JPH0510974U - refrigerator - Google Patents

Abstract

(57) [Abstract] [Purpose] To increase the cooling speed of natural convection refrigerators and prevent the occurrence of uneven cooling and the rise of internal temperature during defrosting. [Structure] The inside of the storage 4 is provided with a gap 14 above the inside of the storage 4.
A U-shaped outer fin coil 8 extending along both side wall surfaces and the front door surface 12, and an inner fin coil 9 arranged along the inner side of the outer fin coil 8 with the outer fin coil 8 and a required gap 14a. To provide. Below the cooling fin coils 8 and 9, separate drain drain pans 18 are provided along the fin coils 8 and 9.
On the other hand, a refrigerator 7a capable of separately cooling the respective fin coils 8 and 9 by providing a gap between the outer periphery of the shelf 5 and the inner wall of the inside 4 of the refrigerator.
And the defrosting means for individually defrosting the respective fin coils 8 and 9 to cool the inside 4 rapidly and evenly by the cold air flowing through the gaps 14, 14a and 14 '. Further, at the time of defrosting, one of the fin coils 8 and 9 is defrosted and the other is cooled to prevent the temperature rise in the interior 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  This device is mainly used to reduce the cooling speed and the temperature change during defrosting. The present invention relates to a refrigerator used for business purposes.

[0002]

[Prior art]

  Conventionally, a natural convection type commercial refrigerator is covered with a heat insulating material 1 as shown in FIG. 3, for example. An open / close door 3 is provided on the front of the stored storage 2, and a plurality of storage items are placed in the storage 4. A shelf 5 is provided. Further, a cooling fin coil 6 is provided on the upper part of the interior 4. The lower surface of the fin coil 6 is covered with a defrosting drain pan 18. It The fin coil 6 is connected to the refrigerator 7 on the storage 2, and the refrigerator 7 Cools the cooling fin coil 6 by compressing and circulating the refrigerant to cool it. Due to the natural convection, the heat in the refrigerator 4 is absorbed and radiated to the outside, and the refrigerator 4 is cooled. this At this time, the temperature inside the refrigerator is kept constant by the temperature controller 17 provided in the inside 4. Kept in.

[0003]   Moreover, the frost adhering to the cooling fin coil 6 stops the refrigerator 7 and wash | cleans frost with water. The frost is thawed by the heat that is dropped or leaked to the interior 4 through the heat insulating material 1. Remove by off-cycle defrosting.

[0004]

[Problems to be solved by the device]

  However, in the above, the drain pan is the entire bottom surface of the cooling fin coil. As a result, the convection of cold air is obstructed, and the contact efficiency between cold air and fins is poor. For this reason, the cooling efficiency per unit cooling capacity is low, and the inside of the refrigerator cannot be cooled evenly. There is a problem of causing unevenness.

[0005]   Also, defrosting the above is very time consuming and laborious. For this reason, defrost hands As a step, a heater pipe is installed in the cooling fin coil, and hot gas is supplied to the refrigerator. Equipped with a defrosting device to heat the cooling fin coil and defrost in a short time. You could think so. However, the heated cooling fin coil is There is a problem in that the temperature inside the chamber is significantly increased.

[0006]   Therefore, the object of this invention is to improve the cooling efficiency of the cooling fin coil while defrosting it. It is to prevent the temperature rise in the refrigerator at that time.

[0007]

[Means for Solving the Problems]

  In order to solve the above-mentioned problems, in the upper part of the storage, U-shaped outer fin coil that extends along the surface, and inside the outer fin coil Along the fin coil, the U-shaped inner flap is spaced at the required distance. An in-coil is provided, and each in-coil is installed below each fin-coil. Two drain drain pans are provided, and on the other hand, outside the shelves below both fin coils. A refrigerator is connected to both of the fin coils with a gap between the circumference and the inner wall surface of the storage. It has been configured.

[0008]   In addition, at this time, the refrigerator is to cool each fin coil separately, and The refrigerator may be provided with a means for independently defrosting each fin coil. Wear.

[0009]

[Action]

  In the refrigerator configured in this way, the cold air cooled by the outer fin coil is mainly Then, lower the shelves on both sides and the front door surface and the outer circumference of the shelf to cool each shelf in the refrigerator. Then, when reaching the lower part of the refrigerator, the gap between the rear wall surface and the shelf rises. Meanwhile, the inner frame The cold air cooled by the in-coil descends and cools the upper part of the inside of the cabinet mainly to the rear wall and the shelf. Rise the gap between.

[0010]   Further, the defrosting of the fin coil is performed by the outer fin coil separated by a required gap. And the inner fin coil individually for each cooling fin without defrosting. The inside of the refrigerator is cooled with a coil to prevent the temperature from rising.

[0011]

【Example】

  An embodiment of the present invention will be described below with reference to FIGS. At that time, The same parts as those of the conventional example shown in FIG.   The refrigerator shown in FIG. 1 is a natural convection type commercial business having two upper and lower doors 3 and 3'on its front surface. A two-door type, like the conventional one, the cooling fin coil 6 is provided on the upper portion 16 of the interior 4. Is provided. The cooling fin coil 6 includes a pair of outer fin coils 8 and The inner fin coil 9 and the inner fin coil 9 are provided below the respective fin coils 8 and 9. The width along the incoils 8 and 9 is slightly larger than the width of each fincoil 8 and 9. Two drain pans 18 for drainage are provided.

[0012]   As shown in FIG. 2, the outer fin coil 8 has side walls 10 and 11 and a front door surface 12. "U" shaped fin coil extending along the side wall 10, 11 and front door surface A gap 14 serving as a passage for cold air is provided between the gap 12 and the gap 12. The gap 14 is Optimally, it is provided, for example, on the order of 30 to 70 mm.

[0013]   The inner fin coil 9 is also arranged along the inner side of the outer fin coil 8. With a U-shaped fin coil, a required clearance 14 is provided between the outer fin coil 8 and the U-shaped fin coil. a is provided. The gap 14a is, for example, about 60 to 100 mm. It is provided in.

[0014]   Further, a cold air passage is provided between the outer periphery of each shelf 5 in the interior 4 and the side wall surfaces 10 and 11. There is a gap 14 ', which is 30-70 mm. It has become a degree.

[0015]   Therefore, the cold air cooled by the outer fin coil 8 is as shown by the arrow (a) in FIG. The gaps 14 and 14 'provided between the side wall surfaces 10 and 11 and the front door surface 12 When it descends and reaches the lower part 15 in the refrigerator while cooling the stored items placed on each shelf 5, The clearance 14 ″ between the shelf 5 and the rear wall surface 13 is raised. On the other hand, the inner fin coil 9 The cooled air is cooled by the outer fin coil 8 and the inner fin coil as shown in FIG. The gap 14a between the racks 9 descends without being obstructed by the drain pan 18, The shelf 5 of No. 6 is cooled and the clearance 14 ″ between the shelf 5 and the rear wall surface 13 is raised.

[0016]   Therefore, the interior 4 is efficiently and unevenly distributed by the flows (a) and (b) of both cold air. Chilled without.

[0017]   The refrigerator 7 a connected to the fin coils 8 and 9 has the fin coil 8 a. , 9 can be cooled independently. For example, a three-way valve or two independent compressors Those that have it are possible.

[0018]   The fin coils 8 and 9 are defrosted by the defrosting means. Excluding it As the frost means, an electromagnetic valve is provided in the refrigerator 7a to supply hot gas to each fin coil 8, 9 equipped with a defrost cycle so that it can be sent to each, both fin coils 8, It is possible to employ a heater pipe provided with the heater pipe 9.

[0019]   This embodiment is configured as described above, and a normal refrigerator cools the upper part 16 of the inside 4 of the refrigerator. The convection of cold air is caused by the flow of cold air (a) and the flow of cold air (a) that cools the lower part 15. It is carried out smoothly and the inside 4 is kept at a uniform storage temperature with little temperature unevenness. . In addition, the stored goods in the storage 4 are natural convection cooling methods, so they are likely to be fan-type cooling methods. In addition, it does not take a strong cold shower directly, and does not get dry, slick, discolored, etc. It rarely happens.

[0020]   Now, for example, the lower door 3'of this refrigerator is opened and closed, and the stored items in the refrigerator 4 are put in and taken out. Then, warm outside air flows into the inside of the refrigerator 4, and the temperature of the lower portion 15 inside the refrigerator rises. this At this time, the lower part 15 in the refrigerator is directly cooled by the flow of cold air (a) that cools the lower part, Return to storage temperature in time. Similarly, when opening and closing the upper door 3, The internal temperature is the storage temperature efficiently in a short time due to the flow of cold air (a) that cools the upper part 16. Therefore, the damage to the stored goods in the refrigerator 4 due to the temperature change is small.

[0021]   When defrosting the cooling fin coil 6, defrost both fin coils 8 and 9. Do not perform at the same time, for example, send the hot gas from the refrigerator 7a to the inner fin coil 9 Perform defrosting. During this time, the refrigerant is sent to the outer fin coil 8 to cool the inside 4 Nau.   When the inner fin coil 9 has been defrosted, the outer fin coil 8 will be released in reverse. Togas is sent to defrost. At this time, similarly to the above, the inner fin coil 9 is cooled. The medium is sent to cool the interior 4.   In this way, defrosting is performed alternately on each of the fin coils 8 and 9 and is not defrosted. The fin coils 8 and 9 cool the interior 4. Therefore, the temperature of the interior 4 during defrosting The rise is suppressed low, and damage to the stored items due to changes in the internal temperature can be reduced.

[0022]

【effect】

  Since the present invention is configured as described above, the inside of the refrigerator can be evenly and evenly cooled. Can be cooled so that it does not stir.

[0023]   In addition, the defrosting means increases the speed of defrosting while the interior of the warehouse is being defrosted. The temperature rise can be suppressed low. For this reason, stored products due to temperature changes in the refrigerator You can also reduce the damage.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment.

FIG. 2 is a transverse sectional view of the same.

FIG. 3 is a partial sectional view of a conventional example.

[Explanation of symbols]

3,3 'open / close door 4 inside 5 shelves 7a refrigerator 8 Outside fin coil 9 Inner fin coil 10 Side wall surface 11 Side wall surface 12 Front door surface 13 Rear wall 14 Gap between the outer circumference of the shelf and the wall surface 14a Gap between outer fin coil and inner fin coil 14 'gap 14 '' gap 15 Lower part of the storage 16 upper part 18 drain pan

Claims (2)

[Scope of utility model registration request] 1. A predetermined gap is provided in an upper part of the storage compartment between a U-shaped outer fin coil extending along inner surfaces of both side walls in the storage compartment and an inner surface of a front door and the inner fin of the outer fin coil along the inner side of the outer fin coil. And two U-shaped fin coils arranged in parallel with each other, and two drain drain pans along each fin coil are provided below each fin coil. A refrigerator in which a refrigerator is connected to both of the fin coils. 2. The refrigerator according to claim 1, wherein the refrigerator cools each fin coil separately, and the refrigerator includes a defrosting unit that defrosts each fin coil independently.