JPS647287B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a ventilation system having a rotary regenerative heat exchanger, commonly referred to as the Econovent type, and a Sirotskov fan.

[Background of the invention]

A ventilation system having a rotary heat exchanger and a Sirotskov fan is known from Japanese Utility Model Application No. 51-139969.

This type of ventilation system naturally requires a small volume. For this reason, deciding where to direct the suction port of the Shirotsuko fan is always a design problem. This is because if the front surface of the suction port is not sufficiently wide, ventilation performance will deteriorate.
It is also important to consider the cooling of the impeller drive motor that the Sirotskov fan has.

[Purpose of the invention]

The present invention was made to solve these problems, and its purpose is to have a compact overall volume, to provide sufficient space in front of the suction port of the Shirotsko fan, and to cool the electric motor. The purpose is to construct a ventilation system with a heat exchanger that can perform this well.

[Summary of the invention]

In the present invention, a first Sirotskov fan forming a first flow of gas passing through a rotary heat exchanger and a second flow of gas passing through the heat exchanger exchanging heat with the first flow are provided. A second flow-forming fan is provided.

The heat exchanger is provided between the first Sirotskov fan and the second Sirotskov fan, with the rotating shaft of the heat exchanger extending in the direction in which the first Sirotskov fan and the second Sirotskov fan are located.

The electric motor for driving the impeller of the first Sirotskov fan is provided in the second flow path for guiding the second flow, and the electric motor for driving the impeller for the second Sirotskov fan is provided for the first flow path for guiding the first flow. .

In the present invention, the suction ports of the first and second Sirotskov fans are arranged in a direction perpendicular to the axis of the rotating shaft of the heat exchanger, and the electric motors of the first and second Sirotskov fans are Provided in the opposite direction to the direction in which it is located.

Further, in both the first flow path and the second flow path, the side where the impeller is located is made wider than the side where the electric motor is located.

[Embodiments of the invention]

Embodiments of the present invention shown in the figures will be described below.

The frame body, the whole of which is indicated by 1, includes a bottom plate 2, a top plate 3,
Two front plates 4a, 4b and both side plates 5a, 5b
, a back plate 6 , and a sealing plate 7 .

An opening 8 is left between the front plates 4a and 4b, and one side 4a is welded to the bottom plate 2, top plate 3, and side plate 5a, and the other side 4b is welded to the bottom plate 2, top plate 3, and side plate 5b. Of course, the bottom plate 2 and the top plate 3 are both side plates 5a,
5b and the back plate 6 by welding,
The side plates 5a, 5b and the back plate 6 are also fixed by welding.

The cold sealing plate 7 is configured to close the opening 8 and is configured to be detachable from the opening 8. As the means for attaching the sealing plate 7, it is preferable to use bolts and butterfly nuts to fix it so that it can be attached and detached without the need for tools.

The opening 8 is used to take the first blower unit 9, the second blower unit 10, and the heat exchange unit 11 in and out of the frame 1.

The first blower unit 9 and the second blower unit 10 are configured to the same specifications, and with respect to the frame 1,
One 9 is mounted with the suction port 12 facing upward, and the other 10 is mounted with the suction port 12 facing downward.

The first and second blower units 9 and 10 and the heat exchange unit 11 jointly operate partition walls 15 and 1 that partition the inside of the frame 1 into a first flow path 13 and a second flow path 14.
6, 17 and 18. The partition wall 15 is included in the first blower unit 9, and the partition walls 16 and 1
7 is included in the heat exchange unit 11, and the partition wall 18 is included in the second blower unit 10.

The first blower unit 9 forms a first flow through the heat exchanger 19 of the heat exchanger unit 11, and this first
The flow passes through the first flow path 13.

The second blower unit 10 passes through a heat exchanger 19,
A second stream of gas is formed that exchanges heat with the first stream. The second flow passes through second flow path 14 .

In order to take gas into the first flow path 13, the side plate 5
An inlet 20 is provided on the side plate 5a, and an inlet 21 is provided on the side plate 5a to introduce gas into the second flow path 14.
Further, in order to discharge the gas in the first flow path 13, a discharge port 22 is provided in the side plate 5a, and in order to discharge the gas in the second flow path 14, a discharge port 23 is provided in the side plate 5b.

The first blower unit 9 is constructed by attaching a Schortzko fan 24 to the partition wall 15. The casing 25 and impeller 26 of the Shirodskov fan 24 are connected to the partition wall 1
5, and an electric motor 27 for driving an impeller 26 is located on the other side, and its stator is fixed to the partition wall 15. Rotating shaft 2 of electric motor 27
8 penetrates the partition wall 15.

As described above, the suction port 12 of the first blower unit 9 is open upward, and the discharge port 29 is in close contact with the side plate 5a and connected to the discharge port 22.

Now, the frame 1 is placed so that the partition wall 15 is horizontal.
mounted inside. The width of the partition wall 15 is configured to increase as it goes from the one side circumferential surface having the opening 8, that is, the surface having the front plates 4a and 4b, toward the back, that is, the direction where the rear plate 6 is located. There is.

Inside the frame 1, there are guide means 30, 31 that sandwich the partition wall 15 of the first blower unit 9 inserted into the frame 1 through the opening 8 from above and below and guide it toward the side plate 5a. It is provided inside the back plate 6 and the front plate 4a.

The second air blowing unit 10 is constructed by attaching a sirocco fan 32 to the partition wall 18. The casing 33 and impeller 34 of the Sirotskov fan 32 are located on one side of the partition wall 18, and the electric motor 35 that drives the impeller 34 is located on the other side, and its stator is fixed to the partition wall 18. It has been done. A rotating shaft 36 of the electric motor 35 passes through the partition wall 18.

The discharge port 37 is in close contact with the side plate 5b, and the discharge port 23
is connected to.

In both the first and second flow paths, the portion where the suction port 12 is located is wider than the portion where the electric motors 27 and 35 are located.

The partition wall 18 is installed within the frame 1 so as to be horizontal. The width of the partition wall 18 increases as it goes from the surface having the front plates 4a, 4b toward the rear plate 6.

Inside the frame 1, there are guide means 38 and 39 on the back that sandwich the partition wall 18 of the second blower unit 10 inserted into the frame 1 through the opening 8 from above and below and guide it toward the side plate 5b. It is provided inside the face plate 6 and the front plate 4b.

In order to facilitate the introduction of the first blower unit 9 and the second blower unit 10 into the guide means 30, 31, 38, 39, the partition walls 15, 18 of the respective guide means
Those who are higher than those who are lower are 40,41
As shown in , the starting point of the introduction end is elongated with a delay.

The heat exchange unit 10 is a rotary type heat exchanger 19 generally called an Econovent type.
Use.

The heat exchange unit 11 is located in the first
A rotating shaft 42 of the blower unit 9 and the second blower unit 10 is provided so as to face the direction in which the first and second blower fans 24 and 32 are located.
The upper part of the heat exchanger 19 is in the first passage 13,
The lower portion is located within the second passage 14 .

This heat exchange unit 11 has a cylinder 43 surrounding the heat exchanger 19 and two frames 44, 45. The cylinder 43 is fixed between the frames 44 and 45, and the outer peripheral surfaces of the frames 44 and 45 are square.
It is configured to a size that allows it to fit snugly into the frame body 1.

A partition wall 16 is fixed to the frame 44, and the frame 45
A partition wall 17 is fixed to the.

The width from the outer end surface 46 of this partition wall 16 to the outer end surface 47 of the other partition wall 17 becomes narrower toward the back from the opening 8, that is, toward the rear panel 6. It is configured.

On the inside of the bottom plate 2 and top plate 3 of the frame 1, a frame 44,
A guide member 48 is provided which abuts on the heat exchange unit 45 and guides the heat exchange unit 11 toward the back from the opening 8.
Fixing means (not shown) is provided for fixing the heat exchange unit 11 to a predetermined position on the frame 1, if necessary.

Now, the width of the opening 8 is the maximum width of the partition walls 15 and 18 as seen in the direction in which the rotating shaft 42 extends, and the width of the partition wall 1.
6 to the outer end surface 46 of the partition wall 17
7, which is larger than the maximum width as seen in the direction in which the rotating shaft 42 extends.

In this way, the opening 8 does not span the entire width facing the first and second blower units, but spans the entire width facing the heat exchange unit, and also extends across the entire width facing the first and second blower units 9, 10 and the heat exchange unit 11. It is sized so that people can enter and exit.

For this reason, the first and second blower units must be moved in a substantially L-shape when moving in and out of the frame 1, but since they can be moved in and out through a relatively small opening, the operator can move the first and second blower units 9, 9, Work can be done at one location without moving in the direction in which the heat exchange unit 11 and the second blower unit 10 are lined up. This is very convenient when working at high places since there is no need to move the step stool. Furthermore, since the opening is small, even if the plates constituting the frame are relatively thin, they can be made durable.

The parts where the partition walls 15, 16, 17, and 18 come into contact with each other, these partition walls are the front plates 4a, 4b, and the side plates 5.
a, 5b, the part that comes into contact with the back plate 6, and the casings 25, 33 of the Shirotsuko fans 24, 32
However, although not shown in the figure, the parts that come into contact with the side plates 5a and 5b are provided with a
A porous elastic body is attached.

Also, between the inner peripheral surface of the cylinder 43 and the heat exchanger 19,
Although not shown, a rubber tongue extending from the inner surface of the cylinder 43 and making sliding contact with the outer peripheral surface of the heat exchanger 19 is provided at a position parallel to the rotating shaft 42 . This is also to prevent gas leakage.

Note that 49 is an electric motor for driving the heat exchanger 19, and this is attached to a portion 50 rising from the partition wall 16 at right angles. Also, the rotation axis 4
2, that is, the end of the output shaft of the electric motor 49 is supported rotatably at a portion extending down from the partition wall 17.

Now, with the above configuration, when installing this ventilation system on the ceiling or in the attic,
First, the sealing plate 7 is removed and the opening 8 is opened.

Next, the heat exchange unit 11 is pulled toward the opening 8 along the guide member 48 and pulled out from the opening 8.

Next, insert your hand into the frame 1 through the opening 8, pull the first blower unit 9 toward the side plate 5b,
Move it to the front of opening 8. When this state is reached, pull it out through the opening 8.

Furthermore, insert your hand into the frame 1 through the opening 8, pull the second blower unit 10 toward the side plate 5a, and move it to the front of the opening 8. When this state is reached, pull it out through the opening 8.

In this case, since neither the first and second blower units 9, 10 nor the heat exchange unit are included in the frame 1, only the weight of the frame 1 is reduced. This is light.
Therefore, it is easy to lift. This is lifted to a predetermined height and firmly fixed to the ceiling or attic (not shown) by any means.

After fixing the frame 1, first lift either the first blower unit 9 or the second blower unit 10, for example, the first blower unit 9, and insert it into the frame 1 through the opening 8. Next, the partition wall 15 is placed on the lower structural members of the guide means 30, 31, and the hand is inserted through the opening 8 and pushed in the direction where the side plate 5a is located. Then, the first air blowing means 9
0 and 31, and proceed toward the side plate 5a.

Next, the other one, that is, the second blower unit 10, is lifted and placed into the frame 1 through the opening 8.

Next, place the partition wall 18 on the lower structural members of the guide means 38, 39, and move it toward the side where the side plate 5b is located.
Insert your hand through opening 8 and push in. Then, the second blower unit 10 is guided by the guide means 38 and 39 and moves toward the side plate 5b.

Next, lift the heat exchange unit 11 and open the opening 8.
into the frame 1, along the guide member 48,
Push it towards the back.

Then, even if the first and second blower units 9 and 10 do not come into contact with the side plates 5a and 5b and stop midway, the outer end surfaces 46 to 47 of the partition walls 16 and 17 of the heat exchange unit 11 Since the dimensions are wider at the front, the first fan unit 9 and second fan unit 10 are pushed toward the side plates 5a and 5b due to the exchange effect, and the heat exchange unit 11 is set in a predetermined position. In the state where
The partition wall 15 is connected to the side plate 5a, and the partition wall 18 is connected to the side plate 5b.
and partition walls 15 and 16, 17 and 1, respectively.
8 are in contact with each other.

Further, the discharge port 29 of the casing 25 is connected to the side plate 5a.
The discharge port 37 of the casing 33 is in contact with the side plate 5.
b.

After installing this ventilation system on the ceiling or attic, the first and second blower units 9, 10 and heat exchange unit 11 must be removed from the frame in order to install the frame on the ceiling or attic. The operation is the same as when pulling out, so this explanation will be omitted.

Now, in the structure configured as described above, there is usually a temperature difference between the space where the inlet 21 and the outlet 22 communicate with each other and the space where the inlet 20 and the outlet 23 communicate with each other.

Therefore, for example, it is assumed that the temperature in the space where the inlet 20 and the outlet 23 communicate with each other is higher than the temperature in the other space.

Now, when the electric motors 27, 35, and 49 are driven, a first flow of air enters the first passage 13 from the inlet 20, passes through the heat exchanger 19 on the way, and flows out from the outlet 22, and a first flow of air flows from the inlet 21. First passage 14
into the interior, passing through the heat exchanger 19 on the way to the outlet 23
A second flow of air exits from the heat exchanger 19, and the heat exchanger 19 rotates.

When the first flow passes through the heat exchanger 19, the heat exchanger 19 absorbs the heat of the air entering from the inlet 20. First passage 13 of heat exchanger 19
When the inside part enters the second passage 14, the second
The air passing through the flow path 14 removes this heat and flows out from the outlet 22. Heat exchange takes place in this way.

〔Effect of the invention〕

According to the present invention, as is clear from the above description, there is a connection between a first Sirotskov fan forming a first flow of gas passing through a rotary heat exchanger and the first flow passing through the heat exchanger. A second Sirotskov fan forming a second flow of gas for heat exchange is provided, and the heat exchanger is provided between the first Sirotskov fan and the second Sirotskov fan with the direction in which the rotation axis of the heat exchanger extends in the first direction. The electric motor for driving the impeller of the first Sirotskov fan is provided in the second flow path that guides the second flow, and the impeller of the second Sirotskov fan is provided toward the direction where the Sirotskov fan and the second Sirotskov fan are located. A driving electric motor was placed in the first flow path for directing the first flow. Furthermore, the suction ports of the first and second Sirotskov fans are perpendicular to the axis of rotation of the heat exchanger, and
The direction opposite to the direction where the electric motor of the Sirotskov fan is located, and the first
In both the flow path and the second flow path, the side where the impeller is located is made wider than the side where the electric motor is located.

The rotary heat exchanger keeps ventilation resistance low,
In addition, in order to increase heat exchange efficiency, the diameter is large and the length is short.

In this regard, according to the present invention, the suction port of the Sirotskov fan faces the radial direction of the heat exchanger, and the side where the impeller is located is wider than the side where the electric motor is located, so the front side of the suction port of the Sirotskov fan is A ventilation fan with higher ventilation efficiency can be obtained with a smaller Shirotskov fan.
Further, the electric motor of one Shirotzko fan is cooled by the other Shirotzko fan, and the electric motor of the other Shirotzko fan is cooled by one Shirotzko fan, so each electric motor can obtain a sufficient cooling effect.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the ventilation system of the present invention, FIG. 2 is a horizontal sectional view of the thing shown in FIG. 1,
FIG. 3 is a vertical cross-sectional view of what is shown in FIG. 13 is the first flow path, 14 is the second flow path, 19 is the heat exchanger, 25 is the first Sirotskov fan, 26 is its impeller, 27 is its electric motor, 32 is the second Sirotskov fan, and 34 is its impeller. , 35 is the electric motor.

Claims (1)

[Claims] 1. A first Sirotskov fan forming a first stream of gas passing through a rotary heat exchanger, and a second stream of gas passing through the heat exchanger and exchanging heat with the first stream. The heat exchanger is provided between the forming second Sirotskov fan, and the heat exchanger is provided with its rotating shaft extending in the direction in which the first and second Sirotskov fans are located, and the impeller of the first Sirotskov fan is provided. An electric motor for driving the second flow is provided in a second flow path for guiding the second flow, and an electric motor for driving the impeller of the second Sirotskov fan is provided in a first flow path for guiding the first flow. Furthermore, the suction ports of the first and second Shirodskov fans are perpendicular to the axis of the rotating shaft, and relative to the direction in which the electric motors of the first and second Shirodskov fans are located. , provided facing in opposite directions, both the first flow path and the second flow path,
A ventilation system having a heat exchanger in which a side where the impeller is located is wider than a side where the electric motor is located.