JPH0652156B2 - Heat exchange type blower - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange type blower that performs heat exchange by the temperature difference between different working fluids.

2. Description of the Related Art Conventionally, a heat exchange type blower of this type is disclosed in, for example, Japanese Patent Laid-Open No. 57-
As shown in Japanese Patent No. 47187, the structure is as shown in FIGS. 3 and 4.

In FIGS. 3 and 4, 1 is an inner plate having a boss portion for fixing to a rotary shaft, and 2 is a disc-shaped impeller made of corrugated thin plates provided on the outer periphery of the inner plate 1. ,
The heat exchange action is mainly performed by this impeller. An outer peripheral member 3 is provided on the outer peripheral portion of the impeller 2, holds the impeller 2 portion with the inner side plate 1 and separates different flows on both sides of the impeller 2. Reference numeral 4 indicates the rotation direction of the impeller 2. FIG. 4 shows an air blower incorporating the heat exchange type impeller of FIG. 3, and 5 limits the air flow to the impeller 2 provided on the outer peripheral portion of the inner side plate 1 from only one surface. The inner closing member closes the opening of the corrugated inner peripheral end of the plurality of groove portions 9 and 10 arranged so as to be located radially around the rotation axis. An outer closing member 6 is provided on the outer peripheral member 3, and closes the openings of the outer peripheral ends of the groove portions 9 and 10. Further, 7 is the flow of the inflowing air from the groove portion on one surface of the impeller 2, and 8 is the groove portion 1 on the other surface.
It shows the flow of incoming air from zero. Reference numeral 11 is a partition plate that completely separates the air flow on both sides of the blower, 12 is a casing that takes in air from both sides of the blower and diverts it, and 13 is a rotating shaft. When the rotating shaft 13 is rotated by the above configuration, the impeller 2 is rotated and two different air flows 7, 8 are generated in the groove portions 9, 10 on both sides of the impeller 2.
Occurs, and at this time, heat exchange is performed between adjacent air streams via the wall surface of the impeller 2.

Problems to be Solved by the Invention However, in such a structure, since the heat exchange type blower rotates at high speed, the mechanical strength and precision of the impeller 2 are required, and the wall thickness of the impeller for heat exchange is reduced. There was a limit.

Further, since an air seal for separating the blown air on both sides of the blower is required, the cost becomes high and there is a problem in reliability due to seal wear or the like depending on long-term use. Further, there is a problem that the starting torque of the motor is increased due to the sliding resistance of the seal.

Therefore, the present invention provides a heat-exchange-type blower that improves heat exchange performance, eliminates the need for a seal structure, improves reliability, and has a simple structure.

Means for Solving the Problems In order to solve this problem, the heat exchange type blower of the present invention has a first path through which a working fluid flows, and an operation at a temperature lower than that of the working fluid flowing through the first path. A second path through which the fluid flows, a first fan that blows the working fluid in the first path, a working fluid that blows the working fluid in the second path, and is arranged to face the first fan. Second fan and first
A heat exchanging means for exchanging heat between the working fluid in the passage and the working fluid in the second passage, the heat exchanging means partitioning each passage and located between both fans, and The fins are provided on the partition wall portion and radially arranged from the vicinity of the outer circumference of each fan arranged on both sides of the partition wall portion, and the casing completes the first and second paths together with the partition wall portion of the heat exchange means. The partition has a structure in which the heat exchange means is sealed and wrapped except for the inlet and outlet of the working fluid.

Action The action of this technical means is as follows.

That is, by rotating the first and second fans, the working fluid flowing in the first and second paths flows in each path, thereby partitioning each path and being located between both fans. The working fluid flows while contacting both surfaces of the partition wall portion of the heat exchange means. At this time, the heat of the working fluid flowing in the first path is changed to the second heat through the fins provided in the partition wall portion.
The heat exchange is performed by moving to the working fluid flowing in the path.

Embodiment One embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a partially cutaway perspective view of the heat exchange type blower according to the present embodiment as viewed from the first path side. Reference numeral 13 is a first fan, and 15 is a rotation shaft, which serves as a rotation center of the first fan 13 and the second fan 14 (not shown in FIG. 1). The first fan 13 has blades 13a that generate an air flow when rotated, a disk-shaped fan body 13b that fixes the blades 13a, and the blades 13a.
And a ring portion 13c fixed to 3b. 17
Is a heat exchange means that is a thin plate that partitions the first path and the second path. The heat exchanging means 17 divides the first path and the second path and is located between the first fan 13 and the second fan 14 and has a partition wall portion 17c.
Fins 17a and 17b provided on both sides of the partition wall portion 17c
And the fins 17a and 17b are radially arranged from the vicinity of the outer peripheries of the fans 13 and 14 arranged on both sides of the partition wall portion 17c.

FIG. 2 is a vertical sectional view of this embodiment. Reference numeral 24 denotes a casing that encloses the heat exchange type blower, and includes air intake ports 18 and 19 for the first and second fans 13 and 14, and a first
The air outlets 20 and 21 of the route and the second route are provided. 22 is a flow of air flowing through the first path, and 23 is
The flow of the air which flows through the 2nd path whose temperature is lower than the air of the 1st path is shown.

Next, the operation of the configuration of this embodiment will be described.

First, in the above structure, when the rotating shaft 15 rotates, the first fan 13 and the second fan 14 fixed to the rotating shaft 15 are fixed.
Rotates and air flow 2 from the first air intake 18
2, but an air flow 23 is generated from the second air intake 19. At this time, the respective air flows 22 and 23 are
The flows are adjacent to each other via the partition wall portion 17c of the heat exchange means. The fins 17a and 17b projecting from both sides of the partition wall portion 17c have the partition wall portion 1 about the rotation axis.
Since the fans 13 and 14 arranged on both sides of 7c are radially provided from the vicinity of the outer circumference, they serve as air guides, and the air flows 22 and 23 are guided to the outer circumferential direction of the partition wall portion 17c without air loss. . Since the partition wall portion 17c completely partitions the first path and the second path, the air flows 22 and 23 flow through the respective paths without being mixed with each other, and the air blowout ports 20 and 21 are connected to the casing. It is released to the outside.

In this state, if there is a temperature difference between the air flows 22 and 23,
On both sides of the partition wall portion 17c, air (2
2 and 23) flow while coming into contact with each other, the partition wall portion 17c
The heat of the air 22 flowing in the first path is transferred to the air 23 flowing in the second path via the fins 17a and 17b provided on both sides, whereby heat exchange is performed. Therefore,
The air 22 in the first path loses heat and its temperature drops,
The amount of heat is supplied to the air 23 in the path of, and the temperature rises.

Although the fins 17a and 17b are provided on both sides of the partition wall portion 17c in the present embodiment, the same effect can be obtained by providing the fins 17a and 17b on only one surface.

Further, the material of the heat exchange means 17 can be made of metal, resin, paper or the like as long as it is a thin plate (several mm or less).

EFFECTS OF THE INVENTION As is apparent from the embodiments described above, the present invention provides a heat exchange partition wall portion located between two opposing fans,
Since the protrusions are arranged radially from the vicinity of the outer periphery of the fan arranged on both sides of the partition wall portion, the heat exchange area can be increased and the heat exchange performance can be significantly improved.
Moreover, the following effects are achieved.

Further, since the strength is improved by providing the protruding portion on the heat exchange partition wall, it is possible to extremely reduce the thickness of the heat exchange partition wall, and further improve the heat exchange efficiency.
Since the gap between the two fans can be minimized, the depth can be made compact when it is installed in the blower.

Furthermore, since the heat exchange partition wall is provided in the middle portion of both fans, the opening area of the penetrating portion of the fan shaft can be reduced to near the shaft diameter of the fan. Therefore, since a seal structure for separating two different air flows is not required, the structure is simplified, the reliability is improved, and the driving torque for rotating the fan can be suppressed to a low level, and the cost is reduced. it can.

In addition, since the radial projections provided on the outer peripheral part of the fan also serve as air guides that smooth the flow of air, heat exchange loss is reduced, compact construction is possible, and the strength of the partition wall is improved. The fan can be rotated at high speed to increase the air volume, and the heat exchange performance can be further improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a heat exchange type blower according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the heat exchange type blower, and FIG. 3 is an impeller of a conventional heat exchange type blower. Perspective view, 4th
The figure is a vertical cross-sectional view of the heat exchange type blower. 13, 14 ... Fan, 17 ... Heat exchange partition wall, 17
a, 17b ... Fins (protrusions), 24 ... Casing.

Claims (1)

[Claims] 1. A first path through which a working fluid flows, and the first path.
A second path through which a working fluid having a temperature lower than that of the working fluid flowing through the first path, a first fan for blowing the working fluid in the first path, and a working fluid in the second path are blown, A second fan arranged to face the first fan; heat exchanging means for exchanging heat between the working fluid in the first path and the working fluid in the second path; and the first and second A casing having a space in which the fan can operate and enclosing the heat exchanging means, wherein the heat exchanging means is provided on the partition wall portion partitioning each path and located between both fans, and the partition wall portion, The casing is composed of fins arranged radially from the vicinity of the outer circumference of each fan arranged on both sides of the partition wall portion, and the casing completely partitions the first and second paths together with the partition wall portion of the heat exchanging means, and Enclose and enclose the heat exchange means except for the inlet and outlet Heat exchange-type blower.