JPH0552461A - High humidity box - Google Patents

Abstract

PURPOSE:To obtain a high humidity box in which chilled gas is uniformly fed in an inner box and along the surface of a partition wall, the temperatures of upper and lower chambers are made uniform, dew adhered to the lower partition plate of the wall is discharged to the back surface of the box and the dew is not dropped on preserved food in the box partitioned into two chambers. CONSTITUTION:The opening area of a first chilled gas suction port 33 protruding from an interior box 14 is reduced smaller than that of a second chilled gas suction port 34 protruding from the lower part of an inner box 10B. A wind direction plate 35 for discharging chilled gas to a second space 23 is provided in the box 10B. A spontaneous convection discharge port 37 and a spontaneous convection suction port 38 protrude from a partition wall 39 for partitioning to an upper chamber 21 and a lower chamber 22, and the lower partition plate 39A of the wall 39 is inclined with respect to the box 10B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high humidity chamber for keeping foods in a humid condition.

[0002]

2. Description of the Related Art In recent years, various types of high humidity chambers have been proposed which prevent the food from drying and keep it fresh, using a cooling cycle of a multi-faced cooling system (for example, Japanese Utility Model Laid-Open No. 63-120071).

A conventional high humidity chamber will be described below with reference to FIGS. 4, 5, and 6. Reference numeral 1 is a main body of a high-humidity chamber, and the main body 1 is configured by a heat insulating box 3 having a plurality of doors 2A and 2B each made of a heat insulating material in a front opening, and a heat insulating wall 5 for installing a cooling unit 4. Insulation wall 5 on top of
A machine room 9 for accommodating and installing the compressor 6, the condenser fan 7, and the condenser 8 is formed therein.

Reference numeral 10 is a heat insulating wall formed by an outer box 10A, an inner box 10B made of synthetic resin or metal, and a heat insulating material 10C filled between the two boxes 10A and 10B.

Reference numeral 11 denotes an evaporator, which is provided between the drain pan 12 for receiving dew and the heat insulating wall 5, and is provided for the evaporator fan 1.
It is installed side by side so as to send cold air at 3.

Reference numeral 14 denotes an interior box body made of a good heat conductor which also serves as a duct component, and comprises an upper upper plate 15, a rear back plate 16, side plates 17A and 17B on both sides, and a lower plate plate 18. Has been done.

The inner box 14 is sealed with a constant air portion (first space portion) 19 provided between the inner box 14 and the inner box 10B so as to completely shut off the cool air sent by the evaporator fan 13. ing. Reference numeral 20 denotes a partition wall having a second space 23 composed of an upper partition plate 20A, a lower partition plate 20B, and a side partition plate 20C which are parallel to each other and partition the upper chamber 21 and the lower chamber 22 from each other. The side partition plate 20C has a square hole 25 facing the cold air discharge port 24 projecting from the back plate 16, and the back plate 16 and the side plates 17A, 1A of the inner box body 14 are provided.
It is attached closely to 7B. 26 is a partition wall 20
And a first duct for communicating with a later-described first cold air suction port. Reference numeral 27 denotes a cool air suction duct, which is embedded in the heat insulating box 3. Reference numeral 28 denotes a first cold air suction port, which is provided on the side plates 17A and 17B of the interior box body 14 so as to face both side surfaces of the partition wall 20.

Reference numeral 29 denotes a second cold air suction port, which is provided so as to face the cold air suction duct 26 and project from a lower portion of a side surface of the inner box 10B. Here, the first cold air suction port 28 and the second cold air suction port 29 have the same opening area. Reference numeral 30 denotes an evaporator cold air suction port, which is provided so as to be opposed to the cold air suction duct 27 and project from an upper portion of a side surface of the inner box 10B. Reference numeral 31 is a partition plate for separating the discharged cool air and the sucked cool air. Reference numeral 32 is a shelf for placing food.

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

The cool air (arrow in the figure) passing through the evaporator fan 13 and the evaporator 11 passes through the back plate 16 of the inner box 14 and the first space portion 19 formed by the inner box 10B, and a part of the cool air is separated by the partition wall. Two
The second space 23 in 0, the first cold air suction port 28, and the cold air suction duct 27 flow to form a cycle of returning to the evaporator fan 13. In addition, other cold air is generated by the lower plate 18 of the inner box body 14.
And the second cold air suction port 29 and the cold air suction duct 27 through the first space portion 19 formed by the inner box 10B to form a cycle for returning to the evaporator fan 13.

On the other hand, the side plates 17A, 18A of the inner box body 14
Part of the cool air flows through the first space portion 19 formed by the inner box 10B and the first cool air suction port 28 and the cool air suction duct 27 to form a cycle of returning to the evaporator fan 13. The other cold air flows through the second cold air suction port 29 and the cold air suction duct 27 to form a cycle of returning to the evaporator fan 13.

At this time, since the cold air is completely cut off from the upper chamber 21 and the lower chamber 22, the cold air does not flow into the upper chamber 21 and the lower chamber 22. Therefore, the upper chamber 21 and the lower chamber 22 are cooled by the internal box body 14, so that the upper chamber 21 and the lower chamber 22 are kept in the high humidity cooling state.

[0013]

However, in the above structure, the cool air discharged from the evaporator fan 13 is lower than the lower space 18 and the inner space 10B from the first space 19 on the side of the interior box 14 and the back plate 16. It is difficult for cold air to flow to the second space portion 23 formed by the partition wall 20 even if it flows into the first space portion 16 formed by 1. Had a problem that the temperature was high and the temperature (humidity) in the refrigerator fluctuated.

Also, from the second space portion 23 to the evaporator fan 1
Since the duct distance to 3 is short, the pressure loss in the duct is small, the flow of cool air in the second space portion 23 becomes faster, and the upper chamber 21 has a temperature lower than that of the lower chamber 22. It was

Further, since the temperature of the discharged cool air is low on the upstream side and the heat is exchanged on the downstream side, the temperature is high and the temperature (humidity) in the refrigerator fluctuates.
The two high humidity chambers, which are divided into 1 and the lower chamber 22, have a problem that they remarkably change.

Further, since cold air flows in the second space 23 of the partition wall 20, a large amount of dew adheres to the surface of the lower partition plate 20B of the partition wall 20, but the lower partition plate 20 is formed horizontally. Therefore, there is also a problem that this dew drops onto the food stored in the lower chamber 21.

The present invention solves the above-mentioned conventional problems. The cool air discharged from the evaporator fan is appropriately diverted to the second space portion of the partition wall to uniformly distribute the cool air to the surfaces of the inner box and the partition wall. The primary purpose is to run along.

The second purpose is to make the temperatures of the upper chamber and the lower chamber uniform. The third purpose is to discharge the dew attached to the lower partition plate of the partition wall to the back surface of the inner box.

[0019]

In order to achieve the first object, the high humidity cabinet of the present invention has an opening area of a first cold air suction port projecting from both side surfaces of an interior box body facing a partition wall. The opening area is made smaller than the opening area of the second cold air suction port projecting from the interior box body.

In order to achieve the second object, the partition wall is provided with a natural convection discharge port and a natural convection suction port that connect the upper chamber and the lower chamber.

Further, in order to achieve the third object, the lower partition plate of the partition wall facing the lower chamber is provided with a partition wall inclined downward with respect to the back plate of the inner box body.

[0022]

The present invention is capable of generating a uniform flow of cool air in the first space portion and the second space portion in the interior box body and the partition wall by the above-mentioned structure.

Further, the temperature (humidity) of the upper chamber and the lower chamber can be made uniform. Further, the dew attached to the lower partition plate of the partition wall can be discharged to the back surface of the inner box.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. For the same configuration as the conventional example,
The same reference numerals are given and detailed description is omitted.

In FIGS. 1, 2 and 3, reference numeral 33 is a first cold air suction port, which faces both side surfaces of the partition wall 20 and which is the interior box body 1.
The four side plates 17A and 17B are projected.

Reference numeral 34 is a second cold air suction port, which is provided so as to face the cold air suction duct 27 and project from the lower portion of the side surface of the inner box 10B. Here, the suction opening area of the first cold air suction port 33 is sufficiently smaller than that of the second cold air suction port 34. 35
Is a cold air suction duct, which is formed in an octagonal shape corresponding to the long diameter dimension of the openings of the first cold air suction duct 33 and the second cold air suction duct 34.

The operation of the high humidity chamber constructed as above will be described below. The cool air (arrow in the figure) flowing through the evaporator fan 13 and the evaporator 11 passes through the back plate 16 of the inner box 14 and the first space portion 19 formed by the inner box 10B, and a part of the cool air is separated by the partition wall. The second space portion 23 in 20 and the first
It forms a cycle in which the air flows through the cold air suction port 33 and the cold air suction duct 34 and returns to the evaporator fan 13. Further, other cold air flows through the lower plate 18 of the inner box 14 and the first space 19 formed by the inner box 10B to the second cold air suction port 34 and the cold air suction duct 27, and returns to the evaporator fan 13. Form a cycle.

On the other hand, the side plates 17A, 18A of the inner box body 14
Then, a part of the cool air passes through the first space portion 19 formed by the inner box 10B and forms a cycle in which the first cool air suction port 33, the cool air suction duct 35 and the flow evaporator fan 13 are returned. The other cool air flows through the second cool air suction port 34 and the cool air suction duct 35 to form a cycle of returning to the evaporator fan 13.

According to this embodiment, the suction opening area of the first cold air suction port 33 is made sufficiently smaller than that of the second cold air suction port, so that the pressure loss in the duct is made uniform, and
The uniform flow to the cold air suction port 33 and the second cold air suction port 34 can be achieved.

Next, the high humidity chamber in the second embodiment will be described with reference to FIGS. 1 to 3. The same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

Reference numeral 36 denotes an L-shaped wind vane which is used for the inner box 14
It is attached to the inner box 10B facing the cold air discharge port 24 projecting on the back surface.

The operation of the high humidity chamber constructed as described above forms a cold air circulation cycle similar to that of the first embodiment.

According to this embodiment, the wind direction plate 36 allows the first
A uniform flow of cold air can be achieved in the space 19 and the second space 23.

Next, a high humidity chamber in the third embodiment will be described with reference to FIGS. 1 to 3. The same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

Reference numeral 37 denotes a natural convection discharge port, which is provided on the inner surface of the partition wall 20 so as to project from the upper chamber 21 to the lower chamber 22. Reference numeral 38 denotes a natural convection suction port, which is provided so as to project on the door 2A and door 2B sides of the partition wall 20 so that the upper chamber 21 and the lower chamber 22 communicate with each other.

The operation of the high humidity chamber constructed as above will be described. Since the upper chamber 21 located on the upstream side of the discharged cool air is cooled lower than the lower chamber 22 located on the downstream side, the cool cold air in the upper chamber 21 is close to the interior box body 14 due to natural convection. The natural warm convection outlet 37 drops into the lower chamber 22, and the relatively warm cold air in the lower chamber 23 rises from the natural convection inlet 38 to the upper chamber 22 to form a cold air circulation cycle.

According to the present embodiment, the natural convection discharge port 37 and the natural convection suction port 38 form a cold air circulation cycle in the upper chamber 21 and the lower chamber 22, so that the temperature (humidity) of the upper chamber 21 and the lower chamber 22 is increased. ) Can be made uniform.

Next, the high humidity chamber in the fourth embodiment will be described with reference to FIGS. The same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. 39 is a partition wall and is a horizontal upper partition plate 2.
0A and a lower partition plate 39A having a shape inclined downward with respect to the back plate 16 of the inner box body 14, and is attached in close contact with the back plate 16.

According to the present embodiment, the dew attached to the inclined lower partition plate 39A of the partition wall 39 is discharged to the back plate 16 of the inner box 14 along the inclined portion, so that the dew adheres to the food on the shelf 32. It is possible to prevent the dew from falling.

[0040]

As described above, according to the present invention, the first cold air intake ports projecting from the both sides of the interior box facing the partition wall have a smaller diameter than the second cold air intake ports projecting from the interior box. With
In the inner box facing the cold air discharge port protruding from the back of the inner box,
By providing the wind direction plate for discharging the cool air in the second space in the partition wall, the cool air surely flows into the surface part of the inner box and the partition wall, and the heat exchange is surely performed.

According to the present invention, a natural convection circulation cycle of cool air in the upper chamber and the lower chamber is formed by providing the natural convection discharge port and the natural convection suction port that connect the upper chamber and the lower chamber to each other on the partition wall. The temperature (humidity) of the upper chamber and the lower chamber can be made uniform.

Further, according to the present invention, the lower partition plate of the partition wall facing the lower chamber is provided with the partition wall which is inclined downward with respect to the back plate of the inner box body, so that dew attached to the lower partition plate can be prevented. It is possible to prevent the dew drop on the food stored on the shelf that is discharged to the back plate of the body.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a high humidity chamber according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of the high humidity chamber shown in FIG.

FIG. 3 is a cross-sectional view taken along line BB of the high humidity chamber shown in FIG.

FIG. 4 is a vertical sectional view of a conventional high humidity chamber.

5 is a cross-sectional view taken along the line AA of the high humidity chamber shown in FIG.

6 is a cross-sectional view taken along the line BB of the high humidity chamber shown in FIG.

[Explanation of symbols]

 3 Insulation Box 4 Cooling Unit 10A Outer Box 10B Inner Box 10C Insulation Material 11 Evaporator 13 Evaporator Fan 14 Inner Box Body 15 Upper Plate 19 First Space Part 21 Upper Chamber 22 Lower Chamber 24 Cold Air Discharge Port 25 Square Hole 33 1st Cold air suction port 34 Second cold air suction port 35 Cold air suction duct 36 Wind direction plate 37 Natural convection discharge port 38 Natural convection suction port 39 Partition wall 39A Lower partition wall

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location F25D 23/06 N 7380-3L G05D 22/00 A 7314-3H

Claims (3)

[Claims] 1. An outer box, an inner box, an insulating box filled with a heat insulating material between the outer box and the inner box, a cooling unit disposed on the upper part of the insulating box, and An interior box body provided with a first space so as to form an air layer at a predetermined distance from each of the upper surface, the back surface, both side surfaces, and the lower surface; and an upper plate of the upper surface of the interior box body and the interior box body. An evaporator fan and an evaporator provided between them, and a partition wall having a square hole projecting to face the cool air discharge port projecting on the rear surface of the interior box body and partitioning the interior into an upper chamber and a lower chamber. A first cold air suction port projecting on both side surfaces of the interior box body facing the partition wall, and a cold air suction duct buried in the heat insulating box, 1. A high humidity chamber having a second cold air suction port having an opening area larger than that of the cold air suction port. 2. The high humidity chamber according to claim 1, wherein the partition wall is provided with a natural convection discharge port and a natural convection suction port that communicate the upper chamber and the lower chamber. 3. The high humidity chamber according to claim 1, wherein a lower partition plate of the partition wall facing the lower chamber has a partition wall which is inclined downward with respect to the back surface of the inner box.