JP6268586B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner for performing air conditioning in a room, and more particularly to prevention of dew condensation at an air outlet in the air conditioner.

  In an air conditioner used in a general household, in order to suppress noise and vibration in the room, a large noise source such as a compressor and a vibration source are usually provided in the outdoor unit to reduce noise and vibration. A separator type in which a small number of fans, heat exchangers, and the like are arranged in an indoor unit is used. The indoor unit configured as described above is installed on a wall surface or the like in the room, and an air conditioning operation is performed so that the room has a desired temperature. The outdoor unit and the indoor unit are mechanically and electrically connected to each other by a refrigerant pipe and a control wiring, and perform an air conditioning operation in cooperation with each other.

  The indoor unit of the air conditioner is provided with a blowout port for blowing out temperature-controlled air into the room, and the blowout port is provided with a wind direction changing means for changing the direction of the blown air. ing. As the air direction changing means, in order to send out the air blown from the outlet toward a desired area in the room, the air flow changed from the outlet to the upper and lower air direction changing blades for changing the flow of the air in the vertical direction, and from the outlet There is used a wind direction changing blade composed of left and right wind direction changing blades that change the flow of the blown air in the left and right direction.

  As an up-and-down air direction change blade in a conventional air conditioner, for example, it projects from the air outlet when the air conditioner is operating, changes the flow direction of the air blown from the air outlet, and when the air conditioner is stopped, the air outlet (For example, refer to Patent Document 1).

Japanese Patent No. 4110863

  In an indoor unit of an air conditioner, heat-exchanged air flows along a rear guider provided on the downstream side of a fan for sending out air, and a vertical wind direction changing blade provided rotatably at the downstream end of the rear guider It is the structure which blows off from a blower outlet. The up-and-down air direction changing blade has a function of opening and closing a blow-out port for blowing out into the room and greatly changing the air blowing direction up and down.

  In the conventional air conditioner configured as described above, since the up / down air direction changing blade is rotatably provided at the downstream end of the rear guider, the air flowing along the rear guider changes the rear guider and the up / down air direction. The air flowed into the gap between the blades, and during the cooling operation, there was a problem that the cold air flowing into the gap caused dew condensation in the vicinity of the air outlet.

In addition, when the up / down air direction change blade is rotatably provided at the downstream end of the stabilizer, the air flowing along the stabilizer similarly flows into the gap between the stabilizer and the up / down air direction change blade, During operation, there was a problem that dew condensation was generated in the vicinity of the outlet due to the cold air flowing into the gap.

  Further, the conventional up / down airflow direction changing blade has a problem in that further performance improvement cannot be obtained because an effect as a diffuser cannot be obtained.

  An object of the present invention is to provide a highly reliable air conditioner that can suppress the occurrence of condensation near the air outlet during cooling operation, which is a problem in conventional air conditioners as described above. .

In order to achieve the above object, in the air conditioner according to the present invention,
A body having an air intake and an air outlet;
A heat exchanger for exchanging heat from the air taken from the intake;
A fan for generating an air flow for exchanging heat in the heat exchanger and blowing out from the outlet;
A diffuser that is arranged downstream of the fan to guide the air flow to the outlet and gradually expands the cross-sectional area of the flow path;
A vane that is rotatably provided downstream of the diffuser and that controls the air flowing along the diffuser in a vertical direction.
A bearing portion that is provided continuously to the downstream end of the diffuser and disposed opposite to the rotating portion that is the upstream end of the blade, with a predetermined gap;
The bearing portion is provided with a heat transfer blocking gap that suppresses heat conduction from the diffuser to the main body.

  ADVANTAGE OF THE INVENTION According to this invention, the reliable air conditioner which can suppress generation | occurrence | production of the dew condensation at the time of the cooling operation in the blower outlet vicinity can be provided.

FIG. 1 is a longitudinal sectional view showing a schematic configuration of an indoor unit in an air conditioner according to Embodiment 1 of the present invention. FIG. 2 is a longitudinal sectional view showing a state during air conditioning operation in the air conditioner of the first embodiment. FIG. 3 is a longitudinal sectional view showing an operation example of the up / down air direction changing blades during the air conditioning operation in the air conditioner of the first embodiment. FIG. 4 is a longitudinal sectional view showing an operation example of the up / down air direction changing blades during the air conditioning operation in the air conditioner of the first embodiment. FIG. 5 is a longitudinal sectional view showing an operation example of the up / down air direction changing blades during the air conditioning operation in the air conditioner of the first embodiment. 6 is an enlarged longitudinal sectional view showing a dew condensation prevention mechanism in the air conditioner of Embodiment 1. FIG. FIG. 7 is an enlarged longitudinal sectional view showing a dew condensation prevention mechanism in the air conditioner according to Embodiment 2 of the present invention. FIG. 8 is an enlarged longitudinal sectional view showing the dew condensation prevention mechanism in the air conditioner according to Embodiment 3 of the present invention. FIG. 9 is a longitudinal sectional view showing a schematic configuration of the indoor unit during operation of the air conditioner according to the fourth embodiment of the present invention. FIG. 10 is a longitudinal sectional view showing a schematic configuration of the indoor unit during operation of the air conditioner according to the fourth embodiment of the present invention. FIG. 11 is a longitudinal sectional view showing a schematic configuration of the indoor unit during operation of the air conditioner according to Embodiment 4 of the present invention. FIG. 12 is an enlarged longitudinal sectional view showing a dew condensation prevention mechanism provided in the air conditioner according to Embodiment 4 of the present invention. FIG. 13 is an enlarged longitudinal sectional view showing a dew condensation prevention mechanism provided in the air conditioner according to Embodiment 4 of the present invention. FIG. 14 is an enlarged longitudinal sectional view showing a dew condensation prevention mechanism provided in the air conditioner of Embodiment 5 according to the present invention.

The air conditioner according to the first aspect of the present invention includes:
A body having an air intake and an air outlet;
A heat exchanger for exchanging heat from the air taken from the intake;
A fan for generating an air flow for exchanging heat in the heat exchanger and blowing out from the outlet;
A diffuser that is arranged downstream of the fan to guide the air flow to the outlet and gradually expands the cross-sectional area of the flow path;
A vane that is rotatably provided downstream of the diffuser and that controls the air flowing along the diffuser in a vertical direction.
A bearing portion that is provided continuously to the downstream end of the diffuser and disposed opposite to the rotating portion that is the upstream end of the blade, with a predetermined gap;
The bearing portion is provided with a heat transfer blocking gap that suppresses heat conduction from the diffuser to the main body.
The air conditioner according to the first aspect of the present invention configured as described above is a highly reliable air conditioner that can suppress the occurrence of condensation near the air outlet during the cooling operation.

In the air conditioner according to the second aspect of the present invention, the diffuser according to the first aspect includes a rear guider that is arranged downstream of the fan and guides a flow of air to the outlet.
The blade has a first blade that is rotatably provided downstream of the rear guider and controls a flow direction of air flowing along the rear guider.
A first bearing disposed so as to be opposed to the rotating portion serving as an upstream end of the first blade, with a predetermined gap, the bearing provided continuously at the downstream end of the rear guider; A second bearing that is provided to the first bearing via a heat transfer blocking gap and that is continuous with the main body.
The air conditioner according to the second aspect of the present invention configured as described above can suppress the heat conduction from the rear guider to the main body during the cooling operation, and can suppress the occurrence of condensation near the air outlet.

In the air conditioner according to the third aspect of the present invention, the diffuser according to the first aspect is disposed downstream of the fan to guide the air flow to the outlet, and the rear guider Having a stabilizer arranged oppositely,
The blade is provided to be rotatable downstream of the rear guider, and is provided to be rotatable at a downstream side of the stabilizer, a first blade for controlling a flow direction of the air flowing along the rear guider, A second vane for controlling the flow direction of the air flowing along the stabilizer,
A first bearing disposed opposite to the rotating portion serving as an upstream end of the second blade with a predetermined gap, the bearing portion provided continuously at the downstream end of the stabilizer; A second bearing that is provided to the first bearing via a heat transfer blocking gap and that is continuous with the main body.
The air conditioner according to the third aspect of the present invention configured as described above can suppress the heat conduction from the stabilizer to the main body during the cooling operation, thereby suppressing the occurrence of condensation near the air outlet.

In the air conditioner according to the fourth aspect of the present invention, the cross-sectional shape perpendicular to the drive shaft of the rotating portion that is the upstream end of the first blade in the second aspect is centered on the drive shaft. And has an arc-shaped appearance
The first bearing is formed in a hollow shape facing the rotating portion of the first blade;
The second bearing is disposed below the first bearing through a heat transfer blocking gap.
The air conditioner according to the fourth aspect of the present invention configured as described above has a configuration capable of suppressing heat conduction between the rear guider portion and the second bearing by the heat transfer blocking gap, and is provided for cooling operation. At this time, it is possible to prevent the cooling of the rear guider that is cooled by the cold air from being transmitted to the vicinity of the air outlet, and to suppress the occurrence of condensation in the vicinity of the air outlet, particularly in the lower edge of the air outlet.

In the air conditioner according to the fifth aspect of the present invention, the second bearing in the fourth aspect is on the back side from the vertical line extending downward from the lower end of the concave shape of the first bearing. Is arranged.
In the air conditioner according to the fifth aspect of the present invention configured as described above, the airflow that has entered the gap between the blade and the bearing portion is prevented from directly contacting the second bearing. In the cooling operation, the second bearing is less likely to cause dew condensation.

An air conditioner according to a sixth aspect of the present invention is the air conditioner according to the fourth aspect, wherein the second bearing has a facing surface extending downward from the heat transfer blocking gap, and the facing surface is a vertical surface. It consists of
In the air conditioner according to the sixth aspect of the present invention configured as described above, the airflow that has entered the gap between the blade and the bearing portion is prevented from directly contacting the second bearing. This is a configuration.

An air conditioner according to a seventh aspect of the present invention is the air conditioner according to the fourth aspect, wherein the second bearing has a facing surface extending downward from the heat transfer blocking gap, and the facing surface is below the front surface. It consists of a slanted surface facing side.
In the air conditioner according to the seventh aspect of the present invention configured as described above, the airflow that has entered the gap between the blades and the bearing portion can surely directly contact the second bearing. This is a configuration that is prevented.

An air conditioner according to an eighth aspect of the present invention is the air conditioner according to any one of the first to seventh aspects, wherein the air flowing between the rotating part of the blade and the bearing part is A moisture holding part that adsorbs moisture of the air is provided in the passage.
The air conditioner according to the eighth aspect of the present invention configured as described above can suppress the splashing and dripping of water droplets even when condensation occurs in the vicinity of the air outlet during cooling operation. It becomes a high air conditioner.

  Hereinafter, embodiments of the air conditioner of the present invention will be described with reference to the accompanying drawings. In addition, in the air conditioner of the following embodiment, although a specific structure is demonstrated, this invention is not limited to the specific structure of the following embodiment, The same technical idea It includes various air conditioners to which the configuration based on the above is applied.

(Embodiment 1)
The air conditioner of Embodiment 1 is a so-called separator type air conditioner in which an indoor unit and an outdoor unit are connected to each other by a refrigerant pipe, a control wiring, and the like. The indoor unit and the outdoor unit constitute a heat pump, and the outdoor unit is provided with a compressor. The indoor unit in the air conditioner of Embodiment 1 is a wall-mounted indoor unit that is attached to a wall surface in the room.

  FIG. 1 is a longitudinal sectional view showing a schematic configuration of an indoor unit in an air conditioner according to Embodiment 1 of the present invention. FIG. 1 shows a state when the air-conditioning operation of the air conditioner of Embodiment 1 is stopped.

  As shown in FIG. 1, the indoor unit 1 includes a main body 2 having a front opening 2a and an upper opening 2b that serve as air intakes, and a blowout port 2c that blows out heat-exchanged air, A movable front panel 3 that opens and closes the opening 2a is provided. Inside the main body 2, a filter 4 for removing dust contained in room air, a heat exchanger 5 for exchanging heat of the taken room air, and the front opening 2 a and the upper surface opening 2 b are taken in through the filter 4. And a fan 6 that is a cross-flow fan for generating an air flow for exchanging heat of the indoor air with the heat exchanger 5 and blowing it out of the air outlet 2c into the room. Further, in the main body 2 of the indoor unit 1, a ventilation path 10 extending from the downstream side of the fan 6 to the upstream side of the air outlet 2 c is disposed on the downstream side of the fan 6 and a rear guider 7 that guides the flow of air, and the rear guider 7 is formed by a stabilizer 11 disposed so as to face 7 and both side walls (not shown) of the main body 2. In the air conditioner of the first embodiment, the diffuser is configured by the downstream portion of the rear guider 7 and the downstream portion of the stabilizer 11, and the flow passage cross-sectional area in the ventilation passage 10 from the fan 6 to the outlet 2c gradually increases. It is configured to Note that the term “stabilizer” described above is referred to as a stabilizer only in the vicinity of the tongue portion that is located in the vicinity of the downstream side of the fan 6 and has a curved surface shape for stabilizing the vortex generated in the vicinity of the front portion of the fan 6. However, here, it is called “stabilizer” including the wall portion that is located on the downstream side of the tongue and forms the upper side of the diffuser that is responsible for the pressure recovery of the air conveyed by the fan 6.

  In the air outlet 2c for blowing out the heat exchanged air in the air conditioner of the first embodiment, the air outlet 2c can be opened and closed and the air blowing direction can be changed in the vertical direction. A vertical airflow direction changing blade 8 is provided. Furthermore, left and right wind direction changing blades 9 which are left and right wind direction changing portions capable of changing the air blowing direction to the left and right are provided inside the air outlet 2c.

  In the state at the time of stopping the air conditioning operation shown in FIG. 1, the front panel 3 is configured to be in close contact with the main body 2 and close the front opening 2a, and the up / down airflow direction changing blade 8 is housed in the outlet 2c. The blower outlet 2c is configured to be closed.

  FIG. 2 is a longitudinal sectional view showing a state during the air conditioning operation in the air conditioner of the first embodiment. As shown in FIG. 2, the front panel 3 is configured to move a predetermined distance in a direction away from the main body 2 to open the front opening 2 a.

  The up-and-down air direction changing blade 8 includes a lower blade 8a that is an example of a first blade and an upper blade 8b that is an example of a second blade provided above the lower blade 8a. The upper and lower wind direction changing blades 8 control the blowing direction of the air blown out from the air outlet 2c in cooperation with the lower blade 8a and the upper blade 8b. The lower blade 8a is configured to rotate by a predetermined angle by the rotation operation of the lower blade drive shaft. The upper blade 8b is configured to rotate and move toward and away from the lower blade 8a while being held substantially parallel to the lower blade 8a by control, for example. In the first embodiment, the up / down wind direction changing blade 8 is rotatably provided downstream of the diffuser, and controls the air flowing along the diffuser in the up / down direction.

  Note that a guide mini blade 8c, which is an example of a third blade, is provided on the upper blade 8b of the vertical wind direction changing blade 8. The guide mini blade 8c has a function of generating an air flow that protects the main flow formed by the lower blade 8a and the upper blade 8b. Thus, by providing the guide mini blade 8c on the upper surface of the upper blade 8b, mixing of the surrounding air to the main flow is prevented, and the attenuation of the flow in the main flow is suppressed.

  The left and right wind direction changing blades 9 are composed of a plurality of blades, and are controlled to change the blowing direction of the air blown out from the outlet 2c to the left and right directions.

  When the air conditioner starts the air conditioning operation, the front panel 3 is moved away from the main body 2 by a predetermined distance to open the front opening 2a, and the up / down wind direction changing blade 8 is opened to open the air outlet 2c. Is done. Thus, the fan 6 is driven in a state where the front opening 2a and the air outlet 2c are opened, and the indoor air is taken into the indoor unit 1 through the front opening 2a and the upper opening 2b. The taken-in room air passes through the filter 4, undergoes heat exchange in the heat exchanger 5, and is sucked into the fan 6. The heat-exchanged air sucked into the fan 6 passes through the ventilation path 10 formed on the downstream side of the fan 6 and is blown out from the air outlet 2c.

  When the air from the fan 6 passes through the ventilation path 10, the air from the fan 6 is guided by the rear guider 7 and the diffuser of the stabilizer 11 disposed on the downstream side of the fan 6, and is blown out from the air outlet 2 c. Air from the fan 6, which is a cross-flow fan, flows along the curved surface of the rear guider 7 provided on the outer periphery of the fan 6 and is blown out from the air outlet 2 c.

  The blowing direction of the air blown out from the air outlet 2c is controlled by the up / down air direction changing blade 8 and the left / right air direction changing blade 9. Operations such as angle adjustment of the up / down air direction changing blade 8 and the left / right air direction changing blade 9 are controlled by a control device (not shown) that controls the air conditioner.

[Operation of up and down wind direction change blade]
3 to 5 show an example of the operation of the up / down air direction changing blade 8 during the air-conditioning operation in the air conditioner of Embodiment 1, and the rotation operation of the lower blade 8a and the upper blade 8b forming the main flow is shown. It is a longitudinal cross-sectional view shown. The up-and-down wind direction changing blade 8 has a configuration in which the upper blade 8b is rotated together with the lower blade 8a by the rotation of the drive shaft that drives the lower blade 8a. The up-and-down air direction change blade 8 in the air conditioner of Embodiment 1 is provided at the outlet 2c at the downstream end (downstream end) of the rear guider 7 so that the air blown from the outlet 2c can be smoothly supplied to a desired region. In particular, the lower blade 8a is in a position where the rear guider 7 is extended, and exhibits a function as a diffuser having a high rectifying effect on the air from the air outlet 2c.

  FIG. 3 shows an operation example in which the blowing surface 8aa of the lower blade 8a is linearly arranged so as to be substantially continuous with the downstream end surface of the guide surface 7a of the rear guider 7. In the operation example shown in FIG. 3, the air from the blower outlet 2c is blown diagonally downward, and shows the state at the maximum air volume. The up-and-down wind direction changing blade 8 at this time exhibits the function as a diffuser to the maximum. In addition, the blowing surface 8aa of the lower blade 8a is an upward surface in FIG. 3, and is a surface along which a main flow of air blown from the blowout port 2c flows.

  FIG. 4 is an operation example in which the blowout surface 8aa of the lower blade 8a is disposed with an obtuse angle with respect to the surface of the downstream end portion of the guide surface 7a of the rear guider 7, and the air from the blowout port 2c The blowing direction is a substantially horizontal direction. FIG. 4 is an operation example during a general cooling operation.

  FIG. 5 shows that the blowing surface 8aa of the lower blade 8a is directed vertically downward from the blowing direction of the guide surface 7a of the rear guider 7, that is, the direction of the extension line G on the outlet side extending along the guide surface 7a. In addition, the blowing direction of air from the outlet 2c is a substantially downward direction. FIG. 5 is an operation example during normal heating operation.

[Condensation prevention mechanism provided between the rear guider and lower blade]
In the air conditioner of the first embodiment configured as described above, a dew condensation prevention mechanism is provided between the lower blade 8 a of the vertical airflow direction changing blade 8 and the rear guider 7.

  FIG. 6 is an enlarged longitudinal sectional view showing a dew condensation prevention mechanism provided between the lower blade 8 a and the rear guider 7. As shown in FIG. 6, at the downstream end portion of the guide surface 7a of the rear guider 7, a bearing portion 13 disposed with a predetermined gap with respect to the lower blade 8a is continuously provided and fixed. . This bearing part 13 is comprised by the 1st bearing 13a which has the hollow shape whose cross section is circular arc shape, and the 2nd bearing 13b provided in the downward direction of the 1st bearing 13a. A slit (heat transfer blocking gap) 16 is formed between the first bearing 13a and the second bearing 13b. As will be described later, the heat transfer blocking gap that is the slit is configured to suppress heat conduction from the rear guider 7 that is the diffuser to the main body 2. In addition, in the structure of Embodiment 1, although shown in the example in which the 1st bearing 13a and the 2nd bearing 13b are integrally molded, you may comprise by another member.

  The drive shaft portion 8ab, which is a rotating portion at the upstream end of the lower blade 8a that is the blade of the up / down airflow direction changing blade 8, has a cross-sectional shape perpendicular to the drive shaft that rotates the lower blade 8a as the center. It has an arcuate appearance. The drive shaft portion 8ab is disposed so as to be housed in the indented surface of the first bearing 13a. That is, the indentation surface of the first bearing 13a and the outer surface of the drive shaft portion 8ab of the lower blade 8a are arranged to face each other with a slight predetermined gap, and oppose the indentation surface of the first bearing 13a. A drive shaft portion 8ab of the lower blade 8a is provided.

  As described above, the second bearing 13b is provided below the arc-shaped portion of the first bearing 13a, and between the lower end portion of the first bearing 13a and the upper end portion of the second bearing 13b. A slit (heat transfer blocking gap) 16 is formed. That is, the second bearing 13 b is disposed below the first bearing 13 a with the heat transfer blocking gap 16 interposed therebetween. Therefore, it has a configuration in which heat conduction between the first bearing 13a and the second bearing 13b hardly occurs.

  Furthermore, as shown in FIG. 6, the second bearing 13 b is on the back side (on the right side in FIG. It is disposed at a position offset to the wall side of the machine 1. The facing surface 13ba, which is a surface extending downward from the slit 16 in the bearing portion 13 disposed so as to face the drive shaft portion 8ab that is the rotating portion of the lower blade 8a, is configured as a substantially vertical surface. Therefore, the airflow that has entered the gap 12 between the drive shaft portion 8ab of the lower blade 8a and the bearing portion 13 flows along the indented surface of the arcuate section of the first bearing 13a, and the second bearing 13b. It is the structure which does not contact directly.

  As shown in FIG. 6, in the inner space (holding space) 14 between the first bearing 13a and the second bearing 13b, a moisture adsorbent 15, which is a moisture holding part that adsorbs and holds moisture, for example, ignorant cloth. Is provided. In the air conditioner of Embodiment 1, as a dew condensation prevention mechanism provided between the lower blade 8a and the rear guider 7, heat transfer is interrupted with respect to the first bearing 13a following the rear guider 7 and the first bearing 13a. The second bearing 13b disposed via the gap (16) and the moisture adsorbent 15 in the holding space 14 may be included.

  Next, the operation of the dew condensation prevention mechanism configured as described above will be described. During air conditioning operation (cooling operation) in the air conditioner of Embodiment 1, air from the fan 6 flows along the guide surface 7a of the rear guider 7 arranged on the downstream side of the fan 6. The air that flows along the rear guider 7 is guided to the blowing surface 8aa of the lower blade 8a of the up / down airflow direction changing blade 8 and blown out from the outlet 2c. The flow of the air blown at this time is shown by the white arrow in FIG. As described above, when the air from the fan 6 flows from the rear guider 7 to the blowing surface 8aa of the lower blade 8a, the drive shaft portion 8ab that is a rotating portion of the lower blade 8a and the bearing portion 13 provided in the rear guider 7 A small amount of air (cold air) flows into the gap 12 (shown by a solid line arrow in FIG. 6).

  When the cold air flows into the gap 12 between the drive shaft portion 8ab of the lower blade 8a and the bearing portion 13 as described above, the cold air flows along the hollow surface of the arcuate section of the first bearing 13a, It is discharged to the lower side of the lower blade 8a. Since the second bearing 13b is disposed at an offset position on the back side from the vertical line E extending downward from the lower end of the arc surface (recessed surface) in the arc-shaped portion of the cross section of the first bearing 13a, the first bearing The cold air flowing along the hollow surface of the arcuate section of 13a is discharged substantially below the lower blade 8a without substantially contacting the second bearing 13b.

  In the configuration of the first embodiment, a slit (heat transfer blocking gap) 16 is formed between the lower end portion of the first bearing 13a and the upper end portion of the second bearing 13b. This is a structure in which heat is not easily transmitted between the bearing 13a and the second bearing 13b. Accordingly, during the cooling operation, the rear guider 7 and the first bearing 13a cooled by the cold air flowing along the rear guider 7 are difficult to cool the second bearing 13b, and the main body 2 constituting the appearance that is exposed indoors. Condensation in the joined second bearing 13b is prevented.

  Furthermore, in the dew condensation prevention mechanism in the air conditioner of Embodiment 1, the moisture condensed on the upper part of the slit flows into the holding space 14 through the slit 16, and the moisture adsorbent 15 as a moisture holding unit in the holding space 14. Thus, moisture is adsorbed and does not drip.

  As described above, the air conditioner according to Embodiment 1 of the present invention has a configuration capable of suppressing the occurrence of condensation during cooling operation, and has been guided and sent from the fan 6 to the rear guider 7. Air can be smoothly blown out in a desired direction by the up-and-down air direction changing blades 8 and has a highly reliable configuration with improved air blowing performance.

(Embodiment 2)
Next, the air conditioner of Embodiment 2 which concerns on this invention is demonstrated using FIG. FIG. 7 is an enlarged longitudinal sectional view showing a dew condensation prevention mechanism provided between the lower blade and the rear guider in the air conditioner of the second embodiment. In the air conditioner of the second embodiment, parts having the same functions and operations as those of the first embodiment are given the same numbers. The description is omitted. Further, since the basic configuration and operation of the air conditioner of the second embodiment are the same as the configuration and operation of the air conditioner of the first embodiment, the description of the second embodiment is the same as that of the first embodiment. A dew condensation prevention mechanism which is a different point will be described.

  As shown in FIG. 7, a first bearing 13 a having a hollow shape with a circular cross section is provided at the downstream end (downstream end) of the guide surface 7 a of the rear guider 7. A drive shaft portion 8ab that is a rotating portion of the lower blade 8a is disposed on the recessed surface of the first bearing 13a with a slight gap. A second bearing 13b is provided below the arcuate section of the first bearing 13a via a slit (heat transfer blocking gap) 16. The second bearing 13b is offset to the back side (the right side in FIG. 7 and the wall side of the indoor unit 1) from the vertical line E extending downward from the lower end of the recessed surface in the arcuate section of the first bearing 13a. Arranged in position.

  In the air conditioner of the first embodiment described above, the facing surface which is a surface extending downward from the slit 16 in the bearing portion 13 disposed so as to face the drive shaft portion 8ab which is the rotating portion of the lower blade 8a. 13ba was constituted by a substantially vertical plane. However, in the second embodiment, the opposing surface 13bb, which is a surface extending downward from the slit 16, is formed as an oblique surface (an oblique surface), and the oblique surface faces the lower front side. Has been. That is, the airflow that has entered the gap 12 between the drive shaft portion 8ab of the lower blade 8a and the bearing portion 13 flows along the indented surface of the arcuate section of the first bearing 13a, and the second bearing 13b. It is the structure which does not contact directly reliably.

  As shown in FIG. 7, the dew condensation preventing mechanism according to the second embodiment has a moisture adsorbent 15 that is a moisture retaining portion in the inner space (holding space) 14 between the first bearing 13a and the second bearing 13b. For example, an unfamiliar cloth is provided. Therefore, also in the air conditioner of the second embodiment, as a dew condensation prevention mechanism provided between the lower blade 8a and the rear guider 7, the first bearing 13a following the rear guider 7 and the first bearing 13a A second bearing 13b disposed with a slit (heat transfer blocking gap) 16 and a moisture adsorbent 15 in the holding space 14 may be included.

  As described above, the air conditioner according to the second embodiment of the present invention has a configuration capable of suppressing the occurrence of dew condensation during cooling operation, and air sent from the fan 6 via the rear guider 7. Can be blown out smoothly in a desired direction by the up-and-down air direction changing blade 8, and the up-and-down air direction changing blade 8 exhibits a function as a diffuser and is a highly reliable device with improved air blowing performance.

(Embodiment 3)
Next, an air conditioner according to Embodiment 3 of the present invention will be described with reference to FIG. FIG. 8 is an enlarged longitudinal sectional view showing a dew condensation prevention mechanism provided between the lower blade and the rear guider in the air conditioner of the third embodiment. In the air conditioner of the third embodiment, parts having the same functions and operations as those of the first embodiment are given the same numbers. The description is omitted. Further, the basic configuration and operation of the air conditioner of the third embodiment are the same as those of the air conditioner of the first embodiment, so that the description of the third embodiment is different from the first embodiment. A dew condensation prevention mechanism will be described.

  FIG. 8 is an enlarged vertical cross-sectional view showing a dew condensation prevention mechanism provided between the lower blade 8 a and the rear guider 7. As shown in FIG. 8, at the downstream end of the guide surface 7a of the rear guider 7, a bearing portion 130 disposed with a gap with respect to the lower blade 8a is continuously provided, and downstream of the guide surface 7a. It is fixed to the side end. The bearing portion 130 includes a first bearing 130a having a hollow shape in which a cross section of the portion facing the lower blade 8a has an arc shape, and a second bearing 130b provided below the first bearing 130a. It is configured. As shown in FIG. 8, in the air conditioner of the third embodiment, the second bearing 130b is formed with a slit (heat transfer blocking gap) 16, and the first bearing 130a and the second bearing 130b Is composed of a separate member.

  The first bearing 130a in the third embodiment is continuous with the guide surface 7a of the rear guider 7 and is formed on the lower side of the guide surface portion 130aa, the end of which is fitted to the rear guider 7, and below the guide surface portion 130aa. And a support portion 130ab having a cross-sectional arc-shaped portion facing the surface. The support part 130ab has a cross-sectional arc-shaped part and a lead-out part that leads downward from the cross-sectional arc-shaped part and comes into contact with the second bearing 130b. A first rib 131a that protrudes substantially forward is formed on the front side (surface side facing the second bearing 130b) of the lead-out portion of the support portion 130ab. A second rib 131b that protrudes substantially downward is formed at the lead-out end of the lead-out portion of the support portion 130ab.

  The second bearing 130b disposed below the first bearing 130a is disposed so as to contact the arcuate section of the support portion 130ab of the first bearing 130a, and has a surface facing the lower blade 8a. The holding portion 130ba having the flat portion and the extending portion 130bb formed in the holding portion 130ba through the slit 6 (heat transfer blocking gap) and having a flat portion are provided. The holding portion 130ba of the second bearing 130b has a concave cross section on the back side, and is configured to engage the first rib 131a of the first bearing 130a. The flat portion of the extension portion 130bb of the second bearing 130b is disposed substantially horizontally, and the rear end portion of the flat portion is joined to the main body 2. Further, in the second bearing 130b, the extension portion 130bb is on the back side of the vertical line H extending downward from the lower end of the surface facing the lower blade 8a in the holding portion 130ba (the right side in FIG. Is disposed at a position offset to the side). Further, the surface extending downward from the slit 16 is formed as a skewed surface (slanted surface), and the skewed surface faces the lower front side. That is, the airflow entering the gap between the drive shaft portion 8ab of the lower blade 8a and the bearing portion 130 flows along the indented surface of the arcuate section of the first bearing 130a and flows into the second bearing 130b. It is comprised so that it may not contact directly.

  In the bearing portion 130, the first rib 131a contacts the holding portion 130ba of the concave section of the second bearing 130b, and the second rib 131b contacts the upper surface of the horizontal extension 130bb of the second bearing 130b. Is configured to do.

  According to the bearing portion 130 configured as described above, the second bearing 130b is configured separately from the first bearing 130a, and the second bearing 130b sandwiches the slit (heat transfer blocking gap) 16. The structure is divided into a holding part 130ba and an extension part 130bb. For this reason, the heat from the rear guider 7 is difficult to be transferred from the first bearing 130a to the main body 2 via the second bearing 130b. Therefore, during the cooling operation, the temperature from the rear guider 7 and the first bearing 130a cooled by the cold air flowing along the rear guider 7 is difficult to be transmitted to the extension 130bb joined to the main body 2 in the second bearing 130b. Further, dew condensation is prevented at the joint portion between the main body 2 and the second bearing 130b constituting the appearance exposed in the room.

  In addition, due to the configuration of the bearing portion 130 configured as described above, the first rib 131a and the second rib 131b partition the holding space 14 communicating with the slit 16 into a small size. As a result, the moisture that has flowed into the holding space 14 through the slit 16 is reliably held by the moisture adsorbent 15 and prevents water from dripping from the joint portion between the main body 2 and the second bearing 130b. Can do.

(Embodiment 4)
The air conditioner of Embodiment 4 has substantially the same configuration as the air conditioner of Embodiment 1 described above in the main configuration. However, the configuration of the air conditioner of the fourth embodiment is different from the air conditioner of the first embodiment in that a dew condensation prevention mechanism is provided between the upper blade and the stabilizer.

  9 to 11 are longitudinal sectional views showing a schematic configuration of the indoor unit during operation of the air conditioner according to Embodiment 4 of the present invention. In the air conditioner of the fourth embodiment, parts having the same functions and operations as those of the first embodiment are given the same numbers. The description is omitted. Further, the basic configuration and operation of the air conditioner of the fourth embodiment are the same as those of the air conditioner of the first embodiment, and therefore, the description of the fourth embodiment is different from the first embodiment. A dew condensation prevention mechanism will be described.

  In the air conditioner according to the fourth embodiment, the up / down wind direction changing blade 80 is a lower blade 8a that is an example of a first blade, and an upper blade that is an example of a second blade provided above the lower blade 8a. 80b. The up / down air direction changing blade 8 controls the blowing direction of the air blown out from the outlet 2c in cooperation with the lower blade 8a and the upper blade 80b. The lower blade 8a is configured to rotate by a predetermined angle by the rotation operation of the lower blade drive shaft. Similarly, the upper blade 80b is configured to rotate by a predetermined angle by the rotation operation of the upper blade drive shaft. The upper blade 80b in the fourth embodiment has the same structure as the lower blade 8a having a cavity inside. Moreover, the upper blade | wing 80b is provided in the downstream end side of the downward guide surface 11a (refer FIG. 9) of the stabilizer 11. As shown in FIG.

[Operation of up and down wind direction change blade]
9 to 11 show an example of the operation of the up / down air direction changing blade 80 during the air-conditioning operation in the air conditioner of the fourth embodiment. The lower blade 8a, which is the first blade forming the main flow, and the second blade It is a longitudinal cross-sectional view which shows rotation operation | movement with the upper blade | wing 80b which is a blade | wing of this. The up-and-down wind direction changing blade 80 is configured such that the upper blade 80b rotates together with the lower blade 8a by the rotation of the drive shaft that drives the lower blade 8a. The up-and-down air direction changing blade 80 in the air conditioner of Embodiment 4 is provided at the outlet 2c at the downstream end (downstream end) of the rear guider 7 and the stabilizer 11, and smoothly blows air blown from the outlet 2c. Can reach a desired area. The lower blade 8a is in a position where the rear guider 7 is extended, and the upper blade 80b is in a position where the stabilizer 11 is extended. The lower blade 8a and the upper blade 80b have a function as a diffuser that exhibits a high rectifying effect on the air from the air outlet 2c.

  In FIG. 9, the blowout surface 8aa of the lower blade 8a that is the first blade is linearly disposed so as to be substantially continuous with the downstream end surface of the guide surface 7a of the rear guider 7. An example is shown. FIG. 9 shows an operation example in which the blowout surface 80ba of the upper blade 80b is linearly arranged so as to be substantially continuous with the surface of the downstream end portion of the guide surface 11a of the stabilizer 11. In the operation example shown in FIG. 9, the air from the blower outlet 2c is blown diagonally downward, and shows the state at the maximum air volume. The up / down wind direction changing blade 80 at this time exhibits the function as a diffuser to the maximum. The blowing surface 8aa of the lower blade 8a is an upward surface in FIG. 9, and the blowing surface 80ba of the upper blade 80b is a downward surface in FIG. Therefore, in the operation example shown in FIG. 9, the blowing surface 8aa of the lower blade 8a and the blowing surface 80ba of the upper blade 80b are surfaces along which the main flow of air blown from the blowout port 2c flows, and function as a diffuser. Demonstrating.

  In FIG. 10, the blowing surface 8 aa of the lower blade 8 a is arranged with an obtuse angle with respect to the downstream end surface of the guide surface 7 a of the rear guider 7, and the blowing surface 80 ba of the upper blade 80 b is disposed on the stabilizer 11. It is the operation example arrange | positioned with an obtuse angle with respect to the surface of the downstream end part in the guide surface 11a. In the operation example shown in FIG. 10, the blowing direction of the air from the blower outlet 2c is a substantially horizontal direction. FIG. 10 shows an operation example during a general cooling operation.

  FIG. 11 shows that the blowing surface 8aa of the lower blade 8a is directed vertically downward from the blowing direction of the guide surface 7a of the rear guider 7, that is, the direction of the extension line G on the outlet side extending along the guide surface 7a. An example of operation is shown. Further, in the operation example of FIG. 11, the blowing surface 80ba of the upper blade 80b is perpendicular to the blowing direction of the guide surface 11a of the stabilizer 11, that is, from the direction of the extension line G on the air outlet side extending along the guide surface 11a. It faces down. Therefore, in the operation example shown in FIG. 11, the blowing direction of the air from the blower outlet 2c is a substantially downward direction. FIG. 11 is an operation example during normal heating operation.

[Condensation prevention mechanism]
In the air conditioner according to Embodiment 4 configured as described above, a dew condensation prevention mechanism is provided between the lower blade 8a and the rear guider 7 between the upper and lower airflow direction changing blades 80 and between the upper blade 80b and the stabilizer 11. It has been. Since both have the same structure, a dew condensation prevention mechanism between the lower blade 8a and the rear guider 7 will be described first.

  FIG. 12 is an enlarged longitudinal sectional view showing a dew condensation prevention mechanism provided between the lower blade 8 a and the rear guider 7. As shown in FIG. 12, at the downstream end of the guide surface 7a of the rear guider 7, a bearing portion 13 disposed with a predetermined gap with respect to the lower blade 8a is continuously provided and fixed. . This bearing part 13 is comprised by the 1st bearing 13a which has the hollow shape whose cross section is circular arc shape, and the 2nd bearing 13b provided in the downward direction of the 1st bearing 13a. A slit (heat transfer blocking gap) 16 is formed between the first bearing 13a and the second bearing 13b. In the configuration of the fourth embodiment, an example in which the first bearing 13a and the second bearing 13b are integrally formed is shown. However, as described in the third embodiment, the first bearing 13a and the second bearing 13b are configured by separate members. Also good.

  The drive shaft portion 8ab, which is a rotating portion serving as an upstream end of the lower blade 8a that is the blade of the up / down airflow direction changing blade 80, has a cross-sectional shape perpendicular to the drive shaft that rotates the lower blade 8a as a center. It has an arcuate appearance. The drive shaft portion 8ab is disposed so as to be housed in the indented surface of the first bearing 13a. That is, the indentation surface of the first bearing 13a and the outer surface of the drive shaft portion 8ab of the lower blade 8a are arranged with a slight predetermined gap so as to face the indentation surface of the first bearing 13a. A drive shaft portion 8ab of the lower blade 8a is provided.

  As described above, the second bearing 13b is provided below the arc-shaped portion of the first bearing 13a, and between the lower end portion of the first bearing 13a and the upper end portion of the second bearing 13b. A slit (heat transfer blocking gap) 16 is formed. That is, the second bearing 13 b is disposed below the first bearing 13 a with the heat transfer blocking gap 16 interposed therebetween. Therefore, it has a configuration in which heat conduction hardly occurs between the first bearing 13a and the second bearing 13b.

  Furthermore, as shown in FIG. 12, the second bearing 13b is on the back side from the vertical line E extending downward from the lower end of the recessed surface in the arcuate section of the first bearing 13a (the right side in FIG. It is disposed at a position offset to the wall side of the machine 1. The facing surface 13ba, which is a surface extending downward from the slit 16 in the bearing portion 13 disposed so as to face the drive shaft portion 8ab that is the rotating portion of the lower blade 8a, is configured as a substantially vertical surface. Therefore, the airflow that has entered the gap 12 between the drive shaft portion 8ab of the lower blade 8a and the bearing portion 13 flows along the indented surface of the arcuate section of the first bearing 13a, and the second bearing 13b. It is the structure which does not contact directly.

  As shown in FIG. 12, in the inner space (holding space) 14 between the first bearing 13a and the second bearing 13b, a moisture adsorbent 15 that is a moisture holding portion, for example, a strange cloth is provided. In the air conditioner of the fourth embodiment, as a dew condensation prevention mechanism provided between the lower blade 8a and the rear guider 7, heat transfer is cut off from the first bearing 13a following the rear guider 7 and the first bearing 13a. The second bearing 13 b disposed via the gap 16 and the moisture adsorbent 15 in the holding space 14 may be included.

  Next, the operation of the dew condensation prevention mechanism configured as described above will be described. During the air conditioning operation (cooling operation) in the air conditioner of Embodiment 4, air from the fan 6 flows along the guide surface 7a of the rear guider 7 arranged on the downstream side of the fan 6. The air that flows along the rear guider 7 is guided to the blowing surface 8aa of the lower blade 8a of the up / down airflow direction changing blade 80 and blown out from the outlet 2c. The flow of the air blown at this time is shown by the white arrow in FIG. As described above, when the air from the fan 6 flows from the rear guider 7 to the blowing surface 8aa of the lower blade 8a, the drive shaft portion 8ab that is a rotating portion of the lower blade 8a and the bearing portion 13 provided in the rear guider 7 A small amount of air (cold air) flows into the gap 12 (shown by a solid line arrow in FIG. 12).

  When the cold air flows into the gap 12 between the drive shaft portion 8ab of the lower blade 8a and the bearing portion 13 as described above, the cold air flows along the hollow surface of the arcuate section of the first bearing 13a, It is discharged to the lower side of the lower blade 8a. The second bearing 13b is disposed at an offset position on the back side from the vertical line E extending downward from the lower end of the arc surface (recessed surface) in the arc-shaped section of the first bearing 13a. For this reason, the cold air flowing along the indented surface of the arcuate section of the first bearing 13a does not substantially directly contact the second bearing 13b, and is below the lower blade 8a. Discharged.

  In the configuration of the fourth embodiment, the slit (heat transfer blocking gap) 16 is formed between the lower end portion of the first bearing 13a and the upper end portion of the second bearing 13b. This is a structure in which heat is not easily transmitted between the bearing 13a and the second bearing 13b. Accordingly, during the cooling operation, the rear guider 7 and the first bearing 13a cooled by the cold air flowing along the rear guider 7 are difficult to cool the second bearing 13b, and the main body 2 constituting the appearance that is exposed indoors. Condensation in the joined second bearing 13b is prevented.

  Furthermore, in the dew condensation prevention mechanism in the air conditioner according to the fourth embodiment, moisture condensed on the upper part of the slit flows into the holding space 14 through the slit 16, and the moisture adsorbent 15 as a moisture holding unit in the holding space 14. Therefore, the moisture is adsorbed and does not drip.

  As described above, the air conditioner of Embodiment 4 according to the present invention has a configuration capable of suppressing the occurrence of condensation during cooling operation, and is guided and sent from the fan 6 to the rear guider 7. Air can be smoothly blown out in a desired direction by the up / down airflow direction changing blades 80, and the air blowing performance is improved and the structure is highly reliable.

  The dew condensation prevention mechanism between the upper blade 80b as the second blade and the stabilizer 11 in the up / down wind direction changing blade 80 is the dew condensation prevention mechanism between the lower blade 8a as the first blade and the rear guider 7 described above. Has basically the same configuration and is vertically symmetric.

  FIG. 13 is an enlarged longitudinal sectional view showing a dew condensation prevention mechanism provided between the upper blade 80 b as the second blade and the stabilizer 11. As shown in FIG. 13, the bearing portion 130 between the upper blade 80 b and the stabilizer 11 has a gap with respect to the upper blade 80 b at the downstream end (downstream end) of the guide surface 11 a of the stabilizer 11. Has been placed. And the bearing part 130 is comprised by the 1st bearing 130a which has a hollow shape whose cross section is circular arc shape, and the 2nd bearing 130b provided in front of the 1st bearing 130a. A slit 16 is formed between the first bearing 130a and the second bearing 130b. Note that the moisture that has flowed into the holding space 14 through the slit 16 may be adsorbed by the moisture adsorbent 15 as a moisture holding portion in the holding space 14.

  The second bearing 130b is disposed at a position offset upward from a horizontal line F extending forward from the front end of the recessed surface in the arcuate section of the first bearing 130a. Further, a facing surface 130ba that is a surface extending forward from the slit 16 in the bearing portion 130 that is disposed so as to face the drive shaft portion 80bb that is a rotating portion of the upper blade 80b is configured in a substantially horizontal plane. As a result, the cold air flowing along the indented surface of the arcuate portion of the cross section of the first bearing 130a does not substantially contact the second bearing 130b substantially, and is forward of the upper blade 80b. Discharged.

  In the air conditioner of the fourth embodiment, the upper blade 80b of the up / down airflow direction changing blade 80 is rotatably provided at the downstream end of the stabilizer 11, but the dew condensation prevention mechanism is provided as described above. The problem of the air flowing along the stabilizer 11 flowing into the gap between the stabilizer 11 and the upper blade 80b and causing condensation near the air outlet by the cold air flowing into the gap during the cooling operation is solved. Yes.

  Moreover, in the air conditioner of Embodiment 4, since the up-and-down air direction change blade | wing 80 comprised by the lower blade | wing 8a and the upper blade | wing 80b exhibits the effect as a diffuser, the significant performance improvement as an air-conditioning apparatus is achieved. ing.

  As described above, the air conditioner according to the fourth embodiment of the present invention can suppress the occurrence of condensation near the air outlet during the cooling operation, improves the reliability, and improves the performance by the effect of the diffuser. It becomes the planned air conditioner.

(Embodiment 5)
Next, the air conditioner of Embodiment 5 according to the present invention has substantially the same configuration as the air conditioner of Embodiment 2 described above in the main configuration. However, the configuration of the air conditioner according to the fifth embodiment is different from the air conditioner according to the second embodiment in that a dew condensation prevention mechanism is provided between the upper blade and the stabilizer.

  The dew condensation prevention mechanism between the upper blade 80b and the stabilizer 11 in the air conditioner of the fifth embodiment is the dew condensation prevention mechanism between the lower blade 8a and the rear guider 7 described in the second embodiment with reference to FIG. It has a substantially similar structure. Further, the upper blade 80b in the fifth embodiment has the same structure as the lower blade 8a having a cavity inside, like the air conditioner of the fourth embodiment (see FIG. 13). 80b is provided at the downstream end of the downward guide surface 11a of the stabilizer 11. Further, in the air conditioner of the fifth embodiment, the blowout surface 8aa of the lower blade 8a is substantially the same as the surface of the downstream end portion of the guide surface 7a of the rear guider 7 as in the air conditioner of the fourth embodiment. Can be arranged linearly so as to be continuous, and can be arranged linearly so that the blowing surface 80ba of the upper blade 80b is substantially continuous with the surface of the downstream end portion of the guide surface 11a of the stabilizer 11. (See FIG. 9).

  The dew condensation prevention mechanism between the upper blade 80b and the stabilizer 11 in the air conditioner of the fifth embodiment is basically the same as the dew condensation prevention mechanism between the lower blade 8a and the rear guider 7 as in the fourth embodiment. It has a configuration and is a vertically symmetrical configuration. Therefore, the air conditioner of the fifth embodiment exhibits the same effects as the air conditioner of the fourth embodiment, together with the effects of the air conditioner of the second embodiment.

  FIG. 14 is an enlarged vertical cross-sectional view showing a dew condensation prevention mechanism provided between the upper blade 80 b as the second blade and the stabilizer 11. In the fifth embodiment, the opposing surface 130bb of the second bearing 130b, which is a surface extending forward from the slit (heat transfer blocking gap) 16, is formed as an inclined surface (an oblique surface). It is comprised so that a surface may face the front lower side. That is, the facing surface 130bb facing the upper surface side of the upper blade 80b is formed so as to be skewed with respect to the horizontal plane (see reference numeral F in FIG. 14). As a result, the cold air flowing along the indented surface of the arcuate portion of the cross section of the first bearing 130a does not substantially contact the second bearing 130b substantially, and is forward of the upper blade 80b. Discharged.

  As described above, the air conditioner according to the fifth embodiment of the present invention has a configuration capable of suppressing the occurrence of condensation during the cooling operation, and the air sent from the fan 6 via the rear guider 7. Can be blown out smoothly in a desired direction by the up-and-down air direction changing blades 80, and the up-and-down air direction changing blades 80 exhibit a function as a diffuser.

  As described above, in the air conditioner of the present invention, a dew condensation prevention mechanism with a simple configuration is provided in the bearing portion on the main body side facing the up / down airflow direction change blades to prevent the occurrence of dew condensation near the air outlet during cooling operation. It becomes a highly reliable air conditioner that can be suppressed. Moreover, in the air conditioner of this invention, a dew condensation prevention mechanism is provided in the blower outlet vicinity, and it becomes an air conditioner with high ventilation performance in which an up-and-down air direction change blade | wing exhibits the effect of a diffuser.

  The dew condensation prevention mechanism in the air conditioner of the present invention is continuously provided at the downstream end of the diffuser, and is disposed so as to face the rotating portion serving as the upstream end of the vane with a predetermined gap, from the diffuser to the main body. It is comprised by the bearing part which suppresses the heat conduction to. The bearing portion is provided with a heat transfer blocking gap (for example, a slit 16), so that heat from the diffuser is not easily transmitted to the main body. In the present invention, the diffuser is disposed downstream of the fan, and is configured to include a rear guider and a stabilizer for guiding the air flow to the outlet, and between the rear guider and the lower blade that is the first blade, and A dew condensation prevention mechanism is provided between the stabilizer and the upper blade that is the second blade.

  In the dew condensation prevention mechanism of the present invention, a moisture adsorbent is used as a mechanism for holding moisture condensed by cold air that has entered the gap between the lower blade and the rear guider and / or the gap between the upper blade and the stabilizer. However, the present invention is not limited to such a configuration. For example, a recess such as a groove is temporarily provided in a part of the region facing the rotating portion of the lower blade. It is good also as a structure holding a water | moisture content.

Note that the air conditioner of the present invention is not limited to the configuration of the first to fifth embodiments described above, and the technology of the present invention shown in the configuration of the first to fifth embodiments. The idea can be implemented in various other modes.
For example, the air conditioners of Embodiments 1 to 5 are air conditioners that combine heating and cooling, but can naturally be applied even to dedicated air conditioners. Moreover, in Embodiment 1 to Embodiment 5, the indoor unit and the outdoor unit are separate separator types, but for an integrated air conditioner in which a compressor, a condenser, an evaporator, and the like are integrated. Is also applicable. Furthermore, in the present invention, the indoor unit is not specified as a wall-mounted type, and even in a floor-standing type or the like, the vertical wind direction changing blades at the air outlets can be modified by the same technical idea. Is possible.

  The air conditioner of the present invention is configured to prevent condensation during cooling operation and to blow out the air from the blowout port so as to reach a desired region, and to the air from the blowout port Since the high rectification effect can be exhibited, it is useful as an air conditioner used for business use and general households.

DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Main body 2a Front opening part 2b Upper surface opening part 2c Outlet 3 Front panel 4 Filter 5 Heat exchanger 6 Fan 7 Rear guider 8 Up-and-down air direction change blade 8a Lower blade (1st blade)
8b Upper blade (second blade)
8c guide mini blade (third blade)
9 Left and right wind direction changing blade 10 Ventilation path 11 Stabilizer 12 Clearance 13 Bearing portion 14 Inner space (holding space)
15 Moisture retention part (moisture adsorbent)
16 Heat transfer blocking gap (slit)

Claims (8)

Intake air (2a, 2b) and have a outlet (2c), a body (2) the back side is attached to the wall,
A heat exchanger (5) for exchanging heat from the air taken from the intake ports (2a, 2b) ;
A fan (6) for generating an air flow for exchanging heat in the heat exchanger (5) and blowing out from the outlet (2c) formed below the main body (2) ;
A diffuser (7, 11) that is arranged downstream of the fan (6) to guide the air flow to the outlet (2c) and gradually expands the cross-sectional area of the flow path;
Up and down wind direction change blades that are rotatably provided at the outlet (2c) downstream of the diffuser (7, 11) and that control the air flowing along the diffuser (7, 11) in the up and down direction. (8,80) and
Provided continuously to the downstream end of the diffuser (7, 11), a predetermined gap with respect to become the driving shaft portion upstream rotational center portion of the (8ab, 80Bb) of the vertical wind direction changing blade (8, 80) (12) having bearing portions (13, 130) arranged to face each other,
The diffuser (7, 11) includes a rear guider (7) that is arranged downstream of the fan (6) and guides the air flow to the outlet (2c) through a rear guide surface (7a),
The up-and-down air direction changing blades (8, 80) are rotatably provided downstream of the rear guider (7), and control the flow direction of the air flowing along the guide surface (7a) of the rear guider (7). Including the first blade (8a)
A bearing portion (13) facing the drive shaft portion (8ab) of the first blade (8a) has a first bearing (13a) joined continuously to the downstream end of the rear guider (7), and A second bearing (13b) joined to the body,
Between the first bearing (13a) and the second bearing (13b ) , a heat transfer blocking gap (16) for suppressing heat conduction from the rear guider (7) to the main body (2 ) is provided,
The first bearing (13a) has a recessed surface that is recessed forward, facing the drive shaft portion (8ab) having an arc surface on the upstream end side of the first blade (8a),
The second bearing (13b) is disposed at a position offset to the back side from a vertical line extending downward from the lower end of the recessed surface of the first bearing (13a),
The air flowing along the rear guider (7) causes a predetermined gap between the arc surface of the drive shaft portion (8ab) of the first blade (8a) and the recessed surface of the first bearing (13a). The air conditioner is configured to be guided by the arc surface and the indented surface, flow in an arc shape, and be discharged to the lower side of the first blade (8a) . In the second bearing (13b) facing the drive shaft portion (8ab) of the first blade (8a), a facing surface (13ba) extending downward from the heat transfer blocking gap (16) is a vertical surface. The air conditioner of Claim 1 comprised by these . In the second bearing (13b) facing the drive shaft portion (8ab) of the first blade (8a), a facing surface (13ba) extending downward from the heat transfer blocking gap (16) 2. The air conditioner according to claim 1, wherein the air conditioner is composed of a slanting surface that faces the lower front side away from the vertical line as it goes downward in the vertical line extending downward from the lower end of the recessed surface of the bearing (1 a). . The first blade (8a) flows into a predetermined gap between the drive shaft (8ab) and the first bearing (13a) facing the first shaft (8a), and is discharged to the lower side of the first blade (8a). The air conditioner according to any one of claims 1 to 3, wherein a moisture holding portion (15) for adsorbing moisture in the air is provided in the bearing portion (13) . The diffuser (7, 11) includes a stabilizer (11) arranged to face the rear guider (7) and guides the air flow to the outlet (2c) by a front guide surface (11a) ,
The up-and-down air direction changing blades (8, 80) are rotatably provided downstream of the stabilizer (11), and change the direction of the air flow flowing along the guide surface (11a) of the stabilizer (11). Including a second vane (80b) to control,
A bearing portion (130) facing the drive shaft portion (80bb) of the second blade (80b) has a third bearing (130a) joined continuously to the downstream end of the stabilizer (11), and A fourth bearing (130b) joined to the body (2),
Between the third bearing (130a) and the fourth bearing (130b), a heat transfer blocking gap (16) for suppressing heat conduction from the stabilizer (11) to the main body (2) is provided,
The third bearing (130a) has a recessed surface with a recessed bottom facing the drive shaft portion (80bb) having an arc surface on the upstream end side of the second blade (80b),
The fourth bearing (130b) is disposed at a position offset upward from a horizontal line extending forward from the front end of the recessed surface of the third bearing (130a),
The air flowing along the stabilizer passes through the predetermined gap between the arc surface of the drive shaft portion (80bb) of the second blade (80b) and the recessed surface of the third bearing (130a). 2. The air conditioner according to claim 1, wherein the air conditioner is configured to be guided by an arc surface and the recessed surface to flow in an arc shape and to be discharged to the front of the second blade (80 b) . In the fourth bearing (130b) facing the drive shaft portion (80bb) of the second blade (80b), a facing surface (130ba) extending downward from the heat transfer blocking gap (16) is a horizontal plane. The air conditioner according to claim 5, which is configured . In the fourth bearing (130b) facing the drive shaft portion (80bb) of the second blade (80b), a facing surface (130ba) extending downward from the heat transfer blocking gap (16) has the first bearing. 6. The air conditioner according to claim 5 , wherein a front side of a horizontal line extending forward from a front end of the recessed surface of the bearing (130 a) of the third bearing is a slanting surface facing a lower front side away from the horizontal line . The second blade (80b) flows into a predetermined gap between the drive shaft (80bb) and the third bearing (130a) facing the second blade (80b), and is discharged to the upper side of the second blade (80b). The air conditioner according to any one of claims 5 to 7, wherein a moisture holding portion (15) that adsorbs moisture of air is provided in the bearing portion (130) .

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