JPH0641618U - Water purification pot - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a water purification pot capable of exerting a water purification function without increasing the number of parts such as a switching device and a water purification pump. [Constitution] The outlet 13 of the water purification filter 6 is connected to the inlet 12
By providing the heater at a position closer to the heater 11, a difference in water temperature between the vicinity of the discharge port 13 and the vicinity of the suction port 12 is caused, and water moves in the water purification filter 6 by convection.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to an electric pot with a built-in water filter.

[0002]

[Prior art]

 A conventional electric pot with a built-in water filter is provided with a switching valve 4 at the upper end of a pumping passage 3 which is connected to an inner container 1 via a pump 2 as shown in FIG. The discharge port 5 was connected to one side, the water purification filter 6 was connected to the other side, and the outlet side of the water purification filter 6 was opened above the inner container 1.

In the structure shown in FIG. 5, a pumping passage 3 is connected to the inner container 1 via a pumping pump 2, and a discharge port 5 is connected to an upper end of the pumping passage 3 via a safety valve 7. Similarly, the inner container 1 is connected to a purified water passage 9 via a purified water pump 8, and the outlet of the purified water filter 6 connected to the upper end of the inner container 1 is opened above the inner container 1.

In FIGS. 4 and 5, reference numeral 11 is a heater.

[0005]

[Problems to be solved by the device]

 The above-mentioned one shown in FIG. 4 has a problem that the switching device including the switching valve 4 and its operating device is required, resulting in high cost. In addition, the pump shown in FIG. 5 requires two pumps, the pumping pump 2 and the water purifying pump 8, which also causes a problem of high cost.

Therefore, an object of this invention is to provide a water purification pot having a water purification function that can be manufactured at low cost without increasing the number of parts.

[0007]

[Means for Solving the Problems]

 A first means for solving the above problems is a water purification pot having an inner container provided with a heating means, and a water purification filter provided with an inlet and an outlet for the liquid in the inner container. The structure is such that the outlet of the water purification filter is located closer to the heating means than the inlet.

Further, the second means is a water purification pot having an inner container also provided with a heating means, and a water purification filter having an inlet and an outlet for liquid in the inner container. The second heating means for generating a temperature difference between the liquid at the suction port and the liquid at the discharge port is provided.

[0009]

[Action]

 In the water purification pots according to the first and second means, convection occurs inside the water purification filter due to the temperature difference between the water near the inlet of the water filter and the water near the outlet of the water filter, and Is purified while passing through.

[0010]

【Example】

 In the first embodiment shown in FIG. 1, the pumping passage 3 is connected to the bottom surface of the inner container 1 via the pumping pump 2 and the safety valve 7 is provided at the upper end of the pumping passage 3 as in the case of a normal electric pot. Then, the discharge port 5 is connected. A heater 11 is attached to the bottom surface of the inner container 1.

A water purifying filter 6 is provided on the lower surface of the inner container 1, and an inlet 12 of the water purifying filter 6 communicates with a lower portion of a side wall of the inner container 1. Further, the discharge outlet 13 of the filter 6 communicates with a hole provided in the central portion of the heater 11. The suction port 12 is located away from the heater 11, and the discharge port 13 is located at the center of the heater 11.

Since the water purification pot of the first embodiment is as described above, when the heater 11 is energized to heat it, the water in the inner container 1 is gradually heated. As described above, since the outlet 13 of the purified water filter 6 is closer to the heater 11 than the inlet 12, the water temperature near the outlet 13 is higher than the water temperature near the inlet 12. Therefore, convection that moves from the suction port 12 side to the discharge port 13 side occurs in the water purification filter 6, and during the movement, water contacts the cleaning agent 14 and is purified.

Depending on the type of the water purification filter 6, when the water temperature exceeds a certain level, the substance adsorbed on the water purification agent 14 may be released. To prevent this, as shown in FIG. An opening / closing valve 18 using a shape memory alloy spring 17 may be provided at the inlet 12, and an opening / closing valve 19 using a bimetal valve may be provided at the outlet 13. The shape memory alloy spring 17 is in an expanded state of the martensite phase at a low temperature and the opening / closing valve 18 opens the suction port 12, but at a high temperature, as shown in FIG. And contracts, so that the on-off valve 18 closes the suction port 12. On the other hand, the open / close valve 19 using bimetal bends downward as shown in FIG. 2 (a) to open the discharge port 13 in a low temperature state, but when it becomes a high temperature state, it is shown in FIG. 2 (b). And the outlet 13 is closed.

When the operating temperature of each of the on-off valves 18 and 19 is set to be constant, the water purification filter 6 is closed at a predetermined temperature and the water purification function is automatically stopped.

Next, in the second embodiment shown in FIG. 3, the installation position of the water purification filter 6 is different from that described above. That is, the water purification filter 6 in this case is provided on the outer surface of the lower side wall of the inner container 1, the suction port 12 is provided at the lower part, and the discharge port 13 is provided at the upper part, which communicate with the inner container 1, respectively. An auxiliary heater 15 for water purification is attached to the lower surface of the water purification filter 6.

The auxiliary heater 15 is energized separately from the heater 11 for heating. When the auxiliary heater 15 is energized, the water temperature near the suction port 12 and the bottom surface of the water purification filter 6 becomes higher than the water temperature near the discharge port 13. Therefore, the water near the suction port 12 moves inside the water purification filter 6 by convection, is discharged from the discharge port 13, and is purified during the movement.

A valve as shown in FIG. 2A may be provided at the suction port 12 and the discharge port 13.

[0018]

[Effect of device]

 As described above, this device is designed to move water by convection in the water filter by creating a temperature difference between the water temperature near the inlet and the water outlet of the water filter. It does not require a special switching device or a water purification pump, and can reduce product costs.

[Brief description of drawings]

FIG. 1 is a sectional view showing the outline of a first embodiment.

FIG. 2A is a schematic cross-sectional view of a part of the above modification, and FIG. 2B is a schematic cross-sectional view of the valve open state of FIG. 2A.

FIG. 3 is a sectional view showing the outline of a second embodiment.

FIG. 4 is a sectional view showing an outline of a conventional example.

FIG. 5 is a sectional view schematically showing another conventional example.

[Explanation of symbols]

 1 Inner container 2 Pumping pump 3 Pumping passage 4 Switching valve 5 Discharge port 6 Water purifying filter 7 Safety valve 8 Water purifying pump 9 Water purifying passage 11 Heater 12 Inlet 13 Outlet 14 Water purifying agent 15 Water purifying heater 17 Spring 18 Opening valve 19 Opening valve

Claims (2)

[Scope of utility model registration request] 1. A water purification pot having an inner container provided with heating means and a water purification filter having an inlet and an outlet for liquid in the inner container, wherein the outlet of the water filter is heated more than the inlet. A water purification pot characterized by being installed at a position close to the means. 2. A water purification pot having an inner container provided with a heating means and a water purification filter having an inlet and an outlet for the liquid in the inner container, wherein the liquid at the inlet and the outlet of the water filter are A water purification pot having an auxiliary heating means for generating a temperature difference.