WO1999020945A1

WO1999020945A1 - Air conditioner

Info

Publication number: WO1999020945A1
Application number: PCT/JP1998/004450
Authority: WO
Inventors: Tsunehisa Sanagi; Taku Hirakawa
Original assignee: Daikin Industries, Ltd.
Priority date: 1997-10-17
Filing date: 1998-10-02
Publication date: 1999-04-29
Also published as: HK1024944A1; AU9282198A; CN1143088C; ES2236938T3; EP0962716A1; CN1242831A; AU719975B2; JP3240977B2; EP0962716A4; JPH11118234A; DE69828490D1; DE69828490T2; EP0962716B1

Abstract

An air conditioner comprising an outlet (11) from which the air from an indoor heat exchanger (7) is discharged, and closing members (20, 21) which are provided in positions spaced from end portions (11a, 11b) of the outlet (11) by a predetermined distance X toward the central portion thereof, and which are adapted to partially close the outlet (11), whereby, when the cold air from the indoor heat exchanger (7) impinges upon the closing members (20, 21) during a room cooling operation, it can flow in a divided manner through openings on both sides of the closing members (20, 21), end portions of an air directing blade (15) being therefore covered with the cold air to prevent the cold air and indoor air from contacting each other at the mentioned end portions, so that it becomes possible to set flows of the air smooth and minimize the occurrence of dew condensation.

Description

Specification

Air Conditioner Technical Field

The present invention relates to an air conditioner that prevents dew condensation.

Background art

Conventionally, indoor units for air conditioners are shown in Fig. 4A. The indoor unit 101 sucks air from a suction port 105 with a turbo fan 103 driven by a motor 102, and heat-exchanges this air with a heat exchanger 106 before blowing it out. It blows out from the outlet 1 08 via the passage 1 0 7. In addition, 109 is a wind direction blade.

FIG. 4B shows the indoor unit 101 viewed from below. Fig. 4A is a cross section taken along the line Z-Z in Fig. 4B. An elongated rectangular outlet 105 surrounding the inlet 108 is formed in the panel 112. Further, the case 115 has closing portions 113 A, 113 ぐ for closing both end regions of predetermined dimensions from both ends of the outlet 110 to the center. Similarly, the case 1 15 has a closing portion 1 16 for closing a predetermined dimension region from the end of the outlet 1 08 to the center, and a closing portion for closing a predetermined size region from the end of the outlet 1 1 1 to the center. It has 1 1 7

By narrowing the outlet 110 and outlet 108 and 111 with the closing portions 1 13 A, Β and 1 16, 17, the outlets 108, 110, The speed of the wind blown from 1 1 1 is increased to extend the reach of the wind. By the way, at the time of cooling operation, at the end of the wind direction blade 109, cold blown air comes into contact with room air having a higher temperature than the blown air, and dew occurs at the end of the wind direction blade 109. There is a problem that water drops may fall.

Disclosure of the invention Therefore, an object of the present invention is to provide an air conditioner that can increase the blowing wind speed without dew condensation at the outlet.

In order to achieve the above object, an air conditioner according to the present invention includes an air outlet that blows air from an indoor heat exchanger, and a predetermined distance from an end of the air outlet toward a center of the air outlet. It is characterized by comprising a closing member arranged and partially closing the air outlet, and a wind vane provided downstream of the closing member.

In this air conditioner, the closing member is disposed at a position separated from the end of the outlet by a predetermined dimension. Therefore, when the cool air from the indoor heat exchanger hits the closing member during cooling, the cool air can flow through the openings on both sides of the closing member.

Therefore, according to this air conditioner, the end of the wind direction blade is covered with cold air, compared with a case where a closing portion continuously extending from the end of the air outlet is provided as in the related art. Since the contact between the cold air and the room air at the end of the blade can be avoided, dew condensation can be suppressed. Therefore, according to this air conditioner, it is possible to increase the blowing wind speed and increase the reaching distance of the blowing wind without dew condensation at the end of the wind direction blade.

The air conditioner according to one embodiment is the air conditioner according to claim 1, wherein a size between both ends of the air outlet is smaller than a size between both ends of an opening to which the wind direction blade is attached, .

In this air conditioner, for example, when the size between both ends of the outlet is smaller than the size between both ends of the opening to which the wind vane is attached due to the installation of the drain pan, a predetermined distance from the end of the outlet is With the closing member placed only a distance away, the blowing speed can be increased without dew condensation on the end of the wind vane, and the reaching distance of the blowing wind can be extended. Further, an air conditioner of another embodiment is an air conditioner in which a fan and a heat exchanger are arranged in a casing, an outlet passage forming member that forms an outlet passage is disposed, and a wind vane is provided at an outlet. A space is provided between the blow-out passage forming member and the axial end of the wind-direction vane, and the wind is guided from the blow-out passage toward the space, and an axial end of the wind-direction vane is provided. A guide plate that guides wind to the air outlet, and a closing member that is disposed at a predetermined distance from the end of the outlet toward the center of the outlet and partially blocks the outlet.

In this air conditioner, when performing a cooling operation, a part of the cool air (cool air) flowing through the outlet passage is connected to the outlet passage forming member and the axial end of the wind direction blade by the guide plate. It is guided towards the space between and is guided further to the axial end of the wind vane.

Therefore, a small amount of cool air flows around the axial end of the wind direction blade, and the turbulence of the wind around the end can be suppressed. Therefore, the cool air and the warm air in the room are not mixed around the axial end of the wind direction blade, and dew condensation hardly occurs at the end.

An air conditioner according to one embodiment is the air conditioner according to claim 3, wherein a part of the guide plate protrudes into the blowing passage, and the guide plate includes an axial direction of the wind direction blade. There is a hole at the end to guide the wind.

In this air conditioner, a part of the cool air in the blow passage is bent along the surface of the guide plate by a part of the guide plate protruding into the blow passage. Then, the cold air flows in the space along the guide plate, and is further guided to the axial end of the wind direction blade through a hole provided in the guide plate. Therefore, a small amount of cold air can flow reliably around the axial end of the wind direction blade, and wind turbulence can be reliably suppressed around the end. Therefore, the wind direction blade Mixing of the cool air and the warm air in the room around the end in the axial direction is surely prevented, and the occurrence of dew condensation at the end is surely prevented.

An air conditioner according to another embodiment of the present invention is the air conditioner according to claim 3 or 4, wherein a tip end of the guide plate protruding into the outlet passage faces upstream of the outlet passage with respect to a base. It is bent diagonally.

In this air conditioner, the front end of the guide plate protrudes into the outlet passage, and is bent obliquely toward the upstream side of the outlet passage with respect to the base. Part of the flowing cold air is taken in reliably and smoothly, and flows in the space along the surface of the guide plate. Therefore, it is possible to reliably and smoothly guide the cool air to the axial ends of the wind direction blades, thereby preventing the occurrence of dew condensation.

An air conditioner according to one embodiment is the air conditioner according to any one of claims 3 to 5, wherein a wind is applied to a decorative panel having an air outlet at an axial end of the wind direction vane. A guiding section is provided.

In this air conditioner, the cool air to be blown out from the outlet is guided by a guide portion provided on the decorative panel, and is guided around the axial end of the wind direction blade, particularly behind the end. It can be prevented from flowing along and forming condensation around the axial end of the wind vane. Therefore, not only the guide plate guides the cool air from the upstream side to the axial end of the wind direction vane, but also the cool air from the downstream side to the back side of the end by the guide portion of the decorative board. It is possible to more reliably prevent dew condensation from forming around.

In addition, an air conditioner of another embodiment has a fan and a heat exchanger disposed in a casing, a discharge path forming member that forms a discharge path, a suction panel and a discharge port provided in a decorative panel, A wind direction vane is provided at this outlet, and air is sucked from the above-mentioned inlet, and is passed through the fan, the heat exchanger, and the outlet passage. In the air conditioner that blows out from the outlet, the guide panel that guides the wind to an axial end of the wind direction blade is separated from the decorative panel by a predetermined distance from the end of the outlet toward the center of the outlet. And a closing member for partially closing the outlet.

In this air conditioner, the cool air to be blown out from the outlet is guided by a guide portion provided on the decorative panel, and is guided around the axial end of the wind direction blade, particularly behind the end. It is possible to prevent the formation of dew condensation around the axial end of the wind vane, especially on the back side of the end.

The air conditioner according to one embodiment is the air conditioner according to claim 6 or 7, wherein the guide portion is located outside a corner of the outlet, and a part of the guide portion is provided in the outlet passage. Facing the inside part.

In this air conditioner, the cold air to be blown out from the outlet collides with a part of the guide part facing a part of the inside of the outlet passage and is guided along the surface of the guide part. . And since the guide is located outside the corner of the outlet, the cool air flowing along the surface of the guide is smoothly blown out from the outlet. Therefore, since the wind smoothly flows around the axial end of the wind direction blade, dew condensation can be reliably prevented.

An air conditioner according to another embodiment is the air conditioner according to any one of claims 3 to 8, wherein the outlet passage forming member is a part of a drain pan.

In this air conditioner, since the outlet passage forming member is a part of the drain pan, the outlet passage can be easily formed, and when a space for the guide plate is provided, the space is defined by the drain pan. It can be easily and inexpensively formed by notching the part.

Further, an air conditioner of one embodiment is described in any one of claims 1 to 9. In the air conditioner of (1), a value obtained by dividing a separation dimension in which the closing member is away from an end of the outlet toward the center of the outlet by a width of the closing member is greater than 0.2, And less than 1.0.

In this air conditioner, (separation dimension B) Z (width dimension A)

0.2 <B / A <1.0

Since it is set to, it is possible to appropriately achieve the dew-prevention ability and increase the blowing wind reach distance. That is, if this BZA is not more than 0.2, the separation dimension B is small and the amount of cold air flowing to the end of the wind direction blade is insufficient, so that the dew preventing ability at this end is insufficient, and the closing member is not provided. There is a problem that the wind direction blades in the area facing the closing member due to the large width dimension A are exposed. Further, when the above B / A is 1.0 or more, it is not possible to expect an increase in the blown air reach due to an excessively large separation dimension B or an excessively small width dimension A.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1A is a sectional view of an indoor unit of an air conditioner as an embodiment of the present invention, and FIG. 1B is a bottom view of the indoor unit.

FIG. 2 is a cross-sectional view near the air outlet of the indoor unit.

FIG. 3A is a cross-sectional view of the vicinity of an air outlet of a modification of the above embodiment, and FIG. 3B is a bottom view of the above modification.

FIG. 4A is a cross-sectional view of a conventional air conditioner indoor unit, and FIG. 4B is a bottom view of the indoor unit.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an air conditioner of the present invention will be described in detail with reference to the illustrated embodiment. FIG. 1A shows a cross section of an indoor unit 1 of an air conditioner embedded in a ceiling as an embodiment of the present invention, and FIG. 1B shows a state of the indoor unit 1 viewed from below. FIG. 1A is a cross-sectional view taken along section line AA of FIG. 1B. As shown in FIG. 1A, the indoor unit 1 includes a decorative panel 2, a main body case 3, a motor 5 disposed in the main body case 3, a turbo fan 6, and an indoor heat exchanger 7. The decorative panel 2 has a suction port 8 largely opened at the center, and elongated rectangular outlets 10, 11, 12 formed around the suction port 8. A grill 13 and a filter 14 are arranged in the suction port 8. Further, wind direction blades 15, 16, 17 for adjusting the wind direction are arranged at the outlets 10, 11, 12.

A closing member 20, 21 having a width Y is disposed at a position separated by a predetermined dimension X toward the center from both ends 1 1a, 1 lb of the outlet port 11 described above. It is fixed to the main body case 3 across the air outlet 11 and the air outlet 51 of the main body case 3 on the air conditioner main body side. Further, the closing members 22 and 23 are fixed to the main body case 3 so as to straddle the air outlets 10 and 12 and the air outlets 52 and 53 of the main body case 3.

According to the above configuration, the closing members 20 and 21 are arranged at positions separated from the ends 11 a and 11 b of the outlet 11 by a predetermined dimension X. Therefore, when the cool air from the indoor heat exchanger 7 hits the closing member 20 (2 1) during cooling, as shown in FIG. 2, the cool air blows off the openings 3 on both sides of the closing member 20 (2 1). It can flow divided into 1 and 32 (33). Therefore, according to this embodiment, unlike the conventional case where a closing portion continuously extending from the end of the air outlet is provided, the ends 16 A and 16 B of the wind direction blade 16 are opened. , 33, so that the contact between the cold air and the indoor air at the ends 16A, 16B of the wind direction blade 16 can be avoided. Therefore, dew condensation at the wind direction blades 16 ends 16 A and 16 B can be suppressed, and without increasing dew condensation, the blowing wind speed can be increased and the reaching distance of the blowing wind can be increased.

Also, in this embodiment, the (separation dimension X) / (width dimension) Y)

0.2 <Χ / Υ <1.0

Since it is set to, it is possible to appropriately achieve the dew-prevention ability and increase the blowing wind reach distance. In other words, if this Χ / Υ is less than 0.2, the separation dimension X is small and the end 16 の of the wind direction blade 16], 6] There is a problem that the dew-prevention ability of 16 mm is insufficient, and that the width dimension の of the closing members 20 and 21 is so large that dew occurs on the wind direction blades 16 in the region opposed to the closing members 20 and 21. Also, when the above Χ / Υ is 1.0 or more, an increase in the blown wind distance cannot be expected due to an excessively large separation dimension X or an excessively small width dimension Υ. In particular, if the above (separation dimension X) / (width dimension Υ) is set to about 0.6, it is possible to prevent the dewdrop and to maximize the reach of the blown wind.

Next, FIG. 3 shows a modification of the above embodiment. In this modification, the closing member

A guide plate is provided between the wind vanes 16 arranged downstream of 20, 21 and the projections 35, 36 projecting substantially horizontally from the lower end 3 of the case toward the closing members 20, 21.

3 7, 38 are arranged. Spaces 43, 43 are provided between the projecting portions 35, 36 and the axial ends 16A, 16B of the wind direction blades 16. The guide plates 37, 38 are fixed to the decorative panel 2 and partially face end openings 32, 33 between the closing members 20, 21 and the protruding portions 35, 36. are doing. The guide plates 37, 38 have a plurality of through holes 41, 41,... As shown in FIG. 3B. Also, in this modification, the presence of the protruding portions 35 and 36 allows the dimension D 1 between both ends of the outlet formed by the openings 32 and 33 and the opening 31 to be the outlet to which the wind vanes 16 are attached. (Opening) 11 The distance between both ends of D 1 is smaller than D 2. Then, for example, a part of a drain pan can be installed in the space above the protrusions 35, 36. Monkey

The protruding portions 35, 36 form a blowing passage forming member. The end openings 32, 33 and the opening 31 form an outlet passage. The protrusions 35,

If 36 is configured as a part of a drain pan (not shown), the structure can be simplified and the cost can be reduced. In addition, space for information boards 3 7, 3 8

43, 43 can be easily and inexpensively formed by cutting out a predetermined portion of the drain pan.

In this modified example, assuming that the cooling operation is performed, a part of the cool air (cool air) flowing through the end openings 32, 33 constituting the above-mentioned outlet passage is guided by the guide plates 37, 38 to the outlet passage. Are guided towards the spaces 43, 43 between the projecting parts 3, 5, 36 and the axial ends 16A, 16B of the wind vanes 16 and furthermore the axial direction of the wind vanes 16 Ends 16A, 16B.

Therefore, a small amount of cold air can flow around the axial ends 16 6 and 16B of the wind direction blade 16 to suppress wind turbulence at the ends 16A and 16B. it can. Therefore, there is no mixing of cool air and room warm air around the axial ends 16A, 16B of the wind direction blades 16, and it is difficult for the ends 16A, 16B to form dew. It becomes. As described above, in this modified example, a space is created above the protrusions 35, 36, and a desired mechanism (eg, a drain pan) can be installed in the space. In addition, prevention of dew condensation and increase in wind speed can be achieved. is there.

In this modification, a part of the guide plates 37, 38 overlaps with the openings 32, 33 forming the blow-out passage, and the guide plates 37, 38 include the wind vanes 16 Holes 41 for guiding the wind are provided at the axial ends 16 A and 16 B of the shaft. Therefore, a part of the guide plates 37, 38 causes part of the cold air in the openings 32, 33 to be bent along the surfaces of the guide plates 37, 38, It flows through the spaces 43, 43 along the inner plates 37, 38, and further passes through the holes 41 provided in the guide plates 37, 38, and the axial ends of the wind vanes 16 It is led to 16 A and 16 B. Therefore, it is possible to ensure that a small amount of cold air flows around the axial ends 16 A, B of the wind direction blades 16, and that wind turbulence is reliably suppressed around the ends 16 A, B. Can be. Therefore, it is possible to reliably prevent the mixture of the cool air and the warm air in the room around the axial ends 16 A and 16 B of the wind direction blades 16. The formation of dew on B can be reliably prevented.

Although not shown in the figure, guide plates 37, 37 protruding into

If the tip of (8) is bent obliquely toward the upstream side of the outlet passage with respect to the base, a part of the cool air flowing through the outlet passage is taken in reliably and smoothly at the tip. The space along the surface of the guide plates 37, 38

4 3, 4 3 can flow through. Therefore, it is possible to reliably and smoothly guide the cool air to the axial ends 16A and 16B of the wind direction blades 16 to prevent the occurrence of dew condensation.

In this modification, if the decorative panel 2 provided with the outlet 11 is provided with a guide portion (not shown) located downstream of the end 16 of the wind direction blade 16, the outlet 1 The cold air to be blown out from 1 is guided by the above-mentioned guide portion and is guided around the axial ends 16 A and 16 B of the wind direction blades 16, particularly behind the ends 16 A and 16 B. To prevent condensation from forming around the axial ends 16 A and 16 B of the wind direction blade 16. Therefore, the guide plates 37, 38 guide the cold air from the upstream side to the axial ends 16A, 16B of the wind direction blades 16 as well as the downstream side by the guide portion of the decorative panel 2. Since the cool air is guided from the side to the rear side of the ends 16A and 16B, the dew condensation around the ends 16A and 16B can be more reliably prevented. Further, when the guide portion is located outside the corner of the outlet 11 and a part of the inside is opposed to a part of the inside of the openings 32, 33 constituting the outlet passage. Then, the cold air that is about to be blown out from the outlet 11 collides with a part of the guide portion and is guided along the surface of the guide portion. Since this guide is located outside the corner of the outlet 11, the cool air flowing along the surface of the guide is smoothly blown out from the outlet 11. Therefore, since the cool air smoothly flows around the axial ends 16 A and 16 B of the wind direction blade 16, dew condensation can be reliably prevented.

Industrial applicability

INDUSTRIAL APPLICABILITY As described above, the air conditioner of the present invention can increase the blowing air speed without causing dew condensation at the outlet, and is useful for improving air conditioning performance while avoiding dew condensation.

Claims

The scope of the claims

1. The outlet (11, 51) that blows the wind from the indoor heat exchanger (7), and the outlet (11a, 11b) from the end (11a, 11b) of the outlet (11, 51) A closing member (20, 21) that is arranged at a predetermined distance away from the center of the opening and partially blocks the outlet (11, 51);

An air conditioner comprising: a wind vane (16) provided downstream of the closing member (20, 21).

2. The air conditioner according to claim 1,

An air conditioner characterized in that a dimension between both ends of the outlet (51) is smaller than a dimension between both ends of an opening (11) to which the wind direction blade (16) is attached.

3. Place the fan (6) and the heat exchanger (7) in the casing (3) and the blow-out passage forming members (35, 36) that form the blow-out passages (35, 36). , In an air conditioner with a wind direction blade (16) at the outlet (11),

A space (43) is provided between the outlet passage forming member (35, 36) and the axial end (16A, 16B) of the wind vane (16). The wind is guided from the passage (32, 23) to the space (43), and the wind is directed to the axial end (16A, 16B) of the wind direction blade (16). Guide boards (3 7, 3 8)

The air outlet (11) is disposed at a predetermined distance from the end (11a, 11b) of the air outlet (11a, 11b) toward the center of the air outlet, and partially closes the air outlet (11). An air conditioner comprising: a closing member (20, 21).

4. The air conditioner according to claim 3, wherein a part of the guide plate (37, 38) projects into the outlet passage (32, 33) and the guide plate (37, 38).

38), wind is guided to the axial ends (16A, 16B) of the wind vanes (16). An air conditioner having a hole (41).

5. The air conditioner according to claim 3 or 4,

The tips of the guide plates (37, 38) projecting into the outlet passages (32, 33) are bent obliquely toward the upstream of the outlet passages (32, 33) with respect to the base. An air conditioner characterized by that:

6. The air conditioner according to any one of claims 3 to 5, wherein a decorative panel (2) having an outlet (11) is provided with an axial end (16) of the wind vane (16). An air conditioner characterized by having a guide section for guiding wind to 16 A, 16 B).

7. Place the fan (6) and the heat exchanger (7) in the casing (3) and the blow-out passage forming members (35, 36) that form the blow-out passage, and attach them to the decorative panel (2). The inlet (8) and the outlet (10,11,12) are provided, and the airflow blades (15,16,17) are provided at the outlet (10,11,12). Air is sucked from the suction port (8), and is blown from the outlet (10, 11, 12, 12) through the fan, heat exchanger, and outlet passage (32, 33). On the machine,

A guide for guiding the wind to an axial end (16 A, 16 mm) of the wind direction vane (] 6) on the decorative panel (2);

The outlet (11) is located at a predetermined distance from the end (11a, 11b) of the outlet (11a, 11b) toward the center of the outlet, and the upper outlet (11) is partially An air conditioner comprising a closing member (20, 21) for closing.

8. In the air conditioner according to claim 6 or 7,

The guide is located outside the corner of the outlet (10, 11, 12), and a part of the guide faces a part of the inside of the outlet passage. Air conditioner.

9. In the air conditioner according to any one of claims 3 to 8, The air conditioner, wherein the outlet passage forming member is a part of a drain pan.

10. The air conditioner according to any one of claims 1 to 9, wherein the closing member (20, 21) is connected to an end (11a, 11b) of the outlet (11). The value obtained by dividing the distance (X) away from the center of the outlet by the width (Y) of the closing member (20, 21) exceeds 0.2, and An air conditioner characterized by being less than 1.0.