JP3739461B2 - Charge / exhaust device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a charge / exhaust device for charging air into an air tent of an air tent, an air boat's air cylinder, etc., and forcibly exhausting air such as an air tent's air column or an air boat's air cylinder. .
[0002]
[Prior art]
Conventionally, a charging device (blower) has been used to charge air into the air column of an air tent.
In addition, not only charging but also a charging / discharging device having a function of forcibly exhausting air in the air column is known.
[0003]
As shown in FIG. 2, the charge / exhaust device used conventionally is divided into an intake chamber C ₁ having an intake port 2 and an exhaust chamber C ₂ having an exhaust port 3. By installing a motor M between ₁ and the exhaust chamber C ₂ and operating the motor M, intake and exhaust are performed. That is, the air (A ₁ ) sucked into the intake chamber C ₁ from the intake port 3 is sucked by the motor M (A ₂ ) and sent into the exhaust chamber C ₂ (A ₃ ). Is exhausted from the exhaust port 3.
[0004]
When the air tent is charged using the charge / exhaust device, the exhaust port of the charge / exhaust device and the charge port of the air tent are connected by a hose, and the high-pressure air exhausted from the exhaust port is Send it into the air column of the tent.
Also, when exhausting the air tent using the charge / exhaust device, connect the intake port of the charge / exhaust device and the exhaust port of the air tent with a hose to suck the air in the air tent air column. Force exhaust.
[0005]
[Problems to be solved by the invention]
However, in the case of exhaust using the conventional charge / exhaust device 1 ′, as shown in FIG. 7, when the air is sucked from the intake port 2 ′, the air column T is crushed by the atmospheric pressure f and the air is exhausted. There is often a phenomenon in which the sheets forming the pillars are in close contact with each other and the air passage is blocked. When this phenomenon occurs, the air in the air column cannot be exhausted no matter how much suction is applied. Stop the charging / exhaust device once to stop suction, release the closely attached sheets, and start suction again. In other words, it was necessary to push the air pocket in the air column by hand and send it to the exhaust port.
[0006]
Moreover, in the charge / exhaust device configured as described above, the heat generated from the motor is cooled when the air in the intake chamber moves to the exhaust chamber. Since the air intake port is only the air intake port 2 ′, the air supply to the air intake chamber is not performed unless the air in the air column is exhausted, and the cooling action of the motor does not appear.
[0007]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a charge / exhaust device capable of shortening the time of exhaust work especially during exhaust and improving workability.
[0008]
[Means for Solving the Problems]
The charge / exhaust device of the present invention made to solve the above-described problems is a charge / exhaust device having an intake chamber provided with an intake port and an exhaust chamber provided with an exhaust port. It is characterized by forming a pressure inlet.
[0009]
The secondary pressure inlet referred to in the present invention is to take in air into the intake chamber in the same manner as the intake port. To do. When the charge / exhaust device is operated in a normal state, the air is mainly sucked from the intake port, and there is almost no intake from the secondary pressure intake port.
[0010]
If the secondary pressure inlet having the above function is a hole having a very large diameter, even if the charge / exhaust device is operated in a normal state, the air is sucked from the secondary pressure inlet. The intake power from will be reduced.
Therefore, the secondary pressure inlet does not substantially inhale when operating in a normal state, and can sufficiently inhale when intake from the intake becomes insufficient. Is desirable.
Specifically, a hole different from the air inlet is provided in the air intake chamber, the hole is covered with a net-shaped cover, and the secondary pressure inlet is an aggregate of micro holes.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The charge / exhaust device of the present invention will be described below with reference to the drawings.
FIG. 1 is a front view showing an example of the charge / exhaust device of the present invention, and FIG. 2 is a cross-sectional view schematically showing an internal mechanism of the charge / exhaust device shown in FIG. Also, in the figure, reference numeral 1 is the charge / exhaust device of the present invention, reference numeral 2 is an intake port, reference numeral 3 is an exhaust port, reference numeral 4 is a secondary pressure inlet, reference numeral 5 is an ON-OFF switch, and reference numeral 6 is a charge / exhaust device 1 A pilot lamp, which indicates that it is in an operating state, is a handle used to carry the charge / exhaust device 1.
[0012]
The mechanism itself of the charge / exhaust device 1 of the present invention is the same as the conventional charge / exhaust device. That is, as shown in FIG. 2, by operating a motor M installed between the intake chamber C ₁ and the exhaust chamber C ₂ , air in the intake chamber C ₁ is sent (A _{2 to} A ₃ ) Air is taken into the intake chamber C ₁ (A ₁ ), and the air in the exhaust chamber C ₂ is exhausted (A ₄ ).
[0013]
The secondary pressure inlet 4 in the charge / exhaust device 1 of this example is such that a hole (25 mm in diameter in this example) provided in the intake chamber C ₁ separately from the intake port 2 is covered with a net-like cover.
The secondary pressure inlet in the charge / exhaust device of the present invention is not limited to the one shown in this example. For example, an arbitrary number of micropores are directly formed in an intake chamber in an arbitrary arrangement. As long as the above-described effects are exhibited, any of them may be used.
Although not shown, a cap for sealing the secondary pressure inlet can be provided, and the secondary pressure inlet can be operated only when necessary.
[0014]
When the air column T is charged using the charge / exhaust device 1 of the present invention, as shown in FIG. 3, the exhaust port 3 of the charge / exhaust device 1 and the charge port of the air column T are connected by a hose H, This is done by sending high-pressure air exhausted from the exhaust port 3 into the air column T.
In the case of charging, the supply of air to the intake chamber C ₁ is mainly performed from the intake port 2 and the secondary pressure intake port 4 hardly acts. That is, in the case of charging using the charging / discharging device 1 of the present invention, there is no difference from the case of using the conventional charging / discharging device.
[0015]
Further, when the air in the air column T is exhausted using the charge / exhaust device 1 of the present invention, as shown in FIG. 4, the intake port 2 of the charge / exhaust device 1, the exhaust port 3 of the air column T, and the hose. H is connected, and the air in the air column T is forcibly exhausted by the suction force from the air inlet 2.
In addition, about the charging port and exhaust port which are provided in the air column T, each may be provided separately, and the charging port and the exhaust port are made common. For example, the valve may be opened to allow forced exhaust.
[0016]
If the air in the air column T as shown in FIG. 4 exists sufficiently, be sucked from the intake port 2, hardly occurs a phenomenon that air passage will collapse, thus, to the intake chamber C ₁ Air is supplied mainly from the intake port 2, and the secondary pressure intake port 4 hardly acts.
However, when the air in the air column T decreases, the air column T is crushed by the pressure f and the sheets forming the air column T are brought into close contact with each other as shown in FIG. The phenomenon occurs. In such a state, the supply of air from the intake port 2 to the intake chamber C ₁ is almost lost, and a negative pressure is generated in the intake chamber C ₁ . When negative pressure is generated in the use chamber C _1, for taking in air from the secondary pressure outlet inlet 4, is subtracted the negative pressure in the intake chamber C _1, the suction force from the intake port 2 is reduced as a result . The close contact between the sheets forming the air column becomes stronger as the suction force from the intake port 2 becomes larger, and conversely becomes weaker as the suction force becomes smaller. By reducing the suction force from the air, the sheets forming the air column T are separated from each other as shown in FIG.
That is, the charge / exhaust device 1 of the present invention adjusts the suction force from the intake port 2 by forming the secondary pressure inlet 4 in the intake chamber C ₁ , and as a result, forms the air column T. Even if the comrades are in close contact with each other, it recovers naturally, and the exhaust work of the air column T can be completed in a short time, and the workability of the exhaust work is improved.
[0017]
In addition, in the charge / exhaust device in which the air in the intake chamber is sent into the exhaust chamber by the motor, the motor is cooled when the air is sent from the intake chamber to the exhaust chamber. In the charge / exhaust device 1 of the present invention, even when the supply of air from the intake port 2 to the intake chamber C ₁ is stopped, the supply of air from the secondary pressure inlet 4 to the intake chamber C ₁ is performed. Therefore, the cooling action of the motor M is always exhibited.
[0018]
As mentioned above, although one Example of the charging / exhausting apparatus of this invention was described based on drawing, the charging / exhausting apparatus of this invention is not limited to what was shown in FIG. It may be one provided with a plurality of ports, one with the intake chamber up and the exhaust chamber down, one with the intake chamber and the exhaust chamber arranged side by side.
[0019]
【The invention's effect】
As described above in detail, the charge / exhaust device according to the present invention shortens the work time for forced exhaust work and improves workability by forming the secondary pressure inlet in the intake chamber. It is something that can be done. That is, when the sheets forming the air column closely contact each other during the exhaust operation and the passage of air in the air column is blocked, the intake port is The air suction path is reduced to recover the air passage, and when the air passage is secured, the exhaust operation is performed without reducing the suction force from the intake port.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a charge / exhaust device of the present invention.
2 is a cross-sectional view schematically showing an internal mechanism of the charge / exhaust device shown in FIG. 1. FIG.
FIG. 3 is a diagram showing a state where charging is performed using the charging / discharging device shown in FIG. 1;
4 is a diagram showing a state in which exhaust is performed using the charge / exhaust device shown in FIG. 1. FIG.
FIG. 5 is a view showing a state in which sheets forming an air column are in close contact with each other when exhaust is performed using the charge / exhaust device shown in FIG. 1;
FIG. 6 is a diagram showing a state in which the air passage has been recovered by the action of the secondary pressure inlet.
FIG. 7 is a diagram showing a state in which sheets forming an air column are in close contact with each other when exhaust is performed using a conventional charge / exhaust device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Charge / exhaust apparatus 2 ... Intake port 3 ... Exhaust port 4 ... Secondary pressure intake 5 ... ON-OFF switch 6 ... Pilot lamp 7 ... Handle

Claims (2)

An air intake chamber with an air inlet connected to the air column of a filled air tent or air boat's air cylinder to draw in air and exhaust , and the air tent's air column or air boat's air cylinder of connecting to plenum port have a exhaust chamber where the exhaust port is provided for feeding air, in charge exhaust system for have a drive motor between the two chambers, the intake chamber, the intake chamber during the exhaust A charge / exhaust device that forms a secondary pressure inlet for taking in air from the outside when negative pressure occurs . The charge / exhaust device according to claim 1, wherein the secondary pressure inlet is covered with an assembly of minute holes.

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