WO2015040668A1

WO2015040668A1 - Air conditioner

Info

Publication number: WO2015040668A1
Application number: PCT/JP2013/075016
Authority: WO
Inventors: 惇司河野; 池田　尚史; 昌彦高木; 栗原　誠; 健裕田中
Original assignee: 三菱電機株式会社
Priority date: 2013-09-17
Filing date: 2013-09-17
Publication date: 2015-03-26
Also published as: CN104755847A; US20150276246A1; CN204176753U; JP6008993B2; EP3048375B1; CN104755847B; EP3048375A4; EP3048375A1; JPWO2015040668A1

Abstract

An air conditioner is provided with: a body (20) having, at the lower part thereof, at least one suction opening and at least one discharge opening (9); and a heat exchanger (3) housed within the body and disposed in the path of flow of air sucked into the body from the suction opening and discharged from the discharge opening into a space into which the air is to be discharged. The discharge opening is located between a heat exchanger outlet-side air path wall (10) and an opposed-side air path wall (11) which faces the heat exchanger outlet-side air path wall. The thickness (L1) of the heat exchanger outlet-side air path wall is in the range of 0.15L2 to 0.25L2, where L2 is the inlet width of the discharge opening.

Description

Air conditioner

The present invention relates to an air conditioner.

As a conventional ceiling-embedded air conditioner, for example, there is one disclosed in Patent Document 1. In this air conditioner, the airflow direction adjusting member whose bottom surface is flattened is disposed at the air outlet, and a convex curved surface is formed at the air blower side upper end of the air passage wall defining the air outlet channel upstream of the air outlet. Has been.

JP 2012-251676 A (FIG. 1)

However, the conventional ceiling-embedded air conditioner has a problem that the air volume is insufficient or noise is generated due to the presence of ventilation resistance at the air outlet. For example, as one factor, when the air that has passed through the heat exchanger flows into the air outlet, there is separation of the airflow generated at the inlet portion of the air outlet. That is, when peeling occurs, the ventilation resistance increases, so that the air volume decreases and the noise increases.

In addition, regarding such a problem, the air conditioner disclosed in Patent Document 1 described above merely devise the shape of the air passage wall, and does not consider securing the air volume and reducing noise.

The present invention has been made in view of the above, and an object of the present invention is to provide an air conditioner capable of suppressing an increase in ventilation resistance and ensuring a sufficient air volume and reducing noise.

In order to achieve the above-described object, an air conditioner according to the present invention includes a main body having at least one suction port and at least one air outlet at a lower portion, the main body housed in the main body, and from the suction port into the main body. A heat exchanger disposed in a flow path of air that is sucked into the target space and blown out from the blowout port to the target space, and the blowout port includes a heat exchanger outlet side air passage wall, and the heat exchanger outlet The thickness L1 of the heat exchanger outlet side air passage wall is between 0.15L2 and .0... When the inlet width of the outlet is L2. 25L2.
A curved surface portion formed of a curved surface convex toward the air passage side is formed at a portion on the air outlet side at the upper end of the heat exchanger outlet side air passage wall, and the thickness direction range L3 of the curved surface portion is formed. May be configured to be 0.4 L1 or more.
The upper end of the heat exchanger outlet side air passage wall has a curved surface portion and a flat surface portion, and the curved surface portion is formed of a curved surface that is convex toward the air passage side, and the heat exchanger The upper end of the outlet side air passage wall is located on the side closer to the central portion of the outlet, and the flat portion is at the upper end of the heat exchanger outlet side air passage wall than the curved surface portion. You may comprise so that it may be located in the near side.
The heat exchanger outlet side air passage wall has a curved surface portion and a flat surface portion, and the curved surface portion is formed of a curved surface that is convex toward the air passage side, and the heat exchanger outlet side It is located at the upper end of the air passage wall, and the flat surface portion is located closer to the central portion of the air outlet than the curved surface portion, and the opposed air passage on the heat exchanger outlet air passage wall You may comprise so that it may be located in the most upstream side part of the area | region facing a wall.
The curved surface portions located at both ends in the longitudinal direction of the heat exchanger outlet side air passage wall are larger than the curved portion located at the center portion in the longitudinal direction of the heat exchanger outlet side air passage wall. You may comprise.
The heat exchanger outlet side air passage wall has a step, and the step is located in a region of the heat exchanger outlet side air passage wall facing the opposite air passage wall, and the heat exchanger The region below the step in the exchanger outlet side air passage wall is recessed to the side away from the opposing air passage wall.
You may comprise as follows.
The distance L5 between the heat exchanger outlet side air passage wall and the heat exchanger may be configured to be smaller than the thickness L1 of the heat exchanger outlet side air passage wall.
The thickness L1 ′ of both ends in the longitudinal direction of the heat exchanger outlet side air passage wall is configured to be larger than the thickness L1 of the center portion in the longitudinal direction of the heat exchanger outlet side air passage wall. Also good.

According to the present invention, it is possible to suppress an increase in ventilation resistance, secure a sufficient air volume and reduce noise.

It is the figure which showed the internal structure of the air conditioner which concerns on Embodiment 1 of this invention from the side. It is the figure which showed the blower outlet of the air conditioner which concerns on this Embodiment 1 from the side. It is a characteristic view which shows the change of the airflow with respect to L1 / L2 regarding the air conditioner which concerns on this Embodiment 1. FIG. It is a figure of the same aspect as FIG. 2 regarding Embodiment 2 of this invention. It is a characteristic view which shows the change of the airflow with respect to L3 / L1 regarding the air conditioner which concerns on this Embodiment 2. FIG. It is a figure of the same aspect as FIG. 2 regarding Embodiment 3 of this invention. It is a figure of the same aspect as FIG. 2 regarding Embodiment 4 of this invention. It is a figure of the same aspect as FIG. 2 regarding Embodiment 5 of this invention. It is a figure of the same aspect as FIG. 2 regarding Embodiment 6 of this invention. It is a figure which shows the blower outlet of the air conditioner which concerns on Embodiment 7 of this invention from upper direction.

Hereinafter, embodiments of an air conditioner according to the present invention will be described with reference to the accompanying 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. More specifically, the air conditioner according to Embodiment 1 is a so-called indoor unit of a packaged air conditioner. FIG. 1 shows that the main part of the air conditioner body is embedded in the ceiling of the room and the lower part of the body is the room The state facing the interior of the room is shown.

The air conditioner that is a ceiling-embedded type includes a main body 20 and a heat exchanger 3. The main body 20 of the air conditioner 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 20 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 20 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 decorative panel 6 is detachably attached to the main body at the lower part of the main body, that is, at the open lower end surface of the box. As shown in FIG. 1, the main body top plate 5 is positioned above the ceiling surface 15, and the decorative panel 6 is positioned substantially on the same plane as the ceiling surface 15.

The main body 20 of the air conditioner has at least one inlet and at least one outlet 9. 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. A filter 8 that removes dust after passing through the suction grill 7 is provided inside 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 the region between the outer edge of the decorative panel 6 and the outer edge of the suction grille 7, a plurality of air outlets 9 serving as air outlets are provided. In the first embodiment, each of the decorative panel 15 and the suction grille 7 has four outer edges, and four outlets 9 are provided. Arranged along corresponding sides of the panel 6 and the suction grille 7. The four outlets 9 are positioned so as to surround the suction grille 7. Each air outlet 9 is provided with a wind direction plate 13 that adjusts the direction of air to be blown out.

The fan motor 2 is disposed in the center of the main 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 as a blower is attached to a rotating shaft extending downward in the fan motor 2. Further, between the turbo fan 1 and the suction grill 7, a bell mouth 14 that forms a suction air path from the suction grill 7 toward the turbo fan 1 is provided. The turbofan 1 sucks air into the main body from the suction grill 7 and causes the air to flow out from the blowout port 9 into the room 17 that is the target space.

The heat exchanger 3 is disposed on the radially outer side of the turbofan 1. In other words, the heat exchanger 3 is accommodated in the main body 20, and in particular, the flow of air sucked into the main body 20 from the suction port (suction grill 7) and blown out from the blowout port 9 to the target space. It arrange | positions in a path | route and performs heat exchange between the air and a refrigerant | coolant.

The heat exchanger 3 has a plurality of fins arranged at predetermined intervals in the horizontal direction, and a heat transfer pipe passing through the fins, and the heat transfer pipe is connected to a well-known outdoor unit (not shown) by a connection pipe. As a result, a cooled refrigerant or a heated refrigerant is supplied to the heat exchanger 3. In addition, the structure and aspect of the turbo fan 1, the bell mouth 14, and the heat exchanger 3 are not specifically limited, In this Embodiment 1, a well-known thing is used.

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 in the outward direction in the radial direction. The air blown out in this way is subjected to heat exchange and humidity adjustment when passing through the heat exchanger 3, and then changed in the flow direction downward, and blown out from each of the outlets 9 into the room 17.

Next, details of the air outlet 9 will be described with reference to FIGS. FIG. 2 is a view showing a longitudinal section of one outlet 9 relating to the first embodiment. Moreover, in this Embodiment, the longitudinal cross-section of the heat exchanger exit side air channel wall shall be maintained the same over the longitudinal direction (the direction orthogonal to both the up-down direction and the width direction, the length direction). .

As shown in FIG. 1, the air outlet 9 is located between the heat exchanger 3 and the main body side plate 4 in a plan view. More specifically, as shown in FIG. 2, it is located between the heat exchanger outlet side air passage wall 10 and the opposite side air passage wall 11 facing the heat exchanger outlet side air passage wall 10. The main body center side (heat exchanger side / blower side) of the air outlet 9 is defined by the heat exchanger outlet side air passage wall 10, and the outer edge side of the decorative panel 6 at the air outlet 9 is the side plate side of the main body. It is demarcated by a certain opposite air passage wall 11. Both ends of the heat exchanger outlet-side air passage wall 10 and both ends of the opposing-side air passage wall 11 are connected by a pair of side walls (wall portions indicated by reference numeral 12 in FIG. 10). The airflow that has passed through the heat exchanger 3 flows into the air outlet 9 from the heat exchanger outlet side air passage wall 10 side.

In the first embodiment, when the thickness of the heat exchanger outlet side air passage wall 10 of the air outlet 9 is L1, and the inlet width of the air outlet 9 is L2, L1 is in a range of 0.15L2 to 0.25L2. Yes. FIG. 3 shows the relationship between L1 / L2 and the air volume. As shown in FIG. 3, when the thickness L1 <0.15L2 of the heat exchanger outlet side air passage wall 10 is set, the airflow at the inlet portion of the outlet 9 is reduced when the airflow flows into the outlet 9. Separation occurs greatly, ventilation resistance increases, and air volume decreases. On the other hand, when the thickness L1 of the heat exchanger outlet-side air passage wall 10 is greater than 0.25L2, the ventilation resistance increases and the air volume decreases due to the reduction of the air passage width. On the other hand, as in the first embodiment, a sufficient air volume is ensured when L1 is in the range of 0.15L2 to 0.25L2.

According to the air conditioner according to Embodiment 1 configured as described above, the thickness L1 of the heat exchanger outlet-side air passage wall 10 is set in the range of 0.15L2 to 0.25L2, so It is possible to suppress an increase in ventilation resistance due to peeling and an increase in ventilation resistance due to reduction of the air outlet. As a result, sufficient flow rate can be secured, noise can be reduced, and energy saving can be realized. Furthermore, the reduction of the wind speed can be suppressed by the separation and reduction of the airflow, and as a result, the occurrence of condensation on the wind direction plate due to the entrainment of the indoor air can be prevented.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described based on FIGS. FIG. 4 is a view showing a longitudinal section of one outlet 9 relating to the second embodiment. Moreover, in this Embodiment, the longitudinal cross section of the heat exchanger exit side air channel wall shall be maintained the same over a longitudinal direction. In addition, the air conditioner of this Embodiment 2 shall be the same as that of Embodiment 1 except the part demonstrated below.

In the second embodiment, the portion on the outlet side at the upper end of the heat exchanger outlet-side air passage wall 110 that defines the outlet 9 (on the downstream side referred to as the airflow flowing out of the heat exchanger and flowing down the outlet) A curved surface portion 121 is formed. The curved surface part 121 is configured by a curved surface that protrudes upward (not on the air channel wall inside but on the outside / air channel side). The thickness direction range L3 of the curved surface portion 121 is 0.4L1 or more. The curved surface portion 121 may be formed with, for example, at least one or more curvature radii, or may be formed with a curved surface whose radius changes continuously. Note that L3 is L1 at the maximum (L3 ≦ L1).

Fig. 5 shows the relationship between L3 / L1 and air volume. As can be seen from FIG. 5, when L3 / L1 <0.4, the air volume increases as L3 increases, and when L3 / L1 ≧ 0.4, the air volume is substantially constant regardless of L3. Therefore, in the second embodiment, the thickness direction range L3 of the curved surface portion 121 is set to 0.4L1 or more so that a substantially constant large air volume can be maintained.

In the air conditioner according to the second embodiment configured as described above, the same advantages as those of the first embodiment are obtained. In addition, in the second embodiment, the upper end of the heat exchanger outlet side air passage wall 110 has a curved shape, so that separation of airflow can be suppressed and increase in ventilation resistance can be suppressed. . As a result, it is possible to further improve energy saving, reduce blowing noise, and prevent dew condensation due to entrainment of indoor air.

Embodiment 3 FIG.
Next, Embodiment 3 of the present invention will be described with reference to FIG. FIG. 6 is a view showing a longitudinal section of one outlet 9 relating to the third embodiment. Moreover, in this Embodiment, the longitudinal cross section of the heat exchanger exit side air channel wall shall be maintained the same over a longitudinal direction. In addition, the air conditioner of this Embodiment 3 shall be the same as that of

Embodiment

1 or 2 except the part demonstrated below.

The air conditioner of the third embodiment has a curved surface part 221 and a flat surface part 223 at the upper end of the heat exchanger outlet side air passage wall 210. The curved surface portion 221 is located on the side near the center of the air outlet 9 at the upper end of the heat exchanger outlet side air passage wall 210, and the flat portion 223 is at the upper end of the heat exchanger outlet side air passage wall 210, It is located on the side closer to the heat exchanger 3 than the curved surface portion 221 (the side away from the central portion of the air outlet 9), that is, on the upstream side as the airflow flowing out of the heat exchanger 3 and flowing down the air outlet 9. The curved surface portion 221 is configured by a curved surface that protrudes upward. The flat surface part 223 is formed so as to be continuous with the curved surface part 221. The thickness direction range L4 of the flat portion 223 is desirably 1 mm or more.

In the air conditioner according to the third embodiment configured as described above, the same advantages as those of the first or second embodiment are obtained. In addition, in Embodiment 3, since the flat surface portion 223 exists on the upstream side of the curved surface portion 221 at the upper end of the heat exchanger outlet side air passage wall 210, the airflow before flowing into the curved surface portion 221 is heated. It becomes easy to stick to the wall surface of the exchanger outlet side air passage wall 210, and the separation of the airflow in the curved surface portion 221 can be further suppressed. As a result, it is possible to further improve energy saving, reduce blowing noise, and prevent condensation due to the entrainment of room air.

Embodiment 4 FIG.
Next, a fourth embodiment of the present invention will be described based on FIG. FIG. 7 is a view showing a longitudinal section of one outlet 9 relating to the fourth embodiment. Moreover, in this Embodiment, the longitudinal cross section of the heat exchanger exit side air channel wall shall be maintained the same over a longitudinal direction. The air conditioner of the fourth embodiment is the same as that of any of the first to third embodiments except for the parts described below.

The heat exchanger outlet side air passage wall 310 in the air conditioner of Embodiment 4 has a curved surface portion 321 and a flat surface portion 325. The curved surface portion 321 is located at the upper end of the heat exchanger outlet side air passage wall 310. The curved surface portion 321 is configured by a curved surface that is convex upward. The flat surface portion 325 is located on the side closer to the central portion of the air outlet 9 than the curved surface portion 321, that is, on the downstream side as the airflow flowing out from the heat exchanger 3 and flowing down the air outlet 9. In addition, the flat surface portion 325 is located immediately downstream of the upper end of the heat exchanger outlet-side air passage wall 310, that is, the most upstream of the region of the heat exchanger outlet-side air passage wall 310 that faces the opposing air passage wall 11. Located on the side part. The flat surface portion 325 is formed so as to be continuous with the curved surface portion 321.

Also in the air conditioner according to the fourth embodiment configured as described above, the same advantages as any of the corresponding ones of the first to third embodiments are obtained. In addition, in the fourth embodiment, the flat surface portion 325 is provided on the downstream side of the curved surface portion 321 at the upper end of the heat exchanger outlet side air passage wall 310, so that even if the air flow is separated at the curved surface portion 321. , Can promote the reattachment of airflow. As a result, it is possible to further improve energy saving, reduce blowing noise, and prevent condensation due to the entrainment of room air.

Embodiment 5 FIG.
Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 8 is a view showing a longitudinal section of one outlet 9 relating to the fifth embodiment. Moreover, in this Embodiment, the longitudinal cross section of the heat exchanger exit side air channel wall shall be maintained the same over a longitudinal direction. The air conditioner of the fifth embodiment is the same as that of any of the first to fourth embodiments except for the parts described below.

The heat exchanger outlet side air passage wall 410 in the air conditioner of Embodiment 5 has a step 427 formed therein. The step 427 is located in a region of the heat exchanger outlet side air passage wall 410 facing the opposite air passage wall 11. A region below the step 427 in the heat exchanger outlet side air passage wall 410 (downstream side as an airflow flowing out of the heat exchanger 3 and flowing down the outlet 9) is recessed on the side away from the opposing air passage wall 11. It is out.

Also in the air conditioner according to the fifth embodiment configured as described above, the same advantages as any of the corresponding ones of the first to fourth embodiments are obtained. In addition, in the fifth embodiment, even if the airflow is separated from the upper end of the heat exchanger outlet side air passage wall 410 to the region facing the opposite air passage wall 11 and a vortex is generated in the separation region, a step 427 is formed. Can reduce the vortex. This also makes it possible to improve energy saving, reduce blowing noise, and prevent condensation due to air entrainment. *

Embodiment 6 FIG.
Next, a sixth embodiment of the present invention will be described with reference to FIG. FIG. 9 is a view showing a longitudinal section of one outlet 9 relating to the sixth embodiment. Moreover, in this Embodiment, the longitudinal cross section of the heat exchanger exit side air channel wall shall be maintained the same over a longitudinal direction. The air conditioner of the sixth embodiment is the same as that of any of the first to fifth embodiments except for the parts described below. Moreover, FIG. 9 shows an example to the last, and illustrates a mode in which the fifth embodiment is combined with the fourth embodiment described above.

In the air conditioner of the sixth embodiment, the distance L5 between the heat exchanger outlet side air passage wall 510 and the heat exchanger 3 is set to be smaller than the thickness L1 of the heat exchanger outlet side air passage wall 510. Has been.

Also in the air conditioner according to the sixth embodiment configured as above, the same advantages as any of the corresponding ones of the first to fifth embodiments are obtained. In addition, in Embodiment 6, since the distance L5 between the heat exchanger outlet side air passage wall 510 and the heat exchanger 3 is smaller than the thickness L1 of the heat exchanger outlet side air passage wall 10, the heat exchanger The airflow passing through the heat exchanger 3 at a position lower than the upper end of the outlet-side air passage wall 510 can be reduced, and separation that occurs when the airflow gets over the heat exchanger outlet-side airway wall 510 can be suppressed. . As a result, it is possible to further improve energy saving, reduce blowing noise, and prevent condensation due to the entrainment of room air.

Embodiment 7 FIG.
Next, a seventh embodiment of the present invention will be described with reference to FIG. FIG. 10 is a view of one air outlet 9 according to Embodiment 7 of the present invention as viewed from above. The air conditioner of the seventh embodiment is the same as that of any of the first to sixth embodiments except for the parts described below. In addition, the features in each of the first to sixth embodiments are applied to the central portion in the longitudinal direction of the heat exchanger outlet side air passage wall.

As shown in FIG. 10, the air outlet 9 includes a plan view, a heat exchanger outlet side air passage wall 610, an opposite side air passage wall 11, and opposite ends of these heat exchanger outlet side air passage walls 610. The air passage wall 11 is defined by a pair of side walls 12 that connect both ends of the air passage wall 11. In the seventh embodiment, the thickness L1 ′ at both ends in the longitudinal direction of the heat exchanger outlet side air passage wall 610 is set to be larger than the thickness L1 at the center in the longitudinal direction of the heat exchanger outlet side air passage wall 610. It is getting bigger.

In the air conditioner according to the seventh embodiment configured as described above, the same advantages as any of the corresponding ones of the first to sixth embodiments are obtained. In addition, the following advantages are also obtained in the seventh embodiment. In other words, considering the flow of the air flow across the air outlet 9, air flows not only from the heat exchanger outlet side air passage wall 610 side but also from the pair of side wall 12 sides at both longitudinal ends of the air outlet 9. To do. For this reason, the both ends of the longitudinal direction in the blower outlet 9 tend to peel off more easily than the central part of the blower outlet 9 in the longitudinal direction. On the other hand, in the seventh embodiment, the thickness L1 ′ of both ends in the longitudinal direction of the heat exchanger outlet side air passage wall 610 is set at the central portion in the longitudinal direction of the heat exchanger outlet side air passage wall 610. By making it larger than the thickness L1, it is possible to reduce the airflow flowing into both ends in the longitudinal direction of the air outlet 9, and to suppress the separation of the airflow as viewed in the entire longitudinal direction. As a result, it is possible to further improve energy saving, reduce blowing noise, and prevent condensation due to the entrainment of room air.

Embodiment 8 FIG.
Next, an eighth embodiment of the present invention will be described. The air conditioner of the eighth embodiment is the same as that of any of the first to seventh embodiments except for the parts described below. Further, the features in the first to seventh embodiments are applied to the central portion in the longitudinal direction of the heat exchanger outlet side air passage wall.

In the eighth embodiment, the heat exchanger outlet-side air passage wall is related to the curved surface portion provided at the upper end of the heat exchanger outlet-side air passage wall of the air outlet 9 in any of the first to seventh embodiments. The curved surface portions located at both ends in the longitudinal direction are larger than the curved surface portions located at the central portion in the longitudinal direction of the heat exchanger outlet side air passage wall. About this size, the size of the convex portion constituting the curved surface portion, the width of the heat exchanger outlet side air passage wall in the portion having the curved surface portion, and the vertical direction of the curved portion in the heat exchanger outlet side air passage wall This is based on a comparison regarding either the range or the occupying range of the curved surface portion viewed from the side (as viewed in the embodiment of FIG. 2). In addition, about this point, FIG. 10 is also a figure which shows the one aspect | mode of this Embodiment 8 when it sees by the comparison regarding the width | variety of the heat exchanger exit side air path wall in the part which has a curved-surface part.

In the air conditioner according to the eighth embodiment configured as described above, the same advantages as any of the corresponding ones of the first to seventh embodiments are obtained. Also in the eighth embodiment, the same advantage as that of the seventh embodiment described above can be obtained in the curved surface portion of the heat exchanger outlet side air passage wall, improving the energy saving, reducing the blowing sound, and It is possible to prevent condensation due to the entrainment of indoor air.

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 in which a blower is installed.

Although the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical idea and teachings of the present invention. It is self-explanatory.

3 Heat exchanger, 9 outlet, 10, 110, 210, 310, 410, 510, 610 Heat exchanger outlet side air passage wall, 11 opposite side air passage wall, 121, 221, 321 curved surface portion, 223, 325 plane Part, 427 steps.

Claims

A body having at least one inlet and at least one outlet at the bottom;
A heat exchanger that is housed in the main body and that is disposed in a flow path of air that is sucked into the main body from the suction port and blown out from the air outlet to the target space,
The air outlet is between a heat exchanger outlet side air passage wall and an opposing side air passage wall facing the heat exchanger outlet side air passage wall,
The thickness L1 of the heat exchanger outlet side air passage wall is 0.15L2 to 0.25L2 where the inlet width of the outlet is L2.
Air conditioner.
In the portion on the air outlet side at the upper end of the heat exchanger outlet side air passage wall, a curved surface portion formed of a curved surface that is convex toward the air passage side is formed,
The thickness direction range L3 of the curved surface portion is 0.4L1 or more.
The air conditioner according to claim 1.
The upper end of the heat exchanger outlet side air passage wall has a curved surface portion and a flat surface portion,
The curved surface portion is configured by a curved surface that is convex toward the air passage side, and is located on the side near the central portion of the air outlet at the upper end of the heat exchanger outlet air passage wall,
The flat surface portion is located closer to the heat exchanger than the curved surface portion at the upper end of the heat exchanger outlet side air passage wall.
The air conditioner according to claim 1.
The heat exchanger outlet side air passage wall has a curved surface portion and a flat surface portion,
The curved surface portion is configured by a curved surface that is convex toward the air passage side, and is located at the upper end of the heat exchanger outlet side air passage wall,
The flat surface portion is located closer to the central portion of the blower outlet than the curved surface portion, and is a portion on the most upstream side of a region facing the opposite air passage wall in the heat exchanger outlet air passage wall. Located in the
The air conditioner according to claim 1.
The curved surface portion located at both ends in the longitudinal direction of the heat exchanger outlet side air passage wall is larger than the curved portion located at the center portion in the longitudinal direction of the heat exchanger outlet side air passage wall.
The air conditioner according to any one of claims 2 to 4.
The heat exchanger outlet side air passage wall has a step,
The step is located in a region of the heat exchanger outlet side air passage wall facing the opposite air passage wall,
The region below the step in the heat exchanger outlet side air passage wall is recessed to the side away from the opposing air passage wall.
The air conditioner according to any one of claims 1 to 5.
The distance L5 between the heat exchanger outlet side air passage wall and the heat exchanger is smaller than the thickness L1 of the heat exchanger outlet side air passage wall.
The air conditioner according to any one of claims 1 to 6.
The thickness L1 ′ at both ends in the longitudinal direction of the heat exchanger outlet side air passage wall is larger than the thickness L1 of the center portion in the longitudinal direction of the heat exchanger outlet side air passage wall.
The air conditioner according to any one of claims 1 to 7.