JPH04131627A - Air conditioner - Google Patents

Abstract

PURPOSE:To reduce the power consumption of a fan motor and reduce noise by a method wherein a plurality of louvers are movably arranged at a suction port of a casing in such a way that an opening area of the suction port is varied and an adjusting means cooperatively related to the louvers to move the louvers and adjusting an opening area of the suction port is provided. CONSTITUTION:As refrigerant is circulated in a heat exchanger 3 and a blower fan 4 is driven, indoor air is made to flow into an air passage 24 in a casing 2 through each of suction ports 21 and 22, heat exchanged at the heat exchanger 3 to become cold air or hot air. After this operation, the conditioned air is sent into a room through a blowing port 23 to cool or heat the indoor area. During this air conditioning operation, the blower fan 4 is driven at a specified number of revolution. In the event that an air volume is to be controlled, an angle of each of the louvers 5, 5... is adjusted by the adjusting means 6 and an opening area of the front suction port 21 is varied. Accordingly, it is possible to vary the air volume while an input of the blower fan 4 being kept constant and further it is possible to keep the consumption power of the blower fan 4 at a low value. In turn, in the event that the air volume is to be increased, the opening area of the front suction port 21 is increased and an aeration resistance is kept low to enable the air volume to be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an air conditioner installed indoors or the like, and particularly relates to air volume control measures.

(Prior Art) Generally, a wall-mounted air conditioner installed indoors, such as a room air conditioner, has a heat exchanger and a blower fan housed in a casing, and has an inlet on the front or top surface of the casing. Air outlets are provided at the lower part of the front surface, and indoor air is sucked in through the suction ports, and is blown into the room as cold air or warm air through the heat exchanger through the air outlets.

In the above-mentioned air conditioner, a plurality of fan flags are provided to control the air volume, and the motor rotation speed of the blower fan is changed according to each fan flag, as disclosed in Japanese Patent Laid-Open No. 59-109734. There is something I am doing.

(Problems to be Solved by the Invention) In the above-mentioned air conditioner, the wind ffi is adjusted by controlling the rotational speed of the motor of the blower fan, and there is a problem in that the power consumption is large. In other words, since the input power to the motor is controlled, in order to obtain a large air volume, the input power must be increased, resulting in an increase in power consumption.

Furthermore, since the motor rotational speed is controlled, there is a problem in that when the air volume increases, the noise increases due to ventilation resistance.

The present invention has been made in view of the above, and aims to reduce power consumption by the fan motor to save energy and reduce noise.

(Means for Solving the Problems) In order to achieve the above object, the means taken by the present invention are as follows:
The air volume is controlled by changing the opening area of the suction port.

Specifically, as shown in FIGS. 1 to 3, claim (1)
First, the measures taken by the invention related to the above are as follows:
) and an air outlet (23), a heat exchanger (3) and a blower fan (4) are housed in a casing (2), which serves as an air conditioner.

A plurality of louvers (5) (5), etc. are movably provided at the suction port (21) of the casing (2) so that the opening area of the suction port (21) changes. . Further, an adjusting means (6) is connected to the louvers (5), (5), and moves the louvers (5), (5), and adjusts the opening area of the suction port (21). ).

Moreover, the means taken by the invention according to claim (2) is each louver (5) in the invention according to claim (1).

(5), . . . are formed of flat plate-like members, and the suction ports (
The suction port (21) is fully opened in the orthogonal position. The structure is such that the suction port (21) is in a fully closed state in the parallel position.

Moreover, the means taken by the invention according to claim (3) is the invention according to claim (1), in which a plurality of fixed louvers (
5a) (5a),... and multiple movable louvers (
5b), (5b), . . . , each of the fixed louvers (5a), (5a), . (5b),
(5b), ... are fixed louvers (5a).

(5a) is located on a plane adjacent to the mounting plane of . , each of the above louvers (5a).

(5b), -... indicates that the suction port (21) is fully open when the louvers (5a) and (5b) overlap, and the suction port (21) is fully open when the movable louver (5b) is in the gap position relative to the fixed louver (5a). ) is configured to be in a fully closed state.

(Function) With the above configuration, in the invention according to claim (1), when the blower fan (4) is driven, indoor air is transferred to the suction port (21).
After being sucked into the casing (2) and exchanging heat with the heat exchanger (3), it is discharged into the room through the outlet (23).

A louver (5) provided at the suction port 521)
, (5), . ) between a parallel position and a vertical position to change the opening area of the suction port (21).This change in opening area changes the ventilation resistance and adjusts the air volume by the ventilation fan (4).

Further, in the invention according to claim (3), the movable louver (5b
), (5b), ... are fixed louvers (5a).

(5a) It moves linearly between the superimposed position and the gap position with respect to . . . and changes the opening area of the suction port (21) to adjust the air volume.

(Effect of the invention) Therefore, according to the invention according to claim (1), the suction port (2
Since the air volume is adjusted by changing the opening area of 1), the air volume can be changed while the input to the fan (4) remains constant, so the power consumption of the fan can be kept low. By being able to do this, it is possible to save energy.

In addition, when increasing the air volume, it can be achieved by increasing the opening area of the suction port (21) and reducing the ventilation resistance, so it is possible to reduce noise.
In particular, since the rotational speed of the blower fan (4) can also be reduced, it is possible to further reduce noise.

Further, according to the inventions according to claims (2) and (3), when the suction port (21) is fully closed, each louver (5).

(5a) and (5b) allow the suction port (21) to be in a nearly flat state, ensuring that foreign matter such as lumps does not accumulate or enter the main body when the device is not in use. Since it is possible to prevent this, maintenance and inspection can be easily performed, and the design quality can be improved.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

As shown in Figures 1 and 2, (1) is a wall-mounted air conditioner that is attached to the wall of a room, and a heat exchanger (3) and a blower fan (4) are installed in a casing (2). It is housed and configured.

The casing (2) is formed into a slightly horizontally elongated rectangular body, and has a front suction port (21) on the front surface, a top suction port (22) on the top surface, and an air outlet (23) on the lower front surface. At the same time, there are both suction ports (
An air passageway (24) is formed from 21) and (22) to the outlet (23). And each of the above suction ports (
21).

(22) is provided with filters (25) and (26), while the air outlet (23) is provided with a wind direction plate (27).

In addition, the heat exchanger (3) has both suction ports (21) (22).
It is installed on the upstream side of the air passage (24) so as to face the air passage, and generates hot or cold air by exchanging heat with the indoor air, and a drain pan (31) is installed at the bottom of the heat exchanger. It is provided. On the other hand, the blower fan (4) is arranged downstream of the heat exchanger (3) in the air passageway (24), and sucks indoor air into the air passageway (24) by driving the blower fan (4). , cool air etc. are blown into the room from the air passage (24). A motor (not shown) is connected to the blower fan (4), and the motor is controlled to rotate at a constant rotation speed.

Further, the front suction port (21) is provided with an air volume control mechanism (11), which is a feature of the present invention, and the air volume control mechanism (11) is as shown in FIGS. 3 to 6. , multiple louvers (5), (5).

... and an air volume adjusting means (6), and is configured to control the air volume of the blower fan (4) by changing the opening area of the front suction port (21).

The louvers (5), (5), ... are formed from elongated flat plate members, and longitudinal bins (
51) and (51) are formed protrudingly. And each pin (51), (51) is attached to the casing (2).
The louvers (5), (5),
... is attached in the width direction of the front suction port (21) and is provided so as to be freely rotatable in the vertical direction.
The louver width is set so that the front suction port (21) is fully opened in a flat state when located parallel to, that is, perpendicular to, the front suction port (21).

The adjusting means (6) adjusts the opening area of the front suction port (21) by rotating each louver (5), (5), etc., and the pin (51) of one louver (5) motor (61
) are directly connected, while each louver (5), (5),...
bins (51), (51).

Gears (62), (62), ... are attached to the gears (62), (62), ..., and a chain (63) is wound around each gear (62), (62), .... and,
A controller (7) is connected to the motor (61), and drives the motor (61) in forward and reverse directions so that each louver (5), (5), etc. is connected to the front suction port (21). (see FIGS. 3 and 4) and each louver (5).

(5), ... are parallel to the front suction port (21) (see Figures 5 and 6), and each louver (5)
, (5),... are rotated. Further, each of the louvers (5), (5), ... is configured so that the front suction port (21) is fully open when in the orthogonal position, and the front suction port (21) is fully open when in the parallel position. There is.

Next, the air conditioning operation of this air conditioner (1) will be explained.

First, the refrigerant is circulated through the heat exchanger (3) and the blower fan (
4), the indoor air flows through each suction port (21) and (2).
2) flows into the air passageway (24) in the casing (2) and undergoes heat exchange in the heat exchanger (3) to become cold air or hot air.

Thereafter, this conditioned air is blown into the room from the outlet (23) to cool and heat the room.

During this air conditioning operation, the blower fan (4) is driven at a constant rotation speed, and when controlling the air volume, each louver (5
), (5), . . . are adjusted by the adjusting means (6), and the opening area of the front suction port (21) is changed.

In other words, as shown in Fig. 7, when the rotation speed of the blower fan (4) is specified (see the solid line), the relationship between the air volume Q and the static pressure △p is determined. ,(
5) When the static pressure △p is changed depending on the angle of...
Wind ff1Q will change. For example, louver (5
) is set to the orthogonal position and the first opening A1 is fully opened, the strong wind ff1Q)I is set, and when the second opening A2 is set to 2/3, the weak air flow QM is set to the 4/9 opening. If you set the opening to 83, you will get a light breeze mQL. Therefore, conventionally, as shown in FIG. 8, the number of revolutions of the blower fan (4) is changed to a first number of revolutions H, a second number of revolutions M, and a third number of revolutions to change the wind ff1Q to a strong air volume QH.
In contrast, the wind and GLQ are changed only by the third rotation speed, compared to the previous example where the wind quantity QM and the breeze mQL were changed.

Therefore, to explain the specific control by the controller (7), during heating, as shown in Fig. 9,
When the indoor air temperature C1, for example, the intake air temperature, increases with respect to the set temperature B1, the louver (5) is controlled to the second opening degree A2 until -0.5 degrees Celsius, and the air volume is increased. When the temperature rises to within -0.5°C with respect to the set temperature B1, the louver (5) is controlled to the third opening degree A3 and the air volume is reduced. Also, if the indoor air temperature C1 is decreasing, the set temperature B
-1 to the third opening degree A3 until the temperature reaches -1.0℃ relative to 1.
, when the temperature drops below 0°C, the opening degree is controlled to the second opening degree A2.

On the other hand, during cooling, as shown in FIG. 10, the indoor air temperature C2 decreases by +0.5 with respect to the set temperature B2.
It is controlled to the second opening degree A2 until the temperature reaches 100.5°C, and the third opening degree A3 is controlled when it cools down to within 10.5°C, and the third opening degree is controlled until the indoor air temperature C2 rises to +1.0°C. +1 to 83 degrees
．． When the temperature reaches 0° C. or higher, the third opening degree is controlled to A2.

Therefore, since the opening area of the front suction port (21) is changed to adjust the air volume, the blower fan (4)
Since the air volume can be changed while keeping the input constant, the power consumption of the blower fan (4) can be kept low, resulting in energy savings.

In addition, when increasing the air volume, it can be achieved by increasing the opening area of the front suction port (21) and reducing the ventilation resistance, so it is possible to reduce noise. Since the rotation speed (4) can also be reduced, it is possible to further reduce noise.

Also, when the front suction port (21) is fully opened, each louver (5), (5), . . .
21) can be made almost flat, so
When the air conditioner (1) is not in use, it is possible to reliably prevent the accumulation of foreign matter such as lumps and the intrusion of foreign matter into the main unit, making maintenance and inspection easy, while also improving the design. It is possible to improve the

FIGS. 11 to 14 show other air volume control mechanisms (11a),
(llb), and the air volume control mechanism (11a) shown in FIGS. 11 and 12 consists of a plurality of fixed louvers (
5a), (5b)... and multiple movable louvers (5
b), (5b), . . . and adjusting means (6a) on the movable louvers (5b), (5b), .
are connected and configured. the fixed louver (5a),
(5a), . . . are made of horizontally long flat plate members parallel to the front suction port (21), and are arranged side by side on the same plane with a predetermined gap in the vertical direction. On the other hand, the movable louver (5b).

(5b), -... are fixed louvers (5a), (5a).
It consists of a horizontally long flat member parallel to the front suction port (21), and each movable louver (5b) (5b),
. . . For example, vertical support members (5
2), and are arranged side by side on the same plane with a predetermined gap in the vertical direction. The movable louvers (5b), (5b), . . .
2) is inserted into the guide (53) and the fixed louver (5a)
, (5a), .

Further, the adjusting means (6a) includes a link (65) connected to a rotating body (64) connected to a motor (61), and the link (65) is connected to the supporting member (52). There is. Then, the movable louver (5b) is moved by forward and reverse rotation of the motor (61).

(5b), , are fixed louvers (5a), (5a)
.

The superimposition position superimposed on ... and the fixed louver (5a).

(5a), . ) in the fully open state (see Fig. 12). Note that (54) is a wind direction plate.

Therefore, the movable louvers (5b), (5b).

... is moved up and down to change the opening area of the front suction port (21) and adjust the air volume by the blower fan (4).

Other configurations, functions, and effects are the same as in the previous embodiment.

In addition, the air volume control mechanism (ll
b) consists of a plurality of louvers (5c), (5c)... connected to an adjusting means (6b), each of which has a plurality of louvers (5c),
(5c), .
connected by. On the other hand, the adjustment means (6b)
The gear (66) is directly connected to one louver (5C),
A chain (67) is wound around the gear (66) or the motor (61).

Therefore, by forward and reverse rotation of the motor (61), the louver (
5c), (5c),... rotate, and the front suction port (21
) is changing the opening area. Then, each louver (5
c), (5c), ... are in the fully closed state (see Figure 13) in a position parallel to the front suction port (21),
21) and is fully opened in the vertical position (see Fig. 14).

Other structures, functions and effects are the same as those of the previous embodiment.

In each embodiment, the opening area of the front suction port (21) is changed, but the opening area of the top suction port (22) may be changed. ) may be divided into two or more parts, and the opening area of each front suction port (21) may be changed separately.

Furthermore, the present invention is not limited to wall-mounted air conditioning apparatuses, but can of course be applied to ceiling-mounted, floor-mounted, and other air conditioning button apparatuses.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of an air conditioner, and FIG. 2 is a cross-sectional view thereof. Figures 3 to 6 show the air volume control mechanism, Figure 3 is a front view when fully open, Figure 4 is a side view of the same, Figure 5 is a front view when fully closed, and Figure 6 is a side view of the same. It is. FIGS. 7 and 8 are characteristic diagrams of air volume with respect to static pressure with respect to the number of rotations of the ventilation fan, and FIGS. 9 and 10 are diagrams showing the louver opening range with respect to indoor temperature changes. Figures 11 to 14 show other air volume control mechanisms;
The figure is a side view when fully closed, Figure 12 is a side view when fully open,
FIG. 3 is a side view of another air volume control mechanism when it is fully closed, and FIG. 14 is a side view when it is fully opened. (1)...Air conditioner (2)...Casing (3)...Heat exchanger (4)...Blower fan (5), (5a), (5b), (5c)... Lou/< Patent fee (6a), (6b) ...Controller...Front suction port...Blowout port

Claims (3)

[Claims] (1) In an air conditioner in which a heat exchanger (3) and a blower fan (4) are housed in a casing (2) in which an air inlet (21) and an air outlet (23) are provided, A plurality of louvers (5), (5), etc. are movably provided at the suction port (21) of the casing (2) so that the opening area of the port (21) changes; ), (5), ..., and the louver (
5), (5), . . . to adjust the opening area of the suction port (21). (2) In the air conditioner according to claim (1), each louver (5), (5), . The suction port (21) is rotatably supported between an orthogonal position and a parallel position in a direction parallel to the suction port (21).
An air conditioner characterized in that the air conditioner is formed so that the suction port (21) is in the fully closed state in a parallel position to the fully open state in 1). (3) In the air conditioner according to claim (1), a plurality of fixed louvers (5a), (5a), . . . and a plurality of movable louvers (5b), (5b), . The fixed louvers (5a), (5a), . . . are arranged in parallel on the same plane with a predetermined interval, while the movable louvers (5b), (5b), . Fixed louver (5a),
(5a) is located on a plane adjacent to the mounting plane of . , Each of the above louvers (5a), (5b),... are both louvers (
When the suction port (21) is fully open in the superimposed position of 5a) and (5b), the movable louver (
5b) An air conditioner characterized in that the air inlet (21) is formed so as to be in a fully closed state at the gap position.