JPH11190537A - Air conditioner indoor unit - Google Patents

Abstract

(57) [Summary] [Problem] At low cost without impairing the interior,
An indoor unit of an air conditioner having an excellent ventilation function capable of exchanging indoor air with outside air while air-conditioning the room without a sense of draft. SOLUTION: By a turbo fan 2 arranged in a casing 1, air sucked from a suction port 4a of a front panel 4 via a heat exchanger 3 is blown radially outward with respect to an axis. The inlet 4a of the front panel 4 and the heat exchanger 3
The casing 1 is provided with an outside air suction passage 8 which communicates the space between the outside and the outdoor. An outside air suction fan 11 that sucks outside air from outside to the front side of the heat exchangers 3 and 23 and a damper 13 that can adjust ventilation resistance of the outside air suction passage 8 are disposed in the air suction passage 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit of an air conditioner using a turbo fan that blows out sucked air radially outward with respect to an axis, and more particularly to an indoor unit of an air conditioner having a ventilation function. .

[0002]

2. Description of the Related Art Conventionally, as an indoor unit of an air conditioner, a cross fin heat exchanger and a cross flow fan are arranged in a substantially rectangular casing mounted on a wall surface, and are provided below the casing. Some air-conditioning air is blown out from the air outlet. However, in the indoor unit of the air conditioner, as shown in FIG. 7A, the direction of the blowout of the conditioned air of the indoor unit 101 mounted on the wall is almost limited to the front, so that the indoor unit is particularly occupied during the heating operation. There is a drawback that a person easily feels a draft feeling in the space S1. Therefore, the present applicant has manufactured an indoor unit of an air conditioner that can perform air conditioning without a sense of draft by using a turbo fan. The indoor unit of this air conditioner has a heat exchanger disposed in a casing and a rear side of the heat exchanger in the casing, and blows air sucked from a front side outward in a radial direction with respect to an axis. It is equipped with a turbo fan. The casing is provided with four outlets for blowing in four directions in the vertical and horizontal directions, respectively. When the turbo fan is rotated, as shown in FIG. 6, the air sucked from the suction port on the front side of the indoor unit 100 is blown out from each of the air outlets in four directions. Then, as shown in FIG. 7 (B), the air blown in four directions from the indoor unit 100 flows and circulates along the wall surface, the ceiling surface, and the floor surface so as to enclose the indoor living space S2, and the living space is circulated. At S2, people do not feel a sense of draft.

[0003]

By the way, in recent homes, since the airtightness has been improved, the necessity of performing ventilation for exchanging room air and outside air during use of the air conditioner has increased, and a window for ventilation has been required. Opening the room or installing a ventilation fan on the wall in the room to exchange indoor air with outside air. However, it takes time to open and close the windows, and if a ventilation fan for ventilation and an indoor unit for air conditioning are provided on the indoor wall, the number of devices increases, which increases the cost and improves the interior characteristics. It has the disadvantage of being impaired.

An object of the present invention is to provide an indoor unit of an air conditioner having an excellent ventilation function capable of exchanging room air with outside air while air-conditioning the room without a sense of draft without deteriorating the interior. To provide.

[0005]

According to a first aspect of the present invention, there is provided an air conditioner indoor unit, comprising: a turbo fan disposed in a casing; and a turbo fan disposed in the casing on a front side of the turbo fan. Heat exchanger, and a front panel attached to the casing and having a suction port at a predetermined interval on the front side of the heat exchanger, and the heat exchanger from the front side by the turbo fan by the turbo fan An air conditioner indoor unit that blows air sucked in through a radial direction outward with respect to an axis, the air conditioner being provided in the casing, a space between the suction port of the front panel and the heat exchanger, and an outdoor unit. An outside air suction passage communicating with the outside air suction passage, the outside air suction fan that is arranged in the outside air suction passage, and sucks outside air from the outside to the front side of the heat exchanger, and is disposed in the outside air suction passage, It is characterized in that the ventilation resistance of the air suction passage and a adjustable dampers.

According to the air conditioner indoor unit of the first aspect, when the turbo fan is driven, the room air sucked from the suction port of the front panel passes through the heat exchanger through the shaft of the turbo fan. Blows radially outward. Then, when driving the outside air suction fan provided in the outside air suction passage, the outside air sucked from the outside of the room,
Guided to the space between the front panel suction port and the heat exchanger through the outside air suction passage, and with the room air sucked from the front panel suction port through the heat exchanger to the turbo fan shaft Blow out radially outward. At this time, by adjusting the opening / closing angle of the damper disposed in the outside air suction passage, the ventilation resistance of the outside air suction passage is adjusted as necessary, and the amount of exchange between room air and outside air is controlled. As described above, both the ventilation turbo fan and the outside air suction fan draw outside air from outside the room, and send the air into the room through the outside air suction passage, thereby increasing the amount of ventilation. In addition, since the outside air sucked from the outdoor passes through the heat exchanger, it is adjusted to an appropriate temperature and humidity, so that it is possible to ventilate without feeling discomfort regardless of weather conditions. . Further, it is possible to prevent the room air and the outside temperature-adjusted outside air from being mixed on the downstream side of the heat exchanger, and it is possible to avoid dew or the like due to ventilation. Also, by controlling the rotation speed of the outside air suction fan,
The ventilation amount can be adjusted by adjusting the flow rate of the outside air passing through the outside air suction passage as needed. Therefore, there is no need to provide a separate ventilation fan, realizing an indoor unit of an air conditioner with an excellent ventilation function that can exchange indoor air and outside air while air-conditioning the interior without a sense of draft without compromising the interior characteristics. it can.

The indoor unit of the air conditioner according to claim 2 is
2. The indoor unit of an air conditioner according to claim 1, wherein the heat exchanger is disposed at a suction port of the front panel, and adjusts a ventilation resistance of the suction port so that the suction port of the front panel and the heat exchanger when the turbo fan is driven. And a negative pressure adjusting louver for adjusting the negative pressure in the space therebetween.

According to the indoor unit of the air conditioner of the second aspect, the pressure loss of the air sucked from the suction port when the turbo fan is driven is adjusted by the negative pressure adjusting louver disposed at the suction port of the front panel. Then, the negative pressure in the space between the inlet of the front panel and the heat exchanger is adjusted. That is,
When the pressure loss is reduced by increasing the opening / closing angle of the negative pressure adjusting louver, the negative pressure in the space between the inlet of the front panel and the heat exchanger is reduced, and the opening / closing angle of the negative pressure adjusting louver is reduced. When the pressure loss is increased, the negative pressure in the space between the inlet of the front panel and the heat exchanger increases. Therefore, by changing the negative pressure of the space between the suction port of the front panel and the heat exchanger by the opening and closing angle of the negative pressure adjusting louver, the amount of outside air sucked through the outside air suction passage is changed. Can be adjusted.

The indoor unit of the air conditioner according to claim 3 is
The air conditioner indoor unit according to claim 1 or 2, wherein an outside air inflow portion is provided below the heat exchanger.

[0010] According to the indoor unit of the air conditioner of the third aspect, at least a part of the outside air sucked from the outside through the outside air suction passage is provided outside the heat exchanger. By blowing the air into the room through the inflow portion, the pressure loss in the outside air suction passage, that is, the passage through which outside air is sucked, is reduced, and the ventilation amount can be easily increased.

The indoor unit of the air conditioner according to claim 4 is:
A turbo fan disposed in the casing, a heat exchanger disposed in the casing on the front side of the turbo fan, and a suction fan attached to the casing and spaced at a predetermined distance from the front side of the heat exchanger. An air conditioner indoor unit comprising: a front panel having a mouth, wherein the turbo fan blows air taken in from a front side through the heat exchanger from a front side in a radially outward direction with respect to an axis, The heat exchanger is provided with a thin portion having a smaller ventilation resistance than other portions, and is provided in the casing to communicate a space between the suction port of the front panel and the thin portion of the heat exchanger with the outside. An outside-air suction passage, an outside-air suction fan that is arranged in the outside-air suction passage, sucks outside air from outside to the front side of the thin-walled portion of the heat exchanger, and is arranged in the outside-air suction passage. A damper capable of adjusting the ventilation resistance of the outside air suction passage, and a damper arranged at a suction port of the front panel facing the thin portion of the heat exchanger, and adjusting a ventilation resistance of the suction port to form the turbo fan. A negative pressure adjusting louver for adjusting a negative pressure in a space between the suction port of the front panel and the heat exchanger at the time of driving is provided.

According to the indoor unit of the air conditioner of the fourth aspect, when the turbo fan is driven, the room air sucked from the suction port of the front panel passes through the heat exchanger having the thin portion. Blows radially outward with respect to the axis of the turbofan. Then, when the outside air suction fan arranged in the outside air suction passage is driven, the outside air sucked from outside the room and the room air sucked from the suction port of the front panel through the thin portion of the heat exchanger together with the turbo fan. Blows radially outward with respect to the axis. At this time, by adjusting the opening / closing angle of the damper, the ventilation resistance of the outside air suction passage is adjusted, and the exchange amount between the room air and the outside air is controlled. As described above, both the ventilation turbo fan and the outside air suction fan draw outside air from outside the room, and send the air into the room through the outside air suction passage, thereby increasing the amount of ventilation. In addition, since the outside air sucked from the outside passes through the thin-walled portion in which the number of stages of the heat exchanger and the like are reduced, the temperature and the humidity are adjusted to an appropriate value. It becomes possible to ventilate. Further, it is possible to prevent the room air and the outside temperature-adjusted outside air from being mixed on the downstream side of the thin-walled portion of the heat exchanger, and it is also possible to avoid dew and the like accompanying ventilation. Further, by controlling the rotation speed of the outside air suction fan, it is possible to adjust the flow rate of outside air passing through the outside air suction passage as needed, thereby adjusting the ventilation volume. Therefore,
It is not necessary to provide a separate ventilation fan, and it is possible to realize an indoor unit of an air conditioner having an excellent ventilation function capable of exchanging room air with outside air while air-conditioning the room without a sense of draft without deteriorating interior characteristics.

The indoor unit of the air conditioner according to claim 5 is
A turbo fan disposed in a casing, and a heat exchanger disposed in the casing on the front side of the turbo fan, wherein the air sucked in from the front side by the turbo fan via the heat exchanger is provided. An air conditioner indoor unit that blows radially outward with respect to the axis, an outside air suction port provided on the rear side of the turbo fan in the casing, and a louver or a louver for adjusting ventilation resistance of the outside air suction port. The turbo fan includes one of a damper and a hole that communicates the space on the front side with the space on the outside air suction port side.

According to the air conditioner indoor unit of the fifth aspect, when the turbo fan is rotated, the room air sucked from the inlet of the front panel is transferred to the shaft of the turbo fan via the heat exchanger. Spout radially outward. And, for example, by providing a hole on the wall to which the indoor unit is attached, the outside air suction port and the outside are connected, so that outside air can be sucked from outside through the hole and the outside air suction port, and provided on the turbo fan. The outside air is sucked into the front side of the turbo fan from the outside air suction port side through the hole provided, and the air is sucked from the front side through the heat exchanger in four directions radially outward with respect to the axis of the turbo fan. Blow out. At this time, by adjusting the opening / closing angle of the louver or the damper, the ventilation resistance of the outside air suction port is adjusted as necessary, and the exchange amount between the room air and the outside air is controlled. When ventilation is not performed, the inflow of outside air can be prevented by completely closing the louver or the damper. As described above, by using the turbo fan for sucking outside air, ventilation can be performed without newly providing a fan for sucking outside air. In addition, since all of the outside air sucked from outside the room is blown into the room without passing through the heat exchanger, the pressure loss in the path for sucking outside air is reduced, and the amount of ventilation can be increased. Therefore,
It is not necessary to provide a separate ventilation fan, and it is possible to realize an indoor unit of an air conditioner having an excellent ventilation function capable of exchanging room air with outside air while air-conditioning the room without a sense of draft without deteriorating interior characteristics.

Further, the indoor unit of the air conditioner according to claim 6 is:
A turbo fan disposed in a casing, and a heat exchanger disposed in the casing on the front side of the turbo fan, wherein the air sucked in from the front side by the turbo fan via the heat exchanger is provided. An air conditioner indoor unit that blows radially outward with respect to the axis, an outside air suction port provided on the rear side of the turbo fan in the casing, and a louver or a louver for adjusting ventilation resistance of the outside air suction port. And a first blade for blowing air sucked from a front side in a radially outward direction with respect to an axis, and the same direction as the first blade in a rotational direction. A second blade is provided which is curved and blows air taken in from the rear surface side through the outside air suction port outward in the radial direction with respect to the shaft.

According to the air conditioner indoor unit of the sixth aspect, when the turbo fan is driven, the room air sucked from the inlet of the front panel is transmitted to the turbo fan shaft via the heat exchanger. And blow out radially outward. And, for example, by providing a hole connecting the outside air suction port and the outside on the wall surface to which the indoor unit is attached, the outside air can be sucked from outside through the hole and the outside air suction port, and the turbo fan is used. The outside air is sucked in from the outside air suction port side on the rear side, and is blown outward in four directions radially outward with respect to the axis of the turbofan. At this time, by adjusting the opening and closing angle of the louver or damper,
If necessary, the ventilation resistance of the outside air inlet is adjusted to control the amount of exchange between room air and outside air. When ventilation is not performed, the inflow of outside air can be prevented by completely closing the louver or the damper. As described above, by using the turbo fan for sucking outside air, ventilation can be performed without newly providing a fan for sucking outside air. In addition, since all of the outside air sucked in from outside the room is blown into the room without passing through the heat exchanger,
The pressure loss in the path for sucking outside air is reduced, and the ventilation volume can be increased. Therefore, there is no need to provide a separate ventilation fan,
An indoor unit of an air conditioner having an excellent ventilation function capable of exchanging indoor air and outside air while air-conditioning the interior without a sense of draft can be realized at low cost without impairing the interior.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an indoor unit of an air conditioner according to the present invention will be described in detail with reference to the illustrated embodiments.

(First Embodiment) FIG. 1 is a sectional view of an indoor unit of an air conditioner according to a first embodiment of the present invention.
Reference numeral 0 denotes a casing having a rear surface attached to a wall thereof. Reference numeral 2 denotes a turbo fan disposed in the casing 1; reference numeral 3 denotes a heat exchanger disposed in the casing 1 on the front side of the turbo fan 2; A front panel 5 having a suction port 4a attached to a front side of the heat exchanger 3 is a partition plate 5 having a circular hole 5a disposed between the turbo fan 2 and the heat exchanger 3, and 6 is a casing. 1 is a turbo fan motor attached to the rear side of the turbo fan 2. In addition, four outlets 1a (FIG. 1) that blow air into the casing 1 in four directions in the vertical and horizontal directions, respectively.
Is shown in FIG. 1), and a flap 7 (only one is shown in FIG. 1) for controlling the wind direction of the blowout at each outlet 1a.
Are attached respectively.

By using one of the unused pipe holes provided at both lower corners of the casing 1, the wall 1
0, an outside air suction passage 8 is provided to communicate the space between the suction port 4a of the front panel 4 and the heat exchanger 3 with the outside. Inside the outside air suction passage 8, an outside air suction fan 11, an outside air suction motor 12 for driving the outside air suction fan 11, and a damper 13 capable of adjusting the ventilation resistance of the outside air suction passage 8 are provided. They are arranged in order from the outside. The opening and closing angle of the damper 13 may be manually adjusted, or the opening and closing angle may be adjusted by driving means such as a stepping motor. In FIG. 1, the outlet from which the air blown out from the turbo fan 2 on the lower side of the casing 1 blows downward is not shown, but the area other than the outside air suction passage 8 is provided on the lower side of the casing 1. An outlet is provided.

A plurality of negative pressure adjusting louvers 14 are attached to the suction port 4a of the front panel 4 so as to be openable and closable. By adjusting the opening and closing angle of the negative pressure adjusting louver 14, the negative pressure in the space between the suction port 4a of the front panel 4 and the heat exchanger 3 when the turbo fan 2 is driven is adjusted. The plurality of negative pressure adjusting louvers 14 may be manually adjusted in opening and closing angles, or may be adjusted in opening and closing angles by driving means such as a stepping motor. A first filter 1 is provided on the rear side of the suction port 4a of the front panel 4.
5 is detachably attached, and a second filter 16 is detachably attached to the front side of the heat exchanger 3.

In the indoor unit of the air conditioner configured as described above,
When the turbo fan 2 is driven by rotating the turbo fan motor 6, the room air sucked from the inlet 4 a of the front panel 4 is turbocharged through the heat exchanger 3 as shown by arrows R 11 and R 12. The air blows out from each air outlet 1a (only one is shown in FIG. 1) outward in the radial direction with respect to the axis of the fan 2. At this time, each of the flaps 7 is controlled so that the wind direction of the blowout is obliquely forward. Then, when the outside air suction motor 12 in the outside air suction passage 8 is rotated to drive the outside air suction fan 11, outside air sucked from outside flows in the direction of arrow R13. And then
The outside air sucked by the turbo fan 2 and the outside air suction fan 11 is directed radially outward with respect to the axis of the turbo fan 2 through the heat exchanger 3 together with the room air sucked from the suction port 4 a of the front panel 4. Blow out.

The ventilation resistance of the outside air suction passage 8 is adjusted by adjusting the opening / closing angle of the damper 13. Further, by adjusting the opening / closing angle of the negative pressure adjusting louver 14, the negative pressure in the space between the suction port 4a of the front panel 4 and the heat exchanger 3 is adjusted. And then
The damper 13 and the louver 14 for negative pressure adjustment control the amount of exchange between room air and outside air. Also,
When ventilation is not performed, the outside air suction motor 12 is stopped, and the outside air suction passage 8 is fully closed by the damper 13.

As described above, in the indoor unit of the air conditioner, the turbo fan 2 for blowing air and the fan 1 for sucking outside air are provided.
The air ventilation is increased by sucking outside air from the outside by both of them and sending it into the room through the outside air suction passage 8. In addition, since the outside air sucked in from the outdoor passes through the heat exchanger 3 and is adjusted to an appropriate temperature and humidity, it is possible to ventilate without feeling discomfort regardless of weather conditions. Become. Furthermore, it is possible to prevent the room air and the outside temperature-adjusted outside air from being mixed on the downstream side of the heat exchanger 3, and to avoid dew and the like due to ventilation. Moreover, the damper 13 arranged in the outside air suction passage 8 can change the ventilation resistance of the path for sucking outside air as necessary, thereby adjusting the ventilation volume. When ventilation is not performed, the outside air suction fan 11 is stopped, and the outside air suction passage 8 is completely closed by the damper 13, so that the inflow of outside air can be prevented.
Further, by controlling the number of revolutions of the outside air suction fan 11, the flow rate of outside air passing through the outside air suction passage 8 can be adjusted as necessary, and the ventilation amount can be adjusted.

Therefore, there is no need to provide a separate ventilation fan, the interior of the air conditioner has an excellent ventilation function that can exchange the room air with the outside air while air-conditioning the room without a sense of draft without deteriorating the interior. Machine can be realized.

When the pressure loss is reduced by increasing the opening / closing angle of the negative pressure adjusting louver 14, the negative pressure in the space between the inlet 4a of the front panel 4 and the heat exchanger 3 is reduced, and the negative pressure is reduced. If the opening / closing angle of the adjusting louver 14 is reduced to increase the pressure loss, the negative pressure in the space between the front panel 4 and the heat exchanger 3 increases, and the opening / closing angle of the negative pressure adjusting louver 14 is increased as necessary. By changing the amount, the amount of outside air sucked through the outside air suction passage 8 can be adjusted.

(Second Embodiment) FIG. 2 is a sectional view of an indoor unit of an air conditioner according to a second embodiment of the present invention. Reference numeral 21 denotes a casing having a rear surface attached to a wall surface of a wall 30;
Denotes a turbo fan arranged in the casing 21;
Reference numeral 3 denotes a heat exchanger disposed in the casing 21 on the front side of the turbo fan 22. Reference numeral 24 denotes suction ports 24a, 24 mounted on the casing 21 on the front side of the heat exchanger 23.
b, a front panel having a circular hole 25a disposed between the turbo fan 2 and the heat exchanger 23; 26, a turbo fan attached to the casing 21 on the rear side of the turbo fan 22; Motor. Also, the casing 21 has four vertical and horizontal directions.
Four outlets 21a (only one is shown in FIG. 2) are provided on each side, and flaps 27 (only one is shown in FIG. 2) for controlling the wind direction of the outlet are attached to each outlet 21a. I have.

An outside air inlet 35 is provided below the heat exchanger 23, and a space between the outside air inlet 35 and the front panel 4, the heat exchanger 23 and the front panel 24 are provided.
And a space between them is partitioned by a partition plate 29. Then, using one of the unused pipe holes provided at both lower corners of the casing 21, it penetrates the wall 30, and blows out the outlet 24 b of the front panel 24 and the lower side of the heat exchanger 23. An outside air suction passage 28 that communicates a space between the outside air inflow section 35 and the outside of the room is provided. Inside the outside air suction passage 28, an outside air suction fan 31, an outside air suction motor 32 for driving the outside air suction fan 31, and a damper 33 capable of adjusting ventilation resistance of the outside air suction passage 28 are provided. They are arranged in order from the outside. The above damper 3
In the step 3, the opening / closing angle may be adjusted manually, or the opening / closing angle may be adjusted by driving means such as a stepping motor. Further, in FIG. 2, the outlet from which the air blown out from the turbo fan 22 on the lower side of the casing 21 blows downward is not shown, but the area other than the outside air suction passage 28 is provided on the lower side of the casing 21. An outlet is provided.

The inlet 24b of the front panel 24
A plurality of louvers 34 for adjusting the negative pressure are openably and closably mounted in a region facing the outside air inlet 35 below the heat exchanger 23. By adjusting the opening / closing angle of the negative pressure adjusting louver 34, the suction port 24 of the front panel 4 is adjusted.
The negative pressure in the space between the a and the outside air inlet 35 below the heat exchanger 23 is adjusted. The plurality of negative pressure adjusting louvers 34
The opening / closing angle may be manually adjusted, or the opening / closing angle may be adjusted by driving means such as a stepping motor.
A first filter 36 is provided on the front side of the outside air inflow section 35.
Is detachably attached, and a second filter 37 is detachably attached to the front side of the heat exchanger 23.

In the indoor unit of the air conditioner having the above configuration,
When the turbo fan 22 is driven by rotating the turbo fan motor 26, the suction port 24a of the front panel 24 is opened.
As shown by arrows R21 and R22, the room air sucked from each outlet 21a (only one is shown in FIG. 1) is directed radially outward with respect to the axis of the turbo fan 22 through the heat exchanger 23. From the front panel 24 and the suction port 2
As shown by an arrow R23, the room air sucked from the air outlet 4b passes through each of the outlets 21 radially outward with respect to the axis of the turbofan 22 through the outside air inlet 35 below the heat exchanger 23.
a (only one is shown in FIG. 1). At this time,
Each of the flaps 27 is controlled so that the wind direction of the blowout is obliquely forward. Then, when the outside air suction motor 32 in the outside air suction passage 28 is rotated to drive the outside air suction fan 31, the outside air sucked from outside flows in the direction of arrow R24. Then, the outside air sucked by the turbo fan 22 and the outside air suction fan 31 is supplied to the outside air inflow section 3 on the lower side of the heat exchanger 23 together with the room air sucked from the suction port 24b of the front panel 24.
5, the air blows in four directions radially outward with respect to the axis of the turbo fan 22.

The ventilation resistance of the outside air suction passage 28 is adjusted by adjusting the opening / closing angle of the damper 33. Further, by adjusting the opening / closing angle of the negative pressure adjusting louver 34, the suction port 2 of the front panel 24 can be adjusted.
The negative pressure in the space between 4b and the heat exchanger 23 is adjusted. The damper 33 and the louver 34 for adjusting the negative pressure control the amount of exchange between room air and outside air.
When ventilation is not performed, the outside air suction motor 3
2 is stopped, and the outside air suction passage 28 is fully closed by the damper 33.

As described above, in the indoor unit of the air conditioner, the outside air is sucked from the outside by both the blower turbo fan 22 and the outside air suction fan 11, and is sent into the room through the outside air suction passage 28. Increases ventilation. Further, the ventilation amount can be adjusted by changing the ventilation resistance of the path for sucking the outside air as required by the damper 33 arranged in the outside air suction passage 28. When ventilation is not performed, the outside air suction fan 31 is stopped, and the outside air suction passage 28 is completely closed by the damper 33, so that the inflow of outside air can be prevented. Further, the outside air suction fan 3
By controlling the number of rotations of 1, it is possible to adjust the flow rate of the outside air passing through the outside air suction passage 8 as needed, thereby adjusting the ventilation volume.

Therefore, there is no need to provide a separate ventilation fan, the interior of an air conditioner having an excellent ventilation function can be exchanged between the room air and the outside air at a low cost without damaging the interior and at the same time air-conditioning the room without a sense of draft. Machine can be realized.

When the opening / closing angle of the negative pressure adjusting louver 34 is increased to reduce the pressure loss, the front panel 24
When the negative pressure in the space between the suction port 24b and the outside air inflow portion 35 is reduced and the opening / closing angle of the negative pressure adjusting louver 34 is reduced to increase the pressure loss, the space between the front panel 24 and the outside air inflow portion 35 is reduced The negative pressure in the space increases, and the opening / closing angle of the negative pressure adjusting louver 34 is changed as necessary, whereby the amount of outside air sucked through the outside air suction passage 28 can be adjusted.

The outside air sucked from the outside through the outside air suction passage 28 is blown into the room through an outside air inflow portion 35 provided below the heat exchanger 23, so that the outside air suction passage 28 is provided. Pressure loss is reduced, and the ventilation volume can be easily increased.

(Third Embodiment) FIG. 3 is a sectional view of an indoor unit of an air conditioner according to a third embodiment of the present invention. Reference numeral 41 denotes a casing having a rear surface attached to a wall surface of a wall 50;
Are the turbo fan, 4 arranged in the casing 41,
Reference numeral 3 denotes a heat exchanger disposed in the casing 41 on the front side of the turbo fan 22. Reference numeral 44 denotes suction ports 44a and 44 mounted on the casing 41 on the front side of the heat exchanger 43.
b, a partition plate having a circular hole 45a disposed between the turbo fan 42 and the heat exchanger 43; 46, a turbo fan attached to the casing 41 on the rear side of the turbo fan 42 Motor.
Further, the casing 41 is provided with four outlets 41a (only one is shown in FIG. 3) for blowing in four directions in the up-down direction and the left-right direction, and the flaps 47 ( (Only one is shown in FIG. 3).

Further, a thin portion 43a having a smaller ventilation resistance than other portions is provided below the heat exchanger 43, and a space between the thin portion 43a and the suction port 44b of the front panel 44 is formed by heat and heat. A space between the exchanger 43 and the front panel 44K suction port 44b is partitioned by a partition plate 49. Then, by using one of the unused pipe holes provided at both lower corners of the casing 41, it penetrates the wall 50, and the suction port 44 b of the front panel 44 and the lower side of the heat exchanger 43. An outside air suction passage 48 that communicates the space between the thin portion 43a and the outside of the room is provided. Inside the outside air suction passage 48, an outside air suction fan 51, an outside air suction motor 52 for driving the outside air suction fan 51, and a damper 53 capable of adjusting the ventilation resistance of the outside air suction passage 48 are provided. They are arranged in order from the outside. The opening and closing angle of the damper 53 may be manually adjusted, or the opening and closing angle may be adjusted by driving means such as a stepping motor. Further, in FIG. 3, an outlet from which the air blown out from the turbo fan 42 on the lower side of the casing 41 blows downward is not shown, but the air outlet on the lower side of the casing 41 other than the outside air suction passage 8 is provided. An outlet is provided.

The suction port 44b of the front panel 44
A plurality of louvers 54 for adjusting negative pressure are attached to the opening and closing freely. By adjusting the opening / closing angle of the negative pressure adjusting louver 54, the negative pressure in the space between the suction port 44b of the front panel 44 and the thin portion 43a below the heat exchanger 43 when the turbo fan 42 is driven. To adjust. The plurality of negative pressure adjusting louvers 54 may be manually adjusted in opening and closing angles, or may be adjusted in opening and closing angles by driving means such as a stepping motor. Further, the first filter 55 is detachably attached to the front side of the thin portion 43a below the heat exchanger 43, and the second filter 56 is attached to the front side of the region other than the thin portion 43a of the heat exchanger 43. Removably attached.

In the indoor unit of the air conditioner having the above configuration,
When the turbo fan 42 is driven by rotating the turbo fan motor 46, the suction port 44 a of the front panel 44 is opened.
As shown by the arrow R31, the room air sucked from
Each outlet 41a (only one is shown in FIG. 3) radially outward with respect to the axis of the turbo fan 42 via the heat exchanger 43.
As shown by an arrow R32, the room air blown out from the suction port 44ab of the front panel 44 radially flows through the thin portion 43a on the lower side of the heat exchanger 43 with respect to the axis of the turbo fan 42. Air is blown outward from each outlet 41a (only one is shown in FIG. 3). At this time, each of the flaps 47 is controlled so that the wind direction of the blowout is obliquely forward. Then, when the outside air suction motor 42 in the outside air suction passage 48 is rotated to drive the outside air suction fan 41, the outside air sucked from outside flows in the direction of arrow R33. Then, the turbo fan 42
The outside air sucked by the outside air suction fan 41 and the room air sucked from the suction port 44b of the front panel 44 and the shaft of the turbo fan 42 via the thin portion 43a on the lower side of the heat exchanger 43 together with the room air sucked. Blows outward in the radial direction in four directions.

The ventilation resistance of the outside air suction passage 48 is adjusted by adjusting the opening and closing angle of the damper 53. Further, by adjusting the opening / closing angle of the negative pressure adjusting louver 54, the suction port 4 of the front panel 44 can be adjusted.
The negative pressure in the space between 4a and the heat exchanger 43 is adjusted. The damper 53 and the louvers 54 for negative pressure adjustment control the amount of exchange between room air and outside air. When ventilation is not performed, the outside air suction motor 52 is used.
Is stopped, and the outside air suction passage 48 is fully closed by the damper 53.

As described above, in the indoor unit of the air conditioner, the outside air is sucked from the outside by both the blower turbo fan 42 and the outside air suction fan 51, and is sent into the room through the outside air suction passage 48. Increases ventilation. In addition, the outside air sucked from the outdoor is adjusted to an appropriate temperature and humidity by passing through the thin portion 43a of the heat exchanger 43, so that regardless of weather conditions,
Ventilation can be performed without feeling discomfort.
Further, it is possible to prevent the room air and the outside temperature-adjusted outside air from being mixed on the downstream side of the thin portion 43a of the heat exchanger 43, and it is possible to prevent dew or the like due to ventilation. In addition, the damper 53 arranged in the outside air suction passage 48 can change the ventilation resistance of the path for sucking outside air as needed to adjust the ventilation volume. When the ventilation is not performed, the outside air suction fan 51 is stopped, and the outside air suction passage 48 is completely closed by the damper 53, so that the inflow of outside air can be prevented. Further, by controlling the rotation speed of the outside air suction fan 51, the flow rate of outside air passing through the outside air suction passage 48 can be adjusted, and the ventilation amount can be adjusted.

Therefore, there is no need to provide a separate ventilation fan, the interior of the air conditioner has an excellent ventilation function that can exchange the room air with the outside air while air-conditioning the room without a feeling of draft without deteriorating the interior. Machine can be realized.

(Fourth Embodiment) FIG. 4 is a sectional view of an indoor unit of an air conditioner according to a fourth embodiment of the present invention.
Is a turbo fan arranged in the casing 61, 6
Reference numeral 3 denotes a heat exchanger disposed in the casing 61 on the front side of the turbo fan 62; 64, a front panel having a suction port 64a mounted on the casing 61 on the front side of the heat exchanger 63; A partition plate having a circular hole 65a disposed between the fan 62 and the heat exchanger 63;
66 is a turbo fan motor attached to the casing 61 on the rear side of the turbo fan 62. The turbo fan motor is fixed to the casing 61 by a mounting member (not shown). In addition, the casing 61 is provided with four outlets 61a and 61b (only one is shown in FIG. 4) for blowing in four directions in the vertical and horizontal directions, respectively.
Flaps 67A, 67B (only two are shown in FIG. 4) for controlling the direction of the blown air are attached to each of the outlets 61a, 61b.

An outside air suction port 60 is provided on the rear side of the casing 61, and a hole 70a is provided on the wall 70 at a position facing the outside air suction port 60. A louver 74 is attached to the outside of the hole 70a of the wall 70 so as to be openable and closable. Further, a filter 75 is removably mounted in the hole 70a of the wall 70. The opening and closing angle of the louver 74 may be manually adjusted, or the opening and closing angle may be adjusted by driving means such as a stepping motor. Also,
The louver 74 may be attached to the outside air inlet 60, and a damper may be used instead of the louver 74.
In the indoor unit of the air conditioner having the above configuration, when the turbo fan 62 is driven by rotating the turbo fan motor 66, the room air sucked from the suction port 64a of the front panel 64 is indicated by arrows R41 and R42. As described above, each of the outlets 61a, 61b (only two are shown in FIG. 4) radially outward with respect to the axis of the turbo fan 62 via the heat exchanger 63.
Blow out from. At this time, each of the flaps 67A, 67
B is controlled so that the wind direction of the balloon is obliquely forward. Then, outside air sucked from outside through the hole 70a of the wall surface 70 and the outside air suction port 60 flows in the directions of arrows R43 to R45 due to the negative pressure generated in the space near the front side of the turbofan 62. Then, the outside air sucked by the turbo fan 62 flows in four directions radially outward with respect to the axis of the turbo fan 62 through the heat exchanger 63 together with the room air sucked from the suction port 64a of the front panel 64. Blow out.

Then, by adjusting the opening / closing angle of the louver 74, the ventilation resistance of the outside air suction port 60 is adjusted, and the exchange amount between the room air and the outside air is controlled. When ventilation is not performed, the louver 74 is fully closed.

As described above, in the indoor unit of the air conditioner, by using the turbo fan 62 for sucking outside air, ventilation can be performed without providing a new fan for sucking outside air. Further, since all of the outside air sucked from outside the room is blown into the room without passing through the heat exchanger 63, the pressure loss of the path for sucking the outside air is reduced, and the amount of ventilation can be increased. In addition, the louver 74 arranged in the outside air suction port 60 can change the ventilation resistance of the path for sucking outside air as needed, thereby adjusting the ventilation volume. When ventilation is not performed, the outside air suction port 60 is fully closed by the louver 74,
The inflow of outside air can be prevented.

Therefore, there is no need to provide a separate ventilation fan, the interior of the air conditioner having an excellent ventilation function can be exchanged between the room air and the outside air while air-conditioning the room without a sense of draft without deteriorating the interior. Machine can be realized.

(Fifth Embodiment) FIG. 5 is a sectional view of an indoor unit of an air conditioner according to a fifth embodiment of the present invention. Reference numeral 81 denotes a casing having a rear surface attached to the wall surface of a wall 90;
Denotes a turbo fan arranged in the casing 81, 8
Reference numeral 3 denotes a heat exchanger disposed in the casing 81 on the front side of the turbo fan 82; 84, a front panel having a suction port 84a mounted on the casing 81 on the front side of the heat exchanger 83; A partition plate having a circular hole 85a disposed between the fan 82 and the heat exchanger 83;
Reference numeral 86 denotes a turbo fan motor attached to the casing 81 on the rear surface side of the turbo fan 82 via an attachment member 96.

In the turbo fan 82, the annular member 82a is connected by a plurality of first blades 89A at a predetermined interval to the front side of a disk member 82b whose center is curved forward, and the annular member 82c The disc member 82b is connected by a plurality of second blades 89B at a predetermined interval on the rear surface side. The first blade 8A and the second blade 89B
Is curved in the same direction in the rotation direction, and when the turbo fan 82 rotates, on the front side of the disk member 82b, air sucked from the front is blown radially outward with respect to the axis of the turbo fan 82, On the rear side of the disk member 82b, the air sucked from behind is blown radially outward with respect to the axis of the turbo fan 82.

Further, four outlets 81a, 81 which blow air into the casing 81 in four directions, up and down and left and right, respectively.
1b (only two are shown in FIG. 5)
a, 81b, flaps 87A, 8 for controlling the wind direction of the balloon
7B (only two are shown in FIG. 5).
Further, the casing 81 is provided with four outlets 81c, 81d (only two are shown in FIG. 5) for blowing in four directions in the up-down direction and the left-right direction, respectively, and controls the wind direction of the blowout to each outlet 81c, 81d. Flaps 88A and 88B (only two are shown in FIG. 5).

An outside air suction port 80 is provided on the rear side of the casing 81, and a wall 90 facing the outside air suction port 80 is provided.
A hole 90a is provided at the position. The mounting member 96 for mounting the turbofan motor 86 is provided with a plurality of holes 97 communicating the space on the rear surface side of the disk member 82b of the turbofan 82 with the space on the outside air suction port 80 side. A louver 94 is attached to the outside of the hole 90a of the wall 90 so as to be openable and closable. The hole 90a of the wall 90
A filter 95 is removably mounted therein. The filter 95 is provided with a plurality of holes 97 of the mounting member 96.
It may be installed anywhere as long as it is upstream of. The opening and closing angle of the louver 94 may be manually adjusted, or the opening and closing angle may be adjusted by driving means such as a stepping motor. Further, the louver 94 may be attached to the outside air suction port 80 or the plurality of holes 97 of the attachment member 96. In this case, addition of a new member is small and the configuration is simplified. Further, a damper may be used instead of the louver 94.

In the indoor unit of the air conditioner having the above configuration,
When the turbo fan 82 is driven by rotating the turbo fan motor 86, the suction port 84a of the front panel 84
As shown by arrows R51 and R52, the indoor air sucked from the air outlets 81a and 81b (only two air outlets in FIG. 4) are directed radially outward with respect to the axis of the turbo fan 82 through the heat exchanger 83. (Shown). At this time, each of the flaps 87A and 87B is controlled so that the wind direction of the blowout is obliquely forward. Further, the outside air is sucked from outside by the turbo fan 82 through the hole 90 a of the wall surface 90 and the outside air suction port 80, and the sucked outside air passes through the plurality of holes 97 of the mounting member 96 and the arrows R 53, R 54. Flows in the direction of Then, the sucked outside air is blown out from outlet 8
The air is blown outward in four directions radially outward with respect to the axis of the turbo fan 82 via 1c and 81d.

Then, by adjusting the opening / closing angle of the louver 94, the ventilation resistance of the outside air suction port 80 is adjusted as necessary, and the amount of exchange between room air and outside air is controlled. When ventilation is not performed, the louver 9 is used.
4 is fully closed.

As described above, in the indoor unit of the air conditioner, by using the turbo fan 82 for sucking outside air, ventilation can be performed without providing a new fan for sucking outside air. In addition, since all of the outside air sucked from outside the room is blown into the room without passing through the heat exchanger 83, the pressure loss in the path for sucking outside air is reduced, and the amount of ventilation can be increased. In addition, the louvers 94 arranged in the outside air suction port 80 can change the ventilation resistance of the path for sucking outside air as needed to adjust the ventilation volume. When ventilation is not performed, the outside air suction port 80 is completely closed by the louver 94,
The inflow of outside air can be prevented.

Therefore, there is no need to provide a separate ventilation fan, the interior of the air conditioner has an excellent ventilation function that can exchange the room air with the outside air while air-conditioning the room without a sense of draft without deteriorating the interior. Machine can be realized.

In the first to fifth embodiments, the outside air sucked from the outdoor is supplied to the second filter 16 and the first filter 3.
6, first filter 55, filter 75 and filter 95
And is blown out of the room, thereby preventing indoor air pollution (pollen, soot, toxic gas, etc.) due to ventilation. When the outside air is clean depending on the use environment, the ventilation rate can be increased by using a filter having a small pressure loss such that insects or the like do not enter the outside air suction passage or the outside air suction port.

In the first to third embodiments, one of the unused pipe holes provided at the lower corners of the casings 1, 21, 41 is used, and the outside air suction passages 8, Although 28 and 48 are provided, the outside air suction passage may be provided in any part of the casing, or both the unused piping hole and the separately provided hole in the casing may be used for the outside air suction passage. When one of the unused piping holes is used for the outside air suction passage, the outside air suction passage can be provided without complicating the main body structure.

In the first to third embodiments, the outside air suction fans 11, 31, and 51 are rotated so as to suck the outside air from the outside. However, the outside air suction fans may be rotated in reverse. In this case, the indoor pollutants can be discharged to the outside together with the indoor air.

Further, in the first to third embodiments, the sucked outside air passes through the second filter 16 and the first filter 36 installed adjacent to the heat exchangers 3, 23, 43. It is not necessary to provide a filter in the suction passages 8, 28, 48, and the cleanability of the filter is greatly improved.

In the first and second embodiments, the negative pressure adjusting louvers 14, 34, 54 are attached to the suction ports 4a, 24b, 44b of the front panels 4, 24, 44. There is no need for a louver. In addition, the fourth and fifth
In the embodiment, the louvers 74 and 94 are provided outside the holes 70a and 90a provided in the walls 70 and 90, however, the louvers may be provided on the indoor side of the hole of the wall, on the outside of the hole, or inside the hole.

[0060]

As is apparent from the above description, the air conditioner indoor unit according to the first aspect of the present invention has a turbo fan disposed in a casing and a heat exchanger disposed in the casing in front of the turbo fan. And, on the casing, a front panel having a suction port is attached at a predetermined interval on the front side of the heat exchanger, and the air sucked from the front side via the heat exchanger by the turbofan through the heat exchanger to the shaft. The casing is provided with an outside air suction passage communicating the space between the suction port of the front panel and the heat exchanger with the outside, and the outside air suction passage is provided to the outside air passage through the casing. An outside air suction fan that sucks in outside air is disposed on the front side of the container, and is disposed in the outside air suction passage. The ventilation resistance of the outside air suction passage can be adjusted by a damper.

Therefore, according to the indoor unit of the air conditioner according to the first aspect of the present invention, both the blower turbo fan and the outside air suction fan suck outside air from outside the room, and send it into the room through the outside air suction passage. In addition to increasing the ventilation volume, the outside air sucked in from the outside is adjusted to an appropriate temperature and humidity by passing through the heat exchanger, so regardless of weather conditions, without feeling discomfort, It becomes possible to ventilate. Further, it is possible to prevent the room air and the outside temperature-adjusted outside air from being mixed on the downstream side of the heat exchanger, and it is also possible to avoid dew and the like due to ventilation. Further, the ventilation resistance can be easily adjusted by changing the ventilation resistance of the outside air suction passage as needed by the damper arranged in the outside air suction passage. Further, by controlling the rotation speed of the outside air suction fan, the flow rate of outside air passing through the outside air suction passage can be adjusted, and the ventilation amount can be easily adjusted. Therefore, there is no need to provide a separate ventilation fan, realizing an indoor unit of an air conditioner with an excellent ventilation function that can exchange indoor air and outside air while air-conditioning the interior without a sense of draft without compromising the interior characteristics. can do.

The indoor unit of the air conditioner according to the second aspect of the present invention is the indoor unit of the air conditioner according to the first aspect, wherein the suction unit is provided with a louver for adjusting negative pressure arranged at a suction port of the front panel. The airflow resistance of the mouth is adjusted to adjust the negative pressure in the space between the front panel and the heat exchanger when the turbo fan is driven.

Therefore, according to the indoor unit of the air conditioner according to the second aspect of the present invention, the negative pressure adjusting louvers arranged at the suction port of the front panel allow the air sucked from the suction port when the turbo fan is driven. By adjusting the pressure loss and adjusting the negative pressure in the space between the inlet of the front panel and the heat exchanger, it is possible to adjust the amount of outside air sucked through the outside air suction passage.

The indoor unit of the air conditioner according to the invention of claim 3 is the indoor unit of the air conditioner of claim 1 or 2, wherein an outside air inflow portion is provided below the heat exchanger. .

Therefore, according to the indoor unit of the air conditioner of the third aspect of the present invention, at least a part of the outside air sucked from outside through the outside air suction passage is provided below the heat exchanger. By blowing the air into the room through the provided outside air inflow portion, the pressure loss of the path through which the outside air is sucked is reduced, and the amount of ventilation can be easily increased.

In the indoor unit of the air conditioner according to the present invention, a turbo fan is arranged in a casing, and a heat exchanger is arranged in the casing in front of the turbo fan.
At the casing, a front panel having a suction port is attached at a predetermined interval on the front side of the heat exchanger, and the air sucked from the front side via the heat exchanger by the turbo fan from the front side to the shaft. Along with blowing out radially outward, the heat exchanger is provided with a thin portion having a smaller ventilation resistance than other portions, and the casing is provided with a space between the inlet of the front panel and the thin portion of the heat exchanger. An outside air suction passage communicating with the outside is provided, and an outside air suction fan that sucks outside air from the outside to the front side of the thin portion of the heat exchanger is disposed in the outside air suction passage, and a ventilation resistance is provided in the outside air suction passage. Adjusting the damper, and adjusting the ventilation resistance of the suction port by a negative pressure adjusting louver arranged at the suction port of the front panel facing the thin portion of the heat exchanger, the turbo And adjusts the negative pressure in the space between the suction port of the front panel at § emission driving and the heat exchanger.

Therefore, according to the indoor unit of the air conditioner of the invention, the outside air is sucked from the outside by both the turbo fan for blowing air and the outside air suction fan.
Ventilation is increased by sending the air into the room through the outside air intake passage. Also, the outside air sucked from outside
Since the temperature and humidity are adjusted appropriately by passing through the thin portion of the heat exchanger, it is possible to perform ventilation without feeling uncomfortable regardless of weather conditions. Further, it is possible to prevent the room air and the outside temperature-adjusted outside air from being mixed on the downstream side of the thin-walled portion of the heat exchanger, and it is also possible to avoid dew and the like accompanying ventilation. Further, the ventilation amount can be easily adjusted by changing the ventilation resistance of the path for sucking the outside air as needed by the damper arranged in the outside air suction passage. In addition, by controlling the rotation speed of the outside air suction fan, the flow rate of outside air passing through the outside air suction passage can be adjusted, and the ventilation amount can be easily adjusted. Therefore, there is no need to provide a separate ventilation fan, realizing an indoor unit of an air conditioner with an excellent ventilation function that can exchange indoor air and outside air while air-conditioning the interior without a sense of draft without compromising the interior characteristics. can do.

The indoor unit of the air conditioner according to the present invention is arranged such that a turbo fan is disposed in a casing, and a heat exchanger is disposed in the casing in front of the turbo fan. The air sucked from the front side via the heat exchanger is blown radially outward with respect to the shaft, and the casing is provided with an outside air suction port on the rear side of the turbo fan to adjust the ventilation resistance of the outside air suction port. With either louver or damper,
The turbo fan has a hole that communicates a space on the front side with a space on the outside air suction port side.

Therefore, according to the indoor unit of the air conditioner of the fifth aspect of the present invention, by using the turbo fan for sucking outside air, ventilation can be performed without newly providing a fan for sucking outside air. In addition, since all of the outside air sucked from outside the room is blown into the room without passing through the heat exchanger, the pressure loss in the path for sucking outside air is reduced, and the amount of ventilation can be increased. Further, the ventilation can be easily adjusted by changing the ventilation resistance of the path for sucking the outside air as required by the louver or the damper. Therefore, there is no need to provide a separate ventilation fan, realizing an indoor unit of an air conditioner with an excellent ventilation function that can exchange indoor air and outside air while air-conditioning the interior without a sense of draft without compromising the interior characteristics. can do.

In the indoor unit of the air conditioner according to the present invention, a turbo fan is arranged in a casing, and a heat exchanger is arranged in the casing in front of the turbo fan. A louver that blows air sucked in from a front side through a heat exchanger in a radially outward direction with respect to an axis, provides an outside air suction port on the rear side of the turbo fan in the casing, and adjusts ventilation resistance of the outside air suction port. Or one of the dampers, wherein the turbo fan has a first blade for blowing air sucked from the front side in a radially outward direction with respect to an axis, and the same rotation direction as the first blade. And a second blade for blowing air sucked from the rear surface side through the outside air suction port outward in a radial direction with respect to the shaft.

Therefore, according to the indoor unit of the air conditioner of the sixth aspect of the present invention, by using the turbo fan for sucking the outside air, ventilation can be performed without newly providing an outside air suction fan. In addition, since all of the outside air sucked from outside the room is blown into the room without passing through the heat exchanger, the pressure loss in the path for sucking outside air is reduced, and the amount of ventilation can be increased. Further, the ventilation can be easily adjusted by changing the ventilation resistance of the path for sucking the outside air as required by the louver or the damper. Therefore, there is no need to provide a separate ventilation fan, realizing an indoor unit of an air conditioner with an excellent ventilation function that can exchange indoor air and outside air while air-conditioning the interior without a sense of draft without compromising the interior characteristics. can do.

[Brief description of the drawings]

FIG. 1 is a sectional view of an indoor unit of an air conditioner according to a first embodiment of the present invention.

FIG. 2 is a sectional view of an indoor unit of an air conditioner according to a second embodiment of the present invention.

FIG. 3 is a sectional view of an indoor unit of an air conditioner according to a third embodiment of the present invention. .

FIG. 4 is a sectional view of an indoor unit of an air conditioner according to a fourth embodiment of the present invention.

FIG. 5 is a sectional view of an indoor unit of an air conditioner according to a fifth embodiment of the present invention.

FIG. 6 is a diagram showing a state in which an indoor unit using a turbo fan that blows air drawn in from the front side outward in a radial direction with respect to an axis is attached to a wall surface in a room.

7 (A) is a diagram showing a state of airflow of an indoor unit of the conventional air conditioner, and FIG. 7 (B) is a diagram showing a state of airflow of an indoor unit of the air conditioner shown in FIG. is there.

[Explanation of symbols]

1, 21, 41, 61, 81 ... casing, 2, 22, 42, 62, 82 ... turbo fan, 3, 23, 43, 63, 83 ... heat exchanger, 4, 24, 44, 64, 84 ... front surface Panels, 4a, 24a, 24b, 44a, 44b, 64a, 84a ... suction ports, 5, 25, 45, 65, 85 ... partition plates, 6, 26, 46, 66, 86 ... turbofan motors, 7, 27 , 47,67A, 67B, 87A, 87B, 88A, 8
8B: flap, 8, 28, 48: outside air suction passage, 10, 30, 50, 70, 90 ... wall, 11, 31, 51: outside air suction fan, 12, 32, 52 ... outside air suction motor, 13, 33, 53 ... damper, 14, 34, 54, 74, 94 ... louver, 15, 36, 55 ... first filter, 16, 37, 56 ... second filter, 60, 80 ... outside air suction port.

Claims (6)

[Claims] 1. A turbo fan (2, 22) disposed in a casing (1, 21), and a thermal fan disposed in a front side of the turbo fan (2, 22) in the casing (1, 21). An exchanger (3, 23) and a suction port (4a, 24a, 24b) attached to the casing (1, 21) at a predetermined interval on the front side of the heat exchanger (3, 23). Front panel
(4, 24), wherein the turbo fan (2, 22) blows air sucked from the front side through the heat exchanger (3, 23) from the front side radially outward with respect to the shaft. An indoor unit of the machine, wherein the front panel is provided in the casing (1, 21).
(4, 24) and the heat exchanger (3, 2).
3) The outside air intake passage which connects the space between the outside and the outdoor
(8, 28), an outside air suction fan (11, 31) disposed in the outside air suction passage (8, 28), and sucking outside air from outside into the front side of the heat exchanger (3, 23); A damper (1) arranged in the outside air suction passage (8, 28) and capable of adjusting the ventilation resistance of the outside air suction passage (8, 28).
An indoor unit for an air conditioner, comprising: (3, 33). 2. The air conditioner indoor unit according to claim 1, wherein the airflow resistance of the suction port (4a, 24b) is arranged at the suction port (4a, 24b) of the front panel (4, 24). To adjust the front panel (4, 2) when the turbo fan (2, 22) is driven.
Negative pressure adjusting louvers (14, 24) for adjusting the negative pressure in the space between the suction ports (4a, 24b) of the heat exchanger (24) and the heat exchangers (3, 23).
34) An indoor unit of an air conditioner, comprising: 3. The air conditioner indoor unit according to claim 1, wherein an outside air inlet (35) is provided below the heat exchanger (23). Indoor unit. 4. A turbo fan (42) arranged in a casing (41), and a heat exchanger (43) arranged in the casing (41) in front of the turbo fan (42).
The heat exchanger attached to the casing (41)
At a predetermined interval in front of (3,23), the suction port (44a,
And a front panel (44) having a heat exchanger (4b) from the front side by the turbo fan (42).
An air conditioner indoor unit that blows air sucked in through the 3) radially outward with respect to an axis, wherein the heat exchanger (43) has a thin wall portion (43a) having a lower ventilation resistance than other portions. And the front panel (4) provided on the casing (41).
4) The suction port (44b) and the thin portion of the heat exchanger (43)
(43a), the outside air suction passage (48) communicating the space between the outside and the outside, and the outside air suction passage (48) are disposed in the thin portion (43a) of the heat exchanger (43) from outside. And a damper (53) arranged in the outside air suction passage (48) and capable of adjusting the ventilation resistance of the outside air suction passage (48). The turbo fan is disposed at a suction port (44b) of the front panel (44) opposed to the thin portion (43a) of the heat exchanger (43), and adjusts a ventilation resistance of the suction port (44b). (42) The suction port (44) of the front panel (44) during driving
An indoor unit for an air conditioner, comprising a negative pressure adjusting louver (54) for adjusting a negative pressure in a space between the heat exchanger (b) and the heat exchanger (43). 5. A turbo fan (72) arranged in a casing (71), and a heat exchanger (73) arranged in the casing (71) in front of the turbo fan (72). An indoor unit of an air conditioner that blows air sucked from the front side through the heat exchanger (73) from the front side by the turbofan (2) outward in a radial direction with respect to an axis, wherein the casing (71 ), An outside air suction port (60) provided on the rear side of the turbo fan (72), and a louver for adjusting ventilation resistance of the outside air suction port (60).
(74) or a damper, wherein the turbo fan (72) has a hole (76-79) for communicating the space on the front side with the space on the outside air suction port (60) side. An indoor unit of an air conditioner characterized by the following. 6. A turbo fan (82) arranged in a casing (81), and a heat exchanger (83) arranged in the casing (81) in front of the turbo fan (82). An indoor unit of an air conditioner that blows air sucked from the front side through the heat exchanger (83) from the front side by the turbofan (82) outward in a radial direction with respect to an axis, wherein the casing (1) ), An outside air suction port (80) provided on the rear side of the turbo fan (82), and a louver for adjusting ventilation resistance of the outside air suction port (80).
(94) or a damper, wherein the turbofan (82) has a first blade for blowing air sucked from the front side outward in a radial direction with respect to an axis.
(89A) and the first blade (89A) are curved in the same direction as the rotation direction, and blow out air sucked in from the rear side through the outside air suction port (80) radially outward with respect to the shaft. An indoor unit of an air conditioner, comprising: the second blade (89B).