JPH02279972A - Refrigerator - Google Patents

Abstract

PURPOSE:To prevent dew drops into stored food and balance the temperatures between an upper storage chamber and a lower storage chamber by allowing a good heat conductor box to comprise a top board, both side plates, a rear plate and a bottom plate, forming said top board on the slant, and comprising said top board of a material whose thermal conductivity is lower than other plates. CONSTITUTION:A good heat conductor box 4 comprises a top board 4A, both side boards 4B and 4C, a rear board 4D, and a coarse decoration board 4E. The top board 4A is made of a material whose thermal conductivity is lower than the other boards from 4B to 4E. The cooled air heat-exchanged by a vaporizer 10 is discharged from blowoff port 7 to a cooled air passage 5 by a fan 11, thereby cooling the good conductor box 4. The surface temperature of the top board 4A of the good conductor box 4 tends to be higher than the surface temperature of the other four sides of the board from 4B to 4E. Therefore, the other four sides are subject to dew condensation while the top board 4A is less subjected to dew condensation. Nevertheless, a slight amount of dew are condensed on the top board 4A. However, the amount of dew condensation is extremely small, which prevents dews from dropping over food 4. The dews flow backward along on the inclination of the top board 4A so that they may be discharged to the outside from drain pipes 20 and 23 by way of the rear board 4D and the bottom board 4E.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a cooling storage that indirectly cools a storage chamber defined inside a storage main body.

(b) Prior art As a prior art, Japanese Utility Model Application No. 60-93882 discloses
A heat-insulating outer box and a thermally conductive inner box are fixedly installed with a certain space between them, and cold air is circulated between the outer box and the inner box to cool the inner box, and the inside of the inner box is used as a refrigerator. The evaporator of the refrigerator to create cold air and the 1ζ fan that circulates the cold air are placed in the cold air circulation space between the inner box and the other sets of the refrigerator are placed in the outer box. 1, to be equipped outside the
The structure of a refrigerator having a V-shape is disclosed.

Mat(, Japanese Patent Application Laid-open No. 1981-657 () +'j publication,
(Inside the storage chamber of the insulated box made of heat insulating material, etc., form a plurality of compartments in the inner box that do not communicate with L Riai-cho, and A storage is disclosed in which heat-exchanged cold air is circulated through a cold air passage by a blower (7) and is indirectly cooled sequentially from the uppermost compartment.

(c) Problems to be Solved by the Invention Although the structure of the former prior art refrigerator can maintain a high humidity in the storage compartment, it has a better heat conduction temperature than the temperature of the storage compartment due to indirect cooling. When the temperature of the box becomes low and air enters when the door is opened and closed, condensation forms on the walls of the inner box. In particular, the dew condensed on the top wall of the inner box falls onto the stored food, reducing the freshness of the food. There are some problems that significantly reduce the

In addition, the prior art storage on the rear right is cooled from the top inner box (therefore, when cooling the bottom inner box, the temperature of the cold air in the cold air passage becomes high, and as a result, There was a problem in that the temperature in the bottom compartment was higher than that in the top compartment.

In view of the problems of the prior art, the present invention aims to prevent dew from falling onto stored foods and maintain the freshness of the foods. ,
In addition, a tζ cooling storage is provided for the purpose of balancing the temperature of the upper and lower storage chambers.

(d) Means for Solving the Problems In order to solve the above 61 problems, the present invention provides a heat conducting box formed with a heat insulating wall [7] inside the storage main body, with a space between the heat insulating wall and the heat conducting box. In the cooling storage, the inside of the heat conduction box is set as a storage chamber, and a cooling means for indirectly cooling the storage chamber is provided in a space between the heat insulation box and the heat conduction box. The Ryodo box is a cooling storage that consists of a top plate, side plates, rear plate, and bottom plate, the top plate is formed with a II diagonal shape, and the top plate is made of a material with lower thermal conductivity than other materials. .

Further, the present invention provides a heat conduction box which is disposed inside the storage main body formed of a heat insulating wall, with a space between the heat conduction wall and the heat conduction box, and the inside of the heat conduction box is used as an old storage room. , a cooling storage comprising a cooling means for indirectly cooling the storage chamber in a space between the heat insulation box and the heat conduction box, the heat conduction box having a top plate;
This cooling storage is made up of side plates, a rear plate, and a bottom plate, and has a top plate inclined and a heat insulating material attached to the surface of the top plate on the space side.

Further, in the present invention, a heat conducting box is disposed inside the storage main body formed of a heat insulating wall, with an interval from the heat insulating wall, and the inside of the heat conducting box is used as a storage chamber. In addition, in the cooling storage which is provided with a cooling means for indirectly cooling the storage chamber in the space between the heat insulation box and the heat conduction box, the heat conduction box is composed of a top plate, both side plates, a rear temporary plate, and a bottom plate. This cooling storage is made by forming a top plate with a slope and applying a hydrophilic paint to the surface of the top plate facing the storage chamber.

Furthermore, the present invention is provided with a Kitakami heat conducting box formed of a heat insulating wall and disposed inside the storage main body with a space between the heat insulating wall and the inside of the upper and lower heat conducting boxes, respectively. -1- In addition to forming a storage room and a lower storage room, a refrigeration system evaporator and a cold air blower are installed in the space between the insulation box and the upper and lower heat conduction boxes. In a cooling storage warehouse configured to indirectly cool the upper and lower storage chambers by flowing cold air from between the chambers to the lowest space, a heat insulating material is pasted on the surface of the top plate of the upper heat conduction box on the side of the space. This is a cold storage facility made up of

In the present invention, upper and lower heat conduction boxes are arranged inside the storage main body formed of a heat insulating wall 17 with a space between them and the heat insulating wall, and the inside of the upper and lower heat conduction boxes are connected to each other. In the case of an upper storage room and a lower storage room, a refrigeration system evaporator and a cold air circulation blower are installed in the space between the insulation box and the upper heat conduction box, and from the top space to the bottom space. Space-1 A cooling storage chamber configured to indirectly cool the upper storage chamber by flowing cold air. This cooling storage is constructed by pasting a heat insulating material on the surface of the top plate facing the space, and applying a hydrophilic paint 1 to the surface of the top plate facing the storage chamber.

(E) Function According to the present invention, for example, the top plate of the thermal conductive box is made of stainless steel (thermal conductivity approx.) 4. k Oa I / m h 0
C), and by using aluminum (thermal conductivity approximately 97 k ca I / m h 'C) for the other four plates, the surface temperature of the top plate will be lower than the temporary surface temperature of the other four sides. This also reduces condensation on the top plate.

According to the present invention, the surface temperature of the top plate is made higher than the surface temperature of the other four plates by pasting, for example, a foamed polyethylene sheet as a heat insulating material on the space side surface of the top plate, As a result, condensation on the top plate is suppressed.

Furthermore, according to the present invention, since the surface of the top plate facing the storage room is coated with hydrophilic paint, even if dew condensation occurs on the top plate,
The contact area between dew condensation and the top plate can be increased, and dew can be prevented from turning into water droplets and falling onto the stored food.

Furthermore, according to the present invention, the surface temperature of the top plate of the upper heat conducting box increases due to the effect of the heat insulating material, suppressing dew condensation on the top plate, and the upper heating box being cooled first. By lowering the heat exchange coefficient, it is possible to equalize the temperature of the upper storage chamber and the lower storage chamber.

Furthermore, the present invention can suppress condensation on the top plate, and also balance the temperature of the two storage compartments. However, due to the action of the hydrophilic paint applied to the surface of the top plate facing the storage room, dew condenses and the contact area between the condensation and the top plate can be widened, and this dew is caused by the tilting effect of the top plate. Since the dew is guided to the rear of the storage room, it is possible to prevent dew from turning into water droplets and falling onto the stored food.

(f) Examples Examples of the present invention will be described below with reference to the drawings. 1st
In the figures to FIG. 3, reference numeral 1 denotes a storage main body formed by a heat insulating wall 2, which is constructed by filling a heat insulating material between both the inner and outer boxes.
A 1 m opening in front of the opening is closed by a door body 3 so that it can be opened and closed. Inside this storage main body 1, 11 of the insulation g2
A heat conduction box 4 with an open front is firmly installed to form a cold air passage 5 at a distance from the inner wall surface.
The inner rod defined by the heat guiding box 4: Il'i
This will be designated as Kuramuro 6. A plurality of shelves 7 are arranged in the storage room 6 in the direction F, and a tray 9 containing stored foods 8 is placed on the shelf 7-1-.

The heat conducting box 4 is made up of a person 4Δ, side plates 4B and 4C, a rear plate 4D, and a bottom plate 4E, among which the top plate 4A is made of a material with lower thermal conductivity than the other plates 4B to 41. ,
For example, use Svenres (thermal conductivity approx. 14.) for top plate 4A.
< c a l / m hoC)),
The side plates 4B and 4C1, the rear plate 4D, and the bottom plate 4E are made of aluminum (thermal conductivity approximately 97 k cal /m h 'C
).

In addition, in the space between one side of the heat insulating wall 2 and the side plate 4A of the thermal conductivity box 4 opposite thereto, a unit cover 12 is provided as a cooling means, which has an air outlet 10 at the upper part and an inlet 11 at the lower part. A refrigerating system evaporator 13 and a cold air circulation blower 14 are housed inside the unit cover 12 facing the outlet 10. The evaporator 13 is defined on the outer side of the main body 1, and is disposed in the machine room 15.
(c) is connected to the electric compressor 16 and condenser 17 by a refrigerant pipe 18. A guide plate 19 prevents a short cycle of cold air and actively guides the cold air to a space opposite to the space where the evaporator 13 is disposed. And the bottom plate 4
A drain pipe 20 for dew treatment is connected from E to the evaporator 1.
Drain pipes 22 for defrosting water treatment are connected from the tray 21 to a common drain pipe 23 by pushing through the heat insulating wall 2, respectively.

In the above configuration, the cold air heat-exchanged in the evaporator 10 is discharged from the blower [2] 7 to the cold air passage 5 by the blower I+, and cools the heat conduction box 4.

By kneading, the air in the storage room 6 is indirectly cooled through the heat conduction box 4, and at this time, the surface temperature of the top plate 4A of the heat conduction box 4 is lower than that of the other four plates 4B. to 4V: The temperature is higher than the surface temperature of the other four plates 4B to 4V.
DK condenses on E, making it difficult to condense on top plate 4A. Even so, a small amount of dew will condense on the top plate 4A, but since 1) is extremely small,
It flows backward along the slope of the top plate 4A without dropping onto the food 81, and passes through the rear plate 4D and the bottom plate 4E to the drain pipe 20. Water is drained to the outside from 3. Moreover, such an indirect cooling method for the storage chamber 6 is very effective in that the storage chamber 6 can be maintained at a high humidity level.

Next, another embodiment of the present invention will be described with reference to FIGS. 4 and 5. In addition, regarding the same constituent parts as in the embodiment described above, 4-4, which is the same as in the embodiment, will be taken as an example, and a detailed explanation of the structure will be omitted. The heat conduction box 24 defining the storage room 6 includes a top plate 24A, side plates 2/IB and 24G, and a rear plate 2/I.
Consisting of D and bottom plate 241 pieces, each plate 24A to 24E
are made of materials with good thermal conductivity, such as stainless steel or aluminum. Of these, 24 top plates
A sheet 25 of foamed polyethylene, for example, is attached as a heat insulating material to the surface of the cold air passage 5 of Δ.

According to the above configuration, the cold air that has undergone heat exchange in the evaporator 10 is discharged from the blower lower to the cold air passage 5 by the blower 1, thereby cooling the heat conduction box 24. As a result, the air in the storage chamber 6 is heated. It will be indirectly cooled through the guide box 24, and at this time, the surface temperature of the top plate 24△ of the heat guide box 24 to which the foamed polyethylene sheet 25 is attached will be lower than that of the other four plates 24B. Since the surface temperature becomes higher than the surface temperature of the top plate 24. Condensation on A will be reduced. Even if you move, a small amount of dew will condense on the top plate 24A, but since the amount is extremely small, it will not fall on the top plate 24A without falling onto the stored food 8. The water flows rearward along the slope, passes through the rear plate 24D and the bottom plate 241, and is drained to the outside from the drain pipe 20.23.

Moreover, the indirect cooling method of such 11'i storage room [5]
It is very effective in that the storage room 6 can be maintained at high humidity.

Furthermore, as described above, the present invention makes the material of the top plate 4A of the heat conduction box 4 different from the material of the other four plates 4 I3 to 4F, and the material of the top plate 24A of the heat conduction box 24 is Instead of attaching a heat insulating material such as foamed polyethylene sort 25 to the surface on the cold air passage 5 side, the surface on the storage compartment 6 side of the top plate 4A of the heat conduction box 4 or the top plate 24Δ of the heat conduction box 24 A hydrophilic paint may be applied to the surface.

In this case, condensation will occur on the top plate 4A or 24A like the other four plates, but due to the action of the hydrophilic paint, the contact area between the dew and the top plate 4A or 2/IA. is widened, dew does not form into water droplets (therefore, dew does not fall onto the stored food 8-1-, and the top plate 4Δ or 24
It flows backward along the slope of A, and the rear plate 41) or 2
/I I) The water is drained to the outside from the drain pipe 20.23 via the bottom plate 4E or 24E.

Note that the cooling means is not limited to the one in the embodiment, but can be freely changed as long as it indirectly cools the storage chamber. Further, in each embodiment of the present invention, the top plate is inclined in the direction of the rear plate, but this direction is not limited to the embodiments. Furthermore, the present invention exhibits similar effects even when applied to a vertical cooling storage, in addition to the horizontal cooling storage as in the embodiment.

Next, still another embodiment of the present invention will be described with reference to FIGS. 6 and 7. Reference numeral 26 denotes a storage main body formed by a heat insulating wall 27, which is constructed by filling a heat insulating material between the inner and outer boxes, and whose front opening is closed by a door body 28 so as to be openable and closable. . Inside the storage main body 26, a top heat conduction box 29 and a top heat conduction box 30 made of, for example, stainless steel and having an open front are fixedly installed with a space between them and all the inner wall surfaces of the heat insulating wall 27. The space formed by kneading is used as a cold air passage 31, and the upper heat conducting box 29 and the upper heating conducting box 3
The inner sides defined by 0 are an upper storage chamber 32 and a lower storage chamber 33, respectively.

In addition, the top wall of the heat insulating wall 27 and the upper heat conduction box 2 facing it
In the cold air passage 31 between the top plates 9 and 9, a unit power bar 36 having a blowout @ 134 at the front and a suction port 35 at the rear is disposed as a cooling means. Inside, there is a refrigerating system evaporator 37 and a
A blower 38 for circulating cool air is housed in the space opposite the air outlet 34.

The evaporator 37 is an electric compressor 3 placed on the ceiling wall of the main body 26.
9 and condenser 40 to form a freezing cycle. Reference numeral 41 indicates a condensing tank air cooling funnel.

The cold air path between the rear plates of the lower heat guide box 29.30 is opposite to the rear wall of the insulation wall 27.
A vertical partition plate 42 is provided below the discharge passage 31A.
and return passageway 3 ] Sectioned into B, and both return passageways are connected to Dongbu connection port 4.
It communicates at 3. Further, in the cold air passage 31 between the bottom plate of the upper heat conduction box 29 and the top plate of the upper heat conduction box 30, a horizontal horizontal partition plate 45 with a communication port 44 formed in the front part is arranged.
I'm here.

(The surface on the space side (cold air passage 31 side) of the heat conduction box that is cooled first, that is, the cold air passage of the top plate 29A of the upper heat conduction box 29 that slopes low toward the rear. For example, a foamed polyethylene sheet 46 is pasted (7) on the surface on the 31 side as heat insulation +1.

In the above configuration, the cold air that has undergone heat exchange in the evaporator 37 is discharged from the air outlet 34 to the uppermost cold air passage 31 by the blower 38, and is circulated along the path indicated by the arrow in FIG.
First, the top plate of the upper heat conducting box 29 is cooled through the foamed polyethylene sheet 46, and then the rear plate, both side plates and the bottom plate are cooled, and the cold air passes through the connecting port 44 and cools the upper heat conducting box 29. 30
The upper plate, the rear plate, the side plates and the bottom plate are cooled, and the liquid is returned to the evaporator 37 again from the suction port 35 through the return passage 3]B from the communication port 43. As a result, the air in the main storage chamber 32 and the lower storage chamber 33 is indirectly cooled through the heat conducting boxes 29 and 30 below -F.

According to the flow of cold air as described above, the top plate 29A of the upper heat conduction box 29 is cooled via the foamed polyethylene sheet 46, so the surface temperature of the top plate 29A of the upper heat conduction box 29 is higher than the surface temperature of the other four plates, so dew condenses on the other four plates, making it difficult to condense on the top plate 29A.Even so, a small amount of dew condenses on the top plate 29A. However, the amount is extremely small l(
In order to prevent the food from falling onto the stored food, it flows backward along the slope of the top plate 29△, passes through the rear plate, the bottom plate, and then drains into the drainage system (
(not shown) to the outside.

Moreover, in the present invention, the heat exchange rate between the cold air at the lowest temperature and the top plate 29A of the upper heat conduction box 29 is higher than that of the foamed polyethylene sheet 4.
Due to the action of 6), the difference in cooling temperature between the upper heat conduction box 29 and the upper heat conduction box 30 is reduced,
As a result, the extreme temperature imbalance between the main storage chamber 32 and the lower storage chamber 33 can be eliminated.

The thickness of the foamed polyethylene sheet 21 is the same as that of the main storage chamber 7.
This is determined based on the temperature measurement results of the lower storage chamber 8. However, the heat insulating material is not limited to the one shown in the embodiment, and various types can be selected.

And, the present invention provides such an embodiment t((+'1 plus,
By applying hydrophilic paint to the surface of the storage chamber 32 side of the top plate 29A of the upper heat conducting box 29, a slight amount of dew can be removed from the top plate 29.
Assuming that dew condenses on A, the contact area between this dew and the top plate 29A can be widened, and the dew turns into water droplets and flows backward along the slope of the top plate 29A, causing the back plate and then the bottom plate to become wet. The water is then drained to the outside through a drainage device (not shown).

In addition, in order to prevent dew from falling from the ceiling wall, the cooling storage for type C has a structure in which a plate (not shown) is placed along the wall in the second part of the storage room to catch dew. Generally adopted.

Although the present invention is effective even if the dew-receiving treatment is removed,
If a plate is installed to catch the dew, it is possible to more reliably prevent dew from dripping into the storage room.

(g) Effects of the invention As described above, the present invention provides an indirect cooling type storage.
This will have the effects listed below.

■The thermal conductive box that defines the storage room is composed of a top plate, a rear plate on both sides, and a bottom plate, and the top plate is formed at an angle, and the top plate is made of a material with lower thermal conductivity than the other four sides. As a result, condensation on the top plate can be suppressed, and a small amount of dew condensed on the top plate is guided to the rear plate or both side plates by the tilting action of the top plate. Because of this, stored foods -
This prevents H7+4 from falling into the food and maintains the freshness of the stored food.

■The thermal conductive box that defines the storage room is composed of a top plate, a rear plate on both sides, and a bottom plate, and the top plate is sloped.
In this case, as well, condensation on the top plate can be suppressed, and in this case as well, condensation on the top plate can be suppressed. Due to the slope of the top plate, the amount of dew that has condensed on the plate is concentrated on the rear plate or both side plates, which prevents the dew from falling onto the stored food. It is important to maintain the freshness of stored foods.

■The thermal conduction box that defines the storage room is composed of a top plate, a rear plate on both sides, and a bottom plate. Apply hydrophilic paint.
Therefore, even if condensation occurs on the top plate, by widening the contact area between the condensed dew and the top plate, the dew is prevented from turning into water droplets, and the dew is removed later by the slope of the top plate. Since the food cannot be guided to the plate or both side plates, it is possible to effectively prevent the food from falling onto the stored food, and the freshness of the stored food can be maintained well.

■ Inside the storage body, a ten-storage room defined by the upper heat conducting box and a lower storage room defined by the upper heat conducting box are formed;
In a refrigerated storage warehouse configured to indirectly cool the upper and lower storage compartments by circulating cold air, a heat insulating material is pasted on the cold air passage side of the top plate of the two-heat N-conductor box that is cooled first. l(Me, dew condensation on the top plate is suppressed, preventing dew from falling onto the stored food-1, maintaining the freshness of FFI-stored food, and keeping the upper storage compartment and lower needle This has the excellent advantage of achieving uniform temperature in the M chamber.

■ In addition to the structure in which a heat insulating material is attached to the top plate of the two-heat Ryodo box on the side facing the cold air passage, the top plate of the upper-heat Ryodo box is sloped low to the rear, and the top plate is placed on the storage compartment side. By coating the surface of the food with a hydrophilic paint, it is possible to more effectively prevent dew from falling onto the stored food.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional side view of the cooling storage of the present invention, FIG. 2 is a vertical sectional iE im view, and FIG. 3 is a front view of the cooling storage
FIG. 4 is a vertical side view of a cooling storage according to another embodiment of the present invention, FIG. 5 is a vertical front view of the same, FIG. 6 is a vertical side view of a cooling storage of the present invention, and FIG. 7 is a vertical front view of the same. It is. 1.26 Storage body, 2, 27-insulation wall, /I, 2
/1 heat conducting box, 4A, 24A-top plate, 4B, 4G,
24B. 24G ・Side plate, 4D, 24+) Rear plate, 4+E, 2
4E Bottom plate 5.31 Cold air passage (space), 6-Storage room, 13.37 Evaporator, 14.38-Cold air circulation blower, 25.46 Foamed polyethylene sheet (insulation material)
, 29-''2-heat leading box, 30-upper heat leading box, 32-upper storage room, 33-lower storage room.

Claims (1)

[Claims] 1. A heat conducting box is disposed inside a storage main body formed of a heat insulating wall, with a gap from the heat insulating wall, and the inside of the heat conducting box is used as a storage room. In addition, in the cooling storage in which a cooling means for indirectly cooling the storage chamber is provided in a space between the heat insulation box and the heat conduction box, the heat conduction box is composed of a top plate, both side plates, a rear plate, and a bottom plate. A cooling storage, characterized in that the top plate is formed at an angle, and the top plate is made of a material having a lower thermal conductivity than other plates. 2. A heat conducting box is disposed inside the storage main body formed of a heat insulating wall, with a space between the heat conducting wall and the heat conducting box, and the inside of the heat conducting box is used as a storage room. In the cooling storage, which is provided with a cooling means for indirectly cooling the storage chamber in a space with a heat conduction box, the heat conduction box is composed of a top plate, both side plates, a rear plate, and a bottom plate, and the top plate is formed at an angle. The cooling storage is characterized in that a heat insulating material is attached to the surface of the top plate on the side of the space. 3. A heat conducting box is disposed inside the storage main body formed of a heat insulating wall, with a space between the heat conducting wall and the heat conducting box, and the inside of the heat conducting box is used as a storage room. In the cooling storage, which is provided with a cooling means for indirectly cooling the storage chamber in a space with a heat conduction box, the heat conduction box is composed of a top plate, both side plates, a rear plate, and a bottom plate, and the top plate is formed at an angle. The cooling storage is characterized in that a hydrophilic paint is applied to the storage chamber side surface of the top plate. 4. Inside the storage main body formed of a heat insulating wall, upper and lower heat conduction boxes are arranged with a gap from the heat insulating wall, and the inside of the upper and lower heat conduction boxes is formed into an upper storage room and a lower storage room, respectively. At the same time, a refrigeration system evaporator and a cold air circulation blower are installed in the space between the insulation box and the upper and lower heat conduction boxes, and cold air is flowed from the top space to the bottom space to fill the upper and lower storage compartments. A cooling storage configured for indirect cooling, characterized in that a heat insulating material is affixed to the space-side surface of the top plate of the upper heat conduction box. 5. Inside the storage main body formed of a heat insulating wall, upper and lower heat conduction boxes are arranged at a distance from the heat insulating wall, and the inside of the upper and lower heat conduction boxes is formed into an upper storage room and a lower storage room, respectively. At the same time, a refrigeration system evaporator and a cold air circulation blower are installed in the space between the insulation box and the upper and lower heat conduction boxes, and cold air is flowed from the top space to the bottom space to fill the upper and lower storage compartments. In a cooling storage configured for indirect cooling, the top plate of the upper thermal conductive box is formed with a low slope toward the rear, a heat insulating material is attached to the surface of the top plate on the space side, and A cooling storage chamber characterized by having a hydrophilic paint applied to the storage chamber side surface of the board.