Wind inlet and outlet system for an air conditioner

[0002] This invention relates to a wind inlet and outlet case for a blower of an air conditioning system, particularly to one consisting of a body and a face plate, connected to an inner machine to have plural wind inlet and outlet cases convenient to install with low cost, maintaining good air quality.

[0003] At present most conventional central air conditioning systems, as shown in FIG. 1, includes an outer machine A1 as main power source, one or more inner machines A2 installed in one or more rooms and connected to the outer machine A1. The inner machine A2 is positioned in a preset proper location (for example, in a middle layer between a ceiling plate and a floor plate, to supply cool or hot air. One or more wind outlets A3 are connected with the inner machine with guide pipes, having a faceplate flush with the ceiling. Further one or more wind inlets A4 are also provided on a surface of the ceiling, having respectively a faceplate and a filter to suck out waste air in the room.

[0004] However, the conventional central air conditioning systems generally have the following disadvantages.

[0005] 1. As the wind inlet A4 is not connected with an exhaust pipe to guide out waste air, hot waste air staying in the intermediate layer between the ceiling and the floor plate may enter the room mixed with cool air, affecting cooling effect.

[0006] 2. Although the wind inlet A4 has a filter, and the sucking opening of the inner machine does not have a filter, so when the inner machine sucks in cool air from the outer machine, those waste air in the intermediate layer may mix with the clean cool air into the room floating in the cool air and then exhausted out of the wind outlet A3, worsening air quality.

[0007] 3. If the wind inlet A4 is to be connected with a guide pipe to achieve exhausting effect, the wind inlet A4 has to be connected with an exhausting pipe, increasing cost, not economical.

[0008] 4. The conventional blower buried in the ceiling has to be provided with plural wind inlets and wind outlets in the surface of the ceiling, forming not good outer appearance.

[0009] So some makers offer a kind of conventional inner machines 2, as shown in FIG. 2, including also an outer machine 1 and an inner machine 2 provided with a wind inlet 20 and a wind outlet 21 formed integral with the inner machine 2 to have good appearance. Though this inner machine with the wind inlet 20 and the wind outlet 21 integral is convenient, more than two inner machines have to be installed in a comparatively large room, or its cooling effect may not enough, resulting in high cost. Besides, the wind inlet and the wind-outlet plate are too close to the operating portion of the inner machine 2, producing unpleasant noise of the operation. In addition, the inner machine has a heavy weight, not convenient to carry, install or repair.

[0010] The wind inlet and outlet case for a blower of an air conditioning system in the present invention includes a body and a faceplate combined together and connected to an inner machine.

[0011] The feature of the invention is the body having a wind outlet room and a wind inlet room separated with a lengthwise vertical wall. The wind outlet room and the wind inlet room are separately connected with the inner machine with separate guide pipes, and the faceplate has a wind inlet and a wind outlet respectively facing the wind inlet room and the wind outlet room.

[0012] This invention will be better understood by referring to the accompanying drawings, wherein:

[0013] FIG. 1 is a block diagram of a conventional central air conditioning system;

[0014] FIG. 2 is a perspective view of a conventional fitting-in inner machine;

[0015] FIG. 3 is an exploded perspective view of a wind inlet and outlet case for a central air conditioning system in the present invention;

[0016] FIG. 4 is a cross-sectional view of the wind inlet and outlet case for a central air conditioning system; and,

[0017] FIG. 5 is cross-sectional view of the wind inlet and outlet case in the invention, showing the direction of the wind coming in and going out.

[0018] A preferred embodiment of a wind inlet and outlet case for a wind blower of an air conditioning system in the present invention includes an outer machine and an inner machine as a conventional one, and a wind inlet and outlet case 3 connected to the inner machine. The wind inlet and outlet case 3 has a body 30 and a face plate 31 combined together, and the body 30 has a lengthwise separating wall 300 in the intermediate portion, a wind outlet room 301 and the wind inlet room 302 separated by the separating wall. Further, a wind guide pipe 32 is connected to an outer wall of the wind outlet room 301 and two wind guide pipes 302 connected to an rear wall of the wind inlet room 302, and those wind guide pipes 32 are connected to the inner machine. The inner walls of the wind outlet room 301 are attached with a layer of temperature preserving material 33 to preserve the temperature in the wind outlet room 301 and prevent water drops from forming when cool wind contact with hot air. Further, the wind inlet and outlet case 3 has a lengthwise projecting connect edge 34 respectively extending from a lower end of a front and a rear side, and plural bolt holes bored in each connect edge 34 to screw with the faceplate 31 positioned on the surface B of the ceiling in the flush condition. Then the body 30 and the faceplate 31 are combined together, and the faceplate 31 has a wind outlet 310 and a wind inlet 311 respectively facing toward the wind outlet room 301 and the wind inlet room 302. The wind outlet 310 has a vertical leaf unit 312, and the wind inlet 311 has a filter 313. The face plate 31 has four holes 314 at four corners, and a lengthwise projecting bar 315 formed between the wind outlet 310 and the wind inlet 311 to combine with the separating wall 300 of the body 30.

[0019] In assembling and using, referring to FIGS. 3, 4 and 5, firstly, the body 30 of the wind inlet and outlet case 3 is fixed with an inner side of the surface B of the ceiling (as shown in FIGS. 3 and 4), and then the face plate 31 is fitted with the bottom of the body 3, with the wind outlet 310 facing the wind outlet room 301 and the wind outlet hole 311 facing the wind inlet room 302, with the lengthwise projecting bar 315 fitting with the separating wall 300, with the leaf unit 313 facing the wind outlet room 301 and adjustable in the direction of blowing wind. The filter 314 of the wind inlet room 311 just faces the entrance of the wind inlet room 302 so that air filtered may circulate to the inner machine via the guide pipe 32 to be treated, as shown in FIG. 5, keeping good quality of circulating air and cool temperature. Finally bolts N screw through the holes 314 of the faceplate 31 and the bolt holes 340 of the connect edge 34 of the body 30, finishing assembling of the invention.

[0020] The invention has the following advantages, as seen from the aforesaid description.

[0021] 1. The faceplate of the wind inlet and outlet case is provided with a wind outlet and wind inlet presenting a beautiful appearance after installed.

[0022] 2. Plural wind inlet and outlet cases may be connected to the inner machine, easily installed with the ceiling, convenient to maintain and repair with no waste of labor and time, lowering cost and facilitating assembling of components, very practical.

[0023] 3. The wind outlet room is provided with a layer of temperature preserving material to prevent hot air from percolating in and to keep cool air without forming water drops.

[0024] 4. The wind inlet and outlet case is provided with a wind outlet and a wind inlet connected separate pipes to properly treating cool and hot air without possibility of mixing together to suck in dirt in an intermediate layer between the ceiling and the floor plate. While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall in the spirit and scope of the invention.