KR100221475B1 - Spraying device of airconditioner - Google Patents

Abstract

The present invention is to reduce the noise caused by the rattling of the blade 242 in the air conditioner injector 24, to facilitate the operation for adjusting the angle of the blade 242, and to prevent the fall of the shaft and the pin to improve durability For reinforcement, a skirt 242g is formed along the inner circumference of the slot 242f formed at an angle to the bent piece 242d of each of the blades 242, and a rivet 244b attached to the rotating plate 244 is provided. An injection device 24 inserted into a slot 242f surrounded by the skirt 242g is provided. A bushing 244c formed of a resin having a high buffering property and a small sliding friction coefficient of the surface may be fitted around the rivet 244b, and instead of the skirt 242g being formed on the inner circumference of the slot 242f. A packing 242h made of resin having a high buffering property and a small slip coefficient of surface may be fitted. In addition, the dome-shaped member 241 is a solid upper member 241e made of a resin with high cushioning and sound absorption, and a lower plate 241f attached to an upper portion of the blade 242 to support the upper member 241e. Include.

Description

Injector for Air Conditioning System

[Field of Invention]

The present invention relates to an injector for an air conditioner, and in particular, to smoothly operate by improving the shape of an operation part in an injector configured to arbitrarily adjust an angle in order to control the shape of a descent in the descending air type air conditioner. Of course, the present invention relates to an air conditioner injector capable of reducing noise caused by blade shaking.

[Private Technology]

ftung, Heizung und W

rmer

ckgewinnung; Heating and Ventilating system with heat recovery) 등과 같은 공기조화장치는 천장에 천공된 구멍속에 설치하기도 한다. 이렇게 배기구가 천장에 설치되는 경우에는 조화공기가 급기구로부터 사람들이 활동하는 바닥까지 수직강하류의 형태로 직접 송풍되므로, 측면으로부터 급기되어 사람들의 활동공간에 도달하기도 전에 천장으로 상승되어 버리는 벽걸이형의 공기조화장치보다 체감효율이 훨씬 우수하다.In general, air conditioners are classified into independent operation and central supply according to the air supply method. The centrally supplied air conditioner installs a conditioner air source including a heat exchange unit on the roof of a building or in a separate space and supplies the conditioner air through a supply pipe leading to each room to be supplied. The air supply of such a centrally supplied air conditioner is usually installed on the ceiling. In addition, the self-acting air conditioner is an integrated air conditioner installed so that the air supply port is exposed to the indoor side and the exhaust port, the intake port, and the heat exchange unit are exposed to the indoor side for each room requiring air conditioning. Such self-contained air conditioners are typically installed in holes drilled in windows or walls, but they are thermally regenerated air conditioners (LHW; LH) of multinational company headquartered in Liechtenstein.

ftung, Heizung und W

rmer

ckgewinnung; Air conditioning devices such as heating and ventilating system with heat recovery are often installed in perforated holes in the ceiling. In this case, when the exhaust port is installed on the ceiling, the conditioned air is directly blown from the air supply to the floor where people are active, so that the air is blown up from the side to rise to the ceiling before reaching the activity area. The haptic efficiency is much better than that of the air conditioner.

However, even in the case of the above-mentioned descending air supply type, a diffuser, a nozzle, or an injector may be used so that the airflow supplied through the air supply installed downward in the ceiling reaches the active space of the people. It is necessary to control the pattern of air-flow by means of suitable flow guidance means, including).

Therefore, in the above-described air-conditioning apparatus of the arc firing company, as shown in FIG. 1, a proper flow guide means is provided. The air conditioner shown in FIG. 1 includes a source of air conditioner 10 exposed on the roof and an airflow guide unit 20 exposed under the ceiling. The harmonized air supply source 10 includes an external air suction means including an external air protection grill 11, an external air filter 12, and an external air damper 13, between the air sucked through the external air suction means and the exhaust discharged from the room. And a blower 15 for pressurizing the intake air and accelerating the flow thereof. In addition, the airflow guide unit 20 passes through an exhaust inlet 21 through which air discharged from the inside is introduced, a diffuser 22 for diffusing outside air blown from the blower 15, and such a diffuser 22. A heating device 23 for heating one outside air, a domed member 241 for guiding the air flow passing through the heating device 23 in the form of a vertical annular descent and a vertical annular steel formed by such a domed member 241. And an injector 24 comprising a plurality of blades 242 that collect the downstream into the center of the annulus while applying rotational force and a nozzle 243 that forms an outlet for ejecting such airflow.

A detailed configuration of a conventional injector 24, which is incorporated herein by reference, may be referred to the publication of European Patent EP 0 104 435 to Hoval Interliz AG of Liechtenstein, which is shown in FIG. 7 of the drawings. To FIG. 10. The injector 24 includes a domed member 241, a rotating plate 244 rotatably fitted around a shaft 241c welded to the lower plate 241b of the domed member 241, and such a rotating plate 244. ) A plurality of blades 242 disposed below, a support plate 245 disposed under the blades 242, and a nozzle 243 disposed under the support plate 245. Each blade 242 comprises a body 242a which is a rectangular flat plate, bearings 242b and 242c being provided at both width ends near the longitudinal outer end of the body 242a. A bent piece 242d is formed at an upper width end portion near the inner end of the longitudinal direction of the main body 242a, and a slot (a slot: 242e) is formed obliquely at the bent piece 242d. The main body 242a passes through the holes of the bearings 242b and 242c, and one end thereof has a plurality of holes 241g bored at regular intervals at the edge of the lower plate 241b of the domed member 241. The end of the other end is pivotally fixed by a shaft 246 fitted into a hole drilled in the support plate 245. In addition, a pin 244a welded to the rotating plate 244 is inserted into the slot 242e formed in the bent piece 242d, and the pin 244a may slide freely in the slot 242e.

Injector 24 configured as described above can adjust the angle of the body 242a of the blade 242 by rotating the rotating plate 244 by a suitable rotation driving means (not shown), thereby changing the form of airflow It can be controlled appropriately.

However, in the blade 242 of the conventional injector 24 as described above, since the slot 242e of the bent piece 242d is formed by a simple punching process, the depth of the slot 242e is only as large as the thickness of the plate. In addition, the cutting edge is sharp. Therefore, even if the clearance is narrowed by limiting the tolerance between the width of the slot 242e and the diameter of the pin 244a, it is not possible to avoid rattle of the blade 242. In addition, since the slide of the pin 244a in the slot 242e is not smooth, the operation for adjusting the angle of the blade 242 is not smooth.

In addition, the shaft 241c welded to the lower plate 241b of the dome-shaped member 241 and the pin 244a welded to the rotating plate 244 may fall off due to breakage of the welding site due to long-term fatigue load. There is.

In addition, as shown in Fig. 7, the conventional dome-shaped member 241 is composed of an upper plate 241a formed by pressing a metal plate in a round shape and a lower plate 241b which is a circular metal flat plate, which is bent to the lower plate 241b. At least three legs 241d are provided for fixing the upper plate 241a.

A high pressure high velocity airflow collides or rubs on the top plate 241a of the conventional domed member 241 configured as described above, and the top plate 241a generates noise while vibrating. In addition, the generated noise is further amplified by resonating in an empty space between the upper plate 241a and the lower plate 241b.

Therefore, the object of the present invention is to reduce the noise caused by the rattling of the blade, to smooth the operation for adjusting the angle of the blade, to prevent the falling off of the shaft and pin, to enhance durability, and to not vibrate even when colliding with the airflow or rubbing. The intention is to provide an injector that can absorb noise.

1 is a perspective view showing a part of the casing cut out to explain the arrangement of the components of the air conditioner,

2 is an exploded perspective view showing a first embodiment of the injector according to the present invention for use in the air conditioner shown in FIG.

3 is a partial front cross-sectional view showing the assembled state of the blade of the injector shown in FIG.

4 is for explaining the configuration of the blade shown in FIG. 3, a part of the enlarged perspective view cut out,

5 is a front sectional view of the domed member of the injector shown in FIG.

FIG. 6 is a partial sectional sectional view showing the assembled state of the blades of the injector according to the second embodiment of the present invention for use in the air conditioner shown in FIG.

7 is an exploded perspective view showing a conventional injector used in the air conditioner shown in FIG.

8 is a partial sectional view showing the assembled state of the blade of the injector shown in FIG.

FIG. 9 is a view for explaining the configuration of the blade shown in FIG.

FIG. 10 is a sectional front view of the domed member of the injector shown in FIG.

* Explanation of symbols for main parts of the drawings

10: Harmonized air supply source 11: Outdoor protection grill

12: air filter 13: air damper

14 heat exchanger 15 blower

20: air flow guide unit 21: exhaust inlet

22 diffusion device 23 heating device

24: injector 241: domed member

241a: top plate 241b: bottom plate

241c: Axis 241d: Leg

241e: upper member 241f: lower plate

241g: hole 241h: rivet

241i: upper head 241j: lower head

241k: protrusion 241l: recess

242: blade 242a: main body

242b, 242c: bearing support 242d: bending piece

242e: slot 242f: slot

242g: skirt 242h: transition

242i: Packing 243: Nozzle

244: rotating plate 244a: pin

244b: rivet 244c: bushing

244d: upper head 244e: lower head

245: support plate 246: shaft

[Overview of invention]

According to the present invention for achieving the above object, in the air conditioner installed in the ceiling with the air supply source and air flow guide unit to supply the air in the form of vertical descent from the air supply to the floor where people are active In the injector used, a dome-shaped member for guiding air supply in the form of a vertical annular descent and a plurality of blades for collecting the vertical annular descent formed by the dome-shaped member to the central portion of the annular while applying a rotational force and ejecting such air flow. And a nozzle forming an outlet, and between the lower plate of the domed member and the blades, a rotating plate which rotates about an axis attached to the center of the lower plate, wherein each blade is provided near the one side end portion. Line drawing is fixed between the lower plate of the domed member and the support plate on the nozzle, Each blade includes a bent piece formed near the other side end portion, a slot formed obliquely to the bent piece, and a skirt extending from an inner circumference of the slot, wherein the rotating plate includes a cylindrical pin to be inserted into the slot. The dome-shaped member is provided with an air conditioner injector, characterized in that it comprises a solid upper member made of a resin with high cushioning and sound absorption, and a lower plate supporting the upper member.

In addition, according to this invention, a bushing can be fitted around the pin.

In addition, according to the present invention, the bushing may be formed of a resin having a high buffering property and a low coefficient of sliding friction on the surface.

In addition, according to the present invention, instead of the skirt being formed on the inner circumference of the slot, a packing made of a resin having a high buffering property and a low coefficient of sliding friction on the surface can be fitted.

In addition, according to the present invention, the pins provided on the rotating plate may be formed of rivets provided with two heads respectively abutting on both sides of the rotating plate.

EXAMPLE

Now, with reference to the accompanying drawings, it will be described in detail embodiments of the injector for an air conditioner according to the present invention.

Example 1

1 is a perspective view showing a part of the casing cut out to explain the arrangement relationship of the components of the air conditioner, Figure 2 is an exploded perspective view showing a first embodiment of the injector according to the present invention 3 is a partial front cross-sectional view showing the assembled state of the blade of the injector shown in FIG. 2, and FIG. 4 is for explaining the configuration of the blade of the injector shown in FIG. 5 is a front sectional view of the domed member of the injector shown in FIG.

Since the air conditioner shown in FIG. 1 to which the injector shown in FIGS. In addition, the same or corresponding reference numerals are assigned to the same or corresponding components in the drawings.

According to the first embodiment of the present invention, the bent piece 242d of the blade 242 of the injector 24 is formed with a slot 242f oblique to a common plane other than the main body 242e of the blade 242. . However, unlike the conventional slot 242e, which was formed by cutting a part of the plate by simple punching, in this embodiment, the slot 242f is punched by pressing with a female mold and a male mold corresponding to each other. The material of the plate was stretched to form a skirt (242g) of appropriate length. As in this embodiment, the slot 242f having the skirt 242g is about the same length as the length of the skirt 242g, so that it can be several times to several tens of times the depth of the conventional slot 242e that has barely escaped the thickness of the plate. To reach depth. In this deep slot 242f, there is little rattling of the blade 242 since the yawing angle of the blade 242 back, front, left, and right relative to the pin inserted into the slot is small.

Preferably, a bushing 244c may be fitted to the pin to be attached to the rotating plate 244 and inserted into the slot 242f surrounded by the skirt 242g. The bushing 244c is formed of a resin material having a large buffering property and a small coefficient of sliding friction on the surface thereof to quickly absorb vibrations of the blade 242, while being inserted into the slot 242f surrounded by the skirt 242g. It is desirable to allow this to slide easily.

In addition, it is preferable that the skirt 242g extends along the transition portion 242h which continues roundly from the bent piece 242d.

On the other hand, the pin inserted into the slot 242f is preferably replaced by a rivet 244b having an upper head 244d and a lower head 244e abutting the upper and lower surfaces of the rotating plate 244, respectively. The initial form of the rivet 244b includes a cylindrical body and an upper head 244d and a cylindrical portion extending from the upper head 244d to enclose the body, and when tightened, a hole drilled in the rotating plate 244. After passing through the cylindrical portion from above through downward, the lower portion 244e is formed by pushing and compressing the cylindrical portion. Similarly, the shaft attached to the lower plate 241f of the domed member 241 is also preferably a rivet 241h having an upper head 241i and a lower head 241j. Since the rivets 244b and 241h are not damaged even during long-term fatigue loads, there is no fear of failure due to dropout.

In addition, the domed member 241 according to this embodiment has a rounded shape as in the prior art, but is not a hollow member but an upper member 241e which is a solid member, and is attached to an upper portion of the blade 242 so that the upper member ( And a lower plate 241f supporting 241e. The upper member 241e is integrally formed of a resin having good cushioning and sound absorption, such as polyethylene, polypropylene, or polystyrene, for example. A recess 241l is formed.

The protrusion 241k and the concave portion 241l may be formed inside the circumference of the lower plate 241f so that the protrusion 241k is not exposed to the outside when engaged.

Since the upper member 241e is formed of a solid material with a good cushioning and sound absorption property, the dome-shaped member 241 does not generate vibration even when the airflow collides or rubs, but rather it is subjected to various devices upstream. While absorbing the noise that is generated and propagated through the airflow.

Example 2

Referring now to FIG. 6, there is shown a partial cross sectional view showing the assembled state of the blade 242 of the injector 24 according to the second embodiment of this invention.

The configuration of the blade 242 of the injector 24 according to the second embodiment is a packing 242i instead of the skirt 242g of the blade 242 of the injector 24 according to the first embodiment. Except that provided, the configuration is the same as that of the blade 242 of the injector 24 according to the first embodiment.

The packing 242i is in close contact with the inner circumference of the conventional blade 242 and the simply punched slot 242e, and has a substantially U-shaped cross section so that the inner surfaces of the flanges on both sides of the bent piece 242d. It adheres to both sides. In the second embodiment, the rivet 244b is fitted into a slot formed by the inner circumference of the packing 242i.

The packing 242i may be formed of a resin material having a large buffering property and a low coefficient of sliding friction, so that the rivet 244b can easily slide while absorbing the vibration of the blade 242 quickly. Do.

As mentioned above, although preferred embodiment of this invention was described, such embodiment is for illustration rather than limiting this invention.

It will be apparent to those skilled in the art that the present invention may be modified, changed, or adjusted from the above-described embodiments without departing from the scope of the present invention.

For example, in the first embodiment, the case where the skirt is extended below the bent piece has been illustrated and described, but may be extended upward or both sides.

Therefore, the scope of the present invention will be defined only by the appended claims, and will include all changes, modifications, and adjustments that do not depart from the spirit of the present invention.

Injector for the air conditioner according to the present invention as described above has almost no noise because there is almost no rattling of the blades due to collision with airflow or friction, and the rivets with heads on both sides of the plate withstand continuous fatigue loads well. Therefore, there is no fear of failure due to dropout. In addition, the domed member according to the present invention does not vibrate even when it collides with or collides with the airflow, so that no noise is generated at all, and the noise generated by other components upstream is absorbed and propagated through the airflow. It prevents it from spreading outside.

Claims (5)

In the injector used in the air conditioner installed on the ceiling with the air supply source 10 and the air flow guide unit 20, the air conditioner for supplying air in the form of vertical descent from the air supply to the floor where people are active And a plurality of blades 242 for collecting the air supply in the form of a vertical annular descent and a plurality of blades 242 for collecting the vertical annular descent formed by the domed member 241 to the center of the annular portion while applying rotational force. And a nozzle 243 constituting an outlet for discharging the gas, and between the lower plate 241f of the dome-shaped member 241 and the blades 242, the axis 241c attached to the center of the lower plate 241f is centered. Rotating plate 244 is provided, and each blade 242 has a lower plate 241f of the domed member 241 and a base plate 245 on the nozzle 243 near one side end portion. Can turn between Each blade 242 extends from a bent piece 242d formed near the other side end portion and a slot 242f formed obliquely to the bent piece 242d and an inner circumference of the slot 242f. A skirt 242g, the rotating plate 244 includes a columnar pin 244a to be inserted into the slot 242f, and the dome-shaped member 241 is a top of a solid resin of high cushioning and sound absorption. And a lower plate (241f) supporting the upper member (241e). The injector according to claim 1, wherein a bushing (244c) is fitted around the pin. 3. The injector according to claim 2, wherein the bushing (244c) is formed of a resin having a high buffering property and a low sliding friction coefficient. The packing 242i according to any one of claims 1 to 3, wherein a packing 242i made of resin having a high buffering property and a low coefficient of sliding friction on the surface is inserted in the inner circumference of the slot 242e. Injector for air conditioning apparatus, characterized in that there is. The rivet according to any one of claims 1 to 3, wherein the pin (244a) provided on the rotating plate (244) has two heads (244d, 244e) which abut on both surfaces of the rotating plate (244). 244b) is characterized in that the injection device for an air conditioner.

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