JP4642502B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner, and particularly relates to an air conditioner of a type installed or embedded in a ceiling.

  It is said that if the cool air from the air conditioner of the type installed or embedded in the ceiling as shown in FIG. In addition to a timer function that operates the air conditioner intermittently and a plurality of wind direction adjustment plates inside the air outlet, etc. It is also common to have a function that can change the wind direction up, down, left and right at various time intervals. In addition, air conditioners equipped with a fluctuation function for controlling the air volume and direction that are close to natural wind have been commercialized.

  A wind direction changing device described in Utility Model Registration No. 3078419 or the like is one that changes the wind direction itself blown from an air conditioner installed on the ceiling. If this type of device is used, for example, it is possible to return the cold wind toward the person in charge such as a reception desk in a predetermined direction (for example, the visitor lobby side) by a plate-like member.

Utility model registration No. 3078419

  In the first place, each user of the space where the air conditioner is installed has a comfortable temperature, and there is a problem that it is difficult to set the temperature and adjust the wind direction that will satisfy everyone. In the air conditioner installed on the ceiling, cold air is strongly blown in all directions during strong cooling, and hot air is strongly blown in all directions during strong heating. For this reason, for example, in the case of cooling, even if the wind direction automatic change function is used, the number of people directly exposed to the cold air is increased, and thus a device as described in Utility Model Registration No. 3078419 is required.

  Further, in the wind direction changing device registered in the above-mentioned utility model, the wind does not reach the direction in which the device is installed at all, and the person who feels the state is comfortable and the person who is not so appear. . For example, if a ceiling-mounted air conditioner is installed in the ceiling between the waiting area of the customer's waiting lobby and the business window, by using the wind direction changing device registered in the utility model described above, Although it can be avoided, the cold wind will not reach those who are engaged behind the counter.

  In addition, it is difficult to apply the above-described utility model registration wind direction changing device in places where users come and go, such as in restaurants and vehicles. For example, in response to requests from users who are constantly changing, the wind direction changing device for utility model registration described above is attached and detached each time, and a practical solution cannot be obtained.

  The above-described wind direction changing device registered in the utility model prevents convection of room air. Even when this type of apparatus is not set, the air conditioning apparatus generally has a problem that cold air stays on the floor surface and warm air stays on the ceiling surface, and the vertical temperature distribution in the room tends to be biased. For this reason, a gap is generated between the set temperature and the actual temperature, and a phenomenon that the effect is insufficient at a temperature recommended for energy saving has occurred.

  The present invention has been made in view of the above-described circumstances, and is an air conditioner (air conditioner) that diffuses a blown airflow from the ceiling to a wide angle to uniformize the temperature of the room and enables an economical operation. Is to provide.

According to a first aspect of the present invention, an impeller disposed below a grill of an air conditioner installed on a ceiling, a blower fan inside the air conditioner , and a motor that drives the impeller. An air conditioner with an airflow diffusion function is provided. More specifically, the impeller includes a blade member, a spoke member, and a hub member that supports the spoke member, and does not hinder air suction near the center of the grill of the air conditioner installed on the ceiling, and The air blown down from the air blowing port by the blade member can be diffused.

  According to the present invention, since the air flow discharged from the air conditioner can be diffused, the temperature unevenness of the entire room can be eliminated, and a highly economical operation can be performed. Also, during cooling, as long as the blade member of the impeller is rotating at least, the cold airflow reaching the user in the blowing direction is interrupted and divided by the blade member. It is valid.

  Next, the best mode for carrying out the present invention will be described. First, an outline of a ceiling-embedded air conditioner will be described. The ceiling-embedded air conditioner 200 is widely used in office buildings, stores, and the like, and includes a suction port 110 in the center of the device and four outlets 100 in a diagonally forward direction. Cool air can be blown toward the vehicle (see FIG. 9).

  FIG. 1 is a cross-sectional view illustrating a configuration of an air conditioner according to a first embodiment of the present invention. Referring to FIG. 1, the air conditioner includes a substantially rectangular parallelepiped casing 1, a turbofan 2, and a heat exchanger 3. A suction port 110 is formed in the center of the grill constituting the bottom of the casing 1, and a blower port 100 is formed on the outer peripheral side of the suction port 110 so as to correspond to each side of the rectangle. Inside the casing 1, a bell mouth 4 is arranged corresponding to the suction port 110, and a turbo fan 2 and a turbo fan 2 for sucking air from the suction port 110 and blowing the air to the side are disposed above the bell mouth 4. A motor 5 for driving is arranged. A cross fin type heat exchanger 3 is disposed between the turbo fan 2 and the blower outlet 100 so as to surround the turbo fan 2 in order to exchange heat of the air blown from the turbo fan 2.

  On the other hand, below the grill constituting the bottom of the casing 1, a shaft holding mechanism 10, a vertical shaft 20 connected to the output shaft of the motor 5 through a speed reducer 120, a blade member 30, and spokes 40 (two of them are included) ), And an air flow diffusion mechanism composed of an impeller including the hub 50 is suspended.

  The impeller is arranged so that the wind blown from the air outlet 100 of the air conditioner hits the rotation track of the blade member 30. In addition, since the blade member 30 of the air conditioner according to the present embodiment is slidable on the spoke 40 as will be described later, it can be adjusted after being installed in the air inlet 110 of the air conditioner. is there.

  FIG. 2 is a side view showing a configuration in the vicinity of the shaft holding mechanism 10 of the airflow diffusion mechanism. Referring to FIG. 2, the shaft holding mechanism 10 includes a back plate 11, a pedestal plate 12, a bolt 13 and a nut for holding the grill portion of the air conditioner between the back plate 11 and the front plate 12. 14, the vertical shaft 20 can be supported vertically.

  The upper end of the vertical shaft 20 is connected to the output shaft of the motor 5, and the lower end of the vertical shaft 20 is a key or spline (not shown) that engages with an engagement groove inside the impeller hub 50. Further, the end member 60 is fixed.

  FIG. 3 is a plan view of the impeller of the air flow diffusion device (diffusion fan) according to the present embodiment. Referring to FIG. 3, the hub 50 supports eight spokes 40, and an eight-blade impeller with a blade member 30 attached to the tip of each spoke 40 is shown. Further, the impeller is disposed so as to be coaxial with the output shaft of the motor 5 inside the air conditioner, and the vane member 30 rotates around the outlet 100 by driving the motor 5 so that the wind blown simultaneously with the operation can be diffused. It is like that. Further, the impeller according to the present embodiment is configured such that a space can be secured by separating the blade members 30 facing each other via the hub 50 so as not to obstruct the suction port 110 of the air conditioner. ing.

  4 is an enlarged cross-sectional view of the blade member 30 of FIG. 3 taken along the line P-P ′. Referring to FIG. 4, each blade member 30 has a spoke holding structure 32, and the spoke 40 can be inserted and attached to the spoke holding structure 32. The cross section of the spoke 40 is circular, and the blade member 30 can be changed to a desired pitch angle and fixed by a screw 32a of the spoke holding structure 32. Moreover, as shown in FIG. 5, the screw 32a is loosened, the blade member 30 is moved on the spoke 40, and is adapted to the layout of the air outlet 100 of the air conditioner, or the diameter of the entire impeller is enlarged or reduced. It is possible to do.

  As the blade member 30, for example, an aluminum plate, an acrylic plate, or the like can be preferably used. In addition, since the entire impeller does not actively operate and generate wind, it is not necessary to adopt a configuration with particularly high rigidity.

  When the turbo fan 2 of the air conditioner having the above configuration is rotated, indoor air is sucked from the suction port 110 and the impeller of the airflow diffusion mechanism is rotated at a predetermined reduction ratio. The sucked air is blown out to the outer peripheral side of the turbo fan 2 as indicated by an arrow X in FIG. The air blown to the outer peripheral side of the turbo fan 2 is heat-exchanged by the heat exchanger 3 arranged on the outer peripheral side of the turbo fan 2 as indicated by an arrow Y, and is provided at the bottom of the casing 1. 100 is blown into the room. Furthermore, the air blown out from the outlet 100 is diffused by the rotating impeller. In addition, at least a state in which the blade member 30 is positioned between the air outlet 100 and the user can be created every predetermined time, and the time during which cold air or the like is blown to the user can be shortened. .

  Next, a second embodiment of the present invention will be described. This embodiment is characterized in that a plurality of the impellers of the first embodiment described above are arranged in the vertical direction. FIG. 6 is a cross-sectional view of the airflow diffusion mechanism of the air conditioner according to the present embodiment. Referring to FIG. 6, a configuration in which two impellers are arranged on one vertical shaft 20 is shown. According to this configuration, a large number of timings at which the blade member 30 is positioned between the blower outlet 100 and the user can be created according to the number of impellers. It is also possible to change the size of the diameter of the impellers and the number, shape, area, and pitch angle of the blade members 30.

  Subsequently, a third embodiment of the present invention will be described. The present embodiment is characterized in that a motor 130 different from the motor 5 for driving the turbofan 2 is provided. FIG. 7 is a cross-sectional view showing the configuration of the air-conditioning apparatus according to this embodiment. Referring to FIG. 7, a motor 130 with a speed reducer is disposed in the internal space of the bell mouth 4 so that the vertical shaft 20 can be rotated. According to the present embodiment, the motor 130 with a speed reducer can be operated independently of the operation of the air surveying device main body.

  Although the embodiments of the present invention have been described above, it is needless to say that the technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be adopted. For example, the intermediate portion of the vertical shaft 20 and a hook, ring, or the like separately embedded in the ceiling may be connected by a chain, string material, piano wire, or the like to distribute the load.

  Further, in each of the above-described embodiments, the blade member 30 has the spoke holding structure 32, and it has been described that the pitch angle is variable and the spoke 40 can be moved. It is also possible to use a fixed type or layout type impeller.

  Similarly, in each of the above-described embodiments, it has been described that an impeller having a trapezoidal blade member 30 with eight blades is used, but a configuration in which a plurality of blade members are provided by replacing the hub 50 is also adopted. it can. Further, the shape of the blade member 30 is not only the geometric shape but also an all shape, a rugby ball shape, or a shape obtained by bending from an aerodynamic viewpoint as shown in FIG. In this shape, the air conditioner is operated, but even when the power is not transmitted to the impeller side, the impeller can efficiently receive the wind and rotate to diffuse the airflow.) Various shapes can be adopted as long as the airflow can be diffused efficiently.

  In each of the above-described embodiments, the blade member 30 is attached to the spoke member 40. However, the blade member 30 is provided with a joint portion with the hub member 50 to form an impeller, and the spoke member 40 is omitted. Can also be adopted. In this case, the diameter of the impeller and the blade layout are fixed in principle. Of course, an impeller having a different impeller diameter and blade layout may be prepared in advance and the entire impeller may be replaced.

It is a figure showing the structure of the air conditioning apparatus (air conditioner) which concerns on the 1st Embodiment of this invention. It is an enlarged view of FIG. It is a front view of the air harmony device (air conditioner) concerning a 1st embodiment of the present invention. FIG. 4 is an enlarged cross-sectional view taken along the line P-P ′ in FIG. 3. It is another front view of the air conditioning apparatus (air conditioner) which concerns on the 1st Embodiment of this invention. It is a figure showing the structure of the air conditioning apparatus (air conditioner) which concerns on the 2nd Embodiment of this invention. It is a figure showing the structure of the air conditioning apparatus (air conditioner) which concerns on the 3rd Embodiment of this invention. It is a figure showing an example of the blade member. It is a figure showing the blowing direction of the ceiling-embedded air conditioner.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casing 2 Turbo fan 3 Heat exchanger 4 Bell mouth 5 Motor 10 Shaft holding mechanism 11 Back plate 12 Base plate 12a Vertical shaft insertion part 13 Bolt 14 Nut 15 Hanging end 20 Vertical shaft 30 Decoration blade 32 Spoke holding structure 32a Screw 40 Spoke 50 Hub 60 End member 100 Air outlet 110 Air inlet 120 Speed reducer 130 Motor 200 Air conditioner (air conditioner)

Claims (6)

An impeller disposed below the grill of the air conditioner installed on the ceiling;
A blower fan inside the air conditioner and a motor for driving the impeller,
A shaft member constituting the rotating shaft of the impeller,
The impeller is rotated by driving the motor, and the wind blown down from the air outlet of the air conditioner can be diffused.
An air conditioner with airflow diffusion function characterized by An impeller comprising a blade member, a spoke member, and a hub member that supports the spoke member, and disposed below a grill of an air conditioner installed on a ceiling;
A blower fan inside the air conditioner and a motor for driving the impeller,
A shaft member having an upper end connected to the output shaft of the motor and a lower end for horizontally supporting the impeller,
The impeller is rotated by driving the motor, and the wind blown down from the air blowing port can be diffused.
An air conditioner with airflow diffusion function characterized by And a reduction device for reducing the shaft rotation at a predetermined reduction ratio between the shaft member and the motor.
The air conditioner with an airflow diffusion function according to claim 1 or 2. The air conditioner with an airflow diffusion function according to any one of claims 1 to 3, wherein a pitch angle of the blade member is variable. Said blade member, said spoke members above the movable and the things, airflow diffusion function air conditioner according to claim 2 to 4 any one characterized. That were provided with a plurality of impellers on one axis by said shaft member, airflow diffusion function air conditioner according to claim 1 to 5 any one characterized.

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