JPH037874A - Freezing device - Google Patents

Abstract

PURPOSE:To perform excellent defrosting and disposal of dew by a method wherein the lower end of a dew collecting part is positioned between a dew pan part and a body case, and a fan guide is secured to a body case in a manner that a guard body is protruded outwardly of a blast device. CONSTITUTION:A fan guard 6 is formed such that a guard body 23, a dew collecting part 24 mounted to the lower part 23A of the guard body 23 and projected further downward than the guard body 23, and a heater 25 for defrosting brought into contact with longitudinal and lateral beams 20 and 21 of the guard body and a part of which is arranged in contact with the dew collecting part 24 or in a manner to approach the dew collecting part are integrally formed. The lower end 24A of the dew collecting part 24 is positioned between a dew pan 7 and a body case 2, and the fan guard 6 is fixed to the front of the body case 2 in a manner that it is protruded further outwardly than a blast device 5 positioned on the discharge port 2A side. The dew collecting part 24 is formed such that the other end, i.e., the upper end, of the dew collecting part 24 is positioned in a level higher than that of the lower end of the fan of a blast device 5 when the fan guard 6 is mounted to the body case 2. This constitution provides a freezing device which effects excellent defrosting and disposal of dew.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] Industrial Field of Application The present invention relates to an improvement in the structure of a fan guard attached to a refrigeration device used in a low-temperature storage such as a prefabricated freezer.

Conventional technology Conventionally, this type of refrigeration equipment has a blower device for blowing air into the cooler, and usually a fan guard is installed at the opening where the blower device is installed to prevent foreign matter from entering the blower device. It is installed. As the cooling operation of this refrigeration system continues, frost builds up not only on the cooler but also on the blower and fan guard, reducing the heat exchange efficiency of the cooler and the air blowing efficiency of the blower, reducing the cooling efficiency of the refrigeration system. Therefore, a defrosting device is installed. For example, Japanese Utility Model Publication No. 53-140105 discloses a fan cover in which part or all of the fan cover is formed of a tube containing a heating wire. Also, ■Jikko 58
Japanese Patent No. 10953 discloses a device in which a heating element is attached to a fan guard. Furthermore, ■Jikko 48-
Japanese Patent No. 6390 discloses a device in which a fan casing is extended so as to protrude beyond a fan grille so that dew that falls from the fan grille is drained away.

Problems to be Solved by the Invention In the techniques disclosed in (1) and (2) above, there is nothing to catch the dew that falls from the fan guard, so the dew falls below the fan and the objects below ( For example, there is a risk of electrical leakage due to the accumulation of dirt such as dust and dust on the floor (for example, the floor) and contact with surrounding electrical components, so measures such as extending the condensation pan to the bottom of the fan guard were necessary. Also ■
In the technology disclosed in , the fan casing and the fan grill are separate bodies, and each must be fixed in an orderly manner, which poses the problem of making the fixing work troublesome. Was. Furthermore, since the fan grill is defrosted using transferred heat or radiant heat from the casing heater, there is a problem in that the amount of heat is insufficient and it takes time to defrost the fan grill.

Therefore, it is an object of the present invention to provide a refrigeration system equipped with a fan guard that can effectively perform defrosting and dew treatment.

[Structure of the Invention] The present invention provides a refrigeration device in which a cooler and a blower are housed inside a main body case having an air outlet on the front and a suction port on the back, and a condensation tray is provided at the bottom. There is a guard body that is made up of a combination of multiple wire rods and covers the air outlet, and a guard body that is provided at the bottom of the guard body so as to close off from the outside at least the part that will be located at the bottom when the guard body is installed, and the lower end is lower than the guard body. The fan guard has a dew pan projecting downward and a heater that is provided on the guard body and heats the dew pan with a part of the fan guard, and the lower end of the dew pan is connected to the dew pan and the main body case. The fan guard is fixed to the main body case, with the guard main body protruding outward from the blower device located on the blower outlet side.

Function: Since the part of the heater placed in contact with the guard body heats the dew pan at the bottom of the guard body, the heater heats both the guard body and the dew pan at the same time during defrosting. It acts like this. In addition, since the dew receiving part is attached to the bottom of the guard body, the dew receiving part will stop the condensation of the guard body due to heating by the heater or the melted flakes of ice from the guard body. The ice chips are further heated to melt them and promote their movement to the dew pan, so that the ice chips and dew remain on the dew pan.Meanwhile, the lower end of the dew pan is connected between the main body case and the dew pan. Since it is located between the fan guard and the fan tray, this dew tray acts as a dew guide section that guides the dew received from the guard body from the fan guard to the dew tray.

EXAMPLES Examples of the present invention will be described below with reference to FIGS. 1 to 3.

1 is a cooling device that is hung on the ceiling wall of a large refrigerator-freezer such as a prefabricated refrigerator, and the main body case 2 is made of a corrosion-resistant metal such as an embossed aluminum plate. and a hanging device 3 for fixing the cooling device 1 to the ceiling wall (hereinafter referred to as an air outlet 2A, an inlet 2B, and a lower surface opening 2C, respectively).
is provided in this main body case 2.

In addition, the cooler 4 is arranged inside the main body case 2 so that its air suction side is located at the suction port 2B, and the air outlet 2
A is provided with a blower device 5 for circulating cold air. Furthermore, a fan guard 6 is attached to the air outlet 2A to prevent foreign objects such as fingers and dirt from entering. Further, the lower opening 2C of the main body case 2 is covered with a dew pan 7, which is attached to the main body case 2 so as to be openable and closable by an appropriate opening/closing device (not shown).

The dew pan 7 is located directly below the cooler 4, and is made of a corrosion-resistant metal such as an embossed aluminum plate, and is designed to absorb dew and ice chips that fall from the cooler 4 during defrosting, as well as the main body. This is the one that receives the dew from Case 2. A drain port 8 for draining water and a drain pipe portion 9 connected to the drain l:+8 are provided at appropriate locations. l
O is a flexible water pipe whose one end side is connected to the drain pipe portion 9 of the dew pan 7 and is fastened and fixed with a clip 11 consisting of annular wires in two stages, upper and lower.

The fan guard 6 consists of a plurality of vertical and horizontal bars 20 and 21, which are formed into a substantially U-shape by bending metal wire rods such as wires with anti-corrosion treatment applied to the surface of the iron wire, and the wire rods are bent into a rectangular ring shape. A guard main body 23 is formed into a container shape by combining with a frame material 22, and a guard main body 23 is provided at the lower part of the guard main body 23 in such a manner that the bottom portion thereof is closed from the outside when installed, and the guard main body 23 is inclined downwardly toward one end. The lower end 24A is made of a metal plate or the like that has been subjected to corrosion-proofing treatment on the surface of the iron plate, and the lower end 24A protrudes below the guard body 23. The lower end 24A is brought into contact with the vertical and horizontal bars 20. A defrosting heater 25 such as a pipe-shaped heater whose portion is placed in contact with or close to the dew receiving portion 24 is integrally constructed.

Then, the fan guard 6 is positioned so that the lower end 24A of the dew pan 24 is located between the dew pan 7 and the main body case 2, and protrudes outward beyond the blower device 5 located on the side of the air outlet 2A. It is fixed to the front of the main case 2.

The exposure portion 24 is formed such that when the fan guard 6 is attached to the main body case 2, the other end, that is, the upper end of the exposure portion 24 is located above the lower end of the fan of the blower device 5.

Further, a fixing portion 26 for fixing to the main body case 2 is formed at the tip of the horizontal bar 21 of the guard main body 23.

Based on the above configuration, the main body case 2 of 7 Unguard 6
To explain how to assemble the guard body 23, the dew receiving part 2
4 and a fan guard 6 integrally configured with a heater 25
The lower end 24A of the dew receiving portion 24 may be located between the main body case 2 and the dew receiving pan 7, and the fixing portion 26 of the guard main body 23 may be fixed to the front surface of the main body case 2 with a fixing member 27 such as a screw.

Therefore, the fan guard 6 can be removed very easily, and the guard main body 23 and the dew receiving part 24 are configured in one piece, so that the defrosting heater 25 can be removed from the guard main body 23 and the dew receiving part 24. The guard body 23 and the exposed portion 24 can be positioned so as to be in contact with each other, and there is no need to provide separate heaters for the guard body 23 and the exposed portion 24, thereby reducing the number of parts and the power required for the heater. In addition, the guard body 23
The dew that drips down is reliably received by the dew receiving part 24,
The dew can be guided to the dew receiving tray 7 of the main body case 2, and can prevent dew from falling below the refrigeration device 1.

[Effects of the Invention] As detailed above, according to the present invention, the dew dripping down the guard body can be reliably received by the dew pan and guided from the lower end of the dew pan to the dew pan of the main body case. This prevents dew from falling below the refrigeration equipment. In addition, by integrally configuring the guard body and the dew pan, a defrosting heater can be placed in contact with both the guard body and the dew pan. The device (especially the fan) as well as the dew pan can be heated. Moreover, by attaching the fan guard, the dew receiving portion can be fixed at the same time, and the fixing work can be performed with great ease.

[Brief explanation of drawings]

Each figure shows one embodiment of the present invention. Figure 1 is an external perspective view of the refrigeration system seen from the front side, Figure 2 is a sectional view taken along line A-A in Figure 1, and Figure 3 shows how the fan guard is installed. It is a sectional view for explanation. 1... Refrigeration device, 2... Main body case, 5...
・Blower device, 6...Fan guard, 7...
Dew pan, 23...Guard body, 24...Dew pan,
25... Heater for defrosting.

Claims (1)

[Claims] 1. In a refrigeration device in which a cooler and a blower are housed inside a main body case in which an air outlet and a suction opening are formed, and a dew pan is arranged at the bottom, the air outlet is covered with a refrigeration device that is constructed by combining a plurality of wires. a guard body, an exposure part provided at the lower part of the guard body and whose lower end protrudes below the guard body so as to close the part that becomes the bottom part when installed; The fan guard is provided with a heater that heats the dew pan, and the fan guard is fixed such that the lower end of the dew pan is positioned between the dew pan and the main body case. refrigeration equipment.