides of the inner box
To the center in the front-rear direction of both side plates of the interior box body
Flows downward between the facing parts, and then
Of the inner box at the front of the side plate and on both sides of the inner box
It flows upward between the part facing the front part of both side plates and
To return to the cooling chamber, between the main body and the interior box
A plurality of partition plates for partitioning the space,
Both side plates of the interior box at the front and both sides of the inner box
Space formed by the portion facing the front of the partition and the partition plate
The space between the side plate of the interior box and the side of the inner box.
And the front and rear sides of the inner box.
Direction of the inner box at the center and on both sides of the inner box
Lower the gap between the parts facing the center in the front-rear direction of both side plates
The side of the interior box near the air path for returning the flowing cool air to the cooling chamber
Suction duct that uses only the space on the plate side
This allows the cool air to flow smoothly and quickly without stagnation
While exchanging heat with the interior box, heat exchange with the interior box
The returning cold air, whose temperature has risen due to
Quickly return to the cooling chamber and efficiently with the side plate of the interior box
Heat can be exchanged and high-temperature cold air can be recovered quickly
Thus, variations in the surface temperature of the interior box can be reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a constant temperature and high humidity chamber according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the constant temperature and high humidity chamber shown in FIG.

FIG. 3 is a front view of a conventional constant temperature and high humidity chamber.

FIG. 4 is a perspective view of the constant temperature and high humidity chamber shown in FIG. 3;

FIG. 5 is a longitudinal sectional view of the constant temperature and high humidity chamber shown in FIG. 3;

FIG. 6 is a cross-sectional view of the constant temperature and high humidity chamber shown in FIG.

[Explanation of symbols]

2 outer box 3 inner box 4 foam insulation material 10 heat insulation panel 14 blower 15 evaporator 16 drain pan 17 interior box 18 upper plate 19 rear plate 20A, 20B side plate 21 lower plate 22A space 22B space 23A, 23B, 23C, 23D , 23E, 23F Partition plate 29A, 29B Suction duct 30A, 30B Opening 31 Partition wall

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-264159 (JP, A) JP-A-5-99552 (JP, A) JP-A-4-214167 (JP, A) 90873 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F25D 17/08 311

Claims (2)

(57) [Claims] 1. A box shape having a heat insulating material between an outer box and an inner box.
And a top plate, a rear plate, both side plates, and a bottom plate.
Between the top, back, both sides, and bottom of the inner box and a specified distance
An interior box provided at a distance, and a blower disposed in a cooling chamber formed above the interior box.
Machine and evaporator, the cold air of the cooling chamber, first, the rear plate of the interior box and the
It flows downward between the back of the inner box and then both
Of the inner box at the rear of the side plate and on both sides of the inner box
It flows upward between the parts facing the rear of both side plates, and then
Both the central part in the front-rear direction of both side plates of the inner box and the inner box
At the center in the front-rear direction of both side plates of the interior box on the side surface
It flows downward between the opposing parts, and then the inner box
The interior box at the front of both side plates and at both sides of the inner box
Flows upward between the parts facing the front of both side plates
Between the main body and the interior box so as to return to the cooling chamber.
A plurality of partition plates for partitioning the space, and a front portion of both side plates of the interior box body and both side surfaces of the inner box.
Parts facing the front portions of both side plates of the interior box
The space formed by the cutting plate and the side plate side of the interior box body
While partitioning into a space and a space on the side of the inner box,
The central part in the front-rear direction of both side plates of the inner box and both side surfaces of the inner box
At the center in the front-rear direction of both side plates of the interior box at
The cold air that has flowed downward between the part to be cooled is returned to the cooling chamber.
Suction fan using only the space on the side plate side of the interior box in the air path
A constant temperature and high humidity chamber consisting of 2. A side plate of the interior box is a front end of the side plate.
Has a contact portion that contacts the side surface of the inner box, and the contact portion suctions
Positioned on the space side on the side of the inner box separated by a duct
The constant temperature and high humidity chamber according to claim 1, which is placed .