JP3103696B2 - Air blower for air conditioning - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates, on the blow-out air-conditioning system to adjust the air flow blowing in air-conditioning.

[0002]

In recent years, blow out port is provided in the ceiling, blowing can be provided apparatus small comfortable airflow temperature distribution of the upper and lower both during cooling at the time of heating is required.

Conventionally, this type of blowing device is connected to a main body of an air conditioner through a duct, and blows out conditioned cold air or warm air into a room. Hereinafter, the configuration will be described with reference to FIG.

[0004] As shown in the figure, a blowing device provided with an opening in a ceiling 108 is provided with an air volume control device 103 for adjusting the air volume while supplying conditioned air from an air conditioner main body 101 through an air supply duct 102. Conditioned air 104
Into the chamber 105, and the chamber 105
Blowout frame 106 and wind direction louver 10 mounted inside
7.

In the above configuration, adjustment of the supply amount of the conditioned air according to the indoor air-conditioning load is performed by the air volume control device 103 provided separately from the blowing device, and the conditioned air 104 supplied to the chamber 105 is adjusted. The airflow is given directionality by the angle of the wind direction louver 107 provided in the blowout frame 106, and is blown into the room.

[0006]

In such a conventional air-conditioning blow-off device, the temperature of the blow-off air is lower than the temperature of the indoor air during cooling, and the cool air tends to settle. The louver 107 is set so that the air flow has a horizontal spread. In addition, since the temperature of the blown air is higher during heating and the warm air tends to rise, the louver 107 is set in the vertical direction shown by the broken line in FIG. Was.

However, since the wind direction is controlled using the louver 107, there is a problem that the airflow angle cannot be largely deflected. Further, when the airflow is largely deflected, there is a problem that the pressure loss at the louver 107 increases. Furthermore, when installing the duct 102 in the space above the ceiling, a small-diameter duct 102 is used to reduce the space above the ceiling. In this case, in order to reduce the resistance of the duct 102, air-conditioned air having a large temperature difference from the indoor air temperature is used. Is transported in a small air volume. For this reason, the blowing wind speed becomes small, and there is a problem that it is not possible to obtain a wind speed sufficient to control the wind direction with the louver 107. Further, the air volume control device 103 is connected to the duct 10 above the ceiling.
Since it is installed in the middle of two pipes, an electric drive device and a remote control device are required, though not shown, and there is a problem that maintenance such as cleaning of the air volume control device 103 after installation is very difficult. Was. Furthermore, in order to perform comfortable air conditioning, control of the temperature, the wind speed, the flow rate, and the wind direction of the blown air is an important factor, but there is a problem that there is no blowout device that can be controlled collectively and collectively.

The present invention has been made to solve the above problems, and has a step.
The air pressure is adsorbed on the element wall by the negative pressure part generated by
A first object is to obtain a large airflow deflection angle with low pressure loss by generating a Coanda effect and using a wind direction control means having a fluid element shape.

A second object is to reduce the temperature difference from the room air by mixing the room air with the conditioned air supplied from the duct to the chamber by connecting the opening of the negative pressure section formed by the guiding means to the room. Another object of the present invention is to make it easier to control the wind direction by further increasing the amount of blown air.

A third object is to add an air volume control device to the blowing device so that the air volume can be easily adjusted without requiring a remote control device from the blowing device, and maintenance such as cleaning of the air volume control device can be performed. It can be easily performed from the blowing device.

A fourth object is to detect the temperature of the air-conditioned air and the temperature of the indoor air, calculate the optimum wind speed and flow rate and the position of the airflow from the temperature difference, and perform horizontal driving to thereby obtain the temperature, the wind speed and the flow rate of the blown air. The purpose of the present invention is to provide comfortable blowing airflow properties by comprehensively controlling the wind direction.

[0012] A first means for achieving the first object of the present invention is a negative pressure portion generated by providing a step in a flow path at an air conditioning outlet, and a wind direction control means for controlling a wind direction of an air flow. And a guiding means downstream of the negative pressure portion for guiding an air flow by the Coanda effect.

Further, a second means for achieving the second object comprises a guiding means provided downstream of the negative pressure portion for guiding an air flow, and an attracting means for attracting room air to the conditioned air. The configuration is as follows.

A third means for achieving the third object is provided at the air-conditioned air inlet of the chamber and provided with an air volume control means for controlling the amount of blown air.

A fourth means for attaining the fourth object is an air-conditioning air temperature detecting means, an indoor air temperature detecting means, and a calculating means for calculating an optimum position of the wind direction controlling means from the temperature difference. And a wind direction control means for horizontally driving the wind direction control means by an output from the arithmetic means and an air flow rate adjusting means for driving the air flow rate control means.

[0016]

According to the present invention, the flow of the present invention is improved by the structure of the first means.
The negative pressure generated by the sudden expansion due to the step in the path induces and deflects the airflow by the Coanda effect, so that the deflection angle of the blown airflow can be greatly changed with low pressure loss compared to a device that deflects by resistance in the flow path. is there.

[0017] Further, according to the configuration of the second means, the indoor air is mixed with the blown air, the difference between the blown air temperature and the indoor air temperature is reduced, and the air volume is further increased. Control can be facilitated.

Further, by providing the air volume control device at the outlet by the configuration of the third means, the air volume can be easily adjusted from the air outlet device, and maintenance such as cleaning of the air volume control device can be easily performed from the air outlet. It can be done to.

Further, with the configuration of the fourth means, the temperatures of the conditioned air and the indoor air are detected, and the airflow direction and the airflow of the blown air can be comprehensively controlled by the airflow control means and the airflow direction control means. It can automatically provide the airflow properties of the blown air that optimizes the airflow.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG.

The same parts as those in the conventional example are denoted by the same reference numerals and description thereof is omitted. As shown in FIG. 1, the acceleration element 1 in the chamber 105 that increases the wind speed while rectifying the conditioned air supplied from the air supply duct 102.
Negativeness caused by providing a step downstream of the acceleration element 1
It comprises a pressure part 4, a wind direction control element 2 for controlling the wind direction, and a Coanda element 3 for adsorbing the airflow deflected by the wind direction control element 2 by the Coanda effect.

With the above configuration, the conditioned air supplied into the chamber 105 is throttled and accelerated while being rectified by the acceleration element 1. Accelerated airflow is diverted to the deflection current and the straight flow by the wind direction control element 2, the deflecting flow acceleration element 1
Element 3 due to the negative pressure of negative pressure section 4 generated at the step
Adsorbed on, it is deflected in a large angle to the horizontal direction along the ceiling surface. The wind direction control element 2 is provided with a horizontal drive mechanism in the chamber 105, and when only a straight flow is required, the wind direction control element 2 is horizontally moved and stored in the downstream of the acceleration element 1 as shown in FIG. Thus, only the straight flow can be obtained without the wind direction control element 2 acting. When changing the angle of the deflected flow, the position of the wind direction control element 2 is adjusted by horizontal movement adjustment as shown in FIG. The angle can be arbitrarily set up to the horizontal direction along.

[0023] According to the air-conditioning blow-out device of the first embodiment of the present invention, it is possible to divert the blow air flow vertically downward and horizontally, and suddenly due to the step of accelerating elements
Adsorbed to the Coanda element by the negative pressure of the negative pressure part generated by the expansion
Since the wind direction is changed by the Coanda effect, the pressure loss is small and the airflow can be largely deflected to the horizontal direction.

The shape of the wind direction control element 2 is L-shaped and is moved in the horizontal direction. However, if the Coanda effect can be generated, the wind direction control element may have another shape, and the drive mechanism may have other shapes such as rotation. Needless to say, the same effect can be obtained even with the mechanism (1).

Next, a second embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. The same parts as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

As shown in the drawing, an acceleration element 1 in a chamber 105 for increasing the wind speed while rectifying the conditioned air supplied from a duct 102, and a wind direction control downstream of the acceleration element 1 for controlling the wind direction. The element 2, the Coanda element 5, which adsorbs the airflow deflected by the wind direction control element 2 by the Coanda effect, and the negative pressure portion 4 in the chamber and the room at atmospheric pressure are communicated between the Coanda element 5 and the blowing frame 106. The guide path 6 is configured as follows.

With the above configuration, the conditioned air supplied into the chamber 105 is throttled and accelerated while being rectified by the acceleration element 1. The accelerated airflow is split into a straight flow and a deflected flow by the wind direction control element 2, and the deflected flow is
And the negative pressure part 4 generated in the sudden expansion part by the Coanda element 5 is attracted to the Coanda element 5. At this time, since the negative pressure section 4 communicates with the room at atmospheric pressure through the attraction path 6, the indoor air is introduced into the negative pressure section 4 and mixed with the blown air flow, and the temperature difference between the blown air and the room air is reduced. It becomes smaller and the air volume is increased. By adjusting the position of the wind direction control element 2, only the straight flow, or by adjusting the degree of adsorption to the Coanda element 5, an arbitrary angle can be set from vertically downward to the horizontal direction along the ceiling surface. Can be.

As described above, according to the air-conditioning blow-off device of the second embodiment of the present invention, the blow-off airflow can be divided into a vertically downward direction and a horizontal direction, and the step on the downstream side of the acceleration element can be separated.
Element due to the negative pressure of the negative pressure part caused by sudden expansion due to
And the wind direction is changed by the Coanda effect, so that the pressure loss is small and the air flow can be largely deflected to the horizontal direction. Furthermore, by connecting the negative pressure part due to the rapid expansion to the room to suck the indoor air and mix it with the blown air, the temperature difference between the blown air and the room air is reduced, the air volume and the wind speed are increased, and the wind direction is increased. Control is easy.

Although the guide path 6 is formed by the Coanda element 5 and the blowing frame 106 and communicates with the room inside the blowing device, the same effect can be obtained by providing the opening outside the blowing device. Not even.

Next, a third embodiment of the present invention will be described with reference to FIG. The same parts as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

As shown in the figure, an air flow control damper 7 at the junction of the air supply duct 102 and the chamber 105 for adjusting the air flow of the conditioned air supplied from the air supply duct 102 is provided. A damper rotating shaft 8 for transmitting torque, and the air volume control damper 7 from inside the room.
Knob 9 for rotating and driving the air conditioner, acceleration element 1 for increasing the wind speed while rectifying the conditioned air supplied into the chamber, wind direction control element 2 downstream of the acceleration element 1 for controlling the wind direction, wind direction control It comprises a Coanda element 3 that adsorbs the air flow deflected by the element 2 by the Coanda effect.

With the above configuration, when adjusting the air flow to adjust to the required air flow according to the indoor air-conditioning load, the air volume adjusting knob 9 installed in the blower is operated. The air volume control knob 9 rotates the air volume control damper 7 through the damper rotation shaft 8. The opening degree of the air volume control damper 7 is changed by this shaft rotation motion, and the air volume is adjusted.
The air-conditioned air whose air volume has been adjusted is supplied into the chamber, and is throttled and accelerated while being rectified by the acceleration element 1. The accelerated airflow is divided into a straight flow and a deflected flow by the wind direction control element 2, and the deflected flow is adsorbed to the Coanda element 3 by a negative pressure part 4 generated in a rapid expansion part by the acceleration element 1 and the Coanda element 3. By adjusting the position of the wind direction control element 2, the straight flow or the degree of adsorption to the Coanda element 3, the angle can be set arbitrarily from vertical downward to horizontal along the ceiling surface. .

As described above, according to the air-conditioning blow-off device of the third embodiment of the present invention, the required air flow according to the indoor air-conditioning load can be easily obtained in the immediate vicinity of the blow-out port, and the blow-off airflow can be reduced vertically. The air flow can be divided downward and horizontally, and the wind direction is changed by the Coanda effect, so that the pressure loss is small and the air flow can be deflected to the horizontal direction. Further, since the air volume control damper 7 is installed in the blowing device, maintenance such as cleaning of the air volume control damper 7 can be easily performed from the blowing device.

Although the air volume control damper 7 is manually operated, it goes without saying that the air volume control damper 7 may be driven electrically by providing a driving device.

Next, a fourth embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. The same parts as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

As shown in the figure, an air flow control damper 7 at the junction between the air supply duct 102 and the chamber 105 for adjusting the air flow of the conditioned air supplied from the air supply duct 102 is provided. A damper motor 10 for rotational driving, a blow-out temperature thermistor 11 in the chamber for detecting the temperature of the conditioned air, an accelerating element 1 for rectifying the conditioned air to increase the wind speed, and downstream of the accelerating element 1 for controlling the wind direction Wind direction control element 2, a wind direction drive device 12 for horizontally driving the wind direction control element 2, a Coanda element 3 for adsorbing an airflow deflected by the wind direction control element 2 by the Coanda effect, and an indoor temperature thermistor for detecting indoor air temperature 13. Based on the difference between the blow-out temperature and the room temperature, the optimal air flow control damper 7 opening degree and the optimal wind It is constructed from the arithmetic unit 14 for calculating the position of the control element 2.

According to the above configuration, the temperature difference detected by the room temperature thermistor 13 with respect to the set room temperature is
The calculation unit 14 calculates the air conditioning load. The calculation unit 14 further calculates the required air volume from the temperature difference detected by the air-conditioning air temperature thermistor 11 and the indoor temperature thermistor 13 and the air-conditioning load, and determines the opening of the air volume control damper 7.
The air flow control damper 7 opening is transmitted to the damper motor 10 to drive the air flow control damper 7 to the required opening. The air-conditioned air whose air volume has been adjusted is supplied into the chamber 105, and is throttled and accelerated while being rectified by the acceleration element 1. The calculating unit 14 calculates the wind speed obtained from the detected temperature difference from the air volume by the air-conditioned air temperature thermistor 11 and the indoor temperature thermistor 13 to predict the reach of the vertically downward airflow and the reach of the horizontal direction, The position of the wind direction control element 2 at which the optimal air volume ratio between the vertical component and the horizontal component is determined. The position of the wind direction control element is
To move the wind direction control element 2 to the optimal position, and blow out the optimal airflow for reducing the vertical temperature difference.

As described above, according to the air-conditioning blowout device of the fourth embodiment of the present invention, the airflow is automatically adjusted to the optimum airflow according to the indoor air-conditioning load, and the blown airflow is divided vertically downward and horizontally. Since the wind direction is changed by the Coanda effect, the pressure loss is small and the air flow can be deflected to the horizontal direction. Furthermore, the vertical component and the horizontal component of the airflow can be automatically adjusted to an optimal air volume ratio so as to reduce the vertical temperature difference, and the airflow properties of the blown air can be comprehensively controlled.

Although the damper motor 10 is used to drive the air volume control damper 7, it goes without saying that another drive device may be used.

[0040]

As is apparent from the above embodiments, according to the present invention, the blown air flow can be directed vertically downward and horizontally, and the negative airflow caused by the rapid expansion due to the step in the flow path can be reduced.
Due to the negative pressure of the pressure part, it is adsorbed by the Coanda element,
Since the airflow is guided and deflected by the element, it is possible to provide an air-conditioning blowout device that has an effect of reducing the pressure loss and largely changing the airflow in the horizontal direction.

Further, by sucking the air in the room and mixing it with the conditioned air, the difference between the blown air and the room air temperature is reduced, and the amount of air is increased, so that the air direction can be easily controlled. A blowing device can be provided.

Further, it is possible to provide an air-conditioning blow-out device which is capable of easily adjusting the required air flow according to the indoor air-conditioning load in the immediate vicinity of the blow-out port, thereby facilitating maintenance such as cleaning.

Further, an air-conditioning blow-out device having an effect of automatically adjusting a required air flow according to a room air-conditioning load, automatically adjusting a blow-off angle of an air flow, and comprehensively controlling an optimum blow-off air flow property. Can be provided.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a configuration of an air-conditioning blow-out device according to a first embodiment of the present invention at the time of airflow splitting

FIG. 2 is a cross-sectional view of the configuration when the air stream is traveling straight.

FIG. 3 is a sectional view of the configuration when adjusting the airflow angle.

FIG. 4 is an external perspective view of the same.

FIG. 5 is a sectional view of the configuration of the second embodiment.

FIG. 6 is a sectional view of the configuration of the third embodiment.

FIG. 7 is a sectional view of the configuration of the fourth embodiment.

FIG. 8 is a cross-sectional view of a configuration of a conventional air-conditioning blowing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Acceleration element 2 Wind direction control element 3 Coanda element 4 Negative pressure part 6 Induction path 7 Air volume control damper 8 Damper rotation axis 9 Air volume adjustment knob 10 Damper motor 11 Air conditioning air temperature thermistor 12 Wind direction drive device 13 Indoor temperature thermistor 14 Calculation unit 15 Room temperature Setting device 103 Air volume control device 105 Chamber 107 Wind direction louver

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Noriko Sekihara 6-2-61 Imafukunishi, Joto-ku, Osaka-shi, Osaka Inside Matsushita Seiko Co., Ltd. (56) References JP-A-62-5044 (JP, A) Kaihei 2-171520 (JP, A) JP-A 61-101314 (JP, U) (58) Fields studied (Int. Cl. ⁷ , DB name) F24F 13/08 F24F 13/068 F24F 13/10

Claims (4)

(57) [Claims] 1. A air conditioning blow-out port, and a negative pressure caused by providing a step in the flow path, and direction control means for controlling the wind direction of the air flow, the air flow by the Coanda effect In the downstream of the negative pressure section An air-conditioning blowing device provided with a guiding means for guiding. 2. The air-conditioning blow-off device according to claim 1, further comprising an inducing means provided downstream of the negative pressure part for inducing an air flow, and an inducing means for inducing room air to the conditioned air. 3. An air-conditioned air inlet of a chamber,
The air-conditioning blow-off device according to claim 1, further comprising an air flow control means for controlling a blow-off air flow. 4. An air-conditioning air temperature detecting means, an indoor air temperature detecting means, an arithmetic means for calculating an opening degree of the air volume control means for obtaining an optimum blown air volume and a position of the air direction control means based on the temperature difference, and an arithmetic means. 2. The air-conditioning blow-out device according to claim 1, further comprising: a wind direction driving means for horizontally driving the wind direction control means with the output of the air flow control means, and an air flow rate adjusting means for driving the air flow rate control means.