JPH094951A - Water tank - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an electric refrigerator capable of effectively using the water stored in a water supply tank. [Structure] A tank body having a water supply port opened at the bottom, an outer cap detachably attached to the water supply port and having a first drainage port opened at the bottom, and an outer cap detachably attached to the outer cap. Air vent pipe, water filter, second
An inner cap having a drainage port, a measuring chamber formed by the outer cap and the inner cap, and a valve rod having a lower end protruding from the first drainage port, No. 2 valve body provided with an upper valve for opening / closing the drainage port and a lower valve for opening / closing the first drainage port, and elasticity for urging the lower valve to always close the first drainage port. The elastic body is interposed between the outer cap and the valve rod.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply tank containing a water purification filter.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 3 and 4, a refrigerator main body is provided with a water discharge port 3a and a partition wall 3 made of a heat insulating material.
Is divided into an upper refrigerating compartment 1 and a lower freezing compartment 2 equipped with an ice making device. The refrigerating compartment 1 is provided with a receiving portion 4 at the bottom, on which a water tank 5 is installed, and below it. A lever 16 for supplying water from the water supply tank 5 to the ice tray 17 and an electromagnet 15 for driving the lever 16 at a predetermined timing are provided. An ice tray 17 is provided in the freezer compartment 2. The ice tray 17 is appropriately turned by a drive device 18 so that one end of the ice tray 17 hits a rotation-preventing pin (not shown) during the turn. A twist is added to 17 so that the ice block separates from the ice tray 17 and is accommodated in an ice storage box 19 below.

The water supply tank 5 is provided with a tank body 6 at the upper part thereof, and an outer cap 7 is detachably attached to a first drainage port 7a at the lower part of the tank body 6, and the outer cap 7 has an upper surface. An air vent pipe 9a is erected on one side, a second drain port 7c is opened in the center, and a filter attachment 8a having a cylindrical filter 9d on the side surface is detachably attached to the upper part. The inner cap 8 is attached. A measuring chamber 9 is formed by the outer cap 7 and the inner cap 8, and the upper valve 1 is provided in the measuring chamber 9.
A valve body 12 provided with a valve rod 11 provided with 2a and a lower valve 12b is attached. Further, a spring 10 for urging the lower valve 12b to always close the first drainage port 7a is attached so that the valve body 12 can be raised and lowered.

According to the above construction, the tip 16a of the lever 16 is always lowered except when water is supplied to the ice tray 17, whereby the spring 10 is extended and the valve body 11 is lowered. Therefore, the first drain port 7a is closed by the lower valve 12b, and at the same time, the upper valve 12a is closed by the second drain port 7c.
The second drain port 7c is opened, the impurities and residual chlorine contained in the water in the tank body 6 are removed by the filter 9d, and flow into the measuring chamber 9. On the other hand, ice tray 1
When water is supplied to 7, the tip 16a of the lever 16 rises at a predetermined timing, whereby the spring 10 contracts and the valve body 11 rises. Therefore, the second drain port 7c is pressed and closed by the upper valve 12a, and at the same time, the lower valve 1c is closed.
Since 2b separates from the 1st drainage port 7a, the 1st drainage port 7a is opened and the water of the measurement chamber 9 is supplied to an ice tray.

However, the water supply tank 5 as described above
According to this structure, the water level of the tank body 6 decreases each time the water is drained, and when the water level becomes lower than the lower portion (reference A) of the filter 9d, the water of the tank body 6 cannot flow into the purified water outlet 9, There is a problem in that the water remaining in the tank body 6 (corresponding to about one ice tray) cannot be used for ice making.

[0006]

In view of the above problems, the present invention provides a water supply tank capable of reducing the amount of water remaining in the tank body.

[0007]

In order to solve the above-mentioned problems, the present invention provides a tank main body having a water supply opening at the bottom,
An outer cap that is detachably attached to the water supply port and has a first drainage port at the bottom, an air vent pipe that is detachably attached to the outer cap and an upper part, a water purification filter, and a second drainage port are provided. An inner cap provided, a measuring chamber formed by the outer cap and the inner cap, and a valve rod having a lower end protruding from the first drain port, the second drain port being provided in the measuring chamber. A valve body provided with an upper valve that opens and closes and a lower valve that opens and closes the first drainage port, and a biasing unit that biases the lower valve in a direction to normally close the first drainage port. It is characterized by being. Further, the urging means comprises an elastic body interposed between the outer cap and the valve rod. Further, the elastic body is a spring. Furthermore, the water purification filter is arranged at a position lower than the bottom of the tank body. Also, as the valve rod moves up and down,
It is characterized in that the upper valve and the lower valve alternately open and close the first drain hole and the second drain hole.

[0008]

As described above, according to the water supply tank of the present invention, since the water purification filter is provided at a position lower than the bottom of the tank body, the amount of water remaining in the tank body is smaller than that of the conventional example. Less.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the embodiments shown in FIGS. The same reference numerals as those in the conventional example are used in the figure.

In FIG. 1, 5 is a water supply tank, and a tank body 6 for storing water is provided above the water supply tank 5.
An outer cap 7 having an umbrella-shaped convex portion 7b having a first drainage port 7a formed at the center is detachably attached to the water supply port 6a at the bottom of the tank body 6, and the outer cap 7 is attached to the outer cap 7. When the water is drained from the first drain port 7a to one side of the upper part, the measuring chamber 9
The air inside is exhausted to the tank body 6 side, by which an air vent pipe 9a for smoothly flowing purified water is erected, a second drain port 7c is opened in the center, and a position lower than the bottom surface of the tank body 6 is provided. From the tank body 6 to the weighing chamber 9
An inner cap 8 having a disk-shaped water purifying filter 9b made of activated carbon for purifying stored water flowing in is detachably attached, and a measuring chamber 9 is formed by the outer cap 7 and the inner cap 8. . An upper part of the measuring chamber 9 is fitted in the measuring chamber 9, a lower part thereof projects downward from the first drainage port 7a, and a flange 11a is formed at a lower end thereof.
An upper valve 12a is attached to the lower surface so as to face the second drainage port 7c, and a lower valve 12b is attached to the upper surface so as to face the first drainage port 7a.
Along with this, a valve body 12 that can be raised and lowered is provided. Valve stem 11
Between the flange 11a and the umbrella-shaped convex portion 7b, the lower valve 12b urges the first drainage port 7a in a direction to always close the first drainage port 7a so that water does not normally flow out from the measuring chamber 9. In addition, a spring 10 is attached to prevent water from flowing out of the water supply tank 5 even when the water supply tank 5 containing water is turned upside down.

The operation of the above configuration will be described below. When the sensor (not shown) provided at the bottom of the ice tray detects that the temperature of the ice tray has dropped, the water supply operation from the tank main body 6 to the measuring chamber 9 is sufficient to make ice in the ice tray. The tip 16a of the lever 16 is lowered and the spring 10 is extended, whereby the valve rod 11 is lowered and the lower valve 12b is used to move the first drain port 7a.
When a is closed, the upper valve 12a is also lowered, the second drain 7c is closed by the same valve 12a, and the water in the tank body 6 is supplied to the measuring chamber 9 through the filter 9b in a predetermined amount. To be done.

The water supply operation from the water supply tank 5 to the ice tray is
When the sensor (not shown) provided at the bottom of the ice tray detects that the temperature of the ice tray has risen, the tip 16a of the lever 16 rises as if the ice tray has a small amount of ice,
As a result, the valve rod 11 rises, the second drain port 7c is closed by the upper valve 12a, and the lower valve 12b rises, and the blockage of the first drain port 7a by the lower valve 12b is released, and the measuring chamber is released. The water of 9 is supplied to the ice tray through the first drain port 7a.

As described above, from the tank body 6 to the measuring chamber 9
The amount of water stored in the tank main body 6 gradually decreases as the water supply to the tank and the drainage from the measuring chamber 9 to the ice tray are repeated, but the position of the filter 9b is lower than that of the bottom of the water supply tank 6. Because of the low position, the water stored in the tank body 6 continues to be supplied from the tank body 6 to the measuring chamber 9 until the water reaches the bottom of the tank body 6.
The amount of water remaining at the bottom of the tank is smaller than that of the conventional water tank.

[0014]

As described above, according to the present invention, since the water purifying filter is positioned so as to be lower than the bottom surface of the tank body, the amount of water remaining in the tank body can be adjusted by the conventional water supply method. It is possible to make it smaller than in the case of a tank, and it is possible to effectively use the water in the tank body, so that the shape of the tank body can be downsized and the space inside the refrigerator can be effectively used. Will be available to you.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of a main part of a measuring chamber of a water supply tank according to the present invention before water supply.

FIG. 2 is an enlarged cross-sectional view of a main part of the water supply tank according to the present invention when water is supplied to the measuring chamber.

FIG. 3 is a cross-sectional view of a main part of a conventional water supply tank and its peripheral portion.

FIG. 4 is an enlarged cross-sectional view of a main part of a conventional measuring chamber of a water supply tank.

[Explanation of symbols]

 5 Water Supply Tank 6 Tank Body 7 Outer Cap 7a First Drainage Port 7b Convex Part 7c Second Drainage Port 8 Inner Cap 9 Measuring Room 9a Air Vent 9b Water Purification Filter 10 Spring 11 Valve Rod 12 Valve Body 12a Upper Valve 12b Lower Valve

Claims (5)

[Claims] 1. A tank main body having a bottom provided with a water supply port, an outer cap detachably attached to the water supply port and having a first drainage port provided at the bottom, and a detachable attachment to the outer cap. An inner cap provided with an air vent pipe, a water purifying filter, and a second drainage port on the upper part, a measuring chamber formed by the outer cap and the inner cap, the measuring chamber is disposed in the measuring chamber, and the lower end is the first A valve body provided with an upper valve for opening and closing the second drain port and a lower valve for opening and closing the first drain port on a valve rod protruding from the first drain port; A water supply tank comprising: a biasing unit that biases the drainage port in a direction that always closes the drainage port. 2. The urging means comprises an elastic body interposed between the outer cap and the valve rod.
Water tank as described. 3. The water supply tank according to claim 2, wherein the elastic body is a spring. 4. The water supply tank according to claim 1, wherein the water purification filter is arranged at a position lower than a bottom portion of the tank body. 5. The upper valve and the lower valve alternately open and close the first drain hole and the second drain hole as the valve rod moves up and down. Water tank.