JPS60122893A - Heat exchanger type blower - Google Patents

Abstract

PURPOSE:To contrive to improve the heat exchange efficiency and to decrease noise by a method wherein a doughnut type side plate is provided at the one side of blades. CONSTITUTION:In the titled blower, blades 11, a main plate 12, an outer periphery plate 14 and a partition plate 23 are provided, and the doughnut type side plate 16 is attached at the one side of the blades. Drying air 28 heated by a heater 25 and cool air 28' flow side by side interposing a thin plate through groove parts of both side of the blades, and at this time heat is transferred through the blades 11 from the high temperature dry circulating air 28 to the low temperature cool air 28', and the circulating air 28 is cooled, and moisture contained in the air 28 is condensed and turned into water drops and is drained from an outlet 27 and the circulating drying air 28 is dehumidified. The high temperature high humid air 28 leaks from the circulation side to the cooling side, because the tube friction of the circulating air 28 is larger than that of the cool air side, it is possible to keep the leakage of the high temperature high humid air 28 from the circulating side to the cooling side at minimum by providing the area 16 at the cool side blades 11.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention has a blade made of a corrugated thin plate, and has a function of blowing air at different temperatures on both sides of the blade, and at the same time, has a function of blowing air at different temperatures through the blade surface. The present invention relates to a heat exchange type blower that can exchange heat between air having different temperatures.

(Conventional configuration and its problems) Figure 1 shows the inside part of a conventional heat exchange type blower.
'1 is a blade composed of a corrugated thin plate made of stainless steel, aluminum, resin, etc., and 2 is a blade 3 that supports the blade 1 from the rotation center side and fixes the impeller to the rotation shaft.
The main plate has a

Reference numeral 4 denotes a substantially ring-shaped outer circumferential plate that supports the blade 1 together with the main plate 2 from the outer circumferential direction, and a substantially ring-shaped flexible sealing material 5 is fixed to this outer circumferential plate 4 .

Figure 2 shows a schematic cross-sectional structure of the impeller incorporated into a casing, where 6 is a partition plate that separates the air flow on both sides of the blade 10, and 7 and 8 are fan cases that guide the air flow on each side. . Furthermore, if one side, for example, the air flow is 9, and the other side, for example, the air flow is 10, the air flows 9 and 10 will exchange heat via the blades 1 as the impeller rotates. Become.

Conventionally, when the loads on the A side and the B side are different, for example, load on the A side>load on the B side, the relationship between the pressure PA on the A side and the pressure PB on the B side is pA as shown in Figure 3. ) p. Therefore, the pressure difference (PA>
PB) causes air leakage, which has the drawback of reducing the heat exchange efficiency of air flow 9 and air flow 10.

(Object of the Invention) An object of the present invention is to provide a heat exchange type blower that eliminates the conventional drawbacks and improves heat exchange efficiency.

(Structure of the Invention) The heat exchange type blower of the present invention includes a blade, a main plate, an outer peripheral plate, and a partition plate, and a donut-shaped side plate is attached to one side of the blade. By providing the side plate on the side with a larger load on both sides, the pressure difference between the two sides can be reduced, leakage from the gap between the outer circumferential plate and the partition plate can be reduced, and heat exchange efficiency can be increased.

(Description of Embodiment) An embodiment of the present invention will be described based on FIGS. 4 to 6.

Fig. 4 shows the impeller part of a heat exchange type blower, 11 is a grade made of corrugated thin plate made of stainless steel, aluminum, resin, etc., 12 supports the blade 11 from the rotation center side, and the impeller is attached to the rotation axis. Fixed post 1
This is the main plate having 3.

Reference numeral 14 denotes a substantially ring-shaped outer circumferential plate that supports the blade 11 together with the main plate 12 from the outer circumferential direction.A substantially ring-shaped flexible sealing material 15 is fixed to this outer circumferential plate 14. Also,
A substantially donut-shaped side plate 16 is attached to one side of the blade 110.

FIG. 5 shows a cross-sectional structure of a clothes dryer incorporating the above-mentioned inner bag, where 17 is an outer frame of the dryer, 18 is a drum rotatably installed inside the outer frame 17, and 19 is a clothes dryer inside the drum 18. 20 is the impeller shown in FIG. 4, 21 is the rotating shaft for rotating the impeller 20, and the main plate 1
It is fixed to the boss 13 of No. 2. 22 is the impeller 20
A casing 23 that encloses the impeller 200 and forms a ventilation passage is a partition plate that partitions the airflow on both sides of the impeller 200 into ventilation passages, and is located in the outer circumferential direction of the outer peripheral plate 14. 24 is a duct that guides hot and humid drying circulating air, and a heater 25 is installed in the middle.
has been established. 26 is a duct for exhausting the intake cooling air. Reference numeral 27 indicates an outlet for discharging dehumidified water to the outside of the machine, and 28 and 28' indicate flows of drying circulating air and cooling air, respectively.

In the above configuration, when the power is turned on, the motor (not shown) is rotated, and the impeller 20 is rotated by this rotational force,
Two different air flows on both sides of the impeller 200, i.e.
A flow of circulating air 28 and cooling air 28' is generated. The drying circulating air 28 is heated by the heater 25 and then transferred to the drum 1.
8, and after heating the clothes in the drum 1B, it moves along one side of the impeller 20, and again heads toward the heater 25 via the duct 24. Cooling air 28' is drawn in from outside the machine, travels along the other side of the impeller 20, and exits the machine again via the duct 26. Then, both air flows side by side through the grooves on both sides of the blade 11 with one thin plate in between, and at this time, the high temperature drying circulating air 28 flows into the low temperature cooling air 28' via the blade 11. The heat is transferred, the circulating air 28 is cooled, the moisture contained therein condenses into water droplets, and is drained through the drain port 27, and the drying circulating air 28 is dehumidified. The dehumidified drying circulating air 28 passes through a ventilation path composed of an impeller 20, a casing 22, and a partition plate 23, passes through a circulation duct 24, and passes through a heater 25), where it is heated and heated to the drum 18.
Perform the cycle of returning. On the other hand, the cooling air 28' is sucked in from outside the machine, enters the impeller 20, cools the drying circulating air 28, and is exhausted from the exhaust duct 26 to the outside of the machine. The pipe friction is larger than the pipe friction on the cooling air side, so if the circulating and cooling sides have the same blade shape as shown in Figure 6, the pressures on the circulating and cooling sides will be p, > pb. However, hot and humid air 28 will leak from the circulation side to the cooling side.
By providing the side plate 16 on the cooling side blade 11), the cooling side P-Q curve moves upward, and the pressure Pb becomes Pa
High temperature and humid air from the circulation side to the cooling side matches or approaches 2.
8 leakage can be kept to a minimum. Therefore, the above configuration improves the heat exchange efficiency of the heat exchange type blower. Furthermore, the blade 11 on the cooling side is attached to the side plate 16.
This can also contribute to the reduction of wind noise.

(Effects of the Invention) The heat exchange type blower according to the present invention has the effect of improving heat exchange efficiency and reducing noise by providing a substantially donut-shaped side surface on one side of the blade.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the impeller of a conventional heat exchange type blower, Fig. 2 is a cross-sectional view of a casing blower incorporating the blower, Fig. 3 is the P-Q characteristic curve of the blower, and Fig. 4 teeth,
FIG. 5 is a cross-sectional view of a clothes dryer incorporating the same blower, and FIG. 6 is a P-Q characteristic curve of the same clothes dryer. be. 1.11...Blade, 2,12...Main plate, 3,1
3...Boss, 4.14...Outer peripheral plate, 5,15...
Flexible sealing material, 6... Partition plate, 7, 8... Fan case, 9.10... Air flow, 16... Side plate,
17...Dryer outer frame, 18...Drum, 19...
Door, 20... Impeller, 21... Rotating shaft, 22.
...Kaizong, 23...Partition plate, 24.26...
Duct, 25... Heater, 27... Discharge port, 28.
28'...Air flow. Figure 1 Figure 2 Figure 3 Pl Figure 4 Figure 5 Figure 7

Claims (1)

[Claims] a blade made of a corrugated thin plate provided on the outer periphery of the main plate so that the groove portion is positioned radially from the rotation center axis; an outer circumferential plate supporting the outer circumferential portion of the blade; A heat exchange type blower comprising a fixed partition plate that separates two types of airflow flowing through grooves on both sides of the blade, and a donut-shaped side plate attached to one side of the blade.