JPS6198995A - Heat exchange type blower - Google Patents

Abstract

PURPOSE:To obtain stable blowing power and heat exchange efficiency, by providing a rib, continued from a blade, in a main plate in a cooling side and preventing the blade from easily causing its deformation due to a temperature difference between both sides of the blade. CONSTITUTION:If an impeller 20 is rotated, the impeller 20 generates in its both sides two different air streams, that is, a flow of circulating air (c) and cooling air (d). The circulating air (c) for drying, after it is heated by a heater 25, is allowed to flow into a drum 18, and the air (c), after it heats clothing in the drum 18, moves along one side of the impeller 20 again toward a direction of the heater 25 through a duct 24. The cooling air (d), being sucked from the outside of a machine, moves along the other side of the impeller 20 flowing to the outside of the machine through a duct 26. Here the machine, providing a rib 16 continued from a blade 10 in a main plate 11 in the cooling side, prevents the blade 10 from easily generating its deformation due to a difference between temperatures in the both sides of the blade 10. As the result, the machine, reducing also the friction of a sealing material 14 with a sliding material 15 while increasing a blowing quantity of air in the cooling side by the rib 16, also improves heat exchange efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention has a blade made of a corrugated thin plate, and has the function of blowing air at different temperatures on both sides of the blade, and at the same time, is capable of blowing air at different temperatures through the blade surface. This invention relates to a heat exchange type blower that can also exchange heat between different types of air.

Configuration of conventional example and its problems Figure 1 shows the entire impeller part of a conventional heat exchange type blower.
1 is a blade made of a corrugated thin plate of stainless steel, aluminum + m ++ T4, etc.; 2:'; 1. This is a main plate that supports the plate '1 from the rotation center side and has a boss 3 for fixing the impeller to the rotation shaft. A flexible sealing material 5 having a substantially ring shape and a substantially ■-shaped cross section is fixed thereto.

FIG. 2 shows a schematic cross-sectional structure in which the above-mentioned impeller is assembled into cage rings 6 and 7, in which a partition plate separates the air flow on both sides of the BI/i blade 10, and 9 is a sliding material on which the sealing material 5 slides. be. A li] l+ air flow a, B111
Assuming that the air flow is b, the air flows a and b exchange heat through the blades 1 as the impeller rotates.

Assuming that the temperature of the trench and the air flow a is higher than the temperature of the air flow b, in the above configuration, the temperature difference between the two sides of the blade 1 causes deformation as shown in FIG. Only one side comes into contact with the sliding material 9, which affects the durability of the sealing material 5, and also impedes the rotation of the impeller, resulting in poor air flow and heat exchange efficiency. there were.

OBJECTS OF THE INVENTION The present invention solves these conventional problems and provides a heat exchange type blower that improves the blowing force and the heat exchange efficiency.

Composition of the Invention The heat exchange type blower of the present invention has a main plate, a blade, an outer peripheral plate, and a partition plate, and one side of the main plate is provided with a rib extending continuously from the blade. , which prevents the blade from deforming and improves the power of the blowing force and the heat exchange efficiency.

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

FIG. 4 shows the impeller portion of the heat exchange type blower of this embodiment, and 10 is stainless steel and aluminum.

A blade 11 made of a corrugated thin plate made of resin or the like is a main plate having a boss 12 for supporting and fixing the blade 1o from the rotation center side. Reference numeral 13 denotes an outer peripheral plate that supports the blade 10 together with the main plate 11 and separates airflow.

14 is approximately ring-shaped fixed to the outer periphery of the outer peripheral plate 13 and is approximately ■
This is a flexible sealing material with a letter-shaped cross section. 15 is a sliding material on which the sealing material 14 slides. 16 is blade 10
This is a rib extending from the main plate 11.

FIG. 6 shows a schematic cross-sectional structure of a clothes dryer incorporating the above-mentioned impeller, in which 17 is the main body of the dryer, 18 is a drum rotatably installed in the main body 17, and 19 is a drum for putting clothes into the drum 18. 20 is the impeller shown in Figure 4,
Reference numeral 21 denotes a rotating shaft for rotating the impeller 20, which is fixed to the boss 12 of the main plate 11. 22 is a casing that encloses the impeller 2o and forms a ventilation passage, and 23 is a partition plate that partitions the air flow on both sides of the impeller 200 from the ventilation passage portion, and is located in the outer circumferential direction of the outer peripheral plate 13. 24 is a duct for guiding hot and humid drying circulating air, and a heater 25 is provided in the middle.

26 is a duct for exhausting the intake cooling air. c and d indicate the flows of drying circulating air and cooling air, respectively.

2A is a drain port for discharging dehumidified water to the outside of the machine.

In the above configuration, when the power is turned on and the motor (not shown) is rotated, and the impeller 20 is rotated by this rotational force,
Two different air flows occur on both sides of the impeller 200, namely, circulating air C1 and cooling air d. The drying circulating air C enters the drum 18 after being heated by the heater 25,
After heating the clothes in the drum 18, the drum moves along one side of the impeller 2o and is heated again to the heater 26 via the duct 24.
The cooling air d directed in the direction is drawn in from outside the aircraft, travels along the other side of the impeller 20, and exits the aircraft again via the duct 26. Then, both air flows through the grooves on both sides of the blade 1o, and at this time, heat is transferred from the humid drying circulating air C to the low temperature cooling air d via the blade 10, and the circulating air C is cooled. The water contained therein condenses into water droplets and drains out of the drain port 27, and the drying circulating air C is dehumidified. Dehumidified drying circulating air C
The air passes through a ventilation path composed of an impeller 20, a casing 22, and a partition plate 23, passes through a reheater 26 portion of a circulation duct 24, is heated there, and returns to the drum 18, thereby performing a circulation. On the other hand, the cooling air d is taken in from outside the machine, enters the inopeller 20, cools the drying circulation air cf, and is exhausted to the outside of the machine from the exhaust duct 26.

By providing the ribs 16 on the main plate 11 on the cooling side (D side), the blade 10 is less likely to be deformed due to the temperature difference between C1ll and Dll as shown in FIG. The friction with 16 is very strong. In addition, cooling 1jl+1 (D
111+1), the amount of air blown increases, and the heat exchange efficiency also improves.

Effects of the Invention As is clear from the above embodiments, the heat exchange type blower of the present invention has a rib that is continuous with the blades on one side of the main plate, so that deformation due to temperature differences between the two sides of the plate is difficult to occur and it is stable. It is possible to obtain high blowing force and heat exchange efficiency.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of an impeller of a conventional heat exchange type blower, Fig. 2 is a schematic vertical sectional view of the impeller assembled into a casing, Fig. 3 is an enlarged sectional view of the same essential parts, and Fig. 4 6 is a longitudinal sectional view of a clothes dryer incorporating the impeller, and FIG. 6 is an enlarged sectional view of the impeller portion. 10...Blade, 11...Main plate, 1
4...Sealing material, 16...Sliding material, 16...
·rib. Name of agent: Patent attorney Toshio Nakao and 1 other person
Figure 2 Figure 3 Figure 4 Figure II Figure 5

Claims (1)

[Claims] A blade made of a corrugated thin plate with grooves arranged radially, a main plate that supports the inner peripheral part of the blade, an outer peripheral plate that supports the outer peripheral part of the blade, and a blade arranged on the outer periphery of the outer peripheral plate. A heat exchange type blower comprising a cutting plate that separates two types of airflow flowing through grooves on both sides of the blade, and a rib continuous from the blade on one side of the main plate.