JPH05157479A - Fin and tube type heat exchanger - Google Patents

Abstract

PURPOSE:To prevent a decrease in performance due to frosting in a fin and tube type heat exchanger to be used for a heat pump air conditioner, etc. CONSTITUTION:This heat exchanger comprises many fins 13 disposed at a predetermined interval in equilibrium, and a tube 12 inserted perpendicularly to the fins 13 and in which fluid flows therein in such a manner that a ceramic rod for generating an infrared ray is inserted perpendicularly to the fins 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fin and tube type heat exchanger used for heat pump air conditioners and the like.

[0002]

2. Description of the Related Art Fin-and-tube heat exchangers used in heat pump air conditioners, etc., are coated on the surface to improve the drainage of condensed water or to change the shape in order to avoid performance deterioration due to frost formation. , The device is designed so that the performance does not deteriorate even after frost formation.

A conventional example (Japanese Patent Publication No. 62-25958) will be described below with reference to FIGS.

FIG. 3 is a perspective view of the fin-and-tube heat exchanger, and FIG. 4 is a plan view of the fin. As shown in FIGS. 3 and 4, the conventional fin-and-tube heat exchanger 1 expands a tube 2 through which a fluid flows,
Holes 4 of a large number of fins 3 arranged in parallel at regular intervals
It has a structure in which the outer circumference of the tube is closely attached. The material of the fin 3 in the fin plan view shown in FIG. 4 is a single metal.

[0005]

However, in the above-mentioned conventional method, there is a problem that the air passage is blocked by the frost on the fins 3 and the heat exchange performance is deteriorated due to the blockage.

The present invention is intended to solve the above problems, and to reduce the amount of frost and prevent the performance of the heat exchanger from being degraded.

[0007]

In order to achieve this object, the heat exchanger of the present invention has a large number of fins arranged in equilibrium at regular intervals, and the fins are inserted vertically into the fins so that the fluid flows inside. In this case, a ceramic rod that emits infrared rays is vertically inserted into the fin.

The heat exchanger is composed of a large number of fins arranged in equilibrium at regular intervals, and tubes inserted vertically into the fins and through which fluid flows, and infrared rays are provided at the ends of the fins. It is the one to which the ceramic that generates is attached.

[0009]

With this construction, the insertion of the ceramic rod that emits infrared rays does not increase the air resistance, and
The adhesion of ceramics that generate infrared rays to the end of the fin is
Since it adheres to the fin itself where frost forms, the condensed water on the surface of the heat exchanger can be more effectively activated by the far-infrared effect, and the deterioration of heat exchange performance due to frost formation can be prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a fin and tube heat exchanger 1
1 is a perspective view, and FIG. 2 is a plan view of the fin 13.

As shown in the figure, the heat exchanger 11 of the present invention is a fin-and-tube type, and a tube 12 perpendicular to the fins, and an alumina-based ceramic which generates infrared rays having a wavelength of, for example, about 2.5 to 3.0 μm. The rod 15 is inserted, and a similar ceramic 16 is attached to the end of the fin 13.

The low-temperature fluid flows through the tubes 12 of the fin-and-tube heat exchanger 11 so that the low-temperature fluid and the air exchange heat via the fins and the tubes.

In this embodiment, water vapor molecules in the air are activated by the far infrared effect of the ceramic 16 attached to the ends of the ceramic rods 15 and fins 13, so that the condensate on the surface of the heat exchanger is solidified. As a result, the amount of frost formation can be reduced, and the deterioration of heat exchange performance due to frost formation can be prevented.

[0015]

INDUSTRIAL APPLICABILITY As described above, the present invention is a fin-and-tube type which is composed of a large number of fins arranged in equilibrium at regular intervals and tubes inserted vertically into the fins and through which fluid flows. A ceramic rod that emits infrared rays is vertically inserted into the heat exchanger in the fins, and by attaching ceramics that emit infrared rays to the ends of the fins, condensed water is activated by the far infrared ray effect of the ceramics. Therefore, the condensed liquid of the fins is less likely to solidify, the amount of frost can be reduced, and the heat exchange performance can be prevented from deteriorating due to frost.

[Brief description of drawings]

FIG. 1 is a perspective view of a fin-and-tube heat exchanger according to an embodiment of the present invention.

FIG. 2 is a plan view of a fin according to an embodiment of the present invention.

FIG. 3 is a perspective view of a conventional fin-and-tube heat exchanger.

FIG. 4 is a plan view of a conventional fin.

[Explanation of symbols] 11 heat exchanger 12 tube 13 fin 15 ceramic rod 16 ceramic

Claims (2)

[Claims] 1. A ceramic rod for emitting infrared rays, which is composed of a plurality of fins arranged in equilibrium at regular intervals and a tube vertically inserted into the fin and through which a fluid flows, perpendicular to the fin. A fin-and-tube type heat exchanger characterized by being inserted into the. 2. A ceramic which is composed of a large number of fins arranged in equilibrium at regular intervals and a tube which is vertically inserted into the fins and through which a fluid flows, the infrared ray-generating ceramic being provided at the end portions of the fins. A fin-and-tube heat exchanger characterized by adhesion.