JPS621504B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flow direction control device that is installed at an air outlet of an air conditioner or the like and deflects a flow from an air source in an arbitrary direction.

An example in which a conventional flow direction control device is used in a wall-mounted heat pump will be explained. In FIG. 1, 1 is a cross flow fan, 2 is a stabilizer, 3 is a rear guider, and 4 is a flow direction control device composed of a plurality of louvers, and these four constitute a blowing device. 5 is a heat exchanger,
6 is a casing. When the crossflow fan 1 rotates, the flow is sucked in through the heat exchanger 5, and the flow direction is changed by the flow direction control device 4 and exits. Originally, in heat pumps,
In order to equalize the temperature distribution in the air-conditioned room, it is desirable to control the blowing 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 looper number 4 almost blocks 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, 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 hot air being blown out, it is necessary to have a function to blow out a certain amount of hot air downwardly and the other part horizontally, that is, a dividing function. It has been impossible to provide the above-mentioned flow dividing function in conventional flow direction control devices. Further, the above-mentioned diversion function is effective only when the air volume is large, so when the air volume is small, a function that switches to a downward blowing state instead of a diversion is necessary to maintain comfort.

The present invention eliminates these conventional drawbacks, and allows the flow to be significantly deflected with almost no change in the volume of air blown out, as well as making it possible to perform diversion operation, and to switch between the diversion operation and downward blowing according to the volume of blown air. It is designed to switch automatically.

In order to achieve this object, the present invention forms one side of the longitudinal wall of the air outlet passage with a flat wall and the other side with a curved wall with a gradually expanding shape, so that the airflow flow is substantially parallel to the longitudinal direction of the air outlet passage. A control member is provided, and the flow control member 16 has one wall of the blowout passage as a flat wall, and a downstream end of the wall opposite to the flat wall as a curved wall with a gradually enlarged shape, so as to control the flow flowing through the blowout passage. A bias protrusion for deflecting a portion toward the curved wall is provided on the plane wall, and a downstream side of the bias protrusion is configured as a substantially planar wall, and the blowout passage is provided with a bias protrusion that is substantially parallel to the plane wall and substantially parallel to the flow. A columnar flow control member rotating about a perpendicular rotation axis is provided, and the cross section of the flow control member is
The head has a substantially arc shape with the center of the arc being eccentric from the rotation axis, one side of the head on an extension line has a first substantially flat surface, and the other has a surface having an adhesion effect. and a second substantially flat surface facing the head and forming an obtuse angle with the substantially flat surface, and a motor for rotating the flow control member; A control circuit is provided for associating the airflow rate with the airflow rate of the airflow source.

With this configuration, the flow adheres to or separates from the curved wall in accordance with the rotation of the flow control member, resulting in a change in the blowing direction with almost no change in the air volume. Further, by rotating the flow control member, a diversion operation is possible in which the flow is divided into two directions, horizontally and downwardly. Further, by the action of the control circuit, the amount of air blown out is related to the rotation of the flow control member, so that when the amount of air is large, a diversion operation is performed, and when the amount of air is small, a downward blowing operation is performed. .

Hereinafter, a case will be described in which an embodiment of the present invention is applied to a heat pump air conditioner. In a heat pump air conditioner, it is necessary to blow the air downward in order to equalize the temperature distribution during heating. The aforementioned shunting operation is also necessary to increase comfort. However, although the diversion operation is absolutely necessary when the amount of flow is large, it is not effective when the amount of flow is small because the amount blown downward becomes too small. Therefore, when the air volume changes from strong to weak, it is necessary to maintain comfort by providing a function to automatically change the blowing direction from branch to downward blowing.

This will be explained below using FIGS. 2 to 7 of the drawings. In this case, a case will be described in which a cross flow fan is used as the air source. In the figure, 7 is a casing, 8 is a suction grill, 9 is an operation switch, 9a is an air volume changeover switch, and 9b is an airflow direction changeover switch. 10 is a motor (not shown). Reference numeral 11 indicates a cross flow fan as an air blowing source, 12 indicates a stabilizer, 13 indicates a flat wall provided downstream of the stabilizer, 14 indicates a rear guider, and 15 indicates a curved wall provided downstream of the rear guider, which is formed into a gradually expanding shape. , 100 is a blowout passage, and 16 is a flow control member, which rotates around a rotating shaft 17. In addition,
The motor 10 is connected to the rotating shaft 17. The flow control member 16 includes a head 16a having a substantially circular arc shape with a radius r whose center O is eccentric from the rotating shaft 10 by ε, and a first bias acting portion (first substantially flat surface) 10b. , a flow dividing action part (a surface having an adhesion effect) 16c and a second bias action part (a second substantially flat surface) 16d. 18 is a heat exchanger, 19 is a control circuit, which controls the rotation of the motor 10 according to the setting of the operation switch 9, and controls the flow control member 1.
This is to set the position No. 6. This control circuit 1
9 sets the position of the flow control member 16 in accordance with the setting of the operating switch 9 as follows.

A flowchart for carrying out the above control is shown in FIG. In this case, a step pin motor is used as the motor, and the configuration shown in FIG. 8 is used. Here, 20 is a CPU, 21 is a ring counter, and 22 is a driver.

According to the configuration of this embodiment, the flow control member 16
The following operations are performed depending on the setting position.
First, when it is set in a horizontal position, as shown in Figure 4, the cross flow fan 1 is used as an air source.
When 1 is rotated, a vortex V is generated and a flow is generated. In this case, the flow Fa above the flow control member 16 in the figure continues to flow in the horizontal direction. (The flow from the cross-flow fan originally tends to go in the horizontal direction.) The flow Fb below the flow control member 16 interferes with the curved wall 15 when it exits the cross-flow fan 11, causing a curved surface. However, the curved wall 15 has a gradually expanding shape, and the flow Fb on the lower side is similar to the flow on the upper side.
As a result of being attracted by Fa, it separates halfway from the curved wall 15, merges with the upper flow Fa, and blows out in the horizontal direction. Next, when the downward blowing position is set, as shown in FIG. 5, the flow Fb on the lower side of the flow control member 16 completely adheres to the curved wall 15 due to the bias effect of the bias acting part 16b. , flows in the direction along the curved wall 15 without peeling off, and blows out downward. On the other hand, regarding the flow Fe on the upper side of the flow control member 16, as shown in FIG. 5, the center O is located at a position eccentric from the rotation axis 17.
The distance h between 6a and the plane wall 13 becomes smaller.
As a result, the amount of Fa decreases, and contrary to the case shown in FIG. 4, it is attracted by the flow Fb below, and both flow along the curved wall 15. Next, when the branching position is set, as shown in FIG. 6, the lower flow Fb completely adheres to the curved wall 15 and flows out due to the action of the second bias acting portion 16d. In the upper flow Fa, the distance h becomes large again and the flow rate increases. As a result, the force that forces the flow Fa to go horizontal increases, and the flow blows out in a horizontal direction. In this case, since the distance between the flow Fa and the flow Fb is the largest, these two flows no longer interfere with each other and flow in separate directions without merging.

Further, in the configuration of the present invention, the flow control member 1
6 does not deflect the flow by forcibly bending the flow, but changes the ratio of the flow above and below the flow control member and deflects the flow by using the effect of the flow adhering to the curved wall 15. Therefore, deflection can be performed with almost no change in air volume.

Although the flow is deflected by the above-mentioned action, desired blowing conditions can be obtained by arbitrarily setting the air volume and direction using the operation switch 9. If the airflow direction is set to branch when the airflow rate is low, the control circuit 19 is configured to automatically blow downward, so that comfortable airflow conditions can always be obtained.

In addition, when a cross flow fan is used as the air source as in this embodiment, the flow control member 1
Since the head 16a of 6 has an almost arc shape,
Even if the flow control member 16 is placed close to the cross flow fan 11, the air volume does not decrease, and the space can be made very small. In addition, the flow control member 16 has the function of stabilizing the vortex V, and even when the rear guider 14 is deformed from the shape of a normal cross flow fan as in the present invention, it prevents the vortex V from being disturbed and reduces the air volume. To prevent.

As described above, in the flow direction control device of the present invention, one side of the longitudinal wall of the blowout passage is formed by a flat wall and the other side is formed by a curved wall having a gradually enlarged shape, and the wall is formed substantially parallel to the longitudinal direction of the blowout passage. providing a flow control member;
The flow control member has a head 16a that rotates around a rotation axis 17 and has a substantially arc-shaped head 16a with a radius r and a center O eccentric from the rotation axis by ε;
It is made up of a bias acting part 16b, a flow dividing part, and a second bias acting part facing the head, and is provided with a motor for rotating the flow control member, and the rotation of the motor and the blowing source are The following effects can be achieved by associating the amount of air with the amount of air.

1. The blowout angle can be changed significantly without changing the air volume, and the airflow can be divided into two directions to achieve a great air conditioning effect.

2. The direction of the blowout can be automatically changed according to the blowout air volume, and in particular, in the case of diversion operation, by automatically switching to diversion when the airflow is strong and to downward blow when the airflow is weak, You can always perform comfortable speech bubbles.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view when a conventional flow direction control device is applied to a wall-mounted heat pump, Fig. 2 is a perspective view when the flow direction control device of the present invention is applied to a wall-mounted heat pump, and Figs. 6 is a cross-sectional view taken along the line A-A in FIG. 2, FIG. 7 is a flowchart of the control circuit, and FIG. 8 is a diagram showing the drive section of the motor. 10...Motor, 11...Cross flow fan, 12...Stabilizer, 13...Plane wall,
14...Rear guider, 15...Curved wall, 16...
...Flow control member, 16a...Head, 16b...Bias action section, 16c...Diversion action section, 16d...
...Second bias action section, 17... Rotation shaft, 19
...Control circuit, 1000...Flow control section.

Claims (1)

[Scope of Claims] 1. A flow control section that is provided at the outlet of a blow source that blows out a flow, has a deflection plate, and performs wide-angle deflection and diverting operation, and in the case of diverting operation, the flow control section A flow direction control device provided with a control circuit that sends a drive signal to the flow control unit so that the air flow is in a divided flow state when the air flow is larger than a predetermined value, and into a single jet flow state when it is smaller, according to the air flow. . 2. The flow control unit is configured such that one wall of the blowout passage is a flat wall, a downstream end of the wall opposite to the flat wall is a curved wall with a gradually enlarged shape, and a part of the flow flowing through the blowout passage is directed to the curved wall. A bias protrusion is provided on the plane wall to deflect the bias towards the flow, a downstream side of the bias protrusion is formed into a substantially planar wall, and the blowing passage has a rotation axis substantially parallel to the plane wall and substantially perpendicular to the flow. A columnar flow control member that rotates as a center is provided, and the cross section of the flow control member is approximately arc-shaped with the center of the arc being at an eccentric position with respect to the rotation axis, and one side on the extension line of the head. has a first substantially planar surface, the other has a surface having an adhesion effect, and a second substantially planar surface facing the head and forming an obtuse angle with the substantially planar surface. A flow direction control device according to claim 1. 3. The flow direction control device according to claim 2, wherein a cross flow fan is used as the air source, and the downstream side of the stabilizer of the cross flow fan is configured as a flat wall, and the downstream side of the rear guider is configured as a curved wall.