JPH04110335U - Ceiling-mounted air conditioner - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent a decrease in wind speed when the blowout air volume is small, and to regulate the wind direction by utilizing the curvature of the inner and outer wall surfaces. [Structure] The curvature of the inner wall surface 20 at the outlet of the air blowing passage 25 is made larger than that of the outer wall surface 21. And the louver
23 has a concave arc shape with respect to its rotation center 24, and the rotation center 24 is located closer to the outer wall.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a ceiling-embedded air conditioner that is embedded in the ceiling.

0002

[Conventional technology]

An example of a conventional air conditioner of this type is shown in FIG. Inside the case body 2 buried in the ceiling 1 are a heat exchanger 7, a drain pan 10, and a motor. The case body 2 has a ceiling panel installed at the bottom of the case body 2. 8 is installed. A suction port 3 is formed in the center of the ceiling panel 8. An air outlet 4 is formed adjacent to the inlet 3.

0003 When this air conditioner is operating, refrigerant from an outdoor unit (not shown) flows through the heat exchanger 7. The air circulates, and the blower 6 is driven by the motor 5. Then, the indoor air in room 9 From the suction port 3, it passes through the suction grill 11 and the filter 13, and is guided by the air guide plate 12 to the blower 6. is inhaled and energized. Then, it is cooled or heated in the process of flowing through the heat exchanger 7. As a result, the air becomes conditioned air and is blown out from the outlet 4 into the room 9.

0004

[Problem that the idea aims to solve]

In the above conventional air conditioner, the number of rotations of the blower 6 is increased to increase the air volume. This causes a so-called draft, which conversely reduces the rotational speed of the blower 6 and reduces the air volume. There was a problem that the conditioned air did not reach the lower part of the room 9.

[0005]

[Means to solve the problem]

This invention was proposed to solve the above problems, and its gist is as follows: However, the exit part of the downward air blowing channel formed by the inner wall surface and the outer wall surface A ceiling-mounted air conditioner with a louver that can rotate around a horizontal axis. The curvature of the inner wall surface at the outlet of the air blowing channel is made larger than that of the outer wall surface. The louver is made to have a concave arcuate cross section with respect to its center of rotation, and the louver is One end of the louver is in contact with the outer wall surface, but the center of rotation of the louver is in contact with the inner wall surface. This is a ceiling-mounted air conditioner characterized by being located in a position that does not

[0006]

[Effect]

This invention has the above configuration, so when the air volume is low, the louver By bringing one end into contact with the outer wall surface and blocking the air blowing channel near the outer wall surface, the It reaches the bottom by accelerating the exit air and passing it along the inner wall surface with large curvature. let When the air volume is large, the louver can be placed almost parallel to the air blowing path to improve the airflow. The exit air is passed through the entire area of the air outlet channel.

[0007]

【Example】

One embodiment of the invention is shown in FIG. In Fig. 1, 20 is the inner wall surface, 21 is the outer wall surface, 23 is the louver, and 24 is the rotation of the louver 23. It is central. A downward air blowing passage 25 is formed by the inner wall surface 20 and the outer wall surface 21, and the inner wall surface 20 The curvature is larger than that of the outer wall surface 21. The louver 23 can be rotated around a rotation center 24 that is approximately horizontal to the outlet of the air blowing passage 25. It has a concave arcuate cross section with respect to the rotation center 24. Rotation center 24 is empty The louver 23 is installed near the outer wall surface 21 at the outlet of the air blowing channel 25. However, it does not come into contact with the inner wall surface 20. Other configurations are shown in Figure 2. It is the same as the conventional one.

[0008] Therefore, when the rotation speed of the blower 6 is high, that is, when the air volume is large, the louver 23 is in the rotational position 23-1 shown by the solid line, and the louver 23 is located between its back surface 23a and the inner wall surface 20. It is approximately parallel to the air blowing passage 25 with a slight interval between the two. Thus, the blown air The air passes through the entire area of the air blowing channel 25 and is guided by the inner wall surface 20 and the outer wall surface 21 toward the bottom. It's blown out. If the louver 23 is placed in the rotation position shown in figure 23-2, the blown air will be It is guided by the vent surface 23b of the louver 23 and the outer wall surface 21 and is blown out almost horizontally.

[0009] When the rotation speed of the blower 6 is low, that is, when the air volume is low, move the louver 23 as shown in the figure. 23-3, and bring one end into contact with the outer wall surface 21. Then, Louva 23 closes the air blowing passage 25 closer to the outer wall surface, so the cross-sectional area of the passage becomes smaller. this As a result, the blown air is accelerated and flows closer to the inner wall surface, so the inner wall has a large curvature. It is blown downward along the surface 20 and reaches the lower part of the chamber. If the louver 23 is set to the rotational position shown in 23-4 in the figure, the cross-sectional area of the air blowing passage 25 is becomes smaller, the blown air is accelerated, and flows closer to the outer wall surface, so the curvature is smaller. It is blown diagonally downward along the outer wall surface 21.

0010

[Effect of the idea]

In this invention, the curvature of the inner wall surface at the outlet of the air blowing channel is The louver is made larger than that, and the louver has a concave arcuate cross section with respect to the center of rotation. Set the center of rotation of the louver to a point where one end of the louver touches the outer wall surface but does not touch the inner wall surface. Because the louver is located at Reduce the area and increase the wind speed while directing the blown air along the inner or outer wall surface. By allowing the flow to flow through, the curvature difference between the inner wall surface or outer wall surface is used to blow downward or diagonally. It can be sent out and sent far away. When the air volume is large, set the louver to a rotating position that does not limit the flow area of the blowing air flow path. This allows the blowing air to flow through the entire area of the blowing air passage. The blown air is blown downward or diagonally downward by being guided by a louver. can be done. In this way, it is possible to prevent drafts from occurring when the air volume is high. At the same time, even when the air volume is low, the blown air can reach long distances. In addition, it is possible to limit the cross-sectional area of the blowing air flow path and change the blowing direction of the blowing air. - Since it can be easily regulated by the bar, the structure and operation are simple. Become.

[Brief explanation of drawings]

FIG. 1 is a partially enlarged sectional view showing one embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a conventional ceiling-embedded air conditioner.

[Explanation of symbols]

25 Air outlet flow path 20 Inner wall surface 21 External wall surface 23 Louva 24 Center of rotation

Claims (1)

[Scope of utility model registration request] 1. A ceiling-embedded air conditioner comprising a louver rotatable around a horizontal axis installed at the outlet of a downward air blowing passage formed by an inner wall surface and an outer wall surface, wherein the air The curvature of the inner wall surface at the outlet of the blowout flow path is made larger than that of the outer wall surface, and the louver has a circular arc cross section concave with respect to its rotation center, and the rotation center of the louver is set so that one end of the louver Although it comes into contact with the above outer wall surface,
A ceiling-embedded air conditioner characterized by being located at a position that does not come into contact with the inner wall surface.