JPH0424350Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a damper drive device for opening and closing an air conditioner having two or more air outlets.

[Conventional technology]

Some indoor units of separate air conditioners are equipped with air outlets at the top and bottom of the indoor unit in order to improve the distribution and mixing of indoor air.

FIG. 6 shows an indoor unit of a separate air conditioner disclosed in, for example, Japanese Utility Model Application No. 61-46312.

In the figure, reference numeral 1 denotes an indoor unit, which is provided with an upper air outlet 3 at the upper part of the front side (left side in the figure), a suction grille 2 at the center, and a lower air outlet 4 at the lower part. A heat exchanger 5 is provided behind the suction grill 2. A first line flow fan 6 driven by a first electric motor 15 is provided at the upper back of the heat exchanger 5, and a second line flow fan 6 driven by a second electric motor 16 is provided at the lower back of the heat exchanger 5. A fan 7 is provided. At the back of the first line flow fan 6 there is an upper fan casing 8, and at the front there is a stabilizer 10. The air sent out by the first line flow fan 6 passes through the upper air passage 11 formed by the upper blow-off nozzle 18 and is blown out from the upper blow-off port 3 . There is a lower fan casing 9 on the back of the second line flow fan 7,
There is a drain pan 12 at the front. The air sent out by the second line flow fan 7 is passed through a lower air passage 13 formed by the outer surface of the drain pan 12, a lower fan casing 9, and a lower blowout nozzle 19 formed to be continuous with the lower fan casing 9. and is blown out from the lower outlet 4.
An air passage 13 is provided at an appropriate position within the lower air passage 13.
A damper 14 is provided for opening and closing. 17
1 is a damper electric motor, and has a link mechanism ( ) configured to interlock with the damper 14.

Next, the operation will be explained. Both upper and lower air outlets 3,
4, line flow fans 6, 7
When the indoor unit 1 rotates, air near the indoor unit 1 is sucked in through the suction grill 2, passes through the heat exchanger 5, is cooled or heated, and is then transferred to the line flow fan 6,
7, passes through air passages 11 and 13, and is blown out from air outlets 3 and 4.

When trying to obtain conditioned air only from the upper air outlet 3 by rotating only the first line flow fan 6, simply stopping the second line flow fan 7 will cause air to be sucked in from the lower air passage 13 as well. It ends up. Since this air does not pass through the heat exchanger 5, it is not air conditioned, which is a problem. Therefore, the lower air passage 13 is closed by the damper 14 so that the air is sucked in only from the suction grille 2, and the air is passed through the heat exchanger 5 to be heated or cooled.

[Problem that the invention attempts to solve]

Since the damper drive device of a conventional air conditioner is configured as described above, due to the loose fit of the connection part of the link mechanism, a gap is created between the damper and the air passage when the damper is closed or opened, causing air leakage. ,
There was a problem with dew condensation inside the air ventilation duct. Furthermore, the damper motor protrudes into the piping space due to the link mechanism, which compresses the piping space and reduces the workability of connecting the piping during installation.

This idea was made to solve the above-mentioned problems, and provides a damper drive device that can reliably seal the damper and the air passage when the damper is closed or opened, and can also expand the space for piping. It is intended for this purpose.

[Means for solving problems]

The damper drive device according to this invention eliminates the link mechanism and uses a synchronous motor as the damper motor, and when the damper is closed or opened, the air ventilation passage and the damper are brought into close contact with the damper by the pressing force of the spring, and there is no installation space. The aim is to expand the

[Effect]

The damper drive device of this invention uses a synchronous motor to open and close the damper, and when the damper is opened or closed, the air ventilation passage is sealed by the pressing force of the spring, so that air can be reliably removed regardless of the stop position of the synchronous motor. Air passages can be sealed.

[Example of idea]

An embodiment of this invention will be described below with reference to the drawings.

In Figs. 1 to 4, reference numeral 1 denotes an indoor unit of an air conditioner installed on a floor or the like in a room.

The indoor unit 1 is provided with an upper air outlet 3 at the upper front, a suction grille 2 at the center, and a lower air outlet 4 at the lower part. A heat exchanger 5 is provided behind the suction grill 2. A first line flow fan 6 is provided at the back upper part of the heat exchanger 5, and includes an upper fan casing 8, a stabilizer 10 provided at the upper part of the heat exchanger 5, and an upper blowing nozzle 18 connected to the upper fan casing 8. An upper air passage 11 is formed by the upper air passage 11, and the conditioned air sent out by the first line flow fan 6 passes through the upper air passage 11 and is blown into the room from the upper outlet 3. A second line flow fan 7 is provided at the lower back of the heat exchanger 5, and the conditioned air sent out by the second line flow fan 7 is sent to a lower fan casing 9 and a lower blowing nozzle 19 connected thereto. and the outer surface of the drain pan 12 that receives the drain generated in the heat exchanger 5.
It is blown out into the room. Reference numerals 15 and 16 are electric motors that drive the first line flow fan 6 and the second line flow fan 7, respectively, and are each fixed to the main body pace by fixtures 20. Also, on the right side of the diagram of the indoor unit 1, there is an electrical box 21.
is provided and equipped with electrical components 23. A remote control storage section 22 is provided above the electrical equipment box 21, in which a remote control 24 is placed.

A damper 14 is provided at the lower outlet 4, and the damper 14 moves from the open position (the position shown by the solid line in FIG. 1 and the chain line in FIGS. 4 and 5) to the closed position (the position shown by the solid line in FIG. 1 and the chain line in FIGS. 4 and 5) around the center of motion 29. Dashed line in Figure 1, No. 4
It is possible to rotate up to the position shown by the solid line in FIG. As shown in Figure 3, damper motor 1
A cam 33 is attached to 7 and is connected and driven by a connecting tool 41. A spring 34 is pivotally supported by the connector and is mounted so as to press the damper 14 so as to restrict the damper 14 from being in an open state or a closed state.

Next, the effect will be explained. In FIGS. 1, 3, and 4, if the damper 14 is used with air flowing from both the upper outlet 3 and the lower outlet 4,
4), the damper motor 17 is controlled to rotate to this open position, and is pressed by a spring 34 to seal the damper.

The damper 14 is now in a position forming part of the lower air passage 13. At that time damper 14
One end of the nozzle hits the back surface of the front end of the lower blow-off nozzle 19 and stops.

If air is to be blown out only from the upper outlet 3, the lower outlet 4 must be closed to prevent air from being sucked in from the lower outlet. Therefore, before stopping the second line flow fan 7, the damper electric motor 17 is rotated to rotate the damper 14 from the open position in the opposite direction to the above-mentioned direction, and the damper 14 is moved to the closed position (the chain line in FIG. 1). , the position shown by the solid line in FIGS. 4 and 5). At this time as well, pressure is applied by the spring 34 as in the open state.

In the above embodiment, the damper 14 is rotated by the damper electric motor 17, and the spring 14 is pressurized when the damper 14 is in the open or closed state, but as shown in FIG. By providing a gear part a42 at the top and engaging the gear part b44 of the stalling device 43, the change in force at the upper end point of the spring 34 is not directly transmitted to the damper 14, and the movement of the damper 14 is prevented. It can be made smooth.

[Effect of idea]

As described above, according to this invention, the damper is rotated by the damper electric motor, and the damper is pressed into the closed or open state by the spring, so airtightness is very high. This has the effect of eliminating the cause of dew condensation in the air path due to the deterioration of the sealing performance of the damper due to variations in the stopping position. Further, by providing a stalling device, the damper can be rotated more smoothly.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing an embodiment of this invention.
Fig. 2 is a front sectional view of Fig. 1, Fig. 3 is an exploded perspective view of the main part of Fig. 1, Fig. 4 is an enlarged sectional view of the vicinity of the lower air outlet of an embodiment of this invention, and Fig. 5 is FIG. 6 is an enlarged sectional view of the vicinity of the lower air outlet showing another embodiment of this invention, and FIG. 6 is a side sectional view of the conventional example. In addition, 14 is a damper, 17 is a damper electric motor, 33 is a cam, 34 is a spring, 41 is a coupling device, 4
2 is a gear portion a, 43 is a stalling device, and 44 is a gear portion b.

Claims (1)

[Claims for Utility Model Registration] (1) In an air conditioner having multiple outlets including an outlet equipped with a damper, a damper driven by a damper electric motor, regulating the closed or open state of this damper A damper drive device for an air conditioner, characterized by being provided with a pressure spring. (2) The damper drive device for an air conditioner according to claim 1, wherein the damper is connected to an electric motor via a cam and a connector. (3) The damper drive device for an air conditioner according to claim 1, wherein the coupling device is provided with a gear portion and is equipped with a stall device that meshes with the gear.