KR20230163035A - Diffusion fan for cassette type air conditioner - Google Patents

Abstract

The present invention relates to a diffusion fan for a cassette air conditioner, comprising: a fan assembly fixed to the intake grill of the cassette air conditioner via a fixing means; And the fan assembly includes a fan hub in which a plurality of radially divided fan units are integrally combined, and a cap that finishes the upper and lower ends of the fan hub and secures the fan hub as one unit. It consists of a dividing block, spokes extending and protruding from the dividing blocks, and blades into which ends of the spokes are partially inserted. There are a plurality of concentric ring frames connected to the spokes to integrally fix each fan unit. It is characterized by being combined.

Description

Diffusion fan for cassette air conditioner {DIFFUSION FAN FOR CASSETTE TYPE AIR CONDITIONER}

The present invention relates to a diffusion fan for a cassette air conditioner. More specifically, it is easy to assemble by applying intuitive part shapes and minimal fastening means when assembling the wings, prevents the fan from being separated or separated after assembly, and ensures continuous use. This relates to a diffusion fan for a cassette air conditioner that improves the durability of the fan by dispersing the fatigue load generated on the fan.

In general, air conditioners are used indoors in buildings, schools, homes, etc. for cooling in the summer and heating in the winter.

Various types of air conditioners are used, such as ceiling type, stand type, wall-mounted type, and window type. Among these, ceiling type air conditioners, also called cassette air conditioners, are built into the ceiling, making it easy to secure space, providing excellent aesthetics, and the wind dispersing from the ceiling. Because it can be spread evenly indoors, it has recently been widely used as a means of indoor cooling and heating.

However, cassette air conditioners also have a structure in which wind is discharged through four-way vents, so users located in the direction of wind movement have no choice but to blow the wind directly when the air conditioner operates at a high wind speed, which can cause cooling or heating sickness. In addition, users located at a blind spot in the direction of wind movement may feel hot or cold due to relatively low cooling or heating efficiency, so the air cannot be distributed evenly in the room, causing discomfort to users due to the different temperatures felt in the same space. may occur.

Republic of Korea Patent Publication No. 10-1869926

The present invention was developed in consideration of the above problems, and the first object of the present invention is to provide a diffusion fan for a cassette air conditioner that disperses the wind blowing from the cassette air conditioner over a wide range to control the overall temperature of the room at a constant rate. It is provided.

The second purpose of the present invention is to provide a diffusion fan for a cassette air conditioner that allows users to easily understand the structure and is easy to assemble by applying intuitively shaped parts and minimal binding means during assembly.

The third object of the present invention is to provide a diffusion fan for a cassette air conditioner that prevents it from being easily broken by further forming a ring frame to evenly distribute the fatigue load generated on the fan due to long-term use.

A diffusion fan for a cassette air conditioner to achieve the above-described object includes a fan assembly fixed to the intake grill of the cassette air conditioner via a fixing means; And the fan assembly includes a fan hub in which a plurality of radially divided fan units are integrally combined, and a cap that finishes the upper and lower ends of the fan hub and secures the fan hub as one unit. It consists of a dividing block, spokes extending and protruding from the dividing blocks, and blades into which ends of the spokes are partially inserted. There are a plurality of concentric ring frames connected to the spokes to integrally fix each fan unit. It is characterized by being combined.

In addition, each ring frame is further formed with a fitting groove in which each spoke is seated at a predetermined interval on the ring-shaped frame body, and is fixedly coupled by a flange that secures the spoke seated in the fitting groove. .

In addition, the fan unit further includes blades that disperse wind directly from the cassette air conditioner to both sides, and a rotation guide plate formed at the end of the blades to rotate the blades by the wind blown, and on the upper surface of each blade. It is characterized by allowing the rotation of the fan unit to remain constant even when the angle of the wind blowing from the cassette air conditioner is changed through a plurality of dispersion plates combined at regular intervals.

In addition, a distribution plate insertion groove is further formed on the upper surface of the blade to facilitate attachment and separation of the distribution plate.

In addition, a block coupling portion is further formed on the side of the split block to reinforce the coupling between each fan unit in the fan hub.

In addition, the block coupling portion is characterized in that it is fitted by a coupling key protruding from one side of the split block and a coupling groove recessed from the other side of the split block.

According to the diffusion fan for a cassette air conditioner of the present invention, the wind blowing from the cassette air conditioner is evenly distributed throughout the room to maintain a constant indoor temperature.

In addition, when assembling the device, the structure can be easily understood by applying intuitively shaped parts and minimal fastening means, and the assembly is easy, making it convenient to use.

In addition, the durability of the fan is improved by distributing the fatigue load through the ring frame and allowing the fan to rotate consistently to prevent the fan from being damaged even when used for a long time.

1 is a perspective view showing a state in which the diffusion fan for a cassette air conditioner according to the present invention is installed in a cassette air conditioner.
Figure 2 is a perspective view of a diffusion fan for a cassette air conditioner according to the present invention.
Figure 3 is an exploded perspective view of a diffusion fan for a cassette air conditioner according to the present invention.
Figure 4 is a perspective view of the fan unit of the diffusion fan for a cassette air conditioner according to the present invention.
Figure 5 is a cross-sectional view of a diffusion fan for a cassette air conditioner according to the present invention.
Figure 6 is a perspective view of the fan unit of a diffusion fan for a cassette air conditioner according to another embodiment of the present invention.
Figure 7 is a perspective view of a diffusion fan for a cassette air conditioner according to another embodiment of the present invention.
Figure 8 is a perspective view of the fan unit of a diffusion fan for a cassette air conditioner according to another embodiment of the present invention.

The present invention is not limited to what will be described later and can be implemented in various forms, and the embodiments and drawings presented here are provided so that the characteristics of the present invention can be sufficiently conveyed to those skilled in the art.

Hereinafter, the present invention will be described in detail with reference to the attached drawings. The singular expressions used in this specification also include the plural unless specifically specified, and the components expressed as 'including' do not exclude the presence or addition of other components in addition to the components presented, and do not exclude any components. When expressing something that exists 'on' another component, it includes not only cases adjacent to other components, but also cases where other components exist between them.

In addition, if there is no separate definition of the technical term used, it can be understood as a meaning commonly used by those with knowledge in the technical field to which this invention belongs, and is commonly known in the content described later, so it is not significantly related to the invention and is not related to the invention. Descriptions of functions and configurations that may cause confusion by making the point unclear will be omitted.

Hereinafter, the diffusion fan for a cassette air conditioner according to the present invention will be described in detail along with the attached drawings.

Figure 1 is a perspective view showing a diffusion fan for a cassette air conditioner according to the present invention installed in a cassette air conditioner, Figure 2 is a perspective view of a diffusion fan for a cassette air conditioner according to the present invention, and Figure 3 is a diffusion fan for a cassette air conditioner according to the present invention. It is an exploded perspective view of the fan, Figure 4 is a perspective view of the fan unit of the diffusion fan for a cassette air conditioner according to the present invention, and Figure 5 is a cross-sectional view of the diffusion fan for a cassette air conditioner according to the present invention.

As shown in Figures 1 to 5, the diffusion fan for a cassette air conditioner of the present invention includes a fixing means (10) fixed to the suction grill (G) for coupling to the cassette air conditioner (A), and the fixing means (10) It includes a fan assembly (20) that rotates while hanging on the cassette air conditioner (400), wherein the fan assembly (20) includes a plurality of radially divided fan units (21), and the fan units (21) It consists of a plurality of caps 23 finished at the top and bottom.

The fixing means (10) is coupled to a fixing bracket (11) coupled to the upper part of the intake grill (G) inside the cassette air conditioner (A), and is coupled to the center of the fixing bracket (11) to move from the fixing bracket (11) to the bottom. It consists of a central axis 12 that extends.

The fixing bracket 11 is formed in the shape of a rectangular plate and has a hole formed in the center into which the central axis 12 is inserted and coupled. The central axis 12 is shaped like a circular bar and has a thread at the lower end. It has a formed structure.

Here, the installation of the fixing bracket (11) is performed by placing the assembly of the fixing bracket (11) and the central axis (12) on the upper part of the suction grill (G) separated from the cassette air conditioner (A), and the suction grill (G) The cap 23 is penetrated and coupled to the central axis 12 protruding from the lower portion of the cap 23 to maintain the coupling by tightly fixing the suction grill G between the fixing bracket 11 and the cap 23.

The fan assembly 20 is formed by integrally combining a plurality of fan units 21 radially divided about the central axis 12 and the dividing blocks 211 of the fan units 21 to form a cylindrical body. It consists of a fan hub 22 forming a cap 23 that is coupled to the upper and lower ends of the fan hub 22 and allows the fan hub 22 to rotate while binding.

The fan unit 21 includes a dividing block 211 in the shape of a divided cylinder, spokes 212 extending from the bottom of the dividing block 211 in the same radial direction as the dividing blocks 211, and the spokes. It is formed in a thin plate shape at the end of 212 and consists of blades 213 that disperse the wind blowing from the cassette air conditioner (A) to both sides.

The height of the split block 211 is formed to be more than twice the outer diameter of the split block 211 so that the wind blowing from the cassette air conditioner (A) can be transmitted to the blade 213, and the spokes 212 are divided into split blocks. At the bottom of (211), it is formed in various shapes such as polygons such as circles, triangles, squares, or streamlined shapes, and is made of lightweight aluminum, synthetic resin, etc. to facilitate rotation by the wind blowing from the cassette air conditioner (A) and to prevent damage even during long-term operation. It is preferable that it is made of a material with excellent properties and durability.

At this time, the split block 211 and spoke 212 assembly has a simple structure and is easy to visually distinguish between the upper and lower sides, so when assembling the fan assembly 20, all fan units 21 can be combined in a certain direction.

In addition, the fan assembly 20 is composed of three or more fan units 21 and are coupled to rotate the central axis 12 as a rotation axis while maintaining the cylindrical shape. When the fan unit 21 is damaged, Maintenance and repair are facilitated by replacing the damaged fan unit (21) with another fan unit (21).

The fan hub 22 is formed by combining a plurality of dividing blocks 211 to form a cylindrical body, and a hole is formed in the center to allow the central axis 12 to pass through, and at the top and bottom. The cap 23 is coupled to firmly maintain the coupling of the fan hub 22 and enable rotation.

The cap 23 includes a top cap 231 coupled to the top of the fan hub 22, a bottom cap 232 coupled to the bottom of the fan hub 22, the top cap 231, and the bottom cap. An internal bearing 233 in contact with the outer peripheral surface of the central axis 12 and the inner peripheral surface of the fan hub 22 inside the 232, and the fan hub 22 inside the upper cap 231 and the lower cap 232. It consists of an external bearing 234 that is in contact with the outer peripheral surface of the top cap 231 or the inner peripheral surface of the lower cap 232, thereby integrally fixing the split block 211 and allowing the fan hub 22 to rotate.

At this time, the top and bottom of the fan hub 22 are provided to facilitate coupling with the internal bearing 233 and external bearing 234 when the cap 23 is coupled, and the central axis 12 and the fan hub ( 22) or between the fan hub 22 and the cap 23, it is desirable to further form a bearing groove 221 to minimize friction.

In addition, the upper cap 231 has a hole formed in the center so that the central axis 12 can pass through, and the lower cap 232 has a hole not penetrated in the center and a thread is formed on the inner peripheral surface of the hole so that the central axis 12 can pass through the upper cap 231. By engaging the thread formed at the bottom of the shaft 12, the upper surface of the top cap 231 can be fixed in close contact with the suction grill (G) when the fan hub 22 and the cap 23 are assembled. make it possible

The fan assembly 20 coupled through the above process is fastened only by screwing between the central axis 12 and the bottom cap 232, so it does not require a separate fastening means such as a bolt, making assembly and disassembly easy.

In addition, a rotation guide plate 214 is formed at the end of the blade 213 to provide power to rotate the blade 213 through wind blown from the cassette air conditioner (A).

The rotation guide plate 214 is formed at an angle of more than 90 degrees bent upward from the blade 213, and is formed diagonally on a plane to facilitate providing power for rotation and has a structure that always rotates in the same direction.

At this time, if the length of the spoke 212 inserted inside the blade 213 is short, the blade 213 is easily separated due to centrifugal force during rotation, or when the blade 213 rotates, the cassette air conditioner (A) arranged in a square shape ) The wind blowing from the tuyere presses the blade 213, causing the blade 213 to descend, and the pressure applied when passing through the blind spot of the tuyere is removed, causing the blade 213 to rise due to the fatigue load caused by the repetitive motion. Since the spoke 212 may be bent or broken, it is desirable to insert the spoke 212 to occupy more than 2/3 of the total length of the blade 213 to prevent the spoke 212 and blade 213 from being damaged even when used for a long time.

In addition, a plurality of distribution plates 215 are coupled to the upper surface of the blade 213 at regular intervals to maintain the rotation of the fan unit 21 constant even when the angle of the wind blowing from the cassette air conditioner (A) is changed. make it possible

The dispersion plate 215, like the rotation guide plate 214, is formed at an angle bent upward of 90 degrees to the blade 213, and is formed diagonally on a plane, so that the angle of the air outlet of the cassette air conditioner (A) is changed to change the blade 213. Even when wind blows in the middle direction of (213), power is provided so that the blade (213) rotates smoothly.

In addition, a distribution plate insertion groove 216 is further formed on the upper surface of the blade 213 to allow the lower end of the distribution plate 215 to be fitted, thereby enabling attachment and separation of the distribution plate 215, thereby improving aesthetics. Alternatively, the quantity and location of the distribution plates 215 can be easily changed depending on the usage environment.

At this time, it is desirable to form one side of the distribution plate insertion groove 216 in a closed state to prevent the distribution plate 215 from protruding to one side when inserted and to prevent the distribution plate 215 from being separated during rotation.

In addition, the fan assembly 20 is formed by injection molding of a plastic material such as polyethylene (PE) or polypropylene (PP), so it has excellent durability, lightness, and economic efficiency.

Since the fan assembly 20 rotates by combining a plurality of fan units 21, the spokes 212 of each fan unit 21 are installed so that each fan unit 21 can maintain constant rotation and be stably fixed. A plurality of concentric ring frames 30 that are integrally fixed are combined.

The ring frame 30 is composed of a frame body 31, a fitting groove 32, and a flange 33. The frame body 31 is formed in a ring shape and has a lower portion of each radially arranged spoke 212. and the fitting groove 32 is formed in a shape corresponding to the shape of the spoke 212 so that the lower half of the spoke 212 in contact with the frame body 31 can be seated, and the flange 33 is formed in a shape corresponding to the shape of the upper half of the spoke 212 at the position where the fitting groove 32 is formed, and surrounds and secures the spoke 212 through fitting.

Here, it is desirable to install two or more ring frames 30 to fix and support the spokes 212 to distribute the fatigue load of the spokes 212 and improve the durability of the spokes 212.

Figure 6 is a perspective view of a fan unit of a diffusion fan for a cassette air conditioner according to another embodiment of the present invention.

As shown in Figure 6, the diffusion fan for a cassette air conditioner according to another embodiment of the present invention further forms a friction member 24 on one side or both sides of the dividing block 211 of the fan unit 21. Make sure to maintain a firm connection between each fan unit (21).

When the friction member 24 is formed on one side of the dividing block 211 using a material with excellent friction and elasticity, such as rubber or silicon, the friction member 24 of the other adjacent dividing block 211 is not formed. It is prevented from slipping easily by contact, and when friction members 24 are formed on both sides of the dividing block 211, it is made to contact the friction member 24 of another adjacent dividing block 211 to maintain coupling.

In addition, when multiple dividing blocks 211 are combined to form a cylindrical fan hub 22, the minute gaps that may occur between each dividing block 211 are filled with the friction member 24 to prevent vibration during rotation. You can prevent it from happening.

At this time, the thickness of the friction member 24 is preferably set to 0.1 to 0.2 mm to prevent problems in coupling between the fan hub 22 and the cap 23.

Figure 7 is a perspective view of a diffusion fan for a cassette air conditioner according to another embodiment of the present invention.

As shown in FIG. 7, the diffusion fan for a cassette air conditioner according to another embodiment of the present invention is a part consisting of only a split block 211 without spokes 212 and blades 213 in the fan unit 21. You can select the quantity of blades 213 using .

Therefore, the user can determine the number of blades 213 by replacing the split block 211 as needed, and thus can control the degree of dispersion of the wind blowing from the cassette air conditioner (A).

At this time, the fan hub 22, which is formed by combining the split block 211 on which the spokes 212 and the blades 213 are formed, and the split block 211 on which the spokes 212 and the blades 213 are not formed, has a weight It is desirable to alternately arrange each division block 211 so that its center is directed toward the central axis 12 to maintain balance during rotation.

Figure 8 is a perspective view of a fan unit of a diffusion fan for a cassette air conditioner according to another embodiment of the present invention.

As shown in Figure 8, the diffusion fan for a cassette air conditioner according to another embodiment of the present invention has a block coupling portion 25 formed on the side of the split block 211 of the fan unit 21 to connect each fan unit ( 21) It is constructed to reinforce the bond between the two.

The block coupling portion 25 includes a coupling key 251 formed in a shape that protrudes outward on one side of the dividing block 211, and a shape corresponding to the shape of the coupling key 251 on the other side of the dividing block 211. The coupling grooves 252, which are recessed in shape, are fitted and coupled to each other, making it easy to maintain the shape of the fan hub 22, which forms a cylindrical shape by combining a plurality of division blocks 211.

At this time, the shape of the block coupling portion 25 is such that the width becomes narrower as it approaches the side of the split block 211, so that the block coupling portion 25 is coupled up and down, and is not easily separated from the coupled state. However, the friction member 24 is formed on the side of the split block 211 except for the surface where the coupling key 251 or the coupling groove 252 is formed, so that the coupling key 251 and the coupling groove 252 are formed. It is desirable to avoid interfering with the mutual coupling between the two.

Since the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent the entire technical idea of the present invention, various equivalents can be substituted for them at the time of filing the present application. It should be understood that there may be variations.

100: Diffusion fan for cassette air conditioner
10: Fixing means 11: Fixing bracket 12: Central axis
20: Fan assembly 21: Fan unit 211: Split block
212: spoke 213: blade
214: rotation guide plate 215: distribution plate
216: Dispersion plate insertion groove
22: fan hub 221: bearing groove
23: cap 231: top cap
232: Bottom cap 233: Internal bearing
234: External bearing
24: Friction member
25: block coupling part 251: coupling key
252: Combination groove
30: Ring frame 31: Frame body 32: Fitting groove
33: Flange
A: Cassette air conditioner
G: Suction grille

Claims (6)

In the diffusion fan 100 for a cassette air conditioner,
A fan assembly (20) fixed to the suction grill (G) of the cassette air conditioner (A) via a fixing means (10); and
The fan assembly 20 includes a fan hub 22 in which a plurality of radially divided fan units 21 are integrally combined, and a cap 23 that finishes the upper and lower ends of the fan hub 22 and secures them as one body. ), including:
The fan unit 21 includes a split block 211 constituting the fan hub 22, spokes 212 extending and protruding from the split block 211, and ends of the spokes 212 that are partially inserted. It consists of a blade 213,
A diffusion fan for a cassette air conditioner, characterized in that a plurality of concentric ring frames (30) are connected to the spokes (212) and integrally fix each fan unit (21).
According to paragraph 1,
Each of the ring frames 30 is further formed with insertion grooves 32 in which each spoke 212 is seated at regular intervals on the ring-shaped frame body 31,
A diffusion fan for a cassette air conditioner, characterized in that it is fixedly coupled by a flange (33) that secures the spoke (212) seated in the fitting groove (32).
According to paragraph 1,
The fan unit 21 includes blades 213 that disperse wind directly from the cassette air conditioner (A) to both sides, and a blade 213 formed at the end of the blade 213 to rotate the blade 213 by the blowing wind. It further includes a guide plate 214,
Even if the angle of the wind blowing from the cassette air conditioner 200 is changed through a plurality of dispersion plates 215 coupled at regular intervals to the upper surface of each blade 213, the rotation of the fan unit 21 can be maintained constant. A diffusion fan for a cassette air conditioner, characterized in that it allows
According to paragraph 3,
A diffusion fan for a cassette air conditioner, characterized in that a distribution plate insertion groove 216 is further formed on the upper surface of the blade 213 to facilitate attachment and separation of the distribution plate 215.
According to paragraph 1,
A diffusion fan for a cassette air conditioner, characterized in that a block coupling portion (25) is further formed on the side of the dividing block (211) to reinforce the coupling between each fan unit (21) in the fan hub (22).
According to clause 5,
The block coupling portion 25 is fitted by a coupling key 251 protruding on one side of the split block 211 and a coupling groove 252 recessed on the other side of the split block 211. A diffusion fan for a cassette air conditioner, characterized in that.