JP4253376B2 - Air passage flow control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is used to adjust the amount of air flowing in a passage through which a large amount of air flows.
[0002]
[Prior art]
As a conventional flow control device used for an air passage having a large flow area, a flow control valve that is mechanically driven by an electric device is generally used. However, if the distribution area is large, the flow rate adjusting device is also large and expensive, and it may not be installed in terms of space.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to make it possible to adjust the flow rate of air by simple means without using the mechanically driven flow rate control valve.
[0004]
[Means for Solving the Problems]
Of the means for solving the above-mentioned problems, the first means is, as described in claim 1, provided with a water level adjusting device for supplying and discharging water to the water tank, and the water surface and the ventilation interval above the water surface in the water tank. an air passage which is interposed provided, the air supply means for feeding air into the room provided air passage, the flow regulating device of air passages you adjust the ventilation gap by level adjustment of the water tank, the air supply The means can be operated so as to be opposite to the air supply direction of the air supply means in the intake operation, and a branch pipe of an air passage is provided on the water level adjusting device side of the air supply means. During the intake operation, air is taken in from the branch pipe and the passage interval via the air passage, and the air supply means is operated so as to be opposite to the air supply direction of the air supply means in the intake operation. When the branch through the air passage It characterized by distributing the air to the said vent gap between. According to the means of this, air means the air flow rate varies ventilation gap is adjusted by level adjustment of the water tank while pumping operation. Further, the air supply means can be the one in which the air supply direction is reversed. In this way, the air supply means can be used as an air distribution mechanism that distributes the air flow to the branch pipe and the ventilation interval side.
[0006]
Second means, as described in claim 2, in claim 1, the water surface of the water tank, characterized in that floated浮板valve facing the bottom of the air passage. According to this means, the floating plate valve prevents the water surface from fluctuating due to the air flow.
[0008]
Third means, as described in claim 3, in claim 1 or 2, as a water level control device of the tub, the water source tank provided outside the aquarium, can convert flow direction of the water source tank and the water tank In the air flow rate adjusting device that is connected by a pump circuit and adjusts the water level by supplying water to or out of the water tank, the pump circuit includes a one-way pump and first to fourth valves, and the first valve And one end of the fourth valve is connected to the water tank via a water conduit, and the other end of the first valve is connected to one end of the third valve and the inflow side of the one-way pump via the water conduit. The other end is connected to a water source tank via a water conduit, the other end of the fourth valve and the outflow side of the one-way pump are connected to one end of the second valve via a water conduit, and the other end of the second valve is connected to the other end. It is connected to a water source tank through a water pipe . According to this means, the water level in the aquarium is increased / decreased with a pump to adjust the water level , and when it is desired to lower the water level , the first valve and the second valve are opened and the other valves are closed to drive the one-way pump. Then, the water in the water tank is returned to the water source tank through the first valve one-way pump and the second valve. When you want to raise the water level, open the third valve and the fourth valve, close the other valves, and drive the one-way pump, the water in the water source tank 22 passes through the third valve, the one-way pump and the fourth valve. Enter the aquarium.
[0009]
Fourth means, as described in claim 4, in claim 1, 2 or 3, as the water level adjusting device of the water tank, to connect the water supply pipe and an overflow pipe having an on-off valve in the water tank, the on-off valve The water level of the aquarium is adjusted by opening / closing and raising / lowering the outlet position of the overflow pipe. According to this means, the water level of the water tank can be adjusted without using a pump.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a water tank, a water supply pipe 2 and a flexible overflow pipe 3 are connected to the water tank 1, a stop valve 2 a is provided in the water supply pipe 2, and an outlet 3 a at the end of the overflow pipe 3 is The water level adjusting device 4 is formed by the stop valve 2 a and the overflow pipe 3. The water surface of the water tank 1 is indicated by L, and the height of the water surface L, that is, the water level is regulated by the height of the outlet 3a.
[0011]
A cover 1a is attached to the upper part of the water tank 1, and an air inlet 1b communicating with the atmosphere is provided on a side portion of the cover 1a. An intake fan 8 for sending upward is provided. A lower end 5 a of the air passage 5 faces the water surface L, and a ventilation interval 9 is formed between the lower surface 5 a and the water surface L. In the figure, reference numeral 5 b denotes a branch pipe of the air passage 5, which is provided as necessary, and serves as an air passage that joins the air passage 5. When the air passage 5 is an air supply path for sending conditioned air into the room, the branch path 5b is a return air path that returns a part of the air from the room. The outside air purified by a filter (not shown) is guided to the branch path 5b, mixed with the air flowing through the air passage 5, and then guided to an air conditioner (not shown).
[0012]
In the apparatus of FIG. 1, when the height of the water outlet L is changed by changing the height of the outlet 3a while operating the intake fan 8, the ventilation interval 9 changes and the air volume is adjusted.
[0013]
As a modification of this embodiment, the air supply direction of the intake fan 8 can be reversed, and in this way, the air distribution that distributes the air flow to the branch pipe 5b and the ventilation interval 9 side. Available as a mechanism.
[0014]
Next, the apparatus of FIG. 2 is a technique related to the present invention, which is a cooling tower for cooling and recirculating hot water used for cooling a high-temperature fluid with air. Contact-type wet water coolers 11 and 11 are installed to face each other, hot water spraying tanks 12 and 12 are provided on the upper side, and louvers 13 and 13 are provided on the outer side. An air passage 14 is formed between the opposing surfaces of the wet water coolers 11, 11, and a dry water cooler 15 is installed below the air passage 14. The dry water cooler 15 is for first cooling the hot water and is formed in a mountain shape, and has a passage for the hot water and a gap through which cooling air passes.
[0015]
The hot water that has cooled the condenser of the air conditioner (not shown) is sent by the hot water pipe 16, branched to the pipes 16 b and 16 c by the three-way valve 16 a, and the hot water passing through the pipe 16 b is introduced into the top 15 a of the dry water cooler 15. Then, it passes through the water coolers 15 and 15 and is sent from the lower end portions 15b and 15b to the hot water spray tank 12 through the pipes 17 and 17, respectively. The other pipe 16 c branched from the three-way valve 16 a opens directly on the hot water spray tank 12. In this apparatus, both side surfaces of the air passage 14 parallel to the paper surface are closed by other wet water coolers or shielding plates, and therefore the lower end 14 a of the air passage 14 is the lower end of the dry water cooler 15. 15b, 15b and the other wet water cooler or the lower end of the shielding plate are formed in a square shape. An intake fan 18 is installed at the discharge port 14b at the upper end of the air passage 14, and sucks the outside air through the louver 13 and the wet water cooler 11 as indicated by the white arrow, so that the hot water falling from the hot water spraying tank 12 is removed. Cooling. On the other hand, the dry water cooler 15 cools the hot water passing through the dry water cooler 15 by the outside air flowing as indicated by the black line arrows through the ventilation interval 19 between the lower end 14a of the air passage 14 and the water surface L. To do.
[0016]
The dry water cooler 15 acts as an air heater for the air passing through the ventilation interval 19 because it is hotter than the outside air, and the heated air is mixed with the high humidity air passing through the wet water cooler 11. Thus, the relative humidity is lowered, and when the outside air is at a low temperature, the air coming out from the discharge port 14b is prevented from condensing into a white smoke state. And by changing the ratio of the amount of outside air passing through the wet water cooler 11 and the amount of outside air passing through the dry water cooler, the humidity of the air coming out from the discharge port 14b can be changed, and a white smoke state is likely to occur. In winter and rainy season, the position of the water surface L is lowered to increase the ventilation interval 19, but in summer when there is no risk of white smoke, the water surface L is raised to block the ventilation interval 19 and wet water with high cooling action The entire amount of outside air is passed through the cooler 11.
[0017]
The water level adjustment of the water surface L is performed by the water level adjustment device 20. The apparatus 20 includes a bidirectional pump 21, a valve 21a, and a water source tank 22, and rotates the pump 21 in either direction to increase or decrease the water in the water tank 10. In the figure, 22a is an outside air communication path, and 22b is a water supply pipe.
[0018]
FIG. 3 shows another water level adjusting device 23, in which a one-way pump 24 and valves 24a to 24d are connected between a water tank 10 and a water source tank 22 as shown. When the water level L is to be lowered, the valves 24a and 24b are opened and the other valves are closed and the one-way pump 24 is driven. The water in the water tank 10 is returned to the water source tank 22 via the valve 24a, the pump 24 and the valve 24b. It is. When it is desired to raise the water level L, the valves 24c and 24d are opened and the other valves are closed and the pump 24 is driven. The water in the water source tank 22 enters the water tank 10 through the valve 24c, the pump 24 and the valve 24d.
[0019]
Next, in the embodiment shown in FIG. 4, an air passage 31 partitioned by a partition wall 30 is provided at the top of the water tank 1, and a floating plate valve 32 is floated on the water surface. The water level in 1 is adjusted to change the position of the floating valve 32, thereby changing the ventilation interval 9 and adjusting the air flow rate. If the water surface is exposed, the water surface under the partition wall 30 is fluctuated by the air flow, and the air flow rate is also fluctuated, but this inconvenience can be avoided by providing the floating plate valve 32.
[0020]
In addition, this floating plate valve 33 can be used also in the water tank of FIGS.
[0021]
In the embodiment of FIG. 5, a float 35 is floated in the water tank 1, an air passage 36 is connected to the upper part of the water tank 1, and a valve guide hole 37 is provided in the upper part of the water tank 1 on the lower surface of the air passage 36. A flow rate adjusting valve 38 is provided so as to be movable up and down, and the flow rate adjusting valve 38 is connected to a float 35. The water tank 1 and the passage 36 are communicated with each other through a valve guide hole 37. If the water level in the water tank 1 changes, the flow rate adjusting valve 38 moves up and down together with the float 35, changes the flow interval 39, and the air flow rate changes.
[0022]
【The invention's effect】
As apparent from the above description, according to the means of claim 1, when the air supply means is in the exhaust operation, the air flow rate is adjusted by changing the ventilation interval by adjusting the water level in the water tank. Further, the air supply means can change the air supply direction to the direction opposite to the intake direction, and by doing so, it can be used as an air distribution mechanism that distributes the air flow to the branch pipe and the ventilation interval side.
[0024]
According to the third aspect of the present invention, there is an advantage that the fluctuation of the water surface is prevented by the floating plate valve and the air flow is stabilized.
[0025]
According to the third aspect of the present invention, the water level is adjusted by increasing / decreasing the amount of water in the water tank with a pump, and when it is desired to lower the water surface, the first valve and the second valve are opened, and the other valves are closed and the one direction is set. When the pump is driven, the water in the water tank is returned to the water source tank through the first valve one-way pump and the second valve. When you want to raise the water level, open the third valve and the fourth valve, close the other valves, and drive the one-way pump, the water in the water source tank 22 passes through the third valve, the one-way pump and the fourth valve. Enter the aquarium.
[0026]
According to the means of Claim 4 , there exists an advantage which can adjust the water level of a water tank easily.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention . FIG. 2 is a longitudinal sectional view showing a technique related to the present invention . FIG. 3 is a layout view showing an example of a water level adjusting device. FIG. 5 is a longitudinal sectional view showing a second embodiment of the present invention. FIG. 5 is a longitudinal sectional view showing the third embodiment.
1, 10 Water tank 3 Overflow pipe 4, 20, 23 Water level adjusting device 5, 14, 31, 36 Air passage 8 Air supply fan 9, 19, 39 Ventilation interval 11 Wet water cooler 15 Dry water cooler (air heater)
21 Reversible pump 24 One-way pump 32 Floating plate valve

Claims (4)

A water level adjusting device for supplying and discharging water is provided in the water tank, an air passage is provided above the water surface in the water tank with an air gap between the water surface, and air supply means for sending air into the air passage is provided in the air passage. provided, the flow rate adjustment device air passage you adjust the ventilation gap by level adjustment of the aquarium,
The air supply means can be operated in the direction opposite to the air supply direction of the air supply means in the intake operation, and a branch pipe of an air passage is provided on the water level adjusting device side of the air supply means, and the air supply means When the air means is in the intake operation, air is taken in from the branch pipe and the passage space through the air passage so that the air supply means is opposite to the air supply direction of the air supply means in the intake operation. An air passage flow rate adjusting device that distributes air to the branch pipe and the ventilation interval through an air passage when the vehicle is in operation . 2. The air passage flow control device according to claim 1, wherein a floating plate valve facing the lower portion of the air passage is floated on the water surface of the water tank . In Claim 1 or 2 , as a water level adjusting device for the water tank, a water source tank is provided outside the water tank, connected by a pump circuit capable of changing the flow direction of the water source tank and the water tank, and water is supplied to or discharged from the water tank. In the air flow rate adjustment device that adjusts the water level by letting
The pump circuit includes a one-way pump and first to fourth valves, one end of the first valve and the fourth valve being connected to a water tank via a water pipe, and the other end of the first valve is a water pipe. The other end of the third valve is connected to the water source tank via the water pipe, and the other end of the fourth valve and the outflow side of the one-way pump are A flow rate adjusting device for an air passage, characterized in that the second valve is connected to one end of a second valve via a water conduit, and the other end of the second valve is connected to a water source tank via a water conduit . The water level control device according to claim 1, 2, or 3, wherein a water supply pipe having an on-off valve and an overflow pipe are connected to the water tank as the water level adjusting device, and the water level of the water tank is determined by opening and closing the on-off valve and raising and lowering the outlet position of the overflow pipe. and adjusting the flow rate adjusting device of the air passage.

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