JPH0741008B2 - Air-pumped pot with pressure chamber - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a pot with an air pump, which improves and averages the pulsation rate of liquid injection.

2. Description of the Related Art As shown in FIG. 2, a conventional pot with an air pump is
By pressing the pressure plate 14 downward, the air in the air pump chamber 15 is pressurized and supplied into the pot 16, and the internal liquid is poured out by the pressure.

The pot with the air pump having the above-described configuration is operated by pressurizing the air that has been pressurized and supplied into the pot 16 because it is released into the atmosphere in the return stroke after the pressure plate 14 is pushed down. The liquid pouring stopped every time.

In order to improve the drawback, a backflow prevention valve for air is provided in the air passage communicating from the air pump chamber 15 into the pot 16, and the air pressure is maintained in the pot 16 even in the return stroke after the pressurizing operation. Although there is an idea to do so, even if the pump efficiency is improved, it is still insufficient depending on the conditions in that the liquid is continuously poured.

Since the container that holds the air pressure (pot 16) is made of a rigid body, air is accumulated by elastic compression of the air itself, so if the empty capacity in the pot 16 is small, the amount of air accumulated will be insufficient, This is because the pressure of air cannot be continued during the restoration process of the pressure plate 14.

Therefore, when the amount of liquid in the pot 16 is close to the full amount, the pouring of the liquid is stopped at each pressurizing operation, and as the amount of liquid in the pot 16 decreases, it is a pulsating flow, but it continues gradually. It was the current situation that it was possible to dispense.

Numerically, when the empty volume in the pot 16 is about 800 ml or more, it is possible to continuously pour out although it is a pulsating flow,
This corresponds to 40% when the inner volume of the pot 16 is set to 2, and it means that the continuous pouring property cannot be improved unless the residual liquid amount in the pot 16 is reduced to about 60%.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention Therefore, the present invention has as its main problems to be solved the problem of enabling the liquid in the pot to be continuously poured out and reducing the pulsating flow.

Means for Solving Problems The basic structure is to “provide a pressurizing chamber” in the pot, and the volume of the pressurizing chamber is adjusted to its internal pressure in order to improve the performance of the pressure fluctuation reducing function of the pressurizing chamber. It is characterized in that it is configured to increase or decrease according to the number.

Specifically, as shown in FIG. 1, a backflow prevention device 2 is provided in the ventilation path so that the air supplied from the pressure vessel 1 into the pot does not flow back to the pressure vessel 1 side. Is constructed so that the air pressure is maintained in the pot by the valve 8 in the inside and communicates with the space where the air pressure is maintained (the space from the valve 8 to the ventilation passage 4 and the empty volume in the pot). Then, the pressurizing chamber 3 is connected, the pressurizing chamber 3 is formed to have a variable volume, and a force (by the elastic body 7) is applied to the pressurizing chamber 3 in the direction of volume reduction. 3 is set so as to increase as the volume increases, and the force and the air pressure applied to the pressurizing chamber 3 are balanced so that the volume of the pressurizing chamber is increased or decreased in accordance with the fluctuation of the air pressure in the pressurizing chamber. The configuration is used as a means for solving the problem.

The operation will be described with reference to the liquid pouring operation in FIG. 1. An air pump is constituted by the pressurizing container 1 and the backflow prevention device 2 provided at the air outlet of the pressurizing container 1, and the pressurizing container 1 is lightly moved downward by hand. When pressed, the spring 10 is compressed to lower the air pump, and the air pump is connected to the ventilation path 4 communicating with the pot. When the pressurized container 1 is crushed with the tip of a finger while keeping that state, the valve 9 is closed and the valve 8 is opened due to the increase of the internal air pressure, so that the compressed air is sent into the pot through the ventilation passage 4 and the inside Pour out liquid.

On the other hand, in the restoring process after the pressure vessel 1 is crushed, the valve 8 is closed by the air pressure sent into the pot, so that the pressure in the pot is maintained and the pressure vessel 1 becomes a negative pressure.
The valve 9 is opened inside and outside air is introduced.

The above process is repeated to pour out a desired amount of liquid. When stopping the pour-out, when the hand is released from the pressurized container 1, the restoring force of the spring 10 pushes the air pump back upwards and the air passage. As the connection to 4 is disconnected, the compressed air in the pot can be released into the atmosphere and stop pouring.

Next, the operation of the pressurizing chamber 3 will be described in the above operation. When the pressurizing operation of the pressurizing container 1 is performed, a part of the compressed air sent into the pot is pressurized during the sending process. It also flows into the chamber 3 and increases the volume of the pressurizing chamber 3 in proportion to the increase in the pressure thereof. The volume is increased by pushing the diaphragm 6 upward by the pressure of air and forming a larger space between the diaphragm 6 and the substrate 5. At this time, the pressure of which the volume is increased is stored as the deformation stress of the elastic body 7, and the stress is mainly released during the restoring process after the pressurizing operation. During the restoration process, since the inflow of air from the pressurized container 1 into the pot is stopped, during this period the liquid injection is continued only by the holding pressure in the pot, but The pot internal pressure, which decreases in inverse proportion, is supplemented with air by the volume reduction of the pressurizing chamber 3 to maintain the pressure and prolong the liquid injection time. Since the restoration stroke time after the pressurizing operation is about 2 seconds at the longest, if the replenishment of the air from the pressurizing chamber 3 is continued to that extent, the air is sent from the pressurizing container 1 into the pot. The liquid can be continuously discharged even if it is intermittent.

Example As shown in FIG. 1, an air pressurizing container 1 arranged outside a cover case 13 forming an upper outer surface of a lid of a pot is formed of a rubber hollow sphere, and air provided in a part thereof. The air outlet is introduced into the cover case 13, and the air backflow prevention device 2 is fixed to the tip thereof. The backflow prevention device 2 is a container having two rubber valves 8 and 9, and operates so that the valve 9 is closed and the valve 8 is opened when the internal pressure of the pressurizing container 1 is a positive pressure relative to the atmospheric pressure. If negative pressure is applied, the reverse operation is performed.

An air pump is configured by the pressure vessel 1 and the backflow prevention device 2 which are the above two components. The air pump is attached to the cover case 13 so as to be able to move up and down, and is normally placed upward by the force of the spring 10 and separated from the ventilation path 4 leading to the inside of the pot. Since the separation port is open to the atmosphere, the inside of the pot is open to the atmosphere through the ventilation passage 4.

When the air pump is pushed downward, the air pump and the air passage 4 are hermetically connected by the packing 12, the air pump and the inside of the pot are connected, and the opening to the outside air at the separation port is blocked.

A pressurizing chamber 3 formed by a gap between a diaphragm 6 and a substrate 5 is connected to an air passage 4 on the pot side of the backflow prevention device 2. The pressurizing chamber 3 is arranged in a circular shape around the ventilation passage 4 so as to have a large plane area and a thin overall thickness. The diaphragm 6 is pressed against the substrate 5 side from behind by an elastic body 7 such as a sponge or a leaf spring. The contact surface between the diaphragm 6 and the substrate 5 is provided with irregularities for the purpose of preventing adhesion. On the other hand, an air exhaust port 11 is provided behind the diaphragm 6 to prevent the back pressure from rising due to the diaphragm 6 operating. The diaphragm 6 is made of a rubber material such as silicon rubber or a plastic thin plate.

Next, a volumetric embodiment will be described. The pressure vessel 1 has an inner diameter 6c of a sphere.
m, 113 ml in volume, the amount of air delivered in one crush is about 70 ml.

The pressurizing chamber 3 has a volume of about 30 ml, and the elastic body 7 has a spring force of 30 to 50 g / cm ² per unit area of the diaphragm.

EFFECTS OF THE INVENTION According to the present invention, the pressure fluctuation mitigating function of the pressure chamber can be improved by increasing or decreasing the volume of the pressure chamber according to the internal pressure of the pressure chamber. Could be reduced.

As a result, continuous injection and pulsation were improved by adding a pressure chamber with a volume of 30-50 ml to the pot.

In addition, the size of the entire pot can be made smaller than the conventional one (the volume ratio of the pressure chamber is 30 to 50 ml / 800).
It became possible to inject continuously with a small pulsating flow even when the pot was full. For example, when the pressure vessel is operated at a cycle of 2 to 3 seconds to feed air into the pot, the pressure chamber and the check valve prevent the air pressure from fluctuating in the pot to be averaged. The liquid was injected, the amount of liquid was small, and the injection noise became quiet.

The following effects were also obtained by improving the pressure fluctuation relaxation function of the pressurizing chamber.

It is possible to operate continuously because it is possible to continuously inject it without having to repeat the pressure operation.

(2) The relationship between the crushing method of the pressurized container and the injecting state is relaxed, and the injecting solution becomes gentle without the liquid rushing out vigorously.

C. Even if the pressurized container is crushed instantly, the reaction force does not rise sharply and the operation feeling is greatly improved. If there is no pressurizing chamber, if the empty volume in the pot is small, the internal pressure rise rate will be large, so the reaction force will be large and not only the pressurizing force will be required, but also the pressurized container will be pushed out instantly. It becomes a state that there is no, and the sensitivity is impaired against the intention of operation.

D, energy required for injection can be reduced. The energy consumed by the person for the liquid injection operation is determined by the impulse of the applied pressure and the duration of pressurization. If there is a pressurizing chamber, the pressurization can be instantaneously completed, so that the pressurizing time can be shortened and the energy consumption can be reduced. If there is no pressurizing chamber, the reaction force rises and the pressurization cannot be completed instantaneously. Therefore, the pressurization must be continued during the injection.

As described above, according to the present invention, not only the physical aspect that the liquid can be continuously discharged but also the operational feeling is greatly improved.

[Brief description of drawings]

FIG. 1 is a sectional view of a lid showing the structure of the pot of the present invention, and FIG. 2 is a partial sectional view showing the structure of a conventional pot. 1 ... Pressurized container, 2 ... Backflow prevention device, 3 ... Pressurization chamber,
4 ... Ventilation path, 5 ... Substrate, 6 ... Diaphragm, 7 ...
… Elastic body, 8 and 9 …… Valve, 10 …… Spring, 11 ……
Exhaust port, 12 …… packing, 13 …… cover case.

Claims (1)

[Claims] 1. A supply of air from an air pump is intermittent, and a backflow stop valve is provided so that the air supplied from the air pump into the pocket does not flow back to the air pump side. In a pot with an air pump configured to hold air pressure in the pot, a pressurizing chamber is connected to a space formed on the pot side of the check valve to hold the air pressure, and is connected to the pot. The pressurizing chamber is formed to have a variable volume, a force is applied to the pressurizing chamber in a direction of volume reduction, and the force is set so as to increase as the volume of the pressurizing chamber increases. A pot with an air pump having a pressurizing chamber, characterized in that the volume of the pressurizing chamber is increased / decreased according to the fluctuation of the air pressure in the pressurizing chamber by balancing the air pressure.