JP6967392B2 - Air conditioner - Google Patents

Description

The present invention relates to an air conditioner installed in a bathroom.

The air conditioner includes a main body case for accommodating a heat exchanger and a circulation fan, and a front panel having a suction port and an outlet and exposed to the bathroom. In the main body case, a scroll formed in a form surrounding the circulation fan and a stabilizer for partitioning the air intake side and the air discharge side of the circulation fan are provided, and the circulation in the bathroom is circulated by the scroll and the stabilizer. An air passage is formed. Conventionally, in order to suppress the increase in noise generated by the change in air flow due to the relationship between the circulation fan and its peripheral members (scroll and stabilizer) when the device is slimmed down, the circulation fan and the scroll and stabilizer are used. The shortest distance is 5 to 8% of the circulation fan diameter, and the distance between the stabilizer and the extension line extending downward and vertically from the outer circumference of the circulation fan on the side closer to the stabilizer is 10 to 15% of the circulation fan diameter, etc. A ceiling-type air conditioner having the structure designed by the above is known (paragraphs 0029, 0033, 0041, etc. of Patent Document 1).

Further, as shown in FIG. 6, the air conditioner 101 is provided with a ventilation port 123 on the side wall of the main body case 102, and a ventilation unit 105 provided with a ventilation fan 152 is connected to the ventilation port 123, and is indicated by a thick arrow in FIG. As shown, the ventilation fan 152 takes in the air in the bathroom from the suction port 131 of the front panel 103, causes it to flow out from the ventilation port 123 through the main body case 102, and discharges it to the outside through the ventilation unit 105. In this case, a ventilation gap 115 is provided between the bottom plate 124 of the main body case 102 and the bottom plate 161 of the fan storage chamber 106 of the circulation fan 112 in the main body case 102, and the ventilation air flows through the ventilation gap 115. By forming a path, the ventilation resistance is lowered so that a sufficient ventilation air volume can be obtained (Patent Document 2).

Japanese Unexamined Patent Publication No. 2008-122056 Japanese Unexamined Patent Publication No. 2005-90827

In the former conventional example (Patent Document 1), even if the noise generated from the relationship between the circulation fan and its peripheral members can be suppressed when the device is slimmed down, the generated operating noise of the circulation fan leaks to the outlet side. No consideration was given to issuing it. Therefore, the effect of reducing the operating noise of the circulation fan heard on the bathroom side was insufficient.

In the latter conventional example (Patent Document 2), the ventilation resistance of the ventilation air is improved, but the operating sound of the ventilation fan 152 leaking from the ventilation port 123 passes through the ventilation gap 115 which becomes the ventilation air passage as it is. The structure was such that it was easily transmitted from the front panel 103 to the bathroom side. Therefore, there is a problem that the operating noise of the ventilation fan 152 is heard loudly on the bathroom side.

On the other hand, it is conceivable to change the route of the air passage of the circulating air or the ventilation air to make it difficult for the operating noise of the blower such as the circulation fan or the ventilation fan to be transmitted to the outside. There is a risk that the air volume will decrease further. The air volume from the blower is required to secure a certain level or higher in terms of performance such as heating performance and ventilation performance.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air conditioner in which the air volume by the blower is secured to a certain level or more and the operating noise of the blower heard on the bathroom side is reduced.

The air conditioner according to the present invention is
It is provided with a housing equipped with a heat exchanger, a blower that takes in the air in the bathroom into the housing, and an opening provided in the housing through which the air in the bathroom flows by the blower.
When viewed from the front of the opening, a sound insulating means is arranged in the housing so that the blower is hidden within a range in which the air volume of the air blown by the blower is maintained above a certain level.

As a result, the operating sound of the blower from the blower to the opening can be blocked by the sound insulating means to make it difficult to reach the opening, and yet, the air volume by the blower can be secured above a certain level without being reduced.

As one form of the above air conditioner,
The housing is composed of a main body case in which a heat exchanger is arranged and a front panel having a suction port and an outlet and exposed to the bathroom.
The main body case is arranged in the attic space so as to be arranged at the mounting port provided on the ceiling panel of the bathroom.
The front panel is arranged from the bathroom side to the ceiling panel mounting port, and the air outlet is arranged on the ceiling of the bathroom.
The blower is housed in the main body case, and is composed of a circulation fan that takes in the air in the bathroom from the suction port into the main body case, heats it with a heat exchanger, and blows it out into the bathroom from the outlet.
The heat exchanger is located behind the circulation fan when viewed from the outlet side.
The opening is composed of front panel outlets,
The main body case has a scroll that surrounds the circulation fan and a stabilizer that faces the scroll and extends from the vicinity of the outer circumference of the circulation fan to the outlet side.
The sound insulation means is composed of stabilizers arranged so as to prevent the operating noise of the circulation fan from leaking from the air outlet.
The stabilizer is placed under the outlet so that the circulation fan can be hidden within the range where the air volume of the circulating air by the circulation fan is kept above a certain level by looking up at the outlet from the bathroom and looking at the outlet from the front. It is possible to reduce the operating noise of the circulation fan heard from the air outlet on the bathroom side of the bathroom .

In this form, the stabilizer can block the operating noise of the circulation fan from the circulation fan to the outlet and make it difficult to reach the outlet. Therefore, it is possible to suppress the operating noise of the circulation fan from leaking into the bathroom from the outlet, and it is possible to reduce the operating noise of the circulation fan heard on the bathroom side. Further, since the stabilizer is formed so as to face the scroll and extend to the outlet side, it is possible to secure a certain level or more without reducing the air volume of the circulating air by the circulation fan.

In the above-mentioned form of air conditioner,
It is preferable that the circulation fan is hidden by the stabilizer within a distance of 0 to 3 mm from the end face of the circulation fan to the end face of the stabilizer when viewed from the front of the air outlet.

As a result, it is possible to significantly reduce the operating noise of the circulating fan detected in the bathroom while ensuring a constant air volume of the circulating air by the circulating fan. That is, if the distance from the end face of the circulation fan to the end face of the stabilizer is less than 0 mm, the end face of the circulation fan protrudes from the end face of the stabilizer when viewed from the front of the outlet, and the operating noise of the circulation fan reaches the outlet. It is not preferable because it is easy to reach directly and the operating noise of the circulation fan is heard loudly on the bathroom side. If the distance from the end face of the circulation fan to the end face of the stabilizer exceeds 3 mm, the circulation fan will be in a state of being greatly retracted from the stabilizer when viewed from the front of the air outlet, and the stabilizer will increase the ventilation resistance on the discharge side of the circulating air in the circulation fan. It is not preferable to increase the rotation speed of the circulating fan so as to keep the air volume of the circulating air constant in order to compensate for the decrease in the air volume of the circulating air, because the operating noise of the circulating fan becomes loud.

As described above, according to the air conditioner according to the present invention, the air volume by the blower is secured to a certain level or more, and the operation sound of the blower is suppressed from leaking from the opening to suppress the operation sound of the blower heard on the bathroom side. Can be reduced.

It is sectional drawing which shows the main structure of the air conditioner of an embodiment. It is a graph which shows the measurement result of the operation sound of the circulation fan on the bathroom side in the air-conditioning apparatus of embodiment. In the air conditioner of the embodiment, it is a cross-sectional view seen from above by cutting out the bottom of the main body case in order to show the air passage of the ventilation air. It is sectional drawing which shows the air passage of the ventilation air formed mainly between the left side wall of a fan storage chamber part, and the left side wall of a main body case in the air-conditioning apparatus of embodiment (the fine dotted line in FIG. 4 is mainly The fan storage chamber and the heat exchanger arranged in the main body case are shown.). In the air conditioner of the embodiment, it is a side view which faces the inside of the main body case from a ventilation port with the ventilation unit removed (the alternate long and short dash line in FIG. 5 indicates the position of the removed ventilation fan). It is sectional drawing which shows the main structure of the conventional air conditioner.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the air conditioner 1 of the embodiment is provided with a substantially rectangular box-shaped main body case 2 in which a heat exchanger 11 and a circulation fan 12 are housed, and a main body provided with a suction port 31 and an outlet 32. It is provided with a front panel 3 that covers the lower surface opening portion 21 of the case 2. The main body case 2 and the front panel 3 form a housing of the air conditioner 1.

The main body case 2 is arranged in the space behind the ceiling so as to be arranged in the mounting port 41 provided in the ceiling panel 4 of the bathroom, and the front panel 3 is arranged in the mounting port 41 of the ceiling panel 4 from the bathroom side. Is exposed in the bathroom. As for the positional relationship of the air conditioner 1, the installation side of the main body case 2 is "upper" and the installation side of the front panel 3 is "lower" with respect to the ceiling panel 4 or the front panel 3, and the blown air on the front panel 3 is used. In the side-by-side direction of the outlet 32 and the suction port 31, the outlet 32 side is defined as "front", the suction port 31 side is defined as "rear", and the direction horizontally orthogonal to the front-rear direction is defined as the left-right direction.

The circulation fan 12 is an air circulation blower that takes in the air in the bathroom from the suction port 31 of the front panel 3 into the main body case 2, heats it by the heat exchanger 11 and blows it out into the bathroom from the outlet 32 of the front panel 3. To configure.

Further, a ventilation port 23 is provided through the front side wall 22 of the main body case 2, and a ventilation unit 5 is connected to the outside of the main body case 2 at the ventilation port 23. The ventilation unit 5 includes a ventilation box 51 connected to the main body case 2, a ventilation fan 52 housed in the ventilation box 51, and an exhaust duct 53. The ventilation fan 52 is for ventilation that takes in the air in the bathroom from the suction port 31 into the main body case 2, passes through the main body case 2, flows out from the ventilation port 23 into the ventilation box 51, and discharges the air to the outside through the exhaust duct 53. Configure the blower.

The heat exchanger 11 is arranged on the suction port 31 side with respect to the circulation fan 12. The heat exchanger 11 has a horizontal heat exchange portion 11a facing the opening surface of the suction port 31 and a vertical heat exchange portion 11b standing upright with respect to the opening surface of the suction port 31. It is arranged in a substantially L shape as a whole. The heat exchanger 11 circulates hot water supplied from a hot water supply device (not shown) to heat the air in the bathroom during the heat exchange, but the heat exchanger 11 is not limited to this and may be another heating means such as a heater. ..

Inside the main body case 2, a scroll 61 formed so as to surround the circulation fan 12 and a stabilizer 62 formed so as to face the scroll 61 and extend from the vicinity of the outer periphery of the circulation fan 12 toward the outlet 32 side of the front panel 3. And have. The scroll 61 and the stabilizer 62 form a fan storage chamber 6 in which the circulation fan 12 is arranged inside, and form an air passage through which the circulating air by the circulation fan 12 is flowed. A louver 33 for setting the wind direction of the air blown from the fan storage chamber 6 is provided near the outlet between the scroll 61 and the stabilizer 62.

The scroll 61 extends rearward from the bent portion 61a closest to the outer periphery of the circulation fan 12 to support one end of the heat exchanger 11, and extends forward from the bent portion 61a to the circulation fan 12. It has a front portion 61c that is formed in a curved surface that gently curves along the outer shape and extends to one end side of the outlet 32, and is formed so as to smoothly send the air discharged from the circulation fan 12 to the outlet 32. ing.

The stabilizer 62 is formed in a substantially inverted U-shape in cross section, and a substantially U-shaped curved portion 62a is arranged closest to the outer periphery of the circulation fan 12 to separate an air intake side and an air discharge side in the circulation fan 12. .. The rear wall portion 62b on the rear side extending from the curved portion 62a in the stabilizer 62 is formed so as to extend from the vicinity of the outer periphery of the circulation fan 12 toward the suction port 31 side and support the other end of the heat exchanger 11. .. The front wall portion 62c on the front side extending from the curved portion 62a of the stabilizer 62 faces the front portion 61c of the scroll 61, extends from the vicinity of the outer periphery of the circulation fan 12 to the other end side of the air outlet 32, and is the scroll 61. Together with the front portion 61c, the air discharged from the circulation fan 12 is formed so as to be smoothly sent to the outlet 32.

Next, in the above-mentioned air conditioner 1, a configuration for reducing the operating noise of each of the circulation fan 12 and the ventilation fan 52 will be described.
First, as a configuration for reducing the operating noise of the circulation fan 12, the stabilizer 62 is used as a sound insulating means. That is, the front wall portion 62c of the stabilizer 62 circulates as long as the circulating air volume by the circulation fan 12 is maintained above a certain level when viewed from the front of the outlet 32 (looking up at the outlet 32 directly above from the bathroom). The entire fan 12 is arranged in a hidden position.

As a result, the operating noise of the circulation fan 12 directly from the circulation fan 12 toward the outlet 32 can be blocked by the stabilizer 62 and made difficult to reach the outlet 32. Therefore, it is possible to suppress the operating noise of the circulation fan 12 from leaking into the bathroom from the outlet 32, and it is possible to reduce the operating noise of the circulation fan 12 heard on the bathroom side. In this way, the stabilizer 62 is a sound insulating means that blocks the operating sound of the circulation fan 12 directly toward the air outlet 32 and suppresses leakage from the air outlet 32 into the bathroom. Further, since the front wall portion 62c of the stabilizer 62 is formed so as to face the front portion 61c of the scroll 61 and extend toward the outlet 32, the air volume of the circulating air by the circulation fan 12 is reduced. It can be secured above a certain level.

Regarding the specific positional relationship between the stabilizer 62 and the circulation fan 12, when viewed from the front of the outlet 32, the end surface 12A of the circulation fan 12 (outer peripheral end surface of the circulation fan 12) to the end surface 62A of the stabilizer 62 (front wall of the stabilizer 62). The circulation fan 12 is set to be hidden by the stabilizer 62 within a distance d to the front surface of the portion 62c) of 0 to 3 mm, preferably 1 to 3 mm.

As a result, the operating noise of the circulation fan 12 detected in the bathroom can be significantly reduced while ensuring a constant air volume of the circulating air by the circulation fan 12. That is, if the distance d from the end surface 12A of the circulation fan 12 to the end surface 62A of the stabilizer 62 is less than 0 mm, the end surface 12A of the circulation fan 12 protrudes from the end surface 62A of the stabilizer 62 when viewed from the front of the outlet 32. It is not preferable because the operating sound of the circulating fan 12 can easily reach the outlet 32 directly and the operating sound of the circulating fan 12 can be heard loudly on the bathroom side. On the other hand, if the distance d from the end surface 12A of the circulation fan 12 to the end surface 62A of the stabilizer 62 exceeds 3 mm, the circulation fan 12 is in a state of being largely retracted from the stabilizer 62 when viewed from the front of the air outlet 32, and the circulation fan is provided by the stabilizer 62. The ventilation resistance on the discharge side of the circulating air in No. 12 is increased and the air volume of the circulating air is reduced. To compensate for this, the circulation fan is increased by increasing the rotation speed of the circulation fan 12 so as to keep the air volume of the circulating air constant. It is not preferable because the driving noise of 12 becomes loud.

In order to confirm the above effects, the following noise test was performed on the air conditioner 1 of the embodiment shown in FIG.
A state in which the blown air volume (circulating air volume) at the outlet 32 by the circulating fan 12 is kept constant at each set position where the distance d from the end face 12A of the circulation fan 12 to the end face 62A of the stabilizer 62 is in the range of -6 mm to +6 mm. Then, the operating sound of the circulation fan 12 on the bathroom side was measured.

Here, when the distance d is negative, the end surface 12A of the circulation fan 12 appears to protrude from the end surface 62A of the stabilizer 62 when viewed from the front of the outlet 32.
The rotation speed of the circulation fan 12 was adjusted in order to keep the circulation air volume of the circulation fan 12 constant at each set position of the distance d.
The distance d between the circulation fan 12 and the stabilizer 62 was set by changing the thickness of the front wall portion 62c of the stabilizer 62. Therefore, the front-rear width dimension of the air outlet 32 (the distance from the inner surface of the lower end of the front portion 61c of the scroll 61 to the front surface of the front wall portion 62c of the stabilizer 62) changes depending on the set position of the stabilizer 62. Specifically, the front-rear width dimension of the air outlet 32 was set to 64 mm at a position where the end surface 62A of the stabilizer 62 coincided with the end surface 12A of the circulation fan 12 (the position where the distance d is 0 mm). That is, the front-rear width dimension of the air outlet 32 is 70 mm when the distance d from the end surface 12A of the circulation fan 12 to the end surface 62A of the stabilizer 62 is set to −6 mm, and is 58 mm when the distance d is set to +6 mm.
The measurement position of the operating sound of the circulation fan 12 was measured at a position 1 m below the front panel 3 of the air conditioner 1 and 1 m forward from the front side wall 22 of the main body case 2 of the air conditioner 1.
The measurement result of the operating sound of the circulation fan 12 is shown in the graph of FIG.

From the above measurement results, the loudness of the operating sound of the circulation fan 12 heard on the bathroom side is such that the distance d from the end face 12A of the circulation fan 12 to the end face 62A of the stabilizer 62 is -6 mm while the circulating air volume is kept constant. It was confirmed that this distance d decreased in the range of 0 to 3 mm, and in particular, it decreased significantly in the range of 1 to 3 mm, as compared with the case of setting. For example, when the distance d is 1 mm, the circulating air volume can be secured at the same air volume with the same rotation speed of the circulation fan 12 as when the distance d is -6 mm, and when the distance d is -6 mm. The operating noise of the circulation fan 12 could be reduced as compared with the above. Further, when the distance d is 3 mm, even if the rotation speed of the circulation fan 12 is increased in order to secure the same circulating air volume as when the distance d is -6 mm, circulation is performed as compared with the case where the distance d is -6 mm. The operating noise of the fan 12 could be reduced.

From the above, when viewed from the front of the outlet 32, the distance d from the end face 12A of the circulation fan 12 to the end face 62A of the stabilizer 62 is within the range of 0 to 3 mm while the circulating air volume by the circulation fan 12 is kept constant. It was demonstrated that when the circulation fan 12 is set to be hidden by the stabilizer 62, the operating noise of the circulation fan 12 heard on the bathroom side is reduced.

Next, a configuration for reducing the operating noise of the ventilation fan 52 will be described together with a structure for forming an air passage for the ventilation air.
In the conventional air conditioner 101, as shown in FIG. 6, a ventilation gap 115 through which ventilation air flows is provided between the bottom plate 124 of the main body case 2 and the bottom plate 161 of the fan storage chamber 106. In the air conditioner 1, the main body case 2 has a shape in which the scroll 61, which is the outer shell of the fan storage chamber portion 6, also constitutes the bottom of the main body case 2 and extends the plate portion 24 connected to the front side wall 22 of the main body case 2. (See Fig. 1). That is, it is not configured to have a gap like a double bottom between the bottom plate of the main body case 2 and the bottom plate of the fan storage chamber 6.

In the air conditioner 1 of the present embodiment, as shown in FIGS. 3 to 5, the left side wall 25 adjacent to the front side wall 22 provided with the ventilation port 23 in the main body case 2 and the left side wall 63 of the fan storage chamber portion 6 A gap 13 is provided between the two. In this gap 13, a board case 14 for accommodating a control board is arranged near the lower surface opening portion 21 of the main body case 2. Therefore, in the gap 13, an air passage space 15 is formed, which is an air passage through which ventilation air can pass between the bottom side of the main body case 2, that is, the bottom surface 24a connected to the left side wall 25 of the main body case 2. Will be done. The air passage space 15 suppresses an increase in the ventilation resistance of the ventilation air. The air passage space 15 is not between the left side wall 25 of the main body case 2 and the left side wall 63 of the fan storage chamber 6, but the right side wall 26 of the main body case 2 and the right side wall 64 of the fan storage chamber 6. It may be provided between.

From the above configuration, when the air in the bathroom is taken into the main body case 2 from the suction port 31 of the front panel 3 by the ventilation fan 52, the ventilation air exchanges heat as shown by the thick arrows in FIGS. 3 to 5. It passes through the gap 28 between the vertical heat exchange portion 11b of the vessel 11 and the rear side wall 27 of the main body case 2, and subsequently between the left side wall 25 of the main body case 2 and the left side wall 63 of the fan storage chamber portion 6. It passes through the air passage space 15 on the bottom side of the case, and flows out from the ventilation port 23 provided on the front side wall 22 of the main body case 2 into the ventilation box 51 connected to the outer surface of the main body case 2. In this way, the ventilation air flows in a crank shape through the air passage space 15 provided at a position deviated from the front of the ventilation port 23 in the main body case 2, passes through the sufficiently wide air passage space 15, and reaches the ventilation port 23. It flows smoothly along the air passage. Therefore, the ventilation resistance does not increase, and the air volume of the ventilation air by the ventilation fan 52 can be secured to a certain level or more.

The ventilation port 23 is located on the left side of the front side wall 22 of the main body case 2 and is provided near the bottom side of the main body case 2, and the air passage is provided in the front side wall 22 of the main body case 2 so that the ventilation resistance of the ventilation air does not increase. Although it is arranged on the side close to the space 15 (see FIG. 5), it can be provided at an arbitrary position on the front side wall 22 of the main body case 2 as long as the ventilation resistance of the ventilation air does not increase.

As a configuration for reducing the operating noise of the ventilation fan 52, the fan storage chamber portion 6 of the circulation fan 12 is used as a sound insulating means. That is, when viewed from the front of the ventilation port 23, the wall surface 60 of the scroll 61, which is an outer portion of the fan storage chamber 6, stands in front of the ventilation port 23 within a range in which the air volume of the ventilation air by the ventilation fan 52 is maintained above a certain level. The ventilation fan 52 is arranged so as to be hidden (in FIG. 3, as shown by a dotted line extending from the position of the ventilation fan 52, a state in which the scroll wall surface 60 faces the ventilation fan 52 when viewed from above is shown. In FIG. 5, when the ventilation unit 5 is removed and the inside of the main body case 2 is viewed from the ventilation port 52 side, the scroll wall surface 60 faces the position of the ventilation fan 52 indicated by the one-point chain line, and the ventilation fan 52 is shown. It shows the state of hiding.) Further, as described above, the ventilation air passage space 15 is provided in the main body case 2 at a position laterally displaced from the front surface of the ventilation port 23.

From the above configuration, the operating noise of the ventilation fan 52 leaking from the ventilation port 23 into the main body case 2 can be blocked by the wall surface 60 of the scroll 61 standing in front of the ventilation port 23, and may leak to the air passage space 15 side. It is possible to make it difficult to reach the suction port 31 of the front panel 3. Further, as described above, the ventilation air can pass through the air passage space 15 formed between the left side wall 25 of the main body case 2 and the left side wall 63 of the fan storage chamber portion 6, and the ventilation air by the ventilation fan 52 can pass through. It is secured above a certain level without reducing the air volume. Therefore, it is possible to suppress the operating noise of the ventilation fan 52 from leaking from the front panel 3 into the bathroom while ensuring the air volume of the ventilation air above a certain level, and it is possible to reduce the operating noise of the ventilation fan 52 heard on the bathroom side. can.

In order to confirm the above effects, the operating noise of the ventilation fan 52 on the bathroom side was measured for the air conditioner 1 of the embodiment shown in FIG. As a comparison, the operating noise of the ventilation fan 152 was also measured for the conventional air conditioner 101 shown in FIG. The measurement position of the operating noise of the ventilation fan 52 is 1 m below the front panel 3 of the air conditioner 1 and 1 m forward from the front wall surface of the main body case 2 of the air conditioner 1, as in the case of the circulation fan 12. It was measured.
As a result, in the air conditioner 1 of the embodiment of FIG. 1, it was confirmed that the noise was reduced by about 5 dB as compared with the conventional air conditioner 101 shown in FIG. 6 in a state where ^{the ventilation air volume was maintained at 60 m 3 / h.} rice field. In this case, in the air conditioner 1 of FIG. 1, the rotation speed of the ventilation fan 52 is increased by about 100 r / min as compared with the conventional air conditioner 101 shown in FIG. 6 in order to set ^{the ventilation air volume to 60 m 3 / h.} The operating noise of the ventilation fan 52 heard on the bathroom side could be reduced as compared with the conventional air conditioner 101 of FIG.
From the above, it was demonstrated that according to the air conditioner 1 of the present embodiment, the operating noise of the ventilation fan 52 heard on the bathroom side is reduced while keeping the ventilation air volume at the same level as the conventional one.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the claims and the equivalent range.

1 Air conditioner 2 Main body case 3 Front panel 5 Ventilation unit 6 Fan storage chamber 11 Heat exchanger 11a Horizontal heat exchange part 11b Vertical heat exchange part 12 Circulation fan 12A Circulation fan end face 13 Gap 14 Board case 15 Wind Road space 22 Front side wall of main body case 23 Ventilation port 25 Left side wall of main body case 31 Suction port 32 Air outlet 52 Ventilation fan 60 Scroll wall surface 61 Scroll 62 Stabilizer 62A Stabilizer end face 63 Left side wall of fan storage chamber d Distance

Claims (2)

It is provided with a housing equipped with a heat exchanger, a blower that takes in the air in the bathroom into the housing, and an opening provided in the housing through which the air in the bathroom flows by the blower.
An air conditioner in which sound insulation means is arranged inside the housing so that the blower is hidden within the range where the air volume of the air blown by the blower is kept above a certain level when viewed from the front of the opening .
The housing is composed of a main body case in which a heat exchanger is arranged and a front panel having a suction port and an outlet and exposed to the bathroom.
The main body case is arranged in the attic space so as to be arranged at the mounting port provided on the ceiling panel of the bathroom.
The front panel is arranged from the bathroom side to the ceiling panel mounting port, and the air outlet is arranged on the ceiling of the bathroom.
The blower is housed in the main body case, and is composed of a circulation fan that takes in the air in the bathroom from the suction port into the main body case, heats it with a heat exchanger, and blows it out into the bathroom from the outlet.
The heat exchanger is located behind the circulation fan when viewed from the outlet side.
The opening is composed of front panel outlets,
The main body case has a scroll that surrounds the circulation fan and a stabilizer that faces the scroll and extends from the vicinity of the outer circumference of the circulation fan to the outlet side.
The sound insulation means is composed of stabilizers arranged so as to prevent the operating noise of the circulation fan from leaking from the air outlet.
The stabilizer is placed under the outlet so that the circulation fan can be hidden within the range where the air volume of the circulating air by the circulation fan is kept above a certain level by looking up at the outlet from the bathroom and looking at the outlet from the front. An air conditioner that is configured to reduce the operating noise of the circulation fan that can be heard from the air outlet on the bathroom side. In the air conditioner according to claim 1,
An air conditioner in which the circulation fan is hidden by the stabilizer within a distance of 0 to 3 mm from the end face of the circulation fan to the end face of the stabilizer when viewed from the front of the air outlet.

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