JPH01305247A - Stream deflecting device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a flow deflection device that is installed at an air outlet or the like of an air conditioner and deflects a flow from an air source over a wide angle.

Prior Art A conventional flow deflection device of this type has a flow path a3 having an inlet 34a and an outlet 34b, as shown in FIGS. 9 and 10.
The flow was deflected by rotating a plurality of blades 35 (which rotate around a shaft 36) provided near the outlet 34b.

Problems to be Solved by the Invention However, in the above configuration, when the blade a5 is tilted, the flow collides with the blade, resulting in a pressure loss. For this reason, when attempting to deflect the flow significantly, there was a problem in that the flow rate was significantly reduced (the flow rate was reduced to half when the flow was deflected by 60°).

The present invention has been made to solve these conventional problems, and aims to deflect the flow over a wide angle with almost no reduction in air volume.

Means for Solving the Problems In order to solve the above problems, the flow deflection device of the present invention comprises:
A passage through which fluid passes, a nozzle located at the end of this passage and smaller than this passage, a restraining wall with an enlarged circular cross section located downstream of this nozzle, and a restraining wall provided near the downstream end of this restraining wall. , each vane comprising a plurality of deflection vanes rotating about an axis substantially perpendicular to the direction of flow;
The length of the restraining wall is shorter than the depth in the flow direction of the fluid until the jet width of the fluid from the nozzle is diffused to become the same width as the restraining wall, and each blade of the plurality of deflection blades is The structure is such that the closer the flow is to the side where the flow is deflected, the larger the rotation angle becomes.

Effect: With the above-described configuration, the present invention allows the flow constricted by the nozzle /L/ to be deflected upstream in the direction of inclination of the deflection blades upstream of the plurality of deflection blades. This is possible because the restraining wall is expanding.In other words, if the restraining wall is not expanded as in the conventional example, the upstream deflection is obstructed by the wall surface.) Collision with the blade is prevented. By minimizing the reduction, it is possible to perform wide-angle deflection with little pressure loss.

Example Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a passage with a circular cross section through which fluid can pass, and a nozzle 2 whose width is smaller than that of the passage 1 due to a restriction a is provided at the downstream end of this passage 1. There is. A restraining wall 4 having a width H larger than the width W of the nozzle is formed downstream of the nozzle 2, and near the downstream end of the restraining wall 4, a plurality of deflection plates rotating around a shaft 6 are formed. 3, wherein the blades 5 are arranged parallel to each other, and
The plurality of deflecting blades 5 are attached to the rotating shaft 6 in such a manner that the inclination angle a increases as the direction of the flow, that is, the left side of the figure increases.
The distance between the connecting device 13 and the connecting device 13 is configured to become smaller toward the left side of the figure.

Here, the length 4 of the restraining wall 4 is formed to be shorter than the distance over which the flow of width W emerging from the nozzle diffuses to become the width H of the restraining wall. (approximately W/2 is appropriate) 7 is a support frame that supports a plurality of deflection blades 5, and is formed so that the plurality of deflection blades 5 rotate around r'a8 along the flow direction. has been done.

Further, the overall width of the plurality of blades 5 is formed to be almost the same as that of the restraining wall H, and is configured to rotate along the restraining wall 4 by the support frame 7. However, the overall width I does not necessarily have to be the same as the width H of the restraining wall, and the nozzle width W
The characteristics of the present invention can be obtained as long as the range is larger and smaller than the width H of the restraining wall. 9 is a motor A110 that rotates the shaft 8 along the flow direction; a link ill that rotates the deflection vane 5 around the shaft 6; 11 is a cam that moves the link mechanism 10 up and down; 12 is a cam that rotates the cam 11; This is a rotating motor B. As mentioned above, 13 is a coupling device for simultaneously rotating the deflecting blades 5 in the same direction.

In the above configuration, when the blades 5 are moved to the left as shown in Fig. 1, the flow is largely deflected from upstream to the left as shown in Fig. 1, and a large deflection angle θ is obtained with little reduction in air volume. I can do it. The reason why this phenomenon occurs is explained in FIG. In Fig. 3, the flow A in the central part of the flow exiting from the nozzle 2 does not have much upstream deflection, and the blade 5
collide with As a result, the pressure near the portion indicated by P in FIG. 3 increases. Due to this influence, the flow on the left side of A is pushed by the pressure of the smoke B and escapes to the left side in Figure 3, generating a leftward vector. As a result, upstream deflection occurs and the flow direction follows the inclination of the blades 5, reducing the degree of collision. This phenomenon is sequentially transmitted to the left side, and the G flow at the left end undergoes a very large upstream deflection. On the other hand, since the deflection blade 5 is configured such that the inclination angle α increases toward the left, the flow flows along the deflection blade 5 with almost no resistance, and the blowout flow H causes almost no loss in air volume. greatly deflected. Here, the upstream deflection of the flow G at the left end is the expansion rate H/from the nozzle width W up to a certain size.
The larger W is, the larger it becomes.

Experimental data in this case is shown in FIG. The horizontal axis of Fig. 4 shows the expansion ratio H/W of the restraining wall with respect to the nozzle width W2.
The vertical axis shows the deflection angle θ. The deflection angle in this case indicates the deflection angle when the air volume is reduced by 10% by tilting the blades 5 with respect to the air volume when the nod of the blades 6 is 0°.

In this figure, it can be seen that as H/W is increased from 1, the deflection angle θ rapidly increases and saturates when H/W is about 3. That is, there is a limit to the upstream deflection, and its value is up to an expansion rate of approximately three times the nozzle width. Next, as shown in FIG. 5, when the cam 11 is rotated by the motor 12, the inclination angle of the deflecting blade 5 changes due to the action of the link mechanism 10. Further, as shown in FIG. 6, when the support frame 7 is rotated by the motor 9 from the state shown in FIG. 1, the flow rotates in the circumferential direction while maintaining the deflection angle shown in FIG. That is, as described above, the deflection blade 5
By controlling the inclination angle of the support frame 7 and the rotation angle of the support frame 7, it becomes possible to send the flow in all directions.

Next, an example in which the present invention is applied to an air conditioner will be explained using FIGS. 7 and 8. In the figure, 14 is the indoor unit body of the air conditioner, 15 is the static suction port, 16 is the fan suction port, 17 is the fan, 18 is the heat exchanger, 19 is the flow passage, 2o is the nozzle, 21 is the throttle, and 22 is the A restraining wall, 23 a plurality of deflection blades, 24 a shaft, 25 a plurality of deflection blades 2
3 in the same direction at the same time, 26 is a support frame for rotating the entire deflection blade, 27 is a support frame 26
The rotation is transmitted through the motor shaft 28 by the motor that rotates the motor. 29 is a fan motor, 30 is a fan shaft, 31
32 is a support shaft that supports the rotating frame 26, and 32 is a deflection blade 23.
This is a link mechanism that changes the inclination angle.

In the above configuration, the flow entering from the suction port 15 flows outward by the fan 17, is heated or cooled by the heat exchanger 18, exits from the nozzle 20, and is deflected at a wide angle by the deflection vane 23. Further, by rotating the entire deflection blade using the motor 27, it becomes possible to direct the flow not only in the left and right directions in the figure but in all directions. This makes it possible to send hot or cold air to all locations in the room without changing the air volume, making it possible to achieve comfortable air conditioning.

Effects of the Invention As described above, the flow deflection device of the present invention provides the following effects.

(1) Since the flow is narrowed by the nozzle and is deflected upstream within the enlarged restraining wall and then deflected by a plurality of deflection blades, it is possible to deflect the flow over a wide angle with almost no reduction in air volume.

AC) When the present invention is applied to an air conditioner, the air conditioning flow can be sent to every corner of the room without substantially reducing the air volume, that is, the air conditioning capacity, and comfortable air conditioning can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a side cross-sectional view of a flow deflection device according to an embodiment of the present invention, Fig. 2 is a front view of the same device, Fig. 3 is an enlarged view of main parts of the same device, and Fig. 4 is a characteristic diagram of the same device. , Figures 5 and 6
The figure is a side sectional view explaining the operating state of the device, FIG. 7 is a side sectional view of an air conditioner to which the present invention is applied, FIG. 8 is a front view of the same device, and FIG. 9 is a conventional flow deflection device. The side sectional view and FIG. 10 are front views of the same device. 1... passage, 2... nozzle, 4...
... Restriction wall, 5 ... Plural deflection blades, 6.
...An axis almost perpendicular to the direction of flow. Name of agent: Patent attorney Toshio Nakao and one other person
Ichitodani 2-Kuzuru 4--J Ritsuka! Figure 3 Figure 4 +23 H/w - Figure 5 Figure 6 Figure 7? 9 Figure S

Claims (1)

[Claims] a passage through which fluid passes; a nozzle located at the end of the passage and smaller than the passage; a restraint wall with an enlarged circular cross section located downstream of the nozzle; provided near the downstream end of the restraint wall; Each vane includes a plurality of deflection vanes rotating about an axis substantially perpendicular to the flow direction;
The length of the restraining wall is shorter than the depth in the flow direction of the fluid until the jet width of the fluid from the nozzle is diffused to become the same width as the restraining wall, and each blade of the plurality of deflection blades is A flow deflection device in which the rotation angle increases as the device is located on the side where the flow is deflected.