JP2007147155A - Indoor unit of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent generation of dew condensation on a motor and mechanism elements caused by leakage of conditioning air to a driving unit of a wind direction changing means from a ventilation flue. <P>SOLUTION: The driving unit 6 of a horizontal wind direction plate 5 as the wind direction changing means is mounted at the external of an air trunk 7. The driving unit 6 has the motor 11, a link mechanism 12, a case 13 and a rotation output shaft 14. The link mechanism 12 transmits the output of the motor 11. The case 13 covers the motor 11 and the link mechanism 12. The rotation output shaft 14 outputs the output of the motor 11 transmitted through the link mechanism 12 to the external of the case 13. An air trunk component part 2a of a bottom part case 2 has a first through hole 15. The rotation output shaft 14 is inserted into the air trunk 7 through the first through hole 15. A blocking structure having a first fitting portion 21 is formed around the first through hole 15. The blocking structure blocks the communication between the internal of the driving unit 6 and the air trunk 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an indoor unit of an air conditioner including a motor that drives a horizontal wind direction plate.

2. Description of the Related Art Conventionally, there is an air conditioner indoor unit that includes a motor that drives a horizontal wind direction plate, such as an air conditioner indoor unit described in Patent Document 1. In this indoor unit, a through hole is formed in the side wall that forms the ventilation path. Through the through-hole, the connecting rod of the horizontal wind direction plate is connected to mechanical parts such as a motor and a link arranged inside the indoor unit main body and outside the ventilation path.
JP 2005-140460 A

  However, in the indoor unit described in Patent Document 1, conditioned air generated by cooling the air by the indoor heat exchanger leaks out from the ventilation path through the through hole, and there is a possibility that condensation occurs in the motor and the mechanical parts. is there. The indoor unit described in Patent Document 1 includes a lid for blocking the motor and mechanical components from outside air, but it is difficult to completely block heat conduction between the inside and outside of the indoor unit body. It is difficult to suppress the occurrence of condensation in mechanical parts.

  The subject of this invention is providing the indoor unit of the air conditioner which can prevent generation | occurrence | production of the dew condensation of a motor and a mechanism component by the leakage of the conditioned air from the ventilation path to the drive unit of a wind direction change means.

The indoor unit of the air conditioner according to the first aspect of the present invention includes a wind path component, a wind direction changing means, and a drive unit. An air path component is a member which comprises an air path. The wind direction changing means is installed inside the air passage. The wind direction changing means changes the wind direction of the conditioned air blown into the room. The drive unit is installed outside the air passage. The drive unit drives the wind direction changing means. The drive unit includes a motor, a mechanical component, a case, and a rotation output shaft. The mechanical component transmits the output of the motor. The case covers the motor and the mechanical parts. The rotation output shaft outputs the output of the motor transmitted through the mechanical component to the outside of the case. A first through hole is formed in the air passage component member. The first through hole allows the rotation output shaft to pass through the air passage. A blocking structure is formed around the first through hole. The blocking structure blocks communication between the inside of the drive unit and the air path.
Here, since a blocking structure that blocks the communication between the inside of the drive unit and the air passage is formed, condensation of motors and mechanical parts due to leakage of conditioned air from the air passage to the drive unit of the wind direction changing means It is possible to prevent.

The indoor unit of the air conditioner of the second invention is the indoor unit of the first invention, and the blocking structure has a first fitting portion. The first fitting portion is configured by fitting the rotation output shaft and the first through hole of the air passage constituting member.
Here, since the interruption | blocking structure has the 1st fitting part comprised by the rotation output shaft and the 1st through-hole of an air path structure member being fitted, a rotation output shaft and an air path structure member By fitting with the first through hole, it is possible to prevent leakage of conditioned air.

The indoor unit of the air conditioner of the third invention is the indoor unit of the second invention, and the first fitting portion further includes a sealing material. The sealing material is disposed between the rotation output shaft and the inner surface of the first through hole.
Here, since the first fitting portion further includes a sealing material disposed between the rotation output shaft and the inner surface of the first through hole, the airtightness in the first fitting portion is further improved, It is possible to improve the effect of preventing the conditioned air from leaking.

The indoor unit of the air conditioner of the fourth invention is the indoor unit of the third invention, and the sealing material is grease.
Here, since the sealing material is grease, it is possible to improve the effect of preventing the leakage of conditioned air and improve the lubrication of the rotary output shaft.

An indoor unit for an air conditioner according to a fifth aspect of the present invention is the indoor unit according to any one of the first to fourth aspects, wherein the blocking structure has a second fitting portion. The second fitting portion is configured by fitting a rotation output shaft and a second through hole formed in the case.
Here, since the blocking structure has the second fitting portion configured by fitting the rotation output shaft and the second through hole formed in the case, the rotation output shaft and the second penetration of the case are provided. By fitting with the holes, it is possible to prevent leakage of conditioned air.

An indoor unit of an air conditioner according to a sixth aspect of the present invention is the indoor unit of the second aspect, wherein the blocking structure has a third fitting portion. The third fitting portion is configured by fitting a convex portion and a concave portion. The convex portion is formed around the first through hole in the air passage constituting member. The recess is formed in the case.
Here, since the blocking structure has a third fitting portion configured by fitting a convex portion formed around the first through hole in the air passage component and a concave portion formed in the case. The fitting between the convex part of the air passage component and the concave part of the case improves the adhesion between the rotation output shaft and the inner surface of the first through hole, and can further improve the effect of preventing the conditioned air from leaking. is there.

An indoor unit of an air conditioner according to a seventh aspect of the present invention is the indoor unit according to any one of the first to sixth aspects of the present invention, wherein an air layer is formed to form an air layer on a surface of the case facing the air path constituent member. The unit is further provided.
Here, since the air layer forming part for forming an air layer is further provided on the surface of the case facing the air path component, the air layer prevents heat conduction between the inside of the case and the air path. It is possible to prevent the occurrence of condensation due to the temperature drop of the air inside the case.

An indoor unit of an air conditioner according to an eighth aspect is the indoor unit according to the seventh aspect, wherein the air layer forming part has a plurality of ribs. The air layer is formed between two adjacent ribs.
Here, the air layer formed between two ribs adjacent to each other prevents heat conduction between the inside of the case and the air passage, thereby preventing the occurrence of condensation due to the temperature drop of the air inside the case. Is possible.

  An indoor unit of an air conditioner according to a ninth aspect is the indoor unit according to any one of the first to eighth aspects, further comprising a heat insulating material. The heat insulating material is arrange | positioned between the air path structural member and the case.

  Here, the heat insulating material disposed between the air passage component and the case prevents heat conduction between the inside of the case and the air passage, thereby preventing the occurrence of condensation due to the temperature drop of the air inside the case. It is possible.

According to the first aspect of the present invention, it is possible to prevent condensation of the motor and the mechanical parts due to the leakage of conditioned air from the air passage to the drive unit of the air direction changing means.
According to the second aspect of the present invention, it is possible to prevent leakage of conditioned air by fitting the rotation output shaft and the first through hole of the air path constituent member.
According to the third invention, the airtightness in the first fitting portion is further improved, and the effect of preventing the conditioned air from leaking can be improved.

According to the fourth aspect of the present invention, the effect of preventing the conditioned air from leaking can be improved and the rotation output shaft can be lubricated.
According to the fifth aspect of the present invention, leakage of conditioned air can be prevented by fitting the rotary output shaft and the second through hole of the case.
According to the sixth aspect of the present invention, the fitting between the convex portion of the air passage constituting member and the concave portion of the case improves the adhesion between the rotary output shaft and the inner surface of the first through hole, further improving the effect of preventing the leakage of conditioned air. Can be improved.

According to the seventh aspect of the present invention, the heat conduction between the inside of the case and the air passage can be prevented by the air layer, and the occurrence of condensation due to the temperature drop of the air inside the case can be prevented.
According to the eighth invention, the air layer formed between two adjacent ribs prevents heat conduction between the inside of the case and the air passage, thereby preventing the occurrence of dew condensation due to the temperature drop of the air inside the case. Can be prevented.

  According to the ninth aspect of the present invention, the heat insulating material disposed between the air passage constituting member and the case prevents heat conduction between the inside of the case and the air passage and prevents condensation due to a temperature drop of the air inside the case. Occurrence can be prevented.

[Overall configuration of indoor unit 1 of air conditioner]
FIG. 1 is a longitudinal sectional view showing an internal configuration of an indoor unit of an air conditioner according to an embodiment of the present invention.
The indoor unit 1 is used by being attached to an indoor wall surface or the like, and mainly includes a bottom case 2 having an air passage component 2a, an upper case 3, a main body portion having an indoor heat exchanger 4 and a cross flow fan 8. A horizontal wind direction plate 5 which is a wind direction changing means and a drive unit 6 are included.

  The bottom case 2 covers the bottom side and the back side of the main body portions such as the indoor heat exchanger 4 and the cross flow fan 8. The upper case 3 is fitted to the bottom case 2 so as to cover the front side of the main body portion. On the upper surface side of the bottom case 2, an air passage component 2 a that forms the air passage 7 is formed. As shown in FIG. 3, the air passage component 2 a is formed with a first through hole 15 through which the rotation output shaft 14 passes through the inside of the air passage 7.

  The upper case 3 constitutes the front part of the indoor unit 1. The upper case 3 is provided with suction ports 3a and 3b. The indoor heat exchanger 4 is disposed so as to face the circumferential surface of the cross flow fan 8 and is attached so as to surround the front, upper, and rear of the cross flow fan 8. In the indoor heat exchanger 4, heat is generated between the air sucked into the cross flow fan 8 from the suction ports 3 a and 3 b when the cross flow fan 8 is rotated and the refrigerant passing through the interior of the indoor heat exchanger 4. Exchange is performed.

Further, the upper case 3 is provided with an air outlet 9 formed of an opening along the long side direction (width direction) of the indoor unit 1. From this blower outlet 9, the airflow produced | generated by the crossflow fan 8 is blown off indoors.
The air path 7 rectifies the air flow generated by the cross flow fan 8 and guides it to the air outlet 9. The air path 7 is formed by combining the bottom case 2 and the top case 3. A plurality of horizontal wind direction plates 5 and horizontal flaps 10 are provided inside the air passage 7.

As shown in FIG. 2, the plurality of horizontal wind direction plates 5 are attached to the mounting plate 20 so that the upper portions thereof can swing left and right. The mounting plate 20 is fixed to the bottom case 2.
Further, the plurality of horizontal wind direction plates 5 are connected via the connecting pin 19, the connecting rod 17, the connecting pin 18 and the arm 16 so as to be able to swing left and right by the rotational driving force of the rotational output shaft 14 of the drive unit 6. Are connected to the rotation output shaft 14. Specifically, the plurality of horizontal wind direction plates 5 are connected to a common connecting rod 17 by connecting pins 19. Each horizontal wind direction plate 5 is connected to a connecting rod 17 so as to be rotatable around a connecting pin 19. The connecting rod 17 is connected to an arm 16 fixed to the rotation output shaft 14 via a connecting pin 18. The connecting rod 17 is connected to the arm 16 so as to be rotatable around the connecting pin 18.

  The horizontal flap 10 is for guiding the airflow blown into the room up and down, and is disposed in the vicinity of the air outlet 9. The horizontal flap 10 is a rectangular plate-like member that is long in the long side direction of the air outlet 9. The horizontal flap 10 is rotatable about an axis parallel to the long side direction of the air outlet 9 and is driven to rotate by a flap motor (not shown). Thereby, the horizontal flap 10 can guide the air flow up and down and can block the air outlet 9.

<Configuration of drive unit 6>
As shown in FIGS. 3 to 5, the drive unit 6 includes a motor 11, a link mechanism 12 that is a mechanism component that transmits the output of the motor 11, a case 13 that covers the motor 11 and the link mechanism 12, and a link mechanism. And a rotation output shaft 14 for outputting the output of the motor 11 transmitted through the case 12 to the outside of the case 13.

The motor 11 is formed of a stepping motor, and can transmit a rotational driving force to the link mechanism 12 by selecting either a clockwise rotation direction or a counterclockwise rotation direction according to an input signal.
The link mechanism 12 transmits the rotational driving force of the motor 11 to the rotational output shaft 14. The link mechanism 12 includes a first arm 12a coupled to the drive shaft 11a of the motor 11, a coupling rod 12b, a coupling pin 12c that rotatably couples the first arm 12a and the coupling rod 12b, and a rotation output shaft. 14, a second arm 12 d connected to 14, and a connecting pin 12 e that connects the connecting rod 12 b and the second arm 12 d in a rotatable manner.

The case 13 includes a case main body 13a opened downward and a bottom lid 13b.
As shown in FIG. 4, a blocking structure that blocks communication between the inside of the drive unit 6 and the air path 7 is formed around the first through hole 15 in the air path component 2 a of the bottom case 2. . The blocking structure of the present embodiment has three fitting portions, that is, a first fitting portion 21, a second fitting portion 23, and a third fitting portion 27.

The first fitting portion 21 is configured by fitting the rotation output shaft 14 and the first through hole 15 of the air passage component 2 a of the bottom case 2.
The first fitting portion 21 further includes grease 22 as a seal material disposed between the rotation output shaft 14 and the inner surface of the first through hole 15. The grease 22 can further improve the effect of preventing the leakage of conditioned air from the first through-hole 15 and improve the lubrication of the rotary output shaft 14.

The second fitting portion 23 is configured by fitting the rotation output shaft 14 and the second through hole 24 formed in the case 13.
The third fitting portion 27 is configured by fitting a convex portion 28 and a concave portion 29. The convex portion 28 is formed around the first through hole 15 in the air passage component 2 a of the bottom case 2. The recess 29 is formed in the case 13.

<Configuration of Air Layer Formation Unit 31>
The indoor unit 1 further includes an air layer forming unit 31 for forming an air layer 32 on the surface of the case 13 that faces the air path component 2a.
The air layer forming part 31 has a plurality of ribs 33. The air layer 32 is formed between two ribs 33 adjacent to each other.
In this manner, heat conduction between the inside of the case 13 and the air passage 7 can be prevented by the air layer 32 formed on the upper surface of the case 13.

<Configuration of heat insulating material 34>
As shown in FIG. 3, the indoor unit 1 further includes a heat insulating material 34 disposed between the air path component 2 a of the bottom case 2 and the case 13 of the drive unit 6. The heat insulating material 34 is manufactured with the sheet-like material which has heat insulation. The heat insulating material 34 is disposed so as to cover a portion of the upper surface of the case 13 where the air layer forming portion 31 is formed. Since the opening 34 a is formed in the heat insulating material 34 at a position corresponding to the rotation output shaft 14 and the recess 29 of the drive unit 6, the rotation output shaft 14 and the recess 29 are formed in the first through hole 15 of the bottom case 2. It is possible to engage with the convex portion 28 (see FIG. 4).

<Features>
(1)
In the indoor unit 1 of the embodiment, a blocking structure (the first fitting portion 21, the second fitting portion 23, and the third fitting portion 27) that blocks communication between the inside of the drive unit 6 and the air passage 7 is formed. Therefore, it is possible to prevent the condensation of mechanical parts such as the motor 11 and the link mechanism 12 due to leakage of conditioned air from the air passage 7 to the drive unit 6 of the horizontal wind direction plate 5.

(2)
In the indoor unit 1 of the embodiment, the blocking structure includes the first fitting portion 21 configured by fitting the rotation output shaft 14 and the first through hole 15 of the air passage component 2a. By fitting the output shaft 14 with the first through hole 15 of the air passage component 2a, it is possible to prevent leakage of conditioned air.

(3)
In the indoor unit 1 of the embodiment, the first fitting portion 21 further includes the grease 22 as a sealing material disposed between the rotation output shaft 14 and the inner surface of the first through hole 15. It is possible to further improve the airtightness at the joint portion 21 and improve the effect of preventing conditioned air from leaking.
(4)
In the indoor unit 1 of the embodiment, since the grease 22 is used as the sealing material, it is possible to improve the effect of preventing the conditioned air from leaking and improve the lubrication of the rotary output shaft 14.

(5)
In the indoor unit 1 of the embodiment, since the blocking structure includes the second fitting portion 23 configured by fitting the rotation output shaft 14 and the second through hole 24 formed in the case 13, By fitting the output shaft 14 and the second through hole 24 of the case 13, it is possible to prevent leakage of conditioned air.

(6)
In the indoor unit 1 of the embodiment, the blocking structure is a third structure in which the convex portion 28 formed around the first through hole 15 in the air passage component 2a and the concave portion 29 formed in the case 13 are fitted. Since the fitting portion 27 is provided, the fitting between the convex portion 28 of the air passage component 2 a and the concave portion 29 of the case 13 improves the adhesion between the rotation output shaft 14 and the inner surface of the first through hole 15. In addition, the effect of preventing the conditioned air from leaking can be further improved.

(7)
The indoor unit 1 of the embodiment further includes an air layer forming part 31 for forming an air layer 32 on a surface of the case 13 that faces the air passage component 2a. It is possible to prevent heat conduction with the air passage 7 and to prevent the occurrence of condensation due to the temperature drop of the air inside the case 13.

(8)
In the indoor unit 1 of the embodiment, the air layer 32 formed between two adjacent ribs 33 prevents heat conduction between the inside of the case 13 and the air passage 7 and the air inside the case 13. It is possible to prevent the occurrence of condensation due to a decrease in temperature.
(9)
The indoor unit 1 according to the embodiment prevents heat conduction between the inside of the case 13 and the air path 7 by the heat insulating material 34 disposed between the air path constituting portion 2 a and the case 13. It is possible to prevent the occurrence of condensation due to a decrease in air temperature.

<Modification>
(A)
In the above embodiment, the horizontal wind direction plate 5 is adopted as the wind direction changing means. However, the present invention is not limited to this, and besides the horizontal wind direction plate, the vertical wind direction of the horizontal flaps 9, 10, etc. A means for changing the angle can also be used as the wind direction changing means of the present invention.

(B)
In the above embodiment, the air passage component 2a of the bottom case 2 is used as the air passage constituent member constituting the air passage 7, but the present invention is not limited to this, and is separate from the bottom case 2. A body member may be used as an airway constituent member.

  The present invention can be applied to an indoor unit of an air conditioner including a motor that drives a horizontal wind direction plate.

The longitudinal cross-sectional view of the indoor unit of the air conditioner concerning embodiment of this invention. The block diagram of the part around the horizontal wind direction board of the indoor unit of FIG. The disassembled perspective view which shows the state before mounting | wearing of the drive unit of FIG. FIG. 2 is an enlarged cross-sectional view around a rotation output shaft of the indoor unit in FIG. 1. The perspective view which shows the internal structure of the drive unit of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Bottom frame 2a Air path component 5 Horizontal wind direction board 6 Drive unit 7 Air path 11 Motor 12 Link mechanism 13 Case 14 Rotation output shaft 15 1st through-hole 21 1st fitting part 22 Grease 23 2nd fitting Part 24 second through hole 27 third fitting part 28 convex part 29 concave part 31 air layer forming part 32 air layer 33 rib 34 heat insulating material

Claims (9)

An airway constituent member (2a) which is a member constituting the airway (7);
A wind direction changing means (5) installed inside the air path (7) and changing the wind direction of the conditioned air blown into the room;
A drive unit (6) installed outside the air passage (7) and driving the air direction changing means (5)
And
The drive unit (6) includes a motor (11), a mechanical component (12) that transmits the output of the motor (11), a case (13) that covers the motor (11) and the mechanical component (12), A rotation output shaft (14) for outputting the output of the motor (11) transmitted through the mechanical component (12) to the outside of the case (13);
The air passage component (2a) is formed with a first through hole (15) for passing the rotation output shaft (14) through the air passage (7).
A blocking structure that blocks communication between the inside of the drive unit (6) and the air passage (7) is formed around the first through hole (15).
Air conditioner indoor unit (1). The blocking structure includes a first fitting portion (21) configured by fitting the rotation output shaft (14) and the first through hole (15) of the air passage component (2a). Yes,
The indoor unit (1) according to claim 1. The first fitting portion (21) further includes a sealing material disposed between the rotation output shaft (14) and the inner surface of the first through hole (15).
The indoor unit (1) according to claim 2. The sealing material is grease (22).
The indoor unit (1) according to claim 3. The blocking structure includes a second fitting portion (23) configured by fitting the rotation output shaft (14) and a second through hole (24) formed in the case (13). Yes,
The indoor unit (1) according to any one of claims 1 to 4. In the blocking structure, a convex part (28) formed around the first through hole (15) in the air passage component (2a) and a concave part (29) formed in the case (13) are fitted. Having a third fitting portion (27) configured as
The indoor unit (1) according to claim 2. An air layer forming part (31) for forming an air layer (32) on a surface of the case (13) facing the air path constituent member (2a);
The indoor unit (1) according to any one of claims 1 to 6. The air layer forming part (31) has a plurality of ribs (33),
The air layer (32) is formed between the two adjacent ribs (33),
The indoor unit (1) according to claim 7. A heat insulating material (34) disposed between the air path component (2a) and the case (13);
The indoor unit (1) according to any one of claims 1 to 8.

Images