JPS622417Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is an indoor radiator that is composed of a blower and a heat exchanger, and the heat exchanger is placed downstream of the blower, by bending the downstream end of the fins that constitute the heat exchanger. In particular, it relates to an arrangement for changing the direction of the air flow from the blower to the outlet.

Conventionally, this type of indoor radiator has an impeller 2 using a Sirotskov fan inside an exterior 1, as shown in FIG.
and a casing 4 having a bellmouth-shaped inlet 3
A rectangular parallelepiped heat exchanger B is arranged at the outlet 5 of the blower A, and a discharge chamber 6 is provided downstream of the heat exchanger B, and an air supply port 7 and a discharge port provided on the front surface of the exterior 1 are provided. The outlet 8 connects the air supply port 7 to the blower A, the heat exchanger B, and the discharge chamber 6 to the discharge port 8.
It constitutes a ventilation path leading to. Also, heat exchanger B
As shown in FIG.
1 and a pipe 12 for passing hot water, etc. is arranged in a rectangular parallelepiped shape. In addition, in FIG. 1, 10 indicates an electric motor for driving the impeller 2,
In FIGS. 1 and 2, arrows indicate the direction of air flow.

With the above configuration, when the blower A is operated, air is sucked into the exterior 1 from the air supply port 7, and after being changed into warm air etc. in the heat exchanger B,
A flow is formed which is discharged from the discharge port 8 to the outside of the exterior 1 through the discharge chamber 6. However, heat exchanger B is
As shown in FIG. 2, since a large number of rectangular fins 11 are stacked to form a rectangular parallelepiped shape,
The air resistance inside heat exchanger B is almost uniform, so the air flow that flows into heat exchanger B from blower A outlet 5 almost changes its flow direction as it passes through exchanger B. The liquid flows to the discharge chamber 6 without being drained. On the other hand, the direction of the airflow flowing into the discharge chamber 6 is suddenly changed toward the discharge port 8, so that
Significant turbulence occurs in the air flow within the discharge chamber 6, and this turbulence generates noise and
There were disadvantages in that the air resistance inside the fan increased, the load on the blower A increased, and the noise generated from the impeller 2 also increased. In contrast, in the past, the volume within the discharge chamber 6 was increased, or a guide plate 10 having an arcuate cross section was disposed within the discharge chamber 6 as shown in FIG. Methods were taken to suppress sudden changes in airflow as much as possible. However, in the former case, the structure of the indoor radiator becomes large, and in the latter case, a guide plate 10 must be provided, and the effect is not perfect.

In contrast, the present invention bends the cross section of the downstream end of the fins constituting the heat exchanger into an arc shape in the direction of the discharge port, thereby changing the flow direction of air inside the heat exchanger. This is an attempt to resolve the shortcomings. Hereinafter, one embodiment of the present invention will be described in detail using the drawings.

As shown in FIG. 3, the indoor radiator of the present invention has a casing 24 which has an impeller 22 using a Shirodskov fan and a bellmouth-shaped inlet 23 inside the exterior 21.
At the outlet 25 of the blower C, there is a heat exchanger D constructed by laminating a large number of fins formed from thin plates such as aluminum plates.
The air supply port 27 and the discharge port 28 provided on the front side of the air supply port 27 constitute an air passage from the air supply port 27 to the discharge port 28 via the blower C and the heat exchanger D. As shown in the figure, flat linear fins 30 molded from a thin plate of aluminum or the like and turning fins 31 whose downstream ends are bent so as to have an arcuate cross section are alternately used, and the straight fins 30 and turning fins are The turning fins 31 are laminated to have ventilation passages 32 between them, and the downstream end 33 of the turning fins 31 is disposed facing the discharge port 28 . Furthermore, the length of the turning fin 31 from the upstream end to the downstream is configured to be longer as the turning fin 31 is located on the rear side of the heat exchanger D. In addition, in FIG. 4, 33 indicates a pipe for passing hot water, etc., which is arranged to pass through the straight fin 30 and the turning fin 31.
In the figures and FIG. 4, arrows indicate the direction of air flow.

By configuring as above, the blower C
is operated, air flows from the air supply port 27 to the exterior 2.
A flow is formed in which the air is sucked into the interior of the casing 1 , changed into warm air or the like in the heat exchanger D, and then discharged from the outlet 28 to the outside of the exterior 21 . However, as shown in FIG. 4, the heat exchanger D alternates between flat linear fins 30 formed from a thin plate of aluminum or the like and turning fins 31 whose downstream ends are bent so that the cross section is arcuate. and have a ventilation passage 32 between both fins, and the downstream end of the turning fin 31 is connected to the exterior 2.
It is arranged facing the discharge port 28 provided in 1.

Therefore, when the air flow from the blower D outlet 25 to the discharge port 28 passes through the air passage 32 in the heat exchanger D, it flows along the turning fins 31, and in the heat exchanger D toward the discharge port 28. Turn around and start flowing. Therefore, there is almost no turbulence in the airflow on the downstream side of the heat exchanger D, and it is possible to prevent the generation of noise due to turbulence in the airflow. Further conversion Finn 3
1 constitutes the heat exchanger D, so the ventilation path 32
Since the heat transfer area becomes wider relative to the air flow passing through, it is also possible to obtain the advantage of improving heat exchange efficiency.

Furthermore, since an increase in air resistance due to turbulence can be prevented, the load on the blower C can be reduced, and therefore the blower C can be downsized, and the entire device can also be downsized.

Although the present invention has been described with respect to a configuration in which the straight fins 30 and the turning fins 31 are arranged alternately, the same effect can be obtained even if the ratio of the turning fins 31 and the straight fins 30 is changed as necessary. Needless to say, it can be done.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the structure of a conventional indoor radiator, FIG. 2 is a perspective view of a heat exchanger, and FIG. 3 is a sectional view showing the structure of an indoor radiator according to an embodiment of the present invention. FIG. 4 is a perspective view of the heat exchanger as well. C...Blower, D...Heat exchanger, 27...Air supply port, 28...Discharge port, 30...Straight fin, 31
... Turning fin, 32... Ventilation passage.

Claims (1)

[Claims for Utility Model Registration] (1) A heat exchanger made of a large number of laminated fins is disposed downstream of the blower, and the downstream end of the fins is bent to have an arcuate cross section in the direction of the discharge port. An indoor radiator constructed using fins. (2) Utility model registration claim No. 1 in which a heat exchanger configured using straight fins and turning fins is arranged
Indoor radiator described in section. (3) Claim 1 or 2 of the utility model registration in which the length from the upstream end to the downstream end of the turning fin is increased as the position increases toward the rear of the heat exchanger.
Indoor radiator described in section.