JP2004278923A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner capable of easily cleaning a filter of an indoor machine, exhausting the foul air in the room to the outside of the room, and improving the amenity. <P>SOLUTION: In this air conditioner, a sucking and exhausting device is mounted in an indoor machine of the air conditioner having at least a heat exchanger and a blower, a suction duct communicated with the sucking and exhausting device and an exhaust duct for exhausting the air from the sucking and exhausting device to the outside of the room are mounted, and the sucking and exhausting device is composed of a centrifugal blower containing a motor, and a casing surrounding the centrifugal blower. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an indoor unit of an air conditioner provided with a suction and exhaust device.
[0002]
[Prior art]
As is well known, an air conditioner that blows air into a room after cooling or heating the air sucked by a fan with a heat exchanger to prevent dust floating in the sucked air from entering the inside of the main body of the air conditioner. In addition, an air filter is provided on the back surface of the suction port of the air conditioner, and the air filter is detachably configured so that the attached dust can be cleaned by hand.
[0003]
In addition, as an air conditioner in which the air filter is easily cleaned, a filter device including a band-shaped filter fed and wound by a motor, a dust removing member for the filter, and a dust box for storing dust attached to the filter is provided. There has been a configuration in which it is provided on a back surface of an intake port of an intake panel of an indoor unit (for example, see Patent Document 1).
[0004]
[Patent Document 1]
JP 2001-99479 A
[Problems to be solved by the invention]
However, the air filter according to the known technique requires periodic maintenance such that the air filter is removed from the air conditioner according to the frequency of use of the air conditioner, and the attached dust is cleaned with water or a vacuum cleaner. Furthermore, if the periodic maintenance is not performed, periodic maintenance is required to clean dust stored in the dust box where dust has accumulated on the air filter. That is, maintenance for cleaning dust accumulated on the air filter of the air conditioner has always been required.
[0006]
Dust that accumulates in the air filter has a problem that the air flow resistance of the air filter through which the sucked air penetrates increases, thereby lowering the COP of the air conditioner / indoor unit and increasing power consumption.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned conventional problems, an air conditioner of the present invention is an indoor unit of an air conditioner having at least a heat exchanger and a blower, wherein a suction and exhaust device for performing suction and exhaust is disposed, and the suction and exhaust device is provided. And a discharge duct for discharging air from the suction and exhaust device to the outside of the room. The suction and exhaust device is formed of a centrifugal blower having a built-in motor and a casing surrounding the centrifugal blower. Things. Because the centrifugal blower has a high pressure type, it has a static pressure sufficient to discharge dust to the outside through the above-described path.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
An air conditioner according to an embodiment of the first invention is an indoor unit of an air conditioner having at least a heat exchanger and a blower, and is provided with a suction and exhaust device for performing suction and exhaust, and communicates with the suction and exhaust device. It has a suction duct and an exhaust duct for exhausting air from the suction and exhaust device to the outside of the room, and the suction and exhaust device is formed of a centrifugal blower having a built-in motor and a casing surrounding the centrifugal blower. And
[0009]
With this configuration, because the centrifugal blower is a high-pressure type, it passes through air in the order of a suction duct, a suction / exhaust device with a built-in centrifugal blower, and an exhaust duct, and has a static air that only exhausts dirty air in the room to the outside. It has enough pressure. However, due to the structure of the indoor unit, the suction and exhaust device is required to rotate the centrifugal blower at high speed because of its small size.
[0010]
An air conditioner according to an embodiment of the second invention is an indoor unit of an air conditioner having at least a heat exchanger and a blower, in which a suction and exhaust device for performing suction and exhaust is disposed, and communicates with the suction and exhaust device. A suction duct, and an exhaust duct for exhausting air from the suction / exhaust device to the outside of the room. The suction / exhaust device includes, in order from the windward side, a first axial fan covered with a cylinder and having a built-in motor, It is characterized by comprising a trailing stationary blade, a second axial flow fan, and a second trailing stationary blade.
[0011]
With this configuration, an axial fan and a trailing vane for improving the static pressure and fan efficiency by collecting the swirl component of the wake are arranged, and a kit of the axial fan and the trailing vane is provided in two stages. By doing so, it is possible to exhibit twice the static pressure than per stage. A suction nozzle, a suction duct, a suction / exhaust device with a built-in two-stage axial fan kit, and an exhaust duct that has sufficient static pressure to exhaust the dirty air in the room to the outside through the air in order. It is. However, due to the structure of the indoor unit, the suction / exhaust device is required to rotate two axial fans at a high speed because of its small size, which can exert a sufficient static pressure. .
[0012]
An air conditioner according to an embodiment of the third invention is an indoor unit of an air conditioner having at least a heat exchanger and a blower, in which a suction / exhaust device for performing suction / exhaust is arranged and communicates with the suction / exhaust device. A suction duct, and an exhaust duct for exhausting air from the suction and exhaust device to the outside of the room. The suction and exhaust device is a one-stage axial fan with a built-in motor covered by a cylinder in order from the windward side, And a stationary blade.
[0013]
In addition, with this configuration, the number of parts is small because the kit of the axial fan and the rear stationary vane is one stage. However, because of one stage, it is necessary to rotate the built-in motor at a higher speed. Then, it has a high static pressure enough to discharge dust via the above-described path. Further, an air conditioner having a ventilation function at all times when the axial fan rotates at a low speed can be provided.
[0014]
An air conditioner according to an embodiment of the fourth invention is an indoor unit of an air conditioner having at least a heat exchanger and a blower, and is provided with a suction and exhaust device for performing suction and exhaust, and communicates with the suction and exhaust device. A suction duct, and an exhaust duct for exhausting air from the suction and exhaust device to the outside of the room. The suction and exhaust device includes, in order from the windward side, a first axial fan covered with a cylinder and having a built-in motor; And an inverting second axial fan having a built-in inverter.
[0015]
With this configuration, when two axially-inverting mirror fans that are double-inverted are operated, there is an axial fan that cancels out the swirling component of the first-stage axial fan and inverts the airflow. In other words, the static pressure can be more than doubled. When one of the axial fans rotates at a low speed, the air conditioner is also provided with a constant ventilation function, thereby providing an air conditioner.
[0016]
The method for controlling an air conditioner according to the fifth embodiment is characterized in that, in the air conditioner according to any one of the first to fourth embodiments, when ventilating a room, the centrifugal blower or the centrifugal blower of the suction and exhaust device is used. The axial fan is rotated at a low speed.
[0017]
With this configuration, when the blower is rotated at a low speed, the air passes through the suction duct, the suction / exhaust device, and the exhaust duct in this order, thereby exhausting the dirty air in the room to the outside, thereby providing a ventilation function. Can be. The air conditioner also enables constant ventilation.
[0018]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0019]
(Example 1)
FIG. 1 is a front external view of an indoor unit of an air conditioner of the present invention, FIG. 2 is a II sectional view of the air conditioner of the present invention, FIG. 3 is a II-II sectional view of FIG. FIG. 3 is a perspective view showing a structure related to an air filter-6. FIG. 5 is a front sectional view showing the internal structure of the suction and exhaust device, and FIG. It is AA sectional drawing which showed the internal structure of the suction exhaust apparatus. A heat exchanger 11 and a cross-flow fan 12 are provided inside an indoor unit 13 of the air conditioner. The air filter 6 of the indoor unit 13 sucks dust adhering to the air filter 6 and moves the suction nozzle 5 that moves to the left and right of the air filter 6 to the air filter. -6, and a suction / exhaust device 7 for sucking / evacuating dust is disposed on the side surface of the indoor unit 13, and the suction / exhaust device 7 is a centrifugal device fixed to a shaft 16a having a built-in motor 16. It is formed from a blower 14 and a casing 15 surrounding the centrifugal blower 14. The suction port 17 of the casing 15 is connected to the suction duct 3 communicating with the suction nozzle 5, and the blow port 17 of the casing 15 is connected to the exhaust duct 8 for discharging dust from the indoor unit to the outside. It has a function that can discharge. The air sucked from the suction port 17 forms a space 20 that is hermetically closed by a member 19 that covers the casing 15, and the air is sent into the centrifugal blower 14 from the space 20.
[0020]
Here, in the filter device 1, the air filter 6 is fixed by the filter frame 2.
[0021]
With this configuration, the centrifugal blower 14 sucks dust sufficiently deposited on the air filter 6 from the suction nozzle 5 and the suction duct 3, and collects dust and dust through the exhaust duct 8 because of the high pressure type in general. It has a static pressure enough to transport air. The air sucked from the suction port 17 forms a space 20 which is hermetically sealed by a member 19 covering the casing 15, and the air is sent into the centrifugal blower 14 from the space 20, whereby the suction / exhaust device 7 can be operated. The configuration can be made compact.
[0022]
(Example 2)
The suction and exhaust device 7 includes a centrifugal blower 14 having a built-in motor 24 and a casing 15 surrounding the centrifugal blower 14, and a suction duct 3 communicating a suction port 17 of the casing 15 with the suction nozzle 5. In addition, the outlet 18 of the casing 15 is communicated with the exhaust duct 8 for exhausting dust from the indoor unit 13 to the outside.
[0023]
With this configuration, when the centrifugal blower 14 is rotated at a low speed, the air passes through the suction nozzle 5, the suction duct 3, the suction / exhaust device 7 having the built-in centrifugal blower 14, and the exhaust duct 8 in this order, so that the indoor dirt is removed. The exhausted air can be exhausted to the outside to provide a ventilation function. That is, the air conditioner can always provide ventilation, and the input to the motor 16 of the suction and exhaust device 7 can be reduced.
[0024]
(Example 3)
FIG. 7 is a front sectional view of the suction / exhaust device 7.
[0025]
The suction and exhaust device 7 includes, in order from the windward side, an axial fan 21 having a built-in motor 24 covered by a cylinder 25, a trailing vane 23a, an axial fan 22, and a trailing vane 23b. The above-described two-stage axial fan kit is connected to the suction duct 3 and the exhaust duct 8, so that dust can be discharged and an air conditioner can be provided. The shaft 27 of the motor 24 is fixed to the axial fans 21 and 22. 26 is a hub.
[0026]
According to this configuration, the axial fan 21 and the trailing vane 23a for recovering the swirl component of the wake and improving the static pressure and the fan efficiency are arranged, and the axial fan 22 and the trailing vane 23b are further provided. By using two kits, the static pressure can be approximately twice as high as one kit. Suction nozzle 5, suction duct 3, suction and exhaust device 7 with built-in two-stage axial fan kit, and exhaust duct 8, through which air passes in this order, sufficient static pressure to exhaust dirty air in the room to the outside It was what I had. However, due to the structure of the indoor unit 13, the suction and exhaust device 7 needs to rotate the two axial fans 21 and 22 at high speed for small size. It can be demonstrated. Further, even if only one axial fan 22 is provided, the air conditioner can also be provided with a function of constant ventilation when rotating at a low speed.
[0027]
(Example 4)
The suction / exhaust device 7 includes, in order from the windward side, an axial fan 28 having a built-in motor 30 covered by a cylinder 32 and a trailing stationary blade 29. The suction duct 3 and the exhaust duct 8 Is connected to the one-stage axial fan 28. The shaft 31 of the motor 30 is fixed to the axial fan 28, and the hub is 28b.
[0028]
With this configuration, the kit of the axial flow fan 28 and the rear stationary blade 29 is one-stage, so that it is cost-effective and inexpensive. However, since it is a single stage, it is necessary to rotate the built-in motor 30 at a higher speed. By rotating the motor 30 at a higher speed even in a single stage, the motor 30 has a high static pressure enough to discharge dust through the above-described path. Further, it is possible to provide an air conditioner having a constant ventilation function when the axial fan 28 rotates at a low speed.
[0029]
(Example 5)
The suction / exhaust device 7 includes, in order from the windward side, an axial fan 33 covered with a cylinder 39 and containing a motor 35, and a reversing mirror-symmetric axial fan 34 containing a motor 36. The intake duct 3 and the exhaust duct 8 are connected to the above-described double-inverted axial fan kit. The hub is 33a, and the shafts 37 and 38 are fixed to the axial fans 33 and 34.
[0030]
When the two axially reversing mirror-symmetric axial fans 33 and 34 operate according to this configuration, there is an axial fan 34 that cancels out the revolving component of the first-stage axial fan 33 and inverts. In addition, it can exhibit a static pressure of about twice or more per air volume. In addition, when one of the axial fans 34 rotates at low speed, the air conditioner can be provided with a ventilation function at all times.
[0031]
In the above embodiments, the filter device moves left and right.However, even if the filter device moves up and down, if a suction duct is provided at the left end or the right end, it is possible to communicate with the suction and exhaust device, and The effect of is obtained.
[0032]
Further, in each of the above embodiments, the suction nozzle and the suction duct are directly communicated with each other, but instead of the suction nozzle, dust is removed from the filter, the dust is collected in the suction duct, and the dust is discharged outdoors by the suction and exhaust device. May be.
[0033]
【The invention's effect】
As is clear from the above embodiment, by arranging the suction / exhaust device on the side of the indoor unit, the suction / exhaust device with a built-in blower and the air are passed through the air in the order of the suction / exhaust duct, thereby removing the dirty air in the room. The air can be exhausted to the outside of the room, the comfort in the room is improved, and the filter in the indoor unit can be easily cleaned.
[Brief description of the drawings]
1 is a front view of an air conditioner indoor unit according to a first embodiment of the present invention; FIG. 2 is a cross-sectional view taken along a line II in FIG. 1; FIG. 3 is a cross-sectional view taken along a line II-II in FIG. FIG. 4 is a perspective view of a filter device of an air conditioner showing a first embodiment of the present invention. FIG. 5 is a cross-sectional view of an internal structure of a suction / exhaust device of an air conditioner showing a first embodiment of the present invention. FIG. 6 is a cross-sectional view taken along the line AA in FIG. 5. FIG. 7 is a cross-sectional view showing the internal structure of a suction / exhaust device of an air conditioner showing a third embodiment of the present invention. FIG. 9 is a cross-sectional view of an internal structure of a suction and exhaust device of an air conditioner showing an example. FIG. 9 is a cross-sectional view of an internal structure of a suction and exhaust device of an air conditioner showing a fifth embodiment of the present invention.
DESCRIPTION OF SYMBOLS 1 Filter device 2 Frame 3 Suction duct 5 Suction nozzle 6 Air filter
7 suction and exhaust device 8 exhaust duct 11 heat exchanger 12 cross-flow fan 13 air conditioner / indoor unit / main body 14 centrifugal blower 15 casing 17 suction port 18 outlet ports 21, 22, 28, 33 axial fan 34 Axial fans 23a, 23b, 29

Claims (5)

An indoor unit of an air conditioner having at least a heat exchanger and a blower, wherein a suction / exhaust device for suction / exhaust is disposed, a suction duct communicating with the suction / exhaust device, and exhaust gas exhausted from the suction / exhaust device to the outside of the room. An air conditioner having a duct, wherein the suction and exhaust device is formed by a centrifugal blower having a built-in motor and a casing surrounding the centrifugal blower. An indoor unit of an air conditioner having at least a heat exchanger and a blower, wherein a suction / exhaust device for suction / exhaust is disposed, a suction duct communicating with the suction / exhaust device, and exhaust gas exhausted from the suction / exhaust device to the outside of the room. A first axial fan, a first rear stationary vane, a second axial fan, and a second rear fan having a built-in motor covered with a cylinder in order from the windward side and having a duct. An air conditioner characterized by comprising a stationary vane. An indoor unit of an air conditioner having at least a heat exchanger and a blower, wherein a suction / exhaust device for suction / exhaust is disposed, a suction duct communicating with the suction / exhaust device, and exhaust gas exhausted from the suction / exhaust device to the outside of the room. An air conditioner having a duct, wherein the suction / exhaust device comprises, in order from the windward side, a single-stage axial fan with a built-in motor covered by a cylinder, and a rear stationary vane. . An indoor unit of an air conditioner having at least a heat exchanger and a blower, wherein a suction / exhaust device for suction / exhaust is disposed, a suction duct communicating with the suction / exhaust device, and exhaust gas exhausted from the suction / exhaust device to the outside of the room. The suction and exhaust device includes a first axial fan having a built-in motor covered by a cylinder and a second reversing axial fan having a built-in motor in order from the windward side. An air conditioner characterized by comprising. The air conditioner control method according to any one of claims 1 to 4, wherein when ventilating the room, the centrifugal blower or the axial fan of the suction and exhaust device is rotated at a low speed.

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