JPH10253118A - Air condition ventilation fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an air leakage or abnormal noise from being produced in an arrangement in which an air guiding member is arranged. SOLUTION: An air guiding member 25 made of foamed polystyrol, for example, which is arranged in main body frame 12 is operated to guide air discharged from an air suction fan 15 into one aeration passage of a heat exchanger 16 through an air feeding section 26 and an air guiding section 27. A side wall 27 arranged in the main body frame 12 and a side wall of the main body frame 12 are provided with a rib-like pressing part 29 and the air feeding section 26 is pressed by the pressing part 29. It is possible to prevent a warp from being generated at the air feeding section 26 and further it is possible to prevent a clearance from being generated between the air feeding section 26 and the bottom section 12b of the main body frame 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-conditioning ventilation fan having an air guide member in a main body frame for guiding air discharged from an intake fan or an exhaust fan to a heat exchanger through an air introduction portion. About.

[0002]

The inventors of the present invention have conceived an air-conditioning ventilator of this type having a configuration shown in FIG. In FIG. 12, a motor 2 and an exhaust fan 3 rotated by the motor 2 are provided inside a main body frame 1.
In addition to the arrangement of the intake fan 4 and the heat exchanger 5, an air guide member 6 is provided.

As shown in FIG. 13, the air guide member 6 has a plate-shaped air introduction portion 6a at the tip end, and left and right sides of the air introduction portion 6a are provided in the main body frame 1. In a state where the side walls 1a and 7 are brought into contact with each other, the side walls 1a,
7, the air introduced by the intake fan 4 is disposed in the main body frame 1, and the air sucked by the intake fan 4 is supplied to the heat exchanger 5 through the air inlet 6 a as shown by an arrow A 1 in FIG. To guide you to.

However, in the above-described configuration,
In a state where the air guide member 6 is disposed in the main body frame 1, a warp as shown by a two-dot chain line in FIG. In some cases, a gap 8 (see FIG. 14) is formed. When such a gap 8 is formed, the air discharged from the intake fan 4 becomes
As shown by an arrow A2 in FIG. 14, there is a problem in that leakage easily occurs through the gap 8 or abnormal noise is easily generated.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air-conditioning ventilator provided with an air guide member and capable of minimizing the occurrence of air leakage and abnormal noise.

[0006]

According to the first aspect of the present invention, there is provided a main body in which an intake fan and an exhaust fan are provided and a heat exchanger is provided. A frame, an air guide member disposed inside the main body frame, for guiding air sucked by the intake fan or the exhaust fan to the heat exchanger through an air introduction portion, and an inside of the main body frame. And a pressing portion that presses the air introduction portion in a state where the air guide member is disposed in the main body frame.

[0007] According to the above-described configuration, the air introduction portion of the air guide member is pressed by the pressing portion in a state where the air guide member is disposed in the main body frame, so that the air introduction portion is warped. Accordingly, it is possible to minimize the occurrence of a gap between the air introduction unit and the main body frame.

In this case, the pressing portion may be provided with a slope for guiding the air guide member when the air guide member is inserted into the body frame (the invention of claim 2), or a slope is provided at the tip of the air introduction portion. Is preferable (the invention of claim 3).

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, in FIGS. 1 and 2, the main body 11 of the air-conditioning ventilator is
, A motor 13, an exhaust fan 14 and a suction fan 15, each of which is a centrifugal fan and rotated by the motor 13, and a cross-flow heat exchanger 16 are arranged. . Among them, the intake fan 15
Is disposed on the rear side (the right side in FIG. 1) of the exhaust fan 14, and the heat exchanger 16 is disposed on the front side (the left side in FIG. 1).
Are located in

The motor 13 is mounted on a support member 17 provided in the main body frame 12 and is provided with an exhaust fan 14.
The fan casing 1 provided on the support member 17
8, and the intake fan 15 is surrounded by a fan casing 19 provided at the rear of the main body frame 12. A rear cover 20 is attached to a rear part of the main body frame 12 so as to cover the fan casing 19, and a front cover 21 is attached to a front part of the main body frame 12.

The rear cover 20 includes a fan casing 1
An intake hole 20a is provided at a portion corresponding to the suction port 19a of the fan 9, and an exhaust hole is provided at a portion corresponding to the discharge port of the fan casing 18 (not shown). Although not shown in detail, the front cover 21 is provided with an exhaust port for discharging indoor air and an air supply port for supplying outdoor air to the room. I have.

An air guide member 25 is disposed below the heat exchanger 16 in the main body frame 12. The air guide member 25 is made of, for example, styrofoam, and has a plate-like air introduction portion 26 protruding rearward as shown in FIG. 3, and is curved upward at a front portion. An air guide section 27 is provided, and the air introduction section 26 is disposed between the side wall 12a of the main body frame 12 and the side wall 28 provided so as to face the air guide section 27. . In this arrangement, the passage of the air guide member 25 and the discharge port 1 of the fan casing 19 are
9b.

Here, rib-shaped pressing portions 29, 29 projecting toward the other side are provided on the opposing surfaces of the side walls 12a, 28 located on both sides of the air introducing portion 26 in a substantially horizontal state. Have been. These pressing portions 29, 2
9 is an air introducing portion 26 between the main frame 12 and the bottom portion 12b.
A gap having substantially the same size as the thickness of the air inlet is formed, and the air inlet 26 is pressed into the bottom 12b by inserting the air inlet 26 into this gap.

At the tip of the air introduction section 26, a slope 31 is formed which is inclined downward toward the rear.
Is formed by a step 32 formed between the bottom 12b of the main body frame 12 and the discharge port 19b of the fan casing 19.
Facing from the front. In addition, the upper end of the air guide 27 is in contact with the lower end of the heat exchanger 16, and communicates a passage in the air guide 27 with one passage of the heat exchanger 16. An electrical component box 33 is attached to a front portion in the main body frame 12 by, for example, screwing. The electrical component box 33 pushes the air guide member 25 rearward (to the right in FIG. 1). I have.

As shown in FIG. 1, a shutter 35 is provided on the side wall 28. This shutter 35
Is configured to open and close a passage (the discharge port 19b portion of the fan casing 19) near the air introduction portion 26 by rotating the shaft portion 35a around a solenoid (not shown). In this state, one end portion comes into contact with the slope 31 of the air introduction portion 26.

In the above configuration, when the motor 13 is energized, the exhaust fan 14 and the intake fan 15 are simultaneously driven to rotate by the motor 13, and when the solenoid (not shown) is energized, the shutter 35 is opened. (See the two-dot chain line in FIG. 1).

Here, when the intake fan 15 is rotated, the air blown out of the fan casing 15 causes the air outside the room to flow through the intake hole 20a through the fan casing 1 as shown by the arrow B in FIG.
9, the air guide member 2 is discharged from the discharge port 19b.
The liquid is discharged toward the fifth side. The air discharged toward the air guide member 25 flows from the air introduction section 26 to the air guide section 27.
, And is supplied to the room from the air supply port of the front cover 21 through one ventilation path of the heat exchanger 16. When the exhaust fan 14 is rotated,
Due to the blowing action, after the indoor air is drawn into the fan casing 18 from the exhaust port of the front cover 21 through the other ventilation path of the heat exchanger 16 as shown by an arrow C in FIG. The air is discharged from the outlet of the fan casing 18 to the outside through the outlet of the rear cover 20. At this time, heat exchange is performed between air passing through one ventilation path of the heat exchanger 16 (air taken in from the outside) and air passing through the other ventilation path (air discharged from the room). become.

According to the first embodiment, the following effects can be obtained. First, in a state where the air guide member 25 is disposed in the main body frame 12, the air introduction portion 26 of the air guide member 25 is pressed by the pressing portions 29, 29, so that the air introduction portion 26 is warped. Can be prevented as much as possible, and accordingly, the generation of a gap between the air introduction part 26 and the bottom part 12b of the main body frame 12 can be prevented as much as possible. Therefore, it is possible to prevent air discharged from the discharge port 19b of the fan casing 19 toward the air guide member 25 from leaking outside without passing through the air guide member 25 and generating abnormal noise as much as possible. become.

As a measure for preventing air leakage, it is conceivable to provide a sealing material in the vicinity of the air inlet 26, for example. However, in this case, there is a problem that the sealing material is separately required and the operation of attaching the sealing material is troublesome. In this regard, according to the present embodiment, there is no such a problem.

In this embodiment, the air introducing section 2
6 is provided with a slope 31 at the front end thereof, so that the air introduction part 26 is formed by the pressing part 29 and the bottom part 12 b of the main body frame 12.
When it is inserted between them, the insertion can be easily performed. In addition, even when the upper surface of the air introduction portion 26 is higher than the upper end of the step portion 32 in a state where the air guide member 25 is disposed in the main body 12, the discharge port 1
The air discharged from 9b toward the air guide member 25 can flow smoothly. Furthermore, since the shutter 35 comes into contact with the slope 31 in the closed state of the shutter 35, the contact area between the shutter 35 and the air introduction unit 26 increases.

FIG. 4 shows a second embodiment of the present invention. The second embodiment differs from the first embodiment in the following points. That is, the front side of the pressing portion 29 (FIG. 4)
An inclined surface 37 is provided at the front end portion (middle left side) so as to be inclined toward the front side. In the case of such a configuration, the insertion of the air introduction part 26 can be further facilitated.

FIG. 5 shows a third embodiment of the present invention. The third embodiment differs from the first embodiment in the following points. That is, the front side of the pressing portion 29 (FIG. 5)
An inclined portion 39 having a slope 38 that is inclined so as to rise toward the front side is provided integrally on the middle left side). Also in the case of such a configuration, the insertion of the air introduction part 26 can be further facilitated, and the air introduction part 26 can be hardly damaged at the time of insertion.

FIG. 6 shows a fourth embodiment of the present invention. The fourth embodiment differs from the first embodiment in the following points. That is, the pressing portions 40, 40 protrude more than the pressing portion 29 on the side walls 12 a and 28 facing each other from the side walls 12 a and 28 to the side facing each other. Then, each pressing portion 40 has a protruding tip portion 40.
a, 40a are inclined so as to be directed downward by an angle α from the horizontal state, and their protruding tips 40a, 40a press the air introduction portion 26.

In such a configuration, each pressing portion 40 presses the air introduction portion 26 at a position distant from the side walls 12a and 28, so that warpage of the air introduction portion 26 is more reliably generated. Can be prevented.

FIG. 7 shows a fifth embodiment of the present invention. The fifth embodiment differs from the fourth embodiment in the following points. That is, the pressing portions 41, 41 protrude from the side walls 12 a, 28 facing each other in a substantially horizontal state toward the side facing each other from the side walls 12 a, 28, and have the protruding portion 41 a protruding downward at the protruding tip. , 4
1a is integrally formed, and the air introducing portion 26 is pressed by the convex portions 41a, 41a.

In such a configuration, each pressing portion 41 presses the air introducing portion 26 at a position distant from the side walls 12a and 28. Therefore, similarly to the above-described fourth embodiment, the air introducing portion 41 is pressed. The warpage of the portion 26 can be more reliably prevented. Further, in this case, the friction between the convex portions 41a, 41a and the air introduction portion 26 is small, and the air introduction portion 26
Insertion becomes easier.

FIG. 8 shows a sixth embodiment of the present invention. The sixth embodiment differs from the first embodiment in the following points. That is, the thickness D1 of the air introduction part 26 is set to be slightly larger than the gap D2 between the pressing part 29 and the bottom 12b of the main body frame 12 (D1> D2). In the case of such a configuration, the air introduction part 26 is inserted between the pressing part 29 and the bottom part 12b of the main body frame 12 in a press-fit state, and the main body frame 1 is always inserted.
2 is pushed toward the bottom 12b side (downward),
Warpage is further prevented from occurring.

FIG. 9 shows a seventh embodiment of the present invention. The seventh embodiment differs from the first embodiment in the following points. That is, the pressing portion 42 is provided in an inclined state so as to form along the slope 31 at the tip end portion of the air introduction portion 26. Even in the case of such a configuration, the air introducing portion 26 is always pressed by the pressing portion 42 to the main body frame 1.
Since it is pushed toward the bottom 12b side (downward) of the second, the occurrence of warpage is further prevented. Further, by providing the pressing portion 42 in such a manner that it hardly protrudes from the upper surface of the air introducing portion 26, there is an advantage that the pressing portion 42 can prevent the passage from being narrowed and the ventilation resistance can be minimized.

FIG. 10 shows an eighth embodiment of the present invention. This eighth embodiment differs from the above-described seventh embodiment in the following points. That is, by pressing the side of the distal end portion of the air introducing portion 26 by the pressing portion 42, the pressing portion 42 is configured to cut into the distal end portion of the air introducing portion 26. In the case of such a configuration, the air introduction portion 26 can be pressed more strongly toward the bottom portion 12b of the main body frame 12, and the occurrence of the warp of the air introduction portion 26 can be further prevented. In addition, even if there is some dimensional variation, the air introduction portion 26 can be reliably pressed.

FIG. 11 shows a ninth embodiment of the present invention. The ninth embodiment differs from the eighth embodiment in the following points. That is, the protrusions 43 are provided on both left and right sides of the tip of the air introduction unit 26, and the protrusions 4
Cushion member 44 is attached between 3 and 43. In the case of such a configuration, the protrusions 43 on both sides are provided.
Is easily compressed by the pressing portion 42, and thus is easy to assemble. The projections 43 also serve as positioning of the cushion member 44. The cushion member 44 includes the shutter 3
5 is in contact with the tip of the air inlet 26 (when closed)
Has the effect of softening the sound.

The present invention is not limited to the above embodiments, but can be modified or expanded as follows.
The pressing portion may be provided on the bottom 12b of the body frame 12.

The above embodiment is an example in which the heat exchanger 16 is disposed downstream of the intake fan 15. However, the heat exchanger 16 is disposed downstream of the exhaust fan. Can also be applied. In this case, the air guide member is disposed between the exhaust fan and the heat exchanger, and is used to guide the air discharged from the exhaust fan to the heat exchanger.

[0033]

According to the first aspect of the present invention, in a state in which the air guide member is provided in the main body frame, the air introduction portion of the air guide member is pressed by the pressing portion, so that the air guide portion is warped. Can be prevented from occurring, and as a result, a gap can be prevented from being generated between the air introduction portion and the main body frame, and thus, the occurrence of air leakage and abnormal noise can be prevented as much as possible. .

According to the second aspect of the present invention, since the pressing portion is provided with the inclined surface for guiding the insertion of the air introduction portion, the insertion of the air introduction portion can be easily performed.

According to the third aspect of the present invention, the inclined portion is provided at the tip of the air introducing portion, so that the air introducing portion can be easily inserted and the air is discharged toward the air guide member. Air can flow smoothly.

According to the fourth aspect of the present invention, since the pressing portion is provided along the slope of the air introducing portion, the air introducing portion is always pushed toward the main body frame by the pressing portion, and the warp is formed. Can be further prevented from occurring.
Further, the pressing portion can be provided so as to hardly protrude to the passage side of the air introduction portion, and there is an advantage that the pressing portion can prevent the passage from being narrowed.

According to the fifth aspect of the present invention, the air introducing portion is
Since the pressing portion can be pressed at a position away from the side wall, it is possible to more reliably prevent the air introduction portion from warping.

According to the sixth aspect of the present invention, the air guide member can be fixed while being positioned by the electrical component box. According to the seventh aspect of the present invention, since the protrusions are provided on both sides of the distal end portion of the air introduction portion, the protrusions can be easily compressed and deformed by the pressing portion. Will be the positioning. The cushion member has a function of dampening a sound when the shutter is closed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing a first embodiment of the present invention.

FIG. 2 is a perspective view of a main body frame portion in a state where a heat exchanger is taken out.

FIG. 3 is a cutaway perspective view of a main part.

FIG. 4 is a longitudinal sectional side view of a main part showing a second embodiment of the present invention.

FIG. 5 is a view corresponding to FIG. 4, showing a third embodiment of the present invention.

FIG. 6 is a longitudinal sectional front view of a main part showing a fourth embodiment of the present invention.

FIG. 7 is a view corresponding to FIG. 6, showing a fifth embodiment of the present invention.

FIG. 8 is a view corresponding to FIG. 4, showing a sixth embodiment of the present invention;

FIG. 9 is a view corresponding to FIG. 4, showing a seventh embodiment of the present invention;

FIG. 10 is a view corresponding to FIG. 4, showing an eighth embodiment of the present invention;

FIG. 11 is a perspective view of a main part showing a ninth embodiment of the present invention.

FIG. 12 is a diagram corresponding to FIG. 1, showing an example compared with the embodiment of the present invention.

FIG. 13 is a diagram corresponding to FIG. 3;

FIG. 14 is an enlarged vertical sectional side view.

[Explanation of symbols]

11 is a main body, 12 is a main body frame, 12a is a side wall, 13 is a motor, 14 is an exhaust fan, 15 is an intake fan, 16 is a heat exchanger, 25 is an air guide member, 26 is an air introducing section,
8 is a side wall, 29 is a pressing portion, 31 is a slope, 33 is an electrical component box, 35 is a shutter, 37 is a slope, 38 is a slope, 3
9 is an inclined portion, 40, 41, and 42 are pressing portions, 43 is a convex portion,
44 is a cushion member.

Claims (7)

[Claims] 1. A main body frame in which an intake fan and an exhaust fan are disposed and a heat exchanger is disposed, and the intake fan or the exhaust fan is disposed in the main body frame. An air guide member for guiding air discharged from a fan to the heat exchanger via an air introduction unit; and an air guide member provided inside the main body frame, wherein the air is provided in a state where the air guide member is provided in the main body frame. An air-conditioning ventilation fan, comprising: a pressing portion that presses an introduction portion. 2. The air-conditioning ventilation fan according to claim 1, wherein the pressing portion is provided with a slope for guiding when the air guide member is inserted into the main body frame. 3. The air-conditioning ventilation fan according to claim 1, wherein a slope is provided at a front end of the air introduction section. 4. The air-conditioning ventilator according to claim 3, wherein the pressing portion is provided along a slope of the air introducing portion. 5. The pressing portion protrudes from a side wall located on both sides of the air introducing portion toward sides facing each other from the side wall,
The air-conditioning ventilator according to claim 1, wherein the air inlet is pressed at a position away from the side wall. 6. An air conditioner according to claim 1, wherein an electrical component box is mounted in the main body frame, and the electrical component box presses the air guide member toward the tip end of the air introducing portion. Ventilation fan. 7. A main body frame includes a shutter that opens and closes a passage near an air introduction section and abuts on a front end of the air introduction section in a closed state, and has protrusions on both sides of the front end of the air introduction section. The air-conditioning ventilation fan according to claim 1, wherein a cushion member is provided between the projections.