WO2014174625A1

WO2014174625A1 - Air conditioner

Info

Publication number: WO2014174625A1
Application number: PCT/JP2013/062134
Authority: WO
Inventors: 惇司河野; 池田　尚史; 昌彦高木; 栗原　誠
Original assignee: 三菱電機株式会社
Priority date: 2013-04-24
Filing date: 2013-04-24
Publication date: 2014-10-30
Also published as: JP6139669B2; CN203869173U; JPWO2014174625A1

Abstract

An air conditioner is provided with: a polygonal body which is open at the bottom; a polygonal decorative panel (6) which is provided at the opening of the body and in which one or more discharge openings are formed; and a turbofan (1) and a heat exchanger (3), which are contained in the body. The air conditioner is characterized in that the turbofan (1) delivers air toward panel discharge openings (9) located on the outside of the heat exchanger (3) installed around the turbofan (1), in that the panel discharge openings (9) of the decorative panel (6) are formed along at least one side of the polygon except at the corners (19) thereof, and in that air current deflection means (18) which deflect the direction of air currents to the turbofan (1) side are formed on discharge opening corner side-walls (12), the air currents flowing from the corners (19) toward the panel discharge openings (9).

Description

Air conditioner

The present invention relates to an air conditioner in which a main body is installed behind the ceiling of an air conditioned room.

As a conventional ceiling-embedded air conditioner, for example, there is one disclosed in Patent Document 1. The air conditioner described in Patent Literature 1 includes a partition portion that rises in the air blowing direction in the vicinity of the side wall portion of the main body outlet, and a second partition portion that is continuous with the partition portion and forms an air passage. . Thus, an air conditioner has been proposed in which the airflow from the side wall of the air outlet is guided to the air outlet so as not to become a resistance (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2005-069586 (Summary, FIG. 8)

The conventional ceiling-embedded air conditioner has a problem that when the air that has passed through the heat exchanger flows into the air outlet, the airflow is easily separated at the inlet of the air outlet.
In particular, when the air outlet is formed except for the corner portion of the main body, the portion where the airflow from the air channel wall side inside the main body of the air outlet and the airflow from the side wall side on the corner side of the air outlet merge. Then, there existed a subject that peeling of an air current became large. That is, there is a problem that air flow separation becomes large on the air channel wall side inside the main body near the end portion in the longitudinal direction of the air outlet. When such an air flow separation occurs, there is a problem that the airflow resistance of the air passing through the outlet increases.

In addition, there is a problem that the indoor air is involved because the wind speed is low on the downstream side of the separation region. When the entrainment of room air occurs during the cooling operation, there is a problem that moisture in the air tends to condense at the outlet.

In the air conditioner disclosed in Patent Document 1, the partition portion can suppress an increase in ventilation resistance due to the airflow from the side wall side on the corner side of the outlet. However, the opening area of the outlet is narrowed by the second partition portion. For this reason, there existed a subject that the ventilation resistance of a blower outlet increased, the air volume fell, and the noise increased.

The present invention has been made to solve at least one of the above-described problems, and an object of the present invention is to provide an air conditioner that can suppress the separation of the airflow at the outlet. Moreover, it aims at providing the air conditioner which can suppress the increase in the ventilation resistance in a blower outlet. Moreover, it aims at providing the air conditioner which can suppress the fall of an air volume. Moreover, it aims at providing the air conditioner which can suppress the increase in noise. Moreover, it aims at providing the air conditioner which can suppress the entrainment of the indoor air in a suction inlet.

An air conditioner according to the present invention includes a polygonal main body having an opening on a lower surface, a polygonal panel provided in the opening of the main body and having one or a plurality of air outlets, and the main body. A blower and a heat exchanger housed therein, and the blower blows wind toward the blowout port located outside the heat exchanger installed around the blower, and the blower of the panel The outlet is formed along at least one side of the polygon except for a corner portion of the polygon, and an airflow directed from the corner portion to the outlet port is formed on a side wall on the corner portion side of the outlet port. Wind direction deflecting means for deflecting the direction toward the blower is formed.

The present invention can suppress separation of the airflow at the outlet. Moreover, this invention can suppress the increase in the ventilation resistance in a blower outlet. Further, the present invention can suppress a decrease in the air volume. The present invention can also suppress an increase in noise. Moreover, this invention can suppress the entrainment of the room air in a suction inlet, and can prevent the dew condensation which generate | occur | produces in a blower outlet at the time of air_conditionaing | cooling operation.

It is a schematic diagram which shows the internal structure of the air conditioner which concerns on Embodiment 1 of this invention from the side. It is the top view which showed the mode of the airflow of the corner part of the air conditioner which concerns on Embodiment 1 of this invention. It is the perspective view which showed the shape of the side wall of the blower outlet which concerns on Embodiment 1 of this invention. It is sectional drawing perpendicular | vertical to the longitudinal direction of the blower outlet which concerns on Embodiment 1 of this invention. It is the perspective view which showed the shape of the side wall of the blower outlet which concerns on Embodiment 2 of this invention. It is the perspective view which showed the shape of the side wall of the blower outlet which concerns on Embodiment 3 of this invention. It is the perspective view which showed the shape of the side wall of the blower outlet which concerns on Embodiment 4 of this invention. It is the perspective view which showed the shape of the side wall of the blower outlet which concerns on Embodiment 5 of this invention.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of an air conditioner according to the present invention will be described with reference to the drawings.
In the drawings, the same reference numerals indicate the same or corresponding parts.

Embodiment 1 FIG.
FIG. 1 is a schematic diagram showing the internal structure of the air conditioner according to Embodiment 1 of the present invention from the side.
The air conditioner according to Embodiment 1 is a so-called packaged air conditioner indoor unit.
In FIG. 1, the main part of the main body of the air conditioner is embedded in the back of the ceiling of the room, and the lower part of the main body faces the room 17 in the room.

The air conditioner that is embedded in the ceiling includes a turbo fan 1, a heat exchanger 3, and at least one panel outlet 9.

The main body is embedded on the back side (opposite side of the room) of the ceiling surface 15 of the room that is the target space.
As an example, in the first embodiment, the main body includes a main body top plate 5 having a rectangular shape in plan view, and four main body side plates 4 extending downward from four sides of the main body top plate 5. In other words, the main body is a box body in which the upper end surface of the rectangular tube body including the four main body side plates 4 is closed by the main body top plate 5.
The shape of the main body is not limited to a rectangle. The shape of the main body may be an arbitrary polygon.

A decorative panel 6 is detachably attached to the main body at a lower portion of the main body, that is, at an open lower end surface of the box.
As shown in FIG. 1, the main body top plate 5 is located above the ceiling surface 15. The decorative panel 6 is located almost on the same plane as the ceiling surface 15.

In the vicinity of the center of the decorative panel 6, a suction grill 7, which is a suction port for air to the main body, is provided.
The suction grill 7 is provided with a filter 8 for removing dust after passing through the suction grill 7.
As an example, in the first embodiment, the decorative panel 6 and the suction grille 7 each have a rectangular outer edge in plan view.

In a region between the outer edge of the decorative panel 6 and the outer edge of the suction grill 7, a plurality of panel outlets 9 that are air outlets are provided.
In the first embodiment, each of the decorative panel 6 and the suction grille 7 has four outer edges, and four panel outlets 9 are provided. Each of the panel outlets 9 is disposed along the corresponding side of the decorative panel 6 and the suction grille 7. Moreover, each of the panel blower outlets 9 is formed except the corner | angular part 19 (refer FIG. 2) of the decorative panel 6. FIG.
Moreover, the panel blower outlet 9 is located so that the suction grille 7 may be enclosed.
Each of the panel outlets 9 is provided with a wind direction vane 13 that adjusts the direction of air to be blown out.

In addition, although this Embodiment 1 demonstrates the case where four panel blower outlets 9 are provided, this invention is not limited to this. What is necessary is just to form along at least 1 side among the sides of the decorative panel 6. That is, the blower outlet is formed along at least one side of the polygon except for the corner 19 in the polygon of the decorative panel 6.

A fan motor 2 is disposed at the center of the body. The fan motor 2 is supported on the lower surface (the inner space side of the main body) of the main body top plate 5.
A turbo fan 1 is attached to a rotating shaft extending downward in the fan motor 2. The turbofan 1 sucks air into the main body from the suction grill 7 and causes the air to flow out from the panel outlet 9 located outside the heat exchanger 3 to the room 17 that is the target space.
A bell mouth 14 is provided between the turbo fan 1 and the suction grill 7 to form a suction air passage from the suction grill 7 toward the turbo fan 1.

A heat exchanger 3 is disposed on the radially outer side of the turbofan 1.
In other words, the heat exchanger 3 is arranged in a flow path of air generated in the main body by the turbofan 1 and performs heat exchange between the air and the refrigerant. For example, as shown in FIG. 1, the heat exchanger 3 is installed around the turbofan 1.
Further, the heat exchanger 3 has at least one corner portion 16 (see FIG. 2) at a portion where the panel outlet 9 faces the adjacent corner portion 19.

The heat exchanger 3 has a plurality of fins arranged at a predetermined interval, and a heat transfer tube penetrating the plurality of fins. The heat transfer tube is connected to an outdoor unit (not shown) through a connection pipe. A cooled refrigerant or a heated refrigerant circulates inside the heat transfer tube. Thereby, the heat exchanger 3 exchanges heat between the cooled refrigerant or the heated refrigerant and the air sucked into the main body.

In addition, the structure and aspect of the turbo fan 1, the bell mouth 14, and the heat exchanger 3 are not limited to the above. In the first embodiment, a well-known one is used.

The turbofan 1 corresponds to a “blower” in the present invention.
The main body side plate 4 and the main body top plate 5 constitute a “main body” in the present invention.
The decorative panel 6 corresponds to a “panel” in the present invention.
The panel outlet 9 corresponds to the “air outlet” in the present invention.

In such a configuration, when the turbo fan 1 rotates, the air in the room 17 is sucked into the suction grill 7 of the decorative panel 6.
The air removed by the filter 8 is guided by the bell mouth 14 constituting the main body suction port and sucked into the turbofan 1.
Furthermore, in the turbofan 1, the air sucked upward from below is blown out in the horizontal direction and from the inside to the outside in the radial direction.
The air thus blown out exchanges heat with the refrigerant when passing through the heat exchanger 3, and at least one of temperature and humidity is adjusted. And the air which passed the heat exchanger 3 changes a flow direction below by the main body side board 4, and is blown off from each of the panel blower outlets 9 to the room | chamber interior 17. FIG.

In addition, in this Embodiment 1, although the suction grill 7 is provided in the decorative panel 6 and the structure which sucks indoor air in a main body is demonstrated, this invention is not limited to this. For example, a configuration may be adopted in which a suction port is provided in the ceiling surface 15 at a position away from the main body and communicates with an opening formed in the main body top plate 5.

Next, details of the panel outlet 9 will be described with reference to FIGS.

FIG. 2 is a top view showing a state of airflow at the corner portion of the air conditioner according to Embodiment 1 of the present invention.
FIG. 3 is a perspective view showing the shape of the side wall of the air outlet according to Embodiment 1 of the present invention.
FIG. 4 is a cross-sectional view perpendicular to the longitudinal direction of the air outlet according to Embodiment 1 of the present invention.
As shown in FIGS. 2 to 4, the panel outlets 9 each have an inner side of the main body (a central side of the main body) defined by an outlet inner air passage wall 10. In the panel outlet 9, the outer edge side (outside of the main body) of the decorative panel 6 is defined by the outlet outer air passage wall 11. In the panel outlet 9, both ends of the outlet inner air passage wall 10 and the outlet outer air passage wall 11 are connected by the outlet corner portion side walls 12.

Note that the air outlet wall 10 on the air outlet side corresponds to “the air passage wall on the blower side of the air outlet” in the present invention.
The outlet corner side wall 12 corresponds to the “side wall on the corner side of the outlet” in the present invention.

As shown in FIG. 2, the airflow that has passed through the straight portion of the heat exchanger 3 flows into the panel air outlet 9 from the air outlet inner air passage wall 10 side.
The airflow that has passed through the corner portion 16 of the heat exchanger 3 flows into the panel outlet 9 from the outlet corner portion side wall 12 side of the panel outlet 9 adjacent to the corner portion 16.
That is, in the vicinity of the end of the panel outlet 9 in the longitudinal direction, the airflow from the outlet inner air passage wall 10 and the airflow from the outlet corner portion side wall 12 merge.

As shown in FIGS. 2 to 4, the airflow direction from the corner 19 side to the panel outlet 9 is directed to the turbo fan 1 side (inner direction of the main body) on the outlet corner corner side wall 12 of the panel outlet 9. A wind direction deflecting means 18 for deflecting is formed.
For example, as shown in FIGS. 3 and 4, the wind direction deflecting means 18 is formed at the upper end of the outlet corner portion side wall 12, and is configured with an inclined surface whose height decreases toward the turbo fan 1 side (inside the main body). Yes.
That is, the wind direction deflecting means 18 is a flat surface in which the height of the blower outlet corner portion side wall 12 is inclined lower toward the blower outlet inner wind passage wall 10 side.
The configuration of the wind direction deflecting unit 18 is not limited to this. As another example, for example, an arcuate wind direction guide may be installed on the upper surface of the outlet corner portion side wall 12.

With the configuration as described above, the airflow that flows through the corner portion 16 of the heat exchanger 3 and flows into the panel air outlet 9 from the air outlet corner side wall 12 side is deflected toward the turbo fan 1 side (inward direction of the main body). .
Therefore, the airflow flowing into the panel air outlet 9 from the air outlet corner side wall 12 side is deflected to the turbo fan 1 side (inner direction of the main body) and merged with the air current flowing in from the air outlet inner air passage wall 10 side. Thus, the airflow easily adheres to the air outlet wall 10 on the air outlet, and the separation can be suppressed.
Moreover, since the ventilation resistance of the panel blower outlet 9 falls by reducing a peeling area, a pressure loss can be reduced. Moreover, the fall of an air volume can be suppressed and the increase in noise can be suppressed.
Moreover, the air volume at the air outlet wall 10 side of the airflow vane 13 can be increased, and for example, dew condensation due to entrainment of room air during cooling operation can be prevented.
As described above, according to the first embodiment, it is possible to prevent condensation due to entrainment of indoor air, reduce pressure loss due to separation of airflow, improve energy saving, and reduce noise. It becomes possible.

Embodiment 2. FIG.
FIG. 5 is a perspective view showing the shape of the side wall of the air outlet according to Embodiment 2 of the present invention.
Note that the air conditioner of the second embodiment is different from the first embodiment only in the configuration of the wind direction deflecting means 18 of the panel outlet 9, and the other configurations are the same as those of the first embodiment.

As shown in FIG. 5, the wind direction deflecting means 18 is formed at an upper end of the outlet corner portion side wall 12, and is configured by an inclined surface whose height decreases toward the turbo fan 1 side (inside the main body).
Further, the wind direction deflecting means 18 is formed such that the end portion on the turbo fan 1 side (inside the main body) is lower than the upper end of the air outlet wall 10 on the air outlet side. That is, the inclined surface is formed such that the height L1 of the connecting portion with the blower outlet inner wind passage wall 10 is lower than the height L2 of the blower outlet inner wind passage wall 10.

Also in the air conditioner according to the second embodiment configured as described above, the same effect as in the first embodiment can be obtained.
In addition, in the second embodiment, the wind direction deflecting means 18 is formed such that the end portion on the turbo fan 1 side (the inside of the main body) has a lower height than the upper end of the air outlet wall 10.
For this reason, the airflow which flows into the panel blower outlet 9 from the blower outlet corner | angular part side wall 12 side can be increased. Furthermore, since the airflow toward the blower outlet inner wind passage wall 10 side increases, separation of the airflow flowing into the panel blower outlet 9 from the blower outlet inner wind passage wall 10 side can be suppressed.
Further, even if separation occurs in the airflow flowing from the blower outlet inner air passage wall 10 side to the panel blower outlet 9, the airflow from the blower outlet corner side wall 12 side flows into this separation region, so that separation can be suppressed.
This also reduces pressure loss due to airflow separation, improves energy savings, and reduces noise.

Embodiment 3 FIG.
FIG. 6 is a perspective view showing the shape of the side wall of the air outlet according to Embodiment 3 of the present invention.
The air conditioner of the third embodiment is different from the first embodiment only in the configuration of the wind direction deflecting means 18 of the panel outlet 9, and the other configuration is the same as that of the first embodiment.

As shown in FIG. 6, the wind direction deflecting means 18 is formed at an upper end of the outlet corner portion side wall 12, and is configured with an inclined surface whose height decreases toward the turbo fan 1 side (inside the main body).
Further, the wind direction deflecting means 18 is formed such that the end portion on the turbo fan 1 side (inside the main body) is higher than the upper end of the blower outlet inner wind passage wall 10. That is, the inclined surface is formed such that the height L1 of the connecting portion with the blower outlet inner wind passage wall 10 is higher than the height L2 of the blower outlet inner wind passage wall 10.

Also in the air conditioner according to the third embodiment configured as described above, the same effect as in the first embodiment can be obtained.
In addition, in the third embodiment, the inclined surface constituting the wind direction deflecting means 18 is such that the height of the end portion on the turbo fan 1 side (the inside of the main body) is higher than the upper end of the blower outlet inner air passage wall 10. Is formed.
For this reason, even if separation occurs in the airflow flowing from the blower outlet corner side wall 12 side to the panel blower outlet 9, since the airflow from the blower outlet inner air passage wall 10 side flows into this separation region, the separation region is reduced. Can be made.
This also reduces pressure loss due to airflow separation, improves energy savings, and reduces noise.

Embodiment 4 FIG.
FIG. 7 is a perspective view showing the shape of the side wall of the air outlet according to the fourth embodiment of the present invention.
The air conditioner of the fourth embodiment is different from the first embodiment only in the configuration of the wind direction deflecting means 18 of the panel outlet 9, and the other configurations are the same as those of the first embodiment.

The wind direction deflecting means 18 of the fourth embodiment is formed at the upper end of the blower outlet corner portion side wall 12, and the height becomes lower toward the turbo fan 1 side (inside the main body) and the closer to the panel blower outlet 9 side. It consists of an inclined surface with a low height.
For example, as shown in FIG. 7, the wind direction deflecting means 18 is configured by a plurality of planes whose inclination angles increase toward the panel outlet 9 side. That is, the inclined surface is formed such that the height of the upper end of the outlet corner portion side wall 12 is gradually lowered toward the panel outlet 9.

Also in the air conditioner according to the fourth embodiment configured as described above, the same effect as in the first embodiment can be obtained.
In addition, in the fourth embodiment, the wind direction deflecting means 18 is constituted by a plurality of planes whose inclination angles increase toward the panel outlet 9 side.
For this reason, the direction of the airflow which flows into the panel blower outlet 9 from the blower outlet corner side wall 12 side can be brought close to the vertical direction from the horizontal direction. Therefore, it is possible to suppress separation of the air flow on the outlet corner portion side wall 12.
This also reduces pressure loss due to airflow separation, improves energy savings, and reduces noise.

The configuration of the wind direction deflecting unit 18 of the fourth embodiment may be combined with the configuration of the wind direction deflecting unit 18 of the second or third embodiment.

Embodiment 5 FIG.
FIG. 8 is a perspective view showing the shape of the side wall of the air outlet according to the fifth embodiment of the present invention.
Note that the air conditioner of the fifth embodiment is different from the first embodiment only in the configuration of the wind direction deflecting means 18 of the panel outlet 9, and the other configurations are the same as those of the first embodiment.

The wind direction deflecting means 18 of the fifth embodiment is formed at the upper end of the blower outlet corner portion side wall 12 and has a height that is lower toward the turbo fan 1 side (inside the main body) and is closer to the panel blower outlet 9 side. It consists of an inclined surface with a low height.
For example, as shown in FIG. 8, in the cross section perpendicular to the blower outlet corner side wall 12, the wind direction deflecting unit 18 of the fifth embodiment has a gap between the blower outlet corner side wall 12 and the upper end of the blower corner corner side wall 12. It is constituted by a curved surface.
That is, the inclined surface is formed so that the upper end of the outlet corner portion side wall 12 has a curved surface shape in a cross section perpendicular to the outlet corner portion side wall 12.

Also in the air conditioner according to the fifth embodiment configured as described above, the same effect as in the first embodiment can be obtained.
In addition, in the fifth embodiment, the wind direction deflecting means 18 is a curved surface that is curved between the air outlet corner portion side wall 12 and the upper end of the air outlet corner portion side wall 12 in a cross section perpendicular to the air outlet corner portion side wall 12. It is constituted by.
For this reason, the direction of the airflow which flows into the panel blower outlet 9 from the blower outlet corner side wall 12 side can be smoothly changed from the horizontal direction to the vertical direction. Therefore, it is possible to suppress separation of the air flow on the outlet corner portion side wall 12.
This also reduces pressure loss due to airflow separation, improves energy savings, and reduces noise.

Note that the configuration of the wind direction deflecting unit 18 of the fifth embodiment may be combined with the configuration of the wind direction deflecting unit 18 of the second or third embodiment.

As an application example of the present invention, the present invention can be widely used for indoor units constituting a refrigeration cycle apparatus, for example, indoor units of air conditioners, and other various devices and facilities where a blower is installed.

1 turbo fan, 2 fan motor, 3 heat exchanger, 4 main body side plate, 5 main body top plate, 6 decorative panel, 7 suction grille, 8 filter, 9 panel air outlet, 10 air outlet inner air passage wall, 11 air outlet outer Air channel wall, 12 outlet corner side wall, 13 wind direction vane, 14 bell mouth, 15 ceiling surface, 16 corner part, 17 room, 18 wind direction deflecting means, 19 corner part.

Claims

A polygonal body having an opening on the lower surface;
A polygonal panel provided in the opening of the main body and formed with one or more outlets;
A blower and a heat exchanger housed in the main body,
With
The blower blows wind toward the outlet located outside the heat exchanger installed around the blower,
The outlet of the panel is formed along at least one side of the polygon, except for corners in the polygon.
An air conditioner characterized in that wind direction deflecting means for deflecting a direction of an air flow from the corner portion toward the blower outlet toward the blower side is formed on a side wall on the corner portion side of the blower outlet.
The wind direction deflecting means is
2. The air conditioner according to claim 1, wherein the air conditioner is an inclined surface that is formed at an upper end of a side wall on the corner portion side of the air outlet and has a height that decreases toward the blower side.
The wind direction deflecting means is
The air conditioner according to claim 2, wherein a height of an end portion on the blower side is lower than an upper end of an air passage wall on the blower side of the blower outlet.
The wind direction deflecting means is
The air conditioner according to claim 2, wherein a height of an end portion on the blower side is higher than an upper end of an air passage wall on the blower side of the blower outlet.
The wind direction deflecting means is
It is formed in the upper end of the side wall at the said corner | angular part side of the said blower outlet, The height is low as it goes to the said blower side, And it is an inclined surface with low height as it goes to the said blower outlet side, Item 5. The air conditioner according to any one of Items 1 to 4.
The wind direction deflecting means is
The air conditioner according to claim 5, wherein the air conditioner is configured by a plurality of planes whose inclination angles increase toward the air outlet side.
The wind direction deflecting means is
The cross section perpendicular to the side wall on the corner portion side of the air outlet is configured by a curved surface between the side wall on the corner portion side of the air outlet and the upper end of the side wall. Air conditioner as described in.