GB2061392A - Air pump pressurised container for dispensing liquids - Google Patents

Abstract

An air pump pressurised liquid dispensing container is disclosed which comprises a volume indicator consisting of a float 11 and a spiral band 13, a temperature indicator 55 and a closure 7 for the discharge pipe 3. Up and down movement of the float, causes the spiral band 13 to turn and operate an indicator 53 moving within a scale 54 which indicates the water volume in the pot. The closure 7 is a bulb of appropriate weight at the upper terminal of the water conduit pipe 3 so that water in the pot is insulated from the external environment when the bulb closes the conduit pipe. <IMAGE>

Description

SPECIFICATION Air pot This invention relates to a thermal insulating device, volume and temperature indicators for air pot.

Ordinarily known air pot discharge water simply by pressing. However, its pressure conduit, water conduit and water outlet are through and in daily application, water is not insulated from the environment so that water temperature cannot be maintained for long time. Once we pour in hot water, the water becomes warm after a certain period because of cooling. Furthermore, when we get water from an air pot, we are not able to find temperature and volume of water therein till pressure is applied and water is got. So, one may find water is insufficient or temperature is not high enough for preparing a cup of hot coffee, or milk.

There is a plurality of inconveniences in application, which are the defects of ordinary air pot.

According to the present invention there is provided a new design of air pot, especially the one with volume and temperature indicators as well as thermal insulating device and it comprises volume indicator, temperature indicator and bulb.

The invention is preferably an improvement of ordinary thermal bottle so that a thermal bottle will indicate water volume and temperature at its external and there is a bulb which is placed at a terminal of water conduit pipe to insulate water from environment for the purpose of temperature retaining.

Preferably, an air pot manufactured in accordance with the present invention is to overcome defects as above mentioned and to provide water volume and temperature indicators.

Water volume is indicated by means of a float in the pot and a spiral band which is turned by the float. Water temperature is indicated through a thermometer.

Preferably the invention is to provide a bulb which is freely placed on a terminal of water conduit pipe and through setting of weight of said bulb, it will float up when pressure is applied so that water can be discharged through the pipe and as soon as pressure is released, it drops on the pipe terminal as a seal so that water in the pot is insulated from the environment and therefore, insulation effect is good.

An embodiment of the present invention will now be described by way of example with reference to the accompanying drawings, in which Fig. 1 is a perspective view of an air pot according to the present invention; Fig. 2 is an exploded perspective view of the air pot of Fig. 1; Fig. 3 is the sectional views of the water volume indicator of the air pot of Fig. 1, and Fig. 4 is a part sectional view of a device of the thermal insulating bulb of the air pot of Fig. 1.

Referring now to Fig. 1 there is shown an air pot having a water volume indicator 1 and a temperature indicator 2 are designed on pot cap 5 of the pot body 6. They show water reserved and temperature of water in the pot so that one can know them prior to discharge of water.

As will be more clearly seen from Fig. 2, the said volume indicator consists of a hollow float 11 made of light material. Such a float 11 is connected to a sliding plate 12 which has a hole 121 to be inserted by a water conduit pipe 3 in air pot and it can move up and down along the conduit pipe 3 as indicated by arrow C. At the plate 12 there is also a rectangular slot 122 with adequate width. Within the slot 122 there is a spiral band 1 3 and the whole spiral band has only a turn along its whole length. Its bottom end 131 is fixed to a movable stand 14 on the bottom end of conduit pipe 3 and its upper end 1 32 of the spiral band 13 is at the round hole 41 of pot cap body 4 and it can rotate freely in the said round hole 41. The round hole 41 is matching with a conical body 52 at bottom 51 of pot cap 5.The pot cap 5, as shown in the attached drawing, comprises a pressing body 5 and an air chamber 5". The pot cap 5 is connected with the pot body by means of a hinge. In order to allow the conical body 52 which is matching with the round hole 41 can be connected with the spiral band 13 whenever the pot is recovered, the conical body 52 has two conical pieces 521 and 522 with an oblique space 524 and its tips 523 matching with the whole body is rotatable on the bottom of 51 of pot cap 5. When the pot is covered with pot cap 5, the spiral band 13 can be held in the oblique space 524 so that the spiral band 13 can rotate following the up and down movement of float 11 and thus, conical body 52 is rotated as shown in figure 3.

The conical body 52 is linked with an indicator 53 on the pot cap. Therefore, the engraving line 54 of the volume indicator 1 can show water volume remained in the pot and then, one can known the exact quantity of water in the pot by just watching its external.

The temperature indicator 2 is comprising a heat conductor 24 and a thermal sensor 25 as shown in the attached drawing of figure 2 which are in sealed state without contacting environment so that temperature of water can be shown on the pot. The heat conductor is made in a conduit form of good thermal insulative material and the bottom terminal of the conduit 21 has a conical lower opening 22. The said lower opening 22 is fixed to the bottom 51 and it matches with an air hole 42 at the interior body 4 of pot cap 5 so that the air hole 42 is sealed with the conical lower opening 22 and leakage is prevented.

Stream is traveling through lower opening 22, conduit and then upper opening 23. The upper opening 23 is in conical form too. Thermal sensing glass tube 25 of a thermometer (heat conductor 24) is inserted into it so that it is heated by the steam. Then, the thermometer 24 indicates temperature 2 of water in the pot. Scale of the thermometer can be a circular form in a groove 55 on the pot cap 5 so that the thermometer 24 can be protected and used as an indicator 2 for water temperature.

For thermal insulation purpose, the invention comprises a bulb 7 within the interior body 4 of pot cap 5. Ordinary air pot does not have good thermal insulation effect since when it is pressed for discharging water, the conduit pipe 31 is through interior space 43 and water in the pot disperses heat energy to the environment, which is dispersed even the pot is not being pressed.

Fig. 4 is a part sectional view of a device of the thermal insulating bulb of the air pot of Fig. 1.

The invention has a bulb 7 which is made of thermal resistant and poisonless material on the upper terminal of water conduit pipe 3. The bulb 7 has an appropriate weight and its diameter is slightly bigger than the inner diameter of conduit pipe 3 so that when pressure is applied the pressure can float the bulb 7 and water discharging is possible. When no pressure is applied (i.e. at normal condition), the bulb 7 falls on the opening of conduit pipe 3 by its own weight, as shown in figure 4. Since it is a spherical structure, thermal energy is insulated there and then, purpose of thermal insulation is attained.

Therefore, there has been described an air pot having new structure of which the water volume and temperature indicators as well as the thermal insulation device are designed for air pot so that application of the air pot is simple and practical.

Claims (13)

1. An air pot comprising a water volume indicator, a water temperature indicator and a thermal insulation device.

2. An air pot as claimed in claim 1, wherein there is a float and then by means of floating of the said float and up and down movement of a slot on it therein.

3. An air pot as claimed in claim 2, wherein a spiral band is turning and an indicating level in connection with the spiral band on the pot is moving within a scale which shows water volume in the pot.

4. An air pot as claimed in claims 1, 2 and 3, therefore, an air pot can have its water volume reserved in it shown at its external.

5. An air pot as claimed in claims 1 to 4, wherein there is a long thin spiral band with only a turn along its whole length and it is inserted into a slot of the float, its bottom end is connected to a stand on the end of water conduit pipe and it can rotate freely so that the spiral band is turning upon up and down movement of float and slot and so, the slot is revolving accordingly.

6. An air pot as claimed in claims 3 to 5, wherein a long spiral band is linked with an indicating level on pot cap and connected to a conical body under the cap when the pot is closed with said cap.

7. An air pot as claimed in claim 6, wherein the conical body comprises two conical pieces with an oblique space for holding of spiral band so that the indicating level is driven by the spiral band.

8. An air pot as claimed in claim 1, wherein a temperature indicator comprises a thermometer and a thermal conductor.

9. An air pot as claimed in claim 8, wherein the thermometer is placed in a groove on the cap and the sensing glass tube is connected to a thermal conductor, under which is a conical pipe opening which is fixed to the bottom of the cap which is always matching with an air hole on cap body when the pot is closed.

1 0. An air pot as claimed in claim 9, wherein the conical pipe opening is sealing the air hole and prevent it from leakage and then, the sensing glass tube senses temperature which is indicated by the thermometer.

11. An air pot as claimed in claim 1, wherein a thermal insulation device comprises a bulb in a space on water conduit pipe within the cap body.

12. An air pot as claimed in claim 1 wherein the bulb is made of poisonless thermal resistant material; it has an appropriate weight and its diameter is slightly larger than the inner diameter of conduit pipe so that when pressure is applied, it is forced upward by water and when no pressure is applied, it falls on the opening of conduit pipe by means of its own weight so that heat energy will not be dispersed to the environment.

13. An air pot substantially as hereinbefore described with reference to, and as illustrated in, the accompanying drawings.