JPH0122479B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is for arbitrarily deflecting the blowing flow direction of an air conditioner or the like.

The present invention relates to an air blowing device using a crossflow fan, which includes a rear guider whose downstream side is provided with a gradually expanding shape, a stabilizer, and a rotating shaft provided near the vortex of the fan on the discharge side of the fan, which rotates around a rotation axis. The flow control member has a head having an arcuate cross-sectional shape, and the center of the head is located eccentrically from the rotation axis, and a first substantially flat head is located on one side of the extension of the head. the other has a substantially arc-shaped surface to have an adhesion effect, and a second substantially flat surface facing the head and forming an obtuse angle with the substantially flat surface. , by communicating a portion of the arcuate surface close to the head with a portion at or near the intersection of the first substantially flat surface and the second substantially flat surface; It is possible to significantly change the blowing direction of the flow without significantly reducing the air volume only by rotating the shaft, or to separate the flow into downward blowing and horizontal blowing, or to create a connection provided in the flow control member. It is possible to improve the air conditioning effect by making it easier to merge the flows through the mouth, sharpening the flow velocity distribution, increasing the reach of the flow, and uniformizing the temperature distribution in the room. It is something.

An example in which a conventional air blower is used in a wall-mounted heat pump will be explained. In Figure 1, 1 is a crossflow fan, 2 is a stabilizer, and 3
4 is a rear guider, and 4 is a flow deflection section composed of a plurality of louvers, and these four constitute a blower device. 5 is a heat exchanger, and 6 is a casing. When the cross-flow fan 1 rotates, the flow is sucked in through the heat exchanger 5, and the flow direction is changed by the flow deflector 4 before exiting. Originally, in a heat pump, in order to equalize the temperature distribution in the air-conditioned room, it is desirable to control the blowing flow direction to downward blowing during heating and horizontal blowing during cooling. However, as shown by the broken line in Figure 1, when the air is deflected downward, the louvers 4 almost block the air outlet, resulting in a significant drop in air volume and making it impossible to obtain a sufficient air conditioning effect. I couldn't do it. Furthermore, when a plurality of louvers are used as in the past, the space for the air outlet becomes large, which poses a problem in making the device thinner.

Furthermore, if a large amount of hot air is blown downward during heating, the amount of hot air may be too large and may cause discomfort when it hits the human body. It has been confirmed through experiments that if the purpose is to improve the temperature distribution, a substantially constant temperature distribution can be obtained by blowing a certain amount of air downward and the rest in the horizontal direction. Therefore, in order to improve the temperature distribution and eliminate the discomfort caused by the blown hot air, it is necessary to have a function for blowing out a certain amount of hot air downward and blowing out the rest horizontally, that is, a dividing function. In conventional air blowers, it has been difficult to provide the above-mentioned flow dividing function.
The present invention eliminates the above-mentioned drawbacks of the conventional method and enables the operation of dividing the flow, and also makes the blowout velocity distribution of the flow sharp and sharp, extends the reach of the blowout flow, and makes the temperature distribution in the air-conditioned room uniform. It is something to do.

As a configuration for this purpose, the present invention includes a cross flow fan, a rear guider whose downstream side is provided with a gradually expanding shape, a stabilizer, and a flow control member provided near the fan on the discharge side of the fan, and The control member is configured to rotate within a predetermined range around a rotating shaft provided eccentrically, and the side surface of the flow control member facing the fan is configured in a substantially arc shape, and the downstream side surface is configured to have an arc shape. The shape has a bias effect such that the flow between the rear guider and the flow control member adheres to the rear guider when the rear guider is tilted toward the rear guider, and the downstream portion of the flow control member facing the cross flow fan is shaped so that the flow between the rear guider and the flow control member adheres to the rear guider. A communication port is provided on the side to communicate the pressure of the flow around this member.
The adhesion position of the flow changes according to the rotation of the rotary shaft to perform branching and deflection operations, and the action of the communication port facilitates the merging of the flows flowing around the control member, making the blowout distribution sharp and reaching the target. The distance increases.

The prior art related to the present invention will be explained below.

First, referring to FIGS. 2 to 5, a case where the flow control member does not have a communication port will be described. 7 is a cross-flow fan that generates a vortex V and generates a flow by rotating around the fan shaft 70, 8 is a stabilizer that stabilizes the vortex V, and 9 is a rear guider, which is connected to an upstream member 9a. and a downstream member 9b. rear guider 9b
is constructed in a shape that gradually expands toward the downstream side. Reference numeral 10 denotes a flow control member, which is provided near the cross-flow fan 7 on the discharge side 11 of the cross-flow fan 7. Further, the flow control member 10 rotates within the range shown in FIGS. 2 and 3 around the rotating shaft 100. A portion of the flow control member 10 facing the cross flow fan 7, that is, a head portion 10a
has an almost arc shape to stabilize the vortex V. In other words, the part of the rear guider 9b that guides the flow from the crossflow fan is shorter than the rear guider of a conventional crossflow fan, so this shape is used to prevent the vortex V from becoming unstable. It's summery. On the other hand, the rotating shaft 100
is provided at an eccentric position with respect to the portion of the flow control member facing the cross flow fan 7, that is, the center of the circular arc of the head portion 10a. As a result, as the flow control member 10 rotates, the distance between the cross flow fan 7 and the second substantially flat surface 10d, which is the portion of the flow control member facing the fan, changes. . Further, when the flow control member is rotated in the direction of the rear guider 9b as shown in FIG. It is formed into a shape that has a bias effect that makes it adhere to the surface. As shown in FIG. 8, the other of the downstream first substantially flat surfaces 10b of the flow control member is formed by a surface having an adhesion effect, that is, a substantially arcuate surface 10c, facing the head 10a and facing the said head 10a. first substantially flat surface 10
The flow control member 10 is comprised of a second substantially flat surface 10d forming an obtuse angle with the second substantially flat surface 10d.

A case where the present invention is applied to a wall-mounted heat pump will be explained with reference to FIG. 12 is a casing, 13 is a heat exchanger, 14 is a left and right deflection vane for deflecting the flow in the left and right directions in the figure, and 15 is a lever for rotating the flow control member 10.

The operation in the above configuration will be explained. First, the case where the flow control member 10 is located at the position shown in FIG. 2 will be described. In this case, the flow blows out in a nearly horizontal direction as shown in the figure. When the fan 7 rotates in the direction of the arrow around the fan shaft 70, a vortex V is generated near the stabilizer 8. As a result, a flow F is generated and flows out from the discharge port 11. In this case, the flow Fa above the flow control member 10 in the figure continues to flow in the horizontal direction. (The flow from the vortex V originally tends to flow in the direction of rotation of the vortex, that is, in the horizontal direction.) The flow Fb on the lower side of the flow control member 10 interferes with the rear guider 9b when it exits the fan 7. It almost sticks to the rear guider 9b, but because the rear guider 9b has a gradually expanding shape and is attracted by the upper flow Fa, it separates from the rear guider 9b halfway and joins the upper flow Fa. It will blow out horizontally. Next, as shown in FIG. 3, a case where the flow control member 10 is rotated counterclockwise in the figure, that is, a case where the downstream side 10b of the flow control member 10 is brought closer to the guider 9b will be described. In this case, the flow blows out toward the bottom in the figure. First, the flow Fb below the flow control member 10 (the flow sandwiched between the flow control member 10 and the rear guider 9b) is expressed by the rear guider 9b as described above.
However, in this case, due to the bias effect of the first substantially flat surface 10b on the downstream side of the flow control member 10, it completely adheres to the rear guider 9b, and flows in the direction along the rear guider 9b without peeling off. Blow out downwards. On the other hand, regarding the flow Fa above the flow control member 10, as a result of rotating the flow control member 10, this flow control member 10a rotates around the eccentric rotation axis 100, so the portion of the flow control member 10 facing the fan In other words, the head 10a approaches the fan. The distance between the illustrated vortex V and the flow control member 10 is therefore reduced, and the flow Fa therebetween is reduced. As a result, the upper flow Fa is induced by the lower flow Fb, contrary to the above case, and both flow along the guider 9b. Next, as shown in FIG. 4, a case will be described in which the flow control member 10 is rotated counterclockwise more than in the above case. In this case, the flow above the flow control member 10 is
Fa and the lower flow Fb flow in different directions without merging. At this time, first, the lower flow Fb is caused by the flow control member 1 as shown in the figure.
0 and the rear guider 9b becomes narrower, and the bias effect by the first substantially flat surface 10b on the downstream side of the flow control member 10 increases, so that the flow almost completely adheres to the rear guider 9b. It turns out. On the other hand, regarding the upper flow Fa, the distance between the fan 7 and the flow control member 10 increases again, and the flow Fa increases. As a result, the force acting horizontally on the flow Fa increases, and the flow blows out in a horizontal direction. In this case, since the gap between the flow Fa and the flow Fb is the largest, these two flows do not interfere with each other and flow in different directions without merging. Furthermore, by changing the rotation angle of the flow control member 10, the ratio of split flow can be changed arbitrarily.

To summarize the above explanation, when the flow control member 10 is rotated at an angle as shown in Fig. 2, the flow blows out in the horizontal direction, and when it is gradually rotated counterclockwise, the flow gradually decreases. When it is rotated to the position shown in FIG. 3, the flow is deflected almost directly downward. Next, when the flow control member 10 is rotated to the position shown in FIG.
Split into parts and blow out. In other words, it becomes a state of branching. Therefore, by simply rotating the flow control member 10, the flow can be directed downwardly from the horizontal direction, and the flow can also be divided.
Furthermore, the flow control member 10 does not deflect the flow by forcibly bending the flow, but by changing the ratio of the flow above and below the flow control member 10 and using the effect of the flow adhering to the guider 9b. Since the airflow is carried out, the decrease in air volume can be minimized.

As shown in Fig. 5, when this is applied to a wall-mounted heat pump, by moving the lever 15, the lever can be moved horizontally for cooling, downward for heating, and directed toward the wind during heating. If not, by switching to branch flow, a comfortable air conditioning effect can be obtained with a single lever operation, with almost no reduction in air volume.

Next, a case where a communication port 120 is provided in the flow control member 10 as an embodiment of the present invention will be described with reference to FIGS. 6 to 8.

As shown in FIG. 6, the communication ports 120 are bored through the flow control member 10 from the front surface to the back surface, and are provided at regular intervals. The communication port 120 is located between the portion of the flow control member 10 facing the crossflow fan, that is, the vicinity of the head 10a, and the first substantially flat surface 10b on the downstream side of the flow control member. . The reason and effect will be explained below with reference to FIGS. 7 and 8. FIG. 7 shows the surrounding flow and surface pressure distribution when the flow control member 10 is tilted in the direction of horizontal blowing. The dashed arrow indicates the magnitude of negative pressure. FIG. 8 shows the case of downward blowing. In the case of horizontal blowing, as shown in FIG. 7, in the surface pressure distribution, the negative pressure is greatest in the portion facing the crossflow fan of the flow control member where the flow velocity is highest, that is, in the vicinity of the head 10a. Therefore, by using this negative pressure to induce a flow along the opposite surface, the flow changes from a solid line to a flow along the flow control member as shown by a broken line, resulting in the upper flow and lower flow in Figure 7. The merging of flows becomes easier, and the velocity distribution after merging becomes sharp and pointed.

On the other hand, as shown in FIG. 8, in the case of downward blowing, the pressure distribution has the highest flow velocity and the highest negative pressure near the first substantially flat surface 10b on the downstream side of the flow control member. Therefore, in this case, the upper flow changes as shown by the broken line in FIG. 8, the downward merging becomes easier, and the velocity distribution of the downward flow becomes sharp.

As described above, the communication port 12 is provided in the flow control member 10.
By providing 0, the flow velocity distribution in horizontal blowing and downward blowing becomes sharp. As a result, the reach of the blowout flow is extended, and when the blowout flow is an air conditioning flow, the temperature distribution in the air-conditioned room becomes more uniform, and the air conditioning effect becomes greater.

As is clear from the above description, the air blowing device of the present invention includes a cross flow fan, a rear guider whose downstream side is provided with a gradually expanding shape, a stabilizer, and a cross flow fan provided near the fan on the discharge side of the fan. a control member, the flow control member has a head having an arcuate cross-sectional shape, the center of which is located eccentrically from the rotational axis, and a first substantially flat surface on one side on an extension of the head; , the other has a substantially arc-shaped surface to have an adhesion effect, and a second substantially flat surface facing the head and forming an obtuse angle with the substantially flat surface; A communication hole is provided for communicating between a portion of the surface near the head and a portion at or near the intersection of the first substantially flat surface and the second substantially flat surface, and the rotation of the rotation axis is It is possible to deflect the flow from horizontal to almost directly below with only movement, and it is also possible to obtain a split flow state in which the flow is blown out horizontally and downwards separately.Compared to a case where the cross section is a simple arc, The air volume hardly changes under all conditions of deflection and diversion. In addition, in the case of horizontal suction and downward blowing, the negative pressure generated by the flow can be utilized to cause the flow to adhere to a substantially arc-shaped surface and a substantially flat surface that have an adhesion effect (the cross section is arc-shaped). In this case, the surface to which it attaches is 1
Since the blowout velocity distribution becomes sharp and pointed, it is possible to extend the reach of the blowout flow, and when the blowout flow is an air conditioning flow, the temperature distribution in the air-conditioned room is uniform. It is possible to increase the air conditioning effect. Furthermore, since the present invention utilizes the properties of the fluid itself to perform deflection, it is possible to significantly reduce the decrease in air volume. Moreover, since the structure is very simple, it is possible to make equipment to which this blower is applied thinner, which is an excellent effect.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of a wall-mounted heat pump using a conventional blower, FIGS. 2 to 4 are sectional views showing an embodiment of the blower of the present invention, and FIG. A cross-sectional view showing an example of a wall-mounted heat pump using a blower, FIG. 6 is an enlarged perspective view of the flow control member of the blower, and FIGS. 7 to 9 are enlarged views of the flow control member of the blower. FIG. 7... Crossflow fan, 8... Stabilizer, 9... Rear guider, 9b... Rear guider downstream side, 10... Flow control member, 10a... Head, 1
0b...First substantially flat surface, 10c...Substantially arc-shaped surface, 10d...Second substantially flat surface, 11
...Discharge port, 70...Fan shaft, 100...Rotation shaft, 120...Communication port.

Claims (1)

[Scope of Claims] 1. A cross-flow fan that generates a vortex by rotating around a fan axis and generates a flow due to the generation of the vortex, a rear guider whose downstream side is provided with a gradually expanding shape, and a stabilizer. , a columnar flow control member that rotates around a rotation axis provided near the vortex of the crossflow fan on the discharge side of the crossflow fan, and the flow control member has a head having an arcuate cross-sectional shape. The center of the head is located eccentrically from the rotation axis, one side on an extension of the head has a first substantially flat surface, and the other has a substantially arcuate surface to have an adhesion effect, and a second substantially flat surface that faces the head and forms an obtuse angle with the substantially flat surface; a portion of the substantially arcuate surface that is close to the head; and a second substantially flat surface that is close to the head; An air blowing device provided with a communication port that communicates between the intersection of the surface and the second substantially flat surface or a portion near the intersection. 2. The air blowing device according to claim 1, wherein a plurality of communication ports are provided at substantially constant intervals from each other.