JPH0454156B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ceiling-suspended cooling device that is hung from the ceiling wall of a prefabricated refrigerator, for example, and which prevents the outer plate, evaporator, and dew pan from being bent, and also prevents the outer plate from bending against the partition body. To facilitate the installation of a dew pan and a defrosting heater, and to ensure reliable opening and closing operations of the dew pan.

Embodiments of the present invention will be described below with reference to FIGS. 1 to 5. Reference numeral 1 refers to a ceiling-mounted cooling device that is suspended from the ceiling wall of a large refrigerator such as a prefabricated refrigerator, and a plate having an air outlet side as an air outlet. A fin-type evaporator 2, a plurality of axial-flow type blowers 3, 3... that send a cold air flow to the evaporator, and a plurality of metal suspended fixtures 4, 4... fixed to the ceiling wall. It is composed of a metal outer plate 5 serving as the outer cover of the device, and a metal dew pan 6 disposed directly below the evaporator, and cools the inside of the refrigerator. As shown in FIG. 4, the evaporator includes a plurality of aligned plate-shaped aluminum fins 7, 7, etc., and is arranged on both left and right sides of the fins and at appropriate places between the fins, and the fins are arranged in parallel with a plurality of equal plate-shaped fins. It is composed of a plurality of metal partitions 8, 8... divided into groups 7A, 7B... and a plurality of metal refrigerant pipes 9, 9... perpendicular to each of the fins and partitions, It exchanges heat with the cold air flow from ... to lower the temperature to the desired temperature. The blower consists of a propeller 3a and an electric motor 3b, which are provided in the same number as the fin groups 7A, 7B, etc., and the propeller is connected to a ventilation hole 10, which is a suction port, formed on the back wall of the circular outer plate 5. The electric motor is fixed to the back wall of the outer plate 5 with support members 11, 11. The hanging tool partitions 8, 8...
The dew pan 6 and the like are directly or indirectly suspended and supported, and are prepared in the same number as the number of partitions or less than the number of partitions, with part of the front and rear ends facing downward as shown in FIG. Holes 4c, 4 that are cut and raised to face and connect with the front and back surfaces of the partition body.
Attachment pieces 4a and 4b with d attachments are formed, and holes 4e and 4f for inserting hanging tools such as bolts for fixing the hanger to the ceiling wall of the refrigerator are formed on the outside of the attachment pieces. The partition body has flanges 8a, 8b which are bent at right angles at the front, top and bottom of the four end faces, and the front and rear flanges are provided with mounting pieces 4a, 4b and holes 8c, 8d for mounting the dew pan 6. , 8e, and holes 8f and 8g for mounting the outer plate 5 are formed in the rear flange. Most of the front surface and the bottom surface of the outer surface plate are open, the air outlet side of the front-opening evaporator 2 is adjacent to the outer surface plate, and together with the dew pan 6, a duct is formed. The dew pan is connected to an evaporator 2 and blowers 3, 3.
It is disposed so as to be located directly below the outer surface plate 5, and is attached so as to be openable and closable with a hinge 12 so as to accommodate the lower end of the outer surface plate 5 and to facilitate maintenance and inspection of the evaporator and blower.

In addition, the partitions 8, 8...on the air suction side, which is the air inlet side, have a notch 18 as shown in FIG.
A defrosting heater 16 is formed on the end surface of the notch 18 near the air suction port surface of the fins 7, 7, and protrudes in the air suction direction beyond the air suction port surface. , 16... are formed in multiple stages for fitting the grooves 19, 16...
When the evaporator 2 is defrosted using the defrosting heaters 16, 16, . . ., these heaters are held in the grooves 19, 19, . . ., as shown in FIG.

Next, the assembly of the cooling device 1 will be explained. After the upper wall of the outer plate 5 is interposed between the suspended fixtures 4, 4... and the partitions 8, 8... of the evaporator 2, The suspended fixture and the partition body, and the partition body and the outer plate are connected with bolts 13, screws 14, etc., respectively, and the dew pan 6 screws 15 and the hinge 1 are attached to the lower ends of the partition bodies 8, 8...
2 connects to open and close freely, blower 3,
3... are assembled by fixing them to the outer surface plate 5.

According to the above configuration, the evaporator 2, the outer plate 5, and the dew pan 6 can be supported by the partitions 8, 8, . The deflection of the evaporator 2, i.e. the refrigerant conduits 9, 9...
It is possible to prevent the deflection of the fins and the non-parallel state of the fins caused by this deflection. Also, since the outer surface plate 5 and the dew pan 6 are fixed so as to cover the partition, the installation work is not only easy, but also easy to install. It is possible to improve the mounting strength of the face plate 5 and the dew pan 6, and also to prevent deflection in the width direction.Moreover, it not only prevents deflection, but also provides enough strength to receive a large amount of frost peeled off from the evaporator 2 during defrosting. Strength can be imparted to the dew pan 6. In addition, the vibration noise of the outer surface plate 5 generated due to the operation of the blowers 3, 3, etc., which are arranged between the partitions, facing the fin groups 7A, 7B, partitioned by the partitions 8, 8,... can be made smaller by the partitions 8, 8, . Furthermore, the cold air flow formed by each blower 3, 3... is divided into individual blowers by partitions 8, 8... to prevent the cold air flows from colliding with each other due to the dynamic pressure of each blower. The generation of turbulent airflow can be eliminated, and as a result, the pressure of the cold airflow reaching the fin groups 7A, 7B, . . . can be equalized, and the heat exchange efficiency of the evaporator 2 can be improved.

In addition, a notch 1 is provided on the air suction side of the partitions 8, 8...
8 is formed, and when assembling the cooling device or replacing the defrosting heaters 16, 16...
8, each defrosting heater can be easily attached and removed.

When defrosting the evaporator 2, the defrosting heaters 16, 16... are placed along the grooves 17, 17... formed on the side surfaces of the air suction ports of the fins 7, 7... of the evaporator 2. , are fitted into the grooves 19, 19... formed in the partitions 8, 8..., so the defrosting heaters 16, 16... melt the ice and frost adhering to the air inlet side of the evaporator 2 and remove the dew from the dew pan 6. The dew treatment of the fins 7, 7... and the partitions 8, 8... can be performed well. Also, during defrosting operation, the defrosting heaters 16, 16... fitted in the partitions 8, 8...
The heat is transmitted to the hinge 12 through the metal partitions 8, 8, . It can be treated in the same way as dew from the evaporator 2 and the outer surface plate 5. For example, when inspecting the blower 3, the dew pan 6 can be rotated smoothly without being hindered by ice and frost, and the opening/closing work can be done easily. It can be done easily.

The hanging devices include a horizontal piece that is formed with an insertion hole for a hanging device such as a bolt and is fixed to the top wall of a refrigerator, for example, and a horizontal piece that is formed with an insertion hole for a hanging device and attached directly to the upper part of the front end of the partition or on an external plate. It may be approximately L-shaped, consisting of a vertical piece that is indirectly fixed via a vertical piece, and the number of locations from which the cooling device is suspended by the suspended fixture increases or decreases depending on the weight of the evaporator, the outer surface, and the dew pan. Alternatively, the cooling device may have a structure in which cold air is sucked into a blower via an evaporator and blown out from the blower.

As described above, the present invention is arranged on both sides of a plate-fin type evaporator having a plurality of plate-like fins arranged in a row, and between the both sides, and a notch is formed on the air inlet side. a partition member having a groove formed in the end face of the notch near the end face on the air inlet side; an outer plate fixed to the partition member so as to cover the evaporator; The defrosting heater is rotatably fixed to the partition body via a hinge so that it can be rotated from a normal position where it receives dew from the evaporator and the outer surface plate to a position where the lower surface of the evaporator is released. Since the evaporator, outer plate, and dew pan are equipped with a dew pan, the weight of the evaporator, the outer plate, and the dew pan are distributed by a plurality of hanging devices, and the evaporator, the outer plate, and the dew pan are supported by each partition. In addition to improving the mounting strength of each of the evaporators, the outer surface plate, and the dew pan by preventing deflection in the width direction,
Since the partition itself also serves as a support member for the defrosting heater, it is easy to attach the outer plate, dew pan, and defrosting heater to the partition, and the cooling system can be easily assembled. The defrosting heater can be easily installed and removed through the notch formed on the side, and the defrosting heater can also remove ice and frost adhering to the partition body in the same way as ice and frost adhering to the fins. In addition, the heat from the defrosting heater is transmitted to the hinges via the partitions, and the ice and frost attached to the hinges can be quickly melted. When opening and closing the dew pan, the dew pan can be rotated by the hinge without being hindered by ice and frost, and the opening and closing operations can be performed smoothly.

[Brief explanation of the drawing]

The drawings show an embodiment of the cooling device of the present invention; FIG. 1 is a front view of the cooling device, FIG. 2 is a plan view thereof, FIG. 3 is a sectional view taken along line A-A' in FIG. 1, and FIG. 4 is a view from the back. FIG. 5 is a perspective view of the main part of the hanging device. 2...Evaporator, 3...Blower, 5...Outer plate,
7... Fin, 8... Partition body, 9... Refrigerant conduit,
12... Hinge, 18... Notch, 19... Groove.

Claims (1)

[Claims] 1 Disposed on both sides of a plate-fin type evaporator having a plurality of aligned plate-like fins, and between the both sides, a notch is formed on the air inlet side, and a notch is formed near the end face of the plate-like fins on the air inlet side. a partition having a groove formed in an end face of the notch; an outer plate fixed to the partition so as to cover the evaporator; and a defrosting heater thermally fitted in the groove of the partition. , a dew pan is rotatably fixed to the partition body via a hinge so as to be rotatable from a normal position for receiving dew from the evaporator and the outer surface plate to a position for releasing the lower surface of the evaporator; A ceiling-mounted cooling device characterized by the following: