JPH0774B2 - Pot with air pump - Google Patents

Description

TECHNICAL FIELD The present invention relates to a pot with an air pump, and more particularly to a method for releasing air pressure accumulated in the pot.

2. Description of the Related Art A conventional pot with an air pump is, as shown in FIG.
The pressure plate 13 is pushed down by hand to pressurize the air in the air pump chamber 14 into the pot 15, and the internal liquid is discharged by the pressure.

In such a conventional pot with an air pump, since the air pressure-fed into the pot 15 is released into the atmosphere in the return stroke after the pressure plate 13 is pushed down, it is necessary to perform the operation after each pressurizing operation. The pressure was not accumulated in the pot 15 and the pump efficiency was poor. Moreover, when the amount of liquid in the pot 15 decreases and the empty volume in the pot increases, the rate of increase in the pressure in the pot 15 with respect to the introduction of the same volume of air from the air pump chamber 14 decreases, and the pump efficiency is further improved. It tended to decline.

In order to solve the above drawbacks, the air pump chamber 14
If a backflow prevention valve for air is provided in the air passage between the pot 15 and the pot 15 so that the air pressure is maintained in the pot 15 even in the return stroke of the pressure plate 13, the pump efficiency is improved, but on the other hand, Since the air pressure is maintained in the pot when stopping the pouring of the liquid, there is a drawback that it cannot be stopped immediately.

In addition, when hot water is poured into the pot 15, the check valve may be closed due to the vapor pressure thereof, so that the pressure in the pot is increased and the hot water may be naturally poured out. there were.

Even though it is known that the pump efficiency can be improved by providing the check valve as described above, a good method could not be devised for the method of releasing the air pressure accumulated in the pot, which is the drawback caused by it, so the check valve In the present situation, I was not comfortable with the simplest pump structure without valves.

DISCLOSURE OF INVENTION Problems to be Solved by the Invention Therefore, it is a problem to be solved that the air pressure maintained in the pot by adding the air backflow prevention valve can be arbitrarily opened by an external operation. There is.

Means for Solving the Problems A configuration in which the opening of the internal pressure of the pot is opened and closed by manually displacing the set position of the pressure vessel 2 arranged outside the cover case 1 forming the outer surface of the pot upper part What you have done is the means to solve the problem.

As an example of a specific configuration, a connection portion is provided in a part of a ventilation path 4 that communicates from the pressure vessel 2 into the pot.
The connecting portion is opened and closed by displacing the set position of. Packing 10 forms the connection. Since the outer circumference of the connecting portion is open to the atmosphere, this portion also serves as an opening for the pot internal pressure.

An air pressure container 2 arranged outside the cover case 1,
Backflow prevention device 3 connected to the air outlet of the pressurized container 2
The air pump is configured by, and when the pressure container 2 is pressed with a fingertip and a force is applied lightly downward, the air pump is lowered while compressing the spring 5, and the air passage 4 communicating with the pot is opened. Connected. If the pressurized container 2 is crushed with the tip of a finger while maintaining this state, the valve 6 is closed and the valve 7 is opened due to an increase in internal air pressure, the compressed air is sent into the pot, and the internal liquid is poured out.

On the other hand, in the restoration process after the pressure vessel 2 is crushed, the air pressure in the pot is maintained because the valve 7 is closed by the air pressure in the pot, and the valve 6 in the pressure vessel 2 becomes a negative pressure.
Opens and outside air is introduced.

The above process is repeated to pour out a desired amount of liquid, but when stopping the pour-out, when the hand is released from the pressurized container 2, the restoring force of the spring 5 pushes the air pump back upward and the air passage 4 As the connection to is disconnected, the pressure in the pot is released to the atmosphere and the pouring stops.

Since the pressure chamber is provided by the diaphragm 8 and the elastic body 9 in FIG. 1, the compressed air stored during the pressurizing stroke is replenished in the pot even during the restoring stroke of the air pump. Is continuously dispensed for a certain period of time. If the following pressurizing operation is performed in the meantime, the liquid can be continuously poured out.

EXAMPLE As shown in FIG. 1, an air pressurizing container 2 arranged outside a cover case 1 forming an upper outer surface of a lid of a pot is made of a rubber hollow sphere, and an air container provided in a part thereof The delivery port is introduced into the cover case 1, and the air backflow prevention device 3 is fixed to the tip thereof. The air backflow prevention device 3 is a container having two rubber valves 6 and 7, and the pressurized container 2
When the internal pressure of the valve is positive with respect to the atmospheric pressure, the valve 6 is closed and the valve 7 is closed.
Works to open. In the case of negative pressure, the reverse operation is performed.

The pressure vessel 2 and the backflow prevention device 3, which are the above two components, constitute an air pump. This air pump is mounted on the cover case 1 so that it can be moved up and down, and is normally pushed upward by the force of the spring 5, so that it is separated from the ventilation path 4 leading to the inside of the pot. Since the connecting surface is formed by the separation surface and the periphery thereof is open to the atmosphere, the inside of the pot is normally open to the atmosphere at the connecting area through the ventilation passage 4.

When the air pump is pushed downward, the air pump and the air passage 4 are tightly connected by the packing 10, the air pump and the inside of the pot are connected, and the opening to the outside air at the connecting portion is blocked.

On the other hand, the air passage 4 is provided with a pressure chamber for air, and the pressure chamber is composed of a rubber diaphragm 8 and a sponge elastic body 9. When the internal pressure is applied, the elastic body 9 is compressed,
The diaphragm 8 is pushed upward, a space is formed therein, and air is stored therein.

The knob 11 prevents the liquid from being poured out due to an erroneous operation, and rotates the ring 12 to change the meshing with the backflow prevention device 3 to lock the vertical movement of the air pump.

The lid of the pot is formed with the above-described entire structure.

Next, as a volumetric embodiment, the pressure vessel 2 has an inner diameter 6 of a sphere.
cm, the volume is 113 ml, the amount of air delivered in one crush is about 70 ml. The pressurizing chamber has a volume of about 30 ml, and the elastic body 9 has a spring force of 30 to 50 g / cm ² per unit area of the diaphragm.

EFFECTS OF THE INVENTION Since the pressure vessel 2 is arranged outside the cover case 1, two functions (a pump function and a pot internal pressure release function) of the pressure vessel 2 can be selected depending on the operation method. Now, the pressure inside the pot can be released freely and instantly. As a result, it became possible to arbitrarily inject and stop the injection while the pressure vessel 2 was once gripped, and the operability was greatly improved.

Further, since the air pressure in the pot can be released by releasing the hand from the pressure vessel 2 as in the present embodiment, the pouring of the liquid can be stopped instantaneously. Moreover, since the inside of the pot is normally open to the atmosphere, there is no risk that the internal liquid will be spontaneously poured out by the vapor pressure.

On the other hand, since the check valve can be added, the pressure is maintained in the pot, and the pressure is accumulated in the pot every pressurization operation, and the pump efficiency can be improved.

Further, since the pressure in the pot is maintained by the check valve, it is worth adding a pressurizing chamber, and due to the effect of the pressurizing chamber, the liquid can be continuously and evenly discharged. It has become possible to reduce the liquid splash and the pouring sound.

Also, depending on the shape of the pressure vessel, the pressure vessel can be crushed between the thumb and other fingers so that it can be pinched, so that the action range of the force is almost within the system in the palm, and As the pushing force of the fingertip is no longer supported by the floor through the whole body, the operating force can be reduced.

Further, by connecting the air pump in the direction of pushing down the pressure vessel 2 and pressing the air in the direction of crushing the pressure vessel in the lateral direction, it is possible to prevent confusion between the two operations.

[Brief description of drawings]

FIG. 1 is a sectional view of a lid of a pot with an air pump according to the present invention, and FIG. 2 is a partial sectional view showing the structure of a conventional pot. 1 ... Cover case, 2 ... Pressurized container, 3 ... Backflow prevention device, 4 ... Ventilation path, 5 ... Spring, 6 and 7 ...
Valve, 8 ... diaphragm, 9 ... elastic body, 10 ... packing, 11 ... knob, 12 ... ring.

Claims (1)

[Claims] 1. A pot with an air pump configured such that air pressure applied to the pot by manually compressing the pressurized container is held in the pot by a check valve. Is disposed outside a cover case forming an outer surface of the pot upper portion, and the opening of the pot internal pressure is opened and closed by manually displacing the setting position of the pressure vessel. A pot with an air pump.