JPS6112198B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vortex-type blower having a heat exchange function, in which an impeller is constructed of a corrugated plate, and by making the groove portion of the impeller a part of the vortex passage, the waveform To obtain an extremely efficient heat exchange function through the surface of the corrugated plate by generating different vortices in the annular ventilation passage constructed between the corrugated plate and the casing on both sides of the plate and utilizing the temperature difference between the two sides. The purpose is to

Conventionally, the working fluid in a heat exchanger is generally fed into the heat exchanger by a blower or pump that is separate from the heat exchanger body.
Therefore, different blowers are required for the high temperature side and the low temperature side. Furthermore, because the flow path resistance inside the heat exchanger is large, the pressure of the working fluid after passing through the heat exchanger decreases dramatically, and if the pressure and flow rate after heat exchange are required, a new blower or A pump must be installed, making the device large and complicated in structure.

An example of a conventional general heat exchanger is shown in FIG. 1, in which the working fluid passing through the flow path 2 loses heat from the surface of the cooling fin 1 and its temperature drops. In this case, when the working fluid passes through the flow path 2, it is subjected to large flow resistance because the flow path is narrow, and clogging in the flow path 2 also poses a problem. Similarly, the cooling fluid is susceptible to flow path resistance and clogging between the cooling fins, and the distance between the fins, the pitch of the flow path 2, etc. must be carefully considered before use, and the heat exchange itself There is also a problem.

Furthermore, there are some products that have both heat exchange and air blowing functions (for example, Japanese Patent Publication No. 30-4092), but since they share both functions, either or both functions may be sacrificed. Therefore, in terms of performance, it was inferior to a single heat exchanger or blower.

The present invention solves the above-mentioned conventional problems, and embodiments thereof will be described below with reference to FIGS. 2 to 6. In the figure, 3 is an inner support part having a host part for fixing it to the rotating shaft, and 4 is a plate provided on the outer periphery of the inner supporting part 3 so that the groove part serving as a fluid passage is located radially from the rotating shaft. The blade portion is made of a corrugated plate such as a thin metal plate, and the heat exchange action is mainly performed through the surface of the blade portion. Reference numeral 5 denotes an outer support portion provided on the outer circumference of the blade portion 4, holding the blade portion 4 between it and the inner support portion 3, and separating discharge portions of flows having different temperatures on both sides of the blade portion 4. Further, the inner and outer support portions 3 and 5 are provided approximately at the center of the blade portion 4 in the thickness direction.
The above-mentioned components constitute an impeller of the blower. Reference numeral 6 designates an inner blocking plate provided on the outer periphery of the inner support portion 3 for restricting air flow to the blade portion 4 from only one side of the impeller; 7 indicates an outer blocking plate similarly provided on the outer support portion 5; In the thickness direction of the inner and outer sides of the blade part 4, respectively, the inner support part 3 and the outer support part 5 are bounded, and the part from both support parts to the wave crest part 4c of the blade part 4 has a closed shape. ing. 8 is the flow of air flowing in from one side of the impeller;
9 shows the flow of air flowing in from the other side. 10 is a casing that faces the blade part 4 with a gap in order to form a swirling annular ventilation passage 11 between the impeller, 12 is a bearing for rotationally supporting the rotating shaft 13 that rotates the impeller, and 14 is a casing that faces the blade portion 4 with a gap therebetween; This is the outlet of the blower. Reference numeral 15 indicates the flow of the vortex, and reference numeral 16 indicates the rotation direction of the impeller. 17 is a suction port, 18 is a partition that partitions the annular ventilation passage 11, and the annular ventilation passage 11 is partitioned at this part, and has a starting end 11a and a terminal end 11b.
is formed.

In the above configuration, the impeller is connected to the arrow 16 in FIG.
When the working fluid in the annular ventilation passage 11 is rotated in the direction shown in FIG. The vortex is the third
As shown in FIG. 4, two separate and different flows 8, 9 are produced on both sides. At this time, if a certain temperature difference is provided between the flows 8 and 9 on both sides of the blade part 4, the fluids on both sides exchange heat through the blade part 4 made of a corrugated plate through the surface. In this case, the fifth
As can be seen from the figure, two fluids with different temperatures flow through the grooves on both sides of the corrugated plate constituting the blade section 4, so that the two fluids, one at low temperature and one at high temperature, mutually pass through one corrugated plate of the blade 4. By making the thickness of the corrugated plates sufficiently thin, extremely efficient heat exchange can be achieved. Furthermore, since this blower is a so-called vortex blower, the working fluid forms a swirling flow within the annular ventilation passage 11, and the fluid swirls from the blower suction port 17 to the discharge port 14 while passing through the blade portion 4. Since the fluid flows approximately 360° circumferentially through the grooves of the blade section 4, the number of times the fluid passes through the grooves of the blade section 4 is extremely large, and the heat exchange path, that is, the heat exchange area, is substantially expanded. As a result, heat exchange efficiency can be greatly improved. Moreover, since the vortex blower itself is a blower that generates high pressure at low rotation speeds, there is no need to worry about pressure drop as seen in general heat exchangers, and there is less clogging.

As described above, according to the present invention, the blades of the blower are constructed of corrugated plates, and annular ventilation passages are formed on both sides of the corrugated plates to generate eddy currents, thereby achieving an extremely efficient heat exchange function. In addition to being able to provide high air blowing performance that is characteristic of a vortex blower, there is no need to worry about clogging that often occurs in conventional heat exchangers. Moreover, since both the blower and heat exchanger functions are integrated, it can be made smaller, has a simple structure, and is less likely to break down.
Furthermore, unlike conventional heat exchangers, there is no pressure drop, and on the contrary, it is possible to freely generate a desired discharge pressure, thereby providing an extremely practical heat exchanger.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a conventional general heat exchanger, Fig. 2 is a perspective view showing an example of an impeller of a heat exchange type blower according to the present invention, and Fig. 3 is a perspective view of an example of the impeller of Fig. 2. An axial sectional view, FIG. 4 is a sectional view showing one embodiment of the heat exchange type blower according to the present invention, and FIG.
The figure shows the vortex flow, A is a side view of the impeller,
B is a plan view of A, and FIG. 6 is a sectional view showing the shape of the casing ventilation passage. 3...Inner support part, 4...Blade part, 4c...
... wave crest, 5 ... outer support section, 10 ... casing, 11 ... annular ventilation passage, 11a ... starting end, 11
b...Terminal end, 14...Discharge port, 17...Suction port.

Claims (1)

[Claims] 1. An impeller with blades made of corrugated plates arranged so that the grooves that serve as fluid passages are positioned radially from the rotation axis, and an annular ventilation system that faces the blades of this impeller with a gap to generate vortices. a casing that forms channels on both sides of the impeller, and the impeller includes an inner support part fixed to the rotating shaft and located approximately at the center in the thickness direction of the blade, a blade part on the outer periphery of the inner support part, and a blade part on the outer periphery of the inner support part. and an outer support section located approximately at the center in the thickness direction of the blade like the inner support section, and the inner support section is provided in the thickness direction on the inside and outside of the blade section made of a corrugated plate. The annular ventilation passage has a closed shape from both the support parts to the corrugated top part with the outer support part as the boundary, and furthermore, the annular ventilation passage is partitioned in part by a partition wall to form a start end and a termination end, respectively. A heat exchange type blower equipped with an opening and a discharge opening.