JPH0222625Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a cooling device having a hot gas or electric heater type defrost mechanism.

A conventional cooling device was constructed as shown in FIGS. 1 and 2. In other words, 1 is an evaporator of the refrigeration cycle installed inside the refrigerator, 2 is a dish-shaped drain receiver that receives drain water from the evaporator 1 below, and 3 is a rod-shaped coil that heats the drain receiver 2. The evaporator 1 is connected to a discharge port (not shown) of the evaporator. Reference numeral 4 designates a holding plate for fixing the linear portion 3a of the heating coil 3 to the outer bottom surface of the drain receiver 2 with screws 5 so as to make it tightly contact with the bottom outer surface of the drain receiver 2. 6 is a mounting plate for fixing the evaporator 1, drain receiver 2, and blower 7.
As shown in FIG. 2, the heating coil 3 was fixed to the drain receiver 2 by a plurality of holding plates 4 provided below the drain receiver 2 at equal intervals. In the cooling device configured in this way, the third
As shown in the figure, if the heating coil 3 is not straight, the contact with the drain receiver 2 may be point contact at points A, B, and C, and sufficient heat may not be transferred to the drain receiver 2. It was hot. During defrosting, drain water from the evaporator 1 is received by the drain receiver 2 and discharged outside the refrigerator, but the surface tension of the drain water
If the ice remained inside, it would freeze during the cooling operation, and if the ice could not be completely melted during the next defrost operation, there was a risk that the ice would grow. Furthermore, during defrosting, frost that cannot be separated may fall from the evaporator 1, and if sufficient heat is not transferred to the drain receiver 2, there is a risk of residual frost. Alternatively, as shown in FIGS. 4 and 5, there is a method of fixing the heating coil 3 with a U-shaped saddle 8 having a flange portion 8a and a coil holding portion 8b. In this case, as shown in FIG. 6, the drain receiver 2 and the heating coil 3 are in line contact at the D part, and heat is also transmitted from the contact area between the heating coil 3 and the saddle 8, so the drain receiver 2 Sufficient heat is provided. However, if the water droplets 9 entered the gap between the drain receiver 2, the heating coil 3, and the saddle 8, the water droplets 9 would freeze during the cooling operation and increase in volume, which could damage the heating coil 3. .

This invention was developed in consideration of the above-mentioned circumstances, and aims to provide a cooling device that can supply sufficient heat to the drain receiver and not damage the heating coil.

An embodiment of this invention will be described below based on the drawings. 7 and 8, reference numeral 10 denotes a saddle corresponding to the holding plate 4 and the saddle 8, which includes a flange portion 10a that is attached in surface contact with the bottom outer surface of the drain receiver 2, and a lower half of the heating coil 3. A cross section U attached to the circular portion and holding the heating coil 3 in line contact with the bottom outer surface of the drain receiver 2
It consists of a letter-shaped coil holding part 10b, and is provided below the drain receiver 2. Among these, the coil holding portion 10b is provided with a plurality of through holes 10c. The saddle 10 extends over substantially the entire length of the straight portion 3a of the heating coil 3. The heating coil 3 is attached to the bottom outer surface of the drain receiver 2 in close contact with the saddle 10. By doing this, the contact between the heating coil 3 and the drain receiver 2 is improved as described above, and water droplets enter the gap between the drain receiver 2, the heating coil 3, and the saddle 10 and freeze during the cooling operation, causing the volume to decrease. Even if the heating coil 3 is increased, there is no risk of damaging the heating coil 3 because the coil holding portion 10b of the saddle 10 has a through hole 10c for pressure relief.

In the above embodiment, a method of holding down a heating coil for hot gas defrosting has been described, but the present invention can also be applied to the case of holding down an electric heater.

As described above, in this invention, the heating coil is fixed to the drain receiver with a saddle that has a plurality of through holes in the coil holding part that holds the heating coil in line contact with the outer surface of the bottom of the drain receiver. Sufficient heat can be supplied to the drain receiver, and the heating coil will not be damaged even if water droplets enter the coil holding part of the saddle and freeze.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram of a conventional cooling device, Figs. 2 and 3 are a bottom view and a front view of a drain receiving section, and Figs. 4a and b are a bottom view and a front view of a saddle in another conventional embodiment. 5 is a bottom view of the drain receiver, FIG. 6 is a partially enlarged sectional view of the drain receiver, and FIGS. 7a and 7b are bottom and side views of a saddle showing an embodiment of this invention. , 8th
The figure is also a bottom view of the drain receiving section. In addition,
The same reference numerals in the figures indicate the same or corresponding parts. In the figure, 1 is an evaporator, 2 is a drain receiver, 3 is a heating coil, 10 is a saddle, 10a is a flange part, 1
0b is a coil holding portion, and 10c is a hole.

Claims (1)

[Scope of utility model registration request] a dish-shaped drain receiver provided below the evaporator to receive drain water from the evaporator; a coil provided below the drain receiver to heat the drain receiver;
a saddle for fixing the coil to the outer bottom surface of the drain receiver; a coil holding portion having a U-shaped cross section that holds the coil in line contact with the outer bottom surface of the drain receiver; a flange portion which is attached in surface contact with the outer surface of the bottom of the cooling device, and a coil holding portion of the flange portion is provided with a plurality of through holes.