KR102675069B1 - Blowing guide device for ceiling air conditioner - Google Patents

Abstract

According to one aspect of the present invention, it is installed on the lower surface of the ceiling-type air conditioner in an arrangement surrounding the intake port of the ceiling-type air conditioner, and each of the blowing air discharged from the lower part of the outlet of the ceiling-type air conditioner through the outlet is provided. A blowing guide device for a ceiling air conditioner that controls direction is provided, the blowing guide device for a ceiling air conditioner comprising: a pair of upper arms coupled to a lower surface of the ceiling air conditioner; a lower arm connected to each upper arm by a ball joint so that the angle can be adjusted back and forth, left and right; An angle fixing part that fixes the lower arm in an angle-adjusted state; It is coupled to the lower end of the lower arm so as to be spaced apart from the outlet formed on the lower surface of the ceiling air conditioner, and includes an air guide plate that guides the blowing air coming from the outlet at an angle adjusted by adjusting the angle of the lower arm. The air guide plate has a flat base portion directly connected to the bottom of the lower arm, is formed on the front of the base portion to face the discharge port at a reference position, and gradually converges toward the bottom from the front edge and the rear edge. It includes a depression formed in an arc-shaped or bow-shaped cross-section, and an inclined guide wing portion that extends obliquely downward from the front end of the depression and guides the blowing air coming out through the discharge port toward the room, wherein the depression guides the blowing air downward. A plurality of discharge slits are formed to discharge to.

Description

Blowing guide device for ceiling air conditioner {Blowing guide device for ceiling air conditioner}

The present invention relates to a blowing guide device for a ceiling-type air conditioner, which is installed at the wind outlet of a ceiling-type air conditioner and is used to guide the direction of the discharged wind in an intended direction.

Air conditioners are installed indoors in buildings such as offices, buildings, hospitals, houses, and schools for cooling or heating purposes. In recent years, due to various advantages such as space utilization, the demand for ceiling-type air conditioners, whose main body is installed embedded in the indoor ceiling, has increased rapidly.

Ceiling air conditioners are installed to be embedded in or suspended from the ceiling of a building. Such a ceiling-type air conditioner is configured to suck in indoor air through an intake port formed in the center of the bottom, cool the intake air by passing it through a heat exchanger, and then discharge the cooled air into the room through an outlet formed around the intake port. do.

However, these ceiling-type air conditioners discharge cooled air intensively within a certain area where the ceiling-type air conditioner is installed, making it difficult to evenly distribute the cooled air to people nearby and people far away. Because of this, a significant difference in indoor temperature occurs.

In response to this, an air guide device or a blowing guide device including a flat air guide plate has been proposed in the past to direct the wind from a ceiling-type air conditioner to the outskirts. Conventional technology distributes cooling air by installing an air guide plate directly below the air outlet, so that the discharged cooling air is blocked by the air guide plate and cannot go straight down, but spreads out. However, the conventional technology had a problem in that cooling air could not be supplied to the area near the ceiling-type air conditioner, and efficiency was greatly reduced. In response to this, it was considered to form an air discharge hole in the air guide plate, but the amount of cooling air discharged through the air discharge hole is inevitably limited, and all remaining air is directed back toward the ceiling after hitting the air guide plate, reducing efficiency. I had no choice but to fall. In addition, in the conventional technology, the air guide plate rotates in one direction around one hinge axis, which inevitably causes a decrease in the degree of freedom in distributing air to various areas of the room.

Registration number 10-2187380 (registration date November 30, 2020)

The problem to be solved by the present invention is to provide a blowing guide device for a ceiling-type air conditioner that distributes the air discharged from the ceiling-type air conditioner into various distributions and can control the indoor temperature distribution in various ways and easily as intended. .

According to one aspect of the present invention, it is installed on the lower surface of the ceiling-type air conditioner in an arrangement surrounding the inlet of the ceiling-type air conditioner, and each of the blowing air discharged from the lower part of the outlet of the ceiling-type air conditioner through the outlet is provided. A blowing guide device for a ceiling-type air conditioner that controls direction is provided, and the blowing guide device for a ceiling-type air conditioner includes: a pair of upper arms coupled to a lower surface of the ceiling-type air conditioner corresponding to each of the discharge ports; a pair of lower arms each positioned correspondingly to a lower part of each of the pair of upper arms; The lower arm is connected to the upper arm so that the angle can be adjusted back and forth, left and right, and the ball formed at the bottom of the upper arm, the first half ball housing integrally formed at the top of the lower arm, and the state are separated from the lower arm. Including a second half ball housing assembled to the first half ball housing to form a ball-shaped ball receiving space in which the ball is loosely accommodated, wherein the lower arm rotates with respect to the upper arm to adjust the angle forward and left and right. Ball joints that allow what is allowed; A bolt is fastened to the second half ball housing after penetrating the first half ball housing to avoid the ball, and tightening the bolt narrows the space between the first half ball housing and the second half ball housing. An angle fixing part that suppresses the rotation of the ball and fixes it in a state where the angle is adjusted by the lower arm; It is coupled to the lower end of the lower arm by a coupling unit, and includes an air guide plate that guides the blowing air coming from the discharge port at an angle adjusted by adjusting the angle of the lower arm, and the air guide plate is connected to the lower arm. A base portion in the form of a plate that is directly connected to the bottom of the arm but is horizontal at the reference position, is formed concavely at the front of the base portion to have an arc-shaped or bow-shaped cross-section with the front edge positioned at the highest point, and lies below the discharge port at the reference position. It includes a recessed portion and an inclined guide wing portion that extends obliquely downward from the front end of the recessed portion and guides the blowing air discharged through the discharge port toward the room, and the recessed portion includes a plurality of discharge slits that discharge the blowing air downward. are formed, and the coupling unit has a screw hole formed at a certain height at the bottom of the lower arm, a through hole formed in the base, a male thread passes through the through hole and is fastened to the screw hole, and the head portion is connected to the screw hole. It includes a fixing bolt in close contact with the lower surface of the base portion, and an arc-shaped curved surface is formed at the bottom of the lower arm, and a groove-shaped portion including an arc-shaped sliding groove is formed in the base portion to enable curved sliding with respect to the arc-shaped curved surface, The through hole is formed in the form of a slit along the arc shape of the arc-shaped sliding groove, and in a state where the head of the fixing bolt is loosely fastened so as not to come into close contact with the lower surface of the base portion, the inner curved surface of the arc-shaped sliding groove is the arc-shaped curved surface. It slides along to change the angle of the air guide plate, and the fixing bolt is fastened so that the head of the fixing bolt is in close contact with the lower surface of the base while the angle of the air guide plate is changed, and the air guide The angle of the plate is fixed.
The blowing guide device for a ceiling-type air conditioner includes an opening and closing plate guide portion formed long in the left and right directions on both sides of the front and rear of the depression to adjust the opening and closing amount of the discharge slits, and a sliding movement along the opening and closing plate guide portion to open and close the discharge slits. It further includes at least one opening and closing plate that partially blocks the opening and closing plate, and the opening and closing plate is formed in a cross-sectional shape accommodated in the cross-sectional shape of the depression so that it can slide left and right within the depression.
The discharge slits include a left group of discharge slits, a right group of discharge slits, and a center group of discharge slits, and the opening and closing plate fully or partially opens and closes the left group, the right group, and the center group of slits. It includes two opening and closing plates installed between the slits of the left group and the slits of the central group and between the slits of the right group and the slits of the central group.

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The blowing guide device for a ceiling-type air conditioner according to the present invention has the advantage of distributing the air discharged from the ceiling-type air conditioner into various distributions, so that the indoor temperature distribution can be variously and easily adjusted according to intention.

Other advantages and effects of the present invention can be easily understood from the description of the examples below.

Figure 1 is a perspective view showing a state in which the blowing guide device for a ceiling-type air conditioner according to an embodiment of the present invention is applied to a ceiling-type air conditioner.
Figure 2 is a partially enlarged perspective view showing a state in which the blowing guide device for a ceiling-type air conditioner according to an embodiment of the present invention is applied to a ceiling-type air conditioner.
Figure 3 is a perspective view showing a blowing guide device for a ceiling-type air conditioner according to an embodiment of the present invention.
Figure 4 is an exploded perspective view showing a blowing guide device for a ceiling-type air conditioner according to an embodiment of the present invention.
Figure 5 is a cross-sectional view showing the blowing guide device for a ceiling-type air conditioner according to an embodiment of the present invention from a reference position, and is intentionally shown so that the discharge slit is visible.
Figure 6 is a cross-sectional view showing a state in which the angle of the air guide plate is adjusted by rotating the lower arm at a certain angle from the reference position shown in Figure 5.
Figure 7 is a plan view showing a blowing guide device for a ceiling-type air conditioner according to an embodiment of the present invention.
Figure 8 is a diagram for explaining another embodiment of the present invention.
9 and 10 are drawings for explaining another embodiment of the present invention.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. The invention may be implemented in many different forms and is not limited to the embodiments described herein. In describing the present invention, if it is determined that related known functions may unnecessarily obscure the gist of the present invention as they are obvious to those skilled in the art, the detailed description thereof will be omitted.

Referring to Figures 1 and 2, you can see the ceiling air conditioner 10 and the blowing guide device 100 for the ceiling air conditioner installed on the ceiling air conditioner 10.

In the ceiling-type air conditioner 10, the upper part is embedded in the ceiling and the lower surface is exposed to the outside of the ceiling. In addition, a substantially square or rectangular suction port 12 is formed in the center of the lower surface 11 of the ceiling air conditioner 10, and four discharge ports 13 are formed around the suction port 12. The ceiling air conditioner 10 sucks indoor air through the intake port 12, cools the sucked air by passing it through a heat exchanger (not shown), and then cools the intake air through four air inlets formed around the intake port 12. Cooled air, that is, cool wind, is discharged into the room through the discharge port 13. The four discharge ports 13 are formed in a substantially rectangular shape parallel to the corners of the suction port 12.

Four blowing guide devices 100 for a ceiling-type air conditioner are installed at 90-degree intervals on the lower surface of the ceiling-type air conditioner 10 in an arrangement surrounding the inlet 12 of the ceiling-type air conditioner 10, and each It is configured to adjust the wind direction of blowing air (i.e., wind) discharged through the outlet 13 from the lower part of the outlet 13 of the ceiling air conditioner 10 and guide the wind in the adjusted direction.

As shown in FIGS. 1 to 7, the ceiling air conditioner blowing guide device 100 includes a pair of upper arms 110 coupled to the lower surface 11 of the ceiling air conditioner 10 at the top, and , a lower arm 130 that is connected to each upper arm 110 by a ball joint so that the angle can be adjusted back and forth, left and right, and an angle fixing part 150 that fixes the lower arm 130 in an angle-adjusted state, It is coupled to the lower end of the lower arm 130 and is arranged to be spaced apart vertically from the discharge port 13 formed on the lower surface of the ceiling air conditioner 10. By adjusting the angle of the lower arm 130, the discharge port ( It includes an air guide plate 170 that guides the wind coming from 13) at a controlled blowing angle.

The air guide plate 170 can be placed in a horizontal position at a reference position facing the discharge port 13, and by adjusting the front, left, and right angles of the lower arm 130 with respect to the upper arm 110, the air guide plate 170 can be placed in a horizontal position. The angle of (13) can be adjusted forward and backward, left and right, and even three-dimensionally. The air guide plate 170 includes a flat base portion 171 directly connected to the lower end of the lower arm 130, and a base portion 171 located in front of the base portion 171 to face the discharge port 13 at the reference position. A depression 172 is formed in an arc-shaped or bow-shaped cross-section to gradually converge toward the bottom at both edges, that is, the front edge and the rear edge, and is formed in front of the depression 172 and extends obliquely downward. It includes an inclined guide wing portion 173 that guides the wind coming out through the discharge port 13 toward the room.

At this time, a plurality of discharge slits (S) for sending wind downward are formed in the depression 172 in an arc or bow shape along the cross-sectional shape of the depression 172. At this time, it is preferable that the plurality of discharge slits (S) are formed to be slightly biased forward within the depression 172 in consideration of wind direction.

A significant amount of wind, i.e., cooling air, coming out of the discharge port 13 is collected in the depression 172 and then flows downward through a plurality of discharge slits S formed toward the front at the bottom of the depression 172. Since it is sent downward, the amount of wind lost after coming out through the discharge port 13 and hitting the discharge slit formed in the air guide plate can be greatly reduced, contributing to increasing cooling efficiency. The plurality of discharge slits (S) are grouped into three groups, namely, the left discharge slit group (L), the right discharge slit group (R), and the central discharge slit group (M).

In addition, at the rear end of the base portion 171, a windbreak portion 174 extending inclined upward may be further formed to prevent wind from flowing back toward the rear, that is, in a direction close to the center of the ceiling-type air conditioner, and to send it back to the front. there is.

For example, the angle adjustment of the air guide plate 170 by rotating the lower arm 130 from the position shown in FIG. 5 to the position shown in FIG. 6 and rotating in the opposite direction is called front-back angle adjustment. The angle adjustment range may be approximately 90 degrees or more, and may further exceed the 90 degree range.

In the past, it was only possible to adjust the front and rear angle of the air guide plate 170, but the present invention uses a ball joint, so it not only adjusts the front and rear angle of the air guide plate 170, but also adjusts the air guide plate in all directions of 360 degrees forward, left, and right. Angle adjustment of (170) is possible.

At the reference position shown in FIGS. 1, 2, 3, and 5, the air guide plate 170 is positioned approximately parallel to the ceiling air conditioner 10 in a horizontal state. At this reference position, the cooled air coming from the outlet 13 of the ceiling air conditioner can be sent to the farthest area of the room. At this time, since the depression 172 and the discharge slits S formed in the depression 172 along the cross-sectional trace of the depression 172 are located directly below the discharge port 13, The discharge of wind through the discharge slits (S) and the resulting blowing are also the largest. This greatly improves the problem of air not blowing to people located directly under or around the ceiling air conditioner at the standard location.

In the cross section shown in FIG. 6, the air guide plate 170 is rotated at a certain angle from the reference position and its angle is adjusted. In this angle-adjusted state, the front end of the air guide plate 170 is a ceiling-type air conditioner. It is closer to the center of (10; see Figures 1 and 2) and is lowered. Compared to the reference position, this location has a large amount of wind, which is cooling air coming from the discharge port (13; see Figures 1 and 2) of the ceiling air conditioner, in the middle position between the installation location of the ceiling air conditioner and the location outside the room. can be concentrated, and compared to the reference position, this position has a relatively small area of the area where the discharge slits (S) face the discharge port (13; see FIGS. 1 and 3), so the ceiling air conditioner (10) ) It is possible to reduce the amount of wind transmitted to people around you.

As above, by adjusting the front and rear angle of the air guide plate 170, the amount of wind blowing away through the inclined guide wing part 173 and the amount of wind discharged through the discharge slit (S) can be simultaneously adjusted, It can greatly contribute to reducing the temperature difference felt by residents.

Meanwhile, the upper arm 110 is a fastening flange portion that allows it to be coupled to the lower surface 11 of the ceiling air conditioner 10 by a fastener such as a bolt while facing the lower surface of the ceiling air conditioner 11. (112) is provided at the top. Additionally, a ball 114 forming part of a ball joint is formed at the bottom of the upper arm 110.

Additionally, a pair of half ball housings 131a and 131b are provided at the upper end of the lower arm 130 and, when combined with each other, form a ball housing 131 that accommodates the ball 114. The ball 114 is loosely received between the pair of half ball housings 131a and 131b, allowing rotation of the ball 114 within the ball housing 131, and this rotation causes the upper arm ( The front, rear, left and right angles of the lower arm 130 relative to 110) can be adjusted. At this time, one first half ball housing (131a) of the pair of half ball housings is formed integrally with the upper part of the lower arm (130), and the remaining second half ball housing (131b) is formed with the lower arm (130). It is assembled to the first half ball housing (131a) in a separated state.

The angle fixing part 150 is configured to further narrow the gap between the ball 114 and the ball housing 130 between the pair of half ball housings 131a and 131b to suppress rotation of the ball 114. In this embodiment, the angle fixing part 150 may include a bolt that penetrates the first half ball housing 131a and is fastened to the second half ball housing 131b, avoiding the ball 114.

In order to couple the air guide plate 170 to the lower end of the lower arm 130, a coupling unit is provided. The coupling unit includes a screw hole 133 formed at a certain height at the bottom of the lower arm 130, a through hole 177 formed in the base portion 171 of the air guide plate 170, and a male thread portion of the through hole. It passes through 177 and is fastened to the screw hole 133, and includes a fixing bolt 180 whose head is in close contact with the lower surface of the base portion 171.

According to this embodiment, the coupling unit can couple and fix the air guide plate 170 to the lower arm 130 with the angle of the air guide plate 170 further changed. A groove forming portion 179 including an arc-shaped curved surface (A) formed at the bottom of the arm 130 and an arc-shaped sliding groove (B) formed on the base portion 171 to enable curved sliding with respect to the arc-shaped curved surface (A). This is achieved by including. The through hole 177 is formed in a slit shape along the arc shape of the arc-shaped sliding groove (B). The inner curved surface of the arc-shaped sliding groove (B) slides along the arc-shaped curved surface (A), so that the angle of the air guide plate 170 can be changed, and with the angle changed, the fixing bolt 180 slides in an arc shape. The air guide plate 170 can be fixed by passing through the slit-shaped through hole 177 formed in the groove B and fastened to the screw hole 133.

It is also possible to adjust the angle of the air guide plate 170 by adjusting the angle of the lower arm 130 relative to the upper arm 110, but by loosening the fixing bolt 180 and adjusting the angle of the lower arm 130 with respect to the upper arm 110, the inner curved surface of the arc-shaped sliding groove B After changing the angle of the air guide plate 170 to slide along this arc-shaped curved surface A, fixing the air guide plate 170 by fastening the fixing bolt 180 makes it easier to adjust the angle of the air guide plate 170. It is possible to change and fix it.

As above, the forward, left, and right angles of the air guide plate 170 are adjusted using a ball joint, and in addition, the forward and backward angles can be adjusted through the cooperation of the arc-shaped curved surface (A) and the curved sliding groove (B). Various angles, positions, and shapes of the air guide plate 170 can be changed, which greatly contributes to increasing the degree of freedom in adjusting the blowing direction guide.

According to an alternative embodiment, in order to control the opening and closing amount of the discharge slits (S), an opening and closing plate guide part (G) formed long in the left and right directions on both front and rear sides of the depression 172, and the opening and closing plate guide part It further includes opening and closing plates (190a, 190b) that slide along (G) and partially block the discharge slits (S). The opening and closing plates 190a and 190b may have a cross-sectional shape accommodated in the cross-sectional shape of the depression 172 so that they can slide left and right within the depression 172. In this embodiment, the discharge slits (S) include a left group of discharge slits (S), a right group of discharge slits (S), and a center group of discharge slits (S), and two opening and closing plates (190a, 190b) is installed. The two opening and closing plates (190a, 190b) may be positioned to open all three groups (L, R, M) of discharge slits (S), or may be arranged to block two groups of discharge slits (S). , may be arranged to block a group of discharge slits (S). In addition, it is possible to more finely control the wind emissions by blocking only some of the discharge slits (S) in one group of the opening and closing plates (190a, 190b).

9 and 10 are drawings for explaining another embodiment of the present invention.

9 and 10, the blowing guide device 100 for an air conditioner of this embodiment, like the previous embodiment, includes a pair of upper arms 110 coupled to the lower surface 11 of the ceiling air conditioner at the top. ) and a lower arm 130 that is connected to each upper arm 110 by a ball joint so that the angle can be adjusted back and forth, left and right, and an angle fixing part 150 that fixes the lower arm 130 in an adjusted angle. It is coupled to the lower end of the lower arm 130 and is arranged to be spaced apart vertically from the discharge port 13 formed on the lower surface of the ceiling air conditioner 10. By adjusting the angle of the lower arm 130, the It includes an air guide plate 170 that guides the wind coming out of the discharge port 13 at an adjusted blowing angle.

The air guide plate 170 can be placed in a horizontal position at a reference position facing the discharge port 13, and by adjusting the front, left, and right angles of the lower arm 130 with respect to the upper arm 110, the air guide plate 170 can be placed in a horizontal position. The angle of (13) can be adjusted forward and backward, left and right, and even three-dimensionally. The air guide plate 170 includes a flat base portion 171 directly connected to the lower end of the lower arm 130, and a base portion 171 located in front of the base portion 171 to face the discharge port 13 at the reference position. A depression 172 is formed in an arc-shaped or bow-shaped cross-section to gradually converge toward the bottom at both edges, that is, the front edge and the rear edge, and is formed in front of the depression 172 and extends obliquely downward. It includes an inclined guide wing portion 173 that guides the wind coming out through the discharge port 13 toward the room.

At this time, a plurality of discharge slits (S) for sending wind downward are formed in the depression 172 in an arc or bow shape along the cross-sectional shape of the depression 172.

A significant amount of wind, i.e., cooling air, coming out of the discharge port 13 is collected in the depression 172 and then flows downward through a plurality of discharge slits S formed toward the front at the bottom of the depression 172. send it down

In addition, at the rear end of the base portion 171, a windbreak portion 174 extending inclined upward may be further formed to prevent wind from flowing back toward the rear, that is, in a direction close to the center of the ceiling-type air conditioner, and to send it back to the front. there is. Unlike the previous embodiment, the center of the base portion 171 directly connected to the lower arm 130 is located approximately at the center of the width of the air guide plate 170. In order to form a structure directly connected to the lower arm 130 at approximately the center of the width of the air guide plate 170, it is preferable that a balancing portion is additionally formed between the base portion 171 and the windshield portion 174.

Since the remaining configuration is almost the same or similar to the previous embodiments, further description is omitted.

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications and variations will be possible to those skilled in the art without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of the present invention.

10: Ceiling air conditioner 13: Discharge port
110: upper arm 130: lower arm
150: angle fixing part 170: air guide plate
171: base part 172: recessed part
173: Inclined guide wing S: Slit

Claims (3)

Ceiling-type air conditioners are installed on the lower surface of the ceiling-type air conditioner in an arrangement surrounding the inlet of the ceiling-type air conditioner, each of which controls the direction of blowing air discharged from the bottom of the outlet of the ceiling-type air conditioner through the outlet. In the blowing guide device,
a pair of upper arms coupled to a lower surface of the ceiling air conditioner corresponding to each of the discharge ports;
a pair of lower arms each positioned correspondingly to a lower part of each of the pair of upper arms;
The lower arm is connected to the upper arm so that the angle can be adjusted forward, backward, left, and right, and the ball formed at the bottom of the upper arm, the first half ball housing integrally formed at the top of the lower arm, and the state are separated from the lower arm. A second half ball housing is assembled to the first half ball housing to form a ball-shaped ball receiving space in which the ball is loosely accommodated, and the lower arm rotates with respect to the upper arm to adjust the angle forward and backward and left and right. Ball joints that allow what is allowed;
A bolt is fastened to the second half ball housing after penetrating the first half ball housing to avoid the ball, and tightening the bolt narrows the space between the first half ball housing and the second half ball housing. An angle fixing part that suppresses the rotation of the ball and fixes it in an adjusted angle with the lower arm; and
It is coupled to the lower end of the lower arm by a coupling unit, and includes an air guide plate that guides the blowing air coming from the discharge port at an angle adjusted by adjusting the angle of the lower arm,
The air guide plate is formed concavely in front of the base portion to have a flat base portion that is directly connected to the lower end of the lower arm and is horizontal at the reference position, and an arc-shaped or bow-shaped cross-section with the front edge positioned at the highest point, and the reference plate It includes a depression placed below the discharge port at a position, and an inclined guide wing portion extending obliquely downward from a front end of the depression and guiding the blowing air discharged through the discharge port toward the room,
A plurality of discharge slits are formed in the depression to discharge blowing air downward,
The coupling unit includes a screw hole formed at a certain height at the bottom of the lower arm, a through hole formed in the base, a male screw portion passes through the through hole and is fastened to the screw hole, and a head portion is formed on the lower surface of the base. It includes a fixing bolt that is in close contact with the
An arc-shaped curved surface is formed at the bottom of the lower arm,
A groove-shaped portion including an arc-shaped sliding groove is formed in the base portion to enable curved sliding on the arc-shaped curved surface,
The through hole is formed in the form of a slit along the arc shape of the arc-shaped sliding groove,
In a state where the head of the fixing bolt is loosely fastened without being in close contact with the lower surface of the base, the inner curved surface of the arc-shaped sliding groove slides along the arc-shaped curved surface, so that the angle of the air guide plate changes,
A blower for a ceiling-type air conditioner, wherein the fixing bolt is fastened so that the head of the fixing bolt is in close contact with the lower surface of the base while the angle of the air guide plate is changed, so that the angle of the air guide plate is fixed. Guide device. According to paragraph 1,
In order to control the amount of opening and closing of the discharge slits, an opening and closing plate guide part formed long in the left and right directions on both sides of the front and rear of the depression, and one or more opening and closing plates that slide along the opening and closing plate guide part to partially block the discharge slits. Further comprising, the opening and closing plate is formed in a cross-sectional shape accommodated in the cross-sectional shape of the depression so that it can slide left and right within the depression. According to paragraph 2,
The discharge slits include a left group of discharge slits, a right group of discharge slits, and a center group of discharge slits, and the opening and closing plate fully or partially opens and closes the left group, the right group, and the center group of slits. Blower for a ceiling-type air conditioner, comprising two opening and closing plates installed between the slits of the left group and the slits of the center group and between the slits of the right group and the slits of the center group to enable Guide device.