JPH0445735B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an air conditioner installed in a high place such as a ceiling, and more specifically relates to the structure of an air blowing part in such an air conditioner. .

(Prior art) In this type of air conditioner, air outlets are formed adjacent to each other on the front and lower surfaces of the casing, and the front air outlet and the lower air outlet are formed by tilting an air volume distribution member disposed inside the casing. Devices that control the amount of air blown out from the outlet are already well known.

(Problems to be Solved by the Invention) In the case of a structure like the above-mentioned conventional example, when the air volume distribution member is located at a predetermined air volume distribution position, the passage area leading to both air outlets is constant. Therefore, when the fan is operated with a large air volume, sufficient blowing air speed can be ensured and the indoor temperature distribution can be maintained in a good condition.However, in actual use of air conditioners, the operating noise In consideration of such factors, fans are often operated with a small air volume, and in this case, there is a risk that the indoor temperature distribution will deteriorate due to insufficient blowing air speed. Particularly, there has been a problem in that this tendency becomes remarkable during heating operation.

The present invention has been made in view of the above points, and
The purpose of this invention is to increase the speed of the air flow blown from each air outlet when the fan is operating at a small air volume at a predetermined air volume distribution position, thereby improving indoor temperature distribution. That is.

(Means for Solving the Problems) In the present invention, as means for solving the above problems, as shown in the drawings, the front air outlet 3 opens forward and the bottom air outlet 4 opens downward. In this air conditioner, a fan 5 and a heat exchanger 6 are disposed in a casing 1 in which a fan 5 and a heat exchanger 6 are disposed adjacent to each other. Air volume distribution vanes 11 positioned to distribute air volume to the air outlet 3 and the lower air outlet 4 at an arbitrary ratio
is provided so as to be swingable in the direction of reciprocating both the air outlet ports 3 and 4, and the air volume distribution blade 11
, two blade pieces 1 which are swingable in the direction of increasing or decreasing the passage area leading to both the air outlet ports 3 and 4.
1a, 11a, and the blade pieces 11a, 11
A driving means 21 that acts to swing the blade 1 and the blade 1 when the fan 5 is operated with a small air volume.
A control means 34 is provided for controlling the drive means 21 so as to swing 1a, 11a in a direction that reduces the passage area.

(Function) In the present invention, the following effects can be obtained by the above means.

That is, by positioning the air volume distribution vane 11 at an arbitrary position, the air flow W blown from the fan 5 can be adjusted.
is distributed to the front air outlet 3 and the lower air outlet 4 at an arbitrary ratio, and when the fan 5 is operating at a small air volume, the two blade pieces 11a, 11a constituting the air volume distribution blade 11 are By swinging in the direction of decreasing the area of the passageway leading to the outlet 3 and the lower air outlet 4, it is possible to increase the blowing air speed in any air volume distribution when the fan 5 is operating with a small air volume, thereby improving the indoor temperature distribution. This will allow us to achieve this goal.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

The air conditioner of this embodiment is as shown in FIG.
It consists of a fan 5 and a heat exchanger 6 arranged in a casing 1 which has an air inlet 2 at the rear of the lower surface and front and lower air outlets 3 and 4 at the front and lower front, respectively. It is a ceiling-mounted type that is used in a suspended state using a hanging holder 7 from a high place.

A blowing grille 8 is detachably provided in the air suction port 2, while the front and bottom air blowing ports 3 and 4 are adjacent to each other with the front lower end corner of the casing 1 as a boundary, and each Blowout grilles 9 and 10 are attached to the.

In the casing 1, at a position opposite to the front air outlet 3 and the lower air outlet 4, there is provided a unit for distributing the blown air flow W from the fan 5 to the front air outlet 3 and the lower air outlet 4 at an arbitrary ratio. A positioned air volume distribution vane 11 is provided so as to be swingable in the direction of reciprocating between the air outlets 3 and 4.

The air volume distribution blade 11 includes two blade pieces 11.
a, 11a to form an inwardly convex arc shape, and the front air outlet 3 and the lower air outlet 4 can be selectively brought into a fully closed state.

At both ends of adjacent parts of the blade pieces 11a, 11a, as shown in FIG.
Support shafts 12, 12, 12, 1 that are the center of swing of 1a
2 are provided protrudingly, and these support shafts 12, 1
2, 12, 12 are support holes 1 of the blade fittings 13, 13, which are located at both ends of the blade pieces 11a, 11a and are swingably supported with respect to the casing 1.
4, 14, 14, 14 so as to be rotatable.

Each of the blade attachments 13 includes an arm rod portion 13a having a rotation shaft 15 that is rotatably supported with respect to the casing 1, and a blade piece 11a connected to an end of the arm rod portion 13a. It consists of a blade holding part 13b that guards the side end portion of the blade 11a, and the support holes 14, 14 are formed in the blade holding part 13b. And the two blade attachments 13, 13
The rotation axis 1 is connected between the arm rod parts 13a, 13a.
Connecting rod 1 connected on the same axis as 5 and 15
6, and the two blade attachments 13, 13 are configured to oscillate synchronously about the rotating shafts 15, 15 as their oscillating centers.

Further, a pin 17 is provided protruding from the blade holding portion 13b on one side of the blade attachments 13, 13, and the pin 17 is connected to the swing motor 20 via links 18, 19. There is. Then, as the swing motor 20 is driven, the blade attachment 13 (in other words, the air volume distribution blade 11)
However, the two air outlets 3, 4 can be swung in a reciprocating direction with the rotation shafts 15, 15 as the center of oscillation.

Furthermore, between the upper surfaces of the blade pieces 11a, 11a of the air volume distribution blade 11, the blade pieces 11a,
A spring 21 made of a shape memory alloy that acts as a driving means for swinging the stopper 2
2 and 22. Terminals 24, 24 for connecting lead wires 23, 23 are connected to both ends of the spring 21.

The operation of the spring 21 is controlled by a driving means 34, which will be described later. As shown in FIG. 6, the control means 34 includes a transformer 35 connected to the terminals 24, 24 at both ends of the spring 21, and a transformer 35 connected to the primary side of the transformer 35 and for driving the fan 5. It consists of a low speed changeover switch 36 of the fan motor 5a and a switch 37 that operates in conjunction with it. Reference numerals 38 and 39 are medium speed and high speed changeover switches for the fan motor 5a, and 40 is a cold draft prevention switch that is opened at the start of heating operation and when the thermostat is turned off. The spring 21 is energized by the closing of the switch 37 (in other words, the start of low-speed operation of the fan motor 5a) and its temperature rises, and the spring 21 contracts due to the rise in temperature, causing the blade pieces 11a, 11a to
Swing upward (in the direction of arrow P in Fig. 5).
The upward swinging of the blade pieces 11a, 11a results in a reduction in the area of the passage leading to the front air outlet 3 and the lower air outlet 4. Furthermore,
Blade pieces 11a, 1 in the air volume distribution blade 11
A bias spring 25 for maintaining the posture of the blade pieces 11a, 11a is installed between the lower surfaces of the stopper 2a.
6 and 26.

In the drawing, reference numeral 27 denotes a blade stopper fixed to the blade fitting 13 with a screw 28 to prevent the support shaft 12 of the blade piece 11a from coming off, and 29 denotes a link 18,1.
9 is a screw for connecting, 30 is a bush, 3
1 and 32 are engagement holes for locking the stops 22 and 26 for stopping the spring 21 and the bias spring 25;
This is a screw to fix it to.

Next, the operation of the illustrated air conditioner will be explained.

In this air conditioner, the air flow W that is sucked in from the air suction port 2 and cooled or heated by the heat exchanger 6 to become cold or warm air is sent to the front air outlet 3 and the bottom air outlet 4. The air is blown out to cool or heat the room.

Distribution of the air volume to the front air outlet 3 and the lower air outlet 4 is performed by positioning the air volume distribution blade 11 after swinging around the rotating shafts 15, 15 driven by the swing motor 20. In this embodiment, there are the following four modes.

() 1st mode The air volume distribution vane 11 is positioned to fully close the lower air outlet 4 (see Fig. 1),
100% of the blown air flow W is blown out from the front air outlet 3.

() 2nd mode The air volume distribution vane 11 is located between the front air outlet 3 and the lower air outlet 4,
(see FIG. 2), and the blown air flow W is distributed at a ratio of 70% to the front air outlet 3 and 30% to the lower air outlet 4.

() 3rd mode The air volume distribution vane 11 is located between the front air outlet 3 and the lower air outlet 4,
(see FIG. 3), and the blown air flow W is distributed at a ratio of 30% to the front air outlet 3 and 70% to the lower air outlet 4.

()Fourth mode The air volume distribution vane 11 is positioned to fully close the front air outlet 4 (see Fig. 4).
100% of the blown air flow W is blown out from the lower air outlet 3.

In this embodiment, the first mode is the basic operating mode during the cooling operation, and the second mode is the basic operating mode during the heating operation. Operating modes other than the basic mode can be changed using the remote control. However, only during cooling operation, and for operations other than the basic mode, a one-hour timer operation is used (to prevent condensation on the lower outlet).

Furthermore, in the air conditioner of this embodiment, when operating in each of the modes () to () above, when the fan 5 is operated with a small air volume,
The control means 34 controls the air volume distribution vanes 11 as follows.
Swing control is performed.

That is, when the fan 5 is switched to small air volume operation (in other words, when the low speed changeover switch 36 of the fan motor 5a is closed), the switch 37 is closed and the shape memory alloy A current is supplied to the spring 21 of the spring 2
1 is made to contract when the temperature rises, and as a result of the contraction of the spring 21, the blade pieces 11a, 11 constituting the air volume distribution blade 11
a is swung upward (in the direction of arrow P in FIG. 5) about the support shafts 12, 12, 12, 12 (see the dashed lines in FIGS. 1 to 4).
The upward swinging of the blade pieces 11a, 11a as described above causes a decrease in the area of the passage leading to the front air outlet 3 and the lower air outlet 4, and this decrease in the area of the passage leads to a decrease in the area of the passage leading to the front air outlet 3 and the lower air outlet 4. This will encourage the speed of the airflow blown out from 3 and 4 to increase, greatly contributing to improving the indoor temperature distribution. When the fan 5 is switched to high air volume or medium air volume operation (in other words, the low speed changeover switch 36 of the fan motor 5a is opened,
When the medium speed or high speed selector switches 38 and 39 are closed), the switch 37 is opened to stop energizing the spring 21, and the bias spring 25 returns to its original state (Figs. 1 to 4). (shown with solid lines). In the case shown in FIGS. 1 and 4 (in other words, when the lower air outlet 4 and the front air outlet 3 are in the fully closed state), the upper edge 3a of the front air outlet 3 or the lower air outlet Since the blade piece 11a that is in contact with the rear end edge 4a of the outlet 4 is rendered inoperable by the contact force, only one blade piece 11a is allowed to swing upward. Also, when starting up during heating operation and when the thermostat is turned off.
Sometimes, the operation is forced to start in the first mode, but at this time, the cold draft prevention switch 4
0 is opened, even when the fan 5 is operating at a small air volume (in other words, when the low speed changeover switch 36 of the fan motor 5a is closed), the spring 21
The power supply to the lower air outlet 4 is forcibly stopped, thereby blocking the air blowing out from the lower air outlet 4 and preventing cold drafts. .

As described above, according to this embodiment, the distribution of the blown air flow W to the front air outlet 3 and the lower air outlet 4, and the increase in the wind speed at any distribution position when the fan 5 is operating at a small air volume, are achieved. This can be done by the air volume distribution vane 11, which is the same member, and an extremely effective measure for improving the indoor temperature distribution can be obtained.

In the above embodiment, the case where the air volume distribution vane 11 is positioned in four modes has been described.
The air volume distribution vane 11 can be positioned at any position between the front air outlet 3 and the lower air outlet 4.

It goes without saying that the present invention is not limited to the configuration of the above-described embodiments, and that the design can be changed as appropriate without departing from the gist of the invention.

(Effects of the Invention) As described above, according to the present invention, the front air outlet 3 that opens forward and the lower air outlet 4 that opens downward are provided in the casing 1 adjacent to each other. , fan 5 and heat exchanger 6
In the air conditioner, an air volume distribution device is positioned in the casing 1 to distribute the air flow W blown from the fan 5 to the front air outlet 3 and the lower air outlet 4 at an arbitrary ratio. Feather 1
1 is provided so as to be swingable in the direction of reciprocating both the air outlet ports 3 and 4, and the air volume distribution blade 1
1 is composed of two blade pieces 11a, 11a which are swingable in directions to increase or decrease the area of the passage leading to the air outlet ports 3, 4, and the blade pieces 11a, 1
a driving means 21 that acts to swing 1a;
A control means 34 for controlling the drive means 21 to swing the blade pieces 11a, 11a in a direction to reduce the passage area when the fan 5 is operated with a small air volume is attached, so that the air volume distribution blade 1
By positioning the fan 1 at an arbitrary position, the airflow W from the fan 5 can be distributed to the front air outlet 3 and the lower air outlet 4 at an arbitrary ratio, and when the fan 5 is operated with a small air volume, Two blade pieces 11a constituting the air volume distribution blade 11,
By swinging the air blower 11a, the area of the passage leading to the air outlets 3 and 4 can be reduced and the speed of the blowing air can be increased, which has the excellent effect of greatly contributing to improving the indoor temperature distribution.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view showing the first mode state of the air conditioner according to the embodiment of the present invention, and FIGS. 2 to 4 are the second to fourth modes of the air conditioner shown in FIG.
FIG. 5 is an exploded perspective view showing the structure of the air volume distribution vane in the air conditioner shown in FIG. 1, and FIG. 6 is a partial sectional view showing the mode state. FIG. FIG. 1... Casing, 3... Front air outlet, 4... Bottom air outlet, 5... Fan, 6... Heat exchanger, 11
...Air volume distribution vane, 11a...Blade piece, 21...Driving means (spring), 34...Control means, W...Blowout air flow.

Claims (1)

[Claims] 1. A fan 5 and a heat exchanger 6 are arranged in a casing 1 in which a front air outlet 3 that opens forward and a bottom air outlet 4 that opens downward are adjacent to each other. In the harmonizer, the fan 5 is disposed in the casing 1.
The air volume distribution vane 11, which is positioned to distribute the air flow W blown from the air outlet to the front air outlet 3 and the lower air outlet 4 at an arbitrary ratio, is swung in a direction that reciprocates between the two air outlets 3 and 4. The air volume distributing blade 11 is composed of two blade pieces 11a, 11a that are swingable in directions to increase or decrease the passage area leading to the air outlet ports 3, 4, and A drive means 21 that acts to swing the blades 11a, 11a, and a drive means 21 that swings the blade pieces 11a, 11a in a direction that reduces the passage area when the fan 5 is operated with a small air volume. An air conditioner characterized in that a control means 34 is attached.