JPS6154142B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an indoor radiator that is composed of an air blower and a heat exchanger, and the heat exchanger is arranged downstream of the air blower. It is designed to change the direction of air flow leading to the outlet.

As shown in Fig. 1, a conventional indoor radiator of this kind has an impeller 2 using a Shirotzko fan inside an exterior 1.
and a casing 4 having a bellmouth-shaped inlet 3
A rectangular parallelepiped heat exchanger 7 is disposed at the outlet 6 of the blower 5, and a discharge chamber 8 is provided downstream of the heat exchanger 7. The outlet 10 connects the air supply port 9 to the blower 5, the heat exchanger 7, and the discharge chamber 8 to the outlet 10.
It constitutes a ventilation path leading to. As shown in FIG. 2, the heat exchanger 7 is constructed by stacking a large number of fins 11 made of thin plates such as aluminum plates into a rectangular shape, and a pipe 12 for passing hot water etc. through each fin 11 is arranged to form a rectangular parallelepiped. It is configured. In FIG. 1, reference numeral 13 indicates an electric motor for driving the impeller 2, and in FIGS. 1 and 2, arrows indicate the direction in which air flows. Since the conventional indoor radiator is configured as described above, when the blower 5 is operated, the air supply port 9
Air is sucked into the exterior 1 from the outside, and after being changed into warm air etc. in the heat exchanger 7, it is passed through the discharge chamber 8 to the discharge port 1.
0, a flow is formed that is discharged to the outside of the exterior 1.
However, as shown in FIG. 2, the heat exchanger 7 is configured in a rectangular parallelepiped shape by stacking a large number of rectangular fins 11, so the air resistance inside the heat exchanger 7 is approximately uniform. Therefore, when the air flowing into the heat exchanger 7 from the outlet 6 of the blower 5 passes through the heat exchanger 7, it flows into the discharge chamber 8 with almost no change in flow direction. On the other hand, since the air that has flowed into the discharge chamber 8 is suddenly changed direction toward the discharge port 10, significant turbulence occurs in the air flow within the discharge chamber 8, and this turbulence generates noise and discharge This has disadvantages in that the air resistance within the room 8 increases, the load on the blower 5 increases, and the noise generated from the impeller 2 also increases. Therefore, the volume of the discharge chamber 8 must be increased, or the volume of the discharge chamber 8 must be increased as shown in FIG.
By arranging a guide plate 14 with an arc-shaped cross section inside,
A method has been adopted to suppress rapid changes in air flow within the discharge chamber 8 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 14 must be provided, and the effect is not perfect.

In contrast, the present invention changes the air flow direction inside the heat exchanger by changing the air resistance inside the heat exchanger by changing the length of the air passage inside the heat exchanger. The aim is to solve the drawbacks of the conventional technology. The present invention will be described below based on drawings showing an example of implementation. As shown in FIG. 3, the indoor radiator of the present invention has a blower 2 which is comprised of a casing 24 having an impeller 22 using a Shirotzko fan inside an exterior 21 and a bellmouth-shaped suction port 23.
5, and the outlet 26 of the blower 25 is provided with a heat exchanger 28 constructed by laminating in parallel a large number of fins 27 formed from thin plates such as aluminum plates, and an air supply port 29 provided on the front surface of the exterior 21. And the discharge port 30 connects the air supply port 29 to the blower 25 and the heat exchanger 28.
As shown in FIG. A large number of fins 27 are formed in parallel and are stacked so that air passages 31 are formed between the fins 27, and an inclined surface 32 is formed at the lower end of the front surface of the exchanger 28. . Further, the heat exchanger 28 is disposed with an inclined surface 32 facing the discharge port 30. In the figure, 33 is an electric motor for driving the impeller 22, 34 is a pipe for passing hot water etc. through the fins 27, and arrows indicate the direction in which air flows. Therefore, when the blower 25 is operated, air is sucked into the exterior 21 from the air supply port 29, changed into hot air etc. by the heat exchanger 28, and then discharged to the outside of the exterior 21 from the discharge port 30. is formed. However, as shown in FIG. 4, the heat exchanger 28 is molded so that the length of the fins 27 from the upper end to the lower end of the heat exchanger 28 is longer than the length between the front and rear surfaces. A large number of fins are stacked in parallel to form an inclined surface 32 at the lower end of the front surface.
The length of the ventilation passage 31 that is constructed between the fins 27 and 27 and extends from the upper end to the lower end of the heat exchanger 28 becomes longer from the front to the rear of the heat exchanger 28.
The air resistance in the air passages 31 between them is reduced by the heat exchanger 28.
It becomes larger from the front to the rear.

On the other hand, since air has a tendency to flow in a direction with lower air resistance, the air that flows into the ventilation passage 31 from the upper end of the heat exchanger 28 gradually moves toward the front of the heat exchanger 28 as it passes through the ventilation passage 31. changed direction,
Most of the air flows from the inclined surface 32 toward the discharge port 30 and flows out of the heat exchanger 28 .

As is clear from the above description, according to the present invention, the air flow from the blower outlet to the discharge port is caused by the gradually changing air resistance in the air passage when passing through the air passage in the heat exchanger. Since the flow direction changes gradually, there is almost no turbulence in the airflow. Therefore, there is no generation of noise due to turbulence in the airflow, and there is an advantage that an increase in the load on the blower due to turbulence can be significantly suppressed. Further, since there is no need to provide a guide plate or a discharge chamber downstream of the heat exchanger as in the conventional case, there is an advantage that the indoor radiator can be configured compactly.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the configuration of a conventional indoor radiator, FIG. 2 is a perspective view of a heat exchanger used in the indoor radiator, and FIG. 3 is a configuration of an indoor radiator based on an example of implementation of the present invention. FIG. 4 is a perspective view of a heat exchanger used in the indoor radiator. 21...Exterior, 25...Blower, 26...Outlet, 27...Fin, 28...Heat exchanger, 29...
...Air supply port, 30...Discharge port, 31...Vent passage, 3
2...Slope surface.

Claims (1)

[Claims] 1. A blower and a heat exchanger disposed downstream of the blower are provided, and the air resistance in the air passage between the many fins constituting the heat exchanger is changed to improve the temperature inside the heat exchanger. An indoor radiator that changes the direction of air flowing through the heat exchanger. 2. The indoor radiator according to claim 1, wherein air resistance is changed by changing the length of the air passage between the fins.