JPS6332242A - Air conditioner - Google Patents

Abstract

PURPOSE:To cause an amount of air passing through a heat exchanger to be substantially proportional to a width of the heat exchanger by a method wherein louvers are rotated to open or close a suction port, the width of each of the louvers which is far from an once-through fan is made larger and the width of each of the louvers which is near the once-through fan is made smaller. CONSTITUTION:Each of louvers is rotatably installed to an ornamental cover 4 through a fulcrum points 5a, 6a and 7a, respectively, and portions 5b and 6b of each of the louvers are cooperatively connected to a cam 11 fixed to a motor 10 through a connecting rod 12 and further a portion 7b of the louver is cooperatively connected to the cam 11 through a connecting rod 12'. When the motor 10 is rotated in a direction A, a large louver 5, a small louver 6 and an upper louver 7 are rotated up to a position indicated by a dotted line through a cooperating mechanism and then a suction port is left open. With this condition, if the motor 10 is rotated in a direction B, each of the louvers is rotated to a position indicated by a solid line and then a suction port is formed. An air speed is made slow as indicated by an arrow 8a at an upper part where a large deep length of a heat exchanger 1 and as indicated by an arrow 8b at a small louver 6 indicated by a dotted line 2, thereby the air speed is proportionally controlled to cause an action of the heat exchanger 1 to be substantially kept uniform.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioner, and particularly to an air conditioner having a suction port suitable for an indoor unit using a cross-flow fan.

[Conventional technology]

The conventional air conditioner is the Japanese Patent Application Laid-Open No. 60-176 shown in Fig. 4.
As described in No. 45, the wind speed distribution 18 of the air passing through the heat exchanger 14 was made uniform by providing a cutting part 15 in the middle of the heat exchanger 14 in which a part of the cross-flow fan 16 could be accommodated.

[Problem that the invention seeks to solve]

The above-mentioned conventional technology has the disadvantage that dew dehumidified from the air passing through the heat exchanger 14 during cooling operation may fall near the cut portion 15 of the heat exchanger 14, and that the cut portion 15 is larger than other portions. Although the area of the heat exchanger is small, the wind speed is the same as that of other parts, so the heat exchange is not as sufficient as in other parts, and the performance of the heat exchanger 14 is kept efficient (there is a possibility that it will not be used).

An object of the present invention is to make the amount of air passing through a heat exchanger approximately proportional to the width of the heat exchanger.

[Means for solving problems]

The above purpose is to install a decorative cover, heat exchanger, and cross-flow fan from the windward side, attach multiple louvers to the decorative cover, and when the air conditioner is operated, the louvers are rotated by the drive of the motor and the air flows out. This is achieved by opening and closing the inlet of the duct.

[Effect]

The louvers attached to the decorative cover have a wide louver located far away from the cross-flow fan, and a narrow louver near the cross-flow fan, so that when the louver rotates, the opening area of the side farther from the cross-flow fan will close ( The louvers are arranged to be wider, and when the air conditioner is operated, the connecting rods connecting each louver are driven by a motor, so they can be easily rotated to open the inlet.

This opening area is wide at the far end of the once-through fan, so even if the wind speed at the far end is slower than the once-through fan, the scenery passing through the heat exchanger can be selected to match each cross-sectional area of the heat exchanger, so the performance of the heat exchanger can be demonstrated uniformly. Can be done.

〔Example〕 Embodiments of the present invention will be described below with reference to FIGS. 1 to 3.

Reference numeral 1 denotes a heat exchanger, and the lower windward side forms a cutting part 2, and the cutting part 2 is placed on the windward side in an inclined manner. A cross-flow fan 3 is arranged in a portion where the cutting part 2 projects forward to reduce the depth. Since the cut portion 2 of the heat exchanger 1 is on the windward side, even if the dew condensed in the heat exchanger 1 falls, it will not be sucked into the once-through fan.

A decorative cover 4 has a structure that covers the heat exchanger 1 from the front, and a large looper 5, a small looper 6, and an upper louver 7 are attached to the suction side.

Each of these louvers is rotatably attached to the decorative cover 4 at fulcrums 5a, 6a and 7a, and a portion 5b of each louver
, 6b is a connecting rod 12, and 7b is a mechanism capable of interlocking with a cam 11 attached to the motor 10 by a connecting rod 12'. Although FIG. 1 shows the suction port in an open state, when the motor 10 is rotated in the direction A, the large looper 5, small looper 6, and upper looper 7 are moved to the positions shown by the dashed-dotted lines due to the above-mentioned interlocking mechanism. The suction port becomes closed. When the motor 10 is rotated in the direction B in this state, each louver is rotated to the position shown by the solid line in FIG. 3, and the suction port is formed again. In this way, when the air conditioner is not operated, the suction port is closed, and when the air conditioner starts operating, it is opened to provide ventilation 8. In addition, as shown in Fig. 2, the wind speed is proportionally controlled by using the arrow 8a at the deep upper part of the heat exchanger 1 and the small looper 6 at the cutting part 2 to slow it down as shown by the arrow 8b. The function of the heat exchanger 1 becomes almost uniform, and the entire heat exchanger 1 can be used effectively.

When the depth dimension of the product is not made thin, or when the cross section without the cutting part 2 is formed into a nearly rectangular shape, the number of small loopers 6 should be increased to make the downward wind speed the same as the others, or the width of the small looper 6 should be increased. It can be selected by widening the dimensions.

This structure has the advantage that when the aircraft is not in operation, the openings on the front and top surfaces are recessed, preventing dust from entering the aircraft, and the front face is flat, allowing for a simple front design.

Furthermore, it is common practice to change the air volume by changing the rotation speed of the cross-flow fan 3, or if the rotation speed is fast and a large air volume is required, the motor 10 is rotated more in the A direction to maximize the opening of each louver. By reducing ventilation resistance, the air volume can be easily increased and noise can be reduced.

〔Effect of the invention〕

According to the present invention, louvers with different width dimensions are attached to the inlet side of the decorative cover at desired positions, and the louvers are rotated by a motor to create a landscape that is proportional to the depth dimension of the heat exchanger. Since the heat exchanger can be easily controlled, the entire heat exchanger can be used effectively and efficiently.

[Brief explanation of drawings]

FIG. 1 is an enlarged view of a portion of the decorative cover shown in FIG. 2, FIG. 2 is a vertical sectional view of an air conditioner according to an embodiment of the present invention, and FIG.
FIG. 4 is a partial view showing the wind speed distribution in the figure, and FIG. 4 is a longitudinal sectional view of a conventional air conditioner. 1... Heat exchanger, 2... Cutting section, 3... Once-through fan, 4... Decorative cover, 5... Large looper, 6...
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Claims (1)

[Claims] 1. In an air conditioner equipped with an air suction port formed in a decorative cover, a heat exchanger placed on the leeward side of the suction port, and a once-through fan placed on the leeward side of the heat exchanger. , a plurality of louvers that open and close the suction port, a connecting rod connected to the louver, and a motor that opens and closes the suction port by driving the connecting rod and rotating the louver, the louver. An air conditioner characterized in that the width of the louver located farthest from the once-through fan is larger, and the width of the louver closer to the once-through fan is smaller.